From 8fd6c61557d06a2434cf0e296df38f218ba2c186 Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 19 Nov 2010 10:48:58 +0000 Subject: Remove tools again. Should have done it with svn merge --reintegrate --- tools/plink/be_all.c | 31 - tools/plink/cmdline.c | 449 --- tools/plink/cproxy.c | 190 - tools/plink/int64.h | 24 - tools/plink/ldisc.c | 336 -- tools/plink/ldisc.h | 22 - tools/plink/logging.c | 423 --- tools/plink/misc.c | 655 ---- tools/plink/misc.h | 132 - tools/plink/network.h | 247 -- tools/plink/pinger.c | 71 - tools/plink/portfwd.c | 556 --- tools/plink/proxy.c | 1478 -------- tools/plink/proxy.h | 123 - tools/plink/putty.h | 1230 ------ tools/plink/puttymem.h | 42 - tools/plink/puttyps.h | 26 - tools/plink/raw.c | 300 -- tools/plink/rlogin.c | 373 -- tools/plink/settings.c | 936 ----- tools/plink/ssh.c | 9737 ------------------------------------------------ tools/plink/ssh.h | 583 --- tools/plink/sshaes.c | 1234 ------ tools/plink/ssharcf.c | 123 - tools/plink/sshblowf.c | 588 --- tools/plink/sshbn.c | 1092 ------ tools/plink/sshcrc.c | 230 -- tools/plink/sshcrcda.c | 172 - tools/plink/sshdes.c | 1031 ----- tools/plink/sshdh.c | 230 -- tools/plink/sshdss.c | 643 ---- tools/plink/sshgss.h | 106 - tools/plink/sshmd5.c | 344 -- tools/plink/sshpubk.c | 1217 ------ tools/plink/sshrand.c | 246 -- tools/plink/sshrsa.c | 1010 ----- tools/plink/sshsh256.c | 269 -- tools/plink/sshsh512.c | 358 -- tools/plink/sshsha.c | 411 -- tools/plink/sshzlib.c | 1382 ------- tools/plink/storage.h | 115 - tools/plink/telnet.c | 1091 ------ tools/plink/terminal.h | 280 -- tools/plink/time.c | 16 - tools/plink/timing.c | 243 -- tools/plink/tree234.c | 1479 -------- tools/plink/tree234.h | 160 - tools/plink/version.c | 42 - tools/plink/wildcard.c | 472 --- tools/plink/wincons.c | 409 -- tools/plink/windefs.c | 43 - tools/plink/wingss.c | 322 -- tools/plink/winhandl.c | 596 --- tools/plink/winhelp.h | 182 - tools/plink/winmisc.c | 313 -- tools/plink/winnet.c | 1713 --------- tools/plink/winnoise.c | 128 - tools/plink/winpgntc.c | 138 - tools/plink/winplink.c | 719 ---- tools/plink/winproxy.c | 217 -- tools/plink/winstore.c | 656 ---- tools/plink/winstuff.h | 467 --- tools/plink/winx11.c | 18 - tools/plink/x11fwd.c | 791 ---- 64 files changed, 39260 deletions(-) delete mode 100644 tools/plink/be_all.c delete mode 100644 tools/plink/cmdline.c delete mode 100644 tools/plink/cproxy.c delete mode 100644 tools/plink/int64.h delete mode 100644 tools/plink/ldisc.c delete mode 100644 tools/plink/ldisc.h delete mode 100644 tools/plink/logging.c delete mode 100644 tools/plink/misc.c delete mode 100644 tools/plink/misc.h delete mode 100644 tools/plink/network.h delete mode 100644 tools/plink/pinger.c delete mode 100644 tools/plink/portfwd.c delete mode 100644 tools/plink/proxy.c delete mode 100644 tools/plink/proxy.h delete mode 100644 tools/plink/putty.h delete mode 100644 tools/plink/puttymem.h delete mode 100644 tools/plink/puttyps.h delete mode 100644 tools/plink/raw.c delete mode 100644 tools/plink/rlogin.c delete mode 100644 tools/plink/settings.c delete mode 100644 tools/plink/ssh.c delete mode 100644 tools/plink/ssh.h delete mode 100644 tools/plink/sshaes.c delete mode 100644 tools/plink/ssharcf.c delete mode 100644 tools/plink/sshblowf.c delete mode 100644 tools/plink/sshbn.c delete mode 100644 tools/plink/sshcrc.c delete mode 100644 tools/plink/sshcrcda.c delete mode 100644 tools/plink/sshdes.c delete mode 100644 tools/plink/sshdh.c delete mode 100644 tools/plink/sshdss.c delete mode 100644 tools/plink/sshgss.h delete mode 100644 tools/plink/sshmd5.c delete mode 100644 tools/plink/sshpubk.c delete mode 100644 tools/plink/sshrand.c delete mode 100644 tools/plink/sshrsa.c delete mode 100644 tools/plink/sshsh256.c delete mode 100644 tools/plink/sshsh512.c delete mode 100644 tools/plink/sshsha.c delete mode 100644 tools/plink/sshzlib.c delete mode 100644 tools/plink/storage.h delete mode 100644 tools/plink/telnet.c delete mode 100644 tools/plink/terminal.h delete mode 100644 tools/plink/time.c delete mode 100644 tools/plink/timing.c delete mode 100644 tools/plink/tree234.c delete mode 100644 tools/plink/tree234.h delete mode 100644 tools/plink/version.c delete mode 100644 tools/plink/wildcard.c delete mode 100644 tools/plink/wincons.c delete mode 100644 tools/plink/windefs.c delete mode 100644 tools/plink/wingss.c delete mode 100644 tools/plink/winhandl.c delete mode 100644 tools/plink/winhelp.h delete mode 100644 tools/plink/winmisc.c delete mode 100644 tools/plink/winnet.c delete mode 100644 tools/plink/winnoise.c delete mode 100644 tools/plink/winpgntc.c delete mode 100644 tools/plink/winplink.c delete mode 100644 tools/plink/winproxy.c delete mode 100644 tools/plink/winstore.c delete mode 100644 tools/plink/winstuff.h delete mode 100644 tools/plink/winx11.c delete mode 100644 tools/plink/x11fwd.c diff --git a/tools/plink/be_all.c b/tools/plink/be_all.c deleted file mode 100644 index 05ba82d75..000000000 --- a/tools/plink/be_all.c +++ /dev/null @@ -1,31 +0,0 @@ -/* - * Linking module for PuTTY proper: list the available backends - * including ssh. - */ - -#include -#include "putty.h" - -/* - * This appname is not strictly in the right place, since Plink - * also uses this module. However, Plink doesn't currently use any - * of the dialog-box sorts of things that make use of appname, so - * it shouldn't do any harm here. I'm trying to avoid having to - * have tiny little source modules containing nothing but - * declarations of appname, for as long as I can... - */ -const char *const appname = "PuTTY"; - -#ifdef TELNET_DEFAULT -const int be_default_protocol = PROT_TELNET; -#else -const int be_default_protocol = PROT_SSH; -#endif - -Backend *backends[] = { - &ssh_backend, - &telnet_backend, - &rlogin_backend, - &raw_backend, - NULL -}; diff --git a/tools/plink/cmdline.c b/tools/plink/cmdline.c deleted file mode 100644 index f3a0e22f1..000000000 --- a/tools/plink/cmdline.c +++ /dev/null @@ -1,449 +0,0 @@ -/* - * cmdline.c - command-line parsing shared between many of the - * PuTTY applications - */ - -#include -#include -#include -#include "putty.h" - -/* - * Some command-line parameters need to be saved up until after - * we've loaded the saved session which will form the basis of our - * eventual running configuration. For this we use the macro - * SAVEABLE, which notices if the `need_save' parameter is set and - * saves the parameter and value on a list. - * - * We also assign priorities to saved parameters, just to slightly - * ameliorate silly ordering problems. For example, if you specify - * a saved session to load, it will be loaded _before_ all your - * local modifications such as -L are evaluated; and if you specify - * a protocol and a port, the protocol is set up first so that the - * port can override its choice of port number. - * - * (In fact -load is not saved at all, since in at least Plink the - * processing of further command-line options depends on whether or - * not the loaded session contained a hostname. So it must be - * executed immediately.) - */ - -#define NPRIORITIES 2 - -struct cmdline_saved_param { - char *p, *value; -}; -struct cmdline_saved_param_set { - struct cmdline_saved_param *params; - int nsaved, savesize; -}; - -/* - * C guarantees this structure will be initialised to all zero at - * program start, which is exactly what we want. - */ -static struct cmdline_saved_param_set saves[NPRIORITIES]; - -static void cmdline_save_param(char *p, char *value, int pri) -{ - if (saves[pri].nsaved >= saves[pri].savesize) { - saves[pri].savesize = saves[pri].nsaved + 32; - saves[pri].params = sresize(saves[pri].params, saves[pri].savesize, - struct cmdline_saved_param); - } - saves[pri].params[saves[pri].nsaved].p = p; - saves[pri].params[saves[pri].nsaved].value = value; - saves[pri].nsaved++; -} - -void cmdline_cleanup(void) -{ - int pri; - - for (pri = 0; pri < NPRIORITIES; pri++) - sfree(saves[pri].params); -} - -#define SAVEABLE(pri) do { \ - if (need_save) { cmdline_save_param(p, value, pri); return ret; } \ -} while (0) - -static char *cmdline_password = NULL; - -/* - * Similar interface to get_userpass_input(), except that here a -1 - * return means that we aren't capable of processing the prompt and - * someone else should do it. - */ -int cmdline_get_passwd_input(prompts_t *p, unsigned char *in, int inlen) { - - static int tried_once = 0; - - /* - * We only handle prompts which don't echo (which we assume to be - * passwords), and (currently) we only cope with a password prompt - * that comes in a prompt-set on its own. - */ - if (!cmdline_password || in || p->n_prompts != 1 || p->prompts[0]->echo) { - return -1; - } - - /* - * If we've tried once, return utter failure (no more passwords left - * to try). - */ - if (tried_once) - return 0; - - strncpy(p->prompts[0]->result, cmdline_password, - p->prompts[0]->result_len); - p->prompts[0]->result[p->prompts[0]->result_len-1] = '\0'; - memset(cmdline_password, 0, strlen(cmdline_password)); - tried_once = 1; - return 1; - -} - -/* - * Here we have a flags word which describes the capabilities of - * the particular tool on whose behalf we're running. We will - * refuse certain command-line options if a particular tool - * inherently can't do anything sensible. For example, the file - * transfer tools (psftp, pscp) can't do a great deal with protocol - * selections (ever tried running scp over telnet?) or with port - * forwarding (even if it wasn't a hideously bad idea, they don't - * have the select() infrastructure to make them work). - */ -int cmdline_tooltype = 0; - -static int cmdline_check_unavailable(int flag, char *p) -{ - if (cmdline_tooltype & flag) { - cmdline_error("option \"%s\" not available in this tool", p); - return 1; - } - return 0; -} - -#define UNAVAILABLE_IN(flag) do { \ - if (cmdline_check_unavailable(flag, p)) return ret; \ -} while (0) - -/* - * Process a standard command-line parameter. `p' is the parameter - * in question; `value' is the subsequent element of argv, which - * may or may not be required as an operand to the parameter. - * If `need_save' is 1, arguments which need to be saved as - * described at this top of this file are, for later execution; - * if 0, they are processed normally. (-1 is a special value used - * by pterm to count arguments for a preliminary pass through the - * argument list; it causes immediate return with an appropriate - * value with no action taken.) - * Return value is 2 if both arguments were used; 1 if only p was - * used; 0 if the parameter wasn't one we recognised; -2 if it - * should have been 2 but value was NULL. - */ - -#define RETURN(x) do { \ - if ((x) == 2 && !value) return -2; \ - ret = x; \ - if (need_save < 0) return x; \ -} while (0) - -int cmdline_process_param(char *p, char *value, int need_save, Config *cfg) -{ - int ret = 0; - - if (!strcmp(p, "-load")) { - RETURN(2); - /* This parameter must be processed immediately rather than being - * saved. */ - do_defaults(value, cfg); - loaded_session = TRUE; - return 2; - } - if (!strcmp(p, "-ssh")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - default_protocol = cfg->protocol = PROT_SSH; - default_port = cfg->port = 22; - return 1; - } - if (!strcmp(p, "-telnet")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - default_protocol = cfg->protocol = PROT_TELNET; - default_port = cfg->port = 23; - return 1; - } - if (!strcmp(p, "-rlogin")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - default_protocol = cfg->protocol = PROT_RLOGIN; - default_port = cfg->port = 513; - return 1; - } - if (!strcmp(p, "-raw")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - default_protocol = cfg->protocol = PROT_RAW; - } - if (!strcmp(p, "-v")) { - RETURN(1); - flags |= FLAG_VERBOSE; - } - if (!strcmp(p, "-l")) { - RETURN(2); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(0); - strncpy(cfg->username, value, sizeof(cfg->username)); - cfg->username[sizeof(cfg->username) - 1] = '\0'; - } - if (!strcmp(p, "-loghost")) { - RETURN(2); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(0); - strncpy(cfg->loghost, value, sizeof(cfg->loghost)); - cfg->loghost[sizeof(cfg->loghost) - 1] = '\0'; - } - if ((!strcmp(p, "-L") || !strcmp(p, "-R") || !strcmp(p, "-D"))) { - char *fwd, *ptr, *q, *qq; - int dynamic, i=0; - RETURN(2); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - dynamic = !strcmp(p, "-D"); - fwd = value; - ptr = cfg->portfwd; - /* if existing forwards, find end of list */ - while (*ptr) { - while (*ptr) - ptr++; - ptr++; - } - i = ptr - cfg->portfwd; - ptr[0] = p[1]; /* insert a 'L', 'R' or 'D' at the start */ - ptr++; - if (1 + strlen(fwd) + 2 > sizeof(cfg->portfwd) - i) { - cmdline_error("out of space for port forwardings"); - return ret; - } - strncpy(ptr, fwd, sizeof(cfg->portfwd) - i - 2); - if (!dynamic) { - /* - * We expect _at least_ two colons in this string. The - * possible formats are `sourceport:desthost:destport', - * or `sourceip:sourceport:desthost:destport' if you're - * specifying a particular loopback address. We need to - * replace the one between source and dest with a \t; - * this means we must find the second-to-last colon in - * the string. - */ - q = qq = strchr(ptr, ':'); - while (qq) { - char *qqq = strchr(qq+1, ':'); - if (qqq) - q = qq; - qq = qqq; - } - if (q) *q = '\t'; /* replace second-last colon with \t */ - } - cfg->portfwd[sizeof(cfg->portfwd) - 1] = '\0'; - cfg->portfwd[sizeof(cfg->portfwd) - 2] = '\0'; - ptr[strlen(ptr)+1] = '\000'; /* append 2nd '\000' */ - } - if ((!strcmp(p, "-nc"))) { - char *host, *portp; - - RETURN(2); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - - host = portp = value; - while (*portp && *portp != ':') - portp++; - if (*portp) { - unsigned len = portp - host; - if (len >= sizeof(cfg->ssh_nc_host)) - len = sizeof(cfg->ssh_nc_host) - 1; - memcpy(cfg->ssh_nc_host, value, len); - cfg->ssh_nc_host[len] = '\0'; - cfg->ssh_nc_port = atoi(portp+1); - } else { - cmdline_error("-nc expects argument of form 'host:port'"); - return ret; - } - } - if (!strcmp(p, "-m")) { - char *filename, *command; - int cmdlen, cmdsize; - FILE *fp; - int c, d; - - RETURN(2); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - - filename = value; - - cmdlen = cmdsize = 0; - command = NULL; - fp = fopen(filename, "r"); - if (!fp) { - cmdline_error("unable to open command " - "file \"%s\"", filename); - return ret; - } - do { - c = fgetc(fp); - d = c; - if (c == EOF) - d = 0; - if (cmdlen >= cmdsize) { - cmdsize = cmdlen + 512; - command = sresize(command, cmdsize, char); - } - command[cmdlen++] = d; - } while (c != EOF); - cfg->remote_cmd_ptr = command; - cfg->remote_cmd_ptr2 = NULL; - cfg->nopty = TRUE; /* command => no terminal */ - } - if (!strcmp(p, "-P")) { - RETURN(2); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(1); /* lower priority than -ssh,-telnet */ - cfg->port = atoi(value); - } - if (!strcmp(p, "-pw")) { - RETURN(2); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(1); - /* We delay evaluating this until after the protocol is decided, - * so that we can warn if it's of no use with the selected protocol */ - if (cfg->protocol != PROT_SSH) - cmdline_error("the -pw option can only be used with the " - "SSH protocol"); - else { - cmdline_password = dupstr(value); - /* Assuming that `value' is directly from argv, make a good faith - * attempt to trample it, to stop it showing up in `ps' output - * on Unix-like systems. Not guaranteed, of course. */ - memset(value, 0, strlen(value)); - } - } - - if (!strcmp(p, "-agent") || !strcmp(p, "-pagent") || - !strcmp(p, "-pageant")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->tryagent = TRUE; - } - if (!strcmp(p, "-noagent") || !strcmp(p, "-nopagent") || - !strcmp(p, "-nopageant")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->tryagent = FALSE; - } - - if (!strcmp(p, "-A")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->agentfwd = 1; - } - if (!strcmp(p, "-a")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->agentfwd = 0; - } - - if (!strcmp(p, "-X")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->x11_forward = 1; - } - if (!strcmp(p, "-x")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->x11_forward = 0; - } - - if (!strcmp(p, "-t")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(1); /* lower priority than -m */ - cfg->nopty = 0; - } - if (!strcmp(p, "-T")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(1); - cfg->nopty = 1; - } - - if (!strcmp(p, "-N")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->ssh_no_shell = 1; - } - - if (!strcmp(p, "-C")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->compression = 1; - } - - if (!strcmp(p, "-1")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->sshprot = 0; /* ssh protocol 1 only */ - } - if (!strcmp(p, "-2")) { - RETURN(1); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->sshprot = 3; /* ssh protocol 2 only */ - } - - if (!strcmp(p, "-i")) { - RETURN(2); - UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); - SAVEABLE(0); - cfg->keyfile = filename_from_str(value); - } - - if (!strcmp(p, "-4") || !strcmp(p, "-ipv4")) { - RETURN(1); - SAVEABLE(1); - cfg->addressfamily = ADDRTYPE_IPV4; - } - if (!strcmp(p, "-6") || !strcmp(p, "-ipv6")) { - RETURN(1); - SAVEABLE(1); - cfg->addressfamily = ADDRTYPE_IPV6; - } - - return ret; /* unrecognised */ -} - -void cmdline_run_saved(Config *cfg) -{ - int pri, i; - for (pri = 0; pri < NPRIORITIES; pri++) - for (i = 0; i < saves[pri].nsaved; i++) - cmdline_process_param(saves[pri].params[i].p, - saves[pri].params[i].value, 0, cfg); -} diff --git a/tools/plink/cproxy.c b/tools/plink/cproxy.c deleted file mode 100644 index 5537fca80..000000000 --- a/tools/plink/cproxy.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * Routines to do cryptographic interaction with proxies in PuTTY. - * This is in a separate module from proxy.c, so that it can be - * conveniently removed in PuTTYtel by replacing this module with - * the stub version nocproxy.c. - */ - -#include -#include -#include - -#define DEFINE_PLUG_METHOD_MACROS -#include "putty.h" -#include "ssh.h" /* For MD5 support */ -#include "network.h" -#include "proxy.h" - -static void hmacmd5_chap(const unsigned char *challenge, int challen, - const char *passwd, unsigned char *response) -{ - void *hmacmd5_ctx; - int pwlen; - - hmacmd5_ctx = hmacmd5_make_context(); - - pwlen = strlen(passwd); - if (pwlen>64) { - unsigned char md5buf[16]; - MD5Simple(passwd, pwlen, md5buf); - hmacmd5_key(hmacmd5_ctx, md5buf, 16); - } else { - hmacmd5_key(hmacmd5_ctx, passwd, pwlen); - } - - hmacmd5_do_hmac(hmacmd5_ctx, challenge, challen, response); - hmacmd5_free_context(hmacmd5_ctx); -} - -void proxy_socks5_offerencryptedauth(char *command, int *len) -{ - command[*len] = 0x03; /* CHAP */ - (*len)++; -} - -int proxy_socks5_handlechap (Proxy_Socket p) -{ - - /* CHAP authentication reply format: - * version number (1 bytes) = 1 - * number of commands (1 byte) - * - * For each command: - * command identifier (1 byte) - * data length (1 byte) - */ - unsigned char data[260]; - unsigned char outbuf[20]; - - while(p->chap_num_attributes == 0 || - p->chap_num_attributes_processed < p->chap_num_attributes) { - if (p->chap_num_attributes == 0 || - p->chap_current_attribute == -1) { - /* CHAP normally reads in two bytes, either at the - * beginning or for each attribute/value pair. But if - * we're waiting for the value's data, we might not want - * to read 2 bytes. - */ - - if (bufchain_size(&p->pending_input_data) < 2) - return 1; /* not got anything yet */ - - /* get the response */ - bufchain_fetch(&p->pending_input_data, data, 2); - bufchain_consume(&p->pending_input_data, 2); - } - - if (p->chap_num_attributes == 0) { - /* If there are no attributes, this is our first msg - * with the server, where we negotiate version and - * number of attributes - */ - if (data[0] != 0x01) { - plug_closing(p->plug, "Proxy error: SOCKS proxy wants" - " a different CHAP version", - PROXY_ERROR_GENERAL, 0); - return 1; - } - if (data[1] == 0x00) { - plug_closing(p->plug, "Proxy error: SOCKS proxy won't" - " negotiate CHAP with us", - PROXY_ERROR_GENERAL, 0); - return 1; - } - p->chap_num_attributes = data[1]; - } else { - if (p->chap_current_attribute == -1) { - /* We have to read in each attribute/value pair - - * those we don't understand can be ignored, but - * there are a few we'll need to handle. - */ - p->chap_current_attribute = data[0]; - p->chap_current_datalen = data[1]; - } - if (bufchain_size(&p->pending_input_data) < - p->chap_current_datalen) - return 1; /* not got everything yet */ - - /* get the response */ - bufchain_fetch(&p->pending_input_data, data, - p->chap_current_datalen); - - bufchain_consume(&p->pending_input_data, - p->chap_current_datalen); - - switch (p->chap_current_attribute) { - case 0x00: - /* Successful authentication */ - if (data[0] == 0x00) - p->state = 2; - else { - plug_closing(p->plug, "Proxy error: SOCKS proxy" - " refused CHAP authentication", - PROXY_ERROR_GENERAL, 0); - return 1; - } - break; - case 0x03: - outbuf[0] = 0x01; /* Version */ - outbuf[1] = 0x01; /* One attribute */ - outbuf[2] = 0x04; /* Response */ - outbuf[3] = 0x10; /* Length */ - hmacmd5_chap(data, p->chap_current_datalen, - p->cfg.proxy_password, &outbuf[4]); - sk_write(p->sub_socket, (char *)outbuf, 20); - break; - case 0x11: - /* Chose a protocol */ - if (data[0] != 0x85) { - plug_closing(p->plug, "Proxy error: Server chose " - "CHAP of other than HMAC-MD5 but we " - "didn't offer it!", - PROXY_ERROR_GENERAL, 0); - return 1; - } - break; - } - p->chap_current_attribute = -1; - p->chap_num_attributes_processed++; - } - if (p->state == 8 && - p->chap_num_attributes_processed >= p->chap_num_attributes) { - p->chap_num_attributes = 0; - p->chap_num_attributes_processed = 0; - p->chap_current_datalen = 0; - } - } - return 0; -} - -int proxy_socks5_selectchap(Proxy_Socket p) -{ - if (p->cfg.proxy_username[0] || p->cfg.proxy_password[0]) { - char chapbuf[514]; - int ulen; - chapbuf[0] = '\x01'; /* Version */ - chapbuf[1] = '\x02'; /* Number of attributes sent */ - chapbuf[2] = '\x11'; /* First attribute - algorithms list */ - chapbuf[3] = '\x01'; /* Only one CHAP algorithm */ - chapbuf[4] = '\x85'; /* ...and it's HMAC-MD5, the core one */ - chapbuf[5] = '\x02'; /* Second attribute - username */ - - ulen = strlen(p->cfg.proxy_username); - if (ulen > 255) ulen = 255; if (ulen < 1) ulen = 1; - - chapbuf[6] = ulen; - memcpy(chapbuf+7, p->cfg.proxy_username, ulen); - - sk_write(p->sub_socket, chapbuf, ulen + 7); - p->chap_num_attributes = 0; - p->chap_num_attributes_processed = 0; - p->chap_current_attribute = -1; - p->chap_current_datalen = 0; - - p->state = 8; - } else - plug_closing(p->plug, "Proxy error: Server chose " - "CHAP authentication but we didn't offer it!", - PROXY_ERROR_GENERAL, 0); - return 1; -} diff --git a/tools/plink/int64.h b/tools/plink/int64.h deleted file mode 100644 index 63df3a992..000000000 --- a/tools/plink/int64.h +++ /dev/null @@ -1,24 +0,0 @@ -/* - * Header for int64.c. - */ - -#ifndef PUTTY_INT64_H -#define PUTTY_INT64_H - -typedef struct { - unsigned long hi, lo; -} uint64; - -uint64 uint64_div10(uint64 x, int *remainder); -void uint64_decimal(uint64 x, char *buffer); -uint64 uint64_make(unsigned long hi, unsigned long lo); -uint64 uint64_add(uint64 x, uint64 y); -uint64 uint64_add32(uint64 x, unsigned long y); -int uint64_compare(uint64 x, uint64 y); -uint64 uint64_subtract(uint64 x, uint64 y); -double uint64_to_double(uint64 x); -uint64 uint64_shift_right(uint64 x, int shift); -uint64 uint64_shift_left(uint64 x, int shift); -uint64 uint64_from_decimal(char *str); - -#endif diff --git a/tools/plink/ldisc.c b/tools/plink/ldisc.c deleted file mode 100644 index 20fa3c568..000000000 --- a/tools/plink/ldisc.c +++ /dev/null @@ -1,336 +0,0 @@ -/* - * ldisc.c: PuTTY line discipline. Sits between the input coming - * from keypresses in the window, and the output channel leading to - * the back end. Implements echo and/or local line editing, - * depending on what's currently configured. - */ - -#include -#include - -#include "putty.h" -#include "terminal.h" -#include "ldisc.h" - -#define ECHOING (ldisc->cfg->localecho == FORCE_ON || \ - (ldisc->cfg->localecho == AUTO && \ - (ldisc->back->ldisc(ldisc->backhandle, LD_ECHO) || \ - term_ldisc(ldisc->term, LD_ECHO)))) -#define EDITING (ldisc->cfg->localedit == FORCE_ON || \ - (ldisc->cfg->localedit == AUTO && \ - (ldisc->back->ldisc(ldisc->backhandle, LD_EDIT) || \ - term_ldisc(ldisc->term, LD_EDIT)))) - -static void c_write(Ldisc ldisc, char *buf, int len) -{ - from_backend(ldisc->frontend, 0, buf, len); -} - -static int plen(Ldisc ldisc, unsigned char c) -{ - if ((c >= 32 && c <= 126) || (c >= 160 && !in_utf(ldisc->term))) - return 1; - else if (c < 128) - return 2; /* ^x for some x */ - else if (in_utf(ldisc->term) && c >= 0xC0) - return 1; /* UTF-8 introducer character - * (FIXME: combining / wide chars) */ - else if (in_utf(ldisc->term) && c >= 0x80 && c < 0xC0) - return 0; /* UTF-8 followup character */ - else - return 4; /* hex representation */ -} - -static void pwrite(Ldisc ldisc, unsigned char c) -{ - if ((c >= 32 && c <= 126) || - (!in_utf(ldisc->term) && c >= 0xA0) || - (in_utf(ldisc->term) && c >= 0x80)) { - c_write(ldisc, (char *)&c, 1); - } else if (c < 128) { - char cc[2]; - cc[1] = (c == 127 ? '?' : c + 0x40); - cc[0] = '^'; - c_write(ldisc, cc, 2); - } else { - char cc[5]; - sprintf(cc, "<%02X>", c); - c_write(ldisc, cc, 4); - } -} - -static int char_start(Ldisc ldisc, unsigned char c) -{ - if (in_utf(ldisc->term)) - return (c < 0x80 || c >= 0xC0); - else - return 1; -} - -static void bsb(Ldisc ldisc, int n) -{ - while (n--) - c_write(ldisc, "\010 \010", 3); -} - -#define CTRL(x) (x^'@') -#define KCTRL(x) ((x^'@') | 0x100) - -void *ldisc_create(Config *mycfg, Terminal *term, - Backend *back, void *backhandle, - void *frontend) -{ - Ldisc ldisc = snew(struct ldisc_tag); - - ldisc->buf = NULL; - ldisc->buflen = 0; - ldisc->bufsiz = 0; - ldisc->quotenext = 0; - - ldisc->cfg = mycfg; - ldisc->back = back; - ldisc->backhandle = backhandle; - ldisc->term = term; - ldisc->frontend = frontend; - - /* Link ourselves into the backend and the terminal */ - if (term) - term->ldisc = ldisc; - if (back) - back->provide_ldisc(backhandle, ldisc); - - return ldisc; -} - -void ldisc_free(void *handle) -{ - Ldisc ldisc = (Ldisc) handle; - - if (ldisc->term) - ldisc->term->ldisc = NULL; - if (ldisc->back) - ldisc->back->provide_ldisc(ldisc->backhandle, NULL); - if (ldisc->buf) - sfree(ldisc->buf); - sfree(ldisc); -} - -void ldisc_send(void *handle, char *buf, int len, int interactive) -{ - Ldisc ldisc = (Ldisc) handle; - int keyflag = 0; - /* - * Called with len=0 when the options change. We must inform - * the front end in case it needs to know. - */ - if (len == 0) { - ldisc_update(ldisc->frontend, ECHOING, EDITING); - return; - } - /* - * Notify the front end that something was pressed, in case - * it's depending on finding out (e.g. keypress termination for - * Close On Exit). - */ - frontend_keypress(ldisc->frontend); - - /* - * Less than zero means null terminated special string. - */ - if (len < 0) { - len = strlen(buf); - keyflag = KCTRL('@'); - } - /* - * Either perform local editing, or just send characters. - */ - if (EDITING) { - while (len--) { - int c; - c = *buf++ + keyflag; - if (!interactive && c == '\r') - c += KCTRL('@'); - switch (ldisc->quotenext ? ' ' : c) { - /* - * ^h/^?: delete, and output BSBs, to return to - * last character boundary (in UTF-8 mode this may - * be more than one byte) - * ^w: delete, and output BSBs, to return to last - * space/nonspace boundary - * ^u: delete, and output BSBs, to return to BOL - * ^c: Do a ^u then send a telnet IP - * ^z: Do a ^u then send a telnet SUSP - * ^\: Do a ^u then send a telnet ABORT - * ^r: echo "^R\n" and redraw line - * ^v: quote next char - * ^d: if at BOL, end of file and close connection, - * else send line and reset to BOL - * ^m: send line-plus-\r\n and reset to BOL - */ - case KCTRL('H'): - case KCTRL('?'): /* backspace/delete */ - if (ldisc->buflen > 0) { - do { - if (ECHOING) - bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1])); - ldisc->buflen--; - } while (!char_start(ldisc, ldisc->buf[ldisc->buflen])); - } - break; - case CTRL('W'): /* delete word */ - while (ldisc->buflen > 0) { - if (ECHOING) - bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1])); - ldisc->buflen--; - if (ldisc->buflen > 0 && - isspace((unsigned char)ldisc->buf[ldisc->buflen-1]) && - !isspace((unsigned char)ldisc->buf[ldisc->buflen])) - break; - } - break; - case CTRL('U'): /* delete line */ - case CTRL('C'): /* Send IP */ - case CTRL('\\'): /* Quit */ - case CTRL('Z'): /* Suspend */ - while (ldisc->buflen > 0) { - if (ECHOING) - bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1])); - ldisc->buflen--; - } - ldisc->back->special(ldisc->backhandle, TS_EL); - /* - * We don't send IP, SUSP or ABORT if the user has - * configured telnet specials off! This breaks - * talkers otherwise. - */ - if (!ldisc->cfg->telnet_keyboard) - goto default_case; - if (c == CTRL('C')) - ldisc->back->special(ldisc->backhandle, TS_IP); - if (c == CTRL('Z')) - ldisc->back->special(ldisc->backhandle, TS_SUSP); - if (c == CTRL('\\')) - ldisc->back->special(ldisc->backhandle, TS_ABORT); - break; - case CTRL('R'): /* redraw line */ - if (ECHOING) { - int i; - c_write(ldisc, "^R\r\n", 4); - for (i = 0; i < ldisc->buflen; i++) - pwrite(ldisc, ldisc->buf[i]); - } - break; - case CTRL('V'): /* quote next char */ - ldisc->quotenext = TRUE; - break; - case CTRL('D'): /* logout or send */ - if (ldisc->buflen == 0) { - ldisc->back->special(ldisc->backhandle, TS_EOF); - } else { - ldisc->back->send(ldisc->backhandle, ldisc->buf, ldisc->buflen); - ldisc->buflen = 0; - } - break; - /* - * This particularly hideous bit of code from RDB - * allows ordinary ^M^J to do the same thing as - * magic-^M when in Raw protocol. The line `case - * KCTRL('M'):' is _inside_ the if block. Thus: - * - * - receiving regular ^M goes straight to the - * default clause and inserts as a literal ^M. - * - receiving regular ^J _not_ directly after a - * literal ^M (or not in Raw protocol) fails the - * if condition, leaps to the bottom of the if, - * and falls through into the default clause - * again. - * - receiving regular ^J just after a literal ^M - * in Raw protocol passes the if condition, - * deletes the literal ^M, and falls through - * into the magic-^M code - * - receiving a magic-^M empties the line buffer, - * signals end-of-line in one of the various - * entertaining ways, and _doesn't_ fall out of - * the bottom of the if and through to the - * default clause because of the break. - */ - case CTRL('J'): - if (ldisc->cfg->protocol == PROT_RAW && - ldisc->buflen > 0 && ldisc->buf[ldisc->buflen - 1] == '\r') { - if (ECHOING) - bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1])); - ldisc->buflen--; - /* FALLTHROUGH */ - case KCTRL('M'): /* send with newline */ - if (ldisc->buflen > 0) - ldisc->back->send(ldisc->backhandle, ldisc->buf, ldisc->buflen); - if (ldisc->cfg->protocol == PROT_RAW) - ldisc->back->send(ldisc->backhandle, "\r\n", 2); - else if (ldisc->cfg->protocol == PROT_TELNET && ldisc->cfg->telnet_newline) - ldisc->back->special(ldisc->backhandle, TS_EOL); - else - ldisc->back->send(ldisc->backhandle, "\r", 1); - if (ECHOING) - c_write(ldisc, "\r\n", 2); - ldisc->buflen = 0; - break; - } - /* FALLTHROUGH */ - default: /* get to this label from ^V handler */ - default_case: - if (ldisc->buflen >= ldisc->bufsiz) { - ldisc->bufsiz = ldisc->buflen + 256; - ldisc->buf = sresize(ldisc->buf, ldisc->bufsiz, char); - } - ldisc->buf[ldisc->buflen++] = c; - if (ECHOING) - pwrite(ldisc, (unsigned char) c); - ldisc->quotenext = FALSE; - break; - } - } - } else { - if (ldisc->buflen != 0) { - ldisc->back->send(ldisc->backhandle, ldisc->buf, ldisc->buflen); - while (ldisc->buflen > 0) { - bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1])); - ldisc->buflen--; - } - } - if (len > 0) { - if (ECHOING) - c_write(ldisc, buf, len); - if (keyflag && ldisc->cfg->protocol == PROT_TELNET && len == 1) { - switch (buf[0]) { - case CTRL('M'): - if (ldisc->cfg->protocol == PROT_TELNET && ldisc->cfg->telnet_newline) - ldisc->back->special(ldisc->backhandle, TS_EOL); - else - ldisc->back->send(ldisc->backhandle, "\r", 1); - break; - case CTRL('?'): - case CTRL('H'): - if (ldisc->cfg->telnet_keyboard) { - ldisc->back->special(ldisc->backhandle, TS_EC); - break; - } - case CTRL('C'): - if (ldisc->cfg->telnet_keyboard) { - ldisc->back->special(ldisc->backhandle, TS_IP); - break; - } - case CTRL('Z'): - if (ldisc->cfg->telnet_keyboard) { - ldisc->back->special(ldisc->backhandle, TS_SUSP); - break; - } - - default: - ldisc->back->send(ldisc->backhandle, buf, len); - break; - } - } else - ldisc->back->send(ldisc->backhandle, buf, len); - } - } -} diff --git a/tools/plink/ldisc.h b/tools/plink/ldisc.h deleted file mode 100644 index ef84f6d6d..000000000 --- a/tools/plink/ldisc.h +++ /dev/null @@ -1,22 +0,0 @@ -/* - * ldisc.h: defines the Ldisc data structure used by ldisc.c and - * ldiscucs.c. (Unfortunately it was necessary to split the ldisc - * module in two, to avoid unnecessarily linking in the Unicode - * stuff in tools that don't require it.) - */ - -#ifndef PUTTY_LDISC_H -#define PUTTY_LDISC_H - -typedef struct ldisc_tag { - Terminal *term; - Backend *back; - Config *cfg; - void *backhandle; - void *frontend; - - char *buf; - int buflen, bufsiz, quotenext; -} *Ldisc; - -#endif /* PUTTY_LDISC_H */ diff --git a/tools/plink/logging.c b/tools/plink/logging.c deleted file mode 100644 index 6b8eaa7c5..000000000 --- a/tools/plink/logging.c +++ /dev/null @@ -1,423 +0,0 @@ -/* - * Session logging. - */ - -#include -#include -#include - -#include -#include - -#include "putty.h" - -/* log session to file stuff ... */ -struct LogContext { - FILE *lgfp; - enum { L_CLOSED, L_OPENING, L_OPEN, L_ERROR } state; - bufchain queue; - Filename currlogfilename; - void *frontend; - Config cfg; -}; - -static void xlatlognam(Filename *d, Filename s, char *hostname, struct tm *tm); - -/* - * Internal wrapper function which must be called for _all_ output - * to the log file. It takes care of opening the log file if it - * isn't open, buffering data if it's in the process of being - * opened asynchronously, etc. - */ -static void logwrite(struct LogContext *ctx, void *data, int len) -{ - /* - * In state L_CLOSED, we call logfopen, which will set the state - * to one of L_OPENING, L_OPEN or L_ERROR. Hence we process all of - * those three _after_ processing L_CLOSED. - */ - if (ctx->state == L_CLOSED) - logfopen(ctx); - - if (ctx->state == L_OPENING) { - bufchain_add(&ctx->queue, data, len); - } else if (ctx->state == L_OPEN) { - assert(ctx->lgfp); - fwrite(data, 1, len, ctx->lgfp); - } /* else L_ERROR, so ignore the write */ -} - -/* - * Convenience wrapper on logwrite() which printf-formats the - * string. - */ -static void logprintf(struct LogContext *ctx, const char *fmt, ...) -{ - va_list ap; - char *data; - - va_start(ap, fmt); - data = dupvprintf(fmt, ap); - va_end(ap); - - logwrite(ctx, data, strlen(data)); - sfree(data); -} - -/* - * Flush any open log file. - */ -void logflush(void *handle) { - struct LogContext *ctx = (struct LogContext *)handle; - if (ctx->cfg.logtype > 0) - if (ctx->state == L_OPEN) - fflush(ctx->lgfp); -} - -static void logfopen_callback(void *handle, int mode) -{ - struct LogContext *ctx = (struct LogContext *)handle; - char buf[256], *event; - struct tm tm; - const char *fmode; - - if (mode == 0) { - ctx->state = L_ERROR; /* disable logging */ - } else { - fmode = (mode == 1 ? "ab" : "wb"); - ctx->lgfp = f_open(ctx->currlogfilename, fmode, FALSE); - if (ctx->lgfp) - ctx->state = L_OPEN; - else - ctx->state = L_ERROR; - } - - if (ctx->state == L_OPEN) { - /* Write header line into log file. */ - tm = ltime(); - strftime(buf, 24, "%Y.%m.%d %H:%M:%S", &tm); - logprintf(ctx, "=~=~=~=~=~=~=~=~=~=~=~= PuTTY log %s" - " =~=~=~=~=~=~=~=~=~=~=~=\r\n", buf); - } - - event = dupprintf("%s session log (%s mode) to file: %s", - (mode == 0 ? "Disabled writing" : - mode == 1 ? "Appending" : "Writing new"), - (ctx->cfg.logtype == LGTYP_ASCII ? "ASCII" : - ctx->cfg.logtype == LGTYP_DEBUG ? "raw" : - ctx->cfg.logtype == LGTYP_PACKETS ? "SSH packets" : - ctx->cfg.logtype == LGTYP_SSHRAW ? "SSH raw data" : - "unknown"), - filename_to_str(&ctx->currlogfilename)); - logevent(ctx->frontend, event); - sfree(event); - - /* - * Having either succeeded or failed in opening the log file, - * we should write any queued data out. - */ - assert(ctx->state != L_OPENING); /* make _sure_ it won't be requeued */ - while (bufchain_size(&ctx->queue)) { - void *data; - int len; - bufchain_prefix(&ctx->queue, &data, &len); - logwrite(ctx, data, len); - bufchain_consume(&ctx->queue, len); - } -} - -/* - * Open the log file. Takes care of detecting an already-existing - * file and asking the user whether they want to append, overwrite - * or cancel logging. - */ -void logfopen(void *handle) -{ - struct LogContext *ctx = (struct LogContext *)handle; - struct tm tm; - int mode; - - /* Prevent repeat calls */ - if (ctx->state != L_CLOSED) - return; - - if (!ctx->cfg.logtype) - return; - - tm = ltime(); - - /* substitute special codes in file name */ - xlatlognam(&ctx->currlogfilename, ctx->cfg.logfilename,ctx->cfg.host, &tm); - - ctx->lgfp = f_open(ctx->currlogfilename, "r", FALSE); /* file already present? */ - if (ctx->lgfp) { - fclose(ctx->lgfp); - if (ctx->cfg.logxfovr != LGXF_ASK) { - mode = ((ctx->cfg.logxfovr == LGXF_OVR) ? 2 : 1); - } else - mode = askappend(ctx->frontend, ctx->currlogfilename, - logfopen_callback, ctx); - } else - mode = 2; /* create == overwrite */ - - if (mode < 0) - ctx->state = L_OPENING; - else - logfopen_callback(ctx, mode); /* open the file */ -} - -void logfclose(void *handle) -{ - struct LogContext *ctx = (struct LogContext *)handle; - if (ctx->lgfp) { - fclose(ctx->lgfp); - ctx->lgfp = NULL; - } - ctx->state = L_CLOSED; -} - -/* - * Log session traffic. - */ -void logtraffic(void *handle, unsigned char c, int logmode) -{ - struct LogContext *ctx = (struct LogContext *)handle; - if (ctx->cfg.logtype > 0) { - if (ctx->cfg.logtype == logmode) - logwrite(ctx, &c, 1); - } -} - -/* - * Log an Event Log entry. Used in SSH packet logging mode; this is - * also as convenient a place as any to put the output of Event Log - * entries to stderr when a command-line tool is in verbose mode. - * (In particular, this is a better place to put it than in the - * front ends, because it only has to be done once for all - * platforms. Platforms which don't have a meaningful stderr can - * just avoid defining FLAG_STDERR. - */ -void log_eventlog(void *handle, const char *event) -{ - struct LogContext *ctx = (struct LogContext *)handle; - if ((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)) { - fprintf(stderr, "%s\n", event); - fflush(stderr); - } - /* If we don't have a context yet (eg winnet.c init) then skip entirely */ - if (!ctx) - return; - if (ctx->cfg.logtype != LGTYP_PACKETS && - ctx->cfg.logtype != LGTYP_SSHRAW) - return; - logprintf(ctx, "Event Log: %s\r\n", event); - logflush(ctx); -} - -/* - * Log an SSH packet. - * If n_blanks != 0, blank or omit some parts. - * Set of blanking areas must be in increasing order. - */ -void log_packet(void *handle, int direction, int type, - char *texttype, const void *data, int len, - int n_blanks, const struct logblank_t *blanks, - const unsigned long *seq) -{ - struct LogContext *ctx = (struct LogContext *)handle; - char dumpdata[80], smalldata[5]; - int p = 0, b = 0, omitted = 0; - int output_pos = 0; /* NZ if pending output in dumpdata */ - - if (!(ctx->cfg.logtype == LGTYP_SSHRAW || - (ctx->cfg.logtype == LGTYP_PACKETS && texttype))) - return; - - /* Packet header. */ - if (texttype) { - if (seq) { - logprintf(ctx, "%s packet #0x%lx, type %d / 0x%02x (%s)\r\n", - direction == PKT_INCOMING ? "Incoming" : "Outgoing", - *seq, type, type, texttype); - } else { - logprintf(ctx, "%s packet type %d / 0x%02x (%s)\r\n", - direction == PKT_INCOMING ? "Incoming" : "Outgoing", - type, type, texttype); - } - } else { - logprintf(ctx, "%s raw data\r\n", - direction == PKT_INCOMING ? "Incoming" : "Outgoing"); - } - - /* - * Output a hex/ASCII dump of the packet body, blanking/omitting - * parts as specified. - */ - while (p < len) { - int blktype; - - /* Move to a current entry in the blanking array. */ - while ((b < n_blanks) && - (p >= blanks[b].offset + blanks[b].len)) - b++; - /* Work out what type of blanking to apply to - * this byte. */ - blktype = PKTLOG_EMIT; /* default */ - if ((b < n_blanks) && - (p >= blanks[b].offset) && - (p < blanks[b].offset + blanks[b].len)) - blktype = blanks[b].type; - - /* If we're about to stop omitting, it's time to say how - * much we omitted. */ - if ((blktype != PKTLOG_OMIT) && omitted) { - logprintf(ctx, " (%d byte%s omitted)\r\n", - omitted, (omitted==1?"":"s")); - omitted = 0; - } - - /* (Re-)initialise dumpdata as necessary - * (start of row, or if we've just stopped omitting) */ - if (!output_pos && !omitted) - sprintf(dumpdata, " %08x%*s\r\n", p-(p%16), 1+3*16+2+16, ""); - - /* Deal with the current byte. */ - if (blktype == PKTLOG_OMIT) { - omitted++; - } else { - int c; - if (blktype == PKTLOG_BLANK) { - c = 'X'; - sprintf(smalldata, "XX"); - } else { /* PKTLOG_EMIT */ - c = ((unsigned char *)data)[p]; - sprintf(smalldata, "%02x", c); - } - dumpdata[10+2+3*(p%16)] = smalldata[0]; - dumpdata[10+2+3*(p%16)+1] = smalldata[1]; - dumpdata[10+1+3*16+2+(p%16)] = (isprint(c) ? c : '.'); - output_pos = (p%16) + 1; - } - - p++; - - /* Flush row if necessary */ - if (((p % 16) == 0) || (p == len) || omitted) { - if (output_pos) { - strcpy(dumpdata + 10+1+3*16+2+output_pos, "\r\n"); - logwrite(ctx, dumpdata, strlen(dumpdata)); - output_pos = 0; - } - } - - } - - /* Tidy up */ - if (omitted) - logprintf(ctx, " (%d byte%s omitted)\r\n", - omitted, (omitted==1?"":"s")); - logflush(ctx); -} - -void *log_init(void *frontend, Config *cfg) -{ - struct LogContext *ctx = snew(struct LogContext); - ctx->lgfp = NULL; - ctx->state = L_CLOSED; - ctx->frontend = frontend; - ctx->cfg = *cfg; /* STRUCTURE COPY */ - bufchain_init(&ctx->queue); - return ctx; -} - -void log_free(void *handle) -{ - struct LogContext *ctx = (struct LogContext *)handle; - - logfclose(ctx); - bufchain_clear(&ctx->queue); - sfree(ctx); -} - -void log_reconfig(void *handle, Config *cfg) -{ - struct LogContext *ctx = (struct LogContext *)handle; - int reset_logging; - - if (!filename_equal(ctx->cfg.logfilename, cfg->logfilename) || - ctx->cfg.logtype != cfg->logtype) - reset_logging = TRUE; - else - reset_logging = FALSE; - - if (reset_logging) - logfclose(ctx); - - ctx->cfg = *cfg; /* STRUCTURE COPY */ - - if (reset_logging) - logfopen(ctx); -} - -/* - * translate format codes into time/date strings - * and insert them into log file name - * - * "&Y":YYYY "&m":MM "&d":DD "&T":hhmmss "&h": "&&":& - */ -static void xlatlognam(Filename *dest, Filename src, - char *hostname, struct tm *tm) { - char buf[10], *bufp; - int size; - char buffer[FILENAME_MAX]; - int len = sizeof(buffer)-1; - char *d; - const char *s; - - d = buffer; - s = filename_to_str(&src); - - while (*s) { - /* Let (bufp, len) be the string to append. */ - bufp = buf; /* don't usually override this */ - if (*s == '&') { - char c; - s++; - size = 0; - if (*s) switch (c = *s++, tolower((unsigned char)c)) { - case 'y': - size = strftime(buf, sizeof(buf), "%Y", tm); - break; - case 'm': - size = strftime(buf, sizeof(buf), "%m", tm); - break; - case 'd': - size = strftime(buf, sizeof(buf), "%d", tm); - break; - case 't': - size = strftime(buf, sizeof(buf), "%H%M%S", tm); - break; - case 'h': - bufp = hostname; - size = strlen(bufp); - break; - default: - buf[0] = '&'; - size = 1; - if (c != '&') - buf[size++] = c; - } - } else { - buf[0] = *s++; - size = 1; - } - if (size > len) - size = len; - memcpy(d, bufp, size); - d += size; - len -= size; - } - *d = '\0'; - - *dest = filename_from_str(buffer); -} diff --git a/tools/plink/misc.c b/tools/plink/misc.c deleted file mode 100644 index 4aeab5028..000000000 --- a/tools/plink/misc.c +++ /dev/null @@ -1,655 +0,0 @@ -/* - * Platform-independent routines shared between all PuTTY programs. - */ - -#include -#include -#include -#include -#include -#include -#include "putty.h" - -/* - * Parse a string block size specification. This is approximately a - * subset of the block size specs supported by GNU fileutils: - * "nk" = n kilobytes - * "nM" = n megabytes - * "nG" = n gigabytes - * All numbers are decimal, and suffixes refer to powers of two. - * Case-insensitive. - */ -unsigned long parse_blocksize(const char *bs) -{ - char *suf; - unsigned long r = strtoul(bs, &suf, 10); - if (*suf != '\0') { - while (*suf && isspace((unsigned char)*suf)) suf++; - switch (*suf) { - case 'k': case 'K': - r *= 1024ul; - break; - case 'm': case 'M': - r *= 1024ul * 1024ul; - break; - case 'g': case 'G': - r *= 1024ul * 1024ul * 1024ul; - break; - case '\0': - default: - break; - } - } - return r; -} - -/* - * Parse a ^C style character specification. - * Returns NULL in `next' if we didn't recognise it as a control character, - * in which case `c' should be ignored. - * The precise current parsing is an oddity inherited from the terminal - * answerback-string parsing code. All sequences start with ^; all except - * ^<123> are two characters. The ones that are worth keeping are probably: - * ^? 127 - * ^@A-Z[\]^_ 0-31 - * a-z 1-26 - * specified by number (decimal, 0octal, 0xHEX) - * ~ ^ escape - */ -char ctrlparse(char *s, char **next) -{ - char c = 0; - if (*s != '^') { - *next = NULL; - } else { - s++; - if (*s == '\0') { - *next = NULL; - } else if (*s == '<') { - s++; - c = (char)strtol(s, next, 0); - if ((*next == s) || (**next != '>')) { - c = 0; - *next = NULL; - } else - (*next)++; - } else if (*s >= 'a' && *s <= 'z') { - c = (*s - ('a' - 1)); - *next = s+1; - } else if ((*s >= '@' && *s <= '_') || *s == '?' || (*s & 0x80)) { - c = ('@' ^ *s); - *next = s+1; - } else if (*s == '~') { - c = '^'; - *next = s+1; - } - } - return c; -} - -prompts_t *new_prompts(void *frontend) -{ - prompts_t *p = snew(prompts_t); - p->prompts = NULL; - p->n_prompts = 0; - p->frontend = frontend; - p->data = NULL; - p->to_server = TRUE; /* to be on the safe side */ - p->name = p->instruction = NULL; - p->name_reqd = p->instr_reqd = FALSE; - return p; -} -void add_prompt(prompts_t *p, char *promptstr, int echo, size_t len) -{ - prompt_t *pr = snew(prompt_t); - char *result = snewn(len, char); - pr->prompt = promptstr; - pr->echo = echo; - pr->result = result; - pr->result_len = len; - p->n_prompts++; - p->prompts = sresize(p->prompts, p->n_prompts, prompt_t *); - p->prompts[p->n_prompts-1] = pr; -} -void free_prompts(prompts_t *p) -{ - size_t i; - for (i=0; i < p->n_prompts; i++) { - prompt_t *pr = p->prompts[i]; - memset(pr->result, 0, pr->result_len); /* burn the evidence */ - sfree(pr->result); - sfree(pr->prompt); - sfree(pr); - } - sfree(p->prompts); - sfree(p->name); - sfree(p->instruction); - sfree(p); -} - -/* ---------------------------------------------------------------------- - * String handling routines. - */ - -char *dupstr(const char *s) -{ - char *p = NULL; - if (s) { - int len = strlen(s); - p = snewn(len + 1, char); - strcpy(p, s); - } - return p; -} - -/* Allocate the concatenation of N strings. Terminate arg list with NULL. */ -char *dupcat(const char *s1, ...) -{ - int len; - char *p, *q, *sn; - va_list ap; - - len = strlen(s1); - va_start(ap, s1); - while (1) { - sn = va_arg(ap, char *); - if (!sn) - break; - len += strlen(sn); - } - va_end(ap); - - p = snewn(len + 1, char); - strcpy(p, s1); - q = p + strlen(p); - - va_start(ap, s1); - while (1) { - sn = va_arg(ap, char *); - if (!sn) - break; - strcpy(q, sn); - q += strlen(q); - } - va_end(ap); - - return p; -} - -/* - * Do an sprintf(), but into a custom-allocated buffer. - * - * Currently I'm doing this via vsnprintf. This has worked so far, - * but it's not good, because vsnprintf is not available on all - * platforms. There's an ifdef to use `_vsnprintf', which seems - * to be the local name for it on Windows. Other platforms may - * lack it completely, in which case it'll be time to rewrite - * this function in a totally different way. - * - * The only `properly' portable solution I can think of is to - * implement my own format string scanner, which figures out an - * upper bound for the length of each formatting directive, - * allocates the buffer as it goes along, and calls sprintf() to - * actually process each directive. If I ever need to actually do - * this, some caveats: - * - * - It's very hard to find a reliable upper bound for - * floating-point values. %f, in particular, when supplied with - * a number near to the upper or lower limit of representable - * numbers, could easily take several hundred characters. It's - * probably feasible to predict this statically using the - * constants in , or even to predict it dynamically by - * looking at the exponent of the specific float provided, but - * it won't be fun. - * - * - Don't forget to _check_, after calling sprintf, that it's - * used at most the amount of space we had available. - * - * - Fault any formatting directive we don't fully understand. The - * aim here is to _guarantee_ that we never overflow the buffer, - * because this is a security-critical function. If we see a - * directive we don't know about, we should panic and die rather - * than run any risk. - */ -char *dupprintf(const char *fmt, ...) -{ - char *ret; - va_list ap; - va_start(ap, fmt); - ret = dupvprintf(fmt, ap); - va_end(ap); - return ret; -} -char *dupvprintf(const char *fmt, va_list ap) -{ - char *buf; - int len, size; - - buf = snewn(512, char); - size = 512; - - while (1) { -#ifdef _WINDOWS -#define vsnprintf _vsnprintf -#endif -#ifdef va_copy - /* Use the `va_copy' macro mandated by C99, if present. - * XXX some environments may have this as __va_copy() */ - va_list aq; - va_copy(aq, ap); - len = vsnprintf(buf, size, fmt, aq); - va_end(aq); -#else - /* Ugh. No va_copy macro, so do something nasty. - * Technically, you can't reuse a va_list like this: it is left - * unspecified whether advancing a va_list pointer modifies its - * value or something it points to, so on some platforms calling - * vsnprintf twice on the same va_list might fail hideously - * (indeed, it has been observed to). - * XXX the autoconf manual suggests that using memcpy() will give - * "maximum portability". */ - len = vsnprintf(buf, size, fmt, ap); -#endif - if (len >= 0 && len < size) { - /* This is the C99-specified criterion for snprintf to have - * been completely successful. */ - return buf; - } else if (len > 0) { - /* This is the C99 error condition: the returned length is - * the required buffer size not counting the NUL. */ - size = len + 1; - } else { - /* This is the pre-C99 glibc error condition: <0 means the - * buffer wasn't big enough, so we enlarge it a bit and hope. */ - size += 512; - } - buf = sresize(buf, size, char); - } -} - -/* - * Read an entire line of text from a file. Return a buffer - * malloced to be as big as necessary (caller must free). - */ -char *fgetline(FILE *fp) -{ - char *ret = snewn(512, char); - int size = 512, len = 0; - while (fgets(ret + len, size - len, fp)) { - len += strlen(ret + len); - if (ret[len-1] == '\n') - break; /* got a newline, we're done */ - size = len + 512; - ret = sresize(ret, size, char); - } - if (len == 0) { /* first fgets returned NULL */ - sfree(ret); - return NULL; - } - ret[len] = '\0'; - return ret; -} - -/* ---------------------------------------------------------------------- - * Base64 encoding routine. This is required in public-key writing - * but also in HTTP proxy handling, so it's centralised here. - */ - -void base64_encode_atom(unsigned char *data, int n, char *out) -{ - static const char base64_chars[] = - "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; - - unsigned word; - - word = data[0] << 16; - if (n > 1) - word |= data[1] << 8; - if (n > 2) - word |= data[2]; - out[0] = base64_chars[(word >> 18) & 0x3F]; - out[1] = base64_chars[(word >> 12) & 0x3F]; - if (n > 1) - out[2] = base64_chars[(word >> 6) & 0x3F]; - else - out[2] = '='; - if (n > 2) - out[3] = base64_chars[word & 0x3F]; - else - out[3] = '='; -} - -/* ---------------------------------------------------------------------- - * Generic routines to deal with send buffers: a linked list of - * smallish blocks, with the operations - * - * - add an arbitrary amount of data to the end of the list - * - remove the first N bytes from the list - * - return a (pointer,length) pair giving some initial data in - * the list, suitable for passing to a send or write system - * call - * - retrieve a larger amount of initial data from the list - * - return the current size of the buffer chain in bytes - */ - -#define BUFFER_GRANULE 512 - -struct bufchain_granule { - struct bufchain_granule *next; - int buflen, bufpos; - char buf[BUFFER_GRANULE]; -}; - -void bufchain_init(bufchain *ch) -{ - ch->head = ch->tail = NULL; - ch->buffersize = 0; -} - -void bufchain_clear(bufchain *ch) -{ - struct bufchain_granule *b; - while (ch->head) { - b = ch->head; - ch->head = ch->head->next; - sfree(b); - } - ch->tail = NULL; - ch->buffersize = 0; -} - -int bufchain_size(bufchain *ch) -{ - return ch->buffersize; -} - -void bufchain_add(bufchain *ch, const void *data, int len) -{ - const char *buf = (const char *)data; - - if (len == 0) return; - - ch->buffersize += len; - - if (ch->tail && ch->tail->buflen < BUFFER_GRANULE) { - int copylen = min(len, BUFFER_GRANULE - ch->tail->buflen); - memcpy(ch->tail->buf + ch->tail->buflen, buf, copylen); - buf += copylen; - len -= copylen; - ch->tail->buflen += copylen; - } - while (len > 0) { - int grainlen = min(len, BUFFER_GRANULE); - struct bufchain_granule *newbuf; - newbuf = snew(struct bufchain_granule); - newbuf->bufpos = 0; - newbuf->buflen = grainlen; - memcpy(newbuf->buf, buf, grainlen); - buf += grainlen; - len -= grainlen; - if (ch->tail) - ch->tail->next = newbuf; - else - ch->head = ch->tail = newbuf; - newbuf->next = NULL; - ch->tail = newbuf; - } -} - -void bufchain_consume(bufchain *ch, int len) -{ - struct bufchain_granule *tmp; - - assert(ch->buffersize >= len); - while (len > 0) { - int remlen = len; - assert(ch->head != NULL); - if (remlen >= ch->head->buflen - ch->head->bufpos) { - remlen = ch->head->buflen - ch->head->bufpos; - tmp = ch->head; - ch->head = tmp->next; - sfree(tmp); - if (!ch->head) - ch->tail = NULL; - } else - ch->head->bufpos += remlen; - ch->buffersize -= remlen; - len -= remlen; - } -} - -void bufchain_prefix(bufchain *ch, void **data, int *len) -{ - *len = ch->head->buflen - ch->head->bufpos; - *data = ch->head->buf + ch->head->bufpos; -} - -void bufchain_fetch(bufchain *ch, void *data, int len) -{ - struct bufchain_granule *tmp; - char *data_c = (char *)data; - - tmp = ch->head; - - assert(ch->buffersize >= len); - while (len > 0) { - int remlen = len; - - assert(tmp != NULL); - if (remlen >= tmp->buflen - tmp->bufpos) - remlen = tmp->buflen - tmp->bufpos; - memcpy(data_c, tmp->buf + tmp->bufpos, remlen); - - tmp = tmp->next; - len -= remlen; - data_c += remlen; - } -} - -/* ---------------------------------------------------------------------- - * My own versions of malloc, realloc and free. Because I want - * malloc and realloc to bomb out and exit the program if they run - * out of memory, realloc to reliably call malloc if passed a NULL - * pointer, and free to reliably do nothing if passed a NULL - * pointer. We can also put trace printouts in, if we need to; and - * we can also replace the allocator with an ElectricFence-like - * one. - */ - -#ifdef MINEFIELD -void *minefield_c_malloc(size_t size); -void minefield_c_free(void *p); -void *minefield_c_realloc(void *p, size_t size); -#endif - -#ifdef MALLOC_LOG -static FILE *fp = NULL; - -static char *mlog_file = NULL; -static int mlog_line = 0; - -void mlog(char *file, int line) -{ - mlog_file = file; - mlog_line = line; - if (!fp) { - fp = fopen("putty_mem.log", "w"); - setvbuf(fp, NULL, _IONBF, BUFSIZ); - } - if (fp) - fprintf(fp, "%s:%d: ", file, line); -} -#endif - -void *safemalloc(size_t n, size_t size) -{ - void *p; - - if (n > INT_MAX / size) { - p = NULL; - } else { - size *= n; - if (size == 0) size = 1; -#ifdef MINEFIELD - p = minefield_c_malloc(size); -#else - p = malloc(size); -#endif - } - - if (!p) { - char str[200]; -#ifdef MALLOC_LOG - sprintf(str, "Out of memory! (%s:%d, size=%d)", - mlog_file, mlog_line, size); - fprintf(fp, "*** %s\n", str); - fclose(fp); -#else - strcpy(str, "Out of memory!"); -#endif - modalfatalbox(str); - } -#ifdef MALLOC_LOG - if (fp) - fprintf(fp, "malloc(%d) returns %p\n", size, p); -#endif - return p; -} - -void *saferealloc(void *ptr, size_t n, size_t size) -{ - void *p; - - if (n > INT_MAX / size) { - p = NULL; - } else { - size *= n; - if (!ptr) { -#ifdef MINEFIELD - p = minefield_c_malloc(size); -#else - p = malloc(size); -#endif - } else { -#ifdef MINEFIELD - p = minefield_c_realloc(ptr, size); -#else - p = realloc(ptr, size); -#endif - } - } - - if (!p) { - char str[200]; -#ifdef MALLOC_LOG - sprintf(str, "Out of memory! (%s:%d, size=%d)", - mlog_file, mlog_line, size); - fprintf(fp, "*** %s\n", str); - fclose(fp); -#else - strcpy(str, "Out of memory!"); -#endif - modalfatalbox(str); - } -#ifdef MALLOC_LOG - if (fp) - fprintf(fp, "realloc(%p,%d) returns %p\n", ptr, size, p); -#endif - return p; -} - -void safefree(void *ptr) -{ - if (ptr) { -#ifdef MALLOC_LOG - if (fp) - fprintf(fp, "free(%p)\n", ptr); -#endif -#ifdef MINEFIELD - minefield_c_free(ptr); -#else - free(ptr); -#endif - } -#ifdef MALLOC_LOG - else if (fp) - fprintf(fp, "freeing null pointer - no action taken\n"); -#endif -} - -/* ---------------------------------------------------------------------- - * Debugging routines. - */ - -#ifdef DEBUG -extern void dputs(char *); /* defined in per-platform *misc.c */ - -void debug_printf(char *fmt, ...) -{ - char *buf; - va_list ap; - - va_start(ap, fmt); - buf = dupvprintf(fmt, ap); - dputs(buf); - sfree(buf); - va_end(ap); -} - - -void debug_memdump(void *buf, int len, int L) -{ - int i; - unsigned char *p = buf; - char foo[17]; - if (L) { - int delta; - debug_printf("\t%d (0x%x) bytes:\n", len, len); - delta = 15 & (unsigned long int) p; - p -= delta; - len += delta; - } - for (; 0 < len; p += 16, len -= 16) { - dputs(" "); - if (L) - debug_printf("%p: ", p); - strcpy(foo, "................"); /* sixteen dots */ - for (i = 0; i < 16 && i < len; ++i) { - if (&p[i] < (unsigned char *) buf) { - dputs(" "); /* 3 spaces */ - foo[i] = ' '; - } else { - debug_printf("%c%02.2x", - &p[i] != (unsigned char *) buf - && i % 4 ? '.' : ' ', p[i] - ); - if (p[i] >= ' ' && p[i] <= '~') - foo[i] = (char) p[i]; - } - } - foo[i] = '\0'; - debug_printf("%*s%s\n", (16 - i) * 3 + 2, "", foo); - } -} - -#endif /* def DEBUG */ - -/* - * Determine whether or not a Config structure represents a session - * which can sensibly be launched right now. - */ -int cfg_launchable(const Config *cfg) -{ - if (cfg->protocol == PROT_SERIAL) - return cfg->serline[0] != 0; - else - return cfg->host[0] != 0; -} - -char const *cfg_dest(const Config *cfg) -{ - if (cfg->protocol == PROT_SERIAL) - return cfg->serline; - else - return cfg->host; -} diff --git a/tools/plink/misc.h b/tools/plink/misc.h deleted file mode 100644 index 11233147a..000000000 --- a/tools/plink/misc.h +++ /dev/null @@ -1,132 +0,0 @@ -/* - * Header for misc.c. - */ - -#ifndef PUTTY_MISC_H -#define PUTTY_MISC_H - -#include "puttymem.h" - -#include /* for FILE * */ -#include /* for va_list */ -#include /* for struct tm */ - -#ifndef FALSE -#define FALSE 0 -#endif -#ifndef TRUE -#define TRUE 1 -#endif - -typedef struct Filename Filename; -typedef struct FontSpec FontSpec; - -unsigned long parse_blocksize(const char *bs); -char ctrlparse(char *s, char **next); - -char *dupstr(const char *s); -char *dupcat(const char *s1, ...); -char *dupprintf(const char *fmt, ...); -char *dupvprintf(const char *fmt, va_list ap); - -char *fgetline(FILE *fp); - -void base64_encode_atom(unsigned char *data, int n, char *out); - -struct bufchain_granule; -typedef struct bufchain_tag { - struct bufchain_granule *head, *tail; - int buffersize; /* current amount of buffered data */ -} bufchain; - -void bufchain_init(bufchain *ch); -void bufchain_clear(bufchain *ch); -int bufchain_size(bufchain *ch); -void bufchain_add(bufchain *ch, const void *data, int len); -void bufchain_prefix(bufchain *ch, void **data, int *len); -void bufchain_consume(bufchain *ch, int len); -void bufchain_fetch(bufchain *ch, void *data, int len); - -struct tm ltime(void); - -/* - * Debugging functions. - * - * Output goes to debug.log - * - * debug(()) (note the double brackets) is like printf(). - * - * dmemdump() and dmemdumpl() both do memory dumps. The difference - * is that dmemdumpl() is more suited for when the memory address is - * important (say because you'll be recording pointer values later - * on). dmemdump() is more concise. - */ - -#ifdef DEBUG -void debug_printf(char *fmt, ...); -void debug_memdump(void *buf, int len, int L); -#define debug(x) (debug_printf x) -#define dmemdump(buf,len) debug_memdump (buf, len, 0); -#define dmemdumpl(buf,len) debug_memdump (buf, len, 1); -#else -#define debug(x) -#define dmemdump(buf,len) -#define dmemdumpl(buf,len) -#endif - -#ifndef lenof -#define lenof(x) ( (sizeof((x))) / (sizeof(*(x)))) -#endif - -#ifndef min -#define min(x,y) ( (x) < (y) ? (x) : (y) ) -#endif -#ifndef max -#define max(x,y) ( (x) > (y) ? (x) : (y) ) -#endif - -#define GET_32BIT_LSB_FIRST(cp) \ - (((unsigned long)(unsigned char)(cp)[0]) | \ - ((unsigned long)(unsigned char)(cp)[1] << 8) | \ - ((unsigned long)(unsigned char)(cp)[2] << 16) | \ - ((unsigned long)(unsigned char)(cp)[3] << 24)) - -#define PUT_32BIT_LSB_FIRST(cp, value) ( \ - (cp)[0] = (unsigned char)(value), \ - (cp)[1] = (unsigned char)((value) >> 8), \ - (cp)[2] = (unsigned char)((value) >> 16), \ - (cp)[3] = (unsigned char)((value) >> 24) ) - -#define GET_16BIT_LSB_FIRST(cp) \ - (((unsigned long)(unsigned char)(cp)[0]) | \ - ((unsigned long)(unsigned char)(cp)[1] << 8)) - -#define PUT_16BIT_LSB_FIRST(cp, value) ( \ - (cp)[0] = (unsigned char)(value), \ - (cp)[1] = (unsigned char)((value) >> 8) ) - -#define GET_32BIT_MSB_FIRST(cp) \ - (((unsigned long)(unsigned char)(cp)[0] << 24) | \ - ((unsigned long)(unsigned char)(cp)[1] << 16) | \ - ((unsigned long)(unsigned char)(cp)[2] << 8) | \ - ((unsigned long)(unsigned char)(cp)[3])) - -#define GET_32BIT(cp) GET_32BIT_MSB_FIRST(cp) - -#define PUT_32BIT_MSB_FIRST(cp, value) ( \ - (cp)[0] = (unsigned char)((value) >> 24), \ - (cp)[1] = (unsigned char)((value) >> 16), \ - (cp)[2] = (unsigned char)((value) >> 8), \ - (cp)[3] = (unsigned char)(value) ) - -#define PUT_32BIT(cp, value) PUT_32BIT_MSB_FIRST(cp, value) - -#define GET_16BIT_MSB_FIRST(cp) \ - (((unsigned long)(unsigned char)(cp)[0] << 8) | \ - ((unsigned long)(unsigned char)(cp)[1])) - -#define PUT_16BIT_MSB_FIRST(cp, value) ( \ - (cp)[0] = (unsigned char)((value) >> 8), \ - (cp)[1] = (unsigned char)(value) ) - -#endif diff --git a/tools/plink/network.h b/tools/plink/network.h deleted file mode 100644 index b1b559047..000000000 --- a/tools/plink/network.h +++ /dev/null @@ -1,247 +0,0 @@ -/* - * Networking abstraction in PuTTY. - * - * The way this works is: a back end can choose to open any number - * of sockets - including zero, which might be necessary in some. - * It can register a bunch of callbacks (most notably for when - * data is received) for each socket, and it can call the networking - * abstraction to send data without having to worry about blocking. - * The stuff behind the abstraction takes care of selects and - * nonblocking writes and all that sort of painful gubbins. - */ - -#ifndef PUTTY_NETWORK_H -#define PUTTY_NETWORK_H - -#ifndef DONE_TYPEDEFS -#define DONE_TYPEDEFS -typedef struct config_tag Config; -typedef struct backend_tag Backend; -typedef struct terminal_tag Terminal; -#endif - -typedef struct SockAddr_tag *SockAddr; -/* pay attention to levels of indirection */ -typedef struct socket_function_table **Socket; -typedef struct plug_function_table **Plug; - -#ifndef OSSOCKET_DEFINED -typedef void *OSSocket; -#endif - -struct socket_function_table { - Plug(*plug) (Socket s, Plug p); - /* use a different plug (return the old one) */ - /* if p is NULL, it doesn't change the plug */ - /* but it does return the one it's using */ - void (*close) (Socket s); - int (*write) (Socket s, const char *data, int len); - int (*write_oob) (Socket s, const char *data, int len); - void (*flush) (Socket s); - void (*set_private_ptr) (Socket s, void *ptr); - void *(*get_private_ptr) (Socket s); - void (*set_frozen) (Socket s, int is_frozen); - /* ignored by tcp, but vital for ssl */ - const char *(*socket_error) (Socket s); -}; - -struct plug_function_table { - void (*log)(Plug p, int type, SockAddr addr, int port, - const char *error_msg, int error_code); - /* - * Passes the client progress reports on the process of setting - * up the connection. - * - * - type==0 means we are about to try to connect to address - * `addr' (error_msg and error_code are ignored) - * - type==1 means we have failed to connect to address `addr' - * (error_msg and error_code are supplied). This is not a - * fatal error - we may well have other candidate addresses - * to fall back to. When it _is_ fatal, the closing() - * function will be called. - */ - int (*closing) - (Plug p, const char *error_msg, int error_code, int calling_back); - /* error_msg is NULL iff it is not an error (ie it closed normally) */ - /* calling_back != 0 iff there is a Plug function */ - /* currently running (would cure the fixme in try_send()) */ - int (*receive) (Plug p, int urgent, char *data, int len); - /* - * - urgent==0. `data' points to `len' bytes of perfectly - * ordinary data. - * - * - urgent==1. `data' points to `len' bytes of data, - * which were read from before an Urgent pointer. - * - * - urgent==2. `data' points to `len' bytes of data, - * the first of which was the one at the Urgent mark. - */ - void (*sent) (Plug p, int bufsize); - /* - * The `sent' function is called when the pending send backlog - * on a socket is cleared or partially cleared. The new backlog - * size is passed in the `bufsize' parameter. - */ - int (*accepting)(Plug p, OSSocket sock); - /* - * returns 0 if the host at address addr is a valid host for connecting or error - */ -}; - -/* proxy indirection layer */ -/* NB, control of 'addr' is passed via new_connection, which takes - * responsibility for freeing it */ -Socket new_connection(SockAddr addr, char *hostname, - int port, int privport, - int oobinline, int nodelay, int keepalive, - Plug plug, const Config *cfg); -Socket new_listener(char *srcaddr, int port, Plug plug, int local_host_only, - const Config *cfg, int addressfamily); -SockAddr name_lookup(char *host, int port, char **canonicalname, - const Config *cfg, int addressfamily); - -/* platform-dependent callback from new_connection() */ -/* (same caveat about addr as new_connection()) */ -Socket platform_new_connection(SockAddr addr, char *hostname, - int port, int privport, - int oobinline, int nodelay, int keepalive, - Plug plug, const Config *cfg); - -/* socket functions */ - -void sk_init(void); /* called once at program startup */ -void sk_cleanup(void); /* called just before program exit */ - -SockAddr sk_namelookup(const char *host, char **canonicalname, int address_family); -SockAddr sk_nonamelookup(const char *host); -void sk_getaddr(SockAddr addr, char *buf, int buflen); -int sk_hostname_is_local(char *name); -int sk_address_is_local(SockAddr addr); -int sk_addrtype(SockAddr addr); -void sk_addrcopy(SockAddr addr, char *buf); -void sk_addr_free(SockAddr addr); -/* sk_addr_dup generates another SockAddr which contains the same data - * as the original one and can be freed independently. May not actually - * physically _duplicate_ it: incrementing a reference count so that - * one more free is required before it disappears is an acceptable - * implementation. */ -SockAddr sk_addr_dup(SockAddr addr); - -/* NB, control of 'addr' is passed via sk_new, which takes responsibility - * for freeing it, as for new_connection() */ -Socket sk_new(SockAddr addr, int port, int privport, int oobinline, - int nodelay, int keepalive, Plug p); - -Socket sk_newlistener(char *srcaddr, int port, Plug plug, int local_host_only, int address_family); - -Socket sk_register(OSSocket sock, Plug plug); - -#define sk_plug(s,p) (((*s)->plug) (s, p)) -#define sk_close(s) (((*s)->close) (s)) -#define sk_write(s,buf,len) (((*s)->write) (s, buf, len)) -#define sk_write_oob(s,buf,len) (((*s)->write_oob) (s, buf, len)) -#define sk_flush(s) (((*s)->flush) (s)) - -#ifdef DEFINE_PLUG_METHOD_MACROS -#define plug_log(p,type,addr,port,msg,code) (((*p)->log) (p, type, addr, port, msg, code)) -#define plug_closing(p,msg,code,callback) (((*p)->closing) (p, msg, code, callback)) -#define plug_receive(p,urgent,buf,len) (((*p)->receive) (p, urgent, buf, len)) -#define plug_sent(p,bufsize) (((*p)->sent) (p, bufsize)) -#define plug_accepting(p, sock) (((*p)->accepting)(p, sock)) -#endif - -/* - * Each socket abstraction contains a `void *' private field in - * which the client can keep state. - * - * This is perhaps unnecessary now that we have the notion of a plug, - * but there is some existing code that uses it, so it stays. - */ -#define sk_set_private_ptr(s, ptr) (((*s)->set_private_ptr) (s, ptr)) -#define sk_get_private_ptr(s) (((*s)->get_private_ptr) (s)) - -/* - * Special error values are returned from sk_namelookup and sk_new - * if there's a problem. These functions extract an error message, - * or return NULL if there's no problem. - */ -const char *sk_addr_error(SockAddr addr); -#define sk_socket_error(s) (((*s)->socket_error) (s)) - -/* - * Set the `frozen' flag on a socket. A frozen socket is one in - * which all READABLE notifications are ignored, so that data is - * not accepted from the peer until the socket is unfrozen. This - * exists for two purposes: - * - * - Port forwarding: when a local listening port receives a - * connection, we do not want to receive data from the new - * socket until we have somewhere to send it. Hence, we freeze - * the socket until its associated SSH channel is ready; then we - * unfreeze it and pending data is delivered. - * - * - Socket buffering: if an SSH channel (or the whole connection) - * backs up or presents a zero window, we must freeze the - * associated local socket in order to avoid unbounded buffer - * growth. - */ -#define sk_set_frozen(s, is_frozen) (((*s)->set_frozen) (s, is_frozen)) - -/* - * Call this after an operation that might have tried to send on a - * socket, to clean up any pending network errors. - */ -void net_pending_errors(void); - -/* - * Simple wrapper on getservbyname(), needed by ssh.c. Returns the - * port number, in host byte order (suitable for printf and so on). - * Returns 0 on failure. Any platform not supporting getservbyname - * can just return 0 - this function is not required to handle - * numeric port specifications. - */ -int net_service_lookup(char *service); - -/* - * Look up the local hostname; return value needs freeing. - * May return NULL. - */ -char *get_hostname(void); - -/********** SSL stuff **********/ - -/* - * This section is subject to change, but you get the general idea - * of what it will eventually look like. - */ - -typedef struct certificate *Certificate; -typedef struct our_certificate *Our_Certificate; - /* to be defined somewhere else, somehow */ - -typedef struct ssl_client_socket_function_table **SSL_Client_Socket; -typedef struct ssl_client_plug_function_table **SSL_Client_Plug; - -struct ssl_client_socket_function_table { - struct socket_function_table base; - void (*renegotiate) (SSL_Client_Socket s); - /* renegotiate the cipher spec */ -}; - -struct ssl_client_plug_function_table { - struct plug_function_table base; - int (*refuse_cert) (SSL_Client_Plug p, Certificate cert[]); - /* do we accept this certificate chain? If not, why not? */ - /* cert[0] is the server's certificate, cert[] is NULL-terminated */ - /* the last certificate may or may not be the root certificate */ - Our_Certificate(*client_cert) (SSL_Client_Plug p); - /* the server wants us to identify ourselves */ - /* may return NULL if we want anonymity */ -}; - -SSL_Client_Socket sk_ssl_client_over(Socket s, /* pre-existing (tcp) connection */ - SSL_Client_Plug p); - -#define sk_renegotiate(s) (((*s)->renegotiate) (s)) - -#endif diff --git a/tools/plink/pinger.c b/tools/plink/pinger.c deleted file mode 100644 index b6fde2456..000000000 --- a/tools/plink/pinger.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - * pinger.c: centralised module that deals with sending TS_PING - * keepalives, to avoid replicating this code in multiple backends. - */ - -#include "putty.h" - -struct pinger_tag { - int interval; - int pending; - long next; - Backend *back; - void *backhandle; -}; - -static void pinger_schedule(Pinger pinger); - -static void pinger_timer(void *ctx, long now) -{ - Pinger pinger = (Pinger)ctx; - - if (pinger->pending && now - pinger->next >= 0) { - pinger->back->special(pinger->backhandle, TS_PING); - pinger->pending = FALSE; - pinger_schedule(pinger); - } -} - -static void pinger_schedule(Pinger pinger) -{ - int next; - - if (!pinger->interval) { - pinger->pending = FALSE; /* cancel any pending ping */ - return; - } - - next = schedule_timer(pinger->interval * TICKSPERSEC, - pinger_timer, pinger); - if (!pinger->pending || next < pinger->next) { - pinger->next = next; - pinger->pending = TRUE; - } -} - -Pinger pinger_new(Config *cfg, Backend *back, void *backhandle) -{ - Pinger pinger = snew(struct pinger_tag); - - pinger->interval = cfg->ping_interval; - pinger->pending = FALSE; - pinger->back = back; - pinger->backhandle = backhandle; - pinger_schedule(pinger); - - return pinger; -} - -void pinger_reconfig(Pinger pinger, Config *oldcfg, Config *newcfg) -{ - if (oldcfg->ping_interval != newcfg->ping_interval) { - pinger->interval = newcfg->ping_interval; - pinger_schedule(pinger); - } -} - -void pinger_free(Pinger pinger) -{ - expire_timer_context(pinger); - sfree(pinger); -} diff --git a/tools/plink/portfwd.c b/tools/plink/portfwd.c deleted file mode 100644 index e5874a697..000000000 --- a/tools/plink/portfwd.c +++ /dev/null @@ -1,556 +0,0 @@ -/* - * SSH port forwarding. - */ - -#include -#include - -#include "putty.h" -#include "ssh.h" - -#ifndef FALSE -#define FALSE 0 -#endif -#ifndef TRUE -#define TRUE 1 -#endif - -struct PFwdPrivate { - const struct plug_function_table *fn; - /* the above variable absolutely *must* be the first in this structure */ - void *c; /* (channel) data used by ssh.c */ - void *backhandle; /* instance of SSH backend itself */ - /* Note that backhandle need not be filled in if c is non-NULL */ - Socket s; - int throttled, throttle_override; - int ready; - /* - * `dynamic' does double duty. It's set to 0 for an ordinary - * forwarded port, and nonzero for SOCKS-style dynamic port - * forwarding; but it also represents the state of the SOCKS - * exchange. - */ - int dynamic; - /* - * `hostname' and `port' are the real hostname and port, once - * we know what we're connecting to; they're unused for this - * purpose while conducting a local SOCKS exchange, which means - * we can also use them as a buffer and pointer for reading - * data from the SOCKS client. - */ - char hostname[256+8]; - int port; - /* - * When doing dynamic port forwarding, we can receive - * connection data before we are actually able to send it; so - * we may have to temporarily hold some in a dynamically - * allocated buffer here. - */ - void *buffer; - int buflen; -}; - -static void pfd_log(Plug plug, int type, SockAddr addr, int port, - const char *error_msg, int error_code) -{ - /* we have to dump these since we have no interface to logging.c */ -} - -static int pfd_closing(Plug plug, const char *error_msg, int error_code, - int calling_back) -{ - struct PFwdPrivate *pr = (struct PFwdPrivate *) plug; - - /* - * We have no way to communicate down the forwarded connection, - * so if an error occurred on the socket, we just ignore it - * and treat it like a proper close. - */ - if (pr->c) - sshfwd_close(pr->c); - pfd_close(pr->s); - return 1; -} - -static int pfd_receive(Plug plug, int urgent, char *data, int len) -{ - struct PFwdPrivate *pr = (struct PFwdPrivate *) plug; - if (pr->dynamic) { - while (len--) { - /* - * Throughout SOCKS negotiation, "hostname" is re-used as a - * random protocol buffer with "port" storing the length. - */ - if (pr->port >= lenof(pr->hostname)) { - /* Request too long. */ - if ((pr->dynamic >> 12) == 4) { - /* Send back a SOCKS 4 error before closing. */ - char data[8]; - memset(data, 0, sizeof(data)); - data[1] = 91; /* generic `request rejected' */ - sk_write(pr->s, data, 8); - } - pfd_close(pr->s); - return 1; - } - pr->hostname[pr->port++] = *data++; - - /* - * Now check what's in the buffer to see if it's a - * valid and complete message in the SOCKS exchange. - */ - if ((pr->dynamic == 1 || (pr->dynamic >> 12) == 4) && - pr->hostname[0] == 4) { - /* - * SOCKS 4. - */ - if (pr->dynamic == 1) - pr->dynamic = 0x4000; - if (pr->port < 2) continue;/* don't have command code yet */ - if (pr->hostname[1] != 1) { - /* Not CONNECT. */ - /* Send back a SOCKS 4 error before closing. */ - char data[8]; - memset(data, 0, sizeof(data)); - data[1] = 91; /* generic `request rejected' */ - sk_write(pr->s, data, 8); - pfd_close(pr->s); - return 1; - } - if (pr->port <= 8) continue; /* haven't started user/hostname */ - if (pr->hostname[pr->port-1] != 0) - continue; /* haven't _finished_ user/hostname */ - /* - * Now we have a full SOCKS 4 request. Check it to - * see if it's a SOCKS 4A request. - */ - if (pr->hostname[4] == 0 && pr->hostname[5] == 0 && - pr->hostname[6] == 0 && pr->hostname[7] != 0) { - /* - * It's SOCKS 4A. So if we haven't yet - * collected the host name, we should continue - * waiting for data in order to do so; if we - * have, we can go ahead. - */ - int len; - if (pr->dynamic == 0x4000) { - pr->dynamic = 0x4001; - pr->port = 8; /* reset buffer to overwrite name */ - continue; - } - pr->hostname[0] = 0; /* reply version code */ - pr->hostname[1] = 90; /* request granted */ - sk_write(pr->s, pr->hostname, 8); - len= pr->port - 8; - pr->port = GET_16BIT_MSB_FIRST(pr->hostname+2); - memmove(pr->hostname, pr->hostname + 8, len); - goto connect; - } else { - /* - * It's SOCKS 4, which means we should format - * the IP address into the hostname string and - * then just go. - */ - pr->hostname[0] = 0; /* reply version code */ - pr->hostname[1] = 90; /* request granted */ - sk_write(pr->s, pr->hostname, 8); - pr->port = GET_16BIT_MSB_FIRST(pr->hostname+2); - sprintf(pr->hostname, "%d.%d.%d.%d", - (unsigned char)pr->hostname[4], - (unsigned char)pr->hostname[5], - (unsigned char)pr->hostname[6], - (unsigned char)pr->hostname[7]); - goto connect; - } - } - - if ((pr->dynamic == 1 || (pr->dynamic >> 12) == 5) && - pr->hostname[0] == 5) { - /* - * SOCKS 5. - */ - if (pr->dynamic == 1) - pr->dynamic = 0x5000; - - if (pr->dynamic == 0x5000) { - int i, method; - char data[2]; - /* - * We're receiving a set of method identifiers. - */ - if (pr->port < 2) continue;/* no method count yet */ - if (pr->port < 2 + (unsigned char)pr->hostname[1]) - continue; /* no methods yet */ - method = 0xFF; /* invalid */ - for (i = 0; i < (unsigned char)pr->hostname[1]; i++) - if (pr->hostname[2+i] == 0) { - method = 0;/* no auth */ - break; - } - data[0] = 5; - data[1] = method; - sk_write(pr->s, data, 2); - pr->dynamic = 0x5001; - pr->port = 0; /* re-empty the buffer */ - continue; - } - - if (pr->dynamic == 0x5001) { - /* - * We're receiving a SOCKS request. - */ - unsigned char reply[10]; /* SOCKS5 atyp=1 reply */ - int atype, alen = 0; - - /* - * Pre-fill reply packet. - * In all cases, we set BND.{HOST,ADDR} to 0.0.0.0:0 - * (atyp=1) in the reply; if we succeed, we don't know - * the right answers, and if we fail, they should be - * ignored. - */ - memset(reply, 0, lenof(reply)); - reply[0] = 5; /* VER */ - reply[3] = 1; /* ATYP = 1 (IPv4, 0.0.0.0:0) */ - - if (pr->port < 6) continue; - atype = (unsigned char)pr->hostname[3]; - if (atype == 1) /* IPv4 address */ - alen = 4; - if (atype == 4) /* IPv6 address */ - alen = 16; - if (atype == 3) /* domain name has leading length */ - alen = 1 + (unsigned char)pr->hostname[4]; - if (pr->port < 6 + alen) continue; - if (pr->hostname[1] != 1 || pr->hostname[2] != 0) { - /* Not CONNECT or reserved field nonzero - error */ - reply[1] = 1; /* generic failure */ - sk_write(pr->s, (char *) reply, lenof(reply)); - pfd_close(pr->s); - return 1; - } - /* - * Now we have a viable connect request. Switch - * on atype. - */ - pr->port = GET_16BIT_MSB_FIRST(pr->hostname+4+alen); - if (atype == 1) { - /* REP=0 (success) already */ - sk_write(pr->s, (char *) reply, lenof(reply)); - sprintf(pr->hostname, "%d.%d.%d.%d", - (unsigned char)pr->hostname[4], - (unsigned char)pr->hostname[5], - (unsigned char)pr->hostname[6], - (unsigned char)pr->hostname[7]); - goto connect; - } else if (atype == 3) { - /* REP=0 (success) already */ - sk_write(pr->s, (char *) reply, lenof(reply)); - memmove(pr->hostname, pr->hostname + 5, alen-1); - pr->hostname[alen-1] = '\0'; - goto connect; - } else { - /* - * Unknown address type. (FIXME: support IPv6!) - */ - reply[1] = 8; /* atype not supported */ - sk_write(pr->s, (char *) reply, lenof(reply)); - pfd_close(pr->s); - return 1; - } - } - } - - /* - * If we get here without either having done `continue' - * or `goto connect', it must be because there is no - * sensible interpretation of what's in our buffer. So - * close the connection rudely. - */ - pfd_close(pr->s); - return 1; - } - return 1; - - /* - * We come here when we're ready to make an actual - * connection. - */ - connect: - - /* - * Freeze the socket until the SSH server confirms the - * connection. - */ - sk_set_frozen(pr->s, 1); - - pr->c = new_sock_channel(pr->backhandle, pr->s); - if (pr->c == NULL) { - pfd_close(pr->s); - return 1; - } else { - /* asks to forward to the specified host/port for this */ - ssh_send_port_open(pr->c, pr->hostname, pr->port, "forwarding"); - } - pr->dynamic = 0; - - /* - * If there's any data remaining in our current buffer, - * save it to be sent on pfd_confirm(). - */ - if (len > 0) { - pr->buffer = snewn(len, char); - memcpy(pr->buffer, data, len); - pr->buflen = len; - } - } - if (pr->ready) { - if (sshfwd_write(pr->c, data, len) > 0) { - pr->throttled = 1; - sk_set_frozen(pr->s, 1); - } - } - return 1; -} - -static void pfd_sent(Plug plug, int bufsize) -{ - struct PFwdPrivate *pr = (struct PFwdPrivate *) plug; - - if (pr->c) - sshfwd_unthrottle(pr->c, bufsize); -} - -/* - * Called when receiving a PORT OPEN from the server - */ -const char *pfd_newconnect(Socket *s, char *hostname, int port, - void *c, const Config *cfg, int addressfamily) -{ - static const struct plug_function_table fn_table = { - pfd_log, - pfd_closing, - pfd_receive, - pfd_sent, - NULL - }; - - SockAddr addr; - const char *err; - char *dummy_realhost; - struct PFwdPrivate *pr; - - /* - * Try to find host. - */ - addr = name_lookup(hostname, port, &dummy_realhost, cfg, addressfamily); - if ((err = sk_addr_error(addr)) != NULL) { - sk_addr_free(addr); - return err; - } - - /* - * Open socket. - */ - pr = snew(struct PFwdPrivate); - pr->buffer = NULL; - pr->fn = &fn_table; - pr->throttled = pr->throttle_override = 0; - pr->ready = 1; - pr->c = c; - pr->backhandle = NULL; /* we shouldn't need this */ - pr->dynamic = 0; - - pr->s = *s = new_connection(addr, dummy_realhost, port, - 0, 1, 0, 0, (Plug) pr, cfg); - if ((err = sk_socket_error(*s)) != NULL) { - sfree(pr); - return err; - } - - sk_set_private_ptr(*s, pr); - return NULL; -} - -/* - called when someone connects to the local port - */ - -static int pfd_accepting(Plug p, OSSocket sock) -{ - static const struct plug_function_table fn_table = { - pfd_log, - pfd_closing, - pfd_receive, - pfd_sent, - NULL - }; - struct PFwdPrivate *pr, *org; - Socket s; - const char *err; - - org = (struct PFwdPrivate *)p; - pr = snew(struct PFwdPrivate); - pr->buffer = NULL; - pr->fn = &fn_table; - - pr->c = NULL; - pr->backhandle = org->backhandle; - - pr->s = s = sk_register(sock, (Plug) pr); - if ((err = sk_socket_error(s)) != NULL) { - sfree(pr); - return err != NULL; - } - - sk_set_private_ptr(s, pr); - - pr->throttled = pr->throttle_override = 0; - pr->ready = 0; - - if (org->dynamic) { - pr->dynamic = 1; - pr->port = 0; /* "hostname" buffer is so far empty */ - sk_set_frozen(s, 0); /* we want to receive SOCKS _now_! */ - } else { - pr->dynamic = 0; - strcpy(pr->hostname, org->hostname); - pr->port = org->port; - pr->c = new_sock_channel(org->backhandle, s); - - if (pr->c == NULL) { - sfree(pr); - return 1; - } else { - /* asks to forward to the specified host/port for this */ - ssh_send_port_open(pr->c, pr->hostname, pr->port, "forwarding"); - } - } - - return 0; -} - - -/* Add a new forwarding from port -> desthost:destport - sets up a listener on the local machine on (srcaddr:)port - */ -const char *pfd_addforward(char *desthost, int destport, char *srcaddr, - int port, void *backhandle, const Config *cfg, - void **sockdata, int address_family) -{ - static const struct plug_function_table fn_table = { - pfd_log, - pfd_closing, - pfd_receive, /* should not happen... */ - pfd_sent, /* also should not happen */ - pfd_accepting - }; - - const char *err; - struct PFwdPrivate *pr; - Socket s; - - /* - * Open socket. - */ - pr = snew(struct PFwdPrivate); - pr->buffer = NULL; - pr->fn = &fn_table; - pr->c = NULL; - if (desthost) { - strcpy(pr->hostname, desthost); - pr->port = destport; - pr->dynamic = 0; - } else - pr->dynamic = 1; - pr->throttled = pr->throttle_override = 0; - pr->ready = 0; - pr->backhandle = backhandle; - - pr->s = s = new_listener(srcaddr, port, (Plug) pr, - !cfg->lport_acceptall, cfg, address_family); - if ((err = sk_socket_error(s)) != NULL) { - sfree(pr); - return err; - } - - sk_set_private_ptr(s, pr); - - *sockdata = (void *)s; - - return NULL; -} - -void pfd_close(Socket s) -{ - struct PFwdPrivate *pr; - - if (!s) - return; - - pr = (struct PFwdPrivate *) sk_get_private_ptr(s); - - sfree(pr->buffer); - sfree(pr); - - sk_close(s); -} - -/* - * Terminate a listener. - */ -void pfd_terminate(void *sv) -{ - pfd_close((Socket)sv); -} - -void pfd_unthrottle(Socket s) -{ - struct PFwdPrivate *pr; - if (!s) - return; - pr = (struct PFwdPrivate *) sk_get_private_ptr(s); - - pr->throttled = 0; - sk_set_frozen(s, pr->throttled || pr->throttle_override); -} - -void pfd_override_throttle(Socket s, int enable) -{ - struct PFwdPrivate *pr; - if (!s) - return; - pr = (struct PFwdPrivate *) sk_get_private_ptr(s); - - pr->throttle_override = enable; - sk_set_frozen(s, pr->throttled || pr->throttle_override); -} - -/* - * Called to send data down the raw connection. - */ -int pfd_send(Socket s, char *data, int len) -{ - if (s == NULL) - return 0; - return sk_write(s, data, len); -} - - -void pfd_confirm(Socket s) -{ - struct PFwdPrivate *pr; - - if (s == NULL) - return; - - pr = (struct PFwdPrivate *) sk_get_private_ptr(s); - pr->ready = 1; - sk_set_frozen(s, 0); - sk_write(s, NULL, 0); - if (pr->buffer) { - sshfwd_write(pr->c, pr->buffer, pr->buflen); - sfree(pr->buffer); - pr->buffer = NULL; - } -} diff --git a/tools/plink/proxy.c b/tools/plink/proxy.c deleted file mode 100644 index 1f4299951..000000000 --- a/tools/plink/proxy.c +++ /dev/null @@ -1,1478 +0,0 @@ -/* - * Network proxy abstraction in PuTTY - * - * A proxy layer, if necessary, wedges itself between the network - * code and the higher level backend. - */ - -#include -#include -#include - -#define DEFINE_PLUG_METHOD_MACROS -#include "putty.h" -#include "network.h" -#include "proxy.h" - -#define do_proxy_dns(cfg) \ - (cfg->proxy_dns == FORCE_ON || \ - (cfg->proxy_dns == AUTO && cfg->proxy_type != PROXY_SOCKS4)) - -/* - * Call this when proxy negotiation is complete, so that this - * socket can begin working normally. - */ -void proxy_activate (Proxy_Socket p) -{ - void *data; - int len; - long output_before, output_after; - - p->state = PROXY_STATE_ACTIVE; - - /* we want to ignore new receive events until we have sent - * all of our buffered receive data. - */ - sk_set_frozen(p->sub_socket, 1); - - /* how many bytes of output have we buffered? */ - output_before = bufchain_size(&p->pending_oob_output_data) + - bufchain_size(&p->pending_output_data); - /* and keep track of how many bytes do not get sent. */ - output_after = 0; - - /* send buffered OOB writes */ - while (bufchain_size(&p->pending_oob_output_data) > 0) { - bufchain_prefix(&p->pending_oob_output_data, &data, &len); - output_after += sk_write_oob(p->sub_socket, data, len); - bufchain_consume(&p->pending_oob_output_data, len); - } - - /* send buffered normal writes */ - while (bufchain_size(&p->pending_output_data) > 0) { - bufchain_prefix(&p->pending_output_data, &data, &len); - output_after += sk_write(p->sub_socket, data, len); - bufchain_consume(&p->pending_output_data, len); - } - - /* if we managed to send any data, let the higher levels know. */ - if (output_after < output_before) - plug_sent(p->plug, output_after); - - /* if we were asked to flush the output during - * the proxy negotiation process, do so now. - */ - if (p->pending_flush) sk_flush(p->sub_socket); - - /* if the backend wanted the socket unfrozen, try to unfreeze. - * our set_frozen handler will flush buffered receive data before - * unfreezing the actual underlying socket. - */ - if (!p->freeze) - sk_set_frozen((Socket)p, 0); -} - -/* basic proxy socket functions */ - -static Plug sk_proxy_plug (Socket s, Plug p) -{ - Proxy_Socket ps = (Proxy_Socket) s; - Plug ret = ps->plug; - if (p) - ps->plug = p; - return ret; -} - -static void sk_proxy_close (Socket s) -{ - Proxy_Socket ps = (Proxy_Socket) s; - - sk_close(ps->sub_socket); - sk_addr_free(ps->remote_addr); - sfree(ps); -} - -static int sk_proxy_write (Socket s, const char *data, int len) -{ - Proxy_Socket ps = (Proxy_Socket) s; - - if (ps->state != PROXY_STATE_ACTIVE) { - bufchain_add(&ps->pending_output_data, data, len); - return bufchain_size(&ps->pending_output_data); - } - return sk_write(ps->sub_socket, data, len); -} - -static int sk_proxy_write_oob (Socket s, const char *data, int len) -{ - Proxy_Socket ps = (Proxy_Socket) s; - - if (ps->state != PROXY_STATE_ACTIVE) { - bufchain_clear(&ps->pending_output_data); - bufchain_clear(&ps->pending_oob_output_data); - bufchain_add(&ps->pending_oob_output_data, data, len); - return len; - } - return sk_write_oob(ps->sub_socket, data, len); -} - -static void sk_proxy_flush (Socket s) -{ - Proxy_Socket ps = (Proxy_Socket) s; - - if (ps->state != PROXY_STATE_ACTIVE) { - ps->pending_flush = 1; - return; - } - sk_flush(ps->sub_socket); -} - -static void sk_proxy_set_private_ptr (Socket s, void *ptr) -{ - Proxy_Socket ps = (Proxy_Socket) s; - sk_set_private_ptr(ps->sub_socket, ptr); -} - -static void * sk_proxy_get_private_ptr (Socket s) -{ - Proxy_Socket ps = (Proxy_Socket) s; - return sk_get_private_ptr(ps->sub_socket); -} - -static void sk_proxy_set_frozen (Socket s, int is_frozen) -{ - Proxy_Socket ps = (Proxy_Socket) s; - - if (ps->state != PROXY_STATE_ACTIVE) { - ps->freeze = is_frozen; - return; - } - - /* handle any remaining buffered recv data first */ - if (bufchain_size(&ps->pending_input_data) > 0) { - ps->freeze = is_frozen; - - /* loop while we still have buffered data, and while we are - * unfrozen. the plug_receive call in the loop could result - * in a call back into this function refreezing the socket, - * so we have to check each time. - */ - while (!ps->freeze && bufchain_size(&ps->pending_input_data) > 0) { - void *data; - char databuf[512]; - int len; - bufchain_prefix(&ps->pending_input_data, &data, &len); - if (len > lenof(databuf)) - len = lenof(databuf); - memcpy(databuf, data, len); - bufchain_consume(&ps->pending_input_data, len); - plug_receive(ps->plug, 0, databuf, len); - } - - /* if we're still frozen, we'll have to wait for another - * call from the backend to finish unbuffering the data. - */ - if (ps->freeze) return; - } - - sk_set_frozen(ps->sub_socket, is_frozen); -} - -static const char * sk_proxy_socket_error (Socket s) -{ - Proxy_Socket ps = (Proxy_Socket) s; - if (ps->error != NULL || ps->sub_socket == NULL) { - return ps->error; - } - return sk_socket_error(ps->sub_socket); -} - -/* basic proxy plug functions */ - -static void plug_proxy_log(Plug plug, int type, SockAddr addr, int port, - const char *error_msg, int error_code) -{ - Proxy_Plug pp = (Proxy_Plug) plug; - Proxy_Socket ps = pp->proxy_socket; - - plug_log(ps->plug, type, addr, port, error_msg, error_code); -} - -static int plug_proxy_closing (Plug p, const char *error_msg, - int error_code, int calling_back) -{ - Proxy_Plug pp = (Proxy_Plug) p; - Proxy_Socket ps = pp->proxy_socket; - - if (ps->state != PROXY_STATE_ACTIVE) { - ps->closing_error_msg = error_msg; - ps->closing_error_code = error_code; - ps->closing_calling_back = calling_back; - return ps->negotiate(ps, PROXY_CHANGE_CLOSING); - } - return plug_closing(ps->plug, error_msg, - error_code, calling_back); -} - -static int plug_proxy_receive (Plug p, int urgent, char *data, int len) -{ - Proxy_Plug pp = (Proxy_Plug) p; - Proxy_Socket ps = pp->proxy_socket; - - if (ps->state != PROXY_STATE_ACTIVE) { - /* we will lose the urgentness of this data, but since most, - * if not all, of this data will be consumed by the negotiation - * process, hopefully it won't affect the protocol above us - */ - bufchain_add(&ps->pending_input_data, data, len); - ps->receive_urgent = urgent; - ps->receive_data = data; - ps->receive_len = len; - return ps->negotiate(ps, PROXY_CHANGE_RECEIVE); - } - return plug_receive(ps->plug, urgent, data, len); -} - -static void plug_proxy_sent (Plug p, int bufsize) -{ - Proxy_Plug pp = (Proxy_Plug) p; - Proxy_Socket ps = pp->proxy_socket; - - if (ps->state != PROXY_STATE_ACTIVE) { - ps->sent_bufsize = bufsize; - ps->negotiate(ps, PROXY_CHANGE_SENT); - return; - } - plug_sent(ps->plug, bufsize); -} - -static int plug_proxy_accepting (Plug p, OSSocket sock) -{ - Proxy_Plug pp = (Proxy_Plug) p; - Proxy_Socket ps = pp->proxy_socket; - - if (ps->state != PROXY_STATE_ACTIVE) { - ps->accepting_sock = sock; - return ps->negotiate(ps, PROXY_CHANGE_ACCEPTING); - } - return plug_accepting(ps->plug, sock); -} - -/* - * This function can accept a NULL pointer as `addr', in which case - * it will only check the host name. - */ -static int proxy_for_destination (SockAddr addr, char *hostname, int port, - const Config *cfg) -{ - int s = 0, e = 0; - char hostip[64]; - int hostip_len, hostname_len; - const char *exclude_list; - - /* - * Check the host name and IP against the hard-coded - * representations of `localhost'. - */ - if (!cfg->even_proxy_localhost && - (sk_hostname_is_local(hostname) || - (addr && sk_address_is_local(addr)))) - return 0; /* do not proxy */ - - /* we want a string representation of the IP address for comparisons */ - if (addr) { - sk_getaddr(addr, hostip, 64); - hostip_len = strlen(hostip); - } else - hostip_len = 0; /* placate gcc; shouldn't be required */ - - hostname_len = strlen(hostname); - - exclude_list = cfg->proxy_exclude_list; - - /* now parse the exclude list, and see if either our IP - * or hostname matches anything in it. - */ - - while (exclude_list[s]) { - while (exclude_list[s] && - (isspace((unsigned char)exclude_list[s]) || - exclude_list[s] == ',')) s++; - - if (!exclude_list[s]) break; - - e = s; - - while (exclude_list[e] && - (isalnum((unsigned char)exclude_list[e]) || - exclude_list[e] == '-' || - exclude_list[e] == '.' || - exclude_list[e] == '*')) e++; - - if (exclude_list[s] == '*') { - /* wildcard at beginning of entry */ - - if ((addr && strnicmp(hostip + hostip_len - (e - s - 1), - exclude_list + s + 1, e - s - 1) == 0) || - strnicmp(hostname + hostname_len - (e - s - 1), - exclude_list + s + 1, e - s - 1) == 0) - return 0; /* IP/hostname range excluded. do not use proxy. */ - - } else if (exclude_list[e-1] == '*') { - /* wildcard at end of entry */ - - if ((addr && strnicmp(hostip, exclude_list + s, e - s - 1) == 0) || - strnicmp(hostname, exclude_list + s, e - s - 1) == 0) - return 0; /* IP/hostname range excluded. do not use proxy. */ - - } else { - /* no wildcard at either end, so let's try an absolute - * match (ie. a specific IP) - */ - - if (addr && strnicmp(hostip, exclude_list + s, e - s) == 0) - return 0; /* IP/hostname excluded. do not use proxy. */ - if (strnicmp(hostname, exclude_list + s, e - s) == 0) - return 0; /* IP/hostname excluded. do not use proxy. */ - } - - s = e; - - /* Make sure we really have reached the next comma or end-of-string */ - while (exclude_list[s] && - !isspace((unsigned char)exclude_list[s]) && - exclude_list[s] != ',') s++; - } - - /* no matches in the exclude list, so use the proxy */ - return 1; -} - -SockAddr name_lookup(char *host, int port, char **canonicalname, - const Config *cfg, int addressfamily) -{ - if (cfg->proxy_type != PROXY_NONE && - do_proxy_dns(cfg) && - proxy_for_destination(NULL, host, port, cfg)) { - *canonicalname = dupstr(host); - return sk_nonamelookup(host); - } - - return sk_namelookup(host, canonicalname, addressfamily); -} - -Socket new_connection(SockAddr addr, char *hostname, - int port, int privport, - int oobinline, int nodelay, int keepalive, - Plug plug, const Config *cfg) -{ - static const struct socket_function_table socket_fn_table = { - sk_proxy_plug, - sk_proxy_close, - sk_proxy_write, - sk_proxy_write_oob, - sk_proxy_flush, - sk_proxy_set_private_ptr, - sk_proxy_get_private_ptr, - sk_proxy_set_frozen, - sk_proxy_socket_error - }; - - static const struct plug_function_table plug_fn_table = { - plug_proxy_log, - plug_proxy_closing, - plug_proxy_receive, - plug_proxy_sent, - plug_proxy_accepting - }; - - if (cfg->proxy_type != PROXY_NONE && - proxy_for_destination(addr, hostname, port, cfg)) - { - Proxy_Socket ret; - Proxy_Plug pplug; - SockAddr proxy_addr; - char *proxy_canonical_name; - Socket sret; - - if ((sret = platform_new_connection(addr, hostname, port, privport, - oobinline, nodelay, keepalive, - plug, cfg)) != - NULL) - return sret; - - ret = snew(struct Socket_proxy_tag); - ret->fn = &socket_fn_table; - ret->cfg = *cfg; /* STRUCTURE COPY */ - ret->plug = plug; - ret->remote_addr = addr; /* will need to be freed on close */ - ret->remote_port = port; - - ret->error = NULL; - ret->pending_flush = 0; - ret->freeze = 0; - - bufchain_init(&ret->pending_input_data); - bufchain_init(&ret->pending_output_data); - bufchain_init(&ret->pending_oob_output_data); - - ret->sub_socket = NULL; - ret->state = PROXY_STATE_NEW; - ret->negotiate = NULL; - - if (cfg->proxy_type == PROXY_HTTP) { - ret->negotiate = proxy_http_negotiate; - } else if (cfg->proxy_type == PROXY_SOCKS4) { - ret->negotiate = proxy_socks4_negotiate; - } else if (cfg->proxy_type == PROXY_SOCKS5) { - ret->negotiate = proxy_socks5_negotiate; - } else if (cfg->proxy_type == PROXY_TELNET) { - ret->negotiate = proxy_telnet_negotiate; - } else { - ret->error = "Proxy error: Unknown proxy method"; - return (Socket) ret; - } - - /* create the proxy plug to map calls from the actual - * socket into our proxy socket layer */ - pplug = snew(struct Plug_proxy_tag); - pplug->fn = &plug_fn_table; - pplug->proxy_socket = ret; - - /* look-up proxy */ - proxy_addr = sk_namelookup(cfg->proxy_host, - &proxy_canonical_name, cfg->addressfamily); - if (sk_addr_error(proxy_addr) != NULL) { - ret->error = "Proxy error: Unable to resolve proxy host name"; - return (Socket)ret; - } - sfree(proxy_canonical_name); - - /* create the actual socket we will be using, - * connected to our proxy server and port. - */ - ret->sub_socket = sk_new(proxy_addr, cfg->proxy_port, - privport, oobinline, - nodelay, keepalive, (Plug) pplug); - if (sk_socket_error(ret->sub_socket) != NULL) - return (Socket) ret; - - /* start the proxy negotiation process... */ - sk_set_frozen(ret->sub_socket, 0); - ret->negotiate(ret, PROXY_CHANGE_NEW); - - return (Socket) ret; - } - - /* no proxy, so just return the direct socket */ - return sk_new(addr, port, privport, oobinline, nodelay, keepalive, plug); -} - -Socket new_listener(char *srcaddr, int port, Plug plug, int local_host_only, - const Config *cfg, int addressfamily) -{ - /* TODO: SOCKS (and potentially others) support inbound - * TODO: connections via the proxy. support them. - */ - - return sk_newlistener(srcaddr, port, plug, local_host_only, addressfamily); -} - -/* ---------------------------------------------------------------------- - * HTTP CONNECT proxy type. - */ - -static int get_line_end (char * data, int len) -{ - int off = 0; - - while (off < len) - { - if (data[off] == '\n') { - /* we have a newline */ - off++; - - /* is that the only thing on this line? */ - if (off <= 2) return off; - - /* if not, then there is the possibility that this header - * continues onto the next line, if it starts with a space - * or a tab. - */ - - if (off + 1 < len && - data[off+1] != ' ' && - data[off+1] != '\t') return off; - - /* the line does continue, so we have to keep going - * until we see an the header's "real" end of line. - */ - off++; - } - - off++; - } - - return -1; -} - -int proxy_http_negotiate (Proxy_Socket p, int change) -{ - if (p->state == PROXY_STATE_NEW) { - /* we are just beginning the proxy negotiate process, - * so we'll send off the initial bits of the request. - * for this proxy method, it's just a simple HTTP - * request - */ - char *buf, dest[512]; - - sk_getaddr(p->remote_addr, dest, lenof(dest)); - - buf = dupprintf("CONNECT %s:%i HTTP/1.1\r\nHost: %s:%i\r\n", - dest, p->remote_port, dest, p->remote_port); - sk_write(p->sub_socket, buf, strlen(buf)); - sfree(buf); - - if (p->cfg.proxy_username[0] || p->cfg.proxy_password[0]) { - char buf[sizeof(p->cfg.proxy_username)+sizeof(p->cfg.proxy_password)]; - char buf2[sizeof(buf)*4/3 + 100]; - int i, j, len; - sprintf(buf, "%s:%s", p->cfg.proxy_username, p->cfg.proxy_password); - len = strlen(buf); - sprintf(buf2, "Proxy-Authorization: Basic "); - for (i = 0, j = strlen(buf2); i < len; i += 3, j += 4) - base64_encode_atom((unsigned char *)(buf+i), - (len-i > 3 ? 3 : len-i), buf2+j); - strcpy(buf2+j, "\r\n"); - sk_write(p->sub_socket, buf2, strlen(buf2)); - } - - sk_write(p->sub_socket, "\r\n", 2); - - p->state = 1; - return 0; - } - - if (change == PROXY_CHANGE_CLOSING) { - /* if our proxy negotiation process involves closing and opening - * new sockets, then we would want to intercept this closing - * callback when we were expecting it. if we aren't anticipating - * a socket close, then some error must have occurred. we'll - * just pass those errors up to the backend. - */ - return plug_closing(p->plug, p->closing_error_msg, - p->closing_error_code, - p->closing_calling_back); - } - - if (change == PROXY_CHANGE_SENT) { - /* some (or all) of what we wrote to the proxy was sent. - * we don't do anything new, however, until we receive the - * proxy's response. we might want to set a timer so we can - * timeout the proxy negotiation after a while... - */ - return 0; - } - - if (change == PROXY_CHANGE_ACCEPTING) { - /* we should _never_ see this, as we are using our socket to - * connect to a proxy, not accepting inbound connections. - * what should we do? close the socket with an appropriate - * error message? - */ - return plug_accepting(p->plug, p->accepting_sock); - } - - if (change == PROXY_CHANGE_RECEIVE) { - /* we have received data from the underlying socket, which - * we'll need to parse, process, and respond to appropriately. - */ - - char *data, *datap; - int len; - int eol; - - if (p->state == 1) { - - int min_ver, maj_ver, status; - - /* get the status line */ - len = bufchain_size(&p->pending_input_data); - assert(len > 0); /* or we wouldn't be here */ - data = snewn(len+1, char); - bufchain_fetch(&p->pending_input_data, data, len); - /* - * We must NUL-terminate this data, because Windows - * sscanf appears to require a NUL at the end of the - * string because it strlens it _first_. Sigh. - */ - data[len] = '\0'; - - eol = get_line_end(data, len); - if (eol < 0) { - sfree(data); - return 1; - } - - status = -1; - /* We can't rely on whether the %n incremented the sscanf return */ - if (sscanf((char *)data, "HTTP/%i.%i %n", - &maj_ver, &min_ver, &status) < 2 || status == -1) { - plug_closing(p->plug, "Proxy error: HTTP response was absent", - PROXY_ERROR_GENERAL, 0); - sfree(data); - return 1; - } - - /* remove the status line from the input buffer. */ - bufchain_consume(&p->pending_input_data, eol); - if (data[status] != '2') { - /* error */ - char *buf; - data[eol] = '\0'; - while (eol > status && - (data[eol-1] == '\r' || data[eol-1] == '\n')) - data[--eol] = '\0'; - buf = dupprintf("Proxy error: %s", data+status); - plug_closing(p->plug, buf, PROXY_ERROR_GENERAL, 0); - sfree(buf); - sfree(data); - return 1; - } - - sfree(data); - - p->state = 2; - } - - if (p->state == 2) { - - /* get headers. we're done when we get a - * header of length 2, (ie. just "\r\n") - */ - - len = bufchain_size(&p->pending_input_data); - assert(len > 0); /* or we wouldn't be here */ - data = snewn(len, char); - datap = data; - bufchain_fetch(&p->pending_input_data, data, len); - - eol = get_line_end(datap, len); - if (eol < 0) { - sfree(data); - return 1; - } - while (eol > 2) - { - bufchain_consume(&p->pending_input_data, eol); - datap += eol; - len -= eol; - eol = get_line_end(datap, len); - } - - if (eol == 2) { - /* we're done */ - bufchain_consume(&p->pending_input_data, 2); - proxy_activate(p); - /* proxy activate will have dealt with - * whatever is left of the buffer */ - sfree(data); - return 1; - } - - sfree(data); - return 1; - } - } - - plug_closing(p->plug, "Proxy error: unexpected proxy error", - PROXY_ERROR_UNEXPECTED, 0); - return 1; -} - -/* ---------------------------------------------------------------------- - * SOCKS proxy type. - */ - -/* SOCKS version 4 */ -int proxy_socks4_negotiate (Proxy_Socket p, int change) -{ - if (p->state == PROXY_CHANGE_NEW) { - - /* request format: - * version number (1 byte) = 4 - * command code (1 byte) - * 1 = CONNECT - * 2 = BIND - * dest. port (2 bytes) [network order] - * dest. address (4 bytes) - * user ID (variable length, null terminated string) - */ - - int length, type, namelen; - char *command, addr[4], hostname[512]; - - type = sk_addrtype(p->remote_addr); - if (type == ADDRTYPE_IPV6) { - plug_closing(p->plug, "Proxy error: SOCKS version 4 does" - " not support IPv6", PROXY_ERROR_GENERAL, 0); - return 1; - } else if (type == ADDRTYPE_IPV4) { - namelen = 0; - sk_addrcopy(p->remote_addr, addr); - } else { /* type == ADDRTYPE_NAME */ - assert(type == ADDRTYPE_NAME); - sk_getaddr(p->remote_addr, hostname, lenof(hostname)); - namelen = strlen(hostname) + 1; /* include the NUL */ - addr[0] = addr[1] = addr[2] = 0; - addr[3] = 1; - } - - length = strlen(p->cfg.proxy_username) + namelen + 9; - command = snewn(length, char); - strcpy(command + 8, p->cfg.proxy_username); - - command[0] = 4; /* version 4 */ - command[1] = 1; /* CONNECT command */ - - /* port */ - command[2] = (char) (p->remote_port >> 8) & 0xff; - command[3] = (char) p->remote_port & 0xff; - - /* address */ - memcpy(command + 4, addr, 4); - - /* hostname */ - memcpy(command + 8 + strlen(p->cfg.proxy_username) + 1, - hostname, namelen); - - sk_write(p->sub_socket, command, length); - sfree(command); - - p->state = 1; - return 0; - } - - if (change == PROXY_CHANGE_CLOSING) { - /* if our proxy negotiation process involves closing and opening - * new sockets, then we would want to intercept this closing - * callback when we were expecting it. if we aren't anticipating - * a socket close, then some error must have occurred. we'll - * just pass those errors up to the backend. - */ - return plug_closing(p->plug, p->closing_error_msg, - p->closing_error_code, - p->closing_calling_back); - } - - if (change == PROXY_CHANGE_SENT) { - /* some (or all) of what we wrote to the proxy was sent. - * we don't do anything new, however, until we receive the - * proxy's response. we might want to set a timer so we can - * timeout the proxy negotiation after a while... - */ - return 0; - } - - if (change == PROXY_CHANGE_ACCEPTING) { - /* we should _never_ see this, as we are using our socket to - * connect to a proxy, not accepting inbound connections. - * what should we do? close the socket with an appropriate - * error message? - */ - return plug_accepting(p->plug, p->accepting_sock); - } - - if (change == PROXY_CHANGE_RECEIVE) { - /* we have received data from the underlying socket, which - * we'll need to parse, process, and respond to appropriately. - */ - - if (p->state == 1) { - /* response format: - * version number (1 byte) = 4 - * reply code (1 byte) - * 90 = request granted - * 91 = request rejected or failed - * 92 = request rejected due to lack of IDENTD on client - * 93 = request rejected due to difference in user ID - * (what we sent vs. what IDENTD said) - * dest. port (2 bytes) - * dest. address (4 bytes) - */ - - char data[8]; - - if (bufchain_size(&p->pending_input_data) < 8) - return 1; /* not got anything yet */ - - /* get the response */ - bufchain_fetch(&p->pending_input_data, data, 8); - - if (data[0] != 0) { - plug_closing(p->plug, "Proxy error: SOCKS proxy responded with " - "unexpected reply code version", - PROXY_ERROR_GENERAL, 0); - return 1; - } - - if (data[1] != 90) { - - switch (data[1]) { - case 92: - plug_closing(p->plug, "Proxy error: SOCKS server wanted IDENTD on client", - PROXY_ERROR_GENERAL, 0); - break; - case 93: - plug_closing(p->plug, "Proxy error: Username and IDENTD on client don't agree", - PROXY_ERROR_GENERAL, 0); - break; - case 91: - default: - plug_closing(p->plug, "Proxy error: Error while communicating with proxy", - PROXY_ERROR_GENERAL, 0); - break; - } - - return 1; - } - bufchain_consume(&p->pending_input_data, 8); - - /* we're done */ - proxy_activate(p); - /* proxy activate will have dealt with - * whatever is left of the buffer */ - return 1; - } - } - - plug_closing(p->plug, "Proxy error: unexpected proxy error", - PROXY_ERROR_UNEXPECTED, 0); - return 1; -} - -/* SOCKS version 5 */ -int proxy_socks5_negotiate (Proxy_Socket p, int change) -{ - if (p->state == PROXY_CHANGE_NEW) { - - /* initial command: - * version number (1 byte) = 5 - * number of available authentication methods (1 byte) - * available authentication methods (1 byte * previous value) - * authentication methods: - * 0x00 = no authentication - * 0x01 = GSSAPI - * 0x02 = username/password - * 0x03 = CHAP - */ - - char command[5]; - int len; - - command[0] = 5; /* version 5 */ - if (p->cfg.proxy_username[0] || p->cfg.proxy_password[0]) { - command[2] = 0x00; /* no authentication */ - len = 3; - proxy_socks5_offerencryptedauth (command, &len); - command[len++] = 0x02; /* username/password */ - command[1] = len - 2; /* Number of methods supported */ - } else { - command[1] = 1; /* one methods supported: */ - command[2] = 0x00; /* no authentication */ - len = 3; - } - - sk_write(p->sub_socket, command, len); - - p->state = 1; - return 0; - } - - if (change == PROXY_CHANGE_CLOSING) { - /* if our proxy negotiation process involves closing and opening - * new sockets, then we would want to intercept this closing - * callback when we were expecting it. if we aren't anticipating - * a socket close, then some error must have occurred. we'll - * just pass those errors up to the backend. - */ - return plug_closing(p->plug, p->closing_error_msg, - p->closing_error_code, - p->closing_calling_back); - } - - if (change == PROXY_CHANGE_SENT) { - /* some (or all) of what we wrote to the proxy was sent. - * we don't do anything new, however, until we receive the - * proxy's response. we might want to set a timer so we can - * timeout the proxy negotiation after a while... - */ - return 0; - } - - if (change == PROXY_CHANGE_ACCEPTING) { - /* we should _never_ see this, as we are using our socket to - * connect to a proxy, not accepting inbound connections. - * what should we do? close the socket with an appropriate - * error message? - */ - return plug_accepting(p->plug, p->accepting_sock); - } - - if (change == PROXY_CHANGE_RECEIVE) { - /* we have received data from the underlying socket, which - * we'll need to parse, process, and respond to appropriately. - */ - - if (p->state == 1) { - - /* initial response: - * version number (1 byte) = 5 - * authentication method (1 byte) - * authentication methods: - * 0x00 = no authentication - * 0x01 = GSSAPI - * 0x02 = username/password - * 0x03 = CHAP - * 0xff = no acceptable methods - */ - char data[2]; - - if (bufchain_size(&p->pending_input_data) < 2) - return 1; /* not got anything yet */ - - /* get the response */ - bufchain_fetch(&p->pending_input_data, data, 2); - - if (data[0] != 5) { - plug_closing(p->plug, "Proxy error: SOCKS proxy returned unexpected version", - PROXY_ERROR_GENERAL, 0); - return 1; - } - - if (data[1] == 0x00) p->state = 2; /* no authentication needed */ - else if (data[1] == 0x01) p->state = 4; /* GSSAPI authentication */ - else if (data[1] == 0x02) p->state = 5; /* username/password authentication */ - else if (data[1] == 0x03) p->state = 6; /* CHAP authentication */ - else { - plug_closing(p->plug, "Proxy error: SOCKS proxy did not accept our authentication", - PROXY_ERROR_GENERAL, 0); - return 1; - } - bufchain_consume(&p->pending_input_data, 2); - } - - if (p->state == 7) { - - /* password authentication reply format: - * version number (1 bytes) = 1 - * reply code (1 byte) - * 0 = succeeded - * >0 = failed - */ - char data[2]; - - if (bufchain_size(&p->pending_input_data) < 2) - return 1; /* not got anything yet */ - - /* get the response */ - bufchain_fetch(&p->pending_input_data, data, 2); - - if (data[0] != 1) { - plug_closing(p->plug, "Proxy error: SOCKS password " - "subnegotiation contained wrong version number", - PROXY_ERROR_GENERAL, 0); - return 1; - } - - if (data[1] != 0) { - - plug_closing(p->plug, "Proxy error: SOCKS proxy refused" - " password authentication", - PROXY_ERROR_GENERAL, 0); - return 1; - } - - bufchain_consume(&p->pending_input_data, 2); - p->state = 2; /* now proceed as authenticated */ - } - - if (p->state == 8) { - int ret; - ret = proxy_socks5_handlechap(p); - if (ret) return ret; - } - - if (p->state == 2) { - - /* request format: - * version number (1 byte) = 5 - * command code (1 byte) - * 1 = CONNECT - * 2 = BIND - * 3 = UDP ASSOCIATE - * reserved (1 byte) = 0x00 - * address type (1 byte) - * 1 = IPv4 - * 3 = domainname (first byte has length, no terminating null) - * 4 = IPv6 - * dest. address (variable) - * dest. port (2 bytes) [network order] - */ - - char command[512]; - int len; - int type; - - type = sk_addrtype(p->remote_addr); - if (type == ADDRTYPE_IPV4) { - len = 10; /* 4 hdr + 4 addr + 2 trailer */ - command[3] = 1; /* IPv4 */ - sk_addrcopy(p->remote_addr, command+4); - } else if (type == ADDRTYPE_IPV6) { - len = 22; /* 4 hdr + 16 addr + 2 trailer */ - command[3] = 4; /* IPv6 */ - sk_addrcopy(p->remote_addr, command+4); - } else { - assert(type == ADDRTYPE_NAME); - command[3] = 3; - sk_getaddr(p->remote_addr, command+5, 256); - command[4] = strlen(command+5); - len = 7 + command[4]; /* 4 hdr, 1 len, N addr, 2 trailer */ - } - - command[0] = 5; /* version 5 */ - command[1] = 1; /* CONNECT command */ - command[2] = 0x00; - - /* port */ - command[len-2] = (char) (p->remote_port >> 8) & 0xff; - command[len-1] = (char) p->remote_port & 0xff; - - sk_write(p->sub_socket, command, len); - - p->state = 3; - return 1; - } - - if (p->state == 3) { - - /* reply format: - * version number (1 bytes) = 5 - * reply code (1 byte) - * 0 = succeeded - * 1 = general SOCKS server failure - * 2 = connection not allowed by ruleset - * 3 = network unreachable - * 4 = host unreachable - * 5 = connection refused - * 6 = TTL expired - * 7 = command not supported - * 8 = address type not supported - * reserved (1 byte) = x00 - * address type (1 byte) - * 1 = IPv4 - * 3 = domainname (first byte has length, no terminating null) - * 4 = IPv6 - * server bound address (variable) - * server bound port (2 bytes) [network order] - */ - char data[5]; - int len; - - /* First 5 bytes of packet are enough to tell its length. */ - if (bufchain_size(&p->pending_input_data) < 5) - return 1; /* not got anything yet */ - - /* get the response */ - bufchain_fetch(&p->pending_input_data, data, 5); - - if (data[0] != 5) { - plug_closing(p->plug, "Proxy error: SOCKS proxy returned wrong version number", - PROXY_ERROR_GENERAL, 0); - return 1; - } - - if (data[1] != 0) { - char buf[256]; - - strcpy(buf, "Proxy error: "); - - switch (data[1]) { - case 1: strcat(buf, "General SOCKS server failure"); break; - case 2: strcat(buf, "Connection not allowed by ruleset"); break; - case 3: strcat(buf, "Network unreachable"); break; - case 4: strcat(buf, "Host unreachable"); break; - case 5: strcat(buf, "Connection refused"); break; - case 6: strcat(buf, "TTL expired"); break; - case 7: strcat(buf, "Command not supported"); break; - case 8: strcat(buf, "Address type not supported"); break; - default: sprintf(buf+strlen(buf), - "Unrecognised SOCKS error code %d", - data[1]); - break; - } - plug_closing(p->plug, buf, PROXY_ERROR_GENERAL, 0); - - return 1; - } - - /* - * Eat the rest of the reply packet. - */ - len = 6; /* first 4 bytes, last 2 */ - switch (data[3]) { - case 1: len += 4; break; /* IPv4 address */ - case 4: len += 16; break;/* IPv6 address */ - case 3: len += (unsigned char)data[4]; break; /* domain name */ - default: - plug_closing(p->plug, "Proxy error: SOCKS proxy returned " - "unrecognised address format", - PROXY_ERROR_GENERAL, 0); - return 1; - } - if (bufchain_size(&p->pending_input_data) < len) - return 1; /* not got whole reply yet */ - bufchain_consume(&p->pending_input_data, len); - - /* we're done */ - proxy_activate(p); - return 1; - } - - if (p->state == 4) { - /* TODO: Handle GSSAPI authentication */ - plug_closing(p->plug, "Proxy error: We don't support GSSAPI authentication", - PROXY_ERROR_GENERAL, 0); - return 1; - } - - if (p->state == 5) { - if (p->cfg.proxy_username[0] || p->cfg.proxy_password[0]) { - char userpwbuf[514]; - int ulen, plen; - ulen = strlen(p->cfg.proxy_username); - if (ulen > 255) ulen = 255; if (ulen < 1) ulen = 1; - plen = strlen(p->cfg.proxy_password); - if (plen > 255) plen = 255; if (plen < 1) plen = 1; - userpwbuf[0] = 1; /* version number of subnegotiation */ - userpwbuf[1] = ulen; - memcpy(userpwbuf+2, p->cfg.proxy_username, ulen); - userpwbuf[ulen+2] = plen; - memcpy(userpwbuf+ulen+3, p->cfg.proxy_password, plen); - sk_write(p->sub_socket, userpwbuf, ulen + plen + 3); - p->state = 7; - } else - plug_closing(p->plug, "Proxy error: Server chose " - "username/password authentication but we " - "didn't offer it!", - PROXY_ERROR_GENERAL, 0); - return 1; - } - - if (p->state == 6) { - int ret; - ret = proxy_socks5_selectchap(p); - if (ret) return ret; - } - - } - - plug_closing(p->plug, "Proxy error: Unexpected proxy error", - PROXY_ERROR_UNEXPECTED, 0); - return 1; -} - -/* ---------------------------------------------------------------------- - * `Telnet' proxy type. - * - * (This is for ad-hoc proxies where you connect to the proxy's - * telnet port and send a command such as `connect host port'. The - * command is configurable, since this proxy type is typically not - * standardised or at all well-defined.) - */ - -char *format_telnet_command(SockAddr addr, int port, const Config *cfg) -{ - char *ret = NULL; - int retlen = 0, retsize = 0; - int so = 0, eo = 0; -#define ENSURE(n) do { \ - if (retsize < retlen + n) { \ - retsize = retlen + n + 512; \ - ret = sresize(ret, retsize, char); \ - } \ -} while (0) - - /* we need to escape \\, \%, \r, \n, \t, \x??, \0???, - * %%, %host, %port, %user, and %pass - */ - - while (cfg->proxy_telnet_command[eo] != 0) { - - /* scan forward until we hit end-of-line, - * or an escape character (\ or %) */ - while (cfg->proxy_telnet_command[eo] != 0 && - cfg->proxy_telnet_command[eo] != '%' && - cfg->proxy_telnet_command[eo] != '\\') eo++; - - /* if we hit eol, break out of our escaping loop */ - if (cfg->proxy_telnet_command[eo] == 0) break; - - /* if there was any unescaped text before the escape - * character, send that now */ - if (eo != so) { - ENSURE(eo - so); - memcpy(ret + retlen, cfg->proxy_telnet_command + so, eo - so); - retlen += eo - so; - } - - so = eo++; - - /* if the escape character was the last character of - * the line, we'll just stop and send it. */ - if (cfg->proxy_telnet_command[eo] == 0) break; - - if (cfg->proxy_telnet_command[so] == '\\') { - - /* we recognize \\, \%, \r, \n, \t, \x??. - * anything else, we just send unescaped (including the \). - */ - - switch (cfg->proxy_telnet_command[eo]) { - - case '\\': - ENSURE(1); - ret[retlen++] = '\\'; - eo++; - break; - - case '%': - ENSURE(1); - ret[retlen++] = '%'; - eo++; - break; - - case 'r': - ENSURE(1); - ret[retlen++] = '\r'; - eo++; - break; - - case 'n': - ENSURE(1); - ret[retlen++] = '\n'; - eo++; - break; - - case 't': - ENSURE(1); - ret[retlen++] = '\t'; - eo++; - break; - - case 'x': - case 'X': - { - /* escaped hexadecimal value (ie. \xff) */ - unsigned char v = 0; - int i = 0; - - for (;;) { - eo++; - if (cfg->proxy_telnet_command[eo] >= '0' && - cfg->proxy_telnet_command[eo] <= '9') - v += cfg->proxy_telnet_command[eo] - '0'; - else if (cfg->proxy_telnet_command[eo] >= 'a' && - cfg->proxy_telnet_command[eo] <= 'f') - v += cfg->proxy_telnet_command[eo] - 'a' + 10; - else if (cfg->proxy_telnet_command[eo] >= 'A' && - cfg->proxy_telnet_command[eo] <= 'F') - v += cfg->proxy_telnet_command[eo] - 'A' + 10; - else { - /* non hex character, so we abort and just - * send the whole thing unescaped (including \x) - */ - ENSURE(1); - ret[retlen++] = '\\'; - eo = so + 1; - break; - } - - /* we only extract two hex characters */ - if (i == 1) { - ENSURE(1); - ret[retlen++] = v; - eo++; - break; - } - - i++; - v <<= 4; - } - } - break; - - default: - ENSURE(2); - memcpy(ret+retlen, cfg->proxy_telnet_command + so, 2); - retlen += 2; - eo++; - break; - } - } else { - - /* % escape. we recognize %%, %host, %port, %user, %pass. - * %proxyhost, %proxyport. Anything else we just send - * unescaped (including the %). - */ - - if (cfg->proxy_telnet_command[eo] == '%') { - ENSURE(1); - ret[retlen++] = '%'; - eo++; - } - else if (strnicmp(cfg->proxy_telnet_command + eo, - "host", 4) == 0) { - char dest[512]; - int destlen; - sk_getaddr(addr, dest, lenof(dest)); - destlen = strlen(dest); - ENSURE(destlen); - memcpy(ret+retlen, dest, destlen); - retlen += destlen; - eo += 4; - } - else if (strnicmp(cfg->proxy_telnet_command + eo, - "port", 4) == 0) { - char portstr[8], portlen; - portlen = sprintf(portstr, "%i", port); - ENSURE(portlen); - memcpy(ret + retlen, portstr, portlen); - retlen += portlen; - eo += 4; - } - else if (strnicmp(cfg->proxy_telnet_command + eo, - "user", 4) == 0) { - int userlen = strlen(cfg->proxy_username); - ENSURE(userlen); - memcpy(ret+retlen, cfg->proxy_username, userlen); - retlen += userlen; - eo += 4; - } - else if (strnicmp(cfg->proxy_telnet_command + eo, - "pass", 4) == 0) { - int passlen = strlen(cfg->proxy_password); - ENSURE(passlen); - memcpy(ret+retlen, cfg->proxy_password, passlen); - retlen += passlen; - eo += 4; - } - else if (strnicmp(cfg->proxy_telnet_command + eo, - "proxyhost", 9) == 0) { - int phlen = strlen(cfg->proxy_host); - ENSURE(phlen); - memcpy(ret+retlen, cfg->proxy_host, phlen); - retlen += phlen; - eo += 9; - } - else if (strnicmp(cfg->proxy_telnet_command + eo, - "proxyport", 9) == 0) { - char pport[50]; - int pplen; - sprintf(pport, "%d", cfg->proxy_port); - pplen = strlen(pport); - ENSURE(pplen); - memcpy(ret+retlen, pport, pplen); - retlen += pplen; - eo += 9; - } - else { - /* we don't escape this, so send the % now, and - * don't advance eo, so that we'll consider the - * text immediately following the % as unescaped. - */ - ENSURE(1); - ret[retlen++] = '%'; - } - } - - /* resume scanning for additional escapes after this one. */ - so = eo; - } - - /* if there is any unescaped text at the end of the line, send it */ - if (eo != so) { - ENSURE(eo - so); - memcpy(ret + retlen, cfg->proxy_telnet_command + so, eo - so); - retlen += eo - so; - } - - ENSURE(1); - ret[retlen] = '\0'; - return ret; - -#undef ENSURE -} - -int proxy_telnet_negotiate (Proxy_Socket p, int change) -{ - if (p->state == PROXY_CHANGE_NEW) { - char *formatted_cmd; - - formatted_cmd = format_telnet_command(p->remote_addr, p->remote_port, - &p->cfg); - - sk_write(p->sub_socket, formatted_cmd, strlen(formatted_cmd)); - sfree(formatted_cmd); - - p->state = 1; - return 0; - } - - if (change == PROXY_CHANGE_CLOSING) { - /* if our proxy negotiation process involves closing and opening - * new sockets, then we would want to intercept this closing - * callback when we were expecting it. if we aren't anticipating - * a socket close, then some error must have occurred. we'll - * just pass those errors up to the backend. - */ - return plug_closing(p->plug, p->closing_error_msg, - p->closing_error_code, - p->closing_calling_back); - } - - if (change == PROXY_CHANGE_SENT) { - /* some (or all) of what we wrote to the proxy was sent. - * we don't do anything new, however, until we receive the - * proxy's response. we might want to set a timer so we can - * timeout the proxy negotiation after a while... - */ - return 0; - } - - if (change == PROXY_CHANGE_ACCEPTING) { - /* we should _never_ see this, as we are using our socket to - * connect to a proxy, not accepting inbound connections. - * what should we do? close the socket with an appropriate - * error message? - */ - return plug_accepting(p->plug, p->accepting_sock); - } - - if (change == PROXY_CHANGE_RECEIVE) { - /* we have received data from the underlying socket, which - * we'll need to parse, process, and respond to appropriately. - */ - - /* we're done */ - proxy_activate(p); - /* proxy activate will have dealt with - * whatever is left of the buffer */ - return 1; - } - - plug_closing(p->plug, "Proxy error: Unexpected proxy error", - PROXY_ERROR_UNEXPECTED, 0); - return 1; -} diff --git a/tools/plink/proxy.h b/tools/plink/proxy.h deleted file mode 100644 index 683b2603d..000000000 --- a/tools/plink/proxy.h +++ /dev/null @@ -1,123 +0,0 @@ -/* - * Network proxy abstraction in PuTTY - * - * A proxy layer, if necessary, wedges itself between the - * network code and the higher level backend. - * - * Supported proxies: HTTP CONNECT, generic telnet, SOCKS 4 & 5 - */ - -#ifndef PUTTY_PROXY_H -#define PUTTY_PROXY_H - -#define PROXY_ERROR_GENERAL 8000 -#define PROXY_ERROR_UNEXPECTED 8001 - -typedef struct Socket_proxy_tag * Proxy_Socket; - -struct Socket_proxy_tag { - const struct socket_function_table *fn; - /* the above variable absolutely *must* be the first in this structure */ - - char * error; - - Socket sub_socket; - Plug plug; - SockAddr remote_addr; - int remote_port; - - bufchain pending_output_data; - bufchain pending_oob_output_data; - int pending_flush; - bufchain pending_input_data; - -#define PROXY_STATE_NEW -1 -#define PROXY_STATE_ACTIVE 0 - - int state; /* proxy states greater than 0 are implementation - * dependent, but represent various stages/states - * of the initialization/setup/negotiation with the - * proxy server. - */ - int freeze; /* should we freeze the underlying socket when - * we are done with the proxy negotiation? this - * simply caches the value of sk_set_frozen calls. - */ - -#define PROXY_CHANGE_NEW -1 -#define PROXY_CHANGE_CLOSING 0 -#define PROXY_CHANGE_SENT 1 -#define PROXY_CHANGE_RECEIVE 2 -#define PROXY_CHANGE_ACCEPTING 3 - - /* something has changed (a call from the sub socket - * layer into our Proxy Plug layer, or we were just - * created, etc), so the proxy layer needs to handle - * this change (the type of which is the second argument) - * and further the proxy negotiation process. - */ - - int (*negotiate) (Proxy_Socket /* this */, int /* change type */); - - /* current arguments of plug handlers - * (for use by proxy's negotiate function) - */ - - /* closing */ - const char *closing_error_msg; - int closing_error_code; - int closing_calling_back; - - /* receive */ - int receive_urgent; - char *receive_data; - int receive_len; - - /* sent */ - int sent_bufsize; - - /* accepting */ - OSSocket accepting_sock; - - /* configuration, used to look up proxy settings */ - Config cfg; - - /* CHAP transient data */ - int chap_num_attributes; - int chap_num_attributes_processed; - int chap_current_attribute; - int chap_current_datalen; -}; - -typedef struct Plug_proxy_tag * Proxy_Plug; - -struct Plug_proxy_tag { - const struct plug_function_table *fn; - /* the above variable absolutely *must* be the first in this structure */ - - Proxy_Socket proxy_socket; - -}; - -extern void proxy_activate (Proxy_Socket); - -extern int proxy_http_negotiate (Proxy_Socket, int); -extern int proxy_telnet_negotiate (Proxy_Socket, int); -extern int proxy_socks4_negotiate (Proxy_Socket, int); -extern int proxy_socks5_negotiate (Proxy_Socket, int); - -/* - * This may be reused by local-command proxies on individual - * platforms. - */ -char *format_telnet_command(SockAddr addr, int port, const Config *cfg); - -/* - * These are implemented in cproxy.c or nocproxy.c, depending on - * whether encrypted proxy authentication is available. - */ -extern void proxy_socks5_offerencryptedauth(char *command, int *len); -extern int proxy_socks5_handlechap (Proxy_Socket p); -extern int proxy_socks5_selectchap(Proxy_Socket p); - -#endif diff --git a/tools/plink/putty.h b/tools/plink/putty.h deleted file mode 100644 index 1fff1e74f..000000000 --- a/tools/plink/putty.h +++ /dev/null @@ -1,1230 +0,0 @@ -#ifndef PUTTY_PUTTY_H -#define PUTTY_PUTTY_H - -#include /* for wchar_t */ - -/* - * Global variables. Most modules declare these `extern', but - * window.c will do `#define PUTTY_DO_GLOBALS' before including this - * module, and so will get them properly defined. - */ -#ifndef GLOBAL -#ifdef PUTTY_DO_GLOBALS -#define GLOBAL -#else -#define GLOBAL extern -#endif -#endif - -#ifndef DONE_TYPEDEFS -#define DONE_TYPEDEFS -typedef struct config_tag Config; -typedef struct backend_tag Backend; -typedef struct terminal_tag Terminal; -#endif - -#include "puttyps.h" -#include "network.h" -#include "misc.h" - -/* - * Fingerprints of the PGP master keys that can be used to establish a trust - * path between an executable and other files. - */ -#define PGP_RSA_MASTER_KEY_FP \ - "8F 15 97 DA 25 30 AB 0D 88 D1 92 54 11 CF 0C 4C" -#define PGP_DSA_MASTER_KEY_FP \ - "313C 3E76 4B74 C2C5 F2AE 83A8 4F5E 6DF5 6A93 B34E" - -/* Three attribute types: - * The ATTRs (normal attributes) are stored with the characters in - * the main display arrays - * - * The TATTRs (temporary attributes) are generated on the fly, they - * can overlap with characters but not with normal attributes. - * - * The LATTRs (line attributes) are an entirely disjoint space of - * flags. - * - * The DATTRs (display attributes) are internal to terminal.c (but - * defined here because their values have to match the others - * here); they reuse the TATTR_* space but are always masked off - * before sending to the front end. - * - * ATTR_INVALID is an illegal colour combination. - */ - -#define TATTR_ACTCURS 0x40000000UL /* active cursor (block) */ -#define TATTR_PASCURS 0x20000000UL /* passive cursor (box) */ -#define TATTR_RIGHTCURS 0x10000000UL /* cursor-on-RHS */ -#define TATTR_COMBINING 0x80000000UL /* combining characters */ - -#define DATTR_STARTRUN 0x80000000UL /* start of redraw run */ - -#define TDATTR_MASK 0xF0000000UL -#define TATTR_MASK (TDATTR_MASK) -#define DATTR_MASK (TDATTR_MASK) - -#define LATTR_NORM 0x00000000UL -#define LATTR_WIDE 0x00000001UL -#define LATTR_TOP 0x00000002UL -#define LATTR_BOT 0x00000003UL -#define LATTR_MODE 0x00000003UL -#define LATTR_WRAPPED 0x00000010UL /* this line wraps to next */ -#define LATTR_WRAPPED2 0x00000020UL /* with WRAPPED: CJK wide character - wrapped to next line, so last - single-width cell is empty */ - -#define ATTR_INVALID 0x03FFFFU - -/* Like Linux use the F000 page for direct to font. */ -#define CSET_OEMCP 0x0000F000UL /* OEM Codepage DTF */ -#define CSET_ACP 0x0000F100UL /* Ansi Codepage DTF */ - -/* These are internal use overlapping with the UTF-16 surrogates */ -#define CSET_ASCII 0x0000D800UL /* normal ASCII charset ESC ( B */ -#define CSET_LINEDRW 0x0000D900UL /* line drawing charset ESC ( 0 */ -#define CSET_SCOACS 0x0000DA00UL /* SCO Alternate charset */ -#define CSET_GBCHR 0x0000DB00UL /* UK variant charset ESC ( A */ -#define CSET_MASK 0xFFFFFF00UL /* Character set mask */ - -#define DIRECT_CHAR(c) ((c&0xFFFFFC00)==0xD800) -#define DIRECT_FONT(c) ((c&0xFFFFFE00)==0xF000) - -#define UCSERR (CSET_LINEDRW|'a') /* UCS Format error character. */ -/* - * UCSWIDE is a special value used in the terminal data to signify - * the character cell containing the right-hand half of a CJK wide - * character. We use 0xDFFF because it's part of the surrogate - * range and hence won't be used for anything else (it's impossible - * to input it via UTF-8 because our UTF-8 decoder correctly - * rejects surrogates). - */ -#define UCSWIDE 0xDFFF - -#define ATTR_NARROW 0x800000U -#define ATTR_WIDE 0x400000U -#define ATTR_BOLD 0x040000U -#define ATTR_UNDER 0x080000U -#define ATTR_REVERSE 0x100000U -#define ATTR_BLINK 0x200000U -#define ATTR_FGMASK 0x0001FFU -#define ATTR_BGMASK 0x03FE00U -#define ATTR_COLOURS 0x03FFFFU -#define ATTR_FGSHIFT 0 -#define ATTR_BGSHIFT 9 - -/* - * The definitive list of colour numbers stored in terminal - * attribute words is kept here. It is: - * - * - 0-7 are ANSI colours (KRGYBMCW). - * - 8-15 are the bold versions of those colours. - * - 16-255 are the remains of the xterm 256-colour mode (a - * 216-colour cube with R at most significant and B at least, - * followed by a uniform series of grey shades running between - * black and white but not including either on grounds of - * redundancy). - * - 256 is default foreground - * - 257 is default bold foreground - * - 258 is default background - * - 259 is default bold background - * - 260 is cursor foreground - * - 261 is cursor background - */ - -#define ATTR_DEFFG (256 << ATTR_FGSHIFT) -#define ATTR_DEFBG (258 << ATTR_BGSHIFT) -#define ATTR_DEFAULT (ATTR_DEFFG | ATTR_DEFBG) - -struct sesslist { - int nsessions; - char **sessions; - char *buffer; /* so memory can be freed later */ -}; - -struct unicode_data { - char **uni_tbl; - int dbcs_screenfont; - int font_codepage; - int line_codepage; - wchar_t unitab_scoacs[256]; - wchar_t unitab_line[256]; - wchar_t unitab_font[256]; - wchar_t unitab_xterm[256]; - wchar_t unitab_oemcp[256]; - unsigned char unitab_ctrl[256]; -}; - -#define LGXF_OVR 1 /* existing logfile overwrite */ -#define LGXF_APN 0 /* existing logfile append */ -#define LGXF_ASK -1 /* existing logfile ask */ -#define LGTYP_NONE 0 /* logmode: no logging */ -#define LGTYP_ASCII 1 /* logmode: pure ascii */ -#define LGTYP_DEBUG 2 /* logmode: all chars of traffic */ -#define LGTYP_PACKETS 3 /* logmode: SSH data packets */ -#define LGTYP_SSHRAW 4 /* logmode: SSH raw data */ - -typedef enum { - /* Actual special commands. Originally Telnet, but some codes have - * been re-used for similar specials in other protocols. */ - TS_AYT, TS_BRK, TS_SYNCH, TS_EC, TS_EL, TS_GA, TS_NOP, TS_ABORT, - TS_AO, TS_IP, TS_SUSP, TS_EOR, TS_EOF, TS_LECHO, TS_RECHO, TS_PING, - TS_EOL, - /* Special command for SSH. */ - TS_REKEY, - /* POSIX-style signals. (not Telnet) */ - TS_SIGABRT, TS_SIGALRM, TS_SIGFPE, TS_SIGHUP, TS_SIGILL, - TS_SIGINT, TS_SIGKILL, TS_SIGPIPE, TS_SIGQUIT, TS_SIGSEGV, - TS_SIGTERM, TS_SIGUSR1, TS_SIGUSR2, - /* Pseudo-specials used for constructing the specials menu. */ - TS_SEP, /* Separator */ - TS_SUBMENU, /* Start a new submenu with specified name */ - TS_EXITMENU /* Exit current submenu or end of specials */ -} Telnet_Special; - -struct telnet_special { - const char *name; - int code; -}; - -typedef enum { - MBT_NOTHING, - MBT_LEFT, MBT_MIDDLE, MBT_RIGHT, /* `raw' button designations */ - MBT_SELECT, MBT_EXTEND, MBT_PASTE, /* `cooked' button designations */ - MBT_WHEEL_UP, MBT_WHEEL_DOWN /* mouse wheel */ -} Mouse_Button; - -typedef enum { - MA_NOTHING, MA_CLICK, MA_2CLK, MA_3CLK, MA_DRAG, MA_RELEASE -} Mouse_Action; - -/* Keyboard modifiers -- keys the user is actually holding down */ - -#define PKM_SHIFT 0x01 -#define PKM_CONTROL 0x02 -#define PKM_META 0x04 -#define PKM_ALT 0x08 - -/* Keyboard flags that aren't really modifiers */ -#define PKF_CAPSLOCK 0x10 -#define PKF_NUMLOCK 0x20 -#define PKF_REPEAT 0x40 - -/* Stand-alone keysyms for function keys */ - -typedef enum { - PK_NULL, /* No symbol for this key */ - /* Main keypad keys */ - PK_ESCAPE, PK_TAB, PK_BACKSPACE, PK_RETURN, PK_COMPOSE, - /* Editing keys */ - PK_HOME, PK_INSERT, PK_DELETE, PK_END, PK_PAGEUP, PK_PAGEDOWN, - /* Cursor keys */ - PK_UP, PK_DOWN, PK_RIGHT, PK_LEFT, PK_REST, - /* Numeric keypad */ /* Real one looks like: */ - PK_PF1, PK_PF2, PK_PF3, PK_PF4, /* PF1 PF2 PF3 PF4 */ - PK_KPCOMMA, PK_KPMINUS, PK_KPDECIMAL, /* 7 8 9 - */ - PK_KP0, PK_KP1, PK_KP2, PK_KP3, PK_KP4, /* 4 5 6 , */ - PK_KP5, PK_KP6, PK_KP7, PK_KP8, PK_KP9, /* 1 2 3 en- */ - PK_KPBIGPLUS, PK_KPENTER, /* 0 . ter */ - /* Top row */ - PK_F1, PK_F2, PK_F3, PK_F4, PK_F5, - PK_F6, PK_F7, PK_F8, PK_F9, PK_F10, - PK_F11, PK_F12, PK_F13, PK_F14, PK_F15, - PK_F16, PK_F17, PK_F18, PK_F19, PK_F20, - PK_PAUSE -} Key_Sym; - -#define PK_ISEDITING(k) ((k) >= PK_HOME && (k) <= PK_PAGEDOWN) -#define PK_ISCURSOR(k) ((k) >= PK_UP && (k) <= PK_REST) -#define PK_ISKEYPAD(k) ((k) >= PK_PF1 && (k) <= PK_KPENTER) -#define PK_ISFKEY(k) ((k) >= PK_F1 && (k) <= PK_F20) - -enum { - VT_XWINDOWS, VT_OEMANSI, VT_OEMONLY, VT_POORMAN, VT_UNICODE -}; - -enum { - /* - * SSH-2 key exchange algorithms - */ - KEX_WARN, - KEX_DHGROUP1, - KEX_DHGROUP14, - KEX_DHGEX, - KEX_RSA, - KEX_MAX -}; - -enum { - /* - * SSH ciphers (both SSH-1 and SSH-2) - */ - CIPHER_WARN, /* pseudo 'cipher' */ - CIPHER_3DES, - CIPHER_BLOWFISH, - CIPHER_AES, /* (SSH-2 only) */ - CIPHER_DES, - CIPHER_ARCFOUR, - CIPHER_MAX /* no. ciphers (inc warn) */ -}; - -enum { - /* - * Several different bits of the PuTTY configuration seem to be - * three-way settings whose values are `always yes', `always - * no', and `decide by some more complex automated means'. This - * is true of line discipline options (local echo and line - * editing), proxy DNS, Close On Exit, and SSH server bug - * workarounds. Accordingly I supply a single enum here to deal - * with them all. - */ - FORCE_ON, FORCE_OFF, AUTO -}; - -enum { - /* - * Proxy types. - */ - PROXY_NONE, PROXY_SOCKS4, PROXY_SOCKS5, - PROXY_HTTP, PROXY_TELNET, PROXY_CMD -}; - -enum { - /* - * Line discipline options which the backend might try to control. - */ - LD_EDIT, /* local line editing */ - LD_ECHO /* local echo */ -}; - -enum { - /* Actions on remote window title query */ - TITLE_NONE, TITLE_EMPTY, TITLE_REAL -}; - -enum { - /* Protocol back ends. (cfg.protocol) */ - PROT_RAW, PROT_TELNET, PROT_RLOGIN, PROT_SSH, - /* PROT_SERIAL is supported on a subset of platforms, but it doesn't - * hurt to define it globally. */ - PROT_SERIAL -}; - -enum { - /* Bell settings (cfg.beep) */ - BELL_DISABLED, BELL_DEFAULT, BELL_VISUAL, BELL_WAVEFILE, BELL_PCSPEAKER -}; - -enum { - /* Taskbar flashing indication on bell (cfg.beep_ind) */ - B_IND_DISABLED, B_IND_FLASH, B_IND_STEADY -}; - -enum { - /* Resize actions (cfg.resize_action) */ - RESIZE_TERM, RESIZE_DISABLED, RESIZE_FONT, RESIZE_EITHER -}; - -enum { - /* Function key types (cfg.funky_type) */ - FUNKY_TILDE, - FUNKY_LINUX, - FUNKY_XTERM, - FUNKY_VT400, - FUNKY_VT100P, - FUNKY_SCO -}; - -enum { - FQ_DEFAULT, FQ_ANTIALIASED, FQ_NONANTIALIASED, FQ_CLEARTYPE -}; - -enum { - SER_PAR_NONE, SER_PAR_ODD, SER_PAR_EVEN, SER_PAR_MARK, SER_PAR_SPACE -}; - -enum { - SER_FLOW_NONE, SER_FLOW_XONXOFF, SER_FLOW_RTSCTS, SER_FLOW_DSRDTR -}; - -extern const char *const ttymodes[]; - -enum { - /* - * Network address types. Used for specifying choice of IPv4/v6 - * in config; also used in proxy.c to indicate whether a given - * host name has already been resolved or will be resolved at - * the proxy end. - */ - ADDRTYPE_UNSPEC, ADDRTYPE_IPV4, ADDRTYPE_IPV6, ADDRTYPE_NAME -}; - -struct backend_tag { - const char *(*init) (void *frontend_handle, void **backend_handle, - Config *cfg, - char *host, int port, char **realhost, int nodelay, - int keepalive); - void (*free) (void *handle); - /* back->reconfig() passes in a replacement configuration. */ - void (*reconfig) (void *handle, Config *cfg); - /* back->send() returns the current amount of buffered data. */ - int (*send) (void *handle, char *buf, int len); - /* back->sendbuffer() does the same thing but without attempting a send */ - int (*sendbuffer) (void *handle); - void (*size) (void *handle, int width, int height); - void (*special) (void *handle, Telnet_Special code); - const struct telnet_special *(*get_specials) (void *handle); - int (*connected) (void *handle); - int (*exitcode) (void *handle); - /* If back->sendok() returns FALSE, data sent to it from the frontend - * may be lost. */ - int (*sendok) (void *handle); - int (*ldisc) (void *handle, int); - void (*provide_ldisc) (void *handle, void *ldisc); - void (*provide_logctx) (void *handle, void *logctx); - /* - * back->unthrottle() tells the back end that the front end - * buffer is clearing. - */ - void (*unthrottle) (void *handle, int); - int (*cfg_info) (void *handle); - char *name; - int protocol; - int default_port; -}; - -extern Backend *backends[]; - -/* - * Suggested default protocol provided by the backend link module. - * The application is free to ignore this. - */ -extern const int be_default_protocol; - -/* - * Name of this particular application, for use in the config box - * and other pieces of text. - */ -extern const char *const appname; - -/* - * IMPORTANT POLICY POINT: everything in this structure which wants - * to be treated like an integer must be an actual, honest-to- - * goodness `int'. No enum-typed variables. This is because parts - * of the code will want to pass around `int *' pointers to them - * and we can't run the risk of porting to some system on which the - * enum comes out as a different size from int. - */ -struct config_tag { - /* Basic options */ - char host[512]; - int port; - int protocol; - int addressfamily; - int close_on_exit; - int warn_on_close; - int ping_interval; /* in seconds */ - int tcp_nodelay; - int tcp_keepalives; - char loghost[512]; /* logical host being contacted, for host key check */ - /* Proxy options */ - char proxy_exclude_list[512]; - int proxy_dns; - int even_proxy_localhost; - int proxy_type; - char proxy_host[512]; - int proxy_port; - char proxy_username[128]; - char proxy_password[128]; - char proxy_telnet_command[512]; - /* SSH options */ - char remote_cmd[512]; - char *remote_cmd_ptr; /* might point to a larger command - * but never for loading/saving */ - char *remote_cmd_ptr2; /* might point to a larger command - * but never for loading/saving */ - int nopty; - int compression; - int ssh_kexlist[KEX_MAX]; - int ssh_rekey_time; /* in minutes */ - char ssh_rekey_data[16]; - int tryagent; - int agentfwd; - int change_username; /* allow username switching in SSH-2 */ - int ssh_cipherlist[CIPHER_MAX]; - Filename keyfile; - int sshprot; /* use v1 or v2 when both available */ - int ssh2_des_cbc; /* "des-cbc" unrecommended SSH-2 cipher */ - int ssh_no_userauth; /* bypass "ssh-userauth" (SSH-2 only) */ - int try_tis_auth; - int try_ki_auth; - int try_gssapi_auth; /* attempt gssapi auth */ - int gssapifwd; /* forward tgt via gss */ - int ssh_subsys; /* run a subsystem rather than a command */ - int ssh_subsys2; /* fallback to go with remote_cmd_ptr2 */ - int ssh_no_shell; /* avoid running a shell */ - char ssh_nc_host[512]; /* host to connect to in `nc' mode */ - int ssh_nc_port; /* port to connect to in `nc' mode */ - /* Telnet options */ - char termtype[32]; - char termspeed[32]; - char ttymodes[768]; /* MODE\tVvalue\0MODE\tA\0\0 */ - char environmt[1024]; /* VAR\tvalue\0VAR\tvalue\0\0 */ - char username[100]; - int username_from_env; - char localusername[100]; - int rfc_environ; - int passive_telnet; - /* Serial port options */ - char serline[256]; - int serspeed; - int serdatabits, serstopbits; - int serparity; - int serflow; - /* Keyboard options */ - int bksp_is_delete; - int rxvt_homeend; - int funky_type; - int no_applic_c; /* totally disable app cursor keys */ - int no_applic_k; /* totally disable app keypad */ - int no_mouse_rep; /* totally disable mouse reporting */ - int no_remote_resize; /* disable remote resizing */ - int no_alt_screen; /* disable alternate screen */ - int no_remote_wintitle; /* disable remote retitling */ - int no_dbackspace; /* disable destructive backspace */ - int no_remote_charset; /* disable remote charset config */ - int remote_qtitle_action; /* remote win title query action */ - int app_cursor; - int app_keypad; - int nethack_keypad; - int telnet_keyboard; - int telnet_newline; - int alt_f4; /* is it special? */ - int alt_space; /* is it special? */ - int alt_only; /* is it special? */ - int localecho; - int localedit; - int alwaysontop; - int fullscreenonaltenter; - int scroll_on_key; - int scroll_on_disp; - int erase_to_scrollback; - int compose_key; - int ctrlaltkeys; - char wintitle[256]; /* initial window title */ - /* Terminal options */ - int savelines; - int dec_om; - int wrap_mode; - int lfhascr; - int cursor_type; /* 0=block 1=underline 2=vertical */ - int blink_cur; - int beep; - int beep_ind; - int bellovl; /* bell overload protection active? */ - int bellovl_n; /* number of bells to cause overload */ - int bellovl_t; /* time interval for overload (seconds) */ - int bellovl_s; /* period of silence to re-enable bell (s) */ - Filename bell_wavefile; - int scrollbar; - int scrollbar_in_fullscreen; - int resize_action; - int bce; - int blinktext; - int win_name_always; - int width, height; - FontSpec font; - int font_quality; - Filename logfilename; - int logtype; - int logxfovr; - int logflush; - int logomitpass; - int logomitdata; - int hide_mouseptr; - int sunken_edge; - int window_border; - char answerback[256]; - char printer[128]; - int arabicshaping; - int bidi; - /* Colour options */ - int ansi_colour; - int xterm_256_colour; - int system_colour; - int try_palette; - int bold_colour; - unsigned char colours[22][3]; - /* Selection options */ - int mouse_is_xterm; - int rect_select; - int rawcnp; - int rtf_paste; - int mouse_override; - short wordness[256]; - /* translations */ - int vtmode; - char line_codepage[128]; - int cjk_ambig_wide; - int utf8_override; - int xlat_capslockcyr; - /* X11 forwarding */ - int x11_forward; - char x11_display[128]; - int x11_auth; - Filename xauthfile; - /* port forwarding */ - int lport_acceptall; /* accept conns from hosts other than localhost */ - int rport_acceptall; /* same for remote forwarded ports (SSH-2 only) */ - /* - * The port forwarding string contains a number of - * NUL-terminated substrings, terminated in turn by an empty - * string (i.e. a second NUL immediately after the previous - * one). Each string can be of one of the following forms: - * - * [LR]localport\thost:port - * [LR]localaddr:localport\thost:port - * Dlocalport - * Dlocaladdr:localport - */ - char portfwd[1024]; - /* SSH bug compatibility modes */ - int sshbug_ignore1, sshbug_plainpw1, sshbug_rsa1, - sshbug_hmac2, sshbug_derivekey2, sshbug_rsapad2, - sshbug_pksessid2, sshbug_rekey2, sshbug_maxpkt2; - /* - * ssh_simple means that we promise never to open any channel other - * than the main one, which means it can safely use a very large - * window in SSH-2. - */ - int ssh_simple; - /* Options for pterm. Should split out into platform-dependent part. */ - int stamp_utmp; - int login_shell; - int scrollbar_on_left; - int shadowbold; - FontSpec boldfont; - FontSpec widefont; - FontSpec wideboldfont; - int shadowboldoffset; - int crhaslf; -}; - -/* - * Some global flags denoting the type of application. - * - * FLAG_VERBOSE is set when the user requests verbose details. - * - * FLAG_STDERR is set in command-line applications (which have a - * functioning stderr that it makes sense to write to) and not in - * GUI applications (which don't). - * - * FLAG_INTERACTIVE is set when a full interactive shell session is - * being run, _either_ because no remote command has been provided - * _or_ because the application is GUI and can't run non- - * interactively. - * - * These flags describe the type of _application_ - they wouldn't - * vary between individual sessions - and so it's OK to have this - * variable be GLOBAL. - * - * Note that additional flags may be defined in platform-specific - * headers. It's probably best if those ones start from 0x1000, to - * avoid collision. - */ -#define FLAG_VERBOSE 0x0001 -#define FLAG_STDERR 0x0002 -#define FLAG_INTERACTIVE 0x0004 -GLOBAL int flags; - -/* - * Likewise, these two variables are set up when the application - * initialises, and inform all default-settings accesses after - * that. - */ -GLOBAL int default_protocol; -GLOBAL int default_port; - -/* - * This is set TRUE by cmdline.c iff a session is loaded with "-load". - */ -GLOBAL int loaded_session; - -struct RSAKey; /* be a little careful of scope */ - -/* - * Mechanism for getting text strings such as usernames and passwords - * from the front-end. - * The fields are mostly modelled after SSH's keyboard-interactive auth. - * FIXME We should probably mandate a character set/encoding (probably UTF-8). - * - * Since many of the pieces of text involved may be chosen by the server, - * the caller must take care to ensure that the server can't spoof locally- - * generated prompts such as key passphrase prompts. Some ground rules: - * - If the front-end needs to truncate a string, it should lop off the - * end. - * - The front-end should filter out any dangerous characters and - * generally not trust the strings. (But \n is required to behave - * vaguely sensibly, at least in `instruction', and ideally in - * `prompt[]' too.) - */ -typedef struct { - char *prompt; - int echo; - char *result; /* allocated/freed by caller */ - size_t result_len; -} prompt_t; -typedef struct { - /* - * Indicates whether the information entered is to be used locally - * (for instance a key passphrase prompt), or is destined for the wire. - * This is a hint only; the front-end is at liberty not to use this - * information (so the caller should ensure that the supplied text is - * sufficient). - */ - int to_server; - char *name; /* Short description, perhaps for dialog box title */ - int name_reqd; /* Display of `name' required or optional? */ - char *instruction; /* Long description, maybe with embedded newlines */ - int instr_reqd; /* Display of `instruction' required or optional? */ - size_t n_prompts; /* May be zero (in which case display the foregoing, - * if any, and return success) */ - prompt_t **prompts; - void *frontend; - void *data; /* slot for housekeeping data, managed by - * get_userpass_input(); initially NULL */ -} prompts_t; -prompts_t *new_prompts(void *frontend); -void add_prompt(prompts_t *p, char *promptstr, int echo, size_t len); -/* Burn the evidence. (Assumes _all_ strings want free()ing.) */ -void free_prompts(prompts_t *p); - -/* - * Exports from the front end. - */ -void request_resize(void *frontend, int, int); -void do_text(Context, int, int, wchar_t *, int, unsigned long, int); -void do_cursor(Context, int, int, wchar_t *, int, unsigned long, int); -int char_width(Context ctx, int uc); -#ifdef OPTIMISE_SCROLL -void do_scroll(Context, int, int, int); -#endif -void set_title(void *frontend, char *); -void set_icon(void *frontend, char *); -void set_sbar(void *frontend, int, int, int); -Context get_ctx(void *frontend); -void free_ctx(Context); -void palette_set(void *frontend, int, int, int, int); -void palette_reset(void *frontend); -void write_aclip(void *frontend, char *, int, int); -void write_clip(void *frontend, wchar_t *, int *, int, int); -void get_clip(void *frontend, wchar_t **, int *); -void optimised_move(void *frontend, int, int, int); -void set_raw_mouse_mode(void *frontend, int); -void connection_fatal(void *frontend, char *, ...); -void fatalbox(char *, ...); -void modalfatalbox(char *, ...); -#ifdef macintosh -#pragma noreturn(fatalbox) -#pragma noreturn(modalfatalbox) -#endif -void do_beep(void *frontend, int); -void begin_session(void *frontend); -void sys_cursor(void *frontend, int x, int y); -void request_paste(void *frontend); -void frontend_keypress(void *frontend); -void ldisc_update(void *frontend, int echo, int edit); -/* It's the backend's responsibility to invoke this at the start of a - * connection, if necessary; it can also invoke it later if the set of - * special commands changes. It does not need to invoke it at session - * shutdown. */ -void update_specials_menu(void *frontend); -int from_backend(void *frontend, int is_stderr, const char *data, int len); -int from_backend_untrusted(void *frontend, const char *data, int len); -void notify_remote_exit(void *frontend); -/* Get a sensible value for a tty mode. NULL return = don't set. - * Otherwise, returned value should be freed by caller. */ -char *get_ttymode(void *frontend, const char *mode); -/* - * >0 = `got all results, carry on' - * 0 = `user cancelled' (FIXME distinguish "give up entirely" and "next auth"?) - * <0 = `please call back later with more in/inlen' - */ -int get_userpass_input(prompts_t *p, unsigned char *in, int inlen); -#define OPTIMISE_IS_SCROLL 1 - -void set_iconic(void *frontend, int iconic); -void move_window(void *frontend, int x, int y); -void set_zorder(void *frontend, int top); -void refresh_window(void *frontend); -void set_zoomed(void *frontend, int zoomed); -int is_iconic(void *frontend); -void get_window_pos(void *frontend, int *x, int *y); -void get_window_pixels(void *frontend, int *x, int *y); -char *get_window_title(void *frontend, int icon); -/* Hint from backend to frontend about time-consuming operations. - * Initial state is assumed to be BUSY_NOT. */ -enum { - BUSY_NOT, /* Not busy, all user interaction OK */ - BUSY_WAITING, /* Waiting for something; local event loops still running - so some local interaction (e.g. menus) OK, but network - stuff is suspended */ - BUSY_CPU /* Locally busy (e.g. crypto); user interaction suspended */ -}; -void set_busy_status(void *frontend, int status); - -void cleanup_exit(int); - -/* - * Exports from noise.c. - */ -void noise_get_heavy(void (*func) (void *, int)); -void noise_get_light(void (*func) (void *, int)); -void noise_regular(void); -void noise_ultralight(unsigned long data); -void random_save_seed(void); -void random_destroy_seed(void); - -/* - * Exports from settings.c. - */ -Backend *backend_from_name(const char *name); -Backend *backend_from_proto(int proto); -int get_remote_username(Config *cfg, char *user, size_t len); -char *save_settings(char *section, Config * cfg); -void save_open_settings(void *sesskey, Config *cfg); -void load_settings(char *section, Config * cfg); -void load_open_settings(void *sesskey, Config *cfg); -void get_sesslist(struct sesslist *, int allocate); -void do_defaults(char *, Config *); -void registry_cleanup(void); - -/* - * Functions used by settings.c to provide platform-specific - * default settings. - * - * (The integer one is expected to return `def' if it has no clear - * opinion of its own. This is because there's no integer value - * which I can reliably set aside to indicate `nil'. The string - * function is perfectly all right returning NULL, of course. The - * Filename and FontSpec functions are _not allowed_ to fail to - * return, since these defaults _must_ be per-platform.) - */ -char *platform_default_s(const char *name); -int platform_default_i(const char *name, int def); -Filename platform_default_filename(const char *name); -FontSpec platform_default_fontspec(const char *name); - -/* - * Exports from terminal.c. - */ - -Terminal *term_init(Config *, struct unicode_data *, void *); -void term_free(Terminal *); -void term_size(Terminal *, int, int, int); -void term_paint(Terminal *, Context, int, int, int, int, int); -void term_scroll(Terminal *, int, int); -void term_pwron(Terminal *, int); -void term_clrsb(Terminal *); -void term_mouse(Terminal *, Mouse_Button, Mouse_Button, Mouse_Action, - int,int,int,int,int); -void term_key(Terminal *, Key_Sym, wchar_t *, size_t, unsigned int, - unsigned int); -void term_deselect(Terminal *); -void term_update(Terminal *); -void term_invalidate(Terminal *); -void term_blink(Terminal *, int set_cursor); -void term_do_paste(Terminal *); -int term_paste_pending(Terminal *); -void term_paste(Terminal *); -void term_nopaste(Terminal *); -int term_ldisc(Terminal *, int option); -void term_copyall(Terminal *); -void term_reconfig(Terminal *, Config *); -void term_seen_key_event(Terminal *); -int term_data(Terminal *, int is_stderr, const char *data, int len); -int term_data_untrusted(Terminal *, const char *data, int len); -void term_provide_resize_fn(Terminal *term, - void (*resize_fn)(void *, int, int), - void *resize_ctx); -void term_provide_logctx(Terminal *term, void *logctx); -void term_set_focus(Terminal *term, int has_focus); -char *term_get_ttymode(Terminal *term, const char *mode); -int term_get_userpass_input(Terminal *term, prompts_t *p, - unsigned char *in, int inlen); - -/* - * Exports from logging.c. - */ -void *log_init(void *frontend, Config *cfg); -void log_free(void *logctx); -void log_reconfig(void *logctx, Config *cfg); -void logfopen(void *logctx); -void logfclose(void *logctx); -void logtraffic(void *logctx, unsigned char c, int logmode); -void logflush(void *logctx); -void log_eventlog(void *logctx, const char *string); -enum { PKT_INCOMING, PKT_OUTGOING }; -enum { PKTLOG_EMIT, PKTLOG_BLANK, PKTLOG_OMIT }; -struct logblank_t { - int offset; - int len; - int type; -}; -void log_packet(void *logctx, int direction, int type, - char *texttype, const void *data, int len, - int n_blanks, const struct logblank_t *blanks, - const unsigned long *sequence); - -/* - * Exports from testback.c - */ - -extern Backend null_backend; -extern Backend loop_backend; - -/* - * Exports from raw.c. - */ - -extern Backend raw_backend; - -/* - * Exports from rlogin.c. - */ - -extern Backend rlogin_backend; - -/* - * Exports from telnet.c. - */ - -extern Backend telnet_backend; - -/* - * Exports from ssh.c. - */ -extern Backend ssh_backend; - -/* - * Exports from ldisc.c. - */ -void *ldisc_create(Config *, Terminal *, Backend *, void *, void *); -void ldisc_free(void *); -void ldisc_send(void *handle, char *buf, int len, int interactive); - -/* - * Exports from ldiscucs.c. - */ -void lpage_send(void *, int codepage, char *buf, int len, int interactive); -void luni_send(void *, wchar_t * widebuf, int len, int interactive); - -/* - * Exports from sshrand.c. - */ - -void random_add_noise(void *noise, int length); -int random_byte(void); -void random_get_savedata(void **data, int *len); -extern int random_active; -/* The random number subsystem is activated if at least one other entity - * within the program expresses an interest in it. So each SSH session - * calls random_ref on startup and random_unref on shutdown. */ -void random_ref(void); -void random_unref(void); - -/* - * Exports from pinger.c. - */ -typedef struct pinger_tag *Pinger; -Pinger pinger_new(Config *cfg, Backend *back, void *backhandle); -void pinger_reconfig(Pinger, Config *oldcfg, Config *newcfg); -void pinger_free(Pinger); - -/* - * Exports from misc.c. - */ - -#include "misc.h" -int cfg_launchable(const Config *cfg); -char const *cfg_dest(const Config *cfg); - -/* - * Exports from sercfg.c. - */ -void ser_setup_config_box(struct controlbox *b, int midsession, - int parity_mask, int flow_mask); - -/* - * Exports from version.c. - */ -extern char ver[]; - -/* - * Exports from unicode.c. - */ -#ifndef CP_UTF8 -#define CP_UTF8 65001 -#endif -/* void init_ucs(void); -- this is now in platform-specific headers */ -int is_dbcs_leadbyte(int codepage, char byte); -int mb_to_wc(int codepage, int flags, char *mbstr, int mblen, - wchar_t *wcstr, int wclen); -int wc_to_mb(int codepage, int flags, wchar_t *wcstr, int wclen, - char *mbstr, int mblen, char *defchr, int *defused, - struct unicode_data *ucsdata); -wchar_t xlat_uskbd2cyrllic(int ch); -int check_compose(int first, int second); -int decode_codepage(char *cp_name); -const char *cp_enumerate (int index); -const char *cp_name(int codepage); -void get_unitab(int codepage, wchar_t * unitab, int ftype); - -/* - * Exports from wcwidth.c - */ -int mk_wcwidth(wchar_t ucs); -int mk_wcswidth(const wchar_t *pwcs, size_t n); -int mk_wcwidth_cjk(wchar_t ucs); -int mk_wcswidth_cjk(const wchar_t *pwcs, size_t n); - -/* - * Exports from mscrypto.c - */ -#ifdef MSCRYPTOAPI -int crypto_startup(); -void crypto_wrapup(); -#endif - -/* - * Exports from pageantc.c. - * - * agent_query returns 1 for here's-a-response, and 0 for query-in- - * progress. In the latter case there will be a call to `callback' - * at some future point, passing callback_ctx as the first - * parameter and the actual reply data as the second and third. - * - * The response may be a NULL pointer (in either of the synchronous - * or asynchronous cases), which indicates failure to receive a - * response. - */ -int agent_query(void *in, int inlen, void **out, int *outlen, - void (*callback)(void *, void *, int), void *callback_ctx); -int agent_exists(void); - -/* - * Exports from wildcard.c - */ -const char *wc_error(int value); -int wc_match(const char *wildcard, const char *target); -int wc_unescape(char *output, const char *wildcard); - -/* - * Exports from frontend (windlg.c etc) - */ -void logevent(void *frontend, const char *); -void pgp_fingerprints(void); -/* - * verify_ssh_host_key() can return one of three values: - * - * - +1 means `key was OK' (either already known or the user just - * approved it) `so continue with the connection' - * - * - 0 means `key was not OK, abandon the connection' - * - * - -1 means `I've initiated enquiries, please wait to be called - * back via the provided function with a result that's either 0 - * or +1'. - */ -int verify_ssh_host_key(void *frontend, char *host, int port, char *keytype, - char *keystr, char *fingerprint, - void (*callback)(void *ctx, int result), void *ctx); -/* - * askalg has the same set of return values as verify_ssh_host_key. - */ -int askalg(void *frontend, const char *algtype, const char *algname, - void (*callback)(void *ctx, int result), void *ctx); -/* - * askappend can return four values: - * - * - 2 means overwrite the log file - * - 1 means append to the log file - * - 0 means cancel logging for this session - * - -1 means please wait. - */ -int askappend(void *frontend, Filename filename, - void (*callback)(void *ctx, int result), void *ctx); - -/* - * Exports from console frontends (wincons.c, uxcons.c) - * that aren't equivalents to things in windlg.c et al. - */ -extern int console_batch_mode; -int console_get_userpass_input(prompts_t *p, unsigned char *in, int inlen); -void console_provide_logctx(void *logctx); -int is_interactive(void); - -/* - * Exports from printing.c. - */ -typedef struct printer_enum_tag printer_enum; -typedef struct printer_job_tag printer_job; -printer_enum *printer_start_enum(int *nprinters); -char *printer_get_name(printer_enum *, int); -void printer_finish_enum(printer_enum *); -printer_job *printer_start_job(char *printer); -void printer_job_data(printer_job *, void *, int); -void printer_finish_job(printer_job *); - -/* - * Exports from cmdline.c (and also cmdline_error(), which is - * defined differently in various places and required _by_ - * cmdline.c). - */ -int cmdline_process_param(char *, char *, int, Config *); -void cmdline_run_saved(Config *); -void cmdline_cleanup(void); -int cmdline_get_passwd_input(prompts_t *p, unsigned char *in, int inlen); -#define TOOLTYPE_FILETRANSFER 1 -#define TOOLTYPE_NONNETWORK 2 -extern int cmdline_tooltype; - -void cmdline_error(char *, ...); - -/* - * Exports from config.c. - */ -struct controlbox; -void setup_config_box(struct controlbox *b, int midsession, - int protocol, int protcfginfo); - -/* - * Exports from minibidi.c. - */ -typedef struct bidi_char { - wchar_t origwc, wc; - unsigned short index; -} bidi_char; -int do_bidi(bidi_char *line, int count); -int do_shape(bidi_char *line, bidi_char *to, int count); -int is_rtl(int c); - -/* - * X11 auth mechanisms we know about. - */ -enum { - X11_NO_AUTH, - X11_MIT, /* MIT-MAGIC-COOKIE-1 */ - X11_XDM, /* XDM-AUTHORIZATION-1 */ - X11_NAUTHS -}; -extern const char *const x11_authnames[]; /* declared in x11fwd.c */ - -/* - * Miscellaneous exports from the platform-specific code. - */ -Filename filename_from_str(const char *string); -const char *filename_to_str(const Filename *fn); -int filename_equal(Filename f1, Filename f2); -int filename_is_null(Filename fn); -char *get_username(void); /* return value needs freeing */ -char *get_random_data(int bytes); /* used in cmdgen.c */ - -/* - * Exports and imports from timing.c. - * - * schedule_timer() asks the front end to schedule a callback to a - * timer function in a given number of ticks. The returned value is - * the time (in ticks since an arbitrary offset) at which the - * callback can be expected. This value will also be passed as the - * `now' parameter to the callback function. Hence, you can (for - * example) schedule an event at a particular time by calling - * schedule_timer() and storing the return value in your context - * structure as the time when that event is due. The first time a - * callback function gives you that value or more as `now', you do - * the thing. - * - * expire_timer_context() drops all current timers associated with - * a given value of ctx (for when you're about to free ctx). - * - * run_timers() is called from the front end when it has reason to - * think some timers have reached their moment, or when it simply - * needs to know how long to wait next. We pass it the time we - * think it is. It returns TRUE and places the time when the next - * timer needs to go off in `next', or alternatively it returns - * FALSE if there are no timers at all pending. - * - * timer_change_notify() must be supplied by the front end; it - * notifies the front end that a new timer has been added to the - * list which is sooner than any existing ones. It provides the - * time when that timer needs to go off. - * - * *** FRONT END IMPLEMENTORS NOTE: - * - * There's an important subtlety in the front-end implementation of - * the timer interface. When a front end is given a `next' value, - * either returned from run_timers() or via timer_change_notify(), - * it should ensure that it really passes _that value_ as the `now' - * parameter to its next run_timers call. It should _not_ simply - * call GETTICKCOUNT() to get the `now' parameter when invoking - * run_timers(). - * - * The reason for this is that an OS's system clock might not agree - * exactly with the timing mechanisms it supplies to wait for a - * given interval. I'll illustrate this by the simple example of - * Unix Plink, which uses timeouts to select() in a way which for - * these purposes can simply be considered to be a wait() function. - * Suppose, for the sake of argument, that this wait() function - * tends to return early by 1%. Then a possible sequence of actions - * is: - * - * - run_timers() tells the front end that the next timer firing - * is 10000ms from now. - * - Front end calls wait(10000ms), but according to - * GETTICKCOUNT() it has only waited for 9900ms. - * - Front end calls run_timers() again, passing time T-100ms as - * `now'. - * - run_timers() does nothing, and says the next timer firing is - * still 100ms from now. - * - Front end calls wait(100ms), which only waits for 99ms. - * - Front end calls run_timers() yet again, passing time T-1ms. - * - run_timers() says there's still 1ms to wait. - * - Front end calls wait(1ms). - * - * If you're _lucky_ at this point, wait(1ms) will actually wait - * for 1ms and you'll only have woken the program up three times. - * If you're unlucky, wait(1ms) might do nothing at all due to - * being below some minimum threshold, and you might find your - * program spends the whole of the last millisecond tight-looping - * between wait() and run_timers(). - * - * Instead, what you should do is to _save_ the precise `next' - * value provided by run_timers() or via timer_change_notify(), and - * use that precise value as the input to the next run_timers() - * call. So: - * - * - run_timers() tells the front end that the next timer firing - * is at time T, 10000ms from now. - * - Front end calls wait(10000ms). - * - Front end then immediately calls run_timers() and passes it - * time T, without stopping to check GETTICKCOUNT() at all. - * - * This guarantees that the program wakes up only as many times as - * there are actual timer actions to be taken, and that the timing - * mechanism will never send it into a tight loop. - * - * (It does also mean that the timer action in the above example - * will occur 100ms early, but this is not generally critical. And - * the hypothetical 1% error in wait() will be partially corrected - * for anyway when, _after_ run_timers() returns, you call - * GETTICKCOUNT() and compare the result with the returned `next' - * value to find out how long you have to make your next wait().) - */ -typedef void (*timer_fn_t)(void *ctx, long now); -long schedule_timer(int ticks, timer_fn_t fn, void *ctx); -void expire_timer_context(void *ctx); -int run_timers(long now, long *next); -void timer_change_notify(long next); - -#endif diff --git a/tools/plink/puttymem.h b/tools/plink/puttymem.h deleted file mode 100644 index d478f7949..000000000 --- a/tools/plink/puttymem.h +++ /dev/null @@ -1,42 +0,0 @@ -/* - * PuTTY memory-handling header. - */ - -#ifndef PUTTY_PUTTYMEM_H -#define PUTTY_PUTTYMEM_H - -#include /* for size_t */ -#include /* for memcpy() */ - - -/* #define MALLOC_LOG do this if you suspect putty of leaking memory */ -#ifdef MALLOC_LOG -#define smalloc(z) (mlog(__FILE__,__LINE__), safemalloc(z,1)) -#define snmalloc(z,s) (mlog(__FILE__,__LINE__), safemalloc(z,s)) -#define srealloc(y,z) (mlog(__FILE__,__LINE__), saferealloc(y,z,1)) -#define snrealloc(y,z,s) (mlog(__FILE__,__LINE__), saferealloc(y,z,s)) -#define sfree(z) (mlog(__FILE__,__LINE__), safefree(z)) -void mlog(char *, int); -#else -#define smalloc(z) safemalloc(z,1) -#define snmalloc safemalloc -#define srealloc(y,z) saferealloc(y,z,1) -#define snrealloc saferealloc -#define sfree safefree -#endif - -void *safemalloc(size_t, size_t); -void *saferealloc(void *, size_t, size_t); -void safefree(void *); - -/* - * Direct use of smalloc within the code should be avoided where - * possible, in favour of these type-casting macros which ensure - * you don't mistakenly allocate enough space for one sort of - * structure and assign it to a different sort of pointer. - */ -#define snew(type) ((type *)snmalloc(1, sizeof(type))) -#define snewn(n, type) ((type *)snmalloc((n), sizeof(type))) -#define sresize(ptr, n, type) ((type *)snrealloc((ptr), (n), sizeof(type))) - -#endif diff --git a/tools/plink/puttyps.h b/tools/plink/puttyps.h deleted file mode 100644 index e7d280814..000000000 --- a/tools/plink/puttyps.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * Find the platform-specific header for this platform. - */ - -#ifndef PUTTY_PUTTYPS_H -#define PUTTY_PUTTYPS_H - -#ifdef _WINDOWS - -#include "winstuff.h" - -#elif defined(macintosh) - -#include "macstuff.h" - -#elif defined(MACOSX) - -#include "osx.h" - -#else - -#include "unix.h" - -#endif - -#endif diff --git a/tools/plink/raw.c b/tools/plink/raw.c deleted file mode 100644 index ea51d74a7..000000000 --- a/tools/plink/raw.c +++ /dev/null @@ -1,300 +0,0 @@ -/* - * "Raw" backend. - */ - -#include -#include - -#include "putty.h" - -#ifndef FALSE -#define FALSE 0 -#endif -#ifndef TRUE -#define TRUE 1 -#endif - -#define RAW_MAX_BACKLOG 4096 - -typedef struct raw_backend_data { - const struct plug_function_table *fn; - /* the above field _must_ be first in the structure */ - - Socket s; - int bufsize; - void *frontend; -} *Raw; - -static void raw_size(void *handle, int width, int height); - -static void c_write(Raw raw, char *buf, int len) -{ - int backlog = from_backend(raw->frontend, 0, buf, len); - sk_set_frozen(raw->s, backlog > RAW_MAX_BACKLOG); -} - -static void raw_log(Plug plug, int type, SockAddr addr, int port, - const char *error_msg, int error_code) -{ - Raw raw = (Raw) plug; - char addrbuf[256], *msg; - - sk_getaddr(addr, addrbuf, lenof(addrbuf)); - - if (type == 0) - msg = dupprintf("Connecting to %s port %d", addrbuf, port); - else - msg = dupprintf("Failed to connect to %s: %s", addrbuf, error_msg); - - logevent(raw->frontend, msg); -} - -static int raw_closing(Plug plug, const char *error_msg, int error_code, - int calling_back) -{ - Raw raw = (Raw) plug; - - if (raw->s) { - sk_close(raw->s); - raw->s = NULL; - notify_remote_exit(raw->frontend); - } - if (error_msg) { - /* A socket error has occurred. */ - logevent(raw->frontend, error_msg); - connection_fatal(raw->frontend, "%s", error_msg); - } /* Otherwise, the remote side closed the connection normally. */ - return 0; -} - -static int raw_receive(Plug plug, int urgent, char *data, int len) -{ - Raw raw = (Raw) plug; - c_write(raw, data, len); - return 1; -} - -static void raw_sent(Plug plug, int bufsize) -{ - Raw raw = (Raw) plug; - raw->bufsize = bufsize; -} - -/* - * Called to set up the raw connection. - * - * Returns an error message, or NULL on success. - * - * Also places the canonical host name into `realhost'. It must be - * freed by the caller. - */ -static const char *raw_init(void *frontend_handle, void **backend_handle, - Config *cfg, - char *host, int port, char **realhost, int nodelay, - int keepalive) -{ - static const struct plug_function_table fn_table = { - raw_log, - raw_closing, - raw_receive, - raw_sent - }; - SockAddr addr; - const char *err; - Raw raw; - - raw = snew(struct raw_backend_data); - raw->fn = &fn_table; - raw->s = NULL; - *backend_handle = raw; - - raw->frontend = frontend_handle; - - /* - * Try to find host. - */ - { - char *buf; - buf = dupprintf("Looking up host \"%s\"%s", host, - (cfg->addressfamily == ADDRTYPE_IPV4 ? " (IPv4)" : - (cfg->addressfamily == ADDRTYPE_IPV6 ? " (IPv6)" : - ""))); - logevent(raw->frontend, buf); - sfree(buf); - } - addr = name_lookup(host, port, realhost, cfg, cfg->addressfamily); - if ((err = sk_addr_error(addr)) != NULL) { - sk_addr_free(addr); - return err; - } - - if (port < 0) - port = 23; /* default telnet port */ - - /* - * Open socket. - */ - raw->s = new_connection(addr, *realhost, port, 0, 1, nodelay, keepalive, - (Plug) raw, cfg); - if ((err = sk_socket_error(raw->s)) != NULL) - return err; - - if (*cfg->loghost) { - char *colon; - - sfree(*realhost); - *realhost = dupstr(cfg->loghost); - colon = strrchr(*realhost, ':'); - if (colon) { - /* - * FIXME: if we ever update this aspect of ssh.c for - * IPv6 literal management, this should change in line - * with it. - */ - *colon++ = '\0'; - } - } - - return NULL; -} - -static void raw_free(void *handle) -{ - Raw raw = (Raw) handle; - - if (raw->s) - sk_close(raw->s); - sfree(raw); -} - -/* - * Stub routine (we don't have any need to reconfigure this backend). - */ -static void raw_reconfig(void *handle, Config *cfg) -{ -} - -/* - * Called to send data down the raw connection. - */ -static int raw_send(void *handle, char *buf, int len) -{ - Raw raw = (Raw) handle; - - if (raw->s == NULL) - return 0; - - raw->bufsize = sk_write(raw->s, buf, len); - - return raw->bufsize; -} - -/* - * Called to query the current socket sendability status. - */ -static int raw_sendbuffer(void *handle) -{ - Raw raw = (Raw) handle; - return raw->bufsize; -} - -/* - * Called to set the size of the window - */ -static void raw_size(void *handle, int width, int height) -{ - /* Do nothing! */ - return; -} - -/* - * Send raw special codes. - */ -static void raw_special(void *handle, Telnet_Special code) -{ - /* Do nothing! */ - return; -} - -/* - * Return a list of the special codes that make sense in this - * protocol. - */ -static const struct telnet_special *raw_get_specials(void *handle) -{ - return NULL; -} - -static int raw_connected(void *handle) -{ - Raw raw = (Raw) handle; - return raw->s != NULL; -} - -static int raw_sendok(void *handle) -{ - return 1; -} - -static void raw_unthrottle(void *handle, int backlog) -{ - Raw raw = (Raw) handle; - sk_set_frozen(raw->s, backlog > RAW_MAX_BACKLOG); -} - -static int raw_ldisc(void *handle, int option) -{ - if (option == LD_EDIT || option == LD_ECHO) - return 1; - return 0; -} - -static void raw_provide_ldisc(void *handle, void *ldisc) -{ - /* This is a stub. */ -} - -static void raw_provide_logctx(void *handle, void *logctx) -{ - /* This is a stub. */ -} - -static int raw_exitcode(void *handle) -{ - Raw raw = (Raw) handle; - if (raw->s != NULL) - return -1; /* still connected */ - else - /* Exit codes are a meaningless concept in the Raw protocol */ - return 0; -} - -/* - * cfg_info for Raw does nothing at all. - */ -static int raw_cfg_info(void *handle) -{ - return 0; -} - -Backend raw_backend = { - raw_init, - raw_free, - raw_reconfig, - raw_send, - raw_sendbuffer, - raw_size, - raw_special, - raw_get_specials, - raw_connected, - raw_exitcode, - raw_sendok, - raw_ldisc, - raw_provide_ldisc, - raw_provide_logctx, - raw_unthrottle, - raw_cfg_info, - "raw", - PROT_RAW, - 0 -}; diff --git a/tools/plink/rlogin.c b/tools/plink/rlogin.c deleted file mode 100644 index b514d7a5b..000000000 --- a/tools/plink/rlogin.c +++ /dev/null @@ -1,373 +0,0 @@ -/* - * Rlogin backend. - */ - -#include -#include -#include - -#include "putty.h" - -#ifndef FALSE -#define FALSE 0 -#endif -#ifndef TRUE -#define TRUE 1 -#endif - -#define RLOGIN_MAX_BACKLOG 4096 - -typedef struct rlogin_tag { - const struct plug_function_table *fn; - /* the above field _must_ be first in the structure */ - - Socket s; - int bufsize; - int firstbyte; - int cansize; - int term_width, term_height; - void *frontend; -} *Rlogin; - -static void rlogin_size(void *handle, int width, int height); - -static void c_write(Rlogin rlogin, char *buf, int len) -{ - int backlog = from_backend(rlogin->frontend, 0, buf, len); - sk_set_frozen(rlogin->s, backlog > RLOGIN_MAX_BACKLOG); -} - -static void rlogin_log(Plug plug, int type, SockAddr addr, int port, - const char *error_msg, int error_code) -{ - Rlogin rlogin = (Rlogin) plug; - char addrbuf[256], *msg; - - sk_getaddr(addr, addrbuf, lenof(addrbuf)); - - if (type == 0) - msg = dupprintf("Connecting to %s port %d", addrbuf, port); - else - msg = dupprintf("Failed to connect to %s: %s", addrbuf, error_msg); - - logevent(rlogin->frontend, msg); -} - -static int rlogin_closing(Plug plug, const char *error_msg, int error_code, - int calling_back) -{ - Rlogin rlogin = (Rlogin) plug; - if (rlogin->s) { - sk_close(rlogin->s); - rlogin->s = NULL; - notify_remote_exit(rlogin->frontend); - } - if (error_msg) { - /* A socket error has occurred. */ - logevent(rlogin->frontend, error_msg); - connection_fatal(rlogin->frontend, "%s", error_msg); - } /* Otherwise, the remote side closed the connection normally. */ - return 0; -} - -static int rlogin_receive(Plug plug, int urgent, char *data, int len) -{ - Rlogin rlogin = (Rlogin) plug; - if (urgent == 2) { - char c; - - c = *data++; - len--; - if (c == '\x80') { - rlogin->cansize = 1; - rlogin_size(rlogin, rlogin->term_width, rlogin->term_height); - } - /* - * We should flush everything (aka Telnet SYNCH) if we see - * 0x02, and we should turn off and on _local_ flow control - * on 0x10 and 0x20 respectively. I'm not convinced it's - * worth it... - */ - } else { - /* - * Main rlogin protocol. This is really simple: the first - * byte is expected to be NULL and is ignored, and the rest - * is printed. - */ - if (rlogin->firstbyte) { - if (data[0] == '\0') { - data++; - len--; - } - rlogin->firstbyte = 0; - } - if (len > 0) - c_write(rlogin, data, len); - } - return 1; -} - -static void rlogin_sent(Plug plug, int bufsize) -{ - Rlogin rlogin = (Rlogin) plug; - rlogin->bufsize = bufsize; -} - -/* - * Called to set up the rlogin connection. - * - * Returns an error message, or NULL on success. - * - * Also places the canonical host name into `realhost'. It must be - * freed by the caller. - */ -static const char *rlogin_init(void *frontend_handle, void **backend_handle, - Config *cfg, - char *host, int port, char **realhost, - int nodelay, int keepalive) -{ - static const struct plug_function_table fn_table = { - rlogin_log, - rlogin_closing, - rlogin_receive, - rlogin_sent - }; - SockAddr addr; - const char *err; - Rlogin rlogin; - - rlogin = snew(struct rlogin_tag); - rlogin->fn = &fn_table; - rlogin->s = NULL; - rlogin->frontend = frontend_handle; - rlogin->term_width = cfg->width; - rlogin->term_height = cfg->height; - rlogin->firstbyte = 1; - rlogin->cansize = 0; - *backend_handle = rlogin; - - /* - * Try to find host. - */ - { - char *buf; - buf = dupprintf("Looking up host \"%s\"%s", host, - (cfg->addressfamily == ADDRTYPE_IPV4 ? " (IPv4)" : - (cfg->addressfamily == ADDRTYPE_IPV6 ? " (IPv6)" : - ""))); - logevent(rlogin->frontend, buf); - sfree(buf); - } - addr = name_lookup(host, port, realhost, cfg, cfg->addressfamily); - if ((err = sk_addr_error(addr)) != NULL) { - sk_addr_free(addr); - return err; - } - - if (port < 0) - port = 513; /* default rlogin port */ - - /* - * Open socket. - */ - rlogin->s = new_connection(addr, *realhost, port, 1, 0, - nodelay, keepalive, (Plug) rlogin, cfg); - if ((err = sk_socket_error(rlogin->s)) != NULL) - return err; - - /* - * Send local username, remote username, terminal/speed - */ - - { - char z = 0; - char *p; - char ruser[sizeof(cfg->username)]; - (void) get_remote_username(cfg, ruser, sizeof(ruser)); - sk_write(rlogin->s, &z, 1); - sk_write(rlogin->s, cfg->localusername, - strlen(cfg->localusername)); - sk_write(rlogin->s, &z, 1); - sk_write(rlogin->s, ruser, - strlen(ruser)); - sk_write(rlogin->s, &z, 1); - sk_write(rlogin->s, cfg->termtype, - strlen(cfg->termtype)); - sk_write(rlogin->s, "/", 1); - for (p = cfg->termspeed; isdigit((unsigned char)*p); p++) continue; - sk_write(rlogin->s, cfg->termspeed, p - cfg->termspeed); - rlogin->bufsize = sk_write(rlogin->s, &z, 1); - } - - if (*cfg->loghost) { - char *colon; - - sfree(*realhost); - *realhost = dupstr(cfg->loghost); - colon = strrchr(*realhost, ':'); - if (colon) { - /* - * FIXME: if we ever update this aspect of ssh.c for - * IPv6 literal management, this should change in line - * with it. - */ - *colon++ = '\0'; - } - } - - return NULL; -} - -static void rlogin_free(void *handle) -{ - Rlogin rlogin = (Rlogin) handle; - - if (rlogin->s) - sk_close(rlogin->s); - sfree(rlogin); -} - -/* - * Stub routine (we don't have any need to reconfigure this backend). - */ -static void rlogin_reconfig(void *handle, Config *cfg) -{ -} - -/* - * Called to send data down the rlogin connection. - */ -static int rlogin_send(void *handle, char *buf, int len) -{ - Rlogin rlogin = (Rlogin) handle; - - if (rlogin->s == NULL) - return 0; - - rlogin->bufsize = sk_write(rlogin->s, buf, len); - - return rlogin->bufsize; -} - -/* - * Called to query the current socket sendability status. - */ -static int rlogin_sendbuffer(void *handle) -{ - Rlogin rlogin = (Rlogin) handle; - return rlogin->bufsize; -} - -/* - * Called to set the size of the window - */ -static void rlogin_size(void *handle, int width, int height) -{ - Rlogin rlogin = (Rlogin) handle; - char b[12] = { '\xFF', '\xFF', 0x73, 0x73, 0, 0, 0, 0, 0, 0, 0, 0 }; - - rlogin->term_width = width; - rlogin->term_height = height; - - if (rlogin->s == NULL || !rlogin->cansize) - return; - - b[6] = rlogin->term_width >> 8; - b[7] = rlogin->term_width & 0xFF; - b[4] = rlogin->term_height >> 8; - b[5] = rlogin->term_height & 0xFF; - rlogin->bufsize = sk_write(rlogin->s, b, 12); - return; -} - -/* - * Send rlogin special codes. - */ -static void rlogin_special(void *handle, Telnet_Special code) -{ - /* Do nothing! */ - return; -} - -/* - * Return a list of the special codes that make sense in this - * protocol. - */ -static const struct telnet_special *rlogin_get_specials(void *handle) -{ - return NULL; -} - -static int rlogin_connected(void *handle) -{ - Rlogin rlogin = (Rlogin) handle; - return rlogin->s != NULL; -} - -static int rlogin_sendok(void *handle) -{ - /* Rlogin rlogin = (Rlogin) handle; */ - return 1; -} - -static void rlogin_unthrottle(void *handle, int backlog) -{ - Rlogin rlogin = (Rlogin) handle; - sk_set_frozen(rlogin->s, backlog > RLOGIN_MAX_BACKLOG); -} - -static int rlogin_ldisc(void *handle, int option) -{ - /* Rlogin rlogin = (Rlogin) handle; */ - return 0; -} - -static void rlogin_provide_ldisc(void *handle, void *ldisc) -{ - /* This is a stub. */ -} - -static void rlogin_provide_logctx(void *handle, void *logctx) -{ - /* This is a stub. */ -} - -static int rlogin_exitcode(void *handle) -{ - Rlogin rlogin = (Rlogin) handle; - if (rlogin->s != NULL) - return -1; /* still connected */ - else - /* If we ever implement RSH, we'll probably need to do this properly */ - return 0; -} - -/* - * cfg_info for rlogin does nothing at all. - */ -static int rlogin_cfg_info(void *handle) -{ - return 0; -} - -Backend rlogin_backend = { - rlogin_init, - rlogin_free, - rlogin_reconfig, - rlogin_send, - rlogin_sendbuffer, - rlogin_size, - rlogin_special, - rlogin_get_specials, - rlogin_connected, - rlogin_exitcode, - rlogin_sendok, - rlogin_ldisc, - rlogin_provide_ldisc, - rlogin_provide_logctx, - rlogin_unthrottle, - rlogin_cfg_info, - "rlogin", - PROT_RLOGIN, - 513 -}; diff --git a/tools/plink/settings.c b/tools/plink/settings.c deleted file mode 100644 index 31d4e1fff..000000000 --- a/tools/plink/settings.c +++ /dev/null @@ -1,936 +0,0 @@ -/* - * settings.c: read and write saved sessions. (platform-independent) - */ - -#include -#include -#include -#include "putty.h" -#include "storage.h" - -/* - * Tables of string <-> enum value mappings - */ -struct keyval { char *s; int v; }; - -/* The cipher order given here is the default order. */ -static const struct keyval ciphernames[] = { - { "aes", CIPHER_AES }, - { "blowfish", CIPHER_BLOWFISH }, - { "3des", CIPHER_3DES }, - { "WARN", CIPHER_WARN }, - { "arcfour", CIPHER_ARCFOUR }, - { "des", CIPHER_DES } -}; - -static const struct keyval kexnames[] = { - { "dh-gex-sha1", KEX_DHGEX }, - { "dh-group14-sha1", KEX_DHGROUP14 }, - { "dh-group1-sha1", KEX_DHGROUP1 }, - { "rsa", KEX_RSA }, - { "WARN", KEX_WARN } -}; - -/* - * All the terminal modes that we know about for the "TerminalModes" - * setting. (Also used by config.c for the drop-down list.) - * This is currently precisely the same as the set in ssh.c, but could - * in principle differ if other backends started to support tty modes - * (e.g., the pty backend). - */ -const char *const ttymodes[] = { - "INTR", "QUIT", "ERASE", "KILL", "EOF", - "EOL", "EOL2", "START", "STOP", "SUSP", - "DSUSP", "REPRINT", "WERASE", "LNEXT", "FLUSH", - "SWTCH", "STATUS", "DISCARD", "IGNPAR", "PARMRK", - "INPCK", "ISTRIP", "INLCR", "IGNCR", "ICRNL", - "IUCLC", "IXON", "IXANY", "IXOFF", "IMAXBEL", - "ISIG", "ICANON", "XCASE", "ECHO", "ECHOE", - "ECHOK", "ECHONL", "NOFLSH", "TOSTOP", "IEXTEN", - "ECHOCTL", "ECHOKE", "PENDIN", "OPOST", "OLCUC", - "ONLCR", "OCRNL", "ONOCR", "ONLRET", "CS7", - "CS8", "PARENB", "PARODD", NULL -}; - -/* - * Convenience functions to access the backends[] array - * (which is only present in tools that manage settings). - */ - -Backend *backend_from_name(const char *name) -{ - Backend **p; - for (p = backends; *p != NULL; p++) - if (!strcmp((*p)->name, name)) - return *p; - return NULL; -} - -Backend *backend_from_proto(int proto) -{ - Backend **p; - for (p = backends; *p != NULL; p++) - if ((*p)->protocol == proto) - return *p; - return NULL; -} - -int get_remote_username(Config *cfg, char *user, size_t len) -{ - if (*cfg->username) { - strncpy(user, cfg->username, len); - user[len-1] = '\0'; - } else { - if (cfg->username_from_env) { - /* Use local username. */ - char *luser = get_username(); - strncpy(user, luser, len); - user[len-1] = '\0'; - sfree(luser); - } else { - *user = '\0'; - } - } - return (*user != '\0'); -} - -static void gpps(void *handle, const char *name, const char *def, - char *val, int len) -{ - if (!read_setting_s(handle, name, val, len)) { - char *pdef; - - pdef = platform_default_s(name); - if (pdef) { - strncpy(val, pdef, len); - sfree(pdef); - } else { - strncpy(val, def, len); - } - - val[len - 1] = '\0'; - } -} - -/* - * gppfont and gppfile cannot have local defaults, since the very - * format of a Filename or Font is platform-dependent. So the - * platform-dependent functions MUST return some sort of value. - */ -static void gppfont(void *handle, const char *name, FontSpec *result) -{ - if (!read_setting_fontspec(handle, name, result)) - *result = platform_default_fontspec(name); -} -static void gppfile(void *handle, const char *name, Filename *result) -{ - if (!read_setting_filename(handle, name, result)) - *result = platform_default_filename(name); -} - -static void gppi(void *handle, char *name, int def, int *i) -{ - def = platform_default_i(name, def); - *i = read_setting_i(handle, name, def); -} - -/* - * Read a set of name-value pairs in the format we occasionally use: - * NAME\tVALUE\0NAME\tVALUE\0\0 in memory - * NAME=VALUE,NAME=VALUE, in storage - * `def' is in the storage format. - */ -static void gppmap(void *handle, char *name, char *def, char *val, int len) -{ - char *buf = snewn(2*len, char), *p, *q; - gpps(handle, name, def, buf, 2*len); - p = buf; - q = val; - while (*p) { - while (*p && *p != ',') { - int c = *p++; - if (c == '=') - c = '\t'; - if (c == '\\') - c = *p++; - *q++ = c; - } - if (*p == ',') - p++; - *q++ = '\0'; - } - *q = '\0'; - sfree(buf); -} - -/* - * Write a set of name/value pairs in the above format. - */ -static void wmap(void *handle, char const *key, char const *value, int len) -{ - char *buf = snewn(2*len, char), *p; - const char *q; - p = buf; - q = value; - while (*q) { - while (*q) { - int c = *q++; - if (c == '=' || c == ',' || c == '\\') - *p++ = '\\'; - if (c == '\t') - c = '='; - *p++ = c; - } - *p++ = ','; - q++; - } - *p = '\0'; - write_setting_s(handle, key, buf); - sfree(buf); -} - -static int key2val(const struct keyval *mapping, int nmaps, char *key) -{ - int i; - for (i = 0; i < nmaps; i++) - if (!strcmp(mapping[i].s, key)) return mapping[i].v; - return -1; -} - -static const char *val2key(const struct keyval *mapping, int nmaps, int val) -{ - int i; - for (i = 0; i < nmaps; i++) - if (mapping[i].v == val) return mapping[i].s; - return NULL; -} - -/* - * Helper function to parse a comma-separated list of strings into - * a preference list array of values. Any missing values are added - * to the end and duplicates are weeded. - * XXX: assumes vals in 'mapping' are small +ve integers - */ -static void gprefs(void *sesskey, char *name, char *def, - const struct keyval *mapping, int nvals, - int *array) -{ - char commalist[80]; - char *tokarg = commalist; - int n; - unsigned long seen = 0; /* bitmap for weeding dups etc */ - gpps(sesskey, name, def, commalist, sizeof(commalist)); - - /* Grotty parsing of commalist. */ - n = 0; - do { - int v; - char *key; - key = strtok(tokarg, ","); /* sorry */ - tokarg = NULL; - if (!key) break; - if (((v = key2val(mapping, nvals, key)) != -1) && - !(seen & 1< 0 && i < nvals; i++) { - const char *s = val2key(mapping, nvals, array[i]); - if (s) { - int sl = strlen(s); - if (i > 0) { - strncat(buf, ",", l); - l--; - } - strncat(buf, s, l); - l -= sl; - } - } - write_setting_s(sesskey, name, buf); -} - -char *save_settings(char *section, Config * cfg) -{ - void *sesskey; - char *errmsg; - - sesskey = open_settings_w(section, &errmsg); - if (!sesskey) - return errmsg; - save_open_settings(sesskey, cfg); - close_settings_w(sesskey); - return NULL; -} - -void save_open_settings(void *sesskey, Config *cfg) -{ - int i; - char *p; - - write_setting_i(sesskey, "Present", 1); - write_setting_s(sesskey, "HostName", cfg->host); - write_setting_filename(sesskey, "LogFileName", cfg->logfilename); - write_setting_i(sesskey, "LogType", cfg->logtype); - write_setting_i(sesskey, "LogFileClash", cfg->logxfovr); - write_setting_i(sesskey, "LogFlush", cfg->logflush); - write_setting_i(sesskey, "SSHLogOmitPasswords", cfg->logomitpass); - write_setting_i(sesskey, "SSHLogOmitData", cfg->logomitdata); - p = "raw"; - { - const Backend *b = backend_from_proto(cfg->protocol); - if (b) - p = b->name; - } - write_setting_s(sesskey, "Protocol", p); - write_setting_i(sesskey, "PortNumber", cfg->port); - /* The CloseOnExit numbers are arranged in a different order from - * the standard FORCE_ON / FORCE_OFF / AUTO. */ - write_setting_i(sesskey, "CloseOnExit", (cfg->close_on_exit+2)%3); - write_setting_i(sesskey, "WarnOnClose", !!cfg->warn_on_close); - write_setting_i(sesskey, "PingInterval", cfg->ping_interval / 60); /* minutes */ - write_setting_i(sesskey, "PingIntervalSecs", cfg->ping_interval % 60); /* seconds */ - write_setting_i(sesskey, "TCPNoDelay", cfg->tcp_nodelay); - write_setting_i(sesskey, "TCPKeepalives", cfg->tcp_keepalives); - write_setting_s(sesskey, "TerminalType", cfg->termtype); - write_setting_s(sesskey, "TerminalSpeed", cfg->termspeed); - wmap(sesskey, "TerminalModes", cfg->ttymodes, lenof(cfg->ttymodes)); - - /* Address family selection */ - write_setting_i(sesskey, "AddressFamily", cfg->addressfamily); - - /* proxy settings */ - write_setting_s(sesskey, "ProxyExcludeList", cfg->proxy_exclude_list); - write_setting_i(sesskey, "ProxyDNS", (cfg->proxy_dns+2)%3); - write_setting_i(sesskey, "ProxyLocalhost", cfg->even_proxy_localhost); - write_setting_i(sesskey, "ProxyMethod", cfg->proxy_type); - write_setting_s(sesskey, "ProxyHost", cfg->proxy_host); - write_setting_i(sesskey, "ProxyPort", cfg->proxy_port); - write_setting_s(sesskey, "ProxyUsername", cfg->proxy_username); - write_setting_s(sesskey, "ProxyPassword", cfg->proxy_password); - write_setting_s(sesskey, "ProxyTelnetCommand", cfg->proxy_telnet_command); - wmap(sesskey, "Environment", cfg->environmt, lenof(cfg->environmt)); - write_setting_s(sesskey, "UserName", cfg->username); - write_setting_i(sesskey, "UserNameFromEnvironment", cfg->username_from_env); - write_setting_s(sesskey, "LocalUserName", cfg->localusername); - write_setting_i(sesskey, "NoPTY", cfg->nopty); - write_setting_i(sesskey, "Compression", cfg->compression); - write_setting_i(sesskey, "TryAgent", cfg->tryagent); - write_setting_i(sesskey, "AgentFwd", cfg->agentfwd); - write_setting_i(sesskey, "GssapiFwd", cfg->gssapifwd); - write_setting_i(sesskey, "ChangeUsername", cfg->change_username); - wprefs(sesskey, "Cipher", ciphernames, CIPHER_MAX, - cfg->ssh_cipherlist); - wprefs(sesskey, "KEX", kexnames, KEX_MAX, cfg->ssh_kexlist); - write_setting_i(sesskey, "RekeyTime", cfg->ssh_rekey_time); - write_setting_s(sesskey, "RekeyBytes", cfg->ssh_rekey_data); - write_setting_i(sesskey, "SshNoAuth", cfg->ssh_no_userauth); - write_setting_i(sesskey, "AuthTIS", cfg->try_tis_auth); - write_setting_i(sesskey, "AuthKI", cfg->try_ki_auth); - write_setting_i(sesskey, "AuthGSSAPI", cfg->try_gssapi_auth); - write_setting_i(sesskey, "SshNoShell", cfg->ssh_no_shell); - write_setting_i(sesskey, "SshProt", cfg->sshprot); - write_setting_s(sesskey, "LogHost", cfg->loghost); - write_setting_i(sesskey, "SSH2DES", cfg->ssh2_des_cbc); - write_setting_filename(sesskey, "PublicKeyFile", cfg->keyfile); - write_setting_s(sesskey, "RemoteCommand", cfg->remote_cmd); - write_setting_i(sesskey, "RFCEnviron", cfg->rfc_environ); - write_setting_i(sesskey, "PassiveTelnet", cfg->passive_telnet); - write_setting_i(sesskey, "BackspaceIsDelete", cfg->bksp_is_delete); - write_setting_i(sesskey, "RXVTHomeEnd", cfg->rxvt_homeend); - write_setting_i(sesskey, "LinuxFunctionKeys", cfg->funky_type); - write_setting_i(sesskey, "NoApplicationKeys", cfg->no_applic_k); - write_setting_i(sesskey, "NoApplicationCursors", cfg->no_applic_c); - write_setting_i(sesskey, "NoMouseReporting", cfg->no_mouse_rep); - write_setting_i(sesskey, "NoRemoteResize", cfg->no_remote_resize); - write_setting_i(sesskey, "NoAltScreen", cfg->no_alt_screen); - write_setting_i(sesskey, "NoRemoteWinTitle", cfg->no_remote_wintitle); - write_setting_i(sesskey, "RemoteQTitleAction", cfg->remote_qtitle_action); - write_setting_i(sesskey, "NoDBackspace", cfg->no_dbackspace); - write_setting_i(sesskey, "NoRemoteCharset", cfg->no_remote_charset); - write_setting_i(sesskey, "ApplicationCursorKeys", cfg->app_cursor); - write_setting_i(sesskey, "ApplicationKeypad", cfg->app_keypad); - write_setting_i(sesskey, "NetHackKeypad", cfg->nethack_keypad); - write_setting_i(sesskey, "AltF4", cfg->alt_f4); - write_setting_i(sesskey, "AltSpace", cfg->alt_space); - write_setting_i(sesskey, "AltOnly", cfg->alt_only); - write_setting_i(sesskey, "ComposeKey", cfg->compose_key); - write_setting_i(sesskey, "CtrlAltKeys", cfg->ctrlaltkeys); - write_setting_i(sesskey, "TelnetKey", cfg->telnet_keyboard); - write_setting_i(sesskey, "TelnetRet", cfg->telnet_newline); - write_setting_i(sesskey, "LocalEcho", cfg->localecho); - write_setting_i(sesskey, "LocalEdit", cfg->localedit); - write_setting_s(sesskey, "Answerback", cfg->answerback); - write_setting_i(sesskey, "AlwaysOnTop", cfg->alwaysontop); - write_setting_i(sesskey, "FullScreenOnAltEnter", cfg->fullscreenonaltenter); - write_setting_i(sesskey, "HideMousePtr", cfg->hide_mouseptr); - write_setting_i(sesskey, "SunkenEdge", cfg->sunken_edge); - write_setting_i(sesskey, "WindowBorder", cfg->window_border); - write_setting_i(sesskey, "CurType", cfg->cursor_type); - write_setting_i(sesskey, "BlinkCur", cfg->blink_cur); - write_setting_i(sesskey, "Beep", cfg->beep); - write_setting_i(sesskey, "BeepInd", cfg->beep_ind); - write_setting_filename(sesskey, "BellWaveFile", cfg->bell_wavefile); - write_setting_i(sesskey, "BellOverload", cfg->bellovl); - write_setting_i(sesskey, "BellOverloadN", cfg->bellovl_n); - write_setting_i(sesskey, "BellOverloadT", cfg->bellovl_t -#ifdef PUTTY_UNIX_H - * 1000 -#endif - ); - write_setting_i(sesskey, "BellOverloadS", cfg->bellovl_s -#ifdef PUTTY_UNIX_H - * 1000 -#endif - ); - write_setting_i(sesskey, "ScrollbackLines", cfg->savelines); - write_setting_i(sesskey, "DECOriginMode", cfg->dec_om); - write_setting_i(sesskey, "AutoWrapMode", cfg->wrap_mode); - write_setting_i(sesskey, "LFImpliesCR", cfg->lfhascr); - write_setting_i(sesskey, "CRImpliesLF", cfg->crhaslf); - write_setting_i(sesskey, "DisableArabicShaping", cfg->arabicshaping); - write_setting_i(sesskey, "DisableBidi", cfg->bidi); - write_setting_i(sesskey, "WinNameAlways", cfg->win_name_always); - write_setting_s(sesskey, "WinTitle", cfg->wintitle); - write_setting_i(sesskey, "TermWidth", cfg->width); - write_setting_i(sesskey, "TermHeight", cfg->height); - write_setting_fontspec(sesskey, "Font", cfg->font); - write_setting_i(sesskey, "FontQuality", cfg->font_quality); - write_setting_i(sesskey, "FontVTMode", cfg->vtmode); - write_setting_i(sesskey, "UseSystemColours", cfg->system_colour); - write_setting_i(sesskey, "TryPalette", cfg->try_palette); - write_setting_i(sesskey, "ANSIColour", cfg->ansi_colour); - write_setting_i(sesskey, "Xterm256Colour", cfg->xterm_256_colour); - write_setting_i(sesskey, "BoldAsColour", cfg->bold_colour); - - for (i = 0; i < 22; i++) { - char buf[20], buf2[30]; - sprintf(buf, "Colour%d", i); - sprintf(buf2, "%d,%d,%d", cfg->colours[i][0], - cfg->colours[i][1], cfg->colours[i][2]); - write_setting_s(sesskey, buf, buf2); - } - write_setting_i(sesskey, "RawCNP", cfg->rawcnp); - write_setting_i(sesskey, "PasteRTF", cfg->rtf_paste); - write_setting_i(sesskey, "MouseIsXterm", cfg->mouse_is_xterm); - write_setting_i(sesskey, "RectSelect", cfg->rect_select); - write_setting_i(sesskey, "MouseOverride", cfg->mouse_override); - for (i = 0; i < 256; i += 32) { - char buf[20], buf2[256]; - int j; - sprintf(buf, "Wordness%d", i); - *buf2 = '\0'; - for (j = i; j < i + 32; j++) { - sprintf(buf2 + strlen(buf2), "%s%d", - (*buf2 ? "," : ""), cfg->wordness[j]); - } - write_setting_s(sesskey, buf, buf2); - } - write_setting_s(sesskey, "LineCodePage", cfg->line_codepage); - write_setting_i(sesskey, "CJKAmbigWide", cfg->cjk_ambig_wide); - write_setting_i(sesskey, "UTF8Override", cfg->utf8_override); - write_setting_s(sesskey, "Printer", cfg->printer); - write_setting_i(sesskey, "CapsLockCyr", cfg->xlat_capslockcyr); - write_setting_i(sesskey, "ScrollBar", cfg->scrollbar); - write_setting_i(sesskey, "ScrollBarFullScreen", cfg->scrollbar_in_fullscreen); - write_setting_i(sesskey, "ScrollOnKey", cfg->scroll_on_key); - write_setting_i(sesskey, "ScrollOnDisp", cfg->scroll_on_disp); - write_setting_i(sesskey, "EraseToScrollback", cfg->erase_to_scrollback); - write_setting_i(sesskey, "LockSize", cfg->resize_action); - write_setting_i(sesskey, "BCE", cfg->bce); - write_setting_i(sesskey, "BlinkText", cfg->blinktext); - write_setting_i(sesskey, "X11Forward", cfg->x11_forward); - write_setting_s(sesskey, "X11Display", cfg->x11_display); - write_setting_i(sesskey, "X11AuthType", cfg->x11_auth); - write_setting_filename(sesskey, "X11AuthFile", cfg->xauthfile); - write_setting_i(sesskey, "LocalPortAcceptAll", cfg->lport_acceptall); - write_setting_i(sesskey, "RemotePortAcceptAll", cfg->rport_acceptall); - wmap(sesskey, "PortForwardings", cfg->portfwd, lenof(cfg->portfwd)); - write_setting_i(sesskey, "BugIgnore1", 2-cfg->sshbug_ignore1); - write_setting_i(sesskey, "BugPlainPW1", 2-cfg->sshbug_plainpw1); - write_setting_i(sesskey, "BugRSA1", 2-cfg->sshbug_rsa1); - write_setting_i(sesskey, "BugHMAC2", 2-cfg->sshbug_hmac2); - write_setting_i(sesskey, "BugDeriveKey2", 2-cfg->sshbug_derivekey2); - write_setting_i(sesskey, "BugRSAPad2", 2-cfg->sshbug_rsapad2); - write_setting_i(sesskey, "BugPKSessID2", 2-cfg->sshbug_pksessid2); - write_setting_i(sesskey, "BugRekey2", 2-cfg->sshbug_rekey2); - write_setting_i(sesskey, "BugMaxPkt2", 2-cfg->sshbug_maxpkt2); - write_setting_i(sesskey, "StampUtmp", cfg->stamp_utmp); - write_setting_i(sesskey, "LoginShell", cfg->login_shell); - write_setting_i(sesskey, "ScrollbarOnLeft", cfg->scrollbar_on_left); - write_setting_fontspec(sesskey, "BoldFont", cfg->boldfont); - write_setting_fontspec(sesskey, "WideFont", cfg->widefont); - write_setting_fontspec(sesskey, "WideBoldFont", cfg->wideboldfont); - write_setting_i(sesskey, "ShadowBold", cfg->shadowbold); - write_setting_i(sesskey, "ShadowBoldOffset", cfg->shadowboldoffset); - write_setting_s(sesskey, "SerialLine", cfg->serline); - write_setting_i(sesskey, "SerialSpeed", cfg->serspeed); - write_setting_i(sesskey, "SerialDataBits", cfg->serdatabits); - write_setting_i(sesskey, "SerialStopHalfbits", cfg->serstopbits); - write_setting_i(sesskey, "SerialParity", cfg->serparity); - write_setting_i(sesskey, "SerialFlowControl", cfg->serflow); -} - -void load_settings(char *section, Config * cfg) -{ - void *sesskey; - - sesskey = open_settings_r(section); - load_open_settings(sesskey, cfg); - close_settings_r(sesskey); -} - -void load_open_settings(void *sesskey, Config *cfg) -{ - int i; - char prot[10]; - - cfg->ssh_subsys = 0; /* FIXME: load this properly */ - cfg->remote_cmd_ptr = NULL; - cfg->remote_cmd_ptr2 = NULL; - cfg->ssh_nc_host[0] = '\0'; - - gpps(sesskey, "HostName", "", cfg->host, sizeof(cfg->host)); - gppfile(sesskey, "LogFileName", &cfg->logfilename); - gppi(sesskey, "LogType", 0, &cfg->logtype); - gppi(sesskey, "LogFileClash", LGXF_ASK, &cfg->logxfovr); - gppi(sesskey, "LogFlush", 1, &cfg->logflush); - gppi(sesskey, "SSHLogOmitPasswords", 1, &cfg->logomitpass); - gppi(sesskey, "SSHLogOmitData", 0, &cfg->logomitdata); - - gpps(sesskey, "Protocol", "default", prot, 10); - cfg->protocol = default_protocol; - cfg->port = default_port; - { - const Backend *b = backend_from_name(prot); - if (b) { - cfg->protocol = b->protocol; - gppi(sesskey, "PortNumber", default_port, &cfg->port); - } - } - - /* Address family selection */ - gppi(sesskey, "AddressFamily", ADDRTYPE_UNSPEC, &cfg->addressfamily); - - /* The CloseOnExit numbers are arranged in a different order from - * the standard FORCE_ON / FORCE_OFF / AUTO. */ - gppi(sesskey, "CloseOnExit", 1, &i); cfg->close_on_exit = (i+1)%3; - gppi(sesskey, "WarnOnClose", 1, &cfg->warn_on_close); - { - /* This is two values for backward compatibility with 0.50/0.51 */ - int pingmin, pingsec; - gppi(sesskey, "PingInterval", 0, &pingmin); - gppi(sesskey, "PingIntervalSecs", 0, &pingsec); - cfg->ping_interval = pingmin * 60 + pingsec; - } - gppi(sesskey, "TCPNoDelay", 1, &cfg->tcp_nodelay); - gppi(sesskey, "TCPKeepalives", 0, &cfg->tcp_keepalives); - gpps(sesskey, "TerminalType", "xterm", cfg->termtype, - sizeof(cfg->termtype)); - gpps(sesskey, "TerminalSpeed", "38400,38400", cfg->termspeed, - sizeof(cfg->termspeed)); - { - /* This hardcodes a big set of defaults in any new saved - * sessions. Let's hope we don't change our mind. */ - int i; - char *def = dupstr(""); - /* Default: all set to "auto" */ - for (i = 0; ttymodes[i]; i++) { - char *def2 = dupprintf("%s%s=A,", def, ttymodes[i]); - sfree(def); - def = def2; - } - gppmap(sesskey, "TerminalModes", def, - cfg->ttymodes, lenof(cfg->ttymodes)); - sfree(def); - } - - /* proxy settings */ - gpps(sesskey, "ProxyExcludeList", "", cfg->proxy_exclude_list, - sizeof(cfg->proxy_exclude_list)); - gppi(sesskey, "ProxyDNS", 1, &i); cfg->proxy_dns = (i+1)%3; - gppi(sesskey, "ProxyLocalhost", 0, &cfg->even_proxy_localhost); - gppi(sesskey, "ProxyMethod", -1, &cfg->proxy_type); - if (cfg->proxy_type == -1) { - int i; - gppi(sesskey, "ProxyType", 0, &i); - if (i == 0) - cfg->proxy_type = PROXY_NONE; - else if (i == 1) - cfg->proxy_type = PROXY_HTTP; - else if (i == 3) - cfg->proxy_type = PROXY_TELNET; - else if (i == 4) - cfg->proxy_type = PROXY_CMD; - else { - gppi(sesskey, "ProxySOCKSVersion", 5, &i); - if (i == 5) - cfg->proxy_type = PROXY_SOCKS5; - else - cfg->proxy_type = PROXY_SOCKS4; - } - } - gpps(sesskey, "ProxyHost", "proxy", cfg->proxy_host, - sizeof(cfg->proxy_host)); - gppi(sesskey, "ProxyPort", 80, &cfg->proxy_port); - gpps(sesskey, "ProxyUsername", "", cfg->proxy_username, - sizeof(cfg->proxy_username)); - gpps(sesskey, "ProxyPassword", "", cfg->proxy_password, - sizeof(cfg->proxy_password)); - gpps(sesskey, "ProxyTelnetCommand", "connect %host %port\\n", - cfg->proxy_telnet_command, sizeof(cfg->proxy_telnet_command)); - gppmap(sesskey, "Environment", "", cfg->environmt, lenof(cfg->environmt)); - gpps(sesskey, "UserName", "", cfg->username, sizeof(cfg->username)); - gppi(sesskey, "UserNameFromEnvironment", 0, &cfg->username_from_env); - gpps(sesskey, "LocalUserName", "", cfg->localusername, - sizeof(cfg->localusername)); - gppi(sesskey, "NoPTY", 0, &cfg->nopty); - gppi(sesskey, "Compression", 0, &cfg->compression); - gppi(sesskey, "TryAgent", 1, &cfg->tryagent); - gppi(sesskey, "AgentFwd", 0, &cfg->agentfwd); - gppi(sesskey, "ChangeUsername", 0, &cfg->change_username); - gppi(sesskey, "GssapiFwd", 0, &cfg->gssapifwd); - gprefs(sesskey, "Cipher", "\0", - ciphernames, CIPHER_MAX, cfg->ssh_cipherlist); - { - /* Backward-compatibility: we used to have an option to - * disable gex under the "bugs" panel after one report of - * a server which offered it then choked, but we never got - * a server version string or any other reports. */ - char *default_kexes; - gppi(sesskey, "BugDHGEx2", 0, &i); i = 2-i; - if (i == FORCE_ON) - default_kexes = "dh-group14-sha1,dh-group1-sha1,rsa,WARN,dh-gex-sha1"; - else - default_kexes = "dh-gex-sha1,dh-group14-sha1,dh-group1-sha1,rsa,WARN"; - gprefs(sesskey, "KEX", default_kexes, - kexnames, KEX_MAX, cfg->ssh_kexlist); - } - gppi(sesskey, "RekeyTime", 60, &cfg->ssh_rekey_time); - gpps(sesskey, "RekeyBytes", "1G", cfg->ssh_rekey_data, - sizeof(cfg->ssh_rekey_data)); - gppi(sesskey, "SshProt", 2, &cfg->sshprot); - gpps(sesskey, "LogHost", "", cfg->loghost, sizeof(cfg->loghost)); - gppi(sesskey, "SSH2DES", 0, &cfg->ssh2_des_cbc); - gppi(sesskey, "SshNoAuth", 0, &cfg->ssh_no_userauth); - gppi(sesskey, "AuthTIS", 0, &cfg->try_tis_auth); - gppi(sesskey, "AuthKI", 1, &cfg->try_ki_auth); - gppi(sesskey, "AuthGSSAPI", 1, &cfg->try_gssapi_auth); - gppi(sesskey, "SshNoShell", 0, &cfg->ssh_no_shell); - gppfile(sesskey, "PublicKeyFile", &cfg->keyfile); - gpps(sesskey, "RemoteCommand", "", cfg->remote_cmd, - sizeof(cfg->remote_cmd)); - gppi(sesskey, "RFCEnviron", 0, &cfg->rfc_environ); - gppi(sesskey, "PassiveTelnet", 0, &cfg->passive_telnet); - gppi(sesskey, "BackspaceIsDelete", 1, &cfg->bksp_is_delete); - gppi(sesskey, "RXVTHomeEnd", 0, &cfg->rxvt_homeend); - gppi(sesskey, "LinuxFunctionKeys", 0, &cfg->funky_type); - gppi(sesskey, "NoApplicationKeys", 0, &cfg->no_applic_k); - gppi(sesskey, "NoApplicationCursors", 0, &cfg->no_applic_c); - gppi(sesskey, "NoMouseReporting", 0, &cfg->no_mouse_rep); - gppi(sesskey, "NoRemoteResize", 0, &cfg->no_remote_resize); - gppi(sesskey, "NoAltScreen", 0, &cfg->no_alt_screen); - gppi(sesskey, "NoRemoteWinTitle", 0, &cfg->no_remote_wintitle); - { - /* Backward compatibility */ - int no_remote_qtitle; - gppi(sesskey, "NoRemoteQTitle", 1, &no_remote_qtitle); - /* We deliberately interpret the old setting of "no response" as - * "empty string". This changes the behaviour, but hopefully for - * the better; the user can always recover the old behaviour. */ - gppi(sesskey, "RemoteQTitleAction", - no_remote_qtitle ? TITLE_EMPTY : TITLE_REAL, - &cfg->remote_qtitle_action); - } - gppi(sesskey, "NoDBackspace", 0, &cfg->no_dbackspace); - gppi(sesskey, "NoRemoteCharset", 0, &cfg->no_remote_charset); - gppi(sesskey, "ApplicationCursorKeys", 0, &cfg->app_cursor); - gppi(sesskey, "ApplicationKeypad", 0, &cfg->app_keypad); - gppi(sesskey, "NetHackKeypad", 0, &cfg->nethack_keypad); - gppi(sesskey, "AltF4", 1, &cfg->alt_f4); - gppi(sesskey, "AltSpace", 0, &cfg->alt_space); - gppi(sesskey, "AltOnly", 0, &cfg->alt_only); - gppi(sesskey, "ComposeKey", 0, &cfg->compose_key); - gppi(sesskey, "CtrlAltKeys", 1, &cfg->ctrlaltkeys); - gppi(sesskey, "TelnetKey", 0, &cfg->telnet_keyboard); - gppi(sesskey, "TelnetRet", 1, &cfg->telnet_newline); - gppi(sesskey, "LocalEcho", AUTO, &cfg->localecho); - gppi(sesskey, "LocalEdit", AUTO, &cfg->localedit); - gpps(sesskey, "Answerback", "PuTTY", cfg->answerback, - sizeof(cfg->answerback)); - gppi(sesskey, "AlwaysOnTop", 0, &cfg->alwaysontop); - gppi(sesskey, "FullScreenOnAltEnter", 0, &cfg->fullscreenonaltenter); - gppi(sesskey, "HideMousePtr", 0, &cfg->hide_mouseptr); - gppi(sesskey, "SunkenEdge", 0, &cfg->sunken_edge); - gppi(sesskey, "WindowBorder", 1, &cfg->window_border); - gppi(sesskey, "CurType", 0, &cfg->cursor_type); - gppi(sesskey, "BlinkCur", 0, &cfg->blink_cur); - /* pedantic compiler tells me I can't use &cfg->beep as an int * :-) */ - gppi(sesskey, "Beep", 1, &cfg->beep); - gppi(sesskey, "BeepInd", 0, &cfg->beep_ind); - gppfile(sesskey, "BellWaveFile", &cfg->bell_wavefile); - gppi(sesskey, "BellOverload", 1, &cfg->bellovl); - gppi(sesskey, "BellOverloadN", 5, &cfg->bellovl_n); - gppi(sesskey, "BellOverloadT", 2*TICKSPERSEC -#ifdef PUTTY_UNIX_H - *1000 -#endif - , &i); - cfg->bellovl_t = i -#ifdef PUTTY_UNIX_H - / 1000 -#endif - ; - gppi(sesskey, "BellOverloadS", 5*TICKSPERSEC -#ifdef PUTTY_UNIX_H - *1000 -#endif - , &i); - cfg->bellovl_s = i -#ifdef PUTTY_UNIX_H - / 1000 -#endif - ; - gppi(sesskey, "ScrollbackLines", 200, &cfg->savelines); - gppi(sesskey, "DECOriginMode", 0, &cfg->dec_om); - gppi(sesskey, "AutoWrapMode", 1, &cfg->wrap_mode); - gppi(sesskey, "LFImpliesCR", 0, &cfg->lfhascr); - gppi(sesskey, "CRImpliesLF", 0, &cfg->crhaslf); - gppi(sesskey, "DisableArabicShaping", 0, &cfg->arabicshaping); - gppi(sesskey, "DisableBidi", 0, &cfg->bidi); - gppi(sesskey, "WinNameAlways", 1, &cfg->win_name_always); - gpps(sesskey, "WinTitle", "", cfg->wintitle, sizeof(cfg->wintitle)); - gppi(sesskey, "TermWidth", 80, &cfg->width); - gppi(sesskey, "TermHeight", 24, &cfg->height); - gppfont(sesskey, "Font", &cfg->font); - gppi(sesskey, "FontQuality", FQ_DEFAULT, &cfg->font_quality); - gppi(sesskey, "FontVTMode", VT_UNICODE, (int *) &cfg->vtmode); - gppi(sesskey, "UseSystemColours", 0, &cfg->system_colour); - gppi(sesskey, "TryPalette", 0, &cfg->try_palette); - gppi(sesskey, "ANSIColour", 1, &cfg->ansi_colour); - gppi(sesskey, "Xterm256Colour", 1, &cfg->xterm_256_colour); - gppi(sesskey, "BoldAsColour", 1, &cfg->bold_colour); - - for (i = 0; i < 22; i++) { - static const char *const defaults[] = { - "187,187,187", "255,255,255", "0,0,0", "85,85,85", "0,0,0", - "0,255,0", "0,0,0", "85,85,85", "187,0,0", "255,85,85", - "0,187,0", "85,255,85", "187,187,0", "255,255,85", "0,0,187", - "85,85,255", "187,0,187", "255,85,255", "0,187,187", - "85,255,255", "187,187,187", "255,255,255" - }; - char buf[20], buf2[30]; - int c0, c1, c2; - sprintf(buf, "Colour%d", i); - gpps(sesskey, buf, defaults[i], buf2, sizeof(buf2)); - if (sscanf(buf2, "%d,%d,%d", &c0, &c1, &c2) == 3) { - cfg->colours[i][0] = c0; - cfg->colours[i][1] = c1; - cfg->colours[i][2] = c2; - } - } - gppi(sesskey, "RawCNP", 0, &cfg->rawcnp); - gppi(sesskey, "PasteRTF", 0, &cfg->rtf_paste); - gppi(sesskey, "MouseIsXterm", 0, &cfg->mouse_is_xterm); - gppi(sesskey, "RectSelect", 0, &cfg->rect_select); - gppi(sesskey, "MouseOverride", 1, &cfg->mouse_override); - for (i = 0; i < 256; i += 32) { - static const char *const defaults[] = { - "0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0", - "0,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1", - "1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,2", - "1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1", - "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1", - "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1", - "2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2", - "2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2" - }; - char buf[20], buf2[256], *p; - int j; - sprintf(buf, "Wordness%d", i); - gpps(sesskey, buf, defaults[i / 32], buf2, sizeof(buf2)); - p = buf2; - for (j = i; j < i + 32; j++) { - char *q = p; - while (*p && *p != ',') - p++; - if (*p == ',') - *p++ = '\0'; - cfg->wordness[j] = atoi(q); - } - } - /* - * The empty default for LineCodePage will be converted later - * into a plausible default for the locale. - */ - gpps(sesskey, "LineCodePage", "", cfg->line_codepage, - sizeof(cfg->line_codepage)); - gppi(sesskey, "CJKAmbigWide", 0, &cfg->cjk_ambig_wide); - gppi(sesskey, "UTF8Override", 1, &cfg->utf8_override); - gpps(sesskey, "Printer", "", cfg->printer, sizeof(cfg->printer)); - gppi (sesskey, "CapsLockCyr", 0, &cfg->xlat_capslockcyr); - gppi(sesskey, "ScrollBar", 1, &cfg->scrollbar); - gppi(sesskey, "ScrollBarFullScreen", 0, &cfg->scrollbar_in_fullscreen); - gppi(sesskey, "ScrollOnKey", 0, &cfg->scroll_on_key); - gppi(sesskey, "ScrollOnDisp", 1, &cfg->scroll_on_disp); - gppi(sesskey, "EraseToScrollback", 1, &cfg->erase_to_scrollback); - gppi(sesskey, "LockSize", 0, &cfg->resize_action); - gppi(sesskey, "BCE", 1, &cfg->bce); - gppi(sesskey, "BlinkText", 0, &cfg->blinktext); - gppi(sesskey, "X11Forward", 0, &cfg->x11_forward); - gpps(sesskey, "X11Display", "", cfg->x11_display, - sizeof(cfg->x11_display)); - gppi(sesskey, "X11AuthType", X11_MIT, &cfg->x11_auth); - gppfile(sesskey, "X11AuthFile", &cfg->xauthfile); - - gppi(sesskey, "LocalPortAcceptAll", 0, &cfg->lport_acceptall); - gppi(sesskey, "RemotePortAcceptAll", 0, &cfg->rport_acceptall); - gppmap(sesskey, "PortForwardings", "", cfg->portfwd, lenof(cfg->portfwd)); - gppi(sesskey, "BugIgnore1", 0, &i); cfg->sshbug_ignore1 = 2-i; - gppi(sesskey, "BugPlainPW1", 0, &i); cfg->sshbug_plainpw1 = 2-i; - gppi(sesskey, "BugRSA1", 0, &i); cfg->sshbug_rsa1 = 2-i; - { - int i; - gppi(sesskey, "BugHMAC2", 0, &i); cfg->sshbug_hmac2 = 2-i; - if (cfg->sshbug_hmac2 == AUTO) { - gppi(sesskey, "BuggyMAC", 0, &i); - if (i == 1) - cfg->sshbug_hmac2 = FORCE_ON; - } - } - gppi(sesskey, "BugDeriveKey2", 0, &i); cfg->sshbug_derivekey2 = 2-i; - gppi(sesskey, "BugRSAPad2", 0, &i); cfg->sshbug_rsapad2 = 2-i; - gppi(sesskey, "BugPKSessID2", 0, &i); cfg->sshbug_pksessid2 = 2-i; - gppi(sesskey, "BugRekey2", 0, &i); cfg->sshbug_rekey2 = 2-i; - gppi(sesskey, "BugMaxPkt2", 0, &i); cfg->sshbug_maxpkt2 = 2-i; - cfg->ssh_simple = FALSE; - gppi(sesskey, "StampUtmp", 1, &cfg->stamp_utmp); - gppi(sesskey, "LoginShell", 1, &cfg->login_shell); - gppi(sesskey, "ScrollbarOnLeft", 0, &cfg->scrollbar_on_left); - gppi(sesskey, "ShadowBold", 0, &cfg->shadowbold); - gppfont(sesskey, "BoldFont", &cfg->boldfont); - gppfont(sesskey, "WideFont", &cfg->widefont); - gppfont(sesskey, "WideBoldFont", &cfg->wideboldfont); - gppi(sesskey, "ShadowBoldOffset", 1, &cfg->shadowboldoffset); - gpps(sesskey, "SerialLine", "", cfg->serline, sizeof(cfg->serline)); - gppi(sesskey, "SerialSpeed", 9600, &cfg->serspeed); - gppi(sesskey, "SerialDataBits", 8, &cfg->serdatabits); - gppi(sesskey, "SerialStopHalfbits", 2, &cfg->serstopbits); - gppi(sesskey, "SerialParity", SER_PAR_NONE, &cfg->serparity); - gppi(sesskey, "SerialFlowControl", SER_FLOW_XONXOFF, &cfg->serflow); -} - -void do_defaults(char *session, Config * cfg) -{ - load_settings(session, cfg); -} - -static int sessioncmp(const void *av, const void *bv) -{ - const char *a = *(const char *const *) av; - const char *b = *(const char *const *) bv; - - /* - * Alphabetical order, except that "Default Settings" is a - * special case and comes first. - */ - if (!strcmp(a, "Default Settings")) - return -1; /* a comes first */ - if (!strcmp(b, "Default Settings")) - return +1; /* b comes first */ - /* - * FIXME: perhaps we should ignore the first & in determining - * sort order. - */ - return strcmp(a, b); /* otherwise, compare normally */ -} - -void get_sesslist(struct sesslist *list, int allocate) -{ - char otherbuf[2048]; - int buflen, bufsize, i; - char *p, *ret; - void *handle; - - if (allocate) { - - buflen = bufsize = 0; - list->buffer = NULL; - if ((handle = enum_settings_start()) != NULL) { - do { - ret = enum_settings_next(handle, otherbuf, sizeof(otherbuf)); - if (ret) { - int len = strlen(otherbuf) + 1; - if (bufsize < buflen + len) { - bufsize = buflen + len + 2048; - list->buffer = sresize(list->buffer, bufsize, char); - } - strcpy(list->buffer + buflen, otherbuf); - buflen += strlen(list->buffer + buflen) + 1; - } - } while (ret); - enum_settings_finish(handle); - } - list->buffer = sresize(list->buffer, buflen + 1, char); - list->buffer[buflen] = '\0'; - - /* - * Now set up the list of sessions. Note that "Default - * Settings" must always be claimed to exist, even if it - * doesn't really. - */ - - p = list->buffer; - list->nsessions = 1; /* "Default Settings" counts as one */ - while (*p) { - if (strcmp(p, "Default Settings")) - list->nsessions++; - while (*p) - p++; - p++; - } - - list->sessions = snewn(list->nsessions + 1, char *); - list->sessions[0] = "Default Settings"; - p = list->buffer; - i = 1; - while (*p) { - if (strcmp(p, "Default Settings")) - list->sessions[i++] = p; - while (*p) - p++; - p++; - } - - qsort(list->sessions, i, sizeof(char *), sessioncmp); - } else { - sfree(list->buffer); - sfree(list->sessions); - list->buffer = NULL; - list->sessions = NULL; - } -} diff --git a/tools/plink/ssh.c b/tools/plink/ssh.c deleted file mode 100644 index 89c0433ca..000000000 --- a/tools/plink/ssh.c +++ /dev/null @@ -1,9737 +0,0 @@ -/* - * SSH backend. - */ - -#include -#include -#include -#include -#include -#include - -#include "putty.h" -#include "tree234.h" -#include "ssh.h" -#ifndef NO_GSSAPI -#include "sshgss.h" -#endif - -#ifndef FALSE -#define FALSE 0 -#endif -#ifndef TRUE -#define TRUE 1 -#endif - -#define SSH1_MSG_DISCONNECT 1 /* 0x1 */ -#define SSH1_SMSG_PUBLIC_KEY 2 /* 0x2 */ -#define SSH1_CMSG_SESSION_KEY 3 /* 0x3 */ -#define SSH1_CMSG_USER 4 /* 0x4 */ -#define SSH1_CMSG_AUTH_RSA 6 /* 0x6 */ -#define SSH1_SMSG_AUTH_RSA_CHALLENGE 7 /* 0x7 */ -#define SSH1_CMSG_AUTH_RSA_RESPONSE 8 /* 0x8 */ -#define SSH1_CMSG_AUTH_PASSWORD 9 /* 0x9 */ -#define SSH1_CMSG_REQUEST_PTY 10 /* 0xa */ -#define SSH1_CMSG_WINDOW_SIZE 11 /* 0xb */ -#define SSH1_CMSG_EXEC_SHELL 12 /* 0xc */ -#define SSH1_CMSG_EXEC_CMD 13 /* 0xd */ -#define SSH1_SMSG_SUCCESS 14 /* 0xe */ -#define SSH1_SMSG_FAILURE 15 /* 0xf */ -#define SSH1_CMSG_STDIN_DATA 16 /* 0x10 */ -#define SSH1_SMSG_STDOUT_DATA 17 /* 0x11 */ -#define SSH1_SMSG_STDERR_DATA 18 /* 0x12 */ -#define SSH1_CMSG_EOF 19 /* 0x13 */ -#define SSH1_SMSG_EXIT_STATUS 20 /* 0x14 */ -#define SSH1_MSG_CHANNEL_OPEN_CONFIRMATION 21 /* 0x15 */ -#define SSH1_MSG_CHANNEL_OPEN_FAILURE 22 /* 0x16 */ -#define SSH1_MSG_CHANNEL_DATA 23 /* 0x17 */ -#define SSH1_MSG_CHANNEL_CLOSE 24 /* 0x18 */ -#define SSH1_MSG_CHANNEL_CLOSE_CONFIRMATION 25 /* 0x19 */ -#define SSH1_SMSG_X11_OPEN 27 /* 0x1b */ -#define SSH1_CMSG_PORT_FORWARD_REQUEST 28 /* 0x1c */ -#define SSH1_MSG_PORT_OPEN 29 /* 0x1d */ -#define SSH1_CMSG_AGENT_REQUEST_FORWARDING 30 /* 0x1e */ -#define SSH1_SMSG_AGENT_OPEN 31 /* 0x1f */ -#define SSH1_MSG_IGNORE 32 /* 0x20 */ -#define SSH1_CMSG_EXIT_CONFIRMATION 33 /* 0x21 */ -#define SSH1_CMSG_X11_REQUEST_FORWARDING 34 /* 0x22 */ -#define SSH1_CMSG_AUTH_RHOSTS_RSA 35 /* 0x23 */ -#define SSH1_MSG_DEBUG 36 /* 0x24 */ -#define SSH1_CMSG_REQUEST_COMPRESSION 37 /* 0x25 */ -#define SSH1_CMSG_AUTH_TIS 39 /* 0x27 */ -#define SSH1_SMSG_AUTH_TIS_CHALLENGE 40 /* 0x28 */ -#define SSH1_CMSG_AUTH_TIS_RESPONSE 41 /* 0x29 */ -#define SSH1_CMSG_AUTH_CCARD 70 /* 0x46 */ -#define SSH1_SMSG_AUTH_CCARD_CHALLENGE 71 /* 0x47 */ -#define SSH1_CMSG_AUTH_CCARD_RESPONSE 72 /* 0x48 */ - -#define SSH1_AUTH_RHOSTS 1 /* 0x1 */ -#define SSH1_AUTH_RSA 2 /* 0x2 */ -#define SSH1_AUTH_PASSWORD 3 /* 0x3 */ -#define SSH1_AUTH_RHOSTS_RSA 4 /* 0x4 */ -#define SSH1_AUTH_TIS 5 /* 0x5 */ -#define SSH1_AUTH_CCARD 16 /* 0x10 */ - -#define SSH1_PROTOFLAG_SCREEN_NUMBER 1 /* 0x1 */ -/* Mask for protoflags we will echo back to server if seen */ -#define SSH1_PROTOFLAGS_SUPPORTED 0 /* 0x1 */ - -#define SSH2_MSG_DISCONNECT 1 /* 0x1 */ -#define SSH2_MSG_IGNORE 2 /* 0x2 */ -#define SSH2_MSG_UNIMPLEMENTED 3 /* 0x3 */ -#define SSH2_MSG_DEBUG 4 /* 0x4 */ -#define SSH2_MSG_SERVICE_REQUEST 5 /* 0x5 */ -#define SSH2_MSG_SERVICE_ACCEPT 6 /* 0x6 */ -#define SSH2_MSG_KEXINIT 20 /* 0x14 */ -#define SSH2_MSG_NEWKEYS 21 /* 0x15 */ -#define SSH2_MSG_KEXDH_INIT 30 /* 0x1e */ -#define SSH2_MSG_KEXDH_REPLY 31 /* 0x1f */ -#define SSH2_MSG_KEX_DH_GEX_REQUEST 30 /* 0x1e */ -#define SSH2_MSG_KEX_DH_GEX_GROUP 31 /* 0x1f */ -#define SSH2_MSG_KEX_DH_GEX_INIT 32 /* 0x20 */ -#define SSH2_MSG_KEX_DH_GEX_REPLY 33 /* 0x21 */ -#define SSH2_MSG_KEXRSA_PUBKEY 30 /* 0x1e */ -#define SSH2_MSG_KEXRSA_SECRET 31 /* 0x1f */ -#define SSH2_MSG_KEXRSA_DONE 32 /* 0x20 */ -#define SSH2_MSG_USERAUTH_REQUEST 50 /* 0x32 */ -#define SSH2_MSG_USERAUTH_FAILURE 51 /* 0x33 */ -#define SSH2_MSG_USERAUTH_SUCCESS 52 /* 0x34 */ -#define SSH2_MSG_USERAUTH_BANNER 53 /* 0x35 */ -#define SSH2_MSG_USERAUTH_PK_OK 60 /* 0x3c */ -#define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ 60 /* 0x3c */ -#define SSH2_MSG_USERAUTH_INFO_REQUEST 60 /* 0x3c */ -#define SSH2_MSG_USERAUTH_INFO_RESPONSE 61 /* 0x3d */ -#define SSH2_MSG_GLOBAL_REQUEST 80 /* 0x50 */ -#define SSH2_MSG_REQUEST_SUCCESS 81 /* 0x51 */ -#define SSH2_MSG_REQUEST_FAILURE 82 /* 0x52 */ -#define SSH2_MSG_CHANNEL_OPEN 90 /* 0x5a */ -#define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91 /* 0x5b */ -#define SSH2_MSG_CHANNEL_OPEN_FAILURE 92 /* 0x5c */ -#define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93 /* 0x5d */ -#define SSH2_MSG_CHANNEL_DATA 94 /* 0x5e */ -#define SSH2_MSG_CHANNEL_EXTENDED_DATA 95 /* 0x5f */ -#define SSH2_MSG_CHANNEL_EOF 96 /* 0x60 */ -#define SSH2_MSG_CHANNEL_CLOSE 97 /* 0x61 */ -#define SSH2_MSG_CHANNEL_REQUEST 98 /* 0x62 */ -#define SSH2_MSG_CHANNEL_SUCCESS 99 /* 0x63 */ -#define SSH2_MSG_CHANNEL_FAILURE 100 /* 0x64 */ -#define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60 -#define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61 -#define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63 -#define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64 -#define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65 -#define SSH2_MSG_USERAUTH_GSSAPI_MIC 66 - -/* - * Packet type contexts, so that ssh2_pkt_type can correctly decode - * the ambiguous type numbers back into the correct type strings. - */ -typedef enum { - SSH2_PKTCTX_NOKEX, - SSH2_PKTCTX_DHGROUP, - SSH2_PKTCTX_DHGEX, - SSH2_PKTCTX_RSAKEX -} Pkt_KCtx; -typedef enum { - SSH2_PKTCTX_NOAUTH, - SSH2_PKTCTX_PUBLICKEY, - SSH2_PKTCTX_PASSWORD, - SSH2_PKTCTX_GSSAPI, - SSH2_PKTCTX_KBDINTER -} Pkt_ACtx; - -#define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1 /* 0x1 */ -#define SSH2_DISCONNECT_PROTOCOL_ERROR 2 /* 0x2 */ -#define SSH2_DISCONNECT_KEY_EXCHANGE_FAILED 3 /* 0x3 */ -#define SSH2_DISCONNECT_HOST_AUTHENTICATION_FAILED 4 /* 0x4 */ -#define SSH2_DISCONNECT_MAC_ERROR 5 /* 0x5 */ -#define SSH2_DISCONNECT_COMPRESSION_ERROR 6 /* 0x6 */ -#define SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE 7 /* 0x7 */ -#define SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8 /* 0x8 */ -#define SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9 /* 0x9 */ -#define SSH2_DISCONNECT_CONNECTION_LOST 10 /* 0xa */ -#define SSH2_DISCONNECT_BY_APPLICATION 11 /* 0xb */ -#define SSH2_DISCONNECT_TOO_MANY_CONNECTIONS 12 /* 0xc */ -#define SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER 13 /* 0xd */ -#define SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14 /* 0xe */ -#define SSH2_DISCONNECT_ILLEGAL_USER_NAME 15 /* 0xf */ - -static const char *const ssh2_disconnect_reasons[] = { - NULL, - "host not allowed to connect", - "protocol error", - "key exchange failed", - "host authentication failed", - "MAC error", - "compression error", - "service not available", - "protocol version not supported", - "host key not verifiable", - "connection lost", - "by application", - "too many connections", - "auth cancelled by user", - "no more auth methods available", - "illegal user name", -}; - -#define SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED 1 /* 0x1 */ -#define SSH2_OPEN_CONNECT_FAILED 2 /* 0x2 */ -#define SSH2_OPEN_UNKNOWN_CHANNEL_TYPE 3 /* 0x3 */ -#define SSH2_OPEN_RESOURCE_SHORTAGE 4 /* 0x4 */ - -#define SSH2_EXTENDED_DATA_STDERR 1 /* 0x1 */ - -/* - * Various remote-bug flags. - */ -#define BUG_CHOKES_ON_SSH1_IGNORE 1 -#define BUG_SSH2_HMAC 2 -#define BUG_NEEDS_SSH1_PLAIN_PASSWORD 4 -#define BUG_CHOKES_ON_RSA 8 -#define BUG_SSH2_RSA_PADDING 16 -#define BUG_SSH2_DERIVEKEY 32 -#define BUG_SSH2_REKEY 64 -#define BUG_SSH2_PK_SESSIONID 128 -#define BUG_SSH2_MAXPKT 256 - -/* - * Codes for terminal modes. - * Most of these are the same in SSH-1 and SSH-2. - * This list is derived from RFC 4254 and - * SSH-1 RFC-1.2.31. - */ -static const struct { - const char* const mode; - int opcode; - enum { TTY_OP_CHAR, TTY_OP_BOOL } type; -} ssh_ttymodes[] = { - /* "V" prefix discarded for special characters relative to SSH specs */ - { "INTR", 1, TTY_OP_CHAR }, - { "QUIT", 2, TTY_OP_CHAR }, - { "ERASE", 3, TTY_OP_CHAR }, - { "KILL", 4, TTY_OP_CHAR }, - { "EOF", 5, TTY_OP_CHAR }, - { "EOL", 6, TTY_OP_CHAR }, - { "EOL2", 7, TTY_OP_CHAR }, - { "START", 8, TTY_OP_CHAR }, - { "STOP", 9, TTY_OP_CHAR }, - { "SUSP", 10, TTY_OP_CHAR }, - { "DSUSP", 11, TTY_OP_CHAR }, - { "REPRINT", 12, TTY_OP_CHAR }, - { "WERASE", 13, TTY_OP_CHAR }, - { "LNEXT", 14, TTY_OP_CHAR }, - { "FLUSH", 15, TTY_OP_CHAR }, - { "SWTCH", 16, TTY_OP_CHAR }, - { "STATUS", 17, TTY_OP_CHAR }, - { "DISCARD", 18, TTY_OP_CHAR }, - { "IGNPAR", 30, TTY_OP_BOOL }, - { "PARMRK", 31, TTY_OP_BOOL }, - { "INPCK", 32, TTY_OP_BOOL }, - { "ISTRIP", 33, TTY_OP_BOOL }, - { "INLCR", 34, TTY_OP_BOOL }, - { "IGNCR", 35, TTY_OP_BOOL }, - { "ICRNL", 36, TTY_OP_BOOL }, - { "IUCLC", 37, TTY_OP_BOOL }, - { "IXON", 38, TTY_OP_BOOL }, - { "IXANY", 39, TTY_OP_BOOL }, - { "IXOFF", 40, TTY_OP_BOOL }, - { "IMAXBEL", 41, TTY_OP_BOOL }, - { "ISIG", 50, TTY_OP_BOOL }, - { "ICANON", 51, TTY_OP_BOOL }, - { "XCASE", 52, TTY_OP_BOOL }, - { "ECHO", 53, TTY_OP_BOOL }, - { "ECHOE", 54, TTY_OP_BOOL }, - { "ECHOK", 55, TTY_OP_BOOL }, - { "ECHONL", 56, TTY_OP_BOOL }, - { "NOFLSH", 57, TTY_OP_BOOL }, - { "TOSTOP", 58, TTY_OP_BOOL }, - { "IEXTEN", 59, TTY_OP_BOOL }, - { "ECHOCTL", 60, TTY_OP_BOOL }, - { "ECHOKE", 61, TTY_OP_BOOL }, - { "PENDIN", 62, TTY_OP_BOOL }, /* XXX is this a real mode? */ - { "OPOST", 70, TTY_OP_BOOL }, - { "OLCUC", 71, TTY_OP_BOOL }, - { "ONLCR", 72, TTY_OP_BOOL }, - { "OCRNL", 73, TTY_OP_BOOL }, - { "ONOCR", 74, TTY_OP_BOOL }, - { "ONLRET", 75, TTY_OP_BOOL }, - { "CS7", 90, TTY_OP_BOOL }, - { "CS8", 91, TTY_OP_BOOL }, - { "PARENB", 92, TTY_OP_BOOL }, - { "PARODD", 93, TTY_OP_BOOL } -}; - -/* Miscellaneous other tty-related constants. */ -#define SSH_TTY_OP_END 0 -/* The opcodes for ISPEED/OSPEED differ between SSH-1 and SSH-2. */ -#define SSH1_TTY_OP_ISPEED 192 -#define SSH1_TTY_OP_OSPEED 193 -#define SSH2_TTY_OP_ISPEED 128 -#define SSH2_TTY_OP_OSPEED 129 - -/* Helper functions for parsing tty-related config. */ -static unsigned int ssh_tty_parse_specchar(char *s) -{ - unsigned int ret; - if (*s) { - char *next = NULL; - ret = ctrlparse(s, &next); - if (!next) ret = s[0]; - } else { - ret = 255; /* special value meaning "don't set" */ - } - return ret; -} -static unsigned int ssh_tty_parse_boolean(char *s) -{ - if (stricmp(s, "yes") == 0 || - stricmp(s, "on") == 0 || - stricmp(s, "true") == 0 || - stricmp(s, "+") == 0) - return 1; /* true */ - else if (stricmp(s, "no") == 0 || - stricmp(s, "off") == 0 || - stricmp(s, "false") == 0 || - stricmp(s, "-") == 0) - return 0; /* false */ - else - return (atoi(s) != 0); -} - -#define translate(x) if (type == x) return #x -#define translatek(x,ctx) if (type == x && (pkt_kctx == ctx)) return #x -#define translatea(x,ctx) if (type == x && (pkt_actx == ctx)) return #x -static char *ssh1_pkt_type(int type) -{ - translate(SSH1_MSG_DISCONNECT); - translate(SSH1_SMSG_PUBLIC_KEY); - translate(SSH1_CMSG_SESSION_KEY); - translate(SSH1_CMSG_USER); - translate(SSH1_CMSG_AUTH_RSA); - translate(SSH1_SMSG_AUTH_RSA_CHALLENGE); - translate(SSH1_CMSG_AUTH_RSA_RESPONSE); - translate(SSH1_CMSG_AUTH_PASSWORD); - translate(SSH1_CMSG_REQUEST_PTY); - translate(SSH1_CMSG_WINDOW_SIZE); - translate(SSH1_CMSG_EXEC_SHELL); - translate(SSH1_CMSG_EXEC_CMD); - translate(SSH1_SMSG_SUCCESS); - translate(SSH1_SMSG_FAILURE); - translate(SSH1_CMSG_STDIN_DATA); - translate(SSH1_SMSG_STDOUT_DATA); - translate(SSH1_SMSG_STDERR_DATA); - translate(SSH1_CMSG_EOF); - translate(SSH1_SMSG_EXIT_STATUS); - translate(SSH1_MSG_CHANNEL_OPEN_CONFIRMATION); - translate(SSH1_MSG_CHANNEL_OPEN_FAILURE); - translate(SSH1_MSG_CHANNEL_DATA); - translate(SSH1_MSG_CHANNEL_CLOSE); - translate(SSH1_MSG_CHANNEL_CLOSE_CONFIRMATION); - translate(SSH1_SMSG_X11_OPEN); - translate(SSH1_CMSG_PORT_FORWARD_REQUEST); - translate(SSH1_MSG_PORT_OPEN); - translate(SSH1_CMSG_AGENT_REQUEST_FORWARDING); - translate(SSH1_SMSG_AGENT_OPEN); - translate(SSH1_MSG_IGNORE); - translate(SSH1_CMSG_EXIT_CONFIRMATION); - translate(SSH1_CMSG_X11_REQUEST_FORWARDING); - translate(SSH1_CMSG_AUTH_RHOSTS_RSA); - translate(SSH1_MSG_DEBUG); - translate(SSH1_CMSG_REQUEST_COMPRESSION); - translate(SSH1_CMSG_AUTH_TIS); - translate(SSH1_SMSG_AUTH_TIS_CHALLENGE); - translate(SSH1_CMSG_AUTH_TIS_RESPONSE); - translate(SSH1_CMSG_AUTH_CCARD); - translate(SSH1_SMSG_AUTH_CCARD_CHALLENGE); - translate(SSH1_CMSG_AUTH_CCARD_RESPONSE); - return "unknown"; -} -static char *ssh2_pkt_type(Pkt_KCtx pkt_kctx, Pkt_ACtx pkt_actx, int type) -{ - translatea(SSH2_MSG_USERAUTH_GSSAPI_RESPONSE,SSH2_PKTCTX_GSSAPI); - translatea(SSH2_MSG_USERAUTH_GSSAPI_TOKEN,SSH2_PKTCTX_GSSAPI); - translatea(SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE,SSH2_PKTCTX_GSSAPI); - translatea(SSH2_MSG_USERAUTH_GSSAPI_ERROR,SSH2_PKTCTX_GSSAPI); - translatea(SSH2_MSG_USERAUTH_GSSAPI_ERRTOK,SSH2_PKTCTX_GSSAPI); - translatea(SSH2_MSG_USERAUTH_GSSAPI_MIC, SSH2_PKTCTX_GSSAPI); - translate(SSH2_MSG_DISCONNECT); - translate(SSH2_MSG_IGNORE); - translate(SSH2_MSG_UNIMPLEMENTED); - translate(SSH2_MSG_DEBUG); - translate(SSH2_MSG_SERVICE_REQUEST); - translate(SSH2_MSG_SERVICE_ACCEPT); - translate(SSH2_MSG_KEXINIT); - translate(SSH2_MSG_NEWKEYS); - translatek(SSH2_MSG_KEXDH_INIT, SSH2_PKTCTX_DHGROUP); - translatek(SSH2_MSG_KEXDH_REPLY, SSH2_PKTCTX_DHGROUP); - translatek(SSH2_MSG_KEX_DH_GEX_REQUEST, SSH2_PKTCTX_DHGEX); - translatek(SSH2_MSG_KEX_DH_GEX_GROUP, SSH2_PKTCTX_DHGEX); - translatek(SSH2_MSG_KEX_DH_GEX_INIT, SSH2_PKTCTX_DHGEX); - translatek(SSH2_MSG_KEX_DH_GEX_REPLY, SSH2_PKTCTX_DHGEX); - translatek(SSH2_MSG_KEXRSA_PUBKEY, SSH2_PKTCTX_RSAKEX); - translatek(SSH2_MSG_KEXRSA_SECRET, SSH2_PKTCTX_RSAKEX); - translatek(SSH2_MSG_KEXRSA_DONE, SSH2_PKTCTX_RSAKEX); - translate(SSH2_MSG_USERAUTH_REQUEST); - translate(SSH2_MSG_USERAUTH_FAILURE); - translate(SSH2_MSG_USERAUTH_SUCCESS); - translate(SSH2_MSG_USERAUTH_BANNER); - translatea(SSH2_MSG_USERAUTH_PK_OK, SSH2_PKTCTX_PUBLICKEY); - translatea(SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ, SSH2_PKTCTX_PASSWORD); - translatea(SSH2_MSG_USERAUTH_INFO_REQUEST, SSH2_PKTCTX_KBDINTER); - translatea(SSH2_MSG_USERAUTH_INFO_RESPONSE, SSH2_PKTCTX_KBDINTER); - translate(SSH2_MSG_GLOBAL_REQUEST); - translate(SSH2_MSG_REQUEST_SUCCESS); - translate(SSH2_MSG_REQUEST_FAILURE); - translate(SSH2_MSG_CHANNEL_OPEN); - translate(SSH2_MSG_CHANNEL_OPEN_CONFIRMATION); - translate(SSH2_MSG_CHANNEL_OPEN_FAILURE); - translate(SSH2_MSG_CHANNEL_WINDOW_ADJUST); - translate(SSH2_MSG_CHANNEL_DATA); - translate(SSH2_MSG_CHANNEL_EXTENDED_DATA); - translate(SSH2_MSG_CHANNEL_EOF); - translate(SSH2_MSG_CHANNEL_CLOSE); - translate(SSH2_MSG_CHANNEL_REQUEST); - translate(SSH2_MSG_CHANNEL_SUCCESS); - translate(SSH2_MSG_CHANNEL_FAILURE); - return "unknown"; -} -#undef translate -#undef translatec - -/* Enumeration values for fields in SSH-1 packets */ -enum { - PKT_END, PKT_INT, PKT_CHAR, PKT_DATA, PKT_STR, PKT_BIGNUM, - /* These values are for communicating relevant semantics of - * fields to the packet logging code. */ - PKTT_OTHER, PKTT_PASSWORD, PKTT_DATA -}; - -/* - * Coroutine mechanics for the sillier bits of the code. If these - * macros look impenetrable to you, you might find it helpful to - * read - * - * http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html - * - * which explains the theory behind these macros. - * - * In particular, if you are getting `case expression not constant' - * errors when building with MS Visual Studio, this is because MS's - * Edit and Continue debugging feature causes their compiler to - * violate ANSI C. To disable Edit and Continue debugging: - * - * - right-click ssh.c in the FileView - * - click Settings - * - select the C/C++ tab and the General category - * - under `Debug info:', select anything _other_ than `Program - * Database for Edit and Continue'. - */ -#define crBegin(v) { int *crLine = &v; switch(v) { case 0:; -#define crState(t) \ - struct t *s; \ - if (!ssh->t) ssh->t = snew(struct t); \ - s = ssh->t; -#define crFinish(z) } *crLine = 0; return (z); } -#define crFinishV } *crLine = 0; return; } -#define crReturn(z) \ - do {\ - *crLine =__LINE__; return (z); case __LINE__:;\ - } while (0) -#define crReturnV \ - do {\ - *crLine=__LINE__; return; case __LINE__:;\ - } while (0) -#define crStop(z) do{ *crLine = 0; return (z); }while(0) -#define crStopV do{ *crLine = 0; return; }while(0) -#define crWaitUntil(c) do { crReturn(0); } while (!(c)) -#define crWaitUntilV(c) do { crReturnV; } while (!(c)) - -typedef struct ssh_tag *Ssh; -struct Packet; - -static struct Packet *ssh1_pkt_init(int pkt_type); -static struct Packet *ssh2_pkt_init(int pkt_type); -static void ssh_pkt_ensure(struct Packet *, int length); -static void ssh_pkt_adddata(struct Packet *, void *data, int len); -static void ssh_pkt_addbyte(struct Packet *, unsigned char value); -static void ssh2_pkt_addbool(struct Packet *, unsigned char value); -static void ssh_pkt_adduint32(struct Packet *, unsigned long value); -static void ssh_pkt_addstring_start(struct Packet *); -static void ssh_pkt_addstring_str(struct Packet *, char *data); -static void ssh_pkt_addstring_data(struct Packet *, char *data, int len); -static void ssh_pkt_addstring(struct Packet *, char *data); -static unsigned char *ssh2_mpint_fmt(Bignum b, int *len); -static void ssh1_pkt_addmp(struct Packet *, Bignum b); -static void ssh2_pkt_addmp(struct Packet *, Bignum b); -static int ssh2_pkt_construct(Ssh, struct Packet *); -static void ssh2_pkt_send(Ssh, struct Packet *); -static void ssh2_pkt_send_noqueue(Ssh, struct Packet *); -static int do_ssh1_login(Ssh ssh, unsigned char *in, int inlen, - struct Packet *pktin); -static void do_ssh2_authconn(Ssh ssh, unsigned char *in, int inlen, - struct Packet *pktin); - -/* - * Buffer management constants. There are several of these for - * various different purposes: - * - * - SSH1_BUFFER_LIMIT is the amount of backlog that must build up - * on a local data stream before we throttle the whole SSH - * connection (in SSH-1 only). Throttling the whole connection is - * pretty drastic so we set this high in the hope it won't - * happen very often. - * - * - SSH_MAX_BACKLOG is the amount of backlog that must build up - * on the SSH connection itself before we defensively throttle - * _all_ local data streams. This is pretty drastic too (though - * thankfully unlikely in SSH-2 since the window mechanism should - * ensure that the server never has any need to throttle its end - * of the connection), so we set this high as well. - * - * - OUR_V2_WINSIZE is the maximum window size we present on SSH-2 - * channels. - * - * - OUR_V2_BIGWIN is the window size we advertise for the only - * channel in a simple connection. It must be <= INT_MAX. - * - * - OUR_V2_MAXPKT is the official "maximum packet size" we send - * to the remote side. This actually has nothing to do with the - * size of the _packet_, but is instead a limit on the amount - * of data we're willing to receive in a single SSH2 channel - * data message. - * - * - OUR_V2_PACKETLIMIT is actually the maximum size of SSH - * _packet_ we're prepared to cope with. It must be a multiple - * of the cipher block size, and must be at least 35000. - */ - -#define SSH1_BUFFER_LIMIT 32768 -#define SSH_MAX_BACKLOG 32768 -#define OUR_V2_WINSIZE 16384 -#define OUR_V2_BIGWIN 0x7fffffff -#define OUR_V2_MAXPKT 0x4000UL -#define OUR_V2_PACKETLIMIT 0x9000UL - -/* Maximum length of passwords/passphrases (arbitrary) */ -#define SSH_MAX_PASSWORD_LEN 100 - -const static struct ssh_signkey *hostkey_algs[] = { &ssh_rsa, &ssh_dss }; - -const static struct ssh_mac *macs[] = { - &ssh_hmac_sha1, &ssh_hmac_sha1_96, &ssh_hmac_md5 -}; -const static struct ssh_mac *buggymacs[] = { - &ssh_hmac_sha1_buggy, &ssh_hmac_sha1_96_buggy, &ssh_hmac_md5 -}; - -static void *ssh_comp_none_init(void) -{ - return NULL; -} -static void ssh_comp_none_cleanup(void *handle) -{ -} -static int ssh_comp_none_block(void *handle, unsigned char *block, int len, - unsigned char **outblock, int *outlen) -{ - return 0; -} -static int ssh_comp_none_disable(void *handle) -{ - return 0; -} -const static struct ssh_compress ssh_comp_none = { - "none", - ssh_comp_none_init, ssh_comp_none_cleanup, ssh_comp_none_block, - ssh_comp_none_init, ssh_comp_none_cleanup, ssh_comp_none_block, - ssh_comp_none_disable, NULL -}; -extern const struct ssh_compress ssh_zlib; -const static struct ssh_compress *compressions[] = { - &ssh_zlib, &ssh_comp_none -}; - -enum { /* channel types */ - CHAN_MAINSESSION, - CHAN_X11, - CHAN_AGENT, - CHAN_SOCKDATA, - CHAN_SOCKDATA_DORMANT /* one the remote hasn't confirmed */ -}; - -/* - * little structure to keep track of outstanding WINDOW_ADJUSTs - */ -struct winadj { - struct winadj *next; - unsigned size; -}; - -/* - * 2-3-4 tree storing channels. - */ -struct ssh_channel { - Ssh ssh; /* pointer back to main context */ - unsigned remoteid, localid; - int type; - /* True if we opened this channel but server hasn't confirmed. */ - int halfopen; - /* - * In SSH-1, this value contains four bits: - * - * 1 We have sent SSH1_MSG_CHANNEL_CLOSE. - * 2 We have sent SSH1_MSG_CHANNEL_CLOSE_CONFIRMATION. - * 4 We have received SSH1_MSG_CHANNEL_CLOSE. - * 8 We have received SSH1_MSG_CHANNEL_CLOSE_CONFIRMATION. - * - * A channel is completely finished with when all four bits are set. - */ - int closes; - /* - * True if this channel is causing the underlying connection to be - * throttled. - */ - int throttling_conn; - union { - struct ssh2_data_channel { - bufchain outbuffer; - unsigned remwindow, remmaxpkt; - /* locwindow is signed so we can cope with excess data. */ - int locwindow, locmaxwin; - /* - * remlocwin is the amount of local window that we think - * the remote end had available to it after it sent the - * last data packet or window adjust ack. - */ - int remlocwin; - /* - * These store the list of window adjusts that haven't - * been acked. - */ - struct winadj *winadj_head, *winadj_tail; - enum { THROTTLED, UNTHROTTLING, UNTHROTTLED } throttle_state; - } v2; - } v; - union { - struct ssh_agent_channel { - unsigned char *message; - unsigned char msglen[4]; - unsigned lensofar, totallen; - } a; - struct ssh_x11_channel { - Socket s; - } x11; - struct ssh_pfd_channel { - Socket s; - } pfd; - } u; -}; - -/* - * 2-3-4 tree storing remote->local port forwardings. SSH-1 and SSH-2 - * use this structure in different ways, reflecting SSH-2's - * altogether saner approach to port forwarding. - * - * In SSH-1, you arrange a remote forwarding by sending the server - * the remote port number, and the local destination host:port. - * When a connection comes in, the server sends you back that - * host:port pair, and you connect to it. This is a ready-made - * security hole if you're not on the ball: a malicious server - * could send you back _any_ host:port pair, so if you trustingly - * connect to the address it gives you then you've just opened the - * entire inside of your corporate network just by connecting - * through it to a dodgy SSH server. Hence, we must store a list of - * host:port pairs we _are_ trying to forward to, and reject a - * connection request from the server if it's not in the list. - * - * In SSH-2, each side of the connection minds its own business and - * doesn't send unnecessary information to the other. You arrange a - * remote forwarding by sending the server just the remote port - * number. When a connection comes in, the server tells you which - * of its ports was connected to; and _you_ have to remember what - * local host:port pair went with that port number. - * - * Hence, in SSH-1 this structure is indexed by destination - * host:port pair, whereas in SSH-2 it is indexed by source port. - */ -struct ssh_portfwd; /* forward declaration */ - -struct ssh_rportfwd { - unsigned sport, dport; - char dhost[256]; - char *sportdesc; - struct ssh_portfwd *pfrec; -}; -#define free_rportfwd(pf) ( \ - ((pf) ? (sfree((pf)->sportdesc)) : (void)0 ), sfree(pf) ) - -/* - * Separately to the rportfwd tree (which is for looking up port - * open requests from the server), a tree of _these_ structures is - * used to keep track of all the currently open port forwardings, - * so that we can reconfigure in mid-session if the user requests - * it. - */ -struct ssh_portfwd { - enum { DESTROY, KEEP, CREATE } status; - int type; - unsigned sport, dport; - char *saddr, *daddr; - char *sserv, *dserv; - struct ssh_rportfwd *remote; - int addressfamily; - void *local; -}; -#define free_portfwd(pf) ( \ - ((pf) ? (sfree((pf)->saddr), sfree((pf)->daddr), \ - sfree((pf)->sserv), sfree((pf)->dserv)) : (void)0 ), sfree(pf) ) - -struct Packet { - long length; /* length of `data' actually used */ - long forcepad; /* SSH-2: force padding to at least this length */ - int type; /* only used for incoming packets */ - unsigned long sequence; /* SSH-2 incoming sequence number */ - unsigned char *data; /* allocated storage */ - unsigned char *body; /* offset of payload within `data' */ - long savedpos; /* temporary index into `data' (for strings) */ - long maxlen; /* amount of storage allocated for `data' */ - long encrypted_len; /* for SSH-2 total-size counting */ - - /* - * State associated with packet logging - */ - int logmode; - int nblanks; - struct logblank_t *blanks; -}; - -static void ssh1_protocol(Ssh ssh, void *vin, int inlen, - struct Packet *pktin); -static void ssh2_protocol(Ssh ssh, void *vin, int inlen, - struct Packet *pktin); -static void ssh1_protocol_setup(Ssh ssh); -static void ssh2_protocol_setup(Ssh ssh); -static void ssh_size(void *handle, int width, int height); -static void ssh_special(void *handle, Telnet_Special); -static int ssh2_try_send(struct ssh_channel *c); -static void ssh2_add_channel_data(struct ssh_channel *c, char *buf, int len); -static void ssh_throttle_all(Ssh ssh, int enable, int bufsize); -static void ssh2_set_window(struct ssh_channel *c, int newwin); -static int ssh_sendbuffer(void *handle); -static int ssh_do_close(Ssh ssh, int notify_exit); -static unsigned long ssh_pkt_getuint32(struct Packet *pkt); -static int ssh2_pkt_getbool(struct Packet *pkt); -static void ssh_pkt_getstring(struct Packet *pkt, char **p, int *length); -static void ssh2_timer(void *ctx, long now); -static int do_ssh2_transport(Ssh ssh, void *vin, int inlen, - struct Packet *pktin); - -struct rdpkt1_state_tag { - long len, pad, biglen, to_read; - unsigned long realcrc, gotcrc; - unsigned char *p; - int i; - int chunk; - struct Packet *pktin; -}; - -struct rdpkt2_state_tag { - long len, pad, payload, packetlen, maclen; - int i; - int cipherblk; - unsigned long incoming_sequence; - struct Packet *pktin; -}; - -typedef void (*handler_fn_t)(Ssh ssh, struct Packet *pktin); -typedef void (*chandler_fn_t)(Ssh ssh, struct Packet *pktin, void *ctx); - -struct queued_handler; -struct queued_handler { - int msg1, msg2; - chandler_fn_t handler; - void *ctx; - struct queued_handler *next; -}; - -struct ssh_tag { - const struct plug_function_table *fn; - /* the above field _must_ be first in the structure */ - - char *v_c, *v_s; - void *exhash; - - Socket s; - - void *ldisc; - void *logctx; - - unsigned char session_key[32]; - int v1_compressing; - int v1_remote_protoflags; - int v1_local_protoflags; - int agentfwd_enabled; - int X11_fwd_enabled; - int remote_bugs; - const struct ssh_cipher *cipher; - void *v1_cipher_ctx; - void *crcda_ctx; - const struct ssh2_cipher *cscipher, *sccipher; - void *cs_cipher_ctx, *sc_cipher_ctx; - const struct ssh_mac *csmac, *scmac; - void *cs_mac_ctx, *sc_mac_ctx; - const struct ssh_compress *cscomp, *sccomp; - void *cs_comp_ctx, *sc_comp_ctx; - const struct ssh_kex *kex; - const struct ssh_signkey *hostkey; - unsigned char v2_session_id[SSH2_KEX_MAX_HASH_LEN]; - int v2_session_id_len; - void *kex_ctx; - - char *savedhost; - int savedport; - int send_ok; - int echoing, editing; - - void *frontend; - - int ospeed, ispeed; /* temporaries */ - int term_width, term_height; - - tree234 *channels; /* indexed by local id */ - struct ssh_channel *mainchan; /* primary session channel */ - int ncmode; /* is primary channel direct-tcpip? */ - int exitcode; - int close_expected; - int clean_exit; - - tree234 *rportfwds, *portfwds; - - enum { - SSH_STATE_PREPACKET, - SSH_STATE_BEFORE_SIZE, - SSH_STATE_INTERMED, - SSH_STATE_SESSION, - SSH_STATE_CLOSED - } state; - - int size_needed, eof_needed; - - struct Packet **queue; - int queuelen, queuesize; - int queueing; - unsigned char *deferred_send_data; - int deferred_len, deferred_size; - - /* - * Gross hack: pscp will try to start SFTP but fall back to - * scp1 if that fails. This variable is the means by which - * scp.c can reach into the SSH code and find out which one it - * got. - */ - int fallback_cmd; - - bufchain banner; /* accumulates banners during do_ssh2_authconn */ - - Pkt_KCtx pkt_kctx; - Pkt_ACtx pkt_actx; - - struct X11Display *x11disp; - - int version; - int conn_throttle_count; - int overall_bufsize; - int throttled_all; - int v1_stdout_throttling; - unsigned long v2_outgoing_sequence; - - int ssh1_rdpkt_crstate; - int ssh2_rdpkt_crstate; - int do_ssh_init_crstate; - int ssh_gotdata_crstate; - int do_ssh1_login_crstate; - int do_ssh1_connection_crstate; - int do_ssh2_transport_crstate; - int do_ssh2_authconn_crstate; - - void *do_ssh_init_state; - void *do_ssh1_login_state; - void *do_ssh2_transport_state; - void *do_ssh2_authconn_state; - - struct rdpkt1_state_tag rdpkt1_state; - struct rdpkt2_state_tag rdpkt2_state; - - /* SSH-1 and SSH-2 use this for different things, but both use it */ - int protocol_initial_phase_done; - - void (*protocol) (Ssh ssh, void *vin, int inlen, - struct Packet *pkt); - struct Packet *(*s_rdpkt) (Ssh ssh, unsigned char **data, int *datalen); - - /* - * We maintain a full _copy_ of a Config structure here, not - * merely a pointer to it. That way, when we're passed a new - * one for reconfiguration, we can check the differences and - * potentially reconfigure port forwardings etc in mid-session. - */ - Config cfg; - - /* - * Used to transfer data back from async callbacks. - */ - void *agent_response; - int agent_response_len; - int user_response; - - /* - * The SSH connection can be set as `frozen', meaning we are - * not currently accepting incoming data from the network. This - * is slightly more serious than setting the _socket_ as - * frozen, because we may already have had data passed to us - * from the network which we need to delay processing until - * after the freeze is lifted, so we also need a bufchain to - * store that data. - */ - int frozen; - bufchain queued_incoming_data; - - /* - * Dispatch table for packet types that we may have to deal - * with at any time. - */ - handler_fn_t packet_dispatch[256]; - - /* - * Queues of one-off handler functions for success/failure - * indications from a request. - */ - struct queued_handler *qhead, *qtail; - - /* - * This module deals with sending keepalives. - */ - Pinger pinger; - - /* - * Track incoming and outgoing data sizes and time, for - * size-based rekeys. - */ - unsigned long incoming_data_size, outgoing_data_size, deferred_data_size; - unsigned long max_data_size; - int kex_in_progress; - long next_rekey, last_rekey; - char *deferred_rekey_reason; /* points to STATIC string; don't free */ - - /* - * Fully qualified host name, which we need if doing GSSAPI. - */ - char *fullhostname; -}; - -#define logevent(s) logevent(ssh->frontend, s) - -/* logevent, only printf-formatted. */ -static void logeventf(Ssh ssh, const char *fmt, ...) -{ - va_list ap; - char *buf; - - va_start(ap, fmt); - buf = dupvprintf(fmt, ap); - va_end(ap); - logevent(buf); - sfree(buf); -} - -#define bombout(msg) \ - do { \ - char *text = dupprintf msg; \ - ssh_do_close(ssh, FALSE); \ - logevent(text); \ - connection_fatal(ssh->frontend, "%s", text); \ - sfree(text); \ - } while (0) - -/* Functions to leave bits out of the SSH packet log file. */ - -static void dont_log_password(Ssh ssh, struct Packet *pkt, int blanktype) -{ - if (ssh->cfg.logomitpass) - pkt->logmode = blanktype; -} - -static void dont_log_data(Ssh ssh, struct Packet *pkt, int blanktype) -{ - if (ssh->cfg.logomitdata) - pkt->logmode = blanktype; -} - -static void end_log_omission(Ssh ssh, struct Packet *pkt) -{ - pkt->logmode = PKTLOG_EMIT; -} - -/* Helper function for common bits of parsing cfg.ttymodes. */ -static void parse_ttymodes(Ssh ssh, char *modes, - void (*do_mode)(void *data, char *mode, char *val), - void *data) -{ - while (*modes) { - char *t = strchr(modes, '\t'); - char *m = snewn(t-modes+1, char); - char *val; - strncpy(m, modes, t-modes); - m[t-modes] = '\0'; - if (*(t+1) == 'A') - val = get_ttymode(ssh->frontend, m); - else - val = dupstr(t+2); - if (val) - do_mode(data, m, val); - sfree(m); - sfree(val); - modes += strlen(modes) + 1; - } -} - -static int ssh_channelcmp(void *av, void *bv) -{ - struct ssh_channel *a = (struct ssh_channel *) av; - struct ssh_channel *b = (struct ssh_channel *) bv; - if (a->localid < b->localid) - return -1; - if (a->localid > b->localid) - return +1; - return 0; -} -static int ssh_channelfind(void *av, void *bv) -{ - unsigned *a = (unsigned *) av; - struct ssh_channel *b = (struct ssh_channel *) bv; - if (*a < b->localid) - return -1; - if (*a > b->localid) - return +1; - return 0; -} - -static int ssh_rportcmp_ssh1(void *av, void *bv) -{ - struct ssh_rportfwd *a = (struct ssh_rportfwd *) av; - struct ssh_rportfwd *b = (struct ssh_rportfwd *) bv; - int i; - if ( (i = strcmp(a->dhost, b->dhost)) != 0) - return i < 0 ? -1 : +1; - if (a->dport > b->dport) - return +1; - if (a->dport < b->dport) - return -1; - return 0; -} - -static int ssh_rportcmp_ssh2(void *av, void *bv) -{ - struct ssh_rportfwd *a = (struct ssh_rportfwd *) av; - struct ssh_rportfwd *b = (struct ssh_rportfwd *) bv; - - if (a->sport > b->sport) - return +1; - if (a->sport < b->sport) - return -1; - return 0; -} - -/* - * Special form of strcmp which can cope with NULL inputs. NULL is - * defined to sort before even the empty string. - */ -static int nullstrcmp(const char *a, const char *b) -{ - if (a == NULL && b == NULL) - return 0; - if (a == NULL) - return -1; - if (b == NULL) - return +1; - return strcmp(a, b); -} - -static int ssh_portcmp(void *av, void *bv) -{ - struct ssh_portfwd *a = (struct ssh_portfwd *) av; - struct ssh_portfwd *b = (struct ssh_portfwd *) bv; - int i; - if (a->type > b->type) - return +1; - if (a->type < b->type) - return -1; - if (a->addressfamily > b->addressfamily) - return +1; - if (a->addressfamily < b->addressfamily) - return -1; - if ( (i = nullstrcmp(a->saddr, b->saddr)) != 0) - return i < 0 ? -1 : +1; - if (a->sport > b->sport) - return +1; - if (a->sport < b->sport) - return -1; - if (a->type != 'D') { - if ( (i = nullstrcmp(a->daddr, b->daddr)) != 0) - return i < 0 ? -1 : +1; - if (a->dport > b->dport) - return +1; - if (a->dport < b->dport) - return -1; - } - return 0; -} - -static int alloc_channel_id(Ssh ssh) -{ - const unsigned CHANNEL_NUMBER_OFFSET = 256; - unsigned low, high, mid; - int tsize; - struct ssh_channel *c; - - /* - * First-fit allocation of channel numbers: always pick the - * lowest unused one. To do this, binary-search using the - * counted B-tree to find the largest channel ID which is in a - * contiguous sequence from the beginning. (Precisely - * everything in that sequence must have ID equal to its tree - * index plus CHANNEL_NUMBER_OFFSET.) - */ - tsize = count234(ssh->channels); - - low = -1; - high = tsize; - while (high - low > 1) { - mid = (high + low) / 2; - c = index234(ssh->channels, mid); - if (c->localid == mid + CHANNEL_NUMBER_OFFSET) - low = mid; /* this one is fine */ - else - high = mid; /* this one is past it */ - } - /* - * Now low points to either -1, or the tree index of the - * largest ID in the initial sequence. - */ - { - unsigned i = low + 1 + CHANNEL_NUMBER_OFFSET; - assert(NULL == find234(ssh->channels, &i, ssh_channelfind)); - } - return low + 1 + CHANNEL_NUMBER_OFFSET; -} - -static void c_write_stderr(int trusted, const char *buf, int len) -{ - int i; - for (i = 0; i < len; i++) - if (buf[i] != '\r' && (trusted || buf[i] == '\n' || (buf[i] & 0x60))) - fputc(buf[i], stderr); -} - -static void c_write(Ssh ssh, const char *buf, int len) -{ - if (flags & FLAG_STDERR) - c_write_stderr(1, buf, len); - else - from_backend(ssh->frontend, 1, buf, len); -} - -static void c_write_untrusted(Ssh ssh, const char *buf, int len) -{ - if (flags & FLAG_STDERR) - c_write_stderr(0, buf, len); - else - from_backend_untrusted(ssh->frontend, buf, len); -} - -static void c_write_str(Ssh ssh, const char *buf) -{ - c_write(ssh, buf, strlen(buf)); -} - -static void ssh_free_packet(struct Packet *pkt) -{ - sfree(pkt->data); - sfree(pkt); -} -static struct Packet *ssh_new_packet(void) -{ - struct Packet *pkt = snew(struct Packet); - - pkt->body = pkt->data = NULL; - pkt->maxlen = 0; - pkt->logmode = PKTLOG_EMIT; - pkt->nblanks = 0; - pkt->blanks = NULL; - - return pkt; -} - -/* - * Collect incoming data in the incoming packet buffer. - * Decipher and verify the packet when it is completely read. - * Drop SSH1_MSG_DEBUG and SSH1_MSG_IGNORE packets. - * Update the *data and *datalen variables. - * Return a Packet structure when a packet is completed. - */ -static struct Packet *ssh1_rdpkt(Ssh ssh, unsigned char **data, int *datalen) -{ - struct rdpkt1_state_tag *st = &ssh->rdpkt1_state; - - crBegin(ssh->ssh1_rdpkt_crstate); - - st->pktin = ssh_new_packet(); - - st->pktin->type = 0; - st->pktin->length = 0; - - for (st->i = st->len = 0; st->i < 4; st->i++) { - while ((*datalen) == 0) - crReturn(NULL); - st->len = (st->len << 8) + **data; - (*data)++, (*datalen)--; - } - - st->pad = 8 - (st->len % 8); - st->biglen = st->len + st->pad; - st->pktin->length = st->len - 5; - - if (st->biglen < 0) { - bombout(("Extremely large packet length from server suggests" - " data stream corruption")); - ssh_free_packet(st->pktin); - crStop(NULL); - } - - st->pktin->maxlen = st->biglen; - st->pktin->data = snewn(st->biglen + APIEXTRA, unsigned char); - - st->to_read = st->biglen; - st->p = st->pktin->data; - while (st->to_read > 0) { - st->chunk = st->to_read; - while ((*datalen) == 0) - crReturn(NULL); - if (st->chunk > (*datalen)) - st->chunk = (*datalen); - memcpy(st->p, *data, st->chunk); - *data += st->chunk; - *datalen -= st->chunk; - st->p += st->chunk; - st->to_read -= st->chunk; - } - - if (ssh->cipher && detect_attack(ssh->crcda_ctx, st->pktin->data, - st->biglen, NULL)) { - bombout(("Network attack (CRC compensation) detected!")); - ssh_free_packet(st->pktin); - crStop(NULL); - } - - if (ssh->cipher) - ssh->cipher->decrypt(ssh->v1_cipher_ctx, st->pktin->data, st->biglen); - - st->realcrc = crc32_compute(st->pktin->data, st->biglen - 4); - st->gotcrc = GET_32BIT(st->pktin->data + st->biglen - 4); - if (st->gotcrc != st->realcrc) { - bombout(("Incorrect CRC received on packet")); - ssh_free_packet(st->pktin); - crStop(NULL); - } - - st->pktin->body = st->pktin->data + st->pad + 1; - st->pktin->savedpos = 0; - - if (ssh->v1_compressing) { - unsigned char *decompblk; - int decomplen; - if (!zlib_decompress_block(ssh->sc_comp_ctx, - st->pktin->body - 1, st->pktin->length + 1, - &decompblk, &decomplen)) { - bombout(("Zlib decompression encountered invalid data")); - ssh_free_packet(st->pktin); - crStop(NULL); - } - - if (st->pktin->maxlen < st->pad + decomplen) { - st->pktin->maxlen = st->pad + decomplen; - st->pktin->data = sresize(st->pktin->data, - st->pktin->maxlen + APIEXTRA, - unsigned char); - st->pktin->body = st->pktin->data + st->pad + 1; - } - - memcpy(st->pktin->body - 1, decompblk, decomplen); - sfree(decompblk); - st->pktin->length = decomplen - 1; - } - - st->pktin->type = st->pktin->body[-1]; - - /* - * Log incoming packet, possibly omitting sensitive fields. - */ - if (ssh->logctx) { - int nblanks = 0; - struct logblank_t blank; - if (ssh->cfg.logomitdata) { - int do_blank = FALSE, blank_prefix = 0; - /* "Session data" packets - omit the data field */ - if ((st->pktin->type == SSH1_SMSG_STDOUT_DATA) || - (st->pktin->type == SSH1_SMSG_STDERR_DATA)) { - do_blank = TRUE; blank_prefix = 4; - } else if (st->pktin->type == SSH1_MSG_CHANNEL_DATA) { - do_blank = TRUE; blank_prefix = 8; - } - if (do_blank) { - blank.offset = blank_prefix; - blank.len = st->pktin->length; - blank.type = PKTLOG_OMIT; - nblanks = 1; - } - } - log_packet(ssh->logctx, - PKT_INCOMING, st->pktin->type, - ssh1_pkt_type(st->pktin->type), - st->pktin->body, st->pktin->length, - nblanks, &blank, NULL); - } - - crFinish(st->pktin); -} - -static struct Packet *ssh2_rdpkt(Ssh ssh, unsigned char **data, int *datalen) -{ - struct rdpkt2_state_tag *st = &ssh->rdpkt2_state; - - crBegin(ssh->ssh2_rdpkt_crstate); - - st->pktin = ssh_new_packet(); - - st->pktin->type = 0; - st->pktin->length = 0; - if (ssh->sccipher) - st->cipherblk = ssh->sccipher->blksize; - else - st->cipherblk = 8; - if (st->cipherblk < 8) - st->cipherblk = 8; - st->maclen = ssh->scmac ? ssh->scmac->len : 0; - - if (ssh->sccipher && (ssh->sccipher->flags & SSH_CIPHER_IS_CBC) && - ssh->scmac) { - /* - * When dealing with a CBC-mode cipher, we want to avoid the - * possibility of an attacker's tweaking the ciphertext stream - * so as to cause us to feed the same block to the block - * cipher more than once and thus leak information - * (VU#958563). The way we do this is not to take any - * decisions on the basis of anything we've decrypted until - * we've verified it with a MAC. That includes the packet - * length, so we just read data and check the MAC repeatedly, - * and when the MAC passes, see if the length we've got is - * plausible. - */ - - /* May as well allocate the whole lot now. */ - st->pktin->data = snewn(OUR_V2_PACKETLIMIT + st->maclen + APIEXTRA, - unsigned char); - - /* Read an amount corresponding to the MAC. */ - for (st->i = 0; st->i < st->maclen; st->i++) { - while ((*datalen) == 0) - crReturn(NULL); - st->pktin->data[st->i] = *(*data)++; - (*datalen)--; - } - - st->packetlen = 0; - { - unsigned char seq[4]; - ssh->scmac->start(ssh->sc_mac_ctx); - PUT_32BIT(seq, st->incoming_sequence); - ssh->scmac->bytes(ssh->sc_mac_ctx, seq, 4); - } - - for (;;) { /* Once around this loop per cipher block. */ - /* Read another cipher-block's worth, and tack it onto the end. */ - for (st->i = 0; st->i < st->cipherblk; st->i++) { - while ((*datalen) == 0) - crReturn(NULL); - st->pktin->data[st->packetlen+st->maclen+st->i] = *(*data)++; - (*datalen)--; - } - /* Decrypt one more block (a little further back in the stream). */ - ssh->sccipher->decrypt(ssh->sc_cipher_ctx, - st->pktin->data + st->packetlen, - st->cipherblk); - /* Feed that block to the MAC. */ - ssh->scmac->bytes(ssh->sc_mac_ctx, - st->pktin->data + st->packetlen, st->cipherblk); - st->packetlen += st->cipherblk; - /* See if that gives us a valid packet. */ - if (ssh->scmac->verresult(ssh->sc_mac_ctx, - st->pktin->data + st->packetlen) && - (st->len = GET_32BIT(st->pktin->data)) + 4 == st->packetlen) - break; - if (st->packetlen >= OUR_V2_PACKETLIMIT) { - bombout(("No valid incoming packet found")); - ssh_free_packet(st->pktin); - crStop(NULL); - } - } - st->pktin->maxlen = st->packetlen + st->maclen; - st->pktin->data = sresize(st->pktin->data, - st->pktin->maxlen + APIEXTRA, - unsigned char); - } else { - st->pktin->data = snewn(st->cipherblk + APIEXTRA, unsigned char); - - /* - * Acquire and decrypt the first block of the packet. This will - * contain the length and padding details. - */ - for (st->i = st->len = 0; st->i < st->cipherblk; st->i++) { - while ((*datalen) == 0) - crReturn(NULL); - st->pktin->data[st->i] = *(*data)++; - (*datalen)--; - } - - if (ssh->sccipher) - ssh->sccipher->decrypt(ssh->sc_cipher_ctx, - st->pktin->data, st->cipherblk); - - /* - * Now get the length figure. - */ - st->len = GET_32BIT(st->pktin->data); - - /* - * _Completely_ silly lengths should be stomped on before they - * do us any more damage. - */ - if (st->len < 0 || st->len > OUR_V2_PACKETLIMIT || - (st->len + 4) % st->cipherblk != 0) { - bombout(("Incoming packet was garbled on decryption")); - ssh_free_packet(st->pktin); - crStop(NULL); - } - - /* - * So now we can work out the total packet length. - */ - st->packetlen = st->len + 4; - - /* - * Allocate memory for the rest of the packet. - */ - st->pktin->maxlen = st->packetlen + st->maclen; - st->pktin->data = sresize(st->pktin->data, - st->pktin->maxlen + APIEXTRA, - unsigned char); - - /* - * Read and decrypt the remainder of the packet. - */ - for (st->i = st->cipherblk; st->i < st->packetlen + st->maclen; - st->i++) { - while ((*datalen) == 0) - crReturn(NULL); - st->pktin->data[st->i] = *(*data)++; - (*datalen)--; - } - /* Decrypt everything _except_ the MAC. */ - if (ssh->sccipher) - ssh->sccipher->decrypt(ssh->sc_cipher_ctx, - st->pktin->data + st->cipherblk, - st->packetlen - st->cipherblk); - - /* - * Check the MAC. - */ - if (ssh->scmac - && !ssh->scmac->verify(ssh->sc_mac_ctx, st->pktin->data, - st->len + 4, st->incoming_sequence)) { - bombout(("Incorrect MAC received on packet")); - ssh_free_packet(st->pktin); - crStop(NULL); - } - } - /* Get and sanity-check the amount of random padding. */ - st->pad = st->pktin->data[4]; - if (st->pad < 4 || st->len - st->pad < 1) { - bombout(("Invalid padding length on received packet")); - ssh_free_packet(st->pktin); - crStop(NULL); - } - /* - * This enables us to deduce the payload length. - */ - st->payload = st->len - st->pad - 1; - - st->pktin->length = st->payload + 5; - st->pktin->encrypted_len = st->packetlen; - - st->pktin->sequence = st->incoming_sequence++; - - /* - * Decompress packet payload. - */ - { - unsigned char *newpayload; - int newlen; - if (ssh->sccomp && - ssh->sccomp->decompress(ssh->sc_comp_ctx, - st->pktin->data + 5, st->pktin->length - 5, - &newpayload, &newlen)) { - if (st->pktin->maxlen < newlen + 5) { - st->pktin->maxlen = newlen + 5; - st->pktin->data = sresize(st->pktin->data, - st->pktin->maxlen + APIEXTRA, - unsigned char); - } - st->pktin->length = 5 + newlen; - memcpy(st->pktin->data + 5, newpayload, newlen); - sfree(newpayload); - } - } - - st->pktin->savedpos = 6; - st->pktin->body = st->pktin->data; - st->pktin->type = st->pktin->data[5]; - - /* - * Log incoming packet, possibly omitting sensitive fields. - */ - if (ssh->logctx) { - int nblanks = 0; - struct logblank_t blank; - if (ssh->cfg.logomitdata) { - int do_blank = FALSE, blank_prefix = 0; - /* "Session data" packets - omit the data field */ - if (st->pktin->type == SSH2_MSG_CHANNEL_DATA) { - do_blank = TRUE; blank_prefix = 8; - } else if (st->pktin->type == SSH2_MSG_CHANNEL_EXTENDED_DATA) { - do_blank = TRUE; blank_prefix = 12; - } - if (do_blank) { - blank.offset = blank_prefix; - blank.len = (st->pktin->length-6) - blank_prefix; - blank.type = PKTLOG_OMIT; - nblanks = 1; - } - } - log_packet(ssh->logctx, PKT_INCOMING, st->pktin->type, - ssh2_pkt_type(ssh->pkt_kctx, ssh->pkt_actx, - st->pktin->type), - st->pktin->data+6, st->pktin->length-6, - nblanks, &blank, &st->pktin->sequence); - } - - crFinish(st->pktin); -} - -static int s_wrpkt_prepare(Ssh ssh, struct Packet *pkt, int *offset_p) -{ - int pad, biglen, i, pktoffs; - unsigned long crc; -#ifdef __SC__ - /* - * XXX various versions of SC (including 8.8.4) screw up the - * register allocation in this function and use the same register - * (D6) for len and as a temporary, with predictable results. The - * following sledgehammer prevents this. - */ - volatile -#endif - int len; - - if (ssh->logctx) - log_packet(ssh->logctx, PKT_OUTGOING, pkt->data[12], - ssh1_pkt_type(pkt->data[12]), - pkt->body, pkt->length - (pkt->body - pkt->data), - pkt->nblanks, pkt->blanks, NULL); - sfree(pkt->blanks); pkt->blanks = NULL; - pkt->nblanks = 0; - - if (ssh->v1_compressing) { - unsigned char *compblk; - int complen; - zlib_compress_block(ssh->cs_comp_ctx, - pkt->data + 12, pkt->length - 12, - &compblk, &complen); - ssh_pkt_ensure(pkt, complen + 2); /* just in case it's got bigger */ - memcpy(pkt->data + 12, compblk, complen); - sfree(compblk); - pkt->length = complen + 12; - } - - ssh_pkt_ensure(pkt, pkt->length + 4); /* space for CRC */ - pkt->length += 4; - len = pkt->length - 4 - 8; /* len(type+data+CRC) */ - pad = 8 - (len % 8); - pktoffs = 8 - pad; - biglen = len + pad; /* len(padding+type+data+CRC) */ - - for (i = pktoffs; i < 4+8; i++) - pkt->data[i] = random_byte(); - crc = crc32_compute(pkt->data + pktoffs + 4, biglen - 4); /* all ex len */ - PUT_32BIT(pkt->data + pktoffs + 4 + biglen - 4, crc); - PUT_32BIT(pkt->data + pktoffs, len); - - if (ssh->cipher) - ssh->cipher->encrypt(ssh->v1_cipher_ctx, - pkt->data + pktoffs + 4, biglen); - - if (offset_p) *offset_p = pktoffs; - return biglen + 4; /* len(length+padding+type+data+CRC) */ -} - -static int s_write(Ssh ssh, void *data, int len) -{ - if (ssh->logctx) - log_packet(ssh->logctx, PKT_OUTGOING, -1, NULL, data, len, - 0, NULL, NULL); - return sk_write(ssh->s, (char *)data, len); -} - -static void s_wrpkt(Ssh ssh, struct Packet *pkt) -{ - int len, backlog, offset; - len = s_wrpkt_prepare(ssh, pkt, &offset); - backlog = s_write(ssh, pkt->data + offset, len); - if (backlog > SSH_MAX_BACKLOG) - ssh_throttle_all(ssh, 1, backlog); - ssh_free_packet(pkt); -} - -static void s_wrpkt_defer(Ssh ssh, struct Packet *pkt) -{ - int len, offset; - len = s_wrpkt_prepare(ssh, pkt, &offset); - if (ssh->deferred_len + len > ssh->deferred_size) { - ssh->deferred_size = ssh->deferred_len + len + 128; - ssh->deferred_send_data = sresize(ssh->deferred_send_data, - ssh->deferred_size, - unsigned char); - } - memcpy(ssh->deferred_send_data + ssh->deferred_len, - pkt->data + offset, len); - ssh->deferred_len += len; - ssh_free_packet(pkt); -} - -/* - * Construct a SSH-1 packet with the specified contents. - * (This all-at-once interface used to be the only one, but now SSH-1 - * packets can also be constructed incrementally.) - */ -static struct Packet *construct_packet(Ssh ssh, int pkttype, va_list ap) -{ - int argtype; - Bignum bn; - struct Packet *pkt; - - pkt = ssh1_pkt_init(pkttype); - - while ((argtype = va_arg(ap, int)) != PKT_END) { - unsigned char *argp, argchar; - char *sargp; - unsigned long argint; - int arglen; - switch (argtype) { - /* Actual fields in the packet */ - case PKT_INT: - argint = va_arg(ap, int); - ssh_pkt_adduint32(pkt, argint); - break; - case PKT_CHAR: - argchar = (unsigned char) va_arg(ap, int); - ssh_pkt_addbyte(pkt, argchar); - break; - case PKT_DATA: - argp = va_arg(ap, unsigned char *); - arglen = va_arg(ap, int); - ssh_pkt_adddata(pkt, argp, arglen); - break; - case PKT_STR: - sargp = va_arg(ap, char *); - ssh_pkt_addstring(pkt, sargp); - break; - case PKT_BIGNUM: - bn = va_arg(ap, Bignum); - ssh1_pkt_addmp(pkt, bn); - break; - /* Tokens for modifications to packet logging */ - case PKTT_PASSWORD: - dont_log_password(ssh, pkt, PKTLOG_BLANK); - break; - case PKTT_DATA: - dont_log_data(ssh, pkt, PKTLOG_OMIT); - break; - case PKTT_OTHER: - end_log_omission(ssh, pkt); - break; - } - } - - return pkt; -} - -static void send_packet(Ssh ssh, int pkttype, ...) -{ - struct Packet *pkt; - va_list ap; - va_start(ap, pkttype); - pkt = construct_packet(ssh, pkttype, ap); - va_end(ap); - s_wrpkt(ssh, pkt); -} - -static void defer_packet(Ssh ssh, int pkttype, ...) -{ - struct Packet *pkt; - va_list ap; - va_start(ap, pkttype); - pkt = construct_packet(ssh, pkttype, ap); - va_end(ap); - s_wrpkt_defer(ssh, pkt); -} - -static int ssh_versioncmp(char *a, char *b) -{ - char *ae, *be; - unsigned long av, bv; - - av = strtoul(a, &ae, 10); - bv = strtoul(b, &be, 10); - if (av != bv) - return (av < bv ? -1 : +1); - if (*ae == '.') - ae++; - if (*be == '.') - be++; - av = strtoul(ae, &ae, 10); - bv = strtoul(be, &be, 10); - if (av != bv) - return (av < bv ? -1 : +1); - return 0; -} - -/* - * Utility routines for putting an SSH-protocol `string' and - * `uint32' into a hash state. - */ -static void hash_string(const struct ssh_hash *h, void *s, void *str, int len) -{ - unsigned char lenblk[4]; - PUT_32BIT(lenblk, len); - h->bytes(s, lenblk, 4); - h->bytes(s, str, len); -} - -static void hash_uint32(const struct ssh_hash *h, void *s, unsigned i) -{ - unsigned char intblk[4]; - PUT_32BIT(intblk, i); - h->bytes(s, intblk, 4); -} - -/* - * Packet construction functions. Mostly shared between SSH-1 and SSH-2. - */ -static void ssh_pkt_ensure(struct Packet *pkt, int length) -{ - if (pkt->maxlen < length) { - unsigned char *body = pkt->body; - int offset = body ? body - pkt->data : 0; - pkt->maxlen = length + 256; - pkt->data = sresize(pkt->data, pkt->maxlen + APIEXTRA, unsigned char); - if (body) pkt->body = pkt->data + offset; - } -} -static void ssh_pkt_adddata(struct Packet *pkt, void *data, int len) -{ - if (pkt->logmode != PKTLOG_EMIT) { - pkt->nblanks++; - pkt->blanks = sresize(pkt->blanks, pkt->nblanks, struct logblank_t); - assert(pkt->body); - pkt->blanks[pkt->nblanks-1].offset = pkt->length - - (pkt->body - pkt->data); - pkt->blanks[pkt->nblanks-1].len = len; - pkt->blanks[pkt->nblanks-1].type = pkt->logmode; - } - pkt->length += len; - ssh_pkt_ensure(pkt, pkt->length); - memcpy(pkt->data + pkt->length - len, data, len); -} -static void ssh_pkt_addbyte(struct Packet *pkt, unsigned char byte) -{ - ssh_pkt_adddata(pkt, &byte, 1); -} -static void ssh2_pkt_addbool(struct Packet *pkt, unsigned char value) -{ - ssh_pkt_adddata(pkt, &value, 1); -} -static void ssh_pkt_adduint32(struct Packet *pkt, unsigned long value) -{ - unsigned char x[4]; - PUT_32BIT(x, value); - ssh_pkt_adddata(pkt, x, 4); -} -static void ssh_pkt_addstring_start(struct Packet *pkt) -{ - ssh_pkt_adduint32(pkt, 0); - pkt->savedpos = pkt->length; -} -static void ssh_pkt_addstring_str(struct Packet *pkt, char *data) -{ - ssh_pkt_adddata(pkt, data, strlen(data)); - PUT_32BIT(pkt->data + pkt->savedpos - 4, pkt->length - pkt->savedpos); -} -static void ssh_pkt_addstring_data(struct Packet *pkt, char *data, int len) -{ - ssh_pkt_adddata(pkt, data, len); - PUT_32BIT(pkt->data + pkt->savedpos - 4, pkt->length - pkt->savedpos); -} -static void ssh_pkt_addstring(struct Packet *pkt, char *data) -{ - ssh_pkt_addstring_start(pkt); - ssh_pkt_addstring_str(pkt, data); -} -static void ssh1_pkt_addmp(struct Packet *pkt, Bignum b) -{ - int len = ssh1_bignum_length(b); - unsigned char *data = snewn(len, unsigned char); - (void) ssh1_write_bignum(data, b); - ssh_pkt_adddata(pkt, data, len); - sfree(data); -} -static unsigned char *ssh2_mpint_fmt(Bignum b, int *len) -{ - unsigned char *p; - int i, n = (bignum_bitcount(b) + 7) / 8; - p = snewn(n + 1, unsigned char); - p[0] = 0; - for (i = 1; i <= n; i++) - p[i] = bignum_byte(b, n - i); - i = 0; - while (i <= n && p[i] == 0 && (p[i + 1] & 0x80) == 0) - i++; - memmove(p, p + i, n + 1 - i); - *len = n + 1 - i; - return p; -} -static void ssh2_pkt_addmp(struct Packet *pkt, Bignum b) -{ - unsigned char *p; - int len; - p = ssh2_mpint_fmt(b, &len); - ssh_pkt_addstring_start(pkt); - ssh_pkt_addstring_data(pkt, (char *)p, len); - sfree(p); -} - -static struct Packet *ssh1_pkt_init(int pkt_type) -{ - struct Packet *pkt = ssh_new_packet(); - pkt->length = 4 + 8; /* space for length + max padding */ - ssh_pkt_addbyte(pkt, pkt_type); - pkt->body = pkt->data + pkt->length; - return pkt; -} - -/* For legacy code (SSH-1 and -2 packet construction used to be separate) */ -#define ssh2_pkt_ensure(pkt, length) ssh_pkt_ensure(pkt, length) -#define ssh2_pkt_adddata(pkt, data, len) ssh_pkt_adddata(pkt, data, len) -#define ssh2_pkt_addbyte(pkt, byte) ssh_pkt_addbyte(pkt, byte) -#define ssh2_pkt_adduint32(pkt, value) ssh_pkt_adduint32(pkt, value) -#define ssh2_pkt_addstring_start(pkt) ssh_pkt_addstring_start(pkt) -#define ssh2_pkt_addstring_str(pkt, data) ssh_pkt_addstring_str(pkt, data) -#define ssh2_pkt_addstring_data(pkt, data, len) ssh_pkt_addstring_data(pkt, data, len) -#define ssh2_pkt_addstring(pkt, data) ssh_pkt_addstring(pkt, data) - -static struct Packet *ssh2_pkt_init(int pkt_type) -{ - struct Packet *pkt = ssh_new_packet(); - pkt->length = 5; /* space for packet length + padding length */ - pkt->forcepad = 0; - ssh_pkt_addbyte(pkt, (unsigned char) pkt_type); - pkt->body = pkt->data + pkt->length; /* after packet type */ - return pkt; -} - -/* - * Construct an SSH-2 final-form packet: compress it, encrypt it, - * put the MAC on it. Final packet, ready to be sent, is stored in - * pkt->data. Total length is returned. - */ -static int ssh2_pkt_construct(Ssh ssh, struct Packet *pkt) -{ - int cipherblk, maclen, padding, i; - - if (ssh->logctx) - log_packet(ssh->logctx, PKT_OUTGOING, pkt->data[5], - ssh2_pkt_type(ssh->pkt_kctx, ssh->pkt_actx, pkt->data[5]), - pkt->body, pkt->length - (pkt->body - pkt->data), - pkt->nblanks, pkt->blanks, &ssh->v2_outgoing_sequence); - sfree(pkt->blanks); pkt->blanks = NULL; - pkt->nblanks = 0; - - /* - * Compress packet payload. - */ - { - unsigned char *newpayload; - int newlen; - if (ssh->cscomp && - ssh->cscomp->compress(ssh->cs_comp_ctx, pkt->data + 5, - pkt->length - 5, - &newpayload, &newlen)) { - pkt->length = 5; - ssh2_pkt_adddata(pkt, newpayload, newlen); - sfree(newpayload); - } - } - - /* - * Add padding. At least four bytes, and must also bring total - * length (minus MAC) up to a multiple of the block size. - * If pkt->forcepad is set, make sure the packet is at least that size - * after padding. - */ - cipherblk = ssh->cscipher ? ssh->cscipher->blksize : 8; /* block size */ - cipherblk = cipherblk < 8 ? 8 : cipherblk; /* or 8 if blksize < 8 */ - padding = 4; - if (pkt->length + padding < pkt->forcepad) - padding = pkt->forcepad - pkt->length; - padding += - (cipherblk - (pkt->length + padding) % cipherblk) % cipherblk; - assert(padding <= 255); - maclen = ssh->csmac ? ssh->csmac->len : 0; - ssh2_pkt_ensure(pkt, pkt->length + padding + maclen); - pkt->data[4] = padding; - for (i = 0; i < padding; i++) - pkt->data[pkt->length + i] = random_byte(); - PUT_32BIT(pkt->data, pkt->length + padding - 4); - if (ssh->csmac) - ssh->csmac->generate(ssh->cs_mac_ctx, pkt->data, - pkt->length + padding, - ssh->v2_outgoing_sequence); - ssh->v2_outgoing_sequence++; /* whether or not we MACed */ - - if (ssh->cscipher) - ssh->cscipher->encrypt(ssh->cs_cipher_ctx, - pkt->data, pkt->length + padding); - - pkt->encrypted_len = pkt->length + padding; - - /* Ready-to-send packet starts at pkt->data. We return length. */ - return pkt->length + padding + maclen; -} - -/* - * Routines called from the main SSH code to send packets. There - * are quite a few of these, because we have two separate - * mechanisms for delaying the sending of packets: - * - * - In order to send an IGNORE message and a password message in - * a single fixed-length blob, we require the ability to - * concatenate the encrypted forms of those two packets _into_ a - * single blob and then pass it to our transport - * layer in one go. Hence, there's a deferment mechanism which - * works after packet encryption. - * - * - In order to avoid sending any connection-layer messages - * during repeat key exchange, we have to queue up any such - * outgoing messages _before_ they are encrypted (and in - * particular before they're allocated sequence numbers), and - * then send them once we've finished. - * - * I call these mechanisms `defer' and `queue' respectively, so as - * to distinguish them reasonably easily. - * - * The functions send_noqueue() and defer_noqueue() free the packet - * structure they are passed. Every outgoing packet goes through - * precisely one of these functions in its life; packets passed to - * ssh2_pkt_send() or ssh2_pkt_defer() either go straight to one of - * these or get queued, and then when the queue is later emptied - * the packets are all passed to defer_noqueue(). - * - * When using a CBC-mode cipher, it's necessary to ensure that an - * attacker can't provide data to be encrypted using an IV that they - * know. We ensure this by prefixing each packet that might contain - * user data with an SSH_MSG_IGNORE. This is done using the deferral - * mechanism, so in this case send_noqueue() ends up redirecting to - * defer_noqueue(). If you don't like this inefficiency, don't use - * CBC. - */ - -static void ssh2_pkt_defer_noqueue(Ssh, struct Packet *, int); -static void ssh_pkt_defersend(Ssh); - -/* - * Send an SSH-2 packet immediately, without queuing or deferring. - */ -static void ssh2_pkt_send_noqueue(Ssh ssh, struct Packet *pkt) -{ - int len; - int backlog; - if (ssh->cscipher != NULL && (ssh->cscipher->flags & SSH_CIPHER_IS_CBC)) { - /* We need to send two packets, so use the deferral mechanism. */ - ssh2_pkt_defer_noqueue(ssh, pkt, FALSE); - ssh_pkt_defersend(ssh); - return; - } - len = ssh2_pkt_construct(ssh, pkt); - backlog = s_write(ssh, pkt->data, len); - if (backlog > SSH_MAX_BACKLOG) - ssh_throttle_all(ssh, 1, backlog); - - ssh->outgoing_data_size += pkt->encrypted_len; - if (!ssh->kex_in_progress && - ssh->max_data_size != 0 && - ssh->outgoing_data_size > ssh->max_data_size) - do_ssh2_transport(ssh, "too much data sent", -1, NULL); - - ssh_free_packet(pkt); -} - -/* - * Defer an SSH-2 packet. - */ -static void ssh2_pkt_defer_noqueue(Ssh ssh, struct Packet *pkt, int noignore) -{ - int len; - if (ssh->cscipher != NULL && (ssh->cscipher->flags & SSH_CIPHER_IS_CBC) && - ssh->deferred_len == 0 && !noignore) { - /* - * Interpose an SSH_MSG_IGNORE to ensure that user data don't - * get encrypted with a known IV. - */ - struct Packet *ipkt = ssh2_pkt_init(SSH2_MSG_IGNORE); - ssh2_pkt_addstring_start(ipkt); - ssh2_pkt_defer_noqueue(ssh, ipkt, TRUE); - } - len = ssh2_pkt_construct(ssh, pkt); - if (ssh->deferred_len + len > ssh->deferred_size) { - ssh->deferred_size = ssh->deferred_len + len + 128; - ssh->deferred_send_data = sresize(ssh->deferred_send_data, - ssh->deferred_size, - unsigned char); - } - memcpy(ssh->deferred_send_data + ssh->deferred_len, pkt->data, len); - ssh->deferred_len += len; - ssh->deferred_data_size += pkt->encrypted_len; - ssh_free_packet(pkt); -} - -/* - * Queue an SSH-2 packet. - */ -static void ssh2_pkt_queue(Ssh ssh, struct Packet *pkt) -{ - assert(ssh->queueing); - - if (ssh->queuelen >= ssh->queuesize) { - ssh->queuesize = ssh->queuelen + 32; - ssh->queue = sresize(ssh->queue, ssh->queuesize, struct Packet *); - } - - ssh->queue[ssh->queuelen++] = pkt; -} - -/* - * Either queue or send a packet, depending on whether queueing is - * set. - */ -static void ssh2_pkt_send(Ssh ssh, struct Packet *pkt) -{ - if (ssh->queueing) - ssh2_pkt_queue(ssh, pkt); - else - ssh2_pkt_send_noqueue(ssh, pkt); -} - -/* - * Either queue or defer a packet, depending on whether queueing is - * set. - */ -static void ssh2_pkt_defer(Ssh ssh, struct Packet *pkt) -{ - if (ssh->queueing) - ssh2_pkt_queue(ssh, pkt); - else - ssh2_pkt_defer_noqueue(ssh, pkt, FALSE); -} - -/* - * Send the whole deferred data block constructed by - * ssh2_pkt_defer() or SSH-1's defer_packet(). - * - * The expected use of the defer mechanism is that you call - * ssh2_pkt_defer() a few times, then call ssh_pkt_defersend(). If - * not currently queueing, this simply sets up deferred_send_data - * and then sends it. If we _are_ currently queueing, the calls to - * ssh2_pkt_defer() put the deferred packets on to the queue - * instead, and therefore ssh_pkt_defersend() has no deferred data - * to send. Hence, there's no need to make it conditional on - * ssh->queueing. - */ -static void ssh_pkt_defersend(Ssh ssh) -{ - int backlog; - backlog = s_write(ssh, ssh->deferred_send_data, ssh->deferred_len); - ssh->deferred_len = ssh->deferred_size = 0; - sfree(ssh->deferred_send_data); - ssh->deferred_send_data = NULL; - if (backlog > SSH_MAX_BACKLOG) - ssh_throttle_all(ssh, 1, backlog); - - ssh->outgoing_data_size += ssh->deferred_data_size; - if (!ssh->kex_in_progress && - ssh->max_data_size != 0 && - ssh->outgoing_data_size > ssh->max_data_size) - do_ssh2_transport(ssh, "too much data sent", -1, NULL); - ssh->deferred_data_size = 0; -} - -/* - * Send a packet whose length needs to be disguised (typically - * passwords or keyboard-interactive responses). - */ -static void ssh2_pkt_send_with_padding(Ssh ssh, struct Packet *pkt, - int padsize) -{ -#if 0 - if (0) { - /* - * The simplest way to do this is to adjust the - * variable-length padding field in the outgoing packet. - * - * Currently compiled out, because some Cisco SSH servers - * don't like excessively padded packets (bah, why's it - * always Cisco?) - */ - pkt->forcepad = padsize; - ssh2_pkt_send(ssh, pkt); - } else -#endif - { - /* - * If we can't do that, however, an alternative approach is - * to use the pkt_defer mechanism to bundle the packet - * tightly together with an SSH_MSG_IGNORE such that their - * combined length is a constant. So first we construct the - * final form of this packet and defer its sending. - */ - ssh2_pkt_defer(ssh, pkt); - - /* - * Now construct an SSH_MSG_IGNORE which includes a string - * that's an exact multiple of the cipher block size. (If - * the cipher is NULL so that the block size is - * unavailable, we don't do this trick at all, because we - * gain nothing by it.) - */ - if (ssh->cscipher) { - int stringlen, i; - - stringlen = (256 - ssh->deferred_len); - stringlen += ssh->cscipher->blksize - 1; - stringlen -= (stringlen % ssh->cscipher->blksize); - if (ssh->cscomp) { - /* - * Temporarily disable actual compression, so we - * can guarantee to get this string exactly the - * length we want it. The compression-disabling - * routine should return an integer indicating how - * many bytes we should adjust our string length - * by. - */ - stringlen -= - ssh->cscomp->disable_compression(ssh->cs_comp_ctx); - } - pkt = ssh2_pkt_init(SSH2_MSG_IGNORE); - ssh2_pkt_addstring_start(pkt); - for (i = 0; i < stringlen; i++) { - char c = (char) random_byte(); - ssh2_pkt_addstring_data(pkt, &c, 1); - } - ssh2_pkt_defer(ssh, pkt); - } - ssh_pkt_defersend(ssh); - } -} - -/* - * Send all queued SSH-2 packets. We send them by means of - * ssh2_pkt_defer_noqueue(), in case they included a pair of - * packets that needed to be lumped together. - */ -static void ssh2_pkt_queuesend(Ssh ssh) -{ - int i; - - assert(!ssh->queueing); - - for (i = 0; i < ssh->queuelen; i++) - ssh2_pkt_defer_noqueue(ssh, ssh->queue[i], FALSE); - ssh->queuelen = 0; - - ssh_pkt_defersend(ssh); -} - -#if 0 -void bndebug(char *string, Bignum b) -{ - unsigned char *p; - int i, len; - p = ssh2_mpint_fmt(b, &len); - debug(("%s", string)); - for (i = 0; i < len; i++) - debug((" %02x", p[i])); - debug(("\n")); - sfree(p); -} -#endif - -static void hash_mpint(const struct ssh_hash *h, void *s, Bignum b) -{ - unsigned char *p; - int len; - p = ssh2_mpint_fmt(b, &len); - hash_string(h, s, p, len); - sfree(p); -} - -/* - * Packet decode functions for both SSH-1 and SSH-2. - */ -static unsigned long ssh_pkt_getuint32(struct Packet *pkt) -{ - unsigned long value; - if (pkt->length - pkt->savedpos < 4) - return 0; /* arrgh, no way to decline (FIXME?) */ - value = GET_32BIT(pkt->body + pkt->savedpos); - pkt->savedpos += 4; - return value; -} -static int ssh2_pkt_getbool(struct Packet *pkt) -{ - unsigned long value; - if (pkt->length - pkt->savedpos < 1) - return 0; /* arrgh, no way to decline (FIXME?) */ - value = pkt->body[pkt->savedpos] != 0; - pkt->savedpos++; - return value; -} -static void ssh_pkt_getstring(struct Packet *pkt, char **p, int *length) -{ - int len; - *p = NULL; - *length = 0; - if (pkt->length - pkt->savedpos < 4) - return; - len = GET_32BIT(pkt->body + pkt->savedpos); - if (len < 0) - return; - *length = len; - pkt->savedpos += 4; - if (pkt->length - pkt->savedpos < *length) - return; - *p = (char *)(pkt->body + pkt->savedpos); - pkt->savedpos += *length; -} -static void *ssh_pkt_getdata(struct Packet *pkt, int length) -{ - if (pkt->length - pkt->savedpos < length) - return NULL; - pkt->savedpos += length; - return pkt->body + (pkt->savedpos - length); -} -static int ssh1_pkt_getrsakey(struct Packet *pkt, struct RSAKey *key, - unsigned char **keystr) -{ - int j; - - j = makekey(pkt->body + pkt->savedpos, - pkt->length - pkt->savedpos, - key, keystr, 0); - - if (j < 0) - return FALSE; - - pkt->savedpos += j; - assert(pkt->savedpos < pkt->length); - - return TRUE; -} -static Bignum ssh1_pkt_getmp(struct Packet *pkt) -{ - int j; - Bignum b; - - j = ssh1_read_bignum(pkt->body + pkt->savedpos, - pkt->length - pkt->savedpos, &b); - - if (j < 0) - return NULL; - - pkt->savedpos += j; - return b; -} -static Bignum ssh2_pkt_getmp(struct Packet *pkt) -{ - char *p; - int length; - Bignum b; - - ssh_pkt_getstring(pkt, &p, &length); - if (!p) - return NULL; - if (p[0] & 0x80) - return NULL; - b = bignum_from_bytes((unsigned char *)p, length); - return b; -} - -/* - * Helper function to add an SSH-2 signature blob to a packet. - * Expects to be shown the public key blob as well as the signature - * blob. Normally works just like ssh2_pkt_addstring, but will - * fiddle with the signature packet if necessary for - * BUG_SSH2_RSA_PADDING. - */ -static void ssh2_add_sigblob(Ssh ssh, struct Packet *pkt, - void *pkblob_v, int pkblob_len, - void *sigblob_v, int sigblob_len) -{ - unsigned char *pkblob = (unsigned char *)pkblob_v; - unsigned char *sigblob = (unsigned char *)sigblob_v; - - /* dmemdump(pkblob, pkblob_len); */ - /* dmemdump(sigblob, sigblob_len); */ - - /* - * See if this is in fact an ssh-rsa signature and a buggy - * server; otherwise we can just do this the easy way. - */ - if ((ssh->remote_bugs & BUG_SSH2_RSA_PADDING) && - (GET_32BIT(pkblob) == 7 && !memcmp(pkblob+4, "ssh-rsa", 7))) { - int pos, len, siglen; - - /* - * Find the byte length of the modulus. - */ - - pos = 4+7; /* skip over "ssh-rsa" */ - pos += 4 + GET_32BIT(pkblob+pos); /* skip over exponent */ - len = GET_32BIT(pkblob+pos); /* find length of modulus */ - pos += 4; /* find modulus itself */ - while (len > 0 && pkblob[pos] == 0) - len--, pos++; - /* debug(("modulus length is %d\n", len)); */ - - /* - * Now find the signature integer. - */ - pos = 4+7; /* skip over "ssh-rsa" */ - siglen = GET_32BIT(sigblob+pos); - /* debug(("signature length is %d\n", siglen)); */ - - if (len != siglen) { - unsigned char newlen[4]; - ssh2_pkt_addstring_start(pkt); - ssh2_pkt_addstring_data(pkt, (char *)sigblob, pos); - /* dmemdump(sigblob, pos); */ - pos += 4; /* point to start of actual sig */ - PUT_32BIT(newlen, len); - ssh2_pkt_addstring_data(pkt, (char *)newlen, 4); - /* dmemdump(newlen, 4); */ - newlen[0] = 0; - while (len-- > siglen) { - ssh2_pkt_addstring_data(pkt, (char *)newlen, 1); - /* dmemdump(newlen, 1); */ - } - ssh2_pkt_addstring_data(pkt, (char *)(sigblob+pos), siglen); - /* dmemdump(sigblob+pos, siglen); */ - return; - } - - /* Otherwise fall through and do it the easy way. */ - } - - ssh2_pkt_addstring_start(pkt); - ssh2_pkt_addstring_data(pkt, (char *)sigblob, sigblob_len); -} - -/* - * Examine the remote side's version string and compare it against - * a list of known buggy implementations. - */ -static void ssh_detect_bugs(Ssh ssh, char *vstring) -{ - char *imp; /* pointer to implementation part */ - imp = vstring; - imp += strcspn(imp, "-"); - if (*imp) imp++; - imp += strcspn(imp, "-"); - if (*imp) imp++; - - ssh->remote_bugs = 0; - - /* - * General notes on server version strings: - * - Not all servers reporting "Cisco-1.25" have all the bugs listed - * here -- in particular, we've heard of one that's perfectly happy - * with SSH1_MSG_IGNOREs -- but this string never seems to change, - * so we can't distinguish them. - */ - if (ssh->cfg.sshbug_ignore1 == FORCE_ON || - (ssh->cfg.sshbug_ignore1 == AUTO && - (!strcmp(imp, "1.2.18") || !strcmp(imp, "1.2.19") || - !strcmp(imp, "1.2.20") || !strcmp(imp, "1.2.21") || - !strcmp(imp, "1.2.22") || !strcmp(imp, "Cisco-1.25") || - !strcmp(imp, "OSU_1.4alpha3") || !strcmp(imp, "OSU_1.5alpha4")))) { - /* - * These versions don't support SSH1_MSG_IGNORE, so we have - * to use a different defence against password length - * sniffing. - */ - ssh->remote_bugs |= BUG_CHOKES_ON_SSH1_IGNORE; - logevent("We believe remote version has SSH-1 ignore bug"); - } - - if (ssh->cfg.sshbug_plainpw1 == FORCE_ON || - (ssh->cfg.sshbug_plainpw1 == AUTO && - (!strcmp(imp, "Cisco-1.25") || !strcmp(imp, "OSU_1.4alpha3")))) { - /* - * These versions need a plain password sent; they can't - * handle having a null and a random length of data after - * the password. - */ - ssh->remote_bugs |= BUG_NEEDS_SSH1_PLAIN_PASSWORD; - logevent("We believe remote version needs a plain SSH-1 password"); - } - - if (ssh->cfg.sshbug_rsa1 == FORCE_ON || - (ssh->cfg.sshbug_rsa1 == AUTO && - (!strcmp(imp, "Cisco-1.25")))) { - /* - * These versions apparently have no clue whatever about - * RSA authentication and will panic and die if they see - * an AUTH_RSA message. - */ - ssh->remote_bugs |= BUG_CHOKES_ON_RSA; - logevent("We believe remote version can't handle SSH-1 RSA authentication"); - } - - if (ssh->cfg.sshbug_hmac2 == FORCE_ON || - (ssh->cfg.sshbug_hmac2 == AUTO && - !wc_match("* VShell", imp) && - (wc_match("2.1.0*", imp) || wc_match("2.0.*", imp) || - wc_match("2.2.0*", imp) || wc_match("2.3.0*", imp) || - wc_match("2.1 *", imp)))) { - /* - * These versions have the HMAC bug. - */ - ssh->remote_bugs |= BUG_SSH2_HMAC; - logevent("We believe remote version has SSH-2 HMAC bug"); - } - - if (ssh->cfg.sshbug_derivekey2 == FORCE_ON || - (ssh->cfg.sshbug_derivekey2 == AUTO && - !wc_match("* VShell", imp) && - (wc_match("2.0.0*", imp) || wc_match("2.0.10*", imp) ))) { - /* - * These versions have the key-derivation bug (failing to - * include the literal shared secret in the hashes that - * generate the keys). - */ - ssh->remote_bugs |= BUG_SSH2_DERIVEKEY; - logevent("We believe remote version has SSH-2 key-derivation bug"); - } - - if (ssh->cfg.sshbug_rsapad2 == FORCE_ON || - (ssh->cfg.sshbug_rsapad2 == AUTO && - (wc_match("OpenSSH_2.[5-9]*", imp) || - wc_match("OpenSSH_3.[0-2]*", imp)))) { - /* - * These versions have the SSH-2 RSA padding bug. - */ - ssh->remote_bugs |= BUG_SSH2_RSA_PADDING; - logevent("We believe remote version has SSH-2 RSA padding bug"); - } - - if (ssh->cfg.sshbug_pksessid2 == FORCE_ON || - (ssh->cfg.sshbug_pksessid2 == AUTO && - wc_match("OpenSSH_2.[0-2]*", imp))) { - /* - * These versions have the SSH-2 session-ID bug in - * public-key authentication. - */ - ssh->remote_bugs |= BUG_SSH2_PK_SESSIONID; - logevent("We believe remote version has SSH-2 public-key-session-ID bug"); - } - - if (ssh->cfg.sshbug_rekey2 == FORCE_ON || - (ssh->cfg.sshbug_rekey2 == AUTO && - (wc_match("DigiSSH_2.0", imp) || - wc_match("OpenSSH_2.[0-4]*", imp) || - wc_match("OpenSSH_2.5.[0-3]*", imp) || - wc_match("Sun_SSH_1.0", imp) || - wc_match("Sun_SSH_1.0.1", imp) || - /* All versions <= 1.2.6 (they changed their format in 1.2.7) */ - wc_match("WeOnlyDo-*", imp)))) { - /* - * These versions have the SSH-2 rekey bug. - */ - ssh->remote_bugs |= BUG_SSH2_REKEY; - logevent("We believe remote version has SSH-2 rekey bug"); - } - - if (ssh->cfg.sshbug_maxpkt2 == FORCE_ON || - (ssh->cfg.sshbug_maxpkt2 == AUTO && - (wc_match("1.36_sshlib GlobalSCAPE", imp) || - wc_match("1.36 sshlib: GlobalScape", imp)))) { - /* - * This version ignores our makpkt and needs to be throttled. - */ - ssh->remote_bugs |= BUG_SSH2_MAXPKT; - logevent("We believe remote version ignores SSH-2 maximum packet size"); - } -} - -/* - * The `software version' part of an SSH version string is required - * to contain no spaces or minus signs. - */ -static void ssh_fix_verstring(char *str) -{ - /* Eat "SSH--". */ - assert(*str == 'S'); str++; - assert(*str == 'S'); str++; - assert(*str == 'H'); str++; - assert(*str == '-'); str++; - while (*str && *str != '-') str++; - assert(*str == '-'); str++; - - /* Convert minus signs and spaces in the remaining string into - * underscores. */ - while (*str) { - if (*str == '-' || *str == ' ') - *str = '_'; - str++; - } -} - -/* - * Send an appropriate SSH version string. - */ -static void ssh_send_verstring(Ssh ssh, char *svers) -{ - char *verstring; - - if (ssh->version == 2) { - /* - * Construct a v2 version string. - */ - verstring = dupprintf("SSH-2.0-%s\015\012", sshver); - } else { - /* - * Construct a v1 version string. - */ - verstring = dupprintf("SSH-%s-%s\012", - (ssh_versioncmp(svers, "1.5") <= 0 ? - svers : "1.5"), - sshver); - } - - ssh_fix_verstring(verstring); - - if (ssh->version == 2) { - size_t len; - /* - * Record our version string. - */ - len = strcspn(verstring, "\015\012"); - ssh->v_c = snewn(len + 1, char); - memcpy(ssh->v_c, verstring, len); - ssh->v_c[len] = 0; - } - - logeventf(ssh, "We claim version: %.*s", - strcspn(verstring, "\015\012"), verstring); - s_write(ssh, verstring, strlen(verstring)); - sfree(verstring); -} - -static int do_ssh_init(Ssh ssh, unsigned char c) -{ - struct do_ssh_init_state { - int vslen; - char version[10]; - char *vstring; - int vstrsize; - int i; - int proto1, proto2; - }; - crState(do_ssh_init_state); - - crBegin(ssh->do_ssh_init_crstate); - - /* Search for a line beginning with the string "SSH-" in the input. */ - for (;;) { - if (c != 'S') goto no; - crReturn(1); - if (c != 'S') goto no; - crReturn(1); - if (c != 'H') goto no; - crReturn(1); - if (c != '-') goto no; - break; - no: - while (c != '\012') - crReturn(1); - crReturn(1); - } - - s->vstrsize = 16; - s->vstring = snewn(s->vstrsize, char); - strcpy(s->vstring, "SSH-"); - s->vslen = 4; - s->i = 0; - while (1) { - crReturn(1); /* get another char */ - if (s->vslen >= s->vstrsize - 1) { - s->vstrsize += 16; - s->vstring = sresize(s->vstring, s->vstrsize, char); - } - s->vstring[s->vslen++] = c; - if (s->i >= 0) { - if (c == '-') { - s->version[s->i] = '\0'; - s->i = -1; - } else if (s->i < sizeof(s->version) - 1) - s->version[s->i++] = c; - } else if (c == '\012') - break; - } - - ssh->agentfwd_enabled = FALSE; - ssh->rdpkt2_state.incoming_sequence = 0; - - s->vstring[s->vslen] = 0; - s->vstring[strcspn(s->vstring, "\015\012")] = '\0';/* remove EOL chars */ - logeventf(ssh, "Server version: %s", s->vstring); - ssh_detect_bugs(ssh, s->vstring); - - /* - * Decide which SSH protocol version to support. - */ - - /* Anything strictly below "2.0" means protocol 1 is supported. */ - s->proto1 = ssh_versioncmp(s->version, "2.0") < 0; - /* Anything greater or equal to "1.99" means protocol 2 is supported. */ - s->proto2 = ssh_versioncmp(s->version, "1.99") >= 0; - - if (ssh->cfg.sshprot == 0 && !s->proto1) { - bombout(("SSH protocol version 1 required by user but not provided by server")); - crStop(0); - } - if (ssh->cfg.sshprot == 3 && !s->proto2) { - bombout(("SSH protocol version 2 required by user but not provided by server")); - crStop(0); - } - - if (s->proto2 && (ssh->cfg.sshprot >= 2 || !s->proto1)) - ssh->version = 2; - else - ssh->version = 1; - - logeventf(ssh, "Using SSH protocol version %d", ssh->version); - - /* Send the version string, if we haven't already */ - if (ssh->cfg.sshprot != 3) - ssh_send_verstring(ssh, s->version); - - if (ssh->version == 2) { - size_t len; - /* - * Record their version string. - */ - len = strcspn(s->vstring, "\015\012"); - ssh->v_s = snewn(len + 1, char); - memcpy(ssh->v_s, s->vstring, len); - ssh->v_s[len] = 0; - - /* - * Initialise SSH-2 protocol. - */ - ssh->protocol = ssh2_protocol; - ssh2_protocol_setup(ssh); - ssh->s_rdpkt = ssh2_rdpkt; - } else { - /* - * Initialise SSH-1 protocol. - */ - ssh->protocol = ssh1_protocol; - ssh1_protocol_setup(ssh); - ssh->s_rdpkt = ssh1_rdpkt; - } - if (ssh->version == 2) - do_ssh2_transport(ssh, NULL, -1, NULL); - - update_specials_menu(ssh->frontend); - ssh->state = SSH_STATE_BEFORE_SIZE; - ssh->pinger = pinger_new(&ssh->cfg, &ssh_backend, ssh); - - sfree(s->vstring); - - crFinish(0); -} - -static void ssh_process_incoming_data(Ssh ssh, - unsigned char **data, int *datalen) -{ - struct Packet *pktin; - - pktin = ssh->s_rdpkt(ssh, data, datalen); - if (pktin) { - ssh->protocol(ssh, NULL, 0, pktin); - ssh_free_packet(pktin); - } -} - -static void ssh_queue_incoming_data(Ssh ssh, - unsigned char **data, int *datalen) -{ - bufchain_add(&ssh->queued_incoming_data, *data, *datalen); - *data += *datalen; - *datalen = 0; -} - -static void ssh_process_queued_incoming_data(Ssh ssh) -{ - void *vdata; - unsigned char *data; - int len, origlen; - - while (!ssh->frozen && bufchain_size(&ssh->queued_incoming_data)) { - bufchain_prefix(&ssh->queued_incoming_data, &vdata, &len); - data = vdata; - origlen = len; - - while (!ssh->frozen && len > 0) - ssh_process_incoming_data(ssh, &data, &len); - - if (origlen > len) - bufchain_consume(&ssh->queued_incoming_data, origlen - len); - } -} - -static void ssh_set_frozen(Ssh ssh, int frozen) -{ - if (ssh->s) - sk_set_frozen(ssh->s, frozen); - ssh->frozen = frozen; -} - -static void ssh_gotdata(Ssh ssh, unsigned char *data, int datalen) -{ - /* Log raw data, if we're in that mode. */ - if (ssh->logctx) - log_packet(ssh->logctx, PKT_INCOMING, -1, NULL, data, datalen, - 0, NULL, NULL); - - crBegin(ssh->ssh_gotdata_crstate); - - /* - * To begin with, feed the characters one by one to the - * protocol initialisation / selection function do_ssh_init(). - * When that returns 0, we're done with the initial greeting - * exchange and can move on to packet discipline. - */ - while (1) { - int ret; /* need not be kept across crReturn */ - if (datalen == 0) - crReturnV; /* more data please */ - ret = do_ssh_init(ssh, *data); - data++; - datalen--; - if (ret == 0) - break; - } - - /* - * We emerge from that loop when the initial negotiation is - * over and we have selected an s_rdpkt function. Now pass - * everything to s_rdpkt, and then pass the resulting packets - * to the proper protocol handler. - */ - - while (1) { - while (bufchain_size(&ssh->queued_incoming_data) > 0 || datalen > 0) { - if (ssh->frozen) { - ssh_queue_incoming_data(ssh, &data, &datalen); - /* This uses up all data and cannot cause anything interesting - * to happen; indeed, for anything to happen at all, we must - * return, so break out. */ - break; - } else if (bufchain_size(&ssh->queued_incoming_data) > 0) { - /* This uses up some or all data, and may freeze the - * session. */ - ssh_process_queued_incoming_data(ssh); - } else { - /* This uses up some or all data, and may freeze the - * session. */ - ssh_process_incoming_data(ssh, &data, &datalen); - } - /* FIXME this is probably EBW. */ - if (ssh->state == SSH_STATE_CLOSED) - return; - } - /* We're out of data. Go and get some more. */ - crReturnV; - } - crFinishV; -} - -static int ssh_do_close(Ssh ssh, int notify_exit) -{ - int ret = 0; - struct ssh_channel *c; - - ssh->state = SSH_STATE_CLOSED; - expire_timer_context(ssh); - if (ssh->s) { - sk_close(ssh->s); - ssh->s = NULL; - if (notify_exit) - notify_remote_exit(ssh->frontend); - else - ret = 1; - } - /* - * Now we must shut down any port- and X-forwarded channels going - * through this connection. - */ - if (ssh->channels) { - while (NULL != (c = index234(ssh->channels, 0))) { - switch (c->type) { - case CHAN_X11: - x11_close(c->u.x11.s); - break; - case CHAN_SOCKDATA: - pfd_close(c->u.pfd.s); - break; - } - del234(ssh->channels, c); /* moving next one to index 0 */ - if (ssh->version == 2) - bufchain_clear(&c->v.v2.outbuffer); - sfree(c); - } - } - /* - * Go through port-forwardings, and close any associated - * listening sockets. - */ - if (ssh->portfwds) { - struct ssh_portfwd *pf; - while (NULL != (pf = index234(ssh->portfwds, 0))) { - /* Dispose of any listening socket. */ - if (pf->local) - pfd_terminate(pf->local); - del234(ssh->portfwds, pf); /* moving next one to index 0 */ - free_portfwd(pf); - } - } - - return ret; -} - -static void ssh_log(Plug plug, int type, SockAddr addr, int port, - const char *error_msg, int error_code) -{ - Ssh ssh = (Ssh) plug; - char addrbuf[256], *msg; - - sk_getaddr(addr, addrbuf, lenof(addrbuf)); - - if (type == 0) - msg = dupprintf("Connecting to %s port %d", addrbuf, port); - else - msg = dupprintf("Failed to connect to %s: %s", addrbuf, error_msg); - - logevent(msg); - sfree(msg); -} - -static int ssh_closing(Plug plug, const char *error_msg, int error_code, - int calling_back) -{ - Ssh ssh = (Ssh) plug; - int need_notify = ssh_do_close(ssh, FALSE); - - if (!error_msg) { - if (!ssh->close_expected) - error_msg = "Server unexpectedly closed network connection"; - else - error_msg = "Server closed network connection"; - } - - if (ssh->close_expected && ssh->clean_exit && ssh->exitcode < 0) - ssh->exitcode = 0; - - if (need_notify) - notify_remote_exit(ssh->frontend); - - if (error_msg) - logevent(error_msg); - if (!ssh->close_expected || !ssh->clean_exit) - connection_fatal(ssh->frontend, "%s", error_msg); - return 0; -} - -static int ssh_receive(Plug plug, int urgent, char *data, int len) -{ - Ssh ssh = (Ssh) plug; - ssh_gotdata(ssh, (unsigned char *)data, len); - if (ssh->state == SSH_STATE_CLOSED) { - ssh_do_close(ssh, TRUE); - return 0; - } - return 1; -} - -static void ssh_sent(Plug plug, int bufsize) -{ - Ssh ssh = (Ssh) plug; - /* - * If the send backlog on the SSH socket itself clears, we - * should unthrottle the whole world if it was throttled. - */ - if (bufsize < SSH_MAX_BACKLOG) - ssh_throttle_all(ssh, 0, bufsize); -} - -/* - * Connect to specified host and port. - * Returns an error message, or NULL on success. - * Also places the canonical host name into `realhost'. It must be - * freed by the caller. - */ -static const char *connect_to_host(Ssh ssh, char *host, int port, - char **realhost, int nodelay, int keepalive) -{ - static const struct plug_function_table fn_table = { - ssh_log, - ssh_closing, - ssh_receive, - ssh_sent, - NULL - }; - - SockAddr addr; - const char *err; - - if (*ssh->cfg.loghost) { - char *colon; - - ssh->savedhost = dupstr(ssh->cfg.loghost); - ssh->savedport = 22; /* default ssh port */ - - /* - * A colon suffix on savedhost also lets us affect - * savedport. - * - * (FIXME: do something about IPv6 address literals here.) - */ - colon = strrchr(ssh->savedhost, ':'); - if (colon) { - *colon++ = '\0'; - if (*colon) - ssh->savedport = atoi(colon); - } - } else { - ssh->savedhost = dupstr(host); - if (port < 0) - port = 22; /* default ssh port */ - ssh->savedport = port; - } - - /* - * Try to find host. - */ - logeventf(ssh, "Looking up host \"%s\"%s", host, - (ssh->cfg.addressfamily == ADDRTYPE_IPV4 ? " (IPv4)" : - (ssh->cfg.addressfamily == ADDRTYPE_IPV6 ? " (IPv6)" : ""))); - addr = name_lookup(host, port, realhost, &ssh->cfg, - ssh->cfg.addressfamily); - if ((err = sk_addr_error(addr)) != NULL) { - sk_addr_free(addr); - return err; - } - ssh->fullhostname = dupstr(*realhost); /* save in case of GSSAPI */ - - /* - * Open socket. - */ - ssh->fn = &fn_table; - ssh->s = new_connection(addr, *realhost, port, - 0, 1, nodelay, keepalive, (Plug) ssh, &ssh->cfg); - if ((err = sk_socket_error(ssh->s)) != NULL) { - ssh->s = NULL; - notify_remote_exit(ssh->frontend); - return err; - } - - /* - * If the SSH version number's fixed, set it now, and if it's SSH-2, - * send the version string too. - */ - if (ssh->cfg.sshprot == 0) - ssh->version = 1; - if (ssh->cfg.sshprot == 3) { - ssh->version = 2; - ssh_send_verstring(ssh, NULL); - } - - /* - * loghost, if configured, overrides realhost. - */ - if (*ssh->cfg.loghost) { - sfree(*realhost); - *realhost = dupstr(ssh->cfg.loghost); - } - - return NULL; -} - -/* - * Throttle or unthrottle the SSH connection. - */ -static void ssh_throttle_conn(Ssh ssh, int adjust) -{ - int old_count = ssh->conn_throttle_count; - ssh->conn_throttle_count += adjust; - assert(ssh->conn_throttle_count >= 0); - if (ssh->conn_throttle_count && !old_count) { - ssh_set_frozen(ssh, 1); - } else if (!ssh->conn_throttle_count && old_count) { - ssh_set_frozen(ssh, 0); - } -} - -/* - * Throttle or unthrottle _all_ local data streams (for when sends - * on the SSH connection itself back up). - */ -static void ssh_throttle_all(Ssh ssh, int enable, int bufsize) -{ - int i; - struct ssh_channel *c; - - if (enable == ssh->throttled_all) - return; - ssh->throttled_all = enable; - ssh->overall_bufsize = bufsize; - if (!ssh->channels) - return; - for (i = 0; NULL != (c = index234(ssh->channels, i)); i++) { - switch (c->type) { - case CHAN_MAINSESSION: - /* - * This is treated separately, outside the switch. - */ - break; - case CHAN_X11: - x11_override_throttle(c->u.x11.s, enable); - break; - case CHAN_AGENT: - /* Agent channels require no buffer management. */ - break; - case CHAN_SOCKDATA: - pfd_override_throttle(c->u.pfd.s, enable); - break; - } - } -} - -static void ssh_agent_callback(void *sshv, void *reply, int replylen) -{ - Ssh ssh = (Ssh) sshv; - - ssh->agent_response = reply; - ssh->agent_response_len = replylen; - - if (ssh->version == 1) - do_ssh1_login(ssh, NULL, -1, NULL); - else - do_ssh2_authconn(ssh, NULL, -1, NULL); -} - -static void ssh_dialog_callback(void *sshv, int ret) -{ - Ssh ssh = (Ssh) sshv; - - ssh->user_response = ret; - - if (ssh->version == 1) - do_ssh1_login(ssh, NULL, -1, NULL); - else - do_ssh2_transport(ssh, NULL, -1, NULL); - - /* - * This may have unfrozen the SSH connection, so do a - * queued-data run. - */ - ssh_process_queued_incoming_data(ssh); -} - -static void ssh_agentf_callback(void *cv, void *reply, int replylen) -{ - struct ssh_channel *c = (struct ssh_channel *)cv; - Ssh ssh = c->ssh; - void *sentreply = reply; - - if (!sentreply) { - /* Fake SSH_AGENT_FAILURE. */ - sentreply = "\0\0\0\1\5"; - replylen = 5; - } - if (ssh->version == 2) { - ssh2_add_channel_data(c, sentreply, replylen); - ssh2_try_send(c); - } else { - send_packet(ssh, SSH1_MSG_CHANNEL_DATA, - PKT_INT, c->remoteid, - PKT_INT, replylen, - PKTT_DATA, - PKT_DATA, sentreply, replylen, - PKTT_OTHER, - PKT_END); - } - if (reply) - sfree(reply); -} - -/* - * Client-initiated disconnection. Send a DISCONNECT if `wire_reason' - * non-NULL, otherwise just close the connection. `client_reason' == NULL - * => log `wire_reason'. - */ -static void ssh_disconnect(Ssh ssh, char *client_reason, char *wire_reason, - int code, int clean_exit) -{ - char *error; - if (!client_reason) - client_reason = wire_reason; - if (client_reason) - error = dupprintf("Disconnected: %s", client_reason); - else - error = dupstr("Disconnected"); - if (wire_reason) { - if (ssh->version == 1) { - send_packet(ssh, SSH1_MSG_DISCONNECT, PKT_STR, wire_reason, - PKT_END); - } else if (ssh->version == 2) { - struct Packet *pktout = ssh2_pkt_init(SSH2_MSG_DISCONNECT); - ssh2_pkt_adduint32(pktout, code); - ssh2_pkt_addstring(pktout, wire_reason); - ssh2_pkt_addstring(pktout, "en"); /* language tag */ - ssh2_pkt_send_noqueue(ssh, pktout); - } - } - ssh->close_expected = TRUE; - ssh->clean_exit = clean_exit; - ssh_closing((Plug)ssh, error, 0, 0); - sfree(error); -} - -/* - * Handle the key exchange and user authentication phases. - */ -static int do_ssh1_login(Ssh ssh, unsigned char *in, int inlen, - struct Packet *pktin) -{ - int i, j, ret; - unsigned char cookie[8], *ptr; - struct RSAKey servkey, hostkey; - struct MD5Context md5c; - struct do_ssh1_login_state { - int len; - unsigned char *rsabuf, *keystr1, *keystr2; - unsigned long supported_ciphers_mask, supported_auths_mask; - int tried_publickey, tried_agent; - int tis_auth_refused, ccard_auth_refused; - unsigned char session_id[16]; - int cipher_type; - char username[100]; - void *publickey_blob; - int publickey_bloblen; - char *publickey_comment; - int publickey_encrypted; - prompts_t *cur_prompt; - char c; - int pwpkt_type; - unsigned char request[5], *response, *p; - int responselen; - int keyi, nkeys; - int authed; - struct RSAKey key; - Bignum challenge; - char *commentp; - int commentlen; - int dlgret; - }; - crState(do_ssh1_login_state); - - crBegin(ssh->do_ssh1_login_crstate); - - if (!pktin) - crWaitUntil(pktin); - - if (pktin->type != SSH1_SMSG_PUBLIC_KEY) { - bombout(("Public key packet not received")); - crStop(0); - } - - logevent("Received public keys"); - - ptr = ssh_pkt_getdata(pktin, 8); - if (!ptr) { - bombout(("SSH-1 public key packet stopped before random cookie")); - crStop(0); - } - memcpy(cookie, ptr, 8); - - if (!ssh1_pkt_getrsakey(pktin, &servkey, &s->keystr1) || - !ssh1_pkt_getrsakey(pktin, &hostkey, &s->keystr2)) { - bombout(("Failed to read SSH-1 public keys from public key packet")); - crStop(0); - } - - /* - * Log the host key fingerprint. - */ - { - char logmsg[80]; - logevent("Host key fingerprint is:"); - strcpy(logmsg, " "); - hostkey.comment = NULL; - rsa_fingerprint(logmsg + strlen(logmsg), - sizeof(logmsg) - strlen(logmsg), &hostkey); - logevent(logmsg); - } - - ssh->v1_remote_protoflags = ssh_pkt_getuint32(pktin); - s->supported_ciphers_mask = ssh_pkt_getuint32(pktin); - s->supported_auths_mask = ssh_pkt_getuint32(pktin); - if ((ssh->remote_bugs & BUG_CHOKES_ON_RSA)) - s->supported_auths_mask &= ~(1 << SSH1_AUTH_RSA); - - ssh->v1_local_protoflags = - ssh->v1_remote_protoflags & SSH1_PROTOFLAGS_SUPPORTED; - ssh->v1_local_protoflags |= SSH1_PROTOFLAG_SCREEN_NUMBER; - - MD5Init(&md5c); - MD5Update(&md5c, s->keystr2, hostkey.bytes); - MD5Update(&md5c, s->keystr1, servkey.bytes); - MD5Update(&md5c, cookie, 8); - MD5Final(s->session_id, &md5c); - - for (i = 0; i < 32; i++) - ssh->session_key[i] = random_byte(); - - /* - * Verify that the `bits' and `bytes' parameters match. - */ - if (hostkey.bits > hostkey.bytes * 8 || - servkey.bits > servkey.bytes * 8) { - bombout(("SSH-1 public keys were badly formatted")); - crStop(0); - } - - s->len = (hostkey.bytes > servkey.bytes ? hostkey.bytes : servkey.bytes); - - s->rsabuf = snewn(s->len, unsigned char); - - /* - * Verify the host key. - */ - { - /* - * First format the key into a string. - */ - int len = rsastr_len(&hostkey); - char fingerprint[100]; - char *keystr = snewn(len, char); - rsastr_fmt(keystr, &hostkey); - rsa_fingerprint(fingerprint, sizeof(fingerprint), &hostkey); - - ssh_set_frozen(ssh, 1); - s->dlgret = verify_ssh_host_key(ssh->frontend, - ssh->savedhost, ssh->savedport, - "rsa", keystr, fingerprint, - ssh_dialog_callback, ssh); - sfree(keystr); - if (s->dlgret < 0) { - do { - crReturn(0); - if (pktin) { - bombout(("Unexpected data from server while waiting" - " for user host key response")); - crStop(0); - } - } while (pktin || inlen > 0); - s->dlgret = ssh->user_response; - } - ssh_set_frozen(ssh, 0); - - if (s->dlgret == 0) { - ssh_disconnect(ssh, "User aborted at host key verification", - NULL, 0, TRUE); - crStop(0); - } - } - - for (i = 0; i < 32; i++) { - s->rsabuf[i] = ssh->session_key[i]; - if (i < 16) - s->rsabuf[i] ^= s->session_id[i]; - } - - if (hostkey.bytes > servkey.bytes) { - ret = rsaencrypt(s->rsabuf, 32, &servkey); - if (ret) - ret = rsaencrypt(s->rsabuf, servkey.bytes, &hostkey); - } else { - ret = rsaencrypt(s->rsabuf, 32, &hostkey); - if (ret) - ret = rsaencrypt(s->rsabuf, hostkey.bytes, &servkey); - } - if (!ret) { - bombout(("SSH-1 public key encryptions failed due to bad formatting")); - crStop(0); - } - - logevent("Encrypted session key"); - - { - int cipher_chosen = 0, warn = 0; - char *cipher_string = NULL; - int i; - for (i = 0; !cipher_chosen && i < CIPHER_MAX; i++) { - int next_cipher = ssh->cfg.ssh_cipherlist[i]; - if (next_cipher == CIPHER_WARN) { - /* If/when we choose a cipher, warn about it */ - warn = 1; - } else if (next_cipher == CIPHER_AES) { - /* XXX Probably don't need to mention this. */ - logevent("AES not supported in SSH-1, skipping"); - } else { - switch (next_cipher) { - case CIPHER_3DES: s->cipher_type = SSH_CIPHER_3DES; - cipher_string = "3DES"; break; - case CIPHER_BLOWFISH: s->cipher_type = SSH_CIPHER_BLOWFISH; - cipher_string = "Blowfish"; break; - case CIPHER_DES: s->cipher_type = SSH_CIPHER_DES; - cipher_string = "single-DES"; break; - } - if (s->supported_ciphers_mask & (1 << s->cipher_type)) - cipher_chosen = 1; - } - } - if (!cipher_chosen) { - if ((s->supported_ciphers_mask & (1 << SSH_CIPHER_3DES)) == 0) - bombout(("Server violates SSH-1 protocol by not " - "supporting 3DES encryption")); - else - /* shouldn't happen */ - bombout(("No supported ciphers found")); - crStop(0); - } - - /* Warn about chosen cipher if necessary. */ - if (warn) { - ssh_set_frozen(ssh, 1); - s->dlgret = askalg(ssh->frontend, "cipher", cipher_string, - ssh_dialog_callback, ssh); - if (s->dlgret < 0) { - do { - crReturn(0); - if (pktin) { - bombout(("Unexpected data from server while waiting" - " for user response")); - crStop(0); - } - } while (pktin || inlen > 0); - s->dlgret = ssh->user_response; - } - ssh_set_frozen(ssh, 0); - if (s->dlgret == 0) { - ssh_disconnect(ssh, "User aborted at cipher warning", NULL, - 0, TRUE); - crStop(0); - } - } - } - - switch (s->cipher_type) { - case SSH_CIPHER_3DES: - logevent("Using 3DES encryption"); - break; - case SSH_CIPHER_DES: - logevent("Using single-DES encryption"); - break; - case SSH_CIPHER_BLOWFISH: - logevent("Using Blowfish encryption"); - break; - } - - send_packet(ssh, SSH1_CMSG_SESSION_KEY, - PKT_CHAR, s->cipher_type, - PKT_DATA, cookie, 8, - PKT_CHAR, (s->len * 8) >> 8, PKT_CHAR, (s->len * 8) & 0xFF, - PKT_DATA, s->rsabuf, s->len, - PKT_INT, ssh->v1_local_protoflags, PKT_END); - - logevent("Trying to enable encryption..."); - - sfree(s->rsabuf); - - ssh->cipher = (s->cipher_type == SSH_CIPHER_BLOWFISH ? &ssh_blowfish_ssh1 : - s->cipher_type == SSH_CIPHER_DES ? &ssh_des : - &ssh_3des); - ssh->v1_cipher_ctx = ssh->cipher->make_context(); - ssh->cipher->sesskey(ssh->v1_cipher_ctx, ssh->session_key); - logeventf(ssh, "Initialised %s encryption", ssh->cipher->text_name); - - ssh->crcda_ctx = crcda_make_context(); - logevent("Installing CRC compensation attack detector"); - - if (servkey.modulus) { - sfree(servkey.modulus); - servkey.modulus = NULL; - } - if (servkey.exponent) { - sfree(servkey.exponent); - servkey.exponent = NULL; - } - if (hostkey.modulus) { - sfree(hostkey.modulus); - hostkey.modulus = NULL; - } - if (hostkey.exponent) { - sfree(hostkey.exponent); - hostkey.exponent = NULL; - } - crWaitUntil(pktin); - - if (pktin->type != SSH1_SMSG_SUCCESS) { - bombout(("Encryption not successfully enabled")); - crStop(0); - } - - logevent("Successfully started encryption"); - - fflush(stdout); /* FIXME eh? */ - { - if (!get_remote_username(&ssh->cfg, s->username, - sizeof(s->username))) { - int ret; /* need not be kept over crReturn */ - s->cur_prompt = new_prompts(ssh->frontend); - s->cur_prompt->to_server = TRUE; - s->cur_prompt->name = dupstr("SSH login name"); - add_prompt(s->cur_prompt, dupstr("login as: "), TRUE, - lenof(s->username)); - ret = get_userpass_input(s->cur_prompt, NULL, 0); - while (ret < 0) { - ssh->send_ok = 1; - crWaitUntil(!pktin); - ret = get_userpass_input(s->cur_prompt, in, inlen); - ssh->send_ok = 0; - } - if (!ret) { - /* - * Failed to get a username. Terminate. - */ - free_prompts(s->cur_prompt); - ssh_disconnect(ssh, "No username provided", NULL, 0, TRUE); - crStop(0); - } - memcpy(s->username, s->cur_prompt->prompts[0]->result, - lenof(s->username)); - free_prompts(s->cur_prompt); - } - - send_packet(ssh, SSH1_CMSG_USER, PKT_STR, s->username, PKT_END); - { - char *userlog = dupprintf("Sent username \"%s\"", s->username); - logevent(userlog); - if (flags & FLAG_INTERACTIVE && - (!((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)))) { - c_write_str(ssh, userlog); - c_write_str(ssh, "\r\n"); - } - sfree(userlog); - } - } - - crWaitUntil(pktin); - - if ((s->supported_auths_mask & (1 << SSH1_AUTH_RSA)) == 0) { - /* We must not attempt PK auth. Pretend we've already tried it. */ - s->tried_publickey = s->tried_agent = 1; - } else { - s->tried_publickey = s->tried_agent = 0; - } - s->tis_auth_refused = s->ccard_auth_refused = 0; - /* - * Load the public half of any configured keyfile for later use. - */ - if (!filename_is_null(ssh->cfg.keyfile)) { - int keytype; - logeventf(ssh, "Reading private key file \"%.150s\"", - filename_to_str(&ssh->cfg.keyfile)); - keytype = key_type(&ssh->cfg.keyfile); - if (keytype == SSH_KEYTYPE_SSH1) { - const char *error; - if (rsakey_pubblob(&ssh->cfg.keyfile, - &s->publickey_blob, &s->publickey_bloblen, - &s->publickey_comment, &error)) { - s->publickey_encrypted = rsakey_encrypted(&ssh->cfg.keyfile, - NULL); - } else { - char *msgbuf; - logeventf(ssh, "Unable to load private key (%s)", error); - msgbuf = dupprintf("Unable to load private key file " - "\"%.150s\" (%s)\r\n", - filename_to_str(&ssh->cfg.keyfile), - error); - c_write_str(ssh, msgbuf); - sfree(msgbuf); - s->publickey_blob = NULL; - } - } else { - char *msgbuf; - logeventf(ssh, "Unable to use this key file (%s)", - key_type_to_str(keytype)); - msgbuf = dupprintf("Unable to use key file \"%.150s\"" - " (%s)\r\n", - filename_to_str(&ssh->cfg.keyfile), - key_type_to_str(keytype)); - c_write_str(ssh, msgbuf); - sfree(msgbuf); - s->publickey_blob = NULL; - } - } else - s->publickey_blob = NULL; - - while (pktin->type == SSH1_SMSG_FAILURE) { - s->pwpkt_type = SSH1_CMSG_AUTH_PASSWORD; - - if (ssh->cfg.tryagent && agent_exists() && !s->tried_agent) { - /* - * Attempt RSA authentication using Pageant. - */ - void *r; - - s->authed = FALSE; - s->tried_agent = 1; - logevent("Pageant is running. Requesting keys."); - - /* Request the keys held by the agent. */ - PUT_32BIT(s->request, 1); - s->request[4] = SSH1_AGENTC_REQUEST_RSA_IDENTITIES; - if (!agent_query(s->request, 5, &r, &s->responselen, - ssh_agent_callback, ssh)) { - do { - crReturn(0); - if (pktin) { - bombout(("Unexpected data from server while waiting" - " for agent response")); - crStop(0); - } - } while (pktin || inlen > 0); - r = ssh->agent_response; - s->responselen = ssh->agent_response_len; - } - s->response = (unsigned char *) r; - if (s->response && s->responselen >= 5 && - s->response[4] == SSH1_AGENT_RSA_IDENTITIES_ANSWER) { - s->p = s->response + 5; - s->nkeys = GET_32BIT(s->p); - s->p += 4; - logeventf(ssh, "Pageant has %d SSH-1 keys", s->nkeys); - for (s->keyi = 0; s->keyi < s->nkeys; s->keyi++) { - unsigned char *pkblob = s->p; - s->p += 4; - { - int n, ok = FALSE; - do { /* do while (0) to make breaking easy */ - n = ssh1_read_bignum - (s->p, s->responselen-(s->p-s->response), - &s->key.exponent); - if (n < 0) - break; - s->p += n; - n = ssh1_read_bignum - (s->p, s->responselen-(s->p-s->response), - &s->key.modulus); - if (n < 0) - break; - s->p += n; - if (s->responselen - (s->p-s->response) < 4) - break; - s->commentlen = GET_32BIT(s->p); - s->p += 4; - if (s->responselen - (s->p-s->response) < - s->commentlen) - break; - s->commentp = (char *)s->p; - s->p += s->commentlen; - ok = TRUE; - } while (0); - if (!ok) { - logevent("Pageant key list packet was truncated"); - break; - } - } - if (s->publickey_blob) { - if (!memcmp(pkblob, s->publickey_blob, - s->publickey_bloblen)) { - logeventf(ssh, "Pageant key #%d matches " - "configured key file", s->keyi); - s->tried_publickey = 1; - } else - /* Skip non-configured key */ - continue; - } - logeventf(ssh, "Trying Pageant key #%d", s->keyi); - send_packet(ssh, SSH1_CMSG_AUTH_RSA, - PKT_BIGNUM, s->key.modulus, PKT_END); - crWaitUntil(pktin); - if (pktin->type != SSH1_SMSG_AUTH_RSA_CHALLENGE) { - logevent("Key refused"); - continue; - } - logevent("Received RSA challenge"); - if ((s->challenge = ssh1_pkt_getmp(pktin)) == NULL) { - bombout(("Server's RSA challenge was badly formatted")); - crStop(0); - } - - { - char *agentreq, *q, *ret; - void *vret; - int len, retlen; - len = 1 + 4; /* message type, bit count */ - len += ssh1_bignum_length(s->key.exponent); - len += ssh1_bignum_length(s->key.modulus); - len += ssh1_bignum_length(s->challenge); - len += 16; /* session id */ - len += 4; /* response format */ - agentreq = snewn(4 + len, char); - PUT_32BIT(agentreq, len); - q = agentreq + 4; - *q++ = SSH1_AGENTC_RSA_CHALLENGE; - PUT_32BIT(q, bignum_bitcount(s->key.modulus)); - q += 4; - q += ssh1_write_bignum(q, s->key.exponent); - q += ssh1_write_bignum(q, s->key.modulus); - q += ssh1_write_bignum(q, s->challenge); - memcpy(q, s->session_id, 16); - q += 16; - PUT_32BIT(q, 1); /* response format */ - if (!agent_query(agentreq, len + 4, &vret, &retlen, - ssh_agent_callback, ssh)) { - sfree(agentreq); - do { - crReturn(0); - if (pktin) { - bombout(("Unexpected data from server" - " while waiting for agent" - " response")); - crStop(0); - } - } while (pktin || inlen > 0); - vret = ssh->agent_response; - retlen = ssh->agent_response_len; - } else - sfree(agentreq); - ret = vret; - if (ret) { - if (ret[4] == SSH1_AGENT_RSA_RESPONSE) { - logevent("Sending Pageant's response"); - send_packet(ssh, SSH1_CMSG_AUTH_RSA_RESPONSE, - PKT_DATA, ret + 5, 16, - PKT_END); - sfree(ret); - crWaitUntil(pktin); - if (pktin->type == SSH1_SMSG_SUCCESS) { - logevent - ("Pageant's response accepted"); - if (flags & FLAG_VERBOSE) { - c_write_str(ssh, "Authenticated using" - " RSA key \""); - c_write(ssh, s->commentp, - s->commentlen); - c_write_str(ssh, "\" from agent\r\n"); - } - s->authed = TRUE; - } else - logevent - ("Pageant's response not accepted"); - } else { - logevent - ("Pageant failed to answer challenge"); - sfree(ret); - } - } else { - logevent("No reply received from Pageant"); - } - } - freebn(s->key.exponent); - freebn(s->key.modulus); - freebn(s->challenge); - if (s->authed) - break; - } - sfree(s->response); - if (s->publickey_blob && !s->tried_publickey) - logevent("Configured key file not in Pageant"); - } - if (s->authed) - break; - } - if (s->publickey_blob && !s->tried_publickey) { - /* - * Try public key authentication with the specified - * key file. - */ - int got_passphrase; /* need not be kept over crReturn */ - if (flags & FLAG_VERBOSE) - c_write_str(ssh, "Trying public key authentication.\r\n"); - logeventf(ssh, "Trying public key \"%s\"", - filename_to_str(&ssh->cfg.keyfile)); - s->tried_publickey = 1; - got_passphrase = FALSE; - while (!got_passphrase) { - /* - * Get a passphrase, if necessary. - */ - char *passphrase = NULL; /* only written after crReturn */ - const char *error; - if (!s->publickey_encrypted) { - if (flags & FLAG_VERBOSE) - c_write_str(ssh, "No passphrase required.\r\n"); - passphrase = NULL; - } else { - int ret; /* need not be kept over crReturn */ - s->cur_prompt = new_prompts(ssh->frontend); - s->cur_prompt->to_server = FALSE; - s->cur_prompt->name = dupstr("SSH key passphrase"); - add_prompt(s->cur_prompt, - dupprintf("Passphrase for key \"%.100s\": ", - s->publickey_comment), - FALSE, SSH_MAX_PASSWORD_LEN); - ret = get_userpass_input(s->cur_prompt, NULL, 0); - while (ret < 0) { - ssh->send_ok = 1; - crWaitUntil(!pktin); - ret = get_userpass_input(s->cur_prompt, in, inlen); - ssh->send_ok = 0; - } - if (!ret) { - /* Failed to get a passphrase. Terminate. */ - free_prompts(s->cur_prompt); - ssh_disconnect(ssh, NULL, "Unable to authenticate", - 0, TRUE); - crStop(0); - } - passphrase = dupstr(s->cur_prompt->prompts[0]->result); - free_prompts(s->cur_prompt); - } - /* - * Try decrypting key with passphrase. - */ - ret = loadrsakey(&ssh->cfg.keyfile, &s->key, passphrase, - &error); - if (passphrase) { - memset(passphrase, 0, strlen(passphrase)); - sfree(passphrase); - } - if (ret == 1) { - /* Correct passphrase. */ - got_passphrase = TRUE; - } else if (ret == 0) { - c_write_str(ssh, "Couldn't load private key from "); - c_write_str(ssh, filename_to_str(&ssh->cfg.keyfile)); - c_write_str(ssh, " ("); - c_write_str(ssh, error); - c_write_str(ssh, ").\r\n"); - got_passphrase = FALSE; - break; /* go and try something else */ - } else if (ret == -1) { - c_write_str(ssh, "Wrong passphrase.\r\n"); /* FIXME */ - got_passphrase = FALSE; - /* and try again */ - } else { - assert(0 && "unexpected return from loadrsakey()"); - got_passphrase = FALSE; /* placate optimisers */ - } - } - - if (got_passphrase) { - - /* - * Send a public key attempt. - */ - send_packet(ssh, SSH1_CMSG_AUTH_RSA, - PKT_BIGNUM, s->key.modulus, PKT_END); - - crWaitUntil(pktin); - if (pktin->type == SSH1_SMSG_FAILURE) { - c_write_str(ssh, "Server refused our public key.\r\n"); - continue; /* go and try something else */ - } - if (pktin->type != SSH1_SMSG_AUTH_RSA_CHALLENGE) { - bombout(("Bizarre response to offer of public key")); - crStop(0); - } - - { - int i; - unsigned char buffer[32]; - Bignum challenge, response; - - if ((challenge = ssh1_pkt_getmp(pktin)) == NULL) { - bombout(("Server's RSA challenge was badly formatted")); - crStop(0); - } - response = rsadecrypt(challenge, &s->key); - freebn(s->key.private_exponent);/* burn the evidence */ - - for (i = 0; i < 32; i++) { - buffer[i] = bignum_byte(response, 31 - i); - } - - MD5Init(&md5c); - MD5Update(&md5c, buffer, 32); - MD5Update(&md5c, s->session_id, 16); - MD5Final(buffer, &md5c); - - send_packet(ssh, SSH1_CMSG_AUTH_RSA_RESPONSE, - PKT_DATA, buffer, 16, PKT_END); - - freebn(challenge); - freebn(response); - } - - crWaitUntil(pktin); - if (pktin->type == SSH1_SMSG_FAILURE) { - if (flags & FLAG_VERBOSE) - c_write_str(ssh, "Failed to authenticate with" - " our public key.\r\n"); - continue; /* go and try something else */ - } else if (pktin->type != SSH1_SMSG_SUCCESS) { - bombout(("Bizarre response to RSA authentication response")); - crStop(0); - } - - break; /* we're through! */ - } - - } - - /* - * Otherwise, try various forms of password-like authentication. - */ - s->cur_prompt = new_prompts(ssh->frontend); - - if (ssh->cfg.try_tis_auth && - (s->supported_auths_mask & (1 << SSH1_AUTH_TIS)) && - !s->tis_auth_refused) { - s->pwpkt_type = SSH1_CMSG_AUTH_TIS_RESPONSE; - logevent("Requested TIS authentication"); - send_packet(ssh, SSH1_CMSG_AUTH_TIS, PKT_END); - crWaitUntil(pktin); - if (pktin->type != SSH1_SMSG_AUTH_TIS_CHALLENGE) { - logevent("TIS authentication declined"); - if (flags & FLAG_INTERACTIVE) - c_write_str(ssh, "TIS authentication refused.\r\n"); - s->tis_auth_refused = 1; - continue; - } else { - char *challenge; - int challengelen; - char *instr_suf, *prompt; - - ssh_pkt_getstring(pktin, &challenge, &challengelen); - if (!challenge) { - bombout(("TIS challenge packet was badly formed")); - crStop(0); - } - logevent("Received TIS challenge"); - s->cur_prompt->to_server = TRUE; - s->cur_prompt->name = dupstr("SSH TIS authentication"); - /* Prompt heuristic comes from OpenSSH */ - if (memchr(challenge, '\n', challengelen)) { - instr_suf = dupstr(""); - prompt = dupprintf("%.*s", challengelen, challenge); - } else { - instr_suf = dupprintf("%.*s", challengelen, challenge); - prompt = dupstr("Response: "); - } - s->cur_prompt->instruction = - dupprintf("Using TIS authentication.%s%s", - (*instr_suf) ? "\n" : "", - instr_suf); - s->cur_prompt->instr_reqd = TRUE; - add_prompt(s->cur_prompt, prompt, FALSE, SSH_MAX_PASSWORD_LEN); - sfree(instr_suf); - } - } - if (ssh->cfg.try_tis_auth && - (s->supported_auths_mask & (1 << SSH1_AUTH_CCARD)) && - !s->ccard_auth_refused) { - s->pwpkt_type = SSH1_CMSG_AUTH_CCARD_RESPONSE; - logevent("Requested CryptoCard authentication"); - send_packet(ssh, SSH1_CMSG_AUTH_CCARD, PKT_END); - crWaitUntil(pktin); - if (pktin->type != SSH1_SMSG_AUTH_CCARD_CHALLENGE) { - logevent("CryptoCard authentication declined"); - c_write_str(ssh, "CryptoCard authentication refused.\r\n"); - s->ccard_auth_refused = 1; - continue; - } else { - char *challenge; - int challengelen; - char *instr_suf, *prompt; - - ssh_pkt_getstring(pktin, &challenge, &challengelen); - if (!challenge) { - bombout(("CryptoCard challenge packet was badly formed")); - crStop(0); - } - logevent("Received CryptoCard challenge"); - s->cur_prompt->to_server = TRUE; - s->cur_prompt->name = dupstr("SSH CryptoCard authentication"); - s->cur_prompt->name_reqd = FALSE; - /* Prompt heuristic comes from OpenSSH */ - if (memchr(challenge, '\n', challengelen)) { - instr_suf = dupstr(""); - prompt = dupprintf("%.*s", challengelen, challenge); - } else { - instr_suf = dupprintf("%.*s", challengelen, challenge); - prompt = dupstr("Response: "); - } - s->cur_prompt->instruction = - dupprintf("Using CryptoCard authentication.%s%s", - (*instr_suf) ? "\n" : "", - instr_suf); - s->cur_prompt->instr_reqd = TRUE; - add_prompt(s->cur_prompt, prompt, FALSE, SSH_MAX_PASSWORD_LEN); - sfree(instr_suf); - } - } - if (s->pwpkt_type == SSH1_CMSG_AUTH_PASSWORD) { - if ((s->supported_auths_mask & (1 << SSH1_AUTH_PASSWORD)) == 0) { - bombout(("No supported authentication methods available")); - crStop(0); - } - s->cur_prompt->to_server = TRUE; - s->cur_prompt->name = dupstr("SSH password"); - add_prompt(s->cur_prompt, dupprintf("%.90s@%.90s's password: ", - s->username, ssh->savedhost), - FALSE, SSH_MAX_PASSWORD_LEN); - } - - /* - * Show password prompt, having first obtained it via a TIS - * or CryptoCard exchange if we're doing TIS or CryptoCard - * authentication. - */ - { - int ret; /* need not be kept over crReturn */ - ret = get_userpass_input(s->cur_prompt, NULL, 0); - while (ret < 0) { - ssh->send_ok = 1; - crWaitUntil(!pktin); - ret = get_userpass_input(s->cur_prompt, in, inlen); - ssh->send_ok = 0; - } - if (!ret) { - /* - * Failed to get a password (for example - * because one was supplied on the command line - * which has already failed to work). Terminate. - */ - free_prompts(s->cur_prompt); - ssh_disconnect(ssh, NULL, "Unable to authenticate", 0, TRUE); - crStop(0); - } - } - - if (s->pwpkt_type == SSH1_CMSG_AUTH_PASSWORD) { - /* - * Defence against traffic analysis: we send a - * whole bunch of packets containing strings of - * different lengths. One of these strings is the - * password, in a SSH1_CMSG_AUTH_PASSWORD packet. - * The others are all random data in - * SSH1_MSG_IGNORE packets. This way a passive - * listener can't tell which is the password, and - * hence can't deduce the password length. - * - * Anybody with a password length greater than 16 - * bytes is going to have enough entropy in their - * password that a listener won't find it _that_ - * much help to know how long it is. So what we'll - * do is: - * - * - if password length < 16, we send 15 packets - * containing string lengths 1 through 15 - * - * - otherwise, we let N be the nearest multiple - * of 8 below the password length, and send 8 - * packets containing string lengths N through - * N+7. This won't obscure the order of - * magnitude of the password length, but it will - * introduce a bit of extra uncertainty. - * - * A few servers can't deal with SSH1_MSG_IGNORE, at - * least in this context. For these servers, we need - * an alternative defence. We make use of the fact - * that the password is interpreted as a C string: - * so we can append a NUL, then some random data. - * - * A few servers can deal with neither SSH1_MSG_IGNORE - * here _nor_ a padded password string. - * For these servers we are left with no defences - * against password length sniffing. - */ - if (!(ssh->remote_bugs & BUG_CHOKES_ON_SSH1_IGNORE) && - !(ssh->remote_bugs & BUG_NEEDS_SSH1_PLAIN_PASSWORD)) { - /* - * The server can deal with SSH1_MSG_IGNORE, so - * we can use the primary defence. - */ - int bottom, top, pwlen, i; - char *randomstr; - - pwlen = strlen(s->cur_prompt->prompts[0]->result); - if (pwlen < 16) { - bottom = 0; /* zero length passwords are OK! :-) */ - top = 15; - } else { - bottom = pwlen & ~7; - top = bottom + 7; - } - - assert(pwlen >= bottom && pwlen <= top); - - randomstr = snewn(top + 1, char); - - for (i = bottom; i <= top; i++) { - if (i == pwlen) { - defer_packet(ssh, s->pwpkt_type, - PKTT_PASSWORD, PKT_STR, - s->cur_prompt->prompts[0]->result, - PKTT_OTHER, PKT_END); - } else { - for (j = 0; j < i; j++) { - do { - randomstr[j] = random_byte(); - } while (randomstr[j] == '\0'); - } - randomstr[i] = '\0'; - defer_packet(ssh, SSH1_MSG_IGNORE, - PKT_STR, randomstr, PKT_END); - } - } - logevent("Sending password with camouflage packets"); - ssh_pkt_defersend(ssh); - sfree(randomstr); - } - else if (!(ssh->remote_bugs & BUG_NEEDS_SSH1_PLAIN_PASSWORD)) { - /* - * The server can't deal with SSH1_MSG_IGNORE - * but can deal with padded passwords, so we - * can use the secondary defence. - */ - char string[64]; - char *ss; - int len; - - len = strlen(s->cur_prompt->prompts[0]->result); - if (len < sizeof(string)) { - ss = string; - strcpy(string, s->cur_prompt->prompts[0]->result); - len++; /* cover the zero byte */ - while (len < sizeof(string)) { - string[len++] = (char) random_byte(); - } - } else { - ss = s->cur_prompt->prompts[0]->result; - } - logevent("Sending length-padded password"); - send_packet(ssh, s->pwpkt_type, PKTT_PASSWORD, - PKT_INT, len, PKT_DATA, ss, len, - PKTT_OTHER, PKT_END); - } else { - /* - * The server is believed unable to cope with - * any of our password camouflage methods. - */ - int len; - len = strlen(s->cur_prompt->prompts[0]->result); - logevent("Sending unpadded password"); - send_packet(ssh, s->pwpkt_type, - PKTT_PASSWORD, PKT_INT, len, - PKT_DATA, s->cur_prompt->prompts[0]->result, len, - PKTT_OTHER, PKT_END); - } - } else { - send_packet(ssh, s->pwpkt_type, PKTT_PASSWORD, - PKT_STR, s->cur_prompt->prompts[0]->result, - PKTT_OTHER, PKT_END); - } - logevent("Sent password"); - free_prompts(s->cur_prompt); - crWaitUntil(pktin); - if (pktin->type == SSH1_SMSG_FAILURE) { - if (flags & FLAG_VERBOSE) - c_write_str(ssh, "Access denied\r\n"); - logevent("Authentication refused"); - } else if (pktin->type != SSH1_SMSG_SUCCESS) { - bombout(("Strange packet received, type %d", pktin->type)); - crStop(0); - } - } - - /* Clear up */ - if (s->publickey_blob) { - sfree(s->publickey_blob); - sfree(s->publickey_comment); - } - - logevent("Authentication successful"); - - crFinish(1); -} - -void sshfwd_close(struct ssh_channel *c) -{ - Ssh ssh = c->ssh; - - if (ssh->state == SSH_STATE_CLOSED) - return; - - if (c && !c->closes) { - /* - * If halfopen is true, we have sent - * CHANNEL_OPEN for this channel, but it hasn't even been - * acknowledged by the server. So we must set a close flag - * on it now, and then when the server acks the channel - * open, we can close it then. - */ - if (!c->halfopen) { - if (ssh->version == 1) { - send_packet(ssh, SSH1_MSG_CHANNEL_CLOSE, PKT_INT, c->remoteid, - PKT_END); - } else { - struct Packet *pktout; - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_CLOSE); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_send(ssh, pktout); - } - } - c->closes = 1; /* sent MSG_CLOSE */ - if (c->type == CHAN_X11) { - c->u.x11.s = NULL; - logevent("Forwarded X11 connection terminated"); - } else if (c->type == CHAN_SOCKDATA || - c->type == CHAN_SOCKDATA_DORMANT) { - c->u.pfd.s = NULL; - logevent("Forwarded port closed"); - } - } -} - -int sshfwd_write(struct ssh_channel *c, char *buf, int len) -{ - Ssh ssh = c->ssh; - - if (ssh->state == SSH_STATE_CLOSED) - return 0; - - if (ssh->version == 1) { - send_packet(ssh, SSH1_MSG_CHANNEL_DATA, - PKT_INT, c->remoteid, - PKT_INT, len, PKTT_DATA, PKT_DATA, buf, len, - PKTT_OTHER, PKT_END); - /* - * In SSH-1 we can return 0 here - implying that forwarded - * connections are never individually throttled - because - * the only circumstance that can cause throttling will be - * the whole SSH connection backing up, in which case - * _everything_ will be throttled as a whole. - */ - return 0; - } else { - ssh2_add_channel_data(c, buf, len); - return ssh2_try_send(c); - } -} - -void sshfwd_unthrottle(struct ssh_channel *c, int bufsize) -{ - Ssh ssh = c->ssh; - int buflimit; - - if (ssh->state == SSH_STATE_CLOSED) - return; - - if (ssh->version == 1) { - buflimit = SSH1_BUFFER_LIMIT; - } else { - buflimit = c->v.v2.locmaxwin; - ssh2_set_window(c, bufsize < buflimit ? buflimit - bufsize : 0); - } - if (c->throttling_conn && bufsize <= buflimit) { - c->throttling_conn = 0; - ssh_throttle_conn(ssh, -1); - } -} - -static void ssh_queueing_handler(Ssh ssh, struct Packet *pktin) -{ - struct queued_handler *qh = ssh->qhead; - - assert(qh != NULL); - - assert(pktin->type == qh->msg1 || pktin->type == qh->msg2); - - if (qh->msg1 > 0) { - assert(ssh->packet_dispatch[qh->msg1] == ssh_queueing_handler); - ssh->packet_dispatch[qh->msg1] = NULL; - } - if (qh->msg2 > 0) { - assert(ssh->packet_dispatch[qh->msg2] == ssh_queueing_handler); - ssh->packet_dispatch[qh->msg2] = NULL; - } - - if (qh->next) { - ssh->qhead = qh->next; - - if (ssh->qhead->msg1 > 0) { - assert(ssh->packet_dispatch[ssh->qhead->msg1] == NULL); - ssh->packet_dispatch[ssh->qhead->msg1] = ssh_queueing_handler; - } - if (ssh->qhead->msg2 > 0) { - assert(ssh->packet_dispatch[ssh->qhead->msg2] == NULL); - ssh->packet_dispatch[ssh->qhead->msg2] = ssh_queueing_handler; - } - } else { - ssh->qhead = ssh->qtail = NULL; - ssh->packet_dispatch[pktin->type] = NULL; - } - - qh->handler(ssh, pktin, qh->ctx); - - sfree(qh); -} - -static void ssh_queue_handler(Ssh ssh, int msg1, int msg2, - chandler_fn_t handler, void *ctx) -{ - struct queued_handler *qh; - - qh = snew(struct queued_handler); - qh->msg1 = msg1; - qh->msg2 = msg2; - qh->handler = handler; - qh->ctx = ctx; - qh->next = NULL; - - if (ssh->qtail == NULL) { - ssh->qhead = qh; - - if (qh->msg1 > 0) { - assert(ssh->packet_dispatch[qh->msg1] == NULL); - ssh->packet_dispatch[qh->msg1] = ssh_queueing_handler; - } - if (qh->msg2 > 0) { - assert(ssh->packet_dispatch[qh->msg2] == NULL); - ssh->packet_dispatch[qh->msg2] = ssh_queueing_handler; - } - } else { - ssh->qtail->next = qh; - } - ssh->qtail = qh; -} - -static void ssh_rportfwd_succfail(Ssh ssh, struct Packet *pktin, void *ctx) -{ - struct ssh_rportfwd *rpf, *pf = (struct ssh_rportfwd *)ctx; - - if (pktin->type == (ssh->version == 1 ? SSH1_SMSG_SUCCESS : - SSH2_MSG_REQUEST_SUCCESS)) { - logeventf(ssh, "Remote port forwarding from %s enabled", - pf->sportdesc); - } else { - logeventf(ssh, "Remote port forwarding from %s refused", - pf->sportdesc); - - rpf = del234(ssh->rportfwds, pf); - assert(rpf == pf); - free_rportfwd(pf); - } -} - -static void ssh_setup_portfwd(Ssh ssh, const Config *cfg) -{ - const char *portfwd_strptr = cfg->portfwd; - struct ssh_portfwd *epf; - int i; - - if (!ssh->portfwds) { - ssh->portfwds = newtree234(ssh_portcmp); - } else { - /* - * Go through the existing port forwardings and tag them - * with status==DESTROY. Any that we want to keep will be - * re-enabled (status==KEEP) as we go through the - * configuration and find out which bits are the same as - * they were before. - */ - struct ssh_portfwd *epf; - int i; - for (i = 0; (epf = index234(ssh->portfwds, i)) != NULL; i++) - epf->status = DESTROY; - } - - while (*portfwd_strptr) { - char address_family, type; - int sport,dport,sserv,dserv; - char sports[256], dports[256], saddr[256], host[256]; - int n; - - address_family = 'A'; - type = 'L'; - if (*portfwd_strptr == 'A' || - *portfwd_strptr == '4' || - *portfwd_strptr == '6') - address_family = *portfwd_strptr++; - if (*portfwd_strptr == 'L' || - *portfwd_strptr == 'R' || - *portfwd_strptr == 'D') - type = *portfwd_strptr++; - - saddr[0] = '\0'; - - n = 0; - while (*portfwd_strptr && *portfwd_strptr != '\t') { - if (*portfwd_strptr == ':') { - /* - * We've seen a colon in the middle of the - * source port number. This means that - * everything we've seen until now is the - * source _address_, so we'll move it into - * saddr and start sports from the beginning - * again. - */ - portfwd_strptr++; - sports[n] = '\0'; - if (ssh->version == 1 && type == 'R') { - logeventf(ssh, "SSH-1 cannot handle remote source address " - "spec \"%s\"; ignoring", sports); - } else - strcpy(saddr, sports); - n = 0; - } - if (n < lenof(sports)-1) sports[n++] = *portfwd_strptr++; - } - sports[n] = 0; - if (type != 'D') { - if (*portfwd_strptr == '\t') - portfwd_strptr++; - n = 0; - while (*portfwd_strptr && *portfwd_strptr != ':') { - if (n < lenof(host)-1) host[n++] = *portfwd_strptr++; - } - host[n] = 0; - if (*portfwd_strptr == ':') - portfwd_strptr++; - n = 0; - while (*portfwd_strptr) { - if (n < lenof(dports)-1) dports[n++] = *portfwd_strptr++; - } - dports[n] = 0; - portfwd_strptr++; - dport = atoi(dports); - dserv = 0; - if (dport == 0) { - dserv = 1; - dport = net_service_lookup(dports); - if (!dport) { - logeventf(ssh, "Service lookup failed for destination" - " port \"%s\"", dports); - } - } - } else { - while (*portfwd_strptr) portfwd_strptr++; - host[0] = 0; - dports[0] = 0; - dport = dserv = -1; - portfwd_strptr++; /* eat the NUL and move to next one */ - } - sport = atoi(sports); - sserv = 0; - if (sport == 0) { - sserv = 1; - sport = net_service_lookup(sports); - if (!sport) { - logeventf(ssh, "Service lookup failed for source" - " port \"%s\"", sports); - } - } - if (sport && dport) { - /* Set up a description of the source port. */ - struct ssh_portfwd *pfrec, *epfrec; - - pfrec = snew(struct ssh_portfwd); - pfrec->type = type; - pfrec->saddr = *saddr ? dupstr(saddr) : NULL; - pfrec->sserv = sserv ? dupstr(sports) : NULL; - pfrec->sport = sport; - pfrec->daddr = *host ? dupstr(host) : NULL; - pfrec->dserv = dserv ? dupstr(dports) : NULL; - pfrec->dport = dport; - pfrec->local = NULL; - pfrec->remote = NULL; - pfrec->addressfamily = (address_family == '4' ? ADDRTYPE_IPV4 : - address_family == '6' ? ADDRTYPE_IPV6 : - ADDRTYPE_UNSPEC); - - epfrec = add234(ssh->portfwds, pfrec); - if (epfrec != pfrec) { - /* - * We already have a port forwarding with precisely - * these parameters. Hence, no need to do anything; - * simply tag the existing one as KEEP. - */ - epfrec->status = KEEP; - free_portfwd(pfrec); - } else { - pfrec->status = CREATE; - } - } - } - - /* - * Now go through and destroy any port forwardings which were - * not re-enabled. - */ - for (i = 0; (epf = index234(ssh->portfwds, i)) != NULL; i++) - if (epf->status == DESTROY) { - char *message; - - message = dupprintf("%s port forwarding from %s%s%d", - epf->type == 'L' ? "local" : - epf->type == 'R' ? "remote" : "dynamic", - epf->saddr ? epf->saddr : "", - epf->saddr ? ":" : "", - epf->sport); - - if (epf->type != 'D') { - char *msg2 = dupprintf("%s to %s:%d", message, - epf->daddr, epf->dport); - sfree(message); - message = msg2; - } - - logeventf(ssh, "Cancelling %s", message); - sfree(message); - - if (epf->remote) { - struct ssh_rportfwd *rpf = epf->remote; - struct Packet *pktout; - - /* - * Cancel the port forwarding at the server - * end. - */ - if (ssh->version == 1) { - /* - * We cannot cancel listening ports on the - * server side in SSH-1! There's no message - * to support it. Instead, we simply remove - * the rportfwd record from the local end - * so that any connections the server tries - * to make on it are rejected. - */ - } else { - pktout = ssh2_pkt_init(SSH2_MSG_GLOBAL_REQUEST); - ssh2_pkt_addstring(pktout, "cancel-tcpip-forward"); - ssh2_pkt_addbool(pktout, 0);/* _don't_ want reply */ - if (epf->saddr) { - ssh2_pkt_addstring(pktout, epf->saddr); - } else if (ssh->cfg.rport_acceptall) { - /* XXX: ssh->cfg.rport_acceptall may not represent - * what was used to open the original connection, - * since it's reconfigurable. */ - ssh2_pkt_addstring(pktout, "0.0.0.0"); - } else { - ssh2_pkt_addstring(pktout, "127.0.0.1"); - } - ssh2_pkt_adduint32(pktout, epf->sport); - ssh2_pkt_send(ssh, pktout); - } - - del234(ssh->rportfwds, rpf); - free_rportfwd(rpf); - } else if (epf->local) { - pfd_terminate(epf->local); - } - - delpos234(ssh->portfwds, i); - free_portfwd(epf); - i--; /* so we don't skip one in the list */ - } - - /* - * And finally, set up any new port forwardings (status==CREATE). - */ - for (i = 0; (epf = index234(ssh->portfwds, i)) != NULL; i++) - if (epf->status == CREATE) { - char *sportdesc, *dportdesc; - sportdesc = dupprintf("%s%s%s%s%d%s", - epf->saddr ? epf->saddr : "", - epf->saddr ? ":" : "", - epf->sserv ? epf->sserv : "", - epf->sserv ? "(" : "", - epf->sport, - epf->sserv ? ")" : ""); - if (epf->type == 'D') { - dportdesc = NULL; - } else { - dportdesc = dupprintf("%s:%s%s%d%s", - epf->daddr, - epf->dserv ? epf->dserv : "", - epf->dserv ? "(" : "", - epf->dport, - epf->dserv ? ")" : ""); - } - - if (epf->type == 'L') { - const char *err = pfd_addforward(epf->daddr, epf->dport, - epf->saddr, epf->sport, - ssh, cfg, - &epf->local, - epf->addressfamily); - - logeventf(ssh, "Local %sport %s forwarding to %s%s%s", - epf->addressfamily == ADDRTYPE_IPV4 ? "IPv4 " : - epf->addressfamily == ADDRTYPE_IPV6 ? "IPv6 " : "", - sportdesc, dportdesc, - err ? " failed: " : "", err ? err : ""); - } else if (epf->type == 'D') { - const char *err = pfd_addforward(NULL, -1, - epf->saddr, epf->sport, - ssh, cfg, - &epf->local, - epf->addressfamily); - - logeventf(ssh, "Local %sport %s SOCKS dynamic forwarding%s%s", - epf->addressfamily == ADDRTYPE_IPV4 ? "IPv4 " : - epf->addressfamily == ADDRTYPE_IPV6 ? "IPv6 " : "", - sportdesc, - err ? " failed: " : "", err ? err : ""); - } else { - struct ssh_rportfwd *pf; - - /* - * Ensure the remote port forwardings tree exists. - */ - if (!ssh->rportfwds) { - if (ssh->version == 1) - ssh->rportfwds = newtree234(ssh_rportcmp_ssh1); - else - ssh->rportfwds = newtree234(ssh_rportcmp_ssh2); - } - - pf = snew(struct ssh_rportfwd); - strncpy(pf->dhost, epf->daddr, lenof(pf->dhost)-1); - pf->dhost[lenof(pf->dhost)-1] = '\0'; - pf->dport = epf->dport; - pf->sport = epf->sport; - if (add234(ssh->rportfwds, pf) != pf) { - logeventf(ssh, "Duplicate remote port forwarding to %s:%d", - epf->daddr, epf->dport); - sfree(pf); - } else { - logeventf(ssh, "Requesting remote port %s" - " forward to %s", sportdesc, dportdesc); - - pf->sportdesc = sportdesc; - sportdesc = NULL; - epf->remote = pf; - pf->pfrec = epf; - - if (ssh->version == 1) { - send_packet(ssh, SSH1_CMSG_PORT_FORWARD_REQUEST, - PKT_INT, epf->sport, - PKT_STR, epf->daddr, - PKT_INT, epf->dport, - PKT_END); - ssh_queue_handler(ssh, SSH1_SMSG_SUCCESS, - SSH1_SMSG_FAILURE, - ssh_rportfwd_succfail, pf); - } else { - struct Packet *pktout; - pktout = ssh2_pkt_init(SSH2_MSG_GLOBAL_REQUEST); - ssh2_pkt_addstring(pktout, "tcpip-forward"); - ssh2_pkt_addbool(pktout, 1);/* want reply */ - if (epf->saddr) { - ssh2_pkt_addstring(pktout, epf->saddr); - } else if (cfg->rport_acceptall) { - ssh2_pkt_addstring(pktout, "0.0.0.0"); - } else { - ssh2_pkt_addstring(pktout, "127.0.0.1"); - } - ssh2_pkt_adduint32(pktout, epf->sport); - ssh2_pkt_send(ssh, pktout); - - ssh_queue_handler(ssh, SSH2_MSG_REQUEST_SUCCESS, - SSH2_MSG_REQUEST_FAILURE, - ssh_rportfwd_succfail, pf); - } - } - } - sfree(sportdesc); - sfree(dportdesc); - } -} - -static void ssh1_smsg_stdout_stderr_data(Ssh ssh, struct Packet *pktin) -{ - char *string; - int stringlen, bufsize; - - ssh_pkt_getstring(pktin, &string, &stringlen); - if (string == NULL) { - bombout(("Incoming terminal data packet was badly formed")); - return; - } - - bufsize = from_backend(ssh->frontend, pktin->type == SSH1_SMSG_STDERR_DATA, - string, stringlen); - if (!ssh->v1_stdout_throttling && bufsize > SSH1_BUFFER_LIMIT) { - ssh->v1_stdout_throttling = 1; - ssh_throttle_conn(ssh, +1); - } -} - -static void ssh1_smsg_x11_open(Ssh ssh, struct Packet *pktin) -{ - /* Remote side is trying to open a channel to talk to our - * X-Server. Give them back a local channel number. */ - struct ssh_channel *c; - int remoteid = ssh_pkt_getuint32(pktin); - - logevent("Received X11 connect request"); - /* Refuse if X11 forwarding is disabled. */ - if (!ssh->X11_fwd_enabled) { - send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_FAILURE, - PKT_INT, remoteid, PKT_END); - logevent("Rejected X11 connect request"); - } else { - c = snew(struct ssh_channel); - c->ssh = ssh; - - if (x11_init(&c->u.x11.s, ssh->x11disp, c, - NULL, -1, &ssh->cfg) != NULL) { - logevent("Opening X11 forward connection failed"); - sfree(c); - send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_FAILURE, - PKT_INT, remoteid, PKT_END); - } else { - logevent - ("Opening X11 forward connection succeeded"); - c->remoteid = remoteid; - c->halfopen = FALSE; - c->localid = alloc_channel_id(ssh); - c->closes = 0; - c->throttling_conn = 0; - c->type = CHAN_X11; /* identify channel type */ - add234(ssh->channels, c); - send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_CONFIRMATION, - PKT_INT, c->remoteid, PKT_INT, - c->localid, PKT_END); - logevent("Opened X11 forward channel"); - } - } -} - -static void ssh1_smsg_agent_open(Ssh ssh, struct Packet *pktin) -{ - /* Remote side is trying to open a channel to talk to our - * agent. Give them back a local channel number. */ - struct ssh_channel *c; - int remoteid = ssh_pkt_getuint32(pktin); - - /* Refuse if agent forwarding is disabled. */ - if (!ssh->agentfwd_enabled) { - send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_FAILURE, - PKT_INT, remoteid, PKT_END); - } else { - c = snew(struct ssh_channel); - c->ssh = ssh; - c->remoteid = remoteid; - c->halfopen = FALSE; - c->localid = alloc_channel_id(ssh); - c->closes = 0; - c->throttling_conn = 0; - c->type = CHAN_AGENT; /* identify channel type */ - c->u.a.lensofar = 0; - add234(ssh->channels, c); - send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_CONFIRMATION, - PKT_INT, c->remoteid, PKT_INT, c->localid, - PKT_END); - } -} - -static void ssh1_msg_port_open(Ssh ssh, struct Packet *pktin) -{ - /* Remote side is trying to open a channel to talk to a - * forwarded port. Give them back a local channel number. */ - struct ssh_channel *c; - struct ssh_rportfwd pf, *pfp; - int remoteid; - int hostsize, port; - char *host; - const char *e; - c = snew(struct ssh_channel); - c->ssh = ssh; - - remoteid = ssh_pkt_getuint32(pktin); - ssh_pkt_getstring(pktin, &host, &hostsize); - port = ssh_pkt_getuint32(pktin); - - if (hostsize >= lenof(pf.dhost)) - hostsize = lenof(pf.dhost)-1; - memcpy(pf.dhost, host, hostsize); - pf.dhost[hostsize] = '\0'; - pf.dport = port; - pfp = find234(ssh->rportfwds, &pf, NULL); - - if (pfp == NULL) { - logeventf(ssh, "Rejected remote port open request for %s:%d", - pf.dhost, port); - send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_FAILURE, - PKT_INT, remoteid, PKT_END); - } else { - logeventf(ssh, "Received remote port open request for %s:%d", - pf.dhost, port); - e = pfd_newconnect(&c->u.pfd.s, pf.dhost, port, - c, &ssh->cfg, pfp->pfrec->addressfamily); - if (e != NULL) { - logeventf(ssh, "Port open failed: %s", e); - sfree(c); - send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_FAILURE, - PKT_INT, remoteid, PKT_END); - } else { - c->remoteid = remoteid; - c->halfopen = FALSE; - c->localid = alloc_channel_id(ssh); - c->closes = 0; - c->throttling_conn = 0; - c->type = CHAN_SOCKDATA; /* identify channel type */ - add234(ssh->channels, c); - send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_CONFIRMATION, - PKT_INT, c->remoteid, PKT_INT, - c->localid, PKT_END); - logevent("Forwarded port opened successfully"); - } - } -} - -static void ssh1_msg_channel_open_confirmation(Ssh ssh, struct Packet *pktin) -{ - unsigned int remoteid = ssh_pkt_getuint32(pktin); - unsigned int localid = ssh_pkt_getuint32(pktin); - struct ssh_channel *c; - - c = find234(ssh->channels, &remoteid, ssh_channelfind); - if (c && c->type == CHAN_SOCKDATA_DORMANT) { - c->remoteid = localid; - c->halfopen = FALSE; - c->type = CHAN_SOCKDATA; - c->throttling_conn = 0; - pfd_confirm(c->u.pfd.s); - } - - if (c && c->closes) { - /* - * We have a pending close on this channel, - * which we decided on before the server acked - * the channel open. So now we know the - * remoteid, we can close it again. - */ - send_packet(ssh, SSH1_MSG_CHANNEL_CLOSE, - PKT_INT, c->remoteid, PKT_END); - } -} - -static void ssh1_msg_channel_open_failure(Ssh ssh, struct Packet *pktin) -{ - unsigned int remoteid = ssh_pkt_getuint32(pktin); - struct ssh_channel *c; - - c = find234(ssh->channels, &remoteid, ssh_channelfind); - if (c && c->type == CHAN_SOCKDATA_DORMANT) { - logevent("Forwarded connection refused by server"); - pfd_close(c->u.pfd.s); - del234(ssh->channels, c); - sfree(c); - } -} - -static void ssh1_msg_channel_close(Ssh ssh, struct Packet *pktin) -{ - /* Remote side closes a channel. */ - unsigned i = ssh_pkt_getuint32(pktin); - struct ssh_channel *c; - c = find234(ssh->channels, &i, ssh_channelfind); - if (c && !c->halfopen) { - int closetype; - closetype = - (pktin->type == SSH1_MSG_CHANNEL_CLOSE ? 1 : 2); - - if ((c->closes == 0) && (c->type == CHAN_X11)) { - logevent("Forwarded X11 connection terminated"); - assert(c->u.x11.s != NULL); - x11_close(c->u.x11.s); - c->u.x11.s = NULL; - } - if ((c->closes == 0) && (c->type == CHAN_SOCKDATA)) { - logevent("Forwarded port closed"); - assert(c->u.pfd.s != NULL); - pfd_close(c->u.pfd.s); - c->u.pfd.s = NULL; - } - - c->closes |= (closetype << 2); /* seen this message */ - if (!(c->closes & closetype)) { - send_packet(ssh, pktin->type, PKT_INT, c->remoteid, - PKT_END); - c->closes |= closetype; /* sent it too */ - } - - if (c->closes == 15) { - del234(ssh->channels, c); - sfree(c); - } - } else { - bombout(("Received CHANNEL_CLOSE%s for %s channel %d\n", - pktin->type == SSH1_MSG_CHANNEL_CLOSE ? "" : - "_CONFIRMATION", c ? "half-open" : "nonexistent", - i)); - } -} - -static void ssh1_msg_channel_data(Ssh ssh, struct Packet *pktin) -{ - /* Data sent down one of our channels. */ - int i = ssh_pkt_getuint32(pktin); - char *p; - int len; - struct ssh_channel *c; - - ssh_pkt_getstring(pktin, &p, &len); - - c = find234(ssh->channels, &i, ssh_channelfind); - if (c) { - int bufsize = 0; - switch (c->type) { - case CHAN_X11: - bufsize = x11_send(c->u.x11.s, p, len); - break; - case CHAN_SOCKDATA: - bufsize = pfd_send(c->u.pfd.s, p, len); - break; - case CHAN_AGENT: - /* Data for an agent message. Buffer it. */ - while (len > 0) { - if (c->u.a.lensofar < 4) { - unsigned int l = min(4 - c->u.a.lensofar, (unsigned)len); - memcpy(c->u.a.msglen + c->u.a.lensofar, p, - l); - p += l; - len -= l; - c->u.a.lensofar += l; - } - if (c->u.a.lensofar == 4) { - c->u.a.totallen = - 4 + GET_32BIT(c->u.a.msglen); - c->u.a.message = snewn(c->u.a.totallen, - unsigned char); - memcpy(c->u.a.message, c->u.a.msglen, 4); - } - if (c->u.a.lensofar >= 4 && len > 0) { - unsigned int l = - min(c->u.a.totallen - c->u.a.lensofar, - (unsigned)len); - memcpy(c->u.a.message + c->u.a.lensofar, p, - l); - p += l; - len -= l; - c->u.a.lensofar += l; - } - if (c->u.a.lensofar == c->u.a.totallen) { - void *reply; - int replylen; - if (agent_query(c->u.a.message, - c->u.a.totallen, - &reply, &replylen, - ssh_agentf_callback, c)) - ssh_agentf_callback(c, reply, replylen); - sfree(c->u.a.message); - c->u.a.lensofar = 0; - } - } - bufsize = 0; /* agent channels never back up */ - break; - } - if (!c->throttling_conn && bufsize > SSH1_BUFFER_LIMIT) { - c->throttling_conn = 1; - ssh_throttle_conn(ssh, +1); - } - } -} - -static void ssh1_smsg_exit_status(Ssh ssh, struct Packet *pktin) -{ - ssh->exitcode = ssh_pkt_getuint32(pktin); - logeventf(ssh, "Server sent command exit status %d", ssh->exitcode); - send_packet(ssh, SSH1_CMSG_EXIT_CONFIRMATION, PKT_END); - /* - * In case `helpful' firewalls or proxies tack - * extra human-readable text on the end of the - * session which we might mistake for another - * encrypted packet, we close the session once - * we've sent EXIT_CONFIRMATION. - */ - ssh_disconnect(ssh, NULL, NULL, 0, TRUE); -} - -/* Helper function to deal with sending tty modes for REQUEST_PTY */ -static void ssh1_send_ttymode(void *data, char *mode, char *val) -{ - struct Packet *pktout = (struct Packet *)data; - int i = 0; - unsigned int arg = 0; - while (strcmp(mode, ssh_ttymodes[i].mode) != 0) i++; - if (i == lenof(ssh_ttymodes)) return; - switch (ssh_ttymodes[i].type) { - case TTY_OP_CHAR: - arg = ssh_tty_parse_specchar(val); - break; - case TTY_OP_BOOL: - arg = ssh_tty_parse_boolean(val); - break; - } - ssh2_pkt_addbyte(pktout, ssh_ttymodes[i].opcode); - ssh2_pkt_addbyte(pktout, arg); -} - - -static void do_ssh1_connection(Ssh ssh, unsigned char *in, int inlen, - struct Packet *pktin) -{ - crBegin(ssh->do_ssh1_connection_crstate); - - ssh->packet_dispatch[SSH1_SMSG_STDOUT_DATA] = - ssh->packet_dispatch[SSH1_SMSG_STDERR_DATA] = - ssh1_smsg_stdout_stderr_data; - - ssh->packet_dispatch[SSH1_MSG_CHANNEL_OPEN_CONFIRMATION] = - ssh1_msg_channel_open_confirmation; - ssh->packet_dispatch[SSH1_MSG_CHANNEL_OPEN_FAILURE] = - ssh1_msg_channel_open_failure; - ssh->packet_dispatch[SSH1_MSG_CHANNEL_CLOSE] = - ssh->packet_dispatch[SSH1_MSG_CHANNEL_CLOSE_CONFIRMATION] = - ssh1_msg_channel_close; - ssh->packet_dispatch[SSH1_MSG_CHANNEL_DATA] = ssh1_msg_channel_data; - ssh->packet_dispatch[SSH1_SMSG_EXIT_STATUS] = ssh1_smsg_exit_status; - - if (ssh->cfg.agentfwd && agent_exists()) { - logevent("Requesting agent forwarding"); - send_packet(ssh, SSH1_CMSG_AGENT_REQUEST_FORWARDING, PKT_END); - do { - crReturnV; - } while (!pktin); - if (pktin->type != SSH1_SMSG_SUCCESS - && pktin->type != SSH1_SMSG_FAILURE) { - bombout(("Protocol confusion")); - crStopV; - } else if (pktin->type == SSH1_SMSG_FAILURE) { - logevent("Agent forwarding refused"); - } else { - logevent("Agent forwarding enabled"); - ssh->agentfwd_enabled = TRUE; - ssh->packet_dispatch[SSH1_SMSG_AGENT_OPEN] = ssh1_smsg_agent_open; - } - } - - if (ssh->cfg.x11_forward && - (ssh->x11disp = x11_setup_display(ssh->cfg.x11_display, - ssh->cfg.x11_auth, &ssh->cfg))) { - logevent("Requesting X11 forwarding"); - /* - * Note that while we blank the X authentication data here, we don't - * take any special action to blank the start of an X11 channel, - * so using MIT-MAGIC-COOKIE-1 and actually opening an X connection - * without having session blanking enabled is likely to leak your - * cookie into the log. - */ - if (ssh->v1_local_protoflags & SSH1_PROTOFLAG_SCREEN_NUMBER) { - send_packet(ssh, SSH1_CMSG_X11_REQUEST_FORWARDING, - PKT_STR, ssh->x11disp->remoteauthprotoname, - PKTT_PASSWORD, - PKT_STR, ssh->x11disp->remoteauthdatastring, - PKTT_OTHER, - PKT_INT, ssh->x11disp->screennum, - PKT_END); - } else { - send_packet(ssh, SSH1_CMSG_X11_REQUEST_FORWARDING, - PKT_STR, ssh->x11disp->remoteauthprotoname, - PKTT_PASSWORD, - PKT_STR, ssh->x11disp->remoteauthdatastring, - PKTT_OTHER, - PKT_END); - } - do { - crReturnV; - } while (!pktin); - if (pktin->type != SSH1_SMSG_SUCCESS - && pktin->type != SSH1_SMSG_FAILURE) { - bombout(("Protocol confusion")); - crStopV; - } else if (pktin->type == SSH1_SMSG_FAILURE) { - logevent("X11 forwarding refused"); - } else { - logevent("X11 forwarding enabled"); - ssh->X11_fwd_enabled = TRUE; - ssh->packet_dispatch[SSH1_SMSG_X11_OPEN] = ssh1_smsg_x11_open; - } - } - - ssh_setup_portfwd(ssh, &ssh->cfg); - ssh->packet_dispatch[SSH1_MSG_PORT_OPEN] = ssh1_msg_port_open; - - if (!ssh->cfg.nopty) { - struct Packet *pkt; - /* Unpick the terminal-speed string. */ - /* XXX perhaps we should allow no speeds to be sent. */ - ssh->ospeed = 38400; ssh->ispeed = 38400; /* last-resort defaults */ - sscanf(ssh->cfg.termspeed, "%d,%d", &ssh->ospeed, &ssh->ispeed); - /* Send the pty request. */ - pkt = ssh1_pkt_init(SSH1_CMSG_REQUEST_PTY); - ssh_pkt_addstring(pkt, ssh->cfg.termtype); - ssh_pkt_adduint32(pkt, ssh->term_height); - ssh_pkt_adduint32(pkt, ssh->term_width); - ssh_pkt_adduint32(pkt, 0); /* width in pixels */ - ssh_pkt_adduint32(pkt, 0); /* height in pixels */ - parse_ttymodes(ssh, ssh->cfg.ttymodes, - ssh1_send_ttymode, (void *)pkt); - ssh_pkt_addbyte(pkt, SSH1_TTY_OP_ISPEED); - ssh_pkt_adduint32(pkt, ssh->ispeed); - ssh_pkt_addbyte(pkt, SSH1_TTY_OP_OSPEED); - ssh_pkt_adduint32(pkt, ssh->ospeed); - ssh_pkt_addbyte(pkt, SSH_TTY_OP_END); - s_wrpkt(ssh, pkt); - ssh->state = SSH_STATE_INTERMED; - do { - crReturnV; - } while (!pktin); - if (pktin->type != SSH1_SMSG_SUCCESS - && pktin->type != SSH1_SMSG_FAILURE) { - bombout(("Protocol confusion")); - crStopV; - } else if (pktin->type == SSH1_SMSG_FAILURE) { - c_write_str(ssh, "Server refused to allocate pty\r\n"); - ssh->editing = ssh->echoing = 1; - } - logeventf(ssh, "Allocated pty (ospeed %dbps, ispeed %dbps)", - ssh->ospeed, ssh->ispeed); - } else { - ssh->editing = ssh->echoing = 1; - } - - if (ssh->cfg.compression) { - send_packet(ssh, SSH1_CMSG_REQUEST_COMPRESSION, PKT_INT, 6, PKT_END); - do { - crReturnV; - } while (!pktin); - if (pktin->type != SSH1_SMSG_SUCCESS - && pktin->type != SSH1_SMSG_FAILURE) { - bombout(("Protocol confusion")); - crStopV; - } else if (pktin->type == SSH1_SMSG_FAILURE) { - c_write_str(ssh, "Server refused to compress\r\n"); - } - logevent("Started compression"); - ssh->v1_compressing = TRUE; - ssh->cs_comp_ctx = zlib_compress_init(); - logevent("Initialised zlib (RFC1950) compression"); - ssh->sc_comp_ctx = zlib_decompress_init(); - logevent("Initialised zlib (RFC1950) decompression"); - } - - /* - * Start the shell or command. - * - * Special case: if the first-choice command is an SSH-2 - * subsystem (hence not usable here) and the second choice - * exists, we fall straight back to that. - */ - { - char *cmd = ssh->cfg.remote_cmd_ptr; - - if (!cmd) cmd = ssh->cfg.remote_cmd; - - if (ssh->cfg.ssh_subsys && ssh->cfg.remote_cmd_ptr2) { - cmd = ssh->cfg.remote_cmd_ptr2; - ssh->fallback_cmd = TRUE; - } - if (*cmd) - send_packet(ssh, SSH1_CMSG_EXEC_CMD, PKT_STR, cmd, PKT_END); - else - send_packet(ssh, SSH1_CMSG_EXEC_SHELL, PKT_END); - logevent("Started session"); - } - - ssh->state = SSH_STATE_SESSION; - if (ssh->size_needed) - ssh_size(ssh, ssh->term_width, ssh->term_height); - if (ssh->eof_needed) - ssh_special(ssh, TS_EOF); - - if (ssh->ldisc) - ldisc_send(ssh->ldisc, NULL, 0, 0);/* cause ldisc to notice changes */ - ssh->send_ok = 1; - ssh->channels = newtree234(ssh_channelcmp); - while (1) { - - /* - * By this point, most incoming packets are already being - * handled by the dispatch table, and we need only pay - * attention to the unusual ones. - */ - - crReturnV; - if (pktin) { - if (pktin->type == SSH1_SMSG_SUCCESS) { - /* may be from EXEC_SHELL on some servers */ - } else if (pktin->type == SSH1_SMSG_FAILURE) { - /* may be from EXEC_SHELL on some servers - * if no pty is available or in other odd cases. Ignore */ - } else { - bombout(("Strange packet received: type %d", pktin->type)); - crStopV; - } - } else { - while (inlen > 0) { - int len = min(inlen, 512); - send_packet(ssh, SSH1_CMSG_STDIN_DATA, - PKT_INT, len, PKTT_DATA, PKT_DATA, in, len, - PKTT_OTHER, PKT_END); - in += len; - inlen -= len; - } - } - } - - crFinishV; -} - -/* - * Handle the top-level SSH-2 protocol. - */ -static void ssh1_msg_debug(Ssh ssh, struct Packet *pktin) -{ - char *msg; - int msglen; - - ssh_pkt_getstring(pktin, &msg, &msglen); - logeventf(ssh, "Remote debug message: %.*s", msglen, msg); -} - -static void ssh1_msg_disconnect(Ssh ssh, struct Packet *pktin) -{ - /* log reason code in disconnect message */ - char *msg; - int msglen; - - ssh_pkt_getstring(pktin, &msg, &msglen); - bombout(("Server sent disconnect message:\n\"%.*s\"", msglen, msg)); -} - -static void ssh_msg_ignore(Ssh ssh, struct Packet *pktin) -{ - /* Do nothing, because we're ignoring it! Duhh. */ -} - -static void ssh1_protocol_setup(Ssh ssh) -{ - int i; - - /* - * Most messages are handled by the coroutines. - */ - for (i = 0; i < 256; i++) - ssh->packet_dispatch[i] = NULL; - - /* - * These special message types we install handlers for. - */ - ssh->packet_dispatch[SSH1_MSG_DISCONNECT] = ssh1_msg_disconnect; - ssh->packet_dispatch[SSH1_MSG_IGNORE] = ssh_msg_ignore; - ssh->packet_dispatch[SSH1_MSG_DEBUG] = ssh1_msg_debug; -} - -static void ssh1_protocol(Ssh ssh, void *vin, int inlen, - struct Packet *pktin) -{ - unsigned char *in=(unsigned char*)vin; - if (ssh->state == SSH_STATE_CLOSED) - return; - - if (pktin && ssh->packet_dispatch[pktin->type]) { - ssh->packet_dispatch[pktin->type](ssh, pktin); - return; - } - - if (!ssh->protocol_initial_phase_done) { - if (do_ssh1_login(ssh, in, inlen, pktin)) - ssh->protocol_initial_phase_done = TRUE; - else - return; - } - - do_ssh1_connection(ssh, in, inlen, pktin); -} - -/* - * Utility routine for decoding comma-separated strings in KEXINIT. - */ -static int in_commasep_string(char *needle, char *haystack, int haylen) -{ - int needlen; - if (!needle || !haystack) /* protect against null pointers */ - return 0; - needlen = strlen(needle); - while (1) { - /* - * Is it at the start of the string? - */ - if (haylen >= needlen && /* haystack is long enough */ - !memcmp(needle, haystack, needlen) && /* initial match */ - (haylen == needlen || haystack[needlen] == ',') - /* either , or EOS follows */ - ) - return 1; - /* - * If not, search for the next comma and resume after that. - * If no comma found, terminate. - */ - while (haylen > 0 && *haystack != ',') - haylen--, haystack++; - if (haylen == 0) - return 0; - haylen--, haystack++; /* skip over comma itself */ - } -} - -/* - * Similar routine for checking whether we have the first string in a list. - */ -static int first_in_commasep_string(char *needle, char *haystack, int haylen) -{ - int needlen; - if (!needle || !haystack) /* protect against null pointers */ - return 0; - needlen = strlen(needle); - /* - * Is it at the start of the string? - */ - if (haylen >= needlen && /* haystack is long enough */ - !memcmp(needle, haystack, needlen) && /* initial match */ - (haylen == needlen || haystack[needlen] == ',') - /* either , or EOS follows */ - ) - return 1; - return 0; -} - - -/* - * SSH-2 key creation method. - * (Currently assumes 2 lots of any hash are sufficient to generate - * keys/IVs for any cipher/MAC. SSH2_MKKEY_ITERS documents this assumption.) - */ -#define SSH2_MKKEY_ITERS (2) -static void ssh2_mkkey(Ssh ssh, Bignum K, unsigned char *H, char chr, - unsigned char *keyspace) -{ - const struct ssh_hash *h = ssh->kex->hash; - void *s; - /* First hlen bytes. */ - s = h->init(); - if (!(ssh->remote_bugs & BUG_SSH2_DERIVEKEY)) - hash_mpint(h, s, K); - h->bytes(s, H, h->hlen); - h->bytes(s, &chr, 1); - h->bytes(s, ssh->v2_session_id, ssh->v2_session_id_len); - h->final(s, keyspace); - /* Next hlen bytes. */ - s = h->init(); - if (!(ssh->remote_bugs & BUG_SSH2_DERIVEKEY)) - hash_mpint(h, s, K); - h->bytes(s, H, h->hlen); - h->bytes(s, keyspace, h->hlen); - h->final(s, keyspace + h->hlen); -} - -/* - * Handle the SSH-2 transport layer. - */ -static int do_ssh2_transport(Ssh ssh, void *vin, int inlen, - struct Packet *pktin) -{ - unsigned char *in = (unsigned char *)vin; - struct do_ssh2_transport_state { - int nbits, pbits, warn_kex, warn_cscipher, warn_sccipher; - Bignum p, g, e, f, K; - void *our_kexinit; - int our_kexinitlen; - int kex_init_value, kex_reply_value; - const struct ssh_mac **maclist; - int nmacs; - const struct ssh2_cipher *cscipher_tobe; - const struct ssh2_cipher *sccipher_tobe; - const struct ssh_mac *csmac_tobe; - const struct ssh_mac *scmac_tobe; - const struct ssh_compress *cscomp_tobe; - const struct ssh_compress *sccomp_tobe; - char *hostkeydata, *sigdata, *rsakeydata, *keystr, *fingerprint; - int hostkeylen, siglen, rsakeylen; - void *hkey; /* actual host key */ - void *rsakey; /* for RSA kex */ - unsigned char exchange_hash[SSH2_KEX_MAX_HASH_LEN]; - int n_preferred_kex; - const struct ssh_kexes *preferred_kex[KEX_MAX]; - int n_preferred_ciphers; - const struct ssh2_ciphers *preferred_ciphers[CIPHER_MAX]; - const struct ssh_compress *preferred_comp; - int got_session_id, activated_authconn; - struct Packet *pktout; - int dlgret; - int guessok; - int ignorepkt; - }; - crState(do_ssh2_transport_state); - - crBegin(ssh->do_ssh2_transport_crstate); - - s->cscipher_tobe = s->sccipher_tobe = NULL; - s->csmac_tobe = s->scmac_tobe = NULL; - s->cscomp_tobe = s->sccomp_tobe = NULL; - - s->got_session_id = s->activated_authconn = FALSE; - - /* - * Be prepared to work around the buggy MAC problem. - */ - if (ssh->remote_bugs & BUG_SSH2_HMAC) - s->maclist = buggymacs, s->nmacs = lenof(buggymacs); - else - s->maclist = macs, s->nmacs = lenof(macs); - - begin_key_exchange: - ssh->pkt_kctx = SSH2_PKTCTX_NOKEX; - { - int i, j, commalist_started; - - /* - * Set up the preferred key exchange. (NULL => warn below here) - */ - s->n_preferred_kex = 0; - for (i = 0; i < KEX_MAX; i++) { - switch (ssh->cfg.ssh_kexlist[i]) { - case KEX_DHGEX: - s->preferred_kex[s->n_preferred_kex++] = - &ssh_diffiehellman_gex; - break; - case KEX_DHGROUP14: - s->preferred_kex[s->n_preferred_kex++] = - &ssh_diffiehellman_group14; - break; - case KEX_DHGROUP1: - s->preferred_kex[s->n_preferred_kex++] = - &ssh_diffiehellman_group1; - break; - case KEX_RSA: - s->preferred_kex[s->n_preferred_kex++] = - &ssh_rsa_kex; - break; - case KEX_WARN: - /* Flag for later. Don't bother if it's the last in - * the list. */ - if (i < KEX_MAX - 1) { - s->preferred_kex[s->n_preferred_kex++] = NULL; - } - break; - } - } - - /* - * Set up the preferred ciphers. (NULL => warn below here) - */ - s->n_preferred_ciphers = 0; - for (i = 0; i < CIPHER_MAX; i++) { - switch (ssh->cfg.ssh_cipherlist[i]) { - case CIPHER_BLOWFISH: - s->preferred_ciphers[s->n_preferred_ciphers++] = &ssh2_blowfish; - break; - case CIPHER_DES: - if (ssh->cfg.ssh2_des_cbc) { - s->preferred_ciphers[s->n_preferred_ciphers++] = &ssh2_des; - } - break; - case CIPHER_3DES: - s->preferred_ciphers[s->n_preferred_ciphers++] = &ssh2_3des; - break; - case CIPHER_AES: - s->preferred_ciphers[s->n_preferred_ciphers++] = &ssh2_aes; - break; - case CIPHER_ARCFOUR: - s->preferred_ciphers[s->n_preferred_ciphers++] = &ssh2_arcfour; - break; - case CIPHER_WARN: - /* Flag for later. Don't bother if it's the last in - * the list. */ - if (i < CIPHER_MAX - 1) { - s->preferred_ciphers[s->n_preferred_ciphers++] = NULL; - } - break; - } - } - - /* - * Set up preferred compression. - */ - if (ssh->cfg.compression) - s->preferred_comp = &ssh_zlib; - else - s->preferred_comp = &ssh_comp_none; - - /* - * Enable queueing of outgoing auth- or connection-layer - * packets while we are in the middle of a key exchange. - */ - ssh->queueing = TRUE; - - /* - * Flag that KEX is in progress. - */ - ssh->kex_in_progress = TRUE; - - /* - * Construct and send our key exchange packet. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_KEXINIT); - for (i = 0; i < 16; i++) - ssh2_pkt_addbyte(s->pktout, (unsigned char) random_byte()); - /* List key exchange algorithms. */ - ssh2_pkt_addstring_start(s->pktout); - commalist_started = 0; - for (i = 0; i < s->n_preferred_kex; i++) { - const struct ssh_kexes *k = s->preferred_kex[i]; - if (!k) continue; /* warning flag */ - for (j = 0; j < k->nkexes; j++) { - if (commalist_started) - ssh2_pkt_addstring_str(s->pktout, ","); - ssh2_pkt_addstring_str(s->pktout, k->list[j]->name); - commalist_started = 1; - } - } - /* List server host key algorithms. */ - ssh2_pkt_addstring_start(s->pktout); - for (i = 0; i < lenof(hostkey_algs); i++) { - ssh2_pkt_addstring_str(s->pktout, hostkey_algs[i]->name); - if (i < lenof(hostkey_algs) - 1) - ssh2_pkt_addstring_str(s->pktout, ","); - } - /* List client->server encryption algorithms. */ - ssh2_pkt_addstring_start(s->pktout); - commalist_started = 0; - for (i = 0; i < s->n_preferred_ciphers; i++) { - const struct ssh2_ciphers *c = s->preferred_ciphers[i]; - if (!c) continue; /* warning flag */ - for (j = 0; j < c->nciphers; j++) { - if (commalist_started) - ssh2_pkt_addstring_str(s->pktout, ","); - ssh2_pkt_addstring_str(s->pktout, c->list[j]->name); - commalist_started = 1; - } - } - /* List server->client encryption algorithms. */ - ssh2_pkt_addstring_start(s->pktout); - commalist_started = 0; - for (i = 0; i < s->n_preferred_ciphers; i++) { - const struct ssh2_ciphers *c = s->preferred_ciphers[i]; - if (!c) continue; /* warning flag */ - for (j = 0; j < c->nciphers; j++) { - if (commalist_started) - ssh2_pkt_addstring_str(s->pktout, ","); - ssh2_pkt_addstring_str(s->pktout, c->list[j]->name); - commalist_started = 1; - } - } - /* List client->server MAC algorithms. */ - ssh2_pkt_addstring_start(s->pktout); - for (i = 0; i < s->nmacs; i++) { - ssh2_pkt_addstring_str(s->pktout, s->maclist[i]->name); - if (i < s->nmacs - 1) - ssh2_pkt_addstring_str(s->pktout, ","); - } - /* List server->client MAC algorithms. */ - ssh2_pkt_addstring_start(s->pktout); - for (i = 0; i < s->nmacs; i++) { - ssh2_pkt_addstring_str(s->pktout, s->maclist[i]->name); - if (i < s->nmacs - 1) - ssh2_pkt_addstring_str(s->pktout, ","); - } - /* List client->server compression algorithms. */ - ssh2_pkt_addstring_start(s->pktout); - assert(lenof(compressions) > 1); - ssh2_pkt_addstring_str(s->pktout, s->preferred_comp->name); - for (i = 0; i < lenof(compressions); i++) { - const struct ssh_compress *c = compressions[i]; - if (c != s->preferred_comp) { - ssh2_pkt_addstring_str(s->pktout, ","); - ssh2_pkt_addstring_str(s->pktout, c->name); - } - } - /* List server->client compression algorithms. */ - ssh2_pkt_addstring_start(s->pktout); - assert(lenof(compressions) > 1); - ssh2_pkt_addstring_str(s->pktout, s->preferred_comp->name); - for (i = 0; i < lenof(compressions); i++) { - const struct ssh_compress *c = compressions[i]; - if (c != s->preferred_comp) { - ssh2_pkt_addstring_str(s->pktout, ","); - ssh2_pkt_addstring_str(s->pktout, c->name); - } - } - /* List client->server languages. Empty list. */ - ssh2_pkt_addstring_start(s->pktout); - /* List server->client languages. Empty list. */ - ssh2_pkt_addstring_start(s->pktout); - /* First KEX packet does _not_ follow, because we're not that brave. */ - ssh2_pkt_addbool(s->pktout, FALSE); - /* Reserved. */ - ssh2_pkt_adduint32(s->pktout, 0); - } - - s->our_kexinitlen = s->pktout->length - 5; - s->our_kexinit = snewn(s->our_kexinitlen, unsigned char); - memcpy(s->our_kexinit, s->pktout->data + 5, s->our_kexinitlen); - - ssh2_pkt_send_noqueue(ssh, s->pktout); - - if (!pktin) - crWaitUntil(pktin); - - /* - * Now examine the other side's KEXINIT to see what we're up - * to. - */ - { - char *str, *preferred; - int i, j, len; - - if (pktin->type != SSH2_MSG_KEXINIT) { - bombout(("expected key exchange packet from server")); - crStop(0); - } - ssh->kex = NULL; - ssh->hostkey = NULL; - s->cscipher_tobe = NULL; - s->sccipher_tobe = NULL; - s->csmac_tobe = NULL; - s->scmac_tobe = NULL; - s->cscomp_tobe = NULL; - s->sccomp_tobe = NULL; - s->warn_kex = s->warn_cscipher = s->warn_sccipher = FALSE; - - pktin->savedpos += 16; /* skip garbage cookie */ - ssh_pkt_getstring(pktin, &str, &len); /* key exchange algorithms */ - - preferred = NULL; - for (i = 0; i < s->n_preferred_kex; i++) { - const struct ssh_kexes *k = s->preferred_kex[i]; - if (!k) { - s->warn_kex = TRUE; - } else { - for (j = 0; j < k->nkexes; j++) { - if (!preferred) preferred = k->list[j]->name; - if (in_commasep_string(k->list[j]->name, str, len)) { - ssh->kex = k->list[j]; - break; - } - } - } - if (ssh->kex) - break; - } - if (!ssh->kex) { - bombout(("Couldn't agree a key exchange algorithm (available: %s)", - str ? str : "(null)")); - crStop(0); - } - /* - * Note that the server's guess is considered wrong if it doesn't match - * the first algorithm in our list, even if it's still the algorithm - * we end up using. - */ - s->guessok = first_in_commasep_string(preferred, str, len); - ssh_pkt_getstring(pktin, &str, &len); /* host key algorithms */ - for (i = 0; i < lenof(hostkey_algs); i++) { - if (in_commasep_string(hostkey_algs[i]->name, str, len)) { - ssh->hostkey = hostkey_algs[i]; - break; - } - } - s->guessok = s->guessok && - first_in_commasep_string(hostkey_algs[0]->name, str, len); - ssh_pkt_getstring(pktin, &str, &len); /* client->server cipher */ - for (i = 0; i < s->n_preferred_ciphers; i++) { - const struct ssh2_ciphers *c = s->preferred_ciphers[i]; - if (!c) { - s->warn_cscipher = TRUE; - } else { - for (j = 0; j < c->nciphers; j++) { - if (in_commasep_string(c->list[j]->name, str, len)) { - s->cscipher_tobe = c->list[j]; - break; - } - } - } - if (s->cscipher_tobe) - break; - } - if (!s->cscipher_tobe) { - bombout(("Couldn't agree a client-to-server cipher (available: %s)", - str ? str : "(null)")); - crStop(0); - } - - ssh_pkt_getstring(pktin, &str, &len); /* server->client cipher */ - for (i = 0; i < s->n_preferred_ciphers; i++) { - const struct ssh2_ciphers *c = s->preferred_ciphers[i]; - if (!c) { - s->warn_sccipher = TRUE; - } else { - for (j = 0; j < c->nciphers; j++) { - if (in_commasep_string(c->list[j]->name, str, len)) { - s->sccipher_tobe = c->list[j]; - break; - } - } - } - if (s->sccipher_tobe) - break; - } - if (!s->sccipher_tobe) { - bombout(("Couldn't agree a server-to-client cipher (available: %s)", - str ? str : "(null)")); - crStop(0); - } - - ssh_pkt_getstring(pktin, &str, &len); /* client->server mac */ - for (i = 0; i < s->nmacs; i++) { - if (in_commasep_string(s->maclist[i]->name, str, len)) { - s->csmac_tobe = s->maclist[i]; - break; - } - } - ssh_pkt_getstring(pktin, &str, &len); /* server->client mac */ - for (i = 0; i < s->nmacs; i++) { - if (in_commasep_string(s->maclist[i]->name, str, len)) { - s->scmac_tobe = s->maclist[i]; - break; - } - } - ssh_pkt_getstring(pktin, &str, &len); /* client->server compression */ - for (i = 0; i < lenof(compressions) + 1; i++) { - const struct ssh_compress *c = - i == 0 ? s->preferred_comp : compressions[i - 1]; - if (in_commasep_string(c->name, str, len)) { - s->cscomp_tobe = c; - break; - } - } - ssh_pkt_getstring(pktin, &str, &len); /* server->client compression */ - for (i = 0; i < lenof(compressions) + 1; i++) { - const struct ssh_compress *c = - i == 0 ? s->preferred_comp : compressions[i - 1]; - if (in_commasep_string(c->name, str, len)) { - s->sccomp_tobe = c; - break; - } - } - ssh_pkt_getstring(pktin, &str, &len); /* client->server language */ - ssh_pkt_getstring(pktin, &str, &len); /* server->client language */ - s->ignorepkt = ssh2_pkt_getbool(pktin) && !s->guessok; - - if (s->warn_kex) { - ssh_set_frozen(ssh, 1); - s->dlgret = askalg(ssh->frontend, "key-exchange algorithm", - ssh->kex->name, - ssh_dialog_callback, ssh); - if (s->dlgret < 0) { - do { - crReturn(0); - if (pktin) { - bombout(("Unexpected data from server while" - " waiting for user response")); - crStop(0); - } - } while (pktin || inlen > 0); - s->dlgret = ssh->user_response; - } - ssh_set_frozen(ssh, 0); - if (s->dlgret == 0) { - ssh_disconnect(ssh, "User aborted at kex warning", NULL, - 0, TRUE); - crStop(0); - } - } - - if (s->warn_cscipher) { - ssh_set_frozen(ssh, 1); - s->dlgret = askalg(ssh->frontend, - "client-to-server cipher", - s->cscipher_tobe->name, - ssh_dialog_callback, ssh); - if (s->dlgret < 0) { - do { - crReturn(0); - if (pktin) { - bombout(("Unexpected data from server while" - " waiting for user response")); - crStop(0); - } - } while (pktin || inlen > 0); - s->dlgret = ssh->user_response; - } - ssh_set_frozen(ssh, 0); - if (s->dlgret == 0) { - ssh_disconnect(ssh, "User aborted at cipher warning", NULL, - 0, TRUE); - crStop(0); - } - } - - if (s->warn_sccipher) { - ssh_set_frozen(ssh, 1); - s->dlgret = askalg(ssh->frontend, - "server-to-client cipher", - s->sccipher_tobe->name, - ssh_dialog_callback, ssh); - if (s->dlgret < 0) { - do { - crReturn(0); - if (pktin) { - bombout(("Unexpected data from server while" - " waiting for user response")); - crStop(0); - } - } while (pktin || inlen > 0); - s->dlgret = ssh->user_response; - } - ssh_set_frozen(ssh, 0); - if (s->dlgret == 0) { - ssh_disconnect(ssh, "User aborted at cipher warning", NULL, - 0, TRUE); - crStop(0); - } - } - - ssh->exhash = ssh->kex->hash->init(); - hash_string(ssh->kex->hash, ssh->exhash, ssh->v_c, strlen(ssh->v_c)); - hash_string(ssh->kex->hash, ssh->exhash, ssh->v_s, strlen(ssh->v_s)); - hash_string(ssh->kex->hash, ssh->exhash, - s->our_kexinit, s->our_kexinitlen); - sfree(s->our_kexinit); - if (pktin->length > 5) - hash_string(ssh->kex->hash, ssh->exhash, - pktin->data + 5, pktin->length - 5); - - if (s->ignorepkt) /* first_kex_packet_follows */ - crWaitUntil(pktin); /* Ignore packet */ - } - - if (ssh->kex->main_type == KEXTYPE_DH) { - /* - * Work out the number of bits of key we will need from the - * key exchange. We start with the maximum key length of - * either cipher... - */ - { - int csbits, scbits; - - csbits = s->cscipher_tobe->keylen; - scbits = s->sccipher_tobe->keylen; - s->nbits = (csbits > scbits ? csbits : scbits); - } - /* The keys only have hlen-bit entropy, since they're based on - * a hash. So cap the key size at hlen bits. */ - if (s->nbits > ssh->kex->hash->hlen * 8) - s->nbits = ssh->kex->hash->hlen * 8; - - /* - * If we're doing Diffie-Hellman group exchange, start by - * requesting a group. - */ - if (!ssh->kex->pdata) { - logevent("Doing Diffie-Hellman group exchange"); - ssh->pkt_kctx = SSH2_PKTCTX_DHGEX; - /* - * Work out how big a DH group we will need to allow that - * much data. - */ - s->pbits = 512 << ((s->nbits - 1) / 64); - s->pktout = ssh2_pkt_init(SSH2_MSG_KEX_DH_GEX_REQUEST); - ssh2_pkt_adduint32(s->pktout, s->pbits); - ssh2_pkt_send_noqueue(ssh, s->pktout); - - crWaitUntil(pktin); - if (pktin->type != SSH2_MSG_KEX_DH_GEX_GROUP) { - bombout(("expected key exchange group packet from server")); - crStop(0); - } - s->p = ssh2_pkt_getmp(pktin); - s->g = ssh2_pkt_getmp(pktin); - if (!s->p || !s->g) { - bombout(("unable to read mp-ints from incoming group packet")); - crStop(0); - } - ssh->kex_ctx = dh_setup_gex(s->p, s->g); - s->kex_init_value = SSH2_MSG_KEX_DH_GEX_INIT; - s->kex_reply_value = SSH2_MSG_KEX_DH_GEX_REPLY; - } else { - ssh->pkt_kctx = SSH2_PKTCTX_DHGROUP; - ssh->kex_ctx = dh_setup_group(ssh->kex); - s->kex_init_value = SSH2_MSG_KEXDH_INIT; - s->kex_reply_value = SSH2_MSG_KEXDH_REPLY; - logeventf(ssh, "Using Diffie-Hellman with standard group \"%s\"", - ssh->kex->groupname); - } - - logeventf(ssh, "Doing Diffie-Hellman key exchange with hash %s", - ssh->kex->hash->text_name); - /* - * Now generate and send e for Diffie-Hellman. - */ - set_busy_status(ssh->frontend, BUSY_CPU); /* this can take a while */ - s->e = dh_create_e(ssh->kex_ctx, s->nbits * 2); - s->pktout = ssh2_pkt_init(s->kex_init_value); - ssh2_pkt_addmp(s->pktout, s->e); - ssh2_pkt_send_noqueue(ssh, s->pktout); - - set_busy_status(ssh->frontend, BUSY_WAITING); /* wait for server */ - crWaitUntil(pktin); - if (pktin->type != s->kex_reply_value) { - bombout(("expected key exchange reply packet from server")); - crStop(0); - } - set_busy_status(ssh->frontend, BUSY_CPU); /* cogitate */ - ssh_pkt_getstring(pktin, &s->hostkeydata, &s->hostkeylen); - s->hkey = ssh->hostkey->newkey(s->hostkeydata, s->hostkeylen); - s->f = ssh2_pkt_getmp(pktin); - if (!s->f) { - bombout(("unable to parse key exchange reply packet")); - crStop(0); - } - ssh_pkt_getstring(pktin, &s->sigdata, &s->siglen); - - s->K = dh_find_K(ssh->kex_ctx, s->f); - - /* We assume everything from now on will be quick, and it might - * involve user interaction. */ - set_busy_status(ssh->frontend, BUSY_NOT); - - hash_string(ssh->kex->hash, ssh->exhash, s->hostkeydata, s->hostkeylen); - if (!ssh->kex->pdata) { - hash_uint32(ssh->kex->hash, ssh->exhash, s->pbits); - hash_mpint(ssh->kex->hash, ssh->exhash, s->p); - hash_mpint(ssh->kex->hash, ssh->exhash, s->g); - } - hash_mpint(ssh->kex->hash, ssh->exhash, s->e); - hash_mpint(ssh->kex->hash, ssh->exhash, s->f); - - dh_cleanup(ssh->kex_ctx); - freebn(s->f); - if (!ssh->kex->pdata) { - freebn(s->g); - freebn(s->p); - } - } else { - logeventf(ssh, "Doing RSA key exchange with hash %s", - ssh->kex->hash->text_name); - ssh->pkt_kctx = SSH2_PKTCTX_RSAKEX; - /* - * RSA key exchange. First expect a KEXRSA_PUBKEY packet - * from the server. - */ - crWaitUntil(pktin); - if (pktin->type != SSH2_MSG_KEXRSA_PUBKEY) { - bombout(("expected RSA public key packet from server")); - crStop(0); - } - - ssh_pkt_getstring(pktin, &s->hostkeydata, &s->hostkeylen); - hash_string(ssh->kex->hash, ssh->exhash, - s->hostkeydata, s->hostkeylen); - s->hkey = ssh->hostkey->newkey(s->hostkeydata, s->hostkeylen); - - { - char *keydata; - ssh_pkt_getstring(pktin, &keydata, &s->rsakeylen); - s->rsakeydata = snewn(s->rsakeylen, char); - memcpy(s->rsakeydata, keydata, s->rsakeylen); - } - - s->rsakey = ssh_rsakex_newkey(s->rsakeydata, s->rsakeylen); - if (!s->rsakey) { - sfree(s->rsakeydata); - bombout(("unable to parse RSA public key from server")); - crStop(0); - } - - hash_string(ssh->kex->hash, ssh->exhash, s->rsakeydata, s->rsakeylen); - - /* - * Next, set up a shared secret K, of precisely KLEN - - * 2*HLEN - 49 bits, where KLEN is the bit length of the - * RSA key modulus and HLEN is the bit length of the hash - * we're using. - */ - { - int klen = ssh_rsakex_klen(s->rsakey); - int nbits = klen - (2*ssh->kex->hash->hlen*8 + 49); - int i, byte = 0; - unsigned char *kstr1, *kstr2, *outstr; - int kstr1len, kstr2len, outstrlen; - - s->K = bn_power_2(nbits - 1); - - for (i = 0; i < nbits; i++) { - if ((i & 7) == 0) { - byte = random_byte(); - } - bignum_set_bit(s->K, i, (byte >> (i & 7)) & 1); - } - - /* - * Encode this as an mpint. - */ - kstr1 = ssh2_mpint_fmt(s->K, &kstr1len); - kstr2 = snewn(kstr2len = 4 + kstr1len, unsigned char); - PUT_32BIT(kstr2, kstr1len); - memcpy(kstr2 + 4, kstr1, kstr1len); - - /* - * Encrypt it with the given RSA key. - */ - outstrlen = (klen + 7) / 8; - outstr = snewn(outstrlen, unsigned char); - ssh_rsakex_encrypt(ssh->kex->hash, kstr2, kstr2len, - outstr, outstrlen, s->rsakey); - - /* - * And send it off in a return packet. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_KEXRSA_SECRET); - ssh2_pkt_addstring_start(s->pktout); - ssh2_pkt_addstring_data(s->pktout, (char *)outstr, outstrlen); - ssh2_pkt_send_noqueue(ssh, s->pktout); - - hash_string(ssh->kex->hash, ssh->exhash, outstr, outstrlen); - - sfree(kstr2); - sfree(kstr1); - sfree(outstr); - } - - ssh_rsakex_freekey(s->rsakey); - - crWaitUntil(pktin); - if (pktin->type != SSH2_MSG_KEXRSA_DONE) { - sfree(s->rsakeydata); - bombout(("expected signature packet from server")); - crStop(0); - } - - ssh_pkt_getstring(pktin, &s->sigdata, &s->siglen); - - sfree(s->rsakeydata); - } - - hash_mpint(ssh->kex->hash, ssh->exhash, s->K); - assert(ssh->kex->hash->hlen <= sizeof(s->exchange_hash)); - ssh->kex->hash->final(ssh->exhash, s->exchange_hash); - - ssh->kex_ctx = NULL; - -#if 0 - debug(("Exchange hash is:\n")); - dmemdump(s->exchange_hash, ssh->kex->hash->hlen); -#endif - - if (!s->hkey || - !ssh->hostkey->verifysig(s->hkey, s->sigdata, s->siglen, - (char *)s->exchange_hash, - ssh->kex->hash->hlen)) { - bombout(("Server's host key did not match the signature supplied")); - crStop(0); - } - - /* - * Authenticate remote host: verify host key. (We've already - * checked the signature of the exchange hash.) - */ - s->keystr = ssh->hostkey->fmtkey(s->hkey); - s->fingerprint = ssh->hostkey->fingerprint(s->hkey); - ssh_set_frozen(ssh, 1); - s->dlgret = verify_ssh_host_key(ssh->frontend, - ssh->savedhost, ssh->savedport, - ssh->hostkey->keytype, s->keystr, - s->fingerprint, - ssh_dialog_callback, ssh); - if (s->dlgret < 0) { - do { - crReturn(0); - if (pktin) { - bombout(("Unexpected data from server while waiting" - " for user host key response")); - crStop(0); - } - } while (pktin || inlen > 0); - s->dlgret = ssh->user_response; - } - ssh_set_frozen(ssh, 0); - if (s->dlgret == 0) { - ssh_disconnect(ssh, "User aborted at host key verification", NULL, - 0, TRUE); - crStop(0); - } - if (!s->got_session_id) { /* don't bother logging this in rekeys */ - logevent("Host key fingerprint is:"); - logevent(s->fingerprint); - } - sfree(s->fingerprint); - sfree(s->keystr); - ssh->hostkey->freekey(s->hkey); - - /* - * The exchange hash from the very first key exchange is also - * the session id, used in session key construction and - * authentication. - */ - if (!s->got_session_id) { - assert(sizeof(s->exchange_hash) <= sizeof(ssh->v2_session_id)); - memcpy(ssh->v2_session_id, s->exchange_hash, - sizeof(s->exchange_hash)); - ssh->v2_session_id_len = ssh->kex->hash->hlen; - assert(ssh->v2_session_id_len <= sizeof(ssh->v2_session_id)); - s->got_session_id = TRUE; - } - - /* - * Send SSH2_MSG_NEWKEYS. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_NEWKEYS); - ssh2_pkt_send_noqueue(ssh, s->pktout); - ssh->outgoing_data_size = 0; /* start counting from here */ - - /* - * We've sent client NEWKEYS, so create and initialise - * client-to-server session keys. - */ - if (ssh->cs_cipher_ctx) - ssh->cscipher->free_context(ssh->cs_cipher_ctx); - ssh->cscipher = s->cscipher_tobe; - ssh->cs_cipher_ctx = ssh->cscipher->make_context(); - - if (ssh->cs_mac_ctx) - ssh->csmac->free_context(ssh->cs_mac_ctx); - ssh->csmac = s->csmac_tobe; - ssh->cs_mac_ctx = ssh->csmac->make_context(); - - if (ssh->cs_comp_ctx) - ssh->cscomp->compress_cleanup(ssh->cs_comp_ctx); - ssh->cscomp = s->cscomp_tobe; - ssh->cs_comp_ctx = ssh->cscomp->compress_init(); - - /* - * Set IVs on client-to-server keys. Here we use the exchange - * hash from the _first_ key exchange. - */ - { - unsigned char keyspace[SSH2_KEX_MAX_HASH_LEN * SSH2_MKKEY_ITERS]; - assert(sizeof(keyspace) >= ssh->kex->hash->hlen * SSH2_MKKEY_ITERS); - ssh2_mkkey(ssh,s->K,s->exchange_hash,'C',keyspace); - assert((ssh->cscipher->keylen+7) / 8 <= - ssh->kex->hash->hlen * SSH2_MKKEY_ITERS); - ssh->cscipher->setkey(ssh->cs_cipher_ctx, keyspace); - ssh2_mkkey(ssh,s->K,s->exchange_hash,'A',keyspace); - assert(ssh->cscipher->blksize <= - ssh->kex->hash->hlen * SSH2_MKKEY_ITERS); - ssh->cscipher->setiv(ssh->cs_cipher_ctx, keyspace); - ssh2_mkkey(ssh,s->K,s->exchange_hash,'E',keyspace); - assert(ssh->csmac->len <= - ssh->kex->hash->hlen * SSH2_MKKEY_ITERS); - ssh->csmac->setkey(ssh->cs_mac_ctx, keyspace); - memset(keyspace, 0, sizeof(keyspace)); - } - - logeventf(ssh, "Initialised %.200s client->server encryption", - ssh->cscipher->text_name); - logeventf(ssh, "Initialised %.200s client->server MAC algorithm", - ssh->csmac->text_name); - if (ssh->cscomp->text_name) - logeventf(ssh, "Initialised %s compression", - ssh->cscomp->text_name); - - /* - * Now our end of the key exchange is complete, we can send all - * our queued higher-layer packets. - */ - ssh->queueing = FALSE; - ssh2_pkt_queuesend(ssh); - - /* - * Expect SSH2_MSG_NEWKEYS from server. - */ - crWaitUntil(pktin); - if (pktin->type != SSH2_MSG_NEWKEYS) { - bombout(("expected new-keys packet from server")); - crStop(0); - } - ssh->incoming_data_size = 0; /* start counting from here */ - - /* - * We've seen server NEWKEYS, so create and initialise - * server-to-client session keys. - */ - if (ssh->sc_cipher_ctx) - ssh->sccipher->free_context(ssh->sc_cipher_ctx); - ssh->sccipher = s->sccipher_tobe; - ssh->sc_cipher_ctx = ssh->sccipher->make_context(); - - if (ssh->sc_mac_ctx) - ssh->scmac->free_context(ssh->sc_mac_ctx); - ssh->scmac = s->scmac_tobe; - ssh->sc_mac_ctx = ssh->scmac->make_context(); - - if (ssh->sc_comp_ctx) - ssh->sccomp->decompress_cleanup(ssh->sc_comp_ctx); - ssh->sccomp = s->sccomp_tobe; - ssh->sc_comp_ctx = ssh->sccomp->decompress_init(); - - /* - * Set IVs on server-to-client keys. Here we use the exchange - * hash from the _first_ key exchange. - */ - { - unsigned char keyspace[SSH2_KEX_MAX_HASH_LEN * SSH2_MKKEY_ITERS]; - assert(sizeof(keyspace) >= ssh->kex->hash->hlen * SSH2_MKKEY_ITERS); - ssh2_mkkey(ssh,s->K,s->exchange_hash,'D',keyspace); - assert((ssh->sccipher->keylen+7) / 8 <= - ssh->kex->hash->hlen * SSH2_MKKEY_ITERS); - ssh->sccipher->setkey(ssh->sc_cipher_ctx, keyspace); - ssh2_mkkey(ssh,s->K,s->exchange_hash,'B',keyspace); - assert(ssh->sccipher->blksize <= - ssh->kex->hash->hlen * SSH2_MKKEY_ITERS); - ssh->sccipher->setiv(ssh->sc_cipher_ctx, keyspace); - ssh2_mkkey(ssh,s->K,s->exchange_hash,'F',keyspace); - assert(ssh->scmac->len <= - ssh->kex->hash->hlen * SSH2_MKKEY_ITERS); - ssh->scmac->setkey(ssh->sc_mac_ctx, keyspace); - memset(keyspace, 0, sizeof(keyspace)); - } - logeventf(ssh, "Initialised %.200s server->client encryption", - ssh->sccipher->text_name); - logeventf(ssh, "Initialised %.200s server->client MAC algorithm", - ssh->scmac->text_name); - if (ssh->sccomp->text_name) - logeventf(ssh, "Initialised %s decompression", - ssh->sccomp->text_name); - - /* - * Free shared secret. - */ - freebn(s->K); - - /* - * Key exchange is over. Loop straight back round if we have a - * deferred rekey reason. - */ - if (ssh->deferred_rekey_reason) { - logevent(ssh->deferred_rekey_reason); - pktin = NULL; - ssh->deferred_rekey_reason = NULL; - goto begin_key_exchange; - } - - /* - * Otherwise, schedule a timer for our next rekey. - */ - ssh->kex_in_progress = FALSE; - ssh->last_rekey = GETTICKCOUNT(); - if (ssh->cfg.ssh_rekey_time != 0) - ssh->next_rekey = schedule_timer(ssh->cfg.ssh_rekey_time*60*TICKSPERSEC, - ssh2_timer, ssh); - - /* - * If this is the first key exchange phase, we must pass the - * SSH2_MSG_NEWKEYS packet to the next layer, not because it - * wants to see it but because it will need time to initialise - * itself before it sees an actual packet. In subsequent key - * exchange phases, we don't pass SSH2_MSG_NEWKEYS on, because - * it would only confuse the layer above. - */ - if (s->activated_authconn) { - crReturn(0); - } - s->activated_authconn = TRUE; - - /* - * Now we're encrypting. Begin returning 1 to the protocol main - * function so that other things can run on top of the - * transport. If we ever see a KEXINIT, we must go back to the - * start. - * - * We _also_ go back to the start if we see pktin==NULL and - * inlen==-1, because this is a special signal meaning - * `initiate client-driven rekey', and `in' contains a message - * giving the reason for the rekey. - */ - while (!((pktin && pktin->type == SSH2_MSG_KEXINIT) || - (!pktin && inlen == -1))) { - wait_for_rekey: - crReturn(1); - } - if (pktin) { - logevent("Server initiated key re-exchange"); - } else { - /* - * Special case: if the server bug is set that doesn't - * allow rekeying, we give a different log message and - * continue waiting. (If such a server _initiates_ a rekey, - * we process it anyway!) - */ - if ((ssh->remote_bugs & BUG_SSH2_REKEY)) { - logeventf(ssh, "Server bug prevents key re-exchange (%s)", - (char *)in); - /* Reset the counters, so that at least this message doesn't - * hit the event log _too_ often. */ - ssh->outgoing_data_size = 0; - ssh->incoming_data_size = 0; - if (ssh->cfg.ssh_rekey_time != 0) { - ssh->next_rekey = - schedule_timer(ssh->cfg.ssh_rekey_time*60*TICKSPERSEC, - ssh2_timer, ssh); - } - goto wait_for_rekey; /* this is utterly horrid */ - } else { - logeventf(ssh, "Initiating key re-exchange (%s)", (char *)in); - } - } - goto begin_key_exchange; - - crFinish(1); -} - -/* - * Add data to an SSH-2 channel output buffer. - */ -static void ssh2_add_channel_data(struct ssh_channel *c, char *buf, - int len) -{ - bufchain_add(&c->v.v2.outbuffer, buf, len); -} - -/* - * Attempt to send data on an SSH-2 channel. - */ -static int ssh2_try_send(struct ssh_channel *c) -{ - Ssh ssh = c->ssh; - struct Packet *pktout; - - while (c->v.v2.remwindow > 0 && bufchain_size(&c->v.v2.outbuffer) > 0) { - int len; - void *data; - bufchain_prefix(&c->v.v2.outbuffer, &data, &len); - if ((unsigned)len > c->v.v2.remwindow) - len = c->v.v2.remwindow; - if ((unsigned)len > c->v.v2.remmaxpkt) - len = c->v.v2.remmaxpkt; - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_DATA); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_addstring_start(pktout); - dont_log_data(ssh, pktout, PKTLOG_OMIT); - ssh2_pkt_addstring_data(pktout, data, len); - end_log_omission(ssh, pktout); - ssh2_pkt_send(ssh, pktout); - bufchain_consume(&c->v.v2.outbuffer, len); - c->v.v2.remwindow -= len; - } - - /* - * After having sent as much data as we can, return the amount - * still buffered. - */ - return bufchain_size(&c->v.v2.outbuffer); -} - -static void ssh2_try_send_and_unthrottle(struct ssh_channel *c) -{ - int bufsize; - if (c->closes) - return; /* don't send on closing channels */ - bufsize = ssh2_try_send(c); - if (bufsize == 0) { - switch (c->type) { - case CHAN_MAINSESSION: - /* stdin need not receive an unthrottle - * notification since it will be polled */ - break; - case CHAN_X11: - x11_unthrottle(c->u.x11.s); - break; - case CHAN_AGENT: - /* agent sockets are request/response and need no - * buffer management */ - break; - case CHAN_SOCKDATA: - pfd_unthrottle(c->u.pfd.s); - break; - } - } -} - -/* - * Set up most of a new ssh_channel for SSH-2. - */ -static void ssh2_channel_init(struct ssh_channel *c) -{ - Ssh ssh = c->ssh; - c->localid = alloc_channel_id(ssh); - c->closes = 0; - c->throttling_conn = FALSE; - c->v.v2.locwindow = c->v.v2.locmaxwin = c->v.v2.remlocwin = - ssh->cfg.ssh_simple ? OUR_V2_BIGWIN : OUR_V2_WINSIZE; - c->v.v2.winadj_head = c->v.v2.winadj_tail = NULL; - c->v.v2.throttle_state = UNTHROTTLED; - bufchain_init(&c->v.v2.outbuffer); -} - -/* - * Potentially enlarge the window on an SSH-2 channel. - */ -static void ssh2_set_window(struct ssh_channel *c, int newwin) -{ - Ssh ssh = c->ssh; - - /* - * Never send WINDOW_ADJUST for a channel that the remote side - * already thinks it's closed; there's no point, since it won't - * be sending any more data anyway. - */ - if (c->closes != 0) - return; - - /* - * If the remote end has a habit of ignoring maxpkt, limit the - * window so that it has no choice (assuming it doesn't ignore the - * window as well). - */ - if ((ssh->remote_bugs & BUG_SSH2_MAXPKT) && newwin > OUR_V2_MAXPKT) - newwin = OUR_V2_MAXPKT; - - - /* - * Only send a WINDOW_ADJUST if there's significantly more window - * available than the other end thinks there is. This saves us - * sending a WINDOW_ADJUST for every character in a shell session. - * - * "Significant" is arbitrarily defined as half the window size. - */ - if (newwin / 2 >= c->v.v2.locwindow) { - struct Packet *pktout; - struct winadj *wa; - - /* - * In order to keep track of how much window the client - * actually has available, we'd like it to acknowledge each - * WINDOW_ADJUST. We can't do that directly, so we accompany - * it with a CHANNEL_REQUEST that has to be acknowledged. - * - * This is only necessary if we're opening the window wide. - * If we're not, then throughput is being constrained by - * something other than the maximum window size anyway. - * - * We also only send this if the main channel has finished its - * initial CHANNEL_REQUESTs and installed the default - * CHANNEL_FAILURE handler, so as not to risk giving it - * unexpected CHANNEL_FAILUREs. - */ - if (newwin == c->v.v2.locmaxwin && - ssh->packet_dispatch[SSH2_MSG_CHANNEL_FAILURE]) { - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_addstring(pktout, "winadj@putty.projects.tartarus.org"); - ssh2_pkt_addbool(pktout, TRUE); - ssh2_pkt_send(ssh, pktout); - - /* - * CHANNEL_FAILURE doesn't come with any indication of - * what message caused it, so we have to keep track of the - * outstanding CHANNEL_REQUESTs ourselves. - */ - wa = snew(struct winadj); - wa->size = newwin - c->v.v2.locwindow; - wa->next = NULL; - if (!c->v.v2.winadj_head) - c->v.v2.winadj_head = wa; - else - c->v.v2.winadj_tail->next = wa; - c->v.v2.winadj_tail = wa; - if (c->v.v2.throttle_state != UNTHROTTLED) - c->v.v2.throttle_state = UNTHROTTLING; - } else { - /* Pretend the WINDOW_ADJUST was acked immediately. */ - c->v.v2.remlocwin = newwin; - c->v.v2.throttle_state = THROTTLED; - } - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_WINDOW_ADJUST); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_adduint32(pktout, newwin - c->v.v2.locwindow); - ssh2_pkt_send(ssh, pktout); - c->v.v2.locwindow = newwin; - } -} - -/* - * Find the channel associated with a message. If there's no channel, - * or it's not properly open, make a noise about it and return NULL. - */ -static struct ssh_channel *ssh2_channel_msg(Ssh ssh, struct Packet *pktin) -{ - unsigned localid = ssh_pkt_getuint32(pktin); - struct ssh_channel *c; - - c = find234(ssh->channels, &localid, ssh_channelfind); - if (!c || - (c->halfopen && pktin->type != SSH2_MSG_CHANNEL_OPEN_CONFIRMATION && - pktin->type != SSH2_MSG_CHANNEL_OPEN_FAILURE)) { - char *buf = dupprintf("Received %s for %s channel %u", - ssh2_pkt_type(ssh->pkt_kctx, ssh->pkt_actx, - pktin->type), - c ? "half-open" : "nonexistent", localid); - ssh_disconnect(ssh, NULL, buf, SSH2_DISCONNECT_PROTOCOL_ERROR, FALSE); - sfree(buf); - return NULL; - } - return c; -} - -static void ssh2_msg_channel_success(Ssh ssh, struct Packet *pktin) -{ - /* - * This should never get called. All channel requests are either - * sent with want_reply false or are sent before this handler gets - * installed. - */ - struct ssh_channel *c; - struct winadj *wa; - - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - wa = c->v.v2.winadj_head; - if (wa) - ssh_disconnect(ssh, NULL, "Received SSH_MSG_CHANNEL_SUCCESS for " - "\"winadj@putty.projects.tartarus.org\"", - SSH2_DISCONNECT_PROTOCOL_ERROR, FALSE); - else - ssh_disconnect(ssh, NULL, - "Received unsolicited SSH_MSG_CHANNEL_SUCCESS", - SSH2_DISCONNECT_PROTOCOL_ERROR, FALSE); -} - -static void ssh2_msg_channel_failure(Ssh ssh, struct Packet *pktin) -{ - /* - * The only time this should get called is for "winadj@putty" - * messages sent above. All other channel requests are either - * sent with want_reply false or are sent before this handler gets - * installed. - */ - struct ssh_channel *c; - struct winadj *wa; - - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - wa = c->v.v2.winadj_head; - if (!wa) { - ssh_disconnect(ssh, NULL, - "Received unsolicited SSH_MSG_CHANNEL_FAILURE", - SSH2_DISCONNECT_PROTOCOL_ERROR, FALSE); - return; - } - c->v.v2.winadj_head = wa->next; - c->v.v2.remlocwin += wa->size; - sfree(wa); - /* - * winadj messages are only sent when the window is fully open, so - * if we get an ack of one, we know any pending unthrottle is - * complete. - */ - if (c->v.v2.throttle_state == UNTHROTTLING) - c->v.v2.throttle_state = UNTHROTTLED; -} - -static void ssh2_msg_channel_window_adjust(Ssh ssh, struct Packet *pktin) -{ - struct ssh_channel *c; - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - if (!c->closes) { - c->v.v2.remwindow += ssh_pkt_getuint32(pktin); - ssh2_try_send_and_unthrottle(c); - } -} - -static void ssh2_msg_channel_data(Ssh ssh, struct Packet *pktin) -{ - char *data; - int length; - struct ssh_channel *c; - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - if (pktin->type == SSH2_MSG_CHANNEL_EXTENDED_DATA && - ssh_pkt_getuint32(pktin) != SSH2_EXTENDED_DATA_STDERR) - return; /* extended but not stderr */ - ssh_pkt_getstring(pktin, &data, &length); - if (data) { - int bufsize = 0; - c->v.v2.locwindow -= length; - c->v.v2.remlocwin -= length; - switch (c->type) { - case CHAN_MAINSESSION: - bufsize = - from_backend(ssh->frontend, pktin->type == - SSH2_MSG_CHANNEL_EXTENDED_DATA, - data, length); - break; - case CHAN_X11: - bufsize = x11_send(c->u.x11.s, data, length); - break; - case CHAN_SOCKDATA: - bufsize = pfd_send(c->u.pfd.s, data, length); - break; - case CHAN_AGENT: - while (length > 0) { - if (c->u.a.lensofar < 4) { - unsigned int l = min(4 - c->u.a.lensofar, - (unsigned)length); - memcpy(c->u.a.msglen + c->u.a.lensofar, - data, l); - data += l; - length -= l; - c->u.a.lensofar += l; - } - if (c->u.a.lensofar == 4) { - c->u.a.totallen = - 4 + GET_32BIT(c->u.a.msglen); - c->u.a.message = snewn(c->u.a.totallen, - unsigned char); - memcpy(c->u.a.message, c->u.a.msglen, 4); - } - if (c->u.a.lensofar >= 4 && length > 0) { - unsigned int l = - min(c->u.a.totallen - c->u.a.lensofar, - (unsigned)length); - memcpy(c->u.a.message + c->u.a.lensofar, - data, l); - data += l; - length -= l; - c->u.a.lensofar += l; - } - if (c->u.a.lensofar == c->u.a.totallen) { - void *reply; - int replylen; - if (agent_query(c->u.a.message, - c->u.a.totallen, - &reply, &replylen, - ssh_agentf_callback, c)) - ssh_agentf_callback(c, reply, replylen); - sfree(c->u.a.message); - c->u.a.lensofar = 0; - } - } - bufsize = 0; - break; - } - /* - * If it looks like the remote end hit the end of its window, - * and we didn't want it to do that, think about using a - * larger window. - */ - if (c->v.v2.remlocwin <= 0 && c->v.v2.throttle_state == UNTHROTTLED && - c->v.v2.locmaxwin < 0x40000000) - c->v.v2.locmaxwin += OUR_V2_WINSIZE; - /* - * If we are not buffering too much data, - * enlarge the window again at the remote side. - * If we are buffering too much, we may still - * need to adjust the window if the server's - * sent excess data. - */ - ssh2_set_window(c, bufsize < c->v.v2.locmaxwin ? - c->v.v2.locmaxwin - bufsize : 0); - /* - * If we're either buffering way too much data, or if we're - * buffering anything at all and we're in "simple" mode, - * throttle the whole channel. - */ - if ((bufsize > c->v.v2.locmaxwin || - (ssh->cfg.ssh_simple && bufsize > 0)) && - !c->throttling_conn) { - c->throttling_conn = 1; - ssh_throttle_conn(ssh, +1); - } - } -} - -static void ssh2_msg_channel_eof(Ssh ssh, struct Packet *pktin) -{ - struct ssh_channel *c; - - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - - if (c->type == CHAN_X11) { - /* - * Remote EOF on an X11 channel means we should - * wrap up and close the channel ourselves. - */ - x11_close(c->u.x11.s); - sshfwd_close(c); - } else if (c->type == CHAN_AGENT) { - sshfwd_close(c); - } else if (c->type == CHAN_SOCKDATA) { - pfd_close(c->u.pfd.s); - sshfwd_close(c); - } -} - -static void ssh2_msg_channel_close(Ssh ssh, struct Packet *pktin) -{ - struct ssh_channel *c; - struct Packet *pktout; - - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - /* Do pre-close processing on the channel. */ - switch (c->type) { - case CHAN_MAINSESSION: - ssh->mainchan = NULL; - update_specials_menu(ssh->frontend); - break; - case CHAN_X11: - if (c->u.x11.s != NULL) - x11_close(c->u.x11.s); - sshfwd_close(c); - break; - case CHAN_AGENT: - sshfwd_close(c); - break; - case CHAN_SOCKDATA: - if (c->u.pfd.s != NULL) - pfd_close(c->u.pfd.s); - sshfwd_close(c); - break; - } - if (c->closes == 0) { - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_CLOSE); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_send(ssh, pktout); - } - del234(ssh->channels, c); - bufchain_clear(&c->v.v2.outbuffer); - sfree(c); - - /* - * See if that was the last channel left open. - * (This is only our termination condition if we're - * not running in -N mode.) - */ - if (!ssh->cfg.ssh_no_shell && count234(ssh->channels) == 0) { - /* - * We used to send SSH_MSG_DISCONNECT here, - * because I'd believed that _every_ conforming - * SSH-2 connection had to end with a disconnect - * being sent by at least one side; apparently - * I was wrong and it's perfectly OK to - * unceremoniously slam the connection shut - * when you're done, and indeed OpenSSH feels - * this is more polite than sending a - * DISCONNECT. So now we don't. - */ - ssh_disconnect(ssh, "All channels closed", NULL, 0, TRUE); - } -} - -static void ssh2_msg_channel_open_confirmation(Ssh ssh, struct Packet *pktin) -{ - struct ssh_channel *c; - struct Packet *pktout; - - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - if (c->type != CHAN_SOCKDATA_DORMANT) - return; /* dunno why they're confirming this */ - c->remoteid = ssh_pkt_getuint32(pktin); - c->halfopen = FALSE; - c->type = CHAN_SOCKDATA; - c->v.v2.remwindow = ssh_pkt_getuint32(pktin); - c->v.v2.remmaxpkt = ssh_pkt_getuint32(pktin); - if (c->u.pfd.s) - pfd_confirm(c->u.pfd.s); - if (c->closes) { - /* - * We have a pending close on this channel, - * which we decided on before the server acked - * the channel open. So now we know the - * remoteid, we can close it again. - */ - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_CLOSE); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_send(ssh, pktout); - } -} - -static void ssh2_msg_channel_open_failure(Ssh ssh, struct Packet *pktin) -{ - static const char *const reasons[] = { - "", - "Administratively prohibited", - "Connect failed", - "Unknown channel type", - "Resource shortage", - }; - unsigned reason_code; - char *reason_string; - int reason_length; - struct ssh_channel *c; - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - if (c->type != CHAN_SOCKDATA_DORMANT) - return; /* dunno why they're failing this */ - - reason_code = ssh_pkt_getuint32(pktin); - if (reason_code >= lenof(reasons)) - reason_code = 0; /* ensure reasons[reason_code] in range */ - ssh_pkt_getstring(pktin, &reason_string, &reason_length); - logeventf(ssh, "Forwarded connection refused by server: %s [%.*s]", - reasons[reason_code], reason_length, reason_string); - - pfd_close(c->u.pfd.s); - - del234(ssh->channels, c); - sfree(c); -} - -static void ssh2_msg_channel_request(Ssh ssh, struct Packet *pktin) -{ - char *type; - int typelen, want_reply; - int reply = SSH2_MSG_CHANNEL_FAILURE; /* default */ - struct ssh_channel *c; - struct Packet *pktout; - - c = ssh2_channel_msg(ssh, pktin); - if (!c) - return; - ssh_pkt_getstring(pktin, &type, &typelen); - want_reply = ssh2_pkt_getbool(pktin); - - /* - * Having got the channel number, we now look at - * the request type string to see if it's something - * we recognise. - */ - if (c == ssh->mainchan) { - /* - * We recognise "exit-status" and "exit-signal" on - * the primary channel. - */ - if (typelen == 11 && - !memcmp(type, "exit-status", 11)) { - - ssh->exitcode = ssh_pkt_getuint32(pktin); - logeventf(ssh, "Server sent command exit status %d", - ssh->exitcode); - reply = SSH2_MSG_CHANNEL_SUCCESS; - - } else if (typelen == 11 && - !memcmp(type, "exit-signal", 11)) { - - int is_plausible = TRUE, is_int = FALSE; - char *fmt_sig = "", *fmt_msg = ""; - char *msg; - int msglen = 0, core = FALSE; - /* ICK: older versions of OpenSSH (e.g. 3.4p1) - * provide an `int' for the signal, despite its - * having been a `string' in the drafts of RFC 4254 since at - * least 2001. (Fixed in session.c 1.147.) Try to - * infer which we can safely parse it as. */ - { - unsigned char *p = pktin->body + - pktin->savedpos; - long len = pktin->length - pktin->savedpos; - unsigned long num = GET_32BIT(p); /* what is it? */ - /* If it's 0, it hardly matters; assume string */ - if (num == 0) { - is_int = FALSE; - } else { - int maybe_int = FALSE, maybe_str = FALSE; -#define CHECK_HYPOTHESIS(offset, result) \ - do { \ - long q = offset; \ - if (q >= 0 && q+4 <= len) { \ - q = q + 4 + GET_32BIT(p+q); \ - if (q >= 0 && q+4 <= len && \ - ((q = q + 4 + GET_32BIT(p+q))!= 0) && q == len) \ - result = TRUE; \ - } \ - } while(0) - CHECK_HYPOTHESIS(4+1, maybe_int); - CHECK_HYPOTHESIS(4+num+1, maybe_str); -#undef CHECK_HYPOTHESIS - if (maybe_int && !maybe_str) - is_int = TRUE; - else if (!maybe_int && maybe_str) - is_int = FALSE; - else - /* Crikey. Either or neither. Panic. */ - is_plausible = FALSE; - } - } - ssh->exitcode = 128; /* means `unknown signal' */ - if (is_plausible) { - if (is_int) { - /* Old non-standard OpenSSH. */ - int signum = ssh_pkt_getuint32(pktin); - fmt_sig = dupprintf(" %d", signum); - ssh->exitcode = 128 + signum; - } else { - /* As per RFC 4254. */ - char *sig; - int siglen; - ssh_pkt_getstring(pktin, &sig, &siglen); - /* Signal name isn't supposed to be blank, but - * let's cope gracefully if it is. */ - if (siglen) { - fmt_sig = dupprintf(" \"%.*s\"", - siglen, sig); - } - - /* - * Really hideous method of translating the - * signal description back into a locally - * meaningful number. - */ - - if (0) - ; -#define TRANSLATE_SIGNAL(s) \ - else if (siglen == lenof(#s)-1 && !memcmp(sig, #s, siglen)) \ - ssh->exitcode = 128 + SIG ## s -#ifdef SIGABRT - TRANSLATE_SIGNAL(ABRT); -#endif -#ifdef SIGALRM - TRANSLATE_SIGNAL(ALRM); -#endif -#ifdef SIGFPE - TRANSLATE_SIGNAL(FPE); -#endif -#ifdef SIGHUP - TRANSLATE_SIGNAL(HUP); -#endif -#ifdef SIGILL - TRANSLATE_SIGNAL(ILL); -#endif -#ifdef SIGINT - TRANSLATE_SIGNAL(INT); -#endif -#ifdef SIGKILL - TRANSLATE_SIGNAL(KILL); -#endif -#ifdef SIGPIPE - TRANSLATE_SIGNAL(PIPE); -#endif -#ifdef SIGQUIT - TRANSLATE_SIGNAL(QUIT); -#endif -#ifdef SIGSEGV - TRANSLATE_SIGNAL(SEGV); -#endif -#ifdef SIGTERM - TRANSLATE_SIGNAL(TERM); -#endif -#ifdef SIGUSR1 - TRANSLATE_SIGNAL(USR1); -#endif -#ifdef SIGUSR2 - TRANSLATE_SIGNAL(USR2); -#endif -#undef TRANSLATE_SIGNAL - else - ssh->exitcode = 128; - } - core = ssh2_pkt_getbool(pktin); - ssh_pkt_getstring(pktin, &msg, &msglen); - if (msglen) { - fmt_msg = dupprintf(" (\"%.*s\")", msglen, msg); - } - /* ignore lang tag */ - } /* else don't attempt to parse */ - logeventf(ssh, "Server exited on signal%s%s%s", - fmt_sig, core ? " (core dumped)" : "", - fmt_msg); - if (*fmt_sig) sfree(fmt_sig); - if (*fmt_msg) sfree(fmt_msg); - reply = SSH2_MSG_CHANNEL_SUCCESS; - - } - } else { - /* - * This is a channel request we don't know - * about, so we now either ignore the request - * or respond with CHANNEL_FAILURE, depending - * on want_reply. - */ - reply = SSH2_MSG_CHANNEL_FAILURE; - } - if (want_reply) { - pktout = ssh2_pkt_init(reply); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_send(ssh, pktout); - } -} - -static void ssh2_msg_global_request(Ssh ssh, struct Packet *pktin) -{ - char *type; - int typelen, want_reply; - struct Packet *pktout; - - ssh_pkt_getstring(pktin, &type, &typelen); - want_reply = ssh2_pkt_getbool(pktin); - - /* - * We currently don't support any global requests - * at all, so we either ignore the request or - * respond with REQUEST_FAILURE, depending on - * want_reply. - */ - if (want_reply) { - pktout = ssh2_pkt_init(SSH2_MSG_REQUEST_FAILURE); - ssh2_pkt_send(ssh, pktout); - } -} - -static void ssh2_msg_channel_open(Ssh ssh, struct Packet *pktin) -{ - char *type; - int typelen; - char *peeraddr; - int peeraddrlen; - int peerport; - char *error = NULL; - struct ssh_channel *c; - unsigned remid, winsize, pktsize; - struct Packet *pktout; - - ssh_pkt_getstring(pktin, &type, &typelen); - c = snew(struct ssh_channel); - c->ssh = ssh; - - remid = ssh_pkt_getuint32(pktin); - winsize = ssh_pkt_getuint32(pktin); - pktsize = ssh_pkt_getuint32(pktin); - - if (typelen == 3 && !memcmp(type, "x11", 3)) { - char *addrstr; - const char *x11err; - - ssh_pkt_getstring(pktin, &peeraddr, &peeraddrlen); - addrstr = snewn(peeraddrlen+1, char); - memcpy(addrstr, peeraddr, peeraddrlen); - addrstr[peeraddrlen] = '\0'; - peerport = ssh_pkt_getuint32(pktin); - - logeventf(ssh, "Received X11 connect request from %s:%d", - addrstr, peerport); - - if (!ssh->X11_fwd_enabled) - error = "X11 forwarding is not enabled"; - else if ((x11err = x11_init(&c->u.x11.s, ssh->x11disp, c, - addrstr, peerport, &ssh->cfg)) != NULL) { - logeventf(ssh, "Local X11 connection failed: %s", x11err); - error = "Unable to open an X11 connection"; - } else { - logevent("Opening X11 forward connection succeeded"); - c->type = CHAN_X11; - } - - sfree(addrstr); - } else if (typelen == 15 && - !memcmp(type, "forwarded-tcpip", 15)) { - struct ssh_rportfwd pf, *realpf; - char *dummy; - int dummylen; - ssh_pkt_getstring(pktin, &dummy, &dummylen);/* skip address */ - pf.sport = ssh_pkt_getuint32(pktin); - ssh_pkt_getstring(pktin, &peeraddr, &peeraddrlen); - peerport = ssh_pkt_getuint32(pktin); - realpf = find234(ssh->rportfwds, &pf, NULL); - logeventf(ssh, "Received remote port %d open request " - "from %s:%d", pf.sport, peeraddr, peerport); - if (realpf == NULL) { - error = "Remote port is not recognised"; - } else { - const char *e = pfd_newconnect(&c->u.pfd.s, - realpf->dhost, - realpf->dport, c, - &ssh->cfg, - realpf->pfrec->addressfamily); - logeventf(ssh, "Attempting to forward remote port to " - "%s:%d", realpf->dhost, realpf->dport); - if (e != NULL) { - logeventf(ssh, "Port open failed: %s", e); - error = "Port open failed"; - } else { - logevent("Forwarded port opened successfully"); - c->type = CHAN_SOCKDATA; - } - } - } else if (typelen == 22 && - !memcmp(type, "auth-agent@openssh.com", 22)) { - if (!ssh->agentfwd_enabled) - error = "Agent forwarding is not enabled"; - else { - c->type = CHAN_AGENT; /* identify channel type */ - c->u.a.lensofar = 0; - } - } else { - error = "Unsupported channel type requested"; - } - - c->remoteid = remid; - c->halfopen = FALSE; - if (error) { - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN_FAILURE); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_adduint32(pktout, SSH2_OPEN_CONNECT_FAILED); - ssh2_pkt_addstring(pktout, error); - ssh2_pkt_addstring(pktout, "en"); /* language tag */ - ssh2_pkt_send(ssh, pktout); - logeventf(ssh, "Rejected channel open: %s", error); - sfree(c); - } else { - ssh2_channel_init(c); - c->v.v2.remwindow = winsize; - c->v.v2.remmaxpkt = pktsize; - add234(ssh->channels, c); - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN_CONFIRMATION); - ssh2_pkt_adduint32(pktout, c->remoteid); - ssh2_pkt_adduint32(pktout, c->localid); - ssh2_pkt_adduint32(pktout, c->v.v2.locwindow); - ssh2_pkt_adduint32(pktout, OUR_V2_MAXPKT); /* our max pkt size */ - ssh2_pkt_send(ssh, pktout); - } -} - -/* - * Buffer banner messages for later display at some convenient point. - */ -static void ssh2_msg_userauth_banner(Ssh ssh, struct Packet *pktin) -{ - /* Arbitrary limit to prevent unbounded inflation of buffer */ - if (bufchain_size(&ssh->banner) <= 131072) { - char *banner = NULL; - int size = 0; - ssh_pkt_getstring(pktin, &banner, &size); - if (banner) - bufchain_add(&ssh->banner, banner, size); - } -} - -/* Helper function to deal with sending tty modes for "pty-req" */ -static void ssh2_send_ttymode(void *data, char *mode, char *val) -{ - struct Packet *pktout = (struct Packet *)data; - int i = 0; - unsigned int arg = 0; - while (strcmp(mode, ssh_ttymodes[i].mode) != 0) i++; - if (i == lenof(ssh_ttymodes)) return; - switch (ssh_ttymodes[i].type) { - case TTY_OP_CHAR: - arg = ssh_tty_parse_specchar(val); - break; - case TTY_OP_BOOL: - arg = ssh_tty_parse_boolean(val); - break; - } - ssh2_pkt_addbyte(pktout, ssh_ttymodes[i].opcode); - ssh2_pkt_adduint32(pktout, arg); -} - -/* - * Handle the SSH-2 userauth and connection layers. - */ -static void do_ssh2_authconn(Ssh ssh, unsigned char *in, int inlen, - struct Packet *pktin) -{ - struct do_ssh2_authconn_state { - enum { - AUTH_TYPE_NONE, - AUTH_TYPE_PUBLICKEY, - AUTH_TYPE_PUBLICKEY_OFFER_LOUD, - AUTH_TYPE_PUBLICKEY_OFFER_QUIET, - AUTH_TYPE_PASSWORD, - AUTH_TYPE_GSSAPI, - AUTH_TYPE_KEYBOARD_INTERACTIVE, - AUTH_TYPE_KEYBOARD_INTERACTIVE_QUIET - } type; - int done_service_req; - int gotit, need_pw, can_pubkey, can_passwd, can_keyb_inter; - int tried_pubkey_config, done_agent; -#ifndef NO_GSSAPI - int can_gssapi; - int tried_gssapi; -#endif - int kbd_inter_refused; - int we_are_in; - prompts_t *cur_prompt; - int num_prompts; - char username[100]; - char *password; - int got_username; - void *publickey_blob; - int publickey_bloblen; - int publickey_encrypted; - char *publickey_algorithm; - char *publickey_comment; - unsigned char agent_request[5], *agent_response, *agentp; - int agent_responselen; - unsigned char *pkblob_in_agent; - int keyi, nkeys; - char *pkblob, *alg, *commentp; - int pklen, alglen, commentlen; - int siglen, retlen, len; - char *q, *agentreq, *ret; - int try_send; - int num_env, env_left, env_ok; - struct Packet *pktout; -#ifndef NO_GSSAPI - Ssh_gss_ctx gss_ctx; - Ssh_gss_buf gss_buf; - Ssh_gss_buf gss_rcvtok, gss_sndtok; - Ssh_gss_name gss_srv_name; - Ssh_gss_stat gss_stat; -#endif - }; - crState(do_ssh2_authconn_state); - - crBegin(ssh->do_ssh2_authconn_crstate); - - s->done_service_req = FALSE; - s->we_are_in = FALSE; -#ifndef NO_GSSAPI - s->tried_gssapi = FALSE; -#endif - - if (!ssh->cfg.ssh_no_userauth) { - /* - * Request userauth protocol, and await a response to it. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_SERVICE_REQUEST); - ssh2_pkt_addstring(s->pktout, "ssh-userauth"); - ssh2_pkt_send(ssh, s->pktout); - crWaitUntilV(pktin); - if (pktin->type == SSH2_MSG_SERVICE_ACCEPT) - s->done_service_req = TRUE; - } - if (!s->done_service_req) { - /* - * Request connection protocol directly, without authentication. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_SERVICE_REQUEST); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - ssh2_pkt_send(ssh, s->pktout); - crWaitUntilV(pktin); - if (pktin->type == SSH2_MSG_SERVICE_ACCEPT) { - s->we_are_in = TRUE; /* no auth required */ - } else { - bombout(("Server refused service request")); - crStopV; - } - } - - /* Arrange to be able to deal with any BANNERs that come in. - * (We do this now as packets may come in during the next bit.) */ - bufchain_init(&ssh->banner); - ssh->packet_dispatch[SSH2_MSG_USERAUTH_BANNER] = - ssh2_msg_userauth_banner; - - /* - * Misc one-time setup for authentication. - */ - s->publickey_blob = NULL; - if (!s->we_are_in) { - - /* - * Load the public half of any configured public key file - * for later use. - */ - if (!filename_is_null(ssh->cfg.keyfile)) { - int keytype; - logeventf(ssh, "Reading private key file \"%.150s\"", - filename_to_str(&ssh->cfg.keyfile)); - keytype = key_type(&ssh->cfg.keyfile); - if (keytype == SSH_KEYTYPE_SSH2) { - const char *error; - s->publickey_blob = - ssh2_userkey_loadpub(&ssh->cfg.keyfile, - &s->publickey_algorithm, - &s->publickey_bloblen, - &s->publickey_comment, &error); - if (s->publickey_blob) { - s->publickey_encrypted = - ssh2_userkey_encrypted(&ssh->cfg.keyfile, NULL); - } else { - char *msgbuf; - logeventf(ssh, "Unable to load private key (%s)", - error); - msgbuf = dupprintf("Unable to load private key file " - "\"%.150s\" (%s)\r\n", - filename_to_str(&ssh->cfg.keyfile), - error); - c_write_str(ssh, msgbuf); - sfree(msgbuf); - } - } else { - char *msgbuf; - logeventf(ssh, "Unable to use this key file (%s)", - key_type_to_str(keytype)); - msgbuf = dupprintf("Unable to use key file \"%.150s\"" - " (%s)\r\n", - filename_to_str(&ssh->cfg.keyfile), - key_type_to_str(keytype)); - c_write_str(ssh, msgbuf); - sfree(msgbuf); - s->publickey_blob = NULL; - } - } - - /* - * Find out about any keys Pageant has (but if there's a - * public key configured, filter out all others). - */ - s->nkeys = 0; - s->agent_response = NULL; - s->pkblob_in_agent = NULL; - if (ssh->cfg.tryagent && agent_exists()) { - - void *r; - - logevent("Pageant is running. Requesting keys."); - - /* Request the keys held by the agent. */ - PUT_32BIT(s->agent_request, 1); - s->agent_request[4] = SSH2_AGENTC_REQUEST_IDENTITIES; - if (!agent_query(s->agent_request, 5, &r, &s->agent_responselen, - ssh_agent_callback, ssh)) { - do { - crReturnV; - if (pktin) { - bombout(("Unexpected data from server while" - " waiting for agent response")); - crStopV; - } - } while (pktin || inlen > 0); - r = ssh->agent_response; - s->agent_responselen = ssh->agent_response_len; - } - s->agent_response = (unsigned char *) r; - if (s->agent_response && s->agent_responselen >= 5 && - s->agent_response[4] == SSH2_AGENT_IDENTITIES_ANSWER) { - int keyi; - unsigned char *p; - p = s->agent_response + 5; - s->nkeys = GET_32BIT(p); - p += 4; - logeventf(ssh, "Pageant has %d SSH-2 keys", s->nkeys); - if (s->publickey_blob) { - /* See if configured key is in agent. */ - for (keyi = 0; keyi < s->nkeys; keyi++) { - s->pklen = GET_32BIT(p); - if (s->pklen == s->publickey_bloblen && - !memcmp(p+4, s->publickey_blob, - s->publickey_bloblen)) { - logeventf(ssh, "Pageant key #%d matches " - "configured key file", keyi); - s->keyi = keyi; - s->pkblob_in_agent = p; - break; - } - p += 4 + s->pklen; - p += GET_32BIT(p) + 4; /* comment */ - } - if (!s->pkblob_in_agent) { - logevent("Configured key file not in Pageant"); - s->nkeys = 0; - } - } - } - } - - } - - /* - * We repeat this whole loop, including the username prompt, - * until we manage a successful authentication. If the user - * types the wrong _password_, they can be sent back to the - * beginning to try another username, if this is configured on. - * (If they specify a username in the config, they are never - * asked, even if they do give a wrong password.) - * - * I think this best serves the needs of - * - * - the people who have no configuration, no keys, and just - * want to try repeated (username,password) pairs until they - * type both correctly - * - * - people who have keys and configuration but occasionally - * need to fall back to passwords - * - * - people with a key held in Pageant, who might not have - * logged in to a particular machine before; so they want to - * type a username, and then _either_ their key will be - * accepted, _or_ they will type a password. If they mistype - * the username they will want to be able to get back and - * retype it! - */ - s->username[0] = '\0'; - s->got_username = FALSE; - while (!s->we_are_in) { - /* - * Get a username. - */ - if (s->got_username && !ssh->cfg.change_username) { - /* - * We got a username last time round this loop, and - * with change_username turned off we don't try to get - * it again. - */ - } else if (!get_remote_username(&ssh->cfg, s->username, - sizeof(s->username))) { - int ret; /* need not be kept over crReturn */ - s->cur_prompt = new_prompts(ssh->frontend); - s->cur_prompt->to_server = TRUE; - s->cur_prompt->name = dupstr("SSH login name"); - add_prompt(s->cur_prompt, dupstr("login as: "), TRUE, - lenof(s->username)); - ret = get_userpass_input(s->cur_prompt, NULL, 0); - while (ret < 0) { - ssh->send_ok = 1; - crWaitUntilV(!pktin); - ret = get_userpass_input(s->cur_prompt, in, inlen); - ssh->send_ok = 0; - } - if (!ret) { - /* - * get_userpass_input() failed to get a username. - * Terminate. - */ - free_prompts(s->cur_prompt); - ssh_disconnect(ssh, "No username provided", NULL, 0, TRUE); - crStopV; - } - memcpy(s->username, s->cur_prompt->prompts[0]->result, - lenof(s->username)); - free_prompts(s->cur_prompt); - } else { - char *stuff; - if ((flags & FLAG_VERBOSE) || (flags & FLAG_INTERACTIVE)) { - stuff = dupprintf("Using username \"%s\".\r\n", s->username); - c_write_str(ssh, stuff); - sfree(stuff); - } - } - s->got_username = TRUE; - - /* - * Send an authentication request using method "none": (a) - * just in case it succeeds, and (b) so that we know what - * authentication methods we can usefully try next. - */ - ssh->pkt_actx = SSH2_PKTCTX_NOAUTH; - - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection");/* service requested */ - ssh2_pkt_addstring(s->pktout, "none"); /* method */ - ssh2_pkt_send(ssh, s->pktout); - s->type = AUTH_TYPE_NONE; - s->gotit = FALSE; - s->we_are_in = FALSE; - - s->tried_pubkey_config = FALSE; - s->kbd_inter_refused = FALSE; - - /* Reset agent request state. */ - s->done_agent = FALSE; - if (s->agent_response) { - if (s->pkblob_in_agent) { - s->agentp = s->pkblob_in_agent; - } else { - s->agentp = s->agent_response + 5 + 4; - s->keyi = 0; - } - } - - while (1) { - /* - * Wait for the result of the last authentication request. - */ - if (!s->gotit) - crWaitUntilV(pktin); - /* - * Now is a convenient point to spew any banner material - * that we've accumulated. (This should ensure that when - * we exit the auth loop, we haven't any left to deal - * with.) - */ - { - int size = bufchain_size(&ssh->banner); - /* - * Don't show the banner if we're operating in - * non-verbose non-interactive mode. (It's probably - * a script, which means nobody will read the - * banner _anyway_, and moreover the printing of - * the banner will screw up processing on the - * output of (say) plink.) - */ - if (size && (flags & (FLAG_VERBOSE | FLAG_INTERACTIVE))) { - char *banner = snewn(size, char); - bufchain_fetch(&ssh->banner, banner, size); - c_write_untrusted(ssh, banner, size); - sfree(banner); - } - bufchain_clear(&ssh->banner); - } - if (pktin->type == SSH2_MSG_USERAUTH_SUCCESS) { - logevent("Access granted"); - s->we_are_in = TRUE; - break; - } - - if (pktin->type != SSH2_MSG_USERAUTH_FAILURE && s->type != AUTH_TYPE_GSSAPI) { - bombout(("Strange packet received during authentication: " - "type %d", pktin->type)); - crStopV; - } - - s->gotit = FALSE; - - /* - * OK, we're now sitting on a USERAUTH_FAILURE message, so - * we can look at the string in it and know what we can - * helpfully try next. - */ - if (pktin->type == SSH2_MSG_USERAUTH_FAILURE) { - char *methods; - int methlen; - ssh_pkt_getstring(pktin, &methods, &methlen); - if (!ssh2_pkt_getbool(pktin)) { - /* - * We have received an unequivocal Access - * Denied. This can translate to a variety of - * messages: - * - * - if we'd just tried "none" authentication, - * it's not worth printing anything at all - * - * - if we'd just tried a public key _offer_, - * the message should be "Server refused our - * key" (or no message at all if the key - * came from Pageant) - * - * - if we'd just tried anything else, the - * message really should be "Access denied". - * - * Additionally, if we'd just tried password - * authentication, we should break out of this - * whole loop so as to go back to the username - * prompt (iff we're configured to allow - * username change attempts). - */ - if (s->type == AUTH_TYPE_NONE) { - /* do nothing */ - } else if (s->type == AUTH_TYPE_PUBLICKEY_OFFER_LOUD || - s->type == AUTH_TYPE_PUBLICKEY_OFFER_QUIET) { - if (s->type == AUTH_TYPE_PUBLICKEY_OFFER_LOUD) - c_write_str(ssh, "Server refused our key\r\n"); - logevent("Server refused public key"); - } else if (s->type==AUTH_TYPE_KEYBOARD_INTERACTIVE_QUIET) { - /* server declined keyboard-interactive; ignore */ - } else { - c_write_str(ssh, "Access denied\r\n"); - logevent("Access denied"); - if (s->type == AUTH_TYPE_PASSWORD && - ssh->cfg.change_username) { - /* XXX perhaps we should allow - * keyboard-interactive to do this too? */ - s->we_are_in = FALSE; - break; - } - } - } else { - c_write_str(ssh, "Further authentication required\r\n"); - logevent("Further authentication required"); - } - - s->can_pubkey = - in_commasep_string("publickey", methods, methlen); - s->can_passwd = - in_commasep_string("password", methods, methlen); - s->can_keyb_inter = ssh->cfg.try_ki_auth && - in_commasep_string("keyboard-interactive", methods, methlen); -#ifndef NO_GSSAPI - s->can_gssapi = ssh->cfg.try_gssapi_auth && - in_commasep_string("gssapi-with-mic", methods, methlen) && - ssh_gss_init(); -#endif - } - - ssh->pkt_actx = SSH2_PKTCTX_NOAUTH; - - if (s->can_pubkey && !s->done_agent && s->nkeys) { - - /* - * Attempt public-key authentication using a key from Pageant. - */ - - ssh->pkt_actx = SSH2_PKTCTX_PUBLICKEY; - - logeventf(ssh, "Trying Pageant key #%d", s->keyi); - - /* Unpack key from agent response */ - s->pklen = GET_32BIT(s->agentp); - s->agentp += 4; - s->pkblob = (char *)s->agentp; - s->agentp += s->pklen; - s->alglen = GET_32BIT(s->pkblob); - s->alg = s->pkblob + 4; - s->commentlen = GET_32BIT(s->agentp); - s->agentp += 4; - s->commentp = (char *)s->agentp; - s->agentp += s->commentlen; - /* s->agentp now points at next key, if any */ - - /* See if server will accept it */ - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - /* service requested */ - ssh2_pkt_addstring(s->pktout, "publickey"); - /* method */ - ssh2_pkt_addbool(s->pktout, FALSE); /* no signature included */ - ssh2_pkt_addstring_start(s->pktout); - ssh2_pkt_addstring_data(s->pktout, s->alg, s->alglen); - ssh2_pkt_addstring_start(s->pktout); - ssh2_pkt_addstring_data(s->pktout, s->pkblob, s->pklen); - ssh2_pkt_send(ssh, s->pktout); - s->type = AUTH_TYPE_PUBLICKEY_OFFER_QUIET; - - crWaitUntilV(pktin); - if (pktin->type != SSH2_MSG_USERAUTH_PK_OK) { - - /* Offer of key refused. */ - s->gotit = TRUE; - - } else { - - void *vret; - - if (flags & FLAG_VERBOSE) { - c_write_str(ssh, "Authenticating with " - "public key \""); - c_write(ssh, s->commentp, s->commentlen); - c_write_str(ssh, "\" from agent\r\n"); - } - - /* - * Server is willing to accept the key. - * Construct a SIGN_REQUEST. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - /* service requested */ - ssh2_pkt_addstring(s->pktout, "publickey"); - /* method */ - ssh2_pkt_addbool(s->pktout, TRUE); /* signature included */ - ssh2_pkt_addstring_start(s->pktout); - ssh2_pkt_addstring_data(s->pktout, s->alg, s->alglen); - ssh2_pkt_addstring_start(s->pktout); - ssh2_pkt_addstring_data(s->pktout, s->pkblob, s->pklen); - - /* Ask agent for signature. */ - s->siglen = s->pktout->length - 5 + 4 + - ssh->v2_session_id_len; - if (ssh->remote_bugs & BUG_SSH2_PK_SESSIONID) - s->siglen -= 4; - s->len = 1; /* message type */ - s->len += 4 + s->pklen; /* key blob */ - s->len += 4 + s->siglen; /* data to sign */ - s->len += 4; /* flags */ - s->agentreq = snewn(4 + s->len, char); - PUT_32BIT(s->agentreq, s->len); - s->q = s->agentreq + 4; - *s->q++ = SSH2_AGENTC_SIGN_REQUEST; - PUT_32BIT(s->q, s->pklen); - s->q += 4; - memcpy(s->q, s->pkblob, s->pklen); - s->q += s->pklen; - PUT_32BIT(s->q, s->siglen); - s->q += 4; - /* Now the data to be signed... */ - if (!(ssh->remote_bugs & BUG_SSH2_PK_SESSIONID)) { - PUT_32BIT(s->q, ssh->v2_session_id_len); - s->q += 4; - } - memcpy(s->q, ssh->v2_session_id, - ssh->v2_session_id_len); - s->q += ssh->v2_session_id_len; - memcpy(s->q, s->pktout->data + 5, - s->pktout->length - 5); - s->q += s->pktout->length - 5; - /* And finally the (zero) flags word. */ - PUT_32BIT(s->q, 0); - if (!agent_query(s->agentreq, s->len + 4, - &vret, &s->retlen, - ssh_agent_callback, ssh)) { - do { - crReturnV; - if (pktin) { - bombout(("Unexpected data from server" - " while waiting for agent" - " response")); - crStopV; - } - } while (pktin || inlen > 0); - vret = ssh->agent_response; - s->retlen = ssh->agent_response_len; - } - s->ret = vret; - sfree(s->agentreq); - if (s->ret) { - if (s->ret[4] == SSH2_AGENT_SIGN_RESPONSE) { - logevent("Sending Pageant's response"); - ssh2_add_sigblob(ssh, s->pktout, - s->pkblob, s->pklen, - s->ret + 9, - GET_32BIT(s->ret + 5)); - ssh2_pkt_send(ssh, s->pktout); - s->type = AUTH_TYPE_PUBLICKEY; - } else { - /* FIXME: less drastic response */ - bombout(("Pageant failed to answer challenge")); - crStopV; - } - } - } - - /* Do we have any keys left to try? */ - if (s->pkblob_in_agent) { - s->done_agent = TRUE; - s->tried_pubkey_config = TRUE; - } else { - s->keyi++; - if (s->keyi >= s->nkeys) - s->done_agent = TRUE; - } - - } else if (s->can_pubkey && s->publickey_blob && - !s->tried_pubkey_config) { - - struct ssh2_userkey *key; /* not live over crReturn */ - char *passphrase; /* not live over crReturn */ - - ssh->pkt_actx = SSH2_PKTCTX_PUBLICKEY; - - s->tried_pubkey_config = TRUE; - - /* - * Try the public key supplied in the configuration. - * - * First, offer the public blob to see if the server is - * willing to accept it. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - /* service requested */ - ssh2_pkt_addstring(s->pktout, "publickey"); /* method */ - ssh2_pkt_addbool(s->pktout, FALSE); - /* no signature included */ - ssh2_pkt_addstring(s->pktout, s->publickey_algorithm); - ssh2_pkt_addstring_start(s->pktout); - ssh2_pkt_addstring_data(s->pktout, - (char *)s->publickey_blob, - s->publickey_bloblen); - ssh2_pkt_send(ssh, s->pktout); - logevent("Offered public key"); - - crWaitUntilV(pktin); - if (pktin->type != SSH2_MSG_USERAUTH_PK_OK) { - /* Key refused. Give up. */ - s->gotit = TRUE; /* reconsider message next loop */ - s->type = AUTH_TYPE_PUBLICKEY_OFFER_LOUD; - continue; /* process this new message */ - } - logevent("Offer of public key accepted"); - - /* - * Actually attempt a serious authentication using - * the key. - */ - if (flags & FLAG_VERBOSE) { - c_write_str(ssh, "Authenticating with public key \""); - c_write_str(ssh, s->publickey_comment); - c_write_str(ssh, "\"\r\n"); - } - key = NULL; - while (!key) { - const char *error; /* not live over crReturn */ - if (s->publickey_encrypted) { - /* - * Get a passphrase from the user. - */ - int ret; /* need not be kept over crReturn */ - s->cur_prompt = new_prompts(ssh->frontend); - s->cur_prompt->to_server = FALSE; - s->cur_prompt->name = dupstr("SSH key passphrase"); - add_prompt(s->cur_prompt, - dupprintf("Passphrase for key \"%.100s\": ", - s->publickey_comment), - FALSE, SSH_MAX_PASSWORD_LEN); - ret = get_userpass_input(s->cur_prompt, NULL, 0); - while (ret < 0) { - ssh->send_ok = 1; - crWaitUntilV(!pktin); - ret = get_userpass_input(s->cur_prompt, - in, inlen); - ssh->send_ok = 0; - } - if (!ret) { - /* Failed to get a passphrase. Terminate. */ - free_prompts(s->cur_prompt); - ssh_disconnect(ssh, NULL, - "Unable to authenticate", - SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER, - TRUE); - crStopV; - } - passphrase = - dupstr(s->cur_prompt->prompts[0]->result); - free_prompts(s->cur_prompt); - } else { - passphrase = NULL; /* no passphrase needed */ - } - - /* - * Try decrypting the key. - */ - key = ssh2_load_userkey(&ssh->cfg.keyfile, passphrase, - &error); - if (passphrase) { - /* burn the evidence */ - memset(passphrase, 0, strlen(passphrase)); - sfree(passphrase); - } - if (key == SSH2_WRONG_PASSPHRASE || key == NULL) { - if (passphrase && - (key == SSH2_WRONG_PASSPHRASE)) { - c_write_str(ssh, "Wrong passphrase\r\n"); - key = NULL; - /* and loop again */ - } else { - c_write_str(ssh, "Unable to load private key ("); - c_write_str(ssh, error); - c_write_str(ssh, ")\r\n"); - key = NULL; - break; /* try something else */ - } - } - } - - if (key) { - unsigned char *pkblob, *sigblob, *sigdata; - int pkblob_len, sigblob_len, sigdata_len; - int p; - - /* - * We have loaded the private key and the server - * has announced that it's willing to accept it. - * Hallelujah. Generate a signature and send it. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - /* service requested */ - ssh2_pkt_addstring(s->pktout, "publickey"); - /* method */ - ssh2_pkt_addbool(s->pktout, TRUE); - /* signature follows */ - ssh2_pkt_addstring(s->pktout, key->alg->name); - pkblob = key->alg->public_blob(key->data, - &pkblob_len); - ssh2_pkt_addstring_start(s->pktout); - ssh2_pkt_addstring_data(s->pktout, (char *)pkblob, - pkblob_len); - - /* - * The data to be signed is: - * - * string session-id - * - * followed by everything so far placed in the - * outgoing packet. - */ - sigdata_len = s->pktout->length - 5 + 4 + - ssh->v2_session_id_len; - if (ssh->remote_bugs & BUG_SSH2_PK_SESSIONID) - sigdata_len -= 4; - sigdata = snewn(sigdata_len, unsigned char); - p = 0; - if (!(ssh->remote_bugs & BUG_SSH2_PK_SESSIONID)) { - PUT_32BIT(sigdata+p, ssh->v2_session_id_len); - p += 4; - } - memcpy(sigdata+p, ssh->v2_session_id, - ssh->v2_session_id_len); - p += ssh->v2_session_id_len; - memcpy(sigdata+p, s->pktout->data + 5, - s->pktout->length - 5); - p += s->pktout->length - 5; - assert(p == sigdata_len); - sigblob = key->alg->sign(key->data, (char *)sigdata, - sigdata_len, &sigblob_len); - ssh2_add_sigblob(ssh, s->pktout, pkblob, pkblob_len, - sigblob, sigblob_len); - sfree(pkblob); - sfree(sigblob); - sfree(sigdata); - - ssh2_pkt_send(ssh, s->pktout); - s->type = AUTH_TYPE_PUBLICKEY; - key->alg->freekey(key->data); - } - -#ifndef NO_GSSAPI - } else if (s->can_gssapi && !s->tried_gssapi) { - - /* GSSAPI Authentication */ - - int micoffset, len; - char *data; - Ssh_gss_buf mic; - s->type = AUTH_TYPE_GSSAPI; - s->tried_gssapi = TRUE; - s->gotit = TRUE; - ssh->pkt_actx = SSH2_PKTCTX_GSSAPI; - - /* Sending USERAUTH_REQUEST with "gssapi-with-mic" method */ - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - ssh2_pkt_addstring(s->pktout, "gssapi-with-mic"); - - /* add mechanism info */ - ssh_gss_indicate_mech(&s->gss_buf); - - /* number of GSSAPI mechanisms */ - ssh2_pkt_adduint32(s->pktout,1); - - /* length of OID + 2 */ - ssh2_pkt_adduint32(s->pktout, s->gss_buf.length + 2); - ssh2_pkt_addbyte(s->pktout, SSH2_GSS_OIDTYPE); - - /* length of OID */ - ssh2_pkt_addbyte(s->pktout, (unsigned char) s->gss_buf.length); - - ssh_pkt_adddata(s->pktout, s->gss_buf.value, - s->gss_buf.length); - ssh2_pkt_send(ssh, s->pktout); - crWaitUntilV(pktin); - if (pktin->type != SSH2_MSG_USERAUTH_GSSAPI_RESPONSE) { - logevent("GSSAPI authentication request refused"); - continue; - } - - /* check returned packet ... */ - - ssh_pkt_getstring(pktin, &data, &len); - s->gss_rcvtok.value = data; - s->gss_rcvtok.length = len; - if (s->gss_rcvtok.length != s->gss_buf.length + 2 || - ((char *)s->gss_rcvtok.value)[0] != SSH2_GSS_OIDTYPE || - ((char *)s->gss_rcvtok.value)[1] != s->gss_buf.length || - memcmp((char *)s->gss_rcvtok.value + 2, - s->gss_buf.value,s->gss_buf.length) ) { - logevent("GSSAPI authentication - wrong response from server"); - continue; - } - - /* now start running */ - s->gss_stat = ssh_gss_import_name(ssh->fullhostname, - &s->gss_srv_name); - if (s->gss_stat != SSH_GSS_OK) { - if (s->gss_stat == SSH_GSS_BAD_HOST_NAME) - logevent("GSSAPI import name failed - Bad service name"); - else - logevent("GSSAPI import name failed"); - continue; - } - - /* fetch TGT into GSS engine */ - s->gss_stat = ssh_gss_acquire_cred(&s->gss_ctx); - - if (s->gss_stat != SSH_GSS_OK) { - logevent("GSSAPI authentication failed to get credentials"); - ssh_gss_release_name(&s->gss_srv_name); - continue; - } - - /* initial tokens are empty */ - SSH_GSS_CLEAR_BUF(&s->gss_rcvtok); - SSH_GSS_CLEAR_BUF(&s->gss_sndtok); - - /* now enter the loop */ - do { - s->gss_stat = ssh_gss_init_sec_context(&s->gss_ctx, - s->gss_srv_name, - ssh->cfg.gssapifwd, - &s->gss_rcvtok, - &s->gss_sndtok); - - if (s->gss_stat!=SSH_GSS_S_COMPLETE && - s->gss_stat!=SSH_GSS_S_CONTINUE_NEEDED) { - logevent("GSSAPI authentication initialisation failed"); - - if (ssh_gss_display_status(s->gss_ctx,&s->gss_buf) == SSH_GSS_OK) { - logevent(s->gss_buf.value); - sfree(s->gss_buf.value); - } - - break; - } - logevent("GSSAPI authentication initialised"); - - /* Client and server now exchange tokens until GSSAPI - * no longer says CONTINUE_NEEDED */ - - if (s->gss_sndtok.length != 0) { - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_GSSAPI_TOKEN); - ssh_pkt_addstring_start(s->pktout); - ssh_pkt_addstring_data(s->pktout,s->gss_sndtok.value,s->gss_sndtok.length); - ssh2_pkt_send(ssh, s->pktout); - ssh_gss_free_tok(&s->gss_sndtok); - } - - if (s->gss_stat == SSH_GSS_S_CONTINUE_NEEDED) { - crWaitUntilV(pktin); - if (pktin->type != SSH2_MSG_USERAUTH_GSSAPI_TOKEN) { - logevent("GSSAPI authentication - bad server response"); - s->gss_stat = SSH_GSS_FAILURE; - break; - } - ssh_pkt_getstring(pktin, &data, &len); - s->gss_rcvtok.value = data; - s->gss_rcvtok.length = len; - } - } while (s-> gss_stat == SSH_GSS_S_CONTINUE_NEEDED); - - if (s->gss_stat != SSH_GSS_OK) { - ssh_gss_release_name(&s->gss_srv_name); - ssh_gss_release_cred(&s->gss_ctx); - continue; - } - logevent("GSSAPI authentication loop finished OK"); - - /* Now send the MIC */ - - s->pktout = ssh2_pkt_init(0); - micoffset = s->pktout->length; - ssh_pkt_addstring_start(s->pktout); - ssh_pkt_addstring_data(s->pktout, (char *)ssh->v2_session_id, ssh->v2_session_id_len); - ssh_pkt_addbyte(s->pktout, SSH2_MSG_USERAUTH_REQUEST); - ssh_pkt_addstring(s->pktout, s->username); - ssh_pkt_addstring(s->pktout, "ssh-connection"); - ssh_pkt_addstring(s->pktout, "gssapi-with-mic"); - - s->gss_buf.value = (char *)s->pktout->data + micoffset; - s->gss_buf.length = s->pktout->length - micoffset; - - ssh_gss_get_mic(s->gss_ctx, &s->gss_buf, &mic); - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_GSSAPI_MIC); - ssh_pkt_addstring_start(s->pktout); - ssh_pkt_addstring_data(s->pktout, mic.value, mic.length); - ssh2_pkt_send(ssh, s->pktout); - ssh_gss_free_mic(&mic); - - s->gotit = FALSE; - - ssh_gss_release_name(&s->gss_srv_name); - ssh_gss_release_cred(&s->gss_ctx); - continue; -#endif - } else if (s->can_keyb_inter && !s->kbd_inter_refused) { - - /* - * Keyboard-interactive authentication. - */ - - s->type = AUTH_TYPE_KEYBOARD_INTERACTIVE; - - ssh->pkt_actx = SSH2_PKTCTX_KBDINTER; - - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - /* service requested */ - ssh2_pkt_addstring(s->pktout, "keyboard-interactive"); - /* method */ - ssh2_pkt_addstring(s->pktout, ""); /* lang */ - ssh2_pkt_addstring(s->pktout, ""); /* submethods */ - ssh2_pkt_send(ssh, s->pktout); - - crWaitUntilV(pktin); - if (pktin->type != SSH2_MSG_USERAUTH_INFO_REQUEST) { - /* Server is not willing to do keyboard-interactive - * at all (or, bizarrely but legally, accepts the - * user without actually issuing any prompts). - * Give up on it entirely. */ - s->gotit = TRUE; - if (pktin->type == SSH2_MSG_USERAUTH_FAILURE) - logevent("Keyboard-interactive authentication refused"); - s->type = AUTH_TYPE_KEYBOARD_INTERACTIVE_QUIET; - s->kbd_inter_refused = TRUE; /* don't try it again */ - continue; - } - - /* - * Loop while the server continues to send INFO_REQUESTs. - */ - while (pktin->type == SSH2_MSG_USERAUTH_INFO_REQUEST) { - - char *name, *inst, *lang; - int name_len, inst_len, lang_len; - int i; - - /* - * We've got a fresh USERAUTH_INFO_REQUEST. - * Get the preamble and start building a prompt. - */ - ssh_pkt_getstring(pktin, &name, &name_len); - ssh_pkt_getstring(pktin, &inst, &inst_len); - ssh_pkt_getstring(pktin, &lang, &lang_len); - s->cur_prompt = new_prompts(ssh->frontend); - s->cur_prompt->to_server = TRUE; - - /* - * Get any prompt(s) from the packet. - */ - s->num_prompts = ssh_pkt_getuint32(pktin); - for (i = 0; i < s->num_prompts; i++) { - char *prompt; - int prompt_len; - int echo; - static char noprompt[] = - ": "; - - ssh_pkt_getstring(pktin, &prompt, &prompt_len); - echo = ssh2_pkt_getbool(pktin); - if (!prompt_len) { - prompt = noprompt; - prompt_len = lenof(noprompt)-1; - } - add_prompt(s->cur_prompt, - dupprintf("%.*s", prompt_len, prompt), - echo, SSH_MAX_PASSWORD_LEN); - } - - if (name_len) { - /* FIXME: better prefix to distinguish from - * local prompts? */ - s->cur_prompt->name = - dupprintf("SSH server: %.*s", name_len, name); - s->cur_prompt->name_reqd = TRUE; - } else { - s->cur_prompt->name = - dupstr("SSH server authentication"); - s->cur_prompt->name_reqd = FALSE; - } - /* We add a prefix to try to make it clear that a prompt - * has come from the server. - * FIXME: ugly to print "Using..." in prompt _every_ - * time round. Can this be done more subtly? */ - /* Special case: for reasons best known to themselves, - * some servers send k-i requests with no prompts and - * nothing to display. Keep quiet in this case. */ - if (s->num_prompts || name_len || inst_len) { - s->cur_prompt->instruction = - dupprintf("Using keyboard-interactive authentication.%s%.*s", - inst_len ? "\n" : "", inst_len, inst); - s->cur_prompt->instr_reqd = TRUE; - } else { - s->cur_prompt->instr_reqd = FALSE; - } - - /* - * Display any instructions, and get the user's - * response(s). - */ - { - int ret; /* not live over crReturn */ - ret = get_userpass_input(s->cur_prompt, NULL, 0); - while (ret < 0) { - ssh->send_ok = 1; - crWaitUntilV(!pktin); - ret = get_userpass_input(s->cur_prompt, in, inlen); - ssh->send_ok = 0; - } - if (!ret) { - /* - * Failed to get responses. Terminate. - */ - free_prompts(s->cur_prompt); - ssh_disconnect(ssh, NULL, "Unable to authenticate", - SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER, - TRUE); - crStopV; - } - } - - /* - * Send the response(s) to the server. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_INFO_RESPONSE); - ssh2_pkt_adduint32(s->pktout, s->num_prompts); - for (i=0; i < s->num_prompts; i++) { - dont_log_password(ssh, s->pktout, PKTLOG_BLANK); - ssh2_pkt_addstring(s->pktout, - s->cur_prompt->prompts[i]->result); - end_log_omission(ssh, s->pktout); - } - ssh2_pkt_send_with_padding(ssh, s->pktout, 256); - - /* - * Get the next packet in case it's another - * INFO_REQUEST. - */ - crWaitUntilV(pktin); - - } - - /* - * We should have SUCCESS or FAILURE now. - */ - s->gotit = TRUE; - - } else if (s->can_passwd) { - - /* - * Plain old password authentication. - */ - int ret; /* not live over crReturn */ - int changereq_first_time; /* not live over crReturn */ - - ssh->pkt_actx = SSH2_PKTCTX_PASSWORD; - - s->cur_prompt = new_prompts(ssh->frontend); - s->cur_prompt->to_server = TRUE; - s->cur_prompt->name = dupstr("SSH password"); - add_prompt(s->cur_prompt, dupprintf("%.90s@%.90s's password: ", - s->username, - ssh->savedhost), - FALSE, SSH_MAX_PASSWORD_LEN); - - ret = get_userpass_input(s->cur_prompt, NULL, 0); - while (ret < 0) { - ssh->send_ok = 1; - crWaitUntilV(!pktin); - ret = get_userpass_input(s->cur_prompt, in, inlen); - ssh->send_ok = 0; - } - if (!ret) { - /* - * Failed to get responses. Terminate. - */ - free_prompts(s->cur_prompt); - ssh_disconnect(ssh, NULL, "Unable to authenticate", - SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER, - TRUE); - crStopV; - } - /* - * Squirrel away the password. (We may need it later if - * asked to change it.) - */ - s->password = dupstr(s->cur_prompt->prompts[0]->result); - free_prompts(s->cur_prompt); - - /* - * Send the password packet. - * - * We pad out the password packet to 256 bytes to make - * it harder for an attacker to find the length of the - * user's password. - * - * Anyone using a password longer than 256 bytes - * probably doesn't have much to worry about from - * people who find out how long their password is! - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - /* service requested */ - ssh2_pkt_addstring(s->pktout, "password"); - ssh2_pkt_addbool(s->pktout, FALSE); - dont_log_password(ssh, s->pktout, PKTLOG_BLANK); - ssh2_pkt_addstring(s->pktout, s->password); - end_log_omission(ssh, s->pktout); - ssh2_pkt_send_with_padding(ssh, s->pktout, 256); - logevent("Sent password"); - s->type = AUTH_TYPE_PASSWORD; - - /* - * Wait for next packet, in case it's a password change - * request. - */ - crWaitUntilV(pktin); - changereq_first_time = TRUE; - - while (pktin->type == SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ) { - - /* - * We're being asked for a new password - * (perhaps not for the first time). - * Loop until the server accepts it. - */ - - int got_new = FALSE; /* not live over crReturn */ - char *prompt; /* not live over crReturn */ - int prompt_len; /* not live over crReturn */ - - { - char *msg; - if (changereq_first_time) - msg = "Server requested password change"; - else - msg = "Server rejected new password"; - logevent(msg); - c_write_str(ssh, msg); - c_write_str(ssh, "\r\n"); - } - - ssh_pkt_getstring(pktin, &prompt, &prompt_len); - - s->cur_prompt = new_prompts(ssh->frontend); - s->cur_prompt->to_server = TRUE; - s->cur_prompt->name = dupstr("New SSH password"); - s->cur_prompt->instruction = - dupprintf("%.*s", prompt_len, prompt); - s->cur_prompt->instr_reqd = TRUE; - /* - * There's no explicit requirement in the protocol - * for the "old" passwords in the original and - * password-change messages to be the same, and - * apparently some Cisco kit supports password change - * by the user entering a blank password originally - * and the real password subsequently, so, - * reluctantly, we prompt for the old password again. - * - * (On the other hand, some servers don't even bother - * to check this field.) - */ - add_prompt(s->cur_prompt, - dupstr("Current password (blank for previously entered password): "), - FALSE, SSH_MAX_PASSWORD_LEN); - add_prompt(s->cur_prompt, dupstr("Enter new password: "), - FALSE, SSH_MAX_PASSWORD_LEN); - add_prompt(s->cur_prompt, dupstr("Confirm new password: "), - FALSE, SSH_MAX_PASSWORD_LEN); - - /* - * Loop until the user manages to enter the same - * password twice. - */ - while (!got_new) { - - ret = get_userpass_input(s->cur_prompt, NULL, 0); - while (ret < 0) { - ssh->send_ok = 1; - crWaitUntilV(!pktin); - ret = get_userpass_input(s->cur_prompt, in, inlen); - ssh->send_ok = 0; - } - if (!ret) { - /* - * Failed to get responses. Terminate. - */ - /* burn the evidence */ - free_prompts(s->cur_prompt); - memset(s->password, 0, strlen(s->password)); - sfree(s->password); - ssh_disconnect(ssh, NULL, "Unable to authenticate", - SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER, - TRUE); - crStopV; - } - - /* - * If the user specified a new original password - * (IYSWIM), overwrite any previously specified - * one. - * (A side effect is that the user doesn't have to - * re-enter it if they louse up the new password.) - */ - if (s->cur_prompt->prompts[0]->result[0]) { - memset(s->password, 0, strlen(s->password)); - /* burn the evidence */ - sfree(s->password); - s->password = - dupstr(s->cur_prompt->prompts[0]->result); - } - - /* - * Check the two new passwords match. - */ - got_new = (strcmp(s->cur_prompt->prompts[1]->result, - s->cur_prompt->prompts[2]->result) - == 0); - if (!got_new) - /* They don't. Silly user. */ - c_write_str(ssh, "Passwords do not match\r\n"); - - } - - /* - * Send the new password (along with the old one). - * (see above for padding rationale) - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST); - ssh2_pkt_addstring(s->pktout, s->username); - ssh2_pkt_addstring(s->pktout, "ssh-connection"); - /* service requested */ - ssh2_pkt_addstring(s->pktout, "password"); - ssh2_pkt_addbool(s->pktout, TRUE); - dont_log_password(ssh, s->pktout, PKTLOG_BLANK); - ssh2_pkt_addstring(s->pktout, s->password); - ssh2_pkt_addstring(s->pktout, - s->cur_prompt->prompts[1]->result); - free_prompts(s->cur_prompt); - end_log_omission(ssh, s->pktout); - ssh2_pkt_send_with_padding(ssh, s->pktout, 256); - logevent("Sent new password"); - - /* - * Now see what the server has to say about it. - * (If it's CHANGEREQ again, it's not happy with the - * new password.) - */ - crWaitUntilV(pktin); - changereq_first_time = FALSE; - - } - - /* - * We need to reexamine the current pktin at the top - * of the loop. Either: - * - we weren't asked to change password at all, in - * which case it's a SUCCESS or FAILURE with the - * usual meaning - * - we sent a new password, and the server was - * either OK with it (SUCCESS or FAILURE w/partial - * success) or unhappy with the _old_ password - * (FAILURE w/o partial success) - * In any of these cases, we go back to the top of - * the loop and start again. - */ - s->gotit = TRUE; - - /* - * We don't need the old password any more, in any - * case. Burn the evidence. - */ - memset(s->password, 0, strlen(s->password)); - sfree(s->password); - - } else { - - ssh_disconnect(ssh, NULL, - "No supported authentication methods available", - SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE, - FALSE); - crStopV; - - } - - } - } - ssh->packet_dispatch[SSH2_MSG_USERAUTH_BANNER] = NULL; - - /* Clear up various bits and pieces from authentication. */ - if (s->publickey_blob) { - sfree(s->publickey_blob); - sfree(s->publickey_comment); - } - if (s->agent_response) - sfree(s->agent_response); - - /* - * Now the connection protocol has started, one way or another. - */ - - ssh->channels = newtree234(ssh_channelcmp); - - /* - * Set up handlers for some connection protocol messages, so we - * don't have to handle them repeatedly in this coroutine. - */ - ssh->packet_dispatch[SSH2_MSG_CHANNEL_WINDOW_ADJUST] = - ssh2_msg_channel_window_adjust; - ssh->packet_dispatch[SSH2_MSG_GLOBAL_REQUEST] = - ssh2_msg_global_request; - - /* - * Create the main session channel. - */ - if (ssh->cfg.ssh_no_shell) { - ssh->mainchan = NULL; - } else if (*ssh->cfg.ssh_nc_host) { - /* - * Just start a direct-tcpip channel and use it as the main - * channel. - */ - ssh->mainchan = snew(struct ssh_channel); - ssh->mainchan->ssh = ssh; - ssh2_channel_init(ssh->mainchan); - logeventf(ssh, - "Opening direct-tcpip channel to %s:%d in place of session", - ssh->cfg.ssh_nc_host, ssh->cfg.ssh_nc_port); - s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN); - ssh2_pkt_addstring(s->pktout, "direct-tcpip"); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->localid); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->v.v2.locwindow);/* our window size */ - ssh2_pkt_adduint32(s->pktout, OUR_V2_MAXPKT); /* our max pkt size */ - ssh2_pkt_addstring(s->pktout, ssh->cfg.ssh_nc_host); - ssh2_pkt_adduint32(s->pktout, ssh->cfg.ssh_nc_port); - /* - * There's nothing meaningful to put in the originator - * fields, but some servers insist on syntactically correct - * information. - */ - ssh2_pkt_addstring(s->pktout, "0.0.0.0"); - ssh2_pkt_adduint32(s->pktout, 0); - ssh2_pkt_send(ssh, s->pktout); - - crWaitUntilV(pktin); - if (pktin->type != SSH2_MSG_CHANNEL_OPEN_CONFIRMATION) { - bombout(("Server refused to open a direct-tcpip channel")); - crStopV; - /* FIXME: error data comes back in FAILURE packet */ - } - if (ssh_pkt_getuint32(pktin) != ssh->mainchan->localid) { - bombout(("Server's channel confirmation cited wrong channel")); - crStopV; - } - ssh->mainchan->remoteid = ssh_pkt_getuint32(pktin); - ssh->mainchan->halfopen = FALSE; - ssh->mainchan->type = CHAN_MAINSESSION; - ssh->mainchan->v.v2.remwindow = ssh_pkt_getuint32(pktin); - ssh->mainchan->v.v2.remmaxpkt = ssh_pkt_getuint32(pktin); - add234(ssh->channels, ssh->mainchan); - update_specials_menu(ssh->frontend); - logevent("Opened direct-tcpip channel"); - ssh->ncmode = TRUE; - } else { - ssh->mainchan = snew(struct ssh_channel); - ssh->mainchan->ssh = ssh; - ssh2_channel_init(ssh->mainchan); - s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN); - ssh2_pkt_addstring(s->pktout, "session"); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->localid); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->v.v2.locwindow);/* our window size */ - ssh2_pkt_adduint32(s->pktout, OUR_V2_MAXPKT); /* our max pkt size */ - ssh2_pkt_send(ssh, s->pktout); - crWaitUntilV(pktin); - if (pktin->type != SSH2_MSG_CHANNEL_OPEN_CONFIRMATION) { - bombout(("Server refused to open a session")); - crStopV; - /* FIXME: error data comes back in FAILURE packet */ - } - if (ssh_pkt_getuint32(pktin) != ssh->mainchan->localid) { - bombout(("Server's channel confirmation cited wrong channel")); - crStopV; - } - ssh->mainchan->remoteid = ssh_pkt_getuint32(pktin); - ssh->mainchan->halfopen = FALSE; - ssh->mainchan->type = CHAN_MAINSESSION; - ssh->mainchan->v.v2.remwindow = ssh_pkt_getuint32(pktin); - ssh->mainchan->v.v2.remmaxpkt = ssh_pkt_getuint32(pktin); - add234(ssh->channels, ssh->mainchan); - update_specials_menu(ssh->frontend); - logevent("Opened channel for session"); - ssh->ncmode = FALSE; - } - - /* - * Now we have a channel, make dispatch table entries for - * general channel-based messages. - */ - ssh->packet_dispatch[SSH2_MSG_CHANNEL_DATA] = - ssh->packet_dispatch[SSH2_MSG_CHANNEL_EXTENDED_DATA] = - ssh2_msg_channel_data; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_EOF] = ssh2_msg_channel_eof; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_CLOSE] = ssh2_msg_channel_close; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_OPEN_CONFIRMATION] = - ssh2_msg_channel_open_confirmation; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_OPEN_FAILURE] = - ssh2_msg_channel_open_failure; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_REQUEST] = - ssh2_msg_channel_request; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_OPEN] = - ssh2_msg_channel_open; - - if (ssh->mainchan && ssh->cfg.ssh_simple) { - /* - * This message indicates to the server that we promise - * not to try to run any other channel in parallel with - * this one, so it's safe for it to advertise a very large - * window and leave the flow control to TCP. - */ - s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->remoteid); - ssh2_pkt_addstring(s->pktout, "simple@putty.projects.tartarus.org"); - ssh2_pkt_addbool(s->pktout, 0); /* no reply */ - ssh2_pkt_send(ssh, s->pktout); - } - - /* - * Potentially enable X11 forwarding. - */ - if (ssh->mainchan && !ssh->ncmode && ssh->cfg.x11_forward && - (ssh->x11disp = x11_setup_display(ssh->cfg.x11_display, - ssh->cfg.x11_auth, &ssh->cfg))) { - logevent("Requesting X11 forwarding"); - s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->remoteid); - ssh2_pkt_addstring(s->pktout, "x11-req"); - ssh2_pkt_addbool(s->pktout, 1); /* want reply */ - ssh2_pkt_addbool(s->pktout, 0); /* many connections */ - ssh2_pkt_addstring(s->pktout, ssh->x11disp->remoteauthprotoname); - /* - * Note that while we blank the X authentication data here, we don't - * take any special action to blank the start of an X11 channel, - * so using MIT-MAGIC-COOKIE-1 and actually opening an X connection - * without having session blanking enabled is likely to leak your - * cookie into the log. - */ - dont_log_password(ssh, s->pktout, PKTLOG_BLANK); - ssh2_pkt_addstring(s->pktout, ssh->x11disp->remoteauthdatastring); - end_log_omission(ssh, s->pktout); - ssh2_pkt_adduint32(s->pktout, ssh->x11disp->screennum); - ssh2_pkt_send(ssh, s->pktout); - - crWaitUntilV(pktin); - - if (pktin->type != SSH2_MSG_CHANNEL_SUCCESS) { - if (pktin->type != SSH2_MSG_CHANNEL_FAILURE) { - bombout(("Unexpected response to X11 forwarding request:" - " packet type %d", pktin->type)); - crStopV; - } - logevent("X11 forwarding refused"); - } else { - logevent("X11 forwarding enabled"); - ssh->X11_fwd_enabled = TRUE; - } - } - - /* - * Enable port forwardings. - */ - ssh_setup_portfwd(ssh, &ssh->cfg); - - /* - * Potentially enable agent forwarding. - */ - if (ssh->mainchan && !ssh->ncmode && ssh->cfg.agentfwd && agent_exists()) { - logevent("Requesting OpenSSH-style agent forwarding"); - s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->remoteid); - ssh2_pkt_addstring(s->pktout, "auth-agent-req@openssh.com"); - ssh2_pkt_addbool(s->pktout, 1); /* want reply */ - ssh2_pkt_send(ssh, s->pktout); - - crWaitUntilV(pktin); - - if (pktin->type != SSH2_MSG_CHANNEL_SUCCESS) { - if (pktin->type != SSH2_MSG_CHANNEL_FAILURE) { - bombout(("Unexpected response to agent forwarding request:" - " packet type %d", pktin->type)); - crStopV; - } - logevent("Agent forwarding refused"); - } else { - logevent("Agent forwarding enabled"); - ssh->agentfwd_enabled = TRUE; - } - } - - /* - * Now allocate a pty for the session. - */ - if (ssh->mainchan && !ssh->ncmode && !ssh->cfg.nopty) { - /* Unpick the terminal-speed string. */ - /* XXX perhaps we should allow no speeds to be sent. */ - ssh->ospeed = 38400; ssh->ispeed = 38400; /* last-resort defaults */ - sscanf(ssh->cfg.termspeed, "%d,%d", &ssh->ospeed, &ssh->ispeed); - /* Build the pty request. */ - s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->remoteid); /* recipient channel */ - ssh2_pkt_addstring(s->pktout, "pty-req"); - ssh2_pkt_addbool(s->pktout, 1); /* want reply */ - ssh2_pkt_addstring(s->pktout, ssh->cfg.termtype); - ssh2_pkt_adduint32(s->pktout, ssh->term_width); - ssh2_pkt_adduint32(s->pktout, ssh->term_height); - ssh2_pkt_adduint32(s->pktout, 0); /* pixel width */ - ssh2_pkt_adduint32(s->pktout, 0); /* pixel height */ - ssh2_pkt_addstring_start(s->pktout); - parse_ttymodes(ssh, ssh->cfg.ttymodes, - ssh2_send_ttymode, (void *)s->pktout); - ssh2_pkt_addbyte(s->pktout, SSH2_TTY_OP_ISPEED); - ssh2_pkt_adduint32(s->pktout, ssh->ispeed); - ssh2_pkt_addbyte(s->pktout, SSH2_TTY_OP_OSPEED); - ssh2_pkt_adduint32(s->pktout, ssh->ospeed); - ssh2_pkt_addstring_data(s->pktout, "\0", 1); /* TTY_OP_END */ - ssh2_pkt_send(ssh, s->pktout); - ssh->state = SSH_STATE_INTERMED; - - crWaitUntilV(pktin); - - if (pktin->type != SSH2_MSG_CHANNEL_SUCCESS) { - if (pktin->type != SSH2_MSG_CHANNEL_FAILURE) { - bombout(("Unexpected response to pty request:" - " packet type %d", pktin->type)); - crStopV; - } - c_write_str(ssh, "Server refused to allocate pty\r\n"); - ssh->editing = ssh->echoing = 1; - } else { - logeventf(ssh, "Allocated pty (ospeed %dbps, ispeed %dbps)", - ssh->ospeed, ssh->ispeed); - } - } else { - ssh->editing = ssh->echoing = 1; - } - - /* - * Send environment variables. - * - * Simplest thing here is to send all the requests at once, and - * then wait for a whole bunch of successes or failures. - */ - if (ssh->mainchan && !ssh->ncmode && *ssh->cfg.environmt) { - char *e = ssh->cfg.environmt; - char *var, *varend, *val; - - s->num_env = 0; - - while (*e) { - var = e; - while (*e && *e != '\t') e++; - varend = e; - if (*e == '\t') e++; - val = e; - while (*e) e++; - e++; - - s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->remoteid); - ssh2_pkt_addstring(s->pktout, "env"); - ssh2_pkt_addbool(s->pktout, 1); /* want reply */ - ssh2_pkt_addstring_start(s->pktout); - ssh2_pkt_addstring_data(s->pktout, var, varend-var); - ssh2_pkt_addstring(s->pktout, val); - ssh2_pkt_send(ssh, s->pktout); - - s->num_env++; - } - - logeventf(ssh, "Sent %d environment variables", s->num_env); - - s->env_ok = 0; - s->env_left = s->num_env; - - while (s->env_left > 0) { - crWaitUntilV(pktin); - - if (pktin->type != SSH2_MSG_CHANNEL_SUCCESS) { - if (pktin->type != SSH2_MSG_CHANNEL_FAILURE) { - bombout(("Unexpected response to environment request:" - " packet type %d", pktin->type)); - crStopV; - } - } else { - s->env_ok++; - } - - s->env_left--; - } - - if (s->env_ok == s->num_env) { - logevent("All environment variables successfully set"); - } else if (s->env_ok == 0) { - logevent("All environment variables refused"); - c_write_str(ssh, "Server refused to set environment variables\r\n"); - } else { - logeventf(ssh, "%d environment variables refused", - s->num_env - s->env_ok); - c_write_str(ssh, "Server refused to set all environment variables\r\n"); - } - } - - /* - * Start a shell or a remote command. We may have to attempt - * this twice if the config data has provided a second choice - * of command. - */ - if (ssh->mainchan && !ssh->ncmode) while (1) { - int subsys; - char *cmd; - - if (ssh->fallback_cmd) { - subsys = ssh->cfg.ssh_subsys2; - cmd = ssh->cfg.remote_cmd_ptr2; - } else { - subsys = ssh->cfg.ssh_subsys; - cmd = ssh->cfg.remote_cmd_ptr; - if (!cmd) cmd = ssh->cfg.remote_cmd; - } - - s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(s->pktout, ssh->mainchan->remoteid); /* recipient channel */ - if (subsys) { - ssh2_pkt_addstring(s->pktout, "subsystem"); - ssh2_pkt_addbool(s->pktout, 1); /* want reply */ - ssh2_pkt_addstring(s->pktout, cmd); - } else if (*cmd) { - ssh2_pkt_addstring(s->pktout, "exec"); - ssh2_pkt_addbool(s->pktout, 1); /* want reply */ - ssh2_pkt_addstring(s->pktout, cmd); - } else { - ssh2_pkt_addstring(s->pktout, "shell"); - ssh2_pkt_addbool(s->pktout, 1); /* want reply */ - } - ssh2_pkt_send(ssh, s->pktout); - - crWaitUntilV(pktin); - - if (pktin->type != SSH2_MSG_CHANNEL_SUCCESS) { - if (pktin->type != SSH2_MSG_CHANNEL_FAILURE) { - bombout(("Unexpected response to shell/command request:" - " packet type %d", pktin->type)); - crStopV; - } - /* - * We failed to start the command. If this is the - * fallback command, we really are finished; if it's - * not, and if the fallback command exists, try falling - * back to it before complaining. - */ - if (!ssh->fallback_cmd && ssh->cfg.remote_cmd_ptr2 != NULL) { - logevent("Primary command failed; attempting fallback"); - ssh->fallback_cmd = TRUE; - continue; - } - bombout(("Server refused to start a shell/command")); - crStopV; - } else { - logevent("Started a shell/command"); - } - break; - } - - ssh->state = SSH_STATE_SESSION; - if (ssh->size_needed) - ssh_size(ssh, ssh->term_width, ssh->term_height); - if (ssh->eof_needed) - ssh_special(ssh, TS_EOF); - - /* - * All the initial channel requests are done, so install the default - * failure handler. - */ - ssh->packet_dispatch[SSH2_MSG_CHANNEL_SUCCESS] = ssh2_msg_channel_success; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_FAILURE] = ssh2_msg_channel_failure; - - /* - * Transfer data! - */ - if (ssh->ldisc) - ldisc_send(ssh->ldisc, NULL, 0, 0);/* cause ldisc to notice changes */ - if (ssh->mainchan) - ssh->send_ok = 1; - while (1) { - crReturnV; - s->try_send = FALSE; - if (pktin) { - - /* - * _All_ the connection-layer packets we expect to - * receive are now handled by the dispatch table. - * Anything that reaches here must be bogus. - */ - - bombout(("Strange packet received: type %d", pktin->type)); - crStopV; - } else if (ssh->mainchan) { - /* - * We have spare data. Add it to the channel buffer. - */ - ssh2_add_channel_data(ssh->mainchan, (char *)in, inlen); - s->try_send = TRUE; - } - if (s->try_send) { - int i; - struct ssh_channel *c; - /* - * Try to send data on all channels if we can. - */ - for (i = 0; NULL != (c = index234(ssh->channels, i)); i++) - ssh2_try_send_and_unthrottle(c); - } - } - - crFinishV; -} - -/* - * Handlers for SSH-2 messages that might arrive at any moment. - */ -static void ssh2_msg_disconnect(Ssh ssh, struct Packet *pktin) -{ - /* log reason code in disconnect message */ - char *buf, *msg; - int reason, msglen; - - reason = ssh_pkt_getuint32(pktin); - ssh_pkt_getstring(pktin, &msg, &msglen); - - if (reason > 0 && reason < lenof(ssh2_disconnect_reasons)) { - buf = dupprintf("Received disconnect message (%s)", - ssh2_disconnect_reasons[reason]); - } else { - buf = dupprintf("Received disconnect message (unknown" - " type %d)", reason); - } - logevent(buf); - sfree(buf); - buf = dupprintf("Disconnection message text: %.*s", - msglen, msg); - logevent(buf); - bombout(("Server sent disconnect message\ntype %d (%s):\n\"%.*s\"", - reason, - (reason > 0 && reason < lenof(ssh2_disconnect_reasons)) ? - ssh2_disconnect_reasons[reason] : "unknown", - msglen, msg)); - sfree(buf); -} - -static void ssh2_msg_debug(Ssh ssh, struct Packet *pktin) -{ - /* log the debug message */ - char *msg; - int msglen; - int always_display; - - /* XXX maybe we should actually take notice of this */ - always_display = ssh2_pkt_getbool(pktin); - ssh_pkt_getstring(pktin, &msg, &msglen); - - logeventf(ssh, "Remote debug message: %.*s", msglen, msg); -} - -static void ssh2_msg_something_unimplemented(Ssh ssh, struct Packet *pktin) -{ - struct Packet *pktout; - pktout = ssh2_pkt_init(SSH2_MSG_UNIMPLEMENTED); - ssh2_pkt_adduint32(pktout, pktin->sequence); - /* - * UNIMPLEMENTED messages MUST appear in the same order as the - * messages they respond to. Hence, never queue them. - */ - ssh2_pkt_send_noqueue(ssh, pktout); -} - -/* - * Handle the top-level SSH-2 protocol. - */ -static void ssh2_protocol_setup(Ssh ssh) -{ - int i; - - /* - * Most messages cause SSH2_MSG_UNIMPLEMENTED. - */ - for (i = 0; i < 256; i++) - ssh->packet_dispatch[i] = ssh2_msg_something_unimplemented; - - /* - * Any message we actually understand, we set to NULL so that - * the coroutines will get it. - */ - ssh->packet_dispatch[SSH2_MSG_UNIMPLEMENTED] = NULL; - ssh->packet_dispatch[SSH2_MSG_SERVICE_REQUEST] = NULL; - ssh->packet_dispatch[SSH2_MSG_SERVICE_ACCEPT] = NULL; - ssh->packet_dispatch[SSH2_MSG_KEXINIT] = NULL; - ssh->packet_dispatch[SSH2_MSG_NEWKEYS] = NULL; - ssh->packet_dispatch[SSH2_MSG_KEXDH_INIT] = NULL; - ssh->packet_dispatch[SSH2_MSG_KEXDH_REPLY] = NULL; - /* ssh->packet_dispatch[SSH2_MSG_KEX_DH_GEX_REQUEST] = NULL; duplicate case value */ - /* ssh->packet_dispatch[SSH2_MSG_KEX_DH_GEX_GROUP] = NULL; duplicate case value */ - ssh->packet_dispatch[SSH2_MSG_KEX_DH_GEX_INIT] = NULL; - ssh->packet_dispatch[SSH2_MSG_KEX_DH_GEX_REPLY] = NULL; - ssh->packet_dispatch[SSH2_MSG_USERAUTH_REQUEST] = NULL; - ssh->packet_dispatch[SSH2_MSG_USERAUTH_FAILURE] = NULL; - ssh->packet_dispatch[SSH2_MSG_USERAUTH_SUCCESS] = NULL; - ssh->packet_dispatch[SSH2_MSG_USERAUTH_BANNER] = NULL; - ssh->packet_dispatch[SSH2_MSG_USERAUTH_PK_OK] = NULL; - /* ssh->packet_dispatch[SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ] = NULL; duplicate case value */ - /* ssh->packet_dispatch[SSH2_MSG_USERAUTH_INFO_REQUEST] = NULL; duplicate case value */ - ssh->packet_dispatch[SSH2_MSG_USERAUTH_INFO_RESPONSE] = NULL; - ssh->packet_dispatch[SSH2_MSG_GLOBAL_REQUEST] = NULL; - ssh->packet_dispatch[SSH2_MSG_REQUEST_SUCCESS] = NULL; - ssh->packet_dispatch[SSH2_MSG_REQUEST_FAILURE] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_OPEN] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_OPEN_CONFIRMATION] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_OPEN_FAILURE] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_WINDOW_ADJUST] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_DATA] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_EXTENDED_DATA] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_EOF] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_CLOSE] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_REQUEST] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_SUCCESS] = NULL; - ssh->packet_dispatch[SSH2_MSG_CHANNEL_FAILURE] = NULL; - - /* - * These special message types we install handlers for. - */ - ssh->packet_dispatch[SSH2_MSG_DISCONNECT] = ssh2_msg_disconnect; - ssh->packet_dispatch[SSH2_MSG_IGNORE] = ssh_msg_ignore; /* shared with SSH-1 */ - ssh->packet_dispatch[SSH2_MSG_DEBUG] = ssh2_msg_debug; -} - -static void ssh2_timer(void *ctx, long now) -{ - Ssh ssh = (Ssh)ctx; - - if (ssh->state == SSH_STATE_CLOSED) - return; - - if (!ssh->kex_in_progress && ssh->cfg.ssh_rekey_time != 0 && - now - ssh->next_rekey >= 0) { - do_ssh2_transport(ssh, "timeout", -1, NULL); - } -} - -static void ssh2_protocol(Ssh ssh, void *vin, int inlen, - struct Packet *pktin) -{ - unsigned char *in = (unsigned char *)vin; - if (ssh->state == SSH_STATE_CLOSED) - return; - - if (pktin) { - ssh->incoming_data_size += pktin->encrypted_len; - if (!ssh->kex_in_progress && - ssh->max_data_size != 0 && - ssh->incoming_data_size > ssh->max_data_size) - do_ssh2_transport(ssh, "too much data received", -1, NULL); - } - - if (pktin && ssh->packet_dispatch[pktin->type]) { - ssh->packet_dispatch[pktin->type](ssh, pktin); - return; - } - - if (!ssh->protocol_initial_phase_done || - (pktin && pktin->type >= 20 && pktin->type < 50)) { - if (do_ssh2_transport(ssh, in, inlen, pktin) && - !ssh->protocol_initial_phase_done) { - ssh->protocol_initial_phase_done = TRUE; - /* - * Allow authconn to initialise itself. - */ - do_ssh2_authconn(ssh, NULL, 0, NULL); - } - } else { - do_ssh2_authconn(ssh, in, inlen, pktin); - } -} - -/* - * Called to set up the connection. - * - * Returns an error message, or NULL on success. - */ -static const char *ssh_init(void *frontend_handle, void **backend_handle, - Config *cfg, - char *host, int port, char **realhost, int nodelay, - int keepalive) -{ - const char *p; - Ssh ssh; - - ssh = snew(struct ssh_tag); - ssh->cfg = *cfg; /* STRUCTURE COPY */ - ssh->version = 0; /* when not ready yet */ - ssh->s = NULL; - ssh->cipher = NULL; - ssh->v1_cipher_ctx = NULL; - ssh->crcda_ctx = NULL; - ssh->cscipher = NULL; - ssh->cs_cipher_ctx = NULL; - ssh->sccipher = NULL; - ssh->sc_cipher_ctx = NULL; - ssh->csmac = NULL; - ssh->cs_mac_ctx = NULL; - ssh->scmac = NULL; - ssh->sc_mac_ctx = NULL; - ssh->cscomp = NULL; - ssh->cs_comp_ctx = NULL; - ssh->sccomp = NULL; - ssh->sc_comp_ctx = NULL; - ssh->kex = NULL; - ssh->kex_ctx = NULL; - ssh->hostkey = NULL; - ssh->exitcode = -1; - ssh->close_expected = FALSE; - ssh->clean_exit = FALSE; - ssh->state = SSH_STATE_PREPACKET; - ssh->size_needed = FALSE; - ssh->eof_needed = FALSE; - ssh->ldisc = NULL; - ssh->logctx = NULL; - ssh->deferred_send_data = NULL; - ssh->deferred_len = 0; - ssh->deferred_size = 0; - ssh->fallback_cmd = 0; - ssh->pkt_kctx = SSH2_PKTCTX_NOKEX; - ssh->pkt_actx = SSH2_PKTCTX_NOAUTH; - ssh->x11disp = NULL; - ssh->v1_compressing = FALSE; - ssh->v2_outgoing_sequence = 0; - ssh->ssh1_rdpkt_crstate = 0; - ssh->ssh2_rdpkt_crstate = 0; - ssh->do_ssh_init_crstate = 0; - ssh->ssh_gotdata_crstate = 0; - ssh->do_ssh1_connection_crstate = 0; - ssh->do_ssh1_login_crstate = 0; - ssh->do_ssh2_transport_crstate = 0; - ssh->do_ssh2_authconn_crstate = 0; - ssh->do_ssh_init_state = NULL; - ssh->do_ssh1_login_state = NULL; - ssh->do_ssh2_transport_state = NULL; - ssh->do_ssh2_authconn_state = NULL; - ssh->v_c = NULL; - ssh->v_s = NULL; - ssh->mainchan = NULL; - ssh->throttled_all = 0; - ssh->v1_stdout_throttling = 0; - ssh->queue = NULL; - ssh->queuelen = ssh->queuesize = 0; - ssh->queueing = FALSE; - ssh->qhead = ssh->qtail = NULL; - ssh->deferred_rekey_reason = NULL; - bufchain_init(&ssh->queued_incoming_data); - ssh->frozen = FALSE; - - *backend_handle = ssh; - -#ifdef MSCRYPTOAPI - if (crypto_startup() == 0) - return "Microsoft high encryption pack not installed!"; -#endif - - ssh->frontend = frontend_handle; - ssh->term_width = ssh->cfg.width; - ssh->term_height = ssh->cfg.height; - - ssh->channels = NULL; - ssh->rportfwds = NULL; - ssh->portfwds = NULL; - - ssh->send_ok = 0; - ssh->editing = 0; - ssh->echoing = 0; - ssh->conn_throttle_count = 0; - ssh->overall_bufsize = 0; - ssh->fallback_cmd = 0; - - ssh->protocol = NULL; - - ssh->protocol_initial_phase_done = FALSE; - - ssh->pinger = NULL; - - ssh->incoming_data_size = ssh->outgoing_data_size = - ssh->deferred_data_size = 0L; - ssh->max_data_size = parse_blocksize(ssh->cfg.ssh_rekey_data); - ssh->kex_in_progress = FALSE; - - p = connect_to_host(ssh, host, port, realhost, nodelay, keepalive); - if (p != NULL) - return p; - - random_ref(); - - return NULL; -} - -static void ssh_free(void *handle) -{ - Ssh ssh = (Ssh) handle; - struct ssh_channel *c; - struct ssh_rportfwd *pf; - - if (ssh->v1_cipher_ctx) - ssh->cipher->free_context(ssh->v1_cipher_ctx); - if (ssh->cs_cipher_ctx) - ssh->cscipher->free_context(ssh->cs_cipher_ctx); - if (ssh->sc_cipher_ctx) - ssh->sccipher->free_context(ssh->sc_cipher_ctx); - if (ssh->cs_mac_ctx) - ssh->csmac->free_context(ssh->cs_mac_ctx); - if (ssh->sc_mac_ctx) - ssh->scmac->free_context(ssh->sc_mac_ctx); - if (ssh->cs_comp_ctx) { - if (ssh->cscomp) - ssh->cscomp->compress_cleanup(ssh->cs_comp_ctx); - else - zlib_compress_cleanup(ssh->cs_comp_ctx); - } - if (ssh->sc_comp_ctx) { - if (ssh->sccomp) - ssh->sccomp->decompress_cleanup(ssh->sc_comp_ctx); - else - zlib_decompress_cleanup(ssh->sc_comp_ctx); - } - if (ssh->kex_ctx) - dh_cleanup(ssh->kex_ctx); - sfree(ssh->savedhost); - - while (ssh->queuelen-- > 0) - ssh_free_packet(ssh->queue[ssh->queuelen]); - sfree(ssh->queue); - - while (ssh->qhead) { - struct queued_handler *qh = ssh->qhead; - ssh->qhead = qh->next; - sfree(ssh->qhead); - } - ssh->qhead = ssh->qtail = NULL; - - if (ssh->channels) { - while ((c = delpos234(ssh->channels, 0)) != NULL) { - switch (c->type) { - case CHAN_X11: - if (c->u.x11.s != NULL) - x11_close(c->u.x11.s); - break; - case CHAN_SOCKDATA: - if (c->u.pfd.s != NULL) - pfd_close(c->u.pfd.s); - break; - } - sfree(c); - } - freetree234(ssh->channels); - ssh->channels = NULL; - } - - if (ssh->rportfwds) { - while ((pf = delpos234(ssh->rportfwds, 0)) != NULL) - sfree(pf); - freetree234(ssh->rportfwds); - ssh->rportfwds = NULL; - } - sfree(ssh->deferred_send_data); - if (ssh->x11disp) - x11_free_display(ssh->x11disp); - sfree(ssh->do_ssh_init_state); - sfree(ssh->do_ssh1_login_state); - sfree(ssh->do_ssh2_transport_state); - sfree(ssh->do_ssh2_authconn_state); - sfree(ssh->v_c); - sfree(ssh->v_s); - sfree(ssh->fullhostname); - if (ssh->crcda_ctx) { - crcda_free_context(ssh->crcda_ctx); - ssh->crcda_ctx = NULL; - } - if (ssh->s) - ssh_do_close(ssh, TRUE); - expire_timer_context(ssh); - if (ssh->pinger) - pinger_free(ssh->pinger); - bufchain_clear(&ssh->queued_incoming_data); - sfree(ssh); - - random_unref(); -} - -/* - * Reconfigure the SSH backend. - */ -static void ssh_reconfig(void *handle, Config *cfg) -{ - Ssh ssh = (Ssh) handle; - char *rekeying = NULL, rekey_mandatory = FALSE; - unsigned long old_max_data_size; - - pinger_reconfig(ssh->pinger, &ssh->cfg, cfg); - if (ssh->portfwds) - ssh_setup_portfwd(ssh, cfg); - - if (ssh->cfg.ssh_rekey_time != cfg->ssh_rekey_time && - cfg->ssh_rekey_time != 0) { - long new_next = ssh->last_rekey + cfg->ssh_rekey_time*60*TICKSPERSEC; - long now = GETTICKCOUNT(); - - if (new_next - now < 0) { - rekeying = "timeout shortened"; - } else { - ssh->next_rekey = schedule_timer(new_next - now, ssh2_timer, ssh); - } - } - - old_max_data_size = ssh->max_data_size; - ssh->max_data_size = parse_blocksize(cfg->ssh_rekey_data); - if (old_max_data_size != ssh->max_data_size && - ssh->max_data_size != 0) { - if (ssh->outgoing_data_size > ssh->max_data_size || - ssh->incoming_data_size > ssh->max_data_size) - rekeying = "data limit lowered"; - } - - if (ssh->cfg.compression != cfg->compression) { - rekeying = "compression setting changed"; - rekey_mandatory = TRUE; - } - - if (ssh->cfg.ssh2_des_cbc != cfg->ssh2_des_cbc || - memcmp(ssh->cfg.ssh_cipherlist, cfg->ssh_cipherlist, - sizeof(ssh->cfg.ssh_cipherlist))) { - rekeying = "cipher settings changed"; - rekey_mandatory = TRUE; - } - - ssh->cfg = *cfg; /* STRUCTURE COPY */ - - if (rekeying) { - if (!ssh->kex_in_progress) { - do_ssh2_transport(ssh, rekeying, -1, NULL); - } else if (rekey_mandatory) { - ssh->deferred_rekey_reason = rekeying; - } - } -} - -/* - * Called to send data down the SSH connection. - */ -static int ssh_send(void *handle, char *buf, int len) -{ - Ssh ssh = (Ssh) handle; - - if (ssh == NULL || ssh->s == NULL || ssh->protocol == NULL) - return 0; - - ssh->protocol(ssh, (unsigned char *)buf, len, 0); - - return ssh_sendbuffer(ssh); -} - -/* - * Called to query the current amount of buffered stdin data. - */ -static int ssh_sendbuffer(void *handle) -{ - Ssh ssh = (Ssh) handle; - int override_value; - - if (ssh == NULL || ssh->s == NULL || ssh->protocol == NULL) - return 0; - - /* - * If the SSH socket itself has backed up, add the total backup - * size on that to any individual buffer on the stdin channel. - */ - override_value = 0; - if (ssh->throttled_all) - override_value = ssh->overall_bufsize; - - if (ssh->version == 1) { - return override_value; - } else if (ssh->version == 2) { - if (!ssh->mainchan || ssh->mainchan->closes > 0) - return override_value; - else - return (override_value + - bufchain_size(&ssh->mainchan->v.v2.outbuffer)); - } - - return 0; -} - -/* - * Called to set the size of the window from SSH's POV. - */ -static void ssh_size(void *handle, int width, int height) -{ - Ssh ssh = (Ssh) handle; - struct Packet *pktout; - - ssh->term_width = width; - ssh->term_height = height; - - switch (ssh->state) { - case SSH_STATE_BEFORE_SIZE: - case SSH_STATE_PREPACKET: - case SSH_STATE_CLOSED: - break; /* do nothing */ - case SSH_STATE_INTERMED: - ssh->size_needed = TRUE; /* buffer for later */ - break; - case SSH_STATE_SESSION: - if (!ssh->cfg.nopty) { - if (ssh->version == 1) { - send_packet(ssh, SSH1_CMSG_WINDOW_SIZE, - PKT_INT, ssh->term_height, - PKT_INT, ssh->term_width, - PKT_INT, 0, PKT_INT, 0, PKT_END); - } else if (ssh->mainchan) { - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(pktout, ssh->mainchan->remoteid); - ssh2_pkt_addstring(pktout, "window-change"); - ssh2_pkt_addbool(pktout, 0); - ssh2_pkt_adduint32(pktout, ssh->term_width); - ssh2_pkt_adduint32(pktout, ssh->term_height); - ssh2_pkt_adduint32(pktout, 0); - ssh2_pkt_adduint32(pktout, 0); - ssh2_pkt_send(ssh, pktout); - } - } - break; - } -} - -/* - * Return a list of the special codes that make sense in this - * protocol. - */ -static const struct telnet_special *ssh_get_specials(void *handle) -{ - static const struct telnet_special ssh1_ignore_special[] = { - {"IGNORE message", TS_NOP} - }; - static const struct telnet_special ssh2_transport_specials[] = { - {"IGNORE message", TS_NOP}, - {"Repeat key exchange", TS_REKEY}, - }; - static const struct telnet_special ssh2_session_specials[] = { - {NULL, TS_SEP}, - {"Break", TS_BRK}, - /* These are the signal names defined by RFC 4254. - * They include all the ISO C signals, but are a subset of the POSIX - * required signals. */ - {"SIGINT (Interrupt)", TS_SIGINT}, - {"SIGTERM (Terminate)", TS_SIGTERM}, - {"SIGKILL (Kill)", TS_SIGKILL}, - {"SIGQUIT (Quit)", TS_SIGQUIT}, - {"SIGHUP (Hangup)", TS_SIGHUP}, - {"More signals", TS_SUBMENU}, - {"SIGABRT", TS_SIGABRT}, {"SIGALRM", TS_SIGALRM}, - {"SIGFPE", TS_SIGFPE}, {"SIGILL", TS_SIGILL}, - {"SIGPIPE", TS_SIGPIPE}, {"SIGSEGV", TS_SIGSEGV}, - {"SIGUSR1", TS_SIGUSR1}, {"SIGUSR2", TS_SIGUSR2}, - {NULL, TS_EXITMENU} - }; - static const struct telnet_special specials_end[] = { - {NULL, TS_EXITMENU} - }; - /* XXX review this length for any changes: */ - static struct telnet_special ssh_specials[lenof(ssh2_transport_specials) + - lenof(ssh2_session_specials) + - lenof(specials_end)]; - Ssh ssh = (Ssh) handle; - int i = 0; -#define ADD_SPECIALS(name) \ - do { \ - assert((i + lenof(name)) <= lenof(ssh_specials)); \ - memcpy(&ssh_specials[i], name, sizeof name); \ - i += lenof(name); \ - } while(0) - - if (ssh->version == 1) { - /* Don't bother offering IGNORE if we've decided the remote - * won't cope with it, since we wouldn't bother sending it if - * asked anyway. */ - if (!(ssh->remote_bugs & BUG_CHOKES_ON_SSH1_IGNORE)) - ADD_SPECIALS(ssh1_ignore_special); - } else if (ssh->version == 2) { - ADD_SPECIALS(ssh2_transport_specials); - if (ssh->mainchan) - ADD_SPECIALS(ssh2_session_specials); - } /* else we're not ready yet */ - - if (i) { - ADD_SPECIALS(specials_end); - return ssh_specials; - } else { - return NULL; - } -#undef ADD_SPECIALS -} - -/* - * Send special codes. TS_EOF is useful for `plink', so you - * can send an EOF and collect resulting output (e.g. `plink - * hostname sort'). - */ -static void ssh_special(void *handle, Telnet_Special code) -{ - Ssh ssh = (Ssh) handle; - struct Packet *pktout; - - if (code == TS_EOF) { - if (ssh->state != SSH_STATE_SESSION) { - /* - * Buffer the EOF in case we are pre-SESSION, so we can - * send it as soon as we reach SESSION. - */ - if (code == TS_EOF) - ssh->eof_needed = TRUE; - return; - } - if (ssh->version == 1) { - send_packet(ssh, SSH1_CMSG_EOF, PKT_END); - } else if (ssh->mainchan) { - struct Packet *pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_EOF); - ssh2_pkt_adduint32(pktout, ssh->mainchan->remoteid); - ssh2_pkt_send(ssh, pktout); - ssh->send_ok = 0; /* now stop trying to read from stdin */ - } - logevent("Sent EOF message"); - } else if (code == TS_PING || code == TS_NOP) { - if (ssh->state == SSH_STATE_CLOSED - || ssh->state == SSH_STATE_PREPACKET) return; - if (ssh->version == 1) { - if (!(ssh->remote_bugs & BUG_CHOKES_ON_SSH1_IGNORE)) - send_packet(ssh, SSH1_MSG_IGNORE, PKT_STR, "", PKT_END); - } else { - pktout = ssh2_pkt_init(SSH2_MSG_IGNORE); - ssh2_pkt_addstring_start(pktout); - ssh2_pkt_send_noqueue(ssh, pktout); - } - } else if (code == TS_REKEY) { - if (!ssh->kex_in_progress && ssh->version == 2) { - do_ssh2_transport(ssh, "at user request", -1, NULL); - } - } else if (code == TS_BRK) { - if (ssh->state == SSH_STATE_CLOSED - || ssh->state == SSH_STATE_PREPACKET) return; - if (ssh->version == 1) { - logevent("Unable to send BREAK signal in SSH-1"); - } else if (ssh->mainchan) { - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(pktout, ssh->mainchan->remoteid); - ssh2_pkt_addstring(pktout, "break"); - ssh2_pkt_addbool(pktout, 0); - ssh2_pkt_adduint32(pktout, 0); /* default break length */ - ssh2_pkt_send(ssh, pktout); - } - } else { - /* Is is a POSIX signal? */ - char *signame = NULL; - if (code == TS_SIGABRT) signame = "ABRT"; - if (code == TS_SIGALRM) signame = "ALRM"; - if (code == TS_SIGFPE) signame = "FPE"; - if (code == TS_SIGHUP) signame = "HUP"; - if (code == TS_SIGILL) signame = "ILL"; - if (code == TS_SIGINT) signame = "INT"; - if (code == TS_SIGKILL) signame = "KILL"; - if (code == TS_SIGPIPE) signame = "PIPE"; - if (code == TS_SIGQUIT) signame = "QUIT"; - if (code == TS_SIGSEGV) signame = "SEGV"; - if (code == TS_SIGTERM) signame = "TERM"; - if (code == TS_SIGUSR1) signame = "USR1"; - if (code == TS_SIGUSR2) signame = "USR2"; - /* The SSH-2 protocol does in principle support arbitrary named - * signals, including signame@domain, but we don't support those. */ - if (signame) { - /* It's a signal. */ - if (ssh->version == 2 && ssh->mainchan) { - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST); - ssh2_pkt_adduint32(pktout, ssh->mainchan->remoteid); - ssh2_pkt_addstring(pktout, "signal"); - ssh2_pkt_addbool(pktout, 0); - ssh2_pkt_addstring(pktout, signame); - ssh2_pkt_send(ssh, pktout); - logeventf(ssh, "Sent signal SIG%s", signame); - } - } else { - /* Never heard of it. Do nothing */ - } - } -} - -void *new_sock_channel(void *handle, Socket s) -{ - Ssh ssh = (Ssh) handle; - struct ssh_channel *c; - c = snew(struct ssh_channel); - - c->ssh = ssh; - ssh2_channel_init(c); - c->halfopen = TRUE; - c->type = CHAN_SOCKDATA_DORMANT;/* identify channel type */ - c->u.pfd.s = s; - add234(ssh->channels, c); - return c; -} - -/* - * This is called when stdout/stderr (the entity to which - * from_backend sends data) manages to clear some backlog. - */ -static void ssh_unthrottle(void *handle, int bufsize) -{ - Ssh ssh = (Ssh) handle; - int buflimit; - - if (ssh->version == 1) { - if (ssh->v1_stdout_throttling && bufsize < SSH1_BUFFER_LIMIT) { - ssh->v1_stdout_throttling = 0; - ssh_throttle_conn(ssh, -1); - } - } else { - if (ssh->mainchan) { - ssh2_set_window(ssh->mainchan, - bufsize < ssh->mainchan->v.v2.locmaxwin ? - ssh->mainchan->v.v2.locmaxwin - bufsize : 0); - if (ssh->cfg.ssh_simple) - buflimit = 0; - else - buflimit = ssh->mainchan->v.v2.locmaxwin; - if (ssh->mainchan->throttling_conn && bufsize <= buflimit) { - ssh->mainchan->throttling_conn = 0; - ssh_throttle_conn(ssh, -1); - } - } - } -} - -void ssh_send_port_open(void *channel, char *hostname, int port, char *org) -{ - struct ssh_channel *c = (struct ssh_channel *)channel; - Ssh ssh = c->ssh; - struct Packet *pktout; - - logeventf(ssh, "Opening forwarded connection to %s:%d", hostname, port); - - if (ssh->version == 1) { - send_packet(ssh, SSH1_MSG_PORT_OPEN, - PKT_INT, c->localid, - PKT_STR, hostname, - PKT_INT, port, - /* PKT_STR, , */ - PKT_END); - } else { - pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN); - ssh2_pkt_addstring(pktout, "direct-tcpip"); - ssh2_pkt_adduint32(pktout, c->localid); - ssh2_pkt_adduint32(pktout, c->v.v2.locwindow);/* our window size */ - ssh2_pkt_adduint32(pktout, OUR_V2_MAXPKT); /* our max pkt size */ - ssh2_pkt_addstring(pktout, hostname); - ssh2_pkt_adduint32(pktout, port); - /* - * We make up values for the originator data; partly it's - * too much hassle to keep track, and partly I'm not - * convinced the server should be told details like that - * about my local network configuration. - * The "originator IP address" is syntactically a numeric - * IP address, and some servers (e.g., Tectia) get upset - * if it doesn't match this syntax. - */ - ssh2_pkt_addstring(pktout, "0.0.0.0"); - ssh2_pkt_adduint32(pktout, 0); - ssh2_pkt_send(ssh, pktout); - } -} - -static int ssh_connected(void *handle) -{ - Ssh ssh = (Ssh) handle; - return ssh->s != NULL; -} - -static int ssh_sendok(void *handle) -{ - Ssh ssh = (Ssh) handle; - return ssh->send_ok; -} - -static int ssh_ldisc(void *handle, int option) -{ - Ssh ssh = (Ssh) handle; - if (option == LD_ECHO) - return ssh->echoing; - if (option == LD_EDIT) - return ssh->editing; - return FALSE; -} - -static void ssh_provide_ldisc(void *handle, void *ldisc) -{ - Ssh ssh = (Ssh) handle; - ssh->ldisc = ldisc; -} - -static void ssh_provide_logctx(void *handle, void *logctx) -{ - Ssh ssh = (Ssh) handle; - ssh->logctx = logctx; -} - -static int ssh_return_exitcode(void *handle) -{ - Ssh ssh = (Ssh) handle; - if (ssh->s != NULL) - return -1; - else - return (ssh->exitcode >= 0 ? ssh->exitcode : INT_MAX); -} - -/* - * cfg_info for SSH is the currently running version of the - * protocol. (1 for 1; 2 for 2; 0 for not-decided-yet.) - */ -static int ssh_cfg_info(void *handle) -{ - Ssh ssh = (Ssh) handle; - return ssh->version; -} - -/* - * Gross hack: pscp will try to start SFTP but fall back to scp1 if - * that fails. This variable is the means by which scp.c can reach - * into the SSH code and find out which one it got. - */ -extern int ssh_fallback_cmd(void *handle) -{ - Ssh ssh = (Ssh) handle; - return ssh->fallback_cmd; -} - -Backend ssh_backend = { - ssh_init, - ssh_free, - ssh_reconfig, - ssh_send, - ssh_sendbuffer, - ssh_size, - ssh_special, - ssh_get_specials, - ssh_connected, - ssh_return_exitcode, - ssh_sendok, - ssh_ldisc, - ssh_provide_ldisc, - ssh_provide_logctx, - ssh_unthrottle, - ssh_cfg_info, - "ssh", - PROT_SSH, - 22 -}; diff --git a/tools/plink/ssh.h b/tools/plink/ssh.h deleted file mode 100644 index 814939c2b..000000000 --- a/tools/plink/ssh.h +++ /dev/null @@ -1,583 +0,0 @@ -#include -#include - -#include "puttymem.h" -#include "tree234.h" -#include "network.h" -#include "int64.h" -#include "misc.h" - -struct ssh_channel; - -extern void sshfwd_close(struct ssh_channel *c); -extern int sshfwd_write(struct ssh_channel *c, char *, int); -extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize); - -/* - * Useful thing. - */ -#ifndef lenof -#define lenof(x) ( (sizeof((x))) / (sizeof(*(x)))) -#endif - -#define SSH_CIPHER_IDEA 1 -#define SSH_CIPHER_DES 2 -#define SSH_CIPHER_3DES 3 -#define SSH_CIPHER_BLOWFISH 6 - -#ifdef MSCRYPTOAPI -#define APIEXTRA 8 -#else -#define APIEXTRA 0 -#endif - -#ifndef BIGNUM_INTERNAL -typedef void *Bignum; -#endif - -struct RSAKey { - int bits; - int bytes; -#ifdef MSCRYPTOAPI - unsigned long exponent; - unsigned char *modulus; -#else - Bignum modulus; - Bignum exponent; - Bignum private_exponent; - Bignum p; - Bignum q; - Bignum iqmp; -#endif - char *comment; -}; - -struct dss_key { - Bignum p, q, g, y, x; -}; - -int makekey(unsigned char *data, int len, struct RSAKey *result, - unsigned char **keystr, int order); -int makeprivate(unsigned char *data, int len, struct RSAKey *result); -int rsaencrypt(unsigned char *data, int length, struct RSAKey *key); -Bignum rsadecrypt(Bignum input, struct RSAKey *key); -void rsasign(unsigned char *data, int length, struct RSAKey *key); -void rsasanitise(struct RSAKey *key); -int rsastr_len(struct RSAKey *key); -void rsastr_fmt(char *str, struct RSAKey *key); -void rsa_fingerprint(char *str, int len, struct RSAKey *key); -int rsa_verify(struct RSAKey *key); -unsigned char *rsa_public_blob(struct RSAKey *key, int *len); -int rsa_public_blob_len(void *data, int maxlen); -void freersakey(struct RSAKey *key); - -typedef unsigned int word32; -typedef unsigned int uint32; - -unsigned long crc32_compute(const void *s, size_t len); -unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len); - -/* SSH CRC compensation attack detector */ -void *crcda_make_context(void); -void crcda_free_context(void *handle); -int detect_attack(void *handle, unsigned char *buf, uint32 len, - unsigned char *IV); - -/* - * SSH2 RSA key exchange functions - */ -struct ssh_hash; -void *ssh_rsakex_newkey(char *data, int len); -void ssh_rsakex_freekey(void *key); -int ssh_rsakex_klen(void *key); -void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen, - unsigned char *out, int outlen, - void *key); - -typedef struct { - uint32 h[4]; -} MD5_Core_State; - -struct MD5Context { -#ifdef MSCRYPTOAPI - unsigned long hHash; -#else - MD5_Core_State core; - unsigned char block[64]; - int blkused; - uint32 lenhi, lenlo; -#endif -}; - -void MD5Init(struct MD5Context *context); -void MD5Update(struct MD5Context *context, unsigned char const *buf, - unsigned len); -void MD5Final(unsigned char digest[16], struct MD5Context *context); -void MD5Simple(void const *p, unsigned len, unsigned char output[16]); - -void *hmacmd5_make_context(void); -void hmacmd5_free_context(void *handle); -void hmacmd5_key(void *handle, void const *key, int len); -void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len, - unsigned char *hmac); - -typedef struct { - uint32 h[5]; - unsigned char block[64]; - int blkused; - uint32 lenhi, lenlo; -} SHA_State; -void SHA_Init(SHA_State * s); -void SHA_Bytes(SHA_State * s, void *p, int len); -void SHA_Final(SHA_State * s, unsigned char *output); -void SHA_Simple(void *p, int len, unsigned char *output); - -void hmac_sha1_simple(void *key, int keylen, void *data, int datalen, - unsigned char *output); -typedef struct { - uint32 h[8]; - unsigned char block[64]; - int blkused; - uint32 lenhi, lenlo; -} SHA256_State; -void SHA256_Init(SHA256_State * s); -void SHA256_Bytes(SHA256_State * s, const void *p, int len); -void SHA256_Final(SHA256_State * s, unsigned char *output); -void SHA256_Simple(const void *p, int len, unsigned char *output); - -typedef struct { - uint64 h[8]; - unsigned char block[128]; - int blkused; - uint32 len[4]; -} SHA512_State; -void SHA512_Init(SHA512_State * s); -void SHA512_Bytes(SHA512_State * s, const void *p, int len); -void SHA512_Final(SHA512_State * s, unsigned char *output); -void SHA512_Simple(const void *p, int len, unsigned char *output); - -struct ssh_cipher { - void *(*make_context)(void); - void (*free_context)(void *); - void (*sesskey) (void *, unsigned char *key); /* for SSH-1 */ - void (*encrypt) (void *, unsigned char *blk, int len); - void (*decrypt) (void *, unsigned char *blk, int len); - int blksize; - char *text_name; -}; - -struct ssh2_cipher { - void *(*make_context)(void); - void (*free_context)(void *); - void (*setiv) (void *, unsigned char *key); /* for SSH-2 */ - void (*setkey) (void *, unsigned char *key);/* for SSH-2 */ - void (*encrypt) (void *, unsigned char *blk, int len); - void (*decrypt) (void *, unsigned char *blk, int len); - char *name; - int blksize; - int keylen; - unsigned int flags; -#define SSH_CIPHER_IS_CBC 1 - char *text_name; -}; - -struct ssh2_ciphers { - int nciphers; - const struct ssh2_cipher *const *list; -}; - -struct ssh_mac { - void *(*make_context)(void); - void (*free_context)(void *); - void (*setkey) (void *, unsigned char *key); - /* whole-packet operations */ - void (*generate) (void *, unsigned char *blk, int len, unsigned long seq); - int (*verify) (void *, unsigned char *blk, int len, unsigned long seq); - /* partial-packet operations */ - void (*start) (void *); - void (*bytes) (void *, unsigned char const *, int); - void (*genresult) (void *, unsigned char *); - int (*verresult) (void *, unsigned char const *); - char *name; - int len; - char *text_name; -}; - -struct ssh_hash { - void *(*init)(void); /* also allocates context */ - void (*bytes)(void *, void *, int); - void (*final)(void *, unsigned char *); /* also frees context */ - int hlen; /* output length in bytes */ - char *text_name; -}; - -struct ssh_kex { - char *name, *groupname; - enum { KEXTYPE_DH, KEXTYPE_RSA } main_type; - /* For DH */ - const unsigned char *pdata, *gdata; /* NULL means group exchange */ - int plen, glen; - const struct ssh_hash *hash; -}; - -struct ssh_kexes { - int nkexes; - const struct ssh_kex *const *list; -}; - -struct ssh_signkey { - void *(*newkey) (char *data, int len); - void (*freekey) (void *key); - char *(*fmtkey) (void *key); - unsigned char *(*public_blob) (void *key, int *len); - unsigned char *(*private_blob) (void *key, int *len); - void *(*createkey) (unsigned char *pub_blob, int pub_len, - unsigned char *priv_blob, int priv_len); - void *(*openssh_createkey) (unsigned char **blob, int *len); - int (*openssh_fmtkey) (void *key, unsigned char *blob, int len); - int (*pubkey_bits) (void *blob, int len); - char *(*fingerprint) (void *key); - int (*verifysig) (void *key, char *sig, int siglen, - char *data, int datalen); - unsigned char *(*sign) (void *key, char *data, int datalen, - int *siglen); - char *name; - char *keytype; /* for host key cache */ -}; - -struct ssh_compress { - char *name; - void *(*compress_init) (void); - void (*compress_cleanup) (void *); - int (*compress) (void *, unsigned char *block, int len, - unsigned char **outblock, int *outlen); - void *(*decompress_init) (void); - void (*decompress_cleanup) (void *); - int (*decompress) (void *, unsigned char *block, int len, - unsigned char **outblock, int *outlen); - int (*disable_compression) (void *); - char *text_name; -}; - -struct ssh2_userkey { - const struct ssh_signkey *alg; /* the key algorithm */ - void *data; /* the key data */ - char *comment; /* the key comment */ -}; - -/* The maximum length of any hash algorithm used in kex. (bytes) */ -#define SSH2_KEX_MAX_HASH_LEN (32) /* SHA-256 */ - -extern const struct ssh_cipher ssh_3des; -extern const struct ssh_cipher ssh_des; -extern const struct ssh_cipher ssh_blowfish_ssh1; -extern const struct ssh2_ciphers ssh2_3des; -extern const struct ssh2_ciphers ssh2_des; -extern const struct ssh2_ciphers ssh2_aes; -extern const struct ssh2_ciphers ssh2_blowfish; -extern const struct ssh2_ciphers ssh2_arcfour; -extern const struct ssh_hash ssh_sha1; -extern const struct ssh_hash ssh_sha256; -extern const struct ssh_kexes ssh_diffiehellman_group1; -extern const struct ssh_kexes ssh_diffiehellman_group14; -extern const struct ssh_kexes ssh_diffiehellman_gex; -extern const struct ssh_kexes ssh_rsa_kex; -extern const struct ssh_signkey ssh_dss; -extern const struct ssh_signkey ssh_rsa; -extern const struct ssh_mac ssh_hmac_md5; -extern const struct ssh_mac ssh_hmac_sha1; -extern const struct ssh_mac ssh_hmac_sha1_buggy; -extern const struct ssh_mac ssh_hmac_sha1_96; -extern const struct ssh_mac ssh_hmac_sha1_96_buggy; - - -/* - * PuTTY version number formatted as an SSH version string. - */ -extern char sshver[]; - -/* - * Gross hack: pscp will try to start SFTP but fall back to scp1 if - * that fails. This variable is the means by which scp.c can reach - * into the SSH code and find out which one it got. - */ -extern int ssh_fallback_cmd(void *handle); - -#ifndef MSCRYPTOAPI -void SHATransform(word32 * digest, word32 * data); -#endif - -int random_byte(void); -void random_add_noise(void *noise, int length); -void random_add_heavynoise(void *noise, int length); - -void logevent(void *, const char *); - -/* Allocate and register a new channel for port forwarding */ -void *new_sock_channel(void *handle, Socket s); -void ssh_send_port_open(void *channel, char *hostname, int port, char *org); - -/* Exports from portfwd.c */ -extern const char *pfd_newconnect(Socket * s, char *hostname, int port, - void *c, const Config *cfg, - int addressfamily); -/* desthost == NULL indicates dynamic (SOCKS) port forwarding */ -extern const char *pfd_addforward(char *desthost, int destport, char *srcaddr, - int port, void *backhandle, - const Config *cfg, void **sockdata, - int address_family); -extern void pfd_close(Socket s); -extern void pfd_terminate(void *sockdata); -extern int pfd_send(Socket s, char *data, int len); -extern void pfd_confirm(Socket s); -extern void pfd_unthrottle(Socket s); -extern void pfd_override_throttle(Socket s, int enable); - -/* Exports from x11fwd.c */ -enum { - X11_TRANS_IPV4 = 0, X11_TRANS_IPV6 = 6, X11_TRANS_UNIX = 256 -}; -struct X11Display { - /* Broken-down components of the display name itself */ - int unixdomain; - char *hostname; - int displaynum; - int screennum; - /* OSX sometimes replaces all the above with a full Unix-socket pathname */ - char *unixsocketpath; - - /* PuTTY networking SockAddr to connect to the display, and associated - * gubbins */ - SockAddr addr; - int port; - char *realhost; - - /* Auth details we invented for the virtual display on the SSH server. */ - int remoteauthproto; - unsigned char *remoteauthdata; - int remoteauthdatalen; - char *remoteauthprotoname; - char *remoteauthdatastring; - - /* Our local auth details for talking to the real X display. */ - int localauthproto; - unsigned char *localauthdata; - int localauthdatalen; - - /* - * Used inside x11fwd.c to remember recently seen - * XDM-AUTHORIZATION-1 strings, to avoid replay attacks. - */ - tree234 *xdmseen; -}; -/* - * x11_setup_display() parses the display variable and fills in an - * X11Display structure. Some remote auth details are invented; - * the supplied authtype parameter configures the preferred - * authorisation protocol to use at the remote end. The local auth - * details are looked up by calling platform_get_x11_auth. - */ -extern struct X11Display *x11_setup_display(char *display, int authtype, - const Config *); -void x11_free_display(struct X11Display *disp); -extern const char *x11_init(Socket *, struct X11Display *, void *, - const char *, int, const Config *); -extern void x11_close(Socket); -extern int x11_send(Socket, char *, int); -extern void x11_unthrottle(Socket s); -extern void x11_override_throttle(Socket s, int enable); -char *x11_display(const char *display); -/* Platform-dependent X11 functions */ -extern void platform_get_x11_auth(struct X11Display *display, - const Config *); - /* examine a mostly-filled-in X11Display and fill in localauth* */ -extern const int platform_uses_x11_unix_by_default; - /* choose default X transport in the absence of a specified one */ -SockAddr platform_get_x11_unix_address(const char *path, int displaynum); - /* make up a SockAddr naming the address for displaynum */ -char *platform_get_x_display(void); - /* allocated local X display string, if any */ -/* Callbacks in x11.c usable _by_ platform X11 functions */ -/* - * This function does the job of platform_get_x11_auth, provided - * it is told where to find a normally formatted .Xauthority file: - * it opens that file, parses it to find an auth record which - * matches the display details in "display", and fills in the - * localauth fields. - * - * It is expected that most implementations of - * platform_get_x11_auth() will work by finding their system's - * .Xauthority file, adjusting the display details if necessary - * for local oddities like Unix-domain socket transport, and - * calling this function to do the rest of the work. - */ -void x11_get_auth_from_authfile(struct X11Display *display, - const char *authfilename); - -Bignum copybn(Bignum b); -Bignum bn_power_2(int n); -void bn_restore_invariant(Bignum b); -Bignum bignum_from_long(unsigned long n); -void freebn(Bignum b); -Bignum modpow(Bignum base, Bignum exp, Bignum mod); -Bignum modmul(Bignum a, Bignum b, Bignum mod); -void decbn(Bignum n); -extern Bignum Zero, One; -Bignum bignum_from_bytes(const unsigned char *data, int nbytes); -int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result); -int bignum_bitcount(Bignum bn); -int ssh1_bignum_length(Bignum bn); -int ssh2_bignum_length(Bignum bn); -int bignum_byte(Bignum bn, int i); -int bignum_bit(Bignum bn, int i); -void bignum_set_bit(Bignum bn, int i, int value); -int ssh1_write_bignum(void *data, Bignum bn); -Bignum biggcd(Bignum a, Bignum b); -unsigned short bignum_mod_short(Bignum number, unsigned short modulus); -Bignum bignum_add_long(Bignum number, unsigned long addend); -Bignum bigmul(Bignum a, Bignum b); -Bignum bigmuladd(Bignum a, Bignum b, Bignum addend); -Bignum bigdiv(Bignum a, Bignum b); -Bignum bigmod(Bignum a, Bignum b); -Bignum modinv(Bignum number, Bignum modulus); -Bignum bignum_bitmask(Bignum number); -Bignum bignum_rshift(Bignum number, int shift); -int bignum_cmp(Bignum a, Bignum b); -char *bignum_decimal(Bignum x); - -#ifdef DEBUG -void diagbn(char *prefix, Bignum md); -#endif - -void *dh_setup_group(const struct ssh_kex *kex); -void *dh_setup_gex(Bignum pval, Bignum gval); -void dh_cleanup(void *); -Bignum dh_create_e(void *, int nbits); -Bignum dh_find_K(void *, Bignum f); - -int loadrsakey(const Filename *filename, struct RSAKey *key, - char *passphrase, const char **errorstr); -int rsakey_encrypted(const Filename *filename, char **comment); -int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen, - char **commentptr, const char **errorstr); - -int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase); - -extern int base64_decode_atom(char *atom, unsigned char *out); -extern int base64_lines(int datalen); -extern void base64_encode_atom(unsigned char *data, int n, char *out); -extern void base64_encode(FILE *fp, unsigned char *data, int datalen, int cpl); - -/* ssh2_load_userkey can return this as an error */ -extern struct ssh2_userkey ssh2_wrong_passphrase; -#define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase) - -int ssh2_userkey_encrypted(const Filename *filename, char **comment); -struct ssh2_userkey *ssh2_load_userkey(const Filename *filename, - char *passphrase, const char **errorstr); -unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm, - int *pub_blob_len, char **commentptr, - const char **errorstr); -int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key, - char *passphrase); -const struct ssh_signkey *find_pubkey_alg(const char *name); - -enum { - SSH_KEYTYPE_UNOPENABLE, - SSH_KEYTYPE_UNKNOWN, - SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2, - SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM -}; -int key_type(const Filename *filename); -char *key_type_to_str(int type); - -int import_possible(int type); -int import_target_type(int type); -int import_encrypted(const Filename *filename, int type, char **comment); -int import_ssh1(const Filename *filename, int type, - struct RSAKey *key, char *passphrase, const char **errmsg_p); -struct ssh2_userkey *import_ssh2(const Filename *filename, int type, - char *passphrase, const char **errmsg_p); -int export_ssh1(const Filename *filename, int type, - struct RSAKey *key, char *passphrase); -int export_ssh2(const Filename *filename, int type, - struct ssh2_userkey *key, char *passphrase); - -void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len); -void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len); -void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, - unsigned char *blk, int len); -void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, - unsigned char *blk, int len); -void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk, - int len); -void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk, - int len); - -void des_encrypt_xdmauth(unsigned char *key, unsigned char *blk, int len); -void des_decrypt_xdmauth(unsigned char *key, unsigned char *blk, int len); - -/* - * For progress updates in the key generation utility. - */ -#define PROGFN_INITIALISE 1 -#define PROGFN_LIN_PHASE 2 -#define PROGFN_EXP_PHASE 3 -#define PROGFN_PHASE_EXTENT 4 -#define PROGFN_READY 5 -#define PROGFN_PROGRESS 6 -typedef void (*progfn_t) (void *param, int action, int phase, int progress); - -int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn, - void *pfnparam); -int dsa_generate(struct dss_key *key, int bits, progfn_t pfn, - void *pfnparam); -Bignum primegen(int bits, int modulus, int residue, Bignum factor, - int phase, progfn_t pfn, void *pfnparam); - - -/* - * zlib compression. - */ -void *zlib_compress_init(void); -void zlib_compress_cleanup(void *); -void *zlib_decompress_init(void); -void zlib_decompress_cleanup(void *); -int zlib_compress_block(void *, unsigned char *block, int len, - unsigned char **outblock, int *outlen); -int zlib_decompress_block(void *, unsigned char *block, int len, - unsigned char **outblock, int *outlen); - -/* - * SSH-1 agent messages. - */ -#define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1 -#define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2 -#define SSH1_AGENTC_RSA_CHALLENGE 3 -#define SSH1_AGENT_RSA_RESPONSE 4 -#define SSH1_AGENTC_ADD_RSA_IDENTITY 7 -#define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8 -#define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */ - -/* - * Messages common to SSH-1 and OpenSSH's SSH-2. - */ -#define SSH_AGENT_FAILURE 5 -#define SSH_AGENT_SUCCESS 6 - -/* - * OpenSSH's SSH-2 agent messages. - */ -#define SSH2_AGENTC_REQUEST_IDENTITIES 11 -#define SSH2_AGENT_IDENTITIES_ANSWER 12 -#define SSH2_AGENTC_SIGN_REQUEST 13 -#define SSH2_AGENT_SIGN_RESPONSE 14 -#define SSH2_AGENTC_ADD_IDENTITY 17 -#define SSH2_AGENTC_REMOVE_IDENTITY 18 -#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19 - -/* - * Need this to warn about support for the original SSH-2 keyfile - * format. - */ -void old_keyfile_warning(void); diff --git a/tools/plink/sshaes.c b/tools/plink/sshaes.c deleted file mode 100644 index 089e6c5d8..000000000 --- a/tools/plink/sshaes.c +++ /dev/null @@ -1,1234 +0,0 @@ -/* - * aes.c - implementation of AES / Rijndael - * - * AES is a flexible algorithm as regards endianness: it has no - * inherent preference as to which way round you should form words - * from the input byte stream. It talks endlessly of four-byte - * _vectors_, but never of 32-bit _words_ - there's no 32-bit - * addition at all, which would force an endianness by means of - * which way the carries went. So it would be possible to write a - * working AES that read words big-endian, and another working one - * that read them little-endian, just by computing a different set - * of tables - with no speed drop. - * - * It's therefore tempting to do just that, and remove the overhead - * of GET_32BIT_MSB_FIRST() et al, allowing every system to use its - * own endianness-native code; but I decided not to, partly for - * ease of testing, and mostly because I like the flexibility that - * allows you to encrypt a non-word-aligned block of memory (which - * many systems would stop being able to do if I went the - * endianness-dependent route). - * - * This implementation reads and stores words big-endian, but - * that's a minor implementation detail. By flipping the endianness - * of everything in the E0..E3, D0..D3 tables, and substituting - * GET_32BIT_LSB_FIRST for GET_32BIT_MSB_FIRST, I could create an - * implementation that worked internally little-endian and gave the - * same answers at the same speed. - */ - -#include -#include - -#include "ssh.h" - -#define MAX_NR 14 /* max no of rounds */ -#define MAX_NK 8 /* max no of words in input key */ -#define MAX_NB 8 /* max no of words in cipher blk */ - -#define mulby2(x) ( ((x&0x7F) << 1) ^ (x & 0x80 ? 0x1B : 0) ) - -typedef struct AESContext AESContext; - -struct AESContext { - word32 keysched[(MAX_NR + 1) * MAX_NB]; - word32 invkeysched[(MAX_NR + 1) * MAX_NB]; - void (*encrypt) (AESContext * ctx, word32 * block); - void (*decrypt) (AESContext * ctx, word32 * block); - word32 iv[MAX_NB]; - int Nb, Nr; -}; - -static const unsigned char Sbox[256] = { - 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, - 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, - 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, - 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, - 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, - 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, - 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, - 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, - 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, - 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, - 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, - 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, - 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, - 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, - 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, - 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, - 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, - 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, - 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, - 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, - 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, - 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, - 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, - 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, - 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, - 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, - 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, - 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, - 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, - 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, - 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, - 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 -}; - -static const unsigned char Sboxinv[256] = { - 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, - 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, - 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, - 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, - 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, - 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, - 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, - 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, - 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, - 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, - 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, - 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, - 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, - 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, - 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, - 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, - 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, - 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, - 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, - 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, - 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, - 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, - 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, - 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, - 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, - 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, - 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, - 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, - 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, - 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, - 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, - 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d -}; - -static const word32 E0[256] = { - 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, - 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554, - 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d, - 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, - 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87, - 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b, - 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, - 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b, - 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a, - 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, - 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108, - 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f, - 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, - 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5, - 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d, - 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, - 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e, - 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb, - 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, - 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497, - 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c, - 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, - 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b, - 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a, - 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, - 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594, - 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81, - 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, - 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a, - 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504, - 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, - 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d, - 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f, - 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, - 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47, - 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395, - 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, - 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883, - 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c, - 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, - 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e, - 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4, - 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, - 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b, - 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7, - 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, - 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25, - 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818, - 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, - 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651, - 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21, - 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85, - 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa, - 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12, - 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, - 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9, - 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133, - 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7, - 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920, - 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a, - 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17, - 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8, - 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11, - 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a, -}; -static const word32 E1[256] = { - 0xa5c66363, 0x84f87c7c, 0x99ee7777, 0x8df67b7b, - 0x0dfff2f2, 0xbdd66b6b, 0xb1de6f6f, 0x5491c5c5, - 0x50603030, 0x03020101, 0xa9ce6767, 0x7d562b2b, - 0x19e7fefe, 0x62b5d7d7, 0xe64dabab, 0x9aec7676, - 0x458fcaca, 0x9d1f8282, 0x4089c9c9, 0x87fa7d7d, - 0x15effafa, 0xebb25959, 0xc98e4747, 0x0bfbf0f0, - 0xec41adad, 0x67b3d4d4, 0xfd5fa2a2, 0xea45afaf, - 0xbf239c9c, 0xf753a4a4, 0x96e47272, 0x5b9bc0c0, - 0xc275b7b7, 0x1ce1fdfd, 0xae3d9393, 0x6a4c2626, - 0x5a6c3636, 0x417e3f3f, 0x02f5f7f7, 0x4f83cccc, - 0x5c683434, 0xf451a5a5, 0x34d1e5e5, 0x08f9f1f1, - 0x93e27171, 0x73abd8d8, 0x53623131, 0x3f2a1515, - 0x0c080404, 0x5295c7c7, 0x65462323, 0x5e9dc3c3, - 0x28301818, 0xa1379696, 0x0f0a0505, 0xb52f9a9a, - 0x090e0707, 0x36241212, 0x9b1b8080, 0x3ddfe2e2, - 0x26cdebeb, 0x694e2727, 0xcd7fb2b2, 0x9fea7575, - 0x1b120909, 0x9e1d8383, 0x74582c2c, 0x2e341a1a, - 0x2d361b1b, 0xb2dc6e6e, 0xeeb45a5a, 0xfb5ba0a0, - 0xf6a45252, 0x4d763b3b, 0x61b7d6d6, 0xce7db3b3, - 0x7b522929, 0x3edde3e3, 0x715e2f2f, 0x97138484, - 0xf5a65353, 0x68b9d1d1, 0x00000000, 0x2cc1eded, - 0x60402020, 0x1fe3fcfc, 0xc879b1b1, 0xedb65b5b, - 0xbed46a6a, 0x468dcbcb, 0xd967bebe, 0x4b723939, - 0xde944a4a, 0xd4984c4c, 0xe8b05858, 0x4a85cfcf, - 0x6bbbd0d0, 0x2ac5efef, 0xe54faaaa, 0x16edfbfb, - 0xc5864343, 0xd79a4d4d, 0x55663333, 0x94118585, - 0xcf8a4545, 0x10e9f9f9, 0x06040202, 0x81fe7f7f, - 0xf0a05050, 0x44783c3c, 0xba259f9f, 0xe34ba8a8, - 0xf3a25151, 0xfe5da3a3, 0xc0804040, 0x8a058f8f, - 0xad3f9292, 0xbc219d9d, 0x48703838, 0x04f1f5f5, - 0xdf63bcbc, 0xc177b6b6, 0x75afdada, 0x63422121, - 0x30201010, 0x1ae5ffff, 0x0efdf3f3, 0x6dbfd2d2, - 0x4c81cdcd, 0x14180c0c, 0x35261313, 0x2fc3ecec, - 0xe1be5f5f, 0xa2359797, 0xcc884444, 0x392e1717, - 0x5793c4c4, 0xf255a7a7, 0x82fc7e7e, 0x477a3d3d, - 0xacc86464, 0xe7ba5d5d, 0x2b321919, 0x95e67373, - 0xa0c06060, 0x98198181, 0xd19e4f4f, 0x7fa3dcdc, - 0x66442222, 0x7e542a2a, 0xab3b9090, 0x830b8888, - 0xca8c4646, 0x29c7eeee, 0xd36bb8b8, 0x3c281414, - 0x79a7dede, 0xe2bc5e5e, 0x1d160b0b, 0x76addbdb, - 0x3bdbe0e0, 0x56643232, 0x4e743a3a, 0x1e140a0a, - 0xdb924949, 0x0a0c0606, 0x6c482424, 0xe4b85c5c, - 0x5d9fc2c2, 0x6ebdd3d3, 0xef43acac, 0xa6c46262, - 0xa8399191, 0xa4319595, 0x37d3e4e4, 0x8bf27979, - 0x32d5e7e7, 0x438bc8c8, 0x596e3737, 0xb7da6d6d, - 0x8c018d8d, 0x64b1d5d5, 0xd29c4e4e, 0xe049a9a9, - 0xb4d86c6c, 0xfaac5656, 0x07f3f4f4, 0x25cfeaea, - 0xafca6565, 0x8ef47a7a, 0xe947aeae, 0x18100808, - 0xd56fbaba, 0x88f07878, 0x6f4a2525, 0x725c2e2e, - 0x24381c1c, 0xf157a6a6, 0xc773b4b4, 0x5197c6c6, - 0x23cbe8e8, 0x7ca1dddd, 0x9ce87474, 0x213e1f1f, - 0xdd964b4b, 0xdc61bdbd, 0x860d8b8b, 0x850f8a8a, - 0x90e07070, 0x427c3e3e, 0xc471b5b5, 0xaacc6666, - 0xd8904848, 0x05060303, 0x01f7f6f6, 0x121c0e0e, - 0xa3c26161, 0x5f6a3535, 0xf9ae5757, 0xd069b9b9, - 0x91178686, 0x5899c1c1, 0x273a1d1d, 0xb9279e9e, - 0x38d9e1e1, 0x13ebf8f8, 0xb32b9898, 0x33221111, - 0xbbd26969, 0x70a9d9d9, 0x89078e8e, 0xa7339494, - 0xb62d9b9b, 0x223c1e1e, 0x92158787, 0x20c9e9e9, - 0x4987cece, 0xffaa5555, 0x78502828, 0x7aa5dfdf, - 0x8f038c8c, 0xf859a1a1, 0x80098989, 0x171a0d0d, - 0xda65bfbf, 0x31d7e6e6, 0xc6844242, 0xb8d06868, - 0xc3824141, 0xb0299999, 0x775a2d2d, 0x111e0f0f, - 0xcb7bb0b0, 0xfca85454, 0xd66dbbbb, 0x3a2c1616, -}; -static const word32 E2[256] = { - 0x63a5c663, 0x7c84f87c, 0x7799ee77, 0x7b8df67b, - 0xf20dfff2, 0x6bbdd66b, 0x6fb1de6f, 0xc55491c5, - 0x30506030, 0x01030201, 0x67a9ce67, 0x2b7d562b, - 0xfe19e7fe, 0xd762b5d7, 0xabe64dab, 0x769aec76, - 0xca458fca, 0x829d1f82, 0xc94089c9, 0x7d87fa7d, - 0xfa15effa, 0x59ebb259, 0x47c98e47, 0xf00bfbf0, - 0xadec41ad, 0xd467b3d4, 0xa2fd5fa2, 0xafea45af, - 0x9cbf239c, 0xa4f753a4, 0x7296e472, 0xc05b9bc0, - 0xb7c275b7, 0xfd1ce1fd, 0x93ae3d93, 0x266a4c26, - 0x365a6c36, 0x3f417e3f, 0xf702f5f7, 0xcc4f83cc, - 0x345c6834, 0xa5f451a5, 0xe534d1e5, 0xf108f9f1, - 0x7193e271, 0xd873abd8, 0x31536231, 0x153f2a15, - 0x040c0804, 0xc75295c7, 0x23654623, 0xc35e9dc3, - 0x18283018, 0x96a13796, 0x050f0a05, 0x9ab52f9a, - 0x07090e07, 0x12362412, 0x809b1b80, 0xe23ddfe2, - 0xeb26cdeb, 0x27694e27, 0xb2cd7fb2, 0x759fea75, - 0x091b1209, 0x839e1d83, 0x2c74582c, 0x1a2e341a, - 0x1b2d361b, 0x6eb2dc6e, 0x5aeeb45a, 0xa0fb5ba0, - 0x52f6a452, 0x3b4d763b, 0xd661b7d6, 0xb3ce7db3, - 0x297b5229, 0xe33edde3, 0x2f715e2f, 0x84971384, - 0x53f5a653, 0xd168b9d1, 0x00000000, 0xed2cc1ed, - 0x20604020, 0xfc1fe3fc, 0xb1c879b1, 0x5bedb65b, - 0x6abed46a, 0xcb468dcb, 0xbed967be, 0x394b7239, - 0x4ade944a, 0x4cd4984c, 0x58e8b058, 0xcf4a85cf, - 0xd06bbbd0, 0xef2ac5ef, 0xaae54faa, 0xfb16edfb, - 0x43c58643, 0x4dd79a4d, 0x33556633, 0x85941185, - 0x45cf8a45, 0xf910e9f9, 0x02060402, 0x7f81fe7f, - 0x50f0a050, 0x3c44783c, 0x9fba259f, 0xa8e34ba8, - 0x51f3a251, 0xa3fe5da3, 0x40c08040, 0x8f8a058f, - 0x92ad3f92, 0x9dbc219d, 0x38487038, 0xf504f1f5, - 0xbcdf63bc, 0xb6c177b6, 0xda75afda, 0x21634221, - 0x10302010, 0xff1ae5ff, 0xf30efdf3, 0xd26dbfd2, - 0xcd4c81cd, 0x0c14180c, 0x13352613, 0xec2fc3ec, - 0x5fe1be5f, 0x97a23597, 0x44cc8844, 0x17392e17, - 0xc45793c4, 0xa7f255a7, 0x7e82fc7e, 0x3d477a3d, - 0x64acc864, 0x5de7ba5d, 0x192b3219, 0x7395e673, - 0x60a0c060, 0x81981981, 0x4fd19e4f, 0xdc7fa3dc, - 0x22664422, 0x2a7e542a, 0x90ab3b90, 0x88830b88, - 0x46ca8c46, 0xee29c7ee, 0xb8d36bb8, 0x143c2814, - 0xde79a7de, 0x5ee2bc5e, 0x0b1d160b, 0xdb76addb, - 0xe03bdbe0, 0x32566432, 0x3a4e743a, 0x0a1e140a, - 0x49db9249, 0x060a0c06, 0x246c4824, 0x5ce4b85c, - 0xc25d9fc2, 0xd36ebdd3, 0xacef43ac, 0x62a6c462, - 0x91a83991, 0x95a43195, 0xe437d3e4, 0x798bf279, - 0xe732d5e7, 0xc8438bc8, 0x37596e37, 0x6db7da6d, - 0x8d8c018d, 0xd564b1d5, 0x4ed29c4e, 0xa9e049a9, - 0x6cb4d86c, 0x56faac56, 0xf407f3f4, 0xea25cfea, - 0x65afca65, 0x7a8ef47a, 0xaee947ae, 0x08181008, - 0xbad56fba, 0x7888f078, 0x256f4a25, 0x2e725c2e, - 0x1c24381c, 0xa6f157a6, 0xb4c773b4, 0xc65197c6, - 0xe823cbe8, 0xdd7ca1dd, 0x749ce874, 0x1f213e1f, - 0x4bdd964b, 0xbddc61bd, 0x8b860d8b, 0x8a850f8a, - 0x7090e070, 0x3e427c3e, 0xb5c471b5, 0x66aacc66, - 0x48d89048, 0x03050603, 0xf601f7f6, 0x0e121c0e, - 0x61a3c261, 0x355f6a35, 0x57f9ae57, 0xb9d069b9, - 0x86911786, 0xc15899c1, 0x1d273a1d, 0x9eb9279e, - 0xe138d9e1, 0xf813ebf8, 0x98b32b98, 0x11332211, - 0x69bbd269, 0xd970a9d9, 0x8e89078e, 0x94a73394, - 0x9bb62d9b, 0x1e223c1e, 0x87921587, 0xe920c9e9, - 0xce4987ce, 0x55ffaa55, 0x28785028, 0xdf7aa5df, - 0x8c8f038c, 0xa1f859a1, 0x89800989, 0x0d171a0d, - 0xbfda65bf, 0xe631d7e6, 0x42c68442, 0x68b8d068, - 0x41c38241, 0x99b02999, 0x2d775a2d, 0x0f111e0f, - 0xb0cb7bb0, 0x54fca854, 0xbbd66dbb, 0x163a2c16, -}; -static const word32 E3[256] = { - 0x6363a5c6, 0x7c7c84f8, 0x777799ee, 0x7b7b8df6, - 0xf2f20dff, 0x6b6bbdd6, 0x6f6fb1de, 0xc5c55491, - 0x30305060, 0x01010302, 0x6767a9ce, 0x2b2b7d56, - 0xfefe19e7, 0xd7d762b5, 0xababe64d, 0x76769aec, - 0xcaca458f, 0x82829d1f, 0xc9c94089, 0x7d7d87fa, - 0xfafa15ef, 0x5959ebb2, 0x4747c98e, 0xf0f00bfb, - 0xadadec41, 0xd4d467b3, 0xa2a2fd5f, 0xafafea45, - 0x9c9cbf23, 0xa4a4f753, 0x727296e4, 0xc0c05b9b, - 0xb7b7c275, 0xfdfd1ce1, 0x9393ae3d, 0x26266a4c, - 0x36365a6c, 0x3f3f417e, 0xf7f702f5, 0xcccc4f83, - 0x34345c68, 0xa5a5f451, 0xe5e534d1, 0xf1f108f9, - 0x717193e2, 0xd8d873ab, 0x31315362, 0x15153f2a, - 0x04040c08, 0xc7c75295, 0x23236546, 0xc3c35e9d, - 0x18182830, 0x9696a137, 0x05050f0a, 0x9a9ab52f, - 0x0707090e, 0x12123624, 0x80809b1b, 0xe2e23ddf, - 0xebeb26cd, 0x2727694e, 0xb2b2cd7f, 0x75759fea, - 0x09091b12, 0x83839e1d, 0x2c2c7458, 0x1a1a2e34, - 0x1b1b2d36, 0x6e6eb2dc, 0x5a5aeeb4, 0xa0a0fb5b, - 0x5252f6a4, 0x3b3b4d76, 0xd6d661b7, 0xb3b3ce7d, - 0x29297b52, 0xe3e33edd, 0x2f2f715e, 0x84849713, - 0x5353f5a6, 0xd1d168b9, 0x00000000, 0xeded2cc1, - 0x20206040, 0xfcfc1fe3, 0xb1b1c879, 0x5b5bedb6, - 0x6a6abed4, 0xcbcb468d, 0xbebed967, 0x39394b72, - 0x4a4ade94, 0x4c4cd498, 0x5858e8b0, 0xcfcf4a85, - 0xd0d06bbb, 0xefef2ac5, 0xaaaae54f, 0xfbfb16ed, - 0x4343c586, 0x4d4dd79a, 0x33335566, 0x85859411, - 0x4545cf8a, 0xf9f910e9, 0x02020604, 0x7f7f81fe, - 0x5050f0a0, 0x3c3c4478, 0x9f9fba25, 0xa8a8e34b, - 0x5151f3a2, 0xa3a3fe5d, 0x4040c080, 0x8f8f8a05, - 0x9292ad3f, 0x9d9dbc21, 0x38384870, 0xf5f504f1, - 0xbcbcdf63, 0xb6b6c177, 0xdada75af, 0x21216342, - 0x10103020, 0xffff1ae5, 0xf3f30efd, 0xd2d26dbf, - 0xcdcd4c81, 0x0c0c1418, 0x13133526, 0xecec2fc3, - 0x5f5fe1be, 0x9797a235, 0x4444cc88, 0x1717392e, - 0xc4c45793, 0xa7a7f255, 0x7e7e82fc, 0x3d3d477a, - 0x6464acc8, 0x5d5de7ba, 0x19192b32, 0x737395e6, - 0x6060a0c0, 0x81819819, 0x4f4fd19e, 0xdcdc7fa3, - 0x22226644, 0x2a2a7e54, 0x9090ab3b, 0x8888830b, - 0x4646ca8c, 0xeeee29c7, 0xb8b8d36b, 0x14143c28, - 0xdede79a7, 0x5e5ee2bc, 0x0b0b1d16, 0xdbdb76ad, - 0xe0e03bdb, 0x32325664, 0x3a3a4e74, 0x0a0a1e14, - 0x4949db92, 0x06060a0c, 0x24246c48, 0x5c5ce4b8, - 0xc2c25d9f, 0xd3d36ebd, 0xacacef43, 0x6262a6c4, - 0x9191a839, 0x9595a431, 0xe4e437d3, 0x79798bf2, - 0xe7e732d5, 0xc8c8438b, 0x3737596e, 0x6d6db7da, - 0x8d8d8c01, 0xd5d564b1, 0x4e4ed29c, 0xa9a9e049, - 0x6c6cb4d8, 0x5656faac, 0xf4f407f3, 0xeaea25cf, - 0x6565afca, 0x7a7a8ef4, 0xaeaee947, 0x08081810, - 0xbabad56f, 0x787888f0, 0x25256f4a, 0x2e2e725c, - 0x1c1c2438, 0xa6a6f157, 0xb4b4c773, 0xc6c65197, - 0xe8e823cb, 0xdddd7ca1, 0x74749ce8, 0x1f1f213e, - 0x4b4bdd96, 0xbdbddc61, 0x8b8b860d, 0x8a8a850f, - 0x707090e0, 0x3e3e427c, 0xb5b5c471, 0x6666aacc, - 0x4848d890, 0x03030506, 0xf6f601f7, 0x0e0e121c, - 0x6161a3c2, 0x35355f6a, 0x5757f9ae, 0xb9b9d069, - 0x86869117, 0xc1c15899, 0x1d1d273a, 0x9e9eb927, - 0xe1e138d9, 0xf8f813eb, 0x9898b32b, 0x11113322, - 0x6969bbd2, 0xd9d970a9, 0x8e8e8907, 0x9494a733, - 0x9b9bb62d, 0x1e1e223c, 0x87879215, 0xe9e920c9, - 0xcece4987, 0x5555ffaa, 0x28287850, 0xdfdf7aa5, - 0x8c8c8f03, 0xa1a1f859, 0x89898009, 0x0d0d171a, - 0xbfbfda65, 0xe6e631d7, 0x4242c684, 0x6868b8d0, - 0x4141c382, 0x9999b029, 0x2d2d775a, 0x0f0f111e, - 0xb0b0cb7b, 0x5454fca8, 0xbbbbd66d, 0x16163a2c, -}; -static const word32 D0[256] = { - 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, - 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393, - 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25, - 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, - 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1, - 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6, - 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, - 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844, - 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd, - 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, - 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45, - 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94, - 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, - 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a, - 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5, - 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c, - 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1, - 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a, - 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75, - 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051, - 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46, - 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff, - 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77, - 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb, - 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000, - 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e, - 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927, - 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, - 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e, - 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16, - 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, - 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8, - 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd, - 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, - 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163, - 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120, - 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, - 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0, - 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422, - 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, - 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36, - 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4, - 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, - 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5, - 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3, - 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, - 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8, - 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6, - 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, - 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0, - 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815, - 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, - 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df, - 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f, - 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e, - 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713, - 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89, - 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, - 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf, - 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86, - 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, - 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541, - 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190, - 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742, -}; -static const word32 D1[256] = { - 0x5051f4a7, 0x537e4165, 0xc31a17a4, 0x963a275e, - 0xcb3bab6b, 0xf11f9d45, 0xabacfa58, 0x934be303, - 0x552030fa, 0xf6ad766d, 0x9188cc76, 0x25f5024c, - 0xfc4fe5d7, 0xd7c52acb, 0x80263544, 0x8fb562a3, - 0x49deb15a, 0x6725ba1b, 0x9845ea0e, 0xe15dfec0, - 0x02c32f75, 0x12814cf0, 0xa38d4697, 0xc66bd3f9, - 0xe7038f5f, 0x9515929c, 0xebbf6d7a, 0xda955259, - 0x2dd4be83, 0xd3587421, 0x2949e069, 0x448ec9c8, - 0x6a75c289, 0x78f48e79, 0x6b99583e, 0xdd27b971, - 0xb6bee14f, 0x17f088ad, 0x66c920ac, 0xb47dce3a, - 0x1863df4a, 0x82e51a31, 0x60975133, 0x4562537f, - 0xe0b16477, 0x84bb6bae, 0x1cfe81a0, 0x94f9082b, - 0x58704868, 0x198f45fd, 0x8794de6c, 0xb7527bf8, - 0x23ab73d3, 0xe2724b02, 0x57e31f8f, 0x2a6655ab, - 0x07b2eb28, 0x032fb5c2, 0x9a86c57b, 0xa5d33708, - 0xf2302887, 0xb223bfa5, 0xba02036a, 0x5ced1682, - 0x2b8acf1c, 0x92a779b4, 0xf0f307f2, 0xa14e69e2, - 0xcd65daf4, 0xd50605be, 0x1fd13462, 0x8ac4a6fe, - 0x9d342e53, 0xa0a2f355, 0x32058ae1, 0x75a4f6eb, - 0x390b83ec, 0xaa4060ef, 0x065e719f, 0x51bd6e10, - 0xf93e218a, 0x3d96dd06, 0xaedd3e05, 0x464de6bd, - 0xb591548d, 0x0571c45d, 0x6f0406d4, 0xff605015, - 0x241998fb, 0x97d6bde9, 0xcc894043, 0x7767d99e, - 0xbdb0e842, 0x8807898b, 0x38e7195b, 0xdb79c8ee, - 0x47a17c0a, 0xe97c420f, 0xc9f8841e, 0x00000000, - 0x83098086, 0x48322bed, 0xac1e1170, 0x4e6c5a72, - 0xfbfd0eff, 0x560f8538, 0x1e3daed5, 0x27362d39, - 0x640a0fd9, 0x21685ca6, 0xd19b5b54, 0x3a24362e, - 0xb10c0a67, 0x0f9357e7, 0xd2b4ee96, 0x9e1b9b91, - 0x4f80c0c5, 0xa261dc20, 0x695a774b, 0x161c121a, - 0x0ae293ba, 0xe5c0a02a, 0x433c22e0, 0x1d121b17, - 0x0b0e090d, 0xadf28bc7, 0xb92db6a8, 0xc8141ea9, - 0x8557f119, 0x4caf7507, 0xbbee99dd, 0xfda37f60, - 0x9ff70126, 0xbc5c72f5, 0xc544663b, 0x345bfb7e, - 0x768b4329, 0xdccb23c6, 0x68b6edfc, 0x63b8e4f1, - 0xcad731dc, 0x10426385, 0x40139722, 0x2084c611, - 0x7d854a24, 0xf8d2bb3d, 0x11aef932, 0x6dc729a1, - 0x4b1d9e2f, 0xf3dcb230, 0xec0d8652, 0xd077c1e3, - 0x6c2bb316, 0x99a970b9, 0xfa119448, 0x2247e964, - 0xc4a8fc8c, 0x1aa0f03f, 0xd8567d2c, 0xef223390, - 0xc787494e, 0xc1d938d1, 0xfe8ccaa2, 0x3698d40b, - 0xcfa6f581, 0x28a57ade, 0x26dab78e, 0xa43fadbf, - 0xe42c3a9d, 0x0d507892, 0x9b6a5fcc, 0x62547e46, - 0xc2f68d13, 0xe890d8b8, 0x5e2e39f7, 0xf582c3af, - 0xbe9f5d80, 0x7c69d093, 0xa96fd52d, 0xb3cf2512, - 0x3bc8ac99, 0xa710187d, 0x6ee89c63, 0x7bdb3bbb, - 0x09cd2678, 0xf46e5918, 0x01ec9ab7, 0xa8834f9a, - 0x65e6956e, 0x7eaaffe6, 0x0821bccf, 0xe6ef15e8, - 0xd9bae79b, 0xce4a6f36, 0xd4ea9f09, 0xd629b07c, - 0xaf31a4b2, 0x312a3f23, 0x30c6a594, 0xc035a266, - 0x37744ebc, 0xa6fc82ca, 0xb0e090d0, 0x1533a7d8, - 0x4af10498, 0xf741ecda, 0x0e7fcd50, 0x2f1791f6, - 0x8d764dd6, 0x4d43efb0, 0x54ccaa4d, 0xdfe49604, - 0xe39ed1b5, 0x1b4c6a88, 0xb8c12c1f, 0x7f466551, - 0x049d5eea, 0x5d018c35, 0x73fa8774, 0x2efb0b41, - 0x5ab3671d, 0x5292dbd2, 0x33e91056, 0x136dd647, - 0x8c9ad761, 0x7a37a10c, 0x8e59f814, 0x89eb133c, - 0xeecea927, 0x35b761c9, 0xede11ce5, 0x3c7a47b1, - 0x599cd2df, 0x3f55f273, 0x791814ce, 0xbf73c737, - 0xea53f7cd, 0x5b5ffdaa, 0x14df3d6f, 0x867844db, - 0x81caaff3, 0x3eb968c4, 0x2c382434, 0x5fc2a340, - 0x72161dc3, 0x0cbce225, 0x8b283c49, 0x41ff0d95, - 0x7139a801, 0xde080cb3, 0x9cd8b4e4, 0x906456c1, - 0x617bcb84, 0x70d532b6, 0x74486c5c, 0x42d0b857, -}; -static const word32 D2[256] = { - 0xa75051f4, 0x65537e41, 0xa4c31a17, 0x5e963a27, - 0x6bcb3bab, 0x45f11f9d, 0x58abacfa, 0x03934be3, - 0xfa552030, 0x6df6ad76, 0x769188cc, 0x4c25f502, - 0xd7fc4fe5, 0xcbd7c52a, 0x44802635, 0xa38fb562, - 0x5a49deb1, 0x1b6725ba, 0x0e9845ea, 0xc0e15dfe, - 0x7502c32f, 0xf012814c, 0x97a38d46, 0xf9c66bd3, - 0x5fe7038f, 0x9c951592, 0x7aebbf6d, 0x59da9552, - 0x832dd4be, 0x21d35874, 0x692949e0, 0xc8448ec9, - 0x896a75c2, 0x7978f48e, 0x3e6b9958, 0x71dd27b9, - 0x4fb6bee1, 0xad17f088, 0xac66c920, 0x3ab47dce, - 0x4a1863df, 0x3182e51a, 0x33609751, 0x7f456253, - 0x77e0b164, 0xae84bb6b, 0xa01cfe81, 0x2b94f908, - 0x68587048, 0xfd198f45, 0x6c8794de, 0xf8b7527b, - 0xd323ab73, 0x02e2724b, 0x8f57e31f, 0xab2a6655, - 0x2807b2eb, 0xc2032fb5, 0x7b9a86c5, 0x08a5d337, - 0x87f23028, 0xa5b223bf, 0x6aba0203, 0x825ced16, - 0x1c2b8acf, 0xb492a779, 0xf2f0f307, 0xe2a14e69, - 0xf4cd65da, 0xbed50605, 0x621fd134, 0xfe8ac4a6, - 0x539d342e, 0x55a0a2f3, 0xe132058a, 0xeb75a4f6, - 0xec390b83, 0xefaa4060, 0x9f065e71, 0x1051bd6e, - 0x8af93e21, 0x063d96dd, 0x05aedd3e, 0xbd464de6, - 0x8db59154, 0x5d0571c4, 0xd46f0406, 0x15ff6050, - 0xfb241998, 0xe997d6bd, 0x43cc8940, 0x9e7767d9, - 0x42bdb0e8, 0x8b880789, 0x5b38e719, 0xeedb79c8, - 0x0a47a17c, 0x0fe97c42, 0x1ec9f884, 0x00000000, - 0x86830980, 0xed48322b, 0x70ac1e11, 0x724e6c5a, - 0xfffbfd0e, 0x38560f85, 0xd51e3dae, 0x3927362d, - 0xd9640a0f, 0xa621685c, 0x54d19b5b, 0x2e3a2436, - 0x67b10c0a, 0xe70f9357, 0x96d2b4ee, 0x919e1b9b, - 0xc54f80c0, 0x20a261dc, 0x4b695a77, 0x1a161c12, - 0xba0ae293, 0x2ae5c0a0, 0xe0433c22, 0x171d121b, - 0x0d0b0e09, 0xc7adf28b, 0xa8b92db6, 0xa9c8141e, - 0x198557f1, 0x074caf75, 0xddbbee99, 0x60fda37f, - 0x269ff701, 0xf5bc5c72, 0x3bc54466, 0x7e345bfb, - 0x29768b43, 0xc6dccb23, 0xfc68b6ed, 0xf163b8e4, - 0xdccad731, 0x85104263, 0x22401397, 0x112084c6, - 0x247d854a, 0x3df8d2bb, 0x3211aef9, 0xa16dc729, - 0x2f4b1d9e, 0x30f3dcb2, 0x52ec0d86, 0xe3d077c1, - 0x166c2bb3, 0xb999a970, 0x48fa1194, 0x642247e9, - 0x8cc4a8fc, 0x3f1aa0f0, 0x2cd8567d, 0x90ef2233, - 0x4ec78749, 0xd1c1d938, 0xa2fe8cca, 0x0b3698d4, - 0x81cfa6f5, 0xde28a57a, 0x8e26dab7, 0xbfa43fad, - 0x9de42c3a, 0x920d5078, 0xcc9b6a5f, 0x4662547e, - 0x13c2f68d, 0xb8e890d8, 0xf75e2e39, 0xaff582c3, - 0x80be9f5d, 0x937c69d0, 0x2da96fd5, 0x12b3cf25, - 0x993bc8ac, 0x7da71018, 0x636ee89c, 0xbb7bdb3b, - 0x7809cd26, 0x18f46e59, 0xb701ec9a, 0x9aa8834f, - 0x6e65e695, 0xe67eaaff, 0xcf0821bc, 0xe8e6ef15, - 0x9bd9bae7, 0x36ce4a6f, 0x09d4ea9f, 0x7cd629b0, - 0xb2af31a4, 0x23312a3f, 0x9430c6a5, 0x66c035a2, - 0xbc37744e, 0xcaa6fc82, 0xd0b0e090, 0xd81533a7, - 0x984af104, 0xdaf741ec, 0x500e7fcd, 0xf62f1791, - 0xd68d764d, 0xb04d43ef, 0x4d54ccaa, 0x04dfe496, - 0xb5e39ed1, 0x881b4c6a, 0x1fb8c12c, 0x517f4665, - 0xea049d5e, 0x355d018c, 0x7473fa87, 0x412efb0b, - 0x1d5ab367, 0xd25292db, 0x5633e910, 0x47136dd6, - 0x618c9ad7, 0x0c7a37a1, 0x148e59f8, 0x3c89eb13, - 0x27eecea9, 0xc935b761, 0xe5ede11c, 0xb13c7a47, - 0xdf599cd2, 0x733f55f2, 0xce791814, 0x37bf73c7, - 0xcdea53f7, 0xaa5b5ffd, 0x6f14df3d, 0xdb867844, - 0xf381caaf, 0xc43eb968, 0x342c3824, 0x405fc2a3, - 0xc372161d, 0x250cbce2, 0x498b283c, 0x9541ff0d, - 0x017139a8, 0xb3de080c, 0xe49cd8b4, 0xc1906456, - 0x84617bcb, 0xb670d532, 0x5c74486c, 0x5742d0b8, -}; -static const word32 D3[256] = { - 0xf4a75051, 0x4165537e, 0x17a4c31a, 0x275e963a, - 0xab6bcb3b, 0x9d45f11f, 0xfa58abac, 0xe303934b, - 0x30fa5520, 0x766df6ad, 0xcc769188, 0x024c25f5, - 0xe5d7fc4f, 0x2acbd7c5, 0x35448026, 0x62a38fb5, - 0xb15a49de, 0xba1b6725, 0xea0e9845, 0xfec0e15d, - 0x2f7502c3, 0x4cf01281, 0x4697a38d, 0xd3f9c66b, - 0x8f5fe703, 0x929c9515, 0x6d7aebbf, 0x5259da95, - 0xbe832dd4, 0x7421d358, 0xe0692949, 0xc9c8448e, - 0xc2896a75, 0x8e7978f4, 0x583e6b99, 0xb971dd27, - 0xe14fb6be, 0x88ad17f0, 0x20ac66c9, 0xce3ab47d, - 0xdf4a1863, 0x1a3182e5, 0x51336097, 0x537f4562, - 0x6477e0b1, 0x6bae84bb, 0x81a01cfe, 0x082b94f9, - 0x48685870, 0x45fd198f, 0xde6c8794, 0x7bf8b752, - 0x73d323ab, 0x4b02e272, 0x1f8f57e3, 0x55ab2a66, - 0xeb2807b2, 0xb5c2032f, 0xc57b9a86, 0x3708a5d3, - 0x2887f230, 0xbfa5b223, 0x036aba02, 0x16825ced, - 0xcf1c2b8a, 0x79b492a7, 0x07f2f0f3, 0x69e2a14e, - 0xdaf4cd65, 0x05bed506, 0x34621fd1, 0xa6fe8ac4, - 0x2e539d34, 0xf355a0a2, 0x8ae13205, 0xf6eb75a4, - 0x83ec390b, 0x60efaa40, 0x719f065e, 0x6e1051bd, - 0x218af93e, 0xdd063d96, 0x3e05aedd, 0xe6bd464d, - 0x548db591, 0xc45d0571, 0x06d46f04, 0x5015ff60, - 0x98fb2419, 0xbde997d6, 0x4043cc89, 0xd99e7767, - 0xe842bdb0, 0x898b8807, 0x195b38e7, 0xc8eedb79, - 0x7c0a47a1, 0x420fe97c, 0x841ec9f8, 0x00000000, - 0x80868309, 0x2bed4832, 0x1170ac1e, 0x5a724e6c, - 0x0efffbfd, 0x8538560f, 0xaed51e3d, 0x2d392736, - 0x0fd9640a, 0x5ca62168, 0x5b54d19b, 0x362e3a24, - 0x0a67b10c, 0x57e70f93, 0xee96d2b4, 0x9b919e1b, - 0xc0c54f80, 0xdc20a261, 0x774b695a, 0x121a161c, - 0x93ba0ae2, 0xa02ae5c0, 0x22e0433c, 0x1b171d12, - 0x090d0b0e, 0x8bc7adf2, 0xb6a8b92d, 0x1ea9c814, - 0xf1198557, 0x75074caf, 0x99ddbbee, 0x7f60fda3, - 0x01269ff7, 0x72f5bc5c, 0x663bc544, 0xfb7e345b, - 0x4329768b, 0x23c6dccb, 0xedfc68b6, 0xe4f163b8, - 0x31dccad7, 0x63851042, 0x97224013, 0xc6112084, - 0x4a247d85, 0xbb3df8d2, 0xf93211ae, 0x29a16dc7, - 0x9e2f4b1d, 0xb230f3dc, 0x8652ec0d, 0xc1e3d077, - 0xb3166c2b, 0x70b999a9, 0x9448fa11, 0xe9642247, - 0xfc8cc4a8, 0xf03f1aa0, 0x7d2cd856, 0x3390ef22, - 0x494ec787, 0x38d1c1d9, 0xcaa2fe8c, 0xd40b3698, - 0xf581cfa6, 0x7ade28a5, 0xb78e26da, 0xadbfa43f, - 0x3a9de42c, 0x78920d50, 0x5fcc9b6a, 0x7e466254, - 0x8d13c2f6, 0xd8b8e890, 0x39f75e2e, 0xc3aff582, - 0x5d80be9f, 0xd0937c69, 0xd52da96f, 0x2512b3cf, - 0xac993bc8, 0x187da710, 0x9c636ee8, 0x3bbb7bdb, - 0x267809cd, 0x5918f46e, 0x9ab701ec, 0x4f9aa883, - 0x956e65e6, 0xffe67eaa, 0xbccf0821, 0x15e8e6ef, - 0xe79bd9ba, 0x6f36ce4a, 0x9f09d4ea, 0xb07cd629, - 0xa4b2af31, 0x3f23312a, 0xa59430c6, 0xa266c035, - 0x4ebc3774, 0x82caa6fc, 0x90d0b0e0, 0xa7d81533, - 0x04984af1, 0xecdaf741, 0xcd500e7f, 0x91f62f17, - 0x4dd68d76, 0xefb04d43, 0xaa4d54cc, 0x9604dfe4, - 0xd1b5e39e, 0x6a881b4c, 0x2c1fb8c1, 0x65517f46, - 0x5eea049d, 0x8c355d01, 0x877473fa, 0x0b412efb, - 0x671d5ab3, 0xdbd25292, 0x105633e9, 0xd647136d, - 0xd7618c9a, 0xa10c7a37, 0xf8148e59, 0x133c89eb, - 0xa927eece, 0x61c935b7, 0x1ce5ede1, 0x47b13c7a, - 0xd2df599c, 0xf2733f55, 0x14ce7918, 0xc737bf73, - 0xf7cdea53, 0xfdaa5b5f, 0x3d6f14df, 0x44db8678, - 0xaff381ca, 0x68c43eb9, 0x24342c38, 0xa3405fc2, - 0x1dc37216, 0xe2250cbc, 0x3c498b28, 0x0d9541ff, - 0xa8017139, 0x0cb3de08, 0xb4e49cd8, 0x56c19064, - 0xcb84617b, 0x32b670d5, 0x6c5c7448, 0xb85742d0, -}; - -/* - * Common macros in both the encryption and decryption routines. - */ -#define ADD_ROUND_KEY_4 (block[0]^=*keysched++, block[1]^=*keysched++, \ - block[2]^=*keysched++, block[3]^=*keysched++) -#define ADD_ROUND_KEY_6 (block[0]^=*keysched++, block[1]^=*keysched++, \ - block[2]^=*keysched++, block[3]^=*keysched++, \ - block[4]^=*keysched++, block[5]^=*keysched++) -#define ADD_ROUND_KEY_8 (block[0]^=*keysched++, block[1]^=*keysched++, \ - block[2]^=*keysched++, block[3]^=*keysched++, \ - block[4]^=*keysched++, block[5]^=*keysched++, \ - block[6]^=*keysched++, block[7]^=*keysched++) -#define MOVEWORD(i) ( block[i] = newstate[i] ) - -/* - * Macros for the encryption routine. There are three encryption - * cores, for Nb=4,6,8. - */ -#define MAKEWORD(i) ( newstate[i] = (E0[(block[i] >> 24) & 0xFF] ^ \ - E1[(block[(i+C1)%Nb] >> 16) & 0xFF] ^ \ - E2[(block[(i+C2)%Nb] >> 8) & 0xFF] ^ \ - E3[block[(i+C3)%Nb] & 0xFF]) ) -#define LASTWORD(i) ( newstate[i] = (Sbox[(block[i] >> 24) & 0xFF] << 24) | \ - (Sbox[(block[(i+C1)%Nb] >> 16) & 0xFF] << 16) | \ - (Sbox[(block[(i+C2)%Nb] >> 8) & 0xFF] << 8) | \ - (Sbox[(block[(i+C3)%Nb] ) & 0xFF] ) ) - -/* - * Core encrypt routines, expecting word32 inputs read big-endian - * from the byte-oriented input stream. - */ -static void aes_encrypt_nb_4(AESContext * ctx, word32 * block) -{ - int i; - static const int C1 = 1, C2 = 2, C3 = 3, Nb = 4; - word32 *keysched = ctx->keysched; - word32 newstate[4]; - for (i = 0; i < ctx->Nr - 1; i++) { - ADD_ROUND_KEY_4; - MAKEWORD(0); - MAKEWORD(1); - MAKEWORD(2); - MAKEWORD(3); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - } - ADD_ROUND_KEY_4; - LASTWORD(0); - LASTWORD(1); - LASTWORD(2); - LASTWORD(3); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - ADD_ROUND_KEY_4; -} -static void aes_encrypt_nb_6(AESContext * ctx, word32 * block) -{ - int i; - static const int C1 = 1, C2 = 2, C3 = 3, Nb = 6; - word32 *keysched = ctx->keysched; - word32 newstate[6]; - for (i = 0; i < ctx->Nr - 1; i++) { - ADD_ROUND_KEY_6; - MAKEWORD(0); - MAKEWORD(1); - MAKEWORD(2); - MAKEWORD(3); - MAKEWORD(4); - MAKEWORD(5); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - MOVEWORD(4); - MOVEWORD(5); - } - ADD_ROUND_KEY_6; - LASTWORD(0); - LASTWORD(1); - LASTWORD(2); - LASTWORD(3); - LASTWORD(4); - LASTWORD(5); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - MOVEWORD(4); - MOVEWORD(5); - ADD_ROUND_KEY_6; -} -static void aes_encrypt_nb_8(AESContext * ctx, word32 * block) -{ - int i; - static const int C1 = 1, C2 = 3, C3 = 4, Nb = 8; - word32 *keysched = ctx->keysched; - word32 newstate[8]; - for (i = 0; i < ctx->Nr - 1; i++) { - ADD_ROUND_KEY_8; - MAKEWORD(0); - MAKEWORD(1); - MAKEWORD(2); - MAKEWORD(3); - MAKEWORD(4); - MAKEWORD(5); - MAKEWORD(6); - MAKEWORD(7); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - MOVEWORD(4); - MOVEWORD(5); - MOVEWORD(6); - MOVEWORD(7); - } - ADD_ROUND_KEY_8; - LASTWORD(0); - LASTWORD(1); - LASTWORD(2); - LASTWORD(3); - LASTWORD(4); - LASTWORD(5); - LASTWORD(6); - LASTWORD(7); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - MOVEWORD(4); - MOVEWORD(5); - MOVEWORD(6); - MOVEWORD(7); - ADD_ROUND_KEY_8; -} - -#undef MAKEWORD -#undef LASTWORD - -/* - * Macros for the decryption routine. There are three decryption - * cores, for Nb=4,6,8. - */ -#define MAKEWORD(i) ( newstate[i] = (D0[(block[i] >> 24) & 0xFF] ^ \ - D1[(block[(i+C1)%Nb] >> 16) & 0xFF] ^ \ - D2[(block[(i+C2)%Nb] >> 8) & 0xFF] ^ \ - D3[block[(i+C3)%Nb] & 0xFF]) ) -#define LASTWORD(i) (newstate[i] = (Sboxinv[(block[i] >> 24) & 0xFF] << 24) | \ - (Sboxinv[(block[(i+C1)%Nb] >> 16) & 0xFF] << 16) | \ - (Sboxinv[(block[(i+C2)%Nb] >> 8) & 0xFF] << 8) | \ - (Sboxinv[(block[(i+C3)%Nb] ) & 0xFF] ) ) - -/* - * Core decrypt routines, expecting word32 inputs read big-endian - * from the byte-oriented input stream. - */ -static void aes_decrypt_nb_4(AESContext * ctx, word32 * block) -{ - int i; - static const int C1 = 4 - 1, C2 = 4 - 2, C3 = 4 - 3, Nb = 4; - word32 *keysched = ctx->invkeysched; - word32 newstate[4]; - for (i = 0; i < ctx->Nr - 1; i++) { - ADD_ROUND_KEY_4; - MAKEWORD(0); - MAKEWORD(1); - MAKEWORD(2); - MAKEWORD(3); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - } - ADD_ROUND_KEY_4; - LASTWORD(0); - LASTWORD(1); - LASTWORD(2); - LASTWORD(3); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - ADD_ROUND_KEY_4; -} -static void aes_decrypt_nb_6(AESContext * ctx, word32 * block) -{ - int i; - static const int C1 = 6 - 1, C2 = 6 - 2, C3 = 6 - 3, Nb = 6; - word32 *keysched = ctx->invkeysched; - word32 newstate[6]; - for (i = 0; i < ctx->Nr - 1; i++) { - ADD_ROUND_KEY_6; - MAKEWORD(0); - MAKEWORD(1); - MAKEWORD(2); - MAKEWORD(3); - MAKEWORD(4); - MAKEWORD(5); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - MOVEWORD(4); - MOVEWORD(5); - } - ADD_ROUND_KEY_6; - LASTWORD(0); - LASTWORD(1); - LASTWORD(2); - LASTWORD(3); - LASTWORD(4); - LASTWORD(5); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - MOVEWORD(4); - MOVEWORD(5); - ADD_ROUND_KEY_6; -} -static void aes_decrypt_nb_8(AESContext * ctx, word32 * block) -{ - int i; - static const int C1 = 8 - 1, C2 = 8 - 3, C3 = 8 - 4, Nb = 8; - word32 *keysched = ctx->invkeysched; - word32 newstate[8]; - for (i = 0; i < ctx->Nr - 1; i++) { - ADD_ROUND_KEY_8; - MAKEWORD(0); - MAKEWORD(1); - MAKEWORD(2); - MAKEWORD(3); - MAKEWORD(4); - MAKEWORD(5); - MAKEWORD(6); - MAKEWORD(7); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - MOVEWORD(4); - MOVEWORD(5); - MOVEWORD(6); - MOVEWORD(7); - } - ADD_ROUND_KEY_8; - LASTWORD(0); - LASTWORD(1); - LASTWORD(2); - LASTWORD(3); - LASTWORD(4); - LASTWORD(5); - LASTWORD(6); - LASTWORD(7); - MOVEWORD(0); - MOVEWORD(1); - MOVEWORD(2); - MOVEWORD(3); - MOVEWORD(4); - MOVEWORD(5); - MOVEWORD(6); - MOVEWORD(7); - ADD_ROUND_KEY_8; -} - -#undef MAKEWORD -#undef LASTWORD - - -/* - * Set up an AESContext. `keylen' and `blocklen' are measured in - * bytes; each can be either 16 (128-bit), 24 (192-bit), or 32 - * (256-bit). - */ -static void aes_setup(AESContext * ctx, int blocklen, - unsigned char *key, int keylen) -{ - int i, j, Nk, rconst; - - assert(blocklen == 16 || blocklen == 24 || blocklen == 32); - assert(keylen == 16 || keylen == 24 || keylen == 32); - - /* - * Basic parameters. Words per block, words in key, rounds. - */ - Nk = keylen / 4; - ctx->Nb = blocklen / 4; - ctx->Nr = 6 + (ctx->Nb > Nk ? ctx->Nb : Nk); - - /* - * Assign core-function pointers. - */ - if (ctx->Nb == 8) - ctx->encrypt = aes_encrypt_nb_8, ctx->decrypt = aes_decrypt_nb_8; - else if (ctx->Nb == 6) - ctx->encrypt = aes_encrypt_nb_6, ctx->decrypt = aes_decrypt_nb_6; - else if (ctx->Nb == 4) - ctx->encrypt = aes_encrypt_nb_4, ctx->decrypt = aes_decrypt_nb_4; - - /* - * Now do the key setup itself. - */ - rconst = 1; - for (i = 0; i < (ctx->Nr + 1) * ctx->Nb; i++) { - if (i < Nk) - ctx->keysched[i] = GET_32BIT_MSB_FIRST(key + 4 * i); - else { - word32 temp = ctx->keysched[i - 1]; - if (i % Nk == 0) { - int a, b, c, d; - a = (temp >> 16) & 0xFF; - b = (temp >> 8) & 0xFF; - c = (temp >> 0) & 0xFF; - d = (temp >> 24) & 0xFF; - temp = Sbox[a] ^ rconst; - temp = (temp << 8) | Sbox[b]; - temp = (temp << 8) | Sbox[c]; - temp = (temp << 8) | Sbox[d]; - rconst = mulby2(rconst); - } else if (i % Nk == 4 && Nk > 6) { - int a, b, c, d; - a = (temp >> 24) & 0xFF; - b = (temp >> 16) & 0xFF; - c = (temp >> 8) & 0xFF; - d = (temp >> 0) & 0xFF; - temp = Sbox[a]; - temp = (temp << 8) | Sbox[b]; - temp = (temp << 8) | Sbox[c]; - temp = (temp << 8) | Sbox[d]; - } - ctx->keysched[i] = ctx->keysched[i - Nk] ^ temp; - } - } - - /* - * Now prepare the modified keys for the inverse cipher. - */ - for (i = 0; i <= ctx->Nr; i++) { - for (j = 0; j < ctx->Nb; j++) { - word32 temp; - temp = ctx->keysched[(ctx->Nr - i) * ctx->Nb + j]; - if (i != 0 && i != ctx->Nr) { - /* - * Perform the InvMixColumn operation on i. The D - * tables give the result of InvMixColumn applied - * to Sboxinv on individual bytes, so we should - * compose Sbox with the D tables for this. - */ - int a, b, c, d; - a = (temp >> 24) & 0xFF; - b = (temp >> 16) & 0xFF; - c = (temp >> 8) & 0xFF; - d = (temp >> 0) & 0xFF; - temp = D0[Sbox[a]]; - temp ^= D1[Sbox[b]]; - temp ^= D2[Sbox[c]]; - temp ^= D3[Sbox[d]]; - } - ctx->invkeysched[i * ctx->Nb + j] = temp; - } - } -} - -static void aes_encrypt(AESContext * ctx, word32 * block) -{ - ctx->encrypt(ctx, block); -} - -static void aes_decrypt(AESContext * ctx, word32 * block) -{ - ctx->decrypt(ctx, block); -} - -static void aes_encrypt_cbc(unsigned char *blk, int len, AESContext * ctx) -{ - word32 iv[4]; - int i; - - assert((len & 15) == 0); - - memcpy(iv, ctx->iv, sizeof(iv)); - - while (len > 0) { - for (i = 0; i < 4; i++) - iv[i] ^= GET_32BIT_MSB_FIRST(blk + 4 * i); - aes_encrypt(ctx, iv); - for (i = 0; i < 4; i++) - PUT_32BIT_MSB_FIRST(blk + 4 * i, iv[i]); - blk += 16; - len -= 16; - } - - memcpy(ctx->iv, iv, sizeof(iv)); -} - -static void aes_decrypt_cbc(unsigned char *blk, int len, AESContext * ctx) -{ - word32 iv[4], x[4], ct[4]; - int i; - - assert((len & 15) == 0); - - memcpy(iv, ctx->iv, sizeof(iv)); - - while (len > 0) { - for (i = 0; i < 4; i++) - x[i] = ct[i] = GET_32BIT_MSB_FIRST(blk + 4 * i); - aes_decrypt(ctx, x); - for (i = 0; i < 4; i++) { - PUT_32BIT_MSB_FIRST(blk + 4 * i, iv[i] ^ x[i]); - iv[i] = ct[i]; - } - blk += 16; - len -= 16; - } - - memcpy(ctx->iv, iv, sizeof(iv)); -} - -static void aes_sdctr(unsigned char *blk, int len, AESContext *ctx) -{ - word32 iv[4], b[4], tmp; - int i; - - assert((len & 15) == 0); - - memcpy(iv, ctx->iv, sizeof(iv)); - - while (len > 0) { - memcpy(b, iv, sizeof(b)); - aes_encrypt(ctx, b); - for (i = 0; i < 4; i++) { - tmp = GET_32BIT_MSB_FIRST(blk + 4 * i); - PUT_32BIT_MSB_FIRST(blk + 4 * i, tmp ^ b[i]); - } - for (i = 3; i >= 0; i--) - if ((iv[i] = (iv[i] + 1) & 0xffffffff) != 0) - break; - blk += 16; - len -= 16; - } - - memcpy(ctx->iv, iv, sizeof(iv)); -} - -static void *aes_make_context(void) -{ - return snew(AESContext); -} - -static void aes_free_context(void *handle) -{ - sfree(handle); -} - -static void aes128_key(void *handle, unsigned char *key) -{ - AESContext *ctx = (AESContext *)handle; - aes_setup(ctx, 16, key, 16); -} - -static void aes192_key(void *handle, unsigned char *key) -{ - AESContext *ctx = (AESContext *)handle; - aes_setup(ctx, 16, key, 24); -} - -static void aes256_key(void *handle, unsigned char *key) -{ - AESContext *ctx = (AESContext *)handle; - aes_setup(ctx, 16, key, 32); -} - -static void aes_iv(void *handle, unsigned char *iv) -{ - AESContext *ctx = (AESContext *)handle; - int i; - for (i = 0; i < 4; i++) - ctx->iv[i] = GET_32BIT_MSB_FIRST(iv + 4 * i); -} - -static void aes_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len) -{ - AESContext *ctx = (AESContext *)handle; - aes_encrypt_cbc(blk, len, ctx); -} - -static void aes_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len) -{ - AESContext *ctx = (AESContext *)handle; - aes_decrypt_cbc(blk, len, ctx); -} - -static void aes_ssh2_sdctr(void *handle, unsigned char *blk, int len) -{ - AESContext *ctx = (AESContext *)handle; - aes_sdctr(blk, len, ctx); -} - -void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len) -{ - AESContext ctx; - aes_setup(&ctx, 16, key, 32); - memset(ctx.iv, 0, sizeof(ctx.iv)); - aes_encrypt_cbc(blk, len, &ctx); - memset(&ctx, 0, sizeof(ctx)); -} - -void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len) -{ - AESContext ctx; - aes_setup(&ctx, 16, key, 32); - memset(ctx.iv, 0, sizeof(ctx.iv)); - aes_decrypt_cbc(blk, len, &ctx); - memset(&ctx, 0, sizeof(ctx)); -} - -static const struct ssh2_cipher ssh_aes128_ctr = { - aes_make_context, aes_free_context, aes_iv, aes128_key, - aes_ssh2_sdctr, aes_ssh2_sdctr, - "aes128-ctr", - 16, 128, 0, "AES-128 SDCTR" -}; - -static const struct ssh2_cipher ssh_aes192_ctr = { - aes_make_context, aes_free_context, aes_iv, aes192_key, - aes_ssh2_sdctr, aes_ssh2_sdctr, - "aes192-ctr", - 16, 192, 0, "AES-192 SDCTR" -}; - -static const struct ssh2_cipher ssh_aes256_ctr = { - aes_make_context, aes_free_context, aes_iv, aes256_key, - aes_ssh2_sdctr, aes_ssh2_sdctr, - "aes256-ctr", - 16, 256, 0, "AES-256 SDCTR" -}; - -static const struct ssh2_cipher ssh_aes128 = { - aes_make_context, aes_free_context, aes_iv, aes128_key, - aes_ssh2_encrypt_blk, aes_ssh2_decrypt_blk, - "aes128-cbc", - 16, 128, SSH_CIPHER_IS_CBC, "AES-128 CBC" -}; - -static const struct ssh2_cipher ssh_aes192 = { - aes_make_context, aes_free_context, aes_iv, aes192_key, - aes_ssh2_encrypt_blk, aes_ssh2_decrypt_blk, - "aes192-cbc", - 16, 192, SSH_CIPHER_IS_CBC, "AES-192 CBC" -}; - -static const struct ssh2_cipher ssh_aes256 = { - aes_make_context, aes_free_context, aes_iv, aes256_key, - aes_ssh2_encrypt_blk, aes_ssh2_decrypt_blk, - "aes256-cbc", - 16, 256, SSH_CIPHER_IS_CBC, "AES-256 CBC" -}; - -static const struct ssh2_cipher ssh_rijndael_lysator = { - aes_make_context, aes_free_context, aes_iv, aes256_key, - aes_ssh2_encrypt_blk, aes_ssh2_decrypt_blk, - "rijndael-cbc@lysator.liu.se", - 16, 256, SSH_CIPHER_IS_CBC, "AES-256 CBC" -}; - -static const struct ssh2_cipher *const aes_list[] = { - &ssh_aes256_ctr, - &ssh_aes256, - &ssh_rijndael_lysator, - &ssh_aes192_ctr, - &ssh_aes192, - &ssh_aes128_ctr, - &ssh_aes128, -}; - -const struct ssh2_ciphers ssh2_aes = { - sizeof(aes_list) / sizeof(*aes_list), - aes_list -}; diff --git a/tools/plink/ssharcf.c b/tools/plink/ssharcf.c deleted file mode 100644 index e0b247e51..000000000 --- a/tools/plink/ssharcf.c +++ /dev/null @@ -1,123 +0,0 @@ -/* - * Arcfour (RC4) implementation for PuTTY. - * - * Coded from Schneier. - */ - -#include -#include "ssh.h" - -typedef struct { - unsigned char i, j, s[256]; -} ArcfourContext; - -static void arcfour_block(void *handle, unsigned char *blk, int len) -{ - ArcfourContext *ctx = (ArcfourContext *)handle; - unsigned k; - unsigned char tmp, i, j, *s; - - s = ctx->s; - i = ctx->i; j = ctx->j; - for (k = 0; (int)k < len; k++) { - i = (i + 1) & 0xff; - j = (j + s[i]) & 0xff; - tmp = s[i]; s[i] = s[j]; s[j] = tmp; - blk[k] ^= s[(s[i]+s[j]) & 0xff]; - } - ctx->i = i; ctx->j = j; -} - -static void arcfour_setkey(ArcfourContext *ctx, unsigned char const *key, - unsigned keybytes) -{ - unsigned char tmp, k[256], *s; - unsigned i, j; - - s = ctx->s; - assert(keybytes <= 256); - ctx->i = ctx->j = 0; - for (i = 0; i < 256; i++) { - s[i] = i; - k[i] = key[i % keybytes]; - } - j = 0; - for (i = 0; i < 256; i++) { - j = (j + s[i] + k[i]) & 0xff; - tmp = s[i]; s[i] = s[j]; s[j] = tmp; - } -} - -/* -- Interface with PuTTY -- */ - -/* - * We don't implement Arcfour in SSH-1 because it's utterly insecure in - * several ways. See CERT Vulnerability Notes VU#25309, VU#665372, - * and VU#565052. - * - * We don't implement the "arcfour" algorithm in SSH-2 because it doesn't - * stir the cipher state before emitting keystream, and hence is likely - * to leak data about the key. - */ - -static void *arcfour_make_context(void) -{ - return snew(ArcfourContext); -} - -static void arcfour_free_context(void *handle) -{ - sfree(handle); -} - -static void arcfour_stir(ArcfourContext *ctx) -{ - unsigned char *junk = snewn(1536, unsigned char); - memset(junk, 0, 1536); - arcfour_block(ctx, junk, 1536); - memset(junk, 0, 1536); - sfree(junk); -} - -static void arcfour128_key(void *handle, unsigned char *key) -{ - ArcfourContext *ctx = (ArcfourContext *)handle; - arcfour_setkey(ctx, key, 16); - arcfour_stir(ctx); -} - -static void arcfour256_key(void *handle, unsigned char *key) -{ - ArcfourContext *ctx = (ArcfourContext *)handle; - arcfour_setkey(ctx, key, 32); - arcfour_stir(ctx); -} - -static void arcfour_iv(void *handle, unsigned char *key) -{ - -} - -const struct ssh2_cipher ssh_arcfour128_ssh2 = { - arcfour_make_context, arcfour_free_context, arcfour_iv, arcfour128_key, - arcfour_block, arcfour_block, - "arcfour128", - 1, 128, 0, "Arcfour-128" -}; - -const struct ssh2_cipher ssh_arcfour256_ssh2 = { - arcfour_make_context, arcfour_free_context, arcfour_iv, arcfour256_key, - arcfour_block, arcfour_block, - "arcfour256", - 1, 256, 0, "Arcfour-256" -}; - -static const struct ssh2_cipher *const arcfour_list[] = { - &ssh_arcfour256_ssh2, - &ssh_arcfour128_ssh2, -}; - -const struct ssh2_ciphers ssh2_arcfour = { - sizeof(arcfour_list) / sizeof(*arcfour_list), - arcfour_list -}; diff --git a/tools/plink/sshblowf.c b/tools/plink/sshblowf.c deleted file mode 100644 index f770170c3..000000000 --- a/tools/plink/sshblowf.c +++ /dev/null @@ -1,588 +0,0 @@ -/* - * Blowfish implementation for PuTTY. - * - * Coded from scratch from the algorithm description. - */ - -#include -#include -#include "ssh.h" - -typedef struct { - word32 S0[256], S1[256], S2[256], S3[256], P[18]; - word32 iv0, iv1; /* for CBC mode */ -} BlowfishContext; - -/* - * The Blowfish init data: hex digits of the fractional part of pi. - * (ie pi as a hex fraction is 3.243F6A8885A308D3...) - */ -static const word32 parray[] = { - 0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344, 0xA4093822, 0x299F31D0, - 0x082EFA98, 0xEC4E6C89, 0x452821E6, 0x38D01377, 0xBE5466CF, 0x34E90C6C, - 0xC0AC29B7, 0xC97C50DD, 0x3F84D5B5, 0xB5470917, 0x9216D5D9, 0x8979FB1B, -}; - -static const word32 sbox0[] = { - 0xD1310BA6, 0x98DFB5AC, 0x2FFD72DB, 0xD01ADFB7, 0xB8E1AFED, 0x6A267E96, - 0xBA7C9045, 0xF12C7F99, 0x24A19947, 0xB3916CF7, 0x0801F2E2, 0x858EFC16, - 0x636920D8, 0x71574E69, 0xA458FEA3, 0xF4933D7E, 0x0D95748F, 0x728EB658, - 0x718BCD58, 0x82154AEE, 0x7B54A41D, 0xC25A59B5, 0x9C30D539, 0x2AF26013, - 0xC5D1B023, 0x286085F0, 0xCA417918, 0xB8DB38EF, 0x8E79DCB0, 0x603A180E, - 0x6C9E0E8B, 0xB01E8A3E, 0xD71577C1, 0xBD314B27, 0x78AF2FDA, 0x55605C60, - 0xE65525F3, 0xAA55AB94, 0x57489862, 0x63E81440, 0x55CA396A, 0x2AAB10B6, - 0xB4CC5C34, 0x1141E8CE, 0xA15486AF, 0x7C72E993, 0xB3EE1411, 0x636FBC2A, - 0x2BA9C55D, 0x741831F6, 0xCE5C3E16, 0x9B87931E, 0xAFD6BA33, 0x6C24CF5C, - 0x7A325381, 0x28958677, 0x3B8F4898, 0x6B4BB9AF, 0xC4BFE81B, 0x66282193, - 0x61D809CC, 0xFB21A991, 0x487CAC60, 0x5DEC8032, 0xEF845D5D, 0xE98575B1, - 0xDC262302, 0xEB651B88, 0x23893E81, 0xD396ACC5, 0x0F6D6FF3, 0x83F44239, - 0x2E0B4482, 0xA4842004, 0x69C8F04A, 0x9E1F9B5E, 0x21C66842, 0xF6E96C9A, - 0x670C9C61, 0xABD388F0, 0x6A51A0D2, 0xD8542F68, 0x960FA728, 0xAB5133A3, - 0x6EEF0B6C, 0x137A3BE4, 0xBA3BF050, 0x7EFB2A98, 0xA1F1651D, 0x39AF0176, - 0x66CA593E, 0x82430E88, 0x8CEE8619, 0x456F9FB4, 0x7D84A5C3, 0x3B8B5EBE, - 0xE06F75D8, 0x85C12073, 0x401A449F, 0x56C16AA6, 0x4ED3AA62, 0x363F7706, - 0x1BFEDF72, 0x429B023D, 0x37D0D724, 0xD00A1248, 0xDB0FEAD3, 0x49F1C09B, - 0x075372C9, 0x80991B7B, 0x25D479D8, 0xF6E8DEF7, 0xE3FE501A, 0xB6794C3B, - 0x976CE0BD, 0x04C006BA, 0xC1A94FB6, 0x409F60C4, 0x5E5C9EC2, 0x196A2463, - 0x68FB6FAF, 0x3E6C53B5, 0x1339B2EB, 0x3B52EC6F, 0x6DFC511F, 0x9B30952C, - 0xCC814544, 0xAF5EBD09, 0xBEE3D004, 0xDE334AFD, 0x660F2807, 0x192E4BB3, - 0xC0CBA857, 0x45C8740F, 0xD20B5F39, 0xB9D3FBDB, 0x5579C0BD, 0x1A60320A, - 0xD6A100C6, 0x402C7279, 0x679F25FE, 0xFB1FA3CC, 0x8EA5E9F8, 0xDB3222F8, - 0x3C7516DF, 0xFD616B15, 0x2F501EC8, 0xAD0552AB, 0x323DB5FA, 0xFD238760, - 0x53317B48, 0x3E00DF82, 0x9E5C57BB, 0xCA6F8CA0, 0x1A87562E, 0xDF1769DB, - 0xD542A8F6, 0x287EFFC3, 0xAC6732C6, 0x8C4F5573, 0x695B27B0, 0xBBCA58C8, - 0xE1FFA35D, 0xB8F011A0, 0x10FA3D98, 0xFD2183B8, 0x4AFCB56C, 0x2DD1D35B, - 0x9A53E479, 0xB6F84565, 0xD28E49BC, 0x4BFB9790, 0xE1DDF2DA, 0xA4CB7E33, - 0x62FB1341, 0xCEE4C6E8, 0xEF20CADA, 0x36774C01, 0xD07E9EFE, 0x2BF11FB4, - 0x95DBDA4D, 0xAE909198, 0xEAAD8E71, 0x6B93D5A0, 0xD08ED1D0, 0xAFC725E0, - 0x8E3C5B2F, 0x8E7594B7, 0x8FF6E2FB, 0xF2122B64, 0x8888B812, 0x900DF01C, - 0x4FAD5EA0, 0x688FC31C, 0xD1CFF191, 0xB3A8C1AD, 0x2F2F2218, 0xBE0E1777, - 0xEA752DFE, 0x8B021FA1, 0xE5A0CC0F, 0xB56F74E8, 0x18ACF3D6, 0xCE89E299, - 0xB4A84FE0, 0xFD13E0B7, 0x7CC43B81, 0xD2ADA8D9, 0x165FA266, 0x80957705, - 0x93CC7314, 0x211A1477, 0xE6AD2065, 0x77B5FA86, 0xC75442F5, 0xFB9D35CF, - 0xEBCDAF0C, 0x7B3E89A0, 0xD6411BD3, 0xAE1E7E49, 0x00250E2D, 0x2071B35E, - 0x226800BB, 0x57B8E0AF, 0x2464369B, 0xF009B91E, 0x5563911D, 0x59DFA6AA, - 0x78C14389, 0xD95A537F, 0x207D5BA2, 0x02E5B9C5, 0x83260376, 0x6295CFA9, - 0x11C81968, 0x4E734A41, 0xB3472DCA, 0x7B14A94A, 0x1B510052, 0x9A532915, - 0xD60F573F, 0xBC9BC6E4, 0x2B60A476, 0x81E67400, 0x08BA6FB5, 0x571BE91F, - 0xF296EC6B, 0x2A0DD915, 0xB6636521, 0xE7B9F9B6, 0xFF34052E, 0xC5855664, - 0x53B02D5D, 0xA99F8FA1, 0x08BA4799, 0x6E85076A, -}; - -static const word32 sbox1[] = { - 0x4B7A70E9, 0xB5B32944, 0xDB75092E, 0xC4192623, 0xAD6EA6B0, 0x49A7DF7D, - 0x9CEE60B8, 0x8FEDB266, 0xECAA8C71, 0x699A17FF, 0x5664526C, 0xC2B19EE1, - 0x193602A5, 0x75094C29, 0xA0591340, 0xE4183A3E, 0x3F54989A, 0x5B429D65, - 0x6B8FE4D6, 0x99F73FD6, 0xA1D29C07, 0xEFE830F5, 0x4D2D38E6, 0xF0255DC1, - 0x4CDD2086, 0x8470EB26, 0x6382E9C6, 0x021ECC5E, 0x09686B3F, 0x3EBAEFC9, - 0x3C971814, 0x6B6A70A1, 0x687F3584, 0x52A0E286, 0xB79C5305, 0xAA500737, - 0x3E07841C, 0x7FDEAE5C, 0x8E7D44EC, 0x5716F2B8, 0xB03ADA37, 0xF0500C0D, - 0xF01C1F04, 0x0200B3FF, 0xAE0CF51A, 0x3CB574B2, 0x25837A58, 0xDC0921BD, - 0xD19113F9, 0x7CA92FF6, 0x94324773, 0x22F54701, 0x3AE5E581, 0x37C2DADC, - 0xC8B57634, 0x9AF3DDA7, 0xA9446146, 0x0FD0030E, 0xECC8C73E, 0xA4751E41, - 0xE238CD99, 0x3BEA0E2F, 0x3280BBA1, 0x183EB331, 0x4E548B38, 0x4F6DB908, - 0x6F420D03, 0xF60A04BF, 0x2CB81290, 0x24977C79, 0x5679B072, 0xBCAF89AF, - 0xDE9A771F, 0xD9930810, 0xB38BAE12, 0xDCCF3F2E, 0x5512721F, 0x2E6B7124, - 0x501ADDE6, 0x9F84CD87, 0x7A584718, 0x7408DA17, 0xBC9F9ABC, 0xE94B7D8C, - 0xEC7AEC3A, 0xDB851DFA, 0x63094366, 0xC464C3D2, 0xEF1C1847, 0x3215D908, - 0xDD433B37, 0x24C2BA16, 0x12A14D43, 0x2A65C451, 0x50940002, 0x133AE4DD, - 0x71DFF89E, 0x10314E55, 0x81AC77D6, 0x5F11199B, 0x043556F1, 0xD7A3C76B, - 0x3C11183B, 0x5924A509, 0xF28FE6ED, 0x97F1FBFA, 0x9EBABF2C, 0x1E153C6E, - 0x86E34570, 0xEAE96FB1, 0x860E5E0A, 0x5A3E2AB3, 0x771FE71C, 0x4E3D06FA, - 0x2965DCB9, 0x99E71D0F, 0x803E89D6, 0x5266C825, 0x2E4CC978, 0x9C10B36A, - 0xC6150EBA, 0x94E2EA78, 0xA5FC3C53, 0x1E0A2DF4, 0xF2F74EA7, 0x361D2B3D, - 0x1939260F, 0x19C27960, 0x5223A708, 0xF71312B6, 0xEBADFE6E, 0xEAC31F66, - 0xE3BC4595, 0xA67BC883, 0xB17F37D1, 0x018CFF28, 0xC332DDEF, 0xBE6C5AA5, - 0x65582185, 0x68AB9802, 0xEECEA50F, 0xDB2F953B, 0x2AEF7DAD, 0x5B6E2F84, - 0x1521B628, 0x29076170, 0xECDD4775, 0x619F1510, 0x13CCA830, 0xEB61BD96, - 0x0334FE1E, 0xAA0363CF, 0xB5735C90, 0x4C70A239, 0xD59E9E0B, 0xCBAADE14, - 0xEECC86BC, 0x60622CA7, 0x9CAB5CAB, 0xB2F3846E, 0x648B1EAF, 0x19BDF0CA, - 0xA02369B9, 0x655ABB50, 0x40685A32, 0x3C2AB4B3, 0x319EE9D5, 0xC021B8F7, - 0x9B540B19, 0x875FA099, 0x95F7997E, 0x623D7DA8, 0xF837889A, 0x97E32D77, - 0x11ED935F, 0x16681281, 0x0E358829, 0xC7E61FD6, 0x96DEDFA1, 0x7858BA99, - 0x57F584A5, 0x1B227263, 0x9B83C3FF, 0x1AC24696, 0xCDB30AEB, 0x532E3054, - 0x8FD948E4, 0x6DBC3128, 0x58EBF2EF, 0x34C6FFEA, 0xFE28ED61, 0xEE7C3C73, - 0x5D4A14D9, 0xE864B7E3, 0x42105D14, 0x203E13E0, 0x45EEE2B6, 0xA3AAABEA, - 0xDB6C4F15, 0xFACB4FD0, 0xC742F442, 0xEF6ABBB5, 0x654F3B1D, 0x41CD2105, - 0xD81E799E, 0x86854DC7, 0xE44B476A, 0x3D816250, 0xCF62A1F2, 0x5B8D2646, - 0xFC8883A0, 0xC1C7B6A3, 0x7F1524C3, 0x69CB7492, 0x47848A0B, 0x5692B285, - 0x095BBF00, 0xAD19489D, 0x1462B174, 0x23820E00, 0x58428D2A, 0x0C55F5EA, - 0x1DADF43E, 0x233F7061, 0x3372F092, 0x8D937E41, 0xD65FECF1, 0x6C223BDB, - 0x7CDE3759, 0xCBEE7460, 0x4085F2A7, 0xCE77326E, 0xA6078084, 0x19F8509E, - 0xE8EFD855, 0x61D99735, 0xA969A7AA, 0xC50C06C2, 0x5A04ABFC, 0x800BCADC, - 0x9E447A2E, 0xC3453484, 0xFDD56705, 0x0E1E9EC9, 0xDB73DBD3, 0x105588CD, - 0x675FDA79, 0xE3674340, 0xC5C43465, 0x713E38D8, 0x3D28F89E, 0xF16DFF20, - 0x153E21E7, 0x8FB03D4A, 0xE6E39F2B, 0xDB83ADF7, -}; - -static const word32 sbox2[] = { - 0xE93D5A68, 0x948140F7, 0xF64C261C, 0x94692934, 0x411520F7, 0x7602D4F7, - 0xBCF46B2E, 0xD4A20068, 0xD4082471, 0x3320F46A, 0x43B7D4B7, 0x500061AF, - 0x1E39F62E, 0x97244546, 0x14214F74, 0xBF8B8840, 0x4D95FC1D, 0x96B591AF, - 0x70F4DDD3, 0x66A02F45, 0xBFBC09EC, 0x03BD9785, 0x7FAC6DD0, 0x31CB8504, - 0x96EB27B3, 0x55FD3941, 0xDA2547E6, 0xABCA0A9A, 0x28507825, 0x530429F4, - 0x0A2C86DA, 0xE9B66DFB, 0x68DC1462, 0xD7486900, 0x680EC0A4, 0x27A18DEE, - 0x4F3FFEA2, 0xE887AD8C, 0xB58CE006, 0x7AF4D6B6, 0xAACE1E7C, 0xD3375FEC, - 0xCE78A399, 0x406B2A42, 0x20FE9E35, 0xD9F385B9, 0xEE39D7AB, 0x3B124E8B, - 0x1DC9FAF7, 0x4B6D1856, 0x26A36631, 0xEAE397B2, 0x3A6EFA74, 0xDD5B4332, - 0x6841E7F7, 0xCA7820FB, 0xFB0AF54E, 0xD8FEB397, 0x454056AC, 0xBA489527, - 0x55533A3A, 0x20838D87, 0xFE6BA9B7, 0xD096954B, 0x55A867BC, 0xA1159A58, - 0xCCA92963, 0x99E1DB33, 0xA62A4A56, 0x3F3125F9, 0x5EF47E1C, 0x9029317C, - 0xFDF8E802, 0x04272F70, 0x80BB155C, 0x05282CE3, 0x95C11548, 0xE4C66D22, - 0x48C1133F, 0xC70F86DC, 0x07F9C9EE, 0x41041F0F, 0x404779A4, 0x5D886E17, - 0x325F51EB, 0xD59BC0D1, 0xF2BCC18F, 0x41113564, 0x257B7834, 0x602A9C60, - 0xDFF8E8A3, 0x1F636C1B, 0x0E12B4C2, 0x02E1329E, 0xAF664FD1, 0xCAD18115, - 0x6B2395E0, 0x333E92E1, 0x3B240B62, 0xEEBEB922, 0x85B2A20E, 0xE6BA0D99, - 0xDE720C8C, 0x2DA2F728, 0xD0127845, 0x95B794FD, 0x647D0862, 0xE7CCF5F0, - 0x5449A36F, 0x877D48FA, 0xC39DFD27, 0xF33E8D1E, 0x0A476341, 0x992EFF74, - 0x3A6F6EAB, 0xF4F8FD37, 0xA812DC60, 0xA1EBDDF8, 0x991BE14C, 0xDB6E6B0D, - 0xC67B5510, 0x6D672C37, 0x2765D43B, 0xDCD0E804, 0xF1290DC7, 0xCC00FFA3, - 0xB5390F92, 0x690FED0B, 0x667B9FFB, 0xCEDB7D9C, 0xA091CF0B, 0xD9155EA3, - 0xBB132F88, 0x515BAD24, 0x7B9479BF, 0x763BD6EB, 0x37392EB3, 0xCC115979, - 0x8026E297, 0xF42E312D, 0x6842ADA7, 0xC66A2B3B, 0x12754CCC, 0x782EF11C, - 0x6A124237, 0xB79251E7, 0x06A1BBE6, 0x4BFB6350, 0x1A6B1018, 0x11CAEDFA, - 0x3D25BDD8, 0xE2E1C3C9, 0x44421659, 0x0A121386, 0xD90CEC6E, 0xD5ABEA2A, - 0x64AF674E, 0xDA86A85F, 0xBEBFE988, 0x64E4C3FE, 0x9DBC8057, 0xF0F7C086, - 0x60787BF8, 0x6003604D, 0xD1FD8346, 0xF6381FB0, 0x7745AE04, 0xD736FCCC, - 0x83426B33, 0xF01EAB71, 0xB0804187, 0x3C005E5F, 0x77A057BE, 0xBDE8AE24, - 0x55464299, 0xBF582E61, 0x4E58F48F, 0xF2DDFDA2, 0xF474EF38, 0x8789BDC2, - 0x5366F9C3, 0xC8B38E74, 0xB475F255, 0x46FCD9B9, 0x7AEB2661, 0x8B1DDF84, - 0x846A0E79, 0x915F95E2, 0x466E598E, 0x20B45770, 0x8CD55591, 0xC902DE4C, - 0xB90BACE1, 0xBB8205D0, 0x11A86248, 0x7574A99E, 0xB77F19B6, 0xE0A9DC09, - 0x662D09A1, 0xC4324633, 0xE85A1F02, 0x09F0BE8C, 0x4A99A025, 0x1D6EFE10, - 0x1AB93D1D, 0x0BA5A4DF, 0xA186F20F, 0x2868F169, 0xDCB7DA83, 0x573906FE, - 0xA1E2CE9B, 0x4FCD7F52, 0x50115E01, 0xA70683FA, 0xA002B5C4, 0x0DE6D027, - 0x9AF88C27, 0x773F8641, 0xC3604C06, 0x61A806B5, 0xF0177A28, 0xC0F586E0, - 0x006058AA, 0x30DC7D62, 0x11E69ED7, 0x2338EA63, 0x53C2DD94, 0xC2C21634, - 0xBBCBEE56, 0x90BCB6DE, 0xEBFC7DA1, 0xCE591D76, 0x6F05E409, 0x4B7C0188, - 0x39720A3D, 0x7C927C24, 0x86E3725F, 0x724D9DB9, 0x1AC15BB4, 0xD39EB8FC, - 0xED545578, 0x08FCA5B5, 0xD83D7CD3, 0x4DAD0FC4, 0x1E50EF5E, 0xB161E6F8, - 0xA28514D9, 0x6C51133C, 0x6FD5C7E7, 0x56E14EC4, 0x362ABFCE, 0xDDC6C837, - 0xD79A3234, 0x92638212, 0x670EFA8E, 0x406000E0, -}; - -static const word32 sbox3[] = { - 0x3A39CE37, 0xD3FAF5CF, 0xABC27737, 0x5AC52D1B, 0x5CB0679E, 0x4FA33742, - 0xD3822740, 0x99BC9BBE, 0xD5118E9D, 0xBF0F7315, 0xD62D1C7E, 0xC700C47B, - 0xB78C1B6B, 0x21A19045, 0xB26EB1BE, 0x6A366EB4, 0x5748AB2F, 0xBC946E79, - 0xC6A376D2, 0x6549C2C8, 0x530FF8EE, 0x468DDE7D, 0xD5730A1D, 0x4CD04DC6, - 0x2939BBDB, 0xA9BA4650, 0xAC9526E8, 0xBE5EE304, 0xA1FAD5F0, 0x6A2D519A, - 0x63EF8CE2, 0x9A86EE22, 0xC089C2B8, 0x43242EF6, 0xA51E03AA, 0x9CF2D0A4, - 0x83C061BA, 0x9BE96A4D, 0x8FE51550, 0xBA645BD6, 0x2826A2F9, 0xA73A3AE1, - 0x4BA99586, 0xEF5562E9, 0xC72FEFD3, 0xF752F7DA, 0x3F046F69, 0x77FA0A59, - 0x80E4A915, 0x87B08601, 0x9B09E6AD, 0x3B3EE593, 0xE990FD5A, 0x9E34D797, - 0x2CF0B7D9, 0x022B8B51, 0x96D5AC3A, 0x017DA67D, 0xD1CF3ED6, 0x7C7D2D28, - 0x1F9F25CF, 0xADF2B89B, 0x5AD6B472, 0x5A88F54C, 0xE029AC71, 0xE019A5E6, - 0x47B0ACFD, 0xED93FA9B, 0xE8D3C48D, 0x283B57CC, 0xF8D56629, 0x79132E28, - 0x785F0191, 0xED756055, 0xF7960E44, 0xE3D35E8C, 0x15056DD4, 0x88F46DBA, - 0x03A16125, 0x0564F0BD, 0xC3EB9E15, 0x3C9057A2, 0x97271AEC, 0xA93A072A, - 0x1B3F6D9B, 0x1E6321F5, 0xF59C66FB, 0x26DCF319, 0x7533D928, 0xB155FDF5, - 0x03563482, 0x8ABA3CBB, 0x28517711, 0xC20AD9F8, 0xABCC5167, 0xCCAD925F, - 0x4DE81751, 0x3830DC8E, 0x379D5862, 0x9320F991, 0xEA7A90C2, 0xFB3E7BCE, - 0x5121CE64, 0x774FBE32, 0xA8B6E37E, 0xC3293D46, 0x48DE5369, 0x6413E680, - 0xA2AE0810, 0xDD6DB224, 0x69852DFD, 0x09072166, 0xB39A460A, 0x6445C0DD, - 0x586CDECF, 0x1C20C8AE, 0x5BBEF7DD, 0x1B588D40, 0xCCD2017F, 0x6BB4E3BB, - 0xDDA26A7E, 0x3A59FF45, 0x3E350A44, 0xBCB4CDD5, 0x72EACEA8, 0xFA6484BB, - 0x8D6612AE, 0xBF3C6F47, 0xD29BE463, 0x542F5D9E, 0xAEC2771B, 0xF64E6370, - 0x740E0D8D, 0xE75B1357, 0xF8721671, 0xAF537D5D, 0x4040CB08, 0x4EB4E2CC, - 0x34D2466A, 0x0115AF84, 0xE1B00428, 0x95983A1D, 0x06B89FB4, 0xCE6EA048, - 0x6F3F3B82, 0x3520AB82, 0x011A1D4B, 0x277227F8, 0x611560B1, 0xE7933FDC, - 0xBB3A792B, 0x344525BD, 0xA08839E1, 0x51CE794B, 0x2F32C9B7, 0xA01FBAC9, - 0xE01CC87E, 0xBCC7D1F6, 0xCF0111C3, 0xA1E8AAC7, 0x1A908749, 0xD44FBD9A, - 0xD0DADECB, 0xD50ADA38, 0x0339C32A, 0xC6913667, 0x8DF9317C, 0xE0B12B4F, - 0xF79E59B7, 0x43F5BB3A, 0xF2D519FF, 0x27D9459C, 0xBF97222C, 0x15E6FC2A, - 0x0F91FC71, 0x9B941525, 0xFAE59361, 0xCEB69CEB, 0xC2A86459, 0x12BAA8D1, - 0xB6C1075E, 0xE3056A0C, 0x10D25065, 0xCB03A442, 0xE0EC6E0E, 0x1698DB3B, - 0x4C98A0BE, 0x3278E964, 0x9F1F9532, 0xE0D392DF, 0xD3A0342B, 0x8971F21E, - 0x1B0A7441, 0x4BA3348C, 0xC5BE7120, 0xC37632D8, 0xDF359F8D, 0x9B992F2E, - 0xE60B6F47, 0x0FE3F11D, 0xE54CDA54, 0x1EDAD891, 0xCE6279CF, 0xCD3E7E6F, - 0x1618B166, 0xFD2C1D05, 0x848FD2C5, 0xF6FB2299, 0xF523F357, 0xA6327623, - 0x93A83531, 0x56CCCD02, 0xACF08162, 0x5A75EBB5, 0x6E163697, 0x88D273CC, - 0xDE966292, 0x81B949D0, 0x4C50901B, 0x71C65614, 0xE6C6C7BD, 0x327A140A, - 0x45E1D006, 0xC3F27B9A, 0xC9AA53FD, 0x62A80F00, 0xBB25BFE2, 0x35BDD2F6, - 0x71126905, 0xB2040222, 0xB6CBCF7C, 0xCD769C2B, 0x53113EC0, 0x1640E3D3, - 0x38ABBD60, 0x2547ADF0, 0xBA38209C, 0xF746CE76, 0x77AFA1C5, 0x20756060, - 0x85CBFE4E, 0x8AE88DD8, 0x7AAAF9B0, 0x4CF9AA7E, 0x1948C25C, 0x02FB8A8C, - 0x01C36AE4, 0xD6EBE1F9, 0x90D4F869, 0xA65CDEA0, 0x3F09252D, 0xC208E69F, - 0xB74E6132, 0xCE77E25B, 0x578FDFE3, 0x3AC372E6, -}; - -#define Fprime(a,b,c,d) ( ( (S0[a] + S1[b]) ^ S2[c] ) + S3[d] ) -#define F(x) Fprime( ((x>>24)&0xFF), ((x>>16)&0xFF), ((x>>8)&0xFF), (x&0xFF) ) -#define ROUND(n) ( xL ^= P[n], t = xL, xL = F(xL) ^ xR, xR = t ) - -static void blowfish_encrypt(word32 xL, word32 xR, word32 * output, - BlowfishContext * ctx) -{ - word32 *S0 = ctx->S0; - word32 *S1 = ctx->S1; - word32 *S2 = ctx->S2; - word32 *S3 = ctx->S3; - word32 *P = ctx->P; - word32 t; - - ROUND(0); - ROUND(1); - ROUND(2); - ROUND(3); - ROUND(4); - ROUND(5); - ROUND(6); - ROUND(7); - ROUND(8); - ROUND(9); - ROUND(10); - ROUND(11); - ROUND(12); - ROUND(13); - ROUND(14); - ROUND(15); - xL ^= P[16]; - xR ^= P[17]; - - output[0] = xR; - output[1] = xL; -} - -static void blowfish_decrypt(word32 xL, word32 xR, word32 * output, - BlowfishContext * ctx) -{ - word32 *S0 = ctx->S0; - word32 *S1 = ctx->S1; - word32 *S2 = ctx->S2; - word32 *S3 = ctx->S3; - word32 *P = ctx->P; - word32 t; - - ROUND(17); - ROUND(16); - ROUND(15); - ROUND(14); - ROUND(13); - ROUND(12); - ROUND(11); - ROUND(10); - ROUND(9); - ROUND(8); - ROUND(7); - ROUND(6); - ROUND(5); - ROUND(4); - ROUND(3); - ROUND(2); - xL ^= P[1]; - xR ^= P[0]; - - output[0] = xR; - output[1] = xL; -} - -static void blowfish_lsb_encrypt_cbc(unsigned char *blk, int len, - BlowfishContext * ctx) -{ - word32 xL, xR, out[2], iv0, iv1; - - assert((len & 7) == 0); - - iv0 = ctx->iv0; - iv1 = ctx->iv1; - - while (len > 0) { - xL = GET_32BIT_LSB_FIRST(blk); - xR = GET_32BIT_LSB_FIRST(blk + 4); - iv0 ^= xL; - iv1 ^= xR; - blowfish_encrypt(iv0, iv1, out, ctx); - iv0 = out[0]; - iv1 = out[1]; - PUT_32BIT_LSB_FIRST(blk, iv0); - PUT_32BIT_LSB_FIRST(blk + 4, iv1); - blk += 8; - len -= 8; - } - - ctx->iv0 = iv0; - ctx->iv1 = iv1; -} - -static void blowfish_lsb_decrypt_cbc(unsigned char *blk, int len, - BlowfishContext * ctx) -{ - word32 xL, xR, out[2], iv0, iv1; - - assert((len & 7) == 0); - - iv0 = ctx->iv0; - iv1 = ctx->iv1; - - while (len > 0) { - xL = GET_32BIT_LSB_FIRST(blk); - xR = GET_32BIT_LSB_FIRST(blk + 4); - blowfish_decrypt(xL, xR, out, ctx); - iv0 ^= out[0]; - iv1 ^= out[1]; - PUT_32BIT_LSB_FIRST(blk, iv0); - PUT_32BIT_LSB_FIRST(blk + 4, iv1); - iv0 = xL; - iv1 = xR; - blk += 8; - len -= 8; - } - - ctx->iv0 = iv0; - ctx->iv1 = iv1; -} - -static void blowfish_msb_encrypt_cbc(unsigned char *blk, int len, - BlowfishContext * ctx) -{ - word32 xL, xR, out[2], iv0, iv1; - - assert((len & 7) == 0); - - iv0 = ctx->iv0; - iv1 = ctx->iv1; - - while (len > 0) { - xL = GET_32BIT_MSB_FIRST(blk); - xR = GET_32BIT_MSB_FIRST(blk + 4); - iv0 ^= xL; - iv1 ^= xR; - blowfish_encrypt(iv0, iv1, out, ctx); - iv0 = out[0]; - iv1 = out[1]; - PUT_32BIT_MSB_FIRST(blk, iv0); - PUT_32BIT_MSB_FIRST(blk + 4, iv1); - blk += 8; - len -= 8; - } - - ctx->iv0 = iv0; - ctx->iv1 = iv1; -} - -static void blowfish_msb_decrypt_cbc(unsigned char *blk, int len, - BlowfishContext * ctx) -{ - word32 xL, xR, out[2], iv0, iv1; - - assert((len & 7) == 0); - - iv0 = ctx->iv0; - iv1 = ctx->iv1; - - while (len > 0) { - xL = GET_32BIT_MSB_FIRST(blk); - xR = GET_32BIT_MSB_FIRST(blk + 4); - blowfish_decrypt(xL, xR, out, ctx); - iv0 ^= out[0]; - iv1 ^= out[1]; - PUT_32BIT_MSB_FIRST(blk, iv0); - PUT_32BIT_MSB_FIRST(blk + 4, iv1); - iv0 = xL; - iv1 = xR; - blk += 8; - len -= 8; - } - - ctx->iv0 = iv0; - ctx->iv1 = iv1; -} - -static void blowfish_msb_sdctr(unsigned char *blk, int len, - BlowfishContext * ctx) -{ - word32 b[2], iv0, iv1, tmp; - - assert((len & 7) == 0); - - iv0 = ctx->iv0; - iv1 = ctx->iv1; - - while (len > 0) { - blowfish_encrypt(iv0, iv1, b, ctx); - tmp = GET_32BIT_MSB_FIRST(blk); - PUT_32BIT_MSB_FIRST(blk, tmp ^ b[0]); - tmp = GET_32BIT_MSB_FIRST(blk + 4); - PUT_32BIT_MSB_FIRST(blk + 4, tmp ^ b[1]); - if ((iv1 = (iv1 + 1) & 0xffffffff) == 0) - iv0 = (iv0 + 1) & 0xffffffff; - blk += 8; - len -= 8; - } - - ctx->iv0 = iv0; - ctx->iv1 = iv1; -} - -static void blowfish_setkey(BlowfishContext * ctx, - const unsigned char *key, short keybytes) -{ - word32 *S0 = ctx->S0; - word32 *S1 = ctx->S1; - word32 *S2 = ctx->S2; - word32 *S3 = ctx->S3; - word32 *P = ctx->P; - word32 str[2]; - int i; - - for (i = 0; i < 18; i++) { - P[i] = parray[i]; - P[i] ^= - ((word32) (unsigned char) (key[(i * 4 + 0) % keybytes])) << 24; - P[i] ^= - ((word32) (unsigned char) (key[(i * 4 + 1) % keybytes])) << 16; - P[i] ^= - ((word32) (unsigned char) (key[(i * 4 + 2) % keybytes])) << 8; - P[i] ^= ((word32) (unsigned char) (key[(i * 4 + 3) % keybytes])); - } - - for (i = 0; i < 256; i++) { - S0[i] = sbox0[i]; - S1[i] = sbox1[i]; - S2[i] = sbox2[i]; - S3[i] = sbox3[i]; - } - - str[0] = str[1] = 0; - - for (i = 0; i < 18; i += 2) { - blowfish_encrypt(str[0], str[1], str, ctx); - P[i] = str[0]; - P[i + 1] = str[1]; - } - - for (i = 0; i < 256; i += 2) { - blowfish_encrypt(str[0], str[1], str, ctx); - S0[i] = str[0]; - S0[i + 1] = str[1]; - } - for (i = 0; i < 256; i += 2) { - blowfish_encrypt(str[0], str[1], str, ctx); - S1[i] = str[0]; - S1[i + 1] = str[1]; - } - for (i = 0; i < 256; i += 2) { - blowfish_encrypt(str[0], str[1], str, ctx); - S2[i] = str[0]; - S2[i + 1] = str[1]; - } - for (i = 0; i < 256; i += 2) { - blowfish_encrypt(str[0], str[1], str, ctx); - S3[i] = str[0]; - S3[i + 1] = str[1]; - } -} - -/* -- Interface with PuTTY -- */ - -#define SSH_SESSION_KEY_LENGTH 32 - -static void *blowfish_make_context(void) -{ - return snew(BlowfishContext); -} - -static void *blowfish_ssh1_make_context(void) -{ - /* In SSH-1, need one key for each direction */ - return snewn(2, BlowfishContext); -} - -static void blowfish_free_context(void *handle) -{ - sfree(handle); -} - -static void blowfish_key(void *handle, unsigned char *key) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - blowfish_setkey(ctx, key, 16); -} - -static void blowfish256_key(void *handle, unsigned char *key) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - blowfish_setkey(ctx, key, 32); -} - -static void blowfish_iv(void *handle, unsigned char *key) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - ctx->iv0 = GET_32BIT_MSB_FIRST(key); - ctx->iv1 = GET_32BIT_MSB_FIRST(key + 4); -} - -static void blowfish_sesskey(void *handle, unsigned char *key) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - blowfish_setkey(ctx, key, SSH_SESSION_KEY_LENGTH); - ctx->iv0 = 0; - ctx->iv1 = 0; - ctx[1] = ctx[0]; /* structure copy */ -} - -static void blowfish_ssh1_encrypt_blk(void *handle, unsigned char *blk, - int len) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - blowfish_lsb_encrypt_cbc(blk, len, ctx); -} - -static void blowfish_ssh1_decrypt_blk(void *handle, unsigned char *blk, - int len) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - blowfish_lsb_decrypt_cbc(blk, len, ctx+1); -} - -static void blowfish_ssh2_encrypt_blk(void *handle, unsigned char *blk, - int len) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - blowfish_msb_encrypt_cbc(blk, len, ctx); -} - -static void blowfish_ssh2_decrypt_blk(void *handle, unsigned char *blk, - int len) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - blowfish_msb_decrypt_cbc(blk, len, ctx); -} - -static void blowfish_ssh2_sdctr(void *handle, unsigned char *blk, - int len) -{ - BlowfishContext *ctx = (BlowfishContext *)handle; - blowfish_msb_sdctr(blk, len, ctx); -} - -const struct ssh_cipher ssh_blowfish_ssh1 = { - blowfish_ssh1_make_context, blowfish_free_context, blowfish_sesskey, - blowfish_ssh1_encrypt_blk, blowfish_ssh1_decrypt_blk, - 8, "Blowfish-128 CBC" -}; - -static const struct ssh2_cipher ssh_blowfish_ssh2 = { - blowfish_make_context, blowfish_free_context, blowfish_iv, blowfish_key, - blowfish_ssh2_encrypt_blk, blowfish_ssh2_decrypt_blk, - "blowfish-cbc", - 8, 128, SSH_CIPHER_IS_CBC, "Blowfish-128 CBC" -}; - -static const struct ssh2_cipher ssh_blowfish_ssh2_ctr = { - blowfish_make_context, blowfish_free_context, blowfish_iv, blowfish256_key, - blowfish_ssh2_sdctr, blowfish_ssh2_sdctr, - "blowfish-ctr", - 8, 256, 0, "Blowfish-256 SDCTR" -}; - -static const struct ssh2_cipher *const blowfish_list[] = { - &ssh_blowfish_ssh2_ctr, - &ssh_blowfish_ssh2 -}; - -const struct ssh2_ciphers ssh2_blowfish = { - sizeof(blowfish_list) / sizeof(*blowfish_list), - blowfish_list -}; diff --git a/tools/plink/sshbn.c b/tools/plink/sshbn.c deleted file mode 100644 index e9ff0cde4..000000000 --- a/tools/plink/sshbn.c +++ /dev/null @@ -1,1092 +0,0 @@ -/* - * Bignum routines for RSA and DH and stuff. - */ - -#include -#include -#include -#include - -#include "misc.h" - -/* - * Usage notes: - * * Do not call the DIVMOD_WORD macro with expressions such as array - * subscripts, as some implementations object to this (see below). - * * Note that none of the division methods below will cope if the - * quotient won't fit into BIGNUM_INT_BITS. Callers should be careful - * to avoid this case. - * If this condition occurs, in the case of the x86 DIV instruction, - * an overflow exception will occur, which (according to a correspondent) - * will manifest on Windows as something like - * 0xC0000095: Integer overflow - * The C variant won't give the right answer, either. - */ - -#if defined __GNUC__ && defined __i386__ -typedef unsigned long BignumInt; -typedef unsigned long long BignumDblInt; -#define BIGNUM_INT_MASK 0xFFFFFFFFUL -#define BIGNUM_TOP_BIT 0x80000000UL -#define BIGNUM_INT_BITS 32 -#define MUL_WORD(w1, w2) ((BignumDblInt)w1 * w2) -#define DIVMOD_WORD(q, r, hi, lo, w) \ - __asm__("div %2" : \ - "=d" (r), "=a" (q) : \ - "r" (w), "d" (hi), "a" (lo)) -#elif defined _MSC_VER && defined _M_IX86 -typedef unsigned __int32 BignumInt; -typedef unsigned __int64 BignumDblInt; -#define BIGNUM_INT_MASK 0xFFFFFFFFUL -#define BIGNUM_TOP_BIT 0x80000000UL -#define BIGNUM_INT_BITS 32 -#define MUL_WORD(w1, w2) ((BignumDblInt)w1 * w2) -/* Note: MASM interprets array subscripts in the macro arguments as - * assembler syntax, which gives the wrong answer. Don't supply them. - * */ -#define DIVMOD_WORD(q, r, hi, lo, w) do { \ - __asm mov edx, hi \ - __asm mov eax, lo \ - __asm div w \ - __asm mov r, edx \ - __asm mov q, eax \ -} while(0) -#else -typedef unsigned short BignumInt; -typedef unsigned long BignumDblInt; -#define BIGNUM_INT_MASK 0xFFFFU -#define BIGNUM_TOP_BIT 0x8000U -#define BIGNUM_INT_BITS 16 -#define MUL_WORD(w1, w2) ((BignumDblInt)w1 * w2) -#define DIVMOD_WORD(q, r, hi, lo, w) do { \ - BignumDblInt n = (((BignumDblInt)hi) << BIGNUM_INT_BITS) | lo; \ - q = n / w; \ - r = n % w; \ -} while (0) -#endif - -#define BIGNUM_INT_BYTES (BIGNUM_INT_BITS / 8) - -#define BIGNUM_INTERNAL -typedef BignumInt *Bignum; - -#include "ssh.h" - -BignumInt bnZero[1] = { 0 }; -BignumInt bnOne[2] = { 1, 1 }; - -/* - * The Bignum format is an array of `BignumInt'. The first - * element of the array counts the remaining elements. The - * remaining elements express the actual number, base 2^BIGNUM_INT_BITS, _least_ - * significant digit first. (So it's trivial to extract the bit - * with value 2^n for any n.) - * - * All Bignums in this module are positive. Negative numbers must - * be dealt with outside it. - * - * INVARIANT: the most significant word of any Bignum must be - * nonzero. - */ - -Bignum Zero = bnZero, One = bnOne; - -static Bignum newbn(int length) -{ - Bignum b = snewn(length + 1, BignumInt); - if (!b) - abort(); /* FIXME */ - memset(b, 0, (length + 1) * sizeof(*b)); - b[0] = length; - return b; -} - -void bn_restore_invariant(Bignum b) -{ - while (b[0] > 1 && b[b[0]] == 0) - b[0]--; -} - -Bignum copybn(Bignum orig) -{ - Bignum b = snewn(orig[0] + 1, BignumInt); - if (!b) - abort(); /* FIXME */ - memcpy(b, orig, (orig[0] + 1) * sizeof(*b)); - return b; -} - -void freebn(Bignum b) -{ - /* - * Burn the evidence, just in case. - */ - memset(b, 0, sizeof(b[0]) * (b[0] + 1)); - sfree(b); -} - -Bignum bn_power_2(int n) -{ - Bignum ret = newbn(n / BIGNUM_INT_BITS + 1); - bignum_set_bit(ret, n, 1); - return ret; -} - -/* - * Compute c = a * b. - * Input is in the first len words of a and b. - * Result is returned in the first 2*len words of c. - */ -static void internal_mul(BignumInt *a, BignumInt *b, - BignumInt *c, int len) -{ - int i, j; - BignumDblInt t; - - for (j = 0; j < 2 * len; j++) - c[j] = 0; - - for (i = len - 1; i >= 0; i--) { - t = 0; - for (j = len - 1; j >= 0; j--) { - t += MUL_WORD(a[i], (BignumDblInt) b[j]); - t += (BignumDblInt) c[i + j + 1]; - c[i + j + 1] = (BignumInt) t; - t = t >> BIGNUM_INT_BITS; - } - c[i] = (BignumInt) t; - } -} - -static void internal_add_shifted(BignumInt *number, - unsigned n, int shift) -{ - int word = 1 + (shift / BIGNUM_INT_BITS); - int bshift = shift % BIGNUM_INT_BITS; - BignumDblInt addend; - - addend = (BignumDblInt)n << bshift; - - while (addend) { - addend += number[word]; - number[word] = (BignumInt) addend & BIGNUM_INT_MASK; - addend >>= BIGNUM_INT_BITS; - word++; - } -} - -/* - * Compute a = a % m. - * Input in first alen words of a and first mlen words of m. - * Output in first alen words of a - * (of which first alen-mlen words will be zero). - * The MSW of m MUST have its high bit set. - * Quotient is accumulated in the `quotient' array, which is a Bignum - * rather than the internal bigendian format. Quotient parts are shifted - * left by `qshift' before adding into quot. - */ -static void internal_mod(BignumInt *a, int alen, - BignumInt *m, int mlen, - BignumInt *quot, int qshift) -{ - BignumInt m0, m1; - unsigned int h; - int i, k; - - m0 = m[0]; - if (mlen > 1) - m1 = m[1]; - else - m1 = 0; - - for (i = 0; i <= alen - mlen; i++) { - BignumDblInt t; - unsigned int q, r, c, ai1; - - if (i == 0) { - h = 0; - } else { - h = a[i - 1]; - a[i - 1] = 0; - } - - if (i == alen - 1) - ai1 = 0; - else - ai1 = a[i + 1]; - - /* Find q = h:a[i] / m0 */ - if (h >= m0) { - /* - * Special case. - * - * To illustrate it, suppose a BignumInt is 8 bits, and - * we are dividing (say) A1:23:45:67 by A1:B2:C3. Then - * our initial division will be 0xA123 / 0xA1, which - * will give a quotient of 0x100 and a divide overflow. - * However, the invariants in this division algorithm - * are not violated, since the full number A1:23:... is - * _less_ than the quotient prefix A1:B2:... and so the - * following correction loop would have sorted it out. - * - * In this situation we set q to be the largest - * quotient we _can_ stomach (0xFF, of course). - */ - q = BIGNUM_INT_MASK; - } else { - /* Macro doesn't want an array subscript expression passed - * into it (see definition), so use a temporary. */ - BignumInt tmplo = a[i]; - DIVMOD_WORD(q, r, h, tmplo, m0); - - /* Refine our estimate of q by looking at - h:a[i]:a[i+1] / m0:m1 */ - t = MUL_WORD(m1, q); - if (t > ((BignumDblInt) r << BIGNUM_INT_BITS) + ai1) { - q--; - t -= m1; - r = (r + m0) & BIGNUM_INT_MASK; /* overflow? */ - if (r >= (BignumDblInt) m0 && - t > ((BignumDblInt) r << BIGNUM_INT_BITS) + ai1) q--; - } - } - - /* Subtract q * m from a[i...] */ - c = 0; - for (k = mlen - 1; k >= 0; k--) { - t = MUL_WORD(q, m[k]); - t += c; - c = (unsigned)(t >> BIGNUM_INT_BITS); - if ((BignumInt) t > a[i + k]) - c++; - a[i + k] -= (BignumInt) t; - } - - /* Add back m in case of borrow */ - if (c != h) { - t = 0; - for (k = mlen - 1; k >= 0; k--) { - t += m[k]; - t += a[i + k]; - a[i + k] = (BignumInt) t; - t = t >> BIGNUM_INT_BITS; - } - q--; - } - if (quot) - internal_add_shifted(quot, q, qshift + BIGNUM_INT_BITS * (alen - mlen - i)); - } -} - -/* - * Compute (base ^ exp) % mod. - */ -Bignum modpow(Bignum base_in, Bignum exp, Bignum mod) -{ - BignumInt *a, *b, *n, *m; - int mshift; - int mlen, i, j; - Bignum base, result; - - /* - * The most significant word of mod needs to be non-zero. It - * should already be, but let's make sure. - */ - assert(mod[mod[0]] != 0); - - /* - * Make sure the base is smaller than the modulus, by reducing - * it modulo the modulus if not. - */ - base = bigmod(base_in, mod); - - /* Allocate m of size mlen, copy mod to m */ - /* We use big endian internally */ - mlen = mod[0]; - m = snewn(mlen, BignumInt); - for (j = 0; j < mlen; j++) - m[j] = mod[mod[0] - j]; - - /* Shift m left to make msb bit set */ - for (mshift = 0; mshift < BIGNUM_INT_BITS-1; mshift++) - if ((m[0] << mshift) & BIGNUM_TOP_BIT) - break; - if (mshift) { - for (i = 0; i < mlen - 1; i++) - m[i] = (m[i] << mshift) | (m[i + 1] >> (BIGNUM_INT_BITS - mshift)); - m[mlen - 1] = m[mlen - 1] << mshift; - } - - /* Allocate n of size mlen, copy base to n */ - n = snewn(mlen, BignumInt); - i = mlen - base[0]; - for (j = 0; j < i; j++) - n[j] = 0; - for (j = 0; j < (int)base[0]; j++) - n[i + j] = base[base[0] - j]; - - /* Allocate a and b of size 2*mlen. Set a = 1 */ - a = snewn(2 * mlen, BignumInt); - b = snewn(2 * mlen, BignumInt); - for (i = 0; i < 2 * mlen; i++) - a[i] = 0; - a[2 * mlen - 1] = 1; - - /* Skip leading zero bits of exp. */ - i = 0; - j = BIGNUM_INT_BITS-1; - while (i < (int)exp[0] && (exp[exp[0] - i] & (1 << j)) == 0) { - j--; - if (j < 0) { - i++; - j = BIGNUM_INT_BITS-1; - } - } - - /* Main computation */ - while (i < (int)exp[0]) { - while (j >= 0) { - internal_mul(a + mlen, a + mlen, b, mlen); - internal_mod(b, mlen * 2, m, mlen, NULL, 0); - if ((exp[exp[0] - i] & (1 << j)) != 0) { - internal_mul(b + mlen, n, a, mlen); - internal_mod(a, mlen * 2, m, mlen, NULL, 0); - } else { - BignumInt *t; - t = a; - a = b; - b = t; - } - j--; - } - i++; - j = BIGNUM_INT_BITS-1; - } - - /* Fixup result in case the modulus was shifted */ - if (mshift) { - for (i = mlen - 1; i < 2 * mlen - 1; i++) - a[i] = (a[i] << mshift) | (a[i + 1] >> (BIGNUM_INT_BITS - mshift)); - a[2 * mlen - 1] = a[2 * mlen - 1] << mshift; - internal_mod(a, mlen * 2, m, mlen, NULL, 0); - for (i = 2 * mlen - 1; i >= mlen; i--) - a[i] = (a[i] >> mshift) | (a[i - 1] << (BIGNUM_INT_BITS - mshift)); - } - - /* Copy result to buffer */ - result = newbn(mod[0]); - for (i = 0; i < mlen; i++) - result[result[0] - i] = a[i + mlen]; - while (result[0] > 1 && result[result[0]] == 0) - result[0]--; - - /* Free temporary arrays */ - for (i = 0; i < 2 * mlen; i++) - a[i] = 0; - sfree(a); - for (i = 0; i < 2 * mlen; i++) - b[i] = 0; - sfree(b); - for (i = 0; i < mlen; i++) - m[i] = 0; - sfree(m); - for (i = 0; i < mlen; i++) - n[i] = 0; - sfree(n); - - freebn(base); - - return result; -} - -/* - * Compute (p * q) % mod. - * The most significant word of mod MUST be non-zero. - * We assume that the result array is the same size as the mod array. - */ -Bignum modmul(Bignum p, Bignum q, Bignum mod) -{ - BignumInt *a, *n, *m, *o; - int mshift; - int pqlen, mlen, rlen, i, j; - Bignum result; - - /* Allocate m of size mlen, copy mod to m */ - /* We use big endian internally */ - mlen = mod[0]; - m = snewn(mlen, BignumInt); - for (j = 0; j < mlen; j++) - m[j] = mod[mod[0] - j]; - - /* Shift m left to make msb bit set */ - for (mshift = 0; mshift < BIGNUM_INT_BITS-1; mshift++) - if ((m[0] << mshift) & BIGNUM_TOP_BIT) - break; - if (mshift) { - for (i = 0; i < mlen - 1; i++) - m[i] = (m[i] << mshift) | (m[i + 1] >> (BIGNUM_INT_BITS - mshift)); - m[mlen - 1] = m[mlen - 1] << mshift; - } - - pqlen = (p[0] > q[0] ? p[0] : q[0]); - - /* Allocate n of size pqlen, copy p to n */ - n = snewn(pqlen, BignumInt); - i = pqlen - p[0]; - for (j = 0; j < i; j++) - n[j] = 0; - for (j = 0; j < (int)p[0]; j++) - n[i + j] = p[p[0] - j]; - - /* Allocate o of size pqlen, copy q to o */ - o = snewn(pqlen, BignumInt); - i = pqlen - q[0]; - for (j = 0; j < i; j++) - o[j] = 0; - for (j = 0; j < (int)q[0]; j++) - o[i + j] = q[q[0] - j]; - - /* Allocate a of size 2*pqlen for result */ - a = snewn(2 * pqlen, BignumInt); - - /* Main computation */ - internal_mul(n, o, a, pqlen); - internal_mod(a, pqlen * 2, m, mlen, NULL, 0); - - /* Fixup result in case the modulus was shifted */ - if (mshift) { - for (i = 2 * pqlen - mlen - 1; i < 2 * pqlen - 1; i++) - a[i] = (a[i] << mshift) | (a[i + 1] >> (BIGNUM_INT_BITS - mshift)); - a[2 * pqlen - 1] = a[2 * pqlen - 1] << mshift; - internal_mod(a, pqlen * 2, m, mlen, NULL, 0); - for (i = 2 * pqlen - 1; i >= 2 * pqlen - mlen; i--) - a[i] = (a[i] >> mshift) | (a[i - 1] << (BIGNUM_INT_BITS - mshift)); - } - - /* Copy result to buffer */ - rlen = (mlen < pqlen * 2 ? mlen : pqlen * 2); - result = newbn(rlen); - for (i = 0; i < rlen; i++) - result[result[0] - i] = a[i + 2 * pqlen - rlen]; - while (result[0] > 1 && result[result[0]] == 0) - result[0]--; - - /* Free temporary arrays */ - for (i = 0; i < 2 * pqlen; i++) - a[i] = 0; - sfree(a); - for (i = 0; i < mlen; i++) - m[i] = 0; - sfree(m); - for (i = 0; i < pqlen; i++) - n[i] = 0; - sfree(n); - for (i = 0; i < pqlen; i++) - o[i] = 0; - sfree(o); - - return result; -} - -/* - * Compute p % mod. - * The most significant word of mod MUST be non-zero. - * We assume that the result array is the same size as the mod array. - * We optionally write out a quotient if `quotient' is non-NULL. - * We can avoid writing out the result if `result' is NULL. - */ -static void bigdivmod(Bignum p, Bignum mod, Bignum result, Bignum quotient) -{ - BignumInt *n, *m; - int mshift; - int plen, mlen, i, j; - - /* Allocate m of size mlen, copy mod to m */ - /* We use big endian internally */ - mlen = mod[0]; - m = snewn(mlen, BignumInt); - for (j = 0; j < mlen; j++) - m[j] = mod[mod[0] - j]; - - /* Shift m left to make msb bit set */ - for (mshift = 0; mshift < BIGNUM_INT_BITS-1; mshift++) - if ((m[0] << mshift) & BIGNUM_TOP_BIT) - break; - if (mshift) { - for (i = 0; i < mlen - 1; i++) - m[i] = (m[i] << mshift) | (m[i + 1] >> (BIGNUM_INT_BITS - mshift)); - m[mlen - 1] = m[mlen - 1] << mshift; - } - - plen = p[0]; - /* Ensure plen > mlen */ - if (plen <= mlen) - plen = mlen + 1; - - /* Allocate n of size plen, copy p to n */ - n = snewn(plen, BignumInt); - for (j = 0; j < plen; j++) - n[j] = 0; - for (j = 1; j <= (int)p[0]; j++) - n[plen - j] = p[j]; - - /* Main computation */ - internal_mod(n, plen, m, mlen, quotient, mshift); - - /* Fixup result in case the modulus was shifted */ - if (mshift) { - for (i = plen - mlen - 1; i < plen - 1; i++) - n[i] = (n[i] << mshift) | (n[i + 1] >> (BIGNUM_INT_BITS - mshift)); - n[plen - 1] = n[plen - 1] << mshift; - internal_mod(n, plen, m, mlen, quotient, 0); - for (i = plen - 1; i >= plen - mlen; i--) - n[i] = (n[i] >> mshift) | (n[i - 1] << (BIGNUM_INT_BITS - mshift)); - } - - /* Copy result to buffer */ - if (result) { - for (i = 1; i <= (int)result[0]; i++) { - int j = plen - i; - result[i] = j >= 0 ? n[j] : 0; - } - } - - /* Free temporary arrays */ - for (i = 0; i < mlen; i++) - m[i] = 0; - sfree(m); - for (i = 0; i < plen; i++) - n[i] = 0; - sfree(n); -} - -/* - * Decrement a number. - */ -void decbn(Bignum bn) -{ - int i = 1; - while (i < (int)bn[0] && bn[i] == 0) - bn[i++] = BIGNUM_INT_MASK; - bn[i]--; -} - -Bignum bignum_from_bytes(const unsigned char *data, int nbytes) -{ - Bignum result; - int w, i; - - w = (nbytes + BIGNUM_INT_BYTES - 1) / BIGNUM_INT_BYTES; /* bytes->words */ - - result = newbn(w); - for (i = 1; i <= w; i++) - result[i] = 0; - for (i = nbytes; i--;) { - unsigned char byte = *data++; - result[1 + i / BIGNUM_INT_BYTES] |= byte << (8*i % BIGNUM_INT_BITS); - } - - while (result[0] > 1 && result[result[0]] == 0) - result[0]--; - return result; -} - -/* - * Read an SSH-1-format bignum from a data buffer. Return the number - * of bytes consumed, or -1 if there wasn't enough data. - */ -int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result) -{ - const unsigned char *p = data; - int i; - int w, b; - - if (len < 2) - return -1; - - w = 0; - for (i = 0; i < 2; i++) - w = (w << 8) + *p++; - b = (w + 7) / 8; /* bits -> bytes */ - - if (len < b+2) - return -1; - - if (!result) /* just return length */ - return b + 2; - - *result = bignum_from_bytes(p, b); - - return p + b - data; -} - -/* - * Return the bit count of a bignum, for SSH-1 encoding. - */ -int bignum_bitcount(Bignum bn) -{ - int bitcount = bn[0] * BIGNUM_INT_BITS - 1; - while (bitcount >= 0 - && (bn[bitcount / BIGNUM_INT_BITS + 1] >> (bitcount % BIGNUM_INT_BITS)) == 0) bitcount--; - return bitcount + 1; -} - -/* - * Return the byte length of a bignum when SSH-1 encoded. - */ -int ssh1_bignum_length(Bignum bn) -{ - return 2 + (bignum_bitcount(bn) + 7) / 8; -} - -/* - * Return the byte length of a bignum when SSH-2 encoded. - */ -int ssh2_bignum_length(Bignum bn) -{ - return 4 + (bignum_bitcount(bn) + 8) / 8; -} - -/* - * Return a byte from a bignum; 0 is least significant, etc. - */ -int bignum_byte(Bignum bn, int i) -{ - if (i >= (int)(BIGNUM_INT_BYTES * bn[0])) - return 0; /* beyond the end */ - else - return (bn[i / BIGNUM_INT_BYTES + 1] >> - ((i % BIGNUM_INT_BYTES)*8)) & 0xFF; -} - -/* - * Return a bit from a bignum; 0 is least significant, etc. - */ -int bignum_bit(Bignum bn, int i) -{ - if (i >= (int)(BIGNUM_INT_BITS * bn[0])) - return 0; /* beyond the end */ - else - return (bn[i / BIGNUM_INT_BITS + 1] >> (i % BIGNUM_INT_BITS)) & 1; -} - -/* - * Set a bit in a bignum; 0 is least significant, etc. - */ -void bignum_set_bit(Bignum bn, int bitnum, int value) -{ - if (bitnum >= (int)(BIGNUM_INT_BITS * bn[0])) - abort(); /* beyond the end */ - else { - int v = bitnum / BIGNUM_INT_BITS + 1; - int mask = 1 << (bitnum % BIGNUM_INT_BITS); - if (value) - bn[v] |= mask; - else - bn[v] &= ~mask; - } -} - -/* - * Write a SSH-1-format bignum into a buffer. It is assumed the - * buffer is big enough. Returns the number of bytes used. - */ -int ssh1_write_bignum(void *data, Bignum bn) -{ - unsigned char *p = data; - int len = ssh1_bignum_length(bn); - int i; - int bitc = bignum_bitcount(bn); - - *p++ = (bitc >> 8) & 0xFF; - *p++ = (bitc) & 0xFF; - for (i = len - 2; i--;) - *p++ = bignum_byte(bn, i); - return len; -} - -/* - * Compare two bignums. Returns like strcmp. - */ -int bignum_cmp(Bignum a, Bignum b) -{ - int amax = a[0], bmax = b[0]; - int i = (amax > bmax ? amax : bmax); - while (i) { - BignumInt aval = (i > amax ? 0 : a[i]); - BignumInt bval = (i > bmax ? 0 : b[i]); - if (aval < bval) - return -1; - if (aval > bval) - return +1; - i--; - } - return 0; -} - -/* - * Right-shift one bignum to form another. - */ -Bignum bignum_rshift(Bignum a, int shift) -{ - Bignum ret; - int i, shiftw, shiftb, shiftbb, bits; - BignumInt ai, ai1; - - bits = bignum_bitcount(a) - shift; - ret = newbn((bits + BIGNUM_INT_BITS - 1) / BIGNUM_INT_BITS); - - if (ret) { - shiftw = shift / BIGNUM_INT_BITS; - shiftb = shift % BIGNUM_INT_BITS; - shiftbb = BIGNUM_INT_BITS - shiftb; - - ai1 = a[shiftw + 1]; - for (i = 1; i <= (int)ret[0]; i++) { - ai = ai1; - ai1 = (i + shiftw + 1 <= (int)a[0] ? a[i + shiftw + 1] : 0); - ret[i] = ((ai >> shiftb) | (ai1 << shiftbb)) & BIGNUM_INT_MASK; - } - } - - return ret; -} - -/* - * Non-modular multiplication and addition. - */ -Bignum bigmuladd(Bignum a, Bignum b, Bignum addend) -{ - int alen = a[0], blen = b[0]; - int mlen = (alen > blen ? alen : blen); - int rlen, i, maxspot; - BignumInt *workspace; - Bignum ret; - - /* mlen space for a, mlen space for b, 2*mlen for result */ - workspace = snewn(mlen * 4, BignumInt); - for (i = 0; i < mlen; i++) { - workspace[0 * mlen + i] = (mlen - i <= (int)a[0] ? a[mlen - i] : 0); - workspace[1 * mlen + i] = (mlen - i <= (int)b[0] ? b[mlen - i] : 0); - } - - internal_mul(workspace + 0 * mlen, workspace + 1 * mlen, - workspace + 2 * mlen, mlen); - - /* now just copy the result back */ - rlen = alen + blen + 1; - if (addend && rlen <= (int)addend[0]) - rlen = addend[0] + 1; - ret = newbn(rlen); - maxspot = 0; - for (i = 1; i <= (int)ret[0]; i++) { - ret[i] = (i <= 2 * mlen ? workspace[4 * mlen - i] : 0); - if (ret[i] != 0) - maxspot = i; - } - ret[0] = maxspot; - - /* now add in the addend, if any */ - if (addend) { - BignumDblInt carry = 0; - for (i = 1; i <= rlen; i++) { - carry += (i <= (int)ret[0] ? ret[i] : 0); - carry += (i <= (int)addend[0] ? addend[i] : 0); - ret[i] = (BignumInt) carry & BIGNUM_INT_MASK; - carry >>= BIGNUM_INT_BITS; - if (ret[i] != 0 && i > maxspot) - maxspot = i; - } - } - ret[0] = maxspot; - - sfree(workspace); - return ret; -} - -/* - * Non-modular multiplication. - */ -Bignum bigmul(Bignum a, Bignum b) -{ - return bigmuladd(a, b, NULL); -} - -/* - * Create a bignum which is the bitmask covering another one. That - * is, the smallest integer which is >= N and is also one less than - * a power of two. - */ -Bignum bignum_bitmask(Bignum n) -{ - Bignum ret = copybn(n); - int i; - BignumInt j; - - i = ret[0]; - while (n[i] == 0 && i > 0) - i--; - if (i <= 0) - return ret; /* input was zero */ - j = 1; - while (j < n[i]) - j = 2 * j + 1; - ret[i] = j; - while (--i > 0) - ret[i] = BIGNUM_INT_MASK; - return ret; -} - -/* - * Convert a (max 32-bit) long into a bignum. - */ -Bignum bignum_from_long(unsigned long nn) -{ - Bignum ret; - BignumDblInt n = nn; - - ret = newbn(3); - ret[1] = (BignumInt)(n & BIGNUM_INT_MASK); - ret[2] = (BignumInt)((n >> BIGNUM_INT_BITS) & BIGNUM_INT_MASK); - ret[3] = 0; - ret[0] = (ret[2] ? 2 : 1); - return ret; -} - -/* - * Add a long to a bignum. - */ -Bignum bignum_add_long(Bignum number, unsigned long addendx) -{ - Bignum ret = newbn(number[0] + 1); - int i, maxspot = 0; - BignumDblInt carry = 0, addend = addendx; - - for (i = 1; i <= (int)ret[0]; i++) { - carry += addend & BIGNUM_INT_MASK; - carry += (i <= (int)number[0] ? number[i] : 0); - addend >>= BIGNUM_INT_BITS; - ret[i] = (BignumInt) carry & BIGNUM_INT_MASK; - carry >>= BIGNUM_INT_BITS; - if (ret[i] != 0) - maxspot = i; - } - ret[0] = maxspot; - return ret; -} - -/* - * Compute the residue of a bignum, modulo a (max 16-bit) short. - */ -unsigned short bignum_mod_short(Bignum number, unsigned short modulus) -{ - BignumDblInt mod, r; - int i; - - r = 0; - mod = modulus; - for (i = number[0]; i > 0; i--) - r = (r * (BIGNUM_TOP_BIT % mod) * 2 + number[i] % mod) % mod; - return (unsigned short) r; -} - -#ifdef DEBUG -void diagbn(char *prefix, Bignum md) -{ - int i, nibbles, morenibbles; - static const char hex[] = "0123456789ABCDEF"; - - debug(("%s0x", prefix ? prefix : "")); - - nibbles = (3 + bignum_bitcount(md)) / 4; - if (nibbles < 1) - nibbles = 1; - morenibbles = 4 * md[0] - nibbles; - for (i = 0; i < morenibbles; i++) - debug(("-")); - for (i = nibbles; i--;) - debug(("%c", - hex[(bignum_byte(md, i / 2) >> (4 * (i % 2))) & 0xF])); - - if (prefix) - debug(("\n")); -} -#endif - -/* - * Simple division. - */ -Bignum bigdiv(Bignum a, Bignum b) -{ - Bignum q = newbn(a[0]); - bigdivmod(a, b, NULL, q); - return q; -} - -/* - * Simple remainder. - */ -Bignum bigmod(Bignum a, Bignum b) -{ - Bignum r = newbn(b[0]); - bigdivmod(a, b, r, NULL); - return r; -} - -/* - * Greatest common divisor. - */ -Bignum biggcd(Bignum av, Bignum bv) -{ - Bignum a = copybn(av); - Bignum b = copybn(bv); - - while (bignum_cmp(b, Zero) != 0) { - Bignum t = newbn(b[0]); - bigdivmod(a, b, t, NULL); - while (t[0] > 1 && t[t[0]] == 0) - t[0]--; - freebn(a); - a = b; - b = t; - } - - freebn(b); - return a; -} - -/* - * Modular inverse, using Euclid's extended algorithm. - */ -Bignum modinv(Bignum number, Bignum modulus) -{ - Bignum a = copybn(modulus); - Bignum b = copybn(number); - Bignum xp = copybn(Zero); - Bignum x = copybn(One); - int sign = +1; - - while (bignum_cmp(b, One) != 0) { - Bignum t = newbn(b[0]); - Bignum q = newbn(a[0]); - bigdivmod(a, b, t, q); - while (t[0] > 1 && t[t[0]] == 0) - t[0]--; - freebn(a); - a = b; - b = t; - t = xp; - xp = x; - x = bigmuladd(q, xp, t); - sign = -sign; - freebn(t); - freebn(q); - } - - freebn(b); - freebn(a); - freebn(xp); - - /* now we know that sign * x == 1, and that x < modulus */ - if (sign < 0) { - /* set a new x to be modulus - x */ - Bignum newx = newbn(modulus[0]); - BignumInt carry = 0; - int maxspot = 1; - int i; - - for (i = 1; i <= (int)newx[0]; i++) { - BignumInt aword = (i <= (int)modulus[0] ? modulus[i] : 0); - BignumInt bword = (i <= (int)x[0] ? x[i] : 0); - newx[i] = aword - bword - carry; - bword = ~bword; - carry = carry ? (newx[i] >= bword) : (newx[i] > bword); - if (newx[i] != 0) - maxspot = i; - } - newx[0] = maxspot; - freebn(x); - x = newx; - } - - /* and return. */ - return x; -} - -/* - * Render a bignum into decimal. Return a malloced string holding - * the decimal representation. - */ -char *bignum_decimal(Bignum x) -{ - int ndigits, ndigit; - int i, iszero; - BignumDblInt carry; - char *ret; - BignumInt *workspace; - - /* - * First, estimate the number of digits. Since log(10)/log(2) - * is just greater than 93/28 (the joys of continued fraction - * approximations...) we know that for every 93 bits, we need - * at most 28 digits. This will tell us how much to malloc. - * - * Formally: if x has i bits, that means x is strictly less - * than 2^i. Since 2 is less than 10^(28/93), this is less than - * 10^(28i/93). We need an integer power of ten, so we must - * round up (rounding down might make it less than x again). - * Therefore if we multiply the bit count by 28/93, rounding - * up, we will have enough digits. - * - * i=0 (i.e., x=0) is an irritating special case. - */ - i = bignum_bitcount(x); - if (!i) - ndigits = 1; /* x = 0 */ - else - ndigits = (28 * i + 92) / 93; /* multiply by 28/93 and round up */ - ndigits++; /* allow for trailing \0 */ - ret = snewn(ndigits, char); - - /* - * Now allocate some workspace to hold the binary form as we - * repeatedly divide it by ten. Initialise this to the - * big-endian form of the number. - */ - workspace = snewn(x[0], BignumInt); - for (i = 0; i < (int)x[0]; i++) - workspace[i] = x[x[0] - i]; - - /* - * Next, write the decimal number starting with the last digit. - * We use ordinary short division, dividing 10 into the - * workspace. - */ - ndigit = ndigits - 1; - ret[ndigit] = '\0'; - do { - iszero = 1; - carry = 0; - for (i = 0; i < (int)x[0]; i++) { - carry = (carry << BIGNUM_INT_BITS) + workspace[i]; - workspace[i] = (BignumInt) (carry / 10); - if (workspace[i]) - iszero = 0; - carry %= 10; - } - ret[--ndigit] = (char) (carry + '0'); - } while (!iszero); - - /* - * There's a chance we've fallen short of the start of the - * string. Correct if so. - */ - if (ndigit > 0) - memmove(ret, ret + ndigit, ndigits - ndigit); - - /* - * Done. - */ - sfree(workspace); - return ret; -} diff --git a/tools/plink/sshcrc.c b/tools/plink/sshcrc.c deleted file mode 100644 index 0a72a31ec..000000000 --- a/tools/plink/sshcrc.c +++ /dev/null @@ -1,230 +0,0 @@ -/* - * CRC32 implementation. - * - * The basic concept of a CRC is that you treat your bit-string - * abcdefg... as a ludicrously long polynomial M=a+bx+cx^2+dx^3+... - * over Z[2]. You then take a modulus polynomial P, and compute the - * remainder of M on division by P. Thus, an erroneous message N - * will only have the same CRC if the difference E = M-N is an - * exact multiple of P. (Note that as we are working over Z[2], M-N - * = N-M = M+N; but that's not very important.) - * - * What makes the CRC good is choosing P to have good properties: - * - * - If its first and last terms are both nonzero then it cannot - * be a factor of any single term x^i. Therefore if M and N - * differ by exactly one bit their CRCs will guaranteeably - * be distinct. - * - * - If it has a prime (irreducible) factor with three terms then - * it cannot divide a polynomial of the form x^i(1+x^j). - * Therefore if M and N differ by exactly _two_ bits they will - * have different CRCs. - * - * - If it has a factor (x+1) then it cannot divide a polynomial - * with an odd number of terms. Therefore if M and N differ by - * _any odd_ number of bits they will have different CRCs. - * - * - If the error term E is of the form x^i*B(x) where B(x) has - * order less than P (i.e. a short _burst_ of errors) then P - * cannot divide E (since no polynomial can divide a shorter - * one), so any such error burst will be spotted. - * - * The CRC32 standard polynomial is - * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x^1+x^0 - * - * In fact, we don't compute M mod P; we compute M*x^32 mod P. - * - * The concrete implementation of the CRC is this: we maintain at - * all times a 32-bit word which is the current remainder of the - * polynomial mod P. Whenever we receive an extra bit, we multiply - * the existing remainder by x, add (XOR) the x^32 term thus - * generated to the new x^32 term caused by the incoming bit, and - * remove the resulting combined x^32 term if present by replacing - * it with (P-x^32). - * - * Bit 0 of the word is the x^31 term and bit 31 is the x^0 term. - * Thus, multiplying by x means shifting right. So the actual - * algorithm goes like this: - * - * x32term = (crcword & 1) ^ newbit; - * crcword = (crcword >> 1) ^ (x32term * 0xEDB88320); - * - * In practice, we pre-compute what will happen to crcword on any - * given sequence of eight incoming bits, and store that in a table - * which we then use at run-time to do the job: - * - * outgoingplusnew = (crcword & 0xFF) ^ newbyte; - * crcword = (crcword >> 8) ^ table[outgoingplusnew]; - * - * where table[outgoingplusnew] is computed by setting crcword=0 - * and then iterating the first code fragment eight times (taking - * the incoming byte low bit first). - * - * Note that all shifts are rightward and thus no assumption is - * made about exact word length! (Although word length must be at - * _least_ 32 bits, but ANSI C guarantees this for `unsigned long' - * anyway.) - */ - -#include - -#include "ssh.h" - -/* ---------------------------------------------------------------------- - * Multi-function module. Can be compiled three ways. - * - * - Compile with no special #defines. Will generate a table - * that's already initialised at compile time, and one function - * crc32_compute(buf,len) that uses it. Normal usage. - * - * - Compile with INITFUNC defined. Will generate an uninitialised - * array as the table, and as well as crc32_compute(buf,len) it - * will also generate void crc32_init(void) which sets up the - * table at run time. Useful if binary size is important. - * - * - Compile with GENPROGRAM defined. Will create a standalone - * program that does the initialisation and outputs the table as - * C code. - */ - -#define POLY (0xEDB88320L) - -#ifdef GENPROGRAM -#define INITFUNC /* the gen program needs the init func :-) */ -#endif - -#ifdef INITFUNC - -/* - * This variant of the code generates the table at run-time from an - * init function. - */ -static unsigned long crc32_table[256]; - -void crc32_init(void) -{ - unsigned long crcword; - int i; - - for (i = 0; i < 256; i++) { - unsigned long newbyte, x32term; - int j; - crcword = 0; - newbyte = i; - for (j = 0; j < 8; j++) { - x32term = (crcword ^ newbyte) & 1; - crcword = (crcword >> 1) ^ (x32term * POLY); - newbyte >>= 1; - } - crc32_table[i] = crcword; - } -} - -#else - -/* - * This variant of the code has the data already prepared. - */ -static const unsigned long crc32_table[256] = { - 0x00000000L, 0x77073096L, 0xEE0E612CL, 0x990951BAL, - 0x076DC419L, 0x706AF48FL, 0xE963A535L, 0x9E6495A3L, - 0x0EDB8832L, 0x79DCB8A4L, 0xE0D5E91EL, 0x97D2D988L, - 0x09B64C2BL, 0x7EB17CBDL, 0xE7B82D07L, 0x90BF1D91L, - 0x1DB71064L, 0x6AB020F2L, 0xF3B97148L, 0x84BE41DEL, - 0x1ADAD47DL, 0x6DDDE4EBL, 0xF4D4B551L, 0x83D385C7L, - 0x136C9856L, 0x646BA8C0L, 0xFD62F97AL, 0x8A65C9ECL, - 0x14015C4FL, 0x63066CD9L, 0xFA0F3D63L, 0x8D080DF5L, - 0x3B6E20C8L, 0x4C69105EL, 0xD56041E4L, 0xA2677172L, - 0x3C03E4D1L, 0x4B04D447L, 0xD20D85FDL, 0xA50AB56BL, - 0x35B5A8FAL, 0x42B2986CL, 0xDBBBC9D6L, 0xACBCF940L, - 0x32D86CE3L, 0x45DF5C75L, 0xDCD60DCFL, 0xABD13D59L, - 0x26D930ACL, 0x51DE003AL, 0xC8D75180L, 0xBFD06116L, - 0x21B4F4B5L, 0x56B3C423L, 0xCFBA9599L, 0xB8BDA50FL, - 0x2802B89EL, 0x5F058808L, 0xC60CD9B2L, 0xB10BE924L, - 0x2F6F7C87L, 0x58684C11L, 0xC1611DABL, 0xB6662D3DL, - 0x76DC4190L, 0x01DB7106L, 0x98D220BCL, 0xEFD5102AL, - 0x71B18589L, 0x06B6B51FL, 0x9FBFE4A5L, 0xE8B8D433L, - 0x7807C9A2L, 0x0F00F934L, 0x9609A88EL, 0xE10E9818L, - 0x7F6A0DBBL, 0x086D3D2DL, 0x91646C97L, 0xE6635C01L, - 0x6B6B51F4L, 0x1C6C6162L, 0x856530D8L, 0xF262004EL, - 0x6C0695EDL, 0x1B01A57BL, 0x8208F4C1L, 0xF50FC457L, - 0x65B0D9C6L, 0x12B7E950L, 0x8BBEB8EAL, 0xFCB9887CL, - 0x62DD1DDFL, 0x15DA2D49L, 0x8CD37CF3L, 0xFBD44C65L, - 0x4DB26158L, 0x3AB551CEL, 0xA3BC0074L, 0xD4BB30E2L, - 0x4ADFA541L, 0x3DD895D7L, 0xA4D1C46DL, 0xD3D6F4FBL, - 0x4369E96AL, 0x346ED9FCL, 0xAD678846L, 0xDA60B8D0L, - 0x44042D73L, 0x33031DE5L, 0xAA0A4C5FL, 0xDD0D7CC9L, - 0x5005713CL, 0x270241AAL, 0xBE0B1010L, 0xC90C2086L, - 0x5768B525L, 0x206F85B3L, 0xB966D409L, 0xCE61E49FL, - 0x5EDEF90EL, 0x29D9C998L, 0xB0D09822L, 0xC7D7A8B4L, - 0x59B33D17L, 0x2EB40D81L, 0xB7BD5C3BL, 0xC0BA6CADL, - 0xEDB88320L, 0x9ABFB3B6L, 0x03B6E20CL, 0x74B1D29AL, - 0xEAD54739L, 0x9DD277AFL, 0x04DB2615L, 0x73DC1683L, - 0xE3630B12L, 0x94643B84L, 0x0D6D6A3EL, 0x7A6A5AA8L, - 0xE40ECF0BL, 0x9309FF9DL, 0x0A00AE27L, 0x7D079EB1L, - 0xF00F9344L, 0x8708A3D2L, 0x1E01F268L, 0x6906C2FEL, - 0xF762575DL, 0x806567CBL, 0x196C3671L, 0x6E6B06E7L, - 0xFED41B76L, 0x89D32BE0L, 0x10DA7A5AL, 0x67DD4ACCL, - 0xF9B9DF6FL, 0x8EBEEFF9L, 0x17B7BE43L, 0x60B08ED5L, - 0xD6D6A3E8L, 0xA1D1937EL, 0x38D8C2C4L, 0x4FDFF252L, - 0xD1BB67F1L, 0xA6BC5767L, 0x3FB506DDL, 0x48B2364BL, - 0xD80D2BDAL, 0xAF0A1B4CL, 0x36034AF6L, 0x41047A60L, - 0xDF60EFC3L, 0xA867DF55L, 0x316E8EEFL, 0x4669BE79L, - 0xCB61B38CL, 0xBC66831AL, 0x256FD2A0L, 0x5268E236L, - 0xCC0C7795L, 0xBB0B4703L, 0x220216B9L, 0x5505262FL, - 0xC5BA3BBEL, 0xB2BD0B28L, 0x2BB45A92L, 0x5CB36A04L, - 0xC2D7FFA7L, 0xB5D0CF31L, 0x2CD99E8BL, 0x5BDEAE1DL, - 0x9B64C2B0L, 0xEC63F226L, 0x756AA39CL, 0x026D930AL, - 0x9C0906A9L, 0xEB0E363FL, 0x72076785L, 0x05005713L, - 0x95BF4A82L, 0xE2B87A14L, 0x7BB12BAEL, 0x0CB61B38L, - 0x92D28E9BL, 0xE5D5BE0DL, 0x7CDCEFB7L, 0x0BDBDF21L, - 0x86D3D2D4L, 0xF1D4E242L, 0x68DDB3F8L, 0x1FDA836EL, - 0x81BE16CDL, 0xF6B9265BL, 0x6FB077E1L, 0x18B74777L, - 0x88085AE6L, 0xFF0F6A70L, 0x66063BCAL, 0x11010B5CL, - 0x8F659EFFL, 0xF862AE69L, 0x616BFFD3L, 0x166CCF45L, - 0xA00AE278L, 0xD70DD2EEL, 0x4E048354L, 0x3903B3C2L, - 0xA7672661L, 0xD06016F7L, 0x4969474DL, 0x3E6E77DBL, - 0xAED16A4AL, 0xD9D65ADCL, 0x40DF0B66L, 0x37D83BF0L, - 0xA9BCAE53L, 0xDEBB9EC5L, 0x47B2CF7FL, 0x30B5FFE9L, - 0xBDBDF21CL, 0xCABAC28AL, 0x53B39330L, 0x24B4A3A6L, - 0xBAD03605L, 0xCDD70693L, 0x54DE5729L, 0x23D967BFL, - 0xB3667A2EL, 0xC4614AB8L, 0x5D681B02L, 0x2A6F2B94L, - 0xB40BBE37L, 0xC30C8EA1L, 0x5A05DF1BL, 0x2D02EF8DL -}; - -#endif - -#ifdef GENPROGRAM -int main(void) -{ - unsigned long crcword; - int i; - - crc32_init(); - for (i = 0; i < 256; i++) { - printf("%s0x%08XL%s", - (i % 4 == 0 ? " " : " "), - crc32_table[i], - (i % 4 == 3 ? (i == 255 ? "\n" : ",\n") : ",")); - } - - return 0; -} -#endif - -unsigned long crc32_update(unsigned long crcword, const void *buf, size_t len) -{ - const unsigned char *p = (const unsigned char *) buf; - while (len--) { - unsigned long newbyte = *p++; - newbyte ^= crcword & 0xFFL; - crcword = (crcword >> 8) ^ crc32_table[newbyte]; - } - return crcword; -} - -unsigned long crc32_compute(const void *buf, size_t len) -{ - return crc32_update(0L, buf, len); -} diff --git a/tools/plink/sshcrcda.c b/tools/plink/sshcrcda.c deleted file mode 100644 index c2cf705b2..000000000 --- a/tools/plink/sshcrcda.c +++ /dev/null @@ -1,172 +0,0 @@ -/* $OpenBSD: deattack.c,v 1.14 2001/06/23 15:12:18 itojun Exp $ */ - -/* - * Cryptographic attack detector for ssh - source code - * - * Copyright (c) 1998 CORE SDI S.A., Buenos Aires, Argentina. - * - * All rights reserved. Redistribution and use in source and binary - * forms, with or without modification, are permitted provided that - * this copyright notice is retained. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES ARE DISCLAIMED. IN NO EVENT SHALL CORE SDI S.A. BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY OR - * CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OR MISUSE OF THIS - * SOFTWARE. - * - * Ariel Futoransky - * - * - * Modified for use in PuTTY by Simon Tatham - */ - -#include -#include "misc.h" -#include "ssh.h" - -typedef unsigned char uchar; -typedef unsigned short uint16; - -/* SSH Constants */ -#define SSH_MAXBLOCKS (32 * 1024) -#define SSH_BLOCKSIZE (8) - -/* Hashing constants */ -#define HASH_MINSIZE (8 * 1024) -#define HASH_ENTRYSIZE (sizeof(uint16)) -#define HASH_FACTOR(x) ((x)*3/2) -#define HASH_UNUSEDCHAR (0xff) -#define HASH_UNUSED (0xffff) -#define HASH_IV (0xfffe) - -#define HASH_MINBLOCKS (7*SSH_BLOCKSIZE) - -/* Hash function (Input keys are cipher results) */ -#define HASH(x) GET_32BIT_MSB_FIRST(x) - -#define CMP(a, b) (memcmp(a, b, SSH_BLOCKSIZE)) - -uchar ONE[4] = { 1, 0, 0, 0 }; -uchar ZERO[4] = { 0, 0, 0, 0 }; - -struct crcda_ctx { - uint16 *h; - uint32 n; -}; - -void *crcda_make_context(void) -{ - struct crcda_ctx *ret = snew(struct crcda_ctx); - ret->h = NULL; - ret->n = HASH_MINSIZE / HASH_ENTRYSIZE; - return ret; -} - -void crcda_free_context(void *handle) -{ - struct crcda_ctx *ctx = (struct crcda_ctx *)handle; - if (ctx) { - sfree(ctx->h); - ctx->h = NULL; - sfree(ctx); - } -} - -static void crc_update(uint32 *a, void *b) -{ - *a = crc32_update(*a, b, 4); -} - -/* detect if a block is used in a particular pattern */ -static int check_crc(uchar *S, uchar *buf, uint32 len, uchar *IV) -{ - uint32 crc; - uchar *c; - - crc = 0; - if (IV && !CMP(S, IV)) { - crc_update(&crc, ONE); - crc_update(&crc, ZERO); - } - for (c = buf; c < buf + len; c += SSH_BLOCKSIZE) { - if (!CMP(S, c)) { - crc_update(&crc, ONE); - crc_update(&crc, ZERO); - } else { - crc_update(&crc, ZERO); - crc_update(&crc, ZERO); - } - } - return (crc == 0); -} - -/* Detect a crc32 compensation attack on a packet */ -int detect_attack(void *handle, uchar *buf, uint32 len, uchar *IV) -{ - struct crcda_ctx *ctx = (struct crcda_ctx *)handle; - register uint32 i, j; - uint32 l; - register uchar *c; - uchar *d; - - assert(!(len > (SSH_MAXBLOCKS * SSH_BLOCKSIZE) || - len % SSH_BLOCKSIZE != 0)); - for (l = ctx->n; l < HASH_FACTOR(len / SSH_BLOCKSIZE); l = l << 2) - ; - - if (ctx->h == NULL) { - ctx->n = l; - ctx->h = snewn(ctx->n, uint16); - } else { - if (l > ctx->n) { - ctx->n = l; - ctx->h = sresize(ctx->h, ctx->n, uint16); - } - } - - if (len <= HASH_MINBLOCKS) { - for (c = buf; c < buf + len; c += SSH_BLOCKSIZE) { - if (IV && (!CMP(c, IV))) { - if ((check_crc(c, buf, len, IV))) - return 1; /* attack detected */ - else - break; - } - for (d = buf; d < c; d += SSH_BLOCKSIZE) { - if (!CMP(c, d)) { - if ((check_crc(c, buf, len, IV))) - return 1; /* attack detected */ - else - break; - } - } - } - return 0; /* ok */ - } - memset(ctx->h, HASH_UNUSEDCHAR, ctx->n * HASH_ENTRYSIZE); - - if (IV) - ctx->h[HASH(IV) & (ctx->n - 1)] = HASH_IV; - - for (c = buf, j = 0; c < (buf + len); c += SSH_BLOCKSIZE, j++) { - for (i = HASH(c) & (ctx->n - 1); ctx->h[i] != HASH_UNUSED; - i = (i + 1) & (ctx->n - 1)) { - if (ctx->h[i] == HASH_IV) { - if (!CMP(c, IV)) { - if (check_crc(c, buf, len, IV)) - return 1; /* attack detected */ - else - break; - } - } else if (!CMP(c, buf + ctx->h[i] * SSH_BLOCKSIZE)) { - if (check_crc(c, buf, len, IV)) - return 1; /* attack detected */ - else - break; - } - } - ctx->h[i] = j; - } - return 0; /* ok */ -} diff --git a/tools/plink/sshdes.c b/tools/plink/sshdes.c deleted file mode 100644 index 0beb273ce..000000000 --- a/tools/plink/sshdes.c +++ /dev/null @@ -1,1031 +0,0 @@ -#include -#include "ssh.h" - - -/* des.c - implementation of DES - */ - -/* - * Description of DES - * ------------------ - * - * Unlike the description in FIPS 46, I'm going to use _sensible_ indices: - * bits in an n-bit word are numbered from 0 at the LSB to n-1 at the MSB. - * And S-boxes are indexed by six consecutive bits, not by the outer two - * followed by the middle four. - * - * The DES encryption routine requires a 64-bit input, and a key schedule K - * containing 16 48-bit elements. - * - * First the input is permuted by the initial permutation IP. - * Then the input is split into 32-bit words L and R. (L is the MSW.) - * Next, 16 rounds. In each round: - * (L, R) <- (R, L xor f(R, K[i])) - * Then the pre-output words L and R are swapped. - * Then L and R are glued back together into a 64-bit word. (L is the MSW, - * again, but since we just swapped them, the MSW is the R that came out - * of the last round.) - * The 64-bit output block is permuted by the inverse of IP and returned. - * - * Decryption is identical except that the elements of K are used in the - * opposite order. (This wouldn't work if that word swap didn't happen.) - * - * The function f, used in each round, accepts a 32-bit word R and a - * 48-bit key block K. It produces a 32-bit output. - * - * First R is expanded to 48 bits using the bit-selection function E. - * The resulting 48-bit block is XORed with the key block K to produce - * a 48-bit block X. - * This block X is split into eight groups of 6 bits. Each group of 6 - * bits is then looked up in one of the eight S-boxes to convert - * it to 4 bits. These eight groups of 4 bits are glued back - * together to produce a 32-bit preoutput block. - * The preoutput block is permuted using the permutation P and returned. - * - * Key setup maps a 64-bit key word into a 16x48-bit key schedule. Although - * the approved input format for the key is a 64-bit word, eight of the - * bits are discarded, so the actual quantity of key used is 56 bits. - * - * First the input key is converted to two 28-bit words C and D using - * the bit-selection function PC1. - * Then 16 rounds of key setup occur. In each round, C and D are each - * rotated left by either 1 or 2 bits (depending on which round), and - * then converted into a key schedule element using the bit-selection - * function PC2. - * - * That's the actual algorithm. Now for the tedious details: all those - * painful permutations and lookup tables. - * - * IP is a 64-to-64 bit permutation. Its output contains the following - * bits of its input (listed in order MSB to LSB of output). - * - * 6 14 22 30 38 46 54 62 4 12 20 28 36 44 52 60 - * 2 10 18 26 34 42 50 58 0 8 16 24 32 40 48 56 - * 7 15 23 31 39 47 55 63 5 13 21 29 37 45 53 61 - * 3 11 19 27 35 43 51 59 1 9 17 25 33 41 49 57 - * - * E is a 32-to-48 bit selection function. Its output contains the following - * bits of its input (listed in order MSB to LSB of output). - * - * 0 31 30 29 28 27 28 27 26 25 24 23 24 23 22 21 20 19 20 19 18 17 16 15 - * 16 15 14 13 12 11 12 11 10 9 8 7 8 7 6 5 4 3 4 3 2 1 0 31 - * - * The S-boxes are arbitrary table-lookups each mapping a 6-bit input to a - * 4-bit output. In other words, each S-box is an array[64] of 4-bit numbers. - * The S-boxes are listed below. The first S-box listed is applied to the - * most significant six bits of the block X; the last one is applied to the - * least significant. - * - * 14 0 4 15 13 7 1 4 2 14 15 2 11 13 8 1 - * 3 10 10 6 6 12 12 11 5 9 9 5 0 3 7 8 - * 4 15 1 12 14 8 8 2 13 4 6 9 2 1 11 7 - * 15 5 12 11 9 3 7 14 3 10 10 0 5 6 0 13 - * - * 15 3 1 13 8 4 14 7 6 15 11 2 3 8 4 14 - * 9 12 7 0 2 1 13 10 12 6 0 9 5 11 10 5 - * 0 13 14 8 7 10 11 1 10 3 4 15 13 4 1 2 - * 5 11 8 6 12 7 6 12 9 0 3 5 2 14 15 9 - * - * 10 13 0 7 9 0 14 9 6 3 3 4 15 6 5 10 - * 1 2 13 8 12 5 7 14 11 12 4 11 2 15 8 1 - * 13 1 6 10 4 13 9 0 8 6 15 9 3 8 0 7 - * 11 4 1 15 2 14 12 3 5 11 10 5 14 2 7 12 - * - * 7 13 13 8 14 11 3 5 0 6 6 15 9 0 10 3 - * 1 4 2 7 8 2 5 12 11 1 12 10 4 14 15 9 - * 10 3 6 15 9 0 0 6 12 10 11 1 7 13 13 8 - * 15 9 1 4 3 5 14 11 5 12 2 7 8 2 4 14 - * - * 2 14 12 11 4 2 1 12 7 4 10 7 11 13 6 1 - * 8 5 5 0 3 15 15 10 13 3 0 9 14 8 9 6 - * 4 11 2 8 1 12 11 7 10 1 13 14 7 2 8 13 - * 15 6 9 15 12 0 5 9 6 10 3 4 0 5 14 3 - * - * 12 10 1 15 10 4 15 2 9 7 2 12 6 9 8 5 - * 0 6 13 1 3 13 4 14 14 0 7 11 5 3 11 8 - * 9 4 14 3 15 2 5 12 2 9 8 5 12 15 3 10 - * 7 11 0 14 4 1 10 7 1 6 13 0 11 8 6 13 - * - * 4 13 11 0 2 11 14 7 15 4 0 9 8 1 13 10 - * 3 14 12 3 9 5 7 12 5 2 10 15 6 8 1 6 - * 1 6 4 11 11 13 13 8 12 1 3 4 7 10 14 7 - * 10 9 15 5 6 0 8 15 0 14 5 2 9 3 2 12 - * - * 13 1 2 15 8 13 4 8 6 10 15 3 11 7 1 4 - * 10 12 9 5 3 6 14 11 5 0 0 14 12 9 7 2 - * 7 2 11 1 4 14 1 7 9 4 12 10 14 8 2 13 - * 0 15 6 12 10 9 13 0 15 3 3 5 5 6 8 11 - * - * P is a 32-to-32 bit permutation. Its output contains the following - * bits of its input (listed in order MSB to LSB of output). - * - * 16 25 12 11 3 20 4 15 31 17 9 6 27 14 1 22 - * 30 24 8 18 0 5 29 23 13 19 2 26 10 21 28 7 - * - * PC1 is a 64-to-56 bit selection function. Its output is in two words, - * C and D. The word C contains the following bits of its input (listed - * in order MSB to LSB of output). - * - * 7 15 23 31 39 47 55 63 6 14 22 30 38 46 - * 54 62 5 13 21 29 37 45 53 61 4 12 20 28 - * - * And the word D contains these bits. - * - * 1 9 17 25 33 41 49 57 2 10 18 26 34 42 - * 50 58 3 11 19 27 35 43 51 59 36 44 52 60 - * - * PC2 is a 56-to-48 bit selection function. Its input is in two words, - * C and D. These are treated as one 56-bit word (with C more significant, - * so that bits 55 to 28 of the word are bits 27 to 0 of C, and bits 27 to - * 0 of the word are bits 27 to 0 of D). The output contains the following - * bits of this 56-bit input word (listed in order MSB to LSB of output). - * - * 42 39 45 32 55 51 53 28 41 50 35 46 33 37 44 52 30 48 40 49 29 36 43 54 - * 15 4 25 19 9 1 26 16 5 11 23 8 12 7 17 0 22 3 10 14 6 20 27 24 - */ - -/* - * Implementation details - * ---------------------- - * - * If you look at the code in this module, you'll find it looks - * nothing _like_ the above algorithm. Here I explain the - * differences... - * - * Key setup has not been heavily optimised here. We are not - * concerned with key agility: we aren't codebreakers. We don't - * mind a little delay (and it really is a little one; it may be a - * factor of five or so slower than it could be but it's still not - * an appreciable length of time) while setting up. The only tweaks - * in the key setup are ones which change the format of the key - * schedule to speed up the actual encryption. I'll describe those - * below. - * - * The first and most obvious optimisation is the S-boxes. Since - * each S-box always targets the same four bits in the final 32-bit - * word, so the output from (for example) S-box 0 must always be - * shifted left 28 bits, we can store the already-shifted outputs - * in the lookup tables. This reduces lookup-and-shift to lookup, - * so the S-box step is now just a question of ORing together eight - * table lookups. - * - * The permutation P is just a bit order change; it's invariant - * with respect to OR, in that P(x)|P(y) = P(x|y). Therefore, we - * can apply P to every entry of the S-box tables and then we don't - * have to do it in the code of f(). This yields a set of tables - * which might be called SP-boxes. - * - * The bit-selection function E is our next target. Note that E is - * immediately followed by the operation of splitting into 6-bit - * chunks. Examining the 6-bit chunks coming out of E we notice - * they're all contiguous within the word (speaking cyclically - - * the end two wrap round); so we can extract those bit strings - * individually rather than explicitly running E. This would yield - * code such as - * - * y |= SPboxes[0][ (rotl(R, 5) ^ top6bitsofK) & 0x3F ]; - * t |= SPboxes[1][ (rotl(R,11) ^ next6bitsofK) & 0x3F ]; - * - * and so on; and the key schedule preparation would have to - * provide each 6-bit chunk separately. - * - * Really we'd like to XOR in the key schedule element before - * looking up bit strings in R. This we can't do, naively, because - * the 6-bit strings we want overlap. But look at the strings: - * - * 3322222222221111111111 - * bit 10987654321098765432109876543210 - * - * box0 XXXXX X - * box1 XXXXXX - * box2 XXXXXX - * box3 XXXXXX - * box4 XXXXXX - * box5 XXXXXX - * box6 XXXXXX - * box7 X XXXXX - * - * The bit strings we need to XOR in for boxes 0, 2, 4 and 6 don't - * overlap with each other. Neither do the ones for boxes 1, 3, 5 - * and 7. So we could provide the key schedule in the form of two - * words that we can separately XOR into R, and then every S-box - * index is available as a (cyclically) contiguous 6-bit substring - * of one or the other of the results. - * - * The comments in Eric Young's libdes implementation point out - * that two of these bit strings require a rotation (rather than a - * simple shift) to extract. It's unavoidable that at least _one_ - * must do; but we can actually run the whole inner algorithm (all - * 16 rounds) rotated one bit to the left, so that what the `real' - * DES description sees as L=0x80000001 we see as L=0x00000003. - * This requires rotating all our SP-box entries one bit to the - * left, and rotating each word of the key schedule elements one to - * the left, and rotating L and R one bit left just after IP and - * one bit right again just before FP. And in each round we convert - * a rotate into a shift, so we've saved a few per cent. - * - * That's about it for the inner loop; the SP-box tables as listed - * below are what I've described here (the original S value, - * shifted to its final place in the input to P, run through P, and - * then rotated one bit left). All that remains is to optimise the - * initial permutation IP. - * - * IP is not an arbitrary permutation. It has the nice property - * that if you take any bit number, write it in binary (6 bits), - * permute those 6 bits and invert some of them, you get the final - * position of that bit. Specifically, the bit whose initial - * position is given (in binary) as fedcba ends up in position - * AcbFED (where a capital letter denotes the inverse of a bit). - * - * We have the 64-bit data in two 32-bit words L and R, where bits - * in L are those with f=1 and bits in R are those with f=0. We - * note that we can do a simple transformation: suppose we exchange - * the bits with f=1,c=0 and the bits with f=0,c=1. This will cause - * the bit fedcba to be in position cedfba - we've `swapped' bits c - * and f in the position of each bit! - * - * Better still, this transformation is easy. In the example above, - * bits in L with c=0 are bits 0x0F0F0F0F, and those in R with c=1 - * are 0xF0F0F0F0. So we can do - * - * difference = ((R >> 4) ^ L) & 0x0F0F0F0F - * R ^= (difference << 4) - * L ^= difference - * - * to perform the swap. Let's denote this by bitswap(4,0x0F0F0F0F). - * Also, we can invert the bit at the top just by exchanging L and - * R. So in a few swaps and a few of these bit operations we can - * do: - * - * Initially the position of bit fedcba is fedcba - * Swap L with R to make it Fedcba - * Perform bitswap( 4,0x0F0F0F0F) to make it cedFba - * Perform bitswap(16,0x0000FFFF) to make it ecdFba - * Swap L with R to make it EcdFba - * Perform bitswap( 2,0x33333333) to make it bcdFEa - * Perform bitswap( 8,0x00FF00FF) to make it dcbFEa - * Swap L with R to make it DcbFEa - * Perform bitswap( 1,0x55555555) to make it acbFED - * Swap L with R to make it AcbFED - * - * (In the actual code the four swaps are implicit: R and L are - * simply used the other way round in the first, second and last - * bitswap operations.) - * - * The final permutation is just the inverse of IP, so it can be - * performed by a similar set of operations. - */ - -typedef struct { - word32 k0246[16], k1357[16]; - word32 iv0, iv1; -} DESContext; - -#define rotl(x, c) ( (x << c) | (x >> (32-c)) ) -#define rotl28(x, c) ( ( (x << c) | (x >> (28-c)) ) & 0x0FFFFFFF) - -static word32 bitsel(word32 * input, const int *bitnums, int size) -{ - word32 ret = 0; - while (size--) { - int bitpos = *bitnums++; - ret <<= 1; - if (bitpos >= 0) - ret |= 1 & (input[bitpos / 32] >> (bitpos % 32)); - } - return ret; -} - -static void des_key_setup(word32 key_msw, word32 key_lsw, DESContext * sched) -{ - - static const int PC1_Cbits[] = { - 7, 15, 23, 31, 39, 47, 55, 63, 6, 14, 22, 30, 38, 46, - 54, 62, 5, 13, 21, 29, 37, 45, 53, 61, 4, 12, 20, 28 - }; - static const int PC1_Dbits[] = { - 1, 9, 17, 25, 33, 41, 49, 57, 2, 10, 18, 26, 34, 42, - 50, 58, 3, 11, 19, 27, 35, 43, 51, 59, 36, 44, 52, 60 - }; - /* - * The bit numbers in the two lists below don't correspond to - * the ones in the above description of PC2, because in the - * above description C and D are concatenated so `bit 28' means - * bit 0 of C. In this implementation we're using the standard - * `bitsel' function above and C is in the second word, so bit - * 0 of C is addressed by writing `32' here. - */ - static const int PC2_0246[] = { - 49, 36, 59, 55, -1, -1, 37, 41, 48, 56, 34, 52, -1, -1, 15, 4, - 25, 19, 9, 1, -1, -1, 12, 7, 17, 0, 22, 3, -1, -1, 46, 43 - }; - static const int PC2_1357[] = { - -1, -1, 57, 32, 45, 54, 39, 50, -1, -1, 44, 53, 33, 40, 47, 58, - -1, -1, 26, 16, 5, 11, 23, 8, -1, -1, 10, 14, 6, 20, 27, 24 - }; - static const int leftshifts[] = - { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 }; - - word32 C, D; - word32 buf[2]; - int i; - - buf[0] = key_lsw; - buf[1] = key_msw; - - C = bitsel(buf, PC1_Cbits, 28); - D = bitsel(buf, PC1_Dbits, 28); - - for (i = 0; i < 16; i++) { - C = rotl28(C, leftshifts[i]); - D = rotl28(D, leftshifts[i]); - buf[0] = D; - buf[1] = C; - sched->k0246[i] = bitsel(buf, PC2_0246, 32); - sched->k1357[i] = bitsel(buf, PC2_1357, 32); - } - - sched->iv0 = sched->iv1 = 0; -} - -static const word32 SPboxes[8][64] = { - {0x01010400, 0x00000000, 0x00010000, 0x01010404, - 0x01010004, 0x00010404, 0x00000004, 0x00010000, - 0x00000400, 0x01010400, 0x01010404, 0x00000400, - 0x01000404, 0x01010004, 0x01000000, 0x00000004, - 0x00000404, 0x01000400, 0x01000400, 0x00010400, - 0x00010400, 0x01010000, 0x01010000, 0x01000404, - 0x00010004, 0x01000004, 0x01000004, 0x00010004, - 0x00000000, 0x00000404, 0x00010404, 0x01000000, - 0x00010000, 0x01010404, 0x00000004, 0x01010000, - 0x01010400, 0x01000000, 0x01000000, 0x00000400, - 0x01010004, 0x00010000, 0x00010400, 0x01000004, - 0x00000400, 0x00000004, 0x01000404, 0x00010404, - 0x01010404, 0x00010004, 0x01010000, 0x01000404, - 0x01000004, 0x00000404, 0x00010404, 0x01010400, - 0x00000404, 0x01000400, 0x01000400, 0x00000000, - 0x00010004, 0x00010400, 0x00000000, 0x01010004L}, - - {0x80108020, 0x80008000, 0x00008000, 0x00108020, - 0x00100000, 0x00000020, 0x80100020, 0x80008020, - 0x80000020, 0x80108020, 0x80108000, 0x80000000, - 0x80008000, 0x00100000, 0x00000020, 0x80100020, - 0x00108000, 0x00100020, 0x80008020, 0x00000000, - 0x80000000, 0x00008000, 0x00108020, 0x80100000, - 0x00100020, 0x80000020, 0x00000000, 0x00108000, - 0x00008020, 0x80108000, 0x80100000, 0x00008020, - 0x00000000, 0x00108020, 0x80100020, 0x00100000, - 0x80008020, 0x80100000, 0x80108000, 0x00008000, - 0x80100000, 0x80008000, 0x00000020, 0x80108020, - 0x00108020, 0x00000020, 0x00008000, 0x80000000, - 0x00008020, 0x80108000, 0x00100000, 0x80000020, - 0x00100020, 0x80008020, 0x80000020, 0x00100020, - 0x00108000, 0x00000000, 0x80008000, 0x00008020, - 0x80000000, 0x80100020, 0x80108020, 0x00108000L}, - - {0x00000208, 0x08020200, 0x00000000, 0x08020008, - 0x08000200, 0x00000000, 0x00020208, 0x08000200, - 0x00020008, 0x08000008, 0x08000008, 0x00020000, - 0x08020208, 0x00020008, 0x08020000, 0x00000208, - 0x08000000, 0x00000008, 0x08020200, 0x00000200, - 0x00020200, 0x08020000, 0x08020008, 0x00020208, - 0x08000208, 0x00020200, 0x00020000, 0x08000208, - 0x00000008, 0x08020208, 0x00000200, 0x08000000, - 0x08020200, 0x08000000, 0x00020008, 0x00000208, - 0x00020000, 0x08020200, 0x08000200, 0x00000000, - 0x00000200, 0x00020008, 0x08020208, 0x08000200, - 0x08000008, 0x00000200, 0x00000000, 0x08020008, - 0x08000208, 0x00020000, 0x08000000, 0x08020208, - 0x00000008, 0x00020208, 0x00020200, 0x08000008, - 0x08020000, 0x08000208, 0x00000208, 0x08020000, - 0x00020208, 0x00000008, 0x08020008, 0x00020200L}, - - {0x00802001, 0x00002081, 0x00002081, 0x00000080, - 0x00802080, 0x00800081, 0x00800001, 0x00002001, - 0x00000000, 0x00802000, 0x00802000, 0x00802081, - 0x00000081, 0x00000000, 0x00800080, 0x00800001, - 0x00000001, 0x00002000, 0x00800000, 0x00802001, - 0x00000080, 0x00800000, 0x00002001, 0x00002080, - 0x00800081, 0x00000001, 0x00002080, 0x00800080, - 0x00002000, 0x00802080, 0x00802081, 0x00000081, - 0x00800080, 0x00800001, 0x00802000, 0x00802081, - 0x00000081, 0x00000000, 0x00000000, 0x00802000, - 0x00002080, 0x00800080, 0x00800081, 0x00000001, - 0x00802001, 0x00002081, 0x00002081, 0x00000080, - 0x00802081, 0x00000081, 0x00000001, 0x00002000, - 0x00800001, 0x00002001, 0x00802080, 0x00800081, - 0x00002001, 0x00002080, 0x00800000, 0x00802001, - 0x00000080, 0x00800000, 0x00002000, 0x00802080L}, - - {0x00000100, 0x02080100, 0x02080000, 0x42000100, - 0x00080000, 0x00000100, 0x40000000, 0x02080000, - 0x40080100, 0x00080000, 0x02000100, 0x40080100, - 0x42000100, 0x42080000, 0x00080100, 0x40000000, - 0x02000000, 0x40080000, 0x40080000, 0x00000000, - 0x40000100, 0x42080100, 0x42080100, 0x02000100, - 0x42080000, 0x40000100, 0x00000000, 0x42000000, - 0x02080100, 0x02000000, 0x42000000, 0x00080100, - 0x00080000, 0x42000100, 0x00000100, 0x02000000, - 0x40000000, 0x02080000, 0x42000100, 0x40080100, - 0x02000100, 0x40000000, 0x42080000, 0x02080100, - 0x40080100, 0x00000100, 0x02000000, 0x42080000, - 0x42080100, 0x00080100, 0x42000000, 0x42080100, - 0x02080000, 0x00000000, 0x40080000, 0x42000000, - 0x00080100, 0x02000100, 0x40000100, 0x00080000, - 0x00000000, 0x40080000, 0x02080100, 0x40000100L}, - - {0x20000010, 0x20400000, 0x00004000, 0x20404010, - 0x20400000, 0x00000010, 0x20404010, 0x00400000, - 0x20004000, 0x00404010, 0x00400000, 0x20000010, - 0x00400010, 0x20004000, 0x20000000, 0x00004010, - 0x00000000, 0x00400010, 0x20004010, 0x00004000, - 0x00404000, 0x20004010, 0x00000010, 0x20400010, - 0x20400010, 0x00000000, 0x00404010, 0x20404000, - 0x00004010, 0x00404000, 0x20404000, 0x20000000, - 0x20004000, 0x00000010, 0x20400010, 0x00404000, - 0x20404010, 0x00400000, 0x00004010, 0x20000010, - 0x00400000, 0x20004000, 0x20000000, 0x00004010, - 0x20000010, 0x20404010, 0x00404000, 0x20400000, - 0x00404010, 0x20404000, 0x00000000, 0x20400010, - 0x00000010, 0x00004000, 0x20400000, 0x00404010, - 0x00004000, 0x00400010, 0x20004010, 0x00000000, - 0x20404000, 0x20000000, 0x00400010, 0x20004010L}, - - {0x00200000, 0x04200002, 0x04000802, 0x00000000, - 0x00000800, 0x04000802, 0x00200802, 0x04200800, - 0x04200802, 0x00200000, 0x00000000, 0x04000002, - 0x00000002, 0x04000000, 0x04200002, 0x00000802, - 0x04000800, 0x00200802, 0x00200002, 0x04000800, - 0x04000002, 0x04200000, 0x04200800, 0x00200002, - 0x04200000, 0x00000800, 0x00000802, 0x04200802, - 0x00200800, 0x00000002, 0x04000000, 0x00200800, - 0x04000000, 0x00200800, 0x00200000, 0x04000802, - 0x04000802, 0x04200002, 0x04200002, 0x00000002, - 0x00200002, 0x04000000, 0x04000800, 0x00200000, - 0x04200800, 0x00000802, 0x00200802, 0x04200800, - 0x00000802, 0x04000002, 0x04200802, 0x04200000, - 0x00200800, 0x00000000, 0x00000002, 0x04200802, - 0x00000000, 0x00200802, 0x04200000, 0x00000800, - 0x04000002, 0x04000800, 0x00000800, 0x00200002L}, - - {0x10001040, 0x00001000, 0x00040000, 0x10041040, - 0x10000000, 0x10001040, 0x00000040, 0x10000000, - 0x00040040, 0x10040000, 0x10041040, 0x00041000, - 0x10041000, 0x00041040, 0x00001000, 0x00000040, - 0x10040000, 0x10000040, 0x10001000, 0x00001040, - 0x00041000, 0x00040040, 0x10040040, 0x10041000, - 0x00001040, 0x00000000, 0x00000000, 0x10040040, - 0x10000040, 0x10001000, 0x00041040, 0x00040000, - 0x00041040, 0x00040000, 0x10041000, 0x00001000, - 0x00000040, 0x10040040, 0x00001000, 0x00041040, - 0x10001000, 0x00000040, 0x10000040, 0x10040000, - 0x10040040, 0x10000000, 0x00040000, 0x10001040, - 0x00000000, 0x10041040, 0x00040040, 0x10000040, - 0x10040000, 0x10001000, 0x10001040, 0x00000000, - 0x10041040, 0x00041000, 0x00041000, 0x00001040, - 0x00001040, 0x00040040, 0x10000000, 0x10041000L} -}; - -#define f(R, K0246, K1357) (\ - s0246 = R ^ K0246, \ - s1357 = R ^ K1357, \ - s0246 = rotl(s0246, 28), \ - SPboxes[0] [(s0246 >> 24) & 0x3F] | \ - SPboxes[1] [(s1357 >> 24) & 0x3F] | \ - SPboxes[2] [(s0246 >> 16) & 0x3F] | \ - SPboxes[3] [(s1357 >> 16) & 0x3F] | \ - SPboxes[4] [(s0246 >> 8) & 0x3F] | \ - SPboxes[5] [(s1357 >> 8) & 0x3F] | \ - SPboxes[6] [(s0246 ) & 0x3F] | \ - SPboxes[7] [(s1357 ) & 0x3F]) - -#define bitswap(L, R, n, mask) (\ - swap = mask & ( (R >> n) ^ L ), \ - R ^= swap << n, \ - L ^= swap) - -/* Initial permutation */ -#define IP(L, R) (\ - bitswap(R, L, 4, 0x0F0F0F0F), \ - bitswap(R, L, 16, 0x0000FFFF), \ - bitswap(L, R, 2, 0x33333333), \ - bitswap(L, R, 8, 0x00FF00FF), \ - bitswap(R, L, 1, 0x55555555)) - -/* Final permutation */ -#define FP(L, R) (\ - bitswap(R, L, 1, 0x55555555), \ - bitswap(L, R, 8, 0x00FF00FF), \ - bitswap(L, R, 2, 0x33333333), \ - bitswap(R, L, 16, 0x0000FFFF), \ - bitswap(R, L, 4, 0x0F0F0F0F)) - -static void des_encipher(word32 * output, word32 L, word32 R, - DESContext * sched) -{ - word32 swap, s0246, s1357; - - IP(L, R); - - L = rotl(L, 1); - R = rotl(R, 1); - - L ^= f(R, sched->k0246[0], sched->k1357[0]); - R ^= f(L, sched->k0246[1], sched->k1357[1]); - L ^= f(R, sched->k0246[2], sched->k1357[2]); - R ^= f(L, sched->k0246[3], sched->k1357[3]); - L ^= f(R, sched->k0246[4], sched->k1357[4]); - R ^= f(L, sched->k0246[5], sched->k1357[5]); - L ^= f(R, sched->k0246[6], sched->k1357[6]); - R ^= f(L, sched->k0246[7], sched->k1357[7]); - L ^= f(R, sched->k0246[8], sched->k1357[8]); - R ^= f(L, sched->k0246[9], sched->k1357[9]); - L ^= f(R, sched->k0246[10], sched->k1357[10]); - R ^= f(L, sched->k0246[11], sched->k1357[11]); - L ^= f(R, sched->k0246[12], sched->k1357[12]); - R ^= f(L, sched->k0246[13], sched->k1357[13]); - L ^= f(R, sched->k0246[14], sched->k1357[14]); - R ^= f(L, sched->k0246[15], sched->k1357[15]); - - L = rotl(L, 31); - R = rotl(R, 31); - - swap = L; - L = R; - R = swap; - - FP(L, R); - - output[0] = L; - output[1] = R; -} - -static void des_decipher(word32 * output, word32 L, word32 R, - DESContext * sched) -{ - word32 swap, s0246, s1357; - - IP(L, R); - - L = rotl(L, 1); - R = rotl(R, 1); - - L ^= f(R, sched->k0246[15], sched->k1357[15]); - R ^= f(L, sched->k0246[14], sched->k1357[14]); - L ^= f(R, sched->k0246[13], sched->k1357[13]); - R ^= f(L, sched->k0246[12], sched->k1357[12]); - L ^= f(R, sched->k0246[11], sched->k1357[11]); - R ^= f(L, sched->k0246[10], sched->k1357[10]); - L ^= f(R, sched->k0246[9], sched->k1357[9]); - R ^= f(L, sched->k0246[8], sched->k1357[8]); - L ^= f(R, sched->k0246[7], sched->k1357[7]); - R ^= f(L, sched->k0246[6], sched->k1357[6]); - L ^= f(R, sched->k0246[5], sched->k1357[5]); - R ^= f(L, sched->k0246[4], sched->k1357[4]); - L ^= f(R, sched->k0246[3], sched->k1357[3]); - R ^= f(L, sched->k0246[2], sched->k1357[2]); - L ^= f(R, sched->k0246[1], sched->k1357[1]); - R ^= f(L, sched->k0246[0], sched->k1357[0]); - - L = rotl(L, 31); - R = rotl(R, 31); - - swap = L; - L = R; - R = swap; - - FP(L, R); - - output[0] = L; - output[1] = R; -} - -static void des_cbc_encrypt(unsigned char *blk, - unsigned int len, DESContext * sched) -{ - word32 out[2], iv0, iv1; - unsigned int i; - - assert((len & 7) == 0); - - iv0 = sched->iv0; - iv1 = sched->iv1; - for (i = 0; i < len; i += 8) { - iv0 ^= GET_32BIT_MSB_FIRST(blk); - iv1 ^= GET_32BIT_MSB_FIRST(blk + 4); - des_encipher(out, iv0, iv1, sched); - iv0 = out[0]; - iv1 = out[1]; - PUT_32BIT_MSB_FIRST(blk, iv0); - PUT_32BIT_MSB_FIRST(blk + 4, iv1); - blk += 8; - } - sched->iv0 = iv0; - sched->iv1 = iv1; -} - -static void des_cbc_decrypt(unsigned char *blk, - unsigned int len, DESContext * sched) -{ - word32 out[2], iv0, iv1, xL, xR; - unsigned int i; - - assert((len & 7) == 0); - - iv0 = sched->iv0; - iv1 = sched->iv1; - for (i = 0; i < len; i += 8) { - xL = GET_32BIT_MSB_FIRST(blk); - xR = GET_32BIT_MSB_FIRST(blk + 4); - des_decipher(out, xL, xR, sched); - iv0 ^= out[0]; - iv1 ^= out[1]; - PUT_32BIT_MSB_FIRST(blk, iv0); - PUT_32BIT_MSB_FIRST(blk + 4, iv1); - blk += 8; - iv0 = xL; - iv1 = xR; - } - sched->iv0 = iv0; - sched->iv1 = iv1; -} - -static void des_3cbc_encrypt(unsigned char *blk, - unsigned int len, DESContext * scheds) -{ - des_cbc_encrypt(blk, len, &scheds[0]); - des_cbc_decrypt(blk, len, &scheds[1]); - des_cbc_encrypt(blk, len, &scheds[2]); -} - -static void des_cbc3_encrypt(unsigned char *blk, - unsigned int len, DESContext * scheds) -{ - word32 out[2], iv0, iv1; - unsigned int i; - - assert((len & 7) == 0); - - iv0 = scheds->iv0; - iv1 = scheds->iv1; - for (i = 0; i < len; i += 8) { - iv0 ^= GET_32BIT_MSB_FIRST(blk); - iv1 ^= GET_32BIT_MSB_FIRST(blk + 4); - des_encipher(out, iv0, iv1, &scheds[0]); - des_decipher(out, out[0], out[1], &scheds[1]); - des_encipher(out, out[0], out[1], &scheds[2]); - iv0 = out[0]; - iv1 = out[1]; - PUT_32BIT_MSB_FIRST(blk, iv0); - PUT_32BIT_MSB_FIRST(blk + 4, iv1); - blk += 8; - } - scheds->iv0 = iv0; - scheds->iv1 = iv1; -} - -static void des_3cbc_decrypt(unsigned char *blk, - unsigned int len, DESContext * scheds) -{ - des_cbc_decrypt(blk, len, &scheds[2]); - des_cbc_encrypt(blk, len, &scheds[1]); - des_cbc_decrypt(blk, len, &scheds[0]); -} - -static void des_cbc3_decrypt(unsigned char *blk, - unsigned int len, DESContext * scheds) -{ - word32 out[2], iv0, iv1, xL, xR; - unsigned int i; - - assert((len & 7) == 0); - - iv0 = scheds->iv0; - iv1 = scheds->iv1; - for (i = 0; i < len; i += 8) { - xL = GET_32BIT_MSB_FIRST(blk); - xR = GET_32BIT_MSB_FIRST(blk + 4); - des_decipher(out, xL, xR, &scheds[2]); - des_encipher(out, out[0], out[1], &scheds[1]); - des_decipher(out, out[0], out[1], &scheds[0]); - iv0 ^= out[0]; - iv1 ^= out[1]; - PUT_32BIT_MSB_FIRST(blk, iv0); - PUT_32BIT_MSB_FIRST(blk + 4, iv1); - blk += 8; - iv0 = xL; - iv1 = xR; - } - scheds->iv0 = iv0; - scheds->iv1 = iv1; -} - -static void des_sdctr3(unsigned char *blk, - unsigned int len, DESContext * scheds) -{ - word32 b[2], iv0, iv1, tmp; - unsigned int i; - - assert((len & 7) == 0); - - iv0 = scheds->iv0; - iv1 = scheds->iv1; - for (i = 0; i < len; i += 8) { - des_encipher(b, iv0, iv1, &scheds[0]); - des_decipher(b, b[0], b[1], &scheds[1]); - des_encipher(b, b[0], b[1], &scheds[2]); - tmp = GET_32BIT_MSB_FIRST(blk); - PUT_32BIT_MSB_FIRST(blk, tmp ^ b[0]); - blk += 4; - tmp = GET_32BIT_MSB_FIRST(blk); - PUT_32BIT_MSB_FIRST(blk, tmp ^ b[1]); - blk += 4; - if ((iv1 = (iv1 + 1) & 0xffffffff) == 0) - iv0 = (iv0 + 1) & 0xffffffff; - } - scheds->iv0 = iv0; - scheds->iv1 = iv1; -} - -static void *des3_make_context(void) -{ - return snewn(3, DESContext); -} - -static void *des3_ssh1_make_context(void) -{ - /* Need 3 keys for each direction, in SSH-1 */ - return snewn(6, DESContext); -} - -static void *des_make_context(void) -{ - return snew(DESContext); -} - -static void *des_ssh1_make_context(void) -{ - /* Need one key for each direction, in SSH-1 */ - return snewn(2, DESContext); -} - -static void des3_free_context(void *handle) /* used for both 3DES and DES */ -{ - sfree(handle); -} - -static void des3_key(void *handle, unsigned char *key) -{ - DESContext *keys = (DESContext *) handle; - des_key_setup(GET_32BIT_MSB_FIRST(key), - GET_32BIT_MSB_FIRST(key + 4), &keys[0]); - des_key_setup(GET_32BIT_MSB_FIRST(key + 8), - GET_32BIT_MSB_FIRST(key + 12), &keys[1]); - des_key_setup(GET_32BIT_MSB_FIRST(key + 16), - GET_32BIT_MSB_FIRST(key + 20), &keys[2]); -} - -static void des3_iv(void *handle, unsigned char *key) -{ - DESContext *keys = (DESContext *) handle; - keys[0].iv0 = GET_32BIT_MSB_FIRST(key); - keys[0].iv1 = GET_32BIT_MSB_FIRST(key + 4); -} - -static void des_key(void *handle, unsigned char *key) -{ - DESContext *keys = (DESContext *) handle; - des_key_setup(GET_32BIT_MSB_FIRST(key), - GET_32BIT_MSB_FIRST(key + 4), &keys[0]); -} - -static void des3_sesskey(void *handle, unsigned char *key) -{ - DESContext *keys = (DESContext *) handle; - des3_key(keys, key); - des3_key(keys+3, key); -} - -static void des3_encrypt_blk(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_3cbc_encrypt(blk, len, keys); -} - -static void des3_decrypt_blk(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_3cbc_decrypt(blk, len, keys+3); -} - -static void des3_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_cbc3_encrypt(blk, len, keys); -} - -static void des3_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_cbc3_decrypt(blk, len, keys); -} - -static void des3_ssh2_sdctr(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_sdctr3(blk, len, keys); -} - -static void des_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_cbc_encrypt(blk, len, keys); -} - -static void des_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_cbc_decrypt(blk, len, keys); -} - -void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len) -{ - DESContext ourkeys[3]; - des_key_setup(GET_32BIT_MSB_FIRST(key), - GET_32BIT_MSB_FIRST(key + 4), &ourkeys[0]); - des_key_setup(GET_32BIT_MSB_FIRST(key + 8), - GET_32BIT_MSB_FIRST(key + 12), &ourkeys[1]); - des_key_setup(GET_32BIT_MSB_FIRST(key), - GET_32BIT_MSB_FIRST(key + 4), &ourkeys[2]); - des_3cbc_decrypt(blk, len, ourkeys); - memset(ourkeys, 0, sizeof(ourkeys)); -} - -void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len) -{ - DESContext ourkeys[3]; - des_key_setup(GET_32BIT_MSB_FIRST(key), - GET_32BIT_MSB_FIRST(key + 4), &ourkeys[0]); - des_key_setup(GET_32BIT_MSB_FIRST(key + 8), - GET_32BIT_MSB_FIRST(key + 12), &ourkeys[1]); - des_key_setup(GET_32BIT_MSB_FIRST(key), - GET_32BIT_MSB_FIRST(key + 4), &ourkeys[2]); - des_3cbc_encrypt(blk, len, ourkeys); - memset(ourkeys, 0, sizeof(ourkeys)); -} - -void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, - unsigned char *blk, int len) -{ - DESContext ourkeys[3]; - des_key_setup(GET_32BIT_MSB_FIRST(key), - GET_32BIT_MSB_FIRST(key + 4), &ourkeys[0]); - des_key_setup(GET_32BIT_MSB_FIRST(key + 8), - GET_32BIT_MSB_FIRST(key + 12), &ourkeys[1]); - des_key_setup(GET_32BIT_MSB_FIRST(key + 16), - GET_32BIT_MSB_FIRST(key + 20), &ourkeys[2]); - ourkeys[0].iv0 = GET_32BIT_MSB_FIRST(iv); - ourkeys[0].iv1 = GET_32BIT_MSB_FIRST(iv+4); - des_cbc3_decrypt(blk, len, ourkeys); - memset(ourkeys, 0, sizeof(ourkeys)); -} - -void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, - unsigned char *blk, int len) -{ - DESContext ourkeys[3]; - des_key_setup(GET_32BIT_MSB_FIRST(key), - GET_32BIT_MSB_FIRST(key + 4), &ourkeys[0]); - des_key_setup(GET_32BIT_MSB_FIRST(key + 8), - GET_32BIT_MSB_FIRST(key + 12), &ourkeys[1]); - des_key_setup(GET_32BIT_MSB_FIRST(key + 16), - GET_32BIT_MSB_FIRST(key + 20), &ourkeys[2]); - ourkeys[0].iv0 = GET_32BIT_MSB_FIRST(iv); - ourkeys[0].iv1 = GET_32BIT_MSB_FIRST(iv+4); - des_cbc3_encrypt(blk, len, ourkeys); - memset(ourkeys, 0, sizeof(ourkeys)); -} - -static void des_keysetup_xdmauth(unsigned char *keydata, DESContext *dc) -{ - unsigned char key[8]; - int i, nbits, j; - unsigned int bits; - - bits = 0; - nbits = 0; - j = 0; - for (i = 0; i < 8; i++) { - if (nbits < 7) { - bits = (bits << 8) | keydata[j]; - nbits += 8; - j++; - } - key[i] = (bits >> (nbits - 7)) << 1; - bits &= ~(0x7F << (nbits - 7)); - nbits -= 7; - } - - des_key_setup(GET_32BIT_MSB_FIRST(key), GET_32BIT_MSB_FIRST(key + 4), dc); -} - -void des_encrypt_xdmauth(unsigned char *keydata, unsigned char *blk, int len) -{ - DESContext dc; - des_keysetup_xdmauth(keydata, &dc); - des_cbc_encrypt(blk, 24, &dc); -} - -void des_decrypt_xdmauth(unsigned char *keydata, unsigned char *blk, int len) -{ - DESContext dc; - des_keysetup_xdmauth(keydata, &dc); - des_cbc_decrypt(blk, 24, &dc); -} - -static const struct ssh2_cipher ssh_3des_ssh2 = { - des3_make_context, des3_free_context, des3_iv, des3_key, - des3_ssh2_encrypt_blk, des3_ssh2_decrypt_blk, - "3des-cbc", - 8, 168, SSH_CIPHER_IS_CBC, "triple-DES CBC" -}; - -static const struct ssh2_cipher ssh_3des_ssh2_ctr = { - des3_make_context, des3_free_context, des3_iv, des3_key, - des3_ssh2_sdctr, des3_ssh2_sdctr, - "3des-ctr", - 8, 168, 0, "triple-DES SDCTR" -}; - -/* - * Single DES in SSH-2. "des-cbc" is marked as HISTORIC in - * RFC 4250, referring to - * FIPS-46-3. ("Single DES (i.e., DES) will be permitted - * for legacy systems only.") , but ssh.com support it and - * apparently aren't the only people to do so, so we sigh - * and implement it anyway. - */ -static const struct ssh2_cipher ssh_des_ssh2 = { - des_make_context, des3_free_context, des3_iv, des_key, - des_ssh2_encrypt_blk, des_ssh2_decrypt_blk, - "des-cbc", - 8, 56, SSH_CIPHER_IS_CBC, "single-DES CBC" -}; - -static const struct ssh2_cipher ssh_des_sshcom_ssh2 = { - des_make_context, des3_free_context, des3_iv, des_key, - des_ssh2_encrypt_blk, des_ssh2_decrypt_blk, - "des-cbc@ssh.com", - 8, 56, SSH_CIPHER_IS_CBC, "single-DES CBC" -}; - -static const struct ssh2_cipher *const des3_list[] = { - &ssh_3des_ssh2_ctr, - &ssh_3des_ssh2 -}; - -const struct ssh2_ciphers ssh2_3des = { - sizeof(des3_list) / sizeof(*des3_list), - des3_list -}; - -static const struct ssh2_cipher *const des_list[] = { - &ssh_des_ssh2, - &ssh_des_sshcom_ssh2 -}; - -const struct ssh2_ciphers ssh2_des = { - sizeof(des_list) / sizeof(*des_list), - des_list -}; - -const struct ssh_cipher ssh_3des = { - des3_ssh1_make_context, des3_free_context, des3_sesskey, - des3_encrypt_blk, des3_decrypt_blk, - 8, "triple-DES inner-CBC" -}; - -static void des_sesskey(void *handle, unsigned char *key) -{ - DESContext *keys = (DESContext *) handle; - des_key(keys, key); - des_key(keys+1, key); -} - -static void des_encrypt_blk(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_cbc_encrypt(blk, len, keys); -} - -static void des_decrypt_blk(void *handle, unsigned char *blk, int len) -{ - DESContext *keys = (DESContext *) handle; - des_cbc_decrypt(blk, len, keys+1); -} - -const struct ssh_cipher ssh_des = { - des_ssh1_make_context, des3_free_context, des_sesskey, - des_encrypt_blk, des_decrypt_blk, - 8, "single-DES CBC" -}; diff --git a/tools/plink/sshdh.c b/tools/plink/sshdh.c deleted file mode 100644 index 41df756db..000000000 --- a/tools/plink/sshdh.c +++ /dev/null @@ -1,230 +0,0 @@ -/* - * Diffie-Hellman implementation for PuTTY. - */ - -#include "ssh.h" - -/* - * The primes used in the group1 and group14 key exchange. - */ -static const unsigned char P1[] = { - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2, - 0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1, - 0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6, - 0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD, - 0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D, - 0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45, - 0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9, - 0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED, - 0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11, - 0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE6, 0x53, 0x81, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF -}; -static const unsigned char P14[] = { - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2, - 0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1, - 0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6, - 0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD, - 0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D, - 0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45, - 0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9, - 0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED, - 0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11, - 0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE4, 0x5B, 0x3D, - 0xC2, 0x00, 0x7C, 0xB8, 0xA1, 0x63, 0xBF, 0x05, 0x98, 0xDA, 0x48, 0x36, - 0x1C, 0x55, 0xD3, 0x9A, 0x69, 0x16, 0x3F, 0xA8, 0xFD, 0x24, 0xCF, 0x5F, - 0x83, 0x65, 0x5D, 0x23, 0xDC, 0xA3, 0xAD, 0x96, 0x1C, 0x62, 0xF3, 0x56, - 0x20, 0x85, 0x52, 0xBB, 0x9E, 0xD5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6D, - 0x67, 0x0C, 0x35, 0x4E, 0x4A, 0xBC, 0x98, 0x04, 0xF1, 0x74, 0x6C, 0x08, - 0xCA, 0x18, 0x21, 0x7C, 0x32, 0x90, 0x5E, 0x46, 0x2E, 0x36, 0xCE, 0x3B, - 0xE3, 0x9E, 0x77, 0x2C, 0x18, 0x0E, 0x86, 0x03, 0x9B, 0x27, 0x83, 0xA2, - 0xEC, 0x07, 0xA2, 0x8F, 0xB5, 0xC5, 0x5D, 0xF0, 0x6F, 0x4C, 0x52, 0xC9, - 0xDE, 0x2B, 0xCB, 0xF6, 0x95, 0x58, 0x17, 0x18, 0x39, 0x95, 0x49, 0x7C, - 0xEA, 0x95, 0x6A, 0xE5, 0x15, 0xD2, 0x26, 0x18, 0x98, 0xFA, 0x05, 0x10, - 0x15, 0x72, 0x8E, 0x5A, 0x8A, 0xAC, 0xAA, 0x68, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF -}; - -/* - * The generator g = 2 (used for both group1 and group14). - */ -static const unsigned char G[] = { 2 }; - -static const struct ssh_kex ssh_diffiehellman_group1_sha1 = { - "diffie-hellman-group1-sha1", "group1", - KEXTYPE_DH, P1, G, lenof(P1), lenof(G), &ssh_sha1 -}; - -static const struct ssh_kex *const group1_list[] = { - &ssh_diffiehellman_group1_sha1 -}; - -const struct ssh_kexes ssh_diffiehellman_group1 = { - sizeof(group1_list) / sizeof(*group1_list), - group1_list -}; - -static const struct ssh_kex ssh_diffiehellman_group14_sha1 = { - "diffie-hellman-group14-sha1", "group14", - KEXTYPE_DH, P14, G, lenof(P14), lenof(G), &ssh_sha1 -}; - -static const struct ssh_kex *const group14_list[] = { - &ssh_diffiehellman_group14_sha1 -}; - -const struct ssh_kexes ssh_diffiehellman_group14 = { - sizeof(group14_list) / sizeof(*group14_list), - group14_list -}; - -static const struct ssh_kex ssh_diffiehellman_gex_sha256 = { - "diffie-hellman-group-exchange-sha256", NULL, - KEXTYPE_DH, NULL, NULL, 0, 0, &ssh_sha256 -}; - -static const struct ssh_kex ssh_diffiehellman_gex_sha1 = { - "diffie-hellman-group-exchange-sha1", NULL, - KEXTYPE_DH, NULL, NULL, 0, 0, &ssh_sha1 -}; - -static const struct ssh_kex *const gex_list[] = { - &ssh_diffiehellman_gex_sha256, - &ssh_diffiehellman_gex_sha1 -}; - -const struct ssh_kexes ssh_diffiehellman_gex = { - sizeof(gex_list) / sizeof(*gex_list), - gex_list -}; - -/* - * Variables. - */ -struct dh_ctx { - Bignum x, e, p, q, qmask, g; -}; - -/* - * Common DH initialisation. - */ -static void dh_init(struct dh_ctx *ctx) -{ - ctx->q = bignum_rshift(ctx->p, 1); - ctx->qmask = bignum_bitmask(ctx->q); - ctx->x = ctx->e = NULL; -} - -/* - * Initialise DH for a standard group. - */ -void *dh_setup_group(const struct ssh_kex *kex) -{ - struct dh_ctx *ctx = snew(struct dh_ctx); - ctx->p = bignum_from_bytes(kex->pdata, kex->plen); - ctx->g = bignum_from_bytes(kex->gdata, kex->glen); - dh_init(ctx); - return ctx; -} - -/* - * Initialise DH for a server-supplied group. - */ -void *dh_setup_gex(Bignum pval, Bignum gval) -{ - struct dh_ctx *ctx = snew(struct dh_ctx); - ctx->p = copybn(pval); - ctx->g = copybn(gval); - dh_init(ctx); - return ctx; -} - -/* - * Clean up and free a context. - */ -void dh_cleanup(void *handle) -{ - struct dh_ctx *ctx = (struct dh_ctx *)handle; - freebn(ctx->x); - freebn(ctx->e); - freebn(ctx->p); - freebn(ctx->g); - freebn(ctx->q); - freebn(ctx->qmask); - sfree(ctx); -} - -/* - * DH stage 1: invent a number x between 1 and q, and compute e = - * g^x mod p. Return e. - * - * If `nbits' is greater than zero, it is used as an upper limit - * for the number of bits in x. This is safe provided that (a) you - * use twice as many bits in x as the number of bits you expect to - * use in your session key, and (b) the DH group is a safe prime - * (which SSH demands that it must be). - * - * P. C. van Oorschot, M. J. Wiener - * "On Diffie-Hellman Key Agreement with Short Exponents". - * Advances in Cryptology: Proceedings of Eurocrypt '96 - * Springer-Verlag, May 1996. - */ -Bignum dh_create_e(void *handle, int nbits) -{ - struct dh_ctx *ctx = (struct dh_ctx *)handle; - int i; - - int nbytes; - unsigned char *buf; - - nbytes = ssh1_bignum_length(ctx->qmask); - buf = snewn(nbytes, unsigned char); - - do { - /* - * Create a potential x, by ANDing a string of random bytes - * with qmask. - */ - if (ctx->x) - freebn(ctx->x); - if (nbits == 0 || nbits > bignum_bitcount(ctx->qmask)) { - ssh1_write_bignum(buf, ctx->qmask); - for (i = 2; i < nbytes; i++) - buf[i] &= random_byte(); - ssh1_read_bignum(buf, nbytes, &ctx->x); /* can't fail */ - } else { - int b, nb; - ctx->x = bn_power_2(nbits); - b = nb = 0; - for (i = 0; i < nbits; i++) { - if (nb == 0) { - nb = 8; - b = random_byte(); - } - bignum_set_bit(ctx->x, i, b & 1); - b >>= 1; - nb--; - } - } - } while (bignum_cmp(ctx->x, One) <= 0 || bignum_cmp(ctx->x, ctx->q) >= 0); - - sfree(buf); - - /* - * Done. Now compute e = g^x mod p. - */ - ctx->e = modpow(ctx->g, ctx->x, ctx->p); - - return ctx->e; -} - -/* - * DH stage 2: given a number f, compute K = f^x mod p. - */ -Bignum dh_find_K(void *handle, Bignum f) -{ - struct dh_ctx *ctx = (struct dh_ctx *)handle; - Bignum ret; - ret = modpow(f, ctx->x, ctx->p); - return ret; -} diff --git a/tools/plink/sshdss.c b/tools/plink/sshdss.c deleted file mode 100644 index dba1db1b4..000000000 --- a/tools/plink/sshdss.c +++ /dev/null @@ -1,643 +0,0 @@ -/* - * Digital Signature Standard implementation for PuTTY. - */ - -#include -#include -#include - -#include "ssh.h" -#include "misc.h" - -static void sha_mpint(SHA_State * s, Bignum b) -{ - unsigned char lenbuf[4]; - int len; - len = (bignum_bitcount(b) + 8) / 8; - PUT_32BIT(lenbuf, len); - SHA_Bytes(s, lenbuf, 4); - while (len-- > 0) { - lenbuf[0] = bignum_byte(b, len); - SHA_Bytes(s, lenbuf, 1); - } - memset(lenbuf, 0, sizeof(lenbuf)); -} - -static void sha512_mpint(SHA512_State * s, Bignum b) -{ - unsigned char lenbuf[4]; - int len; - len = (bignum_bitcount(b) + 8) / 8; - PUT_32BIT(lenbuf, len); - SHA512_Bytes(s, lenbuf, 4); - while (len-- > 0) { - lenbuf[0] = bignum_byte(b, len); - SHA512_Bytes(s, lenbuf, 1); - } - memset(lenbuf, 0, sizeof(lenbuf)); -} - -static void getstring(char **data, int *datalen, char **p, int *length) -{ - *p = NULL; - if (*datalen < 4) - return; - *length = GET_32BIT(*data); - *datalen -= 4; - *data += 4; - if (*datalen < *length) - return; - *p = *data; - *data += *length; - *datalen -= *length; -} -static Bignum getmp(char **data, int *datalen) -{ - char *p; - int length; - Bignum b; - - getstring(data, datalen, &p, &length); - if (!p) - return NULL; - if (p[0] & 0x80) - return NULL; /* negative mp */ - b = bignum_from_bytes((unsigned char *)p, length); - return b; -} - -static Bignum get160(char **data, int *datalen) -{ - Bignum b; - - b = bignum_from_bytes((unsigned char *)*data, 20); - *data += 20; - *datalen -= 20; - - return b; -} - -static void *dss_newkey(char *data, int len) -{ - char *p; - int slen; - struct dss_key *dss; - - dss = snew(struct dss_key); - if (!dss) - return NULL; - getstring(&data, &len, &p, &slen); - -#ifdef DEBUG_DSS - { - int i; - printf("key:"); - for (i = 0; i < len; i++) - printf(" %02x", (unsigned char) (data[i])); - printf("\n"); - } -#endif - - if (!p || memcmp(p, "ssh-dss", 7)) { - sfree(dss); - return NULL; - } - dss->p = getmp(&data, &len); - dss->q = getmp(&data, &len); - dss->g = getmp(&data, &len); - dss->y = getmp(&data, &len); - - return dss; -} - -static void dss_freekey(void *key) -{ - struct dss_key *dss = (struct dss_key *) key; - freebn(dss->p); - freebn(dss->q); - freebn(dss->g); - freebn(dss->y); - sfree(dss); -} - -static char *dss_fmtkey(void *key) -{ - struct dss_key *dss = (struct dss_key *) key; - char *p; - int len, i, pos, nibbles; - static const char hex[] = "0123456789abcdef"; - if (!dss->p) - return NULL; - len = 8 + 4 + 1; /* 4 x "0x", punctuation, \0 */ - len += 4 * (bignum_bitcount(dss->p) + 15) / 16; - len += 4 * (bignum_bitcount(dss->q) + 15) / 16; - len += 4 * (bignum_bitcount(dss->g) + 15) / 16; - len += 4 * (bignum_bitcount(dss->y) + 15) / 16; - p = snewn(len, char); - if (!p) - return NULL; - - pos = 0; - pos += sprintf(p + pos, "0x"); - nibbles = (3 + bignum_bitcount(dss->p)) / 4; - if (nibbles < 1) - nibbles = 1; - for (i = nibbles; i--;) - p[pos++] = - hex[(bignum_byte(dss->p, i / 2) >> (4 * (i % 2))) & 0xF]; - pos += sprintf(p + pos, ",0x"); - nibbles = (3 + bignum_bitcount(dss->q)) / 4; - if (nibbles < 1) - nibbles = 1; - for (i = nibbles; i--;) - p[pos++] = - hex[(bignum_byte(dss->q, i / 2) >> (4 * (i % 2))) & 0xF]; - pos += sprintf(p + pos, ",0x"); - nibbles = (3 + bignum_bitcount(dss->g)) / 4; - if (nibbles < 1) - nibbles = 1; - for (i = nibbles; i--;) - p[pos++] = - hex[(bignum_byte(dss->g, i / 2) >> (4 * (i % 2))) & 0xF]; - pos += sprintf(p + pos, ",0x"); - nibbles = (3 + bignum_bitcount(dss->y)) / 4; - if (nibbles < 1) - nibbles = 1; - for (i = nibbles; i--;) - p[pos++] = - hex[(bignum_byte(dss->y, i / 2) >> (4 * (i % 2))) & 0xF]; - p[pos] = '\0'; - return p; -} - -static char *dss_fingerprint(void *key) -{ - struct dss_key *dss = (struct dss_key *) key; - struct MD5Context md5c; - unsigned char digest[16], lenbuf[4]; - char buffer[16 * 3 + 40]; - char *ret; - int numlen, i; - - MD5Init(&md5c); - MD5Update(&md5c, (unsigned char *)"\0\0\0\7ssh-dss", 11); - -#define ADD_BIGNUM(bignum) \ - numlen = (bignum_bitcount(bignum)+8)/8; \ - PUT_32BIT(lenbuf, numlen); MD5Update(&md5c, lenbuf, 4); \ - for (i = numlen; i-- ;) { \ - unsigned char c = bignum_byte(bignum, i); \ - MD5Update(&md5c, &c, 1); \ - } - ADD_BIGNUM(dss->p); - ADD_BIGNUM(dss->q); - ADD_BIGNUM(dss->g); - ADD_BIGNUM(dss->y); -#undef ADD_BIGNUM - - MD5Final(digest, &md5c); - - sprintf(buffer, "ssh-dss %d ", bignum_bitcount(dss->p)); - for (i = 0; i < 16; i++) - sprintf(buffer + strlen(buffer), "%s%02x", i ? ":" : "", - digest[i]); - ret = snewn(strlen(buffer) + 1, char); - if (ret) - strcpy(ret, buffer); - return ret; -} - -static int dss_verifysig(void *key, char *sig, int siglen, - char *data, int datalen) -{ - struct dss_key *dss = (struct dss_key *) key; - char *p; - int slen; - char hash[20]; - Bignum r, s, w, gu1p, yu2p, gu1yu2p, u1, u2, sha, v; - int ret; - - if (!dss->p) - return 0; - -#ifdef DEBUG_DSS - { - int i; - printf("sig:"); - for (i = 0; i < siglen; i++) - printf(" %02x", (unsigned char) (sig[i])); - printf("\n"); - } -#endif - /* - * Commercial SSH (2.0.13) and OpenSSH disagree over the format - * of a DSA signature. OpenSSH is in line with RFC 4253: - * it uses a string "ssh-dss", followed by a 40-byte string - * containing two 160-bit integers end-to-end. Commercial SSH - * can't be bothered with the header bit, and considers a DSA - * signature blob to be _just_ the 40-byte string containing - * the two 160-bit integers. We tell them apart by measuring - * the length: length 40 means the commercial-SSH bug, anything - * else is assumed to be RFC-compliant. - */ - if (siglen != 40) { /* bug not present; read admin fields */ - getstring(&sig, &siglen, &p, &slen); - if (!p || slen != 7 || memcmp(p, "ssh-dss", 7)) { - return 0; - } - sig += 4, siglen -= 4; /* skip yet another length field */ - } - r = get160(&sig, &siglen); - s = get160(&sig, &siglen); - if (!r || !s) - return 0; - - /* - * Step 1. w <- s^-1 mod q. - */ - w = modinv(s, dss->q); - - /* - * Step 2. u1 <- SHA(message) * w mod q. - */ - SHA_Simple(data, datalen, (unsigned char *)hash); - p = hash; - slen = 20; - sha = get160(&p, &slen); - u1 = modmul(sha, w, dss->q); - - /* - * Step 3. u2 <- r * w mod q. - */ - u2 = modmul(r, w, dss->q); - - /* - * Step 4. v <- (g^u1 * y^u2 mod p) mod q. - */ - gu1p = modpow(dss->g, u1, dss->p); - yu2p = modpow(dss->y, u2, dss->p); - gu1yu2p = modmul(gu1p, yu2p, dss->p); - v = modmul(gu1yu2p, One, dss->q); - - /* - * Step 5. v should now be equal to r. - */ - - ret = !bignum_cmp(v, r); - - freebn(w); - freebn(sha); - freebn(gu1p); - freebn(yu2p); - freebn(gu1yu2p); - freebn(v); - freebn(r); - freebn(s); - - return ret; -} - -static unsigned char *dss_public_blob(void *key, int *len) -{ - struct dss_key *dss = (struct dss_key *) key; - int plen, qlen, glen, ylen, bloblen; - int i; - unsigned char *blob, *p; - - plen = (bignum_bitcount(dss->p) + 8) / 8; - qlen = (bignum_bitcount(dss->q) + 8) / 8; - glen = (bignum_bitcount(dss->g) + 8) / 8; - ylen = (bignum_bitcount(dss->y) + 8) / 8; - - /* - * string "ssh-dss", mpint p, mpint q, mpint g, mpint y. Total - * 27 + sum of lengths. (five length fields, 20+7=27). - */ - bloblen = 27 + plen + qlen + glen + ylen; - blob = snewn(bloblen, unsigned char); - p = blob; - PUT_32BIT(p, 7); - p += 4; - memcpy(p, "ssh-dss", 7); - p += 7; - PUT_32BIT(p, plen); - p += 4; - for (i = plen; i--;) - *p++ = bignum_byte(dss->p, i); - PUT_32BIT(p, qlen); - p += 4; - for (i = qlen; i--;) - *p++ = bignum_byte(dss->q, i); - PUT_32BIT(p, glen); - p += 4; - for (i = glen; i--;) - *p++ = bignum_byte(dss->g, i); - PUT_32BIT(p, ylen); - p += 4; - for (i = ylen; i--;) - *p++ = bignum_byte(dss->y, i); - assert(p == blob + bloblen); - *len = bloblen; - return blob; -} - -static unsigned char *dss_private_blob(void *key, int *len) -{ - struct dss_key *dss = (struct dss_key *) key; - int xlen, bloblen; - int i; - unsigned char *blob, *p; - - xlen = (bignum_bitcount(dss->x) + 8) / 8; - - /* - * mpint x, string[20] the SHA of p||q||g. Total 4 + xlen. - */ - bloblen = 4 + xlen; - blob = snewn(bloblen, unsigned char); - p = blob; - PUT_32BIT(p, xlen); - p += 4; - for (i = xlen; i--;) - *p++ = bignum_byte(dss->x, i); - assert(p == blob + bloblen); - *len = bloblen; - return blob; -} - -static void *dss_createkey(unsigned char *pub_blob, int pub_len, - unsigned char *priv_blob, int priv_len) -{ - struct dss_key *dss; - char *pb = (char *) priv_blob; - char *hash; - int hashlen; - SHA_State s; - unsigned char digest[20]; - Bignum ytest; - - dss = dss_newkey((char *) pub_blob, pub_len); - dss->x = getmp(&pb, &priv_len); - - /* - * Check the obsolete hash in the old DSS key format. - */ - hashlen = -1; - getstring(&pb, &priv_len, &hash, &hashlen); - if (hashlen == 20) { - SHA_Init(&s); - sha_mpint(&s, dss->p); - sha_mpint(&s, dss->q); - sha_mpint(&s, dss->g); - SHA_Final(&s, digest); - if (0 != memcmp(hash, digest, 20)) { - dss_freekey(dss); - return NULL; - } - } - - /* - * Now ensure g^x mod p really is y. - */ - ytest = modpow(dss->g, dss->x, dss->p); - if (0 != bignum_cmp(ytest, dss->y)) { - dss_freekey(dss); - return NULL; - } - freebn(ytest); - - return dss; -} - -static void *dss_openssh_createkey(unsigned char **blob, int *len) -{ - char **b = (char **) blob; - struct dss_key *dss; - - dss = snew(struct dss_key); - if (!dss) - return NULL; - - dss->p = getmp(b, len); - dss->q = getmp(b, len); - dss->g = getmp(b, len); - dss->y = getmp(b, len); - dss->x = getmp(b, len); - - if (!dss->p || !dss->q || !dss->g || !dss->y || !dss->x) { - sfree(dss->p); - sfree(dss->q); - sfree(dss->g); - sfree(dss->y); - sfree(dss->x); - sfree(dss); - return NULL; - } - - return dss; -} - -static int dss_openssh_fmtkey(void *key, unsigned char *blob, int len) -{ - struct dss_key *dss = (struct dss_key *) key; - int bloblen, i; - - bloblen = - ssh2_bignum_length(dss->p) + - ssh2_bignum_length(dss->q) + - ssh2_bignum_length(dss->g) + - ssh2_bignum_length(dss->y) + - ssh2_bignum_length(dss->x); - - if (bloblen > len) - return bloblen; - - bloblen = 0; -#define ENC(x) \ - PUT_32BIT(blob+bloblen, ssh2_bignum_length((x))-4); bloblen += 4; \ - for (i = ssh2_bignum_length((x))-4; i-- ;) blob[bloblen++]=bignum_byte((x),i); - ENC(dss->p); - ENC(dss->q); - ENC(dss->g); - ENC(dss->y); - ENC(dss->x); - - return bloblen; -} - -static int dss_pubkey_bits(void *blob, int len) -{ - struct dss_key *dss; - int ret; - - dss = dss_newkey((char *) blob, len); - ret = bignum_bitcount(dss->p); - dss_freekey(dss); - - return ret; -} - -static unsigned char *dss_sign(void *key, char *data, int datalen, int *siglen) -{ - /* - * The basic DSS signing algorithm is: - * - * - invent a random k between 1 and q-1 (exclusive). - * - Compute r = (g^k mod p) mod q. - * - Compute s = k^-1 * (hash + x*r) mod q. - * - * This has the dangerous properties that: - * - * - if an attacker in possession of the public key _and_ the - * signature (for example, the host you just authenticated - * to) can guess your k, he can reverse the computation of s - * and work out x = r^-1 * (s*k - hash) mod q. That is, he - * can deduce the private half of your key, and masquerade - * as you for as long as the key is still valid. - * - * - since r is a function purely of k and the public key, if - * the attacker only has a _range of possibilities_ for k - * it's easy for him to work through them all and check each - * one against r; he'll never be unsure of whether he's got - * the right one. - * - * - if you ever sign two different hashes with the same k, it - * will be immediately obvious because the two signatures - * will have the same r, and moreover an attacker in - * possession of both signatures (and the public key of - * course) can compute k = (hash1-hash2) * (s1-s2)^-1 mod q, - * and from there deduce x as before. - * - * - the Bleichenbacher attack on DSA makes use of methods of - * generating k which are significantly non-uniformly - * distributed; in particular, generating a 160-bit random - * number and reducing it mod q is right out. - * - * For this reason we must be pretty careful about how we - * generate our k. Since this code runs on Windows, with no - * particularly good system entropy sources, we can't trust our - * RNG itself to produce properly unpredictable data. Hence, we - * use a totally different scheme instead. - * - * What we do is to take a SHA-512 (_big_) hash of the private - * key x, and then feed this into another SHA-512 hash that - * also includes the message hash being signed. That is: - * - * proto_k = SHA512 ( SHA512(x) || SHA160(message) ) - * - * This number is 512 bits long, so reducing it mod q won't be - * noticeably non-uniform. So - * - * k = proto_k mod q - * - * This has the interesting property that it's _deterministic_: - * signing the same hash twice with the same key yields the - * same signature. - * - * Despite this determinism, it's still not predictable to an - * attacker, because in order to repeat the SHA-512 - * construction that created it, the attacker would have to - * know the private key value x - and by assumption he doesn't, - * because if he knew that he wouldn't be attacking k! - * - * (This trick doesn't, _per se_, protect against reuse of k. - * Reuse of k is left to chance; all it does is prevent - * _excessively high_ chances of reuse of k due to entropy - * problems.) - * - * Thanks to Colin Plumb for the general idea of using x to - * ensure k is hard to guess, and to the Cambridge University - * Computer Security Group for helping to argue out all the - * fine details. - */ - struct dss_key *dss = (struct dss_key *) key; - SHA512_State ss; - unsigned char digest[20], digest512[64]; - Bignum proto_k, k, gkp, hash, kinv, hxr, r, s; - unsigned char *bytes; - int nbytes, i; - - SHA_Simple(data, datalen, digest); - - /* - * Hash some identifying text plus x. - */ - SHA512_Init(&ss); - SHA512_Bytes(&ss, "DSA deterministic k generator", 30); - sha512_mpint(&ss, dss->x); - SHA512_Final(&ss, digest512); - - /* - * Now hash that digest plus the message hash. - */ - SHA512_Init(&ss); - SHA512_Bytes(&ss, digest512, sizeof(digest512)); - SHA512_Bytes(&ss, digest, sizeof(digest)); - SHA512_Final(&ss, digest512); - - memset(&ss, 0, sizeof(ss)); - - /* - * Now convert the result into a bignum, and reduce it mod q. - */ - proto_k = bignum_from_bytes(digest512, 64); - k = bigmod(proto_k, dss->q); - freebn(proto_k); - - memset(digest512, 0, sizeof(digest512)); - - /* - * Now we have k, so just go ahead and compute the signature. - */ - gkp = modpow(dss->g, k, dss->p); /* g^k mod p */ - r = bigmod(gkp, dss->q); /* r = (g^k mod p) mod q */ - freebn(gkp); - - hash = bignum_from_bytes(digest, 20); - kinv = modinv(k, dss->q); /* k^-1 mod q */ - hxr = bigmuladd(dss->x, r, hash); /* hash + x*r */ - s = modmul(kinv, hxr, dss->q); /* s = k^-1 * (hash + x*r) mod q */ - freebn(hxr); - freebn(kinv); - freebn(hash); - - /* - * Signature blob is - * - * string "ssh-dss" - * string two 20-byte numbers r and s, end to end - * - * i.e. 4+7 + 4+40 bytes. - */ - nbytes = 4 + 7 + 4 + 40; - bytes = snewn(nbytes, unsigned char); - PUT_32BIT(bytes, 7); - memcpy(bytes + 4, "ssh-dss", 7); - PUT_32BIT(bytes + 4 + 7, 40); - for (i = 0; i < 20; i++) { - bytes[4 + 7 + 4 + i] = bignum_byte(r, 19 - i); - bytes[4 + 7 + 4 + 20 + i] = bignum_byte(s, 19 - i); - } - freebn(r); - freebn(s); - - *siglen = nbytes; - return bytes; -} - -const struct ssh_signkey ssh_dss = { - dss_newkey, - dss_freekey, - dss_fmtkey, - dss_public_blob, - dss_private_blob, - dss_createkey, - dss_openssh_createkey, - dss_openssh_fmtkey, - dss_pubkey_bits, - dss_fingerprint, - dss_verifysig, - dss_sign, - "ssh-dss", - "dss" -}; diff --git a/tools/plink/sshgss.h b/tools/plink/sshgss.h deleted file mode 100644 index 2115cb124..000000000 --- a/tools/plink/sshgss.h +++ /dev/null @@ -1,106 +0,0 @@ -#include "puttyps.h" - -#define SSH2_GSS_OIDTYPE 0x06 -typedef void *Ssh_gss_ctx; - -typedef enum Ssh_gss_stat { - SSH_GSS_OK = 0, - SSH_GSS_S_CONTINUE_NEEDED, - SSH_GSS_NO_MEM, - SSH_GSS_BAD_HOST_NAME, - SSH_GSS_FAILURE -} Ssh_gss_stat; - -#define SSH_GSS_S_COMPLETE SSH_GSS_OK - -#define SSH_GSS_CLEAR_BUF(buf) do { \ - (*buf).length = 0; \ - (*buf).value = NULL; \ -} while (0) - -/* Functions, provided by either wingss.c or uxgss.c */ - -/* - * Do startup-time initialisation for using GSSAPI. (On Windows, - * for instance, this dynamically loads the GSSAPI DLL and - * retrieves some function pointers.) - * - * Return value is 1 on success, or 0 if initialisation failed. - * - * May be called multiple times (since the most convenient place - * to call it _from_ is the ssh.c setup code), and will harmlessly - * return success if already initialised. - */ -int ssh_gss_init(void); - -/* - * Fills in buf with a string describing the GSSAPI mechanism in - * use. buf->data is not dynamically allocated. - */ -Ssh_gss_stat ssh_gss_indicate_mech(Ssh_gss_buf *buf); - -/* - * Converts a name such as a hostname into a GSSAPI internal form, - * which is placed in "out". The result should be freed by - * ssh_gss_release_name(). - */ -Ssh_gss_stat ssh_gss_import_name(char *in, Ssh_gss_name *out); - -/* - * Frees the contents of an Ssh_gss_name structure filled in by - * ssh_gss_import_name(). - */ -Ssh_gss_stat ssh_gss_release_name(Ssh_gss_name *name); - -/* - * The main GSSAPI security context setup function. The "out" - * parameter will need to be freed by ssh_gss_free_tok. - */ -Ssh_gss_stat ssh_gss_init_sec_context(Ssh_gss_ctx *ctx, Ssh_gss_name name, int delegate, - Ssh_gss_buf *in, Ssh_gss_buf *out); - -/* - * Frees the contents of an Ssh_gss_buf filled in by - * ssh_gss_init_sec_context(). Do not accidentally call this on - * something filled in by ssh_gss_get_mic() (which requires a - * different free function) or something filled in by any other - * way. - */ -Ssh_gss_stat ssh_gss_free_tok(Ssh_gss_buf *); - -/* - * Acquires the credentials to perform authentication in the first - * place. Needs to be freed by ssh_gss_release_cred(). - */ -Ssh_gss_stat ssh_gss_acquire_cred(Ssh_gss_ctx *); - -/* - * Frees the contents of an Ssh_gss_ctx filled in by - * ssh_gss_acquire_cred(). - */ -Ssh_gss_stat ssh_gss_release_cred(Ssh_gss_ctx *); - -/* - * Gets a MIC for some input data. "out" needs to be freed by - * ssh_gss_free_mic(). - */ -Ssh_gss_stat ssh_gss_get_mic(Ssh_gss_ctx ctx, Ssh_gss_buf *in, - Ssh_gss_buf *out); - -/* - * Frees the contents of an Ssh_gss_buf filled in by - * ssh_gss_get_mic(). Do not accidentally call this on something - * filled in by ssh_gss_init_sec_context() (which requires a - * different free function) or something filled in by any other - * way. - */ -Ssh_gss_stat ssh_gss_free_mic(Ssh_gss_buf *); - -/* - * Return an error message after authentication failed. The - * message string is returned in "buf", with buf->len giving the - * number of characters of printable message text and buf->data - * containing one more character which is a trailing NUL. - * buf->data should be manually freed by the caller. - */ -Ssh_gss_stat ssh_gss_display_status(Ssh_gss_ctx, Ssh_gss_buf *buf); diff --git a/tools/plink/sshmd5.c b/tools/plink/sshmd5.c deleted file mode 100644 index 80474dfad..000000000 --- a/tools/plink/sshmd5.c +++ /dev/null @@ -1,344 +0,0 @@ -#include "ssh.h" - -/* - * MD5 implementation for PuTTY. Written directly from the spec by - * Simon Tatham. - */ - -/* ---------------------------------------------------------------------- - * Core MD5 algorithm: processes 16-word blocks into a message digest. - */ - -#define F(x,y,z) ( ((x) & (y)) | ((~(x)) & (z)) ) -#define G(x,y,z) ( ((x) & (z)) | ((~(z)) & (y)) ) -#define H(x,y,z) ( (x) ^ (y) ^ (z) ) -#define I(x,y,z) ( (y) ^ ( (x) | ~(z) ) ) - -#define rol(x,y) ( ((x) << (y)) | (((uint32)x) >> (32-y)) ) - -#define subround(f,w,x,y,z,k,s,ti) \ - w = x + rol(w + f(x,y,z) + block[k] + ti, s) - -static void MD5_Core_Init(MD5_Core_State * s) -{ - s->h[0] = 0x67452301; - s->h[1] = 0xefcdab89; - s->h[2] = 0x98badcfe; - s->h[3] = 0x10325476; -} - -static void MD5_Block(MD5_Core_State * s, uint32 * block) -{ - uint32 a, b, c, d; - - a = s->h[0]; - b = s->h[1]; - c = s->h[2]; - d = s->h[3]; - - subround(F, a, b, c, d, 0, 7, 0xd76aa478); - subround(F, d, a, b, c, 1, 12, 0xe8c7b756); - subround(F, c, d, a, b, 2, 17, 0x242070db); - subround(F, b, c, d, a, 3, 22, 0xc1bdceee); - subround(F, a, b, c, d, 4, 7, 0xf57c0faf); - subround(F, d, a, b, c, 5, 12, 0x4787c62a); - subround(F, c, d, a, b, 6, 17, 0xa8304613); - subround(F, b, c, d, a, 7, 22, 0xfd469501); - subround(F, a, b, c, d, 8, 7, 0x698098d8); - subround(F, d, a, b, c, 9, 12, 0x8b44f7af); - subround(F, c, d, a, b, 10, 17, 0xffff5bb1); - subround(F, b, c, d, a, 11, 22, 0x895cd7be); - subround(F, a, b, c, d, 12, 7, 0x6b901122); - subround(F, d, a, b, c, 13, 12, 0xfd987193); - subround(F, c, d, a, b, 14, 17, 0xa679438e); - subround(F, b, c, d, a, 15, 22, 0x49b40821); - subround(G, a, b, c, d, 1, 5, 0xf61e2562); - subround(G, d, a, b, c, 6, 9, 0xc040b340); - subround(G, c, d, a, b, 11, 14, 0x265e5a51); - subround(G, b, c, d, a, 0, 20, 0xe9b6c7aa); - subround(G, a, b, c, d, 5, 5, 0xd62f105d); - subround(G, d, a, b, c, 10, 9, 0x02441453); - subround(G, c, d, a, b, 15, 14, 0xd8a1e681); - subround(G, b, c, d, a, 4, 20, 0xe7d3fbc8); - subround(G, a, b, c, d, 9, 5, 0x21e1cde6); - subround(G, d, a, b, c, 14, 9, 0xc33707d6); - subround(G, c, d, a, b, 3, 14, 0xf4d50d87); - subround(G, b, c, d, a, 8, 20, 0x455a14ed); - subround(G, a, b, c, d, 13, 5, 0xa9e3e905); - subround(G, d, a, b, c, 2, 9, 0xfcefa3f8); - subround(G, c, d, a, b, 7, 14, 0x676f02d9); - subround(G, b, c, d, a, 12, 20, 0x8d2a4c8a); - subround(H, a, b, c, d, 5, 4, 0xfffa3942); - subround(H, d, a, b, c, 8, 11, 0x8771f681); - subround(H, c, d, a, b, 11, 16, 0x6d9d6122); - subround(H, b, c, d, a, 14, 23, 0xfde5380c); - subround(H, a, b, c, d, 1, 4, 0xa4beea44); - subround(H, d, a, b, c, 4, 11, 0x4bdecfa9); - subround(H, c, d, a, b, 7, 16, 0xf6bb4b60); - subround(H, b, c, d, a, 10, 23, 0xbebfbc70); - subround(H, a, b, c, d, 13, 4, 0x289b7ec6); - subround(H, d, a, b, c, 0, 11, 0xeaa127fa); - subround(H, c, d, a, b, 3, 16, 0xd4ef3085); - subround(H, b, c, d, a, 6, 23, 0x04881d05); - subround(H, a, b, c, d, 9, 4, 0xd9d4d039); - subround(H, d, a, b, c, 12, 11, 0xe6db99e5); - subround(H, c, d, a, b, 15, 16, 0x1fa27cf8); - subround(H, b, c, d, a, 2, 23, 0xc4ac5665); - subround(I, a, b, c, d, 0, 6, 0xf4292244); - subround(I, d, a, b, c, 7, 10, 0x432aff97); - subround(I, c, d, a, b, 14, 15, 0xab9423a7); - subround(I, b, c, d, a, 5, 21, 0xfc93a039); - subround(I, a, b, c, d, 12, 6, 0x655b59c3); - subround(I, d, a, b, c, 3, 10, 0x8f0ccc92); - subround(I, c, d, a, b, 10, 15, 0xffeff47d); - subround(I, b, c, d, a, 1, 21, 0x85845dd1); - subround(I, a, b, c, d, 8, 6, 0x6fa87e4f); - subround(I, d, a, b, c, 15, 10, 0xfe2ce6e0); - subround(I, c, d, a, b, 6, 15, 0xa3014314); - subround(I, b, c, d, a, 13, 21, 0x4e0811a1); - subround(I, a, b, c, d, 4, 6, 0xf7537e82); - subround(I, d, a, b, c, 11, 10, 0xbd3af235); - subround(I, c, d, a, b, 2, 15, 0x2ad7d2bb); - subround(I, b, c, d, a, 9, 21, 0xeb86d391); - - s->h[0] += a; - s->h[1] += b; - s->h[2] += c; - s->h[3] += d; -} - -/* ---------------------------------------------------------------------- - * Outer MD5 algorithm: take an arbitrary length byte string, - * convert it into 16-word blocks with the prescribed padding at - * the end, and pass those blocks to the core MD5 algorithm. - */ - -#define BLKSIZE 64 - -void MD5Init(struct MD5Context *s) -{ - MD5_Core_Init(&s->core); - s->blkused = 0; - s->lenhi = s->lenlo = 0; -} - -void MD5Update(struct MD5Context *s, unsigned char const *p, unsigned len) -{ - unsigned char *q = (unsigned char *) p; - uint32 wordblock[16]; - uint32 lenw = len; - int i; - - /* - * Update the length field. - */ - s->lenlo += lenw; - s->lenhi += (s->lenlo < lenw); - - if (s->blkused + len < BLKSIZE) { - /* - * Trivial case: just add to the block. - */ - memcpy(s->block + s->blkused, q, len); - s->blkused += len; - } else { - /* - * We must complete and process at least one block. - */ - while (s->blkused + len >= BLKSIZE) { - memcpy(s->block + s->blkused, q, BLKSIZE - s->blkused); - q += BLKSIZE - s->blkused; - len -= BLKSIZE - s->blkused; - /* Now process the block. Gather bytes little-endian into words */ - for (i = 0; i < 16; i++) { - wordblock[i] = - (((uint32) s->block[i * 4 + 3]) << 24) | - (((uint32) s->block[i * 4 + 2]) << 16) | - (((uint32) s->block[i * 4 + 1]) << 8) | - (((uint32) s->block[i * 4 + 0]) << 0); - } - MD5_Block(&s->core, wordblock); - s->blkused = 0; - } - memcpy(s->block, q, len); - s->blkused = len; - } -} - -void MD5Final(unsigned char output[16], struct MD5Context *s) -{ - int i; - unsigned pad; - unsigned char c[64]; - uint32 lenhi, lenlo; - - if (s->blkused >= 56) - pad = 56 + 64 - s->blkused; - else - pad = 56 - s->blkused; - - lenhi = (s->lenhi << 3) | (s->lenlo >> (32 - 3)); - lenlo = (s->lenlo << 3); - - memset(c, 0, pad); - c[0] = 0x80; - MD5Update(s, c, pad); - - c[7] = (lenhi >> 24) & 0xFF; - c[6] = (lenhi >> 16) & 0xFF; - c[5] = (lenhi >> 8) & 0xFF; - c[4] = (lenhi >> 0) & 0xFF; - c[3] = (lenlo >> 24) & 0xFF; - c[2] = (lenlo >> 16) & 0xFF; - c[1] = (lenlo >> 8) & 0xFF; - c[0] = (lenlo >> 0) & 0xFF; - - MD5Update(s, c, 8); - - for (i = 0; i < 4; i++) { - output[4 * i + 3] = (s->core.h[i] >> 24) & 0xFF; - output[4 * i + 2] = (s->core.h[i] >> 16) & 0xFF; - output[4 * i + 1] = (s->core.h[i] >> 8) & 0xFF; - output[4 * i + 0] = (s->core.h[i] >> 0) & 0xFF; - } -} - -void MD5Simple(void const *p, unsigned len, unsigned char output[16]) -{ - struct MD5Context s; - - MD5Init(&s); - MD5Update(&s, (unsigned char const *)p, len); - MD5Final(output, &s); -} - -/* ---------------------------------------------------------------------- - * The above is the MD5 algorithm itself. Now we implement the - * HMAC wrapper on it. - * - * Some of these functions are exported directly, because they are - * useful elsewhere (SOCKS5 CHAP authentication uses HMAC-MD5). - */ - -void *hmacmd5_make_context(void) -{ - return snewn(3, struct MD5Context); -} - -void hmacmd5_free_context(void *handle) -{ - sfree(handle); -} - -void hmacmd5_key(void *handle, void const *keyv, int len) -{ - struct MD5Context *keys = (struct MD5Context *)handle; - unsigned char foo[64]; - unsigned char const *key = (unsigned char const *)keyv; - int i; - - memset(foo, 0x36, 64); - for (i = 0; i < len && i < 64; i++) - foo[i] ^= key[i]; - MD5Init(&keys[0]); - MD5Update(&keys[0], foo, 64); - - memset(foo, 0x5C, 64); - for (i = 0; i < len && i < 64; i++) - foo[i] ^= key[i]; - MD5Init(&keys[1]); - MD5Update(&keys[1], foo, 64); - - memset(foo, 0, 64); /* burn the evidence */ -} - -static void hmacmd5_key_16(void *handle, unsigned char *key) -{ - hmacmd5_key(handle, key, 16); -} - -static void hmacmd5_start(void *handle) -{ - struct MD5Context *keys = (struct MD5Context *)handle; - - keys[2] = keys[0]; /* structure copy */ -} - -static void hmacmd5_bytes(void *handle, unsigned char const *blk, int len) -{ - struct MD5Context *keys = (struct MD5Context *)handle; - MD5Update(&keys[2], blk, len); -} - -static void hmacmd5_genresult(void *handle, unsigned char *hmac) -{ - struct MD5Context *keys = (struct MD5Context *)handle; - struct MD5Context s; - unsigned char intermediate[16]; - - s = keys[2]; /* structure copy */ - MD5Final(intermediate, &s); - s = keys[1]; /* structure copy */ - MD5Update(&s, intermediate, 16); - MD5Final(hmac, &s); -} - -static int hmacmd5_verresult(void *handle, unsigned char const *hmac) -{ - unsigned char correct[16]; - hmacmd5_genresult(handle, correct); - return !memcmp(correct, hmac, 16); -} - -static void hmacmd5_do_hmac_internal(void *handle, - unsigned char const *blk, int len, - unsigned char const *blk2, int len2, - unsigned char *hmac) -{ - hmacmd5_start(handle); - hmacmd5_bytes(handle, blk, len); - if (blk2) hmacmd5_bytes(handle, blk2, len2); - hmacmd5_genresult(handle, hmac); -} - -void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len, - unsigned char *hmac) -{ - hmacmd5_do_hmac_internal(handle, blk, len, NULL, 0, hmac); -} - -static void hmacmd5_do_hmac_ssh(void *handle, unsigned char const *blk, int len, - unsigned long seq, unsigned char *hmac) -{ - unsigned char seqbuf[16]; - - seqbuf[0] = (unsigned char) ((seq >> 24) & 0xFF); - seqbuf[1] = (unsigned char) ((seq >> 16) & 0xFF); - seqbuf[2] = (unsigned char) ((seq >> 8) & 0xFF); - seqbuf[3] = (unsigned char) ((seq) & 0xFF); - - hmacmd5_do_hmac_internal(handle, seqbuf, 4, blk, len, hmac); -} - -static void hmacmd5_generate(void *handle, unsigned char *blk, int len, - unsigned long seq) -{ - hmacmd5_do_hmac_ssh(handle, blk, len, seq, blk + len); -} - -static int hmacmd5_verify(void *handle, unsigned char *blk, int len, - unsigned long seq) -{ - unsigned char correct[16]; - hmacmd5_do_hmac_ssh(handle, blk, len, seq, correct); - return !memcmp(correct, blk + len, 16); -} - -const struct ssh_mac ssh_hmac_md5 = { - hmacmd5_make_context, hmacmd5_free_context, hmacmd5_key_16, - hmacmd5_generate, hmacmd5_verify, - hmacmd5_start, hmacmd5_bytes, hmacmd5_genresult, hmacmd5_verresult, - "hmac-md5", - 16, - "HMAC-MD5" -}; diff --git a/tools/plink/sshpubk.c b/tools/plink/sshpubk.c deleted file mode 100644 index 7b5a69071..000000000 --- a/tools/plink/sshpubk.c +++ /dev/null @@ -1,1217 +0,0 @@ -/* - * Generic SSH public-key handling operations. In particular, - * reading of SSH public-key files, and also the generic `sign' - * operation for SSH-2 (which checks the type of the key and - * dispatches to the appropriate key-type specific function). - */ - -#include -#include -#include - -#include "putty.h" -#include "ssh.h" -#include "misc.h" - -#define rsa_signature "SSH PRIVATE KEY FILE FORMAT 1.1\n" - -#define BASE64_TOINT(x) ( (x)-'A'<26 ? (x)-'A'+0 :\ - (x)-'a'<26 ? (x)-'a'+26 :\ - (x)-'0'<10 ? (x)-'0'+52 :\ - (x)=='+' ? 62 : \ - (x)=='/' ? 63 : 0 ) - -static int loadrsakey_main(FILE * fp, struct RSAKey *key, int pub_only, - char **commentptr, char *passphrase, - const char **error) -{ - unsigned char buf[16384]; - unsigned char keybuf[16]; - int len; - int i, j, ciphertype; - int ret = 0; - struct MD5Context md5c; - char *comment; - - *error = NULL; - - /* Slurp the whole file (minus the header) into a buffer. */ - len = fread(buf, 1, sizeof(buf), fp); - fclose(fp); - if (len < 0 || len == sizeof(buf)) { - *error = "error reading file"; - goto end; /* file too big or not read */ - } - - i = 0; - *error = "file format error"; - - /* - * A zero byte. (The signature includes a terminating NUL.) - */ - if (len - i < 1 || buf[i] != 0) - goto end; - i++; - - /* One byte giving encryption type, and one reserved uint32. */ - if (len - i < 1) - goto end; - ciphertype = buf[i]; - if (ciphertype != 0 && ciphertype != SSH_CIPHER_3DES) - goto end; - i++; - if (len - i < 4) - goto end; /* reserved field not present */ - if (buf[i] != 0 || buf[i + 1] != 0 || buf[i + 2] != 0 - || buf[i + 3] != 0) goto end; /* reserved field nonzero, panic! */ - i += 4; - - /* Now the serious stuff. An ordinary SSH-1 public key. */ - i += makekey(buf + i, len, key, NULL, 1); - if (i < 0) - goto end; /* overran */ - - /* Next, the comment field. */ - j = GET_32BIT(buf + i); - i += 4; - if (len - i < j) - goto end; - comment = snewn(j + 1, char); - if (comment) { - memcpy(comment, buf + i, j); - comment[j] = '\0'; - } - i += j; - if (commentptr) - *commentptr = dupstr(comment); - if (key) - key->comment = comment; - else - sfree(comment); - - if (pub_only) { - ret = 1; - goto end; - } - - if (!key) { - ret = ciphertype != 0; - *error = NULL; - goto end; - } - - /* - * Decrypt remainder of buffer. - */ - if (ciphertype) { - MD5Init(&md5c); - MD5Update(&md5c, (unsigned char *)passphrase, strlen(passphrase)); - MD5Final(keybuf, &md5c); - des3_decrypt_pubkey(keybuf, buf + i, (len - i + 7) & ~7); - memset(keybuf, 0, sizeof(keybuf)); /* burn the evidence */ - } - - /* - * We are now in the secret part of the key. The first four - * bytes should be of the form a, b, a, b. - */ - if (len - i < 4) - goto end; - if (buf[i] != buf[i + 2] || buf[i + 1] != buf[i + 3]) { - *error = "wrong passphrase"; - ret = -1; - goto end; - } - i += 4; - - /* - * After that, we have one further bignum which is our - * decryption exponent, and then the three auxiliary values - * (iqmp, q, p). - */ - j = makeprivate(buf + i, len - i, key); - if (j < 0) goto end; - i += j; - j = ssh1_read_bignum(buf + i, len - i, &key->iqmp); - if (j < 0) goto end; - i += j; - j = ssh1_read_bignum(buf + i, len - i, &key->q); - if (j < 0) goto end; - i += j; - j = ssh1_read_bignum(buf + i, len - i, &key->p); - if (j < 0) goto end; - i += j; - - if (!rsa_verify(key)) { - *error = "rsa_verify failed"; - freersakey(key); - ret = 0; - } else - ret = 1; - - end: - memset(buf, 0, sizeof(buf)); /* burn the evidence */ - return ret; -} - -int loadrsakey(const Filename *filename, struct RSAKey *key, char *passphrase, - const char **errorstr) -{ - FILE *fp; - char buf[64]; - int ret = 0; - const char *error = NULL; - - fp = f_open(*filename, "rb", FALSE); - if (!fp) { - error = "can't open file"; - goto end; - } - - /* - * Read the first line of the file and see if it's a v1 private - * key file. - */ - if (fgets(buf, sizeof(buf), fp) && !strcmp(buf, rsa_signature)) { - /* - * This routine will take care of calling fclose() for us. - */ - ret = loadrsakey_main(fp, key, FALSE, NULL, passphrase, &error); - fp = NULL; - goto end; - } - - /* - * Otherwise, we have nothing. Return empty-handed. - */ - error = "not an SSH-1 RSA file"; - - end: - if (fp) - fclose(fp); - if ((ret != 1) && errorstr) - *errorstr = error; - return ret; -} - -/* - * See whether an RSA key is encrypted. Return its comment field as - * well. - */ -int rsakey_encrypted(const Filename *filename, char **comment) -{ - FILE *fp; - char buf[64]; - - fp = f_open(*filename, "rb", FALSE); - if (!fp) - return 0; /* doesn't even exist */ - - /* - * Read the first line of the file and see if it's a v1 private - * key file. - */ - if (fgets(buf, sizeof(buf), fp) && !strcmp(buf, rsa_signature)) { - const char *dummy; - /* - * This routine will take care of calling fclose() for us. - */ - return loadrsakey_main(fp, NULL, FALSE, comment, NULL, &dummy); - } - fclose(fp); - return 0; /* wasn't the right kind of file */ -} - -/* - * Return a malloc'ed chunk of memory containing the public blob of - * an RSA key, as given in the agent protocol (modulus bits, - * exponent, modulus). - */ -int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen, - char **commentptr, const char **errorstr) -{ - FILE *fp; - char buf[64]; - struct RSAKey key; - int ret; - const char *error = NULL; - - /* Default return if we fail. */ - *blob = NULL; - *bloblen = 0; - ret = 0; - - fp = f_open(*filename, "rb", FALSE); - if (!fp) { - error = "can't open file"; - goto end; - } - - /* - * Read the first line of the file and see if it's a v1 private - * key file. - */ - if (fgets(buf, sizeof(buf), fp) && !strcmp(buf, rsa_signature)) { - memset(&key, 0, sizeof(key)); - if (loadrsakey_main(fp, &key, TRUE, commentptr, NULL, &error)) { - *blob = rsa_public_blob(&key, bloblen); - freersakey(&key); - ret = 1; - fp = NULL; - } - } else { - error = "not an SSH-1 RSA file"; - } - - end: - if (fp) - fclose(fp); - if ((ret != 1) && errorstr) - *errorstr = error; - return ret; -} - -/* - * Save an RSA key file. Return nonzero on success. - */ -int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase) -{ - unsigned char buf[16384]; - unsigned char keybuf[16]; - struct MD5Context md5c; - unsigned char *p, *estart; - FILE *fp; - - /* - * Write the initial signature. - */ - p = buf; - memcpy(p, rsa_signature, sizeof(rsa_signature)); - p += sizeof(rsa_signature); - - /* - * One byte giving encryption type, and one reserved (zero) - * uint32. - */ - *p++ = (passphrase ? SSH_CIPHER_3DES : 0); - PUT_32BIT(p, 0); - p += 4; - - /* - * An ordinary SSH-1 public key consists of: a uint32 - * containing the bit count, then two bignums containing the - * modulus and exponent respectively. - */ - PUT_32BIT(p, bignum_bitcount(key->modulus)); - p += 4; - p += ssh1_write_bignum(p, key->modulus); - p += ssh1_write_bignum(p, key->exponent); - - /* - * A string containing the comment field. - */ - if (key->comment) { - PUT_32BIT(p, strlen(key->comment)); - p += 4; - memcpy(p, key->comment, strlen(key->comment)); - p += strlen(key->comment); - } else { - PUT_32BIT(p, 0); - p += 4; - } - - /* - * The encrypted portion starts here. - */ - estart = p; - - /* - * Two bytes, then the same two bytes repeated. - */ - *p++ = random_byte(); - *p++ = random_byte(); - p[0] = p[-2]; - p[1] = p[-1]; - p += 2; - - /* - * Four more bignums: the decryption exponent, then iqmp, then - * q, then p. - */ - p += ssh1_write_bignum(p, key->private_exponent); - p += ssh1_write_bignum(p, key->iqmp); - p += ssh1_write_bignum(p, key->q); - p += ssh1_write_bignum(p, key->p); - - /* - * Now write zeros until the encrypted portion is a multiple of - * 8 bytes. - */ - while ((p - estart) % 8) - *p++ = '\0'; - - /* - * Now encrypt the encrypted portion. - */ - if (passphrase) { - MD5Init(&md5c); - MD5Update(&md5c, (unsigned char *)passphrase, strlen(passphrase)); - MD5Final(keybuf, &md5c); - des3_encrypt_pubkey(keybuf, estart, p - estart); - memset(keybuf, 0, sizeof(keybuf)); /* burn the evidence */ - } - - /* - * Done. Write the result to the file. - */ - fp = f_open(*filename, "wb", TRUE); - if (fp) { - int ret = (fwrite(buf, 1, p - buf, fp) == (size_t) (p - buf)); - if (fclose(fp)) - ret = 0; - return ret; - } else - return 0; -} - -/* ---------------------------------------------------------------------- - * SSH-2 private key load/store functions. - */ - -/* - * PuTTY's own format for SSH-2 keys is as follows: - * - * The file is text. Lines are terminated by CRLF, although CR-only - * and LF-only are tolerated on input. - * - * The first line says "PuTTY-User-Key-File-2: " plus the name of the - * algorithm ("ssh-dss", "ssh-rsa" etc). - * - * The next line says "Encryption: " plus an encryption type. - * Currently the only supported encryption types are "aes256-cbc" - * and "none". - * - * The next line says "Comment: " plus the comment string. - * - * Next there is a line saying "Public-Lines: " plus a number N. - * The following N lines contain a base64 encoding of the public - * part of the key. This is encoded as the standard SSH-2 public key - * blob (with no initial length): so for RSA, for example, it will - * read - * - * string "ssh-rsa" - * mpint exponent - * mpint modulus - * - * Next, there is a line saying "Private-Lines: " plus a number N, - * and then N lines containing the (potentially encrypted) private - * part of the key. For the key type "ssh-rsa", this will be - * composed of - * - * mpint private_exponent - * mpint p (the larger of the two primes) - * mpint q (the smaller prime) - * mpint iqmp (the inverse of q modulo p) - * data padding (to reach a multiple of the cipher block size) - * - * And for "ssh-dss", it will be composed of - * - * mpint x (the private key parameter) - * [ string hash 20-byte hash of mpints p || q || g only in old format ] - * - * Finally, there is a line saying "Private-MAC: " plus a hex - * representation of a HMAC-SHA-1 of: - * - * string name of algorithm ("ssh-dss", "ssh-rsa") - * string encryption type - * string comment - * string public-blob - * string private-plaintext (the plaintext version of the - * private part, including the final - * padding) - * - * The key to the MAC is itself a SHA-1 hash of: - * - * data "putty-private-key-file-mac-key" - * data passphrase - * - * (An empty passphrase is used for unencrypted keys.) - * - * If the key is encrypted, the encryption key is derived from the - * passphrase by means of a succession of SHA-1 hashes. Each hash - * is the hash of: - * - * uint32 sequence-number - * data passphrase - * - * where the sequence-number increases from zero. As many of these - * hashes are used as necessary. - * - * For backwards compatibility with snapshots between 0.51 and - * 0.52, we also support the older key file format, which begins - * with "PuTTY-User-Key-File-1" (version number differs). In this - * format the Private-MAC: field only covers the private-plaintext - * field and nothing else (and without the 4-byte string length on - * the front too). Moreover, the Private-MAC: field can be replaced - * with a Private-Hash: field which is a plain SHA-1 hash instead of - * an HMAC (this was generated for unencrypted keys). - */ - -static int read_header(FILE * fp, char *header) -{ - int len = 39; - int c; - - while (len > 0) { - c = fgetc(fp); - if (c == '\n' || c == '\r' || c == EOF) - return 0; /* failure */ - if (c == ':') { - c = fgetc(fp); - if (c != ' ') - return 0; - *header = '\0'; - return 1; /* success! */ - } - if (len == 0) - return 0; /* failure */ - *header++ = c; - len--; - } - return 0; /* failure */ -} - -static char *read_body(FILE * fp) -{ - char *text; - int len; - int size; - int c; - - size = 128; - text = snewn(size, char); - len = 0; - text[len] = '\0'; - - while (1) { - c = fgetc(fp); - if (c == '\r' || c == '\n' || c == EOF) { - if (c != EOF) { - c = fgetc(fp); - if (c != '\r' && c != '\n') - ungetc(c, fp); - } - return text; - } - if (len + 1 >= size) { - size += 128; - text = sresize(text, size, char); - } - text[len++] = c; - text[len] = '\0'; - } -} - -int base64_decode_atom(char *atom, unsigned char *out) -{ - int vals[4]; - int i, v, len; - unsigned word; - char c; - - for (i = 0; i < 4; i++) { - c = atom[i]; - if (c >= 'A' && c <= 'Z') - v = c - 'A'; - else if (c >= 'a' && c <= 'z') - v = c - 'a' + 26; - else if (c >= '0' && c <= '9') - v = c - '0' + 52; - else if (c == '+') - v = 62; - else if (c == '/') - v = 63; - else if (c == '=') - v = -1; - else - return 0; /* invalid atom */ - vals[i] = v; - } - - if (vals[0] == -1 || vals[1] == -1) - return 0; - if (vals[2] == -1 && vals[3] != -1) - return 0; - - if (vals[3] != -1) - len = 3; - else if (vals[2] != -1) - len = 2; - else - len = 1; - - word = ((vals[0] << 18) | - (vals[1] << 12) | ((vals[2] & 0x3F) << 6) | (vals[3] & 0x3F)); - out[0] = (word >> 16) & 0xFF; - if (len > 1) - out[1] = (word >> 8) & 0xFF; - if (len > 2) - out[2] = word & 0xFF; - return len; -} - -static unsigned char *read_blob(FILE * fp, int nlines, int *bloblen) -{ - unsigned char *blob; - char *line; - int linelen, len; - int i, j, k; - - /* We expect at most 64 base64 characters, ie 48 real bytes, per line. */ - blob = snewn(48 * nlines, unsigned char); - len = 0; - for (i = 0; i < nlines; i++) { - line = read_body(fp); - if (!line) { - sfree(blob); - return NULL; - } - linelen = strlen(line); - if (linelen % 4 != 0 || linelen > 64) { - sfree(blob); - sfree(line); - return NULL; - } - for (j = 0; j < linelen; j += 4) { - k = base64_decode_atom(line + j, blob + len); - if (!k) { - sfree(line); - sfree(blob); - return NULL; - } - len += k; - } - sfree(line); - } - *bloblen = len; - return blob; -} - -/* - * Magic error return value for when the passphrase is wrong. - */ -struct ssh2_userkey ssh2_wrong_passphrase = { - NULL, NULL, NULL -}; - -const struct ssh_signkey *find_pubkey_alg(const char *name) -{ - if (!strcmp(name, "ssh-rsa")) - return &ssh_rsa; - else if (!strcmp(name, "ssh-dss")) - return &ssh_dss; - else - return NULL; -} - -struct ssh2_userkey *ssh2_load_userkey(const Filename *filename, - char *passphrase, const char **errorstr) -{ - FILE *fp; - char header[40], *b, *encryption, *comment, *mac; - const struct ssh_signkey *alg; - struct ssh2_userkey *ret; - int cipher, cipherblk; - unsigned char *public_blob, *private_blob; - int public_blob_len, private_blob_len; - int i, is_mac, old_fmt; - int passlen = passphrase ? strlen(passphrase) : 0; - const char *error = NULL; - - ret = NULL; /* return NULL for most errors */ - encryption = comment = mac = NULL; - public_blob = private_blob = NULL; - - fp = f_open(*filename, "rb", FALSE); - if (!fp) { - error = "can't open file"; - goto error; - } - - /* Read the first header line which contains the key type. */ - if (!read_header(fp, header)) - goto error; - if (0 == strcmp(header, "PuTTY-User-Key-File-2")) { - old_fmt = 0; - } else if (0 == strcmp(header, "PuTTY-User-Key-File-1")) { - /* this is an old key file; warn and then continue */ - old_keyfile_warning(); - old_fmt = 1; - } else { - error = "not a PuTTY SSH-2 private key"; - goto error; - } - error = "file format error"; - if ((b = read_body(fp)) == NULL) - goto error; - /* Select key algorithm structure. */ - alg = find_pubkey_alg(b); - if (!alg) { - sfree(b); - goto error; - } - sfree(b); - - /* Read the Encryption header line. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Encryption")) - goto error; - if ((encryption = read_body(fp)) == NULL) - goto error; - if (!strcmp(encryption, "aes256-cbc")) { - cipher = 1; - cipherblk = 16; - } else if (!strcmp(encryption, "none")) { - cipher = 0; - cipherblk = 1; - } else { - sfree(encryption); - goto error; - } - - /* Read the Comment header line. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Comment")) - goto error; - if ((comment = read_body(fp)) == NULL) - goto error; - - /* Read the Public-Lines header line and the public blob. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Public-Lines")) - goto error; - if ((b = read_body(fp)) == NULL) - goto error; - i = atoi(b); - sfree(b); - if ((public_blob = read_blob(fp, i, &public_blob_len)) == NULL) - goto error; - - /* Read the Private-Lines header line and the Private blob. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Private-Lines")) - goto error; - if ((b = read_body(fp)) == NULL) - goto error; - i = atoi(b); - sfree(b); - if ((private_blob = read_blob(fp, i, &private_blob_len)) == NULL) - goto error; - - /* Read the Private-MAC or Private-Hash header line. */ - if (!read_header(fp, header)) - goto error; - if (0 == strcmp(header, "Private-MAC")) { - if ((mac = read_body(fp)) == NULL) - goto error; - is_mac = 1; - } else if (0 == strcmp(header, "Private-Hash") && old_fmt) { - if ((mac = read_body(fp)) == NULL) - goto error; - is_mac = 0; - } else - goto error; - - fclose(fp); - fp = NULL; - - /* - * Decrypt the private blob. - */ - if (cipher) { - unsigned char key[40]; - SHA_State s; - - if (!passphrase) - goto error; - if (private_blob_len % cipherblk) - goto error; - - SHA_Init(&s); - SHA_Bytes(&s, "\0\0\0\0", 4); - SHA_Bytes(&s, passphrase, passlen); - SHA_Final(&s, key + 0); - SHA_Init(&s); - SHA_Bytes(&s, "\0\0\0\1", 4); - SHA_Bytes(&s, passphrase, passlen); - SHA_Final(&s, key + 20); - aes256_decrypt_pubkey(key, private_blob, private_blob_len); - } - - /* - * Verify the MAC. - */ - { - char realmac[41]; - unsigned char binary[20]; - unsigned char *macdata; - int maclen; - int free_macdata; - - if (old_fmt) { - /* MAC (or hash) only covers the private blob. */ - macdata = private_blob; - maclen = private_blob_len; - free_macdata = 0; - } else { - unsigned char *p; - int namelen = strlen(alg->name); - int enclen = strlen(encryption); - int commlen = strlen(comment); - maclen = (4 + namelen + - 4 + enclen + - 4 + commlen + - 4 + public_blob_len + - 4 + private_blob_len); - macdata = snewn(maclen, unsigned char); - p = macdata; -#define DO_STR(s,len) PUT_32BIT(p,(len));memcpy(p+4,(s),(len));p+=4+(len) - DO_STR(alg->name, namelen); - DO_STR(encryption, enclen); - DO_STR(comment, commlen); - DO_STR(public_blob, public_blob_len); - DO_STR(private_blob, private_blob_len); - - free_macdata = 1; - } - - if (is_mac) { - SHA_State s; - unsigned char mackey[20]; - char header[] = "putty-private-key-file-mac-key"; - - SHA_Init(&s); - SHA_Bytes(&s, header, sizeof(header)-1); - if (cipher && passphrase) - SHA_Bytes(&s, passphrase, passlen); - SHA_Final(&s, mackey); - - hmac_sha1_simple(mackey, 20, macdata, maclen, binary); - - memset(mackey, 0, sizeof(mackey)); - memset(&s, 0, sizeof(s)); - } else { - SHA_Simple(macdata, maclen, binary); - } - - if (free_macdata) { - memset(macdata, 0, maclen); - sfree(macdata); - } - - for (i = 0; i < 20; i++) - sprintf(realmac + 2 * i, "%02x", binary[i]); - - if (strcmp(mac, realmac)) { - /* An incorrect MAC is an unconditional Error if the key is - * unencrypted. Otherwise, it means Wrong Passphrase. */ - if (cipher) { - error = "wrong passphrase"; - ret = SSH2_WRONG_PASSPHRASE; - } else { - error = "MAC failed"; - ret = NULL; - } - goto error; - } - } - sfree(mac); - - /* - * Create and return the key. - */ - ret = snew(struct ssh2_userkey); - ret->alg = alg; - ret->comment = comment; - ret->data = alg->createkey(public_blob, public_blob_len, - private_blob, private_blob_len); - if (!ret->data) { - sfree(ret->comment); - sfree(ret); - ret = NULL; - error = "createkey failed"; - goto error; - } - sfree(public_blob); - sfree(private_blob); - sfree(encryption); - if (errorstr) - *errorstr = NULL; - return ret; - - /* - * Error processing. - */ - error: - if (fp) - fclose(fp); - if (comment) - sfree(comment); - if (encryption) - sfree(encryption); - if (mac) - sfree(mac); - if (public_blob) - sfree(public_blob); - if (private_blob) - sfree(private_blob); - if (errorstr) - *errorstr = error; - return ret; -} - -unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm, - int *pub_blob_len, char **commentptr, - const char **errorstr) -{ - FILE *fp; - char header[40], *b; - const struct ssh_signkey *alg; - unsigned char *public_blob; - int public_blob_len; - int i; - const char *error = NULL; - char *comment; - - public_blob = NULL; - - fp = f_open(*filename, "rb", FALSE); - if (!fp) { - error = "can't open file"; - goto error; - } - - /* Read the first header line which contains the key type. */ - if (!read_header(fp, header) - || (0 != strcmp(header, "PuTTY-User-Key-File-2") && - 0 != strcmp(header, "PuTTY-User-Key-File-1"))) { - error = "not a PuTTY SSH-2 private key"; - goto error; - } - error = "file format error"; - if ((b = read_body(fp)) == NULL) - goto error; - /* Select key algorithm structure. */ - alg = find_pubkey_alg(b); - if (!alg) { - sfree(b); - goto error; - } - sfree(b); - - /* Read the Encryption header line. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Encryption")) - goto error; - if ((b = read_body(fp)) == NULL) - goto error; - sfree(b); /* we don't care */ - - /* Read the Comment header line. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Comment")) - goto error; - if ((comment = read_body(fp)) == NULL) - goto error; - - if (commentptr) - *commentptr = comment; - else - sfree(comment); - - /* Read the Public-Lines header line and the public blob. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Public-Lines")) - goto error; - if ((b = read_body(fp)) == NULL) - goto error; - i = atoi(b); - sfree(b); - if ((public_blob = read_blob(fp, i, &public_blob_len)) == NULL) - goto error; - - fclose(fp); - if (pub_blob_len) - *pub_blob_len = public_blob_len; - if (algorithm) - *algorithm = alg->name; - return public_blob; - - /* - * Error processing. - */ - error: - if (fp) - fclose(fp); - if (public_blob) - sfree(public_blob); - if (errorstr) - *errorstr = error; - return NULL; -} - -int ssh2_userkey_encrypted(const Filename *filename, char **commentptr) -{ - FILE *fp; - char header[40], *b, *comment; - int ret; - - if (commentptr) - *commentptr = NULL; - - fp = f_open(*filename, "rb", FALSE); - if (!fp) - return 0; - if (!read_header(fp, header) - || (0 != strcmp(header, "PuTTY-User-Key-File-2") && - 0 != strcmp(header, "PuTTY-User-Key-File-1"))) { - fclose(fp); - return 0; - } - if ((b = read_body(fp)) == NULL) { - fclose(fp); - return 0; - } - sfree(b); /* we don't care about key type here */ - /* Read the Encryption header line. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Encryption")) { - fclose(fp); - return 0; - } - if ((b = read_body(fp)) == NULL) { - fclose(fp); - return 0; - } - - /* Read the Comment header line. */ - if (!read_header(fp, header) || 0 != strcmp(header, "Comment")) { - fclose(fp); - sfree(b); - return 1; - } - if ((comment = read_body(fp)) == NULL) { - fclose(fp); - sfree(b); - return 1; - } - - if (commentptr) - *commentptr = comment; - - fclose(fp); - if (!strcmp(b, "aes256-cbc")) - ret = 1; - else - ret = 0; - sfree(b); - return ret; -} - -int base64_lines(int datalen) -{ - /* When encoding, we use 64 chars/line, which equals 48 real chars. */ - return (datalen + 47) / 48; -} - -void base64_encode(FILE * fp, unsigned char *data, int datalen, int cpl) -{ - int linelen = 0; - char out[4]; - int n, i; - - while (datalen > 0) { - n = (datalen < 3 ? datalen : 3); - base64_encode_atom(data, n, out); - data += n; - datalen -= n; - for (i = 0; i < 4; i++) { - if (linelen >= cpl) { - linelen = 0; - fputc('\n', fp); - } - fputc(out[i], fp); - linelen++; - } - } - fputc('\n', fp); -} - -int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key, - char *passphrase) -{ - FILE *fp; - unsigned char *pub_blob, *priv_blob, *priv_blob_encrypted; - int pub_blob_len, priv_blob_len, priv_encrypted_len; - int passlen; - int cipherblk; - int i; - char *cipherstr; - unsigned char priv_mac[20]; - - /* - * Fetch the key component blobs. - */ - pub_blob = key->alg->public_blob(key->data, &pub_blob_len); - priv_blob = key->alg->private_blob(key->data, &priv_blob_len); - if (!pub_blob || !priv_blob) { - sfree(pub_blob); - sfree(priv_blob); - return 0; - } - - /* - * Determine encryption details, and encrypt the private blob. - */ - if (passphrase) { - cipherstr = "aes256-cbc"; - cipherblk = 16; - } else { - cipherstr = "none"; - cipherblk = 1; - } - priv_encrypted_len = priv_blob_len + cipherblk - 1; - priv_encrypted_len -= priv_encrypted_len % cipherblk; - priv_blob_encrypted = snewn(priv_encrypted_len, unsigned char); - memset(priv_blob_encrypted, 0, priv_encrypted_len); - memcpy(priv_blob_encrypted, priv_blob, priv_blob_len); - /* Create padding based on the SHA hash of the unpadded blob. This prevents - * too easy a known-plaintext attack on the last block. */ - SHA_Simple(priv_blob, priv_blob_len, priv_mac); - assert(priv_encrypted_len - priv_blob_len < 20); - memcpy(priv_blob_encrypted + priv_blob_len, priv_mac, - priv_encrypted_len - priv_blob_len); - - /* Now create the MAC. */ - { - unsigned char *macdata; - int maclen; - unsigned char *p; - int namelen = strlen(key->alg->name); - int enclen = strlen(cipherstr); - int commlen = strlen(key->comment); - SHA_State s; - unsigned char mackey[20]; - char header[] = "putty-private-key-file-mac-key"; - - maclen = (4 + namelen + - 4 + enclen + - 4 + commlen + - 4 + pub_blob_len + - 4 + priv_encrypted_len); - macdata = snewn(maclen, unsigned char); - p = macdata; -#define DO_STR(s,len) PUT_32BIT(p,(len));memcpy(p+4,(s),(len));p+=4+(len) - DO_STR(key->alg->name, namelen); - DO_STR(cipherstr, enclen); - DO_STR(key->comment, commlen); - DO_STR(pub_blob, pub_blob_len); - DO_STR(priv_blob_encrypted, priv_encrypted_len); - - SHA_Init(&s); - SHA_Bytes(&s, header, sizeof(header)-1); - if (passphrase) - SHA_Bytes(&s, passphrase, strlen(passphrase)); - SHA_Final(&s, mackey); - hmac_sha1_simple(mackey, 20, macdata, maclen, priv_mac); - memset(macdata, 0, maclen); - sfree(macdata); - memset(mackey, 0, sizeof(mackey)); - memset(&s, 0, sizeof(s)); - } - - if (passphrase) { - unsigned char key[40]; - SHA_State s; - - passlen = strlen(passphrase); - - SHA_Init(&s); - SHA_Bytes(&s, "\0\0\0\0", 4); - SHA_Bytes(&s, passphrase, passlen); - SHA_Final(&s, key + 0); - SHA_Init(&s); - SHA_Bytes(&s, "\0\0\0\1", 4); - SHA_Bytes(&s, passphrase, passlen); - SHA_Final(&s, key + 20); - aes256_encrypt_pubkey(key, priv_blob_encrypted, - priv_encrypted_len); - - memset(key, 0, sizeof(key)); - memset(&s, 0, sizeof(s)); - } - - fp = f_open(*filename, "w", TRUE); - if (!fp) - return 0; - fprintf(fp, "PuTTY-User-Key-File-2: %s\n", key->alg->name); - fprintf(fp, "Encryption: %s\n", cipherstr); - fprintf(fp, "Comment: %s\n", key->comment); - fprintf(fp, "Public-Lines: %d\n", base64_lines(pub_blob_len)); - base64_encode(fp, pub_blob, pub_blob_len, 64); - fprintf(fp, "Private-Lines: %d\n", base64_lines(priv_encrypted_len)); - base64_encode(fp, priv_blob_encrypted, priv_encrypted_len, 64); - fprintf(fp, "Private-MAC: "); - for (i = 0; i < 20; i++) - fprintf(fp, "%02x", priv_mac[i]); - fprintf(fp, "\n"); - fclose(fp); - - sfree(pub_blob); - memset(priv_blob, 0, priv_blob_len); - sfree(priv_blob); - sfree(priv_blob_encrypted); - return 1; -} - -/* ---------------------------------------------------------------------- - * A function to determine the type of a private key file. Returns - * 0 on failure, 1 or 2 on success. - */ -int key_type(const Filename *filename) -{ - FILE *fp; - char buf[32]; - const char putty2_sig[] = "PuTTY-User-Key-File-"; - const char sshcom_sig[] = "---- BEGIN SSH2 ENCRYPTED PRIVAT"; - const char openssh_sig[] = "-----BEGIN "; - int i; - - fp = f_open(*filename, "r", FALSE); - if (!fp) - return SSH_KEYTYPE_UNOPENABLE; - i = fread(buf, 1, sizeof(buf), fp); - fclose(fp); - if (i < 0) - return SSH_KEYTYPE_UNOPENABLE; - if (i < 32) - return SSH_KEYTYPE_UNKNOWN; - if (!memcmp(buf, rsa_signature, sizeof(rsa_signature)-1)) - return SSH_KEYTYPE_SSH1; - if (!memcmp(buf, putty2_sig, sizeof(putty2_sig)-1)) - return SSH_KEYTYPE_SSH2; - if (!memcmp(buf, openssh_sig, sizeof(openssh_sig)-1)) - return SSH_KEYTYPE_OPENSSH; - if (!memcmp(buf, sshcom_sig, sizeof(sshcom_sig)-1)) - return SSH_KEYTYPE_SSHCOM; - return SSH_KEYTYPE_UNKNOWN; /* unrecognised or EOF */ -} - -/* - * Convert the type word to a string, for `wrong type' error - * messages. - */ -char *key_type_to_str(int type) -{ - switch (type) { - case SSH_KEYTYPE_UNOPENABLE: return "unable to open file"; break; - case SSH_KEYTYPE_UNKNOWN: return "not a private key"; break; - case SSH_KEYTYPE_SSH1: return "SSH-1 private key"; break; - case SSH_KEYTYPE_SSH2: return "PuTTY SSH-2 private key"; break; - case SSH_KEYTYPE_OPENSSH: return "OpenSSH SSH-2 private key"; break; - case SSH_KEYTYPE_SSHCOM: return "ssh.com SSH-2 private key"; break; - default: return "INTERNAL ERROR"; break; - } -} diff --git a/tools/plink/sshrand.c b/tools/plink/sshrand.c deleted file mode 100644 index 57ccc1393..000000000 --- a/tools/plink/sshrand.c +++ /dev/null @@ -1,246 +0,0 @@ -/* - * cryptographic random number generator for PuTTY's ssh client - */ - -#include "putty.h" -#include "ssh.h" - -/* Collect environmental noise every 5 minutes */ -#define NOISE_REGULAR_INTERVAL (5*60*TICKSPERSEC) - -void noise_get_heavy(void (*func) (void *, int)); -void noise_get_light(void (*func) (void *, int)); - -/* - * `pool' itself is a pool of random data which we actually use: we - * return bytes from `pool', at position `poolpos', until `poolpos' - * reaches the end of the pool. At this point we generate more - * random data, by adding noise, stirring well, and resetting - * `poolpos' to point to just past the beginning of the pool (not - * _the_ beginning, since otherwise we'd give away the whole - * contents of our pool, and attackers would just have to guess the - * next lot of noise). - * - * `incomingb' buffers acquired noise data, until it gets full, at - * which point the acquired noise is SHA'ed into `incoming' and - * `incomingb' is cleared. The noise in `incoming' is used as part - * of the noise for each stirring of the pool, in addition to local - * time, process listings, and other such stuff. - */ - -#define HASHINPUT 64 /* 64 bytes SHA input */ -#define HASHSIZE 20 /* 160 bits SHA output */ -#define POOLSIZE 1200 /* size of random pool */ - -struct RandPool { - unsigned char pool[POOLSIZE]; - int poolpos; - - unsigned char incoming[HASHSIZE]; - - unsigned char incomingb[HASHINPUT]; - int incomingpos; - - int stir_pending; -}; - -static struct RandPool pool; -int random_active = 0; -long next_noise_collection; - -static void random_stir(void) -{ - word32 block[HASHINPUT / sizeof(word32)]; - word32 digest[HASHSIZE / sizeof(word32)]; - int i, j, k; - - /* - * noise_get_light will call random_add_noise, which may call - * back to here. Prevent recursive stirs. - */ - if (pool.stir_pending) - return; - pool.stir_pending = TRUE; - - noise_get_light(random_add_noise); - - SHATransform((word32 *) pool.incoming, (word32 *) pool.incomingb); - pool.incomingpos = 0; - - /* - * Chunks of this code are blatantly endianness-dependent, but - * as it's all random bits anyway, WHO CARES? - */ - memcpy(digest, pool.incoming, sizeof(digest)); - - /* - * Make two passes over the pool. - */ - for (i = 0; i < 2; i++) { - - /* - * We operate SHA in CFB mode, repeatedly adding the same - * block of data to the digest. But we're also fiddling - * with the digest-so-far, so this shouldn't be Bad or - * anything. - */ - memcpy(block, pool.pool, sizeof(block)); - - /* - * Each pass processes the pool backwards in blocks of - * HASHSIZE, just so that in general we get the output of - * SHA before the corresponding input, in the hope that - * things will be that much less predictable that way - * round, when we subsequently return bytes ... - */ - for (j = POOLSIZE; (j -= HASHSIZE) >= 0;) { - /* - * XOR the bit of the pool we're processing into the - * digest. - */ - - for (k = 0; k < sizeof(digest) / sizeof(*digest); k++) - digest[k] ^= ((word32 *) (pool.pool + j))[k]; - - /* - * Munge our unrevealed first block of the pool into - * it. - */ - SHATransform(digest, block); - - /* - * Stick the result back into the pool. - */ - - for (k = 0; k < sizeof(digest) / sizeof(*digest); k++) - ((word32 *) (pool.pool + j))[k] = digest[k]; - } - } - - /* - * Might as well save this value back into `incoming', just so - * there'll be some extra bizarreness there. - */ - SHATransform(digest, block); - memcpy(pool.incoming, digest, sizeof(digest)); - - pool.poolpos = sizeof(pool.incoming); - - pool.stir_pending = FALSE; -} - -void random_add_noise(void *noise, int length) -{ - unsigned char *p = noise; - int i; - - if (!random_active) - return; - - /* - * This function processes HASHINPUT bytes into only HASHSIZE - * bytes, so _if_ we were getting incredibly high entropy - * sources then we would be throwing away valuable stuff. - */ - while (length >= (HASHINPUT - pool.incomingpos)) { - memcpy(pool.incomingb + pool.incomingpos, p, - HASHINPUT - pool.incomingpos); - p += HASHINPUT - pool.incomingpos; - length -= HASHINPUT - pool.incomingpos; - SHATransform((word32 *) pool.incoming, (word32 *) pool.incomingb); - for (i = 0; i < HASHSIZE; i++) { - pool.pool[pool.poolpos++] ^= pool.incomingb[i]; - if (pool.poolpos >= POOLSIZE) - pool.poolpos = 0; - } - if (pool.poolpos < HASHSIZE) - random_stir(); - - pool.incomingpos = 0; - } - - memcpy(pool.incomingb + pool.incomingpos, p, length); - pool.incomingpos += length; -} - -void random_add_heavynoise(void *noise, int length) -{ - unsigned char *p = noise; - int i; - - while (length >= POOLSIZE) { - for (i = 0; i < POOLSIZE; i++) - pool.pool[i] ^= *p++; - random_stir(); - length -= POOLSIZE; - } - - for (i = 0; i < length; i++) - pool.pool[i] ^= *p++; - random_stir(); -} - -static void random_add_heavynoise_bitbybit(void *noise, int length) -{ - unsigned char *p = noise; - int i; - - while (length >= POOLSIZE - pool.poolpos) { - for (i = 0; i < POOLSIZE - pool.poolpos; i++) - pool.pool[pool.poolpos + i] ^= *p++; - random_stir(); - length -= POOLSIZE - pool.poolpos; - pool.poolpos = 0; - } - - for (i = 0; i < length; i++) - pool.pool[i] ^= *p++; - pool.poolpos = i; -} - -static void random_timer(void *ctx, long now) -{ - if (random_active > 0 && now - next_noise_collection >= 0) { - noise_regular(); - next_noise_collection = - schedule_timer(NOISE_REGULAR_INTERVAL, random_timer, &pool); - } -} - -void random_ref(void) -{ - if (!random_active) { - memset(&pool, 0, sizeof(pool)); /* just to start with */ - - noise_get_heavy(random_add_heavynoise_bitbybit); - random_stir(); - - next_noise_collection = - schedule_timer(NOISE_REGULAR_INTERVAL, random_timer, &pool); - } - - random_active++; -} - -void random_unref(void) -{ - random_active--; -} - -int random_byte(void) -{ - if (pool.poolpos >= POOLSIZE) - random_stir(); - - return pool.pool[pool.poolpos++]; -} - -void random_get_savedata(void **data, int *len) -{ - void *buf = snewn(POOLSIZE / 2, char); - random_stir(); - memcpy(buf, pool.pool + pool.poolpos, POOLSIZE / 2); - *len = POOLSIZE / 2; - *data = buf; - random_stir(); -} diff --git a/tools/plink/sshrsa.c b/tools/plink/sshrsa.c deleted file mode 100644 index d06e9d6f4..000000000 --- a/tools/plink/sshrsa.c +++ /dev/null @@ -1,1010 +0,0 @@ -/* - * RSA implementation for PuTTY. - */ - -#include -#include -#include -#include - -#include "ssh.h" -#include "misc.h" - -int makekey(unsigned char *data, int len, struct RSAKey *result, - unsigned char **keystr, int order) -{ - unsigned char *p = data; - int i, n; - - if (len < 4) - return -1; - - if (result) { - result->bits = 0; - for (i = 0; i < 4; i++) - result->bits = (result->bits << 8) + *p++; - } else - p += 4; - - len -= 4; - - /* - * order=0 means exponent then modulus (the keys sent by the - * server). order=1 means modulus then exponent (the keys - * stored in a keyfile). - */ - - if (order == 0) { - n = ssh1_read_bignum(p, len, result ? &result->exponent : NULL); - if (n < 0) return -1; - p += n; - len -= n; - } - - n = ssh1_read_bignum(p, len, result ? &result->modulus : NULL); - if (n < 0 || (result && bignum_bitcount(result->modulus) == 0)) return -1; - if (result) - result->bytes = n - 2; - if (keystr) - *keystr = p + 2; - p += n; - len -= n; - - if (order == 1) { - n = ssh1_read_bignum(p, len, result ? &result->exponent : NULL); - if (n < 0) return -1; - p += n; - len -= n; - } - return p - data; -} - -int makeprivate(unsigned char *data, int len, struct RSAKey *result) -{ - return ssh1_read_bignum(data, len, &result->private_exponent); -} - -int rsaencrypt(unsigned char *data, int length, struct RSAKey *key) -{ - Bignum b1, b2; - int i; - unsigned char *p; - - if (key->bytes < length + 4) - return 0; /* RSA key too short! */ - - memmove(data + key->bytes - length, data, length); - data[0] = 0; - data[1] = 2; - - for (i = 2; i < key->bytes - length - 1; i++) { - do { - data[i] = random_byte(); - } while (data[i] == 0); - } - data[key->bytes - length - 1] = 0; - - b1 = bignum_from_bytes(data, key->bytes); - - b2 = modpow(b1, key->exponent, key->modulus); - - p = data; - for (i = key->bytes; i--;) { - *p++ = bignum_byte(b2, i); - } - - freebn(b1); - freebn(b2); - - return 1; -} - -static void sha512_mpint(SHA512_State * s, Bignum b) -{ - unsigned char lenbuf[4]; - int len; - len = (bignum_bitcount(b) + 8) / 8; - PUT_32BIT(lenbuf, len); - SHA512_Bytes(s, lenbuf, 4); - while (len-- > 0) { - lenbuf[0] = bignum_byte(b, len); - SHA512_Bytes(s, lenbuf, 1); - } - memset(lenbuf, 0, sizeof(lenbuf)); -} - -/* - * This function is a wrapper on modpow(). It has the same effect - * as modpow(), but employs RSA blinding to protect against timing - * attacks. - */ -static Bignum rsa_privkey_op(Bignum input, struct RSAKey *key) -{ - Bignum random, random_encrypted, random_inverse; - Bignum input_blinded, ret_blinded; - Bignum ret; - - SHA512_State ss; - unsigned char digest512[64]; - int digestused = lenof(digest512); - int hashseq = 0; - - /* - * Start by inventing a random number chosen uniformly from the - * range 2..modulus-1. (We do this by preparing a random number - * of the right length and retrying if it's greater than the - * modulus, to prevent any potential Bleichenbacher-like - * attacks making use of the uneven distribution within the - * range that would arise from just reducing our number mod n. - * There are timing implications to the potential retries, of - * course, but all they tell you is the modulus, which you - * already knew.) - * - * To preserve determinism and avoid Pageant needing to share - * the random number pool, we actually generate this `random' - * number by hashing stuff with the private key. - */ - while (1) { - int bits, byte, bitsleft, v; - random = copybn(key->modulus); - /* - * Find the topmost set bit. (This function will return its - * index plus one.) Then we'll set all bits from that one - * downwards randomly. - */ - bits = bignum_bitcount(random); - byte = 0; - bitsleft = 0; - while (bits--) { - if (bitsleft <= 0) { - bitsleft = 8; - /* - * Conceptually the following few lines are equivalent to - * byte = random_byte(); - */ - if (digestused >= lenof(digest512)) { - unsigned char seqbuf[4]; - PUT_32BIT(seqbuf, hashseq); - SHA512_Init(&ss); - SHA512_Bytes(&ss, "RSA deterministic blinding", 26); - SHA512_Bytes(&ss, seqbuf, sizeof(seqbuf)); - sha512_mpint(&ss, key->private_exponent); - SHA512_Final(&ss, digest512); - hashseq++; - - /* - * Now hash that digest plus the signature - * input. - */ - SHA512_Init(&ss); - SHA512_Bytes(&ss, digest512, sizeof(digest512)); - sha512_mpint(&ss, input); - SHA512_Final(&ss, digest512); - - digestused = 0; - } - byte = digest512[digestused++]; - } - v = byte & 1; - byte >>= 1; - bitsleft--; - bignum_set_bit(random, bits, v); - } - - /* - * Now check that this number is strictly greater than - * zero, and strictly less than modulus. - */ - if (bignum_cmp(random, Zero) <= 0 || - bignum_cmp(random, key->modulus) >= 0) { - freebn(random); - continue; - } else { - break; - } - } - - /* - * RSA blinding relies on the fact that (xy)^d mod n is equal - * to (x^d mod n) * (y^d mod n) mod n. We invent a random pair - * y and y^d; then we multiply x by y, raise to the power d mod - * n as usual, and divide by y^d to recover x^d. Thus an - * attacker can't correlate the timing of the modpow with the - * input, because they don't know anything about the number - * that was input to the actual modpow. - * - * The clever bit is that we don't have to do a huge modpow to - * get y and y^d; we will use the number we just invented as - * _y^d_, and use the _public_ exponent to compute (y^d)^e = y - * from it, which is much faster to do. - */ - random_encrypted = modpow(random, key->exponent, key->modulus); - random_inverse = modinv(random, key->modulus); - input_blinded = modmul(input, random_encrypted, key->modulus); - ret_blinded = modpow(input_blinded, key->private_exponent, key->modulus); - ret = modmul(ret_blinded, random_inverse, key->modulus); - - freebn(ret_blinded); - freebn(input_blinded); - freebn(random_inverse); - freebn(random_encrypted); - freebn(random); - - return ret; -} - -Bignum rsadecrypt(Bignum input, struct RSAKey *key) -{ - return rsa_privkey_op(input, key); -} - -int rsastr_len(struct RSAKey *key) -{ - Bignum md, ex; - int mdlen, exlen; - - md = key->modulus; - ex = key->exponent; - mdlen = (bignum_bitcount(md) + 15) / 16; - exlen = (bignum_bitcount(ex) + 15) / 16; - return 4 * (mdlen + exlen) + 20; -} - -void rsastr_fmt(char *str, struct RSAKey *key) -{ - Bignum md, ex; - int len = 0, i, nibbles; - static const char hex[] = "0123456789abcdef"; - - md = key->modulus; - ex = key->exponent; - - len += sprintf(str + len, "0x"); - - nibbles = (3 + bignum_bitcount(ex)) / 4; - if (nibbles < 1) - nibbles = 1; - for (i = nibbles; i--;) - str[len++] = hex[(bignum_byte(ex, i / 2) >> (4 * (i % 2))) & 0xF]; - - len += sprintf(str + len, ",0x"); - - nibbles = (3 + bignum_bitcount(md)) / 4; - if (nibbles < 1) - nibbles = 1; - for (i = nibbles; i--;) - str[len++] = hex[(bignum_byte(md, i / 2) >> (4 * (i % 2))) & 0xF]; - - str[len] = '\0'; -} - -/* - * Generate a fingerprint string for the key. Compatible with the - * OpenSSH fingerprint code. - */ -void rsa_fingerprint(char *str, int len, struct RSAKey *key) -{ - struct MD5Context md5c; - unsigned char digest[16]; - char buffer[16 * 3 + 40]; - int numlen, slen, i; - - MD5Init(&md5c); - numlen = ssh1_bignum_length(key->modulus) - 2; - for (i = numlen; i--;) { - unsigned char c = bignum_byte(key->modulus, i); - MD5Update(&md5c, &c, 1); - } - numlen = ssh1_bignum_length(key->exponent) - 2; - for (i = numlen; i--;) { - unsigned char c = bignum_byte(key->exponent, i); - MD5Update(&md5c, &c, 1); - } - MD5Final(digest, &md5c); - - sprintf(buffer, "%d ", bignum_bitcount(key->modulus)); - for (i = 0; i < 16; i++) - sprintf(buffer + strlen(buffer), "%s%02x", i ? ":" : "", - digest[i]); - strncpy(str, buffer, len); - str[len - 1] = '\0'; - slen = strlen(str); - if (key->comment && slen < len - 1) { - str[slen] = ' '; - strncpy(str + slen + 1, key->comment, len - slen - 1); - str[len - 1] = '\0'; - } -} - -/* - * Verify that the public data in an RSA key matches the private - * data. We also check the private data itself: we ensure that p > - * q and that iqmp really is the inverse of q mod p. - */ -int rsa_verify(struct RSAKey *key) -{ - Bignum n, ed, pm1, qm1; - int cmp; - - /* n must equal pq. */ - n = bigmul(key->p, key->q); - cmp = bignum_cmp(n, key->modulus); - freebn(n); - if (cmp != 0) - return 0; - - /* e * d must be congruent to 1, modulo (p-1) and modulo (q-1). */ - pm1 = copybn(key->p); - decbn(pm1); - ed = modmul(key->exponent, key->private_exponent, pm1); - cmp = bignum_cmp(ed, One); - sfree(ed); - if (cmp != 0) - return 0; - - qm1 = copybn(key->q); - decbn(qm1); - ed = modmul(key->exponent, key->private_exponent, qm1); - cmp = bignum_cmp(ed, One); - sfree(ed); - if (cmp != 0) - return 0; - - /* - * Ensure p > q. - * - * I have seen key blobs in the wild which were generated with - * p < q, so instead of rejecting the key in this case we - * should instead flip them round into the canonical order of - * p > q. This also involves regenerating iqmp. - */ - if (bignum_cmp(key->p, key->q) <= 0) { - Bignum tmp = key->p; - key->p = key->q; - key->q = tmp; - - freebn(key->iqmp); - key->iqmp = modinv(key->q, key->p); - } - - /* - * Ensure iqmp * q is congruent to 1, modulo p. - */ - n = modmul(key->iqmp, key->q, key->p); - cmp = bignum_cmp(n, One); - sfree(n); - if (cmp != 0) - return 0; - - return 1; -} - -/* Public key blob as used by Pageant: exponent before modulus. */ -unsigned char *rsa_public_blob(struct RSAKey *key, int *len) -{ - int length, pos; - unsigned char *ret; - - length = (ssh1_bignum_length(key->modulus) + - ssh1_bignum_length(key->exponent) + 4); - ret = snewn(length, unsigned char); - - PUT_32BIT(ret, bignum_bitcount(key->modulus)); - pos = 4; - pos += ssh1_write_bignum(ret + pos, key->exponent); - pos += ssh1_write_bignum(ret + pos, key->modulus); - - *len = length; - return ret; -} - -/* Given a public blob, determine its length. */ -int rsa_public_blob_len(void *data, int maxlen) -{ - unsigned char *p = (unsigned char *)data; - int n; - - if (maxlen < 4) - return -1; - p += 4; /* length word */ - maxlen -= 4; - - n = ssh1_read_bignum(p, maxlen, NULL); /* exponent */ - if (n < 0) - return -1; - p += n; - - n = ssh1_read_bignum(p, maxlen, NULL); /* modulus */ - if (n < 0) - return -1; - p += n; - - return p - (unsigned char *)data; -} - -void freersakey(struct RSAKey *key) -{ - if (key->modulus) - freebn(key->modulus); - if (key->exponent) - freebn(key->exponent); - if (key->private_exponent) - freebn(key->private_exponent); - if (key->p) - freebn(key->p); - if (key->q) - freebn(key->q); - if (key->iqmp) - freebn(key->iqmp); - if (key->comment) - sfree(key->comment); -} - -/* ---------------------------------------------------------------------- - * Implementation of the ssh-rsa signing key type. - */ - -static void getstring(char **data, int *datalen, char **p, int *length) -{ - *p = NULL; - if (*datalen < 4) - return; - *length = GET_32BIT(*data); - *datalen -= 4; - *data += 4; - if (*datalen < *length) - return; - *p = *data; - *data += *length; - *datalen -= *length; -} -static Bignum getmp(char **data, int *datalen) -{ - char *p; - int length; - Bignum b; - - getstring(data, datalen, &p, &length); - if (!p) - return NULL; - b = bignum_from_bytes((unsigned char *)p, length); - return b; -} - -static void *rsa2_newkey(char *data, int len) -{ - char *p; - int slen; - struct RSAKey *rsa; - - rsa = snew(struct RSAKey); - if (!rsa) - return NULL; - getstring(&data, &len, &p, &slen); - - if (!p || slen != 7 || memcmp(p, "ssh-rsa", 7)) { - sfree(rsa); - return NULL; - } - rsa->exponent = getmp(&data, &len); - rsa->modulus = getmp(&data, &len); - rsa->private_exponent = NULL; - rsa->p = rsa->q = rsa->iqmp = NULL; - rsa->comment = NULL; - - return rsa; -} - -static void rsa2_freekey(void *key) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - freersakey(rsa); - sfree(rsa); -} - -static char *rsa2_fmtkey(void *key) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - char *p; - int len; - - len = rsastr_len(rsa); - p = snewn(len, char); - rsastr_fmt(p, rsa); - return p; -} - -static unsigned char *rsa2_public_blob(void *key, int *len) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - int elen, mlen, bloblen; - int i; - unsigned char *blob, *p; - - elen = (bignum_bitcount(rsa->exponent) + 8) / 8; - mlen = (bignum_bitcount(rsa->modulus) + 8) / 8; - - /* - * string "ssh-rsa", mpint exp, mpint mod. Total 19+elen+mlen. - * (three length fields, 12+7=19). - */ - bloblen = 19 + elen + mlen; - blob = snewn(bloblen, unsigned char); - p = blob; - PUT_32BIT(p, 7); - p += 4; - memcpy(p, "ssh-rsa", 7); - p += 7; - PUT_32BIT(p, elen); - p += 4; - for (i = elen; i--;) - *p++ = bignum_byte(rsa->exponent, i); - PUT_32BIT(p, mlen); - p += 4; - for (i = mlen; i--;) - *p++ = bignum_byte(rsa->modulus, i); - assert(p == blob + bloblen); - *len = bloblen; - return blob; -} - -static unsigned char *rsa2_private_blob(void *key, int *len) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - int dlen, plen, qlen, ulen, bloblen; - int i; - unsigned char *blob, *p; - - dlen = (bignum_bitcount(rsa->private_exponent) + 8) / 8; - plen = (bignum_bitcount(rsa->p) + 8) / 8; - qlen = (bignum_bitcount(rsa->q) + 8) / 8; - ulen = (bignum_bitcount(rsa->iqmp) + 8) / 8; - - /* - * mpint private_exp, mpint p, mpint q, mpint iqmp. Total 16 + - * sum of lengths. - */ - bloblen = 16 + dlen + plen + qlen + ulen; - blob = snewn(bloblen, unsigned char); - p = blob; - PUT_32BIT(p, dlen); - p += 4; - for (i = dlen; i--;) - *p++ = bignum_byte(rsa->private_exponent, i); - PUT_32BIT(p, plen); - p += 4; - for (i = plen; i--;) - *p++ = bignum_byte(rsa->p, i); - PUT_32BIT(p, qlen); - p += 4; - for (i = qlen; i--;) - *p++ = bignum_byte(rsa->q, i); - PUT_32BIT(p, ulen); - p += 4; - for (i = ulen; i--;) - *p++ = bignum_byte(rsa->iqmp, i); - assert(p == blob + bloblen); - *len = bloblen; - return blob; -} - -static void *rsa2_createkey(unsigned char *pub_blob, int pub_len, - unsigned char *priv_blob, int priv_len) -{ - struct RSAKey *rsa; - char *pb = (char *) priv_blob; - - rsa = rsa2_newkey((char *) pub_blob, pub_len); - rsa->private_exponent = getmp(&pb, &priv_len); - rsa->p = getmp(&pb, &priv_len); - rsa->q = getmp(&pb, &priv_len); - rsa->iqmp = getmp(&pb, &priv_len); - - if (!rsa_verify(rsa)) { - rsa2_freekey(rsa); - return NULL; - } - - return rsa; -} - -static void *rsa2_openssh_createkey(unsigned char **blob, int *len) -{ - char **b = (char **) blob; - struct RSAKey *rsa; - - rsa = snew(struct RSAKey); - if (!rsa) - return NULL; - rsa->comment = NULL; - - rsa->modulus = getmp(b, len); - rsa->exponent = getmp(b, len); - rsa->private_exponent = getmp(b, len); - rsa->iqmp = getmp(b, len); - rsa->p = getmp(b, len); - rsa->q = getmp(b, len); - - if (!rsa->modulus || !rsa->exponent || !rsa->private_exponent || - !rsa->iqmp || !rsa->p || !rsa->q) { - sfree(rsa->modulus); - sfree(rsa->exponent); - sfree(rsa->private_exponent); - sfree(rsa->iqmp); - sfree(rsa->p); - sfree(rsa->q); - sfree(rsa); - return NULL; - } - - return rsa; -} - -static int rsa2_openssh_fmtkey(void *key, unsigned char *blob, int len) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - int bloblen, i; - - bloblen = - ssh2_bignum_length(rsa->modulus) + - ssh2_bignum_length(rsa->exponent) + - ssh2_bignum_length(rsa->private_exponent) + - ssh2_bignum_length(rsa->iqmp) + - ssh2_bignum_length(rsa->p) + ssh2_bignum_length(rsa->q); - - if (bloblen > len) - return bloblen; - - bloblen = 0; -#define ENC(x) \ - PUT_32BIT(blob+bloblen, ssh2_bignum_length((x))-4); bloblen += 4; \ - for (i = ssh2_bignum_length((x))-4; i-- ;) blob[bloblen++]=bignum_byte((x),i); - ENC(rsa->modulus); - ENC(rsa->exponent); - ENC(rsa->private_exponent); - ENC(rsa->iqmp); - ENC(rsa->p); - ENC(rsa->q); - - return bloblen; -} - -static int rsa2_pubkey_bits(void *blob, int len) -{ - struct RSAKey *rsa; - int ret; - - rsa = rsa2_newkey((char *) blob, len); - ret = bignum_bitcount(rsa->modulus); - rsa2_freekey(rsa); - - return ret; -} - -static char *rsa2_fingerprint(void *key) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - struct MD5Context md5c; - unsigned char digest[16], lenbuf[4]; - char buffer[16 * 3 + 40]; - char *ret; - int numlen, i; - - MD5Init(&md5c); - MD5Update(&md5c, (unsigned char *)"\0\0\0\7ssh-rsa", 11); - -#define ADD_BIGNUM(bignum) \ - numlen = (bignum_bitcount(bignum)+8)/8; \ - PUT_32BIT(lenbuf, numlen); MD5Update(&md5c, lenbuf, 4); \ - for (i = numlen; i-- ;) { \ - unsigned char c = bignum_byte(bignum, i); \ - MD5Update(&md5c, &c, 1); \ - } - ADD_BIGNUM(rsa->exponent); - ADD_BIGNUM(rsa->modulus); -#undef ADD_BIGNUM - - MD5Final(digest, &md5c); - - sprintf(buffer, "ssh-rsa %d ", bignum_bitcount(rsa->modulus)); - for (i = 0; i < 16; i++) - sprintf(buffer + strlen(buffer), "%s%02x", i ? ":" : "", - digest[i]); - ret = snewn(strlen(buffer) + 1, char); - if (ret) - strcpy(ret, buffer); - return ret; -} - -/* - * This is the magic ASN.1/DER prefix that goes in the decoded - * signature, between the string of FFs and the actual SHA hash - * value. The meaning of it is: - * - * 00 -- this marks the end of the FFs; not part of the ASN.1 bit itself - * - * 30 21 -- a constructed SEQUENCE of length 0x21 - * 30 09 -- a constructed sub-SEQUENCE of length 9 - * 06 05 -- an object identifier, length 5 - * 2B 0E 03 02 1A -- object id { 1 3 14 3 2 26 } - * (the 1,3 comes from 0x2B = 43 = 40*1+3) - * 05 00 -- NULL - * 04 14 -- a primitive OCTET STRING of length 0x14 - * [0x14 bytes of hash data follows] - * - * The object id in the middle there is listed as `id-sha1' in - * ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1d2.asn (the - * ASN module for PKCS #1) and its expanded form is as follows: - * - * id-sha1 OBJECT IDENTIFIER ::= { - * iso(1) identified-organization(3) oiw(14) secsig(3) - * algorithms(2) 26 } - */ -static const unsigned char asn1_weird_stuff[] = { - 0x00, 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2B, - 0x0E, 0x03, 0x02, 0x1A, 0x05, 0x00, 0x04, 0x14, -}; - -#define ASN1_LEN ( (int) sizeof(asn1_weird_stuff) ) - -static int rsa2_verifysig(void *key, char *sig, int siglen, - char *data, int datalen) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - Bignum in, out; - char *p; - int slen; - int bytes, i, j, ret; - unsigned char hash[20]; - - getstring(&sig, &siglen, &p, &slen); - if (!p || slen != 7 || memcmp(p, "ssh-rsa", 7)) { - return 0; - } - in = getmp(&sig, &siglen); - out = modpow(in, rsa->exponent, rsa->modulus); - freebn(in); - - ret = 1; - - bytes = (bignum_bitcount(rsa->modulus)+7) / 8; - /* Top (partial) byte should be zero. */ - if (bignum_byte(out, bytes - 1) != 0) - ret = 0; - /* First whole byte should be 1. */ - if (bignum_byte(out, bytes - 2) != 1) - ret = 0; - /* Most of the rest should be FF. */ - for (i = bytes - 3; i >= 20 + ASN1_LEN; i--) { - if (bignum_byte(out, i) != 0xFF) - ret = 0; - } - /* Then we expect to see the asn1_weird_stuff. */ - for (i = 20 + ASN1_LEN - 1, j = 0; i >= 20; i--, j++) { - if (bignum_byte(out, i) != asn1_weird_stuff[j]) - ret = 0; - } - /* Finally, we expect to see the SHA-1 hash of the signed data. */ - SHA_Simple(data, datalen, hash); - for (i = 19, j = 0; i >= 0; i--, j++) { - if (bignum_byte(out, i) != hash[j]) - ret = 0; - } - freebn(out); - - return ret; -} - -static unsigned char *rsa2_sign(void *key, char *data, int datalen, - int *siglen) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - unsigned char *bytes; - int nbytes; - unsigned char hash[20]; - Bignum in, out; - int i, j; - - SHA_Simple(data, datalen, hash); - - nbytes = (bignum_bitcount(rsa->modulus) - 1) / 8; - assert(1 <= nbytes - 20 - ASN1_LEN); - bytes = snewn(nbytes, unsigned char); - - bytes[0] = 1; - for (i = 1; i < nbytes - 20 - ASN1_LEN; i++) - bytes[i] = 0xFF; - for (i = nbytes - 20 - ASN1_LEN, j = 0; i < nbytes - 20; i++, j++) - bytes[i] = asn1_weird_stuff[j]; - for (i = nbytes - 20, j = 0; i < nbytes; i++, j++) - bytes[i] = hash[j]; - - in = bignum_from_bytes(bytes, nbytes); - sfree(bytes); - - out = rsa_privkey_op(in, rsa); - freebn(in); - - nbytes = (bignum_bitcount(out) + 7) / 8; - bytes = snewn(4 + 7 + 4 + nbytes, unsigned char); - PUT_32BIT(bytes, 7); - memcpy(bytes + 4, "ssh-rsa", 7); - PUT_32BIT(bytes + 4 + 7, nbytes); - for (i = 0; i < nbytes; i++) - bytes[4 + 7 + 4 + i] = bignum_byte(out, nbytes - 1 - i); - freebn(out); - - *siglen = 4 + 7 + 4 + nbytes; - return bytes; -} - -const struct ssh_signkey ssh_rsa = { - rsa2_newkey, - rsa2_freekey, - rsa2_fmtkey, - rsa2_public_blob, - rsa2_private_blob, - rsa2_createkey, - rsa2_openssh_createkey, - rsa2_openssh_fmtkey, - rsa2_pubkey_bits, - rsa2_fingerprint, - rsa2_verifysig, - rsa2_sign, - "ssh-rsa", - "rsa2" -}; - -void *ssh_rsakex_newkey(char *data, int len) -{ - return rsa2_newkey(data, len); -} - -void ssh_rsakex_freekey(void *key) -{ - rsa2_freekey(key); -} - -int ssh_rsakex_klen(void *key) -{ - struct RSAKey *rsa = (struct RSAKey *) key; - - return bignum_bitcount(rsa->modulus); -} - -static void oaep_mask(const struct ssh_hash *h, void *seed, int seedlen, - void *vdata, int datalen) -{ - unsigned char *data = (unsigned char *)vdata; - unsigned count = 0; - - while (datalen > 0) { - int i, max = (datalen > h->hlen ? h->hlen : datalen); - void *s; - unsigned char counter[4], hash[SSH2_KEX_MAX_HASH_LEN]; - - assert(h->hlen <= SSH2_KEX_MAX_HASH_LEN); - PUT_32BIT(counter, count); - s = h->init(); - h->bytes(s, seed, seedlen); - h->bytes(s, counter, 4); - h->final(s, hash); - count++; - - for (i = 0; i < max; i++) - data[i] ^= hash[i]; - - data += max; - datalen -= max; - } -} - -void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen, - unsigned char *out, int outlen, - void *key) -{ - Bignum b1, b2; - struct RSAKey *rsa = (struct RSAKey *) key; - int k, i; - char *p; - const int HLEN = h->hlen; - - /* - * Here we encrypt using RSAES-OAEP. Essentially this means: - * - * - we have a SHA-based `mask generation function' which - * creates a pseudo-random stream of mask data - * deterministically from an input chunk of data. - * - * - we have a random chunk of data called a seed. - * - * - we use the seed to generate a mask which we XOR with our - * plaintext. - * - * - then we use _the masked plaintext_ to generate a mask - * which we XOR with the seed. - * - * - then we concatenate the masked seed and the masked - * plaintext, and RSA-encrypt that lot. - * - * The result is that the data input to the encryption function - * is random-looking and (hopefully) contains no exploitable - * structure such as PKCS1-v1_5 does. - * - * For a precise specification, see RFC 3447, section 7.1.1. - * Some of the variable names below are derived from that, so - * it'd probably help to read it anyway. - */ - - /* k denotes the length in octets of the RSA modulus. */ - k = (7 + bignum_bitcount(rsa->modulus)) / 8; - - /* The length of the input data must be at most k - 2hLen - 2. */ - assert(inlen > 0 && inlen <= k - 2*HLEN - 2); - - /* The length of the output data wants to be precisely k. */ - assert(outlen == k); - - /* - * Now perform EME-OAEP encoding. First set up all the unmasked - * output data. - */ - /* Leading byte zero. */ - out[0] = 0; - /* At position 1, the seed: HLEN bytes of random data. */ - for (i = 0; i < HLEN; i++) - out[i + 1] = random_byte(); - /* At position 1+HLEN, the data block DB, consisting of: */ - /* The hash of the label (we only support an empty label here) */ - h->final(h->init(), out + HLEN + 1); - /* A bunch of zero octets */ - memset(out + 2*HLEN + 1, 0, outlen - (2*HLEN + 1)); - /* A single 1 octet, followed by the input message data. */ - out[outlen - inlen - 1] = 1; - memcpy(out + outlen - inlen, in, inlen); - - /* - * Now use the seed data to mask the block DB. - */ - oaep_mask(h, out+1, HLEN, out+HLEN+1, outlen-HLEN-1); - - /* - * And now use the masked DB to mask the seed itself. - */ - oaep_mask(h, out+HLEN+1, outlen-HLEN-1, out+1, HLEN); - - /* - * Now `out' contains precisely the data we want to - * RSA-encrypt. - */ - b1 = bignum_from_bytes(out, outlen); - b2 = modpow(b1, rsa->exponent, rsa->modulus); - p = (char *)out; - for (i = outlen; i--;) { - *p++ = bignum_byte(b2, i); - } - freebn(b1); - freebn(b2); - - /* - * And we're done. - */ -} - -static const struct ssh_kex ssh_rsa_kex_sha1 = { - "rsa1024-sha1", NULL, KEXTYPE_RSA, NULL, NULL, 0, 0, &ssh_sha1 -}; - -static const struct ssh_kex ssh_rsa_kex_sha256 = { - "rsa2048-sha256", NULL, KEXTYPE_RSA, NULL, NULL, 0, 0, &ssh_sha256 -}; - -static const struct ssh_kex *const rsa_kex_list[] = { - &ssh_rsa_kex_sha256, - &ssh_rsa_kex_sha1 -}; - -const struct ssh_kexes ssh_rsa_kex = { - sizeof(rsa_kex_list) / sizeof(*rsa_kex_list), - rsa_kex_list -}; diff --git a/tools/plink/sshsh256.c b/tools/plink/sshsh256.c deleted file mode 100644 index 538982a89..000000000 --- a/tools/plink/sshsh256.c +++ /dev/null @@ -1,269 +0,0 @@ -/* - * SHA-256 algorithm as described at - * - * http://csrc.nist.gov/cryptval/shs.html - */ - -#include "ssh.h" - -/* ---------------------------------------------------------------------- - * Core SHA256 algorithm: processes 16-word blocks into a message digest. - */ - -#define ror(x,y) ( ((x) << (32-y)) | (((uint32)(x)) >> (y)) ) -#define shr(x,y) ( (((uint32)(x)) >> (y)) ) -#define Ch(x,y,z) ( ((x) & (y)) ^ (~(x) & (z)) ) -#define Maj(x,y,z) ( ((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)) ) -#define bigsigma0(x) ( ror((x),2) ^ ror((x),13) ^ ror((x),22) ) -#define bigsigma1(x) ( ror((x),6) ^ ror((x),11) ^ ror((x),25) ) -#define smallsigma0(x) ( ror((x),7) ^ ror((x),18) ^ shr((x),3) ) -#define smallsigma1(x) ( ror((x),17) ^ ror((x),19) ^ shr((x),10) ) - -void SHA256_Core_Init(SHA256_State *s) { - s->h[0] = 0x6a09e667; - s->h[1] = 0xbb67ae85; - s->h[2] = 0x3c6ef372; - s->h[3] = 0xa54ff53a; - s->h[4] = 0x510e527f; - s->h[5] = 0x9b05688c; - s->h[6] = 0x1f83d9ab; - s->h[7] = 0x5be0cd19; -} - -void SHA256_Block(SHA256_State *s, uint32 *block) { - uint32 w[80]; - uint32 a,b,c,d,e,f,g,h; - static const int k[] = { - 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, - 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, - 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, - 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, - 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, - 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, - 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, - 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, - 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, - 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, - 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, - 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, - 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, - 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, - 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, - 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2, - }; - - int t; - - for (t = 0; t < 16; t++) - w[t] = block[t]; - - for (t = 16; t < 64; t++) - w[t] = smallsigma1(w[t-2]) + w[t-7] + smallsigma0(w[t-15]) + w[t-16]; - - a = s->h[0]; b = s->h[1]; c = s->h[2]; d = s->h[3]; - e = s->h[4]; f = s->h[5]; g = s->h[6]; h = s->h[7]; - - for (t = 0; t < 64; t+=8) { - uint32 t1, t2; - -#define ROUND(j,a,b,c,d,e,f,g,h) \ - t1 = h + bigsigma1(e) + Ch(e,f,g) + k[j] + w[j]; \ - t2 = bigsigma0(a) + Maj(a,b,c); \ - d = d + t1; h = t1 + t2; - - ROUND(t+0, a,b,c,d,e,f,g,h); - ROUND(t+1, h,a,b,c,d,e,f,g); - ROUND(t+2, g,h,a,b,c,d,e,f); - ROUND(t+3, f,g,h,a,b,c,d,e); - ROUND(t+4, e,f,g,h,a,b,c,d); - ROUND(t+5, d,e,f,g,h,a,b,c); - ROUND(t+6, c,d,e,f,g,h,a,b); - ROUND(t+7, b,c,d,e,f,g,h,a); - } - - s->h[0] += a; s->h[1] += b; s->h[2] += c; s->h[3] += d; - s->h[4] += e; s->h[5] += f; s->h[6] += g; s->h[7] += h; -} - -/* ---------------------------------------------------------------------- - * Outer SHA256 algorithm: take an arbitrary length byte string, - * convert it into 16-word blocks with the prescribed padding at - * the end, and pass those blocks to the core SHA256 algorithm. - */ - -#define BLKSIZE 64 - -void SHA256_Init(SHA256_State *s) { - SHA256_Core_Init(s); - s->blkused = 0; - s->lenhi = s->lenlo = 0; -} - -void SHA256_Bytes(SHA256_State *s, const void *p, int len) { - unsigned char *q = (unsigned char *)p; - uint32 wordblock[16]; - uint32 lenw = len; - int i; - - /* - * Update the length field. - */ - s->lenlo += lenw; - s->lenhi += (s->lenlo < lenw); - - if (s->blkused && s->blkused+len < BLKSIZE) { - /* - * Trivial case: just add to the block. - */ - memcpy(s->block + s->blkused, q, len); - s->blkused += len; - } else { - /* - * We must complete and process at least one block. - */ - while (s->blkused + len >= BLKSIZE) { - memcpy(s->block + s->blkused, q, BLKSIZE - s->blkused); - q += BLKSIZE - s->blkused; - len -= BLKSIZE - s->blkused; - /* Now process the block. Gather bytes big-endian into words */ - for (i = 0; i < 16; i++) { - wordblock[i] = - ( ((uint32)s->block[i*4+0]) << 24 ) | - ( ((uint32)s->block[i*4+1]) << 16 ) | - ( ((uint32)s->block[i*4+2]) << 8 ) | - ( ((uint32)s->block[i*4+3]) << 0 ); - } - SHA256_Block(s, wordblock); - s->blkused = 0; - } - memcpy(s->block, q, len); - s->blkused = len; - } -} - -void SHA256_Final(SHA256_State *s, unsigned char *digest) { - int i; - int pad; - unsigned char c[64]; - uint32 lenhi, lenlo; - - if (s->blkused >= 56) - pad = 56 + 64 - s->blkused; - else - pad = 56 - s->blkused; - - lenhi = (s->lenhi << 3) | (s->lenlo >> (32-3)); - lenlo = (s->lenlo << 3); - - memset(c, 0, pad); - c[0] = 0x80; - SHA256_Bytes(s, &c, pad); - - c[0] = (lenhi >> 24) & 0xFF; - c[1] = (lenhi >> 16) & 0xFF; - c[2] = (lenhi >> 8) & 0xFF; - c[3] = (lenhi >> 0) & 0xFF; - c[4] = (lenlo >> 24) & 0xFF; - c[5] = (lenlo >> 16) & 0xFF; - c[6] = (lenlo >> 8) & 0xFF; - c[7] = (lenlo >> 0) & 0xFF; - - SHA256_Bytes(s, &c, 8); - - for (i = 0; i < 8; i++) { - digest[i*4+0] = (s->h[i] >> 24) & 0xFF; - digest[i*4+1] = (s->h[i] >> 16) & 0xFF; - digest[i*4+2] = (s->h[i] >> 8) & 0xFF; - digest[i*4+3] = (s->h[i] >> 0) & 0xFF; - } -} - -void SHA256_Simple(const void *p, int len, unsigned char *output) { - SHA256_State s; - - SHA256_Init(&s); - SHA256_Bytes(&s, p, len); - SHA256_Final(&s, output); -} - -/* - * Thin abstraction for things where hashes are pluggable. - */ - -static void *sha256_init(void) -{ - SHA256_State *s; - - s = snew(SHA256_State); - SHA256_Init(s); - return s; -} - -static void sha256_bytes(void *handle, void *p, int len) -{ - SHA256_State *s = handle; - - SHA256_Bytes(s, p, len); -} - -static void sha256_final(void *handle, unsigned char *output) -{ - SHA256_State *s = handle; - - SHA256_Final(s, output); - sfree(s); -} - -const struct ssh_hash ssh_sha256 = { - sha256_init, sha256_bytes, sha256_final, 32, "SHA-256" -}; - -#ifdef TEST - -#include -#include -#include - -int main(void) { - unsigned char digest[32]; - int i, j, errors; - - struct { - const char *teststring; - unsigned char digest[32]; - } tests[] = { - { "abc", { - 0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea, - 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23, - 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c, - 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad, - } }, - { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", { - 0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8, - 0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39, - 0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67, - 0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1, - } }, - }; - - errors = 0; - - for (i = 0; i < sizeof(tests) / sizeof(*tests); i++) { - SHA256_Simple(tests[i].teststring, - strlen(tests[i].teststring), digest); - for (j = 0; j < 32; j++) { - if (digest[j] != tests[i].digest[j]) { - fprintf(stderr, - "\"%s\" digest byte %d should be 0x%02x, is 0x%02x\n", - tests[i].teststring, j, tests[i].digest[j], digest[j]); - errors++; - } - } - } - - printf("%d errors\n", errors); - - return 0; -} - -#endif diff --git a/tools/plink/sshsh512.c b/tools/plink/sshsh512.c deleted file mode 100644 index c025ffd17..000000000 --- a/tools/plink/sshsh512.c +++ /dev/null @@ -1,358 +0,0 @@ -/* - * SHA-512 algorithm as described at - * - * http://csrc.nist.gov/cryptval/shs.html - */ - -#include "ssh.h" - -#define BLKSIZE 128 - -/* - * Arithmetic implementations. Note that AND, XOR and NOT can - * overlap destination with one source, but the others can't. - */ -#define add(r,x,y) ( r.lo = y.lo + x.lo, \ - r.hi = y.hi + x.hi + (r.lo < y.lo) ) -#define rorB(r,x,y) ( r.lo = (x.hi >> ((y)-32)) | (x.lo << (64-(y))), \ - r.hi = (x.lo >> ((y)-32)) | (x.hi << (64-(y))) ) -#define rorL(r,x,y) ( r.lo = (x.lo >> (y)) | (x.hi << (32-(y))), \ - r.hi = (x.hi >> (y)) | (x.lo << (32-(y))) ) -#define shrB(r,x,y) ( r.lo = x.hi >> ((y)-32), r.hi = 0 ) -#define shrL(r,x,y) ( r.lo = (x.lo >> (y)) | (x.hi << (32-(y))), \ - r.hi = x.hi >> (y) ) -#define and(r,x,y) ( r.lo = x.lo & y.lo, r.hi = x.hi & y.hi ) -#define xor(r,x,y) ( r.lo = x.lo ^ y.lo, r.hi = x.hi ^ y.hi ) -#define not(r,x) ( r.lo = ~x.lo, r.hi = ~x.hi ) -#define INIT(h,l) { h, l } -#define BUILD(r,h,l) ( r.hi = h, r.lo = l ) -#define EXTRACT(h,l,r) ( h = r.hi, l = r.lo ) - -/* ---------------------------------------------------------------------- - * Core SHA512 algorithm: processes 16-doubleword blocks into a - * message digest. - */ - -#define Ch(r,t,x,y,z) ( not(t,x), and(r,t,z), and(t,x,y), xor(r,r,t) ) -#define Maj(r,t,x,y,z) ( and(r,x,y), and(t,x,z), xor(r,r,t), \ - and(t,y,z), xor(r,r,t) ) -#define bigsigma0(r,t,x) ( rorL(r,x,28), rorB(t,x,34), xor(r,r,t), \ - rorB(t,x,39), xor(r,r,t) ) -#define bigsigma1(r,t,x) ( rorL(r,x,14), rorL(t,x,18), xor(r,r,t), \ - rorB(t,x,41), xor(r,r,t) ) -#define smallsigma0(r,t,x) ( rorL(r,x,1), rorL(t,x,8), xor(r,r,t), \ - shrL(t,x,7), xor(r,r,t) ) -#define smallsigma1(r,t,x) ( rorL(r,x,19), rorB(t,x,61), xor(r,r,t), \ - shrL(t,x,6), xor(r,r,t) ) - -static void SHA512_Core_Init(SHA512_State *s) { - static const uint64 iv[] = { - INIT(0x6a09e667, 0xf3bcc908), - INIT(0xbb67ae85, 0x84caa73b), - INIT(0x3c6ef372, 0xfe94f82b), - INIT(0xa54ff53a, 0x5f1d36f1), - INIT(0x510e527f, 0xade682d1), - INIT(0x9b05688c, 0x2b3e6c1f), - INIT(0x1f83d9ab, 0xfb41bd6b), - INIT(0x5be0cd19, 0x137e2179), - }; - int i; - for (i = 0; i < 8; i++) - s->h[i] = iv[i]; -} - -static void SHA512_Block(SHA512_State *s, uint64 *block) { - uint64 w[80]; - uint64 a,b,c,d,e,f,g,h; - static const uint64 k[] = { - INIT(0x428a2f98, 0xd728ae22), INIT(0x71374491, 0x23ef65cd), - INIT(0xb5c0fbcf, 0xec4d3b2f), INIT(0xe9b5dba5, 0x8189dbbc), - INIT(0x3956c25b, 0xf348b538), INIT(0x59f111f1, 0xb605d019), - INIT(0x923f82a4, 0xaf194f9b), INIT(0xab1c5ed5, 0xda6d8118), - INIT(0xd807aa98, 0xa3030242), INIT(0x12835b01, 0x45706fbe), - INIT(0x243185be, 0x4ee4b28c), INIT(0x550c7dc3, 0xd5ffb4e2), - INIT(0x72be5d74, 0xf27b896f), INIT(0x80deb1fe, 0x3b1696b1), - INIT(0x9bdc06a7, 0x25c71235), INIT(0xc19bf174, 0xcf692694), - INIT(0xe49b69c1, 0x9ef14ad2), INIT(0xefbe4786, 0x384f25e3), - INIT(0x0fc19dc6, 0x8b8cd5b5), INIT(0x240ca1cc, 0x77ac9c65), - INIT(0x2de92c6f, 0x592b0275), INIT(0x4a7484aa, 0x6ea6e483), - INIT(0x5cb0a9dc, 0xbd41fbd4), INIT(0x76f988da, 0x831153b5), - INIT(0x983e5152, 0xee66dfab), INIT(0xa831c66d, 0x2db43210), - INIT(0xb00327c8, 0x98fb213f), INIT(0xbf597fc7, 0xbeef0ee4), - INIT(0xc6e00bf3, 0x3da88fc2), INIT(0xd5a79147, 0x930aa725), - INIT(0x06ca6351, 0xe003826f), INIT(0x14292967, 0x0a0e6e70), - INIT(0x27b70a85, 0x46d22ffc), INIT(0x2e1b2138, 0x5c26c926), - INIT(0x4d2c6dfc, 0x5ac42aed), INIT(0x53380d13, 0x9d95b3df), - INIT(0x650a7354, 0x8baf63de), INIT(0x766a0abb, 0x3c77b2a8), - INIT(0x81c2c92e, 0x47edaee6), INIT(0x92722c85, 0x1482353b), - INIT(0xa2bfe8a1, 0x4cf10364), INIT(0xa81a664b, 0xbc423001), - INIT(0xc24b8b70, 0xd0f89791), INIT(0xc76c51a3, 0x0654be30), - INIT(0xd192e819, 0xd6ef5218), INIT(0xd6990624, 0x5565a910), - INIT(0xf40e3585, 0x5771202a), INIT(0x106aa070, 0x32bbd1b8), - INIT(0x19a4c116, 0xb8d2d0c8), INIT(0x1e376c08, 0x5141ab53), - INIT(0x2748774c, 0xdf8eeb99), INIT(0x34b0bcb5, 0xe19b48a8), - INIT(0x391c0cb3, 0xc5c95a63), INIT(0x4ed8aa4a, 0xe3418acb), - INIT(0x5b9cca4f, 0x7763e373), INIT(0x682e6ff3, 0xd6b2b8a3), - INIT(0x748f82ee, 0x5defb2fc), INIT(0x78a5636f, 0x43172f60), - INIT(0x84c87814, 0xa1f0ab72), INIT(0x8cc70208, 0x1a6439ec), - INIT(0x90befffa, 0x23631e28), INIT(0xa4506ceb, 0xde82bde9), - INIT(0xbef9a3f7, 0xb2c67915), INIT(0xc67178f2, 0xe372532b), - INIT(0xca273ece, 0xea26619c), INIT(0xd186b8c7, 0x21c0c207), - INIT(0xeada7dd6, 0xcde0eb1e), INIT(0xf57d4f7f, 0xee6ed178), - INIT(0x06f067aa, 0x72176fba), INIT(0x0a637dc5, 0xa2c898a6), - INIT(0x113f9804, 0xbef90dae), INIT(0x1b710b35, 0x131c471b), - INIT(0x28db77f5, 0x23047d84), INIT(0x32caab7b, 0x40c72493), - INIT(0x3c9ebe0a, 0x15c9bebc), INIT(0x431d67c4, 0x9c100d4c), - INIT(0x4cc5d4be, 0xcb3e42b6), INIT(0x597f299c, 0xfc657e2a), - INIT(0x5fcb6fab, 0x3ad6faec), INIT(0x6c44198c, 0x4a475817), - }; - - int t; - - for (t = 0; t < 16; t++) - w[t] = block[t]; - - for (t = 16; t < 80; t++) { - uint64 p, q, r, tmp; - smallsigma1(p, tmp, w[t-2]); - smallsigma0(q, tmp, w[t-15]); - add(r, p, q); - add(p, r, w[t-7]); - add(w[t], p, w[t-16]); - } - - a = s->h[0]; b = s->h[1]; c = s->h[2]; d = s->h[3]; - e = s->h[4]; f = s->h[5]; g = s->h[6]; h = s->h[7]; - - for (t = 0; t < 80; t+=8) { - uint64 tmp, p, q, r; - -#define ROUND(j,a,b,c,d,e,f,g,h) \ - bigsigma1(p, tmp, e); \ - Ch(q, tmp, e, f, g); \ - add(r, p, q); \ - add(p, r, k[j]) ; \ - add(q, p, w[j]); \ - add(r, q, h); \ - bigsigma0(p, tmp, a); \ - Maj(tmp, q, a, b, c); \ - add(q, tmp, p); \ - add(p, r, d); \ - d = p; \ - add(h, q, r); - - ROUND(t+0, a,b,c,d,e,f,g,h); - ROUND(t+1, h,a,b,c,d,e,f,g); - ROUND(t+2, g,h,a,b,c,d,e,f); - ROUND(t+3, f,g,h,a,b,c,d,e); - ROUND(t+4, e,f,g,h,a,b,c,d); - ROUND(t+5, d,e,f,g,h,a,b,c); - ROUND(t+6, c,d,e,f,g,h,a,b); - ROUND(t+7, b,c,d,e,f,g,h,a); - } - - { - uint64 tmp; -#define UPDATE(state, local) ( tmp = state, add(state, tmp, local) ) - UPDATE(s->h[0], a); UPDATE(s->h[1], b); - UPDATE(s->h[2], c); UPDATE(s->h[3], d); - UPDATE(s->h[4], e); UPDATE(s->h[5], f); - UPDATE(s->h[6], g); UPDATE(s->h[7], h); - } -} - -/* ---------------------------------------------------------------------- - * Outer SHA512 algorithm: take an arbitrary length byte string, - * convert it into 16-doubleword blocks with the prescribed padding - * at the end, and pass those blocks to the core SHA512 algorithm. - */ - -void SHA512_Init(SHA512_State *s) { - int i; - SHA512_Core_Init(s); - s->blkused = 0; - for (i = 0; i < 4; i++) - s->len[i] = 0; -} - -void SHA512_Bytes(SHA512_State *s, const void *p, int len) { - unsigned char *q = (unsigned char *)p; - uint64 wordblock[16]; - uint32 lenw = len; - int i; - - /* - * Update the length field. - */ - for (i = 0; i < 4; i++) { - s->len[i] += lenw; - lenw = (s->len[i] < lenw); - } - - if (s->blkused && s->blkused+len < BLKSIZE) { - /* - * Trivial case: just add to the block. - */ - memcpy(s->block + s->blkused, q, len); - s->blkused += len; - } else { - /* - * We must complete and process at least one block. - */ - while (s->blkused + len >= BLKSIZE) { - memcpy(s->block + s->blkused, q, BLKSIZE - s->blkused); - q += BLKSIZE - s->blkused; - len -= BLKSIZE - s->blkused; - /* Now process the block. Gather bytes big-endian into words */ - for (i = 0; i < 16; i++) { - uint32 h, l; - h = ( ((uint32)s->block[i*8+0]) << 24 ) | - ( ((uint32)s->block[i*8+1]) << 16 ) | - ( ((uint32)s->block[i*8+2]) << 8 ) | - ( ((uint32)s->block[i*8+3]) << 0 ); - l = ( ((uint32)s->block[i*8+4]) << 24 ) | - ( ((uint32)s->block[i*8+5]) << 16 ) | - ( ((uint32)s->block[i*8+6]) << 8 ) | - ( ((uint32)s->block[i*8+7]) << 0 ); - BUILD(wordblock[i], h, l); - } - SHA512_Block(s, wordblock); - s->blkused = 0; - } - memcpy(s->block, q, len); - s->blkused = len; - } -} - -void SHA512_Final(SHA512_State *s, unsigned char *digest) { - int i; - int pad; - unsigned char c[BLKSIZE]; - uint32 len[4]; - - if (s->blkused >= BLKSIZE-16) - pad = (BLKSIZE-16) + BLKSIZE - s->blkused; - else - pad = (BLKSIZE-16) - s->blkused; - - for (i = 4; i-- ;) { - uint32 lenhi = s->len[i]; - uint32 lenlo = i > 0 ? s->len[i-1] : 0; - len[i] = (lenhi << 3) | (lenlo >> (32-3)); - } - - memset(c, 0, pad); - c[0] = 0x80; - SHA512_Bytes(s, &c, pad); - - for (i = 0; i < 4; i++) { - c[i*4+0] = (len[3-i] >> 24) & 0xFF; - c[i*4+1] = (len[3-i] >> 16) & 0xFF; - c[i*4+2] = (len[3-i] >> 8) & 0xFF; - c[i*4+3] = (len[3-i] >> 0) & 0xFF; - } - - SHA512_Bytes(s, &c, 16); - - for (i = 0; i < 8; i++) { - uint32 h, l; - EXTRACT(h, l, s->h[i]); - digest[i*8+0] = (h >> 24) & 0xFF; - digest[i*8+1] = (h >> 16) & 0xFF; - digest[i*8+2] = (h >> 8) & 0xFF; - digest[i*8+3] = (h >> 0) & 0xFF; - digest[i*8+4] = (l >> 24) & 0xFF; - digest[i*8+5] = (l >> 16) & 0xFF; - digest[i*8+6] = (l >> 8) & 0xFF; - digest[i*8+7] = (l >> 0) & 0xFF; - } -} - -void SHA512_Simple(const void *p, int len, unsigned char *output) { - SHA512_State s; - - SHA512_Init(&s); - SHA512_Bytes(&s, p, len); - SHA512_Final(&s, output); -} - -#ifdef TEST - -#include -#include -#include - -int main(void) { - unsigned char digest[64]; - int i, j, errors; - - struct { - const char *teststring; - unsigned char digest512[64]; - } tests[] = { - { "abc", { - 0xdd, 0xaf, 0x35, 0xa1, 0x93, 0x61, 0x7a, 0xba, - 0xcc, 0x41, 0x73, 0x49, 0xae, 0x20, 0x41, 0x31, - 0x12, 0xe6, 0xfa, 0x4e, 0x89, 0xa9, 0x7e, 0xa2, - 0x0a, 0x9e, 0xee, 0xe6, 0x4b, 0x55, 0xd3, 0x9a, - 0x21, 0x92, 0x99, 0x2a, 0x27, 0x4f, 0xc1, 0xa8, - 0x36, 0xba, 0x3c, 0x23, 0xa3, 0xfe, 0xeb, 0xbd, - 0x45, 0x4d, 0x44, 0x23, 0x64, 0x3c, 0xe8, 0x0e, - 0x2a, 0x9a, 0xc9, 0x4f, 0xa5, 0x4c, 0xa4, 0x9f, - } }, - { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn" - "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", { - 0x8e, 0x95, 0x9b, 0x75, 0xda, 0xe3, 0x13, 0xda, - 0x8c, 0xf4, 0xf7, 0x28, 0x14, 0xfc, 0x14, 0x3f, - 0x8f, 0x77, 0x79, 0xc6, 0xeb, 0x9f, 0x7f, 0xa1, - 0x72, 0x99, 0xae, 0xad, 0xb6, 0x88, 0x90, 0x18, - 0x50, 0x1d, 0x28, 0x9e, 0x49, 0x00, 0xf7, 0xe4, - 0x33, 0x1b, 0x99, 0xde, 0xc4, 0xb5, 0x43, 0x3a, - 0xc7, 0xd3, 0x29, 0xee, 0xb6, 0xdd, 0x26, 0x54, - 0x5e, 0x96, 0xe5, 0x5b, 0x87, 0x4b, 0xe9, 0x09, - } }, - { NULL, { - 0xe7, 0x18, 0x48, 0x3d, 0x0c, 0xe7, 0x69, 0x64, - 0x4e, 0x2e, 0x42, 0xc7, 0xbc, 0x15, 0xb4, 0x63, - 0x8e, 0x1f, 0x98, 0xb1, 0x3b, 0x20, 0x44, 0x28, - 0x56, 0x32, 0xa8, 0x03, 0xaf, 0xa9, 0x73, 0xeb, - 0xde, 0x0f, 0xf2, 0x44, 0x87, 0x7e, 0xa6, 0x0a, - 0x4c, 0xb0, 0x43, 0x2c, 0xe5, 0x77, 0xc3, 0x1b, - 0xeb, 0x00, 0x9c, 0x5c, 0x2c, 0x49, 0xaa, 0x2e, - 0x4e, 0xad, 0xb2, 0x17, 0xad, 0x8c, 0xc0, 0x9b, - } }, - }; - - errors = 0; - - for (i = 0; i < sizeof(tests) / sizeof(*tests); i++) { - if (tests[i].teststring) { - SHA512_Simple(tests[i].teststring, - strlen(tests[i].teststring), digest); - } else { - SHA512_State s; - int n; - SHA512_Init(&s); - for (n = 0; n < 1000000 / 40; n++) - SHA512_Bytes(&s, "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", - 40); - SHA512_Final(&s, digest); - } - for (j = 0; j < 64; j++) { - if (digest[j] != tests[i].digest512[j]) { - fprintf(stderr, - "\"%s\" digest512 byte %d should be 0x%02x, is 0x%02x\n", - tests[i].teststring, j, tests[i].digest512[j], - digest[j]); - errors++; - } - } - - } - - printf("%d errors\n", errors); - - return 0; -} - -#endif diff --git a/tools/plink/sshsha.c b/tools/plink/sshsha.c deleted file mode 100644 index d1c798126..000000000 --- a/tools/plink/sshsha.c +++ /dev/null @@ -1,411 +0,0 @@ -/* - * SHA1 hash algorithm. Used in SSH-2 as a MAC, and the transform is - * also used as a `stirring' function for the PuTTY random number - * pool. Implemented directly from the specification by Simon - * Tatham. - */ - -#include "ssh.h" - -/* ---------------------------------------------------------------------- - * Core SHA algorithm: processes 16-word blocks into a message digest. - */ - -#define rol(x,y) ( ((x) << (y)) | (((uint32)x) >> (32-y)) ) - -static void SHA_Core_Init(uint32 h[5]) -{ - h[0] = 0x67452301; - h[1] = 0xefcdab89; - h[2] = 0x98badcfe; - h[3] = 0x10325476; - h[4] = 0xc3d2e1f0; -} - -void SHATransform(word32 * digest, word32 * block) -{ - word32 w[80]; - word32 a, b, c, d, e; - int t; - - for (t = 0; t < 16; t++) - w[t] = block[t]; - - for (t = 16; t < 80; t++) { - word32 tmp = w[t - 3] ^ w[t - 8] ^ w[t - 14] ^ w[t - 16]; - w[t] = rol(tmp, 1); - } - - a = digest[0]; - b = digest[1]; - c = digest[2]; - d = digest[3]; - e = digest[4]; - - for (t = 0; t < 20; t++) { - word32 tmp = - rol(a, 5) + ((b & c) | (d & ~b)) + e + w[t] + 0x5a827999; - e = d; - d = c; - c = rol(b, 30); - b = a; - a = tmp; - } - for (t = 20; t < 40; t++) { - word32 tmp = rol(a, 5) + (b ^ c ^ d) + e + w[t] + 0x6ed9eba1; - e = d; - d = c; - c = rol(b, 30); - b = a; - a = tmp; - } - for (t = 40; t < 60; t++) { - word32 tmp = rol(a, - 5) + ((b & c) | (b & d) | (c & d)) + e + w[t] + - 0x8f1bbcdc; - e = d; - d = c; - c = rol(b, 30); - b = a; - a = tmp; - } - for (t = 60; t < 80; t++) { - word32 tmp = rol(a, 5) + (b ^ c ^ d) + e + w[t] + 0xca62c1d6; - e = d; - d = c; - c = rol(b, 30); - b = a; - a = tmp; - } - - digest[0] += a; - digest[1] += b; - digest[2] += c; - digest[3] += d; - digest[4] += e; -} - -/* ---------------------------------------------------------------------- - * Outer SHA algorithm: take an arbitrary length byte string, - * convert it into 16-word blocks with the prescribed padding at - * the end, and pass those blocks to the core SHA algorithm. - */ - -void SHA_Init(SHA_State * s) -{ - SHA_Core_Init(s->h); - s->blkused = 0; - s->lenhi = s->lenlo = 0; -} - -void SHA_Bytes(SHA_State * s, void *p, int len) -{ - unsigned char *q = (unsigned char *) p; - uint32 wordblock[16]; - uint32 lenw = len; - int i; - - /* - * Update the length field. - */ - s->lenlo += lenw; - s->lenhi += (s->lenlo < lenw); - - if (s->blkused && s->blkused + len < 64) { - /* - * Trivial case: just add to the block. - */ - memcpy(s->block + s->blkused, q, len); - s->blkused += len; - } else { - /* - * We must complete and process at least one block. - */ - while (s->blkused + len >= 64) { - memcpy(s->block + s->blkused, q, 64 - s->blkused); - q += 64 - s->blkused; - len -= 64 - s->blkused; - /* Now process the block. Gather bytes big-endian into words */ - for (i = 0; i < 16; i++) { - wordblock[i] = - (((uint32) s->block[i * 4 + 0]) << 24) | - (((uint32) s->block[i * 4 + 1]) << 16) | - (((uint32) s->block[i * 4 + 2]) << 8) | - (((uint32) s->block[i * 4 + 3]) << 0); - } - SHATransform(s->h, wordblock); - s->blkused = 0; - } - memcpy(s->block, q, len); - s->blkused = len; - } -} - -void SHA_Final(SHA_State * s, unsigned char *output) -{ - int i; - int pad; - unsigned char c[64]; - uint32 lenhi, lenlo; - - if (s->blkused >= 56) - pad = 56 + 64 - s->blkused; - else - pad = 56 - s->blkused; - - lenhi = (s->lenhi << 3) | (s->lenlo >> (32 - 3)); - lenlo = (s->lenlo << 3); - - memset(c, 0, pad); - c[0] = 0x80; - SHA_Bytes(s, &c, pad); - - c[0] = (lenhi >> 24) & 0xFF; - c[1] = (lenhi >> 16) & 0xFF; - c[2] = (lenhi >> 8) & 0xFF; - c[3] = (lenhi >> 0) & 0xFF; - c[4] = (lenlo >> 24) & 0xFF; - c[5] = (lenlo >> 16) & 0xFF; - c[6] = (lenlo >> 8) & 0xFF; - c[7] = (lenlo >> 0) & 0xFF; - - SHA_Bytes(s, &c, 8); - - for (i = 0; i < 5; i++) { - output[i * 4] = (s->h[i] >> 24) & 0xFF; - output[i * 4 + 1] = (s->h[i] >> 16) & 0xFF; - output[i * 4 + 2] = (s->h[i] >> 8) & 0xFF; - output[i * 4 + 3] = (s->h[i]) & 0xFF; - } -} - -void SHA_Simple(void *p, int len, unsigned char *output) -{ - SHA_State s; - - SHA_Init(&s); - SHA_Bytes(&s, p, len); - SHA_Final(&s, output); -} - -/* - * Thin abstraction for things where hashes are pluggable. - */ - -static void *sha1_init(void) -{ - SHA_State *s; - - s = snew(SHA_State); - SHA_Init(s); - return s; -} - -static void sha1_bytes(void *handle, void *p, int len) -{ - SHA_State *s = handle; - - SHA_Bytes(s, p, len); -} - -static void sha1_final(void *handle, unsigned char *output) -{ - SHA_State *s = handle; - - SHA_Final(s, output); - sfree(s); -} - -const struct ssh_hash ssh_sha1 = { - sha1_init, sha1_bytes, sha1_final, 20, "SHA-1" -}; - -/* ---------------------------------------------------------------------- - * The above is the SHA-1 algorithm itself. Now we implement the - * HMAC wrapper on it. - */ - -static void *sha1_make_context(void) -{ - return snewn(3, SHA_State); -} - -static void sha1_free_context(void *handle) -{ - sfree(handle); -} - -static void sha1_key_internal(void *handle, unsigned char *key, int len) -{ - SHA_State *keys = (SHA_State *)handle; - unsigned char foo[64]; - int i; - - memset(foo, 0x36, 64); - for (i = 0; i < len && i < 64; i++) - foo[i] ^= key[i]; - SHA_Init(&keys[0]); - SHA_Bytes(&keys[0], foo, 64); - - memset(foo, 0x5C, 64); - for (i = 0; i < len && i < 64; i++) - foo[i] ^= key[i]; - SHA_Init(&keys[1]); - SHA_Bytes(&keys[1], foo, 64); - - memset(foo, 0, 64); /* burn the evidence */ -} - -static void sha1_key(void *handle, unsigned char *key) -{ - sha1_key_internal(handle, key, 20); -} - -static void sha1_key_buggy(void *handle, unsigned char *key) -{ - sha1_key_internal(handle, key, 16); -} - -static void hmacsha1_start(void *handle) -{ - SHA_State *keys = (SHA_State *)handle; - - keys[2] = keys[0]; /* structure copy */ -} - -static void hmacsha1_bytes(void *handle, unsigned char const *blk, int len) -{ - SHA_State *keys = (SHA_State *)handle; - SHA_Bytes(&keys[2], (void *)blk, len); -} - -static void hmacsha1_genresult(void *handle, unsigned char *hmac) -{ - SHA_State *keys = (SHA_State *)handle; - SHA_State s; - unsigned char intermediate[20]; - - s = keys[2]; /* structure copy */ - SHA_Final(&s, intermediate); - s = keys[1]; /* structure copy */ - SHA_Bytes(&s, intermediate, 20); - SHA_Final(&s, hmac); -} - -static void sha1_do_hmac(void *handle, unsigned char *blk, int len, - unsigned long seq, unsigned char *hmac) -{ - unsigned char seqbuf[4]; - - seqbuf[0] = (unsigned char) ((seq >> 24) & 0xFF); - seqbuf[1] = (unsigned char) ((seq >> 16) & 0xFF); - seqbuf[2] = (unsigned char) ((seq >> 8) & 0xFF); - seqbuf[3] = (unsigned char) ((seq) & 0xFF); - - hmacsha1_start(handle); - hmacsha1_bytes(handle, seqbuf, 4); - hmacsha1_bytes(handle, blk, len); - hmacsha1_genresult(handle, hmac); -} - -static void sha1_generate(void *handle, unsigned char *blk, int len, - unsigned long seq) -{ - sha1_do_hmac(handle, blk, len, seq, blk + len); -} - -static int hmacsha1_verresult(void *handle, unsigned char const *hmac) -{ - unsigned char correct[20]; - hmacsha1_genresult(handle, correct); - return !memcmp(correct, hmac, 20); -} - -static int sha1_verify(void *handle, unsigned char *blk, int len, - unsigned long seq) -{ - unsigned char correct[20]; - sha1_do_hmac(handle, blk, len, seq, correct); - return !memcmp(correct, blk + len, 20); -} - -static void hmacsha1_96_genresult(void *handle, unsigned char *hmac) -{ - unsigned char full[20]; - hmacsha1_genresult(handle, full); - memcpy(hmac, full, 12); -} - -static void sha1_96_generate(void *handle, unsigned char *blk, int len, - unsigned long seq) -{ - unsigned char full[20]; - sha1_do_hmac(handle, blk, len, seq, full); - memcpy(blk + len, full, 12); -} - -static int hmacsha1_96_verresult(void *handle, unsigned char const *hmac) -{ - unsigned char correct[20]; - hmacsha1_genresult(handle, correct); - return !memcmp(correct, hmac, 12); -} - -static int sha1_96_verify(void *handle, unsigned char *blk, int len, - unsigned long seq) -{ - unsigned char correct[20]; - sha1_do_hmac(handle, blk, len, seq, correct); - return !memcmp(correct, blk + len, 12); -} - -void hmac_sha1_simple(void *key, int keylen, void *data, int datalen, - unsigned char *output) { - SHA_State states[2]; - unsigned char intermediate[20]; - - sha1_key_internal(states, key, keylen); - SHA_Bytes(&states[0], data, datalen); - SHA_Final(&states[0], intermediate); - - SHA_Bytes(&states[1], intermediate, 20); - SHA_Final(&states[1], output); -} - -const struct ssh_mac ssh_hmac_sha1 = { - sha1_make_context, sha1_free_context, sha1_key, - sha1_generate, sha1_verify, - hmacsha1_start, hmacsha1_bytes, hmacsha1_genresult, hmacsha1_verresult, - "hmac-sha1", - 20, - "HMAC-SHA1" -}; - -const struct ssh_mac ssh_hmac_sha1_96 = { - sha1_make_context, sha1_free_context, sha1_key, - sha1_96_generate, sha1_96_verify, - hmacsha1_start, hmacsha1_bytes, - hmacsha1_96_genresult, hmacsha1_96_verresult, - "hmac-sha1-96", - 12, - "HMAC-SHA1-96" -}; - -const struct ssh_mac ssh_hmac_sha1_buggy = { - sha1_make_context, sha1_free_context, sha1_key_buggy, - sha1_generate, sha1_verify, - hmacsha1_start, hmacsha1_bytes, hmacsha1_genresult, hmacsha1_verresult, - "hmac-sha1", - 20, - "bug-compatible HMAC-SHA1" -}; - -const struct ssh_mac ssh_hmac_sha1_96_buggy = { - sha1_make_context, sha1_free_context, sha1_key_buggy, - sha1_96_generate, sha1_96_verify, - hmacsha1_start, hmacsha1_bytes, - hmacsha1_96_genresult, hmacsha1_96_verresult, - "hmac-sha1-96", - 12, - "bug-compatible HMAC-SHA1-96" -}; diff --git a/tools/plink/sshzlib.c b/tools/plink/sshzlib.c deleted file mode 100644 index 7d37141c7..000000000 --- a/tools/plink/sshzlib.c +++ /dev/null @@ -1,1382 +0,0 @@ -/* - * Zlib (RFC1950 / RFC1951) compression for PuTTY. - * - * There will no doubt be criticism of my decision to reimplement - * Zlib compression from scratch instead of using the existing zlib - * code. People will cry `reinventing the wheel'; they'll claim - * that the `fundamental basis of OSS' is code reuse; they'll want - * to see a really good reason for me having chosen not to use the - * existing code. - * - * Well, here are my reasons. Firstly, I don't want to link the - * whole of zlib into the PuTTY binary; PuTTY is justifiably proud - * of its small size and I think zlib contains a lot of unnecessary - * baggage for the kind of compression that SSH requires. - * - * Secondly, I also don't like the alternative of using zlib.dll. - * Another thing PuTTY is justifiably proud of is its ease of - * installation, and the last thing I want to do is to start - * mandating DLLs. Not only that, but there are two _kinds_ of - * zlib.dll kicking around, one with C calling conventions on the - * exported functions and another with WINAPI conventions, and - * there would be a significant danger of getting the wrong one. - * - * Thirdly, there seems to be a difference of opinion on the IETF - * secsh mailing list about the correct way to round off a - * compressed packet and start the next. In particular, there's - * some talk of switching to a mechanism zlib isn't currently - * capable of supporting (see below for an explanation). Given that - * sort of uncertainty, I thought it might be better to have code - * that will support even the zlib-incompatible worst case. - * - * Fourthly, it's a _second implementation_. Second implementations - * are fundamentally a Good Thing in standardisation efforts. The - * difference of opinion mentioned above has arisen _precisely_ - * because there has been only one zlib implementation and - * everybody has used it. I don't intend that this should happen - * again. - */ - -#include -#include - -#ifdef ZLIB_STANDALONE - -/* - * This module also makes a handy zlib decoding tool for when - * you're picking apart Zip files or PDFs or PNGs. If you compile - * it with ZLIB_STANDALONE defined, it builds on its own and - * becomes a command-line utility. - * - * Therefore, here I provide a self-contained implementation of the - * macros required from the rest of the PuTTY sources. - */ -#define snew(type) ( (type *) malloc(sizeof(type)) ) -#define snewn(n, type) ( (type *) malloc((n) * sizeof(type)) ) -#define sresize(x, n, type) ( (type *) realloc((x), (n) * sizeof(type)) ) -#define sfree(x) ( free((x)) ) - -#else -#include "ssh.h" -#endif - -#ifndef FALSE -#define FALSE 0 -#define TRUE (!FALSE) -#endif - -/* ---------------------------------------------------------------------- - * Basic LZ77 code. This bit is designed modularly, so it could be - * ripped out and used in a different LZ77 compressor. Go to it, - * and good luck :-) - */ - -struct LZ77InternalContext; -struct LZ77Context { - struct LZ77InternalContext *ictx; - void *userdata; - void (*literal) (struct LZ77Context * ctx, unsigned char c); - void (*match) (struct LZ77Context * ctx, int distance, int len); -}; - -/* - * Initialise the private fields of an LZ77Context. It's up to the - * user to initialise the public fields. - */ -static int lz77_init(struct LZ77Context *ctx); - -/* - * Supply data to be compressed. Will update the private fields of - * the LZ77Context, and will call literal() and match() to output. - * If `compress' is FALSE, it will never emit a match, but will - * instead call literal() for everything. - */ -static void lz77_compress(struct LZ77Context *ctx, - unsigned char *data, int len, int compress); - -/* - * Modifiable parameters. - */ -#define WINSIZE 32768 /* window size. Must be power of 2! */ -#define HASHMAX 2039 /* one more than max hash value */ -#define MAXMATCH 32 /* how many matches we track */ -#define HASHCHARS 3 /* how many chars make a hash */ - -/* - * This compressor takes a less slapdash approach than the - * gzip/zlib one. Rather than allowing our hash chains to fall into - * disuse near the far end, we keep them doubly linked so we can - * _find_ the far end, and then every time we add a new byte to the - * window (thus rolling round by one and removing the previous - * byte), we can carefully remove the hash chain entry. - */ - -#define INVALID -1 /* invalid hash _and_ invalid offset */ -struct WindowEntry { - short next, prev; /* array indices within the window */ - short hashval; -}; - -struct HashEntry { - short first; /* window index of first in chain */ -}; - -struct Match { - int distance, len; -}; - -struct LZ77InternalContext { - struct WindowEntry win[WINSIZE]; - unsigned char data[WINSIZE]; - int winpos; - struct HashEntry hashtab[HASHMAX]; - unsigned char pending[HASHCHARS]; - int npending; -}; - -static int lz77_hash(unsigned char *data) -{ - return (257 * data[0] + 263 * data[1] + 269 * data[2]) % HASHMAX; -} - -static int lz77_init(struct LZ77Context *ctx) -{ - struct LZ77InternalContext *st; - int i; - - st = snew(struct LZ77InternalContext); - if (!st) - return 0; - - ctx->ictx = st; - - for (i = 0; i < WINSIZE; i++) - st->win[i].next = st->win[i].prev = st->win[i].hashval = INVALID; - for (i = 0; i < HASHMAX; i++) - st->hashtab[i].first = INVALID; - st->winpos = 0; - - st->npending = 0; - - return 1; -} - -static void lz77_advance(struct LZ77InternalContext *st, - unsigned char c, int hash) -{ - int off; - - /* - * Remove the hash entry at winpos from the tail of its chain, - * or empty the chain if it's the only thing on the chain. - */ - if (st->win[st->winpos].prev != INVALID) { - st->win[st->win[st->winpos].prev].next = INVALID; - } else if (st->win[st->winpos].hashval != INVALID) { - st->hashtab[st->win[st->winpos].hashval].first = INVALID; - } - - /* - * Create a new entry at winpos and add it to the head of its - * hash chain. - */ - st->win[st->winpos].hashval = hash; - st->win[st->winpos].prev = INVALID; - off = st->win[st->winpos].next = st->hashtab[hash].first; - st->hashtab[hash].first = st->winpos; - if (off != INVALID) - st->win[off].prev = st->winpos; - st->data[st->winpos] = c; - - /* - * Advance the window pointer. - */ - st->winpos = (st->winpos + 1) & (WINSIZE - 1); -} - -#define CHARAT(k) ( (k)<0 ? st->data[(st->winpos+k)&(WINSIZE-1)] : data[k] ) - -static void lz77_compress(struct LZ77Context *ctx, - unsigned char *data, int len, int compress) -{ - struct LZ77InternalContext *st = ctx->ictx; - int i, hash, distance, off, nmatch, matchlen, advance; - struct Match defermatch, matches[MAXMATCH]; - int deferchr; - - /* - * Add any pending characters from last time to the window. (We - * might not be able to.) - */ - for (i = 0; i < st->npending; i++) { - unsigned char foo[HASHCHARS]; - int j; - if (len + st->npending - i < HASHCHARS) { - /* Update the pending array. */ - for (j = i; j < st->npending; j++) - st->pending[j - i] = st->pending[j]; - break; - } - for (j = 0; j < HASHCHARS; j++) - foo[j] = (i + j < st->npending ? st->pending[i + j] : - data[i + j - st->npending]); - lz77_advance(st, foo[0], lz77_hash(foo)); - } - st->npending -= i; - - defermatch.distance = 0; /* appease compiler */ - defermatch.len = 0; - deferchr = '\0'; - while (len > 0) { - - /* Don't even look for a match, if we're not compressing. */ - if (compress && len >= HASHCHARS) { - /* - * Hash the next few characters. - */ - hash = lz77_hash(data); - - /* - * Look the hash up in the corresponding hash chain and see - * what we can find. - */ - nmatch = 0; - for (off = st->hashtab[hash].first; - off != INVALID; off = st->win[off].next) { - /* distance = 1 if off == st->winpos-1 */ - /* distance = WINSIZE if off == st->winpos */ - distance = - WINSIZE - (off + WINSIZE - st->winpos) % WINSIZE; - for (i = 0; i < HASHCHARS; i++) - if (CHARAT(i) != CHARAT(i - distance)) - break; - if (i == HASHCHARS) { - matches[nmatch].distance = distance; - matches[nmatch].len = 3; - if (++nmatch >= MAXMATCH) - break; - } - } - } else { - nmatch = 0; - hash = INVALID; - } - - if (nmatch > 0) { - /* - * We've now filled up matches[] with nmatch potential - * matches. Follow them down to find the longest. (We - * assume here that it's always worth favouring a - * longer match over a shorter one.) - */ - matchlen = HASHCHARS; - while (matchlen < len) { - int j; - for (i = j = 0; i < nmatch; i++) { - if (CHARAT(matchlen) == - CHARAT(matchlen - matches[i].distance)) { - matches[j++] = matches[i]; - } - } - if (j == 0) - break; - matchlen++; - nmatch = j; - } - - /* - * We've now got all the longest matches. We favour the - * shorter distances, which means we go with matches[0]. - * So see if we want to defer it or throw it away. - */ - matches[0].len = matchlen; - if (defermatch.len > 0) { - if (matches[0].len > defermatch.len + 1) { - /* We have a better match. Emit the deferred char, - * and defer this match. */ - ctx->literal(ctx, (unsigned char) deferchr); - defermatch = matches[0]; - deferchr = data[0]; - advance = 1; - } else { - /* We don't have a better match. Do the deferred one. */ - ctx->match(ctx, defermatch.distance, defermatch.len); - advance = defermatch.len - 1; - defermatch.len = 0; - } - } else { - /* There was no deferred match. Defer this one. */ - defermatch = matches[0]; - deferchr = data[0]; - advance = 1; - } - } else { - /* - * We found no matches. Emit the deferred match, if - * any; otherwise emit a literal. - */ - if (defermatch.len > 0) { - ctx->match(ctx, defermatch.distance, defermatch.len); - advance = defermatch.len - 1; - defermatch.len = 0; - } else { - ctx->literal(ctx, data[0]); - advance = 1; - } - } - - /* - * Now advance the position by `advance' characters, - * keeping the window and hash chains consistent. - */ - while (advance > 0) { - if (len >= HASHCHARS) { - lz77_advance(st, *data, lz77_hash(data)); - } else { - st->pending[st->npending++] = *data; - } - data++; - len--; - advance--; - } - } -} - -/* ---------------------------------------------------------------------- - * Zlib compression. We always use the static Huffman tree option. - * Mostly this is because it's hard to scan a block in advance to - * work out better trees; dynamic trees are great when you're - * compressing a large file under no significant time constraint, - * but when you're compressing little bits in real time, things get - * hairier. - * - * I suppose it's possible that I could compute Huffman trees based - * on the frequencies in the _previous_ block, as a sort of - * heuristic, but I'm not confident that the gain would balance out - * having to transmit the trees. - */ - -struct Outbuf { - unsigned char *outbuf; - int outlen, outsize; - unsigned long outbits; - int noutbits; - int firstblock; - int comp_disabled; -}; - -static void outbits(struct Outbuf *out, unsigned long bits, int nbits) -{ - assert(out->noutbits + nbits <= 32); - out->outbits |= bits << out->noutbits; - out->noutbits += nbits; - while (out->noutbits >= 8) { - if (out->outlen >= out->outsize) { - out->outsize = out->outlen + 64; - out->outbuf = sresize(out->outbuf, out->outsize, unsigned char); - } - out->outbuf[out->outlen++] = (unsigned char) (out->outbits & 0xFF); - out->outbits >>= 8; - out->noutbits -= 8; - } -} - -static const unsigned char mirrorbytes[256] = { - 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, - 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, - 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, - 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, - 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, - 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, - 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, - 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, - 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, - 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, - 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, - 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, - 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, - 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, - 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, - 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, - 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, - 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, - 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, - 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, - 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, - 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, - 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, - 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, - 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, - 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, - 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, - 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, - 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, - 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, - 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, - 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, -}; - -typedef struct { - short code, extrabits; - int min, max; -} coderecord; - -static const coderecord lencodes[] = { - {257, 0, 3, 3}, - {258, 0, 4, 4}, - {259, 0, 5, 5}, - {260, 0, 6, 6}, - {261, 0, 7, 7}, - {262, 0, 8, 8}, - {263, 0, 9, 9}, - {264, 0, 10, 10}, - {265, 1, 11, 12}, - {266, 1, 13, 14}, - {267, 1, 15, 16}, - {268, 1, 17, 18}, - {269, 2, 19, 22}, - {270, 2, 23, 26}, - {271, 2, 27, 30}, - {272, 2, 31, 34}, - {273, 3, 35, 42}, - {274, 3, 43, 50}, - {275, 3, 51, 58}, - {276, 3, 59, 66}, - {277, 4, 67, 82}, - {278, 4, 83, 98}, - {279, 4, 99, 114}, - {280, 4, 115, 130}, - {281, 5, 131, 162}, - {282, 5, 163, 194}, - {283, 5, 195, 226}, - {284, 5, 227, 257}, - {285, 0, 258, 258}, -}; - -static const coderecord distcodes[] = { - {0, 0, 1, 1}, - {1, 0, 2, 2}, - {2, 0, 3, 3}, - {3, 0, 4, 4}, - {4, 1, 5, 6}, - {5, 1, 7, 8}, - {6, 2, 9, 12}, - {7, 2, 13, 16}, - {8, 3, 17, 24}, - {9, 3, 25, 32}, - {10, 4, 33, 48}, - {11, 4, 49, 64}, - {12, 5, 65, 96}, - {13, 5, 97, 128}, - {14, 6, 129, 192}, - {15, 6, 193, 256}, - {16, 7, 257, 384}, - {17, 7, 385, 512}, - {18, 8, 513, 768}, - {19, 8, 769, 1024}, - {20, 9, 1025, 1536}, - {21, 9, 1537, 2048}, - {22, 10, 2049, 3072}, - {23, 10, 3073, 4096}, - {24, 11, 4097, 6144}, - {25, 11, 6145, 8192}, - {26, 12, 8193, 12288}, - {27, 12, 12289, 16384}, - {28, 13, 16385, 24576}, - {29, 13, 24577, 32768}, -}; - -static void zlib_literal(struct LZ77Context *ectx, unsigned char c) -{ - struct Outbuf *out = (struct Outbuf *) ectx->userdata; - - if (out->comp_disabled) { - /* - * We're in an uncompressed block, so just output the byte. - */ - outbits(out, c, 8); - return; - } - - if (c <= 143) { - /* 0 through 143 are 8 bits long starting at 00110000. */ - outbits(out, mirrorbytes[0x30 + c], 8); - } else { - /* 144 through 255 are 9 bits long starting at 110010000. */ - outbits(out, 1 + 2 * mirrorbytes[0x90 - 144 + c], 9); - } -} - -static void zlib_match(struct LZ77Context *ectx, int distance, int len) -{ - const coderecord *d, *l; - int i, j, k; - struct Outbuf *out = (struct Outbuf *) ectx->userdata; - - assert(!out->comp_disabled); - - while (len > 0) { - int thislen; - - /* - * We can transmit matches of lengths 3 through 258 - * inclusive. So if len exceeds 258, we must transmit in - * several steps, with 258 or less in each step. - * - * Specifically: if len >= 261, we can transmit 258 and be - * sure of having at least 3 left for the next step. And if - * len <= 258, we can just transmit len. But if len == 259 - * or 260, we must transmit len-3. - */ - thislen = (len > 260 ? 258 : len <= 258 ? len : len - 3); - len -= thislen; - - /* - * Binary-search to find which length code we're - * transmitting. - */ - i = -1; - j = sizeof(lencodes) / sizeof(*lencodes); - while (1) { - assert(j - i >= 2); - k = (j + i) / 2; - if (thislen < lencodes[k].min) - j = k; - else if (thislen > lencodes[k].max) - i = k; - else { - l = &lencodes[k]; - break; /* found it! */ - } - } - - /* - * Transmit the length code. 256-279 are seven bits - * starting at 0000000; 280-287 are eight bits starting at - * 11000000. - */ - if (l->code <= 279) { - outbits(out, mirrorbytes[(l->code - 256) * 2], 7); - } else { - outbits(out, mirrorbytes[0xc0 - 280 + l->code], 8); - } - - /* - * Transmit the extra bits. - */ - if (l->extrabits) - outbits(out, thislen - l->min, l->extrabits); - - /* - * Binary-search to find which distance code we're - * transmitting. - */ - i = -1; - j = sizeof(distcodes) / sizeof(*distcodes); - while (1) { - assert(j - i >= 2); - k = (j + i) / 2; - if (distance < distcodes[k].min) - j = k; - else if (distance > distcodes[k].max) - i = k; - else { - d = &distcodes[k]; - break; /* found it! */ - } - } - - /* - * Transmit the distance code. Five bits starting at 00000. - */ - outbits(out, mirrorbytes[d->code * 8], 5); - - /* - * Transmit the extra bits. - */ - if (d->extrabits) - outbits(out, distance - d->min, d->extrabits); - } -} - -void *zlib_compress_init(void) -{ - struct Outbuf *out; - struct LZ77Context *ectx = snew(struct LZ77Context); - - lz77_init(ectx); - ectx->literal = zlib_literal; - ectx->match = zlib_match; - - out = snew(struct Outbuf); - out->outbits = out->noutbits = 0; - out->firstblock = 1; - out->comp_disabled = FALSE; - ectx->userdata = out; - - return ectx; -} - -void zlib_compress_cleanup(void *handle) -{ - struct LZ77Context *ectx = (struct LZ77Context *)handle; - sfree(ectx->userdata); - sfree(ectx->ictx); - sfree(ectx); -} - -/* - * Turn off actual LZ77 analysis for one block, to facilitate - * construction of a precise-length IGNORE packet. Returns the - * length adjustment (which is only valid for packets < 65536 - * bytes, but that seems reasonable enough). - */ -static int zlib_disable_compression(void *handle) -{ - struct LZ77Context *ectx = (struct LZ77Context *)handle; - struct Outbuf *out = (struct Outbuf *) ectx->userdata; - int n; - - out->comp_disabled = TRUE; - - n = 0; - /* - * If this is the first block, we will start by outputting two - * header bytes, and then three bits to begin an uncompressed - * block. This will cost three bytes (because we will start on - * a byte boundary, this is certain). - */ - if (out->firstblock) { - n = 3; - } else { - /* - * Otherwise, we will output seven bits to close the - * previous static block, and _then_ three bits to begin an - * uncompressed block, and then flush the current byte. - * This may cost two bytes or three, depending on noutbits. - */ - n += (out->noutbits + 10) / 8; - } - - /* - * Now we output four bytes for the length / ~length pair in - * the uncompressed block. - */ - n += 4; - - return n; -} - -int zlib_compress_block(void *handle, unsigned char *block, int len, - unsigned char **outblock, int *outlen) -{ - struct LZ77Context *ectx = (struct LZ77Context *)handle; - struct Outbuf *out = (struct Outbuf *) ectx->userdata; - int in_block; - - out->outbuf = NULL; - out->outlen = out->outsize = 0; - - /* - * If this is the first block, output the Zlib (RFC1950) header - * bytes 78 9C. (Deflate compression, 32K window size, default - * algorithm.) - */ - if (out->firstblock) { - outbits(out, 0x9C78, 16); - out->firstblock = 0; - - in_block = FALSE; - } else - in_block = TRUE; - - if (out->comp_disabled) { - if (in_block) - outbits(out, 0, 7); /* close static block */ - - while (len > 0) { - int blen = (len < 65535 ? len : 65535); - - /* - * Start a Deflate (RFC1951) uncompressed block. We - * transmit a zero bit (BFINAL=0), followed by two more - * zero bits (BTYPE=00). Of course these are in the - * wrong order (00 0), not that it matters. - */ - outbits(out, 0, 3); - - /* - * Output zero bits to align to a byte boundary. - */ - if (out->noutbits) - outbits(out, 0, 8 - out->noutbits); - - /* - * Output the block length, and then its one's - * complement. They're little-endian, so all we need to - * do is pass them straight to outbits() with bit count - * 16. - */ - outbits(out, blen, 16); - outbits(out, blen ^ 0xFFFF, 16); - - /* - * Do the `compression': we need to pass the data to - * lz77_compress so that it will be taken into account - * for subsequent (distance,length) pairs. But - * lz77_compress is passed FALSE, which means it won't - * actually find (or even look for) any matches; so - * every character will be passed straight to - * zlib_literal which will spot out->comp_disabled and - * emit in the uncompressed format. - */ - lz77_compress(ectx, block, blen, FALSE); - - len -= blen; - block += blen; - } - outbits(out, 2, 3); /* open new block */ - } else { - if (!in_block) { - /* - * Start a Deflate (RFC1951) fixed-trees block. We - * transmit a zero bit (BFINAL=0), followed by a zero - * bit and a one bit (BTYPE=01). Of course these are in - * the wrong order (01 0). - */ - outbits(out, 2, 3); - } - - /* - * Do the compression. - */ - lz77_compress(ectx, block, len, TRUE); - - /* - * End the block (by transmitting code 256, which is - * 0000000 in fixed-tree mode), and transmit some empty - * blocks to ensure we have emitted the byte containing the - * last piece of genuine data. There are three ways we can - * do this: - * - * - Minimal flush. Output end-of-block and then open a - * new static block. This takes 9 bits, which is - * guaranteed to flush out the last genuine code in the - * closed block; but allegedly zlib can't handle it. - * - * - Zlib partial flush. Output EOB, open and close an - * empty static block, and _then_ open the new block. - * This is the best zlib can handle. - * - * - Zlib sync flush. Output EOB, then an empty - * _uncompressed_ block (000, then sync to byte - * boundary, then send bytes 00 00 FF FF). Then open the - * new block. - * - * For the moment, we will use Zlib partial flush. - */ - outbits(out, 0, 7); /* close block */ - outbits(out, 2, 3 + 7); /* empty static block */ - outbits(out, 2, 3); /* open new block */ - } - - out->comp_disabled = FALSE; - - *outblock = out->outbuf; - *outlen = out->outlen; - - return 1; -} - -/* ---------------------------------------------------------------------- - * Zlib decompression. Of course, even though our compressor always - * uses static trees, our _decompressor_ has to be capable of - * handling dynamic trees if it sees them. - */ - -/* - * The way we work the Huffman decode is to have a table lookup on - * the first N bits of the input stream (in the order they arrive, - * of course, i.e. the first bit of the Huffman code is in bit 0). - * Each table entry lists the number of bits to consume, plus - * either an output code or a pointer to a secondary table. - */ -struct zlib_table; -struct zlib_tableentry; - -struct zlib_tableentry { - unsigned char nbits; - short code; - struct zlib_table *nexttable; -}; - -struct zlib_table { - int mask; /* mask applied to input bit stream */ - struct zlib_tableentry *table; -}; - -#define MAXCODELEN 16 -#define MAXSYMS 288 - -/* - * Build a single-level decode table for elements - * [minlength,maxlength) of the provided code/length tables, and - * recurse to build subtables. - */ -static struct zlib_table *zlib_mkonetab(int *codes, unsigned char *lengths, - int nsyms, - int pfx, int pfxbits, int bits) -{ - struct zlib_table *tab = snew(struct zlib_table); - int pfxmask = (1 << pfxbits) - 1; - int nbits, i, j, code; - - tab->table = snewn(1 << bits, struct zlib_tableentry); - tab->mask = (1 << bits) - 1; - - for (code = 0; code <= tab->mask; code++) { - tab->table[code].code = -1; - tab->table[code].nbits = 0; - tab->table[code].nexttable = NULL; - } - - for (i = 0; i < nsyms; i++) { - if (lengths[i] <= pfxbits || (codes[i] & pfxmask) != pfx) - continue; - code = (codes[i] >> pfxbits) & tab->mask; - for (j = code; j <= tab->mask; j += 1 << (lengths[i] - pfxbits)) { - tab->table[j].code = i; - nbits = lengths[i] - pfxbits; - if (tab->table[j].nbits < nbits) - tab->table[j].nbits = nbits; - } - } - for (code = 0; code <= tab->mask; code++) { - if (tab->table[code].nbits <= bits) - continue; - /* Generate a subtable. */ - tab->table[code].code = -1; - nbits = tab->table[code].nbits - bits; - if (nbits > 7) - nbits = 7; - tab->table[code].nbits = bits; - tab->table[code].nexttable = zlib_mkonetab(codes, lengths, nsyms, - pfx | (code << pfxbits), - pfxbits + bits, nbits); - } - - return tab; -} - -/* - * Build a decode table, given a set of Huffman tree lengths. - */ -static struct zlib_table *zlib_mktable(unsigned char *lengths, - int nlengths) -{ - int count[MAXCODELEN], startcode[MAXCODELEN], codes[MAXSYMS]; - int code, maxlen; - int i, j; - - /* Count the codes of each length. */ - maxlen = 0; - for (i = 1; i < MAXCODELEN; i++) - count[i] = 0; - for (i = 0; i < nlengths; i++) { - count[lengths[i]]++; - if (maxlen < lengths[i]) - maxlen = lengths[i]; - } - /* Determine the starting code for each length block. */ - code = 0; - for (i = 1; i < MAXCODELEN; i++) { - startcode[i] = code; - code += count[i]; - code <<= 1; - } - /* Determine the code for each symbol. Mirrored, of course. */ - for (i = 0; i < nlengths; i++) { - code = startcode[lengths[i]]++; - codes[i] = 0; - for (j = 0; j < lengths[i]; j++) { - codes[i] = (codes[i] << 1) | (code & 1); - code >>= 1; - } - } - - /* - * Now we have the complete list of Huffman codes. Build a - * table. - */ - return zlib_mkonetab(codes, lengths, nlengths, 0, 0, - maxlen < 9 ? maxlen : 9); -} - -static int zlib_freetable(struct zlib_table **ztab) -{ - struct zlib_table *tab; - int code; - - if (ztab == NULL) - return -1; - - if (*ztab == NULL) - return 0; - - tab = *ztab; - - for (code = 0; code <= tab->mask; code++) - if (tab->table[code].nexttable != NULL) - zlib_freetable(&tab->table[code].nexttable); - - sfree(tab->table); - tab->table = NULL; - - sfree(tab); - *ztab = NULL; - - return (0); -} - -struct zlib_decompress_ctx { - struct zlib_table *staticlentable, *staticdisttable; - struct zlib_table *currlentable, *currdisttable, *lenlentable; - enum { - START, OUTSIDEBLK, - TREES_HDR, TREES_LENLEN, TREES_LEN, TREES_LENREP, - INBLK, GOTLENSYM, GOTLEN, GOTDISTSYM, - UNCOMP_LEN, UNCOMP_NLEN, UNCOMP_DATA - } state; - int sym, hlit, hdist, hclen, lenptr, lenextrabits, lenaddon, len, - lenrep; - int uncomplen; - unsigned char lenlen[19]; - unsigned char lengths[286 + 32]; - unsigned long bits; - int nbits; - unsigned char window[WINSIZE]; - int winpos; - unsigned char *outblk; - int outlen, outsize; -}; - -void *zlib_decompress_init(void) -{ - struct zlib_decompress_ctx *dctx = snew(struct zlib_decompress_ctx); - unsigned char lengths[288]; - - memset(lengths, 8, 144); - memset(lengths + 144, 9, 256 - 144); - memset(lengths + 256, 7, 280 - 256); - memset(lengths + 280, 8, 288 - 280); - dctx->staticlentable = zlib_mktable(lengths, 288); - memset(lengths, 5, 32); - dctx->staticdisttable = zlib_mktable(lengths, 32); - dctx->state = START; /* even before header */ - dctx->currlentable = dctx->currdisttable = dctx->lenlentable = NULL; - dctx->bits = 0; - dctx->nbits = 0; - dctx->winpos = 0; - - return dctx; -} - -void zlib_decompress_cleanup(void *handle) -{ - struct zlib_decompress_ctx *dctx = (struct zlib_decompress_ctx *)handle; - - if (dctx->currlentable && dctx->currlentable != dctx->staticlentable) - zlib_freetable(&dctx->currlentable); - if (dctx->currdisttable && dctx->currdisttable != dctx->staticdisttable) - zlib_freetable(&dctx->currdisttable); - if (dctx->lenlentable) - zlib_freetable(&dctx->lenlentable); - zlib_freetable(&dctx->staticlentable); - zlib_freetable(&dctx->staticdisttable); - sfree(dctx); -} - -static int zlib_huflookup(unsigned long *bitsp, int *nbitsp, - struct zlib_table *tab) -{ - unsigned long bits = *bitsp; - int nbits = *nbitsp; - while (1) { - struct zlib_tableentry *ent; - ent = &tab->table[bits & tab->mask]; - if (ent->nbits > nbits) - return -1; /* not enough data */ - bits >>= ent->nbits; - nbits -= ent->nbits; - if (ent->code == -1) - tab = ent->nexttable; - else { - *bitsp = bits; - *nbitsp = nbits; - return ent->code; - } - - if (!tab) { - /* - * There was a missing entry in the table, presumably - * due to an invalid Huffman table description, and the - * subsequent data has attempted to use the missing - * entry. Return a decoding failure. - */ - return -2; - } - } -} - -static void zlib_emit_char(struct zlib_decompress_ctx *dctx, int c) -{ - dctx->window[dctx->winpos] = c; - dctx->winpos = (dctx->winpos + 1) & (WINSIZE - 1); - if (dctx->outlen >= dctx->outsize) { - dctx->outsize = dctx->outlen + 512; - dctx->outblk = sresize(dctx->outblk, dctx->outsize, unsigned char); - } - dctx->outblk[dctx->outlen++] = c; -} - -#define EATBITS(n) ( dctx->nbits -= (n), dctx->bits >>= (n) ) - -int zlib_decompress_block(void *handle, unsigned char *block, int len, - unsigned char **outblock, int *outlen) -{ - struct zlib_decompress_ctx *dctx = (struct zlib_decompress_ctx *)handle; - const coderecord *rec; - int code, blktype, rep, dist, nlen, header; - static const unsigned char lenlenmap[] = { - 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 - }; - - dctx->outblk = snewn(256, unsigned char); - dctx->outsize = 256; - dctx->outlen = 0; - - while (len > 0 || dctx->nbits > 0) { - while (dctx->nbits < 24 && len > 0) { - dctx->bits |= (*block++) << dctx->nbits; - dctx->nbits += 8; - len--; - } - switch (dctx->state) { - case START: - /* Expect 16-bit zlib header. */ - if (dctx->nbits < 16) - goto finished; /* done all we can */ - - /* - * The header is stored as a big-endian 16-bit integer, - * in contrast to the general little-endian policy in - * the rest of the format :-( - */ - header = (((dctx->bits & 0xFF00) >> 8) | - ((dctx->bits & 0x00FF) << 8)); - EATBITS(16); - - /* - * Check the header: - * - * - bits 8-11 should be 1000 (Deflate/RFC1951) - * - bits 12-15 should be at most 0111 (window size) - * - bit 5 should be zero (no dictionary present) - * - we don't care about bits 6-7 (compression rate) - * - bits 0-4 should be set up to make the whole thing - * a multiple of 31 (checksum). - */ - if ((header & 0x0F00) != 0x0800 || - (header & 0xF000) > 0x7000 || - (header & 0x0020) != 0x0000 || - (header % 31) != 0) - goto decode_error; - - dctx->state = OUTSIDEBLK; - break; - case OUTSIDEBLK: - /* Expect 3-bit block header. */ - if (dctx->nbits < 3) - goto finished; /* done all we can */ - EATBITS(1); - blktype = dctx->bits & 3; - EATBITS(2); - if (blktype == 0) { - int to_eat = dctx->nbits & 7; - dctx->state = UNCOMP_LEN; - EATBITS(to_eat); /* align to byte boundary */ - } else if (blktype == 1) { - dctx->currlentable = dctx->staticlentable; - dctx->currdisttable = dctx->staticdisttable; - dctx->state = INBLK; - } else if (blktype == 2) { - dctx->state = TREES_HDR; - } - break; - case TREES_HDR: - /* - * Dynamic block header. Five bits of HLIT, five of - * HDIST, four of HCLEN. - */ - if (dctx->nbits < 5 + 5 + 4) - goto finished; /* done all we can */ - dctx->hlit = 257 + (dctx->bits & 31); - EATBITS(5); - dctx->hdist = 1 + (dctx->bits & 31); - EATBITS(5); - dctx->hclen = 4 + (dctx->bits & 15); - EATBITS(4); - dctx->lenptr = 0; - dctx->state = TREES_LENLEN; - memset(dctx->lenlen, 0, sizeof(dctx->lenlen)); - break; - case TREES_LENLEN: - if (dctx->nbits < 3) - goto finished; - while (dctx->lenptr < dctx->hclen && dctx->nbits >= 3) { - dctx->lenlen[lenlenmap[dctx->lenptr++]] = - (unsigned char) (dctx->bits & 7); - EATBITS(3); - } - if (dctx->lenptr == dctx->hclen) { - dctx->lenlentable = zlib_mktable(dctx->lenlen, 19); - dctx->state = TREES_LEN; - dctx->lenptr = 0; - } - break; - case TREES_LEN: - if (dctx->lenptr >= dctx->hlit + dctx->hdist) { - dctx->currlentable = zlib_mktable(dctx->lengths, dctx->hlit); - dctx->currdisttable = zlib_mktable(dctx->lengths + dctx->hlit, - dctx->hdist); - zlib_freetable(&dctx->lenlentable); - dctx->lenlentable = NULL; - dctx->state = INBLK; - break; - } - code = - zlib_huflookup(&dctx->bits, &dctx->nbits, dctx->lenlentable); - if (code == -1) - goto finished; - if (code == -2) - goto decode_error; - if (code < 16) - dctx->lengths[dctx->lenptr++] = code; - else { - dctx->lenextrabits = (code == 16 ? 2 : code == 17 ? 3 : 7); - dctx->lenaddon = (code == 18 ? 11 : 3); - dctx->lenrep = (code == 16 && dctx->lenptr > 0 ? - dctx->lengths[dctx->lenptr - 1] : 0); - dctx->state = TREES_LENREP; - } - break; - case TREES_LENREP: - if (dctx->nbits < dctx->lenextrabits) - goto finished; - rep = - dctx->lenaddon + - (dctx->bits & ((1 << dctx->lenextrabits) - 1)); - EATBITS(dctx->lenextrabits); - while (rep > 0 && dctx->lenptr < dctx->hlit + dctx->hdist) { - dctx->lengths[dctx->lenptr] = dctx->lenrep; - dctx->lenptr++; - rep--; - } - dctx->state = TREES_LEN; - break; - case INBLK: - code = - zlib_huflookup(&dctx->bits, &dctx->nbits, dctx->currlentable); - if (code == -1) - goto finished; - if (code == -2) - goto decode_error; - if (code < 256) - zlib_emit_char(dctx, code); - else if (code == 256) { - dctx->state = OUTSIDEBLK; - if (dctx->currlentable != dctx->staticlentable) { - zlib_freetable(&dctx->currlentable); - dctx->currlentable = NULL; - } - if (dctx->currdisttable != dctx->staticdisttable) { - zlib_freetable(&dctx->currdisttable); - dctx->currdisttable = NULL; - } - } else if (code < 286) { /* static tree can give >285; ignore */ - dctx->state = GOTLENSYM; - dctx->sym = code; - } - break; - case GOTLENSYM: - rec = &lencodes[dctx->sym - 257]; - if (dctx->nbits < rec->extrabits) - goto finished; - dctx->len = - rec->min + (dctx->bits & ((1 << rec->extrabits) - 1)); - EATBITS(rec->extrabits); - dctx->state = GOTLEN; - break; - case GOTLEN: - code = - zlib_huflookup(&dctx->bits, &dctx->nbits, - dctx->currdisttable); - if (code == -1) - goto finished; - if (code == -2) - goto decode_error; - dctx->state = GOTDISTSYM; - dctx->sym = code; - break; - case GOTDISTSYM: - rec = &distcodes[dctx->sym]; - if (dctx->nbits < rec->extrabits) - goto finished; - dist = rec->min + (dctx->bits & ((1 << rec->extrabits) - 1)); - EATBITS(rec->extrabits); - dctx->state = INBLK; - while (dctx->len--) - zlib_emit_char(dctx, dctx->window[(dctx->winpos - dist) & - (WINSIZE - 1)]); - break; - case UNCOMP_LEN: - /* - * Uncompressed block. We expect to see a 16-bit LEN. - */ - if (dctx->nbits < 16) - goto finished; - dctx->uncomplen = dctx->bits & 0xFFFF; - EATBITS(16); - dctx->state = UNCOMP_NLEN; - break; - case UNCOMP_NLEN: - /* - * Uncompressed block. We expect to see a 16-bit NLEN, - * which should be the one's complement of the previous - * LEN. - */ - if (dctx->nbits < 16) - goto finished; - nlen = dctx->bits & 0xFFFF; - EATBITS(16); - if (dctx->uncomplen == 0) - dctx->state = OUTSIDEBLK; /* block is empty */ - else - dctx->state = UNCOMP_DATA; - break; - case UNCOMP_DATA: - if (dctx->nbits < 8) - goto finished; - zlib_emit_char(dctx, dctx->bits & 0xFF); - EATBITS(8); - if (--dctx->uncomplen == 0) - dctx->state = OUTSIDEBLK; /* end of uncompressed block */ - break; - } - } - - finished: - *outblock = dctx->outblk; - *outlen = dctx->outlen; - return 1; - - decode_error: - sfree(dctx->outblk); - *outblock = dctx->outblk = NULL; - *outlen = 0; - return 0; -} - -#ifdef ZLIB_STANDALONE - -#include -#include - -int main(int argc, char **argv) -{ - unsigned char buf[16], *outbuf; - int ret, outlen; - void *handle; - int noheader = FALSE, opts = TRUE; - char *filename = NULL; - FILE *fp; - - while (--argc) { - char *p = *++argv; - - if (p[0] == '-' && opts) { - if (!strcmp(p, "-d")) - noheader = TRUE; - else if (!strcmp(p, "--")) - opts = FALSE; /* next thing is filename */ - else { - fprintf(stderr, "unknown command line option '%s'\n", p); - return 1; - } - } else if (!filename) { - filename = p; - } else { - fprintf(stderr, "can only handle one filename\n"); - return 1; - } - } - - handle = zlib_decompress_init(); - - if (noheader) { - /* - * Provide missing zlib header if -d was specified. - */ - zlib_decompress_block(handle, "\x78\x9C", 2, &outbuf, &outlen); - assert(outlen == 0); - } - - if (filename) - fp = fopen(filename, "rb"); - else - fp = stdin; - - if (!fp) { - assert(filename); - fprintf(stderr, "unable to open '%s'\n", filename); - return 1; - } - - while (1) { - ret = fread(buf, 1, sizeof(buf), fp); - if (ret <= 0) - break; - zlib_decompress_block(handle, buf, ret, &outbuf, &outlen); - if (outbuf) { - if (outlen) - fwrite(outbuf, 1, outlen, stdout); - sfree(outbuf); - } else { - fprintf(stderr, "decoding error\n"); - return 1; - } - } - - zlib_decompress_cleanup(handle); - - if (filename) - fclose(fp); - - return 0; -} - -#else - -const struct ssh_compress ssh_zlib = { - "zlib", - zlib_compress_init, - zlib_compress_cleanup, - zlib_compress_block, - zlib_decompress_init, - zlib_decompress_cleanup, - zlib_decompress_block, - zlib_disable_compression, - "zlib (RFC1950)" -}; - -#endif diff --git a/tools/plink/storage.h b/tools/plink/storage.h deleted file mode 100644 index 0e0a7c0bd..000000000 --- a/tools/plink/storage.h +++ /dev/null @@ -1,115 +0,0 @@ -/* - * storage.h: interface defining functions for storage and recovery - * of PuTTY's persistent data. - */ - -#ifndef PUTTY_STORAGE_H -#define PUTTY_STORAGE_H - -/* ---------------------------------------------------------------------- - * Functions to save and restore PuTTY sessions. Note that this is - * only the low-level code to do the reading and writing. The - * higher-level code that translates a Config structure into a set - * of (key,value) pairs is elsewhere, since it doesn't (mostly) - * change between platforms. - */ - -/* - * Write a saved session. The caller is expected to call - * open_setting_w() to get a `void *' handle, then pass that to a - * number of calls to write_setting_s() and write_setting_i(), and - * then close it using close_settings_w(). At the end of this call - * sequence the settings should have been written to the PuTTY - * persistent storage area. - * - * A given key will be written at most once while saving a session. - * Keys may be up to 255 characters long. String values have no length - * limit. - * - * Any returned error message must be freed after use. - */ -void *open_settings_w(const char *sessionname, char **errmsg); -void write_setting_s(void *handle, const char *key, const char *value); -void write_setting_i(void *handle, const char *key, int value); -void write_setting_filename(void *handle, const char *key, Filename value); -void write_setting_fontspec(void *handle, const char *key, FontSpec font); -void close_settings_w(void *handle); - -/* - * Read a saved session. The caller is expected to call - * open_setting_r() to get a `void *' handle, then pass that to a - * number of calls to read_setting_s() and read_setting_i(), and - * then close it using close_settings_r(). - * - * read_setting_s() writes into the provided buffer and returns a - * pointer to the same buffer. - * - * If a particular string setting is not present in the session, - * read_setting_s() can return NULL, in which case the caller - * should invent a sensible default. If an integer setting is not - * present, read_setting_i() returns its provided default. - * - * read_setting_filename() and read_setting_fontspec() each read into - * the provided buffer, and return zero if they failed to. - */ -void *open_settings_r(const char *sessionname); -char *read_setting_s(void *handle, const char *key, char *buffer, int buflen); -int read_setting_i(void *handle, const char *key, int defvalue); -int read_setting_filename(void *handle, const char *key, Filename *value); -int read_setting_fontspec(void *handle, const char *key, FontSpec *font); -void close_settings_r(void *handle); - -/* - * Delete a whole saved session. - */ -void del_settings(const char *sessionname); - -/* - * Enumerate all saved sessions. - */ -void *enum_settings_start(void); -char *enum_settings_next(void *handle, char *buffer, int buflen); -void enum_settings_finish(void *handle); - -/* ---------------------------------------------------------------------- - * Functions to access PuTTY's host key database. - */ - -/* - * See if a host key matches the database entry. Return values can - * be 0 (entry matches database), 1 (entry is absent in database), - * or 2 (entry exists in database and is different). - */ -int verify_host_key(const char *hostname, int port, - const char *keytype, const char *key); - -/* - * Write a host key into the database, overwriting any previous - * entry that might have been there. - */ -void store_host_key(const char *hostname, int port, - const char *keytype, const char *key); - -/* ---------------------------------------------------------------------- - * Functions to access PuTTY's random number seed file. - */ - -typedef void (*noise_consumer_t) (void *data, int len); - -/* - * Read PuTTY's random seed file and pass its contents to a noise - * consumer function. - */ -void read_random_seed(noise_consumer_t consumer); - -/* - * Write PuTTY's random seed file from a given chunk of noise. - */ -void write_random_seed(void *data, int len); - -/* ---------------------------------------------------------------------- - * Cleanup function: remove all of PuTTY's persistent state. - */ -void cleanup_all(void); - -#endif diff --git a/tools/plink/telnet.c b/tools/plink/telnet.c deleted file mode 100644 index 8fbe88679..000000000 --- a/tools/plink/telnet.c +++ /dev/null @@ -1,1091 +0,0 @@ -/* - * Telnet backend. - */ - -#include -#include - -#include "putty.h" - -#ifndef FALSE -#define FALSE 0 -#endif -#ifndef TRUE -#define TRUE 1 -#endif - -#define IAC 255 /* interpret as command: */ -#define DONT 254 /* you are not to use option */ -#define DO 253 /* please, you use option */ -#define WONT 252 /* I won't use option */ -#define WILL 251 /* I will use option */ -#define SB 250 /* interpret as subnegotiation */ -#define SE 240 /* end sub negotiation */ - -#define GA 249 /* you may reverse the line */ -#define EL 248 /* erase the current line */ -#define EC 247 /* erase the current character */ -#define AYT 246 /* are you there */ -#define AO 245 /* abort output--but let prog finish */ -#define IP 244 /* interrupt process--permanently */ -#define BREAK 243 /* break */ -#define DM 242 /* data mark--for connect. cleaning */ -#define NOP 241 /* nop */ -#define EOR 239 /* end of record (transparent mode) */ -#define ABORT 238 /* Abort process */ -#define SUSP 237 /* Suspend process */ -#define xEOF 236 /* End of file: EOF is already used... */ - -#define TELOPTS(X) \ - X(BINARY, 0) /* 8-bit data path */ \ - X(ECHO, 1) /* echo */ \ - X(RCP, 2) /* prepare to reconnect */ \ - X(SGA, 3) /* suppress go ahead */ \ - X(NAMS, 4) /* approximate message size */ \ - X(STATUS, 5) /* give status */ \ - X(TM, 6) /* timing mark */ \ - X(RCTE, 7) /* remote controlled transmission and echo */ \ - X(NAOL, 8) /* negotiate about output line width */ \ - X(NAOP, 9) /* negotiate about output page size */ \ - X(NAOCRD, 10) /* negotiate about CR disposition */ \ - X(NAOHTS, 11) /* negotiate about horizontal tabstops */ \ - X(NAOHTD, 12) /* negotiate about horizontal tab disposition */ \ - X(NAOFFD, 13) /* negotiate about formfeed disposition */ \ - X(NAOVTS, 14) /* negotiate about vertical tab stops */ \ - X(NAOVTD, 15) /* negotiate about vertical tab disposition */ \ - X(NAOLFD, 16) /* negotiate about output LF disposition */ \ - X(XASCII, 17) /* extended ascic character set */ \ - X(LOGOUT, 18) /* force logout */ \ - X(BM, 19) /* byte macro */ \ - X(DET, 20) /* data entry terminal */ \ - X(SUPDUP, 21) /* supdup protocol */ \ - X(SUPDUPOUTPUT, 22) /* supdup output */ \ - X(SNDLOC, 23) /* send location */ \ - X(TTYPE, 24) /* terminal type */ \ - X(EOR, 25) /* end or record */ \ - X(TUID, 26) /* TACACS user identification */ \ - X(OUTMRK, 27) /* output marking */ \ - X(TTYLOC, 28) /* terminal location number */ \ - X(3270REGIME, 29) /* 3270 regime */ \ - X(X3PAD, 30) /* X.3 PAD */ \ - X(NAWS, 31) /* window size */ \ - X(TSPEED, 32) /* terminal speed */ \ - X(LFLOW, 33) /* remote flow control */ \ - X(LINEMODE, 34) /* Linemode option */ \ - X(XDISPLOC, 35) /* X Display Location */ \ - X(OLD_ENVIRON, 36) /* Old - Environment variables */ \ - X(AUTHENTICATION, 37) /* Authenticate */ \ - X(ENCRYPT, 38) /* Encryption option */ \ - X(NEW_ENVIRON, 39) /* New - Environment variables */ \ - X(TN3270E, 40) /* TN3270 enhancements */ \ - X(XAUTH, 41) \ - X(CHARSET, 42) /* Character set */ \ - X(RSP, 43) /* Remote serial port */ \ - X(COM_PORT_OPTION, 44) /* Com port control */ \ - X(SLE, 45) /* Suppress local echo */ \ - X(STARTTLS, 46) /* Start TLS */ \ - X(KERMIT, 47) /* Automatic Kermit file transfer */ \ - X(SEND_URL, 48) \ - X(FORWARD_X, 49) \ - X(PRAGMA_LOGON, 138) \ - X(SSPI_LOGON, 139) \ - X(PRAGMA_HEARTBEAT, 140) \ - X(EXOPL, 255) /* extended-options-list */ - -#define telnet_enum(x,y) TELOPT_##x = y, -enum { TELOPTS(telnet_enum) dummy=0 }; -#undef telnet_enum - -#define TELQUAL_IS 0 /* option is... */ -#define TELQUAL_SEND 1 /* send option */ -#define TELQUAL_INFO 2 /* ENVIRON: informational version of IS */ -#define BSD_VAR 1 -#define BSD_VALUE 0 -#define RFC_VAR 0 -#define RFC_VALUE 1 - -#define CR 13 -#define LF 10 -#define NUL 0 - -#define iswritable(x) \ - ( (x) != IAC && \ - (telnet->opt_states[o_we_bin.index] == ACTIVE || (x) != CR)) - -static char *telopt(int opt) -{ -#define telnet_str(x,y) case TELOPT_##x: return #x; - switch (opt) { - TELOPTS(telnet_str) - default: - return ""; - } -#undef telnet_str -} - -static void telnet_size(void *handle, int width, int height); - -struct Opt { - int send; /* what we initially send */ - int nsend; /* -ve send if requested to stop it */ - int ack, nak; /* +ve and -ve acknowledgements */ - int option; /* the option code */ - int index; /* index into telnet->opt_states[] */ - enum { - REQUESTED, ACTIVE, INACTIVE, REALLY_INACTIVE - } initial_state; -}; - -enum { - OPTINDEX_NAWS, - OPTINDEX_TSPEED, - OPTINDEX_TTYPE, - OPTINDEX_OENV, - OPTINDEX_NENV, - OPTINDEX_ECHO, - OPTINDEX_WE_SGA, - OPTINDEX_THEY_SGA, - OPTINDEX_WE_BIN, - OPTINDEX_THEY_BIN, - NUM_OPTS -}; - -static const struct Opt o_naws = - { WILL, WONT, DO, DONT, TELOPT_NAWS, OPTINDEX_NAWS, REQUESTED }; -static const struct Opt o_tspeed = - { WILL, WONT, DO, DONT, TELOPT_TSPEED, OPTINDEX_TSPEED, REQUESTED }; -static const struct Opt o_ttype = - { WILL, WONT, DO, DONT, TELOPT_TTYPE, OPTINDEX_TTYPE, REQUESTED }; -static const struct Opt o_oenv = - { WILL, WONT, DO, DONT, TELOPT_OLD_ENVIRON, OPTINDEX_OENV, INACTIVE }; -static const struct Opt o_nenv = - { WILL, WONT, DO, DONT, TELOPT_NEW_ENVIRON, OPTINDEX_NENV, REQUESTED }; -static const struct Opt o_echo = - { DO, DONT, WILL, WONT, TELOPT_ECHO, OPTINDEX_ECHO, REQUESTED }; -static const struct Opt o_we_sga = - { WILL, WONT, DO, DONT, TELOPT_SGA, OPTINDEX_WE_SGA, REQUESTED }; -static const struct Opt o_they_sga = - { DO, DONT, WILL, WONT, TELOPT_SGA, OPTINDEX_THEY_SGA, REQUESTED }; -static const struct Opt o_we_bin = - { WILL, WONT, DO, DONT, TELOPT_BINARY, OPTINDEX_WE_BIN, INACTIVE }; -static const struct Opt o_they_bin = - { DO, DONT, WILL, WONT, TELOPT_BINARY, OPTINDEX_THEY_BIN, INACTIVE }; - -static const struct Opt *const opts[] = { - &o_naws, &o_tspeed, &o_ttype, &o_oenv, &o_nenv, &o_echo, - &o_we_sga, &o_they_sga, &o_we_bin, &o_they_bin, NULL -}; - -typedef struct telnet_tag { - const struct plug_function_table *fn; - /* the above field _must_ be first in the structure */ - - Socket s; - - void *frontend; - void *ldisc; - int term_width, term_height; - - int opt_states[NUM_OPTS]; - - int echoing, editing; - int activated; - int bufsize; - int in_synch; - int sb_opt, sb_len; - unsigned char *sb_buf; - int sb_size; - - enum { - TOP_LEVEL, SEENIAC, SEENWILL, SEENWONT, SEENDO, SEENDONT, - SEENSB, SUBNEGOT, SUBNEG_IAC, SEENCR - } state; - - Config cfg; - - Pinger pinger; -} *Telnet; - -#define TELNET_MAX_BACKLOG 4096 - -#define SB_DELTA 1024 - -static void c_write(Telnet telnet, char *buf, int len) -{ - int backlog; - backlog = from_backend(telnet->frontend, 0, buf, len); - sk_set_frozen(telnet->s, backlog > TELNET_MAX_BACKLOG); -} - -static void log_option(Telnet telnet, char *sender, int cmd, int option) -{ - char *buf; - /* - * The strange-looking "" below is there to avoid a - * trigraph - a double question mark followed by > maps to a - * closing brace character! - */ - buf = dupprintf("%s:\t%s %s", sender, - (cmd == WILL ? "WILL" : cmd == WONT ? "WONT" : - cmd == DO ? "DO" : cmd == DONT ? "DONT" : ""), - telopt(option)); - logevent(telnet->frontend, buf); - sfree(buf); -} - -static void send_opt(Telnet telnet, int cmd, int option) -{ - unsigned char b[3]; - - b[0] = IAC; - b[1] = cmd; - b[2] = option; - telnet->bufsize = sk_write(telnet->s, (char *)b, 3); - log_option(telnet, "client", cmd, option); -} - -static void deactivate_option(Telnet telnet, const struct Opt *o) -{ - if (telnet->opt_states[o->index] == REQUESTED || - telnet->opt_states[o->index] == ACTIVE) - send_opt(telnet, o->nsend, o->option); - telnet->opt_states[o->index] = REALLY_INACTIVE; -} - -/* - * Generate side effects of enabling or disabling an option. - */ -static void option_side_effects(Telnet telnet, const struct Opt *o, int enabled) -{ - if (o->option == TELOPT_ECHO && o->send == DO) - telnet->echoing = !enabled; - else if (o->option == TELOPT_SGA && o->send == DO) - telnet->editing = !enabled; - if (telnet->ldisc) /* cause ldisc to notice the change */ - ldisc_send(telnet->ldisc, NULL, 0, 0); - - /* Ensure we get the minimum options */ - if (!telnet->activated) { - if (telnet->opt_states[o_echo.index] == INACTIVE) { - telnet->opt_states[o_echo.index] = REQUESTED; - send_opt(telnet, o_echo.send, o_echo.option); - } - if (telnet->opt_states[o_we_sga.index] == INACTIVE) { - telnet->opt_states[o_we_sga.index] = REQUESTED; - send_opt(telnet, o_we_sga.send, o_we_sga.option); - } - if (telnet->opt_states[o_they_sga.index] == INACTIVE) { - telnet->opt_states[o_they_sga.index] = REQUESTED; - send_opt(telnet, o_they_sga.send, o_they_sga.option); - } - telnet->activated = TRUE; - } -} - -static void activate_option(Telnet telnet, const struct Opt *o) -{ - if (o->send == WILL && o->option == TELOPT_NAWS) - telnet_size(telnet, telnet->term_width, telnet->term_height); - if (o->send == WILL && - (o->option == TELOPT_NEW_ENVIRON || - o->option == TELOPT_OLD_ENVIRON)) { - /* - * We may only have one kind of ENVIRON going at a time. - * This is a hack, but who cares. - */ - deactivate_option(telnet, o->option == - TELOPT_NEW_ENVIRON ? &o_oenv : &o_nenv); - } - option_side_effects(telnet, o, 1); -} - -static void refused_option(Telnet telnet, const struct Opt *o) -{ - if (o->send == WILL && o->option == TELOPT_NEW_ENVIRON && - telnet->opt_states[o_oenv.index] == INACTIVE) { - send_opt(telnet, WILL, TELOPT_OLD_ENVIRON); - telnet->opt_states[o_oenv.index] = REQUESTED; - } - option_side_effects(telnet, o, 0); -} - -static void proc_rec_opt(Telnet telnet, int cmd, int option) -{ - const struct Opt *const *o; - - log_option(telnet, "server", cmd, option); - for (o = opts; *o; o++) { - if ((*o)->option == option && (*o)->ack == cmd) { - switch (telnet->opt_states[(*o)->index]) { - case REQUESTED: - telnet->opt_states[(*o)->index] = ACTIVE; - activate_option(telnet, *o); - break; - case ACTIVE: - break; - case INACTIVE: - telnet->opt_states[(*o)->index] = ACTIVE; - send_opt(telnet, (*o)->send, option); - activate_option(telnet, *o); - break; - case REALLY_INACTIVE: - send_opt(telnet, (*o)->nsend, option); - break; - } - return; - } else if ((*o)->option == option && (*o)->nak == cmd) { - switch (telnet->opt_states[(*o)->index]) { - case REQUESTED: - telnet->opt_states[(*o)->index] = INACTIVE; - refused_option(telnet, *o); - break; - case ACTIVE: - telnet->opt_states[(*o)->index] = INACTIVE; - send_opt(telnet, (*o)->nsend, option); - option_side_effects(telnet, *o, 0); - break; - case INACTIVE: - case REALLY_INACTIVE: - break; - } - return; - } - } - /* - * If we reach here, the option was one we weren't prepared to - * cope with. If the request was positive (WILL or DO), we send - * a negative ack to indicate refusal. If the request was - * negative (WONT / DONT), we must do nothing. - */ - if (cmd == WILL || cmd == DO) - send_opt(telnet, (cmd == WILL ? DONT : WONT), option); -} - -static void process_subneg(Telnet telnet) -{ - unsigned char b[2048], *p, *q; - int var, value, n; - char *e; - - switch (telnet->sb_opt) { - case TELOPT_TSPEED: - if (telnet->sb_len == 1 && telnet->sb_buf[0] == TELQUAL_SEND) { - char *logbuf; - b[0] = IAC; - b[1] = SB; - b[2] = TELOPT_TSPEED; - b[3] = TELQUAL_IS; - strcpy((char *)(b + 4), telnet->cfg.termspeed); - n = 4 + strlen(telnet->cfg.termspeed); - b[n] = IAC; - b[n + 1] = SE; - telnet->bufsize = sk_write(telnet->s, (char *)b, n + 2); - logevent(telnet->frontend, "server:\tSB TSPEED SEND"); - logbuf = dupprintf("client:\tSB TSPEED IS %s", telnet->cfg.termspeed); - logevent(telnet->frontend, logbuf); - sfree(logbuf); - } else - logevent(telnet->frontend, "server:\tSB TSPEED "); - break; - case TELOPT_TTYPE: - if (telnet->sb_len == 1 && telnet->sb_buf[0] == TELQUAL_SEND) { - char *logbuf; - b[0] = IAC; - b[1] = SB; - b[2] = TELOPT_TTYPE; - b[3] = TELQUAL_IS; - for (n = 0; telnet->cfg.termtype[n]; n++) - b[n + 4] = (telnet->cfg.termtype[n] >= 'a' - && telnet->cfg.termtype[n] <= - 'z' ? telnet->cfg.termtype[n] + 'A' - - 'a' : telnet->cfg.termtype[n]); - b[n + 4] = IAC; - b[n + 5] = SE; - telnet->bufsize = sk_write(telnet->s, (char *)b, n + 6); - b[n + 4] = 0; - logevent(telnet->frontend, "server:\tSB TTYPE SEND"); - logbuf = dupprintf("client:\tSB TTYPE IS %s", b + 4); - logevent(telnet->frontend, logbuf); - sfree(logbuf); - } else - logevent(telnet->frontend, "server:\tSB TTYPE \r\n"); - break; - case TELOPT_OLD_ENVIRON: - case TELOPT_NEW_ENVIRON: - p = telnet->sb_buf; - q = p + telnet->sb_len; - if (p < q && *p == TELQUAL_SEND) { - char *logbuf; - p++; - logbuf = dupprintf("server:\tSB %s SEND", telopt(telnet->sb_opt)); - logevent(telnet->frontend, logbuf); - sfree(logbuf); - if (telnet->sb_opt == TELOPT_OLD_ENVIRON) { - if (telnet->cfg.rfc_environ) { - value = RFC_VALUE; - var = RFC_VAR; - } else { - value = BSD_VALUE; - var = BSD_VAR; - } - /* - * Try to guess the sense of VAR and VALUE. - */ - while (p < q) { - if (*p == RFC_VAR) { - value = RFC_VALUE; - var = RFC_VAR; - } else if (*p == BSD_VAR) { - value = BSD_VALUE; - var = BSD_VAR; - } - p++; - } - } else { - /* - * With NEW_ENVIRON, the sense of VAR and VALUE - * isn't in doubt. - */ - value = RFC_VALUE; - var = RFC_VAR; - } - b[0] = IAC; - b[1] = SB; - b[2] = telnet->sb_opt; - b[3] = TELQUAL_IS; - n = 4; - e = telnet->cfg.environmt; - while (*e) { - b[n++] = var; - while (*e && *e != '\t') - b[n++] = *e++; - if (*e == '\t') - e++; - b[n++] = value; - while (*e) - b[n++] = *e++; - e++; - } - { - char user[sizeof(telnet->cfg.username)]; - (void) get_remote_username(&telnet->cfg, user, sizeof(user)); - if (*user) { - b[n++] = var; - b[n++] = 'U'; - b[n++] = 'S'; - b[n++] = 'E'; - b[n++] = 'R'; - b[n++] = value; - e = user; - while (*e) - b[n++] = *e++; - } - b[n++] = IAC; - b[n++] = SE; - telnet->bufsize = sk_write(telnet->s, (char *)b, n); - logbuf = dupprintf("client:\tSB %s IS %s%s%s%s", - telopt(telnet->sb_opt), - *user ? "USER=" : "", - user, - *user ? " " : "", - n == 6 ? "" : - (*telnet->cfg.environmt ? "" : "")); - logevent(telnet->frontend, logbuf); - sfree(logbuf); - } - } - break; - } -} - -static void do_telnet_read(Telnet telnet, char *buf, int len) -{ - char *outbuf = NULL; - int outbuflen = 0, outbufsize = 0; - -#define ADDTOBUF(c) do { \ - if (outbuflen >= outbufsize) { \ - outbufsize = outbuflen + 256; \ - outbuf = sresize(outbuf, outbufsize, char); \ - } \ - outbuf[outbuflen++] = (c); \ -} while (0) - - while (len--) { - int c = (unsigned char) *buf++; - - switch (telnet->state) { - case TOP_LEVEL: - case SEENCR: - if (c == NUL && telnet->state == SEENCR) - telnet->state = TOP_LEVEL; - else if (c == IAC) - telnet->state = SEENIAC; - else { - if (!telnet->in_synch) - ADDTOBUF(c); - -#if 1 - /* I can't get the F***ing winsock to insert the urgent IAC - * into the right position! Even with SO_OOBINLINE it gives - * it to recv too soon. And of course the DM byte (that - * arrives in the same packet!) appears several K later!! - * - * Oh well, we do get the DM in the right place so I'll - * just stop hiding on the next 0xf2 and hope for the best. - */ - else if (c == DM) - telnet->in_synch = 0; -#endif - if (c == CR && telnet->opt_states[o_they_bin.index] != ACTIVE) - telnet->state = SEENCR; - else - telnet->state = TOP_LEVEL; - } - break; - case SEENIAC: - if (c == DO) - telnet->state = SEENDO; - else if (c == DONT) - telnet->state = SEENDONT; - else if (c == WILL) - telnet->state = SEENWILL; - else if (c == WONT) - telnet->state = SEENWONT; - else if (c == SB) - telnet->state = SEENSB; - else if (c == DM) { - telnet->in_synch = 0; - telnet->state = TOP_LEVEL; - } else { - /* ignore everything else; print it if it's IAC */ - if (c == IAC) { - ADDTOBUF(c); - } - telnet->state = TOP_LEVEL; - } - break; - case SEENWILL: - proc_rec_opt(telnet, WILL, c); - telnet->state = TOP_LEVEL; - break; - case SEENWONT: - proc_rec_opt(telnet, WONT, c); - telnet->state = TOP_LEVEL; - break; - case SEENDO: - proc_rec_opt(telnet, DO, c); - telnet->state = TOP_LEVEL; - break; - case SEENDONT: - proc_rec_opt(telnet, DONT, c); - telnet->state = TOP_LEVEL; - break; - case SEENSB: - telnet->sb_opt = c; - telnet->sb_len = 0; - telnet->state = SUBNEGOT; - break; - case SUBNEGOT: - if (c == IAC) - telnet->state = SUBNEG_IAC; - else { - subneg_addchar: - if (telnet->sb_len >= telnet->sb_size) { - telnet->sb_size += SB_DELTA; - telnet->sb_buf = sresize(telnet->sb_buf, telnet->sb_size, - unsigned char); - } - telnet->sb_buf[telnet->sb_len++] = c; - telnet->state = SUBNEGOT; /* in case we came here by goto */ - } - break; - case SUBNEG_IAC: - if (c != SE) - goto subneg_addchar; /* yes, it's a hack, I know, but... */ - else { - process_subneg(telnet); - telnet->state = TOP_LEVEL; - } - break; - } - } - - if (outbuflen) - c_write(telnet, outbuf, outbuflen); - sfree(outbuf); -} - -static void telnet_log(Plug plug, int type, SockAddr addr, int port, - const char *error_msg, int error_code) -{ - Telnet telnet = (Telnet) plug; - char addrbuf[256], *msg; - - sk_getaddr(addr, addrbuf, lenof(addrbuf)); - - if (type == 0) - msg = dupprintf("Connecting to %s port %d", addrbuf, port); - else - msg = dupprintf("Failed to connect to %s: %s", addrbuf, error_msg); - - logevent(telnet->frontend, msg); -} - -static int telnet_closing(Plug plug, const char *error_msg, int error_code, - int calling_back) -{ - Telnet telnet = (Telnet) plug; - - if (telnet->s) { - sk_close(telnet->s); - telnet->s = NULL; - notify_remote_exit(telnet->frontend); - } - if (error_msg) { - logevent(telnet->frontend, error_msg); - connection_fatal(telnet->frontend, "%s", error_msg); - } - /* Otherwise, the remote side closed the connection normally. */ - return 0; -} - -static int telnet_receive(Plug plug, int urgent, char *data, int len) -{ - Telnet telnet = (Telnet) plug; - if (urgent) - telnet->in_synch = TRUE; - do_telnet_read(telnet, data, len); - return 1; -} - -static void telnet_sent(Plug plug, int bufsize) -{ - Telnet telnet = (Telnet) plug; - telnet->bufsize = bufsize; -} - -/* - * Called to set up the Telnet connection. - * - * Returns an error message, or NULL on success. - * - * Also places the canonical host name into `realhost'. It must be - * freed by the caller. - */ -static const char *telnet_init(void *frontend_handle, void **backend_handle, - Config *cfg, - char *host, int port, char **realhost, - int nodelay, int keepalive) -{ - static const struct plug_function_table fn_table = { - telnet_log, - telnet_closing, - telnet_receive, - telnet_sent - }; - SockAddr addr; - const char *err; - Telnet telnet; - - telnet = snew(struct telnet_tag); - telnet->fn = &fn_table; - telnet->cfg = *cfg; /* STRUCTURE COPY */ - telnet->s = NULL; - telnet->echoing = TRUE; - telnet->editing = TRUE; - telnet->activated = FALSE; - telnet->sb_buf = NULL; - telnet->sb_size = 0; - telnet->frontend = frontend_handle; - telnet->term_width = telnet->cfg.width; - telnet->term_height = telnet->cfg.height; - telnet->state = TOP_LEVEL; - telnet->ldisc = NULL; - telnet->pinger = NULL; - *backend_handle = telnet; - - /* - * Try to find host. - */ - { - char *buf; - buf = dupprintf("Looking up host \"%s\"%s", host, - (cfg->addressfamily == ADDRTYPE_IPV4 ? " (IPv4)" : - (cfg->addressfamily == ADDRTYPE_IPV6 ? " (IPv6)" : - ""))); - logevent(telnet->frontend, buf); - sfree(buf); - } - addr = name_lookup(host, port, realhost, &telnet->cfg, cfg->addressfamily); - if ((err = sk_addr_error(addr)) != NULL) { - sk_addr_free(addr); - return err; - } - - if (port < 0) - port = 23; /* default telnet port */ - - /* - * Open socket. - */ - telnet->s = new_connection(addr, *realhost, port, 0, 1, - nodelay, keepalive, (Plug) telnet, &telnet->cfg); - if ((err = sk_socket_error(telnet->s)) != NULL) - return err; - - telnet->pinger = pinger_new(&telnet->cfg, &telnet_backend, telnet); - - /* - * Initialise option states. - */ - if (telnet->cfg.passive_telnet) { - const struct Opt *const *o; - - for (o = opts; *o; o++) - telnet->opt_states[(*o)->index] = INACTIVE; - } else { - const struct Opt *const *o; - - for (o = opts; *o; o++) { - telnet->opt_states[(*o)->index] = (*o)->initial_state; - if (telnet->opt_states[(*o)->index] == REQUESTED) - send_opt(telnet, (*o)->send, (*o)->option); - } - telnet->activated = TRUE; - } - - /* - * Set up SYNCH state. - */ - telnet->in_synch = FALSE; - - /* - * We can send special commands from the start. - */ - update_specials_menu(telnet->frontend); - - /* - * loghost overrides realhost, if specified. - */ - if (*telnet->cfg.loghost) { - char *colon; - - sfree(*realhost); - *realhost = dupstr(telnet->cfg.loghost); - colon = strrchr(*realhost, ':'); - if (colon) { - /* - * FIXME: if we ever update this aspect of ssh.c for - * IPv6 literal management, this should change in line - * with it. - */ - *colon++ = '\0'; - } - } - - return NULL; -} - -static void telnet_free(void *handle) -{ - Telnet telnet = (Telnet) handle; - - sfree(telnet->sb_buf); - if (telnet->s) - sk_close(telnet->s); - if (telnet->pinger) - pinger_free(telnet->pinger); - sfree(telnet); -} -/* - * Reconfigure the Telnet backend. There's no immediate action - * necessary, in this backend: we just save the fresh config for - * any subsequent negotiations. - */ -static void telnet_reconfig(void *handle, Config *cfg) -{ - Telnet telnet = (Telnet) handle; - pinger_reconfig(telnet->pinger, &telnet->cfg, cfg); - telnet->cfg = *cfg; /* STRUCTURE COPY */ -} - -/* - * Called to send data down the Telnet connection. - */ -static int telnet_send(void *handle, char *buf, int len) -{ - Telnet telnet = (Telnet) handle; - unsigned char *p, *end; - static const unsigned char iac[2] = { IAC, IAC }; - static const unsigned char cr[2] = { CR, NUL }; -#if 0 - static const unsigned char nl[2] = { CR, LF }; -#endif - - if (telnet->s == NULL) - return 0; - - p = (unsigned char *)buf; - end = (unsigned char *)(buf + len); - while (p < end) { - unsigned char *q = p; - - while (p < end && iswritable(*p)) - p++; - telnet->bufsize = sk_write(telnet->s, (char *)q, p - q); - - while (p < end && !iswritable(*p)) { - telnet->bufsize = - sk_write(telnet->s, (char *)(*p == IAC ? iac : cr), 2); - p++; - } - } - - return telnet->bufsize; -} - -/* - * Called to query the current socket sendability status. - */ -static int telnet_sendbuffer(void *handle) -{ - Telnet telnet = (Telnet) handle; - return telnet->bufsize; -} - -/* - * Called to set the size of the window from Telnet's POV. - */ -static void telnet_size(void *handle, int width, int height) -{ - Telnet telnet = (Telnet) handle; - unsigned char b[24]; - int n; - char *logbuf; - - telnet->term_width = width; - telnet->term_height = height; - - if (telnet->s == NULL || telnet->opt_states[o_naws.index] != ACTIVE) - return; - n = 0; - b[n++] = IAC; - b[n++] = SB; - b[n++] = TELOPT_NAWS; - b[n++] = telnet->term_width >> 8; - if (b[n-1] == IAC) b[n++] = IAC; /* duplicate any IAC byte occurs */ - b[n++] = telnet->term_width & 0xFF; - if (b[n-1] == IAC) b[n++] = IAC; /* duplicate any IAC byte occurs */ - b[n++] = telnet->term_height >> 8; - if (b[n-1] == IAC) b[n++] = IAC; /* duplicate any IAC byte occurs */ - b[n++] = telnet->term_height & 0xFF; - if (b[n-1] == IAC) b[n++] = IAC; /* duplicate any IAC byte occurs */ - b[n++] = IAC; - b[n++] = SE; - telnet->bufsize = sk_write(telnet->s, (char *)b, n); - logbuf = dupprintf("client:\tSB NAWS %d,%d", - telnet->term_width, telnet->term_height); - logevent(telnet->frontend, logbuf); - sfree(logbuf); -} - -/* - * Send Telnet special codes. - */ -static void telnet_special(void *handle, Telnet_Special code) -{ - Telnet telnet = (Telnet) handle; - unsigned char b[2]; - - if (telnet->s == NULL) - return; - - b[0] = IAC; - switch (code) { - case TS_AYT: - b[1] = AYT; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_BRK: - b[1] = BREAK; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_EC: - b[1] = EC; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_EL: - b[1] = EL; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_GA: - b[1] = GA; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_NOP: - b[1] = NOP; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_ABORT: - b[1] = ABORT; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_AO: - b[1] = AO; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_IP: - b[1] = IP; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_SUSP: - b[1] = SUSP; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_EOR: - b[1] = EOR; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_EOF: - b[1] = xEOF; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - break; - case TS_EOL: - /* In BINARY mode, CR-LF becomes just CR - - * and without the NUL suffix too. */ - if (telnet->opt_states[o_we_bin.index] == ACTIVE) - telnet->bufsize = sk_write(telnet->s, "\r", 1); - else - telnet->bufsize = sk_write(telnet->s, "\r\n", 2); - break; - case TS_SYNCH: - b[1] = DM; - telnet->bufsize = sk_write(telnet->s, (char *)b, 1); - telnet->bufsize = sk_write_oob(telnet->s, (char *)(b + 1), 1); - break; - case TS_RECHO: - if (telnet->opt_states[o_echo.index] == INACTIVE || - telnet->opt_states[o_echo.index] == REALLY_INACTIVE) { - telnet->opt_states[o_echo.index] = REQUESTED; - send_opt(telnet, o_echo.send, o_echo.option); - } - break; - case TS_LECHO: - if (telnet->opt_states[o_echo.index] == ACTIVE) { - telnet->opt_states[o_echo.index] = REQUESTED; - send_opt(telnet, o_echo.nsend, o_echo.option); - } - break; - case TS_PING: - if (telnet->opt_states[o_they_sga.index] == ACTIVE) { - b[1] = NOP; - telnet->bufsize = sk_write(telnet->s, (char *)b, 2); - } - break; - default: - break; /* never heard of it */ - } -} - -static const struct telnet_special *telnet_get_specials(void *handle) -{ - static const struct telnet_special specials[] = { - {"Are You There", TS_AYT}, - {"Break", TS_BRK}, - {"Synch", TS_SYNCH}, - {"Erase Character", TS_EC}, - {"Erase Line", TS_EL}, - {"Go Ahead", TS_GA}, - {"No Operation", TS_NOP}, - {NULL, TS_SEP}, - {"Abort Process", TS_ABORT}, - {"Abort Output", TS_AO}, - {"Interrupt Process", TS_IP}, - {"Suspend Process", TS_SUSP}, - {NULL, TS_SEP}, - {"End Of Record", TS_EOR}, - {"End Of File", TS_EOF}, - {NULL, TS_EXITMENU} - }; - return specials; -} - -static int telnet_connected(void *handle) -{ - Telnet telnet = (Telnet) handle; - return telnet->s != NULL; -} - -static int telnet_sendok(void *handle) -{ - /* Telnet telnet = (Telnet) handle; */ - return 1; -} - -static void telnet_unthrottle(void *handle, int backlog) -{ - Telnet telnet = (Telnet) handle; - sk_set_frozen(telnet->s, backlog > TELNET_MAX_BACKLOG); -} - -static int telnet_ldisc(void *handle, int option) -{ - Telnet telnet = (Telnet) handle; - if (option == LD_ECHO) - return telnet->echoing; - if (option == LD_EDIT) - return telnet->editing; - return FALSE; -} - -static void telnet_provide_ldisc(void *handle, void *ldisc) -{ - Telnet telnet = (Telnet) handle; - telnet->ldisc = ldisc; -} - -static void telnet_provide_logctx(void *handle, void *logctx) -{ - /* This is a stub. */ -} - -static int telnet_exitcode(void *handle) -{ - Telnet telnet = (Telnet) handle; - if (telnet->s != NULL) - return -1; /* still connected */ - else - /* Telnet doesn't transmit exit codes back to the client */ - return 0; -} - -/* - * cfg_info for Telnet does nothing at all. - */ -static int telnet_cfg_info(void *handle) -{ - return 0; -} - -Backend telnet_backend = { - telnet_init, - telnet_free, - telnet_reconfig, - telnet_send, - telnet_sendbuffer, - telnet_size, - telnet_special, - telnet_get_specials, - telnet_connected, - telnet_exitcode, - telnet_sendok, - telnet_ldisc, - telnet_provide_ldisc, - telnet_provide_logctx, - telnet_unthrottle, - telnet_cfg_info, - "telnet", - PROT_TELNET, - 23 -}; diff --git a/tools/plink/terminal.h b/tools/plink/terminal.h deleted file mode 100644 index 6d3b1c544..000000000 --- a/tools/plink/terminal.h +++ /dev/null @@ -1,280 +0,0 @@ -/* - * Internals of the Terminal structure, for those other modules - * which need to look inside it. It would be nice if this could be - * folded back into terminal.c in future, with an abstraction layer - * to handle everything that other modules need to know about it; - * but for the moment, this will do. - */ - -#ifndef PUTTY_TERMINAL_H -#define PUTTY_TERMINAL_H - -#include "tree234.h" - -struct beeptime { - struct beeptime *next; - unsigned long ticks; -}; - -typedef struct { - int y, x; -} pos; - -#ifdef OPTIMISE_SCROLL -struct scrollregion { - struct scrollregion *next; - int topline; /* Top line of scroll region. */ - int botline; /* Bottom line of scroll region. */ - int lines; /* Number of lines to scroll by - +ve is forwards. */ -}; -#endif /* OPTIMISE_SCROLL */ - -typedef struct termchar termchar; -typedef struct termline termline; - -struct termchar { - /* - * Any code in terminal.c which definitely needs to be changed - * when extra fields are added here is labelled with a comment - * saying FULL-TERMCHAR. - */ - unsigned long chr; - unsigned long attr; - - /* - * The cc_next field is used to link multiple termchars - * together into a list, so as to fit more than one character - * into a character cell (Unicode combining characters). - * - * cc_next is a relative offset into the current array of - * termchars. I.e. to advance to the next character in a list, - * one does `tc += tc->next'. - * - * Zero means end of list. - */ - int cc_next; -}; - -struct termline { - unsigned short lattr; - int cols; /* number of real columns on the line */ - int size; /* number of allocated termchars - * (cc-lists may make this > cols) */ - int temporary; /* TRUE if decompressed from scrollback */ - int cc_free; /* offset to first cc in free list */ - struct termchar *chars; -}; - -struct bidi_cache_entry { - int width; - struct termchar *chars; - int *forward, *backward; /* the permutations of line positions */ -}; - -struct terminal_tag { - - int compatibility_level; - - tree234 *scrollback; /* lines scrolled off top of screen */ - tree234 *screen; /* lines on primary screen */ - tree234 *alt_screen; /* lines on alternate screen */ - int disptop; /* distance scrolled back (0 or -ve) */ - int tempsblines; /* number of lines of .scrollback that - can be retrieved onto the terminal - ("temporary scrollback") */ - - termline **disptext; /* buffer of text on real screen */ - int dispcursx, dispcursy; /* location of cursor on real screen */ - int curstype; /* type of cursor on real screen */ - -#define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */ - - struct beeptime *beephead, *beeptail; - int nbeeps; - int beep_overloaded; - long lastbeep; - -#define TTYPE termchar -#define TSIZE (sizeof(TTYPE)) - -#ifdef OPTIMISE_SCROLL - struct scrollregion *scrollhead, *scrolltail; -#endif /* OPTIMISE_SCROLL */ - - int default_attr, curr_attr, save_attr; - termchar basic_erase_char, erase_char; - - bufchain inbuf; /* terminal input buffer */ - pos curs; /* cursor */ - pos savecurs; /* saved cursor position */ - int marg_t, marg_b; /* scroll margins */ - int dec_om; /* DEC origin mode flag */ - int wrap, wrapnext; /* wrap flags */ - int insert; /* insert-mode flag */ - int cset; /* 0 or 1: which char set */ - int save_cset, save_csattr; /* saved with cursor position */ - int save_utf, save_wnext; /* saved with cursor position */ - int rvideo; /* global reverse video flag */ - unsigned long rvbell_startpoint; /* for ESC[?5hESC[?5l vbell */ - int cursor_on; /* cursor enabled flag */ - int reset_132; /* Flag ESC c resets to 80 cols */ - int use_bce; /* Use Background coloured erase */ - int cblinker; /* When blinking is the cursor on ? */ - int tblinker; /* When the blinking text is on */ - int blink_is_real; /* Actually blink blinking text */ - int term_echoing; /* Does terminal want local echo? */ - int term_editing; /* Does terminal want local edit? */ - int sco_acs, save_sco_acs; /* CSI 10,11,12m -> OEM charset */ - int vt52_bold; /* Force bold on non-bold colours */ - int utf; /* Are we in toggleable UTF-8 mode? */ - int utf_state; /* Is there a pending UTF-8 character */ - int utf_char; /* and what is it so far. */ - int utf_size; /* The size of the UTF character. */ - int printing, only_printing; /* Are we doing ANSI printing? */ - int print_state; /* state of print-end-sequence scan */ - bufchain printer_buf; /* buffered data for printer */ - printer_job *print_job; - - /* ESC 7 saved state for the alternate screen */ - pos alt_savecurs; - int alt_save_attr; - int alt_save_cset, alt_save_csattr; - int alt_save_utf, alt_save_wnext; - int alt_save_sco_acs; - - int rows, cols, savelines; - int has_focus; - int in_vbell; - long vbell_end; - int app_cursor_keys, app_keypad_keys, vt52_mode; - int repeat_off, cr_lf_return; - int seen_disp_event; - int big_cursor; - - int xterm_mouse; /* send mouse messages to host */ - int mouse_is_down; /* used while tracking mouse buttons */ - - int cset_attr[2]; - -/* - * Saved settings on the alternate screen. - */ - int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins; - int alt_cset, alt_sco_acs, alt_utf; - int alt_t, alt_b; - int alt_which; - int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */ - -#define ARGS_MAX 32 /* max # of esc sequence arguments */ -#define ARG_DEFAULT 0 /* if an arg isn't specified */ -#define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) ) - int esc_args[ARGS_MAX]; - int esc_nargs; - int esc_query; -#define ANSI(x,y) ((x)+((y)<<8)) -#define ANSI_QUE(x) ANSI(x,TRUE) - -#define OSC_STR_MAX 2048 - int osc_strlen; - char osc_string[OSC_STR_MAX + 1]; - int osc_w; - - char id_string[1024]; - - unsigned char *tabs; - - enum { - TOPLEVEL, - SEEN_ESC, - SEEN_CSI, - SEEN_OSC, - SEEN_OSC_W, - - DO_CTRLS, - - SEEN_OSC_P, - OSC_STRING, OSC_MAYBE_ST, - VT52_ESC, - VT52_Y1, - VT52_Y2, - VT52_FG, - VT52_BG - } termstate; - - enum { - NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED - } selstate; - enum { - LEXICOGRAPHIC, RECTANGULAR - } seltype; - enum { - SM_CHAR, SM_WORD, SM_LINE - } selmode; - pos selstart, selend, selanchor; - - short wordness[256]; - - /* Mask of attributes to pay attention to when painting. */ - int attr_mask; - - wchar_t *paste_buffer; - int paste_len, paste_pos, paste_hold; - long last_paste; - - void (*resize_fn)(void *, int, int); - void *resize_ctx; - - void *ldisc; - - void *frontend; - - void *logctx; - - struct unicode_data *ucsdata; - - /* - * We maintain a full _copy_ of a Config structure here, not - * merely a pointer to it. That way, when we're passed a new - * one for reconfiguration, we can check the differences and - * adjust the _current_ setting of (e.g.) auto wrap mode rather - * than only the default. - */ - Config cfg; - - /* - * from_backend calls term_out, but it can also be called from - * the ldisc if the ldisc is called _within_ term_out. So we - * have to guard against re-entrancy - if from_backend is - * called recursively like this, it will simply add data to the - * end of the buffer term_out is in the process of working - * through. - */ - int in_term_out; - - /* - * We schedule a window update shortly after receiving terminal - * data. This tracks whether one is currently pending. - */ - int window_update_pending; - long next_update; - - /* - * Track pending blinks and tblinks. - */ - int tblink_pending, cblink_pending; - long next_tblink, next_cblink; - - /* - * These are buffers used by the bidi and Arabic shaping code. - */ - termchar *ltemp; - int ltemp_size; - bidi_char *wcFrom, *wcTo; - int wcFromTo_size; - struct bidi_cache_entry *pre_bidi_cache, *post_bidi_cache; - int bidi_cache_size; -}; - -#define in_utf(term) ((term)->utf || (term)->ucsdata->line_codepage==CP_UTF8) - -#endif diff --git a/tools/plink/time.c b/tools/plink/time.c deleted file mode 100644 index d873d44cc..000000000 --- a/tools/plink/time.c +++ /dev/null @@ -1,16 +0,0 @@ -/* - * Portable implementation of ltime() for any ISO-C platform where - * time_t behaves. (In practice, we've found that platforms such as - * Windows and Mac have needed their own specialised implementations.) - */ - -#include -#include - -struct tm ltime(void) -{ - time_t t; - time(&t); - assert (t != ((time_t)-1)); - return *localtime(&t); -} diff --git a/tools/plink/timing.c b/tools/plink/timing.c deleted file mode 100644 index 2b7b70cb9..000000000 --- a/tools/plink/timing.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * timing.c - * - * This module tracks any timers set up by schedule_timer(). It - * keeps all the currently active timers in a list; it informs the - * front end of when the next timer is due to go off if that - * changes; and, very importantly, it tracks the context pointers - * passed to schedule_timer(), so that if a context is freed all - * the timers associated with it can be immediately annulled. - */ - -#include -#include - -#include "putty.h" -#include "tree234.h" - -struct timer { - timer_fn_t fn; - void *ctx; - long now; -}; - -static tree234 *timers = NULL; -static tree234 *timer_contexts = NULL; -static long now = 0L; - -static int compare_timers(void *av, void *bv) -{ - struct timer *a = (struct timer *)av; - struct timer *b = (struct timer *)bv; - long at = a->now - now; - long bt = b->now - now; - - if (at < bt) - return -1; - else if (at > bt) - return +1; - - /* - * Failing that, compare on the other two fields, just so that - * we don't get unwanted equality. - */ -#ifdef __LCC__ - /* lcc won't let us compare function pointers. Legal, but annoying. */ - { - int c = memcmp(&a->fn, &b->fn, sizeof(a->fn)); - if (c < 0) - return -1; - else if (c > 0) - return +1; - } -#else - if (a->fn < b->fn) - return -1; - else if (a->fn > b->fn) - return +1; -#endif - - if (a->ctx < b->ctx) - return -1; - else if (a->ctx > b->ctx) - return +1; - - /* - * Failing _that_, the two entries genuinely are equal, and we - * never have a need to store them separately in the tree. - */ - return 0; -} - -static int compare_timer_contexts(void *av, void *bv) -{ - char *a = (char *)av; - char *b = (char *)bv; - if (a < b) - return -1; - else if (a > b) - return +1; - return 0; -} - -static void init_timers(void) -{ - if (!timers) { - timers = newtree234(compare_timers); - timer_contexts = newtree234(compare_timer_contexts); - now = GETTICKCOUNT(); - } -} - -long schedule_timer(int ticks, timer_fn_t fn, void *ctx) -{ - long when; - struct timer *t, *first; - - init_timers(); - - when = ticks + GETTICKCOUNT(); - - /* - * Just in case our various defences against timing skew fail - * us: if we try to schedule a timer that's already in the - * past, we instead schedule it for the immediate future. - */ - if (when - now <= 0) - when = now + 1; - - t = snew(struct timer); - t->fn = fn; - t->ctx = ctx; - t->now = when; - - if (t != add234(timers, t)) { - sfree(t); /* identical timer already exists */ - } else { - add234(timer_contexts, t->ctx);/* don't care if this fails */ - } - - first = (struct timer *)index234(timers, 0); - if (first == t) { - /* - * This timer is the very first on the list, so we must - * notify the front end. - */ - timer_change_notify(first->now); - } - - return when; -} - -/* - * Call to run any timers whose time has reached the present. - * Returns the time (in ticks) expected until the next timer after - * that triggers. - */ -int run_timers(long anow, long *next) -{ - struct timer *first; - - init_timers(); - -#ifdef TIMING_SYNC - /* - * In this ifdef I put some code which deals with the - * possibility that `anow' disagrees with GETTICKCOUNT by a - * significant margin. Our strategy for dealing with it differs - * depending on platform, because on some platforms - * GETTICKCOUNT is more likely to be right whereas on others - * `anow' is a better gold standard. - */ - { - long tnow = GETTICKCOUNT(); - - if (tnow + TICKSPERSEC/50 - anow < 0 || - anow + TICKSPERSEC/50 - tnow < 0 - ) { -#if defined TIMING_SYNC_ANOW - /* - * If anow is accurate and the tick count is wrong, - * this is likely to be because the tick count is - * derived from the system clock which has changed (as - * can occur on Unix). Therefore, we resolve this by - * inventing an offset which is used to adjust all - * future output from GETTICKCOUNT. - * - * A platform which defines TIMING_SYNC_ANOW is - * expected to have also defined this offset variable - * in (its platform-specific adjunct to) putty.h. - * Therefore we can simply reference it here and assume - * that it will exist. - */ - tickcount_offset += anow - tnow; -#elif defined TIMING_SYNC_TICKCOUNT - /* - * If the tick count is more likely to be accurate, we - * simply use that as our time value, which may mean we - * run no timers in this call (because we got called - * early), or alternatively it may mean we run lots of - * timers in a hurry because we were called late. - */ - anow = tnow; -#else -/* - * Any platform which defines TIMING_SYNC must also define one of the two - * auxiliary symbols TIMING_SYNC_ANOW and TIMING_SYNC_TICKCOUNT, to - * indicate which measurement to trust when the two disagree. - */ -#error TIMING_SYNC definition incomplete -#endif - } - } -#endif - - now = anow; - - while (1) { - first = (struct timer *)index234(timers, 0); - - if (!first) - return FALSE; /* no timers remaining */ - - if (find234(timer_contexts, first->ctx, NULL) == NULL) { - /* - * This timer belongs to a context that has been - * expired. Delete it without running. - */ - delpos234(timers, 0); - sfree(first); - } else if (first->now - now <= 0) { - /* - * This timer is active and has reached its running - * time. Run it. - */ - delpos234(timers, 0); - first->fn(first->ctx, first->now); - sfree(first); - } else { - /* - * This is the first still-active timer that is in the - * future. Return how long it has yet to go. - */ - *next = first->now; - return TRUE; - } - } -} - -/* - * Call to expire all timers associated with a given context. - */ -void expire_timer_context(void *ctx) -{ - init_timers(); - - /* - * We don't bother to check the return value; if the context - * already wasn't in the tree (presumably because no timers - * ever actually got scheduled for it) then that's fine and we - * simply don't need to do anything. - */ - del234(timer_contexts, ctx); -} diff --git a/tools/plink/tree234.c b/tools/plink/tree234.c deleted file mode 100644 index 4e2da9dd6..000000000 --- a/tools/plink/tree234.c +++ /dev/null @@ -1,1479 +0,0 @@ -/* - * tree234.c: reasonably generic counted 2-3-4 tree routines. - * - * This file is copyright 1999-2001 Simon Tatham. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL SIMON TATHAM BE LIABLE FOR - * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF - * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include - -#include "puttymem.h" -#include "tree234.h" - -#ifdef TEST -#define LOG(x) (printf x) -#else -#define LOG(x) -#endif - -typedef struct node234_Tag node234; - -struct tree234_Tag { - node234 *root; - cmpfn234 cmp; -}; - -struct node234_Tag { - node234 *parent; - node234 *kids[4]; - int counts[4]; - void *elems[3]; -}; - -/* - * Create a 2-3-4 tree. - */ -tree234 *newtree234(cmpfn234 cmp) -{ - tree234 *ret = snew(tree234); - LOG(("created tree %p\n", ret)); - ret->root = NULL; - ret->cmp = cmp; - return ret; -} - -/* - * Free a 2-3-4 tree (not including freeing the elements). - */ -static void freenode234(node234 * n) -{ - if (!n) - return; - freenode234(n->kids[0]); - freenode234(n->kids[1]); - freenode234(n->kids[2]); - freenode234(n->kids[3]); - sfree(n); -} - -void freetree234(tree234 * t) -{ - freenode234(t->root); - sfree(t); -} - -/* - * Internal function to count a node. - */ -static int countnode234(node234 * n) -{ - int count = 0; - int i; - if (!n) - return 0; - for (i = 0; i < 4; i++) - count += n->counts[i]; - for (i = 0; i < 3; i++) - if (n->elems[i]) - count++; - return count; -} - -/* - * Count the elements in a tree. - */ -int count234(tree234 * t) -{ - if (t->root) - return countnode234(t->root); - else - return 0; -} - -/* - * Add an element e to a 2-3-4 tree t. Returns e on success, or if - * an existing element compares equal, returns that. - */ -static void *add234_internal(tree234 * t, void *e, int index) -{ - node234 *n, **np, *left, *right; - void *orig_e = e; - int c, lcount, rcount; - - LOG(("adding node %p to tree %p\n", e, t)); - if (t->root == NULL) { - t->root = snew(node234); - t->root->elems[1] = t->root->elems[2] = NULL; - t->root->kids[0] = t->root->kids[1] = NULL; - t->root->kids[2] = t->root->kids[3] = NULL; - t->root->counts[0] = t->root->counts[1] = 0; - t->root->counts[2] = t->root->counts[3] = 0; - t->root->parent = NULL; - t->root->elems[0] = e; - LOG((" created root %p\n", t->root)); - return orig_e; - } - - n = NULL; /* placate gcc; will always be set below since t->root != NULL */ - np = &t->root; - while (*np) { - int childnum; - n = *np; - LOG((" node %p: %p/%d [%p] %p/%d [%p] %p/%d [%p] %p/%d\n", - n, - n->kids[0], n->counts[0], n->elems[0], - n->kids[1], n->counts[1], n->elems[1], - n->kids[2], n->counts[2], n->elems[2], - n->kids[3], n->counts[3])); - if (index >= 0) { - if (!n->kids[0]) { - /* - * Leaf node. We want to insert at kid position - * equal to the index: - * - * 0 A 1 B 2 C 3 - */ - childnum = index; - } else { - /* - * Internal node. We always descend through it (add - * always starts at the bottom, never in the - * middle). - */ - do { /* this is a do ... while (0) to allow `break' */ - if (index <= n->counts[0]) { - childnum = 0; - break; - } - index -= n->counts[0] + 1; - if (index <= n->counts[1]) { - childnum = 1; - break; - } - index -= n->counts[1] + 1; - if (index <= n->counts[2]) { - childnum = 2; - break; - } - index -= n->counts[2] + 1; - if (index <= n->counts[3]) { - childnum = 3; - break; - } - return NULL; /* error: index out of range */ - } while (0); - } - } else { - if ((c = t->cmp(e, n->elems[0])) < 0) - childnum = 0; - else if (c == 0) - return n->elems[0]; /* already exists */ - else if (n->elems[1] == NULL - || (c = t->cmp(e, n->elems[1])) < 0) childnum = 1; - else if (c == 0) - return n->elems[1]; /* already exists */ - else if (n->elems[2] == NULL - || (c = t->cmp(e, n->elems[2])) < 0) childnum = 2; - else if (c == 0) - return n->elems[2]; /* already exists */ - else - childnum = 3; - } - np = &n->kids[childnum]; - LOG((" moving to child %d (%p)\n", childnum, *np)); - } - - /* - * We need to insert the new element in n at position np. - */ - left = NULL; - lcount = 0; - right = NULL; - rcount = 0; - while (n) { - LOG((" at %p: %p/%d [%p] %p/%d [%p] %p/%d [%p] %p/%d\n", - n, - n->kids[0], n->counts[0], n->elems[0], - n->kids[1], n->counts[1], n->elems[1], - n->kids[2], n->counts[2], n->elems[2], - n->kids[3], n->counts[3])); - LOG((" need to insert %p/%d [%p] %p/%d at position %d\n", - left, lcount, e, right, rcount, np - n->kids)); - if (n->elems[1] == NULL) { - /* - * Insert in a 2-node; simple. - */ - if (np == &n->kids[0]) { - LOG((" inserting on left of 2-node\n")); - n->kids[2] = n->kids[1]; - n->counts[2] = n->counts[1]; - n->elems[1] = n->elems[0]; - n->kids[1] = right; - n->counts[1] = rcount; - n->elems[0] = e; - n->kids[0] = left; - n->counts[0] = lcount; - } else { /* np == &n->kids[1] */ - LOG((" inserting on right of 2-node\n")); - n->kids[2] = right; - n->counts[2] = rcount; - n->elems[1] = e; - n->kids[1] = left; - n->counts[1] = lcount; - } - if (n->kids[0]) - n->kids[0]->parent = n; - if (n->kids[1]) - n->kids[1]->parent = n; - if (n->kids[2]) - n->kids[2]->parent = n; - LOG((" done\n")); - break; - } else if (n->elems[2] == NULL) { - /* - * Insert in a 3-node; simple. - */ - if (np == &n->kids[0]) { - LOG((" inserting on left of 3-node\n")); - n->kids[3] = n->kids[2]; - n->counts[3] = n->counts[2]; - n->elems[2] = n->elems[1]; - n->kids[2] = n->kids[1]; - n->counts[2] = n->counts[1]; - n->elems[1] = n->elems[0]; - n->kids[1] = right; - n->counts[1] = rcount; - n->elems[0] = e; - n->kids[0] = left; - n->counts[0] = lcount; - } else if (np == &n->kids[1]) { - LOG((" inserting in middle of 3-node\n")); - n->kids[3] = n->kids[2]; - n->counts[3] = n->counts[2]; - n->elems[2] = n->elems[1]; - n->kids[2] = right; - n->counts[2] = rcount; - n->elems[1] = e; - n->kids[1] = left; - n->counts[1] = lcount; - } else { /* np == &n->kids[2] */ - LOG((" inserting on right of 3-node\n")); - n->kids[3] = right; - n->counts[3] = rcount; - n->elems[2] = e; - n->kids[2] = left; - n->counts[2] = lcount; - } - if (n->kids[0]) - n->kids[0]->parent = n; - if (n->kids[1]) - n->kids[1]->parent = n; - if (n->kids[2]) - n->kids[2]->parent = n; - if (n->kids[3]) - n->kids[3]->parent = n; - LOG((" done\n")); - break; - } else { - node234 *m = snew(node234); - m->parent = n->parent; - LOG((" splitting a 4-node; created new node %p\n", m)); - /* - * Insert in a 4-node; split into a 2-node and a - * 3-node, and move focus up a level. - * - * I don't think it matters which way round we put the - * 2 and the 3. For simplicity, we'll put the 3 first - * always. - */ - if (np == &n->kids[0]) { - m->kids[0] = left; - m->counts[0] = lcount; - m->elems[0] = e; - m->kids[1] = right; - m->counts[1] = rcount; - m->elems[1] = n->elems[0]; - m->kids[2] = n->kids[1]; - m->counts[2] = n->counts[1]; - e = n->elems[1]; - n->kids[0] = n->kids[2]; - n->counts[0] = n->counts[2]; - n->elems[0] = n->elems[2]; - n->kids[1] = n->kids[3]; - n->counts[1] = n->counts[3]; - } else if (np == &n->kids[1]) { - m->kids[0] = n->kids[0]; - m->counts[0] = n->counts[0]; - m->elems[0] = n->elems[0]; - m->kids[1] = left; - m->counts[1] = lcount; - m->elems[1] = e; - m->kids[2] = right; - m->counts[2] = rcount; - e = n->elems[1]; - n->kids[0] = n->kids[2]; - n->counts[0] = n->counts[2]; - n->elems[0] = n->elems[2]; - n->kids[1] = n->kids[3]; - n->counts[1] = n->counts[3]; - } else if (np == &n->kids[2]) { - m->kids[0] = n->kids[0]; - m->counts[0] = n->counts[0]; - m->elems[0] = n->elems[0]; - m->kids[1] = n->kids[1]; - m->counts[1] = n->counts[1]; - m->elems[1] = n->elems[1]; - m->kids[2] = left; - m->counts[2] = lcount; - /* e = e; */ - n->kids[0] = right; - n->counts[0] = rcount; - n->elems[0] = n->elems[2]; - n->kids[1] = n->kids[3]; - n->counts[1] = n->counts[3]; - } else { /* np == &n->kids[3] */ - m->kids[0] = n->kids[0]; - m->counts[0] = n->counts[0]; - m->elems[0] = n->elems[0]; - m->kids[1] = n->kids[1]; - m->counts[1] = n->counts[1]; - m->elems[1] = n->elems[1]; - m->kids[2] = n->kids[2]; - m->counts[2] = n->counts[2]; - n->kids[0] = left; - n->counts[0] = lcount; - n->elems[0] = e; - n->kids[1] = right; - n->counts[1] = rcount; - e = n->elems[2]; - } - m->kids[3] = n->kids[3] = n->kids[2] = NULL; - m->counts[3] = n->counts[3] = n->counts[2] = 0; - m->elems[2] = n->elems[2] = n->elems[1] = NULL; - if (m->kids[0]) - m->kids[0]->parent = m; - if (m->kids[1]) - m->kids[1]->parent = m; - if (m->kids[2]) - m->kids[2]->parent = m; - if (n->kids[0]) - n->kids[0]->parent = n; - if (n->kids[1]) - n->kids[1]->parent = n; - LOG((" left (%p): %p/%d [%p] %p/%d [%p] %p/%d\n", m, - m->kids[0], m->counts[0], m->elems[0], - m->kids[1], m->counts[1], m->elems[1], - m->kids[2], m->counts[2])); - LOG((" right (%p): %p/%d [%p] %p/%d\n", n, - n->kids[0], n->counts[0], n->elems[0], - n->kids[1], n->counts[1])); - left = m; - lcount = countnode234(left); - right = n; - rcount = countnode234(right); - } - if (n->parent) - np = (n->parent->kids[0] == n ? &n->parent->kids[0] : - n->parent->kids[1] == n ? &n->parent->kids[1] : - n->parent->kids[2] == n ? &n->parent->kids[2] : - &n->parent->kids[3]); - n = n->parent; - } - - /* - * If we've come out of here by `break', n will still be - * non-NULL and all we need to do is go back up the tree - * updating counts. If we've come here because n is NULL, we - * need to create a new root for the tree because the old one - * has just split into two. */ - if (n) { - while (n->parent) { - int count = countnode234(n); - int childnum; - childnum = (n->parent->kids[0] == n ? 0 : - n->parent->kids[1] == n ? 1 : - n->parent->kids[2] == n ? 2 : 3); - n->parent->counts[childnum] = count; - n = n->parent; - } - } else { - LOG((" root is overloaded, split into two\n")); - t->root = snew(node234); - t->root->kids[0] = left; - t->root->counts[0] = lcount; - t->root->elems[0] = e; - t->root->kids[1] = right; - t->root->counts[1] = rcount; - t->root->elems[1] = NULL; - t->root->kids[2] = NULL; - t->root->counts[2] = 0; - t->root->elems[2] = NULL; - t->root->kids[3] = NULL; - t->root->counts[3] = 0; - t->root->parent = NULL; - if (t->root->kids[0]) - t->root->kids[0]->parent = t->root; - if (t->root->kids[1]) - t->root->kids[1]->parent = t->root; - LOG((" new root is %p/%d [%p] %p/%d\n", - t->root->kids[0], t->root->counts[0], - t->root->elems[0], t->root->kids[1], t->root->counts[1])); - } - - return orig_e; -} - -void *add234(tree234 * t, void *e) -{ - if (!t->cmp) /* tree is unsorted */ - return NULL; - - return add234_internal(t, e, -1); -} -void *addpos234(tree234 * t, void *e, int index) -{ - if (index < 0 || /* index out of range */ - t->cmp) /* tree is sorted */ - return NULL; /* return failure */ - - return add234_internal(t, e, index); /* this checks the upper bound */ -} - -/* - * Look up the element at a given numeric index in a 2-3-4 tree. - * Returns NULL if the index is out of range. - */ -void *index234(tree234 * t, int index) -{ - node234 *n; - - if (!t->root) - return NULL; /* tree is empty */ - - if (index < 0 || index >= countnode234(t->root)) - return NULL; /* out of range */ - - n = t->root; - - while (n) { - if (index < n->counts[0]) - n = n->kids[0]; - else if (index -= n->counts[0] + 1, index < 0) - return n->elems[0]; - else if (index < n->counts[1]) - n = n->kids[1]; - else if (index -= n->counts[1] + 1, index < 0) - return n->elems[1]; - else if (index < n->counts[2]) - n = n->kids[2]; - else if (index -= n->counts[2] + 1, index < 0) - return n->elems[2]; - else - n = n->kids[3]; - } - - /* We shouldn't ever get here. I wonder how we did. */ - return NULL; -} - -/* - * Find an element e in a sorted 2-3-4 tree t. Returns NULL if not - * found. e is always passed as the first argument to cmp, so cmp - * can be an asymmetric function if desired. cmp can also be passed - * as NULL, in which case the compare function from the tree proper - * will be used. - */ -void *findrelpos234(tree234 * t, void *e, cmpfn234 cmp, - int relation, int *index) -{ - node234 *n; - void *ret; - int c; - int idx, ecount, kcount, cmpret; - - if (t->root == NULL) - return NULL; - - if (cmp == NULL) - cmp = t->cmp; - - n = t->root; - /* - * Attempt to find the element itself. - */ - idx = 0; - ecount = -1; - /* - * Prepare a fake `cmp' result if e is NULL. - */ - cmpret = 0; - if (e == NULL) { - assert(relation == REL234_LT || relation == REL234_GT); - if (relation == REL234_LT) - cmpret = +1; /* e is a max: always greater */ - else if (relation == REL234_GT) - cmpret = -1; /* e is a min: always smaller */ - } - while (1) { - for (kcount = 0; kcount < 4; kcount++) { - if (kcount >= 3 || n->elems[kcount] == NULL || - (c = cmpret ? cmpret : cmp(e, n->elems[kcount])) < 0) { - break; - } - if (n->kids[kcount]) - idx += n->counts[kcount]; - if (c == 0) { - ecount = kcount; - break; - } - idx++; - } - if (ecount >= 0) - break; - if (n->kids[kcount]) - n = n->kids[kcount]; - else - break; - } - - if (ecount >= 0) { - /* - * We have found the element we're looking for. It's - * n->elems[ecount], at tree index idx. If our search - * relation is EQ, LE or GE we can now go home. - */ - if (relation != REL234_LT && relation != REL234_GT) { - if (index) - *index = idx; - return n->elems[ecount]; - } - - /* - * Otherwise, we'll do an indexed lookup for the previous - * or next element. (It would be perfectly possible to - * implement these search types in a non-counted tree by - * going back up from where we are, but far more fiddly.) - */ - if (relation == REL234_LT) - idx--; - else - idx++; - } else { - /* - * We've found our way to the bottom of the tree and we - * know where we would insert this node if we wanted to: - * we'd put it in in place of the (empty) subtree - * n->kids[kcount], and it would have index idx - * - * But the actual element isn't there. So if our search - * relation is EQ, we're doomed. - */ - if (relation == REL234_EQ) - return NULL; - - /* - * Otherwise, we must do an index lookup for index idx-1 - * (if we're going left - LE or LT) or index idx (if we're - * going right - GE or GT). - */ - if (relation == REL234_LT || relation == REL234_LE) { - idx--; - } - } - - /* - * We know the index of the element we want; just call index234 - * to do the rest. This will return NULL if the index is out of - * bounds, which is exactly what we want. - */ - ret = index234(t, idx); - if (ret && index) - *index = idx; - return ret; -} -void *find234(tree234 * t, void *e, cmpfn234 cmp) -{ - return findrelpos234(t, e, cmp, REL234_EQ, NULL); -} -void *findrel234(tree234 * t, void *e, cmpfn234 cmp, int relation) -{ - return findrelpos234(t, e, cmp, relation, NULL); -} -void *findpos234(tree234 * t, void *e, cmpfn234 cmp, int *index) -{ - return findrelpos234(t, e, cmp, REL234_EQ, index); -} - -/* - * Delete an element e in a 2-3-4 tree. Does not free the element, - * merely removes all links to it from the tree nodes. - */ -static void *delpos234_internal(tree234 * t, int index) -{ - node234 *n; - void *retval; - int ei = -1; - - retval = 0; - - n = t->root; - LOG(("deleting item %d from tree %p\n", index, t)); - while (1) { - while (n) { - int ki; - node234 *sub; - - LOG( - (" node %p: %p/%d [%p] %p/%d [%p] %p/%d [%p] %p/%d index=%d\n", - n, n->kids[0], n->counts[0], n->elems[0], n->kids[1], - n->counts[1], n->elems[1], n->kids[2], n->counts[2], - n->elems[2], n->kids[3], n->counts[3], index)); - if (index < n->counts[0]) { - ki = 0; - } else if (index -= n->counts[0] + 1, index < 0) { - ei = 0; - break; - } else if (index < n->counts[1]) { - ki = 1; - } else if (index -= n->counts[1] + 1, index < 0) { - ei = 1; - break; - } else if (index < n->counts[2]) { - ki = 2; - } else if (index -= n->counts[2] + 1, index < 0) { - ei = 2; - break; - } else { - ki = 3; - } - /* - * Recurse down to subtree ki. If it has only one element, - * we have to do some transformation to start with. - */ - LOG((" moving to subtree %d\n", ki)); - sub = n->kids[ki]; - if (!sub->elems[1]) { - LOG((" subtree has only one element!\n", ki)); - if (ki > 0 && n->kids[ki - 1]->elems[1]) { - /* - * Case 3a, left-handed variant. Child ki has - * only one element, but child ki-1 has two or - * more. So we need to move a subtree from ki-1 - * to ki. - * - * . C . . B . - * / \ -> / \ - * [more] a A b B c d D e [more] a A b c C d D e - */ - node234 *sib = n->kids[ki - 1]; - int lastelem = (sib->elems[2] ? 2 : - sib->elems[1] ? 1 : 0); - sub->kids[2] = sub->kids[1]; - sub->counts[2] = sub->counts[1]; - sub->elems[1] = sub->elems[0]; - sub->kids[1] = sub->kids[0]; - sub->counts[1] = sub->counts[0]; - sub->elems[0] = n->elems[ki - 1]; - sub->kids[0] = sib->kids[lastelem + 1]; - sub->counts[0] = sib->counts[lastelem + 1]; - if (sub->kids[0]) - sub->kids[0]->parent = sub; - n->elems[ki - 1] = sib->elems[lastelem]; - sib->kids[lastelem + 1] = NULL; - sib->counts[lastelem + 1] = 0; - sib->elems[lastelem] = NULL; - n->counts[ki] = countnode234(sub); - LOG((" case 3a left\n")); - LOG( - (" index and left subtree count before adjustment: %d, %d\n", - index, n->counts[ki - 1])); - index += n->counts[ki - 1]; - n->counts[ki - 1] = countnode234(sib); - index -= n->counts[ki - 1]; - LOG( - (" index and left subtree count after adjustment: %d, %d\n", - index, n->counts[ki - 1])); - } else if (ki < 3 && n->kids[ki + 1] - && n->kids[ki + 1]->elems[1]) { - /* - * Case 3a, right-handed variant. ki has only - * one element but ki+1 has two or more. Move a - * subtree from ki+1 to ki. - * - * . B . . C . - * / \ -> / \ - * a A b c C d D e [more] a A b B c d D e [more] - */ - node234 *sib = n->kids[ki + 1]; - int j; - sub->elems[1] = n->elems[ki]; - sub->kids[2] = sib->kids[0]; - sub->counts[2] = sib->counts[0]; - if (sub->kids[2]) - sub->kids[2]->parent = sub; - n->elems[ki] = sib->elems[0]; - sib->kids[0] = sib->kids[1]; - sib->counts[0] = sib->counts[1]; - for (j = 0; j < 2 && sib->elems[j + 1]; j++) { - sib->kids[j + 1] = sib->kids[j + 2]; - sib->counts[j + 1] = sib->counts[j + 2]; - sib->elems[j] = sib->elems[j + 1]; - } - sib->kids[j + 1] = NULL; - sib->counts[j + 1] = 0; - sib->elems[j] = NULL; - n->counts[ki] = countnode234(sub); - n->counts[ki + 1] = countnode234(sib); - LOG((" case 3a right\n")); - } else { - /* - * Case 3b. ki has only one element, and has no - * neighbour with more than one. So pick a - * neighbour and merge it with ki, taking an - * element down from n to go in the middle. - * - * . B . . - * / \ -> | - * a A b c C d a A b B c C d - * - * (Since at all points we have avoided - * descending to a node with only one element, - * we can be sure that n is not reduced to - * nothingness by this move, _unless_ it was - * the very first node, ie the root of the - * tree. In that case we remove the now-empty - * root and replace it with its single large - * child as shown.) - */ - node234 *sib; - int j; - - if (ki > 0) { - ki--; - index += n->counts[ki] + 1; - } - sib = n->kids[ki]; - sub = n->kids[ki + 1]; - - sub->kids[3] = sub->kids[1]; - sub->counts[3] = sub->counts[1]; - sub->elems[2] = sub->elems[0]; - sub->kids[2] = sub->kids[0]; - sub->counts[2] = sub->counts[0]; - sub->elems[1] = n->elems[ki]; - sub->kids[1] = sib->kids[1]; - sub->counts[1] = sib->counts[1]; - if (sub->kids[1]) - sub->kids[1]->parent = sub; - sub->elems[0] = sib->elems[0]; - sub->kids[0] = sib->kids[0]; - sub->counts[0] = sib->counts[0]; - if (sub->kids[0]) - sub->kids[0]->parent = sub; - - n->counts[ki + 1] = countnode234(sub); - - sfree(sib); - - /* - * That's built the big node in sub. Now we - * need to remove the reference to sib in n. - */ - for (j = ki; j < 3 && n->kids[j + 1]; j++) { - n->kids[j] = n->kids[j + 1]; - n->counts[j] = n->counts[j + 1]; - n->elems[j] = j < 2 ? n->elems[j + 1] : NULL; - } - n->kids[j] = NULL; - n->counts[j] = 0; - if (j < 3) - n->elems[j] = NULL; - LOG((" case 3b ki=%d\n", ki)); - - if (!n->elems[0]) { - /* - * The root is empty and needs to be - * removed. - */ - LOG((" shifting root!\n")); - t->root = sub; - sub->parent = NULL; - sfree(n); - } - } - } - n = sub; - } - if (!retval) - retval = n->elems[ei]; - - if (ei == -1) - return NULL; /* although this shouldn't happen */ - - /* - * Treat special case: this is the one remaining item in - * the tree. n is the tree root (no parent), has one - * element (no elems[1]), and has no kids (no kids[0]). - */ - if (!n->parent && !n->elems[1] && !n->kids[0]) { - LOG((" removed last element in tree\n")); - sfree(n); - t->root = NULL; - return retval; - } - - /* - * Now we have the element we want, as n->elems[ei], and we - * have also arranged for that element not to be the only - * one in its node. So... - */ - - if (!n->kids[0] && n->elems[1]) { - /* - * Case 1. n is a leaf node with more than one element, - * so it's _really easy_. Just delete the thing and - * we're done. - */ - int i; - LOG((" case 1\n")); - for (i = ei; i < 2 && n->elems[i + 1]; i++) - n->elems[i] = n->elems[i + 1]; - n->elems[i] = NULL; - /* - * Having done that to the leaf node, we now go back up - * the tree fixing the counts. - */ - while (n->parent) { - int childnum; - childnum = (n->parent->kids[0] == n ? 0 : - n->parent->kids[1] == n ? 1 : - n->parent->kids[2] == n ? 2 : 3); - n->parent->counts[childnum]--; - n = n->parent; - } - return retval; /* finished! */ - } else if (n->kids[ei]->elems[1]) { - /* - * Case 2a. n is an internal node, and the root of the - * subtree to the left of e has more than one element. - * So find the predecessor p to e (ie the largest node - * in that subtree), place it where e currently is, and - * then start the deletion process over again on the - * subtree with p as target. - */ - node234 *m = n->kids[ei]; - void *target; - LOG((" case 2a\n")); - while (m->kids[0]) { - m = (m->kids[3] ? m->kids[3] : - m->kids[2] ? m->kids[2] : - m->kids[1] ? m->kids[1] : m->kids[0]); - } - target = (m->elems[2] ? m->elems[2] : - m->elems[1] ? m->elems[1] : m->elems[0]); - n->elems[ei] = target; - index = n->counts[ei] - 1; - n = n->kids[ei]; - } else if (n->kids[ei + 1]->elems[1]) { - /* - * Case 2b, symmetric to 2a but s/left/right/ and - * s/predecessor/successor/. (And s/largest/smallest/). - */ - node234 *m = n->kids[ei + 1]; - void *target; - LOG((" case 2b\n")); - while (m->kids[0]) { - m = m->kids[0]; - } - target = m->elems[0]; - n->elems[ei] = target; - n = n->kids[ei + 1]; - index = 0; - } else { - /* - * Case 2c. n is an internal node, and the subtrees to - * the left and right of e both have only one element. - * So combine the two subnodes into a single big node - * with their own elements on the left and right and e - * in the middle, then restart the deletion process on - * that subtree, with e still as target. - */ - node234 *a = n->kids[ei], *b = n->kids[ei + 1]; - int j; - - LOG((" case 2c\n")); - a->elems[1] = n->elems[ei]; - a->kids[2] = b->kids[0]; - a->counts[2] = b->counts[0]; - if (a->kids[2]) - a->kids[2]->parent = a; - a->elems[2] = b->elems[0]; - a->kids[3] = b->kids[1]; - a->counts[3] = b->counts[1]; - if (a->kids[3]) - a->kids[3]->parent = a; - sfree(b); - n->counts[ei] = countnode234(a); - /* - * That's built the big node in a, and destroyed b. Now - * remove the reference to b (and e) in n. - */ - for (j = ei; j < 2 && n->elems[j + 1]; j++) { - n->elems[j] = n->elems[j + 1]; - n->kids[j + 1] = n->kids[j + 2]; - n->counts[j + 1] = n->counts[j + 2]; - } - n->elems[j] = NULL; - n->kids[j + 1] = NULL; - n->counts[j + 1] = 0; - /* - * It's possible, in this case, that we've just removed - * the only element in the root of the tree. If so, - * shift the root. - */ - if (n->elems[0] == NULL) { - LOG((" shifting root!\n")); - t->root = a; - a->parent = NULL; - sfree(n); - } - /* - * Now go round the deletion process again, with n - * pointing at the new big node and e still the same. - */ - n = a; - index = a->counts[0] + a->counts[1] + 1; - } - } -} -void *delpos234(tree234 * t, int index) -{ - if (index < 0 || index >= countnode234(t->root)) - return NULL; - return delpos234_internal(t, index); -} -void *del234(tree234 * t, void *e) -{ - int index; - if (!findrelpos234(t, e, NULL, REL234_EQ, &index)) - return NULL; /* it wasn't in there anyway */ - return delpos234_internal(t, index); /* it's there; delete it. */ -} - -#ifdef TEST - -/* - * Test code for the 2-3-4 tree. This code maintains an alternative - * representation of the data in the tree, in an array (using the - * obvious and slow insert and delete functions). After each tree - * operation, the verify() function is called, which ensures all - * the tree properties are preserved: - * - node->child->parent always equals node - * - tree->root->parent always equals NULL - * - number of kids == 0 or number of elements + 1; - * - tree has the same depth everywhere - * - every node has at least one element - * - subtree element counts are accurate - * - any NULL kid pointer is accompanied by a zero count - * - in a sorted tree: ordering property between elements of a - * node and elements of its children is preserved - * and also ensures the list represented by the tree is the same - * list it should be. (This last check also doubly verifies the - * ordering properties, because the `same list it should be' is by - * definition correctly ordered. It also ensures all nodes are - * distinct, because the enum functions would get caught in a loop - * if not.) - */ - -#include - -/* - * Error reporting function. - */ -void error(char *fmt, ...) -{ - va_list ap; - printf("ERROR: "); - va_start(ap, fmt); - vfprintf(stdout, fmt, ap); - va_end(ap); - printf("\n"); -} - -/* The array representation of the data. */ -void **array; -int arraylen, arraysize; -cmpfn234 cmp; - -/* The tree representation of the same data. */ -tree234 *tree; - -typedef struct { - int treedepth; - int elemcount; -} chkctx; - -int chknode(chkctx * ctx, int level, node234 * node, - void *lowbound, void *highbound) -{ - int nkids, nelems; - int i; - int count; - - /* Count the non-NULL kids. */ - for (nkids = 0; nkids < 4 && node->kids[nkids]; nkids++); - /* Ensure no kids beyond the first NULL are non-NULL. */ - for (i = nkids; i < 4; i++) - if (node->kids[i]) { - error("node %p: nkids=%d but kids[%d] non-NULL", - node, nkids, i); - } else if (node->counts[i]) { - error("node %p: kids[%d] NULL but count[%d]=%d nonzero", - node, i, i, node->counts[i]); - } - - /* Count the non-NULL elements. */ - for (nelems = 0; nelems < 3 && node->elems[nelems]; nelems++); - /* Ensure no elements beyond the first NULL are non-NULL. */ - for (i = nelems; i < 3; i++) - if (node->elems[i]) { - error("node %p: nelems=%d but elems[%d] non-NULL", - node, nelems, i); - } - - if (nkids == 0) { - /* - * If nkids==0, this is a leaf node; verify that the tree - * depth is the same everywhere. - */ - if (ctx->treedepth < 0) - ctx->treedepth = level; /* we didn't know the depth yet */ - else if (ctx->treedepth != level) - error("node %p: leaf at depth %d, previously seen depth %d", - node, level, ctx->treedepth); - } else { - /* - * If nkids != 0, then it should be nelems+1, unless nelems - * is 0 in which case nkids should also be 0 (and so we - * shouldn't be in this condition at all). - */ - int shouldkids = (nelems ? nelems + 1 : 0); - if (nkids != shouldkids) { - error("node %p: %d elems should mean %d kids but has %d", - node, nelems, shouldkids, nkids); - } - } - - /* - * nelems should be at least 1. - */ - if (nelems == 0) { - error("node %p: no elems", node, nkids); - } - - /* - * Add nelems to the running element count of the whole tree. - */ - ctx->elemcount += nelems; - - /* - * Check ordering property: all elements should be strictly > - * lowbound, strictly < highbound, and strictly < each other in - * sequence. (lowbound and highbound are NULL at edges of tree - * - both NULL at root node - and NULL is considered to be < - * everything and > everything. IYSWIM.) - */ - if (cmp) { - for (i = -1; i < nelems; i++) { - void *lower = (i == -1 ? lowbound : node->elems[i]); - void *higher = - (i + 1 == nelems ? highbound : node->elems[i + 1]); - if (lower && higher && cmp(lower, higher) >= 0) { - error("node %p: kid comparison [%d=%s,%d=%s] failed", - node, i, lower, i + 1, higher); - } - } - } - - /* - * Check parent pointers: all non-NULL kids should have a - * parent pointer coming back to this node. - */ - for (i = 0; i < nkids; i++) - if (node->kids[i]->parent != node) { - error("node %p kid %d: parent ptr is %p not %p", - node, i, node->kids[i]->parent, node); - } - - - /* - * Now (finally!) recurse into subtrees. - */ - count = nelems; - - for (i = 0; i < nkids; i++) { - void *lower = (i == 0 ? lowbound : node->elems[i - 1]); - void *higher = (i >= nelems ? highbound : node->elems[i]); - int subcount = - chknode(ctx, level + 1, node->kids[i], lower, higher); - if (node->counts[i] != subcount) { - error("node %p kid %d: count says %d, subtree really has %d", - node, i, node->counts[i], subcount); - } - count += subcount; - } - - return count; -} - -void verify(void) -{ - chkctx ctx; - int i; - void *p; - - ctx.treedepth = -1; /* depth unknown yet */ - ctx.elemcount = 0; /* no elements seen yet */ - /* - * Verify validity of tree properties. - */ - if (tree->root) { - if (tree->root->parent != NULL) - error("root->parent is %p should be null", tree->root->parent); - chknode(&ctx, 0, tree->root, NULL, NULL); - } - printf("tree depth: %d\n", ctx.treedepth); - /* - * Enumerate the tree and ensure it matches up to the array. - */ - for (i = 0; NULL != (p = index234(tree, i)); i++) { - if (i >= arraylen) - error("tree contains more than %d elements", arraylen); - if (array[i] != p) - error("enum at position %d: array says %s, tree says %s", - i, array[i], p); - } - if (ctx.elemcount != i) { - error("tree really contains %d elements, enum gave %d", - ctx.elemcount, i); - } - if (i < arraylen) { - error("enum gave only %d elements, array has %d", i, arraylen); - } - i = count234(tree); - if (ctx.elemcount != i) { - error("tree really contains %d elements, count234 gave %d", - ctx.elemcount, i); - } -} - -void internal_addtest(void *elem, int index, void *realret) -{ - int i, j; - void *retval; - - if (arraysize < arraylen + 1) { - arraysize = arraylen + 1 + 256; - array = sresize(array, arraysize, void *); - } - - i = index; - /* now i points to the first element >= elem */ - retval = elem; /* expect elem returned (success) */ - for (j = arraylen; j > i; j--) - array[j] = array[j - 1]; - array[i] = elem; /* add elem to array */ - arraylen++; - - if (realret != retval) { - error("add: retval was %p expected %p", realret, retval); - } - - verify(); -} - -void addtest(void *elem) -{ - int i; - void *realret; - - realret = add234(tree, elem); - - i = 0; - while (i < arraylen && cmp(elem, array[i]) > 0) - i++; - if (i < arraylen && !cmp(elem, array[i])) { - void *retval = array[i]; /* expect that returned not elem */ - if (realret != retval) { - error("add: retval was %p expected %p", realret, retval); - } - } else - internal_addtest(elem, i, realret); -} - -void addpostest(void *elem, int i) -{ - void *realret; - - realret = addpos234(tree, elem, i); - - internal_addtest(elem, i, realret); -} - -void delpostest(int i) -{ - int index = i; - void *elem = array[i], *ret; - - /* i points to the right element */ - while (i < arraylen - 1) { - array[i] = array[i + 1]; - i++; - } - arraylen--; /* delete elem from array */ - - if (tree->cmp) - ret = del234(tree, elem); - else - ret = delpos234(tree, index); - - if (ret != elem) { - error("del returned %p, expected %p", ret, elem); - } - - verify(); -} - -void deltest(void *elem) -{ - int i; - - i = 0; - while (i < arraylen && cmp(elem, array[i]) > 0) - i++; - if (i >= arraylen || cmp(elem, array[i]) != 0) - return; /* don't do it! */ - delpostest(i); -} - -/* A sample data set and test utility. Designed for pseudo-randomness, - * and yet repeatability. */ - -/* - * This random number generator uses the `portable implementation' - * given in ANSI C99 draft N869. It assumes `unsigned' is 32 bits; - * change it if not. - */ -int randomnumber(unsigned *seed) -{ - *seed *= 1103515245; - *seed += 12345; - return ((*seed) / 65536) % 32768; -} - -int mycmp(void *av, void *bv) -{ - char const *a = (char const *) av; - char const *b = (char const *) bv; - return strcmp(a, b); -} - -#define lenof(x) ( sizeof((x)) / sizeof(*(x)) ) - -char *strings[] = { - "a", "ab", "absque", "coram", "de", - "palam", "clam", "cum", "ex", "e", - "sine", "tenus", "pro", "prae", - "banana", "carrot", "cabbage", "broccoli", "onion", "zebra", - "penguin", "blancmange", "pangolin", "whale", "hedgehog", - "giraffe", "peanut", "bungee", "foo", "bar", "baz", "quux", - "murfl", "spoo", "breen", "flarn", "octothorpe", - "snail", "tiger", "elephant", "octopus", "warthog", "armadillo", - "aardvark", "wyvern", "dragon", "elf", "dwarf", "orc", "goblin", - "pixie", "basilisk", "warg", "ape", "lizard", "newt", "shopkeeper", - "wand", "ring", "amulet" -}; - -#define NSTR lenof(strings) - -int findtest(void) -{ - const static int rels[] = { - REL234_EQ, REL234_GE, REL234_LE, REL234_LT, REL234_GT - }; - const static char *const relnames[] = { - "EQ", "GE", "LE", "LT", "GT" - }; - int i, j, rel, index; - char *p, *ret, *realret, *realret2; - int lo, hi, mid, c; - - for (i = 0; i < NSTR; i++) { - p = strings[i]; - for (j = 0; j < sizeof(rels) / sizeof(*rels); j++) { - rel = rels[j]; - - lo = 0; - hi = arraylen - 1; - while (lo <= hi) { - mid = (lo + hi) / 2; - c = strcmp(p, array[mid]); - if (c < 0) - hi = mid - 1; - else if (c > 0) - lo = mid + 1; - else - break; - } - - if (c == 0) { - if (rel == REL234_LT) - ret = (mid > 0 ? array[--mid] : NULL); - else if (rel == REL234_GT) - ret = (mid < arraylen - 1 ? array[++mid] : NULL); - else - ret = array[mid]; - } else { - assert(lo == hi + 1); - if (rel == REL234_LT || rel == REL234_LE) { - mid = hi; - ret = (hi >= 0 ? array[hi] : NULL); - } else if (rel == REL234_GT || rel == REL234_GE) { - mid = lo; - ret = (lo < arraylen ? array[lo] : NULL); - } else - ret = NULL; - } - - realret = findrelpos234(tree, p, NULL, rel, &index); - if (realret != ret) { - error("find(\"%s\",%s) gave %s should be %s", - p, relnames[j], realret, ret); - } - if (realret && index != mid) { - error("find(\"%s\",%s) gave %d should be %d", - p, relnames[j], index, mid); - } - if (realret && rel == REL234_EQ) { - realret2 = index234(tree, index); - if (realret2 != realret) { - error("find(\"%s\",%s) gave %s(%d) but %d -> %s", - p, relnames[j], realret, index, index, realret2); - } - } -#if 0 - printf("find(\"%s\",%s) gave %s(%d)\n", p, relnames[j], - realret, index); -#endif - } - } - - realret = findrelpos234(tree, NULL, NULL, REL234_GT, &index); - if (arraylen && (realret != array[0] || index != 0)) { - error("find(NULL,GT) gave %s(%d) should be %s(0)", - realret, index, array[0]); - } else if (!arraylen && (realret != NULL)) { - error("find(NULL,GT) gave %s(%d) should be NULL", realret, index); - } - - realret = findrelpos234(tree, NULL, NULL, REL234_LT, &index); - if (arraylen - && (realret != array[arraylen - 1] || index != arraylen - 1)) { - error("find(NULL,LT) gave %s(%d) should be %s(0)", realret, index, - array[arraylen - 1]); - } else if (!arraylen && (realret != NULL)) { - error("find(NULL,LT) gave %s(%d) should be NULL", realret, index); - } -} - -int main(void) -{ - int in[NSTR]; - int i, j, k; - unsigned seed = 0; - - for (i = 0; i < NSTR; i++) - in[i] = 0; - array = NULL; - arraylen = arraysize = 0; - tree = newtree234(mycmp); - cmp = mycmp; - - verify(); - for (i = 0; i < 10000; i++) { - j = randomnumber(&seed); - j %= NSTR; - printf("trial: %d\n", i); - if (in[j]) { - printf("deleting %s (%d)\n", strings[j], j); - deltest(strings[j]); - in[j] = 0; - } else { - printf("adding %s (%d)\n", strings[j], j); - addtest(strings[j]); - in[j] = 1; - } - findtest(); - } - - while (arraylen > 0) { - j = randomnumber(&seed); - j %= arraylen; - deltest(array[j]); - } - - freetree234(tree); - - /* - * Now try an unsorted tree. We don't really need to test - * delpos234 because we know del234 is based on it, so it's - * already been tested in the above sorted-tree code; but for - * completeness we'll use it to tear down our unsorted tree - * once we've built it. - */ - tree = newtree234(NULL); - cmp = NULL; - verify(); - for (i = 0; i < 1000; i++) { - printf("trial: %d\n", i); - j = randomnumber(&seed); - j %= NSTR; - k = randomnumber(&seed); - k %= count234(tree) + 1; - printf("adding string %s at index %d\n", strings[j], k); - addpostest(strings[j], k); - } - while (count234(tree) > 0) { - printf("cleanup: tree size %d\n", count234(tree)); - j = randomnumber(&seed); - j %= count234(tree); - printf("deleting string %s from index %d\n", array[j], j); - delpostest(j); - } - - return 0; -} - -#endif diff --git a/tools/plink/tree234.h b/tools/plink/tree234.h deleted file mode 100644 index a043f1f07..000000000 --- a/tools/plink/tree234.h +++ /dev/null @@ -1,160 +0,0 @@ -/* - * tree234.h: header defining functions in tree234.c. - * - * This file is copyright 1999-2001 Simon Tatham. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL SIMON TATHAM BE LIABLE FOR - * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF - * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef TREE234_H -#define TREE234_H - -/* - * This typedef is opaque outside tree234.c itself. - */ -typedef struct tree234_Tag tree234; - -typedef int (*cmpfn234) (void *, void *); - -/* - * Create a 2-3-4 tree. If `cmp' is NULL, the tree is unsorted, and - * lookups by key will fail: you can only look things up by numeric - * index, and you have to use addpos234() and delpos234(). - */ -tree234 *newtree234(cmpfn234 cmp); - -/* - * Free a 2-3-4 tree (not including freeing the elements). - */ -void freetree234(tree234 * t); - -/* - * Add an element e to a sorted 2-3-4 tree t. Returns e on success, - * or if an existing element compares equal, returns that. - */ -void *add234(tree234 * t, void *e); - -/* - * Add an element e to an unsorted 2-3-4 tree t. Returns e on - * success, NULL on failure. (Failure should only occur if the - * index is out of range or the tree is sorted.) - * - * Index range can be from 0 to the tree's current element count, - * inclusive. - */ -void *addpos234(tree234 * t, void *e, int index); - -/* - * Look up the element at a given numeric index in a 2-3-4 tree. - * Returns NULL if the index is out of range. - * - * One obvious use for this function is in iterating over the whole - * of a tree (sorted or unsorted): - * - * for (i = 0; (p = index234(tree, i)) != NULL; i++) consume(p); - * - * or - * - * int maxcount = count234(tree); - * for (i = 0; i < maxcount; i++) { - * p = index234(tree, i); - * assert(p != NULL); - * consume(p); - * } - */ -void *index234(tree234 * t, int index); - -/* - * Find an element e in a sorted 2-3-4 tree t. Returns NULL if not - * found. e is always passed as the first argument to cmp, so cmp - * can be an asymmetric function if desired. cmp can also be passed - * as NULL, in which case the compare function from the tree proper - * will be used. - * - * Three of these functions are special cases of findrelpos234. The - * non-`pos' variants lack the `index' parameter: if the parameter - * is present and non-NULL, it must point to an integer variable - * which will be filled with the numeric index of the returned - * element. - * - * The non-`rel' variants lack the `relation' parameter. This - * parameter allows you to specify what relation the element you - * provide has to the element you're looking for. This parameter - * can be: - * - * REL234_EQ - find only an element that compares equal to e - * REL234_LT - find the greatest element that compares < e - * REL234_LE - find the greatest element that compares <= e - * REL234_GT - find the smallest element that compares > e - * REL234_GE - find the smallest element that compares >= e - * - * Non-`rel' variants assume REL234_EQ. - * - * If `rel' is REL234_GT or REL234_LT, the `e' parameter may be - * NULL. In this case, REL234_GT will return the smallest element - * in the tree, and REL234_LT will return the greatest. This gives - * an alternative means of iterating over a sorted tree, instead of - * using index234: - * - * // to loop forwards - * for (p = NULL; (p = findrel234(tree, p, NULL, REL234_GT)) != NULL ;) - * consume(p); - * - * // to loop backwards - * for (p = NULL; (p = findrel234(tree, p, NULL, REL234_LT)) != NULL ;) - * consume(p); - */ -enum { - REL234_EQ, REL234_LT, REL234_LE, REL234_GT, REL234_GE -}; -void *find234(tree234 * t, void *e, cmpfn234 cmp); -void *findrel234(tree234 * t, void *e, cmpfn234 cmp, int relation); -void *findpos234(tree234 * t, void *e, cmpfn234 cmp, int *index); -void *findrelpos234(tree234 * t, void *e, cmpfn234 cmp, int relation, - int *index); - -/* - * Delete an element e in a 2-3-4 tree. Does not free the element, - * merely removes all links to it from the tree nodes. - * - * delpos234 deletes the element at a particular tree index: it - * works on both sorted and unsorted trees. - * - * del234 deletes the element passed to it, so it only works on - * sorted trees. (It's equivalent to using findpos234 to determine - * the index of an element, and then passing that index to - * delpos234.) - * - * Both functions return a pointer to the element they delete, for - * the user to free or pass on elsewhere or whatever. If the index - * is out of range (delpos234) or the element is already not in the - * tree (del234) then they return NULL. - */ -void *del234(tree234 * t, void *e); -void *delpos234(tree234 * t, int index); - -/* - * Return the total element count of a tree234. - */ -int count234(tree234 * t); - -#endif /* TREE234_H */ diff --git a/tools/plink/version.c b/tools/plink/version.c deleted file mode 100644 index c0d28b884..000000000 --- a/tools/plink/version.c +++ /dev/null @@ -1,42 +0,0 @@ -/* - * PuTTY version numbering - */ - -#define STR1(x) #x -#define STR(x) STR1(x) - -#if defined SNAPSHOT - -#if defined SVN_REV -#define SNAPSHOT_TEXT STR(SNAPSHOT) ":r" STR(SVN_REV) -#else -#define SNAPSHOT_TEXT STR(SNAPSHOT) -#endif - -char ver[] = "Development snapshot " SNAPSHOT_TEXT; -char sshver[] = "PuTTY-Snapshot-" SNAPSHOT_TEXT; - -#undef SNAPSHOT_TEXT - -#elif defined RELEASE - -char ver[] = "Release " STR(RELEASE); -char sshver[] = "PuTTY-Release-" STR(RELEASE); - -#elif defined SVN_REV - -char ver[] = "Custom build r" STR(SVN_REV); -char sshver[] = "PuTTY-Custom-r" STR(SVN_REV); - -#else - -char ver[] = "Unidentified build, " __DATE__ " " __TIME__; -char sshver[] = "PuTTY-Local: " __DATE__ " " __TIME__; - -#endif - -/* - * SSH local version string MUST be under 40 characters. Here's a - * compile time assertion to verify this. - */ -enum { vorpal_sword = 1 / (sizeof(sshver) <= 40) }; diff --git a/tools/plink/wildcard.c b/tools/plink/wildcard.c deleted file mode 100644 index 75a7573b2..000000000 --- a/tools/plink/wildcard.c +++ /dev/null @@ -1,472 +0,0 @@ -/* - * Wildcard matching engine for use with SFTP-based file transfer - * programs (PSFTP, new-look PSCP): since SFTP has no notion of - * getting the remote side to do globbing (and rightly so) we have - * to do it locally, by retrieving all the filenames in a directory - * and checking each against the wildcard pattern. - */ - -#include -#include -#include - -#include "putty.h" - -/* - * Definition of wildcard syntax: - * - * - * matches any sequence of characters, including zero. - * - ? matches exactly one character which can be anything. - * - [abc] matches exactly one character which is a, b or c. - * - [a-f] matches anything from a through f. - * - [^a-f] matches anything _except_ a through f. - * - [-_] matches - or _; [^-_] matches anything else. (The - is - * non-special if it occurs immediately after the opening - * bracket or ^.) - * - [a^] matches an a or a ^. (The ^ is non-special if it does - * _not_ occur immediately after the opening bracket.) - * - \*, \?, \[, \], \\ match the single characters *, ?, [, ], \. - * - All other characters are non-special and match themselves. - */ - -/* - * Some notes on differences from POSIX globs (IEEE Std 1003.1, 2003 ed.): - * - backslashes act as escapes even within [] bracket expressions - * - does not support [!...] for non-matching list (POSIX are weird); - * NB POSIX allows [^...] as well via "A bracket expression starting - * with an unquoted circumflex character produces unspecified - * results". If we wanted to allow [!...] we might want to define - * [^!] as having its literal meaning (match '^' or '!'). - * - none of the scary [[:class:]] stuff, etc - */ - -/* - * The wildcard matching technique we use is very simple and - * potentially O(N^2) in running time, but I don't anticipate it - * being that bad in reality (particularly since N will be the size - * of a filename, which isn't all that much). Perhaps one day, once - * PuTTY has grown a regexp matcher for some other reason, I might - * come back and reimplement wildcards by translating them into - * regexps or directly into NFAs; but for the moment, in the - * absence of any other need for the NFA->DFA translation engine, - * anything more than the simplest possible wildcard matcher is - * vast code-size overkill. - * - * Essentially, these wildcards are much simpler than regexps in - * that they consist of a sequence of rigid fragments (? and [...] - * can never match more or less than one character) separated by - * asterisks. It is therefore extremely simple to look at a rigid - * fragment and determine whether or not it begins at a particular - * point in the test string; so we can search along the string - * until we find each fragment, then search for the next. As long - * as we find each fragment in the _first_ place it occurs, there - * will never be a danger of having to backpedal and try to find it - * again somewhere else. - */ - -enum { - WC_TRAILINGBACKSLASH = 1, - WC_UNCLOSEDCLASS, - WC_INVALIDRANGE -}; - -/* - * Error reporting is done by returning various negative values - * from the wildcard routines. Passing any such value to wc_error - * will give a human-readable message. - */ -const char *wc_error(int value) -{ - value = abs(value); - switch (value) { - case WC_TRAILINGBACKSLASH: - return "'\' occurred at end of string (expected another character)"; - case WC_UNCLOSEDCLASS: - return "expected ']' to close character class"; - case WC_INVALIDRANGE: - return "character range was not terminated (']' just after '-')"; - } - return "INTERNAL ERROR: unrecognised wildcard error number"; -} - -/* - * This is the routine that tests a target string to see if an - * initial substring of it matches a fragment. If successful, it - * returns 1, and advances both `fragment' and `target' past the - * fragment and matching substring respectively. If unsuccessful it - * returns zero. If the wildcard fragment suffers a syntax error, - * it returns <0 and the precise value indexes into wc_error. - */ -static int wc_match_fragment(const char **fragment, const char **target) -{ - const char *f, *t; - - f = *fragment; - t = *target; - /* - * The fragment terminates at either the end of the string, or - * the first (unescaped) *. - */ - while (*f && *f != '*' && *t) { - /* - * Extract one character from t, and one character's worth - * of pattern from f, and step along both. Return 0 if they - * fail to match. - */ - if (*f == '\\') { - /* - * Backslash, which means f[1] is to be treated as a - * literal character no matter what it is. It may not - * be the end of the string. - */ - if (!f[1]) - return -WC_TRAILINGBACKSLASH; /* error */ - if (f[1] != *t) - return 0; /* failed to match */ - f += 2; - } else if (*f == '?') { - /* - * Question mark matches anything. - */ - f++; - } else if (*f == '[') { - int invert = 0; - int matched = 0; - /* - * Open bracket introduces a character class. - */ - f++; - if (*f == '^') { - invert = 1; - f++; - } - while (*f != ']') { - if (*f == '\\') - f++; /* backslashes still work */ - if (!*f) - return -WC_UNCLOSEDCLASS; /* error again */ - if (f[1] == '-') { - int lower, upper, ourchr; - lower = (unsigned char) *f++; - f++; /* eat the minus */ - if (*f == ']') - return -WC_INVALIDRANGE; /* different error! */ - if (*f == '\\') - f++; /* backslashes _still_ work */ - if (!*f) - return -WC_UNCLOSEDCLASS; /* error again */ - upper = (unsigned char) *f++; - ourchr = (unsigned char) *t; - if (lower > upper) { - int t = lower; lower = upper; upper = t; - } - if (ourchr >= lower && ourchr <= upper) - matched = 1; - } else { - matched |= (*t == *f++); - } - } - if (invert == matched) - return 0; /* failed to match character class */ - f++; /* eat the ] */ - } else { - /* - * Non-special character matches itself. - */ - if (*f != *t) - return 0; - f++; - } - /* - * Now we've done that, increment t past the character we - * matched. - */ - t++; - } - if (!*f || *f == '*') { - /* - * We have reached the end of f without finding a mismatch; - * so we're done. Update the caller pointers and return 1. - */ - *fragment = f; - *target = t; - return 1; - } - /* - * Otherwise, we must have reached the end of t before we - * reached the end of f; so we've failed. Return 0. - */ - return 0; -} - -/* - * This is the real wildcard matching routine. It returns 1 for a - * successful match, 0 for an unsuccessful match, and <0 for a - * syntax error in the wildcard. - */ -int wc_match(const char *wildcard, const char *target) -{ - int ret; - - /* - * Every time we see a '*' _followed_ by a fragment, we just - * search along the string for a location at which the fragment - * matches. The only special case is when we see a fragment - * right at the start, in which case we just call the matching - * routine once and give up if it fails. - */ - if (*wildcard != '*') { - ret = wc_match_fragment(&wildcard, &target); - if (ret <= 0) - return ret; /* pass back failure or error alike */ - } - - while (*wildcard) { - assert(*wildcard == '*'); - while (*wildcard == '*') - wildcard++; - - /* - * It's possible we've just hit the end of the wildcard - * after seeing a *, in which case there's no need to - * bother searching any more because we've won. - */ - if (!*wildcard) - return 1; - - /* - * Now `wildcard' points at the next fragment. So we - * attempt to match it against `target', and if that fails - * we increment `target' and try again, and so on. When we - * find we're about to try matching against the empty - * string, we give up and return 0. - */ - ret = 0; - while (*target) { - const char *save_w = wildcard, *save_t = target; - - ret = wc_match_fragment(&wildcard, &target); - - if (ret < 0) - return ret; /* syntax error */ - - if (ret > 0 && !*wildcard && *target) { - /* - * Final special case - literally. - * - * This situation arises when we are matching a - * _terminal_ fragment of the wildcard (that is, - * there is nothing after it, e.g. "*a"), and it - * has matched _too early_. For example, matching - * "*a" against "parka" will match the "a" fragment - * against the _first_ a, and then (if it weren't - * for this special case) matching would fail - * because we're at the end of the wildcard but not - * at the end of the target string. - * - * In this case what we must do is measure the - * length of the fragment in the target (which is - * why we saved `target'), jump straight to that - * distance from the end of the string using - * strlen, and match the same fragment again there - * (which is why we saved `wildcard'). Then we - * return whatever that operation returns. - */ - target = save_t + strlen(save_t) - (target - save_t); - wildcard = save_w; - return wc_match_fragment(&wildcard, &target); - } - - if (ret > 0) - break; - target++; - } - if (ret > 0) - continue; - return 0; - } - - /* - * If we reach here, it must be because we successfully matched - * a fragment and then found ourselves right at the end of the - * wildcard. Hence, we return 1 if and only if we are also - * right at the end of the target. - */ - return (*target ? 0 : 1); -} - -/* - * Another utility routine that translates a non-wildcard string - * into its raw equivalent by removing any escaping backslashes. - * Expects a target string buffer of anything up to the length of - * the original wildcard. You can also pass NULL as the output - * buffer if you're only interested in the return value. - * - * Returns 1 on success, or 0 if a wildcard character was - * encountered. In the latter case the output string MAY not be - * zero-terminated and you should not use it for anything! - */ -int wc_unescape(char *output, const char *wildcard) -{ - while (*wildcard) { - if (*wildcard == '\\') { - wildcard++; - /* We are lenient about trailing backslashes in non-wildcards. */ - if (*wildcard) { - if (output) - *output++ = *wildcard; - wildcard++; - } - } else if (*wildcard == '*' || *wildcard == '?' || - *wildcard == '[' || *wildcard == ']') { - return 0; /* it's a wildcard! */ - } else { - if (output) - *output++ = *wildcard; - wildcard++; - } - } - *output = '\0'; - return 1; /* it's clean */ -} - -#ifdef TESTMODE - -struct test { - const char *wildcard; - const char *target; - int expected_result; -}; - -const struct test fragment_tests[] = { - /* - * We exhaustively unit-test the fragment matching routine - * itself, which should save us the need to test all its - * intricacies during the full wildcard tests. - */ - {"abc", "abc", 1}, - {"abc", "abd", 0}, - {"abc", "abcd", 1}, - {"abcd", "abc", 0}, - {"ab[cd]", "abc", 1}, - {"ab[cd]", "abd", 1}, - {"ab[cd]", "abe", 0}, - {"ab[^cd]", "abc", 0}, - {"ab[^cd]", "abd", 0}, - {"ab[^cd]", "abe", 1}, - {"ab\\", "abc", -WC_TRAILINGBACKSLASH}, - {"ab\\*", "ab*", 1}, - {"ab\\?", "ab*", 0}, - {"ab?", "abc", 1}, - {"ab?", "ab", 0}, - {"ab[", "abc", -WC_UNCLOSEDCLASS}, - {"ab[c-", "abb", -WC_UNCLOSEDCLASS}, - {"ab[c-]", "abb", -WC_INVALIDRANGE}, - {"ab[c-e]", "abb", 0}, - {"ab[c-e]", "abc", 1}, - {"ab[c-e]", "abd", 1}, - {"ab[c-e]", "abe", 1}, - {"ab[c-e]", "abf", 0}, - {"ab[e-c]", "abb", 0}, - {"ab[e-c]", "abc", 1}, - {"ab[e-c]", "abd", 1}, - {"ab[e-c]", "abe", 1}, - {"ab[e-c]", "abf", 0}, - {"ab[^c-e]", "abb", 1}, - {"ab[^c-e]", "abc", 0}, - {"ab[^c-e]", "abd", 0}, - {"ab[^c-e]", "abe", 0}, - {"ab[^c-e]", "abf", 1}, - {"ab[^e-c]", "abb", 1}, - {"ab[^e-c]", "abc", 0}, - {"ab[^e-c]", "abd", 0}, - {"ab[^e-c]", "abe", 0}, - {"ab[^e-c]", "abf", 1}, - {"ab[a^]", "aba", 1}, - {"ab[a^]", "ab^", 1}, - {"ab[a^]", "abb", 0}, - {"ab[^a^]", "aba", 0}, - {"ab[^a^]", "ab^", 0}, - {"ab[^a^]", "abb", 1}, - {"ab[-c]", "ab-", 1}, - {"ab[-c]", "abc", 1}, - {"ab[-c]", "abd", 0}, - {"ab[^-c]", "ab-", 0}, - {"ab[^-c]", "abc", 0}, - {"ab[^-c]", "abd", 1}, - {"ab[\\[-\\]]", "abZ", 0}, - {"ab[\\[-\\]]", "ab[", 1}, - {"ab[\\[-\\]]", "ab\\", 1}, - {"ab[\\[-\\]]", "ab]", 1}, - {"ab[\\[-\\]]", "ab^", 0}, - {"ab[^\\[-\\]]", "abZ", 1}, - {"ab[^\\[-\\]]", "ab[", 0}, - {"ab[^\\[-\\]]", "ab\\", 0}, - {"ab[^\\[-\\]]", "ab]", 0}, - {"ab[^\\[-\\]]", "ab^", 1}, - {"ab[a-fA-F]", "aba", 1}, - {"ab[a-fA-F]", "abF", 1}, - {"ab[a-fA-F]", "abZ", 0}, -}; - -const struct test full_tests[] = { - {"a", "argh", 0}, - {"a", "ba", 0}, - {"a", "a", 1}, - {"a*", "aardvark", 1}, - {"a*", "badger", 0}, - {"*a", "park", 0}, - {"*a", "pArka", 1}, - {"*a", "parka", 1}, - {"*a*", "park", 1}, - {"*a*", "perk", 0}, - {"?b*r?", "abracadabra", 1}, - {"?b*r?", "abracadabr", 0}, - {"?b*r?", "abracadabzr", 0}, -}; - -int main(void) -{ - int i; - int fails, passes; - - fails = passes = 0; - - for (i = 0; i < sizeof(fragment_tests)/sizeof(*fragment_tests); i++) { - const char *f, *t; - int eret, aret; - f = fragment_tests[i].wildcard; - t = fragment_tests[i].target; - eret = fragment_tests[i].expected_result; - aret = wc_match_fragment(&f, &t); - if (aret != eret) { - printf("failed test: /%s/ against /%s/ returned %d not %d\n", - fragment_tests[i].wildcard, fragment_tests[i].target, - aret, eret); - fails++; - } else - passes++; - } - - for (i = 0; i < sizeof(full_tests)/sizeof(*full_tests); i++) { - const char *f, *t; - int eret, aret; - f = full_tests[i].wildcard; - t = full_tests[i].target; - eret = full_tests[i].expected_result; - aret = wc_match(f, t); - if (aret != eret) { - printf("failed test: /%s/ against /%s/ returned %d not %d\n", - full_tests[i].wildcard, full_tests[i].target, - aret, eret); - fails++; - } else - passes++; - } - - printf("passed %d, failed %d\n", passes, fails); - - return 0; -} - -#endif diff --git a/tools/plink/wincons.c b/tools/plink/wincons.c deleted file mode 100644 index 4f984d958..000000000 --- a/tools/plink/wincons.c +++ /dev/null @@ -1,409 +0,0 @@ -/* - * wincons.c - various interactive-prompt routines shared between - * the Windows console PuTTY tools - */ - -#include -#include -#include - -#include "putty.h" -#include "storage.h" -#include "ssh.h" - -int console_batch_mode = FALSE; - -static void *console_logctx = NULL; - -/* - * Clean up and exit. - */ -void cleanup_exit(int code) -{ - /* - * Clean up. - */ - sk_cleanup(); - - random_save_seed(); -#ifdef MSCRYPTOAPI - crypto_wrapup(); -#endif - - exit(code); -} - -void set_busy_status(void *frontend, int status) -{ -} - -void notify_remote_exit(void *frontend) -{ -} - -void timer_change_notify(long next) -{ -} - -int verify_ssh_host_key(void *frontend, char *host, int port, char *keytype, - char *keystr, char *fingerprint, - void (*callback)(void *ctx, int result), void *ctx) -{ - int ret; - HANDLE hin; - DWORD savemode, i; - - static const char absentmsg_batch[] = - "The server's host key is not cached in the registry. You\n" - "have no guarantee that the server is the computer you\n" - "think it is.\n" - "The server's %s key fingerprint is:\n" - "%s\n" - "Connection abandoned.\n"; - static const char absentmsg[] = - "The server's host key is not cached in the registry. You\n" - "have no guarantee that the server is the computer you\n" - "think it is.\n" - "The server's %s key fingerprint is:\n" - "%s\n" - "If you trust this host, enter \"y\" to add the key to\n" - "PuTTY's cache and carry on connecting.\n" - "If you want to carry on connecting just once, without\n" - "adding the key to the cache, enter \"n\".\n" - "If you do not trust this host, press Return to abandon the\n" - "connection.\n" - "Store key in cache? (y/n) "; - - static const char wrongmsg_batch[] = - "WARNING - POTENTIAL SECURITY BREACH!\n" - "The server's host key does not match the one PuTTY has\n" - "cached in the registry. This means that either the\n" - "server administrator has changed the host key, or you\n" - "have actually connected to another computer pretending\n" - "to be the server.\n" - "The new %s key fingerprint is:\n" - "%s\n" - "Connection abandoned.\n"; - static const char wrongmsg[] = - "WARNING - POTENTIAL SECURITY BREACH!\n" - "The server's host key does not match the one PuTTY has\n" - "cached in the registry. This means that either the\n" - "server administrator has changed the host key, or you\n" - "have actually connected to another computer pretending\n" - "to be the server.\n" - "The new %s key fingerprint is:\n" - "%s\n" - "If you were expecting this change and trust the new key,\n" - "enter \"y\" to update PuTTY's cache and continue connecting.\n" - "If you want to carry on connecting but without updating\n" - "the cache, enter \"n\".\n" - "If you want to abandon the connection completely, press\n" - "Return to cancel. Pressing Return is the ONLY guaranteed\n" - "safe choice.\n" - "Update cached key? (y/n, Return cancels connection) "; - - static const char abandoned[] = "Connection abandoned.\n"; - - char line[32]; - - /* - * Verify the key against the registry. - */ - ret = verify_host_key(host, port, keytype, keystr); - - if (ret == 0) /* success - key matched OK */ - return 1; - - if (ret == 2) { /* key was different */ - if (console_batch_mode) { - fprintf(stderr, wrongmsg_batch, keytype, fingerprint); - return 0; - } - fprintf(stderr, wrongmsg, keytype, fingerprint); - fflush(stderr); - } - if (ret == 1) { /* key was absent */ - if (console_batch_mode) { - fprintf(stderr, absentmsg_batch, keytype, fingerprint); - return 0; - } - fprintf(stderr, absentmsg, keytype, fingerprint); - fflush(stderr); - } - - hin = GetStdHandle(STD_INPUT_HANDLE); - GetConsoleMode(hin, &savemode); - SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT | - ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT)); - ReadFile(hin, line, sizeof(line) - 1, &i, NULL); - SetConsoleMode(hin, savemode); - - if (line[0] != '\0' && line[0] != '\r' && line[0] != '\n') { - if (line[0] == 'y' || line[0] == 'Y') - store_host_key(host, port, keytype, keystr); - return 1; - } else { - fprintf(stderr, abandoned); - return 0; - } -} - -void update_specials_menu(void *frontend) -{ -} - -/* - * Ask whether the selected algorithm is acceptable (since it was - * below the configured 'warn' threshold). - */ -int askalg(void *frontend, const char *algtype, const char *algname, - void (*callback)(void *ctx, int result), void *ctx) -{ - HANDLE hin; - DWORD savemode, i; - - static const char msg[] = - "The first %s supported by the server is\n" - "%s, which is below the configured warning threshold.\n" - "Continue with connection? (y/n) "; - static const char msg_batch[] = - "The first %s supported by the server is\n" - "%s, which is below the configured warning threshold.\n" - "Connection abandoned.\n"; - static const char abandoned[] = "Connection abandoned.\n"; - - char line[32]; - - if (console_batch_mode) { - fprintf(stderr, msg_batch, algtype, algname); - return 0; - } - - fprintf(stderr, msg, algtype, algname); - fflush(stderr); - - hin = GetStdHandle(STD_INPUT_HANDLE); - GetConsoleMode(hin, &savemode); - SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT | - ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT)); - ReadFile(hin, line, sizeof(line) - 1, &i, NULL); - SetConsoleMode(hin, savemode); - - if (line[0] == 'y' || line[0] == 'Y') { - return 1; - } else { - fprintf(stderr, abandoned); - return 0; - } -} - -/* - * Ask whether to wipe a session log file before writing to it. - * Returns 2 for wipe, 1 for append, 0 for cancel (don't log). - */ -int askappend(void *frontend, Filename filename, - void (*callback)(void *ctx, int result), void *ctx) -{ - HANDLE hin; - DWORD savemode, i; - - static const char msgtemplate[] = - "The session log file \"%.*s\" already exists.\n" - "You can overwrite it with a new session log,\n" - "append your session log to the end of it,\n" - "or disable session logging for this session.\n" - "Enter \"y\" to wipe the file, \"n\" to append to it,\n" - "or just press Return to disable logging.\n" - "Wipe the log file? (y/n, Return cancels logging) "; - - static const char msgtemplate_batch[] = - "The session log file \"%.*s\" already exists.\n" - "Logging will not be enabled.\n"; - - char line[32]; - - if (console_batch_mode) { - fprintf(stderr, msgtemplate_batch, FILENAME_MAX, filename.path); - fflush(stderr); - return 0; - } - fprintf(stderr, msgtemplate, FILENAME_MAX, filename.path); - fflush(stderr); - - hin = GetStdHandle(STD_INPUT_HANDLE); - GetConsoleMode(hin, &savemode); - SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT | - ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT)); - ReadFile(hin, line, sizeof(line) - 1, &i, NULL); - SetConsoleMode(hin, savemode); - - if (line[0] == 'y' || line[0] == 'Y') - return 2; - else if (line[0] == 'n' || line[0] == 'N') - return 1; - else - return 0; -} - -/* - * Warn about the obsolescent key file format. - * - * Uniquely among these functions, this one does _not_ expect a - * frontend handle. This means that if PuTTY is ported to a - * platform which requires frontend handles, this function will be - * an anomaly. Fortunately, the problem it addresses will not have - * been present on that platform, so it can plausibly be - * implemented as an empty function. - */ -void old_keyfile_warning(void) -{ - static const char message[] = - "You are loading an SSH-2 private key which has an\n" - "old version of the file format. This means your key\n" - "file is not fully tamperproof. Future versions of\n" - "PuTTY may stop supporting this private key format,\n" - "so we recommend you convert your key to the new\n" - "format.\n" - "\n" - "Once the key is loaded into PuTTYgen, you can perform\n" - "this conversion simply by saving it again.\n"; - - fputs(message, stderr); -} - -/* - * Display the fingerprints of the PGP Master Keys to the user. - */ -void pgp_fingerprints(void) -{ - fputs("These are the fingerprints of the PuTTY PGP Master Keys. They can\n" - "be used to establish a trust path from this executable to another\n" - "one. See the manual for more information.\n" - "(Note: these fingerprints have nothing to do with SSH!)\n" - "\n" - "PuTTY Master Key (RSA), 1024-bit:\n" - " " PGP_RSA_MASTER_KEY_FP "\n" - "PuTTY Master Key (DSA), 1024-bit:\n" - " " PGP_DSA_MASTER_KEY_FP "\n", stdout); -} - -void console_provide_logctx(void *logctx) -{ - console_logctx = logctx; -} - -void logevent(void *frontend, const char *string) -{ - log_eventlog(console_logctx, string); -} - -static void console_data_untrusted(HANDLE hout, const char *data, int len) -{ - DWORD dummy; - /* FIXME: control-character filtering */ - WriteFile(hout, data, len, &dummy, NULL); -} - -int console_get_userpass_input(prompts_t *p, unsigned char *in, int inlen) -{ - HANDLE hin, hout; - size_t curr_prompt; - - /* - * Zero all the results, in case we abort half-way through. - */ - { - int i; - for (i = 0; i < (int)p->n_prompts; i++) - memset(p->prompts[i]->result, 0, p->prompts[i]->result_len); - } - - /* - * The prompts_t might contain a message to be displayed but no - * actual prompt. More usually, though, it will contain - * questions that the user needs to answer, in which case we - * need to ensure that we're able to get the answers. - */ - if (p->n_prompts) { - if (console_batch_mode) - return 0; - hin = GetStdHandle(STD_INPUT_HANDLE); - if (hin == INVALID_HANDLE_VALUE) { - fprintf(stderr, "Cannot get standard input handle\n"); - cleanup_exit(1); - } - } - - /* - * And if we have anything to print, we need standard output. - */ - if ((p->name_reqd && p->name) || p->instruction || p->n_prompts) { - hout = GetStdHandle(STD_OUTPUT_HANDLE); - if (hout == INVALID_HANDLE_VALUE) { - fprintf(stderr, "Cannot get standard output handle\n"); - cleanup_exit(1); - } - } - - /* - * Preamble. - */ - /* We only print the `name' caption if we have to... */ - if (p->name_reqd && p->name) { - size_t l = strlen(p->name); - console_data_untrusted(hout, p->name, l); - if (p->name[l-1] != '\n') - console_data_untrusted(hout, "\n", 1); - } - /* ...but we always print any `instruction'. */ - if (p->instruction) { - size_t l = strlen(p->instruction); - console_data_untrusted(hout, p->instruction, l); - if (p->instruction[l-1] != '\n') - console_data_untrusted(hout, "\n", 1); - } - - for (curr_prompt = 0; curr_prompt < p->n_prompts; curr_prompt++) { - - DWORD savemode, newmode, i = 0; - prompt_t *pr = p->prompts[curr_prompt]; - BOOL r; - - GetConsoleMode(hin, &savemode); - newmode = savemode | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT; - if (!pr->echo) - newmode &= ~ENABLE_ECHO_INPUT; - else - newmode |= ENABLE_ECHO_INPUT; - SetConsoleMode(hin, newmode); - - console_data_untrusted(hout, pr->prompt, strlen(pr->prompt)); - - r = ReadFile(hin, pr->result, pr->result_len - 1, &i, NULL); - - SetConsoleMode(hin, savemode); - - if ((int) i > pr->result_len) - i = pr->result_len - 1; - else - i = i - 2; - pr->result[i] = '\0'; - - if (!pr->echo) { - DWORD dummy; - WriteFile(hout, "\r\n", 2, &dummy, NULL); - } - - } - - return 1; /* success */ - -} - -void frontend_keypress(void *handle) -{ - /* - * This is nothing but a stub, in console code. - */ - return; -} diff --git a/tools/plink/windefs.c b/tools/plink/windefs.c deleted file mode 100644 index de01dafaa..000000000 --- a/tools/plink/windefs.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * windefs.c: default settings that are specific to Windows. - */ - -#include "putty.h" - -#include - -FontSpec platform_default_fontspec(const char *name) -{ - FontSpec ret; - if (!strcmp(name, "Font")) { - strcpy(ret.name, "Courier New"); - ret.isbold = 0; - ret.charset = ANSI_CHARSET; - ret.height = 10; - } else { - ret.name[0] = '\0'; - } - return ret; -} - -Filename platform_default_filename(const char *name) -{ - Filename ret; - if (!strcmp(name, "LogFileName")) - strcpy(ret.path, "putty.log"); - else - *ret.path = '\0'; - return ret; -} - -char *platform_default_s(const char *name) -{ - if (!strcmp(name, "SerialLine")) - return dupstr("COM1"); - return NULL; -} - -int platform_default_i(const char *name, int def) -{ - return def; -} diff --git a/tools/plink/wingss.c b/tools/plink/wingss.c deleted file mode 100644 index 742106e88..000000000 --- a/tools/plink/wingss.c +++ /dev/null @@ -1,322 +0,0 @@ -#ifndef NO_GSSAPI - -#include "putty.h" - -#define SECURITY_WIN32 -#include - -#include "sshgss.h" -#include "misc.h" - -#define NOTHING -#define DECL_SSPI_FUNCTION(linkage, rettype, name, params) \ - typedef rettype (WINAPI *t_##name) params; \ - linkage t_##name p_##name -#define GET_SSPI_FUNCTION(module, name) \ - p_##name = module ? (t_##name) GetProcAddress(module, #name) : NULL - -DECL_SSPI_FUNCTION(static, SECURITY_STATUS, - AcquireCredentialsHandleA, - (SEC_CHAR *, SEC_CHAR *, ULONG, PLUID, - PVOID, SEC_GET_KEY_FN, PVOID, PCredHandle, PTimeStamp)); -DECL_SSPI_FUNCTION(static, SECURITY_STATUS, - InitializeSecurityContextA, - (PCredHandle, PCtxtHandle, SEC_CHAR *, ULONG, ULONG, - ULONG, PSecBufferDesc, ULONG, PCtxtHandle, - PSecBufferDesc, PULONG, PTimeStamp)); -DECL_SSPI_FUNCTION(static, SECURITY_STATUS, - FreeContextBuffer, - (PVOID)); -DECL_SSPI_FUNCTION(static, SECURITY_STATUS, - FreeCredentialsHandle, - (PCredHandle)); -DECL_SSPI_FUNCTION(static, SECURITY_STATUS, - DeleteSecurityContext, - (PCtxtHandle)); -DECL_SSPI_FUNCTION(static, SECURITY_STATUS, - QueryContextAttributesA, - (PCtxtHandle, ULONG, PVOID)); -DECL_SSPI_FUNCTION(static, SECURITY_STATUS, - MakeSignature, - (PCtxtHandle, ULONG, PSecBufferDesc, ULONG)); - -static HMODULE security_module = NULL; - -typedef struct winSsh_gss_ctx { - unsigned long maj_stat; - unsigned long min_stat; - CredHandle cred_handle; - CtxtHandle context; - PCtxtHandle context_handle; - TimeStamp expiry; -} winSsh_gss_ctx; - - -const Ssh_gss_buf gss_mech_krb5={9,"\x2A\x86\x48\x86\xF7\x12\x01\x02\x02"}; - -int ssh_gss_init(void) -{ - if (security_module) - return 1; /* already initialised */ - - security_module = LoadLibrary("secur32.dll"); - if (security_module) { - GET_SSPI_FUNCTION(security_module, AcquireCredentialsHandleA); - GET_SSPI_FUNCTION(security_module, InitializeSecurityContextA); - GET_SSPI_FUNCTION(security_module, FreeContextBuffer); - GET_SSPI_FUNCTION(security_module, FreeCredentialsHandle); - GET_SSPI_FUNCTION(security_module, DeleteSecurityContext); - GET_SSPI_FUNCTION(security_module, QueryContextAttributesA); - GET_SSPI_FUNCTION(security_module, MakeSignature); - return 1; - } - return 0; -} - -Ssh_gss_stat ssh_gss_indicate_mech(Ssh_gss_buf *mech) -{ - *mech = gss_mech_krb5; - return SSH_GSS_OK; -} - - -Ssh_gss_stat ssh_gss_import_name(char *host, Ssh_gss_name *srv_name) -{ - char *pStr; - - /* Check hostname */ - if (host == NULL) return SSH_GSS_FAILURE; - - /* copy it into form host/FQDN */ - pStr = dupcat("host/", host, NULL); - - *srv_name = (Ssh_gss_name) pStr; - - return SSH_GSS_OK; -} - -Ssh_gss_stat ssh_gss_acquire_cred(Ssh_gss_ctx *ctx) -{ - winSsh_gss_ctx *winctx = snew(winSsh_gss_ctx); - memset(winctx, 0, sizeof(winSsh_gss_ctx)); - - /* prepare our "wrapper" structure */ - winctx->maj_stat = winctx->min_stat = SEC_E_OK; - winctx->context_handle = NULL; - - /* Specifying no principal name here means use the credentials of - the current logged-in user */ - - winctx->maj_stat = p_AcquireCredentialsHandleA(NULL, - "Kerberos", - SECPKG_CRED_OUTBOUND, - NULL, - NULL, - NULL, - NULL, - &winctx->cred_handle, - &winctx->expiry); - - if (winctx->maj_stat != SEC_E_OK) return SSH_GSS_FAILURE; - - *ctx = (Ssh_gss_ctx) winctx; - return SSH_GSS_OK; -} - - -Ssh_gss_stat ssh_gss_init_sec_context(Ssh_gss_ctx *ctx, - Ssh_gss_name srv_name, - int to_deleg, - Ssh_gss_buf *recv_tok, - Ssh_gss_buf *send_tok) -{ - winSsh_gss_ctx *winctx = (winSsh_gss_ctx *) *ctx; - SecBuffer wsend_tok = {send_tok->length,SECBUFFER_TOKEN,send_tok->value}; - SecBuffer wrecv_tok = {recv_tok->length,SECBUFFER_TOKEN,recv_tok->value}; - SecBufferDesc output_desc={SECBUFFER_VERSION,1,&wsend_tok}; - SecBufferDesc input_desc ={SECBUFFER_VERSION,1,&wrecv_tok}; - unsigned long flags=ISC_REQ_MUTUAL_AUTH|ISC_REQ_REPLAY_DETECT| - ISC_REQ_CONFIDENTIALITY|ISC_REQ_ALLOCATE_MEMORY; - unsigned long ret_flags=0; - - /* check if we have to delegate ... */ - if (to_deleg) flags |= ISC_REQ_DELEGATE; - winctx->maj_stat = p_InitializeSecurityContextA(&winctx->cred_handle, - winctx->context_handle, - (char*) srv_name, - flags, - 0, /* reserved */ - SECURITY_NATIVE_DREP, - &input_desc, - 0, /* reserved */ - &winctx->context, - &output_desc, - &ret_flags, - &winctx->expiry); - - /* prepare for the next round */ - winctx->context_handle = &winctx->context; - send_tok->value = wsend_tok.pvBuffer; - send_tok->length = wsend_tok.cbBuffer; - - /* check & return our status */ - if (winctx->maj_stat==SEC_E_OK) return SSH_GSS_S_COMPLETE; - if (winctx->maj_stat==SEC_I_CONTINUE_NEEDED) return SSH_GSS_S_CONTINUE_NEEDED; - - return SSH_GSS_FAILURE; -} - -Ssh_gss_stat ssh_gss_free_tok(Ssh_gss_buf *send_tok) -{ - /* check input */ - if (send_tok == NULL) return SSH_GSS_FAILURE; - - /* free Windows buffer */ - p_FreeContextBuffer(send_tok->value); - SSH_GSS_CLEAR_BUF(send_tok); - - return SSH_GSS_OK; -} - -Ssh_gss_stat ssh_gss_release_cred(Ssh_gss_ctx *ctx) -{ - winSsh_gss_ctx *winctx= (winSsh_gss_ctx *) *ctx; - - /* check input */ - if (winctx == NULL) return SSH_GSS_FAILURE; - - /* free Windows data */ - p_FreeCredentialsHandle(&winctx->cred_handle); - p_DeleteSecurityContext(&winctx->context); - - /* delete our "wrapper" structure */ - sfree(winctx); - *ctx = (Ssh_gss_ctx) NULL; - - return SSH_GSS_OK; -} - - -Ssh_gss_stat ssh_gss_release_name(Ssh_gss_name *srv_name) -{ - char *pStr= (char *) *srv_name; - - if (pStr == NULL) return SSH_GSS_FAILURE; - sfree(pStr); - *srv_name = (Ssh_gss_name) NULL; - - return SSH_GSS_OK; -} - -Ssh_gss_stat ssh_gss_display_status(Ssh_gss_ctx ctx, Ssh_gss_buf *buf) -{ - winSsh_gss_ctx *winctx = (winSsh_gss_ctx *) ctx; - char *msg; - - if (winctx == NULL) return SSH_GSS_FAILURE; - - /* decode the error code */ - switch (winctx->maj_stat) { - case SEC_E_OK: msg="SSPI status OK"; break; - case SEC_E_INVALID_HANDLE: msg="The handle passed to the function" - " is invalid."; - break; - case SEC_E_TARGET_UNKNOWN: msg="The target was not recognized."; break; - case SEC_E_LOGON_DENIED: msg="The logon failed."; break; - case SEC_E_INTERNAL_ERROR: msg="The Local Security Authority cannot" - " be contacted."; - break; - case SEC_E_NO_CREDENTIALS: msg="No credentials are available in the" - " security package."; - break; - case SEC_E_NO_AUTHENTICATING_AUTHORITY: - msg="No authority could be contacted for authentication." - "The domain name of the authenticating party could be wrong," - " the domain could be unreachable, or there might have been" - " a trust relationship failure."; - break; - case SEC_E_INSUFFICIENT_MEMORY: - msg="One or more of the SecBufferDesc structures passed as" - " an OUT parameter has a buffer that is too small."; - break; - case SEC_E_INVALID_TOKEN: - msg="The error is due to a malformed input token, such as a" - " token corrupted in transit, a token" - " of incorrect size, or a token passed into the wrong" - " security package. Passing a token to" - " the wrong package can happen if client and server did not" - " negotiate the proper security package."; - break; - default: - msg = "Internal SSPI error"; - break; - } - - buf->value = dupstr(msg); - buf->length = strlen(buf->value); - - return SSH_GSS_OK; -} - -Ssh_gss_stat ssh_gss_get_mic(Ssh_gss_ctx ctx, Ssh_gss_buf *buf, - Ssh_gss_buf *hash) -{ - winSsh_gss_ctx *winctx= (winSsh_gss_ctx *) ctx; - SecPkgContext_Sizes ContextSizes; - SecBufferDesc InputBufferDescriptor; - SecBuffer InputSecurityToken[2]; - - if (winctx == NULL) return SSH_GSS_FAILURE; - - winctx->maj_stat = 0; - - memset(&ContextSizes, 0, sizeof(ContextSizes)); - - winctx->maj_stat = p_QueryContextAttributesA(&winctx->context, - SECPKG_ATTR_SIZES, - &ContextSizes); - - if (winctx->maj_stat != SEC_E_OK || - ContextSizes.cbMaxSignature == 0) - return winctx->maj_stat; - - InputBufferDescriptor.cBuffers = 2; - InputBufferDescriptor.pBuffers = InputSecurityToken; - InputBufferDescriptor.ulVersion = SECBUFFER_VERSION; - InputSecurityToken[0].BufferType = SECBUFFER_DATA; - InputSecurityToken[0].cbBuffer = buf->length; - InputSecurityToken[0].pvBuffer = buf->value; - InputSecurityToken[1].BufferType = SECBUFFER_TOKEN; - InputSecurityToken[1].cbBuffer = ContextSizes.cbMaxSignature; - InputSecurityToken[1].pvBuffer = snewn(ContextSizes.cbMaxSignature, char); - - winctx->maj_stat = p_MakeSignature(&winctx->context, - 0, - &InputBufferDescriptor, - 0); - - if (winctx->maj_stat == SEC_E_OK) { - hash->length = InputSecurityToken[1].cbBuffer; - hash->value = InputSecurityToken[1].pvBuffer; - } - - return winctx->maj_stat; -} - -Ssh_gss_stat ssh_gss_free_mic(Ssh_gss_buf *hash) -{ - sfree(hash->value); - return SSH_GSS_OK; -} - -#else - -/* Dummy function so this source file defines something if NO_GSSAPI - is defined. */ - -int ssh_gss_init(void) -{ - return 0; -} - -#endif diff --git a/tools/plink/winhandl.c b/tools/plink/winhandl.c deleted file mode 100644 index dbcab2b2a..000000000 --- a/tools/plink/winhandl.c +++ /dev/null @@ -1,596 +0,0 @@ -/* - * winhandl.c: Module to give Windows front ends the general - * ability to deal with consoles, pipes, serial ports, or any other - * type of data stream accessed through a Windows API HANDLE rather - * than a WinSock SOCKET. - * - * We do this by spawning a subthread to continuously try to read - * from the handle. Every time a read successfully returns some - * data, the subthread sets an event object which is picked up by - * the main thread, and the main thread then sets an event in - * return to instruct the subthread to resume reading. - * - * Output works precisely the other way round, in a second - * subthread. The output subthread should not be attempting to - * write all the time, because it hasn't always got data _to_ - * write; so the output thread waits for an event object notifying - * it to _attempt_ a write, and then it sets an event in return - * when one completes. - * - * (It's terribly annoying having to spawn a subthread for each - * direction of each handle. Technically it isn't necessary for - * serial ports, since we could use overlapped I/O within the main - * thread and wait directly on the event objects in the OVERLAPPED - * structures. However, we can't use this trick for some types of - * file handle at all - for some reason Windows restricts use of - * OVERLAPPED to files which were opened with the overlapped flag - - * and so we must use threads for those. This being the case, it's - * simplest just to use threads for everything rather than trying - * to keep track of multiple completely separate mechanisms.) - */ - -#include - -#include "putty.h" - -/* ---------------------------------------------------------------------- - * Generic definitions. - */ - -/* - * Maximum amount of backlog we will allow to build up on an input - * handle before we stop reading from it. - */ -#define MAX_BACKLOG 32768 - -struct handle_generic { - /* - * Initial fields common to both handle_input and handle_output - * structures. - * - * The three HANDLEs are set up at initialisation time and are - * thereafter read-only to both main thread and subthread. - * `moribund' is only used by the main thread; `done' is - * written by the main thread before signalling to the - * subthread. `defunct' and `busy' are used only by the main - * thread. - */ - HANDLE h; /* the handle itself */ - HANDLE ev_to_main; /* event used to signal main thread */ - HANDLE ev_from_main; /* event used to signal back to us */ - int moribund; /* are we going to kill this soon? */ - int done; /* request subthread to terminate */ - int defunct; /* has the subthread already gone? */ - int busy; /* operation currently in progress? */ - void *privdata; /* for client to remember who they are */ -}; - -/* ---------------------------------------------------------------------- - * Input threads. - */ - -/* - * Data required by an input thread. - */ -struct handle_input { - /* - * Copy of the handle_generic structure. - */ - HANDLE h; /* the handle itself */ - HANDLE ev_to_main; /* event used to signal main thread */ - HANDLE ev_from_main; /* event used to signal back to us */ - int moribund; /* are we going to kill this soon? */ - int done; /* request subthread to terminate */ - int defunct; /* has the subthread already gone? */ - int busy; /* operation currently in progress? */ - void *privdata; /* for client to remember who they are */ - - /* - * Data set at initialisation and then read-only. - */ - int flags; - - /* - * Data set by the input thread before signalling ev_to_main, - * and read by the main thread after receiving that signal. - */ - char buffer[4096]; /* the data read from the handle */ - DWORD len; /* how much data that was */ - int readerr; /* lets us know about read errors */ - - /* - * Callback function called by this module when data arrives on - * an input handle. - */ - handle_inputfn_t gotdata; -}; - -/* - * The actual thread procedure for an input thread. - */ -static DWORD WINAPI handle_input_threadfunc(void *param) -{ - struct handle_input *ctx = (struct handle_input *) param; - OVERLAPPED ovl, *povl; - HANDLE oev; - int readret, readlen; - - if (ctx->flags & HANDLE_FLAG_OVERLAPPED) { - povl = &ovl; - oev = CreateEvent(NULL, TRUE, FALSE, NULL); - } else { - povl = NULL; - } - - if (ctx->flags & HANDLE_FLAG_UNITBUFFER) - readlen = 1; - else - readlen = sizeof(ctx->buffer); - - while (1) { - if (povl) { - memset(povl, 0, sizeof(OVERLAPPED)); - povl->hEvent = oev; - } - readret = ReadFile(ctx->h, ctx->buffer,readlen, &ctx->len, povl); - if (!readret) - ctx->readerr = GetLastError(); - else - ctx->readerr = 0; - if (povl && !readret && ctx->readerr == ERROR_IO_PENDING) { - WaitForSingleObject(povl->hEvent, INFINITE); - readret = GetOverlappedResult(ctx->h, povl, &ctx->len, FALSE); - if (!readret) - ctx->readerr = GetLastError(); - else - ctx->readerr = 0; - } - - if (!readret) { - /* - * Windows apparently sends ERROR_BROKEN_PIPE when a - * pipe we're reading from is closed normally from the - * writing end. This is ludicrous; if that situation - * isn't a natural EOF, _nothing_ is. So if we get that - * particular error, we pretend it's EOF. - */ - if (ctx->readerr == ERROR_BROKEN_PIPE) - ctx->readerr = 0; - ctx->len = 0; - } - - if (readret && ctx->len == 0 && - (ctx->flags & HANDLE_FLAG_IGNOREEOF)) - continue; - - SetEvent(ctx->ev_to_main); - - if (!ctx->len) - break; - - WaitForSingleObject(ctx->ev_from_main, INFINITE); - if (ctx->done) - break; /* main thread told us to shut down */ - } - - if (povl) - CloseHandle(oev); - - return 0; -} - -/* - * This is called after a succcessful read, or from the - * `unthrottle' function. It decides whether or not to begin a new - * read operation. - */ -static void handle_throttle(struct handle_input *ctx, int backlog) -{ - if (ctx->defunct) - return; - - /* - * If there's a read operation already in progress, do nothing: - * when that completes, we'll come back here and be in a - * position to make a better decision. - */ - if (ctx->busy) - return; - - /* - * Otherwise, we must decide whether to start a new read based - * on the size of the backlog. - */ - if (backlog < MAX_BACKLOG) { - SetEvent(ctx->ev_from_main); - ctx->busy = TRUE; - } -} - -/* ---------------------------------------------------------------------- - * Output threads. - */ - -/* - * Data required by an output thread. - */ -struct handle_output { - /* - * Copy of the handle_generic structure. - */ - HANDLE h; /* the handle itself */ - HANDLE ev_to_main; /* event used to signal main thread */ - HANDLE ev_from_main; /* event used to signal back to us */ - int moribund; /* are we going to kill this soon? */ - int done; /* request subthread to terminate */ - int defunct; /* has the subthread already gone? */ - int busy; /* operation currently in progress? */ - void *privdata; /* for client to remember who they are */ - - /* - * Data set at initialisation and then read-only. - */ - int flags; - - /* - * Data set by the main thread before signalling ev_from_main, - * and read by the input thread after receiving that signal. - */ - char *buffer; /* the data to write */ - DWORD len; /* how much data there is */ - - /* - * Data set by the input thread before signalling ev_to_main, - * and read by the main thread after receiving that signal. - */ - DWORD lenwritten; /* how much data we actually wrote */ - int writeerr; /* return value from WriteFile */ - - /* - * Data only ever read or written by the main thread. - */ - bufchain queued_data; /* data still waiting to be written */ - - /* - * Callback function called when the backlog in the bufchain - * drops. - */ - handle_outputfn_t sentdata; -}; - -static DWORD WINAPI handle_output_threadfunc(void *param) -{ - struct handle_output *ctx = (struct handle_output *) param; - OVERLAPPED ovl, *povl; - HANDLE oev; - int writeret; - - if (ctx->flags & HANDLE_FLAG_OVERLAPPED) { - povl = &ovl; - oev = CreateEvent(NULL, TRUE, FALSE, NULL); - } else { - povl = NULL; - } - - while (1) { - WaitForSingleObject(ctx->ev_from_main, INFINITE); - if (ctx->done) { - SetEvent(ctx->ev_to_main); - break; - } - if (povl) { - memset(povl, 0, sizeof(OVERLAPPED)); - povl->hEvent = oev; - } - - writeret = WriteFile(ctx->h, ctx->buffer, ctx->len, - &ctx->lenwritten, povl); - if (!writeret) - ctx->writeerr = GetLastError(); - else - ctx->writeerr = 0; - if (povl && !writeret && GetLastError() == ERROR_IO_PENDING) { - writeret = GetOverlappedResult(ctx->h, povl, - &ctx->lenwritten, TRUE); - if (!writeret) - ctx->writeerr = GetLastError(); - else - ctx->writeerr = 0; - } - - SetEvent(ctx->ev_to_main); - if (!writeret) - break; - } - - if (povl) - CloseHandle(oev); - - return 0; -} - -static void handle_try_output(struct handle_output *ctx) -{ - void *senddata; - int sendlen; - - if (!ctx->busy && bufchain_size(&ctx->queued_data)) { - bufchain_prefix(&ctx->queued_data, &senddata, &sendlen); - ctx->buffer = senddata; - ctx->len = sendlen; - SetEvent(ctx->ev_from_main); - ctx->busy = TRUE; - } -} - -/* ---------------------------------------------------------------------- - * Unified code handling both input and output threads. - */ - -struct handle { - int output; - union { - struct handle_generic g; - struct handle_input i; - struct handle_output o; - } u; -}; - -static tree234 *handles_by_evtomain; - -static int handle_cmp_evtomain(void *av, void *bv) -{ - struct handle *a = (struct handle *)av; - struct handle *b = (struct handle *)bv; - - if ((unsigned)a->u.g.ev_to_main < (unsigned)b->u.g.ev_to_main) - return -1; - else if ((unsigned)a->u.g.ev_to_main > (unsigned)b->u.g.ev_to_main) - return +1; - else - return 0; -} - -static int handle_find_evtomain(void *av, void *bv) -{ - HANDLE *a = (HANDLE *)av; - struct handle *b = (struct handle *)bv; - - if ((unsigned)*a < (unsigned)b->u.g.ev_to_main) - return -1; - else if ((unsigned)*a > (unsigned)b->u.g.ev_to_main) - return +1; - else - return 0; -} - -struct handle *handle_input_new(HANDLE handle, handle_inputfn_t gotdata, - void *privdata, int flags) -{ - struct handle *h = snew(struct handle); - DWORD in_threadid; /* required for Win9x */ - - h->output = FALSE; - h->u.i.h = handle; - h->u.i.ev_to_main = CreateEvent(NULL, FALSE, FALSE, NULL); - h->u.i.ev_from_main = CreateEvent(NULL, FALSE, FALSE, NULL); - h->u.i.gotdata = gotdata; - h->u.i.defunct = FALSE; - h->u.i.moribund = FALSE; - h->u.i.done = FALSE; - h->u.i.privdata = privdata; - h->u.i.flags = flags; - - if (!handles_by_evtomain) - handles_by_evtomain = newtree234(handle_cmp_evtomain); - add234(handles_by_evtomain, h); - - CreateThread(NULL, 0, handle_input_threadfunc, - &h->u.i, 0, &in_threadid); - h->u.i.busy = TRUE; - - return h; -} - -struct handle *handle_output_new(HANDLE handle, handle_outputfn_t sentdata, - void *privdata, int flags) -{ - struct handle *h = snew(struct handle); - DWORD out_threadid; /* required for Win9x */ - - h->output = TRUE; - h->u.o.h = handle; - h->u.o.ev_to_main = CreateEvent(NULL, FALSE, FALSE, NULL); - h->u.o.ev_from_main = CreateEvent(NULL, FALSE, FALSE, NULL); - h->u.o.busy = FALSE; - h->u.o.defunct = FALSE; - h->u.o.moribund = FALSE; - h->u.o.done = FALSE; - h->u.o.privdata = privdata; - bufchain_init(&h->u.o.queued_data); - h->u.o.sentdata = sentdata; - h->u.o.flags = flags; - - if (!handles_by_evtomain) - handles_by_evtomain = newtree234(handle_cmp_evtomain); - add234(handles_by_evtomain, h); - - CreateThread(NULL, 0, handle_output_threadfunc, - &h->u.o, 0, &out_threadid); - - return h; -} - -int handle_write(struct handle *h, const void *data, int len) -{ - assert(h->output); - bufchain_add(&h->u.o.queued_data, data, len); - handle_try_output(&h->u.o); - return bufchain_size(&h->u.o.queued_data); -} - -HANDLE *handle_get_events(int *nevents) -{ - HANDLE *ret; - struct handle *h; - int i, n, size; - - /* - * Go through our tree counting the handle objects currently - * engaged in useful activity. - */ - ret = NULL; - n = size = 0; - if (handles_by_evtomain) { - for (i = 0; (h = index234(handles_by_evtomain, i)) != NULL; i++) { - if (h->u.g.busy) { - if (n >= size) { - size += 32; - ret = sresize(ret, size, HANDLE); - } - ret[n++] = h->u.g.ev_to_main; - } - } - } - - *nevents = n; - return ret; -} - -static void handle_destroy(struct handle *h) -{ - if (h->output) - bufchain_clear(&h->u.o.queued_data); - CloseHandle(h->u.g.ev_from_main); - CloseHandle(h->u.g.ev_to_main); - del234(handles_by_evtomain, h); - sfree(h); -} - -void handle_free(struct handle *h) -{ - /* - * If the handle is currently busy, we cannot immediately free - * it. Instead we must wait until it's finished its current - * operation, because otherwise the subthread will write to - * invalid memory after we free its context from under it. - */ - assert(h && !h->u.g.moribund); - if (h->u.g.busy) { - /* - * Just set the moribund flag, which will be noticed next - * time an operation completes. - */ - h->u.g.moribund = TRUE; - } else if (h->u.g.defunct) { - /* - * There isn't even a subthread; we can go straight to - * handle_destroy. - */ - handle_destroy(h); - } else { - /* - * The subthread is alive but not busy, so we now signal it - * to die. Set the moribund flag to indicate that it will - * want destroying after that. - */ - h->u.g.moribund = TRUE; - h->u.g.done = TRUE; - h->u.g.busy = TRUE; - SetEvent(h->u.g.ev_from_main); - } -} - -void handle_got_event(HANDLE event) -{ - struct handle *h; - - assert(handles_by_evtomain); - h = find234(handles_by_evtomain, &event, handle_find_evtomain); - if (!h) { - /* - * This isn't an error condition. If two or more event - * objects were signalled during the same select operation, - * and processing of the first caused the second handle to - * be closed, then it will sometimes happen that we receive - * an event notification here for a handle which is already - * deceased. In that situation we simply do nothing. - */ - return; - } - - if (h->u.g.moribund) { - /* - * A moribund handle is already treated as dead from the - * external user's point of view, so do nothing with the - * actual event. Just signal the thread to die if - * necessary, or destroy the handle if not. - */ - if (h->u.g.done) { - handle_destroy(h); - } else { - h->u.g.done = TRUE; - h->u.g.busy = TRUE; - SetEvent(h->u.g.ev_from_main); - } - return; - } - - if (!h->output) { - int backlog; - - h->u.i.busy = FALSE; - - /* - * A signal on an input handle means data has arrived. - */ - if (h->u.i.len == 0) { - /* - * EOF, or (nearly equivalently) read error. - */ - h->u.i.gotdata(h, NULL, -h->u.i.readerr); - h->u.i.defunct = TRUE; - } else { - backlog = h->u.i.gotdata(h, h->u.i.buffer, h->u.i.len); - handle_throttle(&h->u.i, backlog); - } - } else { - h->u.o.busy = FALSE; - - /* - * A signal on an output handle means we have completed a - * write. Call the callback to indicate that the output - * buffer size has decreased, or to indicate an error. - */ - if (h->u.o.writeerr) { - /* - * Write error. Send a negative value to the callback, - * and mark the thread as defunct (because the output - * thread is terminating by now). - */ - h->u.o.sentdata(h, -h->u.o.writeerr); - h->u.o.defunct = TRUE; - } else { - bufchain_consume(&h->u.o.queued_data, h->u.o.lenwritten); - h->u.o.sentdata(h, bufchain_size(&h->u.o.queued_data)); - handle_try_output(&h->u.o); - } - } -} - -void handle_unthrottle(struct handle *h, int backlog) -{ - assert(!h->output); - handle_throttle(&h->u.i, backlog); -} - -int handle_backlog(struct handle *h) -{ - assert(h->output); - return bufchain_size(&h->u.o.queued_data); -} - -void *handle_get_privdata(struct handle *h) -{ - return h->u.g.privdata; -} diff --git a/tools/plink/winhelp.h b/tools/plink/winhelp.h deleted file mode 100644 index 95cfaba15..000000000 --- a/tools/plink/winhelp.h +++ /dev/null @@ -1,182 +0,0 @@ -/* - * winhelp.h - define Windows Help context names. - * Each definition has the form "winhelp-topic:halibut-topic", where: - * - "winhelp-topic" matches up with the \cfg{winhelp-topic} directives - * in the Halibut source, and is used for WinHelp; - * - "halibut-topic" matches up with the Halibut keywords in the source, - * and is used for HTML Help. - */ - -/* Maximum length for WINHELP_CTX_foo strings */ -#define WINHELP_CTX_MAXLEN 80 - -/* These are used in the cross-platform configuration dialog code. */ - -#define HELPCTX(x) P(WINHELP_CTX_ ## x) - -#define WINHELP_CTX_no_help NULL - -#define WINHELP_CTX_session_hostname "session.hostname:config-hostname" -#define WINHELP_CTX_session_saved "session.saved:config-saving" -#define WINHELP_CTX_session_coe "session.coe:config-closeonexit" -#define WINHELP_CTX_logging_main "logging.main:config-logging" -#define WINHELP_CTX_logging_filename "logging.filename:config-logfilename" -#define WINHELP_CTX_logging_exists "logging.exists:config-logfileexists" -#define WINHELP_CTX_logging_flush "logging.flush:config-logflush" -#define WINHELP_CTX_logging_ssh_omit_password "logging.ssh.omitpassword:config-logssh" -#define WINHELP_CTX_logging_ssh_omit_data "logging.ssh.omitdata:config-logssh" -#define WINHELP_CTX_keyboard_backspace "keyboard.backspace:config-backspace" -#define WINHELP_CTX_keyboard_homeend "keyboard.homeend:config-homeend" -#define WINHELP_CTX_keyboard_funkeys "keyboard.funkeys:config-funkeys" -#define WINHELP_CTX_keyboard_appkeypad "keyboard.appkeypad:config-appkeypad" -#define WINHELP_CTX_keyboard_appcursor "keyboard.appcursor:config-appcursor" -#define WINHELP_CTX_keyboard_nethack "keyboard.nethack:config-nethack" -#define WINHELP_CTX_keyboard_compose "keyboard.compose:config-compose" -#define WINHELP_CTX_keyboard_ctrlalt "keyboard.ctrlalt:config-ctrlalt" -#define WINHELP_CTX_features_application "features.application:config-features-application" -#define WINHELP_CTX_features_mouse "features.mouse:config-features-mouse" -#define WINHELP_CTX_features_resize "features.resize:config-features-resize" -#define WINHELP_CTX_features_altscreen "features.altscreen:config-features-altscreen" -#define WINHELP_CTX_features_retitle "features.retitle:config-features-retitle" -#define WINHELP_CTX_features_qtitle "features.qtitle:config-features-qtitle" -#define WINHELP_CTX_features_dbackspace "features.dbackspace:config-features-dbackspace" -#define WINHELP_CTX_features_charset "features.charset:config-features-charset" -#define WINHELP_CTX_features_arabicshaping "features.arabicshaping:config-features-shaping" -#define WINHELP_CTX_features_bidi "features.bidi:config-features-bidi" -#define WINHELP_CTX_terminal_autowrap "terminal.autowrap:config-autowrap" -#define WINHELP_CTX_terminal_decom "terminal.decom:config-decom" -#define WINHELP_CTX_terminal_lfhascr "terminal.lfhascr:config-crlf" -#define WINHELP_CTX_terminal_crhaslf "terminal.crhaslf:config-lfcr" -#define WINHELP_CTX_terminal_bce "terminal.bce:config-erase" -#define WINHELP_CTX_terminal_blink "terminal.blink:config-blink" -#define WINHELP_CTX_terminal_answerback "terminal.answerback:config-answerback" -#define WINHELP_CTX_terminal_localecho "terminal.localecho:config-localecho" -#define WINHELP_CTX_terminal_localedit "terminal.localedit:config-localedit" -#define WINHELP_CTX_terminal_printing "terminal.printing:config-printing" -#define WINHELP_CTX_bell_style "bell.style:config-bellstyle" -#define WINHELP_CTX_bell_taskbar "bell.taskbar:config-belltaskbar" -#define WINHELP_CTX_bell_overload "bell.overload:config-bellovl" -#define WINHELP_CTX_window_size "window.size:config-winsize" -#define WINHELP_CTX_window_resize "window.resize:config-winsizelock" -#define WINHELP_CTX_window_scrollback "window.scrollback:config-scrollback" -#define WINHELP_CTX_window_erased "window.erased:config-erasetoscrollback" -#define WINHELP_CTX_behaviour_closewarn "behaviour.closewarn:config-warnonclose" -#define WINHELP_CTX_behaviour_altf4 "behaviour.altf4:config-altf4" -#define WINHELP_CTX_behaviour_altspace "behaviour.altspace:config-altspace" -#define WINHELP_CTX_behaviour_altonly "behaviour.altonly:config-altonly" -#define WINHELP_CTX_behaviour_alwaysontop "behaviour.alwaysontop:config-alwaysontop" -#define WINHELP_CTX_behaviour_altenter "behaviour.altenter:config-fullscreen" -#define WINHELP_CTX_appearance_cursor "appearance.cursor:config-cursor" -#define WINHELP_CTX_appearance_font "appearance.font:config-font" -#define WINHELP_CTX_appearance_title "appearance.title:config-title" -#define WINHELP_CTX_appearance_hidemouse "appearance.hidemouse:config-mouseptr" -#define WINHELP_CTX_appearance_border "appearance.border:config-winborder" -#define WINHELP_CTX_connection_termtype "connection.termtype:config-termtype" -#define WINHELP_CTX_connection_termspeed "connection.termspeed:config-termspeed" -#define WINHELP_CTX_connection_username "connection.username:config-username" -#define WINHELP_CTX_connection_username_from_env "connection.usernamefromenv:config-username-from-env" -#define WINHELP_CTX_connection_keepalive "connection.keepalive:config-keepalive" -#define WINHELP_CTX_connection_nodelay "connection.nodelay:config-nodelay" -#define WINHELP_CTX_connection_ipversion "connection.ipversion:config-address-family" -#define WINHELP_CTX_connection_tcpkeepalive "connection.tcpkeepalive:config-tcp-keepalives" -#define WINHELP_CTX_connection_loghost "connection.loghost:config-loghost" -#define WINHELP_CTX_proxy_type "proxy.type:config-proxy-type" -#define WINHELP_CTX_proxy_main "proxy.main:config-proxy" -#define WINHELP_CTX_proxy_exclude "proxy.exclude:config-proxy-exclude" -#define WINHELP_CTX_proxy_dns "proxy.dns:config-proxy-dns" -#define WINHELP_CTX_proxy_auth "proxy.auth:config-proxy-auth" -#define WINHELP_CTX_proxy_command "proxy.command:config-proxy-command" -#define WINHELP_CTX_telnet_environ "telnet.environ:config-environ" -#define WINHELP_CTX_telnet_oldenviron "telnet.oldenviron:config-oldenviron" -#define WINHELP_CTX_telnet_passive "telnet.passive:config-ptelnet" -#define WINHELP_CTX_telnet_specialkeys "telnet.specialkeys:config-telnetkey" -#define WINHELP_CTX_telnet_newline "telnet.newline:config-telnetnl" -#define WINHELP_CTX_rlogin_localuser "rlogin.localuser:config-rlogin-localuser" -#define WINHELP_CTX_ssh_nopty "ssh.nopty:config-ssh-pty" -#define WINHELP_CTX_ssh_ttymodes "ssh.ttymodes:config-ttymodes" -#define WINHELP_CTX_ssh_noshell "ssh.noshell:config-ssh-noshell" -#define WINHELP_CTX_ssh_ciphers "ssh.ciphers:config-ssh-encryption" -#define WINHELP_CTX_ssh_protocol "ssh.protocol:config-ssh-prot" -#define WINHELP_CTX_ssh_command "ssh.command:config-command" -#define WINHELP_CTX_ssh_compress "ssh.compress:config-ssh-comp" -#define WINHELP_CTX_ssh_kexlist "ssh.kex.order:config-ssh-kex-order" -#define WINHELP_CTX_ssh_kex_repeat "ssh.kex.repeat:config-ssh-kex-rekey" -#define WINHELP_CTX_ssh_auth_bypass "ssh.auth.bypass:config-ssh-noauth" -#define WINHELP_CTX_ssh_auth_privkey "ssh.auth.privkey:config-ssh-privkey" -#define WINHELP_CTX_ssh_auth_agentfwd "ssh.auth.agentfwd:config-ssh-agentfwd" -#define WINHELP_CTX_ssh_auth_changeuser "ssh.auth.changeuser:config-ssh-changeuser" -#define WINHELP_CTX_ssh_auth_pageant "ssh.auth.pageant:config-ssh-tryagent" -#define WINHELP_CTX_ssh_auth_tis "ssh.auth.tis:config-ssh-tis" -#define WINHELP_CTX_ssh_auth_ki "ssh.auth.ki:config-ssh-ki" -#define WINHELP_CTX_selection_buttons "selection.buttons:config-mouse" -#define WINHELP_CTX_selection_shiftdrag "selection.shiftdrag:config-mouseshift" -#define WINHELP_CTX_selection_rect "selection.rect:config-rectselect" -#define WINHELP_CTX_selection_charclasses "selection.charclasses:config-charclasses" -#define WINHELP_CTX_selection_linedraw "selection.linedraw:config-linedrawpaste" -#define WINHELP_CTX_selection_rtf "selection.rtf:config-rtfpaste" -#define WINHELP_CTX_colours_ansi "colours.ansi:config-ansicolour" -#define WINHELP_CTX_colours_xterm256 "colours.xterm256:config-xtermcolour" -#define WINHELP_CTX_colours_bold "colours.bold:config-boldcolour" -#define WINHELP_CTX_colours_system "colours.system:config-syscolour" -#define WINHELP_CTX_colours_logpal "colours.logpal:config-logpalette" -#define WINHELP_CTX_colours_config "colours.config:config-colourcfg" -#define WINHELP_CTX_translation_codepage "translation.codepage:config-charset" -#define WINHELP_CTX_translation_cjk_ambig_wide "translation.cjkambigwide:config-cjk-ambig-wide" -#define WINHELP_CTX_translation_cyrillic "translation.cyrillic:config-cyr" -#define WINHELP_CTX_translation_linedraw "translation.linedraw:config-linedraw" -#define WINHELP_CTX_ssh_tunnels_x11 "ssh.tunnels.x11:config-ssh-x11" -#define WINHELP_CTX_ssh_tunnels_x11auth "ssh.tunnels.x11auth:config-ssh-x11auth" -#define WINHELP_CTX_ssh_tunnels_xauthority "ssh.tunnels.xauthority:config-ssh-xauthority" -#define WINHELP_CTX_ssh_tunnels_portfwd "ssh.tunnels.portfwd:config-ssh-portfwd" -#define WINHELP_CTX_ssh_tunnels_portfwd_localhost "ssh.tunnels.portfwd.localhost:config-ssh-portfwd-localhost" -#define WINHELP_CTX_ssh_tunnels_portfwd_ipversion "ssh.tunnels.portfwd.ipversion:config-ssh-portfwd-address-family" -#define WINHELP_CTX_ssh_bugs_ignore1 "ssh.bugs.ignore1:config-ssh-bug-ignore1" -#define WINHELP_CTX_ssh_bugs_plainpw1 "ssh.bugs.plainpw1:config-ssh-bug-plainpw1" -#define WINHELP_CTX_ssh_bugs_rsa1 "ssh.bugs.rsa1:config-ssh-bug-rsa1" -#define WINHELP_CTX_ssh_bugs_hmac2 "ssh.bugs.hmac2:config-ssh-bug-hmac2" -#define WINHELP_CTX_ssh_bugs_derivekey2 "ssh.bugs.derivekey2:config-ssh-bug-derivekey2" -#define WINHELP_CTX_ssh_bugs_rsapad2 "ssh.bugs.rsapad2:config-ssh-bug-sig" -#define WINHELP_CTX_ssh_bugs_pksessid2 "ssh.bugs.pksessid2:config-ssh-bug-pksessid2" -#define WINHELP_CTX_ssh_bugs_rekey2 "ssh.bugs.rekey2:config-ssh-bug-rekey" -#define WINHELP_CTX_ssh_bugs_maxpkt2 "ssh.bugs.maxpkt2:config-ssh-bug-maxpkt2" -#define WINHELP_CTX_serial_line "serial.line:config-serial-line" -#define WINHELP_CTX_serial_speed "serial.speed:config-serial-speed" -#define WINHELP_CTX_serial_databits "serial.databits:config-serial-databits" -#define WINHELP_CTX_serial_stopbits "serial.stopbits:config-serial-stopbits" -#define WINHELP_CTX_serial_parity "serial.parity:config-serial-parity" -#define WINHELP_CTX_serial_flow "serial.flow:config-serial-flow" - -#define WINHELP_CTX_pageant_general "pageant.general:pageant" -#define WINHELP_CTX_pageant_keylist "pageant.keylist:pageant-mainwin-keylist" -#define WINHELP_CTX_pageant_addkey "pageant.addkey:pageant-mainwin-addkey" -#define WINHELP_CTX_pageant_remkey "pageant.remkey:pageant-mainwin-remkey" -#define WINHELP_CTX_pgpfingerprints "pgpfingerprints:pgpkeys" -#define WINHELP_CTX_puttygen_general "puttygen.general:pubkey-puttygen" -#define WINHELP_CTX_puttygen_keytype "puttygen.keytype:puttygen-keytype" -#define WINHELP_CTX_puttygen_bits "puttygen.bits:puttygen-strength" -#define WINHELP_CTX_puttygen_generate "puttygen.generate:puttygen-generate" -#define WINHELP_CTX_puttygen_fingerprint "puttygen.fingerprint:puttygen-fingerprint" -#define WINHELP_CTX_puttygen_comment "puttygen.comment:puttygen-comment" -#define WINHELP_CTX_puttygen_passphrase "puttygen.passphrase:puttygen-passphrase" -#define WINHELP_CTX_puttygen_savepriv "puttygen.savepriv:puttygen-savepriv" -#define WINHELP_CTX_puttygen_savepub "puttygen.savepub:puttygen-savepub" -#define WINHELP_CTX_puttygen_pastekey "puttygen.pastekey:puttygen-pastekey" -#define WINHELP_CTX_puttygen_load "puttygen.load:puttygen-load" -#define WINHELP_CTX_puttygen_conversions "puttygen.conversions:puttygen-conversions" - -/* These are used in Windows-specific bits of the frontend. - * We (ab)use "help context identifiers" (dwContextId) to identify them. */ - -#define HELPCTXID(x) WINHELP_CTXID_ ## x - -#define WINHELP_CTXID_no_help 0 -#define WINHELP_CTX_errors_hostkey_absent "errors.hostkey.absent:errors-hostkey-absent" -#define WINHELP_CTXID_errors_hostkey_absent 1 -#define WINHELP_CTX_errors_hostkey_changed "errors.hostkey.changed:errors-hostkey-wrong" -#define WINHELP_CTXID_errors_hostkey_changed 2 -#define WINHELP_CTX_errors_cantloadkey "errors.cantloadkey:errors-cant-load-key" -#define WINHELP_CTXID_errors_cantloadkey 3 -#define WINHELP_CTX_option_cleanup "options.cleanup:using-cleanup" -#define WINHELP_CTXID_option_cleanup 4 -#define WINHELP_CTX_pgp_fingerprints "pgpfingerprints:pgpkeys" -#define WINHELP_CTXID_pgp_fingerprints 5 diff --git a/tools/plink/winmisc.c b/tools/plink/winmisc.c deleted file mode 100644 index 8ffbe77a1..000000000 --- a/tools/plink/winmisc.c +++ /dev/null @@ -1,313 +0,0 @@ -/* - * winmisc.c: miscellaneous Windows-specific things - */ - -#include -#include -#include "putty.h" - -OSVERSIONINFO osVersion; - -char *platform_get_x_display(void) { - /* We may as well check for DISPLAY in case it's useful. */ - return dupstr(getenv("DISPLAY")); -} - -Filename filename_from_str(const char *str) -{ - Filename ret; - strncpy(ret.path, str, sizeof(ret.path)); - ret.path[sizeof(ret.path)-1] = '\0'; - return ret; -} - -const char *filename_to_str(const Filename *fn) -{ - return fn->path; -} - -int filename_equal(Filename f1, Filename f2) -{ - return !strcmp(f1.path, f2.path); -} - -int filename_is_null(Filename fn) -{ - return !*fn.path; -} - -char *get_username(void) -{ - DWORD namelen; - char *user; - - namelen = 0; - if (GetUserName(NULL, &namelen) == FALSE) { - /* - * Apparently this doesn't work at least on Windows XP SP2. - * Thus assume a maximum of 256. It will fail again if it - * doesn't fit. - */ - namelen = 256; - } - - user = snewn(namelen, char); - GetUserName(user, &namelen); - - return user; -} - -BOOL init_winver(void) -{ - ZeroMemory(&osVersion, sizeof(osVersion)); - osVersion.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); - return GetVersionEx ( (OSVERSIONINFO *) &osVersion); -} - -#ifdef DEBUG -static FILE *debug_fp = NULL; -static HANDLE debug_hdl = INVALID_HANDLE_VALUE; -static int debug_got_console = 0; - -void dputs(char *buf) -{ - DWORD dw; - - if (!debug_got_console) { - if (AllocConsole()) { - debug_got_console = 1; - debug_hdl = GetStdHandle(STD_OUTPUT_HANDLE); - } - } - if (!debug_fp) { - debug_fp = fopen("debug.log", "w"); - } - - if (debug_hdl != INVALID_HANDLE_VALUE) { - WriteFile(debug_hdl, buf, strlen(buf), &dw, NULL); - } - fputs(buf, debug_fp); - fflush(debug_fp); -} -#endif - -#ifdef MINEFIELD -/* - * Minefield - a Windows equivalent for Electric Fence - */ - -#define PAGESIZE 4096 - -/* - * Design: - * - * We start by reserving as much virtual address space as Windows - * will sensibly (or not sensibly) let us have. We flag it all as - * invalid memory. - * - * Any allocation attempt is satisfied by committing one or more - * pages, with an uncommitted page on either side. The returned - * memory region is jammed up against the _end_ of the pages. - * - * Freeing anything causes instantaneous decommitment of the pages - * involved, so stale pointers are caught as soon as possible. - */ - -static int minefield_initialised = 0; -static void *minefield_region = NULL; -static long minefield_size = 0; -static long minefield_npages = 0; -static long minefield_curpos = 0; -static unsigned short *minefield_admin = NULL; -static void *minefield_pages = NULL; - -static void minefield_admin_hide(int hide) -{ - int access = hide ? PAGE_NOACCESS : PAGE_READWRITE; - VirtualProtect(minefield_admin, minefield_npages * 2, access, NULL); -} - -static void minefield_init(void) -{ - int size; - int admin_size; - int i; - - for (size = 0x40000000; size > 0; size = ((size >> 3) * 7) & ~0xFFF) { - minefield_region = VirtualAlloc(NULL, size, - MEM_RESERVE, PAGE_NOACCESS); - if (minefield_region) - break; - } - minefield_size = size; - - /* - * Firstly, allocate a section of that to be the admin block. - * We'll need a two-byte field for each page. - */ - minefield_admin = minefield_region; - minefield_npages = minefield_size / PAGESIZE; - admin_size = (minefield_npages * 2 + PAGESIZE - 1) & ~(PAGESIZE - 1); - minefield_npages = (minefield_size - admin_size) / PAGESIZE; - minefield_pages = (char *) minefield_region + admin_size; - - /* - * Commit the admin region. - */ - VirtualAlloc(minefield_admin, minefield_npages * 2, - MEM_COMMIT, PAGE_READWRITE); - - /* - * Mark all pages as unused (0xFFFF). - */ - for (i = 0; i < minefield_npages; i++) - minefield_admin[i] = 0xFFFF; - - /* - * Hide the admin region. - */ - minefield_admin_hide(1); - - minefield_initialised = 1; -} - -static void minefield_bomb(void) -{ - div(1, *(int *) minefield_pages); -} - -static void *minefield_alloc(int size) -{ - int npages; - int pos, lim, region_end, region_start; - int start; - int i; - - npages = (size + PAGESIZE - 1) / PAGESIZE; - - minefield_admin_hide(0); - - /* - * Search from current position until we find a contiguous - * bunch of npages+2 unused pages. - */ - pos = minefield_curpos; - lim = minefield_npages; - while (1) { - /* Skip over used pages. */ - while (pos < lim && minefield_admin[pos] != 0xFFFF) - pos++; - /* Count unused pages. */ - start = pos; - while (pos < lim && pos - start < npages + 2 && - minefield_admin[pos] == 0xFFFF) - pos++; - if (pos - start == npages + 2) - break; - /* If we've reached the limit, reset the limit or stop. */ - if (pos >= lim) { - if (lim == minefield_npages) { - /* go round and start again at zero */ - lim = minefield_curpos; - pos = 0; - } else { - minefield_admin_hide(1); - return NULL; - } - } - } - - minefield_curpos = pos - 1; - - /* - * We have npages+2 unused pages starting at start. We leave - * the first and last of these alone and use the rest. - */ - region_end = (start + npages + 1) * PAGESIZE; - region_start = region_end - size; - /* FIXME: could align here if we wanted */ - - /* - * Update the admin region. - */ - for (i = start + 2; i < start + npages + 1; i++) - minefield_admin[i] = 0xFFFE; /* used but no region starts here */ - minefield_admin[start + 1] = region_start % PAGESIZE; - - minefield_admin_hide(1); - - VirtualAlloc((char *) minefield_pages + region_start, size, - MEM_COMMIT, PAGE_READWRITE); - return (char *) minefield_pages + region_start; -} - -static void minefield_free(void *ptr) -{ - int region_start, i, j; - - minefield_admin_hide(0); - - region_start = (char *) ptr - (char *) minefield_pages; - i = region_start / PAGESIZE; - if (i < 0 || i >= minefield_npages || - minefield_admin[i] != region_start % PAGESIZE) - minefield_bomb(); - for (j = i; j < minefield_npages && minefield_admin[j] != 0xFFFF; j++) { - minefield_admin[j] = 0xFFFF; - } - - VirtualFree(ptr, j * PAGESIZE - region_start, MEM_DECOMMIT); - - minefield_admin_hide(1); -} - -static int minefield_get_size(void *ptr) -{ - int region_start, i, j; - - minefield_admin_hide(0); - - region_start = (char *) ptr - (char *) minefield_pages; - i = region_start / PAGESIZE; - if (i < 0 || i >= minefield_npages || - minefield_admin[i] != region_start % PAGESIZE) - minefield_bomb(); - for (j = i; j < minefield_npages && minefield_admin[j] != 0xFFFF; j++); - - minefield_admin_hide(1); - - return j * PAGESIZE - region_start; -} - -void *minefield_c_malloc(size_t size) -{ - if (!minefield_initialised) - minefield_init(); - return minefield_alloc(size); -} - -void minefield_c_free(void *p) -{ - if (!minefield_initialised) - minefield_init(); - minefield_free(p); -} - -/* - * realloc _always_ moves the chunk, for rapid detection of code - * that assumes it won't. - */ -void *minefield_c_realloc(void *p, size_t size) -{ - size_t oldsize; - void *q; - if (!minefield_initialised) - minefield_init(); - q = minefield_alloc(size); - oldsize = minefield_get_size(p); - memcpy(q, p, (oldsize < size ? oldsize : size)); - minefield_free(p); - return q; -} - -#endif /* MINEFIELD */ diff --git a/tools/plink/winnet.c b/tools/plink/winnet.c deleted file mode 100644 index 59f3774e0..000000000 --- a/tools/plink/winnet.c +++ /dev/null @@ -1,1713 +0,0 @@ -/* - * Windows networking abstraction. - * - * For the IPv6 code in here I am indebted to Jeroen Massar and - * unfix.org. - */ - -#include -#include -#include - -#define DEFINE_PLUG_METHOD_MACROS -#include "putty.h" -#include "network.h" -#include "tree234.h" - -#include - -#ifndef NO_IPV6 -const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT; -const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT; -#endif - -#define ipv4_is_loopback(addr) \ - ((p_ntohl(addr.s_addr) & 0xFF000000L) == 0x7F000000L) - -/* - * We used to typedef struct Socket_tag *Socket. - * - * Since we have made the networking abstraction slightly more - * abstract, Socket no longer means a tcp socket (it could mean - * an ssl socket). So now we must use Actual_Socket when we know - * we are talking about a tcp socket. - */ -typedef struct Socket_tag *Actual_Socket; - -/* - * Mutable state that goes with a SockAddr: stores information - * about where in the list of candidate IP(v*) addresses we've - * currently got to. - */ -typedef struct SockAddrStep_tag SockAddrStep; -struct SockAddrStep_tag { -#ifndef NO_IPV6 - struct addrinfo *ai; /* steps along addr->ais */ -#endif - int curraddr; -}; - -struct Socket_tag { - const struct socket_function_table *fn; - /* the above variable absolutely *must* be the first in this structure */ - char *error; - SOCKET s; - Plug plug; - void *private_ptr; - bufchain output_data; - int connected; - int writable; - int frozen; /* this causes readability notifications to be ignored */ - int frozen_readable; /* this means we missed at least one readability - * notification while we were frozen */ - int localhost_only; /* for listening sockets */ - char oobdata[1]; - int sending_oob; - int oobinline, nodelay, keepalive, privport; - SockAddr addr; - SockAddrStep step; - int port; - int pending_error; /* in case send() returns error */ - /* - * We sometimes need pairs of Socket structures to be linked: - * if we are listening on the same IPv6 and v4 port, for - * example. So here we define `parent' and `child' pointers to - * track this link. - */ - Actual_Socket parent, child; -}; - -struct SockAddr_tag { - int refcount; - char *error; - int resolved; -#ifndef NO_IPV6 - struct addrinfo *ais; /* Addresses IPv6 style. */ -#endif - unsigned long *addresses; /* Addresses IPv4 style. */ - int naddresses; - char hostname[512]; /* Store an unresolved host name. */ -}; - -/* - * Which address family this address belongs to. AF_INET for IPv4; - * AF_INET6 for IPv6; AF_UNSPEC indicates that name resolution has - * not been done and a simple host name is held in this SockAddr - * structure. - */ -#ifndef NO_IPV6 -#define SOCKADDR_FAMILY(addr, step) \ - (!(addr)->resolved ? AF_UNSPEC : \ - (step).ai ? (step).ai->ai_family : AF_INET) -#else -#define SOCKADDR_FAMILY(addr, step) \ - (!(addr)->resolved ? AF_UNSPEC : AF_INET) -#endif - -/* - * Start a SockAddrStep structure to step through multiple - * addresses. - */ -#ifndef NO_IPV6 -#define START_STEP(addr, step) \ - ((step).ai = (addr)->ais, (step).curraddr = 0) -#else -#define START_STEP(addr, step) \ - ((step).curraddr = 0) -#endif - -static tree234 *sktree; - -static int cmpfortree(void *av, void *bv) -{ - Actual_Socket a = (Actual_Socket) av, b = (Actual_Socket) bv; - unsigned long as = (unsigned long) a->s, bs = (unsigned long) b->s; - if (as < bs) - return -1; - if (as > bs) - return +1; - if (a < b) - return -1; - if (a > b) - return +1; - return 0; -} - -static int cmpforsearch(void *av, void *bv) -{ - Actual_Socket b = (Actual_Socket) bv; - unsigned long as = (unsigned long) av, bs = (unsigned long) b->s; - if (as < bs) - return -1; - if (as > bs) - return +1; - return 0; -} - -#define NOTHING -#define DECL_WINSOCK_FUNCTION(linkage, rettype, name, params) \ - typedef rettype (WINAPI *t_##name) params; \ - linkage t_##name p_##name -#define GET_WINSOCK_FUNCTION(module, name) \ - p_##name = module ? (t_##name) GetProcAddress(module, #name) : NULL - -DECL_WINSOCK_FUNCTION(NOTHING, int, WSAAsyncSelect, - (SOCKET, HWND, u_int, long)); -DECL_WINSOCK_FUNCTION(NOTHING, int, WSAEventSelect, (SOCKET, WSAEVENT, long)); -DECL_WINSOCK_FUNCTION(NOTHING, int, select, - (int, fd_set FAR *, fd_set FAR *, - fd_set FAR *, const struct timeval FAR *)); -DECL_WINSOCK_FUNCTION(NOTHING, int, WSAGetLastError, (void)); -DECL_WINSOCK_FUNCTION(NOTHING, int, WSAEnumNetworkEvents, - (SOCKET, WSAEVENT, LPWSANETWORKEVENTS)); -DECL_WINSOCK_FUNCTION(static, int, WSAStartup, (WORD, LPWSADATA)); -DECL_WINSOCK_FUNCTION(static, int, WSACleanup, (void)); -DECL_WINSOCK_FUNCTION(static, int, closesocket, (SOCKET)); -DECL_WINSOCK_FUNCTION(static, u_long, ntohl, (u_long)); -DECL_WINSOCK_FUNCTION(static, u_long, htonl, (u_long)); -DECL_WINSOCK_FUNCTION(static, u_short, htons, (u_short)); -DECL_WINSOCK_FUNCTION(static, u_short, ntohs, (u_short)); -DECL_WINSOCK_FUNCTION(static, int, gethostname, (char *, int)); -DECL_WINSOCK_FUNCTION(static, struct hostent FAR *, gethostbyname, - (const char FAR *)); -DECL_WINSOCK_FUNCTION(static, struct servent FAR *, getservbyname, - (const char FAR *, const char FAR *)); -DECL_WINSOCK_FUNCTION(static, unsigned long, inet_addr, (const char FAR *)); -DECL_WINSOCK_FUNCTION(static, char FAR *, inet_ntoa, (struct in_addr)); -DECL_WINSOCK_FUNCTION(static, int, connect, - (SOCKET, const struct sockaddr FAR *, int)); -DECL_WINSOCK_FUNCTION(static, int, bind, - (SOCKET, const struct sockaddr FAR *, int)); -DECL_WINSOCK_FUNCTION(static, int, setsockopt, - (SOCKET, int, int, const char FAR *, int)); -DECL_WINSOCK_FUNCTION(static, SOCKET, socket, (int, int, int)); -DECL_WINSOCK_FUNCTION(static, int, listen, (SOCKET, int)); -DECL_WINSOCK_FUNCTION(static, int, send, (SOCKET, const char FAR *, int, int)); -DECL_WINSOCK_FUNCTION(static, int, ioctlsocket, - (SOCKET, long, u_long FAR *)); -DECL_WINSOCK_FUNCTION(static, SOCKET, accept, - (SOCKET, struct sockaddr FAR *, int FAR *)); -DECL_WINSOCK_FUNCTION(static, int, recv, (SOCKET, char FAR *, int, int)); -DECL_WINSOCK_FUNCTION(static, int, WSAIoctl, - (SOCKET, DWORD, LPVOID, DWORD, LPVOID, DWORD, - LPDWORD, LPWSAOVERLAPPED, - LPWSAOVERLAPPED_COMPLETION_ROUTINE)); -#ifndef NO_IPV6 -DECL_WINSOCK_FUNCTION(static, int, getaddrinfo, - (const char *nodename, const char *servname, - const struct addrinfo *hints, struct addrinfo **res)); -DECL_WINSOCK_FUNCTION(static, void, freeaddrinfo, (struct addrinfo *res)); -DECL_WINSOCK_FUNCTION(static, int, getnameinfo, - (const struct sockaddr FAR * sa, socklen_t salen, - char FAR * host, size_t hostlen, char FAR * serv, - size_t servlen, int flags)); -DECL_WINSOCK_FUNCTION(static, char *, gai_strerror, (int ecode)); -DECL_WINSOCK_FUNCTION(static, int, WSAAddressToStringA, - (LPSOCKADDR, DWORD, LPWSAPROTOCOL_INFO, - LPTSTR, LPDWORD)); -#endif - -static HMODULE winsock_module = NULL; -static WSADATA wsadata; -#ifndef NO_IPV6 -static HMODULE winsock2_module = NULL; -static HMODULE wship6_module = NULL; -#endif - -int sk_startup(int hi, int lo) -{ - WORD winsock_ver; - - winsock_ver = MAKEWORD(hi, lo); - - if (p_WSAStartup(winsock_ver, &wsadata)) { - return FALSE; - } - - if (LOBYTE(wsadata.wVersion) != LOBYTE(winsock_ver)) { - return FALSE; - } - -#ifdef NET_SETUP_DIAGNOSTICS - { - char buf[80]; - sprintf(buf, "Using WinSock %d.%d", hi, lo); - logevent(NULL, buf); - } -#endif - return TRUE; -} - -void sk_init(void) -{ -#ifndef NO_IPV6 - winsock2_module = -#endif - winsock_module = LoadLibrary("WS2_32.DLL"); - if (!winsock_module) { - winsock_module = LoadLibrary("WSOCK32.DLL"); - } - if (!winsock_module) - fatalbox("Unable to load any WinSock library"); - -#ifndef NO_IPV6 - /* Check if we have getaddrinfo in Winsock */ - if (GetProcAddress(winsock_module, "getaddrinfo") != NULL) { -#ifdef NET_SETUP_DIAGNOSTICS - logevent(NULL, "Native WinSock IPv6 support detected"); -#endif - GET_WINSOCK_FUNCTION(winsock_module, getaddrinfo); - GET_WINSOCK_FUNCTION(winsock_module, freeaddrinfo); - GET_WINSOCK_FUNCTION(winsock_module, getnameinfo); - GET_WINSOCK_FUNCTION(winsock_module, gai_strerror); - } else { - /* Fall back to wship6.dll for Windows 2000 */ - wship6_module = LoadLibrary("wship6.dll"); - if (wship6_module) { -#ifdef NET_SETUP_DIAGNOSTICS - logevent(NULL, "WSH IPv6 support detected"); -#endif - GET_WINSOCK_FUNCTION(wship6_module, getaddrinfo); - GET_WINSOCK_FUNCTION(wship6_module, freeaddrinfo); - GET_WINSOCK_FUNCTION(wship6_module, getnameinfo); - GET_WINSOCK_FUNCTION(wship6_module, gai_strerror); - } else { -#ifdef NET_SETUP_DIAGNOSTICS - logevent(NULL, "No IPv6 support detected"); -#endif - } - } - GET_WINSOCK_FUNCTION(winsock2_module, WSAAddressToStringA); -#else -#ifdef NET_SETUP_DIAGNOSTICS - logevent(NULL, "PuTTY was built without IPv6 support"); -#endif -#endif - - GET_WINSOCK_FUNCTION(winsock_module, WSAAsyncSelect); - GET_WINSOCK_FUNCTION(winsock_module, WSAEventSelect); - GET_WINSOCK_FUNCTION(winsock_module, select); - GET_WINSOCK_FUNCTION(winsock_module, WSAGetLastError); - GET_WINSOCK_FUNCTION(winsock_module, WSAEnumNetworkEvents); - GET_WINSOCK_FUNCTION(winsock_module, WSAStartup); - GET_WINSOCK_FUNCTION(winsock_module, WSACleanup); - GET_WINSOCK_FUNCTION(winsock_module, closesocket); - GET_WINSOCK_FUNCTION(winsock_module, ntohl); - GET_WINSOCK_FUNCTION(winsock_module, htonl); - GET_WINSOCK_FUNCTION(winsock_module, htons); - GET_WINSOCK_FUNCTION(winsock_module, ntohs); - GET_WINSOCK_FUNCTION(winsock_module, gethostname); - GET_WINSOCK_FUNCTION(winsock_module, gethostbyname); - GET_WINSOCK_FUNCTION(winsock_module, getservbyname); - GET_WINSOCK_FUNCTION(winsock_module, inet_addr); - GET_WINSOCK_FUNCTION(winsock_module, inet_ntoa); - GET_WINSOCK_FUNCTION(winsock_module, connect); - GET_WINSOCK_FUNCTION(winsock_module, bind); - GET_WINSOCK_FUNCTION(winsock_module, setsockopt); - GET_WINSOCK_FUNCTION(winsock_module, socket); - GET_WINSOCK_FUNCTION(winsock_module, listen); - GET_WINSOCK_FUNCTION(winsock_module, send); - GET_WINSOCK_FUNCTION(winsock_module, ioctlsocket); - GET_WINSOCK_FUNCTION(winsock_module, accept); - GET_WINSOCK_FUNCTION(winsock_module, recv); - GET_WINSOCK_FUNCTION(winsock_module, WSAIoctl); - - /* Try to get the best WinSock version we can get */ - if (!sk_startup(2,2) && - !sk_startup(2,0) && - !sk_startup(1,1)) { - fatalbox("Unable to initialise WinSock"); - } - - sktree = newtree234(cmpfortree); -} - -void sk_cleanup(void) -{ - Actual_Socket s; - int i; - - if (sktree) { - for (i = 0; (s = index234(sktree, i)) != NULL; i++) { - p_closesocket(s->s); - } - freetree234(sktree); - sktree = NULL; - } - - p_WSACleanup(); - if (winsock_module) - FreeLibrary(winsock_module); -#ifndef NO_IPV6 - if (wship6_module) - FreeLibrary(wship6_module); -#endif -} - -char *winsock_error_string(int error) -{ - switch (error) { - case WSAEACCES: - return "Network error: Permission denied"; - case WSAEADDRINUSE: - return "Network error: Address already in use"; - case WSAEADDRNOTAVAIL: - return "Network error: Cannot assign requested address"; - case WSAEAFNOSUPPORT: - return - "Network error: Address family not supported by protocol family"; - case WSAEALREADY: - return "Network error: Operation already in progress"; - case WSAECONNABORTED: - return "Network error: Software caused connection abort"; - case WSAECONNREFUSED: - return "Network error: Connection refused"; - case WSAECONNRESET: - return "Network error: Connection reset by peer"; - case WSAEDESTADDRREQ: - return "Network error: Destination address required"; - case WSAEFAULT: - return "Network error: Bad address"; - case WSAEHOSTDOWN: - return "Network error: Host is down"; - case WSAEHOSTUNREACH: - return "Network error: No route to host"; - case WSAEINPROGRESS: - return "Network error: Operation now in progress"; - case WSAEINTR: - return "Network error: Interrupted function call"; - case WSAEINVAL: - return "Network error: Invalid argument"; - case WSAEISCONN: - return "Network error: Socket is already connected"; - case WSAEMFILE: - return "Network error: Too many open files"; - case WSAEMSGSIZE: - return "Network error: Message too long"; - case WSAENETDOWN: - return "Network error: Network is down"; - case WSAENETRESET: - return "Network error: Network dropped connection on reset"; - case WSAENETUNREACH: - return "Network error: Network is unreachable"; - case WSAENOBUFS: - return "Network error: No buffer space available"; - case WSAENOPROTOOPT: - return "Network error: Bad protocol option"; - case WSAENOTCONN: - return "Network error: Socket is not connected"; - case WSAENOTSOCK: - return "Network error: Socket operation on non-socket"; - case WSAEOPNOTSUPP: - return "Network error: Operation not supported"; - case WSAEPFNOSUPPORT: - return "Network error: Protocol family not supported"; - case WSAEPROCLIM: - return "Network error: Too many processes"; - case WSAEPROTONOSUPPORT: - return "Network error: Protocol not supported"; - case WSAEPROTOTYPE: - return "Network error: Protocol wrong type for socket"; - case WSAESHUTDOWN: - return "Network error: Cannot send after socket shutdown"; - case WSAESOCKTNOSUPPORT: - return "Network error: Socket type not supported"; - case WSAETIMEDOUT: - return "Network error: Connection timed out"; - case WSAEWOULDBLOCK: - return "Network error: Resource temporarily unavailable"; - case WSAEDISCON: - return "Network error: Graceful shutdown in progress"; - default: - return "Unknown network error"; - } -} - -SockAddr sk_namelookup(const char *host, char **canonicalname, - int address_family) -{ - SockAddr ret = snew(struct SockAddr_tag); - unsigned long a; - struct hostent *h = NULL; - char realhost[8192]; - int hint_family; - int err; - - /* Default to IPv4. */ - hint_family = (address_family == ADDRTYPE_IPV4 ? AF_INET : -#ifndef NO_IPV6 - address_family == ADDRTYPE_IPV6 ? AF_INET6 : -#endif - AF_UNSPEC); - - /* Clear the structure and default to IPv4. */ - memset(ret, 0, sizeof(struct SockAddr_tag)); -#ifndef NO_IPV6 - ret->ais = NULL; -#endif - ret->addresses = NULL; - ret->resolved = FALSE; - ret->refcount = 1; - *realhost = '\0'; - - if ((a = p_inet_addr(host)) == (unsigned long) INADDR_NONE) { -#ifndef NO_IPV6 - /* - * Use getaddrinfo when it's available - */ - if (p_getaddrinfo) { - struct addrinfo hints; -#ifdef NET_SETUP_DIAGNOSTICS - logevent(NULL, "Using getaddrinfo() for resolving"); -#endif - memset(&hints, 0, sizeof(hints)); - hints.ai_family = hint_family; - hints.ai_flags = AI_CANONNAME; - if ((err = p_getaddrinfo(host, NULL, &hints, &ret->ais)) == 0) - ret->resolved = TRUE; - } else -#endif - { -#ifdef NET_SETUP_DIAGNOSTICS - logevent(NULL, "Using gethostbyname() for resolving"); -#endif - /* - * Otherwise use the IPv4-only gethostbyname... - * (NOTE: we don't use gethostbyname as a fallback!) - */ - if ( (h = p_gethostbyname(host)) ) - ret->resolved = TRUE; - else - err = p_WSAGetLastError(); - } - - if (!ret->resolved) { - ret->error = (err == WSAENETDOWN ? "Network is down" : - err == WSAHOST_NOT_FOUND ? "Host does not exist" : - err == WSATRY_AGAIN ? "Host not found" : -#ifndef NO_IPV6 - p_getaddrinfo&&p_gai_strerror ? p_gai_strerror(err) : -#endif - "gethostbyname: unknown error"); - } else { - ret->error = NULL; - -#ifndef NO_IPV6 - /* If we got an address info use that... */ - if (ret->ais) { - /* Are we in IPv4 fallback mode? */ - /* We put the IPv4 address into the a variable so we can further-on use the IPv4 code... */ - if (ret->ais->ai_family == AF_INET) - memcpy(&a, - (char *) &((SOCKADDR_IN *) ret->ais-> - ai_addr)->sin_addr, sizeof(a)); - - if (ret->ais->ai_canonname) - strncpy(realhost, ret->ais->ai_canonname, lenof(realhost)); - else - strncpy(realhost, host, lenof(realhost)); - } - /* We used the IPv4-only gethostbyname()... */ - else -#endif - { - int n; - for (n = 0; h->h_addr_list[n]; n++); - ret->addresses = snewn(n, unsigned long); - ret->naddresses = n; - for (n = 0; n < ret->naddresses; n++) { - memcpy(&a, h->h_addr_list[n], sizeof(a)); - ret->addresses[n] = p_ntohl(a); - } - memcpy(&a, h->h_addr, sizeof(a)); - /* This way we are always sure the h->h_name is valid :) */ - strncpy(realhost, h->h_name, sizeof(realhost)); - } - } - } else { - /* - * This must be a numeric IPv4 address because it caused a - * success return from inet_addr. - */ - ret->addresses = snewn(1, unsigned long); - ret->naddresses = 1; - ret->addresses[0] = p_ntohl(a); - ret->resolved = TRUE; - strncpy(realhost, host, sizeof(realhost)); - } - realhost[lenof(realhost)-1] = '\0'; - *canonicalname = snewn(1+strlen(realhost), char); - strcpy(*canonicalname, realhost); - return ret; -} - -SockAddr sk_nonamelookup(const char *host) -{ - SockAddr ret = snew(struct SockAddr_tag); - ret->error = NULL; - ret->resolved = FALSE; -#ifndef NO_IPV6 - ret->ais = NULL; -#endif - ret->addresses = NULL; - ret->naddresses = 0; - ret->refcount = 1; - strncpy(ret->hostname, host, lenof(ret->hostname)); - ret->hostname[lenof(ret->hostname)-1] = '\0'; - return ret; -} - -int sk_nextaddr(SockAddr addr, SockAddrStep *step) -{ -#ifndef NO_IPV6 - if (step->ai) { - if (step->ai->ai_next) { - step->ai = step->ai->ai_next; - return TRUE; - } else - return FALSE; - } -#endif - if (step->curraddr+1 < addr->naddresses) { - step->curraddr++; - return TRUE; - } else { - return FALSE; - } -} - -void sk_getaddr(SockAddr addr, char *buf, int buflen) -{ - SockAddrStep step; - START_STEP(addr, step); - -#ifndef NO_IPV6 - if (step.ai) { - if (p_WSAAddressToStringA) { - p_WSAAddressToStringA(step.ai->ai_addr, step.ai->ai_addrlen, - NULL, buf, &buflen); - } else - strncpy(buf, "IPv6", buflen); - } else -#endif - if (SOCKADDR_FAMILY(addr, step) == AF_INET) { - struct in_addr a; - assert(addr->addresses && step.curraddr < addr->naddresses); - a.s_addr = p_htonl(addr->addresses[step.curraddr]); - strncpy(buf, p_inet_ntoa(a), buflen); - buf[buflen-1] = '\0'; - } else { - strncpy(buf, addr->hostname, buflen); - buf[buflen-1] = '\0'; - } -} - -int sk_hostname_is_local(char *name) -{ - return !strcmp(name, "localhost") || - !strcmp(name, "::1") || - !strncmp(name, "127.", 4); -} - -static INTERFACE_INFO local_interfaces[16]; -static int n_local_interfaces; /* 0=not yet, -1=failed, >0=number */ - -static int ipv4_is_local_addr(struct in_addr addr) -{ - if (ipv4_is_loopback(addr)) - return 1; /* loopback addresses are local */ - if (!n_local_interfaces) { - SOCKET s = p_socket(AF_INET, SOCK_DGRAM, 0); - DWORD retbytes; - - if (p_WSAIoctl && - p_WSAIoctl(s, SIO_GET_INTERFACE_LIST, NULL, 0, - local_interfaces, sizeof(local_interfaces), - &retbytes, NULL, NULL) == 0) - n_local_interfaces = retbytes / sizeof(INTERFACE_INFO); - else - logevent(NULL, "Unable to get list of local IP addresses"); - } - if (n_local_interfaces > 0) { - int i; - for (i = 0; i < n_local_interfaces; i++) { - SOCKADDR_IN *address = - (SOCKADDR_IN *)&local_interfaces[i].iiAddress; - if (address->sin_addr.s_addr == addr.s_addr) - return 1; /* this address is local */ - } - } - return 0; /* this address is not local */ -} - -int sk_address_is_local(SockAddr addr) -{ - SockAddrStep step; - int family; - START_STEP(addr, step); - family = SOCKADDR_FAMILY(addr, step); - -#ifndef NO_IPV6 - if (family == AF_INET6) { - return IN6_IS_ADDR_LOOPBACK((const struct in6_addr *)step.ai->ai_addr); - } else -#endif - if (family == AF_INET) { -#ifndef NO_IPV6 - if (step.ai) { - return ipv4_is_local_addr(((struct sockaddr_in *)step.ai->ai_addr) - ->sin_addr); - } else -#endif - { - struct in_addr a; - assert(addr->addresses && step.curraddr < addr->naddresses); - a.s_addr = p_htonl(addr->addresses[step.curraddr]); - return ipv4_is_local_addr(a); - } - } else { - assert(family == AF_UNSPEC); - return 0; /* we don't know; assume not */ - } -} - -int sk_addrtype(SockAddr addr) -{ - SockAddrStep step; - int family; - START_STEP(addr, step); - family = SOCKADDR_FAMILY(addr, step); - - return (family == AF_INET ? ADDRTYPE_IPV4 : -#ifndef NO_IPV6 - family == AF_INET6 ? ADDRTYPE_IPV6 : -#endif - ADDRTYPE_NAME); -} - -void sk_addrcopy(SockAddr addr, char *buf) -{ - SockAddrStep step; - int family; - START_STEP(addr, step); - family = SOCKADDR_FAMILY(addr, step); - - assert(family != AF_UNSPEC); -#ifndef NO_IPV6 - if (step.ai) { - if (family == AF_INET) - memcpy(buf, &((struct sockaddr_in *)step.ai->ai_addr)->sin_addr, - sizeof(struct in_addr)); - else if (family == AF_INET6) - memcpy(buf, &((struct sockaddr_in6 *)step.ai->ai_addr)->sin6_addr, - sizeof(struct in6_addr)); - else - assert(FALSE); - } else -#endif - if (family == AF_INET) { - struct in_addr a; - assert(addr->addresses && step.curraddr < addr->naddresses); - a.s_addr = p_htonl(addr->addresses[step.curraddr]); - memcpy(buf, (char*) &a.s_addr, 4); - } -} - -void sk_addr_free(SockAddr addr) -{ - if (--addr->refcount > 0) - return; -#ifndef NO_IPV6 - if (addr->ais && p_freeaddrinfo) - p_freeaddrinfo(addr->ais); -#endif - if (addr->addresses) - sfree(addr->addresses); - sfree(addr); -} - -SockAddr sk_addr_dup(SockAddr addr) -{ - addr->refcount++; - return addr; -} - -static Plug sk_tcp_plug(Socket sock, Plug p) -{ - Actual_Socket s = (Actual_Socket) sock; - Plug ret = s->plug; - if (p) - s->plug = p; - return ret; -} - -static void sk_tcp_flush(Socket s) -{ - /* - * We send data to the socket as soon as we can anyway, - * so we don't need to do anything here. :-) - */ -} - -static void sk_tcp_close(Socket s); -static int sk_tcp_write(Socket s, const char *data, int len); -static int sk_tcp_write_oob(Socket s, const char *data, int len); -static void sk_tcp_set_private_ptr(Socket s, void *ptr); -static void *sk_tcp_get_private_ptr(Socket s); -static void sk_tcp_set_frozen(Socket s, int is_frozen); -static const char *sk_tcp_socket_error(Socket s); - -extern char *do_select(SOCKET skt, int startup); - -Socket sk_register(void *sock, Plug plug) -{ - static const struct socket_function_table fn_table = { - sk_tcp_plug, - sk_tcp_close, - sk_tcp_write, - sk_tcp_write_oob, - sk_tcp_flush, - sk_tcp_set_private_ptr, - sk_tcp_get_private_ptr, - sk_tcp_set_frozen, - sk_tcp_socket_error - }; - - DWORD err; - char *errstr; - Actual_Socket ret; - - /* - * Create Socket structure. - */ - ret = snew(struct Socket_tag); - ret->fn = &fn_table; - ret->error = NULL; - ret->plug = plug; - bufchain_init(&ret->output_data); - ret->writable = 1; /* to start with */ - ret->sending_oob = 0; - ret->frozen = 1; - ret->frozen_readable = 0; - ret->localhost_only = 0; /* unused, but best init anyway */ - ret->pending_error = 0; - ret->parent = ret->child = NULL; - ret->addr = NULL; - - ret->s = (SOCKET)sock; - - if (ret->s == INVALID_SOCKET) { - err = p_WSAGetLastError(); - ret->error = winsock_error_string(err); - return (Socket) ret; - } - - ret->oobinline = 0; - - /* Set up a select mechanism. This could be an AsyncSelect on a - * window, or an EventSelect on an event object. */ - errstr = do_select(ret->s, 1); - if (errstr) { - ret->error = errstr; - return (Socket) ret; - } - - add234(sktree, ret); - - return (Socket) ret; -} - -static DWORD try_connect(Actual_Socket sock) -{ - SOCKET s; -#ifndef NO_IPV6 - SOCKADDR_IN6 a6; -#endif - SOCKADDR_IN a; - DWORD err; - char *errstr; - short localport; - int family; - - if (sock->s != INVALID_SOCKET) { - do_select(sock->s, 0); - p_closesocket(sock->s); - } - - plug_log(sock->plug, 0, sock->addr, sock->port, NULL, 0); - - /* - * Open socket. - */ - family = SOCKADDR_FAMILY(sock->addr, sock->step); - - /* - * Remove the socket from the tree before we overwrite its - * internal socket id, because that forms part of the tree's - * sorting criterion. We'll add it back before exiting this - * function, whether we changed anything or not. - */ - del234(sktree, sock); - - s = p_socket(family, SOCK_STREAM, 0); - sock->s = s; - - if (s == INVALID_SOCKET) { - err = p_WSAGetLastError(); - sock->error = winsock_error_string(err); - goto ret; - } - - if (sock->oobinline) { - BOOL b = TRUE; - p_setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (void *) &b, sizeof(b)); - } - - if (sock->nodelay) { - BOOL b = TRUE; - p_setsockopt(s, IPPROTO_TCP, TCP_NODELAY, (void *) &b, sizeof(b)); - } - - if (sock->keepalive) { - BOOL b = TRUE; - p_setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (void *) &b, sizeof(b)); - } - - /* - * Bind to local address. - */ - if (sock->privport) - localport = 1023; /* count from 1023 downwards */ - else - localport = 0; /* just use port 0 (ie winsock picks) */ - - /* Loop round trying to bind */ - while (1) { - int sockcode; - -#ifndef NO_IPV6 - if (family == AF_INET6) { - memset(&a6, 0, sizeof(a6)); - a6.sin6_family = AF_INET6; - /*a6.sin6_addr = in6addr_any; */ /* == 0 done by memset() */ - a6.sin6_port = p_htons(localport); - } else -#endif - { - a.sin_family = AF_INET; - a.sin_addr.s_addr = p_htonl(INADDR_ANY); - a.sin_port = p_htons(localport); - } -#ifndef NO_IPV6 - sockcode = p_bind(s, (family == AF_INET6 ? - (struct sockaddr *) &a6 : - (struct sockaddr *) &a), - (family == AF_INET6 ? sizeof(a6) : sizeof(a))); -#else - sockcode = p_bind(s, (struct sockaddr *) &a, sizeof(a)); -#endif - if (sockcode != SOCKET_ERROR) { - err = 0; - break; /* done */ - } else { - err = p_WSAGetLastError(); - if (err != WSAEADDRINUSE) /* failed, for a bad reason */ - break; - } - - if (localport == 0) - break; /* we're only looping once */ - localport--; - if (localport == 0) - break; /* we might have got to the end */ - } - - if (err) { - sock->error = winsock_error_string(err); - goto ret; - } - - /* - * Connect to remote address. - */ -#ifndef NO_IPV6 - if (sock->step.ai) { - if (family == AF_INET6) { - a6.sin6_family = AF_INET6; - a6.sin6_port = p_htons((short) sock->port); - a6.sin6_addr = - ((struct sockaddr_in6 *) sock->step.ai->ai_addr)->sin6_addr; - a6.sin6_flowinfo = ((struct sockaddr_in6 *) sock->step.ai->ai_addr)->sin6_flowinfo; - a6.sin6_scope_id = ((struct sockaddr_in6 *) sock->step.ai->ai_addr)->sin6_scope_id; - } else { - a.sin_family = AF_INET; - a.sin_addr = - ((struct sockaddr_in *) sock->step.ai->ai_addr)->sin_addr; - a.sin_port = p_htons((short) sock->port); - } - } else -#endif - { - assert(sock->addr->addresses && sock->step.curraddr < sock->addr->naddresses); - a.sin_family = AF_INET; - a.sin_addr.s_addr = p_htonl(sock->addr->addresses[sock->step.curraddr]); - a.sin_port = p_htons((short) sock->port); - } - - /* Set up a select mechanism. This could be an AsyncSelect on a - * window, or an EventSelect on an event object. */ - errstr = do_select(s, 1); - if (errstr) { - sock->error = errstr; - err = 1; - goto ret; - } - - if (( -#ifndef NO_IPV6 - p_connect(s, - ((family == AF_INET6) ? (struct sockaddr *) &a6 : - (struct sockaddr *) &a), - (family == AF_INET6) ? sizeof(a6) : sizeof(a)) -#else - p_connect(s, (struct sockaddr *) &a, sizeof(a)) -#endif - ) == SOCKET_ERROR) { - err = p_WSAGetLastError(); - /* - * We expect a potential EWOULDBLOCK here, because the - * chances are the front end has done a select for - * FD_CONNECT, so that connect() will complete - * asynchronously. - */ - if ( err != WSAEWOULDBLOCK ) { - sock->error = winsock_error_string(err); - goto ret; - } - } else { - /* - * If we _don't_ get EWOULDBLOCK, the connect has completed - * and we should set the socket as writable. - */ - sock->writable = 1; - } - - err = 0; - - ret: - - /* - * No matter what happened, put the socket back in the tree. - */ - add234(sktree, sock); - - if (err) - plug_log(sock->plug, 1, sock->addr, sock->port, sock->error, err); - return err; -} - -Socket sk_new(SockAddr addr, int port, int privport, int oobinline, - int nodelay, int keepalive, Plug plug) -{ - static const struct socket_function_table fn_table = { - sk_tcp_plug, - sk_tcp_close, - sk_tcp_write, - sk_tcp_write_oob, - sk_tcp_flush, - sk_tcp_set_private_ptr, - sk_tcp_get_private_ptr, - sk_tcp_set_frozen, - sk_tcp_socket_error - }; - - Actual_Socket ret; - DWORD err; - - /* - * Create Socket structure. - */ - ret = snew(struct Socket_tag); - ret->fn = &fn_table; - ret->error = NULL; - ret->plug = plug; - bufchain_init(&ret->output_data); - ret->connected = 0; /* to start with */ - ret->writable = 0; /* to start with */ - ret->sending_oob = 0; - ret->frozen = 0; - ret->frozen_readable = 0; - ret->localhost_only = 0; /* unused, but best init anyway */ - ret->pending_error = 0; - ret->parent = ret->child = NULL; - ret->oobinline = oobinline; - ret->nodelay = nodelay; - ret->keepalive = keepalive; - ret->privport = privport; - ret->port = port; - ret->addr = addr; - START_STEP(ret->addr, ret->step); - ret->s = INVALID_SOCKET; - - err = 0; - do { - err = try_connect(ret); - } while (err && sk_nextaddr(ret->addr, &ret->step)); - - return (Socket) ret; -} - -Socket sk_newlistener(char *srcaddr, int port, Plug plug, int local_host_only, - int orig_address_family) -{ - static const struct socket_function_table fn_table = { - sk_tcp_plug, - sk_tcp_close, - sk_tcp_write, - sk_tcp_write_oob, - sk_tcp_flush, - sk_tcp_set_private_ptr, - sk_tcp_get_private_ptr, - sk_tcp_set_frozen, - sk_tcp_socket_error - }; - - SOCKET s; -#ifndef NO_IPV6 - SOCKADDR_IN6 a6; -#endif - SOCKADDR_IN a; - - DWORD err; - char *errstr; - Actual_Socket ret; - int retcode; - int on = 1; - - int address_family; - - /* - * Create Socket structure. - */ - ret = snew(struct Socket_tag); - ret->fn = &fn_table; - ret->error = NULL; - ret->plug = plug; - bufchain_init(&ret->output_data); - ret->writable = 0; /* to start with */ - ret->sending_oob = 0; - ret->frozen = 0; - ret->frozen_readable = 0; - ret->localhost_only = local_host_only; - ret->pending_error = 0; - ret->parent = ret->child = NULL; - ret->addr = NULL; - - /* - * Translate address_family from platform-independent constants - * into local reality. - */ - address_family = (orig_address_family == ADDRTYPE_IPV4 ? AF_INET : -#ifndef NO_IPV6 - orig_address_family == ADDRTYPE_IPV6 ? AF_INET6 : -#endif - AF_UNSPEC); - - /* - * Our default, if passed the `don't care' value - * ADDRTYPE_UNSPEC, is to listen on IPv4. If IPv6 is supported, - * we will also set up a second socket listening on IPv6, but - * the v4 one is primary since that ought to work even on - * non-v6-supporting systems. - */ - if (address_family == AF_UNSPEC) address_family = AF_INET; - - /* - * Open socket. - */ - s = p_socket(address_family, SOCK_STREAM, 0); - ret->s = s; - - if (s == INVALID_SOCKET) { - err = p_WSAGetLastError(); - ret->error = winsock_error_string(err); - return (Socket) ret; - } - - ret->oobinline = 0; - - p_setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (const char *)&on, sizeof(on)); - -#ifndef NO_IPV6 - if (address_family == AF_INET6) { - memset(&a6, 0, sizeof(a6)); - a6.sin6_family = AF_INET6; - /* FIXME: srcaddr is ignored for IPv6, because I (SGT) don't - * know how to do it. :-) - * (jeroen:) saddr is specified as an address.. eg 2001:db8::1 - * Thus we need either a parser that understands [2001:db8::1]:80 - * style addresses and/or enhance this to understand hostnames too. */ - if (local_host_only) - a6.sin6_addr = in6addr_loopback; - else - a6.sin6_addr = in6addr_any; - a6.sin6_port = p_htons(port); - } else -#endif - { - int got_addr = 0; - a.sin_family = AF_INET; - - /* - * Bind to source address. First try an explicitly - * specified one... - */ - if (srcaddr) { - a.sin_addr.s_addr = p_inet_addr(srcaddr); - if (a.sin_addr.s_addr != INADDR_NONE) { - /* Override localhost_only with specified listen addr. */ - ret->localhost_only = ipv4_is_loopback(a.sin_addr); - got_addr = 1; - } - } - - /* - * ... and failing that, go with one of the standard ones. - */ - if (!got_addr) { - if (local_host_only) - a.sin_addr.s_addr = p_htonl(INADDR_LOOPBACK); - else - a.sin_addr.s_addr = p_htonl(INADDR_ANY); - } - - a.sin_port = p_htons((short)port); - } -#ifndef NO_IPV6 - retcode = p_bind(s, (address_family == AF_INET6 ? - (struct sockaddr *) &a6 : - (struct sockaddr *) &a), - (address_family == - AF_INET6 ? sizeof(a6) : sizeof(a))); -#else - retcode = p_bind(s, (struct sockaddr *) &a, sizeof(a)); -#endif - if (retcode != SOCKET_ERROR) { - err = 0; - } else { - err = p_WSAGetLastError(); - } - - if (err) { - p_closesocket(s); - ret->error = winsock_error_string(err); - return (Socket) ret; - } - - - if (p_listen(s, SOMAXCONN) == SOCKET_ERROR) { - p_closesocket(s); - ret->error = winsock_error_string(err); - return (Socket) ret; - } - - /* Set up a select mechanism. This could be an AsyncSelect on a - * window, or an EventSelect on an event object. */ - errstr = do_select(s, 1); - if (errstr) { - p_closesocket(s); - ret->error = errstr; - return (Socket) ret; - } - - add234(sktree, ret); - -#ifndef NO_IPV6 - /* - * If we were given ADDRTYPE_UNSPEC, we must also create an - * IPv6 listening socket and link it to this one. - */ - if (address_family == AF_INET && orig_address_family == ADDRTYPE_UNSPEC) { - Actual_Socket other; - - other = (Actual_Socket) sk_newlistener(srcaddr, port, plug, - local_host_only, ADDRTYPE_IPV6); - - if (other) { - if (!other->error) { - other->parent = ret; - ret->child = other; - } else { - sfree(other); - } - } - } -#endif - - return (Socket) ret; -} - -static void sk_tcp_close(Socket sock) -{ - extern char *do_select(SOCKET skt, int startup); - Actual_Socket s = (Actual_Socket) sock; - - if (s->child) - sk_tcp_close((Socket)s->child); - - del234(sktree, s); - do_select(s->s, 0); - p_closesocket(s->s); - if (s->addr) - sk_addr_free(s->addr); - sfree(s); -} - -/* - * The function which tries to send on a socket once it's deemed - * writable. - */ -void try_send(Actual_Socket s) -{ - while (s->sending_oob || bufchain_size(&s->output_data) > 0) { - int nsent; - DWORD err; - void *data; - int len, urgentflag; - - if (s->sending_oob) { - urgentflag = MSG_OOB; - len = s->sending_oob; - data = &s->oobdata; - } else { - urgentflag = 0; - bufchain_prefix(&s->output_data, &data, &len); - } - nsent = p_send(s->s, data, len, urgentflag); - noise_ultralight(nsent); - if (nsent <= 0) { - err = (nsent < 0 ? p_WSAGetLastError() : 0); - if ((err < WSABASEERR && nsent < 0) || err == WSAEWOULDBLOCK) { - /* - * Perfectly normal: we've sent all we can for the moment. - * - * (Some WinSock send() implementations can return - * <0 but leave no sensible error indication - - * WSAGetLastError() is called but returns zero or - * a small number - so we check that case and treat - * it just like WSAEWOULDBLOCK.) - */ - s->writable = FALSE; - return; - } else if (nsent == 0 || - err == WSAECONNABORTED || err == WSAECONNRESET) { - /* - * If send() returns CONNABORTED or CONNRESET, we - * unfortunately can't just call plug_closing(), - * because it's quite likely that we're currently - * _in_ a call from the code we'd be calling back - * to, so we'd have to make half the SSH code - * reentrant. Instead we flag a pending error on - * the socket, to be dealt with (by calling - * plug_closing()) at some suitable future moment. - */ - s->pending_error = err; - return; - } else { - /* We're inside the Windows frontend here, so we know - * that the frontend handle is unnecessary. */ - logevent(NULL, winsock_error_string(err)); - fatalbox("%s", winsock_error_string(err)); - } - } else { - if (s->sending_oob) { - if (nsent < len) { - memmove(s->oobdata, s->oobdata+nsent, len-nsent); - s->sending_oob = len - nsent; - } else { - s->sending_oob = 0; - } - } else { - bufchain_consume(&s->output_data, nsent); - } - } - } -} - -static int sk_tcp_write(Socket sock, const char *buf, int len) -{ - Actual_Socket s = (Actual_Socket) sock; - - /* - * Add the data to the buffer list on the socket. - */ - bufchain_add(&s->output_data, buf, len); - - /* - * Now try sending from the start of the buffer list. - */ - if (s->writable) - try_send(s); - - return bufchain_size(&s->output_data); -} - -static int sk_tcp_write_oob(Socket sock, const char *buf, int len) -{ - Actual_Socket s = (Actual_Socket) sock; - - /* - * Replace the buffer list on the socket with the data. - */ - bufchain_clear(&s->output_data); - assert(len <= sizeof(s->oobdata)); - memcpy(s->oobdata, buf, len); - s->sending_oob = len; - - /* - * Now try sending from the start of the buffer list. - */ - if (s->writable) - try_send(s); - - return s->sending_oob; -} - -int select_result(WPARAM wParam, LPARAM lParam) -{ - int ret, open; - DWORD err; - char buf[20480]; /* nice big buffer for plenty of speed */ - Actual_Socket s; - u_long atmark; - - /* wParam is the socket itself */ - - if (wParam == 0) - return 1; /* boggle */ - - s = find234(sktree, (void *) wParam, cmpforsearch); - if (!s) - return 1; /* boggle */ - - if ((err = WSAGETSELECTERROR(lParam)) != 0) { - /* - * An error has occurred on this socket. Pass it to the - * plug. - */ - if (s->addr) { - plug_log(s->plug, 1, s->addr, s->port, - winsock_error_string(err), err); - while (s->addr && sk_nextaddr(s->addr, &s->step)) { - err = try_connect(s); - } - } - if (err != 0) - return plug_closing(s->plug, winsock_error_string(err), err, 0); - else - return 1; - } - - noise_ultralight(lParam); - - switch (WSAGETSELECTEVENT(lParam)) { - case FD_CONNECT: - s->connected = s->writable = 1; - /* - * Once a socket is connected, we can stop falling - * back through the candidate addresses to connect - * to. - */ - if (s->addr) { - sk_addr_free(s->addr); - s->addr = NULL; - } - break; - case FD_READ: - /* In the case the socket is still frozen, we don't even bother */ - if (s->frozen) { - s->frozen_readable = 1; - break; - } - - /* - * We have received data on the socket. For an oobinline - * socket, this might be data _before_ an urgent pointer, - * in which case we send it to the back end with type==1 - * (data prior to urgent). - */ - if (s->oobinline) { - atmark = 1; - p_ioctlsocket(s->s, SIOCATMARK, &atmark); - /* - * Avoid checking the return value from ioctlsocket(), - * on the grounds that some WinSock wrappers don't - * support it. If it does nothing, we get atmark==1, - * which is equivalent to `no OOB pending', so the - * effect will be to non-OOB-ify any OOB data. - */ - } else - atmark = 1; - - ret = p_recv(s->s, buf, sizeof(buf), 0); - noise_ultralight(ret); - if (ret < 0) { - err = p_WSAGetLastError(); - if (err == WSAEWOULDBLOCK) { - break; - } - } - if (ret < 0) { - return plug_closing(s->plug, winsock_error_string(err), err, - 0); - } else if (0 == ret) { - return plug_closing(s->plug, NULL, 0, 0); - } else { - return plug_receive(s->plug, atmark ? 0 : 1, buf, ret); - } - break; - case FD_OOB: - /* - * This will only happen on a non-oobinline socket. It - * indicates that we can immediately perform an OOB read - * and get back OOB data, which we will send to the back - * end with type==2 (urgent data). - */ - ret = p_recv(s->s, buf, sizeof(buf), MSG_OOB); - noise_ultralight(ret); - if (ret <= 0) { - char *str = (ret == 0 ? "Internal networking trouble" : - winsock_error_string(p_WSAGetLastError())); - /* We're inside the Windows frontend here, so we know - * that the frontend handle is unnecessary. */ - logevent(NULL, str); - fatalbox("%s", str); - } else { - return plug_receive(s->plug, 2, buf, ret); - } - break; - case FD_WRITE: - { - int bufsize_before, bufsize_after; - s->writable = 1; - bufsize_before = s->sending_oob + bufchain_size(&s->output_data); - try_send(s); - bufsize_after = s->sending_oob + bufchain_size(&s->output_data); - if (bufsize_after < bufsize_before) - plug_sent(s->plug, bufsize_after); - } - break; - case FD_CLOSE: - /* Signal a close on the socket. First read any outstanding data. */ - open = 1; - do { - ret = p_recv(s->s, buf, sizeof(buf), 0); - if (ret < 0) { - err = p_WSAGetLastError(); - if (err == WSAEWOULDBLOCK) - break; - return plug_closing(s->plug, winsock_error_string(err), - err, 0); - } else { - if (ret) - open &= plug_receive(s->plug, 0, buf, ret); - else - open &= plug_closing(s->plug, NULL, 0, 0); - } - } while (ret > 0); - return open; - case FD_ACCEPT: - { -#ifdef NO_IPV6 - struct sockaddr_in isa; -#else - struct sockaddr_storage isa; -#endif - int addrlen = sizeof(isa); - SOCKET t; /* socket of connection */ - - memset(&isa, 0, sizeof(isa)); - err = 0; - t = p_accept(s->s,(struct sockaddr *)&isa,&addrlen); - if (t == INVALID_SOCKET) - { - err = p_WSAGetLastError(); - if (err == WSATRY_AGAIN) - break; - } -#ifndef NO_IPV6 - if (isa.ss_family == AF_INET && - s->localhost_only && - !ipv4_is_local_addr(((struct sockaddr_in *)&isa)->sin_addr)) -#else - if (s->localhost_only && !ipv4_is_local_addr(isa.sin_addr)) -#endif - { - p_closesocket(t); /* dodgy WinSock let nonlocal through */ - } else if (plug_accepting(s->plug, (void*)t)) { - p_closesocket(t); /* denied or error */ - } - } - } - - return 1; -} - -/* - * Deal with socket errors detected in try_send(). - */ -void net_pending_errors(void) -{ - int i; - Actual_Socket s; - - /* - * This might be a fiddly business, because it's just possible - * that handling a pending error on one socket might cause - * others to be closed. (I can't think of any reason this might - * happen in current SSH implementation, but to maintain - * generality of this network layer I'll assume the worst.) - * - * So what we'll do is search the socket list for _one_ socket - * with a pending error, and then handle it, and then search - * the list again _from the beginning_. Repeat until we make a - * pass with no socket errors present. That way we are - * protected against the socket list changing under our feet. - */ - - do { - for (i = 0; (s = index234(sktree, i)) != NULL; i++) { - if (s->pending_error) { - /* - * An error has occurred on this socket. Pass it to the - * plug. - */ - plug_closing(s->plug, - winsock_error_string(s->pending_error), - s->pending_error, 0); - break; - } - } - } while (s); -} - -/* - * Each socket abstraction contains a `void *' private field in - * which the client can keep state. - */ -static void sk_tcp_set_private_ptr(Socket sock, void *ptr) -{ - Actual_Socket s = (Actual_Socket) sock; - s->private_ptr = ptr; -} - -static void *sk_tcp_get_private_ptr(Socket sock) -{ - Actual_Socket s = (Actual_Socket) sock; - return s->private_ptr; -} - -/* - * Special error values are returned from sk_namelookup and sk_new - * if there's a problem. These functions extract an error message, - * or return NULL if there's no problem. - */ -const char *sk_addr_error(SockAddr addr) -{ - return addr->error; -} -static const char *sk_tcp_socket_error(Socket sock) -{ - Actual_Socket s = (Actual_Socket) sock; - return s->error; -} - -static void sk_tcp_set_frozen(Socket sock, int is_frozen) -{ - Actual_Socket s = (Actual_Socket) sock; - if (s->frozen == is_frozen) - return; - s->frozen = is_frozen; - if (!is_frozen) { - do_select(s->s, 1); - if (s->frozen_readable) { - char c; - p_recv(s->s, &c, 1, MSG_PEEK); - } - } - s->frozen_readable = 0; -} - -void socket_reselect_all(void) -{ - Actual_Socket s; - int i; - - for (i = 0; (s = index234(sktree, i)) != NULL; i++) { - if (!s->frozen) - do_select(s->s, 1); - } -} - -/* - * For Plink: enumerate all sockets currently active. - */ -SOCKET first_socket(int *state) -{ - Actual_Socket s; - *state = 0; - s = index234(sktree, (*state)++); - return s ? s->s : INVALID_SOCKET; -} - -SOCKET next_socket(int *state) -{ - Actual_Socket s = index234(sktree, (*state)++); - return s ? s->s : INVALID_SOCKET; -} - -extern int socket_writable(SOCKET skt) -{ - Actual_Socket s = find234(sktree, (void *)skt, cmpforsearch); - - if (s) - return bufchain_size(&s->output_data) > 0; - else - return 0; -} - -int net_service_lookup(char *service) -{ - struct servent *se; - se = p_getservbyname(service, NULL); - if (se != NULL) - return p_ntohs(se->s_port); - else - return 0; -} - -char *get_hostname(void) -{ - int len = 128; - char *hostname = NULL; - do { - len *= 2; - hostname = sresize(hostname, len, char); - if (p_gethostname(hostname, len) < 0) { - sfree(hostname); - hostname = NULL; - break; - } - } while (strlen(hostname) >= len-1); - return hostname; -} - -SockAddr platform_get_x11_unix_address(const char *display, int displaynum, - char **canonicalname) -{ - SockAddr ret = snew(struct SockAddr_tag); - memset(ret, 0, sizeof(struct SockAddr_tag)); - ret->error = "unix sockets not supported on this platform"; - ret->refcount = 1; - return ret; -} diff --git a/tools/plink/winnoise.c b/tools/plink/winnoise.c deleted file mode 100644 index bdf869719..000000000 --- a/tools/plink/winnoise.c +++ /dev/null @@ -1,128 +0,0 @@ -/* - * Noise generation for PuTTY's cryptographic random number - * generator. - */ - -#include - -#include "putty.h" -#include "ssh.h" -#include "storage.h" - -/* - * This function is called once, at PuTTY startup, and will do some - * seriously silly things like listing directories and getting disk - * free space and a process snapshot. - */ - -void noise_get_heavy(void (*func) (void *, int)) -{ - HANDLE srch; - WIN32_FIND_DATA finddata; - DWORD pid; - char winpath[MAX_PATH + 3]; - - GetWindowsDirectory(winpath, sizeof(winpath)); - strcat(winpath, "\\*"); - srch = FindFirstFile(winpath, &finddata); - if (srch != INVALID_HANDLE_VALUE) { - do { - func(&finddata, sizeof(finddata)); - } while (FindNextFile(srch, &finddata)); - FindClose(srch); - } - - pid = GetCurrentProcessId(); - func(&pid, sizeof(pid)); - - read_random_seed(func); - /* Update the seed immediately, in case another instance uses it. */ - random_save_seed(); -} - -void random_save_seed(void) -{ - int len; - void *data; - - if (random_active) { - random_get_savedata(&data, &len); - write_random_seed(data, len); - sfree(data); - } -} - -/* - * This function is called every time the random pool needs - * stirring, and will acquire the system time in all available - * forms. - */ -void noise_get_light(void (*func) (void *, int)) -{ - SYSTEMTIME systime; - DWORD adjust[2]; - BOOL rubbish; - - GetSystemTime(&systime); - func(&systime, sizeof(systime)); - - GetSystemTimeAdjustment(&adjust[0], &adjust[1], &rubbish); - func(&adjust, sizeof(adjust)); -} - -/* - * This function is called on a timer, and it will monitor - * frequently changing quantities such as the state of physical and - * virtual memory, the state of the process's message queue, which - * window is in the foreground, which owns the clipboard, etc. - */ -void noise_regular(void) -{ - HWND w; - DWORD z; - POINT pt; - MEMORYSTATUS memstat; - FILETIME times[4]; - - w = GetForegroundWindow(); - random_add_noise(&w, sizeof(w)); - w = GetCapture(); - random_add_noise(&w, sizeof(w)); - w = GetClipboardOwner(); - random_add_noise(&w, sizeof(w)); - z = GetQueueStatus(QS_ALLEVENTS); - random_add_noise(&z, sizeof(z)); - - GetCursorPos(&pt); - random_add_noise(&pt, sizeof(pt)); - - GlobalMemoryStatus(&memstat); - random_add_noise(&memstat, sizeof(memstat)); - - GetThreadTimes(GetCurrentThread(), times, times + 1, times + 2, - times + 3); - random_add_noise(×, sizeof(times)); - GetProcessTimes(GetCurrentProcess(), times, times + 1, times + 2, - times + 3); - random_add_noise(×, sizeof(times)); -} - -/* - * This function is called on every keypress or mouse move, and - * will add the current Windows time and performance monitor - * counter to the noise pool. It gets the scan code or mouse - * position passed in. - */ -void noise_ultralight(unsigned long data) -{ - DWORD wintime; - LARGE_INTEGER perftime; - - random_add_noise(&data, sizeof(DWORD)); - - wintime = GetTickCount(); - random_add_noise(&wintime, sizeof(DWORD)); - - if (QueryPerformanceCounter(&perftime)) - random_add_noise(&perftime, sizeof(perftime)); -} diff --git a/tools/plink/winpgntc.c b/tools/plink/winpgntc.c deleted file mode 100644 index 3bfafc972..000000000 --- a/tools/plink/winpgntc.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * Pageant client code. - */ - -#include -#include - -#include "putty.h" - -#define AGENT_COPYDATA_ID 0x804e50ba /* random goop */ -#define AGENT_MAX_MSGLEN 8192 - -int agent_exists(void) -{ - HWND hwnd; - hwnd = FindWindow("Pageant", "Pageant"); - if (!hwnd) - return FALSE; - else - return TRUE; -} - -/* - * Unfortunately, this asynchronous agent request mechanism doesn't - * appear to work terribly well. I'm going to comment it out for - * the moment, and see if I can come up with a better one :-/ - */ -#ifdef WINDOWS_ASYNC_AGENT - -struct agent_query_data { - COPYDATASTRUCT cds; - unsigned char *mapping; - HANDLE handle; - char *mapname; - HWND hwnd; - void (*callback)(void *, void *, int); - void *callback_ctx; -}; - -DWORD WINAPI agent_query_thread(LPVOID param) -{ - struct agent_query_data *data = (struct agent_query_data *)param; - unsigned char *ret; - int id, retlen; - - id = SendMessage(data->hwnd, WM_COPYDATA, (WPARAM) NULL, - (LPARAM) &data->cds); - ret = NULL; - if (id > 0) { - retlen = 4 + GET_32BIT(data->mapping); - ret = snewn(retlen, unsigned char); - if (ret) { - memcpy(ret, data->mapping, retlen); - } - } - if (!ret) - retlen = 0; - UnmapViewOfFile(data->mapping); - CloseHandle(data->handle); - sfree(data->mapname); - - agent_schedule_callback(data->callback, data->callback_ctx, ret, retlen); - - return 0; -} - -#endif - -int agent_query(void *in, int inlen, void **out, int *outlen, - void (*callback)(void *, void *, int), void *callback_ctx) -{ - HWND hwnd; - char *mapname; - HANDLE filemap; - unsigned char *p, *ret; - int id, retlen; - COPYDATASTRUCT cds; - - *out = NULL; - *outlen = 0; - - hwnd = FindWindow("Pageant", "Pageant"); - if (!hwnd) - return 1; /* *out == NULL, so failure */ - mapname = dupprintf("PageantRequest%08x", (unsigned)GetCurrentThreadId()); - filemap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, - 0, AGENT_MAX_MSGLEN, mapname); - if (filemap == NULL || filemap == INVALID_HANDLE_VALUE) - return 1; /* *out == NULL, so failure */ - p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0); - memcpy(p, in, inlen); - cds.dwData = AGENT_COPYDATA_ID; - cds.cbData = 1 + strlen(mapname); - cds.lpData = mapname; -#ifdef WINDOWS_ASYNC_AGENT - if (callback != NULL && !(flags & FLAG_SYNCAGENT)) { - /* - * We need an asynchronous Pageant request. Since I know of - * no way to stop SendMessage from blocking the thread it's - * called in, I see no option but to start a fresh thread. - * When we're done we'll PostMessage the result back to our - * main window, so that the callback is done in the primary - * thread to avoid concurrency. - */ - struct agent_query_data *data = snew(struct agent_query_data); - DWORD threadid; - data->mapping = p; - data->handle = filemap; - data->mapname = mapname; - data->callback = callback; - data->callback_ctx = callback_ctx; - data->cds = cds; /* structure copy */ - data->hwnd = hwnd; - if (CreateThread(NULL, 0, agent_query_thread, data, 0, &threadid)) - return 0; - sfree(data); - } -#endif - - /* - * The user either passed a null callback (indicating that the - * query is required to be synchronous) or CreateThread failed. - * Either way, we need a synchronous request. - */ - id = SendMessage(hwnd, WM_COPYDATA, (WPARAM) NULL, (LPARAM) &cds); - if (id > 0) { - retlen = 4 + GET_32BIT(p); - ret = snewn(retlen, unsigned char); - if (ret) { - memcpy(ret, p, retlen); - *out = ret; - *outlen = retlen; - } - } - UnmapViewOfFile(p); - CloseHandle(filemap); - return 1; -} diff --git a/tools/plink/winplink.c b/tools/plink/winplink.c deleted file mode 100644 index 525b1a212..000000000 --- a/tools/plink/winplink.c +++ /dev/null @@ -1,719 +0,0 @@ -/* - * PLink - a Windows command-line (stdin/stdout) variant of PuTTY. - */ - -#include -#include -#include -#include - -#define PUTTY_DO_GLOBALS /* actually _define_ globals */ -#include "putty.h" -#include "storage.h" -#include "tree234.h" - -#define WM_AGENT_CALLBACK (WM_APP + 4) - -struct agent_callback { - void (*callback)(void *, void *, int); - void *callback_ctx; - void *data; - int len; -}; - -void fatalbox(char *p, ...) -{ - va_list ap; - fprintf(stderr, "FATAL ERROR: "); - va_start(ap, p); - vfprintf(stderr, p, ap); - va_end(ap); - fputc('\n', stderr); - if (logctx) { - log_free(logctx); - logctx = NULL; - } - cleanup_exit(1); -} -void modalfatalbox(char *p, ...) -{ - va_list ap; - fprintf(stderr, "FATAL ERROR: "); - va_start(ap, p); - vfprintf(stderr, p, ap); - va_end(ap); - fputc('\n', stderr); - if (logctx) { - log_free(logctx); - logctx = NULL; - } - cleanup_exit(1); -} -void connection_fatal(void *frontend, char *p, ...) -{ - va_list ap; - fprintf(stderr, "FATAL ERROR: "); - va_start(ap, p); - vfprintf(stderr, p, ap); - va_end(ap); - fputc('\n', stderr); - if (logctx) { - log_free(logctx); - logctx = NULL; - } - cleanup_exit(1); -} -void cmdline_error(char *p, ...) -{ - va_list ap; - fprintf(stderr, "plink: "); - va_start(ap, p); - vfprintf(stderr, p, ap); - va_end(ap); - fputc('\n', stderr); - exit(1); -} - -HANDLE inhandle, outhandle, errhandle; -struct handle *stdin_handle, *stdout_handle, *stderr_handle; -DWORD orig_console_mode; -int connopen; - -WSAEVENT netevent; - -static Backend *back; -static void *backhandle; -static Config cfg; - -int term_ldisc(Terminal *term, int mode) -{ - return FALSE; -} -void ldisc_update(void *frontend, int echo, int edit) -{ - /* Update stdin read mode to reflect changes in line discipline. */ - DWORD mode; - - mode = ENABLE_PROCESSED_INPUT; - if (echo) - mode = mode | ENABLE_ECHO_INPUT; - else - mode = mode & ~ENABLE_ECHO_INPUT; - if (edit) - mode = mode | ENABLE_LINE_INPUT; - else - mode = mode & ~ENABLE_LINE_INPUT; - SetConsoleMode(inhandle, mode); -} - -char *get_ttymode(void *frontend, const char *mode) { return NULL; } - -int from_backend(void *frontend_handle, int is_stderr, - const char *data, int len) -{ - if (is_stderr) { - handle_write(stderr_handle, data, len); - } else { - handle_write(stdout_handle, data, len); - } - - return handle_backlog(stdout_handle) + handle_backlog(stderr_handle); -} - -int from_backend_untrusted(void *frontend_handle, const char *data, int len) -{ - /* - * No "untrusted" output should get here (the way the code is - * currently, it's all diverted by FLAG_STDERR). - */ - assert(!"Unexpected call to from_backend_untrusted()"); - return 0; /* not reached */ -} - -int get_userpass_input(prompts_t *p, unsigned char *in, int inlen) -{ - int ret; - ret = cmdline_get_passwd_input(p, in, inlen); - if (ret == -1) - ret = console_get_userpass_input(p, in, inlen); - return ret; -} - -static DWORD main_thread_id; - -void agent_schedule_callback(void (*callback)(void *, void *, int), - void *callback_ctx, void *data, int len) -{ - struct agent_callback *c = snew(struct agent_callback); - c->callback = callback; - c->callback_ctx = callback_ctx; - c->data = data; - c->len = len; - PostThreadMessage(main_thread_id, WM_AGENT_CALLBACK, 0, (LPARAM)c); -} - -/* - * Short description of parameters. - */ -static void usage(void) -{ - printf("PuTTY Link: command-line connection utility\n"); - printf("%s\n", ver); - printf("Usage: plink [options] [user@]host [command]\n"); - printf(" (\"host\" can also be a PuTTY saved session name)\n"); - printf("Options:\n"); - printf(" -V print version information and exit\n"); - printf(" -pgpfp print PGP key fingerprints and exit\n"); - printf(" -v show verbose messages\n"); - printf(" -load sessname Load settings from saved session\n"); - printf(" -ssh -telnet -rlogin -raw\n"); - printf(" force use of a particular protocol\n"); - printf(" -P port connect to specified port\n"); - printf(" -l user connect with specified username\n"); - printf(" -batch disable all interactive prompts\n"); - printf("The following options only apply to SSH connections:\n"); - printf(" -pw passw login with specified password\n"); - printf(" -D [listen-IP:]listen-port\n"); - printf(" Dynamic SOCKS-based port forwarding\n"); - printf(" -L [listen-IP:]listen-port:host:port\n"); - printf(" Forward local port to remote address\n"); - printf(" -R [listen-IP:]listen-port:host:port\n"); - printf(" Forward remote port to local address\n"); - printf(" -X -x enable / disable X11 forwarding\n"); - printf(" -A -a enable / disable agent forwarding\n"); - printf(" -t -T enable / disable pty allocation\n"); - printf(" -1 -2 force use of particular protocol version\n"); - printf(" -4 -6 force use of IPv4 or IPv6\n"); - printf(" -C enable compression\n"); - printf(" -i key private key file for authentication\n"); - printf(" -noagent disable use of Pageant\n"); - printf(" -agent enable use of Pageant\n"); - printf(" -m file read remote command(s) from file\n"); - printf(" -s remote command is an SSH subsystem (SSH-2 only)\n"); - printf(" -N don't start a shell/command (SSH-2 only)\n"); - printf(" -nc host:port\n"); - printf(" open tunnel in place of session (SSH-2 only)\n"); - exit(1); -} - -static void version(void) -{ - printf("plink: %s\n", ver); - exit(1); -} - -char *do_select(SOCKET skt, int startup) -{ - int events; - if (startup) { - events = (FD_CONNECT | FD_READ | FD_WRITE | - FD_OOB | FD_CLOSE | FD_ACCEPT); - } else { - events = 0; - } - if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) { - switch (p_WSAGetLastError()) { - case WSAENETDOWN: - return "Network is down"; - default: - return "WSAEventSelect(): unknown error"; - } - } - return NULL; -} - -int stdin_gotdata(struct handle *h, void *data, int len) -{ - if (len < 0) { - /* - * Special case: report read error. - */ - char buf[4096]; - FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, -len, 0, - buf, lenof(buf), NULL); - buf[lenof(buf)-1] = '\0'; - if (buf[strlen(buf)-1] == '\n') - buf[strlen(buf)-1] = '\0'; - fprintf(stderr, "Unable to read from standard input: %s\n", buf); - cleanup_exit(0); - } - noise_ultralight(len); - if (connopen && back->connected(backhandle)) { - if (len > 0) { - return back->send(backhandle, data, len); - } else { - back->special(backhandle, TS_EOF); - return 0; - } - } else - return 0; -} - -void stdouterr_sent(struct handle *h, int new_backlog) -{ - if (new_backlog < 0) { - /* - * Special case: report write error. - */ - char buf[4096]; - FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, -new_backlog, 0, - buf, lenof(buf), NULL); - buf[lenof(buf)-1] = '\0'; - if (buf[strlen(buf)-1] == '\n') - buf[strlen(buf)-1] = '\0'; - fprintf(stderr, "Unable to write to standard %s: %s\n", - (h == stdout_handle ? "output" : "error"), buf); - cleanup_exit(0); - } - if (connopen && back->connected(backhandle)) { - back->unthrottle(backhandle, (handle_backlog(stdout_handle) + - handle_backlog(stderr_handle))); - } -} - -int main(int argc, char **argv) -{ - int sending; - int portnumber = -1; - SOCKET *sklist; - int skcount, sksize; - int exitcode; - int errors; - int use_subsystem = 0; - long now, next; - - sklist = NULL; - skcount = sksize = 0; - /* - * Initialise port and protocol to sensible defaults. (These - * will be overridden by more or less anything.) - */ - default_protocol = PROT_SSH; - default_port = 22; - - flags = FLAG_STDERR; - /* - * Process the command line. - */ - do_defaults(NULL, &cfg); - loaded_session = FALSE; - default_protocol = cfg.protocol; - default_port = cfg.port; - errors = 0; - { - /* - * Override the default protocol if PLINK_PROTOCOL is set. - */ - char *p = getenv("PLINK_PROTOCOL"); - if (p) { - const Backend *b = backend_from_name(p); - if (b) { - default_protocol = cfg.protocol = b->protocol; - default_port = cfg.port = b->default_port; - } - } - } - while (--argc) { - char *p = *++argv; - if (*p == '-') { - int ret = cmdline_process_param(p, (argc > 1 ? argv[1] : NULL), - 1, &cfg); - if (ret == -2) { - fprintf(stderr, - "plink: option \"%s\" requires an argument\n", p); - errors = 1; - } else if (ret == 2) { - --argc, ++argv; - } else if (ret == 1) { - continue; - } else if (!strcmp(p, "-batch")) { - console_batch_mode = 1; - } else if (!strcmp(p, "-s")) { - /* Save status to write to cfg later. */ - use_subsystem = 1; - } else if (!strcmp(p, "-V")) { - version(); - } else if (!strcmp(p, "-pgpfp")) { - pgp_fingerprints(); - exit(1); - } else { - fprintf(stderr, "plink: unknown option \"%s\"\n", p); - errors = 1; - } - } else if (*p) { - if (!cfg_launchable(&cfg)) { - char *q = p; - /* - * If the hostname starts with "telnet:", set the - * protocol to Telnet and process the string as a - * Telnet URL. - */ - if (!strncmp(q, "telnet:", 7)) { - char c; - - q += 7; - if (q[0] == '/' && q[1] == '/') - q += 2; - cfg.protocol = PROT_TELNET; - p = q; - while (*p && *p != ':' && *p != '/') - p++; - c = *p; - if (*p) - *p++ = '\0'; - if (c == ':') - cfg.port = atoi(p); - else - cfg.port = -1; - strncpy(cfg.host, q, sizeof(cfg.host) - 1); - cfg.host[sizeof(cfg.host) - 1] = '\0'; - } else { - char *r, *user, *host; - /* - * Before we process the [user@]host string, we - * first check for the presence of a protocol - * prefix (a protocol name followed by ","). - */ - r = strchr(p, ','); - if (r) { - const Backend *b; - *r = '\0'; - b = backend_from_name(p); - if (b) { - default_protocol = cfg.protocol = b->protocol; - portnumber = b->default_port; - } - p = r + 1; - } - - /* - * A nonzero length string followed by an @ is treated - * as a username. (We discount an _initial_ @.) The - * rest of the string (or the whole string if no @) - * is treated as a session name and/or hostname. - */ - r = strrchr(p, '@'); - if (r == p) - p++, r = NULL; /* discount initial @ */ - if (r) { - *r++ = '\0'; - user = p, host = r; - } else { - user = NULL, host = p; - } - - /* - * Now attempt to load a saved session with the - * same name as the hostname. - */ - { - Config cfg2; - do_defaults(host, &cfg2); - if (loaded_session || !cfg_launchable(&cfg2)) { - /* No settings for this host; use defaults */ - /* (or session was already loaded with -load) */ - strncpy(cfg.host, host, sizeof(cfg.host) - 1); - cfg.host[sizeof(cfg.host) - 1] = '\0'; - cfg.port = default_port; - } else { - cfg = cfg2; - } - } - - if (user) { - /* Patch in specified username. */ - strncpy(cfg.username, user, - sizeof(cfg.username) - 1); - cfg.username[sizeof(cfg.username) - 1] = '\0'; - } - - } - } else { - char *command; - int cmdlen, cmdsize; - cmdlen = cmdsize = 0; - command = NULL; - - while (argc) { - while (*p) { - if (cmdlen >= cmdsize) { - cmdsize = cmdlen + 512; - command = sresize(command, cmdsize, char); - } - command[cmdlen++]=*p++; - } - if (cmdlen >= cmdsize) { - cmdsize = cmdlen + 512; - command = sresize(command, cmdsize, char); - } - command[cmdlen++]=' '; /* always add trailing space */ - if (--argc) p = *++argv; - } - if (cmdlen) command[--cmdlen]='\0'; - /* change trailing blank to NUL */ - cfg.remote_cmd_ptr = command; - cfg.remote_cmd_ptr2 = NULL; - cfg.nopty = TRUE; /* command => no terminal */ - - break; /* done with cmdline */ - } - } - } - - if (errors) - return 1; - - if (!cfg_launchable(&cfg)) { - usage(); - } - - /* - * Trim leading whitespace off the hostname if it's there. - */ - { - int space = strspn(cfg.host, " \t"); - memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space); - } - - /* See if host is of the form user@host */ - if (cfg_launchable(&cfg)) { - char *atsign = strrchr(cfg.host, '@'); - /* Make sure we're not overflowing the user field */ - if (atsign) { - if (atsign - cfg.host < sizeof cfg.username) { - strncpy(cfg.username, cfg.host, atsign - cfg.host); - cfg.username[atsign - cfg.host] = '\0'; - } - memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1)); - } - } - - /* - * Perform command-line overrides on session configuration. - */ - cmdline_run_saved(&cfg); - - /* - * Apply subsystem status. - */ - if (use_subsystem) - cfg.ssh_subsys = TRUE; - - /* - * Trim a colon suffix off the hostname if it's there. - */ - cfg.host[strcspn(cfg.host, ":")] = '\0'; - - /* - * Remove any remaining whitespace from the hostname. - */ - { - int p1 = 0, p2 = 0; - while (cfg.host[p2] != '\0') { - if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') { - cfg.host[p1] = cfg.host[p2]; - p1++; - } - p2++; - } - cfg.host[p1] = '\0'; - } - - if (!cfg.remote_cmd_ptr && !*cfg.remote_cmd && !*cfg.ssh_nc_host) - flags |= FLAG_INTERACTIVE; - - /* - * Select protocol. This is farmed out into a table in a - * separate file to enable an ssh-free variant. - */ - back = backend_from_proto(cfg.protocol); - if (back == NULL) { - fprintf(stderr, - "Internal fault: Unsupported protocol found\n"); - return 1; - } - - /* - * Select port. - */ - if (portnumber != -1) - cfg.port = portnumber; - - sk_init(); - if (p_WSAEventSelect == NULL) { - fprintf(stderr, "Plink requires WinSock 2\n"); - return 1; - } - - logctx = log_init(NULL, &cfg); - console_provide_logctx(logctx); - - /* - * Start up the connection. - */ - netevent = CreateEvent(NULL, FALSE, FALSE, NULL); - { - const char *error; - char *realhost; - /* nodelay is only useful if stdin is a character device (console) */ - int nodelay = cfg.tcp_nodelay && - (GetFileType(GetStdHandle(STD_INPUT_HANDLE)) == FILE_TYPE_CHAR); - - error = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, - &realhost, nodelay, cfg.tcp_keepalives); - if (error) { - fprintf(stderr, "Unable to open connection:\n%s", error); - return 1; - } - back->provide_logctx(backhandle, logctx); - sfree(realhost); - } - connopen = 1; - - inhandle = GetStdHandle(STD_INPUT_HANDLE); - outhandle = GetStdHandle(STD_OUTPUT_HANDLE); - errhandle = GetStdHandle(STD_ERROR_HANDLE); - - /* - * Turn off ECHO and LINE input modes. We don't care if this - * call fails, because we know we aren't necessarily running in - * a console. - */ - GetConsoleMode(inhandle, &orig_console_mode); - SetConsoleMode(inhandle, ENABLE_PROCESSED_INPUT); - - /* - * Pass the output handles to the handle-handling subsystem. - * (The input one we leave until we're through the - * authentication process.) - */ - stdout_handle = handle_output_new(outhandle, stdouterr_sent, NULL, 0); - stderr_handle = handle_output_new(errhandle, stdouterr_sent, NULL, 0); - - main_thread_id = GetCurrentThreadId(); - - sending = FALSE; - - now = GETTICKCOUNT(); - - while (1) { - int nhandles; - HANDLE *handles; - int n; - DWORD ticks; - - if (!sending && back->sendok(backhandle)) { - stdin_handle = handle_input_new(inhandle, stdin_gotdata, NULL, - 0); - sending = TRUE; - } - - if (run_timers(now, &next)) { - ticks = next - GETTICKCOUNT(); - if (ticks < 0) ticks = 0; /* just in case */ - } else { - ticks = INFINITE; - } - - handles = handle_get_events(&nhandles); - handles = sresize(handles, nhandles+1, HANDLE); - handles[nhandles] = netevent; - n = MsgWaitForMultipleObjects(nhandles+1, handles, FALSE, ticks, - QS_POSTMESSAGE); - if ((unsigned)(n - WAIT_OBJECT_0) < (unsigned)nhandles) { - handle_got_event(handles[n - WAIT_OBJECT_0]); - } else if (n == WAIT_OBJECT_0 + nhandles) { - WSANETWORKEVENTS things; - SOCKET socket; - extern SOCKET first_socket(int *), next_socket(int *); - extern int select_result(WPARAM, LPARAM); - int i, socketstate; - - /* - * We must not call select_result() for any socket - * until we have finished enumerating within the tree. - * This is because select_result() may close the socket - * and modify the tree. - */ - /* Count the active sockets. */ - i = 0; - for (socket = first_socket(&socketstate); - socket != INVALID_SOCKET; - socket = next_socket(&socketstate)) i++; - - /* Expand the buffer if necessary. */ - if (i > sksize) { - sksize = i + 16; - sklist = sresize(sklist, sksize, SOCKET); - } - - /* Retrieve the sockets into sklist. */ - skcount = 0; - for (socket = first_socket(&socketstate); - socket != INVALID_SOCKET; - socket = next_socket(&socketstate)) { - sklist[skcount++] = socket; - } - - /* Now we're done enumerating; go through the list. */ - for (i = 0; i < skcount; i++) { - WPARAM wp; - socket = sklist[i]; - wp = (WPARAM) socket; - if (!p_WSAEnumNetworkEvents(socket, NULL, &things)) { - static const struct { int bit, mask; } eventtypes[] = { - {FD_CONNECT_BIT, FD_CONNECT}, - {FD_READ_BIT, FD_READ}, - {FD_CLOSE_BIT, FD_CLOSE}, - {FD_OOB_BIT, FD_OOB}, - {FD_WRITE_BIT, FD_WRITE}, - {FD_ACCEPT_BIT, FD_ACCEPT}, - }; - int e; - - noise_ultralight(socket); - noise_ultralight(things.lNetworkEvents); - - for (e = 0; e < lenof(eventtypes); e++) - if (things.lNetworkEvents & eventtypes[e].mask) { - LPARAM lp; - int err = things.iErrorCode[eventtypes[e].bit]; - lp = WSAMAKESELECTREPLY(eventtypes[e].mask, err); - connopen &= select_result(wp, lp); - } - } - } - } else if (n == WAIT_OBJECT_0 + nhandles + 1) { - MSG msg; - while (PeekMessage(&msg, INVALID_HANDLE_VALUE, - WM_AGENT_CALLBACK, WM_AGENT_CALLBACK, - PM_REMOVE)) { - struct agent_callback *c = (struct agent_callback *)msg.lParam; - c->callback(c->callback_ctx, c->data, c->len); - sfree(c); - } - } - - if (n == WAIT_TIMEOUT) { - now = next; - } else { - now = GETTICKCOUNT(); - } - - sfree(handles); - - if (sending) - handle_unthrottle(stdin_handle, back->sendbuffer(backhandle)); - - if ((!connopen || !back->connected(backhandle)) && - handle_backlog(stdout_handle) + handle_backlog(stderr_handle) == 0) - break; /* we closed the connection */ - } - exitcode = back->exitcode(backhandle); - if (exitcode < 0) { - fprintf(stderr, "Remote process exit code unavailable\n"); - exitcode = 1; /* this is an error condition */ - } - cleanup_exit(exitcode); - return 0; /* placate compiler warning */ -} diff --git a/tools/plink/winproxy.c b/tools/plink/winproxy.c deleted file mode 100644 index 45998e400..000000000 --- a/tools/plink/winproxy.c +++ /dev/null @@ -1,217 +0,0 @@ -/* - * winproxy.c: Windows implementation of platform_new_connection(), - * supporting an OpenSSH-like proxy command via the winhandl.c - * mechanism. - */ - -#include -#include - -#define DEFINE_PLUG_METHOD_MACROS -#include "tree234.h" -#include "putty.h" -#include "network.h" -#include "proxy.h" - -typedef struct Socket_localproxy_tag *Local_Proxy_Socket; - -struct Socket_localproxy_tag { - const struct socket_function_table *fn; - /* the above variable absolutely *must* be the first in this structure */ - - HANDLE to_cmd_H, from_cmd_H; - struct handle *to_cmd_h, *from_cmd_h; - - char *error; - - Plug plug; - - void *privptr; -}; - -int localproxy_gotdata(struct handle *h, void *data, int len) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) handle_get_privdata(h); - - if (len < 0) { - return plug_closing(ps->plug, "Read error from local proxy command", - 0, 0); - } else if (len == 0) { - return plug_closing(ps->plug, NULL, 0, 0); - } else { - return plug_receive(ps->plug, 0, data, len); - } -} - -void localproxy_sentdata(struct handle *h, int new_backlog) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) handle_get_privdata(h); - - plug_sent(ps->plug, new_backlog); -} - -static Plug sk_localproxy_plug (Socket s, Plug p) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) s; - Plug ret = ps->plug; - if (p) - ps->plug = p; - return ret; -} - -static void sk_localproxy_close (Socket s) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) s; - - handle_free(ps->to_cmd_h); - handle_free(ps->from_cmd_h); - CloseHandle(ps->to_cmd_H); - CloseHandle(ps->from_cmd_H); - - sfree(ps); -} - -static int sk_localproxy_write (Socket s, const char *data, int len) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) s; - - return handle_write(ps->to_cmd_h, data, len); -} - -static int sk_localproxy_write_oob(Socket s, const char *data, int len) -{ - /* - * oob data is treated as inband; nasty, but nothing really - * better we can do - */ - return sk_localproxy_write(s, data, len); -} - -static void sk_localproxy_flush(Socket s) -{ - /* Local_Proxy_Socket ps = (Local_Proxy_Socket) s; */ - /* do nothing */ -} - -static void sk_localproxy_set_private_ptr(Socket s, void *ptr) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) s; - ps->privptr = ptr; -} - -static void *sk_localproxy_get_private_ptr(Socket s) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) s; - return ps->privptr; -} - -static void sk_localproxy_set_frozen(Socket s, int is_frozen) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) s; - - /* - * FIXME - */ -} - -static const char *sk_localproxy_socket_error(Socket s) -{ - Local_Proxy_Socket ps = (Local_Proxy_Socket) s; - return ps->error; -} - -Socket platform_new_connection(SockAddr addr, char *hostname, - int port, int privport, - int oobinline, int nodelay, int keepalive, - Plug plug, const Config *cfg) -{ - char *cmd; - - static const struct socket_function_table socket_fn_table = { - sk_localproxy_plug, - sk_localproxy_close, - sk_localproxy_write, - sk_localproxy_write_oob, - sk_localproxy_flush, - sk_localproxy_set_private_ptr, - sk_localproxy_get_private_ptr, - sk_localproxy_set_frozen, - sk_localproxy_socket_error - }; - - Local_Proxy_Socket ret; - HANDLE us_to_cmd, us_from_cmd, cmd_to_us, cmd_from_us; - SECURITY_ATTRIBUTES sa; - STARTUPINFO si; - PROCESS_INFORMATION pi; - - if (cfg->proxy_type != PROXY_CMD) - return NULL; - - cmd = format_telnet_command(addr, port, cfg); - - { - char *msg = dupprintf("Starting local proxy command: %s", cmd); - /* We're allowed to pass NULL here, because we're part of the Windows - * front end so we know logevent doesn't expect any data. */ - logevent(NULL, msg); - sfree(msg); - } - - ret = snew(struct Socket_localproxy_tag); - ret->fn = &socket_fn_table; - ret->plug = plug; - ret->error = NULL; - - /* - * Create the pipes to the proxy command, and spawn the proxy - * command process. - */ - sa.nLength = sizeof(sa); - sa.lpSecurityDescriptor = NULL; /* default */ - sa.bInheritHandle = TRUE; - if (!CreatePipe(&us_from_cmd, &cmd_to_us, &sa, 0)) { - ret->error = dupprintf("Unable to create pipes for proxy command"); - return (Socket)ret; - } - - if (!CreatePipe(&cmd_from_us, &us_to_cmd, &sa, 0)) { - CloseHandle(us_from_cmd); - CloseHandle(cmd_to_us); - ret->error = dupprintf("Unable to create pipes for proxy command"); - return (Socket)ret; - } - - SetHandleInformation(us_to_cmd, HANDLE_FLAG_INHERIT, 0); - SetHandleInformation(us_from_cmd, HANDLE_FLAG_INHERIT, 0); - - si.cb = sizeof(si); - si.lpReserved = NULL; - si.lpDesktop = NULL; - si.lpTitle = NULL; - si.dwFlags = STARTF_USESTDHANDLES; - si.cbReserved2 = 0; - si.lpReserved2 = NULL; - si.hStdInput = cmd_from_us; - si.hStdOutput = cmd_to_us; - si.hStdError = NULL; - CreateProcess(NULL, cmd, NULL, NULL, TRUE, - CREATE_NO_WINDOW | NORMAL_PRIORITY_CLASS, - NULL, NULL, &si, &pi); - - CloseHandle(cmd_from_us); - CloseHandle(cmd_to_us); - - ret->to_cmd_H = us_to_cmd; - ret->from_cmd_H = us_from_cmd; - - ret->from_cmd_h = handle_input_new(ret->from_cmd_H, localproxy_gotdata, - ret, 0); - ret->to_cmd_h = handle_output_new(ret->to_cmd_H, localproxy_sentdata, - ret, 0); - - /* We are responsible for this and don't need it any more */ - sk_addr_free(addr); - - return (Socket) ret; -} diff --git a/tools/plink/winstore.c b/tools/plink/winstore.c deleted file mode 100644 index b1b3d3a66..000000000 --- a/tools/plink/winstore.c +++ /dev/null @@ -1,656 +0,0 @@ -/* - * winstore.c: Windows-specific implementation of the interface - * defined in storage.h. - */ - -#include -#include -#include -#include "putty.h" -#include "storage.h" - -#include -#ifndef CSIDL_APPDATA -#define CSIDL_APPDATA 0x001a -#endif -#ifndef CSIDL_LOCAL_APPDATA -#define CSIDL_LOCAL_APPDATA 0x001c -#endif - -static const char *const puttystr = PUTTY_REG_POS "\\Sessions"; - -static const char hex[16] = "0123456789ABCDEF"; - -static int tried_shgetfolderpath = FALSE; -static HMODULE shell32_module = NULL; -typedef HRESULT (WINAPI *p_SHGetFolderPath_t) - (HWND, int, HANDLE, DWORD, LPTSTR); -static p_SHGetFolderPath_t p_SHGetFolderPath = NULL; - -static void mungestr(const char *in, char *out) -{ - int candot = 0; - - while (*in) { - if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' || - *in == '%' || *in < ' ' || *in > '~' || (*in == '.' - && !candot)) { - *out++ = '%'; - *out++ = hex[((unsigned char) *in) >> 4]; - *out++ = hex[((unsigned char) *in) & 15]; - } else - *out++ = *in; - in++; - candot = 1; - } - *out = '\0'; - return; -} - -static void unmungestr(const char *in, char *out, int outlen) -{ - while (*in) { - if (*in == '%' && in[1] && in[2]) { - int i, j; - - i = in[1] - '0'; - i -= (i > 9 ? 7 : 0); - j = in[2] - '0'; - j -= (j > 9 ? 7 : 0); - - *out++ = (i << 4) + j; - if (!--outlen) - return; - in += 3; - } else { - *out++ = *in++; - if (!--outlen) - return; - } - } - *out = '\0'; - return; -} - -void *open_settings_w(const char *sessionname, char **errmsg) -{ - HKEY subkey1, sesskey; - int ret; - char *p; - - *errmsg = NULL; - - if (!sessionname || !*sessionname) - sessionname = "Default Settings"; - - p = snewn(3 * strlen(sessionname) + 1, char); - mungestr(sessionname, p); - - ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1); - if (ret != ERROR_SUCCESS) { - sfree(p); - *errmsg = dupprintf("Unable to create registry key\n" - "HKEY_CURRENT_USER\\%s", puttystr); - return NULL; - } - ret = RegCreateKey(subkey1, p, &sesskey); - RegCloseKey(subkey1); - if (ret != ERROR_SUCCESS) { - *errmsg = dupprintf("Unable to create registry key\n" - "HKEY_CURRENT_USER\\%s\\%s", puttystr, p); - sfree(p); - return NULL; - } - sfree(p); - return (void *) sesskey; -} - -void write_setting_s(void *handle, const char *key, const char *value) -{ - if (handle) - RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value, - 1 + strlen(value)); -} - -void write_setting_i(void *handle, const char *key, int value) -{ - if (handle) - RegSetValueEx((HKEY) handle, key, 0, REG_DWORD, - (CONST BYTE *) &value, sizeof(value)); -} - -void close_settings_w(void *handle) -{ - RegCloseKey((HKEY) handle); -} - -void *open_settings_r(const char *sessionname) -{ - HKEY subkey1, sesskey; - char *p; - - if (!sessionname || !*sessionname) - sessionname = "Default Settings"; - - p = snewn(3 * strlen(sessionname) + 1, char); - mungestr(sessionname, p); - - if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) { - sesskey = NULL; - } else { - if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) { - sesskey = NULL; - } - RegCloseKey(subkey1); - } - - sfree(p); - - return (void *) sesskey; -} - -char *read_setting_s(void *handle, const char *key, char *buffer, int buflen) -{ - DWORD type, size; - size = buflen; - - if (!handle || - RegQueryValueEx((HKEY) handle, key, 0, - &type, buffer, &size) != ERROR_SUCCESS || - type != REG_SZ) return NULL; - else - return buffer; -} - -int read_setting_i(void *handle, const char *key, int defvalue) -{ - DWORD type, val, size; - size = sizeof(val); - - if (!handle || - RegQueryValueEx((HKEY) handle, key, 0, &type, - (BYTE *) &val, &size) != ERROR_SUCCESS || - size != sizeof(val) || type != REG_DWORD) - return defvalue; - else - return val; -} - -int read_setting_fontspec(void *handle, const char *name, FontSpec *result) -{ - char *settingname; - FontSpec ret; - - if (!read_setting_s(handle, name, ret.name, sizeof(ret.name))) - return 0; - settingname = dupcat(name, "IsBold", NULL); - ret.isbold = read_setting_i(handle, settingname, -1); - sfree(settingname); - if (ret.isbold == -1) return 0; - settingname = dupcat(name, "CharSet", NULL); - ret.charset = read_setting_i(handle, settingname, -1); - sfree(settingname); - if (ret.charset == -1) return 0; - settingname = dupcat(name, "Height", NULL); - ret.height = read_setting_i(handle, settingname, INT_MIN); - sfree(settingname); - if (ret.height == INT_MIN) return 0; - *result = ret; - return 1; -} - -void write_setting_fontspec(void *handle, const char *name, FontSpec font) -{ - char *settingname; - - write_setting_s(handle, name, font.name); - settingname = dupcat(name, "IsBold", NULL); - write_setting_i(handle, settingname, font.isbold); - sfree(settingname); - settingname = dupcat(name, "CharSet", NULL); - write_setting_i(handle, settingname, font.charset); - sfree(settingname); - settingname = dupcat(name, "Height", NULL); - write_setting_i(handle, settingname, font.height); - sfree(settingname); -} - -int read_setting_filename(void *handle, const char *name, Filename *result) -{ - return !!read_setting_s(handle, name, result->path, sizeof(result->path)); -} - -void write_setting_filename(void *handle, const char *name, Filename result) -{ - write_setting_s(handle, name, result.path); -} - -void close_settings_r(void *handle) -{ - RegCloseKey((HKEY) handle); -} - -void del_settings(const char *sessionname) -{ - HKEY subkey1; - char *p; - - if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) - return; - - p = snewn(3 * strlen(sessionname) + 1, char); - mungestr(sessionname, p); - RegDeleteKey(subkey1, p); - sfree(p); - - RegCloseKey(subkey1); -} - -struct enumsettings { - HKEY key; - int i; -}; - -void *enum_settings_start(void) -{ - struct enumsettings *ret; - HKEY key; - - if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS) - return NULL; - - ret = snew(struct enumsettings); - if (ret) { - ret->key = key; - ret->i = 0; - } - - return ret; -} - -char *enum_settings_next(void *handle, char *buffer, int buflen) -{ - struct enumsettings *e = (struct enumsettings *) handle; - char *otherbuf; - otherbuf = snewn(3 * buflen, char); - if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) { - unmungestr(otherbuf, buffer, buflen); - sfree(otherbuf); - return buffer; - } else { - sfree(otherbuf); - return NULL; - } -} - -void enum_settings_finish(void *handle) -{ - struct enumsettings *e = (struct enumsettings *) handle; - RegCloseKey(e->key); - sfree(e); -} - -static void hostkey_regname(char *buffer, const char *hostname, - int port, const char *keytype) -{ - int len; - strcpy(buffer, keytype); - strcat(buffer, "@"); - len = strlen(buffer); - len += sprintf(buffer + len, "%d:", port); - mungestr(hostname, buffer + strlen(buffer)); -} - -int verify_host_key(const char *hostname, int port, - const char *keytype, const char *key) -{ - char *otherstr, *regname; - int len; - HKEY rkey; - DWORD readlen; - DWORD type; - int ret, compare; - - len = 1 + strlen(key); - - /* - * Now read a saved key in from the registry and see what it - * says. - */ - otherstr = snewn(len, char); - regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); - - hostkey_regname(regname, hostname, port, keytype); - - if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", - &rkey) != ERROR_SUCCESS) - return 1; /* key does not exist in registry */ - - readlen = len; - ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen); - - if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA && - !strcmp(keytype, "rsa")) { - /* - * Key didn't exist. If the key type is RSA, we'll try - * another trick, which is to look up the _old_ key format - * under just the hostname and translate that. - */ - char *justhost = regname + 1 + strcspn(regname, ":"); - char *oldstyle = snewn(len + 10, char); /* safety margin */ - readlen = len; - ret = RegQueryValueEx(rkey, justhost, NULL, &type, - oldstyle, &readlen); - - if (ret == ERROR_SUCCESS && type == REG_SZ) { - /* - * The old format is two old-style bignums separated by - * a slash. An old-style bignum is made of groups of - * four hex digits: digits are ordered in sensible - * (most to least significant) order within each group, - * but groups are ordered in silly (least to most) - * order within the bignum. The new format is two - * ordinary C-format hex numbers (0xABCDEFG...XYZ, with - * A nonzero except in the special case 0x0, which - * doesn't appear anyway in RSA keys) separated by a - * comma. All hex digits are lowercase in both formats. - */ - char *p = otherstr; - char *q = oldstyle; - int i, j; - - for (i = 0; i < 2; i++) { - int ndigits, nwords; - *p++ = '0'; - *p++ = 'x'; - ndigits = strcspn(q, "/"); /* find / or end of string */ - nwords = ndigits / 4; - /* now trim ndigits to remove leading zeros */ - while (q[(ndigits - 1) ^ 3] == '0' && ndigits > 1) - ndigits--; - /* now move digits over to new string */ - for (j = 0; j < ndigits; j++) - p[ndigits - 1 - j] = q[j ^ 3]; - p += ndigits; - q += nwords * 4; - if (*q) { - q++; /* eat the slash */ - *p++ = ','; /* add a comma */ - } - *p = '\0'; /* terminate the string */ - } - - /* - * Now _if_ this key matches, we'll enter it in the new - * format. If not, we'll assume something odd went - * wrong, and hyper-cautiously do nothing. - */ - if (!strcmp(otherstr, key)) - RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr, - strlen(otherstr) + 1); - } - } - - RegCloseKey(rkey); - - compare = strcmp(otherstr, key); - - sfree(otherstr); - sfree(regname); - - if (ret == ERROR_MORE_DATA || - (ret == ERROR_SUCCESS && type == REG_SZ && compare)) - return 2; /* key is different in registry */ - else if (ret != ERROR_SUCCESS || type != REG_SZ) - return 1; /* key does not exist in registry */ - else - return 0; /* key matched OK in registry */ -} - -void store_host_key(const char *hostname, int port, - const char *keytype, const char *key) -{ - char *regname; - HKEY rkey; - - regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); - - hostkey_regname(regname, hostname, port, keytype); - - if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", - &rkey) == ERROR_SUCCESS) { - RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1); - RegCloseKey(rkey); - } /* else key does not exist in registry */ - - sfree(regname); -} - -/* - * Open (or delete) the random seed file. - */ -enum { DEL, OPEN_R, OPEN_W }; -static int try_random_seed(char const *path, int action, HANDLE *ret) -{ - if (action == DEL) { - remove(path); - *ret = INVALID_HANDLE_VALUE; - return FALSE; /* so we'll do the next ones too */ - } - - *ret = CreateFile(path, - action == OPEN_W ? GENERIC_WRITE : GENERIC_READ, - action == OPEN_W ? 0 : (FILE_SHARE_READ | - FILE_SHARE_WRITE), - NULL, - action == OPEN_W ? CREATE_ALWAYS : OPEN_EXISTING, - action == OPEN_W ? FILE_ATTRIBUTE_NORMAL : 0, - NULL); - - return (*ret != INVALID_HANDLE_VALUE); -} - -static HANDLE access_random_seed(int action) -{ - HKEY rkey; - DWORD type, size; - HANDLE rethandle; - char seedpath[2 * MAX_PATH + 10] = "\0"; - - /* - * Iterate over a selection of possible random seed paths until - * we find one that works. - * - * We do this iteration separately for reading and writing, - * meaning that we will automatically migrate random seed files - * if a better location becomes available (by reading from the - * best location in which we actually find one, and then - * writing to the best location in which we can _create_ one). - */ - - /* - * First, try the location specified by the user in the - * Registry, if any. - */ - size = sizeof(seedpath); - if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) == - ERROR_SUCCESS) { - int ret = RegQueryValueEx(rkey, "RandSeedFile", - 0, &type, seedpath, &size); - if (ret != ERROR_SUCCESS || type != REG_SZ) - seedpath[0] = '\0'; - RegCloseKey(rkey); - - if (*seedpath && try_random_seed(seedpath, action, &rethandle)) - return rethandle; - } - - /* - * Next, try the user's local Application Data directory, - * followed by their non-local one. This is found using the - * SHGetFolderPath function, which won't be present on all - * versions of Windows. - */ - if (!tried_shgetfolderpath) { - /* This is likely only to bear fruit on systems with IE5+ - * installed, or WinMe/2K+. There is some faffing with - * SHFOLDER.DLL we could do to try to find an equivalent - * on older versions of Windows if we cared enough. - * However, the invocation below requires IE5+ anyway, - * so stuff that. */ - shell32_module = LoadLibrary("SHELL32.DLL"); - if (shell32_module) { - p_SHGetFolderPath = (p_SHGetFolderPath_t) - GetProcAddress(shell32_module, "SHGetFolderPathA"); - } - } - if (p_SHGetFolderPath) { - if (SUCCEEDED(p_SHGetFolderPath(NULL, CSIDL_LOCAL_APPDATA, - NULL, SHGFP_TYPE_CURRENT, seedpath))) { - strcat(seedpath, "\\PUTTY.RND"); - if (try_random_seed(seedpath, action, &rethandle)) - return rethandle; - } - - if (SUCCEEDED(p_SHGetFolderPath(NULL, CSIDL_APPDATA, - NULL, SHGFP_TYPE_CURRENT, seedpath))) { - strcat(seedpath, "\\PUTTY.RND"); - if (try_random_seed(seedpath, action, &rethandle)) - return rethandle; - } - } - - /* - * Failing that, try %HOMEDRIVE%%HOMEPATH% as a guess at the - * user's home directory. - */ - { - int len, ret; - - len = - GetEnvironmentVariable("HOMEDRIVE", seedpath, - sizeof(seedpath)); - ret = - GetEnvironmentVariable("HOMEPATH", seedpath + len, - sizeof(seedpath) - len); - if (ret != 0) { - strcat(seedpath, "\\PUTTY.RND"); - if (try_random_seed(seedpath, action, &rethandle)) - return rethandle; - } - } - - /* - * And finally, fall back to C:\WINDOWS. - */ - GetWindowsDirectory(seedpath, sizeof(seedpath)); - strcat(seedpath, "\\PUTTY.RND"); - if (try_random_seed(seedpath, action, &rethandle)) - return rethandle; - - /* - * If even that failed, give up. - */ - return INVALID_HANDLE_VALUE; -} - -void read_random_seed(noise_consumer_t consumer) -{ - HANDLE seedf = access_random_seed(OPEN_R); - - if (seedf != INVALID_HANDLE_VALUE) { - while (1) { - char buf[1024]; - DWORD len; - - if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len) - consumer(buf, len); - else - break; - } - CloseHandle(seedf); - } -} - -void write_random_seed(void *data, int len) -{ - HANDLE seedf = access_random_seed(OPEN_W); - - if (seedf != INVALID_HANDLE_VALUE) { - DWORD lenwritten; - - WriteFile(seedf, data, len, &lenwritten, NULL); - CloseHandle(seedf); - } -} - -/* - * Recursively delete a registry key and everything under it. - */ -static void registry_recursive_remove(HKEY key) -{ - DWORD i; - char name[MAX_PATH + 1]; - HKEY subkey; - - i = 0; - while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) { - if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) { - registry_recursive_remove(subkey); - RegCloseKey(subkey); - } - RegDeleteKey(key, name); - } -} - -void cleanup_all(void) -{ - HKEY key; - int ret; - char name[MAX_PATH + 1]; - - /* ------------------------------------------------------------ - * Wipe out the random seed file, in all of its possible - * locations. - */ - access_random_seed(DEL); - - /* ------------------------------------------------------------ - * Destroy all registry information associated with PuTTY. - */ - - /* - * Open the main PuTTY registry key and remove everything in it. - */ - if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) == - ERROR_SUCCESS) { - registry_recursive_remove(key); - RegCloseKey(key); - } - /* - * Now open the parent key and remove the PuTTY main key. Once - * we've done that, see if the parent key has any other - * children. - */ - if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT, - &key) == ERROR_SUCCESS) { - RegDeleteKey(key, PUTTY_REG_PARENT_CHILD); - ret = RegEnumKey(key, 0, name, sizeof(name)); - RegCloseKey(key); - /* - * If the parent key had no other children, we must delete - * it in its turn. That means opening the _grandparent_ - * key. - */ - if (ret != ERROR_SUCCESS) { - if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_GPARENT, - &key) == ERROR_SUCCESS) { - RegDeleteKey(key, PUTTY_REG_GPARENT_CHILD); - RegCloseKey(key); - } - } - } - /* - * Now we're done. - */ -} diff --git a/tools/plink/winstuff.h b/tools/plink/winstuff.h deleted file mode 100644 index 09a515a62..000000000 --- a/tools/plink/winstuff.h +++ /dev/null @@ -1,467 +0,0 @@ -/* - * winstuff.h: Windows-specific inter-module stuff. - */ - -#ifndef PUTTY_WINSTUFF_H -#define PUTTY_WINSTUFF_H - -#ifndef AUTO_WINSOCK -#include -#endif -#include -#include /* for FILENAME_MAX */ - -#include "tree234.h" - -#include "winhelp.h" - -struct Filename { - char path[FILENAME_MAX]; -}; -#define f_open(filename, mode, isprivate) ( fopen((filename).path, (mode)) ) - -struct FontSpec { - char name[64]; - int isbold; - int height; - int charset; -}; - -#ifndef CLEARTYPE_QUALITY -#define CLEARTYPE_QUALITY 5 -#endif -#define FONT_QUALITY(fq) ( \ - (fq) == FQ_DEFAULT ? DEFAULT_QUALITY : \ - (fq) == FQ_ANTIALIASED ? ANTIALIASED_QUALITY : \ - (fq) == FQ_NONANTIALIASED ? NONANTIALIASED_QUALITY : \ - CLEARTYPE_QUALITY) - -#define PLATFORM_IS_UTF16 /* enable UTF-16 processing when exchanging - * wchar_t strings with environment */ - -/* - * Where we can, we use GetWindowLongPtr and friends because they're - * more useful on 64-bit platforms, but they're a relatively recent - * innovation, missing from VC++ 6 and older MinGW. Degrade nicely. - * (NB that on some systems, some of these things are available but - * not others...) - */ - -#ifndef GCLP_HCURSOR -/* GetClassLongPtr and friends */ -#undef GetClassLongPtr -#define GetClassLongPtr GetClassLong -#undef SetClassLongPtr -#define SetClassLongPtr SetClassLong -#define GCLP_HCURSOR GCL_HCURSOR -/* GetWindowLongPtr and friends */ -#undef GetWindowLongPtr -#define GetWindowLongPtr GetWindowLong -#undef SetWindowLongPtr -#define SetWindowLongPtr SetWindowLong -#undef GWLP_USERDATA -#define GWLP_USERDATA GWL_USERDATA -#undef DWLP_MSGRESULT -#define DWLP_MSGRESULT DWL_MSGRESULT -/* Since we've clobbered the above functions, we should clobber the - * associated type regardless of whether it's defined. */ -#undef LONG_PTR -#define LONG_PTR LONG -#endif - -#define BOXFLAGS DLGWINDOWEXTRA -#define BOXRESULT (DLGWINDOWEXTRA + sizeof(LONG_PTR)) -#define DF_END 0x0001 - -/* - * Global variables. Most modules declare these `extern', but - * window.c will do `#define PUTTY_DO_GLOBALS' before including this - * module, and so will get them properly defined. -*/ -#ifndef GLOBAL -#ifdef PUTTY_DO_GLOBALS -#define GLOBAL -#else -#define GLOBAL extern -#endif -#endif - -#ifndef DONE_TYPEDEFS -#define DONE_TYPEDEFS -typedef struct config_tag Config; -typedef struct backend_tag Backend; -typedef struct terminal_tag Terminal; -#endif - -#define PUTTY_REG_POS "Software\\SimonTatham\\PuTTY" -#define PUTTY_REG_PARENT "Software\\SimonTatham" -#define PUTTY_REG_PARENT_CHILD "PuTTY" -#define PUTTY_REG_GPARENT "Software" -#define PUTTY_REG_GPARENT_CHILD "SimonTatham" - -#define PUTTY_HELP_FILE "putty.hlp" -#define PUTTY_CHM_FILE "putty.chm" -#define PUTTY_HELP_CONTENTS "putty.cnt" - -#define GETTICKCOUNT GetTickCount -#define CURSORBLINK GetCaretBlinkTime() -#define TICKSPERSEC 1000 /* GetTickCount returns milliseconds */ - -#define DEFAULT_CODEPAGE CP_ACP - -typedef HDC Context; - -#ifndef NO_GSSAPI -/* - * GSS-API stuff - */ -typedef struct Ssh_gss_buf { - int length; - char *value; -} Ssh_gss_buf; - -#define SSH_GSS_EMPTY_BUF (Ssh_gss_buf) {0,NULL} -typedef void *Ssh_gss_name; -#endif - -/* - * Window handles for the windows that can be running during a - * PuTTY session. - */ -GLOBAL HWND hwnd; /* the main terminal window */ -GLOBAL HWND logbox; - -/* - * The all-important instance handle. - */ -GLOBAL HINSTANCE hinst; - -/* - * Help file stuff in winhelp.c. - */ -void init_help(void); -void shutdown_help(void); -int has_help(void); -void launch_help(HWND hwnd, const char *topic); -void quit_help(HWND hwnd); - -/* - * The terminal and logging context are notionally local to the - * Windows front end, but they must be shared between window.c and - * windlg.c. Likewise the saved-sessions list. - */ -GLOBAL Terminal *term; -GLOBAL void *logctx; - -#define WM_NETEVENT (WM_APP + 5) - -/* - * On Windows, we send MA_2CLK as the only event marking the second - * press of a mouse button. Compare unix.h. - */ -#define MULTICLICK_ONLY_EVENT 1 - -/* - * On Windows, data written to the clipboard must be NUL-terminated. - */ -#define SELECTION_NUL_TERMINATED 1 - -/* - * On Windows, copying to the clipboard terminates lines with CRLF. - */ -#define SEL_NL { 13, 10 } - -/* - * sk_getxdmdata() does not exist under Windows (not that I - * couldn't write it if I wanted to, but I haven't bothered), so - * it's a macro which always returns NULL. With any luck this will - * cause the compiler to notice it can optimise away the - * implementation of XDM-AUTHORIZATION-1 in x11fwd.c :-) - */ -#define sk_getxdmdata(socket, lenp) (NULL) - -/* - * File-selector filter strings used in the config box. On Windows, - * these strings are of exactly the type needed to go in - * `lpstrFilter' in an OPENFILENAME structure. - */ -#define FILTER_KEY_FILES ("PuTTY Private Key Files (*.ppk)\0*.ppk\0" \ - "All Files (*.*)\0*\0\0\0") -#define FILTER_WAVE_FILES ("Wave Files (*.wav)\0*.WAV\0" \ - "All Files (*.*)\0*\0\0\0") - -/* - * On some versions of Windows, it has been known for WM_TIMER to - * occasionally get its callback time simply wrong, and call us - * back several minutes early. Defining these symbols enables - * compensation code in timing.c. - */ -#define TIMING_SYNC -#define TIMING_SYNC_TICKCOUNT - -/* - * winnet.c dynamically loads WinSock 2 or WinSock 1 depending on - * what it can get, which means any WinSock routines used outside - * that module must be exported from it as function pointers. So - * here they are. - */ -extern int (WINAPI *p_WSAAsyncSelect) - (SOCKET s, HWND hWnd, u_int wMsg, long lEvent); -extern int (WINAPI *p_WSAEventSelect) - (SOCKET s, WSAEVENT hEventObject, long lNetworkEvents); -extern int (WINAPI *p_select) - (int nfds, fd_set FAR * readfds, fd_set FAR * writefds, - fd_set FAR *exceptfds, const struct timeval FAR * timeout); -extern int (WINAPI *p_WSAGetLastError)(void); -extern int (WINAPI *p_WSAEnumNetworkEvents) - (SOCKET s, WSAEVENT hEventObject, LPWSANETWORKEVENTS lpNetworkEvents); - -extern int socket_writable(SOCKET skt); - -extern void socket_reselect_all(void); - -/* - * Exports from winctrls.c. - */ - -struct ctlpos { - HWND hwnd; - WPARAM font; - int dlu4inpix; - int ypos, width; - int xoff; - int boxystart, boxid; - char *boxtext; -}; - -/* - * Exports from winutils.c. - */ -typedef struct filereq_tag filereq; /* cwd for file requester */ -BOOL request_file(filereq *state, OPENFILENAME *of, int preserve, int save); -filereq *filereq_new(void); -void filereq_free(filereq *state); -int message_box(LPCTSTR text, LPCTSTR caption, DWORD style, DWORD helpctxid); -void split_into_argv(char *, int *, char ***, char ***); - -/* - * Private structure for prefslist state. Only in the header file - * so that we can delegate allocation to callers. - */ -struct prefslist { - int listid, upbid, dnbid; - int srcitem; - int dummyitem; - int dragging; -}; - -/* - * This structure is passed to event handler functions as the `dlg' - * parameter, and hence is passed back to winctrls access functions. - */ -struct dlgparam { - HWND hwnd; /* the hwnd of the dialog box */ - struct winctrls *controltrees[8]; /* can have several of these */ - int nctrltrees; - char *wintitle; /* title of actual window */ - char *errtitle; /* title of error sub-messageboxes */ - void *data; /* data to pass in refresh events */ - union control *focused, *lastfocused; /* which ctrl has focus now/before */ - char shortcuts[128]; /* track which shortcuts in use */ - int coloursel_wanted; /* has an event handler asked for - * a colour selector? */ - struct { unsigned char r, g, b, ok; } coloursel_result; /* 0-255 */ - tree234 *privdata; /* stores per-control private data */ - int ended, endresult; /* has the dialog been ended? */ -}; - -/* - * Exports from winctrls.c. - */ -void ctlposinit(struct ctlpos *cp, HWND hwnd, - int leftborder, int rightborder, int topborder); -HWND doctl(struct ctlpos *cp, RECT r, - char *wclass, int wstyle, int exstyle, char *wtext, int wid); -void bartitle(struct ctlpos *cp, char *name, int id); -void beginbox(struct ctlpos *cp, char *name, int idbox); -void endbox(struct ctlpos *cp); -void editboxfw(struct ctlpos *cp, int password, char *text, - int staticid, int editid); -void radioline(struct ctlpos *cp, char *text, int id, int nacross, ...); -void bareradioline(struct ctlpos *cp, int nacross, ...); -void radiobig(struct ctlpos *cp, char *text, int id, ...); -void checkbox(struct ctlpos *cp, char *text, int id); -void statictext(struct ctlpos *cp, char *text, int lines, int id); -void staticbtn(struct ctlpos *cp, char *stext, int sid, - char *btext, int bid); -void static2btn(struct ctlpos *cp, char *stext, int sid, - char *btext1, int bid1, char *btext2, int bid2); -void staticedit(struct ctlpos *cp, char *stext, - int sid, int eid, int percentedit); -void staticddl(struct ctlpos *cp, char *stext, - int sid, int lid, int percentlist); -void combobox(struct ctlpos *cp, char *text, int staticid, int listid); -void staticpassedit(struct ctlpos *cp, char *stext, - int sid, int eid, int percentedit); -void bigeditctrl(struct ctlpos *cp, char *stext, - int sid, int eid, int lines); -void ersatztab(struct ctlpos *cp, char *stext, int sid, int lid, int s2id); -void editbutton(struct ctlpos *cp, char *stext, int sid, - int eid, char *btext, int bid); -void sesssaver(struct ctlpos *cp, char *text, - int staticid, int editid, int listid, ...); -void envsetter(struct ctlpos *cp, char *stext, int sid, - char *e1stext, int e1sid, int e1id, - char *e2stext, int e2sid, int e2id, - int listid, char *b1text, int b1id, char *b2text, int b2id); -void charclass(struct ctlpos *cp, char *stext, int sid, int listid, - char *btext, int bid, int eid, char *s2text, int s2id); -void colouredit(struct ctlpos *cp, char *stext, int sid, int listid, - char *btext, int bid, ...); -void prefslist(struct prefslist *hdl, struct ctlpos *cp, int lines, - char *stext, int sid, int listid, int upbid, int dnbid); -int handle_prefslist(struct prefslist *hdl, - int *array, int maxmemb, - int is_dlmsg, HWND hwnd, - WPARAM wParam, LPARAM lParam); -void progressbar(struct ctlpos *cp, int id); -void fwdsetter(struct ctlpos *cp, int listid, char *stext, int sid, - char *e1stext, int e1sid, int e1id, - char *e2stext, int e2sid, int e2id, - char *btext, int bid, - char *r1text, int r1id, char *r2text, int r2id); - -#define MAX_SHORTCUTS_PER_CTRL 16 - -/* - * This structure is what's stored for each `union control' in the - * portable-dialog interface. - */ -struct winctrl { - union control *ctrl; - /* - * The control may have several components at the Windows - * level, with different dialog IDs. To avoid needing N - * separate platformsidectrl structures (which could be stored - * separately in a tree234 so that lookup by ID worked), we - * impose the constraint that those IDs must be in a contiguous - * block. - */ - int base_id; - int num_ids; - /* - * Remember what keyboard shortcuts were used by this control, - * so that when we remove it again we can take them out of the - * list in the dlgparam. - */ - char shortcuts[MAX_SHORTCUTS_PER_CTRL]; - /* - * Some controls need a piece of allocated memory in which to - * store temporary data about the control. - */ - void *data; -}; -/* - * And this structure holds a set of the above, in two separate - * tree234s so that it can find an item by `union control' or by - * dialog ID. - */ -struct winctrls { - tree234 *byctrl, *byid; -}; -struct controlset; -struct controlbox; - -void winctrl_init(struct winctrls *); -void winctrl_cleanup(struct winctrls *); -void winctrl_add(struct winctrls *, struct winctrl *); -void winctrl_remove(struct winctrls *, struct winctrl *); -struct winctrl *winctrl_findbyctrl(struct winctrls *, union control *); -struct winctrl *winctrl_findbyid(struct winctrls *, int); -struct winctrl *winctrl_findbyindex(struct winctrls *, int); -void winctrl_layout(struct dlgparam *dp, struct winctrls *wc, - struct ctlpos *cp, struct controlset *s, int *id); -int winctrl_handle_command(struct dlgparam *dp, UINT msg, - WPARAM wParam, LPARAM lParam); -void winctrl_rem_shortcuts(struct dlgparam *dp, struct winctrl *c); -int winctrl_context_help(struct dlgparam *dp, HWND hwnd, int id); - -void dp_init(struct dlgparam *dp); -void dp_add_tree(struct dlgparam *dp, struct winctrls *tree); -void dp_cleanup(struct dlgparam *dp); - -/* - * Exports from wincfg.c. - */ -void win_setup_config_box(struct controlbox *b, HWND *hwndp, int has_help, - int midsession, int protocol); - -/* - * Exports from windlg.c. - */ -void defuse_showwindow(void); -int do_config(void); -int do_reconfig(HWND, int); -void showeventlog(HWND); -void showabout(HWND); -void force_normal(HWND hwnd); -void modal_about_box(HWND hwnd); -void show_help(HWND hwnd); - -/* - * Exports from winmisc.c. - */ -extern OSVERSIONINFO osVersion; -BOOL init_winver(void); - -/* - * Exports from sizetip.c. - */ -void UpdateSizeTip(HWND src, int cx, int cy); -void EnableSizeTip(int bEnable); - -/* - * Exports from unicode.c. - */ -struct unicode_data; -void init_ucs(Config *, struct unicode_data *); - -/* - * Exports from winhandl.c. - */ -#define HANDLE_FLAG_OVERLAPPED 1 -#define HANDLE_FLAG_IGNOREEOF 2 -#define HANDLE_FLAG_UNITBUFFER 4 -struct handle; -typedef int (*handle_inputfn_t)(struct handle *h, void *data, int len); -typedef void (*handle_outputfn_t)(struct handle *h, int new_backlog); -struct handle *handle_input_new(HANDLE handle, handle_inputfn_t gotdata, - void *privdata, int flags); -struct handle *handle_output_new(HANDLE handle, handle_outputfn_t sentdata, - void *privdata, int flags); -int handle_write(struct handle *h, const void *data, int len); -HANDLE *handle_get_events(int *nevents); -void handle_free(struct handle *h); -void handle_got_event(HANDLE event); -void handle_unthrottle(struct handle *h, int backlog); -int handle_backlog(struct handle *h); -void *handle_get_privdata(struct handle *h); - -/* - * pageantc.c needs to schedule callbacks for asynchronous agent - * requests. This has to be done differently in GUI and console, so - * there's an exported function used for the purpose. - * - * Also, we supply FLAG_SYNCAGENT to force agent requests to be - * synchronous in pscp and psftp. - */ -void agent_schedule_callback(void (*callback)(void *, void *, int), - void *callback_ctx, void *data, int len); -#define FLAG_SYNCAGENT 0x1000 - -/* - * Exports from winser.c. - */ -extern Backend serial_backend; - -#endif diff --git a/tools/plink/winx11.c b/tools/plink/winx11.c deleted file mode 100644 index c8951b086..000000000 --- a/tools/plink/winx11.c +++ /dev/null @@ -1,18 +0,0 @@ -/* - * winx11.c: fetch local auth data for X forwarding. - */ - -#include -#include -#include - -#include "putty.h" -#include "ssh.h" - -void platform_get_x11_auth(struct X11Display *disp, const Config *cfg) -{ - if (cfg->xauthfile.path[0]) - x11_get_auth_from_authfile(disp, cfg->xauthfile.path); -} - -const int platform_uses_x11_unix_by_default = FALSE; diff --git a/tools/plink/x11fwd.c b/tools/plink/x11fwd.c deleted file mode 100644 index 9f22a2364..000000000 --- a/tools/plink/x11fwd.c +++ /dev/null @@ -1,791 +0,0 @@ -/* - * Platform-independent bits of X11 forwarding. - */ - -#include -#include -#include -#include - -#include "putty.h" -#include "ssh.h" -#include "tree234.h" - -#define GET_16BIT(endian, cp) \ - (endian=='B' ? GET_16BIT_MSB_FIRST(cp) : GET_16BIT_LSB_FIRST(cp)) - -#define PUT_16BIT(endian, cp, val) \ - (endian=='B' ? PUT_16BIT_MSB_FIRST(cp, val) : PUT_16BIT_LSB_FIRST(cp, val)) - -const char *const x11_authnames[] = { - "", "MIT-MAGIC-COOKIE-1", "XDM-AUTHORIZATION-1" -}; - -struct XDMSeen { - unsigned int time; - unsigned char clientid[6]; -}; - -struct X11Private { - const struct plug_function_table *fn; - /* the above variable absolutely *must* be the first in this structure */ - unsigned char firstpkt[12]; /* first X data packet */ - struct X11Display *disp; - char *auth_protocol; - unsigned char *auth_data; - int data_read, auth_plen, auth_psize, auth_dlen, auth_dsize; - int verified; - int throttled, throttle_override; - unsigned long peer_ip; - int peer_port; - void *c; /* data used by ssh.c */ - Socket s; -}; - -static int xdmseen_cmp(void *a, void *b) -{ - struct XDMSeen *sa = a, *sb = b; - return sa->time > sb->time ? 1 : - sa->time < sb->time ? -1 : - memcmp(sa->clientid, sb->clientid, sizeof(sa->clientid)); -} - -/* Do-nothing "plug" implementation, used by x11_setup_display() when it - * creates a trial connection (and then immediately closes it). - * XXX: bit out of place here, could in principle live in a platform- - * independent network.c or something */ -static void dummy_plug_log(Plug p, int type, SockAddr addr, int port, - const char *error_msg, int error_code) { } -static int dummy_plug_closing - (Plug p, const char *error_msg, int error_code, int calling_back) -{ return 1; } -static int dummy_plug_receive(Plug p, int urgent, char *data, int len) -{ return 1; } -static void dummy_plug_sent(Plug p, int bufsize) { } -static int dummy_plug_accepting(Plug p, OSSocket sock) { return 1; } -static const struct plug_function_table dummy_plug = { - dummy_plug_log, dummy_plug_closing, dummy_plug_receive, - dummy_plug_sent, dummy_plug_accepting -}; - -struct X11Display *x11_setup_display(char *display, int authtype, - const Config *cfg) -{ - struct X11Display *disp = snew(struct X11Display); - char *localcopy; - int i; - - if (!display || !*display) { - localcopy = platform_get_x_display(); - if (!localcopy || !*localcopy) { - sfree(localcopy); - localcopy = dupstr(":0"); /* plausible default for any platform */ - } - } else - localcopy = dupstr(display); - - /* - * Parse the display name. - * - * We expect this to have one of the following forms: - * - * - the standard X format which looks like - * [ [ protocol '/' ] host ] ':' displaynumber [ '.' screennumber ] - * (X11 also permits a double colon to indicate DECnet, but - * that's not our problem, thankfully!) - * - * - only seen in the wild on MacOS (so far): a pathname to a - * Unix-domain socket, which will typically and confusingly - * end in ":0", and which I'm currently distinguishing from - * the standard scheme by noting that it starts with '/'. - */ - if (localcopy[0] == '/') { - disp->unixsocketpath = localcopy; - disp->unixdomain = TRUE; - disp->hostname = NULL; - disp->displaynum = -1; - disp->screennum = 0; - disp->addr = NULL; - } else { - char *colon, *dot, *slash; - char *protocol, *hostname; - - colon = strrchr(localcopy, ':'); - if (!colon) { - sfree(disp); - sfree(localcopy); - return NULL; /* FIXME: report a specific error? */ - } - - *colon++ = '\0'; - dot = strchr(colon, '.'); - if (dot) - *dot++ = '\0'; - - disp->displaynum = atoi(colon); - if (dot) - disp->screennum = atoi(dot); - else - disp->screennum = 0; - - protocol = NULL; - hostname = localcopy; - if (colon > localcopy) { - slash = strchr(localcopy, '/'); - if (slash) { - *slash++ = '\0'; - protocol = localcopy; - hostname = slash; - } - } - - disp->hostname = *hostname ? dupstr(hostname) : NULL; - - if (protocol) - disp->unixdomain = (!strcmp(protocol, "local") || - !strcmp(protocol, "unix")); - else if (!*hostname || !strcmp(hostname, "unix")) - disp->unixdomain = platform_uses_x11_unix_by_default; - else - disp->unixdomain = FALSE; - - if (!disp->hostname && !disp->unixdomain) - disp->hostname = dupstr("localhost"); - - disp->unixsocketpath = NULL; - disp->addr = NULL; - - sfree(localcopy); - } - - /* - * Look up the display hostname, if we need to. - */ - if (!disp->unixdomain) { - const char *err; - - disp->port = 6000 + disp->displaynum; - disp->addr = name_lookup(disp->hostname, disp->port, - &disp->realhost, cfg, ADDRTYPE_UNSPEC); - - if ((err = sk_addr_error(disp->addr)) != NULL) { - sk_addr_free(disp->addr); - sfree(disp->hostname); - sfree(disp->unixsocketpath); - return NULL; /* FIXME: report an error */ - } - } - - /* - * Try upgrading an IP-style localhost display to a Unix-socket - * display (as the standard X connection libraries do). - */ - if (!disp->unixdomain && sk_address_is_local(disp->addr)) { - SockAddr ux = platform_get_x11_unix_address(NULL, disp->displaynum); - const char *err = sk_addr_error(ux); - if (!err) { - /* Create trial connection to see if there is a useful Unix-domain - * socket */ - const struct plug_function_table *dummy = &dummy_plug; - Socket s = sk_new(sk_addr_dup(ux), 0, 0, 0, 0, 0, (Plug)&dummy); - err = sk_socket_error(s); - sk_close(s); - } - if (err) { - sk_addr_free(ux); - } else { - sk_addr_free(disp->addr); - disp->unixdomain = TRUE; - disp->addr = ux; - /* Fill in the rest in a moment */ - } - } - - if (disp->unixdomain) { - if (!disp->addr) - disp->addr = platform_get_x11_unix_address(disp->unixsocketpath, - disp->displaynum); - if (disp->unixsocketpath) - disp->realhost = dupstr(disp->unixsocketpath); - else - disp->realhost = dupprintf("unix:%d", disp->displaynum); - disp->port = 0; - } - - /* - * Invent the remote authorisation details. - */ - if (authtype == X11_MIT) { - disp->remoteauthproto = X11_MIT; - - /* MIT-MAGIC-COOKIE-1. Cookie size is 128 bits (16 bytes). */ - disp->remoteauthdata = snewn(16, unsigned char); - for (i = 0; i < 16; i++) - disp->remoteauthdata[i] = random_byte(); - disp->remoteauthdatalen = 16; - - disp->xdmseen = NULL; - } else { - assert(authtype == X11_XDM); - disp->remoteauthproto = X11_XDM; - - /* XDM-AUTHORIZATION-1. Cookie size is 16 bytes; byte 8 is zero. */ - disp->remoteauthdata = snewn(16, unsigned char); - for (i = 0; i < 16; i++) - disp->remoteauthdata[i] = (i == 8 ? 0 : random_byte()); - disp->remoteauthdatalen = 16; - - disp->xdmseen = newtree234(xdmseen_cmp); - } - disp->remoteauthprotoname = dupstr(x11_authnames[disp->remoteauthproto]); - disp->remoteauthdatastring = snewn(disp->remoteauthdatalen * 2 + 1, char); - for (i = 0; i < disp->remoteauthdatalen; i++) - sprintf(disp->remoteauthdatastring + i*2, "%02x", - disp->remoteauthdata[i]); - - /* - * Fetch the local authorisation details. - */ - disp->localauthproto = X11_NO_AUTH; - disp->localauthdata = NULL; - disp->localauthdatalen = 0; - platform_get_x11_auth(disp, cfg); - - return disp; -} - -void x11_free_display(struct X11Display *disp) -{ - if (disp->xdmseen != NULL) { - struct XDMSeen *seen; - while ((seen = delpos234(disp->xdmseen, 0)) != NULL) - sfree(seen); - freetree234(disp->xdmseen); - } - sfree(disp->hostname); - sfree(disp->unixsocketpath); - if (disp->localauthdata) - memset(disp->localauthdata, 0, disp->localauthdatalen); - sfree(disp->localauthdata); - if (disp->remoteauthdata) - memset(disp->remoteauthdata, 0, disp->remoteauthdatalen); - sfree(disp->remoteauthdata); - sfree(disp->remoteauthprotoname); - sfree(disp->remoteauthdatastring); - sk_addr_free(disp->addr); - sfree(disp); -} - -#define XDM_MAXSKEW 20*60 /* 20 minute clock skew should be OK */ - -static char *x11_verify(unsigned long peer_ip, int peer_port, - struct X11Display *disp, char *proto, - unsigned char *data, int dlen) -{ - if (strcmp(proto, x11_authnames[disp->remoteauthproto]) != 0) - return "wrong authorisation protocol attempted"; - if (disp->remoteauthproto == X11_MIT) { - if (dlen != disp->remoteauthdatalen) - return "MIT-MAGIC-COOKIE-1 data was wrong length"; - if (memcmp(disp->remoteauthdata, data, dlen) != 0) - return "MIT-MAGIC-COOKIE-1 data did not match"; - } - if (disp->remoteauthproto == X11_XDM) { - unsigned long t; - time_t tim; - int i; - struct XDMSeen *seen, *ret; - - if (dlen != 24) - return "XDM-AUTHORIZATION-1 data was wrong length"; - if (peer_port == -1) - return "cannot do XDM-AUTHORIZATION-1 without remote address data"; - des_decrypt_xdmauth(disp->remoteauthdata+9, data, 24); - if (memcmp(disp->remoteauthdata, data, 8) != 0) - return "XDM-AUTHORIZATION-1 data failed check"; /* cookie wrong */ - if (GET_32BIT_MSB_FIRST(data+8) != peer_ip) - return "XDM-AUTHORIZATION-1 data failed check"; /* IP wrong */ - if ((int)GET_16BIT_MSB_FIRST(data+12) != peer_port) - return "XDM-AUTHORIZATION-1 data failed check"; /* port wrong */ - t = GET_32BIT_MSB_FIRST(data+14); - for (i = 18; i < 24; i++) - if (data[i] != 0) /* zero padding wrong */ - return "XDM-AUTHORIZATION-1 data failed check"; - tim = time(NULL); - if (abs(t - tim) > XDM_MAXSKEW) - return "XDM-AUTHORIZATION-1 time stamp was too far out"; - seen = snew(struct XDMSeen); - seen->time = t; - memcpy(seen->clientid, data+8, 6); - assert(disp->xdmseen != NULL); - ret = add234(disp->xdmseen, seen); - if (ret != seen) { - sfree(seen); - return "XDM-AUTHORIZATION-1 data replayed"; - } - /* While we're here, purge entries too old to be replayed. */ - for (;;) { - seen = index234(disp->xdmseen, 0); - assert(seen != NULL); - if (t - seen->time <= XDM_MAXSKEW) - break; - sfree(delpos234(disp->xdmseen, 0)); - } - } - /* implement other protocols here if ever required */ - return NULL; -} - -void x11_get_auth_from_authfile(struct X11Display *disp, - const char *authfilename) -{ - FILE *authfp; - char *buf, *ptr, *str[4]; - int len[4]; - int family, protocol; - int ideal_match = FALSE; - char *ourhostname = get_hostname(); - - /* - * Normally we should look for precisely the details specified in - * `disp'. However, there's an oddity when the display is local: - * displays like "localhost:0" usually have their details stored - * in a Unix-domain-socket record (even if there isn't actually a - * real Unix-domain socket available, as with OpenSSH's proxy X11 - * server). - * - * This is apparently a fudge to get round the meaninglessness of - * "localhost" in a shared-home-directory context -- xauth entries - * for Unix-domain sockets already disambiguate this by storing - * the *local* hostname in the conveniently-blank hostname field, - * but IP "localhost" records couldn't do this. So, typically, an - * IP "localhost" entry in the auth database isn't present and if - * it were it would be ignored. - * - * However, we don't entirely trust that (say) Windows X servers - * won't rely on a straight "localhost" entry, bad idea though - * that is; so if we can't find a Unix-domain-socket entry we'll - * fall back to an IP-based entry if we can find one. - */ - int localhost = !disp->unixdomain && sk_address_is_local(disp->addr); - - authfp = fopen(authfilename, "rb"); - if (!authfp) - return; - - /* Records in .Xauthority contain four strings of up to 64K each */ - buf = snewn(65537 * 4, char); - - while (!ideal_match) { - int c, i, j, match = FALSE; - -#define GET do { c = fgetc(authfp); if (c == EOF) goto done; c = (unsigned char)c; } while (0) - /* Expect a big-endian 2-byte number giving address family */ - GET; family = c; - GET; family = (family << 8) | c; - /* Then expect four strings, each composed of a big-endian 2-byte - * length field followed by that many bytes of data */ - ptr = buf; - for (i = 0; i < 4; i++) { - GET; len[i] = c; - GET; len[i] = (len[i] << 8) | c; - str[i] = ptr; - for (j = 0; j < len[i]; j++) { - GET; *ptr++ = c; - } - *ptr++ = '\0'; - } -#undef GET - - /* - * Now we have a full X authority record in memory. See - * whether it matches the display we're trying to - * authenticate to. - * - * The details we've just read should be interpreted as - * follows: - * - * - 'family' is the network address family used to - * connect to the display. 0 means IPv4; 6 means IPv6; - * 256 means Unix-domain sockets. - * - * - str[0] is the network address itself. For IPv4 and - * IPv6, this is a string of binary data of the - * appropriate length (respectively 4 and 16 bytes) - * representing the address in big-endian format, e.g. - * 7F 00 00 01 means IPv4 localhost. For Unix-domain - * sockets, this is the host name of the machine on - * which the Unix-domain display resides (so that an - * .Xauthority file on a shared file system can contain - * authority entries for Unix-domain displays on - * several machines without them clashing). - * - * - str[1] is the display number. I've no idea why - * .Xauthority stores this as a string when it has a - * perfectly good integer format, but there we go. - * - * - str[2] is the authorisation method, encoded as its - * canonical string name (i.e. "MIT-MAGIC-COOKIE-1", - * "XDM-AUTHORIZATION-1" or something we don't - * recognise). - * - * - str[3] is the actual authorisation data, stored in - * binary form. - */ - - if (disp->displaynum < 0 || disp->displaynum != atoi(str[1])) - continue; /* not the one */ - - for (protocol = 1; protocol < lenof(x11_authnames); protocol++) - if (!strcmp(str[2], x11_authnames[protocol])) - break; - if (protocol == lenof(x11_authnames)) - continue; /* don't recognise this protocol, look for another */ - - switch (family) { - case 0: /* IPv4 */ - if (!disp->unixdomain && - sk_addrtype(disp->addr) == ADDRTYPE_IPV4) { - char buf[4]; - sk_addrcopy(disp->addr, buf); - if (len[0] == 4 && !memcmp(str[0], buf, 4)) { - match = TRUE; - /* If this is a "localhost" entry, note it down - * but carry on looking for a Unix-domain entry. */ - ideal_match = !localhost; - } - } - break; - case 6: /* IPv6 */ - if (!disp->unixdomain && - sk_addrtype(disp->addr) == ADDRTYPE_IPV6) { - char buf[16]; - sk_addrcopy(disp->addr, buf); - if (len[0] == 16 && !memcmp(str[0], buf, 16)) { - match = TRUE; - ideal_match = !localhost; - } - } - break; - case 256: /* Unix-domain / localhost */ - if ((disp->unixdomain || localhost) - && ourhostname && !strcmp(ourhostname, str[0])) - /* A matching Unix-domain socket is always the best - * match. */ - match = ideal_match = TRUE; - break; - } - - if (match) { - /* Current best guess -- may be overridden if !ideal_match */ - disp->localauthproto = protocol; - sfree(disp->localauthdata); /* free previous guess, if any */ - disp->localauthdata = snewn(len[3], unsigned char); - memcpy(disp->localauthdata, str[3], len[3]); - disp->localauthdatalen = len[3]; - } - } - - done: - fclose(authfp); - memset(buf, 0, 65537 * 4); - sfree(buf); - sfree(ourhostname); -} - -static void x11_log(Plug p, int type, SockAddr addr, int port, - const char *error_msg, int error_code) -{ - /* We have no interface to the logging module here, so we drop these. */ -} - -static int x11_closing(Plug plug, const char *error_msg, int error_code, - int calling_back) -{ - struct X11Private *pr = (struct X11Private *) plug; - - /* - * We have no way to communicate down the forwarded connection, - * so if an error occurred on the socket, we just ignore it - * and treat it like a proper close. - */ - sshfwd_close(pr->c); - x11_close(pr->s); - return 1; -} - -static int x11_receive(Plug plug, int urgent, char *data, int len) -{ - struct X11Private *pr = (struct X11Private *) plug; - - if (sshfwd_write(pr->c, data, len) > 0) { - pr->throttled = 1; - sk_set_frozen(pr->s, 1); - } - - return 1; -} - -static void x11_sent(Plug plug, int bufsize) -{ - struct X11Private *pr = (struct X11Private *) plug; - - sshfwd_unthrottle(pr->c, bufsize); -} - -/* - * When setting up X forwarding, we should send the screen number - * from the specified local display. This function extracts it from - * the display string. - */ -int x11_get_screen_number(char *display) -{ - int n; - - n = strcspn(display, ":"); - if (!display[n]) - return 0; - n = strcspn(display, "."); - if (!display[n]) - return 0; - return atoi(display + n + 1); -} - -/* - * Called to set up the raw connection. - * - * Returns an error message, or NULL on success. - * also, fills the SocketsStructure - */ -extern const char *x11_init(Socket *s, struct X11Display *disp, void *c, - const char *peeraddr, int peerport, - const Config *cfg) -{ - static const struct plug_function_table fn_table = { - x11_log, - x11_closing, - x11_receive, - x11_sent, - NULL - }; - - const char *err; - struct X11Private *pr; - - /* - * Open socket. - */ - pr = snew(struct X11Private); - pr->fn = &fn_table; - pr->auth_protocol = NULL; - pr->disp = disp; - pr->verified = 0; - pr->data_read = 0; - pr->throttled = pr->throttle_override = 0; - pr->c = c; - - pr->s = *s = new_connection(sk_addr_dup(disp->addr), - disp->realhost, disp->port, - 0, 1, 0, 0, (Plug) pr, cfg); - if ((err = sk_socket_error(*s)) != NULL) { - sfree(pr); - return err; - } - - /* - * See if we can make sense of the peer address we were given. - */ - { - int i[4]; - if (peeraddr && - 4 == sscanf(peeraddr, "%d.%d.%d.%d", i+0, i+1, i+2, i+3)) { - pr->peer_ip = (i[0] << 24) | (i[1] << 16) | (i[2] << 8) | i[3]; - pr->peer_port = peerport; - } else { - pr->peer_ip = 0; - pr->peer_port = -1; - } - } - - sk_set_private_ptr(*s, pr); - return NULL; -} - -void x11_close(Socket s) -{ - struct X11Private *pr; - if (!s) - return; - pr = (struct X11Private *) sk_get_private_ptr(s); - if (pr->auth_protocol) { - sfree(pr->auth_protocol); - sfree(pr->auth_data); - } - - sfree(pr); - - sk_close(s); -} - -void x11_unthrottle(Socket s) -{ - struct X11Private *pr; - if (!s) - return; - pr = (struct X11Private *) sk_get_private_ptr(s); - - pr->throttled = 0; - sk_set_frozen(s, pr->throttled || pr->throttle_override); -} - -void x11_override_throttle(Socket s, int enable) -{ - struct X11Private *pr; - if (!s) - return; - pr = (struct X11Private *) sk_get_private_ptr(s); - - pr->throttle_override = enable; - sk_set_frozen(s, pr->throttled || pr->throttle_override); -} - -/* - * Called to send data down the raw connection. - */ -int x11_send(Socket s, char *data, int len) -{ - struct X11Private *pr; - if (!s) - return 0; - pr = (struct X11Private *) sk_get_private_ptr(s); - - /* - * Read the first packet. - */ - while (len > 0 && pr->data_read < 12) - pr->firstpkt[pr->data_read++] = (unsigned char) (len--, *data++); - if (pr->data_read < 12) - return 0; - - /* - * If we have not allocated the auth_protocol and auth_data - * strings, do so now. - */ - if (!pr->auth_protocol) { - pr->auth_plen = GET_16BIT(pr->firstpkt[0], pr->firstpkt + 6); - pr->auth_dlen = GET_16BIT(pr->firstpkt[0], pr->firstpkt + 8); - pr->auth_psize = (pr->auth_plen + 3) & ~3; - pr->auth_dsize = (pr->auth_dlen + 3) & ~3; - /* Leave room for a terminating zero, to make our lives easier. */ - pr->auth_protocol = snewn(pr->auth_psize + 1, char); - pr->auth_data = snewn(pr->auth_dsize, unsigned char); - } - - /* - * Read the auth_protocol and auth_data strings. - */ - while (len > 0 && pr->data_read < 12 + pr->auth_psize) - pr->auth_protocol[pr->data_read++ - 12] = (len--, *data++); - while (len > 0 && pr->data_read < 12 + pr->auth_psize + pr->auth_dsize) - pr->auth_data[pr->data_read++ - 12 - - pr->auth_psize] = (unsigned char) (len--, *data++); - if (pr->data_read < 12 + pr->auth_psize + pr->auth_dsize) - return 0; - - /* - * If we haven't verified the authorisation, do so now. - */ - if (!pr->verified) { - char *err; - - pr->auth_protocol[pr->auth_plen] = '\0'; /* ASCIZ */ - err = x11_verify(pr->peer_ip, pr->peer_port, - pr->disp, pr->auth_protocol, - pr->auth_data, pr->auth_dlen); - - /* - * If authorisation failed, construct and send an error - * packet, then terminate the connection. - */ - if (err) { - char *message; - int msglen, msgsize; - unsigned char *reply; - - message = dupprintf("%s X11 proxy: %s", appname, err); - msglen = strlen(message); - reply = snewn(8 + msglen+1 + 4, unsigned char); /* include zero */ - msgsize = (msglen + 3) & ~3; - reply[0] = 0; /* failure */ - reply[1] = msglen; /* length of reason string */ - memcpy(reply + 2, pr->firstpkt + 2, 4); /* major/minor proto vsn */ - PUT_16BIT(pr->firstpkt[0], reply + 6, msgsize >> 2);/* data len */ - memset(reply + 8, 0, msgsize); - memcpy(reply + 8, message, msglen); - sshfwd_write(pr->c, (char *)reply, 8 + msgsize); - sshfwd_close(pr->c); - x11_close(s); - sfree(reply); - sfree(message); - return 0; - } - - /* - * Now we know we're going to accept the connection. Strip - * the fake auth data, and optionally put real auth data in - * instead. - */ - { - char realauthdata[64]; - int realauthlen = 0; - int authstrlen = strlen(x11_authnames[pr->disp->localauthproto]); - int buflen = 0; /* initialise to placate optimiser */ - static const char zeroes[4] = { 0,0,0,0 }; - void *buf; - - if (pr->disp->localauthproto == X11_MIT) { - assert(pr->disp->localauthdatalen <= lenof(realauthdata)); - realauthlen = pr->disp->localauthdatalen; - memcpy(realauthdata, pr->disp->localauthdata, realauthlen); - } else if (pr->disp->localauthproto == X11_XDM && - pr->disp->localauthdatalen == 16 && - ((buf = sk_getxdmdata(s, &buflen))!=0)) { - time_t t; - realauthlen = (buflen+12+7) & ~7; - assert(realauthlen <= lenof(realauthdata)); - memset(realauthdata, 0, realauthlen); - memcpy(realauthdata, pr->disp->localauthdata, 8); - memcpy(realauthdata+8, buf, buflen); - t = time(NULL); - PUT_32BIT_MSB_FIRST(realauthdata+8+buflen, t); - des_encrypt_xdmauth(pr->disp->localauthdata+9, - (unsigned char *)realauthdata, - realauthlen); - sfree(buf); - } - /* implement other auth methods here if required */ - - PUT_16BIT(pr->firstpkt[0], pr->firstpkt + 6, authstrlen); - PUT_16BIT(pr->firstpkt[0], pr->firstpkt + 8, realauthlen); - - sk_write(s, (char *)pr->firstpkt, 12); - - if (authstrlen) { - sk_write(s, x11_authnames[pr->disp->localauthproto], - authstrlen); - sk_write(s, zeroes, 3 & (-authstrlen)); - } - if (realauthlen) { - sk_write(s, realauthdata, realauthlen); - sk_write(s, zeroes, 3 & (-realauthlen)); - } - } - pr->verified = 1; - } - - /* - * After initialisation, just copy data simply. - */ - - return sk_write(s, data, len); -} -- cgit v1.2.3