aboutsummaryrefslogtreecommitdiff
path: root/tools/plink/winplink.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/plink/winplink.c')
-rw-r--r--tools/plink/winplink.c1520
1 files changed, 776 insertions, 744 deletions
diff --git a/tools/plink/winplink.c b/tools/plink/winplink.c
index bd65f7825..451eff3b8 100644
--- a/tools/plink/winplink.c
+++ b/tools/plink/winplink.c
@@ -1,744 +1,776 @@
-/*
- * PLink - a Windows command-line (stdin/stdout) variant of PuTTY.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <stdarg.h>
-
-#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 Conf *conf;
-
-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 from_backend_eof(void *frontend_handle)
-{
- handle_write_eof(stdout_handle);
- return FALSE; /* do not respond to incoming EOF with outgoing */
-}
-
-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 -serial\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");
- printf(" -sercfg configuration-string (e.g. 19200,8,n,1,X)\n");
- printf(" Specify the serial configuration (serial 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 got_host = FALSE;
- 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.
- */
- conf = conf_new();
- do_defaults(NULL, conf);
- loaded_session = FALSE;
- default_protocol = conf_get_int(conf, CONF_protocol);
- default_port = conf_get_int(conf, CONF_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 = b->protocol;
- default_port = b->default_port;
- conf_set_int(conf, CONF_protocol, default_protocol);
- conf_set_int(conf, CONF_port, default_port);
- }
- }
- }
- while (--argc) {
- char *p = *++argv;
- if (*p == '-') {
- int ret = cmdline_process_param(p, (argc > 1 ? argv[1] : NULL),
- 1, conf);
- 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 conf 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 (!conf_launchable(conf) || !(got_host || loaded_session)) {
- 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;
- conf_set_int(conf, CONF_protocol, PROT_TELNET);
- p = q;
- while (*p && *p != ':' && *p != '/')
- p++;
- c = *p;
- if (*p)
- *p++ = '\0';
- if (c == ':')
- conf_set_int(conf, CONF_port, atoi(p));
- else
- conf_set_int(conf, CONF_port, -1);
- conf_set_str(conf, CONF_host, q);
- got_host = TRUE;
- } 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 = b->protocol;
- conf_set_int(conf, CONF_protocol,
- default_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.
- */
- {
- Conf *conf2 = conf_new();
- do_defaults(host, conf2);
- if (loaded_session || !conf_launchable(conf2)) {
- /* No settings for this host; use defaults */
- /* (or session was already loaded with -load) */
- conf_set_str(conf, CONF_host, host);
- conf_set_int(conf, CONF_port, default_port);
- got_host = TRUE;
- } else {
- conf_copy_into(conf, conf2);
- loaded_session = TRUE;
- }
- conf_free(conf2);
- }
-
- if (user) {
- /* Patch in specified username. */
- conf_set_str(conf, CONF_username, user);
- }
-
- }
- } 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 */
- conf_set_str(conf, CONF_remote_cmd, command);
- conf_set_str(conf, CONF_remote_cmd2, "");
- conf_set_int(conf, CONF_nopty, TRUE); /* command => no tty */
-
- break; /* done with cmdline */
- }
- }
- }
-
- if (errors)
- return 1;
-
- if (!conf_launchable(conf) || !(got_host || loaded_session)) {
- usage();
- }
-
- /*
- * Muck about with the hostname in various ways.
- */
- {
- char *hostbuf = dupstr(conf_get_str(conf, CONF_host));
- char *host = hostbuf;
- char *p, *q;
-
- /*
- * Trim leading whitespace.
- */
- host += strspn(host, " \t");
-
- /*
- * See if host is of the form user@host, and separate out
- * the username if so.
- */
- if (host[0] != '\0') {
- char *atsign = strrchr(host, '@');
- if (atsign) {
- *atsign = '\0';
- conf_set_str(conf, CONF_username, host);
- host = atsign + 1;
- }
- }
-
- /*
- * Trim off a colon suffix if it's there.
- */
- host[strcspn(host, ":")] = '\0';
-
- /*
- * Remove any remaining whitespace.
- */
- p = hostbuf;
- q = host;
- while (*q) {
- if (*q != ' ' && *q != '\t')
- *p++ = *q;
- q++;
- }
- *p = '\0';
-
- conf_set_str(conf, CONF_host, hostbuf);
- sfree(hostbuf);
- }
-
- /*
- * Perform command-line overrides on session configuration.
- */
- cmdline_run_saved(conf);
-
- /*
- * Apply subsystem status.
- */
- if (use_subsystem)
- conf_set_int(conf, CONF_ssh_subsys, TRUE);
-
- if (!*conf_get_str(conf, CONF_remote_cmd) &&
- !*conf_get_str(conf, CONF_remote_cmd2) &&
- !*conf_get_str(conf, CONF_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(conf_get_int(conf, CONF_protocol));
- if (back == NULL) {
- fprintf(stderr,
- "Internal fault: Unsupported protocol found\n");
- return 1;
- }
-
- /*
- * Select port.
- */
- if (portnumber != -1)
- conf_set_int(conf, CONF_port, portnumber);
-
- sk_init();
- if (p_WSAEventSelect == NULL) {
- fprintf(stderr, "Plink requires WinSock 2\n");
- return 1;
- }
-
- logctx = log_init(NULL, conf);
- 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 = conf_get_int(conf, CONF_tcp_nodelay) &&
- (GetFileType(GetStdHandle(STD_INPUT_HANDLE)) == FILE_TYPE_CHAR);
-
- error = back->init(NULL, &backhandle, conf,
- conf_get_str(conf, CONF_host),
- conf_get_int(conf, CONF_port),
- &realhost, nodelay,
- conf_get_int(conf, CONF_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 */
-}
+/*
+ * PLink - a Windows command-line (stdin/stdout) variant of PuTTY.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <stdarg.h>
+
+#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 nonfatal(char *p, ...)
+{
+ va_list ap;
+ fprintf(stderr, "ERROR: ");
+ va_start(ap, p);
+ vfprintf(stderr, p, ap);
+ va_end(ap);
+ fputc('\n', stderr);
+}
+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 Conf *conf;
+
+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 from_backend_eof(void *frontend_handle)
+{
+ handle_write_eof(stdout_handle);
+ return FALSE; /* do not respond to incoming EOF with outgoing */
+}
+
+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 -serial\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");
+ printf(" -sercfg configuration-string (e.g. 19200,8,n,1,X)\n");
+ printf(" Specify the serial configuration (serial 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)));
+ }
+}
+
+const int share_can_be_downstream = TRUE;
+const int share_can_be_upstream = TRUE;
+
+int main(int argc, char **argv)
+{
+ int sending;
+ int portnumber = -1;
+ SOCKET *sklist;
+ int skcount, sksize;
+ int exitcode;
+ int errors;
+ int got_host = FALSE;
+ int use_subsystem = 0;
+ unsigned long now, next, then;
+
+ 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.
+ */
+ conf = conf_new();
+ do_defaults(NULL, conf);
+ loaded_session = FALSE;
+ default_protocol = conf_get_int(conf, CONF_protocol);
+ default_port = conf_get_int(conf, CONF_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 = b->protocol;
+ default_port = b->default_port;
+ conf_set_int(conf, CONF_protocol, default_protocol);
+ conf_set_int(conf, CONF_port, default_port);
+ }
+ }
+ }
+ while (--argc) {
+ char *p = *++argv;
+ if (*p == '-') {
+ int ret = cmdline_process_param(p, (argc > 1 ? argv[1] : NULL),
+ 1, conf);
+ 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 conf later. */
+ use_subsystem = 1;
+ } else if (!strcmp(p, "-V") || !strcmp(p, "--version")) {
+ version();
+ } else if (!strcmp(p, "--help")) {
+ usage();
+ } else if (!strcmp(p, "-pgpfp")) {
+ pgp_fingerprints();
+ exit(1);
+ } else {
+ fprintf(stderr, "plink: unknown option \"%s\"\n", p);
+ errors = 1;
+ }
+ } else if (*p) {
+ if (!conf_launchable(conf) || !(got_host || loaded_session)) {
+ 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;
+ conf_set_int(conf, CONF_protocol, PROT_TELNET);
+ p = q;
+ p += host_strcspn(p, ":/");
+ c = *p;
+ if (*p)
+ *p++ = '\0';
+ if (c == ':')
+ conf_set_int(conf, CONF_port, atoi(p));
+ else
+ conf_set_int(conf, CONF_port, -1);
+ conf_set_str(conf, CONF_host, q);
+ got_host = TRUE;
+ } 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 = b->protocol;
+ conf_set_int(conf, CONF_protocol,
+ default_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.
+ */
+ {
+ Conf *conf2 = conf_new();
+ do_defaults(host, conf2);
+ if (loaded_session || !conf_launchable(conf2)) {
+ /* No settings for this host; use defaults */
+ /* (or session was already loaded with -load) */
+ conf_set_str(conf, CONF_host, host);
+ conf_set_int(conf, CONF_port, default_port);
+ got_host = TRUE;
+ } else {
+ conf_copy_into(conf, conf2);
+ loaded_session = TRUE;
+ }
+ conf_free(conf2);
+ }
+
+ if (user) {
+ /* Patch in specified username. */
+ conf_set_str(conf, CONF_username, user);
+ }
+
+ }
+ } 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 */
+ conf_set_str(conf, CONF_remote_cmd, command);
+ conf_set_str(conf, CONF_remote_cmd2, "");
+ conf_set_int(conf, CONF_nopty, TRUE); /* command => no tty */
+
+ break; /* done with cmdline */
+ }
+ }
+ }
+
+ if (errors)
+ return 1;
+
+ if (!conf_launchable(conf) || !(got_host || loaded_session)) {
+ usage();
+ }
+
+ /*
+ * Muck about with the hostname in various ways.
+ */
+ {
+ char *hostbuf = dupstr(conf_get_str(conf, CONF_host));
+ char *host = hostbuf;
+ char *p, *q;
+
+ /*
+ * Trim leading whitespace.
+ */
+ host += strspn(host, " \t");
+
+ /*
+ * See if host is of the form user@host, and separate out
+ * the username if so.
+ */
+ if (host[0] != '\0') {
+ char *atsign = strrchr(host, '@');
+ if (atsign) {
+ *atsign = '\0';
+ conf_set_str(conf, CONF_username, host);
+ host = atsign + 1;
+ }
+ }
+
+ /*
+ * Trim a colon suffix off the hostname if it's there. In
+ * order to protect unbracketed IPv6 address literals
+ * against this treatment, we do not do this if there's
+ * _more_ than one colon.
+ */
+ {
+ char *c = host_strchr(host, ':');
+
+ if (c) {
+ char *d = host_strchr(c+1, ':');
+ if (!d)
+ *c = '\0';
+ }
+ }
+
+ /*
+ * Remove any remaining whitespace.
+ */
+ p = hostbuf;
+ q = host;
+ while (*q) {
+ if (*q != ' ' && *q != '\t')
+ *p++ = *q;
+ q++;
+ }
+ *p = '\0';
+
+ conf_set_str(conf, CONF_host, hostbuf);
+ sfree(hostbuf);
+ }
+
+ /*
+ * Perform command-line overrides on session configuration.
+ */
+ cmdline_run_saved(conf);
+
+ /*
+ * Apply subsystem status.
+ */
+ if (use_subsystem)
+ conf_set_int(conf, CONF_ssh_subsys, TRUE);
+
+ if (!*conf_get_str(conf, CONF_remote_cmd) &&
+ !*conf_get_str(conf, CONF_remote_cmd2) &&
+ !*conf_get_str(conf, CONF_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(conf_get_int(conf, CONF_protocol));
+ if (back == NULL) {
+ fprintf(stderr,
+ "Internal fault: Unsupported protocol found\n");
+ return 1;
+ }
+
+ /*
+ * Select port.
+ */
+ if (portnumber != -1)
+ conf_set_int(conf, CONF_port, portnumber);
+
+ sk_init();
+ if (p_WSAEventSelect == NULL) {
+ fprintf(stderr, "Plink requires WinSock 2\n");
+ return 1;
+ }
+
+ logctx = log_init(NULL, conf);
+ 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 = conf_get_int(conf, CONF_tcp_nodelay) &&
+ (GetFileType(GetStdHandle(STD_INPUT_HANDLE)) == FILE_TYPE_CHAR);
+
+ error = back->init(NULL, &backhandle, conf,
+ conf_get_str(conf, CONF_host),
+ conf_get_int(conf, CONF_port),
+ &realhost, nodelay,
+ conf_get_int(conf, CONF_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 (toplevel_callback_pending()) {
+ ticks = 0;
+ } else if (run_timers(now, &next)) {
+ then = now;
+ now = GETTICKCOUNT();
+ if (now - then > next - then)
+ ticks = 0;
+ else
+ ticks = next - now;
+ } 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);
+ }
+ }
+
+ run_toplevel_callbacks();
+
+ 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 */
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 21:06:44 +0000