diff options
Diffstat (limited to 'tools/plink/winplink.c')
| -rw-r--r-- | tools/plink/winplink.c | 719 |
1 files changed, 719 insertions, 0 deletions
diff --git a/tools/plink/winplink.c b/tools/plink/winplink.c new file mode 100644 index 000000000..525b1a212 --- /dev/null +++ b/tools/plink/winplink.c @@ -0,0 +1,719 @@ +/*
+ * 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 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 */
+}
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