#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
+#include <assert.h>
#include <stdarg.h>
#define PUTTY_DO_GLOBALS /* actually _define_ globals */
va_end(ap);
fputc('\n', stderr);
WSACleanup();
- exit(1);
+ cleanup_exit(1);
}
-void connection_fatal(char *p, ...)
+void modalfatalbox(char *p, ...)
{
va_list ap;
fprintf(stderr, "FATAL ERROR: ");
va_end(ap);
fputc('\n', stderr);
WSACleanup();
- exit(1);
-}
-
-static char *password = NULL;
-
-void logevent(char *string)
-{
+ cleanup_exit(1);
}
-
-void verify_ssh_host_key(char *host, int port, char *keytype,
- char *keystr, char *fingerprint)
+void connection_fatal(void *frontend, char *p, ...)
{
- int ret;
- HANDLE hin;
- DWORD savemode, i;
-
- 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 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[] =
- "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 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;
-
- if (ret == 2) { /* key was different */
- fprintf(stderr, wrongmsg, fingerprint);
- fflush(stderr);
- }
- if (ret == 1) { /* key was absent */
- fprintf(stderr, absentmsg, 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);
- } else {
- fprintf(stderr, abandoned);
- exit(0);
- }
+ va_list ap;
+ fprintf(stderr, "FATAL ERROR: ");
+ va_start(ap, p);
+ vfprintf(stderr, p, ap);
+ va_end(ap);
+ fputc('\n', stderr);
+ WSACleanup();
+ cleanup_exit(1);
}
-
-/*
- * Ask whether the selected cipher is acceptable (since it was
- * below the configured 'warn' threshold).
- * cs: 0 = both ways, 1 = client->server, 2 = server->client
- */
-void askcipher(char *ciphername, int cs)
+void cmdline_error(char *p, ...)
{
- HANDLE hin;
- DWORD savemode, i;
-
- static const char msg[] =
- "The first %scipher supported by the server is\n"
- "%s, which is below the configured warning threshold.\n"
- "Continue with connection? (y/n) ";
- static const char abandoned[] = "Connection abandoned.\n";
-
- char line[32];
-
- fprintf(stderr, msg,
- (cs == 0) ? "" :
- (cs == 1) ? "client-to-server " :
- "server-to-client ",
- ciphername);
- 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;
- } else {
- fprintf(stderr, abandoned);
- exit(0);
- }
+ 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;
WSAEVENT netevent;
-int term_ldisc(int mode)
+static Backend *back;
+static void *backhandle;
+
+int term_ldisc(Terminal *term, int mode)
{
return FALSE;
}
-void ldisc_update(int echo, int edit)
+void ldisc_update(void *frontend, int echo, int edit)
{
/* Update stdin read mode to reflect changes in line discipline. */
DWORD mode;
SetConsoleMode(inhandle, mode);
}
-static int get_line(const char *prompt, char *str, int maxlen, int is_pw)
-{
- HANDLE hin, hout;
- DWORD savemode, newmode, i;
-
- if (is_pw && password) {
- static int tried_once = 0;
-
- if (tried_once) {
- return 0;
- } else {
- strncpy(str, password, maxlen);
- str[maxlen - 1] = '\0';
- tried_once = 1;
- return 1;
- }
- }
-
- hin = GetStdHandle(STD_INPUT_HANDLE);
- hout = GetStdHandle(STD_OUTPUT_HANDLE);
- if (hin == INVALID_HANDLE_VALUE || hout == INVALID_HANDLE_VALUE) {
- fprintf(stderr, "Cannot get standard input/output handles");
- return 0;
- }
-
- GetConsoleMode(hin, &savemode);
- newmode = savemode | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT;
- if (is_pw)
- newmode &= ~ENABLE_ECHO_INPUT;
- else
- newmode |= ENABLE_ECHO_INPUT;
- SetConsoleMode(hin, newmode);
-
- WriteFile(hout, prompt, strlen(prompt), &i, NULL);
- ReadFile(hin, str, maxlen - 1, &i, NULL);
-
- SetConsoleMode(hin, savemode);
-
- if ((int) i > maxlen)
- i = maxlen - 1;
- else
- i = i - 2;
- str[i] = '\0';
-
- if (is_pw)
- WriteFile(hout, "\r\n", 2, &i, NULL);
-
- return 1;
-}
-
struct input_data {
DWORD len;
char buffer[4096];
}
}
-int from_backend(int is_stderr, char *data, int len)
+int from_backend(void *frontend_handle, int is_stderr, char *data, int len)
{
- HANDLE h = (is_stderr ? errhandle : outhandle);
int osize, esize;
+ assert(len > 0);
+
if (is_stderr) {
bufchain_add(&stderr_data, data, len);
try_output(1);
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 show verbose messages\n");
- printf(" -ssh force use of ssh protocol\n");
+ printf(" -load sessname Load settings from saved session\n");
+ printf(" -ssh -telnet -rlogin -raw\n");
+ printf(" force use of a particular protocol (default SSH)\n");
printf(" -P port connect to specified port\n");
- printf(" -pw passw login with specified password\n");
+ printf(" -l user connect with specified username\n");
printf(" -m file read remote command(s) from file\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(" -L listen-port:host:port Forward local port to "
+ "remote address\n");
+ printf(" -R listen-port:host:port 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(" -C enable compression\n");
+ printf(" -i key private key file for authentication\n");
exit(1);
}
{
int events;
if (startup) {
- events = FD_READ | FD_WRITE | FD_OOB | FD_CLOSE | FD_ACCEPT;
+ events = (FD_CONNECT | FD_READ | FD_WRITE |
+ FD_OOB | FD_CLOSE | FD_ACCEPT);
} else {
events = 0;
}
SOCKET *sklist;
int skcount, sksize;
int connopen;
+ int exitcode;
+ int errors;
- ssh_get_line = get_line;
+ ssh_get_line = console_get_line;
sklist = NULL;
skcount = sksize = 0;
do_defaults(NULL, &cfg);
default_protocol = cfg.protocol;
default_port = cfg.port;
+ errors = 0;
{
/*
* Override the default protocol if PLINK_PROTOCOL is set.
while (--argc) {
char *p = *++argv;
if (*p == '-') {
- if (!strcmp(p, "-ssh")) {
- default_protocol = cfg.protocol = PROT_SSH;
- default_port = cfg.port = 22;
- } else if (!strcmp(p, "-telnet")) {
- default_protocol = cfg.protocol = PROT_TELNET;
- default_port = cfg.port = 23;
- } else if (!strcmp(p, "-raw")) {
- default_protocol = cfg.protocol = PROT_RAW;
- } else if (!strcmp(p, "-v")) {
- flags |= FLAG_VERBOSE;
- } else if (!strcmp(p, "-log")) {
- logfile = "putty.log";
- } else if (!strcmp(p, "-pw") && argc > 1) {
- --argc, password = *++argv;
- } else if (!strcmp(p, "-l") && argc > 1) {
- char *username;
- --argc, username = *++argv;
- strncpy(cfg.username, username, sizeof(cfg.username));
- cfg.username[sizeof(cfg.username) - 1] = '\0';
- } else if (!strcmp(p, "-m") && argc > 1) {
- char *filename, *command;
- int cmdlen, cmdsize;
- FILE *fp;
- int c, d;
-
- --argc, filename = *++argv;
-
- cmdlen = cmdsize = 0;
- command = NULL;
- fp = fopen(filename, "r");
- if (!fp) {
- fprintf(stderr, "plink: unable to open command "
- "file \"%s\"\n", filename);
- return 1;
- }
- do {
- c = fgetc(fp);
- d = c;
- if (c == EOF)
- d = 0;
- if (cmdlen >= cmdsize) {
- cmdsize = cmdlen + 512;
- command = srealloc(command, cmdsize);
- }
- command[cmdlen++] = d;
- } while (c != EOF);
- cfg.remote_cmd_ptr = command;
- cfg.remote_cmd_ptr2 = NULL;
- cfg.nopty = TRUE; /* command => no terminal */
- } else if (!strcmp(p, "-P") && argc > 1) {
- --argc, portnumber = atoi(*++argv);
+ 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 {
+ fprintf(stderr, "plink: unknown option \"%s\"\n", p);
+ errors = 1;
}
} else if (*p) {
if (!*cfg.host) {
}
}
} else {
- int len = sizeof(cfg.remote_cmd) - 1;
- char *cp = cfg.remote_cmd;
- int len2;
-
- strncpy(cp, p, len);
- cp[len] = '\0';
- len2 = strlen(cp);
- len -= len2;
- cp += len2;
- while (--argc) {
- if (len > 0)
- len--, *cp++ = ' ';
- strncpy(cp, *++argv, len);
- cp[len] = '\0';
- len2 = strlen(cp);
- len -= len2;
- cp += len2;
+ char *command;
+ int cmdlen, cmdsize;
+ cmdlen = cmdsize = 0;
+ command = NULL;
+
+ while (argc) {
+ while (*p) {
+ if (cmdlen >= cmdsize) {
+ cmdsize = cmdlen + 512;
+ command = srealloc(command, cmdsize);
+ }
+ command[cmdlen++]=*p++;
+ }
+ if (cmdlen >= cmdsize) {
+ cmdsize = cmdlen + 512;
+ command = srealloc(command, cmdsize);
+ }
+ 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.host) {
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.host[0] != '\0') {
+ char *atsign = strchr(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);
+
+ /*
+ * 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)
flags |= FLAG_INTERACTIVE;
{
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(cfg.host, cfg.port, &realhost);
+ error = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port,
+ &realhost, nodelay);
if (error) {
fprintf(stderr, "Unable to open connection:\n%s", error);
return 1;
}
+ logctx = log_init(NULL);
+ back->provide_logctx(backhandle, logctx);
sfree(realhost);
}
connopen = 1;
if (!CreateThread(NULL, 0, stdout_write_thread,
&odata, 0, &out_threadid)) {
fprintf(stderr, "Unable to create output thread\n");
- exit(1);
+ cleanup_exit(1);
}
edata.event = stderrevent;
edata.eventback = CreateEvent(NULL, FALSE, FALSE, NULL);
if (!CreateThread(NULL, 0, stdout_write_thread,
&edata, 0, &err_threadid)) {
fprintf(stderr, "Unable to create error output thread\n");
- exit(1);
+ cleanup_exit(1);
}
while (1) {
int n;
- if (!sending && back->sendok()) {
+ if (!sending && back->sendok(backhandle)) {
/*
* Create a separate thread to read from stdin. This is
* a total pain, but I can't find another way to do it:
if (!CreateThread(NULL, 0, stdin_read_thread,
&idata, 0, &in_threadid)) {
fprintf(stderr, "Unable to create input thread\n");
- exit(1);
+ cleanup_exit(1);
}
sending = TRUE;
}
socket = sklist[i];
wp = (WPARAM) socket;
if (!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);
- if (things.lNetworkEvents & FD_READ)
- connopen &= select_result(wp, (LPARAM) FD_READ);
- if (things.lNetworkEvents & FD_CLOSE)
- connopen &= select_result(wp, (LPARAM) FD_CLOSE);
- if (things.lNetworkEvents & FD_OOB)
- connopen &= select_result(wp, (LPARAM) FD_OOB);
- if (things.lNetworkEvents & FD_WRITE)
- connopen &= select_result(wp, (LPARAM) FD_WRITE);
- if (things.lNetworkEvents & FD_ACCEPT)
- connopen &= select_result(wp, (LPARAM) FD_ACCEPT);
+ 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 == 1) {
reading = 0;
noise_ultralight(idata.len);
- if (idata.len > 0) {
- back->send(idata.buffer, idata.len);
- } else {
- back->special(TS_EOF);
+ if (connopen && back->socket(backhandle) != NULL) {
+ if (idata.len > 0) {
+ back->send(backhandle, idata.buffer, idata.len);
+ } else {
+ back->special(backhandle, TS_EOF);
+ }
}
} else if (n == 2) {
odata.busy = 0;
if (!odata.writeret) {
fprintf(stderr, "Unable to write to standard output\n");
- exit(0);
+ cleanup_exit(0);
}
bufchain_consume(&stdout_data, odata.lenwritten);
if (bufchain_size(&stdout_data) > 0)
try_output(0);
- back->unthrottle(bufchain_size(&stdout_data) +
- bufchain_size(&stderr_data));
+ if (connopen && back->socket(backhandle) != NULL) {
+ back->unthrottle(backhandle, bufchain_size(&stdout_data) +
+ bufchain_size(&stderr_data));
+ }
} else if (n == 3) {
edata.busy = 0;
if (!edata.writeret) {
fprintf(stderr, "Unable to write to standard output\n");
- exit(0);
+ cleanup_exit(0);
}
bufchain_consume(&stderr_data, edata.lenwritten);
if (bufchain_size(&stderr_data) > 0)
try_output(1);
- back->unthrottle(bufchain_size(&stdout_data) +
- bufchain_size(&stderr_data));
+ if (connopen && back->socket(backhandle) != NULL) {
+ back->unthrottle(backhandle, bufchain_size(&stdout_data) +
+ bufchain_size(&stderr_data));
+ }
}
- if (!reading && back->sendbuffer() < MAX_STDIN_BACKLOG) {
+ if (!reading && back->sendbuffer(backhandle) < MAX_STDIN_BACKLOG) {
SetEvent(idata.eventback);
reading = 1;
}
- if (!connopen || back->socket() == NULL)
+ if ((!connopen || back->socket(backhandle) == NULL) &&
+ bufchain_size(&stdout_data) == 0 &&
+ bufchain_size(&stderr_data) == 0)
break; /* we closed the connection */
}
WSACleanup();
- return 0;
+ exitcode = back->exitcode(backhandle);
+ if (exitcode < 0) {
+ fprintf(stderr, "Remote process exit code unavailable\n");
+ exitcode = 1; /* this is an error condition */
+ }
+ return exitcode;
}
projects / u / mdw / putty / blobdiff