2 * PLink - a command-line (stdin/stdout) variant of PuTTY.
10 #define PUTTY_DO_GLOBALS /* actually _define_ globals */
13 void fatalbox (char *p, ...) {
15 fprintf(stderr, "FATAL ERROR: ", p);
17 vfprintf(stderr, p, ap);
32 while (reap < inbuf_head) {
33 if (!WriteFile(outhandle, inbuf+reap, inbuf_head-reap, &ret, NULL))
34 return; /* give up in panic */
46 static int get_password(const char *prompt, char *str, int maxlen)
51 #if 0 /* this allows specifying a password some other way */
53 static int tried_once = 0;
58 strncpy(str, password, maxlen);
66 hin = GetStdHandle(STD_INPUT_HANDLE);
67 hout = GetStdHandle(STD_OUTPUT_HANDLE);
68 if (hin == INVALID_HANDLE_VALUE || hout == INVALID_HANDLE_VALUE) {
69 fprintf(stderr, "Cannot get standard input/output handles");
73 GetConsoleMode(hin, &savemode);
74 SetConsoleMode(hin, (savemode & (~ENABLE_ECHO_INPUT)) |
75 ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT);
77 WriteFile(hout, prompt, strlen(prompt), &i, NULL);
78 ReadFile(hin, str, maxlen-1, &i, NULL);
80 SetConsoleMode(hin, savemode);
82 if ((int)i > maxlen) i = maxlen-1; else i = i - 2;
85 WriteFile(hout, "\r\n", 2, &i, NULL);
90 int WINAPI stdin_read_thread(void *param) {
91 struct input_data *idata = (struct input_data *)param;
94 inhandle = GetStdHandle(STD_INPUT_HANDLE);
96 while (ReadFile(inhandle, idata->buffer, sizeof(idata->buffer),
98 SetEvent(idata->event);
102 SetEvent(idata->event);
107 int main(int argc, char **argv) {
110 WSAEVENT netevent, stdinevent;
114 struct input_data idata;
117 ssh_get_password = get_password;
121 * Process the command line.
123 default_protocol = DEFAULT_PROTOCOL;
124 default_port = DEFAULT_PORT;
129 if (!strcmp(p, "-ssh")) {
130 default_protocol = cfg.protocol = PROT_SSH;
131 default_port = cfg.port = 22;
132 } else if (!strcmp(p, "-v")) {
133 flags |= FLAG_VERBOSE;
134 } else if (!strcmp(p, "-log")) {
135 logfile = "putty.log";
141 * If the hostname starts with "telnet:", set the
142 * protocol to Telnet and process the string as a
145 if (!strncmp(q, "telnet:", 7)) {
149 if (q[0] == '/' && q[1] == '/')
151 cfg.protocol = PROT_TELNET;
153 while (*p && *p != ':' && *p != '/') p++;
161 strncpy (cfg.host, q, sizeof(cfg.host)-1);
162 cfg.host[sizeof(cfg.host)-1] = '\0';
165 * Three cases. Either (a) there's a nonzero
166 * length string followed by an @, in which
167 * case that's user and the remainder is host.
168 * Or (b) there's only one string, not counting
169 * a potential initial @, and it exists in the
170 * saved-sessions database. Or (c) only one
171 * string and it _doesn't_ exist in the
174 char *r = strrchr(p, '@');
175 if (r == p) p++, r = NULL; /* discount initial @ */
181 if (cfg.host[0] == '\0') {
182 /* No settings for this host; use defaults */
183 strncpy(cfg.host, p, sizeof(cfg.host)-1);
184 cfg.host[sizeof(cfg.host)-1] = '\0';
189 strncpy(cfg.username, p, sizeof(cfg.username)-1);
190 cfg.username[sizeof(cfg.username)-1] = '\0';
191 strncpy(cfg.host, r, sizeof(cfg.host)-1);
192 cfg.host[sizeof(cfg.host)-1] = '\0';
197 int len = sizeof(cfg.remote_cmd) - 1;
198 char *cp = cfg.remote_cmd;
201 strncpy(cp, p, len); cp[len] = '\0';
202 len2 = strlen(cp); len -= len2; cp += len2;
206 strncpy(cp, *++argv, len); cp[len] = '\0';
207 len2 = strlen(cp); len -= len2; cp += len2;
209 cfg.nopty = TRUE; /* command => no terminal */
210 cfg.ldisc_term = TRUE; /* use stdin like a line buffer */
211 break; /* done with cmdline */
216 if (!*cfg.remote_cmd)
217 flags |= FLAG_INTERACTIVE;
220 * Select protocol. This is farmed out into a table in a
221 * separate file to enable an ssh-free variant.
226 for (i = 0; backends[i].backend != NULL; i++)
227 if (backends[i].protocol == cfg.protocol) {
228 back = backends[i].backend;
232 fprintf(stderr, "Internal fault: Unsupported protocol found\n");
238 * Initialise WinSock.
240 winsock_ver = MAKEWORD(2, 0);
241 if (WSAStartup(winsock_ver, &wsadata)) {
242 MessageBox(NULL, "Unable to initialise WinSock", "WinSock Error",
243 MB_OK | MB_ICONEXCLAMATION);
246 if (LOBYTE(wsadata.wVersion) != 2 || HIBYTE(wsadata.wVersion) != 0) {
247 MessageBox(NULL, "WinSock version is incompatible with 2.0",
248 "WinSock Error", MB_OK | MB_ICONEXCLAMATION);
254 * Start up the connection.
260 error = back->init (NULL, cfg.host, cfg.port, &realhost);
262 fprintf(stderr, "Unable to open connection:\n%s", error);
267 netevent = CreateEvent(NULL, FALSE, FALSE, NULL);
268 stdinevent = CreateEvent(NULL, FALSE, FALSE, NULL);
271 SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT);
272 outhandle = GetStdHandle(STD_OUTPUT_HANDLE);
275 * Now we must send the back end oodles of stuff.
277 socket = back->socket();
279 * Turn off ECHO and LINE input modes. We don't care if this
280 * call fails, because we know we aren't necessarily running in
283 WSAEventSelect(socket, netevent, FD_READ | FD_CLOSE);
284 handles[0] = netevent;
285 handles[1] = stdinevent;
289 n = WaitForMultipleObjects(2, handles, FALSE, INFINITE);
291 WSANETWORKEVENTS things;
292 if (!WSAEnumNetworkEvents(socket, netevent, &things)) {
293 if (things.lNetworkEvents & FD_READ)
294 back->msg(0, FD_READ);
295 if (things.lNetworkEvents & FD_CLOSE) {
296 back->msg(0, FD_CLOSE);
301 if (!sending && back->sendok()) {
303 * Create a separate thread to read from stdin.
304 * This is a total pain, but I can't find another
307 * - an overlapped ReadFile or ReadFileEx just
308 * doesn't happen; we get failure from
309 * ReadFileEx, and ReadFile blocks despite being
310 * given an OVERLAPPED structure. Perhaps we
311 * can't do overlapped reads on consoles. WHY
314 * - WaitForMultipleObjects(netevent, console)
315 * doesn't work, because it signals the console
316 * when _anything_ happens, including mouse
317 * motions and other things that don't cause
318 * data to be readable - so we're back to
321 idata.event = stdinevent;
322 if (!CreateThread(NULL, 0, stdin_read_thread,
323 &idata, 0, &threadid)) {
324 fprintf(stderr, "Unable to create second thread\n");
331 back->send(idata.buffer, idata.len);
333 back->special(TS_EOF);