12dc4ec0 |
1 | /* |
2 | * PLink - a command-line (stdin/stdout) variant of PuTTY. |
3 | */ |
4 | |
4d331a77 |
5 | #ifndef AUTO_WINSOCK |
12dc4ec0 |
6 | #include <winsock2.h> |
4d331a77 |
7 | #endif |
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8 | #include <windows.h> |
9 | #include <stdio.h> |
10 | #include <stdarg.h> |
11 | |
12 | #define PUTTY_DO_GLOBALS /* actually _define_ globals */ |
13 | #include "putty.h" |
14 | |
15 | void fatalbox (char *p, ...) { |
16 | va_list ap; |
17 | fprintf(stderr, "FATAL ERROR: ", p); |
18 | va_start(ap, p); |
19 | vfprintf(stderr, p, ap); |
20 | va_end(ap); |
21 | fputc('\n', stderr); |
22 | WSACleanup(); |
23 | exit(1); |
24 | } |
8d5de777 |
25 | void connection_fatal (char *p, ...) { |
26 | va_list ap; |
27 | fprintf(stderr, "FATAL ERROR: ", p); |
28 | va_start(ap, p); |
29 | vfprintf(stderr, p, ap); |
30 | va_end(ap); |
31 | fputc('\n', stderr); |
32 | WSACleanup(); |
33 | exit(1); |
34 | } |
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35 | |
d8426c54 |
36 | static char *password = NULL; |
37 | |
989b10e9 |
38 | /* |
39 | * Stubs for linking with other modules. |
40 | */ |
41 | void write_clip (void *data, int len) { } |
42 | void term_deselect(void) { } |
43 | |
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44 | HANDLE outhandle; |
6f34e365 |
45 | DWORD orig_console_mode; |
46 | |
47 | void begin_session(void) { |
48 | if (!cfg.ldisc_term) |
49 | SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT); |
50 | else |
51 | SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), orig_console_mode); |
52 | } |
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53 | |
54 | void term_out(void) |
55 | { |
56 | int reap; |
57 | DWORD ret; |
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58 | reap = 0; |
59 | while (reap < inbuf_head) { |
60 | if (!WriteFile(outhandle, inbuf+reap, inbuf_head-reap, &ret, NULL)) |
61 | return; /* give up in panic */ |
62 | reap += ret; |
63 | } |
64 | inbuf_head = 0; |
65 | } |
66 | |
67 | struct input_data { |
68 | DWORD len; |
69 | char buffer[4096]; |
70 | HANDLE event; |
71 | }; |
72 | |
67779be7 |
73 | static int get_password(const char *prompt, char *str, int maxlen) |
74 | { |
75 | HANDLE hin, hout; |
76 | DWORD savemode, i; |
77 | |
67779be7 |
78 | if (password) { |
79 | static int tried_once = 0; |
80 | |
81 | if (tried_once) { |
82 | return 0; |
83 | } else { |
84 | strncpy(str, password, maxlen); |
85 | str[maxlen-1] = '\0'; |
86 | tried_once = 1; |
87 | return 1; |
88 | } |
89 | } |
67779be7 |
90 | |
91 | hin = GetStdHandle(STD_INPUT_HANDLE); |
92 | hout = GetStdHandle(STD_OUTPUT_HANDLE); |
93 | if (hin == INVALID_HANDLE_VALUE || hout == INVALID_HANDLE_VALUE) { |
94 | fprintf(stderr, "Cannot get standard input/output handles"); |
95 | return 0; |
96 | } |
97 | |
98 | GetConsoleMode(hin, &savemode); |
99 | SetConsoleMode(hin, (savemode & (~ENABLE_ECHO_INPUT)) | |
100 | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT); |
101 | |
102 | WriteFile(hout, prompt, strlen(prompt), &i, NULL); |
103 | ReadFile(hin, str, maxlen-1, &i, NULL); |
104 | |
105 | SetConsoleMode(hin, savemode); |
106 | |
107 | if ((int)i > maxlen) i = maxlen-1; else i = i - 2; |
108 | str[i] = '\0'; |
109 | |
110 | WriteFile(hout, "\r\n", 2, &i, NULL); |
111 | |
112 | return 1; |
113 | } |
114 | |
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115 | int WINAPI stdin_read_thread(void *param) { |
116 | struct input_data *idata = (struct input_data *)param; |
117 | HANDLE inhandle; |
118 | |
119 | inhandle = GetStdHandle(STD_INPUT_HANDLE); |
120 | |
121 | while (ReadFile(inhandle, idata->buffer, sizeof(idata->buffer), |
122 | &idata->len, NULL)) { |
123 | SetEvent(idata->event); |
124 | } |
125 | |
126 | idata->len = 0; |
127 | SetEvent(idata->event); |
128 | |
129 | return 0; |
130 | } |
131 | |
d8426c54 |
132 | /* |
133 | * Short description of parameters. |
134 | */ |
135 | static void usage(void) |
136 | { |
137 | printf("PuTTY Link: command-line connection utility\n"); |
138 | printf("%s\n", ver); |
139 | printf("Usage: plink [options] [user@]host [command]\n"); |
140 | printf("Options:\n"); |
141 | printf(" -v show verbose messages\n"); |
142 | printf(" -ssh force use of ssh protocol\n"); |
143 | printf(" -P port connect to specified port\n"); |
144 | printf(" -pw passw login with specified password\n"); |
145 | exit(1); |
146 | } |
147 | |
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148 | int main(int argc, char **argv) { |
149 | WSADATA wsadata; |
150 | WORD winsock_ver; |
151 | WSAEVENT netevent, stdinevent; |
152 | HANDLE handles[2]; |
153 | SOCKET socket; |
154 | DWORD threadid; |
155 | struct input_data idata; |
156 | int sending; |
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157 | int portnumber = -1; |
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158 | |
67779be7 |
159 | ssh_get_password = get_password; |
160 | |
161 | flags = FLAG_STDERR; |
12dc4ec0 |
162 | /* |
163 | * Process the command line. |
164 | */ |
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165 | do_defaults(NULL); |
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166 | default_protocol = cfg.protocol; |
167 | default_port = cfg.port; |
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168 | while (--argc) { |
169 | char *p = *++argv; |
170 | if (*p == '-') { |
171 | if (!strcmp(p, "-ssh")) { |
172 | default_protocol = cfg.protocol = PROT_SSH; |
173 | default_port = cfg.port = 22; |
67779be7 |
174 | } else if (!strcmp(p, "-v")) { |
175 | flags |= FLAG_VERBOSE; |
12dc4ec0 |
176 | } else if (!strcmp(p, "-log")) { |
177 | logfile = "putty.log"; |
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178 | } else if (!strcmp(p, "-pw") && argc > 1) { |
179 | --argc, password = *++argv; |
e7a7383f |
180 | } else if (!strcmp(p, "-l") && argc > 1) { |
181 | char *username; |
182 | --argc, username = *++argv; |
183 | strncpy(cfg.username, username, sizeof(cfg.username)); |
184 | cfg.username[sizeof(cfg.username)-1] = '\0'; |
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185 | } else if (!strcmp(p, "-P") && argc > 1) { |
186 | --argc, portnumber = atoi(*++argv); |
187 | } |
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188 | } else if (*p) { |
189 | if (!*cfg.host) { |
190 | char *q = p; |
191 | /* |
192 | * If the hostname starts with "telnet:", set the |
193 | * protocol to Telnet and process the string as a |
194 | * Telnet URL. |
195 | */ |
196 | if (!strncmp(q, "telnet:", 7)) { |
197 | char c; |
198 | |
199 | q += 7; |
200 | if (q[0] == '/' && q[1] == '/') |
201 | q += 2; |
202 | cfg.protocol = PROT_TELNET; |
203 | p = q; |
204 | while (*p && *p != ':' && *p != '/') p++; |
205 | c = *p; |
206 | if (*p) |
207 | *p++ = '\0'; |
208 | if (c == ':') |
209 | cfg.port = atoi(p); |
210 | else |
211 | cfg.port = -1; |
212 | strncpy (cfg.host, q, sizeof(cfg.host)-1); |
213 | cfg.host[sizeof(cfg.host)-1] = '\0'; |
214 | } else { |
215 | /* |
216 | * Three cases. Either (a) there's a nonzero |
217 | * length string followed by an @, in which |
218 | * case that's user and the remainder is host. |
219 | * Or (b) there's only one string, not counting |
220 | * a potential initial @, and it exists in the |
221 | * saved-sessions database. Or (c) only one |
222 | * string and it _doesn't_ exist in the |
223 | * database. |
224 | */ |
225 | char *r = strrchr(p, '@'); |
226 | if (r == p) p++, r = NULL; /* discount initial @ */ |
227 | if (r == NULL) { |
228 | /* |
229 | * One string. |
230 | */ |
231 | do_defaults (p); |
232 | if (cfg.host[0] == '\0') { |
233 | /* No settings for this host; use defaults */ |
234 | strncpy(cfg.host, p, sizeof(cfg.host)-1); |
235 | cfg.host[sizeof(cfg.host)-1] = '\0'; |
236 | cfg.port = 22; |
237 | } |
238 | } else { |
239 | *r++ = '\0'; |
240 | strncpy(cfg.username, p, sizeof(cfg.username)-1); |
241 | cfg.username[sizeof(cfg.username)-1] = '\0'; |
242 | strncpy(cfg.host, r, sizeof(cfg.host)-1); |
243 | cfg.host[sizeof(cfg.host)-1] = '\0'; |
244 | cfg.port = 22; |
245 | } |
246 | } |
247 | } else { |
248 | int len = sizeof(cfg.remote_cmd) - 1; |
249 | char *cp = cfg.remote_cmd; |
250 | int len2; |
251 | |
252 | strncpy(cp, p, len); cp[len] = '\0'; |
253 | len2 = strlen(cp); len -= len2; cp += len2; |
254 | while (--argc) { |
255 | if (len > 0) |
256 | len--, *cp++ = ' '; |
257 | strncpy(cp, *++argv, len); cp[len] = '\0'; |
258 | len2 = strlen(cp); len -= len2; cp += len2; |
259 | } |
260 | cfg.nopty = TRUE; /* command => no terminal */ |
261 | cfg.ldisc_term = TRUE; /* use stdin like a line buffer */ |
262 | break; /* done with cmdline */ |
263 | } |
264 | } |
265 | } |
266 | |
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267 | if (!*cfg.host) { |
268 | usage(); |
269 | } |
270 | if (portnumber != -1) |
271 | cfg.port = portnumber; |
272 | |
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273 | if (!*cfg.remote_cmd) |
274 | flags |= FLAG_INTERACTIVE; |
275 | |
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276 | /* |
277 | * Select protocol. This is farmed out into a table in a |
278 | * separate file to enable an ssh-free variant. |
279 | */ |
280 | { |
281 | int i; |
282 | back = NULL; |
283 | for (i = 0; backends[i].backend != NULL; i++) |
284 | if (backends[i].protocol == cfg.protocol) { |
285 | back = backends[i].backend; |
286 | break; |
287 | } |
288 | if (back == NULL) { |
289 | fprintf(stderr, "Internal fault: Unsupported protocol found\n"); |
290 | return 1; |
291 | } |
292 | } |
293 | |
294 | /* |
295 | * Initialise WinSock. |
296 | */ |
297 | winsock_ver = MAKEWORD(2, 0); |
298 | if (WSAStartup(winsock_ver, &wsadata)) { |
299 | MessageBox(NULL, "Unable to initialise WinSock", "WinSock Error", |
300 | MB_OK | MB_ICONEXCLAMATION); |
301 | return 1; |
302 | } |
303 | if (LOBYTE(wsadata.wVersion) != 2 || HIBYTE(wsadata.wVersion) != 0) { |
304 | MessageBox(NULL, "WinSock version is incompatible with 2.0", |
305 | "WinSock Error", MB_OK | MB_ICONEXCLAMATION); |
306 | WSACleanup(); |
307 | return 1; |
308 | } |
309 | |
310 | /* |
311 | * Start up the connection. |
312 | */ |
313 | { |
314 | char *error; |
315 | char *realhost; |
316 | |
317 | error = back->init (NULL, cfg.host, cfg.port, &realhost); |
318 | if (error) { |
319 | fprintf(stderr, "Unable to open connection:\n%s", error); |
320 | return 1; |
321 | } |
322 | } |
323 | |
324 | netevent = CreateEvent(NULL, FALSE, FALSE, NULL); |
325 | stdinevent = CreateEvent(NULL, FALSE, FALSE, NULL); |
326 | |
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327 | GetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), &orig_console_mode); |
328 | SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT); |
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329 | outhandle = GetStdHandle(STD_OUTPUT_HANDLE); |
330 | |
331 | /* |
332 | * Now we must send the back end oodles of stuff. |
333 | */ |
334 | socket = back->socket(); |
335 | /* |
336 | * Turn off ECHO and LINE input modes. We don't care if this |
337 | * call fails, because we know we aren't necessarily running in |
338 | * a console. |
339 | */ |
340 | WSAEventSelect(socket, netevent, FD_READ | FD_CLOSE); |
341 | handles[0] = netevent; |
342 | handles[1] = stdinevent; |
343 | sending = FALSE; |
344 | while (1) { |
345 | int n; |
346 | n = WaitForMultipleObjects(2, handles, FALSE, INFINITE); |
347 | if (n == 0) { |
348 | WSANETWORKEVENTS things; |
349 | if (!WSAEnumNetworkEvents(socket, netevent, &things)) { |
350 | if (things.lNetworkEvents & FD_READ) |
351 | back->msg(0, FD_READ); |
352 | if (things.lNetworkEvents & FD_CLOSE) { |
353 | back->msg(0, FD_CLOSE); |
354 | break; |
355 | } |
356 | } |
357 | term_out(); |
358 | if (!sending && back->sendok()) { |
359 | /* |
360 | * Create a separate thread to read from stdin. |
361 | * This is a total pain, but I can't find another |
362 | * way to do it: |
363 | * |
364 | * - an overlapped ReadFile or ReadFileEx just |
365 | * doesn't happen; we get failure from |
366 | * ReadFileEx, and ReadFile blocks despite being |
367 | * given an OVERLAPPED structure. Perhaps we |
368 | * can't do overlapped reads on consoles. WHY |
369 | * THE HELL NOT? |
370 | * |
371 | * - WaitForMultipleObjects(netevent, console) |
372 | * doesn't work, because it signals the console |
373 | * when _anything_ happens, including mouse |
374 | * motions and other things that don't cause |
375 | * data to be readable - so we're back to |
376 | * ReadFile blocking. |
377 | */ |
378 | idata.event = stdinevent; |
379 | if (!CreateThread(NULL, 0, stdin_read_thread, |
380 | &idata, 0, &threadid)) { |
381 | fprintf(stderr, "Unable to create second thread\n"); |
382 | exit(1); |
383 | } |
384 | sending = TRUE; |
385 | } |
386 | } else if (n == 1) { |
387 | if (idata.len > 0) { |
388 | back->send(idata.buffer, idata.len); |
389 | } else { |
390 | back->special(TS_EOF); |
391 | } |
392 | } |
393 | } |
394 | WSACleanup(); |
395 | return 0; |
396 | } |