12dc4ec0 |
1 | /* |
2 | * PLink - a command-line (stdin/stdout) variant of PuTTY. |
3 | */ |
4 | |
5 | #include <winsock2.h> |
6 | #include <windows.h> |
7 | #include <stdio.h> |
8 | #include <stdarg.h> |
9 | |
10 | #define PUTTY_DO_GLOBALS /* actually _define_ globals */ |
11 | #include "putty.h" |
12 | |
13 | void fatalbox (char *p, ...) { |
14 | va_list ap; |
15 | fprintf(stderr, "FATAL ERROR: ", p); |
16 | va_start(ap, p); |
17 | vfprintf(stderr, p, ap); |
18 | va_end(ap); |
19 | fputc('\n', stderr); |
20 | WSACleanup(); |
21 | exit(1); |
22 | } |
23 | |
24 | HANDLE outhandle; |
25 | |
26 | void term_out(void) |
27 | { |
28 | int reap; |
29 | DWORD ret; |
30 | |
31 | reap = 0; |
32 | while (reap < inbuf_head) { |
33 | if (!WriteFile(outhandle, inbuf+reap, inbuf_head-reap, &ret, NULL)) |
34 | return; /* give up in panic */ |
35 | reap += ret; |
36 | } |
37 | inbuf_head = 0; |
38 | } |
39 | |
40 | struct input_data { |
41 | DWORD len; |
42 | char buffer[4096]; |
43 | HANDLE event; |
44 | }; |
45 | |
67779be7 |
46 | static int get_password(const char *prompt, char *str, int maxlen) |
47 | { |
48 | HANDLE hin, hout; |
49 | DWORD savemode, i; |
50 | |
51 | #if 0 /* this allows specifying a password some other way */ |
52 | if (password) { |
53 | static int tried_once = 0; |
54 | |
55 | if (tried_once) { |
56 | return 0; |
57 | } else { |
58 | strncpy(str, password, maxlen); |
59 | str[maxlen-1] = '\0'; |
60 | tried_once = 1; |
61 | return 1; |
62 | } |
63 | } |
64 | #endif |
65 | |
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"); |
70 | return 0; |
71 | } |
72 | |
73 | GetConsoleMode(hin, &savemode); |
74 | SetConsoleMode(hin, (savemode & (~ENABLE_ECHO_INPUT)) | |
75 | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT); |
76 | |
77 | WriteFile(hout, prompt, strlen(prompt), &i, NULL); |
78 | ReadFile(hin, str, maxlen-1, &i, NULL); |
79 | |
80 | SetConsoleMode(hin, savemode); |
81 | |
82 | if ((int)i > maxlen) i = maxlen-1; else i = i - 2; |
83 | str[i] = '\0'; |
84 | |
85 | WriteFile(hout, "\r\n", 2, &i, NULL); |
86 | |
87 | return 1; |
88 | } |
89 | |
12dc4ec0 |
90 | int WINAPI stdin_read_thread(void *param) { |
91 | struct input_data *idata = (struct input_data *)param; |
92 | HANDLE inhandle; |
93 | |
94 | inhandle = GetStdHandle(STD_INPUT_HANDLE); |
95 | |
96 | while (ReadFile(inhandle, idata->buffer, sizeof(idata->buffer), |
97 | &idata->len, NULL)) { |
98 | SetEvent(idata->event); |
99 | } |
100 | |
101 | idata->len = 0; |
102 | SetEvent(idata->event); |
103 | |
104 | return 0; |
105 | } |
106 | |
107 | int main(int argc, char **argv) { |
108 | WSADATA wsadata; |
109 | WORD winsock_ver; |
110 | WSAEVENT netevent, stdinevent; |
111 | HANDLE handles[2]; |
112 | SOCKET socket; |
113 | DWORD threadid; |
114 | struct input_data idata; |
115 | int sending; |
116 | |
67779be7 |
117 | ssh_get_password = get_password; |
118 | |
119 | flags = FLAG_STDERR; |
12dc4ec0 |
120 | /* |
121 | * Process the command line. |
122 | */ |
123 | default_protocol = DEFAULT_PROTOCOL; |
124 | default_port = DEFAULT_PORT; |
125 | do_defaults(NULL); |
126 | while (--argc) { |
127 | char *p = *++argv; |
128 | if (*p == '-') { |
129 | if (!strcmp(p, "-ssh")) { |
130 | default_protocol = cfg.protocol = PROT_SSH; |
131 | default_port = cfg.port = 22; |
67779be7 |
132 | } else if (!strcmp(p, "-v")) { |
133 | flags |= FLAG_VERBOSE; |
12dc4ec0 |
134 | } else if (!strcmp(p, "-log")) { |
135 | logfile = "putty.log"; |
136 | } |
137 | } else if (*p) { |
138 | if (!*cfg.host) { |
139 | char *q = p; |
140 | /* |
141 | * If the hostname starts with "telnet:", set the |
142 | * protocol to Telnet and process the string as a |
143 | * Telnet URL. |
144 | */ |
145 | if (!strncmp(q, "telnet:", 7)) { |
146 | char c; |
147 | |
148 | q += 7; |
149 | if (q[0] == '/' && q[1] == '/') |
150 | q += 2; |
151 | cfg.protocol = PROT_TELNET; |
152 | p = q; |
153 | while (*p && *p != ':' && *p != '/') p++; |
154 | c = *p; |
155 | if (*p) |
156 | *p++ = '\0'; |
157 | if (c == ':') |
158 | cfg.port = atoi(p); |
159 | else |
160 | cfg.port = -1; |
161 | strncpy (cfg.host, q, sizeof(cfg.host)-1); |
162 | cfg.host[sizeof(cfg.host)-1] = '\0'; |
163 | } else { |
164 | /* |
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 |
172 | * database. |
173 | */ |
174 | char *r = strrchr(p, '@'); |
175 | if (r == p) p++, r = NULL; /* discount initial @ */ |
176 | if (r == NULL) { |
177 | /* |
178 | * One string. |
179 | */ |
180 | do_defaults (p); |
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'; |
185 | cfg.port = 22; |
186 | } |
187 | } else { |
188 | *r++ = '\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'; |
193 | cfg.port = 22; |
194 | } |
195 | } |
196 | } else { |
197 | int len = sizeof(cfg.remote_cmd) - 1; |
198 | char *cp = cfg.remote_cmd; |
199 | int len2; |
200 | |
201 | strncpy(cp, p, len); cp[len] = '\0'; |
202 | len2 = strlen(cp); len -= len2; cp += len2; |
203 | while (--argc) { |
204 | if (len > 0) |
205 | len--, *cp++ = ' '; |
206 | strncpy(cp, *++argv, len); cp[len] = '\0'; |
207 | len2 = strlen(cp); len -= len2; cp += len2; |
208 | } |
209 | cfg.nopty = TRUE; /* command => no terminal */ |
210 | cfg.ldisc_term = TRUE; /* use stdin like a line buffer */ |
211 | break; /* done with cmdline */ |
212 | } |
213 | } |
214 | } |
215 | |
67779be7 |
216 | if (!*cfg.remote_cmd) |
217 | flags |= FLAG_INTERACTIVE; |
218 | |
12dc4ec0 |
219 | /* |
220 | * Select protocol. This is farmed out into a table in a |
221 | * separate file to enable an ssh-free variant. |
222 | */ |
223 | { |
224 | int i; |
225 | back = NULL; |
226 | for (i = 0; backends[i].backend != NULL; i++) |
227 | if (backends[i].protocol == cfg.protocol) { |
228 | back = backends[i].backend; |
229 | break; |
230 | } |
231 | if (back == NULL) { |
232 | fprintf(stderr, "Internal fault: Unsupported protocol found\n"); |
233 | return 1; |
234 | } |
235 | } |
236 | |
237 | /* |
238 | * Initialise WinSock. |
239 | */ |
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); |
244 | return 1; |
245 | } |
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); |
249 | WSACleanup(); |
250 | return 1; |
251 | } |
252 | |
253 | /* |
254 | * Start up the connection. |
255 | */ |
256 | { |
257 | char *error; |
258 | char *realhost; |
259 | |
260 | error = back->init (NULL, cfg.host, cfg.port, &realhost); |
261 | if (error) { |
262 | fprintf(stderr, "Unable to open connection:\n%s", error); |
263 | return 1; |
264 | } |
265 | } |
266 | |
267 | netevent = CreateEvent(NULL, FALSE, FALSE, NULL); |
268 | stdinevent = CreateEvent(NULL, FALSE, FALSE, NULL); |
269 | |
270 | if (!cfg.ldisc_term) |
271 | SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT); |
272 | outhandle = GetStdHandle(STD_OUTPUT_HANDLE); |
273 | |
274 | /* |
275 | * Now we must send the back end oodles of stuff. |
276 | */ |
277 | socket = back->socket(); |
278 | /* |
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 |
281 | * a console. |
282 | */ |
283 | WSAEventSelect(socket, netevent, FD_READ | FD_CLOSE); |
284 | handles[0] = netevent; |
285 | handles[1] = stdinevent; |
286 | sending = FALSE; |
287 | while (1) { |
288 | int n; |
289 | n = WaitForMultipleObjects(2, handles, FALSE, INFINITE); |
290 | if (n == 0) { |
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); |
297 | break; |
298 | } |
299 | } |
300 | term_out(); |
301 | if (!sending && back->sendok()) { |
302 | /* |
303 | * Create a separate thread to read from stdin. |
304 | * This is a total pain, but I can't find another |
305 | * way to do it: |
306 | * |
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 |
312 | * THE HELL NOT? |
313 | * |
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 |
319 | * ReadFile blocking. |
320 | */ |
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"); |
325 | exit(1); |
326 | } |
327 | sending = TRUE; |
328 | } |
329 | } else if (n == 1) { |
330 | if (idata.len > 0) { |
331 | back->send(idata.buffer, idata.len); |
332 | } else { |
333 | back->special(TS_EOF); |
334 | } |
335 | } |
336 | } |
337 | WSACleanup(); |
338 | return 0; |
339 | } |