dfe3332b |
1 | #include <stdio.h> |
2 | #include <assert.h> |
3 | #include <stdlib.h> |
4 | #include "putty.h" |
5 | |
6 | /* |
7 | * Some command-line parameters need to be saved up until after |
8 | * we've loaded the saved session which will form the basis of our |
9 | * eventual running configuration. For this we use the macro |
10 | * SAVEABLE, which notices if the `need_save' parameter is set and |
11 | * saves the parameter and value on a list. |
12 | * |
13 | * We also assign priorities to saved parameters, just to slightly |
14 | * ameliorate silly ordering problems. For example, if you specify |
15 | * a saved session to load, it will be loaded _before_ all your |
16 | * local modifications such as -L are evaluated; and if you specify |
17 | * a protocol and a port, the protocol is set up first so that the |
18 | * port can override its choice of port number. |
c725e24c |
19 | * |
20 | * (In fact -load is not saved at all, since in at least Plink the |
21 | * processing of further command-line options depends on whether or |
22 | * not the loaded session contained a hostname. So it must be |
23 | * executed immediately.) |
dfe3332b |
24 | */ |
25 | |
c725e24c |
26 | #define NPRIORITIES 2 |
dfe3332b |
27 | |
28 | struct cmdline_saved_param { |
29 | char *p, *value; |
30 | }; |
31 | struct cmdline_saved_param_set { |
32 | struct cmdline_saved_param *params; |
33 | int nsaved, savesize; |
34 | }; |
35 | |
36 | /* |
37 | * C guarantees this structure will be initialised to all zero at |
38 | * program start, which is exactly what we want. |
39 | */ |
40 | static struct cmdline_saved_param_set saves[NPRIORITIES]; |
41 | |
42 | static void cmdline_save_param(char *p, char *value, int pri) |
43 | { |
44 | if (saves[pri].nsaved >= saves[pri].savesize) { |
45 | saves[pri].savesize = saves[pri].nsaved + 32; |
3d88e64d |
46 | saves[pri].params = sresize(saves[pri].params, saves[pri].savesize, |
47 | struct cmdline_saved_param); |
dfe3332b |
48 | } |
49 | saves[pri].params[saves[pri].nsaved].p = p; |
50 | saves[pri].params[saves[pri].nsaved].value = value; |
51 | saves[pri].nsaved++; |
52 | } |
53 | |
679539d7 |
54 | void cmdline_cleanup(void) |
55 | { |
56 | int pri; |
57 | |
58 | for (pri = 0; pri < NPRIORITIES; pri++) |
59 | sfree(saves[pri].params); |
60 | } |
61 | |
dfe3332b |
62 | #define SAVEABLE(pri) do { \ |
63 | if (need_save) { cmdline_save_param(p, value, pri); return ret; } \ |
64 | } while (0) |
65 | |
edd0cb8a |
66 | static char *cmdline_password = NULL; |
67 | |
68 | /* |
69 | * Similar interface to get_userpass_input(), except that here a -1 |
70 | * return means that we aren't capable of processing the prompt and |
71 | * someone else should do it. |
72 | */ |
73 | int cmdline_get_passwd_input(prompts_t *p, unsigned char *in, int inlen) { |
dfe3332b |
74 | |
dfe3332b |
75 | static int tried_once = 0; |
76 | |
edd0cb8a |
77 | /* |
78 | * We only handle prompts which don't echo (which we assume to be |
79 | * passwords), and (currently) we only cope with a password prompt |
80 | * that comes in a prompt-set on its own. |
81 | */ |
82 | if (!cmdline_password || in || p->n_prompts != 1 || p->prompts[0]->echo) { |
83 | return -1; |
84 | } |
dfe3332b |
85 | |
edd0cb8a |
86 | /* |
87 | * If we've tried once, return utter failure (no more passwords left |
88 | * to try). |
89 | */ |
90 | if (tried_once) |
dfe3332b |
91 | return 0; |
edd0cb8a |
92 | |
93 | strncpy(p->prompts[0]->result, cmdline_password, |
94 | p->prompts[0]->result_len); |
95 | p->prompts[0]->result[p->prompts[0]->result_len-1] = '\0'; |
96 | memset(cmdline_password, 0, strlen(cmdline_password)); |
97 | tried_once = 1; |
98 | return 1; |
99 | |
dfe3332b |
100 | } |
101 | |
102 | /* |
103 | * Here we have a flags word which describes the capabilities of |
104 | * the particular tool on whose behalf we're running. We will |
105 | * refuse certain command-line options if a particular tool |
106 | * inherently can't do anything sensible. For example, the file |
107 | * transfer tools (psftp, pscp) can't do a great deal with protocol |
108 | * selections (ever tried running scp over telnet?) or with port |
109 | * forwarding (even if it wasn't a hideously bad idea, they don't |
110 | * have the select() infrastructure to make them work). |
111 | */ |
112 | int cmdline_tooltype = 0; |
113 | |
114 | static int cmdline_check_unavailable(int flag, char *p) |
115 | { |
116 | if (cmdline_tooltype & flag) { |
117 | cmdline_error("option \"%s\" not available in this tool", p); |
118 | return 1; |
119 | } |
120 | return 0; |
121 | } |
122 | |
123 | #define UNAVAILABLE_IN(flag) do { \ |
124 | if (cmdline_check_unavailable(flag, p)) return ret; \ |
125 | } while (0) |
126 | |
127 | /* |
128 | * Process a standard command-line parameter. `p' is the parameter |
129 | * in question; `value' is the subsequent element of argv, which |
130 | * may or may not be required as an operand to the parameter. |
b552f500 |
131 | * If `need_save' is 1, arguments which need to be saved as |
132 | * described at this top of this file are, for later execution; |
133 | * if 0, they are processed normally. (-1 is a special value used |
134 | * by pterm to count arguments for a preliminary pass through the |
135 | * argument list; it causes immediate return with an appropriate |
136 | * value with no action taken.) |
dfe3332b |
137 | * Return value is 2 if both arguments were used; 1 if only p was |
138 | * used; 0 if the parameter wasn't one we recognised; -2 if it |
139 | * should have been 2 but value was NULL. |
140 | */ |
141 | |
142 | #define RETURN(x) do { \ |
143 | if ((x) == 2 && !value) return -2; \ |
144 | ret = x; \ |
46a3419b |
145 | if (need_save < 0) return x; \ |
dfe3332b |
146 | } while (0) |
147 | |
5555d393 |
148 | int cmdline_process_param(char *p, char *value, int need_save, Config *cfg) |
dfe3332b |
149 | { |
150 | int ret = 0; |
151 | |
152 | if (!strcmp(p, "-load")) { |
153 | RETURN(2); |
c725e24c |
154 | /* This parameter must be processed immediately rather than being |
155 | * saved. */ |
5555d393 |
156 | do_defaults(value, cfg); |
18e62ad8 |
157 | loaded_session = TRUE; |
dfe3332b |
158 | return 2; |
159 | } |
160 | if (!strcmp(p, "-ssh")) { |
161 | RETURN(1); |
46a3419b |
162 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
163 | SAVEABLE(0); |
5555d393 |
164 | default_protocol = cfg->protocol = PROT_SSH; |
165 | default_port = cfg->port = 22; |
dfe3332b |
166 | return 1; |
167 | } |
168 | if (!strcmp(p, "-telnet")) { |
169 | RETURN(1); |
46a3419b |
170 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
171 | SAVEABLE(0); |
5555d393 |
172 | default_protocol = cfg->protocol = PROT_TELNET; |
173 | default_port = cfg->port = 23; |
dfe3332b |
174 | return 1; |
175 | } |
176 | if (!strcmp(p, "-rlogin")) { |
177 | RETURN(1); |
46a3419b |
178 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
179 | SAVEABLE(0); |
5555d393 |
180 | default_protocol = cfg->protocol = PROT_RLOGIN; |
181 | default_port = cfg->port = 513; |
dfe3332b |
182 | return 1; |
183 | } |
184 | if (!strcmp(p, "-raw")) { |
185 | RETURN(1); |
46a3419b |
186 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
187 | SAVEABLE(0); |
5555d393 |
188 | default_protocol = cfg->protocol = PROT_RAW; |
dfe3332b |
189 | } |
190 | if (!strcmp(p, "-v")) { |
191 | RETURN(1); |
192 | flags |= FLAG_VERBOSE; |
193 | } |
194 | if (!strcmp(p, "-l")) { |
195 | RETURN(2); |
46a3419b |
196 | UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); |
c725e24c |
197 | SAVEABLE(0); |
5555d393 |
198 | strncpy(cfg->username, value, sizeof(cfg->username)); |
199 | cfg->username[sizeof(cfg->username) - 1] = '\0'; |
dfe3332b |
200 | } |
820ebe3b |
201 | if ((!strcmp(p, "-L") || !strcmp(p, "-R") || !strcmp(p, "-D"))) { |
6ee9b735 |
202 | char *fwd, *ptr, *q, *qq; |
820ebe3b |
203 | int dynamic, i=0; |
dfe3332b |
204 | RETURN(2); |
46a3419b |
205 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
206 | SAVEABLE(0); |
820ebe3b |
207 | dynamic = !strcmp(p, "-D"); |
dfe3332b |
208 | fwd = value; |
5555d393 |
209 | ptr = cfg->portfwd; |
116f2044 |
210 | /* if existing forwards, find end of list */ |
211 | while (*ptr) { |
212 | while (*ptr) |
213 | ptr++; |
214 | ptr++; |
dfe3332b |
215 | } |
116f2044 |
216 | i = ptr - cfg->portfwd; |
820ebe3b |
217 | ptr[0] = p[1]; /* insert a 'L', 'R' or 'D' at the start */ |
116f2044 |
218 | ptr++; |
219 | if (1 + strlen(fwd) + 2 > sizeof(cfg->portfwd) - i) { |
dfe3332b |
220 | cmdline_error("out of space for port forwardings"); |
221 | return ret; |
222 | } |
116f2044 |
223 | strncpy(ptr, fwd, sizeof(cfg->portfwd) - i - 2); |
820ebe3b |
224 | if (!dynamic) { |
225 | /* |
226 | * We expect _at least_ two colons in this string. The |
227 | * possible formats are `sourceport:desthost:destport', |
228 | * or `sourceip:sourceport:desthost:destport' if you're |
229 | * specifying a particular loopback address. We need to |
230 | * replace the one between source and dest with a \t; |
231 | * this means we must find the second-to-last colon in |
232 | * the string. |
233 | */ |
234 | q = qq = strchr(ptr, ':'); |
235 | while (qq) { |
236 | char *qqq = strchr(qq+1, ':'); |
237 | if (qqq) |
238 | q = qq; |
239 | qq = qqq; |
240 | } |
241 | if (q) *q = '\t'; /* replace second-last colon with \t */ |
6ee9b735 |
242 | } |
5555d393 |
243 | cfg->portfwd[sizeof(cfg->portfwd) - 1] = '\0'; |
244 | cfg->portfwd[sizeof(cfg->portfwd) - 2] = '\0'; |
116f2044 |
245 | ptr[strlen(ptr)+1] = '\000'; /* append 2nd '\000' */ |
dfe3332b |
246 | } |
247 | if (!strcmp(p, "-m")) { |
248 | char *filename, *command; |
249 | int cmdlen, cmdsize; |
250 | FILE *fp; |
251 | int c, d; |
252 | |
253 | RETURN(2); |
46a3419b |
254 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
255 | SAVEABLE(0); |
dfe3332b |
256 | |
257 | filename = value; |
258 | |
259 | cmdlen = cmdsize = 0; |
260 | command = NULL; |
261 | fp = fopen(filename, "r"); |
262 | if (!fp) { |
263 | cmdline_error("unable to open command " |
264 | "file \"%s\"", filename); |
265 | return ret; |
266 | } |
267 | do { |
268 | c = fgetc(fp); |
269 | d = c; |
270 | if (c == EOF) |
271 | d = 0; |
272 | if (cmdlen >= cmdsize) { |
273 | cmdsize = cmdlen + 512; |
3d88e64d |
274 | command = sresize(command, cmdsize, char); |
dfe3332b |
275 | } |
276 | command[cmdlen++] = d; |
277 | } while (c != EOF); |
5555d393 |
278 | cfg->remote_cmd_ptr = command; |
279 | cfg->remote_cmd_ptr2 = NULL; |
280 | cfg->nopty = TRUE; /* command => no terminal */ |
dfe3332b |
281 | } |
282 | if (!strcmp(p, "-P")) { |
283 | RETURN(2); |
46a3419b |
284 | UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); |
c725e24c |
285 | SAVEABLE(1); /* lower priority than -ssh,-telnet */ |
5555d393 |
286 | cfg->port = atoi(value); |
dfe3332b |
287 | } |
288 | if (!strcmp(p, "-pw")) { |
289 | RETURN(2); |
46a3419b |
290 | UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); |
dfe3332b |
291 | cmdline_password = value; |
dfe3332b |
292 | } |
293 | |
294 | if (!strcmp(p, "-A")) { |
295 | RETURN(1); |
46a3419b |
296 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
297 | SAVEABLE(0); |
5555d393 |
298 | cfg->agentfwd = 1; |
dfe3332b |
299 | } |
300 | if (!strcmp(p, "-a")) { |
301 | RETURN(1); |
46a3419b |
302 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
303 | SAVEABLE(0); |
5555d393 |
304 | cfg->agentfwd = 0; |
dfe3332b |
305 | } |
306 | |
307 | if (!strcmp(p, "-X")) { |
308 | RETURN(1); |
46a3419b |
309 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
310 | SAVEABLE(0); |
5555d393 |
311 | cfg->x11_forward = 1; |
dfe3332b |
312 | } |
313 | if (!strcmp(p, "-x")) { |
314 | RETURN(1); |
46a3419b |
315 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
316 | SAVEABLE(0); |
5555d393 |
317 | cfg->x11_forward = 0; |
dfe3332b |
318 | } |
319 | |
320 | if (!strcmp(p, "-t")) { |
321 | RETURN(1); |
46a3419b |
322 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
323 | SAVEABLE(0); |
5555d393 |
324 | cfg->nopty = 0; |
dfe3332b |
325 | } |
326 | if (!strcmp(p, "-T")) { |
327 | RETURN(1); |
46a3419b |
328 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
c725e24c |
329 | SAVEABLE(0); |
5555d393 |
330 | cfg->nopty = 1; |
dfe3332b |
331 | } |
332 | |
0ed48730 |
333 | if (!strcmp(p, "-N")) { |
334 | RETURN(1); |
335 | UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK); |
336 | SAVEABLE(0); |
337 | cfg->ssh_no_shell = 1; |
338 | } |
339 | |
dfe3332b |
340 | if (!strcmp(p, "-C")) { |
341 | RETURN(1); |
46a3419b |
342 | UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); |
c725e24c |
343 | SAVEABLE(0); |
5555d393 |
344 | cfg->compression = 1; |
dfe3332b |
345 | } |
346 | |
347 | if (!strcmp(p, "-1")) { |
348 | RETURN(1); |
46a3419b |
349 | UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); |
c725e24c |
350 | SAVEABLE(0); |
5555d393 |
351 | cfg->sshprot = 0; /* ssh protocol 1 only */ |
dfe3332b |
352 | } |
353 | if (!strcmp(p, "-2")) { |
354 | RETURN(1); |
46a3419b |
355 | UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); |
c725e24c |
356 | SAVEABLE(0); |
5555d393 |
357 | cfg->sshprot = 3; /* ssh protocol 2 only */ |
dfe3332b |
358 | } |
359 | |
360 | if (!strcmp(p, "-i")) { |
361 | RETURN(2); |
46a3419b |
362 | UNAVAILABLE_IN(TOOLTYPE_NONNETWORK); |
c725e24c |
363 | SAVEABLE(0); |
9a30e26b |
364 | cfg->keyfile = filename_from_str(value); |
dfe3332b |
365 | } |
366 | |
05581745 |
367 | if (!strcmp(p, "-4") || !strcmp(p, "-ipv4")) { |
368 | RETURN(1); |
369 | SAVEABLE(1); |
370 | cfg->addressfamily = ADDRTYPE_IPV4; |
371 | } |
372 | if (!strcmp(p, "-6") || !strcmp(p, "-ipv6")) { |
373 | RETURN(1); |
374 | SAVEABLE(1); |
375 | cfg->addressfamily = ADDRTYPE_IPV6; |
376 | } |
377 | |
dfe3332b |
378 | return ret; /* unrecognised */ |
379 | } |
380 | |
5555d393 |
381 | void cmdline_run_saved(Config *cfg) |
dfe3332b |
382 | { |
383 | int pri, i; |
384 | for (pri = 0; pri < NPRIORITIES; pri++) |
385 | for (i = 0; i < saves[pri].nsaved; i++) |
386 | cmdline_process_param(saves[pri].params[i].p, |
5555d393 |
387 | saves[pri].params[i].value, 0, cfg); |
dfe3332b |
388 | } |