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189935b1 | 1 | /* |
2 | * IRC - Internet Relay Chat, ircd/umkpasswd.c | |
3 | * Copyright (C) 2002 hikari | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 1, or (at your option) | |
8 | * any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | * | |
19 | * $Id: umkpasswd.c,v 1.8 2005/05/11 04:15:04 entrope Exp $ | |
20 | */ | |
21 | #include "config.h" | |
22 | #include <unistd.h> | |
23 | #include <stdio.h> | |
24 | #include <stdarg.h> | |
25 | #include <errno.h> | |
26 | #include <stdlib.h> | |
27 | #include <string.h> | |
28 | #include <time.h> | |
29 | /* #include <assert.h> -- Now using assert in ircd_log.h */ | |
30 | ||
31 | /* ircu headers */ | |
32 | #include "ircd_alloc.h" | |
33 | #include "ircd_log.h" /* for ircd's assert.h */ | |
34 | #include "ircd_string.h" | |
35 | #include "umkpasswd.h" | |
36 | #include "s_debug.h" | |
37 | #include "ircd_md5.h" | |
38 | ||
39 | /* crypto mech headers */ | |
40 | #include "ircd_crypt.h" | |
41 | #include "ircd_crypt_smd5.h" | |
42 | #include "ircd_crypt_native.h" | |
43 | #include "ircd_crypt_plain.h" | |
44 | ||
45 | /* bleah, evil globals */ | |
46 | umkpasswd_conf_t* umkpasswd_conf; | |
47 | crypt_mechs_t* crypt_mechs_root; | |
48 | int log_inassert = 0; | |
49 | time_t CurrentTime; | |
50 | ||
51 | void sendto_opmask_butone(struct Client *one, unsigned int mask, | |
52 | const char *pattern, ...) | |
53 | { | |
54 | /* only needed with memdebug, which also calls Debug() */ | |
55 | } | |
56 | ||
57 | void copyright(void) | |
58 | { | |
59 | fprintf(stderr, "umkpasswd - Copyright (c) 2002 hikari\n"); | |
60 | return; | |
61 | } | |
62 | ||
63 | void show_help(void) | |
64 | { | |
65 | #ifdef DEBUGMODE | |
66 | char *debughelp = "[-d <level>] "; | |
67 | #else | |
68 | char *debughelp = ""; | |
69 | #endif | |
70 | ||
71 | copyright(); | |
72 | /*fprintf(stderr, "umkpasswd [-l] [[[-a]||[-u]] <username>] [-y <class>] %s[-c <file>] -m <mech> [password]\n\n", debughelp);*/ | |
73 | fprintf(stderr, "umkpasswd [-l] %s-m <mech> [password]\n\n", debughelp); | |
74 | fprintf(stderr, " -l List mechanisms available.\n"); | |
75 | #if 0 | |
76 | fprintf(stderr, " -a <user> Add user to conf file.\n"); | |
77 | fprintf(stderr, " -u <user> Update user's password field.\n"); | |
78 | fprintf(stderr, " -y <class> Class to place oper in.\n"); | |
79 | #endif | |
80 | fprintf(stderr, " -m <mech> Mechanism to use [MANDATORY].\n"); | |
81 | #ifdef DEBUGMODE | |
82 | fprintf(stderr, " -d <level> Debug level to run at.\n"); | |
83 | #endif | |
84 | /* | |
85 | fprintf(stderr, " -c <file> Conf file to use, default is DPATH/CPATH.\n\n"); | |
86 | */ | |
87 | return; | |
88 | } | |
89 | ||
90 | /* our implementation of debug() */ | |
91 | void debug(int level, const char *form, ...) | |
92 | { | |
93 | va_list vl; | |
94 | int err = errno; | |
95 | ||
96 | if (level <= (umkpasswd_conf->debuglevel)) | |
97 | { | |
98 | va_start(vl, form); | |
99 | vfprintf(stderr, form, vl); | |
100 | fprintf(stderr, "\n"); | |
101 | va_end(vl); | |
102 | } | |
103 | errno = err; | |
104 | } | |
105 | ||
106 | /* quick implementation of log_write() for assert() call */ | |
107 | void log_write(enum LogSys subsys, enum LogLevel severity, | |
108 | unsigned int flags, const char *fmt, ...) | |
109 | { | |
110 | va_list vl; | |
111 | va_start(vl, fmt); | |
112 | vfprintf(stderr, fmt, vl); | |
113 | fprintf(stderr, "\n"); | |
114 | va_end(vl); | |
115 | } | |
116 | ||
117 | /* quick and dirty salt generator */ | |
118 | char *make_salt(const char *salts) | |
119 | { | |
120 | char *tmp = NULL; | |
121 | long int n = 0; | |
122 | ||
123 | /* try and get around them running this time after time in quick succession */ | |
124 | sleep(1); | |
125 | srandom((unsigned int)time(NULL)); | |
126 | ||
127 | if((tmp = calloc(3, sizeof(char))) != NULL) | |
128 | { | |
129 | /* can't optimize this much more than just doing it twice */ | |
130 | n = ((float)(strlen(salts))*random()/(RAND_MAX+1.0)); | |
131 | memcpy(tmp, (salts+n), 1); | |
132 | sleep(2); | |
133 | n = ((float)(strlen(salts))*random()/(RAND_MAX+1.0)); | |
134 | memcpy((tmp+1), (salts+n), 1); | |
135 | ||
136 | Debug((DEBUG_DEBUG, "salts = %s", salts)); | |
137 | Debug((DEBUG_DEBUG, "strlen(salts) = %d", strlen(salts))); | |
138 | } | |
139 | ||
140 | return tmp; | |
141 | } | |
142 | ||
143 | /* our implementation of ircd_crypt_register_mech() */ | |
144 | int ircd_crypt_register_mech(crypt_mech_t* mechanism) | |
145 | { | |
146 | crypt_mechs_t* crypt_mech; | |
147 | ||
148 | Debug((DEBUG_INFO, "ircd_crypt_register_mech: registering mechanism: %s", mechanism->shortname)); | |
149 | ||
150 | /* try to allocate some memory for the new mechanism */ | |
151 | if ((crypt_mech = (crypt_mechs_t*)MyMalloc(sizeof(crypt_mechs_t))) == NULL) | |
152 | { | |
153 | /* aww poot, we couldn't get any memory, scream a little then back out */ | |
154 | Debug((DEBUG_MALLOC, "ircd_crypt_register_mech: could not allocate memory for %s", mechanism->shortname)); | |
155 | return -1; | |
156 | } | |
157 | ||
158 | /* ok, we have memory, initialise it */ | |
159 | memset(crypt_mech, 0, sizeof(crypt_mechs_t)); | |
160 | ||
161 | /* assign the data */ | |
162 | crypt_mech->mech = mechanism; | |
163 | crypt_mech->next = crypt_mech->prev = NULL; | |
164 | ||
165 | /* first of all, is there anything there already? */ | |
166 | if(crypt_mechs_root->next == NULL) | |
167 | { | |
168 | /* nope, just add ourself */ | |
169 | crypt_mechs_root->next = crypt_mechs_root->prev = crypt_mech; | |
170 | } else { | |
171 | /* nice and simple, put ourself at the end */ | |
172 | crypt_mech->prev = crypt_mechs_root->prev; | |
173 | crypt_mech->next = NULL; | |
174 | crypt_mechs_root->prev = crypt_mech->prev->next = crypt_mech; | |
175 | } | |
176 | ||
177 | /* we're done */ | |
178 | Debug((DEBUG_INFO, "ircd_crypt_register_mech: registered mechanism: %s, crypt_function is at 0x%X.", crypt_mech->mech->shortname, &crypt_mech->mech->crypt_function)); | |
179 | Debug((DEBUG_INFO, "ircd_crypt_register_mech: %s: %s", crypt_mech->mech->shortname, crypt_mech->mech->description)); | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | char *basename_into(char *tmp, char *target) | |
185 | { | |
186 | unsigned int len, ii; | |
187 | ||
188 | len = strlen(tmp); | |
189 | for (ii = len; ii > 0; ) | |
190 | if (tmp[--ii] == '/') | |
191 | break; | |
192 | if (ii < len - 1) | |
193 | return tmp + ii + (tmp[ii] == '/'); | |
194 | else if (tmp[ii] != '/') | |
195 | return tmp; | |
196 | else if (ii == 0) | |
197 | return tmp; | |
198 | else | |
199 | { | |
200 | while (ii > 0) | |
201 | if (tmp[--ii] == '/') | |
202 | break; | |
203 | if (tmp[ii] == '/') | |
204 | ii++; | |
205 | for (len = 0; tmp[ii] != '/'; ) | |
206 | target[len++] = tmp[ii++]; | |
207 | target[len] = '\0'; | |
208 | return target; | |
209 | } | |
210 | } | |
211 | ||
212 | void sum(char* tmp) | |
213 | { | |
214 | FILE* file; | |
215 | MD5_CTX context; | |
216 | int len; | |
217 | unsigned char buffer[1024], digest[16]; | |
218 | ||
219 | if (NULL == (file = fopen(tmp, "r"))) | |
220 | exit(0); | |
221 | MD5Init(&context); | |
222 | while ((len = fread (buffer, 1, 1024, file))) | |
223 | MD5Update(&context, buffer, len); | |
224 | MD5Final(digest, &context); | |
225 | fclose(file); | |
226 | ||
227 | printf("%s: ", basename_into(tmp, (char*)buffer)); | |
228 | for (len = 0; len < 16; len++) | |
229 | printf ("%02x", digest[len]); | |
230 | printf("\n"); | |
231 | exit(0); | |
232 | } | |
233 | ||
234 | /* dump the loaded mechs list */ | |
235 | void show_mechs(void) | |
236 | { | |
237 | crypt_mechs_t* mechs; | |
238 | ||
239 | copyright(); | |
240 | printf("\nAvailable mechanisms:\n"); | |
241 | ||
242 | if(crypt_mechs_root == NULL) | |
243 | return; | |
244 | ||
245 | mechs = crypt_mechs_root->next; | |
246 | ||
247 | for(;;) | |
248 | { | |
249 | if(mechs == NULL) | |
250 | return; | |
251 | ||
252 | printf(" %s\t\t%s\n", mechs->mech->mechname, mechs->mech->description); | |
253 | ||
254 | mechs = mechs->next; | |
255 | } | |
256 | } | |
257 | ||
258 | /* load in the mech "modules" */ | |
259 | void load_mechs(void) | |
260 | { | |
261 | /* we need these loaded by hand for now */ | |
262 | ||
263 | ircd_register_crypt_native(); | |
264 | ircd_register_crypt_smd5(); | |
265 | ircd_register_crypt_plain(); /* yes I know it's slightly pointless */ | |
266 | ||
267 | return; | |
268 | } | |
269 | ||
270 | crypt_mechs_t* hunt_mech(const char* mechname) | |
271 | { | |
272 | crypt_mechs_t* mech; | |
273 | ||
274 | assert(NULL != mechname); | |
275 | ||
276 | if(crypt_mechs_root == NULL) | |
277 | return NULL; | |
278 | ||
279 | mech = crypt_mechs_root->next; | |
280 | ||
281 | for(;;) | |
282 | { | |
283 | if(mech == NULL) | |
284 | return NULL; | |
285 | ||
286 | if(0 == (ircd_strcmp(mech->mech->mechname, mechname))) | |
287 | return mech; | |
288 | ||
289 | mech = mech->next; | |
290 | } | |
291 | } | |
292 | ||
293 | char* crypt_pass(const char* pw, const char* mech) | |
294 | { | |
295 | crypt_mechs_t* crypt_mech; | |
296 | char* salt, *untagged, *tagged; | |
297 | ||
298 | assert(NULL != pw); | |
299 | assert(NULL != mech); | |
300 | ||
301 | Debug((DEBUG_DEBUG, "pw = %s\n", pw)); | |
302 | Debug((DEBUG_DEBUG, "mech = %s\n", mech)); | |
303 | ||
304 | if (NULL == (crypt_mech = hunt_mech(mech))) | |
305 | { | |
306 | printf("Unable to find mechanism %s\n", mech); | |
307 | return NULL; | |
308 | } | |
309 | ||
310 | salt = make_salt(default_salts); | |
311 | ||
312 | untagged = (char *)CryptFunc(crypt_mech->mech)(pw, salt); | |
313 | tagged = (char *)MyMalloc(strlen(untagged)+CryptTokSize(crypt_mech->mech)+1); | |
314 | memset(tagged, 0, strlen(untagged)+CryptTokSize(crypt_mech->mech)+1); | |
315 | strncpy(tagged, CryptTok(crypt_mech->mech), CryptTokSize(crypt_mech->mech)); | |
316 | strncpy(tagged+CryptTokSize(crypt_mech->mech), untagged, strlen(untagged)); | |
317 | ||
318 | return tagged; | |
319 | } | |
320 | ||
321 | char* parse_arguments(int argc, char **argv) | |
322 | { | |
323 | int len = 0, c = 0; | |
324 | const char* options = "a:d:lm:u:y:5:"; | |
325 | ||
326 | umkpasswd_conf = (umkpasswd_conf_t*)MyMalloc(sizeof(umkpasswd_conf_t)); | |
327 | ||
328 | umkpasswd_conf->flags = 0; | |
329 | umkpasswd_conf->debuglevel = 0; | |
330 | umkpasswd_conf->operclass = 0; | |
331 | umkpasswd_conf->user = NULL; | |
332 | umkpasswd_conf->mech = NULL; | |
333 | ||
334 | ||
335 | len = strlen(DPATH) + strlen(CPATH) + 2; | |
336 | umkpasswd_conf->conf = (char *)MyMalloc(len*sizeof(char)); | |
337 | memset(umkpasswd_conf->conf, 0, len*sizeof(char)); | |
338 | ircd_strncpy(umkpasswd_conf->conf, DPATH, strlen(DPATH)); | |
339 | *((umkpasswd_conf->conf) + strlen(DPATH)) = '/'; | |
340 | ircd_strncpy((umkpasswd_conf->conf) + strlen(DPATH) + 1, CPATH, strlen(CPATH)); | |
341 | ||
342 | len = 0; | |
343 | ||
344 | while ((EOF != (c = getopt(argc, argv, options))) && !len) | |
345 | { | |
346 | switch (c) | |
347 | { | |
348 | case '5': | |
349 | sum(optarg); | |
350 | break; | |
351 | ||
352 | case 'y': | |
353 | umkpasswd_conf->operclass = atoi(optarg); | |
354 | if (umkpasswd_conf->operclass < 0) | |
355 | umkpasswd_conf->operclass = 0; | |
356 | break; | |
357 | ||
358 | case 'u': | |
359 | if(umkpasswd_conf->flags & ACT_ADDOPER) | |
360 | { | |
361 | fprintf(stderr, "-a and -u are mutually exclusive. Use either or neither.\n"); | |
362 | abort(); /* b0rk b0rk b0rk */ | |
363 | } | |
364 | ||
365 | umkpasswd_conf->flags |= ACT_UPDOPER; | |
366 | umkpasswd_conf->user = optarg; | |
367 | break; | |
368 | ||
369 | case 'm': | |
370 | umkpasswd_conf->mech = optarg; | |
371 | break; | |
372 | ||
373 | case 'l': | |
374 | load_mechs(); | |
375 | show_mechs(); | |
376 | exit(0); | |
377 | break; | |
378 | ||
379 | case 'd': | |
380 | umkpasswd_conf->debuglevel = atoi(optarg); | |
381 | if (umkpasswd_conf->debuglevel < 0) | |
382 | umkpasswd_conf->debuglevel = 0; | |
383 | break; | |
384 | ||
385 | case 'c': | |
386 | umkpasswd_conf->conf = optarg; | |
387 | break; | |
388 | ||
389 | case 'a': | |
390 | if(umkpasswd_conf->flags & ACT_UPDOPER) | |
391 | { | |
392 | fprintf(stderr, "-a and -u are mutually exclusive. Use either or neither.\n"); | |
393 | abort(); /* b0rk b0rk b0rk */ | |
394 | } | |
395 | ||
396 | umkpasswd_conf->flags |= ACT_ADDOPER; | |
397 | umkpasswd_conf->user = optarg; | |
398 | break; | |
399 | ||
400 | default: | |
401 | /* unknown option - spit out syntax and b0rk */ | |
402 | show_help(); | |
403 | abort(); | |
404 | break; | |
405 | } | |
406 | } | |
407 | ||
408 | Debug((DEBUG_DEBUG, "flags = %d", umkpasswd_conf->flags)); | |
409 | Debug((DEBUG_DEBUG, "operclass = %d", umkpasswd_conf->operclass)); | |
410 | Debug((DEBUG_DEBUG, "debug = %d", umkpasswd_conf->debuglevel)); | |
411 | ||
412 | if (NULL != umkpasswd_conf->mech) | |
413 | Debug((DEBUG_DEBUG, "mech = %s", umkpasswd_conf->mech)); | |
414 | else | |
415 | Debug((DEBUG_DEBUG, "mech is unset")); | |
416 | ||
417 | if (NULL != umkpasswd_conf->conf) | |
418 | Debug((DEBUG_DEBUG, "conf = %s", umkpasswd_conf->conf)); | |
419 | else | |
420 | Debug((DEBUG_DEBUG, "conf is unset")); | |
421 | ||
422 | if (NULL != umkpasswd_conf->user) | |
423 | Debug((DEBUG_DEBUG, "user = %s", umkpasswd_conf->user)); | |
424 | else | |
425 | Debug((DEBUG_DEBUG, "user is unset")); | |
426 | ||
427 | /* anything left over should be password */ | |
428 | return argv[optind]; | |
429 | } | |
430 | ||
431 | int main(int argc, char **argv) | |
432 | { | |
433 | char* pw, *crypted_pw; | |
434 | ||
435 | crypt_mechs_root = (crypt_mechs_t*)MyMalloc(sizeof(crypt_mechs_t)); | |
436 | crypt_mechs_root->mech = NULL; | |
437 | crypt_mechs_root->next = crypt_mechs_root->prev = NULL; | |
438 | ||
439 | if (argc < 2) | |
440 | { | |
441 | show_help(); | |
442 | exit(0); | |
443 | } | |
444 | ||
445 | pw = parse_arguments(argc, argv); | |
446 | load_mechs(); | |
447 | ||
448 | if (NULL == umkpasswd_conf->mech) | |
449 | { | |
450 | fprintf(stderr, "No mechanism specified.\n"); | |
451 | abort(); | |
452 | } | |
453 | ||
454 | if (NULL == pw) | |
455 | { | |
456 | pw = getpass("Password: "); | |
457 | } | |
458 | crypted_pw = crypt_pass(pw, umkpasswd_conf->mech); | |
459 | ||
460 | printf("Crypted Pass: %s\n", crypted_pw); | |
461 | memset(pw, 0, strlen(pw)); | |
462 | ||
463 | return 0; | |
464 | } |