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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: userdb.c,v 1.3 1997/08/07 09:44:29 mdw Exp $ |
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4 | * |
5 | * User database management |
6 | * |
7 | * (c) 1997 EBI |
8 | */ |
9 | |
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10 | /*----- Licensing notice --------------------------------------------------* |
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11 | * |
12 | * This file is part of `become' |
13 | * |
14 | * `Become' is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * `Become' is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
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25 | * along with `become'; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: userdb.c,v $ |
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32 | * Revision 1.3 1997/08/07 09:44:29 mdw |
33 | * Read NIS-based passwords from the YP server directly, rather than using |
34 | * `popen(ypcat)', which is probably both slower and less secure. |
35 | * |
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36 | * Revision 1.2 1997/08/04 10:24:26 mdw |
37 | * Sources placed under CVS control. |
38 | * |
39 | * Revision 1.1 1997/07/21 13:47:43 mdw |
c4f2d992 |
40 | * Initial revision |
41 | * |
42 | */ |
43 | |
44 | /*----- Header files ------------------------------------------------------*/ |
45 | |
46 | /* --- ANSI headers --- */ |
47 | |
48 | #include <ctype.h> |
49 | #include <errno.h> |
50 | #include <stdio.h> |
51 | #include <stdlib.h> |
52 | #include <string.h> |
53 | |
54 | /* --- Unix headers --- */ |
55 | |
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56 | #include "config.h" |
57 | |
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58 | #include <sys/types.h> |
59 | |
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60 | #ifdef HAVE_YP |
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61 | # include <rpc/rpc.h> |
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62 | # include <rpcsvc/ypclnt.h> |
63 | # include <rpcsvc/yp_prot.h> |
64 | #endif |
65 | |
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66 | #include <grp.h> |
67 | #include <pwd.h> |
68 | #include <unistd.h> |
69 | |
70 | /* --- Local headers --- */ |
71 | |
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72 | #include "become.h" |
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73 | #include "sym.h" |
74 | #include "userdb.h" |
75 | #include "utils.h" |
76 | |
77 | /*----- Type definitions --------------------------------------------------*/ |
78 | |
79 | /* --- A map link --- */ |
80 | |
81 | typedef struct userdb__node { |
82 | struct userdb__node *next; |
83 | void *rec; |
84 | } userdb__node; |
85 | |
86 | /* --- A reference to a real record --- */ |
87 | |
88 | typedef struct userdb__sym { |
89 | sym_base _base; |
90 | void *rec; |
91 | } userdb__sym; |
92 | |
93 | /* --- A name- and number-mapping --- */ |
94 | |
95 | typedef struct userdb__map { |
96 | sym_table nmap; |
97 | sym_table idmap; |
98 | userdb__node *list; |
99 | } userdb__map; |
100 | |
101 | /*----- Static variables --------------------------------------------------*/ |
102 | |
103 | static userdb__map userdb__users; /* Map of user info blocks */ |
104 | static sym_iter userdb__useri; /* Iterator for users */ |
105 | static userdb__map userdb__groups; /* Map of group info blocks */ |
106 | static sym_iter userdb__groupi; /* Iterator for groups */ |
107 | |
108 | /*----- Map management functions ------------------------------------------*/ |
109 | |
110 | /* --- @userdb__createMap@ --- * |
111 | * |
112 | * Arguments: @userdb__map *m@ = pointer to a map block |
113 | * |
114 | * Returns: --- |
115 | * |
116 | * Use: Initialises a map table. |
117 | */ |
118 | |
119 | static void userdb__createMap(userdb__map *m) |
120 | { |
121 | sym_createTable(&m->nmap); |
122 | sym_createTable(&m->idmap); |
123 | m->list = 0; |
124 | } |
125 | |
126 | /* --- @userdb__addToMap@ --- * |
127 | * |
128 | * Arguments: @userdb__map *m@ = pointer to the map block |
129 | * @const char *name@ = pointer to the item's name |
130 | * @int id@ = the item's id number |
131 | * @void *rec@ = pointer to the actual record |
132 | * |
133 | * Returns: --- |
134 | * |
135 | * Use: Adds an item to the given map. |
136 | */ |
137 | |
138 | static void userdb__addToMap(userdb__map *m, |
139 | const char *name, |
140 | int id, void *rec) |
141 | { |
142 | unsigned f; |
143 | userdb__sym *s; |
144 | userdb__node *n; |
145 | |
146 | s = sym_find(&m->nmap, name, -1, sizeof(*s), &f); |
147 | if (!f) |
148 | s->rec = rec; |
149 | |
150 | s = sym_find(&m->idmap, (char *)&id, sizeof(id), sizeof(*s), &f); |
151 | if (!f) |
152 | s->rec = rec; |
153 | |
154 | n = xmalloc(sizeof(*n)); |
155 | n->rec = rec; |
156 | n->next = m->list; |
157 | m->list = n; |
158 | } |
159 | |
160 | /* --- @userdb__byName@ --- * |
161 | * |
162 | * Arguments: @userdb__map *m@ = pointer to a map block |
163 | * @const char *name@ = name to look up |
164 | * |
165 | * Returns: A pointer to the appropriate block, or zero if not found. |
166 | * |
167 | * Use: Looks up a name in a mapping and returns the result. |
168 | */ |
169 | |
170 | static void *userdb__byName(userdb__map *m, const char *name) |
171 | { |
172 | userdb__sym *s = sym_find(&m->nmap, name, -1, 0, 0); |
173 | return (s ? s->rec : 0); |
174 | } |
175 | |
176 | /* --- @userdb__byId@ --- * |
177 | * |
178 | * Arguments: @userdb__map *m@ = pointer to a map block |
179 | * @int id@ = id number to find |
180 | * |
181 | * Returns: A pointer to the appropriate block, or zero if not found. |
182 | * |
183 | * Use: Looks up an ID in a mapping, and returns the result. |
184 | */ |
185 | |
186 | static void *userdb__byId(userdb__map *m, int id) |
187 | { |
188 | userdb__sym *s = sym_find(&m->idmap, (char *)&id, sizeof(id), 0, 0); |
189 | return (s ? s->rec : 0); |
190 | } |
191 | |
192 | /* --- @userdb__clearMap@ --- * |
193 | * |
194 | * Arguments: @userdb__map *m@ = pointer to a map block |
195 | * @void (*freerec)(void *rec)@ = pointer to a free-record proc |
196 | * |
197 | * Returns: --- |
198 | * |
199 | * Use: Clears a map, emptying it and releasing the memory it |
200 | * occupied. |
201 | */ |
202 | |
203 | static void userdb__clearMap(userdb__map *m, void (*freerec)(void *rec)) |
204 | { |
205 | userdb__node *n, *t; |
206 | |
207 | sym_destroyTable(&m->nmap); |
208 | sym_destroyTable(&m->idmap); |
209 | |
210 | for (n = m->list; n; n = t) { |
211 | t = n->next; |
212 | freerec(n->rec); |
213 | free(n); |
214 | } |
215 | } |
216 | |
217 | /*----- User and group block management -----------------------------------*/ |
218 | |
219 | /* --- @userdb__dumpUser@ --- * |
220 | * |
221 | * Arguments: @const struct passwd *pw@ = pointer to a user block |
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222 | * |
223 | * Returns: --- |
224 | * |
225 | * Use: Writes a user's informationt to a stream. |
226 | */ |
227 | |
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228 | #ifdef TRACING |
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229 | |
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230 | static void userdb__dumpUser(const struct passwd *pw) |
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231 | { |
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232 | trace(TRACE_DEBUG, |
233 | "debug: name `%s' passwd `%s' uid %i gid %i", |
234 | pw->pw_name, pw->pw_passwd, (int)pw->pw_uid, (int)pw->pw_gid); |
235 | trace(TRACE_DEBUG, |
236 | "debug: ... gecos `%s' home `%s' shell `%s'", |
237 | pw->pw_gecos, pw->pw_dir, pw->pw_shell); |
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238 | } |
239 | |
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240 | #endif |
241 | |
242 | /* --- @userdb_copyUser@ --- * |
243 | * |
244 | * Arguments: @struct passwd *pw@ = pointer to block to copy |
245 | * |
246 | * Returns: Pointer to the copy. |
247 | * |
248 | * Use: Copies a user block. The copy is `deep' so all the strings |
249 | * are copied too. Free the copy with @userdb_freeUser@ when |
250 | * you don't want it any more. |
251 | */ |
252 | |
253 | struct passwd *userdb_copyUser(struct passwd *pw) |
254 | { |
255 | struct passwd *npw; |
256 | |
257 | if (!pw) |
258 | return (0); |
259 | |
260 | npw = xmalloc(sizeof(*npw)); |
261 | |
262 | npw->pw_name = xstrdup(pw->pw_name); |
263 | npw->pw_passwd = xstrdup(pw->pw_passwd); |
264 | npw->pw_uid = pw->pw_uid; |
265 | npw->pw_gid = pw->pw_gid; |
266 | npw->pw_gecos = xstrdup(pw->pw_gecos); |
267 | npw->pw_dir = xstrdup(pw->pw_dir); |
268 | npw->pw_shell = xstrdup(pw->pw_shell); |
269 | |
270 | return (npw); |
271 | } |
272 | |
273 | /* --- @userdb__buildUser@ --- * |
274 | * |
275 | * Arguments: @char *s@ = pointer to user string |
276 | * |
277 | * Returns: Pointer to a user block. |
278 | * |
279 | * Use: Converts a line from a user file into a password entry. |
280 | * Note that the string is corrupted by @strtok@ while it gets |
281 | * parsed. |
282 | */ |
283 | |
284 | static struct passwd *userdb__buildUser(char *s) |
285 | { |
286 | struct passwd *pw = xmalloc(sizeof(*pw)); |
287 | |
288 | s = strtok(s, ":"); if (!s) goto tidy_0; pw->pw_name = xstrdup(s); |
289 | s = strtok(0, ":"); if (!s) goto tidy_1; pw->pw_passwd = xstrdup(s); |
290 | s = strtok(0, ":"); if (!s) goto tidy_2; pw->pw_uid = atoi(s); |
291 | s = strtok(0, ":"); if (!s) goto tidy_2; pw->pw_gid = atoi(s); |
292 | s = strtok(0, ":"); if (!s) goto tidy_2; pw->pw_gecos = xstrdup(s); |
293 | s = strtok(0, ":"); if (!s) goto tidy_3; pw->pw_dir = xstrdup(s); |
294 | s = strtok(0, ":"); if (!s) goto tidy_4; pw->pw_shell = xstrdup(s); |
295 | return (pw); |
296 | |
297 | /* --- Error handling --- */ |
298 | |
299 | tidy_4: |
300 | free(pw->pw_dir); |
301 | tidy_3: |
302 | free(pw->pw_gecos); |
303 | tidy_2: |
304 | free(pw->pw_passwd); |
305 | tidy_1: |
306 | free(pw->pw_name); |
307 | tidy_0: |
308 | free(pw); |
309 | |
310 | return (0); |
311 | } |
312 | |
313 | /* --- @userdb_freeUser@ --- * |
314 | * |
315 | * Arguments: @void *rec@ = pointer to a user record |
316 | * |
317 | * Returns: --- |
318 | * |
319 | * Use: Frees a user record. |
320 | */ |
321 | |
322 | void userdb_freeUser(void *rec) |
323 | { |
324 | struct passwd *pw; |
325 | |
326 | if (!rec) |
327 | return; |
328 | |
329 | pw = rec; |
330 | free(pw->pw_name); |
331 | free(pw->pw_passwd); |
332 | free(pw->pw_gecos); |
333 | free(pw->pw_dir); |
334 | free(pw->pw_shell); |
335 | free(pw); |
336 | } |
337 | |
338 | /* --- @userdb__dumpGroup@ --- * |
339 | * |
340 | * Arguments: @const struct group *gr@ = pointer to a group block |
341 | * @FILE *fp@ = pointer to stream to write on |
342 | * |
343 | * Returns: --- |
344 | * |
345 | * Use: Writes a group's information to a stream. |
346 | */ |
347 | |
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348 | #ifdef TRACING |
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349 | |
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350 | static void userdb__dumpGroup(const struct group *gr) |
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351 | { |
352 | char *const *p; |
353 | |
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354 | trace(TRACE_DEBUG, |
355 | "debug: name `%s' passwd `%s' gid %i", |
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356 | gr->gr_name, gr->gr_passwd, (int)gr->gr_gid); |
357 | for (p = gr->gr_mem; *p; p++) |
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358 | trace(TRACE_DEBUG,"debug: ... `%s'", *p); |
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359 | } |
360 | |
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361 | #endif |
362 | |
363 | /* --- @userdb_copyGroup@ --- * |
364 | * |
365 | * Arguments: @struct group *gr@ = pointer to group block |
366 | * |
367 | * Returns: Pointer to copied block |
368 | * |
369 | * Use: Copies a group block. The copy is `deep' so all the strings |
370 | * are copied too. Free the copy with @userdb_freeGroup@ when |
371 | * you don't want it any more. |
372 | */ |
373 | |
374 | struct group *userdb_copyGroup(struct group *gr) |
375 | { |
376 | struct group *ngr; |
377 | int i, max; |
378 | |
379 | if (!gr) |
380 | return (0); |
381 | |
382 | ngr = xmalloc(sizeof(*ngr)); |
383 | |
384 | ngr->gr_name = xstrdup(gr->gr_name); |
385 | ngr->gr_passwd = xstrdup(gr->gr_passwd); |
386 | ngr->gr_gid = gr->gr_gid; |
387 | |
388 | for (max = 0; gr->gr_mem[max]; max++) |
389 | ; |
390 | ngr->gr_mem = xmalloc((max + 1) * sizeof(char *)); |
391 | for (i = 0; i < max; i++) |
392 | ngr->gr_mem[i] = xstrdup(gr->gr_mem[i]); |
393 | ngr->gr_mem[max] = 0; |
394 | |
395 | return (ngr); |
396 | } |
397 | |
398 | /* --- @userdb__buildGroup@ --- * |
399 | * |
400 | * Arguments: @char *s@ = pointer to group line string |
401 | * |
402 | * Returns: Pointer to a group block |
403 | * |
404 | * Use: Parses an entry in the groups file. The string is garbled |
405 | * by @strtok@ as we go. |
406 | */ |
407 | |
408 | static struct group *userdb__buildGroup(char *s) |
409 | { |
410 | struct group *gr = xmalloc(sizeof(*gr)); |
411 | char *p; |
412 | int i; |
413 | |
414 | /* --- Do the easy bits --- */ |
415 | |
416 | s = strtok(s, ":"); if (!s) goto tidy_0; gr->gr_name = xstrdup(s); |
417 | s = strtok(0, ":"); if (!s) goto tidy_1; gr->gr_passwd = xstrdup(s); |
418 | s = strtok(0, ":"); if (!s) goto tidy_2; gr->gr_gid = atoi(s); |
419 | |
420 | /* --- Find the start of the member list --- */ |
421 | |
422 | s = strtok(0, ""); |
423 | if (!s) |
424 | goto tidy_2; |
425 | |
426 | /* --- Count the number of members --- */ |
427 | |
428 | p = s; |
429 | i = 0; |
430 | for (;;) { |
431 | i++; |
432 | if ((p = strpbrk(p, ",")) == 0) |
433 | break; |
434 | p++; |
435 | } |
436 | |
437 | /* --- Allocate the block and fill it --- */ |
438 | |
439 | gr->gr_mem = xmalloc((i + 1) * sizeof(char *)); |
440 | i = 0; |
441 | s = strtok(s, ","); |
442 | do { |
443 | gr->gr_mem[i++] = xstrdup(s); |
444 | s = strtok(0, ","); |
445 | } while (s); |
446 | gr->gr_mem[i] = 0; |
447 | |
448 | return (gr); |
449 | |
450 | /* --- Various tidying-up things --- */ |
451 | |
452 | tidy_2: |
453 | free(gr->gr_passwd); |
454 | tidy_1: |
455 | free(gr->gr_name); |
456 | tidy_0: |
457 | free(gr); |
458 | |
459 | return (0); |
460 | } |
461 | |
462 | /* --- @userdb_freeGroup@ --- * |
463 | * |
464 | * Arguments: @void *rec@ = pointer to a group record |
465 | * |
466 | * Returns: --- |
467 | * |
468 | * Use: Frees a group record. |
469 | */ |
470 | |
471 | void userdb_freeGroup(void *rec) |
472 | { |
473 | struct group *gr; |
474 | char **p; |
475 | |
476 | if (!rec) |
477 | return; |
478 | |
479 | gr = rec; |
480 | free(gr->gr_name); |
481 | free(gr->gr_passwd); |
482 | for (p = gr->gr_mem; *p; p++) |
483 | free(*p); |
484 | free(gr->gr_mem); |
485 | free(gr); |
486 | } |
487 | |
03f996bd |
488 | /*----- Answering queries -------------------------------------------------*/ |
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489 | |
490 | /* --- @userdb_userByName@, @userdb_userById@ --- * |
491 | * |
492 | * Arguments: @const char *name@ = pointer to user's name |
493 | * @uid_t id@ = user id to find |
494 | * |
495 | * Returns: Pointer to user block, or zero if not found. |
496 | * |
497 | * Use: Looks up a user by name or id. |
498 | */ |
499 | |
500 | struct passwd *userdb_userByName(const char *name) |
501 | { return (userdb__byName(&userdb__users, name)); } |
502 | |
503 | struct passwd *userdb_userById(uid_t id) |
504 | { return (userdb__byId(&userdb__users, id)); } |
505 | |
506 | /* --- @userdb_iterateUsers@, @userdb_iterateUsers_r@ --- * |
507 | * |
508 | * Arguments: @userdb_iter *i@ = pointer to a symbol table iterator object |
509 | * |
510 | * Returns: --- |
511 | * |
512 | * Use: Initialises an iteration for the user database. |
513 | */ |
514 | |
515 | void userdb_iterateUsers(void) |
516 | { userdb_iterateUsers_r(&userdb__useri); } |
517 | |
518 | void userdb_iterateUsers_r(userdb_iter *i) |
519 | { sym_createIter(i, &userdb__users.nmap); } |
520 | |
521 | /* --- @userdb_nextUser@, @userdb_nextUser_r@ --- * |
522 | * |
523 | * Arguments: @userdb_iter *i@ = pointer to a symbol table iterator oject |
524 | * |
525 | * Returns: Pointer to the next user block, or null. |
526 | * |
527 | * Use: Returns another user block. |
528 | */ |
529 | |
530 | struct passwd *userdb_nextUser(void) |
531 | { return (userdb_nextUser_r(&userdb__useri)); } |
532 | |
533 | struct passwd *userdb_nextUser_r(userdb_iter *i) |
534 | { |
535 | userdb__sym *s = sym_next(i); |
536 | return (s ? s->rec : 0); |
537 | } |
538 | |
539 | /* --- @userdb_groupByName@, @userdb_groupById@ --- * |
540 | * |
541 | * Arguments: @const char *name@ = pointer to group's name |
542 | * @gid_t id@ = group id to find |
543 | * |
544 | * Returns: Pointer to group block, or zero if not found. |
545 | * |
546 | * Use: Looks up a group by name or id. |
547 | */ |
548 | |
549 | struct group *userdb_groupByName(const char *name) |
550 | { return (userdb__byName(&userdb__groups, name)); } |
551 | |
552 | struct group *userdb_groupById(gid_t id) |
553 | { return (userdb__byId(&userdb__groups, id)); } |
554 | |
555 | /* --- @userdb_iterateGroups@, @userdb_iterateGroups_r@ --- * |
556 | * |
557 | * Arguments: @userdb_iter *i@ = pointer to a symbol table iterator object |
558 | * |
559 | * Returns: --- |
560 | * |
561 | * Use: Initialises an iteration for the group database. |
562 | */ |
563 | |
564 | void userdb_iterateGroups(void) |
565 | { userdb_iterateGroups_r(&userdb__groupi); } |
566 | |
567 | void userdb_iterateGroups_r(userdb_iter *i) |
568 | { sym_createIter(i, &userdb__groups.nmap); } |
569 | |
570 | /* --- @userdb_nextGroup@, @userdb_nextGroup_r@ --- * |
571 | * |
572 | * Arguments: @userdb_iter *i@ = pointer to a symbol table iterator oject |
573 | * |
574 | * Returns: Pointer to the next group block, or null. |
575 | * |
576 | * Use: Returns another group block. |
577 | */ |
578 | |
579 | struct group *userdb_nextGroup(void) |
580 | { return (userdb_nextGroup_r(&userdb__groupi)); } |
581 | |
582 | struct group *userdb_nextGroup_r(userdb_iter *i) |
583 | { |
584 | userdb__sym *s = sym_next(i); |
585 | return (s ? s->rec : 0); |
586 | } |
587 | |
03f996bd |
588 | /*----- Yellow pages support ----------------------------------------------*/ |
589 | |
590 | #ifdef HAVE_YP |
591 | |
592 | /* --- @userdb__foreachUser@ --- * |
593 | * |
594 | * Arguments: @int st@ = YP protocol-level status code |
595 | * @char *k@ = address of the key for this record |
596 | * @int ksz@ = size of the key |
597 | * @char *v@ = address of the value for this record |
598 | * @int vsz@ = size of the value |
599 | * @char *data@ = pointer to some data passed to me |
600 | * |
601 | * Returns: Zero to be called again, nonzero to end the enumeration. |
602 | * |
603 | * Use: Handles an incoming user record. |
604 | */ |
605 | |
606 | static int userdb__foreachUser(int st, char *k, int ksz, |
607 | char *v, int vsz, char *data) |
608 | { |
609 | char *cv; |
610 | struct passwd *pw; |
611 | |
612 | if (st != YP_TRUE) |
613 | return (-1); |
614 | cv = xmalloc(vsz + 1); |
615 | memcpy(cv, v, vsz); |
616 | cv[vsz] = 0; |
e893b83f |
617 | T( trace(TRACE_DEBUG, "debug: nis string: `%s'", cv); ) |
03f996bd |
618 | pw = userdb__buildUser(cv); |
e893b83f |
619 | if (pw && !userdb__byName(&userdb__users, pw->pw_name)) { |
620 | IF_TRACING(TRACE_DEBUG, userdb__dumpUser(pw); ) |
03f996bd |
621 | userdb__addToMap(&userdb__users, pw->pw_name, pw->pw_uid, pw); |
e893b83f |
622 | } |
03f996bd |
623 | free(cv); |
624 | return (0); |
625 | } |
626 | |
627 | /* --- @userdb__foreachGroup@ --- * |
628 | * |
629 | * Arguments: @int st@ = YP protocol-level status code |
630 | * @char *k@ = address of the key for this record |
631 | * @int ksz@ = size of the key |
632 | * @char *v@ = address of the value for this record |
633 | * @int vsz@ = size of the value |
634 | * @char *data@ = pointer to some data passed to me |
635 | * |
636 | * Returns: Zero to be called again, nonzero to end the enumeration. |
637 | * |
638 | * Use: Handles an incoming user record. |
639 | */ |
640 | |
641 | static int userdb__foreachGroup(int st, char *k, int ksz, |
642 | char *v, int vsz, char *data) |
643 | { |
644 | char *cv; |
645 | struct group *gr; |
646 | |
647 | if (st != YP_TRUE) |
648 | return (-1); |
649 | cv = xmalloc(vsz + 1); |
650 | memcpy(cv, v, vsz); |
651 | cv[vsz] = 0; |
e893b83f |
652 | T( trace(TRACE_DEBUG, "debug: nis string: `%s'", cv); ) |
03f996bd |
653 | gr = userdb__buildGroup(cv); |
e893b83f |
654 | if (gr && !userdb__byName(&userdb__groups, gr->gr_name)) { |
655 | IF_TRACING(TRACE_DEBUG, userdb__dumpGroup(gr); ) |
03f996bd |
656 | userdb__addToMap(&userdb__groups, gr->gr_name, gr->gr_gid, gr); |
e893b83f |
657 | } |
03f996bd |
658 | free(cv); |
659 | return (0); |
660 | } |
661 | |
662 | /* --- @userdb_yp@ --- * |
663 | * |
664 | * Arguments: --- |
665 | * |
666 | * Returns: --- |
667 | * |
668 | * Use: Fetches the YP database of users. |
669 | */ |
670 | |
671 | void userdb_yp(void) |
672 | { |
673 | char *ypdom; |
674 | |
675 | /* --- Bind to a server --- */ |
676 | |
677 | if (yp_get_default_domain(&ypdom) || |
678 | yp_bind(ypdom)) |
679 | return; |
680 | |
e893b83f |
681 | T( trace(TRACE_DEBUG, "debug: adding NIS users"); ) |
682 | |
03f996bd |
683 | /* --- Fetch the users map --- */ |
684 | |
685 | { |
686 | static struct ypall_callback ucb = { userdb__foreachUser, 0 }; |
687 | yp_all(ypdom, "passwd.byuid", &ucb); |
688 | } |
689 | |
690 | /* --- Fetch the groups map --- */ |
691 | |
692 | { |
693 | static struct ypall_callback gcb = { userdb__foreachGroup, 0 }; |
694 | yp_all(ypdom, "group.bygid", &gcb); |
695 | } |
696 | |
697 | yp_unbind(ypdom); |
03f996bd |
698 | } |
699 | |
700 | #else |
701 | |
702 | void userdb_yp(void) { ; } |
703 | |
704 | #endif |
705 | |
706 | /*----- Building the databases --------------------------------------------*/ |
707 | |
708 | /* --- @userdb_local@ --- * |
709 | * |
710 | * Arguments: --- |
711 | * |
712 | * Returns: --- |
713 | * |
714 | * Use: Reads the local list of users into the maps. |
715 | */ |
716 | |
717 | void userdb_local(void) |
718 | { |
e893b83f |
719 | T( trace(TRACE_DEBUG, "debug: adding local users"); ) |
03f996bd |
720 | |
721 | /* --- Fetch users first --- */ |
722 | |
723 | { |
724 | struct passwd *pw; |
725 | |
726 | setpwent(); |
727 | while ((pw = getpwent()) != 0) { |
e893b83f |
728 | IF_TRACING(TRACE_DEBUG, userdb__dumpUser(pw); ) |
03f996bd |
729 | if (!userdb__byName(&userdb__users, pw->pw_name)) |
730 | userdb__addToMap(&userdb__users, pw->pw_name, pw->pw_uid, |
731 | userdb_copyUser(pw)); |
732 | } |
733 | endpwent(); |
734 | } |
735 | |
736 | /* --- Then fetch groups --- */ |
737 | |
738 | { |
739 | struct group *gr; |
740 | |
741 | setgrent(); |
742 | while ((gr = getgrent()) != 0) { |
e893b83f |
743 | IF_TRACING(TRACE_DEBUG, userdb__dumpGroup(gr); ) |
03f996bd |
744 | if (!userdb__byName(&userdb__groups, gr->gr_name)) |
745 | userdb__addToMap(&userdb__groups, gr->gr_name, gr->gr_gid, |
746 | userdb_copyGroup(gr)); |
747 | } |
748 | endgrent(); |
749 | } |
750 | } |
751 | |
c4f2d992 |
752 | /* --- @userdb_init@ --- * |
753 | * |
754 | * Arguments: --- |
755 | * |
756 | * Returns: --- |
757 | * |
758 | * Use: Initialises the user database. |
759 | */ |
760 | |
761 | void userdb_init(void) |
762 | { |
763 | userdb__createMap(&userdb__users); |
764 | userdb__createMap(&userdb__groups); |
765 | } |
766 | |
767 | /* --- @userdb_reinit@ --- * |
768 | * |
769 | * Arguments: --- |
770 | * |
771 | * Returns: --- |
772 | * |
773 | * Use: Reinitialises the user database. |
774 | */ |
775 | |
776 | void userdb_reinit(void) |
777 | { |
778 | userdb__clearMap(&userdb__users, userdb_freeUser); |
779 | userdb__clearMap(&userdb__groups, userdb_freeGroup); |
780 | userdb_init(); |
781 | } |
782 | |
783 | /*----- Test rig ----------------------------------------------------------*/ |
784 | |
785 | #ifdef TEST_RIG |
786 | |
787 | void dumpit(const char *msg) |
788 | { |
e893b83f |
789 | trace(TRACE_DEBUG, "debug: %s", msg); |
c4f2d992 |
790 | |
791 | { |
792 | struct passwd *pw; |
793 | for (userdb_iterateUsers(); (pw = userdb_nextUser()) != 0; ) |
e893b83f |
794 | userdb__dumpUser(pw); |
c4f2d992 |
795 | } |
796 | |
797 | { |
798 | struct group *gr; |
799 | for (userdb_iterateGroups(); (gr = userdb_nextGroup()) != 0; ) |
e893b83f |
800 | userdb__dumpGroup(gr); |
c4f2d992 |
801 | } |
802 | } |
803 | |
804 | int main(void) |
805 | { |
e893b83f |
806 | ego("userdb-test"); |
807 | traceon(stderr, TRACE_ALL); |
c4f2d992 |
808 | userdb_init(); |
809 | dumpit("cleared"); |
c4f2d992 |
810 | userdb_yp(); |
811 | dumpit("yp"); |
e893b83f |
812 | userdb_local(); |
813 | dumpit("local"); |
c4f2d992 |
814 | return (0); |
815 | } |
816 | |
817 | #endif |
818 | |
819 | /*----- That's all, folks -------------------------------------------------*/ |