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