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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: userdb.c,v 1.4 1997/08/20 16:24:58 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 1.4 1997/08/20 16:24:58 mdw |
33 | * Patch memory leak. Rename `userdb_reinit' to `userdb_end' for more |
34 | * sensible restart. |
35 | * |
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36 | * Revision 1.3 1997/08/07 09:44:29 mdw |
37 | * Read NIS-based passwords from the YP server directly, rather than using |
38 | * `popen(ypcat)', which is probably both slower and less secure. |
39 | * |
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40 | * Revision 1.2 1997/08/04 10:24:26 mdw |
41 | * Sources placed under CVS control. |
42 | * |
43 | * Revision 1.1 1997/07/21 13:47:43 mdw |
c4f2d992 |
44 | * Initial revision |
45 | * |
46 | */ |
47 | |
48 | /*----- Header files ------------------------------------------------------*/ |
49 | |
50 | /* --- ANSI headers --- */ |
51 | |
52 | #include <ctype.h> |
53 | #include <errno.h> |
54 | #include <stdio.h> |
55 | #include <stdlib.h> |
56 | #include <string.h> |
57 | |
58 | /* --- Unix headers --- */ |
59 | |
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60 | #include "config.h" |
61 | |
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62 | #include <sys/types.h> |
63 | |
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64 | #ifdef HAVE_YP |
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65 | # include <rpc/rpc.h> |
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66 | # include <rpcsvc/ypclnt.h> |
67 | # include <rpcsvc/yp_prot.h> |
68 | #endif |
69 | |
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70 | #include <grp.h> |
71 | #include <pwd.h> |
72 | #include <unistd.h> |
73 | |
74 | /* --- Local headers --- */ |
75 | |
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76 | #include "become.h" |
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77 | #include "sym.h" |
78 | #include "userdb.h" |
79 | #include "utils.h" |
80 | |
81 | /*----- Type definitions --------------------------------------------------*/ |
82 | |
83 | /* --- A map link --- */ |
84 | |
85 | typedef struct userdb__node { |
86 | struct userdb__node *next; |
87 | void *rec; |
88 | } userdb__node; |
89 | |
90 | /* --- A reference to a real record --- */ |
91 | |
92 | typedef struct userdb__sym { |
93 | sym_base _base; |
94 | void *rec; |
95 | } userdb__sym; |
96 | |
97 | /* --- A name- and number-mapping --- */ |
98 | |
99 | typedef struct userdb__map { |
100 | sym_table nmap; |
101 | sym_table idmap; |
102 | userdb__node *list; |
103 | } userdb__map; |
104 | |
105 | /*----- Static variables --------------------------------------------------*/ |
106 | |
107 | static userdb__map userdb__users; /* Map of user info blocks */ |
108 | static sym_iter userdb__useri; /* Iterator for users */ |
109 | static userdb__map userdb__groups; /* Map of group info blocks */ |
110 | static sym_iter userdb__groupi; /* Iterator for groups */ |
111 | |
112 | /*----- Map management functions ------------------------------------------*/ |
113 | |
114 | /* --- @userdb__createMap@ --- * |
115 | * |
116 | * Arguments: @userdb__map *m@ = pointer to a map block |
117 | * |
118 | * Returns: --- |
119 | * |
120 | * Use: Initialises a map table. |
121 | */ |
122 | |
123 | static void userdb__createMap(userdb__map *m) |
124 | { |
125 | sym_createTable(&m->nmap); |
126 | sym_createTable(&m->idmap); |
127 | m->list = 0; |
128 | } |
129 | |
130 | /* --- @userdb__addToMap@ --- * |
131 | * |
132 | * Arguments: @userdb__map *m@ = pointer to the map block |
133 | * @const char *name@ = pointer to the item's name |
134 | * @int id@ = the item's id number |
135 | * @void *rec@ = pointer to the actual record |
136 | * |
137 | * Returns: --- |
138 | * |
139 | * Use: Adds an item to the given map. |
140 | */ |
141 | |
142 | static void userdb__addToMap(userdb__map *m, |
143 | const char *name, |
144 | int id, void *rec) |
145 | { |
146 | unsigned f; |
147 | userdb__sym *s; |
148 | userdb__node *n; |
149 | |
150 | s = sym_find(&m->nmap, name, -1, sizeof(*s), &f); |
151 | if (!f) |
152 | s->rec = rec; |
153 | |
154 | s = sym_find(&m->idmap, (char *)&id, sizeof(id), sizeof(*s), &f); |
155 | if (!f) |
156 | s->rec = rec; |
157 | |
158 | n = xmalloc(sizeof(*n)); |
159 | n->rec = rec; |
160 | n->next = m->list; |
161 | m->list = n; |
162 | } |
163 | |
164 | /* --- @userdb__byName@ --- * |
165 | * |
166 | * Arguments: @userdb__map *m@ = pointer to a map block |
167 | * @const char *name@ = name to look up |
168 | * |
169 | * Returns: A pointer to the appropriate block, or zero if not found. |
170 | * |
171 | * Use: Looks up a name in a mapping and returns the result. |
172 | */ |
173 | |
174 | static void *userdb__byName(userdb__map *m, const char *name) |
175 | { |
176 | userdb__sym *s = sym_find(&m->nmap, name, -1, 0, 0); |
177 | return (s ? s->rec : 0); |
178 | } |
179 | |
180 | /* --- @userdb__byId@ --- * |
181 | * |
182 | * Arguments: @userdb__map *m@ = pointer to a map block |
183 | * @int id@ = id number to find |
184 | * |
185 | * Returns: A pointer to the appropriate block, or zero if not found. |
186 | * |
187 | * Use: Looks up an ID in a mapping, and returns the result. |
188 | */ |
189 | |
190 | static void *userdb__byId(userdb__map *m, int id) |
191 | { |
192 | userdb__sym *s = sym_find(&m->idmap, (char *)&id, sizeof(id), 0, 0); |
193 | return (s ? s->rec : 0); |
194 | } |
195 | |
196 | /* --- @userdb__clearMap@ --- * |
197 | * |
198 | * Arguments: @userdb__map *m@ = pointer to a map block |
199 | * @void (*freerec)(void *rec)@ = pointer to a free-record proc |
200 | * |
201 | * Returns: --- |
202 | * |
203 | * Use: Clears a map, emptying it and releasing the memory it |
204 | * occupied. |
205 | */ |
206 | |
207 | static void userdb__clearMap(userdb__map *m, void (*freerec)(void *rec)) |
208 | { |
209 | userdb__node *n, *t; |
210 | |
211 | sym_destroyTable(&m->nmap); |
212 | sym_destroyTable(&m->idmap); |
213 | |
214 | for (n = m->list; n; n = t) { |
215 | t = n->next; |
216 | freerec(n->rec); |
217 | free(n); |
218 | } |
219 | } |
220 | |
221 | /*----- User and group block management -----------------------------------*/ |
222 | |
223 | /* --- @userdb__dumpUser@ --- * |
224 | * |
225 | * Arguments: @const struct passwd *pw@ = pointer to a user block |
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226 | * |
227 | * Returns: --- |
228 | * |
229 | * Use: Writes a user's informationt to a stream. |
230 | */ |
231 | |
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232 | #ifdef TRACING |
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233 | |
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234 | static void userdb__dumpUser(const struct passwd *pw) |
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235 | { |
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236 | trace(TRACE_DEBUG, |
237 | "debug: name `%s' passwd `%s' uid %i gid %i", |
238 | pw->pw_name, pw->pw_passwd, (int)pw->pw_uid, (int)pw->pw_gid); |
239 | trace(TRACE_DEBUG, |
240 | "debug: ... gecos `%s' home `%s' shell `%s'", |
241 | pw->pw_gecos, pw->pw_dir, pw->pw_shell); |
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242 | } |
243 | |
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244 | #endif |
245 | |
246 | /* --- @userdb_copyUser@ --- * |
247 | * |
248 | * Arguments: @struct passwd *pw@ = pointer to block to copy |
249 | * |
250 | * Returns: Pointer to the copy. |
251 | * |
252 | * Use: Copies a user block. The copy is `deep' so all the strings |
253 | * are copied too. Free the copy with @userdb_freeUser@ when |
254 | * you don't want it any more. |
255 | */ |
256 | |
257 | struct passwd *userdb_copyUser(struct passwd *pw) |
258 | { |
259 | struct passwd *npw; |
260 | |
261 | if (!pw) |
262 | return (0); |
263 | |
264 | npw = xmalloc(sizeof(*npw)); |
265 | |
266 | npw->pw_name = xstrdup(pw->pw_name); |
267 | npw->pw_passwd = xstrdup(pw->pw_passwd); |
268 | npw->pw_uid = pw->pw_uid; |
269 | npw->pw_gid = pw->pw_gid; |
270 | npw->pw_gecos = xstrdup(pw->pw_gecos); |
271 | npw->pw_dir = xstrdup(pw->pw_dir); |
272 | npw->pw_shell = xstrdup(pw->pw_shell); |
273 | |
274 | return (npw); |
275 | } |
276 | |
277 | /* --- @userdb__buildUser@ --- * |
278 | * |
279 | * Arguments: @char *s@ = pointer to user string |
280 | * |
281 | * Returns: Pointer to a user block. |
282 | * |
283 | * Use: Converts a line from a user file into a password entry. |
284 | * Note that the string is corrupted by @strtok@ while it gets |
285 | * parsed. |
286 | */ |
287 | |
288 | static struct passwd *userdb__buildUser(char *s) |
289 | { |
290 | struct passwd *pw = xmalloc(sizeof(*pw)); |
291 | |
292 | s = strtok(s, ":"); if (!s) goto tidy_0; pw->pw_name = xstrdup(s); |
293 | s = strtok(0, ":"); if (!s) goto tidy_1; pw->pw_passwd = xstrdup(s); |
294 | s = strtok(0, ":"); if (!s) goto tidy_2; pw->pw_uid = atoi(s); |
295 | s = strtok(0, ":"); if (!s) goto tidy_2; pw->pw_gid = atoi(s); |
296 | s = strtok(0, ":"); if (!s) goto tidy_2; pw->pw_gecos = xstrdup(s); |
297 | s = strtok(0, ":"); if (!s) goto tidy_3; pw->pw_dir = xstrdup(s); |
298 | s = strtok(0, ":"); if (!s) goto tidy_4; pw->pw_shell = xstrdup(s); |
299 | return (pw); |
300 | |
301 | /* --- Error handling --- */ |
302 | |
303 | tidy_4: |
304 | free(pw->pw_dir); |
305 | tidy_3: |
306 | free(pw->pw_gecos); |
307 | tidy_2: |
308 | free(pw->pw_passwd); |
309 | tidy_1: |
310 | free(pw->pw_name); |
311 | tidy_0: |
312 | free(pw); |
313 | |
314 | return (0); |
315 | } |
316 | |
317 | /* --- @userdb_freeUser@ --- * |
318 | * |
319 | * Arguments: @void *rec@ = pointer to a user record |
320 | * |
321 | * Returns: --- |
322 | * |
323 | * Use: Frees a user record. |
324 | */ |
325 | |
326 | void userdb_freeUser(void *rec) |
327 | { |
328 | struct passwd *pw; |
329 | |
330 | if (!rec) |
331 | return; |
332 | |
333 | pw = rec; |
334 | free(pw->pw_name); |
335 | free(pw->pw_passwd); |
336 | free(pw->pw_gecos); |
337 | free(pw->pw_dir); |
338 | free(pw->pw_shell); |
339 | free(pw); |
340 | } |
341 | |
342 | /* --- @userdb__dumpGroup@ --- * |
343 | * |
344 | * Arguments: @const struct group *gr@ = pointer to a group block |
345 | * @FILE *fp@ = pointer to stream to write on |
346 | * |
347 | * Returns: --- |
348 | * |
349 | * Use: Writes a group's information to a stream. |
350 | */ |
351 | |
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352 | #ifdef TRACING |
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353 | |
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354 | static void userdb__dumpGroup(const struct group *gr) |
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355 | { |
356 | char *const *p; |
357 | |
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358 | trace(TRACE_DEBUG, |
359 | "debug: name `%s' passwd `%s' gid %i", |
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360 | gr->gr_name, gr->gr_passwd, (int)gr->gr_gid); |
361 | for (p = gr->gr_mem; *p; p++) |
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362 | trace(TRACE_DEBUG,"debug: ... `%s'", *p); |
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363 | } |
364 | |
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365 | #endif |
366 | |
367 | /* --- @userdb_copyGroup@ --- * |
368 | * |
369 | * Arguments: @struct group *gr@ = pointer to group block |
370 | * |
371 | * Returns: Pointer to copied block |
372 | * |
373 | * Use: Copies a group block. The copy is `deep' so all the strings |
374 | * are copied too. Free the copy with @userdb_freeGroup@ when |
375 | * you don't want it any more. |
376 | */ |
377 | |
378 | struct group *userdb_copyGroup(struct group *gr) |
379 | { |
380 | struct group *ngr; |
381 | int i, max; |
382 | |
383 | if (!gr) |
384 | return (0); |
385 | |
386 | ngr = xmalloc(sizeof(*ngr)); |
387 | |
388 | ngr->gr_name = xstrdup(gr->gr_name); |
389 | ngr->gr_passwd = xstrdup(gr->gr_passwd); |
390 | ngr->gr_gid = gr->gr_gid; |
391 | |
392 | for (max = 0; gr->gr_mem[max]; max++) |
393 | ; |
394 | ngr->gr_mem = xmalloc((max + 1) * sizeof(char *)); |
395 | for (i = 0; i < max; i++) |
396 | ngr->gr_mem[i] = xstrdup(gr->gr_mem[i]); |
397 | ngr->gr_mem[max] = 0; |
398 | |
399 | return (ngr); |
400 | } |
401 | |
402 | /* --- @userdb__buildGroup@ --- * |
403 | * |
404 | * Arguments: @char *s@ = pointer to group line string |
405 | * |
406 | * Returns: Pointer to a group block |
407 | * |
408 | * Use: Parses an entry in the groups file. The string is garbled |
409 | * by @strtok@ as we go. |
410 | */ |
411 | |
412 | static struct group *userdb__buildGroup(char *s) |
413 | { |
414 | struct group *gr = xmalloc(sizeof(*gr)); |
415 | char *p; |
416 | int i; |
417 | |
418 | /* --- Do the easy bits --- */ |
419 | |
420 | s = strtok(s, ":"); if (!s) goto tidy_0; gr->gr_name = xstrdup(s); |
421 | s = strtok(0, ":"); if (!s) goto tidy_1; gr->gr_passwd = xstrdup(s); |
422 | s = strtok(0, ":"); if (!s) goto tidy_2; gr->gr_gid = atoi(s); |
423 | |
424 | /* --- Find the start of the member list --- */ |
425 | |
426 | s = strtok(0, ""); |
427 | if (!s) |
428 | goto tidy_2; |
429 | |
430 | /* --- Count the number of members --- */ |
431 | |
432 | p = s; |
433 | i = 0; |
434 | for (;;) { |
435 | i++; |
436 | if ((p = strpbrk(p, ",")) == 0) |
437 | break; |
438 | p++; |
439 | } |
440 | |
441 | /* --- Allocate the block and fill it --- */ |
442 | |
443 | gr->gr_mem = xmalloc((i + 1) * sizeof(char *)); |
444 | i = 0; |
445 | s = strtok(s, ","); |
446 | do { |
447 | gr->gr_mem[i++] = xstrdup(s); |
448 | s = strtok(0, ","); |
449 | } while (s); |
450 | gr->gr_mem[i] = 0; |
451 | |
452 | return (gr); |
453 | |
454 | /* --- Various tidying-up things --- */ |
455 | |
456 | tidy_2: |
457 | free(gr->gr_passwd); |
458 | tidy_1: |
459 | free(gr->gr_name); |
460 | tidy_0: |
461 | free(gr); |
462 | |
463 | return (0); |
464 | } |
465 | |
466 | /* --- @userdb_freeGroup@ --- * |
467 | * |
468 | * Arguments: @void *rec@ = pointer to a group record |
469 | * |
470 | * Returns: --- |
471 | * |
472 | * Use: Frees a group record. |
473 | */ |
474 | |
475 | void userdb_freeGroup(void *rec) |
476 | { |
477 | struct group *gr; |
478 | char **p; |
479 | |
480 | if (!rec) |
481 | return; |
482 | |
483 | gr = rec; |
484 | free(gr->gr_name); |
485 | free(gr->gr_passwd); |
486 | for (p = gr->gr_mem; *p; p++) |
487 | free(*p); |
488 | free(gr->gr_mem); |
489 | free(gr); |
490 | } |
491 | |
03f996bd |
492 | /*----- Answering queries -------------------------------------------------*/ |
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493 | |
494 | /* --- @userdb_userByName@, @userdb_userById@ --- * |
495 | * |
496 | * Arguments: @const char *name@ = pointer to user's name |
497 | * @uid_t id@ = user id to find |
498 | * |
499 | * Returns: Pointer to user block, or zero if not found. |
500 | * |
501 | * Use: Looks up a user by name or id. |
502 | */ |
503 | |
504 | struct passwd *userdb_userByName(const char *name) |
505 | { return (userdb__byName(&userdb__users, name)); } |
506 | |
507 | struct passwd *userdb_userById(uid_t id) |
508 | { return (userdb__byId(&userdb__users, id)); } |
509 | |
510 | /* --- @userdb_iterateUsers@, @userdb_iterateUsers_r@ --- * |
511 | * |
512 | * Arguments: @userdb_iter *i@ = pointer to a symbol table iterator object |
513 | * |
514 | * Returns: --- |
515 | * |
516 | * Use: Initialises an iteration for the user database. |
517 | */ |
518 | |
519 | void userdb_iterateUsers(void) |
520 | { userdb_iterateUsers_r(&userdb__useri); } |
521 | |
522 | void userdb_iterateUsers_r(userdb_iter *i) |
523 | { sym_createIter(i, &userdb__users.nmap); } |
524 | |
525 | /* --- @userdb_nextUser@, @userdb_nextUser_r@ --- * |
526 | * |
527 | * Arguments: @userdb_iter *i@ = pointer to a symbol table iterator oject |
528 | * |
529 | * Returns: Pointer to the next user block, or null. |
530 | * |
531 | * Use: Returns another user block. |
532 | */ |
533 | |
534 | struct passwd *userdb_nextUser(void) |
535 | { return (userdb_nextUser_r(&userdb__useri)); } |
536 | |
537 | struct passwd *userdb_nextUser_r(userdb_iter *i) |
538 | { |
539 | userdb__sym *s = sym_next(i); |
540 | return (s ? s->rec : 0); |
541 | } |
542 | |
543 | /* --- @userdb_groupByName@, @userdb_groupById@ --- * |
544 | * |
545 | * Arguments: @const char *name@ = pointer to group's name |
546 | * @gid_t id@ = group id to find |
547 | * |
548 | * Returns: Pointer to group block, or zero if not found. |
549 | * |
550 | * Use: Looks up a group by name or id. |
551 | */ |
552 | |
553 | struct group *userdb_groupByName(const char *name) |
554 | { return (userdb__byName(&userdb__groups, name)); } |
555 | |
556 | struct group *userdb_groupById(gid_t id) |
557 | { return (userdb__byId(&userdb__groups, id)); } |
558 | |
559 | /* --- @userdb_iterateGroups@, @userdb_iterateGroups_r@ --- * |
560 | * |
561 | * Arguments: @userdb_iter *i@ = pointer to a symbol table iterator object |
562 | * |
563 | * Returns: --- |
564 | * |
565 | * Use: Initialises an iteration for the group database. |
566 | */ |
567 | |
568 | void userdb_iterateGroups(void) |
569 | { userdb_iterateGroups_r(&userdb__groupi); } |
570 | |
571 | void userdb_iterateGroups_r(userdb_iter *i) |
572 | { sym_createIter(i, &userdb__groups.nmap); } |
573 | |
574 | /* --- @userdb_nextGroup@, @userdb_nextGroup_r@ --- * |
575 | * |
576 | * Arguments: @userdb_iter *i@ = pointer to a symbol table iterator oject |
577 | * |
578 | * Returns: Pointer to the next group block, or null. |
579 | * |
580 | * Use: Returns another group block. |
581 | */ |
582 | |
583 | struct group *userdb_nextGroup(void) |
584 | { return (userdb_nextGroup_r(&userdb__groupi)); } |
585 | |
586 | struct group *userdb_nextGroup_r(userdb_iter *i) |
587 | { |
588 | userdb__sym *s = sym_next(i); |
589 | return (s ? s->rec : 0); |
590 | } |
591 | |
03f996bd |
592 | /*----- Yellow pages support ----------------------------------------------*/ |
593 | |
594 | #ifdef HAVE_YP |
595 | |
596 | /* --- @userdb__foreachUser@ --- * |
597 | * |
598 | * Arguments: @int st@ = YP protocol-level status code |
599 | * @char *k@ = address of the key for this record |
600 | * @int ksz@ = size of the key |
601 | * @char *v@ = address of the value for this record |
602 | * @int vsz@ = size of the value |
603 | * @char *data@ = pointer to some data passed to me |
604 | * |
605 | * Returns: Zero to be called again, nonzero to end the enumeration. |
606 | * |
607 | * Use: Handles an incoming user record. |
608 | */ |
609 | |
610 | static int userdb__foreachUser(int st, char *k, int ksz, |
611 | char *v, int vsz, char *data) |
612 | { |
613 | char *cv; |
614 | struct passwd *pw; |
615 | |
616 | if (st != YP_TRUE) |
617 | return (-1); |
618 | cv = xmalloc(vsz + 1); |
619 | memcpy(cv, v, vsz); |
620 | cv[vsz] = 0; |
e893b83f |
621 | T( trace(TRACE_DEBUG, "debug: nis string: `%s'", cv); ) |
03f996bd |
622 | pw = userdb__buildUser(cv); |
e893b83f |
623 | if (pw && !userdb__byName(&userdb__users, pw->pw_name)) { |
624 | IF_TRACING(TRACE_DEBUG, userdb__dumpUser(pw); ) |
03f996bd |
625 | userdb__addToMap(&userdb__users, pw->pw_name, pw->pw_uid, pw); |
46cc26eb |
626 | } else |
627 | userdb_freeUser(pw); |
03f996bd |
628 | free(cv); |
629 | return (0); |
630 | } |
631 | |
632 | /* --- @userdb__foreachGroup@ --- * |
633 | * |
634 | * Arguments: @int st@ = YP protocol-level status code |
635 | * @char *k@ = address of the key for this record |
636 | * @int ksz@ = size of the key |
637 | * @char *v@ = address of the value for this record |
638 | * @int vsz@ = size of the value |
639 | * @char *data@ = pointer to some data passed to me |
640 | * |
641 | * Returns: Zero to be called again, nonzero to end the enumeration. |
642 | * |
643 | * Use: Handles an incoming user record. |
644 | */ |
645 | |
646 | static int userdb__foreachGroup(int st, char *k, int ksz, |
647 | char *v, int vsz, char *data) |
648 | { |
649 | char *cv; |
650 | struct group *gr; |
651 | |
652 | if (st != YP_TRUE) |
653 | return (-1); |
654 | cv = xmalloc(vsz + 1); |
655 | memcpy(cv, v, vsz); |
656 | cv[vsz] = 0; |
e893b83f |
657 | T( trace(TRACE_DEBUG, "debug: nis string: `%s'", cv); ) |
03f996bd |
658 | gr = userdb__buildGroup(cv); |
e893b83f |
659 | if (gr && !userdb__byName(&userdb__groups, gr->gr_name)) { |
660 | IF_TRACING(TRACE_DEBUG, userdb__dumpGroup(gr); ) |
03f996bd |
661 | userdb__addToMap(&userdb__groups, gr->gr_name, gr->gr_gid, gr); |
46cc26eb |
662 | } else |
663 | userdb_freeGroup(gr); |
03f996bd |
664 | free(cv); |
665 | return (0); |
666 | } |
667 | |
668 | /* --- @userdb_yp@ --- * |
669 | * |
670 | * Arguments: --- |
671 | * |
672 | * Returns: --- |
673 | * |
674 | * Use: Fetches the YP database of users. |
675 | */ |
676 | |
677 | void userdb_yp(void) |
678 | { |
679 | char *ypdom; |
680 | |
681 | /* --- Bind to a server --- */ |
682 | |
683 | if (yp_get_default_domain(&ypdom) || |
684 | yp_bind(ypdom)) |
685 | return; |
686 | |
e893b83f |
687 | T( trace(TRACE_DEBUG, "debug: adding NIS users"); ) |
688 | |
03f996bd |
689 | /* --- Fetch the users map --- */ |
690 | |
691 | { |
692 | static struct ypall_callback ucb = { userdb__foreachUser, 0 }; |
693 | yp_all(ypdom, "passwd.byuid", &ucb); |
694 | } |
695 | |
696 | /* --- Fetch the groups map --- */ |
697 | |
698 | { |
699 | static struct ypall_callback gcb = { userdb__foreachGroup, 0 }; |
700 | yp_all(ypdom, "group.bygid", &gcb); |
701 | } |
702 | |
703 | yp_unbind(ypdom); |
03f996bd |
704 | } |
705 | |
706 | #else |
707 | |
708 | void userdb_yp(void) { ; } |
709 | |
710 | #endif |
711 | |
712 | /*----- Building the databases --------------------------------------------*/ |
713 | |
714 | /* --- @userdb_local@ --- * |
715 | * |
716 | * Arguments: --- |
717 | * |
718 | * Returns: --- |
719 | * |
720 | * Use: Reads the local list of users into the maps. |
721 | */ |
722 | |
723 | void userdb_local(void) |
724 | { |
e893b83f |
725 | T( trace(TRACE_DEBUG, "debug: adding local users"); ) |
03f996bd |
726 | |
727 | /* --- Fetch users first --- */ |
728 | |
729 | { |
730 | struct passwd *pw; |
731 | |
732 | setpwent(); |
733 | while ((pw = getpwent()) != 0) { |
e893b83f |
734 | IF_TRACING(TRACE_DEBUG, userdb__dumpUser(pw); ) |
03f996bd |
735 | if (!userdb__byName(&userdb__users, pw->pw_name)) |
736 | userdb__addToMap(&userdb__users, pw->pw_name, pw->pw_uid, |
737 | userdb_copyUser(pw)); |
738 | } |
739 | endpwent(); |
740 | } |
741 | |
742 | /* --- Then fetch groups --- */ |
743 | |
744 | { |
745 | struct group *gr; |
746 | |
747 | setgrent(); |
748 | while ((gr = getgrent()) != 0) { |
e893b83f |
749 | IF_TRACING(TRACE_DEBUG, userdb__dumpGroup(gr); ) |
03f996bd |
750 | if (!userdb__byName(&userdb__groups, gr->gr_name)) |
751 | userdb__addToMap(&userdb__groups, gr->gr_name, gr->gr_gid, |
752 | userdb_copyGroup(gr)); |
753 | } |
754 | endgrent(); |
755 | } |
756 | } |
757 | |
c4f2d992 |
758 | /* --- @userdb_init@ --- * |
759 | * |
760 | * Arguments: --- |
761 | * |
762 | * Returns: --- |
763 | * |
764 | * Use: Initialises the user database. |
765 | */ |
766 | |
767 | void userdb_init(void) |
768 | { |
769 | userdb__createMap(&userdb__users); |
770 | userdb__createMap(&userdb__groups); |
771 | } |
772 | |
46cc26eb |
773 | /* --- @userdb_end@ --- * |
c4f2d992 |
774 | * |
775 | * Arguments: --- |
776 | * |
777 | * Returns: --- |
778 | * |
46cc26eb |
779 | * Use: Closes down the user database. |
c4f2d992 |
780 | */ |
781 | |
46cc26eb |
782 | void userdb_end(void) |
c4f2d992 |
783 | { |
784 | userdb__clearMap(&userdb__users, userdb_freeUser); |
785 | userdb__clearMap(&userdb__groups, userdb_freeGroup); |
c4f2d992 |
786 | } |
787 | |
788 | /*----- Test rig ----------------------------------------------------------*/ |
789 | |
790 | #ifdef TEST_RIG |
791 | |
792 | void dumpit(const char *msg) |
793 | { |
e893b83f |
794 | trace(TRACE_DEBUG, "debug: %s", msg); |
c4f2d992 |
795 | |
796 | { |
797 | struct passwd *pw; |
798 | for (userdb_iterateUsers(); (pw = userdb_nextUser()) != 0; ) |
e893b83f |
799 | userdb__dumpUser(pw); |
c4f2d992 |
800 | } |
801 | |
802 | { |
803 | struct group *gr; |
804 | for (userdb_iterateGroups(); (gr = userdb_nextGroup()) != 0; ) |
e893b83f |
805 | userdb__dumpGroup(gr); |
c4f2d992 |
806 | } |
807 | } |
808 | |
809 | int main(void) |
810 | { |
e893b83f |
811 | ego("userdb-test"); |
46cc26eb |
812 | /* traceon(stdout, TRACE_ALL); */ |
c4f2d992 |
813 | userdb_init(); |
e893b83f |
814 | userdb_local(); |
46cc26eb |
815 | userdb_yp(); |
816 | printf("loaded (%lu)\n", track_memused()); |
817 | getchar(); |
818 | for (;;) { |
819 | userdb_end(); |
820 | printf("cleared (%lu)\n", track_memused()); |
821 | /* track_memlist(); */ |
822 | userdb_init(); |
823 | userdb_local(); |
824 | userdb_yp(); |
825 | printf("reloaded (%lu)\n", track_memused()); |
826 | getchar(); |
827 | } |
c4f2d992 |
828 | return (0); |
829 | } |
830 | |
831 | #endif |
832 | |
833 | /*----- That's all, folks -------------------------------------------------*/ |