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r14577: BUG Fixes:
[Samba.git] / source / passdb / pdb_interface.c
blob7ff0214c72483106073b412135d720ead69b2659
1 /*
2 Unix SMB/CIFS implementation.
3 Password and authentication handling
4 Copyright (C) Andrew Bartlett 2002
5 Copyright (C) Jelmer Vernooij 2002
6 Copyright (C) Simo Sorce 2003
7 Copyright (C) Volker Lendecke 2006
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24 #include "includes.h"
25
26 #undef DBGC_CLASS
27 #define DBGC_CLASS DBGC_PASSDB
28
29 /* Cache of latest SAM lookup query */
30
31 static struct samu *csamuser = NULL;
32
33 static struct pdb_init_function_entry *backends = NULL;
34
35 static void lazy_initialize_passdb(void)
36 {
37 static BOOL initialized = False;
38 if(initialized)return;
39 static_init_pdb;
40 initialized = True;
41 }
42
43 static struct pdb_init_function_entry *pdb_find_backend_entry(const char *name);
44 static BOOL lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
45 const char **name,
46 enum SID_NAME_USE *psid_name_use,
47 union unid_t *unix_id);
48 /*******************************************************************
49 Clean up uninitialised passwords. The only way to tell
50 that these values are not 'real' is that they do not
51 have a valid last set time. Instead, the value is fixed at 0.
52 Therefore we use that as the key for 'is this a valid password'.
53 However, it is perfectly valid to have a 'default' last change
54 time, such LDAP with a missing attribute would produce.
55 ********************************************************************/
56
57 static void pdb_force_pw_initialization(struct samu *pass)
58 {
59 const uint8 *lm_pwd, *nt_pwd;
60
61 /* only reset a password if the last set time has been
62 explicitly been set to zero. A default last set time
63 is ignored */
64
65 if ( (pdb_get_init_flags(pass, PDB_PASSLASTSET) != PDB_DEFAULT)
66 && (pdb_get_pass_last_set_time(pass) == 0) )
67 {
68
69 if (pdb_get_init_flags(pass, PDB_LMPASSWD) != PDB_DEFAULT)
70 {
71 lm_pwd = pdb_get_lanman_passwd(pass);
72 if (lm_pwd)
73 pdb_set_lanman_passwd(pass, NULL, PDB_CHANGED);
74 }
75 if (pdb_get_init_flags(pass, PDB_NTPASSWD) != PDB_DEFAULT)
76 {
77 nt_pwd = pdb_get_nt_passwd(pass);
78 if (nt_pwd)
79 pdb_set_nt_passwd(pass, NULL, PDB_CHANGED);
80 }
81 }
82
83 return;
84 }
85
86 NTSTATUS smb_register_passdb(int version, const char *name, pdb_init_function init)
87 {
88 struct pdb_init_function_entry *entry = backends;
89
90 if(version != PASSDB_INTERFACE_VERSION) {
91 DEBUG(0,("Can't register passdb backend!\n"
92 "You tried to register a passdb module with PASSDB_INTERFACE_VERSION %d, "
93 "while this version of samba uses version %d\n",
94 version,PASSDB_INTERFACE_VERSION));
95 return NT_STATUS_OBJECT_TYPE_MISMATCH;
96 }
97
98 if (!name || !init) {
99 return NT_STATUS_INVALID_PARAMETER;
100 }
101
102 DEBUG(5,("Attempting to register passdb backend %s\n", name));
103
104 /* Check for duplicates */
105 if (pdb_find_backend_entry(name)) {
106 DEBUG(0,("There already is a passdb backend registered with the name %s!\n", name));
107 return NT_STATUS_OBJECT_NAME_COLLISION;
108 }
109
110 entry = SMB_XMALLOC_P(struct pdb_init_function_entry);
111 entry->name = smb_xstrdup(name);
112 entry->init = init;
113
114 DLIST_ADD(backends, entry);
115 DEBUG(5,("Successfully added passdb backend '%s'\n", name));
116 return NT_STATUS_OK;
117 }
118
119 static struct pdb_init_function_entry *pdb_find_backend_entry(const char *name)
120 {
121 struct pdb_init_function_entry *entry = backends;
122
123 while(entry) {
124 if (strcmp(entry->name, name)==0) return entry;
125 entry = entry->next;
126 }
127
128 return NULL;
129 }
130
131 /******************************************************************
132 Make a pdb_methods from scratch
133 *******************************************************************/
134
135 NTSTATUS make_pdb_method_name(struct pdb_methods **methods, const char *selected)
136 {
137 char *module_name = smb_xstrdup(selected);
138 char *module_location = NULL, *p;
139 struct pdb_init_function_entry *entry;
140 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
141
142 lazy_initialize_passdb();
143
144 p = strchr(module_name, ':');
145
146 if (p) {
147 *p = 0;
148 module_location = p+1;
149 trim_char(module_location, ' ', ' ');
150 }
151
152 trim_char(module_name, ' ', ' ');
153
154
155 DEBUG(5,("Attempting to find an passdb backend to match %s (%s)\n", selected, module_name));
156
157 entry = pdb_find_backend_entry(module_name);
158
159 /* Try to find a module that contains this module */
160 if (!entry) {
161 DEBUG(2,("No builtin backend found, trying to load plugin\n"));
162 if(NT_STATUS_IS_OK(smb_probe_module("pdb", module_name)) && !(entry = pdb_find_backend_entry(module_name))) {
163 DEBUG(0,("Plugin is available, but doesn't register passdb backend %s\n", module_name));
164 SAFE_FREE(module_name);
165 return NT_STATUS_UNSUCCESSFUL;
166 }
167 }
168
169 /* No such backend found */
170 if(!entry) {
171 DEBUG(0,("No builtin nor plugin backend for %s found\n", module_name));
172 SAFE_FREE(module_name);
173 return NT_STATUS_INVALID_PARAMETER;
174 }
175
176 DEBUG(5,("Found pdb backend %s\n", module_name));
177
178 if ( !NT_STATUS_IS_OK( nt_status = entry->init(methods, module_location) ) ) {
179 DEBUG(0,("pdb backend %s did not correctly init (error was %s)\n",
180 selected, nt_errstr(nt_status)));
181 SAFE_FREE(module_name);
182 return nt_status;
183 }
184
185 SAFE_FREE(module_name);
186
187 DEBUG(5,("pdb backend %s has a valid init\n", selected));
188
189 return nt_status;
190 }
191
192 /******************************************************************
193 Return an already initialised pdn_methods structure
194 *******************************************************************/
195
196 static struct pdb_methods *pdb_get_methods_reload( BOOL reload )
197 {
198 static struct pdb_methods *pdb = NULL;
199
200 if ( pdb && reload ) {
201 pdb->free_private_data( &(pdb->private_data) );
202 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
203 return NULL;
204 }
205 }
206
207 if ( !pdb ) {
208 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
209 return NULL;
210 }
211 }
212
213 return pdb;
214 }
215
216 static struct pdb_methods *pdb_get_methods(void)
217 {
218 return pdb_get_methods_reload(False);
219 }
220
221 /******************************************************************
222 Backward compatibility functions for the original passdb interface
223 *******************************************************************/
224
225 BOOL pdb_setsampwent(BOOL update, uint16 acb_mask)
226 {
227 struct pdb_methods *pdb = pdb_get_methods();
228
229 if ( !pdb ) {
230 return False;
231 }
232
233 return NT_STATUS_IS_OK(pdb->setsampwent(pdb, update, acb_mask));
234 }
235
236 void pdb_endsampwent(void)
237 {
238 struct pdb_methods *pdb = pdb_get_methods();
239
240 if ( !pdb ) {
241 return;
242 }
243
244 pdb->endsampwent(pdb);
245 }
246
247 BOOL pdb_getsampwent(struct samu *user)
248 {
249 struct pdb_methods *pdb = pdb_get_methods();
250
251 if ( !pdb ) {
252 return False;
253 }
254
255 if ( !NT_STATUS_IS_OK(pdb->getsampwent(pdb, user) ) ) {
256 return False;
257 }
258
259 pdb_force_pw_initialization( user );
260
261 return True;
262 }
263
264 BOOL pdb_getsampwnam(struct samu *sam_acct, const char *username)
265 {
266 struct pdb_methods *pdb = pdb_get_methods();
267
268 if ( !pdb ) {
269 return False;
270 }
271
272 if (!NT_STATUS_IS_OK(pdb->getsampwnam(pdb, sam_acct, username))) {
273 return False;
274 }
275
276 if ( csamuser ) {
277 TALLOC_FREE(csamuser);
278 }
279
280 pdb_force_pw_initialization( sam_acct );
281
282 if ( (csamuser = samu_new( NULL )) != NULL ) {
283 pdb_copy_sam_account(csamuser, sam_acct);
284 }
285
286 return True;
287 }
288
289 /**********************************************************************
290 **********************************************************************/
291
292 BOOL guest_user_info( struct samu *user )
293 {
294 struct passwd *pwd;
295 NTSTATUS result;
296 const char *guestname = lp_guestaccount();
297
298 if ( !(pwd = getpwnam_alloc( NULL, guestname ) ) ) {
299 DEBUG(0,("guest_user_info: Unable to locate guest account [%s]!\n",
300 guestname));
301 return False;
302 }
303
304 result = samu_set_unix(user, pwd );
305
306 TALLOC_FREE( pwd );
307
308 return NT_STATUS_IS_OK( result );
309 }
310
311 /**********************************************************************
312 **********************************************************************/
313
314 BOOL pdb_getsampwsid(struct samu *sam_acct, const DOM_SID *sid)
315 {
316 struct pdb_methods *pdb;
317 uint32 rid;
318
319 if ( !(pdb = pdb_get_methods()) ) {
320 return False;
321 }
322
323 /* hard code the Guest RID of 501 */
324
325 if ( !sid_peek_check_rid( get_global_sam_sid(), sid, &rid ) )
326 return False;
327
328 if ( rid == DOMAIN_USER_RID_GUEST ) {
329 DEBUG(6,("pdb_getsampwsid: Building guest account\n"));
330 return guest_user_info( sam_acct );
331 }
332
333 /* check the cache first */
334
335 if ( csamuser && sid_equal(sid, pdb_get_user_sid(csamuser) ) )
336 return pdb_copy_sam_account(sam_acct, csamuser);
337
338 return NT_STATUS_IS_OK(pdb->getsampwsid(pdb, sam_acct, sid));
339 }
340
341 static NTSTATUS pdb_default_create_user(struct pdb_methods *methods,
342 TALLOC_CTX *tmp_ctx, const char *name,
343 uint32 acb_info, uint32 *rid)
344 {
345 struct samu *sam_pass;
346 NTSTATUS status;
347 struct passwd *pwd;
348
349 if ((sam_pass = samu_new(tmp_ctx)) == NULL) {
350 return NT_STATUS_NO_MEMORY;
351 }
352
353 if ( !(pwd = Get_Pwnam_alloc(tmp_ctx, name)) ) {
354 pstring add_script;
355 int add_ret;
356
357 if ((acb_info & ACB_NORMAL) && name[strlen(name)-1] != '$') {
358 pstrcpy(add_script, lp_adduser_script());
359 } else {
360 pstrcpy(add_script, lp_addmachine_script());
361 }
362
363 if (add_script[0] == '\0') {
364 DEBUG(3, ("Could not find user %s and no add script "
365 "defined\n", name));
366 return NT_STATUS_NO_SUCH_USER;
367 }
368
369 all_string_sub(add_script, "%u", name, sizeof(add_script));
370 add_ret = smbrun(add_script,NULL);
371 DEBUG(add_ret ? 0 : 3, ("_samr_create_user: Running the command `%s' gave %d\n",
372 add_script, add_ret));
373 flush_pwnam_cache();
374
375 pwd = Get_Pwnam_alloc(tmp_ctx, name);
376 }
377
378 /* we have a valid SID coming out of this call */
379
380 status = samu_alloc_rid_unix( sam_pass, pwd );
381
382 TALLOC_FREE( pwd );
383
384 if (!NT_STATUS_IS_OK(status)) {
385 DEBUG(3, ("pdb_default_create_user: failed to create a new user structure: %s\n", nt_errstr(status)));
386 return status;
387 }
388
389 if (!sid_peek_check_rid(get_global_sam_sid(),
390 pdb_get_user_sid(sam_pass), rid)) {
391 DEBUG(0, ("Could not get RID of fresh user\n"));
392 return NT_STATUS_INTERNAL_ERROR;
393 }
394
395 /* Disable the account on creation, it does not have a reasonable password yet. */
396
397 acb_info |= ACB_DISABLED;
398
399 pdb_set_acct_ctrl(sam_pass, acb_info, PDB_CHANGED);
400
401 status = pdb_add_sam_account(sam_pass);
402
403 TALLOC_FREE(sam_pass);
404
405 return status;
406 }
407
408 NTSTATUS pdb_create_user(TALLOC_CTX *mem_ctx, const char *name, uint32 flags,
409 uint32 *rid)
410 {
411 struct pdb_methods *pdb = pdb_get_methods();
412
413 if ( !pdb ) {
414 return NT_STATUS_UNSUCCESSFUL;
415 }
416
417 return pdb->create_user(pdb, mem_ctx, name, flags, rid);
418 }
419
420 /****************************************************************************
421 Delete a UNIX user on demand.
422 ****************************************************************************/
423
424 static int smb_delete_user(const char *unix_user)
425 {
426 pstring del_script;
427 int ret;
428
429 pstrcpy(del_script, lp_deluser_script());
430 if (! *del_script)
431 return -1;
432 all_string_sub(del_script, "%u", unix_user, sizeof(del_script));
433 ret = smbrun(del_script,NULL);
434 flush_pwnam_cache();
435 DEBUG(ret ? 0 : 3,("smb_delete_user: Running the command `%s' gave %d\n",del_script,ret));
436
437 return ret;
438 }
439
440 static NTSTATUS pdb_default_delete_user(struct pdb_methods *methods,
441 TALLOC_CTX *mem_ctx,
442 struct samu *sam_acct)
443 {
444 NTSTATUS status;
445
446 status = pdb_delete_sam_account(sam_acct);
447 if (!NT_STATUS_IS_OK(status)) {
448 return status;
449 }
450
451 /*
452 * Now delete the unix side ....
453 * note: we don't check if the delete really happened as the script is
454 * not necessary present and maybe the sysadmin doesn't want to delete
455 * the unix side
456 */
457 smb_delete_user( pdb_get_username(sam_acct) );
458
459 return status;
460 }
461
462 NTSTATUS pdb_delete_user(TALLOC_CTX *mem_ctx, struct samu *sam_acct)
463 {
464 struct pdb_methods *pdb = pdb_get_methods();
465
466 if ( !pdb ) {
467 return NT_STATUS_UNSUCCESSFUL;
468 }
469
470 return pdb->delete_user(pdb, mem_ctx, sam_acct);
471 }
472
473 NTSTATUS pdb_add_sam_account(struct samu *sam_acct)
474 {
475 struct pdb_methods *pdb = pdb_get_methods();
476
477 if ( !pdb ) {
478 return NT_STATUS_UNSUCCESSFUL;
479 }
480
481 return pdb->add_sam_account(pdb, sam_acct);
482 }
483
484 NTSTATUS pdb_update_sam_account(struct samu *sam_acct)
485 {
486 struct pdb_methods *pdb = pdb_get_methods();
487
488 if ( !pdb ) {
489 return NT_STATUS_UNSUCCESSFUL;
490 }
491
492 if (csamuser != NULL) {
493 TALLOC_FREE(csamuser);
494 csamuser = NULL;
495 }
496
497 return pdb->update_sam_account(pdb, sam_acct);
498 }
499
500 NTSTATUS pdb_delete_sam_account(struct samu *sam_acct)
501 {
502 struct pdb_methods *pdb = pdb_get_methods();
503
504 if ( !pdb ) {
505 return NT_STATUS_UNSUCCESSFUL;
506 }
507
508 if (csamuser != NULL) {
509 TALLOC_FREE(csamuser);
510 csamuser = NULL;
511 }
512
513 return pdb->delete_sam_account(pdb, sam_acct);
514 }
515
516 NTSTATUS pdb_rename_sam_account(struct samu *oldname, const char *newname)
517 {
518 struct pdb_methods *pdb = pdb_get_methods();
519
520 if ( !pdb ) {
521 return NT_STATUS_NOT_IMPLEMENTED;
522 }
523
524 if (csamuser != NULL) {
525 TALLOC_FREE(csamuser);
526 csamuser = NULL;
527 }
528
529 return pdb->rename_sam_account(pdb, oldname, newname);
530 }
531
532 NTSTATUS pdb_update_login_attempts(struct samu *sam_acct, BOOL success)
533 {
534 struct pdb_methods *pdb = pdb_get_methods();
535
536 if ( !pdb ) {
537 return NT_STATUS_NOT_IMPLEMENTED;
538 }
539
540 return pdb->update_login_attempts(pdb, sam_acct, success);
541 }
542
543 BOOL pdb_getgrsid(GROUP_MAP *map, DOM_SID sid)
544 {
545 struct pdb_methods *pdb = pdb_get_methods();
546
547 if ( !pdb ) {
548 return False;
549 }
550
551 return NT_STATUS_IS_OK(pdb->getgrsid(pdb, map, sid));
552 }
553
554 BOOL pdb_getgrgid(GROUP_MAP *map, gid_t gid)
555 {
556 struct pdb_methods *pdb = pdb_get_methods();
557
558 if ( !pdb ) {
559 return False;
560 }
561
562 return NT_STATUS_IS_OK(pdb->getgrgid(pdb, map, gid));
563 }
564
565 BOOL pdb_getgrnam(GROUP_MAP *map, const char *name)
566 {
567 struct pdb_methods *pdb = pdb_get_methods();
568
569 if ( !pdb ) {
570 return False;
571 }
572
573 return NT_STATUS_IS_OK(pdb->getgrnam(pdb, map, name));
574 }
575
576 static NTSTATUS pdb_default_create_dom_group(struct pdb_methods *methods,
577 TALLOC_CTX *mem_ctx,
578 const char *name,
579 uint32 *rid)
580 {
581 DOM_SID group_sid;
582 struct group *grp;
583
584 grp = getgrnam(name);
585
586 if (grp == NULL) {
587 gid_t gid;
588
589 if (smb_create_group(name, &gid) != 0) {
590 return NT_STATUS_ACCESS_DENIED;
591 }
592
593 grp = getgrgid(gid);
594 }
595
596 if (grp == NULL) {
597 return NT_STATUS_ACCESS_DENIED;
598 }
599
600 if (pdb_rid_algorithm()) {
601 *rid = pdb_gid_to_group_rid( grp->gr_gid );
602 } else {
603 if (!pdb_new_rid(rid)) {
604 return NT_STATUS_ACCESS_DENIED;
605 }
606 }
607
608 sid_compose(&group_sid, get_global_sam_sid(), *rid);
609
610 return add_initial_entry(grp->gr_gid, sid_string_static(&group_sid),
611 SID_NAME_DOM_GRP, name, NULL);
612 }
613
614 NTSTATUS pdb_create_dom_group(TALLOC_CTX *mem_ctx, const char *name,
615 uint32 *rid)
616 {
617 struct pdb_methods *pdb = pdb_get_methods();
618
619 if ( !pdb ) {
620 return NT_STATUS_UNSUCCESSFUL;
621 }
622
623 return pdb->create_dom_group(pdb, mem_ctx, name, rid);
624 }
625
626 static NTSTATUS pdb_default_delete_dom_group(struct pdb_methods *methods,
627 TALLOC_CTX *mem_ctx,
628 uint32 rid)
629 {
630 DOM_SID group_sid;
631 GROUP_MAP map;
632 NTSTATUS status;
633 struct group *grp;
634 const char *grp_name;
635
636 sid_compose(&group_sid, get_global_sam_sid(), rid);
637
638 if (!get_domain_group_from_sid(group_sid, &map)) {
639 DEBUG(10, ("Could not find group for rid %d\n", rid));
640 return NT_STATUS_NO_SUCH_GROUP;
641 }
642
643 /* We need the group name for the smb_delete_group later on */
644
645 if (map.gid == (gid_t)-1) {
646 return NT_STATUS_NO_SUCH_GROUP;
647 }
648
649 grp = getgrgid(map.gid);
650 if (grp == NULL) {
651 return NT_STATUS_NO_SUCH_GROUP;
652 }
653
654 /* Copy the name, no idea what pdb_delete_group_mapping_entry does.. */
655
656 grp_name = talloc_strdup(mem_ctx, grp->gr_name);
657 if (grp_name == NULL) {
658 return NT_STATUS_NO_MEMORY;
659 }
660
661 status = pdb_delete_group_mapping_entry(group_sid);
662
663 if (!NT_STATUS_IS_OK(status)) {
664 return status;
665 }
666
667 /* Don't check the result of smb_delete_group */
668
669 smb_delete_group(grp_name);
670
671 return NT_STATUS_OK;
672 }
673
674 NTSTATUS pdb_delete_dom_group(TALLOC_CTX *mem_ctx, uint32 rid)
675 {
676 struct pdb_methods *pdb = pdb_get_methods();
677
678 if ( !pdb ) {
679 return NT_STATUS_UNSUCCESSFUL;
680 }
681
682 return pdb->delete_dom_group(pdb, mem_ctx, rid);
683 }
684
685 NTSTATUS pdb_add_group_mapping_entry(GROUP_MAP *map)
686 {
687 struct pdb_methods *pdb = pdb_get_methods();
688
689 if ( !pdb ) {
690 return NT_STATUS_UNSUCCESSFUL;
691 }
692
693 return pdb->add_group_mapping_entry(pdb, map);
694 }
695
696 NTSTATUS pdb_update_group_mapping_entry(GROUP_MAP *map)
697 {
698 struct pdb_methods *pdb = pdb_get_methods();
699
700 if ( !pdb ) {
701 return NT_STATUS_UNSUCCESSFUL;
702 }
703
704 return pdb->update_group_mapping_entry(pdb, map);
705 }
706
707 NTSTATUS pdb_delete_group_mapping_entry(DOM_SID sid)
708 {
709 struct pdb_methods *pdb = pdb_get_methods();
710
711 if ( !pdb ) {
712 return NT_STATUS_UNSUCCESSFUL;
713 }
714
715 return pdb->delete_group_mapping_entry(pdb, sid);
716 }
717
718 BOOL pdb_enum_group_mapping(const DOM_SID *sid, enum SID_NAME_USE sid_name_use, GROUP_MAP **pp_rmap,
719 size_t *p_num_entries, BOOL unix_only)
720 {
721 struct pdb_methods *pdb = pdb_get_methods();
722
723 if ( !pdb ) {
724 return False;
725 }
726
727 return NT_STATUS_IS_OK(pdb-> enum_group_mapping(pdb, sid, sid_name_use,
728 pp_rmap, p_num_entries, unix_only));
729 }
730
731 NTSTATUS pdb_enum_group_members(TALLOC_CTX *mem_ctx,
732 const DOM_SID *sid,
733 uint32 **pp_member_rids,
734 size_t *p_num_members)
735 {
736 struct pdb_methods *pdb = pdb_get_methods();
737 NTSTATUS result;
738
739 if ( !pdb ) {
740 return NT_STATUS_UNSUCCESSFUL;
741 }
742
743 result = pdb->enum_group_members(pdb, mem_ctx,
744 sid, pp_member_rids, p_num_members);
745
746 /* special check for rid 513 */
747
748 if ( !NT_STATUS_IS_OK( result ) ) {
749 uint32 rid;
750
751 sid_peek_rid( sid, &rid );
752
753 if ( rid == DOMAIN_GROUP_RID_USERS ) {
754 *p_num_members = 0;
755 *pp_member_rids = NULL;
756
757 return NT_STATUS_OK;
758 }
759 }
760
761 return result;
762 }
763
764 NTSTATUS pdb_enum_group_memberships(TALLOC_CTX *mem_ctx, struct samu *user,
765 DOM_SID **pp_sids, gid_t **pp_gids,
766 size_t *p_num_groups)
767 {
768 struct pdb_methods *pdb = pdb_get_methods();
769
770 if ( !pdb ) {
771 return NT_STATUS_UNSUCCESSFUL;
772 }
773
774 return pdb->enum_group_memberships(
775 pdb, mem_ctx, user,
776 pp_sids, pp_gids, p_num_groups);
777 }
778
779 static NTSTATUS pdb_default_set_unix_primary_group(struct pdb_methods *methods,
780 TALLOC_CTX *mem_ctx,
781 struct samu *sampass)
782 {
783 struct group *grp;
784 gid_t gid;
785
786 if (!sid_to_gid(pdb_get_group_sid(sampass), &gid) ||
787 (grp = getgrgid(gid)) == NULL) {
788 return NT_STATUS_INVALID_PRIMARY_GROUP;
789 }
790
791 if (smb_set_primary_group(grp->gr_name,
792 pdb_get_username(sampass)) != 0) {
793 return NT_STATUS_ACCESS_DENIED;
794 }
795
796 return NT_STATUS_OK;
797 }
798
799 NTSTATUS pdb_set_unix_primary_group(TALLOC_CTX *mem_ctx, struct samu *user)
800 {
801 struct pdb_methods *pdb = pdb_get_methods();
802
803 if ( !pdb ) {
804 return NT_STATUS_UNSUCCESSFUL;
805 }
806
807 return pdb->set_unix_primary_group(pdb, mem_ctx, user);
808 }
809
810 /*
811 * Helper function to see whether a user is in a group. We can't use
812 * user_in_group_sid here because this creates dependencies only smbd can
813 * fulfil.
814 */
815
816 static BOOL pdb_user_in_group(TALLOC_CTX *mem_ctx, struct samu *account,
817 const DOM_SID *group_sid)
818 {
819 DOM_SID *sids;
820 gid_t *gids;
821 size_t i, num_groups;
822
823 if (!NT_STATUS_IS_OK(pdb_enum_group_memberships(mem_ctx, account,
824 &sids, &gids,
825 &num_groups))) {
826 return False;
827 }
828
829 for (i=0; i<num_groups; i++) {
830 if (sid_equal(group_sid, &sids[i])) {
831 return True;
832 }
833 }
834 return False;
835 }
836
837 static NTSTATUS pdb_default_add_groupmem(struct pdb_methods *methods,
838 TALLOC_CTX *mem_ctx,
839 uint32 group_rid,
840 uint32 member_rid)
841 {
842 DOM_SID group_sid, member_sid;
843 struct samu *account = NULL;
844 GROUP_MAP map;
845 struct group *grp;
846 struct passwd *pwd;
847 const char *group_name;
848 uid_t uid;
849
850 sid_compose(&group_sid, get_global_sam_sid(), group_rid);
851 sid_compose(&member_sid, get_global_sam_sid(), member_rid);
852
853 if (!get_domain_group_from_sid(group_sid, &map) ||
854 (map.gid == (gid_t)-1) ||
855 ((grp = getgrgid(map.gid)) == NULL)) {
856 return NT_STATUS_NO_SUCH_GROUP;
857 }
858
859 group_name = talloc_strdup(mem_ctx, grp->gr_name);
860 if (group_name == NULL) {
861 return NT_STATUS_NO_MEMORY;
862 }
863
864 if ( !(account = samu_new( NULL )) ) {
865 return NT_STATUS_NO_MEMORY;
866 }
867
868 if (!pdb_getsampwsid(account, &member_sid) ||
869 !sid_to_uid(&member_sid, &uid) ||
870 ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
871 return NT_STATUS_NO_SUCH_USER;
872 }
873
874 if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
875 return NT_STATUS_MEMBER_IN_GROUP;
876 }
877
878 /*
879 * ok, the group exist, the user exist, the user is not in the group,
880 * we can (finally) add it to the group !
881 */
882
883 smb_add_user_group(group_name, pwd->pw_name);
884
885 if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
886 return NT_STATUS_ACCESS_DENIED;
887 }
888
889 return NT_STATUS_OK;
890 }
891
892 NTSTATUS pdb_add_groupmem(TALLOC_CTX *mem_ctx, uint32 group_rid,
893 uint32 member_rid)
894 {
895 struct pdb_methods *pdb = pdb_get_methods();
896
897 if ( !pdb ) {
898 return NT_STATUS_UNSUCCESSFUL;
899 }
900
901 return pdb->add_groupmem(pdb, mem_ctx, group_rid, member_rid);
902 }
903
904 static NTSTATUS pdb_default_del_groupmem(struct pdb_methods *methods,
905 TALLOC_CTX *mem_ctx,
906 uint32 group_rid,
907 uint32 member_rid)
908 {
909 DOM_SID group_sid, member_sid;
910 struct samu *account = NULL;
911 GROUP_MAP map;
912 struct group *grp;
913 struct passwd *pwd;
914 const char *group_name;
915 uid_t uid;
916
917 sid_compose(&group_sid, get_global_sam_sid(), group_rid);
918 sid_compose(&member_sid, get_global_sam_sid(), member_rid);
919
920 if (!get_domain_group_from_sid(group_sid, &map) ||
921 (map.gid == (gid_t)-1) ||
922 ((grp = getgrgid(map.gid)) == NULL)) {
923 return NT_STATUS_NO_SUCH_GROUP;
924 }
925
926 group_name = talloc_strdup(mem_ctx, grp->gr_name);
927 if (group_name == NULL) {
928 return NT_STATUS_NO_MEMORY;
929 }
930
931 if ( !(account = samu_new( NULL )) ) {
932 return NT_STATUS_NO_MEMORY;
933 }
934
935 if (!pdb_getsampwsid(account, &member_sid) ||
936 !sid_to_uid(&member_sid, &uid) ||
937 ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
938 return NT_STATUS_NO_SUCH_USER;
939 }
940
941 if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
942 return NT_STATUS_MEMBER_NOT_IN_GROUP;
943 }
944
945 /*
946 * ok, the group exist, the user exist, the user is in the group,
947 * we can (finally) delete it from the group!
948 */
949
950 smb_delete_user_group(group_name, pwd->pw_name);
951
952 if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
953 return NT_STATUS_ACCESS_DENIED;
954 }
955
956 return NT_STATUS_OK;
957 }
958
959 NTSTATUS pdb_del_groupmem(TALLOC_CTX *mem_ctx, uint32 group_rid,
960 uint32 member_rid)
961 {
962 struct pdb_methods *pdb = pdb_get_methods();
963
964 if ( !pdb ) {
965 return NT_STATUS_UNSUCCESSFUL;
966 }
967
968 return pdb->del_groupmem(pdb, mem_ctx, group_rid, member_rid);
969 }
970
971 BOOL pdb_find_alias(const char *name, DOM_SID *sid)
972 {
973 struct pdb_methods *pdb = pdb_get_methods();
974
975 if ( !pdb ) {
976 return False;
977 }
978
979 return NT_STATUS_IS_OK(pdb->find_alias(pdb,
980 name, sid));
981 }
982
983 NTSTATUS pdb_create_alias(const char *name, uint32 *rid)
984 {
985 struct pdb_methods *pdb = pdb_get_methods();
986
987 if ( !pdb ) {
988 return NT_STATUS_NOT_IMPLEMENTED;
989 }
990
991 return pdb->create_alias(pdb, name, rid);
992 }
993
994 BOOL pdb_delete_alias(const DOM_SID *sid)
995 {
996 struct pdb_methods *pdb = pdb_get_methods();
997
998 if ( !pdb ) {
999 return False;
1000 }
1001
1002 return NT_STATUS_IS_OK(pdb->delete_alias(pdb,
1003 sid));
1004
1005 }
1006
1007 BOOL pdb_get_aliasinfo(const DOM_SID *sid, struct acct_info *info)
1008 {
1009 struct pdb_methods *pdb = pdb_get_methods();
1010
1011 if ( !pdb ) {
1012 return False;
1013 }
1014
1015 return NT_STATUS_IS_OK(pdb->get_aliasinfo(pdb, sid,
1016 info));
1017 }
1018
1019 BOOL pdb_set_aliasinfo(const DOM_SID *sid, struct acct_info *info)
1020 {
1021 struct pdb_methods *pdb = pdb_get_methods();
1022
1023 if ( !pdb ) {
1024 return False;
1025 }
1026
1027 return NT_STATUS_IS_OK(pdb->set_aliasinfo(pdb, sid,
1028 info));
1029 }
1030
1031 NTSTATUS pdb_add_aliasmem(const DOM_SID *alias, const DOM_SID *member)
1032 {
1033 struct pdb_methods *pdb = pdb_get_methods();
1034
1035 if ( !pdb ) {
1036 return NT_STATUS_UNSUCCESSFUL;
1037 }
1038
1039 return pdb->add_aliasmem(pdb, alias, member);
1040 }
1041
1042 NTSTATUS pdb_del_aliasmem(const DOM_SID *alias, const DOM_SID *member)
1043 {
1044 struct pdb_methods *pdb = pdb_get_methods();
1045
1046 if ( !pdb ) {
1047 return NT_STATUS_UNSUCCESSFUL;
1048 }
1049
1050 return pdb->del_aliasmem(pdb, alias, member);
1051 }
1052
1053 NTSTATUS pdb_enum_aliasmem(const DOM_SID *alias,
1054 DOM_SID **pp_members, size_t *p_num_members)
1055 {
1056 struct pdb_methods *pdb = pdb_get_methods();
1057
1058 if ( !pdb ) {
1059 return NT_STATUS_UNSUCCESSFUL;
1060 }
1061
1062 return pdb->enum_aliasmem(pdb, alias,
1063 pp_members, p_num_members);
1064 }
1065
1066 NTSTATUS pdb_enum_alias_memberships(TALLOC_CTX *mem_ctx,
1067 const DOM_SID *domain_sid,
1068 const DOM_SID *members, size_t num_members,
1069 uint32 **pp_alias_rids,
1070 size_t *p_num_alias_rids)
1071 {
1072 struct pdb_methods *pdb = pdb_get_methods();
1073
1074 if ( !pdb ) {
1075 return NT_STATUS_NOT_IMPLEMENTED;
1076 }
1077
1078 return pdb->enum_alias_memberships(pdb, mem_ctx,
1079 domain_sid,
1080 members, num_members,
1081 pp_alias_rids,
1082 p_num_alias_rids);
1083 }
1084
1085 NTSTATUS pdb_lookup_rids(const DOM_SID *domain_sid,
1086 int num_rids,
1087 uint32 *rids,
1088 const char **names,
1089 uint32 *attrs)
1090 {
1091 struct pdb_methods *pdb = pdb_get_methods();
1092
1093 if ( !pdb ) {
1094 return NT_STATUS_NOT_IMPLEMENTED;
1095 }
1096
1097 return pdb->lookup_rids(pdb, domain_sid,
1098 num_rids, rids, names, attrs);
1099 }
1100
1101 NTSTATUS pdb_lookup_names(const DOM_SID *domain_sid,
1102 int num_names,
1103 const char **names,
1104 uint32 *rids,
1105 uint32 *attrs)
1106 {
1107 struct pdb_methods *pdb = pdb_get_methods();
1108
1109 if ( !pdb ) {
1110 return NT_STATUS_NOT_IMPLEMENTED;
1111 }
1112
1113 return pdb->lookup_names(pdb, domain_sid,
1114 num_names, names, rids, attrs);
1115 }
1116
1117 BOOL pdb_get_account_policy(int policy_index, uint32 *value)
1118 {
1119 struct pdb_methods *pdb = pdb_get_methods();
1120
1121 if ( !pdb ) {
1122 return False;
1123 }
1124
1125 return NT_STATUS_IS_OK(pdb->get_account_policy(pdb, policy_index, value));
1126 }
1127
1128 BOOL pdb_set_account_policy(int policy_index, uint32 value)
1129 {
1130 struct pdb_methods *pdb = pdb_get_methods();
1131
1132 if ( !pdb ) {
1133 return False;
1134 }
1135
1136 return NT_STATUS_IS_OK(pdb->set_account_policy(pdb, policy_index, value));
1137 }
1138
1139 BOOL pdb_get_seq_num(time_t *seq_num)
1140 {
1141 struct pdb_methods *pdb = pdb_get_methods();
1142
1143 if ( !pdb ) {
1144 return False;
1145 }
1146
1147 return NT_STATUS_IS_OK(pdb->get_seq_num(pdb, seq_num));
1148 }
1149
1150 BOOL pdb_uid_to_rid(uid_t uid, uint32 *rid)
1151 {
1152 struct pdb_methods *pdb = pdb_get_methods();
1153
1154 if ( !pdb ) {
1155 return False;
1156 }
1157
1158 return pdb->uid_to_rid(pdb, uid, rid);
1159 }
1160
1161 BOOL pdb_gid_to_sid(gid_t gid, DOM_SID *sid)
1162 {
1163 struct pdb_methods *pdb = pdb_get_methods();
1164
1165 if ( !pdb ) {
1166 return False;
1167 }
1168
1169 return pdb->gid_to_sid(pdb, gid, sid);
1170 }
1171
1172 BOOL pdb_sid_to_id(const DOM_SID *sid, union unid_t *id,
1173 enum SID_NAME_USE *type)
1174 {
1175 struct pdb_methods *pdb = pdb_get_methods();
1176
1177 if ( !pdb ) {
1178 return False;
1179 }
1180
1181 return pdb->sid_to_id(pdb, sid, id, type);
1182 }
1183
1184 BOOL pdb_rid_algorithm(void)
1185 {
1186 struct pdb_methods *pdb = pdb_get_methods();
1187
1188 if ( !pdb ) {
1189 return False;
1190 }
1191
1192 return pdb->rid_algorithm(pdb);
1193 }
1194
1195 BOOL pdb_new_rid(uint32 *rid)
1196 {
1197 struct pdb_methods *pdb = pdb_get_methods();
1198
1199 if ( !pdb ) {
1200 return False;
1201 }
1202
1203 if (pdb_rid_algorithm()) {
1204 DEBUG(0, ("Trying to allocate a RID when algorithmic RIDs "
1205 "are active\n"));
1206 return False;
1207 }
1208
1209 if (algorithmic_rid_base() != BASE_RID) {
1210 DEBUG(0, ("'algorithmic rid base' is set but a passdb backend "
1211 "without algorithmic RIDs is chosen.\n"));
1212 DEBUGADD(0, ("Please map all used groups using 'net groupmap "
1213 "add', set the maximum used RID using\n"));
1214 DEBUGADD(0, ("'net setmaxrid' and remove the parameter\n"));
1215 return False;
1216 }
1217
1218 return pdb->new_rid(pdb, rid);
1219 }
1220
1221 /***************************************************************
1222 Initialize the static context (at smbd startup etc).
1223
1224 If uninitialised, context will auto-init on first use.
1225 ***************************************************************/
1226
1227 BOOL initialize_password_db(BOOL reload)
1228 {
1229 return (pdb_get_methods_reload(reload) != NULL);
1230 }
1231
1232
1233 /***************************************************************************
1234 Default implementations of some functions.
1235 ****************************************************************************/
1236
1237 static NTSTATUS pdb_default_getsampwnam (struct pdb_methods *methods, struct samu *user, const char *sname)
1238 {
1239 return NT_STATUS_NO_SUCH_USER;
1240 }
1241
1242 static NTSTATUS pdb_default_getsampwsid(struct pdb_methods *my_methods, struct samu * user, const DOM_SID *sid)
1243 {
1244 return NT_STATUS_NO_SUCH_USER;
1245 }
1246
1247 static NTSTATUS pdb_default_add_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1248 {
1249 DEBUG(0,("this backend (%s) should not be listed as the first passdb backend! You can't add users to it.\n", methods->name));
1250 return NT_STATUS_NOT_IMPLEMENTED;
1251 }
1252
1253 static NTSTATUS pdb_default_update_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1254 {
1255 return NT_STATUS_NOT_IMPLEMENTED;
1256 }
1257
1258 static NTSTATUS pdb_default_delete_sam_account (struct pdb_methods *methods, struct samu *pwd)
1259 {
1260 return NT_STATUS_NOT_IMPLEMENTED;
1261 }
1262
1263 static NTSTATUS pdb_default_rename_sam_account (struct pdb_methods *methods, struct samu *pwd, const char *newname)
1264 {
1265 return NT_STATUS_NOT_IMPLEMENTED;
1266 }
1267
1268 static NTSTATUS pdb_default_update_login_attempts (struct pdb_methods *methods, struct samu *newpwd, BOOL success)
1269 {
1270 return NT_STATUS_OK;
1271 }
1272
1273 static NTSTATUS pdb_default_setsampwent(struct pdb_methods *methods, BOOL update, uint32 acb_mask)
1274 {
1275 return NT_STATUS_NOT_IMPLEMENTED;
1276 }
1277
1278 static NTSTATUS pdb_default_getsampwent(struct pdb_methods *methods, struct samu *user)
1279 {
1280 return NT_STATUS_NOT_IMPLEMENTED;
1281 }
1282
1283 static void pdb_default_endsampwent(struct pdb_methods *methods)
1284 {
1285 return; /* NT_STATUS_NOT_IMPLEMENTED; */
1286 }
1287
1288 static NTSTATUS pdb_default_get_account_policy(struct pdb_methods *methods, int policy_index, uint32 *value)
1289 {
1290 return account_policy_get(policy_index, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1291 }
1292
1293 static NTSTATUS pdb_default_set_account_policy(struct pdb_methods *methods, int policy_index, uint32 value)
1294 {
1295 return account_policy_set(policy_index, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1296 }
1297
1298 static NTSTATUS pdb_default_get_seq_num(struct pdb_methods *methods, time_t *seq_num)
1299 {
1300 *seq_num = time(NULL);
1301 return NT_STATUS_OK;
1302 }
1303
1304 static BOOL pdb_default_uid_to_rid(struct pdb_methods *methods, uid_t uid,
1305 uint32 *rid)
1306 {
1307 struct samu *sampw = NULL;
1308 struct passwd *unix_pw;
1309 BOOL ret;
1310
1311 unix_pw = sys_getpwuid( uid );
1312
1313 if ( !unix_pw ) {
1314 DEBUG(4,("pdb_default_uid_to_rid: host has no idea of uid "
1315 "%lu\n", (unsigned long)uid));
1316 return False;
1317 }
1318
1319 if ( !(sampw = samu_new( NULL )) ) {
1320 DEBUG(0,("pdb_default_uid_to_rid: samu_new() failed!\n"));
1321 return False;
1322 }
1323
1324 become_root();
1325 ret = NT_STATUS_IS_OK(
1326 methods->getsampwnam(methods, sampw, unix_pw->pw_name ));
1327 unbecome_root();
1328
1329 if (!ret) {
1330 DEBUG(5, ("pdb_default_uid_to_rid: Did not find user "
1331 "%s (%d)\n", unix_pw->pw_name, uid));
1332 TALLOC_FREE(sampw);
1333 return False;
1334 }
1335
1336 ret = sid_peek_check_rid(get_global_sam_sid(),
1337 pdb_get_user_sid(sampw), rid);
1338
1339 if (!ret) {
1340 DEBUG(1, ("Could not peek rid out of sid %s\n",
1341 sid_string_static(pdb_get_user_sid(sampw))));
1342 }
1343
1344 TALLOC_FREE(sampw);
1345 return ret;
1346 }
1347
1348 static BOOL pdb_default_gid_to_sid(struct pdb_methods *methods, gid_t gid,
1349 DOM_SID *sid)
1350 {
1351 GROUP_MAP map;
1352
1353 if (!NT_STATUS_IS_OK(methods->getgrgid(methods, &map, gid))) {
1354 return False;
1355 }
1356
1357 sid_copy(sid, &map.sid);
1358 return True;
1359 }
1360
1361 static BOOL pdb_default_sid_to_id(struct pdb_methods *methods,
1362 const DOM_SID *sid,
1363 union unid_t *id, enum SID_NAME_USE *type)
1364 {
1365 TALLOC_CTX *mem_ctx;
1366 BOOL ret = False;
1367 const char *name;
1368 uint32 rid;
1369
1370 mem_ctx = talloc_new(NULL);
1371
1372 if (mem_ctx == NULL) {
1373 DEBUG(0, ("talloc_new failed\n"));
1374 return False;
1375 }
1376
1377 if (sid_peek_check_rid(get_global_sam_sid(), sid, &rid)) {
1378 /* Here we might have users as well as groups and aliases */
1379 ret = lookup_global_sam_rid(mem_ctx, rid, &name, type, id);
1380 goto done;
1381 }
1382
1383 if (sid_peek_check_rid(&global_sid_Builtin, sid, &rid)) {
1384 /* Here we only have aliases */
1385 GROUP_MAP map;
1386 if (!NT_STATUS_IS_OK(methods->getgrsid(methods, &map, *sid))) {
1387 DEBUG(10, ("Could not find map for sid %s\n",
1388 sid_string_static(sid)));
1389 goto done;
1390 }
1391 if ((map.sid_name_use != SID_NAME_ALIAS) &&
1392 (map.sid_name_use != SID_NAME_WKN_GRP)) {
1393 DEBUG(10, ("Map for sid %s is a %s, expected an "
1394 "alias\n", sid_string_static(sid),
1395 sid_type_lookup(map.sid_name_use)));
1396 goto done;
1397 }
1398
1399 id->gid = map.gid;
1400 *type = SID_NAME_ALIAS;
1401 ret = True;
1402 goto done;
1403 }
1404
1405 DEBUG(5, ("Sid %s is neither ours nor builtin, don't know it\n",
1406 sid_string_static(sid)));
1407
1408 done:
1409
1410 TALLOC_FREE(mem_ctx);
1411 return ret;
1412 }
1413
1414 static void add_uid_to_array_unique(TALLOC_CTX *mem_ctx,
1415 uid_t uid, uid_t **pp_uids, size_t *p_num)
1416 {
1417 size_t i;
1418
1419 for (i=0; i<*p_num; i++) {
1420 if ((*pp_uids)[i] == uid)
1421 return;
1422 }
1423
1424 *pp_uids = TALLOC_REALLOC_ARRAY(mem_ctx, *pp_uids, uid_t, *p_num+1);
1425
1426 if (*pp_uids == NULL)
1427 return;
1428
1429 (*pp_uids)[*p_num] = uid;
1430 *p_num += 1;
1431 }
1432
1433 static BOOL get_memberuids(TALLOC_CTX *mem_ctx, gid_t gid, uid_t **pp_uids, size_t *p_num)
1434 {
1435 struct group *grp;
1436 char **gr;
1437 struct passwd *pwd;
1438
1439 *pp_uids = NULL;
1440 *p_num = 0;
1441
1442 /* We only look at our own sam, so don't care about imported stuff */
1443
1444 winbind_off();
1445
1446 if ((grp = getgrgid(gid)) == NULL) {
1447 winbind_on();
1448 return False;
1449 }
1450
1451 /* Primary group members */
1452
1453 setpwent();
1454 while ((pwd = getpwent()) != NULL) {
1455 if (pwd->pw_gid == gid) {
1456 add_uid_to_array_unique(mem_ctx, pwd->pw_uid,
1457 pp_uids, p_num);
1458 }
1459 }
1460 endpwent();
1461
1462 /* Secondary group members */
1463
1464 for (gr = grp->gr_mem; (*gr != NULL) && ((*gr)[0] != '\0'); gr += 1) {
1465 struct passwd *pw = getpwnam(*gr);
1466
1467 if (pw == NULL)
1468 continue;
1469 add_uid_to_array_unique(mem_ctx, pw->pw_uid, pp_uids, p_num);
1470 }
1471
1472 winbind_on();
1473
1474 return True;
1475 }
1476
1477 NTSTATUS pdb_default_enum_group_members(struct pdb_methods *methods,
1478 TALLOC_CTX *mem_ctx,
1479 const DOM_SID *group,
1480 uint32 **pp_member_rids,
1481 size_t *p_num_members)
1482 {
1483 gid_t gid;
1484 uid_t *uids;
1485 size_t i, num_uids;
1486
1487 *pp_member_rids = NULL;
1488 *p_num_members = 0;
1489
1490 if (!sid_to_gid(group, &gid))
1491 return NT_STATUS_NO_SUCH_GROUP;
1492
1493 if(!get_memberuids(mem_ctx, gid, &uids, &num_uids))
1494 return NT_STATUS_NO_SUCH_GROUP;
1495
1496 if (num_uids == 0)
1497 return NT_STATUS_OK;
1498
1499 *pp_member_rids = TALLOC_ZERO_ARRAY(mem_ctx, uint32, num_uids);
1500
1501 for (i=0; i<num_uids; i++) {
1502 DOM_SID sid;
1503
1504 uid_to_sid(&sid, uids[i]);
1505
1506 if (!sid_check_is_in_our_domain(&sid)) {
1507 DEBUG(5, ("Inconsistent SAM -- group member uid not "
1508 "in our domain\n"));
1509 continue;
1510 }
1511
1512 sid_peek_rid(&sid, &(*pp_member_rids)[*p_num_members]);
1513 *p_num_members += 1;
1514 }
1515
1516 return NT_STATUS_OK;
1517 }
1518
1519 NTSTATUS pdb_default_enum_group_memberships(struct pdb_methods *methods,
1520 TALLOC_CTX *mem_ctx,
1521 struct samu *user,
1522 DOM_SID **pp_sids,
1523 gid_t **pp_gids,
1524 size_t *p_num_groups)
1525 {
1526 size_t i;
1527 gid_t gid;
1528 struct passwd *pw;
1529 const char *username = pdb_get_username(user);
1530
1531
1532 #if 0
1533 /* Ignore the primary group SID. Honor the real Unix primary group.
1534 The primary group SID is only of real use to Windows clients */
1535
1536 if (!sid_to_gid(pdb_get_group_sid(user), &gid)) {
1537 DEBUG(10, ("sid_to_gid failed\n"));
1538 return NT_STATUS_NO_SUCH_USER;
1539 }
1540 #else
1541 if ( !(pw = getpwnam_alloc(mem_ctx, username)) ) {
1542 return NT_STATUS_NO_SUCH_USER;
1543 }
1544
1545 gid = pw->pw_gid;
1546
1547 TALLOC_FREE( pw );
1548 #endif
1549
1550 if (!getgroups_unix_user(mem_ctx, username, gid, pp_gids, p_num_groups)) {
1551 return NT_STATUS_NO_SUCH_USER;
1552 }
1553
1554 if (*p_num_groups == 0) {
1555 smb_panic("primary group missing");
1556 }
1557
1558 *pp_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, *p_num_groups);
1559
1560 if (*pp_sids == NULL) {
1561 TALLOC_FREE(*pp_gids);
1562 return NT_STATUS_NO_MEMORY;
1563 }
1564
1565 for (i=0; i<*p_num_groups; i++) {
1566 gid_to_sid(&(*pp_sids)[i], (*pp_gids)[i]);
1567 }
1568
1569 return NT_STATUS_OK;
1570 }
1571
1572 /*******************************************************************
1573 Look up a rid in the SAM we're responsible for (i.e. passdb)
1574 ********************************************************************/
1575
1576 static BOOL lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
1577 const char **name,
1578 enum SID_NAME_USE *psid_name_use,
1579 union unid_t *unix_id)
1580 {
1581 struct samu *sam_account = NULL;
1582 GROUP_MAP map;
1583 BOOL ret;
1584 DOM_SID sid;
1585
1586 *psid_name_use = SID_NAME_UNKNOWN;
1587
1588 DEBUG(5,("lookup_global_sam_rid: looking up RID %u.\n",
1589 (unsigned int)rid));
1590
1591 sid_copy(&sid, get_global_sam_sid());
1592 sid_append_rid(&sid, rid);
1593
1594 /* see if the passdb can help us with the name of the user */
1595
1596 if ( !(sam_account = samu_new( NULL )) ) {
1597 return False;
1598 }
1599
1600 /* BEING ROOT BLLOCK */
1601 become_root();
1602 if (pdb_getsampwsid(sam_account, &sid)) {
1603 struct passwd *pw;
1604
1605 unbecome_root(); /* -----> EXIT BECOME_ROOT() */
1606 *name = talloc_strdup(mem_ctx, pdb_get_username(sam_account));
1607 *psid_name_use = SID_NAME_USER;
1608
1609 TALLOC_FREE(sam_account);
1610
1611 if (unix_id == NULL) {
1612 return True;
1613 }
1614
1615 pw = Get_Pwnam(*name);
1616 if (pw == NULL) {
1617 return False;
1618 }
1619 unix_id->uid = pw->pw_uid;
1620 return True;
1621 }
1622 TALLOC_FREE(sam_account);
1623
1624 ret = pdb_getgrsid(&map, sid);
1625 unbecome_root();
1626 /* END BECOME_ROOT BLOCK */
1627
1628 /* do not resolve SIDs to a name unless there is a valid
1629 gid associated with it */
1630
1631 if ( ret && (map.gid != (gid_t)-1) ) {
1632 *name = talloc_strdup(mem_ctx, map.nt_name);
1633 *psid_name_use = map.sid_name_use;
1634
1635 if ( unix_id ) {
1636 unix_id->gid = map.gid;
1637 }
1638
1639 return True;
1640 }
1641
1642 /* Windows will always map RID 513 to something. On a non-domain
1643 controller, this gets mapped to SERVER\None. */
1644
1645 if ( unix_id ) {
1646 DEBUG(5, ("Can't find a unix id for an unmapped group\n"));
1647 return False;
1648 }
1649
1650 if ( rid == DOMAIN_GROUP_RID_USERS ) {
1651 *name = talloc_strdup(mem_ctx, "None" );
1652 *psid_name_use = SID_NAME_DOM_GRP;
1653
1654 return True;
1655 }
1656
1657 return False;
1658 }
1659
1660 NTSTATUS pdb_default_lookup_rids(struct pdb_methods *methods,
1661 const DOM_SID *domain_sid,
1662 int num_rids,
1663 uint32 *rids,
1664 const char **names,
1665 uint32 *attrs)
1666 {
1667 int i;
1668 NTSTATUS result;
1669 BOOL have_mapped = False;
1670 BOOL have_unmapped = False;
1671
1672 if (sid_check_is_builtin(domain_sid)) {
1673
1674 for (i=0; i<num_rids; i++) {
1675 const char *name;
1676
1677 if (lookup_builtin_rid(names, rids[i], &name)) {
1678 attrs[i] = SID_NAME_ALIAS;
1679 names[i] = name;
1680 DEBUG(5,("lookup_rids: %s:%d\n",
1681 names[i], attrs[i]));
1682 have_mapped = True;
1683 } else {
1684 have_unmapped = True;
1685 attrs[i] = SID_NAME_UNKNOWN;
1686 }
1687 }
1688 goto done;
1689 }
1690
1691 /* Should not happen, but better check once too many */
1692 if (!sid_check_is_domain(domain_sid)) {
1693 return NT_STATUS_INVALID_HANDLE;
1694 }
1695
1696 for (i = 0; i < num_rids; i++) {
1697 const char *name;
1698
1699 if (lookup_global_sam_rid(names, rids[i], &name, &attrs[i],
1700 NULL)) {
1701 names[i] = name;
1702 DEBUG(5,("lookup_rids: %s:%d\n", names[i], attrs[i]));
1703 have_mapped = True;
1704 } else {
1705 have_unmapped = True;
1706 attrs[i] = SID_NAME_UNKNOWN;
1707 }
1708 }
1709
1710 done:
1711
1712 result = NT_STATUS_NONE_MAPPED;
1713
1714 if (have_mapped)
1715 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1716
1717 return result;
1718 }
1719
1720 NTSTATUS pdb_default_lookup_names(struct pdb_methods *methods,
1721 const DOM_SID *domain_sid,
1722 int num_names,
1723 const char **names,
1724 uint32 *rids,
1725 uint32 *attrs)
1726 {
1727 int i;
1728 NTSTATUS result;
1729 BOOL have_mapped = False;
1730 BOOL have_unmapped = False;
1731
1732 if (sid_check_is_builtin(domain_sid)) {
1733
1734 for (i=0; i<num_names; i++) {
1735 uint32 rid;
1736
1737 if (lookup_builtin_name(names[i], &rid)) {
1738 attrs[i] = SID_NAME_ALIAS;
1739 rids[i] = rid;
1740 DEBUG(5,("lookup_rids: %s:%d\n",
1741 names[i], attrs[i]));
1742 have_mapped = True;
1743 } else {
1744 have_unmapped = True;
1745 attrs[i] = SID_NAME_UNKNOWN;
1746 }
1747 }
1748 goto done;
1749 }
1750
1751 /* Should not happen, but better check once too many */
1752 if (!sid_check_is_domain(domain_sid)) {
1753 return NT_STATUS_INVALID_HANDLE;
1754 }
1755
1756 for (i = 0; i < num_names; i++) {
1757 if (lookup_global_sam_name(names[i], 0, &rids[i], &attrs[i])) {
1758 DEBUG(5,("lookup_names: %s-> %d:%d\n", names[i],
1759 rids[i], attrs[i]));
1760 have_mapped = True;
1761 } else {
1762 have_unmapped = True;
1763 attrs[i] = SID_NAME_UNKNOWN;
1764 }
1765 }
1766
1767 done:
1768
1769 result = NT_STATUS_NONE_MAPPED;
1770
1771 if (have_mapped)
1772 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1773
1774 return result;
1775 }
1776
1777 static struct pdb_search *pdb_search_init(enum pdb_search_type type)
1778 {
1779 TALLOC_CTX *mem_ctx;
1780 struct pdb_search *result;
1781
1782 mem_ctx = talloc_init("pdb_search");
1783 if (mem_ctx == NULL) {
1784 DEBUG(0, ("talloc_init failed\n"));
1785 return NULL;
1786 }
1787
1788 result = TALLOC_P(mem_ctx, struct pdb_search);
1789 if (result == NULL) {
1790 DEBUG(0, ("talloc failed\n"));
1791 return NULL;
1792 }
1793
1794 result->mem_ctx = mem_ctx;
1795 result->type = type;
1796 result->cache = NULL;
1797 result->num_entries = 0;
1798 result->cache_size = 0;
1799 result->search_ended = False;
1800
1801 /* Segfault appropriately if not initialized */
1802 result->next_entry = NULL;
1803 result->search_end = NULL;
1804
1805 return result;
1806 }
1807
1808 static void fill_displayentry(TALLOC_CTX *mem_ctx, uint32 rid,
1809 uint16 acct_flags,
1810 const char *account_name,
1811 const char *fullname,
1812 const char *description,
1813 struct samr_displayentry *entry)
1814 {
1815 entry->rid = rid;
1816 entry->acct_flags = acct_flags;
1817
1818 if (account_name != NULL)
1819 entry->account_name = talloc_strdup(mem_ctx, account_name);
1820 else
1821 entry->account_name = "";
1822
1823 if (fullname != NULL)
1824 entry->fullname = talloc_strdup(mem_ctx, fullname);
1825 else
1826 entry->fullname = "";
1827
1828 if (description != NULL)
1829 entry->description = talloc_strdup(mem_ctx, description);
1830 else
1831 entry->description = "";
1832 }
1833
1834 static BOOL user_search_in_progress = False;
1835 struct user_search {
1836 uint16 acct_flags;
1837 };
1838
1839 static BOOL next_entry_users(struct pdb_search *s,
1840 struct samr_displayentry *entry)
1841 {
1842 struct user_search *state = s->private_data;
1843 struct samu *user = NULL;
1844
1845 next:
1846 if ( !(user = samu_new( NULL )) ) {
1847 DEBUG(0, ("next_entry_users: samu_new() failed!\n"));
1848 return False;
1849 }
1850
1851 if (!pdb_getsampwent(user)) {
1852 TALLOC_FREE(user);
1853 return False;
1854 }
1855
1856 if ((state->acct_flags != 0) &&
1857 ((pdb_get_acct_ctrl(user) & state->acct_flags) == 0)) {
1858 TALLOC_FREE(user);
1859 goto next;
1860 }
1861
1862 fill_displayentry(s->mem_ctx, pdb_get_user_rid(user),
1863 pdb_get_acct_ctrl(user), pdb_get_username(user),
1864 pdb_get_fullname(user), pdb_get_acct_desc(user),
1865 entry);
1866
1867 TALLOC_FREE(user);
1868 return True;
1869 }
1870
1871 static void search_end_users(struct pdb_search *search)
1872 {
1873 pdb_endsampwent();
1874 user_search_in_progress = False;
1875 }
1876
1877 static BOOL pdb_default_search_users(struct pdb_methods *methods,
1878 struct pdb_search *search,
1879 uint32 acct_flags)
1880 {
1881 struct user_search *state;
1882
1883 if (user_search_in_progress) {
1884 DEBUG(1, ("user search in progress\n"));
1885 return False;
1886 }
1887
1888 if (!pdb_setsampwent(False, acct_flags)) {
1889 DEBUG(5, ("Could not start search\n"));
1890 return False;
1891 }
1892
1893 user_search_in_progress = True;
1894
1895 state = TALLOC_P(search->mem_ctx, struct user_search);
1896 if (state == NULL) {
1897 DEBUG(0, ("talloc failed\n"));
1898 return False;
1899 }
1900
1901 state->acct_flags = acct_flags;
1902
1903 search->private_data = state;
1904 search->next_entry = next_entry_users;
1905 search->search_end = search_end_users;
1906 return True;
1907 }
1908
1909 struct group_search {
1910 GROUP_MAP *groups;
1911 size_t num_groups, current_group;
1912 };
1913
1914 static BOOL next_entry_groups(struct pdb_search *s,
1915 struct samr_displayentry *entry)
1916 {
1917 struct group_search *state = s->private_data;
1918 uint32 rid;
1919 GROUP_MAP *map = &state->groups[state->current_group];
1920
1921 if (state->current_group == state->num_groups)
1922 return False;
1923
1924 sid_peek_rid(&map->sid, &rid);
1925
1926 fill_displayentry(s->mem_ctx, rid, 0, map->nt_name, NULL, map->comment,
1927 entry);
1928
1929 state->current_group += 1;
1930 return True;
1931 }
1932
1933 static void search_end_groups(struct pdb_search *search)
1934 {
1935 struct group_search *state = search->private_data;
1936 SAFE_FREE(state->groups);
1937 }
1938
1939 static BOOL pdb_search_grouptype(struct pdb_search *search,
1940 const DOM_SID *sid, enum SID_NAME_USE type)
1941 {
1942 struct group_search *state;
1943
1944 state = TALLOC_P(search->mem_ctx, struct group_search);
1945 if (state == NULL) {
1946 DEBUG(0, ("talloc failed\n"));
1947 return False;
1948 }
1949
1950 if (!pdb_enum_group_mapping(sid, type, &state->groups, &state->num_groups,
1951 True)) {
1952 DEBUG(0, ("Could not enum groups\n"));
1953 return False;
1954 }
1955
1956 state->current_group = 0;
1957 search->private_data = state;
1958 search->next_entry = next_entry_groups;
1959 search->search_end = search_end_groups;
1960 return True;
1961 }
1962
1963 static BOOL pdb_default_search_groups(struct pdb_methods *methods,
1964 struct pdb_search *search)
1965 {
1966 return pdb_search_grouptype(search, get_global_sam_sid(), SID_NAME_DOM_GRP);
1967 }
1968
1969 static BOOL pdb_default_search_aliases(struct pdb_methods *methods,
1970 struct pdb_search *search,
1971 const DOM_SID *sid)
1972 {
1973
1974 return pdb_search_grouptype(search, sid, SID_NAME_ALIAS);
1975 }
1976
1977 static struct samr_displayentry *pdb_search_getentry(struct pdb_search *search,
1978 uint32 idx)
1979 {
1980 if (idx < search->num_entries)
1981 return &search->cache[idx];
1982
1983 if (search->search_ended)
1984 return NULL;
1985
1986 while (idx >= search->num_entries) {
1987 struct samr_displayentry entry;
1988
1989 if (!search->next_entry(search, &entry)) {
1990 search->search_end(search);
1991 search->search_ended = True;
1992 break;
1993 }
1994
1995 ADD_TO_LARGE_ARRAY(search->mem_ctx, struct samr_displayentry,
1996 entry, &search->cache, &search->num_entries,
1997 &search->cache_size);
1998 }
1999
2000 return (search->num_entries > idx) ? &search->cache[idx] : NULL;
2001 }
2002
2003 struct pdb_search *pdb_search_users(uint32 acct_flags)
2004 {
2005 struct pdb_methods *pdb = pdb_get_methods();
2006 struct pdb_search *result;
2007
2008 if (pdb == NULL) return NULL;
2009
2010 result = pdb_search_init(PDB_USER_SEARCH);
2011 if (result == NULL) return NULL;
2012
2013 if (!pdb->search_users(pdb, result, acct_flags)) {
2014 talloc_destroy(result->mem_ctx);
2015 return NULL;
2016 }
2017 return result;
2018 }
2019
2020 struct pdb_search *pdb_search_groups(void)
2021 {
2022 struct pdb_methods *pdb = pdb_get_methods();
2023 struct pdb_search *result;
2024
2025 if (pdb == NULL) return NULL;
2026
2027 result = pdb_search_init(PDB_GROUP_SEARCH);
2028 if (result == NULL) return NULL;
2029
2030 if (!pdb->search_groups(pdb, result)) {
2031 talloc_destroy(result->mem_ctx);
2032 return NULL;
2033 }
2034 return result;
2035 }
2036
2037 struct pdb_search *pdb_search_aliases(const DOM_SID *sid)
2038 {
2039 struct pdb_methods *pdb = pdb_get_methods();
2040 struct pdb_search *result;
2041
2042 if (pdb == NULL) return NULL;
2043
2044 result = pdb_search_init(PDB_ALIAS_SEARCH);
2045 if (result == NULL) return NULL;
2046
2047 if (!pdb->search_aliases(pdb, result, sid)) {
2048 talloc_destroy(result->mem_ctx);
2049 return NULL;
2050 }
2051 return result;
2052 }
2053
2054 uint32 pdb_search_entries(struct pdb_search *search,
2055 uint32 start_idx, uint32 max_entries,
2056 struct samr_displayentry **result)
2057 {
2058 struct samr_displayentry *end_entry;
2059 uint32 end_idx = start_idx+max_entries-1;
2060
2061 /* The first entry needs to be searched after the last. Otherwise the
2062 * first entry might have moved due to a realloc during the search for
2063 * the last entry. */
2064
2065 end_entry = pdb_search_getentry(search, end_idx);
2066 *result = pdb_search_getentry(search, start_idx);
2067
2068 if (end_entry != NULL)
2069 return max_entries;
2070
2071 if (start_idx >= search->num_entries)
2072 return 0;
2073
2074 return search->num_entries - start_idx;
2075 }
2076
2077 void pdb_search_destroy(struct pdb_search *search)
2078 {
2079 if (search == NULL)
2080 return;
2081
2082 if (!search->search_ended)
2083 search->search_end(search);
2084
2085 talloc_destroy(search->mem_ctx);
2086 }
2087
2088 /*******************************************************************
2089 Create a pdb_methods structure and initialize it with the default
2090 operations. In this way a passdb module can simply implement
2091 the functionality it cares about. However, normally this is done
2092 in groups of related functions.
2093 *******************************************************************/
2094
2095 NTSTATUS make_pdb_method( struct pdb_methods **methods )
2096 {
2097 /* allocate memory for the structure as its own talloc CTX */
2098
2099 if ( !(*methods = TALLOC_ZERO_P(NULL, struct pdb_methods) ) ) {
2100 return NT_STATUS_NO_MEMORY;
2101 }
2102
2103 (*methods)->setsampwent = pdb_default_setsampwent;
2104 (*methods)->endsampwent = pdb_default_endsampwent;
2105 (*methods)->getsampwent = pdb_default_getsampwent;
2106 (*methods)->getsampwnam = pdb_default_getsampwnam;
2107 (*methods)->getsampwsid = pdb_default_getsampwsid;
2108 (*methods)->create_user = pdb_default_create_user;
2109 (*methods)->delete_user = pdb_default_delete_user;
2110 (*methods)->add_sam_account = pdb_default_add_sam_account;
2111 (*methods)->update_sam_account = pdb_default_update_sam_account;
2112 (*methods)->delete_sam_account = pdb_default_delete_sam_account;
2113 (*methods)->rename_sam_account = pdb_default_rename_sam_account;
2114 (*methods)->update_login_attempts = pdb_default_update_login_attempts;
2115
2116 (*methods)->getgrsid = pdb_default_getgrsid;
2117 (*methods)->getgrgid = pdb_default_getgrgid;
2118 (*methods)->getgrnam = pdb_default_getgrnam;
2119 (*methods)->create_dom_group = pdb_default_create_dom_group;
2120 (*methods)->delete_dom_group = pdb_default_delete_dom_group;
2121 (*methods)->add_group_mapping_entry = pdb_default_add_group_mapping_entry;
2122 (*methods)->update_group_mapping_entry = pdb_default_update_group_mapping_entry;
2123 (*methods)->delete_group_mapping_entry = pdb_default_delete_group_mapping_entry;
2124 (*methods)->enum_group_mapping = pdb_default_enum_group_mapping;
2125 (*methods)->enum_group_members = pdb_default_enum_group_members;
2126 (*methods)->enum_group_memberships = pdb_default_enum_group_memberships;
2127 (*methods)->set_unix_primary_group = pdb_default_set_unix_primary_group;
2128 (*methods)->add_groupmem = pdb_default_add_groupmem;
2129 (*methods)->del_groupmem = pdb_default_del_groupmem;
2130 (*methods)->find_alias = pdb_default_find_alias;
2131 (*methods)->create_alias = pdb_default_create_alias;
2132 (*methods)->delete_alias = pdb_default_delete_alias;
2133 (*methods)->get_aliasinfo = pdb_default_get_aliasinfo;
2134 (*methods)->set_aliasinfo = pdb_default_set_aliasinfo;
2135 (*methods)->add_aliasmem = pdb_default_add_aliasmem;
2136 (*methods)->del_aliasmem = pdb_default_del_aliasmem;
2137 (*methods)->enum_aliasmem = pdb_default_enum_aliasmem;
2138 (*methods)->enum_alias_memberships = pdb_default_alias_memberships;
2139 (*methods)->lookup_rids = pdb_default_lookup_rids;
2140 (*methods)->get_account_policy = pdb_default_get_account_policy;
2141 (*methods)->set_account_policy = pdb_default_set_account_policy;
2142 (*methods)->get_seq_num = pdb_default_get_seq_num;
2143 (*methods)->uid_to_rid = pdb_default_uid_to_rid;
2144 (*methods)->gid_to_sid = pdb_default_gid_to_sid;
2145 (*methods)->sid_to_id = pdb_default_sid_to_id;
2146
2147 (*methods)->search_users = pdb_default_search_users;
2148 (*methods)->search_groups = pdb_default_search_groups;
2149 (*methods)->search_aliases = pdb_default_search_aliases;
2150
2151 return NT_STATUS_OK;
2152 }
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