source: vendor/3.5.4/source3/passdb/pdb_interface.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 50.7 KB
Line 
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 3 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, see <http://www.gnu.org/licenses/>.
21*/
22
23#include "includes.h"
24
25#undef DBGC_CLASS
26#define DBGC_CLASS DBGC_PASSDB
27
28static_decl_pdb;
29
30static struct pdb_init_function_entry *backends = NULL;
31
32static void lazy_initialize_passdb(void)
33{
34 static bool initialized = False;
35 if(initialized) {
36 return;
37 }
38 static_init_pdb;
39 initialized = True;
40}
41
42static bool lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
43 const char **name,
44 enum lsa_SidType *psid_name_use,
45 union unid_t *unix_id);
46
47NTSTATUS smb_register_passdb(int version, const char *name, pdb_init_function init)
48{
49 struct pdb_init_function_entry *entry = backends;
50
51 if(version != PASSDB_INTERFACE_VERSION) {
52 DEBUG(0,("Can't register passdb backend!\n"
53 "You tried to register a passdb module with PASSDB_INTERFACE_VERSION %d, "
54 "while this version of samba uses version %d\n",
55 version,PASSDB_INTERFACE_VERSION));
56 return NT_STATUS_OBJECT_TYPE_MISMATCH;
57 }
58
59 if (!name || !init) {
60 return NT_STATUS_INVALID_PARAMETER;
61 }
62
63 DEBUG(5,("Attempting to register passdb backend %s\n", name));
64
65 /* Check for duplicates */
66 if (pdb_find_backend_entry(name)) {
67 DEBUG(0,("There already is a passdb backend registered with the name %s!\n", name));
68 return NT_STATUS_OBJECT_NAME_COLLISION;
69 }
70
71 entry = SMB_XMALLOC_P(struct pdb_init_function_entry);
72 entry->name = smb_xstrdup(name);
73 entry->init = init;
74
75 DLIST_ADD(backends, entry);
76 DEBUG(5,("Successfully added passdb backend '%s'\n", name));
77 return NT_STATUS_OK;
78}
79
80struct pdb_init_function_entry *pdb_find_backend_entry(const char *name)
81{
82 struct pdb_init_function_entry *entry = backends;
83
84 while(entry) {
85 if (strcmp(entry->name, name)==0) return entry;
86 entry = entry->next;
87 }
88
89 return NULL;
90}
91
92/*
93 * The event context for the passdb backend. I know this is a bad hack and yet
94 * another static variable, but our pdb API is a global thing per
95 * definition. The first use for this is the LDAP idle function, more might be
96 * added later.
97 *
98 * I don't feel too bad about this static variable, it replaces the
99 * smb_idle_event_list that used to exist in lib/module.c. -- VL
100 */
101
102static struct event_context *pdb_event_ctx;
103
104struct event_context *pdb_get_event_context(void)
105{
106 return pdb_event_ctx;
107}
108
109/******************************************************************
110 Make a pdb_methods from scratch
111 *******************************************************************/
112
113NTSTATUS make_pdb_method_name(struct pdb_methods **methods, const char *selected)
114{
115 char *module_name = smb_xstrdup(selected);
116 char *module_location = NULL, *p;
117 struct pdb_init_function_entry *entry;
118 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
119
120 lazy_initialize_passdb();
121
122 p = strchr(module_name, ':');
123
124 if (p) {
125 *p = 0;
126 module_location = p+1;
127 trim_char(module_location, ' ', ' ');
128 }
129
130 trim_char(module_name, ' ', ' ');
131
132
133 DEBUG(5,("Attempting to find a passdb backend to match %s (%s)\n", selected, module_name));
134
135 entry = pdb_find_backend_entry(module_name);
136
137 /* Try to find a module that contains this module */
138 if (!entry) {
139 DEBUG(2,("No builtin backend found, trying to load plugin\n"));
140 if(NT_STATUS_IS_OK(smb_probe_module("pdb", module_name)) && !(entry = pdb_find_backend_entry(module_name))) {
141 DEBUG(0,("Plugin is available, but doesn't register passdb backend %s\n", module_name));
142 SAFE_FREE(module_name);
143 return NT_STATUS_UNSUCCESSFUL;
144 }
145 }
146
147 /* No such backend found */
148 if(!entry) {
149 DEBUG(0,("No builtin nor plugin backend for %s found\n", module_name));
150 SAFE_FREE(module_name);
151 return NT_STATUS_INVALID_PARAMETER;
152 }
153
154 DEBUG(5,("Found pdb backend %s\n", module_name));
155
156 if ( !NT_STATUS_IS_OK( nt_status = entry->init(methods, module_location) ) ) {
157 DEBUG(0,("pdb backend %s did not correctly init (error was %s)\n",
158 selected, nt_errstr(nt_status)));
159 SAFE_FREE(module_name);
160 return nt_status;
161 }
162
163 SAFE_FREE(module_name);
164
165 DEBUG(5,("pdb backend %s has a valid init\n", selected));
166
167 return nt_status;
168}
169
170/******************************************************************
171 Return an already initialized pdb_methods structure
172*******************************************************************/
173
174static struct pdb_methods *pdb_get_methods_reload( bool reload )
175{
176 static struct pdb_methods *pdb = NULL;
177
178 if ( pdb && reload ) {
179 pdb->free_private_data( &(pdb->private_data) );
180 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
181 char *msg = NULL;
182 if (asprintf(&msg, "pdb_get_methods_reload: "
183 "failed to get pdb methods for backend %s\n",
184 lp_passdb_backend()) > 0) {
185 smb_panic(msg);
186 } else {
187 smb_panic("pdb_get_methods_reload");
188 }
189 }
190 }
191
192 if ( !pdb ) {
193 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
194 char *msg = NULL;
195 if (asprintf(&msg, "pdb_get_methods_reload: "
196 "failed to get pdb methods for backend %s\n",
197 lp_passdb_backend()) > 0) {
198 smb_panic(msg);
199 } else {
200 smb_panic("pdb_get_methods_reload");
201 }
202 }
203 }
204
205 return pdb;
206}
207
208static struct pdb_methods *pdb_get_methods(void)
209{
210 return pdb_get_methods_reload(False);
211}
212
213struct pdb_domain_info *pdb_get_domain_info(TALLOC_CTX *mem_ctx)
214{
215 struct pdb_methods *pdb = pdb_get_methods();
216 return pdb->get_domain_info(pdb, mem_ctx);
217}
218
219bool pdb_getsampwnam(struct samu *sam_acct, const char *username)
220{
221 struct pdb_methods *pdb = pdb_get_methods();
222 struct samu *for_cache;
223 const struct dom_sid *user_sid;
224
225 if (!NT_STATUS_IS_OK(pdb->getsampwnam(pdb, sam_acct, username))) {
226 return False;
227 }
228
229 for_cache = samu_new(NULL);
230 if (for_cache == NULL) {
231 return False;
232 }
233
234 if (!pdb_copy_sam_account(for_cache, sam_acct)) {
235 TALLOC_FREE(for_cache);
236 return False;
237 }
238
239 user_sid = pdb_get_user_sid(for_cache);
240
241 memcache_add_talloc(NULL, PDB_GETPWSID_CACHE,
242 data_blob_const(user_sid, sizeof(*user_sid)),
243 &for_cache);
244
245 return True;
246}
247
248/**********************************************************************
249**********************************************************************/
250
251bool guest_user_info( struct samu *user )
252{
253 struct passwd *pwd;
254 NTSTATUS result;
255 const char *guestname = lp_guestaccount();
256
257 if ( !(pwd = getpwnam_alloc(talloc_autofree_context(), guestname ) ) ) {
258 DEBUG(0,("guest_user_info: Unable to locate guest account [%s]!\n",
259 guestname));
260 return False;
261 }
262
263 result = samu_set_unix(user, pwd );
264
265 TALLOC_FREE( pwd );
266
267 return NT_STATUS_IS_OK( result );
268}
269
270/**********************************************************************
271**********************************************************************/
272
273bool pdb_getsampwsid(struct samu *sam_acct, const DOM_SID *sid)
274{
275 struct pdb_methods *pdb = pdb_get_methods();
276 uint32 rid;
277 void *cache_data;
278
279 /* hard code the Guest RID of 501 */
280
281 if ( !sid_peek_check_rid( get_global_sam_sid(), sid, &rid ) )
282 return False;
283
284 if ( rid == DOMAIN_USER_RID_GUEST ) {
285 DEBUG(6,("pdb_getsampwsid: Building guest account\n"));
286 return guest_user_info( sam_acct );
287 }
288
289 /* check the cache first */
290
291 cache_data = memcache_lookup_talloc(
292 NULL, PDB_GETPWSID_CACHE, data_blob_const(sid, sizeof(*sid)));
293
294 if (cache_data != NULL) {
295 struct samu *cache_copy = talloc_get_type_abort(
296 cache_data, struct samu);
297
298 return pdb_copy_sam_account(sam_acct, cache_copy);
299 }
300
301 return NT_STATUS_IS_OK(pdb->getsampwsid(pdb, sam_acct, sid));
302}
303
304static NTSTATUS pdb_default_create_user(struct pdb_methods *methods,
305 TALLOC_CTX *tmp_ctx, const char *name,
306 uint32 acb_info, uint32 *rid)
307{
308 struct samu *sam_pass;
309 NTSTATUS status;
310 struct passwd *pwd;
311
312 if ((sam_pass = samu_new(tmp_ctx)) == NULL) {
313 return NT_STATUS_NO_MEMORY;
314 }
315
316 if ( !(pwd = Get_Pwnam_alloc(tmp_ctx, name)) ) {
317 char *add_script = NULL;
318 int add_ret;
319 fstring name2;
320
321 if ((acb_info & ACB_NORMAL) && name[strlen(name)-1] != '$') {
322 add_script = talloc_strdup(tmp_ctx,
323 lp_adduser_script());
324 } else {
325 add_script = talloc_strdup(tmp_ctx,
326 lp_addmachine_script());
327 }
328
329 if (!add_script || add_script[0] == '\0') {
330 DEBUG(3, ("Could not find user %s and no add script "
331 "defined\n", name));
332 return NT_STATUS_NO_SUCH_USER;
333 }
334
335 /* lowercase the username before creating the Unix account for
336 compatibility with previous Samba releases */
337 fstrcpy( name2, name );
338 strlower_m( name2 );
339 add_script = talloc_all_string_sub(tmp_ctx,
340 add_script,
341 "%u",
342 name2);
343 if (!add_script) {
344 return NT_STATUS_NO_MEMORY;
345 }
346 add_ret = smbrun(add_script,NULL);
347 DEBUG(add_ret ? 0 : 3, ("_samr_create_user: Running the command `%s' gave %d\n",
348 add_script, add_ret));
349 if (add_ret == 0) {
350 smb_nscd_flush_user_cache();
351 }
352
353 flush_pwnam_cache();
354
355 pwd = Get_Pwnam_alloc(tmp_ctx, name);
356 }
357
358 /* we have a valid SID coming out of this call */
359
360 status = samu_alloc_rid_unix( sam_pass, pwd );
361
362 TALLOC_FREE( pwd );
363
364 if (!NT_STATUS_IS_OK(status)) {
365 DEBUG(3, ("pdb_default_create_user: failed to create a new user structure: %s\n", nt_errstr(status)));
366 return status;
367 }
368
369 if (!sid_peek_check_rid(get_global_sam_sid(),
370 pdb_get_user_sid(sam_pass), rid)) {
371 DEBUG(0, ("Could not get RID of fresh user\n"));
372 return NT_STATUS_INTERNAL_ERROR;
373 }
374
375 /* Use the username case specified in the original request */
376
377 pdb_set_username( sam_pass, name, PDB_SET );
378
379 /* Disable the account on creation, it does not have a reasonable password yet. */
380
381 acb_info |= ACB_DISABLED;
382
383 pdb_set_acct_ctrl(sam_pass, acb_info, PDB_CHANGED);
384
385 status = pdb_add_sam_account(sam_pass);
386
387 TALLOC_FREE(sam_pass);
388
389 return status;
390}
391
392NTSTATUS pdb_create_user(TALLOC_CTX *mem_ctx, const char *name, uint32 flags,
393 uint32 *rid)
394{
395 struct pdb_methods *pdb = pdb_get_methods();
396 return pdb->create_user(pdb, mem_ctx, name, flags, rid);
397}
398
399/****************************************************************************
400 Delete a UNIX user on demand.
401****************************************************************************/
402
403static int smb_delete_user(const char *unix_user)
404{
405 char *del_script = NULL;
406 int ret;
407
408 /* safety check */
409
410 if ( strequal( unix_user, "root" ) ) {
411 DEBUG(0,("smb_delete_user: Refusing to delete local system root account!\n"));
412 return -1;
413 }
414
415 del_script = talloc_strdup(talloc_tos(), lp_deluser_script());
416 if (!del_script || !*del_script) {
417 return -1;
418 }
419 del_script = talloc_all_string_sub(talloc_tos(),
420 del_script,
421 "%u",
422 unix_user);
423 if (!del_script) {
424 return -1;
425 }
426 ret = smbrun(del_script,NULL);
427 flush_pwnam_cache();
428 if (ret == 0) {
429 smb_nscd_flush_user_cache();
430 }
431 DEBUG(ret ? 0 : 3,("smb_delete_user: Running the command `%s' gave %d\n",del_script,ret));
432
433 return ret;
434}
435
436static NTSTATUS pdb_default_delete_user(struct pdb_methods *methods,
437 TALLOC_CTX *mem_ctx,
438 struct samu *sam_acct)
439{
440 NTSTATUS status;
441 fstring username;
442
443 status = pdb_delete_sam_account(sam_acct);
444 if (!NT_STATUS_IS_OK(status)) {
445 return status;
446 }
447
448 /*
449 * Now delete the unix side ....
450 * note: we don't check if the delete really happened as the script is
451 * not necessary present and maybe the sysadmin doesn't want to delete
452 * the unix side
453 */
454
455 /* always lower case the username before handing it off to
456 external scripts */
457
458 fstrcpy( username, pdb_get_username(sam_acct) );
459 strlower_m( username );
460
461 smb_delete_user( username );
462
463 return status;
464}
465
466NTSTATUS pdb_delete_user(TALLOC_CTX *mem_ctx, struct samu *sam_acct)
467{
468 struct pdb_methods *pdb = pdb_get_methods();
469 uid_t uid = -1;
470
471 /* sanity check to make sure we don't delete root */
472
473 if ( !sid_to_uid( pdb_get_user_sid(sam_acct), &uid ) ) {
474 return NT_STATUS_NO_SUCH_USER;
475 }
476
477 if ( uid == 0 ) {
478 return NT_STATUS_ACCESS_DENIED;
479 }
480
481 return pdb->delete_user(pdb, mem_ctx, sam_acct);
482}
483
484NTSTATUS pdb_add_sam_account(struct samu *sam_acct)
485{
486 struct pdb_methods *pdb = pdb_get_methods();
487 return pdb->add_sam_account(pdb, sam_acct);
488}
489
490NTSTATUS pdb_update_sam_account(struct samu *sam_acct)
491{
492 struct pdb_methods *pdb = pdb_get_methods();
493
494 memcache_flush(NULL, PDB_GETPWSID_CACHE);
495
496 return pdb->update_sam_account(pdb, sam_acct);
497}
498
499NTSTATUS pdb_delete_sam_account(struct samu *sam_acct)
500{
501 struct pdb_methods *pdb = pdb_get_methods();
502
503 memcache_flush(NULL, PDB_GETPWSID_CACHE);
504
505 return pdb->delete_sam_account(pdb, sam_acct);
506}
507
508NTSTATUS pdb_rename_sam_account(struct samu *oldname, const char *newname)
509{
510 struct pdb_methods *pdb = pdb_get_methods();
511 uid_t uid;
512 NTSTATUS status;
513
514 memcache_flush(NULL, PDB_GETPWSID_CACHE);
515
516 /* sanity check to make sure we don't rename root */
517
518 if ( !sid_to_uid( pdb_get_user_sid(oldname), &uid ) ) {
519 return NT_STATUS_NO_SUCH_USER;
520 }
521
522 if ( uid == 0 ) {
523 return NT_STATUS_ACCESS_DENIED;
524 }
525
526 status = pdb->rename_sam_account(pdb, oldname, newname);
527
528 /* always flush the cache here just to be safe */
529 flush_pwnam_cache();
530
531 return status;
532}
533
534NTSTATUS pdb_update_login_attempts(struct samu *sam_acct, bool success)
535{
536 struct pdb_methods *pdb = pdb_get_methods();
537 return pdb->update_login_attempts(pdb, sam_acct, success);
538}
539
540bool pdb_getgrsid(GROUP_MAP *map, DOM_SID sid)
541{
542 struct pdb_methods *pdb = pdb_get_methods();
543 return NT_STATUS_IS_OK(pdb->getgrsid(pdb, map, sid));
544}
545
546bool pdb_getgrgid(GROUP_MAP *map, gid_t gid)
547{
548 struct pdb_methods *pdb = pdb_get_methods();
549 return NT_STATUS_IS_OK(pdb->getgrgid(pdb, map, gid));
550}
551
552bool pdb_getgrnam(GROUP_MAP *map, const char *name)
553{
554 struct pdb_methods *pdb = pdb_get_methods();
555 return NT_STATUS_IS_OK(pdb->getgrnam(pdb, map, name));
556}
557
558static NTSTATUS pdb_default_create_dom_group(struct pdb_methods *methods,
559 TALLOC_CTX *mem_ctx,
560 const char *name,
561 uint32 *rid)
562{
563 DOM_SID group_sid;
564 struct group *grp;
565 fstring tmp;
566
567 grp = getgrnam(name);
568
569 if (grp == NULL) {
570 gid_t gid;
571
572 if (smb_create_group(name, &gid) != 0) {
573 return NT_STATUS_ACCESS_DENIED;
574 }
575
576 grp = getgrgid(gid);
577 }
578
579 if (grp == NULL) {
580 return NT_STATUS_ACCESS_DENIED;
581 }
582
583 if (pdb_capabilities() & PDB_CAP_STORE_RIDS) {
584 if (!pdb_new_rid(rid)) {
585 return NT_STATUS_ACCESS_DENIED;
586 }
587 } else {
588 *rid = algorithmic_pdb_gid_to_group_rid( grp->gr_gid );
589 }
590
591 sid_compose(&group_sid, get_global_sam_sid(), *rid);
592
593 return add_initial_entry(grp->gr_gid, sid_to_fstring(tmp, &group_sid),
594 SID_NAME_DOM_GRP, name, NULL);
595}
596
597NTSTATUS pdb_create_dom_group(TALLOC_CTX *mem_ctx, const char *name,
598 uint32 *rid)
599{
600 struct pdb_methods *pdb = pdb_get_methods();
601 return pdb->create_dom_group(pdb, mem_ctx, name, rid);
602}
603
604static NTSTATUS pdb_default_delete_dom_group(struct pdb_methods *methods,
605 TALLOC_CTX *mem_ctx,
606 uint32 rid)
607{
608 DOM_SID group_sid;
609 GROUP_MAP map;
610 NTSTATUS status;
611 struct group *grp;
612 const char *grp_name;
613
614 /* coverity */
615 map.gid = (gid_t) -1;
616
617 sid_compose(&group_sid, get_global_sam_sid(), rid);
618
619 if (!get_domain_group_from_sid(group_sid, &map)) {
620 DEBUG(10, ("Could not find group for rid %d\n", rid));
621 return NT_STATUS_NO_SUCH_GROUP;
622 }
623
624 /* We need the group name for the smb_delete_group later on */
625
626 if (map.gid == (gid_t)-1) {
627 return NT_STATUS_NO_SUCH_GROUP;
628 }
629
630 grp = getgrgid(map.gid);
631 if (grp == NULL) {
632 return NT_STATUS_NO_SUCH_GROUP;
633 }
634
635 /* Copy the name, no idea what pdb_delete_group_mapping_entry does.. */
636
637 grp_name = talloc_strdup(mem_ctx, grp->gr_name);
638 if (grp_name == NULL) {
639 return NT_STATUS_NO_MEMORY;
640 }
641
642 status = pdb_delete_group_mapping_entry(group_sid);
643
644 if (!NT_STATUS_IS_OK(status)) {
645 return status;
646 }
647
648 /* Don't check the result of smb_delete_group */
649
650 smb_delete_group(grp_name);
651
652 return NT_STATUS_OK;
653}
654
655NTSTATUS pdb_delete_dom_group(TALLOC_CTX *mem_ctx, uint32 rid)
656{
657 struct pdb_methods *pdb = pdb_get_methods();
658 return pdb->delete_dom_group(pdb, mem_ctx, rid);
659}
660
661NTSTATUS pdb_add_group_mapping_entry(GROUP_MAP *map)
662{
663 struct pdb_methods *pdb = pdb_get_methods();
664 return pdb->add_group_mapping_entry(pdb, map);
665}
666
667NTSTATUS pdb_update_group_mapping_entry(GROUP_MAP *map)
668{
669 struct pdb_methods *pdb = pdb_get_methods();
670 return pdb->update_group_mapping_entry(pdb, map);
671}
672
673NTSTATUS pdb_delete_group_mapping_entry(DOM_SID sid)
674{
675 struct pdb_methods *pdb = pdb_get_methods();
676 return pdb->delete_group_mapping_entry(pdb, sid);
677}
678
679bool pdb_enum_group_mapping(const DOM_SID *sid, enum lsa_SidType sid_name_use, GROUP_MAP **pp_rmap,
680 size_t *p_num_entries, bool unix_only)
681{
682 struct pdb_methods *pdb = pdb_get_methods();
683 return NT_STATUS_IS_OK(pdb-> enum_group_mapping(pdb, sid, sid_name_use,
684 pp_rmap, p_num_entries, unix_only));
685}
686
687NTSTATUS pdb_enum_group_members(TALLOC_CTX *mem_ctx,
688 const DOM_SID *sid,
689 uint32 **pp_member_rids,
690 size_t *p_num_members)
691{
692 struct pdb_methods *pdb = pdb_get_methods();
693 NTSTATUS result;
694
695 result = pdb->enum_group_members(pdb, mem_ctx,
696 sid, pp_member_rids, p_num_members);
697
698 /* special check for rid 513 */
699
700 if ( !NT_STATUS_IS_OK( result ) ) {
701 uint32 rid;
702
703 sid_peek_rid( sid, &rid );
704
705 if ( rid == DOMAIN_GROUP_RID_USERS ) {
706 *p_num_members = 0;
707 *pp_member_rids = NULL;
708
709 return NT_STATUS_OK;
710 }
711 }
712
713 return result;
714}
715
716NTSTATUS pdb_enum_group_memberships(TALLOC_CTX *mem_ctx, struct samu *user,
717 DOM_SID **pp_sids, gid_t **pp_gids,
718 size_t *p_num_groups)
719{
720 struct pdb_methods *pdb = pdb_get_methods();
721 return pdb->enum_group_memberships(
722 pdb, mem_ctx, user,
723 pp_sids, pp_gids, p_num_groups);
724}
725
726static NTSTATUS pdb_default_set_unix_primary_group(struct pdb_methods *methods,
727 TALLOC_CTX *mem_ctx,
728 struct samu *sampass)
729{
730 struct group *grp;
731 gid_t gid;
732
733 if (!sid_to_gid(pdb_get_group_sid(sampass), &gid) ||
734 (grp = getgrgid(gid)) == NULL) {
735 return NT_STATUS_INVALID_PRIMARY_GROUP;
736 }
737
738 if (smb_set_primary_group(grp->gr_name,
739 pdb_get_username(sampass)) != 0) {
740 return NT_STATUS_ACCESS_DENIED;
741 }
742
743 return NT_STATUS_OK;
744}
745
746NTSTATUS pdb_set_unix_primary_group(TALLOC_CTX *mem_ctx, struct samu *user)
747{
748 struct pdb_methods *pdb = pdb_get_methods();
749 return pdb->set_unix_primary_group(pdb, mem_ctx, user);
750}
751
752/*
753 * Helper function to see whether a user is in a group. We can't use
754 * user_in_group_sid here because this creates dependencies only smbd can
755 * fulfil.
756 */
757
758static bool pdb_user_in_group(TALLOC_CTX *mem_ctx, struct samu *account,
759 const DOM_SID *group_sid)
760{
761 DOM_SID *sids;
762 gid_t *gids;
763 size_t i, num_groups;
764
765 if (!NT_STATUS_IS_OK(pdb_enum_group_memberships(mem_ctx, account,
766 &sids, &gids,
767 &num_groups))) {
768 return False;
769 }
770
771 for (i=0; i<num_groups; i++) {
772 if (sid_equal(group_sid, &sids[i])) {
773 return True;
774 }
775 }
776 return False;
777}
778
779static NTSTATUS pdb_default_add_groupmem(struct pdb_methods *methods,
780 TALLOC_CTX *mem_ctx,
781 uint32 group_rid,
782 uint32 member_rid)
783{
784 DOM_SID group_sid, member_sid;
785 struct samu *account = NULL;
786 GROUP_MAP map;
787 struct group *grp;
788 struct passwd *pwd;
789 const char *group_name;
790 uid_t uid;
791
792 /* coverity */
793 map.gid = (gid_t) -1;
794
795 sid_compose(&group_sid, get_global_sam_sid(), group_rid);
796 sid_compose(&member_sid, get_global_sam_sid(), member_rid);
797
798 if (!get_domain_group_from_sid(group_sid, &map) ||
799 (map.gid == (gid_t)-1) ||
800 ((grp = getgrgid(map.gid)) == NULL)) {
801 return NT_STATUS_NO_SUCH_GROUP;
802 }
803
804 group_name = talloc_strdup(mem_ctx, grp->gr_name);
805 if (group_name == NULL) {
806 return NT_STATUS_NO_MEMORY;
807 }
808
809 if ( !(account = samu_new( NULL )) ) {
810 return NT_STATUS_NO_MEMORY;
811 }
812
813 if (!pdb_getsampwsid(account, &member_sid) ||
814 !sid_to_uid(&member_sid, &uid) ||
815 ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
816 return NT_STATUS_NO_SUCH_USER;
817 }
818
819 if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
820 return NT_STATUS_MEMBER_IN_GROUP;
821 }
822
823 /*
824 * ok, the group exist, the user exist, the user is not in the group,
825 * we can (finally) add it to the group !
826 */
827
828 smb_add_user_group(group_name, pwd->pw_name);
829
830 if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
831 return NT_STATUS_ACCESS_DENIED;
832 }
833
834 return NT_STATUS_OK;
835}
836
837NTSTATUS pdb_add_groupmem(TALLOC_CTX *mem_ctx, uint32 group_rid,
838 uint32 member_rid)
839{
840 struct pdb_methods *pdb = pdb_get_methods();
841 return pdb->add_groupmem(pdb, mem_ctx, group_rid, member_rid);
842}
843
844static NTSTATUS pdb_default_del_groupmem(struct pdb_methods *methods,
845 TALLOC_CTX *mem_ctx,
846 uint32 group_rid,
847 uint32 member_rid)
848{
849 DOM_SID group_sid, member_sid;
850 struct samu *account = NULL;
851 GROUP_MAP map;
852 struct group *grp;
853 struct passwd *pwd;
854 const char *group_name;
855 uid_t uid;
856
857 sid_compose(&group_sid, get_global_sam_sid(), group_rid);
858 sid_compose(&member_sid, get_global_sam_sid(), member_rid);
859
860 if (!get_domain_group_from_sid(group_sid, &map) ||
861 (map.gid == (gid_t)-1) ||
862 ((grp = getgrgid(map.gid)) == NULL)) {
863 return NT_STATUS_NO_SUCH_GROUP;
864 }
865
866 group_name = talloc_strdup(mem_ctx, grp->gr_name);
867 if (group_name == NULL) {
868 return NT_STATUS_NO_MEMORY;
869 }
870
871 if ( !(account = samu_new( NULL )) ) {
872 return NT_STATUS_NO_MEMORY;
873 }
874
875 if (!pdb_getsampwsid(account, &member_sid) ||
876 !sid_to_uid(&member_sid, &uid) ||
877 ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
878 return NT_STATUS_NO_SUCH_USER;
879 }
880
881 if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
882 return NT_STATUS_MEMBER_NOT_IN_GROUP;
883 }
884
885 /*
886 * ok, the group exist, the user exist, the user is in the group,
887 * we can (finally) delete it from the group!
888 */
889
890 smb_delete_user_group(group_name, pwd->pw_name);
891
892 if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
893 return NT_STATUS_ACCESS_DENIED;
894 }
895
896 return NT_STATUS_OK;
897}
898
899NTSTATUS pdb_del_groupmem(TALLOC_CTX *mem_ctx, uint32 group_rid,
900 uint32 member_rid)
901{
902 struct pdb_methods *pdb = pdb_get_methods();
903 return pdb->del_groupmem(pdb, mem_ctx, group_rid, member_rid);
904}
905
906NTSTATUS pdb_create_alias(const char *name, uint32 *rid)
907{
908 struct pdb_methods *pdb = pdb_get_methods();
909 return pdb->create_alias(pdb, name, rid);
910}
911
912NTSTATUS pdb_delete_alias(const DOM_SID *sid)
913{
914 struct pdb_methods *pdb = pdb_get_methods();
915 return pdb->delete_alias(pdb, sid);
916}
917
918NTSTATUS pdb_get_aliasinfo(const DOM_SID *sid, struct acct_info *info)
919{
920 struct pdb_methods *pdb = pdb_get_methods();
921 return pdb->get_aliasinfo(pdb, sid, info);
922}
923
924NTSTATUS pdb_set_aliasinfo(const DOM_SID *sid, struct acct_info *info)
925{
926 struct pdb_methods *pdb = pdb_get_methods();
927 return pdb->set_aliasinfo(pdb, sid, info);
928}
929
930NTSTATUS pdb_add_aliasmem(const DOM_SID *alias, const DOM_SID *member)
931{
932 struct pdb_methods *pdb = pdb_get_methods();
933 return pdb->add_aliasmem(pdb, alias, member);
934}
935
936NTSTATUS pdb_del_aliasmem(const DOM_SID *alias, const DOM_SID *member)
937{
938 struct pdb_methods *pdb = pdb_get_methods();
939 return pdb->del_aliasmem(pdb, alias, member);
940}
941
942NTSTATUS pdb_enum_aliasmem(const DOM_SID *alias, TALLOC_CTX *mem_ctx,
943 DOM_SID **pp_members, size_t *p_num_members)
944{
945 struct pdb_methods *pdb = pdb_get_methods();
946 return pdb->enum_aliasmem(pdb, alias, mem_ctx, pp_members,
947 p_num_members);
948}
949
950NTSTATUS pdb_enum_alias_memberships(TALLOC_CTX *mem_ctx,
951 const DOM_SID *domain_sid,
952 const DOM_SID *members, size_t num_members,
953 uint32 **pp_alias_rids,
954 size_t *p_num_alias_rids)
955{
956 struct pdb_methods *pdb = pdb_get_methods();
957 return pdb->enum_alias_memberships(pdb, mem_ctx,
958 domain_sid,
959 members, num_members,
960 pp_alias_rids,
961 p_num_alias_rids);
962}
963
964NTSTATUS pdb_lookup_rids(const DOM_SID *domain_sid,
965 int num_rids,
966 uint32 *rids,
967 const char **names,
968 enum lsa_SidType *attrs)
969{
970 struct pdb_methods *pdb = pdb_get_methods();
971 return pdb->lookup_rids(pdb, domain_sid, num_rids, rids, names, attrs);
972}
973
974/*
975 * NOTE: pdb_lookup_names is currently (2007-01-12) not used anywhere
976 * in the samba code.
977 * Unlike _lsa_lookup_sids and _samr_lookup_rids, which eventually
978 * also ask pdb_lookup_rids, thus looking up a bunch of rids at a time,
979 * the pdb_ calls _lsa_lookup_names and _samr_lookup_names come
980 * down to are pdb_getsampwnam and pdb_getgrnam instead of
981 * pdb_lookup_names.
982 * But in principle, it the call belongs to the API and might get
983 * used in this context some day.
984 */
985#if 0
986NTSTATUS pdb_lookup_names(const DOM_SID *domain_sid,
987 int num_names,
988 const char **names,
989 uint32 *rids,
990 enum lsa_SidType *attrs)
991{
992 struct pdb_methods *pdb = pdb_get_methods();
993 return pdb->lookup_names(pdb, domain_sid, num_names, names, rids, attrs);
994}
995#endif
996
997bool pdb_get_account_policy(enum pdb_policy_type type, uint32_t *value)
998{
999 struct pdb_methods *pdb = pdb_get_methods();
1000 NTSTATUS status;
1001
1002 become_root();
1003 status = pdb->get_account_policy(pdb, type, value);
1004 unbecome_root();
1005
1006 return NT_STATUS_IS_OK(status);
1007}
1008
1009bool pdb_set_account_policy(enum pdb_policy_type type, uint32_t value)
1010{
1011 struct pdb_methods *pdb = pdb_get_methods();
1012 NTSTATUS status;
1013
1014 become_root();
1015 status = pdb->set_account_policy(pdb, type, value);
1016 unbecome_root();
1017
1018 return NT_STATUS_IS_OK(status);
1019}
1020
1021bool pdb_get_seq_num(time_t *seq_num)
1022{
1023 struct pdb_methods *pdb = pdb_get_methods();
1024 return NT_STATUS_IS_OK(pdb->get_seq_num(pdb, seq_num));
1025}
1026
1027bool pdb_uid_to_sid(uid_t uid, DOM_SID *sid)
1028{
1029 struct pdb_methods *pdb = pdb_get_methods();
1030 return pdb->uid_to_sid(pdb, uid, sid);
1031}
1032
1033bool pdb_gid_to_sid(gid_t gid, DOM_SID *sid)
1034{
1035 struct pdb_methods *pdb = pdb_get_methods();
1036 return pdb->gid_to_sid(pdb, gid, sid);
1037}
1038
1039bool pdb_sid_to_id(const DOM_SID *sid, union unid_t *id,
1040 enum lsa_SidType *type)
1041{
1042 struct pdb_methods *pdb = pdb_get_methods();
1043 return pdb->sid_to_id(pdb, sid, id, type);
1044}
1045
1046uint32_t pdb_capabilities(void)
1047{
1048 struct pdb_methods *pdb = pdb_get_methods();
1049 return pdb->capabilities(pdb);
1050}
1051
1052/********************************************************************
1053 Allocate a new RID from the passdb backend. Verify that it is free
1054 by calling lookup_global_sam_rid() to verify that the RID is not
1055 in use. This handles servers that have existing users or groups
1056 with add RIDs (assigned from previous algorithmic mappings)
1057********************************************************************/
1058
1059bool pdb_new_rid(uint32 *rid)
1060{
1061 struct pdb_methods *pdb = pdb_get_methods();
1062 const char *name = NULL;
1063 enum lsa_SidType type;
1064 uint32 allocated_rid = 0;
1065 int i;
1066 TALLOC_CTX *ctx;
1067
1068 if ((pdb_capabilities() & PDB_CAP_STORE_RIDS) == 0) {
1069 DEBUG(0, ("Trying to allocate a RID when algorithmic RIDs "
1070 "are active\n"));
1071 return False;
1072 }
1073
1074 if (algorithmic_rid_base() != BASE_RID) {
1075 DEBUG(0, ("'algorithmic rid base' is set but a passdb backend "
1076 "without algorithmic RIDs is chosen.\n"));
1077 DEBUGADD(0, ("Please map all used groups using 'net groupmap "
1078 "add', set the maximum used RID\n"));
1079 DEBUGADD(0, ("and remove the parameter\n"));
1080 return False;
1081 }
1082
1083 if ( (ctx = talloc_init("pdb_new_rid")) == NULL ) {
1084 DEBUG(0,("pdb_new_rid: Talloc initialization failure\n"));
1085 return False;
1086 }
1087
1088 /* Attempt to get an unused RID (max tires is 250...yes that it is
1089 and arbitrary number I pulkled out of my head). -- jerry */
1090
1091 for ( i=0; allocated_rid==0 && i<250; i++ ) {
1092 /* get a new RID */
1093
1094 if ( !pdb->new_rid(pdb, &allocated_rid) ) {
1095 return False;
1096 }
1097
1098 /* validate that the RID is not in use */
1099
1100 if ( lookup_global_sam_rid( ctx, allocated_rid, &name, &type, NULL ) ) {
1101 allocated_rid = 0;
1102 }
1103 }
1104
1105 TALLOC_FREE( ctx );
1106
1107 if ( allocated_rid == 0 ) {
1108 DEBUG(0,("pdb_new_rid: Failed to find unused RID\n"));
1109 return False;
1110 }
1111
1112 *rid = allocated_rid;
1113
1114 return True;
1115}
1116
1117/***************************************************************
1118 Initialize the static context (at smbd startup etc).
1119
1120 If uninitialised, context will auto-init on first use.
1121 ***************************************************************/
1122
1123bool initialize_password_db(bool reload, struct event_context *event_ctx)
1124{
1125 pdb_event_ctx = event_ctx;
1126 return (pdb_get_methods_reload(reload) != NULL);
1127}
1128
1129
1130/***************************************************************************
1131 Default implementations of some functions.
1132 ****************************************************************************/
1133
1134static NTSTATUS pdb_default_getsampwnam (struct pdb_methods *methods, struct samu *user, const char *sname)
1135{
1136 return NT_STATUS_NO_SUCH_USER;
1137}
1138
1139static NTSTATUS pdb_default_getsampwsid(struct pdb_methods *my_methods, struct samu * user, const DOM_SID *sid)
1140{
1141 return NT_STATUS_NO_SUCH_USER;
1142}
1143
1144static NTSTATUS pdb_default_add_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1145{
1146 return NT_STATUS_NOT_IMPLEMENTED;
1147}
1148
1149static NTSTATUS pdb_default_update_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1150{
1151 return NT_STATUS_NOT_IMPLEMENTED;
1152}
1153
1154static NTSTATUS pdb_default_delete_sam_account (struct pdb_methods *methods, struct samu *pwd)
1155{
1156 return NT_STATUS_NOT_IMPLEMENTED;
1157}
1158
1159static NTSTATUS pdb_default_rename_sam_account (struct pdb_methods *methods, struct samu *pwd, const char *newname)
1160{
1161 return NT_STATUS_NOT_IMPLEMENTED;
1162}
1163
1164static NTSTATUS pdb_default_update_login_attempts (struct pdb_methods *methods, struct samu *newpwd, bool success)
1165{
1166 /* Only the pdb_nds backend implements this, by
1167 * default just return ok. */
1168 return NT_STATUS_OK;
1169}
1170
1171static NTSTATUS pdb_default_get_account_policy(struct pdb_methods *methods, enum pdb_policy_type type, uint32_t *value)
1172{
1173 return account_policy_get(type, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1174}
1175
1176static NTSTATUS pdb_default_set_account_policy(struct pdb_methods *methods, enum pdb_policy_type type, uint32_t value)
1177{
1178 return account_policy_set(type, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1179}
1180
1181static NTSTATUS pdb_default_get_seq_num(struct pdb_methods *methods, time_t *seq_num)
1182{
1183 *seq_num = time(NULL);
1184 return NT_STATUS_OK;
1185}
1186
1187static bool pdb_default_uid_to_sid(struct pdb_methods *methods, uid_t uid,
1188 DOM_SID *sid)
1189{
1190 struct samu *sampw = NULL;
1191 struct passwd *unix_pw;
1192 bool ret;
1193
1194 unix_pw = sys_getpwuid( uid );
1195
1196 if ( !unix_pw ) {
1197 DEBUG(4,("pdb_default_uid_to_sid: host has no idea of uid "
1198 "%lu\n", (unsigned long)uid));
1199 return False;
1200 }
1201
1202 if ( !(sampw = samu_new( NULL )) ) {
1203 DEBUG(0,("pdb_default_uid_to_sid: samu_new() failed!\n"));
1204 return False;
1205 }
1206
1207 become_root();
1208 ret = NT_STATUS_IS_OK(
1209 methods->getsampwnam(methods, sampw, unix_pw->pw_name ));
1210 unbecome_root();
1211
1212 if (!ret) {
1213 DEBUG(5, ("pdb_default_uid_to_sid: Did not find user "
1214 "%s (%u)\n", unix_pw->pw_name, (unsigned int)uid));
1215 TALLOC_FREE(sampw);
1216 return False;
1217 }
1218
1219 sid_copy(sid, pdb_get_user_sid(sampw));
1220
1221 TALLOC_FREE(sampw);
1222
1223 return True;
1224}
1225
1226static bool pdb_default_gid_to_sid(struct pdb_methods *methods, gid_t gid,
1227 DOM_SID *sid)
1228{
1229 GROUP_MAP map;
1230
1231 if (!NT_STATUS_IS_OK(methods->getgrgid(methods, &map, gid))) {
1232 return False;
1233 }
1234
1235 sid_copy(sid, &map.sid);
1236 return True;
1237}
1238
1239static bool pdb_default_sid_to_id(struct pdb_methods *methods,
1240 const DOM_SID *sid,
1241 union unid_t *id, enum lsa_SidType *type)
1242{
1243 TALLOC_CTX *mem_ctx;
1244 bool ret = False;
1245 const char *name;
1246 uint32 rid;
1247
1248 mem_ctx = talloc_new(NULL);
1249
1250 if (mem_ctx == NULL) {
1251 DEBUG(0, ("talloc_new failed\n"));
1252 return False;
1253 }
1254
1255 if (sid_peek_check_rid(get_global_sam_sid(), sid, &rid)) {
1256 /* Here we might have users as well as groups and aliases */
1257 ret = lookup_global_sam_rid(mem_ctx, rid, &name, type, id);
1258 goto done;
1259 }
1260
1261 /* check for "Unix User" */
1262
1263 if ( sid_peek_check_rid(&global_sid_Unix_Users, sid, &rid) ) {
1264 id->uid = rid;
1265 *type = SID_NAME_USER;
1266 ret = True;
1267 goto done;
1268 }
1269
1270 /* check for "Unix Group" */
1271
1272 if ( sid_peek_check_rid(&global_sid_Unix_Groups, sid, &rid) ) {
1273 id->gid = rid;
1274 *type = SID_NAME_ALIAS;
1275 ret = True;
1276 goto done;
1277 }
1278
1279 /* BUILTIN */
1280
1281 if (sid_check_is_in_builtin(sid) ||
1282 sid_check_is_in_wellknown_domain(sid)) {
1283 /* Here we only have aliases */
1284 GROUP_MAP map;
1285 if (!NT_STATUS_IS_OK(methods->getgrsid(methods, &map, *sid))) {
1286 DEBUG(10, ("Could not find map for sid %s\n",
1287 sid_string_dbg(sid)));
1288 goto done;
1289 }
1290 if ((map.sid_name_use != SID_NAME_ALIAS) &&
1291 (map.sid_name_use != SID_NAME_WKN_GRP)) {
1292 DEBUG(10, ("Map for sid %s is a %s, expected an "
1293 "alias\n", sid_string_dbg(sid),
1294 sid_type_lookup(map.sid_name_use)));
1295 goto done;
1296 }
1297
1298 id->gid = map.gid;
1299 *type = SID_NAME_ALIAS;
1300 ret = True;
1301 goto done;
1302 }
1303
1304 DEBUG(5, ("Sid %s is neither ours, a Unix SID, nor builtin\n",
1305 sid_string_dbg(sid)));
1306
1307 done:
1308
1309 TALLOC_FREE(mem_ctx);
1310 return ret;
1311}
1312
1313static bool get_memberuids(TALLOC_CTX *mem_ctx, gid_t gid, uid_t **pp_uids, size_t *p_num)
1314{
1315 struct group *grp;
1316 char **gr;
1317 struct passwd *pwd;
1318 bool winbind_env;
1319 bool ret = False;
1320
1321 *pp_uids = NULL;
1322 *p_num = 0;
1323
1324 /* We only look at our own sam, so don't care about imported stuff */
1325 winbind_env = winbind_env_set();
1326 (void)winbind_off();
1327
1328 if ((grp = getgrgid(gid)) == NULL) {
1329 /* allow winbindd lookups, but only if they weren't already disabled */
1330 goto done;
1331 }
1332
1333 /* Primary group members */
1334 setpwent();
1335 while ((pwd = getpwent()) != NULL) {
1336 if (pwd->pw_gid == gid) {
1337 if (!add_uid_to_array_unique(mem_ctx, pwd->pw_uid,
1338 pp_uids, p_num)) {
1339 goto done;
1340 }
1341 }
1342 }
1343 endpwent();
1344
1345 /* Secondary group members */
1346 for (gr = grp->gr_mem; (*gr != NULL) && ((*gr)[0] != '\0'); gr += 1) {
1347 struct passwd *pw = getpwnam(*gr);
1348
1349 if (pw == NULL)
1350 continue;
1351 if (!add_uid_to_array_unique(mem_ctx, pw->pw_uid, pp_uids, p_num)) {
1352 goto done;
1353 }
1354 }
1355
1356 ret = True;
1357
1358 done:
1359
1360 /* allow winbindd lookups, but only if they weren't already disabled */
1361 if (!winbind_env) {
1362 (void)winbind_on();
1363 }
1364
1365 return ret;
1366}
1367
1368static NTSTATUS pdb_default_enum_group_members(struct pdb_methods *methods,
1369 TALLOC_CTX *mem_ctx,
1370 const DOM_SID *group,
1371 uint32 **pp_member_rids,
1372 size_t *p_num_members)
1373{
1374 gid_t gid;
1375 uid_t *uids;
1376 size_t i, num_uids;
1377
1378 *pp_member_rids = NULL;
1379 *p_num_members = 0;
1380
1381 if (!sid_to_gid(group, &gid))
1382 return NT_STATUS_NO_SUCH_GROUP;
1383
1384 if(!get_memberuids(mem_ctx, gid, &uids, &num_uids))
1385 return NT_STATUS_NO_SUCH_GROUP;
1386
1387 if (num_uids == 0)
1388 return NT_STATUS_OK;
1389
1390 *pp_member_rids = TALLOC_ZERO_ARRAY(mem_ctx, uint32, num_uids);
1391
1392 for (i=0; i<num_uids; i++) {
1393 DOM_SID sid;
1394
1395 uid_to_sid(&sid, uids[i]);
1396
1397 if (!sid_check_is_in_our_domain(&sid)) {
1398 DEBUG(5, ("Inconsistent SAM -- group member uid not "
1399 "in our domain\n"));
1400 continue;
1401 }
1402
1403 sid_peek_rid(&sid, &(*pp_member_rids)[*p_num_members]);
1404 *p_num_members += 1;
1405 }
1406
1407 return NT_STATUS_OK;
1408}
1409
1410static NTSTATUS pdb_default_enum_group_memberships(struct pdb_methods *methods,
1411 TALLOC_CTX *mem_ctx,
1412 struct samu *user,
1413 DOM_SID **pp_sids,
1414 gid_t **pp_gids,
1415 size_t *p_num_groups)
1416{
1417 size_t i;
1418 gid_t gid;
1419 struct passwd *pw;
1420 const char *username = pdb_get_username(user);
1421
1422
1423 /* Ignore the primary group SID. Honor the real Unix primary group.
1424 The primary group SID is only of real use to Windows clients */
1425
1426 if ( !(pw = getpwnam_alloc(mem_ctx, username)) ) {
1427 return NT_STATUS_NO_SUCH_USER;
1428 }
1429
1430 gid = pw->pw_gid;
1431
1432 TALLOC_FREE( pw );
1433
1434 if (!getgroups_unix_user(mem_ctx, username, gid, pp_gids, p_num_groups)) {
1435 return NT_STATUS_NO_SUCH_USER;
1436 }
1437
1438 if (*p_num_groups == 0) {
1439 smb_panic("primary group missing");
1440 }
1441
1442 *pp_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, *p_num_groups);
1443
1444 if (*pp_sids == NULL) {
1445 TALLOC_FREE(*pp_gids);
1446 return NT_STATUS_NO_MEMORY;
1447 }
1448
1449 for (i=0; i<*p_num_groups; i++) {
1450 gid_to_sid(&(*pp_sids)[i], (*pp_gids)[i]);
1451 }
1452
1453 return NT_STATUS_OK;
1454}
1455
1456/*******************************************************************
1457 Look up a rid in the SAM we're responsible for (i.e. passdb)
1458 ********************************************************************/
1459
1460static bool lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
1461 const char **name,
1462 enum lsa_SidType *psid_name_use,
1463 union unid_t *unix_id)
1464{
1465 struct samu *sam_account = NULL;
1466 GROUP_MAP map;
1467 bool ret;
1468 DOM_SID sid;
1469
1470 *psid_name_use = SID_NAME_UNKNOWN;
1471
1472 DEBUG(5,("lookup_global_sam_rid: looking up RID %u.\n",
1473 (unsigned int)rid));
1474
1475 sid_copy(&sid, get_global_sam_sid());
1476 sid_append_rid(&sid, rid);
1477
1478 /* see if the passdb can help us with the name of the user */
1479
1480 if ( !(sam_account = samu_new( NULL )) ) {
1481 return False;
1482 }
1483
1484 /* BEING ROOT BLLOCK */
1485 become_root();
1486 if (pdb_getsampwsid(sam_account, &sid)) {
1487 struct passwd *pw;
1488
1489 unbecome_root(); /* -----> EXIT BECOME_ROOT() */
1490 *name = talloc_strdup(mem_ctx, pdb_get_username(sam_account));
1491 if (!*name) {
1492 TALLOC_FREE(sam_account);
1493 return False;
1494 }
1495
1496 *psid_name_use = SID_NAME_USER;
1497
1498 TALLOC_FREE(sam_account);
1499
1500 if (unix_id == NULL) {
1501 return True;
1502 }
1503
1504 pw = Get_Pwnam_alloc(talloc_tos(), *name);
1505 if (pw == NULL) {
1506 return False;
1507 }
1508 unix_id->uid = pw->pw_uid;
1509 TALLOC_FREE(pw);
1510 return True;
1511 }
1512 TALLOC_FREE(sam_account);
1513
1514 ret = pdb_getgrsid(&map, sid);
1515 unbecome_root();
1516 /* END BECOME_ROOT BLOCK */
1517
1518 /* do not resolve SIDs to a name unless there is a valid
1519 gid associated with it */
1520
1521 if ( ret && (map.gid != (gid_t)-1) ) {
1522 *name = talloc_strdup(mem_ctx, map.nt_name);
1523 *psid_name_use = map.sid_name_use;
1524
1525 if ( unix_id ) {
1526 unix_id->gid = map.gid;
1527 }
1528
1529 return True;
1530 }
1531
1532 /* Windows will always map RID 513 to something. On a non-domain
1533 controller, this gets mapped to SERVER\None. */
1534
1535 if ( unix_id ) {
1536 DEBUG(5, ("Can't find a unix id for an unmapped group\n"));
1537 return False;
1538 }
1539
1540 if ( rid == DOMAIN_GROUP_RID_USERS ) {
1541 *name = talloc_strdup(mem_ctx, "None" );
1542 *psid_name_use = SID_NAME_DOM_GRP;
1543
1544 return True;
1545 }
1546
1547 return False;
1548}
1549
1550static NTSTATUS pdb_default_lookup_rids(struct pdb_methods *methods,
1551 const DOM_SID *domain_sid,
1552 int num_rids,
1553 uint32 *rids,
1554 const char **names,
1555 enum lsa_SidType *attrs)
1556{
1557 int i;
1558 NTSTATUS result;
1559 bool have_mapped = False;
1560 bool have_unmapped = False;
1561
1562 if (sid_check_is_builtin(domain_sid)) {
1563
1564 for (i=0; i<num_rids; i++) {
1565 const char *name;
1566
1567 if (lookup_builtin_rid(names, rids[i], &name)) {
1568 attrs[i] = SID_NAME_ALIAS;
1569 names[i] = name;
1570 DEBUG(5,("lookup_rids: %s:%d\n",
1571 names[i], attrs[i]));
1572 have_mapped = True;
1573 } else {
1574 have_unmapped = True;
1575 attrs[i] = SID_NAME_UNKNOWN;
1576 }
1577 }
1578 goto done;
1579 }
1580
1581 /* Should not happen, but better check once too many */
1582 if (!sid_check_is_domain(domain_sid)) {
1583 return NT_STATUS_INVALID_HANDLE;
1584 }
1585
1586 for (i = 0; i < num_rids; i++) {
1587 const char *name;
1588
1589 if (lookup_global_sam_rid(names, rids[i], &name, &attrs[i],
1590 NULL)) {
1591 if (name == NULL) {
1592 return NT_STATUS_NO_MEMORY;
1593 }
1594 names[i] = name;
1595 DEBUG(5,("lookup_rids: %s:%d\n", names[i], attrs[i]));
1596 have_mapped = True;
1597 } else {
1598 have_unmapped = True;
1599 attrs[i] = SID_NAME_UNKNOWN;
1600 }
1601 }
1602
1603 done:
1604
1605 result = NT_STATUS_NONE_MAPPED;
1606
1607 if (have_mapped)
1608 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1609
1610 return result;
1611}
1612
1613#if 0
1614static NTSTATUS pdb_default_lookup_names(struct pdb_methods *methods,
1615 const DOM_SID *domain_sid,
1616 int num_names,
1617 const char **names,
1618 uint32 *rids,
1619 enum lsa_SidType *attrs)
1620{
1621 int i;
1622 NTSTATUS result;
1623 bool have_mapped = False;
1624 bool have_unmapped = False;
1625
1626 if (sid_check_is_builtin(domain_sid)) {
1627
1628 for (i=0; i<num_names; i++) {
1629 uint32 rid;
1630
1631 if (lookup_builtin_name(names[i], &rid)) {
1632 attrs[i] = SID_NAME_ALIAS;
1633 rids[i] = rid;
1634 DEBUG(5,("lookup_rids: %s:%d\n",
1635 names[i], attrs[i]));
1636 have_mapped = True;
1637 } else {
1638 have_unmapped = True;
1639 attrs[i] = SID_NAME_UNKNOWN;
1640 }
1641 }
1642 goto done;
1643 }
1644
1645 /* Should not happen, but better check once too many */
1646 if (!sid_check_is_domain(domain_sid)) {
1647 return NT_STATUS_INVALID_HANDLE;
1648 }
1649
1650 for (i = 0; i < num_names; i++) {
1651 if (lookup_global_sam_name(names[i], 0, &rids[i], &attrs[i])) {
1652 DEBUG(5,("lookup_names: %s-> %d:%d\n", names[i],
1653 rids[i], attrs[i]));
1654 have_mapped = True;
1655 } else {
1656 have_unmapped = True;
1657 attrs[i] = SID_NAME_UNKNOWN;
1658 }
1659 }
1660
1661 done:
1662
1663 result = NT_STATUS_NONE_MAPPED;
1664
1665 if (have_mapped)
1666 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1667
1668 return result;
1669}
1670#endif
1671
1672static int pdb_search_destructor(struct pdb_search *search)
1673{
1674 if ((!search->search_ended) && (search->search_end != NULL)) {
1675 search->search_end(search);
1676 }
1677 return 0;
1678}
1679
1680struct pdb_search *pdb_search_init(TALLOC_CTX *mem_ctx,
1681 enum pdb_search_type type)
1682{
1683 struct pdb_search *result;
1684
1685 result = talloc(mem_ctx, struct pdb_search);
1686 if (result == NULL) {
1687 DEBUG(0, ("talloc failed\n"));
1688 return NULL;
1689 }
1690
1691 result->type = type;
1692 result->cache = NULL;
1693 result->num_entries = 0;
1694 result->cache_size = 0;
1695 result->search_ended = False;
1696 result->search_end = NULL;
1697
1698 /* Segfault appropriately if not initialized */
1699 result->next_entry = NULL;
1700 result->search_end = NULL;
1701
1702 talloc_set_destructor(result, pdb_search_destructor);
1703
1704 return result;
1705}
1706
1707static void fill_displayentry(TALLOC_CTX *mem_ctx, uint32 rid,
1708 uint16 acct_flags,
1709 const char *account_name,
1710 const char *fullname,
1711 const char *description,
1712 struct samr_displayentry *entry)
1713{
1714 entry->rid = rid;
1715 entry->acct_flags = acct_flags;
1716
1717 if (account_name != NULL)
1718 entry->account_name = talloc_strdup(mem_ctx, account_name);
1719 else
1720 entry->account_name = "";
1721
1722 if (fullname != NULL)
1723 entry->fullname = talloc_strdup(mem_ctx, fullname);
1724 else
1725 entry->fullname = "";
1726
1727 if (description != NULL)
1728 entry->description = talloc_strdup(mem_ctx, description);
1729 else
1730 entry->description = "";
1731}
1732
1733struct group_search {
1734 GROUP_MAP *groups;
1735 size_t num_groups, current_group;
1736};
1737
1738static bool next_entry_groups(struct pdb_search *s,
1739 struct samr_displayentry *entry)
1740{
1741 struct group_search *state = (struct group_search *)s->private_data;
1742 uint32 rid;
1743 GROUP_MAP *map = &state->groups[state->current_group];
1744
1745 if (state->current_group == state->num_groups)
1746 return False;
1747
1748 sid_peek_rid(&map->sid, &rid);
1749
1750 fill_displayentry(s, rid, 0, map->nt_name, NULL, map->comment, entry);
1751
1752 state->current_group += 1;
1753 return True;
1754}
1755
1756static void search_end_groups(struct pdb_search *search)
1757{
1758 struct group_search *state =
1759 (struct group_search *)search->private_data;
1760 SAFE_FREE(state->groups);
1761}
1762
1763static bool pdb_search_grouptype(struct pdb_search *search,
1764 const DOM_SID *sid, enum lsa_SidType type)
1765{
1766 struct group_search *state;
1767
1768 state = talloc(search, struct group_search);
1769 if (state == NULL) {
1770 DEBUG(0, ("talloc failed\n"));
1771 return False;
1772 }
1773
1774 if (!pdb_enum_group_mapping(sid, type, &state->groups, &state->num_groups,
1775 True)) {
1776 DEBUG(0, ("Could not enum groups\n"));
1777 return False;
1778 }
1779
1780 state->current_group = 0;
1781 search->private_data = state;
1782 search->next_entry = next_entry_groups;
1783 search->search_end = search_end_groups;
1784 return True;
1785}
1786
1787static bool pdb_default_search_groups(struct pdb_methods *methods,
1788 struct pdb_search *search)
1789{
1790 return pdb_search_grouptype(search, get_global_sam_sid(), SID_NAME_DOM_GRP);
1791}
1792
1793static bool pdb_default_search_aliases(struct pdb_methods *methods,
1794 struct pdb_search *search,
1795 const DOM_SID *sid)
1796{
1797
1798 return pdb_search_grouptype(search, sid, SID_NAME_ALIAS);
1799}
1800
1801static struct samr_displayentry *pdb_search_getentry(struct pdb_search *search,
1802 uint32 idx)
1803{
1804 if (idx < search->num_entries)
1805 return &search->cache[idx];
1806
1807 if (search->search_ended)
1808 return NULL;
1809
1810 while (idx >= search->num_entries) {
1811 struct samr_displayentry entry;
1812
1813 if (!search->next_entry(search, &entry)) {
1814 search->search_end(search);
1815 search->search_ended = True;
1816 break;
1817 }
1818
1819 ADD_TO_LARGE_ARRAY(search, struct samr_displayentry,
1820 entry, &search->cache, &search->num_entries,
1821 &search->cache_size);
1822 }
1823
1824 return (search->num_entries > idx) ? &search->cache[idx] : NULL;
1825}
1826
1827struct pdb_search *pdb_search_users(TALLOC_CTX *mem_ctx, uint32 acct_flags)
1828{
1829 struct pdb_methods *pdb = pdb_get_methods();
1830 struct pdb_search *result;
1831
1832 result = pdb_search_init(mem_ctx, PDB_USER_SEARCH);
1833 if (result == NULL) {
1834 return NULL;
1835 }
1836
1837 if (!pdb->search_users(pdb, result, acct_flags)) {
1838 TALLOC_FREE(result);
1839 return NULL;
1840 }
1841 return result;
1842}
1843
1844struct pdb_search *pdb_search_groups(TALLOC_CTX *mem_ctx)
1845{
1846 struct pdb_methods *pdb = pdb_get_methods();
1847 struct pdb_search *result;
1848
1849 result = pdb_search_init(mem_ctx, PDB_GROUP_SEARCH);
1850 if (result == NULL) {
1851 return NULL;
1852 }
1853
1854 if (!pdb->search_groups(pdb, result)) {
1855 TALLOC_FREE(result);
1856 return NULL;
1857 }
1858 return result;
1859}
1860
1861struct pdb_search *pdb_search_aliases(TALLOC_CTX *mem_ctx, const DOM_SID *sid)
1862{
1863 struct pdb_methods *pdb = pdb_get_methods();
1864 struct pdb_search *result;
1865
1866 if (pdb == NULL) return NULL;
1867
1868 result = pdb_search_init(mem_ctx, PDB_ALIAS_SEARCH);
1869 if (result == NULL) {
1870 return NULL;
1871 }
1872
1873 if (!pdb->search_aliases(pdb, result, sid)) {
1874 TALLOC_FREE(result);
1875 return NULL;
1876 }
1877 return result;
1878}
1879
1880uint32 pdb_search_entries(struct pdb_search *search,
1881 uint32 start_idx, uint32 max_entries,
1882 struct samr_displayentry **result)
1883{
1884 struct samr_displayentry *end_entry;
1885 uint32 end_idx = start_idx+max_entries-1;
1886
1887 /* The first entry needs to be searched after the last. Otherwise the
1888 * first entry might have moved due to a realloc during the search for
1889 * the last entry. */
1890
1891 end_entry = pdb_search_getentry(search, end_idx);
1892 *result = pdb_search_getentry(search, start_idx);
1893
1894 if (end_entry != NULL)
1895 return max_entries;
1896
1897 if (start_idx >= search->num_entries)
1898 return 0;
1899
1900 return search->num_entries - start_idx;
1901}
1902
1903/*******************************************************************
1904 trustdom methods
1905 *******************************************************************/
1906
1907bool pdb_get_trusteddom_pw(const char *domain, char** pwd, DOM_SID *sid,
1908 time_t *pass_last_set_time)
1909{
1910 struct pdb_methods *pdb = pdb_get_methods();
1911 return pdb->get_trusteddom_pw(pdb, domain, pwd, sid,
1912 pass_last_set_time);
1913}
1914
1915bool pdb_set_trusteddom_pw(const char* domain, const char* pwd,
1916 const DOM_SID *sid)
1917{
1918 struct pdb_methods *pdb = pdb_get_methods();
1919 return pdb->set_trusteddom_pw(pdb, domain, pwd, sid);
1920}
1921
1922bool pdb_del_trusteddom_pw(const char *domain)
1923{
1924 struct pdb_methods *pdb = pdb_get_methods();
1925 return pdb->del_trusteddom_pw(pdb, domain);
1926}
1927
1928NTSTATUS pdb_enum_trusteddoms(TALLOC_CTX *mem_ctx, uint32 *num_domains,
1929 struct trustdom_info ***domains)
1930{
1931 struct pdb_methods *pdb = pdb_get_methods();
1932 return pdb->enum_trusteddoms(pdb, mem_ctx, num_domains, domains);
1933}
1934
1935/*******************************************************************
1936 the defaults for trustdom methods:
1937 these simply call the original passdb/secrets.c actions,
1938 to be replaced by pdb_ldap.
1939 *******************************************************************/
1940
1941static bool pdb_default_get_trusteddom_pw(struct pdb_methods *methods,
1942 const char *domain,
1943 char** pwd,
1944 DOM_SID *sid,
1945 time_t *pass_last_set_time)
1946{
1947 return secrets_fetch_trusted_domain_password(domain, pwd,
1948 sid, pass_last_set_time);
1949
1950}
1951
1952static bool pdb_default_set_trusteddom_pw(struct pdb_methods *methods,
1953 const char* domain,
1954 const char* pwd,
1955 const DOM_SID *sid)
1956{
1957 return secrets_store_trusted_domain_password(domain, pwd, sid);
1958}
1959
1960static bool pdb_default_del_trusteddom_pw(struct pdb_methods *methods,
1961 const char *domain)
1962{
1963 return trusted_domain_password_delete(domain);
1964}
1965
1966static NTSTATUS pdb_default_enum_trusteddoms(struct pdb_methods *methods,
1967 TALLOC_CTX *mem_ctx,
1968 uint32 *num_domains,
1969 struct trustdom_info ***domains)
1970{
1971 return secrets_trusted_domains(mem_ctx, num_domains, domains);
1972}
1973
1974static struct pdb_domain_info *pdb_default_get_domain_info(
1975 struct pdb_methods *m, TALLOC_CTX *mem_ctx)
1976{
1977 return NULL;
1978}
1979
1980/*******************************************************************
1981 Create a pdb_methods structure and initialize it with the default
1982 operations. In this way a passdb module can simply implement
1983 the functionality it cares about. However, normally this is done
1984 in groups of related functions.
1985*******************************************************************/
1986
1987NTSTATUS make_pdb_method( struct pdb_methods **methods )
1988{
1989 /* allocate memory for the structure as its own talloc CTX */
1990
1991 *methods = talloc_zero(talloc_autofree_context(), struct pdb_methods);
1992 if (*methods == NULL) {
1993 return NT_STATUS_NO_MEMORY;
1994 }
1995
1996 (*methods)->get_domain_info = pdb_default_get_domain_info;
1997 (*methods)->getsampwnam = pdb_default_getsampwnam;
1998 (*methods)->getsampwsid = pdb_default_getsampwsid;
1999 (*methods)->create_user = pdb_default_create_user;
2000 (*methods)->delete_user = pdb_default_delete_user;
2001 (*methods)->add_sam_account = pdb_default_add_sam_account;
2002 (*methods)->update_sam_account = pdb_default_update_sam_account;
2003 (*methods)->delete_sam_account = pdb_default_delete_sam_account;
2004 (*methods)->rename_sam_account = pdb_default_rename_sam_account;
2005 (*methods)->update_login_attempts = pdb_default_update_login_attempts;
2006
2007 (*methods)->getgrsid = pdb_default_getgrsid;
2008 (*methods)->getgrgid = pdb_default_getgrgid;
2009 (*methods)->getgrnam = pdb_default_getgrnam;
2010 (*methods)->create_dom_group = pdb_default_create_dom_group;
2011 (*methods)->delete_dom_group = pdb_default_delete_dom_group;
2012 (*methods)->add_group_mapping_entry = pdb_default_add_group_mapping_entry;
2013 (*methods)->update_group_mapping_entry = pdb_default_update_group_mapping_entry;
2014 (*methods)->delete_group_mapping_entry = pdb_default_delete_group_mapping_entry;
2015 (*methods)->enum_group_mapping = pdb_default_enum_group_mapping;
2016 (*methods)->enum_group_members = pdb_default_enum_group_members;
2017 (*methods)->enum_group_memberships = pdb_default_enum_group_memberships;
2018 (*methods)->set_unix_primary_group = pdb_default_set_unix_primary_group;
2019 (*methods)->add_groupmem = pdb_default_add_groupmem;
2020 (*methods)->del_groupmem = pdb_default_del_groupmem;
2021 (*methods)->create_alias = pdb_default_create_alias;
2022 (*methods)->delete_alias = pdb_default_delete_alias;
2023 (*methods)->get_aliasinfo = pdb_default_get_aliasinfo;
2024 (*methods)->set_aliasinfo = pdb_default_set_aliasinfo;
2025 (*methods)->add_aliasmem = pdb_default_add_aliasmem;
2026 (*methods)->del_aliasmem = pdb_default_del_aliasmem;
2027 (*methods)->enum_aliasmem = pdb_default_enum_aliasmem;
2028 (*methods)->enum_alias_memberships = pdb_default_alias_memberships;
2029 (*methods)->lookup_rids = pdb_default_lookup_rids;
2030 (*methods)->get_account_policy = pdb_default_get_account_policy;
2031 (*methods)->set_account_policy = pdb_default_set_account_policy;
2032 (*methods)->get_seq_num = pdb_default_get_seq_num;
2033 (*methods)->uid_to_sid = pdb_default_uid_to_sid;
2034 (*methods)->gid_to_sid = pdb_default_gid_to_sid;
2035 (*methods)->sid_to_id = pdb_default_sid_to_id;
2036
2037 (*methods)->search_groups = pdb_default_search_groups;
2038 (*methods)->search_aliases = pdb_default_search_aliases;
2039
2040 (*methods)->get_trusteddom_pw = pdb_default_get_trusteddom_pw;
2041 (*methods)->set_trusteddom_pw = pdb_default_set_trusteddom_pw;
2042 (*methods)->del_trusteddom_pw = pdb_default_del_trusteddom_pw;
2043 (*methods)->enum_trusteddoms = pdb_default_enum_trusteddoms;
2044
2045 return NT_STATUS_OK;
2046}
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