source: trunk-3.0/source/passdb/pdb_interface.c@ 101

Last change on this file since 101 was 26, checked in by Paul Smedley, 18 years ago

Updated source to 3.0.25rc1
File size: 52.9 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 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
31static struct samu *csamuser = NULL;
32
33static_decl_pdb;
34
35static struct pdb_init_function_entry *backends = NULL;
36
37static void lazy_initialize_passdb(void)
38{
39 static BOOL initialized = False;
40 if(initialized) {
41 return;
42 }
43 static_init_pdb;
44 initialized = True;
45}
46
47static BOOL lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
48 const char **name,
49 enum lsa_SidType *psid_name_use,
50 union unid_t *unix_id);
51
52NTSTATUS smb_register_passdb(int version, const char *name, pdb_init_function init)
53{
54 struct pdb_init_function_entry *entry = backends;
55
56 if(version != PASSDB_INTERFACE_VERSION) {
57 DEBUG(0,("Can't register passdb backend!\n"
58 "You tried to register a passdb module with PASSDB_INTERFACE_VERSION %d, "
59 "while this version of samba uses version %d\n",
60 version,PASSDB_INTERFACE_VERSION));
61 return NT_STATUS_OBJECT_TYPE_MISMATCH;
62 }
63
64 if (!name || !init) {
65 return NT_STATUS_INVALID_PARAMETER;
66 }
67
68 DEBUG(5,("Attempting to register passdb backend %s\n", name));
69
70 /* Check for duplicates */
71 if (pdb_find_backend_entry(name)) {
72 DEBUG(0,("There already is a passdb backend registered with the name %s!\n", name));
73 return NT_STATUS_OBJECT_NAME_COLLISION;
74 }
75
76 entry = SMB_XMALLOC_P(struct pdb_init_function_entry);
77 entry->name = smb_xstrdup(name);
78 entry->init = init;
79
80 DLIST_ADD(backends, entry);
81 DEBUG(5,("Successfully added passdb backend '%s'\n", name));
82 return NT_STATUS_OK;
83}
84
85struct pdb_init_function_entry *pdb_find_backend_entry(const char *name)
86{
87 struct pdb_init_function_entry *entry = backends;
88
89 while(entry) {
90 if (strcmp(entry->name, name)==0) return entry;
91 entry = entry->next;
92 }
93
94 return NULL;
95}
96
97/******************************************************************
98 Make a pdb_methods from scratch
99 *******************************************************************/
100
101NTSTATUS make_pdb_method_name(struct pdb_methods **methods, const char *selected)
102{
103 char *module_name = smb_xstrdup(selected);
104 char *module_location = NULL, *p;
105 struct pdb_init_function_entry *entry;
106 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
107
108 lazy_initialize_passdb();
109
110 p = strchr(module_name, ':');
111
112 if (p) {
113 *p = 0;
114 module_location = p+1;
115 trim_char(module_location, ' ', ' ');
116 }
117
118 trim_char(module_name, ' ', ' ');
119
120
121 DEBUG(5,("Attempting to find an passdb backend to match %s (%s)\n", selected, module_name));
122
123 entry = pdb_find_backend_entry(module_name);
124
125 /* Try to find a module that contains this module */
126 if (!entry) {
127 DEBUG(2,("No builtin backend found, trying to load plugin\n"));
128 if(NT_STATUS_IS_OK(smb_probe_module("pdb", module_name)) && !(entry = pdb_find_backend_entry(module_name))) {
129 DEBUG(0,("Plugin is available, but doesn't register passdb backend %s\n", module_name));
130 SAFE_FREE(module_name);
131 return NT_STATUS_UNSUCCESSFUL;
132 }
133 }
134
135 /* No such backend found */
136 if(!entry) {
137 DEBUG(0,("No builtin nor plugin backend for %s found\n", module_name));
138 SAFE_FREE(module_name);
139 return NT_STATUS_INVALID_PARAMETER;
140 }
141
142 DEBUG(5,("Found pdb backend %s\n", module_name));
143
144 if ( !NT_STATUS_IS_OK( nt_status = entry->init(methods, module_location) ) ) {
145 DEBUG(0,("pdb backend %s did not correctly init (error was %s)\n",
146 selected, nt_errstr(nt_status)));
147 SAFE_FREE(module_name);
148 return nt_status;
149 }
150
151 SAFE_FREE(module_name);
152
153 DEBUG(5,("pdb backend %s has a valid init\n", selected));
154
155 return nt_status;
156}
157
158/******************************************************************
159 Return an already initialised pdn_methods structure
160*******************************************************************/
161
162static struct pdb_methods *pdb_get_methods_reload( BOOL reload )
163{
164 static struct pdb_methods *pdb = NULL;
165
166 if ( pdb && reload ) {
167 pdb->free_private_data( &(pdb->private_data) );
168 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
169 pstring msg;
170 slprintf(msg, sizeof(msg)-1, "pdb_get_methods_reload: failed to get pdb methods for backend %s\n",
171 lp_passdb_backend() );
172 smb_panic(msg);
173 }
174 }
175
176 if ( !pdb ) {
177 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
178 pstring msg;
179 slprintf(msg, sizeof(msg)-1, "pdb_get_methods_reload: failed to get pdb methods for backend %s\n",
180 lp_passdb_backend() );
181 smb_panic(msg);
182 }
183 }
184
185 return pdb;
186}
187
188static struct pdb_methods *pdb_get_methods(void)
189{
190 return pdb_get_methods_reload(False);
191}
192
193/******************************************************************
194 Backward compatibility functions for the original passdb interface
195*******************************************************************/
196
197BOOL pdb_setsampwent(BOOL update, uint16 acb_mask)
198{
199 struct pdb_methods *pdb = pdb_get_methods();
200 return NT_STATUS_IS_OK(pdb->setsampwent(pdb, update, acb_mask));
201}
202
203void pdb_endsampwent(void)
204{
205 struct pdb_methods *pdb = pdb_get_methods();
206 pdb->endsampwent(pdb);
207}
208
209BOOL pdb_getsampwent(struct samu *user)
210{
211 struct pdb_methods *pdb = pdb_get_methods();
212
213 if ( !NT_STATUS_IS_OK(pdb->getsampwent(pdb, user) ) ) {
214 return False;
215 }
216
217 return True;
218}
219
220BOOL pdb_getsampwnam(struct samu *sam_acct, const char *username)
221{
222 struct pdb_methods *pdb = pdb_get_methods();
223
224 if (!NT_STATUS_IS_OK(pdb->getsampwnam(pdb, sam_acct, username))) {
225 return False;
226 }
227
228 if ( csamuser ) {
229 TALLOC_FREE(csamuser);
230 }
231
232 csamuser = samu_new( NULL );
233 if (!csamuser) {
234 return False;
235 }
236
237 if (!pdb_copy_sam_account(csamuser, sam_acct)) {
238 TALLOC_FREE(csamuser);
239 return False;
240 }
241
242 return True;
243}
244
245/**********************************************************************
246**********************************************************************/
247
248BOOL guest_user_info( struct samu *user )
249{
250 struct passwd *pwd;
251 NTSTATUS result;
252 const char *guestname = lp_guestaccount();
253
254 if ( !(pwd = getpwnam_alloc( NULL, guestname ) ) ) {
255 DEBUG(0,("guest_user_info: Unable to locate guest account [%s]!\n",
256 guestname));
257 return False;
258 }
259
260 result = samu_set_unix(user, pwd );
261
262 TALLOC_FREE( pwd );
263
264 return NT_STATUS_IS_OK( result );
265}
266
267/**********************************************************************
268**********************************************************************/
269
270BOOL pdb_getsampwsid(struct samu *sam_acct, const DOM_SID *sid)
271{
272 struct pdb_methods *pdb = pdb_get_methods();
273 uint32 rid;
274
275 /* hard code the Guest RID of 501 */
276
277 if ( !sid_peek_check_rid( get_global_sam_sid(), sid, &rid ) )
278 return False;
279
280 if ( rid == DOMAIN_USER_RID_GUEST ) {
281 DEBUG(6,("pdb_getsampwsid: Building guest account\n"));
282 return guest_user_info( sam_acct );
283 }
284
285 /* check the cache first */
286
287 if ( csamuser && sid_equal(sid, pdb_get_user_sid(csamuser) ) )
288 return pdb_copy_sam_account(sam_acct, csamuser);
289
290 return NT_STATUS_IS_OK(pdb->getsampwsid(pdb, sam_acct, sid));
291}
292
293static NTSTATUS pdb_default_create_user(struct pdb_methods *methods,
294 TALLOC_CTX *tmp_ctx, const char *name,
295 uint32 acb_info, uint32 *rid)
296{
297 struct samu *sam_pass;
298 NTSTATUS status;
299 struct passwd *pwd;
300
301 if ((sam_pass = samu_new(tmp_ctx)) == NULL) {
302 return NT_STATUS_NO_MEMORY;
303 }
304
305 if ( !(pwd = Get_Pwnam_alloc(tmp_ctx, name)) ) {
306 pstring add_script;
307 int add_ret;
308 fstring name2;
309
310 if ((acb_info & ACB_NORMAL) && name[strlen(name)-1] != '$') {
311 pstrcpy(add_script, lp_adduser_script());
312 } else {
313 pstrcpy(add_script, lp_addmachine_script());
314 }
315
316 if (add_script[0] == '\0') {
317 DEBUG(3, ("Could not find user %s and no add script "
318 "defined\n", name));
319 return NT_STATUS_NO_SUCH_USER;
320 }
321
322 /* lowercase the username before creating the Unix account for
323 compatibility with previous Samba releases */
324 fstrcpy( name2, name );
325 strlower_m( name2 );
326 all_string_sub(add_script, "%u", name2, sizeof(add_script));
327 add_ret = smbrun(add_script,NULL);
328 DEBUG(add_ret ? 0 : 3, ("_samr_create_user: Running the command `%s' gave %d\n",
329 add_script, add_ret));
330 if (add_ret == 0) {
331 smb_nscd_flush_user_cache();
332 }
333
334#ifdef ENABLE_BUILD_FARM_HACKS
335 if (add_ret != 0) {
336 DEBUG(1, ("Creating a faked user %s for build farm "
337 "purposes\n", name));
338 faked_create_user(name);
339 }
340#endif
341
342 flush_pwnam_cache();
343
344 pwd = Get_Pwnam_alloc(tmp_ctx, name);
345 }
346
347 /* we have a valid SID coming out of this call */
348
349 status = samu_alloc_rid_unix( sam_pass, pwd );
350
351 TALLOC_FREE( pwd );
352
353 if (!NT_STATUS_IS_OK(status)) {
354 DEBUG(3, ("pdb_default_create_user: failed to create a new user structure: %s\n", nt_errstr(status)));
355 return status;
356 }
357
358 if (!sid_peek_check_rid(get_global_sam_sid(),
359 pdb_get_user_sid(sam_pass), rid)) {
360 DEBUG(0, ("Could not get RID of fresh user\n"));
361 return NT_STATUS_INTERNAL_ERROR;
362 }
363
364 /* Use the username case specified in the original request */
365
366 pdb_set_username( sam_pass, name, PDB_SET );
367
368 /* Disable the account on creation, it does not have a reasonable password yet. */
369
370 acb_info |= ACB_DISABLED;
371
372 pdb_set_acct_ctrl(sam_pass, acb_info, PDB_CHANGED);
373
374 status = pdb_add_sam_account(sam_pass);
375
376 TALLOC_FREE(sam_pass);
377
378 return status;
379}
380
381NTSTATUS pdb_create_user(TALLOC_CTX *mem_ctx, const char *name, uint32 flags,
382 uint32 *rid)
383{
384 struct pdb_methods *pdb = pdb_get_methods();
385 return pdb->create_user(pdb, mem_ctx, name, flags, rid);
386}
387
388/****************************************************************************
389 Delete a UNIX user on demand.
390****************************************************************************/
391
392static int smb_delete_user(const char *unix_user)
393{
394 pstring del_script;
395 int ret;
396
397 /* safety check */
398
399 if ( strequal( unix_user, "root" ) ) {
400 DEBUG(0,("smb_delete_user: Refusing to delete local system root account!\n"));
401 return -1;
402 }
403
404 pstrcpy(del_script, lp_deluser_script());
405 if (! *del_script)
406 return -1;
407 all_string_sub(del_script, "%u", unix_user, sizeof(del_script));
408 ret = smbrun(del_script,NULL);
409 flush_pwnam_cache();
410 if (ret == 0) {
411 smb_nscd_flush_user_cache();
412 }
413 DEBUG(ret ? 0 : 3,("smb_delete_user: Running the command `%s' gave %d\n",del_script,ret));
414
415 return ret;
416}
417
418static NTSTATUS pdb_default_delete_user(struct pdb_methods *methods,
419 TALLOC_CTX *mem_ctx,
420 struct samu *sam_acct)
421{
422 NTSTATUS status;
423 fstring username;
424
425 status = pdb_delete_sam_account(sam_acct);
426 if (!NT_STATUS_IS_OK(status)) {
427 return status;
428 }
429
430 /*
431 * Now delete the unix side ....
432 * note: we don't check if the delete really happened as the script is
433 * not necessary present and maybe the sysadmin doesn't want to delete
434 * the unix side
435 */
436
437 /* always lower case the username before handing it off to
438 external scripts */
439
440 fstrcpy( username, pdb_get_username(sam_acct) );
441 strlower_m( username );
442
443 smb_delete_user( username );
444
445 return status;
446}
447
448NTSTATUS pdb_delete_user(TALLOC_CTX *mem_ctx, struct samu *sam_acct)
449{
450 struct pdb_methods *pdb = pdb_get_methods();
451 uid_t uid = -1;
452
453 /* sanity check to make sure we don't delete root */
454
455 if ( !sid_to_uid( pdb_get_user_sid(sam_acct), &uid ) ) {
456 return NT_STATUS_NO_SUCH_USER;
457 }
458
459 if ( uid == 0 ) {
460 return NT_STATUS_ACCESS_DENIED;
461 }
462
463 return pdb->delete_user(pdb, mem_ctx, sam_acct);
464}
465
466NTSTATUS pdb_add_sam_account(struct samu *sam_acct)
467{
468 struct pdb_methods *pdb = pdb_get_methods();
469 return pdb->add_sam_account(pdb, sam_acct);
470}
471
472NTSTATUS pdb_update_sam_account(struct samu *sam_acct)
473{
474 struct pdb_methods *pdb = pdb_get_methods();
475
476 if (csamuser != NULL) {
477 TALLOC_FREE(csamuser);
478 csamuser = NULL;
479 }
480
481 return pdb->update_sam_account(pdb, sam_acct);
482}
483
484NTSTATUS pdb_delete_sam_account(struct samu *sam_acct)
485{
486 struct pdb_methods *pdb = pdb_get_methods();
487
488 if (csamuser != NULL) {
489 TALLOC_FREE(csamuser);
490 csamuser = NULL;
491 }
492
493 return pdb->delete_sam_account(pdb, sam_acct);
494}
495
496NTSTATUS pdb_rename_sam_account(struct samu *oldname, const char *newname)
497{
498 struct pdb_methods *pdb = pdb_get_methods();
499 uid_t uid;
500 NTSTATUS status;
501
502 if (csamuser != NULL) {
503 TALLOC_FREE(csamuser);
504 csamuser = NULL;
505 }
506
507 /* sanity check to make sure we don't rename root */
508
509 if ( !sid_to_uid( pdb_get_user_sid(oldname), &uid ) ) {
510 return NT_STATUS_NO_SUCH_USER;
511 }
512
513 if ( uid == 0 ) {
514 return NT_STATUS_ACCESS_DENIED;
515 }
516
517 status = pdb->rename_sam_account(pdb, oldname, newname);
518
519 /* always flush the cache here just to be safe */
520 flush_pwnam_cache();
521
522 return status;
523}
524
525NTSTATUS pdb_update_login_attempts(struct samu *sam_acct, BOOL success)
526{
527 struct pdb_methods *pdb = pdb_get_methods();
528 return pdb->update_login_attempts(pdb, sam_acct, success);
529}
530
531BOOL pdb_getgrsid(GROUP_MAP *map, DOM_SID sid)
532{
533 struct pdb_methods *pdb = pdb_get_methods();
534 return NT_STATUS_IS_OK(pdb->getgrsid(pdb, map, sid));
535}
536
537BOOL pdb_getgrgid(GROUP_MAP *map, gid_t gid)
538{
539 struct pdb_methods *pdb = pdb_get_methods();
540 return NT_STATUS_IS_OK(pdb->getgrgid(pdb, map, gid));
541}
542
543BOOL pdb_getgrnam(GROUP_MAP *map, const char *name)
544{
545 struct pdb_methods *pdb = pdb_get_methods();
546 return NT_STATUS_IS_OK(pdb->getgrnam(pdb, map, name));
547}
548
549static NTSTATUS pdb_default_create_dom_group(struct pdb_methods *methods,
550 TALLOC_CTX *mem_ctx,
551 const char *name,
552 uint32 *rid)
553{
554 DOM_SID group_sid;
555 struct group *grp;
556
557 grp = getgrnam(name);
558
559 if (grp == NULL) {
560 gid_t gid;
561
562 if (smb_create_group(name, &gid) != 0) {
563 return NT_STATUS_ACCESS_DENIED;
564 }
565
566 grp = getgrgid(gid);
567 }
568
569 if (grp == NULL) {
570 return NT_STATUS_ACCESS_DENIED;
571 }
572
573 if (pdb_rid_algorithm()) {
574 *rid = algorithmic_pdb_gid_to_group_rid( grp->gr_gid );
575 } else {
576 if (!pdb_new_rid(rid)) {
577 return NT_STATUS_ACCESS_DENIED;
578 }
579 }
580
581 sid_compose(&group_sid, get_global_sam_sid(), *rid);
582
583 return add_initial_entry(grp->gr_gid, sid_string_static(&group_sid),
584 SID_NAME_DOM_GRP, name, NULL);
585}
586
587NTSTATUS pdb_create_dom_group(TALLOC_CTX *mem_ctx, const char *name,
588 uint32 *rid)
589{
590 struct pdb_methods *pdb = pdb_get_methods();
591 return pdb->create_dom_group(pdb, mem_ctx, name, rid);
592}
593
594static NTSTATUS pdb_default_delete_dom_group(struct pdb_methods *methods,
595 TALLOC_CTX *mem_ctx,
596 uint32 rid)
597{
598 DOM_SID group_sid;
599 GROUP_MAP map;
600 NTSTATUS status;
601 struct group *grp;
602 const char *grp_name;
603
604 sid_compose(&group_sid, get_global_sam_sid(), rid);
605
606 if (!get_domain_group_from_sid(group_sid, &map)) {
607 DEBUG(10, ("Could not find group for rid %d\n", rid));
608 return NT_STATUS_NO_SUCH_GROUP;
609 }
610
611 /* We need the group name for the smb_delete_group later on */
612
613 if (map.gid == (gid_t)-1) {
614 return NT_STATUS_NO_SUCH_GROUP;
615 }
616
617 grp = getgrgid(map.gid);
618 if (grp == NULL) {
619 return NT_STATUS_NO_SUCH_GROUP;
620 }
621
622 /* Copy the name, no idea what pdb_delete_group_mapping_entry does.. */
623
624 grp_name = talloc_strdup(mem_ctx, grp->gr_name);
625 if (grp_name == NULL) {
626 return NT_STATUS_NO_MEMORY;
627 }
628
629 status = pdb_delete_group_mapping_entry(group_sid);
630
631 if (!NT_STATUS_IS_OK(status)) {
632 return status;
633 }
634
635 /* Don't check the result of smb_delete_group */
636
637 smb_delete_group(grp_name);
638
639 return NT_STATUS_OK;
640}
641
642NTSTATUS pdb_delete_dom_group(TALLOC_CTX *mem_ctx, uint32 rid)
643{
644 struct pdb_methods *pdb = pdb_get_methods();
645 return pdb->delete_dom_group(pdb, mem_ctx, rid);
646}
647
648NTSTATUS pdb_add_group_mapping_entry(GROUP_MAP *map)
649{
650 struct pdb_methods *pdb = pdb_get_methods();
651 return pdb->add_group_mapping_entry(pdb, map);
652}
653
654NTSTATUS pdb_update_group_mapping_entry(GROUP_MAP *map)
655{
656 struct pdb_methods *pdb = pdb_get_methods();
657 return pdb->update_group_mapping_entry(pdb, map);
658}
659
660NTSTATUS pdb_delete_group_mapping_entry(DOM_SID sid)
661{
662 struct pdb_methods *pdb = pdb_get_methods();
663 return pdb->delete_group_mapping_entry(pdb, sid);
664}
665
666BOOL pdb_enum_group_mapping(const DOM_SID *sid, enum lsa_SidType sid_name_use, GROUP_MAP **pp_rmap,
667 size_t *p_num_entries, BOOL unix_only)
668{
669 struct pdb_methods *pdb = pdb_get_methods();
670 return NT_STATUS_IS_OK(pdb-> enum_group_mapping(pdb, sid, sid_name_use,
671 pp_rmap, p_num_entries, unix_only));
672}
673
674NTSTATUS pdb_enum_group_members(TALLOC_CTX *mem_ctx,
675 const DOM_SID *sid,
676 uint32 **pp_member_rids,
677 size_t *p_num_members)
678{
679 struct pdb_methods *pdb = pdb_get_methods();
680 NTSTATUS result;
681
682 result = pdb->enum_group_members(pdb, mem_ctx,
683 sid, pp_member_rids, p_num_members);
684
685 /* special check for rid 513 */
686
687 if ( !NT_STATUS_IS_OK( result ) ) {
688 uint32 rid;
689
690 sid_peek_rid( sid, &rid );
691
692 if ( rid == DOMAIN_GROUP_RID_USERS ) {
693 *p_num_members = 0;
694 *pp_member_rids = NULL;
695
696 return NT_STATUS_OK;
697 }
698 }
699
700 return result;
701}
702
703NTSTATUS pdb_enum_group_memberships(TALLOC_CTX *mem_ctx, struct samu *user,
704 DOM_SID **pp_sids, gid_t **pp_gids,
705 size_t *p_num_groups)
706{
707 struct pdb_methods *pdb = pdb_get_methods();
708 return pdb->enum_group_memberships(
709 pdb, mem_ctx, user,
710 pp_sids, pp_gids, p_num_groups);
711}
712
713static NTSTATUS pdb_default_set_unix_primary_group(struct pdb_methods *methods,
714 TALLOC_CTX *mem_ctx,
715 struct samu *sampass)
716{
717 struct group *grp;
718 gid_t gid;
719
720 if (!sid_to_gid(pdb_get_group_sid(sampass), &gid) ||
721 (grp = getgrgid(gid)) == NULL) {
722 return NT_STATUS_INVALID_PRIMARY_GROUP;
723 }
724
725 if (smb_set_primary_group(grp->gr_name,
726 pdb_get_username(sampass)) != 0) {
727 return NT_STATUS_ACCESS_DENIED;
728 }
729
730 return NT_STATUS_OK;
731}
732
733NTSTATUS pdb_set_unix_primary_group(TALLOC_CTX *mem_ctx, struct samu *user)
734{
735 struct pdb_methods *pdb = pdb_get_methods();
736 return pdb->set_unix_primary_group(pdb, mem_ctx, user);
737}
738
739/*
740 * Helper function to see whether a user is in a group. We can't use
741 * user_in_group_sid here because this creates dependencies only smbd can
742 * fulfil.
743 */
744
745static BOOL pdb_user_in_group(TALLOC_CTX *mem_ctx, struct samu *account,
746 const DOM_SID *group_sid)
747{
748 DOM_SID *sids;
749 gid_t *gids;
750 size_t i, num_groups;
751
752 if (!NT_STATUS_IS_OK(pdb_enum_group_memberships(mem_ctx, account,
753 &sids, &gids,
754 &num_groups))) {
755 return False;
756 }
757
758 for (i=0; i<num_groups; i++) {
759 if (sid_equal(group_sid, &sids[i])) {
760 return True;
761 }
762 }
763 return False;
764}
765
766static NTSTATUS pdb_default_add_groupmem(struct pdb_methods *methods,
767 TALLOC_CTX *mem_ctx,
768 uint32 group_rid,
769 uint32 member_rid)
770{
771 DOM_SID group_sid, member_sid;
772 struct samu *account = NULL;
773 GROUP_MAP map;
774 struct group *grp;
775 struct passwd *pwd;
776 const char *group_name;
777 uid_t uid;
778
779 sid_compose(&group_sid, get_global_sam_sid(), group_rid);
780 sid_compose(&member_sid, get_global_sam_sid(), member_rid);
781
782 if (!get_domain_group_from_sid(group_sid, &map) ||
783 (map.gid == (gid_t)-1) ||
784 ((grp = getgrgid(map.gid)) == NULL)) {
785 return NT_STATUS_NO_SUCH_GROUP;
786 }
787
788 group_name = talloc_strdup(mem_ctx, grp->gr_name);
789 if (group_name == NULL) {
790 return NT_STATUS_NO_MEMORY;
791 }
792
793 if ( !(account = samu_new( NULL )) ) {
794 return NT_STATUS_NO_MEMORY;
795 }
796
797 if (!pdb_getsampwsid(account, &member_sid) ||
798 !sid_to_uid(&member_sid, &uid) ||
799 ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
800 return NT_STATUS_NO_SUCH_USER;
801 }
802
803 if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
804 return NT_STATUS_MEMBER_IN_GROUP;
805 }
806
807 /*
808 * ok, the group exist, the user exist, the user is not in the group,
809 * we can (finally) add it to the group !
810 */
811
812 smb_add_user_group(group_name, pwd->pw_name);
813
814 if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
815 return NT_STATUS_ACCESS_DENIED;
816 }
817
818 return NT_STATUS_OK;
819}
820
821NTSTATUS pdb_add_groupmem(TALLOC_CTX *mem_ctx, uint32 group_rid,
822 uint32 member_rid)
823{
824 struct pdb_methods *pdb = pdb_get_methods();
825 return pdb->add_groupmem(pdb, mem_ctx, group_rid, member_rid);
826}
827
828static NTSTATUS pdb_default_del_groupmem(struct pdb_methods *methods,
829 TALLOC_CTX *mem_ctx,
830 uint32 group_rid,
831 uint32 member_rid)
832{
833 DOM_SID group_sid, member_sid;
834 struct samu *account = NULL;
835 GROUP_MAP map;
836 struct group *grp;
837 struct passwd *pwd;
838 const char *group_name;
839 uid_t uid;
840
841 sid_compose(&group_sid, get_global_sam_sid(), group_rid);
842 sid_compose(&member_sid, get_global_sam_sid(), member_rid);
843
844 if (!get_domain_group_from_sid(group_sid, &map) ||
845 (map.gid == (gid_t)-1) ||
846 ((grp = getgrgid(map.gid)) == NULL)) {
847 return NT_STATUS_NO_SUCH_GROUP;
848 }
849
850 group_name = talloc_strdup(mem_ctx, grp->gr_name);
851 if (group_name == NULL) {
852 return NT_STATUS_NO_MEMORY;
853 }
854
855 if ( !(account = samu_new( NULL )) ) {
856 return NT_STATUS_NO_MEMORY;
857 }
858
859 if (!pdb_getsampwsid(account, &member_sid) ||
860 !sid_to_uid(&member_sid, &uid) ||
861 ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
862 return NT_STATUS_NO_SUCH_USER;
863 }
864
865 if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
866 return NT_STATUS_MEMBER_NOT_IN_GROUP;
867 }
868
869 /*
870 * ok, the group exist, the user exist, the user is in the group,
871 * we can (finally) delete it from the group!
872 */
873
874 smb_delete_user_group(group_name, pwd->pw_name);
875
876 if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
877 return NT_STATUS_ACCESS_DENIED;
878 }
879
880 return NT_STATUS_OK;
881}
882
883NTSTATUS pdb_del_groupmem(TALLOC_CTX *mem_ctx, uint32 group_rid,
884 uint32 member_rid)
885{
886 struct pdb_methods *pdb = pdb_get_methods();
887 return pdb->del_groupmem(pdb, mem_ctx, group_rid, member_rid);
888}
889
890BOOL pdb_find_alias(const char *name, DOM_SID *sid)
891{
892 struct pdb_methods *pdb = pdb_get_methods();
893 return NT_STATUS_IS_OK(pdb->find_alias(pdb, name, sid));
894}
895
896NTSTATUS pdb_create_alias(const char *name, uint32 *rid)
897{
898 struct pdb_methods *pdb = pdb_get_methods();
899 return pdb->create_alias(pdb, name, rid);
900}
901
902BOOL pdb_delete_alias(const DOM_SID *sid)
903{
904 struct pdb_methods *pdb = pdb_get_methods();
905 return NT_STATUS_IS_OK(pdb->delete_alias(pdb, sid));
906
907}
908
909BOOL pdb_get_aliasinfo(const DOM_SID *sid, struct acct_info *info)
910{
911 struct pdb_methods *pdb = pdb_get_methods();
912 return NT_STATUS_IS_OK(pdb->get_aliasinfo(pdb, sid, info));
913}
914
915BOOL pdb_set_aliasinfo(const DOM_SID *sid, struct acct_info *info)
916{
917 struct pdb_methods *pdb = pdb_get_methods();
918 return NT_STATUS_IS_OK(pdb->set_aliasinfo(pdb, sid, info));
919}
920
921NTSTATUS pdb_add_aliasmem(const DOM_SID *alias, const DOM_SID *member)
922{
923 struct pdb_methods *pdb = pdb_get_methods();
924 return pdb->add_aliasmem(pdb, alias, member);
925}
926
927NTSTATUS pdb_del_aliasmem(const DOM_SID *alias, const DOM_SID *member)
928{
929 struct pdb_methods *pdb = pdb_get_methods();
930 return pdb->del_aliasmem(pdb, alias, member);
931}
932
933NTSTATUS pdb_enum_aliasmem(const DOM_SID *alias,
934 DOM_SID **pp_members, size_t *p_num_members)
935{
936 struct pdb_methods *pdb = pdb_get_methods();
937 return pdb->enum_aliasmem(pdb, alias, pp_members, p_num_members);
938}
939
940NTSTATUS pdb_enum_alias_memberships(TALLOC_CTX *mem_ctx,
941 const DOM_SID *domain_sid,
942 const DOM_SID *members, size_t num_members,
943 uint32 **pp_alias_rids,
944 size_t *p_num_alias_rids)
945{
946 struct pdb_methods *pdb = pdb_get_methods();
947 return pdb->enum_alias_memberships(pdb, mem_ctx,
948 domain_sid,
949 members, num_members,
950 pp_alias_rids,
951 p_num_alias_rids);
952}
953
954NTSTATUS pdb_lookup_rids(const DOM_SID *domain_sid,
955 int num_rids,
956 uint32 *rids,
957 const char **names,
958 enum lsa_SidType *attrs)
959{
960 struct pdb_methods *pdb = pdb_get_methods();
961 return pdb->lookup_rids(pdb, domain_sid, num_rids, rids, names, attrs);
962}
963
964/*
965 * NOTE: pdb_lookup_names is currently (2007-01-12) not used anywhere
966 * in the samba code.
967 * Unlike _lsa_lookup_sids and _samr_lookup_rids, which eventually
968 * also ask pdb_lookup_rids, thus looking up a bunch of rids at a time,
969 * the pdb_ calls _lsa_lookup_names and _samr_lookup_names come
970 * down to are pdb_getsampwnam and pdb_getgrnam instead of
971 * pdb_lookup_names.
972 * But in principle, it the call belongs to the API and might get
973 * used in this context some day.
974 */
975#if 0
976NTSTATUS pdb_lookup_names(const DOM_SID *domain_sid,
977 int num_names,
978 const char **names,
979 uint32 *rids,
980 enum lsa_SidType *attrs)
981{
982 struct pdb_methods *pdb = pdb_get_methods();
983 return pdb->lookup_names(pdb, domain_sid, num_names, names, rids, attrs);
984}
985#endif
986
987BOOL pdb_get_account_policy(int policy_index, uint32 *value)
988{
989 struct pdb_methods *pdb = pdb_get_methods();
990 NTSTATUS status;
991
992 become_root();
993 status = pdb->get_account_policy(pdb, policy_index, value);
994 unbecome_root();
995
996 return NT_STATUS_IS_OK(status);
997}
998
999BOOL pdb_set_account_policy(int policy_index, uint32 value)
1000{
1001 struct pdb_methods *pdb = pdb_get_methods();
1002 NTSTATUS status;
1003
1004 become_root();
1005 status = pdb->set_account_policy(pdb, policy_index, value);
1006 unbecome_root();
1007
1008 return NT_STATUS_IS_OK(status);
1009}
1010
1011BOOL pdb_get_seq_num(time_t *seq_num)
1012{
1013 struct pdb_methods *pdb = pdb_get_methods();
1014 return NT_STATUS_IS_OK(pdb->get_seq_num(pdb, seq_num));
1015}
1016
1017BOOL pdb_uid_to_rid(uid_t uid, uint32 *rid)
1018{
1019 struct pdb_methods *pdb = pdb_get_methods();
1020 return pdb->uid_to_rid(pdb, uid, rid);
1021}
1022
1023BOOL pdb_uid_to_sid(uid_t uid, DOM_SID *sid)
1024{
1025 struct pdb_methods *pdb = pdb_get_methods();
1026 return pdb->uid_to_sid(pdb, uid, sid);
1027}
1028
1029BOOL pdb_gid_to_sid(gid_t gid, DOM_SID *sid)
1030{
1031 struct pdb_methods *pdb = pdb_get_methods();
1032 return pdb->gid_to_sid(pdb, gid, sid);
1033}
1034
1035BOOL pdb_sid_to_id(const DOM_SID *sid, union unid_t *id,
1036 enum lsa_SidType *type)
1037{
1038 struct pdb_methods *pdb = pdb_get_methods();
1039 return pdb->sid_to_id(pdb, sid, id, type);
1040}
1041
1042BOOL pdb_rid_algorithm(void)
1043{
1044 struct pdb_methods *pdb = pdb_get_methods();
1045 return pdb->rid_algorithm(pdb);
1046}
1047
1048/********************************************************************
1049 Allocate a new RID from the passdb backend. Verify that it is free
1050 by calling lookup_global_sam_rid() to verify that the RID is not
1051 in use. This handles servers that have existing users or groups
1052 with add RIDs (assigned from previous algorithmic mappings)
1053********************************************************************/
1054
1055BOOL pdb_new_rid(uint32 *rid)
1056{
1057 struct pdb_methods *pdb = pdb_get_methods();
1058 const char *name = NULL;
1059 enum lsa_SidType type;
1060 uint32 allocated_rid = 0;
1061 int i;
1062 TALLOC_CTX *ctx;
1063
1064 if (pdb_rid_algorithm()) {
1065 DEBUG(0, ("Trying to allocate a RID when algorithmic RIDs "
1066 "are active\n"));
1067 return False;
1068 }
1069
1070 if (algorithmic_rid_base() != BASE_RID) {
1071 DEBUG(0, ("'algorithmic rid base' is set but a passdb backend "
1072 "without algorithmic RIDs is chosen.\n"));
1073 DEBUGADD(0, ("Please map all used groups using 'net groupmap "
1074 "add', set the maximum used RID using\n"));
1075 DEBUGADD(0, ("'net setmaxrid' and remove the parameter\n"));
1076 return False;
1077 }
1078
1079 if ( (ctx = talloc_init("pdb_new_rid")) == NULL ) {
1080 DEBUG(0,("pdb_new_rid: Talloc initialization failure\n"));
1081 return False;
1082 }
1083
1084 /* Attempt to get an unused RID (max tires is 250...yes that it is
1085 and arbitrary number I pulkled out of my head). -- jerry */
1086
1087 for ( i=0; allocated_rid==0 && i<250; i++ ) {
1088 /* get a new RID */
1089
1090 if ( !pdb->new_rid(pdb, &allocated_rid) ) {
1091 return False;
1092 }
1093
1094 /* validate that the RID is not in use */
1095
1096 if ( lookup_global_sam_rid( ctx, allocated_rid, &name, &type, NULL ) ) {
1097 allocated_rid = 0;
1098 }
1099 }
1100
1101 TALLOC_FREE( ctx );
1102
1103 if ( allocated_rid == 0 ) {
1104 DEBUG(0,("pdb_new_rid: Failed to find unused RID\n"));
1105 return False;
1106 }
1107
1108 *rid = allocated_rid;
1109
1110 return True;
1111}
1112
1113/***************************************************************
1114 Initialize the static context (at smbd startup etc).
1115
1116 If uninitialised, context will auto-init on first use.
1117 ***************************************************************/
1118
1119BOOL initialize_password_db(BOOL reload)
1120{
1121 return (pdb_get_methods_reload(reload) != NULL);
1122}
1123
1124
1125/***************************************************************************
1126 Default implementations of some functions.
1127 ****************************************************************************/
1128
1129static NTSTATUS pdb_default_getsampwnam (struct pdb_methods *methods, struct samu *user, const char *sname)
1130{
1131 return NT_STATUS_NO_SUCH_USER;
1132}
1133
1134static NTSTATUS pdb_default_getsampwsid(struct pdb_methods *my_methods, struct samu * user, const DOM_SID *sid)
1135{
1136 return NT_STATUS_NO_SUCH_USER;
1137}
1138
1139static NTSTATUS pdb_default_add_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1140{
1141 return NT_STATUS_NOT_IMPLEMENTED;
1142}
1143
1144static NTSTATUS pdb_default_update_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1145{
1146 return NT_STATUS_NOT_IMPLEMENTED;
1147}
1148
1149static NTSTATUS pdb_default_delete_sam_account (struct pdb_methods *methods, struct samu *pwd)
1150{
1151 return NT_STATUS_NOT_IMPLEMENTED;
1152}
1153
1154static NTSTATUS pdb_default_rename_sam_account (struct pdb_methods *methods, struct samu *pwd, const char *newname)
1155{
1156 return NT_STATUS_NOT_IMPLEMENTED;
1157}
1158
1159static NTSTATUS pdb_default_update_login_attempts (struct pdb_methods *methods, struct samu *newpwd, BOOL success)
1160{
1161 return NT_STATUS_OK;
1162}
1163
1164static NTSTATUS pdb_default_setsampwent(struct pdb_methods *methods, BOOL update, uint32 acb_mask)
1165{
1166 return NT_STATUS_NOT_IMPLEMENTED;
1167}
1168
1169static NTSTATUS pdb_default_getsampwent(struct pdb_methods *methods, struct samu *user)
1170{
1171 return NT_STATUS_NOT_IMPLEMENTED;
1172}
1173
1174static void pdb_default_endsampwent(struct pdb_methods *methods)
1175{
1176 return; /* NT_STATUS_NOT_IMPLEMENTED; */
1177}
1178
1179static NTSTATUS pdb_default_get_account_policy(struct pdb_methods *methods, int policy_index, uint32 *value)
1180{
1181 return account_policy_get(policy_index, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1182}
1183
1184static NTSTATUS pdb_default_set_account_policy(struct pdb_methods *methods, int policy_index, uint32 value)
1185{
1186 return account_policy_set(policy_index, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1187}
1188
1189static NTSTATUS pdb_default_get_seq_num(struct pdb_methods *methods, time_t *seq_num)
1190{
1191 *seq_num = time(NULL);
1192 return NT_STATUS_OK;
1193}
1194
1195static BOOL pdb_default_uid_to_sid(struct pdb_methods *methods, uid_t uid,
1196 DOM_SID *sid)
1197{
1198 struct samu *sampw = NULL;
1199 struct passwd *unix_pw;
1200 BOOL ret;
1201
1202 unix_pw = sys_getpwuid( uid );
1203
1204 if ( !unix_pw ) {
1205 DEBUG(4,("pdb_default_uid_to_rid: host has no idea of uid "
1206 "%lu\n", (unsigned long)uid));
1207 return False;
1208 }
1209
1210 if ( !(sampw = samu_new( NULL )) ) {
1211 DEBUG(0,("pdb_default_uid_to_rid: samu_new() failed!\n"));
1212 return False;
1213 }
1214
1215 become_root();
1216 ret = NT_STATUS_IS_OK(
1217 methods->getsampwnam(methods, sampw, unix_pw->pw_name ));
1218 unbecome_root();
1219
1220 if (!ret) {
1221 DEBUG(5, ("pdb_default_uid_to_rid: Did not find user "
1222 "%s (%d)\n", unix_pw->pw_name, uid));
1223 TALLOC_FREE(sampw);
1224 return False;
1225 }
1226
1227 sid_copy(sid, pdb_get_user_sid(sampw));
1228
1229 TALLOC_FREE(sampw);
1230
1231 return True;
1232}
1233
1234static BOOL pdb_default_uid_to_rid(struct pdb_methods *methods, uid_t uid,
1235 uint32 *rid)
1236{
1237 DOM_SID sid;
1238 BOOL ret;
1239
1240 ret = pdb_default_uid_to_sid(methods, uid, &sid);
1241 if (!ret) {
1242 return ret;
1243 }
1244
1245 ret = sid_peek_check_rid(get_global_sam_sid(), &sid, rid);
1246
1247 if (!ret) {
1248 DEBUG(1, ("Could not peek rid out of sid %s\n",
1249 sid_string_static(&sid)));
1250 }
1251
1252 return ret;
1253}
1254
1255static BOOL pdb_default_gid_to_sid(struct pdb_methods *methods, gid_t gid,
1256 DOM_SID *sid)
1257{
1258 GROUP_MAP map;
1259
1260 if (!NT_STATUS_IS_OK(methods->getgrgid(methods, &map, gid))) {
1261 return False;
1262 }
1263
1264 sid_copy(sid, &map.sid);
1265 return True;
1266}
1267
1268static BOOL pdb_default_sid_to_id(struct pdb_methods *methods,
1269 const DOM_SID *sid,
1270 union unid_t *id, enum lsa_SidType *type)
1271{
1272 TALLOC_CTX *mem_ctx;
1273 BOOL ret = False;
1274 const char *name;
1275 uint32 rid;
1276
1277 mem_ctx = talloc_new(NULL);
1278
1279 if (mem_ctx == NULL) {
1280 DEBUG(0, ("talloc_new failed\n"));
1281 return False;
1282 }
1283
1284 if (sid_peek_check_rid(get_global_sam_sid(), sid, &rid)) {
1285 /* Here we might have users as well as groups and aliases */
1286 ret = lookup_global_sam_rid(mem_ctx, rid, &name, type, id);
1287 goto done;
1288 }
1289
1290 /* check for "Unix User" */
1291
1292 if ( sid_peek_check_rid(&global_sid_Unix_Users, sid, &rid) ) {
1293 id->uid = rid;
1294 *type = SID_NAME_USER;
1295 ret = True;
1296 goto done;
1297 }
1298
1299 /* check for "Unix User" */
1300
1301 if ( sid_peek_check_rid(&global_sid_Unix_Groups, sid, &rid) ) {
1302 id->gid = rid;
1303 *type = SID_NAME_ALIAS;
1304 ret = True;
1305 goto done;
1306 }
1307
1308
1309 /* BUILTIN */
1310
1311 if (sid_peek_check_rid(&global_sid_Builtin, sid, &rid)) {
1312 /* Here we only have aliases */
1313 GROUP_MAP map;
1314 if (!NT_STATUS_IS_OK(methods->getgrsid(methods, &map, *sid))) {
1315 DEBUG(10, ("Could not find map for sid %s\n",
1316 sid_string_static(sid)));
1317 goto done;
1318 }
1319 if ((map.sid_name_use != SID_NAME_ALIAS) &&
1320 (map.sid_name_use != SID_NAME_WKN_GRP)) {
1321 DEBUG(10, ("Map for sid %s is a %s, expected an "
1322 "alias\n", sid_string_static(sid),
1323 sid_type_lookup(map.sid_name_use)));
1324 goto done;
1325 }
1326
1327 id->gid = map.gid;
1328 *type = SID_NAME_ALIAS;
1329 ret = True;
1330 goto done;
1331 }
1332
1333 DEBUG(5, ("Sid %s is neither ours, a Unix SID, nor builtin\n",
1334 sid_string_static(sid)));
1335
1336 done:
1337
1338 TALLOC_FREE(mem_ctx);
1339 return ret;
1340}
1341
1342static BOOL add_uid_to_array_unique(TALLOC_CTX *mem_ctx,
1343 uid_t uid, uid_t **pp_uids, size_t *p_num)
1344{
1345 size_t i;
1346
1347 for (i=0; i<*p_num; i++) {
1348 if ((*pp_uids)[i] == uid)
1349 return True;
1350 }
1351
1352 *pp_uids = TALLOC_REALLOC_ARRAY(mem_ctx, *pp_uids, uid_t, *p_num+1);
1353
1354 if (*pp_uids == NULL)
1355 return False;
1356
1357 (*pp_uids)[*p_num] = uid;
1358 *p_num += 1;
1359 return True;
1360}
1361
1362static BOOL get_memberuids(TALLOC_CTX *mem_ctx, gid_t gid, uid_t **pp_uids, size_t *p_num)
1363{
1364 struct group *grp;
1365 char **gr;
1366 struct passwd *pwd;
1367 BOOL winbind_env;
1368 BOOL ret = False;
1369
1370 *pp_uids = NULL;
1371 *p_num = 0;
1372
1373 /* We only look at our own sam, so don't care about imported stuff */
1374 winbind_env = winbind_env_set();
1375 winbind_off();
1376
1377 if ((grp = getgrgid(gid)) == NULL) {
1378 /* allow winbindd lookups, but only if they weren't already disabled */
1379 goto done;
1380 }
1381
1382 /* Primary group members */
1383 setpwent();
1384 while ((pwd = getpwent()) != NULL) {
1385 if (pwd->pw_gid == gid) {
1386 if (!add_uid_to_array_unique(mem_ctx, pwd->pw_uid,
1387 pp_uids, p_num)) {
1388 goto done;
1389 }
1390 }
1391 }
1392 endpwent();
1393
1394 /* Secondary group members */
1395 for (gr = grp->gr_mem; (*gr != NULL) && ((*gr)[0] != '\0'); gr += 1) {
1396 struct passwd *pw = getpwnam(*gr);
1397
1398 if (pw == NULL)
1399 continue;
1400 if (!add_uid_to_array_unique(mem_ctx, pw->pw_uid, pp_uids, p_num)) {
1401 goto done;
1402 }
1403 }
1404
1405 ret = True;
1406
1407 done:
1408
1409 /* allow winbindd lookups, but only if they weren't already disabled */
1410 if (!winbind_env) {
1411 winbind_on();
1412 }
1413
1414 return ret;
1415}
1416
1417static NTSTATUS pdb_default_enum_group_members(struct pdb_methods *methods,
1418 TALLOC_CTX *mem_ctx,
1419 const DOM_SID *group,
1420 uint32 **pp_member_rids,
1421 size_t *p_num_members)
1422{
1423 gid_t gid;
1424 uid_t *uids;
1425 size_t i, num_uids;
1426
1427 *pp_member_rids = NULL;
1428 *p_num_members = 0;
1429
1430 if (!sid_to_gid(group, &gid))
1431 return NT_STATUS_NO_SUCH_GROUP;
1432
1433 if(!get_memberuids(mem_ctx, gid, &uids, &num_uids))
1434 return NT_STATUS_NO_SUCH_GROUP;
1435
1436 if (num_uids == 0)
1437 return NT_STATUS_OK;
1438
1439 *pp_member_rids = TALLOC_ZERO_ARRAY(mem_ctx, uint32, num_uids);
1440
1441 for (i=0; i<num_uids; i++) {
1442 DOM_SID sid;
1443
1444 uid_to_sid(&sid, uids[i]);
1445
1446 if (!sid_check_is_in_our_domain(&sid)) {
1447 DEBUG(5, ("Inconsistent SAM -- group member uid not "
1448 "in our domain\n"));
1449 continue;
1450 }
1451
1452 sid_peek_rid(&sid, &(*pp_member_rids)[*p_num_members]);
1453 *p_num_members += 1;
1454 }
1455
1456 return NT_STATUS_OK;
1457}
1458
1459static NTSTATUS pdb_default_enum_group_memberships(struct pdb_methods *methods,
1460 TALLOC_CTX *mem_ctx,
1461 struct samu *user,
1462 DOM_SID **pp_sids,
1463 gid_t **pp_gids,
1464 size_t *p_num_groups)
1465{
1466 size_t i;
1467 gid_t gid;
1468 struct passwd *pw;
1469 const char *username = pdb_get_username(user);
1470
1471
1472 /* Ignore the primary group SID. Honor the real Unix primary group.
1473 The primary group SID is only of real use to Windows clients */
1474
1475 if ( !(pw = getpwnam_alloc(mem_ctx, username)) ) {
1476 return NT_STATUS_NO_SUCH_USER;
1477 }
1478
1479 gid = pw->pw_gid;
1480
1481 TALLOC_FREE( pw );
1482
1483 if (!getgroups_unix_user(mem_ctx, username, gid, pp_gids, p_num_groups)) {
1484 return NT_STATUS_NO_SUCH_USER;
1485 }
1486
1487 if (*p_num_groups == 0) {
1488 smb_panic("primary group missing");
1489 }
1490
1491 *pp_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, *p_num_groups);
1492
1493 if (*pp_sids == NULL) {
1494 TALLOC_FREE(*pp_gids);
1495 return NT_STATUS_NO_MEMORY;
1496 }
1497
1498 for (i=0; i<*p_num_groups; i++) {
1499 gid_to_sid(&(*pp_sids)[i], (*pp_gids)[i]);
1500 }
1501
1502 return NT_STATUS_OK;
1503}
1504
1505/*******************************************************************
1506 Look up a rid in the SAM we're responsible for (i.e. passdb)
1507 ********************************************************************/
1508
1509static BOOL lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
1510 const char **name,
1511 enum lsa_SidType *psid_name_use,
1512 union unid_t *unix_id)
1513{
1514 struct samu *sam_account = NULL;
1515 GROUP_MAP map;
1516 BOOL ret;
1517 DOM_SID sid;
1518
1519 *psid_name_use = SID_NAME_UNKNOWN;
1520
1521 DEBUG(5,("lookup_global_sam_rid: looking up RID %u.\n",
1522 (unsigned int)rid));
1523
1524 sid_copy(&sid, get_global_sam_sid());
1525 sid_append_rid(&sid, rid);
1526
1527 /* see if the passdb can help us with the name of the user */
1528
1529 if ( !(sam_account = samu_new( NULL )) ) {
1530 return False;
1531 }
1532
1533 /* BEING ROOT BLLOCK */
1534 become_root();
1535 if (pdb_getsampwsid(sam_account, &sid)) {
1536 struct passwd *pw;
1537
1538 unbecome_root(); /* -----> EXIT BECOME_ROOT() */
1539 *name = talloc_strdup(mem_ctx, pdb_get_username(sam_account));
1540 if (!*name) {
1541 TALLOC_FREE(sam_account);
1542 return False;
1543 }
1544
1545 *psid_name_use = SID_NAME_USER;
1546
1547 TALLOC_FREE(sam_account);
1548
1549 if (unix_id == NULL) {
1550 return True;
1551 }
1552
1553 pw = Get_Pwnam(*name);
1554 if (pw == NULL) {
1555 return False;
1556 }
1557 unix_id->uid = pw->pw_uid;
1558 return True;
1559 }
1560 TALLOC_FREE(sam_account);
1561
1562 ret = pdb_getgrsid(&map, sid);
1563 unbecome_root();
1564 /* END BECOME_ROOT BLOCK */
1565
1566 /* do not resolve SIDs to a name unless there is a valid
1567 gid associated with it */
1568
1569 if ( ret && (map.gid != (gid_t)-1) ) {
1570 *name = talloc_strdup(mem_ctx, map.nt_name);
1571 *psid_name_use = map.sid_name_use;
1572
1573 if ( unix_id ) {
1574 unix_id->gid = map.gid;
1575 }
1576
1577 return True;
1578 }
1579
1580 /* Windows will always map RID 513 to something. On a non-domain
1581 controller, this gets mapped to SERVER\None. */
1582
1583 if ( unix_id ) {
1584 DEBUG(5, ("Can't find a unix id for an unmapped group\n"));
1585 return False;
1586 }
1587
1588 if ( rid == DOMAIN_GROUP_RID_USERS ) {
1589 *name = talloc_strdup(mem_ctx, "None" );
1590 *psid_name_use = SID_NAME_DOM_GRP;
1591
1592 return True;
1593 }
1594
1595 return False;
1596}
1597
1598static NTSTATUS pdb_default_lookup_rids(struct pdb_methods *methods,
1599 const DOM_SID *domain_sid,
1600 int num_rids,
1601 uint32 *rids,
1602 const char **names,
1603 enum lsa_SidType *attrs)
1604{
1605 int i;
1606 NTSTATUS result;
1607 BOOL have_mapped = False;
1608 BOOL have_unmapped = False;
1609
1610 if (sid_check_is_builtin(domain_sid)) {
1611
1612 for (i=0; i<num_rids; i++) {
1613 const char *name;
1614
1615 if (lookup_builtin_rid(names, rids[i], &name)) {
1616 attrs[i] = SID_NAME_ALIAS;
1617 names[i] = name;
1618 DEBUG(5,("lookup_rids: %s:%d\n",
1619 names[i], attrs[i]));
1620 have_mapped = True;
1621 } else {
1622 have_unmapped = True;
1623 attrs[i] = SID_NAME_UNKNOWN;
1624 }
1625 }
1626 goto done;
1627 }
1628
1629 /* Should not happen, but better check once too many */
1630 if (!sid_check_is_domain(domain_sid)) {
1631 return NT_STATUS_INVALID_HANDLE;
1632 }
1633
1634 for (i = 0; i < num_rids; i++) {
1635 const char *name;
1636
1637 if (lookup_global_sam_rid(names, rids[i], &name, &attrs[i],
1638 NULL)) {
1639 if (name == NULL) {
1640 return NT_STATUS_NO_MEMORY;
1641 }
1642 names[i] = name;
1643 DEBUG(5,("lookup_rids: %s:%d\n", names[i], attrs[i]));
1644 have_mapped = True;
1645 } else {
1646 have_unmapped = True;
1647 attrs[i] = SID_NAME_UNKNOWN;
1648 }
1649 }
1650
1651 done:
1652
1653 result = NT_STATUS_NONE_MAPPED;
1654
1655 if (have_mapped)
1656 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1657
1658 return result;
1659}
1660
1661#if 0
1662static NTSTATUS pdb_default_lookup_names(struct pdb_methods *methods,
1663 const DOM_SID *domain_sid,
1664 int num_names,
1665 const char **names,
1666 uint32 *rids,
1667 enum lsa_SidType *attrs)
1668{
1669 int i;
1670 NTSTATUS result;
1671 BOOL have_mapped = False;
1672 BOOL have_unmapped = False;
1673
1674 if (sid_check_is_builtin(domain_sid)) {
1675
1676 for (i=0; i<num_names; i++) {
1677 uint32 rid;
1678
1679 if (lookup_builtin_name(names[i], &rid)) {
1680 attrs[i] = SID_NAME_ALIAS;
1681 rids[i] = rid;
1682 DEBUG(5,("lookup_rids: %s:%d\n",
1683 names[i], attrs[i]));
1684 have_mapped = True;
1685 } else {
1686 have_unmapped = True;
1687 attrs[i] = SID_NAME_UNKNOWN;
1688 }
1689 }
1690 goto done;
1691 }
1692
1693 /* Should not happen, but better check once too many */
1694 if (!sid_check_is_domain(domain_sid)) {
1695 return NT_STATUS_INVALID_HANDLE;
1696 }
1697
1698 for (i = 0; i < num_names; i++) {
1699 if (lookup_global_sam_name(names[i], 0, &rids[i], &attrs[i])) {
1700 DEBUG(5,("lookup_names: %s-> %d:%d\n", names[i],
1701 rids[i], attrs[i]));
1702 have_mapped = True;
1703 } else {
1704 have_unmapped = True;
1705 attrs[i] = SID_NAME_UNKNOWN;
1706 }
1707 }
1708
1709 done:
1710
1711 result = NT_STATUS_NONE_MAPPED;
1712
1713 if (have_mapped)
1714 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1715
1716 return result;
1717}
1718#endif
1719
1720static struct pdb_search *pdb_search_init(enum pdb_search_type type)
1721{
1722 TALLOC_CTX *mem_ctx;
1723 struct pdb_search *result;
1724
1725 mem_ctx = talloc_init("pdb_search");
1726 if (mem_ctx == NULL) {
1727 DEBUG(0, ("talloc_init failed\n"));
1728 return NULL;
1729 }
1730
1731 result = TALLOC_P(mem_ctx, struct pdb_search);
1732 if (result == NULL) {
1733 DEBUG(0, ("talloc failed\n"));
1734 return NULL;
1735 }
1736
1737 result->mem_ctx = mem_ctx;
1738 result->type = type;
1739 result->cache = NULL;
1740 result->num_entries = 0;
1741 result->cache_size = 0;
1742 result->search_ended = False;
1743
1744 /* Segfault appropriately if not initialized */
1745 result->next_entry = NULL;
1746 result->search_end = NULL;
1747
1748 return result;
1749}
1750
1751static void fill_displayentry(TALLOC_CTX *mem_ctx, uint32 rid,
1752 uint16 acct_flags,
1753 const char *account_name,
1754 const char *fullname,
1755 const char *description,
1756 struct samr_displayentry *entry)
1757{
1758 entry->rid = rid;
1759 entry->acct_flags = acct_flags;
1760
1761 if (account_name != NULL)
1762 entry->account_name = talloc_strdup(mem_ctx, account_name);
1763 else
1764 entry->account_name = "";
1765
1766 if (fullname != NULL)
1767 entry->fullname = talloc_strdup(mem_ctx, fullname);
1768 else
1769 entry->fullname = "";
1770
1771 if (description != NULL)
1772 entry->description = talloc_strdup(mem_ctx, description);
1773 else
1774 entry->description = "";
1775}
1776
1777static BOOL user_search_in_progress = False;
1778struct user_search {
1779 uint16 acct_flags;
1780};
1781
1782static BOOL next_entry_users(struct pdb_search *s,
1783 struct samr_displayentry *entry)
1784{
1785 struct user_search *state = (struct user_search *)s->private_data;
1786 struct samu *user = NULL;
1787
1788 next:
1789 if ( !(user = samu_new( NULL )) ) {
1790 DEBUG(0, ("next_entry_users: samu_new() failed!\n"));
1791 return False;
1792 }
1793
1794 if (!pdb_getsampwent(user)) {
1795 TALLOC_FREE(user);
1796 return False;
1797 }
1798
1799 if ((state->acct_flags != 0) &&
1800 ((pdb_get_acct_ctrl(user) & state->acct_flags) == 0)) {
1801 TALLOC_FREE(user);
1802 goto next;
1803 }
1804
1805 fill_displayentry(s->mem_ctx, pdb_get_user_rid(user),
1806 pdb_get_acct_ctrl(user), pdb_get_username(user),
1807 pdb_get_fullname(user), pdb_get_acct_desc(user),
1808 entry);
1809
1810 TALLOC_FREE(user);
1811 return True;
1812}
1813
1814static void search_end_users(struct pdb_search *search)
1815{
1816 pdb_endsampwent();
1817 user_search_in_progress = False;
1818}
1819
1820static BOOL pdb_default_search_users(struct pdb_methods *methods,
1821 struct pdb_search *search,
1822 uint32 acct_flags)
1823{
1824 struct user_search *state;
1825
1826 if (user_search_in_progress) {
1827 DEBUG(1, ("user search in progress\n"));
1828 return False;
1829 }
1830
1831 if (!pdb_setsampwent(False, acct_flags)) {
1832 DEBUG(5, ("Could not start search\n"));
1833 return False;
1834 }
1835
1836 user_search_in_progress = True;
1837
1838 state = TALLOC_P(search->mem_ctx, struct user_search);
1839 if (state == NULL) {
1840 DEBUG(0, ("talloc failed\n"));
1841 return False;
1842 }
1843
1844 state->acct_flags = acct_flags;
1845
1846 search->private_data = state;
1847 search->next_entry = next_entry_users;
1848 search->search_end = search_end_users;
1849 return True;
1850}
1851
1852struct group_search {
1853 GROUP_MAP *groups;
1854 size_t num_groups, current_group;
1855};
1856
1857static BOOL next_entry_groups(struct pdb_search *s,
1858 struct samr_displayentry *entry)
1859{
1860 struct group_search *state = (struct group_search *)s->private_data;
1861 uint32 rid;
1862 GROUP_MAP *map = &state->groups[state->current_group];
1863
1864 if (state->current_group == state->num_groups)
1865 return False;
1866
1867 sid_peek_rid(&map->sid, &rid);
1868
1869 fill_displayentry(s->mem_ctx, rid, 0, map->nt_name, NULL, map->comment,
1870 entry);
1871
1872 state->current_group += 1;
1873 return True;
1874}
1875
1876static void search_end_groups(struct pdb_search *search)
1877{
1878 struct group_search *state =
1879 (struct group_search *)search->private_data;
1880 SAFE_FREE(state->groups);
1881}
1882
1883static BOOL pdb_search_grouptype(struct pdb_search *search,
1884 const DOM_SID *sid, enum lsa_SidType type)
1885{
1886 struct group_search *state;
1887
1888 state = TALLOC_P(search->mem_ctx, struct group_search);
1889 if (state == NULL) {
1890 DEBUG(0, ("talloc failed\n"));
1891 return False;
1892 }
1893
1894 if (!pdb_enum_group_mapping(sid, type, &state->groups, &state->num_groups,
1895 True)) {
1896 DEBUG(0, ("Could not enum groups\n"));
1897 return False;
1898 }
1899
1900 state->current_group = 0;
1901 search->private_data = state;
1902 search->next_entry = next_entry_groups;
1903 search->search_end = search_end_groups;
1904 return True;
1905}
1906
1907static BOOL pdb_default_search_groups(struct pdb_methods *methods,
1908 struct pdb_search *search)
1909{
1910 return pdb_search_grouptype(search, get_global_sam_sid(), SID_NAME_DOM_GRP);
1911}
1912
1913static BOOL pdb_default_search_aliases(struct pdb_methods *methods,
1914 struct pdb_search *search,
1915 const DOM_SID *sid)
1916{
1917
1918 return pdb_search_grouptype(search, sid, SID_NAME_ALIAS);
1919}
1920
1921static struct samr_displayentry *pdb_search_getentry(struct pdb_search *search,
1922 uint32 idx)
1923{
1924 if (idx < search->num_entries)
1925 return &search->cache[idx];
1926
1927 if (search->search_ended)
1928 return NULL;
1929
1930 while (idx >= search->num_entries) {
1931 struct samr_displayentry entry;
1932
1933 if (!search->next_entry(search, &entry)) {
1934 search->search_end(search);
1935 search->search_ended = True;
1936 break;
1937 }
1938
1939 ADD_TO_LARGE_ARRAY(search->mem_ctx, struct samr_displayentry,
1940 entry, &search->cache, &search->num_entries,
1941 &search->cache_size);
1942 }
1943
1944 return (search->num_entries > idx) ? &search->cache[idx] : NULL;
1945}
1946
1947struct pdb_search *pdb_search_users(uint32 acct_flags)
1948{
1949 struct pdb_methods *pdb = pdb_get_methods();
1950 struct pdb_search *result;
1951
1952 result = pdb_search_init(PDB_USER_SEARCH);
1953 if (result == NULL) {
1954 return NULL;
1955 }
1956
1957 if (!pdb->search_users(pdb, result, acct_flags)) {
1958 talloc_destroy(result->mem_ctx);
1959 return NULL;
1960 }
1961 return result;
1962}
1963
1964struct pdb_search *pdb_search_groups(void)
1965{
1966 struct pdb_methods *pdb = pdb_get_methods();
1967 struct pdb_search *result;
1968
1969 result = pdb_search_init(PDB_GROUP_SEARCH);
1970 if (result == NULL) {
1971 return NULL;
1972 }
1973
1974 if (!pdb->search_groups(pdb, result)) {
1975 talloc_destroy(result->mem_ctx);
1976 return NULL;
1977 }
1978 return result;
1979}
1980
1981struct pdb_search *pdb_search_aliases(const DOM_SID *sid)
1982{
1983 struct pdb_methods *pdb = pdb_get_methods();
1984 struct pdb_search *result;
1985
1986 if (pdb == NULL) return NULL;
1987
1988 result = pdb_search_init(PDB_ALIAS_SEARCH);
1989 if (result == NULL) return NULL;
1990
1991 if (!pdb->search_aliases(pdb, result, sid)) {
1992 talloc_destroy(result->mem_ctx);
1993 return NULL;
1994 }
1995 return result;
1996}
1997
1998uint32 pdb_search_entries(struct pdb_search *search,
1999 uint32 start_idx, uint32 max_entries,
2000 struct samr_displayentry **result)
2001{
2002 struct samr_displayentry *end_entry;
2003 uint32 end_idx = start_idx+max_entries-1;
2004
2005 /* The first entry needs to be searched after the last. Otherwise the
2006 * first entry might have moved due to a realloc during the search for
2007 * the last entry. */
2008
2009 end_entry = pdb_search_getentry(search, end_idx);
2010 *result = pdb_search_getentry(search, start_idx);
2011
2012 if (end_entry != NULL)
2013 return max_entries;
2014
2015 if (start_idx >= search->num_entries)
2016 return 0;
2017
2018 return search->num_entries - start_idx;
2019}
2020
2021void pdb_search_destroy(struct pdb_search *search)
2022{
2023 if (search == NULL)
2024 return;
2025
2026 if (!search->search_ended)
2027 search->search_end(search);
2028
2029 talloc_destroy(search->mem_ctx);
2030}
2031
2032/*******************************************************************
2033 Create a pdb_methods structure and initialize it with the default
2034 operations. In this way a passdb module can simply implement
2035 the functionality it cares about. However, normally this is done
2036 in groups of related functions.
2037*******************************************************************/
2038
2039NTSTATUS make_pdb_method( struct pdb_methods **methods )
2040{
2041 /* allocate memory for the structure as its own talloc CTX */
2042
2043 if ( !(*methods = TALLOC_ZERO_P(NULL, struct pdb_methods) ) ) {
2044 return NT_STATUS_NO_MEMORY;
2045 }
2046
2047 (*methods)->setsampwent = pdb_default_setsampwent;
2048 (*methods)->endsampwent = pdb_default_endsampwent;
2049 (*methods)->getsampwent = pdb_default_getsampwent;
2050 (*methods)->getsampwnam = pdb_default_getsampwnam;
2051 (*methods)->getsampwsid = pdb_default_getsampwsid;
2052 (*methods)->create_user = pdb_default_create_user;
2053 (*methods)->delete_user = pdb_default_delete_user;
2054 (*methods)->add_sam_account = pdb_default_add_sam_account;
2055 (*methods)->update_sam_account = pdb_default_update_sam_account;
2056 (*methods)->delete_sam_account = pdb_default_delete_sam_account;
2057 (*methods)->rename_sam_account = pdb_default_rename_sam_account;
2058 (*methods)->update_login_attempts = pdb_default_update_login_attempts;
2059
2060 (*methods)->getgrsid = pdb_default_getgrsid;
2061 (*methods)->getgrgid = pdb_default_getgrgid;
2062 (*methods)->getgrnam = pdb_default_getgrnam;
2063 (*methods)->create_dom_group = pdb_default_create_dom_group;
2064 (*methods)->delete_dom_group = pdb_default_delete_dom_group;
2065 (*methods)->add_group_mapping_entry = pdb_default_add_group_mapping_entry;
2066 (*methods)->update_group_mapping_entry = pdb_default_update_group_mapping_entry;
2067 (*methods)->delete_group_mapping_entry = pdb_default_delete_group_mapping_entry;
2068 (*methods)->enum_group_mapping = pdb_default_enum_group_mapping;
2069 (*methods)->enum_group_members = pdb_default_enum_group_members;
2070 (*methods)->enum_group_memberships = pdb_default_enum_group_memberships;
2071 (*methods)->set_unix_primary_group = pdb_default_set_unix_primary_group;
2072 (*methods)->add_groupmem = pdb_default_add_groupmem;
2073 (*methods)->del_groupmem = pdb_default_del_groupmem;
2074 (*methods)->find_alias = pdb_default_find_alias;
2075 (*methods)->create_alias = pdb_default_create_alias;
2076 (*methods)->delete_alias = pdb_default_delete_alias;
2077 (*methods)->get_aliasinfo = pdb_default_get_aliasinfo;
2078 (*methods)->set_aliasinfo = pdb_default_set_aliasinfo;
2079 (*methods)->add_aliasmem = pdb_default_add_aliasmem;
2080 (*methods)->del_aliasmem = pdb_default_del_aliasmem;
2081 (*methods)->enum_aliasmem = pdb_default_enum_aliasmem;
2082 (*methods)->enum_alias_memberships = pdb_default_alias_memberships;
2083 (*methods)->lookup_rids = pdb_default_lookup_rids;
2084 (*methods)->get_account_policy = pdb_default_get_account_policy;
2085 (*methods)->set_account_policy = pdb_default_set_account_policy;
2086 (*methods)->get_seq_num = pdb_default_get_seq_num;
2087 (*methods)->uid_to_rid = pdb_default_uid_to_rid;
2088 (*methods)->uid_to_sid = pdb_default_uid_to_sid;
2089 (*methods)->gid_to_sid = pdb_default_gid_to_sid;
2090 (*methods)->sid_to_id = pdb_default_sid_to_id;
2091
2092 (*methods)->search_users = pdb_default_search_users;
2093 (*methods)->search_groups = pdb_default_search_groups;
2094 (*methods)->search_aliases = pdb_default_search_aliases;
2095
2096 return NT_STATUS_OK;
2097}
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