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librpc: Shorten dcerpc_binding_handle_call a bit
[Samba/id10ts.git] / source3 / passdb / pdb_interface.c
blob36dde6f8e6cc16aaa43c4a6600dc3b91a1cdac81
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 #include "system/passwd.h"
25 #include "passdb.h"
26 #include "secrets.h"
27 #include "messages.h"
28 #include "../librpc/gen_ndr/samr.h"
29 #include "../librpc/gen_ndr/drsblobs.h"
30 #include "../librpc/gen_ndr/ndr_drsblobs.h"
31 #include "../librpc/gen_ndr/idmap.h"
32 #include "memcache.h"
33 #include "nsswitch/winbind_client.h"
34 #include "../libcli/security/security.h"
35 #include "../lib/util/util_pw.h"
36 #include "passdb/pdb_secrets.h"
37
38 #undef DBGC_CLASS
39 #define DBGC_CLASS DBGC_PASSDB
40
41 static_decl_pdb;
42
43 static struct pdb_init_function_entry *backends = NULL;
44
45 static void lazy_initialize_passdb(void)
46 {
47 static bool initialized = False;
48 if(initialized) {
49 return;
50 }
51 static_init_pdb;
52 initialized = True;
53 }
54
55 static bool lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
56 const char **name,
57 enum lsa_SidType *psid_name_use,
58 uid_t *uid, gid_t *gid);
59
60 NTSTATUS smb_register_passdb(int version, const char *name, pdb_init_function init)
61 {
62 struct pdb_init_function_entry *entry = backends;
63
64 if(version != PASSDB_INTERFACE_VERSION) {
65 DEBUG(0,("Can't register passdb backend!\n"
66 "You tried to register a passdb module with PASSDB_INTERFACE_VERSION %d, "
67 "while this version of samba uses version %d\n",
68 version,PASSDB_INTERFACE_VERSION));
69 return NT_STATUS_OBJECT_TYPE_MISMATCH;
70 }
71
72 if (!name || !init) {
73 return NT_STATUS_INVALID_PARAMETER;
74 }
75
76 DEBUG(5,("Attempting to register passdb backend %s\n", name));
77
78 /* Check for duplicates */
79 if (pdb_find_backend_entry(name)) {
80 DEBUG(0,("There already is a passdb backend registered with the name %s!\n", name));
81 return NT_STATUS_OBJECT_NAME_COLLISION;
82 }
83
84 entry = SMB_XMALLOC_P(struct pdb_init_function_entry);
85 entry->name = smb_xstrdup(name);
86 entry->init = init;
87
88 DLIST_ADD(backends, entry);
89 DEBUG(5,("Successfully added passdb backend '%s'\n", name));
90 return NT_STATUS_OK;
91 }
92
93 struct pdb_init_function_entry *pdb_find_backend_entry(const char *name)
94 {
95 struct pdb_init_function_entry *entry = backends;
96
97 while(entry) {
98 if (strcmp(entry->name, name)==0) return entry;
99 entry = entry->next;
100 }
101
102 return NULL;
103 }
104
105 const struct pdb_init_function_entry *pdb_get_backends(void)
106 {
107 return backends;
108 }
109
110
111 /*
112 * The event context for the passdb backend. I know this is a bad hack and yet
113 * another static variable, but our pdb API is a global thing per
114 * definition. The first use for this is the LDAP idle function, more might be
115 * added later.
116 *
117 * I don't feel too bad about this static variable, it replaces the
118 * smb_idle_event_list that used to exist in lib/module.c. -- VL
119 */
120
121 static struct tevent_context *pdb_tevent_ctx;
122
123 struct tevent_context *pdb_get_tevent_context(void)
124 {
125 return pdb_tevent_ctx;
126 }
127
128 /******************************************************************
129 Make a pdb_methods from scratch
130 *******************************************************************/
131
132 NTSTATUS make_pdb_method_name(struct pdb_methods **methods, const char *selected)
133 {
134 char *module_name = smb_xstrdup(selected);
135 char *module_location = NULL, *p;
136 struct pdb_init_function_entry *entry;
137 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
138
139 lazy_initialize_passdb();
140
141 p = strchr(module_name, ':');
142
143 if (p) {
144 *p = 0;
145 module_location = p+1;
146 trim_char(module_location, ' ', ' ');
147 }
148
149 trim_char(module_name, ' ', ' ');
150
151
152 DEBUG(5,("Attempting to find a passdb backend to match %s (%s)\n", selected, module_name));
153
154 entry = pdb_find_backend_entry(module_name);
155
156 /* Try to find a module that contains this module */
157 if (!entry) {
158 DEBUG(2,("No builtin backend found, trying to load plugin\n"));
159 if(NT_STATUS_IS_OK(smb_probe_module("pdb", module_name)) && !(entry = pdb_find_backend_entry(module_name))) {
160 DEBUG(0,("Plugin is available, but doesn't register passdb backend %s\n", module_name));
161 SAFE_FREE(module_name);
162 return NT_STATUS_UNSUCCESSFUL;
163 }
164 }
165
166 /* No such backend found */
167 if(!entry) {
168 DEBUG(0,("No builtin nor plugin backend for %s found\n", module_name));
169 SAFE_FREE(module_name);
170 return NT_STATUS_INVALID_PARAMETER;
171 }
172
173 DEBUG(5,("Found pdb backend %s\n", module_name));
174
175 if ( !NT_STATUS_IS_OK( nt_status = entry->init(methods, module_location) ) ) {
176 DEBUG(0,("pdb backend %s did not correctly init (error was %s)\n",
177 selected, nt_errstr(nt_status)));
178 SAFE_FREE(module_name);
179 return nt_status;
180 }
181
182 SAFE_FREE(module_name);
183
184 DEBUG(5,("pdb backend %s has a valid init\n", selected));
185
186 return nt_status;
187 }
188
189 /******************************************************************
190 Return an already initialized pdb_methods structure
191 *******************************************************************/
192
193 static struct pdb_methods *pdb_get_methods_reload( bool reload )
194 {
195 static struct pdb_methods *pdb = NULL;
196
197 if ( pdb && reload ) {
198 if (pdb->free_private_data != NULL) {
199 pdb->free_private_data( &(pdb->private_data) );
200 }
201 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
202 return NULL;
203 }
204 }
205
206 if ( !pdb ) {
207 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
208 return NULL;
209 }
210 }
211
212 return pdb;
213 }
214
215 static struct pdb_methods *pdb_get_methods(void)
216 {
217 struct pdb_methods *pdb;
218
219 pdb = pdb_get_methods_reload(false);
220 if (!pdb) {
221 char *msg = NULL;
222 if (asprintf(&msg, "pdb_get_methods: "
223 "failed to get pdb methods for backend %s\n",
224 lp_passdb_backend()) > 0) {
225 smb_panic(msg);
226 } else {
227 smb_panic("pdb_get_methods");
228 }
229 }
230
231 return pdb;
232 }
233
234 struct pdb_domain_info *pdb_get_domain_info(TALLOC_CTX *mem_ctx)
235 {
236 struct pdb_methods *pdb = pdb_get_methods();
237 return pdb->get_domain_info(pdb, mem_ctx);
238 }
239
240 /**
241 * @brief Check if the user account has been locked out and try to unlock it.
242 *
243 * If the user has been automatically locked out and a lockout duration is set,
244 * then check if we can unlock the account and reset the bad password values.
245 *
246 * @param[in] sampass The sam user to check.
247 *
248 * @return True if the function was successfull, false on an error.
249 */
250 static bool pdb_try_account_unlock(struct samu *sampass)
251 {
252 uint32_t acb_info = pdb_get_acct_ctrl(sampass);
253
254 if ((acb_info & ACB_NORMAL) && (acb_info & ACB_AUTOLOCK)) {
255 uint32_t lockout_duration;
256 time_t bad_password_time;
257 time_t now = time(NULL);
258 bool ok;
259
260 ok = pdb_get_account_policy(PDB_POLICY_LOCK_ACCOUNT_DURATION,
261 &lockout_duration);
262 if (!ok) {
263 DEBUG(0, ("pdb_try_account_unlock: "
264 "pdb_get_account_policy failed.\n"));
265 return false;
266 }
267
268 if (lockout_duration == (uint32_t) -1 ||
269 lockout_duration == 0) {
270 DEBUG(9, ("pdb_try_account_unlock: No reset duration, "
271 "can't reset autolock\n"));
272 return false;
273 }
274 lockout_duration *= 60;
275
276 bad_password_time = pdb_get_bad_password_time(sampass);
277 if (bad_password_time == (time_t) 0) {
278 DEBUG(2, ("pdb_try_account_unlock: Account %s "
279 "administratively locked out "
280 "with no bad password "
281 "time. Leaving locked out.\n",
282 pdb_get_username(sampass)));
283 return true;
284 }
285
286 if ((bad_password_time +
287 convert_uint32_t_to_time_t(lockout_duration)) < now) {
288 NTSTATUS status;
289
290 pdb_set_acct_ctrl(sampass, acb_info & ~ACB_AUTOLOCK,
291 PDB_CHANGED);
292 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
293 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
294
295 become_root();
296 status = pdb_update_sam_account(sampass);
297 unbecome_root();
298 if (!NT_STATUS_IS_OK(status)) {
299 DEBUG(0, ("_samr_OpenUser: Couldn't "
300 "update account %s - %s\n",
301 pdb_get_username(sampass),
302 nt_errstr(status)));
303 return false;
304 }
305 }
306 }
307
308 return true;
309 }
310
311 /**
312 * @brief Get a sam user structure by the given username.
313 *
314 * This functions also checks if the account has been automatically locked out
315 * and unlocks it if a lockout duration time has been defined and the time has
316 * elapsed.
317 *
318 * @param[in] sam_acct The sam user structure to fill.
319 *
320 * @param[in] username The username to look for.
321 *
322 * @return True on success, false on error.
323 */
324 bool pdb_getsampwnam(struct samu *sam_acct, const char *username)
325 {
326 struct pdb_methods *pdb = pdb_get_methods();
327 struct samu *for_cache;
328 const struct dom_sid *user_sid;
329 NTSTATUS status;
330 bool ok;
331
332 status = pdb->getsampwnam(pdb, sam_acct, username);
333 if (!NT_STATUS_IS_OK(status)) {
334 return false;
335 }
336
337 ok = pdb_try_account_unlock(sam_acct);
338 if (!ok) {
339 DEBUG(1, ("pdb_getsampwnam: Failed to unlock account %s\n",
340 username));
341 }
342
343 for_cache = samu_new(NULL);
344 if (for_cache == NULL) {
345 return False;
346 }
347
348 if (!pdb_copy_sam_account(for_cache, sam_acct)) {
349 TALLOC_FREE(for_cache);
350 return False;
351 }
352
353 user_sid = pdb_get_user_sid(for_cache);
354
355 memcache_add_talloc(NULL, PDB_GETPWSID_CACHE,
356 data_blob_const(user_sid, sizeof(*user_sid)),
357 &for_cache);
358
359 return True;
360 }
361
362 /**********************************************************************
363 **********************************************************************/
364
365 static bool guest_user_info( struct samu *user )
366 {
367 struct passwd *pwd;
368 NTSTATUS result;
369 const char *guestname = lp_guestaccount();
370
371 pwd = Get_Pwnam_alloc(talloc_tos(), guestname);
372 if (pwd == NULL) {
373 DEBUG(0,("guest_user_info: Unable to locate guest account [%s]!\n",
374 guestname));
375 return False;
376 }
377
378 result = samu_set_unix(user, pwd );
379
380 TALLOC_FREE( pwd );
381
382 return NT_STATUS_IS_OK( result );
383 }
384
385 /**
386 * @brief Get a sam user structure by the given username.
387 *
388 * This functions also checks if the account has been automatically locked out
389 * and unlocks it if a lockout duration time has been defined and the time has
390 * elapsed.
391 *
392 *
393 * @param[in] sam_acct The sam user structure to fill.
394 *
395 * @param[in] sid The user SDI to look up.
396 *
397 * @return True on success, false on error.
398 */
399 bool pdb_getsampwsid(struct samu *sam_acct, const struct dom_sid *sid)
400 {
401 struct pdb_methods *pdb = pdb_get_methods();
402 uint32_t rid;
403 void *cache_data;
404 bool ok = false;
405
406 /* hard code the Guest RID of 501 */
407
408 if ( !sid_peek_check_rid( get_global_sam_sid(), sid, &rid ) )
409 return False;
410
411 if ( rid == DOMAIN_RID_GUEST ) {
412 DEBUG(6,("pdb_getsampwsid: Building guest account\n"));
413 return guest_user_info( sam_acct );
414 }
415
416 /* check the cache first */
417
418 cache_data = memcache_lookup_talloc(
419 NULL, PDB_GETPWSID_CACHE, data_blob_const(sid, sizeof(*sid)));
420
421 if (cache_data != NULL) {
422 struct samu *cache_copy = talloc_get_type_abort(
423 cache_data, struct samu);
424
425 ok = pdb_copy_sam_account(sam_acct, cache_copy);
426 } else {
427 ok = NT_STATUS_IS_OK(pdb->getsampwsid(pdb, sam_acct, sid));
428 }
429
430 if (!ok) {
431 return false;
432 }
433
434 ok = pdb_try_account_unlock(sam_acct);
435 if (!ok) {
436 DEBUG(1, ("pdb_getsampwsid: Failed to unlock account %s\n",
437 sam_acct->username));
438 }
439
440 return true;
441 }
442
443 static NTSTATUS pdb_default_create_user(struct pdb_methods *methods,
444 TALLOC_CTX *tmp_ctx, const char *name,
445 uint32_t acb_info, uint32_t *rid)
446 {
447 struct samu *sam_pass;
448 NTSTATUS status;
449 struct passwd *pwd;
450
451 if ((sam_pass = samu_new(tmp_ctx)) == NULL) {
452 return NT_STATUS_NO_MEMORY;
453 }
454
455 if ( !(pwd = Get_Pwnam_alloc(tmp_ctx, name)) ) {
456 char *add_script = NULL;
457 int add_ret;
458 fstring name2;
459
460 if ((acb_info & ACB_NORMAL) && name[strlen(name)-1] != '$') {
461 add_script = lp_adduser_script(tmp_ctx);
462 } else {
463 add_script = lp_addmachine_script(tmp_ctx);
464 }
465
466 if (!add_script || add_script[0] == '\0') {
467 DEBUG(3, ("Could not find user %s and no add script "
468 "defined\n", name));
469 return NT_STATUS_NO_SUCH_USER;
470 }
471
472 /* lowercase the username before creating the Unix account for
473 compatibility with previous Samba releases */
474 fstrcpy( name2, name );
475 if (!strlower_m( name2 )) {
476 return NT_STATUS_INVALID_PARAMETER;
477 }
478 add_script = talloc_all_string_sub(tmp_ctx,
479 add_script,
480 "%u",
481 name2);
482 if (!add_script) {
483 return NT_STATUS_NO_MEMORY;
484 }
485 add_ret = smbrun(add_script,NULL);
486 DEBUG(add_ret ? 0 : 3, ("_samr_create_user: Running the command `%s' gave %d\n",
487 add_script, add_ret));
488 if (add_ret == 0) {
489 smb_nscd_flush_user_cache();
490 }
491
492 flush_pwnam_cache();
493
494 pwd = Get_Pwnam_alloc(tmp_ctx, name);
495
496 if(pwd == NULL) {
497 DEBUG(3, ("Could not find user %s, add script did not work\n", name));
498 return NT_STATUS_NO_SUCH_USER;
499 }
500 }
501
502 /* we have a valid SID coming out of this call */
503
504 status = samu_alloc_rid_unix(methods, sam_pass, pwd);
505
506 TALLOC_FREE( pwd );
507
508 if (!NT_STATUS_IS_OK(status)) {
509 DEBUG(3, ("pdb_default_create_user: failed to create a new user structure: %s\n", nt_errstr(status)));
510 return status;
511 }
512
513 if (!sid_peek_check_rid(get_global_sam_sid(),
514 pdb_get_user_sid(sam_pass), rid)) {
515 DEBUG(0, ("Could not get RID of fresh user\n"));
516 return NT_STATUS_INTERNAL_ERROR;
517 }
518
519 /* Use the username case specified in the original request */
520
521 pdb_set_username( sam_pass, name, PDB_SET );
522
523 /* Disable the account on creation, it does not have a reasonable password yet. */
524
525 acb_info |= ACB_DISABLED;
526
527 pdb_set_acct_ctrl(sam_pass, acb_info, PDB_CHANGED);
528
529 status = methods->add_sam_account(methods, sam_pass);
530
531 TALLOC_FREE(sam_pass);
532
533 return status;
534 }
535
536 NTSTATUS pdb_create_user(TALLOC_CTX *mem_ctx, const char *name, uint32_t flags,
537 uint32_t *rid)
538 {
539 struct pdb_methods *pdb = pdb_get_methods();
540 return pdb->create_user(pdb, mem_ctx, name, flags, rid);
541 }
542
543 /****************************************************************************
544 Delete a UNIX user on demand.
545 ****************************************************************************/
546
547 static int smb_delete_user(const char *unix_user)
548 {
549 char *del_script = NULL;
550 int ret;
551
552 /* safety check */
553
554 if ( strequal( unix_user, "root" ) ) {
555 DEBUG(0,("smb_delete_user: Refusing to delete local system root account!\n"));
556 return -1;
557 }
558
559 del_script = lp_deluser_script(talloc_tos());
560 if (!del_script || !*del_script) {
561 return -1;
562 }
563 del_script = talloc_all_string_sub(talloc_tos(),
564 del_script,
565 "%u",
566 unix_user);
567 if (!del_script) {
568 return -1;
569 }
570 ret = smbrun(del_script,NULL);
571 flush_pwnam_cache();
572 if (ret == 0) {
573 smb_nscd_flush_user_cache();
574 }
575 DEBUG(ret ? 0 : 3,("smb_delete_user: Running the command `%s' gave %d\n",del_script,ret));
576
577 return ret;
578 }
579
580 static NTSTATUS pdb_default_delete_user(struct pdb_methods *methods,
581 TALLOC_CTX *mem_ctx,
582 struct samu *sam_acct)
583 {
584 NTSTATUS status;
585 fstring username;
586
587 status = methods->delete_sam_account(methods, sam_acct);
588 if (!NT_STATUS_IS_OK(status)) {
589 return status;
590 }
591
592 /*
593 * Now delete the unix side ....
594 * note: we don't check if the delete really happened as the script is
595 * not necessary present and maybe the sysadmin doesn't want to delete
596 * the unix side
597 */
598
599 /* always lower case the username before handing it off to
600 external scripts */
601
602 fstrcpy( username, pdb_get_username(sam_acct) );
603 if (!strlower_m( username )) {
604 return status;
605 }
606
607 smb_delete_user( username );
608
609 return status;
610 }
611
612 NTSTATUS pdb_delete_user(TALLOC_CTX *mem_ctx, struct samu *sam_acct)
613 {
614 struct pdb_methods *pdb = pdb_get_methods();
615 uid_t uid = -1;
616 NTSTATUS status;
617 const struct dom_sid *user_sid;
618 char *msg_data;
619
620 user_sid = pdb_get_user_sid(sam_acct);
621
622 /* sanity check to make sure we don't delete root */
623
624 if ( !sid_to_uid(user_sid, &uid ) ) {
625 return NT_STATUS_NO_SUCH_USER;
626 }
627
628 if ( uid == 0 ) {
629 return NT_STATUS_ACCESS_DENIED;
630 }
631
632 memcache_delete(NULL,
633 PDB_GETPWSID_CACHE,
634 data_blob_const(user_sid, sizeof(*user_sid)));
635
636 status = pdb->delete_user(pdb, mem_ctx, sam_acct);
637 if (!NT_STATUS_IS_OK(status)) {
638 return status;
639 }
640
641 msg_data = talloc_asprintf(mem_ctx, "USER %s",
642 pdb_get_username(sam_acct));
643 if (!msg_data) {
644 /* not fatal, and too late to rollback,
645 * just return */
646 return status;
647 }
648 message_send_all(server_messaging_context(),
649 ID_CACHE_DELETE,
650 msg_data,
651 strlen(msg_data) + 1,
652 NULL);
653
654 TALLOC_FREE(msg_data);
655 return status;
656 }
657
658 NTSTATUS pdb_add_sam_account(struct samu *sam_acct)
659 {
660 struct pdb_methods *pdb = pdb_get_methods();
661 return pdb->add_sam_account(pdb, sam_acct);
662 }
663
664 NTSTATUS pdb_update_sam_account(struct samu *sam_acct)
665 {
666 struct pdb_methods *pdb = pdb_get_methods();
667
668 memcache_flush(NULL, PDB_GETPWSID_CACHE);
669
670 return pdb->update_sam_account(pdb, sam_acct);
671 }
672
673 NTSTATUS pdb_delete_sam_account(struct samu *sam_acct)
674 {
675 struct pdb_methods *pdb = pdb_get_methods();
676 const struct dom_sid *user_sid = pdb_get_user_sid(sam_acct);
677
678 memcache_delete(NULL,
679 PDB_GETPWSID_CACHE,
680 data_blob_const(user_sid, sizeof(*user_sid)));
681
682 return pdb->delete_sam_account(pdb, sam_acct);
683 }
684
685 NTSTATUS pdb_rename_sam_account(struct samu *oldname, const char *newname)
686 {
687 struct pdb_methods *pdb = pdb_get_methods();
688 uid_t uid;
689 NTSTATUS status;
690
691 memcache_flush(NULL, PDB_GETPWSID_CACHE);
692
693 /* sanity check to make sure we don't rename root */
694
695 if ( !sid_to_uid( pdb_get_user_sid(oldname), &uid ) ) {
696 return NT_STATUS_NO_SUCH_USER;
697 }
698
699 if ( uid == 0 ) {
700 return NT_STATUS_ACCESS_DENIED;
701 }
702
703 status = pdb->rename_sam_account(pdb, oldname, newname);
704
705 /* always flush the cache here just to be safe */
706 flush_pwnam_cache();
707
708 return status;
709 }
710
711 NTSTATUS pdb_update_login_attempts(struct samu *sam_acct, bool success)
712 {
713 struct pdb_methods *pdb = pdb_get_methods();
714 return pdb->update_login_attempts(pdb, sam_acct, success);
715 }
716
717 bool pdb_getgrsid(GROUP_MAP *map, struct dom_sid sid)
718 {
719 struct pdb_methods *pdb = pdb_get_methods();
720 return NT_STATUS_IS_OK(pdb->getgrsid(pdb, map, sid));
721 }
722
723 bool pdb_getgrgid(GROUP_MAP *map, gid_t gid)
724 {
725 struct pdb_methods *pdb = pdb_get_methods();
726 return NT_STATUS_IS_OK(pdb->getgrgid(pdb, map, gid));
727 }
728
729 bool pdb_getgrnam(GROUP_MAP *map, const char *name)
730 {
731 struct pdb_methods *pdb = pdb_get_methods();
732 return NT_STATUS_IS_OK(pdb->getgrnam(pdb, map, name));
733 }
734
735 static NTSTATUS pdb_default_create_dom_group(struct pdb_methods *methods,
736 TALLOC_CTX *mem_ctx,
737 const char *name,
738 uint32_t *rid)
739 {
740 struct dom_sid group_sid;
741 struct group *grp;
742 fstring tmp;
743
744 grp = getgrnam(name);
745
746 if (grp == NULL) {
747 gid_t gid;
748
749 if (smb_create_group(name, &gid) != 0) {
750 return NT_STATUS_ACCESS_DENIED;
751 }
752
753 grp = getgrgid(gid);
754 }
755
756 if (grp == NULL) {
757 return NT_STATUS_ACCESS_DENIED;
758 }
759
760 if (pdb_capabilities() & PDB_CAP_STORE_RIDS) {
761 if (!pdb_new_rid(rid)) {
762 return NT_STATUS_ACCESS_DENIED;
763 }
764 } else {
765 *rid = algorithmic_pdb_gid_to_group_rid( grp->gr_gid );
766 }
767
768 sid_compose(&group_sid, get_global_sam_sid(), *rid);
769
770 return add_initial_entry(grp->gr_gid, sid_to_fstring(tmp, &group_sid),
771 SID_NAME_DOM_GRP, name, NULL);
772 }
773
774 NTSTATUS pdb_create_dom_group(TALLOC_CTX *mem_ctx, const char *name,
775 uint32_t *rid)
776 {
777 struct pdb_methods *pdb = pdb_get_methods();
778 return pdb->create_dom_group(pdb, mem_ctx, name, rid);
779 }
780
781 static NTSTATUS pdb_default_delete_dom_group(struct pdb_methods *methods,
782 TALLOC_CTX *mem_ctx,
783 uint32_t rid)
784 {
785 struct dom_sid group_sid;
786 GROUP_MAP *map;
787 NTSTATUS status;
788 struct group *grp;
789 const char *grp_name;
790
791 map = talloc_zero(mem_ctx, GROUP_MAP);
792 if (!map) {
793 return NT_STATUS_NO_MEMORY;
794 }
795
796 /* coverity */
797 map->gid = (gid_t) -1;
798
799 sid_compose(&group_sid, get_global_sam_sid(), rid);
800
801 if (!get_domain_group_from_sid(group_sid, map)) {
802 DEBUG(10, ("Could not find group for rid %d\n", rid));
803 return NT_STATUS_NO_SUCH_GROUP;
804 }
805
806 /* We need the group name for the smb_delete_group later on */
807
808 if (map->gid == (gid_t)-1) {
809 return NT_STATUS_NO_SUCH_GROUP;
810 }
811
812 grp = getgrgid(map->gid);
813 if (grp == NULL) {
814 return NT_STATUS_NO_SUCH_GROUP;
815 }
816
817 TALLOC_FREE(map);
818
819 /* Copy the name, no idea what pdb_delete_group_mapping_entry does.. */
820
821 grp_name = talloc_strdup(mem_ctx, grp->gr_name);
822 if (grp_name == NULL) {
823 return NT_STATUS_NO_MEMORY;
824 }
825
826 status = pdb_delete_group_mapping_entry(group_sid);
827
828 if (!NT_STATUS_IS_OK(status)) {
829 return status;
830 }
831
832 /* Don't check the result of smb_delete_group */
833
834 smb_delete_group(grp_name);
835
836 return NT_STATUS_OK;
837 }
838
839 NTSTATUS pdb_delete_dom_group(TALLOC_CTX *mem_ctx, uint32_t rid)
840 {
841 struct pdb_methods *pdb = pdb_get_methods();
842 return pdb->delete_dom_group(pdb, mem_ctx, rid);
843 }
844
845 NTSTATUS pdb_add_group_mapping_entry(GROUP_MAP *map)
846 {
847 struct pdb_methods *pdb = pdb_get_methods();
848 return pdb->add_group_mapping_entry(pdb, map);
849 }
850
851 NTSTATUS pdb_update_group_mapping_entry(GROUP_MAP *map)
852 {
853 struct pdb_methods *pdb = pdb_get_methods();
854 return pdb->update_group_mapping_entry(pdb, map);
855 }
856
857 NTSTATUS pdb_delete_group_mapping_entry(struct dom_sid sid)
858 {
859 struct pdb_methods *pdb = pdb_get_methods();
860 return pdb->delete_group_mapping_entry(pdb, sid);
861 }
862
863 bool pdb_enum_group_mapping(const struct dom_sid *sid,
864 enum lsa_SidType sid_name_use,
865 GROUP_MAP ***pp_rmap,
866 size_t *p_num_entries,
867 bool unix_only)
868 {
869 struct pdb_methods *pdb = pdb_get_methods();
870 return NT_STATUS_IS_OK(pdb-> enum_group_mapping(pdb, sid, sid_name_use,
871 pp_rmap, p_num_entries, unix_only));
872 }
873
874 NTSTATUS pdb_enum_group_members(TALLOC_CTX *mem_ctx,
875 const struct dom_sid *sid,
876 uint32_t **pp_member_rids,
877 size_t *p_num_members)
878 {
879 struct pdb_methods *pdb = pdb_get_methods();
880 NTSTATUS result;
881
882 result = pdb->enum_group_members(pdb, mem_ctx,
883 sid, pp_member_rids, p_num_members);
884
885 /* special check for rid 513 */
886
887 if ( !NT_STATUS_IS_OK( result ) ) {
888 uint32_t rid;
889
890 sid_peek_rid( sid, &rid );
891
892 if ( rid == DOMAIN_RID_USERS ) {
893 *p_num_members = 0;
894 *pp_member_rids = NULL;
895
896 return NT_STATUS_OK;
897 }
898 }
899
900 return result;
901 }
902
903 NTSTATUS pdb_enum_group_memberships(TALLOC_CTX *mem_ctx, struct samu *user,
904 struct dom_sid **pp_sids, gid_t **pp_gids,
905 uint32_t *p_num_groups)
906 {
907 struct pdb_methods *pdb = pdb_get_methods();
908 return pdb->enum_group_memberships(
909 pdb, mem_ctx, user,
910 pp_sids, pp_gids, p_num_groups);
911 }
912
913 static NTSTATUS pdb_default_set_unix_primary_group(struct pdb_methods *methods,
914 TALLOC_CTX *mem_ctx,
915 struct samu *sampass)
916 {
917 struct group *grp;
918 gid_t gid;
919
920 if (!sid_to_gid(pdb_get_group_sid(sampass), &gid) ||
921 (grp = getgrgid(gid)) == NULL) {
922 return NT_STATUS_INVALID_PRIMARY_GROUP;
923 }
924
925 if (smb_set_primary_group(grp->gr_name,
926 pdb_get_username(sampass)) != 0) {
927 return NT_STATUS_ACCESS_DENIED;
928 }
929
930 return NT_STATUS_OK;
931 }
932
933 NTSTATUS pdb_set_unix_primary_group(TALLOC_CTX *mem_ctx, struct samu *user)
934 {
935 struct pdb_methods *pdb = pdb_get_methods();
936 return pdb->set_unix_primary_group(pdb, mem_ctx, user);
937 }
938
939 /*
940 * Helper function to see whether a user is in a group. We can't use
941 * user_in_group_sid here because this creates dependencies only smbd can
942 * fulfil.
943 */
944
945 static bool pdb_user_in_group(TALLOC_CTX *mem_ctx, struct samu *account,
946 const struct dom_sid *group_sid)
947 {
948 struct dom_sid *sids;
949 gid_t *gids;
950 uint32_t i, num_groups;
951
952 if (!NT_STATUS_IS_OK(pdb_enum_group_memberships(mem_ctx, account,
953 &sids, &gids,
954 &num_groups))) {
955 return False;
956 }
957
958 for (i=0; i<num_groups; i++) {
959 if (dom_sid_equal(group_sid, &sids[i])) {
960 return True;
961 }
962 }
963 return False;
964 }
965
966 static NTSTATUS pdb_default_add_groupmem(struct pdb_methods *methods,
967 TALLOC_CTX *mem_ctx,
968 uint32_t group_rid,
969 uint32_t member_rid)
970 {
971 struct dom_sid group_sid, member_sid;
972 struct samu *account = NULL;
973 GROUP_MAP *map;
974 struct group *grp;
975 struct passwd *pwd;
976 const char *group_name;
977 uid_t uid;
978
979 map = talloc_zero(mem_ctx, GROUP_MAP);
980 if (!map) {
981 return NT_STATUS_NO_MEMORY;
982 }
983
984 /* coverity */
985 map->gid = (gid_t) -1;
986
987 sid_compose(&group_sid, get_global_sam_sid(), group_rid);
988 sid_compose(&member_sid, get_global_sam_sid(), member_rid);
989
990 if (!get_domain_group_from_sid(group_sid, map) ||
991 (map->gid == (gid_t)-1) ||
992 ((grp = getgrgid(map->gid)) == NULL)) {
993 return NT_STATUS_NO_SUCH_GROUP;
994 }
995
996 TALLOC_FREE(map);
997
998 group_name = talloc_strdup(mem_ctx, grp->gr_name);
999 if (group_name == NULL) {
1000 return NT_STATUS_NO_MEMORY;
1001 }
1002
1003 if ( !(account = samu_new( NULL )) ) {
1004 return NT_STATUS_NO_MEMORY;
1005 }
1006
1007 if (!pdb_getsampwsid(account, &member_sid) ||
1008 !sid_to_uid(&member_sid, &uid) ||
1009 ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
1010 return NT_STATUS_NO_SUCH_USER;
1011 }
1012
1013 if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
1014 return NT_STATUS_MEMBER_IN_GROUP;
1015 }
1016
1017 /*
1018 * ok, the group exist, the user exist, the user is not in the group,
1019 * we can (finally) add it to the group !
1020 */
1021
1022 smb_add_user_group(group_name, pwd->pw_name);
1023
1024 if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
1025 return NT_STATUS_ACCESS_DENIED;
1026 }
1027
1028 return NT_STATUS_OK;
1029 }
1030
1031 NTSTATUS pdb_add_groupmem(TALLOC_CTX *mem_ctx, uint32_t group_rid,
1032 uint32_t member_rid)
1033 {
1034 struct pdb_methods *pdb = pdb_get_methods();
1035 return pdb->add_groupmem(pdb, mem_ctx, group_rid, member_rid);
1036 }
1037
1038 static NTSTATUS pdb_default_del_groupmem(struct pdb_methods *methods,
1039 TALLOC_CTX *mem_ctx,
1040 uint32_t group_rid,
1041 uint32_t member_rid)
1042 {
1043 struct dom_sid group_sid, member_sid;
1044 struct samu *account = NULL;
1045 GROUP_MAP *map;
1046 struct group *grp;
1047 struct passwd *pwd;
1048 const char *group_name;
1049 uid_t uid;
1050
1051 map = talloc_zero(mem_ctx, GROUP_MAP);
1052 if (!map) {
1053 return NT_STATUS_NO_MEMORY;
1054 }
1055
1056 sid_compose(&group_sid, get_global_sam_sid(), group_rid);
1057 sid_compose(&member_sid, get_global_sam_sid(), member_rid);
1058
1059 if (!get_domain_group_from_sid(group_sid, map) ||
1060 (map->gid == (gid_t)-1) ||
1061 ((grp = getgrgid(map->gid)) == NULL)) {
1062 return NT_STATUS_NO_SUCH_GROUP;
1063 }
1064
1065 TALLOC_FREE(map);
1066
1067 group_name = talloc_strdup(mem_ctx, grp->gr_name);
1068 if (group_name == NULL) {
1069 return NT_STATUS_NO_MEMORY;
1070 }
1071
1072 if ( !(account = samu_new( NULL )) ) {
1073 return NT_STATUS_NO_MEMORY;
1074 }
1075
1076 if (!pdb_getsampwsid(account, &member_sid) ||
1077 !sid_to_uid(&member_sid, &uid) ||
1078 ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
1079 return NT_STATUS_NO_SUCH_USER;
1080 }
1081
1082 if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
1083 return NT_STATUS_MEMBER_NOT_IN_GROUP;
1084 }
1085
1086 /*
1087 * ok, the group exist, the user exist, the user is in the group,
1088 * we can (finally) delete it from the group!
1089 */
1090
1091 smb_delete_user_group(group_name, pwd->pw_name);
1092
1093 if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
1094 return NT_STATUS_ACCESS_DENIED;
1095 }
1096
1097 return NT_STATUS_OK;
1098 }
1099
1100 NTSTATUS pdb_del_groupmem(TALLOC_CTX *mem_ctx, uint32_t group_rid,
1101 uint32_t member_rid)
1102 {
1103 struct pdb_methods *pdb = pdb_get_methods();
1104 return pdb->del_groupmem(pdb, mem_ctx, group_rid, member_rid);
1105 }
1106
1107 NTSTATUS pdb_create_alias(const char *name, uint32_t *rid)
1108 {
1109 struct pdb_methods *pdb = pdb_get_methods();
1110 return pdb->create_alias(pdb, name, rid);
1111 }
1112
1113 NTSTATUS pdb_delete_alias(const struct dom_sid *sid)
1114 {
1115 struct pdb_methods *pdb = pdb_get_methods();
1116 return pdb->delete_alias(pdb, sid);
1117 }
1118
1119 NTSTATUS pdb_get_aliasinfo(const struct dom_sid *sid, struct acct_info *info)
1120 {
1121 struct pdb_methods *pdb = pdb_get_methods();
1122 return pdb->get_aliasinfo(pdb, sid, info);
1123 }
1124
1125 NTSTATUS pdb_set_aliasinfo(const struct dom_sid *sid, struct acct_info *info)
1126 {
1127 struct pdb_methods *pdb = pdb_get_methods();
1128 return pdb->set_aliasinfo(pdb, sid, info);
1129 }
1130
1131 NTSTATUS pdb_add_aliasmem(const struct dom_sid *alias, const struct dom_sid *member)
1132 {
1133 struct pdb_methods *pdb = pdb_get_methods();
1134 return pdb->add_aliasmem(pdb, alias, member);
1135 }
1136
1137 NTSTATUS pdb_del_aliasmem(const struct dom_sid *alias, const struct dom_sid *member)
1138 {
1139 struct pdb_methods *pdb = pdb_get_methods();
1140 return pdb->del_aliasmem(pdb, alias, member);
1141 }
1142
1143 NTSTATUS pdb_enum_aliasmem(const struct dom_sid *alias, TALLOC_CTX *mem_ctx,
1144 struct dom_sid **pp_members, size_t *p_num_members)
1145 {
1146 struct pdb_methods *pdb = pdb_get_methods();
1147 return pdb->enum_aliasmem(pdb, alias, mem_ctx, pp_members,
1148 p_num_members);
1149 }
1150
1151 NTSTATUS pdb_enum_alias_memberships(TALLOC_CTX *mem_ctx,
1152 const struct dom_sid *domain_sid,
1153 const struct dom_sid *members, size_t num_members,
1154 uint32_t **pp_alias_rids,
1155 size_t *p_num_alias_rids)
1156 {
1157 struct pdb_methods *pdb = pdb_get_methods();
1158 return pdb->enum_alias_memberships(pdb, mem_ctx,
1159 domain_sid,
1160 members, num_members,
1161 pp_alias_rids,
1162 p_num_alias_rids);
1163 }
1164
1165 NTSTATUS pdb_lookup_rids(const struct dom_sid *domain_sid,
1166 int num_rids,
1167 uint32_t *rids,
1168 const char **names,
1169 enum lsa_SidType *attrs)
1170 {
1171 struct pdb_methods *pdb = pdb_get_methods();
1172 return pdb->lookup_rids(pdb, domain_sid, num_rids, rids, names, attrs);
1173 }
1174
1175 bool pdb_get_account_policy(enum pdb_policy_type type, uint32_t *value)
1176 {
1177 struct pdb_methods *pdb = pdb_get_methods();
1178 NTSTATUS status;
1179
1180 become_root();
1181 status = pdb->get_account_policy(pdb, type, value);
1182 unbecome_root();
1183
1184 return NT_STATUS_IS_OK(status);
1185 }
1186
1187 bool pdb_set_account_policy(enum pdb_policy_type type, uint32_t value)
1188 {
1189 struct pdb_methods *pdb = pdb_get_methods();
1190 NTSTATUS status;
1191
1192 become_root();
1193 status = pdb->set_account_policy(pdb, type, value);
1194 unbecome_root();
1195
1196 return NT_STATUS_IS_OK(status);
1197 }
1198
1199 bool pdb_get_seq_num(time_t *seq_num)
1200 {
1201 struct pdb_methods *pdb = pdb_get_methods();
1202 return NT_STATUS_IS_OK(pdb->get_seq_num(pdb, seq_num));
1203 }
1204
1205 bool pdb_uid_to_sid(uid_t uid, struct dom_sid *sid)
1206 {
1207 struct pdb_methods *pdb = pdb_get_methods();
1208 return pdb->uid_to_sid(pdb, uid, sid);
1209 }
1210
1211 bool pdb_gid_to_sid(gid_t gid, struct dom_sid *sid)
1212 {
1213 struct pdb_methods *pdb = pdb_get_methods();
1214 return pdb->gid_to_sid(pdb, gid, sid);
1215 }
1216
1217 bool pdb_sid_to_id(const struct dom_sid *sid, struct unixid *id)
1218 {
1219 struct pdb_methods *pdb = pdb_get_methods();
1220 return pdb->sid_to_id(pdb, sid, id);
1221 }
1222
1223 uint32_t pdb_capabilities(void)
1224 {
1225 struct pdb_methods *pdb = pdb_get_methods();
1226 return pdb->capabilities(pdb);
1227 }
1228
1229 /********************************************************************
1230 Allocate a new RID from the passdb backend. Verify that it is free
1231 by calling lookup_global_sam_rid() to verify that the RID is not
1232 in use. This handles servers that have existing users or groups
1233 with add RIDs (assigned from previous algorithmic mappings)
1234 ********************************************************************/
1235
1236 bool pdb_new_rid(uint32_t *rid)
1237 {
1238 struct pdb_methods *pdb = pdb_get_methods();
1239 const char *name = NULL;
1240 enum lsa_SidType type;
1241 uint32_t allocated_rid = 0;
1242 int i;
1243 TALLOC_CTX *ctx;
1244
1245 if ((pdb_capabilities() & PDB_CAP_STORE_RIDS) == 0) {
1246 DEBUG(0, ("Trying to allocate a RID when algorithmic RIDs "
1247 "are active\n"));
1248 return False;
1249 }
1250
1251 if (algorithmic_rid_base() != BASE_RID) {
1252 DEBUG(0, ("'algorithmic rid base' is set but a passdb backend "
1253 "without algorithmic RIDs is chosen.\n"));
1254 DEBUGADD(0, ("Please map all used groups using 'net groupmap "
1255 "add', set the maximum used RID\n"));
1256 DEBUGADD(0, ("and remove the parameter\n"));
1257 return False;
1258 }
1259
1260 if ( (ctx = talloc_init("pdb_new_rid")) == NULL ) {
1261 DEBUG(0,("pdb_new_rid: Talloc initialization failure\n"));
1262 return False;
1263 }
1264
1265 /* Attempt to get an unused RID (max tires is 250...yes that it is
1266 and arbitrary number I pulkled out of my head). -- jerry */
1267
1268 for ( i=0; allocated_rid==0 && i<250; i++ ) {
1269 /* get a new RID */
1270
1271 if ( !pdb->new_rid(pdb, &allocated_rid) ) {
1272 return False;
1273 }
1274
1275 /* validate that the RID is not in use */
1276
1277 if (lookup_global_sam_rid(ctx, allocated_rid, &name, &type, NULL, NULL)) {
1278 allocated_rid = 0;
1279 }
1280 }
1281
1282 TALLOC_FREE( ctx );
1283
1284 if ( allocated_rid == 0 ) {
1285 DEBUG(0,("pdb_new_rid: Failed to find unused RID\n"));
1286 return False;
1287 }
1288
1289 *rid = allocated_rid;
1290
1291 return True;
1292 }
1293
1294 /***************************************************************
1295 Initialize the static context (at smbd startup etc).
1296
1297 If uninitialised, context will auto-init on first use.
1298 ***************************************************************/
1299
1300 bool initialize_password_db(bool reload, struct tevent_context *tevent_ctx)
1301 {
1302 if (tevent_ctx) {
1303 pdb_tevent_ctx = tevent_ctx;
1304 }
1305 return (pdb_get_methods_reload(reload) != NULL);
1306 }
1307
1308 /***************************************************************************
1309 Default implementations of some functions.
1310 ****************************************************************************/
1311
1312 static NTSTATUS pdb_default_getsampwnam (struct pdb_methods *methods, struct samu *user, const char *sname)
1313 {
1314 return NT_STATUS_NO_SUCH_USER;
1315 }
1316
1317 static NTSTATUS pdb_default_getsampwsid(struct pdb_methods *my_methods, struct samu * user, const struct dom_sid *sid)
1318 {
1319 return NT_STATUS_NO_SUCH_USER;
1320 }
1321
1322 static NTSTATUS pdb_default_add_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1323 {
1324 return NT_STATUS_NOT_IMPLEMENTED;
1325 }
1326
1327 static NTSTATUS pdb_default_update_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1328 {
1329 return NT_STATUS_NOT_IMPLEMENTED;
1330 }
1331
1332 static NTSTATUS pdb_default_delete_sam_account (struct pdb_methods *methods, struct samu *pwd)
1333 {
1334 return NT_STATUS_NOT_IMPLEMENTED;
1335 }
1336
1337 static NTSTATUS pdb_default_rename_sam_account (struct pdb_methods *methods, struct samu *pwd, const char *newname)
1338 {
1339 return NT_STATUS_NOT_IMPLEMENTED;
1340 }
1341
1342 static NTSTATUS pdb_default_update_login_attempts (struct pdb_methods *methods, struct samu *newpwd, bool success)
1343 {
1344 /* Only the pdb_nds backend implements this, by
1345 * default just return ok. */
1346 return NT_STATUS_OK;
1347 }
1348
1349 static NTSTATUS pdb_default_get_account_policy(struct pdb_methods *methods, enum pdb_policy_type type, uint32_t *value)
1350 {
1351 return account_policy_get(type, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1352 }
1353
1354 static NTSTATUS pdb_default_set_account_policy(struct pdb_methods *methods, enum pdb_policy_type type, uint32_t value)
1355 {
1356 return account_policy_set(type, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1357 }
1358
1359 static NTSTATUS pdb_default_get_seq_num(struct pdb_methods *methods, time_t *seq_num)
1360 {
1361 *seq_num = time(NULL);
1362 return NT_STATUS_OK;
1363 }
1364
1365 static bool pdb_default_uid_to_sid(struct pdb_methods *methods, uid_t uid,
1366 struct dom_sid *sid)
1367 {
1368 struct samu *sampw = NULL;
1369 struct passwd *unix_pw;
1370 bool ret;
1371
1372 unix_pw = getpwuid( uid );
1373
1374 if ( !unix_pw ) {
1375 DEBUG(4,("pdb_default_uid_to_sid: host has no idea of uid "
1376 "%lu\n", (unsigned long)uid));
1377 return False;
1378 }
1379
1380 if ( !(sampw = samu_new( NULL )) ) {
1381 DEBUG(0,("pdb_default_uid_to_sid: samu_new() failed!\n"));
1382 return False;
1383 }
1384
1385 become_root();
1386 ret = NT_STATUS_IS_OK(
1387 methods->getsampwnam(methods, sampw, unix_pw->pw_name ));
1388 unbecome_root();
1389
1390 if (!ret) {
1391 DEBUG(5, ("pdb_default_uid_to_sid: Did not find user "
1392 "%s (%u)\n", unix_pw->pw_name, (unsigned int)uid));
1393 TALLOC_FREE(sampw);
1394 return False;
1395 }
1396
1397 sid_copy(sid, pdb_get_user_sid(sampw));
1398
1399 TALLOC_FREE(sampw);
1400
1401 return True;
1402 }
1403
1404 static bool pdb_default_gid_to_sid(struct pdb_methods *methods, gid_t gid,
1405 struct dom_sid *sid)
1406 {
1407 GROUP_MAP *map;
1408
1409 map = talloc_zero(NULL, GROUP_MAP);
1410 if (!map) {
1411 return false;
1412 }
1413
1414 if (!NT_STATUS_IS_OK(methods->getgrgid(methods, map, gid))) {
1415 TALLOC_FREE(map);
1416 return false;
1417 }
1418
1419 sid_copy(sid, &map->sid);
1420 TALLOC_FREE(map);
1421 return true;
1422 }
1423
1424 /**
1425 * The "Unix User" and "Unix Group" domains have a special
1426 * id mapping that is a rid-algorithm with range starting at 0.
1427 */
1428 bool pdb_sid_to_id_unix_users_and_groups(const struct dom_sid *sid,
1429 struct unixid *id)
1430 {
1431 uint32_t rid;
1432
1433 id->id = -1;
1434
1435 if (sid_peek_check_rid(&global_sid_Unix_Users, sid, &rid)) {
1436 id->id = rid;
1437 id->type = ID_TYPE_UID;
1438 return true;
1439 }
1440
1441 if (sid_peek_check_rid(&global_sid_Unix_Groups, sid, &rid)) {
1442 id->id = rid;
1443 id->type = ID_TYPE_GID;
1444 return true;
1445 }
1446
1447 return false;
1448 }
1449
1450 static bool pdb_default_sid_to_id(struct pdb_methods *methods,
1451 const struct dom_sid *sid,
1452 struct unixid *id)
1453 {
1454 TALLOC_CTX *mem_ctx;
1455 bool ret = False;
1456 uint32_t rid;
1457 id->id = -1;
1458
1459 mem_ctx = talloc_new(NULL);
1460
1461 if (mem_ctx == NULL) {
1462 DEBUG(0, ("talloc_new failed\n"));
1463 return False;
1464 }
1465
1466 if (sid_peek_check_rid(get_global_sam_sid(), sid, &rid)) {
1467 const char *name;
1468 enum lsa_SidType type;
1469 uid_t uid;
1470 gid_t gid;
1471 /* Here we might have users as well as groups and aliases */
1472 ret = lookup_global_sam_rid(mem_ctx, rid, &name, &type, &uid, &gid);
1473 if (ret) {
1474 switch (type) {
1475 case SID_NAME_DOM_GRP:
1476 case SID_NAME_ALIAS:
1477 id->type = ID_TYPE_GID;
1478 id->id = gid;
1479 break;
1480 case SID_NAME_USER:
1481 id->type = ID_TYPE_UID;
1482 id->id = uid;
1483 break;
1484 default:
1485 DEBUG(5, ("SID %s is our domain, but is not mapped to a user or group (got %d)\n",
1486 sid_string_dbg(sid), type));
1487 ret = false;
1488 }
1489 } else {
1490 DEBUG(5, ("SID %s is or domain, but is unmapped\n",
1491 sid_string_dbg(sid)));
1492 }
1493 goto done;
1494 }
1495
1496 /*
1497 * "Unix User" and "Unix Group"
1498 */
1499 ret = pdb_sid_to_id_unix_users_and_groups(sid, id);
1500 if (ret == true) {
1501 goto done;
1502 }
1503
1504 /* BUILTIN */
1505
1506 if (sid_check_is_in_builtin(sid) ||
1507 sid_check_is_in_wellknown_domain(sid)) {
1508 /* Here we only have aliases */
1509 GROUP_MAP *map;
1510
1511 map = talloc_zero(mem_ctx, GROUP_MAP);
1512 if (!map) {
1513 ret = false;
1514 goto done;
1515 }
1516
1517 if (!NT_STATUS_IS_OK(methods->getgrsid(methods, map, *sid))) {
1518 DEBUG(10, ("Could not find map for sid %s\n",
1519 sid_string_dbg(sid)));
1520 goto done;
1521 }
1522 if ((map->sid_name_use != SID_NAME_ALIAS) &&
1523 (map->sid_name_use != SID_NAME_WKN_GRP)) {
1524 DEBUG(10, ("Map for sid %s is a %s, expected an "
1525 "alias\n", sid_string_dbg(sid),
1526 sid_type_lookup(map->sid_name_use)));
1527 goto done;
1528 }
1529
1530 id->id = map->gid;
1531 id->type = ID_TYPE_GID;
1532 ret = True;
1533 goto done;
1534 }
1535
1536 DEBUG(5, ("Sid %s is neither ours, a Unix SID, nor builtin\n",
1537 sid_string_dbg(sid)));
1538
1539 done:
1540
1541 TALLOC_FREE(mem_ctx);
1542 return ret;
1543 }
1544
1545 static bool get_memberuids(TALLOC_CTX *mem_ctx, gid_t gid, uid_t **pp_uids, uint32_t *p_num)
1546 {
1547 struct group *grp;
1548 char **gr;
1549 struct passwd *pwd;
1550 bool winbind_env;
1551 bool ret = False;
1552
1553 *pp_uids = NULL;
1554 *p_num = 0;
1555
1556 /* We only look at our own sam, so don't care about imported stuff */
1557 winbind_env = winbind_env_set();
1558 (void)winbind_off();
1559
1560 if ((grp = getgrgid(gid)) == NULL) {
1561 /* allow winbindd lookups, but only if they weren't already disabled */
1562 goto done;
1563 }
1564
1565 /* Primary group members */
1566 setpwent();
1567 while ((pwd = getpwent()) != NULL) {
1568 if (pwd->pw_gid == gid) {
1569 if (!add_uid_to_array_unique(mem_ctx, pwd->pw_uid,
1570 pp_uids, p_num)) {
1571 goto done;
1572 }
1573 }
1574 }
1575 endpwent();
1576
1577 /* Secondary group members */
1578 for (gr = grp->gr_mem; (*gr != NULL) && ((*gr)[0] != '\0'); gr += 1) {
1579 struct passwd *pw = getpwnam(*gr);
1580
1581 if (pw == NULL)
1582 continue;
1583 if (!add_uid_to_array_unique(mem_ctx, pw->pw_uid, pp_uids, p_num)) {
1584 goto done;
1585 }
1586 }
1587
1588 ret = True;
1589
1590 done:
1591
1592 /* allow winbindd lookups, but only if they weren't already disabled */
1593 if (!winbind_env) {
1594 (void)winbind_on();
1595 }
1596
1597 return ret;
1598 }
1599
1600 static NTSTATUS pdb_default_enum_group_members(struct pdb_methods *methods,
1601 TALLOC_CTX *mem_ctx,
1602 const struct dom_sid *group,
1603 uint32_t **pp_member_rids,
1604 size_t *p_num_members)
1605 {
1606 gid_t gid;
1607 uid_t *uids;
1608 uint32_t i, num_uids;
1609
1610 *pp_member_rids = NULL;
1611 *p_num_members = 0;
1612
1613 if (!sid_to_gid(group, &gid))
1614 return NT_STATUS_NO_SUCH_GROUP;
1615
1616 if(!get_memberuids(mem_ctx, gid, &uids, &num_uids))
1617 return NT_STATUS_NO_SUCH_GROUP;
1618
1619 if (num_uids == 0)
1620 return NT_STATUS_OK;
1621
1622 *pp_member_rids = talloc_zero_array(mem_ctx, uint32_t, num_uids);
1623
1624 for (i=0; i<num_uids; i++) {
1625 struct dom_sid sid;
1626
1627 uid_to_sid(&sid, uids[i]);
1628
1629 if (!sid_check_is_in_our_sam(&sid)) {
1630 DEBUG(5, ("Inconsistent SAM -- group member uid not "
1631 "in our domain\n"));
1632 continue;
1633 }
1634
1635 sid_peek_rid(&sid, &(*pp_member_rids)[*p_num_members]);
1636 *p_num_members += 1;
1637 }
1638
1639 return NT_STATUS_OK;
1640 }
1641
1642 static NTSTATUS pdb_default_enum_group_memberships(struct pdb_methods *methods,
1643 TALLOC_CTX *mem_ctx,
1644 struct samu *user,
1645 struct dom_sid **pp_sids,
1646 gid_t **pp_gids,
1647 uint32_t *p_num_groups)
1648 {
1649 size_t i;
1650 gid_t gid;
1651 struct passwd *pw;
1652 const char *username = pdb_get_username(user);
1653
1654
1655 /* Ignore the primary group SID. Honor the real Unix primary group.
1656 The primary group SID is only of real use to Windows clients */
1657
1658 if ( !(pw = Get_Pwnam_alloc(mem_ctx, username)) ) {
1659 return NT_STATUS_NO_SUCH_USER;
1660 }
1661
1662 gid = pw->pw_gid;
1663
1664 TALLOC_FREE( pw );
1665
1666 if (!getgroups_unix_user(mem_ctx, username, gid, pp_gids, p_num_groups)) {
1667 return NT_STATUS_NO_SUCH_USER;
1668 }
1669
1670 if (*p_num_groups == 0) {
1671 smb_panic("primary group missing");
1672 }
1673
1674 *pp_sids = talloc_array(mem_ctx, struct dom_sid, *p_num_groups);
1675
1676 if (*pp_sids == NULL) {
1677 TALLOC_FREE(*pp_gids);
1678 return NT_STATUS_NO_MEMORY;
1679 }
1680
1681 for (i=0; i<*p_num_groups; i++) {
1682 gid_to_sid(&(*pp_sids)[i], (*pp_gids)[i]);
1683 }
1684
1685 return NT_STATUS_OK;
1686 }
1687
1688 /*******************************************************************
1689 Look up a rid in the SAM we're responsible for (i.e. passdb)
1690 ********************************************************************/
1691
1692 static bool lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32_t rid,
1693 const char **name,
1694 enum lsa_SidType *psid_name_use,
1695 uid_t *uid, gid_t *gid)
1696 {
1697 struct samu *sam_account = NULL;
1698 GROUP_MAP *map = NULL;
1699 bool ret;
1700 struct dom_sid sid;
1701
1702 *psid_name_use = SID_NAME_UNKNOWN;
1703
1704 DEBUG(5,("lookup_global_sam_rid: looking up RID %u.\n",
1705 (unsigned int)rid));
1706
1707 sid_compose(&sid, get_global_sam_sid(), rid);
1708
1709 /* see if the passdb can help us with the name of the user */
1710
1711 if ( !(sam_account = samu_new( NULL )) ) {
1712 return False;
1713 }
1714
1715 map = talloc_zero(mem_ctx, GROUP_MAP);
1716 if (!map) {
1717 return false;
1718 }
1719
1720 /* BEING ROOT BLOCK */
1721 become_root();
1722 ret = pdb_getsampwsid(sam_account, &sid);
1723 if (!ret) {
1724 TALLOC_FREE(sam_account);
1725 ret = pdb_getgrsid(map, sid);
1726 }
1727 unbecome_root();
1728 /* END BECOME_ROOT BLOCK */
1729
1730 if (sam_account || !ret) {
1731 TALLOC_FREE(map);
1732 }
1733
1734 if (sam_account) {
1735 struct passwd *pw;
1736
1737 *name = talloc_strdup(mem_ctx, pdb_get_username(sam_account));
1738 if (!*name) {
1739 TALLOC_FREE(sam_account);
1740 return False;
1741 }
1742
1743 *psid_name_use = SID_NAME_USER;
1744
1745 TALLOC_FREE(sam_account);
1746
1747 if (uid == NULL) {
1748 return True;
1749 }
1750
1751 pw = Get_Pwnam_alloc(talloc_tos(), *name);
1752 if (pw == NULL) {
1753 return False;
1754 }
1755 *uid = pw->pw_uid;
1756 TALLOC_FREE(pw);
1757 return True;
1758
1759 } else if (map && (map->gid != (gid_t)-1)) {
1760
1761 /* do not resolve SIDs to a name unless there is a valid
1762 gid associated with it */
1763
1764 *name = talloc_steal(mem_ctx, map->nt_name);
1765 *psid_name_use = map->sid_name_use;
1766
1767 if (gid) {
1768 *gid = map->gid;
1769 }
1770
1771 TALLOC_FREE(map);
1772 return True;
1773 }
1774
1775 TALLOC_FREE(map);
1776
1777 /* Windows will always map RID 513 to something. On a non-domain
1778 controller, this gets mapped to SERVER\None. */
1779
1780 if (uid || gid) {
1781 DEBUG(5, ("Can't find a unix id for an unmapped group\n"));
1782 return False;
1783 }
1784
1785 if ( rid == DOMAIN_RID_USERS ) {
1786 *name = talloc_strdup(mem_ctx, "None" );
1787 *psid_name_use = SID_NAME_DOM_GRP;
1788
1789 return True;
1790 }
1791
1792 return False;
1793 }
1794
1795 static NTSTATUS pdb_default_lookup_rids(struct pdb_methods *methods,
1796 const struct dom_sid *domain_sid,
1797 int num_rids,
1798 uint32_t *rids,
1799 const char **names,
1800 enum lsa_SidType *attrs)
1801 {
1802 int i;
1803 NTSTATUS result;
1804 bool have_mapped = False;
1805 bool have_unmapped = False;
1806
1807 if (sid_check_is_builtin(domain_sid)) {
1808
1809 for (i=0; i<num_rids; i++) {
1810 const char *name;
1811
1812 if (lookup_builtin_rid(names, rids[i], &name)) {
1813 attrs[i] = SID_NAME_ALIAS;
1814 names[i] = name;
1815 DEBUG(5,("lookup_rids: %s:%d\n",
1816 names[i], attrs[i]));
1817 have_mapped = True;
1818 } else {
1819 have_unmapped = True;
1820 attrs[i] = SID_NAME_UNKNOWN;
1821 }
1822 }
1823 goto done;
1824 }
1825
1826 /* Should not happen, but better check once too many */
1827 if (!sid_check_is_our_sam(domain_sid)) {
1828 return NT_STATUS_INVALID_HANDLE;
1829 }
1830
1831 for (i = 0; i < num_rids; i++) {
1832 const char *name;
1833
1834 if (lookup_global_sam_rid(names, rids[i], &name, &attrs[i],
1835 NULL, NULL)) {
1836 if (name == NULL) {
1837 return NT_STATUS_NO_MEMORY;
1838 }
1839 names[i] = name;
1840 DEBUG(5,("lookup_rids: %s:%d\n", names[i], attrs[i]));
1841 have_mapped = True;
1842 } else {
1843 have_unmapped = True;
1844 attrs[i] = SID_NAME_UNKNOWN;
1845 }
1846 }
1847
1848 done:
1849
1850 result = NT_STATUS_NONE_MAPPED;
1851
1852 if (have_mapped)
1853 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1854
1855 return result;
1856 }
1857
1858 static int pdb_search_destructor(struct pdb_search *search)
1859 {
1860 if ((!search->search_ended) && (search->search_end != NULL)) {
1861 search->search_end(search);
1862 }
1863 return 0;
1864 }
1865
1866 struct pdb_search *pdb_search_init(TALLOC_CTX *mem_ctx,
1867 enum pdb_search_type type)
1868 {
1869 struct pdb_search *result;
1870
1871 result = talloc(mem_ctx, struct pdb_search);
1872 if (result == NULL) {
1873 DEBUG(0, ("talloc failed\n"));
1874 return NULL;
1875 }
1876
1877 result->type = type;
1878 result->cache = NULL;
1879 result->num_entries = 0;
1880 result->cache_size = 0;
1881 result->search_ended = False;
1882 result->search_end = NULL;
1883
1884 /* Segfault appropriately if not initialized */
1885 result->next_entry = NULL;
1886 result->search_end = NULL;
1887
1888 talloc_set_destructor(result, pdb_search_destructor);
1889
1890 return result;
1891 }
1892
1893 static void fill_displayentry(TALLOC_CTX *mem_ctx, uint32_t rid,
1894 uint16_t acct_flags,
1895 const char *account_name,
1896 const char *fullname,
1897 const char *description,
1898 struct samr_displayentry *entry)
1899 {
1900 entry->rid = rid;
1901 entry->acct_flags = acct_flags;
1902
1903 if (account_name != NULL)
1904 entry->account_name = talloc_strdup(mem_ctx, account_name);
1905 else
1906 entry->account_name = "";
1907
1908 if (fullname != NULL)
1909 entry->fullname = talloc_strdup(mem_ctx, fullname);
1910 else
1911 entry->fullname = "";
1912
1913 if (description != NULL)
1914 entry->description = talloc_strdup(mem_ctx, description);
1915 else
1916 entry->description = "";
1917 }
1918
1919 struct group_search {
1920 GROUP_MAP **groups;
1921 size_t num_groups, current_group;
1922 };
1923
1924 static bool next_entry_groups(struct pdb_search *s,
1925 struct samr_displayentry *entry)
1926 {
1927 struct group_search *state = (struct group_search *)s->private_data;
1928 uint32_t rid;
1929 GROUP_MAP *map;
1930
1931 if (state->current_group == state->num_groups)
1932 return False;
1933
1934 map = state->groups[state->current_group];
1935
1936 sid_peek_rid(&map->sid, &rid);
1937
1938 fill_displayentry(s, rid, 0, map->nt_name, NULL, map->comment, entry);
1939
1940 state->current_group += 1;
1941 return True;
1942 }
1943
1944 static void search_end_groups(struct pdb_search *search)
1945 {
1946 struct group_search *state =
1947 (struct group_search *)search->private_data;
1948 TALLOC_FREE(state->groups);
1949 }
1950
1951 static bool pdb_search_grouptype(struct pdb_methods *methods,
1952 struct pdb_search *search,
1953 const struct dom_sid *sid, enum lsa_SidType type)
1954 {
1955 struct group_search *state;
1956
1957 state = talloc_zero(search, struct group_search);
1958 if (state == NULL) {
1959 DEBUG(0, ("talloc failed\n"));
1960 return False;
1961 }
1962
1963 if (!NT_STATUS_IS_OK(methods->enum_group_mapping(methods, sid, type,
1964 &state->groups, &state->num_groups,
1965 True))) {
1966 DEBUG(0, ("Could not enum groups\n"));
1967 return False;
1968 }
1969
1970 state->current_group = 0;
1971 search->private_data = state;
1972 search->next_entry = next_entry_groups;
1973 search->search_end = search_end_groups;
1974 return True;
1975 }
1976
1977 static bool pdb_default_search_groups(struct pdb_methods *methods,
1978 struct pdb_search *search)
1979 {
1980 return pdb_search_grouptype(methods, search, get_global_sam_sid(), SID_NAME_DOM_GRP);
1981 }
1982
1983 static bool pdb_default_search_aliases(struct pdb_methods *methods,
1984 struct pdb_search *search,
1985 const struct dom_sid *sid)
1986 {
1987
1988 return pdb_search_grouptype(methods, search, sid, SID_NAME_ALIAS);
1989 }
1990
1991 static struct samr_displayentry *pdb_search_getentry(struct pdb_search *search,
1992 uint32_t idx)
1993 {
1994 if (idx < search->num_entries)
1995 return &search->cache[idx];
1996
1997 if (search->search_ended)
1998 return NULL;
1999
2000 while (idx >= search->num_entries) {
2001 struct samr_displayentry entry;
2002
2003 if (!search->next_entry(search, &entry)) {
2004 search->search_end(search);
2005 search->search_ended = True;
2006 break;
2007 }
2008
2009 ADD_TO_LARGE_ARRAY(search, struct samr_displayentry,
2010 entry, &search->cache, &search->num_entries,
2011 &search->cache_size);
2012 }
2013
2014 return (search->num_entries > idx) ? &search->cache[idx] : NULL;
2015 }
2016
2017 struct pdb_search *pdb_search_users(TALLOC_CTX *mem_ctx, uint32_t acct_flags)
2018 {
2019 struct pdb_methods *pdb = pdb_get_methods();
2020 struct pdb_search *result;
2021
2022 result = pdb_search_init(mem_ctx, PDB_USER_SEARCH);
2023 if (result == NULL) {
2024 return NULL;
2025 }
2026
2027 if (!pdb->search_users(pdb, result, acct_flags)) {
2028 TALLOC_FREE(result);
2029 return NULL;
2030 }
2031 return result;
2032 }
2033
2034 struct pdb_search *pdb_search_groups(TALLOC_CTX *mem_ctx)
2035 {
2036 struct pdb_methods *pdb = pdb_get_methods();
2037 struct pdb_search *result;
2038
2039 result = pdb_search_init(mem_ctx, PDB_GROUP_SEARCH);
2040 if (result == NULL) {
2041 return NULL;
2042 }
2043
2044 if (!pdb->search_groups(pdb, result)) {
2045 TALLOC_FREE(result);
2046 return NULL;
2047 }
2048 return result;
2049 }
2050
2051 struct pdb_search *pdb_search_aliases(TALLOC_CTX *mem_ctx, const struct dom_sid *sid)
2052 {
2053 struct pdb_methods *pdb = pdb_get_methods();
2054 struct pdb_search *result;
2055
2056 if (pdb == NULL) return NULL;
2057
2058 result = pdb_search_init(mem_ctx, PDB_ALIAS_SEARCH);
2059 if (result == NULL) {
2060 return NULL;
2061 }
2062
2063 if (!pdb->search_aliases(pdb, result, sid)) {
2064 TALLOC_FREE(result);
2065 return NULL;
2066 }
2067 return result;
2068 }
2069
2070 uint32_t pdb_search_entries(struct pdb_search *search,
2071 uint32_t start_idx, uint32_t max_entries,
2072 struct samr_displayentry **result)
2073 {
2074 struct samr_displayentry *end_entry;
2075 uint32_t end_idx = start_idx+max_entries-1;
2076
2077 /* The first entry needs to be searched after the last. Otherwise the
2078 * first entry might have moved due to a realloc during the search for
2079 * the last entry. */
2080
2081 end_entry = pdb_search_getentry(search, end_idx);
2082 *result = pdb_search_getentry(search, start_idx);
2083
2084 if (end_entry != NULL)
2085 return max_entries;
2086
2087 if (start_idx >= search->num_entries)
2088 return 0;
2089
2090 return search->num_entries - start_idx;
2091 }
2092
2093 /*******************************************************************
2094 trustdom methods
2095 *******************************************************************/
2096
2097 bool pdb_get_trusteddom_pw(const char *domain, char** pwd, struct dom_sid *sid,
2098 time_t *pass_last_set_time)
2099 {
2100 struct pdb_methods *pdb = pdb_get_methods();
2101 return pdb->get_trusteddom_pw(pdb, domain, pwd, sid,
2102 pass_last_set_time);
2103 }
2104
2105 bool pdb_set_trusteddom_pw(const char* domain, const char* pwd,
2106 const struct dom_sid *sid)
2107 {
2108 struct pdb_methods *pdb = pdb_get_methods();
2109 return pdb->set_trusteddom_pw(pdb, domain, pwd, sid);
2110 }
2111
2112 bool pdb_del_trusteddom_pw(const char *domain)
2113 {
2114 struct pdb_methods *pdb = pdb_get_methods();
2115 return pdb->del_trusteddom_pw(pdb, domain);
2116 }
2117
2118 NTSTATUS pdb_enum_trusteddoms(TALLOC_CTX *mem_ctx, uint32_t *num_domains,
2119 struct trustdom_info ***domains)
2120 {
2121 struct pdb_methods *pdb = pdb_get_methods();
2122 return pdb->enum_trusteddoms(pdb, mem_ctx, num_domains, domains);
2123 }
2124
2125 /*******************************************************************
2126 the defaults for trustdom methods:
2127 these simply call the original passdb/secrets.c actions,
2128 to be replaced by pdb_ldap.
2129 *******************************************************************/
2130
2131 static bool pdb_default_get_trusteddom_pw(struct pdb_methods *methods,
2132 const char *domain,
2133 char** pwd,
2134 struct dom_sid *sid,
2135 time_t *pass_last_set_time)
2136 {
2137 return secrets_fetch_trusted_domain_password(domain, pwd,
2138 sid, pass_last_set_time);
2139
2140 }
2141
2142 static bool pdb_default_set_trusteddom_pw(struct pdb_methods *methods,
2143 const char* domain,
2144 const char* pwd,
2145 const struct dom_sid *sid)
2146 {
2147 return secrets_store_trusted_domain_password(domain, pwd, sid);
2148 }
2149
2150 static bool pdb_default_del_trusteddom_pw(struct pdb_methods *methods,
2151 const char *domain)
2152 {
2153 return trusted_domain_password_delete(domain);
2154 }
2155
2156 static NTSTATUS pdb_default_enum_trusteddoms(struct pdb_methods *methods,
2157 TALLOC_CTX *mem_ctx,
2158 uint32_t *num_domains,
2159 struct trustdom_info ***domains)
2160 {
2161 return secrets_trusted_domains(mem_ctx, num_domains, domains);
2162 }
2163
2164 /*******************************************************************
2165 trusted_domain methods
2166 *******************************************************************/
2167
2168 NTSTATUS pdb_get_trusted_domain(TALLOC_CTX *mem_ctx, const char *domain,
2169 struct pdb_trusted_domain **td)
2170 {
2171 struct pdb_methods *pdb = pdb_get_methods();
2172 return pdb->get_trusted_domain(pdb, mem_ctx, domain, td);
2173 }
2174
2175 NTSTATUS pdb_get_trusted_domain_by_sid(TALLOC_CTX *mem_ctx, struct dom_sid *sid,
2176 struct pdb_trusted_domain **td)
2177 {
2178 struct pdb_methods *pdb = pdb_get_methods();
2179 return pdb->get_trusted_domain_by_sid(pdb, mem_ctx, sid, td);
2180 }
2181
2182 NTSTATUS pdb_set_trusted_domain(const char* domain,
2183 const struct pdb_trusted_domain *td)
2184 {
2185 struct pdb_methods *pdb = pdb_get_methods();
2186 return pdb->set_trusted_domain(pdb, domain, td);
2187 }
2188
2189 NTSTATUS pdb_del_trusted_domain(const char *domain)
2190 {
2191 struct pdb_methods *pdb = pdb_get_methods();
2192 return pdb->del_trusted_domain(pdb, domain);
2193 }
2194
2195 NTSTATUS pdb_enum_trusted_domains(TALLOC_CTX *mem_ctx, uint32_t *num_domains,
2196 struct pdb_trusted_domain ***domains)
2197 {
2198 struct pdb_methods *pdb = pdb_get_methods();
2199 return pdb->enum_trusted_domains(pdb, mem_ctx, num_domains, domains);
2200 }
2201
2202 static NTSTATUS pdb_default_get_trusted_domain(struct pdb_methods *methods,
2203 TALLOC_CTX *mem_ctx,
2204 const char *domain,
2205 struct pdb_trusted_domain **td)
2206 {
2207 struct trustAuthInOutBlob taiob;
2208 struct AuthenticationInformation aia;
2209 struct pdb_trusted_domain *tdom;
2210 enum ndr_err_code ndr_err;
2211 time_t last_set_time;
2212 char *pwd;
2213 bool ok;
2214
2215 tdom = talloc(mem_ctx, struct pdb_trusted_domain);
2216 if (!tdom) {
2217 return NT_STATUS_NO_MEMORY;
2218 }
2219
2220 tdom->domain_name = talloc_strdup(tdom, domain);
2221 tdom->netbios_name = talloc_strdup(tdom, domain);
2222 if (!tdom->domain_name || !tdom->netbios_name) {
2223 talloc_free(tdom);
2224 return NT_STATUS_NO_MEMORY;
2225 }
2226
2227 tdom->trust_auth_incoming = data_blob_null;
2228
2229 ok = pdb_get_trusteddom_pw(domain, &pwd, &tdom->security_identifier,
2230 &last_set_time);
2231 if (!ok) {
2232 talloc_free(tdom);
2233 return NT_STATUS_UNSUCCESSFUL;
2234 }
2235
2236 ZERO_STRUCT(taiob);
2237 ZERO_STRUCT(aia);
2238 taiob.count = 1;
2239 taiob.current.count = 1;
2240 taiob.current.array = &aia;
2241 unix_to_nt_time(&aia.LastUpdateTime, last_set_time);
2242 aia.AuthType = TRUST_AUTH_TYPE_CLEAR;
2243 aia.AuthInfo.clear.password = (uint8_t *) pwd;
2244 aia.AuthInfo.clear.size = strlen(pwd);
2245 taiob.previous.count = 0;
2246 taiob.previous.array = NULL;
2247
2248 ndr_err = ndr_push_struct_blob(&tdom->trust_auth_outgoing,
2249 tdom, &taiob,
2250 (ndr_push_flags_fn_t)ndr_push_trustAuthInOutBlob);
2251 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2252 talloc_free(tdom);
2253 return NT_STATUS_UNSUCCESSFUL;
2254 }
2255
2256 tdom->trust_direction = LSA_TRUST_DIRECTION_OUTBOUND;
2257 tdom->trust_type = LSA_TRUST_TYPE_DOWNLEVEL;
2258 tdom->trust_attributes = 0;
2259 tdom->trust_forest_trust_info = data_blob_null;
2260
2261 *td = tdom;
2262 return NT_STATUS_OK;
2263 }
2264
2265 static NTSTATUS pdb_default_get_trusted_domain_by_sid(struct pdb_methods *methods,
2266 TALLOC_CTX *mem_ctx,
2267 struct dom_sid *sid,
2268 struct pdb_trusted_domain **td)
2269 {
2270 return NT_STATUS_NOT_IMPLEMENTED;
2271 }
2272
2273 #define IS_NULL_DATA_BLOB(d) ((d).data == NULL && (d).length == 0)
2274
2275 static NTSTATUS pdb_default_set_trusted_domain(struct pdb_methods *methods,
2276 const char* domain,
2277 const struct pdb_trusted_domain *td)
2278 {
2279 struct trustAuthInOutBlob taiob;
2280 struct AuthenticationInformation *aia;
2281 enum ndr_err_code ndr_err;
2282 char *pwd;
2283 bool ok;
2284
2285 if (td->trust_attributes != 0 ||
2286 td->trust_type != LSA_TRUST_TYPE_DOWNLEVEL ||
2287 td->trust_direction != LSA_TRUST_DIRECTION_OUTBOUND ||
2288 !IS_NULL_DATA_BLOB(td->trust_auth_incoming) ||
2289 !IS_NULL_DATA_BLOB(td->trust_forest_trust_info)) {
2290 return NT_STATUS_NOT_IMPLEMENTED;
2291 }
2292
2293 ZERO_STRUCT(taiob);
2294 ndr_err = ndr_pull_struct_blob(&td->trust_auth_outgoing, talloc_tos(),
2295 &taiob,
2296 (ndr_pull_flags_fn_t)ndr_pull_trustAuthInOutBlob);
2297 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2298 return NT_STATUS_UNSUCCESSFUL;
2299 }
2300
2301 aia = (struct AuthenticationInformation *) taiob.current.array;
2302
2303 if (taiob.count != 1 || taiob.current.count != 1 ||
2304 taiob.previous.count != 0 ||
2305 aia->AuthType != TRUST_AUTH_TYPE_CLEAR) {
2306 return NT_STATUS_NOT_IMPLEMENTED;
2307 }
2308
2309 pwd = talloc_strndup(talloc_tos(), (char *) aia->AuthInfo.clear.password,
2310 aia->AuthInfo.clear.size);
2311 if (!pwd) {
2312 return NT_STATUS_NO_MEMORY;
2313 }
2314
2315 ok = pdb_set_trusteddom_pw(domain, pwd, &td->security_identifier);
2316 if (!ok) {
2317 return NT_STATUS_UNSUCCESSFUL;
2318 }
2319
2320 return NT_STATUS_OK;
2321 }
2322
2323 static NTSTATUS pdb_default_del_trusted_domain(struct pdb_methods *methods,
2324 const char *domain)
2325 {
2326 return NT_STATUS_NOT_IMPLEMENTED;
2327 }
2328
2329 static NTSTATUS pdb_default_enum_trusted_domains(struct pdb_methods *methods,
2330 TALLOC_CTX *mem_ctx,
2331 uint32_t *num_domains,
2332 struct pdb_trusted_domain ***domains)
2333 {
2334 return NT_STATUS_NOT_IMPLEMENTED;
2335 }
2336
2337 static struct pdb_domain_info *pdb_default_get_domain_info(
2338 struct pdb_methods *m, TALLOC_CTX *mem_ctx)
2339 {
2340 return NULL;
2341 }
2342
2343 /*****************************************************************
2344 UPN suffixes
2345 *****************************************************************/
2346 static NTSTATUS pdb_default_enum_upn_suffixes(struct pdb_methods *pdb,
2347 TALLOC_CTX *mem_ctx,
2348 uint32_t *num_suffixes,
2349 char ***suffixes)
2350 {
2351 return NT_STATUS_NOT_IMPLEMENTED;
2352 }
2353
2354 static NTSTATUS pdb_default_set_upn_suffixes(struct pdb_methods *pdb,
2355 uint32_t num_suffixes,
2356 const char **suffixes)
2357 {
2358 return NT_STATUS_NOT_IMPLEMENTED;
2359 }
2360
2361 NTSTATUS pdb_enum_upn_suffixes(TALLOC_CTX *mem_ctx,
2362 uint32_t *num_suffixes,
2363 char ***suffixes)
2364 {
2365 struct pdb_methods *pdb = pdb_get_methods();
2366 return pdb->enum_upn_suffixes(pdb, mem_ctx, num_suffixes, suffixes);
2367 }
2368
2369 NTSTATUS pdb_set_upn_suffixes(uint32_t num_suffixes,
2370 const char **suffixes)
2371 {
2372 struct pdb_methods *pdb = pdb_get_methods();
2373 return pdb->set_upn_suffixes(pdb, num_suffixes, suffixes);
2374 }
2375
2376 /*******************************************************************
2377 secret methods
2378 *******************************************************************/
2379
2380 NTSTATUS pdb_get_secret(TALLOC_CTX *mem_ctx,
2381 const char *secret_name,
2382 DATA_BLOB *secret_current,
2383 NTTIME *secret_current_lastchange,
2384 DATA_BLOB *secret_old,
2385 NTTIME *secret_old_lastchange,
2386 struct security_descriptor **sd)
2387 {
2388 struct pdb_methods *pdb = pdb_get_methods();
2389 return pdb->get_secret(pdb, mem_ctx, secret_name,
2390 secret_current, secret_current_lastchange,
2391 secret_old, secret_old_lastchange,
2392 sd);
2393 }
2394
2395 NTSTATUS pdb_set_secret(const char *secret_name,
2396 DATA_BLOB *secret_current,
2397 DATA_BLOB *secret_old,
2398 struct security_descriptor *sd)
2399 {
2400 struct pdb_methods *pdb = pdb_get_methods();
2401 return pdb->set_secret(pdb, secret_name,
2402 secret_current,
2403 secret_old,
2404 sd);
2405 }
2406
2407 NTSTATUS pdb_delete_secret(const char *secret_name)
2408 {
2409 struct pdb_methods *pdb = pdb_get_methods();
2410 return pdb->delete_secret(pdb, secret_name);
2411 }
2412
2413 static NTSTATUS pdb_default_get_secret(struct pdb_methods *methods,
2414 TALLOC_CTX *mem_ctx,
2415 const char *secret_name,
2416 DATA_BLOB *secret_current,
2417 NTTIME *secret_current_lastchange,
2418 DATA_BLOB *secret_old,
2419 NTTIME *secret_old_lastchange,
2420 struct security_descriptor **sd)
2421 {
2422 return lsa_secret_get(mem_ctx, secret_name,
2423 secret_current,
2424 secret_current_lastchange,
2425 secret_old,
2426 secret_old_lastchange,
2427 sd);
2428 }
2429
2430 static NTSTATUS pdb_default_set_secret(struct pdb_methods *methods,
2431 const char *secret_name,
2432 DATA_BLOB *secret_current,
2433 DATA_BLOB *secret_old,
2434 struct security_descriptor *sd)
2435 {
2436 return lsa_secret_set(secret_name,
2437 secret_current,
2438 secret_old,
2439 sd);
2440 }
2441
2442 static NTSTATUS pdb_default_delete_secret(struct pdb_methods *methods,
2443 const char *secret_name)
2444 {
2445 return lsa_secret_delete(secret_name);
2446 }
2447
2448 /*******************************************************************
2449 Create a pdb_methods structure and initialize it with the default
2450 operations. In this way a passdb module can simply implement
2451 the functionality it cares about. However, normally this is done
2452 in groups of related functions.
2453 *******************************************************************/
2454
2455 NTSTATUS make_pdb_method( struct pdb_methods **methods )
2456 {
2457 /* allocate memory for the structure as its own talloc CTX */
2458
2459 *methods = talloc_zero(NULL, struct pdb_methods);
2460 if (*methods == NULL) {
2461 return NT_STATUS_NO_MEMORY;
2462 }
2463
2464 (*methods)->get_domain_info = pdb_default_get_domain_info;
2465 (*methods)->getsampwnam = pdb_default_getsampwnam;
2466 (*methods)->getsampwsid = pdb_default_getsampwsid;
2467 (*methods)->create_user = pdb_default_create_user;
2468 (*methods)->delete_user = pdb_default_delete_user;
2469 (*methods)->add_sam_account = pdb_default_add_sam_account;
2470 (*methods)->update_sam_account = pdb_default_update_sam_account;
2471 (*methods)->delete_sam_account = pdb_default_delete_sam_account;
2472 (*methods)->rename_sam_account = pdb_default_rename_sam_account;
2473 (*methods)->update_login_attempts = pdb_default_update_login_attempts;
2474
2475 (*methods)->getgrsid = pdb_default_getgrsid;
2476 (*methods)->getgrgid = pdb_default_getgrgid;
2477 (*methods)->getgrnam = pdb_default_getgrnam;
2478 (*methods)->create_dom_group = pdb_default_create_dom_group;
2479 (*methods)->delete_dom_group = pdb_default_delete_dom_group;
2480 (*methods)->add_group_mapping_entry = pdb_default_add_group_mapping_entry;
2481 (*methods)->update_group_mapping_entry = pdb_default_update_group_mapping_entry;
2482 (*methods)->delete_group_mapping_entry = pdb_default_delete_group_mapping_entry;
2483 (*methods)->enum_group_mapping = pdb_default_enum_group_mapping;
2484 (*methods)->enum_group_members = pdb_default_enum_group_members;
2485 (*methods)->enum_group_memberships = pdb_default_enum_group_memberships;
2486 (*methods)->set_unix_primary_group = pdb_default_set_unix_primary_group;
2487 (*methods)->add_groupmem = pdb_default_add_groupmem;
2488 (*methods)->del_groupmem = pdb_default_del_groupmem;
2489 (*methods)->create_alias = pdb_default_create_alias;
2490 (*methods)->delete_alias = pdb_default_delete_alias;
2491 (*methods)->get_aliasinfo = pdb_default_get_aliasinfo;
2492 (*methods)->set_aliasinfo = pdb_default_set_aliasinfo;
2493 (*methods)->add_aliasmem = pdb_default_add_aliasmem;
2494 (*methods)->del_aliasmem = pdb_default_del_aliasmem;
2495 (*methods)->enum_aliasmem = pdb_default_enum_aliasmem;
2496 (*methods)->enum_alias_memberships = pdb_default_alias_memberships;
2497 (*methods)->lookup_rids = pdb_default_lookup_rids;
2498 (*methods)->get_account_policy = pdb_default_get_account_policy;
2499 (*methods)->set_account_policy = pdb_default_set_account_policy;
2500 (*methods)->get_seq_num = pdb_default_get_seq_num;
2501 (*methods)->uid_to_sid = pdb_default_uid_to_sid;
2502 (*methods)->gid_to_sid = pdb_default_gid_to_sid;
2503 (*methods)->sid_to_id = pdb_default_sid_to_id;
2504
2505 (*methods)->search_groups = pdb_default_search_groups;
2506 (*methods)->search_aliases = pdb_default_search_aliases;
2507
2508 (*methods)->get_trusteddom_pw = pdb_default_get_trusteddom_pw;
2509 (*methods)->set_trusteddom_pw = pdb_default_set_trusteddom_pw;
2510 (*methods)->del_trusteddom_pw = pdb_default_del_trusteddom_pw;
2511 (*methods)->enum_trusteddoms = pdb_default_enum_trusteddoms;
2512
2513 (*methods)->get_trusted_domain = pdb_default_get_trusted_domain;
2514 (*methods)->get_trusted_domain_by_sid = pdb_default_get_trusted_domain_by_sid;
2515 (*methods)->set_trusted_domain = pdb_default_set_trusted_domain;
2516 (*methods)->del_trusted_domain = pdb_default_del_trusted_domain;
2517 (*methods)->enum_trusted_domains = pdb_default_enum_trusted_domains;
2518
2519 (*methods)->get_secret = pdb_default_get_secret;
2520 (*methods)->set_secret = pdb_default_set_secret;
2521 (*methods)->delete_secret = pdb_default_delete_secret;
2522
2523 (*methods)->enum_upn_suffixes = pdb_default_enum_upn_suffixes;
2524 (*methods)->set_upn_suffixes = pdb_default_set_upn_suffixes;
2525
2526 return NT_STATUS_OK;
2527 }
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