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r14403: * modifies create_local_nt_token() to create a BUILTIN\Administrators
[Samba.git] / source / groupdb / mapping.c
blob04471f9d43323e2e478a4b625fdba176fec4b714
1 /*
2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Andrew Tridgell 1992-2000,
5 * Copyright (C) Jean François Micouleau 1998-2001.
6 * Copyright (C) Volker Lendecke 2006.
7 * Copyright (C) Gerald Carter 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 static TDB_CONTEXT *tdb; /* used for driver files */
27
28 #define DATABASE_VERSION_V1 1 /* native byte format. */
29 #define DATABASE_VERSION_V2 2 /* le format. */
30
31 #define GROUP_PREFIX "UNIXGROUP/"
32
33 /* Alias memberships are stored reverse, as memberships. The performance
34 * critical operation is to determine the aliases a SID is member of, not
35 * listing alias members. So we store a list of alias SIDs a SID is member of
36 * hanging of the member as key.
37 */
38 #define MEMBEROF_PREFIX "MEMBEROF/"
39
40
41 static BOOL enum_group_mapping(const DOM_SID *sid, enum SID_NAME_USE sid_name_use, GROUP_MAP **pp_rmap,
42 size_t *p_num_entries, BOOL unix_only);
43 static BOOL group_map_remove(const DOM_SID *sid);
44
45 /****************************************************************************
46 Open the group mapping tdb.
47 ****************************************************************************/
48
49 static BOOL init_group_mapping(void)
50 {
51 const char *vstring = "INFO/version";
52 int32 vers_id;
53 GROUP_MAP *map_table = NULL;
54 size_t num_entries = 0;
55
56 if (tdb)
57 return True;
58
59 tdb = tdb_open_log(lock_path("group_mapping.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
60 if (!tdb) {
61 DEBUG(0,("Failed to open group mapping database\n"));
62 return False;
63 }
64
65 /* handle a Samba upgrade */
66 tdb_lock_bystring(tdb, vstring, 0);
67
68 /* Cope with byte-reversed older versions of the db. */
69 vers_id = tdb_fetch_int32(tdb, vstring);
70 if ((vers_id == DATABASE_VERSION_V1) || (IREV(vers_id) == DATABASE_VERSION_V1)) {
71 /* Written on a bigendian machine with old fetch_int code. Save as le. */
72 tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2);
73 vers_id = DATABASE_VERSION_V2;
74 }
75
76 /* if its an unknown version we remove everthing in the db */
77
78 if (vers_id != DATABASE_VERSION_V2) {
79 tdb_traverse(tdb, tdb_traverse_delete_fn, NULL);
80 tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2);
81 }
82
83 tdb_unlock_bystring(tdb, vstring);
84
85 /* cleanup any map entries with a gid == -1 */
86
87 if ( enum_group_mapping( NULL, SID_NAME_UNKNOWN, &map_table, &num_entries, False ) ) {
88 int i;
89
90 for ( i=0; i<num_entries; i++ ) {
91 if ( map_table[i].gid == -1 ) {
92 group_map_remove( &map_table[i].sid );
93 }
94 }
95
96 SAFE_FREE( map_table );
97 }
98
99
100 return True;
101 }
102
103 /****************************************************************************
104 ****************************************************************************/
105 static BOOL add_mapping_entry(GROUP_MAP *map, int flag)
106 {
107 TDB_DATA kbuf, dbuf;
108 pstring key, buf;
109 fstring string_sid="";
110 int len;
111
112 if(!init_group_mapping()) {
113 DEBUG(0,("failed to initialize group mapping\n"));
114 return(False);
115 }
116
117 sid_to_string(string_sid, &map->sid);
118
119 len = tdb_pack(buf, sizeof(buf), "ddff",
120 map->gid, map->sid_name_use, map->nt_name, map->comment);
121
122 if (len > sizeof(buf))
123 return False;
124
125 slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
126
127 kbuf.dsize = strlen(key)+1;
128 kbuf.dptr = key;
129 dbuf.dsize = len;
130 dbuf.dptr = buf;
131 if (tdb_store(tdb, kbuf, dbuf, flag) != 0) return False;
132
133 return True;
134 }
135
136 /****************************************************************************
137 initialise first time the mapping list
138 ****************************************************************************/
139 NTSTATUS add_initial_entry(gid_t gid, const char *sid, enum SID_NAME_USE sid_name_use, const char *nt_name, const char *comment)
140 {
141 GROUP_MAP map;
142
143 if(!init_group_mapping()) {
144 DEBUG(0,("failed to initialize group mapping\n"));
145 return NT_STATUS_UNSUCCESSFUL;
146 }
147
148 map.gid=gid;
149 if (!string_to_sid(&map.sid, sid)) {
150 DEBUG(0, ("string_to_sid failed: %s", sid));
151 return NT_STATUS_UNSUCCESSFUL;
152 }
153
154 map.sid_name_use=sid_name_use;
155 fstrcpy(map.nt_name, nt_name);
156 fstrcpy(map.comment, comment);
157
158 return pdb_add_group_mapping_entry(&map);
159 }
160
161 /****************************************************************************
162 Map a unix group to a newly created mapping
163 ****************************************************************************/
164 NTSTATUS map_unix_group(const struct group *grp, GROUP_MAP *pmap)
165 {
166 NTSTATUS status;
167 GROUP_MAP map;
168 const char *grpname, *dom, *name;
169 uint32 rid;
170
171 if (pdb_getgrgid(&map, grp->gr_gid)) {
172 return NT_STATUS_GROUP_EXISTS;
173 }
174
175 map.gid = grp->gr_gid;
176 grpname = grp->gr_name;
177
178 if (lookup_name(tmp_talloc_ctx(), grpname, LOOKUP_NAME_ISOLATED,
179 &dom, &name, NULL, NULL)) {
180
181 const char *tmp = talloc_asprintf(
182 tmp_talloc_ctx(), "Unix Group %s", grp->gr_name);
183
184 DEBUG(5, ("%s exists as %s\\%s, retrying as \"%s\"\n",
185 grpname, dom, name, tmp));
186 grpname = tmp;
187 }
188
189 if (lookup_name(tmp_talloc_ctx(), grpname, LOOKUP_NAME_ISOLATED,
190 NULL, NULL, NULL, NULL)) {
191 DEBUG(3, ("\"%s\" exists, can't map it\n", grp->gr_name));
192 return NT_STATUS_GROUP_EXISTS;
193 }
194
195 fstrcpy(map.nt_name, grpname);
196
197 if (pdb_rid_algorithm()) {
198 rid = pdb_gid_to_group_rid( grp->gr_gid );
199 } else {
200 if (!pdb_new_rid(&rid)) {
201 DEBUG(3, ("Could not get a new RID for %s\n",
202 grp->gr_name));
203 return NT_STATUS_ACCESS_DENIED;
204 }
205 }
206
207 sid_compose(&map.sid, get_global_sam_sid(), rid);
208 map.sid_name_use = SID_NAME_DOM_GRP;
209 fstrcpy(map.comment, talloc_asprintf(tmp_talloc_ctx(), "Unix Group %s",
210 grp->gr_name));
211
212 status = pdb_add_group_mapping_entry(&map);
213 if (NT_STATUS_IS_OK(status)) {
214 *pmap = map;
215 }
216 return status;
217 }
218
219 /****************************************************************************
220 Return the sid and the type of the unix group.
221 ****************************************************************************/
222
223 static BOOL get_group_map_from_sid(DOM_SID sid, GROUP_MAP *map)
224 {
225 TDB_DATA kbuf, dbuf;
226 pstring key;
227 fstring string_sid;
228 int ret = 0;
229
230 if(!init_group_mapping()) {
231 DEBUG(0,("failed to initialize group mapping\n"));
232 return(False);
233 }
234
235 /* the key is the SID, retrieving is direct */
236
237 sid_to_string(string_sid, &sid);
238 slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
239
240 kbuf.dptr = key;
241 kbuf.dsize = strlen(key)+1;
242
243 dbuf = tdb_fetch(tdb, kbuf);
244 if (!dbuf.dptr)
245 return False;
246
247 ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
248 &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
249
250 SAFE_FREE(dbuf.dptr);
251
252 if ( ret == -1 ) {
253 DEBUG(3,("get_group_map_from_sid: tdb_unpack failure\n"));
254 return False;
255 }
256
257 sid_copy(&map->sid, &sid);
258
259 return True;
260 }
261
262 /****************************************************************************
263 Return the sid and the type of the unix group.
264 ****************************************************************************/
265
266 static BOOL get_group_map_from_gid(gid_t gid, GROUP_MAP *map)
267 {
268 TDB_DATA kbuf, dbuf, newkey;
269 fstring string_sid;
270 int ret;
271
272 if(!init_group_mapping()) {
273 DEBUG(0,("failed to initialize group mapping\n"));
274 return(False);
275 }
276
277 /* we need to enumerate the TDB to find the GID */
278
279 for (kbuf = tdb_firstkey(tdb);
280 kbuf.dptr;
281 newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
282
283 if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
284
285 dbuf = tdb_fetch(tdb, kbuf);
286 if (!dbuf.dptr)
287 continue;
288
289 fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
290
291 string_to_sid(&map->sid, string_sid);
292
293 ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
294 &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
295
296 SAFE_FREE(dbuf.dptr);
297
298 if ( ret == -1 ) {
299 DEBUG(3,("get_group_map_from_gid: tdb_unpack failure\n"));
300 return False;
301 }
302
303 if (gid==map->gid) {
304 SAFE_FREE(kbuf.dptr);
305 return True;
306 }
307 }
308
309 return False;
310 }
311
312 /****************************************************************************
313 Return the sid and the type of the unix group.
314 ****************************************************************************/
315
316 static BOOL get_group_map_from_ntname(const char *name, GROUP_MAP *map)
317 {
318 TDB_DATA kbuf, dbuf, newkey;
319 fstring string_sid;
320 int ret;
321
322 if(!init_group_mapping()) {
323 DEBUG(0,("get_group_map_from_ntname:failed to initialize group mapping\n"));
324 return(False);
325 }
326
327 /* we need to enumerate the TDB to find the name */
328
329 for (kbuf = tdb_firstkey(tdb);
330 kbuf.dptr;
331 newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
332
333 if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
334
335 dbuf = tdb_fetch(tdb, kbuf);
336 if (!dbuf.dptr)
337 continue;
338
339 fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
340
341 string_to_sid(&map->sid, string_sid);
342
343 ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
344 &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
345
346 SAFE_FREE(dbuf.dptr);
347
348 if ( ret == -1 ) {
349 DEBUG(3,("get_group_map_from_ntname: tdb_unpack failure\n"));
350 return False;
351 }
352
353 if ( strequal(name, map->nt_name) ) {
354 SAFE_FREE(kbuf.dptr);
355 return True;
356 }
357 }
358
359 return False;
360 }
361
362 /****************************************************************************
363 Remove a group mapping entry.
364 ****************************************************************************/
365
366 static BOOL group_map_remove(const DOM_SID *sid)
367 {
368 TDB_DATA kbuf, dbuf;
369 pstring key;
370 fstring string_sid;
371
372 if(!init_group_mapping()) {
373 DEBUG(0,("failed to initialize group mapping\n"));
374 return(False);
375 }
376
377 /* the key is the SID, retrieving is direct */
378
379 sid_to_string(string_sid, sid);
380 slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
381
382 kbuf.dptr = key;
383 kbuf.dsize = strlen(key)+1;
384
385 dbuf = tdb_fetch(tdb, kbuf);
386 if (!dbuf.dptr)
387 return False;
388
389 SAFE_FREE(dbuf.dptr);
390
391 if(tdb_delete(tdb, kbuf) != TDB_SUCCESS)
392 return False;
393
394 return True;
395 }
396
397 /****************************************************************************
398 Enumerate the group mapping.
399 ****************************************************************************/
400
401 static BOOL enum_group_mapping(const DOM_SID *domsid, enum SID_NAME_USE sid_name_use, GROUP_MAP **pp_rmap,
402 size_t *p_num_entries, BOOL unix_only)
403 {
404 TDB_DATA kbuf, dbuf, newkey;
405 fstring string_sid;
406 GROUP_MAP map;
407 GROUP_MAP *mapt;
408 int ret;
409 size_t entries=0;
410 DOM_SID grpsid;
411 uint32 rid;
412
413 if(!init_group_mapping()) {
414 DEBUG(0,("failed to initialize group mapping\n"));
415 return(False);
416 }
417
418 *p_num_entries=0;
419 *pp_rmap=NULL;
420
421 for (kbuf = tdb_firstkey(tdb);
422 kbuf.dptr;
423 newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
424
425 if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0)
426 continue;
427
428 dbuf = tdb_fetch(tdb, kbuf);
429 if (!dbuf.dptr)
430 continue;
431
432 fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
433
434 ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
435 &map.gid, &map.sid_name_use, &map.nt_name, &map.comment);
436
437 SAFE_FREE(dbuf.dptr);
438
439 if ( ret == -1 ) {
440 DEBUG(3,("enum_group_mapping: tdb_unpack failure\n"));
441 continue;
442 }
443
444 /* list only the type or everything if UNKNOWN */
445 if (sid_name_use!=SID_NAME_UNKNOWN && sid_name_use!=map.sid_name_use) {
446 DEBUG(11,("enum_group_mapping: group %s is not of the requested type\n", map.nt_name));
447 continue;
448 }
449
450 if (unix_only==ENUM_ONLY_MAPPED && map.gid==-1) {
451 DEBUG(11,("enum_group_mapping: group %s is non mapped\n", map.nt_name));
452 continue;
453 }
454
455 string_to_sid(&grpsid, string_sid);
456 sid_copy( &map.sid, &grpsid );
457
458 sid_split_rid( &grpsid, &rid );
459
460 /* Only check the domain if we were given one */
461
462 if ( domsid && !sid_equal( domsid, &grpsid ) ) {
463 DEBUG(11,("enum_group_mapping: group %s is not in domain %s\n",
464 string_sid, sid_string_static(domsid)));
465 continue;
466 }
467
468 DEBUG(11,("enum_group_mapping: returning group %s of "
469 "type %s\n", map.nt_name,
470 sid_type_lookup(map.sid_name_use)));
471
472 (*pp_rmap) = SMB_REALLOC_ARRAY((*pp_rmap), GROUP_MAP, entries+1);
473 if (!(*pp_rmap)) {
474 DEBUG(0,("enum_group_mapping: Unable to enlarge group map!\n"));
475 return False;
476 }
477
478 mapt = (*pp_rmap);
479
480 mapt[entries].gid = map.gid;
481 sid_copy( &mapt[entries].sid, &map.sid);
482 mapt[entries].sid_name_use = map.sid_name_use;
483 fstrcpy(mapt[entries].nt_name, map.nt_name);
484 fstrcpy(mapt[entries].comment, map.comment);
485
486 entries++;
487
488 }
489
490 *p_num_entries=entries;
491
492 return True;
493 }
494
495 /* This operation happens on session setup, so it should better be fast. We
496 * store a list of aliases a SID is member of hanging off MEMBEROF/SID. */
497
498 static NTSTATUS one_alias_membership(const DOM_SID *member,
499 DOM_SID **sids, size_t *num)
500 {
501 fstring key, string_sid;
502 TDB_DATA kbuf, dbuf;
503 const char *p;
504
505 if (!init_group_mapping()) {
506 DEBUG(0,("failed to initialize group mapping\n"));
507 return NT_STATUS_ACCESS_DENIED;
508 }
509
510 sid_to_string(string_sid, member);
511 slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, string_sid);
512
513 kbuf.dsize = strlen(key)+1;
514 kbuf.dptr = key;
515
516 dbuf = tdb_fetch(tdb, kbuf);
517
518 if (dbuf.dptr == NULL) {
519 return NT_STATUS_OK;
520 }
521
522 p = dbuf.dptr;
523
524 while (next_token(&p, string_sid, " ", sizeof(string_sid))) {
525
526 DOM_SID alias;
527
528 if (!string_to_sid(&alias, string_sid))
529 continue;
530
531 add_sid_to_array_unique(NULL, &alias, sids, num);
532
533 if (sids == NULL)
534 return NT_STATUS_NO_MEMORY;
535 }
536
537 SAFE_FREE(dbuf.dptr);
538 return NT_STATUS_OK;
539 }
540
541 static NTSTATUS alias_memberships(const DOM_SID *members, size_t num_members,
542 DOM_SID **sids, size_t *num)
543 {
544 size_t i;
545
546 *num = 0;
547 *sids = NULL;
548
549 for (i=0; i<num_members; i++) {
550 NTSTATUS status = one_alias_membership(&members[i], sids, num);
551 if (!NT_STATUS_IS_OK(status))
552 return status;
553 }
554 return NT_STATUS_OK;
555 }
556
557 static BOOL is_aliasmem(const DOM_SID *alias, const DOM_SID *member)
558 {
559 DOM_SID *sids;
560 size_t i, num;
561
562 /* This feels the wrong way round, but the on-disk data structure
563 * dictates it this way. */
564 if (!NT_STATUS_IS_OK(alias_memberships(member, 1, &sids, &num)))
565 return False;
566
567 for (i=0; i<num; i++) {
568 if (sid_compare(alias, &sids[i]) == 0) {
569 SAFE_FREE(sids);
570 return True;
571 }
572 }
573 SAFE_FREE(sids);
574 return False;
575 }
576
577 static NTSTATUS add_aliasmem(const DOM_SID *alias, const DOM_SID *member)
578 {
579 GROUP_MAP map;
580 TDB_DATA kbuf, dbuf;
581 pstring key;
582 fstring string_sid;
583 char *new_memberstring;
584 int result;
585
586 if(!init_group_mapping()) {
587 DEBUG(0,("failed to initialize group mapping\n"));
588 return NT_STATUS_ACCESS_DENIED;
589 }
590
591 if (!get_group_map_from_sid(*alias, &map))
592 return NT_STATUS_NO_SUCH_ALIAS;
593
594 if ( (map.sid_name_use != SID_NAME_ALIAS) &&
595 (map.sid_name_use != SID_NAME_WKN_GRP) )
596 return NT_STATUS_NO_SUCH_ALIAS;
597
598 if (is_aliasmem(alias, member))
599 return NT_STATUS_MEMBER_IN_ALIAS;
600
601 sid_to_string(string_sid, member);
602 slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, string_sid);
603
604 kbuf.dsize = strlen(key)+1;
605 kbuf.dptr = key;
606
607 dbuf = tdb_fetch(tdb, kbuf);
608
609 sid_to_string(string_sid, alias);
610
611 if (dbuf.dptr != NULL) {
612 asprintf(&new_memberstring, "%s %s", (char *)(dbuf.dptr),
613 string_sid);
614 } else {
615 new_memberstring = SMB_STRDUP(string_sid);
616 }
617
618 if (new_memberstring == NULL)
619 return NT_STATUS_NO_MEMORY;
620
621 SAFE_FREE(dbuf.dptr);
622 dbuf.dsize = strlen(new_memberstring)+1;
623 dbuf.dptr = new_memberstring;
624
625 result = tdb_store(tdb, kbuf, dbuf, 0);
626
627 SAFE_FREE(new_memberstring);
628
629 return (result == 0 ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED);
630 }
631
632 struct aliasmem_closure {
633 const DOM_SID *alias;
634 DOM_SID **sids;
635 size_t *num;
636 };
637
638 static int collect_aliasmem(TDB_CONTEXT *tdb_ctx, TDB_DATA key, TDB_DATA data,
639 void *state)
640 {
641 struct aliasmem_closure *closure = (struct aliasmem_closure *)state;
642 const char *p;
643 fstring alias_string;
644
645 if (strncmp(key.dptr, MEMBEROF_PREFIX,
646 strlen(MEMBEROF_PREFIX)) != 0)
647 return 0;
648
649 p = data.dptr;
650
651 while (next_token(&p, alias_string, " ", sizeof(alias_string))) {
652
653 DOM_SID alias, member;
654 const char *member_string;
655
656
657 if (!string_to_sid(&alias, alias_string))
658 continue;
659
660 if (sid_compare(closure->alias, &alias) != 0)
661 continue;
662
663 /* Ok, we found the alias we're looking for in the membership
664 * list currently scanned. The key represents the alias
665 * member. Add that. */
666
667 member_string = strchr(key.dptr, '/');
668
669 /* Above we tested for MEMBEROF_PREFIX which includes the
670 * slash. */
671
672 SMB_ASSERT(member_string != NULL);
673 member_string += 1;
674
675 if (!string_to_sid(&member, member_string))
676 continue;
677
678 add_sid_to_array(NULL, &member, closure->sids, closure->num);
679 }
680
681 return 0;
682 }
683
684 static NTSTATUS enum_aliasmem(const DOM_SID *alias, DOM_SID **sids, size_t *num)
685 {
686 GROUP_MAP map;
687 struct aliasmem_closure closure;
688
689 if(!init_group_mapping()) {
690 DEBUG(0,("failed to initialize group mapping\n"));
691 return NT_STATUS_ACCESS_DENIED;
692 }
693
694 if (!get_group_map_from_sid(*alias, &map))
695 return NT_STATUS_NO_SUCH_ALIAS;
696
697 if ( (map.sid_name_use != SID_NAME_ALIAS) &&
698 (map.sid_name_use != SID_NAME_WKN_GRP) )
699 return NT_STATUS_NO_SUCH_ALIAS;
700
701 *sids = NULL;
702 *num = 0;
703
704 closure.alias = alias;
705 closure.sids = sids;
706 closure.num = num;
707
708 tdb_traverse(tdb, collect_aliasmem, &closure);
709 return NT_STATUS_OK;
710 }
711
712 static NTSTATUS del_aliasmem(const DOM_SID *alias, const DOM_SID *member)
713 {
714 NTSTATUS result;
715 DOM_SID *sids;
716 size_t i, num;
717 BOOL found = False;
718 char *member_string;
719 TDB_DATA kbuf, dbuf;
720 pstring key;
721 fstring sid_string;
722
723 result = alias_memberships(member, 1, &sids, &num);
724
725 if (!NT_STATUS_IS_OK(result))
726 return result;
727
728 for (i=0; i<num; i++) {
729 if (sid_compare(&sids[i], alias) == 0) {
730 found = True;
731 break;
732 }
733 }
734
735 if (!found) {
736 SAFE_FREE(sids);
737 return NT_STATUS_MEMBER_NOT_IN_ALIAS;
738 }
739
740 if (i < num)
741 sids[i] = sids[num-1];
742
743 num -= 1;
744
745 sid_to_string(sid_string, member);
746 slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, sid_string);
747
748 kbuf.dsize = strlen(key)+1;
749 kbuf.dptr = key;
750
751 if (num == 0)
752 return tdb_delete(tdb, kbuf) == 0 ?
753 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
754
755 member_string = SMB_STRDUP("");
756
757 if (member_string == NULL) {
758 SAFE_FREE(sids);
759 return NT_STATUS_NO_MEMORY;
760 }
761
762 for (i=0; i<num; i++) {
763 char *s = member_string;
764
765 sid_to_string(sid_string, &sids[i]);
766 asprintf(&member_string, "%s %s", s, sid_string);
767
768 SAFE_FREE(s);
769 if (member_string == NULL) {
770 SAFE_FREE(sids);
771 return NT_STATUS_NO_MEMORY;
772 }
773 }
774
775 dbuf.dsize = strlen(member_string)+1;
776 dbuf.dptr = member_string;
777
778 result = tdb_store(tdb, kbuf, dbuf, 0) == 0 ?
779 NT_STATUS_OK : NT_STATUS_ACCESS_DENIED;
780
781 SAFE_FREE(sids);
782 SAFE_FREE(member_string);
783
784 return result;
785 }
786
787 /*
788 *
789 * High level functions
790 * better to use them than the lower ones.
791 *
792 * we are checking if the group is in the mapping file
793 * and if the group is an existing unix group
794 *
795 */
796
797 /* get a domain group from it's SID */
798
799 BOOL get_domain_group_from_sid(DOM_SID sid, GROUP_MAP *map)
800 {
801 struct group *grp;
802 BOOL ret;
803
804 if(!init_group_mapping()) {
805 DEBUG(0,("failed to initialize group mapping\n"));
806 return(False);
807 }
808
809 DEBUG(10, ("get_domain_group_from_sid\n"));
810
811 /* if the group is NOT in the database, it CAN NOT be a domain group */
812
813 become_root();
814 ret = pdb_getgrsid(map, sid);
815 unbecome_root();
816
817 if ( !ret )
818 return False;
819
820 DEBUG(10, ("get_domain_group_from_sid: SID found in the TDB\n"));
821
822 /* if it's not a domain group, continue */
823 if (map->sid_name_use!=SID_NAME_DOM_GRP) {
824 return False;
825 }
826
827 DEBUG(10, ("get_domain_group_from_sid: SID is a domain group\n"));
828
829 if (map->gid==-1) {
830 return False;
831 }
832
833 DEBUG(10, ("get_domain_group_from_sid: SID is mapped to gid:%lu\n",(unsigned long)map->gid));
834
835 grp = getgrgid(map->gid);
836 if ( !grp ) {
837 DEBUG(10, ("get_domain_group_from_sid: gid DOESN'T exist in UNIX security\n"));
838 return False;
839 }
840
841 DEBUG(10, ("get_domain_group_from_sid: gid exists in UNIX security\n"));
842
843 return True;
844 }
845
846 /****************************************************************************
847 Create a UNIX group on demand.
848 ****************************************************************************/
849
850 int smb_create_group(const char *unix_group, gid_t *new_gid)
851 {
852 pstring add_script;
853 int ret = -1;
854 int fd = 0;
855
856 *new_gid = 0;
857
858 /* defer to scripts */
859
860 if ( *lp_addgroup_script() ) {
861 pstrcpy(add_script, lp_addgroup_script());
862 pstring_sub(add_script, "%g", unix_group);
863 ret = smbrun(add_script, &fd);
864 DEBUG(ret ? 0 : 3,("smb_create_group: Running the command `%s' gave %d\n",add_script,ret));
865 if (ret != 0)
866 return ret;
867
868 if (fd != 0) {
869 fstring output;
870
871 *new_gid = 0;
872 if (read(fd, output, sizeof(output)) > 0) {
873 *new_gid = (gid_t)strtoul(output, NULL, 10);
874 }
875
876 close(fd);
877 }
878
879 }
880
881 if (*new_gid == 0) {
882 struct group *grp = getgrnam(unix_group);
883
884 if (grp != NULL)
885 *new_gid = grp->gr_gid;
886 }
887
888 return ret;
889 }
890
891 /****************************************************************************
892 Delete a UNIX group on demand.
893 ****************************************************************************/
894
895 int smb_delete_group(const char *unix_group)
896 {
897 pstring del_script;
898 int ret;
899
900 /* defer to scripts */
901
902 if ( *lp_delgroup_script() ) {
903 pstrcpy(del_script, lp_delgroup_script());
904 pstring_sub(del_script, "%g", unix_group);
905 ret = smbrun(del_script,NULL);
906 DEBUG(ret ? 0 : 3,("smb_delete_group: Running the command `%s' gave %d\n",del_script,ret));
907 return ret;
908 }
909
910 return -1;
911 }
912
913 /****************************************************************************
914 Set a user's primary UNIX group.
915 ****************************************************************************/
916 int smb_set_primary_group(const char *unix_group, const char* unix_user)
917 {
918 pstring add_script;
919 int ret;
920
921 /* defer to scripts */
922
923 if ( *lp_setprimarygroup_script() ) {
924 pstrcpy(add_script, lp_setprimarygroup_script());
925 all_string_sub(add_script, "%g", unix_group, sizeof(add_script));
926 all_string_sub(add_script, "%u", unix_user, sizeof(add_script));
927 ret = smbrun(add_script,NULL);
928 flush_pwnam_cache();
929 DEBUG(ret ? 0 : 3,("smb_set_primary_group: "
930 "Running the command `%s' gave %d\n",add_script,ret));
931 return ret;
932 }
933
934 return -1;
935 }
936
937 /****************************************************************************
938 Add a user to a UNIX group.
939 ****************************************************************************/
940
941 int smb_add_user_group(const char *unix_group, const char *unix_user)
942 {
943 pstring add_script;
944 int ret;
945
946 /* defer to scripts */
947
948 if ( *lp_addusertogroup_script() ) {
949 pstrcpy(add_script, lp_addusertogroup_script());
950 pstring_sub(add_script, "%g", unix_group);
951 pstring_sub(add_script, "%u", unix_user);
952 ret = smbrun(add_script,NULL);
953 DEBUG(ret ? 0 : 3,("smb_add_user_group: Running the command `%s' gave %d\n",add_script,ret));
954 return ret;
955 }
956
957 return -1;
958 }
959
960 /****************************************************************************
961 Delete a user from a UNIX group
962 ****************************************************************************/
963
964 int smb_delete_user_group(const char *unix_group, const char *unix_user)
965 {
966 pstring del_script;
967 int ret;
968
969 /* defer to scripts */
970
971 if ( *lp_deluserfromgroup_script() ) {
972 pstrcpy(del_script, lp_deluserfromgroup_script());
973 pstring_sub(del_script, "%g", unix_group);
974 pstring_sub(del_script, "%u", unix_user);
975 ret = smbrun(del_script,NULL);
976 DEBUG(ret ? 0 : 3,("smb_delete_user_group: Running the command `%s' gave %d\n",del_script,ret));
977 return ret;
978 }
979
980 return -1;
981 }
982
983
984 NTSTATUS pdb_default_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
985 DOM_SID sid)
986 {
987 return get_group_map_from_sid(sid, map) ?
988 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
989 }
990
991 NTSTATUS pdb_default_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
992 gid_t gid)
993 {
994 return get_group_map_from_gid(gid, map) ?
995 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
996 }
997
998 NTSTATUS pdb_default_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
999 const char *name)
1000 {
1001 return get_group_map_from_ntname(name, map) ?
1002 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1003 }
1004
1005 NTSTATUS pdb_default_add_group_mapping_entry(struct pdb_methods *methods,
1006 GROUP_MAP *map)
1007 {
1008 return add_mapping_entry(map, TDB_INSERT) ?
1009 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1010 }
1011
1012 NTSTATUS pdb_default_update_group_mapping_entry(struct pdb_methods *methods,
1013 GROUP_MAP *map)
1014 {
1015 return add_mapping_entry(map, TDB_REPLACE) ?
1016 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1017 }
1018
1019 NTSTATUS pdb_default_delete_group_mapping_entry(struct pdb_methods *methods,
1020 DOM_SID sid)
1021 {
1022 return group_map_remove(&sid) ?
1023 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1024 }
1025
1026 NTSTATUS pdb_default_enum_group_mapping(struct pdb_methods *methods,
1027 const DOM_SID *sid, enum SID_NAME_USE sid_name_use,
1028 GROUP_MAP **pp_rmap, size_t *p_num_entries,
1029 BOOL unix_only)
1030 {
1031 return enum_group_mapping(sid, sid_name_use, pp_rmap, p_num_entries, unix_only) ?
1032 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1033 }
1034
1035 NTSTATUS pdb_default_find_alias(struct pdb_methods *methods,
1036 const char *name, DOM_SID *sid)
1037 {
1038 GROUP_MAP map;
1039
1040 if (!pdb_getgrnam(&map, name))
1041 return NT_STATUS_NO_SUCH_ALIAS;
1042
1043 if ((map.sid_name_use != SID_NAME_WKN_GRP) &&
1044 (map.sid_name_use != SID_NAME_ALIAS))
1045 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1046
1047 sid_copy(sid, &map.sid);
1048 return NT_STATUS_OK;
1049 }
1050
1051 NTSTATUS pdb_default_create_alias(struct pdb_methods *methods,
1052 const char *name, uint32 *rid)
1053 {
1054 DOM_SID sid;
1055 enum SID_NAME_USE type;
1056 uint32 new_rid;
1057 gid_t gid;
1058 BOOL exists;
1059 GROUP_MAP map;
1060 TALLOC_CTX *mem_ctx;
1061 NTSTATUS status;
1062
1063 DEBUG(10, ("Trying to create alias %s\n", name));
1064
1065 mem_ctx = talloc_new(NULL);
1066 if (mem_ctx == NULL) {
1067 return NT_STATUS_NO_MEMORY;
1068 }
1069
1070 exists = lookup_name(mem_ctx, name, LOOKUP_NAME_ISOLATED,
1071 NULL, NULL, &sid, &type);
1072 TALLOC_FREE(mem_ctx);
1073
1074 if (exists) {
1075 return NT_STATUS_ALIAS_EXISTS;
1076 }
1077
1078 if (!winbind_allocate_gid(&gid)) {
1079 DEBUG(3, ("Could not get a gid out of winbind\n"));
1080 return NT_STATUS_ACCESS_DENIED;
1081 }
1082
1083 if (!pdb_new_rid(&new_rid)) {
1084 DEBUG(0, ("Could not allocate a RID -- wasted a gid :-(\n"));
1085 return NT_STATUS_ACCESS_DENIED;
1086 }
1087
1088 DEBUG(10, ("Creating alias %s with gid %d and rid %d\n",
1089 name, gid, new_rid));
1090
1091 sid_copy(&sid, get_global_sam_sid());
1092 sid_append_rid(&sid, new_rid);
1093
1094 map.gid = gid;
1095 sid_copy(&map.sid, &sid);
1096 map.sid_name_use = SID_NAME_ALIAS;
1097 fstrcpy(map.nt_name, name);
1098 fstrcpy(map.comment, "");
1099
1100 status = pdb_add_group_mapping_entry(&map);
1101
1102 if (!NT_STATUS_IS_OK(status)) {
1103 DEBUG(0, ("Could not add group mapping entry for alias %s "
1104 "(%s)\n", name, nt_errstr(status)));
1105 return status;
1106 }
1107
1108 *rid = new_rid;
1109
1110 return NT_STATUS_OK;
1111 }
1112
1113 NTSTATUS pdb_default_delete_alias(struct pdb_methods *methods,
1114 const DOM_SID *sid)
1115 {
1116 return pdb_delete_group_mapping_entry(*sid);
1117 }
1118
1119 NTSTATUS pdb_default_get_aliasinfo(struct pdb_methods *methods,
1120 const DOM_SID *sid,
1121 struct acct_info *info)
1122 {
1123 GROUP_MAP map;
1124
1125 if (!pdb_getgrsid(&map, *sid))
1126 return NT_STATUS_NO_SUCH_ALIAS;
1127
1128 if ((map.sid_name_use != SID_NAME_ALIAS) &&
1129 (map.sid_name_use != SID_NAME_WKN_GRP)) {
1130 DEBUG(2, ("%s is a %s, expected an alias\n",
1131 sid_string_static(sid),
1132 sid_type_lookup(map.sid_name_use)));
1133 return NT_STATUS_NO_SUCH_ALIAS;
1134 }
1135
1136 fstrcpy(info->acct_name, map.nt_name);
1137 fstrcpy(info->acct_desc, map.comment);
1138 sid_peek_rid(&map.sid, &info->rid);
1139 return NT_STATUS_OK;
1140 }
1141
1142 NTSTATUS pdb_default_set_aliasinfo(struct pdb_methods *methods,
1143 const DOM_SID *sid,
1144 struct acct_info *info)
1145 {
1146 GROUP_MAP map;
1147
1148 if (!pdb_getgrsid(&map, *sid))
1149 return NT_STATUS_NO_SUCH_ALIAS;
1150
1151 fstrcpy(map.comment, info->acct_desc);
1152
1153 return pdb_update_group_mapping_entry(&map);
1154 }
1155
1156 NTSTATUS pdb_default_add_aliasmem(struct pdb_methods *methods,
1157 const DOM_SID *alias, const DOM_SID *member)
1158 {
1159 return add_aliasmem(alias, member);
1160 }
1161
1162 NTSTATUS pdb_default_del_aliasmem(struct pdb_methods *methods,
1163 const DOM_SID *alias, const DOM_SID *member)
1164 {
1165 return del_aliasmem(alias, member);
1166 }
1167
1168 NTSTATUS pdb_default_enum_aliasmem(struct pdb_methods *methods,
1169 const DOM_SID *alias, DOM_SID **pp_members,
1170 size_t *p_num_members)
1171 {
1172 return enum_aliasmem(alias, pp_members, p_num_members);
1173 }
1174
1175 NTSTATUS pdb_default_alias_memberships(struct pdb_methods *methods,
1176 TALLOC_CTX *mem_ctx,
1177 const DOM_SID *domain_sid,
1178 const DOM_SID *members,
1179 size_t num_members,
1180 uint32 **pp_alias_rids,
1181 size_t *p_num_alias_rids)
1182 {
1183 DOM_SID *alias_sids;
1184 size_t i, num_alias_sids;
1185 NTSTATUS result;
1186
1187 alias_sids = NULL;
1188 num_alias_sids = 0;
1189
1190 result = alias_memberships(members, num_members,
1191 &alias_sids, &num_alias_sids);
1192
1193 if (!NT_STATUS_IS_OK(result))
1194 return result;
1195
1196 *pp_alias_rids = TALLOC_ARRAY(mem_ctx, uint32, num_alias_sids);
1197 if (*pp_alias_rids == NULL)
1198 return NT_STATUS_NO_MEMORY;
1199
1200 *p_num_alias_rids = 0;
1201
1202 for (i=0; i<num_alias_sids; i++) {
1203 if (!sid_peek_check_rid(domain_sid, &alias_sids[i],
1204 &(*pp_alias_rids)[*p_num_alias_rids]))
1205 continue;
1206 *p_num_alias_rids += 1;
1207 }
1208
1209 SAFE_FREE(alias_sids);
1210
1211 return NT_STATUS_OK;
1212 }
1213
1214 /**********************************************************************
1215 no ops for passdb backends that don't implement group mapping
1216 *********************************************************************/
1217
1218 NTSTATUS pdb_nop_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
1219 DOM_SID sid)
1220 {
1221 return NT_STATUS_UNSUCCESSFUL;
1222 }
1223
1224 NTSTATUS pdb_nop_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
1225 gid_t gid)
1226 {
1227 return NT_STATUS_UNSUCCESSFUL;
1228 }
1229
1230 NTSTATUS pdb_nop_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
1231 const char *name)
1232 {
1233 return NT_STATUS_UNSUCCESSFUL;
1234 }
1235
1236 NTSTATUS pdb_nop_add_group_mapping_entry(struct pdb_methods *methods,
1237 GROUP_MAP *map)
1238 {
1239 return NT_STATUS_UNSUCCESSFUL;
1240 }
1241
1242 NTSTATUS pdb_nop_update_group_mapping_entry(struct pdb_methods *methods,
1243 GROUP_MAP *map)
1244 {
1245 return NT_STATUS_UNSUCCESSFUL;
1246 }
1247
1248 NTSTATUS pdb_nop_delete_group_mapping_entry(struct pdb_methods *methods,
1249 DOM_SID sid)
1250 {
1251 return NT_STATUS_UNSUCCESSFUL;
1252 }
1253
1254 NTSTATUS pdb_nop_enum_group_mapping(struct pdb_methods *methods,
1255 enum SID_NAME_USE sid_name_use,
1256 GROUP_MAP **rmap, size_t *num_entries,
1257 BOOL unix_only)
1258 {
1259 return NT_STATUS_UNSUCCESSFUL;
1260 }
1261
1262 /****************************************************************************
1263 These need to be redirected through pdb_interface.c
1264 ****************************************************************************/
1265 BOOL pdb_get_dom_grp_info(const DOM_SID *sid, struct acct_info *info)
1266 {
1267 GROUP_MAP map;
1268 BOOL res;
1269
1270 become_root();
1271 res = get_domain_group_from_sid(*sid, &map);
1272 unbecome_root();
1273
1274 if (!res)
1275 return False;
1276
1277 fstrcpy(info->acct_name, map.nt_name);
1278 fstrcpy(info->acct_desc, map.comment);
1279 sid_peek_rid(sid, &info->rid);
1280 return True;
1281 }
1282
1283 BOOL pdb_set_dom_grp_info(const DOM_SID *sid, const struct acct_info *info)
1284 {
1285 GROUP_MAP map;
1286
1287 if (!get_domain_group_from_sid(*sid, &map))
1288 return False;
1289
1290 fstrcpy(map.nt_name, info->acct_name);
1291 fstrcpy(map.comment, info->acct_desc);
1292
1293 return NT_STATUS_IS_OK(pdb_update_group_mapping_entry(&map));
1294 }
1295
1296 /********************************************************************
1297 Really just intended to be called by smbd
1298 ********************************************************************/
1299
1300 NTSTATUS pdb_create_builtin_alias(uint32 rid)
1301 {
1302 DOM_SID sid;
1303 enum SID_NAME_USE type;
1304 gid_t gid;
1305 GROUP_MAP map;
1306 TALLOC_CTX *mem_ctx;
1307 NTSTATUS status;
1308 const char *name = NULL;
1309 fstring groupname;
1310
1311 DEBUG(10, ("Trying to create builtin alias %d\n", rid));
1312
1313 if ( !sid_compose( &sid, &global_sid_Builtin, rid ) ) {
1314 return NT_STATUS_NO_SUCH_ALIAS;
1315 }
1316
1317 if ( (mem_ctx = talloc_new(NULL)) == NULL ) {
1318 return NT_STATUS_NO_MEMORY;
1319 }
1320
1321 if ( !lookup_sid(mem_ctx, &sid, NULL, &name, &type) ) {
1322 TALLOC_FREE( mem_ctx );
1323 return NT_STATUS_NO_SUCH_ALIAS;
1324 }
1325
1326 /* validate RID so copy the name and move on */
1327
1328 fstrcpy( groupname, name );
1329 TALLOC_FREE( mem_ctx );
1330
1331 if (!winbind_allocate_gid(&gid)) {
1332 DEBUG(3, ("pdb_create_builtin_alias: Could not get a gid out of winbind\n"));
1333 return NT_STATUS_ACCESS_DENIED;
1334 }
1335
1336 DEBUG(10,("Creating alias %s with gid %d\n", name, gid));
1337
1338 map.gid = gid;
1339 sid_copy(&map.sid, &sid);
1340 map.sid_name_use = SID_NAME_ALIAS;
1341 fstrcpy(map.nt_name, name);
1342 fstrcpy(map.comment, "");
1343
1344 status = pdb_add_group_mapping_entry(&map);
1345
1346 if (!NT_STATUS_IS_OK(status)) {
1347 DEBUG(0, ("pdb_create_builtin_alias: Could not add group mapping entry for alias %d "
1348 "(%s)\n", rid, nt_errstr(status)));
1349 }
1350
1351 return status;
1352 }
1353
1354
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