Merge from 3.0:
[gd/samba/.git] / source3 / groupdb / mapping.c
1 /* 
2  *  Unix SMB/CIFS implementation.
3  *  RPC Pipe client / server routines
4  *  Copyright (C) Andrew Tridgell              1992-2000,
5  *  Copyright (C) Jean Fran├žois Micouleau      1998-2001.
6  *  
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 2 of the License, or
10  *  (at your option) any later version.
11  *  
12  *  This program is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *  GNU General Public License for more details.
16  *  
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, write to the Free Software
19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20  */
21
22 #include "includes.h"
23
24 static TDB_CONTEXT *tdb; /* used for driver files */
25
26 #define DATABASE_VERSION_V1 1 /* native byte format. */
27 #define DATABASE_VERSION_V2 2 /* le format. */
28
29 #define GROUP_PREFIX "UNIXGROUP/"
30
31 PRIVS privs[] = {
32         {SE_PRIV_NONE,           "no_privs",                  "No privilege"                    }, /* this one MUST be first */
33         {SE_PRIV_ADD_MACHINES,   "SeMachineAccountPrivilege", "Add workstations to the domain"  },
34         {SE_PRIV_SEC_PRIV,       "SeSecurityPrivilege",       "Manage the audit logs"           },
35         {SE_PRIV_TAKE_OWNER,     "SeTakeOwnershipPrivilege",  "Take ownership of file"          },
36         {SE_PRIV_ADD_USERS,      "SaAddUsers",                "Add users to the domain - Samba" },
37         {SE_PRIV_PRINT_OPERATOR, "SaPrintOp",                 "Add or remove printers - Samba"  },
38         {SE_PRIV_ALL,            "SaAllPrivs",                "all privileges"                  }
39 };
40
41
42 /****************************************************************************
43 dump the mapping group mapping to a text file
44 ****************************************************************************/
45 char *decode_sid_name_use(fstring group, enum SID_NAME_USE name_use)
46 {       
47         static fstring group_type;
48
49         switch(name_use) {
50                 case SID_NAME_USER:
51                         fstrcpy(group_type,"User");
52                         break;
53                 case SID_NAME_DOM_GRP:
54                         fstrcpy(group_type,"Domain group");
55                         break;
56                 case SID_NAME_DOMAIN:
57                         fstrcpy(group_type,"Domain");
58                         break;
59                 case SID_NAME_ALIAS:
60                         fstrcpy(group_type,"Local group");
61                         break;
62                 case SID_NAME_WKN_GRP:
63                         fstrcpy(group_type,"Builtin group");
64                         break;
65                 case SID_NAME_DELETED:
66                         fstrcpy(group_type,"Deleted");
67                         break;
68                 case SID_NAME_INVALID:
69                         fstrcpy(group_type,"Invalid");
70                         break;
71                 case SID_NAME_UNKNOWN:
72                 default:
73                         fstrcpy(group_type,"Unknown type");
74                         break;
75         }
76         
77         fstrcpy(group, group_type);
78         return group_type;
79 }
80
81 /****************************************************************************
82 initialise first time the mapping list - called from init_group_mapping()
83 ****************************************************************************/
84 static BOOL default_group_mapping(void)
85 {
86         DOM_SID sid_admins;
87         DOM_SID sid_users;
88         DOM_SID sid_guests;
89         fstring str_admins;
90         fstring str_users;
91         fstring str_guests;
92
93         /* Add the Wellknown groups */
94
95         add_initial_entry(-1, "S-1-5-32-544", SID_NAME_WKN_GRP, "Administrators", "");
96         add_initial_entry(-1, "S-1-5-32-545", SID_NAME_WKN_GRP, "Users", "");
97         add_initial_entry(-1, "S-1-5-32-546", SID_NAME_WKN_GRP, "Guests", "");
98         add_initial_entry(-1, "S-1-5-32-547", SID_NAME_WKN_GRP, "Power Users", "");
99         add_initial_entry(-1, "S-1-5-32-548", SID_NAME_WKN_GRP, "Account Operators", "");
100         add_initial_entry(-1, "S-1-5-32-549", SID_NAME_WKN_GRP, "System Operators", "");
101         add_initial_entry(-1, "S-1-5-32-550", SID_NAME_WKN_GRP, "Print Operators", "");
102         add_initial_entry(-1, "S-1-5-32-551", SID_NAME_WKN_GRP, "Backup Operators", "");
103         add_initial_entry(-1, "S-1-5-32-552", SID_NAME_WKN_GRP, "Replicators", "");
104
105         /* Add the defaults domain groups */
106
107         sid_copy(&sid_admins, get_global_sam_sid());
108         sid_append_rid(&sid_admins, DOMAIN_GROUP_RID_ADMINS);
109         sid_to_string(str_admins, &sid_admins);
110         add_initial_entry(-1, str_admins, SID_NAME_DOM_GRP, "Domain Admins", "");
111
112         sid_copy(&sid_users,  get_global_sam_sid());
113         sid_append_rid(&sid_users,  DOMAIN_GROUP_RID_USERS);
114         sid_to_string(str_users, &sid_users);
115         add_initial_entry(-1, str_users,  SID_NAME_DOM_GRP, "Domain Users",  "");
116
117         sid_copy(&sid_guests, get_global_sam_sid());
118         sid_append_rid(&sid_guests, DOMAIN_GROUP_RID_GUESTS);
119         sid_to_string(str_guests, &sid_guests);
120         add_initial_entry(-1, str_guests, SID_NAME_DOM_GRP, "Domain Guests", "");
121
122         return True;
123 }
124
125 /****************************************************************************
126  Open the group mapping tdb.
127 ****************************************************************************/
128
129 static BOOL init_group_mapping(void)
130 {
131         static pid_t local_pid;
132         const char *vstring = "INFO/version";
133         int32 vers_id;
134         
135         if (tdb && local_pid == sys_getpid())
136                 return True;
137         tdb = tdb_open_log(lock_path("group_mapping.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
138         if (!tdb) {
139                 DEBUG(0,("Failed to open group mapping database\n"));
140                 return False;
141         }
142
143         local_pid = sys_getpid();
144
145         /* handle a Samba upgrade */
146         tdb_lock_bystring(tdb, vstring, 0);
147
148         /* Cope with byte-reversed older versions of the db. */
149         vers_id = tdb_fetch_int32(tdb, vstring);
150         if ((vers_id == DATABASE_VERSION_V1) || (IREV(vers_id) == DATABASE_VERSION_V1)) {
151                 /* Written on a bigendian machine with old fetch_int code. Save as le. */
152                 tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2);
153                 vers_id = DATABASE_VERSION_V2;
154         }
155
156         if (vers_id != DATABASE_VERSION_V2) {
157                 tdb_traverse(tdb, tdb_traverse_delete_fn, NULL);
158                 tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2);
159         }
160
161         tdb_unlock_bystring(tdb, vstring);
162
163         /* write a list of default groups */
164         if(!default_group_mapping())
165                 return False;
166
167         return True;
168 }
169
170 /****************************************************************************
171 ****************************************************************************/
172 static BOOL add_mapping_entry(GROUP_MAP *map, int flag)
173 {
174         TDB_DATA kbuf, dbuf;
175         pstring key, buf;
176         fstring string_sid="";
177         int len;
178
179         if(!init_group_mapping()) {
180                 DEBUG(0,("failed to initialize group mapping"));
181                 return(False);
182         }
183         
184         sid_to_string(string_sid, &map->sid);
185
186         len = tdb_pack(buf, sizeof(buf), "ddff",
187                         map->gid, map->sid_name_use, map->nt_name, map->comment);
188
189         if (len > sizeof(buf))
190                 return False;
191
192         slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
193
194         kbuf.dsize = strlen(key)+1;
195         kbuf.dptr = key;
196         dbuf.dsize = len;
197         dbuf.dptr = buf;
198         if (tdb_store(tdb, kbuf, dbuf, flag) != 0) return False;
199
200         return True;
201 }
202
203 /****************************************************************************
204 initialise first time the mapping list
205 ****************************************************************************/
206 BOOL add_initial_entry(gid_t gid, const char *sid, enum SID_NAME_USE sid_name_use, const char *nt_name, const char *comment)
207 {
208         GROUP_MAP map;
209
210         if(!init_group_mapping()) {
211                 DEBUG(0,("failed to initialize group mapping"));
212                 return(False);
213         }
214         
215         map.gid=gid;
216         if (!string_to_sid(&map.sid, sid)) {
217                 DEBUG(0, ("string_to_sid failed: %s", sid));
218                 return False;
219         }
220         
221         map.sid_name_use=sid_name_use;
222         fstrcpy(map.nt_name, nt_name);
223         fstrcpy(map.comment, comment);
224
225         return pdb_add_group_mapping_entry(&map);
226 }
227
228 /****************************************************************************
229  Return the sid and the type of the unix group.
230 ****************************************************************************/
231
232 static BOOL get_group_map_from_sid(DOM_SID sid, GROUP_MAP *map)
233 {
234         TDB_DATA kbuf, dbuf;
235         pstring key;
236         fstring string_sid;
237         int ret = 0;
238         
239         if(!init_group_mapping()) {
240                 DEBUG(0,("failed to initialize group mapping"));
241                 return(False);
242         }
243
244         /* the key is the SID, retrieving is direct */
245
246         sid_to_string(string_sid, &sid);
247         slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
248
249         kbuf.dptr = key;
250         kbuf.dsize = strlen(key)+1;
251                 
252         dbuf = tdb_fetch(tdb, kbuf);
253         if (!dbuf.dptr)
254                 return False;
255
256         ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
257                                 &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
258
259         SAFE_FREE(dbuf.dptr);
260         
261         if ( ret == -1 ) {
262                 DEBUG(3,("get_group_map_from_sid: tdb_unpack failure\n"));
263                 return False;
264         }
265
266         sid_copy(&map->sid, &sid);
267         
268         return True;
269 }
270
271 /****************************************************************************
272  Return the sid and the type of the unix group.
273 ****************************************************************************/
274
275 static BOOL get_group_map_from_gid(gid_t gid, GROUP_MAP *map)
276 {
277         TDB_DATA kbuf, dbuf, newkey;
278         fstring string_sid;
279         int ret;
280
281         if(!init_group_mapping()) {
282                 DEBUG(0,("failed to initialize group mapping"));
283                 return(False);
284         }
285
286         /* we need to enumerate the TDB to find the GID */
287
288         for (kbuf = tdb_firstkey(tdb); 
289              kbuf.dptr; 
290              newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
291
292                 if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
293                 
294                 dbuf = tdb_fetch(tdb, kbuf);
295                 if (!dbuf.dptr)
296                         continue;
297
298                 fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
299
300                 string_to_sid(&map->sid, string_sid);
301                 
302                 ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
303                                  &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
304
305                 SAFE_FREE(dbuf.dptr);
306
307                 if ( ret == -1 ) {
308                         DEBUG(3,("get_group_map_from_gid: tdb_unpack failure\n"));
309                         return False;
310                 }
311         
312                 if (gid==map->gid) {
313                         SAFE_FREE(kbuf.dptr);
314                         return True;
315                 }
316         }
317
318         return False;
319 }
320
321 /****************************************************************************
322  Return the sid and the type of the unix group.
323 ****************************************************************************/
324
325 static BOOL get_group_map_from_ntname(const char *name, GROUP_MAP *map)
326 {
327         TDB_DATA kbuf, dbuf, newkey;
328         fstring string_sid;
329         int ret;
330
331         if(!init_group_mapping()) {
332                 DEBUG(0,("get_group_map_from_ntname:failed to initialize group mapping"));
333                 return(False);
334         }
335
336         /* we need to enumerate the TDB to find the name */
337
338         for (kbuf = tdb_firstkey(tdb); 
339              kbuf.dptr; 
340              newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
341
342                 if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
343                 
344                 dbuf = tdb_fetch(tdb, kbuf);
345                 if (!dbuf.dptr)
346                         continue;
347
348                 fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
349
350                 string_to_sid(&map->sid, string_sid);
351                 
352                 ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
353                                  &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
354
355                 SAFE_FREE(dbuf.dptr);
356                 
357                 if ( ret == -1 ) {
358                         DEBUG(3,("get_group_map_from_ntname: tdb_unpack failure\n"));
359                         return False;
360                 }
361
362                 if (StrCaseCmp(name, map->nt_name)==0) {
363                         SAFE_FREE(kbuf.dptr);
364                         return True;
365                 }
366         }
367
368         return False;
369 }
370
371 /****************************************************************************
372  Remove a group mapping entry.
373 ****************************************************************************/
374
375 static BOOL group_map_remove(DOM_SID sid)
376 {
377         TDB_DATA kbuf, dbuf;
378         pstring key;
379         fstring string_sid;
380         
381         if(!init_group_mapping()) {
382                 DEBUG(0,("failed to initialize group mapping"));
383                 return(False);
384         }
385
386         /* the key is the SID, retrieving is direct */
387
388         sid_to_string(string_sid, &sid);
389         slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
390
391         kbuf.dptr = key;
392         kbuf.dsize = strlen(key)+1;
393                 
394         dbuf = tdb_fetch(tdb, kbuf);
395         if (!dbuf.dptr)
396                 return False;
397         
398         SAFE_FREE(dbuf.dptr);
399
400         if(tdb_delete(tdb, kbuf) != TDB_SUCCESS)
401                 return False;
402
403         return True;
404 }
405
406 /****************************************************************************
407  Enumerate the group mapping.
408 ****************************************************************************/
409
410 static BOOL enum_group_mapping(enum SID_NAME_USE sid_name_use, GROUP_MAP **rmap,
411                         int *num_entries, BOOL unix_only)
412 {
413         TDB_DATA kbuf, dbuf, newkey;
414         fstring string_sid;
415         fstring group_type;
416         GROUP_MAP map;
417         GROUP_MAP *mapt;
418         int ret;
419         int entries=0;
420
421         if(!init_group_mapping()) {
422                 DEBUG(0,("failed to initialize group mapping"));
423                 return(False);
424         }
425
426         *num_entries=0;
427         *rmap=NULL;
428
429         for (kbuf = tdb_firstkey(tdb); 
430              kbuf.dptr; 
431              newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
432
433                 if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0)
434                         continue;
435
436                 dbuf = tdb_fetch(tdb, kbuf);
437                 if (!dbuf.dptr)
438                         continue;
439
440                 fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
441                                 
442                 ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
443                                  &map.gid, &map.sid_name_use, &map.nt_name, &map.comment);
444
445                 SAFE_FREE(dbuf.dptr);
446
447                 if ( ret == -1 ) {
448                         DEBUG(3,("enum_group_mapping: tdb_unpack failure\n"));
449                         continue;
450                 }
451         
452                 /* list only the type or everything if UNKNOWN */
453                 if (sid_name_use!=SID_NAME_UNKNOWN  && sid_name_use!=map.sid_name_use) {
454                         DEBUG(11,("enum_group_mapping: group %s is not of the requested type\n", map.nt_name));
455                         continue;
456                 }
457
458                 if (unix_only==ENUM_ONLY_MAPPED && map.gid==-1) {
459                         DEBUG(11,("enum_group_mapping: group %s is non mapped\n", map.nt_name));
460                         continue;
461                 }
462
463                 string_to_sid(&map.sid, string_sid);
464                 
465                 decode_sid_name_use(group_type, map.sid_name_use);
466                 DEBUG(11,("enum_group_mapping: returning group %s of type %s\n", map.nt_name ,group_type));
467
468                 mapt=(GROUP_MAP *)Realloc((*rmap), (entries+1)*sizeof(GROUP_MAP));
469                 if (!mapt) {
470                         DEBUG(0,("enum_group_mapping: Unable to enlarge group map!\n"));
471                         SAFE_FREE(*rmap);
472                         return False;
473                 }
474                 else
475                         (*rmap) = mapt;
476
477                 mapt[entries].gid = map.gid;
478                 sid_copy( &mapt[entries].sid, &map.sid);
479                 mapt[entries].sid_name_use = map.sid_name_use;
480                 fstrcpy(mapt[entries].nt_name, map.nt_name);
481                 fstrcpy(mapt[entries].comment, map.comment);
482
483                 entries++;
484
485         }
486
487         *num_entries=entries;
488
489         return True;
490 }
491
492 /*
493  *
494  * High level functions
495  * better to use them than the lower ones.
496  *
497  * we are checking if the group is in the mapping file
498  * and if the group is an existing unix group
499  *
500  */
501
502 /* get a domain group from it's SID */
503
504 BOOL get_domain_group_from_sid(DOM_SID sid, GROUP_MAP *map)
505 {
506         struct group *grp;
507         BOOL ret;
508         
509         if(!init_group_mapping()) {
510                 DEBUG(0,("failed to initialize group mapping"));
511                 return(False);
512         }
513
514         DEBUG(10, ("get_domain_group_from_sid\n"));
515
516         /* if the group is NOT in the database, it CAN NOT be a domain group */
517         
518         become_root();
519         ret = pdb_getgrsid(map, sid);
520         unbecome_root();
521         
522         if ( !ret ) 
523                 return False;
524
525         DEBUG(10, ("get_domain_group_from_sid: SID found in the TDB\n"));
526
527         /* if it's not a domain group, continue */
528         if (map->sid_name_use!=SID_NAME_DOM_GRP) {
529                 return False;
530         }
531
532         DEBUG(10, ("get_domain_group_from_sid: SID is a domain group\n"));
533         
534         if (map->gid==-1) {
535                 return False;
536         }
537
538         DEBUG(10, ("get_domain_group_from_sid: SID is mapped to gid:%lu\n",(unsigned long)map->gid));
539         
540         grp = getgrgid(map->gid);
541         if ( !grp ) {
542                 DEBUG(10, ("get_domain_group_from_sid: gid DOESN'T exist in UNIX security\n"));
543                 return False;
544         }
545
546         DEBUG(10, ("get_domain_group_from_sid: gid exists in UNIX security\n"));
547
548         return True;
549 }
550
551
552 /* get a local (alias) group from it's SID */
553
554 BOOL get_local_group_from_sid(DOM_SID *sid, GROUP_MAP *map)
555 {
556         BOOL ret;
557         
558         if(!init_group_mapping()) {
559                 DEBUG(0,("failed to initialize group mapping"));
560                 return(False);
561         }
562
563         /* The group is in the mapping table */
564         become_root();
565         ret = pdb_getgrsid(map, *sid);
566         unbecome_root();
567         
568         if ( !ret )
569                 return False;
570                 
571         if ( (map->sid_name_use != SID_NAME_ALIAS)
572                 || (map->gid == -1)
573                 || (getgrgid(map->gid) == NULL) ) 
574         {
575                 return False;
576         }               
577                         
578 #if 1   /* JERRY */
579         /* local groups only exist in the group mapping DB so this 
580            is not necessary */
581            
582         else {
583                 /* the group isn't in the mapping table.
584                  * make one based on the unix information */
585                 uint32 alias_rid;
586                 struct group *grp;
587
588                 sid_peek_rid(sid, &alias_rid);
589                 map->gid=pdb_group_rid_to_gid(alias_rid);
590                 
591                 grp = getgrgid(map->gid);
592                 if ( !grp ) {
593                         DEBUG(3,("get_local_group_from_sid: No unix group for [%ul]\n", map->gid));
594                         return False;
595                 }
596
597                 map->sid_name_use=SID_NAME_ALIAS;
598
599                 fstrcpy(map->nt_name, grp->gr_name);
600                 fstrcpy(map->comment, "Local Unix Group");
601
602                 sid_copy(&map->sid, sid);
603         }
604 #endif
605
606         return True;
607 }
608
609 /* get a builtin group from it's SID */
610
611 BOOL get_builtin_group_from_sid(DOM_SID *sid, GROUP_MAP *map)
612 {
613         struct group *grp;
614         BOOL ret;
615         
616
617         if(!init_group_mapping()) {
618                 DEBUG(0,("failed to initialize group mapping"));
619                 return(False);
620         }
621
622         become_root();
623         ret = pdb_getgrsid(map, *sid);
624         unbecome_root();
625         
626         if ( !ret )
627                 return False;
628
629         if (map->sid_name_use!=SID_NAME_WKN_GRP) {
630                 return False;
631         }
632
633         if (map->gid==-1) {
634                 return False;
635         }
636
637         if ( (grp=getgrgid(map->gid)) == NULL) {
638                 return False;
639         }
640
641         return True;
642 }
643
644
645
646 /****************************************************************************
647 Returns a GROUP_MAP struct based on the gid.
648 ****************************************************************************/
649 BOOL get_group_from_gid(gid_t gid, GROUP_MAP *map)
650 {
651         struct group *grp;
652         BOOL ret;
653
654         if(!init_group_mapping()) {
655                 DEBUG(0,("failed to initialize group mapping"));
656                 return(False);
657         }
658
659         if ( (grp=getgrgid(gid)) == NULL)
660                 return False;
661
662         /*
663          * make a group map from scratch if doesn't exist.
664          */
665         
666         become_root();
667         ret = pdb_getgrgid(map, gid);
668         unbecome_root();
669         
670         if ( !ret ) {
671                 map->gid=gid;
672                 map->sid_name_use=SID_NAME_ALIAS;
673
674                 /* interim solution until we have a last RID allocated */
675
676                 sid_copy(&map->sid, get_global_sam_sid());
677                 sid_append_rid(&map->sid, pdb_gid_to_group_rid(gid));
678
679                 fstrcpy(map->nt_name, grp->gr_name);
680                 fstrcpy(map->comment, "Local Unix Group");
681         }
682         
683         return True;
684 }
685
686
687
688
689 /****************************************************************************
690  Get the member users of a group and
691  all the users who have that group as primary.
692             
693  give back an array of SIDS
694  return the grand number of users
695
696
697  TODO: sort the list and remove duplicate. JFM.
698
699 ****************************************************************************/
700         
701 BOOL get_sid_list_of_group(gid_t gid, DOM_SID **sids, int *num_sids)
702 {
703         struct group *grp;
704         struct passwd *pwd;
705         int i=0;
706         char *gr;
707         DOM_SID *s;
708  
709         if(!init_group_mapping()) {
710                 DEBUG(0,("failed to initialize group mapping"));
711                 return(False);
712         }
713
714         *num_sids = 0;
715         *sids=NULL;
716         
717         if ( (grp=getgrgid(gid)) == NULL)
718                 return False;
719
720         gr = grp->gr_mem[0];
721         DEBUG(10, ("getting members\n"));
722         
723         while (gr && (*gr != (char)'\0')) {
724                 SAM_ACCOUNT *group_member_acct = NULL;
725                 BOOL found_user;
726                 s = Realloc((*sids), sizeof(**sids)*(*num_sids+1));
727                 if (!s) {
728                         DEBUG(0,("get_uid_list_of_group: unable to enlarge SID list!\n"));
729                         return False;
730                 }
731                 else (*sids) = s;
732
733                 if (!NT_STATUS_IS_OK(pdb_init_sam(&group_member_acct))) {
734                         continue;
735                 }
736
737                 become_root();
738                 found_user = pdb_getsampwnam(group_member_acct, gr);
739                 unbecome_root();
740         
741                 if (found_user) {
742                         sid_copy(&(*sids)[*num_sids], pdb_get_user_sid(group_member_acct));
743                         (*num_sids)++;
744                 }
745         
746                 pdb_free_sam(&group_member_acct);
747
748                 gr = grp->gr_mem[++i];
749         }
750         DEBUG(10, ("got [%d] members\n", *num_sids));
751
752         winbind_off();
753
754         setpwent();
755         while ((pwd=getpwent()) != NULL) {
756                 if (pwd->pw_gid==gid) {
757                         SAM_ACCOUNT *group_member_acct = NULL;
758                         BOOL found_user;
759                         s = Realloc((*sids), sizeof(**sids)*(*num_sids+1));
760                         if (!s) {
761                                 DEBUG(0,("get_sid_list_of_group: unable to enlarge SID list!\n"));
762                                 winbind_on();
763                                 return False;
764                         }
765                         else (*sids) = s;
766                         
767                         if (!NT_STATUS_IS_OK(pdb_init_sam(&group_member_acct))) {
768                                 continue;
769                         }
770                         
771                         become_root();
772                         found_user = pdb_getsampwnam(group_member_acct, pwd->pw_name);
773                         unbecome_root();
774                         
775                         if (found_user) {
776                                 sid_copy(&(*sids)[*num_sids], pdb_get_user_sid(group_member_acct));
777                                 (*num_sids)++;
778                         } else {
779                                 DEBUG(4,("get_sid_list_of_group: User %s [uid == %lu] has no samba account\n",
780                                          pwd->pw_name, (unsigned long)pwd->pw_uid));
781                                 if (algorithmic_uid_to_sid(&(*sids)[*num_sids], pwd->pw_uid))
782                                         (*num_sids)++;
783                         }
784         
785                         pdb_free_sam(&group_member_acct);
786                 }
787         }
788         endpwent();
789         DEBUG(10, ("got primary groups, members: [%d]\n", *num_sids));
790
791         winbind_on();
792         return True;
793 }
794
795 /****************************************************************************
796  Create a UNIX group on demand.
797 ****************************************************************************/
798
799 int smb_create_group(char *unix_group, gid_t *new_gid)
800 {
801         pstring add_script;
802         int     ret = -1;
803         int     fd = 0;
804         
805         *new_gid = 0;
806
807         /* defer to scripts */
808         
809         if ( *lp_addgroup_script() ) {
810                 pstrcpy(add_script, lp_addgroup_script());
811                 pstring_sub(add_script, "%g", unix_group);
812                 ret = smbrun(add_script, (new_gid!=NULL) ? &fd : NULL);
813                 DEBUG(3,("smb_create_group: Running the command `%s' gave %d\n",add_script,ret));
814                 if (ret != 0)
815                         return ret;
816                         
817                 if (fd != 0) {
818                         fstring output;
819
820                         *new_gid = 0;
821                         if (read(fd, output, sizeof(output)) > 0) {
822                                 *new_gid = (gid_t)strtoul(output, NULL, 10);
823                         }
824                         
825                         close(fd);
826                 }
827         }
828
829         /* Try winbindd */
830
831         if ( winbind_create_group( unix_group, NULL ) ) {
832                 DEBUG(3,("smb_create_group: winbindd created the group (%s)\n",
833                         unix_group));
834                 ret = 0;
835         }
836         
837         if (*new_gid == 0) {
838                 struct group *grp = getgrnam(unix_group);
839
840                 if (grp != NULL)
841                         *new_gid = grp->gr_gid;
842         }
843                         
844         return ret;     
845 }
846
847 /****************************************************************************
848  Delete a UNIX group on demand.
849 ****************************************************************************/
850
851 int smb_delete_group(char *unix_group)
852 {
853         pstring del_script;
854         int ret;
855
856         /* defer to scripts */
857         
858         if ( *lp_delgroup_script() ) {
859                 pstrcpy(del_script, lp_delgroup_script());
860                 pstring_sub(del_script, "%g", unix_group);
861                 ret = smbrun(del_script,NULL);
862                 DEBUG(3,("smb_delete_group: Running the command `%s' gave %d\n",del_script,ret));
863                 return ret;
864         }
865
866         if ( winbind_delete_group( unix_group ) ) {
867                 DEBUG(3,("smb_delete_group: winbindd deleted the group (%s)\n",
868                         unix_group));
869                 return 0;
870         }
871                 
872         return -1;
873 }
874
875 /****************************************************************************
876  Set a user's primary UNIX group.
877 ****************************************************************************/
878 int smb_set_primary_group(const char *unix_group, const char* unix_user)
879 {
880         pstring add_script;
881         int ret;
882
883         /* defer to scripts */
884         
885         if ( *lp_setprimarygroup_script() ) {
886                 pstrcpy(add_script, lp_setprimarygroup_script());
887                 all_string_sub(add_script, "%g", unix_group, sizeof(add_script));
888                 all_string_sub(add_script, "%u", unix_user, sizeof(add_script));
889                 ret = smbrun(add_script,NULL);
890                 DEBUG(3,("smb_set_primary_group: "
891                          "Running the command `%s' gave %d\n",add_script,ret));
892                 return ret;
893         }
894
895         /* Try winbindd */
896         
897         if ( winbind_set_user_primary_group( unix_user, unix_group ) ) {
898                 DEBUG(3,("smb_delete_group: winbindd set the group (%s) as the primary group for user (%s)\n",
899                         unix_group, unix_user));
900                 return 0;
901         }               
902         
903         return -1;
904 }
905
906 /****************************************************************************
907  Add a user to a UNIX group.
908 ****************************************************************************/
909
910 int smb_add_user_group(char *unix_group, char *unix_user)
911 {
912         pstring add_script;
913         int ret;
914
915         /* defer to scripts */
916         
917         if ( *lp_addusertogroup_script() ) {
918                 pstrcpy(add_script, lp_addusertogroup_script());
919                 pstring_sub(add_script, "%g", unix_group);
920                 pstring_sub(add_script, "%u", unix_user);
921                 ret = smbrun(add_script,NULL);
922                 DEBUG(3,("smb_add_user_group: Running the command `%s' gave %d\n",add_script,ret));
923                 return ret;
924         }
925         
926         /* Try winbindd */
927
928         if ( winbind_add_user_to_group( unix_user, unix_group ) ) {
929                 DEBUG(3,("smb_delete_group: winbindd added user (%s) to the group (%s)\n",
930                         unix_user, unix_group));
931                 return -1;
932         }       
933         
934         return -1;
935 }
936
937 /****************************************************************************
938  Delete a user from a UNIX group
939 ****************************************************************************/
940
941 int smb_delete_user_group(const char *unix_group, const char *unix_user)
942 {
943         pstring del_script;
944         int ret;
945
946         /* defer to scripts */
947         
948         if ( *lp_deluserfromgroup_script() ) {
949                 pstrcpy(del_script, lp_deluserfromgroup_script());
950                 pstring_sub(del_script, "%g", unix_group);
951                 pstring_sub(del_script, "%u", unix_user);
952                 ret = smbrun(del_script,NULL);
953                 DEBUG(3,("smb_delete_user_group: Running the command `%s' gave %d\n",del_script,ret));
954                 return ret;
955         }
956         
957         /* Try winbindd */
958
959         if ( winbind_remove_user_from_group( unix_user, unix_group ) ) {
960                 DEBUG(3,("smb_delete_group: winbindd removed user (%s) from the group (%s)\n",
961                         unix_user, unix_group));
962                 return 0;
963         }
964         
965         return -1;
966 }
967
968
969 NTSTATUS pdb_default_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
970                                  DOM_SID sid)
971 {
972         return get_group_map_from_sid(sid, map) ?
973                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
974 }
975
976 NTSTATUS pdb_default_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
977                                  gid_t gid)
978 {
979         return get_group_map_from_gid(gid, map) ?
980                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
981 }
982
983 NTSTATUS pdb_default_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
984                                  const char *name)
985 {
986         return get_group_map_from_ntname(name, map) ?
987                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
988 }
989
990 NTSTATUS pdb_default_add_group_mapping_entry(struct pdb_methods *methods,
991                                                 GROUP_MAP *map)
992 {
993         return add_mapping_entry(map, TDB_INSERT) ?
994                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
995 }
996
997 NTSTATUS pdb_default_update_group_mapping_entry(struct pdb_methods *methods,
998                                                    GROUP_MAP *map)
999 {
1000         return add_mapping_entry(map, TDB_REPLACE) ?
1001                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1002 }
1003
1004 NTSTATUS pdb_default_delete_group_mapping_entry(struct pdb_methods *methods,
1005                                                    DOM_SID sid)
1006 {
1007         return group_map_remove(sid) ?
1008                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1009 }
1010
1011 NTSTATUS pdb_default_enum_group_mapping(struct pdb_methods *methods,
1012                                            enum SID_NAME_USE sid_name_use,
1013                                            GROUP_MAP **rmap, int *num_entries,
1014                                            BOOL unix_only)
1015 {
1016         return enum_group_mapping(sid_name_use, rmap, num_entries, unix_only) ?
1017                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1018 }
1019
1020 /**********************************************************************
1021  no ops for passdb backends that don't implement group mapping
1022  *********************************************************************/
1023
1024 NTSTATUS pdb_nop_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
1025                                  DOM_SID sid)
1026 {
1027         return NT_STATUS_UNSUCCESSFUL;
1028 }
1029
1030 NTSTATUS pdb_nop_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
1031                                  gid_t gid)
1032 {
1033         return NT_STATUS_UNSUCCESSFUL;
1034 }
1035
1036 NTSTATUS pdb_nop_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
1037                                  const char *name)
1038 {
1039         return NT_STATUS_UNSUCCESSFUL;
1040 }
1041
1042 NTSTATUS pdb_nop_add_group_mapping_entry(struct pdb_methods *methods,
1043                                                 GROUP_MAP *map)
1044 {
1045         return NT_STATUS_UNSUCCESSFUL;
1046 }
1047
1048 NTSTATUS pdb_nop_update_group_mapping_entry(struct pdb_methods *methods,
1049                                                    GROUP_MAP *map)
1050 {
1051         return NT_STATUS_UNSUCCESSFUL;
1052 }
1053
1054 NTSTATUS pdb_nop_delete_group_mapping_entry(struct pdb_methods *methods,
1055                                                    DOM_SID sid)
1056 {
1057         return NT_STATUS_UNSUCCESSFUL;
1058 }
1059
1060 NTSTATUS pdb_nop_enum_group_mapping(struct pdb_methods *methods,
1061                                            enum SID_NAME_USE sid_name_use,
1062                                            GROUP_MAP **rmap, int *num_entries,
1063                                            BOOL unix_only)
1064 {
1065         return NT_STATUS_UNSUCCESSFUL;
1066 }
1067