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 François 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
 508         if(!init_group_mapping()) {
 509                 DEBUG(0,("failed to initialize group mapping"));
 510                 return(False);
 511         }
 512
 513         DEBUG(10, ("get_domain_group_from_sid\n"));
 514
 515         /* if the group is NOT in the database, it CAN NOT be a domain group */
 516         if(!pdb_getgrsid(map, sid))
 517                 return False;
 518
 519         DEBUG(10, ("get_domain_group_from_sid: SID found in the TDB\n"));
 520
 521         /* if it's not a domain group, continue */
 522         if (map->sid_name_use!=SID_NAME_DOM_GRP) {
 523                 return False;
 524         }
 525
 526         DEBUG(10, ("get_domain_group_from_sid: SID is a domain group\n"));
 527
 528         if (map->gid==-1) {
 529                 return False;
 530         }
 531
 532         DEBUG(10, ("get_domain_group_from_sid: SID is mapped to gid:%lu\n",(unsigned long)map->gid));
 533
 534         grp = getgrgid(map->gid)
 535         if ( !grp ) {
 536                 DEBUG(10, ("get_domain_group_from_sid: gid DOESN'T exist in UNIX security\n"));
 537                 return False;
 538         }
 539
 540         DEBUG(10, ("get_domain_group_from_sid: gid exists in UNIX security\n"));
 541
 542         return True;
 543 }
 544
 545
 546 /* get a local (alias) group from it's SID */
 547
 548 BOOL get_local_group_from_sid(DOM_SID sid, GROUP_MAP *map)
 549 {
 550         struct group *grp;
 551
 552         if(!init_group_mapping()) {
 553                 DEBUG(0,("failed to initialize group mapping"));
 554                 return(False);
 555         }
 556
 557         /* The group is in the mapping table */
 558         if(pdb_getgrsid(map, sid)) {
 559                 if (map->sid_name_use!=SID_NAME_ALIAS) {
 560                         return False;
 561                 }
 562
 563                 if (map->gid==-1) {
 564                         return False;
 565                 }
 566
 567                 if ( (grp=getgrgid(map->gid)) == NULL) {
 568                         return False;
 569                 }
 570         } else {
 571                 /* the group isn't in the mapping table.
 572                  * make one based on the unix information */
 573                 uint32 alias_rid;
 574
 575                 sid_peek_rid(&sid, &alias_rid);
 576                 map->gid=pdb_group_rid_to_gid(alias_rid);
 577
 578                 grp = getgrgid(map->gid);
 579                 if ( !grp ) {
 580                         DEBUG(3,("get_local_group_from_sid: No unix group for [%ul]\n", map->gid));
 581                         return False;
 582                 }
 583
 584                 map->sid_name_use=SID_NAME_ALIAS;
 585
 586                 fstrcpy(map->nt_name, grp->gr_name);
 587                 fstrcpy(map->comment, "Local Unix Group");
 588
 589                 sid_copy(&map->sid, &sid);
 590         }
 591
 592         return True;
 593 }
 594
 595 /* get a builtin group from it's SID */
 596
 597 BOOL get_builtin_group_from_sid(DOM_SID sid, GROUP_MAP *map)
 598 {
 599         struct group *grp;
 600
 601         if(!init_group_mapping()) {
 602                 DEBUG(0,("failed to initialize group mapping"));
 603                 return(False);
 604         }
 605
 606         if(!pdb_getgrsid(map, sid))
 607                 return False;
 608
 609         if (map->sid_name_use!=SID_NAME_WKN_GRP) {
 610                 return False;
 611         }
 612
 613         if (map->gid==-1) {
 614                 return False;
 615         }
 616
 617         if ( (grp=getgrgid(map->gid)) == NULL) {
 618                 return False;
 619         }
 620
 621         return True;
 622 }
 623
 624
 625
 626 /****************************************************************************
 627 Returns a GROUP_MAP struct based on the gid.
 628 ****************************************************************************/
 629 BOOL get_group_from_gid(gid_t gid, GROUP_MAP *map)
 630 {
 631         struct group *grp;
 632
 633         if(!init_group_mapping()) {
 634                 DEBUG(0,("failed to initialize group mapping"));
 635                 return(False);
 636         }
 637
 638         if ( (grp=getgrgid(gid)) == NULL)
 639                 return False;
 640
 641         /*
 642          * make a group map from scratch if doesn't exist.
 643          */
 644         if (!pdb_getgrgid(map, gid)) {
 645                 map->gid=gid;
 646                 map->sid_name_use=SID_NAME_ALIAS;
 647
 648                 /* interim solution until we have a last RID allocated */
 649
 650                 sid_copy(&map->sid, get_global_sam_sid());
 651                 sid_append_rid(&map->sid, pdb_gid_to_group_rid(gid));
 652
 653                 fstrcpy(map->nt_name, grp->gr_name);
 654                 fstrcpy(map->comment, "Local Unix Group");
 655         }
 656
 657         return True;
 658 }
 659
 660
 661
 662
 663 /****************************************************************************
 664  Get the member users of a group and
 665  all the users who have that group as primary.
 666
 667  give back an array of uid
 668  return the grand number of users
 669
 670
 671  TODO: sort the list and remove duplicate. JFM.
 672
 673 ****************************************************************************/
 674
 675 BOOL get_uid_list_of_group(gid_t gid, uid_t **uid, int *num_uids)
 676 {
 677         struct group *grp;
 678         struct passwd *pwd;
 679         int i=0;
 680         char *gr;
 681         uid_t *u;
 682
 683         if(!init_group_mapping()) {
 684                 DEBUG(0,("failed to initialize group mapping"));
 685                 return(False);
 686         }
 687
 688         *num_uids = 0;
 689         *uid=NULL;
 690
 691         if ( (grp=getgrgid(gid)) == NULL)
 692                 return False;
 693
 694         gr = grp->gr_mem[0];
 695         DEBUG(10, ("getting members\n"));
 696
 697         while (gr && (*gr != (char)'\0')) {
 698                 u = Realloc((*uid), sizeof(uid_t)*(*num_uids+1));
 699                 if (!u) {
 700                         DEBUG(0,("get_uid_list_of_group: unable to enlarge uid list!\n"));
 701                         return False;
 702                 }
 703                 else (*uid) = u;
 704
 705                 if( (pwd=getpwnam_alloc(gr)) !=NULL) {
 706                         (*uid)[*num_uids]=pwd->pw_uid;
 707                         (*num_uids)++;
 708                         passwd_free(&pwd);
 709                 }
 710                 gr = grp->gr_mem[++i];
 711         }
 712         DEBUG(10, ("got [%d] members\n", *num_uids));
 713
 714         setpwent();
 715         while ((pwd=getpwent()) != NULL) {
 716                 if (pwd->pw_gid==gid) {
 717                         u = Realloc((*uid), sizeof(uid_t)*(*num_uids+1));
 718                         if (!u) {
 719                                 DEBUG(0,("get_uid_list_of_group: unable to enlarge uid list!\n"));
 720                                 return False;
 721                         }
 722                         else (*uid) = u;
 723                         (*uid)[*num_uids]=pwd->pw_uid;
 724
 725                         (*num_uids)++;
 726                 }
 727         }
 728         endpwent();
 729         DEBUG(10, ("got primary groups, members: [%d]\n", *num_uids));
 730
 731         return True;
 732 }
 733
 734 /****************************************************************************
 735  Create a UNIX group on demand.
 736 ****************************************************************************/
 737
 738 int smb_create_group(char *unix_group, gid_t *new_gid)
 739 {
 740         pstring add_script;
 741         int     ret = -1;
 742         int     fd = 0;
 743
 744         *new_gid = 0;
 745
 746         /* defer to scripts */
 747
 748         if ( *lp_addgroup_script() ) {
 749                 pstrcpy(add_script, lp_addgroup_script());
 750                 pstring_sub(add_script, "%g", unix_group);
 751                 ret = smbrun(add_script, (new_gid!=NULL) ? &fd : NULL);
 752                 DEBUG(3,("smb_create_group: Running the command `%s' gave %d\n",add_script,ret));
 753                 if (ret != 0)
 754                         return ret;
 755
 756                 if (fd != 0) {
 757                         fstring output;
 758
 759                         *new_gid = 0;
 760                         if (read(fd, output, sizeof(output)) > 0) {
 761                                 *new_gid = (gid_t)strtoul(output, NULL, 10);
 762                         }
 763
 764                         close(fd);
 765                 }
 766         }
 767
 768         /* Try winbindd */
 769
 770         if ( winbind_create_group( unix_group, NULL ) ) {
 771                 DEBUG(3,("smb_create_group: winbindd created the group (%s)\n",
 772                         unix_group));
 773                 ret = 0;
 774         }
 775
 776         if (*new_gid == 0) {
 777                 struct group *grp = getgrnam(unix_group);
 778
 779                 if (grp != NULL)
 780                         *new_gid = grp->gr_gid;
 781         }
 782
 783         return ret;
 784 }
 785
 786 /****************************************************************************
 787  Delete a UNIX group on demand.
 788 ****************************************************************************/
 789
 790 int smb_delete_group(char *unix_group)
 791 {
 792         pstring del_script;
 793         int ret;
 794
 795         /* defer to scripts */
 796
 797         if ( *lp_delgroup_script() ) {
 798                 pstrcpy(del_script, lp_delgroup_script());
 799                 pstring_sub(del_script, "%g", unix_group);
 800                 ret = smbrun(del_script,NULL);
 801                 DEBUG(3,("smb_delete_group: Running the command `%s' gave %d\n",del_script,ret));
 802                 return ret;
 803         }
 804
 805         if ( winbind_delete_group( unix_group ) ) {
 806                 DEBUG(3,("smb_delete_group: winbindd deleted the group (%s)\n",
 807                         unix_group));
 808                 return 0;
 809         }
 810
 811         return -1;
 812 }
 813
 814 /****************************************************************************
 815  Set a user's primary UNIX group.
 816 ****************************************************************************/
 817 int smb_set_primary_group(const char *unix_group, const char* unix_user)
 818 {
 819         pstring add_script;
 820         int ret;
 821
 822         /* defer to scripts */
 823
 824         if ( *lp_setprimarygroup_script() ) {
 825                 pstrcpy(add_script, lp_setprimarygroup_script());
 826                 all_string_sub(add_script, "%g", unix_group, sizeof(add_script));
 827                 all_string_sub(add_script, "%u", unix_user, sizeof(add_script));
 828                 ret = smbrun(add_script,NULL);
 829                 DEBUG(3,("smb_set_primary_group: "
 830                          "Running the command `%s' gave %d\n",add_script,ret));
 831                 return ret;
 832         }
 833
 834         /* Try winbindd */
 835
 836         if ( winbind_set_user_primary_group( unix_user, unix_group ) ) {
 837                 DEBUG(3,("smb_delete_group: winbindd set the group (%s) as the primary group for user (%s)\n",
 838                         unix_group, unix_user));
 839                 return 0;
 840         }
 841
 842         return -1;
 843 }
 844
 845 /****************************************************************************
 846  Add a user to a UNIX group.
 847 ****************************************************************************/
 848
 849 int smb_add_user_group(char *unix_group, char *unix_user)
 850 {
 851         pstring add_script;
 852         int ret;
 853
 854         /* defer to scripts */
 855
 856         if ( *lp_addusertogroup_script() ) {
 857                 pstrcpy(add_script, lp_addusertogroup_script());
 858                 pstring_sub(add_script, "%g", unix_group);
 859                 pstring_sub(add_script, "%u", unix_user);
 860                 ret = smbrun(add_script,NULL);
 861                 DEBUG(3,("smb_add_user_group: Running the command `%s' gave %d\n",add_script,ret));
 862                 return ret;
 863         }
 864
 865         /* Try winbindd */
 866
 867         if ( winbind_add_user_to_group( unix_user, unix_group ) ) {
 868                 DEBUG(3,("smb_delete_group: winbindd added user (%s) to the group (%s)\n",
 869                         unix_user, unix_group));
 870                 return -1;
 871         }
 872
 873         return -1;
 874 }
 875
 876 /****************************************************************************
 877  Delete a user from a UNIX group
 878 ****************************************************************************/
 879
 880 int smb_delete_user_group(const char *unix_group, const char *unix_user)
 881 {
 882         pstring del_script;
 883         int ret;
 884
 885         /* defer to scripts */
 886
 887         if ( *lp_deluserfromgroup_script() ) {
 888                 pstrcpy(del_script, lp_deluserfromgroup_script());
 889                 pstring_sub(del_script, "%g", unix_group);
 890                 pstring_sub(del_script, "%u", unix_user);
 891                 ret = smbrun(del_script,NULL);
 892                 DEBUG(3,("smb_delete_user_group: Running the command `%s' gave %d\n",del_script,ret));
 893                 return ret;
 894         }
 895
 896         /* Try winbindd */
 897
 898         if ( winbind_remove_user_from_group( unix_user, unix_group ) ) {
 899                 DEBUG(3,("smb_delete_group: winbindd removed user (%s) from the group (%s)\n",
 900                         unix_user, unix_group));
 901                 return 0;
 902         }
 903
 904         return -1;
 905 }
 906
 907
 908 NTSTATUS pdb_default_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
 909                                  DOM_SID sid)
 910 {
 911         return get_group_map_from_sid(sid, map) ?
 912                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 913 }
 914
 915 NTSTATUS pdb_default_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
 916                                  gid_t gid)
 917 {
 918         return get_group_map_from_gid(gid, map) ?
 919                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 920 }
 921
 922 NTSTATUS pdb_default_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
 923                                  const char *name)
 924 {
 925         return get_group_map_from_ntname(name, map) ?
 926                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 927 }
 928
 929 NTSTATUS pdb_default_add_group_mapping_entry(struct pdb_methods *methods,
 930                                                 GROUP_MAP *map)
 931 {
 932         return add_mapping_entry(map, TDB_INSERT) ?
 933                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 934 }
 935
 936 NTSTATUS pdb_default_update_group_mapping_entry(struct pdb_methods *methods,
 937                                                    GROUP_MAP *map)
 938 {
 939         return add_mapping_entry(map, TDB_REPLACE) ?
 940                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 941 }
 942
 943 NTSTATUS pdb_default_delete_group_mapping_entry(struct pdb_methods *methods,
 944                                                    DOM_SID sid)
 945 {
 946         return group_map_remove(sid) ?
 947                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 948 }
 949
 950 NTSTATUS pdb_default_enum_group_mapping(struct pdb_methods *methods,
 951                                            enum SID_NAME_USE sid_name_use,
 952                                            GROUP_MAP **rmap, int *num_entries,
 953                                            BOOL unix_only)
 954 {
 955         return enum_group_mapping(sid_name_use, rmap, num_entries, unix_only) ?
 956                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 957 }
 958
 959 /**********************************************************************
 960  no ops for passdb backends that don't implement group mapping
 961  *********************************************************************/
 962
 963 NTSTATUS pdb_nop_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
 964                                  DOM_SID sid)
 965 {
 966         return NT_STATUS_UNSUCCESSFUL;
 967 }
 968
 969 NTSTATUS pdb_nop_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
 970                                  gid_t gid)
 971 {
 972         return NT_STATUS_UNSUCCESSFUL;
 973 }
 974
 975 NTSTATUS pdb_nop_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
 976                                  const char *name)
 977 {
 978         return NT_STATUS_UNSUCCESSFUL;
 979 }
 980
 981 NTSTATUS pdb_nop_add_group_mapping_entry(struct pdb_methods *methods,
 982                                                 GROUP_MAP *map)
 983 {
 984         return NT_STATUS_UNSUCCESSFUL;
 985 }
 986
 987 NTSTATUS pdb_nop_update_group_mapping_entry(struct pdb_methods *methods,
 988                                                    GROUP_MAP *map)
 989 {
 990         return NT_STATUS_UNSUCCESSFUL;
 991 }
 992
 993 NTSTATUS pdb_nop_delete_group_mapping_entry(struct pdb_methods *methods,
 994                                                    DOM_SID sid)
 995 {
 996         return NT_STATUS_UNSUCCESSFUL;
 997 }
 998
 999 NTSTATUS pdb_nop_enum_group_mapping(struct pdb_methods *methods,
1000                                            enum SID_NAME_USE sid_name_use,
1001                                            GROUP_MAP **rmap, int *num_entries,
1002                                            BOOL unix_only)
1003 {
1004         return NT_STATUS_UNSUCCESSFUL;
1005 }
1006