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         BOOL ret;
 633
 634         if(!init_group_mapping()) {
 635                 DEBUG(0,("failed to initialize group mapping"));
 636                 return(False);
 637         }
 638
 639         if ( (grp=getgrgid(gid)) == NULL)
 640                 return False;
 641
 642         /*
 643          * make a group map from scratch if doesn't exist.
 644          */
 645
 646         become_root();
 647         ret = pdb_getgrgid(map, gid);
 648         unbecome_root();
 649
 650         if ( !ret ) {
 651                 map->gid=gid;
 652                 map->sid_name_use=SID_NAME_ALIAS;
 653
 654                 /* interim solution until we have a last RID allocated */
 655
 656                 sid_copy(&map->sid, get_global_sam_sid());
 657                 sid_append_rid(&map->sid, pdb_gid_to_group_rid(gid));
 658
 659                 fstrcpy(map->nt_name, grp->gr_name);
 660                 fstrcpy(map->comment, "Local Unix Group");
 661         }
 662
 663         return True;
 664 }
 665
 666
 667
 668
 669 /****************************************************************************
 670  Get the member users of a group and
 671  all the users who have that group as primary.
 672
 673  give back an array of uid
 674  return the grand number of users
 675
 676
 677  TODO: sort the list and remove duplicate. JFM.
 678
 679 ****************************************************************************/
 680
 681 BOOL get_uid_list_of_group(gid_t gid, uid_t **uid, int *num_uids)
 682 {
 683         struct group *grp;
 684         struct passwd *pwd;
 685         int i=0;
 686         char *gr;
 687         uid_t *u;
 688
 689         if(!init_group_mapping()) {
 690                 DEBUG(0,("failed to initialize group mapping"));
 691                 return(False);
 692         }
 693
 694         *num_uids = 0;
 695         *uid=NULL;
 696
 697         if ( (grp=getgrgid(gid)) == NULL)
 698                 return False;
 699
 700         gr = grp->gr_mem[0];
 701         DEBUG(10, ("getting members\n"));
 702
 703         while (gr && (*gr != (char)'\0')) {
 704                 u = Realloc((*uid), sizeof(uid_t)*(*num_uids+1));
 705                 if (!u) {
 706                         DEBUG(0,("get_uid_list_of_group: unable to enlarge uid list!\n"));
 707                         return False;
 708                 }
 709                 else (*uid) = u;
 710
 711                 if( (pwd=getpwnam_alloc(gr)) !=NULL) {
 712                         (*uid)[*num_uids]=pwd->pw_uid;
 713                         (*num_uids)++;
 714                         passwd_free(&pwd);
 715                 }
 716                 gr = grp->gr_mem[++i];
 717         }
 718         DEBUG(10, ("got [%d] members\n", *num_uids));
 719
 720         setpwent();
 721         while ((pwd=getpwent()) != NULL) {
 722                 if (pwd->pw_gid==gid) {
 723                         u = Realloc((*uid), sizeof(uid_t)*(*num_uids+1));
 724                         if (!u) {
 725                                 DEBUG(0,("get_uid_list_of_group: unable to enlarge uid list!\n"));
 726                                 return False;
 727                         }
 728                         else (*uid) = u;
 729                         (*uid)[*num_uids]=pwd->pw_uid;
 730
 731                         (*num_uids)++;
 732                 }
 733         }
 734         endpwent();
 735         DEBUG(10, ("got primary groups, members: [%d]\n", *num_uids));
 736
 737         return True;
 738 }
 739
 740 /****************************************************************************
 741  Create a UNIX group on demand.
 742 ****************************************************************************/
 743
 744 int smb_create_group(char *unix_group, gid_t *new_gid)
 745 {
 746         pstring add_script;
 747         int     ret = -1;
 748         int     fd = 0;
 749
 750         *new_gid = 0;
 751
 752         /* defer to scripts */
 753
 754         if ( *lp_addgroup_script() ) {
 755                 pstrcpy(add_script, lp_addgroup_script());
 756                 pstring_sub(add_script, "%g", unix_group);
 757                 ret = smbrun(add_script, (new_gid!=NULL) ? &fd : NULL);
 758                 DEBUG(3,("smb_create_group: Running the command `%s' gave %d\n",add_script,ret));
 759                 if (ret != 0)
 760                         return ret;
 761
 762                 if (fd != 0) {
 763                         fstring output;
 764
 765                         *new_gid = 0;
 766                         if (read(fd, output, sizeof(output)) > 0) {
 767                                 *new_gid = (gid_t)strtoul(output, NULL, 10);
 768                         }
 769
 770                         close(fd);
 771                 }
 772         }
 773
 774         /* Try winbindd */
 775
 776         if ( winbind_create_group( unix_group, NULL ) ) {
 777                 DEBUG(3,("smb_create_group: winbindd created the group (%s)\n",
 778                         unix_group));
 779                 ret = 0;
 780         }
 781
 782         if (*new_gid == 0) {
 783                 struct group *grp = getgrnam(unix_group);
 784
 785                 if (grp != NULL)
 786                         *new_gid = grp->gr_gid;
 787         }
 788
 789         return ret;
 790 }
 791
 792 /****************************************************************************
 793  Delete a UNIX group on demand.
 794 ****************************************************************************/
 795
 796 int smb_delete_group(char *unix_group)
 797 {
 798         pstring del_script;
 799         int ret;
 800
 801         /* defer to scripts */
 802
 803         if ( *lp_delgroup_script() ) {
 804                 pstrcpy(del_script, lp_delgroup_script());
 805                 pstring_sub(del_script, "%g", unix_group);
 806                 ret = smbrun(del_script,NULL);
 807                 DEBUG(3,("smb_delete_group: Running the command `%s' gave %d\n",del_script,ret));
 808                 return ret;
 809         }
 810
 811         if ( winbind_delete_group( unix_group ) ) {
 812                 DEBUG(3,("smb_delete_group: winbindd deleted the group (%s)\n",
 813                         unix_group));
 814                 return 0;
 815         }
 816
 817         return -1;
 818 }
 819
 820 /****************************************************************************
 821  Set a user's primary UNIX group.
 822 ****************************************************************************/
 823 int smb_set_primary_group(const char *unix_group, const char* unix_user)
 824 {
 825         pstring add_script;
 826         int ret;
 827
 828         /* defer to scripts */
 829
 830         if ( *lp_setprimarygroup_script() ) {
 831                 pstrcpy(add_script, lp_setprimarygroup_script());
 832                 all_string_sub(add_script, "%g", unix_group, sizeof(add_script));
 833                 all_string_sub(add_script, "%u", unix_user, sizeof(add_script));
 834                 ret = smbrun(add_script,NULL);
 835                 DEBUG(3,("smb_set_primary_group: "
 836                          "Running the command `%s' gave %d\n",add_script,ret));
 837                 return ret;
 838         }
 839
 840         /* Try winbindd */
 841
 842         if ( winbind_set_user_primary_group( unix_user, unix_group ) ) {
 843                 DEBUG(3,("smb_delete_group: winbindd set the group (%s) as the primary group for user (%s)\n",
 844                         unix_group, unix_user));
 845                 return 0;
 846         }
 847
 848         return -1;
 849 }
 850
 851 /****************************************************************************
 852  Add a user to a UNIX group.
 853 ****************************************************************************/
 854
 855 int smb_add_user_group(char *unix_group, char *unix_user)
 856 {
 857         pstring add_script;
 858         int ret;
 859
 860         /* defer to scripts */
 861
 862         if ( *lp_addusertogroup_script() ) {
 863                 pstrcpy(add_script, lp_addusertogroup_script());
 864                 pstring_sub(add_script, "%g", unix_group);
 865                 pstring_sub(add_script, "%u", unix_user);
 866                 ret = smbrun(add_script,NULL);
 867                 DEBUG(3,("smb_add_user_group: Running the command `%s' gave %d\n",add_script,ret));
 868                 return ret;
 869         }
 870
 871         /* Try winbindd */
 872
 873         if ( winbind_add_user_to_group( unix_user, unix_group ) ) {
 874                 DEBUG(3,("smb_delete_group: winbindd added user (%s) to the group (%s)\n",
 875                         unix_user, unix_group));
 876                 return -1;
 877         }
 878
 879         return -1;
 880 }
 881
 882 /****************************************************************************
 883  Delete a user from a UNIX group
 884 ****************************************************************************/
 885
 886 int smb_delete_user_group(const char *unix_group, const char *unix_user)
 887 {
 888         pstring del_script;
 889         int ret;
 890
 891         /* defer to scripts */
 892
 893         if ( *lp_deluserfromgroup_script() ) {
 894                 pstrcpy(del_script, lp_deluserfromgroup_script());
 895                 pstring_sub(del_script, "%g", unix_group);
 896                 pstring_sub(del_script, "%u", unix_user);
 897                 ret = smbrun(del_script,NULL);
 898                 DEBUG(3,("smb_delete_user_group: Running the command `%s' gave %d\n",del_script,ret));
 899                 return ret;
 900         }
 901
 902         /* Try winbindd */
 903
 904         if ( winbind_remove_user_from_group( unix_user, unix_group ) ) {
 905                 DEBUG(3,("smb_delete_group: winbindd removed user (%s) from the group (%s)\n",
 906                         unix_user, unix_group));
 907                 return 0;
 908         }
 909
 910         return -1;
 911 }
 912
 913
 914 NTSTATUS pdb_default_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
 915                                  DOM_SID sid)
 916 {
 917         return get_group_map_from_sid(sid, map) ?
 918                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 919 }
 920
 921 NTSTATUS pdb_default_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
 922                                  gid_t gid)
 923 {
 924         return get_group_map_from_gid(gid, map) ?
 925                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 926 }
 927
 928 NTSTATUS pdb_default_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
 929                                  const char *name)
 930 {
 931         return get_group_map_from_ntname(name, map) ?
 932                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 933 }
 934
 935 NTSTATUS pdb_default_add_group_mapping_entry(struct pdb_methods *methods,
 936                                                 GROUP_MAP *map)
 937 {
 938         return add_mapping_entry(map, TDB_INSERT) ?
 939                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 940 }
 941
 942 NTSTATUS pdb_default_update_group_mapping_entry(struct pdb_methods *methods,
 943                                                    GROUP_MAP *map)
 944 {
 945         return add_mapping_entry(map, TDB_REPLACE) ?
 946                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 947 }
 948
 949 NTSTATUS pdb_default_delete_group_mapping_entry(struct pdb_methods *methods,
 950                                                    DOM_SID sid)
 951 {
 952         return group_map_remove(sid) ?
 953                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 954 }
 955
 956 NTSTATUS pdb_default_enum_group_mapping(struct pdb_methods *methods,
 957                                            enum SID_NAME_USE sid_name_use,
 958                                            GROUP_MAP **rmap, int *num_entries,
 959                                            BOOL unix_only)
 960 {
 961         return enum_group_mapping(sid_name_use, rmap, num_entries, unix_only) ?
 962                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 963 }
 964
 965 /**********************************************************************
 966  no ops for passdb backends that don't implement group mapping
 967  *********************************************************************/
 968
 969 NTSTATUS pdb_nop_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
 970                                  DOM_SID sid)
 971 {
 972         return NT_STATUS_UNSUCCESSFUL;
 973 }
 974
 975 NTSTATUS pdb_nop_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
 976                                  gid_t gid)
 977 {
 978         return NT_STATUS_UNSUCCESSFUL;
 979 }
 980
 981 NTSTATUS pdb_nop_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
 982                                  const char *name)
 983 {
 984         return NT_STATUS_UNSUCCESSFUL;
 985 }
 986
 987 NTSTATUS pdb_nop_add_group_mapping_entry(struct pdb_methods *methods,
 988                                                 GROUP_MAP *map)
 989 {
 990         return NT_STATUS_UNSUCCESSFUL;
 991 }
 992
 993 NTSTATUS pdb_nop_update_group_mapping_entry(struct pdb_methods *methods,
 994                                                    GROUP_MAP *map)
 995 {
 996         return NT_STATUS_UNSUCCESSFUL;
 997 }
 998
 999 NTSTATUS pdb_nop_delete_group_mapping_entry(struct pdb_methods *methods,
1000                                                    DOM_SID sid)
1001 {
1002         return NT_STATUS_UNSUCCESSFUL;
1003 }
1004
1005 NTSTATUS pdb_nop_enum_group_mapping(struct pdb_methods *methods,
1006                                            enum SID_NAME_USE sid_name_use,
1007                                            GROUP_MAP **rmap, int *num_entries,
1008                                            BOOL unix_only)
1009 {
1010         return NT_STATUS_UNSUCCESSFUL;
1011 }
1012