source/passdb/pdb_interface.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Password and authentication handling
   4    Copyright (C) Andrew Bartlett                        2002
   5    Copyright (C) Jelmer Vernooij                        2002
   6    Copyright (C) Simo Sorce                             2003
   7    Copyright (C) Volker Lendecke                        2006
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_PASSDB
  28
  29 /* Cache of latest SAM lookup query */
  30
  31 static struct samu *csamuser = NULL;
  32
  33 static_decl_pdb;
  34
  35 static struct pdb_init_function_entry *backends = NULL;
  36
  37 static void lazy_initialize_passdb(void)
  38 {
  39         static BOOL initialized = False;
  40         if(initialized) {
  41                 return;
  42         }
  43         static_init_pdb;
  44         initialized = True;
  45 }
  46
  47 static BOOL lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
  48                                   const char **name,
  49                                   enum lsa_SidType *psid_name_use,
  50                                   union unid_t *unix_id);
  51
  52 NTSTATUS smb_register_passdb(int version, const char *name, pdb_init_function init)
  53 {
  54         struct pdb_init_function_entry *entry = backends;
  55
  56         if(version != PASSDB_INTERFACE_VERSION) {
  57                 DEBUG(0,("Can't register passdb backend!\n"
  58                          "You tried to register a passdb module with PASSDB_INTERFACE_VERSION %d, "
  59                          "while this version of samba uses version %d\n",
  60                          version,PASSDB_INTERFACE_VERSION));
  61                 return NT_STATUS_OBJECT_TYPE_MISMATCH;
  62         }
  63
  64         if (!name || !init) {
  65                 return NT_STATUS_INVALID_PARAMETER;
  66         }
  67
  68         DEBUG(5,("Attempting to register passdb backend %s\n", name));
  69
  70         /* Check for duplicates */
  71         if (pdb_find_backend_entry(name)) {
  72                 DEBUG(0,("There already is a passdb backend registered with the name %s!\n", name));
  73                 return NT_STATUS_OBJECT_NAME_COLLISION;
  74         }
  75
  76         entry = SMB_XMALLOC_P(struct pdb_init_function_entry);
  77         entry->name = smb_xstrdup(name);
  78         entry->init = init;
  79
  80         DLIST_ADD(backends, entry);
  81         DEBUG(5,("Successfully added passdb backend '%s'\n", name));
  82         return NT_STATUS_OK;
  83 }
  84
  85 struct pdb_init_function_entry *pdb_find_backend_entry(const char *name)
  86 {
  87         struct pdb_init_function_entry *entry = backends;
  88
  89         while(entry) {
  90                 if (strcmp(entry->name, name)==0) return entry;
  91                 entry = entry->next;
  92         }
  93
  94         return NULL;
  95 }
  96
  97 /******************************************************************
  98   Make a pdb_methods from scratch
  99  *******************************************************************/
 100
 101 NTSTATUS make_pdb_method_name(struct pdb_methods **methods, const char *selected)
 102 {
 103         char *module_name = smb_xstrdup(selected);
 104         char *module_location = NULL, *p;
 105         struct pdb_init_function_entry *entry;
 106         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 107
 108         lazy_initialize_passdb();
 109
 110         p = strchr(module_name, ':');
 111
 112         if (p) {
 113                 *p = 0;
 114                 module_location = p+1;
 115                 trim_char(module_location, ' ', ' ');
 116         }
 117
 118         trim_char(module_name, ' ', ' ');
 119
 120
 121         DEBUG(5,("Attempting to find an passdb backend to match %s (%s)\n", selected, module_name));
 122
 123         entry = pdb_find_backend_entry(module_name);
 124
 125         /* Try to find a module that contains this module */
 126         if (!entry) {
 127                 DEBUG(2,("No builtin backend found, trying to load plugin\n"));
 128                 if(NT_STATUS_IS_OK(smb_probe_module("pdb", module_name)) && !(entry = pdb_find_backend_entry(module_name))) {
 129                         DEBUG(0,("Plugin is available, but doesn't register passdb backend %s\n", module_name));
 130                         SAFE_FREE(module_name);
 131                         return NT_STATUS_UNSUCCESSFUL;
 132                 }
 133         }
 134
 135         /* No such backend found */
 136         if(!entry) {
 137                 DEBUG(0,("No builtin nor plugin backend for %s found\n", module_name));
 138                 SAFE_FREE(module_name);
 139                 return NT_STATUS_INVALID_PARAMETER;
 140         }
 141
 142         DEBUG(5,("Found pdb backend %s\n", module_name));
 143
 144         if ( !NT_STATUS_IS_OK( nt_status = entry->init(methods, module_location) ) ) {
 145                 DEBUG(0,("pdb backend %s did not correctly init (error was %s)\n",
 146                         selected, nt_errstr(nt_status)));
 147                 SAFE_FREE(module_name);
 148                 return nt_status;
 149         }
 150
 151         SAFE_FREE(module_name);
 152
 153         DEBUG(5,("pdb backend %s has a valid init\n", selected));
 154
 155         return nt_status;
 156 }
 157
 158 /******************************************************************
 159  Return an already initialised pdn_methods structure
 160 *******************************************************************/
 161
 162 static struct pdb_methods *pdb_get_methods_reload( BOOL reload )
 163 {
 164         static struct pdb_methods *pdb = NULL;
 165
 166         if ( pdb && reload ) {
 167                 pdb->free_private_data( &(pdb->private_data) );
 168                 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
 169                         pstring msg;
 170                         slprintf(msg, sizeof(msg)-1, "pdb_get_methods_reload: failed to get pdb methods for backend %s\n",
 171                                 lp_passdb_backend() );
 172                         smb_panic(msg);
 173                 }
 174         }
 175
 176         if ( !pdb ) {
 177                 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
 178                         pstring msg;
 179                         slprintf(msg, sizeof(msg)-1, "pdb_get_methods_reload: failed to get pdb methods for backend %s\n",
 180                                 lp_passdb_backend() );
 181                         smb_panic(msg);
 182                 }
 183         }
 184
 185         return pdb;
 186 }
 187
 188 static struct pdb_methods *pdb_get_methods(void)
 189 {
 190         return pdb_get_methods_reload(False);
 191 }
 192
 193 /******************************************************************
 194  Backward compatibility functions for the original passdb interface
 195 *******************************************************************/
 196
 197 BOOL pdb_setsampwent(BOOL update, uint16 acb_mask)
 198 {
 199         struct pdb_methods *pdb = pdb_get_methods();
 200         return NT_STATUS_IS_OK(pdb->setsampwent(pdb, update, acb_mask));
 201 }
 202
 203 void pdb_endsampwent(void)
 204 {
 205         struct pdb_methods *pdb = pdb_get_methods();
 206         pdb->endsampwent(pdb);
 207 }
 208
 209 BOOL pdb_getsampwent(struct samu *user)
 210 {
 211         struct pdb_methods *pdb = pdb_get_methods();
 212
 213         if ( !NT_STATUS_IS_OK(pdb->getsampwent(pdb, user) ) ) {
 214                 return False;
 215         }
 216
 217         return True;
 218 }
 219
 220 BOOL pdb_getsampwnam(struct samu *sam_acct, const char *username)
 221 {
 222         struct pdb_methods *pdb = pdb_get_methods();
 223
 224         if (!NT_STATUS_IS_OK(pdb->getsampwnam(pdb, sam_acct, username))) {
 225                 return False;
 226         }
 227
 228         if ( csamuser ) {
 229                 TALLOC_FREE(csamuser);
 230         }
 231
 232         csamuser = samu_new( NULL );
 233         if (!csamuser) {
 234                 return False;
 235         }
 236
 237         if (!pdb_copy_sam_account(csamuser, sam_acct)) {
 238                 TALLOC_FREE(csamuser);
 239                 return False;
 240         }
 241
 242         return True;
 243 }
 244
 245 /**********************************************************************
 246 **********************************************************************/
 247
 248 BOOL guest_user_info( struct samu *user )
 249 {
 250         struct passwd *pwd;
 251         NTSTATUS result;
 252         const char *guestname = lp_guestaccount();
 253
 254         if ( !(pwd = getpwnam_alloc( NULL, guestname ) ) ) {
 255                 DEBUG(0,("guest_user_info: Unable to locate guest account [%s]!\n",
 256                         guestname));
 257                 return False;
 258         }
 259
 260         result = samu_set_unix(user, pwd );
 261
 262         TALLOC_FREE( pwd );
 263
 264         return NT_STATUS_IS_OK( result );
 265 }
 266
 267 /**********************************************************************
 268 **********************************************************************/
 269
 270 BOOL pdb_getsampwsid(struct samu *sam_acct, const DOM_SID *sid)
 271 {
 272         struct pdb_methods *pdb = pdb_get_methods();
 273         uint32 rid;
 274
 275         /* hard code the Guest RID of 501 */
 276
 277         if ( !sid_peek_check_rid( get_global_sam_sid(), sid, &rid ) )
 278                 return False;
 279
 280         if ( rid == DOMAIN_USER_RID_GUEST ) {
 281                 DEBUG(6,("pdb_getsampwsid: Building guest account\n"));
 282                 return guest_user_info( sam_acct );
 283         }
 284
 285         /* check the cache first */
 286
 287         if ( csamuser && sid_equal(sid, pdb_get_user_sid(csamuser) ) )
 288                 return pdb_copy_sam_account(sam_acct, csamuser);
 289
 290         return NT_STATUS_IS_OK(pdb->getsampwsid(pdb, sam_acct, sid));
 291 }
 292
 293 static NTSTATUS pdb_default_create_user(struct pdb_methods *methods,
 294                                         TALLOC_CTX *tmp_ctx, const char *name,
 295                                         uint32 acb_info, uint32 *rid)
 296 {
 297         struct samu *sam_pass;
 298         NTSTATUS status;
 299         struct passwd *pwd;
 300
 301         if ((sam_pass = samu_new(tmp_ctx)) == NULL) {
 302                 return NT_STATUS_NO_MEMORY;
 303         }
 304
 305         if ( !(pwd = Get_Pwnam_alloc(tmp_ctx, name)) ) {
 306                 pstring add_script;
 307                 int add_ret;
 308                 fstring name2;
 309
 310                 if ((acb_info & ACB_NORMAL) && name[strlen(name)-1] != '$') {
 311                         pstrcpy(add_script, lp_adduser_script());
 312                 } else {
 313                         pstrcpy(add_script, lp_addmachine_script());
 314                 }
 315
 316                 if (add_script[0] == '\0') {
 317                         DEBUG(3, ("Could not find user %s and no add script "
 318                                   "defined\n", name));
 319                         return NT_STATUS_NO_SUCH_USER;
 320                 }
 321
 322                 /* lowercase the username before creating the Unix account for
 323                    compatibility with previous Samba releases */
 324                 fstrcpy( name2, name );
 325                 strlower_m( name2 );
 326                 all_string_sub(add_script, "%u", name2, sizeof(add_script));
 327                 add_ret = smbrun(add_script,NULL);
 328                 DEBUG(add_ret ? 0 : 3, ("_samr_create_user: Running the command `%s' gave %d\n",
 329                                         add_script, add_ret));
 330                 if (add_ret == 0) {
 331                         smb_nscd_flush_user_cache();
 332                 }
 333
 334 #ifdef ENABLE_BUILD_FARM_HACKS
 335                 if (add_ret != 0) {
 336                         DEBUG(1, ("Creating a faked user %s for build farm "
 337                                   "purposes\n", name));
 338                         faked_create_user(name);
 339                 }
 340 #endif
 341
 342                 flush_pwnam_cache();
 343
 344                 pwd = Get_Pwnam_alloc(tmp_ctx, name);
 345         }
 346
 347         /* we have a valid SID coming out of this call */
 348
 349         status = samu_alloc_rid_unix( sam_pass, pwd );
 350
 351         TALLOC_FREE( pwd );
 352
 353         if (!NT_STATUS_IS_OK(status)) {
 354                 DEBUG(3, ("pdb_default_create_user: failed to create a new user structure: %s\n", nt_errstr(status)));
 355                 return status;
 356         }
 357
 358         if (!sid_peek_check_rid(get_global_sam_sid(),
 359                                 pdb_get_user_sid(sam_pass), rid)) {
 360                 DEBUG(0, ("Could not get RID of fresh user\n"));
 361                 return NT_STATUS_INTERNAL_ERROR;
 362         }
 363
 364         /* Use the username case specified in the original request */
 365
 366         pdb_set_username( sam_pass, name, PDB_SET );
 367
 368         /* Disable the account on creation, it does not have a reasonable password yet. */
 369
 370         acb_info |= ACB_DISABLED;
 371
 372         pdb_set_acct_ctrl(sam_pass, acb_info, PDB_CHANGED);
 373
 374         status = pdb_add_sam_account(sam_pass);
 375
 376         TALLOC_FREE(sam_pass);
 377
 378         return status;
 379 }
 380
 381 NTSTATUS pdb_create_user(TALLOC_CTX *mem_ctx, const char *name, uint32 flags,
 382                          uint32 *rid)
 383 {
 384         struct pdb_methods *pdb = pdb_get_methods();
 385         return pdb->create_user(pdb, mem_ctx, name, flags, rid);
 386 }
 387
 388 /****************************************************************************
 389  Delete a UNIX user on demand.
 390 ****************************************************************************/
 391
 392 static int smb_delete_user(const char *unix_user)
 393 {
 394         pstring del_script;
 395         int ret;
 396
 397         /* safety check */
 398
 399         if ( strequal( unix_user, "root" ) ) {
 400                 DEBUG(0,("smb_delete_user: Refusing to delete local system root account!\n"));
 401                 return -1;
 402         }
 403
 404         pstrcpy(del_script, lp_deluser_script());
 405         if (! *del_script)
 406                 return -1;
 407         all_string_sub(del_script, "%u", unix_user, sizeof(del_script));
 408         ret = smbrun(del_script,NULL);
 409         flush_pwnam_cache();
 410         if (ret == 0) {
 411                 smb_nscd_flush_user_cache();
 412         }
 413         DEBUG(ret ? 0 : 3,("smb_delete_user: Running the command `%s' gave %d\n",del_script,ret));
 414
 415         return ret;
 416 }
 417
 418 static NTSTATUS pdb_default_delete_user(struct pdb_methods *methods,
 419                                         TALLOC_CTX *mem_ctx,
 420                                         struct samu *sam_acct)
 421 {
 422         NTSTATUS status;
 423         fstring username;
 424
 425         status = pdb_delete_sam_account(sam_acct);
 426         if (!NT_STATUS_IS_OK(status)) {
 427                 return status;
 428         }
 429
 430         /*
 431          * Now delete the unix side ....
 432          * note: we don't check if the delete really happened as the script is
 433          * not necessary present and maybe the sysadmin doesn't want to delete
 434          * the unix side
 435          */
 436
 437         /* always lower case the username before handing it off to
 438            external scripts */
 439
 440         fstrcpy( username, pdb_get_username(sam_acct) );
 441         strlower_m( username );
 442
 443         smb_delete_user( username );
 444
 445         return status;
 446 }
 447
 448 NTSTATUS pdb_delete_user(TALLOC_CTX *mem_ctx, struct samu *sam_acct)
 449 {
 450         struct pdb_methods *pdb = pdb_get_methods();
 451         uid_t uid = -1;
 452
 453         /* sanity check to make sure we don't delete root */
 454
 455         if ( !sid_to_uid( pdb_get_user_sid(sam_acct), &uid ) ) {
 456                 return NT_STATUS_NO_SUCH_USER;
 457         }
 458
 459         if ( uid == 0 ) {
 460                 return NT_STATUS_ACCESS_DENIED;
 461         }
 462
 463         return pdb->delete_user(pdb, mem_ctx, sam_acct);
 464 }
 465
 466 NTSTATUS pdb_add_sam_account(struct samu *sam_acct)
 467 {
 468         struct pdb_methods *pdb = pdb_get_methods();
 469         return pdb->add_sam_account(pdb, sam_acct);
 470 }
 471
 472 NTSTATUS pdb_update_sam_account(struct samu *sam_acct)
 473 {
 474         struct pdb_methods *pdb = pdb_get_methods();
 475
 476         if (csamuser != NULL) {
 477                 TALLOC_FREE(csamuser);
 478                 csamuser = NULL;
 479         }
 480
 481         return pdb->update_sam_account(pdb, sam_acct);
 482 }
 483
 484 NTSTATUS pdb_delete_sam_account(struct samu *sam_acct)
 485 {
 486         struct pdb_methods *pdb = pdb_get_methods();
 487
 488         if (csamuser != NULL) {
 489                 TALLOC_FREE(csamuser);
 490                 csamuser = NULL;
 491         }
 492
 493         return pdb->delete_sam_account(pdb, sam_acct);
 494 }
 495
 496 NTSTATUS pdb_rename_sam_account(struct samu *oldname, const char *newname)
 497 {
 498         struct pdb_methods *pdb = pdb_get_methods();
 499         uid_t uid;
 500         NTSTATUS status;
 501
 502         if (csamuser != NULL) {
 503                 TALLOC_FREE(csamuser);
 504                 csamuser = NULL;
 505         }
 506
 507         /* sanity check to make sure we don't rename root */
 508
 509         if ( !sid_to_uid( pdb_get_user_sid(oldname), &uid ) ) {
 510                 return NT_STATUS_NO_SUCH_USER;
 511         }
 512
 513         if ( uid == 0 ) {
 514                 return NT_STATUS_ACCESS_DENIED;
 515         }
 516
 517         status = pdb->rename_sam_account(pdb, oldname, newname);
 518
 519         /* always flush the cache here just to be safe */
 520         flush_pwnam_cache();
 521
 522         return status;
 523 }
 524
 525 NTSTATUS pdb_update_login_attempts(struct samu *sam_acct, BOOL success)
 526 {
 527         struct pdb_methods *pdb = pdb_get_methods();
 528         return pdb->update_login_attempts(pdb, sam_acct, success);
 529 }
 530
 531 BOOL pdb_getgrsid(GROUP_MAP *map, DOM_SID sid)
 532 {
 533         struct pdb_methods *pdb = pdb_get_methods();
 534         return NT_STATUS_IS_OK(pdb->getgrsid(pdb, map, sid));
 535 }
 536
 537 BOOL pdb_getgrgid(GROUP_MAP *map, gid_t gid)
 538 {
 539         struct pdb_methods *pdb = pdb_get_methods();
 540         return NT_STATUS_IS_OK(pdb->getgrgid(pdb, map, gid));
 541 }
 542
 543 BOOL pdb_getgrnam(GROUP_MAP *map, const char *name)
 544 {
 545         struct pdb_methods *pdb = pdb_get_methods();
 546         return NT_STATUS_IS_OK(pdb->getgrnam(pdb, map, name));
 547 }
 548
 549 static NTSTATUS pdb_default_create_dom_group(struct pdb_methods *methods,
 550                                              TALLOC_CTX *mem_ctx,
 551                                              const char *name,
 552                                              uint32 *rid)
 553 {
 554         DOM_SID group_sid;
 555         struct group *grp;
 556
 557         grp = getgrnam(name);
 558
 559         if (grp == NULL) {
 560                 gid_t gid;
 561
 562                 if (smb_create_group(name, &gid) != 0) {
 563                         return NT_STATUS_ACCESS_DENIED;
 564                 }
 565
 566                 grp = getgrgid(gid);
 567         }
 568
 569         if (grp == NULL) {
 570                 return NT_STATUS_ACCESS_DENIED;
 571         }
 572
 573         if (pdb_rid_algorithm()) {
 574                 *rid = algorithmic_pdb_gid_to_group_rid( grp->gr_gid );
 575         } else {
 576                 if (!pdb_new_rid(rid)) {
 577                         return NT_STATUS_ACCESS_DENIED;
 578                 }
 579         }
 580
 581         sid_compose(&group_sid, get_global_sam_sid(), *rid);
 582
 583         return add_initial_entry(grp->gr_gid, sid_string_static(&group_sid),
 584                                  SID_NAME_DOM_GRP, name, NULL);
 585 }
 586
 587 NTSTATUS pdb_create_dom_group(TALLOC_CTX *mem_ctx, const char *name,
 588                               uint32 *rid)
 589 {
 590         struct pdb_methods *pdb = pdb_get_methods();
 591         return pdb->create_dom_group(pdb, mem_ctx, name, rid);
 592 }
 593
 594 static NTSTATUS pdb_default_delete_dom_group(struct pdb_methods *methods,
 595                                              TALLOC_CTX *mem_ctx,
 596                                              uint32 rid)
 597 {
 598         DOM_SID group_sid;
 599         GROUP_MAP map;
 600         NTSTATUS status;
 601         struct group *grp;
 602         const char *grp_name;
 603
 604         sid_compose(&group_sid, get_global_sam_sid(), rid);
 605
 606         if (!get_domain_group_from_sid(group_sid, &map)) {
 607                 DEBUG(10, ("Could not find group for rid %d\n", rid));
 608                 return NT_STATUS_NO_SUCH_GROUP;
 609         }
 610
 611         /* We need the group name for the smb_delete_group later on */
 612
 613         if (map.gid == (gid_t)-1) {
 614                 return NT_STATUS_NO_SUCH_GROUP;
 615         }
 616
 617         grp = getgrgid(map.gid);
 618         if (grp == NULL) {
 619                 return NT_STATUS_NO_SUCH_GROUP;
 620         }
 621
 622         /* Copy the name, no idea what pdb_delete_group_mapping_entry does.. */
 623
 624         grp_name = talloc_strdup(mem_ctx, grp->gr_name);
 625         if (grp_name == NULL) {
 626                 return NT_STATUS_NO_MEMORY;
 627         }
 628
 629         status = pdb_delete_group_mapping_entry(group_sid);
 630
 631         if (!NT_STATUS_IS_OK(status)) {
 632                 return status;
 633         }
 634
 635         /* Don't check the result of smb_delete_group */
 636
 637         smb_delete_group(grp_name);
 638
 639         return NT_STATUS_OK;
 640 }
 641
 642 NTSTATUS pdb_delete_dom_group(TALLOC_CTX *mem_ctx, uint32 rid)
 643 {
 644         struct pdb_methods *pdb = pdb_get_methods();
 645         return pdb->delete_dom_group(pdb, mem_ctx, rid);
 646 }
 647
 648 NTSTATUS pdb_add_group_mapping_entry(GROUP_MAP *map)
 649 {
 650         struct pdb_methods *pdb = pdb_get_methods();
 651         return pdb->add_group_mapping_entry(pdb, map);
 652 }
 653
 654 NTSTATUS pdb_update_group_mapping_entry(GROUP_MAP *map)
 655 {
 656         struct pdb_methods *pdb = pdb_get_methods();
 657         return pdb->update_group_mapping_entry(pdb, map);
 658 }
 659
 660 NTSTATUS pdb_delete_group_mapping_entry(DOM_SID sid)
 661 {
 662         struct pdb_methods *pdb = pdb_get_methods();
 663         return pdb->delete_group_mapping_entry(pdb, sid);
 664 }
 665
 666 BOOL pdb_enum_group_mapping(const DOM_SID *sid, enum lsa_SidType sid_name_use, GROUP_MAP **pp_rmap,
 667                             size_t *p_num_entries, BOOL unix_only)
 668 {
 669         struct pdb_methods *pdb = pdb_get_methods();
 670         return NT_STATUS_IS_OK(pdb-> enum_group_mapping(pdb, sid, sid_name_use,
 671                 pp_rmap, p_num_entries, unix_only));
 672 }
 673
 674 NTSTATUS pdb_enum_group_members(TALLOC_CTX *mem_ctx,
 675                                 const DOM_SID *sid,
 676                                 uint32 **pp_member_rids,
 677                                 size_t *p_num_members)
 678 {
 679         struct pdb_methods *pdb = pdb_get_methods();
 680         NTSTATUS result;
 681
 682         result = pdb->enum_group_members(pdb, mem_ctx,
 683                         sid, pp_member_rids, p_num_members);
 684
 685         /* special check for rid 513 */
 686
 687         if ( !NT_STATUS_IS_OK( result ) ) {
 688                 uint32 rid;
 689
 690                 sid_peek_rid( sid, &rid );
 691
 692                 if ( rid == DOMAIN_GROUP_RID_USERS ) {
 693                         *p_num_members = 0;
 694                         *pp_member_rids = NULL;
 695
 696                         return NT_STATUS_OK;
 697                 }
 698         }
 699
 700         return result;
 701 }
 702
 703 NTSTATUS pdb_enum_group_memberships(TALLOC_CTX *mem_ctx, struct samu *user,
 704                                     DOM_SID **pp_sids, gid_t **pp_gids,
 705                                     size_t *p_num_groups)
 706 {
 707         struct pdb_methods *pdb = pdb_get_methods();
 708         return pdb->enum_group_memberships(
 709                 pdb, mem_ctx, user,
 710                 pp_sids, pp_gids, p_num_groups);
 711 }
 712
 713 static NTSTATUS pdb_default_set_unix_primary_group(struct pdb_methods *methods,
 714                                                    TALLOC_CTX *mem_ctx,
 715                                                    struct samu *sampass)
 716 {
 717         struct group *grp;
 718         gid_t gid;
 719
 720         if (!sid_to_gid(pdb_get_group_sid(sampass), &gid) ||
 721             (grp = getgrgid(gid)) == NULL) {
 722                 return NT_STATUS_INVALID_PRIMARY_GROUP;
 723         }
 724
 725         if (smb_set_primary_group(grp->gr_name,
 726                                   pdb_get_username(sampass)) != 0) {
 727                 return NT_STATUS_ACCESS_DENIED;
 728         }
 729
 730         return NT_STATUS_OK;
 731 }
 732
 733 NTSTATUS pdb_set_unix_primary_group(TALLOC_CTX *mem_ctx, struct samu *user)
 734 {
 735         struct pdb_methods *pdb = pdb_get_methods();
 736         return pdb->set_unix_primary_group(pdb, mem_ctx, user);
 737 }
 738
 739 /*
 740  * Helper function to see whether a user is in a group. We can't use
 741  * user_in_group_sid here because this creates dependencies only smbd can
 742  * fulfil.
 743  */
 744
 745 static BOOL pdb_user_in_group(TALLOC_CTX *mem_ctx, struct samu *account,
 746                               const DOM_SID *group_sid)
 747 {
 748         DOM_SID *sids;
 749         gid_t *gids;
 750         size_t i, num_groups;
 751
 752         if (!NT_STATUS_IS_OK(pdb_enum_group_memberships(mem_ctx, account,
 753                                                         &sids, &gids,
 754                                                         &num_groups))) {
 755                 return False;
 756         }
 757
 758         for (i=0; i<num_groups; i++) {
 759                 if (sid_equal(group_sid, &sids[i])) {
 760                         return True;
 761                 }
 762         }
 763         return False;
 764 }
 765
 766 static NTSTATUS pdb_default_add_groupmem(struct pdb_methods *methods,
 767                                          TALLOC_CTX *mem_ctx,
 768                                          uint32 group_rid,
 769                                          uint32 member_rid)
 770 {
 771         DOM_SID group_sid, member_sid;
 772         struct samu *account = NULL;
 773         GROUP_MAP map;
 774         struct group *grp;
 775         struct passwd *pwd;
 776         const char *group_name;
 777         uid_t uid;
 778
 779         sid_compose(&group_sid, get_global_sam_sid(), group_rid);
 780         sid_compose(&member_sid, get_global_sam_sid(), member_rid);
 781
 782         if (!get_domain_group_from_sid(group_sid, &map) ||
 783             (map.gid == (gid_t)-1) ||
 784             ((grp = getgrgid(map.gid)) == NULL)) {
 785                 return NT_STATUS_NO_SUCH_GROUP;
 786         }
 787
 788         group_name = talloc_strdup(mem_ctx, grp->gr_name);
 789         if (group_name == NULL) {
 790                 return NT_STATUS_NO_MEMORY;
 791         }
 792
 793         if ( !(account = samu_new( NULL )) ) {
 794                 return NT_STATUS_NO_MEMORY;
 795         }
 796
 797         if (!pdb_getsampwsid(account, &member_sid) ||
 798             !sid_to_uid(&member_sid, &uid) ||
 799             ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
 800                 return NT_STATUS_NO_SUCH_USER;
 801         }
 802
 803         if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
 804                 return NT_STATUS_MEMBER_IN_GROUP;
 805         }
 806
 807         /*
 808          * ok, the group exist, the user exist, the user is not in the group,
 809          * we can (finally) add it to the group !
 810          */
 811
 812         smb_add_user_group(group_name, pwd->pw_name);
 813
 814         if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
 815                 return NT_STATUS_ACCESS_DENIED;
 816         }
 817
 818         return NT_STATUS_OK;
 819 }
 820
 821 NTSTATUS pdb_add_groupmem(TALLOC_CTX *mem_ctx, uint32 group_rid,
 822                           uint32 member_rid)
 823 {
 824         struct pdb_methods *pdb = pdb_get_methods();
 825         return pdb->add_groupmem(pdb, mem_ctx, group_rid, member_rid);
 826 }
 827
 828 static NTSTATUS pdb_default_del_groupmem(struct pdb_methods *methods,
 829                                          TALLOC_CTX *mem_ctx,
 830                                          uint32 group_rid,
 831                                          uint32 member_rid)
 832 {
 833         DOM_SID group_sid, member_sid;
 834         struct samu *account = NULL;
 835         GROUP_MAP map;
 836         struct group *grp;
 837         struct passwd *pwd;
 838         const char *group_name;
 839         uid_t uid;
 840
 841         sid_compose(&group_sid, get_global_sam_sid(), group_rid);
 842         sid_compose(&member_sid, get_global_sam_sid(), member_rid);
 843
 844         if (!get_domain_group_from_sid(group_sid, &map) ||
 845             (map.gid == (gid_t)-1) ||
 846             ((grp = getgrgid(map.gid)) == NULL)) {
 847                 return NT_STATUS_NO_SUCH_GROUP;
 848         }
 849
 850         group_name = talloc_strdup(mem_ctx, grp->gr_name);
 851         if (group_name == NULL) {
 852                 return NT_STATUS_NO_MEMORY;
 853         }
 854
 855         if ( !(account = samu_new( NULL )) ) {
 856                 return NT_STATUS_NO_MEMORY;
 857         }
 858
 859         if (!pdb_getsampwsid(account, &member_sid) ||
 860             !sid_to_uid(&member_sid, &uid) ||
 861             ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
 862                 return NT_STATUS_NO_SUCH_USER;
 863         }
 864
 865         if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
 866                 return NT_STATUS_MEMBER_NOT_IN_GROUP;
 867         }
 868
 869         /*
 870          * ok, the group exist, the user exist, the user is in the group,
 871          * we can (finally) delete it from the group!
 872          */
 873
 874         smb_delete_user_group(group_name, pwd->pw_name);
 875
 876         if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
 877                 return NT_STATUS_ACCESS_DENIED;
 878         }
 879
 880         return NT_STATUS_OK;
 881 }
 882
 883 NTSTATUS pdb_del_groupmem(TALLOC_CTX *mem_ctx, uint32 group_rid,
 884                           uint32 member_rid)
 885 {
 886         struct pdb_methods *pdb = pdb_get_methods();
 887         return pdb->del_groupmem(pdb, mem_ctx, group_rid, member_rid);
 888 }
 889
 890 BOOL pdb_find_alias(const char *name, DOM_SID *sid)
 891 {
 892         struct pdb_methods *pdb = pdb_get_methods();
 893         return NT_STATUS_IS_OK(pdb->find_alias(pdb, name, sid));
 894 }
 895
 896 NTSTATUS pdb_create_alias(const char *name, uint32 *rid)
 897 {
 898         struct pdb_methods *pdb = pdb_get_methods();
 899         return pdb->create_alias(pdb, name, rid);
 900 }
 901
 902 BOOL pdb_delete_alias(const DOM_SID *sid)
 903 {
 904         struct pdb_methods *pdb = pdb_get_methods();
 905         return NT_STATUS_IS_OK(pdb->delete_alias(pdb, sid));
 906
 907 }
 908
 909 BOOL pdb_get_aliasinfo(const DOM_SID *sid, struct acct_info *info)
 910 {
 911         struct pdb_methods *pdb = pdb_get_methods();
 912         return NT_STATUS_IS_OK(pdb->get_aliasinfo(pdb, sid, info));
 913 }
 914
 915 BOOL pdb_set_aliasinfo(const DOM_SID *sid, struct acct_info *info)
 916 {
 917         struct pdb_methods *pdb = pdb_get_methods();
 918         return NT_STATUS_IS_OK(pdb->set_aliasinfo(pdb, sid, info));
 919 }
 920
 921 NTSTATUS pdb_add_aliasmem(const DOM_SID *alias, const DOM_SID *member)
 922 {
 923         struct pdb_methods *pdb = pdb_get_methods();
 924         return pdb->add_aliasmem(pdb, alias, member);
 925 }
 926
 927 NTSTATUS pdb_del_aliasmem(const DOM_SID *alias, const DOM_SID *member)
 928 {
 929         struct pdb_methods *pdb = pdb_get_methods();
 930         return pdb->del_aliasmem(pdb, alias, member);
 931 }
 932
 933 NTSTATUS pdb_enum_aliasmem(const DOM_SID *alias,
 934                            DOM_SID **pp_members, size_t *p_num_members)
 935 {
 936         struct pdb_methods *pdb = pdb_get_methods();
 937         return pdb->enum_aliasmem(pdb, alias, pp_members, p_num_members);
 938 }
 939
 940 NTSTATUS pdb_enum_alias_memberships(TALLOC_CTX *mem_ctx,
 941                                     const DOM_SID *domain_sid,
 942                                     const DOM_SID *members, size_t num_members,
 943                                     uint32 **pp_alias_rids,
 944                                     size_t *p_num_alias_rids)
 945 {
 946         struct pdb_methods *pdb = pdb_get_methods();
 947         return pdb->enum_alias_memberships(pdb, mem_ctx,
 948                                                        domain_sid,
 949                                                        members, num_members,
 950                                                        pp_alias_rids,
 951                                                        p_num_alias_rids);
 952 }
 953
 954 NTSTATUS pdb_lookup_rids(const DOM_SID *domain_sid,
 955                          int num_rids,
 956                          uint32 *rids,
 957                          const char **names,
 958                          enum lsa_SidType *attrs)
 959 {
 960         struct pdb_methods *pdb = pdb_get_methods();
 961         return pdb->lookup_rids(pdb, domain_sid, num_rids, rids, names, attrs);
 962 }
 963
 964 NTSTATUS pdb_lookup_names(const DOM_SID *domain_sid,
 965                           int num_names,
 966                           const char **names,
 967                           uint32 *rids,
 968                           enum lsa_SidType *attrs)
 969 {
 970         struct pdb_methods *pdb = pdb_get_methods();
 971         return pdb->lookup_names(pdb, domain_sid, num_names, names, rids, attrs);
 972 }
 973
 974 BOOL pdb_get_account_policy(int policy_index, uint32 *value)
 975 {
 976         struct pdb_methods *pdb = pdb_get_methods();
 977         return NT_STATUS_IS_OK(pdb->get_account_policy(pdb, policy_index, value));
 978 }
 979
 980 BOOL pdb_set_account_policy(int policy_index, uint32 value)
 981 {
 982         struct pdb_methods *pdb = pdb_get_methods();
 983         return NT_STATUS_IS_OK(pdb->set_account_policy(pdb, policy_index, value));
 984 }
 985
 986 BOOL pdb_get_seq_num(time_t *seq_num)
 987 {
 988         struct pdb_methods *pdb = pdb_get_methods();
 989         return NT_STATUS_IS_OK(pdb->get_seq_num(pdb, seq_num));
 990 }
 991
 992 BOOL pdb_uid_to_rid(uid_t uid, uint32 *rid)
 993 {
 994         struct pdb_methods *pdb = pdb_get_methods();
 995         return pdb->uid_to_rid(pdb, uid, rid);
 996 }
 997
 998 BOOL pdb_gid_to_sid(gid_t gid, DOM_SID *sid)
 999 {
1000         struct pdb_methods *pdb = pdb_get_methods();
1001         return pdb->gid_to_sid(pdb, gid, sid);
1002 }
1003
1004 BOOL pdb_sid_to_id(const DOM_SID *sid, union unid_t *id,
1005                    enum lsa_SidType *type)
1006 {
1007         struct pdb_methods *pdb = pdb_get_methods();
1008         return pdb->sid_to_id(pdb, sid, id, type);
1009 }
1010
1011 BOOL pdb_rid_algorithm(void)
1012 {
1013         struct pdb_methods *pdb = pdb_get_methods();
1014         return pdb->rid_algorithm(pdb);
1015 }
1016
1017 /********************************************************************
1018  Allocate a new RID from the passdb backend.  Verify that it is free
1019  by calling lookup_global_sam_rid() to verify that the RID is not
1020  in use.  This handles servers that have existing users or groups
1021  with add RIDs (assigned from previous algorithmic mappings)
1022 ********************************************************************/
1023
1024 BOOL pdb_new_rid(uint32 *rid)
1025 {
1026         struct pdb_methods *pdb = pdb_get_methods();
1027         const char *name = NULL;
1028         enum lsa_SidType type;
1029         uint32 allocated_rid = 0;
1030         int i;
1031         TALLOC_CTX *ctx;
1032
1033         if (pdb_rid_algorithm()) {
1034                 DEBUG(0, ("Trying to allocate a RID when algorithmic RIDs "
1035                           "are active\n"));
1036                 return False;
1037         }
1038
1039         if (algorithmic_rid_base() != BASE_RID) {
1040                 DEBUG(0, ("'algorithmic rid base' is set but a passdb backend "
1041                           "without algorithmic RIDs is chosen.\n"));
1042                 DEBUGADD(0, ("Please map all used groups using 'net groupmap "
1043                              "add', set the maximum used RID using\n"));
1044                 DEBUGADD(0, ("'net setmaxrid' and remove the parameter\n"));
1045                 return False;
1046         }
1047
1048         if ( (ctx = talloc_init("pdb_new_rid")) == NULL ) {
1049                 DEBUG(0,("pdb_new_rid: Talloc initialization failure\n"));
1050                 return False;
1051         }
1052
1053         /* Attempt to get an unused RID (max tires is 250...yes that it is
1054            and arbitrary number I pulkled out of my head).   -- jerry */
1055
1056         for ( i=0; allocated_rid==0 && i<250; i++ ) {
1057                 /* get a new RID */
1058
1059                 if ( !pdb->new_rid(pdb, &allocated_rid) ) {
1060                         return False;
1061                 }
1062
1063                 /* validate that the RID is not in use */
1064
1065                 if ( lookup_global_sam_rid( ctx, allocated_rid, &name, &type, NULL ) ) {
1066                         allocated_rid = 0;
1067                 }
1068         }
1069
1070         TALLOC_FREE( ctx );
1071
1072         if ( allocated_rid == 0 ) {
1073                 DEBUG(0,("pdb_new_rid: Failed to find unused RID\n"));
1074                 return False;
1075         }
1076
1077         *rid = allocated_rid;
1078
1079         return True;
1080 }
1081
1082 /***************************************************************
1083   Initialize the static context (at smbd startup etc).
1084
1085   If uninitialised, context will auto-init on first use.
1086  ***************************************************************/
1087
1088 BOOL initialize_password_db(BOOL reload)
1089 {
1090         return (pdb_get_methods_reload(reload) != NULL);
1091 }
1092
1093
1094 /***************************************************************************
1095   Default implementations of some functions.
1096  ****************************************************************************/
1097
1098 static NTSTATUS pdb_default_getsampwnam (struct pdb_methods *methods, struct samu *user, const char *sname)
1099 {
1100         return NT_STATUS_NO_SUCH_USER;
1101 }
1102
1103 static NTSTATUS pdb_default_getsampwsid(struct pdb_methods *my_methods, struct samu * user, const DOM_SID *sid)
1104 {
1105         return NT_STATUS_NO_SUCH_USER;
1106 }
1107
1108 static NTSTATUS pdb_default_add_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1109 {
1110         return NT_STATUS_NOT_IMPLEMENTED;
1111 }
1112
1113 static NTSTATUS pdb_default_update_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1114 {
1115         return NT_STATUS_NOT_IMPLEMENTED;
1116 }
1117
1118 static NTSTATUS pdb_default_delete_sam_account (struct pdb_methods *methods, struct samu *pwd)
1119 {
1120         return NT_STATUS_NOT_IMPLEMENTED;
1121 }
1122
1123 static NTSTATUS pdb_default_rename_sam_account (struct pdb_methods *methods, struct samu *pwd, const char *newname)
1124 {
1125         return NT_STATUS_NOT_IMPLEMENTED;
1126 }
1127
1128 static NTSTATUS pdb_default_update_login_attempts (struct pdb_methods *methods, struct samu *newpwd, BOOL success)
1129 {
1130         return NT_STATUS_OK;
1131 }
1132
1133 static NTSTATUS pdb_default_setsampwent(struct pdb_methods *methods, BOOL update, uint32 acb_mask)
1134 {
1135         return NT_STATUS_NOT_IMPLEMENTED;
1136 }
1137
1138 static NTSTATUS pdb_default_getsampwent(struct pdb_methods *methods, struct samu *user)
1139 {
1140         return NT_STATUS_NOT_IMPLEMENTED;
1141 }
1142
1143 static void pdb_default_endsampwent(struct pdb_methods *methods)
1144 {
1145         return; /* NT_STATUS_NOT_IMPLEMENTED; */
1146 }
1147
1148 static NTSTATUS pdb_default_get_account_policy(struct pdb_methods *methods, int policy_index, uint32 *value)
1149 {
1150         return account_policy_get(policy_index, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1151 }
1152
1153 static NTSTATUS pdb_default_set_account_policy(struct pdb_methods *methods, int policy_index, uint32 value)
1154 {
1155         return account_policy_set(policy_index, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1156 }
1157
1158 static NTSTATUS pdb_default_get_seq_num(struct pdb_methods *methods, time_t *seq_num)
1159 {
1160         *seq_num = time(NULL);
1161         return NT_STATUS_OK;
1162 }
1163
1164 static BOOL pdb_default_uid_to_rid(struct pdb_methods *methods, uid_t uid,
1165                                    uint32 *rid)
1166 {
1167         struct samu *sampw = NULL;
1168         struct passwd *unix_pw;
1169         BOOL ret;
1170
1171         unix_pw = sys_getpwuid( uid );
1172
1173         if ( !unix_pw ) {
1174                 DEBUG(4,("pdb_default_uid_to_rid: host has no idea of uid "
1175                          "%lu\n", (unsigned long)uid));
1176                 return False;
1177         }
1178
1179         if ( !(sampw = samu_new( NULL )) ) {
1180                 DEBUG(0,("pdb_default_uid_to_rid: samu_new() failed!\n"));
1181                 return False;
1182         }
1183
1184         become_root();
1185         ret = NT_STATUS_IS_OK(
1186                 methods->getsampwnam(methods, sampw, unix_pw->pw_name ));
1187         unbecome_root();
1188
1189         if (!ret) {
1190                 DEBUG(5, ("pdb_default_uid_to_rid: Did not find user "
1191                           "%s (%d)\n", unix_pw->pw_name, uid));
1192                 TALLOC_FREE(sampw);
1193                 return False;
1194         }
1195
1196         ret = sid_peek_check_rid(get_global_sam_sid(),
1197                                  pdb_get_user_sid(sampw), rid);
1198
1199         if (!ret) {
1200                 DEBUG(1, ("Could not peek rid out of sid %s\n",
1201                           sid_string_static(pdb_get_user_sid(sampw))));
1202         }
1203
1204         TALLOC_FREE(sampw);
1205         return ret;
1206 }
1207
1208 static BOOL pdb_default_gid_to_sid(struct pdb_methods *methods, gid_t gid,
1209                                    DOM_SID *sid)
1210 {
1211         GROUP_MAP map;
1212
1213         if (!NT_STATUS_IS_OK(methods->getgrgid(methods, &map, gid))) {
1214                 return False;
1215         }
1216
1217         sid_copy(sid, &map.sid);
1218         return True;
1219 }
1220
1221 static BOOL pdb_default_sid_to_id(struct pdb_methods *methods,
1222                                   const DOM_SID *sid,
1223                                   union unid_t *id, enum lsa_SidType *type)
1224 {
1225         TALLOC_CTX *mem_ctx;
1226         BOOL ret = False;
1227         const char *name;
1228         uint32 rid;
1229
1230         mem_ctx = talloc_new(NULL);
1231
1232         if (mem_ctx == NULL) {
1233                 DEBUG(0, ("talloc_new failed\n"));
1234                 return False;
1235         }
1236
1237         if (sid_peek_check_rid(get_global_sam_sid(), sid, &rid)) {
1238                 /* Here we might have users as well as groups and aliases */
1239                 ret = lookup_global_sam_rid(mem_ctx, rid, &name, type, id);
1240                 goto done;
1241         }
1242
1243         if (sid_peek_check_rid(&global_sid_Builtin, sid, &rid)) {
1244                 /* Here we only have aliases */
1245                 GROUP_MAP map;
1246                 if (!NT_STATUS_IS_OK(methods->getgrsid(methods, &map, *sid))) {
1247                         DEBUG(10, ("Could not find map for sid %s\n",
1248                                    sid_string_static(sid)));
1249                         goto done;
1250                 }
1251                 if ((map.sid_name_use != SID_NAME_ALIAS) &&
1252                     (map.sid_name_use != SID_NAME_WKN_GRP)) {
1253                         DEBUG(10, ("Map for sid %s is a %s, expected an "
1254                                    "alias\n", sid_string_static(sid),
1255                                    sid_type_lookup(map.sid_name_use)));
1256                         goto done;
1257                 }
1258
1259                 id->gid = map.gid;
1260                 *type = SID_NAME_ALIAS;
1261                 ret = True;
1262                 goto done;
1263         }
1264
1265         DEBUG(5, ("Sid %s is neither ours nor builtin, don't know it\n",
1266                   sid_string_static(sid)));
1267
1268  done:
1269
1270         TALLOC_FREE(mem_ctx);
1271         return ret;
1272 }
1273
1274 static void add_uid_to_array_unique(TALLOC_CTX *mem_ctx,
1275                                     uid_t uid, uid_t **pp_uids, size_t *p_num)
1276 {
1277         size_t i;
1278
1279         for (i=0; i<*p_num; i++) {
1280                 if ((*pp_uids)[i] == uid)
1281                         return;
1282         }
1283
1284         *pp_uids = TALLOC_REALLOC_ARRAY(mem_ctx, *pp_uids, uid_t, *p_num+1);
1285
1286         if (*pp_uids == NULL)
1287                 return;
1288
1289         (*pp_uids)[*p_num] = uid;
1290         *p_num += 1;
1291 }
1292
1293 static BOOL get_memberuids(TALLOC_CTX *mem_ctx, gid_t gid, uid_t **pp_uids, size_t *p_num)
1294 {
1295         struct group *grp;
1296         char **gr;
1297         struct passwd *pwd;
1298         char *winbindd_env;
1299
1300         *pp_uids = NULL;
1301         *p_num = 0;
1302
1303         /* We only look at our own sam, so don't care about imported stuff */
1304
1305         winbindd_env = getenv(WINBINDD_DONT_ENV);
1306         winbind_off();
1307
1308         if ((grp = getgrgid(gid)) == NULL) {
1309                 /* allow winbindd lookups, but only if they weren't already disabled */
1310                 if ( !(winbindd_env && strequal(winbindd_env, "1")) ) {
1311                         winbind_on();
1312                 }
1313
1314                 return False;
1315         }
1316
1317         /* Primary group members */
1318
1319         setpwent();
1320         while ((pwd = getpwent()) != NULL) {
1321                 if (pwd->pw_gid == gid) {
1322                         add_uid_to_array_unique(mem_ctx, pwd->pw_uid,
1323                                                 pp_uids, p_num);
1324                 }
1325         }
1326         endpwent();
1327
1328         /* Secondary group members */
1329
1330         for (gr = grp->gr_mem; (*gr != NULL) && ((*gr)[0] != '\0'); gr += 1) {
1331                 struct passwd *pw = getpwnam(*gr);
1332
1333                 if (pw == NULL)
1334                         continue;
1335                 add_uid_to_array_unique(mem_ctx, pw->pw_uid, pp_uids, p_num);
1336         }
1337
1338         /* allow winbindd lookups, but only if they weren't already disabled */
1339
1340         if ( !(winbindd_env && strequal(winbindd_env, "1")) ) {
1341                 winbind_on();
1342         }
1343
1344         return True;
1345 }
1346
1347 NTSTATUS pdb_default_enum_group_members(struct pdb_methods *methods,
1348                                         TALLOC_CTX *mem_ctx,
1349                                         const DOM_SID *group,
1350                                         uint32 **pp_member_rids,
1351                                         size_t *p_num_members)
1352 {
1353         gid_t gid;
1354         uid_t *uids;
1355         size_t i, num_uids;
1356
1357         *pp_member_rids = NULL;
1358         *p_num_members = 0;
1359
1360         if (!sid_to_gid(group, &gid))
1361                 return NT_STATUS_NO_SUCH_GROUP;
1362
1363         if(!get_memberuids(mem_ctx, gid, &uids, &num_uids))
1364                 return NT_STATUS_NO_SUCH_GROUP;
1365
1366         if (num_uids == 0)
1367                 return NT_STATUS_OK;
1368
1369         *pp_member_rids = TALLOC_ZERO_ARRAY(mem_ctx, uint32, num_uids);
1370
1371         for (i=0; i<num_uids; i++) {
1372                 DOM_SID sid;
1373
1374                 uid_to_sid(&sid, uids[i]);
1375
1376                 if (!sid_check_is_in_our_domain(&sid)) {
1377                         DEBUG(5, ("Inconsistent SAM -- group member uid not "
1378                                   "in our domain\n"));
1379                         continue;
1380                 }
1381
1382                 sid_peek_rid(&sid, &(*pp_member_rids)[*p_num_members]);
1383                 *p_num_members += 1;
1384         }
1385
1386         return NT_STATUS_OK;
1387 }
1388
1389 NTSTATUS pdb_default_enum_group_memberships(struct pdb_methods *methods,
1390                                             TALLOC_CTX *mem_ctx,
1391                                             struct samu *user,
1392                                             DOM_SID **pp_sids,
1393                                             gid_t **pp_gids,
1394                                             size_t *p_num_groups)
1395 {
1396         size_t i;
1397         gid_t gid;
1398         struct passwd *pw;
1399         const char *username = pdb_get_username(user);
1400
1401
1402         /* Ignore the primary group SID.  Honor the real Unix primary group.
1403            The primary group SID is only of real use to Windows clients */
1404
1405         if ( !(pw = getpwnam_alloc(mem_ctx, username)) ) {
1406                 return NT_STATUS_NO_SUCH_USER;
1407         }
1408
1409         gid = pw->pw_gid;
1410
1411         TALLOC_FREE( pw );
1412
1413         if (!getgroups_unix_user(mem_ctx, username, gid, pp_gids, p_num_groups)) {
1414                 return NT_STATUS_NO_SUCH_USER;
1415         }
1416
1417         if (*p_num_groups == 0) {
1418                 smb_panic("primary group missing");
1419         }
1420
1421         *pp_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, *p_num_groups);
1422
1423         if (*pp_sids == NULL) {
1424                 TALLOC_FREE(*pp_gids);
1425                 return NT_STATUS_NO_MEMORY;
1426         }
1427
1428         for (i=0; i<*p_num_groups; i++) {
1429                 gid_to_sid(&(*pp_sids)[i], (*pp_gids)[i]);
1430         }
1431
1432         return NT_STATUS_OK;
1433 }
1434
1435 /*******************************************************************
1436  Look up a rid in the SAM we're responsible for (i.e. passdb)
1437  ********************************************************************/
1438
1439 static BOOL lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32 rid,
1440                                   const char **name,
1441                                   enum lsa_SidType *psid_name_use,
1442                                   union unid_t *unix_id)
1443 {
1444         struct samu *sam_account = NULL;
1445         GROUP_MAP map;
1446         BOOL ret;
1447         DOM_SID sid;
1448
1449         *psid_name_use = SID_NAME_UNKNOWN;
1450
1451         DEBUG(5,("lookup_global_sam_rid: looking up RID %u.\n",
1452                  (unsigned int)rid));
1453
1454         sid_copy(&sid, get_global_sam_sid());
1455         sid_append_rid(&sid, rid);
1456
1457         /* see if the passdb can help us with the name of the user */
1458
1459         if ( !(sam_account = samu_new( NULL )) ) {
1460                 return False;
1461         }
1462
1463         /* BEING ROOT BLLOCK */
1464         become_root();
1465         if (pdb_getsampwsid(sam_account, &sid)) {
1466                 struct passwd *pw;
1467
1468                 unbecome_root();                /* -----> EXIT BECOME_ROOT() */
1469                 *name = talloc_strdup(mem_ctx, pdb_get_username(sam_account));
1470                 if (!*name) {
1471                         TALLOC_FREE(sam_account);
1472                         return False;
1473                 }
1474
1475                 *psid_name_use = SID_NAME_USER;
1476
1477                 TALLOC_FREE(sam_account);
1478
1479                 if (unix_id == NULL) {
1480                         return True;
1481                 }
1482
1483                 pw = Get_Pwnam(*name);
1484                 if (pw == NULL) {
1485                         return False;
1486                 }
1487                 unix_id->uid = pw->pw_uid;
1488                 return True;
1489         }
1490         TALLOC_FREE(sam_account);
1491
1492         ret = pdb_getgrsid(&map, sid);
1493         unbecome_root();
1494         /* END BECOME_ROOT BLOCK */
1495
1496         /* do not resolve SIDs to a name unless there is a valid
1497            gid associated with it */
1498
1499         if ( ret && (map.gid != (gid_t)-1) ) {
1500                 *name = talloc_strdup(mem_ctx, map.nt_name);
1501                 *psid_name_use = map.sid_name_use;
1502
1503                 if ( unix_id ) {
1504                         unix_id->gid = map.gid;
1505                 }
1506
1507                 return True;
1508         }
1509
1510         /* Windows will always map RID 513 to something.  On a non-domain
1511            controller, this gets mapped to SERVER\None. */
1512
1513         if ( unix_id ) {
1514                 DEBUG(5, ("Can't find a unix id for an unmapped group\n"));
1515                 return False;
1516         }
1517
1518         if ( rid == DOMAIN_GROUP_RID_USERS ) {
1519                 *name = talloc_strdup(mem_ctx, "None" );
1520                 *psid_name_use = SID_NAME_DOM_GRP;
1521
1522                 return True;
1523         }
1524
1525         return False;
1526 }
1527
1528 NTSTATUS pdb_default_lookup_rids(struct pdb_methods *methods,
1529                                  const DOM_SID *domain_sid,
1530                                  int num_rids,
1531                                  uint32 *rids,
1532                                  const char **names,
1533                                  enum lsa_SidType *attrs)
1534 {
1535         int i;
1536         NTSTATUS result;
1537         BOOL have_mapped = False;
1538         BOOL have_unmapped = False;
1539
1540         if (sid_check_is_builtin(domain_sid)) {
1541
1542                 for (i=0; i<num_rids; i++) {
1543                         const char *name;
1544
1545                         if (lookup_builtin_rid(names, rids[i], &name)) {
1546                                 attrs[i] = SID_NAME_ALIAS;
1547                                 names[i] = name;
1548                                 DEBUG(5,("lookup_rids: %s:%d\n",
1549                                          names[i], attrs[i]));
1550                                 have_mapped = True;
1551                         } else {
1552                                 have_unmapped = True;
1553                                 attrs[i] = SID_NAME_UNKNOWN;
1554                         }
1555                 }
1556                 goto done;
1557         }
1558
1559         /* Should not happen, but better check once too many */
1560         if (!sid_check_is_domain(domain_sid)) {
1561                 return NT_STATUS_INVALID_HANDLE;
1562         }
1563
1564         for (i = 0; i < num_rids; i++) {
1565                 const char *name;
1566
1567                 if (lookup_global_sam_rid(names, rids[i], &name, &attrs[i],
1568                                           NULL)) {
1569                         if (name == NULL) {
1570                                 return NT_STATUS_NO_MEMORY;
1571                         }
1572                         names[i] = name;
1573                         DEBUG(5,("lookup_rids: %s:%d\n", names[i], attrs[i]));
1574                         have_mapped = True;
1575                 } else {
1576                         have_unmapped = True;
1577                         attrs[i] = SID_NAME_UNKNOWN;
1578                 }
1579         }
1580
1581  done:
1582
1583         result = NT_STATUS_NONE_MAPPED;
1584
1585         if (have_mapped)
1586                 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1587
1588         return result;
1589 }
1590
1591 NTSTATUS pdb_default_lookup_names(struct pdb_methods *methods,
1592                                   const DOM_SID *domain_sid,
1593                                   int num_names,
1594                                   const char **names,
1595                                   uint32 *rids,
1596                                   enum lsa_SidType *attrs)
1597 {
1598         int i;
1599         NTSTATUS result;
1600         BOOL have_mapped = False;
1601         BOOL have_unmapped = False;
1602
1603         if (sid_check_is_builtin(domain_sid)) {
1604
1605                 for (i=0; i<num_names; i++) {
1606                         uint32 rid;
1607
1608                         if (lookup_builtin_name(names[i], &rid)) {
1609                                 attrs[i] = SID_NAME_ALIAS;
1610                                 rids[i] = rid;
1611                                 DEBUG(5,("lookup_rids: %s:%d\n",
1612                                          names[i], attrs[i]));
1613                                 have_mapped = True;
1614                         } else {
1615                                 have_unmapped = True;
1616                                 attrs[i] = SID_NAME_UNKNOWN;
1617                         }
1618                 }
1619                 goto done;
1620         }
1621
1622         /* Should not happen, but better check once too many */
1623         if (!sid_check_is_domain(domain_sid)) {
1624                 return NT_STATUS_INVALID_HANDLE;
1625         }
1626
1627         for (i = 0; i < num_names; i++) {
1628                 if (lookup_global_sam_name(names[i], 0, &rids[i], &attrs[i])) {
1629                         DEBUG(5,("lookup_names: %s-> %d:%d\n", names[i],
1630                                  rids[i], attrs[i]));
1631                         have_mapped = True;
1632                 } else {
1633                         have_unmapped = True;
1634                         attrs[i] = SID_NAME_UNKNOWN;
1635                 }
1636         }
1637
1638  done:
1639
1640         result = NT_STATUS_NONE_MAPPED;
1641
1642         if (have_mapped)
1643                 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1644
1645         return result;
1646 }
1647
1648 static struct pdb_search *pdb_search_init(enum pdb_search_type type)
1649 {
1650         TALLOC_CTX *mem_ctx;
1651         struct pdb_search *result;
1652
1653         mem_ctx = talloc_init("pdb_search");
1654         if (mem_ctx == NULL) {
1655                 DEBUG(0, ("talloc_init failed\n"));
1656                 return NULL;
1657         }
1658
1659         result = TALLOC_P(mem_ctx, struct pdb_search);
1660         if (result == NULL) {
1661                 DEBUG(0, ("talloc failed\n"));
1662                 return NULL;
1663         }
1664
1665         result->mem_ctx = mem_ctx;
1666         result->type = type;
1667         result->cache = NULL;
1668         result->num_entries = 0;
1669         result->cache_size = 0;
1670         result->search_ended = False;
1671
1672         /* Segfault appropriately if not initialized */
1673         result->next_entry = NULL;
1674         result->search_end = NULL;
1675
1676         return result;
1677 }
1678
1679 static void fill_displayentry(TALLOC_CTX *mem_ctx, uint32 rid,
1680                               uint16 acct_flags,
1681                               const char *account_name,
1682                               const char *fullname,
1683                               const char *description,
1684                               struct samr_displayentry *entry)
1685 {
1686         entry->rid = rid;
1687         entry->acct_flags = acct_flags;
1688
1689         if (account_name != NULL)
1690                 entry->account_name = talloc_strdup(mem_ctx, account_name);
1691         else
1692                 entry->account_name = "";
1693
1694         if (fullname != NULL)
1695                 entry->fullname = talloc_strdup(mem_ctx, fullname);
1696         else
1697                 entry->fullname = "";
1698
1699         if (description != NULL)
1700                 entry->description = talloc_strdup(mem_ctx, description);
1701         else
1702                 entry->description = "";
1703 }
1704
1705 static BOOL user_search_in_progress = False;
1706 struct user_search {
1707         uint16 acct_flags;
1708 };
1709
1710 static BOOL next_entry_users(struct pdb_search *s,
1711                              struct samr_displayentry *entry)
1712 {
1713         struct user_search *state = (struct user_search *)s->private_data;
1714         struct samu *user = NULL;
1715
1716  next:
1717         if ( !(user = samu_new( NULL )) ) {
1718                 DEBUG(0, ("next_entry_users: samu_new() failed!\n"));
1719                 return False;
1720         }
1721
1722         if (!pdb_getsampwent(user)) {
1723                 TALLOC_FREE(user);
1724                 return False;
1725         }
1726
1727         if ((state->acct_flags != 0) &&
1728             ((pdb_get_acct_ctrl(user) & state->acct_flags) == 0)) {
1729                 TALLOC_FREE(user);
1730                 goto next;
1731         }
1732
1733         fill_displayentry(s->mem_ctx, pdb_get_user_rid(user),
1734                           pdb_get_acct_ctrl(user), pdb_get_username(user),
1735                           pdb_get_fullname(user), pdb_get_acct_desc(user),
1736                           entry);
1737
1738         TALLOC_FREE(user);
1739         return True;
1740 }
1741
1742 static void search_end_users(struct pdb_search *search)
1743 {
1744         pdb_endsampwent();
1745         user_search_in_progress = False;
1746 }
1747
1748 static BOOL pdb_default_search_users(struct pdb_methods *methods,
1749                                      struct pdb_search *search,
1750                                      uint32 acct_flags)
1751 {
1752         struct user_search *state;
1753
1754         if (user_search_in_progress) {
1755                 DEBUG(1, ("user search in progress\n"));
1756                 return False;
1757         }
1758
1759         if (!pdb_setsampwent(False, acct_flags)) {
1760                 DEBUG(5, ("Could not start search\n"));
1761                 return False;
1762         }
1763
1764         user_search_in_progress = True;
1765
1766         state = TALLOC_P(search->mem_ctx, struct user_search);
1767         if (state == NULL) {
1768                 DEBUG(0, ("talloc failed\n"));
1769                 return False;
1770         }
1771
1772         state->acct_flags = acct_flags;
1773
1774         search->private_data = state;
1775         search->next_entry = next_entry_users;
1776         search->search_end = search_end_users;
1777         return True;
1778 }
1779
1780 struct group_search {
1781         GROUP_MAP *groups;
1782         size_t num_groups, current_group;
1783 };
1784
1785 static BOOL next_entry_groups(struct pdb_search *s,
1786                               struct samr_displayentry *entry)
1787 {
1788         struct group_search *state = (struct group_search *)s->private_data;
1789         uint32 rid;
1790         GROUP_MAP *map = &state->groups[state->current_group];
1791
1792         if (state->current_group == state->num_groups)
1793                 return False;
1794
1795         sid_peek_rid(&map->sid, &rid);
1796
1797         fill_displayentry(s->mem_ctx, rid, 0, map->nt_name, NULL, map->comment,
1798                           entry);
1799
1800         state->current_group += 1;
1801         return True;
1802 }
1803
1804 static void search_end_groups(struct pdb_search *search)
1805 {
1806         struct group_search *state =
1807                 (struct group_search *)search->private_data;
1808         SAFE_FREE(state->groups);
1809 }
1810
1811 static BOOL pdb_search_grouptype(struct pdb_search *search,
1812                                  const DOM_SID *sid, enum lsa_SidType type)
1813 {
1814         struct group_search *state;
1815
1816         state = TALLOC_P(search->mem_ctx, struct group_search);
1817         if (state == NULL) {
1818                 DEBUG(0, ("talloc failed\n"));
1819                 return False;
1820         }
1821
1822         if (!pdb_enum_group_mapping(sid, type, &state->groups, &state->num_groups,
1823                                     True)) {
1824                 DEBUG(0, ("Could not enum groups\n"));
1825                 return False;
1826         }
1827
1828         state->current_group = 0;
1829         search->private_data = state;
1830         search->next_entry = next_entry_groups;
1831         search->search_end = search_end_groups;
1832         return True;
1833 }
1834
1835 static BOOL pdb_default_search_groups(struct pdb_methods *methods,
1836                                       struct pdb_search *search)
1837 {
1838         return pdb_search_grouptype(search, get_global_sam_sid(), SID_NAME_DOM_GRP);
1839 }
1840
1841 static BOOL pdb_default_search_aliases(struct pdb_methods *methods,
1842                                        struct pdb_search *search,
1843                                        const DOM_SID *sid)
1844 {
1845
1846         return pdb_search_grouptype(search, sid, SID_NAME_ALIAS);
1847 }
1848
1849 static struct samr_displayentry *pdb_search_getentry(struct pdb_search *search,
1850                                                      uint32 idx)
1851 {
1852         if (idx < search->num_entries)
1853                 return &search->cache[idx];
1854
1855         if (search->search_ended)
1856                 return NULL;
1857
1858         while (idx >= search->num_entries) {
1859                 struct samr_displayentry entry;
1860
1861                 if (!search->next_entry(search, &entry)) {
1862                         search->search_end(search);
1863                         search->search_ended = True;
1864                         break;
1865                 }
1866
1867                 ADD_TO_LARGE_ARRAY(search->mem_ctx, struct samr_displayentry,
1868                                    entry, &search->cache, &search->num_entries,
1869                                    &search->cache_size);
1870         }
1871
1872         return (search->num_entries > idx) ? &search->cache[idx] : NULL;
1873 }
1874
1875 struct pdb_search *pdb_search_users(uint32 acct_flags)
1876 {
1877         struct pdb_methods *pdb = pdb_get_methods();
1878         struct pdb_search *result;
1879
1880         result = pdb_search_init(PDB_USER_SEARCH);
1881         if (result == NULL) {
1882                 return NULL;
1883         }
1884
1885         if (!pdb->search_users(pdb, result, acct_flags)) {
1886                 talloc_destroy(result->mem_ctx);
1887                 return NULL;
1888         }
1889         return result;
1890 }
1891
1892 struct pdb_search *pdb_search_groups(void)
1893 {
1894         struct pdb_methods *pdb = pdb_get_methods();
1895         struct pdb_search *result;
1896
1897         result = pdb_search_init(PDB_GROUP_SEARCH);
1898         if (result == NULL) {
1899                  return NULL;
1900         }
1901
1902         if (!pdb->search_groups(pdb, result)) {
1903                 talloc_destroy(result->mem_ctx);
1904                 return NULL;
1905         }
1906         return result;
1907 }
1908
1909 struct pdb_search *pdb_search_aliases(const DOM_SID *sid)
1910 {
1911         struct pdb_methods *pdb = pdb_get_methods();
1912         struct pdb_search *result;
1913
1914         if (pdb == NULL) return NULL;
1915
1916         result = pdb_search_init(PDB_ALIAS_SEARCH);
1917         if (result == NULL) return NULL;
1918
1919         if (!pdb->search_aliases(pdb, result, sid)) {
1920                 talloc_destroy(result->mem_ctx);
1921                 return NULL;
1922         }
1923         return result;
1924 }
1925
1926 uint32 pdb_search_entries(struct pdb_search *search,
1927                           uint32 start_idx, uint32 max_entries,
1928                           struct samr_displayentry **result)
1929 {
1930         struct samr_displayentry *end_entry;
1931         uint32 end_idx = start_idx+max_entries-1;
1932
1933         /* The first entry needs to be searched after the last. Otherwise the
1934          * first entry might have moved due to a realloc during the search for
1935          * the last entry. */
1936
1937         end_entry = pdb_search_getentry(search, end_idx);
1938         *result = pdb_search_getentry(search, start_idx);
1939
1940         if (end_entry != NULL)
1941                 return max_entries;
1942
1943         if (start_idx >= search->num_entries)
1944                 return 0;
1945
1946         return search->num_entries - start_idx;
1947 }
1948
1949 void pdb_search_destroy(struct pdb_search *search)
1950 {
1951         if (search == NULL)
1952                 return;
1953
1954         if (!search->search_ended)
1955                 search->search_end(search);
1956
1957         talloc_destroy(search->mem_ctx);
1958 }
1959
1960 /*******************************************************************
1961  Create a pdb_methods structure and initialize it with the default
1962  operations.  In this way a passdb module can simply implement
1963  the functionality it cares about.  However, normally this is done
1964  in groups of related functions.
1965 *******************************************************************/
1966
1967 NTSTATUS make_pdb_method( struct pdb_methods **methods )
1968 {
1969         /* allocate memory for the structure as its own talloc CTX */
1970
1971         if ( !(*methods = TALLOC_ZERO_P(NULL, struct pdb_methods) ) ) {
1972                 return NT_STATUS_NO_MEMORY;
1973         }
1974
1975         (*methods)->setsampwent = pdb_default_setsampwent;
1976         (*methods)->endsampwent = pdb_default_endsampwent;
1977         (*methods)->getsampwent = pdb_default_getsampwent;
1978         (*methods)->getsampwnam = pdb_default_getsampwnam;
1979         (*methods)->getsampwsid = pdb_default_getsampwsid;
1980         (*methods)->create_user = pdb_default_create_user;
1981         (*methods)->delete_user = pdb_default_delete_user;
1982         (*methods)->add_sam_account = pdb_default_add_sam_account;
1983         (*methods)->update_sam_account = pdb_default_update_sam_account;
1984         (*methods)->delete_sam_account = pdb_default_delete_sam_account;
1985         (*methods)->rename_sam_account = pdb_default_rename_sam_account;
1986         (*methods)->update_login_attempts = pdb_default_update_login_attempts;
1987
1988         (*methods)->getgrsid = pdb_default_getgrsid;
1989         (*methods)->getgrgid = pdb_default_getgrgid;
1990         (*methods)->getgrnam = pdb_default_getgrnam;
1991         (*methods)->create_dom_group = pdb_default_create_dom_group;
1992         (*methods)->delete_dom_group = pdb_default_delete_dom_group;
1993         (*methods)->add_group_mapping_entry = pdb_default_add_group_mapping_entry;
1994         (*methods)->update_group_mapping_entry = pdb_default_update_group_mapping_entry;
1995         (*methods)->delete_group_mapping_entry = pdb_default_delete_group_mapping_entry;
1996         (*methods)->enum_group_mapping = pdb_default_enum_group_mapping;
1997         (*methods)->enum_group_members = pdb_default_enum_group_members;
1998         (*methods)->enum_group_memberships = pdb_default_enum_group_memberships;
1999         (*methods)->set_unix_primary_group = pdb_default_set_unix_primary_group;
2000         (*methods)->add_groupmem = pdb_default_add_groupmem;
2001         (*methods)->del_groupmem = pdb_default_del_groupmem;
2002         (*methods)->find_alias = pdb_default_find_alias;
2003         (*methods)->create_alias = pdb_default_create_alias;
2004         (*methods)->delete_alias = pdb_default_delete_alias;
2005         (*methods)->get_aliasinfo = pdb_default_get_aliasinfo;
2006         (*methods)->set_aliasinfo = pdb_default_set_aliasinfo;
2007         (*methods)->add_aliasmem = pdb_default_add_aliasmem;
2008         (*methods)->del_aliasmem = pdb_default_del_aliasmem;
2009         (*methods)->enum_aliasmem = pdb_default_enum_aliasmem;
2010         (*methods)->enum_alias_memberships = pdb_default_alias_memberships;
2011         (*methods)->lookup_rids = pdb_default_lookup_rids;
2012         (*methods)->get_account_policy = pdb_default_get_account_policy;
2013         (*methods)->set_account_policy = pdb_default_set_account_policy;
2014         (*methods)->get_seq_num = pdb_default_get_seq_num;
2015         (*methods)->uid_to_rid = pdb_default_uid_to_rid;
2016         (*methods)->gid_to_sid = pdb_default_gid_to_sid;
2017         (*methods)->sid_to_id = pdb_default_sid_to_id;
2018
2019         (*methods)->search_users = pdb_default_search_users;
2020         (*methods)->search_groups = pdb_default_search_groups;
2021         (*methods)->search_aliases = pdb_default_search_aliases;
2022
2023         return NT_STATUS_OK;
2024 }