source3/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 3 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, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "secrets.h"
  25 #include "../librpc/gen_ndr/samr.h"
  26 #include "memcache.h"
  27 #include "nsswitch/winbind_client.h"
  28 #include "../libcli/security/security.h"
  29
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS DBGC_PASSDB
  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  * The event context for the passdb backend. I know this is a bad hack and yet
  99  * another static variable, but our pdb API is a global thing per
 100  * definition. The first use for this is the LDAP idle function, more might be
 101  * added later.
 102  *
 103  * I don't feel too bad about this static variable, it replaces the
 104  * smb_idle_event_list that used to exist in lib/module.c.  -- VL
 105  */
 106
 107 static struct event_context *pdb_event_ctx;
 108
 109 struct event_context *pdb_get_event_context(void)
 110 {
 111         return pdb_event_ctx;
 112 }
 113
 114 /******************************************************************
 115   Make a pdb_methods from scratch
 116  *******************************************************************/
 117
 118 NTSTATUS make_pdb_method_name(struct pdb_methods **methods, const char *selected)
 119 {
 120         char *module_name = smb_xstrdup(selected);
 121         char *module_location = NULL, *p;
 122         struct pdb_init_function_entry *entry;
 123         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 124
 125         lazy_initialize_passdb();
 126
 127         p = strchr(module_name, ':');
 128
 129         if (p) {
 130                 *p = 0;
 131                 module_location = p+1;
 132                 trim_char(module_location, ' ', ' ');
 133         }
 134
 135         trim_char(module_name, ' ', ' ');
 136
 137
 138         DEBUG(5,("Attempting to find a passdb backend to match %s (%s)\n", selected, module_name));
 139
 140         entry = pdb_find_backend_entry(module_name);
 141
 142         /* Try to find a module that contains this module */
 143         if (!entry) {
 144                 DEBUG(2,("No builtin backend found, trying to load plugin\n"));
 145                 if(NT_STATUS_IS_OK(smb_probe_module("pdb", module_name)) && !(entry = pdb_find_backend_entry(module_name))) {
 146                         DEBUG(0,("Plugin is available, but doesn't register passdb backend %s\n", module_name));
 147                         SAFE_FREE(module_name);
 148                         return NT_STATUS_UNSUCCESSFUL;
 149                 }
 150         }
 151
 152         /* No such backend found */
 153         if(!entry) {
 154                 DEBUG(0,("No builtin nor plugin backend for %s found\n", module_name));
 155                 SAFE_FREE(module_name);
 156                 return NT_STATUS_INVALID_PARAMETER;
 157         }
 158
 159         DEBUG(5,("Found pdb backend %s\n", module_name));
 160
 161         if ( !NT_STATUS_IS_OK( nt_status = entry->init(methods, module_location) ) ) {
 162                 DEBUG(0,("pdb backend %s did not correctly init (error was %s)\n",
 163                         selected, nt_errstr(nt_status)));
 164                 SAFE_FREE(module_name);
 165                 return nt_status;
 166         }
 167
 168         SAFE_FREE(module_name);
 169
 170         DEBUG(5,("pdb backend %s has a valid init\n", selected));
 171
 172         return nt_status;
 173 }
 174
 175 /******************************************************************
 176  Return an already initialized pdb_methods structure
 177 *******************************************************************/
 178
 179 static struct pdb_methods *pdb_get_methods_reload( bool reload )
 180 {
 181         static struct pdb_methods *pdb = NULL;
 182
 183         if ( pdb && reload ) {
 184                 pdb->free_private_data( &(pdb->private_data) );
 185                 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
 186                         char *msg = NULL;
 187                         if (asprintf(&msg, "pdb_get_methods_reload: "
 188                                         "failed to get pdb methods for backend %s\n",
 189                                         lp_passdb_backend()) > 0) {
 190                                 smb_panic(msg);
 191                         } else {
 192                                 smb_panic("pdb_get_methods_reload");
 193                         }
 194                 }
 195         }
 196
 197         if ( !pdb ) {
 198                 if ( !NT_STATUS_IS_OK( make_pdb_method_name( &pdb, lp_passdb_backend() ) ) ) {
 199                         char *msg = NULL;
 200                         if (asprintf(&msg, "pdb_get_methods_reload: "
 201                                         "failed to get pdb methods for backend %s\n",
 202                                         lp_passdb_backend()) > 0) {
 203                                 smb_panic(msg);
 204                         } else {
 205                                 smb_panic("pdb_get_methods_reload");
 206                         }
 207                 }
 208         }
 209
 210         return pdb;
 211 }
 212
 213 static struct pdb_methods *pdb_get_methods(void)
 214 {
 215         return pdb_get_methods_reload(False);
 216 }
 217
 218 struct pdb_domain_info *pdb_get_domain_info(TALLOC_CTX *mem_ctx)
 219 {
 220         struct pdb_methods *pdb = pdb_get_methods();
 221         return pdb->get_domain_info(pdb, mem_ctx);
 222 }
 223
 224 /**
 225  * @brief Check if the user account has been locked out and try to unlock it.
 226  *
 227  * If the user has been automatically locked out and a lockout duration is set,
 228  * then check if we can unlock the account and reset the bad password values.
 229  *
 230  * @param[in]  sampass  The sam user to check.
 231  *
 232  * @return              True if the function was successfull, false on an error.
 233  */
 234 static bool pdb_try_account_unlock(struct samu *sampass)
 235 {
 236         uint32_t acb_info = pdb_get_acct_ctrl(sampass);
 237
 238         if (acb_info & (ACB_NORMAL|ACB_AUTOLOCK)) {
 239                 uint32_t lockout_duration;
 240                 time_t bad_password_time;
 241                 time_t now = time(NULL);
 242                 bool ok;
 243
 244                 ok = pdb_get_account_policy(PDB_POLICY_LOCK_ACCOUNT_DURATION,
 245                                             &lockout_duration);
 246                 if (!ok) {
 247                         DEBUG(0, ("pdb_try_account_unlock: "
 248                                   "pdb_get_account_policy failed.\n"));
 249                         return false;
 250                 }
 251
 252                 if (lockout_duration == (uint32_t) -1 ||
 253                     lockout_duration == 0) {
 254                         DEBUG(9, ("pdb_try_account_unlock: No reset duration, "
 255                                   "can't reset autolock\n"));
 256                         return false;
 257                 }
 258                 lockout_duration *= 60;
 259
 260                 bad_password_time = pdb_get_bad_password_time(sampass);
 261                 if (bad_password_time == (time_t) 0) {
 262                         DEBUG(2, ("pdb_try_account_unlock: Account %s "
 263                                   "administratively locked out "
 264                                   "with no bad password "
 265                                   "time. Leaving locked out.\n",
 266                                   pdb_get_username(sampass)));
 267                         return true;
 268                 }
 269
 270                 if ((bad_password_time +
 271                      convert_uint32_t_to_time_t(lockout_duration)) < now) {
 272                         NTSTATUS status;
 273
 274                         pdb_set_acct_ctrl(sampass, acb_info & ~ACB_AUTOLOCK,
 275                                           PDB_CHANGED);
 276                         pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
 277                         pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
 278
 279                         become_root();
 280                         status = pdb_update_sam_account(sampass);
 281                         unbecome_root();
 282                         if (!NT_STATUS_IS_OK(status)) {
 283                                 DEBUG(0, ("_samr_OpenUser: Couldn't "
 284                                           "update account %s - %s\n",
 285                                           pdb_get_username(sampass),
 286                                           nt_errstr(status)));
 287                                 return false;
 288                         }
 289                 }
 290         }
 291
 292         return true;
 293 }
 294
 295 /**
 296  * @brief Get a sam user structure by the given username.
 297  *
 298  * This functions also checks if the account has been automatically locked out
 299  * and unlocks it if a lockout duration time has been defined and the time has
 300  * elapsed.
 301  *
 302  * @param[in]  sam_acct  The sam user structure to fill.
 303  *
 304  * @param[in]  username  The username to look for.
 305  *
 306  * @return               True on success, false on error.
 307  */
 308 bool pdb_getsampwnam(struct samu *sam_acct, const char *username)
 309 {
 310         struct pdb_methods *pdb = pdb_get_methods();
 311         struct samu *for_cache;
 312         const struct dom_sid *user_sid;
 313         NTSTATUS status;
 314         bool ok;
 315
 316         status = pdb->getsampwnam(pdb, sam_acct, username);
 317         if (!NT_STATUS_IS_OK(status)) {
 318                 return false;
 319         }
 320
 321         ok = pdb_try_account_unlock(sam_acct);
 322         if (!ok) {
 323                 DEBUG(1, ("pdb_getsampwnam: Failed to unlock account %s\n",
 324                           username));
 325         }
 326
 327         for_cache = samu_new(NULL);
 328         if (for_cache == NULL) {
 329                 return False;
 330         }
 331
 332         if (!pdb_copy_sam_account(for_cache, sam_acct)) {
 333                 TALLOC_FREE(for_cache);
 334                 return False;
 335         }
 336
 337         user_sid = pdb_get_user_sid(for_cache);
 338
 339         memcache_add_talloc(NULL, PDB_GETPWSID_CACHE,
 340                             data_blob_const(user_sid, sizeof(*user_sid)),
 341                             &for_cache);
 342
 343         return True;
 344 }
 345
 346 /**********************************************************************
 347 **********************************************************************/
 348
 349 static bool guest_user_info( struct samu *user )
 350 {
 351         struct passwd *pwd;
 352         NTSTATUS result;
 353         const char *guestname = lp_guestaccount();
 354
 355         pwd = Get_Pwnam_alloc(talloc_tos(), guestname);
 356         if (pwd == NULL) {
 357                 DEBUG(0,("guest_user_info: Unable to locate guest account [%s]!\n",
 358                         guestname));
 359                 return False;
 360         }
 361
 362         result = samu_set_unix(user, pwd );
 363
 364         TALLOC_FREE( pwd );
 365
 366         return NT_STATUS_IS_OK( result );
 367 }
 368
 369 /**
 370  * @brief Get a sam user structure by the given username.
 371  *
 372  * This functions also checks if the account has been automatically locked out
 373  * and unlocks it if a lockout duration time has been defined and the time has
 374  * elapsed.
 375  *
 376  *
 377  * @param[in]  sam_acct  The sam user structure to fill.
 378  *
 379  * @param[in]  sid       The user SDI to look up.
 380  *
 381  * @return               True on success, false on error.
 382  */
 383 bool pdb_getsampwsid(struct samu *sam_acct, const struct dom_sid *sid)
 384 {
 385         struct pdb_methods *pdb = pdb_get_methods();
 386         uint32_t rid;
 387         void *cache_data;
 388         bool ok = false;
 389
 390         /* hard code the Guest RID of 501 */
 391
 392         if ( !sid_peek_check_rid( get_global_sam_sid(), sid, &rid ) )
 393                 return False;
 394
 395         if ( rid == DOMAIN_RID_GUEST ) {
 396                 DEBUG(6,("pdb_getsampwsid: Building guest account\n"));
 397                 return guest_user_info( sam_acct );
 398         }
 399
 400         /* check the cache first */
 401
 402         cache_data = memcache_lookup_talloc(
 403                 NULL, PDB_GETPWSID_CACHE, data_blob_const(sid, sizeof(*sid)));
 404
 405         if (cache_data != NULL) {
 406                 struct samu *cache_copy = talloc_get_type_abort(
 407                         cache_data, struct samu);
 408
 409                 ok = pdb_copy_sam_account(sam_acct, cache_copy);
 410         } else {
 411                 ok = NT_STATUS_IS_OK(pdb->getsampwsid(pdb, sam_acct, sid));
 412         }
 413
 414         if (!ok) {
 415                 return false;
 416         }
 417
 418         ok = pdb_try_account_unlock(sam_acct);
 419         if (!ok) {
 420                 DEBUG(1, ("pdb_getsampwsid: Failed to unlock account %s\n",
 421                           sam_acct->username));
 422         }
 423
 424         return true;
 425 }
 426
 427 static NTSTATUS pdb_default_create_user(struct pdb_methods *methods,
 428                                         TALLOC_CTX *tmp_ctx, const char *name,
 429                                         uint32_t acb_info, uint32_t *rid)
 430 {
 431         struct samu *sam_pass;
 432         NTSTATUS status;
 433         struct passwd *pwd;
 434
 435         if ((sam_pass = samu_new(tmp_ctx)) == NULL) {
 436                 return NT_STATUS_NO_MEMORY;
 437         }
 438
 439         if ( !(pwd = Get_Pwnam_alloc(tmp_ctx, name)) ) {
 440                 char *add_script = NULL;
 441                 int add_ret;
 442                 fstring name2;
 443
 444                 if ((acb_info & ACB_NORMAL) && name[strlen(name)-1] != '$') {
 445                         add_script = talloc_strdup(tmp_ctx,
 446                                         lp_adduser_script());
 447                 } else {
 448                         add_script = talloc_strdup(tmp_ctx,
 449                                         lp_addmachine_script());
 450                 }
 451
 452                 if (!add_script || add_script[0] == '\0') {
 453                         DEBUG(3, ("Could not find user %s and no add script "
 454                                   "defined\n", name));
 455                         return NT_STATUS_NO_SUCH_USER;
 456                 }
 457
 458                 /* lowercase the username before creating the Unix account for
 459                    compatibility with previous Samba releases */
 460                 fstrcpy( name2, name );
 461                 strlower_m( name2 );
 462                 add_script = talloc_all_string_sub(tmp_ctx,
 463                                         add_script,
 464                                         "%u",
 465                                         name2);
 466                 if (!add_script) {
 467                         return NT_STATUS_NO_MEMORY;
 468                 }
 469                 add_ret = smbrun(add_script,NULL);
 470                 DEBUG(add_ret ? 0 : 3, ("_samr_create_user: Running the command `%s' gave %d\n",
 471                                         add_script, add_ret));
 472                 if (add_ret == 0) {
 473                         smb_nscd_flush_user_cache();
 474                 }
 475
 476                 flush_pwnam_cache();
 477
 478                 pwd = Get_Pwnam_alloc(tmp_ctx, name);
 479         }
 480
 481         /* we have a valid SID coming out of this call */
 482
 483         status = samu_alloc_rid_unix( sam_pass, pwd );
 484
 485         TALLOC_FREE( pwd );
 486
 487         if (!NT_STATUS_IS_OK(status)) {
 488                 DEBUG(3, ("pdb_default_create_user: failed to create a new user structure: %s\n", nt_errstr(status)));
 489                 return status;
 490         }
 491
 492         if (!sid_peek_check_rid(get_global_sam_sid(),
 493                                 pdb_get_user_sid(sam_pass), rid)) {
 494                 DEBUG(0, ("Could not get RID of fresh user\n"));
 495                 return NT_STATUS_INTERNAL_ERROR;
 496         }
 497
 498         /* Use the username case specified in the original request */
 499
 500         pdb_set_username( sam_pass, name, PDB_SET );
 501
 502         /* Disable the account on creation, it does not have a reasonable password yet. */
 503
 504         acb_info |= ACB_DISABLED;
 505
 506         pdb_set_acct_ctrl(sam_pass, acb_info, PDB_CHANGED);
 507
 508         status = pdb_add_sam_account(sam_pass);
 509
 510         TALLOC_FREE(sam_pass);
 511
 512         return status;
 513 }
 514
 515 NTSTATUS pdb_create_user(TALLOC_CTX *mem_ctx, const char *name, uint32_t flags,
 516                          uint32_t *rid)
 517 {
 518         struct pdb_methods *pdb = pdb_get_methods();
 519         return pdb->create_user(pdb, mem_ctx, name, flags, rid);
 520 }
 521
 522 /****************************************************************************
 523  Delete a UNIX user on demand.
 524 ****************************************************************************/
 525
 526 static int smb_delete_user(const char *unix_user)
 527 {
 528         char *del_script = NULL;
 529         int ret;
 530
 531         /* safety check */
 532
 533         if ( strequal( unix_user, "root" ) ) {
 534                 DEBUG(0,("smb_delete_user: Refusing to delete local system root account!\n"));
 535                 return -1;
 536         }
 537
 538         del_script = talloc_strdup(talloc_tos(), lp_deluser_script());
 539         if (!del_script || !*del_script) {
 540                 return -1;
 541         }
 542         del_script = talloc_all_string_sub(talloc_tos(),
 543                                 del_script,
 544                                 "%u",
 545                                 unix_user);
 546         if (!del_script) {
 547                 return -1;
 548         }
 549         ret = smbrun(del_script,NULL);
 550         flush_pwnam_cache();
 551         if (ret == 0) {
 552                 smb_nscd_flush_user_cache();
 553         }
 554         DEBUG(ret ? 0 : 3,("smb_delete_user: Running the command `%s' gave %d\n",del_script,ret));
 555
 556         return ret;
 557 }
 558
 559 static NTSTATUS pdb_default_delete_user(struct pdb_methods *methods,
 560                                         TALLOC_CTX *mem_ctx,
 561                                         struct samu *sam_acct)
 562 {
 563         NTSTATUS status;
 564         fstring username;
 565
 566         status = pdb_delete_sam_account(sam_acct);
 567         if (!NT_STATUS_IS_OK(status)) {
 568                 return status;
 569         }
 570
 571         /*
 572          * Now delete the unix side ....
 573          * note: we don't check if the delete really happened as the script is
 574          * not necessary present and maybe the sysadmin doesn't want to delete
 575          * the unix side
 576          */
 577
 578         /* always lower case the username before handing it off to
 579            external scripts */
 580
 581         fstrcpy( username, pdb_get_username(sam_acct) );
 582         strlower_m( username );
 583
 584         smb_delete_user( username );
 585
 586         return status;
 587 }
 588
 589 NTSTATUS pdb_delete_user(TALLOC_CTX *mem_ctx, struct samu *sam_acct)
 590 {
 591         struct pdb_methods *pdb = pdb_get_methods();
 592         uid_t uid = -1;
 593
 594         /* sanity check to make sure we don't delete root */
 595
 596         if ( !sid_to_uid( pdb_get_user_sid(sam_acct), &uid ) ) {
 597                 return NT_STATUS_NO_SUCH_USER;
 598         }
 599
 600         if ( uid == 0 ) {
 601                 return NT_STATUS_ACCESS_DENIED;
 602         }
 603
 604         return pdb->delete_user(pdb, mem_ctx, sam_acct);
 605 }
 606
 607 NTSTATUS pdb_add_sam_account(struct samu *sam_acct)
 608 {
 609         struct pdb_methods *pdb = pdb_get_methods();
 610         return pdb->add_sam_account(pdb, sam_acct);
 611 }
 612
 613 NTSTATUS pdb_update_sam_account(struct samu *sam_acct)
 614 {
 615         struct pdb_methods *pdb = pdb_get_methods();
 616
 617         memcache_flush(NULL, PDB_GETPWSID_CACHE);
 618
 619         return pdb->update_sam_account(pdb, sam_acct);
 620 }
 621
 622 NTSTATUS pdb_delete_sam_account(struct samu *sam_acct)
 623 {
 624         struct pdb_methods *pdb = pdb_get_methods();
 625
 626         memcache_flush(NULL, PDB_GETPWSID_CACHE);
 627
 628         return pdb->delete_sam_account(pdb, sam_acct);
 629 }
 630
 631 NTSTATUS pdb_rename_sam_account(struct samu *oldname, const char *newname)
 632 {
 633         struct pdb_methods *pdb = pdb_get_methods();
 634         uid_t uid;
 635         NTSTATUS status;
 636
 637         memcache_flush(NULL, PDB_GETPWSID_CACHE);
 638
 639         /* sanity check to make sure we don't rename root */
 640
 641         if ( !sid_to_uid( pdb_get_user_sid(oldname), &uid ) ) {
 642                 return NT_STATUS_NO_SUCH_USER;
 643         }
 644
 645         if ( uid == 0 ) {
 646                 return NT_STATUS_ACCESS_DENIED;
 647         }
 648
 649         status = pdb->rename_sam_account(pdb, oldname, newname);
 650
 651         /* always flush the cache here just to be safe */
 652         flush_pwnam_cache();
 653
 654         return status;
 655 }
 656
 657 NTSTATUS pdb_update_login_attempts(struct samu *sam_acct, bool success)
 658 {
 659         struct pdb_methods *pdb = pdb_get_methods();
 660         return pdb->update_login_attempts(pdb, sam_acct, success);
 661 }
 662
 663 bool pdb_getgrsid(GROUP_MAP *map, struct dom_sid sid)
 664 {
 665         struct pdb_methods *pdb = pdb_get_methods();
 666         return NT_STATUS_IS_OK(pdb->getgrsid(pdb, map, sid));
 667 }
 668
 669 bool pdb_getgrgid(GROUP_MAP *map, gid_t gid)
 670 {
 671         struct pdb_methods *pdb = pdb_get_methods();
 672         return NT_STATUS_IS_OK(pdb->getgrgid(pdb, map, gid));
 673 }
 674
 675 bool pdb_getgrnam(GROUP_MAP *map, const char *name)
 676 {
 677         struct pdb_methods *pdb = pdb_get_methods();
 678         return NT_STATUS_IS_OK(pdb->getgrnam(pdb, map, name));
 679 }
 680
 681 static NTSTATUS pdb_default_create_dom_group(struct pdb_methods *methods,
 682                                              TALLOC_CTX *mem_ctx,
 683                                              const char *name,
 684                                              uint32_t *rid)
 685 {
 686         struct dom_sid group_sid;
 687         struct group *grp;
 688         fstring tmp;
 689
 690         grp = getgrnam(name);
 691
 692         if (grp == NULL) {
 693                 gid_t gid;
 694
 695                 if (smb_create_group(name, &gid) != 0) {
 696                         return NT_STATUS_ACCESS_DENIED;
 697                 }
 698
 699                 grp = getgrgid(gid);
 700         }
 701
 702         if (grp == NULL) {
 703                 return NT_STATUS_ACCESS_DENIED;
 704         }
 705
 706         if (pdb_capabilities() & PDB_CAP_STORE_RIDS) {
 707                 if (!pdb_new_rid(rid)) {
 708                         return NT_STATUS_ACCESS_DENIED;
 709                 }
 710         } else {
 711                 *rid = algorithmic_pdb_gid_to_group_rid( grp->gr_gid );
 712         }
 713
 714         sid_compose(&group_sid, get_global_sam_sid(), *rid);
 715
 716         return add_initial_entry(grp->gr_gid, sid_to_fstring(tmp, &group_sid),
 717                                  SID_NAME_DOM_GRP, name, NULL);
 718 }
 719
 720 NTSTATUS pdb_create_dom_group(TALLOC_CTX *mem_ctx, const char *name,
 721                               uint32_t *rid)
 722 {
 723         struct pdb_methods *pdb = pdb_get_methods();
 724         return pdb->create_dom_group(pdb, mem_ctx, name, rid);
 725 }
 726
 727 static NTSTATUS pdb_default_delete_dom_group(struct pdb_methods *methods,
 728                                              TALLOC_CTX *mem_ctx,
 729                                              uint32_t rid)
 730 {
 731         struct dom_sid group_sid;
 732         GROUP_MAP map;
 733         NTSTATUS status;
 734         struct group *grp;
 735         const char *grp_name;
 736
 737         /* coverity */
 738         map.gid = (gid_t) -1;
 739
 740         sid_compose(&group_sid, get_global_sam_sid(), rid);
 741
 742         if (!get_domain_group_from_sid(group_sid, &map)) {
 743                 DEBUG(10, ("Could not find group for rid %d\n", rid));
 744                 return NT_STATUS_NO_SUCH_GROUP;
 745         }
 746
 747         /* We need the group name for the smb_delete_group later on */
 748
 749         if (map.gid == (gid_t)-1) {
 750                 return NT_STATUS_NO_SUCH_GROUP;
 751         }
 752
 753         grp = getgrgid(map.gid);
 754         if (grp == NULL) {
 755                 return NT_STATUS_NO_SUCH_GROUP;
 756         }
 757
 758         /* Copy the name, no idea what pdb_delete_group_mapping_entry does.. */
 759
 760         grp_name = talloc_strdup(mem_ctx, grp->gr_name);
 761         if (grp_name == NULL) {
 762                 return NT_STATUS_NO_MEMORY;
 763         }
 764
 765         status = pdb_delete_group_mapping_entry(group_sid);
 766
 767         if (!NT_STATUS_IS_OK(status)) {
 768                 return status;
 769         }
 770
 771         /* Don't check the result of smb_delete_group */
 772
 773         smb_delete_group(grp_name);
 774
 775         return NT_STATUS_OK;
 776 }
 777
 778 NTSTATUS pdb_delete_dom_group(TALLOC_CTX *mem_ctx, uint32_t rid)
 779 {
 780         struct pdb_methods *pdb = pdb_get_methods();
 781         return pdb->delete_dom_group(pdb, mem_ctx, rid);
 782 }
 783
 784 NTSTATUS pdb_add_group_mapping_entry(GROUP_MAP *map)
 785 {
 786         struct pdb_methods *pdb = pdb_get_methods();
 787         return pdb->add_group_mapping_entry(pdb, map);
 788 }
 789
 790 NTSTATUS pdb_update_group_mapping_entry(GROUP_MAP *map)
 791 {
 792         struct pdb_methods *pdb = pdb_get_methods();
 793         return pdb->update_group_mapping_entry(pdb, map);
 794 }
 795
 796 NTSTATUS pdb_delete_group_mapping_entry(struct dom_sid sid)
 797 {
 798         struct pdb_methods *pdb = pdb_get_methods();
 799         return pdb->delete_group_mapping_entry(pdb, sid);
 800 }
 801
 802 bool pdb_enum_group_mapping(const struct dom_sid *sid, enum lsa_SidType sid_name_use, GROUP_MAP **pp_rmap,
 803                             size_t *p_num_entries, bool unix_only)
 804 {
 805         struct pdb_methods *pdb = pdb_get_methods();
 806         return NT_STATUS_IS_OK(pdb-> enum_group_mapping(pdb, sid, sid_name_use,
 807                 pp_rmap, p_num_entries, unix_only));
 808 }
 809
 810 NTSTATUS pdb_enum_group_members(TALLOC_CTX *mem_ctx,
 811                                 const struct dom_sid *sid,
 812                                 uint32_t **pp_member_rids,
 813                                 size_t *p_num_members)
 814 {
 815         struct pdb_methods *pdb = pdb_get_methods();
 816         NTSTATUS result;
 817
 818         result = pdb->enum_group_members(pdb, mem_ctx,
 819                         sid, pp_member_rids, p_num_members);
 820
 821         /* special check for rid 513 */
 822
 823         if ( !NT_STATUS_IS_OK( result ) ) {
 824                 uint32_t rid;
 825
 826                 sid_peek_rid( sid, &rid );
 827
 828                 if ( rid == DOMAIN_RID_USERS ) {
 829                         *p_num_members = 0;
 830                         *pp_member_rids = NULL;
 831
 832                         return NT_STATUS_OK;
 833                 }
 834         }
 835
 836         return result;
 837 }
 838
 839 NTSTATUS pdb_enum_group_memberships(TALLOC_CTX *mem_ctx, struct samu *user,
 840                                     struct dom_sid **pp_sids, gid_t **pp_gids,
 841                                     size_t *p_num_groups)
 842 {
 843         struct pdb_methods *pdb = pdb_get_methods();
 844         return pdb->enum_group_memberships(
 845                 pdb, mem_ctx, user,
 846                 pp_sids, pp_gids, p_num_groups);
 847 }
 848
 849 static NTSTATUS pdb_default_set_unix_primary_group(struct pdb_methods *methods,
 850                                                    TALLOC_CTX *mem_ctx,
 851                                                    struct samu *sampass)
 852 {
 853         struct group *grp;
 854         gid_t gid;
 855
 856         if (!sid_to_gid(pdb_get_group_sid(sampass), &gid) ||
 857             (grp = getgrgid(gid)) == NULL) {
 858                 return NT_STATUS_INVALID_PRIMARY_GROUP;
 859         }
 860
 861         if (smb_set_primary_group(grp->gr_name,
 862                                   pdb_get_username(sampass)) != 0) {
 863                 return NT_STATUS_ACCESS_DENIED;
 864         }
 865
 866         return NT_STATUS_OK;
 867 }
 868
 869 NTSTATUS pdb_set_unix_primary_group(TALLOC_CTX *mem_ctx, struct samu *user)
 870 {
 871         struct pdb_methods *pdb = pdb_get_methods();
 872         return pdb->set_unix_primary_group(pdb, mem_ctx, user);
 873 }
 874
 875 /*
 876  * Helper function to see whether a user is in a group. We can't use
 877  * user_in_group_sid here because this creates dependencies only smbd can
 878  * fulfil.
 879  */
 880
 881 static bool pdb_user_in_group(TALLOC_CTX *mem_ctx, struct samu *account,
 882                               const struct dom_sid *group_sid)
 883 {
 884         struct dom_sid *sids;
 885         gid_t *gids;
 886         size_t i, num_groups;
 887
 888         if (!NT_STATUS_IS_OK(pdb_enum_group_memberships(mem_ctx, account,
 889                                                         &sids, &gids,
 890                                                         &num_groups))) {
 891                 return False;
 892         }
 893
 894         for (i=0; i<num_groups; i++) {
 895                 if (dom_sid_equal(group_sid, &sids[i])) {
 896                         return True;
 897                 }
 898         }
 899         return False;
 900 }
 901
 902 static NTSTATUS pdb_default_add_groupmem(struct pdb_methods *methods,
 903                                          TALLOC_CTX *mem_ctx,
 904                                          uint32_t group_rid,
 905                                          uint32_t member_rid)
 906 {
 907         struct dom_sid group_sid, member_sid;
 908         struct samu *account = NULL;
 909         GROUP_MAP map;
 910         struct group *grp;
 911         struct passwd *pwd;
 912         const char *group_name;
 913         uid_t uid;
 914
 915         /* coverity */
 916         map.gid = (gid_t) -1;
 917
 918         sid_compose(&group_sid, get_global_sam_sid(), group_rid);
 919         sid_compose(&member_sid, get_global_sam_sid(), member_rid);
 920
 921         if (!get_domain_group_from_sid(group_sid, &map) ||
 922             (map.gid == (gid_t)-1) ||
 923             ((grp = getgrgid(map.gid)) == NULL)) {
 924                 return NT_STATUS_NO_SUCH_GROUP;
 925         }
 926
 927         group_name = talloc_strdup(mem_ctx, grp->gr_name);
 928         if (group_name == NULL) {
 929                 return NT_STATUS_NO_MEMORY;
 930         }
 931
 932         if ( !(account = samu_new( NULL )) ) {
 933                 return NT_STATUS_NO_MEMORY;
 934         }
 935
 936         if (!pdb_getsampwsid(account, &member_sid) ||
 937             !sid_to_uid(&member_sid, &uid) ||
 938             ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
 939                 return NT_STATUS_NO_SUCH_USER;
 940         }
 941
 942         if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
 943                 return NT_STATUS_MEMBER_IN_GROUP;
 944         }
 945
 946         /*
 947          * ok, the group exist, the user exist, the user is not in the group,
 948          * we can (finally) add it to the group !
 949          */
 950
 951         smb_add_user_group(group_name, pwd->pw_name);
 952
 953         if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
 954                 return NT_STATUS_ACCESS_DENIED;
 955         }
 956
 957         return NT_STATUS_OK;
 958 }
 959
 960 NTSTATUS pdb_add_groupmem(TALLOC_CTX *mem_ctx, uint32_t group_rid,
 961                           uint32_t member_rid)
 962 {
 963         struct pdb_methods *pdb = pdb_get_methods();
 964         return pdb->add_groupmem(pdb, mem_ctx, group_rid, member_rid);
 965 }
 966
 967 static NTSTATUS pdb_default_del_groupmem(struct pdb_methods *methods,
 968                                          TALLOC_CTX *mem_ctx,
 969                                          uint32_t group_rid,
 970                                          uint32_t member_rid)
 971 {
 972         struct dom_sid group_sid, member_sid;
 973         struct samu *account = NULL;
 974         GROUP_MAP map;
 975         struct group *grp;
 976         struct passwd *pwd;
 977         const char *group_name;
 978         uid_t uid;
 979
 980         sid_compose(&group_sid, get_global_sam_sid(), group_rid);
 981         sid_compose(&member_sid, get_global_sam_sid(), member_rid);
 982
 983         if (!get_domain_group_from_sid(group_sid, &map) ||
 984             (map.gid == (gid_t)-1) ||
 985             ((grp = getgrgid(map.gid)) == NULL)) {
 986                 return NT_STATUS_NO_SUCH_GROUP;
 987         }
 988
 989         group_name = talloc_strdup(mem_ctx, grp->gr_name);
 990         if (group_name == NULL) {
 991                 return NT_STATUS_NO_MEMORY;
 992         }
 993
 994         if ( !(account = samu_new( NULL )) ) {
 995                 return NT_STATUS_NO_MEMORY;
 996         }
 997
 998         if (!pdb_getsampwsid(account, &member_sid) ||
 999             !sid_to_uid(&member_sid, &uid) ||
1000             ((pwd = getpwuid_alloc(mem_ctx, uid)) == NULL)) {
1001                 return NT_STATUS_NO_SUCH_USER;
1002         }
1003
1004         if (!pdb_user_in_group(mem_ctx, account, &group_sid)) {
1005                 return NT_STATUS_MEMBER_NOT_IN_GROUP;
1006         }
1007
1008         /*
1009          * ok, the group exist, the user exist, the user is in the group,
1010          * we can (finally) delete it from the group!
1011          */
1012
1013         smb_delete_user_group(group_name, pwd->pw_name);
1014
1015         if (pdb_user_in_group(mem_ctx, account, &group_sid)) {
1016                 return NT_STATUS_ACCESS_DENIED;
1017         }
1018
1019         return NT_STATUS_OK;
1020 }
1021
1022 NTSTATUS pdb_del_groupmem(TALLOC_CTX *mem_ctx, uint32_t group_rid,
1023                           uint32_t member_rid)
1024 {
1025         struct pdb_methods *pdb = pdb_get_methods();
1026         return pdb->del_groupmem(pdb, mem_ctx, group_rid, member_rid);
1027 }
1028
1029 NTSTATUS pdb_create_alias(const char *name, uint32_t *rid)
1030 {
1031         struct pdb_methods *pdb = pdb_get_methods();
1032         return pdb->create_alias(pdb, name, rid);
1033 }
1034
1035 NTSTATUS pdb_delete_alias(const struct dom_sid *sid)
1036 {
1037         struct pdb_methods *pdb = pdb_get_methods();
1038         return pdb->delete_alias(pdb, sid);
1039 }
1040
1041 NTSTATUS pdb_get_aliasinfo(const struct dom_sid *sid, struct acct_info *info)
1042 {
1043         struct pdb_methods *pdb = pdb_get_methods();
1044         return pdb->get_aliasinfo(pdb, sid, info);
1045 }
1046
1047 NTSTATUS pdb_set_aliasinfo(const struct dom_sid *sid, struct acct_info *info)
1048 {
1049         struct pdb_methods *pdb = pdb_get_methods();
1050         return pdb->set_aliasinfo(pdb, sid, info);
1051 }
1052
1053 NTSTATUS pdb_add_aliasmem(const struct dom_sid *alias, const struct dom_sid *member)
1054 {
1055         struct pdb_methods *pdb = pdb_get_methods();
1056         return pdb->add_aliasmem(pdb, alias, member);
1057 }
1058
1059 NTSTATUS pdb_del_aliasmem(const struct dom_sid *alias, const struct dom_sid *member)
1060 {
1061         struct pdb_methods *pdb = pdb_get_methods();
1062         return pdb->del_aliasmem(pdb, alias, member);
1063 }
1064
1065 NTSTATUS pdb_enum_aliasmem(const struct dom_sid *alias, TALLOC_CTX *mem_ctx,
1066                            struct dom_sid **pp_members, size_t *p_num_members)
1067 {
1068         struct pdb_methods *pdb = pdb_get_methods();
1069         return pdb->enum_aliasmem(pdb, alias, mem_ctx, pp_members,
1070                                   p_num_members);
1071 }
1072
1073 NTSTATUS pdb_enum_alias_memberships(TALLOC_CTX *mem_ctx,
1074                                     const struct dom_sid *domain_sid,
1075                                     const struct dom_sid *members, size_t num_members,
1076                                     uint32_t **pp_alias_rids,
1077                                     size_t *p_num_alias_rids)
1078 {
1079         struct pdb_methods *pdb = pdb_get_methods();
1080         return pdb->enum_alias_memberships(pdb, mem_ctx,
1081                                                        domain_sid,
1082                                                        members, num_members,
1083                                                        pp_alias_rids,
1084                                                        p_num_alias_rids);
1085 }
1086
1087 NTSTATUS pdb_lookup_rids(const struct dom_sid *domain_sid,
1088                          int num_rids,
1089                          uint32_t *rids,
1090                          const char **names,
1091                          enum lsa_SidType *attrs)
1092 {
1093         struct pdb_methods *pdb = pdb_get_methods();
1094         return pdb->lookup_rids(pdb, domain_sid, num_rids, rids, names, attrs);
1095 }
1096
1097 /*
1098  * NOTE: pdb_lookup_names is currently (2007-01-12) not used anywhere
1099  *       in the samba code.
1100  *       Unlike _lsa_lookup_sids and _samr_lookup_rids, which eventually
1101  *       also ask pdb_lookup_rids, thus looking up a bunch of rids at a time,
1102  *       the pdb_ calls _lsa_lookup_names and _samr_lookup_names come
1103  *       down to are pdb_getsampwnam and pdb_getgrnam instead of
1104  *       pdb_lookup_names.
1105  *       But in principle, it the call belongs to the API and might get
1106  *       used in this context some day.
1107  */
1108 #if 0
1109 NTSTATUS pdb_lookup_names(const struct dom_sid *domain_sid,
1110                           int num_names,
1111                           const char **names,
1112                           uint32_t *rids,
1113                           enum lsa_SidType *attrs)
1114 {
1115         struct pdb_methods *pdb = pdb_get_methods();
1116         return pdb->lookup_names(pdb, domain_sid, num_names, names, rids, attrs);
1117 }
1118 #endif
1119
1120 bool pdb_get_account_policy(enum pdb_policy_type type, uint32_t *value)
1121 {
1122         struct pdb_methods *pdb = pdb_get_methods();
1123         NTSTATUS status;
1124
1125         become_root();
1126         status = pdb->get_account_policy(pdb, type, value);
1127         unbecome_root();
1128
1129         return NT_STATUS_IS_OK(status);
1130 }
1131
1132 bool pdb_set_account_policy(enum pdb_policy_type type, uint32_t value)
1133 {
1134         struct pdb_methods *pdb = pdb_get_methods();
1135         NTSTATUS status;
1136
1137         become_root();
1138         status = pdb->set_account_policy(pdb, type, value);
1139         unbecome_root();
1140
1141         return NT_STATUS_IS_OK(status);
1142 }
1143
1144 bool pdb_get_seq_num(time_t *seq_num)
1145 {
1146         struct pdb_methods *pdb = pdb_get_methods();
1147         return NT_STATUS_IS_OK(pdb->get_seq_num(pdb, seq_num));
1148 }
1149
1150 bool pdb_uid_to_sid(uid_t uid, struct dom_sid *sid)
1151 {
1152         struct pdb_methods *pdb = pdb_get_methods();
1153         return pdb->uid_to_sid(pdb, uid, sid);
1154 }
1155
1156 bool pdb_gid_to_sid(gid_t gid, struct dom_sid *sid)
1157 {
1158         struct pdb_methods *pdb = pdb_get_methods();
1159         return pdb->gid_to_sid(pdb, gid, sid);
1160 }
1161
1162 bool pdb_sid_to_id(const struct dom_sid *sid, union unid_t *id,
1163                    enum lsa_SidType *type)
1164 {
1165         struct pdb_methods *pdb = pdb_get_methods();
1166         return pdb->sid_to_id(pdb, sid, id, type);
1167 }
1168
1169 uint32_t pdb_capabilities(void)
1170 {
1171         struct pdb_methods *pdb = pdb_get_methods();
1172         return pdb->capabilities(pdb);
1173 }
1174
1175 /********************************************************************
1176  Allocate a new RID from the passdb backend.  Verify that it is free
1177  by calling lookup_global_sam_rid() to verify that the RID is not
1178  in use.  This handles servers that have existing users or groups
1179  with add RIDs (assigned from previous algorithmic mappings)
1180 ********************************************************************/
1181
1182 bool pdb_new_rid(uint32_t *rid)
1183 {
1184         struct pdb_methods *pdb = pdb_get_methods();
1185         const char *name = NULL;
1186         enum lsa_SidType type;
1187         uint32_t allocated_rid = 0;
1188         int i;
1189         TALLOC_CTX *ctx;
1190
1191         if ((pdb_capabilities() & PDB_CAP_STORE_RIDS) == 0) {
1192                 DEBUG(0, ("Trying to allocate a RID when algorithmic RIDs "
1193                           "are active\n"));
1194                 return False;
1195         }
1196
1197         if (algorithmic_rid_base() != BASE_RID) {
1198                 DEBUG(0, ("'algorithmic rid base' is set but a passdb backend "
1199                           "without algorithmic RIDs is chosen.\n"));
1200                 DEBUGADD(0, ("Please map all used groups using 'net groupmap "
1201                              "add', set the maximum used RID\n"));
1202                 DEBUGADD(0, ("and remove the parameter\n"));
1203                 return False;
1204         }
1205
1206         if ( (ctx = talloc_init("pdb_new_rid")) == NULL ) {
1207                 DEBUG(0,("pdb_new_rid: Talloc initialization failure\n"));
1208                 return False;
1209         }
1210
1211         /* Attempt to get an unused RID (max tires is 250...yes that it is
1212            and arbitrary number I pulkled out of my head).   -- jerry */
1213
1214         for ( i=0; allocated_rid==0 && i<250; i++ ) {
1215                 /* get a new RID */
1216
1217                 if ( !pdb->new_rid(pdb, &allocated_rid) ) {
1218                         return False;
1219                 }
1220
1221                 /* validate that the RID is not in use */
1222
1223                 if ( lookup_global_sam_rid( ctx, allocated_rid, &name, &type, NULL ) ) {
1224                         allocated_rid = 0;
1225                 }
1226         }
1227
1228         TALLOC_FREE( ctx );
1229
1230         if ( allocated_rid == 0 ) {
1231                 DEBUG(0,("pdb_new_rid: Failed to find unused RID\n"));
1232                 return False;
1233         }
1234
1235         *rid = allocated_rid;
1236
1237         return True;
1238 }
1239
1240 /***************************************************************
1241   Initialize the static context (at smbd startup etc).
1242
1243   If uninitialised, context will auto-init on first use.
1244  ***************************************************************/
1245
1246 bool initialize_password_db(bool reload, struct event_context *event_ctx)
1247 {
1248         pdb_event_ctx = event_ctx;
1249         return (pdb_get_methods_reload(reload) != NULL);
1250 }
1251
1252
1253 /***************************************************************************
1254   Default implementations of some functions.
1255  ****************************************************************************/
1256
1257 static NTSTATUS pdb_default_getsampwnam (struct pdb_methods *methods, struct samu *user, const char *sname)
1258 {
1259         return NT_STATUS_NO_SUCH_USER;
1260 }
1261
1262 static NTSTATUS pdb_default_getsampwsid(struct pdb_methods *my_methods, struct samu * user, const struct dom_sid *sid)
1263 {
1264         return NT_STATUS_NO_SUCH_USER;
1265 }
1266
1267 static NTSTATUS pdb_default_add_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1268 {
1269         return NT_STATUS_NOT_IMPLEMENTED;
1270 }
1271
1272 static NTSTATUS pdb_default_update_sam_account (struct pdb_methods *methods, struct samu *newpwd)
1273 {
1274         return NT_STATUS_NOT_IMPLEMENTED;
1275 }
1276
1277 static NTSTATUS pdb_default_delete_sam_account (struct pdb_methods *methods, struct samu *pwd)
1278 {
1279         return NT_STATUS_NOT_IMPLEMENTED;
1280 }
1281
1282 static NTSTATUS pdb_default_rename_sam_account (struct pdb_methods *methods, struct samu *pwd, const char *newname)
1283 {
1284         return NT_STATUS_NOT_IMPLEMENTED;
1285 }
1286
1287 static NTSTATUS pdb_default_update_login_attempts (struct pdb_methods *methods, struct samu *newpwd, bool success)
1288 {
1289         /* Only the pdb_nds backend implements this, by
1290          * default just return ok. */
1291         return NT_STATUS_OK;
1292 }
1293
1294 static NTSTATUS pdb_default_get_account_policy(struct pdb_methods *methods, enum pdb_policy_type type, uint32_t *value)
1295 {
1296         return account_policy_get(type, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1297 }
1298
1299 static NTSTATUS pdb_default_set_account_policy(struct pdb_methods *methods, enum pdb_policy_type type, uint32_t value)
1300 {
1301         return account_policy_set(type, value) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
1302 }
1303
1304 static NTSTATUS pdb_default_get_seq_num(struct pdb_methods *methods, time_t *seq_num)
1305 {
1306         *seq_num = time(NULL);
1307         return NT_STATUS_OK;
1308 }
1309
1310 static bool pdb_default_uid_to_sid(struct pdb_methods *methods, uid_t uid,
1311                                    struct dom_sid *sid)
1312 {
1313         struct samu *sampw = NULL;
1314         struct passwd *unix_pw;
1315         bool ret;
1316
1317         unix_pw = sys_getpwuid( uid );
1318
1319         if ( !unix_pw ) {
1320                 DEBUG(4,("pdb_default_uid_to_sid: host has no idea of uid "
1321                          "%lu\n", (unsigned long)uid));
1322                 return False;
1323         }
1324
1325         if ( !(sampw = samu_new( NULL )) ) {
1326                 DEBUG(0,("pdb_default_uid_to_sid: samu_new() failed!\n"));
1327                 return False;
1328         }
1329
1330         become_root();
1331         ret = NT_STATUS_IS_OK(
1332                 methods->getsampwnam(methods, sampw, unix_pw->pw_name ));
1333         unbecome_root();
1334
1335         if (!ret) {
1336                 DEBUG(5, ("pdb_default_uid_to_sid: Did not find user "
1337                           "%s (%u)\n", unix_pw->pw_name, (unsigned int)uid));
1338                 TALLOC_FREE(sampw);
1339                 return False;
1340         }
1341
1342         sid_copy(sid, pdb_get_user_sid(sampw));
1343
1344         TALLOC_FREE(sampw);
1345
1346         return True;
1347 }
1348
1349 static bool pdb_default_gid_to_sid(struct pdb_methods *methods, gid_t gid,
1350                                    struct dom_sid *sid)
1351 {
1352         GROUP_MAP map;
1353
1354         if (!NT_STATUS_IS_OK(methods->getgrgid(methods, &map, gid))) {
1355                 return False;
1356         }
1357
1358         sid_copy(sid, &map.sid);
1359         return True;
1360 }
1361
1362 static bool pdb_default_sid_to_id(struct pdb_methods *methods,
1363                                   const struct dom_sid *sid,
1364                                   union unid_t *id, enum lsa_SidType *type)
1365 {
1366         TALLOC_CTX *mem_ctx;
1367         bool ret = False;
1368         const char *name;
1369         uint32_t rid;
1370
1371         mem_ctx = talloc_new(NULL);
1372
1373         if (mem_ctx == NULL) {
1374                 DEBUG(0, ("talloc_new failed\n"));
1375                 return False;
1376         }
1377
1378         if (sid_peek_check_rid(get_global_sam_sid(), sid, &rid)) {
1379                 /* Here we might have users as well as groups and aliases */
1380                 ret = lookup_global_sam_rid(mem_ctx, rid, &name, type, id);
1381                 goto done;
1382         }
1383
1384         /* check for "Unix User" */
1385
1386         if ( sid_peek_check_rid(&global_sid_Unix_Users, sid, &rid) ) {
1387                 id->uid = rid;
1388                 *type = SID_NAME_USER;
1389                 ret = True;
1390                 goto done;
1391         }
1392
1393         /* check for "Unix Group" */
1394
1395         if ( sid_peek_check_rid(&global_sid_Unix_Groups, sid, &rid) ) {
1396                 id->gid = rid;
1397                 *type = SID_NAME_ALIAS;
1398                 ret = True;
1399                 goto done;
1400         }
1401
1402         /* BUILTIN */
1403
1404         if (sid_check_is_in_builtin(sid) ||
1405             sid_check_is_in_wellknown_domain(sid)) {
1406                 /* Here we only have aliases */
1407                 GROUP_MAP map;
1408                 if (!NT_STATUS_IS_OK(methods->getgrsid(methods, &map, *sid))) {
1409                         DEBUG(10, ("Could not find map for sid %s\n",
1410                                    sid_string_dbg(sid)));
1411                         goto done;
1412                 }
1413                 if ((map.sid_name_use != SID_NAME_ALIAS) &&
1414                     (map.sid_name_use != SID_NAME_WKN_GRP)) {
1415                         DEBUG(10, ("Map for sid %s is a %s, expected an "
1416                                    "alias\n", sid_string_dbg(sid),
1417                                    sid_type_lookup(map.sid_name_use)));
1418                         goto done;
1419                 }
1420
1421                 id->gid = map.gid;
1422                 *type = SID_NAME_ALIAS;
1423                 ret = True;
1424                 goto done;
1425         }
1426
1427         DEBUG(5, ("Sid %s is neither ours, a Unix SID, nor builtin\n",
1428                   sid_string_dbg(sid)));
1429
1430  done:
1431
1432         TALLOC_FREE(mem_ctx);
1433         return ret;
1434 }
1435
1436 static bool get_memberuids(TALLOC_CTX *mem_ctx, gid_t gid, uid_t **pp_uids, size_t *p_num)
1437 {
1438         struct group *grp;
1439         char **gr;
1440         struct passwd *pwd;
1441         bool winbind_env;
1442         bool ret = False;
1443
1444         *pp_uids = NULL;
1445         *p_num = 0;
1446
1447         /* We only look at our own sam, so don't care about imported stuff */
1448         winbind_env = winbind_env_set();
1449         (void)winbind_off();
1450
1451         if ((grp = getgrgid(gid)) == NULL) {
1452                 /* allow winbindd lookups, but only if they weren't already disabled */
1453                 goto done;
1454         }
1455
1456         /* Primary group members */
1457         setpwent();
1458         while ((pwd = getpwent()) != NULL) {
1459                 if (pwd->pw_gid == gid) {
1460                         if (!add_uid_to_array_unique(mem_ctx, pwd->pw_uid,
1461                                                 pp_uids, p_num)) {
1462                                 goto done;
1463                         }
1464                 }
1465         }
1466         endpwent();
1467
1468         /* Secondary group members */
1469         for (gr = grp->gr_mem; (*gr != NULL) && ((*gr)[0] != '\0'); gr += 1) {
1470                 struct passwd *pw = getpwnam(*gr);
1471
1472                 if (pw == NULL)
1473                         continue;
1474                 if (!add_uid_to_array_unique(mem_ctx, pw->pw_uid, pp_uids, p_num)) {
1475                         goto done;
1476                 }
1477         }
1478
1479         ret = True;
1480
1481   done:
1482
1483         /* allow winbindd lookups, but only if they weren't already disabled */
1484         if (!winbind_env) {
1485                 (void)winbind_on();
1486         }
1487
1488         return ret;
1489 }
1490
1491 static NTSTATUS pdb_default_enum_group_members(struct pdb_methods *methods,
1492                                                TALLOC_CTX *mem_ctx,
1493                                                const struct dom_sid *group,
1494                                                uint32_t **pp_member_rids,
1495                                                size_t *p_num_members)
1496 {
1497         gid_t gid;
1498         uid_t *uids;
1499         size_t i, num_uids;
1500
1501         *pp_member_rids = NULL;
1502         *p_num_members = 0;
1503
1504         if (!sid_to_gid(group, &gid))
1505                 return NT_STATUS_NO_SUCH_GROUP;
1506
1507         if(!get_memberuids(mem_ctx, gid, &uids, &num_uids))
1508                 return NT_STATUS_NO_SUCH_GROUP;
1509
1510         if (num_uids == 0)
1511                 return NT_STATUS_OK;
1512
1513         *pp_member_rids = TALLOC_ZERO_ARRAY(mem_ctx, uint32_t, num_uids);
1514
1515         for (i=0; i<num_uids; i++) {
1516                 struct dom_sid sid;
1517
1518                 uid_to_sid(&sid, uids[i]);
1519
1520                 if (!sid_check_is_in_our_domain(&sid)) {
1521                         DEBUG(5, ("Inconsistent SAM -- group member uid not "
1522                                   "in our domain\n"));
1523                         continue;
1524                 }
1525
1526                 sid_peek_rid(&sid, &(*pp_member_rids)[*p_num_members]);
1527                 *p_num_members += 1;
1528         }
1529
1530         return NT_STATUS_OK;
1531 }
1532
1533 static NTSTATUS pdb_default_enum_group_memberships(struct pdb_methods *methods,
1534                                                    TALLOC_CTX *mem_ctx,
1535                                                    struct samu *user,
1536                                                    struct dom_sid **pp_sids,
1537                                                    gid_t **pp_gids,
1538                                                    size_t *p_num_groups)
1539 {
1540         size_t i;
1541         gid_t gid;
1542         struct passwd *pw;
1543         const char *username = pdb_get_username(user);
1544
1545
1546         /* Ignore the primary group SID.  Honor the real Unix primary group.
1547            The primary group SID is only of real use to Windows clients */
1548
1549         if ( !(pw = Get_Pwnam_alloc(mem_ctx, username)) ) {
1550                 return NT_STATUS_NO_SUCH_USER;
1551         }
1552
1553         gid = pw->pw_gid;
1554
1555         TALLOC_FREE( pw );
1556
1557         if (!getgroups_unix_user(mem_ctx, username, gid, pp_gids, p_num_groups)) {
1558                 return NT_STATUS_NO_SUCH_USER;
1559         }
1560
1561         if (*p_num_groups == 0) {
1562                 smb_panic("primary group missing");
1563         }
1564
1565         *pp_sids = TALLOC_ARRAY(mem_ctx, struct dom_sid, *p_num_groups);
1566
1567         if (*pp_sids == NULL) {
1568                 TALLOC_FREE(*pp_gids);
1569                 return NT_STATUS_NO_MEMORY;
1570         }
1571
1572         for (i=0; i<*p_num_groups; i++) {
1573                 gid_to_sid(&(*pp_sids)[i], (*pp_gids)[i]);
1574         }
1575
1576         return NT_STATUS_OK;
1577 }
1578
1579 /*******************************************************************
1580  Look up a rid in the SAM we're responsible for (i.e. passdb)
1581  ********************************************************************/
1582
1583 static bool lookup_global_sam_rid(TALLOC_CTX *mem_ctx, uint32_t rid,
1584                                   const char **name,
1585                                   enum lsa_SidType *psid_name_use,
1586                                   union unid_t *unix_id)
1587 {
1588         struct samu *sam_account = NULL;
1589         GROUP_MAP map;
1590         bool ret;
1591         struct dom_sid sid;
1592
1593         *psid_name_use = SID_NAME_UNKNOWN;
1594
1595         DEBUG(5,("lookup_global_sam_rid: looking up RID %u.\n",
1596                  (unsigned int)rid));
1597
1598         sid_compose(&sid, get_global_sam_sid(), rid);
1599
1600         /* see if the passdb can help us with the name of the user */
1601
1602         if ( !(sam_account = samu_new( NULL )) ) {
1603                 return False;
1604         }
1605
1606         /* BEING ROOT BLOCK */
1607         become_root();
1608         if (pdb_getsampwsid(sam_account, &sid)) {
1609                 struct passwd *pw;
1610
1611                 unbecome_root();                /* -----> EXIT BECOME_ROOT() */
1612                 *name = talloc_strdup(mem_ctx, pdb_get_username(sam_account));
1613                 if (!*name) {
1614                         TALLOC_FREE(sam_account);
1615                         return False;
1616                 }
1617
1618                 *psid_name_use = SID_NAME_USER;
1619
1620                 TALLOC_FREE(sam_account);
1621
1622                 if (unix_id == NULL) {
1623                         return True;
1624                 }
1625
1626                 pw = Get_Pwnam_alloc(talloc_tos(), *name);
1627                 if (pw == NULL) {
1628                         return False;
1629                 }
1630                 unix_id->uid = pw->pw_uid;
1631                 TALLOC_FREE(pw);
1632                 return True;
1633         }
1634         TALLOC_FREE(sam_account);
1635
1636         ret = pdb_getgrsid(&map, sid);
1637         unbecome_root();
1638         /* END BECOME_ROOT BLOCK */
1639
1640         /* do not resolve SIDs to a name unless there is a valid
1641            gid associated with it */
1642
1643         if ( ret && (map.gid != (gid_t)-1) ) {
1644                 *name = talloc_strdup(mem_ctx, map.nt_name);
1645                 *psid_name_use = map.sid_name_use;
1646
1647                 if ( unix_id ) {
1648                         unix_id->gid = map.gid;
1649                 }
1650
1651                 return True;
1652         }
1653
1654         /* Windows will always map RID 513 to something.  On a non-domain
1655            controller, this gets mapped to SERVER\None. */
1656
1657         if ( unix_id ) {
1658                 DEBUG(5, ("Can't find a unix id for an unmapped group\n"));
1659                 return False;
1660         }
1661
1662         if ( rid == DOMAIN_RID_USERS ) {
1663                 *name = talloc_strdup(mem_ctx, "None" );
1664                 *psid_name_use = SID_NAME_DOM_GRP;
1665
1666                 return True;
1667         }
1668
1669         return False;
1670 }
1671
1672 static NTSTATUS pdb_default_lookup_rids(struct pdb_methods *methods,
1673                                         const struct dom_sid *domain_sid,
1674                                         int num_rids,
1675                                         uint32_t *rids,
1676                                         const char **names,
1677                                         enum lsa_SidType *attrs)
1678 {
1679         int i;
1680         NTSTATUS result;
1681         bool have_mapped = False;
1682         bool have_unmapped = False;
1683
1684         if (sid_check_is_builtin(domain_sid)) {
1685
1686                 for (i=0; i<num_rids; i++) {
1687                         const char *name;
1688
1689                         if (lookup_builtin_rid(names, rids[i], &name)) {
1690                                 attrs[i] = SID_NAME_ALIAS;
1691                                 names[i] = name;
1692                                 DEBUG(5,("lookup_rids: %s:%d\n",
1693                                          names[i], attrs[i]));
1694                                 have_mapped = True;
1695                         } else {
1696                                 have_unmapped = True;
1697                                 attrs[i] = SID_NAME_UNKNOWN;
1698                         }
1699                 }
1700                 goto done;
1701         }
1702
1703         /* Should not happen, but better check once too many */
1704         if (!sid_check_is_domain(domain_sid)) {
1705                 return NT_STATUS_INVALID_HANDLE;
1706         }
1707
1708         for (i = 0; i < num_rids; i++) {
1709                 const char *name;
1710
1711                 if (lookup_global_sam_rid(names, rids[i], &name, &attrs[i],
1712                                           NULL)) {
1713                         if (name == NULL) {
1714                                 return NT_STATUS_NO_MEMORY;
1715                         }
1716                         names[i] = name;
1717                         DEBUG(5,("lookup_rids: %s:%d\n", names[i], attrs[i]));
1718                         have_mapped = True;
1719                 } else {
1720                         have_unmapped = True;
1721                         attrs[i] = SID_NAME_UNKNOWN;
1722                 }
1723         }
1724
1725  done:
1726
1727         result = NT_STATUS_NONE_MAPPED;
1728
1729         if (have_mapped)
1730                 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1731
1732         return result;
1733 }
1734
1735 #if 0
1736 static NTSTATUS pdb_default_lookup_names(struct pdb_methods *methods,
1737                                          const struct dom_sid *domain_sid,
1738                                          int num_names,
1739                                          const char **names,
1740                                          uint32_t *rids,
1741                                          enum lsa_SidType *attrs)
1742 {
1743         int i;
1744         NTSTATUS result;
1745         bool have_mapped = False;
1746         bool have_unmapped = False;
1747
1748         if (sid_check_is_builtin(domain_sid)) {
1749
1750                 for (i=0; i<num_names; i++) {
1751                         uint32_t rid;
1752
1753                         if (lookup_builtin_name(names[i], &rid)) {
1754                                 attrs[i] = SID_NAME_ALIAS;
1755                                 rids[i] = rid;
1756                                 DEBUG(5,("lookup_rids: %s:%d\n",
1757                                          names[i], attrs[i]));
1758                                 have_mapped = True;
1759                         } else {
1760                                 have_unmapped = True;
1761                                 attrs[i] = SID_NAME_UNKNOWN;
1762                         }
1763                 }
1764                 goto done;
1765         }
1766
1767         /* Should not happen, but better check once too many */
1768         if (!sid_check_is_domain(domain_sid)) {
1769                 return NT_STATUS_INVALID_HANDLE;
1770         }
1771
1772         for (i = 0; i < num_names; i++) {
1773                 if (lookup_global_sam_name(names[i], 0, &rids[i], &attrs[i])) {
1774                         DEBUG(5,("lookup_names: %s-> %d:%d\n", names[i],
1775                                  rids[i], attrs[i]));
1776                         have_mapped = True;
1777                 } else {
1778                         have_unmapped = True;
1779                         attrs[i] = SID_NAME_UNKNOWN;
1780                 }
1781         }
1782
1783  done:
1784
1785         result = NT_STATUS_NONE_MAPPED;
1786
1787         if (have_mapped)
1788                 result = have_unmapped ? STATUS_SOME_UNMAPPED : NT_STATUS_OK;
1789
1790         return result;
1791 }
1792 #endif
1793
1794 static int pdb_search_destructor(struct pdb_search *search)
1795 {
1796         if ((!search->search_ended) && (search->search_end != NULL)) {
1797                 search->search_end(search);
1798         }
1799         return 0;
1800 }
1801
1802 struct pdb_search *pdb_search_init(TALLOC_CTX *mem_ctx,
1803                                    enum pdb_search_type type)
1804 {
1805         struct pdb_search *result;
1806
1807         result = talloc(mem_ctx, struct pdb_search);
1808         if (result == NULL) {
1809                 DEBUG(0, ("talloc failed\n"));
1810                 return NULL;
1811         }
1812
1813         result->type = type;
1814         result->cache = NULL;
1815         result->num_entries = 0;
1816         result->cache_size = 0;
1817         result->search_ended = False;
1818         result->search_end = NULL;
1819
1820         /* Segfault appropriately if not initialized */
1821         result->next_entry = NULL;
1822         result->search_end = NULL;
1823
1824         talloc_set_destructor(result, pdb_search_destructor);
1825
1826         return result;
1827 }
1828
1829 static void fill_displayentry(TALLOC_CTX *mem_ctx, uint32_t rid,
1830                               uint16_t acct_flags,
1831                               const char *account_name,
1832                               const char *fullname,
1833                               const char *description,
1834                               struct samr_displayentry *entry)
1835 {
1836         entry->rid = rid;
1837         entry->acct_flags = acct_flags;
1838
1839         if (account_name != NULL)
1840                 entry->account_name = talloc_strdup(mem_ctx, account_name);
1841         else
1842                 entry->account_name = "";
1843
1844         if (fullname != NULL)
1845                 entry->fullname = talloc_strdup(mem_ctx, fullname);
1846         else
1847                 entry->fullname = "";
1848
1849         if (description != NULL)
1850                 entry->description = talloc_strdup(mem_ctx, description);
1851         else
1852                 entry->description = "";
1853 }
1854
1855 struct group_search {
1856         GROUP_MAP *groups;
1857         size_t num_groups, current_group;
1858 };
1859
1860 static bool next_entry_groups(struct pdb_search *s,
1861                               struct samr_displayentry *entry)
1862 {
1863         struct group_search *state = (struct group_search *)s->private_data;
1864         uint32_t rid;
1865         GROUP_MAP *map = &state->groups[state->current_group];
1866
1867         if (state->current_group == state->num_groups)
1868                 return False;
1869
1870         sid_peek_rid(&map->sid, &rid);
1871
1872         fill_displayentry(s, rid, 0, map->nt_name, NULL, map->comment, entry);
1873
1874         state->current_group += 1;
1875         return True;
1876 }
1877
1878 static void search_end_groups(struct pdb_search *search)
1879 {
1880         struct group_search *state =
1881                 (struct group_search *)search->private_data;
1882         SAFE_FREE(state->groups);
1883 }
1884
1885 static bool pdb_search_grouptype(struct pdb_search *search,
1886                                  const struct dom_sid *sid, enum lsa_SidType type)
1887 {
1888         struct group_search *state;
1889
1890         state = talloc(search, struct group_search);
1891         if (state == NULL) {
1892                 DEBUG(0, ("talloc failed\n"));
1893                 return False;
1894         }
1895
1896         if (!pdb_enum_group_mapping(sid, type, &state->groups, &state->num_groups,
1897                                     True)) {
1898                 DEBUG(0, ("Could not enum groups\n"));
1899                 return False;
1900         }
1901
1902         state->current_group = 0;
1903         search->private_data = state;
1904         search->next_entry = next_entry_groups;
1905         search->search_end = search_end_groups;
1906         return True;
1907 }
1908
1909 static bool pdb_default_search_groups(struct pdb_methods *methods,
1910                                       struct pdb_search *search)
1911 {
1912         return pdb_search_grouptype(search, get_global_sam_sid(), SID_NAME_DOM_GRP);
1913 }
1914
1915 static bool pdb_default_search_aliases(struct pdb_methods *methods,
1916                                        struct pdb_search *search,
1917                                        const struct dom_sid *sid)
1918 {
1919
1920         return pdb_search_grouptype(search, sid, SID_NAME_ALIAS);
1921 }
1922
1923 static struct samr_displayentry *pdb_search_getentry(struct pdb_search *search,
1924                                                      uint32_t idx)
1925 {
1926         if (idx < search->num_entries)
1927                 return &search->cache[idx];
1928
1929         if (search->search_ended)
1930                 return NULL;
1931
1932         while (idx >= search->num_entries) {
1933                 struct samr_displayentry entry;
1934
1935                 if (!search->next_entry(search, &entry)) {
1936                         search->search_end(search);
1937                         search->search_ended = True;
1938                         break;
1939                 }
1940
1941                 ADD_TO_LARGE_ARRAY(search, struct samr_displayentry,
1942                                    entry, &search->cache, &search->num_entries,
1943                                    &search->cache_size);
1944         }
1945
1946         return (search->num_entries > idx) ? &search->cache[idx] : NULL;
1947 }
1948
1949 struct pdb_search *pdb_search_users(TALLOC_CTX *mem_ctx, uint32_t acct_flags)
1950 {
1951         struct pdb_methods *pdb = pdb_get_methods();
1952         struct pdb_search *result;
1953
1954         result = pdb_search_init(mem_ctx, PDB_USER_SEARCH);
1955         if (result == NULL) {
1956                 return NULL;
1957         }
1958
1959         if (!pdb->search_users(pdb, result, acct_flags)) {
1960                 TALLOC_FREE(result);
1961                 return NULL;
1962         }
1963         return result;
1964 }
1965
1966 struct pdb_search *pdb_search_groups(TALLOC_CTX *mem_ctx)
1967 {
1968         struct pdb_methods *pdb = pdb_get_methods();
1969         struct pdb_search *result;
1970
1971         result = pdb_search_init(mem_ctx, PDB_GROUP_SEARCH);
1972         if (result == NULL) {
1973                  return NULL;
1974         }
1975
1976         if (!pdb->search_groups(pdb, result)) {
1977                 TALLOC_FREE(result);
1978                 return NULL;
1979         }
1980         return result;
1981 }
1982
1983 struct pdb_search *pdb_search_aliases(TALLOC_CTX *mem_ctx, const struct dom_sid *sid)
1984 {
1985         struct pdb_methods *pdb = pdb_get_methods();
1986         struct pdb_search *result;
1987
1988         if (pdb == NULL) return NULL;
1989
1990         result = pdb_search_init(mem_ctx, PDB_ALIAS_SEARCH);
1991         if (result == NULL) {
1992                 return NULL;
1993         }
1994
1995         if (!pdb->search_aliases(pdb, result, sid)) {
1996                 TALLOC_FREE(result);
1997                 return NULL;
1998         }
1999         return result;
2000 }
2001
2002 uint32_t pdb_search_entries(struct pdb_search *search,
2003                           uint32_t start_idx, uint32_t max_entries,
2004                           struct samr_displayentry **result)
2005 {
2006         struct samr_displayentry *end_entry;
2007         uint32_t end_idx = start_idx+max_entries-1;
2008
2009         /* The first entry needs to be searched after the last. Otherwise the
2010          * first entry might have moved due to a realloc during the search for
2011          * the last entry. */
2012
2013         end_entry = pdb_search_getentry(search, end_idx);
2014         *result = pdb_search_getentry(search, start_idx);
2015
2016         if (end_entry != NULL)
2017                 return max_entries;
2018
2019         if (start_idx >= search->num_entries)
2020                 return 0;
2021
2022         return search->num_entries - start_idx;
2023 }
2024
2025 /*******************************************************************
2026  trustdom methods
2027  *******************************************************************/
2028
2029 bool pdb_get_trusteddom_pw(const char *domain, char** pwd, struct dom_sid *sid,
2030                            time_t *pass_last_set_time)
2031 {
2032         struct pdb_methods *pdb = pdb_get_methods();
2033         return pdb->get_trusteddom_pw(pdb, domain, pwd, sid,
2034                         pass_last_set_time);
2035 }
2036
2037 bool pdb_set_trusteddom_pw(const char* domain, const char* pwd,
2038                            const struct dom_sid *sid)
2039 {
2040         struct pdb_methods *pdb = pdb_get_methods();
2041         return pdb->set_trusteddom_pw(pdb, domain, pwd, sid);
2042 }
2043
2044 bool pdb_del_trusteddom_pw(const char *domain)
2045 {
2046         struct pdb_methods *pdb = pdb_get_methods();
2047         return pdb->del_trusteddom_pw(pdb, domain);
2048 }
2049
2050 NTSTATUS pdb_enum_trusteddoms(TALLOC_CTX *mem_ctx, uint32_t *num_domains,
2051                               struct trustdom_info ***domains)
2052 {
2053         struct pdb_methods *pdb = pdb_get_methods();
2054         return pdb->enum_trusteddoms(pdb, mem_ctx, num_domains, domains);
2055 }
2056
2057 /*******************************************************************
2058  the defaults for trustdom methods:
2059  these simply call the original passdb/secrets.c actions,
2060  to be replaced by pdb_ldap.
2061  *******************************************************************/
2062
2063 static bool pdb_default_get_trusteddom_pw(struct pdb_methods *methods,
2064                                           const char *domain,
2065                                           char** pwd,
2066                                           struct dom_sid *sid,
2067                                           time_t *pass_last_set_time)
2068 {
2069         return secrets_fetch_trusted_domain_password(domain, pwd,
2070                                 sid, pass_last_set_time);
2071
2072 }
2073
2074 static bool pdb_default_set_trusteddom_pw(struct pdb_methods *methods,
2075                                           const char* domain,
2076                                           const char* pwd,
2077                                           const struct dom_sid *sid)
2078 {
2079         return secrets_store_trusted_domain_password(domain, pwd, sid);
2080 }
2081
2082 static bool pdb_default_del_trusteddom_pw(struct pdb_methods *methods,
2083                                           const char *domain)
2084 {
2085         return trusted_domain_password_delete(domain);
2086 }
2087
2088 static NTSTATUS pdb_default_enum_trusteddoms(struct pdb_methods *methods,
2089                                              TALLOC_CTX *mem_ctx,
2090                                              uint32_t *num_domains,
2091                                              struct trustdom_info ***domains)
2092 {
2093         return secrets_trusted_domains(mem_ctx, num_domains, domains);
2094 }
2095
2096 static struct pdb_domain_info *pdb_default_get_domain_info(
2097         struct pdb_methods *m, TALLOC_CTX *mem_ctx)
2098 {
2099         return NULL;
2100 }
2101
2102 /*******************************************************************
2103  Create a pdb_methods structure and initialize it with the default
2104  operations.  In this way a passdb module can simply implement
2105  the functionality it cares about.  However, normally this is done
2106  in groups of related functions.
2107 *******************************************************************/
2108
2109 NTSTATUS make_pdb_method( struct pdb_methods **methods )
2110 {
2111         /* allocate memory for the structure as its own talloc CTX */
2112
2113         *methods = talloc_zero(NULL, struct pdb_methods);
2114         if (*methods == NULL) {
2115                 return NT_STATUS_NO_MEMORY;
2116         }
2117
2118         (*methods)->get_domain_info = pdb_default_get_domain_info;
2119         (*methods)->getsampwnam = pdb_default_getsampwnam;
2120         (*methods)->getsampwsid = pdb_default_getsampwsid;
2121         (*methods)->create_user = pdb_default_create_user;
2122         (*methods)->delete_user = pdb_default_delete_user;
2123         (*methods)->add_sam_account = pdb_default_add_sam_account;
2124         (*methods)->update_sam_account = pdb_default_update_sam_account;
2125         (*methods)->delete_sam_account = pdb_default_delete_sam_account;
2126         (*methods)->rename_sam_account = pdb_default_rename_sam_account;
2127         (*methods)->update_login_attempts = pdb_default_update_login_attempts;
2128
2129         (*methods)->getgrsid = pdb_default_getgrsid;
2130         (*methods)->getgrgid = pdb_default_getgrgid;
2131         (*methods)->getgrnam = pdb_default_getgrnam;
2132         (*methods)->create_dom_group = pdb_default_create_dom_group;
2133         (*methods)->delete_dom_group = pdb_default_delete_dom_group;
2134         (*methods)->add_group_mapping_entry = pdb_default_add_group_mapping_entry;
2135         (*methods)->update_group_mapping_entry = pdb_default_update_group_mapping_entry;
2136         (*methods)->delete_group_mapping_entry = pdb_default_delete_group_mapping_entry;
2137         (*methods)->enum_group_mapping = pdb_default_enum_group_mapping;
2138         (*methods)->enum_group_members = pdb_default_enum_group_members;
2139         (*methods)->enum_group_memberships = pdb_default_enum_group_memberships;
2140         (*methods)->set_unix_primary_group = pdb_default_set_unix_primary_group;
2141         (*methods)->add_groupmem = pdb_default_add_groupmem;
2142         (*methods)->del_groupmem = pdb_default_del_groupmem;
2143         (*methods)->create_alias = pdb_default_create_alias;
2144         (*methods)->delete_alias = pdb_default_delete_alias;
2145         (*methods)->get_aliasinfo = pdb_default_get_aliasinfo;
2146         (*methods)->set_aliasinfo = pdb_default_set_aliasinfo;
2147         (*methods)->add_aliasmem = pdb_default_add_aliasmem;
2148         (*methods)->del_aliasmem = pdb_default_del_aliasmem;
2149         (*methods)->enum_aliasmem = pdb_default_enum_aliasmem;
2150         (*methods)->enum_alias_memberships = pdb_default_alias_memberships;
2151         (*methods)->lookup_rids = pdb_default_lookup_rids;
2152         (*methods)->get_account_policy = pdb_default_get_account_policy;
2153         (*methods)->set_account_policy = pdb_default_set_account_policy;
2154         (*methods)->get_seq_num = pdb_default_get_seq_num;
2155         (*methods)->uid_to_sid = pdb_default_uid_to_sid;
2156         (*methods)->gid_to_sid = pdb_default_gid_to_sid;
2157         (*methods)->sid_to_id = pdb_default_sid_to_id;
2158
2159         (*methods)->search_groups = pdb_default_search_groups;
2160         (*methods)->search_aliases = pdb_default_search_aliases;
2161
2162         (*methods)->get_trusteddom_pw = pdb_default_get_trusteddom_pw;
2163         (*methods)->set_trusteddom_pw = pdb_default_set_trusteddom_pw;
2164         (*methods)->del_trusteddom_pw = pdb_default_del_trusteddom_pw;
2165         (*methods)->enum_trusteddoms  = pdb_default_enum_trusteddoms;
2166
2167         return NT_STATUS_OK;
2168 }