source3/passdb/pdb_tdb.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  * SMB parameters and setup
   4  * Copyright (C) Andrew Tridgell   1992-1998
   5  * Copyright (C) Simo Sorce        2000-2003
   6  * Copyright (C) Gerald Carter     2000-2006
   7  * Copyright (C) Jeremy Allison    2001-2009
   8  * Copyright (C) Andrew Bartlett   2002
   9  * Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2005
  10  *
  11  * This program is free software; you can redistribute it and/or modify it under
  12  * the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 3 of the License, or (at your option)
  14  * any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful, but WITHOUT
  17  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  19  * more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along with
  22  * this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #include "includes.h"
  26 #include "system/filesys.h"
  27 #include "passdb.h"
  28 #include "dbwrap/dbwrap.h"
  29 #include "dbwrap/dbwrap_open.h"
  30 #include "../libcli/security/security.h"
  31 #include "util_tdb.h"
  32 #include "passdb/pdb_tdb.h"
  33
  34 #if 0 /* when made a module use this */
  35
  36 static int tdbsam_debug_level = DBGC_ALL;
  37 #undef DBGC_CLASS
  38 #define DBGC_CLASS tdbsam_debug_level
  39
  40 #else
  41
  42 #undef DBGC_CLASS
  43 #define DBGC_CLASS DBGC_PASSDB
  44
  45 #endif
  46
  47 #define TDBSAM_VERSION  4       /* Most recent TDBSAM version */
  48 #define TDBSAM_MINOR_VERSION    0       /* Most recent TDBSAM minor version */
  49 #define TDBSAM_VERSION_STRING   "INFO/version"
  50 #define TDBSAM_MINOR_VERSION_STRING     "INFO/minor_version"
  51 #define PASSDB_FILE_NAME        "passdb.tdb"
  52 #define USERPREFIX              "USER_"
  53 #define USERPREFIX_LEN          5
  54 #define RIDPREFIX               "RID_"
  55 #define PRIVPREFIX              "PRIV_"
  56 #define NEXT_RID_STRING         "NEXT_RID"
  57
  58 /* GLOBAL TDB SAM CONTEXT */
  59
  60 static struct db_context *db_sam;
  61 static char *tdbsam_filename;
  62 static bool map_builtin;
  63
  64 struct tdbsam_convert_state {
  65         int32_t from;
  66         bool success;
  67 };
  68
  69 static int tdbsam_convert_one(struct db_record *rec, void *priv)
  70 {
  71         struct tdbsam_convert_state *state =
  72                 (struct tdbsam_convert_state *)priv;
  73         struct samu *user;
  74         TDB_DATA data;
  75         NTSTATUS status;
  76         bool ret;
  77         TDB_DATA key;
  78         TDB_DATA value;
  79
  80         key = dbwrap_record_get_key(rec);
  81
  82         if (key.dsize < USERPREFIX_LEN) {
  83                 return 0;
  84         }
  85         if (strncmp((char *)key.dptr, USERPREFIX, USERPREFIX_LEN) != 0) {
  86                 return 0;
  87         }
  88
  89         user = samu_new(talloc_tos());
  90         if (user == NULL) {
  91                 DEBUG(0,("tdbsam_convert: samu_new() failed!\n"));
  92                 state->success = false;
  93                 return -1;
  94         }
  95
  96         DEBUG(10,("tdbsam_convert: Try unpacking a record with (key:%s) "
  97                   "(version:%d)\n", (char *)key.dptr, state->from));
  98
  99         value = dbwrap_record_get_value(rec);
 100
 101         switch (state->from) {
 102         case 0:
 103                 ret = init_samu_from_buffer(user, SAMU_BUFFER_V0,
 104                                             (uint8_t *)value.dptr,
 105                                             value.dsize);
 106                 break;
 107         case 1:
 108                 ret = init_samu_from_buffer(user, SAMU_BUFFER_V1,
 109                                             (uint8_t *)value.dptr,
 110                                             value.dsize);
 111                 break;
 112         case 2:
 113                 ret = init_samu_from_buffer(user, SAMU_BUFFER_V2,
 114                                             (uint8_t *)value.dptr,
 115                                             value.dsize);
 116                 break;
 117         case 3:
 118                 ret = init_samu_from_buffer(user, SAMU_BUFFER_V3,
 119                                             (uint8_t *)value.dptr,
 120                                             value.dsize);
 121                 break;
 122         case 4:
 123                 ret = init_samu_from_buffer(user, SAMU_BUFFER_V4,
 124                                             (uint8_t *)value.dptr,
 125                                             value.dsize);
 126                 break;
 127         default:
 128                 /* unknown tdbsam version */
 129                 ret = False;
 130         }
 131         if (!ret) {
 132                 DEBUG(0,("tdbsam_convert: Bad struct samu entry returned "
 133                          "from TDB (key:%s) (version:%d)\n", (char *)key.dptr,
 134                          state->from));
 135                 TALLOC_FREE(user);
 136                 state->success = false;
 137                 return -1;
 138         }
 139
 140         data.dsize = init_buffer_from_samu(&data.dptr, user, false);
 141         TALLOC_FREE(user);
 142
 143         if (data.dsize == -1) {
 144                 DEBUG(0,("tdbsam_convert: cannot pack the struct samu into "
 145                          "the new format\n"));
 146                 state->success = false;
 147                 return -1;
 148         }
 149
 150         status = dbwrap_record_store(rec, data, TDB_MODIFY);
 151         if (!NT_STATUS_IS_OK(status)) {
 152                 DEBUG(0, ("Could not store the new record: %s\n",
 153                           nt_errstr(status)));
 154                 state->success = false;
 155                 return -1;
 156         }
 157
 158         return 0;
 159 }
 160
 161 /**********************************************************************
 162  Struct and function to backup an old record.
 163  *********************************************************************/
 164
 165 struct tdbsam_backup_state {
 166         struct db_context *new_db;
 167         bool success;
 168 };
 169
 170 static int backup_copy_fn(struct db_record *orig_rec, void *state)
 171 {
 172         struct tdbsam_backup_state *bs = (struct tdbsam_backup_state *)state;
 173         struct db_record *new_rec;
 174         NTSTATUS status;
 175         TDB_DATA key;
 176         TDB_DATA value;
 177
 178         key = dbwrap_record_get_key(orig_rec);
 179
 180         new_rec = dbwrap_fetch_locked(bs->new_db, talloc_tos(), key);
 181         if (new_rec == NULL) {
 182                 bs->success = false;
 183                 return 1;
 184         }
 185
 186         value = dbwrap_record_get_value(orig_rec);
 187
 188         status = dbwrap_record_store(new_rec, value, TDB_INSERT);
 189
 190         TALLOC_FREE(new_rec);
 191
 192         if (!NT_STATUS_IS_OK(status)) {
 193                 bs->success = false;
 194                 return 1;
 195         }
 196         return 0;
 197 }
 198
 199 /**********************************************************************
 200  Make a backup of an old passdb and replace the new one with it. We
 201  have to do this as between 3.0.x and 3.2.x the hash function changed
 202  by mistake (used unsigned char * instead of char *). This means the
 203  previous simple update code will fail due to not being able to find
 204  existing records to replace in the tdbsam_convert_one() function. JRA.
 205  *********************************************************************/
 206
 207 static bool tdbsam_convert_backup(const char *dbname, struct db_context **pp_db)
 208 {
 209         TALLOC_CTX *frame = talloc_stackframe();
 210         const char *tmp_fname = NULL;
 211         struct db_context *tmp_db = NULL;
 212         struct db_context *orig_db = *pp_db;
 213         struct tdbsam_backup_state bs;
 214         NTSTATUS status;
 215
 216         tmp_fname = talloc_asprintf(frame, "%s.tmp", dbname);
 217         if (!tmp_fname) {
 218                 TALLOC_FREE(frame);
 219                 return false;
 220         }
 221
 222         unlink(tmp_fname);
 223
 224         /* Remember to open this on the NULL context. We need
 225          * it to stay around after we return from here. */
 226
 227         tmp_db = db_open(NULL, tmp_fname, 0,
 228                          TDB_DEFAULT, O_CREAT|O_RDWR, 0600,
 229                          DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
 230         if (tmp_db == NULL) {
 231                 DEBUG(0, ("tdbsam_convert_backup: Failed to create backup TDB passwd "
 232                           "[%s]\n", tmp_fname));
 233                 TALLOC_FREE(frame);
 234                 return false;
 235         }
 236
 237         if (dbwrap_transaction_start(orig_db) != 0) {
 238                 DEBUG(0, ("tdbsam_convert_backup: Could not start transaction (1)\n"));
 239                 unlink(tmp_fname);
 240                 TALLOC_FREE(tmp_db);
 241                 TALLOC_FREE(frame);
 242                 return false;
 243         }
 244         if (dbwrap_transaction_start(tmp_db) != 0) {
 245                 DEBUG(0, ("tdbsam_convert_backup: Could not start transaction (2)\n"));
 246                 dbwrap_transaction_cancel(orig_db);
 247                 unlink(tmp_fname);
 248                 TALLOC_FREE(tmp_db);
 249                 TALLOC_FREE(frame);
 250                 return false;
 251         }
 252
 253         bs.new_db = tmp_db;
 254         bs.success = true;
 255
 256         status = dbwrap_traverse(orig_db, backup_copy_fn, (void *)&bs, NULL);
 257         if (!NT_STATUS_IS_OK(status)) {
 258                 DEBUG(0, ("tdbsam_convert_backup: traverse failed\n"));
 259                 goto cancel;
 260         }
 261
 262         if (!bs.success) {
 263                 DEBUG(0, ("tdbsam_convert_backup: Rewriting records failed\n"));
 264                 goto cancel;
 265         }
 266
 267         if (dbwrap_transaction_commit(orig_db) != 0) {
 268                 smb_panic("tdbsam_convert_backup: orig commit failed\n");
 269         }
 270         if (dbwrap_transaction_commit(tmp_db) != 0) {
 271                 smb_panic("tdbsam_convert_backup: orig commit failed\n");
 272         }
 273
 274         /* be sure to close the DBs _before_ renaming the file */
 275
 276         TALLOC_FREE(orig_db);
 277         TALLOC_FREE(tmp_db);
 278
 279         /* This is safe from other users as we know we're
 280          * under a mutex here. */
 281
 282         if (rename(tmp_fname, dbname) == -1) {
 283                 DEBUG(0, ("tdbsam_convert_backup: rename of %s to %s failed %s\n",
 284                         tmp_fname,
 285                         dbname,
 286                         strerror(errno)));
 287                 smb_panic("tdbsam_convert_backup: replace passdb failed\n");
 288         }
 289
 290         TALLOC_FREE(frame);
 291
 292         /* re-open the converted TDB */
 293
 294         orig_db = db_open(NULL, dbname, 0,
 295                           TDB_DEFAULT, O_CREAT|O_RDWR, 0600,
 296                           DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
 297         if (orig_db == NULL) {
 298                 DEBUG(0, ("tdbsam_convert_backup: Failed to re-open "
 299                           "converted passdb TDB [%s]\n", dbname));
 300                 return false;
 301         }
 302
 303         DEBUG(1, ("tdbsam_convert_backup: updated %s file.\n",
 304                 dbname ));
 305
 306         /* Replace the global db pointer. */
 307         *pp_db = orig_db;
 308         return true;
 309
 310   cancel:
 311
 312         if (dbwrap_transaction_cancel(orig_db) != 0) {
 313                 smb_panic("tdbsam_convert: transaction_cancel failed");
 314         }
 315
 316         if (dbwrap_transaction_cancel(tmp_db) != 0) {
 317                 smb_panic("tdbsam_convert: transaction_cancel failed");
 318         }
 319
 320         unlink(tmp_fname);
 321         TALLOC_FREE(tmp_db);
 322         TALLOC_FREE(frame);
 323         return false;
 324 }
 325
 326 static bool tdbsam_upgrade_next_rid(struct db_context *db)
 327 {
 328         TDB_CONTEXT *tdb;
 329         uint32_t rid;
 330         bool ok = false;
 331         NTSTATUS status;
 332         char *db_path;
 333
 334         status = dbwrap_fetch_uint32_bystring(db, NEXT_RID_STRING, &rid);
 335         if (NT_STATUS_IS_OK(status)) {
 336                 return true;
 337         }
 338
 339         db_path = state_path("winbindd_idmap.tdb");
 340         if (db_path == NULL) {
 341                 return false;
 342         }
 343
 344         tdb = tdb_open_log(db_path, 0,
 345                            TDB_DEFAULT, O_RDONLY, 0644);
 346         TALLOC_FREE(db_path);
 347         if (tdb) {
 348                 ok = tdb_fetch_uint32(tdb, "RID_COUNTER", &rid);
 349                 if (!ok) {
 350                         rid = BASE_RID;
 351                 }
 352                 tdb_close(tdb);
 353         } else {
 354                 rid = BASE_RID;
 355         }
 356
 357         status = dbwrap_store_uint32_bystring(db, NEXT_RID_STRING, rid);
 358         if (!NT_STATUS_IS_OK(status)) {
 359                 return false;
 360         }
 361
 362         return true;
 363 }
 364
 365 static bool tdbsam_convert(struct db_context **pp_db, const char *name, int32_t from)
 366 {
 367         struct tdbsam_convert_state state;
 368         struct db_context *db = NULL;
 369         NTSTATUS status;
 370
 371         /* We only need the update backup for local db's. */
 372         if (db_is_local(name) && !tdbsam_convert_backup(name, pp_db)) {
 373                 DEBUG(0, ("tdbsam_convert: Could not backup %s\n", name));
 374                 return false;
 375         }
 376
 377         db = *pp_db;
 378         state.from = from;
 379         state.success = true;
 380
 381         if (dbwrap_transaction_start(db) != 0) {
 382                 DEBUG(0, ("tdbsam_convert: Could not start transaction\n"));
 383                 return false;
 384         }
 385
 386         if (!tdbsam_upgrade_next_rid(db)) {
 387                 DEBUG(0, ("tdbsam_convert: tdbsam_upgrade_next_rid failed\n"));
 388                 goto cancel;
 389         }
 390
 391         status = dbwrap_traverse(db, tdbsam_convert_one, &state, NULL);
 392         if (!NT_STATUS_IS_OK(status)) {
 393                 DEBUG(0, ("tdbsam_convert: traverse failed\n"));
 394                 goto cancel;
 395         }
 396
 397         if (!state.success) {
 398                 DEBUG(0, ("tdbsam_convert: Converting records failed\n"));
 399                 goto cancel;
 400         }
 401
 402         status = dbwrap_store_int32_bystring(db, TDBSAM_VERSION_STRING,
 403                                              TDBSAM_VERSION);
 404         if (!NT_STATUS_IS_OK(status)) {
 405                 DEBUG(0, ("tdbsam_convert: Could not store tdbsam version: "
 406                           "%s\n", nt_errstr(status)));
 407                 goto cancel;
 408         }
 409
 410         status = dbwrap_store_int32_bystring(db, TDBSAM_MINOR_VERSION_STRING,
 411                                              TDBSAM_MINOR_VERSION);
 412         if (!NT_STATUS_IS_OK(status)) {
 413                 DEBUG(0, ("tdbsam_convert: Could not store tdbsam minor "
 414                           "version: %s\n", nt_errstr(status)));
 415                 goto cancel;
 416         }
 417
 418         if (dbwrap_transaction_commit(db) != 0) {
 419                 DEBUG(0, ("tdbsam_convert: Could not commit transaction\n"));
 420                 return false;
 421         }
 422
 423         return true;
 424
 425  cancel:
 426         if (dbwrap_transaction_cancel(db) != 0) {
 427                 smb_panic("tdbsam_convert: transaction_cancel failed");
 428         }
 429
 430         return false;
 431 }
 432
 433 /*********************************************************************
 434  Open the tdbsam file based on the absolute path specified.
 435  Uses a reference count to allow multiple open calls.
 436 *********************************************************************/
 437
 438 static bool tdbsam_open( const char *name )
 439 {
 440         int32_t version;
 441         int32_t minor_version;
 442         NTSTATUS status;
 443
 444         /* check if we are already open */
 445
 446         if ( db_sam ) {
 447                 return true;
 448         }
 449
 450         /* Try to open tdb passwd.  Create a new one if necessary */
 451
 452         db_sam = db_open(NULL, name, 0, TDB_DEFAULT, O_CREAT|O_RDWR, 0600,
 453                          DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
 454         if (db_sam == NULL) {
 455                 DEBUG(0, ("tdbsam_open: Failed to open/create TDB passwd "
 456                           "[%s]\n", name));
 457                 return false;
 458         }
 459
 460         /* Check the version */
 461         status = dbwrap_fetch_int32_bystring(db_sam, TDBSAM_VERSION_STRING,
 462                                              &version);
 463         if (!NT_STATUS_IS_OK(status)) {
 464                 version = 0;    /* Version not found, assume version 0 */
 465         }
 466
 467         /* Get the minor version */
 468         status = dbwrap_fetch_int32_bystring(
 469                 db_sam, TDBSAM_MINOR_VERSION_STRING, &minor_version);
 470         if (!NT_STATUS_IS_OK(status)) {
 471                 minor_version = 0; /* Minor version not found, assume 0 */
 472         }
 473
 474         /* Compare the version */
 475         if (version > TDBSAM_VERSION) {
 476                 /* Version more recent than the latest known */
 477                 DEBUG(0, ("tdbsam_open: unknown version => %d\n", version));
 478                 TALLOC_FREE(db_sam);
 479                 return false;
 480         }
 481
 482         if ( version < TDBSAM_VERSION ||
 483                         (version == TDBSAM_VERSION &&
 484                          minor_version < TDBSAM_MINOR_VERSION) ) {
 485                 /*
 486                  * Ok - we think we're going to have to convert.
 487                  * Due to the backup process we now must do to
 488                  * upgrade we have to get a mutex and re-check
 489                  * the version. Someone else may have upgraded
 490                  * whilst we were checking.
 491                  */
 492
 493                 struct named_mutex *mtx = grab_named_mutex(NULL,
 494                                                 "tdbsam_upgrade_mutex",
 495                                                 600);
 496
 497                 if (!mtx) {
 498                         DEBUG(0, ("tdbsam_open: failed to grab mutex.\n"));
 499                         TALLOC_FREE(db_sam);
 500                         return false;
 501                 }
 502
 503                 /* Re-check the version */
 504                 status = dbwrap_fetch_int32_bystring(
 505                         db_sam, TDBSAM_VERSION_STRING, &version);
 506                 if (!NT_STATUS_IS_OK(status)) {
 507                         version = 0;    /* Version not found, assume version 0 */
 508                 }
 509
 510                 /* Re-check the minor version */
 511                 status = dbwrap_fetch_int32_bystring(
 512                         db_sam, TDBSAM_MINOR_VERSION_STRING, &minor_version);
 513                 if (!NT_STATUS_IS_OK(status)) {
 514                         minor_version = 0; /* Minor version not found, assume 0 */
 515                 }
 516
 517                 /* Compare the version */
 518                 if (version > TDBSAM_VERSION) {
 519                         /* Version more recent than the latest known */
 520                         DEBUG(0, ("tdbsam_open: unknown version => %d\n", version));
 521                         TALLOC_FREE(db_sam);
 522                         TALLOC_FREE(mtx);
 523                         return false;
 524                 }
 525
 526                 if ( version < TDBSAM_VERSION ||
 527                                 (version == TDBSAM_VERSION &&
 528                                  minor_version < TDBSAM_MINOR_VERSION) ) {
 529                         /*
 530                          * Note that minor versions we read that are greater
 531                          * than the current minor version we have hard coded
 532                          * are assumed to be compatible if they have the same
 533                          * major version. That allows previous versions of the
 534                          * passdb code that don't know about minor versions to
 535                          * still use this database. JRA.
 536                          */
 537
 538                         DEBUG(1, ("tdbsam_open: Converting version %d.%d database to "
 539                                   "version %d.%d.\n",
 540                                         version,
 541                                         minor_version,
 542                                         TDBSAM_VERSION,
 543                                         TDBSAM_MINOR_VERSION));
 544
 545                         if ( !tdbsam_convert(&db_sam, name, version) ) {
 546                                 DEBUG(0, ("tdbsam_open: Error when trying to convert "
 547                                           "tdbsam [%s]\n",name));
 548                                 TALLOC_FREE(db_sam);
 549                                 TALLOC_FREE(mtx);
 550                                 return false;
 551                         }
 552
 553                         DEBUG(3, ("TDBSAM converted successfully.\n"));
 554                 }
 555                 TALLOC_FREE(mtx);
 556         }
 557
 558         DEBUG(4,("tdbsam_open: successfully opened %s\n", name ));
 559
 560         return true;
 561 }
 562
 563 /******************************************************************
 564  Lookup a name in the SAM TDB
 565 ******************************************************************/
 566
 567 static NTSTATUS tdbsam_getsampwnam (struct pdb_methods *my_methods,
 568                                     struct samu *user, const char *sname)
 569 {
 570         TDB_DATA        data;
 571         fstring         keystr;
 572         fstring         name;
 573         NTSTATUS status;
 574
 575         if ( !user ) {
 576                 DEBUG(0,("pdb_getsampwnam: struct samu is NULL.\n"));
 577                 return NT_STATUS_NO_MEMORY;
 578         }
 579
 580         /* Data is stored in all lower-case */
 581         fstrcpy(name, sname);
 582         if (!strlower_m(name)) {
 583                 return NT_STATUS_INVALID_PARAMETER;
 584         }
 585
 586         /* set search key */
 587         fstr_sprintf(keystr, "%s%s", USERPREFIX, name);
 588
 589         /* open the database */
 590
 591         if ( !tdbsam_open( tdbsam_filename ) ) {
 592                 DEBUG(0,("tdbsam_getsampwnam: failed to open %s!\n", tdbsam_filename));
 593                 return NT_STATUS_ACCESS_DENIED;
 594         }
 595
 596         /* get the record */
 597
 598         status = dbwrap_fetch_bystring(db_sam, talloc_tos(), keystr, &data);
 599         if (!NT_STATUS_IS_OK(status)) {
 600                 DEBUG(5,("pdb_getsampwnam (TDB): error fetching database.\n"));
 601                 DEBUGADD(5, (" Key: %s\n", keystr));
 602                 return NT_STATUS_NO_SUCH_USER;
 603         }
 604
 605         if (data.dsize == 0) {
 606                 DEBUG(5, ("%s: Got 0-sized record for key %s\n", __func__,
 607                           keystr));
 608                 return NT_STATUS_NO_SUCH_USER;
 609         }
 610
 611         /* unpack the buffer */
 612
 613         if (!init_samu_from_buffer(user, SAMU_BUFFER_LATEST, data.dptr, data.dsize)) {
 614                 DEBUG(0,("pdb_getsampwent: Bad struct samu entry returned from TDB!\n"));
 615                 TALLOC_FREE(data.dptr);
 616                 return NT_STATUS_NO_MEMORY;
 617         }
 618
 619         /* success */
 620
 621         TALLOC_FREE(data.dptr);
 622
 623         return NT_STATUS_OK;
 624 }
 625
 626 /***************************************************************************
 627  Search by rid
 628  **************************************************************************/
 629
 630 static NTSTATUS tdbsam_getsampwrid (struct pdb_methods *my_methods,
 631                                     struct samu *user, uint32_t rid)
 632 {
 633         NTSTATUS                nt_status = NT_STATUS_UNSUCCESSFUL;
 634         TDB_DATA                data;
 635         fstring                 keystr;
 636         fstring                 name;
 637
 638         if ( !user ) {
 639                 DEBUG(0,("pdb_getsampwrid: struct samu is NULL.\n"));
 640                 return nt_status;
 641         }
 642
 643         /* set search key */
 644
 645         fstr_sprintf(keystr, "%s%.8x", RIDPREFIX, rid);
 646
 647         /* open the database */
 648
 649         if ( !tdbsam_open( tdbsam_filename ) ) {
 650                 DEBUG(0,("tdbsam_getsampwrid: failed to open %s!\n", tdbsam_filename));
 651                 return NT_STATUS_ACCESS_DENIED;
 652         }
 653
 654         /* get the record */
 655
 656         nt_status = dbwrap_fetch_bystring(db_sam, talloc_tos(), keystr, &data);
 657         if (!NT_STATUS_IS_OK(nt_status)) {
 658                 DEBUG(5,("pdb_getsampwrid (TDB): error looking up RID %d by key %s.\n", rid, keystr));
 659                 return nt_status;
 660         }
 661
 662         fstrcpy(name, (const char *)data.dptr);
 663         TALLOC_FREE(data.dptr);
 664
 665         return tdbsam_getsampwnam (my_methods, user, name);
 666 }
 667
 668 static NTSTATUS tdbsam_getsampwsid(struct pdb_methods *my_methods,
 669                                    struct samu * user, const struct dom_sid *sid)
 670 {
 671         uint32_t rid;
 672
 673         if ( !sid_peek_check_rid(get_global_sam_sid(), sid, &rid) )
 674                 return NT_STATUS_UNSUCCESSFUL;
 675
 676         return tdbsam_getsampwrid(my_methods, user, rid);
 677 }
 678
 679 static bool tdb_delete_samacct_only( struct samu *sam_pass )
 680 {
 681         fstring         keystr;
 682         fstring         name;
 683         NTSTATUS status;
 684
 685         fstrcpy(name, pdb_get_username(sam_pass));
 686         if (!strlower_m(name)) {
 687                 return false;
 688         }
 689
 690         /* set the search key */
 691
 692         fstr_sprintf(keystr, "%s%s", USERPREFIX, name);
 693
 694         /* it's outaa here!  8^) */
 695         if ( !tdbsam_open( tdbsam_filename ) ) {
 696                 DEBUG(0,("tdb_delete_samacct_only: failed to open %s!\n",
 697                          tdbsam_filename));
 698                 return false;
 699         }
 700
 701         status = dbwrap_delete_bystring(db_sam, keystr);
 702         if (!NT_STATUS_IS_OK(status)) {
 703                 DEBUG(5, ("Error deleting entry from tdb passwd "
 704                           "database: %s!\n", nt_errstr(status)));
 705                 return false;
 706         }
 707
 708         return true;
 709 }
 710
 711 /***************************************************************************
 712  Delete a struct samu records for the username and RID key
 713 ****************************************************************************/
 714
 715 static NTSTATUS tdbsam_delete_sam_account(struct pdb_methods *my_methods,
 716                                           struct samu *sam_pass)
 717 {
 718         NTSTATUS        nt_status = NT_STATUS_UNSUCCESSFUL;
 719         fstring         keystr;
 720         uint32_t        rid;
 721         fstring         name;
 722
 723         /* open the database */
 724
 725         if ( !tdbsam_open( tdbsam_filename ) ) {
 726                 DEBUG(0,("tdbsam_delete_sam_account: failed to open %s!\n",
 727                          tdbsam_filename));
 728                 return NT_STATUS_ACCESS_DENIED;
 729         }
 730
 731         fstrcpy(name, pdb_get_username(sam_pass));
 732         if (!strlower_m(name)) {
 733                 return NT_STATUS_INVALID_PARAMETER;
 734         }
 735
 736         /* set the search key */
 737
 738         fstr_sprintf(keystr, "%s%s", USERPREFIX, name);
 739
 740         rid = pdb_get_user_rid(sam_pass);
 741
 742         /* it's outaa here!  8^) */
 743
 744         if (dbwrap_transaction_start(db_sam) != 0) {
 745                 DEBUG(0, ("Could not start transaction\n"));
 746                 return NT_STATUS_UNSUCCESSFUL;
 747         }
 748
 749         nt_status = dbwrap_delete_bystring(db_sam, keystr);
 750         if (!NT_STATUS_IS_OK(nt_status)) {
 751                 DEBUG(5, ("Error deleting entry from tdb passwd "
 752                           "database: %s!\n", nt_errstr(nt_status)));
 753                 goto cancel;
 754         }
 755
 756         /* set the search key */
 757
 758         fstr_sprintf(keystr, "%s%.8x", RIDPREFIX, rid);
 759
 760         /* it's outaa here!  8^) */
 761
 762         nt_status = dbwrap_delete_bystring(db_sam, keystr);
 763         if (!NT_STATUS_IS_OK(nt_status)) {
 764                 DEBUG(5, ("Error deleting entry from tdb rid "
 765                           "database: %s!\n", nt_errstr(nt_status)));
 766                 goto cancel;
 767         }
 768
 769         if (dbwrap_transaction_commit(db_sam) != 0) {
 770                 DEBUG(0, ("Could not commit transaction\n"));
 771                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 772         }
 773
 774         return NT_STATUS_OK;
 775
 776  cancel:
 777         if (dbwrap_transaction_cancel(db_sam) != 0) {
 778                 smb_panic("transaction_cancel failed");
 779         }
 780
 781         return nt_status;
 782 }
 783
 784
 785 /***************************************************************************
 786  Update the TDB SAM account record only
 787  Assumes that the tdbsam is already open
 788 ****************************************************************************/
 789 static bool tdb_update_samacct_only( struct samu* newpwd, int flag )
 790 {
 791         TDB_DATA        data;
 792         uint8_t         *buf = NULL;
 793         fstring         keystr;
 794         fstring         name;
 795         bool            ret = false;
 796         NTSTATUS status;
 797
 798         /* copy the struct samu struct into a BYTE buffer for storage */
 799
 800         if ( (data.dsize=init_buffer_from_samu(&buf, newpwd, False)) == -1 ) {
 801                 DEBUG(0,("tdb_update_sam: ERROR - Unable to copy struct samu info BYTE buffer!\n"));
 802                 goto done;
 803         }
 804         data.dptr = buf;
 805
 806         fstrcpy(name, pdb_get_username(newpwd));
 807         if (!strlower_m(name)) {
 808                 goto done;
 809         }
 810
 811         DEBUG(5, ("Storing %saccount %s with RID %d\n",
 812                   flag == TDB_INSERT ? "(new) " : "", name,
 813                   pdb_get_user_rid(newpwd)));
 814
 815         /* setup the USER index key */
 816         fstr_sprintf(keystr, "%s%s", USERPREFIX, name);
 817
 818         /* add the account */
 819
 820         status = dbwrap_store_bystring(db_sam, keystr, data, flag);
 821         if (!NT_STATUS_IS_OK(status)) {
 822                 DEBUG(0, ("Unable to modify passwd TDB: %s!",
 823                           nt_errstr(status)));
 824                 goto done;
 825         }
 826
 827         ret = true;
 828
 829 done:
 830         /* cleanup */
 831         SAFE_FREE(buf);
 832         return ret;
 833 }
 834
 835 /***************************************************************************
 836  Update the TDB SAM RID record only
 837  Assumes that the tdbsam is already open
 838 ****************************************************************************/
 839 static bool tdb_update_ridrec_only( struct samu* newpwd, int flag )
 840 {
 841         TDB_DATA        data;
 842         fstring         keystr;
 843         fstring         name;
 844         NTSTATUS status;
 845
 846         fstrcpy(name, pdb_get_username(newpwd));
 847         if (!strlower_m(name)) {
 848                 return false;
 849         }
 850
 851         /* setup RID data */
 852         data = string_term_tdb_data(name);
 853
 854         /* setup the RID index key */
 855         fstr_sprintf(keystr, "%s%.8x", RIDPREFIX, pdb_get_user_rid(newpwd));
 856
 857         /* add the reference */
 858         status = dbwrap_store_bystring(db_sam, keystr, data, flag);
 859         if (!NT_STATUS_IS_OK(status)) {
 860                 DEBUG(0, ("Unable to modify TDB passwd: %s!\n",
 861                           nt_errstr(status)));
 862                 return false;
 863         }
 864
 865         return true;
 866
 867 }
 868
 869 /***************************************************************************
 870  Update the TDB SAM
 871 ****************************************************************************/
 872
 873 static bool tdb_update_sam(struct pdb_methods *my_methods, struct samu* newpwd,
 874                            int flag)
 875 {
 876         uint32_t oldrid;
 877         uint32_t newrid;
 878
 879         if (!(newrid = pdb_get_user_rid(newpwd))) {
 880                 DEBUG(0,("tdb_update_sam: struct samu (%s) with no RID!\n",
 881                          pdb_get_username(newpwd)));
 882                 return False;
 883         }
 884
 885         oldrid = newrid;
 886
 887         /* open the database */
 888
 889         if ( !tdbsam_open( tdbsam_filename ) ) {
 890                 DEBUG(0,("tdbsam_getsampwnam: failed to open %s!\n", tdbsam_filename));
 891                 return False;
 892         }
 893
 894         if (dbwrap_transaction_start(db_sam) != 0) {
 895                 DEBUG(0, ("Could not start transaction\n"));
 896                 return false;
 897         }
 898
 899         /* If we are updating, we may be changing this users RID. Retrieve the old RID
 900            so we can check. */
 901
 902         if (flag == TDB_MODIFY) {
 903                 struct samu *account = samu_new(talloc_tos());
 904                 if (account == NULL) {
 905                         DEBUG(0,("tdb_update_sam: samu_new() failed\n"));
 906                         goto cancel;
 907                 }
 908                 if (!NT_STATUS_IS_OK(tdbsam_getsampwnam(my_methods, account, pdb_get_username(newpwd)))) {
 909                         DEBUG(0,("tdb_update_sam: tdbsam_getsampwnam() for %s failed\n",
 910                                 pdb_get_username(newpwd)));
 911                         TALLOC_FREE(account);
 912                         goto cancel;
 913                 }
 914                 if (!(oldrid = pdb_get_user_rid(account))) {
 915                         DEBUG(0,("tdb_update_sam: pdb_get_user_rid() failed\n"));
 916                         TALLOC_FREE(account);
 917                         goto cancel;
 918                 }
 919                 TALLOC_FREE(account);
 920         }
 921
 922         /* Update the new samu entry. */
 923         if (!tdb_update_samacct_only(newpwd, flag)) {
 924                 goto cancel;
 925         }
 926
 927         /* Now take care of the case where the RID changed. We need
 928          * to delete the old RID key and add the new. */
 929
 930         if (flag == TDB_MODIFY && newrid != oldrid) {
 931                 fstring keystr;
 932
 933                 /* Delete old RID key */
 934                 DEBUG(10, ("tdb_update_sam: Deleting key for RID %u\n", oldrid));
 935                 fstr_sprintf(keystr, "%s%.8x", RIDPREFIX, oldrid);
 936                 if (!NT_STATUS_IS_OK(dbwrap_delete_bystring(db_sam, keystr))) {
 937                         DEBUG(0, ("tdb_update_sam: Can't delete %s\n", keystr));
 938                         goto cancel;
 939                 }
 940                 /* Insert new RID key */
 941                 DEBUG(10, ("tdb_update_sam: Inserting key for RID %u\n", newrid));
 942                 if (!tdb_update_ridrec_only(newpwd, TDB_INSERT)) {
 943                         goto cancel;
 944                 }
 945         } else {
 946                 DEBUG(10, ("tdb_update_sam: %s key for RID %u\n",
 947                         flag == TDB_MODIFY ? "Updating" : "Inserting", newrid));
 948                 if (!tdb_update_ridrec_only(newpwd, flag)) {
 949                         goto cancel;
 950                 }
 951         }
 952
 953         if (dbwrap_transaction_commit(db_sam) != 0) {
 954                 DEBUG(0, ("Could not commit transaction\n"));
 955                 return false;
 956         }
 957
 958         return true;
 959
 960  cancel:
 961         if (dbwrap_transaction_cancel(db_sam) != 0) {
 962                 smb_panic("transaction_cancel failed");
 963         }
 964         return false;
 965 }
 966
 967 /***************************************************************************
 968  Modifies an existing struct samu
 969 ****************************************************************************/
 970
 971 static NTSTATUS tdbsam_update_sam_account (struct pdb_methods *my_methods, struct samu *newpwd)
 972 {
 973         if ( !tdb_update_sam(my_methods, newpwd, TDB_MODIFY) )
 974                 return NT_STATUS_UNSUCCESSFUL;
 975
 976         return NT_STATUS_OK;
 977 }
 978
 979 /***************************************************************************
 980  Adds an existing struct samu
 981 ****************************************************************************/
 982
 983 static NTSTATUS tdbsam_add_sam_account (struct pdb_methods *my_methods, struct samu *newpwd)
 984 {
 985         if ( !tdb_update_sam(my_methods, newpwd, TDB_INSERT) )
 986                 return NT_STATUS_UNSUCCESSFUL;
 987
 988         return NT_STATUS_OK;
 989 }
 990
 991 /***************************************************************************
 992  Renames a struct samu
 993  - check for the posix user/rename user script
 994  - Add and lock the new user record
 995  - rename the posix user
 996  - rewrite the rid->username record
 997  - delete the old user
 998  - unlock the new user record
 999 ***************************************************************************/
1000 static NTSTATUS tdbsam_rename_sam_account(struct pdb_methods *my_methods,
1001                                           struct samu *old_acct,
1002                                           const char *newname)
1003 {
1004         struct samu      *new_acct = NULL;
1005         char *rename_script = NULL;
1006         int              rename_ret;
1007         fstring          oldname_lower;
1008         fstring          newname_lower;
1009
1010         /* can't do anything without an external script */
1011
1012         if ( !(new_acct = samu_new( talloc_tos() )) ) {
1013                 return NT_STATUS_NO_MEMORY;
1014         }
1015
1016         rename_script = lp_rename_user_script(new_acct);
1017         if (!rename_script) {
1018                 TALLOC_FREE(new_acct);
1019                 return NT_STATUS_NO_MEMORY;
1020         }
1021         if (!*rename_script) {
1022                 TALLOC_FREE(new_acct);
1023                 return NT_STATUS_ACCESS_DENIED;
1024         }
1025
1026         if ( !pdb_copy_sam_account(new_acct, old_acct)
1027                 || !pdb_set_username(new_acct, newname, PDB_CHANGED))
1028         {
1029                 TALLOC_FREE(new_acct);
1030                 return NT_STATUS_NO_MEMORY;
1031         }
1032
1033         /* open the database */
1034         if ( !tdbsam_open( tdbsam_filename ) ) {
1035                 DEBUG(0, ("tdbsam_getsampwnam: failed to open %s!\n",
1036                           tdbsam_filename));
1037                 TALLOC_FREE(new_acct);
1038                 return NT_STATUS_ACCESS_DENIED;
1039         }
1040
1041         if (dbwrap_transaction_start(db_sam) != 0) {
1042                 DEBUG(0, ("Could not start transaction\n"));
1043                 TALLOC_FREE(new_acct);
1044                 return NT_STATUS_ACCESS_DENIED;
1045
1046         }
1047
1048         /* add the new account and lock it */
1049         if ( !tdb_update_samacct_only(new_acct, TDB_INSERT) ) {
1050                 goto cancel;
1051         }
1052
1053         /* Rename the posix user.  Follow the semantics of _samr_create_user()
1054            so that we lower case the posix name but preserve the case in passdb */
1055
1056         fstrcpy( oldname_lower, pdb_get_username(old_acct) );
1057         if (!strlower_m( oldname_lower )) {
1058                 goto cancel;
1059         }
1060
1061         fstrcpy( newname_lower, newname );
1062         if (!strlower_m( newname_lower )) {
1063                 goto cancel;
1064         }
1065
1066         rename_script = talloc_string_sub2(new_acct,
1067                                 rename_script,
1068                                 "%unew",
1069                                 newname_lower,
1070                                 true,
1071                                 false,
1072                                 true);
1073         if (!rename_script) {
1074                 goto cancel;
1075         }
1076         rename_script = talloc_string_sub2(new_acct,
1077                                 rename_script,
1078                                 "%uold",
1079                                 oldname_lower,
1080                                 true,
1081                                 false,
1082                                 true);
1083         if (!rename_script) {
1084                 goto cancel;
1085         }
1086         rename_ret = smbrun(rename_script, NULL, NULL);
1087
1088         DEBUG(rename_ret ? 0 : 3,("Running the command `%s' gave %d\n",
1089                                 rename_script, rename_ret));
1090
1091         if (rename_ret != 0) {
1092                 goto cancel;
1093         }
1094
1095         smb_nscd_flush_user_cache();
1096
1097         /* rewrite the rid->username record */
1098
1099         if ( !tdb_update_ridrec_only( new_acct, TDB_MODIFY) ) {
1100                 goto cancel;
1101         }
1102
1103         tdb_delete_samacct_only( old_acct );
1104
1105         if (dbwrap_transaction_commit(db_sam) != 0) {
1106                 /*
1107                  * Ok, we're screwed. We've changed the posix account, but
1108                  * could not adapt passdb.tdb. Shall we change the posix
1109                  * account back?
1110                  */
1111                 DEBUG(0, ("transaction_commit failed\n"));
1112                 TALLOC_FREE(new_acct);
1113                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1114         }
1115
1116         TALLOC_FREE(new_acct );
1117         return NT_STATUS_OK;
1118
1119  cancel:
1120         if (dbwrap_transaction_cancel(db_sam) != 0) {
1121                 smb_panic("transaction_cancel failed");
1122         }
1123
1124         TALLOC_FREE(new_acct);
1125
1126         return NT_STATUS_ACCESS_DENIED;
1127 }
1128
1129 static uint32_t tdbsam_capabilities(struct pdb_methods *methods)
1130 {
1131         return PDB_CAP_STORE_RIDS;
1132 }
1133
1134 static bool tdbsam_new_rid(struct pdb_methods *methods, uint32_t *prid)
1135 {
1136         uint32_t rid;
1137         NTSTATUS status;
1138
1139         rid = BASE_RID;         /* Default if not set */
1140
1141         if (!tdbsam_open(tdbsam_filename)) {
1142                 DEBUG(0,("tdbsam_new_rid: failed to open %s!\n",
1143                         tdbsam_filename));
1144                 return false;
1145         }
1146
1147         status = dbwrap_trans_change_uint32_atomic_bystring(
1148                 db_sam, NEXT_RID_STRING, &rid, 1);
1149         if (!NT_STATUS_IS_OK(status)) {
1150                 DEBUG(3, ("tdbsam_new_rid: Failed to increase %s: %s\n",
1151                         NEXT_RID_STRING, nt_errstr(status)));
1152                 return false;
1153         }
1154
1155         *prid = rid;
1156
1157         return true;
1158 }
1159
1160 struct tdbsam_search_state {
1161         struct pdb_methods *methods;
1162         uint32_t acct_flags;
1163
1164         uint32_t *rids;
1165         uint32_t num_rids;
1166         ssize_t array_size;
1167         uint32_t current;
1168 };
1169
1170 static int tdbsam_collect_rids(struct db_record *rec, void *private_data)
1171 {
1172         struct tdbsam_search_state *state = talloc_get_type_abort(
1173                 private_data, struct tdbsam_search_state);
1174         size_t prefixlen = strlen(RIDPREFIX);
1175         uint32_t rid;
1176         TDB_DATA key;
1177
1178         key = dbwrap_record_get_key(rec);
1179
1180         if ((key.dsize < prefixlen)
1181             || (strncmp((char *)key.dptr, RIDPREFIX, prefixlen))) {
1182                 return 0;
1183         }
1184
1185         rid = strtoul((char *)key.dptr+prefixlen, NULL, 16);
1186
1187         ADD_TO_LARGE_ARRAY(state, uint32_t, rid, &state->rids, &state->num_rids,
1188                            &state->array_size);
1189
1190         return 0;
1191 }
1192
1193 static void tdbsam_search_end(struct pdb_search *search)
1194 {
1195         struct tdbsam_search_state *state = talloc_get_type_abort(
1196                 search->private_data, struct tdbsam_search_state);
1197         TALLOC_FREE(state);
1198 }
1199
1200 static bool tdbsam_search_next_entry(struct pdb_search *search,
1201                                      struct samr_displayentry *entry)
1202 {
1203         struct tdbsam_search_state *state = talloc_get_type_abort(
1204                 search->private_data, struct tdbsam_search_state);
1205         struct samu *user = NULL;
1206         NTSTATUS status;
1207         uint32_t rid;
1208
1209  again:
1210         TALLOC_FREE(user);
1211         user = samu_new(talloc_tos());
1212         if (user == NULL) {
1213                 DEBUG(0, ("samu_new failed\n"));
1214                 return false;
1215         }
1216
1217         if (state->current == state->num_rids) {
1218                 TALLOC_FREE(user);
1219                 return false;
1220         }
1221
1222         rid = state->rids[state->current++];
1223
1224         status = tdbsam_getsampwrid(state->methods, user, rid);
1225
1226         if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
1227                 /*
1228                  * Someone has deleted that user since we listed the RIDs
1229                  */
1230                 goto again;
1231         }
1232
1233         if (!NT_STATUS_IS_OK(status)) {
1234                 DEBUG(10, ("tdbsam_getsampwrid failed: %s\n",
1235                            nt_errstr(status)));
1236                 TALLOC_FREE(user);
1237                 return false;
1238         }
1239
1240         if ((state->acct_flags != 0) &&
1241             ((state->acct_flags & pdb_get_acct_ctrl(user)) == 0)) {
1242                 goto again;
1243         }
1244
1245         entry->acct_flags = pdb_get_acct_ctrl(user);
1246         entry->rid = rid;
1247         entry->account_name = talloc_strdup(search, pdb_get_username(user));
1248         entry->fullname = talloc_strdup(search, pdb_get_fullname(user));
1249         entry->description = talloc_strdup(search, pdb_get_acct_desc(user));
1250
1251         TALLOC_FREE(user);
1252
1253         if ((entry->account_name == NULL) || (entry->fullname == NULL)
1254             || (entry->description == NULL)) {
1255                 DEBUG(0, ("talloc_strdup failed\n"));
1256                 return false;
1257         }
1258
1259         return true;
1260 }
1261
1262 static bool tdbsam_search_users(struct pdb_methods *methods,
1263                                 struct pdb_search *search,
1264                                 uint32_t acct_flags)
1265 {
1266         struct tdbsam_search_state *state;
1267
1268         if (!tdbsam_open(tdbsam_filename)) {
1269                 DEBUG(0,("tdbsam_getsampwnam: failed to open %s!\n",
1270                          tdbsam_filename));
1271                 return false;
1272         }
1273
1274         state = talloc_zero(search, struct tdbsam_search_state);
1275         if (state == NULL) {
1276                 DEBUG(0, ("talloc failed\n"));
1277                 return false;
1278         }
1279         state->acct_flags = acct_flags;
1280         state->methods = methods;
1281
1282         dbwrap_traverse_read(db_sam, tdbsam_collect_rids, state, NULL);
1283
1284         search->private_data = state;
1285         search->next_entry = tdbsam_search_next_entry;
1286         search->search_end = tdbsam_search_end;
1287
1288         return true;
1289 }
1290
1291 static bool tdbsam_is_responsible_for_builtin(struct pdb_methods *m)
1292 {
1293         return map_builtin;
1294 }
1295
1296 /*********************************************************************
1297  Initialize the tdb sam backend.  Setup the dispath table of methods,
1298  open the tdb, etc...
1299 *********************************************************************/
1300
1301 static NTSTATUS pdb_init_tdbsam(struct pdb_methods **pdb_method, const char *location)
1302 {
1303         NTSTATUS nt_status;
1304         char *tdbfile = NULL;
1305         const char *pfile = location;
1306
1307         if (!NT_STATUS_IS_OK(nt_status = make_pdb_method( pdb_method ))) {
1308                 return nt_status;
1309         }
1310
1311         (*pdb_method)->name = "tdbsam";
1312
1313         (*pdb_method)->getsampwnam = tdbsam_getsampwnam;
1314         (*pdb_method)->getsampwsid = tdbsam_getsampwsid;
1315         (*pdb_method)->add_sam_account = tdbsam_add_sam_account;
1316         (*pdb_method)->update_sam_account = tdbsam_update_sam_account;
1317         (*pdb_method)->delete_sam_account = tdbsam_delete_sam_account;
1318         (*pdb_method)->rename_sam_account = tdbsam_rename_sam_account;
1319         (*pdb_method)->search_users = tdbsam_search_users;
1320
1321         (*pdb_method)->capabilities = tdbsam_capabilities;
1322         (*pdb_method)->new_rid = tdbsam_new_rid;
1323
1324         (*pdb_method)->is_responsible_for_builtin =
1325                                         tdbsam_is_responsible_for_builtin;
1326         map_builtin = lp_parm_bool(-1, "tdbsam", "map builtin", true);
1327
1328         /* save the path for later */
1329
1330         if (!location) {
1331                 if (asprintf(&tdbfile, "%s/%s", lp_private_dir(),
1332                              PASSDB_FILE_NAME) < 0) {
1333                         return NT_STATUS_NO_MEMORY;
1334                 }
1335                 pfile = tdbfile;
1336         }
1337         tdbsam_filename = SMB_STRDUP(pfile);
1338         if (!tdbsam_filename) {
1339                 return NT_STATUS_NO_MEMORY;
1340         }
1341         SAFE_FREE(tdbfile);
1342
1343         /* no private data */
1344
1345         (*pdb_method)->private_data      = NULL;
1346         (*pdb_method)->free_private_data = NULL;
1347
1348         return NT_STATUS_OK;
1349 }
1350
1351 NTSTATUS pdb_tdbsam_init(void)
1352 {
1353         return smb_register_passdb(PASSDB_INTERFACE_VERSION, "tdbsam", pdb_init_tdbsam);
1354 }