source3/winbindd/idmap_tdb2.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    idmap TDB2 backend, used for clustered Samba setups.
   5
   6    This uses dbwrap to access tdb files. The location can be set
   7    using tdb:idmap2.tdb =" in smb.conf
   8
   9    Copyright (C) Andrew Tridgell 2007
  10
  11    This is heavily based upon idmap_tdb.c, which is:
  12
  13    Copyright (C) Tim Potter 2000
  14    Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
  15    Copyright (C) Jeremy Allison 2006
  16    Copyright (C) Simo Sorce 2003-2006
  17    Copyright (C) Michael Adam 2009-2010
  18
  19    This program is free software; you can redistribute it and/or modify
  20    it under the terms of the GNU General Public License as published by
  21    the Free Software Foundation; either version 2 of the License, or
  22    (at your option) any later version.
  23
  24    This program is distributed in the hope that it will be useful,
  25    but WITHOUT ANY WARRANTY; without even the implied warranty of
  26    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27    GNU General Public License for more details.
  28
  29    You should have received a copy of the GNU General Public License
  30    along with this program; if not, write to the Free Software
  31    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  32 */
  33
  34 #include "includes.h"
  35 #include "system/filesys.h"
  36 #include "winbindd.h"
  37 #include "idmap.h"
  38 #include "idmap_rw.h"
  39 #include "dbwrap/dbwrap.h"
  40 #include "dbwrap/dbwrap_open.h"
  41 #include "../libcli/security/dom_sid.h"
  42 #include "util_tdb.h"
  43
  44 #undef DBGC_CLASS
  45 #define DBGC_CLASS DBGC_IDMAP
  46
  47 struct idmap_tdb2_context {
  48         struct db_context *db;
  49         const char *script; /* script to provide idmaps */
  50         struct idmap_rw_ops *rw_ops;
  51 };
  52
  53 /* High water mark keys */
  54 #define HWM_GROUP  "GROUP HWM"
  55 #define HWM_USER   "USER HWM"
  56
  57
  58 /*
  59  * check and initialize high/low water marks in the db
  60  */
  61 static NTSTATUS idmap_tdb2_init_hwm(struct idmap_domain *dom)
  62 {
  63         NTSTATUS status;
  64         uint32 low_id;
  65         struct idmap_tdb2_context *ctx;
  66
  67         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
  68
  69         /* Create high water marks for group and user id */
  70
  71         status = dbwrap_fetch_uint32(ctx->db, HWM_USER, &low_id);
  72         if (!NT_STATUS_IS_OK(status) || (low_id < dom->low_id)) {
  73                 status = dbwrap_trans_store_uint32(ctx->db, HWM_USER,
  74                                                    dom->low_id);
  75                 if (!NT_STATUS_IS_OK(status)) {
  76                         DEBUG(0, ("Unable to initialise user hwm in idmap "
  77                                   "database: %s\n", nt_errstr(status)));
  78                         return NT_STATUS_INTERNAL_DB_ERROR;
  79                 }
  80         }
  81
  82         status = dbwrap_fetch_uint32(ctx->db, HWM_GROUP, &low_id);
  83         if (!NT_STATUS_IS_OK(status) || (low_id < dom->low_id)) {
  84                 status = dbwrap_trans_store_uint32(ctx->db, HWM_GROUP,
  85                                                    dom->low_id);
  86                 if (!NT_STATUS_IS_OK(status)) {
  87                         DEBUG(0, ("Unable to initialise group hwm in idmap "
  88                                   "database: %s\n", nt_errstr(status)));
  89                         return NT_STATUS_INTERNAL_DB_ERROR;
  90                 }
  91         }
  92
  93         return NT_STATUS_OK;
  94 }
  95
  96
  97 /*
  98   open the permanent tdb
  99  */
 100 static NTSTATUS idmap_tdb2_open_db(struct idmap_domain *dom)
 101 {
 102         char *db_path;
 103         struct idmap_tdb2_context *ctx;
 104
 105         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 106
 107         if (ctx->db) {
 108                 /* its already open */
 109                 return NT_STATUS_OK;
 110         }
 111
 112         db_path = talloc_asprintf(NULL, "%s/idmap2.tdb", lp_private_dir());
 113         NT_STATUS_HAVE_NO_MEMORY(db_path);
 114
 115         /* Open idmap repository */
 116         ctx->db = db_open(ctx, db_path, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644,
 117                           DBWRAP_LOCK_ORDER_1);
 118         TALLOC_FREE(db_path);
 119
 120         if (ctx->db == NULL) {
 121                 DEBUG(0, ("Unable to open idmap_tdb2 database '%s'\n",
 122                           db_path));
 123                 return NT_STATUS_UNSUCCESSFUL;
 124         }
 125
 126         return idmap_tdb2_init_hwm(dom);
 127 }
 128
 129
 130 /*
 131   Allocate a new id.
 132 */
 133
 134 struct idmap_tdb2_allocate_id_context {
 135         const char *hwmkey;
 136         const char *hwmtype;
 137         uint32_t high_hwm;
 138         uint32_t hwm;
 139 };
 140
 141 static NTSTATUS idmap_tdb2_allocate_id_action(struct db_context *db,
 142                                               void *private_data)
 143 {
 144         NTSTATUS ret;
 145         struct idmap_tdb2_allocate_id_context *state;
 146         uint32_t hwm;
 147
 148         state = (struct idmap_tdb2_allocate_id_context *)private_data;
 149
 150         ret = dbwrap_fetch_uint32(db, state->hwmkey, &hwm);
 151         if (!NT_STATUS_IS_OK(ret)) {
 152                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 153                 goto done;
 154         }
 155
 156         /* check it is in the range */
 157         if (hwm > state->high_hwm) {
 158                 DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
 159                           state->hwmtype, (unsigned long)state->high_hwm));
 160                 ret = NT_STATUS_UNSUCCESSFUL;
 161                 goto done;
 162         }
 163
 164         /* fetch a new id and increment it */
 165         ret = dbwrap_trans_change_uint32_atomic(db, state->hwmkey, &hwm, 1);
 166         if (!NT_STATUS_IS_OK(ret)) {
 167                 DEBUG(1, ("Fatal error while fetching a new %s value\n!",
 168                           state->hwmtype));
 169                 goto done;
 170         }
 171
 172         /* recheck it is in the range */
 173         if (hwm > state->high_hwm) {
 174                 DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
 175                           state->hwmtype, (unsigned long)state->high_hwm));
 176                 ret = NT_STATUS_UNSUCCESSFUL;
 177                 goto done;
 178         }
 179
 180         ret = NT_STATUS_OK;
 181         state->hwm = hwm;
 182
 183 done:
 184         return ret;
 185 }
 186
 187 static NTSTATUS idmap_tdb2_allocate_id(struct idmap_domain *dom,
 188                                        struct unixid *xid)
 189 {
 190         const char *hwmkey;
 191         const char *hwmtype;
 192         uint32_t high_hwm;
 193         uint32_t hwm = 0;
 194         NTSTATUS status;
 195         struct idmap_tdb2_allocate_id_context state;
 196         struct idmap_tdb2_context *ctx;
 197
 198         status = idmap_tdb2_open_db(dom);
 199         NT_STATUS_NOT_OK_RETURN(status);
 200
 201         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 202
 203         /* Get current high water mark */
 204         switch (xid->type) {
 205
 206         case ID_TYPE_UID:
 207                 hwmkey = HWM_USER;
 208                 hwmtype = "UID";
 209                 break;
 210
 211         case ID_TYPE_GID:
 212                 hwmkey = HWM_GROUP;
 213                 hwmtype = "GID";
 214                 break;
 215
 216         default:
 217                 DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
 218                 return NT_STATUS_INVALID_PARAMETER;
 219         }
 220
 221         high_hwm = dom->high_id;
 222
 223         state.hwm = hwm;
 224         state.high_hwm = high_hwm;
 225         state.hwmtype = hwmtype;
 226         state.hwmkey = hwmkey;
 227
 228         status = dbwrap_trans_do(ctx->db, idmap_tdb2_allocate_id_action,
 229                                  &state);
 230
 231         if (NT_STATUS_IS_OK(status)) {
 232                 xid->id = state.hwm;
 233                 DEBUG(10,("New %s = %d\n", hwmtype, state.hwm));
 234         } else {
 235                 DEBUG(1, ("Error allocating a new %s\n", hwmtype));
 236         }
 237
 238         return status;
 239 }
 240
 241 /**
 242  * Allocate a new unix-ID.
 243  * For now this is for the default idmap domain only.
 244  * Should be extended later on.
 245  */
 246 static NTSTATUS idmap_tdb2_get_new_id(struct idmap_domain *dom,
 247                                       struct unixid *id)
 248 {
 249         NTSTATUS ret;
 250
 251         if (!strequal(dom->name, "*")) {
 252                 DEBUG(3, ("idmap_tdb2_get_new_id: "
 253                           "Refusing creation of mapping for domain'%s'. "
 254                           "Currently only supported for the default "
 255                           "domain \"*\".\n",
 256                            dom->name));
 257                 return NT_STATUS_NOT_IMPLEMENTED;
 258         }
 259
 260         ret = idmap_tdb2_allocate_id(dom, id);
 261
 262         return ret;
 263 }
 264
 265 /*
 266   IDMAP MAPPING TDB BACKEND
 267 */
 268
 269 static NTSTATUS idmap_tdb2_set_mapping(struct idmap_domain *dom,
 270                                        const struct id_map *map);
 271
 272 /*
 273   Initialise idmap database.
 274 */
 275 static NTSTATUS idmap_tdb2_db_init(struct idmap_domain *dom)
 276 {
 277         NTSTATUS ret;
 278         struct idmap_tdb2_context *ctx;
 279         char *config_option = NULL;
 280         const char * idmap_script = NULL;
 281
 282         ctx = talloc_zero(dom, struct idmap_tdb2_context);
 283         if ( ! ctx) {
 284                 DEBUG(0, ("Out of memory!\n"));
 285                 return NT_STATUS_NO_MEMORY;
 286         }
 287
 288         config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
 289         if (config_option == NULL) {
 290                 DEBUG(0, ("Out of memory!\n"));
 291                 ret = NT_STATUS_NO_MEMORY;
 292                 goto failed;
 293         }
 294         ctx->script = lp_parm_const_string(-1, config_option, "script", NULL);
 295         talloc_free(config_option);
 296
 297         idmap_script = lp_parm_const_string(-1, "idmap", "script", NULL);
 298         if (idmap_script != NULL) {
 299                 DEBUG(0, ("Warning: 'idmap:script' is deprecated. "
 300                           " Please use 'idmap config * : script' instead!\n"));
 301         }
 302
 303         if (strequal(dom->name, "*") && ctx->script == NULL) {
 304                 /* fall back to idmap:script for backwards compatibility */
 305                 ctx->script = idmap_script;
 306         }
 307
 308         if (ctx->script) {
 309                 DEBUG(1, ("using idmap script '%s'\n", ctx->script));
 310         }
 311
 312         ctx->rw_ops = talloc_zero(ctx, struct idmap_rw_ops);
 313         if (ctx->rw_ops == NULL) {
 314                 DEBUG(0, ("Out of memory!\n"));
 315                 ret = NT_STATUS_NO_MEMORY;
 316                 goto failed;
 317         }
 318
 319         ctx->rw_ops->get_new_id = idmap_tdb2_get_new_id;
 320         ctx->rw_ops->set_mapping = idmap_tdb2_set_mapping;
 321
 322         dom->private_data = ctx;
 323
 324         ret = idmap_tdb2_open_db(dom);
 325         if (!NT_STATUS_IS_OK(ret)) {
 326                 goto failed;
 327         }
 328
 329         return NT_STATUS_OK;
 330
 331 failed:
 332         talloc_free(ctx);
 333         return ret;
 334 }
 335
 336
 337 /**
 338  * store a mapping in the database.
 339  */
 340
 341 struct idmap_tdb2_set_mapping_context {
 342         const char *ksidstr;
 343         const char *kidstr;
 344 };
 345
 346 static NTSTATUS idmap_tdb2_set_mapping_action(struct db_context *db,
 347                                               void *private_data)
 348 {
 349         TDB_DATA data;
 350         NTSTATUS ret;
 351         struct idmap_tdb2_set_mapping_context *state;
 352         TALLOC_CTX *tmp_ctx = talloc_stackframe();
 353
 354         state = (struct idmap_tdb2_set_mapping_context *)private_data;
 355
 356         DEBUG(10, ("Storing %s <-> %s map\n", state->ksidstr, state->kidstr));
 357
 358         /* check wheter sid mapping is already present in db */
 359         ret = dbwrap_fetch_bystring(db, tmp_ctx, state->ksidstr, &data);
 360         if (!NT_STATUS_IS_OK(ret)) {
 361                 ret = NT_STATUS_OBJECT_NAME_COLLISION;
 362                 goto done;
 363         }
 364
 365         ret = dbwrap_store_bystring(db, state->ksidstr,
 366                                     string_term_tdb_data(state->kidstr),
 367                                     TDB_INSERT);
 368         if (!NT_STATUS_IS_OK(ret)) {
 369                 DEBUG(0, ("Error storing SID -> ID: %s\n", nt_errstr(ret)));
 370                 goto done;
 371         }
 372
 373         ret = dbwrap_store_bystring(db, state->kidstr,
 374                                     string_term_tdb_data(state->ksidstr),
 375                                     TDB_INSERT);
 376         if (!NT_STATUS_IS_OK(ret)) {
 377                 DEBUG(0, ("Error storing ID -> SID: %s\n", nt_errstr(ret)));
 378                 /* try to remove the previous stored SID -> ID map */
 379                 dbwrap_delete_bystring(db, state->ksidstr);
 380                 goto done;
 381         }
 382
 383         DEBUG(10,("Stored %s <-> %s\n", state->ksidstr, state->kidstr));
 384
 385 done:
 386         talloc_free(tmp_ctx);
 387         return ret;
 388 }
 389
 390 static NTSTATUS idmap_tdb2_set_mapping(struct idmap_domain *dom, const struct id_map *map)
 391 {
 392         struct idmap_tdb2_context *ctx;
 393         NTSTATUS ret;
 394         char *ksidstr, *kidstr;
 395         struct idmap_tdb2_set_mapping_context state;
 396
 397         if (!map || !map->sid) {
 398                 return NT_STATUS_INVALID_PARAMETER;
 399         }
 400
 401         ksidstr = kidstr = NULL;
 402
 403         /* TODO: should we filter a set_mapping using low/high filters ? */
 404
 405         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 406
 407         switch (map->xid.type) {
 408
 409         case ID_TYPE_UID:
 410                 kidstr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
 411                 break;
 412
 413         case ID_TYPE_GID:
 414                 kidstr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
 415                 break;
 416
 417         default:
 418                 DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
 419                 return NT_STATUS_INVALID_PARAMETER;
 420         }
 421
 422         if (kidstr == NULL) {
 423                 DEBUG(0, ("ERROR: Out of memory!\n"));
 424                 ret = NT_STATUS_NO_MEMORY;
 425                 goto done;
 426         }
 427
 428         ksidstr = sid_string_talloc(ctx, map->sid);
 429         if (ksidstr == NULL) {
 430                 DEBUG(0, ("Out of memory!\n"));
 431                 ret = NT_STATUS_NO_MEMORY;
 432                 goto done;
 433         }
 434
 435         state.ksidstr = ksidstr;
 436         state.kidstr = kidstr;
 437
 438         ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 439                               &state);
 440
 441 done:
 442         talloc_free(ksidstr);
 443         talloc_free(kidstr);
 444         return ret;
 445 }
 446
 447 /**
 448  * Create a new mapping for an unmapped SID, also allocating a new ID.
 449  * This should be run inside a transaction.
 450  *
 451  * TODO:
 452 *  Properly integrate this with multi domain idmap config:
 453  * Currently, the allocator is default-config only.
 454  */
 455 static NTSTATUS idmap_tdb2_new_mapping(struct idmap_domain *dom, struct id_map *map)
 456 {
 457         NTSTATUS ret;
 458         struct idmap_tdb2_context *ctx;
 459
 460         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 461
 462         ret = idmap_rw_new_mapping(dom, ctx->rw_ops, map);
 463
 464         return ret;
 465 }
 466
 467
 468 /*
 469   run a script to perform a mapping
 470
 471   The script should the following command lines:
 472
 473       SIDTOID S-1-xxxx
 474       IDTOSID UID xxxx
 475       IDTOSID GID xxxx
 476
 477   and should return one of the following as a single line of text
 478      UID:xxxx
 479      GID:xxxx
 480      SID:xxxx
 481      ERR:xxxx
 482  */
 483 static NTSTATUS idmap_tdb2_script(struct idmap_tdb2_context *ctx, struct id_map *map,
 484                                   const char *fmt, ...)
 485 {
 486         va_list ap;
 487         char *cmd;
 488         FILE *p;
 489         char line[64];
 490         unsigned long v;
 491
 492         cmd = talloc_asprintf(ctx, "%s ", ctx->script);
 493         NT_STATUS_HAVE_NO_MEMORY(cmd);
 494
 495         va_start(ap, fmt);
 496         cmd = talloc_vasprintf_append(cmd, fmt, ap);
 497         va_end(ap);
 498         NT_STATUS_HAVE_NO_MEMORY(cmd);
 499
 500         p = popen(cmd, "r");
 501         talloc_free(cmd);
 502         if (p == NULL) {
 503                 return NT_STATUS_NONE_MAPPED;
 504         }
 505
 506         if (fgets(line, sizeof(line)-1, p) == NULL) {
 507                 pclose(p);
 508                 return NT_STATUS_NONE_MAPPED;
 509         }
 510         pclose(p);
 511
 512         DEBUG(10,("idmap script gave: %s\n", line));
 513
 514         if (sscanf(line, "UID:%lu", &v) == 1) {
 515                 map->xid.id   = v;
 516                 map->xid.type = ID_TYPE_UID;
 517         } else if (sscanf(line, "GID:%lu", &v) == 1) {
 518                 map->xid.id   = v;
 519                 map->xid.type = ID_TYPE_GID;
 520         } else if (strncmp(line, "SID:S-", 6) == 0) {
 521                 if (!string_to_sid(map->sid, &line[4])) {
 522                         DEBUG(0,("Bad SID in '%s' from idmap script %s\n",
 523                                  line, ctx->script));
 524                         return NT_STATUS_NONE_MAPPED;
 525                 }
 526         } else {
 527                 DEBUG(0,("Bad reply '%s' from idmap script %s\n",
 528                          line, ctx->script));
 529                 return NT_STATUS_NONE_MAPPED;
 530         }
 531
 532         return NT_STATUS_OK;
 533 }
 534
 535
 536
 537 /*
 538   Single id to sid lookup function.
 539 */
 540 static NTSTATUS idmap_tdb2_id_to_sid(struct idmap_domain *dom, struct id_map *map)
 541 {
 542         NTSTATUS ret;
 543         TDB_DATA data;
 544         char *keystr;
 545         NTSTATUS status;
 546         struct idmap_tdb2_context *ctx;
 547
 548
 549         if (!dom || !map) {
 550                 return NT_STATUS_INVALID_PARAMETER;
 551         }
 552
 553         status = idmap_tdb2_open_db(dom);
 554         NT_STATUS_NOT_OK_RETURN(status);
 555
 556         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 557
 558         /* apply filters before checking */
 559         if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 560                 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 561                                 map->xid.id, dom->low_id, dom->high_id));
 562                 return NT_STATUS_NONE_MAPPED;
 563         }
 564
 565         switch (map->xid.type) {
 566
 567         case ID_TYPE_UID:
 568                 keystr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
 569                 break;
 570
 571         case ID_TYPE_GID:
 572                 keystr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
 573                 break;
 574
 575         default:
 576                 DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
 577                 return NT_STATUS_INVALID_PARAMETER;
 578         }
 579
 580         if (keystr == NULL) {
 581                 DEBUG(0, ("Out of memory!\n"));
 582                 ret = NT_STATUS_NO_MEMORY;
 583                 goto done;
 584         }
 585
 586         DEBUG(10,("Fetching record %s\n", keystr));
 587
 588         /* Check if the mapping exists */
 589         status = dbwrap_fetch_bystring(ctx->db, keystr, keystr, &data);
 590
 591         if (!NT_STATUS_IS_OK(status)) {
 592                 char *sidstr;
 593                 struct idmap_tdb2_set_mapping_context store_state;
 594
 595                 DEBUG(10,("Record %s not found\n", keystr));
 596                 if (ctx->script == NULL) {
 597                         ret = NT_STATUS_NONE_MAPPED;
 598                         goto done;
 599                 }
 600
 601                 ret = idmap_tdb2_script(ctx, map, "IDTOSID %s", keystr);
 602                 if (!NT_STATUS_IS_OK(ret)) {
 603                         goto done;
 604                 }
 605
 606                 sidstr = sid_string_talloc(keystr, map->sid);
 607                 if (!sidstr) {
 608                         ret = NT_STATUS_NO_MEMORY;
 609                         goto done;
 610                 }
 611
 612                 store_state.ksidstr = sidstr;
 613                 store_state.kidstr = keystr;
 614
 615                 ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 616                                       &store_state);
 617                 goto done;
 618         }
 619
 620         if (!string_to_sid(map->sid, (const char *)data.dptr)) {
 621                 DEBUG(10,("INVALID SID (%s) in record %s\n",
 622                         (const char *)data.dptr, keystr));
 623                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 624                 goto done;
 625         }
 626
 627         DEBUG(10,("Found record %s -> %s\n", keystr, (const char *)data.dptr));
 628         ret = NT_STATUS_OK;
 629
 630 done:
 631         talloc_free(keystr);
 632         return ret;
 633 }
 634
 635
 636 /*
 637  Single sid to id lookup function.
 638 */
 639 static NTSTATUS idmap_tdb2_sid_to_id(struct idmap_domain *dom, struct id_map *map)
 640 {
 641         NTSTATUS ret;
 642         TDB_DATA data;
 643         char *keystr;
 644         unsigned long rec_id = 0;
 645         struct idmap_tdb2_context *ctx;
 646         TALLOC_CTX *tmp_ctx = talloc_stackframe();
 647
 648         ret = idmap_tdb2_open_db(dom);
 649         NT_STATUS_NOT_OK_RETURN(ret);
 650
 651         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 652
 653         keystr = sid_string_talloc(tmp_ctx, map->sid);
 654         if (keystr == NULL) {
 655                 DEBUG(0, ("Out of memory!\n"));
 656                 ret = NT_STATUS_NO_MEMORY;
 657                 goto done;
 658         }
 659
 660         DEBUG(10,("Fetching record %s\n", keystr));
 661
 662         /* Check if sid is present in database */
 663         ret = dbwrap_fetch_bystring(ctx->db, tmp_ctx, keystr, &data);
 664         if (!NT_STATUS_IS_OK(ret)) {
 665                 char *idstr;
 666                 struct idmap_tdb2_set_mapping_context store_state;
 667
 668                 DEBUG(10,(__location__ " Record %s not found\n", keystr));
 669
 670                 if (ctx->script == NULL) {
 671                         ret = NT_STATUS_NONE_MAPPED;
 672                         goto done;
 673                 }
 674
 675                 ret = idmap_tdb2_script(ctx, map, "SIDTOID %s", keystr);
 676                 if (!NT_STATUS_IS_OK(ret)) {
 677                         goto done;
 678                 }
 679
 680                 /* apply filters before returning result */
 681                 if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 682                         DEBUG(5, ("Script returned id (%u) out of range "
 683                                   "(%u - %u). Filtered!\n",
 684                                   map->xid.id, dom->low_id, dom->high_id));
 685                         ret = NT_STATUS_NONE_MAPPED;
 686                         goto done;
 687                 }
 688
 689                 idstr = talloc_asprintf(tmp_ctx, "%cID %lu",
 690                                         map->xid.type == ID_TYPE_UID?'U':'G',
 691                                         (unsigned long)map->xid.id);
 692                 if (idstr == NULL) {
 693                         ret = NT_STATUS_NO_MEMORY;
 694                         goto done;
 695                 }
 696
 697                 store_state.ksidstr = keystr;
 698                 store_state.kidstr = idstr;
 699
 700                 ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 701                                       &store_state);
 702                 goto done;
 703         }
 704
 705         /* What type of record is this ? */
 706         if (sscanf((const char *)data.dptr, "UID %lu", &rec_id) == 1) { /* Try a UID record. */
 707                 map->xid.id = rec_id;
 708                 map->xid.type = ID_TYPE_UID;
 709                 DEBUG(10,("Found uid record %s -> %s \n", keystr, (const char *)data.dptr ));
 710                 ret = NT_STATUS_OK;
 711
 712         } else if (sscanf((const char *)data.dptr, "GID %lu", &rec_id) == 1) { /* Try a GID record. */
 713                 map->xid.id = rec_id;
 714                 map->xid.type = ID_TYPE_GID;
 715                 DEBUG(10,("Found gid record %s -> %s \n", keystr, (const char *)data.dptr ));
 716                 ret = NT_STATUS_OK;
 717
 718         } else { /* Unknown record type ! */
 719                 DEBUG(2, ("Found INVALID record %s -> %s\n", keystr, (const char *)data.dptr));
 720                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 721                 goto done;
 722         }
 723
 724         /* apply filters before returning result */
 725         if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 726                 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 727                                 map->xid.id, dom->low_id, dom->high_id));
 728                 ret = NT_STATUS_NONE_MAPPED;
 729         }
 730
 731 done:
 732         talloc_free(tmp_ctx);
 733         return ret;
 734 }
 735
 736 /*
 737   lookup a set of unix ids.
 738 */
 739 static NTSTATUS idmap_tdb2_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
 740 {
 741         NTSTATUS ret;
 742         int i;
 743
 744         /* initialize the status to avoid suprise */
 745         for (i = 0; ids[i]; i++) {
 746                 ids[i]->status = ID_UNKNOWN;
 747         }
 748
 749         for (i = 0; ids[i]; i++) {
 750                 ret = idmap_tdb2_id_to_sid(dom, ids[i]);
 751                 if ( ! NT_STATUS_IS_OK(ret)) {
 752
 753                         /* if it is just a failed mapping continue */
 754                         if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
 755
 756                                 /* make sure it is marked as unmapped */
 757                                 ids[i]->status = ID_UNMAPPED;
 758                                 continue;
 759                         }
 760
 761                         /* some fatal error occurred, return immediately */
 762                         goto done;
 763                 }
 764
 765                 /* all ok, id is mapped */
 766                 ids[i]->status = ID_MAPPED;
 767         }
 768
 769         ret = NT_STATUS_OK;
 770
 771 done:
 772         return ret;
 773 }
 774
 775 /*
 776   lookup a set of sids.
 777 */
 778
 779 struct idmap_tdb2_sids_to_unixids_context {
 780         struct idmap_domain *dom;
 781         struct id_map **ids;
 782         bool allocate_unmapped;
 783 };
 784
 785 static NTSTATUS idmap_tdb2_sids_to_unixids_action(struct db_context *db,
 786                                                   void *private_data)
 787 {
 788         struct idmap_tdb2_sids_to_unixids_context *state;
 789         int i;
 790         NTSTATUS ret = NT_STATUS_OK;
 791
 792         state = (struct idmap_tdb2_sids_to_unixids_context *)private_data;
 793
 794         DEBUG(10, ("idmap_tdb2_sids_to_unixids_action: "
 795                    " domain: [%s], allocate: %s\n",
 796                    state->dom->name,
 797                    state->allocate_unmapped ? "yes" : "no"));
 798
 799         for (i = 0; state->ids[i]; i++) {
 800                 if ((state->ids[i]->status == ID_UNKNOWN) ||
 801                     /* retry if we could not map in previous run: */
 802                     (state->ids[i]->status == ID_UNMAPPED))
 803                 {
 804                         NTSTATUS ret2;
 805
 806                         ret2 = idmap_tdb2_sid_to_id(state->dom, state->ids[i]);
 807                         if (!NT_STATUS_IS_OK(ret2)) {
 808
 809                                 /* if it is just a failed mapping, continue */
 810                                 if (NT_STATUS_EQUAL(ret2, NT_STATUS_NONE_MAPPED)) {
 811
 812                                         /* make sure it is marked as unmapped */
 813                                         state->ids[i]->status = ID_UNMAPPED;
 814                                         ret = STATUS_SOME_UNMAPPED;
 815                                 } else {
 816                                         /* some fatal error occurred, return immediately */
 817                                         ret = ret2;
 818                                         goto done;
 819                                 }
 820                         } else {
 821                                 /* all ok, id is mapped */
 822                                 state->ids[i]->status = ID_MAPPED;
 823                         }
 824                 }
 825
 826                 if ((state->ids[i]->status == ID_UNMAPPED) &&
 827                     state->allocate_unmapped)
 828                 {
 829                         ret = idmap_tdb2_new_mapping(state->dom, state->ids[i]);
 830                         if (!NT_STATUS_IS_OK(ret)) {
 831                                 goto done;
 832                         }
 833                 }
 834         }
 835
 836 done:
 837         return ret;
 838 }
 839
 840 static NTSTATUS idmap_tdb2_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
 841 {
 842         NTSTATUS ret;
 843         int i;
 844         struct idmap_tdb2_sids_to_unixids_context state;
 845         struct idmap_tdb2_context *ctx;
 846
 847         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 848
 849         /* initialize the status to avoid suprise */
 850         for (i = 0; ids[i]; i++) {
 851                 ids[i]->status = ID_UNKNOWN;
 852         }
 853
 854         state.dom = dom;
 855         state.ids = ids;
 856         state.allocate_unmapped = false;
 857
 858         ret = idmap_tdb2_sids_to_unixids_action(ctx->db, &state);
 859
 860         if (NT_STATUS_EQUAL(ret, STATUS_SOME_UNMAPPED) && !dom->read_only) {
 861                 state.allocate_unmapped = true;
 862                 ret = dbwrap_trans_do(ctx->db,
 863                                       idmap_tdb2_sids_to_unixids_action,
 864                                       &state);
 865         }
 866
 867         return ret;
 868 }
 869
 870
 871 static struct idmap_methods db_methods = {
 872         .init            = idmap_tdb2_db_init,
 873         .unixids_to_sids = idmap_tdb2_unixids_to_sids,
 874         .sids_to_unixids = idmap_tdb2_sids_to_unixids,
 875         .allocate_id     = idmap_tdb2_get_new_id
 876 };
 877
 878 NTSTATUS samba_init_module(void)
 879 {
 880         return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb2", &db_methods);
 881 }