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.h"
  40 #include "../libcli/security/dom_sid.h"
  41 #include "util_tdb.h"
  42
  43 #undef DBGC_CLASS
  44 #define DBGC_CLASS DBGC_IDMAP
  45
  46 struct idmap_tdb2_context {
  47         struct db_context *db;
  48         const char *script; /* script to provide idmaps */
  49         struct idmap_rw_ops *rw_ops;
  50 };
  51
  52 /* High water mark keys */
  53 #define HWM_GROUP  "GROUP HWM"
  54 #define HWM_USER   "USER HWM"
  55
  56
  57 /*
  58  * check and initialize high/low water marks in the db
  59  */
  60 static NTSTATUS idmap_tdb2_init_hwm(struct idmap_domain *dom)
  61 {
  62         NTSTATUS status;
  63         uint32 low_id;
  64         struct idmap_tdb2_context *ctx;
  65
  66         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
  67
  68         /* Create high water marks for group and user id */
  69
  70         low_id = dbwrap_fetch_int32(ctx->db, HWM_USER);
  71         if ((low_id == -1) || (low_id < dom->low_id)) {
  72                 status = dbwrap_trans_store_int32(ctx->db, HWM_USER,
  73                                                   dom->low_id);
  74                 if (!NT_STATUS_IS_OK(status)) {
  75                         DEBUG(0, ("Unable to initialise user hwm in idmap "
  76                                   "database: %s\n", nt_errstr(status)));
  77                         return NT_STATUS_INTERNAL_DB_ERROR;
  78                 }
  79         }
  80
  81         low_id = dbwrap_fetch_int32(ctx->db, HWM_GROUP);
  82         if ((low_id == -1) || (low_id < dom->low_id)) {
  83                 status = dbwrap_trans_store_int32(ctx->db, HWM_GROUP,
  84                                                   dom->low_id);
  85                 if (!NT_STATUS_IS_OK(status)) {
  86                         DEBUG(0, ("Unable to initialise group hwm in idmap "
  87                                   "database: %s\n", nt_errstr(status)));
  88                         return NT_STATUS_INTERNAL_DB_ERROR;
  89                 }
  90         }
  91
  92         return NT_STATUS_OK;
  93 }
  94
  95
  96 /*
  97   open the permanent tdb
  98  */
  99 static NTSTATUS idmap_tdb2_open_db(struct idmap_domain *dom)
 100 {
 101         char *db_path;
 102         struct idmap_tdb2_context *ctx;
 103
 104         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 105
 106         if (ctx->db) {
 107                 /* its already open */
 108                 return NT_STATUS_OK;
 109         }
 110
 111         db_path = talloc_asprintf(NULL, "%s/idmap2.tdb", lp_private_dir());
 112         NT_STATUS_HAVE_NO_MEMORY(db_path);
 113
 114         /* Open idmap repository */
 115         ctx->db = db_open(ctx, db_path, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644);
 116         TALLOC_FREE(db_path);
 117
 118         if (ctx->db == NULL) {
 119                 DEBUG(0, ("Unable to open idmap_tdb2 database '%s'\n",
 120                           db_path));
 121                 return NT_STATUS_UNSUCCESSFUL;
 122         }
 123
 124         return idmap_tdb2_init_hwm(dom);
 125 }
 126
 127
 128 /*
 129   Allocate a new id.
 130 */
 131
 132 struct idmap_tdb2_allocate_id_context {
 133         const char *hwmkey;
 134         const char *hwmtype;
 135         uint32_t high_hwm;
 136         uint32_t hwm;
 137 };
 138
 139 static NTSTATUS idmap_tdb2_allocate_id_action(struct db_context *db,
 140                                               void *private_data)
 141 {
 142         NTSTATUS ret;
 143         struct idmap_tdb2_allocate_id_context *state;
 144         uint32_t hwm;
 145
 146         state = (struct idmap_tdb2_allocate_id_context *)private_data;
 147
 148         hwm = dbwrap_fetch_int32(db, state->hwmkey);
 149         if (hwm == -1) {
 150                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 151                 goto done;
 152         }
 153
 154         /* check it is in the range */
 155         if (hwm > state->high_hwm) {
 156                 DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
 157                           state->hwmtype, (unsigned long)state->high_hwm));
 158                 ret = NT_STATUS_UNSUCCESSFUL;
 159                 goto done;
 160         }
 161
 162         /* fetch a new id and increment it */
 163         ret = dbwrap_trans_change_uint32_atomic(db, state->hwmkey, &hwm, 1);
 164         if (!NT_STATUS_IS_OK(ret)) {
 165                 DEBUG(1, ("Fatal error while fetching a new %s value\n!",
 166                           state->hwmtype));
 167                 goto done;
 168         }
 169
 170         /* recheck it is in the range */
 171         if (hwm > state->high_hwm) {
 172                 DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
 173                           state->hwmtype, (unsigned long)state->high_hwm));
 174                 ret = NT_STATUS_UNSUCCESSFUL;
 175                 goto done;
 176         }
 177
 178         ret = NT_STATUS_OK;
 179         state->hwm = hwm;
 180
 181 done:
 182         return ret;
 183 }
 184
 185 static NTSTATUS idmap_tdb2_allocate_id(struct idmap_domain *dom,
 186                                        struct unixid *xid)
 187 {
 188         const char *hwmkey;
 189         const char *hwmtype;
 190         uint32_t high_hwm;
 191         uint32_t hwm = 0;
 192         NTSTATUS status;
 193         struct idmap_tdb2_allocate_id_context state;
 194         struct idmap_tdb2_context *ctx;
 195
 196         status = idmap_tdb2_open_db(dom);
 197         NT_STATUS_NOT_OK_RETURN(status);
 198
 199         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 200
 201         /* Get current high water mark */
 202         switch (xid->type) {
 203
 204         case ID_TYPE_UID:
 205                 hwmkey = HWM_USER;
 206                 hwmtype = "UID";
 207                 break;
 208
 209         case ID_TYPE_GID:
 210                 hwmkey = HWM_GROUP;
 211                 hwmtype = "GID";
 212                 break;
 213
 214         default:
 215                 DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
 216                 return NT_STATUS_INVALID_PARAMETER;
 217         }
 218
 219         high_hwm = dom->high_id;
 220
 221         state.hwm = hwm;
 222         state.high_hwm = high_hwm;
 223         state.hwmtype = hwmtype;
 224         state.hwmkey = hwmkey;
 225
 226         status = dbwrap_trans_do(ctx->db, idmap_tdb2_allocate_id_action,
 227                                  &state);
 228
 229         if (NT_STATUS_IS_OK(status)) {
 230                 xid->id = state.hwm;
 231                 DEBUG(10,("New %s = %d\n", hwmtype, state.hwm));
 232         } else {
 233                 DEBUG(1, ("Error allocating a new %s\n", hwmtype));
 234         }
 235
 236         return status;
 237 }
 238
 239 /**
 240  * Allocate a new unix-ID.
 241  * For now this is for the default idmap domain only.
 242  * Should be extended later on.
 243  */
 244 static NTSTATUS idmap_tdb2_get_new_id(struct idmap_domain *dom,
 245                                       struct unixid *id)
 246 {
 247         NTSTATUS ret;
 248
 249         if (!strequal(dom->name, "*")) {
 250                 DEBUG(3, ("idmap_tdb2_get_new_id: "
 251                           "Refusing creation of mapping for domain'%s'. "
 252                           "Currently only supported for the default "
 253                           "domain \"*\".\n",
 254                            dom->name));
 255                 return NT_STATUS_NOT_IMPLEMENTED;
 256         }
 257
 258         ret = idmap_tdb2_allocate_id(dom, id);
 259
 260         return ret;
 261 }
 262
 263 /*
 264   IDMAP MAPPING TDB BACKEND
 265 */
 266
 267 static NTSTATUS idmap_tdb2_set_mapping(struct idmap_domain *dom,
 268                                        const struct id_map *map);
 269
 270 /*
 271   Initialise idmap database.
 272 */
 273 static NTSTATUS idmap_tdb2_db_init(struct idmap_domain *dom)
 274 {
 275         NTSTATUS ret;
 276         struct idmap_tdb2_context *ctx;
 277         char *config_option = NULL;
 278         const char * idmap_script = NULL;
 279
 280         ctx = talloc_zero(dom, struct idmap_tdb2_context);
 281         if ( ! ctx) {
 282                 DEBUG(0, ("Out of memory!\n"));
 283                 return NT_STATUS_NO_MEMORY;
 284         }
 285
 286         config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
 287         if (config_option == NULL) {
 288                 DEBUG(0, ("Out of memory!\n"));
 289                 ret = NT_STATUS_NO_MEMORY;
 290                 goto failed;
 291         }
 292         ctx->script = lp_parm_const_string(-1, config_option, "script", NULL);
 293         talloc_free(config_option);
 294
 295         idmap_script = lp_parm_const_string(-1, "idmap", "script", NULL);
 296         if (idmap_script != NULL) {
 297                 DEBUG(0, ("Warning: 'idmap:script' is deprecated. "
 298                           " Please use 'idmap config * : script' instead!\n"));
 299         }
 300
 301         if (strequal(dom->name, "*") && ctx->script == NULL) {
 302                 /* fall back to idmap:script for backwards compatibility */
 303                 ctx->script = idmap_script;
 304         }
 305
 306         if (ctx->script) {
 307                 DEBUG(1, ("using idmap script '%s'\n", ctx->script));
 308         }
 309
 310         ctx->rw_ops = talloc_zero(ctx, struct idmap_rw_ops);
 311         if (ctx->rw_ops == NULL) {
 312                 DEBUG(0, ("Out of memory!\n"));
 313                 ret = NT_STATUS_NO_MEMORY;
 314                 goto failed;
 315         }
 316
 317         ctx->rw_ops->get_new_id = idmap_tdb2_get_new_id;
 318         ctx->rw_ops->set_mapping = idmap_tdb2_set_mapping;
 319
 320         dom->private_data = ctx;
 321
 322         ret = idmap_tdb2_open_db(dom);
 323         if (!NT_STATUS_IS_OK(ret)) {
 324                 goto failed;
 325         }
 326
 327         return NT_STATUS_OK;
 328
 329 failed:
 330         talloc_free(ctx);
 331         return ret;
 332 }
 333
 334
 335 /**
 336  * store a mapping in the database.
 337  */
 338
 339 struct idmap_tdb2_set_mapping_context {
 340         const char *ksidstr;
 341         const char *kidstr;
 342 };
 343
 344 static NTSTATUS idmap_tdb2_set_mapping_action(struct db_context *db,
 345                                               void *private_data)
 346 {
 347         TDB_DATA data;
 348         NTSTATUS ret;
 349         struct idmap_tdb2_set_mapping_context *state;
 350         TALLOC_CTX *tmp_ctx = talloc_stackframe();
 351
 352         state = (struct idmap_tdb2_set_mapping_context *)private_data;
 353
 354         DEBUG(10, ("Storing %s <-> %s map\n", state->ksidstr, state->kidstr));
 355
 356         /* check wheter sid mapping is already present in db */
 357         data = dbwrap_fetch_bystring(db, tmp_ctx, state->ksidstr);
 358         if (data.dptr) {
 359                 ret = NT_STATUS_OBJECT_NAME_COLLISION;
 360                 goto done;
 361         }
 362
 363         ret = dbwrap_store_bystring(db, state->ksidstr,
 364                                     string_term_tdb_data(state->kidstr),
 365                                     TDB_INSERT);
 366         if (!NT_STATUS_IS_OK(ret)) {
 367                 DEBUG(0, ("Error storing SID -> ID: %s\n", nt_errstr(ret)));
 368                 goto done;
 369         }
 370
 371         ret = dbwrap_store_bystring(db, state->kidstr,
 372                                     string_term_tdb_data(state->ksidstr),
 373                                     TDB_INSERT);
 374         if (!NT_STATUS_IS_OK(ret)) {
 375                 DEBUG(0, ("Error storing ID -> SID: %s\n", nt_errstr(ret)));
 376                 /* try to remove the previous stored SID -> ID map */
 377                 dbwrap_delete_bystring(db, state->ksidstr);
 378                 goto done;
 379         }
 380
 381         DEBUG(10,("Stored %s <-> %s\n", state->ksidstr, state->kidstr));
 382
 383 done:
 384         talloc_free(tmp_ctx);
 385         return ret;
 386 }
 387
 388 static NTSTATUS idmap_tdb2_set_mapping(struct idmap_domain *dom, const struct id_map *map)
 389 {
 390         struct idmap_tdb2_context *ctx;
 391         NTSTATUS ret;
 392         char *ksidstr, *kidstr;
 393         struct idmap_tdb2_set_mapping_context state;
 394
 395         if (!map || !map->sid) {
 396                 return NT_STATUS_INVALID_PARAMETER;
 397         }
 398
 399         ksidstr = kidstr = NULL;
 400
 401         /* TODO: should we filter a set_mapping using low/high filters ? */
 402
 403         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 404
 405         switch (map->xid.type) {
 406
 407         case ID_TYPE_UID:
 408                 kidstr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
 409                 break;
 410
 411         case ID_TYPE_GID:
 412                 kidstr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
 413                 break;
 414
 415         default:
 416                 DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
 417                 return NT_STATUS_INVALID_PARAMETER;
 418         }
 419
 420         if (kidstr == NULL) {
 421                 DEBUG(0, ("ERROR: Out of memory!\n"));
 422                 ret = NT_STATUS_NO_MEMORY;
 423                 goto done;
 424         }
 425
 426         ksidstr = sid_string_talloc(ctx, map->sid);
 427         if (ksidstr == NULL) {
 428                 DEBUG(0, ("Out of memory!\n"));
 429                 ret = NT_STATUS_NO_MEMORY;
 430                 goto done;
 431         }
 432
 433         state.ksidstr = ksidstr;
 434         state.kidstr = kidstr;
 435
 436         ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 437                               &state);
 438
 439 done:
 440         talloc_free(ksidstr);
 441         talloc_free(kidstr);
 442         return ret;
 443 }
 444
 445 /**
 446  * Create a new mapping for an unmapped SID, also allocating a new ID.
 447  * This should be run inside a transaction.
 448  *
 449  * TODO:
 450 *  Properly integrate this with multi domain idmap config:
 451  * Currently, the allocator is default-config only.
 452  */
 453 static NTSTATUS idmap_tdb2_new_mapping(struct idmap_domain *dom, struct id_map *map)
 454 {
 455         NTSTATUS ret;
 456         struct idmap_tdb2_context *ctx;
 457
 458         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 459
 460         ret = idmap_rw_new_mapping(dom, ctx->rw_ops, map);
 461
 462         return ret;
 463 }
 464
 465
 466 /*
 467   run a script to perform a mapping
 468
 469   The script should the following command lines:
 470
 471       SIDTOID S-1-xxxx
 472       IDTOSID UID xxxx
 473       IDTOSID GID xxxx
 474
 475   and should return one of the following as a single line of text
 476      UID:xxxx
 477      GID:xxxx
 478      SID:xxxx
 479      ERR:xxxx
 480  */
 481 static NTSTATUS idmap_tdb2_script(struct idmap_tdb2_context *ctx, struct id_map *map,
 482                                   const char *fmt, ...)
 483 {
 484         va_list ap;
 485         char *cmd;
 486         FILE *p;
 487         char line[64];
 488         unsigned long v;
 489
 490         cmd = talloc_asprintf(ctx, "%s ", ctx->script);
 491         NT_STATUS_HAVE_NO_MEMORY(cmd);
 492
 493         va_start(ap, fmt);
 494         cmd = talloc_vasprintf_append(cmd, fmt, ap);
 495         va_end(ap);
 496         NT_STATUS_HAVE_NO_MEMORY(cmd);
 497
 498         p = popen(cmd, "r");
 499         talloc_free(cmd);
 500         if (p == NULL) {
 501                 return NT_STATUS_NONE_MAPPED;
 502         }
 503
 504         if (fgets(line, sizeof(line)-1, p) == NULL) {
 505                 pclose(p);
 506                 return NT_STATUS_NONE_MAPPED;
 507         }
 508         pclose(p);
 509
 510         DEBUG(10,("idmap script gave: %s\n", line));
 511
 512         if (sscanf(line, "UID:%lu", &v) == 1) {
 513                 map->xid.id   = v;
 514                 map->xid.type = ID_TYPE_UID;
 515         } else if (sscanf(line, "GID:%lu", &v) == 1) {
 516                 map->xid.id   = v;
 517                 map->xid.type = ID_TYPE_GID;
 518         } else if (strncmp(line, "SID:S-", 6) == 0) {
 519                 if (!string_to_sid(map->sid, &line[4])) {
 520                         DEBUG(0,("Bad SID in '%s' from idmap script %s\n",
 521                                  line, ctx->script));
 522                         return NT_STATUS_NONE_MAPPED;
 523                 }
 524         } else {
 525                 DEBUG(0,("Bad reply '%s' from idmap script %s\n",
 526                          line, ctx->script));
 527                 return NT_STATUS_NONE_MAPPED;
 528         }
 529
 530         return NT_STATUS_OK;
 531 }
 532
 533
 534
 535 /*
 536   Single id to sid lookup function.
 537 */
 538 static NTSTATUS idmap_tdb2_id_to_sid(struct idmap_domain *dom, struct id_map *map)
 539 {
 540         NTSTATUS ret;
 541         TDB_DATA data;
 542         char *keystr;
 543         NTSTATUS status;
 544         struct idmap_tdb2_context *ctx;
 545
 546
 547         if (!dom || !map) {
 548                 return NT_STATUS_INVALID_PARAMETER;
 549         }
 550
 551         status = idmap_tdb2_open_db(dom);
 552         NT_STATUS_NOT_OK_RETURN(status);
 553
 554         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 555
 556         /* apply filters before checking */
 557         if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 558                 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 559                                 map->xid.id, dom->low_id, dom->high_id));
 560                 return NT_STATUS_NONE_MAPPED;
 561         }
 562
 563         switch (map->xid.type) {
 564
 565         case ID_TYPE_UID:
 566                 keystr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
 567                 break;
 568
 569         case ID_TYPE_GID:
 570                 keystr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
 571                 break;
 572
 573         default:
 574                 DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
 575                 return NT_STATUS_INVALID_PARAMETER;
 576         }
 577
 578         if (keystr == NULL) {
 579                 DEBUG(0, ("Out of memory!\n"));
 580                 ret = NT_STATUS_NO_MEMORY;
 581                 goto done;
 582         }
 583
 584         DEBUG(10,("Fetching record %s\n", keystr));
 585
 586         /* Check if the mapping exists */
 587         data = dbwrap_fetch_bystring(ctx->db, keystr, keystr);
 588
 589         if (!data.dptr) {
 590                 char *sidstr;
 591                 struct idmap_tdb2_set_mapping_context store_state;
 592
 593                 DEBUG(10,("Record %s not found\n", keystr));
 594                 if (ctx->script == NULL) {
 595                         ret = NT_STATUS_NONE_MAPPED;
 596                         goto done;
 597                 }
 598
 599                 ret = idmap_tdb2_script(ctx, map, "IDTOSID %s", keystr);
 600                 if (!NT_STATUS_IS_OK(ret)) {
 601                         goto done;
 602                 }
 603
 604                 sidstr = sid_string_talloc(keystr, map->sid);
 605                 if (!sidstr) {
 606                         ret = NT_STATUS_NO_MEMORY;
 607                         goto done;
 608                 }
 609
 610                 store_state.ksidstr = sidstr;
 611                 store_state.kidstr = keystr;
 612
 613                 ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 614                                       &store_state);
 615                 goto done;
 616         }
 617
 618         if (!string_to_sid(map->sid, (const char *)data.dptr)) {
 619                 DEBUG(10,("INVALID SID (%s) in record %s\n",
 620                         (const char *)data.dptr, keystr));
 621                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 622                 goto done;
 623         }
 624
 625         DEBUG(10,("Found record %s -> %s\n", keystr, (const char *)data.dptr));
 626         ret = NT_STATUS_OK;
 627
 628 done:
 629         talloc_free(keystr);
 630         return ret;
 631 }
 632
 633
 634 /*
 635  Single sid to id lookup function.
 636 */
 637 static NTSTATUS idmap_tdb2_sid_to_id(struct idmap_domain *dom, struct id_map *map)
 638 {
 639         NTSTATUS ret;
 640         TDB_DATA data;
 641         char *keystr;
 642         unsigned long rec_id = 0;
 643         struct idmap_tdb2_context *ctx;
 644         TALLOC_CTX *tmp_ctx = talloc_stackframe();
 645
 646         ret = idmap_tdb2_open_db(dom);
 647         NT_STATUS_NOT_OK_RETURN(ret);
 648
 649         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 650
 651         keystr = sid_string_talloc(tmp_ctx, map->sid);
 652         if (keystr == NULL) {
 653                 DEBUG(0, ("Out of memory!\n"));
 654                 ret = NT_STATUS_NO_MEMORY;
 655                 goto done;
 656         }
 657
 658         DEBUG(10,("Fetching record %s\n", keystr));
 659
 660         /* Check if sid is present in database */
 661         data = dbwrap_fetch_bystring(ctx->db, tmp_ctx, keystr);
 662         if (!data.dptr) {
 663                 char *idstr;
 664                 struct idmap_tdb2_set_mapping_context store_state;
 665
 666                 DEBUG(10,(__location__ " Record %s not found\n", keystr));
 667
 668                 if (ctx->script == NULL) {
 669                         ret = NT_STATUS_NONE_MAPPED;
 670                         goto done;
 671                 }
 672
 673                 ret = idmap_tdb2_script(ctx, map, "SIDTOID %s", keystr);
 674                 if (!NT_STATUS_IS_OK(ret)) {
 675                         goto done;
 676                 }
 677
 678                 /* apply filters before returning result */
 679                 if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 680                         DEBUG(5, ("Script returned id (%u) out of range "
 681                                   "(%u - %u). Filtered!\n",
 682                                   map->xid.id, dom->low_id, dom->high_id));
 683                         ret = NT_STATUS_NONE_MAPPED;
 684                         goto done;
 685                 }
 686
 687                 idstr = talloc_asprintf(tmp_ctx, "%cID %lu",
 688                                         map->xid.type == ID_TYPE_UID?'U':'G',
 689                                         (unsigned long)map->xid.id);
 690                 if (idstr == NULL) {
 691                         ret = NT_STATUS_NO_MEMORY;
 692                         goto done;
 693                 }
 694
 695                 store_state.ksidstr = keystr;
 696                 store_state.kidstr = idstr;
 697
 698                 ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 699                                       &store_state);
 700                 goto done;
 701         }
 702
 703         /* What type of record is this ? */
 704         if (sscanf((const char *)data.dptr, "UID %lu", &rec_id) == 1) { /* Try a UID record. */
 705                 map->xid.id = rec_id;
 706                 map->xid.type = ID_TYPE_UID;
 707                 DEBUG(10,("Found uid record %s -> %s \n", keystr, (const char *)data.dptr ));
 708                 ret = NT_STATUS_OK;
 709
 710         } else if (sscanf((const char *)data.dptr, "GID %lu", &rec_id) == 1) { /* Try a GID record. */
 711                 map->xid.id = rec_id;
 712                 map->xid.type = ID_TYPE_GID;
 713                 DEBUG(10,("Found gid record %s -> %s \n", keystr, (const char *)data.dptr ));
 714                 ret = NT_STATUS_OK;
 715
 716         } else { /* Unknown record type ! */
 717                 DEBUG(2, ("Found INVALID record %s -> %s\n", keystr, (const char *)data.dptr));
 718                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 719                 goto done;
 720         }
 721
 722         /* apply filters before returning result */
 723         if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 724                 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 725                                 map->xid.id, dom->low_id, dom->high_id));
 726                 ret = NT_STATUS_NONE_MAPPED;
 727         }
 728
 729 done:
 730         talloc_free(tmp_ctx);
 731         return ret;
 732 }
 733
 734 /*
 735   lookup a set of unix ids.
 736 */
 737 static NTSTATUS idmap_tdb2_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
 738 {
 739         NTSTATUS ret;
 740         int i;
 741
 742         /* initialize the status to avoid suprise */
 743         for (i = 0; ids[i]; i++) {
 744                 ids[i]->status = ID_UNKNOWN;
 745         }
 746
 747         for (i = 0; ids[i]; i++) {
 748                 ret = idmap_tdb2_id_to_sid(dom, ids[i]);
 749                 if ( ! NT_STATUS_IS_OK(ret)) {
 750
 751                         /* if it is just a failed mapping continue */
 752                         if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
 753
 754                                 /* make sure it is marked as unmapped */
 755                                 ids[i]->status = ID_UNMAPPED;
 756                                 continue;
 757                         }
 758
 759                         /* some fatal error occurred, return immediately */
 760                         goto done;
 761                 }
 762
 763                 /* all ok, id is mapped */
 764                 ids[i]->status = ID_MAPPED;
 765         }
 766
 767         ret = NT_STATUS_OK;
 768
 769 done:
 770         return ret;
 771 }
 772
 773 /*
 774   lookup a set of sids.
 775 */
 776
 777 struct idmap_tdb2_sids_to_unixids_context {
 778         struct idmap_domain *dom;
 779         struct id_map **ids;
 780         bool allocate_unmapped;
 781 };
 782
 783 static NTSTATUS idmap_tdb2_sids_to_unixids_action(struct db_context *db,
 784                                                   void *private_data)
 785 {
 786         struct idmap_tdb2_sids_to_unixids_context *state;
 787         int i;
 788         NTSTATUS ret = NT_STATUS_OK;
 789
 790         state = (struct idmap_tdb2_sids_to_unixids_context *)private_data;
 791
 792         DEBUG(10, ("idmap_tdb2_sids_to_unixids_action: "
 793                    " domain: [%s], allocate: %s\n",
 794                    state->dom->name,
 795                    state->allocate_unmapped ? "yes" : "no"));
 796
 797         for (i = 0; state->ids[i]; i++) {
 798                 if ((state->ids[i]->status == ID_UNKNOWN) ||
 799                     /* retry if we could not map in previous run: */
 800                     (state->ids[i]->status == ID_UNMAPPED))
 801                 {
 802                         NTSTATUS ret2;
 803
 804                         ret2 = idmap_tdb2_sid_to_id(state->dom, state->ids[i]);
 805                         if (!NT_STATUS_IS_OK(ret2)) {
 806
 807                                 /* if it is just a failed mapping, continue */
 808                                 if (NT_STATUS_EQUAL(ret2, NT_STATUS_NONE_MAPPED)) {
 809
 810                                         /* make sure it is marked as unmapped */
 811                                         state->ids[i]->status = ID_UNMAPPED;
 812                                         ret = STATUS_SOME_UNMAPPED;
 813                                 } else {
 814                                         /* some fatal error occurred, return immediately */
 815                                         ret = ret2;
 816                                         goto done;
 817                                 }
 818                         } else {
 819                                 /* all ok, id is mapped */
 820                                 state->ids[i]->status = ID_MAPPED;
 821                         }
 822                 }
 823
 824                 if ((state->ids[i]->status == ID_UNMAPPED) &&
 825                     state->allocate_unmapped)
 826                 {
 827                         ret = idmap_tdb2_new_mapping(state->dom, state->ids[i]);
 828                         if (!NT_STATUS_IS_OK(ret)) {
 829                                 goto done;
 830                         }
 831                 }
 832         }
 833
 834 done:
 835         return ret;
 836 }
 837
 838 static NTSTATUS idmap_tdb2_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
 839 {
 840         NTSTATUS ret;
 841         int i;
 842         struct idmap_tdb2_sids_to_unixids_context state;
 843         struct idmap_tdb2_context *ctx;
 844
 845         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 846
 847         /* initialize the status to avoid suprise */
 848         for (i = 0; ids[i]; i++) {
 849                 ids[i]->status = ID_UNKNOWN;
 850         }
 851
 852         state.dom = dom;
 853         state.ids = ids;
 854         state.allocate_unmapped = false;
 855
 856         ret = idmap_tdb2_sids_to_unixids_action(ctx->db, &state);
 857
 858         if (NT_STATUS_EQUAL(ret, STATUS_SOME_UNMAPPED) && !dom->read_only) {
 859                 state.allocate_unmapped = true;
 860                 ret = dbwrap_trans_do(ctx->db,
 861                                       idmap_tdb2_sids_to_unixids_action,
 862                                       &state);
 863         }
 864
 865         return ret;
 866 }
 867
 868
 869 static struct idmap_methods db_methods = {
 870         .init            = idmap_tdb2_db_init,
 871         .unixids_to_sids = idmap_tdb2_unixids_to_sids,
 872         .sids_to_unixids = idmap_tdb2_sids_to_unixids,
 873         .allocate_id     = idmap_tdb2_get_new_id
 874 };
 875
 876 NTSTATUS idmap_tdb2_init(void)
 877 {
 878         return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb2", &db_methods);
 879 }