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
  42 #undef DBGC_CLASS
  43 #define DBGC_CLASS DBGC_IDMAP
  44
  45 struct idmap_tdb2_context {
  46         struct db_context *db;
  47         const char *script; /* script to provide idmaps */
  48         struct idmap_rw_ops *rw_ops;
  49 };
  50
  51 /* High water mark keys */
  52 #define HWM_GROUP  "GROUP HWM"
  53 #define HWM_USER   "USER HWM"
  54
  55
  56 /*
  57  * check and initialize high/low water marks in the db
  58  */
  59 static NTSTATUS idmap_tdb2_init_hwm(struct idmap_domain *dom)
  60 {
  61         NTSTATUS status;
  62         uint32 low_id;
  63         struct idmap_tdb2_context *ctx;
  64
  65         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
  66
  67         /* Create high water marks for group and user id */
  68
  69         low_id = dbwrap_fetch_int32(ctx->db, HWM_USER);
  70         if ((low_id == -1) || (low_id < dom->low_id)) {
  71                 status = dbwrap_trans_store_int32(ctx->db, HWM_USER,
  72                                                   dom->low_id);
  73                 if (!NT_STATUS_IS_OK(status)) {
  74                         DEBUG(0, ("Unable to initialise user hwm in idmap "
  75                                   "database: %s\n", nt_errstr(status)));
  76                         return NT_STATUS_INTERNAL_DB_ERROR;
  77                 }
  78         }
  79
  80         low_id = dbwrap_fetch_int32(ctx->db, HWM_GROUP);
  81         if ((low_id == -1) || (low_id < dom->low_id)) {
  82                 status = dbwrap_trans_store_int32(ctx->db, HWM_GROUP,
  83                                                   dom->low_id);
  84                 if (!NT_STATUS_IS_OK(status)) {
  85                         DEBUG(0, ("Unable to initialise group hwm in idmap "
  86                                   "database: %s\n", nt_errstr(status)));
  87                         return NT_STATUS_INTERNAL_DB_ERROR;
  88                 }
  89         }
  90
  91         return NT_STATUS_OK;
  92 }
  93
  94
  95 /*
  96   open the permanent tdb
  97  */
  98 static NTSTATUS idmap_tdb2_open_db(struct idmap_domain *dom)
  99 {
 100         char *db_path;
 101         struct idmap_tdb2_context *ctx;
 102
 103         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 104
 105         if (ctx->db) {
 106                 /* its already open */
 107                 return NT_STATUS_OK;
 108         }
 109
 110         db_path = lp_parm_talloc_string(-1, "tdb", "idmap2.tdb", NULL);
 111         if (db_path == NULL) {
 112                 /* fall back to the private directory, which, despite
 113                    its name, is usually on shared storage */
 114                 db_path = talloc_asprintf(NULL, "%s/idmap2.tdb", lp_private_dir());
 115         }
 116         NT_STATUS_HAVE_NO_MEMORY(db_path);
 117
 118         /* Open idmap repository */
 119         ctx->db = db_open(ctx, db_path, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644);
 120         TALLOC_FREE(db_path);
 121
 122         if (ctx->db == NULL) {
 123                 DEBUG(0, ("Unable to open idmap_tdb2 database '%s'\n",
 124                           db_path));
 125                 return NT_STATUS_UNSUCCESSFUL;
 126         }
 127
 128         return idmap_tdb2_init_hwm(dom);
 129 }
 130
 131
 132 /*
 133   Allocate a new id.
 134 */
 135
 136 struct idmap_tdb2_allocate_id_context {
 137         const char *hwmkey;
 138         const char *hwmtype;
 139         uint32_t high_hwm;
 140         uint32_t hwm;
 141 };
 142
 143 static NTSTATUS idmap_tdb2_allocate_id_action(struct db_context *db,
 144                                               void *private_data)
 145 {
 146         NTSTATUS ret;
 147         struct idmap_tdb2_allocate_id_context *state;
 148         uint32_t hwm;
 149
 150         state = (struct idmap_tdb2_allocate_id_context *)private_data;
 151
 152         hwm = dbwrap_fetch_int32(db, state->hwmkey);
 153         if (hwm == -1) {
 154                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 155                 goto done;
 156         }
 157
 158         /* check it is in the range */
 159         if (hwm > state->high_hwm) {
 160                 DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
 161                           state->hwmtype, (unsigned long)state->high_hwm));
 162                 ret = NT_STATUS_UNSUCCESSFUL;
 163                 goto done;
 164         }
 165
 166         /* fetch a new id and increment it */
 167         ret = dbwrap_trans_change_uint32_atomic(db, state->hwmkey, &hwm, 1);
 168         if (!NT_STATUS_IS_OK(ret)) {
 169                 DEBUG(1, ("Fatal error while fetching a new %s value\n!",
 170                           state->hwmtype));
 171                 goto done;
 172         }
 173
 174         /* recheck it is in the range */
 175         if (hwm > state->high_hwm) {
 176                 DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
 177                           state->hwmtype, (unsigned long)state->high_hwm));
 178                 ret = NT_STATUS_UNSUCCESSFUL;
 179                 goto done;
 180         }
 181
 182         ret = NT_STATUS_OK;
 183         state->hwm = hwm;
 184
 185 done:
 186         return ret;
 187 }
 188
 189 static NTSTATUS idmap_tdb2_allocate_id(struct idmap_domain *dom,
 190                                        struct unixid *xid)
 191 {
 192         const char *hwmkey;
 193         const char *hwmtype;
 194         uint32_t high_hwm;
 195         uint32_t hwm = 0;
 196         NTSTATUS status;
 197         struct idmap_tdb2_allocate_id_context state;
 198         struct idmap_tdb2_context *ctx;
 199
 200         status = idmap_tdb2_open_db(dom);
 201         NT_STATUS_NOT_OK_RETURN(status);
 202
 203         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 204
 205         /* Get current high water mark */
 206         switch (xid->type) {
 207
 208         case ID_TYPE_UID:
 209                 hwmkey = HWM_USER;
 210                 hwmtype = "UID";
 211                 break;
 212
 213         case ID_TYPE_GID:
 214                 hwmkey = HWM_GROUP;
 215                 hwmtype = "GID";
 216                 break;
 217
 218         default:
 219                 DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
 220                 return NT_STATUS_INVALID_PARAMETER;
 221         }
 222
 223         high_hwm = dom->high_id;
 224
 225         state.hwm = hwm;
 226         state.high_hwm = high_hwm;
 227         state.hwmtype = hwmtype;
 228         state.hwmkey = hwmkey;
 229
 230         status = dbwrap_trans_do(ctx->db, idmap_tdb2_allocate_id_action,
 231                                  &state);
 232
 233         if (NT_STATUS_IS_OK(status)) {
 234                 xid->id = state.hwm;
 235                 DEBUG(10,("New %s = %d\n", hwmtype, state.hwm));
 236         } else {
 237                 DEBUG(1, ("Error allocating a new %s\n", hwmtype));
 238         }
 239
 240         return status;
 241 }
 242
 243 /**
 244  * Allocate a new unix-ID.
 245  * For now this is for the default idmap domain only.
 246  * Should be extended later on.
 247  */
 248 static NTSTATUS idmap_tdb2_get_new_id(struct idmap_domain *dom,
 249                                       struct unixid *id)
 250 {
 251         NTSTATUS ret;
 252
 253         if (!strequal(dom->name, "*")) {
 254                 DEBUG(3, ("idmap_tdb2_get_new_id: "
 255                           "Refusing creation of mapping for domain'%s'. "
 256                           "Currently only supported for the default "
 257                           "domain \"*\".\n",
 258                            dom->name));
 259                 return NT_STATUS_NOT_IMPLEMENTED;
 260         }
 261
 262         ret = idmap_tdb2_allocate_id(dom, id);
 263
 264         return ret;
 265 }
 266
 267 /*
 268   IDMAP MAPPING TDB BACKEND
 269 */
 270
 271 static NTSTATUS idmap_tdb2_set_mapping(struct idmap_domain *dom,
 272                                        const struct id_map *map);
 273
 274 /*
 275   Initialise idmap database.
 276 */
 277 static NTSTATUS idmap_tdb2_db_init(struct idmap_domain *dom)
 278 {
 279         NTSTATUS ret;
 280         struct idmap_tdb2_context *ctx;
 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         if (strequal(dom->name, "*")) {
 289                 ctx->script = lp_parm_const_string(-1, "idmap", "script", NULL);
 290                 if (ctx->script) {
 291                         DEBUG(1, ("using idmap script '%s'\n", ctx->script));
 292                 }
 293         } else {
 294                 char *config_option = NULL;
 295
 296                 config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
 297                 if ( ! config_option) {
 298                         DEBUG(0, ("Out of memory!\n"));
 299                         ret = NT_STATUS_NO_MEMORY;
 300                         goto failed;
 301                 }
 302
 303                 ctx->script = lp_parm_const_string(-1, config_option, "script", NULL);
 304                 if (ctx->script) {
 305                         DEBUG(1, ("using idmap script '%s'\n", ctx->script));
 306                 }
 307
 308                 talloc_free(config_option);
 309         }
 310
 311         ctx->rw_ops = talloc_zero(ctx, struct idmap_rw_ops);
 312         if (ctx->rw_ops == NULL) {
 313                 DEBUG(0, ("Out of memory!\n"));
 314                 ret = NT_STATUS_NO_MEMORY;
 315                 goto failed;
 316         }
 317
 318         ctx->rw_ops->get_new_id = idmap_tdb2_get_new_id;
 319         ctx->rw_ops->set_mapping = idmap_tdb2_set_mapping;
 320
 321         dom->private_data = ctx;
 322
 323         ret = idmap_tdb2_open_db(dom);
 324         if (!NT_STATUS_IS_OK(ret)) {
 325                 goto failed;
 326         }
 327
 328         return NT_STATUS_OK;
 329
 330 failed:
 331         talloc_free(ctx);
 332         return ret;
 333 }
 334
 335
 336 /**
 337  * store a mapping in the database.
 338  */
 339
 340 struct idmap_tdb2_set_mapping_context {
 341         const char *ksidstr;
 342         const char *kidstr;
 343 };
 344
 345 static NTSTATUS idmap_tdb2_set_mapping_action(struct db_context *db,
 346                                               void *private_data)
 347 {
 348         TDB_DATA data;
 349         NTSTATUS ret;
 350         struct idmap_tdb2_set_mapping_context *state;
 351         TALLOC_CTX *tmp_ctx = talloc_stackframe();
 352
 353         state = (struct idmap_tdb2_set_mapping_context *)private_data;
 354
 355         DEBUG(10, ("Storing %s <-> %s map\n", state->ksidstr, state->kidstr));
 356
 357         /* check wheter sid mapping is already present in db */
 358         data = dbwrap_fetch_bystring(db, tmp_ctx, state->ksidstr);
 359         if (data.dptr) {
 360                 ret = NT_STATUS_OBJECT_NAME_COLLISION;
 361                 goto done;
 362         }
 363
 364         ret = dbwrap_store_bystring(db, state->ksidstr,
 365                                     string_term_tdb_data(state->kidstr),
 366                                     TDB_INSERT);
 367         if (!NT_STATUS_IS_OK(ret)) {
 368                 DEBUG(0, ("Error storing SID -> ID: %s\n", nt_errstr(ret)));
 369                 goto done;
 370         }
 371
 372         ret = dbwrap_store_bystring(db, state->kidstr,
 373                                     string_term_tdb_data(state->ksidstr),
 374                                     TDB_INSERT);
 375         if (!NT_STATUS_IS_OK(ret)) {
 376                 DEBUG(0, ("Error storing ID -> SID: %s\n", nt_errstr(ret)));
 377                 /* try to remove the previous stored SID -> ID map */
 378                 dbwrap_delete_bystring(db, state->ksidstr);
 379                 goto done;
 380         }
 381
 382         DEBUG(10,("Stored %s <-> %s\n", state->ksidstr, state->kidstr));
 383
 384 done:
 385         talloc_free(tmp_ctx);
 386         return ret;
 387 }
 388
 389 static NTSTATUS idmap_tdb2_set_mapping(struct idmap_domain *dom, const struct id_map *map)
 390 {
 391         struct idmap_tdb2_context *ctx;
 392         NTSTATUS ret;
 393         char *ksidstr, *kidstr;
 394         struct idmap_tdb2_set_mapping_context state;
 395
 396         if (!map || !map->sid) {
 397                 return NT_STATUS_INVALID_PARAMETER;
 398         }
 399
 400         ksidstr = kidstr = NULL;
 401
 402         /* TODO: should we filter a set_mapping using low/high filters ? */
 403
 404         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 405
 406         switch (map->xid.type) {
 407
 408         case ID_TYPE_UID:
 409                 kidstr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
 410                 break;
 411
 412         case ID_TYPE_GID:
 413                 kidstr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
 414                 break;
 415
 416         default:
 417                 DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
 418                 return NT_STATUS_INVALID_PARAMETER;
 419         }
 420
 421         if (kidstr == NULL) {
 422                 DEBUG(0, ("ERROR: Out of memory!\n"));
 423                 ret = NT_STATUS_NO_MEMORY;
 424                 goto done;
 425         }
 426
 427         ksidstr = sid_string_talloc(ctx, map->sid);
 428         if (ksidstr == NULL) {
 429                 DEBUG(0, ("Out of memory!\n"));
 430                 ret = NT_STATUS_NO_MEMORY;
 431                 goto done;
 432         }
 433
 434         state.ksidstr = ksidstr;
 435         state.kidstr = kidstr;
 436
 437         ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 438                               &state);
 439
 440 done:
 441         talloc_free(ksidstr);
 442         talloc_free(kidstr);
 443         return ret;
 444 }
 445
 446 /**
 447  * Create a new mapping for an unmapped SID, also allocating a new ID.
 448  * This should be run inside a transaction.
 449  *
 450  * TODO:
 451 *  Properly integrate this with multi domain idmap config:
 452  * Currently, the allocator is default-config only.
 453  */
 454 static NTSTATUS idmap_tdb2_new_mapping(struct idmap_domain *dom, struct id_map *map)
 455 {
 456         NTSTATUS ret;
 457         struct idmap_tdb2_context *ctx;
 458
 459         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 460
 461         ret = idmap_rw_new_mapping(dom, ctx->rw_ops, map);
 462
 463         return ret;
 464 }
 465
 466
 467 /*
 468   run a script to perform a mapping
 469
 470   The script should the following command lines:
 471
 472       SIDTOID S-1-xxxx
 473       IDTOSID UID xxxx
 474       IDTOSID GID xxxx
 475
 476   and should return one of the following as a single line of text
 477      UID:xxxx
 478      GID:xxxx
 479      SID:xxxx
 480      ERR:xxxx
 481  */
 482 static NTSTATUS idmap_tdb2_script(struct idmap_tdb2_context *ctx, struct id_map *map,
 483                                   const char *fmt, ...)
 484 {
 485         va_list ap;
 486         char *cmd;
 487         FILE *p;
 488         char line[64];
 489         unsigned long v;
 490
 491         cmd = talloc_asprintf(ctx, "%s ", ctx->script);
 492         NT_STATUS_HAVE_NO_MEMORY(cmd);
 493
 494         va_start(ap, fmt);
 495         cmd = talloc_vasprintf_append(cmd, fmt, ap);
 496         va_end(ap);
 497         NT_STATUS_HAVE_NO_MEMORY(cmd);
 498
 499         p = popen(cmd, "r");
 500         talloc_free(cmd);
 501         if (p == NULL) {
 502                 return NT_STATUS_NONE_MAPPED;
 503         }
 504
 505         if (fgets(line, sizeof(line)-1, p) == NULL) {
 506                 pclose(p);
 507                 return NT_STATUS_NONE_MAPPED;
 508         }
 509         pclose(p);
 510
 511         DEBUG(10,("idmap script gave: %s\n", line));
 512
 513         if (sscanf(line, "UID:%lu", &v) == 1) {
 514                 map->xid.id   = v;
 515                 map->xid.type = ID_TYPE_UID;
 516         } else if (sscanf(line, "GID:%lu", &v) == 1) {
 517                 map->xid.id   = v;
 518                 map->xid.type = ID_TYPE_GID;
 519         } else if (strncmp(line, "SID:S-", 6) == 0) {
 520                 if (!string_to_sid(map->sid, &line[4])) {
 521                         DEBUG(0,("Bad SID in '%s' from idmap script %s\n",
 522                                  line, ctx->script));
 523                         return NT_STATUS_NONE_MAPPED;
 524                 }
 525         } else {
 526                 DEBUG(0,("Bad reply '%s' from idmap script %s\n",
 527                          line, ctx->script));
 528                 return NT_STATUS_NONE_MAPPED;
 529         }
 530
 531         return NT_STATUS_OK;
 532 }
 533
 534
 535
 536 /*
 537   Single id to sid lookup function.
 538 */
 539 static NTSTATUS idmap_tdb2_id_to_sid(struct idmap_domain *dom, struct id_map *map)
 540 {
 541         NTSTATUS ret;
 542         TDB_DATA data;
 543         char *keystr;
 544         NTSTATUS status;
 545         struct idmap_tdb2_context *ctx;
 546
 547
 548         if (!dom || !map) {
 549                 return NT_STATUS_INVALID_PARAMETER;
 550         }
 551
 552         status = idmap_tdb2_open_db(dom);
 553         NT_STATUS_NOT_OK_RETURN(status);
 554
 555         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 556
 557         /* apply filters before checking */
 558         if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 559                 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 560                                 map->xid.id, dom->low_id, dom->high_id));
 561                 return NT_STATUS_NONE_MAPPED;
 562         }
 563
 564         switch (map->xid.type) {
 565
 566         case ID_TYPE_UID:
 567                 keystr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
 568                 break;
 569
 570         case ID_TYPE_GID:
 571                 keystr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
 572                 break;
 573
 574         default:
 575                 DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
 576                 return NT_STATUS_INVALID_PARAMETER;
 577         }
 578
 579         /* final SAFE_FREE safe */
 580         data.dptr = NULL;
 581
 582         if (keystr == NULL) {
 583                 DEBUG(0, ("Out of memory!\n"));
 584                 ret = NT_STATUS_NO_MEMORY;
 585                 goto done;
 586         }
 587
 588         DEBUG(10,("Fetching record %s\n", keystr));
 589
 590         /* Check if the mapping exists */
 591         data = dbwrap_fetch_bystring(ctx->db, keystr, keystr);
 592
 593         if (!data.dptr) {
 594                 char *sidstr;
 595                 struct idmap_tdb2_set_mapping_context store_state;
 596
 597                 DEBUG(10,("Record %s not found\n", keystr));
 598                 if (ctx->script == NULL) {
 599                         ret = NT_STATUS_NONE_MAPPED;
 600                         goto done;
 601                 }
 602
 603                 ret = idmap_tdb2_script(ctx, map, "IDTOSID %s", keystr);
 604
 605                 /* store it on shared storage */
 606                 if (!NT_STATUS_IS_OK(ret)) {
 607                         goto done;
 608                 }
 609
 610                 sidstr = sid_string_talloc(keystr, map->sid);
 611                 if (!sidstr) {
 612                         ret = NT_STATUS_NO_MEMORY;
 613                         goto done;
 614                 }
 615
 616                 store_state.ksidstr = sidstr;
 617                 store_state.kidstr = keystr;
 618
 619                 ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 620                                       &store_state);
 621                 goto done;
 622         }
 623
 624         if (!string_to_sid(map->sid, (const char *)data.dptr)) {
 625                 DEBUG(10,("INVALID SID (%s) in record %s\n",
 626                         (const char *)data.dptr, keystr));
 627                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 628                 goto done;
 629         }
 630
 631         DEBUG(10,("Found record %s -> %s\n", keystr, (const char *)data.dptr));
 632         ret = NT_STATUS_OK;
 633
 634 done:
 635         talloc_free(keystr);
 636         return ret;
 637 }
 638
 639
 640 /*
 641  Single sid to id lookup function.
 642 */
 643 static NTSTATUS idmap_tdb2_sid_to_id(struct idmap_domain *dom, struct id_map *map)
 644 {
 645         NTSTATUS ret;
 646         TDB_DATA data;
 647         char *keystr;
 648         unsigned long rec_id = 0;
 649         struct idmap_tdb2_context *ctx;
 650         TALLOC_CTX *tmp_ctx = talloc_stackframe();
 651
 652         ret = idmap_tdb2_open_db(dom);
 653         NT_STATUS_NOT_OK_RETURN(ret);
 654
 655         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 656
 657         keystr = sid_string_talloc(tmp_ctx, map->sid);
 658         if (keystr == NULL) {
 659                 DEBUG(0, ("Out of memory!\n"));
 660                 ret = NT_STATUS_NO_MEMORY;
 661                 goto done;
 662         }
 663
 664         DEBUG(10,("Fetching record %s\n", keystr));
 665
 666         /* Check if sid is present in database */
 667         data = dbwrap_fetch_bystring(ctx->db, tmp_ctx, keystr);
 668         if (!data.dptr) {
 669                 char *idstr;
 670                 struct idmap_tdb2_set_mapping_context store_state;
 671
 672                 DEBUG(10,(__location__ " Record %s not found\n", keystr));
 673
 674                 if (ctx->script == NULL) {
 675                         ret = NT_STATUS_NONE_MAPPED;
 676                         goto done;
 677                 }
 678
 679                 ret = idmap_tdb2_script(ctx, map, "SIDTOID %s", keystr);
 680                 /* store it on shared storage */
 681                 if (!NT_STATUS_IS_OK(ret)) {
 682                         goto done;
 683                 }
 684
 685                 /* apply filters before returning result */
 686                 if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 687                         DEBUG(5, ("Script returned id (%u) out of range "
 688                                   "(%u - %u). Filtered!\n",
 689                                   map->xid.id, dom->low_id, dom->high_id));
 690                         ret = NT_STATUS_NONE_MAPPED;
 691                         goto done;
 692                 }
 693
 694                 idstr = talloc_asprintf(tmp_ctx, "%cID %lu",
 695                                         map->xid.type == ID_TYPE_UID?'U':'G',
 696                                         (unsigned long)map->xid.id);
 697                 if (idstr == NULL) {
 698                         ret = NT_STATUS_NO_MEMORY;
 699                         goto done;
 700                 }
 701
 702                 store_state.ksidstr = keystr;
 703                 store_state.kidstr = idstr;
 704
 705                 ret = dbwrap_trans_do(ctx->db, idmap_tdb2_set_mapping_action,
 706                                       &store_state);
 707                 goto done;
 708         }
 709
 710         /* What type of record is this ? */
 711         if (sscanf((const char *)data.dptr, "UID %lu", &rec_id) == 1) { /* Try a UID record. */
 712                 map->xid.id = rec_id;
 713                 map->xid.type = ID_TYPE_UID;
 714                 DEBUG(10,("Found uid record %s -> %s \n", keystr, (const char *)data.dptr ));
 715                 ret = NT_STATUS_OK;
 716
 717         } else if (sscanf((const char *)data.dptr, "GID %lu", &rec_id) == 1) { /* Try a GID record. */
 718                 map->xid.id = rec_id;
 719                 map->xid.type = ID_TYPE_GID;
 720                 DEBUG(10,("Found gid record %s -> %s \n", keystr, (const char *)data.dptr ));
 721                 ret = NT_STATUS_OK;
 722
 723         } else { /* Unknown record type ! */
 724                 DEBUG(2, ("Found INVALID record %s -> %s\n", keystr, (const char *)data.dptr));
 725                 ret = NT_STATUS_INTERNAL_DB_ERROR;
 726                 goto done;
 727         }
 728
 729         /* apply filters before returning result */
 730         if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
 731                 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 732                                 map->xid.id, dom->low_id, dom->high_id));
 733                 ret = NT_STATUS_NONE_MAPPED;
 734         }
 735
 736 done:
 737         talloc_free(tmp_ctx);
 738         return ret;
 739 }
 740
 741 /*
 742   lookup a set of unix ids.
 743 */
 744 static NTSTATUS idmap_tdb2_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
 745 {
 746         NTSTATUS ret;
 747         int i;
 748
 749         /* initialize the status to avoid suprise */
 750         for (i = 0; ids[i]; i++) {
 751                 ids[i]->status = ID_UNKNOWN;
 752         }
 753
 754         for (i = 0; ids[i]; i++) {
 755                 ret = idmap_tdb2_id_to_sid(dom, ids[i]);
 756                 if ( ! NT_STATUS_IS_OK(ret)) {
 757
 758                         /* if it is just a failed mapping continue */
 759                         if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
 760
 761                                 /* make sure it is marked as unmapped */
 762                                 ids[i]->status = ID_UNMAPPED;
 763                                 continue;
 764                         }
 765
 766                         /* some fatal error occurred, return immediately */
 767                         goto done;
 768                 }
 769
 770                 /* all ok, id is mapped */
 771                 ids[i]->status = ID_MAPPED;
 772         }
 773
 774         ret = NT_STATUS_OK;
 775
 776 done:
 777         return ret;
 778 }
 779
 780 /*
 781   lookup a set of sids.
 782 */
 783
 784 struct idmap_tdb2_sids_to_unixids_context {
 785         struct idmap_domain *dom;
 786         struct id_map **ids;
 787         bool allocate_unmapped;
 788 };
 789
 790 static NTSTATUS idmap_tdb2_sids_to_unixids_action(struct db_context *db,
 791                                                   void *private_data)
 792 {
 793         struct idmap_tdb2_sids_to_unixids_context *state;
 794         int i;
 795         NTSTATUS ret = NT_STATUS_OK;
 796
 797         state = (struct idmap_tdb2_sids_to_unixids_context *)private_data;
 798
 799         DEBUG(10, ("idmap_tdb2_sids_to_unixids_action: "
 800                    " domain: [%s], allocate: %s\n",
 801                    state->dom->name,
 802                    state->allocate_unmapped ? "yes" : "no"));
 803
 804         for (i = 0; state->ids[i]; i++) {
 805                 if ((state->ids[i]->status == ID_UNKNOWN) ||
 806                     /* retry if we could not map in previous run: */
 807                     (state->ids[i]->status == ID_UNMAPPED))
 808                 {
 809                         NTSTATUS ret2;
 810
 811                         ret2 = idmap_tdb2_sid_to_id(state->dom, state->ids[i]);
 812                         if (!NT_STATUS_IS_OK(ret2)) {
 813
 814                                 /* if it is just a failed mapping, continue */
 815                                 if (NT_STATUS_EQUAL(ret2, NT_STATUS_NONE_MAPPED)) {
 816
 817                                         /* make sure it is marked as unmapped */
 818                                         state->ids[i]->status = ID_UNMAPPED;
 819                                         ret = STATUS_SOME_UNMAPPED;
 820                                 } else {
 821                                         /* some fatal error occurred, return immediately */
 822                                         ret = ret2;
 823                                         goto done;
 824                                 }
 825                         } else {
 826                                 /* all ok, id is mapped */
 827                                 state->ids[i]->status = ID_MAPPED;
 828                         }
 829                 }
 830
 831                 if ((state->ids[i]->status == ID_UNMAPPED) &&
 832                     state->allocate_unmapped)
 833                 {
 834                         ret = idmap_tdb2_new_mapping(state->dom, state->ids[i]);
 835                         if (!NT_STATUS_IS_OK(ret)) {
 836                                 goto done;
 837                         }
 838                 }
 839         }
 840
 841 done:
 842         return ret;
 843 }
 844
 845 static NTSTATUS idmap_tdb2_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
 846 {
 847         NTSTATUS ret;
 848         int i;
 849         struct idmap_tdb2_sids_to_unixids_context state;
 850         struct idmap_tdb2_context *ctx;
 851
 852         ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
 853
 854         /* initialize the status to avoid suprise */
 855         for (i = 0; ids[i]; i++) {
 856                 ids[i]->status = ID_UNKNOWN;
 857         }
 858
 859         state.dom = dom;
 860         state.ids = ids;
 861         state.allocate_unmapped = false;
 862
 863         ret = idmap_tdb2_sids_to_unixids_action(ctx->db, &state);
 864
 865         if (NT_STATUS_EQUAL(ret, STATUS_SOME_UNMAPPED) && !dom->read_only) {
 866                 state.allocate_unmapped = true;
 867                 ret = dbwrap_trans_do(ctx->db,
 868                                       idmap_tdb2_sids_to_unixids_action,
 869                                       &state);
 870         }
 871
 872         return ret;
 873 }
 874
 875
 876 static struct idmap_methods db_methods = {
 877         .init            = idmap_tdb2_db_init,
 878         .unixids_to_sids = idmap_tdb2_unixids_to_sids,
 879         .sids_to_unixids = idmap_tdb2_sids_to_unixids,
 880         .allocate_id     = idmap_tdb2_get_new_id
 881 };
 882
 883 NTSTATUS idmap_tdb2_init(void)
 884 {
 885         return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb2", &db_methods);
 886 }