source4/dsdb/repl/replicated_objects.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   3    Helper functions for applying replicated objects
   4
   5    Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 */
  21
  22 #include "includes.h"
  23 #include "dsdb/samdb/samdb.h"
  24 #include <ldb_errors.h>
  25 #include "../lib/util/dlinklist.h"
  26 #include "librpc/gen_ndr/ndr_misc.h"
  27 #include "librpc/gen_ndr/ndr_drsuapi.h"
  28 #include "librpc/gen_ndr/ndr_drsblobs.h"
  29 #include "../lib/crypto/crypto.h"
  30 #include "../libcli/drsuapi/drsuapi.h"
  31 #include "libcli/auth/libcli_auth.h"
  32 #include "param/param.h"
  33
  34 static WERROR dsdb_repl_merge_working_schema(struct ldb_context *ldb,
  35                                              struct dsdb_schema *dest_schema,
  36                                              const struct dsdb_schema *ref_schema)
  37 {
  38         const struct dsdb_class *cur_class = NULL;
  39         const struct dsdb_attribute *cur_attr = NULL;
  40         int ret;
  41
  42         for (cur_class = ref_schema->classes;
  43              cur_class;
  44              cur_class = cur_class->next)
  45         {
  46                 const struct dsdb_class *tmp1;
  47                 struct dsdb_class *tmp2;
  48
  49                 tmp1 = dsdb_class_by_governsID_id(dest_schema,
  50                                                   cur_class->governsID_id);
  51                 if (tmp1 != NULL) {
  52                         continue;
  53                 }
  54
  55                 /*
  56                  * Do a shallow copy so that original next and prev are
  57                  * not modified, we don't need to do a deep copy
  58                  * as the rest won't be modified and this is for
  59                  * a short lived object.
  60                  */
  61                 tmp2 = talloc(dest_schema, struct dsdb_class);
  62                 if (tmp2 == NULL) {
  63                         return WERR_NOMEM;
  64                 }
  65                 *tmp2 = *cur_class;
  66                 DLIST_ADD(dest_schema->classes, tmp2);
  67         }
  68
  69         for (cur_attr = ref_schema->attributes;
  70              cur_attr;
  71              cur_attr = cur_attr->next)
  72         {
  73                 const struct dsdb_attribute *tmp1;
  74                 struct dsdb_attribute *tmp2;
  75
  76                 tmp1 = dsdb_attribute_by_attributeID_id(dest_schema,
  77                                                 cur_attr->attributeID_id);
  78                 if (tmp1 != NULL) {
  79                         continue;
  80                 }
  81
  82                 /*
  83                  * Do a shallow copy so that original next and prev are
  84                  * not modified, we don't need to do a deep copy
  85                  * as the rest won't be modified and this is for
  86                  * a short lived object.
  87                  */
  88                 tmp2 = talloc(dest_schema, struct dsdb_attribute);
  89                 if (tmp2 == NULL) {
  90                         return WERR_NOMEM;
  91                 }
  92                 *tmp2 = *cur_attr;
  93                 DLIST_ADD(dest_schema->attributes, tmp2);
  94         }
  95
  96         ret = dsdb_setup_sorted_accessors(ldb, dest_schema);
  97         if (LDB_SUCCESS != ret) {
  98                 DEBUG(0,("Failed to add new attribute to reference schema!\n"));
  99                 return WERR_INTERNAL_ERROR;
 100         }
 101
 102         return WERR_OK;
 103 }
 104
 105 WERROR dsdb_repl_resolve_working_schema(struct ldb_context *ldb,
 106                                         TALLOC_CTX *mem_ctx,
 107                                         struct dsdb_schema_prefixmap *pfm_remote,
 108                                         uint32_t cycle_before_switching,
 109                                         struct dsdb_schema *initial_schema,
 110                                         struct dsdb_schema *resulting_schema,
 111                                         uint32_t object_count,
 112                                         const struct drsuapi_DsReplicaObjectListItemEx *first_object)
 113 {
 114         struct schema_list {
 115                 struct schema_list *next, *prev;
 116                 const struct drsuapi_DsReplicaObjectListItemEx *obj;
 117         };
 118         struct schema_list *schema_list = NULL, *schema_list_item, *schema_list_next_item;
 119         WERROR werr;
 120         struct dsdb_schema *working_schema;
 121         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 122         DATA_BLOB empty_key = data_blob_null;
 123         int ret, pass_no;
 124         uint32_t ignore_attids[] = {
 125                         DRSUAPI_ATTID_auxiliaryClass,
 126                         DRSUAPI_ATTID_mayContain,
 127                         DRSUAPI_ATTID_mustContain,
 128                         DRSUAPI_ATTID_possSuperiors,
 129                         DRSUAPI_ATTID_systemPossSuperiors,
 130                         DRSUAPI_ATTID_INVALID
 131         };
 132
 133         /* create a list of objects yet to be converted */
 134         for (cur = first_object; cur; cur = cur->next_object) {
 135                 schema_list_item = talloc(mem_ctx, struct schema_list);
 136                 if (schema_list_item == NULL) {
 137                         return WERR_NOMEM;
 138                 }
 139
 140                 schema_list_item->obj = cur;
 141                 DLIST_ADD_END(schema_list, schema_list_item);
 142         }
 143
 144         /* resolve objects until all are resolved and in local schema */
 145         pass_no = 1;
 146         working_schema = initial_schema;
 147
 148         while (schema_list) {
 149                 uint32_t converted_obj_count = 0;
 150                 uint32_t failed_obj_count = 0;
 151
 152                 if (resulting_schema != working_schema) {
 153                         /*
 154                          * If the selfmade schema is not the schema used to
 155                          * translate and validate replicated object,
 156                          * Which means that we are using the bootstrap schema
 157                          * Then we add attributes and classes that were already
 158                          * translated to the working schema, the idea is that
 159                          * we might need to add new attributes and classes
 160                          * to be able to translate critical replicated objects
 161                          * and without that we wouldn't be able to translate them
 162                          */
 163                         werr = dsdb_repl_merge_working_schema(ldb,
 164                                                         working_schema,
 165                                                         resulting_schema);
 166                         if (!W_ERROR_IS_OK(werr)) {
 167                                 return werr;
 168                         }
 169                 }
 170
 171                 for (schema_list_item = schema_list;
 172                      schema_list_item;
 173                      schema_list_item=schema_list_next_item) {
 174                         struct dsdb_extended_replicated_object object;
 175
 176                         cur = schema_list_item->obj;
 177
 178                         /*
 179                          * Save the next item, now we have saved out
 180                          * the current one, so we can DLIST_REMOVE it
 181                          * safely
 182                          */
 183                         schema_list_next_item = schema_list_item->next;
 184
 185                         /*
 186                          * Convert the objects into LDB messages using the
 187                          * schema we have so far. It's ok if we fail to convert
 188                          * an object. We should convert more objects on next pass.
 189                          */
 190                         werr = dsdb_convert_object_ex(ldb, working_schema,
 191                                                       NULL,
 192                                                       pfm_remote,
 193                                                       cur, &empty_key,
 194                                                       ignore_attids,
 195                                                       0,
 196                                                       schema_list_item, &object);
 197                         if (!W_ERROR_IS_OK(werr)) {
 198                                 DEBUG(4,("debug: Failed to convert schema "
 199                                          "object %s into ldb msg, "
 200                                          "will try during next loop\n",
 201                                          cur->object.identifier->dn));
 202
 203                                 failed_obj_count++;
 204                         } else {
 205                                 /*
 206                                  * Convert the schema from ldb_message format
 207                                  * (OIDs as OID strings) into schema, using
 208                                  * the remote prefixMap
 209                                  *
 210                                  * It's not likely, but possible to get the
 211                                  * same object twice and we should keep
 212                                  * the last instance.
 213                                  */
 214                                 werr = dsdb_schema_set_el_from_ldb_msg_dups(ldb,
 215                                                                 resulting_schema,
 216                                                                 object.msg,
 217                                                                 true);
 218                                 if (!W_ERROR_IS_OK(werr)) {
 219                                         DEBUG(4,("debug: failed to convert "
 220                                                  "object %s into a schema element, "
 221                                                  "will try during next loop: %s\n",
 222                                                  ldb_dn_get_linearized(object.msg->dn),
 223                                                  win_errstr(werr)));
 224                                         failed_obj_count++;
 225                                 } else {
 226                                         DEBUG(8,("Converted object %s into a schema element\n",
 227                                                  ldb_dn_get_linearized(object.msg->dn)));
 228                                         DLIST_REMOVE(schema_list, schema_list_item);
 229                                         TALLOC_FREE(schema_list_item);
 230                                         converted_obj_count++;
 231                                 }
 232                         }
 233                 }
 234
 235                 DEBUG(4,("Schema load pass %d: converted %d, %d of %d objects left to be converted.\n",
 236                          pass_no, converted_obj_count, failed_obj_count, object_count));
 237
 238                 /* check if we converted any objects in this pass */
 239                 if (converted_obj_count == 0) {
 240                         DEBUG(0,("Can't continue Schema load: "
 241                                  "didn't manage to convert any objects: "
 242                                  "all %d remaining of %d objects "
 243                                  "failed to convert\n",
 244                                  failed_obj_count, object_count));
 245                         return WERR_INTERNAL_ERROR;
 246                 }
 247
 248                 /*
 249                  * Don't try to load the schema if there is missing object
 250                  * _and_ we are on the first pass as some critical objects
 251                  * might be missing.
 252                  */
 253                 if (failed_obj_count == 0 || pass_no > cycle_before_switching) {
 254                         /* prepare for another cycle */
 255                         working_schema = resulting_schema;
 256
 257                         ret = dsdb_setup_sorted_accessors(ldb, working_schema);
 258                         if (LDB_SUCCESS != ret) {
 259                                 DEBUG(0,("Failed to create schema-cache indexes!\n"));
 260                                 return WERR_INTERNAL_ERROR;
 261                         }
 262                 }
 263                 pass_no++;
 264         }
 265
 266         return WERR_OK;
 267 }
 268
 269 /**
 270  * Multi-pass working schema creation
 271  * Function will:
 272  *  - shallow copy initial schema supplied
 273  *  - create a working schema in multiple passes
 274  *    until all objects are resolved
 275  * Working schema is a schema with Attributes, Classes
 276  * and indexes, but w/o subClassOf, possibleSupperiors etc.
 277  * It is to be used just us cache for converting attribute values.
 278  */
 279 WERROR dsdb_repl_make_working_schema(struct ldb_context *ldb,
 280                                      const struct dsdb_schema *initial_schema,
 281                                      const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 282                                      uint32_t object_count,
 283                                      const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 284                                      const DATA_BLOB *gensec_skey,
 285                                      TALLOC_CTX *mem_ctx,
 286                                      struct dsdb_schema **_schema_out)
 287 {
 288         WERROR werr;
 289         struct dsdb_schema_prefixmap *pfm_remote;
 290         struct dsdb_schema *working_schema;
 291
 292         /* make a copy of the iniatial_scheam so we don't mess with it */
 293         working_schema = dsdb_schema_copy_shallow(mem_ctx, ldb, initial_schema);
 294         if (!working_schema) {
 295                 DEBUG(0,(__location__ ": schema copy failed!\n"));
 296                 return WERR_NOMEM;
 297         }
 298
 299         /* we are going to need remote prefixMap for decoding */
 300         werr = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
 301                                                 mem_ctx, &pfm_remote, NULL);
 302         if (!W_ERROR_IS_OK(werr)) {
 303                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
 304                          win_errstr(werr)));
 305                 return werr;
 306         }
 307
 308         werr = dsdb_repl_resolve_working_schema(ldb, mem_ctx,
 309                                                 pfm_remote,
 310                                                 0, /* cycle_before_switching */
 311                                                 working_schema,
 312                                                 working_schema,
 313                                                 object_count,
 314                                                 first_object);
 315         if (!W_ERROR_IS_OK(werr)) {
 316                 DEBUG(0, ("%s: dsdb_repl_resolve_working_schema() failed: %s",
 317                           __location__, win_errstr(werr)));
 318                 return werr;
 319         }
 320
 321         *_schema_out = working_schema;
 322
 323         return WERR_OK;
 324 }
 325
 326 static bool dsdb_attid_in_list(const uint32_t attid_list[], uint32_t attid)
 327 {
 328         const uint32_t *cur;
 329         if (!attid_list) {
 330                 return false;
 331         }
 332         for (cur = attid_list; *cur != DRSUAPI_ATTID_INVALID; cur++) {
 333                 if (*cur == attid) {
 334                         return true;
 335                 }
 336         }
 337         return false;
 338 }
 339
 340 WERROR dsdb_convert_object_ex(struct ldb_context *ldb,
 341                               const struct dsdb_schema *schema,
 342                               struct ldb_dn *partition_dn,
 343                               const struct dsdb_schema_prefixmap *pfm_remote,
 344                               const struct drsuapi_DsReplicaObjectListItemEx *in,
 345                               const DATA_BLOB *gensec_skey,
 346                               const uint32_t *ignore_attids,
 347                               uint32_t dsdb_repl_flags,
 348                               TALLOC_CTX *mem_ctx,
 349                               struct dsdb_extended_replicated_object *out)
 350 {
 351         NTSTATUS nt_status;
 352         WERROR status = WERR_OK;
 353         uint32_t i;
 354         struct ldb_message *msg;
 355         struct replPropertyMetaDataBlob *md;
 356         int instanceType;
 357         struct ldb_message_element *instanceType_e = NULL;
 358         struct ldb_val guid_value;
 359         struct ldb_val parent_guid_value;
 360         NTTIME whenChanged = 0;
 361         time_t whenChanged_t;
 362         const char *whenChanged_s;
 363         struct drsuapi_DsReplicaAttribute *name_a = NULL;
 364         struct drsuapi_DsReplicaMetaData *name_d = NULL;
 365         struct replPropertyMetaData1 *rdn_m = NULL;
 366         struct dom_sid *sid = NULL;
 367         uint32_t rid = 0;
 368         uint32_t attr_count;
 369         int ret;
 370
 371         if (!in->object.identifier) {
 372                 return WERR_FOOBAR;
 373         }
 374
 375         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 376                 return WERR_FOOBAR;
 377         }
 378
 379         if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
 380                 return WERR_FOOBAR;
 381         }
 382
 383         if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
 384                 return WERR_FOOBAR;
 385         }
 386
 387         sid = &in->object.identifier->sid;
 388         if (sid->num_auths > 0) {
 389                 rid = sid->sub_auths[sid->num_auths - 1];
 390         }
 391
 392         msg = ldb_msg_new(mem_ctx);
 393         W_ERROR_HAVE_NO_MEMORY(msg);
 394
 395         msg->dn                 = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 396         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 397
 398         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 399         msg->elements           = talloc_array(msg, struct ldb_message_element,
 400                                                msg->num_elements + 1); /* +1 because of the RDN attribute */
 401         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 402
 403         md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
 404         W_ERROR_HAVE_NO_MEMORY(md);
 405
 406         md->version             = 1;
 407         md->reserved            = 0;
 408         md->ctr.ctr1.count      = in->meta_data_ctr->count;
 409         md->ctr.ctr1.reserved   = 0;
 410         md->ctr.ctr1.array      = talloc_array(mem_ctx,
 411                                                struct replPropertyMetaData1,
 412                                                md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
 413         W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
 414
 415         for (i=0, attr_count=0; i < in->meta_data_ctr->count; i++, attr_count++) {
 416                 struct drsuapi_DsReplicaAttribute *a;
 417                 struct drsuapi_DsReplicaMetaData *d;
 418                 struct replPropertyMetaData1 *m;
 419                 struct ldb_message_element *e;
 420                 uint32_t j;
 421
 422                 a = &in->object.attribute_ctr.attributes[i];
 423                 d = &in->meta_data_ctr->meta_data[i];
 424                 m = &md->ctr.ctr1.array[attr_count];
 425                 e = &msg->elements[attr_count];
 426
 427                 if (dsdb_attid_in_list(ignore_attids, a->attid)) {
 428                         attr_count--;
 429                         continue;
 430                 }
 431
 432                 if (GUID_all_zero(&d->originating_invocation_id)) {
 433                         status = WERR_DS_SRC_GUID_MISMATCH;
 434                         DEBUG(0, ("Refusing replication of object containing invalid zero invocationID on attribute %d of %s: %s\n",
 435                                   a->attid,
 436                                   ldb_dn_get_linearized(msg->dn),
 437                                   win_errstr(status)));
 438                         return status;
 439                 }
 440
 441                 if (a->attid == DRSUAPI_ATTID_instanceType) {
 442                         if (instanceType_e != NULL) {
 443                                 return WERR_FOOBAR;
 444                         }
 445                         instanceType_e = e;
 446                 }
 447
 448                 for (j=0; j<a->value_ctr.num_values; j++) {
 449                         status = drsuapi_decrypt_attribute(a->value_ctr.values[j].blob,
 450                                                            gensec_skey, rid,
 451                                                            dsdb_repl_flags, a);
 452                         if (!W_ERROR_IS_OK(status)) {
 453                                 break;
 454                         }
 455                 }
 456                 if (W_ERROR_EQUAL(status, WERR_TOO_MANY_SECRETS)) {
 457                         WERROR get_name_status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
 458                                                                                a, msg->elements, e, NULL);
 459                         if (W_ERROR_IS_OK(get_name_status)) {
 460                                 DEBUG(0, ("Unxpectedly got secret value %s on %s from DRS server\n",
 461                                           e->name, ldb_dn_get_linearized(msg->dn)));
 462                         } else {
 463                                 DEBUG(0, ("Unxpectedly got secret value on %s from DRS server",
 464                                           ldb_dn_get_linearized(msg->dn)));
 465                         }
 466                 } else if (!W_ERROR_IS_OK(status)) {
 467                         return status;
 468                 }
 469
 470                 /*
 471                  * This function also fills in the local attid value,
 472                  * based on comparing the remote and local prefixMap
 473                  * tables.  If we don't convert the value, then we can
 474                  * have invalid values in the replPropertyMetaData we
 475                  * store on disk, as the prefixMap is per host, not
 476                  * per-domain.  This may be why Microsoft added the
 477                  * msDS-IntID feature, however this is not used for
 478                  * extra attributes in the schema partition itself.
 479                  */
 480                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
 481                                                        a, msg->elements, e,
 482                                                        &m->attid);
 483                 W_ERROR_NOT_OK_RETURN(status);
 484
 485                 m->version                      = d->version;
 486                 m->originating_change_time      = d->originating_change_time;
 487                 m->originating_invocation_id    = d->originating_invocation_id;
 488                 m->originating_usn              = d->originating_usn;
 489                 m->local_usn                    = 0;
 490
 491                 if (d->originating_change_time > whenChanged) {
 492                         whenChanged = d->originating_change_time;
 493                 }
 494
 495                 if (a->attid == DRSUAPI_ATTID_name) {
 496                         name_a = a;
 497                         name_d = d;
 498                 }
 499         }
 500
 501         msg->num_elements = attr_count;
 502         md->ctr.ctr1.count = attr_count;
 503         if (name_a) {
 504                 rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
 505         }
 506
 507         if (rdn_m) {
 508                 struct ldb_message_element *el;
 509                 const char *rdn_name = NULL;
 510                 const struct ldb_val *rdn_value = NULL;
 511                 const struct dsdb_attribute *rdn_attr = NULL;
 512                 uint32_t rdn_attid;
 513
 514                 /*
 515                  * We only need the schema calls for the RDN in this
 516                  * codepath, and by doing this we avoid needing to
 517                  * have the dsdb_attribute_by_lDAPDisplayName accessor
 518                  * working during the schema load.
 519                  */
 520                 rdn_name        = ldb_dn_get_rdn_name(msg->dn);
 521                 rdn_attr        = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
 522                 if (!rdn_attr) {
 523                         return WERR_FOOBAR;
 524                 }
 525                 rdn_attid       = rdn_attr->attributeID_id;
 526                 rdn_value       = ldb_dn_get_rdn_val(msg->dn);
 527
 528                 el = ldb_msg_find_element(msg, rdn_attr->lDAPDisplayName);
 529                 if (!el) {
 530                         ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
 531                         if (ret != LDB_SUCCESS) {
 532                                 return WERR_FOOBAR;
 533                         }
 534                 } else {
 535                         if (el->num_values != 1) {
 536                                 DEBUG(0,(__location__ ": Unexpected num_values=%u\n",
 537                                          el->num_values));
 538                                 return WERR_FOOBAR;
 539                         }
 540                         if (!ldb_val_equal_exact(&el->values[0], rdn_value)) {
 541                                 DEBUG(0,(__location__ ": RDN value changed? '%*.*s' '%*.*s'\n",
 542                                          (int)el->values[0].length, (int)el->values[0].length, el->values[0].data,
 543                                          (int)rdn_value->length, (int)rdn_value->length, rdn_value->data));
 544                                 return WERR_FOOBAR;
 545                         }
 546                 }
 547
 548                 rdn_m->attid                            = rdn_attid;
 549                 rdn_m->version                          = name_d->version;
 550                 rdn_m->originating_change_time          = name_d->originating_change_time;
 551                 rdn_m->originating_invocation_id        = name_d->originating_invocation_id;
 552                 rdn_m->originating_usn                  = name_d->originating_usn;
 553                 rdn_m->local_usn                        = 0;
 554                 md->ctr.ctr1.count++;
 555
 556         }
 557
 558         if (instanceType_e == NULL) {
 559                 return WERR_FOOBAR;
 560         }
 561
 562         instanceType = ldb_msg_find_attr_as_int(msg, "instanceType", 0);
 563
 564         if ((instanceType & INSTANCE_TYPE_IS_NC_HEAD)
 565             && partition_dn != NULL) {
 566                 int partition_dn_cmp = ldb_dn_compare(partition_dn, msg->dn);
 567                 if (partition_dn_cmp != 0) {
 568                         DEBUG(4, ("Remote server advised us of a new partition %s while processing %s, ignoring\n",
 569                                   ldb_dn_get_linearized(msg->dn),
 570                                   ldb_dn_get_linearized(partition_dn)));
 571                         return WERR_DS_ADD_REPLICA_INHIBITED;
 572                 }
 573         }
 574
 575         if (dsdb_repl_flags & DSDB_REPL_FLAG_PARTIAL_REPLICA) {
 576                 /* the instanceType type for partial_replica
 577                    replication is sent via DRS with TYPE_WRITE set, but
 578                    must be used on the client with TYPE_WRITE removed
 579                 */
 580                 if (instanceType & INSTANCE_TYPE_WRITE) {
 581                         /*
 582                          * Make sure we do not change the order
 583                          * of msg->elements!
 584                          *
 585                          * That's why we use
 586                          * instanceType_e->num_values = 0
 587                          * instead of
 588                          * ldb_msg_remove_attr(msg, "instanceType");
 589                          */
 590                         struct ldb_message_element *e;
 591
 592                         e = ldb_msg_find_element(msg, "instanceType");
 593                         if (e != instanceType_e) {
 594                                 DEBUG(0,("instanceType_e[%p] changed to e[%p]\n",
 595                                          instanceType_e, e));
 596                                 return WERR_FOOBAR;
 597                         }
 598
 599                         instanceType_e->num_values = 0;
 600
 601                         instanceType &= ~INSTANCE_TYPE_WRITE;
 602                         if (ldb_msg_add_fmt(msg, "instanceType", "%d", instanceType) != LDB_SUCCESS) {
 603                                 return WERR_INTERNAL_ERROR;
 604                         }
 605                 }
 606         } else {
 607                 if (!(instanceType & INSTANCE_TYPE_WRITE)) {
 608                         DEBUG(0, ("Refusing to replicate %s from a read-only repilca into a read-write replica!\n",
 609                                   ldb_dn_get_linearized(msg->dn)));
 610                         return WERR_DS_DRA_SOURCE_IS_PARTIAL_REPLICA;
 611                 }
 612         }
 613
 614         whenChanged_t = nt_time_to_unix(whenChanged);
 615         whenChanged_s = ldb_timestring(msg, whenChanged_t);
 616         W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
 617
 618         nt_status = GUID_to_ndr_blob(&in->object.identifier->guid, msg, &guid_value);
 619         if (!NT_STATUS_IS_OK(nt_status)) {
 620                 return ntstatus_to_werror(nt_status);
 621         }
 622
 623         if (in->parent_object_guid) {
 624                 nt_status = GUID_to_ndr_blob(in->parent_object_guid, msg, &parent_guid_value);
 625                 if (!NT_STATUS_IS_OK(nt_status)) {
 626                         return ntstatus_to_werror(nt_status);
 627                 }
 628         } else {
 629                 parent_guid_value = data_blob_null;
 630         }
 631
 632         out->msg                = msg;
 633         out->guid_value         = guid_value;
 634         out->parent_guid_value  = parent_guid_value;
 635         out->when_changed       = whenChanged_s;
 636         out->meta_data          = md;
 637         return WERR_OK;
 638 }
 639
 640 WERROR dsdb_replicated_objects_convert(struct ldb_context *ldb,
 641                                        const struct dsdb_schema *schema,
 642                                        struct ldb_dn *partition_dn,
 643                                        const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 644                                        uint32_t object_count,
 645                                        const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 646                                        uint32_t linked_attributes_count,
 647                                        const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
 648                                        const struct repsFromTo1 *source_dsa,
 649                                        const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
 650                                        const DATA_BLOB *gensec_skey,
 651                                        uint32_t dsdb_repl_flags,
 652                                        TALLOC_CTX *mem_ctx,
 653                                        struct dsdb_extended_replicated_objects **objects)
 654 {
 655         WERROR status;
 656         struct dsdb_schema_prefixmap *pfm_remote;
 657         struct dsdb_extended_replicated_objects *out;
 658         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 659         uint32_t i;
 660
 661         out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
 662         W_ERROR_HAVE_NO_MEMORY(out);
 663         out->version            = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
 664         out->dsdb_repl_flags    = dsdb_repl_flags;
 665
 666         /*
 667          * Ensure schema is kept valid for as long as 'out'
 668          * which may contain pointers to it
 669          */
 670         schema = talloc_reference(out, schema);
 671         W_ERROR_HAVE_NO_MEMORY(schema);
 672
 673         status = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
 674                                                   out, &pfm_remote, NULL);
 675         if (!W_ERROR_IS_OK(status)) {
 676                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
 677                          win_errstr(status)));
 678                 talloc_free(out);
 679                 return status;
 680         }
 681
 682         if (ldb_dn_compare(partition_dn, ldb_get_schema_basedn(ldb)) != 0) {
 683                 /*
 684                  * check for schema changes in case
 685                  * we are not replicating Schema NC
 686                  */
 687                 status = dsdb_schema_info_cmp(schema, mapping_ctr);
 688                 if (!W_ERROR_IS_OK(status)) {
 689                         DEBUG(1,("Remote schema has changed while replicating %s\n",
 690                                  ldb_dn_get_linearized(partition_dn)));
 691                         talloc_free(out);
 692                         return status;
 693                 }
 694         }
 695
 696         out->partition_dn       = partition_dn;
 697
 698         out->source_dsa         = source_dsa;
 699         out->uptodateness_vector= uptodateness_vector;
 700
 701         out->num_objects        = 0;
 702         out->objects            = talloc_array(out,
 703                                                struct dsdb_extended_replicated_object,
 704                                                object_count);
 705         W_ERROR_HAVE_NO_MEMORY_AND_FREE(out->objects, out);
 706
 707         /* pass the linked attributes down to the repl_meta_data
 708            module */
 709         out->linked_attributes_count = linked_attributes_count;
 710         out->linked_attributes       = linked_attributes;
 711
 712         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 713                 if (i == object_count) {
 714                         talloc_free(out);
 715                         return WERR_FOOBAR;
 716                 }
 717
 718                 status = dsdb_convert_object_ex(ldb, schema, out->partition_dn,
 719                                                 pfm_remote,
 720                                                 cur, gensec_skey,
 721                                                 NULL,
 722                                                 dsdb_repl_flags,
 723                                                 out->objects,
 724                                                 &out->objects[out->num_objects]);
 725
 726                 /*
 727                  * Check to see if we have been advised of a
 728                  * subdomain or new application partition.  We don't
 729                  * want to start on that here, instead the caller
 730                  * should consider if it would like to replicate it
 731                  * based on the cross-ref object.
 732                  */
 733                 if (W_ERROR_EQUAL(status, WERR_DS_ADD_REPLICA_INHIBITED)) {
 734                         continue;
 735                 }
 736
 737                 if (!W_ERROR_IS_OK(status)) {
 738                         talloc_free(out);
 739                         DEBUG(0,("Failed to convert object %s: %s\n",
 740                                  cur->object.identifier->dn,
 741                                  win_errstr(status)));
 742                         return status;
 743                 }
 744
 745                 /* Assuming we didn't skip or error, increment the number of objects */
 746                 out->num_objects++;
 747         }
 748         out->objects = talloc_realloc(out, out->objects,
 749                                       struct dsdb_extended_replicated_object,
 750                                       out->num_objects);
 751         if (out->num_objects != 0 && out->objects == NULL) {
 752                 talloc_free(out);
 753                 return WERR_FOOBAR;
 754         }
 755         if (i != object_count) {
 756                 talloc_free(out);
 757                 return WERR_FOOBAR;
 758         }
 759
 760         /* free pfm_remote, we won't need it anymore */
 761         talloc_free(pfm_remote);
 762
 763         *objects = out;
 764         return WERR_OK;
 765 }
 766
 767 /**
 768  * Commits a list of replicated objects.
 769  *
 770  * @param working_schema dsdb_schema to be used for resolving
 771  *                       Classes/Attributes during Schema replication. If not NULL,
 772  *                       it will be set on ldb and used while committing replicated objects
 773  */
 774 WERROR dsdb_replicated_objects_commit(struct ldb_context *ldb,
 775                                       struct dsdb_schema *working_schema,
 776                                       struct dsdb_extended_replicated_objects *objects,
 777                                       uint64_t *notify_uSN)
 778 {
 779         WERROR werr;
 780         struct ldb_result *ext_res;
 781         struct dsdb_schema *cur_schema = NULL;
 782         struct dsdb_schema *new_schema = NULL;
 783         int ret;
 784         uint64_t seq_num1, seq_num2;
 785         bool used_global_schema = false;
 786
 787         TALLOC_CTX *tmp_ctx = talloc_new(objects);
 788         if (!tmp_ctx) {
 789                 DEBUG(0,("Failed to start talloc\n"));
 790                 return WERR_NOMEM;
 791         }
 792
 793         /* TODO: handle linked attributes */
 794
 795         /* wrap the extended operation in a transaction
 796            See [MS-DRSR] 3.3.2 Transactions
 797          */
 798         ret = ldb_transaction_start(ldb);
 799         if (ret != LDB_SUCCESS) {
 800                 DEBUG(0,(__location__ " Failed to start transaction\n"));
 801                 return WERR_FOOBAR;
 802         }
 803
 804         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num1, NULL);
 805         if (ret != LDB_SUCCESS) {
 806                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 807                 ldb_transaction_cancel(ldb);
 808                 TALLOC_FREE(tmp_ctx);
 809                 return WERR_FOOBAR;
 810         }
 811
 812         /*
 813          * Set working_schema for ldb in case we are replicating from Schema NC.
 814          * Schema won't be reloaded during Replicated Objects commit, as it is
 815          * done in a transaction. So we need some way to search for newly
 816          * added Classes and Attributes
 817          */
 818         if (working_schema) {
 819                 /* store current schema so we can fall back in case of failure */
 820                 cur_schema = dsdb_get_schema(ldb, tmp_ctx);
 821                 used_global_schema = dsdb_uses_global_schema(ldb);
 822
 823                 ret = dsdb_reference_schema(ldb, working_schema, false);
 824                 if (ret != LDB_SUCCESS) {
 825                         DEBUG(0,(__location__ "Failed to reference working schema - %s\n",
 826                                  ldb_strerror(ret)));
 827                         /* TODO: Map LDB Error to NTSTATUS? */
 828                         ldb_transaction_cancel(ldb);
 829                         TALLOC_FREE(tmp_ctx);
 830                         return WERR_INTERNAL_ERROR;
 831                 }
 832         }
 833
 834         ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, objects, &ext_res);
 835         if (ret != LDB_SUCCESS) {
 836                 /* restore previous schema */
 837                 if (used_global_schema) {
 838                         dsdb_set_global_schema(ldb);
 839                 } else if (cur_schema) {
 840                         dsdb_reference_schema(ldb, cur_schema, false);
 841                 }
 842
 843                 DEBUG(0,("Failed to apply records: %s: %s\n",
 844                          ldb_errstring(ldb), ldb_strerror(ret)));
 845                 ldb_transaction_cancel(ldb);
 846                 TALLOC_FREE(tmp_ctx);
 847                 return WERR_FOOBAR;
 848         }
 849         talloc_free(ext_res);
 850
 851         /* Save our updated prefixMap */
 852         if (working_schema) {
 853                 werr = dsdb_write_prefixes_from_schema_to_ldb(working_schema,
 854                                                               ldb,
 855                                                               working_schema);
 856                 if (!W_ERROR_IS_OK(werr)) {
 857                         /* restore previous schema */
 858                         if (used_global_schema) {
 859                                 dsdb_set_global_schema(ldb);
 860                         } else if (cur_schema ) {
 861                                 dsdb_reference_schema(ldb, cur_schema, false);
 862                         }
 863                         DEBUG(0,("Failed to save updated prefixMap: %s\n",
 864                                  win_errstr(werr)));
 865                         TALLOC_FREE(tmp_ctx);
 866                         return werr;
 867                 }
 868         }
 869
 870         ret = ldb_transaction_prepare_commit(ldb);
 871         if (ret != LDB_SUCCESS) {
 872                 /* restore previous schema */
 873                 if (used_global_schema) {
 874                         dsdb_set_global_schema(ldb);
 875                 } else if (cur_schema ) {
 876                         dsdb_reference_schema(ldb, cur_schema, false);
 877                 }
 878                 DEBUG(0,(__location__ " Failed to prepare commit of transaction: %s\n",
 879                          ldb_errstring(ldb)));
 880                 TALLOC_FREE(tmp_ctx);
 881                 return WERR_FOOBAR;
 882         }
 883
 884         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num2, NULL);
 885         if (ret != LDB_SUCCESS) {
 886                 /* restore previous schema */
 887                 if (used_global_schema) {
 888                         dsdb_set_global_schema(ldb);
 889                 } else if (cur_schema ) {
 890                         dsdb_reference_schema(ldb, cur_schema, false);
 891                 }
 892                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 893                 ldb_transaction_cancel(ldb);
 894                 TALLOC_FREE(tmp_ctx);
 895                 return WERR_FOOBAR;
 896         }
 897
 898         ret = ldb_transaction_commit(ldb);
 899         if (ret != LDB_SUCCESS) {
 900                 /* restore previous schema */
 901                 if (used_global_schema) {
 902                         dsdb_set_global_schema(ldb);
 903                 } else if (cur_schema ) {
 904                         dsdb_reference_schema(ldb, cur_schema, false);
 905                 }
 906                 DEBUG(0,(__location__ " Failed to commit transaction\n"));
 907                 TALLOC_FREE(tmp_ctx);
 908                 return WERR_FOOBAR;
 909         }
 910
 911         /* if this replication partner didn't need to be notified
 912            before this transaction then it still doesn't need to be
 913            notified, as the changes came from this server */
 914         if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) {
 915                 *notify_uSN = seq_num2;
 916         }
 917
 918         /*
 919          * Reset the Schema used by ldb. This will lead to
 920          * a schema cache being refreshed from database.
 921          */
 922         if (working_schema) {
 923                 struct ldb_message *msg;
 924                 struct ldb_request *req;
 925
 926                 /* Force a reload */
 927                 working_schema->last_refresh = 0;
 928                 new_schema = dsdb_get_schema(ldb, tmp_ctx);
 929                 /* TODO:
 930                  * If dsdb_get_schema() fails, we just fall back
 931                  * to what we had.  However, the database is probably
 932                  * unable to operate for other users from this
 933                  * point... */
 934                 if (new_schema && used_global_schema) {
 935                         dsdb_make_schema_global(ldb, new_schema);
 936                 } else if (used_global_schema) {
 937                         DEBUG(0,("Failed to re-load schema after commit of transaction\n"));
 938                         dsdb_set_global_schema(ldb);
 939                         TALLOC_FREE(tmp_ctx);
 940                         return WERR_INTERNAL_ERROR;
 941                 } else {
 942                         DEBUG(0,("Failed to re-load schema after commit of transaction\n"));
 943                         dsdb_reference_schema(ldb, cur_schema, false);
 944                         TALLOC_FREE(tmp_ctx);
 945                         return WERR_INTERNAL_ERROR;
 946                 }
 947                 msg = ldb_msg_new(tmp_ctx);
 948                 if (msg == NULL) {
 949                         TALLOC_FREE(tmp_ctx);
 950                         return WERR_NOMEM;
 951                 }
 952                 msg->dn = ldb_dn_new(msg, ldb, "");
 953                 if (msg->dn == NULL) {
 954                         TALLOC_FREE(tmp_ctx);
 955                         return WERR_NOMEM;
 956                 }
 957
 958                 ret = ldb_msg_add_string(msg, "schemaUpdateNow", "1");
 959                 if (ret != LDB_SUCCESS) {
 960                         TALLOC_FREE(tmp_ctx);
 961                         return WERR_INTERNAL_ERROR;
 962                 }
 963
 964                 ret = ldb_build_mod_req(&req, ldb, objects,
 965                                 msg,
 966                                 NULL,
 967                                 NULL,
 968                                 ldb_op_default_callback,
 969                                 NULL);
 970
 971                 if (ret != LDB_SUCCESS) {
 972                         TALLOC_FREE(tmp_ctx);
 973                         return WERR_DS_DRA_INTERNAL_ERROR;
 974                 }
 975
 976                 ret = ldb_transaction_start(ldb);
 977                 if (ret != LDB_SUCCESS) {
 978                         TALLOC_FREE(tmp_ctx);
 979                         DEBUG(0, ("Autotransaction start failed\n"));
 980                         return WERR_DS_DRA_INTERNAL_ERROR;
 981                 }
 982
 983                 ret = ldb_request(ldb, req);
 984                 if (ret == LDB_SUCCESS) {
 985                         ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 986                 }
 987
 988                 if (ret == LDB_SUCCESS) {
 989                         ret = ldb_transaction_commit(ldb);
 990                 } else {
 991                         DEBUG(0, ("Schema update now failed: %s\n",
 992                                   ldb_errstring(ldb)));
 993                         ldb_transaction_cancel(ldb);
 994                 }
 995
 996                 if (ret != LDB_SUCCESS) {
 997                         DEBUG(0, ("Commit failed: %s\n", ldb_errstring(ldb)));
 998                         TALLOC_FREE(tmp_ctx);
 999                         return WERR_DS_INTERNAL_FAILURE;
1000                 }
1001         }
1002
1003         DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n",
1004                  objects->num_objects, objects->linked_attributes_count,
1005                  ldb_dn_get_linearized(objects->partition_dn)));
1006
1007         TALLOC_FREE(tmp_ctx);
1008         return WERR_OK;
1009 }
1010
1011 static WERROR dsdb_origin_object_convert(struct ldb_context *ldb,
1012                                          const struct dsdb_schema *schema,
1013                                          const struct drsuapi_DsReplicaObjectListItem *in,
1014                                          TALLOC_CTX *mem_ctx,
1015                                          struct ldb_message **_msg)
1016 {
1017         WERROR status;
1018         unsigned int i;
1019         struct ldb_message *msg;
1020
1021         if (!in->object.identifier) {
1022                 return WERR_FOOBAR;
1023         }
1024
1025         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
1026                 return WERR_FOOBAR;
1027         }
1028
1029         msg = ldb_msg_new(mem_ctx);
1030         W_ERROR_HAVE_NO_MEMORY(msg);
1031
1032         msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
1033         W_ERROR_HAVE_NO_MEMORY(msg->dn);
1034
1035         msg->num_elements       = in->object.attribute_ctr.num_attributes;
1036         msg->elements           = talloc_array(msg, struct ldb_message_element,
1037                                                msg->num_elements);
1038         W_ERROR_HAVE_NO_MEMORY(msg->elements);
1039
1040         for (i=0; i < msg->num_elements; i++) {
1041                 struct drsuapi_DsReplicaAttribute *a;
1042                 struct ldb_message_element *e;
1043
1044                 a = &in->object.attribute_ctr.attributes[i];
1045                 e = &msg->elements[i];
1046
1047                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, schema->prefixmap,
1048                                                        a, msg->elements, e, NULL);
1049                 W_ERROR_NOT_OK_RETURN(status);
1050         }
1051
1052
1053         *_msg = msg;
1054
1055         return WERR_OK;
1056 }
1057
1058 WERROR dsdb_origin_objects_commit(struct ldb_context *ldb,
1059                                   TALLOC_CTX *mem_ctx,
1060                                   const struct drsuapi_DsReplicaObjectListItem *first_object,
1061                                   uint32_t *_num,
1062                                   uint32_t dsdb_repl_flags,
1063                                   struct drsuapi_DsReplicaObjectIdentifier2 **_ids)
1064 {
1065         WERROR status;
1066         const struct dsdb_schema *schema;
1067         const struct drsuapi_DsReplicaObjectListItem *cur;
1068         struct ldb_message **objects;
1069         struct drsuapi_DsReplicaObjectIdentifier2 *ids;
1070         uint32_t i;
1071         uint32_t num_objects = 0;
1072         const char * const attrs[] = {
1073                 "objectGUID",
1074                 "objectSid",
1075                 NULL
1076         };
1077         struct ldb_result *res;
1078         int ret;
1079
1080         for (cur = first_object; cur; cur = cur->next_object) {
1081                 num_objects++;
1082         }
1083
1084         if (num_objects == 0) {
1085                 return WERR_OK;
1086         }
1087
1088         ret = ldb_transaction_start(ldb);
1089         if (ret != LDB_SUCCESS) {
1090                 return WERR_DS_INTERNAL_FAILURE;
1091         }
1092
1093         objects = talloc_array(mem_ctx, struct ldb_message *,
1094                                num_objects);
1095         if (objects == NULL) {
1096                 status = WERR_NOMEM;
1097                 goto cancel;
1098         }
1099
1100         schema = dsdb_get_schema(ldb, objects);
1101         if (!schema) {
1102                 return WERR_DS_SCHEMA_NOT_LOADED;
1103         }
1104
1105         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
1106                 status = dsdb_origin_object_convert(ldb, schema, cur,
1107                                                     objects, &objects[i]);
1108                 if (!W_ERROR_IS_OK(status)) {
1109                         goto cancel;
1110                 }
1111         }
1112
1113         ids = talloc_array(mem_ctx,
1114                            struct drsuapi_DsReplicaObjectIdentifier2,
1115                            num_objects);
1116         if (ids == NULL) {
1117                 status = WERR_NOMEM;
1118                 goto cancel;
1119         }
1120
1121         if (dsdb_repl_flags & DSDB_REPL_FLAG_ADD_NCNAME) {
1122                 /* check for possible NC creation */
1123                 for (i=0; i < num_objects; i++) {
1124                         struct ldb_message *msg = objects[i];
1125                         struct ldb_message_element *el;
1126                         struct ldb_dn *nc_dn;
1127
1128                         if (ldb_msg_check_string_attribute(msg, "objectClass", "crossRef") == 0) {
1129                                 continue;
1130                         }
1131                         el = ldb_msg_find_element(msg, "nCName");
1132                         if (el == NULL || el->num_values != 1) {
1133                                 continue;
1134                         }
1135                         nc_dn = ldb_dn_from_ldb_val(objects, ldb, &el->values[0]);
1136                         if (!ldb_dn_validate(nc_dn)) {
1137                                 continue;
1138                         }
1139                         ret = dsdb_create_partial_replica_NC(ldb, nc_dn);
1140                         if (ret != LDB_SUCCESS) {
1141                                 status = WERR_DS_INTERNAL_FAILURE;
1142                                 goto cancel;
1143                         }
1144                 }
1145         }
1146
1147         for (i=0; i < num_objects; i++) {
1148                 struct dom_sid *sid = NULL;
1149                 struct ldb_request *add_req;
1150
1151                 DEBUG(6,(__location__ ": adding %s\n",
1152                          ldb_dn_get_linearized(objects[i]->dn)));
1153
1154                 ret = ldb_build_add_req(&add_req,
1155                                         ldb,
1156                                         objects,
1157                                         objects[i],
1158                                         NULL,
1159                                         NULL,
1160                                         ldb_op_default_callback,
1161                                         NULL);
1162                 if (ret != LDB_SUCCESS) {
1163                         status = WERR_DS_INTERNAL_FAILURE;
1164                         goto cancel;
1165                 }
1166
1167                 ret = ldb_request_add_control(add_req, LDB_CONTROL_RELAX_OID, true, NULL);
1168                 if (ret != LDB_SUCCESS) {
1169                         status = WERR_DS_INTERNAL_FAILURE;
1170                         goto cancel;
1171                 }
1172
1173                 ret = ldb_request(ldb, add_req);
1174                 if (ret == LDB_SUCCESS) {
1175                         ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
1176                 }
1177                 if (ret != LDB_SUCCESS) {
1178                         DEBUG(0,(__location__ ": Failed add of %s - %s\n",
1179                                  ldb_dn_get_linearized(objects[i]->dn), ldb_errstring(ldb)));
1180                         status = WERR_DS_INTERNAL_FAILURE;
1181                         goto cancel;
1182                 }
1183
1184                 talloc_free(add_req);
1185
1186                 ret = ldb_search(ldb, objects, &res, objects[i]->dn,
1187                                  LDB_SCOPE_BASE, attrs,
1188                                  "(objectClass=*)");
1189                 if (ret != LDB_SUCCESS) {
1190                         status = WERR_DS_INTERNAL_FAILURE;
1191                         goto cancel;
1192                 }
1193                 ids[i].guid = samdb_result_guid(res->msgs[0], "objectGUID");
1194                 sid = samdb_result_dom_sid(objects, res->msgs[0], "objectSid");
1195                 if (sid) {
1196                         ids[i].sid = *sid;
1197                 } else {
1198                         ZERO_STRUCT(ids[i].sid);
1199                 }
1200         }
1201
1202         ret = ldb_transaction_commit(ldb);
1203         if (ret != LDB_SUCCESS) {
1204                 return WERR_DS_INTERNAL_FAILURE;
1205         }
1206
1207         talloc_free(objects);
1208
1209         *_num = num_objects;
1210         *_ids = ids;
1211         return WERR_OK;
1212
1213 cancel:
1214         talloc_free(objects);
1215         ldb_transaction_cancel(ldb);
1216         return status;
1217 }