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 /**
  35  * Multi-pass working schema creation
  36  * Function will:
  37  *  - shallow copy initial schema supplied
  38  *  - create a working schema in multiple passes
  39  *    until all objects are resolved
  40  * Working schema is a schema with Attributes, Classes
  41  * and indexes, but w/o subClassOf, possibleSupperiors etc.
  42  * It is to be used just us cache for converting attribute values.
  43  */
  44 WERROR dsdb_repl_make_working_schema(struct ldb_context *ldb,
  45                                      const struct dsdb_schema *initial_schema,
  46                                      const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
  47                                      uint32_t object_count,
  48                                      const struct drsuapi_DsReplicaObjectListItemEx *first_object,
  49                                      const DATA_BLOB *gensec_skey,
  50                                      TALLOC_CTX *mem_ctx,
  51                                      struct dsdb_schema **_schema_out)
  52 {
  53         struct schema_list {
  54                 struct schema_list *next, *prev;
  55                 const struct drsuapi_DsReplicaObjectListItemEx *obj;
  56         };
  57
  58         WERROR werr;
  59         struct dsdb_schema_prefixmap *pfm_remote;
  60         struct schema_list *schema_list = NULL, *schema_list_item, *schema_list_next_item;
  61         struct dsdb_schema *working_schema;
  62         const struct drsuapi_DsReplicaObjectListItemEx *cur;
  63         int ret, pass_no;
  64
  65         /* make a copy of the iniatial_scheam so we don't mess with it */
  66         working_schema = dsdb_schema_copy_shallow(mem_ctx, ldb, initial_schema);
  67         if (!working_schema) {
  68                 DEBUG(0,(__location__ ": schema copy failed!\n"));
  69                 return WERR_NOMEM;
  70         }
  71
  72         /* we are going to need remote prefixMap for decoding */
  73         werr = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
  74                                                 mem_ctx, &pfm_remote, NULL);
  75         if (!W_ERROR_IS_OK(werr)) {
  76                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
  77                          win_errstr(werr)));
  78                 return werr;
  79         }
  80
  81         /* create a list of objects yet to be converted */
  82         for (cur = first_object; cur; cur = cur->next_object) {
  83                 schema_list_item = talloc(mem_ctx, struct schema_list);
  84                 schema_list_item->obj = cur;
  85                 DLIST_ADD_END(schema_list, schema_list_item, struct schema_list);
  86         }
  87
  88         /* resolve objects until all are resolved and in local schema */
  89         pass_no = 1;
  90
  91         while (schema_list) {
  92                 uint32_t converted_obj_count = 0;
  93                 uint32_t failed_obj_count = 0;
  94                 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
  95                 W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
  96
  97                 for (schema_list_item = schema_list; schema_list_item; schema_list_item=schema_list_next_item) {
  98                         struct dsdb_extended_replicated_object object;
  99
 100                         cur = schema_list_item->obj;
 101
 102                         /* Save the next item, now we have saved out
 103                          * the current one, so we can DLIST_REMOVE it
 104                          * safely */
 105                         schema_list_next_item = schema_list_item->next;
 106
 107                         /*
 108                          * Convert the objects into LDB messages using the
 109                          * schema we have so far. It's ok if we fail to convert
 110                          * an object. We should convert more objects on next pass.
 111                          */
 112                         werr = dsdb_convert_object_ex(ldb, working_schema, pfm_remote,
 113                                                       cur, gensec_skey,
 114                                                       tmp_ctx, &object);
 115                         if (!W_ERROR_IS_OK(werr)) {
 116                                 DEBUG(1,("Warning: Failed to convert schema object %s into ldb msg\n",
 117                                          cur->object.identifier->dn));
 118
 119                                 failed_obj_count++;
 120                         } else {
 121                                 /*
 122                                  * Convert the schema from ldb_message format
 123                                  * (OIDs as OID strings) into schema, using
 124                                  * the remote prefixMap
 125                                  */
 126                                 werr = dsdb_schema_set_el_from_ldb_msg(ldb,
 127                                                                        working_schema,
 128                                                                        object.msg);
 129                                 if (!W_ERROR_IS_OK(werr)) {
 130                                         DEBUG(1,("Warning: failed to convert object %s into a schema element: %s\n",
 131                                                  ldb_dn_get_linearized(object.msg->dn),
 132                                                  win_errstr(werr)));
 133                                         failed_obj_count++;
 134                                 } else {
 135                                         DLIST_REMOVE(schema_list, schema_list_item);
 136                                         talloc_free(schema_list_item);
 137                                         converted_obj_count++;
 138                                 }
 139                         }
 140                 }
 141                 talloc_free(tmp_ctx);
 142
 143                 DEBUG(4,("Schema load pass %d: %d/%d of %d objects left to be converted.\n",
 144                          pass_no, failed_obj_count, converted_obj_count, object_count));
 145                 pass_no++;
 146
 147                 /* check if we converted any objects in this pass */
 148                 if (converted_obj_count == 0) {
 149                         DEBUG(0,("Can't continue Schema load: didn't manage to convert any objects: all %d remaining of %d objects failed to convert\n", failed_obj_count, object_count));
 150                         return WERR_INTERNAL_ERROR;
 151                 }
 152
 153                 /* rebuild indexes */
 154                 ret = dsdb_setup_sorted_accessors(ldb, working_schema);
 155                 if (LDB_SUCCESS != ret) {
 156                         DEBUG(0,("Failed to create schema-cache indexes!\n"));
 157                         return WERR_INTERNAL_ERROR;
 158                 }
 159         };
 160
 161         *_schema_out = working_schema;
 162
 163         return WERR_OK;
 164 }
 165
 166 static bool dsdb_attid_in_list(const uint32_t attid_list[], uint32_t attid)
 167 {
 168         const uint32_t *cur;
 169         if (!attid_list) {
 170                 return false;
 171         }
 172         for (cur = attid_list; *cur != DRSUAPI_ATTID_INVALID; cur++) {
 173                 if (*cur == attid) {
 174                         return true;
 175                 }
 176         }
 177         return false;
 178 }
 179
 180 WERROR dsdb_convert_object_ex(struct ldb_context *ldb,
 181                               const struct dsdb_schema *schema,
 182                               const struct dsdb_schema_prefixmap *pfm_remote,
 183                               const struct drsuapi_DsReplicaObjectListItemEx *in,
 184                               const DATA_BLOB *gensec_skey,
 185                               const uint32_t *ignore_attids,
 186                               TALLOC_CTX *mem_ctx,
 187                               struct dsdb_extended_replicated_object *out)
 188 {
 189         NTSTATUS nt_status;
 190         WERROR status;
 191         uint32_t i;
 192         struct ldb_message *msg;
 193         struct replPropertyMetaDataBlob *md;
 194         struct ldb_val guid_value;
 195         NTTIME whenChanged = 0;
 196         time_t whenChanged_t;
 197         const char *whenChanged_s;
 198         const char *rdn_name = NULL;
 199         const struct ldb_val *rdn_value = NULL;
 200         const struct dsdb_attribute *rdn_attr = NULL;
 201         uint32_t rdn_attid;
 202         struct drsuapi_DsReplicaAttribute *name_a = NULL;
 203         struct drsuapi_DsReplicaMetaData *name_d = NULL;
 204         struct replPropertyMetaData1 *rdn_m = NULL;
 205         struct dom_sid *sid = NULL;
 206         uint32_t rid = 0;
 207         uint32_t attr_count;
 208         int ret;
 209
 210         if (!in->object.identifier) {
 211                 return WERR_FOOBAR;
 212         }
 213
 214         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 215                 return WERR_FOOBAR;
 216         }
 217
 218         if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
 219                 return WERR_FOOBAR;
 220         }
 221
 222         if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
 223                 return WERR_FOOBAR;
 224         }
 225
 226         sid = &in->object.identifier->sid;
 227         if (sid->num_auths > 0) {
 228                 rid = sid->sub_auths[sid->num_auths - 1];
 229         }
 230
 231         msg = ldb_msg_new(mem_ctx);
 232         W_ERROR_HAVE_NO_MEMORY(msg);
 233
 234         msg->dn                 = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 235         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 236
 237         rdn_name        = ldb_dn_get_rdn_name(msg->dn);
 238         rdn_attr        = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
 239         if (!rdn_attr) {
 240                 return WERR_FOOBAR;
 241         }
 242         rdn_attid       = rdn_attr->attributeID_id;
 243         rdn_value       = ldb_dn_get_rdn_val(msg->dn);
 244
 245         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 246         msg->elements           = talloc_array(msg, struct ldb_message_element,
 247                                                msg->num_elements);
 248         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 249
 250         md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
 251         W_ERROR_HAVE_NO_MEMORY(md);
 252
 253         md->version             = 1;
 254         md->reserved            = 0;
 255         md->ctr.ctr1.count      = in->meta_data_ctr->count;
 256         md->ctr.ctr1.reserved   = 0;
 257         md->ctr.ctr1.array      = talloc_array(mem_ctx,
 258                                                struct replPropertyMetaData1,
 259                                                md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
 260         W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
 261
 262         for (i=0, attr_count=0; i < in->meta_data_ctr->count; i++, attr_count++) {
 263                 struct drsuapi_DsReplicaAttribute *a;
 264                 struct drsuapi_DsReplicaMetaData *d;
 265                 struct replPropertyMetaData1 *m;
 266                 struct ldb_message_element *e;
 267                 uint32_t j;
 268
 269                 a = &in->object.attribute_ctr.attributes[i];
 270                 d = &in->meta_data_ctr->meta_data[i];
 271                 m = &md->ctr.ctr1.array[attr_count];
 272                 e = &msg->elements[attr_count];
 273
 274                 if (dsdb_attid_in_list(ignore_attids, a->attid)) {
 275                         attr_count--;
 276                         continue;
 277                 }
 278
 279                 for (j=0; j<a->value_ctr.num_values; j++) {
 280                         status = drsuapi_decrypt_attribute(a->value_ctr.values[j].blob, gensec_skey, rid, a);
 281                         W_ERROR_NOT_OK_RETURN(status);
 282                 }
 283
 284                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
 285                                                        a, msg->elements, e);
 286                 W_ERROR_NOT_OK_RETURN(status);
 287
 288                 m->attid                        = a->attid;
 289                 m->version                      = d->version;
 290                 m->originating_change_time      = d->originating_change_time;
 291                 m->originating_invocation_id    = d->originating_invocation_id;
 292                 m->originating_usn              = d->originating_usn;
 293                 m->local_usn                    = 0;
 294
 295                 if (d->originating_change_time > whenChanged) {
 296                         whenChanged = d->originating_change_time;
 297                 }
 298
 299                 if (a->attid == DRSUAPI_ATTID_name) {
 300                         name_a = a;
 301                         name_d = d;
 302                 }
 303         }
 304
 305         msg->num_elements = attr_count;
 306         md->ctr.ctr1.count = attr_count;
 307         if (name_a) {
 308                 rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
 309         }
 310
 311         if (rdn_m) {
 312                 struct ldb_message_element *el;
 313                 el = ldb_msg_find_element(msg, rdn_attr->lDAPDisplayName);
 314                 if (!el) {
 315                         ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
 316                         if (ret != LDB_SUCCESS) {
 317                                 return WERR_FOOBAR;
 318                         }
 319                 } else {
 320                         if (el->num_values != 1) {
 321                                 DEBUG(0,(__location__ ": Unexpected num_values=%u\n",
 322                                          el->num_values));
 323                                 return WERR_FOOBAR;
 324                         }
 325                         if (!ldb_val_equal_exact(&el->values[0], rdn_value)) {
 326                                 DEBUG(0,(__location__ ": RDN value changed? '%*.*s' '%*.*s'\n",
 327                                          (int)el->values[0].length, (int)el->values[0].length, el->values[0].data,
 328                                          (int)rdn_value->length, (int)rdn_value->length, rdn_value->data));
 329                                 return WERR_FOOBAR;
 330                         }
 331                 }
 332
 333                 rdn_m->attid                            = rdn_attid;
 334                 rdn_m->version                          = name_d->version;
 335                 rdn_m->originating_change_time          = name_d->originating_change_time;
 336                 rdn_m->originating_invocation_id        = name_d->originating_invocation_id;
 337                 rdn_m->originating_usn                  = name_d->originating_usn;
 338                 rdn_m->local_usn                        = 0;
 339                 md->ctr.ctr1.count++;
 340
 341         }
 342
 343         whenChanged_t = nt_time_to_unix(whenChanged);
 344         whenChanged_s = ldb_timestring(msg, whenChanged_t);
 345         W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
 346
 347         nt_status = GUID_to_ndr_blob(&in->object.identifier->guid, msg, &guid_value);
 348         if (!NT_STATUS_IS_OK(nt_status)) {
 349                 return ntstatus_to_werror(nt_status);
 350         }
 351
 352         out->msg                = msg;
 353         out->guid_value         = guid_value;
 354         out->when_changed       = whenChanged_s;
 355         out->meta_data          = md;
 356         return WERR_OK;
 357 }
 358
 359 WERROR dsdb_replicated_objects_convert(struct ldb_context *ldb,
 360                                        const struct dsdb_schema *schema,
 361                                        const char *partition_dn_str,
 362                                        const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 363                                        uint32_t object_count,
 364                                        const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 365                                        uint32_t linked_attributes_count,
 366                                        const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
 367                                        const struct repsFromTo1 *source_dsa,
 368                                        const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
 369                                        const DATA_BLOB *gensec_skey,
 370                                        TALLOC_CTX *mem_ctx,
 371                                        struct dsdb_extended_replicated_objects **objects)
 372 {
 373         WERROR status;
 374         struct ldb_dn *partition_dn;
 375         struct dsdb_schema_prefixmap *pfm_remote;
 376         struct dsdb_extended_replicated_objects *out;
 377         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 378         uint32_t i;
 379
 380         out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
 381         W_ERROR_HAVE_NO_MEMORY(out);
 382         out->version            = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
 383
 384         /*
 385          * Ensure schema is kept valid for as long as 'out'
 386          * which may contain pointers to it
 387          */
 388         schema = talloc_reference(out, schema);
 389         W_ERROR_HAVE_NO_MEMORY(schema);
 390
 391         partition_dn = ldb_dn_new(out, ldb, partition_dn_str);
 392         W_ERROR_HAVE_NO_MEMORY_AND_FREE(partition_dn, out);
 393
 394         status = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
 395                                                   out, &pfm_remote, NULL);
 396         if (!W_ERROR_IS_OK(status)) {
 397                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
 398                          win_errstr(status)));
 399                 talloc_free(out);
 400                 return status;
 401         }
 402
 403         if (ldb_dn_compare(partition_dn, ldb_get_schema_basedn(ldb)) != 0) {
 404                 /*
 405                  * check for schema changes in case
 406                  * we are not replicating Schema NC
 407                  */
 408                 status = dsdb_schema_info_cmp(schema, mapping_ctr);
 409                 if (!W_ERROR_IS_OK(status)) {
 410                         DEBUG(1,("Remote schema has changed while replicating %s\n",
 411                                  partition_dn_str));
 412                         talloc_free(out);
 413                         return status;
 414                 }
 415         }
 416
 417         out->partition_dn       = partition_dn;
 418
 419         out->source_dsa         = source_dsa;
 420         out->uptodateness_vector= uptodateness_vector;
 421
 422         out->num_objects        = object_count;
 423         out->objects            = talloc_array(out,
 424                                                struct dsdb_extended_replicated_object,
 425                                                out->num_objects);
 426         W_ERROR_HAVE_NO_MEMORY_AND_FREE(out->objects, out);
 427
 428         /* pass the linked attributes down to the repl_meta_data
 429            module */
 430         out->linked_attributes_count = linked_attributes_count;
 431         out->linked_attributes       = linked_attributes;
 432
 433         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 434                 if (i == out->num_objects) {
 435                         talloc_free(out);
 436                         return WERR_FOOBAR;
 437                 }
 438
 439                 status = dsdb_convert_object_ex(ldb, schema, pfm_remote,
 440                                                 cur, gensec_skey,
 441                                                 NULL,
 442                                                 out->objects, &out->objects[i]);
 443                 if (!W_ERROR_IS_OK(status)) {
 444                         talloc_free(out);
 445                         DEBUG(0,("Failed to convert object %s: %s\n",
 446                                  cur->object.identifier->dn,
 447                                  win_errstr(status)));
 448                         return status;
 449                 }
 450         }
 451         if (i != out->num_objects) {
 452                 talloc_free(out);
 453                 return WERR_FOOBAR;
 454         }
 455
 456         /* free pfm_remote, we won't need it anymore */
 457         talloc_free(pfm_remote);
 458
 459         *objects = out;
 460         return WERR_OK;
 461 }
 462
 463 /**
 464  * Commits a list of replicated objects.
 465  *
 466  * @param working_schema dsdb_schema to be used for resolving
 467  *                       Classes/Attributes during Schema replication. If not NULL,
 468  *                       it will be set on ldb and used while committing replicated objects
 469  */
 470 WERROR dsdb_replicated_objects_commit(struct ldb_context *ldb,
 471                                       struct dsdb_schema *working_schema,
 472                                       struct dsdb_extended_replicated_objects *objects,
 473                                       uint64_t *notify_uSN)
 474 {
 475         WERROR werr;
 476         struct ldb_result *ext_res;
 477         struct dsdb_schema *cur_schema = NULL;
 478         int ret;
 479         uint64_t seq_num1, seq_num2;
 480
 481         /* TODO: handle linked attributes */
 482
 483         /* wrap the extended operation in a transaction
 484            See [MS-DRSR] 3.3.2 Transactions
 485          */
 486         ret = ldb_transaction_start(ldb);
 487         if (ret != LDB_SUCCESS) {
 488                 DEBUG(0,(__location__ " Failed to start transaction\n"));
 489                 return WERR_FOOBAR;
 490         }
 491
 492         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num1, NULL);
 493         if (ret != LDB_SUCCESS) {
 494                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 495                 ldb_transaction_cancel(ldb);
 496                 return WERR_FOOBAR;
 497         }
 498
 499         /*
 500          * Set working_schema for ldb in case we are replicating from Schema NC.
 501          * Schema won't be reloaded during Replicated Objects commit, as it is
 502          * done in a transaction. So we need some way to search for newly
 503          * added Classes and Attributes
 504          */
 505         if (working_schema) {
 506                 /* store current schema so we can fall back in case of failure */
 507                 cur_schema = dsdb_get_schema(ldb, working_schema);
 508
 509                 ret = dsdb_reference_schema(ldb, working_schema, false);
 510                 if (ret != LDB_SUCCESS) {
 511                         DEBUG(0,(__location__ "Failed to reference working schema - %s\n",
 512                                  ldb_strerror(ret)));
 513                         /* TODO: Map LDB Error to NTSTATUS? */
 514                         ldb_transaction_cancel(ldb);
 515                         return WERR_INTERNAL_ERROR;
 516                 }
 517         }
 518
 519         ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, objects, &ext_res);
 520         if (ret != LDB_SUCCESS) {
 521                 /* restore previous schema */
 522                 if (cur_schema ) {
 523                         dsdb_reference_schema(ldb, cur_schema, false);
 524                         dsdb_make_schema_global(ldb, cur_schema);
 525                 }
 526
 527                 DEBUG(0,("Failed to apply records: %s: %s\n",
 528                          ldb_errstring(ldb), ldb_strerror(ret)));
 529                 ldb_transaction_cancel(ldb);
 530                 return WERR_FOOBAR;
 531         }
 532         talloc_free(ext_res);
 533
 534         /* Save our updated prefixMap */
 535         if (working_schema) {
 536                 werr = dsdb_write_prefixes_from_schema_to_ldb(working_schema,
 537                                                               ldb,
 538                                                               working_schema);
 539                 if (!W_ERROR_IS_OK(werr)) {
 540                         /* restore previous schema */
 541                         if (cur_schema ) {
 542                                 dsdb_reference_schema(ldb, cur_schema, false);
 543                                 dsdb_make_schema_global(ldb, cur_schema);
 544                         }
 545                         DEBUG(0,("Failed to save updated prefixMap: %s\n",
 546                                  win_errstr(werr)));
 547                         return werr;
 548                 }
 549         }
 550
 551         ret = ldb_transaction_prepare_commit(ldb);
 552         if (ret != LDB_SUCCESS) {
 553                 /* restore previous schema */
 554                 if (cur_schema ) {
 555                         dsdb_reference_schema(ldb, cur_schema, false);
 556                         dsdb_make_schema_global(ldb, cur_schema);
 557                 }
 558                 DEBUG(0,(__location__ " Failed to prepare commit of transaction: %s\n",
 559                          ldb_errstring(ldb)));
 560                 return WERR_FOOBAR;
 561         }
 562
 563         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num2, NULL);
 564         if (ret != LDB_SUCCESS) {
 565                 /* restore previous schema */
 566                 if (cur_schema ) {
 567                         dsdb_reference_schema(ldb, cur_schema, false);
 568                         dsdb_make_schema_global(ldb, cur_schema);
 569                 }
 570                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 571                 ldb_transaction_cancel(ldb);
 572                 return WERR_FOOBAR;
 573         }
 574
 575         /* if this replication partner didn't need to be notified
 576            before this transaction then it still doesn't need to be
 577            notified, as the changes came from this server */
 578         if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) {
 579                 *notify_uSN = seq_num2;
 580         }
 581
 582         ret = ldb_transaction_commit(ldb);
 583         if (ret != LDB_SUCCESS) {
 584                 /* restore previous schema */
 585                 if (cur_schema ) {
 586                         dsdb_reference_schema(ldb, cur_schema, false);
 587                         dsdb_make_schema_global(ldb, cur_schema);
 588                 }
 589                 DEBUG(0,(__location__ " Failed to commit transaction\n"));
 590                 return WERR_FOOBAR;
 591         }
 592
 593         /*
 594          * Reset the Schema used by ldb. This will lead to
 595          * a schema cache being refreshed from database.
 596          */
 597         if (working_schema) {
 598                 cur_schema = dsdb_get_schema(ldb, NULL);
 599                 /* TODO: What we do in case dsdb_get_schema() fail?
 600                  *       We can't fallback at this point anymore */
 601                 if (cur_schema) {
 602                         dsdb_make_schema_global(ldb, cur_schema);
 603                 }
 604         }
 605
 606         DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n",
 607                  objects->num_objects, objects->linked_attributes_count,
 608                  ldb_dn_get_linearized(objects->partition_dn)));
 609
 610         return WERR_OK;
 611 }
 612
 613 static WERROR dsdb_origin_object_convert(struct ldb_context *ldb,
 614                                          const struct dsdb_schema *schema,
 615                                          const struct drsuapi_DsReplicaObjectListItem *in,
 616                                          TALLOC_CTX *mem_ctx,
 617                                          struct ldb_message **_msg)
 618 {
 619         WERROR status;
 620         unsigned int i;
 621         struct ldb_message *msg;
 622
 623         if (!in->object.identifier) {
 624                 return WERR_FOOBAR;
 625         }
 626
 627         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 628                 return WERR_FOOBAR;
 629         }
 630
 631         msg = ldb_msg_new(mem_ctx);
 632         W_ERROR_HAVE_NO_MEMORY(msg);
 633
 634         msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 635         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 636
 637         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 638         msg->elements           = talloc_array(msg, struct ldb_message_element,
 639                                                msg->num_elements);
 640         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 641
 642         for (i=0; i < msg->num_elements; i++) {
 643                 struct drsuapi_DsReplicaAttribute *a;
 644                 struct ldb_message_element *e;
 645
 646                 a = &in->object.attribute_ctr.attributes[i];
 647                 e = &msg->elements[i];
 648
 649                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, schema->prefixmap,
 650                                                        a, msg->elements, e);
 651                 W_ERROR_NOT_OK_RETURN(status);
 652         }
 653
 654
 655         *_msg = msg;
 656
 657         return WERR_OK;
 658 }
 659
 660 WERROR dsdb_origin_objects_commit(struct ldb_context *ldb,
 661                                   TALLOC_CTX *mem_ctx,
 662                                   const struct drsuapi_DsReplicaObjectListItem *first_object,
 663                                   uint32_t *_num,
 664                                   struct drsuapi_DsReplicaObjectIdentifier2 **_ids)
 665 {
 666         WERROR status;
 667         const struct dsdb_schema *schema;
 668         const struct drsuapi_DsReplicaObjectListItem *cur;
 669         struct ldb_message **objects;
 670         struct drsuapi_DsReplicaObjectIdentifier2 *ids;
 671         uint32_t i;
 672         uint32_t num_objects = 0;
 673         const char * const attrs[] = {
 674                 "objectGUID",
 675                 "objectSid",
 676                 NULL
 677         };
 678         struct ldb_result *res;
 679         int ret;
 680
 681         for (cur = first_object; cur; cur = cur->next_object) {
 682                 num_objects++;
 683         }
 684
 685         if (num_objects == 0) {
 686                 return WERR_OK;
 687         }
 688
 689         ret = ldb_transaction_start(ldb);
 690         if (ret != LDB_SUCCESS) {
 691                 return WERR_DS_INTERNAL_FAILURE;
 692         }
 693
 694         objects = talloc_array(mem_ctx, struct ldb_message *,
 695                                num_objects);
 696         if (objects == NULL) {
 697                 status = WERR_NOMEM;
 698                 goto cancel;
 699         }
 700
 701         schema = dsdb_get_schema(ldb, objects);
 702         if (!schema) {
 703                 return WERR_DS_SCHEMA_NOT_LOADED;
 704         }
 705
 706         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 707                 status = dsdb_origin_object_convert(ldb, schema, cur,
 708                                                     objects, &objects[i]);
 709                 if (!W_ERROR_IS_OK(status)) {
 710                         goto cancel;
 711                 }
 712         }
 713
 714         ids = talloc_array(mem_ctx,
 715                            struct drsuapi_DsReplicaObjectIdentifier2,
 716                            num_objects);
 717         if (ids == NULL) {
 718                 status = WERR_NOMEM;
 719                 goto cancel;
 720         }
 721
 722         for (i=0; i < num_objects; i++) {
 723                 struct dom_sid *sid = NULL;
 724                 struct ldb_request *add_req;
 725
 726                 DEBUG(6,(__location__ ": adding %s\n",
 727                          ldb_dn_get_linearized(objects[i]->dn)));
 728
 729                 ret = ldb_build_add_req(&add_req,
 730                                         ldb,
 731                                         objects,
 732                                         objects[i],
 733                                         NULL,
 734                                         NULL,
 735                                         ldb_op_default_callback,
 736                                         NULL);
 737                 if (ret != LDB_SUCCESS) {
 738                         status = WERR_DS_INTERNAL_FAILURE;
 739                         goto cancel;
 740                 }
 741
 742                 ret = ldb_request_add_control(add_req, LDB_CONTROL_RELAX_OID, true, NULL);
 743                 if (ret != LDB_SUCCESS) {
 744                         status = WERR_DS_INTERNAL_FAILURE;
 745                         goto cancel;
 746                 }
 747
 748                 ret = ldb_request(ldb, add_req);
 749                 if (ret == LDB_SUCCESS) {
 750                         ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
 751                 }
 752                 if (ret != LDB_SUCCESS) {
 753                         DEBUG(0,(__location__ ": Failed add of %s - %s\n",
 754                                  ldb_dn_get_linearized(objects[i]->dn), ldb_errstring(ldb)));
 755                         status = WERR_DS_INTERNAL_FAILURE;
 756                         goto cancel;
 757                 }
 758
 759                 talloc_free(add_req);
 760
 761                 ret = ldb_search(ldb, objects, &res, objects[i]->dn,
 762                                  LDB_SCOPE_BASE, attrs,
 763                                  "(objectClass=*)");
 764                 if (ret != LDB_SUCCESS) {
 765                         status = WERR_DS_INTERNAL_FAILURE;
 766                         goto cancel;
 767                 }
 768                 ids[i].guid = samdb_result_guid(res->msgs[0], "objectGUID");
 769                 sid = samdb_result_dom_sid(objects, res->msgs[0], "objectSid");
 770                 if (sid) {
 771                         ids[i].sid = *sid;
 772                 } else {
 773                         ZERO_STRUCT(ids[i].sid);
 774                 }
 775         }
 776
 777         ret = ldb_transaction_commit(ldb);
 778         if (ret != LDB_SUCCESS) {
 779                 return WERR_DS_INTERNAL_FAILURE;
 780         }
 781
 782         talloc_free(objects);
 783
 784         *_num = num_objects;
 785         *_ids = ids;
 786         return WERR_OK;
 787
 788 cancel:
 789         talloc_free(objects);
 790         ldb_transaction_cancel(ldb);
 791         return status;
 792 }