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         uint32_t ignore_attids[] = {
  65                         DRSUAPI_ATTID_auxiliaryClass,
  66                         DRSUAPI_ATTID_mayContain,
  67                         DRSUAPI_ATTID_mustContain,
  68                         DRSUAPI_ATTID_possSuperiors,
  69                         DRSUAPI_ATTID_systemPossSuperiors,
  70                         DRSUAPI_ATTID_INVALID
  71         };
  72
  73         /* make a copy of the iniatial_scheam so we don't mess with it */
  74         working_schema = dsdb_schema_copy_shallow(mem_ctx, ldb, initial_schema);
  75         if (!working_schema) {
  76                 DEBUG(0,(__location__ ": schema copy failed!\n"));
  77                 return WERR_NOMEM;
  78         }
  79
  80         /* we are going to need remote prefixMap for decoding */
  81         werr = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
  82                                                 mem_ctx, &pfm_remote, NULL);
  83         if (!W_ERROR_IS_OK(werr)) {
  84                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
  85                          win_errstr(werr)));
  86                 return werr;
  87         }
  88
  89         /* create a list of objects yet to be converted */
  90         for (cur = first_object; cur; cur = cur->next_object) {
  91                 schema_list_item = talloc(mem_ctx, struct schema_list);
  92                 schema_list_item->obj = cur;
  93                 DLIST_ADD_END(schema_list, schema_list_item, struct schema_list);
  94         }
  95
  96         /* resolve objects until all are resolved and in local schema */
  97         pass_no = 1;
  98
  99         while (schema_list) {
 100                 uint32_t converted_obj_count = 0;
 101                 uint32_t failed_obj_count = 0;
 102                 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 103                 W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
 104
 105                 for (schema_list_item = schema_list; schema_list_item; schema_list_item=schema_list_next_item) {
 106                         struct dsdb_extended_replicated_object object;
 107
 108                         cur = schema_list_item->obj;
 109
 110                         /* Save the next item, now we have saved out
 111                          * the current one, so we can DLIST_REMOVE it
 112                          * safely */
 113                         schema_list_next_item = schema_list_item->next;
 114
 115                         /*
 116                          * Convert the objects into LDB messages using the
 117                          * schema we have so far. It's ok if we fail to convert
 118                          * an object. We should convert more objects on next pass.
 119                          */
 120                         werr = dsdb_convert_object_ex(ldb, working_schema, pfm_remote,
 121                                                       cur, gensec_skey,
 122                                                       ignore_attids,
 123                                                       tmp_ctx, &object);
 124                         if (!W_ERROR_IS_OK(werr)) {
 125                                 DEBUG(1,("Warning: Failed to convert schema object %s into ldb msg\n",
 126                                          cur->object.identifier->dn));
 127
 128                                 failed_obj_count++;
 129                         } else {
 130                                 /*
 131                                  * Convert the schema from ldb_message format
 132                                  * (OIDs as OID strings) into schema, using
 133                                  * the remote prefixMap
 134                                  */
 135                                 werr = dsdb_schema_set_el_from_ldb_msg(ldb,
 136                                                                        working_schema,
 137                                                                        object.msg);
 138                                 if (!W_ERROR_IS_OK(werr)) {
 139                                         DEBUG(1,("Warning: failed to convert object %s into a schema element: %s\n",
 140                                                  ldb_dn_get_linearized(object.msg->dn),
 141                                                  win_errstr(werr)));
 142                                         failed_obj_count++;
 143                                 } else {
 144                                         DLIST_REMOVE(schema_list, schema_list_item);
 145                                         talloc_free(schema_list_item);
 146                                         converted_obj_count++;
 147                                 }
 148                         }
 149                 }
 150                 talloc_free(tmp_ctx);
 151
 152                 DEBUG(4,("Schema load pass %d: %d/%d of %d objects left to be converted.\n",
 153                          pass_no, failed_obj_count, converted_obj_count, object_count));
 154                 pass_no++;
 155
 156                 /* check if we converted any objects in this pass */
 157                 if (converted_obj_count == 0) {
 158                         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));
 159                         return WERR_INTERNAL_ERROR;
 160                 }
 161
 162                 /* rebuild indexes */
 163                 ret = dsdb_setup_sorted_accessors(ldb, working_schema);
 164                 if (LDB_SUCCESS != ret) {
 165                         DEBUG(0,("Failed to create schema-cache indexes!\n"));
 166                         return WERR_INTERNAL_ERROR;
 167                 }
 168         };
 169
 170         *_schema_out = working_schema;
 171
 172         return WERR_OK;
 173 }
 174
 175 static bool dsdb_attid_in_list(const uint32_t attid_list[], uint32_t attid)
 176 {
 177         const uint32_t *cur;
 178         if (!attid_list) {
 179                 return false;
 180         }
 181         for (cur = attid_list; *cur != DRSUAPI_ATTID_INVALID; cur++) {
 182                 if (*cur == attid) {
 183                         return true;
 184                 }
 185         }
 186         return false;
 187 }
 188
 189 WERROR dsdb_convert_object_ex(struct ldb_context *ldb,
 190                               const struct dsdb_schema *schema,
 191                               const struct dsdb_schema_prefixmap *pfm_remote,
 192                               const struct drsuapi_DsReplicaObjectListItemEx *in,
 193                               const DATA_BLOB *gensec_skey,
 194                               const uint32_t *ignore_attids,
 195                               TALLOC_CTX *mem_ctx,
 196                               struct dsdb_extended_replicated_object *out)
 197 {
 198         NTSTATUS nt_status;
 199         WERROR status;
 200         uint32_t i;
 201         struct ldb_message *msg;
 202         struct replPropertyMetaDataBlob *md;
 203         struct ldb_val guid_value;
 204         NTTIME whenChanged = 0;
 205         time_t whenChanged_t;
 206         const char *whenChanged_s;
 207         const char *rdn_name = NULL;
 208         const struct ldb_val *rdn_value = NULL;
 209         const struct dsdb_attribute *rdn_attr = NULL;
 210         uint32_t rdn_attid;
 211         struct drsuapi_DsReplicaAttribute *name_a = NULL;
 212         struct drsuapi_DsReplicaMetaData *name_d = NULL;
 213         struct replPropertyMetaData1 *rdn_m = NULL;
 214         struct dom_sid *sid = NULL;
 215         uint32_t rid = 0;
 216         uint32_t attr_count;
 217         int ret;
 218
 219         if (!in->object.identifier) {
 220                 return WERR_FOOBAR;
 221         }
 222
 223         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 224                 return WERR_FOOBAR;
 225         }
 226
 227         if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
 228                 return WERR_FOOBAR;
 229         }
 230
 231         if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
 232                 return WERR_FOOBAR;
 233         }
 234
 235         sid = &in->object.identifier->sid;
 236         if (sid->num_auths > 0) {
 237                 rid = sid->sub_auths[sid->num_auths - 1];
 238         }
 239
 240         msg = ldb_msg_new(mem_ctx);
 241         W_ERROR_HAVE_NO_MEMORY(msg);
 242
 243         msg->dn                 = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 244         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 245
 246         rdn_name        = ldb_dn_get_rdn_name(msg->dn);
 247         rdn_attr        = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
 248         if (!rdn_attr) {
 249                 return WERR_FOOBAR;
 250         }
 251         rdn_attid       = rdn_attr->attributeID_id;
 252         rdn_value       = ldb_dn_get_rdn_val(msg->dn);
 253
 254         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 255         msg->elements           = talloc_array(msg, struct ldb_message_element,
 256                                                msg->num_elements);
 257         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 258
 259         md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
 260         W_ERROR_HAVE_NO_MEMORY(md);
 261
 262         md->version             = 1;
 263         md->reserved            = 0;
 264         md->ctr.ctr1.count      = in->meta_data_ctr->count;
 265         md->ctr.ctr1.reserved   = 0;
 266         md->ctr.ctr1.array      = talloc_array(mem_ctx,
 267                                                struct replPropertyMetaData1,
 268                                                md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
 269         W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
 270
 271         for (i=0, attr_count=0; i < in->meta_data_ctr->count; i++, attr_count++) {
 272                 struct drsuapi_DsReplicaAttribute *a;
 273                 struct drsuapi_DsReplicaMetaData *d;
 274                 struct replPropertyMetaData1 *m;
 275                 struct ldb_message_element *e;
 276                 uint32_t j;
 277
 278                 a = &in->object.attribute_ctr.attributes[i];
 279                 d = &in->meta_data_ctr->meta_data[i];
 280                 m = &md->ctr.ctr1.array[attr_count];
 281                 e = &msg->elements[attr_count];
 282
 283                 if (dsdb_attid_in_list(ignore_attids, a->attid)) {
 284                         attr_count--;
 285                         continue;
 286                 }
 287
 288                 for (j=0; j<a->value_ctr.num_values; j++) {
 289                         status = drsuapi_decrypt_attribute(a->value_ctr.values[j].blob, gensec_skey, rid, a);
 290                         W_ERROR_NOT_OK_RETURN(status);
 291                 }
 292
 293                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
 294                                                        a, msg->elements, e);
 295                 W_ERROR_NOT_OK_RETURN(status);
 296
 297                 m->attid                        = a->attid;
 298                 m->version                      = d->version;
 299                 m->originating_change_time      = d->originating_change_time;
 300                 m->originating_invocation_id    = d->originating_invocation_id;
 301                 m->originating_usn              = d->originating_usn;
 302                 m->local_usn                    = 0;
 303
 304                 if (d->originating_change_time > whenChanged) {
 305                         whenChanged = d->originating_change_time;
 306                 }
 307
 308                 if (a->attid == DRSUAPI_ATTID_name) {
 309                         name_a = a;
 310                         name_d = d;
 311                 }
 312         }
 313
 314         msg->num_elements = attr_count;
 315         md->ctr.ctr1.count = attr_count;
 316         if (name_a) {
 317                 rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
 318         }
 319
 320         if (rdn_m) {
 321                 struct ldb_message_element *el;
 322                 el = ldb_msg_find_element(msg, rdn_attr->lDAPDisplayName);
 323                 if (!el) {
 324                         ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
 325                         if (ret != LDB_SUCCESS) {
 326                                 return WERR_FOOBAR;
 327                         }
 328                 } else {
 329                         if (el->num_values != 1) {
 330                                 DEBUG(0,(__location__ ": Unexpected num_values=%u\n",
 331                                          el->num_values));
 332                                 return WERR_FOOBAR;
 333                         }
 334                         if (!ldb_val_equal_exact(&el->values[0], rdn_value)) {
 335                                 DEBUG(0,(__location__ ": RDN value changed? '%*.*s' '%*.*s'\n",
 336                                          (int)el->values[0].length, (int)el->values[0].length, el->values[0].data,
 337                                          (int)rdn_value->length, (int)rdn_value->length, rdn_value->data));
 338                                 return WERR_FOOBAR;
 339                         }
 340                 }
 341
 342                 rdn_m->attid                            = rdn_attid;
 343                 rdn_m->version                          = name_d->version;
 344                 rdn_m->originating_change_time          = name_d->originating_change_time;
 345                 rdn_m->originating_invocation_id        = name_d->originating_invocation_id;
 346                 rdn_m->originating_usn                  = name_d->originating_usn;
 347                 rdn_m->local_usn                        = 0;
 348                 md->ctr.ctr1.count++;
 349
 350         }
 351
 352         whenChanged_t = nt_time_to_unix(whenChanged);
 353         whenChanged_s = ldb_timestring(msg, whenChanged_t);
 354         W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
 355
 356         nt_status = GUID_to_ndr_blob(&in->object.identifier->guid, msg, &guid_value);
 357         if (!NT_STATUS_IS_OK(nt_status)) {
 358                 return ntstatus_to_werror(nt_status);
 359         }
 360
 361         out->msg                = msg;
 362         out->guid_value         = guid_value;
 363         out->when_changed       = whenChanged_s;
 364         out->meta_data          = md;
 365         return WERR_OK;
 366 }
 367
 368 WERROR dsdb_replicated_objects_convert(struct ldb_context *ldb,
 369                                        const struct dsdb_schema *schema,
 370                                        const char *partition_dn_str,
 371                                        const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 372                                        uint32_t object_count,
 373                                        const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 374                                        uint32_t linked_attributes_count,
 375                                        const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
 376                                        const struct repsFromTo1 *source_dsa,
 377                                        const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
 378                                        const DATA_BLOB *gensec_skey,
 379                                        TALLOC_CTX *mem_ctx,
 380                                        struct dsdb_extended_replicated_objects **objects)
 381 {
 382         WERROR status;
 383         struct ldb_dn *partition_dn;
 384         struct dsdb_schema_prefixmap *pfm_remote;
 385         struct dsdb_extended_replicated_objects *out;
 386         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 387         uint32_t i;
 388
 389         out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
 390         W_ERROR_HAVE_NO_MEMORY(out);
 391         out->version            = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
 392
 393         /*
 394          * Ensure schema is kept valid for as long as 'out'
 395          * which may contain pointers to it
 396          */
 397         schema = talloc_reference(out, schema);
 398         W_ERROR_HAVE_NO_MEMORY(schema);
 399
 400         partition_dn = ldb_dn_new(out, ldb, partition_dn_str);
 401         W_ERROR_HAVE_NO_MEMORY_AND_FREE(partition_dn, out);
 402
 403         status = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
 404                                                   out, &pfm_remote, NULL);
 405         if (!W_ERROR_IS_OK(status)) {
 406                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
 407                          win_errstr(status)));
 408                 talloc_free(out);
 409                 return status;
 410         }
 411
 412         if (ldb_dn_compare(partition_dn, ldb_get_schema_basedn(ldb)) != 0) {
 413                 /*
 414                  * check for schema changes in case
 415                  * we are not replicating Schema NC
 416                  */
 417                 status = dsdb_schema_info_cmp(schema, mapping_ctr);
 418                 if (!W_ERROR_IS_OK(status)) {
 419                         DEBUG(1,("Remote schema has changed while replicating %s\n",
 420                                  partition_dn_str));
 421                         talloc_free(out);
 422                         return status;
 423                 }
 424         }
 425
 426         out->partition_dn       = partition_dn;
 427
 428         out->source_dsa         = source_dsa;
 429         out->uptodateness_vector= uptodateness_vector;
 430
 431         out->num_objects        = object_count;
 432         out->objects            = talloc_array(out,
 433                                                struct dsdb_extended_replicated_object,
 434                                                out->num_objects);
 435         W_ERROR_HAVE_NO_MEMORY_AND_FREE(out->objects, out);
 436
 437         /* pass the linked attributes down to the repl_meta_data
 438            module */
 439         out->linked_attributes_count = linked_attributes_count;
 440         out->linked_attributes       = linked_attributes;
 441
 442         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 443                 if (i == out->num_objects) {
 444                         talloc_free(out);
 445                         return WERR_FOOBAR;
 446                 }
 447
 448                 status = dsdb_convert_object_ex(ldb, schema, pfm_remote,
 449                                                 cur, gensec_skey,
 450                                                 NULL,
 451                                                 out->objects, &out->objects[i]);
 452                 if (!W_ERROR_IS_OK(status)) {
 453                         talloc_free(out);
 454                         DEBUG(0,("Failed to convert object %s: %s\n",
 455                                  cur->object.identifier->dn,
 456                                  win_errstr(status)));
 457                         return status;
 458                 }
 459         }
 460         if (i != out->num_objects) {
 461                 talloc_free(out);
 462                 return WERR_FOOBAR;
 463         }
 464
 465         /* free pfm_remote, we won't need it anymore */
 466         talloc_free(pfm_remote);
 467
 468         *objects = out;
 469         return WERR_OK;
 470 }
 471
 472 /**
 473  * Commits a list of replicated objects.
 474  *
 475  * @param working_schema dsdb_schema to be used for resolving
 476  *                       Classes/Attributes during Schema replication. If not NULL,
 477  *                       it will be set on ldb and used while committing replicated objects
 478  */
 479 WERROR dsdb_replicated_objects_commit(struct ldb_context *ldb,
 480                                       struct dsdb_schema *working_schema,
 481                                       struct dsdb_extended_replicated_objects *objects,
 482                                       uint64_t *notify_uSN)
 483 {
 484         WERROR werr;
 485         struct ldb_result *ext_res;
 486         struct dsdb_schema *cur_schema = NULL;
 487         int ret;
 488         uint64_t seq_num1, seq_num2;
 489
 490         /* TODO: handle linked attributes */
 491
 492         /* wrap the extended operation in a transaction
 493            See [MS-DRSR] 3.3.2 Transactions
 494          */
 495         ret = ldb_transaction_start(ldb);
 496         if (ret != LDB_SUCCESS) {
 497                 DEBUG(0,(__location__ " Failed to start transaction\n"));
 498                 return WERR_FOOBAR;
 499         }
 500
 501         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num1, NULL);
 502         if (ret != LDB_SUCCESS) {
 503                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 504                 ldb_transaction_cancel(ldb);
 505                 return WERR_FOOBAR;
 506         }
 507
 508         /*
 509          * Set working_schema for ldb in case we are replicating from Schema NC.
 510          * Schema won't be reloaded during Replicated Objects commit, as it is
 511          * done in a transaction. So we need some way to search for newly
 512          * added Classes and Attributes
 513          */
 514         if (working_schema) {
 515                 /* store current schema so we can fall back in case of failure */
 516                 cur_schema = dsdb_get_schema(ldb, working_schema);
 517
 518                 ret = dsdb_reference_schema(ldb, working_schema, false);
 519                 if (ret != LDB_SUCCESS) {
 520                         DEBUG(0,(__location__ "Failed to reference working schema - %s\n",
 521                                  ldb_strerror(ret)));
 522                         /* TODO: Map LDB Error to NTSTATUS? */
 523                         ldb_transaction_cancel(ldb);
 524                         return WERR_INTERNAL_ERROR;
 525                 }
 526         }
 527
 528         ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, objects, &ext_res);
 529         if (ret != LDB_SUCCESS) {
 530                 /* restore previous schema */
 531                 if (cur_schema ) {
 532                         dsdb_reference_schema(ldb, cur_schema, false);
 533                         dsdb_make_schema_global(ldb, cur_schema);
 534                 }
 535
 536                 DEBUG(0,("Failed to apply records: %s: %s\n",
 537                          ldb_errstring(ldb), ldb_strerror(ret)));
 538                 ldb_transaction_cancel(ldb);
 539                 return WERR_FOOBAR;
 540         }
 541         talloc_free(ext_res);
 542
 543         /* Save our updated prefixMap */
 544         if (working_schema) {
 545                 werr = dsdb_write_prefixes_from_schema_to_ldb(working_schema,
 546                                                               ldb,
 547                                                               working_schema);
 548                 if (!W_ERROR_IS_OK(werr)) {
 549                         /* restore previous schema */
 550                         if (cur_schema ) {
 551                                 dsdb_reference_schema(ldb, cur_schema, false);
 552                                 dsdb_make_schema_global(ldb, cur_schema);
 553                         }
 554                         DEBUG(0,("Failed to save updated prefixMap: %s\n",
 555                                  win_errstr(werr)));
 556                         return werr;
 557                 }
 558         }
 559
 560         ret = ldb_transaction_prepare_commit(ldb);
 561         if (ret != LDB_SUCCESS) {
 562                 /* restore previous schema */
 563                 if (cur_schema ) {
 564                         dsdb_reference_schema(ldb, cur_schema, false);
 565                         dsdb_make_schema_global(ldb, cur_schema);
 566                 }
 567                 DEBUG(0,(__location__ " Failed to prepare commit of transaction: %s\n",
 568                          ldb_errstring(ldb)));
 569                 return WERR_FOOBAR;
 570         }
 571
 572         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num2, NULL);
 573         if (ret != LDB_SUCCESS) {
 574                 /* restore previous schema */
 575                 if (cur_schema ) {
 576                         dsdb_reference_schema(ldb, cur_schema, false);
 577                         dsdb_make_schema_global(ldb, cur_schema);
 578                 }
 579                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 580                 ldb_transaction_cancel(ldb);
 581                 return WERR_FOOBAR;
 582         }
 583
 584         /* if this replication partner didn't need to be notified
 585            before this transaction then it still doesn't need to be
 586            notified, as the changes came from this server */
 587         if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) {
 588                 *notify_uSN = seq_num2;
 589         }
 590
 591         ret = ldb_transaction_commit(ldb);
 592         if (ret != LDB_SUCCESS) {
 593                 /* restore previous schema */
 594                 if (cur_schema ) {
 595                         dsdb_reference_schema(ldb, cur_schema, false);
 596                         dsdb_make_schema_global(ldb, cur_schema);
 597                 }
 598                 DEBUG(0,(__location__ " Failed to commit transaction\n"));
 599                 return WERR_FOOBAR;
 600         }
 601
 602         /*
 603          * Reset the Schema used by ldb. This will lead to
 604          * a schema cache being refreshed from database.
 605          */
 606         if (working_schema) {
 607                 cur_schema = dsdb_get_schema(ldb, NULL);
 608                 /* TODO: What we do in case dsdb_get_schema() fail?
 609                  *       We can't fallback at this point anymore */
 610                 if (cur_schema) {
 611                         dsdb_make_schema_global(ldb, cur_schema);
 612                 }
 613         }
 614
 615         DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n",
 616                  objects->num_objects, objects->linked_attributes_count,
 617                  ldb_dn_get_linearized(objects->partition_dn)));
 618
 619         return WERR_OK;
 620 }
 621
 622 static WERROR dsdb_origin_object_convert(struct ldb_context *ldb,
 623                                          const struct dsdb_schema *schema,
 624                                          const struct drsuapi_DsReplicaObjectListItem *in,
 625                                          TALLOC_CTX *mem_ctx,
 626                                          struct ldb_message **_msg)
 627 {
 628         WERROR status;
 629         unsigned int i;
 630         struct ldb_message *msg;
 631
 632         if (!in->object.identifier) {
 633                 return WERR_FOOBAR;
 634         }
 635
 636         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 637                 return WERR_FOOBAR;
 638         }
 639
 640         msg = ldb_msg_new(mem_ctx);
 641         W_ERROR_HAVE_NO_MEMORY(msg);
 642
 643         msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 644         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 645
 646         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 647         msg->elements           = talloc_array(msg, struct ldb_message_element,
 648                                                msg->num_elements);
 649         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 650
 651         for (i=0; i < msg->num_elements; i++) {
 652                 struct drsuapi_DsReplicaAttribute *a;
 653                 struct ldb_message_element *e;
 654
 655                 a = &in->object.attribute_ctr.attributes[i];
 656                 e = &msg->elements[i];
 657
 658                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, schema->prefixmap,
 659                                                        a, msg->elements, e);
 660                 W_ERROR_NOT_OK_RETURN(status);
 661         }
 662
 663
 664         *_msg = msg;
 665
 666         return WERR_OK;
 667 }
 668
 669 WERROR dsdb_origin_objects_commit(struct ldb_context *ldb,
 670                                   TALLOC_CTX *mem_ctx,
 671                                   const struct drsuapi_DsReplicaObjectListItem *first_object,
 672                                   uint32_t *_num,
 673                                   struct drsuapi_DsReplicaObjectIdentifier2 **_ids)
 674 {
 675         WERROR status;
 676         const struct dsdb_schema *schema;
 677         const struct drsuapi_DsReplicaObjectListItem *cur;
 678         struct ldb_message **objects;
 679         struct drsuapi_DsReplicaObjectIdentifier2 *ids;
 680         uint32_t i;
 681         uint32_t num_objects = 0;
 682         const char * const attrs[] = {
 683                 "objectGUID",
 684                 "objectSid",
 685                 NULL
 686         };
 687         struct ldb_result *res;
 688         int ret;
 689
 690         for (cur = first_object; cur; cur = cur->next_object) {
 691                 num_objects++;
 692         }
 693
 694         if (num_objects == 0) {
 695                 return WERR_OK;
 696         }
 697
 698         ret = ldb_transaction_start(ldb);
 699         if (ret != LDB_SUCCESS) {
 700                 return WERR_DS_INTERNAL_FAILURE;
 701         }
 702
 703         objects = talloc_array(mem_ctx, struct ldb_message *,
 704                                num_objects);
 705         if (objects == NULL) {
 706                 status = WERR_NOMEM;
 707                 goto cancel;
 708         }
 709
 710         schema = dsdb_get_schema(ldb, objects);
 711         if (!schema) {
 712                 return WERR_DS_SCHEMA_NOT_LOADED;
 713         }
 714
 715         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 716                 status = dsdb_origin_object_convert(ldb, schema, cur,
 717                                                     objects, &objects[i]);
 718                 if (!W_ERROR_IS_OK(status)) {
 719                         goto cancel;
 720                 }
 721         }
 722
 723         ids = talloc_array(mem_ctx,
 724                            struct drsuapi_DsReplicaObjectIdentifier2,
 725                            num_objects);
 726         if (ids == NULL) {
 727                 status = WERR_NOMEM;
 728                 goto cancel;
 729         }
 730
 731         for (i=0; i < num_objects; i++) {
 732                 struct dom_sid *sid = NULL;
 733                 struct ldb_request *add_req;
 734
 735                 DEBUG(6,(__location__ ": adding %s\n",
 736                          ldb_dn_get_linearized(objects[i]->dn)));
 737
 738                 ret = ldb_build_add_req(&add_req,
 739                                         ldb,
 740                                         objects,
 741                                         objects[i],
 742                                         NULL,
 743                                         NULL,
 744                                         ldb_op_default_callback,
 745                                         NULL);
 746                 if (ret != LDB_SUCCESS) {
 747                         status = WERR_DS_INTERNAL_FAILURE;
 748                         goto cancel;
 749                 }
 750
 751                 ret = ldb_request_add_control(add_req, LDB_CONTROL_RELAX_OID, true, NULL);
 752                 if (ret != LDB_SUCCESS) {
 753                         status = WERR_DS_INTERNAL_FAILURE;
 754                         goto cancel;
 755                 }
 756
 757                 ret = ldb_request(ldb, add_req);
 758                 if (ret == LDB_SUCCESS) {
 759                         ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
 760                 }
 761                 if (ret != LDB_SUCCESS) {
 762                         DEBUG(0,(__location__ ": Failed add of %s - %s\n",
 763                                  ldb_dn_get_linearized(objects[i]->dn), ldb_errstring(ldb)));
 764                         status = WERR_DS_INTERNAL_FAILURE;
 765                         goto cancel;
 766                 }
 767
 768                 talloc_free(add_req);
 769
 770                 ret = ldb_search(ldb, objects, &res, objects[i]->dn,
 771                                  LDB_SCOPE_BASE, attrs,
 772                                  "(objectClass=*)");
 773                 if (ret != LDB_SUCCESS) {
 774                         status = WERR_DS_INTERNAL_FAILURE;
 775                         goto cancel;
 776                 }
 777                 ids[i].guid = samdb_result_guid(res->msgs[0], "objectGUID");
 778                 sid = samdb_result_dom_sid(objects, res->msgs[0], "objectSid");
 779                 if (sid) {
 780                         ids[i].sid = *sid;
 781                 } else {
 782                         ZERO_STRUCT(ids[i].sid);
 783                 }
 784         }
 785
 786         ret = ldb_transaction_commit(ldb);
 787         if (ret != LDB_SUCCESS) {
 788                 return WERR_DS_INTERNAL_FAILURE;
 789         }
 790
 791         talloc_free(objects);
 792
 793         *_num = num_objects;
 794         *_ids = ids;
 795         return WERR_OK;
 796
 797 cancel:
 798         talloc_free(objects);
 799         ldb_transaction_cancel(ldb);
 800         return status;
 801 }