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                                                       0,
 124                                                       tmp_ctx, &object);
 125                         if (!W_ERROR_IS_OK(werr)) {
 126                                 DEBUG(4,("debug: Failed to convert schema object %s into ldb msg, will try during next loop\n",
 127                                           cur->object.identifier->dn));
 128
 129                                 failed_obj_count++;
 130                         } else {
 131                                 /*
 132                                  * Convert the schema from ldb_message format
 133                                  * (OIDs as OID strings) into schema, using
 134                                  * the remote prefixMap
 135                                  */
 136                                 werr = dsdb_schema_set_el_from_ldb_msg(ldb,
 137                                                                        working_schema,
 138                                                                        object.msg);
 139                                 if (!W_ERROR_IS_OK(werr)) {
 140                                         DEBUG(4,("debug: failed to convert object %s into a schema element, will try during next loop: %s\n",
 141                                                  ldb_dn_get_linearized(object.msg->dn),
 142                                                  win_errstr(werr)));
 143                                         failed_obj_count++;
 144                                 } else {
 145                                         DLIST_REMOVE(schema_list, schema_list_item);
 146                                         talloc_free(schema_list_item);
 147                                         converted_obj_count++;
 148                                 }
 149                         }
 150                 }
 151                 talloc_free(tmp_ctx);
 152
 153                 DEBUG(4,("Schema load pass %d: %d/%d of %d objects left to be converted.\n",
 154                          pass_no, failed_obj_count, converted_obj_count, object_count));
 155                 pass_no++;
 156
 157                 /* check if we converted any objects in this pass */
 158                 if (converted_obj_count == 0) {
 159                         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));
 160                         return WERR_INTERNAL_ERROR;
 161                 }
 162
 163                 /* rebuild indexes */
 164                 ret = dsdb_setup_sorted_accessors(ldb, working_schema);
 165                 if (LDB_SUCCESS != ret) {
 166                         DEBUG(0,("Failed to create schema-cache indexes!\n"));
 167                         return WERR_INTERNAL_ERROR;
 168                 }
 169         };
 170
 171         *_schema_out = working_schema;
 172
 173         return WERR_OK;
 174 }
 175
 176 static bool dsdb_attid_in_list(const uint32_t attid_list[], uint32_t attid)
 177 {
 178         const uint32_t *cur;
 179         if (!attid_list) {
 180                 return false;
 181         }
 182         for (cur = attid_list; *cur != DRSUAPI_ATTID_INVALID; cur++) {
 183                 if (*cur == attid) {
 184                         return true;
 185                 }
 186         }
 187         return false;
 188 }
 189
 190 WERROR dsdb_convert_object_ex(struct ldb_context *ldb,
 191                               const struct dsdb_schema *schema,
 192                               const struct dsdb_schema_prefixmap *pfm_remote,
 193                               const struct drsuapi_DsReplicaObjectListItemEx *in,
 194                               const DATA_BLOB *gensec_skey,
 195                               const uint32_t *ignore_attids,
 196                               uint32_t dsdb_repl_flags,
 197                               TALLOC_CTX *mem_ctx,
 198                               struct dsdb_extended_replicated_object *out)
 199 {
 200         NTSTATUS nt_status;
 201         WERROR status;
 202         uint32_t i;
 203         struct ldb_message *msg;
 204         struct replPropertyMetaDataBlob *md;
 205         struct ldb_val guid_value;
 206         NTTIME whenChanged = 0;
 207         time_t whenChanged_t;
 208         const char *whenChanged_s;
 209         const char *rdn_name = NULL;
 210         const struct ldb_val *rdn_value = NULL;
 211         const struct dsdb_attribute *rdn_attr = NULL;
 212         uint32_t rdn_attid;
 213         struct drsuapi_DsReplicaAttribute *name_a = NULL;
 214         struct drsuapi_DsReplicaMetaData *name_d = NULL;
 215         struct replPropertyMetaData1 *rdn_m = NULL;
 216         struct dom_sid *sid = NULL;
 217         uint32_t rid = 0;
 218         uint32_t attr_count;
 219         int ret;
 220
 221         if (!in->object.identifier) {
 222                 return WERR_FOOBAR;
 223         }
 224
 225         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 226                 return WERR_FOOBAR;
 227         }
 228
 229         if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
 230                 return WERR_FOOBAR;
 231         }
 232
 233         if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
 234                 return WERR_FOOBAR;
 235         }
 236
 237         sid = &in->object.identifier->sid;
 238         if (sid->num_auths > 0) {
 239                 rid = sid->sub_auths[sid->num_auths - 1];
 240         }
 241
 242         msg = ldb_msg_new(mem_ctx);
 243         W_ERROR_HAVE_NO_MEMORY(msg);
 244
 245         msg->dn                 = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 246         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 247
 248         rdn_name        = ldb_dn_get_rdn_name(msg->dn);
 249         rdn_attr        = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
 250         if (!rdn_attr) {
 251                 return WERR_FOOBAR;
 252         }
 253         rdn_attid       = rdn_attr->attributeID_id;
 254         rdn_value       = ldb_dn_get_rdn_val(msg->dn);
 255
 256         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 257         msg->elements           = talloc_array(msg, struct ldb_message_element,
 258                                                msg->num_elements);
 259         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 260
 261         md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
 262         W_ERROR_HAVE_NO_MEMORY(md);
 263
 264         md->version             = 1;
 265         md->reserved            = 0;
 266         md->ctr.ctr1.count      = in->meta_data_ctr->count;
 267         md->ctr.ctr1.reserved   = 0;
 268         md->ctr.ctr1.array      = talloc_array(mem_ctx,
 269                                                struct replPropertyMetaData1,
 270                                                md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
 271         W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
 272
 273         for (i=0, attr_count=0; i < in->meta_data_ctr->count; i++, attr_count++) {
 274                 struct drsuapi_DsReplicaAttribute *a;
 275                 struct drsuapi_DsReplicaMetaData *d;
 276                 struct replPropertyMetaData1 *m;
 277                 struct ldb_message_element *e;
 278                 uint32_t j;
 279
 280                 a = &in->object.attribute_ctr.attributes[i];
 281                 d = &in->meta_data_ctr->meta_data[i];
 282                 m = &md->ctr.ctr1.array[attr_count];
 283                 e = &msg->elements[attr_count];
 284
 285                 if (dsdb_attid_in_list(ignore_attids, a->attid)) {
 286                         attr_count--;
 287                         continue;
 288                 }
 289
 290                 for (j=0; j<a->value_ctr.num_values; j++) {
 291                         status = drsuapi_decrypt_attribute(a->value_ctr.values[j].blob, gensec_skey, rid, a);
 292                         W_ERROR_NOT_OK_RETURN(status);
 293                 }
 294
 295                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
 296                                                        a, msg->elements, e);
 297                 W_ERROR_NOT_OK_RETURN(status);
 298
 299                 m->attid                        = a->attid;
 300                 m->version                      = d->version;
 301                 m->originating_change_time      = d->originating_change_time;
 302                 m->originating_invocation_id    = d->originating_invocation_id;
 303                 m->originating_usn              = d->originating_usn;
 304                 m->local_usn                    = 0;
 305
 306                 if (d->originating_change_time > whenChanged) {
 307                         whenChanged = d->originating_change_time;
 308                 }
 309
 310                 if (a->attid == DRSUAPI_ATTID_name) {
 311                         name_a = a;
 312                         name_d = d;
 313                 }
 314         }
 315
 316         msg->num_elements = attr_count;
 317         md->ctr.ctr1.count = attr_count;
 318         if (name_a) {
 319                 rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
 320         }
 321
 322         if (rdn_m) {
 323                 struct ldb_message_element *el;
 324                 el = ldb_msg_find_element(msg, rdn_attr->lDAPDisplayName);
 325                 if (!el) {
 326                         ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
 327                         if (ret != LDB_SUCCESS) {
 328                                 return WERR_FOOBAR;
 329                         }
 330                 } else {
 331                         if (el->num_values != 1) {
 332                                 DEBUG(0,(__location__ ": Unexpected num_values=%u\n",
 333                                          el->num_values));
 334                                 return WERR_FOOBAR;
 335                         }
 336                         if (!ldb_val_equal_exact(&el->values[0], rdn_value)) {
 337                                 DEBUG(0,(__location__ ": RDN value changed? '%*.*s' '%*.*s'\n",
 338                                          (int)el->values[0].length, (int)el->values[0].length, el->values[0].data,
 339                                          (int)rdn_value->length, (int)rdn_value->length, rdn_value->data));
 340                                 return WERR_FOOBAR;
 341                         }
 342                 }
 343
 344                 rdn_m->attid                            = rdn_attid;
 345                 rdn_m->version                          = name_d->version;
 346                 rdn_m->originating_change_time          = name_d->originating_change_time;
 347                 rdn_m->originating_invocation_id        = name_d->originating_invocation_id;
 348                 rdn_m->originating_usn                  = name_d->originating_usn;
 349                 rdn_m->local_usn                        = 0;
 350                 md->ctr.ctr1.count++;
 351
 352         }
 353
 354         if (dsdb_repl_flags & DSDB_REPL_FLAG_PARTIAL_REPLICA) {
 355                 /* the instanceType type for partial_replica
 356                    replication is sent via DRS with TYPE_WRITE set, but
 357                    must be used on the client with TYPE_WRITE removed
 358                 */
 359                 int instanceType = ldb_msg_find_attr_as_int(msg, "instanceType", 0);
 360                 if (instanceType & INSTANCE_TYPE_WRITE) {
 361                         instanceType &= ~INSTANCE_TYPE_WRITE;
 362                         ldb_msg_remove_attr(msg, "instanceType");
 363                         if (ldb_msg_add_fmt(msg, "instanceType", "%d", instanceType) != LDB_SUCCESS) {
 364                                 return WERR_INTERNAL_ERROR;
 365                         }
 366                 }
 367         }
 368
 369         whenChanged_t = nt_time_to_unix(whenChanged);
 370         whenChanged_s = ldb_timestring(msg, whenChanged_t);
 371         W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
 372
 373         nt_status = GUID_to_ndr_blob(&in->object.identifier->guid, msg, &guid_value);
 374         if (!NT_STATUS_IS_OK(nt_status)) {
 375                 return ntstatus_to_werror(nt_status);
 376         }
 377
 378         out->msg                = msg;
 379         out->guid_value         = guid_value;
 380         out->when_changed       = whenChanged_s;
 381         out->meta_data          = md;
 382         return WERR_OK;
 383 }
 384
 385 WERROR dsdb_replicated_objects_convert(struct ldb_context *ldb,
 386                                        const struct dsdb_schema *schema,
 387                                        const char *partition_dn_str,
 388                                        const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 389                                        uint32_t object_count,
 390                                        const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 391                                        uint32_t linked_attributes_count,
 392                                        const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
 393                                        const struct repsFromTo1 *source_dsa,
 394                                        const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
 395                                        const DATA_BLOB *gensec_skey,
 396                                        uint32_t dsdb_repl_flags,
 397                                        TALLOC_CTX *mem_ctx,
 398                                        struct dsdb_extended_replicated_objects **objects)
 399 {
 400         WERROR status;
 401         struct ldb_dn *partition_dn;
 402         struct dsdb_schema_prefixmap *pfm_remote;
 403         struct dsdb_extended_replicated_objects *out;
 404         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 405         uint32_t i;
 406
 407         out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
 408         W_ERROR_HAVE_NO_MEMORY(out);
 409         out->version            = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
 410         out->dsdb_repl_flags    = dsdb_repl_flags;
 411
 412         /*
 413          * Ensure schema is kept valid for as long as 'out'
 414          * which may contain pointers to it
 415          */
 416         schema = talloc_reference(out, schema);
 417         W_ERROR_HAVE_NO_MEMORY(schema);
 418
 419         partition_dn = ldb_dn_new(out, ldb, partition_dn_str);
 420         W_ERROR_HAVE_NO_MEMORY_AND_FREE(partition_dn, out);
 421
 422         status = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
 423                                                   out, &pfm_remote, NULL);
 424         if (!W_ERROR_IS_OK(status)) {
 425                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
 426                          win_errstr(status)));
 427                 talloc_free(out);
 428                 return status;
 429         }
 430
 431         if (ldb_dn_compare(partition_dn, ldb_get_schema_basedn(ldb)) != 0) {
 432                 /*
 433                  * check for schema changes in case
 434                  * we are not replicating Schema NC
 435                  */
 436                 status = dsdb_schema_info_cmp(schema, mapping_ctr);
 437                 if (!W_ERROR_IS_OK(status)) {
 438                         DEBUG(1,("Remote schema has changed while replicating %s\n",
 439                                  partition_dn_str));
 440                         talloc_free(out);
 441                         return status;
 442                 }
 443         }
 444
 445         out->partition_dn       = partition_dn;
 446
 447         out->source_dsa         = source_dsa;
 448         out->uptodateness_vector= uptodateness_vector;
 449
 450         out->num_objects        = object_count;
 451         out->objects            = talloc_array(out,
 452                                                struct dsdb_extended_replicated_object,
 453                                                out->num_objects);
 454         W_ERROR_HAVE_NO_MEMORY_AND_FREE(out->objects, out);
 455
 456         /* pass the linked attributes down to the repl_meta_data
 457            module */
 458         out->linked_attributes_count = linked_attributes_count;
 459         out->linked_attributes       = linked_attributes;
 460
 461         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 462                 if (i == out->num_objects) {
 463                         talloc_free(out);
 464                         return WERR_FOOBAR;
 465                 }
 466
 467                 status = dsdb_convert_object_ex(ldb, schema, pfm_remote,
 468                                                 cur, gensec_skey,
 469                                                 NULL,
 470                                                 dsdb_repl_flags,
 471                                                 out->objects, &out->objects[i]);
 472                 if (!W_ERROR_IS_OK(status)) {
 473                         talloc_free(out);
 474                         DEBUG(0,("Failed to convert object %s: %s\n",
 475                                  cur->object.identifier->dn,
 476                                  win_errstr(status)));
 477                         return status;
 478                 }
 479         }
 480         if (i != out->num_objects) {
 481                 talloc_free(out);
 482                 return WERR_FOOBAR;
 483         }
 484
 485         /* free pfm_remote, we won't need it anymore */
 486         talloc_free(pfm_remote);
 487
 488         *objects = out;
 489         return WERR_OK;
 490 }
 491
 492 /**
 493  * Commits a list of replicated objects.
 494  *
 495  * @param working_schema dsdb_schema to be used for resolving
 496  *                       Classes/Attributes during Schema replication. If not NULL,
 497  *                       it will be set on ldb and used while committing replicated objects
 498  */
 499 WERROR dsdb_replicated_objects_commit(struct ldb_context *ldb,
 500                                       struct dsdb_schema *working_schema,
 501                                       struct dsdb_extended_replicated_objects *objects,
 502                                       uint64_t *notify_uSN)
 503 {
 504         WERROR werr;
 505         struct ldb_result *ext_res;
 506         struct dsdb_schema *cur_schema = NULL;
 507         int ret;
 508         uint64_t seq_num1, seq_num2;
 509
 510         /* TODO: handle linked attributes */
 511
 512         /* wrap the extended operation in a transaction
 513            See [MS-DRSR] 3.3.2 Transactions
 514          */
 515         ret = ldb_transaction_start(ldb);
 516         if (ret != LDB_SUCCESS) {
 517                 DEBUG(0,(__location__ " Failed to start transaction\n"));
 518                 return WERR_FOOBAR;
 519         }
 520
 521         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num1, NULL);
 522         if (ret != LDB_SUCCESS) {
 523                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 524                 ldb_transaction_cancel(ldb);
 525                 return WERR_FOOBAR;
 526         }
 527
 528         /*
 529          * Set working_schema for ldb in case we are replicating from Schema NC.
 530          * Schema won't be reloaded during Replicated Objects commit, as it is
 531          * done in a transaction. So we need some way to search for newly
 532          * added Classes and Attributes
 533          */
 534         if (working_schema) {
 535                 /* store current schema so we can fall back in case of failure */
 536                 cur_schema = dsdb_get_schema(ldb, working_schema);
 537
 538                 ret = dsdb_reference_schema(ldb, working_schema, false);
 539                 if (ret != LDB_SUCCESS) {
 540                         DEBUG(0,(__location__ "Failed to reference working schema - %s\n",
 541                                  ldb_strerror(ret)));
 542                         /* TODO: Map LDB Error to NTSTATUS? */
 543                         ldb_transaction_cancel(ldb);
 544                         return WERR_INTERNAL_ERROR;
 545                 }
 546         }
 547
 548         ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, objects, &ext_res);
 549         if (ret != LDB_SUCCESS) {
 550                 /* restore previous schema */
 551                 if (cur_schema ) {
 552                         dsdb_reference_schema(ldb, cur_schema, false);
 553                         dsdb_make_schema_global(ldb, cur_schema);
 554                 }
 555
 556                 DEBUG(0,("Failed to apply records: %s: %s\n",
 557                          ldb_errstring(ldb), ldb_strerror(ret)));
 558                 ldb_transaction_cancel(ldb);
 559                 return WERR_FOOBAR;
 560         }
 561         talloc_free(ext_res);
 562
 563         /* Save our updated prefixMap */
 564         if (working_schema) {
 565                 werr = dsdb_write_prefixes_from_schema_to_ldb(working_schema,
 566                                                               ldb,
 567                                                               working_schema);
 568                 if (!W_ERROR_IS_OK(werr)) {
 569                         /* restore previous schema */
 570                         if (cur_schema ) {
 571                                 dsdb_reference_schema(ldb, cur_schema, false);
 572                                 dsdb_make_schema_global(ldb, cur_schema);
 573                         }
 574                         DEBUG(0,("Failed to save updated prefixMap: %s\n",
 575                                  win_errstr(werr)));
 576                         return werr;
 577                 }
 578         }
 579
 580         ret = ldb_transaction_prepare_commit(ldb);
 581         if (ret != LDB_SUCCESS) {
 582                 /* restore previous schema */
 583                 if (cur_schema ) {
 584                         dsdb_reference_schema(ldb, cur_schema, false);
 585                         dsdb_make_schema_global(ldb, cur_schema);
 586                 }
 587                 DEBUG(0,(__location__ " Failed to prepare commit of transaction: %s\n",
 588                          ldb_errstring(ldb)));
 589                 return WERR_FOOBAR;
 590         }
 591
 592         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num2, NULL);
 593         if (ret != LDB_SUCCESS) {
 594                 /* restore previous schema */
 595                 if (cur_schema ) {
 596                         dsdb_reference_schema(ldb, cur_schema, false);
 597                         dsdb_make_schema_global(ldb, cur_schema);
 598                 }
 599                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 600                 ldb_transaction_cancel(ldb);
 601                 return WERR_FOOBAR;
 602         }
 603
 604         /* if this replication partner didn't need to be notified
 605            before this transaction then it still doesn't need to be
 606            notified, as the changes came from this server */
 607         if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) {
 608                 *notify_uSN = seq_num2;
 609         }
 610
 611         ret = ldb_transaction_commit(ldb);
 612         if (ret != LDB_SUCCESS) {
 613                 /* restore previous schema */
 614                 if (cur_schema ) {
 615                         dsdb_reference_schema(ldb, cur_schema, false);
 616                         dsdb_make_schema_global(ldb, cur_schema);
 617                 }
 618                 DEBUG(0,(__location__ " Failed to commit transaction\n"));
 619                 return WERR_FOOBAR;
 620         }
 621
 622         /*
 623          * Reset the Schema used by ldb. This will lead to
 624          * a schema cache being refreshed from database.
 625          */
 626         if (working_schema) {
 627                 cur_schema = dsdb_get_schema(ldb, NULL);
 628                 /* TODO: What we do in case dsdb_get_schema() fail?
 629                  *       We can't fallback at this point anymore */
 630                 if (cur_schema) {
 631                         dsdb_make_schema_global(ldb, cur_schema);
 632                 }
 633         }
 634
 635         DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n",
 636                  objects->num_objects, objects->linked_attributes_count,
 637                  ldb_dn_get_linearized(objects->partition_dn)));
 638
 639         return WERR_OK;
 640 }
 641
 642 static WERROR dsdb_origin_object_convert(struct ldb_context *ldb,
 643                                          const struct dsdb_schema *schema,
 644                                          const struct drsuapi_DsReplicaObjectListItem *in,
 645                                          TALLOC_CTX *mem_ctx,
 646                                          struct ldb_message **_msg)
 647 {
 648         WERROR status;
 649         unsigned int i;
 650         struct ldb_message *msg;
 651
 652         if (!in->object.identifier) {
 653                 return WERR_FOOBAR;
 654         }
 655
 656         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 657                 return WERR_FOOBAR;
 658         }
 659
 660         msg = ldb_msg_new(mem_ctx);
 661         W_ERROR_HAVE_NO_MEMORY(msg);
 662
 663         msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 664         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 665
 666         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 667         msg->elements           = talloc_array(msg, struct ldb_message_element,
 668                                                msg->num_elements);
 669         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 670
 671         for (i=0; i < msg->num_elements; i++) {
 672                 struct drsuapi_DsReplicaAttribute *a;
 673                 struct ldb_message_element *e;
 674
 675                 a = &in->object.attribute_ctr.attributes[i];
 676                 e = &msg->elements[i];
 677
 678                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, schema->prefixmap,
 679                                                        a, msg->elements, e);
 680                 W_ERROR_NOT_OK_RETURN(status);
 681         }
 682
 683
 684         *_msg = msg;
 685
 686         return WERR_OK;
 687 }
 688
 689 WERROR dsdb_origin_objects_commit(struct ldb_context *ldb,
 690                                   TALLOC_CTX *mem_ctx,
 691                                   const struct drsuapi_DsReplicaObjectListItem *first_object,
 692                                   uint32_t *_num,
 693                                   uint32_t dsdb_repl_flags,
 694                                   struct drsuapi_DsReplicaObjectIdentifier2 **_ids)
 695 {
 696         WERROR status;
 697         const struct dsdb_schema *schema;
 698         const struct drsuapi_DsReplicaObjectListItem *cur;
 699         struct ldb_message **objects;
 700         struct drsuapi_DsReplicaObjectIdentifier2 *ids;
 701         uint32_t i;
 702         uint32_t num_objects = 0;
 703         const char * const attrs[] = {
 704                 "objectGUID",
 705                 "objectSid",
 706                 NULL
 707         };
 708         struct ldb_result *res;
 709         int ret;
 710
 711         for (cur = first_object; cur; cur = cur->next_object) {
 712                 num_objects++;
 713         }
 714
 715         if (num_objects == 0) {
 716                 return WERR_OK;
 717         }
 718
 719         ret = ldb_transaction_start(ldb);
 720         if (ret != LDB_SUCCESS) {
 721                 return WERR_DS_INTERNAL_FAILURE;
 722         }
 723
 724         objects = talloc_array(mem_ctx, struct ldb_message *,
 725                                num_objects);
 726         if (objects == NULL) {
 727                 status = WERR_NOMEM;
 728                 goto cancel;
 729         }
 730
 731         schema = dsdb_get_schema(ldb, objects);
 732         if (!schema) {
 733                 return WERR_DS_SCHEMA_NOT_LOADED;
 734         }
 735
 736         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 737                 status = dsdb_origin_object_convert(ldb, schema, cur,
 738                                                     objects, &objects[i]);
 739                 if (!W_ERROR_IS_OK(status)) {
 740                         goto cancel;
 741                 }
 742         }
 743
 744         ids = talloc_array(mem_ctx,
 745                            struct drsuapi_DsReplicaObjectIdentifier2,
 746                            num_objects);
 747         if (ids == NULL) {
 748                 status = WERR_NOMEM;
 749                 goto cancel;
 750         }
 751
 752         if (dsdb_repl_flags & DSDB_REPL_FLAG_ADD_NCNAME) {
 753                 /* check for possible NC creation */
 754                 for (i=0; i < num_objects; i++) {
 755                         struct ldb_message *msg = objects[i];
 756                         struct ldb_message_element *el;
 757                         struct ldb_dn *nc_dn;
 758
 759                         if (ldb_msg_check_string_attribute(msg, "objectClass", "crossRef") == 0) {
 760                                 continue;
 761                         }
 762                         el = ldb_msg_find_element(msg, "nCName");
 763                         if (el == NULL || el->num_values != 1) {
 764                                 continue;
 765                         }
 766                         nc_dn = ldb_dn_from_ldb_val(objects, ldb, &el->values[0]);
 767                         if (!ldb_dn_validate(nc_dn)) {
 768                                 continue;
 769                         }
 770                         ret = dsdb_create_partial_replica_NC(ldb, nc_dn);
 771                         if (ret != LDB_SUCCESS) {
 772                                 status = WERR_DS_INTERNAL_FAILURE;
 773                                 goto cancel;
 774                         }
 775                 }
 776         }
 777
 778         for (i=0; i < num_objects; i++) {
 779                 struct dom_sid *sid = NULL;
 780                 struct ldb_request *add_req;
 781
 782                 DEBUG(6,(__location__ ": adding %s\n",
 783                          ldb_dn_get_linearized(objects[i]->dn)));
 784
 785                 ret = ldb_build_add_req(&add_req,
 786                                         ldb,
 787                                         objects,
 788                                         objects[i],
 789                                         NULL,
 790                                         NULL,
 791                                         ldb_op_default_callback,
 792                                         NULL);
 793                 if (ret != LDB_SUCCESS) {
 794                         status = WERR_DS_INTERNAL_FAILURE;
 795                         goto cancel;
 796                 }
 797
 798                 ret = ldb_request_add_control(add_req, LDB_CONTROL_RELAX_OID, true, NULL);
 799                 if (ret != LDB_SUCCESS) {
 800                         status = WERR_DS_INTERNAL_FAILURE;
 801                         goto cancel;
 802                 }
 803
 804                 ret = ldb_request(ldb, add_req);
 805                 if (ret == LDB_SUCCESS) {
 806                         ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
 807                 }
 808                 if (ret != LDB_SUCCESS) {
 809                         DEBUG(0,(__location__ ": Failed add of %s - %s\n",
 810                                  ldb_dn_get_linearized(objects[i]->dn), ldb_errstring(ldb)));
 811                         status = WERR_DS_INTERNAL_FAILURE;
 812                         goto cancel;
 813                 }
 814
 815                 talloc_free(add_req);
 816
 817                 ret = ldb_search(ldb, objects, &res, objects[i]->dn,
 818                                  LDB_SCOPE_BASE, attrs,
 819                                  "(objectClass=*)");
 820                 if (ret != LDB_SUCCESS) {
 821                         status = WERR_DS_INTERNAL_FAILURE;
 822                         goto cancel;
 823                 }
 824                 ids[i].guid = samdb_result_guid(res->msgs[0], "objectGUID");
 825                 sid = samdb_result_dom_sid(objects, res->msgs[0], "objectSid");
 826                 if (sid) {
 827                         ids[i].sid = *sid;
 828                 } else {
 829                         ZERO_STRUCT(ids[i].sid);
 830                 }
 831         }
 832
 833         ret = ldb_transaction_commit(ldb);
 834         if (ret != LDB_SUCCESS) {
 835                 return WERR_DS_INTERNAL_FAILURE;
 836         }
 837
 838         talloc_free(objects);
 839
 840         *_num = num_objects;
 841         *_ids = ids;
 842         return WERR_OK;
 843
 844 cancel:
 845         talloc_free(objects);
 846         ldb_transaction_cancel(ldb);
 847         return status;
 848 }