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         struct ldb_val parent_guid_value;
 207         NTTIME whenChanged = 0;
 208         time_t whenChanged_t;
 209         const char *whenChanged_s;
 210         const char *rdn_name = NULL;
 211         const struct ldb_val *rdn_value = NULL;
 212         const struct dsdb_attribute *rdn_attr = NULL;
 213         uint32_t rdn_attid;
 214         struct drsuapi_DsReplicaAttribute *name_a = NULL;
 215         struct drsuapi_DsReplicaMetaData *name_d = NULL;
 216         struct replPropertyMetaData1 *rdn_m = NULL;
 217         struct dom_sid *sid = NULL;
 218         uint32_t rid = 0;
 219         uint32_t attr_count;
 220         int ret;
 221
 222         if (!in->object.identifier) {
 223                 return WERR_FOOBAR;
 224         }
 225
 226         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 227                 return WERR_FOOBAR;
 228         }
 229
 230         if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
 231                 return WERR_FOOBAR;
 232         }
 233
 234         if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
 235                 return WERR_FOOBAR;
 236         }
 237
 238         sid = &in->object.identifier->sid;
 239         if (sid->num_auths > 0) {
 240                 rid = sid->sub_auths[sid->num_auths - 1];
 241         }
 242
 243         msg = ldb_msg_new(mem_ctx);
 244         W_ERROR_HAVE_NO_MEMORY(msg);
 245
 246         msg->dn                 = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 247         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 248
 249         rdn_name        = ldb_dn_get_rdn_name(msg->dn);
 250         rdn_attr        = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
 251         if (!rdn_attr) {
 252                 return WERR_FOOBAR;
 253         }
 254         rdn_attid       = rdn_attr->attributeID_id;
 255         rdn_value       = ldb_dn_get_rdn_val(msg->dn);
 256
 257         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 258         msg->elements           = talloc_array(msg, struct ldb_message_element,
 259                                                msg->num_elements);
 260         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 261
 262         md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
 263         W_ERROR_HAVE_NO_MEMORY(md);
 264
 265         md->version             = 1;
 266         md->reserved            = 0;
 267         md->ctr.ctr1.count      = in->meta_data_ctr->count;
 268         md->ctr.ctr1.reserved   = 0;
 269         md->ctr.ctr1.array      = talloc_array(mem_ctx,
 270                                                struct replPropertyMetaData1,
 271                                                md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
 272         W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
 273
 274         for (i=0, attr_count=0; i < in->meta_data_ctr->count; i++, attr_count++) {
 275                 struct drsuapi_DsReplicaAttribute *a;
 276                 struct drsuapi_DsReplicaMetaData *d;
 277                 struct replPropertyMetaData1 *m;
 278                 struct ldb_message_element *e;
 279                 uint32_t j;
 280
 281                 a = &in->object.attribute_ctr.attributes[i];
 282                 d = &in->meta_data_ctr->meta_data[i];
 283                 m = &md->ctr.ctr1.array[attr_count];
 284                 e = &msg->elements[attr_count];
 285
 286                 if (dsdb_attid_in_list(ignore_attids, a->attid)) {
 287                         attr_count--;
 288                         continue;
 289                 }
 290
 291                 for (j=0; j<a->value_ctr.num_values; j++) {
 292                         status = drsuapi_decrypt_attribute(a->value_ctr.values[j].blob, gensec_skey, rid, a);
 293                         W_ERROR_NOT_OK_RETURN(status);
 294                 }
 295
 296                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
 297                                                        a, msg->elements, e);
 298                 W_ERROR_NOT_OK_RETURN(status);
 299
 300                 m->attid                        = a->attid;
 301                 m->version                      = d->version;
 302                 m->originating_change_time      = d->originating_change_time;
 303                 m->originating_invocation_id    = d->originating_invocation_id;
 304                 m->originating_usn              = d->originating_usn;
 305                 m->local_usn                    = 0;
 306
 307                 if (d->originating_change_time > whenChanged) {
 308                         whenChanged = d->originating_change_time;
 309                 }
 310
 311                 if (a->attid == DRSUAPI_ATTID_name) {
 312                         name_a = a;
 313                         name_d = d;
 314                 }
 315         }
 316
 317         msg->num_elements = attr_count;
 318         md->ctr.ctr1.count = attr_count;
 319         if (name_a) {
 320                 rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
 321         }
 322
 323         if (rdn_m) {
 324                 struct ldb_message_element *el;
 325                 el = ldb_msg_find_element(msg, rdn_attr->lDAPDisplayName);
 326                 if (!el) {
 327                         ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
 328                         if (ret != LDB_SUCCESS) {
 329                                 return WERR_FOOBAR;
 330                         }
 331                 } else {
 332                         if (el->num_values != 1) {
 333                                 DEBUG(0,(__location__ ": Unexpected num_values=%u\n",
 334                                          el->num_values));
 335                                 return WERR_FOOBAR;
 336                         }
 337                         if (!ldb_val_equal_exact(&el->values[0], rdn_value)) {
 338                                 DEBUG(0,(__location__ ": RDN value changed? '%*.*s' '%*.*s'\n",
 339                                          (int)el->values[0].length, (int)el->values[0].length, el->values[0].data,
 340                                          (int)rdn_value->length, (int)rdn_value->length, rdn_value->data));
 341                                 return WERR_FOOBAR;
 342                         }
 343                 }
 344
 345                 rdn_m->attid                            = rdn_attid;
 346                 rdn_m->version                          = name_d->version;
 347                 rdn_m->originating_change_time          = name_d->originating_change_time;
 348                 rdn_m->originating_invocation_id        = name_d->originating_invocation_id;
 349                 rdn_m->originating_usn                  = name_d->originating_usn;
 350                 rdn_m->local_usn                        = 0;
 351                 md->ctr.ctr1.count++;
 352
 353         }
 354
 355         if (dsdb_repl_flags & DSDB_REPL_FLAG_PARTIAL_REPLICA) {
 356                 /* the instanceType type for partial_replica
 357                    replication is sent via DRS with TYPE_WRITE set, but
 358                    must be used on the client with TYPE_WRITE removed
 359                 */
 360                 int instanceType = ldb_msg_find_attr_as_int(msg, "instanceType", 0);
 361                 if (instanceType & INSTANCE_TYPE_WRITE) {
 362                         instanceType &= ~INSTANCE_TYPE_WRITE;
 363                         ldb_msg_remove_attr(msg, "instanceType");
 364                         if (ldb_msg_add_fmt(msg, "instanceType", "%d", instanceType) != LDB_SUCCESS) {
 365                                 return WERR_INTERNAL_ERROR;
 366                         }
 367                 }
 368         }
 369
 370         whenChanged_t = nt_time_to_unix(whenChanged);
 371         whenChanged_s = ldb_timestring(msg, whenChanged_t);
 372         W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
 373
 374         nt_status = GUID_to_ndr_blob(&in->object.identifier->guid, msg, &guid_value);
 375         if (!NT_STATUS_IS_OK(nt_status)) {
 376                 return ntstatus_to_werror(nt_status);
 377         }
 378
 379         if (in->parent_object_guid) {
 380                 nt_status = GUID_to_ndr_blob(in->parent_object_guid, msg, &parent_guid_value);
 381                 if (!NT_STATUS_IS_OK(nt_status)) {
 382                         return ntstatus_to_werror(nt_status);
 383                 }
 384         } else {
 385                 parent_guid_value = data_blob_null;
 386         }
 387
 388         out->msg                = msg;
 389         out->guid_value         = guid_value;
 390         out->parent_guid_value  = parent_guid_value;
 391         out->when_changed       = whenChanged_s;
 392         out->meta_data          = md;
 393         return WERR_OK;
 394 }
 395
 396 WERROR dsdb_replicated_objects_convert(struct ldb_context *ldb,
 397                                        const struct dsdb_schema *schema,
 398                                        const char *partition_dn_str,
 399                                        const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 400                                        uint32_t object_count,
 401                                        const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 402                                        uint32_t linked_attributes_count,
 403                                        const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
 404                                        const struct repsFromTo1 *source_dsa,
 405                                        const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
 406                                        const DATA_BLOB *gensec_skey,
 407                                        uint32_t dsdb_repl_flags,
 408                                        TALLOC_CTX *mem_ctx,
 409                                        struct dsdb_extended_replicated_objects **objects)
 410 {
 411         WERROR status;
 412         struct ldb_dn *partition_dn;
 413         struct dsdb_schema_prefixmap *pfm_remote;
 414         struct dsdb_extended_replicated_objects *out;
 415         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 416         uint32_t i;
 417
 418         out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
 419         W_ERROR_HAVE_NO_MEMORY(out);
 420         out->version            = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
 421         out->dsdb_repl_flags    = dsdb_repl_flags;
 422
 423         /*
 424          * Ensure schema is kept valid for as long as 'out'
 425          * which may contain pointers to it
 426          */
 427         schema = talloc_reference(out, schema);
 428         W_ERROR_HAVE_NO_MEMORY(schema);
 429
 430         partition_dn = ldb_dn_new(out, ldb, partition_dn_str);
 431         W_ERROR_HAVE_NO_MEMORY_AND_FREE(partition_dn, out);
 432
 433         status = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
 434                                                   out, &pfm_remote, NULL);
 435         if (!W_ERROR_IS_OK(status)) {
 436                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
 437                          win_errstr(status)));
 438                 talloc_free(out);
 439                 return status;
 440         }
 441
 442         if (ldb_dn_compare(partition_dn, ldb_get_schema_basedn(ldb)) != 0) {
 443                 /*
 444                  * check for schema changes in case
 445                  * we are not replicating Schema NC
 446                  */
 447                 status = dsdb_schema_info_cmp(schema, mapping_ctr);
 448                 if (!W_ERROR_IS_OK(status)) {
 449                         DEBUG(1,("Remote schema has changed while replicating %s\n",
 450                                  partition_dn_str));
 451                         talloc_free(out);
 452                         return status;
 453                 }
 454         }
 455
 456         out->partition_dn       = partition_dn;
 457
 458         out->source_dsa         = source_dsa;
 459         out->uptodateness_vector= uptodateness_vector;
 460
 461         out->num_objects        = object_count;
 462         out->objects            = talloc_array(out,
 463                                                struct dsdb_extended_replicated_object,
 464                                                out->num_objects);
 465         W_ERROR_HAVE_NO_MEMORY_AND_FREE(out->objects, out);
 466
 467         /* pass the linked attributes down to the repl_meta_data
 468            module */
 469         out->linked_attributes_count = linked_attributes_count;
 470         out->linked_attributes       = linked_attributes;
 471
 472         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 473                 if (i == out->num_objects) {
 474                         talloc_free(out);
 475                         return WERR_FOOBAR;
 476                 }
 477
 478                 status = dsdb_convert_object_ex(ldb, schema, pfm_remote,
 479                                                 cur, gensec_skey,
 480                                                 NULL,
 481                                                 dsdb_repl_flags,
 482                                                 out->objects, &out->objects[i]);
 483                 if (!W_ERROR_IS_OK(status)) {
 484                         talloc_free(out);
 485                         DEBUG(0,("Failed to convert object %s: %s\n",
 486                                  cur->object.identifier->dn,
 487                                  win_errstr(status)));
 488                         return status;
 489                 }
 490         }
 491         if (i != out->num_objects) {
 492                 talloc_free(out);
 493                 return WERR_FOOBAR;
 494         }
 495
 496         /* free pfm_remote, we won't need it anymore */
 497         talloc_free(pfm_remote);
 498
 499         *objects = out;
 500         return WERR_OK;
 501 }
 502
 503 /**
 504  * Commits a list of replicated objects.
 505  *
 506  * @param working_schema dsdb_schema to be used for resolving
 507  *                       Classes/Attributes during Schema replication. If not NULL,
 508  *                       it will be set on ldb and used while committing replicated objects
 509  */
 510 WERROR dsdb_replicated_objects_commit(struct ldb_context *ldb,
 511                                       struct dsdb_schema *working_schema,
 512                                       struct dsdb_extended_replicated_objects *objects,
 513                                       uint64_t *notify_uSN)
 514 {
 515         WERROR werr;
 516         struct ldb_result *ext_res;
 517         struct dsdb_schema *cur_schema = NULL;
 518         int ret;
 519         uint64_t seq_num1, seq_num2;
 520
 521         /* TODO: handle linked attributes */
 522
 523         /* wrap the extended operation in a transaction
 524            See [MS-DRSR] 3.3.2 Transactions
 525          */
 526         ret = ldb_transaction_start(ldb);
 527         if (ret != LDB_SUCCESS) {
 528                 DEBUG(0,(__location__ " Failed to start transaction\n"));
 529                 return WERR_FOOBAR;
 530         }
 531
 532         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num1, NULL);
 533         if (ret != LDB_SUCCESS) {
 534                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 535                 ldb_transaction_cancel(ldb);
 536                 return WERR_FOOBAR;
 537         }
 538
 539         /*
 540          * Set working_schema for ldb in case we are replicating from Schema NC.
 541          * Schema won't be reloaded during Replicated Objects commit, as it is
 542          * done in a transaction. So we need some way to search for newly
 543          * added Classes and Attributes
 544          */
 545         if (working_schema) {
 546                 /* store current schema so we can fall back in case of failure */
 547                 cur_schema = dsdb_get_schema(ldb, working_schema);
 548
 549                 ret = dsdb_reference_schema(ldb, working_schema, false);
 550                 if (ret != LDB_SUCCESS) {
 551                         DEBUG(0,(__location__ "Failed to reference working schema - %s\n",
 552                                  ldb_strerror(ret)));
 553                         /* TODO: Map LDB Error to NTSTATUS? */
 554                         ldb_transaction_cancel(ldb);
 555                         return WERR_INTERNAL_ERROR;
 556                 }
 557         }
 558
 559         ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, objects, &ext_res);
 560         if (ret != LDB_SUCCESS) {
 561                 /* restore previous schema */
 562                 if (cur_schema ) {
 563                         dsdb_reference_schema(ldb, cur_schema, false);
 564                         dsdb_make_schema_global(ldb, cur_schema);
 565                 }
 566
 567                 DEBUG(0,("Failed to apply records: %s: %s\n",
 568                          ldb_errstring(ldb), ldb_strerror(ret)));
 569                 ldb_transaction_cancel(ldb);
 570                 return WERR_FOOBAR;
 571         }
 572         talloc_free(ext_res);
 573
 574         /* Save our updated prefixMap */
 575         if (working_schema) {
 576                 werr = dsdb_write_prefixes_from_schema_to_ldb(working_schema,
 577                                                               ldb,
 578                                                               working_schema);
 579                 if (!W_ERROR_IS_OK(werr)) {
 580                         /* restore previous schema */
 581                         if (cur_schema ) {
 582                                 dsdb_reference_schema(ldb, cur_schema, false);
 583                                 dsdb_make_schema_global(ldb, cur_schema);
 584                         }
 585                         DEBUG(0,("Failed to save updated prefixMap: %s\n",
 586                                  win_errstr(werr)));
 587                         return werr;
 588                 }
 589         }
 590
 591         ret = ldb_transaction_prepare_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 prepare commit of transaction: %s\n",
 599                          ldb_errstring(ldb)));
 600                 return WERR_FOOBAR;
 601         }
 602
 603         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num2, NULL);
 604         if (ret != LDB_SUCCESS) {
 605                 /* restore previous schema */
 606                 if (cur_schema ) {
 607                         dsdb_reference_schema(ldb, cur_schema, false);
 608                         dsdb_make_schema_global(ldb, cur_schema);
 609                 }
 610                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 611                 ldb_transaction_cancel(ldb);
 612                 return WERR_FOOBAR;
 613         }
 614
 615         /* if this replication partner didn't need to be notified
 616            before this transaction then it still doesn't need to be
 617            notified, as the changes came from this server */
 618         if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) {
 619                 *notify_uSN = seq_num2;
 620         }
 621
 622         ret = ldb_transaction_commit(ldb);
 623         if (ret != LDB_SUCCESS) {
 624                 /* restore previous schema */
 625                 if (cur_schema ) {
 626                         dsdb_reference_schema(ldb, cur_schema, false);
 627                         dsdb_make_schema_global(ldb, cur_schema);
 628                 }
 629                 DEBUG(0,(__location__ " Failed to commit transaction\n"));
 630                 return WERR_FOOBAR;
 631         }
 632
 633         /*
 634          * Reset the Schema used by ldb. This will lead to
 635          * a schema cache being refreshed from database.
 636          */
 637         if (working_schema) {
 638                 struct ldb_message *msg;
 639                 struct ldb_request *req;
 640
 641                 /* Force a reload */
 642                 working_schema->last_refresh = 0;
 643                 cur_schema = dsdb_get_schema(ldb, NULL);
 644                 /* TODO: What we do in case dsdb_get_schema() fail?
 645                  *       We can't fallback at this point anymore */
 646                 if (cur_schema) {
 647                         dsdb_make_schema_global(ldb, cur_schema);
 648                 }
 649                 msg = ldb_msg_new(ldb);
 650                 if (msg == 0) {
 651                         return WERR_NOMEM;
 652                 }
 653                 msg->dn = NULL;
 654
 655                 ret = ldb_msg_add_string(msg, "schemaUpdateNow", "1");
 656                 if (ret != LDB_SUCCESS) {
 657                         talloc_free(msg);
 658                         return WERR_INTERNAL_ERROR;
 659                 }
 660
 661                 ret = ldb_build_mod_req(&req, ldb, ldb,
 662                                 msg,
 663                                 LDB_SCOPE_BASE,
 664                                 NULL,
 665                                 ldb_op_default_callback,
 666                                 NULL);
 667
 668                 if (ret != LDB_SUCCESS) {
 669                         talloc_free(msg);
 670                         return WERR_DS_DRA_INTERNAL_ERROR;
 671                 }
 672
 673                 ret = ldb_transaction_start(ldb);
 674                 if (ret != LDB_SUCCESS) {
 675                         talloc_free(msg);
 676                         talloc_free(req);
 677                         DEBUG(0, ("Autotransaction start failed\n"));
 678                         return WERR_DS_DRA_INTERNAL_ERROR;
 679                 }
 680
 681                 ret = ldb_request(ldb, req);
 682                 if (ret == LDB_SUCCESS) {
 683                         ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 684                 }
 685
 686                 if (ret == LDB_SUCCESS) {
 687                         ret = ldb_transaction_commit(ldb);
 688                 } else {
 689                         DEBUG(0, ("Schema update now failed: %s\n", ldb_strerror(ret)));
 690                         ldb_transaction_cancel(ldb);
 691                 }
 692
 693                 talloc_free(msg);
 694                 talloc_free(req);
 695                 if (ret != LDB_SUCCESS) {
 696                         DEBUG(0, ("Commit failed: %s\n", ldb_strerror(ret)));
 697                         return WERR_DS_INTERNAL_FAILURE;
 698                 }
 699         }
 700
 701         DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n",
 702                  objects->num_objects, objects->linked_attributes_count,
 703                  ldb_dn_get_linearized(objects->partition_dn)));
 704
 705         return WERR_OK;
 706 }
 707
 708 static WERROR dsdb_origin_object_convert(struct ldb_context *ldb,
 709                                          const struct dsdb_schema *schema,
 710                                          const struct drsuapi_DsReplicaObjectListItem *in,
 711                                          TALLOC_CTX *mem_ctx,
 712                                          struct ldb_message **_msg)
 713 {
 714         WERROR status;
 715         unsigned int i;
 716         struct ldb_message *msg;
 717
 718         if (!in->object.identifier) {
 719                 return WERR_FOOBAR;
 720         }
 721
 722         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 723                 return WERR_FOOBAR;
 724         }
 725
 726         msg = ldb_msg_new(mem_ctx);
 727         W_ERROR_HAVE_NO_MEMORY(msg);
 728
 729         msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 730         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 731
 732         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 733         msg->elements           = talloc_array(msg, struct ldb_message_element,
 734                                                msg->num_elements);
 735         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 736
 737         for (i=0; i < msg->num_elements; i++) {
 738                 struct drsuapi_DsReplicaAttribute *a;
 739                 struct ldb_message_element *e;
 740
 741                 a = &in->object.attribute_ctr.attributes[i];
 742                 e = &msg->elements[i];
 743
 744                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, schema->prefixmap,
 745                                                        a, msg->elements, e);
 746                 W_ERROR_NOT_OK_RETURN(status);
 747         }
 748
 749
 750         *_msg = msg;
 751
 752         return WERR_OK;
 753 }
 754
 755 WERROR dsdb_origin_objects_commit(struct ldb_context *ldb,
 756                                   TALLOC_CTX *mem_ctx,
 757                                   const struct drsuapi_DsReplicaObjectListItem *first_object,
 758                                   uint32_t *_num,
 759                                   uint32_t dsdb_repl_flags,
 760                                   struct drsuapi_DsReplicaObjectIdentifier2 **_ids)
 761 {
 762         WERROR status;
 763         const struct dsdb_schema *schema;
 764         const struct drsuapi_DsReplicaObjectListItem *cur;
 765         struct ldb_message **objects;
 766         struct drsuapi_DsReplicaObjectIdentifier2 *ids;
 767         uint32_t i;
 768         uint32_t num_objects = 0;
 769         const char * const attrs[] = {
 770                 "objectGUID",
 771                 "objectSid",
 772                 NULL
 773         };
 774         struct ldb_result *res;
 775         int ret;
 776
 777         for (cur = first_object; cur; cur = cur->next_object) {
 778                 num_objects++;
 779         }
 780
 781         if (num_objects == 0) {
 782                 return WERR_OK;
 783         }
 784
 785         ret = ldb_transaction_start(ldb);
 786         if (ret != LDB_SUCCESS) {
 787                 return WERR_DS_INTERNAL_FAILURE;
 788         }
 789
 790         objects = talloc_array(mem_ctx, struct ldb_message *,
 791                                num_objects);
 792         if (objects == NULL) {
 793                 status = WERR_NOMEM;
 794                 goto cancel;
 795         }
 796
 797         schema = dsdb_get_schema(ldb, objects);
 798         if (!schema) {
 799                 return WERR_DS_SCHEMA_NOT_LOADED;
 800         }
 801
 802         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 803                 status = dsdb_origin_object_convert(ldb, schema, cur,
 804                                                     objects, &objects[i]);
 805                 if (!W_ERROR_IS_OK(status)) {
 806                         goto cancel;
 807                 }
 808         }
 809
 810         ids = talloc_array(mem_ctx,
 811                            struct drsuapi_DsReplicaObjectIdentifier2,
 812                            num_objects);
 813         if (ids == NULL) {
 814                 status = WERR_NOMEM;
 815                 goto cancel;
 816         }
 817
 818         if (dsdb_repl_flags & DSDB_REPL_FLAG_ADD_NCNAME) {
 819                 /* check for possible NC creation */
 820                 for (i=0; i < num_objects; i++) {
 821                         struct ldb_message *msg = objects[i];
 822                         struct ldb_message_element *el;
 823                         struct ldb_dn *nc_dn;
 824
 825                         if (ldb_msg_check_string_attribute(msg, "objectClass", "crossRef") == 0) {
 826                                 continue;
 827                         }
 828                         el = ldb_msg_find_element(msg, "nCName");
 829                         if (el == NULL || el->num_values != 1) {
 830                                 continue;
 831                         }
 832                         nc_dn = ldb_dn_from_ldb_val(objects, ldb, &el->values[0]);
 833                         if (!ldb_dn_validate(nc_dn)) {
 834                                 continue;
 835                         }
 836                         ret = dsdb_create_partial_replica_NC(ldb, nc_dn);
 837                         if (ret != LDB_SUCCESS) {
 838                                 status = WERR_DS_INTERNAL_FAILURE;
 839                                 goto cancel;
 840                         }
 841                 }
 842         }
 843
 844         for (i=0; i < num_objects; i++) {
 845                 struct dom_sid *sid = NULL;
 846                 struct ldb_request *add_req;
 847
 848                 DEBUG(6,(__location__ ": adding %s\n",
 849                          ldb_dn_get_linearized(objects[i]->dn)));
 850
 851                 ret = ldb_build_add_req(&add_req,
 852                                         ldb,
 853                                         objects,
 854                                         objects[i],
 855                                         NULL,
 856                                         NULL,
 857                                         ldb_op_default_callback,
 858                                         NULL);
 859                 if (ret != LDB_SUCCESS) {
 860                         status = WERR_DS_INTERNAL_FAILURE;
 861                         goto cancel;
 862                 }
 863
 864                 ret = ldb_request_add_control(add_req, LDB_CONTROL_RELAX_OID, true, NULL);
 865                 if (ret != LDB_SUCCESS) {
 866                         status = WERR_DS_INTERNAL_FAILURE;
 867                         goto cancel;
 868                 }
 869
 870                 ret = ldb_request(ldb, add_req);
 871                 if (ret == LDB_SUCCESS) {
 872                         ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
 873                 }
 874                 if (ret != LDB_SUCCESS) {
 875                         DEBUG(0,(__location__ ": Failed add of %s - %s\n",
 876                                  ldb_dn_get_linearized(objects[i]->dn), ldb_errstring(ldb)));
 877                         status = WERR_DS_INTERNAL_FAILURE;
 878                         goto cancel;
 879                 }
 880
 881                 talloc_free(add_req);
 882
 883                 ret = ldb_search(ldb, objects, &res, objects[i]->dn,
 884                                  LDB_SCOPE_BASE, attrs,
 885                                  "(objectClass=*)");
 886                 if (ret != LDB_SUCCESS) {
 887                         status = WERR_DS_INTERNAL_FAILURE;
 888                         goto cancel;
 889                 }
 890                 ids[i].guid = samdb_result_guid(res->msgs[0], "objectGUID");
 891                 sid = samdb_result_dom_sid(objects, res->msgs[0], "objectSid");
 892                 if (sid) {
 893                         ids[i].sid = *sid;
 894                 } else {
 895                         ZERO_STRUCT(ids[i].sid);
 896                 }
 897         }
 898
 899         ret = ldb_transaction_commit(ldb);
 900         if (ret != LDB_SUCCESS) {
 901                 return WERR_DS_INTERNAL_FAILURE;
 902         }
 903
 904         talloc_free(objects);
 905
 906         *_num = num_objects;
 907         *_ids = ids;
 908         return WERR_OK;
 909
 910 cancel:
 911         talloc_free(objects);
 912         ldb_transaction_cancel(ldb);
 913         return status;
 914 }