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         int instanceType;
 206         struct ldb_val guid_value;
 207         struct ldb_val parent_guid_value;
 208         NTTIME whenChanged = 0;
 209         time_t whenChanged_t;
 210         const char *whenChanged_s;
 211         const char *rdn_name = NULL;
 212         const struct ldb_val *rdn_value = NULL;
 213         const struct dsdb_attribute *rdn_attr = NULL;
 214         uint32_t rdn_attid;
 215         struct drsuapi_DsReplicaAttribute *name_a = NULL;
 216         struct drsuapi_DsReplicaMetaData *name_d = NULL;
 217         struct replPropertyMetaData1 *rdn_m = NULL;
 218         struct dom_sid *sid = NULL;
 219         uint32_t rid = 0;
 220         uint32_t attr_count;
 221         int ret;
 222
 223         if (!in->object.identifier) {
 224                 return WERR_FOOBAR;
 225         }
 226
 227         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 228                 return WERR_FOOBAR;
 229         }
 230
 231         if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
 232                 return WERR_FOOBAR;
 233         }
 234
 235         if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
 236                 return WERR_FOOBAR;
 237         }
 238
 239         sid = &in->object.identifier->sid;
 240         if (sid->num_auths > 0) {
 241                 rid = sid->sub_auths[sid->num_auths - 1];
 242         }
 243
 244         msg = ldb_msg_new(mem_ctx);
 245         W_ERROR_HAVE_NO_MEMORY(msg);
 246
 247         msg->dn                 = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 248         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 249
 250         rdn_name        = ldb_dn_get_rdn_name(msg->dn);
 251         rdn_attr        = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
 252         if (!rdn_attr) {
 253                 return WERR_FOOBAR;
 254         }
 255         rdn_attid       = rdn_attr->attributeID_id;
 256         rdn_value       = ldb_dn_get_rdn_val(msg->dn);
 257
 258         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 259         msg->elements           = talloc_array(msg, struct ldb_message_element,
 260                                                msg->num_elements);
 261         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 262
 263         md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
 264         W_ERROR_HAVE_NO_MEMORY(md);
 265
 266         md->version             = 1;
 267         md->reserved            = 0;
 268         md->ctr.ctr1.count      = in->meta_data_ctr->count;
 269         md->ctr.ctr1.reserved   = 0;
 270         md->ctr.ctr1.array      = talloc_array(mem_ctx,
 271                                                struct replPropertyMetaData1,
 272                                                md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
 273         W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
 274
 275         for (i=0, attr_count=0; i < in->meta_data_ctr->count; i++, attr_count++) {
 276                 struct drsuapi_DsReplicaAttribute *a;
 277                 struct drsuapi_DsReplicaMetaData *d;
 278                 struct replPropertyMetaData1 *m;
 279                 struct ldb_message_element *e;
 280                 uint32_t j;
 281
 282                 a = &in->object.attribute_ctr.attributes[i];
 283                 d = &in->meta_data_ctr->meta_data[i];
 284                 m = &md->ctr.ctr1.array[attr_count];
 285                 e = &msg->elements[attr_count];
 286
 287                 if (dsdb_attid_in_list(ignore_attids, a->attid)) {
 288                         attr_count--;
 289                         continue;
 290                 }
 291
 292                 for (j=0; j<a->value_ctr.num_values; j++) {
 293                         status = drsuapi_decrypt_attribute(a->value_ctr.values[j].blob, gensec_skey, rid, a);
 294                         W_ERROR_NOT_OK_RETURN(status);
 295                 }
 296
 297                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
 298                                                        a, msg->elements, e);
 299                 W_ERROR_NOT_OK_RETURN(status);
 300
 301                 m->attid                        = a->attid;
 302                 m->version                      = d->version;
 303                 m->originating_change_time      = d->originating_change_time;
 304                 m->originating_invocation_id    = d->originating_invocation_id;
 305                 m->originating_usn              = d->originating_usn;
 306                 m->local_usn                    = 0;
 307
 308                 if (d->originating_change_time > whenChanged) {
 309                         whenChanged = d->originating_change_time;
 310                 }
 311
 312                 if (a->attid == DRSUAPI_ATTID_name) {
 313                         name_a = a;
 314                         name_d = d;
 315                 }
 316         }
 317
 318         msg->num_elements = attr_count;
 319         md->ctr.ctr1.count = attr_count;
 320         if (name_a) {
 321                 rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
 322         }
 323
 324         if (rdn_m) {
 325                 struct ldb_message_element *el;
 326                 el = ldb_msg_find_element(msg, rdn_attr->lDAPDisplayName);
 327                 if (!el) {
 328                         ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
 329                         if (ret != LDB_SUCCESS) {
 330                                 return WERR_FOOBAR;
 331                         }
 332                 } else {
 333                         if (el->num_values != 1) {
 334                                 DEBUG(0,(__location__ ": Unexpected num_values=%u\n",
 335                                          el->num_values));
 336                                 return WERR_FOOBAR;
 337                         }
 338                         if (!ldb_val_equal_exact(&el->values[0], rdn_value)) {
 339                                 DEBUG(0,(__location__ ": RDN value changed? '%*.*s' '%*.*s'\n",
 340                                          (int)el->values[0].length, (int)el->values[0].length, el->values[0].data,
 341                                          (int)rdn_value->length, (int)rdn_value->length, rdn_value->data));
 342                                 return WERR_FOOBAR;
 343                         }
 344                 }
 345
 346                 rdn_m->attid                            = rdn_attid;
 347                 rdn_m->version                          = name_d->version;
 348                 rdn_m->originating_change_time          = name_d->originating_change_time;
 349                 rdn_m->originating_invocation_id        = name_d->originating_invocation_id;
 350                 rdn_m->originating_usn                  = name_d->originating_usn;
 351                 rdn_m->local_usn                        = 0;
 352                 md->ctr.ctr1.count++;
 353
 354         }
 355
 356         instanceType = ldb_msg_find_attr_as_int(msg, "instanceType", 0);
 357         if (dsdb_repl_flags & DSDB_REPL_FLAG_PARTIAL_REPLICA) {
 358                 /* the instanceType type for partial_replica
 359                    replication is sent via DRS with TYPE_WRITE set, but
 360                    must be used on the client with TYPE_WRITE removed
 361                 */
 362                 if (instanceType & INSTANCE_TYPE_WRITE) {
 363                         instanceType &= ~INSTANCE_TYPE_WRITE;
 364                         ldb_msg_remove_attr(msg, "instanceType");
 365                         if (ldb_msg_add_fmt(msg, "instanceType", "%d", instanceType) != LDB_SUCCESS) {
 366                                 return WERR_INTERNAL_ERROR;
 367                         }
 368                 }
 369         } else {
 370                 if (!(instanceType & INSTANCE_TYPE_WRITE)) {
 371                         DEBUG(0, ("Refusing to replicate %s from a read-only repilca into a read-write replica!\n",
 372                                   ldb_dn_get_linearized(msg->dn)));
 373                         return WERR_DS_DRA_SOURCE_IS_PARTIAL_REPLICA;
 374                 }
 375         }
 376
 377         whenChanged_t = nt_time_to_unix(whenChanged);
 378         whenChanged_s = ldb_timestring(msg, whenChanged_t);
 379         W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
 380
 381         nt_status = GUID_to_ndr_blob(&in->object.identifier->guid, msg, &guid_value);
 382         if (!NT_STATUS_IS_OK(nt_status)) {
 383                 return ntstatus_to_werror(nt_status);
 384         }
 385
 386         if (in->parent_object_guid) {
 387                 nt_status = GUID_to_ndr_blob(in->parent_object_guid, msg, &parent_guid_value);
 388                 if (!NT_STATUS_IS_OK(nt_status)) {
 389                         return ntstatus_to_werror(nt_status);
 390                 }
 391         } else {
 392                 parent_guid_value = data_blob_null;
 393         }
 394
 395         out->msg                = msg;
 396         out->guid_value         = guid_value;
 397         out->parent_guid_value  = parent_guid_value;
 398         out->when_changed       = whenChanged_s;
 399         out->meta_data          = md;
 400         return WERR_OK;
 401 }
 402
 403 WERROR dsdb_replicated_objects_convert(struct ldb_context *ldb,
 404                                        const struct dsdb_schema *schema,
 405                                        const char *partition_dn_str,
 406                                        const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 407                                        uint32_t object_count,
 408                                        const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 409                                        uint32_t linked_attributes_count,
 410                                        const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
 411                                        const struct repsFromTo1 *source_dsa,
 412                                        const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
 413                                        const DATA_BLOB *gensec_skey,
 414                                        uint32_t dsdb_repl_flags,
 415                                        TALLOC_CTX *mem_ctx,
 416                                        struct dsdb_extended_replicated_objects **objects)
 417 {
 418         WERROR status;
 419         struct ldb_dn *partition_dn;
 420         struct dsdb_schema_prefixmap *pfm_remote;
 421         struct dsdb_extended_replicated_objects *out;
 422         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 423         uint32_t i;
 424
 425         out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
 426         W_ERROR_HAVE_NO_MEMORY(out);
 427         out->version            = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
 428         out->dsdb_repl_flags    = dsdb_repl_flags;
 429
 430         /*
 431          * Ensure schema is kept valid for as long as 'out'
 432          * which may contain pointers to it
 433          */
 434         schema = talloc_reference(out, schema);
 435         W_ERROR_HAVE_NO_MEMORY(schema);
 436
 437         partition_dn = ldb_dn_new(out, ldb, partition_dn_str);
 438         W_ERROR_HAVE_NO_MEMORY_AND_FREE(partition_dn, out);
 439
 440         status = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
 441                                                   out, &pfm_remote, NULL);
 442         if (!W_ERROR_IS_OK(status)) {
 443                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
 444                          win_errstr(status)));
 445                 talloc_free(out);
 446                 return status;
 447         }
 448
 449         if (ldb_dn_compare(partition_dn, ldb_get_schema_basedn(ldb)) != 0) {
 450                 /*
 451                  * check for schema changes in case
 452                  * we are not replicating Schema NC
 453                  */
 454                 status = dsdb_schema_info_cmp(schema, mapping_ctr);
 455                 if (!W_ERROR_IS_OK(status)) {
 456                         DEBUG(1,("Remote schema has changed while replicating %s\n",
 457                                  partition_dn_str));
 458                         talloc_free(out);
 459                         return status;
 460                 }
 461         }
 462
 463         out->partition_dn       = partition_dn;
 464
 465         out->source_dsa         = source_dsa;
 466         out->uptodateness_vector= uptodateness_vector;
 467
 468         out->num_objects        = object_count;
 469         out->objects            = talloc_array(out,
 470                                                struct dsdb_extended_replicated_object,
 471                                                out->num_objects);
 472         W_ERROR_HAVE_NO_MEMORY_AND_FREE(out->objects, out);
 473
 474         /* pass the linked attributes down to the repl_meta_data
 475            module */
 476         out->linked_attributes_count = linked_attributes_count;
 477         out->linked_attributes       = linked_attributes;
 478
 479         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 480                 if (i == out->num_objects) {
 481                         talloc_free(out);
 482                         return WERR_FOOBAR;
 483                 }
 484
 485                 status = dsdb_convert_object_ex(ldb, schema, pfm_remote,
 486                                                 cur, gensec_skey,
 487                                                 NULL,
 488                                                 dsdb_repl_flags,
 489                                                 out->objects, &out->objects[i]);
 490                 if (!W_ERROR_IS_OK(status)) {
 491                         talloc_free(out);
 492                         DEBUG(0,("Failed to convert object %s: %s\n",
 493                                  cur->object.identifier->dn,
 494                                  win_errstr(status)));
 495                         return status;
 496                 }
 497         }
 498         if (i != out->num_objects) {
 499                 talloc_free(out);
 500                 return WERR_FOOBAR;
 501         }
 502
 503         /* free pfm_remote, we won't need it anymore */
 504         talloc_free(pfm_remote);
 505
 506         *objects = out;
 507         return WERR_OK;
 508 }
 509
 510 /**
 511  * Commits a list of replicated objects.
 512  *
 513  * @param working_schema dsdb_schema to be used for resolving
 514  *                       Classes/Attributes during Schema replication. If not NULL,
 515  *                       it will be set on ldb and used while committing replicated objects
 516  */
 517 WERROR dsdb_replicated_objects_commit(struct ldb_context *ldb,
 518                                       struct dsdb_schema *working_schema,
 519                                       struct dsdb_extended_replicated_objects *objects,
 520                                       uint64_t *notify_uSN)
 521 {
 522         WERROR werr;
 523         struct ldb_result *ext_res;
 524         struct dsdb_schema *cur_schema = NULL;
 525         int ret;
 526         uint64_t seq_num1, seq_num2;
 527
 528         /* TODO: handle linked attributes */
 529
 530         /* wrap the extended operation in a transaction
 531            See [MS-DRSR] 3.3.2 Transactions
 532          */
 533         ret = ldb_transaction_start(ldb);
 534         if (ret != LDB_SUCCESS) {
 535                 DEBUG(0,(__location__ " Failed to start transaction\n"));
 536                 return WERR_FOOBAR;
 537         }
 538
 539         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num1, NULL);
 540         if (ret != LDB_SUCCESS) {
 541                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 542                 ldb_transaction_cancel(ldb);
 543                 return WERR_FOOBAR;
 544         }
 545
 546         /*
 547          * Set working_schema for ldb in case we are replicating from Schema NC.
 548          * Schema won't be reloaded during Replicated Objects commit, as it is
 549          * done in a transaction. So we need some way to search for newly
 550          * added Classes and Attributes
 551          */
 552         if (working_schema) {
 553                 /* store current schema so we can fall back in case of failure */
 554                 cur_schema = dsdb_get_schema(ldb, working_schema);
 555
 556                 ret = dsdb_reference_schema(ldb, working_schema, false);
 557                 if (ret != LDB_SUCCESS) {
 558                         DEBUG(0,(__location__ "Failed to reference working schema - %s\n",
 559                                  ldb_strerror(ret)));
 560                         /* TODO: Map LDB Error to NTSTATUS? */
 561                         ldb_transaction_cancel(ldb);
 562                         return WERR_INTERNAL_ERROR;
 563                 }
 564         }
 565
 566         ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, objects, &ext_res);
 567         if (ret != LDB_SUCCESS) {
 568                 /* restore previous schema */
 569                 if (cur_schema ) {
 570                         dsdb_reference_schema(ldb, cur_schema, false);
 571                         dsdb_make_schema_global(ldb, cur_schema);
 572                 }
 573
 574                 DEBUG(0,("Failed to apply records: %s: %s\n",
 575                          ldb_errstring(ldb), ldb_strerror(ret)));
 576                 ldb_transaction_cancel(ldb);
 577                 return WERR_FOOBAR;
 578         }
 579         talloc_free(ext_res);
 580
 581         /* Save our updated prefixMap */
 582         if (working_schema) {
 583                 werr = dsdb_write_prefixes_from_schema_to_ldb(working_schema,
 584                                                               ldb,
 585                                                               working_schema);
 586                 if (!W_ERROR_IS_OK(werr)) {
 587                         /* restore previous schema */
 588                         if (cur_schema ) {
 589                                 dsdb_reference_schema(ldb, cur_schema, false);
 590                                 dsdb_make_schema_global(ldb, cur_schema);
 591                         }
 592                         DEBUG(0,("Failed to save updated prefixMap: %s\n",
 593                                  win_errstr(werr)));
 594                         return werr;
 595                 }
 596         }
 597
 598         ret = ldb_transaction_prepare_commit(ldb);
 599         if (ret != LDB_SUCCESS) {
 600                 /* restore previous schema */
 601                 if (cur_schema ) {
 602                         dsdb_reference_schema(ldb, cur_schema, false);
 603                         dsdb_make_schema_global(ldb, cur_schema);
 604                 }
 605                 DEBUG(0,(__location__ " Failed to prepare commit of transaction: %s\n",
 606                          ldb_errstring(ldb)));
 607                 return WERR_FOOBAR;
 608         }
 609
 610         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num2, NULL);
 611         if (ret != LDB_SUCCESS) {
 612                 /* restore previous schema */
 613                 if (cur_schema ) {
 614                         dsdb_reference_schema(ldb, cur_schema, false);
 615                         dsdb_make_schema_global(ldb, cur_schema);
 616                 }
 617                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 618                 ldb_transaction_cancel(ldb);
 619                 return WERR_FOOBAR;
 620         }
 621
 622         /* if this replication partner didn't need to be notified
 623            before this transaction then it still doesn't need to be
 624            notified, as the changes came from this server */
 625         if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) {
 626                 *notify_uSN = seq_num2;
 627         }
 628
 629         ret = ldb_transaction_commit(ldb);
 630         if (ret != LDB_SUCCESS) {
 631                 /* restore previous schema */
 632                 if (cur_schema ) {
 633                         dsdb_reference_schema(ldb, cur_schema, false);
 634                         dsdb_make_schema_global(ldb, cur_schema);
 635                 }
 636                 DEBUG(0,(__location__ " Failed to commit transaction\n"));
 637                 return WERR_FOOBAR;
 638         }
 639
 640         /*
 641          * Reset the Schema used by ldb. This will lead to
 642          * a schema cache being refreshed from database.
 643          */
 644         if (working_schema) {
 645                 struct ldb_message *msg;
 646                 struct ldb_request *req;
 647
 648                 /* Force a reload */
 649                 working_schema->last_refresh = 0;
 650                 cur_schema = dsdb_get_schema(ldb, NULL);
 651                 /* TODO: What we do in case dsdb_get_schema() fail?
 652                  *       We can't fallback at this point anymore */
 653                 if (cur_schema) {
 654                         dsdb_make_schema_global(ldb, cur_schema);
 655                 }
 656                 msg = ldb_msg_new(ldb);
 657                 if (msg == NULL) {
 658                         return WERR_NOMEM;
 659                 }
 660                 msg->dn = ldb_dn_new(msg, ldb, "");
 661                 if (msg->dn == NULL) {
 662                         talloc_free(msg);
 663                         return WERR_NOMEM;
 664                 }
 665
 666                 ret = ldb_msg_add_string(msg, "schemaUpdateNow", "1");
 667                 if (ret != LDB_SUCCESS) {
 668                         talloc_free(msg);
 669                         return WERR_INTERNAL_ERROR;
 670                 }
 671
 672                 ret = ldb_build_mod_req(&req, ldb, ldb,
 673                                 msg,
 674                                 LDB_SCOPE_BASE,
 675                                 NULL,
 676                                 ldb_op_default_callback,
 677                                 NULL);
 678
 679                 if (ret != LDB_SUCCESS) {
 680                         talloc_free(msg);
 681                         return WERR_DS_DRA_INTERNAL_ERROR;
 682                 }
 683
 684                 ret = ldb_transaction_start(ldb);
 685                 if (ret != LDB_SUCCESS) {
 686                         talloc_free(msg);
 687                         talloc_free(req);
 688                         DEBUG(0, ("Autotransaction start failed\n"));
 689                         return WERR_DS_DRA_INTERNAL_ERROR;
 690                 }
 691
 692                 ret = ldb_request(ldb, req);
 693                 if (ret == LDB_SUCCESS) {
 694                         ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 695                 }
 696
 697                 if (ret == LDB_SUCCESS) {
 698                         ret = ldb_transaction_commit(ldb);
 699                 } else {
 700                         DEBUG(0, ("Schema update now failed: %s\n", ldb_strerror(ret)));
 701                         ldb_transaction_cancel(ldb);
 702                 }
 703
 704                 talloc_free(msg);
 705                 talloc_free(req);
 706                 if (ret != LDB_SUCCESS) {
 707                         DEBUG(0, ("Commit failed: %s\n", ldb_strerror(ret)));
 708                         return WERR_DS_INTERNAL_FAILURE;
 709                 }
 710         }
 711
 712         DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n",
 713                  objects->num_objects, objects->linked_attributes_count,
 714                  ldb_dn_get_linearized(objects->partition_dn)));
 715
 716         return WERR_OK;
 717 }
 718
 719 static WERROR dsdb_origin_object_convert(struct ldb_context *ldb,
 720                                          const struct dsdb_schema *schema,
 721                                          const struct drsuapi_DsReplicaObjectListItem *in,
 722                                          TALLOC_CTX *mem_ctx,
 723                                          struct ldb_message **_msg)
 724 {
 725         WERROR status;
 726         unsigned int i;
 727         struct ldb_message *msg;
 728
 729         if (!in->object.identifier) {
 730                 return WERR_FOOBAR;
 731         }
 732
 733         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 734                 return WERR_FOOBAR;
 735         }
 736
 737         msg = ldb_msg_new(mem_ctx);
 738         W_ERROR_HAVE_NO_MEMORY(msg);
 739
 740         msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 741         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 742
 743         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 744         msg->elements           = talloc_array(msg, struct ldb_message_element,
 745                                                msg->num_elements);
 746         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 747
 748         for (i=0; i < msg->num_elements; i++) {
 749                 struct drsuapi_DsReplicaAttribute *a;
 750                 struct ldb_message_element *e;
 751
 752                 a = &in->object.attribute_ctr.attributes[i];
 753                 e = &msg->elements[i];
 754
 755                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, schema->prefixmap,
 756                                                        a, msg->elements, e);
 757                 W_ERROR_NOT_OK_RETURN(status);
 758         }
 759
 760
 761         *_msg = msg;
 762
 763         return WERR_OK;
 764 }
 765
 766 WERROR dsdb_origin_objects_commit(struct ldb_context *ldb,
 767                                   TALLOC_CTX *mem_ctx,
 768                                   const struct drsuapi_DsReplicaObjectListItem *first_object,
 769                                   uint32_t *_num,
 770                                   uint32_t dsdb_repl_flags,
 771                                   struct drsuapi_DsReplicaObjectIdentifier2 **_ids)
 772 {
 773         WERROR status;
 774         const struct dsdb_schema *schema;
 775         const struct drsuapi_DsReplicaObjectListItem *cur;
 776         struct ldb_message **objects;
 777         struct drsuapi_DsReplicaObjectIdentifier2 *ids;
 778         uint32_t i;
 779         uint32_t num_objects = 0;
 780         const char * const attrs[] = {
 781                 "objectGUID",
 782                 "objectSid",
 783                 NULL
 784         };
 785         struct ldb_result *res;
 786         int ret;
 787
 788         for (cur = first_object; cur; cur = cur->next_object) {
 789                 num_objects++;
 790         }
 791
 792         if (num_objects == 0) {
 793                 return WERR_OK;
 794         }
 795
 796         ret = ldb_transaction_start(ldb);
 797         if (ret != LDB_SUCCESS) {
 798                 return WERR_DS_INTERNAL_FAILURE;
 799         }
 800
 801         objects = talloc_array(mem_ctx, struct ldb_message *,
 802                                num_objects);
 803         if (objects == NULL) {
 804                 status = WERR_NOMEM;
 805                 goto cancel;
 806         }
 807
 808         schema = dsdb_get_schema(ldb, objects);
 809         if (!schema) {
 810                 return WERR_DS_SCHEMA_NOT_LOADED;
 811         }
 812
 813         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 814                 status = dsdb_origin_object_convert(ldb, schema, cur,
 815                                                     objects, &objects[i]);
 816                 if (!W_ERROR_IS_OK(status)) {
 817                         goto cancel;
 818                 }
 819         }
 820
 821         ids = talloc_array(mem_ctx,
 822                            struct drsuapi_DsReplicaObjectIdentifier2,
 823                            num_objects);
 824         if (ids == NULL) {
 825                 status = WERR_NOMEM;
 826                 goto cancel;
 827         }
 828
 829         if (dsdb_repl_flags & DSDB_REPL_FLAG_ADD_NCNAME) {
 830                 /* check for possible NC creation */
 831                 for (i=0; i < num_objects; i++) {
 832                         struct ldb_message *msg = objects[i];
 833                         struct ldb_message_element *el;
 834                         struct ldb_dn *nc_dn;
 835
 836                         if (ldb_msg_check_string_attribute(msg, "objectClass", "crossRef") == 0) {
 837                                 continue;
 838                         }
 839                         el = ldb_msg_find_element(msg, "nCName");
 840                         if (el == NULL || el->num_values != 1) {
 841                                 continue;
 842                         }
 843                         nc_dn = ldb_dn_from_ldb_val(objects, ldb, &el->values[0]);
 844                         if (!ldb_dn_validate(nc_dn)) {
 845                                 continue;
 846                         }
 847                         ret = dsdb_create_partial_replica_NC(ldb, nc_dn);
 848                         if (ret != LDB_SUCCESS) {
 849                                 status = WERR_DS_INTERNAL_FAILURE;
 850                                 goto cancel;
 851                         }
 852                 }
 853         }
 854
 855         for (i=0; i < num_objects; i++) {
 856                 struct dom_sid *sid = NULL;
 857                 struct ldb_request *add_req;
 858
 859                 DEBUG(6,(__location__ ": adding %s\n",
 860                          ldb_dn_get_linearized(objects[i]->dn)));
 861
 862                 ret = ldb_build_add_req(&add_req,
 863                                         ldb,
 864                                         objects,
 865                                         objects[i],
 866                                         NULL,
 867                                         NULL,
 868                                         ldb_op_default_callback,
 869                                         NULL);
 870                 if (ret != LDB_SUCCESS) {
 871                         status = WERR_DS_INTERNAL_FAILURE;
 872                         goto cancel;
 873                 }
 874
 875                 ret = ldb_request_add_control(add_req, LDB_CONTROL_RELAX_OID, true, NULL);
 876                 if (ret != LDB_SUCCESS) {
 877                         status = WERR_DS_INTERNAL_FAILURE;
 878                         goto cancel;
 879                 }
 880
 881                 ret = ldb_request(ldb, add_req);
 882                 if (ret == LDB_SUCCESS) {
 883                         ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
 884                 }
 885                 if (ret != LDB_SUCCESS) {
 886                         DEBUG(0,(__location__ ": Failed add of %s - %s\n",
 887                                  ldb_dn_get_linearized(objects[i]->dn), ldb_errstring(ldb)));
 888                         status = WERR_DS_INTERNAL_FAILURE;
 889                         goto cancel;
 890                 }
 891
 892                 talloc_free(add_req);
 893
 894                 ret = ldb_search(ldb, objects, &res, objects[i]->dn,
 895                                  LDB_SCOPE_BASE, attrs,
 896                                  "(objectClass=*)");
 897                 if (ret != LDB_SUCCESS) {
 898                         status = WERR_DS_INTERNAL_FAILURE;
 899                         goto cancel;
 900                 }
 901                 ids[i].guid = samdb_result_guid(res->msgs[0], "objectGUID");
 902                 sid = samdb_result_dom_sid(objects, res->msgs[0], "objectSid");
 903                 if (sid) {
 904                         ids[i].sid = *sid;
 905                 } else {
 906                         ZERO_STRUCT(ids[i].sid);
 907                 }
 908         }
 909
 910         ret = ldb_transaction_commit(ldb);
 911         if (ret != LDB_SUCCESS) {
 912                 return WERR_DS_INTERNAL_FAILURE;
 913         }
 914
 915         talloc_free(objects);
 916
 917         *_num = num_objects;
 918         *_ids = ids;
 919         return WERR_OK;
 920
 921 cancel:
 922         talloc_free(objects);
 923         ldb_transaction_cancel(ldb);
 924         return status;
 925 }