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: converted %d, %d of %d objects left to be converted.\n",
 154                          pass_no, converted_obj_count, failed_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_message_element *instanceType_e = NULL;
 207         struct ldb_val guid_value;
 208         struct ldb_val parent_guid_value;
 209         NTTIME whenChanged = 0;
 210         time_t whenChanged_t;
 211         const char *whenChanged_s;
 212         struct drsuapi_DsReplicaAttribute *name_a = NULL;
 213         struct drsuapi_DsReplicaMetaData *name_d = NULL;
 214         struct replPropertyMetaData1 *rdn_m = NULL;
 215         struct dom_sid *sid = NULL;
 216         uint32_t rid = 0;
 217         uint32_t attr_count;
 218         int ret;
 219
 220         if (!in->object.identifier) {
 221                 return WERR_FOOBAR;
 222         }
 223
 224         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 225                 return WERR_FOOBAR;
 226         }
 227
 228         if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
 229                 return WERR_FOOBAR;
 230         }
 231
 232         if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
 233                 return WERR_FOOBAR;
 234         }
 235
 236         sid = &in->object.identifier->sid;
 237         if (sid->num_auths > 0) {
 238                 rid = sid->sub_auths[sid->num_auths - 1];
 239         }
 240
 241         msg = ldb_msg_new(mem_ctx);
 242         W_ERROR_HAVE_NO_MEMORY(msg);
 243
 244         msg->dn                 = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 245         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 246
 247         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 248         msg->elements           = talloc_array(msg, struct ldb_message_element,
 249                                                msg->num_elements + 1); /* +1 because of the RDN attribute */
 250         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 251
 252         md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
 253         W_ERROR_HAVE_NO_MEMORY(md);
 254
 255         md->version             = 1;
 256         md->reserved            = 0;
 257         md->ctr.ctr1.count      = in->meta_data_ctr->count;
 258         md->ctr.ctr1.reserved   = 0;
 259         md->ctr.ctr1.array      = talloc_array(mem_ctx,
 260                                                struct replPropertyMetaData1,
 261                                                md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
 262         W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
 263
 264         for (i=0, attr_count=0; i < in->meta_data_ctr->count; i++, attr_count++) {
 265                 struct drsuapi_DsReplicaAttribute *a;
 266                 struct drsuapi_DsReplicaMetaData *d;
 267                 struct replPropertyMetaData1 *m;
 268                 struct ldb_message_element *e;
 269                 uint32_t j;
 270
 271                 a = &in->object.attribute_ctr.attributes[i];
 272                 d = &in->meta_data_ctr->meta_data[i];
 273                 m = &md->ctr.ctr1.array[attr_count];
 274                 e = &msg->elements[attr_count];
 275
 276                 if (dsdb_attid_in_list(ignore_attids, a->attid)) {
 277                         attr_count--;
 278                         continue;
 279                 }
 280
 281                 if (a->attid == DRSUAPI_ATTID_instanceType) {
 282                         if (instanceType_e != NULL) {
 283                                 return WERR_FOOBAR;
 284                         }
 285                         instanceType_e = e;
 286                 }
 287
 288                 for (j=0; j<a->value_ctr.num_values; j++) {
 289                         status = drsuapi_decrypt_attribute(a->value_ctr.values[j].blob, gensec_skey, rid, a);
 290                         W_ERROR_NOT_OK_RETURN(status);
 291                 }
 292
 293                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
 294                                                        a, msg->elements, e);
 295                 W_ERROR_NOT_OK_RETURN(status);
 296
 297                 m->attid                        = a->attid;
 298                 m->version                      = d->version;
 299                 m->originating_change_time      = d->originating_change_time;
 300                 m->originating_invocation_id    = d->originating_invocation_id;
 301                 m->originating_usn              = d->originating_usn;
 302                 m->local_usn                    = 0;
 303
 304                 if (d->originating_change_time > whenChanged) {
 305                         whenChanged = d->originating_change_time;
 306                 }
 307
 308                 if (a->attid == DRSUAPI_ATTID_name) {
 309                         name_a = a;
 310                         name_d = d;
 311                 }
 312         }
 313
 314         msg->num_elements = attr_count;
 315         md->ctr.ctr1.count = attr_count;
 316         if (name_a) {
 317                 rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
 318         }
 319
 320         if (rdn_m) {
 321                 struct ldb_message_element *el;
 322                 const char *rdn_name = NULL;
 323                 const struct ldb_val *rdn_value = NULL;
 324                 const struct dsdb_attribute *rdn_attr = NULL;
 325                 uint32_t rdn_attid;
 326
 327                 /*
 328                  * We only need the schema calls for the RDN in this
 329                  * codepath, and by doing this we avoid needing to
 330                  * have the dsdb_attribute_by_lDAPDisplayName accessor
 331                  * working during the schema load.
 332                  */
 333                 rdn_name        = ldb_dn_get_rdn_name(msg->dn);
 334                 rdn_attr        = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
 335                 if (!rdn_attr) {
 336                         return WERR_FOOBAR;
 337                 }
 338                 rdn_attid       = rdn_attr->attributeID_id;
 339                 rdn_value       = ldb_dn_get_rdn_val(msg->dn);
 340
 341                 el = ldb_msg_find_element(msg, rdn_attr->lDAPDisplayName);
 342                 if (!el) {
 343                         ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
 344                         if (ret != LDB_SUCCESS) {
 345                                 return WERR_FOOBAR;
 346                         }
 347                 } else {
 348                         if (el->num_values != 1) {
 349                                 DEBUG(0,(__location__ ": Unexpected num_values=%u\n",
 350                                          el->num_values));
 351                                 return WERR_FOOBAR;
 352                         }
 353                         if (!ldb_val_equal_exact(&el->values[0], rdn_value)) {
 354                                 DEBUG(0,(__location__ ": RDN value changed? '%*.*s' '%*.*s'\n",
 355                                          (int)el->values[0].length, (int)el->values[0].length, el->values[0].data,
 356                                          (int)rdn_value->length, (int)rdn_value->length, rdn_value->data));
 357                                 return WERR_FOOBAR;
 358                         }
 359                 }
 360
 361                 rdn_m->attid                            = rdn_attid;
 362                 rdn_m->version                          = name_d->version;
 363                 rdn_m->originating_change_time          = name_d->originating_change_time;
 364                 rdn_m->originating_invocation_id        = name_d->originating_invocation_id;
 365                 rdn_m->originating_usn                  = name_d->originating_usn;
 366                 rdn_m->local_usn                        = 0;
 367                 md->ctr.ctr1.count++;
 368
 369         }
 370
 371         if (instanceType_e == NULL) {
 372                 return WERR_FOOBAR;
 373         }
 374
 375         instanceType = ldb_msg_find_attr_as_int(msg, "instanceType", 0);
 376         if (dsdb_repl_flags & DSDB_REPL_FLAG_PARTIAL_REPLICA) {
 377                 /* the instanceType type for partial_replica
 378                    replication is sent via DRS with TYPE_WRITE set, but
 379                    must be used on the client with TYPE_WRITE removed
 380                 */
 381                 if (instanceType & INSTANCE_TYPE_WRITE) {
 382                         /*
 383                          * Make sure we do not change the order
 384                          * of msg->elements!
 385                          *
 386                          * That's why we use
 387                          * instanceType_e->num_values = 0
 388                          * instead of
 389                          * ldb_msg_remove_attr(msg, "instanceType");
 390                          */
 391                         struct ldb_message_element *e;
 392
 393                         e = ldb_msg_find_element(msg, "instanceType");
 394                         if (e != instanceType_e) {
 395                                 DEBUG(0,("instanceType_e[%p] changed to e[%p]\n",
 396                                          instanceType_e, e));
 397                                 return WERR_FOOBAR;
 398                         }
 399
 400                         instanceType_e->num_values = 0;
 401
 402                         instanceType &= ~INSTANCE_TYPE_WRITE;
 403                         if (ldb_msg_add_fmt(msg, "instanceType", "%d", instanceType) != LDB_SUCCESS) {
 404                                 return WERR_INTERNAL_ERROR;
 405                         }
 406                 }
 407         } else {
 408                 if (!(instanceType & INSTANCE_TYPE_WRITE)) {
 409                         DEBUG(0, ("Refusing to replicate %s from a read-only repilca into a read-write replica!\n",
 410                                   ldb_dn_get_linearized(msg->dn)));
 411                         return WERR_DS_DRA_SOURCE_IS_PARTIAL_REPLICA;
 412                 }
 413         }
 414
 415         whenChanged_t = nt_time_to_unix(whenChanged);
 416         whenChanged_s = ldb_timestring(msg, whenChanged_t);
 417         W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
 418
 419         nt_status = GUID_to_ndr_blob(&in->object.identifier->guid, msg, &guid_value);
 420         if (!NT_STATUS_IS_OK(nt_status)) {
 421                 return ntstatus_to_werror(nt_status);
 422         }
 423
 424         if (in->parent_object_guid) {
 425                 nt_status = GUID_to_ndr_blob(in->parent_object_guid, msg, &parent_guid_value);
 426                 if (!NT_STATUS_IS_OK(nt_status)) {
 427                         return ntstatus_to_werror(nt_status);
 428                 }
 429         } else {
 430                 parent_guid_value = data_blob_null;
 431         }
 432
 433         out->msg                = msg;
 434         out->guid_value         = guid_value;
 435         out->parent_guid_value  = parent_guid_value;
 436         out->when_changed       = whenChanged_s;
 437         out->meta_data          = md;
 438         return WERR_OK;
 439 }
 440
 441 WERROR dsdb_replicated_objects_convert(struct ldb_context *ldb,
 442                                        const struct dsdb_schema *schema,
 443                                        const char *partition_dn_str,
 444                                        const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 445                                        uint32_t object_count,
 446                                        const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 447                                        uint32_t linked_attributes_count,
 448                                        const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
 449                                        const struct repsFromTo1 *source_dsa,
 450                                        const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
 451                                        const DATA_BLOB *gensec_skey,
 452                                        uint32_t dsdb_repl_flags,
 453                                        TALLOC_CTX *mem_ctx,
 454                                        struct dsdb_extended_replicated_objects **objects)
 455 {
 456         WERROR status;
 457         struct ldb_dn *partition_dn;
 458         struct dsdb_schema_prefixmap *pfm_remote;
 459         struct dsdb_extended_replicated_objects *out;
 460         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 461         uint32_t i;
 462
 463         out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
 464         W_ERROR_HAVE_NO_MEMORY(out);
 465         out->version            = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
 466         out->dsdb_repl_flags    = dsdb_repl_flags;
 467
 468         /*
 469          * Ensure schema is kept valid for as long as 'out'
 470          * which may contain pointers to it
 471          */
 472         schema = talloc_reference(out, schema);
 473         W_ERROR_HAVE_NO_MEMORY(schema);
 474
 475         partition_dn = ldb_dn_new(out, ldb, partition_dn_str);
 476         W_ERROR_HAVE_NO_MEMORY_AND_FREE(partition_dn, out);
 477
 478         status = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
 479                                                   out, &pfm_remote, NULL);
 480         if (!W_ERROR_IS_OK(status)) {
 481                 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
 482                          win_errstr(status)));
 483                 talloc_free(out);
 484                 return status;
 485         }
 486
 487         if (ldb_dn_compare(partition_dn, ldb_get_schema_basedn(ldb)) != 0) {
 488                 /*
 489                  * check for schema changes in case
 490                  * we are not replicating Schema NC
 491                  */
 492                 status = dsdb_schema_info_cmp(schema, mapping_ctr);
 493                 if (!W_ERROR_IS_OK(status)) {
 494                         DEBUG(1,("Remote schema has changed while replicating %s\n",
 495                                  partition_dn_str));
 496                         talloc_free(out);
 497                         return status;
 498                 }
 499         }
 500
 501         out->partition_dn       = partition_dn;
 502
 503         out->source_dsa         = source_dsa;
 504         out->uptodateness_vector= uptodateness_vector;
 505
 506         out->num_objects        = object_count;
 507         out->objects            = talloc_array(out,
 508                                                struct dsdb_extended_replicated_object,
 509                                                out->num_objects);
 510         W_ERROR_HAVE_NO_MEMORY_AND_FREE(out->objects, out);
 511
 512         /* pass the linked attributes down to the repl_meta_data
 513            module */
 514         out->linked_attributes_count = linked_attributes_count;
 515         out->linked_attributes       = linked_attributes;
 516
 517         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 518                 if (i == out->num_objects) {
 519                         talloc_free(out);
 520                         return WERR_FOOBAR;
 521                 }
 522
 523                 status = dsdb_convert_object_ex(ldb, schema, pfm_remote,
 524                                                 cur, gensec_skey,
 525                                                 NULL,
 526                                                 dsdb_repl_flags,
 527                                                 out->objects, &out->objects[i]);
 528                 if (!W_ERROR_IS_OK(status)) {
 529                         talloc_free(out);
 530                         DEBUG(0,("Failed to convert object %s: %s\n",
 531                                  cur->object.identifier->dn,
 532                                  win_errstr(status)));
 533                         return status;
 534                 }
 535         }
 536         if (i != out->num_objects) {
 537                 talloc_free(out);
 538                 return WERR_FOOBAR;
 539         }
 540
 541         /* free pfm_remote, we won't need it anymore */
 542         talloc_free(pfm_remote);
 543
 544         *objects = out;
 545         return WERR_OK;
 546 }
 547
 548 /**
 549  * Commits a list of replicated objects.
 550  *
 551  * @param working_schema dsdb_schema to be used for resolving
 552  *                       Classes/Attributes during Schema replication. If not NULL,
 553  *                       it will be set on ldb and used while committing replicated objects
 554  */
 555 WERROR dsdb_replicated_objects_commit(struct ldb_context *ldb,
 556                                       struct dsdb_schema *working_schema,
 557                                       struct dsdb_extended_replicated_objects *objects,
 558                                       uint64_t *notify_uSN)
 559 {
 560         WERROR werr;
 561         struct ldb_result *ext_res;
 562         struct dsdb_schema *cur_schema = NULL;
 563         struct dsdb_schema *new_schema = NULL;
 564         int ret;
 565         uint64_t seq_num1, seq_num2;
 566         bool used_global_schema = false;
 567
 568         TALLOC_CTX *tmp_ctx = talloc_new(objects);
 569         if (!tmp_ctx) {
 570                 DEBUG(0,("Failed to start talloc\n"));
 571                 return WERR_NOMEM;
 572         }
 573
 574         /* TODO: handle linked attributes */
 575
 576         /* wrap the extended operation in a transaction
 577            See [MS-DRSR] 3.3.2 Transactions
 578          */
 579         ret = ldb_transaction_start(ldb);
 580         if (ret != LDB_SUCCESS) {
 581                 DEBUG(0,(__location__ " Failed to start transaction\n"));
 582                 return WERR_FOOBAR;
 583         }
 584
 585         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num1, NULL);
 586         if (ret != LDB_SUCCESS) {
 587                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 588                 ldb_transaction_cancel(ldb);
 589                 TALLOC_FREE(tmp_ctx);
 590                 return WERR_FOOBAR;
 591         }
 592
 593         /*
 594          * Set working_schema for ldb in case we are replicating from Schema NC.
 595          * Schema won't be reloaded during Replicated Objects commit, as it is
 596          * done in a transaction. So we need some way to search for newly
 597          * added Classes and Attributes
 598          */
 599         if (working_schema) {
 600                 /* store current schema so we can fall back in case of failure */
 601                 cur_schema = dsdb_get_schema(ldb, tmp_ctx);
 602                 used_global_schema = dsdb_uses_global_schema(ldb);
 603
 604                 ret = dsdb_reference_schema(ldb, working_schema, false);
 605                 if (ret != LDB_SUCCESS) {
 606                         DEBUG(0,(__location__ "Failed to reference working schema - %s\n",
 607                                  ldb_strerror(ret)));
 608                         /* TODO: Map LDB Error to NTSTATUS? */
 609                         ldb_transaction_cancel(ldb);
 610                         TALLOC_FREE(tmp_ctx);
 611                         return WERR_INTERNAL_ERROR;
 612                 }
 613         }
 614
 615         ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, objects, &ext_res);
 616         if (ret != LDB_SUCCESS) {
 617                 /* restore previous schema */
 618                 if (used_global_schema) {
 619                         dsdb_set_global_schema(ldb);
 620                 } else if (cur_schema) {
 621                         dsdb_reference_schema(ldb, cur_schema, false);
 622                 }
 623
 624                 DEBUG(0,("Failed to apply records: %s: %s\n",
 625                          ldb_errstring(ldb), ldb_strerror(ret)));
 626                 ldb_transaction_cancel(ldb);
 627                 TALLOC_FREE(tmp_ctx);
 628                 return WERR_FOOBAR;
 629         }
 630         talloc_free(ext_res);
 631
 632         /* Save our updated prefixMap */
 633         if (working_schema) {
 634                 werr = dsdb_write_prefixes_from_schema_to_ldb(working_schema,
 635                                                               ldb,
 636                                                               working_schema);
 637                 if (!W_ERROR_IS_OK(werr)) {
 638                         /* restore previous schema */
 639                         if (used_global_schema) {
 640                                 dsdb_set_global_schema(ldb);
 641                         } else if (cur_schema ) {
 642                                 dsdb_reference_schema(ldb, cur_schema, false);
 643                         }
 644                         DEBUG(0,("Failed to save updated prefixMap: %s\n",
 645                                  win_errstr(werr)));
 646                         TALLOC_FREE(tmp_ctx);
 647                         return werr;
 648                 }
 649         }
 650
 651         ret = ldb_transaction_prepare_commit(ldb);
 652         if (ret != LDB_SUCCESS) {
 653                 /* restore previous schema */
 654                 if (used_global_schema) {
 655                         dsdb_set_global_schema(ldb);
 656                 } else if (cur_schema ) {
 657                         dsdb_reference_schema(ldb, cur_schema, false);
 658                 }
 659                 DEBUG(0,(__location__ " Failed to prepare commit of transaction: %s\n",
 660                          ldb_errstring(ldb)));
 661                 TALLOC_FREE(tmp_ctx);
 662                 return WERR_FOOBAR;
 663         }
 664
 665         ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num2, NULL);
 666         if (ret != LDB_SUCCESS) {
 667                 /* restore previous schema */
 668                 if (used_global_schema) {
 669                         dsdb_set_global_schema(ldb);
 670                 } else if (cur_schema ) {
 671                         dsdb_reference_schema(ldb, cur_schema, false);
 672                 }
 673                 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
 674                 ldb_transaction_cancel(ldb);
 675                 TALLOC_FREE(tmp_ctx);
 676                 return WERR_FOOBAR;
 677         }
 678
 679         /* if this replication partner didn't need to be notified
 680            before this transaction then it still doesn't need to be
 681            notified, as the changes came from this server */
 682         if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) {
 683                 *notify_uSN = seq_num2;
 684         }
 685
 686         ret = ldb_transaction_commit(ldb);
 687         if (ret != LDB_SUCCESS) {
 688                 /* restore previous schema */
 689                 if (used_global_schema) {
 690                         dsdb_set_global_schema(ldb);
 691                 } else if (cur_schema ) {
 692                         dsdb_reference_schema(ldb, cur_schema, false);
 693                 }
 694                 DEBUG(0,(__location__ " Failed to commit transaction\n"));
 695                 TALLOC_FREE(tmp_ctx);
 696                 return WERR_FOOBAR;
 697         }
 698
 699         /*
 700          * Reset the Schema used by ldb. This will lead to
 701          * a schema cache being refreshed from database.
 702          */
 703         if (working_schema) {
 704                 struct ldb_message *msg;
 705                 struct ldb_request *req;
 706
 707                 /* Force a reload */
 708                 working_schema->last_refresh = 0;
 709                 new_schema = dsdb_get_schema(ldb, tmp_ctx);
 710                 /* TODO:
 711                  * If dsdb_get_schema() fails, we just fall back
 712                  * to what we had.  However, the database is probably
 713                  * unable to operate for other users from this
 714                  * point... */
 715                 if (new_schema && used_global_schema) {
 716                         dsdb_make_schema_global(ldb, new_schema);
 717                 } else if (used_global_schema) {
 718                         DEBUG(0,("Failed to re-load schema after commit of transaction\n"));
 719                         dsdb_set_global_schema(ldb);
 720                         TALLOC_FREE(tmp_ctx);
 721                         return WERR_INTERNAL_ERROR;
 722                 } else {
 723                         DEBUG(0,("Failed to re-load schema after commit of transaction\n"));
 724                         dsdb_reference_schema(ldb, cur_schema, false);
 725                         TALLOC_FREE(tmp_ctx);
 726                         return WERR_INTERNAL_ERROR;
 727                 }
 728                 msg = ldb_msg_new(tmp_ctx);
 729                 if (msg == NULL) {
 730                         TALLOC_FREE(tmp_ctx);
 731                         return WERR_NOMEM;
 732                 }
 733                 msg->dn = ldb_dn_new(msg, ldb, "");
 734                 if (msg->dn == NULL) {
 735                         TALLOC_FREE(tmp_ctx);
 736                         return WERR_NOMEM;
 737                 }
 738
 739                 ret = ldb_msg_add_string(msg, "schemaUpdateNow", "1");
 740                 if (ret != LDB_SUCCESS) {
 741                         TALLOC_FREE(tmp_ctx);
 742                         return WERR_INTERNAL_ERROR;
 743                 }
 744
 745                 ret = ldb_build_mod_req(&req, ldb, objects,
 746                                 msg,
 747                                 LDB_SCOPE_BASE,
 748                                 NULL,
 749                                 ldb_op_default_callback,
 750                                 NULL);
 751
 752                 if (ret != LDB_SUCCESS) {
 753                         TALLOC_FREE(tmp_ctx);
 754                         return WERR_DS_DRA_INTERNAL_ERROR;
 755                 }
 756
 757                 ret = ldb_transaction_start(ldb);
 758                 if (ret != LDB_SUCCESS) {
 759                         TALLOC_FREE(tmp_ctx);
 760                         DEBUG(0, ("Autotransaction start failed\n"));
 761                         return WERR_DS_DRA_INTERNAL_ERROR;
 762                 }
 763
 764                 ret = ldb_request(ldb, req);
 765                 if (ret == LDB_SUCCESS) {
 766                         ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 767                 }
 768
 769                 if (ret == LDB_SUCCESS) {
 770                         ret = ldb_transaction_commit(ldb);
 771                 } else {
 772                         DEBUG(0, ("Schema update now failed: %s\n",
 773                                   ldb_errstring(ldb)));
 774                         ldb_transaction_cancel(ldb);
 775                 }
 776
 777                 if (ret != LDB_SUCCESS) {
 778                         DEBUG(0, ("Commit failed: %s\n", ldb_errstring(ldb)));
 779                         TALLOC_FREE(tmp_ctx);
 780                         return WERR_DS_INTERNAL_FAILURE;
 781                 }
 782         }
 783
 784         DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n",
 785                  objects->num_objects, objects->linked_attributes_count,
 786                  ldb_dn_get_linearized(objects->partition_dn)));
 787
 788         TALLOC_FREE(tmp_ctx);
 789         return WERR_OK;
 790 }
 791
 792 static WERROR dsdb_origin_object_convert(struct ldb_context *ldb,
 793                                          const struct dsdb_schema *schema,
 794                                          const struct drsuapi_DsReplicaObjectListItem *in,
 795                                          TALLOC_CTX *mem_ctx,
 796                                          struct ldb_message **_msg)
 797 {
 798         WERROR status;
 799         unsigned int i;
 800         struct ldb_message *msg;
 801
 802         if (!in->object.identifier) {
 803                 return WERR_FOOBAR;
 804         }
 805
 806         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
 807                 return WERR_FOOBAR;
 808         }
 809
 810         msg = ldb_msg_new(mem_ctx);
 811         W_ERROR_HAVE_NO_MEMORY(msg);
 812
 813         msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
 814         W_ERROR_HAVE_NO_MEMORY(msg->dn);
 815
 816         msg->num_elements       = in->object.attribute_ctr.num_attributes;
 817         msg->elements           = talloc_array(msg, struct ldb_message_element,
 818                                                msg->num_elements);
 819         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 820
 821         for (i=0; i < msg->num_elements; i++) {
 822                 struct drsuapi_DsReplicaAttribute *a;
 823                 struct ldb_message_element *e;
 824
 825                 a = &in->object.attribute_ctr.attributes[i];
 826                 e = &msg->elements[i];
 827
 828                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, schema->prefixmap,
 829                                                        a, msg->elements, e);
 830                 W_ERROR_NOT_OK_RETURN(status);
 831         }
 832
 833
 834         *_msg = msg;
 835
 836         return WERR_OK;
 837 }
 838
 839 WERROR dsdb_origin_objects_commit(struct ldb_context *ldb,
 840                                   TALLOC_CTX *mem_ctx,
 841                                   const struct drsuapi_DsReplicaObjectListItem *first_object,
 842                                   uint32_t *_num,
 843                                   uint32_t dsdb_repl_flags,
 844                                   struct drsuapi_DsReplicaObjectIdentifier2 **_ids)
 845 {
 846         WERROR status;
 847         const struct dsdb_schema *schema;
 848         const struct drsuapi_DsReplicaObjectListItem *cur;
 849         struct ldb_message **objects;
 850         struct drsuapi_DsReplicaObjectIdentifier2 *ids;
 851         uint32_t i;
 852         uint32_t num_objects = 0;
 853         const char * const attrs[] = {
 854                 "objectGUID",
 855                 "objectSid",
 856                 NULL
 857         };
 858         struct ldb_result *res;
 859         int ret;
 860
 861         for (cur = first_object; cur; cur = cur->next_object) {
 862                 num_objects++;
 863         }
 864
 865         if (num_objects == 0) {
 866                 return WERR_OK;
 867         }
 868
 869         ret = ldb_transaction_start(ldb);
 870         if (ret != LDB_SUCCESS) {
 871                 return WERR_DS_INTERNAL_FAILURE;
 872         }
 873
 874         objects = talloc_array(mem_ctx, struct ldb_message *,
 875                                num_objects);
 876         if (objects == NULL) {
 877                 status = WERR_NOMEM;
 878                 goto cancel;
 879         }
 880
 881         schema = dsdb_get_schema(ldb, objects);
 882         if (!schema) {
 883                 return WERR_DS_SCHEMA_NOT_LOADED;
 884         }
 885
 886         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 887                 status = dsdb_origin_object_convert(ldb, schema, cur,
 888                                                     objects, &objects[i]);
 889                 if (!W_ERROR_IS_OK(status)) {
 890                         goto cancel;
 891                 }
 892         }
 893
 894         ids = talloc_array(mem_ctx,
 895                            struct drsuapi_DsReplicaObjectIdentifier2,
 896                            num_objects);
 897         if (ids == NULL) {
 898                 status = WERR_NOMEM;
 899                 goto cancel;
 900         }
 901
 902         if (dsdb_repl_flags & DSDB_REPL_FLAG_ADD_NCNAME) {
 903                 /* check for possible NC creation */
 904                 for (i=0; i < num_objects; i++) {
 905                         struct ldb_message *msg = objects[i];
 906                         struct ldb_message_element *el;
 907                         struct ldb_dn *nc_dn;
 908
 909                         if (ldb_msg_check_string_attribute(msg, "objectClass", "crossRef") == 0) {
 910                                 continue;
 911                         }
 912                         el = ldb_msg_find_element(msg, "nCName");
 913                         if (el == NULL || el->num_values != 1) {
 914                                 continue;
 915                         }
 916                         nc_dn = ldb_dn_from_ldb_val(objects, ldb, &el->values[0]);
 917                         if (!ldb_dn_validate(nc_dn)) {
 918                                 continue;
 919                         }
 920                         ret = dsdb_create_partial_replica_NC(ldb, nc_dn);
 921                         if (ret != LDB_SUCCESS) {
 922                                 status = WERR_DS_INTERNAL_FAILURE;
 923                                 goto cancel;
 924                         }
 925                 }
 926         }
 927
 928         for (i=0; i < num_objects; i++) {
 929                 struct dom_sid *sid = NULL;
 930                 struct ldb_request *add_req;
 931
 932                 DEBUG(6,(__location__ ": adding %s\n",
 933                          ldb_dn_get_linearized(objects[i]->dn)));
 934
 935                 ret = ldb_build_add_req(&add_req,
 936                                         ldb,
 937                                         objects,
 938                                         objects[i],
 939                                         NULL,
 940                                         NULL,
 941                                         ldb_op_default_callback,
 942                                         NULL);
 943                 if (ret != LDB_SUCCESS) {
 944                         status = WERR_DS_INTERNAL_FAILURE;
 945                         goto cancel;
 946                 }
 947
 948                 ret = ldb_request_add_control(add_req, LDB_CONTROL_RELAX_OID, true, NULL);
 949                 if (ret != LDB_SUCCESS) {
 950                         status = WERR_DS_INTERNAL_FAILURE;
 951                         goto cancel;
 952                 }
 953
 954                 ret = ldb_request(ldb, add_req);
 955                 if (ret == LDB_SUCCESS) {
 956                         ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
 957                 }
 958                 if (ret != LDB_SUCCESS) {
 959                         DEBUG(0,(__location__ ": Failed add of %s - %s\n",
 960                                  ldb_dn_get_linearized(objects[i]->dn), ldb_errstring(ldb)));
 961                         status = WERR_DS_INTERNAL_FAILURE;
 962                         goto cancel;
 963                 }
 964
 965                 talloc_free(add_req);
 966
 967                 ret = ldb_search(ldb, objects, &res, objects[i]->dn,
 968                                  LDB_SCOPE_BASE, attrs,
 969                                  "(objectClass=*)");
 970                 if (ret != LDB_SUCCESS) {
 971                         status = WERR_DS_INTERNAL_FAILURE;
 972                         goto cancel;
 973                 }
 974                 ids[i].guid = samdb_result_guid(res->msgs[0], "objectGUID");
 975                 sid = samdb_result_dom_sid(objects, res->msgs[0], "objectSid");
 976                 if (sid) {
 977                         ids[i].sid = *sid;
 978                 } else {
 979                         ZERO_STRUCT(ids[i].sid);
 980                 }
 981         }
 982
 983         ret = ldb_transaction_commit(ldb);
 984         if (ret != LDB_SUCCESS) {
 985                 return WERR_DS_INTERNAL_FAILURE;
 986         }
 987
 988         talloc_free(objects);
 989
 990         *_num = num_objects;
 991         *_ids = ids;
 992         return WERR_OK;
 993
 994 cancel:
 995         talloc_free(objects);
 996         ldb_transaction_cancel(ldb);
 997         return status;
 998 }