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