2 Unix SMB/CIFS mplementation.
3 Helper functions for applying replicated objects
5 Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
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.
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.
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/>.
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"
35 * Multi-pass working schema creation
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.
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,
51 struct dsdb_schema **_schema_out)
54 struct schema_list *next, *prev;
55 const struct drsuapi_DsReplicaObjectListItemEx *obj;
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;
65 /* make a copy of the iniatial_scheam so we don't mess with it */
66 working_schema = dsdb_schema_copy_shallow(mem_ctx, ldb, initial_schema);
67 if (!working_schema) {
68 DEBUG(0,(__location__ ": schema copy failed!\n"));
72 /* we are going to need remote prefixMap for decoding */
73 werr = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
74 mem_ctx, &pfm_remote, NULL);
75 if (!W_ERROR_IS_OK(werr)) {
76 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
81 /* create a list of objects yet to be converted */
82 for (cur = first_object; cur; cur = cur->next_object) {
83 schema_list_item = talloc(mem_ctx, struct schema_list);
84 schema_list_item->obj = cur;
85 DLIST_ADD_END(schema_list, schema_list_item, struct schema_list);
88 /* resolve objects until all are resolved and in local schema */
92 uint32_t converted_obj_count = 0;
93 uint32_t failed_obj_count = 0;
94 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
95 W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
97 for (schema_list_item = schema_list; schema_list_item; schema_list_item=schema_list_next_item) {
98 struct dsdb_extended_replicated_object object;
100 cur = schema_list_item->obj;
102 /* Save the next item, now we have saved out
103 * the current one, so we can DLIST_REMOVE it
105 schema_list_next_item = schema_list_item->next;
108 * Convert the objects into LDB messages using the
109 * schema we have so far. It's ok if we fail to convert
110 * an object. We should convert more objects on next pass.
112 werr = dsdb_convert_object_ex(ldb, working_schema, pfm_remote,
115 if (!W_ERROR_IS_OK(werr)) {
116 DEBUG(1,("Warning: Failed to convert schema object %s into ldb msg\n",
117 cur->object.identifier->dn));
122 * Convert the schema from ldb_message format
123 * (OIDs as OID strings) into schema, using
124 * the remote prefixMap
126 werr = dsdb_schema_set_el_from_ldb_msg(ldb,
129 if (!W_ERROR_IS_OK(werr)) {
130 DEBUG(1,("Warning: failed to convert object %s into a schema element: %s\n",
131 ldb_dn_get_linearized(object.msg->dn),
135 DLIST_REMOVE(schema_list, schema_list_item);
136 talloc_free(schema_list_item);
137 converted_obj_count++;
141 talloc_free(tmp_ctx);
143 DEBUG(4,("Schema load pass %d: %d/%d of %d objects left to be converted.\n",
144 pass_no, failed_obj_count, converted_obj_count, object_count));
147 /* check if we converted any objects in this pass */
148 if (converted_obj_count == 0) {
149 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));
150 return WERR_INTERNAL_ERROR;
153 /* rebuild indexes */
154 ret = dsdb_setup_sorted_accessors(ldb, working_schema);
155 if (LDB_SUCCESS != ret) {
156 DEBUG(0,("Failed to create schema-cache indexes!\n"));
157 return WERR_INTERNAL_ERROR;
161 *_schema_out = working_schema;
166 WERROR dsdb_convert_object_ex(struct ldb_context *ldb,
167 const struct dsdb_schema *schema,
168 const struct dsdb_schema_prefixmap *pfm_remote,
169 const struct drsuapi_DsReplicaObjectListItemEx *in,
170 const DATA_BLOB *gensec_skey,
172 struct dsdb_extended_replicated_object *out)
177 struct ldb_message *msg;
178 struct replPropertyMetaDataBlob *md;
179 struct ldb_val guid_value;
180 NTTIME whenChanged = 0;
181 time_t whenChanged_t;
182 const char *whenChanged_s;
183 const char *rdn_name = NULL;
184 const struct ldb_val *rdn_value = NULL;
185 const struct dsdb_attribute *rdn_attr = NULL;
187 struct drsuapi_DsReplicaAttribute *name_a = NULL;
188 struct drsuapi_DsReplicaMetaData *name_d = NULL;
189 struct replPropertyMetaData1 *rdn_m = NULL;
190 struct dom_sid *sid = NULL;
194 if (!in->object.identifier) {
198 if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
202 if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
206 if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
210 sid = &in->object.identifier->sid;
211 if (sid->num_auths > 0) {
212 rid = sid->sub_auths[sid->num_auths - 1];
215 msg = ldb_msg_new(mem_ctx);
216 W_ERROR_HAVE_NO_MEMORY(msg);
218 msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
219 W_ERROR_HAVE_NO_MEMORY(msg->dn);
221 rdn_name = ldb_dn_get_rdn_name(msg->dn);
222 rdn_attr = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
226 rdn_attid = rdn_attr->attributeID_id;
227 rdn_value = ldb_dn_get_rdn_val(msg->dn);
229 msg->num_elements = in->object.attribute_ctr.num_attributes;
230 msg->elements = talloc_array(msg, struct ldb_message_element,
232 W_ERROR_HAVE_NO_MEMORY(msg->elements);
234 md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
235 W_ERROR_HAVE_NO_MEMORY(md);
239 md->ctr.ctr1.count = in->meta_data_ctr->count;
240 md->ctr.ctr1.reserved = 0;
241 md->ctr.ctr1.array = talloc_array(mem_ctx,
242 struct replPropertyMetaData1,
243 md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
244 W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
246 for (i=0; i < in->meta_data_ctr->count; i++) {
247 struct drsuapi_DsReplicaAttribute *a;
248 struct drsuapi_DsReplicaMetaData *d;
249 struct replPropertyMetaData1 *m;
250 struct ldb_message_element *e;
253 a = &in->object.attribute_ctr.attributes[i];
254 d = &in->meta_data_ctr->meta_data[i];
255 m = &md->ctr.ctr1.array[i];
256 e = &msg->elements[i];
258 for (j=0; j<a->value_ctr.num_values; j++) {
259 status = drsuapi_decrypt_attribute(a->value_ctr.values[j].blob, gensec_skey, rid, a);
260 W_ERROR_NOT_OK_RETURN(status);
263 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, pfm_remote,
264 a, msg->elements, e);
265 W_ERROR_NOT_OK_RETURN(status);
268 m->version = d->version;
269 m->originating_change_time = d->originating_change_time;
270 m->originating_invocation_id = d->originating_invocation_id;
271 m->originating_usn = d->originating_usn;
274 if (d->originating_change_time > whenChanged) {
275 whenChanged = d->originating_change_time;
278 if (a->attid == DRSUAPI_ATTID_name) {
281 rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
286 struct ldb_message_element *el;
287 el = ldb_msg_find_element(msg, rdn_attr->lDAPDisplayName);
289 ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
290 if (ret != LDB_SUCCESS) {
294 if (el->num_values != 1) {
295 DEBUG(0,(__location__ ": Unexpected num_values=%u\n",
299 if (!ldb_val_equal_exact(&el->values[0], rdn_value)) {
300 DEBUG(0,(__location__ ": RDN value changed? '%*.*s' '%*.*s'\n",
301 (int)el->values[0].length, (int)el->values[0].length, el->values[0].data,
302 (int)rdn_value->length, (int)rdn_value->length, rdn_value->data));
307 rdn_m->attid = rdn_attid;
308 rdn_m->version = name_d->version;
309 rdn_m->originating_change_time = name_d->originating_change_time;
310 rdn_m->originating_invocation_id = name_d->originating_invocation_id;
311 rdn_m->originating_usn = name_d->originating_usn;
312 rdn_m->local_usn = 0;
313 md->ctr.ctr1.count++;
317 whenChanged_t = nt_time_to_unix(whenChanged);
318 whenChanged_s = ldb_timestring(msg, whenChanged_t);
319 W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
321 nt_status = GUID_to_ndr_blob(&in->object.identifier->guid, msg, &guid_value);
322 if (!NT_STATUS_IS_OK(nt_status)) {
323 return ntstatus_to_werror(nt_status);
327 out->guid_value = guid_value;
328 out->when_changed = whenChanged_s;
333 WERROR dsdb_replicated_objects_convert(struct ldb_context *ldb,
334 const struct dsdb_schema *schema,
335 const char *partition_dn_str,
336 const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
337 uint32_t object_count,
338 const struct drsuapi_DsReplicaObjectListItemEx *first_object,
339 uint32_t linked_attributes_count,
340 const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
341 const struct repsFromTo1 *source_dsa,
342 const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
343 const DATA_BLOB *gensec_skey,
345 struct dsdb_extended_replicated_objects **objects)
348 struct ldb_dn *partition_dn;
349 struct dsdb_schema_prefixmap *pfm_remote;
350 struct dsdb_extended_replicated_objects *out;
351 const struct drsuapi_DsReplicaObjectListItemEx *cur;
354 out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
355 W_ERROR_HAVE_NO_MEMORY(out);
356 out->version = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
359 * Ensure schema is kept valid for as long as 'out'
360 * which may contain pointers to it
362 schema = talloc_reference(out, schema);
363 W_ERROR_HAVE_NO_MEMORY(schema);
365 partition_dn = ldb_dn_new(out, ldb, partition_dn_str);
366 W_ERROR_HAVE_NO_MEMORY_AND_FREE(partition_dn, out);
368 status = dsdb_schema_pfm_from_drsuapi_pfm(mapping_ctr, true,
369 out, &pfm_remote, NULL);
370 if (!W_ERROR_IS_OK(status)) {
371 DEBUG(0,(__location__ ": Failed to decode remote prefixMap: %s",
372 win_errstr(status)));
377 if (ldb_dn_compare(partition_dn, ldb_get_schema_basedn(ldb)) != 0) {
379 * check for schema changes in case
380 * we are not replicating Schema NC
382 status = dsdb_schema_info_cmp(schema, mapping_ctr);
383 if (!W_ERROR_IS_OK(status)) {
384 DEBUG(1,("Remote schema has changed while replicating %s\n",
391 out->partition_dn = partition_dn;
393 out->source_dsa = source_dsa;
394 out->uptodateness_vector= uptodateness_vector;
396 out->num_objects = object_count;
397 out->objects = talloc_array(out,
398 struct dsdb_extended_replicated_object,
400 W_ERROR_HAVE_NO_MEMORY_AND_FREE(out->objects, out);
402 /* pass the linked attributes down to the repl_meta_data
404 out->linked_attributes_count = linked_attributes_count;
405 out->linked_attributes = linked_attributes;
407 for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
408 if (i == out->num_objects) {
413 status = dsdb_convert_object_ex(ldb, schema, pfm_remote,
415 out->objects, &out->objects[i]);
416 if (!W_ERROR_IS_OK(status)) {
418 DEBUG(0,("Failed to convert object %s: %s\n",
419 cur->object.identifier->dn,
420 win_errstr(status)));
424 if (i != out->num_objects) {
429 /* free pfm_remote, we won't need it anymore */
430 talloc_free(pfm_remote);
437 * Commits a list of replicated objects.
439 * @param working_schema dsdb_schema to be used for resolving
440 * Classes/Attributes during Schema replication. If not NULL,
441 * it will be set on ldb and used while committing replicated objects
443 WERROR dsdb_replicated_objects_commit(struct ldb_context *ldb,
444 struct dsdb_schema *working_schema,
445 struct dsdb_extended_replicated_objects *objects,
446 uint64_t *notify_uSN)
449 struct ldb_result *ext_res;
450 struct dsdb_schema *cur_schema = NULL;
452 uint64_t seq_num1, seq_num2;
454 /* TODO: handle linked attributes */
456 /* wrap the extended operation in a transaction
457 See [MS-DRSR] 3.3.2 Transactions
459 ret = ldb_transaction_start(ldb);
460 if (ret != LDB_SUCCESS) {
461 DEBUG(0,(__location__ " Failed to start transaction\n"));
465 ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num1, NULL);
466 if (ret != LDB_SUCCESS) {
467 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
468 ldb_transaction_cancel(ldb);
473 * Set working_schema for ldb in case we are replicating from Schema NC.
474 * Schema won't be reloaded during Replicated Objects commit, as it is
475 * done in a transaction. So we need some way to search for newly
476 * added Classes and Attributes
478 if (working_schema) {
479 /* store current schema so we can fall back in case of failure */
480 cur_schema = dsdb_get_schema(ldb, working_schema);
482 ret = dsdb_reference_schema(ldb, working_schema, false);
483 if (ret != LDB_SUCCESS) {
484 DEBUG(0,(__location__ "Failed to reference working schema - %s\n",
486 /* TODO: Map LDB Error to NTSTATUS? */
487 ldb_transaction_cancel(ldb);
488 return WERR_INTERNAL_ERROR;
492 ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, objects, &ext_res);
493 if (ret != LDB_SUCCESS) {
494 /* restore previous schema */
496 dsdb_reference_schema(ldb, cur_schema, false);
497 dsdb_make_schema_global(ldb, cur_schema);
500 DEBUG(0,("Failed to apply records: %s: %s\n",
501 ldb_errstring(ldb), ldb_strerror(ret)));
502 ldb_transaction_cancel(ldb);
505 talloc_free(ext_res);
507 /* Save our updated prefixMap */
508 if (working_schema) {
509 werr = dsdb_write_prefixes_from_schema_to_ldb(working_schema,
512 if (!W_ERROR_IS_OK(werr)) {
513 /* restore previous schema */
515 dsdb_reference_schema(ldb, cur_schema, false);
516 dsdb_make_schema_global(ldb, cur_schema);
518 DEBUG(0,("Failed to save updated prefixMap: %s\n",
524 ret = ldb_transaction_prepare_commit(ldb);
525 if (ret != LDB_SUCCESS) {
526 /* restore previous schema */
528 dsdb_reference_schema(ldb, cur_schema, false);
529 dsdb_make_schema_global(ldb, cur_schema);
531 DEBUG(0,(__location__ " Failed to prepare commit of transaction: %s\n",
532 ldb_errstring(ldb)));
536 ret = dsdb_load_partition_usn(ldb, objects->partition_dn, &seq_num2, NULL);
537 if (ret != LDB_SUCCESS) {
538 /* restore previous schema */
540 dsdb_reference_schema(ldb, cur_schema, false);
541 dsdb_make_schema_global(ldb, cur_schema);
543 DEBUG(0,(__location__ " Failed to load partition uSN\n"));
544 ldb_transaction_cancel(ldb);
548 /* if this replication partner didn't need to be notified
549 before this transaction then it still doesn't need to be
550 notified, as the changes came from this server */
551 if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) {
552 *notify_uSN = seq_num2;
555 ret = ldb_transaction_commit(ldb);
556 if (ret != LDB_SUCCESS) {
557 /* restore previous schema */
559 dsdb_reference_schema(ldb, cur_schema, false);
560 dsdb_make_schema_global(ldb, cur_schema);
562 DEBUG(0,(__location__ " Failed to commit transaction\n"));
567 * Reset the Schema used by ldb. This will lead to
568 * a schema cache being refreshed from database.
570 if (working_schema) {
571 cur_schema = dsdb_get_schema(ldb, NULL);
572 /* TODO: What we do in case dsdb_get_schema() fail?
573 * We can't fallback at this point anymore */
575 dsdb_make_schema_global(ldb, cur_schema);
579 DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n",
580 objects->num_objects, objects->linked_attributes_count,
581 ldb_dn_get_linearized(objects->partition_dn)));
586 static WERROR dsdb_origin_object_convert(struct ldb_context *ldb,
587 const struct dsdb_schema *schema,
588 const struct drsuapi_DsReplicaObjectListItem *in,
590 struct ldb_message **_msg)
594 struct ldb_message *msg;
596 if (!in->object.identifier) {
600 if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
604 msg = ldb_msg_new(mem_ctx);
605 W_ERROR_HAVE_NO_MEMORY(msg);
607 msg->dn = ldb_dn_new(msg, ldb, in->object.identifier->dn);
608 W_ERROR_HAVE_NO_MEMORY(msg->dn);
610 msg->num_elements = in->object.attribute_ctr.num_attributes;
611 msg->elements = talloc_array(msg, struct ldb_message_element,
613 W_ERROR_HAVE_NO_MEMORY(msg->elements);
615 for (i=0; i < msg->num_elements; i++) {
616 struct drsuapi_DsReplicaAttribute *a;
617 struct ldb_message_element *e;
619 a = &in->object.attribute_ctr.attributes[i];
620 e = &msg->elements[i];
622 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, schema->prefixmap,
623 a, msg->elements, e);
624 W_ERROR_NOT_OK_RETURN(status);
633 WERROR dsdb_origin_objects_commit(struct ldb_context *ldb,
635 const struct drsuapi_DsReplicaObjectListItem *first_object,
637 struct drsuapi_DsReplicaObjectIdentifier2 **_ids)
640 const struct dsdb_schema *schema;
641 const struct drsuapi_DsReplicaObjectListItem *cur;
642 struct ldb_message **objects;
643 struct drsuapi_DsReplicaObjectIdentifier2 *ids;
645 uint32_t num_objects = 0;
646 const char * const attrs[] = {
651 struct ldb_result *res;
654 for (cur = first_object; cur; cur = cur->next_object) {
658 if (num_objects == 0) {
662 ret = ldb_transaction_start(ldb);
663 if (ret != LDB_SUCCESS) {
664 return WERR_DS_INTERNAL_FAILURE;
667 objects = talloc_array(mem_ctx, struct ldb_message *,
669 if (objects == NULL) {
674 schema = dsdb_get_schema(ldb, objects);
676 return WERR_DS_SCHEMA_NOT_LOADED;
679 for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
680 status = dsdb_origin_object_convert(ldb, schema, cur,
681 objects, &objects[i]);
682 if (!W_ERROR_IS_OK(status)) {
687 ids = talloc_array(mem_ctx,
688 struct drsuapi_DsReplicaObjectIdentifier2,
695 for (i=0; i < num_objects; i++) {
696 struct dom_sid *sid = NULL;
697 struct ldb_request *add_req;
699 DEBUG(6,(__location__ ": adding %s\n",
700 ldb_dn_get_linearized(objects[i]->dn)));
702 ret = ldb_build_add_req(&add_req,
708 ldb_op_default_callback,
710 if (ret != LDB_SUCCESS) {
711 status = WERR_DS_INTERNAL_FAILURE;
715 ret = ldb_request_add_control(add_req, LDB_CONTROL_RELAX_OID, true, NULL);
716 if (ret != LDB_SUCCESS) {
717 status = WERR_DS_INTERNAL_FAILURE;
721 ret = ldb_request(ldb, add_req);
722 if (ret == LDB_SUCCESS) {
723 ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
725 if (ret != LDB_SUCCESS) {
726 DEBUG(0,(__location__ ": Failed add of %s - %s\n",
727 ldb_dn_get_linearized(objects[i]->dn), ldb_errstring(ldb)));
728 status = WERR_DS_INTERNAL_FAILURE;
732 talloc_free(add_req);
734 ret = ldb_search(ldb, objects, &res, objects[i]->dn,
735 LDB_SCOPE_BASE, attrs,
737 if (ret != LDB_SUCCESS) {
738 status = WERR_DS_INTERNAL_FAILURE;
741 ids[i].guid = samdb_result_guid(res->msgs[0], "objectGUID");
742 sid = samdb_result_dom_sid(objects, res->msgs[0], "objectSid");
746 ZERO_STRUCT(ids[i].sid);
750 ret = ldb_transaction_commit(ldb);
751 if (ret != LDB_SUCCESS) {
752 return WERR_DS_INTERNAL_FAILURE;
755 talloc_free(objects);
762 talloc_free(objects);
763 ldb_transaction_cancel(ldb);