4 Copyright (C) Simo Sorce 2004-2008
5 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
6 Copyright (C) Andrew Tridgell 2005
7 Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
8 Copyright (C) Matthieu Patou <mat@samba.org> 2010
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 * Component: ldb repl_meta_data module
29 * Description: - add a unique objectGUID onto every new record,
30 * - handle whenCreated, whenChanged timestamps
31 * - handle uSNCreated, uSNChanged numbers
32 * - handle replPropertyMetaData attribute
35 * Author: Stefan Metzmacher
39 #include "ldb_module.h"
40 #include "dsdb/samdb/samdb.h"
41 #include "dsdb/common/proto.h"
42 #include "../libds/common/flags.h"
43 #include "librpc/gen_ndr/ndr_misc.h"
44 #include "librpc/gen_ndr/ndr_drsuapi.h"
45 #include "librpc/gen_ndr/ndr_drsblobs.h"
46 #include "param/param.h"
47 #include "libcli/security/security.h"
48 #include "lib/util/dlinklist.h"
49 #include "dsdb/samdb/ldb_modules/util.h"
50 #include "lib/util/binsearch.h"
51 #include "lib/util/tsort.h"
53 struct replmd_private {
55 struct la_entry *la_list;
57 struct la_backlink *la_backlinks;
59 struct nc_entry *prev, *next;
62 uint64_t mod_usn_urgent;
67 struct la_entry *next, *prev;
68 struct drsuapi_DsReplicaLinkedAttribute *la;
71 struct replmd_replicated_request {
72 struct ldb_module *module;
73 struct ldb_request *req;
75 const struct dsdb_schema *schema;
77 /* the controls we pass down */
78 struct ldb_control **controls;
80 /* details for the mode where we apply a bunch of inbound replication meessages */
82 uint32_t index_current;
83 struct dsdb_extended_replicated_objects *objs;
85 struct ldb_message *search_msg;
91 enum urgent_situation {
92 REPL_URGENT_ON_CREATE = 1,
93 REPL_URGENT_ON_UPDATE = 2,
94 REPL_URGENT_ON_DELETE = 4
99 const char *update_name;
100 enum urgent_situation repl_situation;
101 } urgent_objects[] = {
102 {"nTDSDSA", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_DELETE)},
103 {"crossRef", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_DELETE)},
104 {"attributeSchema", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
105 {"classSchema", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
106 {"secret", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
107 {"rIDManager", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
111 /* Attributes looked for when updating or deleting, to check for a urgent replication needed */
112 static const char *urgent_attrs[] = {
115 "userAccountControl",
120 static bool replmd_check_urgent_objectclass(const struct ldb_message_element *objectclass_el,
121 enum urgent_situation situation)
124 for (i=0; urgent_objects[i].update_name; i++) {
126 if ((situation & urgent_objects[i].repl_situation) == 0) {
130 for (j=0; j<objectclass_el->num_values; j++) {
131 const struct ldb_val *v = &objectclass_el->values[j];
132 if (ldb_attr_cmp((const char *)v->data, urgent_objects[i].update_name) == 0) {
140 static bool replmd_check_urgent_attribute(const struct ldb_message_element *el)
142 if (ldb_attr_in_list(urgent_attrs, el->name)) {
149 static int replmd_replicated_apply_next(struct replmd_replicated_request *ar);
152 initialise the module
153 allocate the private structure and build the list
154 of partition DNs for use by replmd_notify()
156 static int replmd_init(struct ldb_module *module)
158 struct replmd_private *replmd_private;
159 struct ldb_context *ldb = ldb_module_get_ctx(module);
161 replmd_private = talloc_zero(module, struct replmd_private);
162 if (replmd_private == NULL) {
164 return LDB_ERR_OPERATIONS_ERROR;
166 ldb_module_set_private(module, replmd_private);
168 return ldb_next_init(module);
172 cleanup our per-transaction contexts
174 static void replmd_txn_cleanup(struct replmd_private *replmd_private)
176 talloc_free(replmd_private->la_ctx);
177 replmd_private->la_list = NULL;
178 replmd_private->la_ctx = NULL;
180 talloc_free(replmd_private->bl_ctx);
181 replmd_private->la_backlinks = NULL;
182 replmd_private->bl_ctx = NULL;
187 struct la_backlink *next, *prev;
188 const char *attr_name;
189 struct GUID forward_guid, target_guid;
194 process a backlinks we accumulated during a transaction, adding and
195 deleting the backlinks from the target objects
197 static int replmd_process_backlink(struct ldb_module *module, struct la_backlink *bl, struct ldb_request *parent)
199 struct ldb_dn *target_dn, *source_dn;
201 struct ldb_context *ldb = ldb_module_get_ctx(module);
202 struct ldb_message *msg;
203 TALLOC_CTX *tmp_ctx = talloc_new(bl);
209 - construct ldb_message
210 - either an add or a delete
212 ret = dsdb_module_dn_by_guid(module, tmp_ctx, &bl->target_guid, &target_dn, parent);
213 if (ret != LDB_SUCCESS) {
214 DEBUG(2,(__location__ ": WARNING: Failed to find target DN for linked attribute with GUID %s\n",
215 GUID_string(bl, &bl->target_guid)));
219 ret = dsdb_module_dn_by_guid(module, tmp_ctx, &bl->forward_guid, &source_dn, parent);
220 if (ret != LDB_SUCCESS) {
221 ldb_asprintf_errstring(ldb, "Failed to find source DN for linked attribute with GUID %s\n",
222 GUID_string(bl, &bl->forward_guid));
223 talloc_free(tmp_ctx);
227 msg = ldb_msg_new(tmp_ctx);
229 ldb_module_oom(module);
230 talloc_free(tmp_ctx);
231 return LDB_ERR_OPERATIONS_ERROR;
234 /* construct a ldb_message for adding/deleting the backlink */
236 dn_string = ldb_dn_get_extended_linearized(tmp_ctx, source_dn, 1);
238 ldb_module_oom(module);
239 talloc_free(tmp_ctx);
240 return LDB_ERR_OPERATIONS_ERROR;
242 ret = ldb_msg_add_steal_string(msg, bl->attr_name, dn_string);
243 if (ret != LDB_SUCCESS) {
244 talloc_free(tmp_ctx);
247 msg->elements[0].flags = bl->active?LDB_FLAG_MOD_ADD:LDB_FLAG_MOD_DELETE;
249 /* a backlink should never be single valued. Unfortunately the
250 exchange schema has a attribute
251 msExchBridgeheadedLocalConnectorsDNBL which is single
252 valued and a backlink. We need to cope with that by
253 ignoring the single value flag */
254 msg->elements[0].flags |= LDB_FLAG_INTERNAL_DISABLE_SINGLE_VALUE_CHECK;
256 ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE, parent);
257 if (ret == LDB_ERR_NO_SUCH_ATTRIBUTE && !bl->active) {
258 /* we allow LDB_ERR_NO_SUCH_ATTRIBUTE as success to
259 cope with possible corruption where the backlink has
260 already been removed */
261 DEBUG(3,("WARNING: backlink from %s already removed from %s - %s\n",
262 ldb_dn_get_linearized(target_dn),
263 ldb_dn_get_linearized(source_dn),
264 ldb_errstring(ldb)));
266 } else if (ret != LDB_SUCCESS) {
267 ldb_asprintf_errstring(ldb, "Failed to %s backlink from %s to %s - %s",
268 bl->active?"add":"remove",
269 ldb_dn_get_linearized(source_dn),
270 ldb_dn_get_linearized(target_dn),
272 talloc_free(tmp_ctx);
275 talloc_free(tmp_ctx);
280 add a backlink to the list of backlinks to add/delete in the prepare
283 static int replmd_add_backlink(struct ldb_module *module, const struct dsdb_schema *schema,
284 struct GUID *forward_guid, struct GUID *target_guid,
285 bool active, const struct dsdb_attribute *schema_attr, bool immediate)
287 const struct dsdb_attribute *target_attr;
288 struct la_backlink *bl;
289 struct replmd_private *replmd_private =
290 talloc_get_type_abort(ldb_module_get_private(module), struct replmd_private);
292 target_attr = dsdb_attribute_by_linkID(schema, schema_attr->linkID ^ 1);
295 * windows 2003 has a broken schema where the
296 * definition of msDS-IsDomainFor is missing (which is
297 * supposed to be the backlink of the
298 * msDS-HasDomainNCs attribute
303 /* see if its already in the list */
304 for (bl=replmd_private->la_backlinks; bl; bl=bl->next) {
305 if (GUID_equal(forward_guid, &bl->forward_guid) &&
306 GUID_equal(target_guid, &bl->target_guid) &&
307 (target_attr->lDAPDisplayName == bl->attr_name ||
308 strcmp(target_attr->lDAPDisplayName, bl->attr_name) == 0)) {
314 /* we found an existing one */
315 if (bl->active == active) {
318 DLIST_REMOVE(replmd_private->la_backlinks, bl);
323 if (replmd_private->bl_ctx == NULL) {
324 replmd_private->bl_ctx = talloc_new(replmd_private);
325 if (replmd_private->bl_ctx == NULL) {
326 ldb_module_oom(module);
327 return LDB_ERR_OPERATIONS_ERROR;
332 bl = talloc(replmd_private->bl_ctx, struct la_backlink);
334 ldb_module_oom(module);
335 return LDB_ERR_OPERATIONS_ERROR;
338 /* Ensure the schema does not go away before the bl->attr_name is used */
339 if (!talloc_reference(bl, schema)) {
341 ldb_module_oom(module);
342 return LDB_ERR_OPERATIONS_ERROR;
345 bl->attr_name = target_attr->lDAPDisplayName;
346 bl->forward_guid = *forward_guid;
347 bl->target_guid = *target_guid;
350 /* the caller may ask for this backlink to be processed
353 int ret = replmd_process_backlink(module, bl, NULL);
358 DLIST_ADD(replmd_private->la_backlinks, bl);
365 * Callback for most write operations in this module:
367 * notify the repl task that a object has changed. The notifies are
368 * gathered up in the replmd_private structure then written to the
369 * @REPLCHANGED object in each partition during the prepare_commit
371 static int replmd_op_callback(struct ldb_request *req, struct ldb_reply *ares)
374 struct replmd_replicated_request *ac =
375 talloc_get_type_abort(req->context, struct replmd_replicated_request);
376 struct replmd_private *replmd_private =
377 talloc_get_type_abort(ldb_module_get_private(ac->module), struct replmd_private);
378 struct nc_entry *modified_partition;
379 struct ldb_control *partition_ctrl;
380 const struct dsdb_control_current_partition *partition;
382 struct ldb_control **controls;
384 partition_ctrl = ldb_reply_get_control(ares, DSDB_CONTROL_CURRENT_PARTITION_OID);
386 controls = ares->controls;
387 if (ldb_request_get_control(ac->req,
388 DSDB_CONTROL_CURRENT_PARTITION_OID) == NULL) {
390 * Remove the current partition control from what we pass up
391 * the chain if it hasn't been requested manually.
393 controls = ldb_controls_except_specified(ares->controls, ares,
397 if (ares->error != LDB_SUCCESS) {
398 DEBUG(5,("%s failure. Error is: %s\n", __FUNCTION__, ldb_strerror(ares->error)));
399 return ldb_module_done(ac->req, controls,
400 ares->response, ares->error);
403 if (ares->type != LDB_REPLY_DONE) {
404 ldb_set_errstring(ldb_module_get_ctx(ac->module), "Invalid reply type for notify\n!");
405 return ldb_module_done(ac->req, NULL,
406 NULL, LDB_ERR_OPERATIONS_ERROR);
409 if (!partition_ctrl) {
410 ldb_set_errstring(ldb_module_get_ctx(ac->module),"No partition control on reply");
411 return ldb_module_done(ac->req, NULL,
412 NULL, LDB_ERR_OPERATIONS_ERROR);
415 partition = talloc_get_type_abort(partition_ctrl->data,
416 struct dsdb_control_current_partition);
418 if (ac->seq_num > 0) {
419 for (modified_partition = replmd_private->ncs; modified_partition;
420 modified_partition = modified_partition->next) {
421 if (ldb_dn_compare(modified_partition->dn, partition->dn) == 0) {
426 if (modified_partition == NULL) {
427 modified_partition = talloc_zero(replmd_private, struct nc_entry);
428 if (!modified_partition) {
429 ldb_oom(ldb_module_get_ctx(ac->module));
430 return ldb_module_done(ac->req, NULL,
431 NULL, LDB_ERR_OPERATIONS_ERROR);
433 modified_partition->dn = ldb_dn_copy(modified_partition, partition->dn);
434 if (!modified_partition->dn) {
435 ldb_oom(ldb_module_get_ctx(ac->module));
436 return ldb_module_done(ac->req, NULL,
437 NULL, LDB_ERR_OPERATIONS_ERROR);
439 DLIST_ADD(replmd_private->ncs, modified_partition);
442 if (ac->seq_num > modified_partition->mod_usn) {
443 modified_partition->mod_usn = ac->seq_num;
445 modified_partition->mod_usn_urgent = ac->seq_num;
450 if (ac->apply_mode) {
454 ret = replmd_replicated_apply_next(ac);
455 if (ret != LDB_SUCCESS) {
456 return ldb_module_done(ac->req, NULL, NULL, ret);
460 /* free the partition control container here, for the
461 * common path. Other cases will have it cleaned up
462 * eventually with the ares */
463 talloc_free(partition_ctrl);
464 return ldb_module_done(ac->req, controls,
465 ares->response, LDB_SUCCESS);
471 * update a @REPLCHANGED record in each partition if there have been
472 * any writes of replicated data in the partition
474 static int replmd_notify_store(struct ldb_module *module, struct ldb_request *parent)
476 struct replmd_private *replmd_private =
477 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
479 while (replmd_private->ncs) {
481 struct nc_entry *modified_partition = replmd_private->ncs;
483 ret = dsdb_module_save_partition_usn(module, modified_partition->dn,
484 modified_partition->mod_usn,
485 modified_partition->mod_usn_urgent, parent);
486 if (ret != LDB_SUCCESS) {
487 DEBUG(0,(__location__ ": Failed to save partition uSN for %s\n",
488 ldb_dn_get_linearized(modified_partition->dn)));
491 DLIST_REMOVE(replmd_private->ncs, modified_partition);
492 talloc_free(modified_partition);
500 created a replmd_replicated_request context
502 static struct replmd_replicated_request *replmd_ctx_init(struct ldb_module *module,
503 struct ldb_request *req)
505 struct ldb_context *ldb;
506 struct replmd_replicated_request *ac;
508 ldb = ldb_module_get_ctx(module);
510 ac = talloc_zero(req, struct replmd_replicated_request);
519 ac->schema = dsdb_get_schema(ldb, ac);
521 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
522 "replmd_modify: no dsdb_schema loaded");
523 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
531 add a time element to a record
533 static int add_time_element(struct ldb_message *msg, const char *attr, time_t t)
535 struct ldb_message_element *el;
539 if (ldb_msg_find_element(msg, attr) != NULL) {
543 s = ldb_timestring(msg, t);
545 return LDB_ERR_OPERATIONS_ERROR;
548 ret = ldb_msg_add_string(msg, attr, s);
549 if (ret != LDB_SUCCESS) {
553 el = ldb_msg_find_element(msg, attr);
554 /* always set as replace. This works because on add ops, the flag
556 el->flags = LDB_FLAG_MOD_REPLACE;
562 add a uint64_t element to a record
564 static int add_uint64_element(struct ldb_context *ldb, struct ldb_message *msg,
565 const char *attr, uint64_t v)
567 struct ldb_message_element *el;
570 if (ldb_msg_find_element(msg, attr) != NULL) {
574 ret = samdb_msg_add_uint64(ldb, msg, msg, attr, v);
575 if (ret != LDB_SUCCESS) {
579 el = ldb_msg_find_element(msg, attr);
580 /* always set as replace. This works because on add ops, the flag
582 el->flags = LDB_FLAG_MOD_REPLACE;
587 static int replmd_replPropertyMetaData1_attid_sort(const struct replPropertyMetaData1 *m1,
588 const struct replPropertyMetaData1 *m2,
589 const uint32_t *rdn_attid)
591 if (m1->attid == m2->attid) {
596 * the rdn attribute should be at the end!
597 * so we need to return a value greater than zero
598 * which means m1 is greater than m2
600 if (m1->attid == *rdn_attid) {
605 * the rdn attribute should be at the end!
606 * so we need to return a value less than zero
607 * which means m2 is greater than m1
609 if (m2->attid == *rdn_attid) {
613 return m1->attid > m2->attid ? 1 : -1;
616 static int replmd_replPropertyMetaDataCtr1_sort(struct replPropertyMetaDataCtr1 *ctr1,
617 const struct dsdb_schema *schema,
620 const char *rdn_name;
621 const struct dsdb_attribute *rdn_sa;
623 rdn_name = ldb_dn_get_rdn_name(dn);
625 DEBUG(0,(__location__ ": No rDN for %s?\n", ldb_dn_get_linearized(dn)));
626 return LDB_ERR_OPERATIONS_ERROR;
629 rdn_sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
630 if (rdn_sa == NULL) {
631 DEBUG(0,(__location__ ": No sa found for rDN %s for %s\n", rdn_name, ldb_dn_get_linearized(dn)));
632 return LDB_ERR_OPERATIONS_ERROR;
635 DEBUG(6,("Sorting rpmd with attid exception %u rDN=%s DN=%s\n",
636 rdn_sa->attributeID_id, rdn_name, ldb_dn_get_linearized(dn)));
638 LDB_TYPESAFE_QSORT(ctr1->array, ctr1->count, &rdn_sa->attributeID_id, replmd_replPropertyMetaData1_attid_sort);
643 static int replmd_ldb_message_element_attid_sort(const struct ldb_message_element *e1,
644 const struct ldb_message_element *e2,
645 const struct dsdb_schema *schema)
647 const struct dsdb_attribute *a1;
648 const struct dsdb_attribute *a2;
651 * TODO: make this faster by caching the dsdb_attribute pointer
652 * on the ldb_messag_element
655 a1 = dsdb_attribute_by_lDAPDisplayName(schema, e1->name);
656 a2 = dsdb_attribute_by_lDAPDisplayName(schema, e2->name);
659 * TODO: remove this check, we should rely on e1 and e2 having valid attribute names
663 return strcasecmp(e1->name, e2->name);
665 if (a1->attributeID_id == a2->attributeID_id) {
668 return a1->attributeID_id > a2->attributeID_id ? 1 : -1;
671 static void replmd_ldb_message_sort(struct ldb_message *msg,
672 const struct dsdb_schema *schema)
674 LDB_TYPESAFE_QSORT(msg->elements, msg->num_elements, schema, replmd_ldb_message_element_attid_sort);
677 static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
678 const struct GUID *invocation_id, uint64_t seq_num,
679 uint64_t local_usn, NTTIME nttime, uint32_t version, bool deleted);
683 fix up linked attributes in replmd_add.
684 This involves setting up the right meta-data in extended DN
685 components, and creating backlinks to the object
687 static int replmd_add_fix_la(struct ldb_module *module, struct ldb_message_element *el,
688 uint64_t seq_num, const struct GUID *invocationId, time_t t,
689 struct GUID *guid, const struct dsdb_attribute *sa, struct ldb_request *parent)
692 TALLOC_CTX *tmp_ctx = talloc_new(el->values);
693 struct ldb_context *ldb = ldb_module_get_ctx(module);
695 /* We will take a reference to the schema in replmd_add_backlink */
696 const struct dsdb_schema *schema = dsdb_get_schema(ldb, NULL);
699 unix_to_nt_time(&now, t);
701 for (i=0; i<el->num_values; i++) {
702 struct ldb_val *v = &el->values[i];
703 struct dsdb_dn *dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, v, sa->syntax->ldap_oid);
704 struct GUID target_guid;
708 /* note that the DN already has the extended
709 components from the extended_dn_store module */
710 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &target_guid, "GUID");
711 if (!NT_STATUS_IS_OK(status) || GUID_all_zero(&target_guid)) {
712 ret = dsdb_module_guid_by_dn(module, dsdb_dn->dn, &target_guid, parent);
713 if (ret != LDB_SUCCESS) {
714 talloc_free(tmp_ctx);
717 ret = dsdb_set_extended_dn_guid(dsdb_dn->dn, &target_guid, "GUID");
718 if (ret != LDB_SUCCESS) {
719 talloc_free(tmp_ctx);
724 ret = replmd_build_la_val(el->values, v, dsdb_dn, invocationId,
725 seq_num, seq_num, now, 0, false);
726 if (ret != LDB_SUCCESS) {
727 talloc_free(tmp_ctx);
731 ret = replmd_add_backlink(module, schema, guid, &target_guid, true, sa, false);
732 if (ret != LDB_SUCCESS) {
733 talloc_free(tmp_ctx);
738 talloc_free(tmp_ctx);
744 intercept add requests
746 static int replmd_add(struct ldb_module *module, struct ldb_request *req)
748 struct ldb_context *ldb;
749 struct ldb_control *control;
750 struct replmd_replicated_request *ac;
751 enum ndr_err_code ndr_err;
752 struct ldb_request *down_req;
753 struct ldb_message *msg;
754 const DATA_BLOB *guid_blob;
756 struct replPropertyMetaDataBlob nmd;
757 struct ldb_val nmd_value;
758 const struct GUID *our_invocation_id;
759 time_t t = time(NULL);
764 unsigned int functional_level;
766 bool allow_add_guid = false;
767 bool remove_current_guid = false;
768 bool is_urgent = false;
769 struct ldb_message_element *objectclass_el;
771 /* check if there's a show relax control (used by provision to say 'I know what I'm doing') */
772 control = ldb_request_get_control(req, LDB_CONTROL_RELAX_OID);
774 allow_add_guid = true;
777 /* do not manipulate our control entries */
778 if (ldb_dn_is_special(req->op.add.message->dn)) {
779 return ldb_next_request(module, req);
782 ldb = ldb_module_get_ctx(module);
784 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_add\n");
786 guid_blob = ldb_msg_find_ldb_val(req->op.add.message, "objectGUID");
787 if (guid_blob != NULL) {
788 if (!allow_add_guid) {
789 ldb_set_errstring(ldb,
790 "replmd_add: it's not allowed to add an object with objectGUID!");
791 return LDB_ERR_UNWILLING_TO_PERFORM;
793 NTSTATUS status = GUID_from_data_blob(guid_blob,&guid);
794 if (!NT_STATUS_IS_OK(status)) {
795 ldb_set_errstring(ldb,
796 "replmd_add: Unable to parse the 'objectGUID' as a GUID!");
797 return LDB_ERR_UNWILLING_TO_PERFORM;
799 /* we remove this attribute as it can be a string and
800 * will not be treated correctly and then we will re-add
801 * it later on in the good format */
802 remove_current_guid = true;
806 guid = GUID_random();
809 ac = replmd_ctx_init(module, req);
811 return ldb_module_oom(module);
814 functional_level = dsdb_functional_level(ldb);
816 /* Get a sequence number from the backend */
817 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ac->seq_num);
818 if (ret != LDB_SUCCESS) {
823 /* get our invocationId */
824 our_invocation_id = samdb_ntds_invocation_id(ldb);
825 if (!our_invocation_id) {
826 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
827 "replmd_add: unable to find invocationId\n");
829 return LDB_ERR_OPERATIONS_ERROR;
832 /* we have to copy the message as the caller might have it as a const */
833 msg = ldb_msg_copy_shallow(ac, req->op.add.message);
837 return LDB_ERR_OPERATIONS_ERROR;
840 /* generated times */
841 unix_to_nt_time(&now, t);
842 time_str = ldb_timestring(msg, t);
846 return LDB_ERR_OPERATIONS_ERROR;
848 if (remove_current_guid) {
849 ldb_msg_remove_attr(msg,"objectGUID");
853 * remove autogenerated attributes
855 ldb_msg_remove_attr(msg, "whenCreated");
856 ldb_msg_remove_attr(msg, "whenChanged");
857 ldb_msg_remove_attr(msg, "uSNCreated");
858 ldb_msg_remove_attr(msg, "uSNChanged");
859 ldb_msg_remove_attr(msg, "replPropertyMetaData");
862 * readd replicated attributes
864 ret = ldb_msg_add_string(msg, "whenCreated", time_str);
865 if (ret != LDB_SUCCESS) {
871 /* build the replication meta_data */
874 nmd.ctr.ctr1.count = msg->num_elements;
875 nmd.ctr.ctr1.array = talloc_array(msg,
876 struct replPropertyMetaData1,
878 if (!nmd.ctr.ctr1.array) {
881 return LDB_ERR_OPERATIONS_ERROR;
884 for (i=0; i < msg->num_elements; i++) {
885 struct ldb_message_element *e = &msg->elements[i];
886 struct replPropertyMetaData1 *m = &nmd.ctr.ctr1.array[ni];
887 const struct dsdb_attribute *sa;
889 if (e->name[0] == '@') continue;
891 sa = dsdb_attribute_by_lDAPDisplayName(ac->schema, e->name);
893 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
894 "replmd_add: attribute '%s' not defined in schema\n",
897 return LDB_ERR_NO_SUCH_ATTRIBUTE;
900 if ((sa->systemFlags & DS_FLAG_ATTR_NOT_REPLICATED) || (sa->systemFlags & DS_FLAG_ATTR_IS_CONSTRUCTED)) {
901 /* if the attribute is not replicated (0x00000001)
902 * or constructed (0x00000004) it has no metadata
907 if (sa->linkID != 0 && functional_level > DS_DOMAIN_FUNCTION_2000) {
908 ret = replmd_add_fix_la(module, e, ac->seq_num, our_invocation_id, t, &guid, sa, req);
909 if (ret != LDB_SUCCESS) {
913 /* linked attributes are not stored in
914 replPropertyMetaData in FL above w2k */
918 m->attid = sa->attributeID_id;
920 m->originating_change_time = now;
921 m->originating_invocation_id = *our_invocation_id;
922 m->originating_usn = ac->seq_num;
923 m->local_usn = ac->seq_num;
927 /* fix meta data count */
928 nmd.ctr.ctr1.count = ni;
931 * sort meta data array, and move the rdn attribute entry to the end
933 ret = replmd_replPropertyMetaDataCtr1_sort(&nmd.ctr.ctr1, ac->schema, msg->dn);
934 if (ret != LDB_SUCCESS) {
939 /* generated NDR encoded values */
940 ndr_err = ndr_push_struct_blob(&nmd_value, msg,
942 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
943 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
946 return LDB_ERR_OPERATIONS_ERROR;
950 * add the autogenerated values
952 ret = dsdb_msg_add_guid(msg, &guid, "objectGUID");
953 if (ret != LDB_SUCCESS) {
958 ret = ldb_msg_add_string(msg, "whenChanged", time_str);
959 if (ret != LDB_SUCCESS) {
964 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNCreated", ac->seq_num);
965 if (ret != LDB_SUCCESS) {
970 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ac->seq_num);
971 if (ret != LDB_SUCCESS) {
976 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &nmd_value, NULL);
977 if (ret != LDB_SUCCESS) {
984 * sort the attributes by attid before storing the object
986 replmd_ldb_message_sort(msg, ac->schema);
988 objectclass_el = ldb_msg_find_element(msg, "objectClass");
989 is_urgent = replmd_check_urgent_objectclass(objectclass_el,
990 REPL_URGENT_ON_CREATE);
992 ac->is_urgent = is_urgent;
993 ret = ldb_build_add_req(&down_req, ldb, ac,
996 ac, replmd_op_callback,
999 LDB_REQ_SET_LOCATION(down_req);
1000 if (ret != LDB_SUCCESS) {
1005 /* current partition control is needed by "replmd_op_callback" */
1006 if (ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID) == NULL) {
1007 ret = ldb_request_add_control(down_req,
1008 DSDB_CONTROL_CURRENT_PARTITION_OID,
1010 if (ret != LDB_SUCCESS) {
1016 if (functional_level == DS_DOMAIN_FUNCTION_2000) {
1017 ret = ldb_request_add_control(down_req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
1018 if (ret != LDB_SUCCESS) {
1024 /* mark the control done */
1026 control->critical = 0;
1029 /* go on with the call chain */
1030 return ldb_next_request(module, down_req);
1035 * update the replPropertyMetaData for one element
1037 static int replmd_update_rpmd_element(struct ldb_context *ldb,
1038 struct ldb_message *msg,
1039 struct ldb_message_element *el,
1040 struct ldb_message_element *old_el,
1041 struct replPropertyMetaDataBlob *omd,
1042 const struct dsdb_schema *schema,
1044 const struct GUID *our_invocation_id,
1046 struct ldb_request *req)
1049 const struct dsdb_attribute *a;
1050 struct replPropertyMetaData1 *md1;
1052 a = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
1054 if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID)) {
1055 /* allow this to make it possible for dbcheck
1056 to remove bad attributes */
1060 DEBUG(0,(__location__ ": Unable to find attribute %s in schema\n",
1062 return LDB_ERR_OPERATIONS_ERROR;
1065 if ((a->systemFlags & DS_FLAG_ATTR_NOT_REPLICATED) || (a->systemFlags & DS_FLAG_ATTR_IS_CONSTRUCTED)) {
1069 /* if the attribute's value haven't changed then return LDB_SUCCESS */
1070 if (old_el != NULL && ldb_msg_element_compare(el, old_el) == 0) {
1071 if (!ldb_request_get_control(req, LDB_CONTROL_PROVISION_OID)) {
1073 * allow this to make it possible for dbcheck
1074 * to rebuild broken metadata
1080 for (i=0; i<omd->ctr.ctr1.count; i++) {
1081 if (a->attributeID_id == omd->ctr.ctr1.array[i].attid) break;
1084 if (a->linkID != 0 && dsdb_functional_level(ldb) > DS_DOMAIN_FUNCTION_2000) {
1085 /* linked attributes are not stored in
1086 replPropertyMetaData in FL above w2k, but we do
1087 raise the seqnum for the object */
1088 if (*seq_num == 0 &&
1089 ldb_sequence_number(ldb, LDB_SEQ_NEXT, seq_num) != LDB_SUCCESS) {
1090 return LDB_ERR_OPERATIONS_ERROR;
1095 if (i == omd->ctr.ctr1.count) {
1096 /* we need to add a new one */
1097 omd->ctr.ctr1.array = talloc_realloc(msg, omd->ctr.ctr1.array,
1098 struct replPropertyMetaData1, omd->ctr.ctr1.count+1);
1099 if (omd->ctr.ctr1.array == NULL) {
1101 return LDB_ERR_OPERATIONS_ERROR;
1103 omd->ctr.ctr1.count++;
1104 ZERO_STRUCT(omd->ctr.ctr1.array[i]);
1107 /* Get a new sequence number from the backend. We only do this
1108 * if we have a change that requires a new
1109 * replPropertyMetaData element
1111 if (*seq_num == 0) {
1112 int ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, seq_num);
1113 if (ret != LDB_SUCCESS) {
1114 return LDB_ERR_OPERATIONS_ERROR;
1118 md1 = &omd->ctr.ctr1.array[i];
1120 md1->attid = a->attributeID_id;
1121 md1->originating_change_time = now;
1122 md1->originating_invocation_id = *our_invocation_id;
1123 md1->originating_usn = *seq_num;
1124 md1->local_usn = *seq_num;
1129 static uint64_t find_max_local_usn(struct replPropertyMetaDataBlob omd)
1131 uint32_t count = omd.ctr.ctr1.count;
1134 for (i=0; i < count; i++) {
1135 struct replPropertyMetaData1 m = omd.ctr.ctr1.array[i];
1136 if (max < m.local_usn) {
1144 * update the replPropertyMetaData object each time we modify an
1145 * object. This is needed for DRS replication, as the merge on the
1146 * client is based on this object
1148 static int replmd_update_rpmd(struct ldb_module *module,
1149 const struct dsdb_schema *schema,
1150 struct ldb_request *req,
1151 const char * const *rename_attrs,
1152 struct ldb_message *msg, uint64_t *seq_num,
1156 const struct ldb_val *omd_value;
1157 enum ndr_err_code ndr_err;
1158 struct replPropertyMetaDataBlob omd;
1161 const struct GUID *our_invocation_id;
1163 const char * const *attrs = NULL;
1164 const char * const attrs1[] = { "replPropertyMetaData", "*", NULL };
1165 const char * const attrs2[] = { "uSNChanged", "objectClass", "instanceType", NULL };
1166 struct ldb_result *res;
1167 struct ldb_context *ldb;
1168 struct ldb_message_element *objectclass_el;
1169 enum urgent_situation situation;
1170 bool rodc, rmd_is_provided;
1173 attrs = rename_attrs;
1178 ldb = ldb_module_get_ctx(module);
1180 our_invocation_id = samdb_ntds_invocation_id(ldb);
1181 if (!our_invocation_id) {
1182 /* this happens during an initial vampire while
1183 updating the schema */
1184 DEBUG(5,("No invocationID - skipping replPropertyMetaData update\n"));
1188 unix_to_nt_time(&now, t);
1190 if (ldb_request_get_control(req, DSDB_CONTROL_CHANGEREPLMETADATA_OID)) {
1191 rmd_is_provided = true;
1193 rmd_is_provided = false;
1196 /* if isDeleted is present and is TRUE, then we consider we are deleting,
1197 * otherwise we consider we are updating */
1198 if (ldb_msg_check_string_attribute(msg, "isDeleted", "TRUE")) {
1199 situation = REPL_URGENT_ON_DELETE;
1200 } else if (rename_attrs) {
1201 situation = REPL_URGENT_ON_CREATE | REPL_URGENT_ON_DELETE;
1203 situation = REPL_URGENT_ON_UPDATE;
1206 if (rmd_is_provided) {
1207 /* In this case the change_replmetadata control was supplied */
1208 /* We check that it's the only attribute that is provided
1209 * (it's a rare case so it's better to keep the code simplier)
1210 * We also check that the highest local_usn is bigger than
1213 if( msg->num_elements != 1 ||
1214 strncmp(msg->elements[0].name,
1215 "replPropertyMetaData", 20) ) {
1216 DEBUG(0,(__location__ ": changereplmetada control called without "\
1217 "a specified replPropertyMetaData attribute or with others\n"));
1218 return LDB_ERR_OPERATIONS_ERROR;
1220 if (situation != REPL_URGENT_ON_UPDATE) {
1221 DEBUG(0,(__location__ ": changereplmetada control can't be called when deleting an object\n"));
1222 return LDB_ERR_OPERATIONS_ERROR;
1224 omd_value = ldb_msg_find_ldb_val(msg, "replPropertyMetaData");
1226 DEBUG(0,(__location__ ": replPropertyMetaData was not specified for Object %s\n",
1227 ldb_dn_get_linearized(msg->dn)));
1228 return LDB_ERR_OPERATIONS_ERROR;
1230 ndr_err = ndr_pull_struct_blob(omd_value, msg, &omd,
1231 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
1232 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1233 DEBUG(0,(__location__ ": Failed to parse replPropertyMetaData for %s\n",
1234 ldb_dn_get_linearized(msg->dn)));
1235 return LDB_ERR_OPERATIONS_ERROR;
1237 *seq_num = find_max_local_usn(omd);
1239 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, attrs2,
1240 DSDB_FLAG_NEXT_MODULE |
1241 DSDB_SEARCH_SHOW_RECYCLED |
1242 DSDB_SEARCH_SHOW_EXTENDED_DN |
1243 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
1244 DSDB_SEARCH_REVEAL_INTERNALS, req);
1246 if (ret != LDB_SUCCESS) {
1247 DEBUG(0,(__location__ ": Object %s failed to find uSNChanged\n",
1248 ldb_dn_get_linearized(msg->dn)));
1252 objectclass_el = ldb_msg_find_element(res->msgs[0], "objectClass");
1253 if (is_urgent && replmd_check_urgent_objectclass(objectclass_el,
1258 db_seq = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNChanged", 0);
1259 if (*seq_num <= db_seq) {
1260 DEBUG(0,(__location__ ": changereplmetada control provided but max(local_usn)"\
1261 " is less or equal to uSNChanged (max = %lld uSNChanged = %lld)\n",
1262 (long long)*seq_num, (long long)db_seq));
1263 return LDB_ERR_OPERATIONS_ERROR;
1267 /* search for the existing replPropertyMetaDataBlob. We need
1268 * to use REVEAL and ask for DNs in storage format to support
1269 * the check for values being the same in
1270 * replmd_update_rpmd_element()
1272 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, attrs,
1273 DSDB_FLAG_NEXT_MODULE |
1274 DSDB_SEARCH_SHOW_RECYCLED |
1275 DSDB_SEARCH_SHOW_EXTENDED_DN |
1276 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
1277 DSDB_SEARCH_REVEAL_INTERNALS, req);
1278 if (ret != LDB_SUCCESS) {
1279 DEBUG(0,(__location__ ": Object %s failed to find replPropertyMetaData\n",
1280 ldb_dn_get_linearized(msg->dn)));
1284 objectclass_el = ldb_msg_find_element(res->msgs[0], "objectClass");
1285 if (is_urgent && replmd_check_urgent_objectclass(objectclass_el,
1290 omd_value = ldb_msg_find_ldb_val(res->msgs[0], "replPropertyMetaData");
1292 DEBUG(0,(__location__ ": Object %s does not have a replPropertyMetaData attribute\n",
1293 ldb_dn_get_linearized(msg->dn)));
1294 return LDB_ERR_OPERATIONS_ERROR;
1297 ndr_err = ndr_pull_struct_blob(omd_value, msg, &omd,
1298 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
1299 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1300 DEBUG(0,(__location__ ": Failed to parse replPropertyMetaData for %s\n",
1301 ldb_dn_get_linearized(msg->dn)));
1302 return LDB_ERR_OPERATIONS_ERROR;
1305 if (omd.version != 1) {
1306 DEBUG(0,(__location__ ": bad version %u in replPropertyMetaData for %s\n",
1307 omd.version, ldb_dn_get_linearized(msg->dn)));
1308 return LDB_ERR_OPERATIONS_ERROR;
1311 for (i=0; i<msg->num_elements; i++) {
1312 struct ldb_message_element *old_el;
1313 old_el = ldb_msg_find_element(res->msgs[0], msg->elements[i].name);
1314 ret = replmd_update_rpmd_element(ldb, msg, &msg->elements[i], old_el, &omd, schema, seq_num,
1315 our_invocation_id, now, req);
1316 if (ret != LDB_SUCCESS) {
1320 if (is_urgent && !*is_urgent && (situation == REPL_URGENT_ON_UPDATE)) {
1321 *is_urgent = replmd_check_urgent_attribute(&msg->elements[i]);
1327 * replmd_update_rpmd_element has done an update if the
1330 if (*seq_num != 0) {
1331 struct ldb_val *md_value;
1332 struct ldb_message_element *el;
1334 /*if we are RODC and this is a DRSR update then its ok*/
1335 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1336 unsigned instanceType;
1338 ret = samdb_rodc(ldb, &rodc);
1339 if (ret != LDB_SUCCESS) {
1340 DEBUG(4, (__location__ ": unable to tell if we are an RODC\n"));
1342 ldb_asprintf_errstring(ldb, "RODC modify is forbidden\n");
1343 return LDB_ERR_REFERRAL;
1346 instanceType = ldb_msg_find_attr_as_uint(res->msgs[0], "instanceType", INSTANCE_TYPE_WRITE);
1347 if (!(instanceType & INSTANCE_TYPE_WRITE)) {
1348 return ldb_error(ldb, LDB_ERR_UNWILLING_TO_PERFORM,
1349 "cannot change replicated attribute on partial replica");
1353 md_value = talloc(msg, struct ldb_val);
1354 if (md_value == NULL) {
1356 return LDB_ERR_OPERATIONS_ERROR;
1359 ret = replmd_replPropertyMetaDataCtr1_sort(&omd.ctr.ctr1, schema, msg->dn);
1360 if (ret != LDB_SUCCESS) {
1364 ndr_err = ndr_push_struct_blob(md_value, msg, &omd,
1365 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
1366 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1367 DEBUG(0,(__location__ ": Failed to marshall replPropertyMetaData for %s\n",
1368 ldb_dn_get_linearized(msg->dn)));
1369 return LDB_ERR_OPERATIONS_ERROR;
1372 ret = ldb_msg_add_empty(msg, "replPropertyMetaData", LDB_FLAG_MOD_REPLACE, &el);
1373 if (ret != LDB_SUCCESS) {
1374 DEBUG(0,(__location__ ": Failed to add updated replPropertyMetaData %s\n",
1375 ldb_dn_get_linearized(msg->dn)));
1380 el->values = md_value;
1387 struct dsdb_dn *dsdb_dn;
1392 static int parsed_dn_compare(struct parsed_dn *pdn1, struct parsed_dn *pdn2)
1394 return GUID_compare(pdn1->guid, pdn2->guid);
1397 static struct parsed_dn *parsed_dn_find(struct parsed_dn *pdn,
1398 unsigned int count, struct GUID *guid,
1401 struct parsed_dn *ret;
1403 if (dn && GUID_all_zero(guid)) {
1404 /* when updating a link using DRS, we sometimes get a
1405 NULL GUID. We then need to try and match by DN */
1406 for (i=0; i<count; i++) {
1407 if (ldb_dn_compare(pdn[i].dsdb_dn->dn, dn) == 0) {
1408 dsdb_get_extended_dn_guid(pdn[i].dsdb_dn->dn, guid, "GUID");
1414 BINARY_ARRAY_SEARCH(pdn, count, guid, guid, GUID_compare, ret);
1419 get a series of message element values as an array of DNs and GUIDs
1420 the result is sorted by GUID
1422 static int get_parsed_dns(struct ldb_module *module, TALLOC_CTX *mem_ctx,
1423 struct ldb_message_element *el, struct parsed_dn **pdn,
1424 const char *ldap_oid, struct ldb_request *parent)
1427 struct ldb_context *ldb = ldb_module_get_ctx(module);
1434 (*pdn) = talloc_array(mem_ctx, struct parsed_dn, el->num_values);
1436 ldb_module_oom(module);
1437 return LDB_ERR_OPERATIONS_ERROR;
1440 for (i=0; i<el->num_values; i++) {
1441 struct ldb_val *v = &el->values[i];
1444 struct parsed_dn *p;
1448 p->dsdb_dn = dsdb_dn_parse(*pdn, ldb, v, ldap_oid);
1449 if (p->dsdb_dn == NULL) {
1450 return LDB_ERR_INVALID_DN_SYNTAX;
1453 dn = p->dsdb_dn->dn;
1455 p->guid = talloc(*pdn, struct GUID);
1456 if (p->guid == NULL) {
1457 ldb_module_oom(module);
1458 return LDB_ERR_OPERATIONS_ERROR;
1461 status = dsdb_get_extended_dn_guid(dn, p->guid, "GUID");
1462 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1463 /* we got a DN without a GUID - go find the GUID */
1464 int ret = dsdb_module_guid_by_dn(module, dn, p->guid, parent);
1465 if (ret != LDB_SUCCESS) {
1466 ldb_asprintf_errstring(ldb, "Unable to find GUID for DN %s\n",
1467 ldb_dn_get_linearized(dn));
1468 if (ret == LDB_ERR_NO_SUCH_OBJECT &&
1469 LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE &&
1470 ldb_attr_cmp(el->name, "member") == 0) {
1471 return LDB_ERR_UNWILLING_TO_PERFORM;
1475 ret = dsdb_set_extended_dn_guid(dn, p->guid, "GUID");
1476 if (ret != LDB_SUCCESS) {
1479 } else if (!NT_STATUS_IS_OK(status)) {
1480 return LDB_ERR_OPERATIONS_ERROR;
1483 /* keep a pointer to the original ldb_val */
1487 TYPESAFE_QSORT(*pdn, el->num_values, parsed_dn_compare);
1493 build a new extended DN, including all meta data fields
1495 RMD_FLAGS = DSDB_RMD_FLAG_* bits
1496 RMD_ADDTIME = originating_add_time
1497 RMD_INVOCID = originating_invocation_id
1498 RMD_CHANGETIME = originating_change_time
1499 RMD_ORIGINATING_USN = originating_usn
1500 RMD_LOCAL_USN = local_usn
1501 RMD_VERSION = version
1503 static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1504 const struct GUID *invocation_id, uint64_t seq_num,
1505 uint64_t local_usn, NTTIME nttime, uint32_t version, bool deleted)
1507 struct ldb_dn *dn = dsdb_dn->dn;
1508 const char *tstring, *usn_string, *flags_string;
1509 struct ldb_val tval;
1511 struct ldb_val usnv, local_usnv;
1512 struct ldb_val vers, flagsv;
1515 const char *dnstring;
1517 uint32_t rmd_flags = deleted?DSDB_RMD_FLAG_DELETED:0;
1519 tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)nttime);
1521 return LDB_ERR_OPERATIONS_ERROR;
1523 tval = data_blob_string_const(tstring);
1525 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)seq_num);
1527 return LDB_ERR_OPERATIONS_ERROR;
1529 usnv = data_blob_string_const(usn_string);
1531 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)local_usn);
1533 return LDB_ERR_OPERATIONS_ERROR;
1535 local_usnv = data_blob_string_const(usn_string);
1537 vstring = talloc_asprintf(mem_ctx, "%lu", (unsigned long)version);
1539 return LDB_ERR_OPERATIONS_ERROR;
1541 vers = data_blob_string_const(vstring);
1543 status = GUID_to_ndr_blob(invocation_id, dn, &iid);
1544 if (!NT_STATUS_IS_OK(status)) {
1545 return LDB_ERR_OPERATIONS_ERROR;
1548 flags_string = talloc_asprintf(mem_ctx, "%u", rmd_flags);
1549 if (!flags_string) {
1550 return LDB_ERR_OPERATIONS_ERROR;
1552 flagsv = data_blob_string_const(flags_string);
1554 ret = ldb_dn_set_extended_component(dn, "RMD_FLAGS", &flagsv);
1555 if (ret != LDB_SUCCESS) return ret;
1556 ret = ldb_dn_set_extended_component(dn, "RMD_ADDTIME", &tval);
1557 if (ret != LDB_SUCCESS) return ret;
1558 ret = ldb_dn_set_extended_component(dn, "RMD_INVOCID", &iid);
1559 if (ret != LDB_SUCCESS) return ret;
1560 ret = ldb_dn_set_extended_component(dn, "RMD_CHANGETIME", &tval);
1561 if (ret != LDB_SUCCESS) return ret;
1562 ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &local_usnv);
1563 if (ret != LDB_SUCCESS) return ret;
1564 ret = ldb_dn_set_extended_component(dn, "RMD_ORIGINATING_USN", &usnv);
1565 if (ret != LDB_SUCCESS) return ret;
1566 ret = ldb_dn_set_extended_component(dn, "RMD_VERSION", &vers);
1567 if (ret != LDB_SUCCESS) return ret;
1569 dnstring = dsdb_dn_get_extended_linearized(mem_ctx, dsdb_dn, 1);
1570 if (dnstring == NULL) {
1571 return LDB_ERR_OPERATIONS_ERROR;
1573 *v = data_blob_string_const(dnstring);
1578 static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1579 struct dsdb_dn *old_dsdb_dn, const struct GUID *invocation_id,
1580 uint64_t seq_num, uint64_t local_usn, NTTIME nttime,
1581 uint32_t version, bool deleted);
1584 check if any links need upgrading from w2k format
1586 The parent_ctx is the ldb_message_element which contains the values array that dns[i].v points at, and which should be used for allocating any new value.
1588 static int replmd_check_upgrade_links(struct parsed_dn *dns, uint32_t count, struct ldb_message_element *parent_ctx, const struct GUID *invocation_id)
1591 for (i=0; i<count; i++) {
1596 status = dsdb_get_extended_dn_uint32(dns[i].dsdb_dn->dn, &version, "RMD_VERSION");
1597 if (!NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1601 /* it's an old one that needs upgrading */
1602 ret = replmd_update_la_val(parent_ctx->values, dns[i].v, dns[i].dsdb_dn, dns[i].dsdb_dn, invocation_id,
1604 if (ret != LDB_SUCCESS) {
1612 update an extended DN, including all meta data fields
1614 see replmd_build_la_val for value names
1616 static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1617 struct dsdb_dn *old_dsdb_dn, const struct GUID *invocation_id,
1618 uint64_t seq_num, uint64_t local_usn, NTTIME nttime,
1619 uint32_t version, bool deleted)
1621 struct ldb_dn *dn = dsdb_dn->dn;
1622 const char *tstring, *usn_string, *flags_string;
1623 struct ldb_val tval;
1625 struct ldb_val usnv, local_usnv;
1626 struct ldb_val vers, flagsv;
1627 const struct ldb_val *old_addtime;
1628 uint32_t old_version;
1631 const char *dnstring;
1633 uint32_t rmd_flags = deleted?DSDB_RMD_FLAG_DELETED:0;
1635 tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)nttime);
1637 return LDB_ERR_OPERATIONS_ERROR;
1639 tval = data_blob_string_const(tstring);
1641 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)seq_num);
1643 return LDB_ERR_OPERATIONS_ERROR;
1645 usnv = data_blob_string_const(usn_string);
1647 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)local_usn);
1649 return LDB_ERR_OPERATIONS_ERROR;
1651 local_usnv = data_blob_string_const(usn_string);
1653 status = GUID_to_ndr_blob(invocation_id, dn, &iid);
1654 if (!NT_STATUS_IS_OK(status)) {
1655 return LDB_ERR_OPERATIONS_ERROR;
1658 flags_string = talloc_asprintf(mem_ctx, "%u", rmd_flags);
1659 if (!flags_string) {
1660 return LDB_ERR_OPERATIONS_ERROR;
1662 flagsv = data_blob_string_const(flags_string);
1664 ret = ldb_dn_set_extended_component(dn, "RMD_FLAGS", &flagsv);
1665 if (ret != LDB_SUCCESS) return ret;
1667 /* get the ADDTIME from the original */
1668 old_addtime = ldb_dn_get_extended_component(old_dsdb_dn->dn, "RMD_ADDTIME");
1669 if (old_addtime == NULL) {
1670 old_addtime = &tval;
1672 if (dsdb_dn != old_dsdb_dn ||
1673 ldb_dn_get_extended_component(dn, "RMD_ADDTIME") == NULL) {
1674 ret = ldb_dn_set_extended_component(dn, "RMD_ADDTIME", old_addtime);
1675 if (ret != LDB_SUCCESS) return ret;
1678 /* use our invocation id */
1679 ret = ldb_dn_set_extended_component(dn, "RMD_INVOCID", &iid);
1680 if (ret != LDB_SUCCESS) return ret;
1682 /* changetime is the current time */
1683 ret = ldb_dn_set_extended_component(dn, "RMD_CHANGETIME", &tval);
1684 if (ret != LDB_SUCCESS) return ret;
1686 /* update the USN */
1687 ret = ldb_dn_set_extended_component(dn, "RMD_ORIGINATING_USN", &usnv);
1688 if (ret != LDB_SUCCESS) return ret;
1690 ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &local_usnv);
1691 if (ret != LDB_SUCCESS) return ret;
1693 /* increase the version by 1 */
1694 status = dsdb_get_extended_dn_uint32(old_dsdb_dn->dn, &old_version, "RMD_VERSION");
1695 if (NT_STATUS_IS_OK(status) && old_version >= version) {
1696 version = old_version+1;
1698 vstring = talloc_asprintf(dn, "%lu", (unsigned long)version);
1699 vers = data_blob_string_const(vstring);
1700 ret = ldb_dn_set_extended_component(dn, "RMD_VERSION", &vers);
1701 if (ret != LDB_SUCCESS) return ret;
1703 dnstring = dsdb_dn_get_extended_linearized(mem_ctx, dsdb_dn, 1);
1704 if (dnstring == NULL) {
1705 return LDB_ERR_OPERATIONS_ERROR;
1707 *v = data_blob_string_const(dnstring);
1713 handle adding a linked attribute
1715 static int replmd_modify_la_add(struct ldb_module *module,
1716 const struct dsdb_schema *schema,
1717 struct ldb_message *msg,
1718 struct ldb_message_element *el,
1719 struct ldb_message_element *old_el,
1720 const struct dsdb_attribute *schema_attr,
1723 struct GUID *msg_guid,
1724 struct ldb_request *parent)
1727 struct parsed_dn *dns, *old_dns;
1728 TALLOC_CTX *tmp_ctx = talloc_new(msg);
1730 struct ldb_val *new_values = NULL;
1731 unsigned int num_new_values = 0;
1732 unsigned old_num_values = old_el?old_el->num_values:0;
1733 const struct GUID *invocation_id;
1734 struct ldb_context *ldb = ldb_module_get_ctx(module);
1737 unix_to_nt_time(&now, t);
1739 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid, parent);
1740 if (ret != LDB_SUCCESS) {
1741 talloc_free(tmp_ctx);
1745 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid, parent);
1746 if (ret != LDB_SUCCESS) {
1747 talloc_free(tmp_ctx);
1751 invocation_id = samdb_ntds_invocation_id(ldb);
1752 if (!invocation_id) {
1753 talloc_free(tmp_ctx);
1754 return LDB_ERR_OPERATIONS_ERROR;
1757 ret = replmd_check_upgrade_links(old_dns, old_num_values, old_el, invocation_id);
1758 if (ret != LDB_SUCCESS) {
1759 talloc_free(tmp_ctx);
1763 /* for each new value, see if it exists already with the same GUID */
1764 for (i=0; i<el->num_values; i++) {
1765 struct parsed_dn *p = parsed_dn_find(old_dns, old_num_values, dns[i].guid, NULL);
1767 /* this is a new linked attribute value */
1768 new_values = talloc_realloc(tmp_ctx, new_values, struct ldb_val, num_new_values+1);
1769 if (new_values == NULL) {
1770 ldb_module_oom(module);
1771 talloc_free(tmp_ctx);
1772 return LDB_ERR_OPERATIONS_ERROR;
1774 ret = replmd_build_la_val(new_values, &new_values[num_new_values], dns[i].dsdb_dn,
1775 invocation_id, seq_num, seq_num, now, 0, false);
1776 if (ret != LDB_SUCCESS) {
1777 talloc_free(tmp_ctx);
1782 /* this is only allowed if the GUID was
1783 previously deleted. */
1784 uint32_t rmd_flags = dsdb_dn_rmd_flags(p->dsdb_dn->dn);
1786 if (!(rmd_flags & DSDB_RMD_FLAG_DELETED)) {
1787 ldb_asprintf_errstring(ldb, "Attribute %s already exists for target GUID %s",
1788 el->name, GUID_string(tmp_ctx, p->guid));
1789 talloc_free(tmp_ctx);
1790 /* error codes for 'member' need to be
1792 if (ldb_attr_cmp(el->name, "member") == 0) {
1793 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1795 return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
1798 ret = replmd_update_la_val(old_el->values, p->v, dns[i].dsdb_dn, p->dsdb_dn,
1799 invocation_id, seq_num, seq_num, now, 0, false);
1800 if (ret != LDB_SUCCESS) {
1801 talloc_free(tmp_ctx);
1806 ret = replmd_add_backlink(module, schema, msg_guid, dns[i].guid, true, schema_attr, true);
1807 if (ret != LDB_SUCCESS) {
1808 talloc_free(tmp_ctx);
1813 /* add the new ones on to the end of the old values, constructing a new el->values */
1814 el->values = talloc_realloc(msg->elements, old_el?old_el->values:NULL,
1816 old_num_values+num_new_values);
1817 if (el->values == NULL) {
1818 ldb_module_oom(module);
1819 return LDB_ERR_OPERATIONS_ERROR;
1822 memcpy(&el->values[old_num_values], new_values, num_new_values*sizeof(struct ldb_val));
1823 el->num_values = old_num_values + num_new_values;
1825 talloc_steal(msg->elements, el->values);
1826 talloc_steal(el->values, new_values);
1828 talloc_free(tmp_ctx);
1830 /* we now tell the backend to replace all existing values
1831 with the one we have constructed */
1832 el->flags = LDB_FLAG_MOD_REPLACE;
1839 handle deleting all active linked attributes
1841 static int replmd_modify_la_delete(struct ldb_module *module,
1842 const struct dsdb_schema *schema,
1843 struct ldb_message *msg,
1844 struct ldb_message_element *el,
1845 struct ldb_message_element *old_el,
1846 const struct dsdb_attribute *schema_attr,
1849 struct GUID *msg_guid,
1850 struct ldb_request *parent)
1853 struct parsed_dn *dns, *old_dns;
1854 TALLOC_CTX *tmp_ctx = talloc_new(msg);
1856 const struct GUID *invocation_id;
1857 struct ldb_context *ldb = ldb_module_get_ctx(module);
1860 unix_to_nt_time(&now, t);
1862 /* check if there is nothing to delete */
1863 if ((!old_el || old_el->num_values == 0) &&
1864 el->num_values == 0) {
1868 if (!old_el || old_el->num_values == 0) {
1869 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1872 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid, parent);
1873 if (ret != LDB_SUCCESS) {
1874 talloc_free(tmp_ctx);
1878 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid, parent);
1879 if (ret != LDB_SUCCESS) {
1880 talloc_free(tmp_ctx);
1884 invocation_id = samdb_ntds_invocation_id(ldb);
1885 if (!invocation_id) {
1886 return LDB_ERR_OPERATIONS_ERROR;
1889 ret = replmd_check_upgrade_links(old_dns, old_el->num_values, old_el, invocation_id);
1890 if (ret != LDB_SUCCESS) {
1891 talloc_free(tmp_ctx);
1897 /* see if we are being asked to delete any links that
1898 don't exist or are already deleted */
1899 for (i=0; i<el->num_values; i++) {
1900 struct parsed_dn *p = &dns[i];
1901 struct parsed_dn *p2;
1904 p2 = parsed_dn_find(old_dns, old_el->num_values, p->guid, NULL);
1906 ldb_asprintf_errstring(ldb, "Attribute %s doesn't exist for target GUID %s",
1907 el->name, GUID_string(tmp_ctx, p->guid));
1908 if (ldb_attr_cmp(el->name, "member") == 0) {
1909 return LDB_ERR_UNWILLING_TO_PERFORM;
1911 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1914 rmd_flags = dsdb_dn_rmd_flags(p2->dsdb_dn->dn);
1915 if (rmd_flags & DSDB_RMD_FLAG_DELETED) {
1916 ldb_asprintf_errstring(ldb, "Attribute %s already deleted for target GUID %s",
1917 el->name, GUID_string(tmp_ctx, p->guid));
1918 if (ldb_attr_cmp(el->name, "member") == 0) {
1919 return LDB_ERR_UNWILLING_TO_PERFORM;
1921 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1926 /* for each new value, see if it exists already with the same GUID
1927 if it is not already deleted and matches the delete list then delete it
1929 for (i=0; i<old_el->num_values; i++) {
1930 struct parsed_dn *p = &old_dns[i];
1933 if (el->num_values && parsed_dn_find(dns, el->num_values, p->guid, NULL) == NULL) {
1937 rmd_flags = dsdb_dn_rmd_flags(p->dsdb_dn->dn);
1938 if (rmd_flags & DSDB_RMD_FLAG_DELETED) continue;
1940 ret = replmd_update_la_val(old_el->values, p->v, p->dsdb_dn, p->dsdb_dn,
1941 invocation_id, seq_num, seq_num, now, 0, true);
1942 if (ret != LDB_SUCCESS) {
1943 talloc_free(tmp_ctx);
1947 ret = replmd_add_backlink(module, schema, msg_guid, old_dns[i].guid, false, schema_attr, true);
1948 if (ret != LDB_SUCCESS) {
1949 talloc_free(tmp_ctx);
1954 el->values = talloc_steal(msg->elements, old_el->values);
1955 el->num_values = old_el->num_values;
1957 talloc_free(tmp_ctx);
1959 /* we now tell the backend to replace all existing values
1960 with the one we have constructed */
1961 el->flags = LDB_FLAG_MOD_REPLACE;
1967 handle replacing a linked attribute
1969 static int replmd_modify_la_replace(struct ldb_module *module,
1970 const struct dsdb_schema *schema,
1971 struct ldb_message *msg,
1972 struct ldb_message_element *el,
1973 struct ldb_message_element *old_el,
1974 const struct dsdb_attribute *schema_attr,
1977 struct GUID *msg_guid,
1978 struct ldb_request *parent)
1981 struct parsed_dn *dns, *old_dns;
1982 TALLOC_CTX *tmp_ctx = talloc_new(msg);
1984 const struct GUID *invocation_id;
1985 struct ldb_context *ldb = ldb_module_get_ctx(module);
1986 struct ldb_val *new_values = NULL;
1987 unsigned int num_new_values = 0;
1988 unsigned int old_num_values = old_el?old_el->num_values:0;
1991 unix_to_nt_time(&now, t);
1993 /* check if there is nothing to replace */
1994 if ((!old_el || old_el->num_values == 0) &&
1995 el->num_values == 0) {
1999 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid, parent);
2000 if (ret != LDB_SUCCESS) {
2001 talloc_free(tmp_ctx);
2005 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid, parent);
2006 if (ret != LDB_SUCCESS) {
2007 talloc_free(tmp_ctx);
2011 invocation_id = samdb_ntds_invocation_id(ldb);
2012 if (!invocation_id) {
2013 return LDB_ERR_OPERATIONS_ERROR;
2016 ret = replmd_check_upgrade_links(old_dns, old_num_values, old_el, invocation_id);
2017 if (ret != LDB_SUCCESS) {
2018 talloc_free(tmp_ctx);
2022 /* mark all the old ones as deleted */
2023 for (i=0; i<old_num_values; i++) {
2024 struct parsed_dn *old_p = &old_dns[i];
2025 struct parsed_dn *p;
2026 uint32_t rmd_flags = dsdb_dn_rmd_flags(old_p->dsdb_dn->dn);
2028 if (rmd_flags & DSDB_RMD_FLAG_DELETED) continue;
2030 ret = replmd_add_backlink(module, schema, msg_guid, old_dns[i].guid, false, schema_attr, false);
2031 if (ret != LDB_SUCCESS) {
2032 talloc_free(tmp_ctx);
2036 p = parsed_dn_find(dns, el->num_values, old_p->guid, NULL);
2038 /* we don't delete it if we are re-adding it */
2042 ret = replmd_update_la_val(old_el->values, old_p->v, old_p->dsdb_dn, old_p->dsdb_dn,
2043 invocation_id, seq_num, seq_num, now, 0, true);
2044 if (ret != LDB_SUCCESS) {
2045 talloc_free(tmp_ctx);
2050 /* for each new value, either update its meta-data, or add it
2053 for (i=0; i<el->num_values; i++) {
2054 struct parsed_dn *p = &dns[i], *old_p;
2057 (old_p = parsed_dn_find(old_dns,
2058 old_num_values, p->guid, NULL)) != NULL) {
2059 /* update in place */
2060 ret = replmd_update_la_val(old_el->values, old_p->v, p->dsdb_dn,
2061 old_p->dsdb_dn, invocation_id,
2062 seq_num, seq_num, now, 0, false);
2063 if (ret != LDB_SUCCESS) {
2064 talloc_free(tmp_ctx);
2069 new_values = talloc_realloc(tmp_ctx, new_values, struct ldb_val,
2071 if (new_values == NULL) {
2072 ldb_module_oom(module);
2073 talloc_free(tmp_ctx);
2074 return LDB_ERR_OPERATIONS_ERROR;
2076 ret = replmd_build_la_val(new_values, &new_values[num_new_values], dns[i].dsdb_dn,
2077 invocation_id, seq_num, seq_num, now, 0, false);
2078 if (ret != LDB_SUCCESS) {
2079 talloc_free(tmp_ctx);
2085 ret = replmd_add_backlink(module, schema, msg_guid, dns[i].guid, true, schema_attr, false);
2086 if (ret != LDB_SUCCESS) {
2087 talloc_free(tmp_ctx);
2092 /* add the new values to the end of old_el */
2093 if (num_new_values != 0) {
2094 el->values = talloc_realloc(msg->elements, old_el?old_el->values:NULL,
2095 struct ldb_val, old_num_values+num_new_values);
2096 if (el->values == NULL) {
2097 ldb_module_oom(module);
2098 return LDB_ERR_OPERATIONS_ERROR;
2100 memcpy(&el->values[old_num_values], &new_values[0],
2101 sizeof(struct ldb_val)*num_new_values);
2102 el->num_values = old_num_values + num_new_values;
2103 talloc_steal(msg->elements, new_values);
2105 el->values = old_el->values;
2106 el->num_values = old_el->num_values;
2107 talloc_steal(msg->elements, el->values);
2110 talloc_free(tmp_ctx);
2112 /* we now tell the backend to replace all existing values
2113 with the one we have constructed */
2114 el->flags = LDB_FLAG_MOD_REPLACE;
2121 handle linked attributes in modify requests
2123 static int replmd_modify_handle_linked_attribs(struct ldb_module *module,
2124 struct ldb_message *msg,
2125 uint64_t seq_num, time_t t,
2126 struct ldb_request *parent)
2128 struct ldb_result *res;
2131 struct ldb_context *ldb = ldb_module_get_ctx(module);
2132 struct ldb_message *old_msg;
2134 const struct dsdb_schema *schema;
2135 struct GUID old_guid;
2138 /* there the replmd_update_rpmd code has already
2139 * checked and saw that there are no linked
2144 if (dsdb_functional_level(ldb) == DS_DOMAIN_FUNCTION_2000) {
2145 /* don't do anything special for linked attributes */
2149 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, NULL,
2150 DSDB_FLAG_NEXT_MODULE |
2151 DSDB_SEARCH_SHOW_RECYCLED |
2152 DSDB_SEARCH_REVEAL_INTERNALS |
2153 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT,
2155 if (ret != LDB_SUCCESS) {
2158 schema = dsdb_get_schema(ldb, res);
2160 return LDB_ERR_OPERATIONS_ERROR;
2163 old_msg = res->msgs[0];
2165 old_guid = samdb_result_guid(old_msg, "objectGUID");
2167 for (i=0; i<msg->num_elements; i++) {
2168 struct ldb_message_element *el = &msg->elements[i];
2169 struct ldb_message_element *old_el, *new_el;
2170 const struct dsdb_attribute *schema_attr
2171 = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
2173 ldb_asprintf_errstring(ldb,
2174 "%s: attribute %s is not a valid attribute in schema",
2175 __FUNCTION__, el->name);
2176 return LDB_ERR_OBJECT_CLASS_VIOLATION;
2178 if (schema_attr->linkID == 0) {
2181 if ((schema_attr->linkID & 1) == 1) {
2182 if (parent && ldb_request_get_control(parent, DSDB_CONTROL_DBCHECK)) {
2185 /* Odd is for the target. Illegal to modify */
2186 ldb_asprintf_errstring(ldb,
2187 "attribute %s must not be modified directly, it is a linked attribute", el->name);
2188 return LDB_ERR_UNWILLING_TO_PERFORM;
2190 old_el = ldb_msg_find_element(old_msg, el->name);
2191 switch (el->flags & LDB_FLAG_MOD_MASK) {
2192 case LDB_FLAG_MOD_REPLACE:
2193 ret = replmd_modify_la_replace(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid, parent);
2195 case LDB_FLAG_MOD_DELETE:
2196 ret = replmd_modify_la_delete(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid, parent);
2198 case LDB_FLAG_MOD_ADD:
2199 ret = replmd_modify_la_add(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid, parent);
2202 ldb_asprintf_errstring(ldb,
2203 "invalid flags 0x%x for %s linked attribute",
2204 el->flags, el->name);
2205 return LDB_ERR_UNWILLING_TO_PERFORM;
2207 if (dsdb_check_single_valued_link(schema_attr, el) != LDB_SUCCESS) {
2208 ldb_asprintf_errstring(ldb,
2209 "Attribute %s is single valued but more than one value has been supplied",
2211 return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
2213 el->flags |= LDB_FLAG_INTERNAL_DISABLE_SINGLE_VALUE_CHECK;
2218 if (ret != LDB_SUCCESS) {
2222 ldb_msg_remove_attr(old_msg, el->name);
2224 ldb_msg_add_empty(old_msg, el->name, 0, &new_el);
2225 new_el->num_values = el->num_values;
2226 new_el->values = talloc_steal(msg->elements, el->values);
2228 /* TODO: this relises a bit too heavily on the exact
2229 behaviour of ldb_msg_find_element and
2230 ldb_msg_remove_element */
2231 old_el = ldb_msg_find_element(msg, el->name);
2233 ldb_msg_remove_element(msg, old_el);
2244 static int replmd_modify(struct ldb_module *module, struct ldb_request *req)
2246 struct ldb_context *ldb;
2247 struct replmd_replicated_request *ac;
2248 struct ldb_request *down_req;
2249 struct ldb_message *msg;
2250 time_t t = time(NULL);
2252 bool is_urgent = false;
2253 struct loadparm_context *lp_ctx;
2255 unsigned int functional_level;
2256 const DATA_BLOB *guid_blob;
2258 /* do not manipulate our control entries */
2259 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2260 return ldb_next_request(module, req);
2263 ldb = ldb_module_get_ctx(module);
2265 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_modify\n");
2267 guid_blob = ldb_msg_find_ldb_val(req->op.mod.message, "objectGUID");
2268 if ( guid_blob != NULL ) {
2269 ldb_set_errstring(ldb,
2270 "replmd_modify: it's not allowed to change the objectGUID!");
2271 return LDB_ERR_CONSTRAINT_VIOLATION;
2274 ac = replmd_ctx_init(module, req);
2276 return ldb_module_oom(module);
2279 functional_level = dsdb_functional_level(ldb);
2281 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
2282 struct loadparm_context);
2284 /* we have to copy the message as the caller might have it as a const */
2285 msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
2289 return LDB_ERR_OPERATIONS_ERROR;
2292 ldb_msg_remove_attr(msg, "whenChanged");
2293 ldb_msg_remove_attr(msg, "uSNChanged");
2295 ret = replmd_update_rpmd(module, ac->schema, req, NULL,
2296 msg, &ac->seq_num, t, &is_urgent);
2297 if (ret == LDB_ERR_REFERRAL) {
2298 referral = talloc_asprintf(req,
2300 lpcfg_dnsdomain(lp_ctx),
2301 ldb_dn_get_linearized(msg->dn));
2302 ret = ldb_module_send_referral(req, referral);
2304 return ldb_module_done(req, NULL, NULL, ret);
2307 if (ret != LDB_SUCCESS) {
2312 ret = replmd_modify_handle_linked_attribs(module, msg, ac->seq_num, t, req);
2313 if (ret != LDB_SUCCESS) {
2319 * - replace the old object with the newly constructed one
2322 ac->is_urgent = is_urgent;
2324 ret = ldb_build_mod_req(&down_req, ldb, ac,
2327 ac, replmd_op_callback,
2329 LDB_REQ_SET_LOCATION(down_req);
2330 if (ret != LDB_SUCCESS) {
2335 /* current partition control is needed by "replmd_op_callback" */
2336 if (ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID) == NULL) {
2337 ret = ldb_request_add_control(down_req,
2338 DSDB_CONTROL_CURRENT_PARTITION_OID,
2340 if (ret != LDB_SUCCESS) {
2346 /* If we are in functional level 2000, then
2347 * replmd_modify_handle_linked_attribs will have done
2349 if (functional_level == DS_DOMAIN_FUNCTION_2000) {
2350 ret = ldb_request_add_control(down_req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
2351 if (ret != LDB_SUCCESS) {
2357 talloc_steal(down_req, msg);
2359 /* we only change whenChanged and uSNChanged if the seq_num
2361 if (ac->seq_num != 0) {
2362 ret = add_time_element(msg, "whenChanged", t);
2363 if (ret != LDB_SUCCESS) {
2368 ret = add_uint64_element(ldb, msg, "uSNChanged", ac->seq_num);
2369 if (ret != LDB_SUCCESS) {
2375 /* go on with the call chain */
2376 return ldb_next_request(module, down_req);
2379 static int replmd_rename_callback(struct ldb_request *req, struct ldb_reply *ares);
2382 handle a rename request
2384 On a rename we need to do an extra ldb_modify which sets the
2385 whenChanged and uSNChanged attributes. We do this in a callback after the success.
2387 static int replmd_rename(struct ldb_module *module, struct ldb_request *req)
2389 struct ldb_context *ldb;
2390 struct replmd_replicated_request *ac;
2392 struct ldb_request *down_req;
2394 /* do not manipulate our control entries */
2395 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2396 return ldb_next_request(module, req);
2399 ldb = ldb_module_get_ctx(module);
2401 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_rename\n");
2403 ac = replmd_ctx_init(module, req);
2405 return ldb_module_oom(module);
2408 ret = ldb_build_rename_req(&down_req, ldb, ac,
2409 ac->req->op.rename.olddn,
2410 ac->req->op.rename.newdn,
2412 ac, replmd_rename_callback,
2414 LDB_REQ_SET_LOCATION(down_req);
2415 if (ret != LDB_SUCCESS) {
2420 /* go on with the call chain */
2421 return ldb_next_request(module, down_req);
2424 /* After the rename is compleated, update the whenchanged etc */
2425 static int replmd_rename_callback(struct ldb_request *req, struct ldb_reply *ares)
2427 struct ldb_context *ldb;
2428 struct replmd_replicated_request *ac;
2429 struct ldb_request *down_req;
2430 struct ldb_message *msg;
2431 const struct dsdb_attribute *rdn_attr;
2432 const char *rdn_name;
2433 const struct ldb_val *rdn_val;
2434 const char *attrs[5] = { NULL, };
2435 time_t t = time(NULL);
2437 bool is_urgent = false;
2439 ac = talloc_get_type(req->context, struct replmd_replicated_request);
2440 ldb = ldb_module_get_ctx(ac->module);
2442 if (ares->error != LDB_SUCCESS) {
2443 return ldb_module_done(ac->req, ares->controls,
2444 ares->response, ares->error);
2447 if (ares->type != LDB_REPLY_DONE) {
2448 ldb_set_errstring(ldb,
2449 "invalid ldb_reply_type in callback");
2451 return ldb_module_done(ac->req, NULL, NULL,
2452 LDB_ERR_OPERATIONS_ERROR);
2456 * - replace the old object with the newly constructed one
2459 msg = ldb_msg_new(ac);
2462 return LDB_ERR_OPERATIONS_ERROR;
2465 msg->dn = ac->req->op.rename.newdn;
2467 rdn_name = ldb_dn_get_rdn_name(msg->dn);
2468 if (rdn_name == NULL) {
2470 return ldb_module_done(ac->req, NULL, NULL,
2474 /* normalize the rdn attribute name */
2475 rdn_attr = dsdb_attribute_by_lDAPDisplayName(ac->schema, rdn_name);
2476 if (rdn_attr == NULL) {
2478 return ldb_module_done(ac->req, NULL, NULL,
2481 rdn_name = rdn_attr->lDAPDisplayName;
2483 rdn_val = ldb_dn_get_rdn_val(msg->dn);
2484 if (rdn_val == NULL) {
2486 return ldb_module_done(ac->req, NULL, NULL,
2490 if (ldb_msg_add_empty(msg, rdn_name, LDB_FLAG_MOD_REPLACE, NULL) != 0) {
2492 return ldb_module_done(ac->req, NULL, NULL,
2495 if (ldb_msg_add_value(msg, rdn_name, rdn_val, NULL) != 0) {
2497 return ldb_module_done(ac->req, NULL, NULL,
2500 if (ldb_msg_add_empty(msg, "name", LDB_FLAG_MOD_REPLACE, NULL) != 0) {
2502 return ldb_module_done(ac->req, NULL, NULL,
2505 if (ldb_msg_add_value(msg, "name", rdn_val, NULL) != 0) {
2507 return ldb_module_done(ac->req, NULL, NULL,
2512 * here we let replmd_update_rpmd() only search for
2513 * the existing "replPropertyMetaData" and rdn_name attributes.
2515 * We do not want the existing "name" attribute as
2516 * the "name" attribute needs to get the version
2517 * updated on rename even if the rdn value hasn't changed.
2519 * This is the diff of the meta data, for a moved user
2520 * on a w2k8r2 server:
2523 * -dn: CN=sdf df,CN=Users,DC=bla,DC=base
2524 * +dn: CN=sdf df,OU=TestOU,DC=bla,DC=base
2525 * replPropertyMetaData: NDR: struct replPropertyMetaDataBlob
2526 * version : 0x00000001 (1)
2527 * reserved : 0x00000000 (0)
2528 * @@ -66,11 +66,11 @@ replPropertyMetaData: NDR: struct re
2529 * local_usn : 0x00000000000037a5 (14245)
2530 * array: struct replPropertyMetaData1
2531 * attid : DRSUAPI_ATTID_name (0x90001)
2532 * - version : 0x00000001 (1)
2533 * - originating_change_time : Wed Feb 9 17:20:49 2011 CET
2534 * + version : 0x00000002 (2)
2535 * + originating_change_time : Wed Apr 6 15:21:01 2011 CEST
2536 * originating_invocation_id: 0d36ca05-5507-4e62-aca3-354bab0d39e1
2537 * - originating_usn : 0x00000000000037a5 (14245)
2538 * - local_usn : 0x00000000000037a5 (14245)
2539 * + originating_usn : 0x0000000000003834 (14388)
2540 * + local_usn : 0x0000000000003834 (14388)
2541 * array: struct replPropertyMetaData1
2542 * attid : DRSUAPI_ATTID_userAccountControl (0x90008)
2543 * version : 0x00000004 (4)
2545 attrs[0] = "replPropertyMetaData";
2546 attrs[1] = "objectClass";
2547 attrs[2] = "instanceType";
2548 attrs[3] = rdn_name;
2551 ret = replmd_update_rpmd(ac->module, ac->schema, req, attrs,
2552 msg, &ac->seq_num, t, &is_urgent);
2553 if (ret == LDB_ERR_REFERRAL) {
2554 struct ldb_dn *olddn = ac->req->op.rename.olddn;
2555 struct loadparm_context *lp_ctx;
2558 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
2559 struct loadparm_context);
2561 referral = talloc_asprintf(req,
2563 lpcfg_dnsdomain(lp_ctx),
2564 ldb_dn_get_linearized(olddn));
2565 ret = ldb_module_send_referral(req, referral);
2567 return ldb_module_done(req, NULL, NULL, ret);
2570 if (ret != LDB_SUCCESS) {
2572 return ldb_module_done(ac->req, NULL, NULL,
2574 "failed to call replmd_update_rpmd()"));
2577 if (ac->seq_num == 0) {
2579 return ldb_module_done(ac->req, NULL, NULL,
2581 "internal error seq_num == 0"));
2583 ac->is_urgent = is_urgent;
2585 ret = ldb_build_mod_req(&down_req, ldb, ac,
2588 ac, replmd_op_callback,
2590 LDB_REQ_SET_LOCATION(down_req);
2591 if (ret != LDB_SUCCESS) {
2596 /* current partition control is needed by "replmd_op_callback" */
2597 if (ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID) == NULL) {
2598 ret = ldb_request_add_control(down_req,
2599 DSDB_CONTROL_CURRENT_PARTITION_OID,
2601 if (ret != LDB_SUCCESS) {
2607 talloc_steal(down_req, msg);
2609 ret = add_time_element(msg, "whenChanged", t);
2610 if (ret != LDB_SUCCESS) {
2615 ret = add_uint64_element(ldb, msg, "uSNChanged", ac->seq_num);
2616 if (ret != LDB_SUCCESS) {
2621 /* go on with the call chain - do the modify after the rename */
2622 return ldb_next_request(ac->module, down_req);
2626 remove links from objects that point at this object when an object
2629 static int replmd_delete_remove_link(struct ldb_module *module,
2630 const struct dsdb_schema *schema,
2632 struct ldb_message_element *el,
2633 const struct dsdb_attribute *sa,
2634 struct ldb_request *parent)
2637 TALLOC_CTX *tmp_ctx = talloc_new(module);
2638 struct ldb_context *ldb = ldb_module_get_ctx(module);
2640 for (i=0; i<el->num_values; i++) {
2641 struct dsdb_dn *dsdb_dn;
2645 struct ldb_message *msg;
2646 const struct dsdb_attribute *target_attr;
2647 struct ldb_message_element *el2;
2648 struct ldb_val dn_val;
2650 if (dsdb_dn_is_deleted_val(&el->values[i])) {
2654 dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &el->values[i], sa->syntax->ldap_oid);
2656 talloc_free(tmp_ctx);
2657 return LDB_ERR_OPERATIONS_ERROR;
2660 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid2, "GUID");
2661 if (!NT_STATUS_IS_OK(status)) {
2662 talloc_free(tmp_ctx);
2663 return LDB_ERR_OPERATIONS_ERROR;
2666 /* remove the link */
2667 msg = ldb_msg_new(tmp_ctx);
2669 ldb_module_oom(module);
2670 talloc_free(tmp_ctx);
2671 return LDB_ERR_OPERATIONS_ERROR;
2675 msg->dn = dsdb_dn->dn;
2677 target_attr = dsdb_attribute_by_linkID(schema, sa->linkID ^ 1);
2678 if (target_attr == NULL) {
2682 ret = ldb_msg_add_empty(msg, target_attr->lDAPDisplayName, LDB_FLAG_MOD_DELETE, &el2);
2683 if (ret != LDB_SUCCESS) {
2684 ldb_module_oom(module);
2685 talloc_free(tmp_ctx);
2686 return LDB_ERR_OPERATIONS_ERROR;
2688 dn_val = data_blob_string_const(ldb_dn_get_linearized(dn));
2689 el2->values = &dn_val;
2690 el2->num_values = 1;
2692 ret = dsdb_module_modify(module, msg, DSDB_FLAG_OWN_MODULE, parent);
2693 if (ret != LDB_SUCCESS) {
2694 talloc_free(tmp_ctx);
2698 talloc_free(tmp_ctx);
2704 handle update of replication meta data for deletion of objects
2706 This also handles the mapping of delete to a rename operation
2707 to allow deletes to be replicated.
2709 static int replmd_delete(struct ldb_module *module, struct ldb_request *req)
2711 int ret = LDB_ERR_OTHER;
2712 bool retb, disallow_move_on_delete;
2713 struct ldb_dn *old_dn, *new_dn;
2714 const char *rdn_name;
2715 const struct ldb_val *rdn_value, *new_rdn_value;
2717 struct ldb_context *ldb = ldb_module_get_ctx(module);
2718 const struct dsdb_schema *schema;
2719 struct ldb_message *msg, *old_msg;
2720 struct ldb_message_element *el;
2721 TALLOC_CTX *tmp_ctx;
2722 struct ldb_result *res, *parent_res;
2723 const char *preserved_attrs[] = {
2724 /* yes, this really is a hard coded list. See MS-ADTS
2725 section 3.1.1.5.5.1.1 */
2726 "nTSecurityDescriptor", "attributeID", "attributeSyntax", "dNReferenceUpdate", "dNSHostName",
2727 "flatName", "governsID", "groupType", "instanceType", "lDAPDisplayName", "legacyExchangeDN",
2728 "isDeleted", "isRecycled", "lastKnownParent", "msDS-LastKnownRDN", "mS-DS-CreatorSID",
2729 "mSMQOwnerID", "nCName", "objectClass", "distinguishedName", "objectGUID", "objectSid",
2730 "oMSyntax", "proxiedObjectName", "name", "replPropertyMetaData", "sAMAccountName",
2731 "securityIdentifier", "sIDHistory", "subClassOf", "systemFlags", "trustPartner", "trustDirection",
2732 "trustType", "trustAttributes", "userAccountControl", "uSNChanged", "uSNCreated", "whenCreated",
2733 "whenChanged", NULL};
2734 unsigned int i, el_count = 0;
2735 enum deletion_state { OBJECT_NOT_DELETED=1, OBJECT_DELETED=2, OBJECT_RECYCLED=3,
2736 OBJECT_TOMBSTONE=4, OBJECT_REMOVED=5 };
2737 enum deletion_state deletion_state, next_deletion_state;
2739 int functional_level;
2741 if (ldb_dn_is_special(req->op.del.dn)) {
2742 return ldb_next_request(module, req);
2745 tmp_ctx = talloc_new(ldb);
2748 return LDB_ERR_OPERATIONS_ERROR;
2751 schema = dsdb_get_schema(ldb, tmp_ctx);
2753 return LDB_ERR_OPERATIONS_ERROR;
2756 functional_level = dsdb_functional_level(ldb);
2758 old_dn = ldb_dn_copy(tmp_ctx, req->op.del.dn);
2760 /* we need the complete msg off disk, so we can work out which
2761 attributes need to be removed */
2762 ret = dsdb_module_search_dn(module, tmp_ctx, &res, old_dn, NULL,
2763 DSDB_FLAG_NEXT_MODULE |
2764 DSDB_SEARCH_SHOW_RECYCLED |
2765 DSDB_SEARCH_REVEAL_INTERNALS |
2766 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT, req);
2767 if (ret != LDB_SUCCESS) {
2768 talloc_free(tmp_ctx);
2771 old_msg = res->msgs[0];
2774 ret = dsdb_recyclebin_enabled(module, &enabled);
2775 if (ret != LDB_SUCCESS) {
2776 talloc_free(tmp_ctx);
2780 if (ldb_msg_check_string_attribute(old_msg, "isDeleted", "TRUE")) {
2782 deletion_state = OBJECT_TOMBSTONE;
2783 next_deletion_state = OBJECT_REMOVED;
2784 } else if (ldb_msg_check_string_attribute(old_msg, "isRecycled", "TRUE")) {
2785 deletion_state = OBJECT_RECYCLED;
2786 next_deletion_state = OBJECT_REMOVED;
2788 deletion_state = OBJECT_DELETED;
2789 next_deletion_state = OBJECT_RECYCLED;
2792 deletion_state = OBJECT_NOT_DELETED;
2794 next_deletion_state = OBJECT_DELETED;
2796 next_deletion_state = OBJECT_TOMBSTONE;
2800 if (next_deletion_state == OBJECT_REMOVED) {
2801 struct auth_session_info *session_info =
2802 (struct auth_session_info *)ldb_get_opaque(ldb, "sessionInfo");
2803 if (security_session_user_level(session_info, NULL) != SECURITY_SYSTEM) {
2804 ldb_asprintf_errstring(ldb, "Refusing to delete deleted object %s",
2805 ldb_dn_get_linearized(old_msg->dn));
2806 return LDB_ERR_UNWILLING_TO_PERFORM;
2809 /* it is already deleted - really remove it this time */
2810 talloc_free(tmp_ctx);
2811 return ldb_next_request(module, req);
2814 rdn_name = ldb_dn_get_rdn_name(old_dn);
2815 rdn_value = ldb_dn_get_rdn_val(old_dn);
2816 if ((rdn_name == NULL) || (rdn_value == NULL)) {
2817 talloc_free(tmp_ctx);
2818 return ldb_operr(ldb);
2821 msg = ldb_msg_new(tmp_ctx);
2823 ldb_module_oom(module);
2824 talloc_free(tmp_ctx);
2825 return LDB_ERR_OPERATIONS_ERROR;
2830 if (deletion_state == OBJECT_NOT_DELETED){
2831 /* consider the SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE flag */
2832 disallow_move_on_delete =
2833 (ldb_msg_find_attr_as_int(old_msg, "systemFlags", 0)
2834 & SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE);
2836 /* work out where we will be renaming this object to */
2837 if (!disallow_move_on_delete) {
2838 ret = dsdb_get_deleted_objects_dn(ldb, tmp_ctx, old_dn,
2840 if (ret != LDB_SUCCESS) {
2841 /* this is probably an attempted delete on a partition
2842 * that doesn't allow delete operations, such as the
2843 * schema partition */
2844 ldb_asprintf_errstring(ldb, "No Deleted Objects container for DN %s",
2845 ldb_dn_get_linearized(old_dn));
2846 talloc_free(tmp_ctx);
2847 return LDB_ERR_UNWILLING_TO_PERFORM;
2850 new_dn = ldb_dn_get_parent(tmp_ctx, old_dn);
2851 if (new_dn == NULL) {
2852 ldb_module_oom(module);
2853 talloc_free(tmp_ctx);
2854 return LDB_ERR_OPERATIONS_ERROR;
2858 /* get the objects GUID from the search we just did */
2859 guid = samdb_result_guid(old_msg, "objectGUID");
2861 /* Add a formatted child */
2862 retb = ldb_dn_add_child_fmt(new_dn, "%s=%s\\0ADEL:%s",
2864 ldb_dn_escape_value(tmp_ctx, *rdn_value),
2865 GUID_string(tmp_ctx, &guid));
2867 DEBUG(0,(__location__ ": Unable to add a formatted child to dn: %s",
2868 ldb_dn_get_linearized(new_dn)));
2869 talloc_free(tmp_ctx);
2870 return LDB_ERR_OPERATIONS_ERROR;
2873 ret = ldb_msg_add_string(msg, "isDeleted", "TRUE");
2874 if (ret != LDB_SUCCESS) {
2875 DEBUG(0,(__location__ ": Failed to add isDeleted string to the msg\n"));
2876 ldb_module_oom(module);
2877 talloc_free(tmp_ctx);
2880 msg->elements[el_count++].flags = LDB_FLAG_MOD_REPLACE;
2884 now we need to modify the object in the following ways:
2886 - add isDeleted=TRUE
2887 - update rDN and name, with new rDN
2888 - remove linked attributes
2889 - remove objectCategory and sAMAccountType
2890 - remove attribs not on the preserved list
2891 - preserved if in above list, or is rDN
2892 - remove all linked attribs from this object
2893 - remove all links from other objects to this object
2894 - add lastKnownParent
2895 - update replPropertyMetaData?
2897 see MS-ADTS "Tombstone Requirements" section 3.1.1.5.5.1.1
2900 /* we need the storage form of the parent GUID */
2901 ret = dsdb_module_search_dn(module, tmp_ctx, &parent_res,
2902 ldb_dn_get_parent(tmp_ctx, old_dn), NULL,
2903 DSDB_FLAG_NEXT_MODULE |
2904 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
2905 DSDB_SEARCH_REVEAL_INTERNALS|
2906 DSDB_SEARCH_SHOW_RECYCLED, req);
2907 if (ret != LDB_SUCCESS) {
2908 talloc_free(tmp_ctx);
2912 if (deletion_state == OBJECT_NOT_DELETED){
2913 ret = ldb_msg_add_steal_string(msg, "lastKnownParent",
2914 ldb_dn_get_extended_linearized(tmp_ctx, parent_res->msgs[0]->dn, 1));
2915 if (ret != LDB_SUCCESS) {
2916 DEBUG(0,(__location__ ": Failed to add lastKnownParent string to the msg\n"));
2917 ldb_module_oom(module);
2918 talloc_free(tmp_ctx);
2921 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
2924 switch (next_deletion_state){
2926 case OBJECT_DELETED:
2928 ret = ldb_msg_add_value(msg, "msDS-LastKnownRDN", rdn_value, NULL);
2929 if (ret != LDB_SUCCESS) {
2930 DEBUG(0,(__location__ ": Failed to add msDS-LastKnownRDN string to the msg\n"));
2931 ldb_module_oom(module);
2932 talloc_free(tmp_ctx);
2935 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
2937 ret = ldb_msg_add_empty(msg, "objectCategory", LDB_FLAG_MOD_REPLACE, NULL);
2938 if (ret != LDB_SUCCESS) {
2939 talloc_free(tmp_ctx);
2940 ldb_module_oom(module);
2944 ret = ldb_msg_add_empty(msg, "sAMAccountType", LDB_FLAG_MOD_REPLACE, NULL);
2945 if (ret != LDB_SUCCESS) {
2946 talloc_free(tmp_ctx);
2947 ldb_module_oom(module);
2953 case OBJECT_RECYCLED:
2954 case OBJECT_TOMBSTONE:
2956 /* we also mark it as recycled, meaning this object can't be
2957 recovered (we are stripping its attributes) */
2958 if (functional_level >= DS_DOMAIN_FUNCTION_2008_R2) {
2959 ret = ldb_msg_add_string(msg, "isRecycled", "TRUE");
2960 if (ret != LDB_SUCCESS) {
2961 DEBUG(0,(__location__ ": Failed to add isRecycled string to the msg\n"));
2962 ldb_module_oom(module);
2963 talloc_free(tmp_ctx);
2966 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
2969 /* work out which of the old attributes we will be removing */
2970 for (i=0; i<old_msg->num_elements; i++) {
2971 const struct dsdb_attribute *sa;
2972 el = &old_msg->elements[i];
2973 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
2975 talloc_free(tmp_ctx);
2976 return LDB_ERR_OPERATIONS_ERROR;
2978 if (ldb_attr_cmp(el->name, rdn_name) == 0) {
2979 /* don't remove the rDN */
2982 if (sa->linkID && (sa->linkID & 1)) {
2984 we have a backlink in this object
2985 that needs to be removed. We're not
2986 allowed to remove it directly
2987 however, so we instead setup a
2988 modify to delete the corresponding
2991 ret = replmd_delete_remove_link(module, schema, old_dn, el, sa, req);
2992 if (ret != LDB_SUCCESS) {
2993 talloc_free(tmp_ctx);
2994 return LDB_ERR_OPERATIONS_ERROR;
2996 /* now we continue, which means we
2997 won't remove this backlink
3002 if (!sa->linkID && ldb_attr_in_list(preserved_attrs, el->name)) {
3005 ret = ldb_msg_add_empty(msg, el->name, LDB_FLAG_MOD_DELETE, &el);
3006 if (ret != LDB_SUCCESS) {
3007 talloc_free(tmp_ctx);
3008 ldb_module_oom(module);
3018 if (deletion_state == OBJECT_NOT_DELETED) {
3019 const struct dsdb_attribute *sa;
3021 /* work out what the new rdn value is, for updating the
3022 rDN and name fields */
3023 new_rdn_value = ldb_dn_get_rdn_val(new_dn);
3024 if (new_rdn_value == NULL) {
3025 talloc_free(tmp_ctx);
3026 return ldb_operr(ldb);
3029 sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
3031 talloc_free(tmp_ctx);
3032 return LDB_ERR_OPERATIONS_ERROR;
3035 ret = ldb_msg_add_value(msg, sa->lDAPDisplayName, new_rdn_value,
3037 if (ret != LDB_SUCCESS) {
3038 talloc_free(tmp_ctx);
3041 el->flags = LDB_FLAG_MOD_REPLACE;
3043 el = ldb_msg_find_element(old_msg, "name");
3045 ret = ldb_msg_add_value(msg, "name", new_rdn_value, &el);
3046 if (ret != LDB_SUCCESS) {
3047 talloc_free(tmp_ctx);
3050 el->flags = LDB_FLAG_MOD_REPLACE;
3054 ret = dsdb_module_modify(module, msg, DSDB_FLAG_OWN_MODULE, req);
3055 if (ret != LDB_SUCCESS) {
3056 ldb_asprintf_errstring(ldb, "replmd_delete: Failed to modify object %s in delete - %s",
3057 ldb_dn_get_linearized(old_dn), ldb_errstring(ldb));
3058 talloc_free(tmp_ctx);
3062 if (deletion_state == OBJECT_NOT_DELETED) {
3063 /* now rename onto the new DN */
3064 ret = dsdb_module_rename(module, old_dn, new_dn, DSDB_FLAG_NEXT_MODULE, req);
3065 if (ret != LDB_SUCCESS){
3066 DEBUG(0,(__location__ ": Failed to rename object from '%s' to '%s' - %s\n",
3067 ldb_dn_get_linearized(old_dn),
3068 ldb_dn_get_linearized(new_dn),
3069 ldb_errstring(ldb)));
3070 talloc_free(tmp_ctx);
3075 talloc_free(tmp_ctx);
3077 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
3082 static int replmd_replicated_request_error(struct replmd_replicated_request *ar, int ret)
3087 static int replmd_replicated_request_werror(struct replmd_replicated_request *ar, WERROR status)
3089 int ret = LDB_ERR_OTHER;
3090 /* TODO: do some error mapping */
3095 static struct replPropertyMetaData1 *
3096 replmd_replPropertyMetaData1_find_attid(struct replPropertyMetaDataBlob *md_blob,
3097 enum drsuapi_DsAttributeId attid)
3100 struct replPropertyMetaDataCtr1 *rpmd_ctr = &md_blob->ctr.ctr1;
3102 for (i = 0; i < rpmd_ctr->count; i++) {
3103 if (rpmd_ctr->array[i].attid == attid) {
3104 return &rpmd_ctr->array[i];
3112 return true if an update is newer than an existing entry
3113 see section 5.11 of MS-ADTS
3115 static bool replmd_update_is_newer(const struct GUID *current_invocation_id,
3116 const struct GUID *update_invocation_id,
3117 uint32_t current_version,
3118 uint32_t update_version,
3119 NTTIME current_change_time,
3120 NTTIME update_change_time)
3122 if (update_version != current_version) {
3123 return update_version > current_version;
3125 if (update_change_time != current_change_time) {
3126 return update_change_time > current_change_time;
3128 return GUID_compare(update_invocation_id, current_invocation_id) > 0;
3131 static bool replmd_replPropertyMetaData1_is_newer(struct replPropertyMetaData1 *cur_m,
3132 struct replPropertyMetaData1 *new_m)
3134 return replmd_update_is_newer(&cur_m->originating_invocation_id,
3135 &new_m->originating_invocation_id,
3138 cur_m->originating_change_time,
3139 new_m->originating_change_time);
3146 static struct ldb_dn *replmd_conflict_dn(TALLOC_CTX *mem_ctx, struct ldb_dn *dn, struct GUID *guid)
3148 const struct ldb_val *rdn_val;
3149 const char *rdn_name;
3150 struct ldb_dn *new_dn;
3152 rdn_val = ldb_dn_get_rdn_val(dn);
3153 rdn_name = ldb_dn_get_rdn_name(dn);
3154 if (!rdn_val || !rdn_name) {
3158 new_dn = ldb_dn_copy(mem_ctx, dn);
3163 if (!ldb_dn_remove_child_components(new_dn, 1)) {
3167 if (!ldb_dn_add_child_fmt(new_dn, "%s=%s\\0ACNF:%s",
3169 ldb_dn_escape_value(new_dn, *rdn_val),
3170 GUID_string(new_dn, guid))) {
3179 perform a modify operation which sets the rDN and name attributes to
3180 their current values. This has the effect of changing these
3181 attributes to have been last updated by the current DC. This is
3182 needed to ensure that renames performed as part of conflict
3183 resolution are propogated to other DCs
3185 static int replmd_name_modify(struct replmd_replicated_request *ar,
3186 struct ldb_request *req, struct ldb_dn *dn)
3188 struct ldb_message *msg;
3189 const char *rdn_name;
3190 const struct ldb_val *rdn_val;
3191 const struct dsdb_attribute *rdn_attr;
3194 msg = ldb_msg_new(req);
3200 rdn_name = ldb_dn_get_rdn_name(dn);
3201 if (rdn_name == NULL) {
3205 /* normalize the rdn attribute name */
3206 rdn_attr = dsdb_attribute_by_lDAPDisplayName(ar->schema, rdn_name);
3207 if (rdn_attr == NULL) {
3210 rdn_name = rdn_attr->lDAPDisplayName;
3212 rdn_val = ldb_dn_get_rdn_val(dn);
3213 if (rdn_val == NULL) {
3217 if (ldb_msg_add_empty(msg, rdn_name, LDB_FLAG_MOD_REPLACE, NULL) != 0) {
3220 if (ldb_msg_add_value(msg, rdn_name, rdn_val, NULL) != 0) {
3223 if (ldb_msg_add_empty(msg, "name", LDB_FLAG_MOD_REPLACE, NULL) != 0) {
3226 if (ldb_msg_add_value(msg, "name", rdn_val, NULL) != 0) {
3230 ret = dsdb_module_modify(ar->module, msg, DSDB_FLAG_OWN_MODULE, req);
3231 if (ret != LDB_SUCCESS) {
3232 DEBUG(0,(__location__ ": Failed to modify rDN/name of conflict DN '%s' - %s",
3233 ldb_dn_get_linearized(dn),
3234 ldb_errstring(ldb_module_get_ctx(ar->module))));
3244 DEBUG(0,(__location__ ": Failed to setup modify rDN/name of conflict DN '%s'",
3245 ldb_dn_get_linearized(dn)));
3246 return LDB_ERR_OPERATIONS_ERROR;
3251 callback for conflict DN handling where we have renamed the incoming
3252 record. After renaming it, we need to ensure the change of name and
3253 rDN for the incoming record is seen as an originating update by this DC.
3255 static int replmd_op_name_modify_callback(struct ldb_request *req, struct ldb_reply *ares)
3257 struct replmd_replicated_request *ar =
3258 talloc_get_type_abort(req->context, struct replmd_replicated_request);
3261 if (ares->error != LDB_SUCCESS) {
3262 /* call the normal callback for everything except success */
3263 return replmd_op_callback(req, ares);
3266 /* perform a modify of the rDN and name of the record */
3267 ret = replmd_name_modify(ar, req, req->op.add.message->dn);
3268 if (ret != LDB_SUCCESS) {
3270 return replmd_op_callback(req, ares);
3273 return replmd_op_callback(req, ares);
3277 callback for replmd_replicated_apply_add()
3278 This copes with the creation of conflict records in the case where
3279 the DN exists, but with a different objectGUID
3281 static int replmd_op_add_callback(struct ldb_request *req, struct ldb_reply *ares)
3283 struct ldb_dn *conflict_dn;
3284 struct replmd_replicated_request *ar =
3285 talloc_get_type_abort(req->context, struct replmd_replicated_request);
3286 struct ldb_result *res;
3287 const char *attrs[] = { "replPropertyMetaData", "objectGUID", NULL };
3289 const struct ldb_val *rmd_value, *omd_value;
3290 struct replPropertyMetaDataBlob omd, rmd;
3291 enum ndr_err_code ndr_err;
3292 bool rename_incoming_record, rodc;
3293 struct replPropertyMetaData1 *rmd_name, *omd_name;
3295 if (ares->error != LDB_ERR_ENTRY_ALREADY_EXISTS) {
3296 /* call the normal callback for everything except
3298 return replmd_op_callback(req, ares);
3301 ret = samdb_rodc(ldb_module_get_ctx(ar->module), &rodc);
3302 if (ret != LDB_SUCCESS) {
3306 * we have a conflict, and need to decide if we will keep the
3307 * new record or the old record
3309 conflict_dn = req->op.add.message->dn;
3313 * We are on an RODC, or were a GC for this
3314 * partition, so we have to fail this until
3315 * someone who owns the partition sorts it
3318 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module),
3319 "Conflict adding object '%s' from incoming replication as we are read only for the partition. \n"
3320 " - We must fail the operation until a master for this partition resolves the conflict",
3321 ldb_dn_get_linearized(conflict_dn));
3326 * we have a conflict, and need to decide if we will keep the
3327 * new record or the old record
3329 conflict_dn = req->op.add.message->dn;
3332 * first we need the replPropertyMetaData attribute from the
3335 ret = dsdb_module_search_dn(ar->module, req, &res, conflict_dn,
3337 DSDB_FLAG_NEXT_MODULE |
3338 DSDB_SEARCH_SHOW_DELETED |
3339 DSDB_SEARCH_SHOW_RECYCLED, req);
3340 if (ret != LDB_SUCCESS) {
3341 DEBUG(0,(__location__ ": Unable to find object for conflicting record '%s'\n",
3342 ldb_dn_get_linearized(conflict_dn)));
3346 omd_value = ldb_msg_find_ldb_val(res->msgs[0], "replPropertyMetaData");
3347 if (omd_value == NULL) {
3348 DEBUG(0,(__location__ ": Unable to find replPropertyMetaData for conflicting record '%s'\n",
3349 ldb_dn_get_linearized(conflict_dn)));
3353 ndr_err = ndr_pull_struct_blob(omd_value, res->msgs[0], &omd,
3354 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
3355 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3356 DEBUG(0,(__location__ ": Failed to parse old replPropertyMetaData for %s\n",
3357 ldb_dn_get_linearized(conflict_dn)));
3362 * and the replPropertyMetaData attribute from the
3365 rmd_value = ldb_msg_find_ldb_val(req->op.add.message, "replPropertyMetaData");
3366 if (rmd_value == NULL) {
3367 DEBUG(0,(__location__ ": Unable to find replPropertyMetaData for new record '%s'\n",
3368 ldb_dn_get_linearized(conflict_dn)));
3372 ndr_err = ndr_pull_struct_blob(rmd_value, req, &rmd,
3373 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
3374 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3375 DEBUG(0,(__location__ ": Failed to parse new replPropertyMetaData for %s\n",
3376 ldb_dn_get_linearized(conflict_dn)));
3380 /* we decide which is newer based on the RPMD on the name
3381 attribute. See [MS-DRSR] ResolveNameConflict */
3382 rmd_name = replmd_replPropertyMetaData1_find_attid(&rmd, DRSUAPI_ATTID_name);
3383 omd_name = replmd_replPropertyMetaData1_find_attid(&omd, DRSUAPI_ATTID_name);
3384 if (!rmd_name || !omd_name) {
3385 DEBUG(0,(__location__ ": Failed to find name attribute in replPropertyMetaData for %s\n",
3386 ldb_dn_get_linearized(conflict_dn)));
3390 rename_incoming_record = !replmd_replPropertyMetaData1_is_newer(omd_name, rmd_name);
3392 if (rename_incoming_record) {
3394 struct ldb_dn *new_dn;
3395 struct ldb_message *new_msg;
3397 guid = samdb_result_guid(req->op.add.message, "objectGUID");
3398 if (GUID_all_zero(&guid)) {
3399 DEBUG(0,(__location__ ": Failed to find objectGUID for conflicting incoming record %s\n",
3400 ldb_dn_get_linearized(conflict_dn)));
3403 new_dn = replmd_conflict_dn(req, conflict_dn, &guid);
3404 if (new_dn == NULL) {
3405 DEBUG(0,(__location__ ": Failed to form conflict DN for %s\n",
3406 ldb_dn_get_linearized(conflict_dn)));
3410 DEBUG(1,(__location__ ": Resolving conflict record via incoming rename '%s' -> '%s'\n",
3411 ldb_dn_get_linearized(conflict_dn), ldb_dn_get_linearized(new_dn)));
3413 /* re-submit the request, but with a different
3414 callback, so we don't loop forever. */
3415 new_msg = ldb_msg_copy_shallow(req, req->op.add.message);
3418 DEBUG(0,(__location__ ": Failed to copy conflict DN message for %s\n",
3419 ldb_dn_get_linearized(conflict_dn)));
3421 new_msg->dn = new_dn;
3422 req->op.add.message = new_msg;
3423 req->callback = replmd_op_name_modify_callback;
3425 return ldb_next_request(ar->module, req);
3427 /* we are renaming the existing record */
3429 struct ldb_dn *new_dn;
3431 guid = samdb_result_guid(res->msgs[0], "objectGUID");
3432 if (GUID_all_zero(&guid)) {
3433 DEBUG(0,(__location__ ": Failed to find objectGUID for existing conflict record %s\n",
3434 ldb_dn_get_linearized(conflict_dn)));
3438 new_dn = replmd_conflict_dn(req, conflict_dn, &guid);
3439 if (new_dn == NULL) {
3440 DEBUG(0,(__location__ ": Failed to form conflict DN for %s\n",
3441 ldb_dn_get_linearized(conflict_dn)));
3445 DEBUG(1,(__location__ ": Resolving conflict record via existing rename '%s' -> '%s'\n",
3446 ldb_dn_get_linearized(conflict_dn), ldb_dn_get_linearized(new_dn)));
3448 ret = dsdb_module_rename(ar->module, conflict_dn, new_dn,
3449 DSDB_FLAG_OWN_MODULE, req);
3450 if (ret != LDB_SUCCESS) {
3451 DEBUG(0,(__location__ ": Failed to rename conflict dn '%s' to '%s' - %s\n",
3452 ldb_dn_get_linearized(conflict_dn),
3453 ldb_dn_get_linearized(new_dn),
3454 ldb_errstring(ldb_module_get_ctx(ar->module))));
3459 * now we need to ensure that the rename is seen as an
3460 * originating update. We do that with a modify.
3462 ret = replmd_name_modify(ar, req, new_dn);
3463 if (ret != LDB_SUCCESS) {
3467 req->callback = replmd_op_callback;
3469 return ldb_next_request(ar->module, req);
3473 /* on failure do the original callback. This means replication
3474 * will stop with an error, but there is not much else we can
3477 return replmd_op_callback(req, ares);
3481 this is called when a new object comes in over DRS
3483 static int replmd_replicated_apply_add(struct replmd_replicated_request *ar)
3485 struct ldb_context *ldb;
3486 struct ldb_request *change_req;
3487 enum ndr_err_code ndr_err;
3488 struct ldb_message *msg;
3489 struct replPropertyMetaDataBlob *md;
3490 struct ldb_val md_value;
3495 * TODO: check if the parent object exist
3499 * TODO: handle the conflict case where an object with the
3503 ldb = ldb_module_get_ctx(ar->module);
3504 msg = ar->objs->objects[ar->index_current].msg;
3505 md = ar->objs->objects[ar->index_current].meta_data;
3507 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ar->seq_num);
3508 if (ret != LDB_SUCCESS) {
3509 return replmd_replicated_request_error(ar, ret);
3512 ret = ldb_msg_add_value(msg, "objectGUID", &ar->objs->objects[ar->index_current].guid_value, NULL);
3513 if (ret != LDB_SUCCESS) {
3514 return replmd_replicated_request_error(ar, ret);
3517 ret = ldb_msg_add_string(msg, "whenChanged", ar->objs->objects[ar->index_current].when_changed);
3518 if (ret != LDB_SUCCESS) {
3519 return replmd_replicated_request_error(ar, ret);
3522 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNCreated", ar->seq_num);
3523 if (ret != LDB_SUCCESS) {
3524 return replmd_replicated_request_error(ar, ret);
3527 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ar->seq_num);
3528 if (ret != LDB_SUCCESS) {
3529 return replmd_replicated_request_error(ar, ret);
3532 /* remove any message elements that have zero values */
3533 for (i=0; i<msg->num_elements; i++) {
3534 struct ldb_message_element *el = &msg->elements[i];
3536 if (el->num_values == 0) {
3537 DEBUG(4,(__location__ ": Removing attribute %s with num_values==0\n",
3539 memmove(el, el+1, sizeof(*el)*(msg->num_elements - (i+1)));
3540 msg->num_elements--;
3547 * the meta data array is already sorted by the caller
3549 for (i=0; i < md->ctr.ctr1.count; i++) {
3550 md->ctr.ctr1.array[i].local_usn = ar->seq_num;
3552 ndr_err = ndr_push_struct_blob(&md_value, msg, md,
3553 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
3554 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3555 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3556 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3558 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &md_value, NULL);
3559 if (ret != LDB_SUCCESS) {
3560 return replmd_replicated_request_error(ar, ret);
3563 replmd_ldb_message_sort(msg, ar->schema);
3566 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_ADD, msg);
3567 DEBUG(4, ("DRS replication add message:\n%s\n", s));
3571 ret = ldb_build_add_req(&change_req,
3577 replmd_op_add_callback,
3579 LDB_REQ_SET_LOCATION(change_req);
3580 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3582 /* current partition control needed by "repmd_op_callback" */
3583 ret = ldb_request_add_control(change_req,
3584 DSDB_CONTROL_CURRENT_PARTITION_OID,
3586 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3588 if (ar->objs->dsdb_repl_flags & DSDB_REPL_FLAG_PARTIAL_REPLICA) {
3589 /* this tells the partition module to make it a
3590 partial replica if creating an NC */
3591 ret = ldb_request_add_control(change_req,
3592 DSDB_CONTROL_PARTIAL_REPLICA,
3594 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3597 return ldb_next_request(ar->module, change_req);
3601 handle renames that come in over DRS replication
3603 static int replmd_replicated_handle_rename(struct replmd_replicated_request *ar,
3604 struct ldb_message *msg,
3605 struct replPropertyMetaDataBlob *rmd,
3606 struct replPropertyMetaDataBlob *omd,
3607 struct ldb_request *parent)
3609 struct replPropertyMetaData1 *md_remote;
3610 struct replPropertyMetaData1 *md_local;
3612 if (ldb_dn_compare(msg->dn, ar->search_msg->dn) == 0) {
3617 /* now we need to check for double renames. We could have a
3618 * local rename pending which our replication partner hasn't
3619 * received yet. We choose which one wins by looking at the
3620 * attribute stamps on the two objects, the newer one wins
3622 md_remote = replmd_replPropertyMetaData1_find_attid(rmd, DRSUAPI_ATTID_name);
3623 md_local = replmd_replPropertyMetaData1_find_attid(omd, DRSUAPI_ATTID_name);
3624 /* if there is no name attribute then we have to assume the
3625 object we've received is in fact newer */
3626 if (!md_remote || !md_local ||
3627 replmd_replPropertyMetaData1_is_newer(md_local, md_remote)) {
3628 DEBUG(4,("replmd_replicated_request rename %s => %s\n",
3629 ldb_dn_get_linearized(ar->search_msg->dn),
3630 ldb_dn_get_linearized(msg->dn)));
3631 /* pass rename to the next module
3632 * so it doesn't appear as an originating update */
3633 return dsdb_module_rename(ar->module,
3634 ar->search_msg->dn, msg->dn,
3635 DSDB_FLAG_NEXT_MODULE | DSDB_MODIFY_RELAX, parent);
3638 /* we're going to keep our old object */
3639 DEBUG(4,(__location__ ": Keeping object %s and rejecting older rename to %s\n",
3640 ldb_dn_get_linearized(ar->search_msg->dn),
3641 ldb_dn_get_linearized(msg->dn)));
3646 static int replmd_replicated_apply_merge(struct replmd_replicated_request *ar)
3648 struct ldb_context *ldb;
3649 struct ldb_request *change_req;
3650 enum ndr_err_code ndr_err;
3651 struct ldb_message *msg;
3652 struct replPropertyMetaDataBlob *rmd;
3653 struct replPropertyMetaDataBlob omd;
3654 const struct ldb_val *omd_value;
3655 struct replPropertyMetaDataBlob nmd;
3656 struct ldb_val nmd_value;
3659 unsigned int removed_attrs = 0;
3662 ldb = ldb_module_get_ctx(ar->module);
3663 msg = ar->objs->objects[ar->index_current].msg;
3664 rmd = ar->objs->objects[ar->index_current].meta_data;
3668 /* find existing meta data */
3669 omd_value = ldb_msg_find_ldb_val(ar->search_msg, "replPropertyMetaData");
3671 ndr_err = ndr_pull_struct_blob(omd_value, ar, &omd,
3672 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
3673 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3674 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3675 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3678 if (omd.version != 1) {
3679 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
3683 /* handle renames that come in over DRS */
3684 ret = replmd_replicated_handle_rename(ar, msg, rmd, &omd, ar->req);
3685 if (ret != LDB_SUCCESS) {
3686 ldb_debug(ldb, LDB_DEBUG_FATAL,
3687 "replmd_replicated_request rename %s => %s failed - %s\n",
3688 ldb_dn_get_linearized(ar->search_msg->dn),
3689 ldb_dn_get_linearized(msg->dn),
3690 ldb_errstring(ldb));
3691 return replmd_replicated_request_werror(ar, WERR_DS_DRA_DB_ERROR);
3696 nmd.ctr.ctr1.count = omd.ctr.ctr1.count + rmd->ctr.ctr1.count;
3697 nmd.ctr.ctr1.array = talloc_array(ar,
3698 struct replPropertyMetaData1,
3699 nmd.ctr.ctr1.count);
3700 if (!nmd.ctr.ctr1.array) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3702 /* first copy the old meta data */
3703 for (i=0; i < omd.ctr.ctr1.count; i++) {
3704 nmd.ctr.ctr1.array[ni] = omd.ctr.ctr1.array[i];
3709 /* now merge in the new meta data */
3710 for (i=0; i < rmd->ctr.ctr1.count; i++) {
3713 for (j=0; j < ni; j++) {
3716 if (rmd->ctr.ctr1.array[i].attid != nmd.ctr.ctr1.array[j].attid) {
3720 if (ar->objs->dsdb_repl_flags & DSDB_REPL_FLAG_PRIORITISE_INCOMING) {
3721 /* if we compare equal then do an
3722 update. This is used when a client
3723 asks for a FULL_SYNC, and can be
3724 used to recover a corrupt
3726 cmp = !replmd_replPropertyMetaData1_is_newer(&rmd->ctr.ctr1.array[i],
3727 &nmd.ctr.ctr1.array[j]);
3729 cmp = replmd_replPropertyMetaData1_is_newer(&nmd.ctr.ctr1.array[j],
3730 &rmd->ctr.ctr1.array[i]);
3733 /* replace the entry */
3734 nmd.ctr.ctr1.array[j] = rmd->ctr.ctr1.array[i];
3735 if (ar->seq_num == 0) {
3736 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ar->seq_num);
3737 if (ret != LDB_SUCCESS) {
3738 return replmd_replicated_request_error(ar, ret);
3741 nmd.ctr.ctr1.array[j].local_usn = ar->seq_num;
3746 if (rmd->ctr.ctr1.array[i].attid != DRSUAPI_ATTID_instanceType) {
3747 DEBUG(3,("Discarding older DRS attribute update to %s on %s from %s\n",
3748 msg->elements[i-removed_attrs].name,
3749 ldb_dn_get_linearized(msg->dn),
3750 GUID_string(ar, &rmd->ctr.ctr1.array[i].originating_invocation_id)));
3753 /* we don't want to apply this change so remove the attribute */
3754 ldb_msg_remove_element(msg, &msg->elements[i-removed_attrs]);
3761 if (found) continue;
3763 nmd.ctr.ctr1.array[ni] = rmd->ctr.ctr1.array[i];
3764 if (ar->seq_num == 0) {
3765 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ar->seq_num);
3766 if (ret != LDB_SUCCESS) {
3767 return replmd_replicated_request_error(ar, ret);
3770 nmd.ctr.ctr1.array[ni].local_usn = ar->seq_num;
3775 * finally correct the size of the meta_data array
3777 nmd.ctr.ctr1.count = ni;
3780 * the rdn attribute (the alias for the name attribute),
3781 * 'cn' for most objects is the last entry in the meta data array
3784 * sort the new meta data array
3786 ret = replmd_replPropertyMetaDataCtr1_sort(&nmd.ctr.ctr1, ar->schema, msg->dn);
3787 if (ret != LDB_SUCCESS) {
3792 * check if some replicated attributes left, otherwise skip the ldb_modify() call
3794 if (msg->num_elements == 0) {
3795 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_replicated_apply_merge[%u]: skip replace\n",
3798 ar->index_current++;
3799 return replmd_replicated_apply_next(ar);
3802 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_replicated_apply_merge[%u]: replace %u attributes\n",
3803 ar->index_current, msg->num_elements);
3805 /* create the meta data value */
3806 ndr_err = ndr_push_struct_blob(&nmd_value, msg, &nmd,
3807 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
3808 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3809 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3810 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3814 * when we know that we'll modify the record, add the whenChanged, uSNChanged
3815 * and replPopertyMetaData attributes
3817 ret = ldb_msg_add_string(msg, "whenChanged", ar->objs->objects[ar->index_current].when_changed);
3818 if (ret != LDB_SUCCESS) {
3819 return replmd_replicated_request_error(ar, ret);
3821 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ar->seq_num);
3822 if (ret != LDB_SUCCESS) {
3823 return replmd_replicated_request_error(ar, ret);
3825 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &nmd_value, NULL);
3826 if (ret != LDB_SUCCESS) {
3827 return replmd_replicated_request_error(ar, ret);
3830 replmd_ldb_message_sort(msg, ar->schema);
3832 /* we want to replace the old values */
3833 for (i=0; i < msg->num_elements; i++) {
3834 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
3838 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_MODIFY, msg);
3839 DEBUG(4, ("DRS replication modify message:\n%s\n", s));
3843 ret = ldb_build_mod_req(&change_req,
3851 LDB_REQ_SET_LOCATION(change_req);
3852 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3854 /* current partition control needed by "repmd_op_callback" */
3855 ret = ldb_request_add_control(change_req,
3856 DSDB_CONTROL_CURRENT_PARTITION_OID,
3858 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3860 return ldb_next_request(ar->module, change_req);
3863 static int replmd_replicated_apply_search_callback(struct ldb_request *req,
3864 struct ldb_reply *ares)
3866 struct replmd_replicated_request *ar = talloc_get_type(req->context,
3867 struct replmd_replicated_request);
3871 return ldb_module_done(ar->req, NULL, NULL,
3872 LDB_ERR_OPERATIONS_ERROR);
3874 if (ares->error != LDB_SUCCESS &&
3875 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
3876 return ldb_module_done(ar->req, ares->controls,
3877 ares->response, ares->error);
3880 switch (ares->type) {
3881 case LDB_REPLY_ENTRY:
3882 ar->search_msg = talloc_steal(ar, ares->message);
3885 case LDB_REPLY_REFERRAL:
3886 /* we ignore referrals */
3889 case LDB_REPLY_DONE:
3890 if (ar->search_msg != NULL) {
3891 ret = replmd_replicated_apply_merge(ar);
3893 ret = replmd_replicated_apply_add(ar);
3895 if (ret != LDB_SUCCESS) {
3896 return ldb_module_done(ar->req, NULL, NULL, ret);
3904 static int replmd_replicated_uptodate_vector(struct replmd_replicated_request *ar);
3906 static int replmd_replicated_apply_next(struct replmd_replicated_request *ar)
3908 struct ldb_context *ldb;
3912 struct ldb_request *search_req;
3913 struct ldb_search_options_control *options;
3915 if (ar->index_current >= ar->objs->num_objects) {
3916 /* done with it, go to next stage */
3917 return replmd_replicated_uptodate_vector(ar);
3920 ldb = ldb_module_get_ctx(ar->module);
3921 ar->search_msg = NULL;
3923 tmp_str = ldb_binary_encode(ar, ar->objs->objects[ar->index_current].guid_value);
3924 if (!tmp_str) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3926 filter = talloc_asprintf(ar, "(objectGUID=%s)", tmp_str);
3927 if (!filter) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3928 talloc_free(tmp_str);
3930 ret = ldb_build_search_req(&search_req,
3939 replmd_replicated_apply_search_callback,
3941 LDB_REQ_SET_LOCATION(search_req);
3943 ret = ldb_request_add_control(search_req, LDB_CONTROL_SHOW_RECYCLED_OID,
3945 if (ret != LDB_SUCCESS) {
3949 /* we need to cope with cross-partition links, so search for
3950 the GUID over all partitions */
3951 options = talloc(search_req, struct ldb_search_options_control);
3952 if (options == NULL) {
3953 DEBUG(0, (__location__ ": out of memory\n"));
3954 return LDB_ERR_OPERATIONS_ERROR;
3956 options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
3958 ret = ldb_request_add_control(search_req,
3959 LDB_CONTROL_SEARCH_OPTIONS_OID,
3961 if (ret != LDB_SUCCESS) {
3965 return ldb_next_request(ar->module, search_req);
3968 static int replmd_replicated_uptodate_modify_callback(struct ldb_request *req,
3969 struct ldb_reply *ares)
3971 struct ldb_context *ldb;
3972 struct replmd_replicated_request *ar = talloc_get_type(req->context,
3973 struct replmd_replicated_request);
3974 ldb = ldb_module_get_ctx(ar->module);
3977 return ldb_module_done(ar->req, NULL, NULL,
3978 LDB_ERR_OPERATIONS_ERROR);
3980 if (ares->error != LDB_SUCCESS) {
3981 return ldb_module_done(ar->req, ares->controls,
3982 ares->response, ares->error);
3985 if (ares->type != LDB_REPLY_DONE) {
3986 ldb_asprintf_errstring(ldb, "Invalid LDB reply type %d", ares->type);
3987 return ldb_module_done(ar->req, NULL, NULL,
3988 LDB_ERR_OPERATIONS_ERROR);
3993 return ldb_module_done(ar->req, NULL, NULL, LDB_SUCCESS);
3996 static int replmd_replicated_uptodate_modify(struct replmd_replicated_request *ar)
3998 struct ldb_context *ldb;
3999 struct ldb_request *change_req;
4000 enum ndr_err_code ndr_err;
4001 struct ldb_message *msg;
4002 struct replUpToDateVectorBlob ouv;
4003 const struct ldb_val *ouv_value;
4004 const struct drsuapi_DsReplicaCursor2CtrEx *ruv;
4005 struct replUpToDateVectorBlob nuv;
4006 struct ldb_val nuv_value;
4007 struct ldb_message_element *nuv_el = NULL;
4008 const struct GUID *our_invocation_id;
4009 struct ldb_message_element *orf_el = NULL;
4010 struct repsFromToBlob nrf;
4011 struct ldb_val *nrf_value = NULL;
4012 struct ldb_message_element *nrf_el = NULL;
4016 time_t t = time(NULL);
4019 uint32_t instanceType;
4021 ldb = ldb_module_get_ctx(ar->module);
4022 ruv = ar->objs->uptodateness_vector;
4028 unix_to_nt_time(&now, t);
4030 if (ar->search_msg == NULL) {
4031 /* this happens for a REPL_OBJ call where we are
4032 creating the target object by replicating it. The
4033 subdomain join code does this for the partition DN
4035 DEBUG(4,(__location__ ": Skipping UDV and repsFrom update as no target DN\n"));
4036 return ldb_module_done(ar->req, NULL, NULL, LDB_SUCCESS);
4039 instanceType = ldb_msg_find_attr_as_uint(ar->search_msg, "instanceType", 0);
4040 if (! (instanceType & INSTANCE_TYPE_IS_NC_HEAD)) {
4041 DEBUG(4,(__location__ ": Skipping UDV and repsFrom update as not NC root: %s\n",
4042 ldb_dn_get_linearized(ar->search_msg->dn)));
4043 return ldb_module_done(ar->req, NULL, NULL, LDB_SUCCESS);
4047 * first create the new replUpToDateVector
4049 ouv_value = ldb_msg_find_ldb_val(ar->search_msg, "replUpToDateVector");
4051 ndr_err = ndr_pull_struct_blob(ouv_value, ar, &ouv,
4052 (ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob);
4053 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4054 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4055 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4058 if (ouv.version != 2) {
4059 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
4064 * the new uptodateness vector will at least
4065 * contain 1 entry, one for the source_dsa
4067 * plus optional values from our old vector and the one from the source_dsa
4069 nuv.ctr.ctr2.count = 1 + ouv.ctr.ctr2.count;
4070 if (ruv) nuv.ctr.ctr2.count += ruv->count;
4071 nuv.ctr.ctr2.cursors = talloc_array(ar,
4072 struct drsuapi_DsReplicaCursor2,
4073 nuv.ctr.ctr2.count);
4074 if (!nuv.ctr.ctr2.cursors) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4076 /* first copy the old vector */
4077 for (i=0; i < ouv.ctr.ctr2.count; i++) {
4078 nuv.ctr.ctr2.cursors[ni] = ouv.ctr.ctr2.cursors[i];
4082 /* get our invocation_id if we have one already attached to the ldb */
4083 our_invocation_id = samdb_ntds_invocation_id(ldb);
4085 /* merge in the source_dsa vector is available */
4086 for (i=0; (ruv && i < ruv->count); i++) {
4089 if (our_invocation_id &&
4090 GUID_equal(&ruv->cursors[i].source_dsa_invocation_id,
4091 our_invocation_id)) {
4095 for (j=0; j < ni; j++) {
4096 if (!GUID_equal(&ruv->cursors[i].source_dsa_invocation_id,
4097 &nuv.ctr.ctr2.cursors[j].source_dsa_invocation_id)) {
4104 * we update only the highest_usn and not the latest_sync_success time,
4105 * because the last success stands for direct replication
4107 if (ruv->cursors[i].highest_usn > nuv.ctr.ctr2.cursors[j].highest_usn) {
4108 nuv.ctr.ctr2.cursors[j].highest_usn = ruv->cursors[i].highest_usn;
4113 if (found) continue;
4115 /* if it's not there yet, add it */
4116 nuv.ctr.ctr2.cursors[ni] = ruv->cursors[i];
4121 * merge in the current highwatermark for the source_dsa
4124 for (j=0; j < ni; j++) {
4125 if (!GUID_equal(&ar->objs->source_dsa->source_dsa_invocation_id,
4126 &nuv.ctr.ctr2.cursors[j].source_dsa_invocation_id)) {
4133 * here we update the highest_usn and last_sync_success time
4134 * because we're directly replicating from the source_dsa
4136 * and use the tmp_highest_usn because this is what we have just applied
4139 nuv.ctr.ctr2.cursors[j].highest_usn = ar->objs->source_dsa->highwatermark.tmp_highest_usn;
4140 nuv.ctr.ctr2.cursors[j].last_sync_success = now;
4145 * here we update the highest_usn and last_sync_success time
4146 * because we're directly replicating from the source_dsa
4148 * and use the tmp_highest_usn because this is what we have just applied
4151 nuv.ctr.ctr2.cursors[ni].source_dsa_invocation_id= ar->objs->source_dsa->source_dsa_invocation_id;
4152 nuv.ctr.ctr2.cursors[ni].highest_usn = ar->objs->source_dsa->highwatermark.tmp_highest_usn;
4153 nuv.ctr.ctr2.cursors[ni].last_sync_success = now;
4158 * finally correct the size of the cursors array
4160 nuv.ctr.ctr2.count = ni;
4165 TYPESAFE_QSORT(nuv.ctr.ctr2.cursors, nuv.ctr.ctr2.count, drsuapi_DsReplicaCursor2_compare);
4168 * create the change ldb_message
4170 msg = ldb_msg_new(ar);
4171 if (!msg) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4172 msg->dn = ar->search_msg->dn;
4174 ndr_err = ndr_push_struct_blob(&nuv_value, msg, &nuv,
4175 (ndr_push_flags_fn_t)ndr_push_replUpToDateVectorBlob);
4176 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4177 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4178 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4180 ret = ldb_msg_add_value(msg, "replUpToDateVector", &nuv_value, &nuv_el);
4181 if (ret != LDB_SUCCESS) {
4182 return replmd_replicated_request_error(ar, ret);
4184 nuv_el->flags = LDB_FLAG_MOD_REPLACE;
4187 * now create the new repsFrom value from the given repsFromTo1 structure
4191 nrf.ctr.ctr1 = *ar->objs->source_dsa;
4192 nrf.ctr.ctr1.highwatermark.highest_usn = nrf.ctr.ctr1.highwatermark.tmp_highest_usn;
4195 * first see if we already have a repsFrom value for the current source dsa
4196 * if so we'll later replace this value
4198 orf_el = ldb_msg_find_element(ar->search_msg, "repsFrom");
4200 for (i=0; i < orf_el->num_values; i++) {
4201 struct repsFromToBlob *trf;
4203 trf = talloc(ar, struct repsFromToBlob);
4204 if (!trf) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4206 ndr_err = ndr_pull_struct_blob(&orf_el->values[i], trf, trf,
4207 (ndr_pull_flags_fn_t)ndr_pull_repsFromToBlob);
4208 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4209 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4210 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4213 if (trf->version != 1) {
4214 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
4218 * we compare the source dsa objectGUID not the invocation_id
4219 * because we want only one repsFrom value per source dsa
4220 * and when the invocation_id of the source dsa has changed we don't need
4221 * the old repsFrom with the old invocation_id
4223 if (!GUID_equal(&trf->ctr.ctr1.source_dsa_obj_guid,
4224 &ar->objs->source_dsa->source_dsa_obj_guid)) {
4230 nrf_value = &orf_el->values[i];
4235 * copy over all old values to the new ldb_message
4237 ret = ldb_msg_add_empty(msg, "repsFrom", 0, &nrf_el);
4238 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4243 * if we haven't found an old repsFrom value for the current source dsa
4244 * we'll add a new value
4247 struct ldb_val zero_value;
4248 ZERO_STRUCT(zero_value);
4249 ret = ldb_msg_add_value(msg, "repsFrom", &zero_value, &nrf_el);
4250 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4252 nrf_value = &nrf_el->values[nrf_el->num_values - 1];
4255 /* we now fill the value which is already attached to ldb_message */
4256 ndr_err = ndr_push_struct_blob(nrf_value, msg,
4258 (ndr_push_flags_fn_t)ndr_push_repsFromToBlob);
4259 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4260 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4261 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4265 * the ldb_message_element for the attribute, has all the old values and the new one
4266 * so we'll replace the whole attribute with all values
4268 nrf_el->flags = LDB_FLAG_MOD_REPLACE;
4270 if (CHECK_DEBUGLVL(4)) {
4271 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_MODIFY, msg);
4272 DEBUG(4, ("DRS replication uptodate modify message:\n%s\n", s));
4276 /* prepare the ldb_modify() request */
4277 ret = ldb_build_mod_req(&change_req,
4283 replmd_replicated_uptodate_modify_callback,
4285 LDB_REQ_SET_LOCATION(change_req);
4286 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4288 return ldb_next_request(ar->module, change_req);
4291 static int replmd_replicated_uptodate_search_callback(struct ldb_request *req,
4292 struct ldb_reply *ares)
4294 struct replmd_replicated_request *ar = talloc_get_type(req->context,
4295 struct replmd_replicated_request);
4299 return ldb_module_done(ar->req, NULL, NULL,
4300 LDB_ERR_OPERATIONS_ERROR);
4302 if (ares->error != LDB_SUCCESS &&
4303 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
4304 return ldb_module_done(ar->req, ares->controls,
4305 ares->response, ares->error);
4308 switch (ares->type) {
4309 case LDB_REPLY_ENTRY:
4310 ar->search_msg = talloc_steal(ar, ares->message);
4313 case LDB_REPLY_REFERRAL:
4314 /* we ignore referrals */
4317 case LDB_REPLY_DONE:
4318 ret = replmd_replicated_uptodate_modify(ar);
4319 if (ret != LDB_SUCCESS) {
4320 return ldb_module_done(ar->req, NULL, NULL, ret);
4329 static int replmd_replicated_uptodate_vector(struct replmd_replicated_request *ar)
4331 struct ldb_context *ldb;
4333 static const char *attrs[] = {
4334 "replUpToDateVector",
4339 struct ldb_request *search_req;
4341 ldb = ldb_module_get_ctx(ar->module);
4342 ar->search_msg = NULL;
4344 ret = ldb_build_search_req(&search_req,
4347 ar->objs->partition_dn,
4353 replmd_replicated_uptodate_search_callback,
4355 LDB_REQ_SET_LOCATION(search_req);
4356 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4358 return ldb_next_request(ar->module, search_req);
4363 static int replmd_extended_replicated_objects(struct ldb_module *module, struct ldb_request *req)
4365 struct ldb_context *ldb;
4366 struct dsdb_extended_replicated_objects *objs;
4367 struct replmd_replicated_request *ar;
4368 struct ldb_control **ctrls;
4371 struct replmd_private *replmd_private =
4372 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
4373 struct dsdb_control_replicated_update *rep_update;
4375 ldb = ldb_module_get_ctx(module);
4377 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_extended_replicated_objects\n");
4379 objs = talloc_get_type(req->op.extended.data, struct dsdb_extended_replicated_objects);
4381 ldb_debug(ldb, LDB_DEBUG_FATAL, "replmd_extended_replicated_objects: invalid extended data\n");
4382 return LDB_ERR_PROTOCOL_ERROR;
4385 if (objs->version != DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION) {
4386 ldb_debug(ldb, LDB_DEBUG_FATAL, "replmd_extended_replicated_objects: extended data invalid version [%u != %u]\n",
4387 objs->version, DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION);
4388 return LDB_ERR_PROTOCOL_ERROR;
4391 ar = replmd_ctx_init(module, req);
4393 return LDB_ERR_OPERATIONS_ERROR;
4395 /* Set the flags to have the replmd_op_callback run over the full set of objects */
4396 ar->apply_mode = true;
4398 ar->schema = dsdb_get_schema(ldb, ar);
4400 ldb_debug_set(ldb, LDB_DEBUG_FATAL, "replmd_ctx_init: no loaded schema found\n");
4402 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
4403 return LDB_ERR_CONSTRAINT_VIOLATION;
4406 ctrls = req->controls;
4408 if (req->controls) {
4409 req->controls = talloc_memdup(ar, req->controls,
4410 talloc_get_size(req->controls));
4411 if (!req->controls) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4414 /* This allows layers further down to know if a change came in
4415 over replication and what the replication flags were */
4416 rep_update = talloc_zero(ar, struct dsdb_control_replicated_update);
4417 if (rep_update == NULL) {
4418 return ldb_module_oom(module);
4420 rep_update->dsdb_repl_flags = objs->dsdb_repl_flags;
4422 ret = ldb_request_add_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID, false, rep_update);
4423 if (ret != LDB_SUCCESS) {
4427 /* If this change contained linked attributes in the body
4428 * (rather than in the links section) we need to update
4429 * backlinks in linked_attributes */
4430 ret = ldb_request_add_control(req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
4431 if (ret != LDB_SUCCESS) {
4435 ar->controls = req->controls;
4436 req->controls = ctrls;
4438 DEBUG(4,("linked_attributes_count=%u\n", objs->linked_attributes_count));
4440 /* save away the linked attributes for the end of the
4442 for (i=0; i<ar->objs->linked_attributes_count; i++) {
4443 struct la_entry *la_entry;
4445 if (replmd_private->la_ctx == NULL) {
4446 replmd_private->la_ctx = talloc_new(replmd_private);
4448 la_entry = talloc(replmd_private->la_ctx, struct la_entry);
4449 if (la_entry == NULL) {
4451 return LDB_ERR_OPERATIONS_ERROR;
4453 la_entry->la = talloc(la_entry, struct drsuapi_DsReplicaLinkedAttribute);
4454 if (la_entry->la == NULL) {
4455 talloc_free(la_entry);
4457 return LDB_ERR_OPERATIONS_ERROR;
4459 *la_entry->la = ar->objs->linked_attributes[i];
4461 /* we need to steal the non-scalars so they stay
4462 around until the end of the transaction */
4463 talloc_steal(la_entry->la, la_entry->la->identifier);
4464 talloc_steal(la_entry->la, la_entry->la->value.blob);
4466 DLIST_ADD(replmd_private->la_list, la_entry);
4469 return replmd_replicated_apply_next(ar);
4473 process one linked attribute structure
4475 static int replmd_process_linked_attribute(struct ldb_module *module,
4476 struct la_entry *la_entry,
4477 struct ldb_request *parent)
4479 struct drsuapi_DsReplicaLinkedAttribute *la = la_entry->la;
4480 struct ldb_context *ldb = ldb_module_get_ctx(module);
4481 struct ldb_message *msg;
4482 TALLOC_CTX *tmp_ctx = talloc_new(la_entry);
4483 const struct dsdb_schema *schema = dsdb_get_schema(ldb, tmp_ctx);
4485 const struct dsdb_attribute *attr;
4486 struct dsdb_dn *dsdb_dn;
4487 uint64_t seq_num = 0;
4488 struct ldb_message_element *old_el;
4490 time_t t = time(NULL);
4491 struct ldb_result *res;
4492 const char *attrs[2];
4493 struct parsed_dn *pdn_list, *pdn;
4494 struct GUID guid = GUID_zero();
4496 bool active = (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)?true:false;
4497 const struct GUID *our_invocation_id;
4500 linked_attributes[0]:
4501 &objs->linked_attributes[i]: struct drsuapi_DsReplicaLinkedAttribute
4503 identifier: struct drsuapi_DsReplicaObjectIdentifier
4504 __ndr_size : 0x0000003a (58)
4505 __ndr_size_sid : 0x00000000 (0)
4506 guid : 8e95b6a9-13dd-4158-89db-3220a5be5cc7
4508 __ndr_size_dn : 0x00000000 (0)
4510 attid : DRSUAPI_ATTID_member (0x1F)
4511 value: struct drsuapi_DsAttributeValue
4512 __ndr_size : 0x0000007e (126)
4514 blob : DATA_BLOB length=126
4515 flags : 0x00000001 (1)
4516 1: DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE
4517 originating_add_time : Wed Sep 2 22:20:01 2009 EST
4518 meta_data: struct drsuapi_DsReplicaMetaData
4519 version : 0x00000015 (21)
4520 originating_change_time : Wed Sep 2 23:39:07 2009 EST
4521 originating_invocation_id: 794640f3-18cf-40ee-a211-a93992b67a64
4522 originating_usn : 0x000000000001e19c (123292)
4524 (for cases where the link is to a normal DN)
4525 &target: struct drsuapi_DsReplicaObjectIdentifier3
4526 __ndr_size : 0x0000007e (126)
4527 __ndr_size_sid : 0x0000001c (28)
4528 guid : 7639e594-db75-4086-b0d4-67890ae46031
4529 sid : S-1-5-21-2848215498-2472035911-1947525656-19924
4530 __ndr_size_dn : 0x00000022 (34)
4531 dn : 'CN=UOne,OU=TestOU,DC=vsofs8,DC=com'
4534 /* find the attribute being modified */
4535 attr = dsdb_attribute_by_attributeID_id(schema, la->attid);
4537 DEBUG(0, (__location__ ": Unable to find attributeID 0x%x\n", la->attid));
4538 talloc_free(tmp_ctx);
4539 return LDB_ERR_OPERATIONS_ERROR;
4542 attrs[0] = attr->lDAPDisplayName;
4545 /* get the existing message from the db for the object with
4546 this GUID, returning attribute being modified. We will then
4547 use this msg as the basis for a modify call */
4548 ret = dsdb_module_search(module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE, attrs,
4549 DSDB_FLAG_NEXT_MODULE |
4550 DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
4551 DSDB_SEARCH_SHOW_RECYCLED |
4552 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
4553 DSDB_SEARCH_REVEAL_INTERNALS,
4555 "objectGUID=%s", GUID_string(tmp_ctx, &la->identifier->guid));
4556 if (ret != LDB_SUCCESS) {
4557 talloc_free(tmp_ctx);
4560 if (res->count != 1) {
4561 ldb_asprintf_errstring(ldb, "DRS linked attribute for GUID %s - DN not found",
4562 GUID_string(tmp_ctx, &la->identifier->guid));
4563 talloc_free(tmp_ctx);
4564 return LDB_ERR_NO_SUCH_OBJECT;
4568 if (msg->num_elements == 0) {
4569 ret = ldb_msg_add_empty(msg, attr->lDAPDisplayName, LDB_FLAG_MOD_REPLACE, &old_el);
4570 if (ret != LDB_SUCCESS) {
4571 ldb_module_oom(module);
4572 talloc_free(tmp_ctx);
4573 return LDB_ERR_OPERATIONS_ERROR;
4576 old_el = &msg->elements[0];
4577 old_el->flags = LDB_FLAG_MOD_REPLACE;
4580 /* parse the existing links */
4581 ret = get_parsed_dns(module, tmp_ctx, old_el, &pdn_list, attr->syntax->ldap_oid, parent);
4582 if (ret != LDB_SUCCESS) {
4583 talloc_free(tmp_ctx);
4587 /* get our invocationId */
4588 our_invocation_id = samdb_ntds_invocation_id(ldb);
4589 if (!our_invocation_id) {
4590 ldb_debug_set(ldb, LDB_DEBUG_ERROR, __location__ ": unable to find invocationId\n");
4591 talloc_free(tmp_ctx);
4592 return LDB_ERR_OPERATIONS_ERROR;
4595 ret = replmd_check_upgrade_links(pdn_list, old_el->num_values, old_el, our_invocation_id);
4596 if (ret != LDB_SUCCESS) {
4597 talloc_free(tmp_ctx);
4601 status = dsdb_dn_la_from_blob(ldb, attr, schema, tmp_ctx, la->value.blob, &dsdb_dn);
4602 if (!W_ERROR_IS_OK(status)) {
4603 ldb_asprintf_errstring(ldb, "Failed to parsed linked attribute blob for %s on %s - %s\n",
4604 old_el->name, ldb_dn_get_linearized(msg->dn), win_errstr(status));
4605 return LDB_ERR_OPERATIONS_ERROR;
4608 ntstatus = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid, "GUID");
4609 if (!NT_STATUS_IS_OK(ntstatus) && active) {
4610 ldb_asprintf_errstring(ldb, "Failed to find GUID in linked attribute blob for %s on %s from %s",
4612 ldb_dn_get_linearized(dsdb_dn->dn),
4613 ldb_dn_get_linearized(msg->dn));
4614 return LDB_ERR_OPERATIONS_ERROR;
4617 /* re-resolve the DN by GUID, as the DRS server may give us an
4619 ret = dsdb_module_dn_by_guid(module, dsdb_dn, &guid, &dsdb_dn->dn, parent);
4620 if (ret != LDB_SUCCESS) {
4621 DEBUG(2,(__location__ ": WARNING: Failed to re-resolve GUID %s - using %s\n",
4622 GUID_string(tmp_ctx, &guid),
4623 ldb_dn_get_linearized(dsdb_dn->dn)));
4626 /* see if this link already exists */
4627 pdn = parsed_dn_find(pdn_list, old_el->num_values, &guid, dsdb_dn->dn);
4629 /* see if this update is newer than what we have already */
4630 struct GUID invocation_id = GUID_zero();
4631 uint32_t version = 0;
4632 uint32_t originating_usn = 0;
4633 NTTIME change_time = 0;
4634 uint32_t rmd_flags = dsdb_dn_rmd_flags(pdn->dsdb_dn->dn);
4636 dsdb_get_extended_dn_guid(pdn->dsdb_dn->dn, &invocation_id, "RMD_INVOCID");
4637 dsdb_get_extended_dn_uint32(pdn->dsdb_dn->dn, &version, "RMD_VERSION");
4638 dsdb_get_extended_dn_uint32(pdn->dsdb_dn->dn, &originating_usn, "RMD_ORIGINATING_USN");
4639 dsdb_get_extended_dn_nttime(pdn->dsdb_dn->dn, &change_time, "RMD_CHANGETIME");
4641 if (!replmd_update_is_newer(&invocation_id,
4642 &la->meta_data.originating_invocation_id,
4644 la->meta_data.version,
4646 la->meta_data.originating_change_time)) {
4647 DEBUG(3,("Discarding older DRS linked attribute update to %s on %s from %s\n",
4648 old_el->name, ldb_dn_get_linearized(msg->dn),
4649 GUID_string(tmp_ctx, &la->meta_data.originating_invocation_id)));
4650 talloc_free(tmp_ctx);
4654 /* get a seq_num for this change */
4655 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
4656 if (ret != LDB_SUCCESS) {
4657 talloc_free(tmp_ctx);
4661 if (!(rmd_flags & DSDB_RMD_FLAG_DELETED)) {
4662 /* remove the existing backlink */
4663 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid, false, attr, false);
4664 if (ret != LDB_SUCCESS) {
4665 talloc_free(tmp_ctx);
4670 ret = replmd_update_la_val(tmp_ctx, pdn->v, dsdb_dn, pdn->dsdb_dn,
4671 &la->meta_data.originating_invocation_id,
4672 la->meta_data.originating_usn, seq_num,
4673 la->meta_data.originating_change_time,
4674 la->meta_data.version,
4676 if (ret != LDB_SUCCESS) {
4677 talloc_free(tmp_ctx);
4682 /* add the new backlink */
4683 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid, true, attr, false);
4684 if (ret != LDB_SUCCESS) {
4685 talloc_free(tmp_ctx);
4690 /* get a seq_num for this change */
4691 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
4692 if (ret != LDB_SUCCESS) {
4693 talloc_free(tmp_ctx);
4697 old_el->values = talloc_realloc(msg->elements, old_el->values,
4698 struct ldb_val, old_el->num_values+1);
4699 if (!old_el->values) {
4700 ldb_module_oom(module);
4701 return LDB_ERR_OPERATIONS_ERROR;
4703 old_el->num_values++;
4705 ret = replmd_build_la_val(tmp_ctx, &old_el->values[old_el->num_values-1], dsdb_dn,
4706 &la->meta_data.originating_invocation_id,
4707 la->meta_data.originating_usn, seq_num,
4708 la->meta_data.originating_change_time,
4709 la->meta_data.version,
4710 (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)?false:true);
4711 if (ret != LDB_SUCCESS) {
4712 talloc_free(tmp_ctx);
4717 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid,
4719 if (ret != LDB_SUCCESS) {
4720 talloc_free(tmp_ctx);
4726 /* we only change whenChanged and uSNChanged if the seq_num
4728 if (add_time_element(msg, "whenChanged", t) != LDB_SUCCESS) {
4729 talloc_free(tmp_ctx);
4730 return ldb_operr(ldb);
4733 if (add_uint64_element(ldb, msg, "uSNChanged",
4734 seq_num) != LDB_SUCCESS) {
4735 talloc_free(tmp_ctx);
4736 return ldb_operr(ldb);
4739 old_el = ldb_msg_find_element(msg, attr->lDAPDisplayName);
4740 if (old_el == NULL) {
4741 talloc_free(tmp_ctx);
4742 return ldb_operr(ldb);
4745 ret = dsdb_check_single_valued_link(attr, old_el);
4746 if (ret != LDB_SUCCESS) {
4747 talloc_free(tmp_ctx);
4751 old_el->flags |= LDB_FLAG_INTERNAL_DISABLE_SINGLE_VALUE_CHECK;
4753 ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE, parent);
4754 if (ret != LDB_SUCCESS) {
4755 ldb_debug(ldb, LDB_DEBUG_WARNING, "Failed to apply linked attribute change '%s'\n%s\n",
4757 ldb_ldif_message_string(ldb, tmp_ctx, LDB_CHANGETYPE_MODIFY, msg));
4758 talloc_free(tmp_ctx);
4762 talloc_free(tmp_ctx);
4767 static int replmd_extended(struct ldb_module *module, struct ldb_request *req)
4769 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_REPLICATED_OBJECTS_OID) == 0) {
4770 return replmd_extended_replicated_objects(module, req);
4773 return ldb_next_request(module, req);
4778 we hook into the transaction operations to allow us to
4779 perform the linked attribute updates at the end of the whole
4780 transaction. This allows a forward linked attribute to be created
4781 before the object is created. During a vampire, w2k8 sends us linked
4782 attributes before the objects they are part of.
4784 static int replmd_start_transaction(struct ldb_module *module)
4786 /* create our private structure for this transaction */
4787 struct replmd_private *replmd_private = talloc_get_type(ldb_module_get_private(module),
4788 struct replmd_private);
4789 replmd_txn_cleanup(replmd_private);
4791 /* free any leftover mod_usn records from cancelled
4793 while (replmd_private->ncs) {
4794 struct nc_entry *e = replmd_private->ncs;
4795 DLIST_REMOVE(replmd_private->ncs, e);
4799 return ldb_next_start_trans(module);
4803 on prepare commit we loop over our queued la_context structures and
4806 static int replmd_prepare_commit(struct ldb_module *module)
4808 struct replmd_private *replmd_private =
4809 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
4810 struct la_entry *la, *prev;
4811 struct la_backlink *bl;
4814 /* walk the list backwards, to do the first entry first, as we
4815 * added the entries with DLIST_ADD() which puts them at the
4816 * start of the list */
4817 for (la = DLIST_TAIL(replmd_private->la_list); la; la=prev) {
4818 prev = DLIST_PREV(la);
4819 DLIST_REMOVE(replmd_private->la_list, la);
4820 ret = replmd_process_linked_attribute(module, la, NULL);
4821 if (ret != LDB_SUCCESS) {
4822 replmd_txn_cleanup(replmd_private);
4827 /* process our backlink list, creating and deleting backlinks
4829 for (bl=replmd_private->la_backlinks; bl; bl=bl->next) {
4830 ret = replmd_process_backlink(module, bl, NULL);
4831 if (ret != LDB_SUCCESS) {
4832 replmd_txn_cleanup(replmd_private);
4837 replmd_txn_cleanup(replmd_private);
4839 /* possibly change @REPLCHANGED */
4840 ret = replmd_notify_store(module, NULL);
4841 if (ret != LDB_SUCCESS) {
4845 return ldb_next_prepare_commit(module);
4848 static int replmd_del_transaction(struct ldb_module *module)
4850 struct replmd_private *replmd_private =
4851 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
4852 replmd_txn_cleanup(replmd_private);
4854 return ldb_next_del_trans(module);
4858 static const struct ldb_module_ops ldb_repl_meta_data_module_ops = {
4859 .name = "repl_meta_data",
4860 .init_context = replmd_init,
4862 .modify = replmd_modify,
4863 .rename = replmd_rename,
4864 .del = replmd_delete,
4865 .extended = replmd_extended,
4866 .start_transaction = replmd_start_transaction,
4867 .prepare_commit = replmd_prepare_commit,
4868 .del_transaction = replmd_del_transaction,
4871 int ldb_repl_meta_data_module_init(const char *version)
4873 LDB_MODULE_CHECK_VERSION(version);
4874 return ldb_register_module(&ldb_repl_meta_data_module_ops);