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"
54 * It's 29/12/9999 at 23:59:59 UTC as specified in MS-ADTS 7.1.1.4.2
55 * Deleted Objects Container
57 static const NTTIME DELETED_OBJECT_CONTAINER_CHANGE_TIME = 2650466015990000000ULL;
59 struct replmd_private {
61 struct la_entry *la_list;
63 struct la_backlink *la_backlinks;
65 struct nc_entry *prev, *next;
68 uint64_t mod_usn_urgent;
73 struct la_entry *next, *prev;
74 struct drsuapi_DsReplicaLinkedAttribute *la;
77 struct replmd_replicated_request {
78 struct ldb_module *module;
79 struct ldb_request *req;
81 const struct dsdb_schema *schema;
83 /* the controls we pass down */
84 struct ldb_control **controls;
86 /* details for the mode where we apply a bunch of inbound replication meessages */
88 uint32_t index_current;
89 struct dsdb_extended_replicated_objects *objs;
91 struct ldb_message *search_msg;
97 enum urgent_situation {
98 REPL_URGENT_ON_CREATE = 1,
99 REPL_URGENT_ON_UPDATE = 2,
100 REPL_URGENT_ON_DELETE = 4
104 static const struct {
105 const char *update_name;
106 enum urgent_situation repl_situation;
107 } urgent_objects[] = {
108 {"nTDSDSA", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_DELETE)},
109 {"crossRef", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_DELETE)},
110 {"attributeSchema", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
111 {"classSchema", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
112 {"secret", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
113 {"rIDManager", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
117 /* Attributes looked for when updating or deleting, to check for a urgent replication needed */
118 static const char *urgent_attrs[] = {
121 "userAccountControl",
126 static bool replmd_check_urgent_objectclass(const struct ldb_message_element *objectclass_el,
127 enum urgent_situation situation)
130 for (i=0; urgent_objects[i].update_name; i++) {
132 if ((situation & urgent_objects[i].repl_situation) == 0) {
136 for (j=0; j<objectclass_el->num_values; j++) {
137 const struct ldb_val *v = &objectclass_el->values[j];
138 if (ldb_attr_cmp((const char *)v->data, urgent_objects[i].update_name) == 0) {
146 static bool replmd_check_urgent_attribute(const struct ldb_message_element *el)
148 if (ldb_attr_in_list(urgent_attrs, el->name)) {
155 static int replmd_replicated_apply_next(struct replmd_replicated_request *ar);
158 initialise the module
159 allocate the private structure and build the list
160 of partition DNs for use by replmd_notify()
162 static int replmd_init(struct ldb_module *module)
164 struct replmd_private *replmd_private;
165 struct ldb_context *ldb = ldb_module_get_ctx(module);
167 replmd_private = talloc_zero(module, struct replmd_private);
168 if (replmd_private == NULL) {
170 return LDB_ERR_OPERATIONS_ERROR;
172 ldb_module_set_private(module, replmd_private);
174 return ldb_next_init(module);
178 cleanup our per-transaction contexts
180 static void replmd_txn_cleanup(struct replmd_private *replmd_private)
182 talloc_free(replmd_private->la_ctx);
183 replmd_private->la_list = NULL;
184 replmd_private->la_ctx = NULL;
186 talloc_free(replmd_private->bl_ctx);
187 replmd_private->la_backlinks = NULL;
188 replmd_private->bl_ctx = NULL;
193 struct la_backlink *next, *prev;
194 const char *attr_name;
195 struct GUID forward_guid, target_guid;
200 process a backlinks we accumulated during a transaction, adding and
201 deleting the backlinks from the target objects
203 static int replmd_process_backlink(struct ldb_module *module, struct la_backlink *bl, struct ldb_request *parent)
205 struct ldb_dn *target_dn, *source_dn;
207 struct ldb_context *ldb = ldb_module_get_ctx(module);
208 struct ldb_message *msg;
209 TALLOC_CTX *tmp_ctx = talloc_new(bl);
215 - construct ldb_message
216 - either an add or a delete
218 ret = dsdb_module_dn_by_guid(module, tmp_ctx, &bl->target_guid, &target_dn, parent);
219 if (ret != LDB_SUCCESS) {
220 DEBUG(2,(__location__ ": WARNING: Failed to find target DN for linked attribute with GUID %s\n",
221 GUID_string(bl, &bl->target_guid)));
225 ret = dsdb_module_dn_by_guid(module, tmp_ctx, &bl->forward_guid, &source_dn, parent);
226 if (ret != LDB_SUCCESS) {
227 ldb_asprintf_errstring(ldb, "Failed to find source DN for linked attribute with GUID %s\n",
228 GUID_string(bl, &bl->forward_guid));
229 talloc_free(tmp_ctx);
233 msg = ldb_msg_new(tmp_ctx);
235 ldb_module_oom(module);
236 talloc_free(tmp_ctx);
237 return LDB_ERR_OPERATIONS_ERROR;
240 /* construct a ldb_message for adding/deleting the backlink */
242 dn_string = ldb_dn_get_extended_linearized(tmp_ctx, source_dn, 1);
244 ldb_module_oom(module);
245 talloc_free(tmp_ctx);
246 return LDB_ERR_OPERATIONS_ERROR;
248 ret = ldb_msg_add_steal_string(msg, bl->attr_name, dn_string);
249 if (ret != LDB_SUCCESS) {
250 talloc_free(tmp_ctx);
253 msg->elements[0].flags = bl->active?LDB_FLAG_MOD_ADD:LDB_FLAG_MOD_DELETE;
255 /* a backlink should never be single valued. Unfortunately the
256 exchange schema has a attribute
257 msExchBridgeheadedLocalConnectorsDNBL which is single
258 valued and a backlink. We need to cope with that by
259 ignoring the single value flag */
260 msg->elements[0].flags |= LDB_FLAG_INTERNAL_DISABLE_SINGLE_VALUE_CHECK;
262 ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE, parent);
263 if (ret == LDB_ERR_NO_SUCH_ATTRIBUTE && !bl->active) {
264 /* we allow LDB_ERR_NO_SUCH_ATTRIBUTE as success to
265 cope with possible corruption where the backlink has
266 already been removed */
267 DEBUG(3,("WARNING: backlink from %s already removed from %s - %s\n",
268 ldb_dn_get_linearized(target_dn),
269 ldb_dn_get_linearized(source_dn),
270 ldb_errstring(ldb)));
272 } else if (ret != LDB_SUCCESS) {
273 ldb_asprintf_errstring(ldb, "Failed to %s backlink from %s to %s - %s",
274 bl->active?"add":"remove",
275 ldb_dn_get_linearized(source_dn),
276 ldb_dn_get_linearized(target_dn),
278 talloc_free(tmp_ctx);
281 talloc_free(tmp_ctx);
286 add a backlink to the list of backlinks to add/delete in the prepare
289 static int replmd_add_backlink(struct ldb_module *module, const struct dsdb_schema *schema,
290 struct GUID *forward_guid, struct GUID *target_guid,
291 bool active, const struct dsdb_attribute *schema_attr, bool immediate)
293 const struct dsdb_attribute *target_attr;
294 struct la_backlink *bl;
295 struct replmd_private *replmd_private =
296 talloc_get_type_abort(ldb_module_get_private(module), struct replmd_private);
298 target_attr = dsdb_attribute_by_linkID(schema, schema_attr->linkID ^ 1);
301 * windows 2003 has a broken schema where the
302 * definition of msDS-IsDomainFor is missing (which is
303 * supposed to be the backlink of the
304 * msDS-HasDomainNCs attribute
309 /* see if its already in the list */
310 for (bl=replmd_private->la_backlinks; bl; bl=bl->next) {
311 if (GUID_equal(forward_guid, &bl->forward_guid) &&
312 GUID_equal(target_guid, &bl->target_guid) &&
313 (target_attr->lDAPDisplayName == bl->attr_name ||
314 strcmp(target_attr->lDAPDisplayName, bl->attr_name) == 0)) {
320 /* we found an existing one */
321 if (bl->active == active) {
324 DLIST_REMOVE(replmd_private->la_backlinks, bl);
329 if (replmd_private->bl_ctx == NULL) {
330 replmd_private->bl_ctx = talloc_new(replmd_private);
331 if (replmd_private->bl_ctx == NULL) {
332 ldb_module_oom(module);
333 return LDB_ERR_OPERATIONS_ERROR;
338 bl = talloc(replmd_private->bl_ctx, struct la_backlink);
340 ldb_module_oom(module);
341 return LDB_ERR_OPERATIONS_ERROR;
344 /* Ensure the schema does not go away before the bl->attr_name is used */
345 if (!talloc_reference(bl, schema)) {
347 ldb_module_oom(module);
348 return LDB_ERR_OPERATIONS_ERROR;
351 bl->attr_name = target_attr->lDAPDisplayName;
352 bl->forward_guid = *forward_guid;
353 bl->target_guid = *target_guid;
356 /* the caller may ask for this backlink to be processed
359 int ret = replmd_process_backlink(module, bl, NULL);
364 DLIST_ADD(replmd_private->la_backlinks, bl);
371 * Callback for most write operations in this module:
373 * notify the repl task that a object has changed. The notifies are
374 * gathered up in the replmd_private structure then written to the
375 * @REPLCHANGED object in each partition during the prepare_commit
377 static int replmd_op_callback(struct ldb_request *req, struct ldb_reply *ares)
380 struct replmd_replicated_request *ac =
381 talloc_get_type_abort(req->context, struct replmd_replicated_request);
382 struct replmd_private *replmd_private =
383 talloc_get_type_abort(ldb_module_get_private(ac->module), struct replmd_private);
384 struct nc_entry *modified_partition;
385 struct ldb_control *partition_ctrl;
386 const struct dsdb_control_current_partition *partition;
388 struct ldb_control **controls;
390 partition_ctrl = ldb_reply_get_control(ares, DSDB_CONTROL_CURRENT_PARTITION_OID);
392 controls = ares->controls;
393 if (ldb_request_get_control(ac->req,
394 DSDB_CONTROL_CURRENT_PARTITION_OID) == NULL) {
396 * Remove the current partition control from what we pass up
397 * the chain if it hasn't been requested manually.
399 controls = ldb_controls_except_specified(ares->controls, ares,
403 if (ares->error != LDB_SUCCESS) {
404 DEBUG(5,("%s failure. Error is: %s\n", __FUNCTION__, ldb_strerror(ares->error)));
405 return ldb_module_done(ac->req, controls,
406 ares->response, ares->error);
409 if (ares->type != LDB_REPLY_DONE) {
410 ldb_set_errstring(ldb_module_get_ctx(ac->module), "Invalid reply type for notify\n!");
411 return ldb_module_done(ac->req, NULL,
412 NULL, LDB_ERR_OPERATIONS_ERROR);
415 if (!partition_ctrl) {
416 ldb_set_errstring(ldb_module_get_ctx(ac->module),"No partition control on reply");
417 return ldb_module_done(ac->req, NULL,
418 NULL, LDB_ERR_OPERATIONS_ERROR);
421 partition = talloc_get_type_abort(partition_ctrl->data,
422 struct dsdb_control_current_partition);
424 if (ac->seq_num > 0) {
425 for (modified_partition = replmd_private->ncs; modified_partition;
426 modified_partition = modified_partition->next) {
427 if (ldb_dn_compare(modified_partition->dn, partition->dn) == 0) {
432 if (modified_partition == NULL) {
433 modified_partition = talloc_zero(replmd_private, struct nc_entry);
434 if (!modified_partition) {
435 ldb_oom(ldb_module_get_ctx(ac->module));
436 return ldb_module_done(ac->req, NULL,
437 NULL, LDB_ERR_OPERATIONS_ERROR);
439 modified_partition->dn = ldb_dn_copy(modified_partition, partition->dn);
440 if (!modified_partition->dn) {
441 ldb_oom(ldb_module_get_ctx(ac->module));
442 return ldb_module_done(ac->req, NULL,
443 NULL, LDB_ERR_OPERATIONS_ERROR);
445 DLIST_ADD(replmd_private->ncs, modified_partition);
448 if (ac->seq_num > modified_partition->mod_usn) {
449 modified_partition->mod_usn = ac->seq_num;
451 modified_partition->mod_usn_urgent = ac->seq_num;
456 if (ac->apply_mode) {
460 ret = replmd_replicated_apply_next(ac);
461 if (ret != LDB_SUCCESS) {
462 return ldb_module_done(ac->req, NULL, NULL, ret);
466 /* free the partition control container here, for the
467 * common path. Other cases will have it cleaned up
468 * eventually with the ares */
469 talloc_free(partition_ctrl);
470 return ldb_module_done(ac->req, controls,
471 ares->response, LDB_SUCCESS);
477 * update a @REPLCHANGED record in each partition if there have been
478 * any writes of replicated data in the partition
480 static int replmd_notify_store(struct ldb_module *module, struct ldb_request *parent)
482 struct replmd_private *replmd_private =
483 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
485 while (replmd_private->ncs) {
487 struct nc_entry *modified_partition = replmd_private->ncs;
489 ret = dsdb_module_save_partition_usn(module, modified_partition->dn,
490 modified_partition->mod_usn,
491 modified_partition->mod_usn_urgent, parent);
492 if (ret != LDB_SUCCESS) {
493 DEBUG(0,(__location__ ": Failed to save partition uSN for %s\n",
494 ldb_dn_get_linearized(modified_partition->dn)));
497 DLIST_REMOVE(replmd_private->ncs, modified_partition);
498 talloc_free(modified_partition);
506 created a replmd_replicated_request context
508 static struct replmd_replicated_request *replmd_ctx_init(struct ldb_module *module,
509 struct ldb_request *req)
511 struct ldb_context *ldb;
512 struct replmd_replicated_request *ac;
514 ldb = ldb_module_get_ctx(module);
516 ac = talloc_zero(req, struct replmd_replicated_request);
525 ac->schema = dsdb_get_schema(ldb, ac);
527 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
528 "replmd_modify: no dsdb_schema loaded");
529 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
537 add a time element to a record
539 static int add_time_element(struct ldb_message *msg, const char *attr, time_t t)
541 struct ldb_message_element *el;
545 if (ldb_msg_find_element(msg, attr) != NULL) {
549 s = ldb_timestring(msg, t);
551 return LDB_ERR_OPERATIONS_ERROR;
554 ret = ldb_msg_add_string(msg, attr, s);
555 if (ret != LDB_SUCCESS) {
559 el = ldb_msg_find_element(msg, attr);
560 /* always set as replace. This works because on add ops, the flag
562 el->flags = LDB_FLAG_MOD_REPLACE;
568 add a uint64_t element to a record
570 static int add_uint64_element(struct ldb_context *ldb, struct ldb_message *msg,
571 const char *attr, uint64_t v)
573 struct ldb_message_element *el;
576 if (ldb_msg_find_element(msg, attr) != NULL) {
580 ret = samdb_msg_add_uint64(ldb, msg, msg, attr, v);
581 if (ret != LDB_SUCCESS) {
585 el = ldb_msg_find_element(msg, attr);
586 /* always set as replace. This works because on add ops, the flag
588 el->flags = LDB_FLAG_MOD_REPLACE;
593 static int replmd_replPropertyMetaData1_attid_sort(const struct replPropertyMetaData1 *m1,
594 const struct replPropertyMetaData1 *m2,
595 const uint32_t *rdn_attid)
597 if (m1->attid == m2->attid) {
602 * the rdn attribute should be at the end!
603 * so we need to return a value greater than zero
604 * which means m1 is greater than m2
606 if (m1->attid == *rdn_attid) {
611 * the rdn attribute should be at the end!
612 * so we need to return a value less than zero
613 * which means m2 is greater than m1
615 if (m2->attid == *rdn_attid) {
619 return m1->attid > m2->attid ? 1 : -1;
622 static int replmd_replPropertyMetaDataCtr1_sort(struct replPropertyMetaDataCtr1 *ctr1,
623 const struct dsdb_schema *schema,
626 const char *rdn_name;
627 const struct dsdb_attribute *rdn_sa;
629 rdn_name = ldb_dn_get_rdn_name(dn);
631 DEBUG(0,(__location__ ": No rDN for %s?\n", ldb_dn_get_linearized(dn)));
632 return LDB_ERR_OPERATIONS_ERROR;
635 rdn_sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
636 if (rdn_sa == NULL) {
637 DEBUG(0,(__location__ ": No sa found for rDN %s for %s\n", rdn_name, ldb_dn_get_linearized(dn)));
638 return LDB_ERR_OPERATIONS_ERROR;
641 DEBUG(6,("Sorting rpmd with attid exception %u rDN=%s DN=%s\n",
642 rdn_sa->attributeID_id, rdn_name, ldb_dn_get_linearized(dn)));
644 LDB_TYPESAFE_QSORT(ctr1->array, ctr1->count, &rdn_sa->attributeID_id, replmd_replPropertyMetaData1_attid_sort);
649 static int replmd_ldb_message_element_attid_sort(const struct ldb_message_element *e1,
650 const struct ldb_message_element *e2,
651 const struct dsdb_schema *schema)
653 const struct dsdb_attribute *a1;
654 const struct dsdb_attribute *a2;
657 * TODO: make this faster by caching the dsdb_attribute pointer
658 * on the ldb_messag_element
661 a1 = dsdb_attribute_by_lDAPDisplayName(schema, e1->name);
662 a2 = dsdb_attribute_by_lDAPDisplayName(schema, e2->name);
664 if (a1->attributeID_id == a2->attributeID_id) {
667 return a1->attributeID_id > a2->attributeID_id ? 1 : -1;
670 static void replmd_ldb_message_sort(struct ldb_message *msg,
671 const struct dsdb_schema *schema)
673 LDB_TYPESAFE_QSORT(msg->elements, msg->num_elements, schema, replmd_ldb_message_element_attid_sort);
676 static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
677 const struct GUID *invocation_id, uint64_t seq_num,
678 uint64_t local_usn, NTTIME nttime, uint32_t version, bool deleted);
682 fix up linked attributes in replmd_add.
683 This involves setting up the right meta-data in extended DN
684 components, and creating backlinks to the object
686 static int replmd_add_fix_la(struct ldb_module *module, struct ldb_message_element *el,
687 uint64_t seq_num, const struct GUID *invocationId, time_t t,
688 struct GUID *guid, const struct dsdb_attribute *sa, struct ldb_request *parent)
691 TALLOC_CTX *tmp_ctx = talloc_new(el->values);
692 struct ldb_context *ldb = ldb_module_get_ctx(module);
694 /* We will take a reference to the schema in replmd_add_backlink */
695 const struct dsdb_schema *schema = dsdb_get_schema(ldb, NULL);
698 unix_to_nt_time(&now, t);
700 for (i=0; i<el->num_values; i++) {
701 struct ldb_val *v = &el->values[i];
702 struct dsdb_dn *dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, v, sa->syntax->ldap_oid);
703 struct GUID target_guid;
707 /* note that the DN already has the extended
708 components from the extended_dn_store module */
709 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &target_guid, "GUID");
710 if (!NT_STATUS_IS_OK(status) || GUID_all_zero(&target_guid)) {
711 ret = dsdb_module_guid_by_dn(module, dsdb_dn->dn, &target_guid, parent);
712 if (ret != LDB_SUCCESS) {
713 talloc_free(tmp_ctx);
716 ret = dsdb_set_extended_dn_guid(dsdb_dn->dn, &target_guid, "GUID");
717 if (ret != LDB_SUCCESS) {
718 talloc_free(tmp_ctx);
723 ret = replmd_build_la_val(el->values, v, dsdb_dn, invocationId,
724 seq_num, seq_num, now, 0, false);
725 if (ret != LDB_SUCCESS) {
726 talloc_free(tmp_ctx);
730 ret = replmd_add_backlink(module, schema, guid, &target_guid, true, sa, false);
731 if (ret != LDB_SUCCESS) {
732 talloc_free(tmp_ctx);
737 talloc_free(tmp_ctx);
743 intercept add requests
745 static int replmd_add(struct ldb_module *module, struct ldb_request *req)
747 struct samldb_msds_intid_persistant *msds_intid_struct;
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 if (m->attid == 0x20030) {
921 const struct ldb_val *rdn_val = ldb_dn_get_rdn_val(msg->dn);
924 if (rdn_val == NULL) {
927 return LDB_ERR_OPERATIONS_ERROR;
930 rdn = (const char*)rdn_val->data;
931 if (strcmp(rdn, "Deleted Objects") == 0) {
933 * Set the originating_change_time to 29/12/9999 at 23:59:59
934 * as specified in MS-ADTS 7.1.1.4.2 Deleted Objects Container
936 m->originating_change_time = DELETED_OBJECT_CONTAINER_CHANGE_TIME;
938 m->originating_change_time = now;
941 m->originating_change_time = now;
943 m->originating_invocation_id = *our_invocation_id;
944 m->originating_usn = ac->seq_num;
945 m->local_usn = ac->seq_num;
949 /* fix meta data count */
950 nmd.ctr.ctr1.count = ni;
953 * sort meta data array, and move the rdn attribute entry to the end
955 ret = replmd_replPropertyMetaDataCtr1_sort(&nmd.ctr.ctr1, ac->schema, msg->dn);
956 if (ret != LDB_SUCCESS) {
961 /* generated NDR encoded values */
962 ndr_err = ndr_push_struct_blob(&nmd_value, msg,
964 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
965 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
968 return LDB_ERR_OPERATIONS_ERROR;
972 * add the autogenerated values
974 ret = dsdb_msg_add_guid(msg, &guid, "objectGUID");
975 if (ret != LDB_SUCCESS) {
980 ret = ldb_msg_add_string(msg, "whenChanged", time_str);
981 if (ret != LDB_SUCCESS) {
986 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNCreated", ac->seq_num);
987 if (ret != LDB_SUCCESS) {
992 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ac->seq_num);
993 if (ret != LDB_SUCCESS) {
998 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &nmd_value, NULL);
999 if (ret != LDB_SUCCESS) {
1006 * sort the attributes by attid before storing the object
1008 replmd_ldb_message_sort(msg, ac->schema);
1010 objectclass_el = ldb_msg_find_element(msg, "objectClass");
1011 is_urgent = replmd_check_urgent_objectclass(objectclass_el,
1012 REPL_URGENT_ON_CREATE);
1014 ac->is_urgent = is_urgent;
1015 ret = ldb_build_add_req(&down_req, ldb, ac,
1018 ac, replmd_op_callback,
1021 LDB_REQ_SET_LOCATION(down_req);
1022 if (ret != LDB_SUCCESS) {
1027 /* current partition control is needed by "replmd_op_callback" */
1028 if (ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID) == NULL) {
1029 ret = ldb_request_add_control(down_req,
1030 DSDB_CONTROL_CURRENT_PARTITION_OID,
1032 if (ret != LDB_SUCCESS) {
1038 if (functional_level == DS_DOMAIN_FUNCTION_2000) {
1039 ret = ldb_request_add_control(down_req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
1040 if (ret != LDB_SUCCESS) {
1046 /* mark the control done */
1048 control->critical = 0;
1050 if (ldb_dn_compare_base(ac->schema->base_dn, req->op.add.message->dn) != 0) {
1052 /* Update the usn in the SAMLDB_MSDS_INTID_OPAQUE opaque */
1053 msds_intid_struct = (struct samldb_msds_intid_persistant *) ldb_get_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE);
1054 if (msds_intid_struct) {
1055 msds_intid_struct->usn = ac->seq_num;
1058 /* go on with the call chain */
1059 return ldb_next_request(module, down_req);
1064 * update the replPropertyMetaData for one element
1066 static int replmd_update_rpmd_element(struct ldb_context *ldb,
1067 struct ldb_message *msg,
1068 struct ldb_message_element *el,
1069 struct ldb_message_element *old_el,
1070 struct replPropertyMetaDataBlob *omd,
1071 const struct dsdb_schema *schema,
1073 const struct GUID *our_invocation_id,
1075 struct ldb_request *req)
1078 const struct dsdb_attribute *a;
1079 struct replPropertyMetaData1 *md1;
1081 a = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
1083 if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID)) {
1084 /* allow this to make it possible for dbcheck
1085 to remove bad attributes */
1089 DEBUG(0,(__location__ ": Unable to find attribute %s in schema\n",
1091 return LDB_ERR_OPERATIONS_ERROR;
1094 if ((a->systemFlags & DS_FLAG_ATTR_NOT_REPLICATED) || (a->systemFlags & DS_FLAG_ATTR_IS_CONSTRUCTED)) {
1098 /* if the attribute's value haven't changed then return LDB_SUCCESS
1099 * Unless we have the provision control or if the attribute is
1100 * interSiteTopologyGenerator as this page explain: http://support.microsoft.com/kb/224815
1101 * this attribute is periodicaly written by the DC responsible for the intersite generation
1104 if (old_el != NULL && ldb_msg_element_compare(el, old_el) == 0) {
1105 if (strcmp(el->name, "interSiteTopologyGenerator") != 0 &&
1106 !ldb_request_get_control(req, LDB_CONTROL_PROVISION_OID)) {
1108 * allow this to make it possible for dbcheck
1109 * to rebuild broken metadata
1115 for (i=0; i<omd->ctr.ctr1.count; i++) {
1116 if (a->attributeID_id == omd->ctr.ctr1.array[i].attid) break;
1119 if (a->linkID != 0 && dsdb_functional_level(ldb) > DS_DOMAIN_FUNCTION_2000) {
1120 /* linked attributes are not stored in
1121 replPropertyMetaData in FL above w2k, but we do
1122 raise the seqnum for the object */
1123 if (*seq_num == 0 &&
1124 ldb_sequence_number(ldb, LDB_SEQ_NEXT, seq_num) != LDB_SUCCESS) {
1125 return LDB_ERR_OPERATIONS_ERROR;
1130 if (i == omd->ctr.ctr1.count) {
1131 /* we need to add a new one */
1132 omd->ctr.ctr1.array = talloc_realloc(msg, omd->ctr.ctr1.array,
1133 struct replPropertyMetaData1, omd->ctr.ctr1.count+1);
1134 if (omd->ctr.ctr1.array == NULL) {
1136 return LDB_ERR_OPERATIONS_ERROR;
1138 omd->ctr.ctr1.count++;
1139 ZERO_STRUCT(omd->ctr.ctr1.array[i]);
1142 /* Get a new sequence number from the backend. We only do this
1143 * if we have a change that requires a new
1144 * replPropertyMetaData element
1146 if (*seq_num == 0) {
1147 int ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, seq_num);
1148 if (ret != LDB_SUCCESS) {
1149 return LDB_ERR_OPERATIONS_ERROR;
1153 md1 = &omd->ctr.ctr1.array[i];
1155 md1->attid = a->attributeID_id;
1156 if (md1->attid == 0x20030) {
1157 const struct ldb_val *rdn_val = ldb_dn_get_rdn_val(msg->dn);
1160 if (rdn_val == NULL) {
1162 return LDB_ERR_OPERATIONS_ERROR;
1165 rdn = (const char*)rdn_val->data;
1166 if (strcmp(rdn, "Deleted Objects") == 0) {
1168 * Set the originating_change_time to 29/12/9999 at 23:59:59
1169 * as specified in MS-ADTS 7.1.1.4.2 Deleted Objects Container
1171 md1->originating_change_time = DELETED_OBJECT_CONTAINER_CHANGE_TIME;
1173 md1->originating_change_time = now;
1176 md1->originating_change_time = now;
1178 md1->originating_invocation_id = *our_invocation_id;
1179 md1->originating_usn = *seq_num;
1180 md1->local_usn = *seq_num;
1185 static uint64_t find_max_local_usn(struct replPropertyMetaDataBlob omd)
1187 uint32_t count = omd.ctr.ctr1.count;
1190 for (i=0; i < count; i++) {
1191 struct replPropertyMetaData1 m = omd.ctr.ctr1.array[i];
1192 if (max < m.local_usn) {
1200 * update the replPropertyMetaData object each time we modify an
1201 * object. This is needed for DRS replication, as the merge on the
1202 * client is based on this object
1204 static int replmd_update_rpmd(struct ldb_module *module,
1205 const struct dsdb_schema *schema,
1206 struct ldb_request *req,
1207 const char * const *rename_attrs,
1208 struct ldb_message *msg, uint64_t *seq_num,
1210 bool *is_urgent, bool *rodc)
1212 const struct ldb_val *omd_value;
1213 enum ndr_err_code ndr_err;
1214 struct replPropertyMetaDataBlob omd;
1217 const struct GUID *our_invocation_id;
1219 const char * const *attrs = NULL;
1220 const char * const attrs1[] = { "replPropertyMetaData", "*", NULL };
1221 const char * const attrs2[] = { "uSNChanged", "objectClass", "instanceType", NULL };
1222 struct ldb_result *res;
1223 struct ldb_context *ldb;
1224 struct ldb_message_element *objectclass_el;
1225 enum urgent_situation situation;
1226 bool rmd_is_provided;
1229 attrs = rename_attrs;
1234 ldb = ldb_module_get_ctx(module);
1236 our_invocation_id = samdb_ntds_invocation_id(ldb);
1237 if (!our_invocation_id) {
1238 /* this happens during an initial vampire while
1239 updating the schema */
1240 DEBUG(5,("No invocationID - skipping replPropertyMetaData update\n"));
1244 unix_to_nt_time(&now, t);
1246 if (ldb_request_get_control(req, DSDB_CONTROL_CHANGEREPLMETADATA_OID)) {
1247 rmd_is_provided = true;
1249 rmd_is_provided = false;
1252 /* if isDeleted is present and is TRUE, then we consider we are deleting,
1253 * otherwise we consider we are updating */
1254 if (ldb_msg_check_string_attribute(msg, "isDeleted", "TRUE")) {
1255 situation = REPL_URGENT_ON_DELETE;
1256 } else if (rename_attrs) {
1257 situation = REPL_URGENT_ON_CREATE | REPL_URGENT_ON_DELETE;
1259 situation = REPL_URGENT_ON_UPDATE;
1262 if (rmd_is_provided) {
1263 /* In this case the change_replmetadata control was supplied */
1264 /* We check that it's the only attribute that is provided
1265 * (it's a rare case so it's better to keep the code simplier)
1266 * We also check that the highest local_usn is bigger than
1269 if( msg->num_elements != 1 ||
1270 strncmp(msg->elements[0].name,
1271 "replPropertyMetaData", 20) ) {
1272 DEBUG(0,(__location__ ": changereplmetada control called without "\
1273 "a specified replPropertyMetaData attribute or with others\n"));
1274 return LDB_ERR_OPERATIONS_ERROR;
1276 if (situation != REPL_URGENT_ON_UPDATE) {
1277 DEBUG(0,(__location__ ": changereplmetada control can't be called when deleting an object\n"));
1278 return LDB_ERR_OPERATIONS_ERROR;
1280 omd_value = ldb_msg_find_ldb_val(msg, "replPropertyMetaData");
1282 DEBUG(0,(__location__ ": replPropertyMetaData was not specified for Object %s\n",
1283 ldb_dn_get_linearized(msg->dn)));
1284 return LDB_ERR_OPERATIONS_ERROR;
1286 ndr_err = ndr_pull_struct_blob(omd_value, msg, &omd,
1287 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
1288 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1289 DEBUG(0,(__location__ ": Failed to parse replPropertyMetaData for %s\n",
1290 ldb_dn_get_linearized(msg->dn)));
1291 return LDB_ERR_OPERATIONS_ERROR;
1293 *seq_num = find_max_local_usn(omd);
1295 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, attrs2,
1296 DSDB_FLAG_NEXT_MODULE |
1297 DSDB_SEARCH_SHOW_RECYCLED |
1298 DSDB_SEARCH_SHOW_EXTENDED_DN |
1299 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
1300 DSDB_SEARCH_REVEAL_INTERNALS, req);
1302 if (ret != LDB_SUCCESS) {
1306 objectclass_el = ldb_msg_find_element(res->msgs[0], "objectClass");
1307 if (is_urgent && replmd_check_urgent_objectclass(objectclass_el,
1312 db_seq = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNChanged", 0);
1313 if (*seq_num <= db_seq) {
1314 DEBUG(0,(__location__ ": changereplmetada control provided but max(local_usn)"\
1315 " is less or equal to uSNChanged (max = %lld uSNChanged = %lld)\n",
1316 (long long)*seq_num, (long long)db_seq));
1317 return LDB_ERR_OPERATIONS_ERROR;
1321 /* search for the existing replPropertyMetaDataBlob. We need
1322 * to use REVEAL and ask for DNs in storage format to support
1323 * the check for values being the same in
1324 * replmd_update_rpmd_element()
1326 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, attrs,
1327 DSDB_FLAG_NEXT_MODULE |
1328 DSDB_SEARCH_SHOW_RECYCLED |
1329 DSDB_SEARCH_SHOW_EXTENDED_DN |
1330 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
1331 DSDB_SEARCH_REVEAL_INTERNALS, req);
1332 if (ret != LDB_SUCCESS) {
1336 objectclass_el = ldb_msg_find_element(res->msgs[0], "objectClass");
1337 if (is_urgent && replmd_check_urgent_objectclass(objectclass_el,
1342 omd_value = ldb_msg_find_ldb_val(res->msgs[0], "replPropertyMetaData");
1344 DEBUG(0,(__location__ ": Object %s does not have a replPropertyMetaData attribute\n",
1345 ldb_dn_get_linearized(msg->dn)));
1346 return LDB_ERR_OPERATIONS_ERROR;
1349 ndr_err = ndr_pull_struct_blob(omd_value, msg, &omd,
1350 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
1351 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1352 DEBUG(0,(__location__ ": Failed to parse replPropertyMetaData for %s\n",
1353 ldb_dn_get_linearized(msg->dn)));
1354 return LDB_ERR_OPERATIONS_ERROR;
1357 if (omd.version != 1) {
1358 DEBUG(0,(__location__ ": bad version %u in replPropertyMetaData for %s\n",
1359 omd.version, ldb_dn_get_linearized(msg->dn)));
1360 return LDB_ERR_OPERATIONS_ERROR;
1363 for (i=0; i<msg->num_elements; i++) {
1364 struct ldb_message_element *old_el;
1365 old_el = ldb_msg_find_element(res->msgs[0], msg->elements[i].name);
1366 ret = replmd_update_rpmd_element(ldb, msg, &msg->elements[i], old_el, &omd, schema, seq_num,
1367 our_invocation_id, now, req);
1368 if (ret != LDB_SUCCESS) {
1372 if (is_urgent && !*is_urgent && (situation == REPL_URGENT_ON_UPDATE)) {
1373 *is_urgent = replmd_check_urgent_attribute(&msg->elements[i]);
1379 * replmd_update_rpmd_element has done an update if the
1382 if (*seq_num != 0) {
1383 struct ldb_val *md_value;
1384 struct ldb_message_element *el;
1386 /*if we are RODC and this is a DRSR update then its ok*/
1387 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)
1388 && !ldb_request_get_control(req, DSDB_CONTROL_DBCHECK_MODIFY_RO_REPLICA)) {
1389 unsigned instanceType;
1391 ret = samdb_rodc(ldb, rodc);
1392 if (ret != LDB_SUCCESS) {
1393 DEBUG(4, (__location__ ": unable to tell if we are an RODC\n"));
1395 ldb_set_errstring(ldb, "RODC modify is forbidden!");
1396 return LDB_ERR_REFERRAL;
1399 instanceType = ldb_msg_find_attr_as_uint(res->msgs[0], "instanceType", INSTANCE_TYPE_WRITE);
1400 if (!(instanceType & INSTANCE_TYPE_WRITE)) {
1401 return ldb_error(ldb, LDB_ERR_UNWILLING_TO_PERFORM,
1402 "cannot change replicated attribute on partial replica");
1406 md_value = talloc(msg, struct ldb_val);
1407 if (md_value == NULL) {
1409 return LDB_ERR_OPERATIONS_ERROR;
1412 ret = replmd_replPropertyMetaDataCtr1_sort(&omd.ctr.ctr1, schema, msg->dn);
1413 if (ret != LDB_SUCCESS) {
1417 ndr_err = ndr_push_struct_blob(md_value, msg, &omd,
1418 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
1419 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1420 DEBUG(0,(__location__ ": Failed to marshall replPropertyMetaData for %s\n",
1421 ldb_dn_get_linearized(msg->dn)));
1422 return LDB_ERR_OPERATIONS_ERROR;
1425 ret = ldb_msg_add_empty(msg, "replPropertyMetaData", LDB_FLAG_MOD_REPLACE, &el);
1426 if (ret != LDB_SUCCESS) {
1427 DEBUG(0,(__location__ ": Failed to add updated replPropertyMetaData %s\n",
1428 ldb_dn_get_linearized(msg->dn)));
1433 el->values = md_value;
1440 struct dsdb_dn *dsdb_dn;
1445 static int parsed_dn_compare(struct parsed_dn *pdn1, struct parsed_dn *pdn2)
1447 return GUID_compare(pdn1->guid, pdn2->guid);
1450 static struct parsed_dn *parsed_dn_find(struct parsed_dn *pdn,
1451 unsigned int count, struct GUID *guid,
1454 struct parsed_dn *ret;
1456 if (dn && GUID_all_zero(guid)) {
1457 /* when updating a link using DRS, we sometimes get a
1458 NULL GUID. We then need to try and match by DN */
1459 for (i=0; i<count; i++) {
1460 if (ldb_dn_compare(pdn[i].dsdb_dn->dn, dn) == 0) {
1461 dsdb_get_extended_dn_guid(pdn[i].dsdb_dn->dn, guid, "GUID");
1467 BINARY_ARRAY_SEARCH(pdn, count, guid, guid, GUID_compare, ret);
1472 get a series of message element values as an array of DNs and GUIDs
1473 the result is sorted by GUID
1475 static int get_parsed_dns(struct ldb_module *module, TALLOC_CTX *mem_ctx,
1476 struct ldb_message_element *el, struct parsed_dn **pdn,
1477 const char *ldap_oid, struct ldb_request *parent)
1480 struct ldb_context *ldb = ldb_module_get_ctx(module);
1487 (*pdn) = talloc_array(mem_ctx, struct parsed_dn, el->num_values);
1489 ldb_module_oom(module);
1490 return LDB_ERR_OPERATIONS_ERROR;
1493 for (i=0; i<el->num_values; i++) {
1494 struct ldb_val *v = &el->values[i];
1497 struct parsed_dn *p;
1501 p->dsdb_dn = dsdb_dn_parse(*pdn, ldb, v, ldap_oid);
1502 if (p->dsdb_dn == NULL) {
1503 return LDB_ERR_INVALID_DN_SYNTAX;
1506 dn = p->dsdb_dn->dn;
1508 p->guid = talloc(*pdn, struct GUID);
1509 if (p->guid == NULL) {
1510 ldb_module_oom(module);
1511 return LDB_ERR_OPERATIONS_ERROR;
1514 status = dsdb_get_extended_dn_guid(dn, p->guid, "GUID");
1515 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1516 /* we got a DN without a GUID - go find the GUID */
1517 int ret = dsdb_module_guid_by_dn(module, dn, p->guid, parent);
1518 if (ret != LDB_SUCCESS) {
1519 ldb_asprintf_errstring(ldb, "Unable to find GUID for DN %s\n",
1520 ldb_dn_get_linearized(dn));
1521 if (ret == LDB_ERR_NO_SUCH_OBJECT &&
1522 LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE &&
1523 ldb_attr_cmp(el->name, "member") == 0) {
1524 return LDB_ERR_UNWILLING_TO_PERFORM;
1528 ret = dsdb_set_extended_dn_guid(dn, p->guid, "GUID");
1529 if (ret != LDB_SUCCESS) {
1532 } else if (!NT_STATUS_IS_OK(status)) {
1533 return LDB_ERR_OPERATIONS_ERROR;
1536 /* keep a pointer to the original ldb_val */
1540 TYPESAFE_QSORT(*pdn, el->num_values, parsed_dn_compare);
1546 build a new extended DN, including all meta data fields
1548 RMD_FLAGS = DSDB_RMD_FLAG_* bits
1549 RMD_ADDTIME = originating_add_time
1550 RMD_INVOCID = originating_invocation_id
1551 RMD_CHANGETIME = originating_change_time
1552 RMD_ORIGINATING_USN = originating_usn
1553 RMD_LOCAL_USN = local_usn
1554 RMD_VERSION = version
1556 static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1557 const struct GUID *invocation_id, uint64_t seq_num,
1558 uint64_t local_usn, NTTIME nttime, uint32_t version, bool deleted)
1560 struct ldb_dn *dn = dsdb_dn->dn;
1561 const char *tstring, *usn_string, *flags_string;
1562 struct ldb_val tval;
1564 struct ldb_val usnv, local_usnv;
1565 struct ldb_val vers, flagsv;
1568 const char *dnstring;
1570 uint32_t rmd_flags = deleted?DSDB_RMD_FLAG_DELETED:0;
1572 tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)nttime);
1574 return LDB_ERR_OPERATIONS_ERROR;
1576 tval = data_blob_string_const(tstring);
1578 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)seq_num);
1580 return LDB_ERR_OPERATIONS_ERROR;
1582 usnv = data_blob_string_const(usn_string);
1584 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)local_usn);
1586 return LDB_ERR_OPERATIONS_ERROR;
1588 local_usnv = data_blob_string_const(usn_string);
1590 vstring = talloc_asprintf(mem_ctx, "%lu", (unsigned long)version);
1592 return LDB_ERR_OPERATIONS_ERROR;
1594 vers = data_blob_string_const(vstring);
1596 status = GUID_to_ndr_blob(invocation_id, dn, &iid);
1597 if (!NT_STATUS_IS_OK(status)) {
1598 return LDB_ERR_OPERATIONS_ERROR;
1601 flags_string = talloc_asprintf(mem_ctx, "%u", rmd_flags);
1602 if (!flags_string) {
1603 return LDB_ERR_OPERATIONS_ERROR;
1605 flagsv = data_blob_string_const(flags_string);
1607 ret = ldb_dn_set_extended_component(dn, "RMD_FLAGS", &flagsv);
1608 if (ret != LDB_SUCCESS) return ret;
1609 ret = ldb_dn_set_extended_component(dn, "RMD_ADDTIME", &tval);
1610 if (ret != LDB_SUCCESS) return ret;
1611 ret = ldb_dn_set_extended_component(dn, "RMD_INVOCID", &iid);
1612 if (ret != LDB_SUCCESS) return ret;
1613 ret = ldb_dn_set_extended_component(dn, "RMD_CHANGETIME", &tval);
1614 if (ret != LDB_SUCCESS) return ret;
1615 ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &local_usnv);
1616 if (ret != LDB_SUCCESS) return ret;
1617 ret = ldb_dn_set_extended_component(dn, "RMD_ORIGINATING_USN", &usnv);
1618 if (ret != LDB_SUCCESS) return ret;
1619 ret = ldb_dn_set_extended_component(dn, "RMD_VERSION", &vers);
1620 if (ret != LDB_SUCCESS) return ret;
1622 dnstring = dsdb_dn_get_extended_linearized(mem_ctx, dsdb_dn, 1);
1623 if (dnstring == NULL) {
1624 return LDB_ERR_OPERATIONS_ERROR;
1626 *v = data_blob_string_const(dnstring);
1631 static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1632 struct dsdb_dn *old_dsdb_dn, const struct GUID *invocation_id,
1633 uint64_t seq_num, uint64_t local_usn, NTTIME nttime,
1634 uint32_t version, bool deleted);
1637 check if any links need upgrading from w2k format
1639 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.
1641 static int replmd_check_upgrade_links(struct parsed_dn *dns, uint32_t count, struct ldb_message_element *parent_ctx, const struct GUID *invocation_id)
1644 for (i=0; i<count; i++) {
1649 status = dsdb_get_extended_dn_uint32(dns[i].dsdb_dn->dn, &version, "RMD_VERSION");
1650 if (!NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1654 /* it's an old one that needs upgrading */
1655 ret = replmd_update_la_val(parent_ctx->values, dns[i].v, dns[i].dsdb_dn, dns[i].dsdb_dn, invocation_id,
1657 if (ret != LDB_SUCCESS) {
1665 update an extended DN, including all meta data fields
1667 see replmd_build_la_val for value names
1669 static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1670 struct dsdb_dn *old_dsdb_dn, const struct GUID *invocation_id,
1671 uint64_t seq_num, uint64_t local_usn, NTTIME nttime,
1672 uint32_t version, bool deleted)
1674 struct ldb_dn *dn = dsdb_dn->dn;
1675 const char *tstring, *usn_string, *flags_string;
1676 struct ldb_val tval;
1678 struct ldb_val usnv, local_usnv;
1679 struct ldb_val vers, flagsv;
1680 const struct ldb_val *old_addtime;
1681 uint32_t old_version;
1684 const char *dnstring;
1686 uint32_t rmd_flags = deleted?DSDB_RMD_FLAG_DELETED:0;
1688 tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)nttime);
1690 return LDB_ERR_OPERATIONS_ERROR;
1692 tval = data_blob_string_const(tstring);
1694 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)seq_num);
1696 return LDB_ERR_OPERATIONS_ERROR;
1698 usnv = data_blob_string_const(usn_string);
1700 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)local_usn);
1702 return LDB_ERR_OPERATIONS_ERROR;
1704 local_usnv = data_blob_string_const(usn_string);
1706 status = GUID_to_ndr_blob(invocation_id, dn, &iid);
1707 if (!NT_STATUS_IS_OK(status)) {
1708 return LDB_ERR_OPERATIONS_ERROR;
1711 flags_string = talloc_asprintf(mem_ctx, "%u", rmd_flags);
1712 if (!flags_string) {
1713 return LDB_ERR_OPERATIONS_ERROR;
1715 flagsv = data_blob_string_const(flags_string);
1717 ret = ldb_dn_set_extended_component(dn, "RMD_FLAGS", &flagsv);
1718 if (ret != LDB_SUCCESS) return ret;
1720 /* get the ADDTIME from the original */
1721 old_addtime = ldb_dn_get_extended_component(old_dsdb_dn->dn, "RMD_ADDTIME");
1722 if (old_addtime == NULL) {
1723 old_addtime = &tval;
1725 if (dsdb_dn != old_dsdb_dn ||
1726 ldb_dn_get_extended_component(dn, "RMD_ADDTIME") == NULL) {
1727 ret = ldb_dn_set_extended_component(dn, "RMD_ADDTIME", old_addtime);
1728 if (ret != LDB_SUCCESS) return ret;
1731 /* use our invocation id */
1732 ret = ldb_dn_set_extended_component(dn, "RMD_INVOCID", &iid);
1733 if (ret != LDB_SUCCESS) return ret;
1735 /* changetime is the current time */
1736 ret = ldb_dn_set_extended_component(dn, "RMD_CHANGETIME", &tval);
1737 if (ret != LDB_SUCCESS) return ret;
1739 /* update the USN */
1740 ret = ldb_dn_set_extended_component(dn, "RMD_ORIGINATING_USN", &usnv);
1741 if (ret != LDB_SUCCESS) return ret;
1743 ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &local_usnv);
1744 if (ret != LDB_SUCCESS) return ret;
1746 /* increase the version by 1 */
1747 status = dsdb_get_extended_dn_uint32(old_dsdb_dn->dn, &old_version, "RMD_VERSION");
1748 if (NT_STATUS_IS_OK(status) && old_version >= version) {
1749 version = old_version+1;
1751 vstring = talloc_asprintf(dn, "%lu", (unsigned long)version);
1752 vers = data_blob_string_const(vstring);
1753 ret = ldb_dn_set_extended_component(dn, "RMD_VERSION", &vers);
1754 if (ret != LDB_SUCCESS) return ret;
1756 dnstring = dsdb_dn_get_extended_linearized(mem_ctx, dsdb_dn, 1);
1757 if (dnstring == NULL) {
1758 return LDB_ERR_OPERATIONS_ERROR;
1760 *v = data_blob_string_const(dnstring);
1766 handle adding a linked attribute
1768 static int replmd_modify_la_add(struct ldb_module *module,
1769 const struct dsdb_schema *schema,
1770 struct ldb_message *msg,
1771 struct ldb_message_element *el,
1772 struct ldb_message_element *old_el,
1773 const struct dsdb_attribute *schema_attr,
1776 struct GUID *msg_guid,
1777 struct ldb_request *parent)
1780 struct parsed_dn *dns, *old_dns;
1781 TALLOC_CTX *tmp_ctx = talloc_new(msg);
1783 struct ldb_val *new_values = NULL;
1784 unsigned int num_new_values = 0;
1785 unsigned old_num_values = old_el?old_el->num_values:0;
1786 const struct GUID *invocation_id;
1787 struct ldb_context *ldb = ldb_module_get_ctx(module);
1790 unix_to_nt_time(&now, t);
1792 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid, parent);
1793 if (ret != LDB_SUCCESS) {
1794 talloc_free(tmp_ctx);
1798 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid, parent);
1799 if (ret != LDB_SUCCESS) {
1800 talloc_free(tmp_ctx);
1804 invocation_id = samdb_ntds_invocation_id(ldb);
1805 if (!invocation_id) {
1806 talloc_free(tmp_ctx);
1807 return LDB_ERR_OPERATIONS_ERROR;
1810 ret = replmd_check_upgrade_links(old_dns, old_num_values, old_el, invocation_id);
1811 if (ret != LDB_SUCCESS) {
1812 talloc_free(tmp_ctx);
1816 /* for each new value, see if it exists already with the same GUID */
1817 for (i=0; i<el->num_values; i++) {
1818 struct parsed_dn *p = parsed_dn_find(old_dns, old_num_values, dns[i].guid, NULL);
1820 /* this is a new linked attribute value */
1821 new_values = talloc_realloc(tmp_ctx, new_values, struct ldb_val, num_new_values+1);
1822 if (new_values == NULL) {
1823 ldb_module_oom(module);
1824 talloc_free(tmp_ctx);
1825 return LDB_ERR_OPERATIONS_ERROR;
1827 ret = replmd_build_la_val(new_values, &new_values[num_new_values], dns[i].dsdb_dn,
1828 invocation_id, seq_num, seq_num, now, 0, false);
1829 if (ret != LDB_SUCCESS) {
1830 talloc_free(tmp_ctx);
1835 /* this is only allowed if the GUID was
1836 previously deleted. */
1837 uint32_t rmd_flags = dsdb_dn_rmd_flags(p->dsdb_dn->dn);
1839 if (!(rmd_flags & DSDB_RMD_FLAG_DELETED)) {
1840 ldb_asprintf_errstring(ldb, "Attribute %s already exists for target GUID %s",
1841 el->name, GUID_string(tmp_ctx, p->guid));
1842 talloc_free(tmp_ctx);
1843 /* error codes for 'member' need to be
1845 if (ldb_attr_cmp(el->name, "member") == 0) {
1846 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1848 return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
1851 ret = replmd_update_la_val(old_el->values, p->v, dns[i].dsdb_dn, p->dsdb_dn,
1852 invocation_id, seq_num, seq_num, now, 0, false);
1853 if (ret != LDB_SUCCESS) {
1854 talloc_free(tmp_ctx);
1859 ret = replmd_add_backlink(module, schema, msg_guid, dns[i].guid, true, schema_attr, true);
1860 if (ret != LDB_SUCCESS) {
1861 talloc_free(tmp_ctx);
1866 /* add the new ones on to the end of the old values, constructing a new el->values */
1867 el->values = talloc_realloc(msg->elements, old_el?old_el->values:NULL,
1869 old_num_values+num_new_values);
1870 if (el->values == NULL) {
1871 ldb_module_oom(module);
1872 return LDB_ERR_OPERATIONS_ERROR;
1875 memcpy(&el->values[old_num_values], new_values, num_new_values*sizeof(struct ldb_val));
1876 el->num_values = old_num_values + num_new_values;
1878 talloc_steal(msg->elements, el->values);
1879 talloc_steal(el->values, new_values);
1881 talloc_free(tmp_ctx);
1883 /* we now tell the backend to replace all existing values
1884 with the one we have constructed */
1885 el->flags = LDB_FLAG_MOD_REPLACE;
1892 handle deleting all active linked attributes
1894 static int replmd_modify_la_delete(struct ldb_module *module,
1895 const struct dsdb_schema *schema,
1896 struct ldb_message *msg,
1897 struct ldb_message_element *el,
1898 struct ldb_message_element *old_el,
1899 const struct dsdb_attribute *schema_attr,
1902 struct GUID *msg_guid,
1903 struct ldb_request *parent)
1906 struct parsed_dn *dns, *old_dns;
1907 TALLOC_CTX *tmp_ctx = talloc_new(msg);
1909 const struct GUID *invocation_id;
1910 struct ldb_context *ldb = ldb_module_get_ctx(module);
1913 unix_to_nt_time(&now, t);
1915 /* check if there is nothing to delete */
1916 if ((!old_el || old_el->num_values == 0) &&
1917 el->num_values == 0) {
1921 if (!old_el || old_el->num_values == 0) {
1922 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1925 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid, parent);
1926 if (ret != LDB_SUCCESS) {
1927 talloc_free(tmp_ctx);
1931 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid, parent);
1932 if (ret != LDB_SUCCESS) {
1933 talloc_free(tmp_ctx);
1937 invocation_id = samdb_ntds_invocation_id(ldb);
1938 if (!invocation_id) {
1939 return LDB_ERR_OPERATIONS_ERROR;
1942 ret = replmd_check_upgrade_links(old_dns, old_el->num_values, old_el, invocation_id);
1943 if (ret != LDB_SUCCESS) {
1944 talloc_free(tmp_ctx);
1950 /* see if we are being asked to delete any links that
1951 don't exist or are already deleted */
1952 for (i=0; i<el->num_values; i++) {
1953 struct parsed_dn *p = &dns[i];
1954 struct parsed_dn *p2;
1957 p2 = parsed_dn_find(old_dns, old_el->num_values, p->guid, NULL);
1959 ldb_asprintf_errstring(ldb, "Attribute %s doesn't exist for target GUID %s",
1960 el->name, GUID_string(tmp_ctx, p->guid));
1961 if (ldb_attr_cmp(el->name, "member") == 0) {
1962 return LDB_ERR_UNWILLING_TO_PERFORM;
1964 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1967 rmd_flags = dsdb_dn_rmd_flags(p2->dsdb_dn->dn);
1968 if (rmd_flags & DSDB_RMD_FLAG_DELETED) {
1969 ldb_asprintf_errstring(ldb, "Attribute %s already deleted for target GUID %s",
1970 el->name, GUID_string(tmp_ctx, p->guid));
1971 if (ldb_attr_cmp(el->name, "member") == 0) {
1972 return LDB_ERR_UNWILLING_TO_PERFORM;
1974 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1979 /* for each new value, see if it exists already with the same GUID
1980 if it is not already deleted and matches the delete list then delete it
1982 for (i=0; i<old_el->num_values; i++) {
1983 struct parsed_dn *p = &old_dns[i];
1986 if (el->num_values && parsed_dn_find(dns, el->num_values, p->guid, NULL) == NULL) {
1990 rmd_flags = dsdb_dn_rmd_flags(p->dsdb_dn->dn);
1991 if (rmd_flags & DSDB_RMD_FLAG_DELETED) continue;
1993 ret = replmd_update_la_val(old_el->values, p->v, p->dsdb_dn, p->dsdb_dn,
1994 invocation_id, seq_num, seq_num, now, 0, true);
1995 if (ret != LDB_SUCCESS) {
1996 talloc_free(tmp_ctx);
2000 ret = replmd_add_backlink(module, schema, msg_guid, old_dns[i].guid, false, schema_attr, true);
2001 if (ret != LDB_SUCCESS) {
2002 talloc_free(tmp_ctx);
2007 el->values = talloc_steal(msg->elements, old_el->values);
2008 el->num_values = old_el->num_values;
2010 talloc_free(tmp_ctx);
2012 /* we now tell the backend to replace all existing values
2013 with the one we have constructed */
2014 el->flags = LDB_FLAG_MOD_REPLACE;
2020 handle replacing a linked attribute
2022 static int replmd_modify_la_replace(struct ldb_module *module,
2023 const struct dsdb_schema *schema,
2024 struct ldb_message *msg,
2025 struct ldb_message_element *el,
2026 struct ldb_message_element *old_el,
2027 const struct dsdb_attribute *schema_attr,
2030 struct GUID *msg_guid,
2031 struct ldb_request *parent)
2034 struct parsed_dn *dns, *old_dns;
2035 TALLOC_CTX *tmp_ctx = talloc_new(msg);
2037 const struct GUID *invocation_id;
2038 struct ldb_context *ldb = ldb_module_get_ctx(module);
2039 struct ldb_val *new_values = NULL;
2040 unsigned int num_new_values = 0;
2041 unsigned int old_num_values = old_el?old_el->num_values:0;
2044 unix_to_nt_time(&now, t);
2046 /* check if there is nothing to replace */
2047 if ((!old_el || old_el->num_values == 0) &&
2048 el->num_values == 0) {
2052 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid, parent);
2053 if (ret != LDB_SUCCESS) {
2054 talloc_free(tmp_ctx);
2058 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid, parent);
2059 if (ret != LDB_SUCCESS) {
2060 talloc_free(tmp_ctx);
2064 invocation_id = samdb_ntds_invocation_id(ldb);
2065 if (!invocation_id) {
2066 return LDB_ERR_OPERATIONS_ERROR;
2069 ret = replmd_check_upgrade_links(old_dns, old_num_values, old_el, invocation_id);
2070 if (ret != LDB_SUCCESS) {
2071 talloc_free(tmp_ctx);
2075 /* mark all the old ones as deleted */
2076 for (i=0; i<old_num_values; i++) {
2077 struct parsed_dn *old_p = &old_dns[i];
2078 struct parsed_dn *p;
2079 uint32_t rmd_flags = dsdb_dn_rmd_flags(old_p->dsdb_dn->dn);
2081 if (rmd_flags & DSDB_RMD_FLAG_DELETED) continue;
2083 ret = replmd_add_backlink(module, schema, msg_guid, old_dns[i].guid, false, schema_attr, false);
2084 if (ret != LDB_SUCCESS) {
2085 talloc_free(tmp_ctx);
2089 p = parsed_dn_find(dns, el->num_values, old_p->guid, NULL);
2091 /* we don't delete it if we are re-adding it */
2095 ret = replmd_update_la_val(old_el->values, old_p->v, old_p->dsdb_dn, old_p->dsdb_dn,
2096 invocation_id, seq_num, seq_num, now, 0, true);
2097 if (ret != LDB_SUCCESS) {
2098 talloc_free(tmp_ctx);
2103 /* for each new value, either update its meta-data, or add it
2106 for (i=0; i<el->num_values; i++) {
2107 struct parsed_dn *p = &dns[i], *old_p;
2110 (old_p = parsed_dn_find(old_dns,
2111 old_num_values, p->guid, NULL)) != NULL) {
2112 /* update in place */
2113 ret = replmd_update_la_val(old_el->values, old_p->v, p->dsdb_dn,
2114 old_p->dsdb_dn, invocation_id,
2115 seq_num, seq_num, now, 0, false);
2116 if (ret != LDB_SUCCESS) {
2117 talloc_free(tmp_ctx);
2122 new_values = talloc_realloc(tmp_ctx, new_values, struct ldb_val,
2124 if (new_values == NULL) {
2125 ldb_module_oom(module);
2126 talloc_free(tmp_ctx);
2127 return LDB_ERR_OPERATIONS_ERROR;
2129 ret = replmd_build_la_val(new_values, &new_values[num_new_values], dns[i].dsdb_dn,
2130 invocation_id, seq_num, seq_num, now, 0, false);
2131 if (ret != LDB_SUCCESS) {
2132 talloc_free(tmp_ctx);
2138 ret = replmd_add_backlink(module, schema, msg_guid, dns[i].guid, true, schema_attr, false);
2139 if (ret != LDB_SUCCESS) {
2140 talloc_free(tmp_ctx);
2145 /* add the new values to the end of old_el */
2146 if (num_new_values != 0) {
2147 el->values = talloc_realloc(msg->elements, old_el?old_el->values:NULL,
2148 struct ldb_val, old_num_values+num_new_values);
2149 if (el->values == NULL) {
2150 ldb_module_oom(module);
2151 return LDB_ERR_OPERATIONS_ERROR;
2153 memcpy(&el->values[old_num_values], &new_values[0],
2154 sizeof(struct ldb_val)*num_new_values);
2155 el->num_values = old_num_values + num_new_values;
2156 talloc_steal(msg->elements, new_values);
2158 el->values = old_el->values;
2159 el->num_values = old_el->num_values;
2160 talloc_steal(msg->elements, el->values);
2163 talloc_free(tmp_ctx);
2165 /* we now tell the backend to replace all existing values
2166 with the one we have constructed */
2167 el->flags = LDB_FLAG_MOD_REPLACE;
2174 handle linked attributes in modify requests
2176 static int replmd_modify_handle_linked_attribs(struct ldb_module *module,
2177 struct ldb_message *msg,
2178 uint64_t seq_num, time_t t,
2179 struct ldb_request *parent)
2181 struct ldb_result *res;
2184 struct ldb_context *ldb = ldb_module_get_ctx(module);
2185 struct ldb_message *old_msg;
2187 const struct dsdb_schema *schema;
2188 struct GUID old_guid;
2191 /* there the replmd_update_rpmd code has already
2192 * checked and saw that there are no linked
2197 if (dsdb_functional_level(ldb) == DS_DOMAIN_FUNCTION_2000) {
2198 /* don't do anything special for linked attributes */
2202 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, NULL,
2203 DSDB_FLAG_NEXT_MODULE |
2204 DSDB_SEARCH_SHOW_RECYCLED |
2205 DSDB_SEARCH_REVEAL_INTERNALS |
2206 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT,
2208 if (ret != LDB_SUCCESS) {
2211 schema = dsdb_get_schema(ldb, res);
2213 return LDB_ERR_OPERATIONS_ERROR;
2216 old_msg = res->msgs[0];
2218 old_guid = samdb_result_guid(old_msg, "objectGUID");
2220 for (i=0; i<msg->num_elements; i++) {
2221 struct ldb_message_element *el = &msg->elements[i];
2222 struct ldb_message_element *old_el, *new_el;
2223 const struct dsdb_attribute *schema_attr
2224 = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
2226 ldb_asprintf_errstring(ldb,
2227 "%s: attribute %s is not a valid attribute in schema",
2228 __FUNCTION__, el->name);
2229 return LDB_ERR_OBJECT_CLASS_VIOLATION;
2231 if (schema_attr->linkID == 0) {
2234 if ((schema_attr->linkID & 1) == 1) {
2235 if (parent && ldb_request_get_control(parent, DSDB_CONTROL_DBCHECK)) {
2238 /* Odd is for the target. Illegal to modify */
2239 ldb_asprintf_errstring(ldb,
2240 "attribute %s must not be modified directly, it is a linked attribute", el->name);
2241 return LDB_ERR_UNWILLING_TO_PERFORM;
2243 old_el = ldb_msg_find_element(old_msg, el->name);
2244 switch (el->flags & LDB_FLAG_MOD_MASK) {
2245 case LDB_FLAG_MOD_REPLACE:
2246 ret = replmd_modify_la_replace(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid, parent);
2248 case LDB_FLAG_MOD_DELETE:
2249 ret = replmd_modify_la_delete(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid, parent);
2251 case LDB_FLAG_MOD_ADD:
2252 ret = replmd_modify_la_add(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid, parent);
2255 ldb_asprintf_errstring(ldb,
2256 "invalid flags 0x%x for %s linked attribute",
2257 el->flags, el->name);
2258 return LDB_ERR_UNWILLING_TO_PERFORM;
2260 if (dsdb_check_single_valued_link(schema_attr, el) != LDB_SUCCESS) {
2261 ldb_asprintf_errstring(ldb,
2262 "Attribute %s is single valued but more than one value has been supplied",
2264 return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
2266 el->flags |= LDB_FLAG_INTERNAL_DISABLE_SINGLE_VALUE_CHECK;
2271 if (ret != LDB_SUCCESS) {
2275 ldb_msg_remove_attr(old_msg, el->name);
2277 ldb_msg_add_empty(old_msg, el->name, 0, &new_el);
2278 new_el->num_values = el->num_values;
2279 new_el->values = talloc_steal(msg->elements, el->values);
2281 /* TODO: this relises a bit too heavily on the exact
2282 behaviour of ldb_msg_find_element and
2283 ldb_msg_remove_element */
2284 old_el = ldb_msg_find_element(msg, el->name);
2286 ldb_msg_remove_element(msg, old_el);
2297 static int replmd_modify(struct ldb_module *module, struct ldb_request *req)
2299 struct samldb_msds_intid_persistant *msds_intid_struct;
2300 struct ldb_context *ldb;
2301 struct replmd_replicated_request *ac;
2302 struct ldb_request *down_req;
2303 struct ldb_message *msg;
2304 time_t t = time(NULL);
2306 bool is_urgent = false, rodc = false;
2307 unsigned int functional_level;
2308 const DATA_BLOB *guid_blob;
2309 struct ldb_control *sd_propagation_control;
2311 /* do not manipulate our control entries */
2312 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2313 return ldb_next_request(module, req);
2316 sd_propagation_control = ldb_request_get_control(req,
2317 DSDB_CONTROL_SEC_DESC_PROPAGATION_OID);
2318 if (sd_propagation_control != NULL) {
2319 if (req->op.mod.message->num_elements != 1) {
2320 return ldb_module_operr(module);
2322 ret = strcmp(req->op.mod.message->elements[0].name,
2323 "nTSecurityDescriptor");
2325 return ldb_module_operr(module);
2328 return ldb_next_request(module, req);
2331 ldb = ldb_module_get_ctx(module);
2333 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_modify\n");
2335 guid_blob = ldb_msg_find_ldb_val(req->op.mod.message, "objectGUID");
2336 if ( guid_blob != NULL ) {
2337 ldb_set_errstring(ldb,
2338 "replmd_modify: it's not allowed to change the objectGUID!");
2339 return LDB_ERR_CONSTRAINT_VIOLATION;
2342 ac = replmd_ctx_init(module, req);
2344 return ldb_module_oom(module);
2347 functional_level = dsdb_functional_level(ldb);
2349 /* we have to copy the message as the caller might have it as a const */
2350 msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
2354 return LDB_ERR_OPERATIONS_ERROR;
2357 ldb_msg_remove_attr(msg, "whenChanged");
2358 ldb_msg_remove_attr(msg, "uSNChanged");
2360 ret = replmd_update_rpmd(module, ac->schema, req, NULL,
2361 msg, &ac->seq_num, t, &is_urgent, &rodc);
2362 if (rodc && (ret == LDB_ERR_REFERRAL)) {
2363 struct loadparm_context *lp_ctx;
2366 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
2367 struct loadparm_context);
2369 referral = talloc_asprintf(req,
2371 lpcfg_dnsdomain(lp_ctx),
2372 ldb_dn_get_linearized(msg->dn));
2373 ret = ldb_module_send_referral(req, referral);
2378 if (ret != LDB_SUCCESS) {
2383 ret = replmd_modify_handle_linked_attribs(module, msg, ac->seq_num, t, req);
2384 if (ret != LDB_SUCCESS) {
2390 * - replace the old object with the newly constructed one
2393 ac->is_urgent = is_urgent;
2395 ret = ldb_build_mod_req(&down_req, ldb, ac,
2398 ac, replmd_op_callback,
2400 LDB_REQ_SET_LOCATION(down_req);
2401 if (ret != LDB_SUCCESS) {
2406 /* current partition control is needed by "replmd_op_callback" */
2407 if (ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID) == NULL) {
2408 ret = ldb_request_add_control(down_req,
2409 DSDB_CONTROL_CURRENT_PARTITION_OID,
2411 if (ret != LDB_SUCCESS) {
2417 /* If we are in functional level 2000, then
2418 * replmd_modify_handle_linked_attribs will have done
2420 if (functional_level == DS_DOMAIN_FUNCTION_2000) {
2421 ret = ldb_request_add_control(down_req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
2422 if (ret != LDB_SUCCESS) {
2428 talloc_steal(down_req, msg);
2430 /* we only change whenChanged and uSNChanged if the seq_num
2432 if (ac->seq_num != 0) {
2433 ret = add_time_element(msg, "whenChanged", t);
2434 if (ret != LDB_SUCCESS) {
2440 ret = add_uint64_element(ldb, msg, "uSNChanged", ac->seq_num);
2441 if (ret != LDB_SUCCESS) {
2448 if (!ldb_dn_compare_base(ac->schema->base_dn, msg->dn)) {
2449 /* Update the usn in the SAMLDB_MSDS_INTID_OPAQUE opaque */
2450 msds_intid_struct = (struct samldb_msds_intid_persistant *) ldb_get_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE);
2451 if (msds_intid_struct) {
2452 msds_intid_struct->usn = ac->seq_num;
2456 /* go on with the call chain */
2457 return ldb_next_request(module, down_req);
2460 static int replmd_rename_callback(struct ldb_request *req, struct ldb_reply *ares);
2463 handle a rename request
2465 On a rename we need to do an extra ldb_modify which sets the
2466 whenChanged and uSNChanged attributes. We do this in a callback after the success.
2468 static int replmd_rename(struct ldb_module *module, struct ldb_request *req)
2470 struct ldb_context *ldb;
2471 struct replmd_replicated_request *ac;
2473 struct ldb_request *down_req;
2475 /* do not manipulate our control entries */
2476 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2477 return ldb_next_request(module, req);
2480 ldb = ldb_module_get_ctx(module);
2482 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_rename\n");
2484 ac = replmd_ctx_init(module, req);
2486 return ldb_module_oom(module);
2489 ret = ldb_build_rename_req(&down_req, ldb, ac,
2490 ac->req->op.rename.olddn,
2491 ac->req->op.rename.newdn,
2493 ac, replmd_rename_callback,
2495 LDB_REQ_SET_LOCATION(down_req);
2496 if (ret != LDB_SUCCESS) {
2501 /* go on with the call chain */
2502 return ldb_next_request(module, down_req);
2505 /* After the rename is compleated, update the whenchanged etc */
2506 static int replmd_rename_callback(struct ldb_request *req, struct ldb_reply *ares)
2508 struct ldb_context *ldb;
2509 struct replmd_replicated_request *ac;
2510 struct ldb_request *down_req;
2511 struct ldb_message *msg;
2512 const struct dsdb_attribute *rdn_attr;
2513 const char *rdn_name;
2514 const struct ldb_val *rdn_val;
2515 const char *attrs[5] = { NULL, };
2516 time_t t = time(NULL);
2518 bool is_urgent = false, rodc = false;
2520 ac = talloc_get_type(req->context, struct replmd_replicated_request);
2521 ldb = ldb_module_get_ctx(ac->module);
2523 if (ares->error != LDB_SUCCESS) {
2524 return ldb_module_done(ac->req, ares->controls,
2525 ares->response, ares->error);
2528 if (ares->type != LDB_REPLY_DONE) {
2529 ldb_set_errstring(ldb,
2530 "invalid ldb_reply_type in callback");
2532 return ldb_module_done(ac->req, NULL, NULL,
2533 LDB_ERR_OPERATIONS_ERROR);
2537 * - replace the old object with the newly constructed one
2540 msg = ldb_msg_new(ac);
2543 return LDB_ERR_OPERATIONS_ERROR;
2546 msg->dn = ac->req->op.rename.newdn;
2548 rdn_name = ldb_dn_get_rdn_name(msg->dn);
2549 if (rdn_name == NULL) {
2551 return ldb_module_done(ac->req, NULL, NULL,
2555 /* normalize the rdn attribute name */
2556 rdn_attr = dsdb_attribute_by_lDAPDisplayName(ac->schema, rdn_name);
2557 if (rdn_attr == NULL) {
2559 return ldb_module_done(ac->req, NULL, NULL,
2562 rdn_name = rdn_attr->lDAPDisplayName;
2564 rdn_val = ldb_dn_get_rdn_val(msg->dn);
2565 if (rdn_val == NULL) {
2567 return ldb_module_done(ac->req, NULL, NULL,
2571 if (ldb_msg_add_empty(msg, rdn_name, LDB_FLAG_MOD_REPLACE, NULL) != 0) {
2573 return ldb_module_done(ac->req, NULL, NULL,
2576 if (ldb_msg_add_value(msg, rdn_name, rdn_val, NULL) != 0) {
2578 return ldb_module_done(ac->req, NULL, NULL,
2581 if (ldb_msg_add_empty(msg, "name", LDB_FLAG_MOD_REPLACE, NULL) != 0) {
2583 return ldb_module_done(ac->req, NULL, NULL,
2586 if (ldb_msg_add_value(msg, "name", rdn_val, NULL) != 0) {
2588 return ldb_module_done(ac->req, NULL, NULL,
2593 * here we let replmd_update_rpmd() only search for
2594 * the existing "replPropertyMetaData" and rdn_name attributes.
2596 * We do not want the existing "name" attribute as
2597 * the "name" attribute needs to get the version
2598 * updated on rename even if the rdn value hasn't changed.
2600 * This is the diff of the meta data, for a moved user
2601 * on a w2k8r2 server:
2604 * -dn: CN=sdf df,CN=Users,DC=bla,DC=base
2605 * +dn: CN=sdf df,OU=TestOU,DC=bla,DC=base
2606 * replPropertyMetaData: NDR: struct replPropertyMetaDataBlob
2607 * version : 0x00000001 (1)
2608 * reserved : 0x00000000 (0)
2609 * @@ -66,11 +66,11 @@ replPropertyMetaData: NDR: struct re
2610 * local_usn : 0x00000000000037a5 (14245)
2611 * array: struct replPropertyMetaData1
2612 * attid : DRSUAPI_ATTID_name (0x90001)
2613 * - version : 0x00000001 (1)
2614 * - originating_change_time : Wed Feb 9 17:20:49 2011 CET
2615 * + version : 0x00000002 (2)
2616 * + originating_change_time : Wed Apr 6 15:21:01 2011 CEST
2617 * originating_invocation_id: 0d36ca05-5507-4e62-aca3-354bab0d39e1
2618 * - originating_usn : 0x00000000000037a5 (14245)
2619 * - local_usn : 0x00000000000037a5 (14245)
2620 * + originating_usn : 0x0000000000003834 (14388)
2621 * + local_usn : 0x0000000000003834 (14388)
2622 * array: struct replPropertyMetaData1
2623 * attid : DRSUAPI_ATTID_userAccountControl (0x90008)
2624 * version : 0x00000004 (4)
2626 attrs[0] = "replPropertyMetaData";
2627 attrs[1] = "objectClass";
2628 attrs[2] = "instanceType";
2629 attrs[3] = rdn_name;
2632 ret = replmd_update_rpmd(ac->module, ac->schema, req, attrs,
2633 msg, &ac->seq_num, t, &is_urgent, &rodc);
2634 if (rodc && (ret == LDB_ERR_REFERRAL)) {
2635 struct ldb_dn *olddn = ac->req->op.rename.olddn;
2636 struct loadparm_context *lp_ctx;
2639 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
2640 struct loadparm_context);
2642 referral = talloc_asprintf(req,
2644 lpcfg_dnsdomain(lp_ctx),
2645 ldb_dn_get_linearized(olddn));
2646 ret = ldb_module_send_referral(req, referral);
2648 return ldb_module_done(req, NULL, NULL, ret);
2651 if (ret != LDB_SUCCESS) {
2653 return ldb_module_done(ac->req, NULL, NULL, ret);
2656 if (ac->seq_num == 0) {
2658 return ldb_module_done(ac->req, NULL, NULL,
2660 "internal error seq_num == 0"));
2662 ac->is_urgent = is_urgent;
2664 ret = ldb_build_mod_req(&down_req, ldb, ac,
2667 ac, replmd_op_callback,
2669 LDB_REQ_SET_LOCATION(down_req);
2670 if (ret != LDB_SUCCESS) {
2675 /* current partition control is needed by "replmd_op_callback" */
2676 if (ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID) == NULL) {
2677 ret = ldb_request_add_control(down_req,
2678 DSDB_CONTROL_CURRENT_PARTITION_OID,
2680 if (ret != LDB_SUCCESS) {
2686 talloc_steal(down_req, msg);
2688 ret = add_time_element(msg, "whenChanged", t);
2689 if (ret != LDB_SUCCESS) {
2695 ret = add_uint64_element(ldb, msg, "uSNChanged", ac->seq_num);
2696 if (ret != LDB_SUCCESS) {
2702 /* go on with the call chain - do the modify after the rename */
2703 return ldb_next_request(ac->module, down_req);
2707 remove links from objects that point at this object when an object
2710 static int replmd_delete_remove_link(struct ldb_module *module,
2711 const struct dsdb_schema *schema,
2713 struct ldb_message_element *el,
2714 const struct dsdb_attribute *sa,
2715 struct ldb_request *parent)
2718 TALLOC_CTX *tmp_ctx = talloc_new(module);
2719 struct ldb_context *ldb = ldb_module_get_ctx(module);
2721 for (i=0; i<el->num_values; i++) {
2722 struct dsdb_dn *dsdb_dn;
2726 struct ldb_message *msg;
2727 const struct dsdb_attribute *target_attr;
2728 struct ldb_message_element *el2;
2729 struct ldb_val dn_val;
2731 if (dsdb_dn_is_deleted_val(&el->values[i])) {
2735 dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &el->values[i], sa->syntax->ldap_oid);
2737 talloc_free(tmp_ctx);
2738 return LDB_ERR_OPERATIONS_ERROR;
2741 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid2, "GUID");
2742 if (!NT_STATUS_IS_OK(status)) {
2743 talloc_free(tmp_ctx);
2744 return LDB_ERR_OPERATIONS_ERROR;
2747 /* remove the link */
2748 msg = ldb_msg_new(tmp_ctx);
2750 ldb_module_oom(module);
2751 talloc_free(tmp_ctx);
2752 return LDB_ERR_OPERATIONS_ERROR;
2756 msg->dn = dsdb_dn->dn;
2758 target_attr = dsdb_attribute_by_linkID(schema, sa->linkID ^ 1);
2759 if (target_attr == NULL) {
2763 ret = ldb_msg_add_empty(msg, target_attr->lDAPDisplayName, LDB_FLAG_MOD_DELETE, &el2);
2764 if (ret != LDB_SUCCESS) {
2765 ldb_module_oom(module);
2766 talloc_free(tmp_ctx);
2767 return LDB_ERR_OPERATIONS_ERROR;
2769 dn_val = data_blob_string_const(ldb_dn_get_linearized(dn));
2770 el2->values = &dn_val;
2771 el2->num_values = 1;
2773 ret = dsdb_module_modify(module, msg, DSDB_FLAG_OWN_MODULE, parent);
2774 if (ret != LDB_SUCCESS) {
2775 talloc_free(tmp_ctx);
2779 talloc_free(tmp_ctx);
2785 handle update of replication meta data for deletion of objects
2787 This also handles the mapping of delete to a rename operation
2788 to allow deletes to be replicated.
2790 static int replmd_delete(struct ldb_module *module, struct ldb_request *req)
2792 int ret = LDB_ERR_OTHER;
2793 bool retb, disallow_move_on_delete;
2794 struct ldb_dn *old_dn, *new_dn;
2795 const char *rdn_name;
2796 const struct ldb_val *rdn_value, *new_rdn_value;
2798 struct ldb_context *ldb = ldb_module_get_ctx(module);
2799 const struct dsdb_schema *schema;
2800 struct ldb_message *msg, *old_msg;
2801 struct ldb_message_element *el;
2802 TALLOC_CTX *tmp_ctx;
2803 struct ldb_result *res, *parent_res;
2804 const char *preserved_attrs[] = {
2805 /* yes, this really is a hard coded list. See MS-ADTS
2806 section 3.1.1.5.5.1.1 */
2807 "nTSecurityDescriptor", "attributeID", "attributeSyntax", "dNReferenceUpdate", "dNSHostName",
2808 "flatName", "governsID", "groupType", "instanceType", "lDAPDisplayName", "legacyExchangeDN",
2809 "isDeleted", "isRecycled", "lastKnownParent", "msDS-LastKnownRDN", "mS-DS-CreatorSID",
2810 "mSMQOwnerID", "nCName", "objectClass", "distinguishedName", "objectGUID", "objectSid",
2811 "oMSyntax", "proxiedObjectName", "name", "replPropertyMetaData", "sAMAccountName",
2812 "securityIdentifier", "sIDHistory", "subClassOf", "systemFlags", "trustPartner", "trustDirection",
2813 "trustType", "trustAttributes", "userAccountControl", "uSNChanged", "uSNCreated", "whenCreated",
2814 "whenChanged", NULL};
2815 unsigned int i, el_count = 0;
2816 enum deletion_state { OBJECT_NOT_DELETED=1, OBJECT_DELETED=2, OBJECT_RECYCLED=3,
2817 OBJECT_TOMBSTONE=4, OBJECT_REMOVED=5 };
2818 enum deletion_state deletion_state, next_deletion_state;
2821 if (ldb_dn_is_special(req->op.del.dn)) {
2822 return ldb_next_request(module, req);
2825 tmp_ctx = talloc_new(ldb);
2828 return LDB_ERR_OPERATIONS_ERROR;
2831 schema = dsdb_get_schema(ldb, tmp_ctx);
2833 return LDB_ERR_OPERATIONS_ERROR;
2836 old_dn = ldb_dn_copy(tmp_ctx, req->op.del.dn);
2838 /* we need the complete msg off disk, so we can work out which
2839 attributes need to be removed */
2840 ret = dsdb_module_search_dn(module, tmp_ctx, &res, old_dn, NULL,
2841 DSDB_FLAG_NEXT_MODULE |
2842 DSDB_SEARCH_SHOW_RECYCLED |
2843 DSDB_SEARCH_REVEAL_INTERNALS |
2844 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT, req);
2845 if (ret != LDB_SUCCESS) {
2846 talloc_free(tmp_ctx);
2849 old_msg = res->msgs[0];
2852 ret = dsdb_recyclebin_enabled(module, &enabled);
2853 if (ret != LDB_SUCCESS) {
2854 talloc_free(tmp_ctx);
2858 if (ldb_msg_check_string_attribute(old_msg, "isDeleted", "TRUE")) {
2860 deletion_state = OBJECT_TOMBSTONE;
2861 next_deletion_state = OBJECT_REMOVED;
2862 } else if (ldb_msg_check_string_attribute(old_msg, "isRecycled", "TRUE")) {
2863 deletion_state = OBJECT_RECYCLED;
2864 next_deletion_state = OBJECT_REMOVED;
2866 deletion_state = OBJECT_DELETED;
2867 next_deletion_state = OBJECT_RECYCLED;
2870 deletion_state = OBJECT_NOT_DELETED;
2872 next_deletion_state = OBJECT_DELETED;
2874 next_deletion_state = OBJECT_TOMBSTONE;
2878 if (next_deletion_state == OBJECT_REMOVED) {
2879 struct auth_session_info *session_info =
2880 (struct auth_session_info *)ldb_get_opaque(ldb, "sessionInfo");
2881 if (security_session_user_level(session_info, NULL) != SECURITY_SYSTEM) {
2882 ldb_asprintf_errstring(ldb, "Refusing to delete deleted object %s",
2883 ldb_dn_get_linearized(old_msg->dn));
2884 return LDB_ERR_UNWILLING_TO_PERFORM;
2887 /* it is already deleted - really remove it this time */
2888 talloc_free(tmp_ctx);
2889 return ldb_next_request(module, req);
2892 rdn_name = ldb_dn_get_rdn_name(old_dn);
2893 rdn_value = ldb_dn_get_rdn_val(old_dn);
2894 if ((rdn_name == NULL) || (rdn_value == NULL)) {
2895 talloc_free(tmp_ctx);
2896 return ldb_operr(ldb);
2899 msg = ldb_msg_new(tmp_ctx);
2901 ldb_module_oom(module);
2902 talloc_free(tmp_ctx);
2903 return LDB_ERR_OPERATIONS_ERROR;
2908 if (deletion_state == OBJECT_NOT_DELETED){
2909 /* consider the SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE flag */
2910 disallow_move_on_delete =
2911 (ldb_msg_find_attr_as_int(old_msg, "systemFlags", 0)
2912 & SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE);
2914 /* work out where we will be renaming this object to */
2915 if (!disallow_move_on_delete) {
2916 ret = dsdb_get_deleted_objects_dn(ldb, tmp_ctx, old_dn,
2918 if (ret != LDB_SUCCESS) {
2919 /* this is probably an attempted delete on a partition
2920 * that doesn't allow delete operations, such as the
2921 * schema partition */
2922 ldb_asprintf_errstring(ldb, "No Deleted Objects container for DN %s",
2923 ldb_dn_get_linearized(old_dn));
2924 talloc_free(tmp_ctx);
2925 return LDB_ERR_UNWILLING_TO_PERFORM;
2928 new_dn = ldb_dn_get_parent(tmp_ctx, old_dn);
2929 if (new_dn == NULL) {
2930 ldb_module_oom(module);
2931 talloc_free(tmp_ctx);
2932 return LDB_ERR_OPERATIONS_ERROR;
2936 /* get the objects GUID from the search we just did */
2937 guid = samdb_result_guid(old_msg, "objectGUID");
2939 /* Add a formatted child */
2940 retb = ldb_dn_add_child_fmt(new_dn, "%s=%s\\0ADEL:%s",
2942 ldb_dn_escape_value(tmp_ctx, *rdn_value),
2943 GUID_string(tmp_ctx, &guid));
2945 DEBUG(0,(__location__ ": Unable to add a formatted child to dn: %s",
2946 ldb_dn_get_linearized(new_dn)));
2947 talloc_free(tmp_ctx);
2948 return LDB_ERR_OPERATIONS_ERROR;
2951 ret = ldb_msg_add_string(msg, "isDeleted", "TRUE");
2952 if (ret != LDB_SUCCESS) {
2953 DEBUG(0,(__location__ ": Failed to add isDeleted string to the msg\n"));
2954 ldb_module_oom(module);
2955 talloc_free(tmp_ctx);
2958 msg->elements[el_count++].flags = LDB_FLAG_MOD_REPLACE;
2962 now we need to modify the object in the following ways:
2964 - add isDeleted=TRUE
2965 - update rDN and name, with new rDN
2966 - remove linked attributes
2967 - remove objectCategory and sAMAccountType
2968 - remove attribs not on the preserved list
2969 - preserved if in above list, or is rDN
2970 - remove all linked attribs from this object
2971 - remove all links from other objects to this object
2972 - add lastKnownParent
2973 - update replPropertyMetaData?
2975 see MS-ADTS "Tombstone Requirements" section 3.1.1.5.5.1.1
2978 /* we need the storage form of the parent GUID */
2979 ret = dsdb_module_search_dn(module, tmp_ctx, &parent_res,
2980 ldb_dn_get_parent(tmp_ctx, old_dn), NULL,
2981 DSDB_FLAG_NEXT_MODULE |
2982 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
2983 DSDB_SEARCH_REVEAL_INTERNALS|
2984 DSDB_SEARCH_SHOW_RECYCLED, req);
2985 if (ret != LDB_SUCCESS) {
2986 talloc_free(tmp_ctx);
2990 if (deletion_state == OBJECT_NOT_DELETED){
2991 ret = ldb_msg_add_steal_string(msg, "lastKnownParent",
2992 ldb_dn_get_extended_linearized(tmp_ctx, parent_res->msgs[0]->dn, 1));
2993 if (ret != LDB_SUCCESS) {
2994 DEBUG(0,(__location__ ": Failed to add lastKnownParent string to the msg\n"));
2995 ldb_module_oom(module);
2996 talloc_free(tmp_ctx);
2999 msg->elements[el_count++].flags = LDB_FLAG_MOD_REPLACE;
3002 switch (next_deletion_state){
3004 case OBJECT_DELETED:
3006 ret = ldb_msg_add_value(msg, "msDS-LastKnownRDN", rdn_value, NULL);
3007 if (ret != LDB_SUCCESS) {
3008 DEBUG(0,(__location__ ": Failed to add msDS-LastKnownRDN string to the msg\n"));
3009 ldb_module_oom(module);
3010 talloc_free(tmp_ctx);
3013 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
3015 ret = ldb_msg_add_empty(msg, "objectCategory", LDB_FLAG_MOD_REPLACE, NULL);
3016 if (ret != LDB_SUCCESS) {
3017 talloc_free(tmp_ctx);
3018 ldb_module_oom(module);
3022 ret = ldb_msg_add_empty(msg, "sAMAccountType", LDB_FLAG_MOD_REPLACE, NULL);
3023 if (ret != LDB_SUCCESS) {
3024 talloc_free(tmp_ctx);
3025 ldb_module_oom(module);
3031 case OBJECT_RECYCLED:
3032 case OBJECT_TOMBSTONE:
3035 * we also mark it as recycled, meaning this object can't be
3036 * recovered (we are stripping its attributes).
3037 * This is done only if we have this schema object of course ...
3038 * This behavior is identical to the one of Windows 2008R2 which
3039 * always set the isRecycled attribute, even if the recycle-bin is
3040 * not activated and what ever the forest level is.
3042 if (dsdb_attribute_by_lDAPDisplayName(schema, "isRecycled") != NULL) {
3043 ret = ldb_msg_add_string(msg, "isRecycled", "TRUE");
3044 if (ret != LDB_SUCCESS) {
3045 DEBUG(0,(__location__ ": Failed to add isRecycled string to the msg\n"));
3046 ldb_module_oom(module);
3047 talloc_free(tmp_ctx);
3050 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
3053 /* work out which of the old attributes we will be removing */
3054 for (i=0; i<old_msg->num_elements; i++) {
3055 const struct dsdb_attribute *sa;
3056 el = &old_msg->elements[i];
3057 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
3059 talloc_free(tmp_ctx);
3060 return LDB_ERR_OPERATIONS_ERROR;
3062 if (ldb_attr_cmp(el->name, rdn_name) == 0) {
3063 /* don't remove the rDN */
3066 if (sa->linkID && (sa->linkID & 1)) {
3068 we have a backlink in this object
3069 that needs to be removed. We're not
3070 allowed to remove it directly
3071 however, so we instead setup a
3072 modify to delete the corresponding
3075 ret = replmd_delete_remove_link(module, schema, old_dn, el, sa, req);
3076 if (ret != LDB_SUCCESS) {
3077 talloc_free(tmp_ctx);
3078 return LDB_ERR_OPERATIONS_ERROR;
3080 /* now we continue, which means we
3081 won't remove this backlink
3086 if (!sa->linkID && ldb_attr_in_list(preserved_attrs, el->name)) {
3089 ret = ldb_msg_add_empty(msg, el->name, LDB_FLAG_MOD_DELETE, &el);
3090 if (ret != LDB_SUCCESS) {
3091 talloc_free(tmp_ctx);
3092 ldb_module_oom(module);
3102 if (deletion_state == OBJECT_NOT_DELETED) {
3103 const struct dsdb_attribute *sa;
3105 /* work out what the new rdn value is, for updating the
3106 rDN and name fields */
3107 new_rdn_value = ldb_dn_get_rdn_val(new_dn);
3108 if (new_rdn_value == NULL) {
3109 talloc_free(tmp_ctx);
3110 return ldb_operr(ldb);
3113 sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
3115 talloc_free(tmp_ctx);
3116 return LDB_ERR_OPERATIONS_ERROR;
3119 ret = ldb_msg_add_value(msg, sa->lDAPDisplayName, new_rdn_value,
3121 if (ret != LDB_SUCCESS) {
3122 talloc_free(tmp_ctx);
3125 el->flags = LDB_FLAG_MOD_REPLACE;
3127 el = ldb_msg_find_element(old_msg, "name");
3129 ret = ldb_msg_add_value(msg, "name", new_rdn_value, &el);
3130 if (ret != LDB_SUCCESS) {
3131 talloc_free(tmp_ctx);
3134 el->flags = LDB_FLAG_MOD_REPLACE;
3138 ret = dsdb_module_modify(module, msg, DSDB_FLAG_OWN_MODULE, req);
3139 if (ret != LDB_SUCCESS) {
3140 ldb_asprintf_errstring(ldb, "replmd_delete: Failed to modify object %s in delete - %s",
3141 ldb_dn_get_linearized(old_dn), ldb_errstring(ldb));
3142 talloc_free(tmp_ctx);
3146 if (deletion_state == OBJECT_NOT_DELETED) {
3147 /* now rename onto the new DN */
3148 ret = dsdb_module_rename(module, old_dn, new_dn, DSDB_FLAG_NEXT_MODULE, req);
3149 if (ret != LDB_SUCCESS){
3150 DEBUG(0,(__location__ ": Failed to rename object from '%s' to '%s' - %s\n",
3151 ldb_dn_get_linearized(old_dn),
3152 ldb_dn_get_linearized(new_dn),
3153 ldb_errstring(ldb)));
3154 talloc_free(tmp_ctx);
3159 talloc_free(tmp_ctx);
3161 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
3166 static int replmd_replicated_request_error(struct replmd_replicated_request *ar, int ret)
3171 static int replmd_replicated_request_werror(struct replmd_replicated_request *ar, WERROR status)
3173 int ret = LDB_ERR_OTHER;
3174 /* TODO: do some error mapping */
3179 static struct replPropertyMetaData1 *
3180 replmd_replPropertyMetaData1_find_attid(struct replPropertyMetaDataBlob *md_blob,
3181 enum drsuapi_DsAttributeId attid)
3184 struct replPropertyMetaDataCtr1 *rpmd_ctr = &md_blob->ctr.ctr1;
3186 for (i = 0; i < rpmd_ctr->count; i++) {
3187 if (rpmd_ctr->array[i].attid == attid) {
3188 return &rpmd_ctr->array[i];
3196 return true if an update is newer than an existing entry
3197 see section 5.11 of MS-ADTS
3199 static bool replmd_update_is_newer(const struct GUID *current_invocation_id,
3200 const struct GUID *update_invocation_id,
3201 uint32_t current_version,
3202 uint32_t update_version,
3203 NTTIME current_change_time,
3204 NTTIME update_change_time)
3206 if (update_version != current_version) {
3207 return update_version > current_version;
3209 if (update_change_time != current_change_time) {
3210 return update_change_time > current_change_time;
3212 return GUID_compare(update_invocation_id, current_invocation_id) > 0;
3215 static bool replmd_replPropertyMetaData1_is_newer(struct replPropertyMetaData1 *cur_m,
3216 struct replPropertyMetaData1 *new_m)
3218 return replmd_update_is_newer(&cur_m->originating_invocation_id,
3219 &new_m->originating_invocation_id,
3222 cur_m->originating_change_time,
3223 new_m->originating_change_time);
3230 static struct ldb_dn *replmd_conflict_dn(TALLOC_CTX *mem_ctx, struct ldb_dn *dn, struct GUID *guid)
3232 const struct ldb_val *rdn_val;
3233 const char *rdn_name;
3234 struct ldb_dn *new_dn;
3236 rdn_val = ldb_dn_get_rdn_val(dn);
3237 rdn_name = ldb_dn_get_rdn_name(dn);
3238 if (!rdn_val || !rdn_name) {
3242 new_dn = ldb_dn_copy(mem_ctx, dn);
3247 if (!ldb_dn_remove_child_components(new_dn, 1)) {
3251 if (!ldb_dn_add_child_fmt(new_dn, "%s=%s\\0ACNF:%s",
3253 ldb_dn_escape_value(new_dn, *rdn_val),
3254 GUID_string(new_dn, guid))) {
3263 perform a modify operation which sets the rDN and name attributes to
3264 their current values. This has the effect of changing these
3265 attributes to have been last updated by the current DC. This is
3266 needed to ensure that renames performed as part of conflict
3267 resolution are propogated to other DCs
3269 static int replmd_name_modify(struct replmd_replicated_request *ar,
3270 struct ldb_request *req, struct ldb_dn *dn)
3272 struct ldb_message *msg;
3273 const char *rdn_name;
3274 const struct ldb_val *rdn_val;
3275 const struct dsdb_attribute *rdn_attr;
3278 msg = ldb_msg_new(req);
3284 rdn_name = ldb_dn_get_rdn_name(dn);
3285 if (rdn_name == NULL) {
3289 /* normalize the rdn attribute name */
3290 rdn_attr = dsdb_attribute_by_lDAPDisplayName(ar->schema, rdn_name);
3291 if (rdn_attr == NULL) {
3294 rdn_name = rdn_attr->lDAPDisplayName;
3296 rdn_val = ldb_dn_get_rdn_val(dn);
3297 if (rdn_val == NULL) {
3301 if (ldb_msg_add_empty(msg, rdn_name, LDB_FLAG_MOD_REPLACE, NULL) != 0) {
3304 if (ldb_msg_add_value(msg, rdn_name, rdn_val, NULL) != 0) {
3307 if (ldb_msg_add_empty(msg, "name", LDB_FLAG_MOD_REPLACE, NULL) != 0) {
3310 if (ldb_msg_add_value(msg, "name", rdn_val, NULL) != 0) {
3314 ret = dsdb_module_modify(ar->module, msg, DSDB_FLAG_OWN_MODULE, req);
3315 if (ret != LDB_SUCCESS) {
3316 DEBUG(0,(__location__ ": Failed to modify rDN/name of conflict DN '%s' - %s",
3317 ldb_dn_get_linearized(dn),
3318 ldb_errstring(ldb_module_get_ctx(ar->module))));
3328 DEBUG(0,(__location__ ": Failed to setup modify rDN/name of conflict DN '%s'",
3329 ldb_dn_get_linearized(dn)));
3330 return LDB_ERR_OPERATIONS_ERROR;
3335 callback for conflict DN handling where we have renamed the incoming
3336 record. After renaming it, we need to ensure the change of name and
3337 rDN for the incoming record is seen as an originating update by this DC.
3339 This also handles updating lastKnownParent for entries sent to lostAndFound
3341 static int replmd_op_name_modify_callback(struct ldb_request *req, struct ldb_reply *ares)
3343 struct replmd_replicated_request *ar =
3344 talloc_get_type_abort(req->context, struct replmd_replicated_request);
3345 struct ldb_dn *conflict_dn;
3348 if (ares->error != LDB_SUCCESS) {
3349 /* call the normal callback for everything except success */
3350 return replmd_op_callback(req, ares);
3353 switch (req->operation) {
3355 conflict_dn = req->op.add.message->dn;
3358 conflict_dn = req->op.mod.message->dn;
3361 smb_panic("replmd_op_name_modify_callback called in unknown circumstances");
3364 /* perform a modify of the rDN and name of the record */
3365 ret = replmd_name_modify(ar, req, conflict_dn);
3366 if (ret != LDB_SUCCESS) {
3368 return replmd_op_callback(req, ares);
3371 if (ar->objs->objects[ar->index_current].last_known_parent) {
3372 struct ldb_message *msg = ldb_msg_new(req);
3374 ldb_module_oom(ar->module);
3375 return LDB_ERR_OPERATIONS_ERROR;
3378 msg->dn = req->op.add.message->dn;
3380 ret = ldb_msg_add_steal_string(msg, "lastKnownParent",
3381 ldb_dn_get_extended_linearized(msg, ar->objs->objects[ar->index_current].last_known_parent, 1));
3382 if (ret != LDB_SUCCESS) {
3383 DEBUG(0,(__location__ ": Failed to add lastKnownParent string to the msg\n"));
3384 ldb_module_oom(ar->module);
3387 msg->elements[0].flags = LDB_FLAG_MOD_REPLACE;
3389 ret = dsdb_module_modify(ar->module, msg, DSDB_FLAG_OWN_MODULE, req);
3390 if (ret != LDB_SUCCESS) {
3391 DEBUG(0,(__location__ ": Failed to modify lastKnownParent of lostAndFound DN '%s' - %s",
3392 ldb_dn_get_linearized(msg->dn),
3393 ldb_errstring(ldb_module_get_ctx(ar->module))));
3399 return replmd_op_callback(req, ares);
3403 callback for replmd_replicated_apply_add() and replmd_replicated_handle_rename()
3404 This copes with the creation of conflict records in the case where
3405 the DN exists, but with a different objectGUID
3407 static int replmd_op_possible_conflict_callback(struct ldb_request *req, struct ldb_reply *ares, int (*callback)(struct ldb_request *req, struct ldb_reply *ares))
3409 struct ldb_dn *conflict_dn;
3410 struct replmd_replicated_request *ar =
3411 talloc_get_type_abort(req->context, struct replmd_replicated_request);
3412 struct ldb_result *res;
3413 const char *attrs[] = { "replPropertyMetaData", "objectGUID", NULL };
3415 const struct ldb_val *omd_value;
3416 struct replPropertyMetaDataBlob omd, *rmd;
3417 enum ndr_err_code ndr_err;
3418 bool rename_incoming_record, rodc;
3419 struct replPropertyMetaData1 *rmd_name, *omd_name;
3420 struct ldb_message *msg;
3422 req->callback = callback;
3424 if (ares->error != LDB_ERR_ENTRY_ALREADY_EXISTS) {
3425 /* call the normal callback for everything except
3427 return ldb_module_done(req, ares->controls, ares->response, ares->error);
3430 ret = samdb_rodc(ldb_module_get_ctx(ar->module), &rodc);
3431 if (ret != LDB_SUCCESS) {
3432 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module), "Failed to determine if we are an RODC when attempting to form conflict DN: %s", ldb_errstring(ldb_module_get_ctx(ar->module)));
3433 return ldb_module_done(req, ares->controls, ares->response, LDB_ERR_OPERATIONS_ERROR);
3436 * we have a conflict, and need to decide if we will keep the
3437 * new record or the old record
3440 msg = ar->objs->objects[ar->index_current].msg;
3442 switch (req->operation) {
3444 conflict_dn = msg->dn;
3447 conflict_dn = req->op.rename.newdn;
3450 return ldb_module_done(req, ares->controls, ares->response, ldb_module_operr(ar->module));
3455 * We are on an RODC, or were a GC for this
3456 * partition, so we have to fail this until
3457 * someone who owns the partition sorts it
3460 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module),
3461 "Conflict adding object '%s' from incoming replication as we are read only for the partition. \n"
3462 " - We must fail the operation until a master for this partition resolves the conflict",
3463 ldb_dn_get_linearized(conflict_dn));
3468 * first we need the replPropertyMetaData attribute from the
3471 ret = dsdb_module_search_dn(ar->module, req, &res, conflict_dn,
3473 DSDB_FLAG_NEXT_MODULE |
3474 DSDB_SEARCH_SHOW_DELETED |
3475 DSDB_SEARCH_SHOW_RECYCLED, req);
3476 if (ret != LDB_SUCCESS) {
3477 DEBUG(0,(__location__ ": Unable to find object for conflicting record '%s'\n",
3478 ldb_dn_get_linearized(conflict_dn)));
3482 omd_value = ldb_msg_find_ldb_val(res->msgs[0], "replPropertyMetaData");
3483 if (omd_value == NULL) {
3484 DEBUG(0,(__location__ ": Unable to find replPropertyMetaData for conflicting record '%s'\n",
3485 ldb_dn_get_linearized(conflict_dn)));
3489 ndr_err = ndr_pull_struct_blob(omd_value, res->msgs[0], &omd,
3490 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
3491 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3492 DEBUG(0,(__location__ ": Failed to parse old replPropertyMetaData for %s\n",
3493 ldb_dn_get_linearized(conflict_dn)));
3497 rmd = ar->objs->objects[ar->index_current].meta_data;
3499 /* we decide which is newer based on the RPMD on the name
3500 attribute. See [MS-DRSR] ResolveNameConflict */
3501 rmd_name = replmd_replPropertyMetaData1_find_attid(rmd, DRSUAPI_ATTID_name);
3502 omd_name = replmd_replPropertyMetaData1_find_attid(&omd, DRSUAPI_ATTID_name);
3503 if (!rmd_name || !omd_name) {
3504 DEBUG(0,(__location__ ": Failed to find name attribute in replPropertyMetaData for %s\n",
3505 ldb_dn_get_linearized(conflict_dn)));
3509 rename_incoming_record = !(ar->objs->dsdb_repl_flags & DSDB_REPL_FLAG_PRIORITISE_INCOMING) &&
3510 !replmd_replPropertyMetaData1_is_newer(omd_name, rmd_name);
3512 if (rename_incoming_record) {
3514 struct ldb_dn *new_dn;
3515 struct ldb_message *new_msg;
3518 * We want to run the original callback here, which
3519 * will return LDB_ERR_ENTRY_ALREADY_EXISTS to the
3520 * caller, which will in turn know to rename the
3521 * incoming record. The error string is set in case
3522 * this isn't handled properly at some point in the
3525 if (req->operation == LDB_RENAME) {
3526 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module),
3527 "Unable to handle incoming renames where this would "
3528 "create a conflict. Incoming record is %s (caller to handle)\n",
3529 ldb_dn_get_extended_linearized(req, conflict_dn, 1));
3534 guid = samdb_result_guid(msg, "objectGUID");
3535 if (GUID_all_zero(&guid)) {
3536 DEBUG(0,(__location__ ": Failed to find objectGUID for conflicting incoming record %s\n",
3537 ldb_dn_get_linearized(conflict_dn)));
3540 new_dn = replmd_conflict_dn(req, conflict_dn, &guid);
3541 if (new_dn == NULL) {
3542 DEBUG(0,(__location__ ": Failed to form conflict DN for %s\n",
3543 ldb_dn_get_linearized(conflict_dn)));
3547 DEBUG(1,(__location__ ": Resolving conflict record via incoming rename '%s' -> '%s'\n",
3548 ldb_dn_get_linearized(conflict_dn), ldb_dn_get_linearized(new_dn)));
3550 /* re-submit the request, but with a different
3551 callback, so we don't loop forever. */
3552 new_msg = ldb_msg_copy_shallow(req, msg);
3555 DEBUG(0,(__location__ ": Failed to copy conflict DN message for %s\n",
3556 ldb_dn_get_linearized(conflict_dn)));
3558 new_msg->dn = new_dn;
3559 req->op.add.message = new_msg;
3560 req->callback = replmd_op_name_modify_callback;
3562 return ldb_next_request(ar->module, req);
3564 /* we are renaming the existing record */
3566 struct ldb_dn *new_dn;
3568 guid = samdb_result_guid(res->msgs[0], "objectGUID");
3569 if (GUID_all_zero(&guid)) {
3570 DEBUG(0,(__location__ ": Failed to find objectGUID for existing conflict record %s\n",
3571 ldb_dn_get_linearized(conflict_dn)));
3575 new_dn = replmd_conflict_dn(req, conflict_dn, &guid);
3576 if (new_dn == NULL) {
3577 DEBUG(0,(__location__ ": Failed to form conflict DN for %s\n",
3578 ldb_dn_get_linearized(conflict_dn)));
3582 DEBUG(1,(__location__ ": Resolving conflict record via existing rename '%s' -> '%s'\n",
3583 ldb_dn_get_linearized(conflict_dn), ldb_dn_get_linearized(new_dn)));
3585 ret = dsdb_module_rename(ar->module, conflict_dn, new_dn,
3586 DSDB_FLAG_OWN_MODULE, req);
3587 if (ret != LDB_SUCCESS) {
3588 DEBUG(0,(__location__ ": Failed to rename conflict dn '%s' to '%s' - %s\n",
3589 ldb_dn_get_linearized(conflict_dn),
3590 ldb_dn_get_linearized(new_dn),
3591 ldb_errstring(ldb_module_get_ctx(ar->module))));
3596 * now we need to ensure that the rename is seen as an
3597 * originating update. We do that with a modify.
3599 ret = replmd_name_modify(ar, req, new_dn);
3600 if (ret != LDB_SUCCESS) {
3604 return ldb_next_request(ar->module, req);
3608 /* on failure do the original callback. This means replication
3609 * will stop with an error, but there is not much else we can
3612 return ldb_module_done(req, ares->controls, ares->response, ares->error);
3616 callback for replmd_replicated_apply_add()
3617 This copes with the creation of conflict records in the case where
3618 the DN exists, but with a different objectGUID
3620 static int replmd_op_add_callback(struct ldb_request *req, struct ldb_reply *ares)
3622 struct replmd_replicated_request *ar =
3623 talloc_get_type_abort(req->context, struct replmd_replicated_request);
3625 if (ar->objs->objects[ar->index_current].last_known_parent) {
3626 /* This is like a conflict DN, where we put the object in LostAndFound
3627 see MS-DRSR 4.1.10.6.10 FindBestParentObject */
3628 return replmd_op_possible_conflict_callback(req, ares, replmd_op_name_modify_callback);
3631 return replmd_op_possible_conflict_callback(req, ares, replmd_op_callback);
3635 callback for replmd_replicated_handle_rename()
3636 This copes with the creation of conflict records in the case where
3637 the DN exists, but with a different objectGUID
3639 static int replmd_op_rename_callback(struct ldb_request *req, struct ldb_reply *ares)
3641 return replmd_op_possible_conflict_callback(req, ares, ldb_modify_default_callback);
3645 this is called when a new object comes in over DRS
3647 static int replmd_replicated_apply_add(struct replmd_replicated_request *ar)
3649 struct ldb_context *ldb;
3650 struct ldb_request *change_req;
3651 enum ndr_err_code ndr_err;
3652 struct ldb_message *msg;
3653 struct replPropertyMetaDataBlob *md;
3654 struct ldb_val md_value;
3657 bool remote_isDeleted = false;
3660 * TODO: check if the parent object exist
3664 * TODO: handle the conflict case where an object with the
3668 ldb = ldb_module_get_ctx(ar->module);
3669 msg = ar->objs->objects[ar->index_current].msg;
3670 md = ar->objs->objects[ar->index_current].meta_data;
3672 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ar->seq_num);
3673 if (ret != LDB_SUCCESS) {
3674 return replmd_replicated_request_error(ar, ret);
3677 ret = ldb_msg_add_value(msg, "objectGUID", &ar->objs->objects[ar->index_current].guid_value, NULL);
3678 if (ret != LDB_SUCCESS) {
3679 return replmd_replicated_request_error(ar, ret);
3682 ret = ldb_msg_add_string(msg, "whenChanged", ar->objs->objects[ar->index_current].when_changed);
3683 if (ret != LDB_SUCCESS) {
3684 return replmd_replicated_request_error(ar, ret);
3687 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNCreated", ar->seq_num);
3688 if (ret != LDB_SUCCESS) {
3689 return replmd_replicated_request_error(ar, ret);
3692 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ar->seq_num);
3693 if (ret != LDB_SUCCESS) {
3694 return replmd_replicated_request_error(ar, ret);
3697 /* remove any message elements that have zero values */
3698 for (i=0; i<msg->num_elements; i++) {
3699 struct ldb_message_element *el = &msg->elements[i];
3701 if (el->num_values == 0) {
3702 DEBUG(4,(__location__ ": Removing attribute %s with num_values==0\n",
3704 memmove(el, el+1, sizeof(*el)*(msg->num_elements - (i+1)));
3705 msg->num_elements--;
3711 remote_isDeleted = ldb_msg_find_attr_as_bool(msg,
3712 "isDeleted", false);
3715 * the meta data array is already sorted by the caller
3717 for (i=0; i < md->ctr.ctr1.count; i++) {
3718 md->ctr.ctr1.array[i].local_usn = ar->seq_num;
3720 ndr_err = ndr_push_struct_blob(&md_value, msg, md,
3721 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
3722 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3723 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3724 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3726 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &md_value, NULL);
3727 if (ret != LDB_SUCCESS) {
3728 return replmd_replicated_request_error(ar, ret);
3731 replmd_ldb_message_sort(msg, ar->schema);
3733 if (!remote_isDeleted) {
3734 ret = dsdb_module_schedule_sd_propagation(ar->module,
3736 if (ret != LDB_SUCCESS) {
3737 return replmd_replicated_request_error(ar, ret);
3742 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_ADD, msg);
3743 DEBUG(4, ("DRS replication add message:\n%s\n", s));
3747 ret = ldb_build_add_req(&change_req,
3753 replmd_op_add_callback,
3755 LDB_REQ_SET_LOCATION(change_req);
3756 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3758 /* current partition control needed by "repmd_op_callback" */
3759 ret = ldb_request_add_control(change_req,
3760 DSDB_CONTROL_CURRENT_PARTITION_OID,
3762 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3764 if (ar->objs->dsdb_repl_flags & DSDB_REPL_FLAG_PARTIAL_REPLICA) {
3765 /* this tells the partition module to make it a
3766 partial replica if creating an NC */
3767 ret = ldb_request_add_control(change_req,
3768 DSDB_CONTROL_PARTIAL_REPLICA,
3770 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3773 return ldb_next_request(ar->module, change_req);
3776 static int replmd_replicated_apply_search_for_parent_callback(struct ldb_request *req,
3777 struct ldb_reply *ares)
3779 struct replmd_replicated_request *ar = talloc_get_type(req->context,
3780 struct replmd_replicated_request);
3784 return ldb_module_done(ar->req, NULL, NULL,
3785 LDB_ERR_OPERATIONS_ERROR);
3787 if (ares->error != LDB_SUCCESS &&
3788 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
3789 return ldb_module_done(ar->req, ares->controls,
3790 ares->response, ares->error);
3793 switch (ares->type) {
3794 case LDB_REPLY_ENTRY:
3796 struct ldb_message *parent_msg = ares->message;
3797 struct ldb_message *msg = ar->objs->objects[ar->index_current].msg;
3798 struct ldb_dn *parent_dn;
3801 if (!ldb_msg_check_string_attribute(msg, "isDeleted", "TRUE")
3802 && ldb_msg_check_string_attribute(parent_msg, "isDeleted", "TRUE")) {
3803 /* Per MS-DRSR 4.1.10.6.10
3804 * FindBestParentObject we need to move this
3805 * new object under a deleted object to
3807 struct ldb_dn *nc_root;
3809 ret = dsdb_find_nc_root(ldb_module_get_ctx(ar->module), msg, msg->dn, &nc_root);
3810 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
3811 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module),
3812 "No suitable NC root found for %s. "
3813 "We need to move this object because parent object %s "
3814 "is deleted, but this object is not.",
3815 ldb_dn_get_linearized(msg->dn),
3816 ldb_dn_get_linearized(parent_msg->dn));
3817 return ldb_module_done(ar->req, NULL, NULL, LDB_ERR_OPERATIONS_ERROR);
3818 } else if (ret != LDB_SUCCESS) {
3819 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module),
3820 "Unable to find NC root for %s: %s. "
3821 "We need to move this object because parent object %s "
3822 "is deleted, but this object is not.",
3823 ldb_dn_get_linearized(msg->dn),
3824 ldb_errstring(ldb_module_get_ctx(ar->module)),
3825 ldb_dn_get_linearized(parent_msg->dn));
3826 return ldb_module_done(ar->req, NULL, NULL, LDB_ERR_OPERATIONS_ERROR);
3829 ret = dsdb_wellknown_dn(ldb_module_get_ctx(ar->module), msg,
3831 DS_GUID_LOSTANDFOUND_CONTAINER,
3833 if (ret != LDB_SUCCESS) {
3834 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module),
3835 "Unable to find LostAndFound Container for %s "
3836 "in partition %s: %s. "
3837 "We need to move this object because parent object %s "
3838 "is deleted, but this object is not.",
3839 ldb_dn_get_linearized(msg->dn), ldb_dn_get_linearized(nc_root),
3840 ldb_errstring(ldb_module_get_ctx(ar->module)),
3841 ldb_dn_get_linearized(parent_msg->dn));
3842 return ldb_module_done(ar->req, NULL, NULL, LDB_ERR_OPERATIONS_ERROR);
3844 ar->objs->objects[ar->index_current].last_known_parent
3845 = talloc_steal(ar->objs->objects[ar->index_current].msg, parent_msg->dn);
3847 parent_dn = parent_msg->dn;
3850 comp_num = ldb_dn_get_comp_num(msg->dn);
3852 if (!ldb_dn_remove_base_components(msg->dn, comp_num - 1)) {
3854 return ldb_module_done(ar->req, NULL, NULL, ldb_module_operr(ar->module));
3857 if (!ldb_dn_add_base(msg->dn, parent_dn)) {
3859 return ldb_module_done(ar->req, NULL, NULL, ldb_module_operr(ar->module));
3863 case LDB_REPLY_REFERRAL:
3864 /* we ignore referrals */
3867 case LDB_REPLY_DONE:
3868 ret = replmd_replicated_apply_add(ar);
3869 if (ret != LDB_SUCCESS) {
3870 return ldb_module_done(ar->req, NULL, NULL, ret);
3879 * Look for the parent object, so we put the new object in the right place
3882 static int replmd_replicated_apply_search_for_parent(struct replmd_replicated_request *ar)
3884 struct ldb_context *ldb;
3888 struct ldb_request *search_req;
3889 static const char *attrs[] = {"isDeleted", NULL};
3891 ldb = ldb_module_get_ctx(ar->module);
3893 if (!ar->objs->objects[ar->index_current].parent_guid_value.data) {
3894 return replmd_replicated_apply_add(ar);
3897 tmp_str = ldb_binary_encode(ar, ar->objs->objects[ar->index_current].parent_guid_value);
3898 if (!tmp_str) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3900 filter = talloc_asprintf(ar, "(objectGUID=%s)", tmp_str);
3901 if (!filter) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3902 talloc_free(tmp_str);
3904 ret = ldb_build_search_req(&search_req,
3907 ar->objs->partition_dn,
3913 replmd_replicated_apply_search_for_parent_callback,
3915 LDB_REQ_SET_LOCATION(search_req);
3917 ret = dsdb_request_add_controls(search_req,
3918 DSDB_SEARCH_SHOW_RECYCLED|
3919 DSDB_SEARCH_SHOW_DELETED|
3920 DSDB_SEARCH_SHOW_EXTENDED_DN);
3921 if (ret != LDB_SUCCESS) {
3925 return ldb_next_request(ar->module, search_req);
3929 handle renames that come in over DRS replication
3931 static int replmd_replicated_handle_rename(struct replmd_replicated_request *ar,
3932 struct ldb_message *msg,
3933 struct replPropertyMetaDataBlob *rmd,
3934 struct replPropertyMetaDataBlob *omd,
3935 struct ldb_request *parent)
3937 struct replPropertyMetaData1 *md_remote;
3938 struct replPropertyMetaData1 *md_local;
3940 if (ldb_dn_compare(msg->dn, ar->search_msg->dn) == 0) {
3945 /* now we need to check for double renames. We could have a
3946 * local rename pending which our replication partner hasn't
3947 * received yet. We choose which one wins by looking at the
3948 * attribute stamps on the two objects, the newer one wins
3950 md_remote = replmd_replPropertyMetaData1_find_attid(rmd, DRSUAPI_ATTID_name);
3951 md_local = replmd_replPropertyMetaData1_find_attid(omd, DRSUAPI_ATTID_name);
3952 /* if there is no name attribute then we have to assume the
3953 object we've received is in fact newer */
3954 if (ar->objs->dsdb_repl_flags & DSDB_REPL_FLAG_PRIORITISE_INCOMING ||
3955 !md_remote || !md_local ||
3956 replmd_replPropertyMetaData1_is_newer(md_local, md_remote)) {
3957 struct ldb_request *req;
3959 TALLOC_CTX *tmp_ctx = talloc_new(msg);
3960 struct ldb_result *res;
3962 DEBUG(4,("replmd_replicated_request rename %s => %s\n",
3963 ldb_dn_get_linearized(ar->search_msg->dn),
3964 ldb_dn_get_linearized(msg->dn)));
3967 res = talloc_zero(tmp_ctx, struct ldb_result);
3969 talloc_free(tmp_ctx);
3970 return ldb_oom(ldb_module_get_ctx(ar->module));
3973 /* pass rename to the next module
3974 * so it doesn't appear as an originating update */
3975 ret = ldb_build_rename_req(&req, ldb_module_get_ctx(ar->module), tmp_ctx,
3976 ar->search_msg->dn, msg->dn,
3979 replmd_op_rename_callback,
3981 LDB_REQ_SET_LOCATION(req);
3982 if (ret != LDB_SUCCESS) {
3983 talloc_free(tmp_ctx);
3987 ret = dsdb_request_add_controls(req, DSDB_MODIFY_RELAX);
3988 if (ret != LDB_SUCCESS) {
3989 talloc_free(tmp_ctx);
3993 ret = ldb_next_request(ar->module, req);
3995 if (ret == LDB_SUCCESS) {
3996 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
3999 talloc_free(tmp_ctx);
4003 /* we're going to keep our old object */
4004 DEBUG(4,(__location__ ": Keeping object %s and rejecting older rename to %s\n",
4005 ldb_dn_get_linearized(ar->search_msg->dn),
4006 ldb_dn_get_linearized(msg->dn)));
4011 static int replmd_replicated_apply_merge(struct replmd_replicated_request *ar)
4013 struct ldb_context *ldb;
4014 struct ldb_request *change_req;
4015 enum ndr_err_code ndr_err;
4016 struct ldb_message *msg;
4017 struct replPropertyMetaDataBlob *rmd;
4018 struct replPropertyMetaDataBlob omd;
4019 const struct ldb_val *omd_value;
4020 struct replPropertyMetaDataBlob nmd;
4021 struct ldb_val nmd_value;
4024 unsigned int removed_attrs = 0;
4026 int (*callback)(struct ldb_request *req, struct ldb_reply *ares) = replmd_op_callback;
4027 bool isDeleted = false;
4028 bool local_isDeleted = false;
4029 bool remote_isDeleted = false;
4030 bool take_remote_isDeleted = false;
4031 bool sd_updated = false;
4033 ldb = ldb_module_get_ctx(ar->module);
4034 msg = ar->objs->objects[ar->index_current].msg;
4036 rmd = ar->objs->objects[ar->index_current].meta_data;
4040 /* find existing meta data */
4041 omd_value = ldb_msg_find_ldb_val(ar->search_msg, "replPropertyMetaData");
4043 ndr_err = ndr_pull_struct_blob(omd_value, ar, &omd,
4044 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
4045 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4046 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4047 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4050 if (omd.version != 1) {
4051 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
4055 local_isDeleted = ldb_msg_find_attr_as_bool(ar->search_msg,
4056 "isDeleted", false);
4057 remote_isDeleted = ldb_msg_find_attr_as_bool(msg,
4058 "isDeleted", false);
4060 /* handle renames that come in over DRS */
4061 ret = replmd_replicated_handle_rename(ar, msg, rmd, &omd, ar->req);
4064 * This particular error code means that we already tried the
4065 * conflict algrorithm, and the existing record name was newer, so we
4066 * need to rename the incoming record
4068 if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) {
4071 struct ldb_dn *new_dn;
4072 status = GUID_from_ndr_blob(&ar->objs->objects[ar->index_current].guid_value, &guid);
4073 /* This really, really can't fail */
4074 SMB_ASSERT(NT_STATUS_IS_OK(status));
4076 new_dn = replmd_conflict_dn(msg, msg->dn, &guid);
4077 if (new_dn == NULL) {
4078 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module),
4079 "Failed to form conflict DN for %s\n",
4080 ldb_dn_get_linearized(msg->dn));
4082 return replmd_replicated_request_werror(ar, WERR_NOMEM);
4085 ret = dsdb_module_rename(ar->module, ar->search_msg->dn, new_dn,
4086 DSDB_FLAG_NEXT_MODULE, ar->req);
4087 if (ret != LDB_SUCCESS) {
4088 ldb_asprintf_errstring(ldb_module_get_ctx(ar->module),
4089 "Failed to rename incoming conflicting dn '%s' (was '%s') to '%s' - %s\n",
4090 ldb_dn_get_linearized(msg->dn),
4091 ldb_dn_get_linearized(ar->search_msg->dn),
4092 ldb_dn_get_linearized(new_dn),
4093 ldb_errstring(ldb_module_get_ctx(ar->module)));
4094 return replmd_replicated_request_werror(ar, WERR_DS_DRA_DB_ERROR);
4097 /* Set the callback to one that will fix up the name to be a conflict DN */
4098 callback = replmd_op_name_modify_callback;
4100 } else if (ret != LDB_SUCCESS) {
4101 ldb_debug(ldb, LDB_DEBUG_FATAL,
4102 "replmd_replicated_request rename %s => %s failed - %s\n",
4103 ldb_dn_get_linearized(ar->search_msg->dn),
4104 ldb_dn_get_linearized(msg->dn),
4105 ldb_errstring(ldb));
4106 return replmd_replicated_request_werror(ar, WERR_DS_DRA_DB_ERROR);
4111 nmd.ctr.ctr1.count = omd.ctr.ctr1.count + rmd->ctr.ctr1.count;
4112 nmd.ctr.ctr1.array = talloc_array(ar,
4113 struct replPropertyMetaData1,
4114 nmd.ctr.ctr1.count);
4115 if (!nmd.ctr.ctr1.array) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4117 /* first copy the old meta data */
4118 for (i=0; i < omd.ctr.ctr1.count; i++) {
4119 nmd.ctr.ctr1.array[ni] = omd.ctr.ctr1.array[i];
4124 /* now merge in the new meta data */
4125 for (i=0; i < rmd->ctr.ctr1.count; i++) {
4128 for (j=0; j < ni; j++) {
4131 if (rmd->ctr.ctr1.array[i].attid != nmd.ctr.ctr1.array[j].attid) {
4135 if (ar->objs->dsdb_repl_flags & DSDB_REPL_FLAG_PRIORITISE_INCOMING) {
4136 /* if we compare equal then do an
4137 update. This is used when a client
4138 asks for a FULL_SYNC, and can be
4139 used to recover a corrupt
4141 cmp = !replmd_replPropertyMetaData1_is_newer(&rmd->ctr.ctr1.array[i],
4142 &nmd.ctr.ctr1.array[j]);
4144 cmp = replmd_replPropertyMetaData1_is_newer(&nmd.ctr.ctr1.array[j],
4145 &rmd->ctr.ctr1.array[i]);
4148 /* replace the entry */
4149 nmd.ctr.ctr1.array[j] = rmd->ctr.ctr1.array[i];
4150 if (ar->seq_num == 0) {
4151 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ar->seq_num);
4152 if (ret != LDB_SUCCESS) {
4153 return replmd_replicated_request_error(ar, ret);
4156 nmd.ctr.ctr1.array[j].local_usn = ar->seq_num;
4157 switch (nmd.ctr.ctr1.array[j].attid) {
4158 case DRSUAPI_ATTID_ntSecurityDescriptor:
4161 case DRSUAPI_ATTID_isDeleted:
4162 take_remote_isDeleted = true;
4171 if (rmd->ctr.ctr1.array[i].attid != DRSUAPI_ATTID_instanceType) {
4172 DEBUG(3,("Discarding older DRS attribute update to %s on %s from %s\n",
4173 msg->elements[i-removed_attrs].name,
4174 ldb_dn_get_linearized(msg->dn),
4175 GUID_string(ar, &rmd->ctr.ctr1.array[i].originating_invocation_id)));
4178 /* we don't want to apply this change so remove the attribute */
4179 ldb_msg_remove_element(msg, &msg->elements[i-removed_attrs]);
4186 if (found) continue;
4188 nmd.ctr.ctr1.array[ni] = rmd->ctr.ctr1.array[i];
4189 if (ar->seq_num == 0) {
4190 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ar->seq_num);
4191 if (ret != LDB_SUCCESS) {
4192 return replmd_replicated_request_error(ar, ret);
4195 nmd.ctr.ctr1.array[ni].local_usn = ar->seq_num;
4196 switch (nmd.ctr.ctr1.array[ni].attid) {
4197 case DRSUAPI_ATTID_ntSecurityDescriptor:
4200 case DRSUAPI_ATTID_isDeleted:
4201 take_remote_isDeleted = true;
4210 * finally correct the size of the meta_data array
4212 nmd.ctr.ctr1.count = ni;
4215 * the rdn attribute (the alias for the name attribute),
4216 * 'cn' for most objects is the last entry in the meta data array
4219 * sort the new meta data array
4221 ret = replmd_replPropertyMetaDataCtr1_sort(&nmd.ctr.ctr1, ar->schema, msg->dn);
4222 if (ret != LDB_SUCCESS) {
4227 * check if some replicated attributes left, otherwise skip the ldb_modify() call
4229 if (msg->num_elements == 0) {
4230 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_replicated_apply_merge[%u]: skip replace\n",
4233 ar->index_current++;
4234 return replmd_replicated_apply_next(ar);
4237 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_replicated_apply_merge[%u]: replace %u attributes\n",
4238 ar->index_current, msg->num_elements);
4240 if (take_remote_isDeleted) {
4241 isDeleted = remote_isDeleted;
4243 isDeleted = local_isDeleted;
4246 if (sd_updated && !isDeleted) {
4247 ret = dsdb_module_schedule_sd_propagation(ar->module,
4249 if (ret != LDB_SUCCESS) {
4250 return ldb_operr(ldb);
4254 /* create the meta data value */
4255 ndr_err = ndr_push_struct_blob(&nmd_value, msg, &nmd,
4256 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
4257 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4258 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4259 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4263 * when we know that we'll modify the record, add the whenChanged, uSNChanged
4264 * and replPopertyMetaData attributes
4266 ret = ldb_msg_add_string(msg, "whenChanged", ar->objs->objects[ar->index_current].when_changed);
4267 if (ret != LDB_SUCCESS) {
4268 return replmd_replicated_request_error(ar, ret);
4270 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ar->seq_num);
4271 if (ret != LDB_SUCCESS) {
4272 return replmd_replicated_request_error(ar, ret);
4274 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &nmd_value, NULL);
4275 if (ret != LDB_SUCCESS) {
4276 return replmd_replicated_request_error(ar, ret);
4279 replmd_ldb_message_sort(msg, ar->schema);
4281 /* we want to replace the old values */
4282 for (i=0; i < msg->num_elements; i++) {
4283 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
4287 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_MODIFY, msg);
4288 DEBUG(4, ("DRS replication modify message:\n%s\n", s));
4292 ret = ldb_build_mod_req(&change_req,
4300 LDB_REQ_SET_LOCATION(change_req);
4301 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4303 /* current partition control needed by "repmd_op_callback" */
4304 ret = ldb_request_add_control(change_req,
4305 DSDB_CONTROL_CURRENT_PARTITION_OID,
4307 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4309 return ldb_next_request(ar->module, change_req);
4312 static int replmd_replicated_apply_search_callback(struct ldb_request *req,
4313 struct ldb_reply *ares)
4315 struct replmd_replicated_request *ar = talloc_get_type(req->context,
4316 struct replmd_replicated_request);
4320 return ldb_module_done(ar->req, NULL, NULL,
4321 LDB_ERR_OPERATIONS_ERROR);
4323 if (ares->error != LDB_SUCCESS &&
4324 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
4325 return ldb_module_done(ar->req, ares->controls,
4326 ares->response, ares->error);
4329 switch (ares->type) {
4330 case LDB_REPLY_ENTRY:
4331 ar->search_msg = talloc_steal(ar, ares->message);
4334 case LDB_REPLY_REFERRAL:
4335 /* we ignore referrals */
4338 case LDB_REPLY_DONE:
4339 ar->objs->objects[ar->index_current].last_known_parent = NULL;
4341 if (ar->search_msg != NULL) {
4342 ret = replmd_replicated_apply_merge(ar);
4344 ret = replmd_replicated_apply_search_for_parent(ar);
4346 if (ret != LDB_SUCCESS) {
4347 return ldb_module_done(ar->req, NULL, NULL, ret);
4355 static int replmd_replicated_uptodate_vector(struct replmd_replicated_request *ar);
4357 static int replmd_replicated_apply_next(struct replmd_replicated_request *ar)
4359 struct ldb_context *ldb;
4363 struct ldb_request *search_req;
4364 struct ldb_search_options_control *options;
4366 if (ar->index_current >= ar->objs->num_objects) {
4367 /* done with it, go to next stage */
4368 return replmd_replicated_uptodate_vector(ar);
4371 ldb = ldb_module_get_ctx(ar->module);
4372 ar->search_msg = NULL;
4374 tmp_str = ldb_binary_encode(ar, ar->objs->objects[ar->index_current].guid_value);
4375 if (!tmp_str) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4377 filter = talloc_asprintf(ar, "(objectGUID=%s)", tmp_str);
4378 if (!filter) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4379 talloc_free(tmp_str);
4381 ret = ldb_build_search_req(&search_req,
4390 replmd_replicated_apply_search_callback,
4392 LDB_REQ_SET_LOCATION(search_req);
4394 ret = ldb_request_add_control(search_req, LDB_CONTROL_SHOW_RECYCLED_OID,
4396 if (ret != LDB_SUCCESS) {
4400 /* we need to cope with cross-partition links, so search for
4401 the GUID over all partitions */
4402 options = talloc(search_req, struct ldb_search_options_control);
4403 if (options == NULL) {
4404 DEBUG(0, (__location__ ": out of memory\n"));
4405 return LDB_ERR_OPERATIONS_ERROR;
4407 options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
4409 ret = ldb_request_add_control(search_req,
4410 LDB_CONTROL_SEARCH_OPTIONS_OID,
4412 if (ret != LDB_SUCCESS) {
4416 return ldb_next_request(ar->module, search_req);
4419 static int replmd_replicated_uptodate_modify_callback(struct ldb_request *req,
4420 struct ldb_reply *ares)
4422 struct ldb_context *ldb;
4423 struct replmd_replicated_request *ar = talloc_get_type(req->context,
4424 struct replmd_replicated_request);
4425 ldb = ldb_module_get_ctx(ar->module);
4428 return ldb_module_done(ar->req, NULL, NULL,
4429 LDB_ERR_OPERATIONS_ERROR);
4431 if (ares->error != LDB_SUCCESS) {
4432 return ldb_module_done(ar->req, ares->controls,
4433 ares->response, ares->error);
4436 if (ares->type != LDB_REPLY_DONE) {
4437 ldb_asprintf_errstring(ldb, "Invalid LDB reply type %d", ares->type);
4438 return ldb_module_done(ar->req, NULL, NULL,
4439 LDB_ERR_OPERATIONS_ERROR);
4444 return ldb_module_done(ar->req, NULL, NULL, LDB_SUCCESS);
4447 static int replmd_replicated_uptodate_modify(struct replmd_replicated_request *ar)
4449 struct ldb_context *ldb;
4450 struct ldb_request *change_req;
4451 enum ndr_err_code ndr_err;
4452 struct ldb_message *msg;
4453 struct replUpToDateVectorBlob ouv;
4454 const struct ldb_val *ouv_value;
4455 const struct drsuapi_DsReplicaCursor2CtrEx *ruv;
4456 struct replUpToDateVectorBlob nuv;
4457 struct ldb_val nuv_value;
4458 struct ldb_message_element *nuv_el = NULL;
4459 const struct GUID *our_invocation_id;
4460 struct ldb_message_element *orf_el = NULL;
4461 struct repsFromToBlob nrf;
4462 struct ldb_val *nrf_value = NULL;
4463 struct ldb_message_element *nrf_el = NULL;
4467 time_t t = time(NULL);
4470 uint32_t instanceType;
4472 ldb = ldb_module_get_ctx(ar->module);
4473 ruv = ar->objs->uptodateness_vector;
4479 unix_to_nt_time(&now, t);
4481 if (ar->search_msg == NULL) {
4482 /* this happens for a REPL_OBJ call where we are
4483 creating the target object by replicating it. The
4484 subdomain join code does this for the partition DN
4486 DEBUG(4,(__location__ ": Skipping UDV and repsFrom update as no target DN\n"));
4487 return ldb_module_done(ar->req, NULL, NULL, LDB_SUCCESS);
4490 instanceType = ldb_msg_find_attr_as_uint(ar->search_msg, "instanceType", 0);
4491 if (! (instanceType & INSTANCE_TYPE_IS_NC_HEAD)) {
4492 DEBUG(4,(__location__ ": Skipping UDV and repsFrom update as not NC root: %s\n",
4493 ldb_dn_get_linearized(ar->search_msg->dn)));
4494 return ldb_module_done(ar->req, NULL, NULL, LDB_SUCCESS);
4498 * first create the new replUpToDateVector
4500 ouv_value = ldb_msg_find_ldb_val(ar->search_msg, "replUpToDateVector");
4502 ndr_err = ndr_pull_struct_blob(ouv_value, ar, &ouv,
4503 (ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob);
4504 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4505 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4506 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4509 if (ouv.version != 2) {
4510 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
4515 * the new uptodateness vector will at least
4516 * contain 1 entry, one for the source_dsa
4518 * plus optional values from our old vector and the one from the source_dsa
4520 nuv.ctr.ctr2.count = 1 + ouv.ctr.ctr2.count;
4521 if (ruv) nuv.ctr.ctr2.count += ruv->count;
4522 nuv.ctr.ctr2.cursors = talloc_array(ar,
4523 struct drsuapi_DsReplicaCursor2,
4524 nuv.ctr.ctr2.count);
4525 if (!nuv.ctr.ctr2.cursors) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4527 /* first copy the old vector */
4528 for (i=0; i < ouv.ctr.ctr2.count; i++) {
4529 nuv.ctr.ctr2.cursors[ni] = ouv.ctr.ctr2.cursors[i];
4533 /* get our invocation_id if we have one already attached to the ldb */
4534 our_invocation_id = samdb_ntds_invocation_id(ldb);
4536 /* merge in the source_dsa vector is available */
4537 for (i=0; (ruv && i < ruv->count); i++) {
4540 if (our_invocation_id &&
4541 GUID_equal(&ruv->cursors[i].source_dsa_invocation_id,
4542 our_invocation_id)) {
4546 for (j=0; j < ni; j++) {
4547 if (!GUID_equal(&ruv->cursors[i].source_dsa_invocation_id,
4548 &nuv.ctr.ctr2.cursors[j].source_dsa_invocation_id)) {
4555 * we update only the highest_usn and not the latest_sync_success time,
4556 * because the last success stands for direct replication
4558 if (ruv->cursors[i].highest_usn > nuv.ctr.ctr2.cursors[j].highest_usn) {
4559 nuv.ctr.ctr2.cursors[j].highest_usn = ruv->cursors[i].highest_usn;
4564 if (found) continue;
4566 /* if it's not there yet, add it */
4567 nuv.ctr.ctr2.cursors[ni] = ruv->cursors[i];
4572 * merge in the current highwatermark for the source_dsa
4575 for (j=0; j < ni; j++) {
4576 if (!GUID_equal(&ar->objs->source_dsa->source_dsa_invocation_id,
4577 &nuv.ctr.ctr2.cursors[j].source_dsa_invocation_id)) {
4584 * here we update the highest_usn and last_sync_success time
4585 * because we're directly replicating from the source_dsa
4587 * and use the tmp_highest_usn because this is what we have just applied
4590 nuv.ctr.ctr2.cursors[j].highest_usn = ar->objs->source_dsa->highwatermark.tmp_highest_usn;
4591 nuv.ctr.ctr2.cursors[j].last_sync_success = now;
4596 * here we update the highest_usn and last_sync_success time
4597 * because we're directly replicating from the source_dsa
4599 * and use the tmp_highest_usn because this is what we have just applied
4602 nuv.ctr.ctr2.cursors[ni].source_dsa_invocation_id= ar->objs->source_dsa->source_dsa_invocation_id;
4603 nuv.ctr.ctr2.cursors[ni].highest_usn = ar->objs->source_dsa->highwatermark.tmp_highest_usn;
4604 nuv.ctr.ctr2.cursors[ni].last_sync_success = now;
4609 * finally correct the size of the cursors array
4611 nuv.ctr.ctr2.count = ni;
4616 TYPESAFE_QSORT(nuv.ctr.ctr2.cursors, nuv.ctr.ctr2.count, drsuapi_DsReplicaCursor2_compare);
4619 * create the change ldb_message
4621 msg = ldb_msg_new(ar);
4622 if (!msg) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4623 msg->dn = ar->search_msg->dn;
4625 ndr_err = ndr_push_struct_blob(&nuv_value, msg, &nuv,
4626 (ndr_push_flags_fn_t)ndr_push_replUpToDateVectorBlob);
4627 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4628 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4629 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4631 ret = ldb_msg_add_value(msg, "replUpToDateVector", &nuv_value, &nuv_el);
4632 if (ret != LDB_SUCCESS) {
4633 return replmd_replicated_request_error(ar, ret);
4635 nuv_el->flags = LDB_FLAG_MOD_REPLACE;
4638 * now create the new repsFrom value from the given repsFromTo1 structure
4642 nrf.ctr.ctr1 = *ar->objs->source_dsa;
4643 nrf.ctr.ctr1.highwatermark.highest_usn = nrf.ctr.ctr1.highwatermark.tmp_highest_usn;
4646 * first see if we already have a repsFrom value for the current source dsa
4647 * if so we'll later replace this value
4649 orf_el = ldb_msg_find_element(ar->search_msg, "repsFrom");
4651 for (i=0; i < orf_el->num_values; i++) {
4652 struct repsFromToBlob *trf;
4654 trf = talloc(ar, struct repsFromToBlob);
4655 if (!trf) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4657 ndr_err = ndr_pull_struct_blob(&orf_el->values[i], trf, trf,
4658 (ndr_pull_flags_fn_t)ndr_pull_repsFromToBlob);
4659 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4660 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4661 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4664 if (trf->version != 1) {
4665 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
4669 * we compare the source dsa objectGUID not the invocation_id
4670 * because we want only one repsFrom value per source dsa
4671 * and when the invocation_id of the source dsa has changed we don't need
4672 * the old repsFrom with the old invocation_id
4674 if (!GUID_equal(&trf->ctr.ctr1.source_dsa_obj_guid,
4675 &ar->objs->source_dsa->source_dsa_obj_guid)) {
4681 nrf_value = &orf_el->values[i];
4686 * copy over all old values to the new ldb_message
4688 ret = ldb_msg_add_empty(msg, "repsFrom", 0, &nrf_el);
4689 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4694 * if we haven't found an old repsFrom value for the current source dsa
4695 * we'll add a new value
4698 struct ldb_val zero_value;
4699 ZERO_STRUCT(zero_value);
4700 ret = ldb_msg_add_value(msg, "repsFrom", &zero_value, &nrf_el);
4701 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4703 nrf_value = &nrf_el->values[nrf_el->num_values - 1];
4706 /* we now fill the value which is already attached to ldb_message */
4707 ndr_err = ndr_push_struct_blob(nrf_value, msg,
4709 (ndr_push_flags_fn_t)ndr_push_repsFromToBlob);
4710 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
4711 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
4712 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
4716 * the ldb_message_element for the attribute, has all the old values and the new one
4717 * so we'll replace the whole attribute with all values
4719 nrf_el->flags = LDB_FLAG_MOD_REPLACE;
4721 if (CHECK_DEBUGLVL(4)) {
4722 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_MODIFY, msg);
4723 DEBUG(4, ("DRS replication uptodate modify message:\n%s\n", s));
4727 /* prepare the ldb_modify() request */
4728 ret = ldb_build_mod_req(&change_req,
4734 replmd_replicated_uptodate_modify_callback,
4736 LDB_REQ_SET_LOCATION(change_req);
4737 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4739 return ldb_next_request(ar->module, change_req);
4742 static int replmd_replicated_uptodate_search_callback(struct ldb_request *req,
4743 struct ldb_reply *ares)
4745 struct replmd_replicated_request *ar = talloc_get_type(req->context,
4746 struct replmd_replicated_request);
4750 return ldb_module_done(ar->req, NULL, NULL,
4751 LDB_ERR_OPERATIONS_ERROR);
4753 if (ares->error != LDB_SUCCESS &&
4754 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
4755 return ldb_module_done(ar->req, ares->controls,
4756 ares->response, ares->error);
4759 switch (ares->type) {
4760 case LDB_REPLY_ENTRY:
4761 ar->search_msg = talloc_steal(ar, ares->message);
4764 case LDB_REPLY_REFERRAL:
4765 /* we ignore referrals */
4768 case LDB_REPLY_DONE:
4769 ret = replmd_replicated_uptodate_modify(ar);
4770 if (ret != LDB_SUCCESS) {
4771 return ldb_module_done(ar->req, NULL, NULL, ret);
4780 static int replmd_replicated_uptodate_vector(struct replmd_replicated_request *ar)
4782 struct ldb_context *ldb;
4784 static const char *attrs[] = {
4785 "replUpToDateVector",
4790 struct ldb_request *search_req;
4792 ldb = ldb_module_get_ctx(ar->module);
4793 ar->search_msg = NULL;
4795 ret = ldb_build_search_req(&search_req,
4798 ar->objs->partition_dn,
4804 replmd_replicated_uptodate_search_callback,
4806 LDB_REQ_SET_LOCATION(search_req);
4807 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
4809 return ldb_next_request(ar->module, search_req);
4814 static int replmd_extended_replicated_objects(struct ldb_module *module, struct ldb_request *req)
4816 struct ldb_context *ldb;
4817 struct dsdb_extended_replicated_objects *objs;
4818 struct replmd_replicated_request *ar;
4819 struct ldb_control **ctrls;
4822 struct replmd_private *replmd_private =
4823 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
4824 struct dsdb_control_replicated_update *rep_update;
4826 ldb = ldb_module_get_ctx(module);
4828 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_extended_replicated_objects\n");
4830 objs = talloc_get_type(req->op.extended.data, struct dsdb_extended_replicated_objects);
4832 ldb_debug(ldb, LDB_DEBUG_FATAL, "replmd_extended_replicated_objects: invalid extended data\n");
4833 return LDB_ERR_PROTOCOL_ERROR;
4836 if (objs->version != DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION) {
4837 ldb_debug(ldb, LDB_DEBUG_FATAL, "replmd_extended_replicated_objects: extended data invalid version [%u != %u]\n",
4838 objs->version, DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION);
4839 return LDB_ERR_PROTOCOL_ERROR;
4842 ar = replmd_ctx_init(module, req);
4844 return LDB_ERR_OPERATIONS_ERROR;
4846 /* Set the flags to have the replmd_op_callback run over the full set of objects */
4847 ar->apply_mode = true;
4849 ar->schema = dsdb_get_schema(ldb, ar);
4851 ldb_debug_set(ldb, LDB_DEBUG_FATAL, "replmd_ctx_init: no loaded schema found\n");
4853 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
4854 return LDB_ERR_CONSTRAINT_VIOLATION;
4857 ctrls = req->controls;
4859 if (req->controls) {
4860 req->controls = talloc_memdup(ar, req->controls,
4861 talloc_get_size(req->controls));
4862 if (!req->controls) return replmd_replicated_request_werror(ar, WERR_NOMEM);
4865 /* This allows layers further down to know if a change came in
4866 over replication and what the replication flags were */
4867 rep_update = talloc_zero(ar, struct dsdb_control_replicated_update);
4868 if (rep_update == NULL) {
4869 return ldb_module_oom(module);
4871 rep_update->dsdb_repl_flags = objs->dsdb_repl_flags;
4873 ret = ldb_request_add_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID, false, rep_update);
4874 if (ret != LDB_SUCCESS) {
4878 /* If this change contained linked attributes in the body
4879 * (rather than in the links section) we need to update
4880 * backlinks in linked_attributes */
4881 ret = ldb_request_add_control(req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
4882 if (ret != LDB_SUCCESS) {
4886 ar->controls = req->controls;
4887 req->controls = ctrls;
4889 DEBUG(4,("linked_attributes_count=%u\n", objs->linked_attributes_count));
4891 /* save away the linked attributes for the end of the
4893 for (i=0; i<ar->objs->linked_attributes_count; i++) {
4894 struct la_entry *la_entry;
4896 if (replmd_private->la_ctx == NULL) {
4897 replmd_private->la_ctx = talloc_new(replmd_private);
4899 la_entry = talloc(replmd_private->la_ctx, struct la_entry);
4900 if (la_entry == NULL) {
4902 return LDB_ERR_OPERATIONS_ERROR;
4904 la_entry->la = talloc(la_entry, struct drsuapi_DsReplicaLinkedAttribute);
4905 if (la_entry->la == NULL) {
4906 talloc_free(la_entry);
4908 return LDB_ERR_OPERATIONS_ERROR;
4910 *la_entry->la = ar->objs->linked_attributes[i];
4912 /* we need to steal the non-scalars so they stay
4913 around until the end of the transaction */
4914 talloc_steal(la_entry->la, la_entry->la->identifier);
4915 talloc_steal(la_entry->la, la_entry->la->value.blob);
4917 DLIST_ADD(replmd_private->la_list, la_entry);
4920 return replmd_replicated_apply_next(ar);
4924 process one linked attribute structure
4926 static int replmd_process_linked_attribute(struct ldb_module *module,
4927 struct la_entry *la_entry,
4928 struct ldb_request *parent)
4930 struct drsuapi_DsReplicaLinkedAttribute *la = la_entry->la;
4931 struct ldb_context *ldb = ldb_module_get_ctx(module);
4932 struct ldb_message *msg;
4933 TALLOC_CTX *tmp_ctx = talloc_new(la_entry);
4934 const struct dsdb_schema *schema = dsdb_get_schema(ldb, tmp_ctx);
4936 const struct dsdb_attribute *attr;
4937 struct dsdb_dn *dsdb_dn;
4938 uint64_t seq_num = 0;
4939 struct ldb_message_element *old_el;
4941 time_t t = time(NULL);
4942 struct ldb_result *res;
4943 const char *attrs[2];
4944 struct parsed_dn *pdn_list, *pdn;
4945 struct GUID guid = GUID_zero();
4947 bool active = (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)?true:false;
4948 const struct GUID *our_invocation_id;
4951 linked_attributes[0]:
4952 &objs->linked_attributes[i]: struct drsuapi_DsReplicaLinkedAttribute
4954 identifier: struct drsuapi_DsReplicaObjectIdentifier
4955 __ndr_size : 0x0000003a (58)
4956 __ndr_size_sid : 0x00000000 (0)
4957 guid : 8e95b6a9-13dd-4158-89db-3220a5be5cc7
4959 __ndr_size_dn : 0x00000000 (0)
4961 attid : DRSUAPI_ATTID_member (0x1F)
4962 value: struct drsuapi_DsAttributeValue
4963 __ndr_size : 0x0000007e (126)
4965 blob : DATA_BLOB length=126
4966 flags : 0x00000001 (1)
4967 1: DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE
4968 originating_add_time : Wed Sep 2 22:20:01 2009 EST
4969 meta_data: struct drsuapi_DsReplicaMetaData
4970 version : 0x00000015 (21)
4971 originating_change_time : Wed Sep 2 23:39:07 2009 EST
4972 originating_invocation_id: 794640f3-18cf-40ee-a211-a93992b67a64
4973 originating_usn : 0x000000000001e19c (123292)
4975 (for cases where the link is to a normal DN)
4976 &target: struct drsuapi_DsReplicaObjectIdentifier3
4977 __ndr_size : 0x0000007e (126)
4978 __ndr_size_sid : 0x0000001c (28)
4979 guid : 7639e594-db75-4086-b0d4-67890ae46031
4980 sid : S-1-5-21-2848215498-2472035911-1947525656-19924
4981 __ndr_size_dn : 0x00000022 (34)
4982 dn : 'CN=UOne,OU=TestOU,DC=vsofs8,DC=com'
4985 /* find the attribute being modified */
4986 attr = dsdb_attribute_by_attributeID_id(schema, la->attid);
4988 DEBUG(0, (__location__ ": Unable to find attributeID 0x%x\n", la->attid));
4989 talloc_free(tmp_ctx);
4990 return LDB_ERR_OPERATIONS_ERROR;
4993 attrs[0] = attr->lDAPDisplayName;
4996 /* get the existing message from the db for the object with
4997 this GUID, returning attribute being modified. We will then
4998 use this msg as the basis for a modify call */
4999 ret = dsdb_module_search(module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE, attrs,
5000 DSDB_FLAG_NEXT_MODULE |
5001 DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
5002 DSDB_SEARCH_SHOW_RECYCLED |
5003 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
5004 DSDB_SEARCH_REVEAL_INTERNALS,
5006 "objectGUID=%s", GUID_string(tmp_ctx, &la->identifier->guid));
5007 if (ret != LDB_SUCCESS) {
5008 talloc_free(tmp_ctx);
5011 if (res->count != 1) {
5012 ldb_asprintf_errstring(ldb, "DRS linked attribute for GUID %s - DN not found",
5013 GUID_string(tmp_ctx, &la->identifier->guid));
5014 talloc_free(tmp_ctx);
5015 return LDB_ERR_NO_SUCH_OBJECT;
5019 if (msg->num_elements == 0) {
5020 ret = ldb_msg_add_empty(msg, attr->lDAPDisplayName, LDB_FLAG_MOD_REPLACE, &old_el);
5021 if (ret != LDB_SUCCESS) {
5022 ldb_module_oom(module);
5023 talloc_free(tmp_ctx);
5024 return LDB_ERR_OPERATIONS_ERROR;
5027 old_el = &msg->elements[0];
5028 old_el->flags = LDB_FLAG_MOD_REPLACE;
5031 /* parse the existing links */
5032 ret = get_parsed_dns(module, tmp_ctx, old_el, &pdn_list, attr->syntax->ldap_oid, parent);
5033 if (ret != LDB_SUCCESS) {
5034 talloc_free(tmp_ctx);
5038 /* get our invocationId */
5039 our_invocation_id = samdb_ntds_invocation_id(ldb);
5040 if (!our_invocation_id) {
5041 ldb_debug_set(ldb, LDB_DEBUG_ERROR, __location__ ": unable to find invocationId\n");
5042 talloc_free(tmp_ctx);
5043 return LDB_ERR_OPERATIONS_ERROR;
5046 ret = replmd_check_upgrade_links(pdn_list, old_el->num_values, old_el, our_invocation_id);
5047 if (ret != LDB_SUCCESS) {
5048 talloc_free(tmp_ctx);
5052 status = dsdb_dn_la_from_blob(ldb, attr, schema, tmp_ctx, la->value.blob, &dsdb_dn);
5053 if (!W_ERROR_IS_OK(status)) {
5054 ldb_asprintf_errstring(ldb, "Failed to parsed linked attribute blob for %s on %s - %s\n",
5055 old_el->name, ldb_dn_get_linearized(msg->dn), win_errstr(status));
5056 return LDB_ERR_OPERATIONS_ERROR;
5059 ntstatus = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid, "GUID");
5060 if (!NT_STATUS_IS_OK(ntstatus) && active) {
5061 ldb_asprintf_errstring(ldb, "Failed to find GUID in linked attribute blob for %s on %s from %s",
5063 ldb_dn_get_linearized(dsdb_dn->dn),
5064 ldb_dn_get_linearized(msg->dn));
5065 return LDB_ERR_OPERATIONS_ERROR;
5068 /* re-resolve the DN by GUID, as the DRS server may give us an
5070 ret = dsdb_module_dn_by_guid(module, dsdb_dn, &guid, &dsdb_dn->dn, parent);
5071 if (ret != LDB_SUCCESS) {
5072 DEBUG(2,(__location__ ": WARNING: Failed to re-resolve GUID %s - using %s\n",
5073 GUID_string(tmp_ctx, &guid),
5074 ldb_dn_get_linearized(dsdb_dn->dn)));
5077 /* see if this link already exists */
5078 pdn = parsed_dn_find(pdn_list, old_el->num_values, &guid, dsdb_dn->dn);
5080 /* see if this update is newer than what we have already */
5081 struct GUID invocation_id = GUID_zero();
5082 uint32_t version = 0;
5083 uint32_t originating_usn = 0;
5084 NTTIME change_time = 0;
5085 uint32_t rmd_flags = dsdb_dn_rmd_flags(pdn->dsdb_dn->dn);
5087 dsdb_get_extended_dn_guid(pdn->dsdb_dn->dn, &invocation_id, "RMD_INVOCID");
5088 dsdb_get_extended_dn_uint32(pdn->dsdb_dn->dn, &version, "RMD_VERSION");
5089 dsdb_get_extended_dn_uint32(pdn->dsdb_dn->dn, &originating_usn, "RMD_ORIGINATING_USN");
5090 dsdb_get_extended_dn_nttime(pdn->dsdb_dn->dn, &change_time, "RMD_CHANGETIME");
5092 if (!replmd_update_is_newer(&invocation_id,
5093 &la->meta_data.originating_invocation_id,
5095 la->meta_data.version,
5097 la->meta_data.originating_change_time)) {
5098 DEBUG(3,("Discarding older DRS linked attribute update to %s on %s from %s\n",
5099 old_el->name, ldb_dn_get_linearized(msg->dn),
5100 GUID_string(tmp_ctx, &la->meta_data.originating_invocation_id)));
5101 talloc_free(tmp_ctx);
5105 /* get a seq_num for this change */
5106 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
5107 if (ret != LDB_SUCCESS) {
5108 talloc_free(tmp_ctx);
5112 if (!(rmd_flags & DSDB_RMD_FLAG_DELETED)) {
5113 /* remove the existing backlink */
5114 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid, false, attr, false);
5115 if (ret != LDB_SUCCESS) {
5116 talloc_free(tmp_ctx);
5121 ret = replmd_update_la_val(tmp_ctx, pdn->v, dsdb_dn, pdn->dsdb_dn,
5122 &la->meta_data.originating_invocation_id,
5123 la->meta_data.originating_usn, seq_num,
5124 la->meta_data.originating_change_time,
5125 la->meta_data.version,
5127 if (ret != LDB_SUCCESS) {
5128 talloc_free(tmp_ctx);
5133 /* add the new backlink */
5134 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid, true, attr, false);
5135 if (ret != LDB_SUCCESS) {
5136 talloc_free(tmp_ctx);
5141 /* get a seq_num for this change */
5142 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
5143 if (ret != LDB_SUCCESS) {
5144 talloc_free(tmp_ctx);
5148 old_el->values = talloc_realloc(msg->elements, old_el->values,
5149 struct ldb_val, old_el->num_values+1);
5150 if (!old_el->values) {
5151 ldb_module_oom(module);
5152 return LDB_ERR_OPERATIONS_ERROR;
5154 old_el->num_values++;
5156 ret = replmd_build_la_val(tmp_ctx, &old_el->values[old_el->num_values-1], dsdb_dn,
5157 &la->meta_data.originating_invocation_id,
5158 la->meta_data.originating_usn, seq_num,
5159 la->meta_data.originating_change_time,
5160 la->meta_data.version,
5161 (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)?false:true);
5162 if (ret != LDB_SUCCESS) {
5163 talloc_free(tmp_ctx);
5168 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid,
5170 if (ret != LDB_SUCCESS) {
5171 talloc_free(tmp_ctx);
5177 /* we only change whenChanged and uSNChanged if the seq_num
5179 ret = add_time_element(msg, "whenChanged", t);
5180 if (ret != LDB_SUCCESS) {
5181 talloc_free(tmp_ctx);
5186 ret = add_uint64_element(ldb, msg, "uSNChanged", seq_num);
5187 if (ret != LDB_SUCCESS) {
5188 talloc_free(tmp_ctx);
5193 old_el = ldb_msg_find_element(msg, attr->lDAPDisplayName);
5194 if (old_el == NULL) {
5195 talloc_free(tmp_ctx);
5196 return ldb_operr(ldb);
5199 ret = dsdb_check_single_valued_link(attr, old_el);
5200 if (ret != LDB_SUCCESS) {
5201 talloc_free(tmp_ctx);
5205 old_el->flags |= LDB_FLAG_INTERNAL_DISABLE_SINGLE_VALUE_CHECK;
5207 ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE, parent);
5208 if (ret != LDB_SUCCESS) {
5209 ldb_debug(ldb, LDB_DEBUG_WARNING, "Failed to apply linked attribute change '%s'\n%s\n",
5211 ldb_ldif_message_string(ldb, tmp_ctx, LDB_CHANGETYPE_MODIFY, msg));
5212 talloc_free(tmp_ctx);
5216 talloc_free(tmp_ctx);
5221 static int replmd_extended(struct ldb_module *module, struct ldb_request *req)
5223 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_REPLICATED_OBJECTS_OID) == 0) {
5224 return replmd_extended_replicated_objects(module, req);
5227 return ldb_next_request(module, req);
5232 we hook into the transaction operations to allow us to
5233 perform the linked attribute updates at the end of the whole
5234 transaction. This allows a forward linked attribute to be created
5235 before the object is created. During a vampire, w2k8 sends us linked
5236 attributes before the objects they are part of.
5238 static int replmd_start_transaction(struct ldb_module *module)
5240 /* create our private structure for this transaction */
5241 struct replmd_private *replmd_private = talloc_get_type(ldb_module_get_private(module),
5242 struct replmd_private);
5243 replmd_txn_cleanup(replmd_private);
5245 /* free any leftover mod_usn records from cancelled
5247 while (replmd_private->ncs) {
5248 struct nc_entry *e = replmd_private->ncs;
5249 DLIST_REMOVE(replmd_private->ncs, e);
5253 return ldb_next_start_trans(module);
5257 on prepare commit we loop over our queued la_context structures and
5260 static int replmd_prepare_commit(struct ldb_module *module)
5262 struct replmd_private *replmd_private =
5263 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
5264 struct la_entry *la, *prev;
5265 struct la_backlink *bl;
5268 /* walk the list backwards, to do the first entry first, as we
5269 * added the entries with DLIST_ADD() which puts them at the
5270 * start of the list */
5271 for (la = DLIST_TAIL(replmd_private->la_list); la; la=prev) {
5272 prev = DLIST_PREV(la);
5273 DLIST_REMOVE(replmd_private->la_list, la);
5274 ret = replmd_process_linked_attribute(module, la, NULL);
5275 if (ret != LDB_SUCCESS) {
5276 replmd_txn_cleanup(replmd_private);
5281 /* process our backlink list, creating and deleting backlinks
5283 for (bl=replmd_private->la_backlinks; bl; bl=bl->next) {
5284 ret = replmd_process_backlink(module, bl, NULL);
5285 if (ret != LDB_SUCCESS) {
5286 replmd_txn_cleanup(replmd_private);
5291 replmd_txn_cleanup(replmd_private);
5293 /* possibly change @REPLCHANGED */
5294 ret = replmd_notify_store(module, NULL);
5295 if (ret != LDB_SUCCESS) {
5299 return ldb_next_prepare_commit(module);
5302 static int replmd_del_transaction(struct ldb_module *module)
5304 struct replmd_private *replmd_private =
5305 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
5306 replmd_txn_cleanup(replmd_private);
5308 return ldb_next_del_trans(module);
5312 static const struct ldb_module_ops ldb_repl_meta_data_module_ops = {
5313 .name = "repl_meta_data",
5314 .init_context = replmd_init,
5316 .modify = replmd_modify,
5317 .rename = replmd_rename,
5318 .del = replmd_delete,
5319 .extended = replmd_extended,
5320 .start_transaction = replmd_start_transaction,
5321 .prepare_commit = replmd_prepare_commit,
5322 .del_transaction = replmd_del_transaction,
5325 int ldb_repl_meta_data_module_init(const char *version)
5327 LDB_MODULE_CHECK_VERSION(version);
5328 return ldb_register_module(&ldb_repl_meta_data_module_ops);