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/dom_sid.h"
48 #include "lib/util/dlinklist.h"
49 #include "dsdb/samdb/ldb_modules/util.h"
50 #include "lib/util/binsearch.h"
51 #include "libcli/security/security.h"
52 #include "lib/util/tsort.h"
54 struct replmd_private {
56 struct la_entry *la_list;
58 struct la_backlink *la_backlinks;
60 struct nc_entry *prev, *next;
63 uint64_t mod_usn_urgent;
68 struct la_entry *next, *prev;
69 struct drsuapi_DsReplicaLinkedAttribute *la;
72 struct replmd_replicated_request {
73 struct ldb_module *module;
74 struct ldb_request *req;
76 const struct dsdb_schema *schema;
78 /* the controls we pass down */
79 struct ldb_control **controls;
81 /* details for the mode where we apply a bunch of inbound replication meessages */
83 uint32_t index_current;
84 struct dsdb_extended_replicated_objects *objs;
86 struct ldb_message *search_msg;
92 enum urgent_situation {
93 REPL_URGENT_ON_CREATE = 1,
94 REPL_URGENT_ON_UPDATE = 2,
95 REPL_URGENT_ON_DELETE = 4
100 const char *update_name;
101 enum urgent_situation repl_situation;
102 } urgent_objects[] = {
103 {"nTDSDSA", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_DELETE)},
104 {"crossRef", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_DELETE)},
105 {"attributeSchema", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
106 {"classSchema", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
107 {"secret", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
108 {"rIDManager", (REPL_URGENT_ON_CREATE | REPL_URGENT_ON_UPDATE)},
112 /* Attributes looked for when updating or deleting, to check for a urgent replication needed */
113 static const char *urgent_attrs[] = {
116 "userAccountControl",
121 static bool replmd_check_urgent_objectclass(const struct ldb_message_element *objectclass_el,
122 enum urgent_situation situation)
125 for (i=0; urgent_objects[i].update_name; i++) {
127 if ((situation & urgent_objects[i].repl_situation) == 0) {
131 for (j=0; j<objectclass_el->num_values; j++) {
132 const struct ldb_val *v = &objectclass_el->values[j];
133 if (ldb_attr_cmp((const char *)v->data, urgent_objects[i].update_name) == 0) {
141 static bool replmd_check_urgent_attribute(const struct ldb_message_element *el)
143 if (ldb_attr_in_list(urgent_attrs, el->name)) {
150 static int replmd_replicated_apply_next(struct replmd_replicated_request *ar);
153 initialise the module
154 allocate the private structure and build the list
155 of partition DNs for use by replmd_notify()
157 static int replmd_init(struct ldb_module *module)
159 struct replmd_private *replmd_private;
160 struct ldb_context *ldb = ldb_module_get_ctx(module);
162 replmd_private = talloc_zero(module, struct replmd_private);
163 if (replmd_private == NULL) {
165 return LDB_ERR_OPERATIONS_ERROR;
167 ldb_module_set_private(module, replmd_private);
169 return ldb_next_init(module);
173 cleanup our per-transaction contexts
175 static void replmd_txn_cleanup(struct replmd_private *replmd_private)
177 talloc_free(replmd_private->la_ctx);
178 replmd_private->la_list = NULL;
179 replmd_private->la_ctx = NULL;
181 talloc_free(replmd_private->bl_ctx);
182 replmd_private->la_backlinks = NULL;
183 replmd_private->bl_ctx = NULL;
188 struct la_backlink *next, *prev;
189 const char *attr_name;
190 struct GUID forward_guid, target_guid;
195 process a backlinks we accumulated during a transaction, adding and
196 deleting the backlinks from the target objects
198 static int replmd_process_backlink(struct ldb_module *module, struct la_backlink *bl)
200 struct ldb_dn *target_dn, *source_dn;
202 struct ldb_context *ldb = ldb_module_get_ctx(module);
203 struct ldb_message *msg;
204 TALLOC_CTX *tmp_ctx = talloc_new(bl);
210 - construct ldb_message
211 - either an add or a delete
213 ret = dsdb_module_dn_by_guid(module, tmp_ctx, &bl->target_guid, &target_dn);
214 if (ret != LDB_SUCCESS) {
215 DEBUG(2,(__location__ ": WARNING: Failed to find target DN for linked attribute with GUID %s\n",
216 GUID_string(bl, &bl->target_guid)));
220 ret = dsdb_module_dn_by_guid(module, tmp_ctx, &bl->forward_guid, &source_dn);
221 if (ret != LDB_SUCCESS) {
222 ldb_asprintf_errstring(ldb, "Failed to find source DN for linked attribute with GUID %s\n",
223 GUID_string(bl, &bl->forward_guid));
224 talloc_free(tmp_ctx);
228 msg = ldb_msg_new(tmp_ctx);
230 ldb_module_oom(module);
231 talloc_free(tmp_ctx);
232 return LDB_ERR_OPERATIONS_ERROR;
235 /* construct a ldb_message for adding/deleting the backlink */
237 dn_string = ldb_dn_get_extended_linearized(tmp_ctx, source_dn, 1);
239 ldb_module_oom(module);
240 talloc_free(tmp_ctx);
241 return LDB_ERR_OPERATIONS_ERROR;
243 ret = ldb_msg_add_steal_string(msg, bl->attr_name, dn_string);
244 if (ret != LDB_SUCCESS) {
245 talloc_free(tmp_ctx);
248 msg->elements[0].flags = bl->active?LDB_FLAG_MOD_ADD:LDB_FLAG_MOD_DELETE;
250 ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE);
251 if (ret != LDB_SUCCESS) {
252 ldb_asprintf_errstring(ldb, "Failed to %s backlink from %s to %s - %s",
253 bl->active?"add":"remove",
254 ldb_dn_get_linearized(source_dn),
255 ldb_dn_get_linearized(target_dn),
257 talloc_free(tmp_ctx);
260 talloc_free(tmp_ctx);
265 add a backlink to the list of backlinks to add/delete in the prepare
268 static int replmd_add_backlink(struct ldb_module *module, const struct dsdb_schema *schema,
269 struct GUID *forward_guid, struct GUID *target_guid,
270 bool active, const struct dsdb_attribute *schema_attr, bool immediate)
272 const struct dsdb_attribute *target_attr;
273 struct la_backlink *bl;
274 struct replmd_private *replmd_private =
275 talloc_get_type_abort(ldb_module_get_private(module), struct replmd_private);
277 target_attr = dsdb_attribute_by_linkID(schema, schema_attr->linkID ^ 1);
280 * windows 2003 has a broken schema where the
281 * definition of msDS-IsDomainFor is missing (which is
282 * supposed to be the backlink of the
283 * msDS-HasDomainNCs attribute
288 /* see if its already in the list */
289 for (bl=replmd_private->la_backlinks; bl; bl=bl->next) {
290 if (GUID_equal(forward_guid, &bl->forward_guid) &&
291 GUID_equal(target_guid, &bl->target_guid) &&
292 (target_attr->lDAPDisplayName == bl->attr_name ||
293 strcmp(target_attr->lDAPDisplayName, bl->attr_name) == 0)) {
299 /* we found an existing one */
300 if (bl->active == active) {
303 DLIST_REMOVE(replmd_private->la_backlinks, bl);
308 if (replmd_private->bl_ctx == NULL) {
309 replmd_private->bl_ctx = talloc_new(replmd_private);
310 if (replmd_private->bl_ctx == NULL) {
311 ldb_module_oom(module);
312 return LDB_ERR_OPERATIONS_ERROR;
317 bl = talloc(replmd_private->bl_ctx, struct la_backlink);
319 ldb_module_oom(module);
320 return LDB_ERR_OPERATIONS_ERROR;
323 /* Ensure the schema does not go away before the bl->attr_name is used */
324 if (!talloc_reference(bl, schema)) {
326 ldb_module_oom(module);
327 return LDB_ERR_OPERATIONS_ERROR;
330 bl->attr_name = target_attr->lDAPDisplayName;
331 bl->forward_guid = *forward_guid;
332 bl->target_guid = *target_guid;
335 /* the caller may ask for this backlink to be processed
338 int ret = replmd_process_backlink(module, bl);
343 DLIST_ADD(replmd_private->la_backlinks, bl);
350 * Callback for most write operations in this module:
352 * notify the repl task that a object has changed. The notifies are
353 * gathered up in the replmd_private structure then written to the
354 * @REPLCHANGED object in each partition during the prepare_commit
356 static int replmd_op_callback(struct ldb_request *req, struct ldb_reply *ares)
359 struct replmd_replicated_request *ac =
360 talloc_get_type_abort(req->context, struct replmd_replicated_request);
361 struct replmd_private *replmd_private =
362 talloc_get_type_abort(ldb_module_get_private(ac->module), struct replmd_private);
363 struct nc_entry *modified_partition;
364 struct ldb_control *partition_ctrl;
365 const struct dsdb_control_current_partition *partition;
367 struct ldb_control **controls;
369 partition_ctrl = ldb_reply_get_control(ares, DSDB_CONTROL_CURRENT_PARTITION_OID);
371 /* Remove the 'partition' control from what we pass up the chain */
372 controls = controls_except_specified(ares->controls, ares, partition_ctrl);
374 if (ares->error != LDB_SUCCESS) {
375 return ldb_module_done(ac->req, controls,
376 ares->response, ares->error);
379 if (ares->type != LDB_REPLY_DONE) {
380 ldb_set_errstring(ldb_module_get_ctx(ac->module), "Invalid reply type for notify\n!");
381 return ldb_module_done(ac->req, NULL,
382 NULL, LDB_ERR_OPERATIONS_ERROR);
385 if (!partition_ctrl) {
386 ldb_set_errstring(ldb_module_get_ctx(ac->module),"No partition control on reply");
387 return ldb_module_done(ac->req, NULL,
388 NULL, LDB_ERR_OPERATIONS_ERROR);
391 partition = talloc_get_type_abort(partition_ctrl->data,
392 struct dsdb_control_current_partition);
394 if (ac->seq_num > 0) {
395 for (modified_partition = replmd_private->ncs; modified_partition;
396 modified_partition = modified_partition->next) {
397 if (ldb_dn_compare(modified_partition->dn, partition->dn) == 0) {
402 if (modified_partition == NULL) {
403 modified_partition = talloc_zero(replmd_private, struct nc_entry);
404 if (!modified_partition) {
405 ldb_oom(ldb_module_get_ctx(ac->module));
406 return ldb_module_done(ac->req, NULL,
407 NULL, LDB_ERR_OPERATIONS_ERROR);
409 modified_partition->dn = ldb_dn_copy(modified_partition, partition->dn);
410 if (!modified_partition->dn) {
411 ldb_oom(ldb_module_get_ctx(ac->module));
412 return ldb_module_done(ac->req, NULL,
413 NULL, LDB_ERR_OPERATIONS_ERROR);
415 DLIST_ADD(replmd_private->ncs, modified_partition);
418 if (ac->seq_num > modified_partition->mod_usn) {
419 modified_partition->mod_usn = ac->seq_num;
421 modified_partition->mod_usn_urgent = ac->seq_num;
426 if (ac->apply_mode) {
430 ret = replmd_replicated_apply_next(ac);
431 if (ret != LDB_SUCCESS) {
432 return ldb_module_done(ac->req, NULL, NULL, ret);
436 /* free the partition control container here, for the
437 * common path. Other cases will have it cleaned up
438 * eventually with the ares */
439 talloc_free(partition_ctrl);
440 return ldb_module_done(ac->req,
441 controls_except_specified(controls, ares, partition_ctrl),
442 ares->response, LDB_SUCCESS);
448 * update a @REPLCHANGED record in each partition if there have been
449 * any writes of replicated data in the partition
451 static int replmd_notify_store(struct ldb_module *module)
453 struct replmd_private *replmd_private =
454 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
456 while (replmd_private->ncs) {
458 struct nc_entry *modified_partition = replmd_private->ncs;
460 ret = dsdb_module_save_partition_usn(module, modified_partition->dn,
461 modified_partition->mod_usn,
462 modified_partition->mod_usn_urgent);
463 if (ret != LDB_SUCCESS) {
464 DEBUG(0,(__location__ ": Failed to save partition uSN for %s\n",
465 ldb_dn_get_linearized(modified_partition->dn)));
468 DLIST_REMOVE(replmd_private->ncs, modified_partition);
469 talloc_free(modified_partition);
477 created a replmd_replicated_request context
479 static struct replmd_replicated_request *replmd_ctx_init(struct ldb_module *module,
480 struct ldb_request *req)
482 struct ldb_context *ldb;
483 struct replmd_replicated_request *ac;
485 ldb = ldb_module_get_ctx(module);
487 ac = talloc_zero(req, struct replmd_replicated_request);
496 ac->schema = dsdb_get_schema(ldb, ac);
498 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
499 "replmd_modify: no dsdb_schema loaded");
500 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
508 add a time element to a record
510 static int add_time_element(struct ldb_message *msg, const char *attr, time_t t)
512 struct ldb_message_element *el;
515 if (ldb_msg_find_element(msg, attr) != NULL) {
519 s = ldb_timestring(msg, t);
521 return LDB_ERR_OPERATIONS_ERROR;
524 if (ldb_msg_add_string(msg, attr, s) != LDB_SUCCESS) {
525 return LDB_ERR_OPERATIONS_ERROR;
528 el = ldb_msg_find_element(msg, attr);
529 /* always set as replace. This works because on add ops, the flag
531 el->flags = LDB_FLAG_MOD_REPLACE;
537 add a uint64_t element to a record
539 static int add_uint64_element(struct ldb_message *msg, const char *attr, uint64_t v)
541 struct ldb_message_element *el;
543 if (ldb_msg_find_element(msg, attr) != NULL) {
547 if (ldb_msg_add_fmt(msg, attr, "%llu", (unsigned long long)v) != LDB_SUCCESS) {
548 return LDB_ERR_OPERATIONS_ERROR;
551 el = ldb_msg_find_element(msg, attr);
552 /* always set as replace. This works because on add ops, the flag
554 el->flags = LDB_FLAG_MOD_REPLACE;
559 static int replmd_replPropertyMetaData1_attid_sort(const struct replPropertyMetaData1 *m1,
560 const struct replPropertyMetaData1 *m2,
561 const uint32_t *rdn_attid)
563 if (m1->attid == m2->attid) {
568 * the rdn attribute should be at the end!
569 * so we need to return a value greater than zero
570 * which means m1 is greater than m2
572 if (m1->attid == *rdn_attid) {
577 * the rdn attribute should be at the end!
578 * so we need to return a value less than zero
579 * which means m2 is greater than m1
581 if (m2->attid == *rdn_attid) {
585 return m1->attid > m2->attid ? 1 : -1;
588 static int replmd_replPropertyMetaDataCtr1_sort(struct replPropertyMetaDataCtr1 *ctr1,
589 const struct dsdb_schema *schema,
592 const char *rdn_name;
593 const struct dsdb_attribute *rdn_sa;
595 rdn_name = ldb_dn_get_rdn_name(dn);
597 DEBUG(0,(__location__ ": No rDN for %s?\n", ldb_dn_get_linearized(dn)));
598 return LDB_ERR_OPERATIONS_ERROR;
601 rdn_sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
602 if (rdn_sa == NULL) {
603 DEBUG(0,(__location__ ": No sa found for rDN %s for %s\n", rdn_name, ldb_dn_get_linearized(dn)));
604 return LDB_ERR_OPERATIONS_ERROR;
607 DEBUG(6,("Sorting rpmd with attid exception %u rDN=%s DN=%s\n",
608 rdn_sa->attributeID_id, rdn_name, ldb_dn_get_linearized(dn)));
610 LDB_TYPESAFE_QSORT(ctr1->array, ctr1->count, &rdn_sa->attributeID_id, replmd_replPropertyMetaData1_attid_sort);
615 static int replmd_ldb_message_element_attid_sort(const struct ldb_message_element *e1,
616 const struct ldb_message_element *e2,
617 const struct dsdb_schema *schema)
619 const struct dsdb_attribute *a1;
620 const struct dsdb_attribute *a2;
623 * TODO: make this faster by caching the dsdb_attribute pointer
624 * on the ldb_messag_element
627 a1 = dsdb_attribute_by_lDAPDisplayName(schema, e1->name);
628 a2 = dsdb_attribute_by_lDAPDisplayName(schema, e2->name);
631 * TODO: remove this check, we should rely on e1 and e2 having valid attribute names
635 return strcasecmp(e1->name, e2->name);
637 if (a1->attributeID_id == a2->attributeID_id) {
640 return a1->attributeID_id > a2->attributeID_id ? 1 : -1;
643 static void replmd_ldb_message_sort(struct ldb_message *msg,
644 const struct dsdb_schema *schema)
646 LDB_TYPESAFE_QSORT(msg->elements, msg->num_elements, schema, replmd_ldb_message_element_attid_sort);
649 static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
650 const struct GUID *invocation_id, uint64_t seq_num,
651 uint64_t local_usn, NTTIME nttime, uint32_t version, bool deleted);
655 fix up linked attributes in replmd_add.
656 This involves setting up the right meta-data in extended DN
657 components, and creating backlinks to the object
659 static int replmd_add_fix_la(struct ldb_module *module, struct ldb_message_element *el,
660 uint64_t seq_num, const struct GUID *invocationId, time_t t,
661 struct GUID *guid, const struct dsdb_attribute *sa)
664 TALLOC_CTX *tmp_ctx = talloc_new(el->values);
665 struct ldb_context *ldb = ldb_module_get_ctx(module);
667 /* We will take a reference to the schema in replmd_add_backlink */
668 const struct dsdb_schema *schema = dsdb_get_schema(ldb, NULL);
671 unix_to_nt_time(&now, t);
673 for (i=0; i<el->num_values; i++) {
674 struct ldb_val *v = &el->values[i];
675 struct dsdb_dn *dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, v, sa->syntax->ldap_oid);
676 struct GUID target_guid;
680 /* note that the DN already has the extended
681 components from the extended_dn_store module */
682 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &target_guid, "GUID");
683 if (!NT_STATUS_IS_OK(status) || GUID_all_zero(&target_guid)) {
684 ret = dsdb_module_guid_by_dn(module, dsdb_dn->dn, &target_guid);
685 if (ret != LDB_SUCCESS) {
686 talloc_free(tmp_ctx);
689 ret = dsdb_set_extended_dn_guid(dsdb_dn->dn, &target_guid, "GUID");
690 if (ret != LDB_SUCCESS) {
691 talloc_free(tmp_ctx);
696 ret = replmd_build_la_val(el->values, v, dsdb_dn, invocationId,
697 seq_num, seq_num, now, 0, false);
698 if (ret != LDB_SUCCESS) {
699 talloc_free(tmp_ctx);
703 ret = replmd_add_backlink(module, schema, guid, &target_guid, true, sa, false);
704 if (ret != LDB_SUCCESS) {
705 talloc_free(tmp_ctx);
710 talloc_free(tmp_ctx);
716 intercept add requests
718 static int replmd_add(struct ldb_module *module, struct ldb_request *req)
720 struct ldb_context *ldb;
721 struct ldb_control *control;
722 struct replmd_replicated_request *ac;
723 enum ndr_err_code ndr_err;
724 struct ldb_request *down_req;
725 struct ldb_message *msg;
726 const DATA_BLOB *guid_blob;
728 struct replPropertyMetaDataBlob nmd;
729 struct ldb_val nmd_value;
730 const struct GUID *our_invocation_id;
731 time_t t = time(NULL);
736 unsigned int functional_level;
738 bool allow_add_guid = false;
739 bool remove_current_guid = false;
740 bool is_urgent = false;
741 struct ldb_message_element *objectclass_el;
743 /* check if there's a show relax control (used by provision to say 'I know what I'm doing') */
744 control = ldb_request_get_control(req, LDB_CONTROL_RELAX_OID);
746 allow_add_guid = true;
749 /* do not manipulate our control entries */
750 if (ldb_dn_is_special(req->op.add.message->dn)) {
751 return ldb_next_request(module, req);
754 ldb = ldb_module_get_ctx(module);
756 functional_level = dsdb_functional_level(ldb);
758 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_add\n");
760 ac = replmd_ctx_init(module, req);
762 return LDB_ERR_OPERATIONS_ERROR;
765 guid_blob = ldb_msg_find_ldb_val(req->op.add.message, "objectGUID");
766 if ( guid_blob != NULL ) {
767 if( !allow_add_guid ) {
768 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
769 "replmd_add: it's not allowed to add an object with objectGUID\n");
771 return LDB_ERR_UNWILLING_TO_PERFORM;
773 NTSTATUS status = GUID_from_data_blob(guid_blob,&guid);
774 if ( !NT_STATUS_IS_OK(status)) {
775 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
776 "replmd_add: Unable to parse as a GUID the attribute objectGUID\n");
778 return LDB_ERR_UNWILLING_TO_PERFORM;
780 /* we remove this attribute as it can be a string and will not be treated
781 correctly and then we will readd it latter on in the good format*/
782 remove_current_guid = true;
786 guid = GUID_random();
789 /* Get a sequence number from the backend */
790 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ac->seq_num);
791 if (ret != LDB_SUCCESS) {
796 /* get our invocationId */
797 our_invocation_id = samdb_ntds_invocation_id(ldb);
798 if (!our_invocation_id) {
799 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
800 "replmd_add: unable to find invocationId\n");
802 return LDB_ERR_OPERATIONS_ERROR;
805 /* we have to copy the message as the caller might have it as a const */
806 msg = ldb_msg_copy_shallow(ac, req->op.add.message);
810 return LDB_ERR_OPERATIONS_ERROR;
813 /* generated times */
814 unix_to_nt_time(&now, t);
815 time_str = ldb_timestring(msg, t);
819 return LDB_ERR_OPERATIONS_ERROR;
821 if (remove_current_guid) {
822 ldb_msg_remove_attr(msg,"objectGUID");
826 * remove autogenerated attributes
828 ldb_msg_remove_attr(msg, "whenCreated");
829 ldb_msg_remove_attr(msg, "whenChanged");
830 ldb_msg_remove_attr(msg, "uSNCreated");
831 ldb_msg_remove_attr(msg, "uSNChanged");
832 ldb_msg_remove_attr(msg, "replPropertyMetaData");
835 * readd replicated attributes
837 ret = ldb_msg_add_string(msg, "whenCreated", time_str);
838 if (ret != LDB_SUCCESS) {
844 /* build the replication meta_data */
847 nmd.ctr.ctr1.count = msg->num_elements;
848 nmd.ctr.ctr1.array = talloc_array(msg,
849 struct replPropertyMetaData1,
851 if (!nmd.ctr.ctr1.array) {
854 return LDB_ERR_OPERATIONS_ERROR;
857 for (i=0; i < msg->num_elements; i++) {
858 struct ldb_message_element *e = &msg->elements[i];
859 struct replPropertyMetaData1 *m = &nmd.ctr.ctr1.array[ni];
860 const struct dsdb_attribute *sa;
862 if (e->name[0] == '@') continue;
864 sa = dsdb_attribute_by_lDAPDisplayName(ac->schema, e->name);
866 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
867 "replmd_add: attribute '%s' not defined in schema\n",
870 return LDB_ERR_NO_SUCH_ATTRIBUTE;
873 if ((sa->systemFlags & DS_FLAG_ATTR_NOT_REPLICATED) || (sa->systemFlags & DS_FLAG_ATTR_IS_CONSTRUCTED)) {
874 /* if the attribute is not replicated (0x00000001)
875 * or constructed (0x00000004) it has no metadata
880 if (sa->linkID != 0 && functional_level > DS_DOMAIN_FUNCTION_2000) {
881 ret = replmd_add_fix_la(module, e, ac->seq_num, our_invocation_id, t, &guid, sa);
882 if (ret != LDB_SUCCESS) {
886 /* linked attributes are not stored in
887 replPropertyMetaData in FL above w2k */
891 m->attid = sa->attributeID_id;
893 m->originating_change_time = now;
894 m->originating_invocation_id = *our_invocation_id;
895 m->originating_usn = ac->seq_num;
896 m->local_usn = ac->seq_num;
900 /* fix meta data count */
901 nmd.ctr.ctr1.count = ni;
904 * sort meta data array, and move the rdn attribute entry to the end
906 ret = replmd_replPropertyMetaDataCtr1_sort(&nmd.ctr.ctr1, ac->schema, msg->dn);
907 if (ret != LDB_SUCCESS) {
912 /* generated NDR encoded values */
913 ndr_err = ndr_push_struct_blob(&nmd_value, msg,
915 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
916 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
919 return LDB_ERR_OPERATIONS_ERROR;
923 * add the autogenerated values
925 ret = dsdb_msg_add_guid(msg, &guid, "objectGUID");
926 if (ret != LDB_SUCCESS) {
931 ret = ldb_msg_add_string(msg, "whenChanged", time_str);
932 if (ret != LDB_SUCCESS) {
937 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNCreated", ac->seq_num);
938 if (ret != LDB_SUCCESS) {
943 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ac->seq_num);
944 if (ret != LDB_SUCCESS) {
949 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &nmd_value, NULL);
950 if (ret != LDB_SUCCESS) {
957 * sort the attributes by attid before storing the object
959 replmd_ldb_message_sort(msg, ac->schema);
961 objectclass_el = ldb_msg_find_element(msg, "objectClass");
962 is_urgent = replmd_check_urgent_objectclass(objectclass_el,
963 REPL_URGENT_ON_CREATE);
965 ac->is_urgent = is_urgent;
966 ret = ldb_build_add_req(&down_req, ldb, ac,
969 ac, replmd_op_callback,
972 if (ret != LDB_SUCCESS) {
977 if (functional_level == DS_DOMAIN_FUNCTION_2000) {
978 ret = ldb_request_add_control(down_req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
979 if (ret != LDB_SUCCESS) {
985 /* mark the control done */
987 control->critical = 0;
990 /* go on with the call chain */
991 return ldb_next_request(module, down_req);
996 * update the replPropertyMetaData for one element
998 static int replmd_update_rpmd_element(struct ldb_context *ldb,
999 struct ldb_message *msg,
1000 struct ldb_message_element *el,
1001 struct ldb_message_element *old_el,
1002 struct replPropertyMetaDataBlob *omd,
1003 const struct dsdb_schema *schema,
1005 const struct GUID *our_invocation_id,
1009 const struct dsdb_attribute *a;
1010 struct replPropertyMetaData1 *md1;
1012 a = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
1014 DEBUG(0,(__location__ ": Unable to find attribute %s in schema\n",
1016 return LDB_ERR_OPERATIONS_ERROR;
1019 if ((a->systemFlags & DS_FLAG_ATTR_NOT_REPLICATED) || (a->systemFlags & DS_FLAG_ATTR_IS_CONSTRUCTED)) {
1023 /* if the attribute's value haven't changed then return LDB_SUCCESS */
1024 if (old_el != NULL && ldb_msg_element_compare(el, old_el) == 0) {
1028 for (i=0; i<omd->ctr.ctr1.count; i++) {
1029 if (a->attributeID_id == omd->ctr.ctr1.array[i].attid) break;
1032 if (a->linkID != 0 && dsdb_functional_level(ldb) > DS_DOMAIN_FUNCTION_2000) {
1033 /* linked attributes are not stored in
1034 replPropertyMetaData in FL above w2k, but we do
1035 raise the seqnum for the object */
1036 if (*seq_num == 0 &&
1037 ldb_sequence_number(ldb, LDB_SEQ_NEXT, seq_num) != LDB_SUCCESS) {
1038 return LDB_ERR_OPERATIONS_ERROR;
1043 if (i == omd->ctr.ctr1.count) {
1044 /* we need to add a new one */
1045 omd->ctr.ctr1.array = talloc_realloc(msg, omd->ctr.ctr1.array,
1046 struct replPropertyMetaData1, omd->ctr.ctr1.count+1);
1047 if (omd->ctr.ctr1.array == NULL) {
1049 return LDB_ERR_OPERATIONS_ERROR;
1051 omd->ctr.ctr1.count++;
1052 ZERO_STRUCT(omd->ctr.ctr1.array[i]);
1055 /* Get a new sequence number from the backend. We only do this
1056 * if we have a change that requires a new
1057 * replPropertyMetaData element
1059 if (*seq_num == 0) {
1060 int ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, seq_num);
1061 if (ret != LDB_SUCCESS) {
1062 return LDB_ERR_OPERATIONS_ERROR;
1066 md1 = &omd->ctr.ctr1.array[i];
1068 md1->attid = a->attributeID_id;
1069 md1->originating_change_time = now;
1070 md1->originating_invocation_id = *our_invocation_id;
1071 md1->originating_usn = *seq_num;
1072 md1->local_usn = *seq_num;
1077 static uint64_t find_max_local_usn(struct replPropertyMetaDataBlob omd)
1079 uint32_t count = omd.ctr.ctr1.count;
1082 for (i=0; i < count; i++) {
1083 struct replPropertyMetaData1 m = omd.ctr.ctr1.array[i];
1084 if (max < m.local_usn) {
1092 * update the replPropertyMetaData object each time we modify an
1093 * object. This is needed for DRS replication, as the merge on the
1094 * client is based on this object
1096 static int replmd_update_rpmd(struct ldb_module *module,
1097 const struct dsdb_schema *schema,
1098 struct ldb_request *req,
1099 struct ldb_message *msg, uint64_t *seq_num,
1103 const struct ldb_val *omd_value;
1104 enum ndr_err_code ndr_err;
1105 struct replPropertyMetaDataBlob omd;
1108 const struct GUID *our_invocation_id;
1110 const char *attrs[] = { "replPropertyMetaData", "*", NULL };
1111 const char *attrs2[] = { "uSNChanged", "objectClass", NULL };
1112 struct ldb_result *res;
1113 struct ldb_context *ldb;
1114 struct ldb_message_element *objectclass_el;
1115 enum urgent_situation situation;
1116 bool rodc, rmd_is_provided;
1118 ldb = ldb_module_get_ctx(module);
1120 our_invocation_id = samdb_ntds_invocation_id(ldb);
1121 if (!our_invocation_id) {
1122 /* this happens during an initial vampire while
1123 updating the schema */
1124 DEBUG(5,("No invocationID - skipping replPropertyMetaData update\n"));
1128 unix_to_nt_time(&now, t);
1130 if (ldb_request_get_control(req, DSDB_CONTROL_CHANGEREPLMETADATA_OID)) {
1131 rmd_is_provided = true;
1133 rmd_is_provided = false;
1136 /* if isDeleted is present and is TRUE, then we consider we are deleting,
1137 * otherwise we consider we are updating */
1138 if (ldb_msg_check_string_attribute(msg, "isDeleted", "TRUE")) {
1139 situation = REPL_URGENT_ON_DELETE;
1141 situation = REPL_URGENT_ON_UPDATE;
1144 if (rmd_is_provided) {
1145 /* In this case the change_replmetadata control was supplied */
1146 /* We check that it's the only attribute that is provided
1147 * (it's a rare case so it's better to keep the code simplier)
1148 * We also check that the highest local_usn is bigger than
1151 if( msg->num_elements != 1 ||
1152 strncmp(msg->elements[0].name,
1153 "replPropertyMetaData", 20) ) {
1154 DEBUG(0,(__location__ ": changereplmetada control called without "\
1155 "a specified replPropertyMetaData attribute or with others\n"));
1156 return LDB_ERR_OPERATIONS_ERROR;
1158 if (situation == REPL_URGENT_ON_DELETE) {
1159 DEBUG(0,(__location__ ": changereplmetada control can't be called when deleting an object\n"));
1160 return LDB_ERR_OPERATIONS_ERROR;
1162 omd_value = ldb_msg_find_ldb_val(msg, "replPropertyMetaData");
1164 DEBUG(0,(__location__ ": replPropertyMetaData was not specified for Object %s\n",
1165 ldb_dn_get_linearized(msg->dn)));
1166 return LDB_ERR_OPERATIONS_ERROR;
1168 ndr_err = ndr_pull_struct_blob(omd_value, msg, &omd,
1169 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
1170 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1171 DEBUG(0,(__location__ ": Failed to parse replPropertyMetaData for %s\n",
1172 ldb_dn_get_linearized(msg->dn)));
1173 return LDB_ERR_OPERATIONS_ERROR;
1175 *seq_num = find_max_local_usn(omd);
1177 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, attrs2,
1178 DSDB_FLAG_NEXT_MODULE |
1179 DSDB_SEARCH_SHOW_DELETED |
1180 DSDB_SEARCH_SHOW_EXTENDED_DN |
1181 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
1182 DSDB_SEARCH_REVEAL_INTERNALS);
1184 if (ret != LDB_SUCCESS || res->count != 1) {
1185 DEBUG(0,(__location__ ": Object %s failed to find uSNChanged\n",
1186 ldb_dn_get_linearized(msg->dn)));
1187 return LDB_ERR_OPERATIONS_ERROR;
1190 objectclass_el = ldb_msg_find_element(res->msgs[0], "objectClass");
1191 if (is_urgent && replmd_check_urgent_objectclass(objectclass_el,
1196 db_seq = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNChanged", 0);
1197 if (*seq_num <= db_seq) {
1198 DEBUG(0,(__location__ ": changereplmetada control provided but max(local_usn)"\
1199 " is less or equal to uSNChanged (max = %lld uSNChanged = %lld)\n",
1201 return LDB_ERR_OPERATIONS_ERROR;
1205 /* search for the existing replPropertyMetaDataBlob. We need
1206 * to use REVEAL and ask for DNs in storage format to support
1207 * the check for values being the same in
1208 * replmd_update_rpmd_element()
1210 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, attrs,
1211 DSDB_FLAG_NEXT_MODULE |
1212 DSDB_SEARCH_SHOW_DELETED |
1213 DSDB_SEARCH_SHOW_EXTENDED_DN |
1214 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
1215 DSDB_SEARCH_REVEAL_INTERNALS);
1216 if (ret != LDB_SUCCESS || res->count != 1) {
1217 DEBUG(0,(__location__ ": Object %s failed to find replPropertyMetaData\n",
1218 ldb_dn_get_linearized(msg->dn)));
1219 return LDB_ERR_OPERATIONS_ERROR;
1222 objectclass_el = ldb_msg_find_element(res->msgs[0], "objectClass");
1223 if (is_urgent && replmd_check_urgent_objectclass(objectclass_el,
1228 omd_value = ldb_msg_find_ldb_val(res->msgs[0], "replPropertyMetaData");
1230 DEBUG(0,(__location__ ": Object %s does not have a replPropertyMetaData attribute\n",
1231 ldb_dn_get_linearized(msg->dn)));
1232 return LDB_ERR_OPERATIONS_ERROR;
1235 ndr_err = ndr_pull_struct_blob(omd_value, msg, &omd,
1236 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
1237 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1238 DEBUG(0,(__location__ ": Failed to parse replPropertyMetaData for %s\n",
1239 ldb_dn_get_linearized(msg->dn)));
1240 return LDB_ERR_OPERATIONS_ERROR;
1243 if (omd.version != 1) {
1244 DEBUG(0,(__location__ ": bad version %u in replPropertyMetaData for %s\n",
1245 omd.version, ldb_dn_get_linearized(msg->dn)));
1246 return LDB_ERR_OPERATIONS_ERROR;
1249 /*we have elements that will be modified*/
1250 if (msg->num_elements > 0) {
1251 /*if we are RODC and this is a DRSR update then its ok*/
1252 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1253 ret = samdb_rodc(ldb, &rodc);
1254 if (ret != LDB_SUCCESS) {
1255 DEBUG(4, (__location__ ": unable to tell if we are an RODC\n"));
1257 ldb_asprintf_errstring(ldb, "RODC modify is forbidden\n");
1258 return LDB_ERR_REFERRAL;
1263 for (i=0; i<msg->num_elements; i++) {
1264 struct ldb_message_element *old_el;
1265 old_el = ldb_msg_find_element(res->msgs[0], msg->elements[i].name);
1266 ret = replmd_update_rpmd_element(ldb, msg, &msg->elements[i], old_el, &omd, schema, seq_num,
1267 our_invocation_id, now);
1268 if (ret != LDB_SUCCESS) {
1272 if (is_urgent && !*is_urgent && (situation == REPL_URGENT_ON_UPDATE)) {
1273 *is_urgent = replmd_check_urgent_attribute(&msg->elements[i]);
1279 * replmd_update_rpmd_element has done an update if the
1282 if (*seq_num != 0) {
1283 struct ldb_val *md_value;
1284 struct ldb_message_element *el;
1286 md_value = talloc(msg, struct ldb_val);
1287 if (md_value == NULL) {
1289 return LDB_ERR_OPERATIONS_ERROR;
1292 ret = replmd_replPropertyMetaDataCtr1_sort(&omd.ctr.ctr1, schema, msg->dn);
1293 if (ret != LDB_SUCCESS) {
1297 ndr_err = ndr_push_struct_blob(md_value, msg, &omd,
1298 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
1299 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1300 DEBUG(0,(__location__ ": Failed to marshall replPropertyMetaData for %s\n",
1301 ldb_dn_get_linearized(msg->dn)));
1302 return LDB_ERR_OPERATIONS_ERROR;
1305 ret = ldb_msg_add_empty(msg, "replPropertyMetaData", LDB_FLAG_MOD_REPLACE, &el);
1306 if (ret != LDB_SUCCESS) {
1307 DEBUG(0,(__location__ ": Failed to add updated replPropertyMetaData %s\n",
1308 ldb_dn_get_linearized(msg->dn)));
1313 el->values = md_value;
1320 struct dsdb_dn *dsdb_dn;
1325 static int parsed_dn_compare(struct parsed_dn *pdn1, struct parsed_dn *pdn2)
1327 return GUID_compare(pdn1->guid, pdn2->guid);
1330 static struct parsed_dn *parsed_dn_find(struct parsed_dn *pdn, int count, struct GUID *guid, struct ldb_dn *dn)
1332 struct parsed_dn *ret;
1333 if (dn && GUID_all_zero(guid)) {
1334 /* when updating a link using DRS, we sometimes get a
1335 NULL GUID. We then need to try and match by DN */
1337 for (i=0; i<count; i++) {
1338 if (ldb_dn_compare(pdn[i].dsdb_dn->dn, dn) == 0) {
1339 dsdb_get_extended_dn_guid(pdn[i].dsdb_dn->dn, guid, "GUID");
1345 BINARY_ARRAY_SEARCH(pdn, count, guid, guid, GUID_compare, ret);
1350 get a series of message element values as an array of DNs and GUIDs
1351 the result is sorted by GUID
1353 static int get_parsed_dns(struct ldb_module *module, TALLOC_CTX *mem_ctx,
1354 struct ldb_message_element *el, struct parsed_dn **pdn,
1355 const char *ldap_oid)
1358 struct ldb_context *ldb = ldb_module_get_ctx(module);
1365 (*pdn) = talloc_array(mem_ctx, struct parsed_dn, el->num_values);
1367 ldb_module_oom(module);
1368 return LDB_ERR_OPERATIONS_ERROR;
1371 for (i=0; i<el->num_values; i++) {
1372 struct ldb_val *v = &el->values[i];
1375 struct parsed_dn *p;
1379 p->dsdb_dn = dsdb_dn_parse(*pdn, ldb, v, ldap_oid);
1380 if (p->dsdb_dn == NULL) {
1381 return LDB_ERR_INVALID_DN_SYNTAX;
1384 dn = p->dsdb_dn->dn;
1386 p->guid = talloc(*pdn, struct GUID);
1387 if (p->guid == NULL) {
1388 ldb_module_oom(module);
1389 return LDB_ERR_OPERATIONS_ERROR;
1392 status = dsdb_get_extended_dn_guid(dn, p->guid, "GUID");
1393 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1394 /* we got a DN without a GUID - go find the GUID */
1395 int ret = dsdb_module_guid_by_dn(module, dn, p->guid);
1396 if (ret != LDB_SUCCESS) {
1397 ldb_asprintf_errstring(ldb, "Unable to find GUID for DN %s\n",
1398 ldb_dn_get_linearized(dn));
1401 ret = dsdb_set_extended_dn_guid(dn, p->guid, "GUID");
1402 if (ret != LDB_SUCCESS) {
1405 } else if (!NT_STATUS_IS_OK(status)) {
1406 return LDB_ERR_OPERATIONS_ERROR;
1409 /* keep a pointer to the original ldb_val */
1413 TYPESAFE_QSORT(*pdn, el->num_values, parsed_dn_compare);
1419 build a new extended DN, including all meta data fields
1421 RMD_FLAGS = DSDB_RMD_FLAG_* bits
1422 RMD_ADDTIME = originating_add_time
1423 RMD_INVOCID = originating_invocation_id
1424 RMD_CHANGETIME = originating_change_time
1425 RMD_ORIGINATING_USN = originating_usn
1426 RMD_LOCAL_USN = local_usn
1427 RMD_VERSION = version
1429 static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1430 const struct GUID *invocation_id, uint64_t seq_num,
1431 uint64_t local_usn, NTTIME nttime, uint32_t version, bool deleted)
1433 struct ldb_dn *dn = dsdb_dn->dn;
1434 const char *tstring, *usn_string, *flags_string;
1435 struct ldb_val tval;
1437 struct ldb_val usnv, local_usnv;
1438 struct ldb_val vers, flagsv;
1441 const char *dnstring;
1443 uint32_t rmd_flags = deleted?DSDB_RMD_FLAG_DELETED:0;
1445 tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)nttime);
1447 return LDB_ERR_OPERATIONS_ERROR;
1449 tval = data_blob_string_const(tstring);
1451 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)seq_num);
1453 return LDB_ERR_OPERATIONS_ERROR;
1455 usnv = data_blob_string_const(usn_string);
1457 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)local_usn);
1459 return LDB_ERR_OPERATIONS_ERROR;
1461 local_usnv = data_blob_string_const(usn_string);
1463 vstring = talloc_asprintf(mem_ctx, "%lu", (unsigned long)version);
1465 return LDB_ERR_OPERATIONS_ERROR;
1467 vers = data_blob_string_const(vstring);
1469 status = GUID_to_ndr_blob(invocation_id, dn, &iid);
1470 if (!NT_STATUS_IS_OK(status)) {
1471 return LDB_ERR_OPERATIONS_ERROR;
1474 flags_string = talloc_asprintf(mem_ctx, "%u", rmd_flags);
1475 if (!flags_string) {
1476 return LDB_ERR_OPERATIONS_ERROR;
1478 flagsv = data_blob_string_const(flags_string);
1480 ret = ldb_dn_set_extended_component(dn, "RMD_FLAGS", &flagsv);
1481 if (ret != LDB_SUCCESS) return ret;
1482 ret = ldb_dn_set_extended_component(dn, "RMD_ADDTIME", &tval);
1483 if (ret != LDB_SUCCESS) return ret;
1484 ret = ldb_dn_set_extended_component(dn, "RMD_INVOCID", &iid);
1485 if (ret != LDB_SUCCESS) return ret;
1486 ret = ldb_dn_set_extended_component(dn, "RMD_CHANGETIME", &tval);
1487 if (ret != LDB_SUCCESS) return ret;
1488 ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &local_usnv);
1489 if (ret != LDB_SUCCESS) return ret;
1490 ret = ldb_dn_set_extended_component(dn, "RMD_ORIGINATING_USN", &usnv);
1491 if (ret != LDB_SUCCESS) return ret;
1492 ret = ldb_dn_set_extended_component(dn, "RMD_VERSION", &vers);
1493 if (ret != LDB_SUCCESS) return ret;
1495 dnstring = dsdb_dn_get_extended_linearized(mem_ctx, dsdb_dn, 1);
1496 if (dnstring == NULL) {
1497 return LDB_ERR_OPERATIONS_ERROR;
1499 *v = data_blob_string_const(dnstring);
1504 static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1505 struct dsdb_dn *old_dsdb_dn, const struct GUID *invocation_id,
1506 uint64_t seq_num, uint64_t local_usn, NTTIME nttime,
1507 uint32_t version, bool deleted);
1510 check if any links need upgrading from w2k format
1512 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.
1514 static int replmd_check_upgrade_links(struct parsed_dn *dns, uint32_t count, struct ldb_message_element *parent_ctx, const struct GUID *invocation_id)
1517 for (i=0; i<count; i++) {
1522 status = dsdb_get_extended_dn_uint32(dns[i].dsdb_dn->dn, &version, "RMD_VERSION");
1523 if (!NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1527 /* it's an old one that needs upgrading */
1528 ret = replmd_update_la_val(parent_ctx->values, dns[i].v, dns[i].dsdb_dn, dns[i].dsdb_dn, invocation_id,
1530 if (ret != LDB_SUCCESS) {
1538 update an extended DN, including all meta data fields
1540 see replmd_build_la_val for value names
1542 static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
1543 struct dsdb_dn *old_dsdb_dn, const struct GUID *invocation_id,
1544 uint64_t seq_num, uint64_t local_usn, NTTIME nttime,
1545 uint32_t version, bool deleted)
1547 struct ldb_dn *dn = dsdb_dn->dn;
1548 const char *tstring, *usn_string, *flags_string;
1549 struct ldb_val tval;
1551 struct ldb_val usnv, local_usnv;
1552 struct ldb_val vers, flagsv;
1553 const struct ldb_val *old_addtime;
1554 uint32_t old_version;
1557 const char *dnstring;
1559 uint32_t rmd_flags = deleted?DSDB_RMD_FLAG_DELETED:0;
1561 tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)nttime);
1563 return LDB_ERR_OPERATIONS_ERROR;
1565 tval = data_blob_string_const(tstring);
1567 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)seq_num);
1569 return LDB_ERR_OPERATIONS_ERROR;
1571 usnv = data_blob_string_const(usn_string);
1573 usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)local_usn);
1575 return LDB_ERR_OPERATIONS_ERROR;
1577 local_usnv = data_blob_string_const(usn_string);
1579 status = GUID_to_ndr_blob(invocation_id, dn, &iid);
1580 if (!NT_STATUS_IS_OK(status)) {
1581 return LDB_ERR_OPERATIONS_ERROR;
1584 flags_string = talloc_asprintf(mem_ctx, "%u", rmd_flags);
1585 if (!flags_string) {
1586 return LDB_ERR_OPERATIONS_ERROR;
1588 flagsv = data_blob_string_const(flags_string);
1590 ret = ldb_dn_set_extended_component(dn, "RMD_FLAGS", &flagsv);
1591 if (ret != LDB_SUCCESS) return ret;
1593 /* get the ADDTIME from the original */
1594 old_addtime = ldb_dn_get_extended_component(old_dsdb_dn->dn, "RMD_ADDTIME");
1595 if (old_addtime == NULL) {
1596 old_addtime = &tval;
1598 if (dsdb_dn != old_dsdb_dn) {
1599 ret = ldb_dn_set_extended_component(dn, "RMD_ADDTIME", old_addtime);
1600 if (ret != LDB_SUCCESS) return ret;
1603 /* use our invocation id */
1604 ret = ldb_dn_set_extended_component(dn, "RMD_INVOCID", &iid);
1605 if (ret != LDB_SUCCESS) return ret;
1607 /* changetime is the current time */
1608 ret = ldb_dn_set_extended_component(dn, "RMD_CHANGETIME", &tval);
1609 if (ret != LDB_SUCCESS) return ret;
1611 /* update the USN */
1612 ret = ldb_dn_set_extended_component(dn, "RMD_ORIGINATING_USN", &usnv);
1613 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;
1618 /* increase the version by 1 */
1619 status = dsdb_get_extended_dn_uint32(old_dsdb_dn->dn, &old_version, "RMD_VERSION");
1620 if (NT_STATUS_IS_OK(status) && old_version >= version) {
1621 version = old_version+1;
1623 vstring = talloc_asprintf(dn, "%lu", (unsigned long)version);
1624 vers = data_blob_string_const(vstring);
1625 ret = ldb_dn_set_extended_component(dn, "RMD_VERSION", &vers);
1626 if (ret != LDB_SUCCESS) return ret;
1628 dnstring = dsdb_dn_get_extended_linearized(mem_ctx, dsdb_dn, 1);
1629 if (dnstring == NULL) {
1630 return LDB_ERR_OPERATIONS_ERROR;
1632 *v = data_blob_string_const(dnstring);
1638 handle adding a linked attribute
1640 static int replmd_modify_la_add(struct ldb_module *module,
1641 const struct dsdb_schema *schema,
1642 struct ldb_message *msg,
1643 struct ldb_message_element *el,
1644 struct ldb_message_element *old_el,
1645 const struct dsdb_attribute *schema_attr,
1648 struct GUID *msg_guid)
1651 struct parsed_dn *dns, *old_dns;
1652 TALLOC_CTX *tmp_ctx = talloc_new(msg);
1654 struct ldb_val *new_values = NULL;
1655 unsigned int num_new_values = 0;
1656 unsigned old_num_values = old_el?old_el->num_values:0;
1657 const struct GUID *invocation_id;
1658 struct ldb_context *ldb = ldb_module_get_ctx(module);
1661 unix_to_nt_time(&now, t);
1663 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid);
1664 if (ret != LDB_SUCCESS) {
1665 talloc_free(tmp_ctx);
1669 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid);
1670 if (ret != LDB_SUCCESS) {
1671 talloc_free(tmp_ctx);
1675 invocation_id = samdb_ntds_invocation_id(ldb);
1676 if (!invocation_id) {
1677 talloc_free(tmp_ctx);
1678 return LDB_ERR_OPERATIONS_ERROR;
1681 ret = replmd_check_upgrade_links(old_dns, old_num_values, old_el, invocation_id);
1682 if (ret != LDB_SUCCESS) {
1683 talloc_free(tmp_ctx);
1687 /* for each new value, see if it exists already with the same GUID */
1688 for (i=0; i<el->num_values; i++) {
1689 struct parsed_dn *p = parsed_dn_find(old_dns, old_num_values, dns[i].guid, NULL);
1691 /* this is a new linked attribute value */
1692 new_values = talloc_realloc(tmp_ctx, new_values, struct ldb_val, num_new_values+1);
1693 if (new_values == NULL) {
1694 ldb_module_oom(module);
1695 talloc_free(tmp_ctx);
1696 return LDB_ERR_OPERATIONS_ERROR;
1698 ret = replmd_build_la_val(new_values, &new_values[num_new_values], dns[i].dsdb_dn,
1699 invocation_id, seq_num, seq_num, now, 0, false);
1700 if (ret != LDB_SUCCESS) {
1701 talloc_free(tmp_ctx);
1706 /* this is only allowed if the GUID was
1707 previously deleted. */
1708 uint32_t rmd_flags = dsdb_dn_rmd_flags(p->dsdb_dn->dn);
1710 if (!(rmd_flags & DSDB_RMD_FLAG_DELETED)) {
1711 ldb_asprintf_errstring(ldb, "Attribute %s already exists for target GUID %s",
1712 el->name, GUID_string(tmp_ctx, p->guid));
1713 talloc_free(tmp_ctx);
1714 return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
1716 ret = replmd_update_la_val(old_el->values, p->v, dns[i].dsdb_dn, p->dsdb_dn,
1717 invocation_id, seq_num, seq_num, now, 0, false);
1718 if (ret != LDB_SUCCESS) {
1719 talloc_free(tmp_ctx);
1724 ret = replmd_add_backlink(module, schema, msg_guid, dns[i].guid, true, schema_attr, true);
1725 if (ret != LDB_SUCCESS) {
1726 talloc_free(tmp_ctx);
1731 /* add the new ones on to the end of the old values, constructing a new el->values */
1732 el->values = talloc_realloc(msg->elements, old_el?old_el->values:NULL,
1734 old_num_values+num_new_values);
1735 if (el->values == NULL) {
1736 ldb_module_oom(module);
1737 return LDB_ERR_OPERATIONS_ERROR;
1740 memcpy(&el->values[old_num_values], new_values, num_new_values*sizeof(struct ldb_val));
1741 el->num_values = old_num_values + num_new_values;
1743 talloc_steal(msg->elements, el->values);
1744 talloc_steal(el->values, new_values);
1746 talloc_free(tmp_ctx);
1748 /* we now tell the backend to replace all existing values
1749 with the one we have constructed */
1750 el->flags = LDB_FLAG_MOD_REPLACE;
1757 handle deleting all active linked attributes
1759 static int replmd_modify_la_delete(struct ldb_module *module,
1760 const struct dsdb_schema *schema,
1761 struct ldb_message *msg,
1762 struct ldb_message_element *el,
1763 struct ldb_message_element *old_el,
1764 const struct dsdb_attribute *schema_attr,
1767 struct GUID *msg_guid)
1770 struct parsed_dn *dns, *old_dns;
1771 TALLOC_CTX *tmp_ctx = talloc_new(msg);
1773 const struct GUID *invocation_id;
1774 struct ldb_context *ldb = ldb_module_get_ctx(module);
1777 unix_to_nt_time(&now, t);
1779 /* check if there is nothing to delete */
1780 if ((!old_el || old_el->num_values == 0) &&
1781 el->num_values == 0) {
1785 if (!old_el || old_el->num_values == 0) {
1786 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1789 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid);
1790 if (ret != LDB_SUCCESS) {
1791 talloc_free(tmp_ctx);
1795 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid);
1796 if (ret != LDB_SUCCESS) {
1797 talloc_free(tmp_ctx);
1801 invocation_id = samdb_ntds_invocation_id(ldb);
1802 if (!invocation_id) {
1803 return LDB_ERR_OPERATIONS_ERROR;
1806 ret = replmd_check_upgrade_links(old_dns, old_el->num_values, old_el, invocation_id);
1807 if (ret != LDB_SUCCESS) {
1808 talloc_free(tmp_ctx);
1814 /* see if we are being asked to delete any links that
1815 don't exist or are already deleted */
1816 for (i=0; i<el->num_values; i++) {
1817 struct parsed_dn *p = &dns[i];
1818 struct parsed_dn *p2;
1821 p2 = parsed_dn_find(old_dns, old_el->num_values, p->guid, NULL);
1823 ldb_asprintf_errstring(ldb, "Attribute %s doesn't exist for target GUID %s",
1824 el->name, GUID_string(tmp_ctx, p->guid));
1825 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1827 rmd_flags = dsdb_dn_rmd_flags(p2->dsdb_dn->dn);
1828 if (rmd_flags & DSDB_RMD_FLAG_DELETED) {
1829 ldb_asprintf_errstring(ldb, "Attribute %s already deleted for target GUID %s",
1830 el->name, GUID_string(tmp_ctx, p->guid));
1831 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1835 /* for each new value, see if it exists already with the same GUID
1836 if it is not already deleted and matches the delete list then delete it
1838 for (i=0; i<old_el->num_values; i++) {
1839 struct parsed_dn *p = &old_dns[i];
1842 if (el->num_values && parsed_dn_find(dns, el->num_values, p->guid, NULL) == NULL) {
1846 rmd_flags = dsdb_dn_rmd_flags(p->dsdb_dn->dn);
1847 if (rmd_flags & DSDB_RMD_FLAG_DELETED) continue;
1849 ret = replmd_update_la_val(old_el->values, p->v, p->dsdb_dn, p->dsdb_dn,
1850 invocation_id, seq_num, seq_num, now, 0, true);
1851 if (ret != LDB_SUCCESS) {
1852 talloc_free(tmp_ctx);
1856 ret = replmd_add_backlink(module, schema, msg_guid, old_dns[i].guid, false, schema_attr, true);
1857 if (ret != LDB_SUCCESS) {
1858 talloc_free(tmp_ctx);
1863 el->values = talloc_steal(msg->elements, old_el->values);
1864 el->num_values = old_el->num_values;
1866 talloc_free(tmp_ctx);
1868 /* we now tell the backend to replace all existing values
1869 with the one we have constructed */
1870 el->flags = LDB_FLAG_MOD_REPLACE;
1876 handle replacing a linked attribute
1878 static int replmd_modify_la_replace(struct ldb_module *module,
1879 const struct dsdb_schema *schema,
1880 struct ldb_message *msg,
1881 struct ldb_message_element *el,
1882 struct ldb_message_element *old_el,
1883 const struct dsdb_attribute *schema_attr,
1886 struct GUID *msg_guid)
1889 struct parsed_dn *dns, *old_dns;
1890 TALLOC_CTX *tmp_ctx = talloc_new(msg);
1892 const struct GUID *invocation_id;
1893 struct ldb_context *ldb = ldb_module_get_ctx(module);
1894 struct ldb_val *new_values = NULL;
1895 unsigned int num_new_values = 0;
1896 unsigned int old_num_values = old_el?old_el->num_values:0;
1899 unix_to_nt_time(&now, t);
1901 /* check if there is nothing to replace */
1902 if ((!old_el || old_el->num_values == 0) &&
1903 el->num_values == 0) {
1907 ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid);
1908 if (ret != LDB_SUCCESS) {
1909 talloc_free(tmp_ctx);
1913 ret = get_parsed_dns(module, tmp_ctx, old_el, &old_dns, schema_attr->syntax->ldap_oid);
1914 if (ret != LDB_SUCCESS) {
1915 talloc_free(tmp_ctx);
1919 invocation_id = samdb_ntds_invocation_id(ldb);
1920 if (!invocation_id) {
1921 return LDB_ERR_OPERATIONS_ERROR;
1924 ret = replmd_check_upgrade_links(old_dns, old_num_values, old_el, invocation_id);
1925 if (ret != LDB_SUCCESS) {
1926 talloc_free(tmp_ctx);
1930 /* mark all the old ones as deleted */
1931 for (i=0; i<old_num_values; i++) {
1932 struct parsed_dn *old_p = &old_dns[i];
1933 struct parsed_dn *p;
1934 uint32_t rmd_flags = dsdb_dn_rmd_flags(old_p->dsdb_dn->dn);
1936 if (rmd_flags & DSDB_RMD_FLAG_DELETED) continue;
1938 ret = replmd_add_backlink(module, schema, msg_guid, old_dns[i].guid, false, schema_attr, false);
1939 if (ret != LDB_SUCCESS) {
1940 talloc_free(tmp_ctx);
1944 p = parsed_dn_find(dns, el->num_values, old_p->guid, NULL);
1946 /* we don't delete it if we are re-adding it */
1950 ret = replmd_update_la_val(old_el->values, old_p->v, old_p->dsdb_dn, old_p->dsdb_dn,
1951 invocation_id, seq_num, seq_num, now, 0, true);
1952 if (ret != LDB_SUCCESS) {
1953 talloc_free(tmp_ctx);
1958 /* for each new value, either update its meta-data, or add it
1961 for (i=0; i<el->num_values; i++) {
1962 struct parsed_dn *p = &dns[i], *old_p;
1965 (old_p = parsed_dn_find(old_dns,
1966 old_num_values, p->guid, NULL)) != NULL) {
1967 /* update in place */
1968 ret = replmd_update_la_val(old_el->values, old_p->v, old_p->dsdb_dn,
1969 old_p->dsdb_dn, invocation_id,
1970 seq_num, seq_num, now, 0, false);
1971 if (ret != LDB_SUCCESS) {
1972 talloc_free(tmp_ctx);
1977 new_values = talloc_realloc(tmp_ctx, new_values, struct ldb_val,
1979 if (new_values == NULL) {
1980 ldb_module_oom(module);
1981 talloc_free(tmp_ctx);
1982 return LDB_ERR_OPERATIONS_ERROR;
1984 ret = replmd_build_la_val(new_values, &new_values[num_new_values], dns[i].dsdb_dn,
1985 invocation_id, seq_num, seq_num, now, 0, false);
1986 if (ret != LDB_SUCCESS) {
1987 talloc_free(tmp_ctx);
1993 ret = replmd_add_backlink(module, schema, msg_guid, dns[i].guid, true, schema_attr, false);
1994 if (ret != LDB_SUCCESS) {
1995 talloc_free(tmp_ctx);
2000 /* add the new values to the end of old_el */
2001 if (num_new_values != 0) {
2002 el->values = talloc_realloc(msg->elements, old_el?old_el->values:NULL,
2003 struct ldb_val, old_num_values+num_new_values);
2004 if (el->values == NULL) {
2005 ldb_module_oom(module);
2006 return LDB_ERR_OPERATIONS_ERROR;
2008 memcpy(&el->values[old_num_values], &new_values[0],
2009 sizeof(struct ldb_val)*num_new_values);
2010 el->num_values = old_num_values + num_new_values;
2011 talloc_steal(msg->elements, new_values);
2013 el->values = old_el->values;
2014 el->num_values = old_el->num_values;
2015 talloc_steal(msg->elements, el->values);
2018 talloc_free(tmp_ctx);
2020 /* we now tell the backend to replace all existing values
2021 with the one we have constructed */
2022 el->flags = LDB_FLAG_MOD_REPLACE;
2029 handle linked attributes in modify requests
2031 static int replmd_modify_handle_linked_attribs(struct ldb_module *module,
2032 struct ldb_message *msg,
2033 uint64_t seq_num, time_t t)
2035 struct ldb_result *res;
2038 struct ldb_context *ldb = ldb_module_get_ctx(module);
2039 struct ldb_message *old_msg;
2041 const struct dsdb_schema *schema;
2042 struct GUID old_guid;
2045 /* there the replmd_update_rpmd code has already
2046 * checked and saw that there are no linked
2051 if (dsdb_functional_level(ldb) == DS_DOMAIN_FUNCTION_2000) {
2052 /* don't do anything special for linked attributes */
2056 ret = dsdb_module_search_dn(module, msg, &res, msg->dn, NULL,
2057 DSDB_FLAG_NEXT_MODULE |
2058 DSDB_SEARCH_SHOW_DELETED |
2059 DSDB_SEARCH_REVEAL_INTERNALS |
2060 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT);
2061 if (ret != LDB_SUCCESS) {
2064 schema = dsdb_get_schema(ldb, res);
2066 return LDB_ERR_OPERATIONS_ERROR;
2069 old_msg = res->msgs[0];
2071 old_guid = samdb_result_guid(old_msg, "objectGUID");
2073 for (i=0; i<msg->num_elements; i++) {
2074 struct ldb_message_element *el = &msg->elements[i];
2075 struct ldb_message_element *old_el, *new_el;
2076 const struct dsdb_attribute *schema_attr
2077 = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
2079 ldb_asprintf_errstring(ldb,
2080 "attribute %s is not a valid attribute in schema", el->name);
2081 return LDB_ERR_OBJECT_CLASS_VIOLATION;
2083 if (schema_attr->linkID == 0) {
2086 if ((schema_attr->linkID & 1) == 1) {
2087 /* Odd is for the target. Illegal to modify */
2088 ldb_asprintf_errstring(ldb,
2089 "attribute %s must not be modified directly, it is a linked attribute", el->name);
2090 return LDB_ERR_UNWILLING_TO_PERFORM;
2092 old_el = ldb_msg_find_element(old_msg, el->name);
2093 switch (el->flags & LDB_FLAG_MOD_MASK) {
2094 case LDB_FLAG_MOD_REPLACE:
2095 ret = replmd_modify_la_replace(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid);
2097 case LDB_FLAG_MOD_DELETE:
2098 ret = replmd_modify_la_delete(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid);
2100 case LDB_FLAG_MOD_ADD:
2101 ret = replmd_modify_la_add(module, schema, msg, el, old_el, schema_attr, seq_num, t, &old_guid);
2104 ldb_asprintf_errstring(ldb,
2105 "invalid flags 0x%x for %s linked attribute",
2106 el->flags, el->name);
2107 return LDB_ERR_UNWILLING_TO_PERFORM;
2109 if (ret != LDB_SUCCESS) {
2113 ldb_msg_remove_attr(old_msg, el->name);
2115 ldb_msg_add_empty(old_msg, el->name, 0, &new_el);
2116 new_el->num_values = el->num_values;
2117 new_el->values = talloc_steal(msg->elements, el->values);
2119 /* TODO: this relises a bit too heavily on the exact
2120 behaviour of ldb_msg_find_element and
2121 ldb_msg_remove_element */
2122 old_el = ldb_msg_find_element(msg, el->name);
2124 ldb_msg_remove_element(msg, old_el);
2135 static int replmd_modify(struct ldb_module *module, struct ldb_request *req)
2137 struct ldb_context *ldb;
2138 struct replmd_replicated_request *ac;
2139 struct ldb_request *down_req;
2140 struct ldb_message *msg;
2141 time_t t = time(NULL);
2143 bool is_urgent = false;
2144 struct loadparm_context *lp_ctx;
2146 unsigned int functional_level;
2148 /* do not manipulate our control entries */
2149 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2150 return ldb_next_request(module, req);
2153 ldb = ldb_module_get_ctx(module);
2154 functional_level = dsdb_functional_level(ldb);
2156 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
2157 struct loadparm_context);
2159 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_modify\n");
2161 ac = replmd_ctx_init(module, req);
2163 return LDB_ERR_OPERATIONS_ERROR;
2166 /* we have to copy the message as the caller might have it as a const */
2167 msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
2171 return LDB_ERR_OPERATIONS_ERROR;
2174 ldb_msg_remove_attr(msg, "whenChanged");
2175 ldb_msg_remove_attr(msg, "uSNChanged");
2177 ret = replmd_update_rpmd(module, ac->schema, req, msg, &ac->seq_num, t, &is_urgent);
2178 if (ret == LDB_ERR_REFERRAL) {
2181 referral = talloc_asprintf(req,
2183 lp_dnsdomain(lp_ctx),
2184 ldb_dn_get_linearized(msg->dn));
2185 ret = ldb_module_send_referral(req, referral);
2186 return ldb_module_done(req, NULL, NULL, ret);
2189 if (ret != LDB_SUCCESS) {
2194 ret = replmd_modify_handle_linked_attribs(module, msg, ac->seq_num, t);
2195 if (ret != LDB_SUCCESS) {
2201 * - replace the old object with the newly constructed one
2204 ac->is_urgent = is_urgent;
2206 ret = ldb_build_mod_req(&down_req, ldb, ac,
2209 ac, replmd_op_callback,
2211 if (ret != LDB_SUCCESS) {
2216 /* If we are in functional level 2000, then
2217 * replmd_modify_handle_linked_attribs will have done
2219 if (functional_level == DS_DOMAIN_FUNCTION_2000) {
2220 ret = ldb_request_add_control(down_req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
2221 if (ret != LDB_SUCCESS) {
2227 talloc_steal(down_req, msg);
2229 /* we only change whenChanged and uSNChanged if the seq_num
2231 if (ac->seq_num != 0) {
2232 if (add_time_element(msg, "whenChanged", t) != LDB_SUCCESS) {
2237 if (add_uint64_element(msg, "uSNChanged", ac->seq_num) != LDB_SUCCESS) {
2243 /* go on with the call chain */
2244 return ldb_next_request(module, down_req);
2247 static int replmd_rename_callback(struct ldb_request *req, struct ldb_reply *ares);
2250 handle a rename request
2252 On a rename we need to do an extra ldb_modify which sets the
2253 whenChanged and uSNChanged attributes. We do this in a callback after the success.
2255 static int replmd_rename(struct ldb_module *module, struct ldb_request *req)
2257 struct ldb_context *ldb;
2258 struct replmd_replicated_request *ac;
2260 struct ldb_request *down_req;
2262 /* do not manipulate our control entries */
2263 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2264 return ldb_next_request(module, req);
2267 ldb = ldb_module_get_ctx(module);
2269 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_rename\n");
2271 ac = replmd_ctx_init(module, req);
2273 return LDB_ERR_OPERATIONS_ERROR;
2275 ret = ldb_build_rename_req(&down_req, ldb, ac,
2276 ac->req->op.rename.olddn,
2277 ac->req->op.rename.newdn,
2279 ac, replmd_rename_callback,
2282 if (ret != LDB_SUCCESS) {
2287 /* go on with the call chain */
2288 return ldb_next_request(module, down_req);
2291 /* After the rename is compleated, update the whenchanged etc */
2292 static int replmd_rename_callback(struct ldb_request *req, struct ldb_reply *ares)
2294 struct ldb_context *ldb;
2295 struct replmd_replicated_request *ac;
2296 struct ldb_request *down_req;
2297 struct ldb_message *msg;
2298 time_t t = time(NULL);
2301 ac = talloc_get_type(req->context, struct replmd_replicated_request);
2302 ldb = ldb_module_get_ctx(ac->module);
2304 if (ares->error != LDB_SUCCESS) {
2305 return ldb_module_done(ac->req, ares->controls,
2306 ares->response, ares->error);
2309 if (ares->type != LDB_REPLY_DONE) {
2310 ldb_set_errstring(ldb,
2311 "invalid ldb_reply_type in callback");
2313 return ldb_module_done(ac->req, NULL, NULL,
2314 LDB_ERR_OPERATIONS_ERROR);
2317 /* Get a sequence number from the backend */
2318 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ac->seq_num);
2319 if (ret != LDB_SUCCESS) {
2324 * - replace the old object with the newly constructed one
2327 msg = ldb_msg_new(ac);
2330 return LDB_ERR_OPERATIONS_ERROR;
2333 msg->dn = ac->req->op.rename.newdn;
2335 ret = ldb_build_mod_req(&down_req, ldb, ac,
2338 ac, replmd_op_callback,
2341 if (ret != LDB_SUCCESS) {
2345 talloc_steal(down_req, msg);
2347 if (add_time_element(msg, "whenChanged", t) != LDB_SUCCESS) {
2352 if (add_uint64_element(msg, "uSNChanged", ac->seq_num) != LDB_SUCCESS) {
2357 /* go on with the call chain - do the modify after the rename */
2358 return ldb_next_request(ac->module, down_req);
2362 remove links from objects that point at this object when an object
2365 static int replmd_delete_remove_link(struct ldb_module *module,
2366 const struct dsdb_schema *schema,
2368 struct ldb_message_element *el,
2369 const struct dsdb_attribute *sa)
2372 TALLOC_CTX *tmp_ctx = talloc_new(module);
2373 struct ldb_context *ldb = ldb_module_get_ctx(module);
2375 for (i=0; i<el->num_values; i++) {
2376 struct dsdb_dn *dsdb_dn;
2380 struct ldb_message *msg;
2381 const struct dsdb_attribute *target_attr;
2382 struct ldb_message_element *el2;
2383 struct ldb_val dn_val;
2385 if (dsdb_dn_is_deleted_val(&el->values[i])) {
2389 dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &el->values[i], sa->syntax->ldap_oid);
2391 talloc_free(tmp_ctx);
2392 return LDB_ERR_OPERATIONS_ERROR;
2395 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid2, "GUID");
2396 if (!NT_STATUS_IS_OK(status)) {
2397 talloc_free(tmp_ctx);
2398 return LDB_ERR_OPERATIONS_ERROR;
2401 /* remove the link */
2402 msg = ldb_msg_new(tmp_ctx);
2404 ldb_module_oom(module);
2405 talloc_free(tmp_ctx);
2406 return LDB_ERR_OPERATIONS_ERROR;
2410 msg->dn = dsdb_dn->dn;
2412 target_attr = dsdb_attribute_by_linkID(schema, sa->linkID ^ 1);
2413 if (target_attr == NULL) {
2417 ret = ldb_msg_add_empty(msg, target_attr->lDAPDisplayName, LDB_FLAG_MOD_DELETE, &el2);
2418 if (ret != LDB_SUCCESS) {
2419 ldb_module_oom(module);
2420 talloc_free(tmp_ctx);
2421 return LDB_ERR_OPERATIONS_ERROR;
2423 dn_val = data_blob_string_const(ldb_dn_get_linearized(dn));
2424 el2->values = &dn_val;
2425 el2->num_values = 1;
2427 ret = dsdb_module_modify(module, msg, DSDB_FLAG_OWN_MODULE);
2428 if (ret != LDB_SUCCESS) {
2429 talloc_free(tmp_ctx);
2433 talloc_free(tmp_ctx);
2439 handle update of replication meta data for deletion of objects
2441 This also handles the mapping of delete to a rename operation
2442 to allow deletes to be replicated.
2444 static int replmd_delete(struct ldb_module *module, struct ldb_request *req)
2446 int ret = LDB_ERR_OTHER;
2448 struct ldb_dn *old_dn, *new_dn;
2449 const char *rdn_name;
2450 const struct ldb_val *rdn_value, *new_rdn_value;
2452 struct ldb_context *ldb = ldb_module_get_ctx(module);
2453 const struct dsdb_schema *schema;
2454 struct ldb_message *msg, *old_msg;
2455 struct ldb_message_element *el;
2456 TALLOC_CTX *tmp_ctx;
2457 struct ldb_result *res, *parent_res;
2458 const char *preserved_attrs[] = {
2459 /* yes, this really is a hard coded list. See MS-ADTS
2460 section 3.1.1.5.5.1.1 */
2461 "nTSecurityDescriptor", "attributeID", "attributeSyntax", "dNReferenceUpdate", "dNSHostName",
2462 "flatName", "governsID", "groupType", "instanceType", "lDAPDisplayName", "legacyExchangeDN",
2463 "isDeleted", "isRecycled", "lastKnownParent", "msDS-LastKnownRDN", "mS-DS-CreatorSID",
2464 "mSMQOwnerID", "nCName", "objectClass", "distinguishedName", "objectGUID", "objectSid",
2465 "oMSyntax", "proxiedObjectName", "name", "replPropertyMetaData", "sAMAccountName",
2466 "securityIdentifier", "sIDHistory", "subClassOf", "systemFlags", "trustPartner", "trustDirection",
2467 "trustType", "trustAttributes", "userAccountControl", "uSNChanged", "uSNCreated", "whenCreated",
2468 "whenChanged", NULL};
2469 unsigned int i, el_count = 0;
2470 enum deletion_state { OBJECT_NOT_DELETED=1, OBJECT_DELETED=2, OBJECT_RECYCLED=3,
2471 OBJECT_TOMBSTONE=4, OBJECT_REMOVED=5 };
2472 enum deletion_state deletion_state, next_deletion_state;
2475 if (ldb_dn_is_special(req->op.del.dn)) {
2476 return ldb_next_request(module, req);
2479 tmp_ctx = talloc_new(ldb);
2482 return LDB_ERR_OPERATIONS_ERROR;
2485 schema = dsdb_get_schema(ldb, tmp_ctx);
2487 return LDB_ERR_OPERATIONS_ERROR;
2490 old_dn = ldb_dn_copy(tmp_ctx, req->op.del.dn);
2492 /* we need the complete msg off disk, so we can work out which
2493 attributes need to be removed */
2494 ret = dsdb_module_search_dn(module, tmp_ctx, &res, old_dn, NULL,
2495 DSDB_FLAG_NEXT_MODULE |
2496 DSDB_SEARCH_SHOW_DELETED |
2497 DSDB_SEARCH_REVEAL_INTERNALS |
2498 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT);
2499 if (ret != LDB_SUCCESS) {
2500 talloc_free(tmp_ctx);
2503 old_msg = res->msgs[0];
2506 ret = dsdb_recyclebin_enabled(module, &enabled);
2507 if (ret != LDB_SUCCESS) {
2508 talloc_free(tmp_ctx);
2512 if (ldb_msg_check_string_attribute(old_msg, "isDeleted", "TRUE")) {
2514 deletion_state = OBJECT_TOMBSTONE;
2515 next_deletion_state = OBJECT_REMOVED;
2516 } else if (ldb_msg_check_string_attribute(old_msg, "isRecycled", "TRUE")) {
2517 deletion_state = OBJECT_RECYCLED;
2518 next_deletion_state = OBJECT_REMOVED;
2520 deletion_state = OBJECT_DELETED;
2521 next_deletion_state = OBJECT_RECYCLED;
2524 deletion_state = OBJECT_NOT_DELETED;
2526 next_deletion_state = OBJECT_DELETED;
2528 next_deletion_state = OBJECT_TOMBSTONE;
2532 if (next_deletion_state == OBJECT_REMOVED) {
2533 struct auth_session_info *session_info =
2534 (struct auth_session_info *)ldb_get_opaque(ldb, "sessionInfo");
2535 if (security_session_user_level(session_info, NULL) != SECURITY_SYSTEM) {
2536 ldb_asprintf_errstring(ldb, "Refusing to delete deleted object %s",
2537 ldb_dn_get_linearized(old_msg->dn));
2538 return LDB_ERR_UNWILLING_TO_PERFORM;
2541 /* it is already deleted - really remove it this time */
2542 talloc_free(tmp_ctx);
2543 return ldb_next_request(module, req);
2546 rdn_name = ldb_dn_get_rdn_name(old_dn);
2547 rdn_value = ldb_dn_get_rdn_val(old_dn);
2549 msg = ldb_msg_new(tmp_ctx);
2551 ldb_module_oom(module);
2552 talloc_free(tmp_ctx);
2553 return LDB_ERR_OPERATIONS_ERROR;
2558 if (deletion_state == OBJECT_NOT_DELETED){
2559 /* work out where we will be renaming this object to */
2560 ret = dsdb_get_deleted_objects_dn(ldb, tmp_ctx, old_dn, &new_dn);
2561 if (ret != LDB_SUCCESS) {
2562 /* this is probably an attempted delete on a partition
2563 * that doesn't allow delete operations, such as the
2564 * schema partition */
2565 ldb_asprintf_errstring(ldb, "No Deleted Objects container for DN %s",
2566 ldb_dn_get_linearized(old_dn));
2567 talloc_free(tmp_ctx);
2568 return LDB_ERR_UNWILLING_TO_PERFORM;
2571 /* get the objects GUID from the search we just did */
2572 guid = samdb_result_guid(old_msg, "objectGUID");
2574 /* Add a formatted child */
2575 retb = ldb_dn_add_child_fmt(new_dn, "%s=%s\\0ADEL:%s",
2578 GUID_string(tmp_ctx, &guid));
2580 DEBUG(0,(__location__ ": Unable to add a formatted child to dn: %s",
2581 ldb_dn_get_linearized(new_dn)));
2582 talloc_free(tmp_ctx);
2583 return LDB_ERR_OPERATIONS_ERROR;
2586 ret = ldb_msg_add_string(msg, "isDeleted", "TRUE");
2587 if (ret != LDB_SUCCESS) {
2588 DEBUG(0,(__location__ ": Failed to add isDeleted string to the msg\n"));
2589 ldb_module_oom(module);
2590 talloc_free(tmp_ctx);
2593 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
2597 now we need to modify the object in the following ways:
2599 - add isDeleted=TRUE
2600 - update rDN and name, with new rDN
2601 - remove linked attributes
2602 - remove objectCategory and sAMAccountType
2603 - remove attribs not on the preserved list
2604 - preserved if in above list, or is rDN
2605 - remove all linked attribs from this object
2606 - remove all links from other objects to this object
2607 - add lastKnownParent
2608 - update replPropertyMetaData?
2610 see MS-ADTS "Tombstone Requirements" section 3.1.1.5.5.1.1
2613 /* we need the storage form of the parent GUID */
2614 ret = dsdb_module_search_dn(module, tmp_ctx, &parent_res,
2615 ldb_dn_get_parent(tmp_ctx, old_dn), NULL,
2616 DSDB_FLAG_NEXT_MODULE |
2617 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
2618 DSDB_SEARCH_REVEAL_INTERNALS|
2619 DSDB_SEARCH_SHOW_DELETED);
2620 if (ret != LDB_SUCCESS) {
2621 talloc_free(tmp_ctx);
2625 if (deletion_state == OBJECT_NOT_DELETED){
2626 ret = ldb_msg_add_steal_string(msg, "lastKnownParent",
2627 ldb_dn_get_extended_linearized(tmp_ctx, parent_res->msgs[0]->dn, 1));
2628 if (ret != LDB_SUCCESS) {
2629 DEBUG(0,(__location__ ": Failed to add lastKnownParent string to the msg\n"));
2630 ldb_module_oom(module);
2631 talloc_free(tmp_ctx);
2634 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
2637 switch (next_deletion_state){
2639 case OBJECT_DELETED:
2641 ret = ldb_msg_add_value(msg, "msDS-LastKnownRDN", rdn_value, NULL);
2642 if (ret != LDB_SUCCESS) {
2643 DEBUG(0,(__location__ ": Failed to add msDS-LastKnownRDN string to the msg\n"));
2644 ldb_module_oom(module);
2645 talloc_free(tmp_ctx);
2648 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
2650 ret = ldb_msg_add_empty(msg, "objectCategory", LDB_FLAG_MOD_DELETE, NULL);
2651 if (ret != LDB_SUCCESS) {
2652 talloc_free(tmp_ctx);
2653 ldb_module_oom(module);
2657 ret = ldb_msg_add_empty(msg, "sAMAccountType", LDB_FLAG_MOD_DELETE, NULL);
2658 if (ret != LDB_SUCCESS) {
2659 talloc_free(tmp_ctx);
2660 ldb_module_oom(module);
2666 case OBJECT_RECYCLED:
2667 case OBJECT_TOMBSTONE:
2669 /* we also mark it as recycled, meaning this object can't be
2670 recovered (we are stripping its attributes) */
2671 if (dsdb_functional_level(ldb) >= DS_DOMAIN_FUNCTION_2008_R2) {
2672 ret = ldb_msg_add_string(msg, "isRecycled", "TRUE");
2673 if (ret != LDB_SUCCESS) {
2674 DEBUG(0,(__location__ ": Failed to add isRecycled string to the msg\n"));
2675 ldb_module_oom(module);
2676 talloc_free(tmp_ctx);
2679 msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
2682 /* work out which of the old attributes we will be removing */
2683 for (i=0; i<old_msg->num_elements; i++) {
2684 const struct dsdb_attribute *sa;
2685 el = &old_msg->elements[i];
2686 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
2688 talloc_free(tmp_ctx);
2689 return LDB_ERR_OPERATIONS_ERROR;
2691 if (ldb_attr_cmp(el->name, rdn_name) == 0) {
2692 /* don't remove the rDN */
2695 if (sa->linkID && sa->linkID & 1) {
2696 ret = replmd_delete_remove_link(module, schema, old_dn, el, sa);
2697 if (ret != LDB_SUCCESS) {
2698 talloc_free(tmp_ctx);
2699 return LDB_ERR_OPERATIONS_ERROR;
2703 if (!sa->linkID && ldb_attr_in_list(preserved_attrs, el->name)) {
2706 ret = ldb_msg_add_empty(msg, el->name, LDB_FLAG_MOD_DELETE, &el);
2707 if (ret != LDB_SUCCESS) {
2708 talloc_free(tmp_ctx);
2709 ldb_module_oom(module);
2719 if (deletion_state == OBJECT_NOT_DELETED) {
2720 /* work out what the new rdn value is, for updating the
2721 rDN and name fields */
2722 new_rdn_value = ldb_dn_get_rdn_val(new_dn);
2724 ret = ldb_msg_add_value(msg, strlower_talloc(tmp_ctx, rdn_name), new_rdn_value, &el);
2725 if (ret != LDB_SUCCESS) {
2726 talloc_free(tmp_ctx);
2729 el->flags = LDB_FLAG_MOD_REPLACE;
2731 el = ldb_msg_find_element(old_msg, "name");
2733 ret = ldb_msg_add_value(msg, "name", new_rdn_value, &el);
2734 if (ret != LDB_SUCCESS) {
2735 talloc_free(tmp_ctx);
2738 el->flags = LDB_FLAG_MOD_REPLACE;
2742 ret = dsdb_module_modify(module, msg, DSDB_FLAG_OWN_MODULE);
2743 if (ret != LDB_SUCCESS) {
2744 ldb_asprintf_errstring(ldb, "replmd_delete: Failed to modify object %s in delete - %s",
2745 ldb_dn_get_linearized(old_dn), ldb_errstring(ldb));
2746 talloc_free(tmp_ctx);
2750 if (deletion_state == OBJECT_NOT_DELETED) {
2751 /* now rename onto the new DN */
2752 ret = dsdb_module_rename(module, old_dn, new_dn, DSDB_FLAG_NEXT_MODULE);
2753 if (ret != LDB_SUCCESS){
2754 DEBUG(0,(__location__ ": Failed to rename object from '%s' to '%s' - %s\n",
2755 ldb_dn_get_linearized(old_dn),
2756 ldb_dn_get_linearized(new_dn),
2757 ldb_errstring(ldb)));
2758 talloc_free(tmp_ctx);
2763 talloc_free(tmp_ctx);
2765 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
2770 static int replmd_replicated_request_error(struct replmd_replicated_request *ar, int ret)
2775 static int replmd_replicated_request_werror(struct replmd_replicated_request *ar, WERROR status)
2777 int ret = LDB_ERR_OTHER;
2778 /* TODO: do some error mapping */
2782 static int replmd_replicated_apply_add(struct replmd_replicated_request *ar)
2784 struct ldb_context *ldb;
2785 struct ldb_request *change_req;
2786 enum ndr_err_code ndr_err;
2787 struct ldb_message *msg;
2788 struct replPropertyMetaDataBlob *md;
2789 struct ldb_val md_value;
2794 * TODO: check if the parent object exist
2798 * TODO: handle the conflict case where an object with the
2802 ldb = ldb_module_get_ctx(ar->module);
2803 msg = ar->objs->objects[ar->index_current].msg;
2804 md = ar->objs->objects[ar->index_current].meta_data;
2806 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ar->seq_num);
2807 if (ret != LDB_SUCCESS) {
2808 return replmd_replicated_request_error(ar, ret);
2811 ret = ldb_msg_add_value(msg, "objectGUID", &ar->objs->objects[ar->index_current].guid_value, NULL);
2812 if (ret != LDB_SUCCESS) {
2813 return replmd_replicated_request_error(ar, ret);
2816 ret = ldb_msg_add_string(msg, "whenChanged", ar->objs->objects[ar->index_current].when_changed);
2817 if (ret != LDB_SUCCESS) {
2818 return replmd_replicated_request_error(ar, ret);
2821 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNCreated", ar->seq_num);
2822 if (ret != LDB_SUCCESS) {
2823 return replmd_replicated_request_error(ar, ret);
2826 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ar->seq_num);
2827 if (ret != LDB_SUCCESS) {
2828 return replmd_replicated_request_error(ar, ret);
2831 /* remove any message elements that have zero values */
2832 for (i=0; i<msg->num_elements; i++) {
2833 struct ldb_message_element *el = &msg->elements[i];
2835 if (el->num_values == 0) {
2836 DEBUG(4,(__location__ ": Removing attribute %s with num_values==0\n",
2838 memmove(el, el+1, sizeof(*el)*(msg->num_elements - (i+1)));
2839 msg->num_elements--;
2846 * the meta data array is already sorted by the caller
2848 for (i=0; i < md->ctr.ctr1.count; i++) {
2849 md->ctr.ctr1.array[i].local_usn = ar->seq_num;
2851 ndr_err = ndr_push_struct_blob(&md_value, msg, md,
2852 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
2853 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2854 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
2855 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
2857 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &md_value, NULL);
2858 if (ret != LDB_SUCCESS) {
2859 return replmd_replicated_request_error(ar, ret);
2862 replmd_ldb_message_sort(msg, ar->schema);
2865 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_ADD, msg);
2866 DEBUG(4, ("DRS replication add message:\n%s\n", s));
2870 ret = ldb_build_add_req(&change_req,
2878 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
2880 return ldb_next_request(ar->module, change_req);
2884 return true if an update is newer than an existing entry
2885 see section 5.11 of MS-ADTS
2887 static bool replmd_update_is_newer(const struct GUID *current_invocation_id,
2888 const struct GUID *update_invocation_id,
2889 uint32_t current_version,
2890 uint32_t update_version,
2891 NTTIME current_change_time,
2892 NTTIME update_change_time)
2894 if (update_version != current_version) {
2895 return update_version > current_version;
2897 if (update_change_time > current_change_time) {
2900 if (update_change_time == current_change_time) {
2901 return GUID_compare(update_invocation_id, current_invocation_id) > 0;
2906 static bool replmd_replPropertyMetaData1_is_newer(struct replPropertyMetaData1 *cur_m,
2907 struct replPropertyMetaData1 *new_m)
2909 return replmd_update_is_newer(&cur_m->originating_invocation_id,
2910 &new_m->originating_invocation_id,
2913 cur_m->originating_change_time,
2914 new_m->originating_change_time);
2917 static struct replPropertyMetaData1 *
2918 replmd_replPropertyMetaData1_find_attid(struct replPropertyMetaDataBlob *md_blob,
2919 enum drsuapi_DsAttributeId attid)
2922 struct replPropertyMetaDataCtr1 *rpmd_ctr = &md_blob->ctr.ctr1;
2924 for (i = 0; i < rpmd_ctr->count; i++) {
2925 if (rpmd_ctr->array[i].attid == attid) {
2926 return &rpmd_ctr->array[i];
2932 static int replmd_replicated_apply_merge(struct replmd_replicated_request *ar)
2934 struct ldb_context *ldb;
2935 struct ldb_request *change_req;
2936 enum ndr_err_code ndr_err;
2937 struct ldb_message *msg;
2938 struct replPropertyMetaDataBlob *rmd;
2939 struct replPropertyMetaDataBlob omd;
2940 const struct ldb_val *omd_value;
2941 struct replPropertyMetaDataBlob nmd;
2942 struct ldb_val nmd_value;
2943 struct replPropertyMetaData1 *md_remote;
2944 struct replPropertyMetaData1 *md_local;
2947 unsigned int removed_attrs = 0;
2950 ldb = ldb_module_get_ctx(ar->module);
2951 msg = ar->objs->objects[ar->index_current].msg;
2952 rmd = ar->objs->objects[ar->index_current].meta_data;
2956 /* find existing meta data */
2957 omd_value = ldb_msg_find_ldb_val(ar->search_msg, "replPropertyMetaData");
2959 ndr_err = ndr_pull_struct_blob(omd_value, ar, &omd,
2960 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
2961 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2962 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
2963 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
2966 if (omd.version != 1) {
2967 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
2971 /* check if remote 'name' has change,
2972 * which indicates a rename operation */
2973 md_remote = replmd_replPropertyMetaData1_find_attid(rmd, DRSUAPI_ATTRIBUTE_name);
2975 md_local = replmd_replPropertyMetaData1_find_attid(&omd, DRSUAPI_ATTRIBUTE_name);
2976 SMB_ASSERT(md_local);
2977 if (replmd_replPropertyMetaData1_is_newer(md_local, md_remote)) {
2978 SMB_ASSERT(ldb_dn_compare(msg->dn, ar->search_msg->dn) != 0);
2979 /* TODO: Find appropriate local name (dn) for the object
2980 * and modify msg->dn appropriately */
2982 DEBUG(4,("replmd_replicated_request rename %s => %s\n",
2983 ldb_dn_get_linearized(ar->search_msg->dn),
2984 ldb_dn_get_linearized(msg->dn)));
2985 /* pass rename to the next module
2986 * so it doesn't appear as an originating update */
2987 ret = dsdb_module_rename(ar->module,
2988 ar->search_msg->dn, msg->dn,
2989 DSDB_FLAG_NEXT_MODULE);
2990 if (ret != LDB_SUCCESS) {
2991 ldb_debug(ldb, LDB_DEBUG_FATAL,
2992 "replmd_replicated_request rename %s => %s failed - %s\n",
2993 ldb_dn_get_linearized(ar->search_msg->dn),
2994 ldb_dn_get_linearized(msg->dn),
2995 ldb_errstring(ldb));
2996 return replmd_replicated_request_werror(ar, WERR_DS_DRA_DB_ERROR);
3003 nmd.ctr.ctr1.count = omd.ctr.ctr1.count + rmd->ctr.ctr1.count;
3004 nmd.ctr.ctr1.array = talloc_array(ar,
3005 struct replPropertyMetaData1,
3006 nmd.ctr.ctr1.count);
3007 if (!nmd.ctr.ctr1.array) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3009 /* first copy the old meta data */
3010 for (i=0; i < omd.ctr.ctr1.count; i++) {
3011 nmd.ctr.ctr1.array[ni] = omd.ctr.ctr1.array[i];
3015 /* now merge in the new meta data */
3016 for (i=0; i < rmd->ctr.ctr1.count; i++) {
3019 for (j=0; j < ni; j++) {
3022 if (rmd->ctr.ctr1.array[i].attid != nmd.ctr.ctr1.array[j].attid) {
3026 cmp = replmd_replPropertyMetaData1_is_newer(&nmd.ctr.ctr1.array[j],
3027 &rmd->ctr.ctr1.array[i]);
3029 /* replace the entry */
3030 nmd.ctr.ctr1.array[j] = rmd->ctr.ctr1.array[i];
3035 if (rmd->ctr.ctr1.array[i].attid != DRSUAPI_ATTRIBUTE_instanceType) {
3036 DEBUG(3,("Discarding older DRS attribute update to %s on %s from %s\n",
3037 msg->elements[i-removed_attrs].name,
3038 ldb_dn_get_linearized(msg->dn),
3039 GUID_string(ar, &rmd->ctr.ctr1.array[i].originating_invocation_id)));
3042 /* we don't want to apply this change so remove the attribute */
3043 ldb_msg_remove_element(msg, &msg->elements[i-removed_attrs]);
3050 if (found) continue;
3052 nmd.ctr.ctr1.array[ni] = rmd->ctr.ctr1.array[i];
3057 * finally correct the size of the meta_data array
3059 nmd.ctr.ctr1.count = ni;
3062 * the rdn attribute (the alias for the name attribute),
3063 * 'cn' for most objects is the last entry in the meta data array
3066 * sort the new meta data array
3068 ret = replmd_replPropertyMetaDataCtr1_sort(&nmd.ctr.ctr1, ar->schema, msg->dn);
3069 if (ret != LDB_SUCCESS) {
3074 * check if some replicated attributes left, otherwise skip the ldb_modify() call
3076 if (msg->num_elements == 0) {
3077 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_replicated_apply_merge[%u]: skip replace\n",
3080 ar->index_current++;
3081 return replmd_replicated_apply_next(ar);
3084 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_replicated_apply_merge[%u]: replace %u attributes\n",
3085 ar->index_current, msg->num_elements);
3087 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &ar->seq_num);
3088 if (ret != LDB_SUCCESS) {
3089 return replmd_replicated_request_error(ar, ret);
3092 for (i=0; i<ni; i++) {
3093 nmd.ctr.ctr1.array[i].local_usn = ar->seq_num;
3096 /* create the meta data value */
3097 ndr_err = ndr_push_struct_blob(&nmd_value, msg, &nmd,
3098 (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
3099 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3100 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3101 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3105 * when we know that we'll modify the record, add the whenChanged, uSNChanged
3106 * and replPopertyMetaData attributes
3108 ret = ldb_msg_add_string(msg, "whenChanged", ar->objs->objects[ar->index_current].when_changed);
3109 if (ret != LDB_SUCCESS) {
3110 return replmd_replicated_request_error(ar, ret);
3112 ret = samdb_msg_add_uint64(ldb, msg, msg, "uSNChanged", ar->seq_num);
3113 if (ret != LDB_SUCCESS) {
3114 return replmd_replicated_request_error(ar, ret);
3116 ret = ldb_msg_add_value(msg, "replPropertyMetaData", &nmd_value, NULL);
3117 if (ret != LDB_SUCCESS) {
3118 return replmd_replicated_request_error(ar, ret);
3121 replmd_ldb_message_sort(msg, ar->schema);
3123 /* we want to replace the old values */
3124 for (i=0; i < msg->num_elements; i++) {
3125 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
3129 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_MODIFY, msg);
3130 DEBUG(4, ("DRS replication modify message:\n%s\n", s));
3134 ret = ldb_build_mod_req(&change_req,
3142 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3144 return ldb_next_request(ar->module, change_req);
3147 static int replmd_replicated_apply_search_callback(struct ldb_request *req,
3148 struct ldb_reply *ares)
3150 struct replmd_replicated_request *ar = talloc_get_type(req->context,
3151 struct replmd_replicated_request);
3155 return ldb_module_done(ar->req, NULL, NULL,
3156 LDB_ERR_OPERATIONS_ERROR);
3158 if (ares->error != LDB_SUCCESS &&
3159 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
3160 return ldb_module_done(ar->req, ares->controls,
3161 ares->response, ares->error);
3164 switch (ares->type) {
3165 case LDB_REPLY_ENTRY:
3166 ar->search_msg = talloc_steal(ar, ares->message);
3169 case LDB_REPLY_REFERRAL:
3170 /* we ignore referrals */
3173 case LDB_REPLY_DONE:
3174 if (ar->search_msg != NULL) {
3175 ret = replmd_replicated_apply_merge(ar);
3177 ret = replmd_replicated_apply_add(ar);
3179 if (ret != LDB_SUCCESS) {
3180 return ldb_module_done(ar->req, NULL, NULL, ret);
3188 static int replmd_replicated_uptodate_vector(struct replmd_replicated_request *ar);
3190 static int replmd_replicated_apply_next(struct replmd_replicated_request *ar)
3192 struct ldb_context *ldb;
3196 struct ldb_request *search_req;
3197 struct ldb_search_options_control *options;
3199 if (ar->index_current >= ar->objs->num_objects) {
3200 /* done with it, go to next stage */
3201 return replmd_replicated_uptodate_vector(ar);
3204 ldb = ldb_module_get_ctx(ar->module);
3205 ar->search_msg = NULL;
3207 tmp_str = ldb_binary_encode(ar, ar->objs->objects[ar->index_current].guid_value);
3208 if (!tmp_str) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3210 filter = talloc_asprintf(ar, "(objectGUID=%s)", tmp_str);
3211 if (!filter) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3212 talloc_free(tmp_str);
3214 ret = ldb_build_search_req(&search_req,
3223 replmd_replicated_apply_search_callback,
3226 ret = ldb_request_add_control(search_req, LDB_CONTROL_SHOW_DELETED_OID, true, NULL);
3227 if (ret != LDB_SUCCESS) {
3231 /* we need to cope with cross-partition links, so search for
3232 the GUID over all partitions */
3233 options = talloc(search_req, struct ldb_search_options_control);
3234 if (options == NULL) {
3235 DEBUG(0, (__location__ ": out of memory\n"));
3236 return LDB_ERR_OPERATIONS_ERROR;
3238 options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
3240 ret = ldb_request_add_control(search_req,
3241 LDB_CONTROL_SEARCH_OPTIONS_OID,
3243 if (ret != LDB_SUCCESS) {
3247 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3249 return ldb_next_request(ar->module, search_req);
3252 static int replmd_replicated_uptodate_modify_callback(struct ldb_request *req,
3253 struct ldb_reply *ares)
3255 struct ldb_context *ldb;
3256 struct replmd_replicated_request *ar = talloc_get_type(req->context,
3257 struct replmd_replicated_request);
3258 ldb = ldb_module_get_ctx(ar->module);
3261 return ldb_module_done(ar->req, NULL, NULL,
3262 LDB_ERR_OPERATIONS_ERROR);
3264 if (ares->error != LDB_SUCCESS) {
3265 return ldb_module_done(ar->req, ares->controls,
3266 ares->response, ares->error);
3269 if (ares->type != LDB_REPLY_DONE) {
3270 ldb_set_errstring(ldb, "Invalid reply type\n!");
3271 return ldb_module_done(ar->req, NULL, NULL,
3272 LDB_ERR_OPERATIONS_ERROR);
3277 return ldb_module_done(ar->req, NULL, NULL, LDB_SUCCESS);
3280 static int replmd_replicated_uptodate_modify(struct replmd_replicated_request *ar)
3282 struct ldb_context *ldb;
3283 struct ldb_request *change_req;
3284 enum ndr_err_code ndr_err;
3285 struct ldb_message *msg;
3286 struct replUpToDateVectorBlob ouv;
3287 const struct ldb_val *ouv_value;
3288 const struct drsuapi_DsReplicaCursor2CtrEx *ruv;
3289 struct replUpToDateVectorBlob nuv;
3290 struct ldb_val nuv_value;
3291 struct ldb_message_element *nuv_el = NULL;
3292 const struct GUID *our_invocation_id;
3293 struct ldb_message_element *orf_el = NULL;
3294 struct repsFromToBlob nrf;
3295 struct ldb_val *nrf_value = NULL;
3296 struct ldb_message_element *nrf_el = NULL;
3300 time_t t = time(NULL);
3304 ldb = ldb_module_get_ctx(ar->module);
3305 ruv = ar->objs->uptodateness_vector;
3311 unix_to_nt_time(&now, t);
3314 * first create the new replUpToDateVector
3316 ouv_value = ldb_msg_find_ldb_val(ar->search_msg, "replUpToDateVector");
3318 ndr_err = ndr_pull_struct_blob(ouv_value, ar, &ouv,
3319 (ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob);
3320 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3321 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3322 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3325 if (ouv.version != 2) {
3326 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
3331 * the new uptodateness vector will at least
3332 * contain 1 entry, one for the source_dsa
3334 * plus optional values from our old vector and the one from the source_dsa
3336 nuv.ctr.ctr2.count = 1 + ouv.ctr.ctr2.count;
3337 if (ruv) nuv.ctr.ctr2.count += ruv->count;
3338 nuv.ctr.ctr2.cursors = talloc_array(ar,
3339 struct drsuapi_DsReplicaCursor2,
3340 nuv.ctr.ctr2.count);
3341 if (!nuv.ctr.ctr2.cursors) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3343 /* first copy the old vector */
3344 for (i=0; i < ouv.ctr.ctr2.count; i++) {
3345 nuv.ctr.ctr2.cursors[ni] = ouv.ctr.ctr2.cursors[i];
3349 /* get our invocation_id if we have one already attached to the ldb */
3350 our_invocation_id = samdb_ntds_invocation_id(ldb);
3352 /* merge in the source_dsa vector is available */
3353 for (i=0; (ruv && i < ruv->count); i++) {
3356 if (our_invocation_id &&
3357 GUID_equal(&ruv->cursors[i].source_dsa_invocation_id,
3358 our_invocation_id)) {
3362 for (j=0; j < ni; j++) {
3363 if (!GUID_equal(&ruv->cursors[i].source_dsa_invocation_id,
3364 &nuv.ctr.ctr2.cursors[j].source_dsa_invocation_id)) {
3371 * we update only the highest_usn and not the latest_sync_success time,
3372 * because the last success stands for direct replication
3374 if (ruv->cursors[i].highest_usn > nuv.ctr.ctr2.cursors[j].highest_usn) {
3375 nuv.ctr.ctr2.cursors[j].highest_usn = ruv->cursors[i].highest_usn;
3380 if (found) continue;
3382 /* if it's not there yet, add it */
3383 nuv.ctr.ctr2.cursors[ni] = ruv->cursors[i];
3388 * merge in the current highwatermark for the source_dsa
3391 for (j=0; j < ni; j++) {
3392 if (!GUID_equal(&ar->objs->source_dsa->source_dsa_invocation_id,
3393 &nuv.ctr.ctr2.cursors[j].source_dsa_invocation_id)) {
3400 * here we update the highest_usn and last_sync_success time
3401 * because we're directly replicating from the source_dsa
3403 * and use the tmp_highest_usn because this is what we have just applied
3406 nuv.ctr.ctr2.cursors[j].highest_usn = ar->objs->source_dsa->highwatermark.tmp_highest_usn;
3407 nuv.ctr.ctr2.cursors[j].last_sync_success = now;
3412 * here we update the highest_usn and last_sync_success time
3413 * because we're directly replicating from the source_dsa
3415 * and use the tmp_highest_usn because this is what we have just applied
3418 nuv.ctr.ctr2.cursors[ni].source_dsa_invocation_id= ar->objs->source_dsa->source_dsa_invocation_id;
3419 nuv.ctr.ctr2.cursors[ni].highest_usn = ar->objs->source_dsa->highwatermark.tmp_highest_usn;
3420 nuv.ctr.ctr2.cursors[ni].last_sync_success = now;
3425 * finally correct the size of the cursors array
3427 nuv.ctr.ctr2.count = ni;
3432 TYPESAFE_QSORT(nuv.ctr.ctr2.cursors, nuv.ctr.ctr2.count, drsuapi_DsReplicaCursor2_compare);
3435 * create the change ldb_message
3437 msg = ldb_msg_new(ar);
3438 if (!msg) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3439 msg->dn = ar->search_msg->dn;
3441 ndr_err = ndr_push_struct_blob(&nuv_value, msg, &nuv,
3442 (ndr_push_flags_fn_t)ndr_push_replUpToDateVectorBlob);
3443 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3444 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3445 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3447 ret = ldb_msg_add_value(msg, "replUpToDateVector", &nuv_value, &nuv_el);
3448 if (ret != LDB_SUCCESS) {
3449 return replmd_replicated_request_error(ar, ret);
3451 nuv_el->flags = LDB_FLAG_MOD_REPLACE;
3454 * now create the new repsFrom value from the given repsFromTo1 structure
3458 nrf.ctr.ctr1 = *ar->objs->source_dsa;
3459 /* and fix some values... */
3460 nrf.ctr.ctr1.consecutive_sync_failures = 0;
3461 nrf.ctr.ctr1.last_success = now;
3462 nrf.ctr.ctr1.last_attempt = now;
3463 nrf.ctr.ctr1.result_last_attempt = WERR_OK;
3464 nrf.ctr.ctr1.highwatermark.highest_usn = nrf.ctr.ctr1.highwatermark.tmp_highest_usn;
3467 * first see if we already have a repsFrom value for the current source dsa
3468 * if so we'll later replace this value
3470 orf_el = ldb_msg_find_element(ar->search_msg, "repsFrom");
3472 for (i=0; i < orf_el->num_values; i++) {
3473 struct repsFromToBlob *trf;
3475 trf = talloc(ar, struct repsFromToBlob);
3476 if (!trf) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3478 ndr_err = ndr_pull_struct_blob(&orf_el->values[i], trf, trf,
3479 (ndr_pull_flags_fn_t)ndr_pull_repsFromToBlob);
3480 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3481 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3482 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3485 if (trf->version != 1) {
3486 return replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
3490 * we compare the source dsa objectGUID not the invocation_id
3491 * because we want only one repsFrom value per source dsa
3492 * and when the invocation_id of the source dsa has changed we don't need
3493 * the old repsFrom with the old invocation_id
3495 if (!GUID_equal(&trf->ctr.ctr1.source_dsa_obj_guid,
3496 &ar->objs->source_dsa->source_dsa_obj_guid)) {
3502 nrf_value = &orf_el->values[i];
3507 * copy over all old values to the new ldb_message
3509 ret = ldb_msg_add_empty(msg, "repsFrom", 0, &nrf_el);
3510 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3515 * if we haven't found an old repsFrom value for the current source dsa
3516 * we'll add a new value
3519 struct ldb_val zero_value;
3520 ZERO_STRUCT(zero_value);
3521 ret = ldb_msg_add_value(msg, "repsFrom", &zero_value, &nrf_el);
3522 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3524 nrf_value = &nrf_el->values[nrf_el->num_values - 1];
3527 /* we now fill the value which is already attached to ldb_message */
3528 ndr_err = ndr_push_struct_blob(nrf_value, msg,
3530 (ndr_push_flags_fn_t)ndr_push_repsFromToBlob);
3531 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3532 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
3533 return replmd_replicated_request_werror(ar, ntstatus_to_werror(nt_status));
3537 * the ldb_message_element for the attribute, has all the old values and the new one
3538 * so we'll replace the whole attribute with all values
3540 nrf_el->flags = LDB_FLAG_MOD_REPLACE;
3543 char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_MODIFY, msg);
3544 DEBUG(4, ("DRS replication uptodate modify message:\n%s\n", s));
3548 /* prepare the ldb_modify() request */
3549 ret = ldb_build_mod_req(&change_req,
3555 replmd_replicated_uptodate_modify_callback,
3557 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3559 return ldb_next_request(ar->module, change_req);
3562 static int replmd_replicated_uptodate_search_callback(struct ldb_request *req,
3563 struct ldb_reply *ares)
3565 struct replmd_replicated_request *ar = talloc_get_type(req->context,
3566 struct replmd_replicated_request);
3570 return ldb_module_done(ar->req, NULL, NULL,
3571 LDB_ERR_OPERATIONS_ERROR);
3573 if (ares->error != LDB_SUCCESS &&
3574 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
3575 return ldb_module_done(ar->req, ares->controls,
3576 ares->response, ares->error);
3579 switch (ares->type) {
3580 case LDB_REPLY_ENTRY:
3581 ar->search_msg = talloc_steal(ar, ares->message);
3584 case LDB_REPLY_REFERRAL:
3585 /* we ignore referrals */
3588 case LDB_REPLY_DONE:
3589 if (ar->search_msg == NULL) {
3590 ret = replmd_replicated_request_werror(ar, WERR_DS_DRA_INTERNAL_ERROR);
3592 ret = replmd_replicated_uptodate_modify(ar);
3594 if (ret != LDB_SUCCESS) {
3595 return ldb_module_done(ar->req, NULL, NULL, ret);
3604 static int replmd_replicated_uptodate_vector(struct replmd_replicated_request *ar)
3606 struct ldb_context *ldb;
3608 static const char *attrs[] = {
3609 "replUpToDateVector",
3613 struct ldb_request *search_req;
3615 ldb = ldb_module_get_ctx(ar->module);
3616 ar->search_msg = NULL;
3618 ret = ldb_build_search_req(&search_req,
3621 ar->objs->partition_dn,
3627 replmd_replicated_uptodate_search_callback,
3629 if (ret != LDB_SUCCESS) return replmd_replicated_request_error(ar, ret);
3631 return ldb_next_request(ar->module, search_req);
3636 static int replmd_extended_replicated_objects(struct ldb_module *module, struct ldb_request *req)
3638 struct ldb_context *ldb;
3639 struct dsdb_extended_replicated_objects *objs;
3640 struct replmd_replicated_request *ar;
3641 struct ldb_control **ctrls;
3644 struct replmd_private *replmd_private =
3645 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
3647 ldb = ldb_module_get_ctx(module);
3649 ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_extended_replicated_objects\n");
3651 objs = talloc_get_type(req->op.extended.data, struct dsdb_extended_replicated_objects);
3653 ldb_debug(ldb, LDB_DEBUG_FATAL, "replmd_extended_replicated_objects: invalid extended data\n");
3654 return LDB_ERR_PROTOCOL_ERROR;
3657 if (objs->version != DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION) {
3658 ldb_debug(ldb, LDB_DEBUG_FATAL, "replmd_extended_replicated_objects: extended data invalid version [%u != %u]\n",
3659 objs->version, DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION);
3660 return LDB_ERR_PROTOCOL_ERROR;
3663 ar = replmd_ctx_init(module, req);
3665 return LDB_ERR_OPERATIONS_ERROR;
3667 /* Set the flags to have the replmd_op_callback run over the full set of objects */
3668 ar->apply_mode = true;
3670 ar->schema = dsdb_get_schema(ldb, ar);
3672 ldb_debug_set(ldb, LDB_DEBUG_FATAL, "replmd_ctx_init: no loaded schema found\n");
3674 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
3675 return LDB_ERR_CONSTRAINT_VIOLATION;
3678 ctrls = req->controls;
3680 if (req->controls) {
3681 req->controls = talloc_memdup(ar, req->controls,
3682 talloc_get_size(req->controls));
3683 if (!req->controls) return replmd_replicated_request_werror(ar, WERR_NOMEM);
3686 /* This allows layers further down to know if a change came in over replication */
3687 ret = ldb_request_add_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID, false, NULL);
3688 if (ret != LDB_SUCCESS) {
3692 /* If this change contained linked attributes in the body
3693 * (rather than in the links section) we need to update
3694 * backlinks in linked_attributes */
3695 ret = ldb_request_add_control(req, DSDB_CONTROL_APPLY_LINKS, false, NULL);
3696 if (ret != LDB_SUCCESS) {
3700 ar->controls = req->controls;
3701 req->controls = ctrls;
3703 DEBUG(4,("linked_attributes_count=%u\n", objs->linked_attributes_count));
3705 /* save away the linked attributes for the end of the
3707 for (i=0; i<ar->objs->linked_attributes_count; i++) {
3708 struct la_entry *la_entry;
3710 if (replmd_private->la_ctx == NULL) {
3711 replmd_private->la_ctx = talloc_new(replmd_private);
3713 la_entry = talloc(replmd_private->la_ctx, struct la_entry);
3714 if (la_entry == NULL) {
3716 return LDB_ERR_OPERATIONS_ERROR;
3718 la_entry->la = talloc(la_entry, struct drsuapi_DsReplicaLinkedAttribute);
3719 if (la_entry->la == NULL) {
3720 talloc_free(la_entry);
3722 return LDB_ERR_OPERATIONS_ERROR;
3724 *la_entry->la = ar->objs->linked_attributes[i];
3726 /* we need to steal the non-scalars so they stay
3727 around until the end of the transaction */
3728 talloc_steal(la_entry->la, la_entry->la->identifier);
3729 talloc_steal(la_entry->la, la_entry->la->value.blob);
3731 DLIST_ADD(replmd_private->la_list, la_entry);
3734 return replmd_replicated_apply_next(ar);
3738 process one linked attribute structure
3740 static int replmd_process_linked_attribute(struct ldb_module *module,
3741 struct la_entry *la_entry)
3743 struct drsuapi_DsReplicaLinkedAttribute *la = la_entry->la;
3744 struct ldb_context *ldb = ldb_module_get_ctx(module);
3745 struct ldb_message *msg;
3746 TALLOC_CTX *tmp_ctx = talloc_new(la_entry);
3747 const struct dsdb_schema *schema = dsdb_get_schema(ldb, tmp_ctx);
3749 const struct dsdb_attribute *attr;
3750 struct dsdb_dn *dsdb_dn;
3751 uint64_t seq_num = 0;
3752 struct ldb_message_element *old_el;
3754 time_t t = time(NULL);
3755 struct ldb_result *res;
3756 const char *attrs[2];
3757 struct parsed_dn *pdn_list, *pdn;
3758 struct GUID guid = GUID_zero();
3760 bool active = (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)?true:false;
3761 const struct GUID *our_invocation_id;
3764 linked_attributes[0]:
3765 &objs->linked_attributes[i]: struct drsuapi_DsReplicaLinkedAttribute
3767 identifier: struct drsuapi_DsReplicaObjectIdentifier
3768 __ndr_size : 0x0000003a (58)
3769 __ndr_size_sid : 0x00000000 (0)
3770 guid : 8e95b6a9-13dd-4158-89db-3220a5be5cc7
3772 __ndr_size_dn : 0x00000000 (0)
3774 attid : DRSUAPI_ATTRIBUTE_member (0x1F)
3775 value: struct drsuapi_DsAttributeValue
3776 __ndr_size : 0x0000007e (126)
3778 blob : DATA_BLOB length=126
3779 flags : 0x00000001 (1)
3780 1: DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE
3781 originating_add_time : Wed Sep 2 22:20:01 2009 EST
3782 meta_data: struct drsuapi_DsReplicaMetaData
3783 version : 0x00000015 (21)
3784 originating_change_time : Wed Sep 2 23:39:07 2009 EST
3785 originating_invocation_id: 794640f3-18cf-40ee-a211-a93992b67a64
3786 originating_usn : 0x000000000001e19c (123292)
3788 (for cases where the link is to a normal DN)
3789 &target: struct drsuapi_DsReplicaObjectIdentifier3
3790 __ndr_size : 0x0000007e (126)
3791 __ndr_size_sid : 0x0000001c (28)
3792 guid : 7639e594-db75-4086-b0d4-67890ae46031
3793 sid : S-1-5-21-2848215498-2472035911-1947525656-19924
3794 __ndr_size_dn : 0x00000022 (34)
3795 dn : 'CN=UOne,OU=TestOU,DC=vsofs8,DC=com'
3798 /* find the attribute being modified */
3799 attr = dsdb_attribute_by_attributeID_id(schema, la->attid);
3801 DEBUG(0, (__location__ ": Unable to find attributeID 0x%x\n", la->attid));
3802 talloc_free(tmp_ctx);
3803 return LDB_ERR_OPERATIONS_ERROR;
3806 attrs[0] = attr->lDAPDisplayName;
3809 /* get the existing message from the db for the object with
3810 this GUID, returning attribute being modified. We will then
3811 use this msg as the basis for a modify call */
3812 ret = dsdb_module_search(module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE, attrs,
3813 DSDB_FLAG_NEXT_MODULE |
3814 DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
3815 DSDB_SEARCH_SHOW_DELETED |
3816 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
3817 DSDB_SEARCH_REVEAL_INTERNALS,
3818 "objectGUID=%s", GUID_string(tmp_ctx, &la->identifier->guid));
3819 if (ret != LDB_SUCCESS) {
3820 talloc_free(tmp_ctx);
3823 if (res->count != 1) {
3824 ldb_asprintf_errstring(ldb, "DRS linked attribute for GUID %s - DN not found",
3825 GUID_string(tmp_ctx, &la->identifier->guid));
3826 talloc_free(tmp_ctx);
3827 return LDB_ERR_NO_SUCH_OBJECT;
3831 if (msg->num_elements == 0) {
3832 ret = ldb_msg_add_empty(msg, attr->lDAPDisplayName, LDB_FLAG_MOD_REPLACE, &old_el);
3833 if (ret != LDB_SUCCESS) {
3834 ldb_module_oom(module);
3835 talloc_free(tmp_ctx);
3836 return LDB_ERR_OPERATIONS_ERROR;
3839 old_el = &msg->elements[0];
3840 old_el->flags = LDB_FLAG_MOD_REPLACE;
3843 /* parse the existing links */
3844 ret = get_parsed_dns(module, tmp_ctx, old_el, &pdn_list, attr->syntax->ldap_oid);
3845 if (ret != LDB_SUCCESS) {
3846 talloc_free(tmp_ctx);
3850 /* get our invocationId */
3851 our_invocation_id = samdb_ntds_invocation_id(ldb);
3852 if (!our_invocation_id) {
3853 ldb_debug_set(ldb, LDB_DEBUG_ERROR, __location__ ": unable to find invocationId\n");
3854 talloc_free(tmp_ctx);
3855 return LDB_ERR_OPERATIONS_ERROR;
3858 ret = replmd_check_upgrade_links(pdn_list, old_el->num_values, old_el, our_invocation_id);
3859 if (ret != LDB_SUCCESS) {
3860 talloc_free(tmp_ctx);
3864 status = dsdb_dn_la_from_blob(ldb, attr, schema, tmp_ctx, la->value.blob, &dsdb_dn);
3865 if (!W_ERROR_IS_OK(status)) {
3866 ldb_asprintf_errstring(ldb, "Failed to parsed linked attribute blob for %s on %s - %s\n",
3867 old_el->name, ldb_dn_get_linearized(msg->dn), win_errstr(status));
3868 return LDB_ERR_OPERATIONS_ERROR;
3871 ntstatus = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid, "GUID");
3872 if (!NT_STATUS_IS_OK(ntstatus) && active) {
3873 ldb_asprintf_errstring(ldb, "Failed to find GUID in linked attribute blob for %s on %s from %s",
3875 ldb_dn_get_linearized(dsdb_dn->dn),
3876 ldb_dn_get_linearized(msg->dn));
3877 return LDB_ERR_OPERATIONS_ERROR;
3880 /* re-resolve the DN by GUID, as the DRS server may give us an
3882 ret = dsdb_module_dn_by_guid(module, dsdb_dn, &guid, &dsdb_dn->dn);
3883 if (ret != LDB_SUCCESS) {
3884 DEBUG(2,(__location__ ": WARNING: Failed to re-resolve GUID %s - using %s",
3885 GUID_string(tmp_ctx, &guid),
3886 ldb_dn_get_linearized(dsdb_dn->dn)));
3889 /* see if this link already exists */
3890 pdn = parsed_dn_find(pdn_list, old_el->num_values, &guid, dsdb_dn->dn);
3892 /* see if this update is newer than what we have already */
3893 struct GUID invocation_id = GUID_zero();
3894 uint32_t version = 0;
3895 NTTIME change_time = 0;
3896 uint32_t rmd_flags = dsdb_dn_rmd_flags(pdn->dsdb_dn->dn);
3898 dsdb_get_extended_dn_guid(pdn->dsdb_dn->dn, &invocation_id, "RMD_INVOCID");
3899 dsdb_get_extended_dn_uint32(pdn->dsdb_dn->dn, &version, "RMD_VERSION");
3900 dsdb_get_extended_dn_nttime(pdn->dsdb_dn->dn, &change_time, "RMD_CHANGETIME");
3902 if (!replmd_update_is_newer(&invocation_id,
3903 &la->meta_data.originating_invocation_id,
3905 la->meta_data.version,
3907 la->meta_data.originating_change_time)) {
3908 DEBUG(3,("Discarding older DRS linked attribute update to %s on %s from %s\n",
3909 old_el->name, ldb_dn_get_linearized(msg->dn),
3910 GUID_string(tmp_ctx, &la->meta_data.originating_invocation_id)));
3911 talloc_free(tmp_ctx);
3915 /* get a seq_num for this change */
3916 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
3917 if (ret != LDB_SUCCESS) {
3918 talloc_free(tmp_ctx);
3922 if (!(rmd_flags & DSDB_RMD_FLAG_DELETED)) {
3923 /* remove the existing backlink */
3924 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid, false, attr, false);
3925 if (ret != LDB_SUCCESS) {
3926 talloc_free(tmp_ctx);
3931 ret = replmd_update_la_val(tmp_ctx, pdn->v, dsdb_dn, pdn->dsdb_dn,
3932 &la->meta_data.originating_invocation_id,
3933 la->meta_data.originating_usn, seq_num,
3934 la->meta_data.originating_change_time,
3935 la->meta_data.version,
3937 if (ret != LDB_SUCCESS) {
3938 talloc_free(tmp_ctx);
3943 /* add the new backlink */
3944 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid, true, attr, false);
3945 if (ret != LDB_SUCCESS) {
3946 talloc_free(tmp_ctx);
3951 /* get a seq_num for this change */
3952 ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
3953 if (ret != LDB_SUCCESS) {
3954 talloc_free(tmp_ctx);
3958 old_el->values = talloc_realloc(msg->elements, old_el->values,
3959 struct ldb_val, old_el->num_values+1);
3960 if (!old_el->values) {
3961 ldb_module_oom(module);
3962 return LDB_ERR_OPERATIONS_ERROR;
3964 old_el->num_values++;
3966 ret = replmd_build_la_val(tmp_ctx, &old_el->values[old_el->num_values-1], dsdb_dn,
3967 &la->meta_data.originating_invocation_id,
3968 la->meta_data.originating_usn, seq_num,
3969 la->meta_data.originating_change_time,
3970 la->meta_data.version,
3971 (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)?false:true);
3972 if (ret != LDB_SUCCESS) {
3973 talloc_free(tmp_ctx);
3978 ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid,
3980 if (ret != LDB_SUCCESS) {
3981 talloc_free(tmp_ctx);
3987 /* we only change whenChanged and uSNChanged if the seq_num
3989 if (add_time_element(msg, "whenChanged", t) != LDB_SUCCESS) {
3990 talloc_free(tmp_ctx);
3991 return LDB_ERR_OPERATIONS_ERROR;
3994 if (add_uint64_element(msg, "uSNChanged", seq_num) != LDB_SUCCESS) {
3995 talloc_free(tmp_ctx);
3996 return LDB_ERR_OPERATIONS_ERROR;
3999 ret = dsdb_check_single_valued_link(attr, old_el);
4000 if (ret != LDB_SUCCESS) {
4001 talloc_free(tmp_ctx);
4005 ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE | DSDB_MODIFY_RELAX);
4006 if (ret != LDB_SUCCESS) {
4007 ldb_debug(ldb, LDB_DEBUG_WARNING, "Failed to apply linked attribute change '%s'\n%s\n",
4009 ldb_ldif_message_string(ldb, tmp_ctx, LDB_CHANGETYPE_MODIFY, msg));
4010 talloc_free(tmp_ctx);
4014 talloc_free(tmp_ctx);
4019 static int replmd_extended(struct ldb_module *module, struct ldb_request *req)
4021 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_REPLICATED_OBJECTS_OID) == 0) {
4022 return replmd_extended_replicated_objects(module, req);
4025 return ldb_next_request(module, req);
4030 we hook into the transaction operations to allow us to
4031 perform the linked attribute updates at the end of the whole
4032 transaction. This allows a forward linked attribute to be created
4033 before the object is created. During a vampire, w2k8 sends us linked
4034 attributes before the objects they are part of.
4036 static int replmd_start_transaction(struct ldb_module *module)
4038 /* create our private structure for this transaction */
4039 struct replmd_private *replmd_private = talloc_get_type(ldb_module_get_private(module),
4040 struct replmd_private);
4041 replmd_txn_cleanup(replmd_private);
4043 /* free any leftover mod_usn records from cancelled
4045 while (replmd_private->ncs) {
4046 struct nc_entry *e = replmd_private->ncs;
4047 DLIST_REMOVE(replmd_private->ncs, e);
4051 return ldb_next_start_trans(module);
4055 on prepare commit we loop over our queued la_context structures and
4058 static int replmd_prepare_commit(struct ldb_module *module)
4060 struct replmd_private *replmd_private =
4061 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
4062 struct la_entry *la, *prev;
4063 struct la_backlink *bl;
4066 /* walk the list backwards, to do the first entry first, as we
4067 * added the entries with DLIST_ADD() which puts them at the
4068 * start of the list */
4069 for (la = DLIST_TAIL(replmd_private->la_list); la; la=prev) {
4070 prev = DLIST_PREV(la);
4071 DLIST_REMOVE(replmd_private->la_list, la);
4072 ret = replmd_process_linked_attribute(module, la);
4073 if (ret != LDB_SUCCESS) {
4074 replmd_txn_cleanup(replmd_private);
4079 /* process our backlink list, creating and deleting backlinks
4081 for (bl=replmd_private->la_backlinks; bl; bl=bl->next) {
4082 ret = replmd_process_backlink(module, bl);
4083 if (ret != LDB_SUCCESS) {
4084 replmd_txn_cleanup(replmd_private);
4089 replmd_txn_cleanup(replmd_private);
4091 /* possibly change @REPLCHANGED */
4092 ret = replmd_notify_store(module);
4093 if (ret != LDB_SUCCESS) {
4097 return ldb_next_prepare_commit(module);
4100 static int replmd_del_transaction(struct ldb_module *module)
4102 struct replmd_private *replmd_private =
4103 talloc_get_type(ldb_module_get_private(module), struct replmd_private);
4104 replmd_txn_cleanup(replmd_private);
4106 return ldb_next_del_trans(module);
4110 _PUBLIC_ const struct ldb_module_ops ldb_repl_meta_data_module_ops = {
4111 .name = "repl_meta_data",
4112 .init_context = replmd_init,
4114 .modify = replmd_modify,
4115 .rename = replmd_rename,
4116 .del = replmd_delete,
4117 .extended = replmd_extended,
4118 .start_transaction = replmd_start_transaction,
4119 .prepare_commit = replmd_prepare_commit,
4120 .del_transaction = replmd_del_transaction,