4 Copyright (C) Simo Sorce 2006-2008
5 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2009
6 Copyright (C) Matthias Dieter Wallnöfer 2010
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 * Component: objectClass sorting and constraint checking module
28 * - sort the objectClass attribute into the class
29 * hierarchy and perform constraint checks (correct RDN name,
31 * - fix DNs into 'standard' case
32 * - Add objectCategory and some other attribute defaults
34 * Author: Andrew Bartlett
39 #include "ldb_module.h"
40 #include "util/dlinklist.h"
41 #include "dsdb/samdb/samdb.h"
42 #include "librpc/ndr/libndr.h"
43 #include "librpc/gen_ndr/ndr_security.h"
44 #include "libcli/security/security.h"
45 #include "auth/auth.h"
46 #include "param/param.h"
47 #include "../libds/common/flags.h"
48 #include "dsdb/samdb/ldb_modules/schema.h"
53 struct ldb_module *module;
54 struct ldb_request *req;
55 const struct dsdb_schema *schema;
57 struct ldb_reply *search_res;
58 struct ldb_reply *search_res2;
60 int (*step_fn)(struct oc_context *);
64 struct class_list *prev, *next;
65 const struct dsdb_class *objectclass;
68 static struct oc_context *oc_init_context(struct ldb_module *module,
69 struct ldb_request *req)
71 struct ldb_context *ldb;
72 struct oc_context *ac;
74 ldb = ldb_module_get_ctx(module);
76 ac = talloc_zero(req, struct oc_context);
84 ac->schema = dsdb_get_schema(ldb, ac);
89 static int objectclass_do_add(struct oc_context *ac);
91 /* Sort objectClasses into correct order, and validate that all
92 * objectClasses specified actually exist in the schema
95 static int objectclass_sort(struct ldb_module *module,
96 const struct dsdb_schema *schema,
98 struct ldb_message_element *objectclass_element,
99 struct class_list **sorted_out)
101 struct ldb_context *ldb;
102 unsigned int i, lowest;
103 struct class_list *unsorted = NULL, *sorted = NULL, *current = NULL, *poss_parent = NULL, *new_parent = NULL, *current_lowest = NULL;
105 ldb = ldb_module_get_ctx(module);
109 * We work on 4 different 'bins' (implemented here as linked lists):
111 * * sorted: the eventual list, in the order we wish to push
112 * into the database. This is the only ordered list.
114 * * parent_class: The current parent class 'bin' we are
115 * trying to find subclasses for
117 * * subclass: The subclasses we have found so far
119 * * unsorted: The remaining objectClasses
121 * The process is a matter of filtering objectClasses up from
122 * unsorted into sorted. Order is irrelevent in the later 3 'bins'.
124 * We start with 'top' (found and promoted to parent_class
125 * initially). Then we find (in unsorted) all the direct
126 * subclasses of 'top'. parent_classes is concatenated onto
127 * the end of 'sorted', and subclass becomes the list in
130 * We then repeat, until we find no more subclasses. Any left
131 * over classes are added to the end.
135 /* Firstly, dump all the objectClass elements into the
136 * unsorted bin, except for 'top', which is special */
137 for (i=0; i < objectclass_element->num_values; i++) {
138 current = talloc(mem_ctx, struct class_list);
142 current->objectclass = dsdb_class_by_lDAPDisplayName_ldb_val(schema, &objectclass_element->values[i]);
143 if (!current->objectclass) {
144 ldb_asprintf_errstring(ldb, "objectclass %.*s is not a valid objectClass in schema",
145 (int)objectclass_element->values[i].length, (const char *)objectclass_element->values[i].data);
146 /* This looks weird, but windows apparently returns this for invalid objectClass values */
147 return LDB_ERR_NO_SUCH_ATTRIBUTE;
148 } else if (current->objectclass->isDefunct) {
149 ldb_asprintf_errstring(ldb, "objectclass %.*s marked as isDefunct objectClass in schema - not valid for new objects",
150 (int)objectclass_element->values[i].length, (const char *)objectclass_element->values[i].data);
151 /* This looks weird, but windows apparently returns this for invalid objectClass values */
152 return LDB_ERR_NO_SUCH_ATTRIBUTE;
155 /* Don't add top to list, we will do that later */
156 if (ldb_attr_cmp("top", current->objectclass->lDAPDisplayName) != 0) {
157 DLIST_ADD_END(unsorted, current, struct class_list *);
161 /* Add top here, to prevent duplicates */
162 current = talloc(mem_ctx, struct class_list);
163 current->objectclass = dsdb_class_by_lDAPDisplayName(schema, "top");
164 DLIST_ADD_END(sorted, current, struct class_list *);
167 /* For each object: find parent chain */
168 for (current = unsorted; schema && current; current = current->next) {
169 for (poss_parent = unsorted; poss_parent; poss_parent = poss_parent->next) {
170 if (ldb_attr_cmp(poss_parent->objectclass->lDAPDisplayName, current->objectclass->subClassOf) == 0) {
174 /* If we didn't get to the end of the list, we need to add this parent */
175 if (poss_parent || (ldb_attr_cmp("top", current->objectclass->subClassOf) == 0)) {
179 new_parent = talloc(mem_ctx, struct class_list);
180 new_parent->objectclass = dsdb_class_by_lDAPDisplayName(schema, current->objectclass->subClassOf);
181 DLIST_ADD_END(unsorted, new_parent, struct class_list *);
187 current_lowest = NULL;
188 for (current = unsorted; schema && current; current = current->next) {
189 if(current->objectclass->subClass_order < lowest) {
190 current_lowest = current;
191 lowest = current->objectclass->subClass_order;
195 if(current_lowest != NULL) {
196 DLIST_REMOVE(unsorted,current_lowest);
197 DLIST_ADD_END(sorted,current_lowest, struct class_list *);
203 *sorted_out = sorted;
208 /* If we don't have schema yet, then just merge the lists again */
209 DLIST_CONCATENATE(sorted, unsorted, struct class_list *);
210 *sorted_out = sorted;
214 /* This shouldn't happen, and would break MMC, perhaps there
215 * was no 'top', a conflict in the objectClasses or some other
218 ldb_asprintf_errstring(ldb, "objectclass %s is not a valid objectClass in objectClass chain", unsorted->objectclass->lDAPDisplayName);
219 return LDB_ERR_OBJECT_CLASS_VIOLATION;
222 static int get_search_callback(struct ldb_request *req, struct ldb_reply *ares)
224 struct ldb_context *ldb;
225 struct oc_context *ac;
228 ac = talloc_get_type(req->context, struct oc_context);
229 ldb = ldb_module_get_ctx(ac->module);
232 return ldb_module_done(ac->req, NULL, NULL,
233 LDB_ERR_OPERATIONS_ERROR);
235 if (ares->error != LDB_SUCCESS &&
236 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
237 return ldb_module_done(ac->req, ares->controls,
238 ares->response, ares->error);
241 ldb_reset_err_string(ldb);
243 switch (ares->type) {
244 case LDB_REPLY_ENTRY:
245 if (ac->search_res != NULL) {
246 ldb_set_errstring(ldb, "Too many results");
248 return ldb_module_done(ac->req, NULL, NULL,
249 LDB_ERR_OPERATIONS_ERROR);
252 ac->search_res = talloc_steal(ac, ares);
255 case LDB_REPLY_REFERRAL:
262 ret = ac->step_fn(ac);
263 if (ret != LDB_SUCCESS) {
264 return ldb_module_done(ac->req, NULL, NULL, ret);
272 static int oc_op_callback(struct ldb_request *req, struct ldb_reply *ares)
274 struct oc_context *ac;
276 ac = talloc_get_type(req->context, struct oc_context);
279 return ldb_module_done(ac->req, NULL, NULL,
280 LDB_ERR_OPERATIONS_ERROR);
283 if (ares->type == LDB_REPLY_REFERRAL) {
284 return ldb_module_send_referral(ac->req, ares->referral);
287 if (ares->error != LDB_SUCCESS) {
288 return ldb_module_done(ac->req, ares->controls,
289 ares->response, ares->error);
292 if (ares->type != LDB_REPLY_DONE) {
294 return ldb_module_done(ac->req, NULL, NULL,
295 LDB_ERR_OPERATIONS_ERROR);
298 return ldb_module_done(ac->req, ares->controls,
299 ares->response, ares->error);
302 /* Fix up the DN to be in the standard form, taking particular care to match the parent DN
304 This should mean that if the parent is:
305 CN=Users,DC=samba,DC=example,DC=com
306 and a proposed child is
307 cn=Admins ,cn=USERS,dc=Samba,dc=example,dc=COM
309 The resulting DN should be:
311 CN=Admins,CN=Users,DC=samba,DC=example,DC=com
314 static int fix_dn(struct ldb_context *ldb,
316 struct ldb_dn *newdn, struct ldb_dn *parent_dn,
317 struct ldb_dn **fixed_dn)
319 char *upper_rdn_attr;
320 const struct ldb_val *rdn_val;
322 /* Fix up the DN to be in the standard form, taking particular care to
323 * match the parent DN */
324 *fixed_dn = ldb_dn_copy(mem_ctx, parent_dn);
325 if (*fixed_dn == NULL) {
329 /* We need the attribute name in upper case */
330 upper_rdn_attr = strupper_talloc(*fixed_dn,
331 ldb_dn_get_rdn_name(newdn));
332 if (upper_rdn_attr == NULL) {
336 /* Create a new child */
337 if (ldb_dn_add_child_fmt(*fixed_dn, "X=X") == false) {
338 return ldb_operr(ldb);
341 rdn_val = ldb_dn_get_rdn_val(newdn);
342 if (rdn_val == NULL) {
343 return ldb_operr(ldb);
347 /* the rules for rDN length constraints are more complex than
348 this. Until we understand them we need to leave this
349 constraint out. Otherwise we break replication, as windows
350 does sometimes send us rDNs longer than 64 */
351 if (!rdn_val || rdn_val->length > 64) {
352 DEBUG(2,(__location__ ": WARNING: rDN longer than 64 limit for '%s'\n", ldb_dn_get_linearized(newdn)));
357 /* And replace it with CN=foo (we need the attribute in upper case) */
358 return ldb_dn_set_component(*fixed_dn, 0, upper_rdn_attr, *rdn_val);
362 static int objectclass_do_add(struct oc_context *ac);
364 static int objectclass_add(struct ldb_module *module, struct ldb_request *req)
366 struct ldb_context *ldb;
367 struct ldb_request *search_req;
368 struct oc_context *ac;
369 struct ldb_dn *parent_dn;
370 const struct ldb_val *val;
372 static const char * const parent_attrs[] = { "objectClass", NULL };
374 ldb = ldb_module_get_ctx(module);
376 ldb_debug(ldb, LDB_DEBUG_TRACE, "objectclass_add\n");
378 /* do not manipulate our control entries */
379 if (ldb_dn_is_special(req->op.add.message->dn)) {
380 return ldb_next_request(module, req);
383 /* An add operation on the basedn without "NC-add" operation isn't
385 if (ldb_dn_compare(ldb_get_default_basedn(ldb), req->op.add.message->dn) == 0) {
386 unsigned int instanceType;
388 instanceType = ldb_msg_find_attr_as_uint(req->op.add.message,
390 if (!(instanceType & INSTANCE_TYPE_IS_NC_HEAD)) {
392 /* When we are trying to readd the root basedn then
393 * this is denied, but with an interesting mechanism:
394 * there is generated a referral with the last
395 * component value as hostname. */
396 val = ldb_dn_get_component_val(req->op.add.message->dn,
397 ldb_dn_get_comp_num(req->op.add.message->dn) - 1);
399 return ldb_operr(ldb);
401 referral_uri = talloc_asprintf(req, "ldap://%s/%s", val->data,
402 ldb_dn_get_linearized(req->op.add.message->dn));
403 if (referral_uri == NULL) {
404 return ldb_module_oom(module);
407 return ldb_module_send_referral(req, referral_uri);
411 ac = oc_init_context(module, req);
413 return ldb_operr(ldb);
416 /* If there isn't a parent, just go on to the add processing */
417 if (ldb_dn_get_comp_num(ac->req->op.add.message->dn) == 1) {
418 return objectclass_do_add(ac);
421 /* get copy of parent DN */
422 parent_dn = ldb_dn_get_parent(ac, ac->req->op.add.message->dn);
423 if (parent_dn == NULL) {
424 return ldb_operr(ldb);
427 ret = ldb_build_search_req(&search_req, ldb,
428 ac, parent_dn, LDB_SCOPE_BASE,
429 "(objectClass=*)", parent_attrs,
431 ac, get_search_callback,
433 LDB_REQ_SET_LOCATION(search_req);
434 if (ret != LDB_SUCCESS) {
438 ac->step_fn = objectclass_do_add;
440 return ldb_next_request(ac->module, search_req);
445 check if this is a special RODC nTDSDSA add
447 static bool check_rodc_ntdsdsa_add(struct oc_context *ac,
448 const struct dsdb_class *objectclass)
450 struct ldb_control *rodc_control;
452 if (strcasecmp(objectclass->lDAPDisplayName, "nTDSDSA") != 0) {
455 rodc_control = ldb_request_get_control(ac->req, LDB_CONTROL_RODC_DCPROMO_OID);
460 rodc_control->critical = false;
464 static int objectclass_do_add(struct oc_context *ac)
466 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
467 struct ldb_request *add_req;
468 struct ldb_message_element *objectclass_element, *el;
469 struct ldb_message *msg;
471 struct class_list *sorted, *current;
472 const char *rdn_name = NULL;
474 const struct dsdb_class *objectclass;
475 struct ldb_dn *objectcategory;
476 int32_t systemFlags = 0;
481 msg = ldb_msg_copy_shallow(ac, ac->req->op.add.message);
483 return ldb_module_oom(ac->module);
486 /* Check if we have a valid parent - this check is needed since
487 * we don't get a LDB_ERR_NO_SUCH_OBJECT error. */
488 if (ac->search_res == NULL) {
489 unsigned int instanceType;
491 /* An add operation on partition DNs without "NC-add" operation
493 instanceType = ldb_msg_find_attr_as_uint(msg, "instanceType",
495 if (!(instanceType & INSTANCE_TYPE_IS_NC_HEAD)) {
496 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, parent does not exist!",
497 ldb_dn_get_linearized(msg->dn));
498 return LDB_ERR_NO_SUCH_OBJECT;
501 /* Don't keep any error messages - we've to add a partition */
502 ldb_set_errstring(ldb, NULL);
504 /* Fix up the DN to be in the standard form, taking
505 * particular care to match the parent DN */
506 ret = fix_dn(ldb, msg,
507 ac->req->op.add.message->dn,
508 ac->search_res->message->dn,
510 if (ret != LDB_SUCCESS) {
511 ldb_asprintf_errstring(ldb, "objectclass: Could not munge DN %s into normal form",
512 ldb_dn_get_linearized(ac->req->op.add.message->dn));
517 if (ac->schema != NULL) {
518 objectclass_element = ldb_msg_find_element(msg, "objectClass");
519 if (!objectclass_element) {
520 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, no objectclass specified!",
521 ldb_dn_get_linearized(msg->dn));
522 return LDB_ERR_OBJECT_CLASS_VIOLATION;
524 if (objectclass_element->num_values == 0) {
525 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, at least one (structural) objectclass has to be specified!",
526 ldb_dn_get_linearized(msg->dn));
527 return LDB_ERR_CONSTRAINT_VIOLATION;
530 mem_ctx = talloc_new(ac);
531 if (mem_ctx == NULL) {
532 return ldb_module_oom(ac->module);
535 /* Here we do now get the "objectClass" list from the
537 ret = objectclass_sort(ac->module, ac->schema, mem_ctx,
538 objectclass_element, &sorted);
539 if (ret != LDB_SUCCESS) {
540 talloc_free(mem_ctx);
544 ldb_msg_remove_element(msg, objectclass_element);
546 /* Well, now we shouldn't find any additional "objectClass"
547 * message element (required by the AD specification). */
548 objectclass_element = ldb_msg_find_element(msg, "objectClass");
549 if (objectclass_element != NULL) {
550 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, only one 'objectclass' attribute specification is allowed!",
551 ldb_dn_get_linearized(msg->dn));
552 talloc_free(mem_ctx);
553 return LDB_ERR_OBJECT_CLASS_VIOLATION;
556 /* We must completely replace the existing objectClass entry,
557 * because we need it sorted. */
558 ret = ldb_msg_add_empty(msg, "objectClass", 0, NULL);
559 if (ret != LDB_SUCCESS) {
560 talloc_free(mem_ctx);
564 /* Move from the linked list back into an ldb msg */
565 for (current = sorted; current; current = current->next) {
566 const char *objectclass_name = current->objectclass->lDAPDisplayName;
568 ret = ldb_msg_add_string(msg, "objectClass", objectclass_name);
569 if (ret != LDB_SUCCESS) {
570 ldb_set_errstring(ldb,
571 "objectclass: could not re-add sorted "
572 "objectclass to modify msg");
573 talloc_free(mem_ctx);
578 talloc_free(mem_ctx);
580 /* Retrive the message again so get_last_structural_class works */
581 objectclass_element = ldb_msg_find_element(msg, "objectClass");
583 /* Make sure its valid to add an object of this type */
584 objectclass = get_last_structural_class(ac->schema,
585 objectclass_element, ac->req);
586 if(objectclass == NULL) {
587 ldb_asprintf_errstring(ldb,
588 "Failed to find a structural class for %s",
589 ldb_dn_get_linearized(msg->dn));
590 return LDB_ERR_UNWILLING_TO_PERFORM;
593 rdn_name = ldb_dn_get_rdn_name(msg->dn);
594 if (rdn_name == NULL) {
595 return ldb_operr(ldb);
598 for (i = 0; (!found) && (i < objectclass_element->num_values);
600 const struct dsdb_class *tmp_class =
601 dsdb_class_by_lDAPDisplayName_ldb_val(ac->schema,
602 &objectclass_element->values[i]);
604 if (tmp_class == NULL) continue;
606 if (ldb_attr_cmp(rdn_name, tmp_class->rDNAttID) == 0)
610 ldb_asprintf_errstring(ldb,
611 "objectclass: Invalid RDN '%s' for objectclass '%s'!",
612 rdn_name, objectclass->lDAPDisplayName);
613 return LDB_ERR_NAMING_VIOLATION;
616 if (objectclass->systemOnly &&
617 !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
618 !check_rodc_ntdsdsa_add(ac, objectclass)) {
619 ldb_asprintf_errstring(ldb,
620 "objectclass: object class '%s' is system-only, rejecting creation of '%s'!",
621 objectclass->lDAPDisplayName,
622 ldb_dn_get_linearized(msg->dn));
623 return LDB_ERR_UNWILLING_TO_PERFORM;
626 if (ac->search_res && ac->search_res->message) {
627 struct ldb_message_element *oc_el
628 = ldb_msg_find_element(ac->search_res->message, "objectClass");
630 bool allowed_class = false;
631 for (i=0; allowed_class == false && oc_el && i < oc_el->num_values; i++) {
632 const struct dsdb_class *sclass;
634 sclass = dsdb_class_by_lDAPDisplayName_ldb_val(ac->schema,
637 /* We don't know this class? what is going on? */
640 for (j=0; sclass->systemPossibleInferiors && sclass->systemPossibleInferiors[j]; j++) {
641 if (ldb_attr_cmp(objectclass->lDAPDisplayName, sclass->systemPossibleInferiors[j]) == 0) {
642 allowed_class = true;
648 if (!allowed_class) {
649 ldb_asprintf_errstring(ldb, "structural objectClass %s is not a valid child class for %s",
650 objectclass->lDAPDisplayName, ldb_dn_get_linearized(ac->search_res->message->dn));
651 return LDB_ERR_NAMING_VIOLATION;
655 objectcategory = ldb_msg_find_attr_as_dn(ldb, ac, msg,
657 if (objectcategory == NULL) {
658 struct dsdb_extended_dn_store_format *dn_format =
659 talloc_get_type(ldb_module_get_private(ac->module),
660 struct dsdb_extended_dn_store_format);
661 if (dn_format && dn_format->store_extended_dn_in_ldb == false) {
662 /* Strip off extended components */
663 struct ldb_dn *dn = ldb_dn_new(ac, ldb,
664 objectclass->defaultObjectCategory);
665 value = ldb_dn_alloc_linearized(msg, dn);
668 value = talloc_strdup(msg,
669 objectclass->defaultObjectCategory);
672 return ldb_module_oom(ac->module);
675 ret = ldb_msg_add_string(msg, "objectCategory", value);
676 if (ret != LDB_SUCCESS) {
680 const struct dsdb_class *ocClass =
681 dsdb_class_by_cn_ldb_val(ac->schema,
682 ldb_dn_get_rdn_val(objectcategory));
683 if (ocClass != NULL) {
684 struct ldb_dn *dn = ldb_dn_new(ac, ldb,
685 ocClass->defaultObjectCategory);
686 if (ldb_dn_compare(objectcategory, dn) != 0) {
690 talloc_free(objectcategory);
691 if (ocClass == NULL) {
692 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, 'objectCategory' attribute invalid!",
693 ldb_dn_get_linearized(msg->dn));
694 return LDB_ERR_OBJECT_CLASS_VIOLATION;
698 if (!ldb_msg_find_element(msg, "showInAdvancedViewOnly") && (objectclass->defaultHidingValue == true)) {
699 ldb_msg_add_string(msg, "showInAdvancedViewOnly",
703 /* There are very special rules for systemFlags, see MS-ADTS
704 * MS-ADTS 3.1.1.5.2.4 */
706 el = ldb_msg_find_element(msg, "systemFlags");
707 if ((el != NULL) && (el->num_values > 1)) {
708 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, 'systemFlags' attribute multivalued!",
709 ldb_dn_get_linearized(msg->dn));
710 return LDB_ERR_CONSTRAINT_VIOLATION;
713 systemFlags = ldb_msg_find_attr_as_int(msg, "systemFlags", 0);
715 ldb_msg_remove_attr(msg, "systemFlags");
717 /* Only the following flags may be set by a client */
718 if (ldb_request_get_control(ac->req,
719 LDB_CONTROL_RELAX_OID) == NULL) {
720 systemFlags &= ( SYSTEM_FLAG_CONFIG_ALLOW_RENAME
721 | SYSTEM_FLAG_CONFIG_ALLOW_MOVE
722 | SYSTEM_FLAG_CONFIG_ALLOW_LIMITED_MOVE
723 | SYSTEM_FLAG_ATTR_IS_RDN );
726 /* But the last one ("ATTR_IS_RDN") is only allowed on
727 * "attributeSchema" objects. So truncate if it does not fit. */
728 if (ldb_attr_cmp(objectclass->lDAPDisplayName, "attributeSchema") != 0) {
729 systemFlags &= ~SYSTEM_FLAG_ATTR_IS_RDN;
732 if (ldb_attr_cmp(objectclass->lDAPDisplayName, "server") == 0) {
733 systemFlags |= (int32_t)(SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE | SYSTEM_FLAG_CONFIG_ALLOW_RENAME | SYSTEM_FLAG_CONFIG_ALLOW_LIMITED_MOVE);
734 } else if (ldb_attr_cmp(objectclass->lDAPDisplayName, "site") == 0
735 || ldb_attr_cmp(objectclass->lDAPDisplayName, "serversContainer") == 0
736 || ldb_attr_cmp(objectclass->lDAPDisplayName, "nTDSDSA") == 0) {
737 systemFlags |= (int32_t)(SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE);
739 } else if (ldb_attr_cmp(objectclass->lDAPDisplayName, "siteLink") == 0
740 || ldb_attr_cmp(objectclass->lDAPDisplayName, "siteLinkBridge") == 0
741 || ldb_attr_cmp(objectclass->lDAPDisplayName, "nTDSConnection") == 0) {
742 systemFlags |= (int32_t)(SYSTEM_FLAG_CONFIG_ALLOW_RENAME);
745 /* TODO: If parent object is site or subnet, also add (SYSTEM_FLAG_CONFIG_ALLOW_RENAME) */
747 if (el || systemFlags != 0) {
748 ret = samdb_msg_add_int(ldb, msg, msg, "systemFlags",
750 if (ret != LDB_SUCCESS) {
755 /* make sure that "isCriticalSystemObject" is not specified! */
756 el = ldb_msg_find_element(msg, "isCriticalSystemObject");
758 !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
759 ldb_set_errstring(ldb,
760 "objectclass: 'isCriticalSystemObject' must not be specified!");
761 return LDB_ERR_UNWILLING_TO_PERFORM;
765 ret = ldb_msg_sanity_check(ldb, msg);
766 if (ret != LDB_SUCCESS) {
770 ret = ldb_build_add_req(&add_req, ldb, ac,
775 LDB_REQ_SET_LOCATION(add_req);
776 if (ret != LDB_SUCCESS) {
780 /* perform the add */
781 return ldb_next_request(ac->module, add_req);
784 static int oc_modify_callback(struct ldb_request *req,
785 struct ldb_reply *ares);
786 static int objectclass_do_mod(struct oc_context *ac);
788 static int objectclass_modify(struct ldb_module *module, struct ldb_request *req)
790 struct ldb_context *ldb = ldb_module_get_ctx(module);
791 struct ldb_message_element *objectclass_element;
792 struct ldb_message *msg;
793 struct ldb_request *down_req;
794 struct oc_context *ac;
795 bool oc_changes = false;
798 ldb_debug(ldb, LDB_DEBUG_TRACE, "objectclass_modify\n");
800 /* do not manipulate our control entries */
801 if (ldb_dn_is_special(req->op.mod.message->dn)) {
802 return ldb_next_request(module, req);
805 /* As with the "real" AD we don't accept empty messages */
806 if (req->op.mod.message->num_elements == 0) {
807 ldb_set_errstring(ldb, "objectclass: modify message must have "
808 "elements/attributes!");
809 return LDB_ERR_UNWILLING_TO_PERFORM;
812 ac = oc_init_context(module, req);
814 return ldb_operr(ldb);
817 /* Without schema, there isn't much to do here */
818 if (ac->schema == NULL) {
820 return ldb_next_request(module, req);
823 msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
825 return ldb_module_oom(ac->module);
828 /* For now change everything except the objectclasses */
830 objectclass_element = ldb_msg_find_element(msg, "objectClass");
831 if (objectclass_element != NULL) {
832 ldb_msg_remove_attr(msg, "objectClass");
836 /* MS-ADTS 3.1.1.5.3.5 - on a forest level < 2003 we do allow updates
837 * only on application NCs - not on the default ones */
839 (dsdb_forest_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003)) {
840 struct ldb_dn *nc_root;
842 ret = dsdb_find_nc_root(ldb, ac, req->op.mod.message->dn,
844 if (ret != LDB_SUCCESS) {
848 if ((ldb_dn_compare(nc_root, ldb_get_default_basedn(ldb)) == 0) ||
849 (ldb_dn_compare(nc_root, ldb_get_config_basedn(ldb)) == 0) ||
850 (ldb_dn_compare(nc_root, ldb_get_schema_basedn(ldb)) == 0)) {
851 ldb_set_errstring(ldb,
852 "objectclass: object class changes on objects under the standard name contexts not allowed!");
853 return LDB_ERR_UNWILLING_TO_PERFORM;
856 talloc_free(nc_root);
859 ret = ldb_build_mod_req(&down_req, ldb, ac,
862 oc_changes ? oc_modify_callback : oc_op_callback,
864 LDB_REQ_SET_LOCATION(down_req);
865 if (ret != LDB_SUCCESS) {
869 return ldb_next_request(module, down_req);
872 static int oc_modify_callback(struct ldb_request *req, struct ldb_reply *ares)
874 static const char * const attrs[] = { "objectClass", NULL };
875 struct ldb_context *ldb;
876 struct ldb_request *search_req;
877 struct oc_context *ac;
880 ac = talloc_get_type(req->context, struct oc_context);
881 ldb = ldb_module_get_ctx(ac->module);
884 return ldb_module_done(ac->req, NULL, NULL,
885 LDB_ERR_OPERATIONS_ERROR);
888 if (ares->type == LDB_REPLY_REFERRAL) {
889 return ldb_module_send_referral(ac->req, ares->referral);
892 if (ares->error != LDB_SUCCESS) {
893 return ldb_module_done(ac->req, ares->controls,
894 ares->response, ares->error);
897 if (ares->type != LDB_REPLY_DONE) {
899 return ldb_module_done(ac->req, NULL, NULL,
900 LDB_ERR_OPERATIONS_ERROR);
905 /* this looks up the real existing object for fetching some important
906 * information (objectclasses) */
907 ret = ldb_build_search_req(&search_req, ldb,
908 ac, ac->req->op.mod.message->dn,
912 ac, get_search_callback,
914 LDB_REQ_SET_LOCATION(search_req);
915 if (ret != LDB_SUCCESS) {
916 return ldb_module_done(ac->req, NULL, NULL, ret);
919 ac->step_fn = objectclass_do_mod;
921 ret = ldb_next_request(ac->module, search_req);
922 if (ret != LDB_SUCCESS) {
923 return ldb_module_done(ac->req, NULL, NULL, ret);
929 static int objectclass_do_mod(struct oc_context *ac)
931 struct ldb_context *ldb;
932 struct ldb_request *mod_req;
934 struct ldb_message_element *oc_el_entry, *oc_el_change;
935 struct ldb_val *vals;
936 struct ldb_message *msg;
938 struct class_list *sorted, *current;
939 const struct dsdb_class *objectclass;
940 unsigned int i, j, k;
941 bool found, replace = false;
944 ldb = ldb_module_get_ctx(ac->module);
946 /* we should always have a valid entry when we enter here */
947 if (ac->search_res == NULL) {
948 return ldb_operr(ldb);
951 oc_el_entry = ldb_msg_find_element(ac->search_res->message,
953 if (oc_el_entry == NULL) {
954 /* existing entry without a valid object class? */
955 return ldb_operr(ldb);
958 /* use a new message structure */
959 msg = ldb_msg_new(ac);
961 return ldb_module_oom(ac->module);
964 msg->dn = ac->req->op.mod.message->dn;
966 mem_ctx = talloc_new(ac);
967 if (mem_ctx == NULL) {
968 return ldb_module_oom(ac->module);
971 /* We've to walk over all "objectClass" message elements */
972 for (k = 0; k < ac->req->op.mod.message->num_elements; k++) {
973 if (ldb_attr_cmp(ac->req->op.mod.message->elements[k].name,
974 "objectClass") != 0) {
978 oc_el_change = &ac->req->op.mod.message->elements[k];
980 switch (oc_el_change->flags & LDB_FLAG_MOD_MASK) {
981 case LDB_FLAG_MOD_ADD:
982 /* Merge the two message elements */
983 for (i = 0; i < oc_el_change->num_values; i++) {
984 for (j = 0; j < oc_el_entry->num_values; j++) {
985 if (ldb_attr_cmp((char *)oc_el_change->values[i].data,
986 (char *)oc_el_entry->values[j].data) == 0) {
987 ldb_asprintf_errstring(ldb,
988 "objectclass: cannot re-add an existing objectclass: '%.*s'!",
989 (int)oc_el_change->values[i].length,
990 (const char *)oc_el_change->values[i].data);
991 talloc_free(mem_ctx);
992 return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
995 /* append the new object class value - code was
996 * copied from "ldb_msg_add_value" */
997 vals = talloc_realloc(oc_el_entry, oc_el_entry->values,
999 oc_el_entry->num_values + 1);
1001 talloc_free(mem_ctx);
1002 return ldb_module_oom(ac->module);
1004 oc_el_entry->values = vals;
1005 oc_el_entry->values[oc_el_entry->num_values] =
1006 oc_el_change->values[i];
1007 ++(oc_el_entry->num_values);
1010 objectclass = get_last_structural_class(ac->schema,
1011 oc_el_change, ac->req);
1012 if (objectclass != NULL) {
1013 ldb_asprintf_errstring(ldb,
1014 "objectclass: cannot add a new top-most structural objectclass '%s'!",
1015 objectclass->lDAPDisplayName);
1016 talloc_free(mem_ctx);
1017 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1020 /* Now do the sorting */
1021 ret = objectclass_sort(ac->module, ac->schema, mem_ctx,
1022 oc_el_entry, &sorted);
1023 if (ret != LDB_SUCCESS) {
1024 talloc_free(mem_ctx);
1030 case LDB_FLAG_MOD_REPLACE:
1031 /* Do the sorting for the change message element */
1032 ret = objectclass_sort(ac->module, ac->schema, mem_ctx,
1033 oc_el_change, &sorted);
1034 if (ret != LDB_SUCCESS) {
1035 talloc_free(mem_ctx);
1039 /* this is a replace */
1044 case LDB_FLAG_MOD_DELETE:
1045 /* get the actual top-most structural objectclass */
1046 objectclass = get_last_structural_class(ac->schema,
1047 oc_el_entry, ac->req);
1048 if (objectclass == NULL) {
1049 /* no structural objectclass? */
1050 talloc_free(mem_ctx);
1051 return ldb_operr(ldb);
1054 /* Merge the two message elements */
1055 for (i = 0; i < oc_el_change->num_values; i++) {
1057 for (j = 0; j < oc_el_entry->num_values; j++) {
1058 if (ldb_attr_cmp((char *)oc_el_change->values[i].data,
1059 (char *)oc_el_entry->values[j].data) == 0) {
1061 /* delete the object class value
1062 * - code was copied from
1063 * "ldb_msg_remove_element" */
1064 if (j != oc_el_entry->num_values - 1) {
1065 memmove(&oc_el_entry->values[j],
1066 &oc_el_entry->values[j+1],
1067 ((oc_el_entry->num_values-1) - j)*sizeof(struct ldb_val));
1069 --(oc_el_entry->num_values);
1074 /* we cannot delete a not existing
1076 ldb_asprintf_errstring(ldb,
1077 "objectclass: cannot delete this objectclass: '%.*s'!",
1078 (int)oc_el_change->values[i].length,
1079 (const char *)oc_el_change->values[i].data);
1080 talloc_free(mem_ctx);
1081 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1085 /* Make sure that the top-most structural object class
1086 * hasn't been deleted */
1088 for (i = 0; i < oc_el_entry->num_values; i++) {
1089 if (ldb_attr_cmp(objectclass->lDAPDisplayName,
1090 (char *)oc_el_entry->values[i].data) == 0) {
1096 ldb_asprintf_errstring(ldb,
1097 "objectclass: cannot delete the top-most structural objectclass '%s'!",
1098 objectclass->lDAPDisplayName);
1099 talloc_free(mem_ctx);
1100 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1103 /* Now do the sorting */
1104 ret = objectclass_sort(ac->module, ac->schema, mem_ctx,
1105 oc_el_entry, &sorted);
1106 if (ret != LDB_SUCCESS) {
1107 talloc_free(mem_ctx);
1114 /* (Re)-add an empty "objectClass" attribute on the object
1115 * classes change message "msg". */
1116 ldb_msg_remove_attr(msg, "objectClass");
1117 ret = ldb_msg_add_empty(msg, "objectClass",
1118 LDB_FLAG_MOD_REPLACE, &oc_el_change);
1119 if (ret != LDB_SUCCESS) {
1120 talloc_free(mem_ctx);
1124 /* Move from the linked list back into an ldb msg */
1125 for (current = sorted; current; current = current->next) {
1126 value = talloc_strdup(msg,
1127 current->objectclass->lDAPDisplayName);
1128 if (value == NULL) {
1129 talloc_free(mem_ctx);
1130 return ldb_module_oom(ac->module);
1132 ret = ldb_msg_add_string(msg, "objectClass", value);
1133 if (ret != LDB_SUCCESS) {
1134 ldb_set_errstring(ldb,
1135 "objectclass: could not re-add sorted objectclasses!");
1136 talloc_free(mem_ctx);
1142 /* Well, on replace we are nearly done: we have to test
1143 * if the change and entry message element are identical
1144 * ly. We can use "ldb_msg_element_compare" since now
1145 * the specified objectclasses match for sure in case.
1147 ret = ldb_msg_element_compare(oc_el_entry,
1150 ret = ldb_msg_element_compare(oc_el_change,
1154 /* they are the same so we are done in this
1156 talloc_free(mem_ctx);
1157 return ldb_module_done(ac->req, NULL, NULL,
1160 ldb_set_errstring(ldb,
1161 "objectclass: the specified objectclasses are not exactly the same as on the entry!");
1162 talloc_free(mem_ctx);
1163 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1167 /* Now we've applied all changes from "oc_el_change" to
1168 * "oc_el_entry" therefore the new "oc_el_entry" will be
1169 * "oc_el_change". */
1170 oc_el_entry = oc_el_change;
1173 talloc_free(mem_ctx);
1175 /* Now we have the real and definitive change left to do */
1177 ret = ldb_build_mod_req(&mod_req, ldb, ac,
1182 LDB_REQ_SET_LOCATION(mod_req);
1183 if (ret != LDB_SUCCESS) {
1187 return ldb_next_request(ac->module, mod_req);
1190 static int objectclass_do_rename(struct oc_context *ac);
1192 static int objectclass_rename(struct ldb_module *module, struct ldb_request *req)
1194 static const char * const attrs[] = { "objectClass", NULL };
1195 struct ldb_context *ldb;
1196 struct ldb_request *search_req;
1197 struct oc_context *ac;
1198 struct ldb_dn *parent_dn;
1201 ldb = ldb_module_get_ctx(module);
1203 ldb_debug(ldb, LDB_DEBUG_TRACE, "objectclass_rename\n");
1205 /* do not manipulate our control entries */
1206 if (ldb_dn_is_special(req->op.rename.olddn)) {
1207 return ldb_next_request(module, req);
1210 ac = oc_init_context(module, req);
1212 return ldb_operr(ldb);
1215 parent_dn = ldb_dn_get_parent(ac, req->op.rename.newdn);
1216 if (parent_dn == NULL) {
1217 ldb_asprintf_errstring(ldb, "objectclass: Cannot rename %s, the parent DN does not exist!",
1218 ldb_dn_get_linearized(req->op.rename.olddn));
1219 return LDB_ERR_NO_SUCH_OBJECT;
1222 /* this looks up the parent object for fetching some important
1223 * information (objectclasses, DN normalisation...) */
1224 ret = ldb_build_search_req(&search_req, ldb,
1225 ac, parent_dn, LDB_SCOPE_BASE,
1228 ac, get_search_callback,
1230 LDB_REQ_SET_LOCATION(search_req);
1231 if (ret != LDB_SUCCESS) {
1235 /* we have to add the show recycled control, as otherwise DRS
1236 deletes will be refused as we will think the target parent
1238 ret = ldb_request_add_control(search_req, LDB_CONTROL_SHOW_RECYCLED_OID,
1241 if (ret != LDB_SUCCESS) {
1245 ac->step_fn = objectclass_do_rename;
1247 return ldb_next_request(ac->module, search_req);
1250 static int objectclass_do_rename2(struct oc_context *ac);
1252 static int objectclass_do_rename(struct oc_context *ac)
1254 static const char * const attrs[] = { "objectClass", NULL };
1255 struct ldb_context *ldb;
1256 struct ldb_request *search_req;
1259 ldb = ldb_module_get_ctx(ac->module);
1261 /* Check if we have a valid parent - this check is needed since
1262 * we don't get a LDB_ERR_NO_SUCH_OBJECT error. */
1263 if (ac->search_res == NULL) {
1264 ldb_asprintf_errstring(ldb, "objectclass: Cannot rename %s, parent does not exist!",
1265 ldb_dn_get_linearized(ac->req->op.rename.olddn));
1266 return LDB_ERR_OTHER;
1269 /* now assign "search_res2" to the parent entry to have "search_res"
1270 * free for another lookup */
1271 ac->search_res2 = ac->search_res;
1272 ac->search_res = NULL;
1274 /* this looks up the real existing object for fetching some important
1275 * information (objectclasses) */
1276 ret = ldb_build_search_req(&search_req, ldb,
1277 ac, ac->req->op.rename.olddn,
1281 ac, get_search_callback,
1283 LDB_REQ_SET_LOCATION(search_req);
1284 if (ret != LDB_SUCCESS) {
1288 ac->step_fn = objectclass_do_rename2;
1290 return ldb_next_request(ac->module, search_req);
1293 static int objectclass_do_rename2(struct oc_context *ac)
1295 struct ldb_context *ldb;
1296 struct ldb_request *rename_req;
1297 struct ldb_dn *fixed_dn;
1300 ldb = ldb_module_get_ctx(ac->module);
1302 /* Check if we have a valid entry - this check is needed since
1303 * we don't get a LDB_ERR_NO_SUCH_OBJECT error. */
1304 if (ac->search_res == NULL) {
1305 ldb_asprintf_errstring(ldb, "objectclass: Cannot rename %s, entry does not exist!",
1306 ldb_dn_get_linearized(ac->req->op.rename.olddn));
1307 return LDB_ERR_NO_SUCH_OBJECT;
1310 if (ac->schema != NULL) {
1311 struct ldb_message_element *oc_el_entry, *oc_el_parent;
1312 const struct dsdb_class *objectclass;
1313 const char *rdn_name;
1314 bool allowed_class = false;
1318 oc_el_entry = ldb_msg_find_element(ac->search_res->message,
1320 if (oc_el_entry == NULL) {
1321 /* existing entry without a valid object class? */
1322 return ldb_operr(ldb);
1324 objectclass = get_last_structural_class(ac->schema, oc_el_entry, ac->req);
1325 if (objectclass == NULL) {
1326 /* existing entry without a valid object class? */
1327 return ldb_operr(ldb);
1330 rdn_name = ldb_dn_get_rdn_name(ac->req->op.rename.newdn);
1331 if (rdn_name == NULL) {
1332 return ldb_operr(ldb);
1335 for (i = 0; (!found) && (i < oc_el_entry->num_values); i++) {
1336 const struct dsdb_class *tmp_class =
1337 dsdb_class_by_lDAPDisplayName_ldb_val(ac->schema,
1338 &oc_el_entry->values[i]);
1340 if (tmp_class == NULL) continue;
1342 if (ldb_attr_cmp(rdn_name, tmp_class->rDNAttID) == 0)
1346 ldb_asprintf_errstring(ldb,
1347 "objectclass: Invalid RDN '%s' for objectclass '%s'!",
1348 rdn_name, objectclass->lDAPDisplayName);
1349 return LDB_ERR_UNWILLING_TO_PERFORM;
1352 oc_el_parent = ldb_msg_find_element(ac->search_res2->message,
1354 if (oc_el_parent == NULL) {
1355 /* existing entry without a valid object class? */
1356 return ldb_operr(ldb);
1359 for (i=0; allowed_class == false && i < oc_el_parent->num_values; i++) {
1360 const struct dsdb_class *sclass;
1362 sclass = dsdb_class_by_lDAPDisplayName_ldb_val(ac->schema,
1363 &oc_el_parent->values[i]);
1365 /* We don't know this class? what is going on? */
1368 for (j=0; sclass->systemPossibleInferiors && sclass->systemPossibleInferiors[j]; j++) {
1369 if (ldb_attr_cmp(objectclass->lDAPDisplayName, sclass->systemPossibleInferiors[j]) == 0) {
1370 allowed_class = true;
1376 if (!allowed_class) {
1377 ldb_asprintf_errstring(ldb,
1378 "objectclass: structural objectClass %s is not a valid child class for %s",
1379 objectclass->lDAPDisplayName, ldb_dn_get_linearized(ac->search_res2->message->dn));
1380 return LDB_ERR_NAMING_VIOLATION;
1384 /* Ensure we are not trying to rename it to be a child of itself */
1385 if ((ldb_dn_compare_base(ac->req->op.rename.olddn,
1386 ac->req->op.rename.newdn) == 0) &&
1387 (ldb_dn_compare(ac->req->op.rename.olddn,
1388 ac->req->op.rename.newdn) != 0)) {
1389 ldb_asprintf_errstring(ldb, "objectclass: Cannot rename %s to be a child of itself",
1390 ldb_dn_get_linearized(ac->req->op.rename.olddn));
1391 return LDB_ERR_UNWILLING_TO_PERFORM;
1394 /* Fix up the DN to be in the standard form, taking
1395 * particular care to match the parent DN */
1396 ret = fix_dn(ldb, ac,
1397 ac->req->op.rename.newdn,
1398 ac->search_res2->message->dn,
1400 if (ret != LDB_SUCCESS) {
1401 ldb_asprintf_errstring(ldb, "objectclass: Could not munge DN %s into normal form",
1402 ldb_dn_get_linearized(ac->req->op.rename.newdn));
1407 ret = ldb_build_rename_req(&rename_req, ldb, ac,
1408 ac->req->op.rename.olddn, fixed_dn,
1412 LDB_REQ_SET_LOCATION(rename_req);
1413 if (ret != LDB_SUCCESS) {
1417 /* perform the rename */
1418 return ldb_next_request(ac->module, rename_req);
1421 static int objectclass_do_delete(struct oc_context *ac);
1423 static int objectclass_delete(struct ldb_module *module, struct ldb_request *req)
1425 static const char * const attrs[] = { "nCName", "objectClass",
1427 "isCriticalSystemObject", NULL };
1428 struct ldb_context *ldb;
1429 struct ldb_request *search_req;
1430 struct oc_context *ac;
1433 ldb = ldb_module_get_ctx(module);
1435 ldb_debug(ldb, LDB_DEBUG_TRACE, "objectclass_delete\n");
1437 /* do not manipulate our control entries */
1438 if (ldb_dn_is_special(req->op.del.dn)) {
1439 return ldb_next_request(module, req);
1442 /* Bypass the constraint checks when we do have the "RELAX" control
1444 if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID) != NULL) {
1445 return ldb_next_request(module, req);
1448 ac = oc_init_context(module, req);
1450 return ldb_operr(ldb);
1453 /* this looks up the entry object for fetching some important
1454 * information (object classes, system flags...) */
1455 ret = ldb_build_search_req(&search_req, ldb,
1456 ac, req->op.del.dn, LDB_SCOPE_BASE,
1459 ac, get_search_callback,
1461 LDB_REQ_SET_LOCATION(search_req);
1462 if (ret != LDB_SUCCESS) {
1466 ac->step_fn = objectclass_do_delete;
1468 return ldb_next_request(ac->module, search_req);
1471 static int objectclass_do_delete(struct oc_context *ac)
1473 struct ldb_context *ldb;
1475 int32_t systemFlags;
1476 bool isCriticalSystemObject;
1479 ldb = ldb_module_get_ctx(ac->module);
1481 /* Check if we have a valid entry - this check is needed since
1482 * we don't get a LDB_ERR_NO_SUCH_OBJECT error. */
1483 if (ac->search_res == NULL) {
1484 ldb_asprintf_errstring(ldb, "objectclass: Cannot delete %s, entry does not exist!",
1485 ldb_dn_get_linearized(ac->req->op.del.dn));
1486 return LDB_ERR_NO_SUCH_OBJECT;
1489 /* DC's ntDSDSA object */
1490 if (ldb_dn_compare(ac->req->op.del.dn, samdb_ntds_settings_dn(ldb)) == 0) {
1491 ldb_asprintf_errstring(ldb, "objectclass: Cannot delete %s, it's the DC's ntDSDSA object!",
1492 ldb_dn_get_linearized(ac->req->op.del.dn));
1493 return LDB_ERR_UNWILLING_TO_PERFORM;
1496 /* DC's rIDSet object */
1497 /* Perform this check only when it does exist - this is needed in order
1498 * to don't let existing provisions break. */
1499 ret = samdb_rid_set_dn(ldb, ac, &dn);
1500 if ((ret != LDB_SUCCESS) && (ret != LDB_ERR_NO_SUCH_OBJECT)) {
1503 if (ret == LDB_SUCCESS) {
1504 if (ldb_dn_compare(ac->req->op.del.dn, dn) == 0) {
1506 ldb_asprintf_errstring(ldb, "objectclass: Cannot delete %s, it's the DC's rIDSet object!",
1507 ldb_dn_get_linearized(ac->req->op.del.dn));
1508 return LDB_ERR_UNWILLING_TO_PERFORM;
1513 /* crossRef objects regarding config, schema and default domain NCs */
1514 if (samdb_find_attribute(ldb, ac->search_res->message, "objectClass",
1515 "crossRef") != NULL) {
1516 dn = ldb_msg_find_attr_as_dn(ldb, ac, ac->search_res->message,
1518 if ((ldb_dn_compare(dn, ldb_get_default_basedn(ldb)) == 0) ||
1519 (ldb_dn_compare(dn, ldb_get_config_basedn(ldb)) == 0)) {
1522 ldb_asprintf_errstring(ldb, "objectclass: Cannot delete %s, it's a crossRef object to the main or configuration partition!",
1523 ldb_dn_get_linearized(ac->req->op.del.dn));
1524 return LDB_ERR_NOT_ALLOWED_ON_NON_LEAF;
1526 if (ldb_dn_compare(dn, ldb_get_schema_basedn(ldb)) == 0) {
1529 ldb_asprintf_errstring(ldb, "objectclass: Cannot delete %s, it's a crossRef object to the schema partition!",
1530 ldb_dn_get_linearized(ac->req->op.del.dn));
1531 return LDB_ERR_UNWILLING_TO_PERFORM;
1538 systemFlags = ldb_msg_find_attr_as_int(ac->search_res->message,
1540 if ((systemFlags & SYSTEM_FLAG_DISALLOW_DELETE) != 0) {
1541 ldb_asprintf_errstring(ldb, "objectclass: Cannot delete %s, it isn't permitted!",
1542 ldb_dn_get_linearized(ac->req->op.del.dn));
1543 return LDB_ERR_UNWILLING_TO_PERFORM;
1546 /* isCriticalSystemObject - but this only applies on tree delete
1547 * operations - MS-ADTS 3.1.1.5.5.7.2 */
1548 if (ldb_request_get_control(ac->req, LDB_CONTROL_TREE_DELETE_OID) != NULL) {
1549 isCriticalSystemObject = ldb_msg_find_attr_as_bool(ac->search_res->message,
1550 "isCriticalSystemObject", false);
1551 if (isCriticalSystemObject) {
1552 ldb_asprintf_errstring(ldb,
1553 "objectclass: Cannot tree-delete %s, it's a critical system object!",
1554 ldb_dn_get_linearized(ac->req->op.del.dn));
1555 return LDB_ERR_UNWILLING_TO_PERFORM;
1559 return ldb_next_request(ac->module, ac->req);
1562 static int objectclass_init(struct ldb_module *module)
1564 struct ldb_context *ldb = ldb_module_get_ctx(module);
1567 /* Init everything else */
1568 ret = ldb_next_init(module);
1569 if (ret != LDB_SUCCESS) {
1573 /* Look for the opaque to indicate we might have to cut down the DN of defaultObjectCategory */
1574 ldb_module_set_private(module, ldb_get_opaque(ldb, DSDB_EXTENDED_DN_STORE_FORMAT_OPAQUE_NAME));
1576 ret = ldb_mod_register_control(module, LDB_CONTROL_RODC_DCPROMO_OID);
1577 if (ret != LDB_SUCCESS) {
1578 ldb_debug(ldb, LDB_DEBUG_ERROR,
1579 "objectclass_init: Unable to register control DCPROMO with rootdse\n");
1580 return ldb_operr(ldb);
1586 static const struct ldb_module_ops ldb_objectclass_module_ops = {
1587 .name = "objectclass",
1588 .add = objectclass_add,
1589 .modify = objectclass_modify,
1590 .rename = objectclass_rename,
1591 .del = objectclass_delete,
1592 .init_context = objectclass_init
1595 int ldb_objectclass_module_init(const char *version)
1597 LDB_MODULE_CHECK_VERSION(version);
1598 return ldb_register_module(&ldb_objectclass_module_ops);