4 Copyright (C) Simo Sorce 2006-2008
5 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2007
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * Component: objectClass sorting module
27 * - sort the objectClass attribute into the class
29 * - fix DNs and attributes into 'standard' case
30 * - Add objectCategory and ntSecurityDescriptor defaults
32 * Author: Andrew Bartlett
37 #include "ldb_module.h"
38 #include "dlinklist.h"
39 #include "dsdb/samdb/samdb.h"
40 #include "librpc/ndr/libndr.h"
41 #include "librpc/gen_ndr/ndr_security.h"
42 #include "libcli/security/security.h"
43 #include "auth/auth.h"
44 #include "param/param.h"
48 struct ldb_module *module;
49 struct ldb_request *req;
51 struct ldb_reply *search_res;
53 int (*step_fn)(struct oc_context *);
57 struct class_list *prev, *next;
58 const struct dsdb_class *objectclass;
61 static struct oc_context *oc_init_context(struct ldb_module *module,
62 struct ldb_request *req)
64 struct ldb_context *ldb;
65 struct oc_context *ac;
67 ldb = ldb_module_get_ctx(module);
69 ac = talloc_zero(req, struct oc_context);
71 ldb_set_errstring(ldb, "Out of Memory");
81 static int objectclass_do_add(struct oc_context *ac);
83 /* Sort objectClasses into correct order, and validate that all
84 * objectClasses specified actually exist in the schema
87 static int objectclass_sort(struct ldb_module *module,
88 const struct dsdb_schema *schema,
90 struct ldb_message_element *objectclass_element,
91 struct class_list **sorted_out)
93 struct ldb_context *ldb;
96 struct class_list *sorted = NULL, *parent_class = NULL,
97 *subclass = NULL, *unsorted = NULL, *current, *poss_subclass, *poss_parent, *new_parent;
99 ldb = ldb_module_get_ctx(module);
103 * We work on 4 different 'bins' (implemented here as linked lists):
105 * * sorted: the eventual list, in the order we wish to push
106 * into the database. This is the only ordered list.
108 * * parent_class: The current parent class 'bin' we are
109 * trying to find subclasses for
111 * * subclass: The subclasses we have found so far
113 * * unsorted: The remaining objectClasses
115 * The process is a matter of filtering objectClasses up from
116 * unsorted into sorted. Order is irrelevent in the later 3 'bins'.
118 * We start with 'top' (found and promoted to parent_class
119 * initially). Then we find (in unsorted) all the direct
120 * subclasses of 'top'. parent_classes is concatenated onto
121 * the end of 'sorted', and subclass becomes the list in
124 * We then repeat, until we find no more subclasses. Any left
125 * over classes are added to the end.
129 /* Firstly, dump all the objectClass elements into the
130 * unsorted bin, except for 'top', which is special */
131 for (i=0; i < objectclass_element->num_values; i++) {
132 current = talloc(mem_ctx, struct class_list);
135 return LDB_ERR_OPERATIONS_ERROR;
137 current->objectclass = dsdb_class_by_lDAPDisplayName_ldb_val(schema, &objectclass_element->values[i]);
138 if (!current->objectclass) {
139 ldb_asprintf_errstring(ldb, "objectclass %.*s is not a valid objectClass in schema",
140 (int)objectclass_element->values[i].length, (const char *)objectclass_element->values[i].data);
141 return LDB_ERR_OBJECT_CLASS_VIOLATION;
144 /* this is the root of the tree. We will start
145 * looking for subclasses from here */
146 if (ldb_attr_cmp("top", current->objectclass->lDAPDisplayName) == 0) {
147 DLIST_ADD_END(parent_class, current, struct class_list *);
149 DLIST_ADD_END(unsorted, current, struct class_list *);
153 if (parent_class == NULL) {
154 current = talloc(mem_ctx, struct class_list);
155 current->objectclass = dsdb_class_by_lDAPDisplayName(schema, "top");
156 DLIST_ADD_END(parent_class, current, struct class_list *);
159 /* For each object: find parent chain */
160 for (current = unsorted; schema && current; current = current->next) {
161 for (poss_parent = unsorted; poss_parent; poss_parent = poss_parent->next) {
162 if (ldb_attr_cmp(poss_parent->objectclass->lDAPDisplayName, current->objectclass->subClassOf) == 0) {
166 /* If we didn't get to the end of the list, we need to add this parent */
167 if (poss_parent || (ldb_attr_cmp("top", current->objectclass->subClassOf) == 0)) {
171 new_parent = talloc(mem_ctx, struct class_list);
172 new_parent->objectclass = dsdb_class_by_lDAPDisplayName(schema, current->objectclass->subClassOf);
173 DLIST_ADD_END(unsorted, new_parent, struct class_list *);
176 /* DEBUGGING aid: how many layers are we down now? */
180 /* Find all the subclasses of classes in the
181 * parent_classes. Push them onto the subclass list */
183 /* Ensure we don't bother if there are no unsorted entries left */
184 for (current = parent_class; schema && unsorted && current; current = current->next) {
185 /* Walk the list of possible subclasses in unsorted */
186 for (poss_subclass = unsorted; poss_subclass; ) {
187 struct class_list *next;
189 /* Save the next pointer, as the DLIST_ macros will change poss_subclass->next */
190 next = poss_subclass->next;
192 if (ldb_attr_cmp(poss_subclass->objectclass->subClassOf, current->objectclass->lDAPDisplayName) == 0) {
193 DLIST_REMOVE(unsorted, poss_subclass);
194 DLIST_ADD(subclass, poss_subclass);
198 poss_subclass = next;
202 /* Now push the parent_classes as sorted, we are done with
203 these. Add to the END of the list by concatenation */
204 DLIST_CONCATENATE(sorted, parent_class, struct class_list *);
206 /* and now find subclasses of these */
207 parent_class = subclass;
210 /* If we didn't find any subclasses we will fall out
212 } while (parent_class);
215 *sorted_out = sorted;
220 /* If we don't have schema yet, then just merge the lists again */
221 DLIST_CONCATENATE(sorted, unsorted, struct class_list *);
222 *sorted_out = sorted;
226 /* This shouldn't happen, and would break MMC, perhaps there
227 * was no 'top', a conflict in the objectClasses or some other
230 ldb_asprintf_errstring(ldb, "objectclass %s is not a valid objectClass in objectClass chain", unsorted->objectclass->lDAPDisplayName);
231 return LDB_ERR_OBJECT_CLASS_VIOLATION;
234 static int get_search_callback(struct ldb_request *req, struct ldb_reply *ares)
236 struct ldb_context *ldb;
237 struct oc_context *ac;
240 ac = talloc_get_type(req->context, struct oc_context);
241 ldb = ldb_module_get_ctx(ac->module);
244 return ldb_module_done(ac->req, NULL, NULL,
245 LDB_ERR_OPERATIONS_ERROR);
247 if (ares->error != LDB_SUCCESS &&
248 ares->error != LDB_ERR_NO_SUCH_OBJECT) {
249 return ldb_module_done(ac->req, ares->controls,
250 ares->response, ares->error);
253 ldb_reset_err_string(ldb);
255 switch (ares->type) {
256 case LDB_REPLY_ENTRY:
257 if (ac->search_res != NULL) {
258 ldb_set_errstring(ldb, "Too many results");
260 return ldb_module_done(ac->req, NULL, NULL,
261 LDB_ERR_OPERATIONS_ERROR);
264 ac->search_res = talloc_steal(ac, ares);
267 case LDB_REPLY_REFERRAL:
274 ret = ac->step_fn(ac);
275 if (ret != LDB_SUCCESS) {
276 return ldb_module_done(ac->req, NULL, NULL, ret);
284 static int oc_op_callback(struct ldb_request *req, struct ldb_reply *ares)
286 struct oc_context *ac;
288 ac = talloc_get_type(req->context, struct oc_context);
291 return ldb_module_done(ac->req, NULL, NULL,
292 LDB_ERR_OPERATIONS_ERROR);
294 if (ares->error != LDB_SUCCESS) {
295 return ldb_module_done(ac->req, ares->controls,
296 ares->response, ares->error);
299 if (ares->type != LDB_REPLY_DONE) {
301 return ldb_module_done(ac->req, NULL, NULL,
302 LDB_ERR_OPERATIONS_ERROR);
305 return ldb_module_done(ac->req, ares->controls,
306 ares->response, ares->error);
309 /* Fix up the DN to be in the standard form, taking particular care to match the parent DN
311 This should mean that if the parent is:
312 CN=Users,DC=samba,DC=example,DC=com
313 and a proposed child is
314 cn=Admins ,cn=USERS,dc=Samba,dc=example,dc=COM
316 The resulting DN should be:
318 CN=Admins,CN=Users,DC=samba,DC=example,DC=com
321 static int fix_dn(TALLOC_CTX *mem_ctx,
322 struct ldb_dn *newdn, struct ldb_dn *parent_dn,
323 struct ldb_dn **fixed_dn)
325 char *upper_rdn_attr;
326 /* Fix up the DN to be in the standard form, taking particular care to match the parent DN */
327 *fixed_dn = ldb_dn_copy(mem_ctx, parent_dn);
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) {
333 return LDB_ERR_OPERATIONS_ERROR;
336 /* Create a new child */
337 if (ldb_dn_add_child_fmt(*fixed_dn, "X=X") == false) {
338 return LDB_ERR_OPERATIONS_ERROR;
341 /* And replace it with CN=foo (we need the attribute in upper case */
342 return ldb_dn_set_component(*fixed_dn, 0, upper_rdn_attr,
343 *ldb_dn_get_rdn_val(newdn));
346 /* Fix all attribute names to be in the correct case, and check they are all valid per the schema */
347 static int fix_attributes(struct ldb_context *ldb, const struct dsdb_schema *schema, struct ldb_message *msg)
350 for (i=0; i < msg->num_elements; i++) {
351 const struct dsdb_attribute *attribute = dsdb_attribute_by_lDAPDisplayName(schema, msg->elements[i].name);
352 /* Add in a very special case for 'clearTextPassword',
353 * which is used for internal processing only, and is
354 * not presented in the schema */
356 if (strcasecmp(msg->elements[i].name, "clearTextPassword") != 0) {
357 ldb_asprintf_errstring(ldb, "attribute %s is not a valid attribute in schema", msg->elements[i].name);
358 return LDB_ERR_UNDEFINED_ATTRIBUTE_TYPE;
361 msg->elements[i].name = attribute->lDAPDisplayName;
368 static int objectclass_do_add(struct oc_context *ac);
370 static int objectclass_add(struct ldb_module *module, struct ldb_request *req)
372 struct ldb_context *ldb;
373 struct ldb_request *search_req;
374 struct oc_context *ac;
375 struct ldb_dn *parent_dn;
377 static const char * const parent_attrs[] = { "objectGUID", NULL };
379 ldb = ldb_module_get_ctx(module);
381 ldb_debug(ldb, LDB_DEBUG_TRACE, "objectclass_add\n");
383 /* do not manipulate our control entries */
384 if (ldb_dn_is_special(req->op.add.message->dn)) {
385 return ldb_next_request(module, req);
388 /* the objectClass must be specified on add */
389 if (ldb_msg_find_element(req->op.add.message,
390 "objectClass") == NULL) {
391 return LDB_ERR_OBJECT_CLASS_VIOLATION;
394 ac = oc_init_context(module, req);
396 return LDB_ERR_OPERATIONS_ERROR;
399 /* If there isn't a parent, just go on to the add processing */
400 if (ldb_dn_get_comp_num(ac->req->op.add.message->dn) == 1) {
401 return objectclass_do_add(ac);
404 /* get copy of parent DN */
405 parent_dn = ldb_dn_get_parent(ac, ac->req->op.add.message->dn);
406 if (parent_dn == NULL) {
408 return LDB_ERR_OPERATIONS_ERROR;
411 ret = ldb_build_search_req(&search_req, ldb,
412 ac, parent_dn, LDB_SCOPE_BASE,
413 "(objectClass=*)", parent_attrs,
415 ac, get_search_callback,
417 if (ret != LDB_SUCCESS) {
420 talloc_steal(search_req, parent_dn);
422 ac->step_fn = objectclass_do_add;
424 return ldb_next_request(ac->module, search_req);
427 static int objectclass_do_add(struct oc_context *ac)
429 struct ldb_context *ldb;
430 const struct dsdb_schema *schema;
431 struct ldb_request *add_req;
433 struct ldb_message_element *objectclass_element;
434 struct ldb_message *msg;
436 struct class_list *sorted, *current;
439 ldb = ldb_module_get_ctx(ac->module);
440 schema = dsdb_get_schema(ldb);
442 mem_ctx = talloc_new(ac);
443 if (mem_ctx == NULL) {
444 return LDB_ERR_OPERATIONS_ERROR;
447 msg = ldb_msg_copy_shallow(ac, ac->req->op.add.message);
449 /* Check we have a valid parent */
450 if (ac->search_res == NULL) {
451 if (ldb_dn_compare(ldb_get_root_basedn(ldb),
453 /* Allow the tree to be started */
455 /* but don't keep any error string, it's meaningless */
456 ldb_set_errstring(ldb, NULL);
458 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, parent does not exist!",
459 ldb_dn_get_linearized(msg->dn));
460 talloc_free(mem_ctx);
461 return LDB_ERR_UNWILLING_TO_PERFORM;
464 const struct ldb_val *parent_guid;
466 /* Fix up the DN to be in the standard form, taking particular care to match the parent DN */
468 ac->req->op.add.message->dn,
469 ac->search_res->message->dn,
472 if (ret != LDB_SUCCESS) {
473 ldb_asprintf_errstring(ldb, "Could not munge DN %s into normal form",
474 ldb_dn_get_linearized(ac->req->op.add.message->dn));
475 talloc_free(mem_ctx);
479 parent_guid = ldb_msg_find_ldb_val(ac->search_res->message, "objectGUID");
480 if (parent_guid == NULL) {
481 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, parent does not have an objectGUID!",
482 ldb_dn_get_linearized(msg->dn));
483 talloc_free(mem_ctx);
484 return LDB_ERR_UNWILLING_TO_PERFORM;
487 /* TODO: Check this is a valid child to this parent,
488 * by reading the allowedChildClasses and
489 * allowedChildClasssesEffective attributes */
490 ret = ldb_msg_add_steal_value(msg, "parentGUID", discard_const(parent_guid));
491 if (ret != LDB_SUCCESS) {
492 ldb_asprintf_errstring(ldb, "objectclass: Cannot add %s, failed to add parentGUID",
493 ldb_dn_get_linearized(msg->dn));
494 talloc_free(mem_ctx);
495 return LDB_ERR_UNWILLING_TO_PERFORM;
499 ret = fix_attributes(ldb, schema, msg);
500 if (ret != LDB_SUCCESS) {
501 talloc_free(mem_ctx);
505 /* This is now the objectClass list from the database */
506 objectclass_element = ldb_msg_find_element(msg, "objectClass");
508 if (!objectclass_element) {
509 /* Where did it go? bail now... */
510 talloc_free(mem_ctx);
511 return LDB_ERR_OPERATIONS_ERROR;
513 ret = objectclass_sort(ac->module, schema, mem_ctx, objectclass_element, &sorted);
514 if (ret != LDB_SUCCESS) {
515 talloc_free(mem_ctx);
519 ldb_msg_remove_attr(msg, "objectClass");
520 ret = ldb_msg_add_empty(msg, "objectClass", 0, NULL);
522 if (ret != LDB_SUCCESS) {
523 talloc_free(mem_ctx);
527 /* We must completely replace the existing objectClass entry,
528 * because we need it sorted */
530 /* Move from the linked list back into an ldb msg */
531 for (current = sorted; current; current = current->next) {
532 value = talloc_strdup(msg, current->objectclass->lDAPDisplayName);
535 talloc_free(mem_ctx);
536 return LDB_ERR_OPERATIONS_ERROR;
538 ret = ldb_msg_add_string(msg, "objectClass", value);
539 if (ret != LDB_SUCCESS) {
540 ldb_set_errstring(ldb,
541 "objectclass: could not re-add sorted "
542 "objectclass to modify msg");
543 talloc_free(mem_ctx);
546 /* Last one is the critical one */
547 if (!current->next) {
548 struct ldb_message_element *el;
549 int32_t systemFlags = 0;
551 if (!ldb_msg_find_element(msg, "objectCategory")) {
552 value = talloc_strdup(msg, current->objectclass->defaultObjectCategory);
555 talloc_free(mem_ctx);
556 return LDB_ERR_OPERATIONS_ERROR;
558 ldb_msg_add_string(msg, "objectCategory", value);
560 if (!ldb_msg_find_element(msg, "showInAdvancedViewOnly") && (current->objectclass->defaultHidingValue == true)) {
561 ldb_msg_add_string(msg, "showInAdvancedViewOnly",
565 /* There are very special rules for systemFlags, see MS-ADTS 3.1.1.5.2.4 */
566 el = ldb_msg_find_element(msg, "systemFlags");
568 systemFlags = ldb_msg_find_attr_as_int(msg, "systemFlags", 0);
571 /* Only these flags may be set by a client, but we can't tell between a client and our provision at this point */
572 /* systemFlags &= ( SYSTEM_FLAG_CONFIG_ALLOW_RENAME | SYSTEM_FLAG_CONFIG_ALLOW_MOVE | SYSTEM_FLAG_CONFIG_LIMITED_MOVE); */
573 ldb_msg_remove_element(msg, el);
576 /* This flag is only allowed on attributeSchema objects */
577 if (ldb_attr_cmp(current->objectclass->lDAPDisplayName, "attributeSchema") == 0) {
578 systemFlags &= ~SYSTEM_FLAG_ATTR_IS_RDN;
581 if (ldb_attr_cmp(current->objectclass->lDAPDisplayName, "server") == 0) {
582 systemFlags |= (int32_t)(SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE | SYSTEM_FLAG_CONFIG_ALLOW_RENAME | SYSTEM_FLAG_CONFIG_ALLOW_LIMITED_MOVE);
583 } else if (ldb_attr_cmp(current->objectclass->lDAPDisplayName, "site") == 0
584 || ldb_attr_cmp(current->objectclass->lDAPDisplayName, "serverContainer") == 0
585 || ldb_attr_cmp(current->objectclass->lDAPDisplayName, "ntDSDSA") == 0) {
586 systemFlags |= (int32_t)(SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE);
588 } else if (ldb_attr_cmp(current->objectclass->lDAPDisplayName, "siteLink") == 0
589 || ldb_attr_cmp(current->objectclass->lDAPDisplayName, "siteLinkBridge") == 0
590 || ldb_attr_cmp(current->objectclass->lDAPDisplayName, "nTDSConnection") == 0) {
591 systemFlags |= (int32_t)(SYSTEM_FLAG_CONFIG_ALLOW_RENAME);
594 /* TODO: If parent object is site or subnet, also add (SYSTEM_FLAG_CONFIG_ALLOW_RENAME) */
596 if (el || systemFlags != 0) {
597 samdb_msg_add_int(ldb, msg, msg, "systemFlags", systemFlags);
603 talloc_free(mem_ctx);
604 ret = ldb_msg_sanity_check(ldb, msg);
607 if (ret != LDB_SUCCESS) {
611 ret = ldb_build_add_req(&add_req, ldb, ac,
616 if (ret != LDB_SUCCESS) {
620 /* perform the add */
621 return ldb_next_request(ac->module, add_req);
624 static int oc_modify_callback(struct ldb_request *req,
625 struct ldb_reply *ares);
626 static int objectclass_do_mod(struct oc_context *ac);
628 static int objectclass_modify(struct ldb_module *module, struct ldb_request *req)
630 struct ldb_context *ldb = ldb_module_get_ctx(module);
631 struct ldb_message_element *objectclass_element;
632 struct ldb_message *msg;
633 const struct dsdb_schema *schema = dsdb_get_schema(ldb);
634 struct class_list *sorted, *current;
635 struct ldb_request *down_req;
636 struct oc_context *ac;
641 ldb_debug(ldb, LDB_DEBUG_TRACE, "objectclass_modify\n");
643 /* do not manipulate our control entries */
644 if (ldb_dn_is_special(req->op.mod.message->dn)) {
645 return ldb_next_request(module, req);
648 /* Without schema, there isn't much to do here */
650 return ldb_next_request(module, req);
652 objectclass_element = ldb_msg_find_element(req->op.mod.message, "objectClass");
654 ac = oc_init_context(module, req);
656 return LDB_ERR_OPERATIONS_ERROR;
659 /* If no part of this touches the objectClass, then we don't
660 * need to make any changes. */
662 /* If the only operation is the deletion of the objectClass
663 * then go on with just fixing the attribute case */
664 if (!objectclass_element) {
665 msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
667 return LDB_ERR_OPERATIONS_ERROR;
670 ret = fix_attributes(ldb, schema, msg);
671 if (ret != LDB_SUCCESS) {
675 ret = ldb_build_mod_req(&down_req, ldb, ac,
680 if (ret != LDB_SUCCESS) {
684 /* go on with the call chain */
685 return ldb_next_request(module, down_req);
688 switch (objectclass_element->flags & LDB_FLAG_MOD_MASK) {
689 case LDB_FLAG_MOD_DELETE:
690 if (objectclass_element->num_values == 0) {
691 return LDB_ERR_OBJECT_CLASS_MODS_PROHIBITED;
695 case LDB_FLAG_MOD_REPLACE:
696 mem_ctx = talloc_new(ac);
697 if (mem_ctx == NULL) {
698 return LDB_ERR_OPERATIONS_ERROR;
701 msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
703 talloc_free(mem_ctx);
704 return LDB_ERR_OPERATIONS_ERROR;
707 ret = fix_attributes(ldb, schema, msg);
708 if (ret != LDB_SUCCESS) {
709 talloc_free(mem_ctx);
713 ret = objectclass_sort(module, schema, mem_ctx, objectclass_element, &sorted);
714 if (ret != LDB_SUCCESS) {
715 talloc_free(mem_ctx);
719 /* We must completely replace the existing objectClass entry,
720 * because we need it sorted */
722 ldb_msg_remove_attr(msg, "objectClass");
723 ret = ldb_msg_add_empty(msg, "objectClass", LDB_FLAG_MOD_REPLACE, NULL);
725 if (ret != LDB_SUCCESS) {
726 talloc_free(mem_ctx);
730 /* Move from the linked list back into an ldb msg */
731 for (current = sorted; current; current = current->next) {
732 /* copy the value as this string is on the schema
733 * context and we can't rely on it not changing
734 * before the operation is over */
735 value = talloc_strdup(msg,
736 current->objectclass->lDAPDisplayName);
739 talloc_free(mem_ctx);
740 return LDB_ERR_OPERATIONS_ERROR;
742 ret = ldb_msg_add_string(msg, "objectClass", value);
743 if (ret != LDB_SUCCESS) {
744 ldb_set_errstring(ldb,
745 "objectclass: could not re-add sorted "
746 "objectclass to modify msg");
747 talloc_free(mem_ctx);
752 talloc_free(mem_ctx);
754 ret = ldb_msg_sanity_check(ldb, msg);
755 if (ret != LDB_SUCCESS) {
759 ret = ldb_build_mod_req(&down_req, ldb, ac,
764 if (ret != LDB_SUCCESS) {
768 /* go on with the call chain */
769 return ldb_next_request(module, down_req);
772 /* This isn't the default branch of the switch, but a 'in any
773 * other case'. When a delete isn't for all objectClasses for
777 msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
780 return LDB_ERR_OPERATIONS_ERROR;
783 ret = fix_attributes(ldb, schema, msg);
784 if (ret != LDB_SUCCESS) {
789 ret = ldb_build_mod_req(&down_req, ldb, ac,
792 ac, oc_modify_callback,
794 if (ret != LDB_SUCCESS) {
798 return ldb_next_request(module, down_req);
801 static int oc_modify_callback(struct ldb_request *req, struct ldb_reply *ares)
803 struct ldb_context *ldb;
804 static const char * const attrs[] = { "objectClass", NULL };
805 struct ldb_request *search_req;
806 struct oc_context *ac;
809 ac = talloc_get_type(req->context, struct oc_context);
810 ldb = ldb_module_get_ctx(ac->module);
813 return ldb_module_done(ac->req, NULL, NULL,
814 LDB_ERR_OPERATIONS_ERROR);
816 if (ares->error != LDB_SUCCESS) {
817 return ldb_module_done(ac->req, ares->controls,
818 ares->response, ares->error);
821 if (ares->type != LDB_REPLY_DONE) {
823 return ldb_module_done(ac->req, NULL, NULL,
824 LDB_ERR_OPERATIONS_ERROR);
827 ret = ldb_build_search_req(&search_req, ldb, ac,
828 ac->req->op.mod.message->dn, LDB_SCOPE_BASE,
831 ac, get_search_callback,
833 if (ret != LDB_SUCCESS) {
834 return ldb_module_done(ac->req, NULL, NULL, ret);
837 ac->step_fn = objectclass_do_mod;
839 ret = ldb_next_request(ac->module, search_req);
840 if (ret != LDB_SUCCESS) {
841 return ldb_module_done(ac->req, NULL, NULL, ret);
846 static int objectclass_do_mod(struct oc_context *ac)
848 struct ldb_context *ldb;
849 const struct dsdb_schema *schema;
850 struct ldb_request *mod_req;
852 struct ldb_message_element *objectclass_element;
853 struct ldb_message *msg;
855 struct class_list *sorted, *current;
858 ldb = ldb_module_get_ctx(ac->module);
860 if (ac->search_res == NULL) {
861 return LDB_ERR_OPERATIONS_ERROR;
863 schema = dsdb_get_schema(ldb);
865 mem_ctx = talloc_new(ac);
866 if (mem_ctx == NULL) {
867 return LDB_ERR_OPERATIONS_ERROR;
870 /* use a new message structure */
871 msg = ldb_msg_new(ac);
873 ldb_set_errstring(ldb,
874 "objectclass: could not create new modify msg");
875 talloc_free(mem_ctx);
876 return LDB_ERR_OPERATIONS_ERROR;
879 /* This is now the objectClass list from the database */
880 objectclass_element = ldb_msg_find_element(ac->search_res->message,
882 if (!objectclass_element) {
883 /* Where did it go? bail now... */
884 talloc_free(mem_ctx);
885 return LDB_ERR_OPERATIONS_ERROR;
889 msg->dn = ac->req->op.mod.message->dn;
891 ret = objectclass_sort(ac->module, schema, mem_ctx, objectclass_element, &sorted);
892 if (ret != LDB_SUCCESS) {
896 /* We must completely replace the existing objectClass entry.
897 * We could do a constrained add/del, but we are meant to be
898 * in a transaction... */
900 ret = ldb_msg_add_empty(msg, "objectClass", LDB_FLAG_MOD_REPLACE, NULL);
901 if (ret != LDB_SUCCESS) {
902 ldb_set_errstring(ldb, "objectclass: could not clear objectclass in modify msg");
903 talloc_free(mem_ctx);
907 /* Move from the linked list back into an ldb msg */
908 for (current = sorted; current; current = current->next) {
909 value = talloc_strdup(msg, current->objectclass->lDAPDisplayName);
912 return LDB_ERR_OPERATIONS_ERROR;
914 ret = ldb_msg_add_string(msg, "objectClass", value);
915 if (ret != LDB_SUCCESS) {
916 ldb_set_errstring(ldb, "objectclass: could not re-add sorted objectclass to modify msg");
917 talloc_free(mem_ctx);
922 ret = ldb_msg_sanity_check(ldb, msg);
923 if (ret != LDB_SUCCESS) {
924 talloc_free(mem_ctx);
928 ret = ldb_build_mod_req(&mod_req, ldb, ac,
933 if (ret != LDB_SUCCESS) {
934 talloc_free(mem_ctx);
938 talloc_free(mem_ctx);
939 /* perform the modify */
940 return ldb_next_request(ac->module, mod_req);
943 static int objectclass_do_rename(struct oc_context *ac);
945 static int objectclass_rename(struct ldb_module *module, struct ldb_request *req)
947 static const char * const attrs[] = { "objectGUID", NULL };
948 struct ldb_context *ldb;
949 struct ldb_request *search_req;
950 struct oc_context *ac;
951 struct ldb_dn *parent_dn;
954 ldb = ldb_module_get_ctx(module);
956 ldb_debug(ldb, LDB_DEBUG_TRACE, "objectclass_rename\n");
958 if (ldb_dn_is_special(req->op.rename.newdn)) { /* do not manipulate our control entries */
959 return ldb_next_request(module, req);
962 /* Firstly ensure we are not trying to rename it to be a child of itself */
963 if ((ldb_dn_compare_base(req->op.rename.olddn, req->op.rename.newdn) == 0)
964 && (ldb_dn_compare(req->op.rename.olddn, req->op.rename.newdn) != 0)) {
965 ldb_asprintf_errstring(ldb, "Cannot rename %s to be a child of itself",
966 ldb_dn_get_linearized(req->op.rename.olddn));
967 return LDB_ERR_UNWILLING_TO_PERFORM;
970 ac = oc_init_context(module, req);
972 return LDB_ERR_OPERATIONS_ERROR;
975 parent_dn = ldb_dn_get_parent(ac, req->op.rename.newdn);
976 if (parent_dn == NULL) {
978 return LDB_ERR_OPERATIONS_ERROR;
981 /* note that the results of this search are kept and used to
982 update the parentGUID in objectclass_rename_callback() */
983 ret = ldb_build_search_req(&search_req, ldb,
984 ac, parent_dn, LDB_SCOPE_BASE,
987 ac, get_search_callback,
989 if (ret != LDB_SUCCESS) {
993 /* we have to add the show deleted control, as otherwise DRS
994 deletes will be refused as we will think the target parent
996 ret = ldb_request_add_control(search_req, LDB_CONTROL_SHOW_DELETED_OID, false, NULL);
998 if (ret != LDB_SUCCESS) {
1002 ac->step_fn = objectclass_do_rename;
1004 return ldb_next_request(ac->module, search_req);
1008 called after the rename happens.
1009 We now need to fix the parentGUID of the object to be the objectGUID of
1012 static int objectclass_rename_callback(struct ldb_request *req, struct ldb_reply *ares)
1014 struct ldb_context *ldb;
1015 struct oc_context *ac;
1016 const struct ldb_val *parent_guid;
1017 struct ldb_request *mod_req = NULL;
1019 struct ldb_message *msg;
1020 struct ldb_message_element *el = NULL;
1022 ac = talloc_get_type(req->context, struct oc_context);
1023 ldb = ldb_module_get_ctx(ac->module);
1025 /* make sure the rename succeeded */
1027 return ldb_module_done(ac->req, NULL, NULL,
1028 LDB_ERR_OPERATIONS_ERROR);
1030 if (ares->error != LDB_SUCCESS) {
1031 return ldb_module_done(ac->req, ares->controls,
1032 ares->response, ares->error);
1036 /* the ac->search_res should contain the new parents objectGUID */
1037 parent_guid = ldb_msg_find_ldb_val(ac->search_res->message, "objectGUID");
1038 if (parent_guid == NULL) {
1039 ldb_asprintf_errstring(ldb, "objectclass: Cannot rename %s, new parent does not have an objectGUID!",
1040 ldb_dn_get_linearized(ac->req->op.rename.newdn));
1041 return LDB_ERR_UNWILLING_TO_PERFORM;
1045 /* construct the modify message */
1046 msg = ldb_msg_new(ac);
1049 return LDB_ERR_OPERATIONS_ERROR;
1052 msg->dn = ac->req->op.rename.newdn;
1054 ret = ldb_msg_add_value(msg, "parentGUID", parent_guid, &el);
1055 if (ret != LDB_SUCCESS) {
1059 el->flags = LDB_FLAG_MOD_REPLACE;
1061 ret = ldb_build_mod_req(&mod_req, ldb, ac, msg,
1062 NULL, ac, oc_op_callback, req);
1064 return ldb_next_request(ac->module, mod_req);
1067 static int objectclass_do_rename(struct oc_context *ac)
1069 struct ldb_context *ldb;
1070 struct ldb_request *rename_req;
1071 struct ldb_dn *fixed_dn;
1074 ldb = ldb_module_get_ctx(ac->module);
1076 /* Check we have a valid parent */
1077 if (ac->search_res == NULL) {
1078 ldb_asprintf_errstring(ldb, "objectclass: Cannot rename %s, parent does not exist!",
1079 ldb_dn_get_linearized(ac->req->op.rename.newdn));
1080 return LDB_ERR_UNWILLING_TO_PERFORM;
1083 /* Fix up the DN to be in the standard form,
1084 * taking particular care to match the parent DN */
1086 ac->req->op.rename.newdn,
1087 ac->search_res->message->dn,
1089 if (ret != LDB_SUCCESS) {
1093 /* TODO: Check this is a valid child to this parent,
1094 * by reading the allowedChildClasses and
1095 * allowedChildClasssesEffective attributes */
1097 ret = ldb_build_rename_req(&rename_req, ldb, ac,
1098 ac->req->op.rename.olddn, fixed_dn,
1100 ac, objectclass_rename_callback,
1102 if (ret != LDB_SUCCESS) {
1106 /* perform the rename */
1107 return ldb_next_request(ac->module, rename_req);
1110 _PUBLIC_ const struct ldb_module_ops ldb_objectclass_module_ops = {
1111 .name = "objectclass",
1112 .add = objectclass_add,
1113 .modify = objectclass_modify,
1114 .rename = objectclass_rename,