4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2014
5 Copyright (C) Simo Sorce 2004-2008
6 Copyright (C) Matthias Dieter Wallnöfer 2009-2011
7 Copyright (C) Matthieu Patou 2012
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 * Component: ldb samldb module
28 * Description: various internal DSDB triggers - most for SAM specific objects
34 #include "libcli/ldap/ldap_ndr.h"
35 #include "ldb_module.h"
36 #include "auth/auth.h"
37 #include "dsdb/samdb/samdb.h"
38 #include "dsdb/samdb/ldb_modules/util.h"
39 #include "dsdb/samdb/ldb_modules/ridalloc.h"
40 #include "libcli/security/security.h"
41 #include "librpc/gen_ndr/ndr_security.h"
43 #include "param/param.h"
44 #include "libds/common/flag_mapping.h"
47 enum samldb_add_type {
54 typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
57 struct samldb_step *next;
62 struct ldb_module *module;
63 struct ldb_request *req;
65 /* used for add operations */
66 enum samldb_add_type type;
68 /* the resulting message */
69 struct ldb_message *msg;
71 /* used in "samldb_find_for_defaultObjectCategory" */
72 struct ldb_dn *dn, *res_dn;
74 /* all the async steps necessary to complete the operation */
75 struct samldb_step *steps;
76 struct samldb_step *curstep;
78 /* If someone set an ares to forward controls and response back to the caller */
79 struct ldb_reply *ares;
82 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
83 struct ldb_request *req)
85 struct ldb_context *ldb;
86 struct samldb_ctx *ac;
88 ldb = ldb_module_get_ctx(module);
90 ac = talloc_zero(req, struct samldb_ctx);
102 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
104 struct samldb_step *step, *stepper;
106 step = talloc_zero(ac, struct samldb_step);
108 return ldb_oom(ldb_module_get_ctx(ac->module));
113 if (ac->steps == NULL) {
117 if (ac->curstep == NULL)
118 return ldb_operr(ldb_module_get_ctx(ac->module));
119 for (stepper = ac->curstep; stepper->next != NULL;
120 stepper = stepper->next);
121 stepper->next = step;
127 static int samldb_first_step(struct samldb_ctx *ac)
129 if (ac->steps == NULL) {
130 return ldb_operr(ldb_module_get_ctx(ac->module));
133 ac->curstep = ac->steps;
134 return ac->curstep->fn(ac);
137 static int samldb_next_step(struct samldb_ctx *ac)
139 if (ac->curstep->next) {
140 ac->curstep = ac->curstep->next;
141 return ac->curstep->fn(ac);
144 /* We exit the samldb module here. If someone set an "ares" to forward
145 * controls and response back to the caller, use them. */
147 return ldb_module_done(ac->req, ac->ares->controls,
148 ac->ares->response, LDB_SUCCESS);
150 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
155 /* sAMAccountName handling */
157 static int samldb_generate_sAMAccountName(struct ldb_context *ldb,
158 struct ldb_message *msg)
162 /* Format: $000000-000000000000 */
164 name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
165 (unsigned int)generate_random(),
166 (unsigned int)generate_random(),
167 (unsigned int)generate_random());
171 return ldb_msg_add_steal_string(msg, "sAMAccountName", name);
174 static int samldb_check_sAMAccountName(struct samldb_ctx *ac)
176 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
179 struct ldb_result *res;
180 const char * const noattrs[] = { NULL };
182 if (ldb_msg_find_element(ac->msg, "sAMAccountName") == NULL) {
183 ret = samldb_generate_sAMAccountName(ldb, ac->msg);
184 if (ret != LDB_SUCCESS) {
189 name = ldb_msg_find_attr_as_string(ac->msg, "sAMAccountName", NULL);
191 /* The "sAMAccountName" cannot be nothing */
192 ldb_set_errstring(ldb,
193 "samldb: Empty account names aren't allowed!");
194 return LDB_ERR_CONSTRAINT_VIOLATION;
197 ret = dsdb_module_search(ac->module, ac, &res,
198 ldb_get_default_basedn(ldb), LDB_SCOPE_SUBTREE, noattrs,
199 DSDB_FLAG_NEXT_MODULE,
201 "(sAMAccountName=%s)",
202 ldb_binary_encode_string(ac, name));
203 if (ret != LDB_SUCCESS) {
206 if (res->count != 0) {
207 ldb_asprintf_errstring(ldb,
208 "samldb: Account name (sAMAccountName) '%s' already in use!",
211 return LDB_ERR_ENTRY_ALREADY_EXISTS;
215 return samldb_next_step(ac);
219 static bool samldb_msg_add_sid(struct ldb_message *msg,
221 const struct dom_sid *sid)
224 enum ndr_err_code ndr_err;
226 ndr_err = ndr_push_struct_blob(&v, msg, sid,
227 (ndr_push_flags_fn_t)ndr_push_dom_sid);
228 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
231 return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
235 /* allocate a SID using our RID Set */
236 static int samldb_allocate_sid(struct samldb_ctx *ac)
240 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
243 ret = ridalloc_allocate_rid(ac->module, &rid, ac->req);
244 if (ret != LDB_SUCCESS) {
248 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
250 return ldb_module_oom(ac->module);
253 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
254 return ldb_operr(ldb);
257 return samldb_next_step(ac);
261 see if a krbtgt_number is available
263 static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac,
264 uint32_t krbtgt_number)
266 TALLOC_CTX *tmp_ctx = talloc_new(ac);
267 struct ldb_result *res;
268 const char * const no_attrs[] = { NULL };
271 ret = dsdb_module_search(ac->module, tmp_ctx, &res,
272 ldb_get_default_basedn(ldb_module_get_ctx(ac->module)),
273 LDB_SCOPE_SUBTREE, no_attrs,
274 DSDB_FLAG_NEXT_MODULE,
276 "(msDC-SecondaryKrbTgtNumber=%u)",
278 if (ret == LDB_SUCCESS && res->count == 0) {
279 talloc_free(tmp_ctx);
282 talloc_free(tmp_ctx);
286 /* special handling for add in RODC join */
287 static int samldb_rodc_add(struct samldb_ctx *ac)
289 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
290 uint32_t krbtgt_number, i_start, i;
293 struct ldb_val newpass_utf16;
295 /* find a unused msDC-SecondaryKrbTgtNumber */
296 i_start = generate_random() & 0xFFFF;
301 for (i=i_start; i<=0xFFFF; i++) {
302 if (samldb_krbtgtnumber_available(ac, i)) {
307 for (i=1; i<i_start; i++) {
308 if (samldb_krbtgtnumber_available(ac, i)) {
314 ldb_asprintf_errstring(ldb,
315 "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
316 W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
317 return LDB_ERR_OTHER;
320 ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber",
321 LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
322 if (ret != LDB_SUCCESS) {
323 return ldb_operr(ldb);
326 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
327 "msDS-SecondaryKrbTgtNumber", krbtgt_number);
328 if (ret != LDB_SUCCESS) {
329 return ldb_operr(ldb);
332 ret = ldb_msg_add_fmt(ac->msg, "sAMAccountName", "krbtgt_%u",
334 if (ret != LDB_SUCCESS) {
335 return ldb_operr(ldb);
338 newpass = generate_random_password(ac->msg, 128, 255);
339 if (newpass == NULL) {
340 return ldb_operr(ldb);
343 if (!convert_string_talloc(ac,
345 newpass, strlen(newpass),
346 (void *)&newpass_utf16.data,
347 &newpass_utf16.length)) {
348 ldb_asprintf_errstring(ldb,
350 "failed to generate UTF16 password from random password");
351 return LDB_ERR_OPERATIONS_ERROR;
353 ret = ldb_msg_add_steal_value(ac->msg, "clearTextPassword", &newpass_utf16);
354 if (ret != LDB_SUCCESS) {
355 return ldb_operr(ldb);
358 return samldb_next_step(ac);
361 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
363 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
364 struct ldb_result *res;
365 const char * const no_attrs[] = { NULL };
370 ret = dsdb_module_search(ac->module, ac, &res,
371 ac->dn, LDB_SCOPE_BASE, no_attrs,
372 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT
373 | DSDB_FLAG_NEXT_MODULE,
375 "(objectClass=classSchema)");
376 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
377 /* Don't be pricky when the DN doesn't exist if we have the */
378 /* RELAX control specified */
379 if (ldb_request_get_control(ac->req,
380 LDB_CONTROL_RELAX_OID) == NULL) {
381 ldb_set_errstring(ldb,
382 "samldb_find_defaultObjectCategory: "
383 "Invalid DN for 'defaultObjectCategory'!");
384 return LDB_ERR_CONSTRAINT_VIOLATION;
387 if ((ret != LDB_ERR_NO_SUCH_OBJECT) && (ret != LDB_SUCCESS)) {
391 if (ret == LDB_SUCCESS) {
392 /* ensure the defaultObjectCategory has a full GUID */
393 struct ldb_message *m;
394 m = ldb_msg_new(ac->msg);
399 if (ldb_msg_add_string(m, "defaultObjectCategory",
400 ldb_dn_get_extended_linearized(m, res->msgs[0]->dn, 1)) !=
404 m->elements[0].flags = LDB_FLAG_MOD_REPLACE;
406 ret = dsdb_module_modify(ac->module, m,
407 DSDB_FLAG_NEXT_MODULE,
409 if (ret != LDB_SUCCESS) {
417 return samldb_next_step(ac);
421 * msDS-IntId attributeSchema attribute handling
422 * during LDB_ADD request processing
424 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
429 int32_t system_flags;
430 struct ldb_context *ldb;
431 struct ldb_result *ldb_res;
432 struct ldb_dn *schema_dn;
433 struct samldb_msds_intid_persistant *msds_intid_struct;
434 struct dsdb_schema *schema;
436 ldb = ldb_module_get_ctx(ac->module);
437 schema_dn = ldb_get_schema_basedn(ldb);
439 /* replicated update should always go through */
440 if (ldb_request_get_control(ac->req,
441 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
445 /* msDS-IntId is handled by system and should never be
446 * passed by clients */
447 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
448 return LDB_ERR_UNWILLING_TO_PERFORM;
451 /* do not generate msDS-IntId if Relax control is passed */
452 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
456 /* check Functional Level */
457 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
461 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
462 system_flags = ldb_msg_find_attr_as_int(ac->msg, "systemFlags", 0);
463 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
466 schema = dsdb_get_schema(ldb, NULL);
468 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
469 "samldb_schema_info_update: no dsdb_schema loaded");
470 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
471 return ldb_operr(ldb);
474 msds_intid_struct = (struct samldb_msds_intid_persistant*) ldb_get_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE);
475 if (!msds_intid_struct) {
476 msds_intid_struct = talloc(ldb, struct samldb_msds_intid_persistant);
477 /* Generate new value for msDs-IntId
478 * Value should be in 0x80000000..0xBFFFFFFF range */
479 msds_intid = generate_random() % 0X3FFFFFFF;
480 msds_intid += 0x80000000;
481 msds_intid_struct->msds_intid = msds_intid;
482 msds_intid_struct->usn = schema->loaded_usn;
483 DEBUG(2, ("No samldb_msds_intid_persistant struct, allocating a new one\n"));
485 msds_intid = msds_intid_struct->msds_intid;
488 /* probe id values until unique one is found */
490 uint64_t current_usn;
492 if (msds_intid > 0xBFFFFFFF) {
493 msds_intid = 0x80000001;
496 * Alternative strategy to a costly (even indexed search) to the
498 * We search in the schema if we have already this intid (using dsdb_attribute_by_attributeID_id because
499 * in the range 0x80000000 0xBFFFFFFFF, attributeID is a DSDB_ATTID_TYPE_INTID).
500 * If so generate another random value.
501 * If not check if the highest USN in the database for the schema partition is the
503 * If so it means that's only this ldb context that is touching the schema in the database.
504 * If not it means that's someone else has modified the database while we are doing our changes too
505 * (this case should be very bery rare) in order to be sure do the search in the database.
507 if (dsdb_attribute_by_attributeID_id(schema, msds_intid)) {
508 msds_intid = generate_random() % 0X3FFFFFFF;
509 msds_intid += 0x80000000;
513 ret = dsdb_module_load_partition_usn(ac->module, schema_dn,
514 ¤t_usn, NULL, NULL);
515 if (ret != LDB_SUCCESS) {
516 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
517 __location__": Searching for schema USN failed: %s\n",
519 return ldb_operr(ldb);
522 /* current_usn can be lesser than msds_intid_struct-> if there is
523 * uncommited changes.
525 if (current_usn > msds_intid_struct->usn) {
526 /* oups something has changed, someone/something
527 * else is modifying or has modified the schema
528 * we'd better check this intid is the database directly
531 DEBUG(2, ("Schema has changed, searching the database for the unicity of %d\n",
534 ret = dsdb_module_search(ac->module, ac,
536 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
537 DSDB_FLAG_NEXT_MODULE,
539 "(msDS-IntId=%d)", msds_intid);
540 if (ret != LDB_SUCCESS) {
541 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
542 __location__": Searching for msDS-IntId=%d failed - %s\n",
545 return ldb_operr(ldb);
547 id_exists = (ldb_res->count > 0);
548 talloc_free(ldb_res);
554 msds_intid_struct->msds_intid = msds_intid;
555 ldb_set_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE, msds_intid_struct);
557 return samdb_msg_add_int(ldb, ac->msg, ac->msg, "msDS-IntId",
563 * samldb_add_entry (async)
566 static int samldb_add_entry_callback(struct ldb_request *req,
567 struct ldb_reply *ares)
569 struct ldb_context *ldb;
570 struct samldb_ctx *ac;
573 ac = talloc_get_type(req->context, struct samldb_ctx);
574 ldb = ldb_module_get_ctx(ac->module);
577 return ldb_module_done(ac->req, NULL, NULL,
578 LDB_ERR_OPERATIONS_ERROR);
581 if (ares->type == LDB_REPLY_REFERRAL) {
582 return ldb_module_send_referral(ac->req, ares->referral);
585 if (ares->error != LDB_SUCCESS) {
586 return ldb_module_done(ac->req, ares->controls,
587 ares->response, ares->error);
589 if (ares->type != LDB_REPLY_DONE) {
590 ldb_asprintf_errstring(ldb, "Invalid LDB reply type %d", ares->type);
591 return ldb_module_done(ac->req, NULL, NULL,
592 LDB_ERR_OPERATIONS_ERROR);
595 /* The caller may wish to get controls back from the add */
596 ac->ares = talloc_steal(ac, ares);
598 ret = samldb_next_step(ac);
599 if (ret != LDB_SUCCESS) {
600 return ldb_module_done(ac->req, NULL, NULL, ret);
605 static int samldb_add_entry(struct samldb_ctx *ac)
607 struct ldb_context *ldb;
608 struct ldb_request *req;
611 ldb = ldb_module_get_ctx(ac->module);
613 ret = ldb_build_add_req(&req, ldb, ac,
616 ac, samldb_add_entry_callback,
618 LDB_REQ_SET_LOCATION(req);
619 if (ret != LDB_SUCCESS) {
623 return ldb_next_request(ac->module, req);
627 * return true if msg carries an attributeSchema that is intended to be RODC
628 * filtered but is also a system-critical attribute.
630 static bool check_rodc_critical_attribute(struct ldb_message *msg)
632 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
634 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
635 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
636 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE
637 | SEARCH_FLAG_CONFIDENTIAL);
639 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
640 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
648 static int samldb_fill_object(struct samldb_ctx *ac)
650 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
653 /* Add information for the different account types */
655 case SAMLDB_TYPE_USER: {
656 struct ldb_control *rodc_control = ldb_request_get_control(ac->req,
657 LDB_CONTROL_RODC_DCPROMO_OID);
658 if (rodc_control != NULL) {
659 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
660 rodc_control->critical = false;
661 ret = samldb_add_step(ac, samldb_rodc_add);
662 if (ret != LDB_SUCCESS) return ret;
665 /* check if we have a valid sAMAccountName */
666 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
667 if (ret != LDB_SUCCESS) return ret;
669 ret = samldb_add_step(ac, samldb_add_entry);
670 if (ret != LDB_SUCCESS) return ret;
674 case SAMLDB_TYPE_GROUP: {
675 /* check if we have a valid sAMAccountName */
676 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
677 if (ret != LDB_SUCCESS) return ret;
679 ret = samldb_add_step(ac, samldb_add_entry);
680 if (ret != LDB_SUCCESS) return ret;
684 case SAMLDB_TYPE_CLASS: {
685 const struct ldb_val *rdn_value, *def_obj_cat_val;
686 unsigned int v = ldb_msg_find_attr_as_uint(ac->msg, "objectClassCategory", -2);
688 /* As discussed with Microsoft through dochelp in April 2012 this is the behavior of windows*/
689 if (!ldb_msg_find_element(ac->msg, "subClassOf")) {
690 ret = ldb_msg_add_string(ac->msg, "subClassOf", "top");
691 if (ret != LDB_SUCCESS) return ret;
694 ret = samdb_find_or_add_attribute(ldb, ac->msg,
696 if (ret != LDB_SUCCESS) return ret;
698 /* do not allow to mark an attributeSchema as RODC filtered if it
699 * is system-critical */
700 if (check_rodc_critical_attribute(ac->msg)) {
701 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
702 ldb_dn_get_linearized(ac->msg->dn));
703 return LDB_ERR_UNWILLING_TO_PERFORM;
706 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
707 if (rdn_value == NULL) {
708 return ldb_operr(ldb);
710 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
711 /* the RDN has prefix "CN" */
712 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
713 samdb_cn_to_lDAPDisplayName(ac->msg,
714 (const char *) rdn_value->data));
715 if (ret != LDB_SUCCESS) {
721 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
724 guid = GUID_random();
725 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
726 if (ret != LDB_SUCCESS) {
732 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
733 "defaultObjectCategory");
734 if (def_obj_cat_val != NULL) {
735 /* "defaultObjectCategory" has been set by the caller.
736 * Do some checks for consistency.
737 * NOTE: The real constraint check (that
738 * 'defaultObjectCategory' is the DN of the new
739 * objectclass or any parent of it) is still incomplete.
740 * For now we say that 'defaultObjectCategory' is valid
741 * if it exists and it is of objectclass "classSchema".
743 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
744 if (ac->dn == NULL) {
745 ldb_set_errstring(ldb,
746 "Invalid DN for 'defaultObjectCategory'!");
747 return LDB_ERR_CONSTRAINT_VIOLATION;
750 /* "defaultObjectCategory" has not been set by the
751 * caller. Use the entry DN for it. */
752 ac->dn = ac->msg->dn;
754 ret = ldb_msg_add_string(ac->msg, "defaultObjectCategory",
755 ldb_dn_alloc_linearized(ac->msg, ac->dn));
756 if (ret != LDB_SUCCESS) {
762 ret = samldb_add_step(ac, samldb_add_entry);
763 if (ret != LDB_SUCCESS) return ret;
765 /* Now perform the checks for the 'defaultObjectCategory'. The
766 * lookup DN was already saved in "ac->dn" */
767 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
768 if (ret != LDB_SUCCESS) return ret;
770 /* -2 is not a valid objectClassCategory so it means the attribute wasn't present */
772 /* Windows 2003 does this*/
773 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "objectClassCategory", 0);
774 if (ret != LDB_SUCCESS) {
781 case SAMLDB_TYPE_ATTRIBUTE: {
782 const struct ldb_val *rdn_value;
783 struct ldb_message_element *el;
784 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
785 if (rdn_value == NULL) {
786 return ldb_operr(ldb);
788 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
789 /* the RDN has prefix "CN" */
790 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
791 samdb_cn_to_lDAPDisplayName(ac->msg,
792 (const char *) rdn_value->data));
793 if (ret != LDB_SUCCESS) {
799 /* do not allow to mark an attributeSchema as RODC filtered if it
800 * is system-critical */
801 if (check_rodc_critical_attribute(ac->msg)) {
802 ldb_asprintf_errstring(ldb,
803 "samldb: refusing schema add of %s - cannot combine critical attribute with RODC filtering",
804 ldb_dn_get_linearized(ac->msg->dn));
805 return LDB_ERR_UNWILLING_TO_PERFORM;
808 ret = samdb_find_or_add_attribute(ldb, ac->msg,
809 "isSingleValued", "FALSE");
810 if (ret != LDB_SUCCESS) return ret;
812 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
815 guid = GUID_random();
816 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
817 if (ret != LDB_SUCCESS) {
823 el = ldb_msg_find_element(ac->msg, "attributeSyntax");
826 * No need to scream if there isn't as we have code later on
827 * that will take care of it.
829 const struct dsdb_syntax *syntax = find_syntax_map_by_ad_oid((const char *)el->values[0].data);
831 DEBUG(9, ("Can't find dsdb_syntax object for attributeSyntax %s\n",
832 (const char *)el->values[0].data));
834 unsigned int v = ldb_msg_find_attr_as_uint(ac->msg, "oMSyntax", 0);
835 const struct ldb_val *val = ldb_msg_find_ldb_val(ac->msg, "oMObjectClass");
838 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "oMSyntax", syntax->oMSyntax);
839 if (ret != LDB_SUCCESS) {
844 struct ldb_val val2 = ldb_val_dup(ldb, &syntax->oMObjectClass);
845 if (val2.length > 0) {
846 ret = ldb_msg_add_value(ac->msg, "oMObjectClass", &val2, NULL);
847 if (ret != LDB_SUCCESS) {
855 /* handle msDS-IntID attribute */
856 ret = samldb_add_handle_msDS_IntId(ac);
857 if (ret != LDB_SUCCESS) return ret;
859 ret = samldb_add_step(ac, samldb_add_entry);
860 if (ret != LDB_SUCCESS) return ret;
865 ldb_asprintf_errstring(ldb, "Invalid entry type!");
866 return LDB_ERR_OPERATIONS_ERROR;
870 return samldb_first_step(ac);
873 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
875 struct ldb_context *ldb;
876 const struct ldb_val *rdn_value;
880 ldb = ldb_module_get_ctx(ac->module);
882 sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
884 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
885 if (rdn_value == NULL) {
886 return ldb_operr(ldb);
888 sid = dom_sid_parse_talloc(ac->msg,
889 (const char *)rdn_value->data);
891 ldb_set_errstring(ldb,
892 "samldb: No valid SID found in ForeignSecurityPrincipal CN!");
893 return LDB_ERR_CONSTRAINT_VIOLATION;
895 if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
896 return ldb_operr(ldb);
900 /* finally proceed with adding the entry */
901 ret = samldb_add_step(ac, samldb_add_entry);
902 if (ret != LDB_SUCCESS) return ret;
904 return samldb_first_step(ac);
907 static int samldb_schema_info_update(struct samldb_ctx *ac)
910 struct ldb_context *ldb;
911 struct dsdb_schema *schema;
913 /* replicated update should always go through */
914 if (ldb_request_get_control(ac->req,
915 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
919 /* do not update schemaInfo during provisioning */
920 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
924 ldb = ldb_module_get_ctx(ac->module);
925 schema = dsdb_get_schema(ldb, NULL);
927 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
928 "samldb_schema_info_update: no dsdb_schema loaded");
929 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
930 return ldb_operr(ldb);
933 ret = dsdb_module_schema_info_update(ac->module, schema,
934 DSDB_FLAG_NEXT_MODULE|
937 if (ret != LDB_SUCCESS) {
938 ldb_asprintf_errstring(ldb,
939 "samldb_schema_info_update: dsdb_module_schema_info_update failed with %s",
947 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid);
948 static int samldb_check_user_account_control_rules(struct samldb_ctx *ac,
950 uint32_t user_account_control,
951 uint32_t user_account_control_old);
954 * "Objectclass" trigger (MS-SAMR 3.1.1.8.1)
956 * Has to be invoked on "add" and "modify" operations on "user", "computer" and
958 * ac->msg contains the "add"/"modify" message
959 * ac->type contains the object type (main objectclass)
961 static int samldb_objectclass_trigger(struct samldb_ctx *ac)
963 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
964 void *skip_allocate_sids = ldb_get_opaque(ldb,
965 "skip_allocate_sids");
966 struct ldb_message_element *el, *el2;
970 /* make sure that "sAMAccountType" is not specified */
971 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
973 ldb_set_errstring(ldb,
974 "samldb: sAMAccountType must not be specified!");
975 return LDB_ERR_UNWILLING_TO_PERFORM;
978 /* Step 1: objectSid assignment */
980 /* Don't allow the objectSid to be changed. But beside the RELAX
981 * control we have also to guarantee that it can always be set with
982 * SYSTEM permissions. This is needed for the "samba3sam" backend. */
983 sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
984 if ((sid != NULL) && (!dsdb_module_am_system(ac->module)) &&
985 (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) == NULL)) {
986 ldb_set_errstring(ldb,
987 "samldb: objectSid must not be specified!");
988 return LDB_ERR_UNWILLING_TO_PERFORM;
991 /* but generate a new SID when we do have an add operations */
992 if ((sid == NULL) && (ac->req->operation == LDB_ADD) && !skip_allocate_sids) {
993 ret = samldb_add_step(ac, samldb_allocate_sid);
994 if (ret != LDB_SUCCESS) return ret;
998 case SAMLDB_TYPE_USER: {
999 bool uac_generated = false, uac_add_flags = false;
1001 /* Step 1.2: Default values */
1002 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1003 "accountExpires", "9223372036854775807");
1004 if (ret != LDB_SUCCESS) return ret;
1005 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1006 "badPasswordTime", "0");
1007 if (ret != LDB_SUCCESS) return ret;
1008 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1009 "badPwdCount", "0");
1010 if (ret != LDB_SUCCESS) return ret;
1011 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1013 if (ret != LDB_SUCCESS) return ret;
1014 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1015 "countryCode", "0");
1016 if (ret != LDB_SUCCESS) return ret;
1017 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1019 if (ret != LDB_SUCCESS) return ret;
1020 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1022 if (ret != LDB_SUCCESS) return ret;
1023 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1025 if (ret != LDB_SUCCESS) return ret;
1026 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1028 if (ret != LDB_SUCCESS) return ret;
1030 /* On add operations we might need to generate a
1031 * "userAccountControl" (if it isn't specified). */
1032 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1033 if ((el == NULL) && (ac->req->operation == LDB_ADD)) {
1034 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
1035 "userAccountControl",
1037 if (ret != LDB_SUCCESS) {
1040 uac_generated = true;
1041 uac_add_flags = true;
1044 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1046 uint32_t user_account_control, account_type;
1047 /* Step 1.3: "userAccountControl" -> "sAMAccountType" mapping */
1048 user_account_control = ldb_msg_find_attr_as_uint(ac->msg,
1049 "userAccountControl",
1051 /* "userAccountControl" = 0 or missing one of the types means "UF_NORMAL_ACCOUNT" */
1052 if ((user_account_control & UF_ACCOUNT_TYPE_MASK) == 0) {
1053 user_account_control = UF_NORMAL_ACCOUNT | user_account_control;
1054 uac_generated = true;
1058 * As per MS-SAMR 3.1.1.8.10 these flags have not to be set
1060 if ((user_account_control & UF_LOCKOUT) != 0) {
1061 user_account_control &= ~UF_LOCKOUT;
1062 uac_generated = true;
1064 if ((user_account_control & UF_PASSWORD_EXPIRED) != 0) {
1065 user_account_control &= ~UF_PASSWORD_EXPIRED;
1066 uac_generated = true;
1069 ret = samldb_check_user_account_control_rules(ac, NULL,
1070 user_account_control, 0);
1071 if (ret != LDB_SUCCESS) {
1075 /* Workstation and (read-only) DC objects do need objectclass "computer" */
1076 if ((samdb_find_attribute(ldb, ac->msg,
1077 "objectclass", "computer") == NULL) &&
1078 (user_account_control &
1079 (UF_SERVER_TRUST_ACCOUNT | UF_WORKSTATION_TRUST_ACCOUNT))) {
1080 ldb_set_errstring(ldb,
1081 "samldb: Requested account type does need objectclass 'computer'!");
1082 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1085 account_type = ds_uf2atype(user_account_control);
1086 if (account_type == 0) {
1087 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1088 return LDB_ERR_UNWILLING_TO_PERFORM;
1090 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1093 if (ret != LDB_SUCCESS) {
1096 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1097 el2->flags = LDB_FLAG_MOD_REPLACE;
1099 /* "isCriticalSystemObject" might be set */
1100 if (user_account_control &
1101 (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1102 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1104 if (ret != LDB_SUCCESS) {
1107 el2 = ldb_msg_find_element(ac->msg,
1108 "isCriticalSystemObject");
1109 el2->flags = LDB_FLAG_MOD_REPLACE;
1110 } else if (user_account_control & UF_WORKSTATION_TRUST_ACCOUNT) {
1111 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1113 if (ret != LDB_SUCCESS) {
1116 el2 = ldb_msg_find_element(ac->msg,
1117 "isCriticalSystemObject");
1118 el2->flags = LDB_FLAG_MOD_REPLACE;
1121 /* Step 1.4: "userAccountControl" -> "primaryGroupID" mapping */
1122 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1123 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1126 * Older AD deployments don't know about the
1129 if (rid == DOMAIN_RID_READONLY_DCS) {
1130 ret = samldb_prim_group_tester(ac, rid);
1131 if (ret != LDB_SUCCESS) {
1136 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1137 "primaryGroupID", rid);
1138 if (ret != LDB_SUCCESS) {
1141 el2 = ldb_msg_find_element(ac->msg,
1143 el2->flags = LDB_FLAG_MOD_REPLACE;
1146 /* Step 1.5: Add additional flags when needed */
1147 /* Obviously this is done when the "userAccountControl"
1148 * has been generated here (tested against Windows
1150 if (uac_generated) {
1151 if (uac_add_flags) {
1152 user_account_control |= UF_ACCOUNTDISABLE;
1153 user_account_control |= UF_PASSWD_NOTREQD;
1156 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
1157 "userAccountControl",
1158 user_account_control);
1159 if (ret != LDB_SUCCESS) {
1168 case SAMLDB_TYPE_GROUP: {
1169 const char *tempstr;
1171 /* Step 2.2: Default values */
1172 tempstr = talloc_asprintf(ac->msg, "%d",
1173 GTYPE_SECURITY_GLOBAL_GROUP);
1174 if (tempstr == NULL) return ldb_operr(ldb);
1175 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1176 "groupType", tempstr);
1177 if (ret != LDB_SUCCESS) return ret;
1179 /* Step 2.3: "groupType" -> "sAMAccountType" */
1180 el = ldb_msg_find_element(ac->msg, "groupType");
1182 uint32_t group_type, account_type;
1184 group_type = ldb_msg_find_attr_as_uint(ac->msg,
1187 /* The creation of builtin groups requires the
1189 if (group_type == GTYPE_SECURITY_BUILTIN_LOCAL_GROUP) {
1190 if (ldb_request_get_control(ac->req,
1191 LDB_CONTROL_RELAX_OID) == NULL) {
1192 return LDB_ERR_UNWILLING_TO_PERFORM;
1196 account_type = ds_gtype2atype(group_type);
1197 if (account_type == 0) {
1198 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1199 return LDB_ERR_UNWILLING_TO_PERFORM;
1201 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1204 if (ret != LDB_SUCCESS) {
1207 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1208 el2->flags = LDB_FLAG_MOD_REPLACE;
1214 ldb_asprintf_errstring(ldb,
1215 "Invalid entry type!");
1216 return LDB_ERR_OPERATIONS_ERROR;
1224 * "Primary group ID" trigger (MS-SAMR 3.1.1.8.2)
1226 * Has to be invoked on "add" and "modify" operations on "user" and "computer"
1228 * ac->msg contains the "add"/"modify" message
1231 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid)
1233 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1234 struct dom_sid *sid;
1235 struct ldb_result *res;
1237 const char * const noattrs[] = { NULL };
1239 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1241 return ldb_operr(ldb);
1244 ret = dsdb_module_search(ac->module, ac, &res,
1245 ldb_get_default_basedn(ldb),
1247 noattrs, DSDB_FLAG_NEXT_MODULE,
1250 ldap_encode_ndr_dom_sid(ac, sid));
1251 if (ret != LDB_SUCCESS) {
1254 if (res->count != 1) {
1256 ldb_asprintf_errstring(ldb,
1257 "Failed to find primary group with RID %u!",
1259 return LDB_ERR_UNWILLING_TO_PERFORM;
1266 static int samldb_prim_group_set(struct samldb_ctx *ac)
1268 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1271 rid = ldb_msg_find_attr_as_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
1272 if (rid == (uint32_t) -1) {
1273 /* we aren't affected of any primary group set */
1276 } else if (!ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
1277 ldb_set_errstring(ldb,
1278 "The primary group isn't settable on add operations!");
1279 return LDB_ERR_UNWILLING_TO_PERFORM;
1282 return samldb_prim_group_tester(ac, rid);
1285 static int samldb_prim_group_change(struct samldb_ctx *ac)
1287 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1288 const char * const attrs[] = {
1291 "userAccountControl",
1293 struct ldb_result *res, *group_res;
1294 struct ldb_message_element *el;
1295 struct ldb_message *msg;
1296 uint32_t prev_rid, new_rid, uac;
1297 struct dom_sid *prev_sid, *new_sid;
1298 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
1300 const char * const noattrs[] = { NULL };
1302 el = dsdb_get_single_valued_attr(ac->msg, "primaryGroupID",
1303 ac->req->operation);
1305 /* we are not affected */
1309 /* Fetch information from the existing object */
1311 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1312 DSDB_FLAG_NEXT_MODULE, ac->req);
1313 if (ret != LDB_SUCCESS) {
1317 uac = ldb_msg_find_attr_as_uint(res->msgs[0], "userAccountControl", 0);
1319 /* Finds out the DN of the old primary group */
1321 prev_rid = ldb_msg_find_attr_as_uint(res->msgs[0], "primaryGroupID",
1323 if (prev_rid == (uint32_t) -1) {
1324 /* User objects do always have a mandatory "primaryGroupID"
1325 * attribute. If this doesn't exist then the object is of the
1326 * wrong type. This is the exact Windows error code */
1327 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1330 prev_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), prev_rid);
1331 if (prev_sid == NULL) {
1332 return ldb_operr(ldb);
1335 /* Finds out the DN of the new primary group
1336 * Notice: in order to parse the primary group ID correctly we create
1337 * a temporary message here. */
1339 msg = ldb_msg_new(ac->msg);
1341 return ldb_module_oom(ac->module);
1343 ret = ldb_msg_add(msg, el, 0);
1344 if (ret != LDB_SUCCESS) {
1347 new_rid = ldb_msg_find_attr_as_uint(msg, "primaryGroupID", (uint32_t) -1);
1349 if (new_rid == (uint32_t) -1) {
1350 /* we aren't affected of any primary group change */
1354 if (prev_rid == new_rid) {
1358 if ((uac & UF_SERVER_TRUST_ACCOUNT) && new_rid != DOMAIN_RID_DCS) {
1359 ldb_asprintf_errstring(ldb,
1360 "%08X: samldb: UF_SERVER_TRUST_ACCOUNT requires "
1361 "primaryGroupID=%u!",
1362 W_ERROR_V(WERR_DS_CANT_MOD_PRIMARYGROUPID),
1364 return LDB_ERR_UNWILLING_TO_PERFORM;
1367 if ((uac & UF_PARTIAL_SECRETS_ACCOUNT) && new_rid != DOMAIN_RID_READONLY_DCS) {
1368 ldb_asprintf_errstring(ldb,
1369 "%08X: samldb: UF_PARTIAL_SECRETS_ACCOUNT requires "
1370 "primaryGroupID=%u!",
1371 W_ERROR_V(WERR_DS_CANT_MOD_PRIMARYGROUPID),
1372 DOMAIN_RID_READONLY_DCS);
1373 return LDB_ERR_UNWILLING_TO_PERFORM;
1376 ret = dsdb_module_search(ac->module, ac, &group_res,
1377 ldb_get_default_basedn(ldb),
1379 noattrs, DSDB_FLAG_NEXT_MODULE,
1382 ldap_encode_ndr_dom_sid(ac, prev_sid));
1383 if (ret != LDB_SUCCESS) {
1386 if (group_res->count != 1) {
1387 return ldb_operr(ldb);
1389 prev_prim_group_dn = group_res->msgs[0]->dn;
1391 new_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), new_rid);
1392 if (new_sid == NULL) {
1393 return ldb_operr(ldb);
1396 ret = dsdb_module_search(ac->module, ac, &group_res,
1397 ldb_get_default_basedn(ldb),
1399 noattrs, DSDB_FLAG_NEXT_MODULE,
1402 ldap_encode_ndr_dom_sid(ac, new_sid));
1403 if (ret != LDB_SUCCESS) {
1406 if (group_res->count != 1) {
1407 /* Here we know if the specified new primary group candidate is
1409 return LDB_ERR_UNWILLING_TO_PERFORM;
1411 new_prim_group_dn = group_res->msgs[0]->dn;
1413 /* We need to be already a normal member of the new primary
1414 * group in order to be successful. */
1415 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
1416 ldb_dn_get_linearized(new_prim_group_dn));
1418 return LDB_ERR_UNWILLING_TO_PERFORM;
1421 /* Remove the "member" attribute on the new primary group */
1422 msg = ldb_msg_new(ac->msg);
1424 return ldb_module_oom(ac->module);
1426 msg->dn = new_prim_group_dn;
1428 ret = samdb_msg_add_delval(ldb, msg, msg, "member",
1429 ldb_dn_get_linearized(ac->msg->dn));
1430 if (ret != LDB_SUCCESS) {
1434 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1435 if (ret != LDB_SUCCESS) {
1440 /* Add a "member" attribute for the previous primary group */
1441 msg = ldb_msg_new(ac->msg);
1443 return ldb_module_oom(ac->module);
1445 msg->dn = prev_prim_group_dn;
1447 ret = samdb_msg_add_addval(ldb, msg, msg, "member",
1448 ldb_dn_get_linearized(ac->msg->dn));
1449 if (ret != LDB_SUCCESS) {
1453 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1454 if (ret != LDB_SUCCESS) {
1462 static int samldb_prim_group_trigger(struct samldb_ctx *ac)
1466 if (ac->req->operation == LDB_ADD) {
1467 ret = samldb_prim_group_set(ac);
1469 ret = samldb_prim_group_change(ac);
1475 static int samldb_check_user_account_control_invariants(struct samldb_ctx *ac,
1476 uint32_t user_account_control)
1479 bool need_check = false;
1480 const struct uac_to_guid {
1485 const char *error_string;
1488 .uac = UF_TEMP_DUPLICATE_ACCOUNT,
1490 .error_string = "Updating the UF_TEMP_DUPLICATE_ACCOUNT flag is never allowed"
1493 .uac = UF_PARTIAL_SECRETS_ACCOUNT,
1494 .needs = UF_WORKSTATION_TRUST_ACCOUNT,
1495 .error_string = "Setting UF_PARTIAL_SECRETS_ACCOUNT only permitted with UF_WORKSTATION_TRUST_ACCOUNT"
1498 .uac = UF_TRUSTED_FOR_DELEGATION,
1499 .not_with = UF_PARTIAL_SECRETS_ACCOUNT,
1500 .error_string = "Setting UF_TRUSTED_FOR_DELEGATION not allowed with UF_PARTIAL_SECRETS_ACCOUNT"
1503 .uac = UF_NORMAL_ACCOUNT,
1504 .not_with = UF_ACCOUNT_TYPE_MASK & ~UF_NORMAL_ACCOUNT,
1505 .error_string = "Setting more than one account type not permitted"
1508 .uac = UF_WORKSTATION_TRUST_ACCOUNT,
1509 .not_with = UF_ACCOUNT_TYPE_MASK & ~UF_WORKSTATION_TRUST_ACCOUNT,
1510 .error_string = "Setting more than one account type not permitted"
1513 .uac = UF_INTERDOMAIN_TRUST_ACCOUNT,
1514 .not_with = UF_ACCOUNT_TYPE_MASK & ~UF_INTERDOMAIN_TRUST_ACCOUNT,
1515 .error_string = "Setting more than one account type not permitted"
1518 .uac = UF_SERVER_TRUST_ACCOUNT,
1519 .not_with = UF_ACCOUNT_TYPE_MASK & ~UF_SERVER_TRUST_ACCOUNT,
1520 .error_string = "Setting more than one account type not permitted"
1523 .uac = UF_TRUSTED_FOR_DELEGATION,
1524 .not_with = UF_PARTIAL_SECRETS_ACCOUNT,
1525 .error_string = "Setting UF_TRUSTED_FOR_DELEGATION not allowed with UF_PARTIAL_SECRETS_ACCOUNT"
1529 for (i = 0; i < ARRAY_SIZE(map); i++) {
1530 if (user_account_control & map[i].uac) {
1535 if (need_check == false) {
1539 for (i = 0; i < ARRAY_SIZE(map); i++) {
1540 uint32_t this_uac = user_account_control & map[i].uac;
1541 if (this_uac != 0) {
1543 ret = LDB_ERR_OTHER;
1545 } else if (map[i].needs != 0) {
1546 if ((map[i].needs & user_account_control) == 0) {
1547 ret = LDB_ERR_OTHER;
1550 } else if (map[i].not_with != 0) {
1551 if ((map[i].not_with & user_account_control) != 0) {
1552 ret = LDB_ERR_OTHER;
1558 if (ret != LDB_SUCCESS) {
1559 switch (ac->req->operation) {
1561 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
1562 "Failed to add %s: %s",
1563 ldb_dn_get_linearized(ac->msg->dn),
1564 map[i].error_string);
1567 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
1568 "Failed to modify %s: %s",
1569 ldb_dn_get_linearized(ac->msg->dn),
1570 map[i].error_string);
1573 return ldb_module_operr(ac->module);
1580 * Validate that the restriction in point 5 of MS-SAMR 3.1.1.8.10 userAccountControl is honoured
1583 static int samldb_check_user_account_control_acl(struct samldb_ctx *ac,
1584 struct dom_sid *sid,
1585 uint32_t user_account_control,
1586 uint32_t user_account_control_old)
1589 bool need_acl_check = false;
1590 struct ldb_result *res;
1591 const char * const sd_attrs[] = {"ntSecurityDescriptor", NULL};
1592 struct security_token *user_token;
1593 struct security_descriptor *domain_sd;
1594 struct ldb_dn *domain_dn = ldb_get_default_basedn(ldb_module_get_ctx(ac->module));
1595 const struct uac_to_guid {
1599 enum sec_privilege privilege;
1600 bool delete_is_privileged;
1601 const char *error_string;
1604 .uac = UF_PASSWD_NOTREQD,
1605 .guid = GUID_DRS_UPDATE_PASSWORD_NOT_REQUIRED_BIT,
1606 .error_string = "Adding the UF_PASSWD_NOTREQD bit in userAccountControl requires the Update-Password-Not-Required-Bit right that was not given on the Domain object"
1609 .uac = UF_DONT_EXPIRE_PASSWD,
1610 .guid = GUID_DRS_UNEXPIRE_PASSWORD,
1611 .error_string = "Adding the UF_DONT_EXPIRE_PASSWD bit in userAccountControl requires the Unexpire-Password right that was not given on the Domain object"
1614 .uac = UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED,
1615 .guid = GUID_DRS_ENABLE_PER_USER_REVERSIBLY_ENCRYPTED_PASSWORD,
1616 .error_string = "Adding the UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED bit in userAccountControl requires the Enable-Per-User-Reversibly-Encrypted-Password right that was not given on the Domain object"
1619 .uac = UF_SERVER_TRUST_ACCOUNT,
1620 .guid = GUID_DRS_DS_INSTALL_REPLICA,
1621 .error_string = "Adding the UF_SERVER_TRUST_ACCOUNT bit in userAccountControl requires the DS-Install-Replica right that was not given on the Domain object"
1624 .uac = UF_PARTIAL_SECRETS_ACCOUNT,
1625 .guid = GUID_DRS_DS_INSTALL_REPLICA,
1626 .error_string = "Adding the UF_PARTIAL_SECRETS_ACCOUNT bit in userAccountControl requires the DS-Install-Replica right that was not given on the Domain object"
1629 .uac = UF_INTERDOMAIN_TRUST_ACCOUNT,
1630 .oid = DSDB_CONTROL_PERMIT_INTERDOMAIN_TRUST_UAC_OID,
1631 .error_string = "Updating the UF_INTERDOMAIN_TRUST_ACCOUNT bit in userAccountControl is not permitted over LDAP. This bit is restricted to the LSA CreateTrustedDomain interface",
1632 .delete_is_privileged = true
1635 .uac = UF_TRUSTED_FOR_DELEGATION,
1636 .privilege = SEC_PRIV_ENABLE_DELEGATION,
1637 .delete_is_privileged = true,
1638 .error_string = "Updating the UF_TRUSTED_FOR_DELEGATION bit in userAccountControl is not permitted without the SeEnableDelegationPrivilege"
1641 .uac = UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION,
1642 .privilege = SEC_PRIV_ENABLE_DELEGATION,
1643 .delete_is_privileged = true,
1644 .error_string = "Updating the UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION bit in userAccountControl is not permitted without the SeEnableDelegationPrivilege"
1649 if (dsdb_module_am_system(ac->module)) {
1653 for (i = 0; i < ARRAY_SIZE(map); i++) {
1654 if (user_account_control & map[i].uac) {
1655 need_acl_check = true;
1659 if (need_acl_check == false) {
1663 user_token = acl_user_token(ac->module);
1664 if (user_token == NULL) {
1665 return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
1668 ret = dsdb_module_search_dn(ac->module, ac, &res,
1671 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
1673 if (ret != LDB_SUCCESS) {
1676 if (res->count != 1) {
1677 return ldb_module_operr(ac->module);
1680 ret = dsdb_get_sd_from_ldb_message(ldb_module_get_ctx(ac->module),
1681 ac, res->msgs[0], &domain_sd);
1683 if (ret != LDB_SUCCESS) {
1687 for (i = 0; i < ARRAY_SIZE(map); i++) {
1688 uint32_t this_uac_new = user_account_control & map[i].uac;
1689 uint32_t this_uac_old = user_account_control_old & map[i].uac;
1690 if (this_uac_new != this_uac_old) {
1691 if (this_uac_old != 0) {
1692 if (map[i].delete_is_privileged == false) {
1697 struct ldb_control *control = ldb_request_get_control(ac->req, map[i].oid);
1698 if (control == NULL) {
1699 ret = LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
1701 } else if (map[i].privilege != SEC_PRIV_INVALID) {
1702 bool have_priv = security_token_has_privilege(user_token,
1704 if (have_priv == false) {
1705 ret = LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
1708 ret = acl_check_extended_right(ac, domain_sd,
1711 SEC_ADS_CONTROL_ACCESS,
1714 if (ret != LDB_SUCCESS) {
1719 if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
1720 switch (ac->req->operation) {
1722 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
1723 "Failed to add %s: %s",
1724 ldb_dn_get_linearized(ac->msg->dn),
1725 map[i].error_string);
1728 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
1729 "Failed to modify %s: %s",
1730 ldb_dn_get_linearized(ac->msg->dn),
1731 map[i].error_string);
1734 return ldb_module_operr(ac->module);
1737 dsdb_acl_debug(domain_sd, acl_user_token(ac->module),
1746 static int samldb_check_user_account_control_rules(struct samldb_ctx *ac,
1747 struct dom_sid *sid,
1748 uint32_t user_account_control,
1749 uint32_t user_account_control_old)
1752 ret = samldb_check_user_account_control_invariants(ac, user_account_control);
1753 if (ret != LDB_SUCCESS) {
1756 ret = samldb_check_user_account_control_acl(ac, sid, user_account_control, user_account_control_old);
1757 if (ret != LDB_SUCCESS) {
1765 * This function is called on LDB modify operations. It performs some additions/
1766 * replaces on the current LDB message when "userAccountControl" changes.
1768 static int samldb_user_account_control_change(struct samldb_ctx *ac)
1770 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1783 NTTIME old_lockoutTime;
1784 struct ldb_message_element *el;
1785 struct ldb_val *val;
1786 struct ldb_val computer_val;
1787 struct ldb_message *tmp_msg;
1788 struct dom_sid *sid;
1790 struct ldb_result *res;
1791 const char * const attrs[] = {
1793 "isCriticalSystemObject",
1794 "userAccountControl",
1795 "msDS-User-Account-Control-Computed",
1800 bool is_computer = false;
1801 bool old_is_critical = false;
1802 bool new_is_critical = false;
1804 el = dsdb_get_single_valued_attr(ac->msg, "userAccountControl",
1805 ac->req->operation);
1806 if (el == NULL || el->num_values == 0) {
1807 ldb_asprintf_errstring(ldb,
1808 "%08X: samldb: 'userAccountControl' can't be deleted!",
1809 W_ERROR_V(WERR_DS_ILLEGAL_MOD_OPERATION));
1810 return LDB_ERR_UNWILLING_TO_PERFORM;
1813 /* Create a temporary message for fetching the "userAccountControl" */
1814 tmp_msg = ldb_msg_new(ac->msg);
1815 if (tmp_msg == NULL) {
1816 return ldb_module_oom(ac->module);
1818 ret = ldb_msg_add(tmp_msg, el, 0);
1819 if (ret != LDB_SUCCESS) {
1822 raw_uac = ldb_msg_find_attr_as_uint(tmp_msg,
1823 "userAccountControl",
1825 new_acb = samdb_result_acct_flags(tmp_msg, NULL);
1826 talloc_free(tmp_msg);
1828 * UF_LOCKOUT and UF_PASSWORD_EXPIRED are only generated
1829 * and not stored. We ignore them almost completely.
1831 * The only exception is the resulting ACB_AUTOLOCK in clear_acb.
1833 new_uac = raw_uac & ~(UF_LOCKOUT|UF_PASSWORD_EXPIRED);
1835 /* Fetch the old "userAccountControl" and "objectClass" */
1836 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1837 DSDB_FLAG_NEXT_MODULE, ac->req);
1838 if (ret != LDB_SUCCESS) {
1841 old_uac = ldb_msg_find_attr_as_uint(res->msgs[0], "userAccountControl", 0);
1843 return ldb_operr(ldb);
1845 old_acb = samdb_result_acct_flags(res->msgs[0],
1846 "msDS-User-Account-Control-Computed");
1847 old_lockoutTime = ldb_msg_find_attr_as_int64(res->msgs[0],
1849 old_is_critical = ldb_msg_find_attr_as_bool(res->msgs[0],
1850 "isCriticalSystemObject", 0);
1851 /* When we do not have objectclass "omputer" we cannot switch to a (read-only) DC */
1852 el = ldb_msg_find_element(res->msgs[0], "objectClass");
1854 return ldb_operr(ldb);
1856 computer_val = data_blob_string_const("computer");
1857 val = ldb_msg_find_val(el, &computer_val);
1862 old_ufa = old_uac & UF_ACCOUNT_TYPE_MASK;
1863 old_atype = ds_uf2atype(old_ufa);
1864 old_pgrid = ds_uf2prim_group_rid(old_uac);
1866 new_ufa = new_uac & UF_ACCOUNT_TYPE_MASK;
1869 * When there is no account type embedded in "userAccountControl"
1870 * fall back to UF_NORMAL_ACCOUNT.
1872 new_ufa = UF_NORMAL_ACCOUNT;
1875 sid = samdb_result_dom_sid(res, res->msgs[0], "objectSid");
1877 return ldb_module_operr(ac->module);
1880 ret = samldb_check_user_account_control_rules(ac, sid, new_uac, old_uac);
1881 if (ret != LDB_SUCCESS) {
1885 new_atype = ds_uf2atype(new_ufa);
1886 new_pgrid = ds_uf2prim_group_rid(new_uac);
1888 clear_acb = old_acb & ~new_acb;
1891 case UF_NORMAL_ACCOUNT:
1892 new_is_critical = old_is_critical;
1895 case UF_INTERDOMAIN_TRUST_ACCOUNT:
1896 new_is_critical = true;
1899 case UF_WORKSTATION_TRUST_ACCOUNT:
1900 new_is_critical = false;
1901 if (new_uac & UF_PARTIAL_SECRETS_ACCOUNT) {
1903 ldb_asprintf_errstring(ldb,
1904 "%08X: samldb: UF_PARTIAL_SECRETS_ACCOUNT "
1905 "requires objectclass 'computer'!",
1906 W_ERROR_V(WERR_DS_MACHINE_ACCOUNT_CREATED_PRENT4));
1907 return LDB_ERR_UNWILLING_TO_PERFORM;
1909 new_is_critical = true;
1913 case UF_SERVER_TRUST_ACCOUNT:
1915 ldb_asprintf_errstring(ldb,
1916 "%08X: samldb: UF_SERVER_TRUST_ACCOUNT "
1917 "requires objectclass 'computer'!",
1918 W_ERROR_V(WERR_DS_MACHINE_ACCOUNT_CREATED_PRENT4));
1919 return LDB_ERR_UNWILLING_TO_PERFORM;
1921 new_is_critical = true;
1925 ldb_asprintf_errstring(ldb,
1926 "%08X: samldb: invalid userAccountControl[0x%08X]",
1927 W_ERROR_V(WERR_INVALID_PARAMETER), raw_uac);
1928 return LDB_ERR_OTHER;
1931 if (old_atype != new_atype) {
1932 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1933 "sAMAccountType", new_atype);
1934 if (ret != LDB_SUCCESS) {
1937 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
1938 el->flags = LDB_FLAG_MOD_REPLACE;
1941 /* As per MS-SAMR 3.1.1.8.10 these flags have not to be set */
1942 if ((clear_acb & ACB_AUTOLOCK) && (old_lockoutTime != 0)) {
1943 /* "pwdLastSet" reset as password expiration has been forced */
1944 ldb_msg_remove_attr(ac->msg, "lockoutTime");
1945 ret = samdb_msg_add_uint64(ldb, ac->msg, ac->msg, "lockoutTime",
1947 if (ret != LDB_SUCCESS) {
1950 el = ldb_msg_find_element(ac->msg, "lockoutTime");
1951 el->flags = LDB_FLAG_MOD_REPLACE;
1954 /* "isCriticalSystemObject" might be set/changed */
1955 if (old_is_critical != new_is_critical) {
1956 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1957 new_is_critical ? "TRUE": "FALSE");
1958 if (ret != LDB_SUCCESS) {
1961 el = ldb_msg_find_element(ac->msg,
1962 "isCriticalSystemObject");
1963 el->flags = LDB_FLAG_MOD_REPLACE;
1966 if (!ldb_msg_find_element(ac->msg, "primaryGroupID") &&
1967 (old_pgrid != new_pgrid)) {
1968 /* Older AD deployments don't know about the RODC group */
1969 if (new_pgrid == DOMAIN_RID_READONLY_DCS) {
1970 ret = samldb_prim_group_tester(ac, new_pgrid);
1971 if (ret != LDB_SUCCESS) {
1976 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1977 "primaryGroupID", new_pgrid);
1978 if (ret != LDB_SUCCESS) {
1981 el = ldb_msg_find_element(ac->msg,
1983 el->flags = LDB_FLAG_MOD_REPLACE;
1986 /* Propagate eventual "userAccountControl" attribute changes */
1987 if (old_uac != new_uac) {
1988 char *tempstr = talloc_asprintf(ac->msg, "%d",
1990 if (tempstr == NULL) {
1991 return ldb_module_oom(ac->module);
1994 /* Overwrite "userAccountControl" correctly */
1995 el = dsdb_get_single_valued_attr(ac->msg, "userAccountControl",
1996 ac->req->operation);
1997 el->values[0].data = (uint8_t *) tempstr;
1998 el->values[0].length = strlen(tempstr);
2000 ldb_msg_remove_attr(ac->msg, "userAccountControl");
2006 static int samldb_lockout_time(struct samldb_ctx *ac)
2008 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2010 struct ldb_message_element *el;
2011 struct ldb_message *tmp_msg;
2014 el = dsdb_get_single_valued_attr(ac->msg, "lockoutTime",
2015 ac->req->operation);
2016 if (el == NULL || el->num_values == 0) {
2017 ldb_asprintf_errstring(ldb,
2018 "%08X: samldb: 'lockoutTime' can't be deleted!",
2019 W_ERROR_V(WERR_DS_ILLEGAL_MOD_OPERATION));
2020 return LDB_ERR_UNWILLING_TO_PERFORM;
2023 /* Create a temporary message for fetching the "lockoutTime" */
2024 tmp_msg = ldb_msg_new(ac->msg);
2025 if (tmp_msg == NULL) {
2026 return ldb_module_oom(ac->module);
2028 ret = ldb_msg_add(tmp_msg, el, 0);
2029 if (ret != LDB_SUCCESS) {
2032 lockoutTime = ldb_msg_find_attr_as_int64(tmp_msg,
2035 talloc_free(tmp_msg);
2037 if (lockoutTime != 0) {
2041 /* lockoutTime == 0 resets badPwdCount */
2042 ldb_msg_remove_attr(ac->msg, "badPwdCount");
2043 ret = samdb_msg_add_int(ldb, ac->msg, ac->msg,
2045 if (ret != LDB_SUCCESS) {
2048 el = ldb_msg_find_element(ac->msg, "badPwdCount");
2049 el->flags = LDB_FLAG_MOD_REPLACE;
2054 static int samldb_group_type_change(struct samldb_ctx *ac)
2056 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2057 uint32_t group_type, old_group_type, account_type;
2058 struct ldb_message_element *el;
2059 struct ldb_message *tmp_msg;
2061 struct ldb_result *res;
2062 const char * const attrs[] = { "groupType", NULL };
2064 el = dsdb_get_single_valued_attr(ac->msg, "groupType",
2065 ac->req->operation);
2067 /* we are not affected */
2071 /* Create a temporary message for fetching the "groupType" */
2072 tmp_msg = ldb_msg_new(ac->msg);
2073 if (tmp_msg == NULL) {
2074 return ldb_module_oom(ac->module);
2076 ret = ldb_msg_add(tmp_msg, el, 0);
2077 if (ret != LDB_SUCCESS) {
2080 group_type = ldb_msg_find_attr_as_uint(tmp_msg, "groupType", 0);
2081 talloc_free(tmp_msg);
2083 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
2084 DSDB_FLAG_NEXT_MODULE |
2085 DSDB_SEARCH_SHOW_DELETED, ac->req);
2086 if (ret != LDB_SUCCESS) {
2089 old_group_type = ldb_msg_find_attr_as_uint(res->msgs[0], "groupType", 0);
2090 if (old_group_type == 0) {
2091 return ldb_operr(ldb);
2094 /* Group type switching isn't so easy as it seems: We can only
2095 * change in this directions: global <-> universal <-> local
2096 * On each step also the group type itself
2097 * (security/distribution) is variable. */
2099 if (ldb_request_get_control(ac->req, LDB_CONTROL_PROVISION_OID) == NULL) {
2100 switch (group_type) {
2101 case GTYPE_SECURITY_GLOBAL_GROUP:
2102 case GTYPE_DISTRIBUTION_GLOBAL_GROUP:
2103 /* change to "universal" allowed */
2104 if ((old_group_type == GTYPE_SECURITY_DOMAIN_LOCAL_GROUP) ||
2105 (old_group_type == GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP)) {
2106 ldb_set_errstring(ldb,
2107 "samldb: Change from security/distribution local group forbidden!");
2108 return LDB_ERR_UNWILLING_TO_PERFORM;
2112 case GTYPE_SECURITY_UNIVERSAL_GROUP:
2113 case GTYPE_DISTRIBUTION_UNIVERSAL_GROUP:
2114 /* each change allowed */
2116 case GTYPE_SECURITY_DOMAIN_LOCAL_GROUP:
2117 case GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP:
2118 /* change to "universal" allowed */
2119 if ((old_group_type == GTYPE_SECURITY_GLOBAL_GROUP) ||
2120 (old_group_type == GTYPE_DISTRIBUTION_GLOBAL_GROUP)) {
2121 ldb_set_errstring(ldb,
2122 "samldb: Change from security/distribution global group forbidden!");
2123 return LDB_ERR_UNWILLING_TO_PERFORM;
2127 case GTYPE_SECURITY_BUILTIN_LOCAL_GROUP:
2129 /* we don't allow this "groupType" values */
2130 return LDB_ERR_UNWILLING_TO_PERFORM;
2135 account_type = ds_gtype2atype(group_type);
2136 if (account_type == 0) {
2137 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
2138 return LDB_ERR_UNWILLING_TO_PERFORM;
2140 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "sAMAccountType",
2142 if (ret != LDB_SUCCESS) {
2145 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
2146 el->flags = LDB_FLAG_MOD_REPLACE;
2151 static int samldb_sam_accountname_check(struct samldb_ctx *ac)
2153 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2154 const char * const no_attrs[] = { NULL };
2155 struct ldb_result *res;
2156 const char *sam_accountname, *enc_str;
2157 struct ldb_message_element *el;
2158 struct ldb_message *tmp_msg;
2161 el = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
2162 ac->req->operation);
2164 /* we are not affected */
2168 /* Create a temporary message for fetching the "sAMAccountName" */
2169 tmp_msg = ldb_msg_new(ac->msg);
2170 if (tmp_msg == NULL) {
2171 return ldb_module_oom(ac->module);
2173 ret = ldb_msg_add(tmp_msg, el, 0);
2174 if (ret != LDB_SUCCESS) {
2178 /* We must not steal the original string, it belongs to the caller! */
2179 sam_accountname = talloc_strdup(ac,
2180 ldb_msg_find_attr_as_string(tmp_msg, "sAMAccountName", NULL));
2181 talloc_free(tmp_msg);
2183 if (sam_accountname == NULL) {
2184 /* The "sAMAccountName" cannot be nothing */
2185 ldb_set_errstring(ldb,
2186 "samldb: Empty account names aren't allowed!");
2187 return LDB_ERR_UNWILLING_TO_PERFORM;
2190 enc_str = ldb_binary_encode_string(ac, sam_accountname);
2191 if (enc_str == NULL) {
2192 return ldb_module_oom(ac->module);
2195 /* Make sure that a "sAMAccountName" is only used once */
2197 ret = dsdb_module_search(ac->module, ac, &res,
2198 ldb_get_default_basedn(ldb),
2199 LDB_SCOPE_SUBTREE, no_attrs,
2200 DSDB_FLAG_NEXT_MODULE, ac->req,
2201 "(sAMAccountName=%s)", enc_str);
2202 if (ret != LDB_SUCCESS) {
2205 if (res->count > 1) {
2206 return ldb_operr(ldb);
2207 } else if (res->count == 1) {
2208 if (ldb_dn_compare(res->msgs[0]->dn, ac->msg->dn) != 0) {
2209 ldb_asprintf_errstring(ldb,
2210 "samldb: Account name (sAMAccountName) '%s' already in use!",
2212 return LDB_ERR_ENTRY_ALREADY_EXISTS;
2220 static int samldb_member_check(struct samldb_ctx *ac)
2222 const char * const attrs[] = { "objectSid", NULL };
2223 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2224 struct ldb_message_element *el;
2225 struct ldb_dn *member_dn;
2226 struct dom_sid *sid;
2227 struct ldb_result *res;
2228 struct dom_sid *group_sid;
2232 /* Fetch information from the existing object */
2234 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
2235 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req, NULL);
2236 if (ret != LDB_SUCCESS) {
2239 if (res->count != 1) {
2240 return ldb_operr(ldb);
2243 group_sid = samdb_result_dom_sid(res, res->msgs[0], "objectSid");
2244 if (group_sid == NULL) {
2245 return ldb_operr(ldb);
2248 /* We've to walk over all modification entries and consider the "member"
2250 for (i = 0; i < ac->msg->num_elements; i++) {
2251 if (ldb_attr_cmp(ac->msg->elements[i].name, "member") != 0) {
2255 el = &ac->msg->elements[i];
2256 for (j = 0; j < el->num_values; j++) {
2257 struct ldb_result *group_res;
2258 const char *group_attrs[] = { "primaryGroupID" , NULL };
2259 uint32_t prim_group_rid;
2261 if (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE) {
2262 /* Deletes will be handled in
2263 * repl_meta_data, and deletes not
2264 * matching a member will return
2265 * LDB_ERR_UNWILLING_TO_PERFORM
2270 member_dn = ldb_dn_from_ldb_val(ac, ldb,
2272 if (!ldb_dn_validate(member_dn)) {
2273 return ldb_operr(ldb);
2276 /* Denies to add "member"s to groups which are primary
2277 * ones for them - in this case return
2278 * ERR_ENTRY_ALREADY_EXISTS. */
2280 ret = dsdb_module_search_dn(ac->module, ac, &group_res,
2281 member_dn, group_attrs,
2282 DSDB_FLAG_NEXT_MODULE, ac->req);
2283 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
2284 /* member DN doesn't exist yet */
2287 if (ret != LDB_SUCCESS) {
2290 prim_group_rid = ldb_msg_find_attr_as_uint(group_res->msgs[0], "primaryGroupID", (uint32_t)-1);
2291 if (prim_group_rid == (uint32_t) -1) {
2292 /* the member hasn't to be a user account ->
2293 * therefore no check needed in this case. */
2297 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
2300 return ldb_operr(ldb);
2303 if (dom_sid_equal(group_sid, sid)) {
2304 ldb_asprintf_errstring(ldb,
2305 "samldb: member %s already set via primaryGroupID %u",
2306 ldb_dn_get_linearized(member_dn), prim_group_rid);
2307 return LDB_ERR_ENTRY_ALREADY_EXISTS;
2317 /* SAM objects have special rules regarding the "description" attribute on
2318 * modify operations. */
2319 static int samldb_description_check(struct samldb_ctx *ac, bool *modified)
2321 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2322 const char * const attrs[] = { "objectClass", "description", NULL };
2323 struct ldb_result *res;
2327 /* Fetch information from the existing object */
2328 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
2329 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req,
2330 "(|(objectclass=user)(objectclass=group)(objectclass=samDomain)(objectclass=samServer))");
2331 if (ret != LDB_SUCCESS) {
2332 /* don't treat it specially ... let normal error codes
2333 happen from other places */
2334 ldb_reset_err_string(ldb);
2337 if (res->count == 0) {
2338 /* we didn't match the filter */
2343 /* We've to walk over all modification entries and consider the
2344 * "description" ones. */
2345 for (i = 0; i < ac->msg->num_elements; i++) {
2346 if (ldb_attr_cmp(ac->msg->elements[i].name, "description") == 0) {
2347 ac->msg->elements[i].flags |= LDB_FLAG_INTERNAL_FORCE_SINGLE_VALUE_CHECK;
2357 /* This trigger adapts the "servicePrincipalName" attributes if the
2358 * "dNSHostName" and/or "sAMAccountName" attribute change(s) */
2359 static int samldb_service_principal_names_change(struct samldb_ctx *ac)
2361 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2362 struct ldb_message_element *el = NULL, *el2 = NULL;
2363 struct ldb_message *msg;
2364 const char * const attrs[] = { "servicePrincipalName", NULL };
2365 struct ldb_result *res;
2366 const char *dns_hostname = NULL, *old_dns_hostname = NULL,
2367 *sam_accountname = NULL, *old_sam_accountname = NULL;
2371 el = dsdb_get_single_valued_attr(ac->msg, "dNSHostName",
2372 ac->req->operation);
2373 el2 = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
2374 ac->req->operation);
2375 if ((el == NULL) && (el2 == NULL)) {
2376 /* we are not affected */
2380 /* Create a temporary message for fetching the "dNSHostName" */
2382 const char *dns_attrs[] = { "dNSHostName", NULL };
2383 msg = ldb_msg_new(ac->msg);
2385 return ldb_module_oom(ac->module);
2387 ret = ldb_msg_add(msg, el, 0);
2388 if (ret != LDB_SUCCESS) {
2391 dns_hostname = talloc_strdup(ac,
2392 ldb_msg_find_attr_as_string(msg, "dNSHostName", NULL));
2393 if (dns_hostname == NULL) {
2394 return ldb_module_oom(ac->module);
2399 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn,
2400 dns_attrs, DSDB_FLAG_NEXT_MODULE, ac->req);
2401 if (ret == LDB_SUCCESS) {
2402 old_dns_hostname = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
2406 /* Create a temporary message for fetching the "sAMAccountName" */
2408 char *tempstr, *tempstr2 = NULL;
2409 const char *acct_attrs[] = { "sAMAccountName", NULL };
2411 msg = ldb_msg_new(ac->msg);
2413 return ldb_module_oom(ac->module);
2415 ret = ldb_msg_add(msg, el2, 0);
2416 if (ret != LDB_SUCCESS) {
2419 tempstr = talloc_strdup(ac,
2420 ldb_msg_find_attr_as_string(msg, "sAMAccountName", NULL));
2423 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, acct_attrs,
2424 DSDB_FLAG_NEXT_MODULE, ac->req);
2425 if (ret == LDB_SUCCESS) {
2426 tempstr2 = talloc_strdup(ac,
2427 ldb_msg_find_attr_as_string(res->msgs[0],
2428 "sAMAccountName", NULL));
2432 /* The "sAMAccountName" needs some additional trimming: we need
2433 * to remove the trailing "$"s if they exist. */
2434 if ((tempstr != NULL) && (tempstr[0] != '\0') &&
2435 (tempstr[strlen(tempstr) - 1] == '$')) {
2436 tempstr[strlen(tempstr) - 1] = '\0';
2438 if ((tempstr2 != NULL) && (tempstr2[0] != '\0') &&
2439 (tempstr2[strlen(tempstr2) - 1] == '$')) {
2440 tempstr2[strlen(tempstr2) - 1] = '\0';
2442 sam_accountname = tempstr;
2443 old_sam_accountname = tempstr2;
2446 if (old_dns_hostname == NULL) {
2447 /* we cannot change when the old name is unknown */
2448 dns_hostname = NULL;
2450 if ((old_dns_hostname != NULL) && (dns_hostname != NULL) &&
2451 (strcasecmp_m(old_dns_hostname, dns_hostname) == 0)) {
2452 /* The "dNSHostName" didn't change */
2453 dns_hostname = NULL;
2456 if (old_sam_accountname == NULL) {
2457 /* we cannot change when the old name is unknown */
2458 sam_accountname = NULL;
2460 if ((old_sam_accountname != NULL) && (sam_accountname != NULL) &&
2461 (strcasecmp_m(old_sam_accountname, sam_accountname) == 0)) {
2462 /* The "sAMAccountName" didn't change */
2463 sam_accountname = NULL;
2466 if ((dns_hostname == NULL) && (sam_accountname == NULL)) {
2467 /* Well, there are information missing (old name(s)) or the
2468 * names didn't change. We've nothing to do and can exit here */
2472 /* Potential "servicePrincipalName" changes in the same request have to
2473 * be handled before the update (Windows behaviour). */
2474 el = ldb_msg_find_element(ac->msg, "servicePrincipalName");
2476 msg = ldb_msg_new(ac->msg);
2478 return ldb_module_oom(ac->module);
2480 msg->dn = ac->msg->dn;
2483 ret = ldb_msg_add(msg, el, el->flags);
2484 if (ret != LDB_SUCCESS) {
2488 ldb_msg_remove_element(ac->msg, el);
2490 el = ldb_msg_find_element(ac->msg,
2491 "servicePrincipalName");
2492 } while (el != NULL);
2494 ret = dsdb_module_modify(ac->module, msg,
2495 DSDB_FLAG_NEXT_MODULE, ac->req);
2496 if (ret != LDB_SUCCESS) {
2502 /* Fetch the "servicePrincipalName"s if any */
2503 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
2504 DSDB_FLAG_NEXT_MODULE, ac->req, NULL);
2505 if (ret != LDB_SUCCESS) {
2508 if ((res->count != 1) || (res->msgs[0]->num_elements > 1)) {
2509 return ldb_operr(ldb);
2512 if (res->msgs[0]->num_elements == 1) {
2514 * Yes, we do have "servicePrincipalName"s. First we update them
2515 * locally, that means we do always substitute the current
2516 * "dNSHostName" with the new one and/or "sAMAccountName"
2517 * without "$" with the new one and then we append the
2518 * modified "servicePrincipalName"s as a message element
2519 * replace to the modification request (Windows behaviour). We
2520 * need also to make sure that the values remain case-
2521 * insensitively unique.
2524 ret = ldb_msg_add_empty(ac->msg, "servicePrincipalName",
2525 LDB_FLAG_MOD_REPLACE, &el);
2526 if (ret != LDB_SUCCESS) {
2530 for (i = 0; i < res->msgs[0]->elements[0].num_values; i++) {
2531 char *old_str, *new_str, *pos;
2533 struct ldb_val *vals;
2537 res->msgs[0]->elements[0].values[i].data;
2539 new_str = talloc_strdup(ac->msg,
2540 strtok_r(old_str, "/", &pos));
2541 if (new_str == NULL) {
2542 return ldb_module_oom(ac->module);
2545 while ((tok = strtok_r(NULL, "/", &pos)) != NULL) {
2546 if ((dns_hostname != NULL) &&
2547 (strcasecmp_m(tok, old_dns_hostname) == 0)) {
2550 if ((sam_accountname != NULL) &&
2551 (strcasecmp_m(tok, old_sam_accountname) == 0)) {
2552 tok = sam_accountname;
2555 new_str = talloc_asprintf(ac->msg, "%s/%s",
2557 if (new_str == NULL) {
2558 return ldb_module_oom(ac->module);
2562 /* Uniqueness check */
2563 for (j = 0; (!found) && (j < el->num_values); j++) {
2564 if (strcasecmp_m((char *)el->values[j].data,
2574 * append the new "servicePrincipalName" -
2575 * code derived from ldb_msg_add_value().
2577 * Open coded to make it clear that we must
2578 * append to the MOD_REPLACE el created above.
2580 vals = talloc_realloc(ac->msg, el->values,
2582 el->num_values + 1);
2584 return ldb_module_oom(ac->module);
2587 el->values[el->num_values] = data_blob_string_const(new_str);
2597 /* This checks the "fSMORoleOwner" attributes */
2598 static int samldb_fsmo_role_owner_check(struct samldb_ctx *ac)
2600 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2601 const char * const no_attrs[] = { NULL };
2602 struct ldb_message_element *el;
2603 struct ldb_message *tmp_msg;
2604 struct ldb_dn *res_dn;
2605 struct ldb_result *res;
2608 el = dsdb_get_single_valued_attr(ac->msg, "fSMORoleOwner",
2609 ac->req->operation);
2611 /* we are not affected */
2615 /* Create a temporary message for fetching the "fSMORoleOwner" */
2616 tmp_msg = ldb_msg_new(ac->msg);
2617 if (tmp_msg == NULL) {
2618 return ldb_module_oom(ac->module);
2620 ret = ldb_msg_add(tmp_msg, el, 0);
2621 if (ret != LDB_SUCCESS) {
2624 res_dn = ldb_msg_find_attr_as_dn(ldb, ac, tmp_msg, "fSMORoleOwner");
2625 talloc_free(tmp_msg);
2627 if (res_dn == NULL) {
2628 ldb_set_errstring(ldb,
2629 "samldb: 'fSMORoleOwner' attributes have to reference 'nTDSDSA' entries!");
2630 if (ac->req->operation == LDB_ADD) {
2631 return LDB_ERR_CONSTRAINT_VIOLATION;
2633 return LDB_ERR_UNWILLING_TO_PERFORM;
2637 /* Fetched DN has to reference a "nTDSDSA" entry */
2638 ret = dsdb_module_search(ac->module, ac, &res, res_dn, LDB_SCOPE_BASE,
2640 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
2641 ac->req, "(objectClass=nTDSDSA)");
2642 if (ret != LDB_SUCCESS) {
2645 if (res->count != 1) {
2646 ldb_set_errstring(ldb,
2647 "samldb: 'fSMORoleOwner' attributes have to reference 'nTDSDSA' entries!");
2648 return LDB_ERR_UNWILLING_TO_PERFORM;
2658 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
2660 struct ldb_context *ldb;
2661 struct samldb_ctx *ac;
2662 struct ldb_message_element *el;
2665 ldb = ldb_module_get_ctx(module);
2666 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
2668 /* do not manipulate our control entries */
2669 if (ldb_dn_is_special(req->op.add.message->dn)) {
2670 return ldb_next_request(module, req);
2673 el = ldb_msg_find_element(req->op.add.message, "userParameters");
2674 if (el != NULL && ldb_req_is_untrusted(req)) {
2675 const char *reason = "samldb_add: "
2676 "setting userParameters is not supported over LDAP, "
2677 "see https://bugzilla.samba.org/show_bug.cgi?id=8077";
2678 ldb_debug(ldb, LDB_DEBUG_WARNING, "%s", reason);
2679 return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION, reason);
2682 ac = samldb_ctx_init(module, req);
2684 return ldb_operr(ldb);
2687 /* build the new msg */
2688 ac->msg = ldb_msg_copy_shallow(ac, req->op.add.message);
2689 if (ac->msg == NULL) {
2691 ldb_debug(ldb, LDB_DEBUG_FATAL,
2692 "samldb_add: ldb_msg_copy_shallow failed!\n");
2693 return ldb_operr(ldb);
2696 el = ldb_msg_find_element(ac->msg, "fSMORoleOwner");
2698 ret = samldb_fsmo_role_owner_check(ac);
2699 if (ret != LDB_SUCCESS) {
2704 if (samdb_find_attribute(ldb, ac->msg,
2705 "objectclass", "user") != NULL) {
2706 ac->type = SAMLDB_TYPE_USER;
2708 ret = samldb_prim_group_trigger(ac);
2709 if (ret != LDB_SUCCESS) {
2713 ret = samldb_objectclass_trigger(ac);
2714 if (ret != LDB_SUCCESS) {
2718 return samldb_fill_object(ac);
2721 if (samdb_find_attribute(ldb, ac->msg,
2722 "objectclass", "group") != NULL) {
2723 ac->type = SAMLDB_TYPE_GROUP;
2725 ret = samldb_objectclass_trigger(ac);
2726 if (ret != LDB_SUCCESS) {
2730 return samldb_fill_object(ac);
2733 /* perhaps a foreignSecurityPrincipal? */
2734 if (samdb_find_attribute(ldb, ac->msg,
2736 "foreignSecurityPrincipal") != NULL) {
2737 return samldb_fill_foreignSecurityPrincipal_object(ac);
2740 if (samdb_find_attribute(ldb, ac->msg,
2741 "objectclass", "classSchema") != NULL) {
2742 ret = samldb_schema_info_update(ac);
2743 if (ret != LDB_SUCCESS) {
2748 ac->type = SAMLDB_TYPE_CLASS;
2749 return samldb_fill_object(ac);
2752 if (samdb_find_attribute(ldb, ac->msg,
2753 "objectclass", "attributeSchema") != NULL) {
2754 ret = samldb_schema_info_update(ac);
2755 if (ret != LDB_SUCCESS) {
2760 ac->type = SAMLDB_TYPE_ATTRIBUTE;
2761 return samldb_fill_object(ac);
2766 /* nothing matched, go on */
2767 return ldb_next_request(module, req);
2771 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
2773 struct ldb_context *ldb;
2774 struct samldb_ctx *ac;
2775 struct ldb_message_element *el, *el2;
2776 bool modified = false;
2779 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2780 /* do not manipulate our control entries */
2781 return ldb_next_request(module, req);
2784 ldb = ldb_module_get_ctx(module);
2786 /* make sure that "objectSid" is not specified */
2787 el = ldb_msg_find_element(req->op.mod.message, "objectSid");
2789 if (ldb_request_get_control(req, LDB_CONTROL_PROVISION_OID) == NULL) {
2790 ldb_set_errstring(ldb,
2791 "samldb: objectSid must not be specified!");
2792 return LDB_ERR_UNWILLING_TO_PERFORM;
2795 /* make sure that "sAMAccountType" is not specified */
2796 el = ldb_msg_find_element(req->op.mod.message, "sAMAccountType");
2798 ldb_set_errstring(ldb,
2799 "samldb: sAMAccountType must not be specified!");
2800 return LDB_ERR_UNWILLING_TO_PERFORM;
2802 /* make sure that "isCriticalSystemObject" is not specified */
2803 el = ldb_msg_find_element(req->op.mod.message, "isCriticalSystemObject");
2805 if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID) == NULL) {
2806 ldb_set_errstring(ldb,
2807 "samldb: isCriticalSystemObject must not be specified!");
2808 return LDB_ERR_UNWILLING_TO_PERFORM;
2812 /* msDS-IntId is not allowed to be modified
2813 * except when modification comes from replication */
2814 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
2815 if (!ldb_request_get_control(req,
2816 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
2817 return LDB_ERR_CONSTRAINT_VIOLATION;
2821 el = ldb_msg_find_element(req->op.mod.message, "userParameters");
2822 if (el != NULL && ldb_req_is_untrusted(req)) {
2823 const char *reason = "samldb: "
2824 "setting userParameters is not supported over LDAP, "
2825 "see https://bugzilla.samba.org/show_bug.cgi?id=8077";
2826 ldb_debug(ldb, LDB_DEBUG_WARNING, "%s", reason);
2827 return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION, reason);
2830 ac = samldb_ctx_init(module, req);
2832 return ldb_operr(ldb);
2835 /* build the new msg */
2836 ac->msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
2837 if (ac->msg == NULL) {
2839 ldb_debug(ldb, LDB_DEBUG_FATAL,
2840 "samldb_modify: ldb_msg_copy_shallow failed!\n");
2841 return ldb_operr(ldb);
2844 el = ldb_msg_find_element(ac->msg, "primaryGroupID");
2846 ret = samldb_prim_group_trigger(ac);
2847 if (ret != LDB_SUCCESS) {
2852 el = ldb_msg_find_element(ac->msg, "userAccountControl");
2855 ret = samldb_user_account_control_change(ac);
2856 if (ret != LDB_SUCCESS) {
2861 el = ldb_msg_find_element(ac->msg, "lockoutTime");
2864 ret = samldb_lockout_time(ac);
2865 if (ret != LDB_SUCCESS) {
2870 el = ldb_msg_find_element(ac->msg, "groupType");
2873 ret = samldb_group_type_change(ac);
2874 if (ret != LDB_SUCCESS) {
2879 el = ldb_msg_find_element(ac->msg, "sAMAccountName");
2881 ret = samldb_sam_accountname_check(ac);
2882 if (ret != LDB_SUCCESS) {
2887 el = ldb_msg_find_element(ac->msg, "member");
2889 ret = samldb_member_check(ac);
2890 if (ret != LDB_SUCCESS) {
2895 el = ldb_msg_find_element(ac->msg, "description");
2897 ret = samldb_description_check(ac, &modified);
2898 if (ret != LDB_SUCCESS) {
2903 el = ldb_msg_find_element(ac->msg, "dNSHostName");
2904 el2 = ldb_msg_find_element(ac->msg, "sAMAccountName");
2905 if ((el != NULL) || (el2 != NULL)) {
2907 ret = samldb_service_principal_names_change(ac);
2908 if (ret != LDB_SUCCESS) {
2913 el = ldb_msg_find_element(ac->msg, "fSMORoleOwner");
2915 ret = samldb_fsmo_role_owner_check(ac);
2916 if (ret != LDB_SUCCESS) {
2922 struct ldb_request *child_req;
2924 /* Now perform the real modifications as a child request */
2925 ret = ldb_build_mod_req(&child_req, ldb, ac,
2928 req, dsdb_next_callback,
2930 LDB_REQ_SET_LOCATION(child_req);
2931 if (ret != LDB_SUCCESS) {
2935 return ldb_next_request(module, child_req);
2940 /* no change which interests us, go on */
2941 return ldb_next_request(module, req);
2946 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
2948 struct ldb_context *ldb;
2949 struct dom_sid *sid;
2953 struct ldb_result *res;
2954 const char * const attrs[] = { "objectSid", "isDeleted", NULL };
2955 const char * const noattrs[] = { NULL };
2957 ldb = ldb_module_get_ctx(ac->module);
2959 /* Finds out the SID/RID of the SAM object */
2960 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->req->op.del.dn,
2962 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
2964 if (ret != LDB_SUCCESS) {
2968 if (ldb_msg_check_string_attribute(res->msgs[0], "isDeleted", "TRUE")) {
2972 sid = samdb_result_dom_sid(ac, res->msgs[0], "objectSid");
2974 /* No SID - it might not be a SAM object - therefore ok */
2977 status = dom_sid_split_rid(ac, sid, NULL, &rid);
2978 if (!NT_STATUS_IS_OK(status)) {
2979 return ldb_operr(ldb);
2982 /* Special object (security principal?) */
2985 /* do not allow deletion of well-known sids */
2986 if (rid < DSDB_SAMDB_MINIMUM_ALLOWED_RID &&
2987 (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) == NULL)) {
2988 return LDB_ERR_OTHER;
2991 /* Deny delete requests from groups which are primary ones */
2992 ret = dsdb_module_search(ac->module, ac, &res,
2993 ldb_get_default_basedn(ldb),
2994 LDB_SCOPE_SUBTREE, noattrs,
2995 DSDB_FLAG_NEXT_MODULE,
2997 "(&(primaryGroupID=%u)(objectClass=user))", rid);
2998 if (ret != LDB_SUCCESS) {
3001 if (res->count > 0) {
3002 return LDB_ERR_ENTRY_ALREADY_EXISTS;
3008 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
3010 struct samldb_ctx *ac;
3013 if (ldb_dn_is_special(req->op.del.dn)) {
3014 /* do not manipulate our control entries */
3015 return ldb_next_request(module, req);
3018 ac = samldb_ctx_init(module, req);
3020 return ldb_operr(ldb_module_get_ctx(module));
3023 ret = samldb_prim_group_users_check(ac);
3024 if (ret != LDB_SUCCESS) {
3030 return ldb_next_request(module, req);
3035 static int check_rename_constraints(struct ldb_message *msg,
3036 struct samldb_ctx *ac,
3037 struct ldb_dn *olddn, struct ldb_dn *newdn)
3039 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
3040 struct ldb_dn *dn1, *dn2, *nc_root;
3041 int32_t systemFlags;
3042 bool move_op = false;
3043 bool rename_op = false;
3046 /* Skip the checks if old and new DN are the same, or if we have the
3047 * relax control specified or if the returned objects is already
3048 * deleted and needs only to be moved for consistency. */
3050 if (ldb_dn_compare(olddn, newdn) == 0) {
3053 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) != NULL) {
3056 if (ldb_msg_find_attr_as_bool(msg, "isDeleted", false)) {
3060 /* Objects under CN=System */
3062 dn1 = ldb_dn_copy(ac, ldb_get_default_basedn(ldb));
3063 if (dn1 == NULL) return ldb_oom(ldb);
3065 if ( ! ldb_dn_add_child_fmt(dn1, "CN=System")) {
3067 return LDB_ERR_OPERATIONS_ERROR;
3070 if ((ldb_dn_compare_base(dn1, olddn) == 0) &&
3071 (ldb_dn_compare_base(dn1, newdn) != 0)) {
3073 ldb_asprintf_errstring(ldb,
3074 "subtree_rename: Cannot move/rename %s. Objects under CN=System have to stay under it!",
3075 ldb_dn_get_linearized(olddn));
3076 return LDB_ERR_OTHER;
3083 if ((samdb_find_attribute(ldb, msg, "objectClass", "secret") != NULL) ||
3084 (samdb_find_attribute(ldb, msg, "objectClass", "trustedDomain") != NULL)) {
3085 ldb_asprintf_errstring(ldb,
3086 "subtree_rename: Cannot move/rename %s. It's an LSA-specific object!",
3087 ldb_dn_get_linearized(olddn));
3088 return LDB_ERR_UNWILLING_TO_PERFORM;
3093 dn1 = ldb_dn_get_parent(ac, olddn);
3094 if (dn1 == NULL) return ldb_oom(ldb);
3095 dn2 = ldb_dn_get_parent(ac, newdn);
3096 if (dn2 == NULL) return ldb_oom(ldb);
3098 if (ldb_dn_compare(dn1, dn2) == 0) {
3107 systemFlags = ldb_msg_find_attr_as_int(msg, "systemFlags", 0);
3109 /* Fetch name context */
3111 ret = dsdb_find_nc_root(ldb, ac, olddn, &nc_root);
3112 if (ret != LDB_SUCCESS) {
3116 if (ldb_dn_compare(nc_root, ldb_get_schema_basedn(ldb)) == 0) {
3118 ldb_asprintf_errstring(ldb,
3119 "subtree_rename: Cannot move %s within schema partition",
3120 ldb_dn_get_linearized(olddn));
3121 return LDB_ERR_UNWILLING_TO_PERFORM;
3124 (systemFlags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) != 0) {
3125 ldb_asprintf_errstring(ldb,
3126 "subtree_rename: Cannot rename %s within schema partition",
3127 ldb_dn_get_linearized(olddn));
3128 return LDB_ERR_UNWILLING_TO_PERFORM;
3130 } else if (ldb_dn_compare(nc_root, ldb_get_config_basedn(ldb)) == 0) {
3132 (systemFlags & SYSTEM_FLAG_CONFIG_ALLOW_MOVE) == 0) {
3133 /* Here we have to do more: control the
3134 * "ALLOW_LIMITED_MOVE" flag. This means that the
3135 * grand-grand-parents of two objects have to be equal
3136 * in order to perform the move (this is used for
3137 * moving "server" objects in the "sites" container). */
3139 systemFlags & SYSTEM_FLAG_CONFIG_ALLOW_LIMITED_MOVE;
3142 dn1 = ldb_dn_copy(ac, olddn);
3143 if (dn1 == NULL) return ldb_oom(ldb);
3144 dn2 = ldb_dn_copy(ac, newdn);
3145 if (dn2 == NULL) return ldb_oom(ldb);
3147 limited_move &= ldb_dn_remove_child_components(dn1, 3);
3148 limited_move &= ldb_dn_remove_child_components(dn2, 3);
3149 limited_move &= ldb_dn_compare(dn1, dn2) == 0;
3155 if (!limited_move) {
3156 ldb_asprintf_errstring(ldb,
3157 "subtree_rename: Cannot move %s to %s in config partition",
3158 ldb_dn_get_linearized(olddn), ldb_dn_get_linearized(newdn));
3159 return LDB_ERR_UNWILLING_TO_PERFORM;
3163 (systemFlags & SYSTEM_FLAG_CONFIG_ALLOW_RENAME) == 0) {
3164 ldb_asprintf_errstring(ldb,
3165 "subtree_rename: Cannot rename %s to %s within config partition",
3166 ldb_dn_get_linearized(olddn), ldb_dn_get_linearized(newdn));
3167 return LDB_ERR_UNWILLING_TO_PERFORM;
3169 } else if (ldb_dn_compare(nc_root, ldb_get_default_basedn(ldb)) == 0) {
3171 (systemFlags & SYSTEM_FLAG_DOMAIN_DISALLOW_MOVE) != 0) {
3172 ldb_asprintf_errstring(ldb,
3173 "subtree_rename: Cannot move %s to %s - DISALLOW_MOVE set",
3174 ldb_dn_get_linearized(olddn), ldb_dn_get_linearized(newdn));
3175 return LDB_ERR_UNWILLING_TO_PERFORM;
3178 (systemFlags & SYSTEM_FLAG_DOMAIN_DISALLOW_RENAME) != 0) {
3179 ldb_asprintf_errstring(ldb,
3180 "subtree_rename: Cannot rename %s to %s - DISALLOW_RENAME set",
3181 ldb_dn_get_linearized(olddn), ldb_dn_get_linearized(newdn));
3182 return LDB_ERR_UNWILLING_TO_PERFORM;
3186 talloc_free(nc_root);
3192 static int samldb_rename_search_base_callback(struct ldb_request *req,
3193 struct ldb_reply *ares)
3195 struct samldb_ctx *ac;
3198 ac = talloc_get_type(req->context, struct samldb_ctx);
3201 return ldb_module_done(ac->req, NULL, NULL,
3202 LDB_ERR_OPERATIONS_ERROR);
3204 if (ares->error != LDB_SUCCESS) {
3205 return ldb_module_done(ac->req, ares->controls,
3206 ares->response, ares->error);
3209 switch (ares->type) {
3210 case LDB_REPLY_ENTRY:
3212 * This is the root entry of the originating move
3213 * respectively rename request. It has been already
3214 * stored in the list using "subtree_rename_search()".
3215 * Only this one is subject to constraint checking.
3217 ret = check_rename_constraints(ares->message, ac,
3218 ac->req->op.rename.olddn,
3219 ac->req->op.rename.newdn);
3220 if (ret != LDB_SUCCESS) {
3221 return ldb_module_done(ac->req, NULL, NULL,
3226 case LDB_REPLY_REFERRAL:
3230 case LDB_REPLY_DONE:
3233 * Great, no problem with the rename, so go ahead as
3234 * if we never were here
3236 ret = ldb_next_request(ac->module, ac->req);
3247 static int samldb_rename(struct ldb_module *module, struct ldb_request *req)
3249 struct ldb_context *ldb;
3250 static const char * const attrs[] = { "objectClass", "systemFlags",
3251 "isDeleted", NULL };
3252 struct ldb_request *search_req;
3253 struct samldb_ctx *ac;
3256 if (ldb_dn_is_special(req->op.rename.olddn)) { /* do not manipulate our control entries */
3257 return ldb_next_request(module, req);
3260 ldb = ldb_module_get_ctx(module);
3262 ac = samldb_ctx_init(module, req);
3264 return ldb_oom(ldb);
3267 ret = ldb_build_search_req(&search_req, ldb, ac,
3268 req->op.rename.olddn,
3274 samldb_rename_search_base_callback,
3276 LDB_REQ_SET_LOCATION(search_req);
3277 if (ret != LDB_SUCCESS) {
3281 ret = ldb_request_add_control(search_req, LDB_CONTROL_SHOW_RECYCLED_OID,
3283 if (ret != LDB_SUCCESS) {
3287 return ldb_next_request(ac->module, search_req);
3292 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
3294 struct ldb_context *ldb = ldb_module_get_ctx(module);
3295 struct dsdb_fsmo_extended_op *exop;
3298 exop = talloc_get_type(req->op.extended.data,
3299 struct dsdb_fsmo_extended_op);
3301 ldb_set_errstring(ldb,
3302 "samldb_extended_allocate_rid_pool: invalid extended data");
3303 return LDB_ERR_PROTOCOL_ERROR;
3306 ret = ridalloc_allocate_rid_pool_fsmo(module, exop, req);
3307 if (ret != LDB_SUCCESS) {
3311 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
3314 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
3316 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
3317 return samldb_extended_allocate_rid_pool(module, req);
3320 return ldb_next_request(module, req);
3324 static const struct ldb_module_ops ldb_samldb_module_ops = {
3327 .modify = samldb_modify,
3328 .del = samldb_delete,
3329 .rename = samldb_rename,
3330 .extended = samldb_extended
3334 int ldb_samldb_module_init(const char *version)
3336 LDB_MODULE_CHECK_VERSION(version);
3337 return ldb_register_module(&ldb_samldb_module_ops);