4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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 "dsdb/samdb/samdb.h"
37 #include "dsdb/samdb/ldb_modules/util.h"
38 #include "dsdb/samdb/ldb_modules/ridalloc.h"
39 #include "libcli/security/security.h"
40 #include "librpc/gen_ndr/ndr_security.h"
42 #include "param/param.h"
43 #include "libds/common/flag_mapping.h"
46 enum samldb_add_type {
53 typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
56 struct samldb_step *next;
61 struct ldb_module *module;
62 struct ldb_request *req;
64 /* used for add operations */
65 enum samldb_add_type type;
67 /* the resulting message */
68 struct ldb_message *msg;
70 /* used in "samldb_find_for_defaultObjectCategory" */
71 struct ldb_dn *dn, *res_dn;
73 /* all the async steps necessary to complete the operation */
74 struct samldb_step *steps;
75 struct samldb_step *curstep;
77 /* If someone set an ares to forward controls and response back to the caller */
78 struct ldb_reply *ares;
81 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
82 struct ldb_request *req)
84 struct ldb_context *ldb;
85 struct samldb_ctx *ac;
87 ldb = ldb_module_get_ctx(module);
89 ac = talloc_zero(req, struct samldb_ctx);
101 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
103 struct samldb_step *step, *stepper;
105 step = talloc_zero(ac, struct samldb_step);
107 return ldb_oom(ldb_module_get_ctx(ac->module));
112 if (ac->steps == NULL) {
116 if (ac->curstep == NULL)
117 return ldb_operr(ldb_module_get_ctx(ac->module));
118 for (stepper = ac->curstep; stepper->next != NULL;
119 stepper = stepper->next);
120 stepper->next = step;
126 static int samldb_first_step(struct samldb_ctx *ac)
128 if (ac->steps == NULL) {
129 return ldb_operr(ldb_module_get_ctx(ac->module));
132 ac->curstep = ac->steps;
133 return ac->curstep->fn(ac);
136 static int samldb_next_step(struct samldb_ctx *ac)
138 if (ac->curstep->next) {
139 ac->curstep = ac->curstep->next;
140 return ac->curstep->fn(ac);
143 /* We exit the samldb module here. If someone set an "ares" to forward
144 * controls and response back to the caller, use them. */
146 return ldb_module_done(ac->req, ac->ares->controls,
147 ac->ares->response, LDB_SUCCESS);
149 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
154 /* sAMAccountName handling */
156 static int samldb_generate_sAMAccountName(struct ldb_context *ldb,
157 struct ldb_message *msg)
161 /* Format: $000000-000000000000 */
163 name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
164 (unsigned int)generate_random(),
165 (unsigned int)generate_random(),
166 (unsigned int)generate_random());
170 return ldb_msg_add_steal_string(msg, "sAMAccountName", name);
173 static int samldb_check_sAMAccountName(struct samldb_ctx *ac)
175 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
178 struct ldb_result *res;
179 const char * const noattrs[] = { NULL };
181 if (ldb_msg_find_element(ac->msg, "sAMAccountName") == NULL) {
182 ret = samldb_generate_sAMAccountName(ldb, ac->msg);
183 if (ret != LDB_SUCCESS) {
188 name = ldb_msg_find_attr_as_string(ac->msg, "sAMAccountName", NULL);
190 /* The "sAMAccountName" cannot be nothing */
191 ldb_set_errstring(ldb,
192 "samldb: Empty account names aren't allowed!");
193 return LDB_ERR_CONSTRAINT_VIOLATION;
196 ret = dsdb_module_search(ac->module, ac, &res,
197 ldb_get_default_basedn(ldb), LDB_SCOPE_SUBTREE, noattrs,
198 DSDB_FLAG_NEXT_MODULE,
200 "(sAMAccountName=%s)",
201 ldb_binary_encode_string(ac, name));
202 if (ret != LDB_SUCCESS) {
205 if (res->count != 0) {
206 ldb_asprintf_errstring(ldb,
207 "samldb: Account name (sAMAccountName) '%s' already in use!",
210 return LDB_ERR_ENTRY_ALREADY_EXISTS;
214 return samldb_next_step(ac);
218 static bool samldb_msg_add_sid(struct ldb_message *msg,
220 const struct dom_sid *sid)
223 enum ndr_err_code ndr_err;
225 ndr_err = ndr_push_struct_blob(&v, msg, sid,
226 (ndr_push_flags_fn_t)ndr_push_dom_sid);
227 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
230 return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
234 /* allocate a SID using our RID Set */
235 static int samldb_allocate_sid(struct samldb_ctx *ac)
239 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
242 ret = ridalloc_allocate_rid(ac->module, &rid, ac->req);
243 if (ret != LDB_SUCCESS) {
247 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
249 return ldb_module_oom(ac->module);
252 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
253 return ldb_operr(ldb);
256 return samldb_next_step(ac);
260 see if a krbtgt_number is available
262 static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac,
263 uint32_t krbtgt_number)
265 TALLOC_CTX *tmp_ctx = talloc_new(ac);
266 struct ldb_result *res;
267 const char * const no_attrs[] = { NULL };
270 ret = dsdb_module_search(ac->module, tmp_ctx, &res,
271 ldb_get_default_basedn(ldb_module_get_ctx(ac->module)),
272 LDB_SCOPE_SUBTREE, no_attrs,
273 DSDB_FLAG_NEXT_MODULE,
275 "(msDC-SecondaryKrbTgtNumber=%u)",
277 if (ret == LDB_SUCCESS && res->count == 0) {
278 talloc_free(tmp_ctx);
281 talloc_free(tmp_ctx);
285 /* special handling for add in RODC join */
286 static int samldb_rodc_add(struct samldb_ctx *ac)
288 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
289 uint32_t krbtgt_number, i_start, i;
292 struct ldb_val newpass_utf16;
294 /* find a unused msDC-SecondaryKrbTgtNumber */
295 i_start = generate_random() & 0xFFFF;
300 for (i=i_start; i<=0xFFFF; i++) {
301 if (samldb_krbtgtnumber_available(ac, i)) {
306 for (i=1; i<i_start; i++) {
307 if (samldb_krbtgtnumber_available(ac, i)) {
313 ldb_asprintf_errstring(ldb,
314 "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
315 W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
316 return LDB_ERR_OTHER;
319 ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber",
320 LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
321 if (ret != LDB_SUCCESS) {
322 return ldb_operr(ldb);
325 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
326 "msDS-SecondaryKrbTgtNumber", krbtgt_number);
327 if (ret != LDB_SUCCESS) {
328 return ldb_operr(ldb);
331 ret = ldb_msg_add_fmt(ac->msg, "sAMAccountName", "krbtgt_%u",
333 if (ret != LDB_SUCCESS) {
334 return ldb_operr(ldb);
337 newpass = generate_random_password(ac->msg, 128, 255);
338 if (newpass == NULL) {
339 return ldb_operr(ldb);
342 if (!convert_string_talloc(ac,
344 newpass, strlen(newpass),
345 (void *)&newpass_utf16.data,
346 &newpass_utf16.length)) {
347 ldb_asprintf_errstring(ldb,
349 "failed to generate UTF16 password from random password");
350 return LDB_ERR_OPERATIONS_ERROR;
352 ret = ldb_msg_add_steal_value(ac->msg, "clearTextPassword", &newpass_utf16);
353 if (ret != LDB_SUCCESS) {
354 return ldb_operr(ldb);
357 return samldb_next_step(ac);
360 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
362 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
363 struct ldb_result *res;
364 const char * const no_attrs[] = { NULL };
369 ret = dsdb_module_search(ac->module, ac, &res,
370 ac->dn, LDB_SCOPE_BASE, no_attrs,
371 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT
372 | DSDB_FLAG_NEXT_MODULE,
374 "(objectClass=classSchema)");
375 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
376 /* Don't be pricky when the DN doesn't exist if we have the */
377 /* RELAX control specified */
378 if (ldb_request_get_control(ac->req,
379 LDB_CONTROL_RELAX_OID) == NULL) {
380 ldb_set_errstring(ldb,
381 "samldb_find_defaultObjectCategory: "
382 "Invalid DN for 'defaultObjectCategory'!");
383 return LDB_ERR_CONSTRAINT_VIOLATION;
386 if ((ret != LDB_ERR_NO_SUCH_OBJECT) && (ret != LDB_SUCCESS)) {
390 if (ret == LDB_SUCCESS) {
391 /* ensure the defaultObjectCategory has a full GUID */
392 struct ldb_message *m;
393 m = ldb_msg_new(ac->msg);
398 if (ldb_msg_add_string(m, "defaultObjectCategory",
399 ldb_dn_get_extended_linearized(m, res->msgs[0]->dn, 1)) !=
403 m->elements[0].flags = LDB_FLAG_MOD_REPLACE;
405 ret = dsdb_module_modify(ac->module, m,
406 DSDB_FLAG_NEXT_MODULE,
408 if (ret != LDB_SUCCESS) {
416 return samldb_next_step(ac);
420 * msDS-IntId attributeSchema attribute handling
421 * during LDB_ADD request processing
423 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
428 int32_t system_flags;
429 struct ldb_context *ldb;
430 struct ldb_result *ldb_res;
431 struct ldb_dn *schema_dn;
432 struct samldb_msds_intid_persistant *msds_intid_struct;
433 struct dsdb_schema *schema;
435 ldb = ldb_module_get_ctx(ac->module);
436 schema_dn = ldb_get_schema_basedn(ldb);
438 /* replicated update should always go through */
439 if (ldb_request_get_control(ac->req,
440 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
444 /* msDS-IntId is handled by system and should never be
445 * passed by clients */
446 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
447 return LDB_ERR_UNWILLING_TO_PERFORM;
450 /* do not generate msDS-IntId if Relax control is passed */
451 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
455 /* check Functional Level */
456 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
460 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
461 system_flags = ldb_msg_find_attr_as_int(ac->msg, "systemFlags", 0);
462 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
465 schema = dsdb_get_schema(ldb, NULL);
467 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
468 "samldb_schema_info_update: no dsdb_schema loaded");
469 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
470 return ldb_operr(ldb);
473 msds_intid_struct = (struct samldb_msds_intid_persistant*) ldb_get_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE);
474 if (!msds_intid_struct) {
475 msds_intid_struct = talloc(ldb, struct samldb_msds_intid_persistant);
476 /* Generate new value for msDs-IntId
477 * Value should be in 0x80000000..0xBFFFFFFF range */
478 msds_intid = generate_random() % 0X3FFFFFFF;
479 msds_intid += 0x80000000;
480 msds_intid_struct->msds_intid = msds_intid;
481 msds_intid_struct->usn = schema->loaded_usn;
482 DEBUG(2, ("No samldb_msds_intid_persistant struct, allocating a new one\n"));
484 msds_intid = msds_intid_struct->msds_intid;
487 /* probe id values until unique one is found */
489 uint64_t current_usn;
491 if (msds_intid > 0xBFFFFFFF) {
492 msds_intid = 0x80000001;
495 * Alternative strategy to a costly (even indexed search) to the
497 * We search in the schema if we have already this intid (using dsdb_attribute_by_attributeID_id because
498 * in the range 0x80000000 0xBFFFFFFFF, attributeID is a DSDB_ATTID_TYPE_INTID).
499 * If so generate another random value.
500 * If not check if the highest USN in the database for the schema partition is the
502 * If so it means that's only this ldb context that is touching the schema in the database.
503 * If not it means that's someone else has modified the database while we are doing our changes too
504 * (this case should be very bery rare) in order to be sure do the search in the database.
506 if (dsdb_attribute_by_attributeID_id(schema, msds_intid)) {
507 msds_intid = generate_random() % 0X3FFFFFFF;
508 msds_intid += 0x80000000;
512 ret = dsdb_module_load_partition_usn(ac->module, schema->base_dn, ¤t_usn, NULL, NULL);
513 if (ret != LDB_SUCCESS) {
514 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
515 __location__": Searching for schema USN failed: %s\n",
517 return ldb_operr(ldb);
520 /* current_usn can be lesser than msds_intid_struct-> if there is
521 * uncommited changes.
523 if (current_usn > msds_intid_struct->usn) {
524 /* oups something has changed, someone/something
525 * else is modifying or has modified the schema
526 * we'd better check this intid is the database directly
529 DEBUG(2, ("Schema has changed, searching the database for the unicity of %d\n",
532 ret = dsdb_module_search(ac->module, ac,
534 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
535 DSDB_FLAG_NEXT_MODULE,
537 "(msDS-IntId=%d)", msds_intid);
538 if (ret != LDB_SUCCESS) {
539 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
540 __location__": Searching for msDS-IntId=%d failed - %s\n",
543 return ldb_operr(ldb);
545 id_exists = (ldb_res->count > 0);
546 talloc_free(ldb_res);
552 msds_intid_struct->msds_intid = msds_intid;
553 ldb_set_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE, msds_intid_struct);
555 return samdb_msg_add_int(ldb, ac->msg, ac->msg, "msDS-IntId",
561 * samldb_add_entry (async)
564 static int samldb_add_entry_callback(struct ldb_request *req,
565 struct ldb_reply *ares)
567 struct ldb_context *ldb;
568 struct samldb_ctx *ac;
571 ac = talloc_get_type(req->context, struct samldb_ctx);
572 ldb = ldb_module_get_ctx(ac->module);
575 return ldb_module_done(ac->req, NULL, NULL,
576 LDB_ERR_OPERATIONS_ERROR);
579 if (ares->type == LDB_REPLY_REFERRAL) {
580 return ldb_module_send_referral(ac->req, ares->referral);
583 if (ares->error != LDB_SUCCESS) {
584 return ldb_module_done(ac->req, ares->controls,
585 ares->response, ares->error);
587 if (ares->type != LDB_REPLY_DONE) {
588 ldb_asprintf_errstring(ldb, "Invalid LDB reply type %d", ares->type);
589 return ldb_module_done(ac->req, NULL, NULL,
590 LDB_ERR_OPERATIONS_ERROR);
593 /* The caller may wish to get controls back from the add */
594 ac->ares = talloc_steal(ac, ares);
596 ret = samldb_next_step(ac);
597 if (ret != LDB_SUCCESS) {
598 return ldb_module_done(ac->req, NULL, NULL, ret);
603 static int samldb_add_entry(struct samldb_ctx *ac)
605 struct ldb_context *ldb;
606 struct ldb_request *req;
609 ldb = ldb_module_get_ctx(ac->module);
611 ret = ldb_build_add_req(&req, ldb, ac,
614 ac, samldb_add_entry_callback,
616 LDB_REQ_SET_LOCATION(req);
617 if (ret != LDB_SUCCESS) {
621 return ldb_next_request(ac->module, req);
625 * return true if msg carries an attributeSchema that is intended to be RODC
626 * filtered but is also a system-critical attribute.
628 static bool check_rodc_critical_attribute(struct ldb_message *msg)
630 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
632 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
633 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
634 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE
635 | SEARCH_FLAG_CONFIDENTIAL);
637 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
638 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
646 static int samldb_fill_object(struct samldb_ctx *ac)
648 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
651 /* Add information for the different account types */
653 case SAMLDB_TYPE_USER: {
654 struct ldb_control *rodc_control = ldb_request_get_control(ac->req,
655 LDB_CONTROL_RODC_DCPROMO_OID);
656 if (rodc_control != NULL) {
657 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
658 rodc_control->critical = false;
659 ret = samldb_add_step(ac, samldb_rodc_add);
660 if (ret != LDB_SUCCESS) return ret;
663 /* check if we have a valid sAMAccountName */
664 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
665 if (ret != LDB_SUCCESS) return ret;
667 ret = samldb_add_step(ac, samldb_add_entry);
668 if (ret != LDB_SUCCESS) return ret;
672 case SAMLDB_TYPE_GROUP: {
673 /* check if we have a valid sAMAccountName */
674 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
675 if (ret != LDB_SUCCESS) return ret;
677 ret = samldb_add_step(ac, samldb_add_entry);
678 if (ret != LDB_SUCCESS) return ret;
682 case SAMLDB_TYPE_CLASS: {
683 const struct ldb_val *rdn_value, *def_obj_cat_val;
684 unsigned int v = ldb_msg_find_attr_as_uint(ac->msg, "objectClassCategory", -2);
686 /* As discussed with Microsoft through dochelp in April 2012 this is the behavior of windows*/
687 if (!ldb_msg_find_element(ac->msg, "subClassOf")) {
688 ret = ldb_msg_add_string(ac->msg, "subClassOf", "top");
689 if (ret != LDB_SUCCESS) return ret;
692 ret = samdb_find_or_add_attribute(ldb, ac->msg,
694 if (ret != LDB_SUCCESS) return ret;
696 /* do not allow to mark an attributeSchema as RODC filtered if it
697 * is system-critical */
698 if (check_rodc_critical_attribute(ac->msg)) {
699 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
700 ldb_dn_get_linearized(ac->msg->dn));
701 return LDB_ERR_UNWILLING_TO_PERFORM;
704 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
705 if (rdn_value == NULL) {
706 return ldb_operr(ldb);
708 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
709 /* the RDN has prefix "CN" */
710 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
711 samdb_cn_to_lDAPDisplayName(ac->msg,
712 (const char *) rdn_value->data));
713 if (ret != LDB_SUCCESS) {
719 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
722 guid = GUID_random();
723 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
724 if (ret != LDB_SUCCESS) {
730 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
731 "defaultObjectCategory");
732 if (def_obj_cat_val != NULL) {
733 /* "defaultObjectCategory" has been set by the caller.
734 * Do some checks for consistency.
735 * NOTE: The real constraint check (that
736 * 'defaultObjectCategory' is the DN of the new
737 * objectclass or any parent of it) is still incomplete.
738 * For now we say that 'defaultObjectCategory' is valid
739 * if it exists and it is of objectclass "classSchema".
741 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
742 if (ac->dn == NULL) {
743 ldb_set_errstring(ldb,
744 "Invalid DN for 'defaultObjectCategory'!");
745 return LDB_ERR_CONSTRAINT_VIOLATION;
748 /* "defaultObjectCategory" has not been set by the
749 * caller. Use the entry DN for it. */
750 ac->dn = ac->msg->dn;
752 ret = ldb_msg_add_string(ac->msg, "defaultObjectCategory",
753 ldb_dn_alloc_linearized(ac->msg, ac->dn));
754 if (ret != LDB_SUCCESS) {
760 ret = samldb_add_step(ac, samldb_add_entry);
761 if (ret != LDB_SUCCESS) return ret;
763 /* Now perform the checks for the 'defaultObjectCategory'. The
764 * lookup DN was already saved in "ac->dn" */
765 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
766 if (ret != LDB_SUCCESS) return ret;
768 /* -2 is not a valid objectClassCategory so it means the attribute wasn't present */
770 /* Windows 2003 does this*/
771 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "objectClassCategory", 0);
772 if (ret != LDB_SUCCESS) {
779 case SAMLDB_TYPE_ATTRIBUTE: {
780 const struct ldb_val *rdn_value;
781 struct ldb_message_element *el;
782 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
783 if (rdn_value == NULL) {
784 return ldb_operr(ldb);
786 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
787 /* the RDN has prefix "CN" */
788 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
789 samdb_cn_to_lDAPDisplayName(ac->msg,
790 (const char *) rdn_value->data));
791 if (ret != LDB_SUCCESS) {
797 /* do not allow to mark an attributeSchema as RODC filtered if it
798 * is system-critical */
799 if (check_rodc_critical_attribute(ac->msg)) {
800 ldb_asprintf_errstring(ldb,
801 "samldb: refusing schema add of %s - cannot combine critical attribute with RODC filtering",
802 ldb_dn_get_linearized(ac->msg->dn));
803 return LDB_ERR_UNWILLING_TO_PERFORM;
806 ret = samdb_find_or_add_attribute(ldb, ac->msg,
807 "isSingleValued", "FALSE");
808 if (ret != LDB_SUCCESS) return ret;
810 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
813 guid = GUID_random();
814 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
815 if (ret != LDB_SUCCESS) {
821 el = ldb_msg_find_element(ac->msg, "attributeSyntax");
824 * No need to scream if there isn't as we have code later on
825 * that will take care of it.
827 const struct dsdb_syntax *syntax = find_syntax_map_by_ad_oid((const char *)el->values[0].data);
829 DEBUG(9, ("Can't find dsdb_syntax object for attributeSyntax %s\n",
830 (const char *)el->values[0].data));
832 unsigned int v = ldb_msg_find_attr_as_uint(ac->msg, "oMSyntax", 0);
833 const struct ldb_val *val = ldb_msg_find_ldb_val(ac->msg, "oMObjectClass");
836 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "oMSyntax", syntax->oMSyntax);
837 if (ret != LDB_SUCCESS) {
842 struct ldb_val val2 = ldb_val_dup(ldb, &syntax->oMObjectClass);
843 if (val2.length > 0) {
844 ret = ldb_msg_add_value(ac->msg, "oMObjectClass", &val2, NULL);
845 if (ret != LDB_SUCCESS) {
853 /* handle msDS-IntID attribute */
854 ret = samldb_add_handle_msDS_IntId(ac);
855 if (ret != LDB_SUCCESS) return ret;
857 ret = samldb_add_step(ac, samldb_add_entry);
858 if (ret != LDB_SUCCESS) return ret;
863 ldb_asprintf_errstring(ldb, "Invalid entry type!");
864 return LDB_ERR_OPERATIONS_ERROR;
868 return samldb_first_step(ac);
871 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
873 struct ldb_context *ldb;
874 const struct ldb_val *rdn_value;
878 ldb = ldb_module_get_ctx(ac->module);
880 sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
882 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
883 if (rdn_value == NULL) {
884 return ldb_operr(ldb);
886 sid = dom_sid_parse_talloc(ac->msg,
887 (const char *)rdn_value->data);
889 ldb_set_errstring(ldb,
890 "samldb: No valid SID found in ForeignSecurityPrincipal CN!");
891 return LDB_ERR_CONSTRAINT_VIOLATION;
893 if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
894 return ldb_operr(ldb);
898 /* finally proceed with adding the entry */
899 ret = samldb_add_step(ac, samldb_add_entry);
900 if (ret != LDB_SUCCESS) return ret;
902 return samldb_first_step(ac);
905 static int samldb_schema_info_update(struct samldb_ctx *ac)
908 struct ldb_context *ldb;
909 struct dsdb_schema *schema;
911 /* replicated update should always go through */
912 if (ldb_request_get_control(ac->req,
913 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
917 /* do not update schemaInfo during provisioning */
918 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
922 ldb = ldb_module_get_ctx(ac->module);
923 schema = dsdb_get_schema(ldb, NULL);
925 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
926 "samldb_schema_info_update: no dsdb_schema loaded");
927 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
928 return ldb_operr(ldb);
931 ret = dsdb_module_schema_info_update(ac->module, schema,
932 DSDB_FLAG_NEXT_MODULE|
935 if (ret != LDB_SUCCESS) {
936 ldb_asprintf_errstring(ldb,
937 "samldb_schema_info_update: dsdb_module_schema_info_update failed with %s",
945 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid);
948 * "Objectclass" trigger (MS-SAMR 3.1.1.8.1)
950 * Has to be invoked on "add" and "modify" operations on "user", "computer" and
952 * ac->msg contains the "add"/"modify" message
953 * ac->type contains the object type (main objectclass)
955 static int samldb_objectclass_trigger(struct samldb_ctx *ac)
957 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
958 void *skip_allocate_sids = ldb_get_opaque(ldb,
959 "skip_allocate_sids");
960 struct ldb_message_element *el, *el2;
964 /* make sure that "sAMAccountType" is not specified */
965 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
967 ldb_set_errstring(ldb,
968 "samldb: sAMAccountType must not be specified!");
969 return LDB_ERR_UNWILLING_TO_PERFORM;
972 /* Step 1: objectSid assignment */
974 /* Don't allow the objectSid to be changed. But beside the RELAX
975 * control we have also to guarantee that it can always be set with
976 * SYSTEM permissions. This is needed for the "samba3sam" backend. */
977 sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
978 if ((sid != NULL) && (!dsdb_module_am_system(ac->module)) &&
979 (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) == NULL)) {
980 ldb_set_errstring(ldb,
981 "samldb: objectSid must not be specified!");
982 return LDB_ERR_UNWILLING_TO_PERFORM;
985 /* but generate a new SID when we do have an add operations */
986 if ((sid == NULL) && (ac->req->operation == LDB_ADD) && !skip_allocate_sids) {
987 ret = samldb_add_step(ac, samldb_allocate_sid);
988 if (ret != LDB_SUCCESS) return ret;
992 case SAMLDB_TYPE_USER: {
993 bool uac_generated = false, uac_add_flags = false;
995 /* Step 1.2: Default values */
996 ret = samdb_find_or_add_attribute(ldb, ac->msg,
997 "accountExpires", "9223372036854775807");
998 if (ret != LDB_SUCCESS) return ret;
999 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1000 "badPasswordTime", "0");
1001 if (ret != LDB_SUCCESS) return ret;
1002 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1003 "badPwdCount", "0");
1004 if (ret != LDB_SUCCESS) return ret;
1005 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1007 if (ret != LDB_SUCCESS) return ret;
1008 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1009 "countryCode", "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,
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;
1024 /* On add operations we might need to generate a
1025 * "userAccountControl" (if it isn't specified). */
1026 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1027 if ((el == NULL) && (ac->req->operation == LDB_ADD)) {
1028 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
1029 "userAccountControl",
1031 if (ret != LDB_SUCCESS) {
1034 uac_generated = true;
1035 uac_add_flags = true;
1038 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1040 uint32_t user_account_control, account_type;
1042 /* Step 1.3: "userAccountControl" -> "sAMAccountType" mapping */
1043 user_account_control = ldb_msg_find_attr_as_uint(ac->msg,
1044 "userAccountControl",
1046 /* "userAccountControl" = 0 means "UF_NORMAL_ACCOUNT" */
1047 if (user_account_control == 0) {
1048 user_account_control = UF_NORMAL_ACCOUNT;
1049 uac_generated = true;
1052 /* Temporary duplicate accounts aren't allowed */
1053 if ((user_account_control & UF_TEMP_DUPLICATE_ACCOUNT) != 0) {
1054 return LDB_ERR_OTHER;
1057 /* Workstation and (read-only) DC objects do need objectclass "computer" */
1058 if ((samdb_find_attribute(ldb, ac->msg,
1059 "objectclass", "computer") == NULL) &&
1060 (user_account_control &
1061 (UF_SERVER_TRUST_ACCOUNT | UF_WORKSTATION_TRUST_ACCOUNT))) {
1062 ldb_set_errstring(ldb,
1063 "samldb: Requested account type does need objectclass 'computer'!");
1064 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1067 account_type = ds_uf2atype(user_account_control);
1068 if (account_type == 0) {
1069 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1070 return LDB_ERR_UNWILLING_TO_PERFORM;
1072 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1075 if (ret != LDB_SUCCESS) {
1078 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1079 el2->flags = LDB_FLAG_MOD_REPLACE;
1081 /* "isCriticalSystemObject" might be set */
1082 if (user_account_control &
1083 (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1084 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1086 if (ret != LDB_SUCCESS) {
1089 el2 = ldb_msg_find_element(ac->msg,
1090 "isCriticalSystemObject");
1091 el2->flags = LDB_FLAG_MOD_REPLACE;
1092 } else if (user_account_control & UF_WORKSTATION_TRUST_ACCOUNT) {
1093 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1095 if (ret != LDB_SUCCESS) {
1098 el2 = ldb_msg_find_element(ac->msg,
1099 "isCriticalSystemObject");
1100 el2->flags = LDB_FLAG_MOD_REPLACE;
1103 /* Step 1.4: "userAccountControl" -> "primaryGroupID" mapping */
1104 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1105 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1108 * Older AD deployments don't know about the
1111 if (rid == DOMAIN_RID_READONLY_DCS) {
1112 ret = samldb_prim_group_tester(ac, rid);
1113 if (ret != LDB_SUCCESS) {
1118 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1119 "primaryGroupID", rid);
1120 if (ret != LDB_SUCCESS) {
1123 el2 = ldb_msg_find_element(ac->msg,
1125 el2->flags = LDB_FLAG_MOD_REPLACE;
1128 /* Step 1.5: Add additional flags when needed */
1129 /* Obviously this is done when the "userAccountControl"
1130 * has been generated here (tested against Windows
1132 if (uac_generated) {
1133 if (uac_add_flags) {
1134 user_account_control |= UF_ACCOUNTDISABLE;
1135 user_account_control |= UF_PASSWD_NOTREQD;
1138 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
1139 "userAccountControl",
1140 user_account_control);
1141 if (ret != LDB_SUCCESS) {
1149 case SAMLDB_TYPE_GROUP: {
1150 const char *tempstr;
1152 /* Step 2.2: Default values */
1153 tempstr = talloc_asprintf(ac->msg, "%d",
1154 GTYPE_SECURITY_GLOBAL_GROUP);
1155 if (tempstr == NULL) return ldb_operr(ldb);
1156 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1157 "groupType", tempstr);
1158 if (ret != LDB_SUCCESS) return ret;
1160 /* Step 2.3: "groupType" -> "sAMAccountType" */
1161 el = ldb_msg_find_element(ac->msg, "groupType");
1163 uint32_t group_type, account_type;
1165 group_type = ldb_msg_find_attr_as_uint(ac->msg,
1168 /* The creation of builtin groups requires the
1170 if (group_type == GTYPE_SECURITY_BUILTIN_LOCAL_GROUP) {
1171 if (ldb_request_get_control(ac->req,
1172 LDB_CONTROL_RELAX_OID) == NULL) {
1173 return LDB_ERR_UNWILLING_TO_PERFORM;
1177 account_type = ds_gtype2atype(group_type);
1178 if (account_type == 0) {
1179 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1180 return LDB_ERR_UNWILLING_TO_PERFORM;
1182 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1185 if (ret != LDB_SUCCESS) {
1188 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1189 el2->flags = LDB_FLAG_MOD_REPLACE;
1195 ldb_asprintf_errstring(ldb,
1196 "Invalid entry type!");
1197 return LDB_ERR_OPERATIONS_ERROR;
1205 * "Primary group ID" trigger (MS-SAMR 3.1.1.8.2)
1207 * Has to be invoked on "add" and "modify" operations on "user" and "computer"
1209 * ac->msg contains the "add"/"modify" message
1212 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid)
1214 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1215 struct dom_sid *sid;
1216 struct ldb_result *res;
1218 const char * const noattrs[] = { NULL };
1220 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1222 return ldb_operr(ldb);
1225 ret = dsdb_module_search(ac->module, ac, &res,
1226 ldb_get_default_basedn(ldb),
1228 noattrs, DSDB_FLAG_NEXT_MODULE,
1231 ldap_encode_ndr_dom_sid(ac, sid));
1232 if (ret != LDB_SUCCESS) {
1235 if (res->count != 1) {
1237 ldb_asprintf_errstring(ldb,
1238 "Failed to find primary group with RID %u!",
1240 return LDB_ERR_UNWILLING_TO_PERFORM;
1247 static int samldb_prim_group_set(struct samldb_ctx *ac)
1249 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1252 rid = ldb_msg_find_attr_as_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
1253 if (rid == (uint32_t) -1) {
1254 /* we aren't affected of any primary group set */
1257 } else if (!ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
1258 ldb_set_errstring(ldb,
1259 "The primary group isn't settable on add operations!");
1260 return LDB_ERR_UNWILLING_TO_PERFORM;
1263 return samldb_prim_group_tester(ac, rid);
1266 static int samldb_prim_group_change(struct samldb_ctx *ac)
1268 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1269 const char * const attrs[] = { "primaryGroupID", "memberOf", NULL };
1270 struct ldb_result *res, *group_res;
1271 struct ldb_message_element *el;
1272 struct ldb_message *msg;
1273 uint32_t prev_rid, new_rid;
1274 struct dom_sid *prev_sid, *new_sid;
1275 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
1277 const char * const noattrs[] = { NULL };
1279 el = dsdb_get_single_valued_attr(ac->msg, "primaryGroupID",
1280 ac->req->operation);
1282 /* we are not affected */
1286 /* Fetch information from the existing object */
1288 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1289 DSDB_FLAG_NEXT_MODULE, ac->req);
1290 if (ret != LDB_SUCCESS) {
1294 /* Finds out the DN of the old primary group */
1296 prev_rid = ldb_msg_find_attr_as_uint(res->msgs[0], "primaryGroupID",
1298 if (prev_rid == (uint32_t) -1) {
1299 /* User objects do always have a mandatory "primaryGroupID"
1300 * attribute. If this doesn't exist then the object is of the
1301 * wrong type. This is the exact Windows error code */
1302 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1305 prev_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), prev_rid);
1306 if (prev_sid == NULL) {
1307 return ldb_operr(ldb);
1310 /* Finds out the DN of the new primary group
1311 * Notice: in order to parse the primary group ID correctly we create
1312 * a temporary message here. */
1314 msg = ldb_msg_new(ac->msg);
1316 return ldb_module_oom(ac->module);
1318 ret = ldb_msg_add(msg, el, 0);
1319 if (ret != LDB_SUCCESS) {
1322 new_rid = ldb_msg_find_attr_as_uint(msg, "primaryGroupID", (uint32_t) -1);
1324 if (new_rid == (uint32_t) -1) {
1325 /* we aren't affected of any primary group change */
1329 if (prev_rid == new_rid) {
1333 ret = dsdb_module_search(ac->module, ac, &group_res,
1334 ldb_get_default_basedn(ldb),
1336 noattrs, DSDB_FLAG_NEXT_MODULE,
1339 ldap_encode_ndr_dom_sid(ac, prev_sid));
1340 if (ret != LDB_SUCCESS) {
1343 if (group_res->count != 1) {
1344 return ldb_operr(ldb);
1346 prev_prim_group_dn = group_res->msgs[0]->dn;
1348 new_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), new_rid);
1349 if (new_sid == NULL) {
1350 return ldb_operr(ldb);
1353 ret = dsdb_module_search(ac->module, ac, &group_res,
1354 ldb_get_default_basedn(ldb),
1356 noattrs, DSDB_FLAG_NEXT_MODULE,
1359 ldap_encode_ndr_dom_sid(ac, new_sid));
1360 if (ret != LDB_SUCCESS) {
1363 if (group_res->count != 1) {
1364 /* Here we know if the specified new primary group candidate is
1366 return LDB_ERR_UNWILLING_TO_PERFORM;
1368 new_prim_group_dn = group_res->msgs[0]->dn;
1370 /* We need to be already a normal member of the new primary
1371 * group in order to be successful. */
1372 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
1373 ldb_dn_get_linearized(new_prim_group_dn));
1375 return LDB_ERR_UNWILLING_TO_PERFORM;
1378 /* Remove the "member" attribute on the new primary group */
1379 msg = ldb_msg_new(ac->msg);
1381 return ldb_module_oom(ac->module);
1383 msg->dn = new_prim_group_dn;
1385 ret = samdb_msg_add_delval(ldb, msg, msg, "member",
1386 ldb_dn_get_linearized(ac->msg->dn));
1387 if (ret != LDB_SUCCESS) {
1391 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1392 if (ret != LDB_SUCCESS) {
1397 /* Add a "member" attribute for the previous primary group */
1398 msg = ldb_msg_new(ac->msg);
1400 return ldb_module_oom(ac->module);
1402 msg->dn = prev_prim_group_dn;
1404 ret = samdb_msg_add_addval(ldb, msg, msg, "member",
1405 ldb_dn_get_linearized(ac->msg->dn));
1406 if (ret != LDB_SUCCESS) {
1410 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1411 if (ret != LDB_SUCCESS) {
1419 static int samldb_prim_group_trigger(struct samldb_ctx *ac)
1423 if (ac->req->operation == LDB_ADD) {
1424 ret = samldb_prim_group_set(ac);
1426 ret = samldb_prim_group_change(ac);
1434 * This function is called on LDB modify operations. It performs some additions/
1435 * replaces on the current LDB message when "userAccountControl" changes.
1437 static int samldb_user_account_control_change(struct samldb_ctx *ac)
1439 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1440 uint32_t user_account_control, old_user_account_control, account_type;
1441 struct ldb_message_element *el;
1442 struct ldb_message *tmp_msg;
1444 struct ldb_result *res;
1445 const char * const attrs[] = { "userAccountControl", "objectClass", NULL };
1447 bool is_computer = false;
1449 el = dsdb_get_single_valued_attr(ac->msg, "userAccountControl",
1450 ac->req->operation);
1452 /* we are not affected */
1456 /* Create a temporary message for fetching the "userAccountControl" */
1457 tmp_msg = ldb_msg_new(ac->msg);
1458 if (tmp_msg == NULL) {
1459 return ldb_module_oom(ac->module);
1461 ret = ldb_msg_add(tmp_msg, el, 0);
1462 if (ret != LDB_SUCCESS) {
1465 user_account_control = ldb_msg_find_attr_as_uint(tmp_msg,
1466 "userAccountControl",
1468 talloc_free(tmp_msg);
1470 /* Temporary duplicate accounts aren't allowed */
1471 if ((user_account_control & UF_TEMP_DUPLICATE_ACCOUNT) != 0) {
1472 return LDB_ERR_OTHER;
1475 /* Fetch the old "userAccountControl" and "objectClass" */
1476 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1477 DSDB_FLAG_NEXT_MODULE, ac->req);
1478 if (ret != LDB_SUCCESS) {
1481 old_user_account_control = ldb_msg_find_attr_as_uint(res->msgs[0], "userAccountControl", 0);
1482 if (old_user_account_control == 0) {
1483 return ldb_operr(ldb);
1485 el = ldb_msg_find_element(res->msgs[0], "objectClass");
1487 return ldb_operr(ldb);
1490 /* When we do not have objectclass "computer" we cannot switch to a (read-only) DC */
1491 for (i = 0; i < el->num_values; i++) {
1492 if (ldb_attr_cmp((char *)el->values[i].data, "computer") == 0) {
1498 (user_account_control & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT))) {
1499 ldb_set_errstring(ldb,
1500 "samldb: Requested account type does need objectclass 'computer'!");
1501 return LDB_ERR_UNWILLING_TO_PERFORM;
1505 * The functions "ds_uf2atype" and "ds_uf2prim_group_rid" are used as
1506 * detectors for account type changes.
1507 * So if the account type does change then we need to adjust the
1508 * "sAMAccountType", the "isCriticalSystemObject" and the
1509 * "primaryGroupID" attribute.
1511 if ((ds_uf2atype(user_account_control)
1512 == ds_uf2atype(old_user_account_control)) &&
1513 (ds_uf2prim_group_rid(user_account_control)
1514 == ds_uf2prim_group_rid(old_user_account_control))) {
1518 account_type = ds_uf2atype(user_account_control);
1519 if (account_type == 0) {
1523 * When there is no account type embedded in "userAccountControl"
1524 * fall back to default "UF_NORMAL_ACCOUNT".
1526 if (user_account_control == 0) {
1527 ldb_set_errstring(ldb,
1528 "samldb: Invalid user account control value!");
1529 return LDB_ERR_UNWILLING_TO_PERFORM;
1532 user_account_control |= UF_NORMAL_ACCOUNT;
1534 tempstr = talloc_asprintf(ac->msg, "%d", user_account_control);
1535 if (tempstr == NULL) {
1536 return ldb_module_oom(ac->module);
1539 /* Overwrite "userAccountControl" with "UF_NORMAL_ACCOUNT" added */
1540 el = dsdb_get_single_valued_attr(ac->msg, "userAccountControl",
1541 ac->req->operation);
1542 el->values[0].data = (uint8_t *) tempstr;
1543 el->values[0].length = strlen(tempstr);
1545 account_type = ATYPE_NORMAL_ACCOUNT;
1547 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "sAMAccountType",
1549 if (ret != LDB_SUCCESS) {
1552 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
1553 el->flags = LDB_FLAG_MOD_REPLACE;
1555 /* "isCriticalSystemObject" might be set/changed */
1556 if (user_account_control
1557 & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1558 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1560 if (ret != LDB_SUCCESS) {
1563 el = ldb_msg_find_element(ac->msg,
1564 "isCriticalSystemObject");
1565 el->flags = LDB_FLAG_MOD_REPLACE;
1566 } else if (user_account_control & UF_WORKSTATION_TRUST_ACCOUNT) {
1567 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1569 if (ret != LDB_SUCCESS) {
1572 el = ldb_msg_find_element(ac->msg,
1573 "isCriticalSystemObject");
1574 el->flags = LDB_FLAG_MOD_REPLACE;
1577 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1578 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1580 /* Older AD deployments don't know about the RODC group */
1581 if (rid == DOMAIN_RID_READONLY_DCS) {
1582 ret = samldb_prim_group_tester(ac, rid);
1583 if (ret != LDB_SUCCESS) {
1588 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1589 "primaryGroupID", rid);
1590 if (ret != LDB_SUCCESS) {
1593 el = ldb_msg_find_element(ac->msg,
1595 el->flags = LDB_FLAG_MOD_REPLACE;
1601 static int samldb_group_type_change(struct samldb_ctx *ac)
1603 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1604 uint32_t group_type, old_group_type, account_type;
1605 struct ldb_message_element *el;
1606 struct ldb_message *tmp_msg;
1608 struct ldb_result *res;
1609 const char * const attrs[] = { "groupType", NULL };
1611 el = dsdb_get_single_valued_attr(ac->msg, "groupType",
1612 ac->req->operation);
1614 /* we are not affected */
1618 /* Create a temporary message for fetching the "groupType" */
1619 tmp_msg = ldb_msg_new(ac->msg);
1620 if (tmp_msg == NULL) {
1621 return ldb_module_oom(ac->module);
1623 ret = ldb_msg_add(tmp_msg, el, 0);
1624 if (ret != LDB_SUCCESS) {
1627 group_type = ldb_msg_find_attr_as_uint(tmp_msg, "groupType", 0);
1628 talloc_free(tmp_msg);
1630 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1631 DSDB_FLAG_NEXT_MODULE |
1632 DSDB_SEARCH_SHOW_DELETED, ac->req);
1633 if (ret != LDB_SUCCESS) {
1636 old_group_type = ldb_msg_find_attr_as_uint(res->msgs[0], "groupType", 0);
1637 if (old_group_type == 0) {
1638 return ldb_operr(ldb);
1641 /* Group type switching isn't so easy as it seems: We can only
1642 * change in this directions: global <-> universal <-> local
1643 * On each step also the group type itself
1644 * (security/distribution) is variable. */
1646 if (ldb_request_get_control(ac->req, LDB_CONTROL_PROVISION_OID) == NULL) {
1647 switch (group_type) {
1648 case GTYPE_SECURITY_GLOBAL_GROUP:
1649 case GTYPE_DISTRIBUTION_GLOBAL_GROUP:
1650 /* change to "universal" allowed */
1651 if ((old_group_type == GTYPE_SECURITY_DOMAIN_LOCAL_GROUP) ||
1652 (old_group_type == GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP)) {
1653 ldb_set_errstring(ldb,
1654 "samldb: Change from security/distribution local group forbidden!");
1655 return LDB_ERR_UNWILLING_TO_PERFORM;
1659 case GTYPE_SECURITY_UNIVERSAL_GROUP:
1660 case GTYPE_DISTRIBUTION_UNIVERSAL_GROUP:
1661 /* each change allowed */
1663 case GTYPE_SECURITY_DOMAIN_LOCAL_GROUP:
1664 case GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP:
1665 /* change to "universal" allowed */
1666 if ((old_group_type == GTYPE_SECURITY_GLOBAL_GROUP) ||
1667 (old_group_type == GTYPE_DISTRIBUTION_GLOBAL_GROUP)) {
1668 ldb_set_errstring(ldb,
1669 "samldb: Change from security/distribution global group forbidden!");
1670 return LDB_ERR_UNWILLING_TO_PERFORM;
1674 case GTYPE_SECURITY_BUILTIN_LOCAL_GROUP:
1676 /* we don't allow this "groupType" values */
1677 return LDB_ERR_UNWILLING_TO_PERFORM;
1682 account_type = ds_gtype2atype(group_type);
1683 if (account_type == 0) {
1684 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1685 return LDB_ERR_UNWILLING_TO_PERFORM;
1687 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "sAMAccountType",
1689 if (ret != LDB_SUCCESS) {
1692 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
1693 el->flags = LDB_FLAG_MOD_REPLACE;
1698 static int samldb_sam_accountname_check(struct samldb_ctx *ac)
1700 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1701 const char * const no_attrs[] = { NULL };
1702 struct ldb_result *res;
1703 const char *sam_accountname, *enc_str;
1704 struct ldb_message_element *el;
1705 struct ldb_message *tmp_msg;
1708 el = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
1709 ac->req->operation);
1711 /* we are not affected */
1715 /* Create a temporary message for fetching the "sAMAccountName" */
1716 tmp_msg = ldb_msg_new(ac->msg);
1717 if (tmp_msg == NULL) {
1718 return ldb_module_oom(ac->module);
1720 ret = ldb_msg_add(tmp_msg, el, 0);
1721 if (ret != LDB_SUCCESS) {
1725 /* We must not steal the original string, it belongs to the caller! */
1726 sam_accountname = talloc_strdup(ac,
1727 ldb_msg_find_attr_as_string(tmp_msg, "sAMAccountName", NULL));
1728 talloc_free(tmp_msg);
1730 if (sam_accountname == NULL) {
1731 /* The "sAMAccountName" cannot be nothing */
1732 ldb_set_errstring(ldb,
1733 "samldb: Empty account names aren't allowed!");
1734 return LDB_ERR_UNWILLING_TO_PERFORM;
1737 enc_str = ldb_binary_encode_string(ac, sam_accountname);
1738 if (enc_str == NULL) {
1739 return ldb_module_oom(ac->module);
1742 /* Make sure that a "sAMAccountName" is only used once */
1744 ret = dsdb_module_search(ac->module, ac, &res,
1745 ldb_get_default_basedn(ldb),
1746 LDB_SCOPE_SUBTREE, no_attrs,
1747 DSDB_FLAG_NEXT_MODULE, ac->req,
1748 "(sAMAccountName=%s)", enc_str);
1749 if (ret != LDB_SUCCESS) {
1752 if (res->count > 1) {
1753 return ldb_operr(ldb);
1754 } else if (res->count == 1) {
1755 if (ldb_dn_compare(res->msgs[0]->dn, ac->msg->dn) != 0) {
1756 ldb_asprintf_errstring(ldb,
1757 "samldb: Account name (sAMAccountName) '%s' already in use!",
1759 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1767 static int samldb_member_check(struct samldb_ctx *ac)
1769 const char * const attrs[] = { "objectSid", NULL };
1770 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1771 struct ldb_message_element *el;
1772 struct ldb_dn *member_dn;
1773 struct dom_sid *sid;
1774 struct ldb_result *res;
1775 struct dom_sid *group_sid;
1779 /* Fetch information from the existing object */
1781 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1782 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req, NULL);
1783 if (ret != LDB_SUCCESS) {
1786 if (res->count != 1) {
1787 return ldb_operr(ldb);
1790 group_sid = samdb_result_dom_sid(res, res->msgs[0], "objectSid");
1791 if (group_sid == NULL) {
1792 return ldb_operr(ldb);
1795 /* We've to walk over all modification entries and consider the "member"
1797 for (i = 0; i < ac->msg->num_elements; i++) {
1798 if (ldb_attr_cmp(ac->msg->elements[i].name, "member") != 0) {
1802 el = &ac->msg->elements[i];
1803 for (j = 0; j < el->num_values; j++) {
1804 struct ldb_result *group_res;
1805 const char *group_attrs[] = { "primaryGroupID" , NULL };
1806 uint32_t prim_group_rid;
1808 if (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE) {
1809 /* Deletes will be handled in
1810 * repl_meta_data, and deletes not
1811 * matching a member will return
1812 * LDB_ERR_UNWILLING_TO_PERFORM
1817 member_dn = ldb_dn_from_ldb_val(ac, ldb,
1819 if (!ldb_dn_validate(member_dn)) {
1820 return ldb_operr(ldb);
1823 /* Denies to add "member"s to groups which are primary
1824 * ones for them - in this case return
1825 * ERR_ENTRY_ALREADY_EXISTS. */
1827 ret = dsdb_module_search_dn(ac->module, ac, &group_res,
1828 member_dn, group_attrs,
1829 DSDB_FLAG_NEXT_MODULE, ac->req);
1830 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
1831 /* member DN doesn't exist yet */
1834 if (ret != LDB_SUCCESS) {
1837 prim_group_rid = ldb_msg_find_attr_as_uint(group_res->msgs[0], "primaryGroupID", (uint32_t)-1);
1838 if (prim_group_rid == (uint32_t) -1) {
1839 /* the member hasn't to be a user account ->
1840 * therefore no check needed in this case. */
1844 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1847 return ldb_operr(ldb);
1850 if (dom_sid_equal(group_sid, sid)) {
1851 ldb_asprintf_errstring(ldb,
1852 "samldb: member %s already set via primaryGroupID %u",
1853 ldb_dn_get_linearized(member_dn), prim_group_rid);
1854 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1864 /* SAM objects have special rules regarding the "description" attribute on
1865 * modify operations. */
1866 static int samldb_description_check(struct samldb_ctx *ac, bool *modified)
1868 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1869 const char * const attrs[] = { "objectClass", "description", NULL };
1870 struct ldb_result *res;
1874 /* Fetch information from the existing object */
1875 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1876 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req,
1877 "(|(objectclass=user)(objectclass=group)(objectclass=samDomain)(objectclass=samServer))");
1878 if (ret != LDB_SUCCESS) {
1879 /* don't treat it specially ... let normal error codes
1880 happen from other places */
1881 ldb_reset_err_string(ldb);
1884 if (res->count == 0) {
1885 /* we didn't match the filter */
1890 /* We've to walk over all modification entries and consider the
1891 * "description" ones. */
1892 for (i = 0; i < ac->msg->num_elements; i++) {
1893 if (ldb_attr_cmp(ac->msg->elements[i].name, "description") == 0) {
1894 ac->msg->elements[i].flags |= LDB_FLAG_INTERNAL_FORCE_SINGLE_VALUE_CHECK;
1904 /* This trigger adapts the "servicePrincipalName" attributes if the
1905 * "dNSHostName" and/or "sAMAccountName" attribute change(s) */
1906 static int samldb_service_principal_names_change(struct samldb_ctx *ac)
1908 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1909 struct ldb_message_element *el = NULL, *el2 = NULL;
1910 struct ldb_message *msg;
1911 const char * const attrs[] = { "servicePrincipalName", NULL };
1912 struct ldb_result *res;
1913 const char *dns_hostname = NULL, *old_dns_hostname = NULL,
1914 *sam_accountname = NULL, *old_sam_accountname = NULL;
1918 el = dsdb_get_single_valued_attr(ac->msg, "dNSHostName",
1919 ac->req->operation);
1920 el2 = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
1921 ac->req->operation);
1922 if ((el == NULL) && (el2 == NULL)) {
1923 /* we are not affected */
1927 /* Create a temporary message for fetching the "dNSHostName" */
1929 const char *dns_attrs[] = { "dNSHostName", NULL };
1930 msg = ldb_msg_new(ac->msg);
1932 return ldb_module_oom(ac->module);
1934 ret = ldb_msg_add(msg, el, 0);
1935 if (ret != LDB_SUCCESS) {
1938 dns_hostname = talloc_strdup(ac,
1939 ldb_msg_find_attr_as_string(msg, "dNSHostName", NULL));
1940 if (dns_hostname == NULL) {
1941 return ldb_module_oom(ac->module);
1946 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn,
1947 dns_attrs, DSDB_FLAG_NEXT_MODULE, ac->req);
1948 if (ret == LDB_SUCCESS) {
1949 old_dns_hostname = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
1953 /* Create a temporary message for fetching the "sAMAccountName" */
1955 char *tempstr, *tempstr2;
1956 const char *acct_attrs[] = { "sAMAccountName", NULL };
1958 msg = ldb_msg_new(ac->msg);
1960 return ldb_module_oom(ac->module);
1962 ret = ldb_msg_add(msg, el2, 0);
1963 if (ret != LDB_SUCCESS) {
1966 tempstr = talloc_strdup(ac,
1967 ldb_msg_find_attr_as_string(msg, "sAMAccountName", NULL));
1970 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, acct_attrs,
1971 DSDB_FLAG_NEXT_MODULE, ac->req);
1972 if (ret == LDB_SUCCESS) {
1973 tempstr2 = talloc_strdup(ac,
1974 ldb_msg_find_attr_as_string(res->msgs[0],
1975 "sAMAccountName", NULL));
1979 /* The "sAMAccountName" needs some additional trimming: we need
1980 * to remove the trailing "$"s if they exist. */
1981 if ((tempstr != NULL) && (tempstr[0] != '\0') &&
1982 (tempstr[strlen(tempstr) - 1] == '$')) {
1983 tempstr[strlen(tempstr) - 1] = '\0';
1985 if ((tempstr2 != NULL) && (tempstr2[0] != '\0') &&
1986 (tempstr2[strlen(tempstr2) - 1] == '$')) {
1987 tempstr2[strlen(tempstr2) - 1] = '\0';
1989 sam_accountname = tempstr;
1990 old_sam_accountname = tempstr2;
1993 if (old_dns_hostname == NULL) {
1994 /* we cannot change when the old name is unknown */
1995 dns_hostname = NULL;
1997 if ((old_dns_hostname != NULL) && (dns_hostname != NULL) &&
1998 (strcasecmp_m(old_dns_hostname, dns_hostname) == 0)) {
1999 /* The "dNSHostName" didn't change */
2000 dns_hostname = NULL;
2003 if (old_sam_accountname == NULL) {
2004 /* we cannot change when the old name is unknown */
2005 sam_accountname = NULL;
2007 if ((old_sam_accountname != NULL) && (sam_accountname != NULL) &&
2008 (strcasecmp_m(old_sam_accountname, sam_accountname) == 0)) {
2009 /* The "sAMAccountName" didn't change */
2010 sam_accountname = NULL;
2013 if ((dns_hostname == NULL) && (sam_accountname == NULL)) {
2014 /* Well, there are information missing (old name(s)) or the
2015 * names didn't change. We've nothing to do and can exit here */
2019 /* Potential "servicePrincipalName" changes in the same request have to
2020 * be handled before the update (Windows behaviour). */
2021 el = ldb_msg_find_element(ac->msg, "servicePrincipalName");
2023 msg = ldb_msg_new(ac->msg);
2025 return ldb_module_oom(ac->module);
2027 msg->dn = ac->msg->dn;
2030 ret = ldb_msg_add(msg, el, el->flags);
2031 if (ret != LDB_SUCCESS) {
2035 ldb_msg_remove_element(ac->msg, el);
2037 el = ldb_msg_find_element(ac->msg,
2038 "servicePrincipalName");
2039 } while (el != NULL);
2041 ret = dsdb_module_modify(ac->module, msg,
2042 DSDB_FLAG_NEXT_MODULE, ac->req);
2043 if (ret != LDB_SUCCESS) {
2049 /* Fetch the "servicePrincipalName"s if any */
2050 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
2051 DSDB_FLAG_NEXT_MODULE, ac->req, NULL);
2052 if (ret != LDB_SUCCESS) {
2055 if ((res->count != 1) || (res->msgs[0]->num_elements > 1)) {
2056 return ldb_operr(ldb);
2059 if (res->msgs[0]->num_elements == 1) {
2061 * Yes, we do have "servicePrincipalName"s. First we update them
2062 * locally, that means we do always substitute the current
2063 * "dNSHostName" with the new one and/or "sAMAccountName"
2064 * without "$" with the new one and then we append the
2065 * modified "servicePrincipalName"s as a message element
2066 * replace to the modification request (Windows behaviour). We
2067 * need also to make sure that the values remain case-
2068 * insensitively unique.
2071 ret = ldb_msg_add_empty(ac->msg, "servicePrincipalName",
2072 LDB_FLAG_MOD_REPLACE, &el);
2073 if (ret != LDB_SUCCESS) {
2077 for (i = 0; i < res->msgs[0]->elements[0].num_values; i++) {
2078 char *old_str, *new_str, *pos;
2080 struct ldb_val *vals;
2084 res->msgs[0]->elements[0].values[i].data;
2086 new_str = talloc_strdup(ac->msg,
2087 strtok_r(old_str, "/", &pos));
2088 if (new_str == NULL) {
2089 return ldb_module_oom(ac->module);
2092 while ((tok = strtok_r(NULL, "/", &pos)) != NULL) {
2093 if ((dns_hostname != NULL) &&
2094 (strcasecmp_m(tok, old_dns_hostname) == 0)) {
2097 if ((sam_accountname != NULL) &&
2098 (strcasecmp_m(tok, old_sam_accountname) == 0)) {
2099 tok = sam_accountname;
2102 new_str = talloc_asprintf(ac->msg, "%s/%s",
2104 if (new_str == NULL) {
2105 return ldb_module_oom(ac->module);
2109 /* Uniqueness check */
2110 for (j = 0; (!found) && (j < el->num_values); j++) {
2111 if (strcasecmp_m((char *)el->values[j].data,
2121 * append the new "servicePrincipalName" -
2122 * code derived from ldb_msg_add_value().
2124 * Open coded to make it clear that we must
2125 * append to the MOD_REPLACE el created above.
2127 vals = talloc_realloc(ac->msg, el->values,
2129 el->num_values + 1);
2131 return ldb_module_oom(ac->module);
2134 el->values[el->num_values] = data_blob_string_const(new_str);
2144 /* This checks the "fSMORoleOwner" attributes */
2145 static int samldb_fsmo_role_owner_check(struct samldb_ctx *ac)
2147 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2148 const char * const no_attrs[] = { NULL };
2149 struct ldb_message_element *el;
2150 struct ldb_message *tmp_msg;
2151 struct ldb_dn *res_dn;
2152 struct ldb_result *res;
2155 el = dsdb_get_single_valued_attr(ac->msg, "fSMORoleOwner",
2156 ac->req->operation);
2158 /* we are not affected */
2162 /* Create a temporary message for fetching the "fSMORoleOwner" */
2163 tmp_msg = ldb_msg_new(ac->msg);
2164 if (tmp_msg == NULL) {
2165 return ldb_module_oom(ac->module);
2167 ret = ldb_msg_add(tmp_msg, el, 0);
2168 if (ret != LDB_SUCCESS) {
2171 res_dn = ldb_msg_find_attr_as_dn(ldb, ac, tmp_msg, "fSMORoleOwner");
2172 talloc_free(tmp_msg);
2174 if (res_dn == NULL) {
2175 ldb_set_errstring(ldb,
2176 "samldb: 'fSMORoleOwner' attributes have to reference 'nTDSDSA' entries!");
2177 if (ac->req->operation == LDB_ADD) {
2178 return LDB_ERR_CONSTRAINT_VIOLATION;
2180 return LDB_ERR_UNWILLING_TO_PERFORM;
2184 /* Fetched DN has to reference a "nTDSDSA" entry */
2185 ret = dsdb_module_search(ac->module, ac, &res, res_dn, LDB_SCOPE_BASE,
2187 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
2188 ac->req, "(objectClass=nTDSDSA)");
2189 if (ret != LDB_SUCCESS) {
2192 if (res->count != 1) {
2193 ldb_set_errstring(ldb,
2194 "samldb: 'fSMORoleOwner' attributes have to reference 'nTDSDSA' entries!");
2195 return LDB_ERR_UNWILLING_TO_PERFORM;
2205 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
2207 struct ldb_context *ldb;
2208 struct samldb_ctx *ac;
2209 struct ldb_message_element *el;
2212 ldb = ldb_module_get_ctx(module);
2213 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
2215 /* do not manipulate our control entries */
2216 if (ldb_dn_is_special(req->op.add.message->dn)) {
2217 return ldb_next_request(module, req);
2220 ac = samldb_ctx_init(module, req);
2222 return ldb_operr(ldb);
2225 /* build the new msg */
2226 ac->msg = ldb_msg_copy_shallow(ac, req->op.add.message);
2227 if (ac->msg == NULL) {
2229 ldb_debug(ldb, LDB_DEBUG_FATAL,
2230 "samldb_add: ldb_msg_copy_shallow failed!\n");
2231 return ldb_operr(ldb);
2234 el = ldb_msg_find_element(ac->msg, "fSMORoleOwner");
2236 ret = samldb_fsmo_role_owner_check(ac);
2237 if (ret != LDB_SUCCESS) {
2242 if (samdb_find_attribute(ldb, ac->msg,
2243 "objectclass", "user") != NULL) {
2244 ac->type = SAMLDB_TYPE_USER;
2246 ret = samldb_prim_group_trigger(ac);
2247 if (ret != LDB_SUCCESS) {
2251 ret = samldb_objectclass_trigger(ac);
2252 if (ret != LDB_SUCCESS) {
2256 return samldb_fill_object(ac);
2259 if (samdb_find_attribute(ldb, ac->msg,
2260 "objectclass", "group") != NULL) {
2261 ac->type = SAMLDB_TYPE_GROUP;
2263 ret = samldb_objectclass_trigger(ac);
2264 if (ret != LDB_SUCCESS) {
2268 return samldb_fill_object(ac);
2271 /* perhaps a foreignSecurityPrincipal? */
2272 if (samdb_find_attribute(ldb, ac->msg,
2274 "foreignSecurityPrincipal") != NULL) {
2275 return samldb_fill_foreignSecurityPrincipal_object(ac);
2278 if (samdb_find_attribute(ldb, ac->msg,
2279 "objectclass", "classSchema") != NULL) {
2280 ret = samldb_schema_info_update(ac);
2281 if (ret != LDB_SUCCESS) {
2286 ac->type = SAMLDB_TYPE_CLASS;
2287 return samldb_fill_object(ac);
2290 if (samdb_find_attribute(ldb, ac->msg,
2291 "objectclass", "attributeSchema") != NULL) {
2292 ret = samldb_schema_info_update(ac);
2293 if (ret != LDB_SUCCESS) {
2298 ac->type = SAMLDB_TYPE_ATTRIBUTE;
2299 return samldb_fill_object(ac);
2304 /* nothing matched, go on */
2305 return ldb_next_request(module, req);
2309 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
2311 struct ldb_context *ldb;
2312 struct samldb_ctx *ac;
2313 struct ldb_message_element *el, *el2;
2314 bool modified = false;
2317 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2318 /* do not manipulate our control entries */
2319 return ldb_next_request(module, req);
2322 ldb = ldb_module_get_ctx(module);
2324 /* make sure that "objectSid" is not specified */
2325 el = ldb_msg_find_element(req->op.mod.message, "objectSid");
2327 if (ldb_request_get_control(req, LDB_CONTROL_PROVISION_OID) == NULL) {
2328 ldb_set_errstring(ldb,
2329 "samldb: objectSid must not be specified!");
2330 return LDB_ERR_UNWILLING_TO_PERFORM;
2333 /* make sure that "sAMAccountType" is not specified */
2334 el = ldb_msg_find_element(req->op.mod.message, "sAMAccountType");
2336 ldb_set_errstring(ldb,
2337 "samldb: sAMAccountType must not be specified!");
2338 return LDB_ERR_UNWILLING_TO_PERFORM;
2340 /* make sure that "isCriticalSystemObject" is not specified */
2341 el = ldb_msg_find_element(req->op.mod.message, "isCriticalSystemObject");
2343 if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID) == NULL) {
2344 ldb_set_errstring(ldb,
2345 "samldb: isCriticalSystemObject must not be specified!");
2346 return LDB_ERR_UNWILLING_TO_PERFORM;
2350 /* msDS-IntId is not allowed to be modified
2351 * except when modification comes from replication */
2352 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
2353 if (!ldb_request_get_control(req,
2354 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
2355 return LDB_ERR_CONSTRAINT_VIOLATION;
2359 ac = samldb_ctx_init(module, req);
2361 return ldb_operr(ldb);
2364 /* build the new msg */
2365 ac->msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
2366 if (ac->msg == NULL) {
2368 ldb_debug(ldb, LDB_DEBUG_FATAL,
2369 "samldb_modify: ldb_msg_copy_shallow failed!\n");
2370 return ldb_operr(ldb);
2373 el = ldb_msg_find_element(ac->msg, "primaryGroupID");
2375 ret = samldb_prim_group_trigger(ac);
2376 if (ret != LDB_SUCCESS) {
2381 el = ldb_msg_find_element(ac->msg, "userAccountControl");
2384 ret = samldb_user_account_control_change(ac);
2385 if (ret != LDB_SUCCESS) {
2390 el = ldb_msg_find_element(ac->msg, "groupType");
2393 ret = samldb_group_type_change(ac);
2394 if (ret != LDB_SUCCESS) {
2399 el = ldb_msg_find_element(ac->msg, "sAMAccountName");
2401 ret = samldb_sam_accountname_check(ac);
2402 if (ret != LDB_SUCCESS) {
2407 el = ldb_msg_find_element(ac->msg, "member");
2409 ret = samldb_member_check(ac);
2410 if (ret != LDB_SUCCESS) {
2415 el = ldb_msg_find_element(ac->msg, "description");
2417 ret = samldb_description_check(ac, &modified);
2418 if (ret != LDB_SUCCESS) {
2423 el = ldb_msg_find_element(ac->msg, "dNSHostName");
2424 el2 = ldb_msg_find_element(ac->msg, "sAMAccountName");
2425 if ((el != NULL) || (el2 != NULL)) {
2427 ret = samldb_service_principal_names_change(ac);
2428 if (ret != LDB_SUCCESS) {
2433 el = ldb_msg_find_element(ac->msg, "fSMORoleOwner");
2435 ret = samldb_fsmo_role_owner_check(ac);
2436 if (ret != LDB_SUCCESS) {
2442 struct ldb_request *child_req;
2444 /* Now perform the real modifications as a child request */
2445 ret = ldb_build_mod_req(&child_req, ldb, ac,
2448 req, dsdb_next_callback,
2450 LDB_REQ_SET_LOCATION(child_req);
2451 if (ret != LDB_SUCCESS) {
2455 return ldb_next_request(module, child_req);
2460 /* no change which interests us, go on */
2461 return ldb_next_request(module, req);
2466 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
2468 struct ldb_context *ldb;
2469 struct dom_sid *sid;
2473 struct ldb_result *res;
2474 const char * const attrs[] = { "objectSid", "isDeleted", NULL };
2475 const char * const noattrs[] = { NULL };
2477 ldb = ldb_module_get_ctx(ac->module);
2479 /* Finds out the SID/RID of the SAM object */
2480 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->req->op.del.dn,
2482 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
2484 if (ret != LDB_SUCCESS) {
2488 if (ldb_msg_check_string_attribute(res->msgs[0], "isDeleted", "TRUE")) {
2492 sid = samdb_result_dom_sid(ac, res->msgs[0], "objectSid");
2494 /* No SID - it might not be a SAM object - therefore ok */
2497 status = dom_sid_split_rid(ac, sid, NULL, &rid);
2498 if (!NT_STATUS_IS_OK(status)) {
2499 return ldb_operr(ldb);
2502 /* Special object (security principal?) */
2506 /* Deny delete requests from groups which are primary ones */
2507 ret = dsdb_module_search(ac->module, ac, &res,
2508 ldb_get_default_basedn(ldb),
2509 LDB_SCOPE_SUBTREE, noattrs,
2510 DSDB_FLAG_NEXT_MODULE,
2512 "(&(primaryGroupID=%u)(objectClass=user))", rid);
2513 if (ret != LDB_SUCCESS) {
2516 if (res->count > 0) {
2517 return LDB_ERR_ENTRY_ALREADY_EXISTS;
2523 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
2525 struct samldb_ctx *ac;
2528 if (ldb_dn_is_special(req->op.del.dn)) {
2529 /* do not manipulate our control entries */
2530 return ldb_next_request(module, req);
2533 ac = samldb_ctx_init(module, req);
2535 return ldb_operr(ldb_module_get_ctx(module));
2538 ret = samldb_prim_group_users_check(ac);
2539 if (ret != LDB_SUCCESS) {
2545 return ldb_next_request(module, req);
2550 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
2552 struct ldb_context *ldb = ldb_module_get_ctx(module);
2553 struct dsdb_fsmo_extended_op *exop;
2556 exop = talloc_get_type(req->op.extended.data,
2557 struct dsdb_fsmo_extended_op);
2559 ldb_set_errstring(ldb,
2560 "samldb_extended_allocate_rid_pool: invalid extended data");
2561 return LDB_ERR_PROTOCOL_ERROR;
2564 ret = ridalloc_allocate_rid_pool_fsmo(module, exop, req);
2565 if (ret != LDB_SUCCESS) {
2569 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
2572 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
2574 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
2575 return samldb_extended_allocate_rid_pool(module, req);
2578 return ldb_next_request(module, req);
2582 static const struct ldb_module_ops ldb_samldb_module_ops = {
2585 .modify = samldb_modify,
2586 .del = samldb_delete,
2587 .extended = samldb_extended
2591 int ldb_samldb_module_init(const char *version)
2593 LDB_MODULE_CHECK_VERSION(version);
2594 return ldb_register_module(&ldb_samldb_module_ops);