4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
5 Copyright (C) Simo Sorce 2004-2008
6 Copyright (C) Matthias Dieter Wallnöfer 2009-2010
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 * Component: ldb samldb module
27 * Description: add embedded user/group creation functionality
33 #include "libcli/ldap/ldap_ndr.h"
34 #include "ldb_module.h"
35 #include "dsdb/samdb/samdb.h"
36 #include "dsdb/samdb/ldb_modules/util.h"
37 #include "libcli/security/security.h"
38 #include "librpc/gen_ndr/ndr_security.h"
39 #include "../lib/util/util_ldb.h"
41 #include "param/param.h"
45 typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
48 struct samldb_step *next;
53 struct ldb_module *module;
54 struct ldb_request *req;
56 /* used for add operations */
59 /* the resulting message */
60 struct ldb_message *msg;
62 /* holds the entry SID */
65 /* holds a generic dn */
68 /* used in conjunction with "sid" in "samldb_dn_from_sid" and
69 * "samldb_find_for_defaultObjectCategory" */
70 struct ldb_dn *res_dn;
72 /* all the async steps necessary to complete the operation */
73 struct samldb_step *steps;
74 struct samldb_step *curstep;
76 /* If someone set an ares to forward controls and response back to the caller */
77 struct ldb_reply *ares;
80 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
81 struct ldb_request *req)
83 struct ldb_context *ldb;
84 struct samldb_ctx *ac;
86 ldb = ldb_module_get_ctx(module);
88 ac = talloc_zero(req, struct samldb_ctx);
100 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
102 struct samldb_step *step, *stepper;
104 step = talloc_zero(ac, struct samldb_step);
106 return ldb_oom(ldb_module_get_ctx(ac->module));
111 if (ac->steps == NULL) {
115 if (ac->curstep == NULL)
116 return ldb_operr(ldb_module_get_ctx(ac->module));
117 for (stepper = ac->curstep; stepper->next != NULL;
118 stepper = stepper->next);
119 stepper->next = step;
125 static int samldb_first_step(struct samldb_ctx *ac)
127 if (ac->steps == NULL) {
128 return ldb_operr(ldb_module_get_ctx(ac->module));
131 ac->curstep = ac->steps;
132 return ac->curstep->fn(ac);
135 static int samldb_next_step(struct samldb_ctx *ac)
137 if (ac->curstep->next) {
138 ac->curstep = ac->curstep->next;
139 return ac->curstep->fn(ac);
142 /* we exit the samldb module here */
143 /* If someone set an ares to forward controls and response back to the caller, use them */
145 return ldb_module_done(ac->req, ac->ares->controls,
146 ac->ares->response, LDB_SUCCESS);
148 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
152 static int samldb_generate_samAccountName(struct ldb_context *ldb, struct ldb_message *msg)
156 /* Format: $000000-000000000000 */
158 name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
159 (unsigned int)generate_random(),
160 (unsigned int)generate_random(),
161 (unsigned int)generate_random());
165 return ldb_msg_add_steal_string(msg, "samAccountName", name);
169 * samldb_check_samAccountName (async)
172 static int samldb_check_samAccountName_callback(struct ldb_request *req,
173 struct ldb_reply *ares)
175 struct samldb_ctx *ac;
178 ac = talloc_get_type(req->context, struct samldb_ctx);
180 if (ares->error != LDB_SUCCESS) {
181 return ldb_module_done(ac->req, ares->controls,
182 ares->response, ares->error);
185 switch (ares->type) {
186 case LDB_REPLY_ENTRY:
187 /* if we get an entry it means this samAccountName
189 return ldb_module_done(ac->req, NULL, NULL,
190 LDB_ERR_ENTRY_ALREADY_EXISTS);
192 case LDB_REPLY_REFERRAL:
199 /* not found, go on */
201 ret = samldb_next_step(ac);
205 if (ret != LDB_SUCCESS) {
206 return ldb_module_done(ac->req, NULL, NULL, ret);
212 static int samldb_check_samAccountName(struct samldb_ctx *ac)
214 struct ldb_context *ldb;
215 struct ldb_request *req;
220 ldb = ldb_module_get_ctx(ac->module);
222 if (ldb_msg_find_element(ac->msg, "samAccountName") == NULL) {
223 ret = samldb_generate_samAccountName(ldb, ac->msg);
224 if (ret != LDB_SUCCESS) {
229 name = ldb_msg_find_attr_as_string(ac->msg, "samAccountName", NULL);
231 return ldb_operr(ldb);
233 filter = talloc_asprintf(ac, "samAccountName=%s",
234 ldb_binary_encode_string(ac, name));
235 if (filter == NULL) {
236 return ldb_operr(ldb);
239 ret = ldb_build_search_req(&req, ldb, ac,
240 ldb_get_default_basedn(ldb),
244 ac, samldb_check_samAccountName_callback,
247 if (ret != LDB_SUCCESS) {
250 return ldb_next_request(ac->module, req);
254 static int samldb_check_samAccountType(struct samldb_ctx *ac)
256 struct ldb_context *ldb;
257 unsigned int account_type;
258 unsigned int group_type;
262 ldb = ldb_module_get_ctx(ac->module);
264 /* make sure sAMAccountType is not specified */
265 if (ldb_msg_find_element(ac->msg, "sAMAccountType") != NULL) {
266 ldb_asprintf_errstring(ldb,
267 "sAMAccountType must not be specified!");
268 return LDB_ERR_UNWILLING_TO_PERFORM;
271 if (strcmp("user", ac->type) == 0) {
272 uac = samdb_result_uint(ac->msg, "userAccountControl", 0);
274 ldb_asprintf_errstring(ldb,
275 "userAccountControl invalid!");
276 return LDB_ERR_UNWILLING_TO_PERFORM;
278 account_type = ds_uf2atype(uac);
279 ret = samdb_msg_add_uint(ldb,
283 if (ret != LDB_SUCCESS) {
288 if (strcmp("group", ac->type) == 0) {
290 group_type = samdb_result_uint(ac->msg, "groupType", 0);
291 if (group_type == 0) {
292 ldb_asprintf_errstring(ldb,
293 "groupType invalid!\n");
294 return LDB_ERR_UNWILLING_TO_PERFORM;
296 account_type = ds_gtype2atype(group_type);
297 ret = samdb_msg_add_uint(ldb,
301 if (ret != LDB_SUCCESS) {
307 return samldb_next_step(ac);
310 static bool samldb_msg_add_sid(struct ldb_message *msg,
312 const struct dom_sid *sid)
315 enum ndr_err_code ndr_err;
317 ndr_err = ndr_push_struct_blob(&v, msg, sid,
318 (ndr_push_flags_fn_t)ndr_push_dom_sid);
319 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
322 return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
326 /* allocate a SID using our RID Set */
327 static int samldb_allocate_sid(struct samldb_ctx *ac)
331 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
333 ret = ridalloc_allocate_rid(ac->module, &rid);
334 if (ret != LDB_SUCCESS) {
338 ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
339 if (ac->sid == NULL) {
340 return ldb_module_oom(ac->module);
343 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
344 return ldb_operr(ldb);
347 return samldb_next_step(ac);
351 see if a krbtgt_number is available
353 static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac, unsigned krbtgt_number)
355 TALLOC_CTX *tmp_ctx = talloc_new(ac);
356 struct ldb_result *res;
357 const char *attrs[] = { NULL };
360 ret = dsdb_module_search(ac->module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE,
361 attrs, DSDB_FLAG_NEXT_MODULE,
362 "msDC-SecondaryKrbTgtNumber=%u", krbtgt_number);
363 if (ret == LDB_SUCCESS && res->count == 0) {
364 talloc_free(tmp_ctx);
367 talloc_free(tmp_ctx);
371 /* special handling for add in RODC join */
372 static int samldb_rodc_add(struct samldb_ctx *ac)
374 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
375 unsigned krbtgt_number, i_start, i;
378 /* find a unused msDC-SecondaryKrbTgtNumber */
379 i_start = generate_random() & 0xFFFF;
384 for (i=i_start; i<=0xFFFF; i++) {
385 if (samldb_krbtgtnumber_available(ac, i)) {
390 for (i=1; i<i_start; i++) {
391 if (samldb_krbtgtnumber_available(ac, i)) {
397 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
398 "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
399 W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
400 return LDB_ERR_OTHER;
403 ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber", LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
404 if (ret != LDB_SUCCESS) {
405 return ldb_operr(ldb);
408 ret = ldb_msg_add_fmt(ac->msg, "msDS-SecondaryKrbTgtNumber", "%u", krbtgt_number);
409 if (ret != LDB_SUCCESS) {
410 return ldb_operr(ldb);
413 ret = ldb_msg_add_fmt(ac->msg, "samAccountName", "krbtgt_%u", krbtgt_number);
414 if (ret != LDB_SUCCESS) {
415 return ldb_operr(ldb);
418 return samldb_next_step(ac);
422 * samldb_dn_from_sid (async)
425 static int samldb_dn_from_sid(struct samldb_ctx *ac);
427 static int samldb_dn_from_sid_callback(struct ldb_request *req,
428 struct ldb_reply *ares)
430 struct ldb_context *ldb;
431 struct samldb_ctx *ac;
434 ac = talloc_get_type(req->context, struct samldb_ctx);
435 ldb = ldb_module_get_ctx(ac->module);
438 ret = LDB_ERR_OPERATIONS_ERROR;
441 if (ares->error != LDB_SUCCESS) {
442 return ldb_module_done(ac->req, ares->controls,
443 ares->response, ares->error);
446 switch (ares->type) {
447 case LDB_REPLY_ENTRY:
449 if (ac->res_dn != NULL) {
451 ldb_set_errstring(ldb,
452 "Invalid number of results while searching "
453 "for domain objects!");
454 ret = LDB_ERR_OPERATIONS_ERROR;
457 ac->res_dn = ldb_dn_copy(ac, ares->message->dn);
463 case LDB_REPLY_REFERRAL:
472 /* found or not found, go on */
473 ret = samldb_next_step(ac);
478 if (ret != LDB_SUCCESS) {
479 return ldb_module_done(ac->req, NULL, NULL, ret);
485 /* Finds the DN "res_dn" of an object with a given SID "sid" */
486 static int samldb_dn_from_sid(struct samldb_ctx *ac)
488 struct ldb_context *ldb;
489 static const char * const attrs[] = { NULL };
490 struct ldb_request *req;
494 ldb = ldb_module_get_ctx(ac->module);
497 return ldb_operr(ldb);
499 filter = talloc_asprintf(ac, "(objectSid=%s)",
500 ldap_encode_ndr_dom_sid(ac, ac->sid));
504 ret = ldb_build_search_req(&req, ldb, ac,
505 ldb_get_default_basedn(ldb),
509 ac, samldb_dn_from_sid_callback,
511 if (ret != LDB_SUCCESS)
514 return ldb_next_request(ac->module, req);
518 static int samldb_check_primaryGroupID_1(struct samldb_ctx *ac)
520 struct ldb_context *ldb;
523 ldb = ldb_module_get_ctx(ac->module);
525 rid = samdb_result_uint(ac->msg, "primaryGroupID", ~0);
526 ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
528 return ldb_operr(ldb);
531 return samldb_next_step(ac);
534 static int samldb_check_primaryGroupID_2(struct samldb_ctx *ac)
536 if (ac->res_dn == NULL) {
537 struct ldb_context *ldb;
538 ldb = ldb_module_get_ctx(ac->module);
539 ldb_asprintf_errstring(ldb,
540 "Failed to find group sid %s!",
541 dom_sid_string(ac->sid, ac->sid));
542 return LDB_ERR_UNWILLING_TO_PERFORM;
545 return samldb_next_step(ac);
550 * samldb_find_for_defaultObjectCategory (async)
553 static int samldb_find_for_defaultObjectCategory_callback(struct ldb_request *req,
554 struct ldb_reply *ares)
556 struct ldb_context *ldb;
557 struct samldb_ctx *ac;
560 ac = talloc_get_type(req->context, struct samldb_ctx);
561 ldb = ldb_module_get_ctx(ac->module);
564 ret = LDB_ERR_OPERATIONS_ERROR;
567 if (ares->error != LDB_SUCCESS) {
568 if (ares->error == LDB_ERR_NO_SUCH_OBJECT) {
569 if (ldb_request_get_control(ac->req,
570 LDB_CONTROL_RELAX_OID) != NULL) {
571 /* Don't be pricky when the DN doesn't exist */
572 /* if we have the RELAX control specified */
573 ac->res_dn = req->op.search.base;
574 return samldb_next_step(ac);
576 ldb_set_errstring(ldb,
577 "samldb_find_defaultObjectCategory: "
578 "Invalid DN for 'defaultObjectCategory'!");
579 ares->error = LDB_ERR_CONSTRAINT_VIOLATION;
583 return ldb_module_done(ac->req, ares->controls,
584 ares->response, ares->error);
587 switch (ares->type) {
588 case LDB_REPLY_ENTRY:
589 ac->res_dn = talloc_steal(ac, ares->message->dn);
594 case LDB_REPLY_REFERRAL:
603 if (ac->res_dn != NULL) {
604 /* when found go on */
605 ret = samldb_next_step(ac);
607 ret = LDB_ERR_OPERATIONS_ERROR;
613 if (ret != LDB_SUCCESS) {
614 return ldb_module_done(ac->req, NULL, NULL, ret);
620 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
622 struct ldb_context *ldb;
623 struct ldb_request *req;
624 static const char *no_attrs[] = { NULL };
627 ldb = ldb_module_get_ctx(ac->module);
631 ret = ldb_build_search_req(&req, ldb, ac,
632 ac->dn, LDB_SCOPE_BASE,
633 "(objectClass=classSchema)", no_attrs,
635 samldb_find_for_defaultObjectCategory_callback,
637 if (ret != LDB_SUCCESS) {
641 ret = dsdb_request_add_controls(req,
642 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT);
643 if (ret != LDB_SUCCESS) {
647 return ldb_next_request(ac->module, req);
651 * msDS-IntId attributeSchema attribute handling
652 * during LDB_ADD request processing
654 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
659 uint32_t system_flags;
660 struct ldb_context *ldb;
661 struct ldb_result *ldb_res;
662 struct ldb_dn *schema_dn;
664 ldb = ldb_module_get_ctx(ac->module);
665 schema_dn = ldb_get_schema_basedn(ldb);
667 /* replicated update should always go through */
668 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
672 /* msDS-IntId is handled by system and should never be
673 * passed by clients */
674 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
675 return LDB_ERR_UNWILLING_TO_PERFORM;
678 /* do not generate msDS-IntId if Relax control is passed */
679 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
683 /* check Functional Level */
684 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
688 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
689 system_flags = ldb_msg_find_attr_as_uint(ac->msg, "systemFlags", 0);
690 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
694 /* Generate new value for msDs-IntId
695 * Value should be in 0x80000000..0xBFFFFFFF range */
696 msds_intid = generate_random() % 0X3FFFFFFF;
697 msds_intid += 0x80000000;
699 /* probe id values until unique one is found */
702 if (msds_intid > 0xBFFFFFFF) {
703 msds_intid = 0x80000001;
706 ret = dsdb_module_search(ac->module, ac,
708 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
709 DSDB_FLAG_NEXT_MODULE,
710 "(msDS-IntId=%d)", msds_intid);
711 if (ret != LDB_SUCCESS) {
712 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
713 __location__": Searching for msDS-IntId=%d failed - %s\n",
716 return ldb_operr(ldb);
718 id_exists = (ldb_res->count > 0);
720 talloc_free(ldb_res);
723 return ldb_msg_add_fmt(ac->msg, "msDS-IntId", "%d", msds_intid);
728 * samldb_add_entry (async)
731 static int samldb_add_entry_callback(struct ldb_request *req,
732 struct ldb_reply *ares)
734 struct ldb_context *ldb;
735 struct samldb_ctx *ac;
738 ac = talloc_get_type(req->context, struct samldb_ctx);
739 ldb = ldb_module_get_ctx(ac->module);
742 return ldb_module_done(ac->req, NULL, NULL,
743 LDB_ERR_OPERATIONS_ERROR);
746 if (ares->type == LDB_REPLY_REFERRAL) {
747 return ldb_module_send_referral(ac->req, ares->referral);
750 if (ares->error != LDB_SUCCESS) {
751 return ldb_module_done(ac->req, ares->controls,
752 ares->response, ares->error);
754 if (ares->type != LDB_REPLY_DONE) {
755 ldb_set_errstring(ldb,
756 "Invalid reply type!\n");
757 return ldb_module_done(ac->req, NULL, NULL,
758 LDB_ERR_OPERATIONS_ERROR);
761 /* The caller may wish to get controls back from the add */
762 ac->ares = talloc_steal(ac, ares);
764 ret = samldb_next_step(ac);
765 if (ret != LDB_SUCCESS) {
766 return ldb_module_done(ac->req, NULL, NULL, ret);
771 static int samldb_add_entry(struct samldb_ctx *ac)
773 struct ldb_context *ldb;
774 struct ldb_request *req;
777 ldb = ldb_module_get_ctx(ac->module);
779 ret = ldb_build_add_req(&req, ldb, ac,
782 ac, samldb_add_entry_callback,
784 if (ret != LDB_SUCCESS) {
788 return ldb_next_request(ac->module, req);
792 * return true if msg carries an attributeSchema that is intended to be RODC
793 * filtered but is also a system-critical attribute.
795 static bool check_rodc_critical_attribute(struct ldb_message *msg)
797 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
799 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
800 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
801 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE | SEARCH_FLAG_CONFIDENTIAL);
803 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
804 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
812 static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
814 struct ldb_context *ldb;
815 struct loadparm_context *lp_ctx;
816 enum sid_generator sid_generator;
818 struct ldb_control *rodc_control;
820 ldb = ldb_module_get_ctx(ac->module);
822 /* Add informations for the different account types */
824 if (strcmp(ac->type, "user") == 0) {
825 ret = samdb_find_or_add_attribute(ldb, ac->msg,
826 "userAccountControl", "546");
827 if (ret != LDB_SUCCESS) return ret;
828 ret = samdb_find_or_add_attribute(ldb, ac->msg,
830 if (ret != LDB_SUCCESS) return ret;
831 ret = samdb_find_or_add_attribute(ldb, ac->msg,
833 if (ret != LDB_SUCCESS) return ret;
834 ret = samdb_find_or_add_attribute(ldb, ac->msg,
836 if (ret != LDB_SUCCESS) return ret;
837 ret = samdb_find_or_add_attribute(ldb, ac->msg,
838 "badPasswordTime", "0");
839 if (ret != LDB_SUCCESS) return ret;
840 ret = samdb_find_or_add_attribute(ldb, ac->msg,
842 if (ret != LDB_SUCCESS) return ret;
843 ret = samdb_find_or_add_attribute(ldb, ac->msg,
845 if (ret != LDB_SUCCESS) return ret;
846 ret = samdb_find_or_add_attribute(ldb, ac->msg,
848 if (ret != LDB_SUCCESS) return ret;
849 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
850 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
851 "primaryGroupID", DOMAIN_RID_USERS);
852 if (ret != LDB_SUCCESS) return ret;
854 ret = samdb_find_or_add_attribute(ldb, ac->msg,
855 "accountExpires", "9223372036854775807");
856 if (ret != LDB_SUCCESS) return ret;
857 ret = samdb_find_or_add_attribute(ldb, ac->msg,
859 if (ret != LDB_SUCCESS) return ret;
860 } else if (strcmp(ac->type, "group") == 0) {
861 ret = samdb_find_or_add_attribute(ldb, ac->msg,
862 "groupType", "-2147483646");
863 if (ret != LDB_SUCCESS) return ret;
864 } else if (strcmp(ac->type, "classSchema") == 0) {
865 const struct ldb_val *rdn_value, *def_obj_cat_val;
867 ret = samdb_find_or_add_attribute(ldb, ac->msg,
869 if (ret != LDB_SUCCESS) return ret;
871 /* do not allow to mark an attributeSchema as RODC filtered if it
872 * is system-critical */
873 if (check_rodc_critical_attribute(ac->msg)) {
874 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
875 ldb_dn_get_linearized(ac->msg->dn));
876 return LDB_ERR_UNWILLING_TO_PERFORM;
880 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
881 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
882 /* the RDN has prefix "CN" */
883 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
884 samdb_cn_to_lDAPDisplayName(ac,
885 (const char *) rdn_value->data));
886 if (ret != LDB_SUCCESS) {
892 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
895 guid = GUID_random();
896 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
897 if (ret != LDB_SUCCESS) {
903 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
904 "defaultObjectCategory");
905 if (def_obj_cat_val != NULL) {
906 /* "defaultObjectCategory" has been set by the caller.
907 * Do some checks for consistency.
908 * NOTE: The real constraint check (that
909 * 'defaultObjectCategory' is the DN of the new
910 * objectclass or any parent of it) is still incomplete.
911 * For now we say that 'defaultObjectCategory' is valid
912 * if it exists and it is of objectclass "classSchema".
914 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
915 if (ac->dn == NULL) {
916 ldb_set_errstring(ldb,
917 "Invalid DN for 'defaultObjectCategory'!");
918 return LDB_ERR_CONSTRAINT_VIOLATION;
921 /* "defaultObjectCategory" has not been set by the
922 * caller. Use the entry DN for it. */
923 ac->dn = ac->msg->dn;
925 ret = samdb_msg_add_string(ldb, ac, ac->msg,
926 "defaultObjectCategory",
927 ldb_dn_get_linearized(ac->dn));
928 if (ret != LDB_SUCCESS) {
934 ret = samldb_add_step(ac, samldb_add_entry);
935 if (ret != LDB_SUCCESS) return ret;
937 /* Now perform the checks for the 'defaultObjectCategory'. The
938 * lookup DN was already saved in "ac->dn" */
939 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
940 if (ret != LDB_SUCCESS) return ret;
942 return samldb_first_step(ac);
943 } else if (strcmp(ac->type, "attributeSchema") == 0) {
944 const struct ldb_val *rdn_value;
945 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
946 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
947 /* the RDN has prefix "CN" */
948 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
949 samdb_cn_to_lDAPDisplayName(ac,
950 (const char *) rdn_value->data));
951 if (ret != LDB_SUCCESS) {
957 /* do not allow to mark an attributeSchema as RODC filtered if it
958 * is system-critical */
959 if (check_rodc_critical_attribute(ac->msg)) {
960 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical attribute with RODC filtering",
961 ldb_dn_get_linearized(ac->msg->dn));
962 return LDB_ERR_UNWILLING_TO_PERFORM;
965 ret = samdb_find_or_add_attribute(ldb, ac->msg,
966 "isSingleValued", "FALSE");
967 if (ret != LDB_SUCCESS) return ret;
969 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
972 guid = GUID_random();
973 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
974 if (ret != LDB_SUCCESS) {
980 /* handle msDS-IntID attribute */
981 ret = samldb_add_handle_msDS_IntId(ac);
982 if (ret != LDB_SUCCESS) return ret;
984 ret = samldb_add_step(ac, samldb_add_entry);
985 if (ret != LDB_SUCCESS) return ret;
987 return samldb_first_step(ac);
989 ldb_asprintf_errstring(ldb,
990 "Invalid entry type!");
991 return LDB_ERR_OPERATIONS_ERROR;
994 rodc_control = ldb_request_get_control(ac->req, LDB_CONTROL_RODC_DCPROMO_OID);
996 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
997 rodc_control->critical = false;
998 ret = samldb_add_step(ac, samldb_rodc_add);
999 if (ret != LDB_SUCCESS) return ret;
1002 /* check if we have a valid samAccountName */
1003 ret = samldb_add_step(ac, samldb_check_samAccountName);
1004 if (ret != LDB_SUCCESS) return ret;
1006 /* check account_type/group_type */
1007 ret = samldb_add_step(ac, samldb_check_samAccountType);
1008 if (ret != LDB_SUCCESS) return ret;
1010 /* check if we have a valid primary group ID */
1011 if (strcmp(ac->type, "user") == 0) {
1012 ret = samldb_add_step(ac, samldb_check_primaryGroupID_1);
1013 if (ret != LDB_SUCCESS) return ret;
1014 ret = samldb_add_step(ac, samldb_dn_from_sid);
1015 if (ret != LDB_SUCCESS) return ret;
1016 ret = samldb_add_step(ac, samldb_check_primaryGroupID_2);
1017 if (ret != LDB_SUCCESS) return ret;
1020 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
1021 struct loadparm_context);
1023 /* don't allow objectSID to be specified without the RELAX control */
1024 ac->sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
1025 if (ac->sid && !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
1026 !dsdb_module_am_system(ac->module)) {
1027 ldb_asprintf_errstring(ldb, "No SID may be specified in user/group creation for %s",
1028 ldb_dn_get_linearized(ac->msg->dn));
1029 return LDB_ERR_UNWILLING_TO_PERFORM;
1033 sid_generator = lpcfg_sid_generator(lp_ctx);
1034 if (sid_generator == SID_GENERATOR_INTERNAL) {
1035 ret = samldb_add_step(ac, samldb_allocate_sid);
1036 if (ret != LDB_SUCCESS) return ret;
1040 /* finally proceed with adding the entry */
1041 ret = samldb_add_step(ac, samldb_add_entry);
1042 if (ret != LDB_SUCCESS) return ret;
1044 return samldb_first_step(ac);
1047 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
1049 struct ldb_context *ldb;
1052 ldb = ldb_module_get_ctx(ac->module);
1054 ac->sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
1055 if (ac->sid == NULL) {
1056 ac->sid = dom_sid_parse_talloc(ac->msg,
1057 (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
1059 ldb_set_errstring(ldb,
1060 "No valid SID found in "
1061 "ForeignSecurityPrincipal CN!");
1063 return LDB_ERR_CONSTRAINT_VIOLATION;
1065 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
1067 return ldb_operr(ldb);
1071 /* finally proceed with adding the entry */
1072 ret = samldb_add_step(ac, samldb_add_entry);
1073 if (ret != LDB_SUCCESS) return ret;
1075 return samldb_first_step(ac);
1078 static int samldb_schema_info_update(struct samldb_ctx *ac)
1081 struct ldb_context *ldb;
1082 struct dsdb_schema *schema;
1084 /* replicated update should always go through */
1085 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1089 /* do not update schemaInfo during provisioning */
1090 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
1094 ldb = ldb_module_get_ctx(ac->module);
1095 schema = dsdb_get_schema(ldb, NULL);
1097 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
1098 "samldb_schema_info_update: no dsdb_schema loaded");
1099 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
1100 return ldb_operr(ldb);
1103 werr = dsdb_module_schema_info_update(ac->module, schema, DSDB_FLAG_NEXT_MODULE);
1104 if (!W_ERROR_IS_OK(werr)) {
1105 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
1106 "samldb_schema_info_update: "
1107 "dsdb_module_schema_info_update failed with %s",
1109 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
1110 return ldb_operr(ldb);
1117 static int samldb_prim_group_change(struct samldb_ctx *ac)
1119 struct ldb_context *ldb;
1120 const char * attrs[] = { "primaryGroupID", "memberOf", NULL };
1121 struct ldb_result *res;
1122 struct ldb_message_element *el;
1123 struct ldb_message *msg;
1125 struct dom_sid *sid;
1126 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
1129 ldb = ldb_module_get_ctx(ac->module);
1131 /* Fetch informations from the existing object */
1133 ret = ldb_search(ldb, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1135 if (ret != LDB_SUCCESS) {
1139 /* Finds out the DN of the old primary group */
1141 rid = samdb_result_uint(res->msgs[0], "primaryGroupID", (uint32_t) -1);
1142 if (rid == (uint32_t) -1) {
1143 /* User objects do always have a mandatory "primaryGroupID"
1144 * attribute. If this doesn't exist then the object is of the
1145 * wrong type. This is the exact Windows error code */
1146 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1149 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1151 return ldb_operr(ldb);
1154 prev_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
1155 dom_sid_string(ac, sid));
1156 if (prev_prim_group_dn == NULL) {
1157 return ldb_operr(ldb);
1160 /* Finds out the DN of the new primary group */
1162 rid = samdb_result_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
1163 if (rid == (uint32_t) -1) {
1164 /* we aren't affected of any primary group change */
1168 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1170 return ldb_operr(ldb);
1173 new_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
1174 dom_sid_string(ac, sid));
1175 if (new_prim_group_dn == NULL) {
1176 /* Here we know if the specified new primary group candidate is
1178 return LDB_ERR_UNWILLING_TO_PERFORM;
1181 /* Only update the "member" attributes when we really do have a change */
1182 if (ldb_dn_compare(new_prim_group_dn, prev_prim_group_dn) != 0) {
1183 /* We need to be already a normal member of the new primary
1184 * group in order to be successful. */
1185 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
1186 ldb_dn_get_linearized(new_prim_group_dn));
1188 return LDB_ERR_UNWILLING_TO_PERFORM;
1191 /* Remove the "member" attribute on the new primary group */
1192 msg = talloc_zero(ac, struct ldb_message);
1193 msg->dn = new_prim_group_dn;
1195 ret = samdb_msg_add_delval(ldb, ac, msg, "member",
1196 ldb_dn_get_linearized(ac->msg->dn));
1197 if (ret != LDB_SUCCESS) {
1201 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
1202 if (ret != LDB_SUCCESS) {
1206 /* Add a "member" attribute for the previous primary group */
1207 msg = talloc_zero(ac, struct ldb_message);
1208 msg->dn = prev_prim_group_dn;
1210 ret = samdb_msg_add_addval(ldb, ac, msg, "member",
1211 ldb_dn_get_linearized(ac->msg->dn));
1212 if (ret != LDB_SUCCESS) {
1216 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
1217 if (ret != LDB_SUCCESS) {
1226 static int samldb_member_check(struct samldb_ctx *ac)
1228 struct ldb_context *ldb;
1229 struct ldb_message_element *el;
1230 struct ldb_dn *member_dn, *group_dn;
1231 uint32_t prim_group_rid;
1232 struct dom_sid *sid;
1235 ldb = ldb_module_get_ctx(ac->module);
1237 el = ldb_msg_find_element(ac->msg, "member");
1239 /* we aren't affected */
1243 for (i = 0; i < el->num_values; i++) {
1244 /* Denies to add "member"s to groups which are primary ones
1246 member_dn = ldb_dn_from_ldb_val(ac, ldb, &el->values[i]);
1247 if (!ldb_dn_validate(member_dn)) {
1248 return ldb_operr(ldb);
1251 prim_group_rid = samdb_search_uint(ldb, ac, (uint32_t) -1,
1252 member_dn, "primaryGroupID",
1254 if (prim_group_rid == (uint32_t) -1) {
1255 /* the member hasn't to be a user account -> therefore
1256 * no check needed in this case. */
1260 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1263 return ldb_operr(ldb);
1266 group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
1267 dom_sid_string(ac, sid));
1268 if (group_dn == NULL) {
1269 return ldb_operr(ldb);
1272 if (ldb_dn_compare(group_dn, ac->msg->dn) == 0) {
1273 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1281 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
1283 struct ldb_context *ldb;
1284 struct dom_sid *sid;
1289 ldb = ldb_module_get_ctx(ac->module);
1291 /* Finds out the SID/RID of the SAM object */
1292 sid = samdb_search_dom_sid(ldb, ac, ac->req->op.del.dn, "objectSID",
1295 /* No SID - it might not be a SAM object - therefore ok */
1298 status = dom_sid_split_rid(ac, sid, NULL, &rid);
1299 if (!NT_STATUS_IS_OK(status)) {
1300 return ldb_operr(ldb);
1303 /* Special object (security principal?) */
1307 /* Deny delete requests from groups which are primary ones */
1308 count = samdb_search_count(ldb, NULL,
1309 "(&(primaryGroupID=%u)(objectClass=user))",
1312 return ldb_operr(ldb);
1315 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1323 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
1325 struct ldb_context *ldb;
1326 struct samldb_ctx *ac;
1329 ldb = ldb_module_get_ctx(module);
1330 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
1332 /* do not manipulate our control entries */
1333 if (ldb_dn_is_special(req->op.add.message->dn)) {
1334 return ldb_next_request(module, req);
1337 ac = samldb_ctx_init(module, req);
1339 return ldb_operr(ldb);
1342 /* build the new msg */
1343 ac->msg = ldb_msg_copy(ac, ac->req->op.add.message);
1346 ldb_debug(ldb, LDB_DEBUG_FATAL,
1347 "samldb_add: ldb_msg_copy failed!\n");
1348 return ldb_operr(ldb);
1351 if (samdb_find_attribute(ldb, ac->msg,
1352 "objectclass", "user") != NULL) {
1353 return samldb_fill_object(ac, "user");
1356 if (samdb_find_attribute(ldb, ac->msg,
1357 "objectclass", "group") != NULL) {
1358 return samldb_fill_object(ac, "group");
1361 /* perhaps a foreignSecurityPrincipal? */
1362 if (samdb_find_attribute(ldb, ac->msg,
1364 "foreignSecurityPrincipal") != NULL) {
1365 return samldb_fill_foreignSecurityPrincipal_object(ac);
1368 if (samdb_find_attribute(ldb, ac->msg,
1369 "objectclass", "classSchema") != NULL) {
1370 ret = samldb_schema_info_update(ac);
1371 if (ret != LDB_SUCCESS) {
1376 return samldb_fill_object(ac, "classSchema");
1379 if (samdb_find_attribute(ldb, ac->msg,
1380 "objectclass", "attributeSchema") != NULL) {
1381 ret = samldb_schema_info_update(ac);
1382 if (ret != LDB_SUCCESS) {
1387 return samldb_fill_object(ac, "attributeSchema");
1392 /* nothing matched, go on */
1393 return ldb_next_request(module, req);
1397 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
1399 struct ldb_context *ldb;
1400 struct samldb_ctx *ac;
1401 struct ldb_message *msg;
1402 struct ldb_message_element *el, *el2;
1404 uint32_t account_type;
1406 if (ldb_dn_is_special(req->op.mod.message->dn)) {
1407 /* do not manipulate our control entries */
1408 return ldb_next_request(module, req);
1411 ldb = ldb_module_get_ctx(module);
1413 if (ldb_msg_find_element(req->op.mod.message, "sAMAccountType") != NULL) {
1414 ldb_asprintf_errstring(ldb,
1415 "sAMAccountType must not be specified!");
1416 return LDB_ERR_UNWILLING_TO_PERFORM;
1419 /* msDS-IntId is not allowed to be modified
1420 * except when modification comes from replication */
1421 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
1422 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1423 return LDB_ERR_CONSTRAINT_VIOLATION;
1427 ac = samldb_ctx_init(module, req);
1429 return ldb_operr(ldb);
1432 /* TODO: do not modify original request, create a new one */
1434 el = ldb_msg_find_element(req->op.mod.message, "groupType");
1435 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1436 uint32_t group_type;
1438 req->op.mod.message = msg = ldb_msg_copy_shallow(req,
1439 req->op.mod.message);
1441 group_type = strtoul((const char *)el->values[0].data, NULL, 0);
1442 account_type = ds_gtype2atype(group_type);
1443 ret = samdb_msg_add_uint(ldb, msg, msg,
1446 if (ret != LDB_SUCCESS) {
1449 el2 = ldb_msg_find_element(msg, "sAMAccountType");
1450 el2->flags = LDB_FLAG_MOD_REPLACE;
1452 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1453 return LDB_ERR_UNWILLING_TO_PERFORM;
1456 el = ldb_msg_find_element(req->op.mod.message, "primaryGroupID");
1457 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1458 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1459 req->op.mod.message);
1461 ret = samldb_prim_group_change(ac);
1462 if (ret != LDB_SUCCESS) {
1466 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1467 return LDB_ERR_UNWILLING_TO_PERFORM;
1470 el = ldb_msg_find_element(req->op.mod.message, "userAccountControl");
1471 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1472 uint32_t user_account_control;
1474 req->op.mod.message = msg = ldb_msg_copy_shallow(req,
1475 req->op.mod.message);
1477 user_account_control = strtoul((const char *)el->values[0].data,
1479 account_type = ds_uf2atype(user_account_control);
1480 ret = samdb_msg_add_uint(ldb, msg, msg,
1483 if (ret != LDB_SUCCESS) {
1486 el2 = ldb_msg_find_element(msg, "sAMAccountType");
1487 el2->flags = LDB_FLAG_MOD_REPLACE;
1489 if (user_account_control & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1490 ret = samdb_msg_add_string(ldb, msg, msg,
1491 "isCriticalSystemObject", "TRUE");
1492 if (ret != LDB_SUCCESS) {
1495 el2 = ldb_msg_find_element(msg, "isCriticalSystemObject");
1496 el2->flags = LDB_FLAG_MOD_REPLACE;
1498 /* DCs have primaryGroupID of DOMAIN_RID_DCS */
1499 if (!ldb_msg_find_element(msg, "primaryGroupID")) {
1501 if (user_account_control & UF_SERVER_TRUST_ACCOUNT) {
1502 rid = DOMAIN_RID_DCS;
1505 rid = DOMAIN_RID_READONLY_DCS;
1507 ret = samdb_msg_add_uint(ldb, msg, msg,
1508 "primaryGroupID", rid);
1509 if (ret != LDB_SUCCESS) {
1512 el2 = ldb_msg_find_element(msg, "primaryGroupID");
1513 el2->flags = LDB_FLAG_MOD_REPLACE;
1517 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1518 return LDB_ERR_UNWILLING_TO_PERFORM;
1521 el = ldb_msg_find_element(req->op.mod.message, "member");
1522 if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1523 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1524 req->op.mod.message);
1526 ret = samldb_member_check(ac);
1527 if (ret != LDB_SUCCESS) {
1532 return ldb_next_request(module, req);
1536 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
1538 struct samldb_ctx *ac;
1541 if (ldb_dn_is_special(req->op.del.dn)) {
1542 /* do not manipulate our control entries */
1543 return ldb_next_request(module, req);
1546 ac = samldb_ctx_init(module, req);
1548 return ldb_operr(ldb_module_get_ctx(module));
1550 ret = samldb_prim_group_users_check(ac);
1551 if (ret != LDB_SUCCESS) {
1555 return ldb_next_request(module, req);
1558 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
1560 struct ldb_context *ldb = ldb_module_get_ctx(module);
1561 struct dsdb_fsmo_extended_op *exop;
1564 exop = talloc_get_type(req->op.extended.data, struct dsdb_fsmo_extended_op);
1566 ldb_debug(ldb, LDB_DEBUG_FATAL, "samldb_extended_allocate_rid_pool: invalid extended data\n");
1567 return LDB_ERR_PROTOCOL_ERROR;
1570 ret = ridalloc_allocate_rid_pool_fsmo(module, exop);
1571 if (ret != LDB_SUCCESS) {
1575 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
1578 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
1580 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
1581 return samldb_extended_allocate_rid_pool(module, req);
1584 return ldb_next_request(module, req);
1588 _PUBLIC_ const struct ldb_module_ops ldb_samldb_module_ops = {
1591 .modify = samldb_modify,
1592 .del = samldb_delete,
1593 .extended = samldb_extended