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 return samldb_next_step(ac);
417 * samldb_dn_from_sid (async)
420 static int samldb_dn_from_sid(struct samldb_ctx *ac);
422 static int samldb_dn_from_sid_callback(struct ldb_request *req,
423 struct ldb_reply *ares)
425 struct ldb_context *ldb;
426 struct samldb_ctx *ac;
429 ac = talloc_get_type(req->context, struct samldb_ctx);
430 ldb = ldb_module_get_ctx(ac->module);
433 ret = LDB_ERR_OPERATIONS_ERROR;
436 if (ares->error != LDB_SUCCESS) {
437 return ldb_module_done(ac->req, ares->controls,
438 ares->response, ares->error);
441 switch (ares->type) {
442 case LDB_REPLY_ENTRY:
444 if (ac->res_dn != NULL) {
446 ldb_set_errstring(ldb,
447 "Invalid number of results while searching "
448 "for domain objects!");
449 ret = LDB_ERR_OPERATIONS_ERROR;
452 ac->res_dn = ldb_dn_copy(ac, ares->message->dn);
458 case LDB_REPLY_REFERRAL:
467 /* found or not found, go on */
468 ret = samldb_next_step(ac);
473 if (ret != LDB_SUCCESS) {
474 return ldb_module_done(ac->req, NULL, NULL, ret);
480 /* Finds the DN "res_dn" of an object with a given SID "sid" */
481 static int samldb_dn_from_sid(struct samldb_ctx *ac)
483 struct ldb_context *ldb;
484 static const char * const attrs[] = { NULL };
485 struct ldb_request *req;
489 ldb = ldb_module_get_ctx(ac->module);
492 return ldb_operr(ldb);
494 filter = talloc_asprintf(ac, "(objectSid=%s)",
495 ldap_encode_ndr_dom_sid(ac, ac->sid));
499 ret = ldb_build_search_req(&req, ldb, ac,
500 ldb_get_default_basedn(ldb),
504 ac, samldb_dn_from_sid_callback,
506 if (ret != LDB_SUCCESS)
509 return ldb_next_request(ac->module, req);
513 static int samldb_check_primaryGroupID_1(struct samldb_ctx *ac)
515 struct ldb_context *ldb;
518 ldb = ldb_module_get_ctx(ac->module);
520 rid = samdb_result_uint(ac->msg, "primaryGroupID", ~0);
521 ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
523 return ldb_operr(ldb);
526 return samldb_next_step(ac);
529 static int samldb_check_primaryGroupID_2(struct samldb_ctx *ac)
531 if (ac->res_dn == NULL) {
532 struct ldb_context *ldb;
533 ldb = ldb_module_get_ctx(ac->module);
534 ldb_asprintf_errstring(ldb,
535 "Failed to find group sid %s!",
536 dom_sid_string(ac->sid, ac->sid));
537 return LDB_ERR_UNWILLING_TO_PERFORM;
540 return samldb_next_step(ac);
545 * samldb_find_for_defaultObjectCategory (async)
548 static int samldb_find_for_defaultObjectCategory_callback(struct ldb_request *req,
549 struct ldb_reply *ares)
551 struct ldb_context *ldb;
552 struct samldb_ctx *ac;
555 ac = talloc_get_type(req->context, struct samldb_ctx);
556 ldb = ldb_module_get_ctx(ac->module);
559 ret = LDB_ERR_OPERATIONS_ERROR;
562 if (ares->error != LDB_SUCCESS) {
563 if (ares->error == LDB_ERR_NO_SUCH_OBJECT) {
564 if (ldb_request_get_control(ac->req,
565 LDB_CONTROL_RELAX_OID) != NULL) {
566 /* Don't be pricky when the DN doesn't exist */
567 /* if we have the RELAX control specified */
568 ac->res_dn = req->op.search.base;
569 return samldb_next_step(ac);
571 ldb_set_errstring(ldb,
572 "samldb_find_defaultObjectCategory: "
573 "Invalid DN for 'defaultObjectCategory'!");
574 ares->error = LDB_ERR_CONSTRAINT_VIOLATION;
578 return ldb_module_done(ac->req, ares->controls,
579 ares->response, ares->error);
582 switch (ares->type) {
583 case LDB_REPLY_ENTRY:
584 ac->res_dn = talloc_steal(ac, ares->message->dn);
589 case LDB_REPLY_REFERRAL:
598 if (ac->res_dn != NULL) {
599 /* when found go on */
600 ret = samldb_next_step(ac);
602 ret = LDB_ERR_OPERATIONS_ERROR;
608 if (ret != LDB_SUCCESS) {
609 return ldb_module_done(ac->req, NULL, NULL, ret);
615 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
617 struct ldb_context *ldb;
618 struct ldb_request *req;
619 static const char *no_attrs[] = { NULL };
622 ldb = ldb_module_get_ctx(ac->module);
626 ret = ldb_build_search_req(&req, ldb, ac,
627 ac->dn, LDB_SCOPE_BASE,
628 "(objectClass=classSchema)", no_attrs,
630 samldb_find_for_defaultObjectCategory_callback,
632 if (ret != LDB_SUCCESS) {
636 ret = dsdb_request_add_controls(req,
637 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT);
638 if (ret != LDB_SUCCESS) {
642 return ldb_next_request(ac->module, req);
646 * msDS-IntId attributeSchema attribute handling
647 * during LDB_ADD request processing
649 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
654 uint32_t system_flags;
655 struct ldb_context *ldb;
656 struct ldb_result *ldb_res;
657 struct ldb_dn *schema_dn;
659 ldb = ldb_module_get_ctx(ac->module);
660 schema_dn = ldb_get_schema_basedn(ldb);
662 /* replicated update should always go through */
663 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
667 /* msDS-IntId is handled by system and should never be
668 * passed by clients */
669 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
670 return LDB_ERR_UNWILLING_TO_PERFORM;
673 /* do not generate msDS-IntId if Relax control is passed */
674 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
678 /* check Functional Level */
679 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
683 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
684 system_flags = ldb_msg_find_attr_as_uint(ac->msg, "systemFlags", 0);
685 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
689 /* Generate new value for msDs-IntId
690 * Value should be in 0x80000000..0xBFFFFFFF range */
691 msds_intid = generate_random() % 0X3FFFFFFF;
692 msds_intid += 0x80000000;
694 /* probe id values until unique one is found */
697 if (msds_intid > 0xBFFFFFFF) {
698 msds_intid = 0x80000001;
701 ret = dsdb_module_search(ac->module, ac,
703 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
704 DSDB_FLAG_NEXT_MODULE,
705 "(msDS-IntId=%d)", msds_intid);
706 if (ret != LDB_SUCCESS) {
707 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
708 __location__": Searching for msDS-IntId=%d failed - %s\n",
711 return ldb_operr(ldb);
713 id_exists = (ldb_res->count > 0);
715 talloc_free(ldb_res);
718 return ldb_msg_add_fmt(ac->msg, "msDS-IntId", "%d", msds_intid);
723 * samldb_add_entry (async)
726 static int samldb_add_entry_callback(struct ldb_request *req,
727 struct ldb_reply *ares)
729 struct ldb_context *ldb;
730 struct samldb_ctx *ac;
733 ac = talloc_get_type(req->context, struct samldb_ctx);
734 ldb = ldb_module_get_ctx(ac->module);
737 return ldb_module_done(ac->req, NULL, NULL,
738 LDB_ERR_OPERATIONS_ERROR);
741 if (ares->type == LDB_REPLY_REFERRAL) {
742 return ldb_module_send_referral(ac->req, ares->referral);
745 if (ares->error != LDB_SUCCESS) {
746 return ldb_module_done(ac->req, ares->controls,
747 ares->response, ares->error);
749 if (ares->type != LDB_REPLY_DONE) {
750 ldb_set_errstring(ldb,
751 "Invalid reply type!\n");
752 return ldb_module_done(ac->req, NULL, NULL,
753 LDB_ERR_OPERATIONS_ERROR);
756 /* The caller may wish to get controls back from the add */
757 ac->ares = talloc_steal(ac, ares);
759 ret = samldb_next_step(ac);
760 if (ret != LDB_SUCCESS) {
761 return ldb_module_done(ac->req, NULL, NULL, ret);
766 static int samldb_add_entry(struct samldb_ctx *ac)
768 struct ldb_context *ldb;
769 struct ldb_request *req;
772 ldb = ldb_module_get_ctx(ac->module);
774 ret = ldb_build_add_req(&req, ldb, ac,
777 ac, samldb_add_entry_callback,
779 if (ret != LDB_SUCCESS) {
783 return ldb_next_request(ac->module, req);
787 * return true if msg carries an attributeSchema that is intended to be RODC
788 * filtered but is also a system-critical attribute.
790 static bool check_rodc_critical_attribute(struct ldb_message *msg)
792 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
794 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
795 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
796 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE | SEARCH_FLAG_CONFIDENTIAL);
798 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
799 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
807 static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
809 struct ldb_context *ldb;
810 struct loadparm_context *lp_ctx;
811 enum sid_generator sid_generator;
813 struct ldb_control *rodc_control;
815 ldb = ldb_module_get_ctx(ac->module);
817 /* Add informations for the different account types */
819 if (strcmp(ac->type, "user") == 0) {
820 ret = samdb_find_or_add_attribute(ldb, ac->msg,
821 "userAccountControl", "546");
822 if (ret != LDB_SUCCESS) return ret;
823 ret = samdb_find_or_add_attribute(ldb, ac->msg,
825 if (ret != LDB_SUCCESS) return ret;
826 ret = samdb_find_or_add_attribute(ldb, ac->msg,
828 if (ret != LDB_SUCCESS) return ret;
829 ret = samdb_find_or_add_attribute(ldb, ac->msg,
831 if (ret != LDB_SUCCESS) return ret;
832 ret = samdb_find_or_add_attribute(ldb, ac->msg,
833 "badPasswordTime", "0");
834 if (ret != LDB_SUCCESS) return ret;
835 ret = samdb_find_or_add_attribute(ldb, ac->msg,
837 if (ret != LDB_SUCCESS) return ret;
838 ret = samdb_find_or_add_attribute(ldb, ac->msg,
840 if (ret != LDB_SUCCESS) return ret;
841 ret = samdb_find_or_add_attribute(ldb, ac->msg,
843 if (ret != LDB_SUCCESS) return ret;
844 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
845 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
846 "primaryGroupID", DOMAIN_RID_USERS);
847 if (ret != LDB_SUCCESS) return ret;
849 ret = samdb_find_or_add_attribute(ldb, ac->msg,
850 "accountExpires", "9223372036854775807");
851 if (ret != LDB_SUCCESS) return ret;
852 ret = samdb_find_or_add_attribute(ldb, ac->msg,
854 if (ret != LDB_SUCCESS) return ret;
855 } else if (strcmp(ac->type, "group") == 0) {
856 ret = samdb_find_or_add_attribute(ldb, ac->msg,
857 "groupType", "-2147483646");
858 if (ret != LDB_SUCCESS) return ret;
859 } else if (strcmp(ac->type, "classSchema") == 0) {
860 const struct ldb_val *rdn_value, *def_obj_cat_val;
862 ret = samdb_find_or_add_attribute(ldb, ac->msg,
864 if (ret != LDB_SUCCESS) return ret;
866 /* do not allow to mark an attributeSchema as RODC filtered if it
867 * is system-critical */
868 if (check_rodc_critical_attribute(ac->msg)) {
869 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
870 ldb_dn_get_linearized(ac->msg->dn));
871 return LDB_ERR_UNWILLING_TO_PERFORM;
875 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
876 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
877 /* the RDN has prefix "CN" */
878 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
879 samdb_cn_to_lDAPDisplayName(ac,
880 (const char *) rdn_value->data));
881 if (ret != LDB_SUCCESS) {
887 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
890 guid = GUID_random();
891 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
892 if (ret != LDB_SUCCESS) {
898 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
899 "defaultObjectCategory");
900 if (def_obj_cat_val != NULL) {
901 /* "defaultObjectCategory" has been set by the caller.
902 * Do some checks for consistency.
903 * NOTE: The real constraint check (that
904 * 'defaultObjectCategory' is the DN of the new
905 * objectclass or any parent of it) is still incomplete.
906 * For now we say that 'defaultObjectCategory' is valid
907 * if it exists and it is of objectclass "classSchema".
909 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
910 if (ac->dn == NULL) {
911 ldb_set_errstring(ldb,
912 "Invalid DN for 'defaultObjectCategory'!");
913 return LDB_ERR_CONSTRAINT_VIOLATION;
916 /* "defaultObjectCategory" has not been set by the
917 * caller. Use the entry DN for it. */
918 ac->dn = ac->msg->dn;
920 ret = samdb_msg_add_string(ldb, ac, ac->msg,
921 "defaultObjectCategory",
922 ldb_dn_get_linearized(ac->dn));
923 if (ret != LDB_SUCCESS) {
929 ret = samldb_add_step(ac, samldb_add_entry);
930 if (ret != LDB_SUCCESS) return ret;
932 /* Now perform the checks for the 'defaultObjectCategory'. The
933 * lookup DN was already saved in "ac->dn" */
934 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
935 if (ret != LDB_SUCCESS) return ret;
937 return samldb_first_step(ac);
938 } else if (strcmp(ac->type, "attributeSchema") == 0) {
939 const struct ldb_val *rdn_value;
940 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
941 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
942 /* the RDN has prefix "CN" */
943 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
944 samdb_cn_to_lDAPDisplayName(ac,
945 (const char *) rdn_value->data));
946 if (ret != LDB_SUCCESS) {
952 /* do not allow to mark an attributeSchema as RODC filtered if it
953 * is system-critical */
954 if (check_rodc_critical_attribute(ac->msg)) {
955 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical attribute with RODC filtering",
956 ldb_dn_get_linearized(ac->msg->dn));
957 return LDB_ERR_UNWILLING_TO_PERFORM;
960 ret = samdb_find_or_add_attribute(ldb, ac->msg,
961 "isSingleValued", "FALSE");
962 if (ret != LDB_SUCCESS) return ret;
964 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
967 guid = GUID_random();
968 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
969 if (ret != LDB_SUCCESS) {
975 /* handle msDS-IntID attribute */
976 ret = samldb_add_handle_msDS_IntId(ac);
977 if (ret != LDB_SUCCESS) return ret;
979 ret = samldb_add_step(ac, samldb_add_entry);
980 if (ret != LDB_SUCCESS) return ret;
982 return samldb_first_step(ac);
984 ldb_asprintf_errstring(ldb,
985 "Invalid entry type!");
986 return LDB_ERR_OPERATIONS_ERROR;
989 /* check if we have a valid samAccountName */
990 ret = samldb_add_step(ac, samldb_check_samAccountName);
991 if (ret != LDB_SUCCESS) return ret;
993 /* check account_type/group_type */
994 ret = samldb_add_step(ac, samldb_check_samAccountType);
995 if (ret != LDB_SUCCESS) return ret;
997 /* check if we have a valid primary group ID */
998 if (strcmp(ac->type, "user") == 0) {
999 ret = samldb_add_step(ac, samldb_check_primaryGroupID_1);
1000 if (ret != LDB_SUCCESS) return ret;
1001 ret = samldb_add_step(ac, samldb_dn_from_sid);
1002 if (ret != LDB_SUCCESS) return ret;
1003 ret = samldb_add_step(ac, samldb_check_primaryGroupID_2);
1004 if (ret != LDB_SUCCESS) return ret;
1007 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
1008 struct loadparm_context);
1010 /* don't allow objectSID to be specified without the RELAX control */
1011 ac->sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
1012 if (ac->sid && !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
1013 !dsdb_module_am_system(ac->module)) {
1014 ldb_asprintf_errstring(ldb, "No SID may be specified in user/group creation for %s",
1015 ldb_dn_get_linearized(ac->msg->dn));
1016 return LDB_ERR_UNWILLING_TO_PERFORM;
1020 sid_generator = lpcfg_sid_generator(lp_ctx);
1021 if (sid_generator == SID_GENERATOR_INTERNAL) {
1022 ret = samldb_add_step(ac, samldb_allocate_sid);
1023 if (ret != LDB_SUCCESS) return ret;
1027 rodc_control = ldb_request_get_control(ac->req, LDB_CONTROL_RODC_DCPROMO_OID);
1029 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
1030 rodc_control->critical = false;
1031 ret = samldb_add_step(ac, samldb_rodc_add);
1032 if (ret != LDB_SUCCESS) return ret;
1036 /* finally proceed with adding the entry */
1037 ret = samldb_add_step(ac, samldb_add_entry);
1038 if (ret != LDB_SUCCESS) return ret;
1040 return samldb_first_step(ac);
1043 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
1045 struct ldb_context *ldb;
1048 ldb = ldb_module_get_ctx(ac->module);
1050 ac->sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
1051 if (ac->sid == NULL) {
1052 ac->sid = dom_sid_parse_talloc(ac->msg,
1053 (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
1055 ldb_set_errstring(ldb,
1056 "No valid SID found in "
1057 "ForeignSecurityPrincipal CN!");
1059 return LDB_ERR_CONSTRAINT_VIOLATION;
1061 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
1063 return ldb_operr(ldb);
1067 /* finally proceed with adding the entry */
1068 ret = samldb_add_step(ac, samldb_add_entry);
1069 if (ret != LDB_SUCCESS) return ret;
1071 return samldb_first_step(ac);
1074 static int samldb_schema_info_update(struct samldb_ctx *ac)
1077 struct ldb_context *ldb;
1078 struct dsdb_schema *schema;
1080 /* replicated update should always go through */
1081 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1085 /* do not update schemaInfo during provisioning */
1086 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
1090 ldb = ldb_module_get_ctx(ac->module);
1091 schema = dsdb_get_schema(ldb, NULL);
1093 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
1094 "samldb_schema_info_update: no dsdb_schema loaded");
1095 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
1096 return ldb_operr(ldb);
1099 werr = dsdb_module_schema_info_update(ac->module, schema, DSDB_FLAG_NEXT_MODULE);
1100 if (!W_ERROR_IS_OK(werr)) {
1101 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
1102 "samldb_schema_info_update: "
1103 "dsdb_module_schema_info_update failed with %s",
1105 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
1106 return ldb_operr(ldb);
1113 static int samldb_prim_group_change(struct samldb_ctx *ac)
1115 struct ldb_context *ldb;
1116 const char * attrs[] = { "primaryGroupID", "memberOf", NULL };
1117 struct ldb_result *res;
1118 struct ldb_message_element *el;
1119 struct ldb_message *msg;
1121 struct dom_sid *sid;
1122 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
1125 ldb = ldb_module_get_ctx(ac->module);
1127 /* Fetch informations from the existing object */
1129 ret = ldb_search(ldb, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1131 if (ret != LDB_SUCCESS) {
1135 /* Finds out the DN of the old primary group */
1137 rid = samdb_result_uint(res->msgs[0], "primaryGroupID", (uint32_t) -1);
1138 if (rid == (uint32_t) -1) {
1139 /* User objects do always have a mandatory "primaryGroupID"
1140 * attribute. If this doesn't exist then the object is of the
1141 * wrong type. This is the exact Windows error code */
1142 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1145 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1147 return ldb_operr(ldb);
1150 prev_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
1151 dom_sid_string(ac, sid));
1152 if (prev_prim_group_dn == NULL) {
1153 return ldb_operr(ldb);
1156 /* Finds out the DN of the new primary group */
1158 rid = samdb_result_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
1159 if (rid == (uint32_t) -1) {
1160 /* we aren't affected of any primary group change */
1164 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1166 return ldb_operr(ldb);
1169 new_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
1170 dom_sid_string(ac, sid));
1171 if (new_prim_group_dn == NULL) {
1172 /* Here we know if the specified new primary group candidate is
1174 return LDB_ERR_UNWILLING_TO_PERFORM;
1177 /* Only update the "member" attributes when we really do have a change */
1178 if (ldb_dn_compare(new_prim_group_dn, prev_prim_group_dn) != 0) {
1179 /* We need to be already a normal member of the new primary
1180 * group in order to be successful. */
1181 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
1182 ldb_dn_get_linearized(new_prim_group_dn));
1184 return LDB_ERR_UNWILLING_TO_PERFORM;
1187 /* Remove the "member" attribute on the new primary group */
1188 msg = talloc_zero(ac, struct ldb_message);
1189 msg->dn = new_prim_group_dn;
1191 ret = samdb_msg_add_delval(ldb, ac, msg, "member",
1192 ldb_dn_get_linearized(ac->msg->dn));
1193 if (ret != LDB_SUCCESS) {
1197 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
1198 if (ret != LDB_SUCCESS) {
1202 /* Add a "member" attribute for the previous primary group */
1203 msg = talloc_zero(ac, struct ldb_message);
1204 msg->dn = prev_prim_group_dn;
1206 ret = samdb_msg_add_addval(ldb, ac, msg, "member",
1207 ldb_dn_get_linearized(ac->msg->dn));
1208 if (ret != LDB_SUCCESS) {
1212 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
1213 if (ret != LDB_SUCCESS) {
1222 static int samldb_member_check(struct samldb_ctx *ac)
1224 struct ldb_context *ldb;
1225 struct ldb_message_element *el;
1226 struct ldb_dn *member_dn, *group_dn;
1227 uint32_t prim_group_rid;
1228 struct dom_sid *sid;
1231 ldb = ldb_module_get_ctx(ac->module);
1233 el = ldb_msg_find_element(ac->msg, "member");
1235 /* we aren't affected */
1239 for (i = 0; i < el->num_values; i++) {
1240 /* Denies to add "member"s to groups which are primary ones
1242 member_dn = ldb_dn_from_ldb_val(ac, ldb, &el->values[i]);
1243 if (!ldb_dn_validate(member_dn)) {
1244 return ldb_operr(ldb);
1247 prim_group_rid = samdb_search_uint(ldb, ac, (uint32_t) -1,
1248 member_dn, "primaryGroupID",
1250 if (prim_group_rid == (uint32_t) -1) {
1251 /* the member hasn't to be a user account -> therefore
1252 * no check needed in this case. */
1256 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1259 return ldb_operr(ldb);
1262 group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
1263 dom_sid_string(ac, sid));
1264 if (group_dn == NULL) {
1265 return ldb_operr(ldb);
1268 if (ldb_dn_compare(group_dn, ac->msg->dn) == 0) {
1269 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1277 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
1279 struct ldb_context *ldb;
1280 struct dom_sid *sid;
1285 ldb = ldb_module_get_ctx(ac->module);
1287 /* Finds out the SID/RID of the SAM object */
1288 sid = samdb_search_dom_sid(ldb, ac, ac->req->op.del.dn, "objectSID",
1291 /* No SID - it might not be a SAM object - therefore ok */
1294 status = dom_sid_split_rid(ac, sid, NULL, &rid);
1295 if (!NT_STATUS_IS_OK(status)) {
1296 return ldb_operr(ldb);
1299 /* Special object (security principal?) */
1303 /* Deny delete requests from groups which are primary ones */
1304 count = samdb_search_count(ldb, NULL,
1305 "(&(primaryGroupID=%u)(objectClass=user))",
1308 return ldb_operr(ldb);
1311 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1319 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
1321 struct ldb_context *ldb;
1322 struct samldb_ctx *ac;
1325 ldb = ldb_module_get_ctx(module);
1326 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
1328 /* do not manipulate our control entries */
1329 if (ldb_dn_is_special(req->op.add.message->dn)) {
1330 return ldb_next_request(module, req);
1333 ac = samldb_ctx_init(module, req);
1335 return ldb_operr(ldb);
1338 /* build the new msg */
1339 ac->msg = ldb_msg_copy(ac, ac->req->op.add.message);
1342 ldb_debug(ldb, LDB_DEBUG_FATAL,
1343 "samldb_add: ldb_msg_copy failed!\n");
1344 return ldb_operr(ldb);
1347 if (samdb_find_attribute(ldb, ac->msg,
1348 "objectclass", "user") != NULL) {
1349 return samldb_fill_object(ac, "user");
1352 if (samdb_find_attribute(ldb, ac->msg,
1353 "objectclass", "group") != NULL) {
1354 return samldb_fill_object(ac, "group");
1357 /* perhaps a foreignSecurityPrincipal? */
1358 if (samdb_find_attribute(ldb, ac->msg,
1360 "foreignSecurityPrincipal") != NULL) {
1361 return samldb_fill_foreignSecurityPrincipal_object(ac);
1364 if (samdb_find_attribute(ldb, ac->msg,
1365 "objectclass", "classSchema") != NULL) {
1366 ret = samldb_schema_info_update(ac);
1367 if (ret != LDB_SUCCESS) {
1372 return samldb_fill_object(ac, "classSchema");
1375 if (samdb_find_attribute(ldb, ac->msg,
1376 "objectclass", "attributeSchema") != NULL) {
1377 ret = samldb_schema_info_update(ac);
1378 if (ret != LDB_SUCCESS) {
1383 return samldb_fill_object(ac, "attributeSchema");
1388 /* nothing matched, go on */
1389 return ldb_next_request(module, req);
1393 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
1395 struct ldb_context *ldb;
1396 struct samldb_ctx *ac;
1397 struct ldb_message *msg;
1398 struct ldb_message_element *el, *el2;
1400 uint32_t account_type;
1402 if (ldb_dn_is_special(req->op.mod.message->dn)) {
1403 /* do not manipulate our control entries */
1404 return ldb_next_request(module, req);
1407 ldb = ldb_module_get_ctx(module);
1409 if (ldb_msg_find_element(req->op.mod.message, "sAMAccountType") != NULL) {
1410 ldb_asprintf_errstring(ldb,
1411 "sAMAccountType must not be specified!");
1412 return LDB_ERR_UNWILLING_TO_PERFORM;
1415 /* msDS-IntId is not allowed to be modified
1416 * except when modification comes from replication */
1417 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
1418 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1419 return LDB_ERR_CONSTRAINT_VIOLATION;
1423 ac = samldb_ctx_init(module, req);
1425 return ldb_operr(ldb);
1428 /* TODO: do not modify original request, create a new one */
1430 el = ldb_msg_find_element(req->op.mod.message, "groupType");
1431 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1432 uint32_t group_type;
1434 req->op.mod.message = msg = ldb_msg_copy_shallow(req,
1435 req->op.mod.message);
1437 group_type = strtoul((const char *)el->values[0].data, NULL, 0);
1438 account_type = ds_gtype2atype(group_type);
1439 ret = samdb_msg_add_uint(ldb, msg, msg,
1442 if (ret != LDB_SUCCESS) {
1445 el2 = ldb_msg_find_element(msg, "sAMAccountType");
1446 el2->flags = LDB_FLAG_MOD_REPLACE;
1448 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1449 return LDB_ERR_UNWILLING_TO_PERFORM;
1452 el = ldb_msg_find_element(req->op.mod.message, "primaryGroupID");
1453 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1454 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1455 req->op.mod.message);
1457 ret = samldb_prim_group_change(ac);
1458 if (ret != LDB_SUCCESS) {
1462 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1463 return LDB_ERR_UNWILLING_TO_PERFORM;
1466 el = ldb_msg_find_element(req->op.mod.message, "userAccountControl");
1467 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1468 uint32_t user_account_control;
1470 req->op.mod.message = msg = ldb_msg_copy_shallow(req,
1471 req->op.mod.message);
1473 user_account_control = strtoul((const char *)el->values[0].data,
1475 account_type = ds_uf2atype(user_account_control);
1476 ret = samdb_msg_add_uint(ldb, msg, msg,
1479 if (ret != LDB_SUCCESS) {
1482 el2 = ldb_msg_find_element(msg, "sAMAccountType");
1483 el2->flags = LDB_FLAG_MOD_REPLACE;
1485 if (user_account_control & UF_SERVER_TRUST_ACCOUNT) {
1486 ret = samdb_msg_add_string(ldb, msg, msg,
1487 "isCriticalSystemObject", "TRUE");
1488 if (ret != LDB_SUCCESS) {
1491 el2 = ldb_msg_find_element(msg, "isCriticalSystemObject");
1492 el2->flags = LDB_FLAG_MOD_REPLACE;
1494 /* DCs have primaryGroupID of DOMAIN_RID_DCS */
1495 if (!ldb_msg_find_element(msg, "primaryGroupID")) {
1496 ret = samdb_msg_add_uint(ldb, msg, msg,
1497 "primaryGroupID", DOMAIN_RID_DCS);
1498 if (ret != LDB_SUCCESS) {
1501 el2 = ldb_msg_find_element(msg, "primaryGroupID");
1502 el2->flags = LDB_FLAG_MOD_REPLACE;
1506 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1507 return LDB_ERR_UNWILLING_TO_PERFORM;
1510 el = ldb_msg_find_element(req->op.mod.message, "member");
1511 if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1512 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1513 req->op.mod.message);
1515 ret = samldb_member_check(ac);
1516 if (ret != LDB_SUCCESS) {
1521 return ldb_next_request(module, req);
1525 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
1527 struct samldb_ctx *ac;
1530 if (ldb_dn_is_special(req->op.del.dn)) {
1531 /* do not manipulate our control entries */
1532 return ldb_next_request(module, req);
1535 ac = samldb_ctx_init(module, req);
1537 return ldb_operr(ldb_module_get_ctx(module));
1539 ret = samldb_prim_group_users_check(ac);
1540 if (ret != LDB_SUCCESS) {
1544 return ldb_next_request(module, req);
1547 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
1549 struct ldb_context *ldb = ldb_module_get_ctx(module);
1550 struct dsdb_fsmo_extended_op *exop;
1553 exop = talloc_get_type(req->op.extended.data, struct dsdb_fsmo_extended_op);
1555 ldb_debug(ldb, LDB_DEBUG_FATAL, "samldb_extended_allocate_rid_pool: invalid extended data\n");
1556 return LDB_ERR_PROTOCOL_ERROR;
1559 ret = ridalloc_allocate_rid_pool_fsmo(module, exop);
1560 if (ret != LDB_SUCCESS) {
1564 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
1567 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
1569 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
1570 return samldb_extended_allocate_rid_pool(module, req);
1573 return ldb_next_request(module, req);
1577 _PUBLIC_ const struct ldb_module_ops ldb_samldb_module_ops = {
1580 .modify = samldb_modify,
1581 .del = samldb_delete,
1582 .extended = samldb_extended