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 /* used in "samldb_find_for_defaultObjectCategory" */
63 struct ldb_dn *dn, *res_dn;
65 /* all the async steps necessary to complete the operation */
66 struct samldb_step *steps;
67 struct samldb_step *curstep;
69 /* If someone set an ares to forward controls and response back to the caller */
70 struct ldb_reply *ares;
73 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
74 struct ldb_request *req)
76 struct ldb_context *ldb;
77 struct samldb_ctx *ac;
79 ldb = ldb_module_get_ctx(module);
81 ac = talloc_zero(req, struct samldb_ctx);
93 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
95 struct samldb_step *step, *stepper;
97 step = talloc_zero(ac, struct samldb_step);
99 return ldb_oom(ldb_module_get_ctx(ac->module));
104 if (ac->steps == NULL) {
108 if (ac->curstep == NULL)
109 return ldb_operr(ldb_module_get_ctx(ac->module));
110 for (stepper = ac->curstep; stepper->next != NULL;
111 stepper = stepper->next);
112 stepper->next = step;
118 static int samldb_first_step(struct samldb_ctx *ac)
120 if (ac->steps == NULL) {
121 return ldb_operr(ldb_module_get_ctx(ac->module));
124 ac->curstep = ac->steps;
125 return ac->curstep->fn(ac);
128 static int samldb_next_step(struct samldb_ctx *ac)
130 if (ac->curstep->next) {
131 ac->curstep = ac->curstep->next;
132 return ac->curstep->fn(ac);
135 /* we exit the samldb module here */
136 /* If someone set an ares to forward controls and response back to the caller, use them */
138 return ldb_module_done(ac->req, ac->ares->controls,
139 ac->ares->response, LDB_SUCCESS);
141 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
146 /* sAMAccountName handling */
148 static int samldb_generate_sAMAccountName(struct ldb_context *ldb, struct ldb_message *msg)
152 /* Format: $000000-000000000000 */
154 name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
155 (unsigned int)generate_random(),
156 (unsigned int)generate_random(),
157 (unsigned int)generate_random());
161 return ldb_msg_add_steal_string(msg, "sAMAccountName", name);
164 static int samldb_check_sAMAccountName(struct samldb_ctx *ac)
166 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
170 if (ldb_msg_find_element(ac->msg, "sAMAccountName") == NULL) {
171 ret = samldb_generate_sAMAccountName(ldb, ac->msg);
172 if (ret != LDB_SUCCESS) {
177 name = ldb_msg_find_attr_as_string(ac->msg, "sAMAccountName", NULL);
179 return ldb_operr(ldb);
182 ret = samdb_search_count(ldb, NULL, "(sAMAccountName=%s)",
183 ldb_binary_encode_string(ac, name));
184 if ((ret < 0) || (ret > 1)) {
185 return ldb_operr(ldb);
188 return LDB_ERR_ENTRY_ALREADY_EXISTS;
191 return samldb_next_step(ac);
194 /* sAMAccountType handling */
196 static int samldb_check_sAMAccountType(struct samldb_ctx *ac)
198 struct ldb_context *ldb;
199 unsigned int account_type;
200 unsigned int group_type;
204 ldb = ldb_module_get_ctx(ac->module);
206 /* make sure sAMAccountType is not specified */
207 if (ldb_msg_find_element(ac->msg, "sAMAccountType") != NULL) {
208 ldb_asprintf_errstring(ldb,
209 "sAMAccountType must not be specified!");
210 return LDB_ERR_UNWILLING_TO_PERFORM;
213 if (strcmp("user", ac->type) == 0) {
214 uac = samdb_result_uint(ac->msg, "userAccountControl", 0);
216 ldb_asprintf_errstring(ldb,
217 "userAccountControl invalid!");
218 return LDB_ERR_UNWILLING_TO_PERFORM;
220 account_type = ds_uf2atype(uac);
221 ret = samdb_msg_add_uint(ldb,
225 if (ret != LDB_SUCCESS) {
229 } else if (strcmp("group", ac->type) == 0) {
230 group_type = samdb_result_uint(ac->msg, "groupType", 0);
231 if (group_type == 0) {
232 ldb_asprintf_errstring(ldb,
233 "groupType invalid!\n");
234 return LDB_ERR_UNWILLING_TO_PERFORM;
236 account_type = ds_gtype2atype(group_type);
237 ret = samdb_msg_add_uint(ldb,
241 if (ret != LDB_SUCCESS) {
247 return samldb_next_step(ac);
250 /* primaryGroupID handling */
252 static int samldb_check_primaryGroupID(struct samldb_ctx *ac)
254 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
255 struct ldb_dn *prim_group_dn;
260 rid = samdb_result_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
261 if (rid == (uint32_t) -1) {
262 uint32_t uac = samdb_result_uint(ac->msg, "userAccountControl",
265 rid = ds_uf2prim_group_rid(uac);
267 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
268 "primaryGroupID", rid);
269 if (ret != LDB_SUCCESS) {
272 } else if (!ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
273 ldb_set_errstring(ldb,
274 "The primary group isn't settable on add operations!");
275 return LDB_ERR_UNWILLING_TO_PERFORM;
278 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
280 return ldb_operr(ldb);
283 prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
284 ldap_encode_ndr_dom_sid(ac, sid));
285 if (prim_group_dn == NULL) {
286 ldb_asprintf_errstring(ldb,
287 "Failed to find primary group with RID %u!",
289 return LDB_ERR_UNWILLING_TO_PERFORM;
292 return samldb_next_step(ac);
296 static bool samldb_msg_add_sid(struct ldb_message *msg,
298 const struct dom_sid *sid)
301 enum ndr_err_code ndr_err;
303 ndr_err = ndr_push_struct_blob(&v, msg, sid,
304 (ndr_push_flags_fn_t)ndr_push_dom_sid);
305 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
308 return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
312 /* allocate a SID using our RID Set */
313 static int samldb_allocate_sid(struct samldb_ctx *ac)
317 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
320 ret = ridalloc_allocate_rid(ac->module, &rid);
321 if (ret != LDB_SUCCESS) {
325 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
327 return ldb_module_oom(ac->module);
330 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
331 return ldb_operr(ldb);
334 return samldb_next_step(ac);
338 see if a krbtgt_number is available
340 static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac, unsigned krbtgt_number)
342 TALLOC_CTX *tmp_ctx = talloc_new(ac);
343 struct ldb_result *res;
344 const char *attrs[] = { NULL };
347 ret = dsdb_module_search(ac->module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE,
348 attrs, DSDB_FLAG_NEXT_MODULE,
349 "msDC-SecondaryKrbTgtNumber=%u", krbtgt_number);
350 if (ret == LDB_SUCCESS && res->count == 0) {
351 talloc_free(tmp_ctx);
354 talloc_free(tmp_ctx);
358 /* special handling for add in RODC join */
359 static int samldb_rodc_add(struct samldb_ctx *ac)
361 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
362 unsigned krbtgt_number, i_start, i;
366 /* find a unused msDC-SecondaryKrbTgtNumber */
367 i_start = generate_random() & 0xFFFF;
372 for (i=i_start; i<=0xFFFF; i++) {
373 if (samldb_krbtgtnumber_available(ac, i)) {
378 for (i=1; i<i_start; i++) {
379 if (samldb_krbtgtnumber_available(ac, i)) {
385 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
386 "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
387 W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
388 return LDB_ERR_OTHER;
391 ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber", LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
392 if (ret != LDB_SUCCESS) {
393 return ldb_operr(ldb);
396 ret = ldb_msg_add_fmt(ac->msg, "msDS-SecondaryKrbTgtNumber", "%u", krbtgt_number);
397 if (ret != LDB_SUCCESS) {
398 return ldb_operr(ldb);
401 ret = ldb_msg_add_fmt(ac->msg, "sAMAccountName", "krbtgt_%u", krbtgt_number);
402 if (ret != LDB_SUCCESS) {
403 return ldb_operr(ldb);
406 newpass = generate_random_password(ac, 128, 255);
407 if (newpass == NULL) {
408 return ldb_operr(ldb);
411 ret = ldb_msg_add_steal_string(ac->msg, "clearTextPassword", newpass);
412 if (ret != LDB_SUCCESS) {
413 return ldb_operr(ldb);
416 return samldb_next_step(ac);
419 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
421 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
422 struct ldb_result *res;
423 const char *no_attrs[] = { NULL };
428 ret = dsdb_module_search(ac->module, ac, &res,
429 ac->dn, LDB_SCOPE_BASE, no_attrs,
430 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT | DSDB_FLAG_NEXT_MODULE,
431 "(objectClass=classSchema)");
432 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
433 /* Don't be pricky when the DN doesn't exist if we have the */
434 /* RELAX control specified */
435 if (ldb_request_get_control(ac->req,
436 LDB_CONTROL_RELAX_OID) == NULL) {
437 ldb_set_errstring(ldb,
438 "samldb_find_defaultObjectCategory: "
439 "Invalid DN for 'defaultObjectCategory'!");
440 return LDB_ERR_CONSTRAINT_VIOLATION;
443 if ((ret != LDB_ERR_NO_SUCH_OBJECT) && (ret != LDB_SUCCESS)) {
449 return samldb_next_step(ac);
453 * msDS-IntId attributeSchema attribute handling
454 * during LDB_ADD request processing
456 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
461 uint32_t system_flags;
462 struct ldb_context *ldb;
463 struct ldb_result *ldb_res;
464 struct ldb_dn *schema_dn;
466 ldb = ldb_module_get_ctx(ac->module);
467 schema_dn = ldb_get_schema_basedn(ldb);
469 /* replicated update should always go through */
470 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
474 /* msDS-IntId is handled by system and should never be
475 * passed by clients */
476 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
477 return LDB_ERR_UNWILLING_TO_PERFORM;
480 /* do not generate msDS-IntId if Relax control is passed */
481 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
485 /* check Functional Level */
486 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
490 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
491 system_flags = ldb_msg_find_attr_as_uint(ac->msg, "systemFlags", 0);
492 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
496 /* Generate new value for msDs-IntId
497 * Value should be in 0x80000000..0xBFFFFFFF range */
498 msds_intid = generate_random() % 0X3FFFFFFF;
499 msds_intid += 0x80000000;
501 /* probe id values until unique one is found */
504 if (msds_intid > 0xBFFFFFFF) {
505 msds_intid = 0x80000001;
508 ret = dsdb_module_search(ac->module, ac,
510 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
511 DSDB_FLAG_NEXT_MODULE,
512 "(msDS-IntId=%d)", msds_intid);
513 if (ret != LDB_SUCCESS) {
514 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
515 __location__": Searching for msDS-IntId=%d failed - %s\n",
518 return ldb_operr(ldb);
520 id_exists = (ldb_res->count > 0);
522 talloc_free(ldb_res);
525 return ldb_msg_add_fmt(ac->msg, "msDS-IntId", "%d", msds_intid);
530 * samldb_add_entry (async)
533 static int samldb_add_entry_callback(struct ldb_request *req,
534 struct ldb_reply *ares)
536 struct ldb_context *ldb;
537 struct samldb_ctx *ac;
540 ac = talloc_get_type(req->context, struct samldb_ctx);
541 ldb = ldb_module_get_ctx(ac->module);
544 return ldb_module_done(ac->req, NULL, NULL,
545 LDB_ERR_OPERATIONS_ERROR);
548 if (ares->type == LDB_REPLY_REFERRAL) {
549 return ldb_module_send_referral(ac->req, ares->referral);
552 if (ares->error != LDB_SUCCESS) {
553 return ldb_module_done(ac->req, ares->controls,
554 ares->response, ares->error);
556 if (ares->type != LDB_REPLY_DONE) {
557 ldb_set_errstring(ldb,
558 "Invalid reply type!\n");
559 return ldb_module_done(ac->req, NULL, NULL,
560 LDB_ERR_OPERATIONS_ERROR);
563 /* The caller may wish to get controls back from the add */
564 ac->ares = talloc_steal(ac, ares);
566 ret = samldb_next_step(ac);
567 if (ret != LDB_SUCCESS) {
568 return ldb_module_done(ac->req, NULL, NULL, ret);
573 static int samldb_add_entry(struct samldb_ctx *ac)
575 struct ldb_context *ldb;
576 struct ldb_request *req;
579 ldb = ldb_module_get_ctx(ac->module);
581 ret = ldb_build_add_req(&req, ldb, ac,
584 ac, samldb_add_entry_callback,
586 LDB_REQ_SET_LOCATION(req);
587 if (ret != LDB_SUCCESS) {
591 return ldb_next_request(ac->module, req);
595 * return true if msg carries an attributeSchema that is intended to be RODC
596 * filtered but is also a system-critical attribute.
598 static bool check_rodc_critical_attribute(struct ldb_message *msg)
600 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
602 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
603 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
604 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE | SEARCH_FLAG_CONFIDENTIAL);
606 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
607 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
615 static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
617 struct ldb_context *ldb;
618 struct loadparm_context *lp_ctx;
619 enum sid_generator sid_generator;
621 struct ldb_control *rodc_control;
624 ldb = ldb_module_get_ctx(ac->module);
626 /* Add informations for the different account types */
628 if (strcmp(ac->type, "user") == 0) {
629 ret = samdb_find_or_add_attribute(ldb, ac->msg,
630 "userAccountControl", "546");
631 if (ret != LDB_SUCCESS) return ret;
632 ret = samdb_find_or_add_attribute(ldb, ac->msg,
634 if (ret != LDB_SUCCESS) return ret;
635 ret = samdb_find_or_add_attribute(ldb, ac->msg,
637 if (ret != LDB_SUCCESS) return ret;
638 ret = samdb_find_or_add_attribute(ldb, ac->msg,
640 if (ret != LDB_SUCCESS) return ret;
641 ret = samdb_find_or_add_attribute(ldb, ac->msg,
642 "badPasswordTime", "0");
643 if (ret != LDB_SUCCESS) return ret;
644 ret = samdb_find_or_add_attribute(ldb, ac->msg,
646 if (ret != LDB_SUCCESS) return ret;
647 ret = samdb_find_or_add_attribute(ldb, ac->msg,
649 if (ret != LDB_SUCCESS) return ret;
650 ret = samdb_find_or_add_attribute(ldb, ac->msg,
652 if (ret != LDB_SUCCESS) return ret;
653 ret = samdb_find_or_add_attribute(ldb, ac->msg,
654 "accountExpires", "9223372036854775807");
655 if (ret != LDB_SUCCESS) return ret;
656 ret = samdb_find_or_add_attribute(ldb, ac->msg,
658 if (ret != LDB_SUCCESS) return ret;
659 } else if (strcmp(ac->type, "group") == 0) {
660 ret = samdb_find_or_add_attribute(ldb, ac->msg,
661 "groupType", "-2147483646");
662 if (ret != LDB_SUCCESS) return ret;
663 } else if (strcmp(ac->type, "classSchema") == 0) {
664 const struct ldb_val *rdn_value, *def_obj_cat_val;
666 ret = samdb_find_or_add_attribute(ldb, ac->msg,
668 if (ret != LDB_SUCCESS) return ret;
670 /* do not allow to mark an attributeSchema as RODC filtered if it
671 * is system-critical */
672 if (check_rodc_critical_attribute(ac->msg)) {
673 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
674 ldb_dn_get_linearized(ac->msg->dn));
675 return LDB_ERR_UNWILLING_TO_PERFORM;
679 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
680 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
681 /* the RDN has prefix "CN" */
682 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
683 samdb_cn_to_lDAPDisplayName(ac,
684 (const char *) rdn_value->data));
685 if (ret != LDB_SUCCESS) {
691 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
694 guid = GUID_random();
695 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
696 if (ret != LDB_SUCCESS) {
702 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
703 "defaultObjectCategory");
704 if (def_obj_cat_val != NULL) {
705 /* "defaultObjectCategory" has been set by the caller.
706 * Do some checks for consistency.
707 * NOTE: The real constraint check (that
708 * 'defaultObjectCategory' is the DN of the new
709 * objectclass or any parent of it) is still incomplete.
710 * For now we say that 'defaultObjectCategory' is valid
711 * if it exists and it is of objectclass "classSchema".
713 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
714 if (ac->dn == NULL) {
715 ldb_set_errstring(ldb,
716 "Invalid DN for 'defaultObjectCategory'!");
717 return LDB_ERR_CONSTRAINT_VIOLATION;
720 /* "defaultObjectCategory" has not been set by the
721 * caller. Use the entry DN for it. */
722 ac->dn = ac->msg->dn;
724 ret = samdb_msg_add_string(ldb, ac, ac->msg,
725 "defaultObjectCategory",
726 ldb_dn_get_linearized(ac->dn));
727 if (ret != LDB_SUCCESS) {
733 ret = samldb_add_step(ac, samldb_add_entry);
734 if (ret != LDB_SUCCESS) return ret;
736 /* Now perform the checks for the 'defaultObjectCategory'. The
737 * lookup DN was already saved in "ac->dn" */
738 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
739 if (ret != LDB_SUCCESS) return ret;
741 return samldb_first_step(ac);
742 } else if (strcmp(ac->type, "attributeSchema") == 0) {
743 const struct ldb_val *rdn_value;
744 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
745 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
746 /* the RDN has prefix "CN" */
747 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
748 samdb_cn_to_lDAPDisplayName(ac,
749 (const char *) rdn_value->data));
750 if (ret != LDB_SUCCESS) {
756 /* do not allow to mark an attributeSchema as RODC filtered if it
757 * is system-critical */
758 if (check_rodc_critical_attribute(ac->msg)) {
759 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical attribute with RODC filtering",
760 ldb_dn_get_linearized(ac->msg->dn));
761 return LDB_ERR_UNWILLING_TO_PERFORM;
764 ret = samdb_find_or_add_attribute(ldb, ac->msg,
765 "isSingleValued", "FALSE");
766 if (ret != LDB_SUCCESS) return ret;
768 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
771 guid = GUID_random();
772 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
773 if (ret != LDB_SUCCESS) {
779 /* handle msDS-IntID attribute */
780 ret = samldb_add_handle_msDS_IntId(ac);
781 if (ret != LDB_SUCCESS) return ret;
783 ret = samldb_add_step(ac, samldb_add_entry);
784 if (ret != LDB_SUCCESS) return ret;
786 return samldb_first_step(ac);
788 ldb_asprintf_errstring(ldb,
789 "Invalid entry type!");
790 return LDB_ERR_OPERATIONS_ERROR;
793 rodc_control = ldb_request_get_control(ac->req, LDB_CONTROL_RODC_DCPROMO_OID);
795 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
796 rodc_control->critical = false;
797 ret = samldb_add_step(ac, samldb_rodc_add);
798 if (ret != LDB_SUCCESS) return ret;
801 /* check if we have a valid sAMAccountName */
802 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
803 if (ret != LDB_SUCCESS) return ret;
805 /* check account_type/group_type */
806 ret = samldb_add_step(ac, samldb_check_sAMAccountType);
807 if (ret != LDB_SUCCESS) return ret;
809 /* check if we have a valid primary group ID */
810 if (strcmp(ac->type, "user") == 0) {
811 ret = samldb_add_step(ac, samldb_check_primaryGroupID);
812 if (ret != LDB_SUCCESS) return ret;
815 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
816 struct loadparm_context);
818 /* don't allow objectSid to be specified without the RELAX control */
819 sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
820 if (sid && !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
821 !dsdb_module_am_system(ac->module)) {
822 ldb_asprintf_errstring(ldb, "No SID may be specified in user/group creation for %s",
823 ldb_dn_get_linearized(ac->msg->dn));
824 return LDB_ERR_UNWILLING_TO_PERFORM;
828 sid_generator = lpcfg_sid_generator(lp_ctx);
829 if (sid_generator == SID_GENERATOR_INTERNAL) {
830 ret = samldb_add_step(ac, samldb_allocate_sid);
831 if (ret != LDB_SUCCESS) return ret;
835 /* finally proceed with adding the entry */
836 ret = samldb_add_step(ac, samldb_add_entry);
837 if (ret != LDB_SUCCESS) return ret;
839 return samldb_first_step(ac);
842 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
844 struct ldb_context *ldb;
848 ldb = ldb_module_get_ctx(ac->module);
850 sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
852 sid = dom_sid_parse_talloc(ac->msg,
853 (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
855 ldb_set_errstring(ldb,
856 "No valid SID found in "
857 "ForeignSecurityPrincipal CN!");
858 return LDB_ERR_CONSTRAINT_VIOLATION;
860 if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
861 return ldb_operr(ldb);
865 /* finally proceed with adding the entry */
866 ret = samldb_add_step(ac, samldb_add_entry);
867 if (ret != LDB_SUCCESS) return ret;
869 return samldb_first_step(ac);
872 static int samldb_schema_info_update(struct samldb_ctx *ac)
875 struct ldb_context *ldb;
876 struct dsdb_schema *schema;
878 /* replicated update should always go through */
879 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
883 /* do not update schemaInfo during provisioning */
884 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
888 ldb = ldb_module_get_ctx(ac->module);
889 schema = dsdb_get_schema(ldb, NULL);
891 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
892 "samldb_schema_info_update: no dsdb_schema loaded");
893 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
894 return ldb_operr(ldb);
897 werr = dsdb_module_schema_info_update(ac->module, schema, DSDB_FLAG_NEXT_MODULE);
898 if (!W_ERROR_IS_OK(werr)) {
899 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
900 "samldb_schema_info_update: "
901 "dsdb_module_schema_info_update failed with %s",
903 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
904 return ldb_operr(ldb);
911 static int samldb_prim_group_change(struct samldb_ctx *ac)
913 struct ldb_context *ldb;
914 const char * attrs[] = { "primaryGroupID", "memberOf", NULL };
915 struct ldb_result *res;
916 struct ldb_message_element *el;
917 struct ldb_message *msg;
920 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
923 ldb = ldb_module_get_ctx(ac->module);
925 /* Fetch informations from the existing object */
927 ret = ldb_search(ldb, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
929 if (ret != LDB_SUCCESS) {
933 /* Finds out the DN of the old primary group */
935 rid = samdb_result_uint(res->msgs[0], "primaryGroupID", (uint32_t) -1);
936 if (rid == (uint32_t) -1) {
937 /* User objects do always have a mandatory "primaryGroupID"
938 * attribute. If this doesn't exist then the object is of the
939 * wrong type. This is the exact Windows error code */
940 return LDB_ERR_OBJECT_CLASS_VIOLATION;
943 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
945 return ldb_operr(ldb);
948 prev_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
949 ldap_encode_ndr_dom_sid(ac, sid));
950 if (prev_prim_group_dn == NULL) {
951 return ldb_operr(ldb);
954 /* Finds out the DN of the new primary group */
956 rid = samdb_result_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
957 if (rid == (uint32_t) -1) {
958 /* we aren't affected of any primary group change */
962 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
964 return ldb_operr(ldb);
967 new_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
968 ldap_encode_ndr_dom_sid(ac, sid));
969 if (new_prim_group_dn == NULL) {
970 /* Here we know if the specified new primary group candidate is
972 return LDB_ERR_UNWILLING_TO_PERFORM;
975 /* Only update the "member" attributes when we really do have a change */
976 if (ldb_dn_compare(new_prim_group_dn, prev_prim_group_dn) != 0) {
977 /* We need to be already a normal member of the new primary
978 * group in order to be successful. */
979 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
980 ldb_dn_get_linearized(new_prim_group_dn));
982 return LDB_ERR_UNWILLING_TO_PERFORM;
985 /* Remove the "member" attribute on the new primary group */
986 msg = talloc_zero(ac, struct ldb_message);
987 msg->dn = new_prim_group_dn;
989 ret = samdb_msg_add_delval(ldb, ac, msg, "member",
990 ldb_dn_get_linearized(ac->msg->dn));
991 if (ret != LDB_SUCCESS) {
995 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
996 if (ret != LDB_SUCCESS) {
1000 /* Add a "member" attribute for the previous primary group */
1001 msg = talloc_zero(ac, struct ldb_message);
1002 msg->dn = prev_prim_group_dn;
1004 ret = samdb_msg_add_addval(ldb, ac, msg, "member",
1005 ldb_dn_get_linearized(ac->msg->dn));
1006 if (ret != LDB_SUCCESS) {
1010 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
1011 if (ret != LDB_SUCCESS) {
1020 static int samldb_member_check(struct samldb_ctx *ac)
1022 struct ldb_context *ldb;
1023 struct ldb_message_element *el;
1024 struct ldb_dn *member_dn, *group_dn;
1025 uint32_t prim_group_rid;
1026 struct dom_sid *sid;
1029 ldb = ldb_module_get_ctx(ac->module);
1031 el = ldb_msg_find_element(ac->msg, "member");
1033 /* we aren't affected */
1037 for (i = 0; i < el->num_values; i++) {
1038 /* Denies to add "member"s to groups which are primary ones
1040 member_dn = ldb_dn_from_ldb_val(ac, ldb, &el->values[i]);
1041 if (!ldb_dn_validate(member_dn)) {
1042 return ldb_operr(ldb);
1045 prim_group_rid = samdb_search_uint(ldb, ac, (uint32_t) -1,
1046 member_dn, "primaryGroupID",
1048 if (prim_group_rid == (uint32_t) -1) {
1049 /* the member hasn't to be a user account -> therefore
1050 * no check needed in this case. */
1054 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1057 return ldb_operr(ldb);
1060 group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
1061 ldap_encode_ndr_dom_sid(ac, sid));
1062 if (group_dn == NULL) {
1063 return ldb_operr(ldb);
1066 if (ldb_dn_compare(group_dn, ac->msg->dn) == 0) {
1067 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1076 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
1078 struct ldb_context *ldb;
1079 struct samldb_ctx *ac;
1082 ldb = ldb_module_get_ctx(module);
1083 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
1085 /* do not manipulate our control entries */
1086 if (ldb_dn_is_special(req->op.add.message->dn)) {
1087 return ldb_next_request(module, req);
1090 ac = samldb_ctx_init(module, req);
1092 return ldb_operr(ldb);
1095 /* build the new msg */
1096 ac->msg = ldb_msg_copy(ac, ac->req->op.add.message);
1099 ldb_debug(ldb, LDB_DEBUG_FATAL,
1100 "samldb_add: ldb_msg_copy failed!\n");
1101 return ldb_operr(ldb);
1104 if (samdb_find_attribute(ldb, ac->msg,
1105 "objectclass", "user") != NULL) {
1106 return samldb_fill_object(ac, "user");
1109 if (samdb_find_attribute(ldb, ac->msg,
1110 "objectclass", "group") != NULL) {
1111 return samldb_fill_object(ac, "group");
1114 /* perhaps a foreignSecurityPrincipal? */
1115 if (samdb_find_attribute(ldb, ac->msg,
1117 "foreignSecurityPrincipal") != NULL) {
1118 return samldb_fill_foreignSecurityPrincipal_object(ac);
1121 if (samdb_find_attribute(ldb, ac->msg,
1122 "objectclass", "classSchema") != NULL) {
1123 ret = samldb_schema_info_update(ac);
1124 if (ret != LDB_SUCCESS) {
1129 return samldb_fill_object(ac, "classSchema");
1132 if (samdb_find_attribute(ldb, ac->msg,
1133 "objectclass", "attributeSchema") != NULL) {
1134 ret = samldb_schema_info_update(ac);
1135 if (ret != LDB_SUCCESS) {
1140 return samldb_fill_object(ac, "attributeSchema");
1145 /* nothing matched, go on */
1146 return ldb_next_request(module, req);
1150 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
1152 struct ldb_context *ldb;
1153 struct samldb_ctx *ac;
1154 struct ldb_message *msg;
1155 struct ldb_message_element *el, *el2;
1157 uint32_t account_type;
1159 if (ldb_dn_is_special(req->op.mod.message->dn)) {
1160 /* do not manipulate our control entries */
1161 return ldb_next_request(module, req);
1164 ldb = ldb_module_get_ctx(module);
1166 if (ldb_msg_find_element(req->op.mod.message, "sAMAccountType") != NULL) {
1167 ldb_asprintf_errstring(ldb,
1168 "sAMAccountType must not be specified!");
1169 return LDB_ERR_UNWILLING_TO_PERFORM;
1172 /* msDS-IntId is not allowed to be modified
1173 * except when modification comes from replication */
1174 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
1175 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1176 return LDB_ERR_CONSTRAINT_VIOLATION;
1180 ac = samldb_ctx_init(module, req);
1182 return ldb_operr(ldb);
1185 /* TODO: do not modify original request, create a new one */
1187 el = ldb_msg_find_element(req->op.mod.message, "groupType");
1188 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1189 uint32_t group_type;
1191 req->op.mod.message = msg = ldb_msg_copy_shallow(req,
1192 req->op.mod.message);
1194 group_type = strtoul((const char *)el->values[0].data, NULL, 0);
1195 account_type = ds_gtype2atype(group_type);
1196 ret = samdb_msg_add_uint(ldb, msg, msg,
1199 if (ret != LDB_SUCCESS) {
1202 el2 = ldb_msg_find_element(msg, "sAMAccountType");
1203 el2->flags = LDB_FLAG_MOD_REPLACE;
1205 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1206 return LDB_ERR_UNWILLING_TO_PERFORM;
1209 el = ldb_msg_find_element(req->op.mod.message, "primaryGroupID");
1210 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1211 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1212 req->op.mod.message);
1214 ret = samldb_prim_group_change(ac);
1215 if (ret != LDB_SUCCESS) {
1219 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1220 return LDB_ERR_UNWILLING_TO_PERFORM;
1223 el = ldb_msg_find_element(req->op.mod.message, "userAccountControl");
1224 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1225 uint32_t user_account_control;
1227 req->op.mod.message = msg = ldb_msg_copy_shallow(req,
1228 req->op.mod.message);
1230 user_account_control = strtoul((const char *)el->values[0].data,
1232 account_type = ds_uf2atype(user_account_control);
1233 ret = samdb_msg_add_uint(ldb, msg, msg,
1236 if (ret != LDB_SUCCESS) {
1239 el2 = ldb_msg_find_element(msg, "sAMAccountType");
1240 el2->flags = LDB_FLAG_MOD_REPLACE;
1242 if (user_account_control & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1243 ret = samdb_msg_add_string(ldb, msg, msg,
1244 "isCriticalSystemObject", "TRUE");
1245 if (ret != LDB_SUCCESS) {
1248 el2 = ldb_msg_find_element(msg, "isCriticalSystemObject");
1249 el2->flags = LDB_FLAG_MOD_REPLACE;
1252 if (!ldb_msg_find_element(msg, "primaryGroupID")) {
1253 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1255 ret = samdb_msg_add_uint(ldb, msg, msg,
1256 "primaryGroupID", rid);
1257 if (ret != LDB_SUCCESS) {
1260 el2 = ldb_msg_find_element(msg,
1262 el2->flags = LDB_FLAG_MOD_REPLACE;
1265 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1266 return LDB_ERR_UNWILLING_TO_PERFORM;
1269 el = ldb_msg_find_element(req->op.mod.message, "member");
1270 if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1271 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1272 req->op.mod.message);
1274 ret = samldb_member_check(ac);
1275 if (ret != LDB_SUCCESS) {
1280 return ldb_next_request(module, req);
1285 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
1287 struct ldb_context *ldb;
1288 struct dom_sid *sid;
1293 ldb = ldb_module_get_ctx(ac->module);
1295 /* Finds out the SID/RID of the SAM object */
1296 sid = samdb_search_dom_sid(ldb, ac, ac->req->op.del.dn, "objectSid",
1299 /* No SID - it might not be a SAM object - therefore ok */
1302 status = dom_sid_split_rid(ac, sid, NULL, &rid);
1303 if (!NT_STATUS_IS_OK(status)) {
1304 return ldb_operr(ldb);
1307 /* Special object (security principal?) */
1311 /* Deny delete requests from groups which are primary ones */
1312 count = samdb_search_count(ldb, NULL,
1313 "(&(primaryGroupID=%u)(objectClass=user))",
1316 return ldb_operr(ldb);
1319 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1325 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
1327 struct samldb_ctx *ac;
1330 if (ldb_dn_is_special(req->op.del.dn)) {
1331 /* do not manipulate our control entries */
1332 return ldb_next_request(module, req);
1335 ac = samldb_ctx_init(module, req);
1337 return ldb_operr(ldb_module_get_ctx(module));
1340 ret = samldb_prim_group_users_check(ac);
1341 if (ret != LDB_SUCCESS) {
1347 return ldb_next_request(module, req);
1352 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
1354 struct ldb_context *ldb = ldb_module_get_ctx(module);
1355 struct dsdb_fsmo_extended_op *exop;
1358 exop = talloc_get_type(req->op.extended.data, struct dsdb_fsmo_extended_op);
1360 ldb_debug(ldb, LDB_DEBUG_FATAL, "samldb_extended_allocate_rid_pool: invalid extended data\n");
1361 return LDB_ERR_PROTOCOL_ERROR;
1364 ret = ridalloc_allocate_rid_pool_fsmo(module, exop);
1365 if (ret != LDB_SUCCESS) {
1369 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
1372 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
1374 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
1375 return samldb_extended_allocate_rid_pool(module, req);
1378 return ldb_next_request(module, req);
1382 _PUBLIC_ const struct ldb_module_ops ldb_samldb_module_ops = {
1385 .modify = samldb_modify,
1386 .del = samldb_delete,
1387 .extended = samldb_extended