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)
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 */
627 if (strcmp(ac->type, "user") == 0) {
628 ret = samdb_find_or_add_attribute(ldb, ac->msg,
629 "userAccountControl", "546");
630 if (ret != LDB_SUCCESS) return ret;
631 ret = samdb_find_or_add_attribute(ldb, ac->msg,
633 if (ret != LDB_SUCCESS) return ret;
634 ret = samdb_find_or_add_attribute(ldb, ac->msg,
636 if (ret != LDB_SUCCESS) return ret;
637 ret = samdb_find_or_add_attribute(ldb, ac->msg,
639 if (ret != LDB_SUCCESS) return ret;
640 ret = samdb_find_or_add_attribute(ldb, ac->msg,
641 "badPasswordTime", "0");
642 if (ret != LDB_SUCCESS) return ret;
643 ret = samdb_find_or_add_attribute(ldb, ac->msg,
645 if (ret != LDB_SUCCESS) return ret;
646 ret = samdb_find_or_add_attribute(ldb, ac->msg,
648 if (ret != LDB_SUCCESS) return ret;
649 ret = samdb_find_or_add_attribute(ldb, ac->msg,
651 if (ret != LDB_SUCCESS) return ret;
652 ret = samdb_find_or_add_attribute(ldb, ac->msg,
653 "accountExpires", "9223372036854775807");
654 if (ret != LDB_SUCCESS) return ret;
655 ret = samdb_find_or_add_attribute(ldb, ac->msg,
657 if (ret != LDB_SUCCESS) return ret;
658 } else if (strcmp(ac->type, "group") == 0) {
659 ret = samdb_find_or_add_attribute(ldb, ac->msg,
660 "groupType", "-2147483646");
661 if (ret != LDB_SUCCESS) return ret;
662 } else if (strcmp(ac->type, "classSchema") == 0) {
663 const struct ldb_val *rdn_value, *def_obj_cat_val;
665 ret = samdb_find_or_add_attribute(ldb, ac->msg,
667 if (ret != LDB_SUCCESS) return ret;
669 /* do not allow to mark an attributeSchema as RODC filtered if it
670 * is system-critical */
671 if (check_rodc_critical_attribute(ac->msg)) {
672 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
673 ldb_dn_get_linearized(ac->msg->dn));
674 return LDB_ERR_UNWILLING_TO_PERFORM;
678 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
679 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
680 /* the RDN has prefix "CN" */
681 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
682 samdb_cn_to_lDAPDisplayName(ac,
683 (const char *) rdn_value->data));
684 if (ret != LDB_SUCCESS) {
690 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
693 guid = GUID_random();
694 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
695 if (ret != LDB_SUCCESS) {
701 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
702 "defaultObjectCategory");
703 if (def_obj_cat_val != NULL) {
704 /* "defaultObjectCategory" has been set by the caller.
705 * Do some checks for consistency.
706 * NOTE: The real constraint check (that
707 * 'defaultObjectCategory' is the DN of the new
708 * objectclass or any parent of it) is still incomplete.
709 * For now we say that 'defaultObjectCategory' is valid
710 * if it exists and it is of objectclass "classSchema".
712 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
713 if (ac->dn == NULL) {
714 ldb_set_errstring(ldb,
715 "Invalid DN for 'defaultObjectCategory'!");
716 return LDB_ERR_CONSTRAINT_VIOLATION;
719 /* "defaultObjectCategory" has not been set by the
720 * caller. Use the entry DN for it. */
721 ac->dn = ac->msg->dn;
723 ret = samdb_msg_add_string(ldb, ac->msg, ac->msg,
724 "defaultObjectCategory",
725 ldb_dn_get_linearized(ac->dn));
726 if (ret != LDB_SUCCESS) {
732 ret = samldb_add_step(ac, samldb_add_entry);
733 if (ret != LDB_SUCCESS) return ret;
735 /* Now perform the checks for the 'defaultObjectCategory'. The
736 * lookup DN was already saved in "ac->dn" */
737 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
738 if (ret != LDB_SUCCESS) return ret;
740 return samldb_first_step(ac);
741 } else if (strcmp(ac->type, "attributeSchema") == 0) {
742 const struct ldb_val *rdn_value;
743 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
744 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
745 /* the RDN has prefix "CN" */
746 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
747 samdb_cn_to_lDAPDisplayName(ac->msg,
748 (const char *) rdn_value->data));
749 if (ret != LDB_SUCCESS) {
755 /* do not allow to mark an attributeSchema as RODC filtered if it
756 * is system-critical */
757 if (check_rodc_critical_attribute(ac->msg)) {
758 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical attribute with RODC filtering",
759 ldb_dn_get_linearized(ac->msg->dn));
760 return LDB_ERR_UNWILLING_TO_PERFORM;
763 ret = samdb_find_or_add_attribute(ldb, ac->msg,
764 "isSingleValued", "FALSE");
765 if (ret != LDB_SUCCESS) return ret;
767 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
770 guid = GUID_random();
771 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
772 if (ret != LDB_SUCCESS) {
778 /* handle msDS-IntID attribute */
779 ret = samldb_add_handle_msDS_IntId(ac);
780 if (ret != LDB_SUCCESS) return ret;
782 ret = samldb_add_step(ac, samldb_add_entry);
783 if (ret != LDB_SUCCESS) return ret;
785 return samldb_first_step(ac);
787 ldb_asprintf_errstring(ldb,
788 "Invalid entry type!");
789 return LDB_ERR_OPERATIONS_ERROR;
792 rodc_control = ldb_request_get_control(ac->req, LDB_CONTROL_RODC_DCPROMO_OID);
794 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
795 rodc_control->critical = false;
796 ret = samldb_add_step(ac, samldb_rodc_add);
797 if (ret != LDB_SUCCESS) return ret;
800 /* check if we have a valid sAMAccountName */
801 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
802 if (ret != LDB_SUCCESS) return ret;
804 /* check account_type/group_type */
805 ret = samldb_add_step(ac, samldb_check_sAMAccountType);
806 if (ret != LDB_SUCCESS) return ret;
808 /* check if we have a valid primary group ID */
809 if (strcmp(ac->type, "user") == 0) {
810 ret = samldb_add_step(ac, samldb_check_primaryGroupID);
811 if (ret != LDB_SUCCESS) return ret;
814 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
815 struct loadparm_context);
817 /* don't allow objectSid to be specified without the RELAX control */
818 sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
819 if (sid && !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
820 !dsdb_module_am_system(ac->module)) {
821 ldb_asprintf_errstring(ldb, "No SID may be specified in user/group creation for %s",
822 ldb_dn_get_linearized(ac->msg->dn));
823 return LDB_ERR_UNWILLING_TO_PERFORM;
827 sid_generator = lpcfg_sid_generator(lp_ctx);
828 if (sid_generator == SID_GENERATOR_INTERNAL) {
829 ret = samldb_add_step(ac, samldb_allocate_sid);
830 if (ret != LDB_SUCCESS) return ret;
834 /* finally proceed with adding the entry */
835 ret = samldb_add_step(ac, samldb_add_entry);
836 if (ret != LDB_SUCCESS) return ret;
838 return samldb_first_step(ac);
841 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
843 struct ldb_context *ldb;
847 ldb = ldb_module_get_ctx(ac->module);
849 sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
851 sid = dom_sid_parse_talloc(ac->msg,
852 (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
854 ldb_set_errstring(ldb,
855 "No valid SID found in "
856 "ForeignSecurityPrincipal CN!");
857 return LDB_ERR_CONSTRAINT_VIOLATION;
859 if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
860 return ldb_operr(ldb);
864 /* finally proceed with adding the entry */
865 ret = samldb_add_step(ac, samldb_add_entry);
866 if (ret != LDB_SUCCESS) return ret;
868 return samldb_first_step(ac);
871 static int samldb_schema_info_update(struct samldb_ctx *ac)
874 struct ldb_context *ldb;
875 struct dsdb_schema *schema;
877 /* replicated update should always go through */
878 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
882 /* do not update schemaInfo during provisioning */
883 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
887 ldb = ldb_module_get_ctx(ac->module);
888 schema = dsdb_get_schema(ldb, NULL);
890 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
891 "samldb_schema_info_update: no dsdb_schema loaded");
892 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
893 return ldb_operr(ldb);
896 werr = dsdb_module_schema_info_update(ac->module, schema, DSDB_FLAG_NEXT_MODULE);
897 if (!W_ERROR_IS_OK(werr)) {
898 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
899 "samldb_schema_info_update: "
900 "dsdb_module_schema_info_update failed with %s",
902 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
903 return ldb_operr(ldb);
910 static int samldb_prim_group_change(struct samldb_ctx *ac)
912 struct ldb_context *ldb;
913 const char * attrs[] = { "primaryGroupID", "memberOf", NULL };
914 struct ldb_result *res;
915 struct ldb_message_element *el;
916 struct ldb_message *msg;
919 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
922 ldb = ldb_module_get_ctx(ac->module);
924 /* Fetch informations from the existing object */
926 ret = ldb_search(ldb, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
928 if (ret != LDB_SUCCESS) {
932 /* Finds out the DN of the old primary group */
934 rid = samdb_result_uint(res->msgs[0], "primaryGroupID", (uint32_t) -1);
935 if (rid == (uint32_t) -1) {
936 /* User objects do always have a mandatory "primaryGroupID"
937 * attribute. If this doesn't exist then the object is of the
938 * wrong type. This is the exact Windows error code */
939 return LDB_ERR_OBJECT_CLASS_VIOLATION;
942 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
944 return ldb_operr(ldb);
947 prev_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
948 ldap_encode_ndr_dom_sid(ac, sid));
949 if (prev_prim_group_dn == NULL) {
950 return ldb_operr(ldb);
953 /* Finds out the DN of the new primary group */
955 rid = samdb_result_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
956 if (rid == (uint32_t) -1) {
957 /* we aren't affected of any primary group change */
961 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
963 return ldb_operr(ldb);
966 new_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
967 ldap_encode_ndr_dom_sid(ac, sid));
968 if (new_prim_group_dn == NULL) {
969 /* Here we know if the specified new primary group candidate is
971 return LDB_ERR_UNWILLING_TO_PERFORM;
974 /* Only update the "member" attributes when we really do have a change */
975 if (ldb_dn_compare(new_prim_group_dn, prev_prim_group_dn) != 0) {
976 /* We need to be already a normal member of the new primary
977 * group in order to be successful. */
978 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
979 ldb_dn_get_linearized(new_prim_group_dn));
981 return LDB_ERR_UNWILLING_TO_PERFORM;
984 /* Remove the "member" attribute on the new primary group */
985 msg = talloc_zero(ac, struct ldb_message);
986 msg->dn = new_prim_group_dn;
988 ret = samdb_msg_add_delval(ldb, ac, msg, "member",
989 ldb_dn_get_linearized(ac->msg->dn));
990 if (ret != LDB_SUCCESS) {
994 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
995 if (ret != LDB_SUCCESS) {
999 /* Add a "member" attribute for the previous primary group */
1000 msg = talloc_zero(ac, struct ldb_message);
1001 msg->dn = prev_prim_group_dn;
1003 ret = samdb_msg_add_addval(ldb, ac, msg, "member",
1004 ldb_dn_get_linearized(ac->msg->dn));
1005 if (ret != LDB_SUCCESS) {
1009 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
1010 if (ret != LDB_SUCCESS) {
1019 static int samldb_member_check(struct samldb_ctx *ac)
1021 struct ldb_context *ldb;
1022 struct ldb_message_element *el;
1023 struct ldb_dn *member_dn, *group_dn;
1024 uint32_t prim_group_rid;
1025 struct dom_sid *sid;
1028 ldb = ldb_module_get_ctx(ac->module);
1030 el = ldb_msg_find_element(ac->msg, "member");
1032 /* we aren't affected */
1036 for (i = 0; i < el->num_values; i++) {
1037 /* Denies to add "member"s to groups which are primary ones
1039 member_dn = ldb_dn_from_ldb_val(ac, ldb, &el->values[i]);
1040 if (!ldb_dn_validate(member_dn)) {
1041 return ldb_operr(ldb);
1044 prim_group_rid = samdb_search_uint(ldb, ac, (uint32_t) -1,
1045 member_dn, "primaryGroupID",
1047 if (prim_group_rid == (uint32_t) -1) {
1048 /* the member hasn't to be a user account -> therefore
1049 * no check needed in this case. */
1053 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1056 return ldb_operr(ldb);
1059 group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
1060 ldap_encode_ndr_dom_sid(ac, sid));
1061 if (group_dn == NULL) {
1062 return ldb_operr(ldb);
1065 if (ldb_dn_compare(group_dn, ac->msg->dn) == 0) {
1066 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1075 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
1077 struct ldb_context *ldb;
1078 struct samldb_ctx *ac;
1081 ldb = ldb_module_get_ctx(module);
1082 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
1084 /* do not manipulate our control entries */
1085 if (ldb_dn_is_special(req->op.add.message->dn)) {
1086 return ldb_next_request(module, req);
1089 ac = samldb_ctx_init(module, req);
1091 return ldb_operr(ldb);
1094 /* build the new msg */
1095 ac->msg = ldb_msg_copy_shallow(ac, req->op.add.message);
1096 if (ac->msg == NULL) {
1098 ldb_debug(ldb, LDB_DEBUG_FATAL,
1099 "samldb_add: ldb_msg_copy_shallow failed!\n");
1100 return ldb_operr(ldb);
1103 if (samdb_find_attribute(ldb, ac->msg,
1104 "objectclass", "user") != NULL) {
1106 return samldb_fill_object(ac);
1109 if (samdb_find_attribute(ldb, ac->msg,
1110 "objectclass", "group") != NULL) {
1112 return samldb_fill_object(ac);
1115 /* perhaps a foreignSecurityPrincipal? */
1116 if (samdb_find_attribute(ldb, ac->msg,
1118 "foreignSecurityPrincipal") != NULL) {
1119 return samldb_fill_foreignSecurityPrincipal_object(ac);
1122 if (samdb_find_attribute(ldb, ac->msg,
1123 "objectclass", "classSchema") != NULL) {
1124 ret = samldb_schema_info_update(ac);
1125 if (ret != LDB_SUCCESS) {
1130 ac->type = "classSchema";
1131 return samldb_fill_object(ac);
1134 if (samdb_find_attribute(ldb, ac->msg,
1135 "objectclass", "attributeSchema") != NULL) {
1136 ret = samldb_schema_info_update(ac);
1137 if (ret != LDB_SUCCESS) {
1142 ac->type = "attributeSchema";
1143 return samldb_fill_object(ac);
1148 /* nothing matched, go on */
1149 return ldb_next_request(module, req);
1153 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
1155 struct ldb_context *ldb;
1156 struct samldb_ctx *ac;
1157 struct ldb_message_element *el, *el2;
1158 bool modified = false;
1160 uint32_t account_type;
1162 if (ldb_dn_is_special(req->op.mod.message->dn)) {
1163 /* do not manipulate our control entries */
1164 return ldb_next_request(module, req);
1167 ldb = ldb_module_get_ctx(module);
1169 if (ldb_msg_find_element(req->op.mod.message, "sAMAccountType") != NULL) {
1170 ldb_asprintf_errstring(ldb,
1171 "sAMAccountType must not be specified!");
1172 return LDB_ERR_UNWILLING_TO_PERFORM;
1175 /* msDS-IntId is not allowed to be modified
1176 * except when modification comes from replication */
1177 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
1178 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1179 return LDB_ERR_CONSTRAINT_VIOLATION;
1183 ac = samldb_ctx_init(module, req);
1185 return ldb_operr(ldb);
1188 /* build the new msg */
1189 ac->msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
1190 if (ac->msg == NULL) {
1192 ldb_debug(ldb, LDB_DEBUG_FATAL,
1193 "samldb_modify: ldb_msg_copy_shallow failed!\n");
1194 return ldb_operr(ldb);
1197 el = ldb_msg_find_element(ac->msg, "groupType");
1198 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1199 uint32_t group_type;
1203 group_type = strtoul((const char *)el->values[0].data, NULL, 0);
1204 account_type = ds_gtype2atype(group_type);
1205 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1208 if (ret != LDB_SUCCESS) {
1211 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1212 el2->flags = LDB_FLAG_MOD_REPLACE;
1214 el = ldb_msg_find_element(ac->msg, "groupType");
1215 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1216 return LDB_ERR_UNWILLING_TO_PERFORM;
1219 el = ldb_msg_find_element(ac->msg, "primaryGroupID");
1220 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1223 ret = samldb_prim_group_change(ac);
1224 if (ret != LDB_SUCCESS) {
1228 el = ldb_msg_find_element(ac->msg, "primaryGroupID");
1229 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1230 return LDB_ERR_UNWILLING_TO_PERFORM;
1233 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1234 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1235 uint32_t user_account_control;
1239 user_account_control = strtoul((const char *)el->values[0].data,
1241 account_type = ds_uf2atype(user_account_control);
1242 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1245 if (ret != LDB_SUCCESS) {
1248 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1249 el2->flags = LDB_FLAG_MOD_REPLACE;
1251 if (user_account_control & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1252 ret = samdb_msg_add_string(ldb, ac->msg, ac->msg,
1253 "isCriticalSystemObject",
1255 if (ret != LDB_SUCCESS) {
1258 el2 = ldb_msg_find_element(ac->msg,
1259 "isCriticalSystemObject");
1260 el2->flags = LDB_FLAG_MOD_REPLACE;
1263 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1264 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1266 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1267 "primaryGroupID", rid);
1268 if (ret != LDB_SUCCESS) {
1271 el2 = ldb_msg_find_element(ac->msg,
1273 el2->flags = LDB_FLAG_MOD_REPLACE;
1276 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1277 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1278 return LDB_ERR_UNWILLING_TO_PERFORM;
1281 el = ldb_msg_find_element(ac->msg, "member");
1282 if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1283 ret = samldb_member_check(ac);
1284 if (ret != LDB_SUCCESS) {
1290 struct ldb_request *child_req;
1292 /* Now perform the real modifications as a child request */
1293 ret = ldb_build_mod_req(&child_req, ldb, ac,
1296 req, dsdb_next_callback,
1298 LDB_REQ_SET_LOCATION(child_req);
1299 if (ret != LDB_SUCCESS) {
1303 return ldb_next_request(module, child_req);
1308 /* no change which interests us, go on */
1309 return ldb_next_request(module, req);
1314 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
1316 struct ldb_context *ldb;
1317 struct dom_sid *sid;
1322 ldb = ldb_module_get_ctx(ac->module);
1324 /* Finds out the SID/RID of the SAM object */
1325 sid = samdb_search_dom_sid(ldb, ac, ac->req->op.del.dn, "objectSid",
1328 /* No SID - it might not be a SAM object - therefore ok */
1331 status = dom_sid_split_rid(ac, sid, NULL, &rid);
1332 if (!NT_STATUS_IS_OK(status)) {
1333 return ldb_operr(ldb);
1336 /* Special object (security principal?) */
1340 /* Deny delete requests from groups which are primary ones */
1341 count = samdb_search_count(ldb, NULL,
1342 "(&(primaryGroupID=%u)(objectClass=user))",
1345 return ldb_operr(ldb);
1348 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1354 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
1356 struct samldb_ctx *ac;
1359 if (ldb_dn_is_special(req->op.del.dn)) {
1360 /* do not manipulate our control entries */
1361 return ldb_next_request(module, req);
1364 ac = samldb_ctx_init(module, req);
1366 return ldb_operr(ldb_module_get_ctx(module));
1369 ret = samldb_prim_group_users_check(ac);
1370 if (ret != LDB_SUCCESS) {
1376 return ldb_next_request(module, req);
1381 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
1383 struct ldb_context *ldb = ldb_module_get_ctx(module);
1384 struct dsdb_fsmo_extended_op *exop;
1387 exop = talloc_get_type(req->op.extended.data, struct dsdb_fsmo_extended_op);
1389 ldb_debug(ldb, LDB_DEBUG_FATAL, "samldb_extended_allocate_rid_pool: invalid extended data\n");
1390 return LDB_ERR_PROTOCOL_ERROR;
1393 ret = ridalloc_allocate_rid_pool_fsmo(module, exop);
1394 if (ret != LDB_SUCCESS) {
1398 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
1401 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
1403 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
1404 return samldb_extended_allocate_rid_pool(module, req);
1407 return ldb_next_request(module, req);
1411 _PUBLIC_ const struct ldb_module_ops ldb_samldb_module_ops = {
1414 .modify = samldb_modify,
1415 .del = samldb_delete,
1416 .extended = samldb_extended