2 Unix SMB/CIFS implementation.
4 interface functions for the sam database
6 Copyright (C) Andrew Tridgell 2004
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 2 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, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include "librpc/gen_ndr/ndr_netlogon.h"
25 #include "librpc/gen_ndr/ndr_misc.h"
26 #include "lib/ldb/include/ldb.h"
27 #include "system/time.h"
28 #include "system/filesys.h"
32 connect to the SAM database
33 return an opaque context pointer on success, or NULL on failure
35 struct ldb_context *samdb_connect(TALLOC_CTX *mem_ctx, struct auth_session_info *session_info)
37 struct ldb_context *ldb;
38 ldb = ldb_wrap_connect(mem_ctx, lp_sam_url(), 0, NULL);
39 if (ldb_set_opaque(ldb, "sessionInfo", session_info)) {
46 search the sam for the specified attributes in a specific domain, filter on
47 objectSid being in domain_sid.
49 int samdb_search_domain(struct ldb_context *sam_ldb,
51 const struct ldb_dn *basedn,
52 struct ldb_message ***res,
53 const char * const *attrs,
54 const struct dom_sid *domain_sid,
55 const char *format, ...) _PRINTF_ATTRIBUTE(7,8)
61 count = gendb_search_v(sam_ldb, mem_ctx, basedn,
62 res, attrs, format, ap);
68 struct dom_sid *entry_sid;
70 entry_sid = samdb_result_dom_sid(mem_ctx, (*res)[i], "objectSid");
72 if ((entry_sid == NULL) ||
73 (!dom_sid_in_domain(domain_sid, entry_sid))) {
74 /* Delete that entry from the result set */
75 (*res)[i] = (*res)[count-1];
77 talloc_free(entry_sid);
80 talloc_free(entry_sid);
88 search the sam for a single string attribute in exactly 1 record
90 const char *samdb_search_string_v(struct ldb_context *sam_ldb,
92 const struct ldb_dn *basedn,
93 const char *attr_name,
94 const char *format, va_list ap) _PRINTF_ATTRIBUTE(5,0)
97 const char *attrs[2] = { NULL, NULL };
98 struct ldb_message **res = NULL;
100 attrs[0] = attr_name;
102 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
104 DEBUG(1,("samdb: search for %s %s not single valued (count=%d)\n",
105 attr_name, format, count));
112 return samdb_result_string(res[0], attr_name, NULL);
117 search the sam for a single string attribute in exactly 1 record
119 const char *samdb_search_string(struct ldb_context *sam_ldb,
121 const struct ldb_dn *basedn,
122 const char *attr_name,
123 const char *format, ...) _PRINTF_ATTRIBUTE(5,6)
128 va_start(ap, format);
129 str = samdb_search_string_v(sam_ldb, mem_ctx, basedn, attr_name, format, ap);
135 struct ldb_dn *samdb_search_dn(struct ldb_context *sam_ldb,
137 const struct ldb_dn *basedn,
138 const char *format, ...) _PRINTF_ATTRIBUTE(4,5)
142 struct ldb_message **res = NULL;
145 va_start(ap, format);
146 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, NULL, format, ap);
149 if (count != 1) return NULL;
151 ret = talloc_steal(mem_ctx, res[0]->dn);
158 search the sam for a dom_sid attribute in exactly 1 record
160 struct dom_sid *samdb_search_dom_sid(struct ldb_context *sam_ldb,
162 const struct ldb_dn *basedn,
163 const char *attr_name,
164 const char *format, ...) _PRINTF_ATTRIBUTE(5,6)
168 struct ldb_message **res;
169 const char *attrs[2] = { NULL, NULL };
172 attrs[0] = attr_name;
174 va_start(ap, format);
175 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
178 DEBUG(1,("samdb: search for %s %s not single valued (count=%d)\n",
179 attr_name, format, count));
185 sid = samdb_result_dom_sid(mem_ctx, res[0], attr_name);
191 return the count of the number of records in the sam matching the query
193 int samdb_search_count(struct ldb_context *sam_ldb,
195 const struct ldb_dn *basedn,
196 const char *format, ...) _PRINTF_ATTRIBUTE(4,5)
199 struct ldb_message **res;
200 const char * const attrs[] = { NULL };
203 va_start(ap, format);
204 ret = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
212 search the sam for a single integer attribute in exactly 1 record
214 uint_t samdb_search_uint(struct ldb_context *sam_ldb,
216 uint_t default_value,
217 const struct ldb_dn *basedn,
218 const char *attr_name,
219 const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
223 struct ldb_message **res;
224 const char *attrs[2] = { NULL, NULL };
226 attrs[0] = attr_name;
228 va_start(ap, format);
229 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
233 return default_value;
236 return samdb_result_uint(res[0], attr_name, default_value);
240 search the sam for a single signed 64 bit integer attribute in exactly 1 record
242 int64_t samdb_search_int64(struct ldb_context *sam_ldb,
244 int64_t default_value,
245 const struct ldb_dn *basedn,
246 const char *attr_name,
247 const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
251 struct ldb_message **res;
252 const char *attrs[2] = { NULL, NULL };
254 attrs[0] = attr_name;
256 va_start(ap, format);
257 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
261 return default_value;
264 return samdb_result_int64(res[0], attr_name, default_value);
268 search the sam for multipe records each giving a single string attribute
269 return the number of matches, or -1 on error
271 int samdb_search_string_multiple(struct ldb_context *sam_ldb,
273 const struct ldb_dn *basedn,
275 const char *attr_name,
276 const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
280 const char *attrs[2] = { NULL, NULL };
281 struct ldb_message **res = NULL;
283 attrs[0] = attr_name;
285 va_start(ap, format);
286 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
293 /* make sure its single valued */
294 for (i=0;i<count;i++) {
295 if (res[i]->num_elements != 1) {
296 DEBUG(1,("samdb: search for %s %s not single valued\n",
303 *strs = talloc_array(mem_ctx, const char *, count+1);
309 for (i=0;i<count;i++) {
310 (*strs)[i] = samdb_result_string(res[i], attr_name, NULL);
312 (*strs)[count] = NULL;
318 pull a uint from a result set.
320 uint_t samdb_result_uint(struct ldb_message *msg, const char *attr, uint_t default_value)
322 return ldb_msg_find_uint(msg, attr, default_value);
326 pull a (signed) int64 from a result set.
328 int64_t samdb_result_int64(struct ldb_message *msg, const char *attr, int64_t default_value)
330 return ldb_msg_find_int64(msg, attr, default_value);
334 pull a string from a result set.
336 const char *samdb_result_string(struct ldb_message *msg, const char *attr,
337 const char *default_value)
339 return ldb_msg_find_string(msg, attr, default_value);
342 struct ldb_dn *samdb_result_dn(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
343 const char *attr, struct ldb_dn *default_value)
345 const char *string = samdb_result_string(msg, attr, NULL);
346 if (string == NULL) return default_value;
347 return ldb_dn_explode(mem_ctx, string);
351 pull a rid from a objectSid in a result set.
353 uint32_t samdb_result_rid_from_sid(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
354 const char *attr, uint32_t default_value)
359 sid = samdb_result_dom_sid(mem_ctx, msg, attr);
361 return default_value;
363 rid = sid->sub_auths[sid->num_auths-1];
369 pull a dom_sid structure from a objectSid in a result set.
371 struct dom_sid *samdb_result_dom_sid(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
374 const struct ldb_val *v;
377 v = ldb_msg_find_ldb_val(msg, attr);
381 sid = talloc(mem_ctx, struct dom_sid);
385 status = ndr_pull_struct_blob(v, sid, sid,
386 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
387 if (!NT_STATUS_IS_OK(status)) {
395 pull a guid structure from a objectGUID in a result set.
397 struct GUID samdb_result_guid(struct ldb_message *msg, const char *attr)
399 const struct ldb_val *v;
406 v = ldb_msg_find_ldb_val(msg, attr);
409 mem_ctx = talloc_named_const(NULL, 0, "samdb_result_guid");
410 if (!mem_ctx) return guid;
411 status = ndr_pull_struct_blob(v, mem_ctx, &guid,
412 (ndr_pull_flags_fn_t)ndr_pull_GUID);
413 talloc_free(mem_ctx);
414 if (!NT_STATUS_IS_OK(status)) {
422 pull a sid prefix from a objectSid in a result set.
423 this is used to find the domain sid for a user
425 struct dom_sid *samdb_result_sid_prefix(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
428 struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, msg, attr);
429 if (!sid || sid->num_auths < 1) return NULL;
435 pull a NTTIME in a result set.
437 NTTIME samdb_result_nttime(struct ldb_message *msg, const char *attr, NTTIME default_value)
439 const char *str = ldb_msg_find_string(msg, attr, NULL);
440 if (!str) return default_value;
441 return nttime_from_string(str);
445 pull a uint64_t from a result set.
447 uint64_t samdb_result_uint64(struct ldb_message *msg, const char *attr, uint64_t default_value)
449 return ldb_msg_find_uint64(msg, attr, default_value);
454 construct the allow_password_change field from the PwdLastSet attribute and the
455 domain password settings
457 NTTIME samdb_result_allow_password_change(struct ldb_context *sam_ldb,
459 const struct ldb_dn *domain_dn,
460 struct ldb_message *msg,
463 uint64_t attr_time = samdb_result_uint64(msg, attr, 0);
466 if (attr_time == 0) {
470 minPwdAge = samdb_search_int64(sam_ldb, mem_ctx, 0, domain_dn, "minPwdAge", NULL);
472 /* yes, this is a -= not a += as minPwdAge is stored as the negative
473 of the number of 100-nano-seconds */
474 attr_time -= minPwdAge;
480 construct the force_password_change field from the PwdLastSet attribute and the
481 domain password settings
483 NTTIME samdb_result_force_password_change(struct ldb_context *sam_ldb,
485 const struct ldb_dn *domain_dn,
486 struct ldb_message *msg,
489 uint64_t attr_time = samdb_result_uint64(msg, attr, 0);
492 if (attr_time == 0) {
496 maxPwdAge = samdb_search_int64(sam_ldb, mem_ctx, 0, domain_dn, "maxPwdAge", NULL);
497 if (maxPwdAge == 0) {
500 attr_time -= maxPwdAge;
507 pull a samr_Password structutre from a result set.
509 struct samr_Password samdb_result_hash(struct ldb_message *msg, const char *attr)
511 struct samr_Password hash;
512 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
515 memcpy(hash.hash, val->data, MIN(val->length, sizeof(hash.hash)));
521 pull an array of samr_Password structutres from a result set.
523 uint_t samdb_result_hashes(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
524 const char *attr, struct samr_Password **hashes)
527 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
534 count = val->length / 16;
539 *hashes = talloc_array(mem_ctx, struct samr_Password, count);
544 for (i=0;i<count;i++) {
545 memcpy((*hashes)[i].hash, (i*16)+(char *)val->data, 16);
551 NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
552 struct samr_Password **lm_pwd, struct samr_Password **nt_pwd)
555 const char *unicodePwd = samdb_result_string(msg, "unicodePwd", NULL);
557 struct samr_Password *lmPwdHash, *ntPwdHash;
560 ntPwdHash = talloc(mem_ctx, struct samr_Password);
562 return NT_STATUS_NO_MEMORY;
565 E_md4hash(unicodePwd, ntPwdHash->hash);
572 lmPwdHash = talloc(mem_ctx, struct samr_Password);
574 return NT_STATUS_NO_MEMORY;
577 /* compute the new nt and lm hashes */
578 lm_hash_ok = E_deshash(unicodePwd, lmPwdHash->hash);
589 num_nt = samdb_result_hashes(mem_ctx, msg, "ntPwdHash", &ntPwdHash);
592 } else if (num_nt > 1) {
593 return NT_STATUS_INTERNAL_DB_CORRUPTION;
595 *nt_pwd = &ntPwdHash[0];
600 num_lm = samdb_result_hashes(mem_ctx, msg, "lmPwdHash", &lmPwdHash);
603 } else if (num_lm > 1) {
604 return NT_STATUS_INTERNAL_DB_CORRUPTION;
606 *lm_pwd = &lmPwdHash[0];
615 pull a samr_LogonHours structutre from a result set.
617 struct samr_LogonHours samdb_result_logon_hours(TALLOC_CTX *mem_ctx, struct ldb_message *msg, const char *attr)
619 struct samr_LogonHours hours;
620 const int units_per_week = 168;
621 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
623 hours.bits = talloc_array(mem_ctx, uint8_t, units_per_week);
627 hours.units_per_week = units_per_week;
628 memset(hours.bits, 0xFF, units_per_week);
630 memcpy(hours.bits, val->data, MIN(val->length, units_per_week));
636 pull a set of account_flags from a result set.
638 uint16_t samdb_result_acct_flags(struct ldb_message *msg, const char *attr)
640 uint_t userAccountControl = ldb_msg_find_uint(msg, attr, 0);
641 return samdb_uf2acb(userAccountControl);
645 copy from a template record to a message
647 int samdb_copy_template(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx,
648 struct ldb_message *msg, const char *expression)
650 struct ldb_message **res, *t;
654 /* pull the template record */
655 ret = gendb_search(sam_ldb, mem_ctx, NULL, &res, NULL, "%s", expression);
657 DEBUG(1,("samdb: ERROR: template '%s' matched %d records\n",
663 for (i=0;i<t->num_elements;i++) {
664 struct ldb_message_element *el = &t->elements[i];
665 /* some elements should not be copied from the template */
666 if (strcasecmp(el->name, "cn") == 0 ||
667 strcasecmp(el->name, "name") == 0 ||
668 strcasecmp(el->name, "sAMAccountName") == 0) {
671 for (j=0;j<el->num_values;j++) {
672 if (strcasecmp(el->name, "objectClass") == 0 &&
673 (strcasecmp((char *)el->values[j].data, "Template") == 0 ||
674 strcasecmp((char *)el->values[j].data, "userTemplate") == 0 ||
675 strcasecmp((char *)el->values[j].data, "groupTemplate") == 0 ||
676 strcasecmp((char *)el->values[j].data, "foreignSecurityTemplate") == 0 ||
677 strcasecmp((char *)el->values[j].data, "aliasTemplate") == 0 ||
678 strcasecmp((char *)el->values[j].data, "trustedDomainTemplate") == 0 ||
679 strcasecmp((char *)el->values[j].data, "secretTemplate") == 0)) {
682 samdb_msg_add_string(sam_ldb, mem_ctx, msg, el->name,
683 (char *)el->values[j].data);
692 add a string element to a message
694 int samdb_msg_add_string(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
695 const char *attr_name, const char *str)
697 char *s = talloc_strdup(mem_ctx, str);
698 char *a = talloc_strdup(mem_ctx, attr_name);
699 if (s == NULL || a == NULL) {
702 return ldb_msg_add_string(msg, a, s);
706 add a dom_sid element to a message
708 int samdb_msg_add_dom_sid(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
709 const char *attr_name, struct dom_sid *sid)
713 status = ndr_push_struct_blob(&v, mem_ctx, sid,
714 (ndr_push_flags_fn_t)ndr_push_dom_sid);
715 if (!NT_STATUS_IS_OK(status)) {
718 return ldb_msg_add_value(msg, attr_name, &v);
723 add a delete element operation to a message
725 int samdb_msg_add_delete(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
726 const char *attr_name)
728 char *a = talloc_strdup(mem_ctx, attr_name);
732 /* we use an empty replace rather than a delete, as it allows for
733 samdb_replace() to be used everywhere */
734 return ldb_msg_add_empty(msg, a, LDB_FLAG_MOD_REPLACE);
738 add a add attribute value to a message
740 int samdb_msg_add_addval(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
741 const char *attr_name, const char *value)
743 struct ldb_message_element *el;
746 a = talloc_strdup(mem_ctx, attr_name);
749 v = talloc_strdup(mem_ctx, value);
752 ret = ldb_msg_add_string(msg, a, v);
755 el = ldb_msg_find_element(msg, a);
758 el->flags = LDB_FLAG_MOD_ADD;
763 add a delete attribute value to a message
765 int samdb_msg_add_delval(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
766 const char *attr_name, const char *value)
768 struct ldb_message_element *el;
771 a = talloc_strdup(mem_ctx, attr_name);
774 v = talloc_strdup(mem_ctx, value);
777 ret = ldb_msg_add_string(msg, a, v);
780 el = ldb_msg_find_element(msg, a);
783 el->flags = LDB_FLAG_MOD_DELETE;
788 add a uint_t element to a message
790 int samdb_msg_add_uint(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
791 const char *attr_name, uint_t v)
793 const char *s = talloc_asprintf(mem_ctx, "%u", v);
794 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, s);
798 add a (signed) int64_t element to a message
800 int samdb_msg_add_int64(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
801 const char *attr_name, int64_t v)
803 const char *s = talloc_asprintf(mem_ctx, "%lld", (long long)v);
804 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, s);
808 add a uint64_t element to a message
810 int samdb_msg_add_uint64(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
811 const char *attr_name, uint64_t v)
813 const char *s = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)v);
814 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, s);
818 add a samr_Password element to a message
820 int samdb_msg_add_hash(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
821 const char *attr_name, struct samr_Password *hash)
824 val.data = talloc_memdup(mem_ctx, hash->hash, 16);
829 return ldb_msg_add_value(msg, attr_name, &val);
833 add a samr_Password array to a message
835 int samdb_msg_add_hashes(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
836 const char *attr_name, struct samr_Password *hashes, uint_t count)
840 val.data = talloc_array_size(mem_ctx, 16, count);
841 val.length = count*16;
845 for (i=0;i<count;i++) {
846 memcpy(i*16 + (char *)val.data, hashes[i].hash, 16);
848 return ldb_msg_add_value(msg, attr_name, &val);
852 add a acct_flags element to a message
854 int samdb_msg_add_acct_flags(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
855 const char *attr_name, uint32_t v)
857 return samdb_msg_add_uint(sam_ldb, mem_ctx, msg, attr_name, samdb_acb2uf(v));
861 add a logon_hours element to a message
863 int samdb_msg_add_logon_hours(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
864 const char *attr_name, struct samr_LogonHours *hours)
867 val.length = hours->units_per_week / 8;
868 val.data = hours->bits;
869 return ldb_msg_add_value(msg, attr_name, &val);
873 add a general value element to a message
875 int samdb_msg_add_value(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
876 const char *attr_name, const struct ldb_val *val)
878 return ldb_msg_add_value(msg, attr_name, val);
882 sets a general value element to a message
884 int samdb_msg_set_value(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
885 const char *attr_name, const struct ldb_val *val)
887 struct ldb_message_element *el;
889 el = ldb_msg_find_element(msg, attr_name);
893 return ldb_msg_add_value(msg, attr_name, val);
897 set a string element in a message
899 int samdb_msg_set_string(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
900 const char *attr_name, const char *str)
902 struct ldb_message_element *el;
904 el = ldb_msg_find_element(msg, attr_name);
908 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, str);
914 int samdb_add(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg)
916 return ldb_add(sam_ldb, msg);
922 int samdb_delete(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, const struct ldb_dn *dn)
924 return ldb_delete(sam_ldb, dn);
930 int samdb_modify(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg)
932 return ldb_modify(sam_ldb, msg);
936 replace elements in a record
938 int samdb_replace(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg)
942 /* mark all the message elements as LDB_FLAG_MOD_REPLACE */
943 for (i=0;i<msg->num_elements;i++) {
944 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
947 /* modify the samdb record */
948 return samdb_modify(sam_ldb, mem_ctx, msg);
952 return a default security descriptor
954 struct security_descriptor *samdb_default_security_descriptor(TALLOC_CTX *mem_ctx)
956 struct security_descriptor *sd;
958 sd = security_descriptor_initialise(mem_ctx);
963 struct ldb_dn *samdb_base_dn(TALLOC_CTX *mem_ctx)
965 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
966 int server_role = lp_server_role();
967 const char **split_realm;
974 if ((server_role == ROLE_DOMAIN_PDC)
975 || (server_role == ROLE_DOMAIN_BDC)) {
977 split_realm = str_list_make(tmp_ctx, lp_realm(), ".");
979 talloc_free(tmp_ctx);
983 i = str_list_length(split_realm);
985 for (; i >= 0; i--) {
986 dn = ldb_dn_build_child(tmp_ctx, "dc", split_realm[i], dn);
988 talloc_free(tmp_ctx);
994 return ldb_dn_string_compose(mem_ctx, NULL, "cn=%s", lp_netbios_name());