2 * Copyright (c) 1999-2001, 2003, PADL Software Pty Ltd.
3 * Copyright (c) 2004, Andrew Bartlett <abartlet@samba.org>.
4 * Copyright (c) 2004, Stefan Metzmacher <metze@samba.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of PADL Software nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include "system/time.h"
38 #include "dsdb/common/flags.h"
40 #include "krb5_locl.h"
41 #include "lib/ldb/include/ldb.h"
42 #include "lib/ldb/include/ldb_errors.h"
43 #include "librpc/gen_ndr/netlogon.h"
44 #include "auth/auth.h"
45 #include "auth/credentials/credentials.h"
46 #include "auth/auth_sam.h"
48 #include "dsdb/samdb/samdb.h"
51 { HDB_LDB_ENT_TYPE_CLIENT, HDB_LDB_ENT_TYPE_SERVER,
52 HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_ANY };
54 static const char * const krb5_attrs[] = {
59 "servicePrincipalName",
71 "msDS-KeyVersionNumber",
75 static const char *realm_ref_attrs[] = {
81 static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val)
87 gentime = ldb_msg_find_attr_as_string(msg, attr, NULL);
91 tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm);
99 static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type)
101 HDBFlags flags = int2HDBFlags(0);
103 /* we don't allow kadmin deletes */
106 /* mark the principal as invalid to start with */
111 /* All accounts are servers, but this may be disabled again in the caller */
114 /* Account types - clear the invalid bit if it turns out to be valid */
115 if (userAccountControl & UF_NORMAL_ACCOUNT) {
116 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
122 if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
123 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
128 if (userAccountControl & UF_WORKSTATION_TRUST_ACCOUNT) {
129 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
134 if (userAccountControl & UF_SERVER_TRUST_ACCOUNT) {
135 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
141 /* Not permitted to act as a client if disabled */
142 if (userAccountControl & UF_ACCOUNTDISABLE) {
145 if (userAccountControl & UF_LOCKOUT) {
149 if (userAccountControl & UF_PASSWORD_NOTREQD) {
154 UF_PASSWORD_CANT_CHANGE and UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED are irrelevent
156 if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) {
160 /* UF_DONT_EXPIRE_PASSWD and UF_USE_DES_KEY_ONLY handled in LDB_message2entry() */
163 if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
167 if (userAccountControl & UF_SMARTCARD_REQUIRED) {
168 flags.require_hwauth = 1;
170 if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) {
171 flags.ok_as_delegate = 1;
173 if (!(userAccountControl & UF_NOT_DELEGATED)) {
174 flags.forwardable = 1;
178 if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) {
179 flags.require_preauth = 0;
181 flags.require_preauth = 1;
187 static int hdb_ldb_destrutor(struct hdb_ldb_private *private)
189 hdb_entry_ex *entry_ex = private->entry_ex;
190 free_hdb_entry(&entry_ex->entry);
194 static void hdb_ldb_free_entry(krb5_context context, hdb_entry_ex *entry_ex)
196 talloc_free(entry_ex->ctx);
199 static krb5_error_code LDB_message2entry_keys(TALLOC_CTX *mem_ctx,
200 struct ldb_message *msg,
201 unsigned int userAccountControl,
202 hdb_entry_ex *entry_ex)
204 krb5_error_code ret = 0;
205 struct ldb_message_element *ldb_keys;
208 /* Get krb5Key from the db */
210 ldb_keys = ldb_msg_find_element(msg, "krb5Key");
213 /* oh, no password. Apparently (comment in
214 * hdb-ldap.c) this violates the ASN.1, but this
215 * allows an entry with no keys (yet). */
216 entry_ex->entry.keys.val = NULL;
217 entry_ex->entry.keys.len = 0;
219 /* allocate space to decode into */
220 entry_ex->entry.keys.val = calloc(ldb_keys->num_values, sizeof(Key));
221 if (entry_ex->entry.keys.val == NULL) {
226 entry_ex->entry.keys.len = 0;
228 /* Decode Kerberos keys into the hdb structure */
229 for (i=0; i < ldb_keys->num_values; i++) {
232 ret = decode_Key(ldb_keys->values[i].data, ldb_keys->values[i].length,
235 /* Could be bougus data in the entry, or out of memory */
239 if (userAccountControl & UF_USE_DES_KEY_ONLY) {
240 switch (key.key.keytype) {
242 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
243 entry_ex->entry.keys.len++;
245 /* We must use DES keys only */
249 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
250 entry_ex->entry.keys.len++;
260 * Construct an hdb_entry from a directory entry.
262 static krb5_error_code LDB_message2entry(krb5_context context, HDB *db,
263 TALLOC_CTX *mem_ctx, krb5_const_principal principal,
264 enum hdb_ldb_ent_type ent_type,
265 struct ldb_message *msg,
266 struct ldb_message *realm_ref_msg,
267 hdb_entry_ex *entry_ex)
269 unsigned int userAccountControl;
271 krb5_error_code ret = 0;
272 krb5_boolean is_computer = FALSE;
273 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg, "dnsRoot", NULL);
274 char *realm = strupper_talloc(mem_ctx, dnsdomain);
275 struct ldb_dn *domain_dn = samdb_result_dn((struct ldb_context *)db->hdb_db,
279 ldb_dn_new(mem_ctx, (struct ldb_context *)db->hdb_db, NULL));
281 struct hdb_ldb_private *private;
284 struct ldb_message_element *objectclasses;
285 struct ldb_val computer_val;
286 computer_val.data = discard_const_p(uint8_t,"computer");
287 computer_val.length = strlen((const char *)computer_val.data);
289 objectclasses = ldb_msg_find_element(msg, "objectClass");
291 if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
295 memset(entry_ex, 0, sizeof(*entry_ex));
298 krb5_set_error_string(context, "talloc_strdup: out of memory");
303 private = talloc(mem_ctx, struct hdb_ldb_private);
309 private->entry_ex = entry_ex;
311 talloc_set_destructor(private, hdb_ldb_destrutor);
313 entry_ex->ctx = private;
314 entry_ex->free_entry = hdb_ldb_free_entry;
316 userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
319 entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
320 if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
321 const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
322 if (!samAccountName) {
323 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
327 samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
328 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
331 ret = copy_Principal(principal, entry_ex->entry.principal);
333 krb5_clear_error_string(context);
337 /* While we have copied the client principal, tests
338 * show that Win2k3 returns the 'corrected' realm, not
339 * the client-specified realm. This code attempts to
340 * replace the client principal's realm with the one
341 * we determine from our records */
343 /* this has to be with malloc() */
344 strdup_realm = strdup(realm);
347 krb5_clear_error_string(context);
350 free(*krb5_princ_realm(context, entry_ex->entry.principal));
351 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
354 entry_ex->entry.kvno = ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0);
356 entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
358 if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
359 entry_ex->entry.flags.invalid = 0;
360 entry_ex->entry.flags.server = 1;
361 entry_ex->entry.flags.forwardable = 1;
362 entry_ex->entry.flags.ok_as_delegate = 1;
365 if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
366 if (!is_computer && !ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL)) {
367 entry_ex->entry.flags.server = 0;
371 /* use 'whenCreated' */
372 entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
374 entry_ex->entry.created_by.principal = NULL;
376 entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
377 if (entry_ex->entry.modified_by == NULL) {
378 krb5_set_error_string(context, "malloc: out of memory");
383 /* use 'whenChanged' */
384 entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
386 entry_ex->entry.modified_by->principal = NULL;
388 entry_ex->entry.valid_start = NULL;
390 acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
391 if ((acct_expiry == (NTTIME)-1) ||
392 (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
393 entry_ex->entry.valid_end = NULL;
395 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
396 if (entry_ex->entry.valid_end == NULL) {
400 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
403 if (ent_type != HDB_LDB_ENT_TYPE_KRBTGT) {
404 NTTIME must_change_time
405 = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
407 if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) {
408 entry_ex->entry.pw_end = NULL;
410 entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
411 if (entry_ex->entry.pw_end == NULL) {
415 *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
418 entry_ex->entry.pw_end = NULL;
421 entry_ex->entry.max_life = NULL;
423 entry_ex->entry.max_renew = NULL;
425 entry_ex->entry.generation = NULL;
427 /* Get keys from the db */
428 ret = LDB_message2entry_keys(mem_ctx, msg, userAccountControl, entry_ex);
430 /* Could be bougus data in the entry, or out of memory */
434 entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
435 if (entry_ex->entry.etypes == NULL) {
436 krb5_clear_error_string(context);
440 entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
441 entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
442 if (entry_ex->entry.etypes->val == NULL) {
443 krb5_clear_error_string(context);
447 for (i=0; i < entry_ex->entry.etypes->len; i++) {
448 entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype;
452 private->msg = talloc_steal(private, msg);
453 private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
454 private->samdb = (struct ldb_context *)db->hdb_db;
458 /* This doesn't free ent itself, that is for the eventual caller to do */
459 hdb_free_entry(context, entry_ex);
461 talloc_steal(db, entry_ex->ctx);
467 static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
469 krb5_const_principal principal,
470 enum hdb_ldb_ent_type ent_type,
471 struct ldb_dn *realm_dn,
472 struct ldb_message ***pmsg)
477 const char * const *princ_attrs = krb5_attrs;
480 char *short_princ_talloc;
482 struct ldb_result *res = NULL;
484 ret = krb5_unparse_name_flags(context, principal, KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ);
487 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
488 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
492 short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
494 if (!short_princ_talloc) {
495 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
500 case HDB_LDB_ENT_TYPE_CLIENT:
503 case HDB_LDB_ENT_TYPE_ANY:
506 case HDB_LDB_ENT_TYPE_KRBTGT:
507 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
510 case HDB_LDB_ENT_TYPE_SERVER:
511 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
517 krb5_set_error_string(context, "talloc_asprintf: out of memory");
521 lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
523 if (lret != LDB_SUCCESS) {
524 DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
525 return HDB_ERR_NOENTRY;
526 } else if (res->count == 0 || res->count > 1) {
527 DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count));
529 return HDB_ERR_NOENTRY;
531 talloc_steal(mem_ctx, res->msgs);
537 static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
540 struct ldb_message ***pmsg)
543 struct ldb_result *cross_ref_res;
544 struct ldb_dn *partitions_basedn = samdb_partitions_dn(ldb_ctx, mem_ctx);
546 ret = ldb_search_exp_fmt(ldb_ctx, mem_ctx, &cross_ref_res,
547 partitions_basedn, LDB_SCOPE_SUBTREE, realm_ref_attrs,
548 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
551 if (ret != LDB_SUCCESS) {
552 DEBUG(3, ("Failed to search to lookup realm(%s): %s\n", realm, ldb_errstring(ldb_ctx)));
553 talloc_free(cross_ref_res);
554 return HDB_ERR_NOENTRY;
555 } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) {
556 DEBUG(3, ("Failed find a single entry for realm %s: got %d\n", realm, cross_ref_res->count));
557 talloc_free(cross_ref_res);
558 return HDB_ERR_NOENTRY;
562 *pmsg = cross_ref_res->msgs;
563 talloc_steal(mem_ctx, cross_ref_res->msgs);
565 talloc_free(cross_ref_res);
571 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
573 if (db->hdb_master_key_set) {
574 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
575 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
576 return HDB_ERR_NOENTRY;
582 static krb5_error_code LDB_close(krb5_context context, HDB *db)
587 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
592 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
597 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
599 return HDB_ERR_DB_INUSE;
602 static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db,
604 krb5_const_principal principal,
606 hdb_entry_ex *entry_ex) {
608 char *principal_string;
610 struct ldb_message **msg = NULL;
611 struct ldb_message **realm_ref_msg = NULL;
613 ret = krb5_unparse_name(context, principal, &principal_string);
619 nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
620 mem_ctx, principal_string,
621 &msg, &realm_ref_msg);
622 free(principal_string);
623 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
624 return HDB_ERR_NOENTRY;
625 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
627 } else if (!NT_STATUS_IS_OK(nt_status)) {
631 ret = LDB_message2entry(context, db, mem_ctx,
632 principal, HDB_LDB_ENT_TYPE_CLIENT,
633 msg[0], realm_ref_msg[0], entry_ex);
637 static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
639 krb5_const_principal principal,
641 hdb_entry_ex *entry_ex)
644 struct ldb_message **msg = NULL;
645 struct ldb_message **realm_ref_msg = NULL;
646 struct ldb_dn *realm_dn;
648 krb5_principal alloc_principal = NULL;
649 if (principal->name.name_string.len != 2
650 || (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) {
652 return HDB_ERR_NOENTRY;
655 /* krbtgt case. Either us or a trusted realm */
656 if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
657 mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
659 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
660 * is in our db, then direct the caller at our primary
663 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg[0], "dnsRoot", NULL);
664 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
666 krb5_set_error_string(context, "strupper_talloc: out of memory");
670 ret = krb5_copy_principal(context, principal, &alloc_principal);
675 free(alloc_principal->name.name_string.val[1]);
676 alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
677 talloc_free(realm_fixed);
678 if (!alloc_principal->name.name_string.val[1]) {
679 krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
682 principal = alloc_principal;
683 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
685 /* we should lookup trusted domains */
686 return HDB_ERR_NOENTRY;
689 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
691 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
693 principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
696 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
697 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
701 ret = LDB_message2entry(context, db, mem_ctx,
702 principal, HDB_LDB_ENT_TYPE_KRBTGT,
703 msg[0], realm_ref_msg[0], entry_ex);
705 krb5_warnx(context, "LDB_fetch: message2entry failed");
710 static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
712 krb5_const_principal principal,
714 hdb_entry_ex *entry_ex)
718 struct ldb_message **msg = NULL;
719 struct ldb_message **realm_ref_msg = NULL;
720 struct ldb_dn *partitions_basedn = samdb_partitions_dn(db->hdb_db, mem_ctx);
721 if (principal->name.name_string.len >= 2) {
722 /* 'normal server' case */
725 struct ldb_dn *user_dn, *domain_dn;
726 char *principal_string;
728 ret = krb5_unparse_name_flags(context, principal,
729 KRB5_PRINCIPAL_UNPARSE_NO_REALM,
735 /* At this point we may find the host is known to be
736 * in a different realm, so we should generate a
737 * referral instead */
738 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
739 mem_ctx, principal_string,
740 &user_dn, &domain_dn);
741 free(principal_string);
743 if (!NT_STATUS_IS_OK(nt_status)) {
744 return HDB_ERR_NOENTRY;
747 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
748 mem_ctx, user_dn, &msg, krb5_attrs);
751 return HDB_ERR_NOENTRY;
754 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
755 mem_ctx, partitions_basedn, &realm_ref_msg, realm_ref_attrs,
756 "ncName=%s", ldb_dn_get_linearized(domain_dn));
759 return HDB_ERR_NOENTRY;
763 struct ldb_dn *realm_dn;
764 /* server as client principal case, but we must not lookup userPrincipalNames */
766 realm = krb5_principal_get_realm(context, principal);
768 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
769 mem_ctx, realm, &realm_ref_msg);
771 return HDB_ERR_NOENTRY;
774 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
776 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
778 principal, HDB_LDB_ENT_TYPE_SERVER, realm_dn, &msg);
785 ret = LDB_message2entry(context, db, mem_ctx,
786 principal, HDB_LDB_ENT_TYPE_SERVER,
787 msg[0], realm_ref_msg[0], entry_ex);
789 krb5_warnx(context, "LDB_fetch: message2entry failed");
795 static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
796 krb5_const_principal principal,
798 hdb_entry_ex *entry_ex)
800 krb5_error_code ret = HDB_ERR_NOENTRY;
802 TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
805 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
809 if (flags & HDB_F_GET_CLIENT) {
810 ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex);
811 if (ret != HDB_ERR_NOENTRY) goto done;
813 if (flags & HDB_F_GET_SERVER) {
814 ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
815 if (ret != HDB_ERR_NOENTRY) goto done;
816 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
817 if (ret != HDB_ERR_NOENTRY) goto done;
819 if (flags & HDB_F_GET_KRBTGT) {
820 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
821 if (ret != HDB_ERR_NOENTRY) goto done;
825 talloc_free(mem_ctx);
829 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
831 return HDB_ERR_DB_INUSE;
834 static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal)
836 return HDB_ERR_DB_INUSE;
840 struct ldb_context *ctx;
843 struct ldb_message **msgs;
844 struct ldb_message **realm_ref_msgs;
847 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
850 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
852 hdb_entry_ex entry_ex;
853 memset(&entry_ex, '\0', sizeof(entry_ex));
856 return HDB_ERR_NOENTRY;
859 mem_ctx = talloc_named(priv, 0, "LDB_seq context");
862 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
866 if (priv->index < priv->count) {
867 ret = LDB_message2entry(context, db, mem_ctx,
868 NULL, HDB_LDB_ENT_TYPE_ANY,
869 priv->msgs[priv->index++],
870 priv->realm_ref_msgs[0], entry);
872 ret = HDB_ERR_NOENTRY;
877 db->hdb_openp = NULL;
879 talloc_free(mem_ctx);
885 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
888 struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
889 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
891 struct ldb_dn *realm_dn = NULL;
892 struct ldb_result *res = NULL;
893 struct ldb_message **realm_ref_msgs = NULL;
903 priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
905 krb5_set_error_string(context, "talloc: out of memory");
912 priv->realm_ref_msgs = NULL;
915 mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
918 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
922 ret = krb5_get_default_realm(context, &realm);
928 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
929 mem_ctx, realm, &realm_ref_msgs);
935 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
936 return HDB_ERR_NOENTRY;
939 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msgs[0], "nCName", NULL);
941 priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
943 lret = ldb_search(ldb_ctx, realm_dn,
944 LDB_SCOPE_SUBTREE, "(objectClass=user)",
947 if (lret != LDB_SUCCESS) {
949 return HDB_ERR_NOENTRY;
952 priv->count = res->count;
953 priv->msgs = talloc_steal(priv, res->msgs);
956 db->hdb_openp = priv;
958 ret = LDB_seq(context, db, flags, entry);
962 db->hdb_openp = NULL;
964 talloc_free(mem_ctx);
969 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
972 return LDB_seq(context, db, flags, entry);
975 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
981 /* This interface is to be called by the KDC, which is expecting Samba
982 * calling conventions. It is also called by a wrapper
983 * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
986 NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx,
987 krb5_context context, struct HDB **db, const char *arg)
990 struct auth_session_info *session_info;
991 *db = talloc(mem_ctx, HDB);
993 krb5_set_error_string(context, "malloc: out of memory");
994 return NT_STATUS_NO_MEMORY;
997 (*db)->hdb_master_key_set = 0;
998 (*db)->hdb_db = NULL;
1000 nt_status = auth_system_session_info(*db, &session_info);
1001 if (!NT_STATUS_IS_OK(nt_status)) {
1005 /* The idea here is very simple. Using Kerberos to
1006 * authenticate the KDC to the LDAP server is higly likely to
1009 * In future we may set this up to use EXERNAL and SSL
1010 * certificates, for now it will almost certainly be NTLMSSP
1013 cli_credentials_set_kerberos_state(session_info->credentials,
1014 CRED_DONT_USE_KERBEROS);
1016 /* Setup the link to LDB */
1017 (*db)->hdb_db = samdb_connect(*db, session_info);
1018 if ((*db)->hdb_db == NULL) {
1019 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1020 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1023 (*db)->hdb_openp = 0;
1024 (*db)->hdb_open = LDB_open;
1025 (*db)->hdb_close = LDB_close;
1026 (*db)->hdb_fetch = LDB_fetch;
1027 (*db)->hdb_store = LDB_store;
1028 (*db)->hdb_remove = LDB_remove;
1029 (*db)->hdb_firstkey = LDB_firstkey;
1030 (*db)->hdb_nextkey = LDB_nextkey;
1031 (*db)->hdb_lock = LDB_lock;
1032 (*db)->hdb_unlock = LDB_unlock;
1033 (*db)->hdb_rename = LDB_rename;
1034 /* we don't implement these, as we are not a lockable database */
1035 (*db)->hdb__get = NULL;
1036 (*db)->hdb__put = NULL;
1037 /* kadmin should not be used for deletes - use other tools instead */
1038 (*db)->hdb__del = NULL;
1039 (*db)->hdb_destroy = LDB_destroy;
1041 return NT_STATUS_OK;
1044 krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
1047 /* The global kdc_mem_ctx, Disgusting, ugly hack, but it means one less private hook */
1048 nt_status = kdc_hdb_ldb_create(kdc_mem_ctx, context, db, arg);
1050 if (NT_STATUS_IS_OK(nt_status)) {