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"
40 #include "lib/ldb/include/ldb.h"
41 #include "lib/ldb/include/ldb_errors.h"
42 #include "librpc/gen_ndr/netlogon.h"
43 #include "auth/auth.h"
44 #include "auth/auth_sam.h"
46 #include "dsdb/samdb/samdb.h"
49 { HDB_LDB_ENT_TYPE_CLIENT, HDB_LDB_ENT_TYPE_SERVER,
50 HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_ANY };
52 static const char * const krb5_attrs[] = {
57 "servicePrincipalName",
69 "msDS-KeyVersionNumber",
73 static const char *realm_ref_attrs[] = {
79 static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val)
85 gentime = ldb_msg_find_string(msg, attr, NULL);
89 tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm);
97 static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type)
99 HDBFlags flags = int2HDBFlags(0);
101 krb5_warnx(context, "uf2HDBFlags: userAccountControl: %08x\n", userAccountControl);
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 if (userAccountControl & UF_PASSWORD_CANT_CHANGE) {
159 if (userAccountControl & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED) {
163 if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) {
167 /* UF_DONT_EXPIRE_PASSWD handled in LDB_message2entry() */
170 if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
174 if (userAccountControl & UF_SMARTCARD_REQUIRED) {
175 flags.require_hwauth = 1;
177 if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) {
178 flags.ok_as_delegate = 1;
180 if (!(userAccountControl & UF_NOT_DELEGATED)) {
181 flags.forwardable = 1;
186 if (userAccountControl & UF_SMARTCARD_USE_DES_KEY_ONLY) {
190 if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) {
191 flags.require_preauth = 0;
193 flags.require_preauth = 1;
197 krb5_warnx(context, "uf2HDBFlags: HDBFlags: %08x\n", HDBFlags2int(flags));
202 static int hdb_ldb_destrutor(struct hdb_ldb_private *private)
204 hdb_entry_ex *entry_ex = private->entry_ex;
205 free_hdb_entry(&entry_ex->entry);
209 static void hdb_ldb_free_entry(krb5_context context, hdb_entry_ex *entry_ex)
211 talloc_free(entry_ex->ctx);
215 * Construct an hdb_entry from a directory entry.
217 static krb5_error_code LDB_message2entry(krb5_context context, HDB *db,
218 TALLOC_CTX *mem_ctx, krb5_const_principal principal,
219 enum hdb_ldb_ent_type ent_type,
220 struct ldb_message *msg,
221 struct ldb_message *realm_ref_msg,
222 hdb_entry_ex *entry_ex)
224 unsigned int userAccountControl;
226 krb5_error_code ret = 0;
227 krb5_boolean is_computer = FALSE;
228 const char *dnsdomain = ldb_msg_find_string(realm_ref_msg, "dnsRoot", NULL);
229 char *realm = strupper_talloc(mem_ctx, dnsdomain);
230 struct ldb_dn *domain_dn = samdb_result_dn(mem_ctx, realm_ref_msg, "nCName", ldb_dn_new(mem_ctx));
232 struct hdb_ldb_private *private;
234 struct ldb_message_element *ldb_keys;
236 struct ldb_message_element *objectclasses;
237 struct ldb_val computer_val;
238 computer_val.data = discard_const_p(uint8_t,"computer");
239 computer_val.length = strlen((const char *)computer_val.data);
241 objectclasses = ldb_msg_find_element(msg, "objectClass");
243 if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
247 memset(entry_ex, 0, sizeof(*entry_ex));
249 krb5_warnx(context, "LDB_message2entry:\n");
252 krb5_set_error_string(context, "talloc_strdup: out of memory");
257 private = talloc(mem_ctx, struct hdb_ldb_private);
263 private->entry_ex = entry_ex;
265 talloc_set_destructor(private, hdb_ldb_destrutor);
267 entry_ex->ctx = private;
268 entry_ex->free_entry = hdb_ldb_free_entry;
270 userAccountControl = ldb_msg_find_uint(msg, "userAccountControl", 0);
273 entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
274 if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
275 const char *samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
276 if (!samAccountName) {
277 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
281 samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
282 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
285 ret = copy_Principal(principal, entry_ex->entry.principal);
287 krb5_clear_error_string(context);
291 /* While we have copied the client principal, tests
292 * show that Win2k3 returns the 'corrected' realm, not
293 * the client-specified realm. This code attempts to
294 * replace the client principal's realm with the one
295 * we determine from our records */
297 /* this has to be with malloc() */
298 strdup_realm = strdup(realm);
301 krb5_clear_error_string(context);
304 free(*krb5_princ_realm(context, entry_ex->entry.principal));
305 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
308 entry_ex->entry.kvno = ldb_msg_find_int(msg, "msDS-KeyVersionNumber", 0);
310 entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
312 if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
313 entry_ex->entry.flags.invalid = 0;
314 entry_ex->entry.flags.server = 1;
315 entry_ex->entry.flags.forwardable = 1;
316 entry_ex->entry.flags.ok_as_delegate = 1;
319 if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
320 if (!is_computer && !ldb_msg_find_string(msg, "servicePrincipalName", NULL)) {
321 entry_ex->entry.flags.server = 0;
325 /* use 'whenCreated' */
326 entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
328 entry_ex->entry.created_by.principal = NULL;
330 entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
331 if (entry_ex->entry.modified_by == NULL) {
332 krb5_set_error_string(context, "malloc: out of memory");
337 /* use 'whenChanged' */
338 entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
340 entry_ex->entry.modified_by->principal = NULL;
342 entry_ex->entry.valid_start = NULL;
344 acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
345 if ((acct_expiry == (NTTIME)-1) ||
346 (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
347 entry_ex->entry.valid_end = NULL;
349 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
350 if (entry_ex->entry.valid_end == NULL) {
354 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
357 if (ent_type != HDB_LDB_ENT_TYPE_KRBTGT) {
358 NTTIME must_change_time
359 = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
361 if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) {
362 entry_ex->entry.pw_end = NULL;
364 entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
365 if (entry_ex->entry.pw_end == NULL) {
369 *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
372 entry_ex->entry.pw_end = NULL;
375 entry_ex->entry.max_life = NULL;
377 entry_ex->entry.max_renew = NULL;
379 entry_ex->entry.generation = NULL;
381 /* Get krb5Key from the db */
383 ldb_keys = ldb_msg_find_element(msg, "krb5Key");
386 /* oh, no password. Apparently (comment in
387 * hdb-ldap.c) this violates the ASN.1, but this
388 * allows an entry with no keys (yet). */
389 entry_ex->entry.keys.val = NULL;
390 entry_ex->entry.keys.len = 0;
392 /* allocate space to decode into */
393 entry_ex->entry.keys.val = calloc(ldb_keys->num_values, sizeof(Key));
394 if (entry_ex->entry.keys.val == NULL) {
398 entry_ex->entry.keys.len = ldb_keys->num_values;
400 /* Decode Kerberos keys into the hdb structure */
401 for (i=0; i < entry_ex->entry.keys.len; i++) {
403 ret = decode_Key(ldb_keys->values[i].data, ldb_keys->values[i].length,
404 &entry_ex->entry.keys.val[i], &decode_len);
406 /* Could be bougus data in the entry, or out of memory */
412 entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
413 if (entry_ex->entry.etypes == NULL) {
414 krb5_clear_error_string(context);
418 entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
419 entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
420 if (entry_ex->entry.etypes->val == NULL) {
421 krb5_clear_error_string(context);
425 for (i=0; i < entry_ex->entry.etypes->len; i++) {
426 entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype;
430 private->msg = talloc_steal(private, msg);
431 private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
432 private->samdb = (struct ldb_context *)db->hdb_db;
434 entry_ex->check_client_access = hdb_ldb_check_client_access;
435 entry_ex->authz_data_tgs_req = hdb_ldb_authz_data_tgs_req;
436 entry_ex->authz_data_as_req = hdb_ldb_authz_data_as_req;
440 /* This doesn't free ent itself, that is for the eventual caller to do */
441 hdb_free_entry(context, entry_ex);
443 talloc_steal(db, entry_ex->ctx);
449 static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
451 krb5_const_principal principal,
452 enum hdb_ldb_ent_type ent_type,
453 const struct ldb_dn *realm_dn,
454 struct ldb_message ***pmsg)
459 const char * const *princ_attrs = krb5_attrs;
462 char *short_princ_talloc;
466 struct ldb_result *res = NULL;
468 ret = krb5_unparse_name_norealm(context, principal, &short_princ);
471 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
472 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
476 short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
478 if (!short_princ_talloc) {
479 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
484 case HDB_LDB_ENT_TYPE_CLIENT:
487 case HDB_LDB_ENT_TYPE_ANY:
490 case HDB_LDB_ENT_TYPE_KRBTGT:
491 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
494 case HDB_LDB_ENT_TYPE_SERVER:
495 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
501 krb5_set_error_string(context, "talloc_asprintf: out of memory");
505 lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
507 realm_dn_str = ldb_dn_linearize(mem_ctx, realm_dn);
509 if (lret != LDB_SUCCESS) {
510 DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
511 return HDB_ERR_NOENTRY;
512 } else if (res->count == 0 || res->count > 1) {
513 DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count));
514 return HDB_ERR_NOENTRY;
516 talloc_steal(mem_ctx, res->msgs);
522 static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
525 struct ldb_message ***pmsg)
528 char *cross_ref_filter;
529 struct ldb_result *cross_ref_res;
531 cross_ref_filter = talloc_asprintf(mem_ctx,
532 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
534 if (!cross_ref_filter) {
535 krb5_set_error_string(context, "asprintf: out of memory");
539 ret = ldb_search(ldb_ctx, NULL, LDB_SCOPE_SUBTREE, cross_ref_filter, realm_ref_attrs, &cross_ref_res);
541 if (ret != LDB_SUCCESS) {
542 DEBUG(3, ("Failed to search for %s: %s\n", cross_ref_filter, ldb_errstring(ldb_ctx)));
543 talloc_free(cross_ref_res);
544 return HDB_ERR_NOENTRY;
545 } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) {
546 DEBUG(3, ("Failed find a single entry for %s: got %d\n", cross_ref_filter, cross_ref_res->count));
547 talloc_free(cross_ref_res);
548 return HDB_ERR_NOENTRY;
552 *pmsg = cross_ref_res->msgs;
553 talloc_steal(mem_ctx, cross_ref_res->msgs);
555 talloc_free(cross_ref_res);
561 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
563 if (db->hdb_master_key_set) {
564 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
565 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
566 return HDB_ERR_NOENTRY;
572 static krb5_error_code LDB_close(krb5_context context, HDB *db)
577 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
582 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
587 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
589 return HDB_ERR_DB_INUSE;
592 static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db,
594 krb5_const_principal principal,
596 hdb_entry_ex *entry_ex) {
598 char *principal_string;
600 struct ldb_message **msg = NULL;
601 struct ldb_message **realm_ref_msg = NULL;
603 ret = krb5_unparse_name(context, principal, &principal_string);
609 nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
610 mem_ctx, principal_string,
611 &msg, &realm_ref_msg);
612 free(principal_string);
613 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
614 return HDB_ERR_NOENTRY;
615 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
617 } else if (!NT_STATUS_IS_OK(nt_status)) {
621 ret = LDB_message2entry(context, db, mem_ctx,
622 principal, HDB_LDB_ENT_TYPE_CLIENT,
623 msg[0], realm_ref_msg[0], entry_ex);
627 static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
629 krb5_const_principal principal,
631 hdb_entry_ex *entry_ex)
634 struct ldb_message **msg = NULL;
635 struct ldb_message **realm_ref_msg = NULL;
636 const struct ldb_dn *realm_dn;
638 krb5_principal alloc_principal = NULL;
639 if (principal->name.name_string.len != 2
640 || (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) {
642 return HDB_ERR_NOENTRY;
645 /* krbtgt case. Either us or a trusted realm */
646 if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
647 mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
649 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
650 * is in our db, then direct the caller at our primary
653 const char *dnsdomain = ldb_msg_find_string(realm_ref_msg[0], "dnsRoot", NULL);
654 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
656 krb5_set_error_string(context, "strupper_talloc: out of memory");
660 ret = krb5_copy_principal(context, principal, &alloc_principal);
665 free(alloc_principal->name.name_string.val[1]);
666 alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
667 talloc_free(realm_fixed);
668 if (!alloc_principal->name.name_string.val[1]) {
669 krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
672 principal = alloc_principal;
673 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
676 /* we should lookup trusted domains */
677 return HDB_ERR_NOENTRY;
680 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
682 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
684 principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
687 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
688 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
692 ret = LDB_message2entry(context, db, mem_ctx,
693 principal, HDB_LDB_ENT_TYPE_KRBTGT,
694 msg[0], realm_ref_msg[0], entry_ex);
696 krb5_warnx(context, "LDB_fetch: message2entry failed");
701 static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
703 krb5_const_principal principal,
705 hdb_entry_ex *entry_ex)
709 struct ldb_message **msg = NULL;
710 struct ldb_message **realm_ref_msg = NULL;
711 if (principal->name.name_string.len >= 2) {
712 /* 'normal server' case */
715 struct ldb_dn *user_dn, *domain_dn;
716 char *principal_string;
718 ret = krb5_unparse_name_norealm(context, principal, &principal_string);
723 /* At this point we may find the host is known to be
724 * in a different realm, so we should generate a
725 * referral instead */
726 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
727 mem_ctx, principal_string,
728 &user_dn, &domain_dn);
729 free(principal_string);
731 if (!NT_STATUS_IS_OK(nt_status)) {
732 return HDB_ERR_NOENTRY;
735 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
736 mem_ctx, user_dn, &msg, krb5_attrs);
739 return HDB_ERR_NOENTRY;
742 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
743 mem_ctx, NULL, &realm_ref_msg, realm_ref_attrs,
744 "ncName=%s", ldb_dn_linearize(mem_ctx, domain_dn));
747 return HDB_ERR_NOENTRY;
751 const struct ldb_dn *realm_dn;
752 /* server as client principal case, but we must not lookup userPrincipalNames */
754 realm = krb5_principal_get_realm(context, principal);
756 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
757 mem_ctx, realm, &realm_ref_msg);
759 return HDB_ERR_NOENTRY;
762 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
764 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
766 principal, HDB_LDB_ENT_TYPE_SERVER, realm_dn, &msg);
773 ret = LDB_message2entry(context, db, mem_ctx,
774 principal, HDB_LDB_ENT_TYPE_SERVER,
775 msg[0], realm_ref_msg[0], entry_ex);
777 krb5_warnx(context, "LDB_fetch: message2entry failed");
783 static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
784 krb5_const_principal principal,
786 hdb_entry_ex *entry_ex)
788 krb5_error_code ret = HDB_ERR_NOENTRY;
790 TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
793 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
797 if (flags & HDB_F_GET_CLIENT) {
798 ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex);
799 if (ret != HDB_ERR_NOENTRY) goto done;
801 if (flags & HDB_F_GET_SERVER) {
802 ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
803 if (ret != HDB_ERR_NOENTRY) goto done;
804 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
805 if (ret != HDB_ERR_NOENTRY) goto done;
807 if (flags & HDB_F_GET_KRBTGT) {
808 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
809 if (ret != HDB_ERR_NOENTRY) goto done;
813 talloc_free(mem_ctx);
817 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
819 return HDB_ERR_DB_INUSE;
822 static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal)
824 return HDB_ERR_DB_INUSE;
828 struct ldb_context *ctx;
831 struct ldb_message **msgs;
832 struct ldb_message **realm_ref_msgs;
835 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
838 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
840 hdb_entry_ex entry_ex;
841 memset(&entry_ex, '\0', sizeof(entry_ex));
844 return HDB_ERR_NOENTRY;
847 mem_ctx = talloc_named(priv, 0, "LDB_seq context");
850 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
854 if (priv->index < priv->count) {
855 ret = LDB_message2entry(context, db, mem_ctx,
856 NULL, HDB_LDB_ENT_TYPE_ANY,
857 priv->msgs[priv->index++],
858 priv->realm_ref_msgs[0], entry);
860 ret = HDB_ERR_NOENTRY;
865 db->hdb_openp = NULL;
867 talloc_free(mem_ctx);
873 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
876 struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
877 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
879 struct ldb_dn *realm_dn = NULL;
880 struct ldb_result *res = NULL;
881 struct ldb_message **realm_ref_msgs = NULL;
891 priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
893 krb5_set_error_string(context, "talloc: out of memory");
900 priv->realm_ref_msgs = NULL;
903 mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
906 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
910 ret = krb5_get_default_realm(context, &realm);
916 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
917 mem_ctx, realm, &realm_ref_msgs);
923 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
924 return HDB_ERR_NOENTRY;
927 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msgs[0], "nCName", NULL);
929 priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
931 krb5_warnx(context, "LDB_firstkey: realm ok\n");
933 lret = ldb_search(ldb_ctx, realm_dn,
934 LDB_SCOPE_SUBTREE, "(objectClass=user)",
937 if (lret != LDB_SUCCESS) {
939 return HDB_ERR_NOENTRY;
942 priv->count = res->count;
943 priv->msgs = talloc_steal(priv, res->msgs);
946 db->hdb_openp = priv;
948 ret = LDB_seq(context, db, flags, entry);
952 db->hdb_openp = NULL;
954 talloc_free(mem_ctx);
959 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
962 return LDB_seq(context, db, flags, entry);
965 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
971 /* This interface is to be called by the KDC, which is expecting Samba
972 * calling conventions. It is also called by a wrapper
973 * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
976 NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx,
977 krb5_context context, struct HDB **db, const char *arg)
980 struct auth_session_info *session_info;
981 *db = talloc(mem_ctx, HDB);
983 krb5_set_error_string(context, "malloc: out of memory");
984 return NT_STATUS_NO_MEMORY;
987 (*db)->hdb_master_key_set = 0;
988 (*db)->hdb_db = NULL;
990 nt_status = auth_system_session_info(*db, &session_info);
991 if (!NT_STATUS_IS_OK(nt_status)) {
995 /* The idea here is very simple. Using Kerberos to
996 * authenticate the KDC to the LDAP server is higly likely to
999 * In future we may set this up to use EXERNAL and SSL
1000 * certificates, for now it will almost certainly be NTLMSSP
1003 cli_credentials_set_kerberos_state(session_info->credentials,
1004 CRED_DONT_USE_KERBEROS);
1006 /* Setup the link to LDB */
1007 (*db)->hdb_db = samdb_connect(*db, session_info);
1008 if ((*db)->hdb_db == NULL) {
1009 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1010 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1013 (*db)->hdb_openp = 0;
1014 (*db)->hdb_open = LDB_open;
1015 (*db)->hdb_close = LDB_close;
1016 (*db)->hdb_fetch = LDB_fetch;
1017 (*db)->hdb_store = LDB_store;
1018 (*db)->hdb_remove = LDB_remove;
1019 (*db)->hdb_firstkey = LDB_firstkey;
1020 (*db)->hdb_nextkey = LDB_nextkey;
1021 (*db)->hdb_lock = LDB_lock;
1022 (*db)->hdb_unlock = LDB_unlock;
1023 (*db)->hdb_rename = LDB_rename;
1024 /* we don't implement these, as we are not a lockable database */
1025 (*db)->hdb__get = NULL;
1026 (*db)->hdb__put = NULL;
1027 /* kadmin should not be used for deletes - use other tools instead */
1028 (*db)->hdb__del = NULL;
1029 (*db)->hdb_destroy = LDB_destroy;
1031 return NT_STATUS_OK;
1034 krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
1037 /* Disgusting, ugly hack, but it means one less private hook */
1038 nt_status = kdc_hdb_ldb_create(context->mem_ctx, context, db, arg);
1040 if (NT_STATUS_IS_OK(nt_status)) {