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);
200 * Construct an hdb_entry from a directory entry.
202 static krb5_error_code LDB_message2entry(krb5_context context, HDB *db,
203 TALLOC_CTX *mem_ctx, krb5_const_principal principal,
204 enum hdb_ldb_ent_type ent_type,
205 struct ldb_message *msg,
206 struct ldb_message *realm_ref_msg,
207 hdb_entry_ex *entry_ex)
209 unsigned int userAccountControl;
211 krb5_error_code ret = 0;
212 krb5_boolean is_computer = FALSE;
213 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg, "dnsRoot", NULL);
214 char *realm = strupper_talloc(mem_ctx, dnsdomain);
215 struct ldb_dn *domain_dn = samdb_result_dn((struct ldb_context *)db->hdb_db,
219 ldb_dn_new(mem_ctx, (struct ldb_context *)db->hdb_db, NULL));
221 struct hdb_ldb_private *private;
223 struct ldb_message_element *ldb_keys;
225 struct ldb_message_element *objectclasses;
226 struct ldb_val computer_val;
227 computer_val.data = discard_const_p(uint8_t,"computer");
228 computer_val.length = strlen((const char *)computer_val.data);
230 objectclasses = ldb_msg_find_element(msg, "objectClass");
232 if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
236 memset(entry_ex, 0, sizeof(*entry_ex));
239 krb5_set_error_string(context, "talloc_strdup: out of memory");
244 private = talloc(mem_ctx, struct hdb_ldb_private);
250 private->entry_ex = entry_ex;
252 talloc_set_destructor(private, hdb_ldb_destrutor);
254 entry_ex->ctx = private;
255 entry_ex->free_entry = hdb_ldb_free_entry;
257 userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
260 entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
261 if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
262 const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
263 if (!samAccountName) {
264 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
268 samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
269 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
272 ret = copy_Principal(principal, entry_ex->entry.principal);
274 krb5_clear_error_string(context);
278 /* While we have copied the client principal, tests
279 * show that Win2k3 returns the 'corrected' realm, not
280 * the client-specified realm. This code attempts to
281 * replace the client principal's realm with the one
282 * we determine from our records */
284 /* this has to be with malloc() */
285 strdup_realm = strdup(realm);
288 krb5_clear_error_string(context);
291 free(*krb5_princ_realm(context, entry_ex->entry.principal));
292 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
295 entry_ex->entry.kvno = ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0);
297 entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
299 if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
300 entry_ex->entry.flags.invalid = 0;
301 entry_ex->entry.flags.server = 1;
302 entry_ex->entry.flags.forwardable = 1;
303 entry_ex->entry.flags.ok_as_delegate = 1;
306 if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
307 if (!is_computer && !ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL)) {
308 entry_ex->entry.flags.server = 0;
312 /* use 'whenCreated' */
313 entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
315 entry_ex->entry.created_by.principal = NULL;
317 entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
318 if (entry_ex->entry.modified_by == NULL) {
319 krb5_set_error_string(context, "malloc: out of memory");
324 /* use 'whenChanged' */
325 entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
327 entry_ex->entry.modified_by->principal = NULL;
329 entry_ex->entry.valid_start = NULL;
331 acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
332 if ((acct_expiry == (NTTIME)-1) ||
333 (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
334 entry_ex->entry.valid_end = NULL;
336 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
337 if (entry_ex->entry.valid_end == NULL) {
341 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
344 if (ent_type != HDB_LDB_ENT_TYPE_KRBTGT) {
345 NTTIME must_change_time
346 = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
348 if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) {
349 entry_ex->entry.pw_end = NULL;
351 entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
352 if (entry_ex->entry.pw_end == NULL) {
356 *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
359 entry_ex->entry.pw_end = NULL;
362 entry_ex->entry.max_life = NULL;
364 entry_ex->entry.max_renew = NULL;
366 entry_ex->entry.generation = NULL;
368 /* Get krb5Key from the db */
370 ldb_keys = ldb_msg_find_element(msg, "krb5Key");
373 /* oh, no password. Apparently (comment in
374 * hdb-ldap.c) this violates the ASN.1, but this
375 * allows an entry with no keys (yet). */
376 entry_ex->entry.keys.val = NULL;
377 entry_ex->entry.keys.len = 0;
379 /* allocate space to decode into */
380 entry_ex->entry.keys.val = calloc(ldb_keys->num_values, sizeof(Key));
381 if (entry_ex->entry.keys.val == NULL) {
386 entry_ex->entry.keys.len = 0;
388 /* Decode Kerberos keys into the hdb structure */
389 for (i=0; i < ldb_keys->num_values; i++) {
392 ret = decode_Key(ldb_keys->values[i].data, ldb_keys->values[i].length,
395 /* Could be bougus data in the entry, or out of memory */
399 if (userAccountControl & UF_USE_DES_KEY_ONLY) {
400 switch (key.key.keytype) {
402 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
403 entry_ex->entry.keys.len++;
405 /* We must use DES keys only */
409 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
410 entry_ex->entry.keys.len++;
415 entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
416 if (entry_ex->entry.etypes == NULL) {
417 krb5_clear_error_string(context);
421 entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
422 entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
423 if (entry_ex->entry.etypes->val == NULL) {
424 krb5_clear_error_string(context);
428 for (i=0; i < entry_ex->entry.etypes->len; i++) {
429 entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype;
433 private->msg = talloc_steal(private, msg);
434 private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
435 private->samdb = (struct ldb_context *)db->hdb_db;
437 entry_ex->check_client_access = hdb_ldb_check_client_access;
438 entry_ex->authz_data_tgs_req = hdb_ldb_authz_data_tgs_req;
439 entry_ex->authz_data_as_req = hdb_ldb_authz_data_as_req;
443 /* This doesn't free ent itself, that is for the eventual caller to do */
444 hdb_free_entry(context, entry_ex);
446 talloc_steal(db, entry_ex->ctx);
452 static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
454 krb5_const_principal principal,
455 enum hdb_ldb_ent_type ent_type,
456 struct ldb_dn *realm_dn,
457 struct ldb_message ***pmsg)
462 const char * const *princ_attrs = krb5_attrs;
465 char *short_princ_talloc;
467 struct ldb_result *res = NULL;
469 ret = krb5_unparse_name_flags(context, principal, KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ);
472 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
473 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
477 short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
479 if (!short_princ_talloc) {
480 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
485 case HDB_LDB_ENT_TYPE_CLIENT:
488 case HDB_LDB_ENT_TYPE_ANY:
491 case HDB_LDB_ENT_TYPE_KRBTGT:
492 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
495 case HDB_LDB_ENT_TYPE_SERVER:
496 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
502 krb5_set_error_string(context, "talloc_asprintf: out of memory");
506 lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
508 if (lret != LDB_SUCCESS) {
509 DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
510 return HDB_ERR_NOENTRY;
511 } else if (res->count == 0 || res->count > 1) {
512 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;
530 struct ldb_dn *partitions_basedn = samdb_partitions_dn(ldb_ctx, mem_ctx);
532 cross_ref_filter = talloc_asprintf(mem_ctx,
533 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
535 if (!cross_ref_filter) {
536 krb5_set_error_string(context, "asprintf: out of memory");
540 ret = ldb_search(ldb_ctx, partitions_basedn, LDB_SCOPE_SUBTREE, cross_ref_filter, realm_ref_attrs, &cross_ref_res);
542 if (ret != LDB_SUCCESS) {
543 DEBUG(3, ("Failed to search for %s: %s\n", cross_ref_filter, ldb_errstring(ldb_ctx)));
544 talloc_free(cross_ref_res);
545 return HDB_ERR_NOENTRY;
546 } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) {
547 DEBUG(3, ("Failed find a single entry for %s: got %d\n", cross_ref_filter, cross_ref_res->count));
548 talloc_free(cross_ref_res);
549 return HDB_ERR_NOENTRY;
553 *pmsg = cross_ref_res->msgs;
554 talloc_steal(mem_ctx, cross_ref_res->msgs);
556 talloc_free(cross_ref_res);
562 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
564 if (db->hdb_master_key_set) {
565 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
566 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
567 return HDB_ERR_NOENTRY;
573 static krb5_error_code LDB_close(krb5_context context, HDB *db)
578 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
583 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
588 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
590 return HDB_ERR_DB_INUSE;
593 static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db,
595 krb5_const_principal principal,
597 hdb_entry_ex *entry_ex) {
599 char *principal_string;
601 struct ldb_message **msg = NULL;
602 struct ldb_message **realm_ref_msg = NULL;
604 ret = krb5_unparse_name(context, principal, &principal_string);
610 nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
611 mem_ctx, principal_string,
612 &msg, &realm_ref_msg);
613 free(principal_string);
614 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
615 return HDB_ERR_NOENTRY;
616 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
618 } else if (!NT_STATUS_IS_OK(nt_status)) {
622 ret = LDB_message2entry(context, db, mem_ctx,
623 principal, HDB_LDB_ENT_TYPE_CLIENT,
624 msg[0], realm_ref_msg[0], entry_ex);
628 static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
630 krb5_const_principal principal,
632 hdb_entry_ex *entry_ex)
635 struct ldb_message **msg = NULL;
636 struct ldb_message **realm_ref_msg = NULL;
637 struct ldb_dn *realm_dn;
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 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
651 /* we should lookup trusted domains */
652 return HDB_ERR_NOENTRY;
655 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
657 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
659 principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
662 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
663 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
667 ret = LDB_message2entry(context, db, mem_ctx,
668 principal, HDB_LDB_ENT_TYPE_KRBTGT,
669 msg[0], realm_ref_msg[0], entry_ex);
671 krb5_warnx(context, "LDB_fetch: message2entry failed");
676 static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
678 krb5_const_principal principal,
680 hdb_entry_ex *entry_ex)
684 struct ldb_message **msg = NULL;
685 struct ldb_message **realm_ref_msg = NULL;
686 struct ldb_dn *partitions_basedn = samdb_partitions_dn(db->hdb_db, mem_ctx);
687 if (principal->name.name_string.len >= 2) {
688 /* 'normal server' case */
691 struct ldb_dn *user_dn, *domain_dn;
692 char *principal_string;
694 ret = krb5_unparse_name_flags(context, principal,
695 KRB5_PRINCIPAL_UNPARSE_NO_REALM,
701 /* At this point we may find the host is known to be
702 * in a different realm, so we should generate a
703 * referral instead */
704 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
705 mem_ctx, principal_string,
706 &user_dn, &domain_dn);
707 free(principal_string);
709 if (!NT_STATUS_IS_OK(nt_status)) {
710 return HDB_ERR_NOENTRY;
713 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
714 mem_ctx, user_dn, &msg, krb5_attrs);
717 return HDB_ERR_NOENTRY;
720 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
721 mem_ctx, partitions_basedn, &realm_ref_msg, realm_ref_attrs,
722 "ncName=%s", ldb_dn_linearize(mem_ctx, domain_dn));
725 return HDB_ERR_NOENTRY;
729 struct ldb_dn *realm_dn;
730 /* server as client principal case, but we must not lookup userPrincipalNames */
732 realm = krb5_principal_get_realm(context, principal);
734 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
735 mem_ctx, realm, &realm_ref_msg);
737 return HDB_ERR_NOENTRY;
740 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
742 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
744 principal, HDB_LDB_ENT_TYPE_SERVER, realm_dn, &msg);
751 ret = LDB_message2entry(context, db, mem_ctx,
752 principal, HDB_LDB_ENT_TYPE_SERVER,
753 msg[0], realm_ref_msg[0], entry_ex);
755 krb5_warnx(context, "LDB_fetch: message2entry failed");
761 static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
762 krb5_const_principal principal,
764 hdb_entry_ex *entry_ex)
766 krb5_error_code ret = HDB_ERR_NOENTRY;
768 TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
771 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
775 if (flags & HDB_F_GET_CLIENT) {
776 ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex);
777 if (ret != HDB_ERR_NOENTRY) goto done;
779 if (flags & HDB_F_GET_SERVER) {
780 ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
781 if (ret != HDB_ERR_NOENTRY) goto done;
782 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
783 if (ret != HDB_ERR_NOENTRY) goto done;
785 if (flags & HDB_F_GET_KRBTGT) {
786 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
787 if (ret != HDB_ERR_NOENTRY) goto done;
791 talloc_free(mem_ctx);
795 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
797 return HDB_ERR_DB_INUSE;
800 static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal)
802 return HDB_ERR_DB_INUSE;
806 struct ldb_context *ctx;
809 struct ldb_message **msgs;
810 struct ldb_message **realm_ref_msgs;
813 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
816 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
818 hdb_entry_ex entry_ex;
819 memset(&entry_ex, '\0', sizeof(entry_ex));
822 return HDB_ERR_NOENTRY;
825 mem_ctx = talloc_named(priv, 0, "LDB_seq context");
828 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
832 if (priv->index < priv->count) {
833 ret = LDB_message2entry(context, db, mem_ctx,
834 NULL, HDB_LDB_ENT_TYPE_ANY,
835 priv->msgs[priv->index++],
836 priv->realm_ref_msgs[0], entry);
838 ret = HDB_ERR_NOENTRY;
843 db->hdb_openp = NULL;
845 talloc_free(mem_ctx);
851 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
854 struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
855 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
857 struct ldb_dn *realm_dn = NULL;
858 struct ldb_result *res = NULL;
859 struct ldb_message **realm_ref_msgs = NULL;
869 priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
871 krb5_set_error_string(context, "talloc: out of memory");
878 priv->realm_ref_msgs = NULL;
881 mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
884 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
888 ret = krb5_get_default_realm(context, &realm);
894 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
895 mem_ctx, realm, &realm_ref_msgs);
901 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
902 return HDB_ERR_NOENTRY;
905 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msgs[0], "nCName", NULL);
907 priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
909 lret = ldb_search(ldb_ctx, realm_dn,
910 LDB_SCOPE_SUBTREE, "(objectClass=user)",
913 if (lret != LDB_SUCCESS) {
915 return HDB_ERR_NOENTRY;
918 priv->count = res->count;
919 priv->msgs = talloc_steal(priv, res->msgs);
922 db->hdb_openp = priv;
924 ret = LDB_seq(context, db, flags, entry);
928 db->hdb_openp = NULL;
930 talloc_free(mem_ctx);
935 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
938 return LDB_seq(context, db, flags, entry);
941 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
947 /* This interface is to be called by the KDC, which is expecting Samba
948 * calling conventions. It is also called by a wrapper
949 * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
952 NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx,
953 krb5_context context, struct HDB **db, const char *arg)
956 struct auth_session_info *session_info;
957 *db = talloc(mem_ctx, HDB);
959 krb5_set_error_string(context, "malloc: out of memory");
960 return NT_STATUS_NO_MEMORY;
963 (*db)->hdb_master_key_set = 0;
964 (*db)->hdb_db = NULL;
966 nt_status = auth_system_session_info(*db, &session_info);
967 if (!NT_STATUS_IS_OK(nt_status)) {
971 /* The idea here is very simple. Using Kerberos to
972 * authenticate the KDC to the LDAP server is higly likely to
975 * In future we may set this up to use EXERNAL and SSL
976 * certificates, for now it will almost certainly be NTLMSSP
979 cli_credentials_set_kerberos_state(session_info->credentials,
980 CRED_DONT_USE_KERBEROS);
982 /* Setup the link to LDB */
983 (*db)->hdb_db = samdb_connect(*db, session_info);
984 if ((*db)->hdb_db == NULL) {
985 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
986 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
989 (*db)->hdb_openp = 0;
990 (*db)->hdb_open = LDB_open;
991 (*db)->hdb_close = LDB_close;
992 (*db)->hdb_fetch = LDB_fetch;
993 (*db)->hdb_store = LDB_store;
994 (*db)->hdb_remove = LDB_remove;
995 (*db)->hdb_firstkey = LDB_firstkey;
996 (*db)->hdb_nextkey = LDB_nextkey;
997 (*db)->hdb_lock = LDB_lock;
998 (*db)->hdb_unlock = LDB_unlock;
999 (*db)->hdb_rename = LDB_rename;
1000 /* we don't implement these, as we are not a lockable database */
1001 (*db)->hdb__get = NULL;
1002 (*db)->hdb__put = NULL;
1003 /* kadmin should not be used for deletes - use other tools instead */
1004 (*db)->hdb__del = NULL;
1005 (*db)->hdb_destroy = LDB_destroy;
1007 return NT_STATUS_OK;
1010 krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
1013 /* Disgusting, ugly hack, but it means one less private hook */
1014 nt_status = kdc_hdb_ldb_create(context->mem_ctx, context, db, arg);
1016 if (NT_STATUS_IS_OK(nt_status)) {