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 talloc_free(mem_ctx);
615 return HDB_ERR_NOENTRY;
616 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
617 talloc_free(mem_ctx);
619 } else if (!NT_STATUS_IS_OK(nt_status)) {
620 talloc_free(mem_ctx);
624 ret = LDB_message2entry(context, db, mem_ctx,
625 principal, HDB_LDB_ENT_TYPE_CLIENT,
626 msg[0], realm_ref_msg[0], entry_ex);
630 static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
632 krb5_const_principal principal,
634 hdb_entry_ex *entry_ex)
637 struct ldb_message **msg = NULL;
638 struct ldb_message **realm_ref_msg = NULL;
639 const struct ldb_dn *realm_dn;
641 krb5_principal alloc_principal = NULL;
642 if (principal->name.name_string.len != 2
643 || (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) {
645 return HDB_ERR_NOENTRY;
648 /* krbtgt case. Either us or a trusted realm */
649 if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
650 mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
652 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
653 * is in our db, then direct the caller at our primary
656 const char *dnsdomain = ldb_msg_find_string(realm_ref_msg[0], "dnsRoot", NULL);
657 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
659 krb5_set_error_string(context, "strupper_talloc: out of memory");
663 ret = krb5_copy_principal(context, principal, &alloc_principal);
668 free(alloc_principal->name.name_string.val[1]);
669 alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
670 talloc_free(realm_fixed);
671 if (!alloc_principal->name.name_string.val[1]) {
672 krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
675 principal = alloc_principal;
676 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
679 /* we should lookup trusted domains */
680 return HDB_ERR_NOENTRY;
683 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
685 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
687 principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
690 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
691 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
695 ret = LDB_message2entry(context, db, mem_ctx,
696 principal, HDB_LDB_ENT_TYPE_KRBTGT,
697 msg[0], realm_ref_msg[0], entry_ex);
699 krb5_warnx(context, "LDB_fetch: message2entry failed");
704 static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
706 krb5_const_principal principal,
708 hdb_entry_ex *entry_ex)
712 struct ldb_message **msg = NULL;
713 struct ldb_message **realm_ref_msg = NULL;
714 if (principal->name.name_string.len >= 2) {
715 /* 'normal server' case */
718 struct ldb_dn *user_dn, *domain_dn;
719 char *principal_string;
721 ret = krb5_unparse_name_norealm(context, principal, &principal_string);
726 /* At this point we may find the host is known to be
727 * in a different realm, so we should generate a
728 * referral instead */
729 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
730 mem_ctx, principal_string,
731 &user_dn, &domain_dn);
732 free(principal_string);
734 if (!NT_STATUS_IS_OK(nt_status)) {
735 return HDB_ERR_NOENTRY;
738 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
739 mem_ctx, user_dn, &msg, krb5_attrs);
742 return HDB_ERR_NOENTRY;
745 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
746 mem_ctx, NULL, &realm_ref_msg, realm_ref_attrs,
747 "ncName=%s", ldb_dn_linearize(mem_ctx, domain_dn));
750 return HDB_ERR_NOENTRY;
754 const struct ldb_dn *realm_dn;
755 /* server as client principal case, but we must not lookup userPrincipalNames */
757 realm = krb5_principal_get_realm(context, principal);
759 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
760 mem_ctx, realm, &realm_ref_msg);
762 return HDB_ERR_NOENTRY;
765 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
767 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
769 principal, HDB_LDB_ENT_TYPE_SERVER, realm_dn, &msg);
776 ret = LDB_message2entry(context, db, mem_ctx,
777 principal, HDB_LDB_ENT_TYPE_SERVER,
778 msg[0], realm_ref_msg[0], entry_ex);
780 krb5_warnx(context, "LDB_fetch: message2entry failed");
786 static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
787 krb5_const_principal principal,
789 hdb_entry_ex *entry_ex)
793 TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
796 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
800 if (flags & HDB_F_GET_CLIENT) {
801 ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex);
802 if (ret != HDB_ERR_NOENTRY) goto done;
804 if (flags & HDB_F_GET_SERVER) {
805 ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
806 if (ret != HDB_ERR_NOENTRY) goto done;
807 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
808 if (ret != HDB_ERR_NOENTRY) goto done;
810 if (flags & HDB_F_GET_KRBTGT) {
811 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
812 if (ret != HDB_ERR_NOENTRY) goto done;
816 talloc_free(mem_ctx);
820 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
822 return HDB_ERR_DB_INUSE;
825 static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal)
827 return HDB_ERR_DB_INUSE;
831 struct ldb_context *ctx;
834 struct ldb_message **msgs;
835 struct ldb_message **realm_ref_msgs;
838 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
841 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
843 hdb_entry_ex entry_ex;
844 memset(&entry_ex, '\0', sizeof(entry_ex));
847 return HDB_ERR_NOENTRY;
850 mem_ctx = talloc_named(priv, 0, "LDB_seq context");
853 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
857 if (priv->index < priv->count) {
858 ret = LDB_message2entry(context, db, mem_ctx,
859 NULL, HDB_LDB_ENT_TYPE_ANY,
860 priv->msgs[priv->index++],
861 priv->realm_ref_msgs[0], entry);
863 ret = HDB_ERR_NOENTRY;
868 db->hdb_openp = NULL;
870 talloc_free(mem_ctx);
876 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
879 struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
880 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
882 struct ldb_dn *realm_dn = NULL;
883 struct ldb_result *res = NULL;
884 struct ldb_message **realm_ref_msgs = NULL;
894 priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
896 krb5_set_error_string(context, "talloc: out of memory");
903 priv->realm_ref_msgs = NULL;
906 mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
909 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
913 ret = krb5_get_default_realm(context, &realm);
919 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
920 mem_ctx, realm, &realm_ref_msgs);
926 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
927 return HDB_ERR_NOENTRY;
930 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msgs[0], "nCName", NULL);
932 priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
934 krb5_warnx(context, "LDB_firstkey: realm ok\n");
936 lret = ldb_search(ldb_ctx, realm_dn,
937 LDB_SCOPE_SUBTREE, "(objectClass=user)",
940 if (lret != LDB_SUCCESS) {
942 return HDB_ERR_NOENTRY;
945 priv->count = res->count;
946 priv->msgs = talloc_steal(priv, res->msgs);
949 db->hdb_openp = priv;
951 ret = LDB_seq(context, db, flags, entry);
955 db->hdb_openp = NULL;
957 talloc_free(mem_ctx);
962 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
965 return LDB_seq(context, db, flags, entry);
968 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
974 /* This interface is to be called by the KDC, which is expecting Samba
975 * calling conventions. It is also called by a wrapper
976 * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
979 NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx,
980 krb5_context context, struct HDB **db, const char *arg)
983 struct auth_session_info *session_info;
984 *db = talloc(mem_ctx, HDB);
986 krb5_set_error_string(context, "malloc: out of memory");
987 return NT_STATUS_NO_MEMORY;
990 (*db)->hdb_master_key_set = 0;
991 (*db)->hdb_db = NULL;
993 nt_status = auth_system_session_info(*db, &session_info);
994 if (!NT_STATUS_IS_OK(nt_status)) {
998 /* The idea here is very simple. Using Kerberos to
999 * authenticate the KDC to the LDAP server is higly likely to
1002 * In future we may set this up to use EXERNAL and SSL
1003 * certificates, for now it will almost certainly be NTLMSSP
1006 cli_credentials_set_kerberos_state(session_info->credentials,
1007 CRED_DONT_USE_KERBEROS);
1009 /* Setup the link to LDB */
1010 (*db)->hdb_db = samdb_connect(*db, session_info);
1011 if ((*db)->hdb_db == NULL) {
1012 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1013 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1016 (*db)->hdb_openp = 0;
1017 (*db)->hdb_open = LDB_open;
1018 (*db)->hdb_close = LDB_close;
1019 (*db)->hdb_fetch = LDB_fetch;
1020 (*db)->hdb_store = LDB_store;
1021 (*db)->hdb_remove = LDB_remove;
1022 (*db)->hdb_firstkey = LDB_firstkey;
1023 (*db)->hdb_nextkey = LDB_nextkey;
1024 (*db)->hdb_lock = LDB_lock;
1025 (*db)->hdb_unlock = LDB_unlock;
1026 (*db)->hdb_rename = LDB_rename;
1027 /* we don't implement these, as we are not a lockable database */
1028 (*db)->hdb__get = NULL;
1029 (*db)->hdb__put = NULL;
1030 /* kadmin should not be used for deletes - use other tools instead */
1031 (*db)->hdb__del = NULL;
1032 (*db)->hdb_destroy = LDB_destroy;
1034 return NT_STATUS_OK;
1037 krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
1040 /* Disgusting, ugly hack, but it means one less private hook */
1041 nt_status = kdc_hdb_ldb_create(context->mem_ctx, context, db, arg);
1043 if (NT_STATUS_IS_OK(nt_status)) {