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",
69 "msDS-KeyVersionNumber",
77 static const char *realm_ref_attrs[] = {
83 static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val)
89 gentime = ldb_msg_find_attr_as_string(msg, attr, NULL);
93 tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm);
101 static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type)
103 HDBFlags flags = int2HDBFlags(0);
105 /* we don't allow kadmin deletes */
108 /* mark the principal as invalid to start with */
113 /* All accounts are servers, but this may be disabled again in the caller */
116 /* Account types - clear the invalid bit if it turns out to be valid */
117 if (userAccountControl & UF_NORMAL_ACCOUNT) {
118 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
124 if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
125 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
130 if (userAccountControl & UF_WORKSTATION_TRUST_ACCOUNT) {
131 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
136 if (userAccountControl & UF_SERVER_TRUST_ACCOUNT) {
137 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
143 /* Not permitted to act as a client if disabled */
144 if (userAccountControl & UF_ACCOUNTDISABLE) {
147 if (userAccountControl & UF_LOCKOUT) {
151 if (userAccountControl & UF_PASSWORD_NOTREQD) {
156 UF_PASSWORD_CANT_CHANGE and UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED are irrelevent
158 if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) {
162 /* UF_DONT_EXPIRE_PASSWD and UF_USE_DES_KEY_ONLY handled in LDB_message2entry() */
165 if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
169 if (userAccountControl & UF_SMARTCARD_REQUIRED) {
170 flags.require_hwauth = 1;
172 if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) {
173 flags.ok_as_delegate = 1;
175 if (!(userAccountControl & UF_NOT_DELEGATED)) {
176 flags.forwardable = 1;
180 if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) {
181 flags.require_preauth = 0;
183 flags.require_preauth = 1;
189 static int hdb_ldb_destrutor(struct hdb_ldb_private *private)
191 hdb_entry_ex *entry_ex = private->entry_ex;
192 free_hdb_entry(&entry_ex->entry);
196 static void hdb_ldb_free_entry(krb5_context context, hdb_entry_ex *entry_ex)
198 talloc_free(entry_ex->ctx);
201 static krb5_error_code LDB_message2entry_keys(krb5_context context,
203 struct ldb_message *msg,
204 unsigned int userAccountControl,
205 hdb_entry_ex *entry_ex)
207 krb5_error_code ret = 0;
208 struct ldb_message_element *krb5keys;
209 struct samr_Password *hash;
211 bool arcfour_needed = true;
212 uint32_t allocated_keys = 0;
214 entry_ex->entry.keys.val = NULL;
215 entry_ex->entry.keys.len = 0;
217 /* Get krb5Key from the db */
219 krb5keys = ldb_msg_find_element(msg, "krb5Key");
220 hash = samdb_result_hash(mem_ctx, msg, "unicodePwd");
223 allocated_keys = krb5keys->num_values;
230 if (allocated_keys == 0) {
231 /* oh, no password. Apparently (comment in
232 * hdb-ldap.c) this violates the ASN.1, but this
233 * allows an entry with no keys (yet). */
237 /* allocate space to decode into */
238 entry_ex->entry.keys.len = 0;
239 entry_ex->entry.keys.val = calloc(allocated_keys, sizeof(Key));
240 if (entry_ex->entry.keys.val == NULL) {
245 /* Decode Kerberos keys into the hdb structure */
246 for (i=0; (krb5keys && i < krb5keys->num_values); i++) {
249 ret = decode_Key(krb5keys->values[i].data, krb5keys->values[i].length,
252 /* Could be bougus data in the entry, or out of memory */
256 if (userAccountControl & UF_USE_DES_KEY_ONLY) {
257 switch (key.key.keytype) {
259 arcfour_needed = false;
260 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
261 entry_ex->entry.keys.len++;
264 /* We must use DES keys only */
268 switch (key.key.keytype) {
269 case KEYTYPE_ARCFOUR:
270 arcfour_needed = false;
275 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
276 entry_ex->entry.keys.len++;
280 if (arcfour_needed && hash) {
284 key.salt = NULL; /* No salt for this enc type */
286 ret = krb5_keyblock_init(context,
288 hash->hash, sizeof(hash->hash),
294 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
295 entry_ex->entry.keys.len++;
299 if (ret != 0 && entry_ex->entry.keys.val) {
300 free(entry_ex->entry.keys.val);
301 entry_ex->entry.keys.val = NULL;
302 entry_ex->entry.keys.len = 0;
308 * Construct an hdb_entry from a directory entry.
310 static krb5_error_code LDB_message2entry(krb5_context context, HDB *db,
311 TALLOC_CTX *mem_ctx, krb5_const_principal principal,
312 enum hdb_ldb_ent_type ent_type,
313 struct ldb_message *msg,
314 struct ldb_message *realm_ref_msg,
315 hdb_entry_ex *entry_ex)
317 unsigned int userAccountControl;
319 krb5_error_code ret = 0;
320 krb5_boolean is_computer = FALSE;
321 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg, "dnsRoot", NULL);
322 char *realm = strupper_talloc(mem_ctx, dnsdomain);
323 struct ldb_dn *domain_dn = samdb_result_dn((struct ldb_context *)db->hdb_db,
327 ldb_dn_new(mem_ctx, (struct ldb_context *)db->hdb_db, NULL));
329 struct hdb_ldb_private *private;
332 struct ldb_message_element *objectclasses;
333 struct ldb_val computer_val;
334 computer_val.data = discard_const_p(uint8_t,"computer");
335 computer_val.length = strlen((const char *)computer_val.data);
337 objectclasses = ldb_msg_find_element(msg, "objectClass");
339 if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
343 memset(entry_ex, 0, sizeof(*entry_ex));
346 krb5_set_error_string(context, "talloc_strdup: out of memory");
351 private = talloc(mem_ctx, struct hdb_ldb_private);
357 private->entry_ex = entry_ex;
359 talloc_set_destructor(private, hdb_ldb_destrutor);
361 entry_ex->ctx = private;
362 entry_ex->free_entry = hdb_ldb_free_entry;
364 userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
367 entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
368 if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
369 const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
370 if (!samAccountName) {
371 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
375 samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
376 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
379 ret = copy_Principal(principal, entry_ex->entry.principal);
381 krb5_clear_error_string(context);
385 /* While we have copied the client principal, tests
386 * show that Win2k3 returns the 'corrected' realm, not
387 * the client-specified realm. This code attempts to
388 * replace the client principal's realm with the one
389 * we determine from our records */
391 /* this has to be with malloc() */
392 strdup_realm = strdup(realm);
395 krb5_clear_error_string(context);
398 free(*krb5_princ_realm(context, entry_ex->entry.principal));
399 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
402 entry_ex->entry.kvno = ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0);
404 entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
406 if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
407 entry_ex->entry.flags.invalid = 0;
408 entry_ex->entry.flags.server = 1;
409 entry_ex->entry.flags.forwardable = 1;
410 entry_ex->entry.flags.ok_as_delegate = 1;
413 if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
414 if (!is_computer && !ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL)) {
415 entry_ex->entry.flags.server = 0;
419 /* use 'whenCreated' */
420 entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
422 entry_ex->entry.created_by.principal = NULL;
424 entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
425 if (entry_ex->entry.modified_by == NULL) {
426 krb5_set_error_string(context, "malloc: out of memory");
431 /* use 'whenChanged' */
432 entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
434 entry_ex->entry.modified_by->principal = NULL;
436 entry_ex->entry.valid_start = NULL;
438 acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
439 if ((acct_expiry == (NTTIME)-1) ||
440 (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
441 entry_ex->entry.valid_end = NULL;
443 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
444 if (entry_ex->entry.valid_end == NULL) {
448 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
451 if (ent_type != HDB_LDB_ENT_TYPE_KRBTGT) {
452 NTTIME must_change_time
453 = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
455 if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) {
456 entry_ex->entry.pw_end = NULL;
458 entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
459 if (entry_ex->entry.pw_end == NULL) {
463 *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
466 entry_ex->entry.pw_end = NULL;
469 entry_ex->entry.max_life = NULL;
471 entry_ex->entry.max_renew = NULL;
473 entry_ex->entry.generation = NULL;
475 /* Get keys from the db */
476 ret = LDB_message2entry_keys(context, private, msg, userAccountControl, entry_ex);
478 /* Could be bougus data in the entry, or out of memory */
482 entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
483 if (entry_ex->entry.etypes == NULL) {
484 krb5_clear_error_string(context);
488 entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
489 entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
490 if (entry_ex->entry.etypes->val == NULL) {
491 krb5_clear_error_string(context);
495 for (i=0; i < entry_ex->entry.etypes->len; i++) {
496 entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype;
500 private->msg = talloc_steal(private, msg);
501 private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
502 private->samdb = (struct ldb_context *)db->hdb_db;
506 /* This doesn't free ent itself, that is for the eventual caller to do */
507 hdb_free_entry(context, entry_ex);
509 talloc_steal(db, entry_ex->ctx);
515 static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
517 krb5_const_principal principal,
518 enum hdb_ldb_ent_type ent_type,
519 struct ldb_dn *realm_dn,
520 struct ldb_message ***pmsg)
525 const char * const *princ_attrs = krb5_attrs;
528 char *short_princ_talloc;
530 struct ldb_result *res = NULL;
532 ret = krb5_unparse_name_flags(context, principal, KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ);
535 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
536 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
540 short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
542 if (!short_princ_talloc) {
543 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
548 case HDB_LDB_ENT_TYPE_CLIENT:
551 case HDB_LDB_ENT_TYPE_ANY:
554 case HDB_LDB_ENT_TYPE_KRBTGT:
555 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
558 case HDB_LDB_ENT_TYPE_SERVER:
559 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
565 krb5_set_error_string(context, "talloc_asprintf: out of memory");
569 lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
571 if (lret != LDB_SUCCESS) {
572 DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
573 return HDB_ERR_NOENTRY;
574 } else if (res->count == 0 || res->count > 1) {
575 DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count));
577 return HDB_ERR_NOENTRY;
579 talloc_steal(mem_ctx, res->msgs);
585 static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
588 struct ldb_message ***pmsg)
591 struct ldb_result *cross_ref_res;
592 struct ldb_dn *partitions_basedn = samdb_partitions_dn(ldb_ctx, mem_ctx);
594 ret = ldb_search_exp_fmt(ldb_ctx, mem_ctx, &cross_ref_res,
595 partitions_basedn, LDB_SCOPE_SUBTREE, realm_ref_attrs,
596 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
599 if (ret != LDB_SUCCESS) {
600 DEBUG(3, ("Failed to search to lookup realm(%s): %s\n", realm, ldb_errstring(ldb_ctx)));
601 talloc_free(cross_ref_res);
602 return HDB_ERR_NOENTRY;
603 } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) {
604 DEBUG(3, ("Failed find a single entry for realm %s: got %d\n", realm, cross_ref_res->count));
605 talloc_free(cross_ref_res);
606 return HDB_ERR_NOENTRY;
610 *pmsg = cross_ref_res->msgs;
611 talloc_steal(mem_ctx, cross_ref_res->msgs);
613 talloc_free(cross_ref_res);
619 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
621 if (db->hdb_master_key_set) {
622 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
623 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
624 return HDB_ERR_NOENTRY;
630 static krb5_error_code LDB_close(krb5_context context, HDB *db)
635 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
640 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
645 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
647 return HDB_ERR_DB_INUSE;
650 static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db,
652 krb5_const_principal principal,
654 hdb_entry_ex *entry_ex) {
656 char *principal_string;
658 struct ldb_message **msg = NULL;
659 struct ldb_message **realm_ref_msg = NULL;
661 ret = krb5_unparse_name(context, principal, &principal_string);
667 nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
668 mem_ctx, principal_string,
669 &msg, &realm_ref_msg);
670 free(principal_string);
671 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
672 return HDB_ERR_NOENTRY;
673 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
675 } else if (!NT_STATUS_IS_OK(nt_status)) {
679 ret = LDB_message2entry(context, db, mem_ctx,
680 principal, HDB_LDB_ENT_TYPE_CLIENT,
681 msg[0], realm_ref_msg[0], entry_ex);
685 static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
687 krb5_const_principal principal,
689 hdb_entry_ex *entry_ex)
692 struct ldb_message **msg = NULL;
693 struct ldb_message **realm_ref_msg = NULL;
694 struct ldb_dn *realm_dn;
696 krb5_principal alloc_principal = NULL;
697 if (principal->name.name_string.len != 2
698 || (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) {
700 return HDB_ERR_NOENTRY;
703 /* krbtgt case. Either us or a trusted realm */
704 if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
705 mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
707 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
708 * is in our db, then direct the caller at our primary
711 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg[0], "dnsRoot", NULL);
712 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
714 krb5_set_error_string(context, "strupper_talloc: out of memory");
718 ret = krb5_copy_principal(context, principal, &alloc_principal);
723 free(alloc_principal->name.name_string.val[1]);
724 alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
725 talloc_free(realm_fixed);
726 if (!alloc_principal->name.name_string.val[1]) {
727 krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
730 principal = alloc_principal;
731 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
733 /* we should lookup trusted domains */
734 return HDB_ERR_NOENTRY;
737 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
739 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
741 principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
744 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
745 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
749 ret = LDB_message2entry(context, db, mem_ctx,
750 principal, HDB_LDB_ENT_TYPE_KRBTGT,
751 msg[0], realm_ref_msg[0], entry_ex);
753 krb5_warnx(context, "LDB_fetch: message2entry failed");
758 static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
760 krb5_const_principal principal,
762 hdb_entry_ex *entry_ex)
766 struct ldb_message **msg = NULL;
767 struct ldb_message **realm_ref_msg = NULL;
768 struct ldb_dn *partitions_basedn = samdb_partitions_dn(db->hdb_db, mem_ctx);
769 if (principal->name.name_string.len >= 2) {
770 /* 'normal server' case */
773 struct ldb_dn *user_dn, *domain_dn;
774 char *principal_string;
776 ret = krb5_unparse_name_flags(context, principal,
777 KRB5_PRINCIPAL_UNPARSE_NO_REALM,
783 /* At this point we may find the host is known to be
784 * in a different realm, so we should generate a
785 * referral instead */
786 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
787 mem_ctx, principal_string,
788 &user_dn, &domain_dn);
789 free(principal_string);
791 if (!NT_STATUS_IS_OK(nt_status)) {
792 return HDB_ERR_NOENTRY;
795 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
796 mem_ctx, user_dn, &msg, krb5_attrs);
799 return HDB_ERR_NOENTRY;
802 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
803 mem_ctx, partitions_basedn, &realm_ref_msg, realm_ref_attrs,
804 "ncName=%s", ldb_dn_get_linearized(domain_dn));
807 return HDB_ERR_NOENTRY;
811 struct ldb_dn *realm_dn;
812 /* server as client principal case, but we must not lookup userPrincipalNames */
814 realm = krb5_principal_get_realm(context, principal);
816 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
817 mem_ctx, realm, &realm_ref_msg);
819 return HDB_ERR_NOENTRY;
822 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
824 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
826 principal, HDB_LDB_ENT_TYPE_SERVER, realm_dn, &msg);
833 ret = LDB_message2entry(context, db, mem_ctx,
834 principal, HDB_LDB_ENT_TYPE_SERVER,
835 msg[0], realm_ref_msg[0], entry_ex);
837 krb5_warnx(context, "LDB_fetch: message2entry failed");
843 static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
844 krb5_const_principal principal,
846 hdb_entry_ex *entry_ex)
848 krb5_error_code ret = HDB_ERR_NOENTRY;
850 TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
853 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
857 if (flags & HDB_F_GET_CLIENT) {
858 ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex);
859 if (ret != HDB_ERR_NOENTRY) goto done;
861 if (flags & HDB_F_GET_SERVER) {
862 ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
863 if (ret != HDB_ERR_NOENTRY) goto done;
864 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
865 if (ret != HDB_ERR_NOENTRY) goto done;
867 if (flags & HDB_F_GET_KRBTGT) {
868 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
869 if (ret != HDB_ERR_NOENTRY) goto done;
873 talloc_free(mem_ctx);
877 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
879 return HDB_ERR_DB_INUSE;
882 static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal)
884 return HDB_ERR_DB_INUSE;
888 struct ldb_context *ctx;
891 struct ldb_message **msgs;
892 struct ldb_message **realm_ref_msgs;
895 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
898 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
900 hdb_entry_ex entry_ex;
901 memset(&entry_ex, '\0', sizeof(entry_ex));
904 return HDB_ERR_NOENTRY;
907 mem_ctx = talloc_named(priv, 0, "LDB_seq context");
910 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
914 if (priv->index < priv->count) {
915 ret = LDB_message2entry(context, db, mem_ctx,
916 NULL, HDB_LDB_ENT_TYPE_ANY,
917 priv->msgs[priv->index++],
918 priv->realm_ref_msgs[0], entry);
920 ret = HDB_ERR_NOENTRY;
925 db->hdb_openp = NULL;
927 talloc_free(mem_ctx);
933 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
936 struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
937 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
939 struct ldb_dn *realm_dn = NULL;
940 struct ldb_result *res = NULL;
941 struct ldb_message **realm_ref_msgs = NULL;
951 priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
953 krb5_set_error_string(context, "talloc: out of memory");
960 priv->realm_ref_msgs = NULL;
963 mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
966 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
970 ret = krb5_get_default_realm(context, &realm);
976 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
977 mem_ctx, realm, &realm_ref_msgs);
983 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
984 return HDB_ERR_NOENTRY;
987 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msgs[0], "nCName", NULL);
989 priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
991 lret = ldb_search(ldb_ctx, realm_dn,
992 LDB_SCOPE_SUBTREE, "(objectClass=user)",
995 if (lret != LDB_SUCCESS) {
997 return HDB_ERR_NOENTRY;
1000 priv->count = res->count;
1001 priv->msgs = talloc_steal(priv, res->msgs);
1004 db->hdb_openp = priv;
1006 ret = LDB_seq(context, db, flags, entry);
1010 db->hdb_openp = NULL;
1012 talloc_free(mem_ctx);
1017 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
1018 hdb_entry_ex *entry)
1020 return LDB_seq(context, db, flags, entry);
1023 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
1029 /* This interface is to be called by the KDC, which is expecting Samba
1030 * calling conventions. It is also called by a wrapper
1031 * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
1034 NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx,
1035 krb5_context context, struct HDB **db, const char *arg)
1038 struct auth_session_info *session_info;
1039 *db = talloc(mem_ctx, HDB);
1041 krb5_set_error_string(context, "malloc: out of memory");
1042 return NT_STATUS_NO_MEMORY;
1045 (*db)->hdb_master_key_set = 0;
1046 (*db)->hdb_db = NULL;
1048 nt_status = auth_system_session_info(*db, &session_info);
1049 if (!NT_STATUS_IS_OK(nt_status)) {
1053 /* The idea here is very simple. Using Kerberos to
1054 * authenticate the KDC to the LDAP server is higly likely to
1057 * In future we may set this up to use EXERNAL and SSL
1058 * certificates, for now it will almost certainly be NTLMSSP
1061 cli_credentials_set_kerberos_state(session_info->credentials,
1062 CRED_DONT_USE_KERBEROS);
1064 /* Setup the link to LDB */
1065 (*db)->hdb_db = samdb_connect(*db, session_info);
1066 if ((*db)->hdb_db == NULL) {
1067 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1068 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1071 (*db)->hdb_openp = 0;
1072 (*db)->hdb_open = LDB_open;
1073 (*db)->hdb_close = LDB_close;
1074 (*db)->hdb_fetch = LDB_fetch;
1075 (*db)->hdb_store = LDB_store;
1076 (*db)->hdb_remove = LDB_remove;
1077 (*db)->hdb_firstkey = LDB_firstkey;
1078 (*db)->hdb_nextkey = LDB_nextkey;
1079 (*db)->hdb_lock = LDB_lock;
1080 (*db)->hdb_unlock = LDB_unlock;
1081 (*db)->hdb_rename = LDB_rename;
1082 /* we don't implement these, as we are not a lockable database */
1083 (*db)->hdb__get = NULL;
1084 (*db)->hdb__put = NULL;
1085 /* kadmin should not be used for deletes - use other tools instead */
1086 (*db)->hdb__del = NULL;
1087 (*db)->hdb_destroy = LDB_destroy;
1089 return NT_STATUS_OK;
1092 krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
1095 /* The global kdc_mem_ctx, Disgusting, ugly hack, but it means one less private hook */
1096 nt_status = kdc_hdb_ldb_create(kdc_mem_ctx, context, db, arg);
1098 if (NT_STATUS_IS_OK(nt_status)) {