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(mem_ctx, realm_ref_msg, "nCName", ldb_dn_new(mem_ctx));
217 struct hdb_ldb_private *private;
219 struct ldb_message_element *ldb_keys;
221 struct ldb_message_element *objectclasses;
222 struct ldb_val computer_val;
223 computer_val.data = discard_const_p(uint8_t,"computer");
224 computer_val.length = strlen((const char *)computer_val.data);
226 objectclasses = ldb_msg_find_element(msg, "objectClass");
228 if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
232 memset(entry_ex, 0, sizeof(*entry_ex));
235 krb5_set_error_string(context, "talloc_strdup: out of memory");
240 private = talloc(mem_ctx, struct hdb_ldb_private);
246 private->entry_ex = entry_ex;
248 talloc_set_destructor(private, hdb_ldb_destrutor);
250 entry_ex->ctx = private;
251 entry_ex->free_entry = hdb_ldb_free_entry;
253 userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
256 entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
257 if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
258 const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
259 if (!samAccountName) {
260 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
264 samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
265 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
268 ret = copy_Principal(principal, entry_ex->entry.principal);
270 krb5_clear_error_string(context);
274 /* While we have copied the client principal, tests
275 * show that Win2k3 returns the 'corrected' realm, not
276 * the client-specified realm. This code attempts to
277 * replace the client principal's realm with the one
278 * we determine from our records */
280 /* this has to be with malloc() */
281 strdup_realm = strdup(realm);
284 krb5_clear_error_string(context);
287 free(*krb5_princ_realm(context, entry_ex->entry.principal));
288 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
291 entry_ex->entry.kvno = ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0);
293 entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
295 if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
296 entry_ex->entry.flags.invalid = 0;
297 entry_ex->entry.flags.server = 1;
298 entry_ex->entry.flags.forwardable = 1;
299 entry_ex->entry.flags.ok_as_delegate = 1;
302 if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
303 if (!is_computer && !ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL)) {
304 entry_ex->entry.flags.server = 0;
308 /* use 'whenCreated' */
309 entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
311 entry_ex->entry.created_by.principal = NULL;
313 entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
314 if (entry_ex->entry.modified_by == NULL) {
315 krb5_set_error_string(context, "malloc: out of memory");
320 /* use 'whenChanged' */
321 entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
323 entry_ex->entry.modified_by->principal = NULL;
325 entry_ex->entry.valid_start = NULL;
327 acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
328 if ((acct_expiry == (NTTIME)-1) ||
329 (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
330 entry_ex->entry.valid_end = NULL;
332 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
333 if (entry_ex->entry.valid_end == NULL) {
337 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
340 if (ent_type != HDB_LDB_ENT_TYPE_KRBTGT) {
341 NTTIME must_change_time
342 = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
344 if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) {
345 entry_ex->entry.pw_end = NULL;
347 entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
348 if (entry_ex->entry.pw_end == NULL) {
352 *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
355 entry_ex->entry.pw_end = NULL;
358 entry_ex->entry.max_life = NULL;
360 entry_ex->entry.max_renew = NULL;
362 entry_ex->entry.generation = NULL;
364 /* Get krb5Key from the db */
366 ldb_keys = ldb_msg_find_element(msg, "krb5Key");
369 /* oh, no password. Apparently (comment in
370 * hdb-ldap.c) this violates the ASN.1, but this
371 * allows an entry with no keys (yet). */
372 entry_ex->entry.keys.val = NULL;
373 entry_ex->entry.keys.len = 0;
375 /* allocate space to decode into */
376 entry_ex->entry.keys.val = calloc(ldb_keys->num_values, sizeof(Key));
377 if (entry_ex->entry.keys.val == NULL) {
382 entry_ex->entry.keys.len = 0;
384 /* Decode Kerberos keys into the hdb structure */
385 for (i=0; i < ldb_keys->num_values; i++) {
388 ret = decode_Key(ldb_keys->values[i].data, ldb_keys->values[i].length,
391 /* Could be bougus data in the entry, or out of memory */
395 if (userAccountControl & UF_USE_DES_KEY_ONLY) {
396 switch (key.key.keytype) {
398 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
399 entry_ex->entry.keys.len++;
401 /* We must use DES keys only */
405 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
406 entry_ex->entry.keys.len++;
411 entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
412 if (entry_ex->entry.etypes == NULL) {
413 krb5_clear_error_string(context);
417 entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
418 entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
419 if (entry_ex->entry.etypes->val == NULL) {
420 krb5_clear_error_string(context);
424 for (i=0; i < entry_ex->entry.etypes->len; i++) {
425 entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype;
429 private->msg = talloc_steal(private, msg);
430 private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
431 private->samdb = (struct ldb_context *)db->hdb_db;
433 entry_ex->check_client_access = hdb_ldb_check_client_access;
434 entry_ex->authz_data_tgs_req = hdb_ldb_authz_data_tgs_req;
435 entry_ex->authz_data_as_req = hdb_ldb_authz_data_as_req;
439 /* This doesn't free ent itself, that is for the eventual caller to do */
440 hdb_free_entry(context, entry_ex);
442 talloc_steal(db, entry_ex->ctx);
448 static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
450 krb5_const_principal principal,
451 enum hdb_ldb_ent_type ent_type,
452 const struct ldb_dn *realm_dn,
453 struct ldb_message ***pmsg)
458 const char * const *princ_attrs = krb5_attrs;
461 char *short_princ_talloc;
463 struct ldb_result *res = NULL;
465 ret = krb5_unparse_name_flags(context, principal, KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ);
468 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
469 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
473 short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
475 if (!short_princ_talloc) {
476 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
481 case HDB_LDB_ENT_TYPE_CLIENT:
484 case HDB_LDB_ENT_TYPE_ANY:
487 case HDB_LDB_ENT_TYPE_KRBTGT:
488 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
491 case HDB_LDB_ENT_TYPE_SERVER:
492 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
498 krb5_set_error_string(context, "talloc_asprintf: out of memory");
502 lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
504 if (lret != LDB_SUCCESS) {
505 DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
506 return HDB_ERR_NOENTRY;
507 } else if (res->count == 0 || res->count > 1) {
508 DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count));
510 return HDB_ERR_NOENTRY;
512 talloc_steal(mem_ctx, res->msgs);
518 static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
521 struct ldb_message ***pmsg)
524 char *cross_ref_filter;
525 struct ldb_result *cross_ref_res;
526 const struct ldb_dn *partitions_basedn = samdb_partitions_dn(ldb_ctx, mem_ctx);
528 cross_ref_filter = talloc_asprintf(mem_ctx,
529 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
531 if (!cross_ref_filter) {
532 krb5_set_error_string(context, "asprintf: out of memory");
536 ret = ldb_search(ldb_ctx, partitions_basedn, LDB_SCOPE_SUBTREE, cross_ref_filter, realm_ref_attrs, &cross_ref_res);
538 if (ret != LDB_SUCCESS) {
539 DEBUG(3, ("Failed to search for %s: %s\n", cross_ref_filter, ldb_errstring(ldb_ctx)));
540 talloc_free(cross_ref_res);
541 return HDB_ERR_NOENTRY;
542 } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) {
543 DEBUG(3, ("Failed find a single entry for %s: got %d\n", cross_ref_filter, cross_ref_res->count));
544 talloc_free(cross_ref_res);
545 return HDB_ERR_NOENTRY;
549 *pmsg = cross_ref_res->msgs;
550 talloc_steal(mem_ctx, cross_ref_res->msgs);
552 talloc_free(cross_ref_res);
558 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
560 if (db->hdb_master_key_set) {
561 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
562 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
563 return HDB_ERR_NOENTRY;
569 static krb5_error_code LDB_close(krb5_context context, HDB *db)
574 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
579 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
584 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
586 return HDB_ERR_DB_INUSE;
589 static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db,
591 krb5_const_principal principal,
593 hdb_entry_ex *entry_ex) {
595 char *principal_string;
597 struct ldb_message **msg = NULL;
598 struct ldb_message **realm_ref_msg = NULL;
600 ret = krb5_unparse_name(context, principal, &principal_string);
606 nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
607 mem_ctx, principal_string,
608 &msg, &realm_ref_msg);
609 free(principal_string);
610 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
611 return HDB_ERR_NOENTRY;
612 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
614 } else if (!NT_STATUS_IS_OK(nt_status)) {
618 ret = LDB_message2entry(context, db, mem_ctx,
619 principal, HDB_LDB_ENT_TYPE_CLIENT,
620 msg[0], realm_ref_msg[0], entry_ex);
624 static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
626 krb5_const_principal principal,
628 hdb_entry_ex *entry_ex)
631 struct ldb_message **msg = NULL;
632 struct ldb_message **realm_ref_msg = NULL;
633 const struct ldb_dn *realm_dn;
635 krb5_principal alloc_principal = NULL;
636 if (principal->name.name_string.len != 2
637 || (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) {
639 return HDB_ERR_NOENTRY;
642 /* krbtgt case. Either us or a trusted realm */
643 if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
644 mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
646 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
647 * is in our db, then direct the caller at our primary
650 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg[0], "dnsRoot", NULL);
651 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
653 krb5_set_error_string(context, "strupper_talloc: out of memory");
657 ret = krb5_copy_principal(context, principal, &alloc_principal);
662 free(alloc_principal->name.name_string.val[1]);
663 alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
664 talloc_free(realm_fixed);
665 if (!alloc_principal->name.name_string.val[1]) {
666 krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
669 principal = alloc_principal;
670 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
673 /* we should lookup trusted domains */
674 return HDB_ERR_NOENTRY;
677 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
679 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
681 principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
684 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
685 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
689 ret = LDB_message2entry(context, db, mem_ctx,
690 principal, HDB_LDB_ENT_TYPE_KRBTGT,
691 msg[0], realm_ref_msg[0], entry_ex);
693 krb5_warnx(context, "LDB_fetch: message2entry failed");
698 static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
700 krb5_const_principal principal,
702 hdb_entry_ex *entry_ex)
706 struct ldb_message **msg = NULL;
707 struct ldb_message **realm_ref_msg = NULL;
708 const struct ldb_dn *partitions_basedn = samdb_partitions_dn(db->hdb_db, mem_ctx);
709 if (principal->name.name_string.len >= 2) {
710 /* 'normal server' case */
713 struct ldb_dn *user_dn, *domain_dn;
714 char *principal_string;
716 ret = krb5_unparse_name_flags(context, principal,
717 KRB5_PRINCIPAL_UNPARSE_NO_REALM,
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, partitions_basedn, &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 lret = ldb_search(ldb_ctx, realm_dn,
932 LDB_SCOPE_SUBTREE, "(objectClass=user)",
935 if (lret != LDB_SUCCESS) {
937 return HDB_ERR_NOENTRY;
940 priv->count = res->count;
941 priv->msgs = talloc_steal(priv, res->msgs);
944 db->hdb_openp = priv;
946 ret = LDB_seq(context, db, flags, entry);
950 db->hdb_openp = NULL;
952 talloc_free(mem_ctx);
957 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
960 return LDB_seq(context, db, flags, entry);
963 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
969 /* This interface is to be called by the KDC, which is expecting Samba
970 * calling conventions. It is also called by a wrapper
971 * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
974 NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx,
975 krb5_context context, struct HDB **db, const char *arg)
978 struct auth_session_info *session_info;
979 *db = talloc(mem_ctx, HDB);
981 krb5_set_error_string(context, "malloc: out of memory");
982 return NT_STATUS_NO_MEMORY;
985 (*db)->hdb_master_key_set = 0;
986 (*db)->hdb_db = NULL;
988 nt_status = auth_system_session_info(*db, &session_info);
989 if (!NT_STATUS_IS_OK(nt_status)) {
993 /* The idea here is very simple. Using Kerberos to
994 * authenticate the KDC to the LDAP server is higly likely to
997 * In future we may set this up to use EXERNAL and SSL
998 * certificates, for now it will almost certainly be NTLMSSP
1001 cli_credentials_set_kerberos_state(session_info->credentials,
1002 CRED_DONT_USE_KERBEROS);
1004 /* Setup the link to LDB */
1005 (*db)->hdb_db = samdb_connect(*db, session_info);
1006 if ((*db)->hdb_db == NULL) {
1007 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1008 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1011 (*db)->hdb_openp = 0;
1012 (*db)->hdb_open = LDB_open;
1013 (*db)->hdb_close = LDB_close;
1014 (*db)->hdb_fetch = LDB_fetch;
1015 (*db)->hdb_store = LDB_store;
1016 (*db)->hdb_remove = LDB_remove;
1017 (*db)->hdb_firstkey = LDB_firstkey;
1018 (*db)->hdb_nextkey = LDB_nextkey;
1019 (*db)->hdb_lock = LDB_lock;
1020 (*db)->hdb_unlock = LDB_unlock;
1021 (*db)->hdb_rename = LDB_rename;
1022 /* we don't implement these, as we are not a lockable database */
1023 (*db)->hdb__get = NULL;
1024 (*db)->hdb__put = NULL;
1025 /* kadmin should not be used for deletes - use other tools instead */
1026 (*db)->hdb__del = NULL;
1027 (*db)->hdb_destroy = LDB_destroy;
1029 return NT_STATUS_OK;
1032 krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
1035 /* Disgusting, ugly hack, but it means one less private hook */
1036 nt_status = kdc_hdb_ldb_create(context->mem_ctx, context, db, arg);
1038 if (NT_STATUS_IS_OK(nt_status)) {