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
39 #include "lib/ldb/include/ldb.h"
40 #include "lib/ldb/include/ldb_errors.h"
41 #include "system/iconv.h"
42 #include "librpc/gen_ndr/netlogon.h"
43 #include "auth/auth.h"
44 #include "dsdb/samdb/samdb.h"
47 { HDB_LDB_ENT_TYPE_CLIENT, HDB_LDB_ENT_TYPE_SERVER,
48 HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_ANY };
50 static const char * const krb5_attrs[] = {
55 "servicePrincipalName",
67 "msDS-KeyVersionNumber",
71 static const char *realm_ref_attrs[] = {
77 static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val)
83 gentime = ldb_msg_find_string(msg, attr, NULL);
87 tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm);
95 static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type)
97 HDBFlags flags = int2HDBFlags(0);
99 krb5_warnx(context, "uf2HDBFlags: userAccountControl: %08x\n", userAccountControl);
101 /* we don't allow kadmin deletes */
104 /* mark the principal as invalid to start with */
109 /* All accounts are servers, but this may be disabled again in the caller */
112 /* Account types - clear the invalid bit if it turns out to be valid */
113 if (userAccountControl & UF_NORMAL_ACCOUNT) {
114 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
120 if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
121 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
126 if (userAccountControl & UF_WORKSTATION_TRUST_ACCOUNT) {
127 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
132 if (userAccountControl & UF_SERVER_TRUST_ACCOUNT) {
133 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
139 /* Not permitted to act as a client if disabled */
140 if (userAccountControl & UF_ACCOUNTDISABLE) {
143 if (userAccountControl & UF_LOCKOUT) {
147 if (userAccountControl & UF_PASSWORD_NOTREQD) {
152 if (userAccountControl & UF_PASSWORD_CANT_CHANGE) {
157 if (userAccountControl & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED) {
161 if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) {
165 /* UF_DONT_EXPIRE_PASSWD handled in LDB_message2entry() */
168 if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
172 if (userAccountControl & UF_SMARTCARD_REQUIRED) {
173 flags.require_hwauth = 1;
175 if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) {
176 flags.ok_as_delegate = 1;
178 if (!(userAccountControl & UF_NOT_DELEGATED)) {
179 flags.forwardable = 1;
184 if (userAccountControl & UF_SMARTCARD_USE_DES_KEY_ONLY) {
188 if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) {
189 flags.require_preauth = 0;
191 flags.require_preauth = 1;
195 krb5_warnx(context, "uf2HDBFlags: HDBFlags: %08x\n", HDBFlags2int(flags));
200 static int hdb_ldb_destrutor(void *ptr)
202 struct hdb_ldb_private *private = ptr;
203 hdb_entry_ex *entry_ex = private->entry_ex;
204 free_hdb_entry(&entry_ex->entry);
208 static void hdb_ldb_free_entry(krb5_context context, hdb_entry_ex *entry_ex)
210 talloc_free(entry_ex->ctx);
214 * Construct an hdb_entry from a directory entry.
216 static krb5_error_code LDB_message2entry(krb5_context context, HDB *db,
217 TALLOC_CTX *mem_ctx, krb5_const_principal principal,
218 enum hdb_ldb_ent_type ent_type,
219 struct ldb_message *msg,
220 struct ldb_message *realm_ref_msg,
221 hdb_entry_ex *entry_ex)
223 unsigned int userAccountControl;
225 krb5_error_code ret = 0;
226 krb5_boolean is_computer = FALSE;
227 const char *dnsdomain = ldb_msg_find_string(realm_ref_msg, "dnsRoot", NULL);
228 char *realm = strupper_talloc(mem_ctx, dnsdomain);
229 struct ldb_dn *domain_dn = samdb_result_dn(mem_ctx, realm_ref_msg, "nCName", ldb_dn_new(mem_ctx));
231 struct hdb_ldb_private *private;
233 struct ldb_message_element *ldb_keys;
235 struct ldb_message_element *objectclasses;
236 struct ldb_val computer_val;
237 computer_val.data = discard_const_p(uint8_t,"computer");
238 computer_val.length = strlen((const char *)computer_val.data);
240 objectclasses = ldb_msg_find_element(msg, "objectClass");
242 if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
246 memset(entry_ex, 0, sizeof(*entry_ex));
248 krb5_warnx(context, "LDB_message2entry:\n");
251 krb5_set_error_string(context, "talloc_strdup: out of memory");
256 private = talloc(mem_ctx, struct hdb_ldb_private);
262 private->entry_ex = entry_ex;
264 talloc_set_destructor(private, hdb_ldb_destrutor);
266 entry_ex->ctx = private;
267 entry_ex->free_entry = hdb_ldb_free_entry;
269 userAccountControl = ldb_msg_find_uint(msg, "userAccountControl", 0);
272 entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
273 if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
274 const char *samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
275 if (!samAccountName) {
276 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
280 samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
281 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
284 ret = copy_Principal(principal, entry_ex->entry.principal);
286 krb5_clear_error_string(context);
290 /* While we have copied the client principal, tests
291 * show that Win2k3 returns the 'corrected' realm, not
292 * the client-specified realm. This code attempts to
293 * replace the client principal's realm with the one
294 * we determine from our records */
297 free(*krb5_princ_realm(context, entry_ex->entry.principal));
299 /* this has to be with malloc() */
300 strdup_realm = strdup(realm);
303 krb5_clear_error_string(context);
306 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
309 entry_ex->entry.kvno = ldb_msg_find_int(msg, "msDS-KeyVersionNumber", 0);
311 entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
313 if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
314 entry_ex->entry.flags.invalid = 0;
315 entry_ex->entry.flags.server = 1;
316 entry_ex->entry.flags.forwardable = 1;
317 entry_ex->entry.flags.ok_as_delegate = 1;
320 if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
321 if (!is_computer && !ldb_msg_find_string(msg, "servicePrincipalName", NULL)) {
322 entry_ex->entry.flags.server = 0;
326 /* use 'whenCreated' */
327 entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
329 entry_ex->entry.created_by.principal = NULL;
331 entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
332 if (entry_ex->entry.modified_by == NULL) {
333 krb5_set_error_string(context, "malloc: out of memory");
338 /* use 'whenChanged' */
339 entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
341 entry_ex->entry.modified_by->principal = NULL;
343 entry_ex->entry.valid_start = NULL;
345 acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
346 if ((acct_expiry == (NTTIME)-1) ||
347 (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
348 entry_ex->entry.valid_end = NULL;
350 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
351 if (entry_ex->entry.valid_end == NULL) {
355 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
358 if (!(userAccountControl & UF_DONT_EXPIRE_PASSWD) &&
359 (ent_type != HDB_LDB_ENT_TYPE_KRBTGT)) {
360 NTTIME must_change_time
361 = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
364 if (must_change_time != 0) {
365 entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
366 if (entry_ex->entry.pw_end == NULL) {
370 *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
372 entry_ex->entry.pw_end = NULL;
375 entry_ex->entry.pw_end = NULL;
378 entry_ex->entry.max_life = NULL;
380 entry_ex->entry.max_renew = NULL;
382 entry_ex->entry.generation = NULL;
384 /* Get krb5Key from the db */
386 ldb_keys = ldb_msg_find_element(msg, "krb5Key");
389 /* oh, no password. Apparently (comment in
390 * hdb-ldap.c) this violates the ASN.1, but this
391 * allows an entry with no keys (yet). */
392 entry_ex->entry.keys.val = NULL;
393 entry_ex->entry.keys.len = 0;
395 /* allocate space to decode into */
396 entry_ex->entry.keys.val = calloc(ldb_keys->num_values, sizeof(Key));
397 if (entry_ex->entry.keys.val == NULL) {
401 entry_ex->entry.keys.len = ldb_keys->num_values;
403 /* Decode Kerberos keys into the hdb structure */
404 for (i=0; i < entry_ex->entry.keys.len; i++) {
406 ret = decode_Key(ldb_keys->values[i].data, ldb_keys->values[i].length,
407 &entry_ex->entry.keys.val[i], &decode_len);
409 /* Could be bougus data in the entry, or out of memory */
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 const struct ldb_dn *realm_dn,
457 struct ldb_message ***pmsg)
462 const char * const *princ_attrs = krb5_attrs;
465 char *short_princ_talloc;
469 struct ldb_result *res = NULL;
471 ret = krb5_unparse_name_norealm(context, principal, &short_princ);
474 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
475 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
479 short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
481 if (!short_princ || !short_princ_talloc) {
482 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
487 case HDB_LDB_ENT_TYPE_CLIENT:
490 case HDB_LDB_ENT_TYPE_ANY:
493 case HDB_LDB_ENT_TYPE_KRBTGT:
494 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
497 case HDB_LDB_ENT_TYPE_SERVER:
498 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
504 krb5_set_error_string(context, "talloc_asprintf: out of memory");
508 lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
510 realm_dn_str = ldb_dn_linearize(mem_ctx, realm_dn);
512 if (lret != LDB_SUCCESS || res->count == 0) {
513 krb5_warnx(context, "ldb_search: basedn: '%s' filter: '%s' failed: %s",
514 realm_dn_str, filter, ldb_errstring(ldb_ctx));
515 krb5_set_error_string(context, "ldb_search: basedn: '%s' filter: '%s' failed: %s",
516 realm_dn_str, filter, ldb_errstring(ldb_ctx));
517 return HDB_ERR_NOENTRY;
518 } else if (res->count > 1) {
519 krb5_warnx(context, "ldb_search: basedn: '%s' filter: '%s' more than 1 entry: %d",
520 realm_dn_str, filter, res->count);
521 krb5_set_error_string(context, "ldb_search: basedn: '%s' filter: '%s' more than 1 entry: %d",
522 realm_dn_str, filter, res->count);
524 return HDB_ERR_NOENTRY;
526 talloc_steal(mem_ctx, res->msgs);
532 static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
535 struct ldb_message ***pmsg)
538 char *cross_ref_filter;
539 struct ldb_result *cross_ref_res;
541 cross_ref_filter = talloc_asprintf(mem_ctx,
542 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
544 if (!cross_ref_filter) {
545 krb5_set_error_string(context, "asprintf: out of memory");
549 ret = ldb_search(ldb_ctx, NULL, LDB_SCOPE_SUBTREE, cross_ref_filter, realm_ref_attrs, &cross_ref_res);
551 if (ret != LDB_SUCCESS || cross_ref_res->count == 0) {
552 krb5_warnx(context, "ldb_search: filter: '%s' failed: %s", cross_ref_filter, ldb_errstring(ldb_ctx));
553 krb5_set_error_string(context, "ldb_search: filter: '%s' failed: %s", cross_ref_filter, ldb_errstring(ldb_ctx));
555 talloc_free(cross_ref_res);
556 return HDB_ERR_NOENTRY;
557 } else if (cross_ref_res->count > 1) {
558 krb5_warnx(context, "ldb_search: filter: '%s' more than 1 entry: %d", cross_ref_filter, cross_ref_res->count);
559 krb5_set_error_string(context, "ldb_search: filter: '%s' more than 1 entry: %d", cross_ref_filter, cross_ref_res->count);
561 talloc_free(cross_ref_res);
562 return HDB_ERR_NOENTRY;
566 *pmsg = talloc_steal(mem_ctx, cross_ref_res->msgs);
568 talloc_free(cross_ref_res);
575 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
577 if (db->hdb_master_key_set) {
578 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
579 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
580 return HDB_ERR_NOENTRY;
586 static krb5_error_code LDB_close(krb5_context context, HDB *db)
591 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
596 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
601 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
603 return HDB_ERR_DB_INUSE;
606 static krb5_error_code LDB_fetch(krb5_context context, HDB *db, unsigned flags,
607 krb5_const_principal principal,
608 enum hdb_ent_type ent_type,
609 hdb_entry_ex *entry_ex)
611 struct ldb_message **msg = NULL;
612 struct ldb_message **realm_ref_msg = NULL;
613 struct ldb_message **realm_fixed_msg = NULL;
614 enum hdb_ldb_ent_type ldb_ent_type;
618 const struct ldb_dn *realm_dn;
619 TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
622 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
627 case HDB_ENT_TYPE_CLIENT:
630 char *principal_string;
631 ldb_ent_type = HDB_LDB_ENT_TYPE_CLIENT;
633 ret = krb5_unparse_name(context, principal, &principal_string);
636 talloc_free(mem_ctx);
640 nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
641 mem_ctx, principal_string,
642 &msg, &realm_ref_msg);
643 free(principal_string);
644 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
645 talloc_free(mem_ctx);
646 return HDB_ERR_NOENTRY;
647 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
648 talloc_free(mem_ctx);
650 } else if (!NT_STATUS_IS_OK(nt_status)) {
651 talloc_free(mem_ctx);
655 ret = LDB_message2entry(context, db, mem_ctx,
656 principal, ldb_ent_type,
657 msg[0], realm_ref_msg[0], entry_ex);
659 talloc_free(mem_ctx);
662 case HDB_ENT_TYPE_SERVER:
663 if (principal->name.name_string.len == 2
664 && (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) == 0)) {
665 /* krbtgt case. Either us or a trusted realm */
666 if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
667 mem_ctx, principal->name.name_string.val[1], &realm_fixed_msg) == 0)) {
669 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
670 * is in our db, then direct the caller at our primary
673 const char *dnsdomain = ldb_msg_find_string(realm_fixed_msg[0], "dnsRoot", NULL);
674 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
676 krb5_set_error_string(context, "strupper_talloc: out of memory");
677 talloc_free(mem_ctx);
681 free(principal->name.name_string.val[1]);
682 principal->name.name_string.val[1] = strdup(realm_fixed);
683 talloc_free(realm_fixed);
684 if (!principal->name.name_string.val[1]) {
685 krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
686 talloc_free(mem_ctx);
689 ldb_ent_type = HDB_LDB_ENT_TYPE_KRBTGT;
692 /* we should lookup trusted domains */
693 talloc_free(mem_ctx);
694 return HDB_ERR_NOENTRY;
697 } else if (principal->name.name_string.len >= 2) {
698 /* 'normal server' case */
701 struct ldb_dn *user_dn, *domain_dn;
702 char *principal_string;
703 ldb_ent_type = HDB_LDB_ENT_TYPE_SERVER;
705 ret = krb5_unparse_name_norealm(context, principal, &principal_string);
708 talloc_free(mem_ctx);
712 /* At this point we may find the host is known to be
713 * in a different realm, so we should generate a
714 * referral instead */
715 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
716 mem_ctx, principal_string,
717 &user_dn, &domain_dn);
718 free(principal_string);
720 if (!NT_STATUS_IS_OK(nt_status)) {
721 talloc_free(mem_ctx);
722 return HDB_ERR_NOENTRY;
725 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
726 mem_ctx, user_dn, &msg, krb5_attrs);
729 talloc_free(mem_ctx);
730 return HDB_ERR_NOENTRY;
733 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
734 mem_ctx, NULL, &realm_ref_msg, realm_ref_attrs,
735 "ncName=%s", ldb_dn_linearize(mem_ctx, domain_dn));
738 talloc_free(mem_ctx);
739 return HDB_ERR_NOENTRY;
742 ret = LDB_message2entry(context, db, mem_ctx,
743 principal, ldb_ent_type,
744 msg[0], realm_ref_msg[0], entry_ex);
745 talloc_free(mem_ctx);
749 ldb_ent_type = HDB_LDB_ENT_TYPE_SERVER;
750 /* server as client principal case, but we must not lookup userPrincipalNames */
753 case HDB_ENT_TYPE_ANY:
754 krb5_warnx(context, "LDB_fetch: ENT_TYPE_ANY is not valid in hdb-ldb!");
755 talloc_free(mem_ctx);
756 return HDB_ERR_NOENTRY;
758 krb5_warnx(context, "LDB_fetch: invalid ent_type specified!");
759 talloc_free(mem_ctx);
760 return HDB_ERR_NOENTRY;
764 realm = krb5_principal_get_realm(context, principal);
766 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
767 mem_ctx, realm, &realm_ref_msg);
769 krb5_warnx(context, "LDB_fetch: could not find realm");
770 talloc_free(mem_ctx);
771 return HDB_ERR_NOENTRY;
774 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
776 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
778 principal, ldb_ent_type, realm_dn, &msg);
781 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
782 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
783 talloc_free(mem_ctx);
786 ret = LDB_message2entry(context, db, mem_ctx,
787 principal, ldb_ent_type,
788 msg[0], realm_ref_msg[0], entry_ex);
790 krb5_warnx(context, "LDB_fetch: message2entry failed\n");
794 talloc_free(mem_ctx);
798 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
800 return HDB_ERR_DB_INUSE;
803 static krb5_error_code LDB_remove(krb5_context context, HDB *db, hdb_entry_ex *entry)
805 return HDB_ERR_DB_INUSE;
809 struct ldb_context *ctx;
812 struct ldb_message **msgs;
813 struct ldb_message **realm_ref_msgs;
816 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
819 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
821 hdb_entry_ex entry_ex;
822 memset(&entry_ex, '\0', sizeof(entry_ex));
825 return HDB_ERR_NOENTRY;
828 mem_ctx = talloc_named(priv, 0, "LDB_seq context");
831 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
835 if (priv->index < priv->count) {
836 ret = LDB_message2entry(context, db, mem_ctx,
837 NULL, HDB_LDB_ENT_TYPE_ANY,
838 priv->msgs[priv->index++],
839 priv->realm_ref_msgs[0], entry);
841 ret = HDB_ERR_NOENTRY;
846 db->hdb_openp = NULL;
848 talloc_free(mem_ctx);
854 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
857 struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
858 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
860 struct ldb_dn *realm_dn = NULL;
861 struct ldb_result *res = NULL;
862 struct ldb_message **realm_ref_msgs = NULL;
872 priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
874 krb5_set_error_string(context, "talloc: out of memory");
881 priv->realm_ref_msgs = NULL;
884 mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
887 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
891 ret = krb5_get_default_realm(context, &realm);
897 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
898 mem_ctx, realm, &realm_ref_msgs);
904 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
905 return HDB_ERR_NOENTRY;
908 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msgs[0], "nCName", NULL);
910 priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
912 krb5_warnx(context, "LDB_firstkey: realm ok\n");
914 lret = ldb_search(ldb_ctx, realm_dn,
915 LDB_SCOPE_SUBTREE, "(objectClass=user)",
918 if (lret != LDB_SUCCESS) {
920 return HDB_ERR_NOENTRY;
923 priv->count = res->count;
924 priv->msgs = talloc_steal(priv, res->msgs);
926 db->hdb_openp = priv;
928 ret = LDB_seq(context, db, flags, entry);
932 db->hdb_openp = NULL;
934 talloc_free(mem_ctx);
939 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
942 return LDB_seq(context, db, flags, entry);
945 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
951 NTSTATUS hdb_ldb_create(TALLOC_CTX *mem_ctx,
952 krb5_context context, struct HDB **db, const char *arg)
955 struct auth_session_info *session_info;
956 *db = talloc(mem_ctx, HDB);
958 krb5_set_error_string(context, "malloc: out of memory");
959 return NT_STATUS_NO_MEMORY;
962 (*db)->hdb_master_key_set = 0;
963 (*db)->hdb_db = NULL;
965 nt_status = auth_system_session_info(*db, &session_info);
966 if (!NT_STATUS_IS_OK(nt_status)) {
970 /* The idea here is very simple. Using Kerberos to
971 * authenticate the KDC to the LDAP server is higly likely to
974 * In future we may set this up to use EXERNAL and SSL
975 * certificates, for now it will almost certainly be NTLMSSP
978 nt_status = cli_credentials_gensec_remove_oid(session_info->credentials,
979 GENSEC_OID_KERBEROS5);
980 if (!NT_STATUS_IS_OK(nt_status)) {
984 /* Setup the link to LDB */
985 (*db)->hdb_db = samdb_connect(*db, session_info);
986 if ((*db)->hdb_db == NULL) {
987 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
988 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
991 (*db)->hdb_openp = 0;
992 (*db)->hdb_open = LDB_open;
993 (*db)->hdb_close = LDB_close;
994 (*db)->hdb_fetch = LDB_fetch;
995 (*db)->hdb_store = LDB_store;
996 (*db)->hdb_remove = LDB_remove;
997 (*db)->hdb_firstkey = LDB_firstkey;
998 (*db)->hdb_nextkey = LDB_nextkey;
999 (*db)->hdb_lock = LDB_lock;
1000 (*db)->hdb_unlock = LDB_unlock;
1001 (*db)->hdb_rename = LDB_rename;
1002 /* we don't implement these, as we are not a lockable database */
1003 (*db)->hdb__get = NULL;
1004 (*db)->hdb__put = NULL;
1005 /* kadmin should not be used for deletes - use other tools instead */
1006 (*db)->hdb__del = NULL;
1007 (*db)->hdb_destroy = LDB_destroy;
1009 return NT_STATUS_OK;