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"
46 { HDB_LDB_ENT_TYPE_CLIENT, HDB_LDB_ENT_TYPE_SERVER,
47 HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_ANY };
49 static const char * const krb5_attrs[] = {
54 "servicePrincipalName",
68 "msDS-KeyVersionNumber",
72 static const char *realm_ref_attrs[] = {
78 static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val)
84 gentime = ldb_msg_find_string(msg, attr, NULL);
88 tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm);
96 static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type)
98 HDBFlags flags = int2HDBFlags(0);
100 krb5_warnx(context, "uf2HDBFlags: userAccountControl: %08x\n", userAccountControl);
102 /* we don't allow kadmin deletes */
105 /* mark the principal as invalid to start with */
110 /* All accounts are servers, but this may be disabled again in the caller */
113 /* Account types - clear the invalid bit if it turns out to be valid */
114 if (userAccountControl & UF_NORMAL_ACCOUNT) {
115 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
121 if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
122 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
127 if (userAccountControl & UF_WORKSTATION_TRUST_ACCOUNT) {
128 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
133 if (userAccountControl & UF_SERVER_TRUST_ACCOUNT) {
134 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
140 /* Not permitted to act as a client if disabled */
141 if (userAccountControl & UF_ACCOUNTDISABLE) {
144 if (userAccountControl & UF_LOCKOUT) {
148 if (userAccountControl & UF_PASSWORD_NOTREQD) {
153 if (userAccountControl & UF_PASSWORD_CANT_CHANGE) {
158 if (userAccountControl & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED) {
162 if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) {
166 /* UF_DONT_EXPIRE_PASSWD handled in LDB_message2entry() */
169 if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
173 if (userAccountControl & UF_SMARTCARD_REQUIRED) {
174 flags.require_hwauth = 1;
176 if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) {
177 flags.ok_as_delegate = 1;
179 if (!(userAccountControl & UF_NOT_DELEGATED)) {
180 flags.forwardable = 1;
185 if (userAccountControl & UF_SMARTCARD_USE_DES_KEY_ONLY) {
189 if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) {
190 flags.require_preauth = 0;
192 flags.require_preauth = 1;
196 krb5_warnx(context, "uf2HDBFlags: HDBFlags: %08x\n", HDBFlags2int(flags));
201 static int hdb_ldb_destrutor(void *ptr)
203 struct hdb_ldb_private *private = ptr;
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 const char *unicodePwd;
225 unsigned int userAccountControl;
227 krb5_error_code ret = 0;
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;
235 memset(entry_ex, 0, sizeof(*entry_ex));
237 krb5_warnx(context, "LDB_message2entry:\n");
240 krb5_set_error_string(context, "talloc_strdup: out of memory");
245 private = talloc(mem_ctx, struct hdb_ldb_private);
251 private->entry_ex = entry_ex;
253 talloc_set_destructor(private, hdb_ldb_destrutor);
255 entry_ex->ctx = private;
256 entry_ex->free_entry = hdb_ldb_free_entry;
258 userAccountControl = ldb_msg_find_uint(msg, "userAccountControl", 0);
260 entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
261 if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
262 const char *samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
263 if (!samAccountName) {
264 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
268 samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
269 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
272 ret = copy_Principal(principal, entry_ex->entry.principal);
274 krb5_clear_error_string(context);
278 /* While we have copied the client principal, tests
279 * show that Win2k3 returns the 'corrected' realm, not
280 * the client-specified realm. This code attempts to
281 * replace the client principal's realm with the one
282 * we determine from our records */
285 free(*krb5_princ_realm(context, entry_ex->entry.principal));
287 /* this has to be with malloc() */
288 strdup_realm = strdup(realm);
291 krb5_clear_error_string(context);
294 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
297 entry_ex->entry.kvno = ldb_msg_find_int(msg, "msDS-KeyVersionNumber", 0);
299 entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
301 if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
302 entry_ex->entry.flags.invalid = 0;
303 entry_ex->entry.flags.server = 1;
304 entry_ex->entry.flags.forwardable = 1;
305 entry_ex->entry.flags.ok_as_delegate = 1;
308 if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
309 if (!ldb_msg_find_string(msg, "servicePrincipalName", NULL)) {
310 entry_ex->entry.flags.server = 0;
314 /* use 'whenCreated' */
315 entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
317 entry_ex->entry.created_by.principal = NULL;
319 entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
320 if (entry_ex->entry.modified_by == NULL) {
321 krb5_set_error_string(context, "malloc: out of memory");
326 /* use 'whenChanged' */
327 entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
329 entry_ex->entry.modified_by->principal = NULL;
331 entry_ex->entry.valid_start = NULL;
333 acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
334 if ((acct_expiry == (NTTIME)-1) ||
335 (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
336 entry_ex->entry.valid_end = NULL;
338 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
339 if (entry_ex->entry.valid_end == NULL) {
343 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
346 if ((ent_type != HDB_LDB_ENT_TYPE_KRBTGT) && (!(userAccountControl & UF_DONT_EXPIRE_PASSWD))) {
347 NTTIME must_change_time
348 = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
351 if (must_change_time != 0) {
352 entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
353 if (entry_ex->entry.pw_end == NULL) {
357 *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
359 entry_ex->entry.pw_end = NULL;
362 entry_ex->entry.pw_end = NULL;
365 entry_ex->entry.max_life = NULL;
367 entry_ex->entry.max_renew = NULL;
369 entry_ex->entry.generation = NULL;
371 /* create the keys and enctypes */
372 unicodePwd = ldb_msg_find_string(msg, "unicodePwd", NULL);
374 /* Many, many thanks to lukeh@padl.com for this
375 * algorithm, described in his Nov 10 2004 mail to
376 * samba-technical@samba.org */
378 Principal *salt_principal;
379 const char *user_principal_name = ldb_msg_find_string(msg, "userPrincipalName", NULL);
380 struct ldb_message_element *objectclasses;
381 struct ldb_val computer_val;
382 computer_val.data = discard_const_p(uint8_t,"computer");
383 computer_val.length = strlen((const char *)computer_val.data);
385 objectclasses = ldb_msg_find_element(msg, "objectClass");
387 if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
388 /* Determine a salting principal */
389 char *samAccountName = talloc_strdup(mem_ctx, ldb_msg_find_string(msg, "samAccountName", NULL));
391 if (!samAccountName) {
392 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
396 if (samAccountName[strlen(samAccountName)-1] == '$') {
397 samAccountName[strlen(samAccountName)-1] = '\0';
399 saltbody = talloc_asprintf(mem_ctx, "%s.%s", samAccountName, dnsdomain);
401 ret = krb5_make_principal(context, &salt_principal, realm, "host", saltbody, NULL);
402 } else if (user_principal_name) {
404 user_principal_name = talloc_strdup(mem_ctx, user_principal_name);
405 if (!user_principal_name) {
409 p = strchr(user_principal_name, '@');
413 ret = krb5_make_principal(context, &salt_principal, realm, user_principal_name, NULL);
416 const char *samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
417 ret = krb5_make_principal(context, &salt_principal, realm, samAccountName, NULL);
421 size_t num_keys = entry_ex->entry.keys.len;
423 * create keys from unicodePwd
425 ret = hdb_generate_key_set_password(context, salt_principal,
427 &entry_ex->entry.keys.val, &num_keys);
428 entry_ex->entry.keys.len = num_keys;
429 krb5_free_principal(context, salt_principal);
433 krb5_warnx(context, "could not generate keys from unicodePwd\n");
434 entry_ex->entry.keys.val = NULL;
435 entry_ex->entry.keys.len = 0;
439 const struct ldb_val *val;
442 val = ldb_msg_find_ldb_val(msg, "ntPwdHash");
444 krb5_warnx(context, "neither type of key available for this account\n");
445 entry_ex->entry.keys.val = NULL;
446 entry_ex->entry.keys.len = 0;
447 } else if (val->length < 16) {
448 entry_ex->entry.keys.val = NULL;
449 entry_ex->entry.keys.len = 0;
450 krb5_warnx(context, "ntPwdHash has invalid length: %d\n",
453 ret = krb5_data_alloc (&keyvalue, 16);
455 krb5_clear_error_string(context);
460 memcpy(keyvalue.data, val->data, 16);
462 entry_ex->entry.keys.val = malloc(sizeof(entry_ex->entry.keys.val[0]));
463 if (entry_ex->entry.keys.val == NULL) {
464 krb5_data_free(&keyvalue);
465 krb5_clear_error_string(context);
470 memset(&entry_ex->entry.keys.val[0], 0, sizeof(Key));
471 entry_ex->entry.keys.val[0].key.keytype = ETYPE_ARCFOUR_HMAC_MD5;
472 entry_ex->entry.keys.val[0].key.keyvalue = keyvalue;
474 entry_ex->entry.keys.len = 1;
479 entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
480 if (entry_ex->entry.etypes == NULL) {
481 krb5_clear_error_string(context);
485 entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
486 entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
487 if (entry_ex->entry.etypes->val == NULL) {
488 krb5_clear_error_string(context);
492 for (i=0; i < entry_ex->entry.etypes->len; i++) {
493 entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype;
497 private->msg = talloc_steal(private, msg);
498 private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
499 private->samdb = (struct ldb_context *)db->hdb_db;
501 entry_ex->check_client_access = hdb_ldb_check_client_access;
502 entry_ex->authz_data_tgs_req = hdb_ldb_authz_data_tgs_req;
503 entry_ex->authz_data_as_req = hdb_ldb_authz_data_as_req;
507 /* This doesn't free ent itself, that is for the eventual caller to do */
508 hdb_free_entry(context, entry_ex);
510 talloc_steal(db, entry_ex->ctx);
516 static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
518 krb5_const_principal principal,
519 enum hdb_ldb_ent_type ent_type,
520 const struct ldb_dn *realm_dn,
521 struct ldb_message ***pmsg)
526 const char * const *princ_attrs = krb5_attrs;
529 char *princ_str_talloc;
531 char *short_princ_talloc;
535 struct ldb_result *res = NULL;
537 ret = krb5_unparse_name(context, principal, &princ_str);
540 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
541 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
545 ret = krb5_unparse_name_norealm(context, principal, &short_princ);
549 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
550 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
554 princ_str_talloc = talloc_strdup(mem_ctx, princ_str);
555 short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
558 if (!short_princ || !princ_str_talloc) {
559 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
564 case HDB_LDB_ENT_TYPE_CLIENT:
568 case HDB_LDB_ENT_TYPE_KRBTGT:
569 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
572 case HDB_LDB_ENT_TYPE_SERVER:
573 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
576 case HDB_LDB_ENT_TYPE_ANY:
577 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(|(|(samAccountName=%s)(servicePrincipalName=%s))(userPrincipalName=%s)))",
578 short_princ_talloc, short_princ_talloc, princ_str_talloc);
583 krb5_set_error_string(context, "talloc_asprintf: out of memory");
587 lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
589 realm_dn_str = ldb_dn_linearize(mem_ctx, realm_dn);
591 if (lret != LDB_SUCCESS || res->count == 0) {
592 krb5_warnx(context, "ldb_search: basedn: '%s' filter: '%s' failed: %s",
593 realm_dn_str, filter, ldb_errstring(ldb_ctx));
594 krb5_set_error_string(context, "ldb_search: basedn: '%s' filter: '%s' failed: %s",
595 realm_dn_str, filter, ldb_errstring(ldb_ctx));
596 return HDB_ERR_NOENTRY;
597 } else if (res->count > 1) {
598 krb5_warnx(context, "ldb_search: basedn: '%s' filter: '%s' more than 1 entry: %d",
599 realm_dn_str, filter, res->count);
600 krb5_set_error_string(context, "ldb_search: basedn: '%s' filter: '%s' more than 1 entry: %d",
601 realm_dn_str, filter, res->count);
603 return HDB_ERR_NOENTRY;
605 talloc_steal(mem_ctx, res->msgs);
611 static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
614 struct ldb_message ***pmsg)
617 char *cross_ref_filter;
618 struct ldb_result *cross_ref_res;
620 cross_ref_filter = talloc_asprintf(mem_ctx,
621 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
623 if (!cross_ref_filter) {
624 krb5_set_error_string(context, "asprintf: out of memory");
628 ret = ldb_search(ldb_ctx, NULL, LDB_SCOPE_SUBTREE, cross_ref_filter, realm_ref_attrs, &cross_ref_res);
630 if (ret != LDB_SUCCESS || cross_ref_res->count == 0) {
631 krb5_warnx(context, "ldb_search: filter: '%s' failed: %s", cross_ref_filter, ldb_errstring(ldb_ctx));
632 krb5_set_error_string(context, "ldb_search: filter: '%s' failed: %s", cross_ref_filter, ldb_errstring(ldb_ctx));
634 talloc_free(cross_ref_res);
635 return HDB_ERR_NOENTRY;
636 } else if (cross_ref_res->count > 1) {
637 krb5_warnx(context, "ldb_search: filter: '%s' more than 1 entry: %d", cross_ref_filter, cross_ref_res->count);
638 krb5_set_error_string(context, "ldb_search: filter: '%s' more than 1 entry: %d", cross_ref_filter, cross_ref_res->count);
640 talloc_free(cross_ref_res);
641 return HDB_ERR_NOENTRY;
645 *pmsg = talloc_steal(mem_ctx, cross_ref_res->msgs);
647 talloc_free(cross_ref_res);
654 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
656 if (db->hdb_master_key_set) {
657 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
658 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
659 return HDB_ERR_NOENTRY;
665 static krb5_error_code LDB_close(krb5_context context, HDB *db)
670 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
675 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
680 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
682 return HDB_ERR_DB_INUSE;
685 static krb5_error_code LDB_fetch(krb5_context context, HDB *db, unsigned flags,
686 krb5_const_principal principal,
687 enum hdb_ent_type ent_type,
688 hdb_entry_ex *entry_ex)
690 struct ldb_message **msg = NULL;
691 struct ldb_message **realm_ref_msg = NULL;
692 struct ldb_message **realm_fixed_msg = NULL;
693 enum hdb_ldb_ent_type ldb_ent_type;
697 const struct ldb_dn *realm_dn;
698 TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
701 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
706 case HDB_ENT_TYPE_CLIENT:
709 char *principal_string;
710 ldb_ent_type = HDB_LDB_ENT_TYPE_CLIENT;
712 ret = krb5_unparse_name(context, principal, &principal_string);
715 talloc_free(mem_ctx);
719 nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
720 mem_ctx, principal_string,
721 &msg, &realm_ref_msg);
722 free(principal_string);
723 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
724 talloc_free(mem_ctx);
725 return HDB_ERR_NOENTRY;
726 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
727 talloc_free(mem_ctx);
729 } else if (!NT_STATUS_IS_OK(nt_status)) {
730 talloc_free(mem_ctx);
734 ret = LDB_message2entry(context, db, mem_ctx,
735 principal, ldb_ent_type,
736 msg[0], realm_ref_msg[0], entry_ex);
738 talloc_free(mem_ctx);
741 case HDB_ENT_TYPE_SERVER:
742 if (principal->name.name_string.len == 2
743 && (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) == 0)) {
744 /* krbtgt case. Either us or a trusted realm */
745 if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
746 mem_ctx, principal->name.name_string.val[1], &realm_fixed_msg) == 0)) {
748 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
749 * is in our db, then direct the caller at our primary
752 const char *dnsdomain = ldb_msg_find_string(realm_fixed_msg[0], "dnsRoot", NULL);
753 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
755 krb5_set_error_string(context, "strupper_talloc: out of memory");
756 talloc_free(mem_ctx);
760 free(principal->name.name_string.val[1]);
761 principal->name.name_string.val[1] = strdup(realm_fixed);
762 talloc_free(realm_fixed);
763 if (!principal->name.name_string.val[1]) {
764 krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
765 talloc_free(mem_ctx);
768 ldb_ent_type = HDB_LDB_ENT_TYPE_KRBTGT;
771 /* we should lookup trusted domains */
772 talloc_free(mem_ctx);
773 return HDB_ERR_NOENTRY;
776 } else if (principal->name.name_string.len >= 2) {
777 /* 'normal server' case */
780 struct ldb_dn *user_dn, *domain_dn;
781 char *principal_string;
782 ldb_ent_type = HDB_LDB_ENT_TYPE_SERVER;
784 ret = krb5_unparse_name_norealm(context, principal, &principal_string);
787 talloc_free(mem_ctx);
791 /* At this point we may find the host is known to be
792 * in a different realm, so we should generate a
793 * referral instead */
794 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
795 mem_ctx, principal_string,
796 &user_dn, &domain_dn);
797 free(principal_string);
799 if (!NT_STATUS_IS_OK(nt_status)) {
800 talloc_free(mem_ctx);
801 return HDB_ERR_NOENTRY;
804 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
805 mem_ctx, user_dn, &msg, krb5_attrs);
808 talloc_free(mem_ctx);
809 return HDB_ERR_NOENTRY;
812 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
813 mem_ctx, NULL, &realm_ref_msg, realm_ref_attrs,
814 "ncName=%s", ldb_dn_linearize(mem_ctx, domain_dn));
817 talloc_free(mem_ctx);
818 return HDB_ERR_NOENTRY;
821 ret = LDB_message2entry(context, db, mem_ctx,
822 principal, ldb_ent_type,
823 msg[0], realm_ref_msg[0], entry_ex);
824 talloc_free(mem_ctx);
828 ldb_ent_type = HDB_LDB_ENT_TYPE_SERVER;
829 /* server as client principal case, but we must not lookup userPrincipalNames */
832 case HDB_ENT_TYPE_ANY:
833 ldb_ent_type = HDB_LDB_ENT_TYPE_ANY;
836 krb5_warnx(context, "LDB_fetch: invalid ent_type specified!");
837 talloc_free(mem_ctx);
838 return HDB_ERR_NOENTRY;
842 realm = krb5_principal_get_realm(context, principal);
844 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
845 mem_ctx, realm, &realm_ref_msg);
847 krb5_warnx(context, "LDB_fetch: could not find realm");
848 talloc_free(mem_ctx);
849 return HDB_ERR_NOENTRY;
852 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msg[0], "nCName", NULL);
854 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
856 principal, ldb_ent_type, realm_dn, &msg);
859 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
860 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
861 talloc_free(mem_ctx);
864 ret = LDB_message2entry(context, db, mem_ctx,
865 principal, ldb_ent_type,
866 msg[0], realm_ref_msg[0], entry_ex);
868 krb5_warnx(context, "LDB_fetch: message2entry failed\n");
872 talloc_free(mem_ctx);
876 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
878 return HDB_ERR_DB_INUSE;
881 static krb5_error_code LDB_remove(krb5_context context, HDB *db, hdb_entry_ex *entry)
883 return HDB_ERR_DB_INUSE;
887 struct ldb_context *ctx;
890 struct ldb_message **msgs;
891 struct ldb_message **realm_ref_msgs;
894 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
897 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
899 hdb_entry_ex entry_ex;
900 memset(&entry_ex, '\0', sizeof(entry_ex));
903 return HDB_ERR_NOENTRY;
906 mem_ctx = talloc_named(priv, 0, "LDB_seq context");
909 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
913 if (priv->index < priv->count) {
914 ret = LDB_message2entry(context, db, mem_ctx,
915 NULL, HDB_LDB_ENT_TYPE_ANY,
916 priv->msgs[priv->index++],
917 priv->realm_ref_msgs[0], entry);
919 ret = HDB_ERR_NOENTRY;
924 db->hdb_openp = NULL;
926 talloc_free(mem_ctx);
932 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
935 struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
936 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
938 struct ldb_dn *realm_dn = NULL;
939 struct ldb_result *res = NULL;
940 struct ldb_message **realm_ref_msgs = NULL;
950 priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
952 krb5_set_error_string(context, "talloc: out of memory");
959 priv->realm_ref_msgs = NULL;
962 mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
965 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
969 ret = krb5_get_default_realm(context, &realm);
975 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
976 mem_ctx, realm, &realm_ref_msgs);
982 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
983 return HDB_ERR_NOENTRY;
986 realm_dn = samdb_result_dn(mem_ctx, realm_ref_msgs[0], "nCName", NULL);
988 priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
990 krb5_warnx(context, "LDB_firstkey: realm ok\n");
992 lret = ldb_search(ldb_ctx, realm_dn,
993 LDB_SCOPE_SUBTREE, "(objectClass=user)",
996 if (lret != LDB_SUCCESS) {
998 return HDB_ERR_NOENTRY;
1001 priv->count = res->count;
1002 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 NTSTATUS hdb_ldb_create(TALLOC_CTX *mem_ctx,
1030 krb5_context context, struct HDB **db, const char *arg)
1033 struct auth_session_info *session_info;
1034 *db = talloc(mem_ctx, HDB);
1036 krb5_set_error_string(context, "malloc: out of memory");
1037 return NT_STATUS_NO_MEMORY;
1040 (*db)->hdb_master_key_set = 0;
1041 (*db)->hdb_db = NULL;
1043 nt_status = auth_system_session_info(*db, &session_info);
1044 if (!NT_STATUS_IS_OK(nt_status)) {
1048 /* The idea here is very simple. Using Kerberos to
1049 * authenticate the KDC to the LDAP server is higly likely to
1052 * In future we may set this up to use EXERNAL and SSL
1053 * certificates, for now it will almost certainly be NTLMSSP
1056 nt_status = cli_credentials_gensec_remove_oid(session_info->credentials,
1057 GENSEC_OID_KERBEROS5);
1058 if (!NT_STATUS_IS_OK(nt_status)) {
1062 /* Setup the link to LDB */
1063 (*db)->hdb_db = samdb_connect(*db, session_info);
1064 if ((*db)->hdb_db == NULL) {
1065 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1066 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1069 (*db)->hdb_openp = 0;
1070 (*db)->hdb_open = LDB_open;
1071 (*db)->hdb_close = LDB_close;
1072 (*db)->hdb_fetch = LDB_fetch;
1073 (*db)->hdb_store = LDB_store;
1074 (*db)->hdb_remove = LDB_remove;
1075 (*db)->hdb_firstkey = LDB_firstkey;
1076 (*db)->hdb_nextkey = LDB_nextkey;
1077 (*db)->hdb_lock = LDB_lock;
1078 (*db)->hdb_unlock = LDB_unlock;
1079 (*db)->hdb_rename = LDB_rename;
1080 /* we don't implement these, as we are not a lockable database */
1081 (*db)->hdb__get = NULL;
1082 (*db)->hdb__put = NULL;
1083 /* kadmin should not be used for deletes - use other tools instead */
1084 (*db)->hdb__del = NULL;
1085 (*db)->hdb_destroy = LDB_destroy;
1087 return NT_STATUS_OK;