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"
49 #include "librpc/ndr/libndr.h"
50 #include "librpc/gen_ndr/ndr_drsblobs.h"
51 #include "libcli/auth/libcli_auth.h"
52 #include "param/param.h"
55 { HDB_LDB_ENT_TYPE_CLIENT, HDB_LDB_ENT_TYPE_SERVER,
56 HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_ANY };
58 static const char *realm_ref_attrs[] = {
64 static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val)
70 gentime = ldb_msg_find_attr_as_string(msg, attr, NULL);
74 tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm);
82 static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type)
84 HDBFlags flags = int2HDBFlags(0);
86 /* we don't allow kadmin deletes */
89 /* mark the principal as invalid to start with */
94 /* All accounts are servers, but this may be disabled again in the caller */
97 /* Account types - clear the invalid bit if it turns out to be valid */
98 if (userAccountControl & UF_NORMAL_ACCOUNT) {
99 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
105 if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
106 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
111 if (userAccountControl & UF_WORKSTATION_TRUST_ACCOUNT) {
112 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
117 if (userAccountControl & UF_SERVER_TRUST_ACCOUNT) {
118 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
124 /* Not permitted to act as a client if disabled */
125 if (userAccountControl & UF_ACCOUNTDISABLE) {
128 if (userAccountControl & UF_LOCKOUT) {
132 if (userAccountControl & UF_PASSWORD_NOTREQD) {
137 UF_PASSWORD_CANT_CHANGE and UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED are irrelevent
139 if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) {
143 /* UF_DONT_EXPIRE_PASSWD and UF_USE_DES_KEY_ONLY handled in LDB_message2entry() */
146 if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
150 if (userAccountControl & UF_SMARTCARD_REQUIRED) {
151 flags.require_hwauth = 1;
153 if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) {
154 flags.ok_as_delegate = 1;
156 if (!(userAccountControl & UF_NOT_DELEGATED)) {
157 flags.forwardable = 1;
161 if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) {
162 flags.require_preauth = 0;
164 flags.require_preauth = 1;
170 static int hdb_ldb_destrutor(struct hdb_ldb_private *private)
172 hdb_entry_ex *entry_ex = private->entry_ex;
173 free_hdb_entry(&entry_ex->entry);
177 static void hdb_ldb_free_entry(krb5_context context, hdb_entry_ex *entry_ex)
179 talloc_free(entry_ex->ctx);
182 static krb5_error_code LDB_message2entry_keys(krb5_context context,
184 struct ldb_message *msg,
185 unsigned int userAccountControl,
186 hdb_entry_ex *entry_ex)
188 krb5_error_code ret = 0;
190 struct samr_Password *hash;
191 const struct ldb_val *sc_val;
192 struct supplementalCredentialsBlob scb;
193 struct supplementalCredentialsPackage *scp = NULL;
194 struct package_PrimaryKerberosBlob _pkb;
195 struct package_PrimaryKerberosCtr3 *pkb3 = NULL;
197 uint32_t allocated_keys = 0;
199 entry_ex->entry.keys.val = NULL;
200 entry_ex->entry.keys.len = 0;
202 entry_ex->entry.kvno = ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0);
204 /* Get keys from the db */
206 hash = samdb_result_hash(mem_ctx, msg, "unicodePwd");
207 sc_val = ldb_msg_find_ldb_val(msg, "supplementalCredentials");
209 /* unicodePwd for enctype 0x17 (23) if present */
214 /* supplementalCredentials if present */
216 status = ndr_pull_struct_blob_all(sc_val, mem_ctx, &scb,
217 (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob);
218 if (!NT_STATUS_IS_OK(status)) {
219 dump_data(0, sc_val->data, sc_val->length);
224 for (i=0; i < scb.sub.num_packages; i++) {
225 if (scb.sub.packages[i].unknown1 != 0x00000001) {
229 if (strcmp("Primary:Kerberos", scb.sub.packages[i].name) != 0) {
233 if (!scb.sub.packages[i].data || !scb.sub.packages[i].data[0]) {
237 scp = &scb.sub.packages[i];
241 /* Primary:Kerberos element of supplementalCredentials */
245 blob = strhex_to_data_blob(scp->data);
250 talloc_steal(mem_ctx, blob.data);
252 /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
253 status = ndr_pull_struct_blob(&blob, mem_ctx, &_pkb,
254 (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
255 if (!NT_STATUS_IS_OK(status)) {
256 krb5_set_error_string(context, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob");
257 krb5_warnx(context, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob");
262 if (_pkb.version != 3) {
263 krb5_set_error_string(context, "LDB_message2entry_keys: could not parse PrimaryKerberos not version 3");
264 krb5_warnx(context, "LDB_message2entry_keys: could not parse PrimaryKerberos not version 3");
269 pkb3 = &_pkb.ctr.ctr3;
271 allocated_keys += pkb3->num_keys;
274 if (allocated_keys == 0) {
275 /* oh, no password. Apparently (comment in
276 * hdb-ldap.c) this violates the ASN.1, but this
277 * allows an entry with no keys (yet). */
281 /* allocate space to decode into */
282 entry_ex->entry.keys.len = 0;
283 entry_ex->entry.keys.val = calloc(allocated_keys, sizeof(Key));
284 if (entry_ex->entry.keys.val == NULL) {
289 if (hash && !(userAccountControl & UF_USE_DES_KEY_ONLY)) {
293 key.salt = NULL; /* No salt for this enc type */
295 ret = krb5_keyblock_init(context,
296 ENCTYPE_ARCFOUR_HMAC_MD5,
297 hash->hash, sizeof(hash->hash),
303 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
304 entry_ex->entry.keys.len++;
308 for (i=0; i < pkb3->num_keys; i++) {
312 if (!pkb3->keys[i].value) continue;
314 if (userAccountControl & UF_USE_DES_KEY_ONLY) {
315 switch (pkb3->keys[i].keytype) {
316 case ENCTYPE_DES_CBC_CRC:
317 case ENCTYPE_DES_CBC_MD5:
329 if (pkb3->salt.string) {
332 salt = data_blob_string_const(pkb3->salt.string);
334 key.salt = calloc(1, sizeof(*key.salt));
335 if (key.salt == NULL) {
340 key.salt->type = hdb_pw_salt;
342 ret = krb5_data_copy(&key.salt->salt, salt.data, salt.length);
350 ret = krb5_keyblock_init(context,
351 pkb3->keys[i].keytype,
352 pkb3->keys[i].value->data,
353 pkb3->keys[i].value->length,
364 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
365 entry_ex->entry.keys.len++;
371 entry_ex->entry.keys.len = 0;
373 if (entry_ex->entry.keys.len == 0 && entry_ex->entry.keys.val) {
374 free(entry_ex->entry.keys.val);
375 entry_ex->entry.keys.val = NULL;
381 * Construct an hdb_entry from a directory entry.
383 static krb5_error_code LDB_message2entry(krb5_context context, HDB *db,
384 TALLOC_CTX *mem_ctx, krb5_const_principal principal,
385 enum hdb_ldb_ent_type ent_type,
386 struct ldb_message *msg,
387 struct ldb_message *realm_ref_msg,
388 hdb_entry_ex *entry_ex)
390 unsigned int userAccountControl;
392 krb5_error_code ret = 0;
393 krb5_boolean is_computer = FALSE;
394 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg, "dnsRoot", NULL);
395 char *realm = strupper_talloc(mem_ctx, dnsdomain);
396 struct ldb_dn *domain_dn = samdb_result_dn((struct ldb_context *)db->hdb_db,
400 ldb_dn_new(mem_ctx, (struct ldb_context *)db->hdb_db, NULL));
402 struct hdb_ldb_private *private;
405 struct ldb_message_element *objectclasses;
406 struct ldb_val computer_val;
407 computer_val.data = discard_const_p(uint8_t,"computer");
408 computer_val.length = strlen((const char *)computer_val.data);
410 objectclasses = ldb_msg_find_element(msg, "objectClass");
412 if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
416 memset(entry_ex, 0, sizeof(*entry_ex));
419 krb5_set_error_string(context, "talloc_strdup: out of memory");
424 private = talloc(mem_ctx, struct hdb_ldb_private);
430 private->entry_ex = entry_ex;
432 talloc_set_destructor(private, hdb_ldb_destrutor);
434 entry_ex->ctx = private;
435 entry_ex->free_entry = hdb_ldb_free_entry;
437 userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
440 entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
441 if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
442 const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
443 if (!samAccountName) {
444 krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
448 samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
449 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
452 ret = copy_Principal(principal, entry_ex->entry.principal);
454 krb5_clear_error_string(context);
458 /* While we have copied the client principal, tests
459 * show that Win2k3 returns the 'corrected' realm, not
460 * the client-specified realm. This code attempts to
461 * replace the client principal's realm with the one
462 * we determine from our records */
464 /* this has to be with malloc() */
465 strdup_realm = strdup(realm);
468 krb5_clear_error_string(context);
471 free(*krb5_princ_realm(context, entry_ex->entry.principal));
472 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
475 entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
477 if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
478 entry_ex->entry.flags.invalid = 0;
479 entry_ex->entry.flags.server = 1;
480 entry_ex->entry.flags.forwardable = 1;
481 entry_ex->entry.flags.ok_as_delegate = 1;
484 if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
485 if (!is_computer && !ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL)) {
486 entry_ex->entry.flags.server = 0;
490 /* use 'whenCreated' */
491 entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
493 entry_ex->entry.created_by.principal = NULL;
495 entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
496 if (entry_ex->entry.modified_by == NULL) {
497 krb5_set_error_string(context, "malloc: out of memory");
502 /* use 'whenChanged' */
503 entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
505 entry_ex->entry.modified_by->principal = NULL;
507 entry_ex->entry.valid_start = NULL;
509 acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
510 if ((acct_expiry == (NTTIME)-1) ||
511 (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
512 entry_ex->entry.valid_end = NULL;
514 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
515 if (entry_ex->entry.valid_end == NULL) {
519 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
522 if (ent_type != HDB_LDB_ENT_TYPE_KRBTGT) {
523 NTTIME must_change_time
524 = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
526 if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) {
527 entry_ex->entry.pw_end = NULL;
529 entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
530 if (entry_ex->entry.pw_end == NULL) {
534 *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
537 entry_ex->entry.pw_end = NULL;
540 entry_ex->entry.max_life = NULL;
542 entry_ex->entry.max_renew = NULL;
544 entry_ex->entry.generation = NULL;
546 /* Get keys from the db */
547 ret = LDB_message2entry_keys(context, private, msg, userAccountControl, entry_ex);
549 /* Could be bougus data in the entry, or out of memory */
553 entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
554 if (entry_ex->entry.etypes == NULL) {
555 krb5_clear_error_string(context);
559 entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
560 entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
561 if (entry_ex->entry.etypes->val == NULL) {
562 krb5_clear_error_string(context);
566 for (i=0; i < entry_ex->entry.etypes->len; i++) {
567 entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype;
571 private->msg = talloc_steal(private, msg);
572 private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
573 private->samdb = (struct ldb_context *)db->hdb_db;
577 /* This doesn't free ent itself, that is for the eventual caller to do */
578 hdb_free_entry(context, entry_ex);
580 talloc_steal(db, entry_ex->ctx);
586 static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
588 krb5_const_principal principal,
589 enum hdb_ldb_ent_type ent_type,
590 struct ldb_dn *realm_dn,
591 struct ldb_message ***pmsg)
596 const char * const *princ_attrs = user_attrs;
599 char *short_princ_talloc;
601 struct ldb_result *res = NULL;
603 ret = krb5_unparse_name_flags(context, principal, KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ);
606 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
607 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
611 short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
613 if (!short_princ_talloc) {
614 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
619 case HDB_LDB_ENT_TYPE_CLIENT:
622 case HDB_LDB_ENT_TYPE_ANY:
625 case HDB_LDB_ENT_TYPE_KRBTGT:
626 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
629 case HDB_LDB_ENT_TYPE_SERVER:
630 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
636 krb5_set_error_string(context, "talloc_asprintf: out of memory");
640 lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
642 if (lret != LDB_SUCCESS) {
643 DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
644 return HDB_ERR_NOENTRY;
645 } else if (res->count == 0 || res->count > 1) {
646 DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count));
648 return HDB_ERR_NOENTRY;
650 talloc_steal(mem_ctx, res->msgs);
656 static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
659 struct ldb_message ***pmsg)
662 struct ldb_result *cross_ref_res;
663 struct ldb_dn *partitions_basedn = samdb_partitions_dn(ldb_ctx, mem_ctx);
665 ret = ldb_search_exp_fmt(ldb_ctx, mem_ctx, &cross_ref_res,
666 partitions_basedn, LDB_SCOPE_SUBTREE, realm_ref_attrs,
667 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
670 if (ret != LDB_SUCCESS) {
671 DEBUG(3, ("Failed to search to lookup realm(%s): %s\n", realm, ldb_errstring(ldb_ctx)));
672 talloc_free(cross_ref_res);
673 return HDB_ERR_NOENTRY;
674 } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) {
675 DEBUG(3, ("Failed find a single entry for realm %s: got %d\n", realm, cross_ref_res->count));
676 talloc_free(cross_ref_res);
677 return HDB_ERR_NOENTRY;
681 *pmsg = cross_ref_res->msgs;
682 talloc_steal(mem_ctx, cross_ref_res->msgs);
684 talloc_free(cross_ref_res);
690 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
692 if (db->hdb_master_key_set) {
693 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
694 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
695 return HDB_ERR_NOENTRY;
701 static krb5_error_code LDB_close(krb5_context context, HDB *db)
706 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
711 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
716 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
718 return HDB_ERR_DB_INUSE;
721 static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db,
723 krb5_const_principal principal,
725 hdb_entry_ex *entry_ex) {
727 char *principal_string;
729 struct ldb_message **msg = NULL;
730 struct ldb_message **realm_ref_msg = NULL;
732 ret = krb5_unparse_name(context, principal, &principal_string);
738 nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
739 mem_ctx, principal_string,
740 &msg, &realm_ref_msg);
741 free(principal_string);
742 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
743 return HDB_ERR_NOENTRY;
744 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
746 } else if (!NT_STATUS_IS_OK(nt_status)) {
750 ret = LDB_message2entry(context, db, mem_ctx,
751 principal, HDB_LDB_ENT_TYPE_CLIENT,
752 msg[0], realm_ref_msg[0], entry_ex);
756 static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
758 krb5_const_principal principal,
760 hdb_entry_ex *entry_ex)
763 struct ldb_message **msg = NULL;
764 struct ldb_message **realm_ref_msg = NULL;
765 struct ldb_dn *realm_dn;
767 krb5_principal alloc_principal = NULL;
768 if (principal->name.name_string.len != 2
769 || (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) {
771 return HDB_ERR_NOENTRY;
774 /* krbtgt case. Either us or a trusted realm */
775 if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
776 mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
778 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
779 * is in our db, then direct the caller at our primary
782 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg[0], "dnsRoot", NULL);
783 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
785 krb5_set_error_string(context, "strupper_talloc: out of memory");
789 ret = krb5_copy_principal(context, principal, &alloc_principal);
794 free(alloc_principal->name.name_string.val[1]);
795 alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
796 talloc_free(realm_fixed);
797 if (!alloc_principal->name.name_string.val[1]) {
798 krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
801 principal = alloc_principal;
802 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
804 /* we should lookup trusted domains */
805 return HDB_ERR_NOENTRY;
808 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
810 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
812 principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
815 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
816 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
820 ret = LDB_message2entry(context, db, mem_ctx,
821 principal, HDB_LDB_ENT_TYPE_KRBTGT,
822 msg[0], realm_ref_msg[0], entry_ex);
824 krb5_warnx(context, "LDB_fetch: message2entry failed");
829 static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
831 krb5_const_principal principal,
833 hdb_entry_ex *entry_ex)
837 struct ldb_message **msg = NULL;
838 struct ldb_message **realm_ref_msg = NULL;
839 struct ldb_dn *partitions_basedn = samdb_partitions_dn(db->hdb_db, mem_ctx);
840 if (principal->name.name_string.len >= 2) {
841 /* 'normal server' case */
844 struct ldb_dn *user_dn, *domain_dn;
845 char *principal_string;
847 ret = krb5_unparse_name_flags(context, principal,
848 KRB5_PRINCIPAL_UNPARSE_NO_REALM,
854 /* At this point we may find the host is known to be
855 * in a different realm, so we should generate a
856 * referral instead */
857 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
858 mem_ctx, principal_string,
859 &user_dn, &domain_dn);
860 free(principal_string);
862 if (!NT_STATUS_IS_OK(nt_status)) {
863 return HDB_ERR_NOENTRY;
866 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
867 mem_ctx, user_dn, &msg, user_attrs);
870 return HDB_ERR_NOENTRY;
873 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
874 mem_ctx, partitions_basedn, &realm_ref_msg, realm_ref_attrs,
875 "ncName=%s", ldb_dn_get_linearized(domain_dn));
878 return HDB_ERR_NOENTRY;
882 struct ldb_dn *realm_dn;
883 /* server as client principal case, but we must not lookup userPrincipalNames */
885 realm = krb5_principal_get_realm(context, principal);
887 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
888 mem_ctx, realm, &realm_ref_msg);
890 return HDB_ERR_NOENTRY;
893 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
895 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
897 principal, HDB_LDB_ENT_TYPE_SERVER, realm_dn, &msg);
904 ret = LDB_message2entry(context, db, mem_ctx,
905 principal, HDB_LDB_ENT_TYPE_SERVER,
906 msg[0], realm_ref_msg[0], entry_ex);
908 krb5_warnx(context, "LDB_fetch: message2entry failed");
914 static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
915 krb5_const_principal principal,
917 hdb_entry_ex *entry_ex)
919 krb5_error_code ret = HDB_ERR_NOENTRY;
921 TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
924 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
928 if (flags & HDB_F_GET_CLIENT) {
929 ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex);
930 if (ret != HDB_ERR_NOENTRY) goto done;
932 if (flags & HDB_F_GET_SERVER) {
933 ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
934 if (ret != HDB_ERR_NOENTRY) goto done;
935 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
936 if (ret != HDB_ERR_NOENTRY) goto done;
938 if (flags & HDB_F_GET_KRBTGT) {
939 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
940 if (ret != HDB_ERR_NOENTRY) goto done;
944 talloc_free(mem_ctx);
948 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
950 return HDB_ERR_DB_INUSE;
953 static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal)
955 return HDB_ERR_DB_INUSE;
959 struct ldb_context *ctx;
962 struct ldb_message **msgs;
963 struct ldb_message **realm_ref_msgs;
966 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
969 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_dbc;
971 hdb_entry_ex entry_ex;
972 memset(&entry_ex, '\0', sizeof(entry_ex));
975 return HDB_ERR_NOENTRY;
978 mem_ctx = talloc_named(priv, 0, "LDB_seq context");
981 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
985 if (priv->index < priv->count) {
986 ret = LDB_message2entry(context, db, mem_ctx,
987 NULL, HDB_LDB_ENT_TYPE_ANY,
988 priv->msgs[priv->index++],
989 priv->realm_ref_msgs[0], entry);
991 ret = HDB_ERR_NOENTRY;
998 talloc_free(mem_ctx);
1004 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
1005 hdb_entry_ex *entry)
1007 struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
1008 struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_dbc;
1010 struct ldb_dn *realm_dn = NULL;
1011 struct ldb_result *res = NULL;
1012 struct ldb_message **realm_ref_msgs = NULL;
1013 krb5_error_code ret;
1014 TALLOC_CTX *mem_ctx;
1022 priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
1024 krb5_set_error_string(context, "talloc: out of memory");
1028 priv->ctx = ldb_ctx;
1031 priv->realm_ref_msgs = NULL;
1034 mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
1037 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
1041 ret = krb5_get_default_realm(context, &realm);
1047 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
1048 mem_ctx, realm, &realm_ref_msgs);
1054 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
1055 return HDB_ERR_NOENTRY;
1058 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msgs[0], "nCName", NULL);
1060 priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
1062 lret = ldb_search(ldb_ctx, realm_dn,
1063 LDB_SCOPE_SUBTREE, "(objectClass=user)",
1066 if (lret != LDB_SUCCESS) {
1068 return HDB_ERR_NOENTRY;
1071 priv->count = res->count;
1072 priv->msgs = talloc_steal(priv, res->msgs);
1077 ret = LDB_seq(context, db, flags, entry);
1083 talloc_free(mem_ctx);
1088 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
1089 hdb_entry_ex *entry)
1091 return LDB_seq(context, db, flags, entry);
1094 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
1100 /* This interface is to be called by the KDC, which is expecting Samba
1101 * calling conventions. It is also called by a wrapper
1102 * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
1105 NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx,
1106 krb5_context context, struct HDB **db, const char *arg)
1109 struct auth_session_info *session_info;
1110 *db = talloc(mem_ctx, HDB);
1112 krb5_set_error_string(context, "malloc: out of memory");
1113 return NT_STATUS_NO_MEMORY;
1116 (*db)->hdb_master_key_set = 0;
1117 (*db)->hdb_db = NULL;
1119 nt_status = auth_system_session_info(*db, &session_info);
1120 if (!NT_STATUS_IS_OK(nt_status)) {
1124 /* The idea here is very simple. Using Kerberos to
1125 * authenticate the KDC to the LDAP server is higly likely to
1128 * In future we may set this up to use EXERNAL and SSL
1129 * certificates, for now it will almost certainly be NTLMSSP
1132 cli_credentials_set_kerberos_state(session_info->credentials,
1133 CRED_DONT_USE_KERBEROS);
1135 /* Setup the link to LDB */
1136 (*db)->hdb_db = samdb_connect(*db, session_info);
1137 if ((*db)->hdb_db == NULL) {
1138 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1139 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1142 (*db)->hdb_dbc = NULL;
1143 (*db)->hdb_open = LDB_open;
1144 (*db)->hdb_close = LDB_close;
1145 (*db)->hdb_fetch = LDB_fetch;
1146 (*db)->hdb_store = LDB_store;
1147 (*db)->hdb_remove = LDB_remove;
1148 (*db)->hdb_firstkey = LDB_firstkey;
1149 (*db)->hdb_nextkey = LDB_nextkey;
1150 (*db)->hdb_lock = LDB_lock;
1151 (*db)->hdb_unlock = LDB_unlock;
1152 (*db)->hdb_rename = LDB_rename;
1153 /* we don't implement these, as we are not a lockable database */
1154 (*db)->hdb__get = NULL;
1155 (*db)->hdb__put = NULL;
1156 /* kadmin should not be used for deletes - use other tools instead */
1157 (*db)->hdb__del = NULL;
1158 (*db)->hdb_destroy = LDB_destroy;
1160 return NT_STATUS_OK;
1163 krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
1166 /* The global kdc_mem_ctx, Disgusting, ugly hack, but it means one less private hook */
1167 nt_status = kdc_hdb_ldb_create(kdc_mem_ctx, context, db, arg);
1169 if (NT_STATUS_IS_OK(nt_status)) {