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"
47 #include "util/util_ldb.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
,
183 struct smb_iconv_convenience
*iconv_convenience
,
185 struct ldb_message
*msg
,
186 unsigned int userAccountControl
,
187 hdb_entry_ex
*entry_ex
)
189 krb5_error_code ret
= 0;
190 enum ndr_err_code ndr_err
;
191 struct samr_Password
*hash
;
192 const struct ldb_val
*sc_val
;
193 struct supplementalCredentialsBlob scb
;
194 struct supplementalCredentialsPackage
*scp
= NULL
;
195 struct package_PrimaryKerberosBlob _pkb
;
196 struct package_PrimaryKerberosCtr3
*pkb3
= NULL
;
198 uint32_t allocated_keys
= 0;
200 entry_ex
->entry
.keys
.val
= NULL
;
201 entry_ex
->entry
.keys
.len
= 0;
203 entry_ex
->entry
.kvno
= ldb_msg_find_attr_as_int(msg
, "msDS-KeyVersionNumber", 0);
205 /* Get keys from the db */
207 hash
= samdb_result_hash(mem_ctx
, msg
, "unicodePwd");
208 sc_val
= ldb_msg_find_ldb_val(msg
, "supplementalCredentials");
210 /* unicodePwd for enctype 0x17 (23) if present */
215 /* supplementalCredentials if present */
217 ndr_err
= ndr_pull_struct_blob_all(sc_val
, mem_ctx
, iconv_convenience
, &scb
,
218 (ndr_pull_flags_fn_t
)ndr_pull_supplementalCredentialsBlob
);
219 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
220 dump_data(0, sc_val
->data
, sc_val
->length
);
225 for (i
=0; i
< scb
.sub
.num_packages
; i
++) {
226 if (scb
.sub
.packages
[i
].unknown1
!= 0x00000001) {
230 if (strcmp("Primary:Kerberos", scb
.sub
.packages
[i
].name
) != 0) {
234 if (!scb
.sub
.packages
[i
].data
|| !scb
.sub
.packages
[i
].data
[0]) {
238 scp
= &scb
.sub
.packages
[i
];
242 /* Primary:Kerberos element of supplementalCredentials */
246 blob
= strhex_to_data_blob(scp
->data
);
251 talloc_steal(mem_ctx
, blob
.data
);
253 /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
254 ndr_err
= ndr_pull_struct_blob(&blob
, mem_ctx
, iconv_convenience
, &_pkb
,
255 (ndr_pull_flags_fn_t
)ndr_pull_package_PrimaryKerberosBlob
);
256 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
257 krb5_set_error_string(context
, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob");
258 krb5_warnx(context
, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob");
263 if (_pkb
.version
!= 3) {
264 krb5_set_error_string(context
, "LDB_message2entry_keys: could not parse PrimaryKerberos not version 3");
265 krb5_warnx(context
, "LDB_message2entry_keys: could not parse PrimaryKerberos not version 3");
270 pkb3
= &_pkb
.ctr
.ctr3
;
272 allocated_keys
+= pkb3
->num_keys
;
275 if (allocated_keys
== 0) {
276 /* oh, no password. Apparently (comment in
277 * hdb-ldap.c) this violates the ASN.1, but this
278 * allows an entry with no keys (yet). */
282 /* allocate space to decode into */
283 entry_ex
->entry
.keys
.len
= 0;
284 entry_ex
->entry
.keys
.val
= calloc(allocated_keys
, sizeof(Key
));
285 if (entry_ex
->entry
.keys
.val
== NULL
) {
290 if (hash
&& !(userAccountControl
& UF_USE_DES_KEY_ONLY
)) {
294 key
.salt
= NULL
; /* No salt for this enc type */
296 ret
= krb5_keyblock_init(context
,
297 ENCTYPE_ARCFOUR_HMAC_MD5
,
298 hash
->hash
, sizeof(hash
->hash
),
304 entry_ex
->entry
.keys
.val
[entry_ex
->entry
.keys
.len
] = key
;
305 entry_ex
->entry
.keys
.len
++;
309 for (i
=0; i
< pkb3
->num_keys
; i
++) {
313 if (!pkb3
->keys
[i
].value
) continue;
315 if (userAccountControl
& UF_USE_DES_KEY_ONLY
) {
316 switch (pkb3
->keys
[i
].keytype
) {
317 case ENCTYPE_DES_CBC_CRC
:
318 case ENCTYPE_DES_CBC_MD5
:
330 if (pkb3
->salt
.string
) {
333 salt
= data_blob_string_const(pkb3
->salt
.string
);
335 key
.salt
= calloc(1, sizeof(*key
.salt
));
336 if (key
.salt
== NULL
) {
341 key
.salt
->type
= hdb_pw_salt
;
343 ret
= krb5_data_copy(&key
.salt
->salt
, salt
.data
, salt
.length
);
351 ret
= krb5_keyblock_init(context
,
352 pkb3
->keys
[i
].keytype
,
353 pkb3
->keys
[i
].value
->data
,
354 pkb3
->keys
[i
].value
->length
,
365 entry_ex
->entry
.keys
.val
[entry_ex
->entry
.keys
.len
] = key
;
366 entry_ex
->entry
.keys
.len
++;
372 entry_ex
->entry
.keys
.len
= 0;
374 if (entry_ex
->entry
.keys
.len
== 0 && entry_ex
->entry
.keys
.val
) {
375 free(entry_ex
->entry
.keys
.val
);
376 entry_ex
->entry
.keys
.val
= NULL
;
382 * Construct an hdb_entry from a directory entry.
384 static krb5_error_code
LDB_message2entry(krb5_context context
, HDB
*db
,
385 TALLOC_CTX
*mem_ctx
, krb5_const_principal principal
,
386 enum hdb_ldb_ent_type ent_type
,
387 struct ldb_message
*msg
,
388 struct ldb_message
*realm_ref_msg
,
389 hdb_entry_ex
*entry_ex
)
391 unsigned int userAccountControl
;
393 krb5_error_code ret
= 0;
394 krb5_boolean is_computer
= FALSE
;
395 const char *dnsdomain
= ldb_msg_find_attr_as_string(realm_ref_msg
, "dnsRoot", NULL
);
396 char *realm
= strupper_talloc(mem_ctx
, dnsdomain
);
397 struct loadparm_context
*lp_ctx
= ldb_get_opaque((struct ldb_context
*)db
->hdb_db
, "loadparm");
398 struct ldb_dn
*domain_dn
= samdb_result_dn((struct ldb_context
*)db
->hdb_db
,
402 ldb_dn_new(mem_ctx
, (struct ldb_context
*)db
->hdb_db
, NULL
));
404 struct hdb_ldb_private
*private;
407 struct ldb_message_element
*objectclasses
;
408 struct ldb_val computer_val
;
409 computer_val
.data
= discard_const_p(uint8_t,"computer");
410 computer_val
.length
= strlen((const char *)computer_val
.data
);
412 objectclasses
= ldb_msg_find_element(msg
, "objectClass");
414 if (objectclasses
&& ldb_msg_find_val(objectclasses
, &computer_val
)) {
418 memset(entry_ex
, 0, sizeof(*entry_ex
));
421 krb5_set_error_string(context
, "talloc_strdup: out of memory");
426 private = talloc(mem_ctx
, struct hdb_ldb_private
);
432 private->entry_ex
= entry_ex
;
433 private->iconv_convenience
= lp_iconv_convenience(lp_ctx
);
434 private->netbios_name
= lp_netbios_name(lp_ctx
);
436 talloc_set_destructor(private, hdb_ldb_destrutor
);
438 entry_ex
->ctx
= private;
439 entry_ex
->free_entry
= hdb_ldb_free_entry
;
441 userAccountControl
= ldb_msg_find_attr_as_uint(msg
, "userAccountControl", 0);
444 entry_ex
->entry
.principal
= malloc(sizeof(*(entry_ex
->entry
.principal
)));
445 if (ent_type
== HDB_LDB_ENT_TYPE_ANY
&& principal
== NULL
) {
446 const char *samAccountName
= ldb_msg_find_attr_as_string(msg
, "samAccountName", NULL
);
447 if (!samAccountName
) {
448 krb5_set_error_string(context
, "LDB_message2entry: no samAccountName present");
452 samAccountName
= ldb_msg_find_attr_as_string(msg
, "samAccountName", NULL
);
453 krb5_make_principal(context
, &entry_ex
->entry
.principal
, realm
, samAccountName
, NULL
);
456 ret
= copy_Principal(principal
, entry_ex
->entry
.principal
);
458 krb5_clear_error_string(context
);
462 /* While we have copied the client principal, tests
463 * show that Win2k3 returns the 'corrected' realm, not
464 * the client-specified realm. This code attempts to
465 * replace the client principal's realm with the one
466 * we determine from our records */
468 /* this has to be with malloc() */
469 strdup_realm
= strdup(realm
);
472 krb5_clear_error_string(context
);
475 free(*krb5_princ_realm(context
, entry_ex
->entry
.principal
));
476 krb5_princ_set_realm(context
, entry_ex
->entry
.principal
, &strdup_realm
);
479 entry_ex
->entry
.flags
= uf2HDBFlags(context
, userAccountControl
, ent_type
);
481 if (ent_type
== HDB_LDB_ENT_TYPE_KRBTGT
) {
482 entry_ex
->entry
.flags
.invalid
= 0;
483 entry_ex
->entry
.flags
.server
= 1;
484 entry_ex
->entry
.flags
.forwardable
= 1;
485 entry_ex
->entry
.flags
.ok_as_delegate
= 1;
488 if (lp_parm_bool(lp_ctx
, NULL
, "kdc", "require spn for service", true)) {
489 if (!is_computer
&& !ldb_msg_find_attr_as_string(msg
, "servicePrincipalName", NULL
)) {
490 entry_ex
->entry
.flags
.server
= 0;
494 /* use 'whenCreated' */
495 entry_ex
->entry
.created_by
.time
= ldb_msg_find_krb5time_ldap_time(msg
, "whenCreated", 0);
497 entry_ex
->entry
.created_by
.principal
= NULL
;
499 entry_ex
->entry
.modified_by
= (Event
*) malloc(sizeof(Event
));
500 if (entry_ex
->entry
.modified_by
== NULL
) {
501 krb5_set_error_string(context
, "malloc: out of memory");
506 /* use 'whenChanged' */
507 entry_ex
->entry
.modified_by
->time
= ldb_msg_find_krb5time_ldap_time(msg
, "whenChanged", 0);
509 entry_ex
->entry
.modified_by
->principal
= NULL
;
511 entry_ex
->entry
.valid_start
= NULL
;
513 acct_expiry
= samdb_result_account_expires(msg
);
514 if (acct_expiry
== 0x7FFFFFFFFFFFFFFFULL
) {
515 entry_ex
->entry
.valid_end
= NULL
;
517 entry_ex
->entry
.valid_end
= malloc(sizeof(*entry_ex
->entry
.valid_end
));
518 if (entry_ex
->entry
.valid_end
== NULL
) {
522 *entry_ex
->entry
.valid_end
= nt_time_to_unix(acct_expiry
);
525 if (ent_type
!= HDB_LDB_ENT_TYPE_KRBTGT
) {
526 NTTIME must_change_time
527 = samdb_result_force_password_change((struct ldb_context
*)db
->hdb_db
, mem_ctx
,
529 if (must_change_time
== 0x7FFFFFFFFFFFFFFFULL
) {
530 entry_ex
->entry
.pw_end
= NULL
;
532 entry_ex
->entry
.pw_end
= malloc(sizeof(*entry_ex
->entry
.pw_end
));
533 if (entry_ex
->entry
.pw_end
== NULL
) {
537 *entry_ex
->entry
.pw_end
= nt_time_to_unix(must_change_time
);
540 entry_ex
->entry
.pw_end
= NULL
;
543 entry_ex
->entry
.max_life
= NULL
;
545 entry_ex
->entry
.max_renew
= NULL
;
547 entry_ex
->entry
.generation
= NULL
;
549 /* Get keys from the db */
550 ret
= LDB_message2entry_keys(context
, private->iconv_convenience
, private, msg
, userAccountControl
, entry_ex
);
552 /* Could be bougus data in the entry, or out of memory */
556 entry_ex
->entry
.etypes
= malloc(sizeof(*(entry_ex
->entry
.etypes
)));
557 if (entry_ex
->entry
.etypes
== NULL
) {
558 krb5_clear_error_string(context
);
562 entry_ex
->entry
.etypes
->len
= entry_ex
->entry
.keys
.len
;
563 entry_ex
->entry
.etypes
->val
= calloc(entry_ex
->entry
.etypes
->len
, sizeof(int));
564 if (entry_ex
->entry
.etypes
->val
== NULL
) {
565 krb5_clear_error_string(context
);
569 for (i
=0; i
< entry_ex
->entry
.etypes
->len
; i
++) {
570 entry_ex
->entry
.etypes
->val
[i
] = entry_ex
->entry
.keys
.val
[i
].key
.keytype
;
574 private->msg
= talloc_steal(private, msg
);
575 private->realm_ref_msg
= talloc_steal(private, realm_ref_msg
);
576 private->samdb
= (struct ldb_context
*)db
->hdb_db
;
580 /* This doesn't free ent itself, that is for the eventual caller to do */
581 hdb_free_entry(context
, entry_ex
);
583 talloc_steal(db
, entry_ex
->ctx
);
589 static krb5_error_code
LDB_lookup_principal(krb5_context context
, struct ldb_context
*ldb_ctx
,
591 krb5_const_principal principal
,
592 enum hdb_ldb_ent_type ent_type
,
593 struct ldb_dn
*realm_dn
,
594 struct ldb_message
***pmsg
)
599 const char * const *princ_attrs
= user_attrs
;
602 char *short_princ_talloc
;
604 struct ldb_result
*res
= NULL
;
606 ret
= krb5_unparse_name_flags(context
, principal
, KRB5_PRINCIPAL_UNPARSE_NO_REALM
, &short_princ
);
609 krb5_set_error_string(context
, "LDB_lookup_principal: could not parse principal");
610 krb5_warnx(context
, "LDB_lookup_principal: could not parse principal");
614 short_princ_talloc
= talloc_strdup(mem_ctx
, short_princ
);
616 if (!short_princ_talloc
) {
617 krb5_set_error_string(context
, "LDB_lookup_principal: talloc_strdup() failed!");
622 case HDB_LDB_ENT_TYPE_CLIENT
:
625 case HDB_LDB_ENT_TYPE_ANY
:
628 case HDB_LDB_ENT_TYPE_KRBTGT
:
629 filter
= talloc_asprintf(mem_ctx
, "(&(objectClass=user)(samAccountName=%s))",
632 case HDB_LDB_ENT_TYPE_SERVER
:
633 filter
= talloc_asprintf(mem_ctx
, "(&(objectClass=user)(samAccountName=%s))",
639 krb5_set_error_string(context
, "talloc_asprintf: out of memory");
643 lret
= ldb_search(ldb_ctx
, realm_dn
, LDB_SCOPE_SUBTREE
, filter
, princ_attrs
, &res
);
645 if (lret
!= LDB_SUCCESS
) {
646 DEBUG(3, ("Failed to search for %s: %s\n", filter
, ldb_errstring(ldb_ctx
)));
647 return HDB_ERR_NOENTRY
;
648 } else if (res
->count
== 0 || res
->count
> 1) {
649 DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter
, res
->count
));
651 return HDB_ERR_NOENTRY
;
653 talloc_steal(mem_ctx
, res
->msgs
);
659 static krb5_error_code
LDB_lookup_realm(krb5_context context
, struct ldb_context
*ldb_ctx
,
662 struct ldb_message
***pmsg
)
665 struct ldb_result
*cross_ref_res
;
666 struct ldb_dn
*partitions_basedn
= samdb_partitions_dn(ldb_ctx
, mem_ctx
);
668 ret
= ldb_search_exp_fmt(ldb_ctx
, mem_ctx
, &cross_ref_res
,
669 partitions_basedn
, LDB_SCOPE_SUBTREE
, realm_ref_attrs
,
670 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
673 if (ret
!= LDB_SUCCESS
) {
674 DEBUG(3, ("Failed to search to lookup realm(%s): %s\n", realm
, ldb_errstring(ldb_ctx
)));
675 talloc_free(cross_ref_res
);
676 return HDB_ERR_NOENTRY
;
677 } else if (cross_ref_res
->count
== 0 || cross_ref_res
->count
> 1) {
678 DEBUG(3, ("Failed find a single entry for realm %s: got %d\n", realm
, cross_ref_res
->count
));
679 talloc_free(cross_ref_res
);
680 return HDB_ERR_NOENTRY
;
684 *pmsg
= cross_ref_res
->msgs
;
685 talloc_steal(mem_ctx
, cross_ref_res
->msgs
);
687 talloc_free(cross_ref_res
);
693 static krb5_error_code
LDB_open(krb5_context context
, HDB
*db
, int flags
, mode_t mode
)
695 if (db
->hdb_master_key_set
) {
696 krb5_warnx(context
, "LDB_open: use of a master key incompatible with LDB\n");
697 krb5_set_error_string(context
, "LDB_open: use of a master key incompatible with LDB\n");
698 return HDB_ERR_NOENTRY
;
704 static krb5_error_code
LDB_close(krb5_context context
, HDB
*db
)
709 static krb5_error_code
LDB_lock(krb5_context context
, HDB
*db
, int operation
)
714 static krb5_error_code
LDB_unlock(krb5_context context
, HDB
*db
)
719 static krb5_error_code
LDB_rename(krb5_context context
, HDB
*db
, const char *new_name
)
721 return HDB_ERR_DB_INUSE
;
724 static krb5_error_code
LDB_fetch_client(krb5_context context
, HDB
*db
,
726 krb5_const_principal principal
,
728 hdb_entry_ex
*entry_ex
) {
730 char *principal_string
;
732 struct ldb_message
**msg
= NULL
;
733 struct ldb_message
**realm_ref_msg
= NULL
;
735 ret
= krb5_unparse_name(context
, principal
, &principal_string
);
741 nt_status
= sam_get_results_principal((struct ldb_context
*)db
->hdb_db
,
742 mem_ctx
, principal_string
,
743 &msg
, &realm_ref_msg
);
744 free(principal_string
);
745 if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_NO_SUCH_USER
)) {
746 return HDB_ERR_NOENTRY
;
747 } else if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_NO_MEMORY
)) {
749 } else if (!NT_STATUS_IS_OK(nt_status
)) {
753 ret
= LDB_message2entry(context
, db
, mem_ctx
,
754 principal
, HDB_LDB_ENT_TYPE_CLIENT
,
755 msg
[0], realm_ref_msg
[0], entry_ex
);
759 static krb5_error_code
LDB_fetch_krbtgt(krb5_context context
, HDB
*db
,
761 krb5_const_principal principal
,
763 hdb_entry_ex
*entry_ex
)
766 struct ldb_message
**msg
= NULL
;
767 struct ldb_message
**realm_ref_msg
= NULL
;
768 struct ldb_dn
*realm_dn
;
770 krb5_principal alloc_principal
= NULL
;
771 if (principal
->name
.name_string
.len
!= 2
772 || (strcmp(principal
->name
.name_string
.val
[0], KRB5_TGS_NAME
) != 0)) {
774 return HDB_ERR_NOENTRY
;
777 /* krbtgt case. Either us or a trusted realm */
778 if ((LDB_lookup_realm(context
, (struct ldb_context
*)db
->hdb_db
,
779 mem_ctx
, principal
->name
.name_string
.val
[1], &realm_ref_msg
) == 0)) {
781 /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
782 * is in our db, then direct the caller at our primary
785 const char *dnsdomain
= ldb_msg_find_attr_as_string(realm_ref_msg
[0], "dnsRoot", NULL
);
786 char *realm_fixed
= strupper_talloc(mem_ctx
, dnsdomain
);
788 krb5_set_error_string(context
, "strupper_talloc: out of memory");
792 ret
= krb5_copy_principal(context
, principal
, &alloc_principal
);
797 free(alloc_principal
->name
.name_string
.val
[1]);
798 alloc_principal
->name
.name_string
.val
[1] = strdup(realm_fixed
);
799 talloc_free(realm_fixed
);
800 if (!alloc_principal
->name
.name_string
.val
[1]) {
801 krb5_set_error_string(context
, "LDB_fetch: strdup() failed!");
804 principal
= alloc_principal
;
805 realm_dn
= samdb_result_dn((struct ldb_context
*)db
->hdb_db
, mem_ctx
, realm_ref_msg
[0], "nCName", NULL
);
807 /* we should lookup trusted domains */
808 return HDB_ERR_NOENTRY
;
811 realm_dn
= samdb_result_dn((struct ldb_context
*)db
->hdb_db
, mem_ctx
, realm_ref_msg
[0], "nCName", NULL
);
813 ret
= LDB_lookup_principal(context
, (struct ldb_context
*)db
->hdb_db
,
815 principal
, HDB_LDB_ENT_TYPE_KRBTGT
, realm_dn
, &msg
);
818 krb5_warnx(context
, "LDB_fetch: could not find principal in DB");
819 krb5_set_error_string(context
, "LDB_fetch: could not find principal in DB");
823 ret
= LDB_message2entry(context
, db
, mem_ctx
,
824 principal
, HDB_LDB_ENT_TYPE_KRBTGT
,
825 msg
[0], realm_ref_msg
[0], entry_ex
);
827 krb5_warnx(context
, "LDB_fetch: message2entry failed");
832 static krb5_error_code
LDB_fetch_server(krb5_context context
, HDB
*db
,
834 krb5_const_principal principal
,
836 hdb_entry_ex
*entry_ex
)
840 struct ldb_message
**msg
= NULL
;
841 struct ldb_message
**realm_ref_msg
= NULL
;
842 struct ldb_dn
*partitions_basedn
= samdb_partitions_dn(db
->hdb_db
, mem_ctx
);
843 if (principal
->name
.name_string
.len
>= 2) {
844 /* 'normal server' case */
847 struct ldb_dn
*user_dn
, *domain_dn
;
848 char *principal_string
;
850 ret
= krb5_unparse_name_flags(context
, principal
,
851 KRB5_PRINCIPAL_UNPARSE_NO_REALM
,
857 /* At this point we may find the host is known to be
858 * in a different realm, so we should generate a
859 * referral instead */
860 nt_status
= crack_service_principal_name((struct ldb_context
*)db
->hdb_db
,
861 mem_ctx
, principal_string
,
862 &user_dn
, &domain_dn
);
863 free(principal_string
);
865 if (!NT_STATUS_IS_OK(nt_status
)) {
866 return HDB_ERR_NOENTRY
;
869 ldb_ret
= gendb_search_dn((struct ldb_context
*)db
->hdb_db
,
870 mem_ctx
, user_dn
, &msg
, user_attrs
);
873 return HDB_ERR_NOENTRY
;
876 ldb_ret
= gendb_search((struct ldb_context
*)db
->hdb_db
,
877 mem_ctx
, partitions_basedn
, &realm_ref_msg
, realm_ref_attrs
,
878 "ncName=%s", ldb_dn_get_linearized(domain_dn
));
881 return HDB_ERR_NOENTRY
;
885 struct ldb_dn
*realm_dn
;
886 /* server as client principal case, but we must not lookup userPrincipalNames */
888 realm
= krb5_principal_get_realm(context
, principal
);
890 ret
= LDB_lookup_realm(context
, (struct ldb_context
*)db
->hdb_db
,
891 mem_ctx
, realm
, &realm_ref_msg
);
893 return HDB_ERR_NOENTRY
;
896 realm_dn
= samdb_result_dn((struct ldb_context
*)db
->hdb_db
, mem_ctx
, realm_ref_msg
[0], "nCName", NULL
);
898 ret
= LDB_lookup_principal(context
, (struct ldb_context
*)db
->hdb_db
,
900 principal
, HDB_LDB_ENT_TYPE_SERVER
, realm_dn
, &msg
);
907 ret
= LDB_message2entry(context
, db
, mem_ctx
,
908 principal
, HDB_LDB_ENT_TYPE_SERVER
,
909 msg
[0], realm_ref_msg
[0], entry_ex
);
911 krb5_warnx(context
, "LDB_fetch: message2entry failed");
917 static krb5_error_code
LDB_fetch(krb5_context context
, HDB
*db
,
918 krb5_const_principal principal
,
920 hdb_entry_ex
*entry_ex
)
922 krb5_error_code ret
= HDB_ERR_NOENTRY
;
924 TALLOC_CTX
*mem_ctx
= talloc_named(db
, 0, "LDB_fetch context");
927 krb5_set_error_string(context
, "LDB_fetch: talloc_named() failed!");
931 if (flags
& HDB_F_GET_CLIENT
) {
932 ret
= LDB_fetch_client(context
, db
, mem_ctx
, principal
, flags
, entry_ex
);
933 if (ret
!= HDB_ERR_NOENTRY
) goto done
;
935 if (flags
& HDB_F_GET_SERVER
) {
936 ret
= LDB_fetch_server(context
, db
, mem_ctx
, principal
, flags
, entry_ex
);
937 if (ret
!= HDB_ERR_NOENTRY
) goto done
;
938 ret
= LDB_fetch_krbtgt(context
, db
, mem_ctx
, principal
, flags
, entry_ex
);
939 if (ret
!= HDB_ERR_NOENTRY
) goto done
;
941 if (flags
& HDB_F_GET_KRBTGT
) {
942 ret
= LDB_fetch_krbtgt(context
, db
, mem_ctx
, principal
, flags
, entry_ex
);
943 if (ret
!= HDB_ERR_NOENTRY
) goto done
;
947 talloc_free(mem_ctx
);
951 static krb5_error_code
LDB_store(krb5_context context
, HDB
*db
, unsigned flags
, hdb_entry_ex
*entry
)
953 return HDB_ERR_DB_INUSE
;
956 static krb5_error_code
LDB_remove(krb5_context context
, HDB
*db
, krb5_const_principal principal
)
958 return HDB_ERR_DB_INUSE
;
962 struct ldb_context
*ctx
;
965 struct ldb_message
**msgs
;
966 struct ldb_message
**realm_ref_msgs
;
969 static krb5_error_code
LDB_seq(krb5_context context
, HDB
*db
, unsigned flags
, hdb_entry_ex
*entry
)
972 struct hdb_ldb_seq
*priv
= (struct hdb_ldb_seq
*)db
->hdb_dbc
;
974 hdb_entry_ex entry_ex
;
975 memset(&entry_ex
, '\0', sizeof(entry_ex
));
978 return HDB_ERR_NOENTRY
;
981 mem_ctx
= talloc_named(priv
, 0, "LDB_seq context");
984 krb5_set_error_string(context
, "LDB_seq: talloc_named() failed!");
988 if (priv
->index
< priv
->count
) {
989 ret
= LDB_message2entry(context
, db
, mem_ctx
,
990 NULL
, HDB_LDB_ENT_TYPE_ANY
,
991 priv
->msgs
[priv
->index
++],
992 priv
->realm_ref_msgs
[0], entry
);
994 ret
= HDB_ERR_NOENTRY
;
1001 talloc_free(mem_ctx
);
1007 static krb5_error_code
LDB_firstkey(krb5_context context
, HDB
*db
, unsigned flags
,
1008 hdb_entry_ex
*entry
)
1010 struct ldb_context
*ldb_ctx
= (struct ldb_context
*)db
->hdb_db
;
1011 struct hdb_ldb_seq
*priv
= (struct hdb_ldb_seq
*)db
->hdb_dbc
;
1013 struct ldb_dn
*realm_dn
= NULL
;
1014 struct ldb_result
*res
= NULL
;
1015 struct ldb_message
**realm_ref_msgs
= NULL
;
1016 krb5_error_code ret
;
1017 TALLOC_CTX
*mem_ctx
;
1025 priv
= (struct hdb_ldb_seq
*) talloc(db
, struct hdb_ldb_seq
);
1027 krb5_set_error_string(context
, "talloc: out of memory");
1031 priv
->ctx
= ldb_ctx
;
1034 priv
->realm_ref_msgs
= NULL
;
1037 mem_ctx
= talloc_named(priv
, 0, "LDB_firstkey context");
1040 krb5_set_error_string(context
, "LDB_firstkey: talloc_named() failed!");
1044 ret
= krb5_get_default_realm(context
, &realm
);
1050 ret
= LDB_lookup_realm(context
, (struct ldb_context
*)db
->hdb_db
,
1051 mem_ctx
, realm
, &realm_ref_msgs
);
1057 krb5_warnx(context
, "LDB_firstkey: could not find realm\n");
1058 return HDB_ERR_NOENTRY
;
1061 realm_dn
= samdb_result_dn((struct ldb_context
*)db
->hdb_db
, mem_ctx
, realm_ref_msgs
[0], "nCName", NULL
);
1063 priv
->realm_ref_msgs
= talloc_steal(priv
, realm_ref_msgs
);
1065 lret
= ldb_search(ldb_ctx
, realm_dn
,
1066 LDB_SCOPE_SUBTREE
, "(objectClass=user)",
1069 if (lret
!= LDB_SUCCESS
) {
1071 return HDB_ERR_NOENTRY
;
1074 priv
->count
= res
->count
;
1075 priv
->msgs
= talloc_steal(priv
, res
->msgs
);
1080 ret
= LDB_seq(context
, db
, flags
, entry
);
1086 talloc_free(mem_ctx
);
1091 static krb5_error_code
LDB_nextkey(krb5_context context
, HDB
*db
, unsigned flags
,
1092 hdb_entry_ex
*entry
)
1094 return LDB_seq(context
, db
, flags
, entry
);
1097 static krb5_error_code
LDB_destroy(krb5_context context
, HDB
*db
)
1103 /* This interface is to be called by the KDC, which is expecting Samba
1104 * calling conventions. It is also called by a wrapper
1105 * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
1108 NTSTATUS
kdc_hdb_ldb_create(TALLOC_CTX
*mem_ctx
,
1109 struct loadparm_context
*lp_ctx
,
1110 krb5_context context
, struct HDB
**db
, const char *arg
)
1113 struct auth_session_info
*session_info
;
1114 *db
= talloc(mem_ctx
, HDB
);
1116 krb5_set_error_string(context
, "malloc: out of memory");
1117 return NT_STATUS_NO_MEMORY
;
1120 (*db
)->hdb_master_key_set
= 0;
1121 (*db
)->hdb_db
= NULL
;
1123 nt_status
= auth_system_session_info(*db
, lp_ctx
, &session_info
);
1124 if (!NT_STATUS_IS_OK(nt_status
)) {
1128 /* The idea here is very simple. Using Kerberos to
1129 * authenticate the KDC to the LDAP server is higly likely to
1132 * In future we may set this up to use EXERNAL and SSL
1133 * certificates, for now it will almost certainly be NTLMSSP
1136 cli_credentials_set_kerberos_state(session_info
->credentials
,
1137 CRED_DONT_USE_KERBEROS
);
1139 /* Setup the link to LDB */
1140 (*db
)->hdb_db
= samdb_connect(*db
, lp_ctx
, session_info
);
1141 if ((*db
)->hdb_db
== NULL
) {
1142 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1143 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO
;
1146 (*db
)->hdb_dbc
= NULL
;
1147 (*db
)->hdb_open
= LDB_open
;
1148 (*db
)->hdb_close
= LDB_close
;
1149 (*db
)->hdb_fetch
= LDB_fetch
;
1150 (*db
)->hdb_store
= LDB_store
;
1151 (*db
)->hdb_remove
= LDB_remove
;
1152 (*db
)->hdb_firstkey
= LDB_firstkey
;
1153 (*db
)->hdb_nextkey
= LDB_nextkey
;
1154 (*db
)->hdb_lock
= LDB_lock
;
1155 (*db
)->hdb_unlock
= LDB_unlock
;
1156 (*db
)->hdb_rename
= LDB_rename
;
1157 /* we don't implement these, as we are not a lockable database */
1158 (*db
)->hdb__get
= NULL
;
1159 (*db
)->hdb__put
= NULL
;
1160 /* kadmin should not be used for deletes - use other tools instead */
1161 (*db
)->hdb__del
= NULL
;
1162 (*db
)->hdb_destroy
= LDB_destroy
;
1164 return NT_STATUS_OK
;
1167 krb5_error_code
hdb_ldb_create(krb5_context context
, struct HDB
**db
, const char *arg
)
1170 /* The global kdc_mem_ctx and kdc_lp_ctx, Disgusting, ugly hack, but it means one less private hook */
1171 nt_status
= kdc_hdb_ldb_create(kdc_mem_ctx
, kdc_lp_ctx
,
1174 if (NT_STATUS_IS_OK(nt_status
)) {