3 * Copyright (c) 1997 - 2007 Kungliga Tekniska Högskolan
4 * (Royal Institute of Technology, Stockholm, Sweden).
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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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
35 #include "krb5_locl.h"
37 static krb5_error_code
38 decrypt_tkt_enc_part (krb5_context context
,
40 EncryptedData
*enc_part
,
41 EncTicketPart
*decr_part
)
48 ret
= krb5_crypto_init(context
, key
, 0, &crypto
);
51 ret
= krb5_decrypt_EncryptedData (context
,
56 krb5_crypto_destroy(context
, crypto
);
60 ret
= decode_EncTicketPart(plain
.data
, plain
.length
, decr_part
, &len
);
62 krb5_set_error_message(context
, ret
,
63 N_("Failed to decode encrypted "
65 krb5_data_free (&plain
);
69 static krb5_error_code
70 decrypt_authenticator (krb5_context context
,
72 EncryptedData
*enc_part
,
73 Authenticator
*authenticator
,
81 ret
= krb5_crypto_init(context
, key
, 0, &crypto
);
84 ret
= krb5_decrypt_EncryptedData (context
,
86 usage
/* KRB5_KU_AP_REQ_AUTH */,
89 /* for backwards compatibility, also try the old usage */
90 if (ret
&& usage
== KRB5_KU_TGS_REQ_AUTH
)
91 ret
= krb5_decrypt_EncryptedData (context
,
96 krb5_crypto_destroy(context
, crypto
);
100 ret
= decode_Authenticator(plain
.data
, plain
.length
,
101 authenticator
, &len
);
102 krb5_data_free (&plain
);
106 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
107 krb5_decode_ap_req(krb5_context context
,
108 const krb5_data
*inbuf
,
113 ret
= decode_AP_REQ(inbuf
->data
, inbuf
->length
, ap_req
, &len
);
116 if (ap_req
->pvno
!= 5){
118 krb5_clear_error_message (context
);
119 return KRB5KRB_AP_ERR_BADVERSION
;
121 if (ap_req
->msg_type
!= krb_ap_req
){
123 krb5_clear_error_message (context
);
124 return KRB5KRB_AP_ERR_MSG_TYPE
;
126 if (ap_req
->ticket
.tkt_vno
!= 5){
128 krb5_clear_error_message (context
);
129 return KRB5KRB_AP_ERR_BADVERSION
;
134 static krb5_error_code
135 check_transited(krb5_context context
, Ticket
*ticket
, EncTicketPart
*enc
)
138 unsigned int num_realms
, n
;
142 * Windows 2000 and 2003 uses this inside their TGT so it's normaly
143 * not seen by others, however, samba4 joined with a Windows AD as
144 * a Domain Controller gets exposed to this.
146 if(enc
->transited
.tr_type
== 0 && enc
->transited
.contents
.length
== 0)
149 if(enc
->transited
.tr_type
!= DOMAIN_X500_COMPRESS
)
150 return KRB5KDC_ERR_TRTYPE_NOSUPP
;
152 if(enc
->transited
.contents
.length
== 0)
155 ret
= krb5_domain_x500_decode(context
, enc
->transited
.contents
,
156 &realms
, &num_realms
,
161 ret
= krb5_check_transited(context
, enc
->crealm
,
163 realms
, num_realms
, NULL
);
164 for (n
= 0; n
< num_realms
; n
++)
170 static krb5_error_code
171 find_etypelist(krb5_context context
,
172 krb5_auth_context auth_context
,
177 krb5_authdata adIfRelevant
;
180 adIfRelevant
.len
= 0;
185 ad
= auth_context
->authenticator
->authorization_data
;
189 for (i
= 0; i
< ad
->len
; i
++) {
190 if (ad
->val
[i
].ad_type
== KRB5_AUTHDATA_IF_RELEVANT
) {
191 ret
= decode_AD_IF_RELEVANT(ad
->val
[i
].ad_data
.data
,
192 ad
->val
[i
].ad_data
.length
,
198 if (adIfRelevant
.len
== 1 &&
199 adIfRelevant
.val
[0].ad_type
==
200 KRB5_AUTHDATA_GSS_API_ETYPE_NEGOTIATION
) {
203 free_AD_IF_RELEVANT(&adIfRelevant
);
204 adIfRelevant
.len
= 0;
208 if (adIfRelevant
.len
== 0)
211 ret
= decode_EtypeList(adIfRelevant
.val
[0].ad_data
.data
,
212 adIfRelevant
.val
[0].ad_data
.length
,
216 krb5_clear_error_message(context
);
218 free_AD_IF_RELEVANT(&adIfRelevant
);
223 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
224 krb5_decrypt_ticket(krb5_context context
,
232 ret
= decrypt_tkt_enc_part (context
, key
, &ticket
->enc_part
, &t
);
238 time_t start
= t
.authtime
;
240 krb5_timeofday (context
, &now
);
242 start
= *t
.starttime
;
243 if(start
- now
> context
->max_skew
245 && !(flags
& KRB5_VERIFY_AP_REQ_IGNORE_INVALID
))) {
246 free_EncTicketPart(&t
);
247 krb5_clear_error_message (context
);
248 return KRB5KRB_AP_ERR_TKT_NYV
;
250 if(now
- t
.endtime
> context
->max_skew
) {
251 free_EncTicketPart(&t
);
252 krb5_clear_error_message (context
);
253 return KRB5KRB_AP_ERR_TKT_EXPIRED
;
256 if(!t
.flags
.transited_policy_checked
) {
257 ret
= check_transited(context
, ticket
, &t
);
259 free_EncTicketPart(&t
);
268 free_EncTicketPart(&t
);
272 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
273 krb5_verify_authenticator_checksum(krb5_context context
,
274 krb5_auth_context ac
,
280 krb5_authenticator authenticator
;
283 ret
= krb5_auth_con_getauthenticator (context
,
288 if(authenticator
->cksum
== NULL
) {
289 krb5_free_authenticator(context
, &authenticator
);
292 ret
= krb5_auth_con_getkey(context
, ac
, &key
);
294 krb5_free_authenticator(context
, &authenticator
);
297 ret
= krb5_crypto_init(context
, key
, 0, &crypto
);
300 ret
= krb5_verify_checksum (context
,
302 KRB5_KU_AP_REQ_AUTH_CKSUM
,
305 authenticator
->cksum
);
306 krb5_crypto_destroy(context
, crypto
);
308 krb5_free_authenticator(context
, &authenticator
);
309 krb5_free_keyblock(context
, key
);
314 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
315 krb5_verify_ap_req(krb5_context context
,
316 krb5_auth_context
*auth_context
,
318 krb5_const_principal server
,
319 krb5_keyblock
*keyblock
,
321 krb5_flags
*ap_req_options
,
322 krb5_ticket
**ticket
)
324 return krb5_verify_ap_req2 (context
,
332 KRB5_KU_AP_REQ_AUTH
);
335 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
336 krb5_verify_ap_req2(krb5_context context
,
337 krb5_auth_context
*auth_context
,
339 krb5_const_principal server
,
340 krb5_keyblock
*keyblock
,
342 krb5_flags
*ap_req_options
,
343 krb5_ticket
**ticket
,
344 krb5_key_usage usage
)
347 krb5_auth_context ac
;
354 if (auth_context
&& *auth_context
) {
357 ret
= krb5_auth_con_init (context
, &ac
);
362 t
= calloc(1, sizeof(*t
));
365 krb5_clear_error_message (context
);
369 if (ap_req
->ap_options
.use_session_key
&& ac
->keyblock
){
370 ret
= krb5_decrypt_ticket(context
, &ap_req
->ticket
,
374 krb5_free_keyblock(context
, ac
->keyblock
);
377 ret
= krb5_decrypt_ticket(context
, &ap_req
->ticket
,
385 ret
= _krb5_principalname2krb5_principal(context
,
387 ap_req
->ticket
.sname
,
388 ap_req
->ticket
.realm
);
390 ret
= _krb5_principalname2krb5_principal(context
,
396 ret
= decrypt_authenticator (context
,
398 &ap_req
->authenticator
,
405 krb5_principal p1
, p2
;
408 _krb5_principalname2krb5_principal(context
,
410 ac
->authenticator
->cname
,
411 ac
->authenticator
->crealm
);
412 _krb5_principalname2krb5_principal(context
,
416 res
= krb5_principal_compare (context
, p1
, p2
);
417 krb5_free_principal (context
, p1
);
418 krb5_free_principal (context
, p2
);
420 ret
= KRB5KRB_AP_ERR_BADMATCH
;
421 krb5_clear_error_message (context
);
426 /* check addresses */
429 && ac
->remote_address
430 && !krb5_address_search (context
,
433 ret
= KRB5KRB_AP_ERR_BADADDR
;
434 krb5_clear_error_message (context
);
438 /* check timestamp in authenticator */
442 krb5_timeofday (context
, &now
);
444 if (abs(ac
->authenticator
->ctime
- now
) > context
->max_skew
) {
445 ret
= KRB5KRB_AP_ERR_SKEW
;
446 krb5_clear_error_message (context
);
451 if (ac
->authenticator
->seq_number
)
452 krb5_auth_con_setremoteseqnumber(context
, ac
,
453 *ac
->authenticator
->seq_number
);
455 /* XXX - Xor sequence numbers */
457 if (ac
->authenticator
->subkey
) {
458 ret
= krb5_auth_con_setremotesubkey(context
, ac
,
459 ac
->authenticator
->subkey
);
464 ret
= find_etypelist(context
, ac
, &etypes
);
468 ac
->keytype
= ETYPE_NULL
;
473 for (i
= 0; i
< etypes
.len
; i
++) {
474 if (krb5_enctype_valid(context
, etypes
.val
[i
]) == 0) {
475 ac
->keytype
= etypes
.val
[i
];
482 ret
= krb5_copy_keyblock(context
, &t
->ticket
.key
, &ac
->keyblock
);
485 if (ap_req_options
) {
487 if (ac
->keytype
!= ETYPE_NULL
)
488 *ap_req_options
|= AP_OPTS_USE_SUBKEY
;
489 if (ap_req
->ap_options
.use_session_key
)
490 *ap_req_options
|= AP_OPTS_USE_SESSION_KEY
;
491 if (ap_req
->ap_options
.mutual_required
)
492 *ap_req_options
|= AP_OPTS_MUTUAL_REQUIRED
;
498 krb5_free_ticket (context
, t
);
500 if (*auth_context
== NULL
)
503 krb5_auth_con_free (context
, ac
);
504 free_EtypeList(&etypes
);
508 krb5_free_ticket (context
, t
);
509 if (auth_context
== NULL
|| *auth_context
== NULL
)
510 krb5_auth_con_free (context
, ac
);
518 struct krb5_rd_req_in_ctx_data
{
520 krb5_keyblock
*keyblock
;
521 krb5_boolean check_pac
;
524 struct krb5_rd_req_out_ctx_data
{
525 krb5_keyblock
*keyblock
;
526 krb5_flags ap_req_options
;
528 krb5_principal server
;
532 * Allocate a krb5_rd_req_in_ctx as an input parameter to
533 * krb5_rd_req_ctx(). The caller should free the context with
534 * krb5_rd_req_in_ctx_free() when done with the context.
536 * @param context Keberos 5 context.
537 * @param ctx in ctx to krb5_rd_req_ctx().
539 * @return Kerberos 5 error code, see krb5_get_error_message().
544 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
545 krb5_rd_req_in_ctx_alloc(krb5_context context
, krb5_rd_req_in_ctx
*ctx
)
547 *ctx
= calloc(1, sizeof(**ctx
));
549 krb5_set_error_message(context
, ENOMEM
,
550 N_("malloc: out of memory", ""));
553 (*ctx
)->check_pac
= (context
->flags
& KRB5_CTX_F_CHECK_PAC
) ? 1 : 0;
558 * Set the keytab that krb5_rd_req_ctx() will use.
560 * @param context Keberos 5 context.
561 * @param in in ctx to krb5_rd_req_ctx().
562 * @param keytab keytab that krb5_rd_req_ctx() will use, only copy the
563 * pointer, so the caller must free they keytab after
564 * krb5_rd_req_in_ctx_free() is called.
566 * @return Kerberos 5 error code, see krb5_get_error_message().
571 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
572 krb5_rd_req_in_set_keytab(krb5_context context
,
573 krb5_rd_req_in_ctx in
,
581 * Set if krb5_rq_red() is going to check the Windows PAC or not
583 * @param context Keberos 5 context.
584 * @param in krb5_rd_req_in_ctx to check the option on.
585 * @param flag flag to select if to check the pac (TRUE) or not (FALSE).
587 * @return Kerberos 5 error code, see krb5_get_error_message().
592 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
593 krb5_rd_req_in_set_pac_check(krb5_context context
,
594 krb5_rd_req_in_ctx in
,
597 in
->check_pac
= flag
;
602 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
603 krb5_rd_req_in_set_keyblock(krb5_context context
,
604 krb5_rd_req_in_ctx in
,
605 krb5_keyblock
*keyblock
)
607 in
->keyblock
= keyblock
; /* XXX should make copy */
611 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
612 krb5_rd_req_out_get_ap_req_options(krb5_context context
,
613 krb5_rd_req_out_ctx out
,
614 krb5_flags
*ap_req_options
)
616 *ap_req_options
= out
->ap_req_options
;
620 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
621 krb5_rd_req_out_get_ticket(krb5_context context
,
622 krb5_rd_req_out_ctx out
,
623 krb5_ticket
**ticket
)
625 return krb5_copy_ticket(context
, out
->ticket
, ticket
);
628 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
629 krb5_rd_req_out_get_keyblock(krb5_context context
,
630 krb5_rd_req_out_ctx out
,
631 krb5_keyblock
**keyblock
)
633 return krb5_copy_keyblock(context
, out
->keyblock
, keyblock
);
637 * Get the principal that was used in the request from the
638 * client. Might not match whats in the ticket if krb5_rd_req_ctx()
639 * searched in the keytab for a matching key.
641 * @param context a Kerberos 5 context.
642 * @param out a krb5_rd_req_out_ctx from krb5_rd_req_ctx().
643 * @param principal return principal, free with krb5_free_principal().
648 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
649 krb5_rd_req_out_get_server(krb5_context context
,
650 krb5_rd_req_out_ctx out
,
651 krb5_principal
*principal
)
653 return krb5_copy_principal(context
, out
->server
, principal
);
656 KRB5_LIB_FUNCTION
void KRB5_LIB_CALL
657 krb5_rd_req_in_ctx_free(krb5_context context
, krb5_rd_req_in_ctx ctx
)
663 * Free the krb5_rd_req_out_ctx.
665 * @param context Keberos 5 context.
666 * @param ctx krb5_rd_req_out_ctx context to free.
671 KRB5_LIB_FUNCTION
void KRB5_LIB_CALL
672 krb5_rd_req_out_ctx_free(krb5_context context
, krb5_rd_req_out_ctx ctx
)
675 krb5_free_ticket(context
, ctx
->ticket
);
677 krb5_free_keyblock(context
, ctx
->keyblock
);
679 krb5_free_principal(context
, ctx
->server
);
687 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
688 krb5_rd_req(krb5_context context
,
689 krb5_auth_context
*auth_context
,
690 const krb5_data
*inbuf
,
691 krb5_const_principal server
,
693 krb5_flags
*ap_req_options
,
694 krb5_ticket
**ticket
)
697 krb5_rd_req_in_ctx in
;
698 krb5_rd_req_out_ctx out
;
700 ret
= krb5_rd_req_in_ctx_alloc(context
, &in
);
704 ret
= krb5_rd_req_in_set_keytab(context
, in
, keytab
);
706 krb5_rd_req_in_ctx_free(context
, in
);
710 ret
= krb5_rd_req_ctx(context
, auth_context
, inbuf
, server
, in
, &out
);
711 krb5_rd_req_in_ctx_free(context
, in
);
716 *ap_req_options
= out
->ap_req_options
;
718 ret
= krb5_copy_ticket(context
, out
->ticket
, ticket
);
724 krb5_rd_req_out_ctx_free(context
, out
);
732 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
733 krb5_rd_req_with_keyblock(krb5_context context
,
734 krb5_auth_context
*auth_context
,
735 const krb5_data
*inbuf
,
736 krb5_const_principal server
,
737 krb5_keyblock
*keyblock
,
738 krb5_flags
*ap_req_options
,
739 krb5_ticket
**ticket
)
742 krb5_rd_req_in_ctx in
;
743 krb5_rd_req_out_ctx out
;
745 ret
= krb5_rd_req_in_ctx_alloc(context
, &in
);
749 ret
= krb5_rd_req_in_set_keyblock(context
, in
, keyblock
);
751 krb5_rd_req_in_ctx_free(context
, in
);
755 ret
= krb5_rd_req_ctx(context
, auth_context
, inbuf
, server
, in
, &out
);
756 krb5_rd_req_in_ctx_free(context
, in
);
761 *ap_req_options
= out
->ap_req_options
;
763 ret
= krb5_copy_ticket(context
, out
->ticket
, ticket
);
769 krb5_rd_req_out_ctx_free(context
, out
);
777 static krb5_error_code
778 get_key_from_keytab(krb5_context context
,
780 krb5_const_principal server
,
782 krb5_keyblock
**out_key
)
784 krb5_keytab_entry entry
;
787 krb5_keytab real_keytab
;
790 krb5_kt_default(context
, &real_keytab
);
792 real_keytab
= keytab
;
794 if (ap_req
->ticket
.enc_part
.kvno
)
795 kvno
= *ap_req
->ticket
.enc_part
.kvno
;
799 ret
= krb5_kt_get_entry (context
,
803 ap_req
->ticket
.enc_part
.etype
,
807 ret
= krb5_copy_keyblock(context
, &entry
.keyblock
, out_key
);
808 krb5_kt_free_entry (context
, &entry
);
811 krb5_kt_close(context
, real_keytab
);
817 * The core server function that verify application authentication
818 * requests from clients.
820 * @param context Keberos 5 context.
821 * @param auth_context the authentication context, can be NULL, then
822 * default values for the authentication context will used.
823 * @param inbuf the (AP-REQ) authentication buffer
825 * @param server the server with authenticate as, if NULL the function
826 * will try to find any available credential in the keytab
827 * that will verify the reply. The function will prefer the
828 * server the server client specified in the AP-REQ, but if
829 * there is no mach, it will try all keytab entries for a
830 * match. This have serious performance issues for larger keytabs.
832 * @param inctx control the behavior of the function, if NULL, the
833 * default behavior is used.
834 * @param outctx the return outctx, free with krb5_rd_req_out_ctx_free().
835 * @return Kerberos 5 error code, see krb5_get_error_message().
840 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
841 krb5_rd_req_ctx(krb5_context context
,
842 krb5_auth_context
*auth_context
,
843 const krb5_data
*inbuf
,
844 krb5_const_principal server
,
845 krb5_rd_req_in_ctx inctx
,
846 krb5_rd_req_out_ctx
*outctx
)
850 krb5_rd_req_out_ctx o
= NULL
;
851 krb5_keytab id
= NULL
, keytab
= NULL
;
852 krb5_principal service
= NULL
;
856 o
= calloc(1, sizeof(*o
));
858 krb5_set_error_message(context
, ENOMEM
,
859 N_("malloc: out of memory", ""));
863 if (*auth_context
== NULL
) {
864 ret
= krb5_auth_con_init(context
, auth_context
);
869 ret
= krb5_decode_ap_req(context
, inbuf
, &ap_req
);
873 /* Save that principal that was in the request */
874 ret
= _krb5_principalname2krb5_principal(context
,
877 ap_req
.ticket
.realm
);
881 if (ap_req
.ap_options
.use_session_key
&&
882 (*auth_context
)->keyblock
== NULL
) {
883 ret
= KRB5KRB_AP_ERR_NOKEY
;
884 krb5_set_error_message(context
, ret
,
885 N_("krb5_rd_req: user to user auth "
886 "without session key given", ""));
890 if (inctx
&& inctx
->keytab
)
893 if((*auth_context
)->keyblock
){
894 ret
= krb5_copy_keyblock(context
,
895 (*auth_context
)->keyblock
,
899 } else if(inctx
&& inctx
->keyblock
){
900 ret
= krb5_copy_keyblock(context
,
908 krb5_kt_default(context
, &keytab
);
914 if (server
== NULL
) {
915 ret
= _krb5_principalname2krb5_principal(context
,
918 ap_req
.ticket
.realm
);
924 ret
= get_key_from_keytab(context
,
930 /* If caller specified a server, fail. */
931 if (service
== NULL
&& (context
->flags
& KRB5_CTX_F_RD_REQ_IGNORE
) == 0)
933 /* Otherwise, fall back to iterating over the keytab. This
934 * have serious performace issues for larger keytab.
942 * We got an exact keymatch, use that.
945 ret
= krb5_verify_ap_req2(context
,
953 KRB5_KU_AP_REQ_AUTH
);
960 * Interate over keytab to find a key that can decrypt the request.
963 krb5_keytab_entry entry
;
964 krb5_kt_cursor cursor
;
965 int done
= 0, kvno
= 0;
967 memset(&cursor
, 0, sizeof(cursor
));
969 if (ap_req
.ticket
.enc_part
.kvno
)
970 kvno
= *ap_req
.ticket
.enc_part
.kvno
;
972 ret
= krb5_kt_start_seq_get(context
, id
, &cursor
);
980 ret
= krb5_kt_next_entry(context
, id
, &entry
, &cursor
);
982 _krb5_kt_principal_not_found(context
, ret
, id
, o
->server
,
983 ap_req
.ticket
.enc_part
.etype
,
988 if (entry
.keyblock
.keytype
!= ap_req
.ticket
.enc_part
.etype
||
989 (kvno
&& kvno
!= entry
.vno
)) {
990 krb5_kt_free_entry (context
, &entry
);
994 ret
= krb5_verify_ap_req2(context
,
1002 KRB5_KU_AP_REQ_AUTH
);
1004 krb5_kt_free_entry (context
, &entry
);
1009 * Found a match, save the keyblock for PAC processing,
1010 * and update the service principal in the ticket to match
1011 * whatever is in the keytab.
1014 ret
= krb5_copy_keyblock(context
,
1018 krb5_kt_free_entry (context
, &entry
);
1022 ret
= krb5_copy_principal(context
, entry
.principal
, &p
);
1024 krb5_kt_free_entry (context
, &entry
);
1027 krb5_free_principal(context
, o
->ticket
->server
);
1028 o
->ticket
->server
= p
;
1030 krb5_kt_free_entry (context
, &entry
);
1034 krb5_kt_end_seq_get (context
, id
, &cursor
);
1037 /* If there is a PAC, verify its server signature */
1038 if (inctx
== NULL
|| inctx
->check_pac
) {
1042 ret
= krb5_ticket_get_authorization_data_type(context
,
1044 KRB5_AUTHDATA_WIN2K_PAC
,
1047 ret
= krb5_pac_parse(context
, data
.data
, data
.length
, &pac
);
1048 krb5_data_free(&data
);
1052 ret
= krb5_pac_verify(context
,
1054 o
->ticket
->ticket
.authtime
,
1058 krb5_pac_free(context
, pac
);
1066 if (ret
|| outctx
== NULL
) {
1067 krb5_rd_req_out_ctx_free(context
, o
);
1071 free_AP_REQ(&ap_req
);
1074 krb5_free_principal(context
, service
);
1077 krb5_kt_close(context
, keytab
);