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,
178 ret = _krb5_get_ad(context, auth_context->authenticator->authorization_data, NULL, KRB5_AUTHDATA_GSS_API_ETYPE_NEGOTIATION, &data);
182 ret = decode_EtypeList(data.data, data.length, etypes, NULL);
183 krb5_data_free(&data);
185 krb5_clear_error_message(context);
190 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
191 krb5_decrypt_ticket(krb5_context context,
199 ret = decrypt_tkt_enc_part (context, key, &ticket->enc_part, &t);
205 time_t start = t.authtime;
207 krb5_timeofday (context, &now);
209 start = *t.starttime;
210 if(start - now > context->max_skew
212 && !(flags & KRB5_VERIFY_AP_REQ_IGNORE_INVALID))) {
213 free_EncTicketPart(&t);
214 krb5_clear_error_message (context);
215 return KRB5KRB_AP_ERR_TKT_NYV;
217 if(now - t.endtime > context->max_skew) {
218 free_EncTicketPart(&t);
219 krb5_clear_error_message (context);
220 return KRB5KRB_AP_ERR_TKT_EXPIRED;
223 if(!t.flags.transited_policy_checked) {
224 ret = check_transited(context, ticket, &t);
226 free_EncTicketPart(&t);
235 free_EncTicketPart(&t);
239 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
240 krb5_verify_authenticator_checksum(krb5_context context,
241 krb5_auth_context ac,
246 krb5_keyblock *key = NULL;
247 krb5_authenticator authenticator;
250 ret = krb5_auth_con_getauthenticator(context, ac, &authenticator);
253 if (authenticator->cksum == NULL) {
257 ret = krb5_auth_con_getkey(context, ac, &key);
260 ret = krb5_crypto_init(context, key, 0, &crypto);
264 _krb5_crypto_set_flags(context, crypto, KRB5_CRYPTO_FLAG_ALLOW_UNKEYED_CHECKSUM);
265 ret = krb5_verify_checksum(context, crypto,
266 KRB5_KU_AP_REQ_AUTH_CKSUM,
267 data, len, authenticator->cksum);
268 krb5_crypto_destroy(context, crypto);
270 krb5_free_authenticator(context, &authenticator);
271 krb5_free_keyblock(context, key);
276 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
277 krb5_verify_ap_req(krb5_context context,
278 krb5_auth_context *auth_context,
280 krb5_const_principal server,
281 krb5_keyblock *keyblock,
283 krb5_flags *ap_req_options,
284 krb5_ticket **ticket)
286 return krb5_verify_ap_req2 (context,
294 KRB5_KU_AP_REQ_AUTH);
297 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
298 krb5_verify_ap_req2(krb5_context context,
299 krb5_auth_context *auth_context,
301 krb5_const_principal server,
302 krb5_keyblock *keyblock,
304 krb5_flags *ap_req_options,
305 krb5_ticket **ticket,
306 krb5_key_usage usage)
309 krb5_auth_context ac;
314 memset(&etypes, 0, sizeof(etypes));
319 if (auth_context && *auth_context) {
322 ret = krb5_auth_con_init (context, &ac);
327 t = calloc(1, sizeof(*t));
329 ret = krb5_enomem(context);
333 if (ap_req->ap_options.use_session_key && ac->keyblock){
334 ret = krb5_decrypt_ticket(context, &ap_req->ticket,
338 krb5_free_keyblock(context, ac->keyblock);
341 ret = krb5_decrypt_ticket(context, &ap_req->ticket,
349 ret = _krb5_principalname2krb5_principal(context,
351 ap_req->ticket.sname,
352 ap_req->ticket.realm);
355 ret = decrypt_authenticator (context,
357 &ap_req->authenticator,
364 krb5_principal p1, p2;
367 _krb5_principalname2krb5_principal(context,
369 ac->authenticator->cname,
370 ac->authenticator->crealm);
371 _krb5_principalname2krb5_principal(context,
375 res = krb5_principal_compare (context, p1, p2);
376 krb5_free_principal (context, p1);
377 krb5_free_principal (context, p2);
379 ret = KRB5KRB_AP_ERR_BADMATCH;
380 krb5_clear_error_message (context);
386 * The ticket authenticates the client, and conveys naming attributes that
387 * we want to expose in GSS using RFC6680 APIs.
389 * So we same the ticket enc-part in the client's krb5_principal object
390 * (note though that the session key will be absent in that copy of the
393 ret = _krb5_ticket2krb5_principal(context, &t->client, &t->ticket,
394 ac->authenticator->authorization_data);
397 t->client->nameattrs->peer_realm =
398 calloc(1, sizeof(t->client->nameattrs->peer_realm[0]));
399 if (t->client->nameattrs->peer_realm == NULL) {
400 ret = krb5_enomem(context);
403 ret = copy_Realm(&ap_req->ticket.realm, t->client->nameattrs->peer_realm);
406 /* check addresses */
409 && ac->remote_address
410 && !krb5_address_search (context,
414 * Hack alert. If KRB5_VERIFY_AP_REQ_IGNORE_ADDRS and the client's
415 * address didn't check out then we'll return KRB5KRB_AP_ERR_BADADDR
416 * even on success, and we'll let the caller figure it out because
417 * `*ticket != NULL' or `*auth_context != NULL'.
419 if ((flags & KRB5_VERIFY_AP_REQ_IGNORE_ADDRS)) {
422 ret = KRB5KRB_AP_ERR_BADADDR;
423 krb5_clear_error_message(context);
428 /* check timestamp in authenticator */
432 krb5_timeofday (context, &now);
434 if (krb5_time_abs(ac->authenticator->ctime, now) > context->max_skew) {
435 ret = KRB5KRB_AP_ERR_SKEW;
436 krb5_clear_error_message (context);
441 if (ac->authenticator->seq_number)
442 krb5_auth_con_setremoteseqnumber(context, ac,
443 *ac->authenticator->seq_number);
445 /* XXX - Xor sequence numbers */
447 if (ac->authenticator->subkey) {
448 ret = krb5_auth_con_setremotesubkey(context, ac,
449 ac->authenticator->subkey);
454 ret = find_etypelist(context, ac, &etypes);
458 ac->keytype = ETYPE_NULL;
463 for (i = 0; i < etypes.len; i++) {
464 if (krb5_enctype_valid(context, etypes.val[i]) == 0) {
465 ac->keytype = etypes.val[i];
472 ret = krb5_copy_keyblock(context, &t->ticket.key, &ac->keyblock);
475 if (ap_req_options) {
477 if (ac->keytype != ETYPE_NULL)
478 *ap_req_options |= AP_OPTS_USE_SUBKEY;
479 if (ap_req->ap_options.use_session_key)
480 *ap_req_options |= AP_OPTS_USE_SESSION_KEY;
481 if (ap_req->ap_options.mutual_required)
482 *ap_req_options |= AP_OPTS_MUTUAL_REQUIRED;
488 krb5_free_ticket (context, t);
490 if (*auth_context == NULL)
493 krb5_auth_con_free (context, ac);
494 free_EtypeList(&etypes);
497 krb5_clear_error_message(context);
498 return KRB5KRB_AP_ERR_BADADDR;
502 free_EtypeList(&etypes);
504 krb5_free_ticket (context, t);
505 if (auth_context == NULL || *auth_context == NULL)
506 krb5_auth_con_free (context, ac);
514 struct krb5_rd_req_in_ctx_data {
516 krb5_keyblock *keyblock;
517 krb5_boolean check_pac;
518 krb5_flags verify_ap_req_flags;
521 struct krb5_rd_req_out_ctx_data {
522 krb5_keyblock *keyblock;
523 krb5_flags ap_req_options;
525 krb5_principal server;
529 * Allocate a krb5_rd_req_in_ctx as an input parameter to
530 * krb5_rd_req_ctx(). The caller should free the context with
531 * krb5_rd_req_in_ctx_free() when done with the context.
533 * @param context Keberos 5 context.
534 * @param ctx in ctx to krb5_rd_req_ctx().
536 * @return Kerberos 5 error code, see krb5_get_error_message().
541 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
542 krb5_rd_req_in_ctx_alloc(krb5_context context, krb5_rd_req_in_ctx *ctx)
544 *ctx = calloc(1, sizeof(**ctx));
546 return krb5_enomem(context);
547 (*ctx)->check_pac = (context->flags & KRB5_CTX_F_CHECK_PAC) ? 1 : 0;
552 * Set the keytab that krb5_rd_req_ctx() will use.
554 * @param context Keberos 5 context.
555 * @param in in ctx to krb5_rd_req_ctx().
556 * @param keytab keytab that krb5_rd_req_ctx() will use, only copy the
557 * pointer, so the caller must free they keytab after
558 * krb5_rd_req_in_ctx_free() is called.
560 * @return Kerberos 5 error code, see krb5_get_error_message().
565 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
566 krb5_rd_req_in_set_keytab(krb5_context context,
567 krb5_rd_req_in_ctx in,
574 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
575 krb5_rd_req_in_set_verify_ap_req_flags(krb5_context context,
576 krb5_rd_req_in_ctx in,
579 in->verify_ap_req_flags = flags;
584 * Set if krb5_rq_red() is going to check the Windows PAC or not
586 * @param context Keberos 5 context.
587 * @param in krb5_rd_req_in_ctx to check the option on.
588 * @param flag flag to select if to check the pac (TRUE) or not (FALSE).
590 * @return Kerberos 5 error code, see krb5_get_error_message().
595 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
596 krb5_rd_req_in_set_pac_check(krb5_context context,
597 krb5_rd_req_in_ctx in,
600 in->check_pac = flag;
605 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
606 krb5_rd_req_in_set_keyblock(krb5_context context,
607 krb5_rd_req_in_ctx in,
608 krb5_keyblock *keyblock)
610 in->keyblock = keyblock; /* XXX should make copy */
614 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
615 krb5_rd_req_out_get_ap_req_options(krb5_context context,
616 krb5_rd_req_out_ctx out,
617 krb5_flags *ap_req_options)
619 *ap_req_options = out->ap_req_options;
623 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
624 krb5_rd_req_out_get_ticket(krb5_context context,
625 krb5_rd_req_out_ctx out,
626 krb5_ticket **ticket)
628 return krb5_copy_ticket(context, out->ticket, ticket);
631 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
632 krb5_rd_req_out_get_keyblock(krb5_context context,
633 krb5_rd_req_out_ctx out,
634 krb5_keyblock **keyblock)
636 return krb5_copy_keyblock(context, out->keyblock, keyblock);
640 * Get the principal that was used in the request from the
641 * client. Might not match whats in the ticket if krb5_rd_req_ctx()
642 * searched in the keytab for a matching key.
644 * @param context a Kerberos 5 context.
645 * @param out a krb5_rd_req_out_ctx from krb5_rd_req_ctx().
646 * @param principal return principal, free with krb5_free_principal().
651 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
652 krb5_rd_req_out_get_server(krb5_context context,
653 krb5_rd_req_out_ctx out,
654 krb5_principal *principal)
656 return krb5_copy_principal(context, out->server, principal);
659 KRB5_LIB_FUNCTION void KRB5_LIB_CALL
660 krb5_rd_req_in_ctx_free(krb5_context context, krb5_rd_req_in_ctx ctx)
666 * Free the krb5_rd_req_out_ctx.
668 * @param context Keberos 5 context.
669 * @param ctx krb5_rd_req_out_ctx context to free.
674 KRB5_LIB_FUNCTION void KRB5_LIB_CALL
675 krb5_rd_req_out_ctx_free(krb5_context context, krb5_rd_req_out_ctx ctx)
678 krb5_free_ticket(context, ctx->ticket);
680 krb5_free_keyblock(context, ctx->keyblock);
682 krb5_free_principal(context, ctx->server);
687 * Process an AP_REQ message.
689 * @param context Kerberos 5 context.
690 * @param auth_context authentication context of the peer.
691 * @param inbuf the AP_REQ message, obtained for example with krb5_read_message().
692 * @param server server principal.
693 * @param keytab server keytab.
694 * @param ap_req_options set to the AP_REQ options. See the AP_OPTS_* defines.
695 * @param ticket on success, set to the authenticated client credentials.
696 * Must be deallocated with krb5_free_ticket(). If not
697 * interested, pass a NULL value.
699 * @return 0 to indicate success. Otherwise a Kerberos error code is
700 * returned, see krb5_get_error_message().
702 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
703 krb5_rd_req(krb5_context context,
704 krb5_auth_context *auth_context,
705 const krb5_data *inbuf,
706 krb5_const_principal server,
708 krb5_flags *ap_req_options,
709 krb5_ticket **ticket)
712 krb5_rd_req_in_ctx in;
713 krb5_rd_req_out_ctx out;
715 ret = krb5_rd_req_in_ctx_alloc(context, &in);
719 ret = krb5_rd_req_in_set_keytab(context, in, keytab);
721 krb5_rd_req_in_ctx_free(context, in);
725 ret = krb5_rd_req_ctx(context, auth_context, inbuf, server, in, &out);
726 krb5_rd_req_in_ctx_free(context, in);
731 *ap_req_options = out->ap_req_options;
733 ret = krb5_copy_ticket(context, out->ticket, ticket);
739 krb5_rd_req_out_ctx_free(context, out);
747 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
748 krb5_rd_req_with_keyblock(krb5_context context,
749 krb5_auth_context *auth_context,
750 const krb5_data *inbuf,
751 krb5_const_principal server,
752 krb5_keyblock *keyblock,
753 krb5_flags *ap_req_options,
754 krb5_ticket **ticket)
757 krb5_rd_req_in_ctx in;
758 krb5_rd_req_out_ctx out;
760 ret = krb5_rd_req_in_ctx_alloc(context, &in);
764 ret = krb5_rd_req_in_set_keyblock(context, in, keyblock);
766 krb5_rd_req_in_ctx_free(context, in);
770 ret = krb5_rd_req_ctx(context, auth_context, inbuf, server, in, &out);
771 krb5_rd_req_in_ctx_free(context, in);
776 *ap_req_options = out->ap_req_options;
778 ret = krb5_copy_ticket(context, out->ticket, ticket);
784 krb5_rd_req_out_ctx_free(context, out);
792 static krb5_error_code
793 get_key_from_keytab(krb5_context context,
795 krb5_const_principal server,
797 krb5_keyblock **out_key)
799 krb5_keytab_entry entry;
802 krb5_keytab real_keytab;
805 krb5_kt_default(context, &real_keytab);
807 real_keytab = keytab;
809 if (ap_req->ticket.enc_part.kvno)
810 kvno = *ap_req->ticket.enc_part.kvno;
814 ret = krb5_kt_get_entry (context,
818 ap_req->ticket.enc_part.etype,
821 ret = krb5_copy_keyblock(context, &entry.keyblock, out_key);
822 krb5_kt_free_entry(context, &entry);
825 krb5_kt_close(context, real_keytab);
831 * The core server function that verify application authentication
832 * requests from clients.
834 * @param context Keberos 5 context.
835 * @param auth_context the authentication context, can be NULL, then
836 * default values for the authentication context will used.
837 * @param inbuf the (AP-REQ) authentication buffer
839 * @param server the server to authenticate to. If NULL the function
840 * will try to find any available credential in the keytab
841 * that will verify the reply. The function will prefer the
842 * server specified in the AP-REQ, but if
843 * there is no mach, it will try all keytab entries for a
844 * match. This has serious performance issues for large keytabs.
846 * @param inctx control the behavior of the function, if NULL, the
847 * default behavior is used.
848 * @param outctx the return outctx, free with krb5_rd_req_out_ctx_free().
849 * @return Kerberos 5 error code, see krb5_get_error_message().
854 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
855 krb5_rd_req_ctx(krb5_context context,
856 krb5_auth_context *auth_context,
857 const krb5_data *inbuf,
858 krb5_const_principal server,
859 krb5_rd_req_in_ctx inctx,
860 krb5_rd_req_out_ctx *outctx)
864 krb5_rd_req_out_ctx o = NULL;
865 krb5_keytab id = NULL, keytab = NULL;
866 krb5_principal service = NULL;
867 krb5_flags verify_ap_req_flags = 0;
872 o = calloc(1, sizeof(*o));
874 return krb5_enomem(context);
876 if (*auth_context == NULL) {
877 ret = krb5_auth_con_init(context, auth_context);
882 ret = krb5_decode_ap_req(context, inbuf, &ap_req);
886 /* Save the principal that was in the request */
887 ret = _krb5_principalname2krb5_principal(context,
890 ap_req.ticket.realm);
894 if (ap_req.ap_options.use_session_key &&
895 (*auth_context)->keyblock == NULL) {
896 ret = KRB5KRB_AP_ERR_NOKEY;
897 krb5_set_error_message(context, ret,
898 N_("krb5_rd_req: user to user auth "
899 "without session key given", ""));
903 if (inctx && inctx->keytab)
907 verify_ap_req_flags = inctx->verify_ap_req_flags;
909 if((*auth_context)->keyblock){
910 ret = krb5_copy_keyblock(context,
911 (*auth_context)->keyblock,
915 } else if(inctx && inctx->keyblock){
916 ret = krb5_copy_keyblock(context,
924 krb5_kt_default(context, &keytab);
930 if (server == NULL) {
931 ret = _krb5_principalname2krb5_principal(context,
934 ap_req.ticket.realm);
940 ret = get_key_from_keytab(context,
946 /* If caller specified a server, fail. */
947 if (service == NULL && (context->flags & KRB5_CTX_F_RD_REQ_IGNORE) == 0)
949 /* Otherwise, fall back to iterating over the keytab. This
950 * have serious performace issues for larger keytab.
958 * We got an exact keymatch, use that.
961 ret = krb5_verify_ap_req2(context,
969 KRB5_KU_AP_REQ_AUTH);
976 * Interate over keytab to find a key that can decrypt the request.
979 krb5_keytab_entry entry;
980 krb5_kt_cursor cursor;
981 int done = 0, kvno = 0;
983 memset(&cursor, 0, sizeof(cursor));
985 if (ap_req.ticket.enc_part.kvno)
986 kvno = *ap_req.ticket.enc_part.kvno;
988 ret = krb5_kt_start_seq_get(context, id, &cursor);
996 ret = krb5_kt_next_entry(context, id, &entry, &cursor);
998 _krb5_kt_principal_not_found(context, ret, id, o->server,
999 ap_req.ticket.enc_part.etype,
1004 if (entry.keyblock.keytype != ap_req.ticket.enc_part.etype) {
1005 krb5_kt_free_entry (context, &entry);
1009 ret = krb5_verify_ap_req2(context,
1014 verify_ap_req_flags,
1017 KRB5_KU_AP_REQ_AUTH);
1019 krb5_kt_free_entry (context, &entry);
1024 * Found a match, save the keyblock for PAC processing,
1025 * and update the service principal in the ticket to match
1026 * whatever is in the keytab.
1029 ret = krb5_copy_keyblock(context,
1033 krb5_kt_free_entry (context, &entry);
1037 ret = krb5_copy_principal(context, entry.principal, &p);
1039 krb5_kt_free_entry (context, &entry);
1042 krb5_free_principal(context, o->ticket->server);
1043 o->ticket->server = p;
1045 krb5_kt_free_entry (context, &entry);
1049 krb5_kt_end_seq_get (context, id, &cursor);
1054 ret = krb5_ticket_get_authorization_data_type(context, o->ticket,
1055 KRB5_AUTHDATA_KDC_ISSUED,
1058 o->ticket->client->nameattrs->kdc_issued_verified = 1;
1060 /* If there is a PAC, verify its server signature */
1061 if (inctx == NULL || inctx->check_pac) {
1065 ret = krb5_ticket_get_authorization_data_type(context,
1067 KRB5_AUTHDATA_WIN2K_PAC,
1070 ret = krb5_pac_parse(context, data.data, data.length, &pac);
1071 krb5_data_free(&data);
1075 ret = krb5_pac_verify(context,
1077 o->ticket->ticket.authtime,
1082 o->ticket->client->nameattrs->pac_verified = 1;
1083 if (ret == 0 && (context->flags & KRB5_CTX_F_REPORT_CANONICAL_CLIENT_NAME)) {
1084 krb5_error_code ret2;
1085 krb5_principal canon_name;
1087 ret2 = _krb5_pac_get_canon_principal(context, pac, &canon_name);
1089 free_Realm(&o->ticket->client->realm);
1090 free_PrincipalName(&o->ticket->client->name);
1091 ret = copy_Realm(&canon_name->realm, &o->ticket->client->realm);
1093 ret = copy_PrincipalName(&canon_name->name, &o->ticket->client->name);
1094 krb5_free_principal(context, canon_name);
1095 } else if (ret2 != ENOENT)
1099 krb5_pac_free(context, pac);
1102 o->ticket->client->nameattrs->pac = pac;
1108 if (ret || outctx == NULL)
1109 krb5_rd_req_out_ctx_free(context, o);
1113 free_AP_REQ(&ap_req);
1116 krb5_free_principal(context, service);
1119 krb5_kt_close(context, keytab);