2 * Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <krb5_locl.h>
37 * Take the `body' and encode it into `padata' using the credentials
41 static krb5_error_code
42 make_pa_tgs_req(krb5_context context
,
54 ASN1_MALLOC_ENCODE(KDC_REQ_BODY
, buf
, buf_size
, body
, &len
, ret
);
58 krb5_abortx(context
, "internal error in ASN.1 encoder");
62 ret
= _krb5_mk_req_internal(context
, &ac
, 0, &in_data
, creds
,
63 &padata
->padata_value
,
64 KRB5_KU_TGS_REQ_AUTH_CKSUM
,
65 KRB5_KU_TGS_REQ_AUTH
);
70 padata
->padata_type
= KRB5_PADATA_TGS_REQ
;
75 * Set the `enc-authorization-data' in `req_body' based on `authdata'
78 static krb5_error_code
79 set_auth_data (krb5_context context
,
80 KDC_REQ_BODY
*req_body
,
81 krb5_authdata
*authdata
,
90 ASN1_MALLOC_ENCODE(AuthorizationData
, buf
, buf_size
, authdata
,
95 krb5_abortx(context
, "internal error in ASN.1 encoder");
97 ALLOC(req_body
->enc_authorization_data
, 1);
98 if (req_body
->enc_authorization_data
== NULL
) {
100 krb5_set_error_message(context
, ENOMEM
,
101 N_("malloc: out of memory", ""));
104 ret
= krb5_crypto_init(context
, key
, 0, &crypto
);
107 free (req_body
->enc_authorization_data
);
108 req_body
->enc_authorization_data
= NULL
;
111 krb5_encrypt_EncryptedData(context
,
113 KRB5_KU_TGS_REQ_AUTH_DAT_SUBKEY
,
114 /* KRB5_KU_TGS_REQ_AUTH_DAT_SESSION? */
118 req_body
->enc_authorization_data
);
120 krb5_crypto_destroy(context
, crypto
);
122 req_body
->enc_authorization_data
= NULL
;
128 * Create a tgs-req in `t' with `addresses', `flags', `second_ticket'
129 * (if not-NULL), `in_creds', `krbtgt', and returning the generated
130 * subkey in `subkey'.
133 static krb5_error_code
134 init_tgs_req (krb5_context context
,
136 krb5_addresses
*addresses
,
137 krb5_kdc_flags flags
,
138 Ticket
*second_ticket
,
139 krb5_creds
*in_creds
,
142 const METHOD_DATA
*padata
,
143 krb5_keyblock
**subkey
,
146 krb5_error_code ret
= 0;
148 memset(t
, 0, sizeof(*t
));
150 t
->msg_type
= krb_tgs_req
;
151 if (in_creds
->session
.keytype
) {
152 ALLOC_SEQ(&t
->req_body
.etype
, 1);
153 if(t
->req_body
.etype
.val
== NULL
) {
155 krb5_set_error_message(context
, ret
,
156 N_("malloc: out of memory", ""));
159 t
->req_body
.etype
.val
[0] = in_creds
->session
.keytype
;
161 ret
= krb5_init_etype(context
,
162 &t
->req_body
.etype
.len
,
163 &t
->req_body
.etype
.val
,
168 t
->req_body
.addresses
= addresses
;
169 t
->req_body
.kdc_options
= flags
.b
;
170 ret
= copy_Realm(&in_creds
->server
->realm
, &t
->req_body
.realm
);
173 ALLOC(t
->req_body
.sname
, 1);
174 if (t
->req_body
.sname
== NULL
) {
176 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
180 /* some versions of some code might require that the client be
181 present in TGS-REQs, but this is clearly against the spec */
183 ret
= copy_PrincipalName(&in_creds
->server
->name
, t
->req_body
.sname
);
187 /* req_body.till should be NULL if there is no endtime specified,
188 but old MIT code (like DCE secd) doesn't like that */
189 ALLOC(t
->req_body
.till
, 1);
190 if(t
->req_body
.till
== NULL
){
192 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
195 *t
->req_body
.till
= in_creds
->times
.endtime
;
197 t
->req_body
.nonce
= nonce
;
199 ALLOC(t
->req_body
.additional_tickets
, 1);
200 if (t
->req_body
.additional_tickets
== NULL
) {
202 krb5_set_error_message(context
, ret
,
203 N_("malloc: out of memory", ""));
206 ALLOC_SEQ(t
->req_body
.additional_tickets
, 1);
207 if (t
->req_body
.additional_tickets
->val
== NULL
) {
209 krb5_set_error_message(context
, ret
,
210 N_("malloc: out of memory", ""));
213 ret
= copy_Ticket(second_ticket
, t
->req_body
.additional_tickets
->val
);
218 if (t
->padata
== NULL
) {
220 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
223 ALLOC_SEQ(t
->padata
, 1 + padata
->len
);
224 if (t
->padata
->val
== NULL
) {
226 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
231 for (i
= 0; i
< padata
->len
; i
++) {
232 ret
= copy_PA_DATA(&padata
->val
[i
], &t
->padata
->val
[i
+ 1]);
234 krb5_set_error_message(context
, ret
,
235 N_("malloc: out of memory", ""));
242 krb5_auth_context ac
;
243 krb5_keyblock
*key
= NULL
;
245 ret
= krb5_auth_con_init(context
, &ac
);
249 if (krb5_config_get_bool_default(context
, NULL
, FALSE
,
251 krbtgt
->server
->realm
,
252 "tgs_require_subkey",
255 ret
= krb5_generate_subkey (context
, &krbtgt
->session
, &key
);
257 krb5_auth_con_free (context
, ac
);
261 ret
= krb5_auth_con_setlocalsubkey(context
, ac
, key
);
264 krb5_free_keyblock (context
, key
);
265 krb5_auth_con_free (context
, ac
);
270 ret
= set_auth_data (context
, &t
->req_body
, &in_creds
->authdata
,
271 key
? key
: &krbtgt
->session
);
274 krb5_free_keyblock (context
, key
);
275 krb5_auth_con_free (context
, ac
);
279 ret
= make_pa_tgs_req(context
,
286 krb5_free_keyblock (context
, key
);
287 krb5_auth_con_free(context
, ac
);
292 krb5_auth_con_free(context
, ac
);
296 t
->req_body
.addresses
= NULL
;
303 _krb5_get_krbtgt(krb5_context context
,
311 memset(&tmp_cred
, 0, sizeof(tmp_cred
));
313 ret
= krb5_cc_get_principal(context
, id
, &tmp_cred
.client
);
317 ret
= krb5_make_principal(context
,
324 krb5_free_principal(context
, tmp_cred
.client
);
327 ret
= krb5_get_credentials(context
,
332 krb5_free_principal(context
, tmp_cred
.client
);
333 krb5_free_principal(context
, tmp_cred
.server
);
339 /* DCE compatible decrypt proc */
340 static krb5_error_code
341 decrypt_tkt_with_subkey (krb5_context context
,
343 krb5_key_usage usage
,
344 krb5_const_pointer subkey
,
345 krb5_kdc_rep
*dec_rep
)
352 ret
= krb5_crypto_init(context
, key
, 0, &crypto
);
355 ret
= krb5_decrypt_EncryptedData (context
,
358 &dec_rep
->kdc_rep
.enc_part
,
360 krb5_crypto_destroy(context
, crypto
);
362 /* DCE compat -- try to decrypt with subkey */
363 ret
= krb5_crypto_init(context
, subkey
, 0, &crypto
);
366 ret
= krb5_decrypt_EncryptedData (context
,
368 KRB5_KU_TGS_REP_ENC_PART_SUB_KEY
,
369 &dec_rep
->kdc_rep
.enc_part
,
371 krb5_crypto_destroy(context
, crypto
);
376 ret
= decode_EncASRepPart(data
.data
,
381 ret
= decode_EncTGSRepPart(data
.data
,
386 krb5_set_error_message(context
, ret
,
387 N_("Failed to decode encpart in ticket", ""));
388 krb5_data_free (&data
);
392 static krb5_error_code
393 get_cred_kdc(krb5_context context
,
395 krb5_kdc_flags flags
,
396 krb5_addresses
*addresses
,
397 krb5_creds
*in_creds
,
399 krb5_principal impersonate_principal
,
400 Ticket
*second_ticket
,
401 krb5_creds
*out_creds
)
410 krb5_keyblock
*subkey
= NULL
;
412 Ticket second_ticket_data
;
415 krb5_data_zero(&resp
);
416 krb5_data_zero(&enc
);
420 krb5_generate_random_block(&nonce
, sizeof(nonce
));
423 if(flags
.b
.enc_tkt_in_skey
&& second_ticket
== NULL
){
424 ret
= decode_Ticket(in_creds
->second_ticket
.data
,
425 in_creds
->second_ticket
.length
,
426 &second_ticket_data
, &len
);
429 second_ticket
= &second_ticket_data
;
433 if (impersonate_principal
) {
440 self
.name
= impersonate_principal
->name
;
441 self
.realm
= impersonate_principal
->realm
;
442 self
.auth
= estrdup("Kerberos");
444 ret
= _krb5_s4u2self_to_checksumdata(context
, &self
, &data
);
450 ret
= krb5_crypto_init(context
, &krbtgt
->session
, 0, &crypto
);
453 krb5_data_free(&data
);
457 ret
= krb5_create_checksum(context
,
464 krb5_crypto_destroy(context
, crypto
);
465 krb5_data_free(&data
);
471 ASN1_MALLOC_ENCODE(PA_S4U2Self
, buf
, len
, &self
, &size
, ret
);
473 free_Checksum(&self
.cksum
);
477 krb5_abortx(context
, "internal asn1 error");
479 ret
= krb5_padata_add(context
, &padata
, KRB5_PADATA_FOR_USER
, buf
, len
);
484 ret
= init_tgs_req (context
,
498 ASN1_MALLOC_ENCODE(TGS_REQ
, enc
.data
, enc
.length
, &req
, &len
, ret
);
501 if(enc
.length
!= len
)
502 krb5_abortx(context
, "internal error in ASN.1 encoder");
504 /* don't free addresses */
505 req
.req_body
.addresses
= NULL
;
512 krb5_sendto_ctx stctx
;
513 ret
= krb5_sendto_ctx_alloc(context
, &stctx
);
516 krb5_sendto_ctx_set_func(stctx
, _krb5_kdc_retry
, NULL
);
518 ret
= krb5_sendto_context (context
, stctx
, &enc
,
519 krbtgt
->server
->name
.name_string
.val
[1],
521 krb5_sendto_ctx_free(context
, stctx
);
526 memset(&rep
, 0, sizeof(rep
));
527 if(decode_TGS_REP(resp
.data
, resp
.length
, &rep
.kdc_rep
, &len
) == 0) {
530 ret
= krb5_copy_principal(context
,
535 ret
= krb5_copy_principal(context
,
540 /* this should go someplace else */
541 out_creds
->times
.endtime
= in_creds
->times
.endtime
;
543 /* XXX should do better testing */
544 if (flags
.b
.constrained_delegation
|| impersonate_principal
)
545 eflags
|= EXTRACT_TICKET_ALLOW_CNAME_MISMATCH
;
547 ret
= _krb5_extract_ticket(context
,
552 KRB5_KU_TGS_REP_ENC_PART_SESSION
,
556 decrypt_tkt_with_subkey
,
559 krb5_free_kdc_rep(context
, &rep
);
560 } else if(krb5_rd_error(context
, &resp
, &error
) == 0) {
561 ret
= krb5_error_from_rd_error(context
, &error
, in_creds
);
562 krb5_free_error_contents(context
, &error
);
563 } else if(resp
.length
> 0 && ((char*)resp
.data
)[0] == 4) {
564 ret
= KRB5KRB_AP_ERR_V4_REPLY
;
565 krb5_clear_error_message(context
);
567 ret
= KRB5KRB_AP_ERR_MSG_TYPE
;
568 krb5_clear_error_message(context
);
572 if (second_ticket
== &second_ticket_data
)
573 free_Ticket(&second_ticket_data
);
574 free_METHOD_DATA(&padata
);
575 krb5_data_free(&resp
);
576 krb5_data_free(&enc
);
578 krb5_free_keyblock_contents(context
, subkey
);
586 * same as above, just get local addresses first if the krbtgt have
587 * them and the realm is not addressless
590 static krb5_error_code
591 get_cred_kdc_address(krb5_context context
,
593 krb5_kdc_flags flags
,
594 krb5_addresses
*addrs
,
595 krb5_creds
*in_creds
,
597 krb5_principal impersonate_principal
,
598 Ticket
*second_ticket
,
599 krb5_creds
*out_creds
)
602 krb5_addresses addresses
= { 0, NULL
};
605 * Inherit the address-ness of the krbtgt if the address is not
609 if (addrs
== NULL
&& krbtgt
->addresses
.len
!= 0) {
612 krb5_appdefault_boolean(context
, NULL
, krbtgt
->server
->realm
,
613 "no-addresses", FALSE
, &noaddr
);
616 krb5_get_all_client_addrs(context
, &addresses
);
617 /* XXX this sucks. */
619 if(addresses
.len
== 0)
623 ret
= get_cred_kdc(context
, id
, flags
, addrs
, in_creds
,
624 krbtgt
, impersonate_principal
,
625 second_ticket
, out_creds
);
626 krb5_free_addresses(context
, &addresses
);
630 krb5_error_code KRB5_LIB_FUNCTION
631 krb5_get_kdc_cred(krb5_context context
,
633 krb5_kdc_flags flags
,
634 krb5_addresses
*addresses
,
635 Ticket
*second_ticket
,
636 krb5_creds
*in_creds
,
637 krb5_creds
**out_creds
643 *out_creds
= calloc(1, sizeof(**out_creds
));
644 if(*out_creds
== NULL
) {
645 krb5_set_error_message(context
, ENOMEM
,
646 N_("malloc: out of memory", ""));
649 ret
= _krb5_get_krbtgt (context
,
651 in_creds
->server
->realm
,
658 ret
= get_cred_kdc(context
, id
, flags
, addresses
,
659 in_creds
, krbtgt
, NULL
, NULL
, *out_creds
);
660 krb5_free_creds (context
, krbtgt
);
669 not_found(krb5_context context
, krb5_const_principal p
, krb5_error_code code
)
674 ret
= krb5_unparse_name(context
, p
, &str
);
676 krb5_clear_error_message(context
);
679 krb5_set_error_message(context
, code
,
680 N_("Matching credential (%s) not found", ""), str
);
685 static krb5_error_code
686 find_cred(krb5_context context
,
688 krb5_principal server
,
690 krb5_creds
*out_creds
)
695 krb5_cc_clear_mcred(&mcreds
);
696 mcreds
.server
= server
;
697 ret
= krb5_cc_retrieve_cred(context
, id
, KRB5_TC_DONT_MATCH_REALM
,
701 while(tgts
&& *tgts
){
702 if(krb5_compare_creds(context
, KRB5_TC_DONT_MATCH_REALM
,
704 ret
= krb5_copy_creds_contents(context
, *tgts
, out_creds
);
709 return not_found(context
, server
, KRB5_CC_NOTFOUND
);
712 static krb5_error_code
713 add_cred(krb5_context context
, krb5_creds
const *tkt
, krb5_creds
***tgts
)
717 krb5_creds
**tmp
= *tgts
;
719 for(i
= 0; tmp
&& tmp
[i
]; i
++); /* XXX */
720 tmp
= realloc(tmp
, (i
+2)*sizeof(*tmp
));
722 krb5_set_error_message(context
, ENOMEM
,
723 N_("malloc: out of memory", ""));
727 ret
= krb5_copy_creds(context
, tkt
, &tmp
[i
]);
734 creds = cc_get_cred(server)
735 if(creds) return creds
736 tgt = cc_get_cred(krbtgt/server_realm@any_realm)
738 return get_cred_tgt(server, tgt)
739 if(client_realm == server_realm)
741 tgt = get_cred(krbtgt/server_realm@client_realm)
742 while(tgt_inst != server_realm)
743 tgt = get_cred(krbtgt/server_realm@tgt_inst)
744 return get_cred_tgt(server, tgt)
747 static krb5_error_code
748 get_cred_kdc_capath(krb5_context context
,
749 krb5_kdc_flags flags
,
751 krb5_creds
*in_creds
,
752 krb5_principal impersonate_principal
,
753 Ticket
*second_ticket
,
754 krb5_creds
**out_creds
,
755 krb5_creds
***ret_tgts
)
758 krb5_creds
*tgt
, tmp_creds
;
759 krb5_const_realm client_realm
, server_realm
, try_realm
;
760 int ok_as_delegate
= 1;
764 client_realm
= krb5_principal_get_realm(context
, in_creds
->client
);
765 server_realm
= krb5_principal_get_realm(context
, in_creds
->server
);
766 memset(&tmp_creds
, 0, sizeof(tmp_creds
));
767 ret
= krb5_copy_principal(context
, in_creds
->client
, &tmp_creds
.client
);
771 try_realm
= krb5_config_get_string(context
, NULL
, "capaths",
772 client_realm
, server_realm
, NULL
);
773 if (try_realm
== NULL
)
774 try_realm
= client_realm
;
776 ret
= krb5_make_principal(context
,
783 krb5_free_principal(context
, tmp_creds
.client
);
789 ret
= find_cred(context
, ccache
, tmp_creds
.server
,
792 if (try_realm
!= client_realm
)
793 ok_as_delegate
= tgts
.flags
.b
.ok_as_delegate
;
795 *out_creds
= calloc(1, sizeof(**out_creds
));
796 if(*out_creds
== NULL
) {
798 krb5_set_error_message(context
, ret
,
799 N_("malloc: out of memory", ""));
801 ret
= get_cred_kdc_address(context
, ccache
, flags
, NULL
,
803 impersonate_principal
,
809 } else if (ok_as_delegate
== 0)
810 (*out_creds
)->flags
.b
.ok_as_delegate
= 0;
812 krb5_free_cred_contents(context
, &tgts
);
813 krb5_free_principal(context
, tmp_creds
.server
);
814 krb5_free_principal(context
, tmp_creds
.client
);
818 if(krb5_realm_compare(context
, in_creds
->client
, in_creds
->server
))
819 return not_found(context
, in_creds
->server
, KRB5_CC_NOTFOUND
);
821 /* XXX this can loop forever */
823 heim_general_string tgt_inst
;
825 ret
= get_cred_kdc_capath(context
, flags
, ccache
, &tmp_creds
,
826 NULL
, NULL
, &tgt
, ret_tgts
);
828 krb5_free_principal(context
, tmp_creds
.server
);
829 krb5_free_principal(context
, tmp_creds
.client
);
833 * if either of the chain or the ok_as_delegate was stripped
834 * by the kdc, make sure we strip it too.
836 if (ok_as_delegate
== 0 || tgt
->flags
.b
.ok_as_delegate
== 0) {
838 tgt
->flags
.b
.ok_as_delegate
= 0;
841 ret
= add_cred(context
, tgt
, ret_tgts
);
843 krb5_free_principal(context
, tmp_creds
.server
);
844 krb5_free_principal(context
, tmp_creds
.client
);
847 tgt_inst
= tgt
->server
->name
.name_string
.val
[1];
848 if(strcmp(tgt_inst
, server_realm
) == 0)
850 krb5_free_principal(context
, tmp_creds
.server
);
851 ret
= krb5_make_principal(context
, &tmp_creds
.server
,
852 tgt_inst
, KRB5_TGS_NAME
, server_realm
, NULL
);
854 krb5_free_principal(context
, tmp_creds
.server
);
855 krb5_free_principal(context
, tmp_creds
.client
);
858 ret
= krb5_free_creds(context
, tgt
);
860 krb5_free_principal(context
, tmp_creds
.server
);
861 krb5_free_principal(context
, tmp_creds
.client
);
866 krb5_free_principal(context
, tmp_creds
.server
);
867 krb5_free_principal(context
, tmp_creds
.client
);
868 *out_creds
= calloc(1, sizeof(**out_creds
));
869 if(*out_creds
== NULL
) {
871 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
873 ret
= get_cred_kdc_address (context
, ccache
, flags
, NULL
,
874 in_creds
, tgt
, impersonate_principal
,
875 second_ticket
, *out_creds
);
881 krb5_free_creds(context
, tgt
);
885 static krb5_error_code
886 get_cred_kdc_referral(krb5_context context
,
887 krb5_kdc_flags flags
,
889 krb5_creds
*in_creds
,
890 krb5_principal impersonate_principal
,
891 Ticket
*second_ticket
,
892 krb5_creds
**out_creds
,
893 krb5_creds
***ret_tgts
)
895 krb5_const_realm client_realm
;
897 krb5_creds tgt
, referral
, ticket
;
899 int ok_as_delegate
= 1;
901 memset(&tgt
, 0, sizeof(tgt
));
902 memset(&ticket
, 0, sizeof(ticket
));
904 flags
.b
.canonicalize
= 1;
908 client_realm
= krb5_principal_get_realm(context
, in_creds
->client
);
910 /* find tgt for the clients base realm */
912 krb5_principal tgtname
;
914 ret
= krb5_make_principal(context
, &tgtname
,
922 ret
= find_cred(context
, ccache
, tgtname
, *ret_tgts
, &tgt
);
923 krb5_free_principal(context
, tgtname
);
928 referral
= *in_creds
;
929 ret
= krb5_copy_principal(context
, in_creds
->server
, &referral
.server
);
931 krb5_free_cred_contents(context
, &tgt
);
934 ret
= krb5_principal_set_realm(context
, referral
.server
, client_realm
);
936 krb5_free_cred_contents(context
, &tgt
);
937 krb5_free_principal(context
, referral
.server
);
941 while (loop
++ < 17) {
942 krb5_creds
**tickets
;
944 char *referral_realm
;
946 /* Use cache if we are not doing impersonation or contrainte deleg */
947 if (impersonate_principal
== NULL
|| flags
.b
.constrained_delegation
) {
948 krb5_cc_clear_mcred(&mcreds
);
949 mcreds
.server
= referral
.server
;
950 ret
= krb5_cc_retrieve_cred(context
, ccache
, 0, &mcreds
, &ticket
);
955 ret
= get_cred_kdc_address (context
, ccache
, flags
, NULL
,
956 &referral
, &tgt
, impersonate_principal
,
957 second_ticket
, &ticket
);
962 /* Did we get the right ticket ? */
963 if (krb5_principal_compare_any_realm(context
,
968 if (ticket
.server
->name
.name_string
.len
!= 2 &&
969 strcmp(ticket
.server
->name
.name_string
.val
[0], KRB5_TGS_NAME
) != 0)
971 krb5_set_error_message(context
, KRB5KRB_AP_ERR_NOT_US
,
972 N_("Got back an non krbtgt "
973 "ticket referrals", ""));
974 krb5_free_cred_contents(context
, &ticket
);
975 return KRB5KRB_AP_ERR_NOT_US
;
978 referral_realm
= ticket
.server
->name
.name_string
.val
[1];
980 /* check that there are no referrals loops */
983 krb5_cc_clear_mcred(&mcreds
);
984 mcreds
.server
= ticket
.server
;
986 while(tickets
&& *tickets
){
987 if(krb5_compare_creds(context
,
988 KRB5_TC_DONT_MATCH_REALM
,
992 krb5_set_error_message(context
, KRB5_GET_IN_TKT_LOOP
,
993 N_("Referral from %s "
994 "loops back to realm %s", ""),
997 krb5_free_cred_contents(context
, &ticket
);
998 return KRB5_GET_IN_TKT_LOOP
;
1004 * if either of the chain or the ok_as_delegate was stripped
1005 * by the kdc, make sure we strip it too.
1008 if (ok_as_delegate
== 0 || ticket
.flags
.b
.ok_as_delegate
== 0) {
1010 ticket
.flags
.b
.ok_as_delegate
= 0;
1013 ret
= add_cred(context
, &ticket
, ret_tgts
);
1015 krb5_free_cred_contents(context
, &ticket
);
1019 /* try realm in the referral */
1020 ret
= krb5_principal_set_realm(context
,
1023 krb5_free_cred_contents(context
, &tgt
);
1025 memset(&ticket
, 0, sizeof(ticket
));
1030 ret
= krb5_copy_creds(context
, &ticket
, out_creds
);
1033 krb5_free_principal(context
, referral
.server
);
1034 krb5_free_cred_contents(context
, &tgt
);
1040 * Glue function between referrals version and old client chasing
1045 _krb5_get_cred_kdc_any(krb5_context context
,
1046 krb5_kdc_flags flags
,
1048 krb5_creds
*in_creds
,
1049 krb5_principal impersonate_principal
,
1050 Ticket
*second_ticket
,
1051 krb5_creds
**out_creds
,
1052 krb5_creds
***ret_tgts
)
1054 krb5_error_code ret
;
1056 ret
= get_cred_kdc_referral(context
,
1060 impersonate_principal
,
1064 if (ret
== 0 || flags
.b
.canonicalize
)
1066 return get_cred_kdc_capath(context
,
1070 impersonate_principal
,
1077 krb5_error_code KRB5_LIB_FUNCTION
1078 krb5_get_credentials_with_flags(krb5_context context
,
1080 krb5_kdc_flags flags
,
1082 krb5_creds
*in_creds
,
1083 krb5_creds
**out_creds
)
1085 krb5_error_code ret
;
1087 krb5_creds
*res_creds
;
1091 res_creds
= calloc(1, sizeof(*res_creds
));
1092 if (res_creds
== NULL
) {
1093 krb5_set_error_message(context
, ENOMEM
,
1094 N_("malloc: out of memory", ""));
1098 if (in_creds
->session
.keytype
)
1099 options
|= KRB5_TC_MATCH_KEYTYPE
;
1102 * If we got a credential, check if credential is expired before
1105 ret
= krb5_cc_retrieve_cred(context
,
1107 in_creds
->session
.keytype
?
1108 KRB5_TC_MATCH_KEYTYPE
: 0,
1109 in_creds
, res_creds
);
1111 * If we got a credential, check if credential is expired before
1112 * returning it, but only if KRB5_GC_EXPIRED_OK is not set.
1115 krb5_timestamp timeret
;
1117 /* If expired ok, don't bother checking */
1118 if(options
& KRB5_GC_EXPIRED_OK
) {
1119 *out_creds
= res_creds
;
1123 krb5_timeofday(context
, &timeret
);
1124 if(res_creds
->times
.endtime
> timeret
) {
1125 *out_creds
= res_creds
;
1128 if(options
& KRB5_GC_CACHED
)
1129 krb5_cc_remove_cred(context
, ccache
, 0, res_creds
);
1131 } else if(ret
!= KRB5_CC_END
) {
1136 if(options
& KRB5_GC_CACHED
)
1137 return not_found(context
, in_creds
->server
, KRB5_CC_NOTFOUND
);
1139 if(options
& KRB5_GC_USER_USER
)
1140 flags
.b
.enc_tkt_in_skey
= 1;
1141 if (flags
.b
.enc_tkt_in_skey
)
1142 options
|= KRB5_GC_NO_STORE
;
1145 ret
= _krb5_get_cred_kdc_any(context
, flags
, ccache
,
1146 in_creds
, NULL
, NULL
, out_creds
, &tgts
);
1147 for(i
= 0; tgts
&& tgts
[i
]; i
++) {
1148 krb5_cc_store_cred(context
, ccache
, tgts
[i
]);
1149 krb5_free_creds(context
, tgts
[i
]);
1152 if(ret
== 0 && (options
& KRB5_GC_NO_STORE
) == 0)
1153 krb5_cc_store_cred(context
, ccache
, *out_creds
);
1157 krb5_error_code KRB5_LIB_FUNCTION
1158 krb5_get_credentials(krb5_context context
,
1161 krb5_creds
*in_creds
,
1162 krb5_creds
**out_creds
)
1164 krb5_kdc_flags flags
;
1166 return krb5_get_credentials_with_flags(context
, options
, flags
,
1167 ccache
, in_creds
, out_creds
);
1170 struct krb5_get_creds_opt_data
{
1171 krb5_principal self
;
1173 krb5_enctype enctype
;
1178 krb5_error_code KRB5_LIB_FUNCTION
1179 krb5_get_creds_opt_alloc(krb5_context context
, krb5_get_creds_opt
*opt
)
1181 *opt
= calloc(1, sizeof(**opt
));
1183 krb5_set_error_message(context
, ENOMEM
,
1184 N_("malloc: out of memory", ""));
1190 void KRB5_LIB_FUNCTION
1191 krb5_get_creds_opt_free(krb5_context context
, krb5_get_creds_opt opt
)
1194 krb5_free_principal(context
, opt
->self
);
1196 free_Ticket(opt
->ticket
);
1199 memset(opt
, 0, sizeof(*opt
));
1203 void KRB5_LIB_FUNCTION
1204 krb5_get_creds_opt_set_options(krb5_context context
,
1205 krb5_get_creds_opt opt
,
1208 opt
->options
= options
;
1211 void KRB5_LIB_FUNCTION
1212 krb5_get_creds_opt_add_options(krb5_context context
,
1213 krb5_get_creds_opt opt
,
1216 opt
->options
|= options
;
1219 void KRB5_LIB_FUNCTION
1220 krb5_get_creds_opt_set_enctype(krb5_context context
,
1221 krb5_get_creds_opt opt
,
1222 krb5_enctype enctype
)
1224 opt
->enctype
= enctype
;
1227 krb5_error_code KRB5_LIB_FUNCTION
1228 krb5_get_creds_opt_set_impersonate(krb5_context context
,
1229 krb5_get_creds_opt opt
,
1230 krb5_const_principal self
)
1233 krb5_free_principal(context
, opt
->self
);
1234 return krb5_copy_principal(context
, self
, &opt
->self
);
1237 krb5_error_code KRB5_LIB_FUNCTION
1238 krb5_get_creds_opt_set_ticket(krb5_context context
,
1239 krb5_get_creds_opt opt
,
1240 const Ticket
*ticket
)
1243 free_Ticket(opt
->ticket
);
1248 krb5_error_code ret
;
1250 opt
->ticket
= malloc(sizeof(*ticket
));
1251 if (opt
->ticket
== NULL
) {
1252 krb5_set_error_message(context
, ENOMEM
,
1253 N_("malloc: out of memory", ""));
1256 ret
= copy_Ticket(ticket
, opt
->ticket
);
1260 krb5_set_error_message(context
, ret
,
1261 N_("malloc: out of memory", ""));
1270 krb5_error_code KRB5_LIB_FUNCTION
1271 krb5_get_creds(krb5_context context
,
1272 krb5_get_creds_opt opt
,
1274 krb5_const_principal inprinc
,
1275 krb5_creds
**out_creds
)
1277 krb5_kdc_flags flags
;
1279 krb5_creds in_creds
;
1280 krb5_error_code ret
;
1282 krb5_creds
*res_creds
;
1285 memset(&in_creds
, 0, sizeof(in_creds
));
1286 in_creds
.server
= rk_UNCONST(inprinc
);
1288 ret
= krb5_cc_get_principal(context
, ccache
, &in_creds
.client
);
1292 options
= opt
->options
;
1296 res_creds
= calloc(1, sizeof(*res_creds
));
1297 if (res_creds
== NULL
) {
1298 krb5_free_principal(context
, in_creds
.client
);
1299 krb5_set_error_message(context
, ENOMEM
,
1300 N_("malloc: out of memory", ""));
1305 in_creds
.session
.keytype
= opt
->enctype
;
1306 options
|= KRB5_TC_MATCH_KEYTYPE
;
1310 * If we got a credential, check if credential is expired before
1313 ret
= krb5_cc_retrieve_cred(context
,
1315 opt
->enctype
? KRB5_TC_MATCH_KEYTYPE
: 0,
1316 &in_creds
, res_creds
);
1318 * If we got a credential, check if credential is expired before
1319 * returning it, but only if KRB5_GC_EXPIRED_OK is not set.
1322 krb5_timestamp timeret
;
1324 /* If expired ok, don't bother checking */
1325 if(options
& KRB5_GC_EXPIRED_OK
) {
1326 *out_creds
= res_creds
;
1327 krb5_free_principal(context
, in_creds
.client
);
1331 krb5_timeofday(context
, &timeret
);
1332 if(res_creds
->times
.endtime
> timeret
) {
1333 *out_creds
= res_creds
;
1334 krb5_free_principal(context
, in_creds
.client
);
1337 if(options
& KRB5_GC_CACHED
)
1338 krb5_cc_remove_cred(context
, ccache
, 0, res_creds
);
1340 } else if(ret
!= KRB5_CC_END
) {
1342 krb5_free_principal(context
, in_creds
.client
);
1346 if(options
& KRB5_GC_CACHED
) {
1347 krb5_free_principal(context
, in_creds
.client
);
1348 return not_found(context
, in_creds
.server
, KRB5_CC_NOTFOUND
);
1350 if(options
& KRB5_GC_USER_USER
) {
1351 flags
.b
.enc_tkt_in_skey
= 1;
1352 options
|= KRB5_GC_NO_STORE
;
1354 if (options
& KRB5_GC_FORWARDABLE
)
1355 flags
.b
.forwardable
= 1;
1356 if (options
& KRB5_GC_NO_TRANSIT_CHECK
)
1357 flags
.b
.disable_transited_check
= 1;
1358 if (options
& KRB5_GC_CONSTRAINED_DELEGATION
) {
1359 flags
.b
.request_anonymous
= 1; /* XXX ARGH confusion */
1360 flags
.b
.constrained_delegation
= 1;
1362 if (options
& KRB5_GC_CANONICALIZE
)
1363 flags
.b
.canonicalize
= 1;
1366 ret
= _krb5_get_cred_kdc_any(context
, flags
, ccache
,
1367 &in_creds
, opt
->self
, opt
->ticket
,
1369 krb5_free_principal(context
, in_creds
.client
);
1370 for(i
= 0; tgts
&& tgts
[i
]; i
++) {
1371 krb5_cc_store_cred(context
, ccache
, tgts
[i
]);
1372 krb5_free_creds(context
, tgts
[i
]);
1375 if(ret
== 0 && (options
& KRB5_GC_NO_STORE
) == 0)
1376 krb5_cc_store_cred(context
, ccache
, *out_creds
);
1384 krb5_error_code KRB5_LIB_FUNCTION
1385 krb5_get_renewed_creds(krb5_context context
,
1387 krb5_const_principal client
,
1389 const char *in_tkt_service
)
1391 krb5_error_code ret
;
1392 krb5_kdc_flags flags
;
1393 krb5_creds in
, *template, *out
= NULL
;
1395 memset(&in
, 0, sizeof(in
));
1396 memset(creds
, 0, sizeof(*creds
));
1398 ret
= krb5_copy_principal(context
, client
, &in
.client
);
1402 if (in_tkt_service
) {
1403 ret
= krb5_parse_name(context
, in_tkt_service
, &in
.server
);
1405 krb5_free_principal(context
, in
.client
);
1409 const char *realm
= krb5_principal_get_realm(context
, client
);
1411 ret
= krb5_make_principal(context
, &in
.server
, realm
, KRB5_TGS_NAME
,
1414 krb5_free_principal(context
, in
.client
);
1420 flags
.b
.renewable
= flags
.b
.renew
= 1;
1423 * Get template from old credential cache for the same entry, if
1424 * this failes, no worries.
1426 ret
= krb5_get_credentials(context
, KRB5_GC_CACHED
, ccache
, &in
, &template);
1428 flags
.b
.forwardable
= template->flags
.b
.forwardable
;
1429 flags
.b
.proxiable
= template->flags
.b
.proxiable
;
1430 krb5_free_creds (context
, template);
1433 ret
= krb5_get_kdc_cred(context
, ccache
, flags
, NULL
, NULL
, &in
, &out
);
1434 krb5_free_principal(context
, in
.client
);
1435 krb5_free_principal(context
, in
.server
);
1439 ret
= krb5_copy_creds_contents(context
, out
, creds
);
1440 krb5_free_creds(context
, out
);