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
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <krb5_locl.h>
39 * Take the `body' and encode it into `padata' using the credentials
43 static krb5_error_code
44 make_pa_tgs_req(krb5_context context,
56 ASN1_MALLOC_ENCODE(KDC_REQ_BODY, buf, buf_size, body, &len, ret);
60 krb5_abortx(context, "internal error in ASN.1 encoder");
64 ret = _krb5_mk_req_internal(context, &ac, 0, &in_data, creds,
65 &padata->padata_value,
66 KRB5_KU_TGS_REQ_AUTH_CKSUM,
67 KRB5_KU_TGS_REQ_AUTH);
72 padata->padata_type = KRB5_PADATA_TGS_REQ;
77 * Set the `enc-authorization-data' in `req_body' based on `authdata'
80 static krb5_error_code
81 set_auth_data (krb5_context context,
82 KDC_REQ_BODY *req_body,
83 krb5_authdata *authdata,
92 ASN1_MALLOC_ENCODE(AuthorizationData, buf, buf_size, authdata,
97 krb5_abortx(context, "internal error in ASN.1 encoder");
99 ALLOC(req_body->enc_authorization_data, 1);
100 if (req_body->enc_authorization_data == NULL) {
102 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
105 ret = krb5_crypto_init(context, key, 0, &crypto);
108 free (req_body->enc_authorization_data);
109 req_body->enc_authorization_data = NULL;
112 krb5_encrypt_EncryptedData(context,
114 KRB5_KU_TGS_REQ_AUTH_DAT_SUBKEY,
115 /* KRB5_KU_TGS_REQ_AUTH_DAT_SESSION? */
119 req_body->enc_authorization_data);
121 krb5_crypto_destroy(context, crypto);
123 req_body->enc_authorization_data = NULL;
129 * Create a tgs-req in `t' with `addresses', `flags', `second_ticket'
130 * (if not-NULL), `in_creds', `krbtgt', and returning the generated
131 * subkey in `subkey'.
134 static krb5_error_code
135 init_tgs_req (krb5_context context,
137 krb5_addresses *addresses,
138 krb5_kdc_flags flags,
139 Ticket *second_ticket,
140 krb5_creds *in_creds,
143 const METHOD_DATA *padata,
144 krb5_keyblock **subkey,
147 krb5_error_code ret = 0;
149 memset(t, 0, sizeof(*t));
151 t->msg_type = krb_tgs_req;
152 if (in_creds->session.keytype) {
153 ALLOC_SEQ(&t->req_body.etype, 1);
154 if(t->req_body.etype.val == NULL) {
156 krb5_set_error_message(context, ret, "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, "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, "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, "malloc: out of memory");
205 ALLOC_SEQ(t->req_body.additional_tickets, 1);
206 if (t->req_body.additional_tickets->val == NULL) {
208 krb5_set_error_message(context, ret, "malloc: out of memory");
211 ret = copy_Ticket(second_ticket, t->req_body.additional_tickets->val);
216 if (t->padata == NULL) {
218 krb5_set_error_message(context, ret, "malloc: out of memory");
221 ALLOC_SEQ(t->padata, 1 + padata->len);
222 if (t->padata->val == NULL) {
224 krb5_set_error_message(context, ret, "malloc: out of memory");
229 for (i = 0; i < padata->len; i++) {
230 ret = copy_PA_DATA(&padata->val[i], &t->padata->val[i + 1]);
232 krb5_set_error_message(context, ret, "malloc: out of memory");
239 krb5_auth_context ac;
240 krb5_keyblock *key = NULL;
242 ret = krb5_auth_con_init(context, &ac);
246 if (krb5_config_get_bool_default(context, NULL, FALSE,
248 krbtgt->server->realm,
249 "tgs_require_subkey",
252 ret = krb5_generate_subkey (context, &krbtgt->session, &key);
254 krb5_auth_con_free (context, ac);
258 ret = krb5_auth_con_setlocalsubkey(context, ac, key);
261 krb5_free_keyblock (context, key);
262 krb5_auth_con_free (context, ac);
267 ret = set_auth_data (context, &t->req_body, &in_creds->authdata,
268 key ? key : &krbtgt->session);
271 krb5_free_keyblock (context, key);
272 krb5_auth_con_free (context, ac);
276 ret = make_pa_tgs_req(context,
283 krb5_free_keyblock (context, key);
284 krb5_auth_con_free(context, ac);
289 krb5_auth_con_free(context, ac);
293 t->req_body.addresses = NULL;
300 _krb5_get_krbtgt(krb5_context context,
308 memset(&tmp_cred, 0, sizeof(tmp_cred));
310 ret = krb5_cc_get_principal(context, id, &tmp_cred.client);
314 ret = krb5_make_principal(context,
321 krb5_free_principal(context, tmp_cred.client);
324 ret = krb5_get_credentials(context,
329 krb5_free_principal(context, tmp_cred.client);
330 krb5_free_principal(context, tmp_cred.server);
336 /* DCE compatible decrypt proc */
337 static krb5_error_code
338 decrypt_tkt_with_subkey (krb5_context context,
340 krb5_key_usage usage,
341 krb5_const_pointer subkey,
342 krb5_kdc_rep *dec_rep)
349 ret = krb5_crypto_init(context, key, 0, &crypto);
352 ret = krb5_decrypt_EncryptedData (context,
355 &dec_rep->kdc_rep.enc_part,
357 krb5_crypto_destroy(context, crypto);
359 /* DCE compat -- try to decrypt with subkey */
360 ret = krb5_crypto_init(context, subkey, 0, &crypto);
363 ret = krb5_decrypt_EncryptedData (context,
365 KRB5_KU_TGS_REP_ENC_PART_SUB_KEY,
366 &dec_rep->kdc_rep.enc_part,
368 krb5_crypto_destroy(context, crypto);
373 ret = krb5_decode_EncASRepPart(context,
379 ret = krb5_decode_EncTGSRepPart(context,
384 krb5_data_free (&data);
388 static krb5_error_code
389 get_cred_kdc(krb5_context context,
391 krb5_kdc_flags flags,
392 krb5_addresses *addresses,
393 krb5_creds *in_creds,
395 krb5_principal impersonate_principal,
396 Ticket *second_ticket,
397 krb5_creds *out_creds)
406 krb5_keyblock *subkey = NULL;
408 Ticket second_ticket_data;
411 krb5_data_zero(&resp);
412 krb5_data_zero(&enc);
416 krb5_generate_random_block(&nonce, sizeof(nonce));
419 if(flags.b.enc_tkt_in_skey && second_ticket == NULL){
420 ret = decode_Ticket(in_creds->second_ticket.data,
421 in_creds->second_ticket.length,
422 &second_ticket_data, &len);
425 second_ticket = &second_ticket_data;
429 if (impersonate_principal) {
436 self.name = impersonate_principal->name;
437 self.realm = impersonate_principal->realm;
438 self.auth = estrdup("Kerberos");
440 ret = _krb5_s4u2self_to_checksumdata(context, &self, &data);
446 ret = krb5_crypto_init(context, &krbtgt->session, 0, &crypto);
449 krb5_data_free(&data);
453 ret = krb5_create_checksum(context,
460 krb5_crypto_destroy(context, crypto);
461 krb5_data_free(&data);
467 ASN1_MALLOC_ENCODE(PA_S4U2Self, buf, len, &self, &size, ret);
469 free_Checksum(&self.cksum);
473 krb5_abortx(context, "internal asn1 error");
475 ret = krb5_padata_add(context, &padata, KRB5_PADATA_S4U2SELF, buf, len);
480 ret = init_tgs_req (context,
494 ASN1_MALLOC_ENCODE(TGS_REQ, enc.data, enc.length, &req, &len, ret);
497 if(enc.length != len)
498 krb5_abortx(context, "internal error in ASN.1 encoder");
500 /* don't free addresses */
501 req.req_body.addresses = NULL;
508 krb5_sendto_ctx stctx;
509 ret = krb5_sendto_ctx_alloc(context, &stctx);
512 krb5_sendto_ctx_set_func(stctx, _krb5_kdc_retry, NULL);
514 ret = krb5_sendto_context (context, stctx, &enc,
515 krbtgt->server->name.name_string.val[1],
517 krb5_sendto_ctx_free(context, stctx);
522 memset(&rep, 0, sizeof(rep));
523 if(decode_TGS_REP(resp.data, resp.length, &rep.kdc_rep, &len) == 0) {
526 ret = krb5_copy_principal(context,
531 ret = krb5_copy_principal(context,
536 /* this should go someplace else */
537 out_creds->times.endtime = in_creds->times.endtime;
539 /* XXX should do better testing */
540 if (flags.b.constrained_delegation || impersonate_principal)
541 eflags |= EXTRACT_TICKET_ALLOW_CNAME_MISMATCH;
543 ret = _krb5_extract_ticket(context,
548 KRB5_KU_TGS_REP_ENC_PART_SESSION,
552 decrypt_tkt_with_subkey,
555 krb5_free_kdc_rep(context, &rep);
556 } else if(krb5_rd_error(context, &resp, &error) == 0) {
557 ret = krb5_error_from_rd_error(context, &error, in_creds);
558 krb5_free_error_contents(context, &error);
559 } else if(resp.data && ((char*)resp.data)[0] == 4) {
560 ret = KRB5KRB_AP_ERR_V4_REPLY;
561 krb5_clear_error_string(context);
563 ret = KRB5KRB_AP_ERR_MSG_TYPE;
564 krb5_clear_error_string(context);
568 if (second_ticket == &second_ticket_data)
569 free_Ticket(&second_ticket_data);
570 free_METHOD_DATA(&padata);
571 krb5_data_free(&resp);
572 krb5_data_free(&enc);
574 krb5_free_keyblock_contents(context, subkey);
582 * same as above, just get local addresses first if the krbtgt have
583 * them and the realm is not addressless
586 static krb5_error_code
587 get_cred_kdc_address(krb5_context context,
589 krb5_kdc_flags flags,
590 krb5_addresses *addrs,
591 krb5_creds *in_creds,
593 krb5_principal impersonate_principal,
594 Ticket *second_ticket,
595 krb5_creds *out_creds)
598 krb5_addresses addresses = { 0, NULL };
601 * Inherit the address-ness of the krbtgt if the address is not
605 if (addrs == NULL && krbtgt->addresses.len != 0) {
608 krb5_appdefault_boolean(context, NULL, krbtgt->server->realm,
609 "no-addresses", FALSE, &noaddr);
612 krb5_get_all_client_addrs(context, &addresses);
613 /* XXX this sucks. */
615 if(addresses.len == 0)
619 ret = get_cred_kdc(context, id, flags, addrs, in_creds,
620 krbtgt, impersonate_principal,
621 second_ticket, out_creds);
622 krb5_free_addresses(context, &addresses);
626 krb5_error_code KRB5_LIB_FUNCTION
627 krb5_get_kdc_cred(krb5_context context,
629 krb5_kdc_flags flags,
630 krb5_addresses *addresses,
631 Ticket *second_ticket,
632 krb5_creds *in_creds,
633 krb5_creds **out_creds
639 *out_creds = calloc(1, sizeof(**out_creds));
640 if(*out_creds == NULL) {
641 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
644 ret = _krb5_get_krbtgt (context,
646 in_creds->server->realm,
652 ret = get_cred_kdc(context, id, flags, addresses,
653 in_creds, krbtgt, NULL, NULL, *out_creds);
654 krb5_free_creds (context, krbtgt);
661 not_found(krb5_context context, krb5_const_principal p, krb5_error_code code)
666 ret = krb5_unparse_name(context, p, &str);
668 krb5_clear_error_string(context);
671 krb5_set_error_message(context, code, "Matching credential (%s) not found", str);
676 static krb5_error_code
677 find_cred(krb5_context context,
679 krb5_principal server,
681 krb5_creds *out_creds)
686 krb5_cc_clear_mcred(&mcreds);
687 mcreds.server = server;
688 ret = krb5_cc_retrieve_cred(context, id, KRB5_TC_DONT_MATCH_REALM,
692 while(tgts && *tgts){
693 if(krb5_compare_creds(context, KRB5_TC_DONT_MATCH_REALM,
695 ret = krb5_copy_creds_contents(context, *tgts, out_creds);
700 return not_found(context, server, KRB5_CC_NOTFOUND);
703 static krb5_error_code
704 add_cred(krb5_context context, krb5_creds const *tkt, krb5_creds ***tgts)
708 krb5_creds **tmp = *tgts;
710 for(i = 0; tmp && tmp[i]; i++); /* XXX */
711 tmp = realloc(tmp, (i+2)*sizeof(*tmp));
713 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
717 ret = krb5_copy_creds(context, tkt, &tmp[i]);
724 creds = cc_get_cred(server)
725 if(creds) return creds
726 tgt = cc_get_cred(krbtgt/server_realm@any_realm)
728 return get_cred_tgt(server, tgt)
729 if(client_realm == server_realm)
731 tgt = get_cred(krbtgt/server_realm@client_realm)
732 while(tgt_inst != server_realm)
733 tgt = get_cred(krbtgt/server_realm@tgt_inst)
734 return get_cred_tgt(server, tgt)
737 static krb5_error_code
738 get_cred_kdc_capath(krb5_context context,
739 krb5_kdc_flags flags,
741 krb5_creds *in_creds,
742 krb5_principal impersonate_principal,
743 Ticket *second_ticket,
744 krb5_creds **out_creds,
745 krb5_creds ***ret_tgts)
748 krb5_creds *tgt, tmp_creds;
749 krb5_const_realm client_realm, server_realm, try_realm;
753 client_realm = krb5_principal_get_realm(context, in_creds->client);
754 server_realm = krb5_principal_get_realm(context, in_creds->server);
755 memset(&tmp_creds, 0, sizeof(tmp_creds));
756 ret = krb5_copy_principal(context, in_creds->client, &tmp_creds.client);
760 try_realm = krb5_config_get_string(context, NULL, "capaths",
761 client_realm, server_realm, NULL);
762 if (try_realm == NULL)
763 try_realm = client_realm;
765 ret = krb5_make_principal(context,
772 krb5_free_principal(context, tmp_creds.client);
778 ret = find_cred(context, ccache, tmp_creds.server,
781 *out_creds = calloc(1, sizeof(**out_creds));
782 if(*out_creds == NULL) {
784 krb5_set_error_message(context, ret, "malloc: out of memory");
786 ret = get_cred_kdc_address(context, ccache, flags, NULL,
788 impersonate_principal,
796 krb5_free_cred_contents(context, &tgts);
797 krb5_free_principal(context, tmp_creds.server);
798 krb5_free_principal(context, tmp_creds.client);
802 if(krb5_realm_compare(context, in_creds->client, in_creds->server))
803 return not_found(context, in_creds->server, KRB5_CC_NOTFOUND);
805 /* XXX this can loop forever */
807 heim_general_string tgt_inst;
809 ret = get_cred_kdc_capath(context, flags, ccache, &tmp_creds,
810 NULL, NULL, &tgt, ret_tgts);
812 krb5_free_principal(context, tmp_creds.server);
813 krb5_free_principal(context, tmp_creds.client);
816 ret = add_cred(context, tgt, ret_tgts);
818 krb5_free_principal(context, tmp_creds.server);
819 krb5_free_principal(context, tmp_creds.client);
822 tgt_inst = tgt->server->name.name_string.val[1];
823 if(strcmp(tgt_inst, server_realm) == 0)
825 krb5_free_principal(context, tmp_creds.server);
826 ret = krb5_make_principal(context, &tmp_creds.server,
827 tgt_inst, KRB5_TGS_NAME, server_realm, NULL);
829 krb5_free_principal(context, tmp_creds.server);
830 krb5_free_principal(context, tmp_creds.client);
833 ret = krb5_free_creds(context, tgt);
835 krb5_free_principal(context, tmp_creds.server);
836 krb5_free_principal(context, tmp_creds.client);
841 krb5_free_principal(context, tmp_creds.server);
842 krb5_free_principal(context, tmp_creds.client);
843 *out_creds = calloc(1, sizeof(**out_creds));
844 if(*out_creds == NULL) {
846 krb5_set_error_message(context, ret, "malloc: out of memory");
848 ret = get_cred_kdc_address (context, ccache, flags, NULL,
849 in_creds, tgt, impersonate_principal,
850 second_ticket, *out_creds);
856 krb5_free_creds(context, tgt);
860 static krb5_error_code
861 get_cred_kdc_referral(krb5_context context,
862 krb5_kdc_flags flags,
864 krb5_creds *in_creds,
865 krb5_principal impersonate_principal,
866 Ticket *second_ticket,
867 krb5_creds **out_creds,
868 krb5_creds ***ret_tgts)
870 krb5_const_realm client_realm;
872 krb5_creds tgt, referral, ticket;
875 memset(&tgt, 0, sizeof(tgt));
876 memset(&ticket, 0, sizeof(ticket));
878 flags.b.canonicalize = 1;
882 client_realm = krb5_principal_get_realm(context, in_creds->client);
884 /* find tgt for the clients base realm */
886 krb5_principal tgtname;
888 ret = krb5_make_principal(context, &tgtname,
896 ret = find_cred(context, ccache, tgtname, *ret_tgts, &tgt);
897 krb5_free_principal(context, tgtname);
902 referral = *in_creds;
903 ret = krb5_copy_principal(context, in_creds->server, &referral.server);
905 krb5_free_cred_contents(context, &tgt);
908 ret = krb5_principal_set_realm(context, referral.server, client_realm);
910 krb5_free_cred_contents(context, &tgt);
911 krb5_free_principal(context, referral.server);
915 while (loop++ < 17) {
916 krb5_creds **tickets;
918 char *referral_realm;
920 /* Use cache if we are not doing impersonation or contrainte deleg */
921 if (impersonate_principal == NULL || flags.b.constrained_delegation) {
922 krb5_cc_clear_mcred(&mcreds);
923 mcreds.server = referral.server;
924 ret = krb5_cc_retrieve_cred(context, ccache, 0, &mcreds, &ticket);
929 ret = get_cred_kdc_address (context, ccache, flags, NULL,
930 &referral, &tgt, impersonate_principal,
931 second_ticket, &ticket);
936 /* Did we get the right ticket ? */
937 if (krb5_principal_compare_any_realm(context,
942 if (ticket.server->name.name_string.len != 2 &&
943 strcmp(ticket.server->name.name_string.val[0], KRB5_TGS_NAME) != 0)
945 krb5_set_error_message(context, KRB5KRB_AP_ERR_NOT_US,
946 "Got back an non krbtgt ticket referrals");
947 krb5_free_cred_contents(context, &ticket);
948 return KRB5KRB_AP_ERR_NOT_US;
951 referral_realm = ticket.server->name.name_string.val[1];
953 /* check that there are no referrals loops */
956 krb5_cc_clear_mcred(&mcreds);
957 mcreds.server = ticket.server;
959 while(tickets && *tickets){
960 if(krb5_compare_creds(context,
961 KRB5_TC_DONT_MATCH_REALM,
965 krb5_set_error_message(context, KRB5_GET_IN_TKT_LOOP,
966 "Referral from %s loops back to realm %s",
969 krb5_free_cred_contents(context, &ticket);
970 return KRB5_GET_IN_TKT_LOOP;
975 ret = add_cred(context, &ticket, ret_tgts);
977 krb5_free_cred_contents(context, &ticket);
981 /* try realm in the referral */
982 ret = krb5_principal_set_realm(context,
985 krb5_free_cred_contents(context, &tgt);
987 memset(&ticket, 0, sizeof(ticket));
992 ret = krb5_copy_creds(context, &ticket, out_creds);
995 krb5_free_principal(context, referral.server);
996 krb5_free_cred_contents(context, &tgt);
1002 * Glue function between referrals version and old client chasing
1006 static krb5_error_code
1007 get_cred_kdc_any(krb5_context context,
1008 krb5_kdc_flags flags,
1010 krb5_creds *in_creds,
1011 krb5_principal impersonate_principal,
1012 Ticket *second_ticket,
1013 krb5_creds **out_creds,
1014 krb5_creds ***ret_tgts)
1016 krb5_error_code ret;
1018 ret = get_cred_kdc_referral(context,
1022 impersonate_principal,
1026 if (ret == 0 || flags.b.canonicalize)
1028 return get_cred_kdc_capath(context,
1032 impersonate_principal,
1039 krb5_error_code KRB5_LIB_FUNCTION
1040 krb5_get_cred_from_kdc_opt(krb5_context context,
1042 krb5_creds *in_creds,
1043 krb5_creds **out_creds,
1044 krb5_creds ***ret_tgts,
1049 return get_cred_kdc_any(context, f, ccache,
1050 in_creds, NULL, NULL,
1051 out_creds, ret_tgts);
1054 krb5_error_code KRB5_LIB_FUNCTION
1055 krb5_get_cred_from_kdc(krb5_context context,
1057 krb5_creds *in_creds,
1058 krb5_creds **out_creds,
1059 krb5_creds ***ret_tgts)
1061 return krb5_get_cred_from_kdc_opt(context, ccache,
1062 in_creds, out_creds, ret_tgts, 0);
1066 krb5_error_code KRB5_LIB_FUNCTION
1067 krb5_get_credentials_with_flags(krb5_context context,
1069 krb5_kdc_flags flags,
1071 krb5_creds *in_creds,
1072 krb5_creds **out_creds)
1074 krb5_error_code ret;
1076 krb5_creds *res_creds;
1080 res_creds = calloc(1, sizeof(*res_creds));
1081 if (res_creds == NULL) {
1082 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
1086 if (in_creds->session.keytype)
1087 options |= KRB5_TC_MATCH_KEYTYPE;
1090 * If we got a credential, check if credential is expired before
1093 ret = krb5_cc_retrieve_cred(context,
1095 in_creds->session.keytype ?
1096 KRB5_TC_MATCH_KEYTYPE : 0,
1097 in_creds, res_creds);
1099 * If we got a credential, check if credential is expired before
1100 * returning it, but only if KRB5_GC_EXPIRED_OK is not set.
1103 krb5_timestamp timeret;
1105 /* If expired ok, don't bother checking */
1106 if(options & KRB5_GC_EXPIRED_OK) {
1107 *out_creds = res_creds;
1111 krb5_timeofday(context, &timeret);
1112 if(res_creds->times.endtime > timeret) {
1113 *out_creds = res_creds;
1116 if(options & KRB5_GC_CACHED)
1117 krb5_cc_remove_cred(context, ccache, 0, res_creds);
1119 } else if(ret != KRB5_CC_END) {
1124 if(options & KRB5_GC_CACHED)
1125 return not_found(context, in_creds->server, KRB5_CC_NOTFOUND);
1127 if(options & KRB5_GC_USER_USER)
1128 flags.b.enc_tkt_in_skey = 1;
1129 if (flags.b.enc_tkt_in_skey)
1130 options |= KRB5_GC_NO_STORE;
1133 ret = get_cred_kdc_any(context, flags, ccache,
1134 in_creds, NULL, NULL, out_creds, &tgts);
1135 for(i = 0; tgts && tgts[i]; i++) {
1136 krb5_cc_store_cred(context, ccache, tgts[i]);
1137 krb5_free_creds(context, tgts[i]);
1140 if(ret == 0 && (options & KRB5_GC_NO_STORE) == 0)
1141 krb5_cc_store_cred(context, ccache, *out_creds);
1145 krb5_error_code KRB5_LIB_FUNCTION
1146 krb5_get_credentials(krb5_context context,
1149 krb5_creds *in_creds,
1150 krb5_creds **out_creds)
1152 krb5_kdc_flags flags;
1154 return krb5_get_credentials_with_flags(context, options, flags,
1155 ccache, in_creds, out_creds);
1158 struct krb5_get_creds_opt_data {
1159 krb5_principal self;
1161 krb5_enctype enctype;
1166 krb5_error_code KRB5_LIB_FUNCTION
1167 krb5_get_creds_opt_alloc(krb5_context context, krb5_get_creds_opt *opt)
1169 *opt = calloc(1, sizeof(**opt));
1171 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
1177 void KRB5_LIB_FUNCTION
1178 krb5_get_creds_opt_free(krb5_context context, krb5_get_creds_opt opt)
1181 krb5_free_principal(context, opt->self);
1182 memset(opt, 0, sizeof(*opt));
1186 void KRB5_LIB_FUNCTION
1187 krb5_get_creds_opt_set_options(krb5_context context,
1188 krb5_get_creds_opt opt,
1191 opt->options = options;
1194 void KRB5_LIB_FUNCTION
1195 krb5_get_creds_opt_add_options(krb5_context context,
1196 krb5_get_creds_opt opt,
1199 opt->options |= options;
1202 void KRB5_LIB_FUNCTION
1203 krb5_get_creds_opt_set_enctype(krb5_context context,
1204 krb5_get_creds_opt opt,
1205 krb5_enctype enctype)
1207 opt->enctype = enctype;
1210 krb5_error_code KRB5_LIB_FUNCTION
1211 krb5_get_creds_opt_set_impersonate(krb5_context context,
1212 krb5_get_creds_opt opt,
1213 krb5_const_principal self)
1216 krb5_free_principal(context, opt->self);
1217 return krb5_copy_principal(context, self, &opt->self);
1220 krb5_error_code KRB5_LIB_FUNCTION
1221 krb5_get_creds_opt_set_ticket(krb5_context context,
1222 krb5_get_creds_opt opt,
1223 const Ticket *ticket)
1226 free_Ticket(opt->ticket);
1231 krb5_error_code ret;
1233 opt->ticket = malloc(sizeof(*ticket));
1234 if (opt->ticket == NULL) {
1235 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
1238 ret = copy_Ticket(ticket, opt->ticket);
1242 krb5_set_error_message(context, ret, "malloc: out of memory");
1251 krb5_error_code KRB5_LIB_FUNCTION
1252 krb5_get_creds(krb5_context context,
1253 krb5_get_creds_opt opt,
1255 krb5_const_principal inprinc,
1256 krb5_creds **out_creds)
1258 krb5_kdc_flags flags;
1260 krb5_creds in_creds;
1261 krb5_error_code ret;
1263 krb5_creds *res_creds;
1266 memset(&in_creds, 0, sizeof(in_creds));
1267 in_creds.server = rk_UNCONST(inprinc);
1269 ret = krb5_cc_get_principal(context, ccache, &in_creds.client);
1273 options = opt->options;
1277 res_creds = calloc(1, sizeof(*res_creds));
1278 if (res_creds == NULL) {
1279 krb5_free_principal(context, in_creds.client);
1280 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
1285 in_creds.session.keytype = opt->enctype;
1286 options |= KRB5_TC_MATCH_KEYTYPE;
1290 * If we got a credential, check if credential is expired before
1293 ret = krb5_cc_retrieve_cred(context,
1295 opt->enctype ? KRB5_TC_MATCH_KEYTYPE : 0,
1296 &in_creds, res_creds);
1298 * If we got a credential, check if credential is expired before
1299 * returning it, but only if KRB5_GC_EXPIRED_OK is not set.
1302 krb5_timestamp timeret;
1304 /* If expired ok, don't bother checking */
1305 if(options & KRB5_GC_EXPIRED_OK) {
1306 *out_creds = res_creds;
1307 krb5_free_principal(context, in_creds.client);
1311 krb5_timeofday(context, &timeret);
1312 if(res_creds->times.endtime > timeret) {
1313 *out_creds = res_creds;
1314 krb5_free_principal(context, in_creds.client);
1317 if(options & KRB5_GC_CACHED)
1318 krb5_cc_remove_cred(context, ccache, 0, res_creds);
1320 } else if(ret != KRB5_CC_END) {
1322 krb5_free_principal(context, in_creds.client);
1326 if(options & KRB5_GC_CACHED) {
1327 krb5_free_principal(context, in_creds.client);
1328 return not_found(context, in_creds.server, KRB5_CC_NOTFOUND);
1330 if(options & KRB5_GC_USER_USER) {
1331 flags.b.enc_tkt_in_skey = 1;
1332 options |= KRB5_GC_NO_STORE;
1334 if (options & KRB5_GC_FORWARDABLE)
1335 flags.b.forwardable = 1;
1336 if (options & KRB5_GC_NO_TRANSIT_CHECK)
1337 flags.b.disable_transited_check = 1;
1338 if (options & KRB5_GC_CONSTRAINED_DELEGATION) {
1339 flags.b.request_anonymous = 1; /* XXX ARGH confusion */
1340 flags.b.constrained_delegation = 1;
1342 if (options & KRB5_GC_CANONICALIZE)
1343 flags.b.canonicalize = 1;
1346 ret = get_cred_kdc_any(context, flags, ccache,
1347 &in_creds, opt->self, opt->ticket,
1349 krb5_free_principal(context, in_creds.client);
1350 for(i = 0; tgts && tgts[i]; i++) {
1351 krb5_cc_store_cred(context, ccache, tgts[i]);
1352 krb5_free_creds(context, tgts[i]);
1355 if(ret == 0 && (options & KRB5_GC_NO_STORE) == 0)
1356 krb5_cc_store_cred(context, ccache, *out_creds);
1364 krb5_error_code KRB5_LIB_FUNCTION
1365 krb5_get_renewed_creds(krb5_context context,
1367 krb5_const_principal client,
1369 const char *in_tkt_service)
1371 krb5_error_code ret;
1372 krb5_kdc_flags flags;
1373 krb5_creds in, *template, *out = NULL;
1375 memset(&in, 0, sizeof(in));
1376 memset(creds, 0, sizeof(*creds));
1378 ret = krb5_copy_principal(context, client, &in.client);
1382 if (in_tkt_service) {
1383 ret = krb5_parse_name(context, in_tkt_service, &in.server);
1385 krb5_free_principal(context, in.client);
1389 const char *realm = krb5_principal_get_realm(context, client);
1391 ret = krb5_make_principal(context, &in.server, realm, KRB5_TGS_NAME,
1394 krb5_free_principal(context, in.client);
1400 flags.b.renewable = flags.b.renew = 1;
1403 * Get template from old credential cache for the same entry, if
1404 * this failes, no worries.
1406 ret = krb5_get_credentials(context, KRB5_GC_CACHED, ccache, &in, &template);
1408 flags.b.forwardable = template->flags.b.forwardable;
1409 flags.b.proxiable = template->flags.b.proxiable;
1410 krb5_free_creds (context, template);
1413 ret = krb5_get_kdc_cred(context, ccache, flags, NULL, NULL, &in, &out);
1414 krb5_free_principal(context, in.client);
1415 krb5_free_principal(context, in.server);
1419 ret = krb5_copy_creds_contents(context, out, creds);
1420 krb5_free_creds(context, out);