2 * Copyright (c) 1997 - 2007 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>
36 RCSID("$Id: get_cred.c 21004 2007-06-08 01:53:10Z lha $");
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,
57 ASN1_MALLOC_ENCODE(KDC_REQ_BODY, buf, buf_size, body, &len, ret);
61 krb5_abortx(context, "internal error in ASN.1 encoder");
65 ret = _krb5_mk_req_internal(context, &ac, 0, &in_data, creds,
66 &padata->padata_value,
67 KRB5_KU_TGS_REQ_AUTH_CKSUM,
69 /* KRB5_KU_TGS_REQ_AUTH */);
74 padata->padata_type = KRB5_PADATA_TGS_REQ;
79 * Set the `enc-authorization-data' in `req_body' based on `authdata'
82 static krb5_error_code
83 set_auth_data (krb5_context context,
84 KDC_REQ_BODY *req_body,
85 krb5_authdata *authdata,
94 ASN1_MALLOC_ENCODE(AuthorizationData, buf, buf_size, authdata,
99 krb5_abortx(context, "internal error in ASN.1 encoder");
101 ALLOC(req_body->enc_authorization_data, 1);
102 if (req_body->enc_authorization_data == NULL) {
104 krb5_set_error_string(context, "malloc: out of memory");
107 ret = krb5_crypto_init(context, key, 0, &crypto);
110 free (req_body->enc_authorization_data);
111 req_body->enc_authorization_data = NULL;
114 krb5_encrypt_EncryptedData(context,
116 KRB5_KU_TGS_REQ_AUTH_DAT_SUBKEY,
117 /* KRB5_KU_TGS_REQ_AUTH_DAT_SESSION? */
121 req_body->enc_authorization_data);
123 krb5_crypto_destroy(context, crypto);
125 req_body->enc_authorization_data = NULL;
131 * Create a tgs-req in `t' with `addresses', `flags', `second_ticket'
132 * (if not-NULL), `in_creds', `krbtgt', and returning the generated
133 * subkey in `subkey'.
136 static krb5_error_code
137 init_tgs_req (krb5_context context,
139 krb5_addresses *addresses,
140 krb5_kdc_flags flags,
141 Ticket *second_ticket,
142 krb5_creds *in_creds,
145 const METHOD_DATA *padata,
146 krb5_keyblock **subkey,
148 krb5_key_usage usage)
150 krb5_error_code ret = 0;
152 memset(t, 0, sizeof(*t));
154 t->msg_type = krb_tgs_req;
155 if (in_creds->session.keytype) {
156 ALLOC_SEQ(&t->req_body.etype, 1);
157 if(t->req_body.etype.val == NULL) {
159 krb5_set_error_string(context, "malloc: out of memory");
162 t->req_body.etype.val[0] = in_creds->session.keytype;
164 ret = krb5_init_etype(context,
165 &t->req_body.etype.len,
166 &t->req_body.etype.val,
171 t->req_body.addresses = addresses;
172 t->req_body.kdc_options = flags.b;
173 ret = copy_Realm(&in_creds->server->realm, &t->req_body.realm);
176 ALLOC(t->req_body.sname, 1);
177 if (t->req_body.sname == NULL) {
179 krb5_set_error_string(context, "malloc: out of memory");
183 /* some versions of some code might require that the client be
184 present in TGS-REQs, but this is clearly against the spec */
186 ret = copy_PrincipalName(&in_creds->server->name, t->req_body.sname);
190 /* req_body.till should be NULL if there is no endtime specified,
191 but old MIT code (like DCE secd) doesn't like that */
192 ALLOC(t->req_body.till, 1);
193 if(t->req_body.till == NULL){
195 krb5_set_error_string(context, "malloc: out of memory");
198 *t->req_body.till = in_creds->times.endtime;
200 t->req_body.nonce = nonce;
202 ALLOC(t->req_body.additional_tickets, 1);
203 if (t->req_body.additional_tickets == NULL) {
205 krb5_set_error_string(context, "malloc: out of memory");
208 ALLOC_SEQ(t->req_body.additional_tickets, 1);
209 if (t->req_body.additional_tickets->val == NULL) {
211 krb5_set_error_string(context, "malloc: out of memory");
214 ret = copy_Ticket(second_ticket, t->req_body.additional_tickets->val);
219 if (t->padata == NULL) {
221 krb5_set_error_string(context, "malloc: out of memory");
224 ALLOC_SEQ(t->padata, 1 + padata->len);
225 if (t->padata->val == NULL) {
227 krb5_set_error_string(context, "malloc: out of memory");
232 for (i = 0; i < padata->len; i++) {
233 ret = copy_PA_DATA(&padata->val[i], &t->padata->val[i + 1]);
235 krb5_set_error_string(context, "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,
287 krb5_free_keyblock (context, key);
288 krb5_auth_con_free(context, ac);
293 krb5_auth_con_free(context, ac);
297 t->req_body.addresses = NULL;
304 _krb5_get_krbtgt(krb5_context context,
312 memset(&tmp_cred, 0, sizeof(tmp_cred));
314 ret = krb5_cc_get_principal(context, id, &tmp_cred.client);
318 ret = krb5_make_principal(context,
325 krb5_free_principal(context, tmp_cred.client);
328 ret = krb5_get_credentials(context,
333 krb5_free_principal(context, tmp_cred.client);
334 krb5_free_principal(context, tmp_cred.server);
340 /* DCE compatible decrypt proc */
341 static krb5_error_code
342 decrypt_tkt_with_subkey (krb5_context context,
344 krb5_key_usage usage,
345 krb5_const_pointer subkey,
346 krb5_kdc_rep *dec_rep)
353 ret = krb5_crypto_init(context, key, 0, &crypto);
356 ret = krb5_decrypt_EncryptedData (context,
359 &dec_rep->kdc_rep.enc_part,
361 krb5_crypto_destroy(context, crypto);
363 /* DCE compat -- try to decrypt with subkey */
364 ret = krb5_crypto_init(context, subkey, 0, &crypto);
367 ret = krb5_decrypt_EncryptedData (context,
369 KRB5_KU_TGS_REP_ENC_PART_SUB_KEY,
370 &dec_rep->kdc_rep.enc_part,
372 krb5_crypto_destroy(context, crypto);
377 ret = krb5_decode_EncASRepPart(context,
383 ret = krb5_decode_EncTGSRepPart(context,
388 krb5_data_free (&data);
392 static krb5_error_code
393 get_cred_kdc_usage(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,
402 krb5_key_usage usage)
411 krb5_keyblock *subkey = NULL;
413 Ticket second_ticket_data;
414 int send_to_kdc_flags = 0;
417 krb5_data_zero(&resp);
418 krb5_data_zero(&enc);
422 krb5_generate_random_block(&nonce, sizeof(nonce));
425 if(flags.b.enc_tkt_in_skey && second_ticket == NULL){
426 ret = decode_Ticket(in_creds->second_ticket.data,
427 in_creds->second_ticket.length,
428 &second_ticket_data, &len);
431 second_ticket = &second_ticket_data;
435 if (impersonate_principal) {
442 self.name = impersonate_principal->name;
443 self.realm = impersonate_principal->realm;
444 self.auth = estrdup("Kerberos");
446 ret = _krb5_s4u2self_to_checksumdata(context, &self, &data);
452 ret = krb5_crypto_init(context, &krbtgt->session, 0, &crypto);
455 krb5_data_free(&data);
459 ret = krb5_create_checksum(context,
466 krb5_crypto_destroy(context, crypto);
467 krb5_data_free(&data);
473 ASN1_MALLOC_ENCODE(PA_S4U2Self, buf, len, &self, &size, ret);
475 free_Checksum(&self.cksum);
479 krb5_abortx(context, "internal asn1 error");
481 ret = krb5_padata_add(context, &padata, KRB5_PADATA_S4U2SELF, buf, len);
486 ret = init_tgs_req (context,
501 ASN1_MALLOC_ENCODE(TGS_REQ, enc.data, enc.length, &req, &len, ret);
504 if(enc.length != len)
505 krb5_abortx(context, "internal error in ASN.1 encoder");
507 /* don't free addresses */
508 req.req_body.addresses = NULL;
515 ret = krb5_sendto_kdc_flags (context, &enc,
516 &krbtgt->server->name.name_string.val[1],
522 memset(&rep, 0, sizeof(rep));
523 if(decode_TGS_REP(resp.data, resp.length, &rep.kdc_rep, &len) == 0){
524 ret = krb5_copy_principal(context,
529 ret = krb5_copy_principal(context,
534 /* this should go someplace else */
535 out_creds->times.endtime = in_creds->times.endtime;
537 ret = _krb5_extract_ticket(context,
542 KRB5_KU_TGS_REP_ENC_PART_SESSION,
545 EXTRACT_TICKET_ALLOW_CNAME_MISMATCH|
546 EXTRACT_TICKET_ALLOW_SERVER_MISMATCH,
547 decrypt_tkt_with_subkey,
549 krb5_free_kdc_rep(context, &rep);
550 } else if(krb5_rd_error(context, &resp, &error) == 0) {
551 ret = krb5_error_from_rd_error(context, &error, in_creds);
552 krb5_free_error_contents(context, &error);
554 if (ret == KRB5KRB_ERR_RESPONSE_TOO_BIG && !(send_to_kdc_flags & KRB5_KRBHST_FLAGS_LARGE_MSG)) {
555 send_to_kdc_flags |= KRB5_KRBHST_FLAGS_LARGE_MSG;
556 krb5_data_free(&resp);
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);
581 static krb5_error_code
582 get_cred_kdc(krb5_context context,
584 krb5_kdc_flags flags,
585 krb5_addresses *addresses,
586 krb5_creds *in_creds,
588 krb5_principal impersonate_principal,
589 Ticket *second_ticket,
590 krb5_creds *out_creds)
594 ret = get_cred_kdc_usage(context, id, flags, addresses, in_creds,
595 krbtgt, impersonate_principal, second_ticket,
596 out_creds, KRB5_KU_TGS_REQ_AUTH);
597 if (ret == KRB5KRB_AP_ERR_BAD_INTEGRITY) {
598 krb5_clear_error_string (context);
599 ret = get_cred_kdc_usage(context, id, flags, addresses, in_creds,
600 krbtgt, impersonate_principal, second_ticket,
601 out_creds, KRB5_KU_AP_REQ_AUTH);
606 /* same as above, just get local addresses first */
608 static krb5_error_code
609 get_cred_kdc_la(krb5_context context, krb5_ccache id, krb5_kdc_flags flags,
610 krb5_creds *in_creds, krb5_creds *krbtgt,
611 krb5_principal impersonate_principal, Ticket *second_ticket,
612 krb5_creds *out_creds)
615 krb5_addresses addresses, *addrs = &addresses;
617 krb5_get_all_client_addrs(context, &addresses);
618 /* XXX this sucks. */
619 if(addresses.len == 0)
621 ret = get_cred_kdc(context, id, flags, addrs,
622 in_creds, krbtgt, impersonate_principal, second_ticket,
624 krb5_free_addresses(context, &addresses);
628 krb5_error_code KRB5_LIB_FUNCTION
629 krb5_get_kdc_cred(krb5_context context,
631 krb5_kdc_flags flags,
632 krb5_addresses *addresses,
633 Ticket *second_ticket,
634 krb5_creds *in_creds,
635 krb5_creds **out_creds
641 *out_creds = calloc(1, sizeof(**out_creds));
642 if(*out_creds == NULL) {
643 krb5_set_error_string(context, "malloc: out of memory");
646 ret = _krb5_get_krbtgt (context,
648 in_creds->server->realm,
654 ret = get_cred_kdc(context, id, flags, addresses,
655 in_creds, krbtgt, NULL, NULL, *out_creds);
656 krb5_free_creds (context, krbtgt);
663 not_found(krb5_context context, krb5_const_principal p)
668 ret = krb5_unparse_name(context, p, &str);
670 krb5_clear_error_string(context);
673 krb5_set_error_string(context, "Matching credential (%s) not found", str);
677 static krb5_error_code
678 find_cred(krb5_context context,
680 krb5_principal server,
682 krb5_creds *out_creds)
687 krb5_cc_clear_mcred(&mcreds);
688 mcreds.server = server;
689 ret = krb5_cc_retrieve_cred(context, id, KRB5_TC_DONT_MATCH_REALM,
693 while(tgts && *tgts){
694 if(krb5_compare_creds(context, KRB5_TC_DONT_MATCH_REALM,
696 ret = krb5_copy_creds_contents(context, *tgts, out_creds);
701 not_found(context, server);
702 return KRB5_CC_NOTFOUND;
705 static krb5_error_code
706 add_cred(krb5_context context, krb5_creds ***tgts, krb5_creds *tkt)
710 krb5_creds **tmp = *tgts;
712 for(i = 0; tmp && tmp[i]; i++); /* XXX */
713 tmp = realloc(tmp, (i+2)*sizeof(*tmp));
715 krb5_set_error_string(context, "malloc: out of memory");
719 ret = krb5_copy_creds(context, tkt, &tmp[i]);
726 creds = cc_get_cred(server)
727 if(creds) return creds
728 tgt = cc_get_cred(krbtgt/server_realm@any_realm)
730 return get_cred_tgt(server, tgt)
731 if(client_realm == server_realm)
733 tgt = get_cred(krbtgt/server_realm@client_realm)
734 while(tgt_inst != server_realm)
735 tgt = get_cred(krbtgt/server_realm@tgt_inst)
736 return get_cred_tgt(server, tgt)
739 static krb5_error_code
740 get_cred_from_kdc_flags(krb5_context context,
741 krb5_kdc_flags flags,
743 krb5_creds *in_creds,
744 krb5_principal impersonate_principal,
745 Ticket *second_ticket,
746 krb5_creds **out_creds,
747 krb5_creds ***ret_tgts)
750 krb5_creds *tgt, tmp_creds;
751 krb5_const_realm client_realm, server_realm, try_realm;
755 client_realm = krb5_principal_get_realm(context, in_creds->client);
756 server_realm = krb5_principal_get_realm(context, in_creds->server);
757 memset(&tmp_creds, 0, sizeof(tmp_creds));
758 ret = krb5_copy_principal(context, in_creds->client, &tmp_creds.client);
762 try_realm = krb5_config_get_string(context, NULL, "capaths",
763 client_realm, server_realm, NULL);
766 /* XXX remove in future release */
767 if(try_realm == NULL)
768 try_realm = krb5_config_get_string(context, NULL, "libdefaults",
769 "capath", server_realm, NULL);
772 if (try_realm == NULL)
773 try_realm = client_realm;
775 ret = krb5_make_principal(context,
782 krb5_free_principal(context, tmp_creds.client);
787 /* XXX try krb5_cc_retrieve_cred first? */
788 ret = find_cred(context, ccache, tmp_creds.server,
791 *out_creds = calloc(1, sizeof(**out_creds));
792 if(*out_creds == NULL) {
793 krb5_set_error_string(context, "malloc: out of memory");
798 krb5_appdefault_boolean(context, NULL, tgts.server->realm,
799 "no-addresses", FALSE, &noaddr);
802 ret = get_cred_kdc(context, ccache, flags, NULL,
804 impersonate_principal,
808 ret = get_cred_kdc_la(context, ccache, flags,
810 impersonate_principal,
818 krb5_free_cred_contents(context, &tgts);
819 krb5_free_principal(context, tmp_creds.server);
820 krb5_free_principal(context, tmp_creds.client);
824 if(krb5_realm_compare(context, in_creds->client, in_creds->server)) {
825 not_found(context, in_creds->server);
826 return KRB5_CC_NOTFOUND;
828 /* XXX this can loop forever */
830 heim_general_string tgt_inst;
832 ret = get_cred_from_kdc_flags(context, flags, ccache, &tmp_creds,
833 NULL, NULL, &tgt, ret_tgts);
835 krb5_free_principal(context, tmp_creds.server);
836 krb5_free_principal(context, tmp_creds.client);
839 ret = add_cred(context, ret_tgts, tgt);
841 krb5_free_principal(context, tmp_creds.server);
842 krb5_free_principal(context, tmp_creds.client);
845 tgt_inst = tgt->server->name.name_string.val[1];
846 if(strcmp(tgt_inst, server_realm) == 0)
848 krb5_free_principal(context, tmp_creds.server);
849 ret = krb5_make_principal(context, &tmp_creds.server,
850 tgt_inst, KRB5_TGS_NAME, server_realm, NULL);
852 krb5_free_principal(context, tmp_creds.server);
853 krb5_free_principal(context, tmp_creds.client);
856 ret = krb5_free_creds(context, tgt);
858 krb5_free_principal(context, tmp_creds.server);
859 krb5_free_principal(context, tmp_creds.client);
864 krb5_free_principal(context, tmp_creds.server);
865 krb5_free_principal(context, tmp_creds.client);
866 *out_creds = calloc(1, sizeof(**out_creds));
867 if(*out_creds == NULL) {
868 krb5_set_error_string(context, "malloc: out of memory");
873 krb5_appdefault_boolean(context, NULL, tgt->server->realm,
874 "no-addresses", KRB5_ADDRESSLESS_DEFAULT,
877 ret = get_cred_kdc (context, ccache, flags, NULL,
878 in_creds, tgt, NULL, NULL,
881 ret = get_cred_kdc_la(context, ccache, flags,
882 in_creds, tgt, NULL, NULL,
889 krb5_free_creds(context, tgt);
893 krb5_error_code KRB5_LIB_FUNCTION
894 krb5_get_cred_from_kdc_opt(krb5_context context,
896 krb5_creds *in_creds,
897 krb5_creds **out_creds,
898 krb5_creds ***ret_tgts,
903 return get_cred_from_kdc_flags(context, f, ccache,
904 in_creds, NULL, NULL,
905 out_creds, ret_tgts);
908 krb5_error_code KRB5_LIB_FUNCTION
909 krb5_get_cred_from_kdc(krb5_context context,
911 krb5_creds *in_creds,
912 krb5_creds **out_creds,
913 krb5_creds ***ret_tgts)
915 return krb5_get_cred_from_kdc_opt(context, ccache,
916 in_creds, out_creds, ret_tgts, 0);
920 krb5_error_code KRB5_LIB_FUNCTION
921 krb5_get_credentials_with_flags(krb5_context context,
923 krb5_kdc_flags flags,
925 krb5_creds *in_creds,
926 krb5_creds **out_creds)
930 krb5_creds *res_creds;
934 res_creds = calloc(1, sizeof(*res_creds));
935 if (res_creds == NULL) {
936 krb5_set_error_string(context, "malloc: out of memory");
940 if (in_creds->session.keytype)
941 options |= KRB5_TC_MATCH_KEYTYPE;
944 * If we got a credential, check if credential is expired before
947 ret = krb5_cc_retrieve_cred(context,
949 in_creds->session.keytype ?
950 KRB5_TC_MATCH_KEYTYPE : 0,
951 in_creds, res_creds);
953 * If we got a credential, check if credential is expired before
954 * returning it, but only if KRB5_GC_EXPIRED_OK is not set.
957 krb5_timestamp timeret;
959 /* If expired ok, don't bother checking */
960 if(options & KRB5_GC_EXPIRED_OK) {
961 *out_creds = res_creds;
965 krb5_timeofday(context, &timeret);
966 if(res_creds->times.endtime > timeret) {
967 *out_creds = res_creds;
970 if(options & KRB5_GC_CACHED)
971 krb5_cc_remove_cred(context, ccache, 0, res_creds);
973 } else if(ret != KRB5_CC_END) {
978 if(options & KRB5_GC_CACHED) {
979 not_found(context, in_creds->server);
980 return KRB5_CC_NOTFOUND;
982 if(options & KRB5_GC_USER_USER)
983 flags.b.enc_tkt_in_skey = 1;
984 if (flags.b.enc_tkt_in_skey)
985 options |= KRB5_GC_NO_STORE;
988 ret = get_cred_from_kdc_flags(context, flags, ccache,
989 in_creds, NULL, NULL, out_creds, &tgts);
990 for(i = 0; tgts && tgts[i]; i++) {
991 krb5_cc_store_cred(context, ccache, tgts[i]);
992 krb5_free_creds(context, tgts[i]);
995 if(ret == 0 && (options & KRB5_GC_NO_STORE) == 0)
996 krb5_cc_store_cred(context, ccache, *out_creds);
1000 krb5_error_code KRB5_LIB_FUNCTION
1001 krb5_get_credentials(krb5_context context,
1004 krb5_creds *in_creds,
1005 krb5_creds **out_creds)
1007 krb5_kdc_flags flags;
1009 return krb5_get_credentials_with_flags(context, options, flags,
1010 ccache, in_creds, out_creds);
1013 struct krb5_get_creds_opt_data {
1014 krb5_principal self;
1016 krb5_enctype enctype;
1021 krb5_error_code KRB5_LIB_FUNCTION
1022 krb5_get_creds_opt_alloc(krb5_context context, krb5_get_creds_opt *opt)
1024 *opt = calloc(1, sizeof(**opt));
1026 krb5_set_error_string(context, "malloc: out of memory");
1032 void KRB5_LIB_FUNCTION
1033 krb5_get_creds_opt_free(krb5_context context, krb5_get_creds_opt opt)
1036 krb5_free_principal(context, opt->self);
1037 memset(opt, 0, sizeof(*opt));
1041 void KRB5_LIB_FUNCTION
1042 krb5_get_creds_opt_set_options(krb5_context context,
1043 krb5_get_creds_opt opt,
1046 opt->options = options;
1049 void KRB5_LIB_FUNCTION
1050 krb5_get_creds_opt_add_options(krb5_context context,
1051 krb5_get_creds_opt opt,
1054 opt->options |= options;
1057 void KRB5_LIB_FUNCTION
1058 krb5_get_creds_opt_set_enctype(krb5_context context,
1059 krb5_get_creds_opt opt,
1060 krb5_enctype enctype)
1062 opt->enctype = enctype;
1065 krb5_error_code KRB5_LIB_FUNCTION
1066 krb5_get_creds_opt_set_impersonate(krb5_context context,
1067 krb5_get_creds_opt opt,
1068 krb5_const_principal self)
1071 krb5_free_principal(context, opt->self);
1072 return krb5_copy_principal(context, self, &opt->self);
1075 krb5_error_code KRB5_LIB_FUNCTION
1076 krb5_get_creds_opt_set_ticket(krb5_context context,
1077 krb5_get_creds_opt opt,
1078 const Ticket *ticket)
1081 free_Ticket(opt->ticket);
1086 krb5_error_code ret;
1088 opt->ticket = malloc(sizeof(*ticket));
1089 if (opt->ticket == NULL) {
1090 krb5_set_error_string(context, "malloc: out of memory");
1093 ret = copy_Ticket(ticket, opt->ticket);
1097 krb5_set_error_string(context, "malloc: out of memory");
1106 krb5_error_code KRB5_LIB_FUNCTION
1107 krb5_get_creds(krb5_context context,
1108 krb5_get_creds_opt opt,
1110 krb5_const_principal inprinc,
1111 krb5_creds **out_creds)
1113 krb5_kdc_flags flags;
1115 krb5_creds in_creds;
1116 krb5_error_code ret;
1118 krb5_creds *res_creds;
1121 memset(&in_creds, 0, sizeof(in_creds));
1122 in_creds.server = rk_UNCONST(inprinc);
1124 ret = krb5_cc_get_principal(context, ccache, &in_creds.client);
1128 options = opt->options;
1132 res_creds = calloc(1, sizeof(*res_creds));
1133 if (res_creds == NULL) {
1134 krb5_free_principal(context, in_creds.client);
1135 krb5_set_error_string(context, "malloc: out of memory");
1140 in_creds.session.keytype = opt->enctype;
1141 options |= KRB5_TC_MATCH_KEYTYPE;
1145 * If we got a credential, check if credential is expired before
1148 ret = krb5_cc_retrieve_cred(context,
1150 opt->enctype ? KRB5_TC_MATCH_KEYTYPE : 0,
1151 &in_creds, res_creds);
1153 * If we got a credential, check if credential is expired before
1154 * returning it, but only if KRB5_GC_EXPIRED_OK is not set.
1157 krb5_timestamp timeret;
1159 /* If expired ok, don't bother checking */
1160 if(options & KRB5_GC_EXPIRED_OK) {
1161 *out_creds = res_creds;
1162 krb5_free_principal(context, in_creds.client);
1166 krb5_timeofday(context, &timeret);
1167 if(res_creds->times.endtime > timeret) {
1168 *out_creds = res_creds;
1169 krb5_free_principal(context, in_creds.client);
1172 if(options & KRB5_GC_CACHED)
1173 krb5_cc_remove_cred(context, ccache, 0, res_creds);
1175 } else if(ret != KRB5_CC_END) {
1177 krb5_free_principal(context, in_creds.client);
1181 if(options & KRB5_GC_CACHED) {
1182 not_found(context, in_creds.server);
1183 krb5_free_principal(context, in_creds.client);
1184 return KRB5_CC_NOTFOUND;
1186 if(options & KRB5_GC_USER_USER) {
1187 flags.b.enc_tkt_in_skey = 1;
1188 options |= KRB5_GC_NO_STORE;
1190 if (options & KRB5_GC_FORWARDABLE)
1191 flags.b.forwardable = 1;
1192 if (options & KRB5_GC_NO_TRANSIT_CHECK)
1193 flags.b.disable_transited_check = 1;
1196 ret = get_cred_from_kdc_flags(context, flags, ccache,
1197 &in_creds, opt->self, opt->ticket,
1199 krb5_free_principal(context, in_creds.client);
1200 for(i = 0; tgts && tgts[i]; i++) {
1201 krb5_cc_store_cred(context, ccache, tgts[i]);
1202 krb5_free_creds(context, tgts[i]);
1205 if(ret == 0 && (options & KRB5_GC_NO_STORE) == 0)
1206 krb5_cc_store_cred(context, ccache, *out_creds);