/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- make_pa_tgs_req
- set_auth_data
- init_tgs_req
- _krb5_get_krbtgt
- decrypt_tkt_with_subkey
- get_cred_kdc
- get_cred_kdc_address
- krb5_get_kdc_cred
- not_found
- find_cred
- add_cred
- get_cred_kdc_capath
- get_cred_kdc_referral
- get_cred_kdc_any
- krb5_get_cred_from_kdc_opt
- krb5_get_cred_from_kdc
- krb5_get_credentials_with_flags
- krb5_get_credentials
- krb5_get_creds_opt_alloc
- krb5_get_creds_opt_free
- krb5_get_creds_opt_set_options
- krb5_get_creds_opt_add_options
- krb5_get_creds_opt_set_enctype
- krb5_get_creds_opt_set_impersonate
- krb5_get_creds_opt_set_ticket
- krb5_get_creds
- krb5_get_renewed_creds
1 /*
2 * Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
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.
16 *
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.
20 *
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
31 * SUCH DAMAGE.
32 */
33
34 #include <krb5_locl.h>
35
36 RCSID("$Id$");
37
38 /*
39 * Take the `body' and encode it into `padata' using the credentials
40 * in `creds'.
41 */
42
43 static krb5_error_code
44 make_pa_tgs_req(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
45 krb5_auth_context ac,
46 KDC_REQ_BODY *body,
47 PA_DATA *padata,
48 krb5_creds *creds)
49 {
50 u_char *buf;
51 size_t buf_size;
52 size_t len;
53 krb5_data in_data;
54 krb5_error_code ret;
55
56 ASN1_MALLOC_ENCODE(KDC_REQ_BODY, buf, buf_size, body, &len, ret);
57 if (ret)
58 goto out;
59 if(buf_size != len)
60 krb5_abortx(context, "internal error in ASN.1 encoder");
61
62 in_data.length = len;
63 in_data.data = buf;
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);
68 out:
69 free (buf);
70 if(ret)
71 return ret;
72 padata->padata_type = KRB5_PADATA_TGS_REQ;
73 return 0;
74 }
75
76 /*
77 * Set the `enc-authorization-data' in `req_body' based on `authdata'
78 */
79
80 static krb5_error_code
81 set_auth_data (krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
82 KDC_REQ_BODY *req_body,
83 krb5_authdata *authdata,
84 krb5_keyblock *key)
85 {
86 if(authdata->len) {
87 size_t len, buf_size;
88 unsigned char *buf;
89 krb5_crypto crypto;
90 krb5_error_code ret;
91
92 ASN1_MALLOC_ENCODE(AuthorizationData, buf, buf_size, authdata,
93 &len, ret);
94 if (ret)
95 return ret;
96 if (buf_size != len)
97 krb5_abortx(context, "internal error in ASN.1 encoder");
98
99 ALLOC(req_body->enc_authorization_data, 1);
100 if (req_body->enc_authorization_data == NULL) {
101 free (buf);
102 krb5_set_error_message(context, ENOMEM,
103 N_("malloc: out of memory", ""));
104 return ENOMEM;
105 }
106 ret = krb5_crypto_init(context, key, 0, &crypto);
107 if (ret) {
108 free (buf);
109 free (req_body->enc_authorization_data);
110 req_body->enc_authorization_data = NULL;
111 return ret;
112 }
113 krb5_encrypt_EncryptedData(context,
114 crypto,
115 KRB5_KU_TGS_REQ_AUTH_DAT_SUBKEY,
116 /* KRB5_KU_TGS_REQ_AUTH_DAT_SESSION? */
117 buf,
118 len,
119 0,
120 req_body->enc_authorization_data);
121 free (buf);
122 krb5_crypto_destroy(context, crypto);
123 } else {
124 req_body->enc_authorization_data = NULL;
125 }
126 return 0;
127 }
128
129 /*
130 * Create a tgs-req in `t' with `addresses', `flags', `second_ticket'
131 * (if not-NULL), `in_creds', `krbtgt', and returning the generated
132 * subkey in `subkey'.
133 */
134
135 static krb5_error_code
136 init_tgs_req (krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
137 krb5_ccache ccache,
138 krb5_addresses *addresses,
139 krb5_kdc_flags flags,
140 Ticket *second_ticket,
141 krb5_creds *in_creds,
142 krb5_creds *krbtgt,
143 unsigned nonce,
144 const METHOD_DATA *padata,
145 krb5_keyblock **subkey,
146 TGS_REQ *t)
147 {
148 krb5_error_code ret = 0;
149
150 memset(t, 0, sizeof(*t));
151 t->pvno = 5;
152 t->msg_type = krb_tgs_req;
153 if (in_creds->session.keytype) {
154 ALLOC_SEQ(&t->req_body.etype, 1);
155 if(t->req_body.etype.val == NULL) {
156 ret = ENOMEM;
157 krb5_set_error_message(context, ret,
158 N_("malloc: out of memory", ""));
159 goto fail;
160 }
161 t->req_body.etype.val[0] = in_creds->session.keytype;
162 } else {
163 ret = krb5_init_etype(context,
164 &t->req_body.etype.len,
165 &t->req_body.etype.val,
166 NULL);
167 }
168 if (ret)
169 goto fail;
170 t->req_body.addresses = addresses;
171 t->req_body.kdc_options = flags.b;
172 ret = copy_Realm(&in_creds->server->realm, &t->req_body.realm);
173 if (ret)
174 goto fail;
175 ALLOC(t->req_body.sname, 1);
176 if (t->req_body.sname == NULL) {
177 ret = ENOMEM;
178 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
179 goto fail;
180 }
181
182 /* some versions of some code might require that the client be
183 present in TGS-REQs, but this is clearly against the spec */
184
185 ret = copy_PrincipalName(&in_creds->server->name, t->req_body.sname);
186 if (ret)
187 goto fail;
188
189 /* req_body.till should be NULL if there is no endtime specified,
190 but old MIT code (like DCE secd) doesn't like that */
191 ALLOC(t->req_body.till, 1);
192 if(t->req_body.till == NULL){
193 ret = ENOMEM;
194 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
195 goto fail;
196 }
197 *t->req_body.till = in_creds->times.endtime;
198
199 t->req_body.nonce = nonce;
200 if(second_ticket){
201 ALLOC(t->req_body.additional_tickets, 1);
202 if (t->req_body.additional_tickets == NULL) {
203 ret = ENOMEM;
204 krb5_set_error_message(context, ret,
205 N_("malloc: out of memory", ""));
206 goto fail;
207 }
208 ALLOC_SEQ(t->req_body.additional_tickets, 1);
209 if (t->req_body.additional_tickets->val == NULL) {
210 ret = ENOMEM;
211 krb5_set_error_message(context, ret,
212 N_("malloc: out of memory", ""));
213 goto fail;
214 }
215 ret = copy_Ticket(second_ticket, t->req_body.additional_tickets->val);
216 if (ret)
217 goto fail;
218 }
219 ALLOC(t->padata, 1);
220 if (t->padata == NULL) {
221 ret = ENOMEM;
222 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
223 goto fail;
224 }
225 ALLOC_SEQ(t->padata, 1 + padata->len);
226 if (t->padata->val == NULL) {
227 ret = ENOMEM;
228 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
229 goto fail;
230 }
231 {
232 int i;
233 for (i = 0; i < padata->len; i++) {
234 ret = copy_PA_DATA(&padata->val[i], &t->padata->val[i + 1]);
235 if (ret) {
236 krb5_set_error_message(context, ret,
237 N_("malloc: out of memory", ""));
238 goto fail;
239 }
240 }
241 }
242
243 {
244 krb5_auth_context ac;
245 krb5_keyblock *key = NULL;
246
247 ret = krb5_auth_con_init(context, &ac);
248 if(ret)
249 goto fail;
250
251 if (krb5_config_get_bool_default(context, NULL, FALSE,
252 "realms",
253 krbtgt->server->realm,
254 "tgs_require_subkey",
255 NULL))
256 {
257 ret = krb5_generate_subkey (context, &krbtgt->session, &key);
258 if (ret) {
259 krb5_auth_con_free (context, ac);
260 goto fail;
261 }
262
263 ret = krb5_auth_con_setlocalsubkey(context, ac, key);
264 if (ret) {
265 if (key)
266 krb5_free_keyblock (context, key);
267 krb5_auth_con_free (context, ac);
268 goto fail;
269 }
270 }
271
272 ret = set_auth_data (context, &t->req_body, &in_creds->authdata,
273 key ? key : &krbtgt->session);
274 if (ret) {
275 if (key)
276 krb5_free_keyblock (context, key);
277 krb5_auth_con_free (context, ac);
278 goto fail;
279 }
280
281 ret = make_pa_tgs_req(context,
282 ac,
283 &t->req_body,
284 &t->padata->val[0],
285 krbtgt);
286 if(ret) {
287 if (key)
288 krb5_free_keyblock (context, key);
289 krb5_auth_con_free(context, ac);
290 goto fail;
291 }
292 *subkey = key;
293
294 krb5_auth_con_free(context, ac);
295 }
296 fail:
297 if (ret) {
298 t->req_body.addresses = NULL;
299 free_TGS_REQ (t);
300 }
301 return ret;
302 }
303
304 krb5_error_code
305 _krb5_get_krbtgt(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
306 krb5_ccache id,
307 krb5_realm realm,
308 krb5_creds **cred)
309 {
310 krb5_error_code ret;
311 krb5_creds tmp_cred;
312
313 memset(&tmp_cred, 0, sizeof(tmp_cred));
314
315 ret = krb5_cc_get_principal(context, id, &tmp_cred.client);
316 if (ret)
317 return ret;
318
319 ret = krb5_make_principal(context,
320 &tmp_cred.server,
321 realm,
322 KRB5_TGS_NAME,
323 realm,
324 NULL);
325 if(ret) {
326 krb5_free_principal(context, tmp_cred.client);
327 return ret;
328 }
329 ret = krb5_get_credentials(context,
330 KRB5_GC_CACHED,
331 id,
332 &tmp_cred,
333 cred);
334 krb5_free_principal(context, tmp_cred.client);
335 krb5_free_principal(context, tmp_cred.server);
336 if(ret)
337 return ret;
338 return 0;
339 }
340
341 /* DCE compatible decrypt proc */
342 static krb5_error_code
343 decrypt_tkt_with_subkey (krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
344 krb5_keyblock *key,
345 krb5_key_usage usage,
346 krb5_const_pointer subkey,
347 krb5_kdc_rep *dec_rep)
348 {
349 krb5_error_code ret;
350 krb5_data data;
351 size_t size;
352 krb5_crypto crypto;
353
354 ret = krb5_crypto_init(context, key, 0, &crypto);
355 if (ret)
356 return ret;
357 ret = krb5_decrypt_EncryptedData (context,
358 crypto,
359 usage,
360 &dec_rep->kdc_rep.enc_part,
361 &data);
362 krb5_crypto_destroy(context, crypto);
363 if(ret && subkey){
364 /* DCE compat -- try to decrypt with subkey */
365 ret = krb5_crypto_init(context, subkey, 0, &crypto);
366 if (ret)
367 return ret;
368 ret = krb5_decrypt_EncryptedData (context,
369 crypto,
370 KRB5_KU_TGS_REP_ENC_PART_SUB_KEY,
371 &dec_rep->kdc_rep.enc_part,
372 &data);
373 krb5_crypto_destroy(context, crypto);
374 }
375 if (ret)
376 return ret;
377
378 ret = krb5_decode_EncASRepPart(context,
379 data.data,
380 data.length,
381 &dec_rep->enc_part,
382 &size);
383 if (ret)
384 ret = krb5_decode_EncTGSRepPart(context,
385 data.data,
386 data.length,
387 &dec_rep->enc_part,
388 &size);
389 krb5_data_free (&data);
390 return ret;
391 }
392
393 static krb5_error_code
394 get_cred_kdc(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
395 krb5_ccache id,
396 krb5_kdc_flags flags,
397 krb5_addresses *addresses,
398 krb5_creds *in_creds,
399 krb5_creds *krbtgt,
400 krb5_principal impersonate_principal,
401 Ticket *second_ticket,
402 krb5_creds *out_creds)
403 {
404 TGS_REQ req;
405 krb5_data enc;
406 krb5_data resp;
407 krb5_kdc_rep rep;
408 KRB_ERROR error;
409 krb5_error_code ret;
410 unsigned nonce;
411 krb5_keyblock *subkey = NULL;
412 size_t len;
413 Ticket second_ticket_data;
414 METHOD_DATA padata;
415
416 krb5_data_zero(&resp);
417 krb5_data_zero(&enc);
418 padata.val = NULL;
419 padata.len = 0;
420
421 krb5_generate_random_block(&nonce, sizeof(nonce));
422 nonce &= 0xffffffff;
423
424 if(flags.b.enc_tkt_in_skey && second_ticket == NULL){
425 ret = decode_Ticket(in_creds->second_ticket.data,
426 in_creds->second_ticket.length,
427 &second_ticket_data, &len);
428 if(ret)
429 return ret;
430 second_ticket = &second_ticket_data;
431 }
432
433
434 if (impersonate_principal) {
435 krb5_crypto crypto;
436 PA_S4U2Self self;
437 krb5_data data;
438 void *buf;
439 size_t size;
440
441 self.name = impersonate_principal->name;
442 self.realm = impersonate_principal->realm;
443 self.auth = estrdup("Kerberos");
444
445 ret = _krb5_s4u2self_to_checksumdata(context, &self, &data);
446 if (ret) {
447 free(self.auth);
448 goto out;
449 }
450
451 ret = krb5_crypto_init(context, &krbtgt->session, 0, &crypto);
452 if (ret) {
453 free(self.auth);
454 krb5_data_free(&data);
455 goto out;
456 }
457
458 ret = krb5_create_checksum(context,
459 crypto,
460 KRB5_KU_OTHER_CKSUM,
461 0,
462 data.data,
463 data.length,
464 &self.cksum);
465 krb5_crypto_destroy(context, crypto);
466 krb5_data_free(&data);
467 if (ret) {
468 free(self.auth);
469 goto out;
470 }
471
472 ASN1_MALLOC_ENCODE(PA_S4U2Self, buf, len, &self, &size, ret);
473 free(self.auth);
474 free_Checksum(&self.cksum);
475 if (ret)
476 goto out;
477 if (len != size)
478 krb5_abortx(context, "internal asn1 error");
479
480 ret = krb5_padata_add(context, &padata, KRB5_PADATA_S4U2SELF, buf, len);
481 if (ret)
482 goto out;
483 }
484
485 ret = init_tgs_req (context,
486 id,
487 addresses,
488 flags,
489 second_ticket,
490 in_creds,
491 krbtgt,
492 nonce,
493 &padata,
494 &subkey,
495 &req);
496 if (ret)
497 goto out;
498
499 ASN1_MALLOC_ENCODE(TGS_REQ, enc.data, enc.length, &req, &len, ret);
500 if (ret)
501 goto out;
502 if(enc.length != len)
503 krb5_abortx(context, "internal error in ASN.1 encoder");
504
505 /* don't free addresses */
506 req.req_body.addresses = NULL;
507 free_TGS_REQ(&req);
508
509 /*
510 * Send and receive
511 */
512 {
513 krb5_sendto_ctx stctx;
514 ret = krb5_sendto_ctx_alloc(context, &stctx);
515 if (ret)
516 return ret;
517 krb5_sendto_ctx_set_func(stctx, _krb5_kdc_retry, NULL);
518
519 ret = krb5_sendto_context (context, stctx, &enc,
520 krbtgt->server->name.name_string.val[1],
521 &resp);
522 krb5_sendto_ctx_free(context, stctx);
523 }
524 if(ret)
525 goto out;
526
527 memset(&rep, 0, sizeof(rep));
528 if(decode_TGS_REP(resp.data, resp.length, &rep.kdc_rep, &len) == 0) {
529 unsigned eflags = 0;
530
531 ret = krb5_copy_principal(context,
532 in_creds->client,
533 &out_creds->client);
534 if(ret)
535 goto out2;
536 ret = krb5_copy_principal(context,
537 in_creds->server,
538 &out_creds->server);
539 if(ret)
540 goto out2;
541 /* this should go someplace else */
542 out_creds->times.endtime = in_creds->times.endtime;
543
544 /* XXX should do better testing */
545 if (flags.b.constrained_delegation || impersonate_principal)
546 eflags |= EXTRACT_TICKET_ALLOW_CNAME_MISMATCH;
547
548 ret = _krb5_extract_ticket(context,
549 &rep,
550 out_creds,
551 &krbtgt->session,
552 NULL,
553 KRB5_KU_TGS_REP_ENC_PART_SESSION,
554 &krbtgt->addresses,
555 nonce,
556 eflags,
557 decrypt_tkt_with_subkey,
558 subkey);
559 out2:
560 krb5_free_kdc_rep(context, &rep);
561 } else if(krb5_rd_error(context, &resp, &error) == 0) {
562 ret = krb5_error_from_rd_error(context, &error, in_creds);
563 krb5_free_error_contents(context, &error);
564 } else if(resp.data && ((char*)resp.data)[0] == 4) {
565 ret = KRB5KRB_AP_ERR_V4_REPLY;
566 krb5_clear_error_message(context);
567 } else {
568 ret = KRB5KRB_AP_ERR_MSG_TYPE;
569 krb5_clear_error_message(context);
570 }
571
572 out:
573 if (second_ticket == &second_ticket_data)
574 free_Ticket(&second_ticket_data);
575 free_METHOD_DATA(&padata);
576 krb5_data_free(&resp);
577 krb5_data_free(&enc);
578 if(subkey){
579 krb5_free_keyblock_contents(context, subkey);
580 free(subkey);
581 }
582 return ret;
583
584 }
585
586 /*
587 * same as above, just get local addresses first if the krbtgt have
588 * them and the realm is not addressless
589 */
590
591 static krb5_error_code
592 get_cred_kdc_address(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
593 krb5_ccache id,
594 krb5_kdc_flags flags,
595 krb5_addresses *addrs,
596 krb5_creds *in_creds,
597 krb5_creds *krbtgt,
598 krb5_principal impersonate_principal,
599 Ticket *second_ticket,
600 krb5_creds *out_creds)
601 {
602 krb5_error_code ret;
603 krb5_addresses addresses = { 0, NULL };
604
605 /*
606 * Inherit the address-ness of the krbtgt if the address is not
607 * specified.
608 */
609
610 if (addrs == NULL && krbtgt->addresses.len != 0) {
611 krb5_boolean noaddr;
612
613 krb5_appdefault_boolean(context, NULL, krbtgt->server->realm,
614 "no-addresses", FALSE, &noaddr);
615
616 if (!noaddr) {
617 krb5_get_all_client_addrs(context, &addresses);
618 /* XXX this sucks. */
619 addrs = &addresses;
620 if(addresses.len == 0)
621 addrs = NULL;
622 }
623 }
624 ret = get_cred_kdc(context, id, flags, addrs, in_creds,
625 krbtgt, impersonate_principal,
626 second_ticket, out_creds);
627 krb5_free_addresses(context, &addresses);
628 return ret;
629 }
630
631 krb5_error_code KRB5_LIB_FUNCTION
632 krb5_get_kdc_cred(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
633 krb5_ccache id,
634 krb5_kdc_flags flags,
635 krb5_addresses *addresses,
636 Ticket *second_ticket,
637 krb5_creds *in_creds,
638 krb5_creds **out_creds
639 )
640 {
641 krb5_error_code ret;
642 krb5_creds *krbtgt;
643
644 *out_creds = calloc(1, sizeof(**out_creds));
645 if(*out_creds == NULL) {
646 krb5_set_error_message(context, ENOMEM,
647 N_("malloc: out of memory", ""));
648 return ENOMEM;
649 }
650 ret = _krb5_get_krbtgt (context,
651 id,
652 in_creds->server->realm,
653 &krbtgt);
654 if(ret) {
655 free(*out_creds);
656 return ret;
657 }
658 ret = get_cred_kdc(context, id, flags, addresses,
659 in_creds, krbtgt, NULL, NULL, *out_creds);
660 krb5_free_creds (context, krbtgt);
661 if(ret)
662 free(*out_creds);
663 return ret;
664 }
665
666 static int
667 not_found(krb5_context context, krb5_const_principal p, krb5_error_code code)
/* [<][>][^][v][top][bottom][index][help] */
668 {
669 krb5_error_code ret;
670 char *str;
671
672 ret = krb5_unparse_name(context, p, &str);
673 if(ret) {
674 krb5_clear_error_message(context);
675 return code;
676 }
677 krb5_set_error_message(context, code,
678 N_("Matching credential (%s) not found", ""), str);
679 free(str);
680 return code;
681 }
682
683 static krb5_error_code
684 find_cred(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
685 krb5_ccache id,
686 krb5_principal server,
687 krb5_creds **tgts,
688 krb5_creds *out_creds)
689 {
690 krb5_error_code ret;
691 krb5_creds mcreds;
692
693 krb5_cc_clear_mcred(&mcreds);
694 mcreds.server = server;
695 ret = krb5_cc_retrieve_cred(context, id, KRB5_TC_DONT_MATCH_REALM,
696 &mcreds, out_creds);
697 if(ret == 0)
698 return 0;
699 while(tgts && *tgts){
700 if(krb5_compare_creds(context, KRB5_TC_DONT_MATCH_REALM,
701 &mcreds, *tgts)){
702 ret = krb5_copy_creds_contents(context, *tgts, out_creds);
703 return ret;
704 }
705 tgts++;
706 }
707 return not_found(context, server, KRB5_CC_NOTFOUND);
708 }
709
710 static krb5_error_code
711 add_cred(krb5_context context, krb5_creds const *tkt, krb5_creds ***tgts)
/* [<][>][^][v][top][bottom][index][help] */
712 {
713 int i;
714 krb5_error_code ret;
715 krb5_creds **tmp = *tgts;
716
717 for(i = 0; tmp && tmp[i]; i++); /* XXX */
718 tmp = realloc(tmp, (i+2)*sizeof(*tmp));
719 if(tmp == NULL) {
720 krb5_set_error_message(context, ENOMEM,
721 N_("malloc: out of memory", ""));
722 return ENOMEM;
723 }
724 *tgts = tmp;
725 ret = krb5_copy_creds(context, tkt, &tmp[i]);
726 tmp[i+1] = NULL;
727 return ret;
728 }
729
730 /*
731 get_cred(server)
732 creds = cc_get_cred(server)
733 if(creds) return creds
734 tgt = cc_get_cred(krbtgt/server_realm@any_realm)
735 if(tgt)
736 return get_cred_tgt(server, tgt)
737 if(client_realm == server_realm)
738 return NULL
739 tgt = get_cred(krbtgt/server_realm@client_realm)
740 while(tgt_inst != server_realm)
741 tgt = get_cred(krbtgt/server_realm@tgt_inst)
742 return get_cred_tgt(server, tgt)
743 */
744
745 static krb5_error_code
746 get_cred_kdc_capath(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
747 krb5_kdc_flags flags,
748 krb5_ccache ccache,
749 krb5_creds *in_creds,
750 krb5_principal impersonate_principal,
751 Ticket *second_ticket,
752 krb5_creds **out_creds,
753 krb5_creds ***ret_tgts)
754 {
755 krb5_error_code ret;
756 krb5_creds *tgt, tmp_creds;
757 krb5_const_realm client_realm, server_realm, try_realm;
758 int ok_as_delegate = 1;
759
760 *out_creds = NULL;
761
762 client_realm = krb5_principal_get_realm(context, in_creds->client);
763 server_realm = krb5_principal_get_realm(context, in_creds->server);
764 memset(&tmp_creds, 0, sizeof(tmp_creds));
765 ret = krb5_copy_principal(context, in_creds->client, &tmp_creds.client);
766 if(ret)
767 return ret;
768
769 try_realm = krb5_config_get_string(context, NULL, "capaths",
770 client_realm, server_realm, NULL);
771 if (try_realm == NULL)
772 try_realm = client_realm;
773
774 ret = krb5_make_principal(context,
775 &tmp_creds.server,
776 try_realm,
777 KRB5_TGS_NAME,
778 server_realm,
779 NULL);
780 if(ret){
781 krb5_free_principal(context, tmp_creds.client);
782 return ret;
783 }
784 {
785 krb5_creds tgts;
786
787 ret = find_cred(context, ccache, tmp_creds.server,
788 *ret_tgts, &tgts);
789 if(ret == 0){
790 if (try_realm != client_realm)
791 ok_as_delegate = tgts.flags.b.ok_as_delegate;
792
793 *out_creds = calloc(1, sizeof(**out_creds));
794 if(*out_creds == NULL) {
795 ret = ENOMEM;
796 krb5_set_error_message(context, ret,
797 N_("malloc: out of memory", ""));
798 } else {
799 ret = get_cred_kdc_address(context, ccache, flags, NULL,
800 in_creds, &tgts,
801 impersonate_principal,
802 second_ticket,
803 *out_creds);
804 if (ret) {
805 free (*out_creds);
806 *out_creds = NULL;
807 } else if (ok_as_delegate == 0)
808 (*out_creds)->flags.b.ok_as_delegate = 0;
809 }
810 krb5_free_cred_contents(context, &tgts);
811 krb5_free_principal(context, tmp_creds.server);
812 krb5_free_principal(context, tmp_creds.client);
813 return ret;
814 }
815 }
816 if(krb5_realm_compare(context, in_creds->client, in_creds->server))
817 return not_found(context, in_creds->server, KRB5_CC_NOTFOUND);
818
819 /* XXX this can loop forever */
820 while(1){
821 heim_general_string tgt_inst;
822
823 ret = get_cred_kdc_capath(context, flags, ccache, &tmp_creds,
824 NULL, NULL, &tgt, ret_tgts);
825 if(ret) {
826 krb5_free_principal(context, tmp_creds.server);
827 krb5_free_principal(context, tmp_creds.client);
828 return ret;
829 }
830 /*
831 * if either of the chain or the ok_as_delegate was stripped
832 * by the kdc, make sure we strip it too.
833 */
834 if (ok_as_delegate == 0 || tgt->flags.b.ok_as_delegate == 0) {
835 ok_as_delegate = 0;
836 tgt->flags.b.ok_as_delegate = 0;
837 }
838
839 ret = add_cred(context, tgt, ret_tgts);
840 if(ret) {
841 krb5_free_principal(context, tmp_creds.server);
842 krb5_free_principal(context, tmp_creds.client);
843 return ret;
844 }
845 tgt_inst = tgt->server->name.name_string.val[1];
846 if(strcmp(tgt_inst, server_realm) == 0)
847 break;
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);
851 if(ret) {
852 krb5_free_principal(context, tmp_creds.server);
853 krb5_free_principal(context, tmp_creds.client);
854 return ret;
855 }
856 ret = krb5_free_creds(context, tgt);
857 if(ret) {
858 krb5_free_principal(context, tmp_creds.server);
859 krb5_free_principal(context, tmp_creds.client);
860 return ret;
861 }
862 }
863
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 ret = ENOMEM;
869 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
870 } else {
871 ret = get_cred_kdc_address (context, ccache, flags, NULL,
872 in_creds, tgt, impersonate_principal,
873 second_ticket, *out_creds);
874 if (ret) {
875 free (*out_creds);
876 *out_creds = NULL;
877 }
878 }
879 krb5_free_creds(context, tgt);
880 return ret;
881 }
882
883 static krb5_error_code
884 get_cred_kdc_referral(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
885 krb5_kdc_flags flags,
886 krb5_ccache ccache,
887 krb5_creds *in_creds,
888 krb5_principal impersonate_principal,
889 Ticket *second_ticket,
890 krb5_creds **out_creds,
891 krb5_creds ***ret_tgts)
892 {
893 krb5_const_realm client_realm;
894 krb5_error_code ret;
895 krb5_creds tgt, referral, ticket;
896 int loop = 0;
897 int ok_as_delegate = 1;
898
899 memset(&tgt, 0, sizeof(tgt));
900 memset(&ticket, 0, sizeof(ticket));
901
902 flags.b.canonicalize = 1;
903
904 *out_creds = NULL;
905
906 client_realm = krb5_principal_get_realm(context, in_creds->client);
907
908 /* find tgt for the clients base realm */
909 {
910 krb5_principal tgtname;
911
912 ret = krb5_make_principal(context, &tgtname,
913 client_realm,
914 KRB5_TGS_NAME,
915 client_realm,
916 NULL);
917 if(ret)
918 return ret;
919
920 ret = find_cred(context, ccache, tgtname, *ret_tgts, &tgt);
921 krb5_free_principal(context, tgtname);
922 if (ret)
923 return ret;
924 }
925
926 referral = *in_creds;
927 ret = krb5_copy_principal(context, in_creds->server, &referral.server);
928 if (ret) {
929 krb5_free_cred_contents(context, &tgt);
930 return ret;
931 }
932 ret = krb5_principal_set_realm(context, referral.server, client_realm);
933 if (ret) {
934 krb5_free_cred_contents(context, &tgt);
935 krb5_free_principal(context, referral.server);
936 return ret;
937 }
938
939 while (loop++ < 17) {
940 krb5_creds **tickets;
941 krb5_creds mcreds;
942 char *referral_realm;
943
944 /* Use cache if we are not doing impersonation or contrainte deleg */
945 if (impersonate_principal == NULL || flags.b.constrained_delegation) {
946 krb5_cc_clear_mcred(&mcreds);
947 mcreds.server = referral.server;
948 ret = krb5_cc_retrieve_cred(context, ccache, 0, &mcreds, &ticket);
949 } else
950 ret = EINVAL;
951
952 if (ret) {
953 ret = get_cred_kdc_address (context, ccache, flags, NULL,
954 &referral, &tgt, impersonate_principal,
955 second_ticket, &ticket);
956 if (ret)
957 goto out;
958 }
959
960 /* Did we get the right ticket ? */
961 if (krb5_principal_compare_any_realm(context,
962 referral.server,
963 ticket.server))
964 break;
965
966 if (ticket.server->name.name_string.len != 2 &&
967 strcmp(ticket.server->name.name_string.val[0], KRB5_TGS_NAME) != 0)
968 {
969 krb5_set_error_message(context, KRB5KRB_AP_ERR_NOT_US,
970 N_("Got back an non krbtgt "
971 "ticket referrals", ""));
972 krb5_free_cred_contents(context, &ticket);
973 return KRB5KRB_AP_ERR_NOT_US;
974 }
975
976 referral_realm = ticket.server->name.name_string.val[1];
977
978 /* check that there are no referrals loops */
979 tickets = *ret_tgts;
980
981 krb5_cc_clear_mcred(&mcreds);
982 mcreds.server = ticket.server;
983
984 while(tickets && *tickets){
985 if(krb5_compare_creds(context,
986 KRB5_TC_DONT_MATCH_REALM,
987 &mcreds,
988 *tickets))
989 {
990 krb5_set_error_message(context, KRB5_GET_IN_TKT_LOOP,
991 N_("Referral from %s "
992 "loops back to realm %s", ""),
993 tgt.server->realm,
994 referral_realm);
995 krb5_free_cred_contents(context, &ticket);
996 return KRB5_GET_IN_TKT_LOOP;
997 }
998 tickets++;
999 }
1000
1001 /*
1002 * if either of the chain or the ok_as_delegate was stripped
1003 * by the kdc, make sure we strip it too.
1004 */
1005
1006 if (ok_as_delegate == 0 || ticket.flags.b.ok_as_delegate == 0) {
1007 ok_as_delegate = 0;
1008 ticket.flags.b.ok_as_delegate = 0;
1009 }
1010
1011 ret = add_cred(context, &ticket, ret_tgts);
1012 if (ret) {
1013 krb5_free_cred_contents(context, &ticket);
1014 goto out;
1015 }
1016
1017 /* try realm in the referral */
1018 ret = krb5_principal_set_realm(context,
1019 referral.server,
1020 referral_realm);
1021 krb5_free_cred_contents(context, &tgt);
1022 tgt = ticket;
1023 memset(&ticket, 0, sizeof(ticket));
1024 if (ret)
1025 goto out;
1026 }
1027
1028 ret = krb5_copy_creds(context, &ticket, out_creds);
1029
1030 out:
1031 krb5_free_principal(context, referral.server);
1032 krb5_free_cred_contents(context, &tgt);
1033 return ret;
1034 }
1035
1036
1037 /*
1038 * Glue function between referrals version and old client chasing
1039 * codebase.
1040 */
1041
1042 static krb5_error_code
1043 get_cred_kdc_any(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1044 krb5_kdc_flags flags,
1045 krb5_ccache ccache,
1046 krb5_creds *in_creds,
1047 krb5_principal impersonate_principal,
1048 Ticket *second_ticket,
1049 krb5_creds **out_creds,
1050 krb5_creds ***ret_tgts)
1051 {
1052 krb5_error_code ret;
1053
1054 ret = get_cred_kdc_referral(context,
1055 flags,
1056 ccache,
1057 in_creds,
1058 impersonate_principal,
1059 second_ticket,
1060 out_creds,
1061 ret_tgts);
1062 if (ret == 0 || flags.b.canonicalize)
1063 return ret;
1064 return get_cred_kdc_capath(context,
1065 flags,
1066 ccache,
1067 in_creds,
1068 impersonate_principal,
1069 second_ticket,
1070 out_creds,
1071 ret_tgts);
1072 }
1073
1074
1075 krb5_error_code KRB5_LIB_FUNCTION
1076 krb5_get_cred_from_kdc_opt(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1077 krb5_ccache ccache,
1078 krb5_creds *in_creds,
1079 krb5_creds **out_creds,
1080 krb5_creds ***ret_tgts,
1081 krb5_flags flags)
1082 {
1083 krb5_kdc_flags f;
1084 f.i = flags;
1085 return get_cred_kdc_any(context, f, ccache,
1086 in_creds, NULL, NULL,
1087 out_creds, ret_tgts);
1088 }
1089
1090 krb5_error_code KRB5_LIB_FUNCTION
1091 krb5_get_cred_from_kdc(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1092 krb5_ccache ccache,
1093 krb5_creds *in_creds,
1094 krb5_creds **out_creds,
1095 krb5_creds ***ret_tgts)
1096 {
1097 return krb5_get_cred_from_kdc_opt(context, ccache,
1098 in_creds, out_creds, ret_tgts, 0);
1099 }
1100
1101
1102 krb5_error_code KRB5_LIB_FUNCTION
1103 krb5_get_credentials_with_flags(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1104 krb5_flags options,
1105 krb5_kdc_flags flags,
1106 krb5_ccache ccache,
1107 krb5_creds *in_creds,
1108 krb5_creds **out_creds)
1109 {
1110 krb5_error_code ret;
1111 krb5_creds **tgts;
1112 krb5_creds *res_creds;
1113 int i;
1114
1115 *out_creds = NULL;
1116 res_creds = calloc(1, sizeof(*res_creds));
1117 if (res_creds == NULL) {
1118 krb5_set_error_message(context, ENOMEM,
1119 N_("malloc: out of memory", ""));
1120 return ENOMEM;
1121 }
1122
1123 if (in_creds->session.keytype)
1124 options |= KRB5_TC_MATCH_KEYTYPE;
1125
1126 /*
1127 * If we got a credential, check if credential is expired before
1128 * returning it.
1129 */
1130 ret = krb5_cc_retrieve_cred(context,
1131 ccache,
1132 in_creds->session.keytype ?
1133 KRB5_TC_MATCH_KEYTYPE : 0,
1134 in_creds, res_creds);
1135 /*
1136 * If we got a credential, check if credential is expired before
1137 * returning it, but only if KRB5_GC_EXPIRED_OK is not set.
1138 */
1139 if (ret == 0) {
1140 krb5_timestamp timeret;
1141
1142 /* If expired ok, don't bother checking */
1143 if(options & KRB5_GC_EXPIRED_OK) {
1144 *out_creds = res_creds;
1145 return 0;
1146 }
1147
1148 krb5_timeofday(context, &timeret);
1149 if(res_creds->times.endtime > timeret) {
1150 *out_creds = res_creds;
1151 return 0;
1152 }
1153 if(options & KRB5_GC_CACHED)
1154 krb5_cc_remove_cred(context, ccache, 0, res_creds);
1155
1156 } else if(ret != KRB5_CC_END) {
1157 free(res_creds);
1158 return ret;
1159 }
1160 free(res_creds);
1161 if(options & KRB5_GC_CACHED)
1162 return not_found(context, in_creds->server, KRB5_CC_NOTFOUND);
1163
1164 if(options & KRB5_GC_USER_USER)
1165 flags.b.enc_tkt_in_skey = 1;
1166 if (flags.b.enc_tkt_in_skey)
1167 options |= KRB5_GC_NO_STORE;
1168
1169 tgts = NULL;
1170 ret = get_cred_kdc_any(context, flags, ccache,
1171 in_creds, NULL, NULL, out_creds, &tgts);
1172 for(i = 0; tgts && tgts[i]; i++) {
1173 krb5_cc_store_cred(context, ccache, tgts[i]);
1174 krb5_free_creds(context, tgts[i]);
1175 }
1176 free(tgts);
1177 if(ret == 0 && (options & KRB5_GC_NO_STORE) == 0)
1178 krb5_cc_store_cred(context, ccache, *out_creds);
1179 return ret;
1180 }
1181
1182 krb5_error_code KRB5_LIB_FUNCTION
1183 krb5_get_credentials(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1184 krb5_flags options,
1185 krb5_ccache ccache,
1186 krb5_creds *in_creds,
1187 krb5_creds **out_creds)
1188 {
1189 krb5_kdc_flags flags;
1190 flags.i = 0;
1191 return krb5_get_credentials_with_flags(context, options, flags,
1192 ccache, in_creds, out_creds);
1193 }
1194
1195 struct krb5_get_creds_opt_data {
1196 krb5_principal self;
1197 krb5_flags options;
1198 krb5_enctype enctype;
1199 Ticket *ticket;
1200 };
1201
1202
1203 krb5_error_code KRB5_LIB_FUNCTION
1204 krb5_get_creds_opt_alloc(krb5_context context, krb5_get_creds_opt *opt)
/* [<][>][^][v][top][bottom][index][help] */
1205 {
1206 *opt = calloc(1, sizeof(**opt));
1207 if (*opt == NULL) {
1208 krb5_set_error_message(context, ENOMEM,
1209 N_("malloc: out of memory", ""));
1210 return ENOMEM;
1211 }
1212 return 0;
1213 }
1214
1215 void KRB5_LIB_FUNCTION
1216 krb5_get_creds_opt_free(krb5_context context, krb5_get_creds_opt opt)
/* [<][>][^][v][top][bottom][index][help] */
1217 {
1218 if (opt->self)
1219 krb5_free_principal(context, opt->self);
1220 memset(opt, 0, sizeof(*opt));
1221 free(opt);
1222 }
1223
1224 void KRB5_LIB_FUNCTION
1225 krb5_get_creds_opt_set_options(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1226 krb5_get_creds_opt opt,
1227 krb5_flags options)
1228 {
1229 opt->options = options;
1230 }
1231
1232 void KRB5_LIB_FUNCTION
1233 krb5_get_creds_opt_add_options(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1234 krb5_get_creds_opt opt,
1235 krb5_flags options)
1236 {
1237 opt->options |= options;
1238 }
1239
1240 void KRB5_LIB_FUNCTION
1241 krb5_get_creds_opt_set_enctype(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1242 krb5_get_creds_opt opt,
1243 krb5_enctype enctype)
1244 {
1245 opt->enctype = enctype;
1246 }
1247
1248 krb5_error_code KRB5_LIB_FUNCTION
1249 krb5_get_creds_opt_set_impersonate(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1250 krb5_get_creds_opt opt,
1251 krb5_const_principal self)
1252 {
1253 if (opt->self)
1254 krb5_free_principal(context, opt->self);
1255 return krb5_copy_principal(context, self, &opt->self);
1256 }
1257
1258 krb5_error_code KRB5_LIB_FUNCTION
1259 krb5_get_creds_opt_set_ticket(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1260 krb5_get_creds_opt opt,
1261 const Ticket *ticket)
1262 {
1263 if (opt->ticket) {
1264 free_Ticket(opt->ticket);
1265 free(opt->ticket);
1266 opt->ticket = NULL;
1267 }
1268 if (ticket) {
1269 krb5_error_code ret;
1270
1271 opt->ticket = malloc(sizeof(*ticket));
1272 if (opt->ticket == NULL) {
1273 krb5_set_error_message(context, ENOMEM,
1274 N_("malloc: out of memory", ""));
1275 return ENOMEM;
1276 }
1277 ret = copy_Ticket(ticket, opt->ticket);
1278 if (ret) {
1279 free(opt->ticket);
1280 opt->ticket = NULL;
1281 krb5_set_error_message(context, ret,
1282 N_("malloc: out of memory", ""));
1283 return ret;
1284 }
1285 }
1286 return 0;
1287 }
1288
1289
1290
1291 krb5_error_code KRB5_LIB_FUNCTION
1292 krb5_get_creds(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1293 krb5_get_creds_opt opt,
1294 krb5_ccache ccache,
1295 krb5_const_principal inprinc,
1296 krb5_creds **out_creds)
1297 {
1298 krb5_kdc_flags flags;
1299 krb5_flags options;
1300 krb5_creds in_creds;
1301 krb5_error_code ret;
1302 krb5_creds **tgts;
1303 krb5_creds *res_creds;
1304 int i;
1305
1306 memset(&in_creds, 0, sizeof(in_creds));
1307 in_creds.server = rk_UNCONST(inprinc);
1308
1309 ret = krb5_cc_get_principal(context, ccache, &in_creds.client);
1310 if (ret)
1311 return ret;
1312
1313 options = opt->options;
1314 flags.i = 0;
1315
1316 *out_creds = NULL;
1317 res_creds = calloc(1, sizeof(*res_creds));
1318 if (res_creds == NULL) {
1319 krb5_free_principal(context, in_creds.client);
1320 krb5_set_error_message(context, ENOMEM,
1321 N_("malloc: out of memory", ""));
1322 return ENOMEM;
1323 }
1324
1325 if (opt->enctype) {
1326 in_creds.session.keytype = opt->enctype;
1327 options |= KRB5_TC_MATCH_KEYTYPE;
1328 }
1329
1330 /*
1331 * If we got a credential, check if credential is expired before
1332 * returning it.
1333 */
1334 ret = krb5_cc_retrieve_cred(context,
1335 ccache,
1336 opt->enctype ? KRB5_TC_MATCH_KEYTYPE : 0,
1337 &in_creds, res_creds);
1338 /*
1339 * If we got a credential, check if credential is expired before
1340 * returning it, but only if KRB5_GC_EXPIRED_OK is not set.
1341 */
1342 if (ret == 0) {
1343 krb5_timestamp timeret;
1344
1345 /* If expired ok, don't bother checking */
1346 if(options & KRB5_GC_EXPIRED_OK) {
1347 *out_creds = res_creds;
1348 krb5_free_principal(context, in_creds.client);
1349 return 0;
1350 }
1351
1352 krb5_timeofday(context, &timeret);
1353 if(res_creds->times.endtime > timeret) {
1354 *out_creds = res_creds;
1355 krb5_free_principal(context, in_creds.client);
1356 return 0;
1357 }
1358 if(options & KRB5_GC_CACHED)
1359 krb5_cc_remove_cred(context, ccache, 0, res_creds);
1360
1361 } else if(ret != KRB5_CC_END) {
1362 free(res_creds);
1363 krb5_free_principal(context, in_creds.client);
1364 return ret;
1365 }
1366 free(res_creds);
1367 if(options & KRB5_GC_CACHED) {
1368 krb5_free_principal(context, in_creds.client);
1369 return not_found(context, in_creds.server, KRB5_CC_NOTFOUND);
1370 }
1371 if(options & KRB5_GC_USER_USER) {
1372 flags.b.enc_tkt_in_skey = 1;
1373 options |= KRB5_GC_NO_STORE;
1374 }
1375 if (options & KRB5_GC_FORWARDABLE)
1376 flags.b.forwardable = 1;
1377 if (options & KRB5_GC_NO_TRANSIT_CHECK)
1378 flags.b.disable_transited_check = 1;
1379 if (options & KRB5_GC_CONSTRAINED_DELEGATION) {
1380 flags.b.request_anonymous = 1; /* XXX ARGH confusion */
1381 flags.b.constrained_delegation = 1;
1382 }
1383 if (options & KRB5_GC_CANONICALIZE)
1384 flags.b.canonicalize = 1;
1385
1386 tgts = NULL;
1387 ret = get_cred_kdc_any(context, flags, ccache,
1388 &in_creds, opt->self, opt->ticket,
1389 out_creds, &tgts);
1390 krb5_free_principal(context, in_creds.client);
1391 for(i = 0; tgts && tgts[i]; i++) {
1392 krb5_cc_store_cred(context, ccache, tgts[i]);
1393 krb5_free_creds(context, tgts[i]);
1394 }
1395 free(tgts);
1396 if(ret == 0 && (options & KRB5_GC_NO_STORE) == 0)
1397 krb5_cc_store_cred(context, ccache, *out_creds);
1398 return ret;
1399 }
1400
1401 /*
1402 *
1403 */
1404
1405 krb5_error_code KRB5_LIB_FUNCTION
1406 krb5_get_renewed_creds(krb5_context context,
/* [<][>][^][v][top][bottom][index][help] */
1407 krb5_creds *creds,
1408 krb5_const_principal client,
1409 krb5_ccache ccache,
1410 const char *in_tkt_service)
1411 {
1412 krb5_error_code ret;
1413 krb5_kdc_flags flags;
1414 krb5_creds in, *template, *out = NULL;
1415
1416 memset(&in, 0, sizeof(in));
1417 memset(creds, 0, sizeof(*creds));
1418
1419 ret = krb5_copy_principal(context, client, &in.client);
1420 if (ret)
1421 return ret;
1422
1423 if (in_tkt_service) {
1424 ret = krb5_parse_name(context, in_tkt_service, &in.server);
1425 if (ret) {
1426 krb5_free_principal(context, in.client);
1427 return ret;
1428 }
1429 } else {
1430 const char *realm = krb5_principal_get_realm(context, client);
1431
1432 ret = krb5_make_principal(context, &in.server, realm, KRB5_TGS_NAME,
1433 realm, NULL);
1434 if (ret) {
1435 krb5_free_principal(context, in.client);
1436 return ret;
1437 }
1438 }
1439
1440 flags.i = 0;
1441 flags.b.renewable = flags.b.renew = 1;
1442
1443 /*
1444 * Get template from old credential cache for the same entry, if
1445 * this failes, no worries.
1446 */
1447 ret = krb5_get_credentials(context, KRB5_GC_CACHED, ccache, &in, &template);
1448 if (ret == 0) {
1449 flags.b.forwardable = template->flags.b.forwardable;
1450 flags.b.proxiable = template->flags.b.proxiable;
1451 krb5_free_creds (context, template);
1452 }
1453
1454 ret = krb5_get_kdc_cred(context, ccache, flags, NULL, NULL, &in, &out);
1455 krb5_free_principal(context, in.client);
1456 krb5_free_principal(context, in.server);
1457 if (ret)
1458 return ret;
1459
1460 ret = krb5_copy_creds_contents(context, out, creds);
1461 krb5_free_creds(context, out);
1462
1463 return ret;
1464 }