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1/* ssl/s3_clnt.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58/* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111/* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 *
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
116 *
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
119 *
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
122 *
123 */
124/* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
126 *
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
129 * license.
130 *
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
134 *
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
138 *
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
143 *
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
148 * OTHERWISE.
149 */
150
151#include <stdio.h>
152#include "ssl_locl.h"
153#include "kssl_lcl.h"
154#include <openssl/buffer.h>
155#include <openssl/rand.h>
156#include <openssl/objects.h>
157#include <openssl/evp.h>
158#include <openssl/md5.h>
159#ifndef OPENSSL_NO_DH
160#include <openssl/dh.h>
161#endif
162#include <openssl/bn.h>
163#ifndef OPENSSL_NO_ENGINE
164#include <openssl/engine.h>
165#endif
166
167static const SSL_METHOD *ssl3_get_client_method(int ver);
168static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
169
170static const SSL_METHOD *ssl3_get_client_method(int ver)
171 {
172 if (ver == SSL3_VERSION)
173 return(SSLv3_client_method());
174 else
175 return(NULL);
176 }
177
178IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
179 ssl_undefined_function,
180 ssl3_connect,
181 ssl3_get_client_method)
182
183int ssl3_connect(SSL *s)
184 {
185 BUF_MEM *buf=NULL;
186 unsigned long Time=(unsigned long)time(NULL);
187 void (*cb)(const SSL *ssl,int type,int val)=NULL;
188 int ret= -1;
189 int new_state,state,skip=0;
190
191 RAND_add(&Time,sizeof(Time),0);
192 ERR_clear_error();
193 clear_sys_error();
194
195 if (s->info_callback != NULL)
196 cb=s->info_callback;
197 else if (s->ctx->info_callback != NULL)
198 cb=s->ctx->info_callback;
199
200 s->in_handshake++;
201 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
202
203 for (;;)
204 {
205 state=s->state;
206
207 switch(s->state)
208 {
209 case SSL_ST_RENEGOTIATE:
210 s->new_session=1;
211 s->state=SSL_ST_CONNECT;
212 s->ctx->stats.sess_connect_renegotiate++;
213 /* break */
214 case SSL_ST_BEFORE:
215 case SSL_ST_CONNECT:
216 case SSL_ST_BEFORE|SSL_ST_CONNECT:
217 case SSL_ST_OK|SSL_ST_CONNECT:
218
219 s->server=0;
220 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
221
222 if ((s->version & 0xff00 ) != 0x0300)
223 {
224 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
225 ret = -1;
226 goto end;
227 }
228
229 /* s->version=SSL3_VERSION; */
230 s->type=SSL_ST_CONNECT;
231
232 if (s->init_buf == NULL)
233 {
234 if ((buf=BUF_MEM_new()) == NULL)
235 {
236 ret= -1;
237 goto end;
238 }
239 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
240 {
241 ret= -1;
242 goto end;
243 }
244 s->init_buf=buf;
245 buf=NULL;
246 }
247
248 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
249
250 /* setup buffing BIO */
251 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
252
253 /* don't push the buffering BIO quite yet */
254
255 ssl3_init_finished_mac(s);
256
257 s->state=SSL3_ST_CW_CLNT_HELLO_A;
258 s->ctx->stats.sess_connect++;
259 s->init_num=0;
260 break;
261
262 case SSL3_ST_CW_CLNT_HELLO_A:
263 case SSL3_ST_CW_CLNT_HELLO_B:
264
265 s->shutdown=0;
266 ret=ssl3_client_hello(s);
267 if (ret <= 0) goto end;
268 s->state=SSL3_ST_CR_SRVR_HELLO_A;
269 s->init_num=0;
270
271 /* turn on buffering for the next lot of output */
272 if (s->bbio != s->wbio)
273 s->wbio=BIO_push(s->bbio,s->wbio);
274
275 break;
276
277 case SSL3_ST_CR_SRVR_HELLO_A:
278 case SSL3_ST_CR_SRVR_HELLO_B:
279 ret=ssl3_get_server_hello(s);
280 if (ret <= 0) goto end;
281
282 if (s->hit)
283 s->state=SSL3_ST_CR_FINISHED_A;
284 else
285 s->state=SSL3_ST_CR_CERT_A;
286 s->init_num=0;
287 break;
288
289 case SSL3_ST_CR_CERT_A:
290 case SSL3_ST_CR_CERT_B:
291#ifndef OPENSSL_NO_TLSEXT
292 ret=ssl3_check_finished(s);
293 if (ret <= 0) goto end;
294 if (ret == 2)
295 {
296 s->hit = 1;
297 if (s->tlsext_ticket_expected)
298 s->state=SSL3_ST_CR_SESSION_TICKET_A;
299 else
300 s->state=SSL3_ST_CR_FINISHED_A;
301 s->init_num=0;
302 break;
303 }
304#endif
305 /* Check if it is anon DH/ECDH */
306 /* or PSK */
307 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
308 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
309 {
310 ret=ssl3_get_server_certificate(s);
311 if (ret <= 0) goto end;
312#ifndef OPENSSL_NO_TLSEXT
313 if (s->tlsext_status_expected)
314 s->state=SSL3_ST_CR_CERT_STATUS_A;
315 else
316 s->state=SSL3_ST_CR_KEY_EXCH_A;
317 }
318 else
319 {
320 skip = 1;
321 s->state=SSL3_ST_CR_KEY_EXCH_A;
322 }
323#else
324 }
325 else
326 skip=1;
327
328 s->state=SSL3_ST_CR_KEY_EXCH_A;
329#endif
330 s->init_num=0;
331 break;
332
333 case SSL3_ST_CR_KEY_EXCH_A:
334 case SSL3_ST_CR_KEY_EXCH_B:
335 ret=ssl3_get_key_exchange(s);
336 if (ret <= 0) goto end;
337 s->state=SSL3_ST_CR_CERT_REQ_A;
338 s->init_num=0;
339
340 /* at this point we check that we have the
341 * required stuff from the server */
342 if (!ssl3_check_cert_and_algorithm(s))
343 {
344 ret= -1;
345 goto end;
346 }
347 break;
348
349 case SSL3_ST_CR_CERT_REQ_A:
350 case SSL3_ST_CR_CERT_REQ_B:
351 ret=ssl3_get_certificate_request(s);
352 if (ret <= 0) goto end;
353 s->state=SSL3_ST_CR_SRVR_DONE_A;
354 s->init_num=0;
355 break;
356
357 case SSL3_ST_CR_SRVR_DONE_A:
358 case SSL3_ST_CR_SRVR_DONE_B:
359 ret=ssl3_get_server_done(s);
360 if (ret <= 0) goto end;
361 if (s->s3->tmp.cert_req)
362 s->state=SSL3_ST_CW_CERT_A;
363 else
364 s->state=SSL3_ST_CW_KEY_EXCH_A;
365 s->init_num=0;
366
367 break;
368
369 case SSL3_ST_CW_CERT_A:
370 case SSL3_ST_CW_CERT_B:
371 case SSL3_ST_CW_CERT_C:
372 case SSL3_ST_CW_CERT_D:
373 ret=ssl3_send_client_certificate(s);
374 if (ret <= 0) goto end;
375 s->state=SSL3_ST_CW_KEY_EXCH_A;
376 s->init_num=0;
377 break;
378
379 case SSL3_ST_CW_KEY_EXCH_A:
380 case SSL3_ST_CW_KEY_EXCH_B:
381 ret=ssl3_send_client_key_exchange(s);
382 if (ret <= 0) goto end;
383 /* EAY EAY EAY need to check for DH fix cert
384 * sent back */
385 /* For TLS, cert_req is set to 2, so a cert chain
386 * of nothing is sent, but no verify packet is sent */
387 /* XXX: For now, we do not support client
388 * authentication in ECDH cipher suites with
389 * ECDH (rather than ECDSA) certificates.
390 * We need to skip the certificate verify
391 * message when client's ECDH public key is sent
392 * inside the client certificate.
393 */
394 if (s->s3->tmp.cert_req == 1)
395 {
396 s->state=SSL3_ST_CW_CERT_VRFY_A;
397 }
398 else
399 {
400 s->state=SSL3_ST_CW_CHANGE_A;
401 s->s3->change_cipher_spec=0;
402 }
403 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
404 {
405 s->state=SSL3_ST_CW_CHANGE_A;
406 s->s3->change_cipher_spec=0;
407 }
408
409 s->init_num=0;
410 break;
411
412 case SSL3_ST_CW_CERT_VRFY_A:
413 case SSL3_ST_CW_CERT_VRFY_B:
414 ret=ssl3_send_client_verify(s);
415 if (ret <= 0) goto end;
416 s->state=SSL3_ST_CW_CHANGE_A;
417 s->init_num=0;
418 s->s3->change_cipher_spec=0;
419 break;
420
421 case SSL3_ST_CW_CHANGE_A:
422 case SSL3_ST_CW_CHANGE_B:
423 ret=ssl3_send_change_cipher_spec(s,
424 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
425 if (ret <= 0) goto end;
426 s->state=SSL3_ST_CW_FINISHED_A;
427 s->init_num=0;
428
429 s->session->cipher=s->s3->tmp.new_cipher;
430#ifdef OPENSSL_NO_COMP
431 s->session->compress_meth=0;
432#else
433 if (s->s3->tmp.new_compression == NULL)
434 s->session->compress_meth=0;
435 else
436 s->session->compress_meth=
437 s->s3->tmp.new_compression->id;
438#endif
439 if (!s->method->ssl3_enc->setup_key_block(s))
440 {
441 ret= -1;
442 goto end;
443 }
444
445 if (!s->method->ssl3_enc->change_cipher_state(s,
446 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
447 {
448 ret= -1;
449 goto end;
450 }
451
452 break;
453
454 case SSL3_ST_CW_FINISHED_A:
455 case SSL3_ST_CW_FINISHED_B:
456 ret=ssl3_send_finished(s,
457 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
458 s->method->ssl3_enc->client_finished_label,
459 s->method->ssl3_enc->client_finished_label_len);
460 if (ret <= 0) goto end;
461 s->state=SSL3_ST_CW_FLUSH;
462
463 /* clear flags */
464 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
465 if (s->hit)
466 {
467 s->s3->tmp.next_state=SSL_ST_OK;
468 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
469 {
470 s->state=SSL_ST_OK;
471 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
472 s->s3->delay_buf_pop_ret=0;
473 }
474 }
475 else
476 {
477#ifndef OPENSSL_NO_TLSEXT
478 /* Allow NewSessionTicket if ticket expected */
479 if (s->tlsext_ticket_expected)
480 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
481 else
482#endif
483
484 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
485 }
486 s->init_num=0;
487 break;
488
489#ifndef OPENSSL_NO_TLSEXT
490 case SSL3_ST_CR_SESSION_TICKET_A:
491 case SSL3_ST_CR_SESSION_TICKET_B:
492 ret=ssl3_get_new_session_ticket(s);
493 if (ret <= 0) goto end;
494 s->state=SSL3_ST_CR_FINISHED_A;
495 s->init_num=0;
496 break;
497
498 case SSL3_ST_CR_CERT_STATUS_A:
499 case SSL3_ST_CR_CERT_STATUS_B:
500 ret=ssl3_get_cert_status(s);
501 if (ret <= 0) goto end;
502 s->state=SSL3_ST_CR_KEY_EXCH_A;
503 s->init_num=0;
504 break;
505#endif
506
507 case SSL3_ST_CR_FINISHED_A:
508 case SSL3_ST_CR_FINISHED_B:
509
510 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
511 SSL3_ST_CR_FINISHED_B);
512 if (ret <= 0) goto end;
513
514 if (s->hit)
515 s->state=SSL3_ST_CW_CHANGE_A;
516 else
517 s->state=SSL_ST_OK;
518 s->init_num=0;
519 break;
520
521 case SSL3_ST_CW_FLUSH:
522 s->rwstate=SSL_WRITING;
523 if (BIO_flush(s->wbio) <= 0)
524 {
525 ret= -1;
526 goto end;
527 }
528 s->rwstate=SSL_NOTHING;
529 s->state=s->s3->tmp.next_state;
530 break;
531
532 case SSL_ST_OK:
533 /* clean a few things up */
534 ssl3_cleanup_key_block(s);
535
536 if (s->init_buf != NULL)
537 {
538 BUF_MEM_free(s->init_buf);
539 s->init_buf=NULL;
540 }
541
542 /* If we are not 'joining' the last two packets,
543 * remove the buffering now */
544 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
545 ssl_free_wbio_buffer(s);
546 /* else do it later in ssl3_write */
547
548 s->init_num=0;
549 s->new_session=0;
550
551 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
552 if (s->hit) s->ctx->stats.sess_hit++;
553
554 ret=1;
555 /* s->server=0; */
556 s->handshake_func=ssl3_connect;
557 s->ctx->stats.sess_connect_good++;
558
559 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
560
561 goto end;
562 /* break; */
563
564 default:
565 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
566 ret= -1;
567 goto end;
568 /* break; */
569 }
570
571 /* did we do anything */
572 if (!s->s3->tmp.reuse_message && !skip)
573 {
574 if (s->debug)
575 {
576 if ((ret=BIO_flush(s->wbio)) <= 0)
577 goto end;
578 }
579
580 if ((cb != NULL) && (s->state != state))
581 {
582 new_state=s->state;
583 s->state=state;
584 cb(s,SSL_CB_CONNECT_LOOP,1);
585 s->state=new_state;
586 }
587 }
588 skip=0;
589 }
590end:
591 s->in_handshake--;
592 if (buf != NULL)
593 BUF_MEM_free(buf);
594 if (cb != NULL)
595 cb(s,SSL_CB_CONNECT_EXIT,ret);
596 return(ret);
597 }
598
599
600int ssl3_client_hello(SSL *s)
601 {
602 unsigned char *buf;
603 unsigned char *p,*d;
604 int i;
605 unsigned long Time,l;
606#ifndef OPENSSL_NO_COMP
607 int j;
608 SSL_COMP *comp;
609#endif
610
611 buf=(unsigned char *)s->init_buf->data;
612 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
613 {
614 SSL_SESSION *sess = s->session;
615 if ((sess == NULL) ||
616 (sess->ssl_version != s->version) ||
617#ifdef OPENSSL_NO_TLSEXT
618 !sess->session_id_length ||
619#else
620 (!sess->session_id_length && !sess->tlsext_tick) ||
621#endif
622 (sess->not_resumable))
623 {
624 if (!ssl_get_new_session(s,0))
625 goto err;
626 }
627 /* else use the pre-loaded session */
628
629 p=s->s3->client_random;
630 Time=(unsigned long)time(NULL); /* Time */
631 l2n(Time,p);
632 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
633 goto err;
634
635 /* Do the message type and length last */
636 d=p= &(buf[4]);
637
638 *(p++)=s->version>>8;
639 *(p++)=s->version&0xff;
640 s->client_version=s->version;
641
642 /* Random stuff */
643 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
644 p+=SSL3_RANDOM_SIZE;
645
646 /* Session ID */
647 if (s->new_session)
648 i=0;
649 else
650 i=s->session->session_id_length;
651 *(p++)=i;
652 if (i != 0)
653 {
654 if (i > (int)sizeof(s->session->session_id))
655 {
656 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
657 goto err;
658 }
659 memcpy(p,s->session->session_id,i);
660 p+=i;
661 }
662
663 /* Ciphers supported */
664 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
665 if (i == 0)
666 {
667 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
668 goto err;
669 }
670 s2n(i,p);
671 p+=i;
672
673 /* COMPRESSION */
674#ifdef OPENSSL_NO_COMP
675 *(p++)=1;
676#else
677
678 if ((s->options & SSL_OP_NO_COMPRESSION)
679 || !s->ctx->comp_methods)
680 j=0;
681 else
682 j=sk_SSL_COMP_num(s->ctx->comp_methods);
683 *(p++)=1+j;
684 for (i=0; i<j; i++)
685 {
686 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
687 *(p++)=comp->id;
688 }
689#endif
690 *(p++)=0; /* Add the NULL method */
691
692#ifndef OPENSSL_NO_TLSEXT
693 /* TLS extensions*/
694 if (ssl_prepare_clienthello_tlsext(s) <= 0)
695 {
696 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
697 goto err;
698 }
699 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
700 {
701 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
702 goto err;
703 }
704#endif
705
706 l=(p-d);
707 d=buf;
708 *(d++)=SSL3_MT_CLIENT_HELLO;
709 l2n3(l,d);
710
711 s->state=SSL3_ST_CW_CLNT_HELLO_B;
712 /* number of bytes to write */
713 s->init_num=p-buf;
714 s->init_off=0;
715 }
716
717 /* SSL3_ST_CW_CLNT_HELLO_B */
718 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
719err:
720 return(-1);
721 }
722
723int ssl3_get_server_hello(SSL *s)
724 {
725 STACK_OF(SSL_CIPHER) *sk;
726 const SSL_CIPHER *c;
727 unsigned char *p,*d;
728 int i,al,ok;
729 unsigned int j;
730 long n;
731#ifndef OPENSSL_NO_COMP
732 SSL_COMP *comp;
733#endif
734
735 n=s->method->ssl_get_message(s,
736 SSL3_ST_CR_SRVR_HELLO_A,
737 SSL3_ST_CR_SRVR_HELLO_B,
738 -1,
739 20000, /* ?? */
740 &ok);
741
742 if (!ok) return((int)n);
743
744 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
745 {
746 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
747 {
748 if ( s->d1->send_cookie == 0)
749 {
750 s->s3->tmp.reuse_message = 1;
751 return 1;
752 }
753 else /* already sent a cookie */
754 {
755 al=SSL_AD_UNEXPECTED_MESSAGE;
756 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
757 goto f_err;
758 }
759 }
760 }
761
762 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
763 {
764 al=SSL_AD_UNEXPECTED_MESSAGE;
765 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
766 goto f_err;
767 }
768
769 d=p=(unsigned char *)s->init_msg;
770
771 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
772 {
773 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
774 s->version=(s->version&0xff00)|p[1];
775 al=SSL_AD_PROTOCOL_VERSION;
776 goto f_err;
777 }
778 p+=2;
779
780 /* load the server hello data */
781 /* load the server random */
782 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
783 p+=SSL3_RANDOM_SIZE;
784
785 /* get the session-id */
786 j= *(p++);
787
788 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
789 {
790 al=SSL_AD_ILLEGAL_PARAMETER;
791 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
792 goto f_err;
793 }
794
795#ifndef OPENSSL_NO_TLSEXT
796 /* check if we want to resume the session based on external pre-shared secret */
797 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
798 {
799 SSL_CIPHER *pref_cipher=NULL;
800 s->session->master_key_length=sizeof(s->session->master_key);
801 if (s->tls_session_secret_cb(s, s->session->master_key,
802 &s->session->master_key_length,
803 NULL, &pref_cipher,
804 s->tls_session_secret_cb_arg))
805 {
806 s->session->cipher = pref_cipher ?
807 pref_cipher : ssl_get_cipher_by_char(s, p+j);
808 }
809 }
810#endif /* OPENSSL_NO_TLSEXT */
811
812 if (j != 0 && j == s->session->session_id_length
813 && memcmp(p,s->session->session_id,j) == 0)
814 {
815 if(s->sid_ctx_length != s->session->sid_ctx_length
816 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
817 {
818 /* actually a client application bug */
819 al=SSL_AD_ILLEGAL_PARAMETER;
820 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
821 goto f_err;
822 }
823 s->hit=1;
824 }
825 else /* a miss or crap from the other end */
826 {
827 /* If we were trying for session-id reuse, make a new
828 * SSL_SESSION so we don't stuff up other people */
829 s->hit=0;
830 if (s->session->session_id_length > 0)
831 {
832 if (!ssl_get_new_session(s,0))
833 {
834 al=SSL_AD_INTERNAL_ERROR;
835 goto f_err;
836 }
837 }
838 s->session->session_id_length=j;
839 memcpy(s->session->session_id,p,j); /* j could be 0 */
840 }
841 p+=j;
842 c=ssl_get_cipher_by_char(s,p);
843 if (c == NULL)
844 {
845 /* unknown cipher */
846 al=SSL_AD_ILLEGAL_PARAMETER;
847 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
848 goto f_err;
849 }
850 p+=ssl_put_cipher_by_char(s,NULL,NULL);
851
852 sk=ssl_get_ciphers_by_id(s);
853 i=sk_SSL_CIPHER_find(sk,c);
854 if (i < 0)
855 {
856 /* we did not say we would use this cipher */
857 al=SSL_AD_ILLEGAL_PARAMETER;
858 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
859 goto f_err;
860 }
861
862 /* Depending on the session caching (internal/external), the cipher
863 and/or cipher_id values may not be set. Make sure that
864 cipher_id is set and use it for comparison. */
865 if (s->session->cipher)
866 s->session->cipher_id = s->session->cipher->id;
867 if (s->hit && (s->session->cipher_id != c->id))
868 {
869/* Workaround is now obsolete */
870#if 0
871 if (!(s->options &
872 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
873#endif
874 {
875 al=SSL_AD_ILLEGAL_PARAMETER;
876 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
877 goto f_err;
878 }
879 }
880 s->s3->tmp.new_cipher=c;
881 if (!ssl3_digest_cached_records(s))
882 goto f_err;
883
884 /* lets get the compression algorithm */
885 /* COMPRESSION */
886#ifdef OPENSSL_NO_COMP
887 if (*(p++) != 0)
888 {
889 al=SSL_AD_ILLEGAL_PARAMETER;
890 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
891 goto f_err;
892 }
893 /* If compression is disabled we'd better not try to resume a session
894 * using compression.
895 */
896 if (s->session->compress_meth != 0)
897 {
898 al=SSL_AD_INTERNAL_ERROR;
899 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
900 goto f_err;
901 }
902#else
903 j= *(p++);
904 if (s->hit && j != s->session->compress_meth)
905 {
906 al=SSL_AD_ILLEGAL_PARAMETER;
907 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
908 goto f_err;
909 }
910 if (j == 0)
911 comp=NULL;
912 else if (s->options & SSL_OP_NO_COMPRESSION)
913 {
914 al=SSL_AD_ILLEGAL_PARAMETER;
915 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
916 goto f_err;
917 }
918 else
919 comp=ssl3_comp_find(s->ctx->comp_methods,j);
920
921 if ((j != 0) && (comp == NULL))
922 {
923 al=SSL_AD_ILLEGAL_PARAMETER;
924 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
925 goto f_err;
926 }
927 else
928 {
929 s->s3->tmp.new_compression=comp;
930 }
931#endif
932
933#ifndef OPENSSL_NO_TLSEXT
934 /* TLS extensions*/
935 if (s->version >= SSL3_VERSION)
936 {
937 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
938 {
939 /* 'al' set by ssl_parse_serverhello_tlsext */
940 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
941 goto f_err;
942 }
943 if (ssl_check_serverhello_tlsext(s) <= 0)
944 {
945 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
946 goto err;
947 }
948 }
949#endif
950
951 if (p != (d+n))
952 {
953 /* wrong packet length */
954 al=SSL_AD_DECODE_ERROR;
955 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
956 goto err;
957 }
958
959 return(1);
960f_err:
961 ssl3_send_alert(s,SSL3_AL_FATAL,al);
962err:
963 return(-1);
964 }
965
966int ssl3_get_server_certificate(SSL *s)
967 {
968 int al,i,ok,ret= -1;
969 unsigned long n,nc,llen,l;
970 X509 *x=NULL;
971 const unsigned char *q,*p;
972 unsigned char *d;
973 STACK_OF(X509) *sk=NULL;
974 SESS_CERT *sc;
975 EVP_PKEY *pkey=NULL;
976 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
977
978 n=s->method->ssl_get_message(s,
979 SSL3_ST_CR_CERT_A,
980 SSL3_ST_CR_CERT_B,
981 -1,
982 s->max_cert_list,
983 &ok);
984
985 if (!ok) return((int)n);
986
987 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
988 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
989 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
990 {
991 s->s3->tmp.reuse_message=1;
992 return(1);
993 }
994
995 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
996 {
997 al=SSL_AD_UNEXPECTED_MESSAGE;
998 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
999 goto f_err;
1000 }
1001 p=d=(unsigned char *)s->init_msg;
1002
1003 if ((sk=sk_X509_new_null()) == NULL)
1004 {
1005 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1006 goto err;
1007 }
1008
1009 n2l3(p,llen);
1010 if (llen+3 != n)
1011 {
1012 al=SSL_AD_DECODE_ERROR;
1013 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1014 goto f_err;
1015 }
1016 for (nc=0; nc<llen; )
1017 {
1018 n2l3(p,l);
1019 if ((l+nc+3) > llen)
1020 {
1021 al=SSL_AD_DECODE_ERROR;
1022 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1023 goto f_err;
1024 }
1025
1026 q=p;
1027 x=d2i_X509(NULL,&q,l);
1028 if (x == NULL)
1029 {
1030 al=SSL_AD_BAD_CERTIFICATE;
1031 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1032 goto f_err;
1033 }
1034 if (q != (p+l))
1035 {
1036 al=SSL_AD_DECODE_ERROR;
1037 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1038 goto f_err;
1039 }
1040 if (!sk_X509_push(sk,x))
1041 {
1042 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1043 goto err;
1044 }
1045 x=NULL;
1046 nc+=l+3;
1047 p=q;
1048 }
1049
1050 i=ssl_verify_cert_chain(s,sk);
1051 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1052#ifndef OPENSSL_NO_KRB5
1053 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1054 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1055#endif /* OPENSSL_NO_KRB5 */
1056 )
1057 {
1058 al=ssl_verify_alarm_type(s->verify_result);
1059 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1060 goto f_err;
1061 }
1062 ERR_clear_error(); /* but we keep s->verify_result */
1063
1064 sc=ssl_sess_cert_new();
1065 if (sc == NULL) goto err;
1066
1067 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1068 s->session->sess_cert=sc;
1069
1070 sc->cert_chain=sk;
1071 /* Inconsistency alert: cert_chain does include the peer's
1072 * certificate, which we don't include in s3_srvr.c */
1073 x=sk_X509_value(sk,0);
1074 sk=NULL;
1075 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1076
1077 pkey=X509_get_pubkey(x);
1078
1079 /* VRS: allow null cert if auth == KRB5 */
1080 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1081 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1082 ? 0 : 1;
1083
1084#ifdef KSSL_DEBUG
1085 printf("pkey,x = %p, %p\n", pkey,x);
1086 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1087 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1088 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1089#endif /* KSSL_DEBUG */
1090
1091 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1092 {
1093 x=NULL;
1094 al=SSL3_AL_FATAL;
1095 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1096 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1097 goto f_err;
1098 }
1099
1100 i=ssl_cert_type(x,pkey);
1101 if (need_cert && i < 0)
1102 {
1103 x=NULL;
1104 al=SSL3_AL_FATAL;
1105 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1106 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1107 goto f_err;
1108 }
1109
1110 if (need_cert)
1111 {
1112 sc->peer_cert_type=i;
1113 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1114 /* Why would the following ever happen?
1115 * We just created sc a couple of lines ago. */
1116 if (sc->peer_pkeys[i].x509 != NULL)
1117 X509_free(sc->peer_pkeys[i].x509);
1118 sc->peer_pkeys[i].x509=x;
1119 sc->peer_key= &(sc->peer_pkeys[i]);
1120
1121 if (s->session->peer != NULL)
1122 X509_free(s->session->peer);
1123 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1124 s->session->peer=x;
1125 }
1126 else
1127 {
1128 sc->peer_cert_type=i;
1129 sc->peer_key= NULL;
1130
1131 if (s->session->peer != NULL)
1132 X509_free(s->session->peer);
1133 s->session->peer=NULL;
1134 }
1135 s->session->verify_result = s->verify_result;
1136
1137 x=NULL;
1138 ret=1;
1139
1140 if (0)
1141 {
1142f_err:
1143 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1144 }
1145err:
1146 EVP_PKEY_free(pkey);
1147 X509_free(x);
1148 sk_X509_pop_free(sk,X509_free);
1149 return(ret);
1150 }
1151
1152int ssl3_get_key_exchange(SSL *s)
1153 {
1154#ifndef OPENSSL_NO_RSA
1155 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1156#endif
1157 EVP_MD_CTX md_ctx;
1158 unsigned char *param,*p;
1159 int al,i,j,param_len,ok;
1160 long n,alg_k,alg_a;
1161 EVP_PKEY *pkey=NULL;
1162#ifndef OPENSSL_NO_RSA
1163 RSA *rsa=NULL;
1164#endif
1165#ifndef OPENSSL_NO_DH
1166 DH *dh=NULL;
1167#endif
1168#ifndef OPENSSL_NO_ECDH
1169 EC_KEY *ecdh = NULL;
1170 BN_CTX *bn_ctx = NULL;
1171 EC_POINT *srvr_ecpoint = NULL;
1172 int curve_nid = 0;
1173 int encoded_pt_len = 0;
1174#endif
1175
1176 /* use same message size as in ssl3_get_certificate_request()
1177 * as ServerKeyExchange message may be skipped */
1178 n=s->method->ssl_get_message(s,
1179 SSL3_ST_CR_KEY_EXCH_A,
1180 SSL3_ST_CR_KEY_EXCH_B,
1181 -1,
1182 s->max_cert_list,
1183 &ok);
1184 if (!ok) return((int)n);
1185
1186 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1187 {
1188#ifndef OPENSSL_NO_PSK
1189 /* In plain PSK ciphersuite, ServerKeyExchange can be
1190 omitted if no identity hint is sent. Set
1191 session->sess_cert anyway to avoid problems
1192 later.*/
1193 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1194 {
1195 s->session->sess_cert=ssl_sess_cert_new();
1196 if (s->ctx->psk_identity_hint)
1197 OPENSSL_free(s->ctx->psk_identity_hint);
1198 s->ctx->psk_identity_hint = NULL;
1199 }
1200#endif
1201 s->s3->tmp.reuse_message=1;
1202 return(1);
1203 }
1204
1205 param=p=(unsigned char *)s->init_msg;
1206 if (s->session->sess_cert != NULL)
1207 {
1208#ifndef OPENSSL_NO_RSA
1209 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1210 {
1211 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1212 s->session->sess_cert->peer_rsa_tmp=NULL;
1213 }
1214#endif
1215#ifndef OPENSSL_NO_DH
1216 if (s->session->sess_cert->peer_dh_tmp)
1217 {
1218 DH_free(s->session->sess_cert->peer_dh_tmp);
1219 s->session->sess_cert->peer_dh_tmp=NULL;
1220 }
1221#endif
1222#ifndef OPENSSL_NO_ECDH
1223 if (s->session->sess_cert->peer_ecdh_tmp)
1224 {
1225 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1226 s->session->sess_cert->peer_ecdh_tmp=NULL;
1227 }
1228#endif
1229 }
1230 else
1231 {
1232 s->session->sess_cert=ssl_sess_cert_new();
1233 }
1234
1235 param_len=0;
1236 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1237 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1238 EVP_MD_CTX_init(&md_ctx);
1239
1240#ifndef OPENSSL_NO_PSK
1241 if (alg_k & SSL_kPSK)
1242 {
1243 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1244
1245 al=SSL_AD_HANDSHAKE_FAILURE;
1246 n2s(p,i);
1247 param_len=i+2;
1248 /* Store PSK identity hint for later use, hint is used
1249 * in ssl3_send_client_key_exchange. Assume that the
1250 * maximum length of a PSK identity hint can be as
1251 * long as the maximum length of a PSK identity. */
1252 if (i > PSK_MAX_IDENTITY_LEN)
1253 {
1254 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1255 SSL_R_DATA_LENGTH_TOO_LONG);
1256 goto f_err;
1257 }
1258 if (param_len > n)
1259 {
1260 al=SSL_AD_DECODE_ERROR;
1261 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1262 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1263 goto f_err;
1264 }
1265 /* If received PSK identity hint contains NULL
1266 * characters, the hint is truncated from the first
1267 * NULL. p may not be ending with NULL, so create a
1268 * NULL-terminated string. */
1269 memcpy(tmp_id_hint, p, i);
1270 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1271 if (s->ctx->psk_identity_hint != NULL)
1272 OPENSSL_free(s->ctx->psk_identity_hint);
1273 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1274 if (s->ctx->psk_identity_hint == NULL)
1275 {
1276 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1277 goto f_err;
1278 }
1279
1280 p+=i;
1281 n-=param_len;
1282 }
1283 else
1284#endif /* !OPENSSL_NO_PSK */
1285#ifndef OPENSSL_NO_RSA
1286 if (alg_k & SSL_kRSA)
1287 {
1288 if ((rsa=RSA_new()) == NULL)
1289 {
1290 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1291 goto err;
1292 }
1293 n2s(p,i);
1294 param_len=i+2;
1295 if (param_len > n)
1296 {
1297 al=SSL_AD_DECODE_ERROR;
1298 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1299 goto f_err;
1300 }
1301 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1302 {
1303 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1304 goto err;
1305 }
1306 p+=i;
1307
1308 n2s(p,i);
1309 param_len+=i+2;
1310 if (param_len > n)
1311 {
1312 al=SSL_AD_DECODE_ERROR;
1313 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1314 goto f_err;
1315 }
1316 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1317 {
1318 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1319 goto err;
1320 }
1321 p+=i;
1322 n-=param_len;
1323
1324 /* this should be because we are using an export cipher */
1325 if (alg_a & SSL_aRSA)
1326 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1327 else
1328 {
1329 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1330 goto err;
1331 }
1332 s->session->sess_cert->peer_rsa_tmp=rsa;
1333 rsa=NULL;
1334 }
1335#else /* OPENSSL_NO_RSA */
1336 if (0)
1337 ;
1338#endif
1339#ifndef OPENSSL_NO_DH
1340 else if (alg_k & SSL_kEDH)
1341 {
1342 if ((dh=DH_new()) == NULL)
1343 {
1344 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1345 goto err;
1346 }
1347 n2s(p,i);
1348 param_len=i+2;
1349 if (param_len > n)
1350 {
1351 al=SSL_AD_DECODE_ERROR;
1352 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1353 goto f_err;
1354 }
1355 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1356 {
1357 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1358 goto err;
1359 }
1360 p+=i;
1361
1362 n2s(p,i);
1363 param_len+=i+2;
1364 if (param_len > n)
1365 {
1366 al=SSL_AD_DECODE_ERROR;
1367 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1368 goto f_err;
1369 }
1370 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1371 {
1372 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1373 goto err;
1374 }
1375 p+=i;
1376
1377 n2s(p,i);
1378 param_len+=i+2;
1379 if (param_len > n)
1380 {
1381 al=SSL_AD_DECODE_ERROR;
1382 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1383 goto f_err;
1384 }
1385 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1386 {
1387 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1388 goto err;
1389 }
1390 p+=i;
1391 n-=param_len;
1392
1393#ifndef OPENSSL_NO_RSA
1394 if (alg_a & SSL_aRSA)
1395 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1396#else
1397 if (0)
1398 ;
1399#endif
1400#ifndef OPENSSL_NO_DSA
1401 else if (alg_a & SSL_aDSS)
1402 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1403#endif
1404 /* else anonymous DH, so no certificate or pkey. */
1405
1406 s->session->sess_cert->peer_dh_tmp=dh;
1407 dh=NULL;
1408 }
1409 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1410 {
1411 al=SSL_AD_ILLEGAL_PARAMETER;
1412 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1413 goto f_err;
1414 }
1415#endif /* !OPENSSL_NO_DH */
1416
1417#ifndef OPENSSL_NO_ECDH
1418 else if (alg_k & SSL_kEECDH)
1419 {
1420 EC_GROUP *ngroup;
1421 const EC_GROUP *group;
1422
1423 if ((ecdh=EC_KEY_new()) == NULL)
1424 {
1425 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1426 goto err;
1427 }
1428
1429 /* Extract elliptic curve parameters and the
1430 * server's ephemeral ECDH public key.
1431 * Keep accumulating lengths of various components in
1432 * param_len and make sure it never exceeds n.
1433 */
1434
1435 /* XXX: For now we only support named (not generic) curves
1436 * and the ECParameters in this case is just three bytes.
1437 */
1438 param_len=3;
1439 if ((param_len > n) ||
1440 (*p != NAMED_CURVE_TYPE) ||
1441 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1442 {
1443 al=SSL_AD_INTERNAL_ERROR;
1444 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1445 goto f_err;
1446 }
1447
1448 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1449 if (ngroup == NULL)
1450 {
1451 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1452 goto err;
1453 }
1454 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1455 {
1456 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1457 goto err;
1458 }
1459 EC_GROUP_free(ngroup);
1460
1461 group = EC_KEY_get0_group(ecdh);
1462
1463 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1464 (EC_GROUP_get_degree(group) > 163))
1465 {
1466 al=SSL_AD_EXPORT_RESTRICTION;
1467 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1468 goto f_err;
1469 }
1470
1471 p+=3;
1472
1473 /* Next, get the encoded ECPoint */
1474 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1475 ((bn_ctx = BN_CTX_new()) == NULL))
1476 {
1477 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1478 goto err;
1479 }
1480
1481 encoded_pt_len = *p; /* length of encoded point */
1482 p+=1;
1483 param_len += (1 + encoded_pt_len);
1484 if ((param_len > n) ||
1485 (EC_POINT_oct2point(group, srvr_ecpoint,
1486 p, encoded_pt_len, bn_ctx) == 0))
1487 {
1488 al=SSL_AD_DECODE_ERROR;
1489 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1490 goto f_err;
1491 }
1492
1493 n-=param_len;
1494 p+=encoded_pt_len;
1495
1496 /* The ECC/TLS specification does not mention
1497 * the use of DSA to sign ECParameters in the server
1498 * key exchange message. We do support RSA and ECDSA.
1499 */
1500 if (0) ;
1501#ifndef OPENSSL_NO_RSA
1502 else if (alg_a & SSL_aRSA)
1503 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1504#endif
1505#ifndef OPENSSL_NO_ECDSA
1506 else if (alg_a & SSL_aECDSA)
1507 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1508#endif
1509 /* else anonymous ECDH, so no certificate or pkey. */
1510 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1511 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1512 ecdh=NULL;
1513 BN_CTX_free(bn_ctx);
1514 EC_POINT_free(srvr_ecpoint);
1515 srvr_ecpoint = NULL;
1516 }
1517 else if (alg_k)
1518 {
1519 al=SSL_AD_UNEXPECTED_MESSAGE;
1520 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1521 goto f_err;
1522 }
1523#endif /* !OPENSSL_NO_ECDH */
1524
1525
1526 /* p points to the next byte, there are 'n' bytes left */
1527
1528 /* if it was signed, check the signature */
1529 if (pkey != NULL)
1530 {
1531 n2s(p,i);
1532 n-=2;
1533 j=EVP_PKEY_size(pkey);
1534
1535 if ((i != n) || (n > j) || (n <= 0))
1536 {
1537 /* wrong packet length */
1538 al=SSL_AD_DECODE_ERROR;
1539 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1540 goto f_err;
1541 }
1542
1543#ifndef OPENSSL_NO_RSA
1544 if (pkey->type == EVP_PKEY_RSA)
1545 {
1546 int num;
1547
1548 j=0;
1549 q=md_buf;
1550 for (num=2; num > 0; num--)
1551 {
1552 EVP_DigestInit_ex(&md_ctx,(num == 2)
1553 ?s->ctx->md5:s->ctx->sha1, NULL);
1554 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1555 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1556 EVP_DigestUpdate(&md_ctx,param,param_len);
1557 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1558 q+=i;
1559 j+=i;
1560 }
1561 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1562 pkey->pkey.rsa);
1563 if (i < 0)
1564 {
1565 al=SSL_AD_DECRYPT_ERROR;
1566 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1567 goto f_err;
1568 }
1569 if (i == 0)
1570 {
1571 /* bad signature */
1572 al=SSL_AD_DECRYPT_ERROR;
1573 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1574 goto f_err;
1575 }
1576 }
1577 else
1578#endif
1579#ifndef OPENSSL_NO_DSA
1580 if (pkey->type == EVP_PKEY_DSA)
1581 {
1582 /* lets do DSS */
1583 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1584 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1585 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1586 EVP_VerifyUpdate(&md_ctx,param,param_len);
1587 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1588 {
1589 /* bad signature */
1590 al=SSL_AD_DECRYPT_ERROR;
1591 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1592 goto f_err;
1593 }
1594 }
1595 else
1596#endif
1597#ifndef OPENSSL_NO_ECDSA
1598 if (pkey->type == EVP_PKEY_EC)
1599 {
1600 /* let's do ECDSA */
1601 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1602 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1603 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1604 EVP_VerifyUpdate(&md_ctx,param,param_len);
1605 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1606 {
1607 /* bad signature */
1608 al=SSL_AD_DECRYPT_ERROR;
1609 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1610 goto f_err;
1611 }
1612 }
1613 else
1614#endif
1615 {
1616 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1617 goto err;
1618 }
1619 }
1620 else
1621 {
1622 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1623 /* aNULL or kPSK do not need public keys */
1624 {
1625 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1626 goto err;
1627 }
1628 /* still data left over */
1629 if (n != 0)
1630 {
1631 al=SSL_AD_DECODE_ERROR;
1632 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1633 goto f_err;
1634 }
1635 }
1636 EVP_PKEY_free(pkey);
1637 EVP_MD_CTX_cleanup(&md_ctx);
1638 return(1);
1639f_err:
1640 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1641err:
1642 EVP_PKEY_free(pkey);
1643#ifndef OPENSSL_NO_RSA
1644 if (rsa != NULL)
1645 RSA_free(rsa);
1646#endif
1647#ifndef OPENSSL_NO_DH
1648 if (dh != NULL)
1649 DH_free(dh);
1650#endif
1651#ifndef OPENSSL_NO_ECDH
1652 BN_CTX_free(bn_ctx);
1653 EC_POINT_free(srvr_ecpoint);
1654 if (ecdh != NULL)
1655 EC_KEY_free(ecdh);
1656#endif
1657 EVP_MD_CTX_cleanup(&md_ctx);
1658 return(-1);
1659 }
1660
1661int ssl3_get_certificate_request(SSL *s)
1662 {
1663 int ok,ret=0;
1664 unsigned long n,nc,l;
1665 unsigned int llen,ctype_num,i;
1666 X509_NAME *xn=NULL;
1667 const unsigned char *p,*q;
1668 unsigned char *d;
1669 STACK_OF(X509_NAME) *ca_sk=NULL;
1670
1671 n=s->method->ssl_get_message(s,
1672 SSL3_ST_CR_CERT_REQ_A,
1673 SSL3_ST_CR_CERT_REQ_B,
1674 -1,
1675 s->max_cert_list,
1676 &ok);
1677
1678 if (!ok) return((int)n);
1679
1680 s->s3->tmp.cert_req=0;
1681
1682 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1683 {
1684 s->s3->tmp.reuse_message=1;
1685 return(1);
1686 }
1687
1688 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1689 {
1690 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1691 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1692 goto err;
1693 }
1694
1695 /* TLS does not like anon-DH with client cert */
1696 if (s->version > SSL3_VERSION)
1697 {
1698 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1699 {
1700 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1701 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1702 goto err;
1703 }
1704 }
1705
1706 p=d=(unsigned char *)s->init_msg;
1707
1708 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1709 {
1710 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1711 goto err;
1712 }
1713
1714 /* get the certificate types */
1715 ctype_num= *(p++);
1716 if (ctype_num > SSL3_CT_NUMBER)
1717 ctype_num=SSL3_CT_NUMBER;
1718 for (i=0; i<ctype_num; i++)
1719 s->s3->tmp.ctype[i]= p[i];
1720 p+=ctype_num;
1721
1722 /* get the CA RDNs */
1723 n2s(p,llen);
1724#if 0
1725{
1726FILE *out;
1727out=fopen("/tmp/vsign.der","w");
1728fwrite(p,1,llen,out);
1729fclose(out);
1730}
1731#endif
1732
1733 if ((llen+ctype_num+2+1) != n)
1734 {
1735 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1736 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1737 goto err;
1738 }
1739
1740 for (nc=0; nc<llen; )
1741 {
1742 n2s(p,l);
1743 if ((l+nc+2) > llen)
1744 {
1745 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1746 goto cont; /* netscape bugs */
1747 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1748 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1749 goto err;
1750 }
1751
1752 q=p;
1753
1754 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1755 {
1756 /* If netscape tolerance is on, ignore errors */
1757 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1758 goto cont;
1759 else
1760 {
1761 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1762 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1763 goto err;
1764 }
1765 }
1766
1767 if (q != (p+l))
1768 {
1769 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1770 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1771 goto err;
1772 }
1773 if (!sk_X509_NAME_push(ca_sk,xn))
1774 {
1775 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1776 goto err;
1777 }
1778
1779 p+=l;
1780 nc+=l+2;
1781 }
1782
1783 if (0)
1784 {
1785cont:
1786 ERR_clear_error();
1787 }
1788
1789 /* we should setup a certificate to return.... */
1790 s->s3->tmp.cert_req=1;
1791 s->s3->tmp.ctype_num=ctype_num;
1792 if (s->s3->tmp.ca_names != NULL)
1793 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1794 s->s3->tmp.ca_names=ca_sk;
1795 ca_sk=NULL;
1796
1797 ret=1;
1798err:
1799 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1800 return(ret);
1801 }
1802
1803static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1804 {
1805 return(X509_NAME_cmp(*a,*b));
1806 }
1807#ifndef OPENSSL_NO_TLSEXT
1808int ssl3_get_new_session_ticket(SSL *s)
1809 {
1810 int ok,al,ret=0, ticklen;
1811 long n;
1812 const unsigned char *p;
1813 unsigned char *d;
1814
1815 n=s->method->ssl_get_message(s,
1816 SSL3_ST_CR_SESSION_TICKET_A,
1817 SSL3_ST_CR_SESSION_TICKET_B,
1818 -1,
1819 16384,
1820 &ok);
1821
1822 if (!ok)
1823 return((int)n);
1824
1825 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1826 {
1827 s->s3->tmp.reuse_message=1;
1828 return(1);
1829 }
1830 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1831 {
1832 al=SSL_AD_UNEXPECTED_MESSAGE;
1833 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1834 goto f_err;
1835 }
1836 if (n < 6)
1837 {
1838 /* need at least ticket_lifetime_hint + ticket length */
1839 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1840 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1841 goto f_err;
1842 }
1843
1844 p=d=(unsigned char *)s->init_msg;
1845 n2l(p, s->session->tlsext_tick_lifetime_hint);
1846 n2s(p, ticklen);
1847 /* ticket_lifetime_hint + ticket_length + ticket */
1848 if (ticklen + 6 != n)
1849 {
1850 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1851 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1852 goto f_err;
1853 }
1854 if (s->session->tlsext_tick)
1855 {
1856 OPENSSL_free(s->session->tlsext_tick);
1857 s->session->tlsext_ticklen = 0;
1858 }
1859 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1860 if (!s->session->tlsext_tick)
1861 {
1862 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1863 goto err;
1864 }
1865 memcpy(s->session->tlsext_tick, p, ticklen);
1866 s->session->tlsext_ticklen = ticklen;
1867 /* There are two ways to detect a resumed ticket sesion.
1868 * One is to set an appropriate session ID and then the server
1869 * must return a match in ServerHello. This allows the normal
1870 * client session ID matching to work and we know much
1871 * earlier that the ticket has been accepted.
1872 *
1873 * The other way is to set zero length session ID when the
1874 * ticket is presented and rely on the handshake to determine
1875 * session resumption.
1876 *
1877 * We choose the former approach because this fits in with
1878 * assumptions elsewhere in OpenSSL. The session ID is set
1879 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1880 * ticket.
1881 */
1882 EVP_Digest(p, ticklen,
1883 s->session->session_id, &s->session->session_id_length,
1884#ifndef OPENSSL_NO_SHA256
1885 EVP_sha256(), NULL);
1886#else
1887 EVP_sha1(), NULL);
1888#endif
1889 ret=1;
1890 return(ret);
1891f_err:
1892 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1893err:
1894 return(-1);
1895 }
1896
1897int ssl3_get_cert_status(SSL *s)
1898 {
1899 int ok, al;
1900 unsigned long resplen,n;
1901 const unsigned char *p;
1902
1903 n=s->method->ssl_get_message(s,
1904 SSL3_ST_CR_CERT_STATUS_A,
1905 SSL3_ST_CR_CERT_STATUS_B,
1906 SSL3_MT_CERTIFICATE_STATUS,
1907 16384,
1908 &ok);
1909
1910 if (!ok) return((int)n);
1911 if (n < 4)
1912 {
1913 /* need at least status type + length */
1914 al = SSL_AD_DECODE_ERROR;
1915 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1916 goto f_err;
1917 }
1918 p = (unsigned char *)s->init_msg;
1919 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1920 {
1921 al = SSL_AD_DECODE_ERROR;
1922 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1923 goto f_err;
1924 }
1925 n2l3(p, resplen);
1926 if (resplen + 4 != n)
1927 {
1928 al = SSL_AD_DECODE_ERROR;
1929 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1930 goto f_err;
1931 }
1932 if (s->tlsext_ocsp_resp)
1933 OPENSSL_free(s->tlsext_ocsp_resp);
1934 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1935 if (!s->tlsext_ocsp_resp)
1936 {
1937 al = SSL_AD_INTERNAL_ERROR;
1938 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1939 goto f_err;
1940 }
1941 s->tlsext_ocsp_resplen = resplen;
1942 if (s->ctx->tlsext_status_cb)
1943 {
1944 int ret;
1945 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1946 if (ret == 0)
1947 {
1948 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1949 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1950 goto f_err;
1951 }
1952 if (ret < 0)
1953 {
1954 al = SSL_AD_INTERNAL_ERROR;
1955 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1956 goto f_err;
1957 }
1958 }
1959 return 1;
1960f_err:
1961 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1962 return(-1);
1963 }
1964#endif
1965
1966int ssl3_get_server_done(SSL *s)
1967 {
1968 int ok,ret=0;
1969 long n;
1970
1971 n=s->method->ssl_get_message(s,
1972 SSL3_ST_CR_SRVR_DONE_A,
1973 SSL3_ST_CR_SRVR_DONE_B,
1974 SSL3_MT_SERVER_DONE,
1975 30, /* should be very small, like 0 :-) */
1976 &ok);
1977
1978 if (!ok) return((int)n);
1979 if (n > 0)
1980 {
1981 /* should contain no data */
1982 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1983 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1984 return -1;
1985 }
1986 ret=1;
1987 return(ret);
1988 }
1989
1990
1991int ssl3_send_client_key_exchange(SSL *s)
1992 {
1993 unsigned char *p,*d;
1994 int n;
1995 unsigned long alg_k;
1996#ifndef OPENSSL_NO_RSA
1997 unsigned char *q;
1998 EVP_PKEY *pkey=NULL;
1999#endif
2000#ifndef OPENSSL_NO_KRB5
2001 KSSL_ERR kssl_err;
2002#endif /* OPENSSL_NO_KRB5 */
2003#ifndef OPENSSL_NO_ECDH
2004 EC_KEY *clnt_ecdh = NULL;
2005 const EC_POINT *srvr_ecpoint = NULL;
2006 EVP_PKEY *srvr_pub_pkey = NULL;
2007 unsigned char *encodedPoint = NULL;
2008 int encoded_pt_len = 0;
2009 BN_CTX * bn_ctx = NULL;
2010#endif
2011
2012 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2013 {
2014 d=(unsigned char *)s->init_buf->data;
2015 p= &(d[4]);
2016
2017 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2018
2019 /* Fool emacs indentation */
2020 if (0) {}
2021#ifndef OPENSSL_NO_RSA
2022 else if (alg_k & SSL_kRSA)
2023 {
2024 RSA *rsa;
2025 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2026
2027 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2028 rsa=s->session->sess_cert->peer_rsa_tmp;
2029 else
2030 {
2031 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2032 if ((pkey == NULL) ||
2033 (pkey->type != EVP_PKEY_RSA) ||
2034 (pkey->pkey.rsa == NULL))
2035 {
2036 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2037 goto err;
2038 }
2039 rsa=pkey->pkey.rsa;
2040 EVP_PKEY_free(pkey);
2041 }
2042
2043 tmp_buf[0]=s->client_version>>8;
2044 tmp_buf[1]=s->client_version&0xff;
2045 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2046 goto err;
2047
2048 s->session->master_key_length=sizeof tmp_buf;
2049
2050 q=p;
2051 /* Fix buf for TLS and beyond */
2052 if (s->version > SSL3_VERSION)
2053 p+=2;
2054 n=RSA_public_encrypt(sizeof tmp_buf,
2055 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2056#ifdef PKCS1_CHECK
2057 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2058 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2059#endif
2060 if (n <= 0)
2061 {
2062 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2063 goto err;
2064 }
2065
2066 /* Fix buf for TLS and beyond */
2067 if (s->version > SSL3_VERSION)
2068 {
2069 s2n(n,q);
2070 n+=2;
2071 }
2072
2073 s->session->master_key_length=
2074 s->method->ssl3_enc->generate_master_secret(s,
2075 s->session->master_key,
2076 tmp_buf,sizeof tmp_buf);
2077 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2078 }
2079#endif
2080#ifndef OPENSSL_NO_KRB5
2081 else if (alg_k & SSL_kKRB5)
2082 {
2083 krb5_error_code krb5rc;
2084 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2085 /* krb5_data krb5_ap_req; */
2086 krb5_data *enc_ticket;
2087 krb5_data authenticator, *authp = NULL;
2088 EVP_CIPHER_CTX ciph_ctx;
2089 const EVP_CIPHER *enc = NULL;
2090 unsigned char iv[EVP_MAX_IV_LENGTH];
2091 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2092 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2093 + EVP_MAX_IV_LENGTH];
2094 int padl, outl = sizeof(epms);
2095
2096 EVP_CIPHER_CTX_init(&ciph_ctx);
2097
2098#ifdef KSSL_DEBUG
2099 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2100 alg_k, SSL_kKRB5);
2101#endif /* KSSL_DEBUG */
2102
2103 authp = NULL;
2104#ifdef KRB5SENDAUTH
2105 if (KRB5SENDAUTH) authp = &authenticator;
2106#endif /* KRB5SENDAUTH */
2107
2108 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2109 &kssl_err);
2110 enc = kssl_map_enc(kssl_ctx->enctype);
2111 if (enc == NULL)
2112 goto err;
2113#ifdef KSSL_DEBUG
2114 {
2115 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2116 if (krb5rc && kssl_err.text)
2117 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2118 }
2119#endif /* KSSL_DEBUG */
2120
2121 if (krb5rc)
2122 {
2123 ssl3_send_alert(s,SSL3_AL_FATAL,
2124 SSL_AD_HANDSHAKE_FAILURE);
2125 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2126 kssl_err.reason);
2127 goto err;
2128 }
2129
2130 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2131 ** in place of RFC 2712 KerberosWrapper, as in:
2132 **
2133 ** Send ticket (copy to *p, set n = length)
2134 ** n = krb5_ap_req.length;
2135 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2136 ** if (krb5_ap_req.data)
2137 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2138 **
2139 ** Now using real RFC 2712 KerberosWrapper
2140 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2141 ** Note: 2712 "opaque" types are here replaced
2142 ** with a 2-byte length followed by the value.
2143 ** Example:
2144 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2145 ** Where "xx xx" = length bytes. Shown here with
2146 ** optional authenticator omitted.
2147 */
2148
2149 /* KerberosWrapper.Ticket */
2150 s2n(enc_ticket->length,p);
2151 memcpy(p, enc_ticket->data, enc_ticket->length);
2152 p+= enc_ticket->length;
2153 n = enc_ticket->length + 2;
2154
2155 /* KerberosWrapper.Authenticator */
2156 if (authp && authp->length)
2157 {
2158 s2n(authp->length,p);
2159 memcpy(p, authp->data, authp->length);
2160 p+= authp->length;
2161 n+= authp->length + 2;
2162
2163 free(authp->data);
2164 authp->data = NULL;
2165 authp->length = 0;
2166 }
2167 else
2168 {
2169 s2n(0,p);/* null authenticator length */
2170 n+=2;
2171 }
2172
2173 tmp_buf[0]=s->client_version>>8;
2174 tmp_buf[1]=s->client_version&0xff;
2175 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2176 goto err;
2177
2178 /* 20010420 VRS. Tried it this way; failed.
2179 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2180 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2181 ** kssl_ctx->length);
2182 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2183 */
2184
2185 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2186 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2187 kssl_ctx->key,iv);
2188 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2189 sizeof tmp_buf);
2190 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2191 outl += padl;
2192 if (outl > (int)sizeof epms)
2193 {
2194 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2195 goto err;
2196 }
2197 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2198
2199 /* KerberosWrapper.EncryptedPreMasterSecret */
2200 s2n(outl,p);
2201 memcpy(p, epms, outl);
2202 p+=outl;
2203 n+=outl + 2;
2204
2205 s->session->master_key_length=
2206 s->method->ssl3_enc->generate_master_secret(s,
2207 s->session->master_key,
2208 tmp_buf, sizeof tmp_buf);
2209
2210 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2211 OPENSSL_cleanse(epms, outl);
2212 }
2213#endif
2214#ifndef OPENSSL_NO_DH
2215 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2216 {
2217 DH *dh_srvr,*dh_clnt;
2218
2219 if (s->session->sess_cert == NULL)
2220 {
2221 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2222 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2223 goto err;
2224 }
2225
2226 if (s->session->sess_cert->peer_dh_tmp != NULL)
2227 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2228 else
2229 {
2230 /* we get them from the cert */
2231 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2232 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2233 goto err;
2234 }
2235
2236 /* generate a new random key */
2237 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2238 {
2239 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2240 goto err;
2241 }
2242 if (!DH_generate_key(dh_clnt))
2243 {
2244 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2245 goto err;
2246 }
2247
2248 /* use the 'p' output buffer for the DH key, but
2249 * make sure to clear it out afterwards */
2250
2251 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2252
2253 if (n <= 0)
2254 {
2255 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2256 goto err;
2257 }
2258
2259 /* generate master key from the result */
2260 s->session->master_key_length=
2261 s->method->ssl3_enc->generate_master_secret(s,
2262 s->session->master_key,p,n);
2263 /* clean up */
2264 memset(p,0,n);
2265
2266 /* send off the data */
2267 n=BN_num_bytes(dh_clnt->pub_key);
2268 s2n(n,p);
2269 BN_bn2bin(dh_clnt->pub_key,p);
2270 n+=2;
2271
2272 DH_free(dh_clnt);
2273
2274 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2275 }
2276#endif
2277
2278#ifndef OPENSSL_NO_ECDH
2279 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2280 {
2281 const EC_GROUP *srvr_group = NULL;
2282 EC_KEY *tkey;
2283 int ecdh_clnt_cert = 0;
2284 int field_size = 0;
2285
2286 /* Did we send out the client's
2287 * ECDH share for use in premaster
2288 * computation as part of client certificate?
2289 * If so, set ecdh_clnt_cert to 1.
2290 */
2291 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2292 {
2293 /* XXX: For now, we do not support client
2294 * authentication using ECDH certificates.
2295 * To add such support, one needs to add
2296 * code that checks for appropriate
2297 * conditions and sets ecdh_clnt_cert to 1.
2298 * For example, the cert have an ECC
2299 * key on the same curve as the server's
2300 * and the key should be authorized for
2301 * key agreement.
2302 *
2303 * One also needs to add code in ssl3_connect
2304 * to skip sending the certificate verify
2305 * message.
2306 *
2307 * if ((s->cert->key->privatekey != NULL) &&
2308 * (s->cert->key->privatekey->type ==
2309 * EVP_PKEY_EC) && ...)
2310 * ecdh_clnt_cert = 1;
2311 */
2312 }
2313
2314 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2315 {
2316 tkey = s->session->sess_cert->peer_ecdh_tmp;
2317 }
2318 else
2319 {
2320 /* Get the Server Public Key from Cert */
2321 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2322 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2323 if ((srvr_pub_pkey == NULL) ||
2324 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2325 (srvr_pub_pkey->pkey.ec == NULL))
2326 {
2327 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2328 ERR_R_INTERNAL_ERROR);
2329 goto err;
2330 }
2331
2332 tkey = srvr_pub_pkey->pkey.ec;
2333 }
2334
2335 srvr_group = EC_KEY_get0_group(tkey);
2336 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2337
2338 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2339 {
2340 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2341 ERR_R_INTERNAL_ERROR);
2342 goto err;
2343 }
2344
2345 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2346 {
2347 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2348 goto err;
2349 }
2350
2351 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2352 {
2353 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2354 goto err;
2355 }
2356 if (ecdh_clnt_cert)
2357 {
2358 /* Reuse key info from our certificate
2359 * We only need our private key to perform
2360 * the ECDH computation.
2361 */
2362 const BIGNUM *priv_key;
2363 tkey = s->cert->key->privatekey->pkey.ec;
2364 priv_key = EC_KEY_get0_private_key(tkey);
2365 if (priv_key == NULL)
2366 {
2367 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2368 goto err;
2369 }
2370 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2371 {
2372 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2373 goto err;
2374 }
2375 }
2376 else
2377 {
2378 /* Generate a new ECDH key pair */
2379 if (!(EC_KEY_generate_key(clnt_ecdh)))
2380 {
2381 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2382 goto err;
2383 }
2384 }
2385
2386 /* use the 'p' output buffer for the ECDH key, but
2387 * make sure to clear it out afterwards
2388 */
2389
2390 field_size = EC_GROUP_get_degree(srvr_group);
2391 if (field_size <= 0)
2392 {
2393 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2394 ERR_R_ECDH_LIB);
2395 goto err;
2396 }
2397 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2398 if (n <= 0)
2399 {
2400 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2401 ERR_R_ECDH_LIB);
2402 goto err;
2403 }
2404
2405 /* generate master key from the result */
2406 s->session->master_key_length = s->method->ssl3_enc \
2407 -> generate_master_secret(s,
2408 s->session->master_key,
2409 p, n);
2410
2411 memset(p, 0, n); /* clean up */
2412
2413 if (ecdh_clnt_cert)
2414 {
2415 /* Send empty client key exch message */
2416 n = 0;
2417 }
2418 else
2419 {
2420 /* First check the size of encoding and
2421 * allocate memory accordingly.
2422 */
2423 encoded_pt_len =
2424 EC_POINT_point2oct(srvr_group,
2425 EC_KEY_get0_public_key(clnt_ecdh),
2426 POINT_CONVERSION_UNCOMPRESSED,
2427 NULL, 0, NULL);
2428
2429 encodedPoint = (unsigned char *)
2430 OPENSSL_malloc(encoded_pt_len *
2431 sizeof(unsigned char));
2432 bn_ctx = BN_CTX_new();
2433 if ((encodedPoint == NULL) ||
2434 (bn_ctx == NULL))
2435 {
2436 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2437 goto err;
2438 }
2439
2440 /* Encode the public key */
2441 n = EC_POINT_point2oct(srvr_group,
2442 EC_KEY_get0_public_key(clnt_ecdh),
2443 POINT_CONVERSION_UNCOMPRESSED,
2444 encodedPoint, encoded_pt_len, bn_ctx);
2445
2446 *p = n; /* length of encoded point */
2447 /* Encoded point will be copied here */
2448 p += 1;
2449 /* copy the point */
2450 memcpy((unsigned char *)p, encodedPoint, n);
2451 /* increment n to account for length field */
2452 n += 1;
2453 }
2454
2455 /* Free allocated memory */
2456 BN_CTX_free(bn_ctx);
2457 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2458 if (clnt_ecdh != NULL)
2459 EC_KEY_free(clnt_ecdh);
2460 EVP_PKEY_free(srvr_pub_pkey);
2461 }
2462#endif /* !OPENSSL_NO_ECDH */
2463 else if (alg_k & SSL_kGOST)
2464 {
2465 /* GOST key exchange message creation */
2466 EVP_PKEY_CTX *pkey_ctx;
2467 X509 *peer_cert;
2468 size_t msglen;
2469 unsigned int md_len;
2470 int keytype;
2471 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2472 EVP_MD_CTX *ukm_hash;
2473 EVP_PKEY *pub_key;
2474
2475 /* Get server sertificate PKEY and create ctx from it */
2476 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2477 if (!peer_cert)
2478 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2479 if (!peer_cert) {
2480 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2481 goto err;
2482 }
2483
2484 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2485 /* If we have send a certificate, and certificate key
2486
2487 * parameters match those of server certificate, use
2488 * certificate key for key exchange
2489 */
2490
2491 /* Otherwise, generate ephemeral key pair */
2492
2493 EVP_PKEY_encrypt_init(pkey_ctx);
2494 /* Generate session key */
2495 RAND_bytes(premaster_secret,32);
2496 /* If we have client certificate, use its secret as peer key */
2497 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2498 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2499 /* If there was an error - just ignore it. Ephemeral key
2500 * would be used
2501 */
2502 ERR_clear_error();
2503 }
2504 }
2505 /* Compute shared IV and store it in algorithm-specific
2506 * context data */
2507 ukm_hash = EVP_MD_CTX_create();
2508 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2509 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2510 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2511 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2512 EVP_MD_CTX_destroy(ukm_hash);
2513 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2514 8,shared_ukm)<0) {
2515 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2516 SSL_R_LIBRARY_BUG);
2517 goto err;
2518 }
2519 /* Make GOST keytransport blob message */
2520 /*Encapsulate it into sequence */
2521 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2522 msglen=255;
2523 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2524 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2525 SSL_R_LIBRARY_BUG);
2526 goto err;
2527 }
2528 if (msglen >= 0x80)
2529 {
2530 *(p++)=0x81;
2531 *(p++)= msglen & 0xff;
2532 n=msglen+3;
2533 }
2534 else
2535 {
2536 *(p++)= msglen & 0xff;
2537 n=msglen+2;
2538 }
2539 memcpy(p, tmp, msglen);
2540 /* Check if pubkey from client certificate was used */
2541 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2542 {
2543 /* Set flag "skip certificate verify" */
2544 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2545 }
2546 EVP_PKEY_CTX_free(pkey_ctx);
2547 s->session->master_key_length=
2548 s->method->ssl3_enc->generate_master_secret(s,
2549 s->session->master_key,premaster_secret,32);
2550 EVP_PKEY_free(pub_key);
2551
2552 }
2553#ifndef OPENSSL_NO_PSK
2554 else if (alg_k & SSL_kPSK)
2555 {
2556 char identity[PSK_MAX_IDENTITY_LEN];
2557 unsigned char *t = NULL;
2558 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2559 unsigned int pre_ms_len = 0, psk_len = 0;
2560 int psk_err = 1;
2561
2562 n = 0;
2563 if (s->psk_client_callback == NULL)
2564 {
2565 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2566 SSL_R_PSK_NO_CLIENT_CB);
2567 goto err;
2568 }
2569
2570 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2571 identity, PSK_MAX_IDENTITY_LEN,
2572 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2573 if (psk_len > PSK_MAX_PSK_LEN)
2574 {
2575 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2576 ERR_R_INTERNAL_ERROR);
2577 goto psk_err;
2578 }
2579 else if (psk_len == 0)
2580 {
2581 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2582 SSL_R_PSK_IDENTITY_NOT_FOUND);
2583 goto psk_err;
2584 }
2585
2586 /* create PSK pre_master_secret */
2587 pre_ms_len = 2+psk_len+2+psk_len;
2588 t = psk_or_pre_ms;
2589 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2590 s2n(psk_len, t);
2591 memset(t, 0, psk_len);
2592 t+=psk_len;
2593 s2n(psk_len, t);
2594
2595 if (s->session->psk_identity_hint != NULL)
2596 OPENSSL_free(s->session->psk_identity_hint);
2597 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2598 if (s->ctx->psk_identity_hint != NULL &&
2599 s->session->psk_identity_hint == NULL)
2600 {
2601 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2602 ERR_R_MALLOC_FAILURE);
2603 goto psk_err;
2604 }
2605
2606 if (s->session->psk_identity != NULL)
2607 OPENSSL_free(s->session->psk_identity);
2608 s->session->psk_identity = BUF_strdup(identity);
2609 if (s->session->psk_identity == NULL)
2610 {
2611 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2612 ERR_R_MALLOC_FAILURE);
2613 goto psk_err;
2614 }
2615
2616 s->session->master_key_length =
2617 s->method->ssl3_enc->generate_master_secret(s,
2618 s->session->master_key,
2619 psk_or_pre_ms, pre_ms_len);
2620 n = strlen(identity);
2621 s2n(n, p);
2622 memcpy(p, identity, n);
2623 n+=2;
2624 psk_err = 0;
2625 psk_err:
2626 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2627 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2628 if (psk_err != 0)
2629 {
2630 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2631 goto err;
2632 }
2633 }
2634#endif
2635 else
2636 {
2637 ssl3_send_alert(s, SSL3_AL_FATAL,
2638 SSL_AD_HANDSHAKE_FAILURE);
2639 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2640 ERR_R_INTERNAL_ERROR);
2641 goto err;
2642 }
2643
2644 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2645 l2n3(n,d);
2646
2647 s->state=SSL3_ST_CW_KEY_EXCH_B;
2648 /* number of bytes to write */
2649 s->init_num=n+4;
2650 s->init_off=0;
2651 }
2652
2653 /* SSL3_ST_CW_KEY_EXCH_B */
2654 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2655err:
2656#ifndef OPENSSL_NO_ECDH
2657 BN_CTX_free(bn_ctx);
2658 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2659 if (clnt_ecdh != NULL)
2660 EC_KEY_free(clnt_ecdh);
2661 EVP_PKEY_free(srvr_pub_pkey);
2662#endif
2663 return(-1);
2664 }
2665
2666int ssl3_send_client_verify(SSL *s)
2667 {
2668 unsigned char *p,*d;
2669 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2670 EVP_PKEY *pkey;
2671 EVP_PKEY_CTX *pctx=NULL;
2672#ifndef OPENSSL_NO_RSA
2673 unsigned u=0;
2674#endif
2675 unsigned long n;
2676 int j;
2677
2678 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2679 {
2680 d=(unsigned char *)s->init_buf->data;
2681 p= &(d[4]);
2682 pkey=s->cert->key->privatekey;
2683/* Create context from key and test if sha1 is allowed as digest */
2684 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2685 EVP_PKEY_sign_init(pctx);
2686 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2687 {
2688 s->method->ssl3_enc->cert_verify_mac(s,
2689 NID_sha1,
2690 &(data[MD5_DIGEST_LENGTH]));
2691 }
2692 else
2693 {
2694 ERR_clear_error();
2695 }
2696#ifndef OPENSSL_NO_RSA
2697 if (pkey->type == EVP_PKEY_RSA)
2698 {
2699 s->method->ssl3_enc->cert_verify_mac(s,
2700 NID_md5,
2701 &(data[0]));
2702 if (RSA_sign(NID_md5_sha1, data,
2703 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2704 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2705 {
2706 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2707 goto err;
2708 }
2709 s2n(u,p);
2710 n=u+2;
2711 }
2712 else
2713#endif
2714#ifndef OPENSSL_NO_DSA
2715 if (pkey->type == EVP_PKEY_DSA)
2716 {
2717 if (!DSA_sign(pkey->save_type,
2718 &(data[MD5_DIGEST_LENGTH]),
2719 SHA_DIGEST_LENGTH,&(p[2]),
2720 (unsigned int *)&j,pkey->pkey.dsa))
2721 {
2722 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2723 goto err;
2724 }
2725 s2n(j,p);
2726 n=j+2;
2727 }
2728 else
2729#endif
2730#ifndef OPENSSL_NO_ECDSA
2731 if (pkey->type == EVP_PKEY_EC)
2732 {
2733 if (!ECDSA_sign(pkey->save_type,
2734 &(data[MD5_DIGEST_LENGTH]),
2735 SHA_DIGEST_LENGTH,&(p[2]),
2736 (unsigned int *)&j,pkey->pkey.ec))
2737 {
2738 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2739 ERR_R_ECDSA_LIB);
2740 goto err;
2741 }
2742 s2n(j,p);
2743 n=j+2;
2744 }
2745 else
2746#endif
2747 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2748 {
2749 unsigned char signbuf[64];
2750 int i;
2751 size_t sigsize=64;
2752 s->method->ssl3_enc->cert_verify_mac(s,
2753 NID_id_GostR3411_94,
2754 data);
2755 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2756 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2757 ERR_R_INTERNAL_ERROR);
2758 goto err;
2759 }
2760 for (i=63,j=0; i>=0; j++, i--) {
2761 p[2+j]=signbuf[i];
2762 }
2763 s2n(j,p);
2764 n=j+2;
2765 }
2766 else
2767 {
2768 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2769 goto err;
2770 }
2771 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2772 l2n3(n,d);
2773
2774 s->state=SSL3_ST_CW_CERT_VRFY_B;
2775 s->init_num=(int)n+4;
2776 s->init_off=0;
2777 }
2778 EVP_PKEY_CTX_free(pctx);
2779 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2780err:
2781 EVP_PKEY_CTX_free(pctx);
2782 return(-1);
2783 }
2784
2785int ssl3_send_client_certificate(SSL *s)
2786 {
2787 X509 *x509=NULL;
2788 EVP_PKEY *pkey=NULL;
2789 int i;
2790 unsigned long l;
2791
2792 if (s->state == SSL3_ST_CW_CERT_A)
2793 {
2794 if ((s->cert == NULL) ||
2795 (s->cert->key->x509 == NULL) ||
2796 (s->cert->key->privatekey == NULL))
2797 s->state=SSL3_ST_CW_CERT_B;
2798 else
2799 s->state=SSL3_ST_CW_CERT_C;
2800 }
2801
2802 /* We need to get a client cert */
2803 if (s->state == SSL3_ST_CW_CERT_B)
2804 {
2805 /* If we get an error, we need to
2806 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2807 * We then get retied later */
2808 i=0;
2809 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2810 if (i < 0)
2811 {
2812 s->rwstate=SSL_X509_LOOKUP;
2813 return(-1);
2814 }
2815 s->rwstate=SSL_NOTHING;
2816 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2817 {
2818 s->state=SSL3_ST_CW_CERT_B;
2819 if ( !SSL_use_certificate(s,x509) ||
2820 !SSL_use_PrivateKey(s,pkey))
2821 i=0;
2822 }
2823 else if (i == 1)
2824 {
2825 i=0;
2826 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2827 }
2828
2829 if (x509 != NULL) X509_free(x509);
2830 if (pkey != NULL) EVP_PKEY_free(pkey);
2831 if (i == 0)
2832 {
2833 if (s->version == SSL3_VERSION)
2834 {
2835 s->s3->tmp.cert_req=0;
2836 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2837 return(1);
2838 }
2839 else
2840 {
2841 s->s3->tmp.cert_req=2;
2842 }
2843 }
2844
2845 /* Ok, we have a cert */
2846 s->state=SSL3_ST_CW_CERT_C;
2847 }
2848
2849 if (s->state == SSL3_ST_CW_CERT_C)
2850 {
2851 s->state=SSL3_ST_CW_CERT_D;
2852 l=ssl3_output_cert_chain(s,
2853 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2854 s->init_num=(int)l;
2855 s->init_off=0;
2856 }
2857 /* SSL3_ST_CW_CERT_D */
2858 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2859 }
2860
2861#define has_bits(i,m) (((i)&(m)) == (m))
2862
2863int ssl3_check_cert_and_algorithm(SSL *s)
2864 {
2865 int i,idx;
2866 long alg_k,alg_a;
2867 EVP_PKEY *pkey=NULL;
2868 SESS_CERT *sc;
2869#ifndef OPENSSL_NO_RSA
2870 RSA *rsa;
2871#endif
2872#ifndef OPENSSL_NO_DH
2873 DH *dh;
2874#endif
2875
2876 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2877 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2878
2879 /* we don't have a certificate */
2880 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2881 return(1);
2882
2883 sc=s->session->sess_cert;
2884 if (sc == NULL)
2885 {
2886 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2887 goto err;
2888 }
2889
2890#ifndef OPENSSL_NO_RSA
2891 rsa=s->session->sess_cert->peer_rsa_tmp;
2892#endif
2893#ifndef OPENSSL_NO_DH
2894 dh=s->session->sess_cert->peer_dh_tmp;
2895#endif
2896
2897 /* This is the passed certificate */
2898
2899 idx=sc->peer_cert_type;
2900#ifndef OPENSSL_NO_ECDH
2901 if (idx == SSL_PKEY_ECC)
2902 {
2903 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2904 s->s3->tmp.new_cipher) == 0)
2905 { /* check failed */
2906 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2907 goto f_err;
2908 }
2909 else
2910 {
2911 return 1;
2912 }
2913 }
2914#endif
2915 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2916 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2917 EVP_PKEY_free(pkey);
2918
2919
2920 /* Check that we have a certificate if we require one */
2921 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2922 {
2923 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2924 goto f_err;
2925 }
2926#ifndef OPENSSL_NO_DSA
2927 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2928 {
2929 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2930 goto f_err;
2931 }
2932#endif
2933#ifndef OPENSSL_NO_RSA
2934 if ((alg_k & SSL_kRSA) &&
2935 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2936 {
2937 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2938 goto f_err;
2939 }
2940#endif
2941#ifndef OPENSSL_NO_DH
2942 if ((alg_k & SSL_kEDH) &&
2943 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2944 {
2945 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2946 goto f_err;
2947 }
2948 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2949 {
2950 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2951 goto f_err;
2952 }
2953#ifndef OPENSSL_NO_DSA
2954 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2955 {
2956 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2957 goto f_err;
2958 }
2959#endif
2960#endif
2961
2962 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2963 {
2964#ifndef OPENSSL_NO_RSA
2965 if (alg_k & SSL_kRSA)
2966 {
2967 if (rsa == NULL
2968 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2969 {
2970 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2971 goto f_err;
2972 }
2973 }
2974 else
2975#endif
2976#ifndef OPENSSL_NO_DH
2977 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2978 {
2979 if (dh == NULL
2980 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2981 {
2982 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2983 goto f_err;
2984 }
2985 }
2986 else
2987#endif
2988 {
2989 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2990 goto f_err;
2991 }
2992 }
2993 return(1);
2994f_err:
2995 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2996err:
2997 return(0);
2998 }
2999
3000/* Check to see if handshake is full or resumed. Usually this is just a
3001 * case of checking to see if a cache hit has occurred. In the case of
3002 * session tickets we have to check the next message to be sure.
3003 */
3004
3005#ifndef OPENSSL_NO_TLSEXT
3006int ssl3_check_finished(SSL *s)
3007 {
3008 int ok;
3009 long n;
3010 /* If we have no ticket it cannot be a resumed session. */
3011 if (!s->session->tlsext_tick)
3012 return 1;
3013 /* this function is called when we really expect a Certificate
3014 * message, so permit appropriate message length */
3015 n=s->method->ssl_get_message(s,
3016 SSL3_ST_CR_CERT_A,
3017 SSL3_ST_CR_CERT_B,
3018 -1,
3019 s->max_cert_list,
3020 &ok);
3021 if (!ok) return((int)n);
3022 s->s3->tmp.reuse_message = 1;
3023 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3024 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3025 return 2;
3026
3027 return 1;
3028 }
3029#endif
3030
3031int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3032 {
3033 int i = 0;
3034#ifndef OPENSSL_NO_ENGINE
3035 if (s->ctx->client_cert_engine)
3036 {
3037 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3038 SSL_get_client_CA_list(s),
3039 px509, ppkey, NULL, NULL, NULL);
3040 if (i != 0)
3041 return i;
3042 }
3043#endif
3044 if (s->ctx->client_cert_cb)
3045 i = s->ctx->client_cert_cb(s,px509,ppkey);
3046 return i;
3047 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-26 22:34:42 +0000