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[netbsd-mini2440.git] / crypto / external / bsd / openssl / dist / ssl / s3_clnt.c
blob3d40ba41fac58179b27ba1a6ec8966b795c0279b
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
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
169
170 static 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
178 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
179 ssl_undefined_function,
180 ssl3_connect,
181 ssl3_get_client_method)
182
183 int ssl3_connect(SSL *s)
184 {
185 BUF_MEM *buf=NULL;
186 unsigned long Time=(unsigned long)time(NULL);
187 long num1;
188 void (*cb)(const SSL *ssl,int type,int val)=NULL;
189 int ret= -1;
190 int new_state,state,skip=0;
191
192 RAND_add(&Time,sizeof(Time),0);
193 ERR_clear_error();
194 clear_sys_error();
195
196 if (s->info_callback != NULL)
197 cb=s->info_callback;
198 else if (s->ctx->info_callback != NULL)
199 cb=s->ctx->info_callback;
200
201 s->in_handshake++;
202 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
203
204 for (;;)
205 {
206 state=s->state;
207
208 switch(s->state)
209 {
210 case SSL_ST_RENEGOTIATE:
211 s->new_session=1;
212 s->state=SSL_ST_CONNECT;
213 s->ctx->stats.sess_connect_renegotiate++;
214 /* break */
215 case SSL_ST_BEFORE:
216 case SSL_ST_CONNECT:
217 case SSL_ST_BEFORE|SSL_ST_CONNECT:
218 case SSL_ST_OK|SSL_ST_CONNECT:
219
220 s->server=0;
221 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
222
223 if ((s->version & 0xff00 ) != 0x0300)
224 {
225 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
226 ret = -1;
227 goto end;
228 }
229
230 /* s->version=SSL3_VERSION; */
231 s->type=SSL_ST_CONNECT;
232
233 if (s->init_buf == NULL)
234 {
235 if ((buf=BUF_MEM_new()) == NULL)
236 {
237 ret= -1;
238 goto end;
239 }
240 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
241 {
242 ret= -1;
243 goto end;
244 }
245 s->init_buf=buf;
246 buf=NULL;
247 }
248
249 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
250
251 /* setup buffing BIO */
252 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
253
254 /* don't push the buffering BIO quite yet */
255
256 ssl3_init_finished_mac(s);
257
258 s->state=SSL3_ST_CW_CLNT_HELLO_A;
259 s->ctx->stats.sess_connect++;
260 s->init_num=0;
261 break;
262
263 case SSL3_ST_CW_CLNT_HELLO_A:
264 case SSL3_ST_CW_CLNT_HELLO_B:
265
266 s->shutdown=0;
267 ret=ssl3_client_hello(s);
268 if (ret <= 0) goto end;
269 s->state=SSL3_ST_CR_SRVR_HELLO_A;
270 s->init_num=0;
271
272 /* turn on buffering for the next lot of output */
273 if (s->bbio != s->wbio)
274 s->wbio=BIO_push(s->bbio,s->wbio);
275
276 break;
277
278 case SSL3_ST_CR_SRVR_HELLO_A:
279 case SSL3_ST_CR_SRVR_HELLO_B:
280 ret=ssl3_get_server_hello(s);
281 if (ret <= 0) goto end;
282
283 if (s->hit)
284 s->state=SSL3_ST_CR_FINISHED_A;
285 else
286 s->state=SSL3_ST_CR_CERT_A;
287 s->init_num=0;
288 break;
289
290 case SSL3_ST_CR_CERT_A:
291 case SSL3_ST_CR_CERT_B:
292 #ifndef OPENSSL_NO_TLSEXT
293 ret=ssl3_check_finished(s);
294 if (ret <= 0) goto end;
295 if (ret == 2)
296 {
297 s->hit = 1;
298 if (s->tlsext_ticket_expected)
299 s->state=SSL3_ST_CR_SESSION_TICKET_A;
300 else
301 s->state=SSL3_ST_CR_FINISHED_A;
302 s->init_num=0;
303 break;
304 }
305 #endif
306 /* Check if it is anon DH/ECDH */
307 /* or PSK */
308 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
309 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
310 {
311 ret=ssl3_get_server_certificate(s);
312 if (ret <= 0) goto end;
313 #ifndef OPENSSL_NO_TLSEXT
314 if (s->tlsext_status_expected)
315 s->state=SSL3_ST_CR_CERT_STATUS_A;
316 else
317 s->state=SSL3_ST_CR_KEY_EXCH_A;
318 }
319 else
320 {
321 skip = 1;
322 s->state=SSL3_ST_CR_KEY_EXCH_A;
323 }
324 #else
325 }
326 else
327 skip=1;
328
329 s->state=SSL3_ST_CR_KEY_EXCH_A;
330 #endif
331 s->init_num=0;
332 break;
333
334 case SSL3_ST_CR_KEY_EXCH_A:
335 case SSL3_ST_CR_KEY_EXCH_B:
336 ret=ssl3_get_key_exchange(s);
337 if (ret <= 0) goto end;
338 s->state=SSL3_ST_CR_CERT_REQ_A;
339 s->init_num=0;
340
341 /* at this point we check that we have the
342 * required stuff from the server */
343 if (!ssl3_check_cert_and_algorithm(s))
344 {
345 ret= -1;
346 goto end;
347 }
348 break;
349
350 case SSL3_ST_CR_CERT_REQ_A:
351 case SSL3_ST_CR_CERT_REQ_B:
352 ret=ssl3_get_certificate_request(s);
353 if (ret <= 0) goto end;
354 s->state=SSL3_ST_CR_SRVR_DONE_A;
355 s->init_num=0;
356 break;
357
358 case SSL3_ST_CR_SRVR_DONE_A:
359 case SSL3_ST_CR_SRVR_DONE_B:
360 ret=ssl3_get_server_done(s);
361 if (ret <= 0) goto end;
362 if (s->s3->tmp.cert_req)
363 s->state=SSL3_ST_CW_CERT_A;
364 else
365 s->state=SSL3_ST_CW_KEY_EXCH_A;
366 s->init_num=0;
367
368 break;
369
370 case SSL3_ST_CW_CERT_A:
371 case SSL3_ST_CW_CERT_B:
372 case SSL3_ST_CW_CERT_C:
373 case SSL3_ST_CW_CERT_D:
374 ret=ssl3_send_client_certificate(s);
375 if (ret <= 0) goto end;
376 s->state=SSL3_ST_CW_KEY_EXCH_A;
377 s->init_num=0;
378 break;
379
380 case SSL3_ST_CW_KEY_EXCH_A:
381 case SSL3_ST_CW_KEY_EXCH_B:
382 ret=ssl3_send_client_key_exchange(s);
383 if (ret <= 0) goto end;
384 /* EAY EAY EAY need to check for DH fix cert
385 * sent back */
386 /* For TLS, cert_req is set to 2, so a cert chain
387 * of nothing is sent, but no verify packet is sent */
388 /* XXX: For now, we do not support client
389 * authentication in ECDH cipher suites with
390 * ECDH (rather than ECDSA) certificates.
391 * We need to skip the certificate verify
392 * message when client's ECDH public key is sent
393 * inside the client certificate.
394 */
395 if (s->s3->tmp.cert_req == 1)
396 {
397 s->state=SSL3_ST_CW_CERT_VRFY_A;
398 }
399 else
400 {
401 s->state=SSL3_ST_CW_CHANGE_A;
402 s->s3->change_cipher_spec=0;
403 }
404 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
405 {
406 s->state=SSL3_ST_CW_CHANGE_A;
407 s->s3->change_cipher_spec=0;
408 }
409
410 s->init_num=0;
411 break;
412
413 case SSL3_ST_CW_CERT_VRFY_A:
414 case SSL3_ST_CW_CERT_VRFY_B:
415 ret=ssl3_send_client_verify(s);
416 if (ret <= 0) goto end;
417 s->state=SSL3_ST_CW_CHANGE_A;
418 s->init_num=0;
419 s->s3->change_cipher_spec=0;
420 break;
421
422 case SSL3_ST_CW_CHANGE_A:
423 case SSL3_ST_CW_CHANGE_B:
424 ret=ssl3_send_change_cipher_spec(s,
425 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
426 if (ret <= 0) goto end;
427 s->state=SSL3_ST_CW_FINISHED_A;
428 s->init_num=0;
429
430 s->session->cipher=s->s3->tmp.new_cipher;
431 #ifdef OPENSSL_NO_COMP
432 s->session->compress_meth=0;
433 #else
434 if (s->s3->tmp.new_compression == NULL)
435 s->session->compress_meth=0;
436 else
437 s->session->compress_meth=
438 s->s3->tmp.new_compression->id;
439 #endif
440 if (!s->method->ssl3_enc->setup_key_block(s))
441 {
442 ret= -1;
443 goto end;
444 }
445
446 if (!s->method->ssl3_enc->change_cipher_state(s,
447 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
448 {
449 ret= -1;
450 goto end;
451 }
452
453 break;
454
455 case SSL3_ST_CW_FINISHED_A:
456 case SSL3_ST_CW_FINISHED_B:
457 ret=ssl3_send_finished(s,
458 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
459 s->method->ssl3_enc->client_finished_label,
460 s->method->ssl3_enc->client_finished_label_len);
461 if (ret <= 0) goto end;
462 s->state=SSL3_ST_CW_FLUSH;
463
464 /* clear flags */
465 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
466 if (s->hit)
467 {
468 s->s3->tmp.next_state=SSL_ST_OK;
469 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
470 {
471 s->state=SSL_ST_OK;
472 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
473 s->s3->delay_buf_pop_ret=0;
474 }
475 }
476 else
477 {
478 #ifndef OPENSSL_NO_TLSEXT
479 /* Allow NewSessionTicket if ticket expected */
480 if (s->tlsext_ticket_expected)
481 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
482 else
483 #endif
484
485 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
486 }
487 s->init_num=0;
488 break;
489
490 #ifndef OPENSSL_NO_TLSEXT
491 case SSL3_ST_CR_SESSION_TICKET_A:
492 case SSL3_ST_CR_SESSION_TICKET_B:
493 ret=ssl3_get_new_session_ticket(s);
494 if (ret <= 0) goto end;
495 s->state=SSL3_ST_CR_FINISHED_A;
496 s->init_num=0;
497 break;
498
499 case SSL3_ST_CR_CERT_STATUS_A:
500 case SSL3_ST_CR_CERT_STATUS_B:
501 ret=ssl3_get_cert_status(s);
502 if (ret <= 0) goto end;
503 s->state=SSL3_ST_CR_KEY_EXCH_A;
504 s->init_num=0;
505 break;
506 #endif
507
508 case SSL3_ST_CR_FINISHED_A:
509 case SSL3_ST_CR_FINISHED_B:
510
511 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
512 SSL3_ST_CR_FINISHED_B);
513 if (ret <= 0) goto end;
514
515 if (s->hit)
516 s->state=SSL3_ST_CW_CHANGE_A;
517 else
518 s->state=SSL_ST_OK;
519 s->init_num=0;
520 break;
521
522 case SSL3_ST_CW_FLUSH:
523 /* number of bytes to be flushed */
524 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
525 if (num1 > 0)
526 {
527 s->rwstate=SSL_WRITING;
528 num1=BIO_flush(s->wbio);
529 if (num1 <= 0) { ret= -1; goto end; }
530 s->rwstate=SSL_NOTHING;
531 }
532
533 s->state=s->s3->tmp.next_state;
534 break;
535
536 case SSL_ST_OK:
537 /* clean a few things up */
538 ssl3_cleanup_key_block(s);
539
540 if (s->init_buf != NULL)
541 {
542 BUF_MEM_free(s->init_buf);
543 s->init_buf=NULL;
544 }
545
546 /* If we are not 'joining' the last two packets,
547 * remove the buffering now */
548 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
549 ssl_free_wbio_buffer(s);
550 /* else do it later in ssl3_write */
551
552 s->init_num=0;
553 s->new_session=0;
554
555 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
556 if (s->hit) s->ctx->stats.sess_hit++;
557
558 ret=1;
559 /* s->server=0; */
560 s->handshake_func=ssl3_connect;
561 s->ctx->stats.sess_connect_good++;
562
563 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
564
565 goto end;
566 /* break; */
567
568 default:
569 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
570 ret= -1;
571 goto end;
572 /* break; */
573 }
574
575 /* did we do anything */
576 if (!s->s3->tmp.reuse_message && !skip)
577 {
578 if (s->debug)
579 {
580 if ((ret=BIO_flush(s->wbio)) <= 0)
581 goto end;
582 }
583
584 if ((cb != NULL) && (s->state != state))
585 {
586 new_state=s->state;
587 s->state=state;
588 cb(s,SSL_CB_CONNECT_LOOP,1);
589 s->state=new_state;
590 }
591 }
592 skip=0;
593 }
594 end:
595 s->in_handshake--;
596 if (buf != NULL)
597 BUF_MEM_free(buf);
598 if (cb != NULL)
599 cb(s,SSL_CB_CONNECT_EXIT,ret);
600 return(ret);
601 }
602
603
604 int ssl3_client_hello(SSL *s)
605 {
606 unsigned char *buf;
607 unsigned char *p,*d;
608 int i;
609 unsigned long Time,l;
610 #ifndef OPENSSL_NO_COMP
611 int j;
612 SSL_COMP *comp;
613 #endif
614
615 buf=(unsigned char *)s->init_buf->data;
616 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
617 {
618 SSL_SESSION *sess = s->session;
619 if ((sess == NULL) ||
620 (sess->ssl_version != s->version) ||
621 #ifdef OPENSSL_NO_TLSEXT
622 !sess->session_id_length ||
623 #else
624 (!sess->session_id_length && !sess->tlsext_tick) ||
625 #endif
626 (sess->not_resumable))
627 {
628 if (!ssl_get_new_session(s,0))
629 goto err;
630 }
631 /* else use the pre-loaded session */
632
633 p=s->s3->client_random;
634 Time=(unsigned long)time(NULL); /* Time */
635 l2n(Time,p);
636 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
637 goto err;
638
639 /* Do the message type and length last */
640 d=p= &(buf[4]);
641
642 *(p++)=s->version>>8;
643 *(p++)=s->version&0xff;
644 s->client_version=s->version;
645
646 /* Random stuff */
647 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
648 p+=SSL3_RANDOM_SIZE;
649
650 /* Session ID */
651 if (s->new_session)
652 i=0;
653 else
654 i=s->session->session_id_length;
655 *(p++)=i;
656 if (i != 0)
657 {
658 if (i > (int)sizeof(s->session->session_id))
659 {
660 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
661 goto err;
662 }
663 memcpy(p,s->session->session_id,i);
664 p+=i;
665 }
666
667 /* Ciphers supported */
668 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
669 if (i == 0)
670 {
671 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
672 goto err;
673 }
674 s2n(i,p);
675 p+=i;
676
677 /* COMPRESSION */
678 #ifdef OPENSSL_NO_COMP
679 *(p++)=1;
680 #else
681
682 if ((s->options & SSL_OP_NO_COMPRESSION)
683 || !s->ctx->comp_methods)
684 j=0;
685 else
686 j=sk_SSL_COMP_num(s->ctx->comp_methods);
687 *(p++)=1+j;
688 for (i=0; i<j; i++)
689 {
690 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
691 *(p++)=comp->id;
692 }
693 #endif
694 *(p++)=0; /* Add the NULL method */
695
696 #ifndef OPENSSL_NO_TLSEXT
697 /* TLS extensions*/
698 if (ssl_prepare_clienthello_tlsext(s) <= 0)
699 {
700 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
701 goto err;
702 }
703 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
704 {
705 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
706 goto err;
707 }
708 #endif
709
710 l=(p-d);
711 d=buf;
712 *(d++)=SSL3_MT_CLIENT_HELLO;
713 l2n3(l,d);
714
715 s->state=SSL3_ST_CW_CLNT_HELLO_B;
716 /* number of bytes to write */
717 s->init_num=p-buf;
718 s->init_off=0;
719 }
720
721 /* SSL3_ST_CW_CLNT_HELLO_B */
722 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
723 err:
724 return(-1);
725 }
726
727 int ssl3_get_server_hello(SSL *s)
728 {
729 STACK_OF(SSL_CIPHER) *sk;
730 const SSL_CIPHER *c;
731 unsigned char *p,*d;
732 int i,al,ok;
733 unsigned int j;
734 long n;
735 #ifndef OPENSSL_NO_COMP
736 SSL_COMP *comp;
737 #endif
738
739 n=s->method->ssl_get_message(s,
740 SSL3_ST_CR_SRVR_HELLO_A,
741 SSL3_ST_CR_SRVR_HELLO_B,
742 -1,
743 20000, /* ?? */
744 &ok);
745
746 if (!ok) return((int)n);
747
748 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
749 {
750 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
751 {
752 if ( s->d1->send_cookie == 0)
753 {
754 s->s3->tmp.reuse_message = 1;
755 return 1;
756 }
757 else /* already sent a cookie */
758 {
759 al=SSL_AD_UNEXPECTED_MESSAGE;
760 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
761 goto f_err;
762 }
763 }
764 }
765
766 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
767 {
768 al=SSL_AD_UNEXPECTED_MESSAGE;
769 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
770 goto f_err;
771 }
772
773 d=p=(unsigned char *)s->init_msg;
774
775 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
776 {
777 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
778 s->version=(s->version&0xff00)|p[1];
779 al=SSL_AD_PROTOCOL_VERSION;
780 goto f_err;
781 }
782 p+=2;
783
784 /* load the server hello data */
785 /* load the server random */
786 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
787 p+=SSL3_RANDOM_SIZE;
788
789 /* get the session-id */
790 j= *(p++);
791
792 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
793 {
794 al=SSL_AD_ILLEGAL_PARAMETER;
795 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
796 goto f_err;
797 }
798
799 #ifndef OPENSSL_NO_TLSEXT
800 /* check if we want to resume the session based on external pre-shared secret */
801 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
802 {
803 SSL_CIPHER *pref_cipher=NULL;
804 s->session->master_key_length=sizeof(s->session->master_key);
805 if (s->tls_session_secret_cb(s, s->session->master_key,
806 &s->session->master_key_length,
807 NULL, &pref_cipher,
808 s->tls_session_secret_cb_arg))
809 {
810 s->session->cipher = pref_cipher ?
811 pref_cipher : ssl_get_cipher_by_char(s, p+j);
812 }
813 }
814 #endif /* OPENSSL_NO_TLSEXT */
815
816 if (j != 0 && j == s->session->session_id_length
817 && memcmp(p,s->session->session_id,j) == 0)
818 {
819 if(s->sid_ctx_length != s->session->sid_ctx_length
820 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
821 {
822 /* actually a client application bug */
823 al=SSL_AD_ILLEGAL_PARAMETER;
824 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
825 goto f_err;
826 }
827 s->hit=1;
828 }
829 else /* a miss or crap from the other end */
830 {
831 /* If we were trying for session-id reuse, make a new
832 * SSL_SESSION so we don't stuff up other people */
833 s->hit=0;
834 if (s->session->session_id_length > 0)
835 {
836 if (!ssl_get_new_session(s,0))
837 {
838 al=SSL_AD_INTERNAL_ERROR;
839 goto f_err;
840 }
841 }
842 s->session->session_id_length=j;
843 memcpy(s->session->session_id,p,j); /* j could be 0 */
844 }
845 p+=j;
846 c=ssl_get_cipher_by_char(s,p);
847 if (c == NULL)
848 {
849 /* unknown cipher */
850 al=SSL_AD_ILLEGAL_PARAMETER;
851 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
852 goto f_err;
853 }
854 p+=ssl_put_cipher_by_char(s,NULL,NULL);
855
856 sk=ssl_get_ciphers_by_id(s);
857 i=sk_SSL_CIPHER_find(sk,c);
858 if (i < 0)
859 {
860 /* we did not say we would use this cipher */
861 al=SSL_AD_ILLEGAL_PARAMETER;
862 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
863 goto f_err;
864 }
865
866 /* Depending on the session caching (internal/external), the cipher
867 and/or cipher_id values may not be set. Make sure that
868 cipher_id is set and use it for comparison. */
869 if (s->session->cipher)
870 s->session->cipher_id = s->session->cipher->id;
871 if (s->hit && (s->session->cipher_id != c->id))
872 {
873 if (!(s->options &
874 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
875 {
876 al=SSL_AD_ILLEGAL_PARAMETER;
877 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
878 goto f_err;
879 }
880 }
881 s->s3->tmp.new_cipher=c;
882 if (!ssl3_digest_cached_records(s))
883 goto f_err;
884
885 /* lets get the compression algorithm */
886 /* COMPRESSION */
887 #ifdef OPENSSL_NO_COMP
888 if (*(p++) != 0)
889 {
890 al=SSL_AD_ILLEGAL_PARAMETER;
891 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
892 goto f_err;
893 }
894 #else
895 j= *(p++);
896 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
897 comp=NULL;
898 else
899 comp=ssl3_comp_find(s->ctx->comp_methods,j);
900
901 if ((j != 0) && (comp == NULL))
902 {
903 al=SSL_AD_ILLEGAL_PARAMETER;
904 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
905 goto f_err;
906 }
907 else
908 {
909 s->s3->tmp.new_compression=comp;
910 }
911 #endif
912
913 #ifndef OPENSSL_NO_TLSEXT
914 /* TLS extensions*/
915 if (s->version >= SSL3_VERSION)
916 {
917 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
918 {
919 /* 'al' set by ssl_parse_serverhello_tlsext */
920 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
921 goto f_err;
922 }
923 if (ssl_check_serverhello_tlsext(s) <= 0)
924 {
925 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
926 goto err;
927 }
928 }
929 #endif
930
931 if (p != (d+n))
932 {
933 /* wrong packet length */
934 al=SSL_AD_DECODE_ERROR;
935 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
936 goto err;
937 }
938
939 return(1);
940 f_err:
941 ssl3_send_alert(s,SSL3_AL_FATAL,al);
942 err:
943 return(-1);
944 }
945
946 int ssl3_get_server_certificate(SSL *s)
947 {
948 int al,i,ok,ret= -1;
949 unsigned long n,nc,llen,l;
950 X509 *x=NULL;
951 const unsigned char *q,*p;
952 unsigned char *d;
953 STACK_OF(X509) *sk=NULL;
954 SESS_CERT *sc;
955 EVP_PKEY *pkey=NULL;
956 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
957
958 n=s->method->ssl_get_message(s,
959 SSL3_ST_CR_CERT_A,
960 SSL3_ST_CR_CERT_B,
961 -1,
962 s->max_cert_list,
963 &ok);
964
965 if (!ok) return((int)n);
966
967 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
968 {
969 s->s3->tmp.reuse_message=1;
970 return(1);
971 }
972
973 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
974 {
975 al=SSL_AD_UNEXPECTED_MESSAGE;
976 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
977 goto f_err;
978 }
979 p=d=(unsigned char *)s->init_msg;
980
981 if ((sk=sk_X509_new_null()) == NULL)
982 {
983 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
984 goto err;
985 }
986
987 n2l3(p,llen);
988 if (llen+3 != n)
989 {
990 al=SSL_AD_DECODE_ERROR;
991 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
992 goto f_err;
993 }
994 for (nc=0; nc<llen; )
995 {
996 n2l3(p,l);
997 if ((l+nc+3) > llen)
998 {
999 al=SSL_AD_DECODE_ERROR;
1000 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1001 goto f_err;
1002 }
1003
1004 q=p;
1005 x=d2i_X509(NULL,&q,l);
1006 if (x == NULL)
1007 {
1008 al=SSL_AD_BAD_CERTIFICATE;
1009 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1010 goto f_err;
1011 }
1012 if (q != (p+l))
1013 {
1014 al=SSL_AD_DECODE_ERROR;
1015 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1016 goto f_err;
1017 }
1018 if (!sk_X509_push(sk,x))
1019 {
1020 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1021 goto err;
1022 }
1023 x=NULL;
1024 nc+=l+3;
1025 p=q;
1026 }
1027
1028 i=ssl_verify_cert_chain(s,sk);
1029 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1030 #ifndef OPENSSL_NO_KRB5
1031 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1032 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1033 #endif /* OPENSSL_NO_KRB5 */
1034 )
1035 {
1036 al=ssl_verify_alarm_type(s->verify_result);
1037 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1038 goto f_err;
1039 }
1040 ERR_clear_error(); /* but we keep s->verify_result */
1041
1042 sc=ssl_sess_cert_new();
1043 if (sc == NULL) goto err;
1044
1045 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1046 s->session->sess_cert=sc;
1047
1048 sc->cert_chain=sk;
1049 /* Inconsistency alert: cert_chain does include the peer's
1050 * certificate, which we don't include in s3_srvr.c */
1051 x=sk_X509_value(sk,0);
1052 sk=NULL;
1053 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1054
1055 pkey=X509_get_pubkey(x);
1056
1057 /* VRS: allow null cert if auth == KRB5 */
1058 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1059 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1060 ? 0 : 1;
1061
1062 #ifdef KSSL_DEBUG
1063 printf("pkey,x = %p, %p\n", pkey,x);
1064 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1065 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1066 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1067 #endif /* KSSL_DEBUG */
1068
1069 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1070 {
1071 x=NULL;
1072 al=SSL3_AL_FATAL;
1073 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1074 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1075 goto f_err;
1076 }
1077
1078 i=ssl_cert_type(x,pkey);
1079 if (need_cert && i < 0)
1080 {
1081 x=NULL;
1082 al=SSL3_AL_FATAL;
1083 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1084 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1085 goto f_err;
1086 }
1087
1088 if (need_cert)
1089 {
1090 sc->peer_cert_type=i;
1091 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1092 /* Why would the following ever happen?
1093 * We just created sc a couple of lines ago. */
1094 if (sc->peer_pkeys[i].x509 != NULL)
1095 X509_free(sc->peer_pkeys[i].x509);
1096 sc->peer_pkeys[i].x509=x;
1097 sc->peer_key= &(sc->peer_pkeys[i]);
1098
1099 if (s->session->peer != NULL)
1100 X509_free(s->session->peer);
1101 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1102 s->session->peer=x;
1103 }
1104 else
1105 {
1106 sc->peer_cert_type=i;
1107 sc->peer_key= NULL;
1108
1109 if (s->session->peer != NULL)
1110 X509_free(s->session->peer);
1111 s->session->peer=NULL;
1112 }
1113 s->session->verify_result = s->verify_result;
1114
1115 x=NULL;
1116 ret=1;
1117
1118 if (0)
1119 {
1120 f_err:
1121 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1122 }
1123 err:
1124 EVP_PKEY_free(pkey);
1125 X509_free(x);
1126 sk_X509_pop_free(sk,X509_free);
1127 return(ret);
1128 }
1129
1130 int ssl3_get_key_exchange(SSL *s)
1131 {
1132 #ifndef OPENSSL_NO_RSA
1133 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1134 #endif
1135 EVP_MD_CTX md_ctx;
1136 unsigned char *param,*p;
1137 int al,i,j,param_len,ok;
1138 long n,alg_k,alg_a;
1139 EVP_PKEY *pkey=NULL;
1140 #ifndef OPENSSL_NO_RSA
1141 RSA *rsa=NULL;
1142 #endif
1143 #ifndef OPENSSL_NO_DH
1144 DH *dh=NULL;
1145 #endif
1146 #ifndef OPENSSL_NO_ECDH
1147 EC_KEY *ecdh = NULL;
1148 BN_CTX *bn_ctx = NULL;
1149 EC_POINT *srvr_ecpoint = NULL;
1150 int curve_nid = 0;
1151 int encoded_pt_len = 0;
1152 #endif
1153
1154 /* use same message size as in ssl3_get_certificate_request()
1155 * as ServerKeyExchange message may be skipped */
1156 n=s->method->ssl_get_message(s,
1157 SSL3_ST_CR_KEY_EXCH_A,
1158 SSL3_ST_CR_KEY_EXCH_B,
1159 -1,
1160 s->max_cert_list,
1161 &ok);
1162 if (!ok) return((int)n);
1163
1164 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1165 {
1166 #ifndef OPENSSL_NO_PSK
1167 /* In plain PSK ciphersuite, ServerKeyExchange can be
1168 omitted if no identity hint is sent. Set
1169 session->sess_cert anyway to avoid problems
1170 later.*/
1171 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1172 {
1173 s->session->sess_cert=ssl_sess_cert_new();
1174 if (s->ctx->psk_identity_hint)
1175 OPENSSL_free(s->ctx->psk_identity_hint);
1176 s->ctx->psk_identity_hint = NULL;
1177 }
1178 #endif
1179 s->s3->tmp.reuse_message=1;
1180 return(1);
1181 }
1182
1183 param=p=(unsigned char *)s->init_msg;
1184 if (s->session->sess_cert != NULL)
1185 {
1186 #ifndef OPENSSL_NO_RSA
1187 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1188 {
1189 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1190 s->session->sess_cert->peer_rsa_tmp=NULL;
1191 }
1192 #endif
1193 #ifndef OPENSSL_NO_DH
1194 if (s->session->sess_cert->peer_dh_tmp)
1195 {
1196 DH_free(s->session->sess_cert->peer_dh_tmp);
1197 s->session->sess_cert->peer_dh_tmp=NULL;
1198 }
1199 #endif
1200 #ifndef OPENSSL_NO_ECDH
1201 if (s->session->sess_cert->peer_ecdh_tmp)
1202 {
1203 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1204 s->session->sess_cert->peer_ecdh_tmp=NULL;
1205 }
1206 #endif
1207 }
1208 else
1209 {
1210 s->session->sess_cert=ssl_sess_cert_new();
1211 }
1212
1213 param_len=0;
1214 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1215 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1216 EVP_MD_CTX_init(&md_ctx);
1217
1218 #ifndef OPENSSL_NO_PSK
1219 if (alg_k & SSL_kPSK)
1220 {
1221 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1222
1223 al=SSL_AD_HANDSHAKE_FAILURE;
1224 n2s(p,i);
1225 param_len=i+2;
1226 /* Store PSK identity hint for later use, hint is used
1227 * in ssl3_send_client_key_exchange. Assume that the
1228 * maximum length of a PSK identity hint can be as
1229 * long as the maximum length of a PSK identity. */
1230 if (i > PSK_MAX_IDENTITY_LEN)
1231 {
1232 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1233 SSL_R_DATA_LENGTH_TOO_LONG);
1234 goto f_err;
1235 }
1236 if (param_len > n)
1237 {
1238 al=SSL_AD_DECODE_ERROR;
1239 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1240 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1241 goto f_err;
1242 }
1243 /* If received PSK identity hint contains NULL
1244 * characters, the hint is truncated from the first
1245 * NULL. p may not be ending with NULL, so create a
1246 * NULL-terminated string. */
1247 memcpy(tmp_id_hint, p, i);
1248 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1249 if (s->ctx->psk_identity_hint != NULL)
1250 OPENSSL_free(s->ctx->psk_identity_hint);
1251 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1252 if (s->ctx->psk_identity_hint == NULL)
1253 {
1254 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1255 goto f_err;
1256 }
1257
1258 p+=i;
1259 n-=param_len;
1260 }
1261 else
1262 #endif /* !OPENSSL_NO_PSK */
1263 #ifndef OPENSSL_NO_RSA
1264 if (alg_k & SSL_kRSA)
1265 {
1266 if ((rsa=RSA_new()) == NULL)
1267 {
1268 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1269 goto err;
1270 }
1271 n2s(p,i);
1272 param_len=i+2;
1273 if (param_len > n)
1274 {
1275 al=SSL_AD_DECODE_ERROR;
1276 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1277 goto f_err;
1278 }
1279 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1280 {
1281 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1282 goto err;
1283 }
1284 p+=i;
1285
1286 n2s(p,i);
1287 param_len+=i+2;
1288 if (param_len > n)
1289 {
1290 al=SSL_AD_DECODE_ERROR;
1291 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1292 goto f_err;
1293 }
1294 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1295 {
1296 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1297 goto err;
1298 }
1299 p+=i;
1300 n-=param_len;
1301
1302 /* this should be because we are using an export cipher */
1303 if (alg_a & SSL_aRSA)
1304 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1305 else
1306 {
1307 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1308 goto err;
1309 }
1310 s->session->sess_cert->peer_rsa_tmp=rsa;
1311 rsa=NULL;
1312 }
1313 #else /* OPENSSL_NO_RSA */
1314 if (0)
1315 ;
1316 #endif
1317 #ifndef OPENSSL_NO_DH
1318 else if (alg_k & SSL_kEDH)
1319 {
1320 if ((dh=DH_new()) == NULL)
1321 {
1322 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1323 goto err;
1324 }
1325 n2s(p,i);
1326 param_len=i+2;
1327 if (param_len > n)
1328 {
1329 al=SSL_AD_DECODE_ERROR;
1330 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1331 goto f_err;
1332 }
1333 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1334 {
1335 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1336 goto err;
1337 }
1338 p+=i;
1339
1340 n2s(p,i);
1341 param_len+=i+2;
1342 if (param_len > n)
1343 {
1344 al=SSL_AD_DECODE_ERROR;
1345 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1346 goto f_err;
1347 }
1348 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1349 {
1350 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1351 goto err;
1352 }
1353 p+=i;
1354
1355 n2s(p,i);
1356 param_len+=i+2;
1357 if (param_len > n)
1358 {
1359 al=SSL_AD_DECODE_ERROR;
1360 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1361 goto f_err;
1362 }
1363 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1364 {
1365 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1366 goto err;
1367 }
1368 p+=i;
1369 n-=param_len;
1370
1371 #ifndef OPENSSL_NO_RSA
1372 if (alg_a & SSL_aRSA)
1373 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1374 #else
1375 if (0)
1376 ;
1377 #endif
1378 #ifndef OPENSSL_NO_DSA
1379 else if (alg_a & SSL_aDSS)
1380 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1381 #endif
1382 /* else anonymous DH, so no certificate or pkey. */
1383
1384 s->session->sess_cert->peer_dh_tmp=dh;
1385 dh=NULL;
1386 }
1387 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1388 {
1389 al=SSL_AD_ILLEGAL_PARAMETER;
1390 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1391 goto f_err;
1392 }
1393 #endif /* !OPENSSL_NO_DH */
1394
1395 #ifndef OPENSSL_NO_ECDH
1396 else if (alg_k & SSL_kEECDH)
1397 {
1398 EC_GROUP *ngroup;
1399 const EC_GROUP *group;
1400
1401 if ((ecdh=EC_KEY_new()) == NULL)
1402 {
1403 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1404 goto err;
1405 }
1406
1407 /* Extract elliptic curve parameters and the
1408 * server's ephemeral ECDH public key.
1409 * Keep accumulating lengths of various components in
1410 * param_len and make sure it never exceeds n.
1411 */
1412
1413 /* XXX: For now we only support named (not generic) curves
1414 * and the ECParameters in this case is just three bytes.
1415 */
1416 param_len=3;
1417 if ((param_len > n) ||
1418 (*p != NAMED_CURVE_TYPE) ||
1419 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1420 {
1421 al=SSL_AD_INTERNAL_ERROR;
1422 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1423 goto f_err;
1424 }
1425
1426 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1427 if (ngroup == NULL)
1428 {
1429 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1430 goto err;
1431 }
1432 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1433 {
1434 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1435 goto err;
1436 }
1437 EC_GROUP_free(ngroup);
1438
1439 group = EC_KEY_get0_group(ecdh);
1440
1441 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1442 (EC_GROUP_get_degree(group) > 163))
1443 {
1444 al=SSL_AD_EXPORT_RESTRICTION;
1445 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1446 goto f_err;
1447 }
1448
1449 p+=3;
1450
1451 /* Next, get the encoded ECPoint */
1452 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1453 ((bn_ctx = BN_CTX_new()) == NULL))
1454 {
1455 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1456 goto err;
1457 }
1458
1459 encoded_pt_len = *p; /* length of encoded point */
1460 p+=1;
1461 param_len += (1 + encoded_pt_len);
1462 if ((param_len > n) ||
1463 (EC_POINT_oct2point(group, srvr_ecpoint,
1464 p, encoded_pt_len, bn_ctx) == 0))
1465 {
1466 al=SSL_AD_DECODE_ERROR;
1467 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1468 goto f_err;
1469 }
1470
1471 n-=param_len;
1472 p+=encoded_pt_len;
1473
1474 /* The ECC/TLS specification does not mention
1475 * the use of DSA to sign ECParameters in the server
1476 * key exchange message. We do support RSA and ECDSA.
1477 */
1478 if (0) ;
1479 #ifndef OPENSSL_NO_RSA
1480 else if (alg_a & SSL_aRSA)
1481 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1482 #endif
1483 #ifndef OPENSSL_NO_ECDSA
1484 else if (alg_a & SSL_aECDSA)
1485 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1486 #endif
1487 /* else anonymous ECDH, so no certificate or pkey. */
1488 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1489 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1490 ecdh=NULL;
1491 BN_CTX_free(bn_ctx);
1492 EC_POINT_free(srvr_ecpoint);
1493 srvr_ecpoint = NULL;
1494 }
1495 else if (alg_k)
1496 {
1497 al=SSL_AD_UNEXPECTED_MESSAGE;
1498 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1499 goto f_err;
1500 }
1501 #endif /* !OPENSSL_NO_ECDH */
1502
1503
1504 /* p points to the next byte, there are 'n' bytes left */
1505
1506 /* if it was signed, check the signature */
1507 if (pkey != NULL)
1508 {
1509 n2s(p,i);
1510 n-=2;
1511 j=EVP_PKEY_size(pkey);
1512
1513 if ((i != n) || (n > j) || (n <= 0))
1514 {
1515 /* wrong packet length */
1516 al=SSL_AD_DECODE_ERROR;
1517 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1518 goto f_err;
1519 }
1520
1521 #ifndef OPENSSL_NO_RSA
1522 if (pkey->type == EVP_PKEY_RSA)
1523 {
1524 int num;
1525
1526 j=0;
1527 q=md_buf;
1528 for (num=2; num > 0; num--)
1529 {
1530 EVP_DigestInit_ex(&md_ctx,(num == 2)
1531 ?s->ctx->md5:s->ctx->sha1, NULL);
1532 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1533 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1534 EVP_DigestUpdate(&md_ctx,param,param_len);
1535 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1536 q+=i;
1537 j+=i;
1538 }
1539 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1540 pkey->pkey.rsa);
1541 if (i < 0)
1542 {
1543 al=SSL_AD_DECRYPT_ERROR;
1544 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1545 goto f_err;
1546 }
1547 if (i == 0)
1548 {
1549 /* bad signature */
1550 al=SSL_AD_DECRYPT_ERROR;
1551 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1552 goto f_err;
1553 }
1554 }
1555 else
1556 #endif
1557 #ifndef OPENSSL_NO_DSA
1558 if (pkey->type == EVP_PKEY_DSA)
1559 {
1560 /* lets do DSS */
1561 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1562 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1563 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1564 EVP_VerifyUpdate(&md_ctx,param,param_len);
1565 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1566 {
1567 /* bad signature */
1568 al=SSL_AD_DECRYPT_ERROR;
1569 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1570 goto f_err;
1571 }
1572 }
1573 else
1574 #endif
1575 #ifndef OPENSSL_NO_ECDSA
1576 if (pkey->type == EVP_PKEY_EC)
1577 {
1578 /* let's do ECDSA */
1579 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1580 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1581 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1582 EVP_VerifyUpdate(&md_ctx,param,param_len);
1583 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1584 {
1585 /* bad signature */
1586 al=SSL_AD_DECRYPT_ERROR;
1587 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1588 goto f_err;
1589 }
1590 }
1591 else
1592 #endif
1593 {
1594 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1595 goto err;
1596 }
1597 }
1598 else
1599 {
1600 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1601 /* aNULL or kPSK do not need public keys */
1602 {
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1604 goto err;
1605 }
1606 /* still data left over */
1607 if (n != 0)
1608 {
1609 al=SSL_AD_DECODE_ERROR;
1610 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1611 goto f_err;
1612 }
1613 }
1614 EVP_PKEY_free(pkey);
1615 EVP_MD_CTX_cleanup(&md_ctx);
1616 return(1);
1617 f_err:
1618 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1619 err:
1620 EVP_PKEY_free(pkey);
1621 #ifndef OPENSSL_NO_RSA
1622 if (rsa != NULL)
1623 RSA_free(rsa);
1624 #endif
1625 #ifndef OPENSSL_NO_DH
1626 if (dh != NULL)
1627 DH_free(dh);
1628 #endif
1629 #ifndef OPENSSL_NO_ECDH
1630 BN_CTX_free(bn_ctx);
1631 EC_POINT_free(srvr_ecpoint);
1632 if (ecdh != NULL)
1633 EC_KEY_free(ecdh);
1634 #endif
1635 EVP_MD_CTX_cleanup(&md_ctx);
1636 return(-1);
1637 }
1638
1639 int ssl3_get_certificate_request(SSL *s)
1640 {
1641 int ok,ret=0;
1642 unsigned long n,nc,l;
1643 unsigned int llen,ctype_num,i;
1644 X509_NAME *xn=NULL;
1645 const unsigned char *p,*q;
1646 unsigned char *d;
1647 STACK_OF(X509_NAME) *ca_sk=NULL;
1648
1649 n=s->method->ssl_get_message(s,
1650 SSL3_ST_CR_CERT_REQ_A,
1651 SSL3_ST_CR_CERT_REQ_B,
1652 -1,
1653 s->max_cert_list,
1654 &ok);
1655
1656 if (!ok) return((int)n);
1657
1658 s->s3->tmp.cert_req=0;
1659
1660 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1661 {
1662 s->s3->tmp.reuse_message=1;
1663 return(1);
1664 }
1665
1666 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1667 {
1668 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1669 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1670 goto err;
1671 }
1672
1673 /* TLS does not like anon-DH with client cert */
1674 if (s->version > SSL3_VERSION)
1675 {
1676 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1677 {
1678 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1679 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1680 goto err;
1681 }
1682 }
1683
1684 p=d=(unsigned char *)s->init_msg;
1685
1686 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1687 {
1688 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1689 goto err;
1690 }
1691
1692 /* get the certificate types */
1693 ctype_num= *(p++);
1694 if (ctype_num > SSL3_CT_NUMBER)
1695 ctype_num=SSL3_CT_NUMBER;
1696 for (i=0; i<ctype_num; i++)
1697 s->s3->tmp.ctype[i]= p[i];
1698 p+=ctype_num;
1699
1700 /* get the CA RDNs */
1701 n2s(p,llen);
1702 #if 0
1703 {
1704 FILE *out;
1705 out=fopen("/tmp/vsign.der","w");
1706 fwrite(p,1,llen,out);
1707 fclose(out);
1708 }
1709 #endif
1710
1711 if ((llen+ctype_num+2+1) != n)
1712 {
1713 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1714 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1715 goto err;
1716 }
1717
1718 for (nc=0; nc<llen; )
1719 {
1720 n2s(p,l);
1721 if ((l+nc+2) > llen)
1722 {
1723 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1724 goto cont; /* netscape bugs */
1725 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1726 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1727 goto err;
1728 }
1729
1730 q=p;
1731
1732 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1733 {
1734 /* If netscape tolerance is on, ignore errors */
1735 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1736 goto cont;
1737 else
1738 {
1739 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1740 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1741 goto err;
1742 }
1743 }
1744
1745 if (q != (p+l))
1746 {
1747 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1748 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1749 goto err;
1750 }
1751 if (!sk_X509_NAME_push(ca_sk,xn))
1752 {
1753 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1754 goto err;
1755 }
1756
1757 p+=l;
1758 nc+=l+2;
1759 }
1760
1761 if (0)
1762 {
1763 cont:
1764 ERR_clear_error();
1765 }
1766
1767 /* we should setup a certificate to return.... */
1768 s->s3->tmp.cert_req=1;
1769 s->s3->tmp.ctype_num=ctype_num;
1770 if (s->s3->tmp.ca_names != NULL)
1771 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1772 s->s3->tmp.ca_names=ca_sk;
1773 ca_sk=NULL;
1774
1775 ret=1;
1776 err:
1777 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1778 return(ret);
1779 }
1780
1781 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1782 {
1783 return(X509_NAME_cmp(*a,*b));
1784 }
1785 #ifndef OPENSSL_NO_TLSEXT
1786 int ssl3_get_new_session_ticket(SSL *s)
1787 {
1788 int ok,al,ret=0, ticklen;
1789 long n;
1790 const unsigned char *p;
1791 unsigned char *d;
1792
1793 n=s->method->ssl_get_message(s,
1794 SSL3_ST_CR_SESSION_TICKET_A,
1795 SSL3_ST_CR_SESSION_TICKET_B,
1796 -1,
1797 16384,
1798 &ok);
1799
1800 if (!ok)
1801 return((int)n);
1802
1803 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1804 {
1805 s->s3->tmp.reuse_message=1;
1806 return(1);
1807 }
1808 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1809 {
1810 al=SSL_AD_UNEXPECTED_MESSAGE;
1811 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1812 goto f_err;
1813 }
1814 if (n < 6)
1815 {
1816 /* need at least ticket_lifetime_hint + ticket length */
1817 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1818 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1819 goto f_err;
1820 }
1821
1822 p=d=(unsigned char *)s->init_msg;
1823 n2l(p, s->session->tlsext_tick_lifetime_hint);
1824 n2s(p, ticklen);
1825 /* ticket_lifetime_hint + ticket_length + ticket */
1826 if (ticklen + 6 != n)
1827 {
1828 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1829 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1830 goto f_err;
1831 }
1832 if (s->session->tlsext_tick)
1833 {
1834 OPENSSL_free(s->session->tlsext_tick);
1835 s->session->tlsext_ticklen = 0;
1836 }
1837 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1838 if (!s->session->tlsext_tick)
1839 {
1840 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1841 goto err;
1842 }
1843 memcpy(s->session->tlsext_tick, p, ticklen);
1844 s->session->tlsext_ticklen = ticklen;
1845 /* There are two ways to detect a resumed ticket sesion.
1846 * One is to set an appropriate session ID and then the server
1847 * must return a match in ServerHello. This allows the normal
1848 * client session ID matching to work and we know much
1849 * earlier that the ticket has been accepted.
1850 *
1851 * The other way is to set zero length session ID when the
1852 * ticket is presented and rely on the handshake to determine
1853 * session resumption.
1854 *
1855 * We choose the former approach because this fits in with
1856 * assumptions elsewhere in OpenSSL. The session ID is set
1857 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1858 * ticket.
1859 */
1860 EVP_Digest(p, ticklen,
1861 s->session->session_id, &s->session->session_id_length,
1862 #ifndef OPENSSL_NO_SHA256
1863 EVP_sha256(), NULL);
1864 #else
1865 EVP_sha1(), NULL);
1866 #endif
1867 ret=1;
1868 return(ret);
1869 f_err:
1870 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1871 err:
1872 return(-1);
1873 }
1874
1875 int ssl3_get_cert_status(SSL *s)
1876 {
1877 int ok, al;
1878 unsigned long resplen,n;
1879 const unsigned char *p;
1880
1881 n=s->method->ssl_get_message(s,
1882 SSL3_ST_CR_CERT_STATUS_A,
1883 SSL3_ST_CR_CERT_STATUS_B,
1884 SSL3_MT_CERTIFICATE_STATUS,
1885 16384,
1886 &ok);
1887
1888 if (!ok) return((int)n);
1889 if (n < 4)
1890 {
1891 /* need at least status type + length */
1892 al = SSL_AD_DECODE_ERROR;
1893 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1894 goto f_err;
1895 }
1896 p = (unsigned char *)s->init_msg;
1897 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1898 {
1899 al = SSL_AD_DECODE_ERROR;
1900 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1901 goto f_err;
1902 }
1903 n2l3(p, resplen);
1904 if (resplen + 4 != n)
1905 {
1906 al = SSL_AD_DECODE_ERROR;
1907 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1908 goto f_err;
1909 }
1910 if (s->tlsext_ocsp_resp)
1911 OPENSSL_free(s->tlsext_ocsp_resp);
1912 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1913 if (!s->tlsext_ocsp_resp)
1914 {
1915 al = SSL_AD_INTERNAL_ERROR;
1916 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1917 goto f_err;
1918 }
1919 s->tlsext_ocsp_resplen = resplen;
1920 if (s->ctx->tlsext_status_cb)
1921 {
1922 int ret;
1923 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1924 if (ret == 0)
1925 {
1926 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1927 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1928 goto f_err;
1929 }
1930 if (ret < 0)
1931 {
1932 al = SSL_AD_INTERNAL_ERROR;
1933 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1934 goto f_err;
1935 }
1936 }
1937 return 1;
1938 f_err:
1939 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1940 return(-1);
1941 }
1942 #endif
1943
1944 int ssl3_get_server_done(SSL *s)
1945 {
1946 int ok,ret=0;
1947 long n;
1948
1949 n=s->method->ssl_get_message(s,
1950 SSL3_ST_CR_SRVR_DONE_A,
1951 SSL3_ST_CR_SRVR_DONE_B,
1952 SSL3_MT_SERVER_DONE,
1953 30, /* should be very small, like 0 :-) */
1954 &ok);
1955
1956 if (!ok) return((int)n);
1957 if (n > 0)
1958 {
1959 /* should contain no data */
1960 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1961 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1962 return -1;
1963 }
1964 ret=1;
1965 return(ret);
1966 }
1967
1968
1969 int ssl3_send_client_key_exchange(SSL *s)
1970 {
1971 unsigned char *p,*d;
1972 int n;
1973 unsigned long alg_k;
1974 #ifndef OPENSSL_NO_RSA
1975 unsigned char *q;
1976 EVP_PKEY *pkey=NULL;
1977 #endif
1978 #ifndef OPENSSL_NO_KRB5
1979 KSSL_ERR kssl_err;
1980 #endif /* OPENSSL_NO_KRB5 */
1981 #ifndef OPENSSL_NO_ECDH
1982 EC_KEY *clnt_ecdh = NULL;
1983 const EC_POINT *srvr_ecpoint = NULL;
1984 EVP_PKEY *srvr_pub_pkey = NULL;
1985 unsigned char *encodedPoint = NULL;
1986 int encoded_pt_len = 0;
1987 BN_CTX * bn_ctx = NULL;
1988 #endif
1989
1990 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1991 {
1992 d=(unsigned char *)s->init_buf->data;
1993 p= &(d[4]);
1994
1995 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1996
1997 /* Fool emacs indentation */
1998 if (0) {}
1999 #ifndef OPENSSL_NO_RSA
2000 else if (alg_k & SSL_kRSA)
2001 {
2002 RSA *rsa;
2003 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2004
2005 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2006 rsa=s->session->sess_cert->peer_rsa_tmp;
2007 else
2008 {
2009 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2010 if ((pkey == NULL) ||
2011 (pkey->type != EVP_PKEY_RSA) ||
2012 (pkey->pkey.rsa == NULL))
2013 {
2014 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2015 goto err;
2016 }
2017 rsa=pkey->pkey.rsa;
2018 EVP_PKEY_free(pkey);
2019 }
2020
2021 tmp_buf[0]=s->client_version>>8;
2022 tmp_buf[1]=s->client_version&0xff;
2023 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2024 goto err;
2025
2026 s->session->master_key_length=sizeof tmp_buf;
2027
2028 q=p;
2029 /* Fix buf for TLS and beyond */
2030 if (s->version > SSL3_VERSION)
2031 p+=2;
2032 n=RSA_public_encrypt(sizeof tmp_buf,
2033 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2034 #ifdef PKCS1_CHECK
2035 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2036 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2037 #endif
2038 if (n <= 0)
2039 {
2040 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2041 goto err;
2042 }
2043
2044 /* Fix buf for TLS and beyond */
2045 if (s->version > SSL3_VERSION)
2046 {
2047 s2n(n,q);
2048 n+=2;
2049 }
2050
2051 s->session->master_key_length=
2052 s->method->ssl3_enc->generate_master_secret(s,
2053 s->session->master_key,
2054 tmp_buf,sizeof tmp_buf);
2055 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2056 }
2057 #endif
2058 #ifndef OPENSSL_NO_KRB5
2059 else if (alg_k & SSL_kKRB5)
2060 {
2061 krb5_error_code krb5rc;
2062 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2063 /* krb5_data krb5_ap_req; */
2064 krb5_data *enc_ticket;
2065 krb5_data authenticator, *authp = NULL;
2066 EVP_CIPHER_CTX ciph_ctx;
2067 const EVP_CIPHER *enc = NULL;
2068 unsigned char iv[EVP_MAX_IV_LENGTH];
2069 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2070 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2071 + EVP_MAX_IV_LENGTH];
2072 int padl, outl = sizeof(epms);
2073
2074 EVP_CIPHER_CTX_init(&ciph_ctx);
2075
2076 #ifdef KSSL_DEBUG
2077 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2078 alg_k, SSL_kKRB5);
2079 #endif /* KSSL_DEBUG */
2080
2081 authp = NULL;
2082 #ifdef KRB5SENDAUTH
2083 if (KRB5SENDAUTH) authp = &authenticator;
2084 #endif /* KRB5SENDAUTH */
2085
2086 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2087 &kssl_err);
2088 enc = kssl_map_enc(kssl_ctx->enctype);
2089 if (enc == NULL)
2090 goto err;
2091 #ifdef KSSL_DEBUG
2092 {
2093 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2094 if (krb5rc && kssl_err.text)
2095 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2096 }
2097 #endif /* KSSL_DEBUG */
2098
2099 if (krb5rc)
2100 {
2101 ssl3_send_alert(s,SSL3_AL_FATAL,
2102 SSL_AD_HANDSHAKE_FAILURE);
2103 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2104 kssl_err.reason);
2105 goto err;
2106 }
2107
2108 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2109 ** in place of RFC 2712 KerberosWrapper, as in:
2110 **
2111 ** Send ticket (copy to *p, set n = length)
2112 ** n = krb5_ap_req.length;
2113 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2114 ** if (krb5_ap_req.data)
2115 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2116 **
2117 ** Now using real RFC 2712 KerberosWrapper
2118 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2119 ** Note: 2712 "opaque" types are here replaced
2120 ** with a 2-byte length followed by the value.
2121 ** Example:
2122 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2123 ** Where "xx xx" = length bytes. Shown here with
2124 ** optional authenticator omitted.
2125 */
2126
2127 /* KerberosWrapper.Ticket */
2128 s2n(enc_ticket->length,p);
2129 memcpy(p, enc_ticket->data, enc_ticket->length);
2130 p+= enc_ticket->length;
2131 n = enc_ticket->length + 2;
2132
2133 /* KerberosWrapper.Authenticator */
2134 if (authp && authp->length)
2135 {
2136 s2n(authp->length,p);
2137 memcpy(p, authp->data, authp->length);
2138 p+= authp->length;
2139 n+= authp->length + 2;
2140
2141 free(authp->data);
2142 authp->data = NULL;
2143 authp->length = 0;
2144 }
2145 else
2146 {
2147 s2n(0,p);/* null authenticator length */
2148 n+=2;
2149 }
2150
2151 tmp_buf[0]=s->client_version>>8;
2152 tmp_buf[1]=s->client_version&0xff;
2153 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2154 goto err;
2155
2156 /* 20010420 VRS. Tried it this way; failed.
2157 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2158 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2159 ** kssl_ctx->length);
2160 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2161 */
2162
2163 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2164 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2165 kssl_ctx->key,iv);
2166 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2167 sizeof tmp_buf);
2168 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2169 outl += padl;
2170 if (outl > (int)sizeof epms)
2171 {
2172 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2173 goto err;
2174 }
2175 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2176
2177 /* KerberosWrapper.EncryptedPreMasterSecret */
2178 s2n(outl,p);
2179 memcpy(p, epms, outl);
2180 p+=outl;
2181 n+=outl + 2;
2182
2183 s->session->master_key_length=
2184 s->method->ssl3_enc->generate_master_secret(s,
2185 s->session->master_key,
2186 tmp_buf, sizeof tmp_buf);
2187
2188 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2189 OPENSSL_cleanse(epms, outl);
2190 }
2191 #endif
2192 #ifndef OPENSSL_NO_DH
2193 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2194 {
2195 DH *dh_srvr,*dh_clnt;
2196
2197 if (s->session->sess_cert == NULL)
2198 {
2199 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2200 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2201 goto err;
2202 }
2203
2204 if (s->session->sess_cert->peer_dh_tmp != NULL)
2205 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2206 else
2207 {
2208 /* we get them from the cert */
2209 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2210 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2211 goto err;
2212 }
2213
2214 /* generate a new random key */
2215 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2216 {
2217 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2218 goto err;
2219 }
2220 if (!DH_generate_key(dh_clnt))
2221 {
2222 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2223 goto err;
2224 }
2225
2226 /* use the 'p' output buffer for the DH key, but
2227 * make sure to clear it out afterwards */
2228
2229 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2230
2231 if (n <= 0)
2232 {
2233 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2234 goto err;
2235 }
2236
2237 /* generate master key from the result */
2238 s->session->master_key_length=
2239 s->method->ssl3_enc->generate_master_secret(s,
2240 s->session->master_key,p,n);
2241 /* clean up */
2242 memset(p,0,n);
2243
2244 /* send off the data */
2245 n=BN_num_bytes(dh_clnt->pub_key);
2246 s2n(n,p);
2247 BN_bn2bin(dh_clnt->pub_key,p);
2248 n+=2;
2249
2250 DH_free(dh_clnt);
2251
2252 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2253 }
2254 #endif
2255
2256 #ifndef OPENSSL_NO_ECDH
2257 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2258 {
2259 const EC_GROUP *srvr_group = NULL;
2260 EC_KEY *tkey;
2261 int ecdh_clnt_cert = 0;
2262 int field_size = 0;
2263
2264 /* Did we send out the client's
2265 * ECDH share for use in premaster
2266 * computation as part of client certificate?
2267 * If so, set ecdh_clnt_cert to 1.
2268 */
2269 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2270 {
2271 /* XXX: For now, we do not support client
2272 * authentication using ECDH certificates.
2273 * To add such support, one needs to add
2274 * code that checks for appropriate
2275 * conditions and sets ecdh_clnt_cert to 1.
2276 * For example, the cert have an ECC
2277 * key on the same curve as the server's
2278 * and the key should be authorized for
2279 * key agreement.
2280 *
2281 * One also needs to add code in ssl3_connect
2282 * to skip sending the certificate verify
2283 * message.
2284 *
2285 * if ((s->cert->key->privatekey != NULL) &&
2286 * (s->cert->key->privatekey->type ==
2287 * EVP_PKEY_EC) && ...)
2288 * ecdh_clnt_cert = 1;
2289 */
2290 }
2291
2292 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2293 {
2294 tkey = s->session->sess_cert->peer_ecdh_tmp;
2295 }
2296 else
2297 {
2298 /* Get the Server Public Key from Cert */
2299 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2300 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2301 if ((srvr_pub_pkey == NULL) ||
2302 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2303 (srvr_pub_pkey->pkey.ec == NULL))
2304 {
2305 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2306 ERR_R_INTERNAL_ERROR);
2307 goto err;
2308 }
2309
2310 tkey = srvr_pub_pkey->pkey.ec;
2311 }
2312
2313 srvr_group = EC_KEY_get0_group(tkey);
2314 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2315
2316 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2317 {
2318 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2319 ERR_R_INTERNAL_ERROR);
2320 goto err;
2321 }
2322
2323 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2324 {
2325 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2326 goto err;
2327 }
2328
2329 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2330 {
2331 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2332 goto err;
2333 }
2334 if (ecdh_clnt_cert)
2335 {
2336 /* Reuse key info from our certificate
2337 * We only need our private key to perform
2338 * the ECDH computation.
2339 */
2340 const BIGNUM *priv_key;
2341 tkey = s->cert->key->privatekey->pkey.ec;
2342 priv_key = EC_KEY_get0_private_key(tkey);
2343 if (priv_key == NULL)
2344 {
2345 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2346 goto err;
2347 }
2348 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2349 {
2350 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2351 goto err;
2352 }
2353 }
2354 else
2355 {
2356 /* Generate a new ECDH key pair */
2357 if (!(EC_KEY_generate_key(clnt_ecdh)))
2358 {
2359 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2360 goto err;
2361 }
2362 }
2363
2364 /* use the 'p' output buffer for the ECDH key, but
2365 * make sure to clear it out afterwards
2366 */
2367
2368 field_size = EC_GROUP_get_degree(srvr_group);
2369 if (field_size <= 0)
2370 {
2371 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2372 ERR_R_ECDH_LIB);
2373 goto err;
2374 }
2375 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2376 if (n <= 0)
2377 {
2378 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2379 ERR_R_ECDH_LIB);
2380 goto err;
2381 }
2382
2383 /* generate master key from the result */
2384 s->session->master_key_length = s->method->ssl3_enc \
2385 -> generate_master_secret(s,
2386 s->session->master_key,
2387 p, n);
2388
2389 memset(p, 0, n); /* clean up */
2390
2391 if (ecdh_clnt_cert)
2392 {
2393 /* Send empty client key exch message */
2394 n = 0;
2395 }
2396 else
2397 {
2398 /* First check the size of encoding and
2399 * allocate memory accordingly.
2400 */
2401 encoded_pt_len =
2402 EC_POINT_point2oct(srvr_group,
2403 EC_KEY_get0_public_key(clnt_ecdh),
2404 POINT_CONVERSION_UNCOMPRESSED,
2405 NULL, 0, NULL);
2406
2407 encodedPoint = (unsigned char *)
2408 OPENSSL_malloc(encoded_pt_len *
2409 sizeof(unsigned char));
2410 bn_ctx = BN_CTX_new();
2411 if ((encodedPoint == NULL) ||
2412 (bn_ctx == NULL))
2413 {
2414 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2415 goto err;
2416 }
2417
2418 /* Encode the public key */
2419 n = EC_POINT_point2oct(srvr_group,
2420 EC_KEY_get0_public_key(clnt_ecdh),
2421 POINT_CONVERSION_UNCOMPRESSED,
2422 encodedPoint, encoded_pt_len, bn_ctx);
2423
2424 *p = n; /* length of encoded point */
2425 /* Encoded point will be copied here */
2426 p += 1;
2427 /* copy the point */
2428 memcpy((unsigned char *)p, encodedPoint, n);
2429 /* increment n to account for length field */
2430 n += 1;
2431 }
2432
2433 /* Free allocated memory */
2434 BN_CTX_free(bn_ctx);
2435 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2436 if (clnt_ecdh != NULL)
2437 EC_KEY_free(clnt_ecdh);
2438 EVP_PKEY_free(srvr_pub_pkey);
2439 }
2440 #endif /* !OPENSSL_NO_ECDH */
2441 else if (alg_k & SSL_kGOST)
2442 {
2443 /* GOST key exchange message creation */
2444 EVP_PKEY_CTX *pkey_ctx;
2445 X509 *peer_cert;
2446 size_t msglen;
2447 unsigned int md_len;
2448 int keytype;
2449 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2450 EVP_MD_CTX *ukm_hash;
2451 EVP_PKEY *pub_key;
2452
2453 /* Get server sertificate PKEY and create ctx from it */
2454 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2455 if (!peer_cert)
2456 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2457 if (!peer_cert) {
2458 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2459 goto err;
2460 }
2461
2462 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2463 /* If we have send a certificate, and certificate key
2464
2465 * parameters match those of server certificate, use
2466 * certificate key for key exchange
2467 */
2468
2469 /* Otherwise, generate ephemeral key pair */
2470
2471 EVP_PKEY_encrypt_init(pkey_ctx);
2472 /* Generate session key */
2473 RAND_bytes(premaster_secret,32);
2474 /* If we have client certificate, use its secret as peer key */
2475 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2476 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2477 /* If there was an error - just ignore it. Ephemeral key
2478 * would be used
2479 */
2480 ERR_clear_error();
2481 }
2482 }
2483 /* Compute shared IV and store it in algorithm-specific
2484 * context data */
2485 ukm_hash = EVP_MD_CTX_create();
2486 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2487 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2488 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2489 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2490 EVP_MD_CTX_destroy(ukm_hash);
2491 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2492 8,shared_ukm)<0) {
2493 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2494 SSL_R_LIBRARY_BUG);
2495 goto err;
2496 }
2497 /* Make GOST keytransport blob message */
2498 /*Encapsulate it into sequence */
2499 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2500 msglen=255;
2501 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2502 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2503 SSL_R_LIBRARY_BUG);
2504 goto err;
2505 }
2506 if (msglen >= 0x80)
2507 {
2508 *(p++)=0x81;
2509 *(p++)= msglen & 0xff;
2510 n=msglen+3;
2511 }
2512 else
2513 {
2514 *(p++)= msglen & 0xff;
2515 n=msglen+2;
2516 }
2517 memcpy(p, tmp, msglen);
2518 /* Check if pubkey from client certificate was used */
2519 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2520 {
2521 /* Set flag "skip certificate verify" */
2522 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2523 }
2524 EVP_PKEY_CTX_free(pkey_ctx);
2525 s->session->master_key_length=
2526 s->method->ssl3_enc->generate_master_secret(s,
2527 s->session->master_key,premaster_secret,32);
2528 EVP_PKEY_free(pub_key);
2529
2530 }
2531 #ifndef OPENSSL_NO_PSK
2532 else if (alg_k & SSL_kPSK)
2533 {
2534 char identity[PSK_MAX_IDENTITY_LEN];
2535 unsigned char *t = NULL;
2536 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2537 unsigned int pre_ms_len = 0, psk_len = 0;
2538 int psk_err = 1;
2539
2540 n = 0;
2541 if (s->psk_client_callback == NULL)
2542 {
2543 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2544 SSL_R_PSK_NO_CLIENT_CB);
2545 goto err;
2546 }
2547
2548 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2549 identity, PSK_MAX_IDENTITY_LEN,
2550 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2551 if (psk_len > PSK_MAX_PSK_LEN)
2552 {
2553 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2554 ERR_R_INTERNAL_ERROR);
2555 goto psk_err;
2556 }
2557 else if (psk_len == 0)
2558 {
2559 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2560 SSL_R_PSK_IDENTITY_NOT_FOUND);
2561 goto psk_err;
2562 }
2563
2564 /* create PSK pre_master_secret */
2565 pre_ms_len = 2+psk_len+2+psk_len;
2566 t = psk_or_pre_ms;
2567 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2568 s2n(psk_len, t);
2569 memset(t, 0, psk_len);
2570 t+=psk_len;
2571 s2n(psk_len, t);
2572
2573 if (s->session->psk_identity_hint != NULL)
2574 OPENSSL_free(s->session->psk_identity_hint);
2575 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2576 if (s->ctx->psk_identity_hint != NULL &&
2577 s->session->psk_identity_hint == NULL)
2578 {
2579 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2580 ERR_R_MALLOC_FAILURE);
2581 goto psk_err;
2582 }
2583
2584 if (s->session->psk_identity != NULL)
2585 OPENSSL_free(s->session->psk_identity);
2586 s->session->psk_identity = BUF_strdup(identity);
2587 if (s->session->psk_identity == NULL)
2588 {
2589 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2590 ERR_R_MALLOC_FAILURE);
2591 goto psk_err;
2592 }
2593
2594 s->session->master_key_length =
2595 s->method->ssl3_enc->generate_master_secret(s,
2596 s->session->master_key,
2597 psk_or_pre_ms, pre_ms_len);
2598 n = strlen(identity);
2599 s2n(n, p);
2600 memcpy(p, identity, n);
2601 n+=2;
2602 psk_err = 0;
2603 psk_err:
2604 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2605 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2606 if (psk_err != 0)
2607 {
2608 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2609 goto err;
2610 }
2611 }
2612 #endif
2613 else
2614 {
2615 ssl3_send_alert(s, SSL3_AL_FATAL,
2616 SSL_AD_HANDSHAKE_FAILURE);
2617 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2618 ERR_R_INTERNAL_ERROR);
2619 goto err;
2620 }
2621
2622 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2623 l2n3(n,d);
2624
2625 s->state=SSL3_ST_CW_KEY_EXCH_B;
2626 /* number of bytes to write */
2627 s->init_num=n+4;
2628 s->init_off=0;
2629 }
2630
2631 /* SSL3_ST_CW_KEY_EXCH_B */
2632 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2633 err:
2634 #ifndef OPENSSL_NO_ECDH
2635 BN_CTX_free(bn_ctx);
2636 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2637 if (clnt_ecdh != NULL)
2638 EC_KEY_free(clnt_ecdh);
2639 EVP_PKEY_free(srvr_pub_pkey);
2640 #endif
2641 return(-1);
2642 }
2643
2644 int ssl3_send_client_verify(SSL *s)
2645 {
2646 unsigned char *p,*d;
2647 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2648 EVP_PKEY *pkey;
2649 EVP_PKEY_CTX *pctx=NULL;
2650 #ifndef OPENSSL_NO_RSA
2651 unsigned u=0;
2652 #endif
2653 unsigned long n;
2654 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2655 int j;
2656 #endif
2657
2658 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2659 {
2660 d=(unsigned char *)s->init_buf->data;
2661 p= &(d[4]);
2662 pkey=s->cert->key->privatekey;
2663 /* Create context from key and test if sha1 is allowed as digest */
2664 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2665 EVP_PKEY_sign_init(pctx);
2666 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2667 {
2668 s->method->ssl3_enc->cert_verify_mac(s,
2669 NID_sha1,
2670 &(data[MD5_DIGEST_LENGTH]));
2671 }
2672 else
2673 {
2674 ERR_clear_error();
2675 }
2676 #ifndef OPENSSL_NO_RSA
2677 if (pkey->type == EVP_PKEY_RSA)
2678 {
2679 s->method->ssl3_enc->cert_verify_mac(s,
2680 NID_md5,
2681 &(data[0]));
2682 if (RSA_sign(NID_md5_sha1, data,
2683 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2684 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2685 {
2686 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2687 goto err;
2688 }
2689 s2n(u,p);
2690 n=u+2;
2691 }
2692 else
2693 #endif
2694 #ifndef OPENSSL_NO_DSA
2695 if (pkey->type == EVP_PKEY_DSA)
2696 {
2697 if (!DSA_sign(pkey->save_type,
2698 &(data[MD5_DIGEST_LENGTH]),
2699 SHA_DIGEST_LENGTH,&(p[2]),
2700 (unsigned int *)&j,pkey->pkey.dsa))
2701 {
2702 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2703 goto err;
2704 }
2705 s2n(j,p);
2706 n=j+2;
2707 }
2708 else
2709 #endif
2710 #ifndef OPENSSL_NO_ECDSA
2711 if (pkey->type == EVP_PKEY_EC)
2712 {
2713 if (!ECDSA_sign(pkey->save_type,
2714 &(data[MD5_DIGEST_LENGTH]),
2715 SHA_DIGEST_LENGTH,&(p[2]),
2716 (unsigned int *)&j,pkey->pkey.ec))
2717 {
2718 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2719 ERR_R_ECDSA_LIB);
2720 goto err;
2721 }
2722 s2n(j,p);
2723 n=j+2;
2724 }
2725 else
2726 #endif
2727 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2728 {
2729 unsigned char signbuf[64];
2730 int i;
2731 size_t sigsize=64;
2732 s->method->ssl3_enc->cert_verify_mac(s,
2733 NID_id_GostR3411_94,
2734 data);
2735 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2736 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2737 ERR_R_INTERNAL_ERROR);
2738 goto err;
2739 }
2740 for (i=63,j=0; i>=0; j++, i--) {
2741 p[2+j]=signbuf[i];
2742 }
2743 s2n(j,p);
2744 n=j+2;
2745 }
2746 else
2747 {
2748 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2749 goto err;
2750 }
2751 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2752 l2n3(n,d);
2753
2754 s->state=SSL3_ST_CW_CERT_VRFY_B;
2755 s->init_num=(int)n+4;
2756 s->init_off=0;
2757 }
2758 EVP_PKEY_CTX_free(pctx);
2759 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2760 err:
2761 EVP_PKEY_CTX_free(pctx);
2762 return(-1);
2763 }
2764
2765 int ssl3_send_client_certificate(SSL *s)
2766 {
2767 X509 *x509=NULL;
2768 EVP_PKEY *pkey=NULL;
2769 int i;
2770 unsigned long l;
2771
2772 if (s->state == SSL3_ST_CW_CERT_A)
2773 {
2774 if ((s->cert == NULL) ||
2775 (s->cert->key->x509 == NULL) ||
2776 (s->cert->key->privatekey == NULL))
2777 s->state=SSL3_ST_CW_CERT_B;
2778 else
2779 s->state=SSL3_ST_CW_CERT_C;
2780 }
2781
2782 /* We need to get a client cert */
2783 if (s->state == SSL3_ST_CW_CERT_B)
2784 {
2785 /* If we get an error, we need to
2786 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2787 * We then get retied later */
2788 i=0;
2789 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2790 if (i < 0)
2791 {
2792 s->rwstate=SSL_X509_LOOKUP;
2793 return(-1);
2794 }
2795 s->rwstate=SSL_NOTHING;
2796 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2797 {
2798 s->state=SSL3_ST_CW_CERT_B;
2799 if ( !SSL_use_certificate(s,x509) ||
2800 !SSL_use_PrivateKey(s,pkey))
2801 i=0;
2802 }
2803 else if (i == 1)
2804 {
2805 i=0;
2806 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2807 }
2808
2809 if (x509 != NULL) X509_free(x509);
2810 if (pkey != NULL) EVP_PKEY_free(pkey);
2811 if (i == 0)
2812 {
2813 if (s->version == SSL3_VERSION)
2814 {
2815 s->s3->tmp.cert_req=0;
2816 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2817 return(1);
2818 }
2819 else
2820 {
2821 s->s3->tmp.cert_req=2;
2822 }
2823 }
2824
2825 /* Ok, we have a cert */
2826 s->state=SSL3_ST_CW_CERT_C;
2827 }
2828
2829 if (s->state == SSL3_ST_CW_CERT_C)
2830 {
2831 s->state=SSL3_ST_CW_CERT_D;
2832 l=ssl3_output_cert_chain(s,
2833 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2834 s->init_num=(int)l;
2835 s->init_off=0;
2836 }
2837 /* SSL3_ST_CW_CERT_D */
2838 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2839 }
2840
2841 #define has_bits(i,m) (((i)&(m)) == (m))
2842
2843 int ssl3_check_cert_and_algorithm(SSL *s)
2844 {
2845 int i,idx;
2846 long alg_k,alg_a;
2847 EVP_PKEY *pkey=NULL;
2848 SESS_CERT *sc;
2849 #ifndef OPENSSL_NO_RSA
2850 RSA *rsa;
2851 #endif
2852 #ifndef OPENSSL_NO_DH
2853 DH *dh;
2854 #endif
2855
2856 sc=s->session->sess_cert;
2857 if (sc == NULL)
2858 {
2859 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2860 goto err;
2861 }
2862
2863 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2864 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2865
2866 /* we don't have a certificate */
2867 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2868 return(1);
2869
2870 #ifndef OPENSSL_NO_RSA
2871 rsa=s->session->sess_cert->peer_rsa_tmp;
2872 #endif
2873 #ifndef OPENSSL_NO_DH
2874 dh=s->session->sess_cert->peer_dh_tmp;
2875 #endif
2876
2877 /* This is the passed certificate */
2878
2879 idx=sc->peer_cert_type;
2880 #ifndef OPENSSL_NO_ECDH
2881 if (idx == SSL_PKEY_ECC)
2882 {
2883 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2884 s->s3->tmp.new_cipher) == 0)
2885 { /* check failed */
2886 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2887 goto f_err;
2888 }
2889 else
2890 {
2891 return 1;
2892 }
2893 }
2894 #endif
2895 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2896 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2897 EVP_PKEY_free(pkey);
2898
2899
2900 /* Check that we have a certificate if we require one */
2901 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2902 {
2903 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2904 goto f_err;
2905 }
2906 #ifndef OPENSSL_NO_DSA
2907 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2908 {
2909 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2910 goto f_err;
2911 }
2912 #endif
2913 #ifndef OPENSSL_NO_RSA
2914 if ((alg_k & SSL_kRSA) &&
2915 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2916 {
2917 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2918 goto f_err;
2919 }
2920 #endif
2921 #ifndef OPENSSL_NO_DH
2922 if ((alg_k & SSL_kEDH) &&
2923 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2924 {
2925 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2926 goto f_err;
2927 }
2928 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2929 {
2930 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2931 goto f_err;
2932 }
2933 #ifndef OPENSSL_NO_DSA
2934 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2935 {
2936 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2937 goto f_err;
2938 }
2939 #endif
2940 #endif
2941
2942 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2943 {
2944 #ifndef OPENSSL_NO_RSA
2945 if (alg_k & SSL_kRSA)
2946 {
2947 if (rsa == NULL
2948 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2949 {
2950 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2951 goto f_err;
2952 }
2953 }
2954 else
2955 #endif
2956 #ifndef OPENSSL_NO_DH
2957 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2958 {
2959 if (dh == NULL
2960 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2961 {
2962 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2963 goto f_err;
2964 }
2965 }
2966 else
2967 #endif
2968 {
2969 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2970 goto f_err;
2971 }
2972 }
2973 return(1);
2974 f_err:
2975 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2976 err:
2977 return(0);
2978 }
2979
2980 /* Check to see if handshake is full or resumed. Usually this is just a
2981 * case of checking to see if a cache hit has occurred. In the case of
2982 * session tickets we have to check the next message to be sure.
2983 */
2984
2985 #ifndef OPENSSL_NO_TLSEXT
2986 int ssl3_check_finished(SSL *s)
2987 {
2988 int ok;
2989 long n;
2990 /* If we have no ticket it cannot be a resumed session. */
2991 if (!s->session->tlsext_tick)
2992 return 1;
2993 /* this function is called when we really expect a Certificate
2994 * message, so permit appropriate message length */
2995 n=s->method->ssl_get_message(s,
2996 SSL3_ST_CR_CERT_A,
2997 SSL3_ST_CR_CERT_B,
2998 -1,
2999 s->max_cert_list,
3000 &ok);
3001 if (!ok) return((int)n);
3002 s->s3->tmp.reuse_message = 1;
3003 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3004 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3005 return 2;
3006
3007 return 1;
3008 }
3009 #endif
3010
3011 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3012 {
3013 int i = 0;
3014 #ifndef OPENSSL_NO_ENGINE
3015 if (s->ctx->client_cert_engine)
3016 {
3017 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3018 SSL_get_client_CA_list(s),
3019 px509, ppkey, NULL, NULL, NULL);
3020 if (i != 0)
3021 return i;
3022 }
3023 #endif
3024 if (s->ctx->client_cert_cb)
3025 i = s->ctx->client_cert_cb(s,px509,ppkey);
3026 return i;
3027 }
NetBSD on the FriendlyARM MINI2440