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d02b48c6 1/* ssl/s3_clnt.c */
58964a49 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6
RE		 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 */
8c74b5e5 58/* ====================================================================
52b8dad8 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
8c74b5e5
BM		 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 */
ea262260
BM		 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 *
ea262260
BM		 120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
122 *
123 */
ddac1974
NL		 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 */
d02b48c6
RE		 150
151#include <stdio.h>
a3654f05 152#include <openssl/crypto.h>
7b63c0fa
LJ		 153#include "ssl_locl.h"
154#include "kssl_lcl.h"
ec577822
BM		 155#include <openssl/buffer.h>
156#include <openssl/rand.h>
157#include <openssl/objects.h>
158#include <openssl/evp.h>
dbad1690 159#include <openssl/md5.h>
086e32a6
DSH		 160#ifdef OPENSSL_FIPS
161#include <openssl/fips.h>
162#endif
3eeaab4b 163#ifndef OPENSSL_NO_DH
60a938c6 164#include <openssl/dh.h>
3eeaab4b 165#endif
d095b68d 166#include <openssl/bn.h>
368888bc
DSH		 167#ifndef OPENSSL_NO_ENGINE
168#include <openssl/engine.h>
169#endif
f9b3bff6 170
4ebb342f 171static const SSL_METHOD *ssl3_get_client_method(int ver);
ccd86b68 172static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
ea262260 173
4ebb342f 174static const SSL_METHOD *ssl3_get_client_method(int ver)
d02b48c6 175 {
58964a49 176 if (ver == SSL3_VERSION)
d02b48c6
RE		 177 return(SSLv3_client_method());
178 else
179 return(NULL);
180 }
181
f3b656b2
DSH		 182IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
183 ssl_undefined_function,
184 ssl3_connect,
185 ssl3_get_client_method)
d02b48c6 186
6b691a5c 187int ssl3_connect(SSL *s)
d02b48c6 188 {
8d6ad9e3 189 BUF_MEM *buf=NULL;
52b8dad8 190 unsigned long Time=(unsigned long)time(NULL);
45d87a1f 191 void (*cb)(const SSL *ssl,int type,int val)=NULL;
d02b48c6 192 int ret= -1;
477fd459 193 int new_state,state,skip=0;
d02b48c6 194
eb952088 195 RAND_add(&Time,sizeof(Time),0);
d02b48c6 196 ERR_clear_error();
58964a49 197 clear_sys_error();
d02b48c6
RE		 198
199 if (s->info_callback != NULL)
200 cb=s->info_callback;
201 else if (s->ctx->info_callback != NULL)
202 cb=s->ctx->info_callback;
203
d02b48c6 204 s->in_handshake++;
979689aa 205 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
d02b48c6 206
4817504d
DSH		 207#ifndef OPENSSL_NO_HEARTBEATS
208 /* If we're awaiting a HeartbeatResponse, pretend we
209 * already got and don't await it anymore, because
210 * Heartbeats don't make sense during handshakes anyway.
211 */
212 if (s->tlsext_hb_pending)
213 {
214 s->tlsext_hb_pending = 0;
215 s->tlsext_hb_seq++;
216 }
217#endif
218
d02b48c6
RE		 219 for (;;)
220 {
221 state=s->state;
222
223 switch(s->state)
224 {
225 case SSL_ST_RENEGOTIATE:
44959ee4 226 s->renegotiate=1;
d02b48c6 227 s->state=SSL_ST_CONNECT;
413c4f45 228 s->ctx->stats.sess_connect_renegotiate++;
d02b48c6
RE		 229 /* break */
230 case SSL_ST_BEFORE:
231 case SSL_ST_CONNECT:
232 case SSL_ST_BEFORE|SSL_ST_CONNECT:
233 case SSL_ST_OK|SSL_ST_CONNECT:
234
413c4f45 235 s->server=0;
d02b48c6
RE		 236 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
237
58964a49 238 if ((s->version & 0xff00 ) != 0x0300)
bbb8de09 239 {
5277d7cb 240 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
bbb8de09
BM		 241 ret = -1;
242 goto end;
243 }
244
58964a49 245 /* s->version=SSL3_VERSION; */
d02b48c6
RE		 246 s->type=SSL_ST_CONNECT;
247
248 if (s->init_buf == NULL)
249 {
250 if ((buf=BUF_MEM_new()) == NULL)
251 {
252 ret= -1;
253 goto end;
254 }
255 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
256 {
257 ret= -1;
258 goto end;
259 }
260 s->init_buf=buf;
8d6ad9e3 261 buf=NULL;
d02b48c6
RE		 262 }
263
264 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
265
266 /* setup buffing BIO */
58964a49 267 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
d02b48c6
RE		 268
269 /* don't push the buffering BIO quite yet */
270
271 ssl3_init_finished_mac(s);
272
273 s->state=SSL3_ST_CW_CLNT_HELLO_A;
413c4f45 274 s->ctx->stats.sess_connect++;
d02b48c6
RE		 275 s->init_num=0;
276 break;
277
278 case SSL3_ST_CW_CLNT_HELLO_A:
279 case SSL3_ST_CW_CLNT_HELLO_B:
280
281 s->shutdown=0;
282 ret=ssl3_client_hello(s);
283 if (ret <= 0) goto end;
284 s->state=SSL3_ST_CR_SRVR_HELLO_A;
285 s->init_num=0;
286
287 /* turn on buffering for the next lot of output */
58964a49
RE		 288 if (s->bbio != s->wbio)
289 s->wbio=BIO_push(s->bbio,s->wbio);
d02b48c6
RE		 290
291 break;
292
293 case SSL3_ST_CR_SRVR_HELLO_A:
294 case SSL3_ST_CR_SRVR_HELLO_B:
295 ret=ssl3_get_server_hello(s);
296 if (ret <= 0) goto end;
241520e6 297
d02b48c6 298 if (s->hit)
c519e89f 299 {
d02b48c6 300 s->state=SSL3_ST_CR_FINISHED_A;
c519e89f
BM		 301#ifndef OPENSSL_NO_TLSEXT
302 if (s->tlsext_ticket_expected)
303 {
304 /* receive renewed session ticket */
305 s->state=SSL3_ST_CR_SESSION_TICKET_A;
306 }
307#endif
308 }
d02b48c6
RE		 309 else
310 s->state=SSL3_ST_CR_CERT_A;
311 s->init_num=0;
312 break;
313
314 case SSL3_ST_CR_CERT_A:
315 case SSL3_ST_CR_CERT_B:
6434abbf
DSH		 316#ifndef OPENSSL_NO_TLSEXT
317 ret=ssl3_check_finished(s);
318 if (ret <= 0) goto end;
319 if (ret == 2)
320 {
321 s->hit = 1;
31f528b1
DSH		 322 if (s->tlsext_ticket_expected)
323 s->state=SSL3_ST_CR_SESSION_TICKET_A;
324 else
325 s->state=SSL3_ST_CR_FINISHED_A;
6434abbf
DSH		 326 s->init_num=0;
327 break;
328 }
329#endif
ea262260 330 /* Check if it is anon DH/ECDH */
ddac1974 331 /* or PSK */
52b8dad8
BM		 332 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
333 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
d02b48c6
RE		 334 {
335 ret=ssl3_get_server_certificate(s);
336 if (ret <= 0) goto end;
67c8e7f4
DSH		 337#ifndef OPENSSL_NO_TLSEXT
338 if (s->tlsext_status_expected)
339 s->state=SSL3_ST_CR_CERT_STATUS_A;
340 else
341 s->state=SSL3_ST_CR_KEY_EXCH_A;
342 }
343 else
344 {
345 skip = 1;
346 s->state=SSL3_ST_CR_KEY_EXCH_A;
d02b48c6 347 }
67c8e7f4 348#else
3ce54f35 349 }
d02b48c6
RE		 350 else
351 skip=1;
67c8e7f4 352
d02b48c6 353 s->state=SSL3_ST_CR_KEY_EXCH_A;
67c8e7f4 354#endif
d02b48c6
RE		 355 s->init_num=0;
356 break;
357
358 case SSL3_ST_CR_KEY_EXCH_A:
359 case SSL3_ST_CR_KEY_EXCH_B:
360 ret=ssl3_get_key_exchange(s);
361 if (ret <= 0) goto end;
362 s->state=SSL3_ST_CR_CERT_REQ_A;
363 s->init_num=0;
364
365 /* at this point we check that we have the
366 * required stuff from the server */
367 if (!ssl3_check_cert_and_algorithm(s))
368 {
369 ret= -1;
370 goto end;
371 }
372 break;
373
374 case SSL3_ST_CR_CERT_REQ_A:
375 case SSL3_ST_CR_CERT_REQ_B:
376 ret=ssl3_get_certificate_request(s);
377 if (ret <= 0) goto end;
378 s->state=SSL3_ST_CR_SRVR_DONE_A;
379 s->init_num=0;
380 break;
381
382 case SSL3_ST_CR_SRVR_DONE_A:
383 case SSL3_ST_CR_SRVR_DONE_B:
384 ret=ssl3_get_server_done(s);
385 if (ret <= 0) goto end;
edc032b5
BL		 386#ifndef OPENSSL_NO_SRP
387 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
388 {
389 if ((ret = SRP_Calc_A_param(s))<=0)
390 {
23bc7961 391 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
edc032b5
BL		 392 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
393 goto end;
394 }
395 }
396#endif
d02b48c6
RE		 397 if (s->s3->tmp.cert_req)
398 s->state=SSL3_ST_CW_CERT_A;
399 else
400 s->state=SSL3_ST_CW_KEY_EXCH_A;
401 s->init_num=0;
402
403 break;
404
405 case SSL3_ST_CW_CERT_A:
406 case SSL3_ST_CW_CERT_B:
407 case SSL3_ST_CW_CERT_C:
95d29597 408 case SSL3_ST_CW_CERT_D:
d02b48c6
RE		 409 ret=ssl3_send_client_certificate(s);
410 if (ret <= 0) goto end;
411 s->state=SSL3_ST_CW_KEY_EXCH_A;
412 s->init_num=0;
413 break;
414
415 case SSL3_ST_CW_KEY_EXCH_A:
416 case SSL3_ST_CW_KEY_EXCH_B:
417 ret=ssl3_send_client_key_exchange(s);
418 if (ret <= 0) goto end;
d02b48c6
RE		 419 /* EAY EAY EAY need to check for DH fix cert
420 * sent back */
58964a49
RE		 421 /* For TLS, cert_req is set to 2, so a cert chain
422 * of nothing is sent, but no verify packet is sent */
ea262260
BM		 423 /* XXX: For now, we do not support client
424 * authentication in ECDH cipher suites with
425 * ECDH (rather than ECDSA) certificates.
426 * We need to skip the certificate verify
427 * message when client's ECDH public key is sent
428 * inside the client certificate.
429 */
58964a49 430 if (s->s3->tmp.cert_req == 1)
d02b48c6
RE		 431 {
432 s->state=SSL3_ST_CW_CERT_VRFY_A;
433 }
434 else
435 {
436 s->state=SSL3_ST_CW_CHANGE_A;
437 s->s3->change_cipher_spec=0;
438 }
f0288f05
DSH		 439 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
440 {
441 s->state=SSL3_ST_CW_CHANGE_A;
442 s->s3->change_cipher_spec=0;
443 }
d02b48c6
RE		 444
445 s->init_num=0;
446 break;
447
448 case SSL3_ST_CW_CERT_VRFY_A:
449 case SSL3_ST_CW_CERT_VRFY_B:
450 ret=ssl3_send_client_verify(s);
451 if (ret <= 0) goto end;
452 s->state=SSL3_ST_CW_CHANGE_A;
453 s->init_num=0;
454 s->s3->change_cipher_spec=0;
455 break;
456
457 case SSL3_ST_CW_CHANGE_A:
458 case SSL3_ST_CW_CHANGE_B:
459 ret=ssl3_send_change_cipher_spec(s,
460 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
461 if (ret <= 0) goto end;
ee2ffc27 462
bf48836c 463#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
d02b48c6 464 s->state=SSL3_ST_CW_FINISHED_A;
ee2ffc27 465#else
6f31dd72 466 if (s->s3->next_proto_neg_seen)
ee2ffc27
BL		 467 s->state=SSL3_ST_CW_NEXT_PROTO_A;
468 else
469 s->state=SSL3_ST_CW_FINISHED_A;
470#endif
d02b48c6
RE		 471 s->init_num=0;
472
473 s->session->cipher=s->s3->tmp.new_cipher;
09b6c2ef
DSH		 474#ifdef OPENSSL_NO_COMP
475 s->session->compress_meth=0;
476#else
413c4f45
MC		 477 if (s->s3->tmp.new_compression == NULL)
478 s->session->compress_meth=0;
479 else
480 s->session->compress_meth=
481 s->s3->tmp.new_compression->id;
09b6c2ef 482#endif
58964a49 483 if (!s->method->ssl3_enc->setup_key_block(s))
d02b48c6
RE		 484 {
485 ret= -1;
486 goto end;
487 }
488
58964a49 489 if (!s->method->ssl3_enc->change_cipher_state(s,
d02b48c6
RE		 490 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
491 {
492 ret= -1;
493 goto end;
494 }
495
496 break;
497
bf48836c 498#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
ee2ffc27
BL		 499 case SSL3_ST_CW_NEXT_PROTO_A:
500 case SSL3_ST_CW_NEXT_PROTO_B:
501 ret=ssl3_send_next_proto(s);
502 if (ret <= 0) goto end;
503 s->state=SSL3_ST_CW_FINISHED_A;
504 break;
505#endif
506
d02b48c6
RE		 507 case SSL3_ST_CW_FINISHED_A:
508 case SSL3_ST_CW_FINISHED_B:
509 ret=ssl3_send_finished(s,
510 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
c44f7540
BM		 511 s->method->ssl3_enc->client_finished_label,
512 s->method->ssl3_enc->client_finished_label_len);
d02b48c6
RE		 513 if (ret <= 0) goto end;
514 s->state=SSL3_ST_CW_FLUSH;
515
516 /* clear flags */
517 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
518 if (s->hit)
519 {
520 s->s3->tmp.next_state=SSL_ST_OK;
521 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
522 {
523 s->state=SSL_ST_OK;
524 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
525 s->s3->delay_buf_pop_ret=0;
526 }
527 }
528 else
529 {
6434abbf
DSH		 530#ifndef OPENSSL_NO_TLSEXT
531 /* Allow NewSessionTicket if ticket expected */
532 if (s->tlsext_ticket_expected)
533 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
534 else
535#endif
536
d02b48c6
RE		 537 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
538 }
539 s->init_num=0;
540 break;
541
6434abbf
DSH		 542#ifndef OPENSSL_NO_TLSEXT
543 case SSL3_ST_CR_SESSION_TICKET_A:
544 case SSL3_ST_CR_SESSION_TICKET_B:
545 ret=ssl3_get_new_session_ticket(s);
446124a2 546 if (ret <= 0) goto end;
6434abbf
DSH		 547 s->state=SSL3_ST_CR_FINISHED_A;
548 s->init_num=0;
549 break;
67c8e7f4
DSH		 550
551 case SSL3_ST_CR_CERT_STATUS_A:
552 case SSL3_ST_CR_CERT_STATUS_B:
553 ret=ssl3_get_cert_status(s);
554 if (ret <= 0) goto end;
555 s->state=SSL3_ST_CR_KEY_EXCH_A;
556 s->init_num=0;
557 break;
6434abbf
DSH		 558#endif
559
d02b48c6
RE		 560 case SSL3_ST_CR_FINISHED_A:
561 case SSL3_ST_CR_FINISHED_B:
562
563 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
58964a49 564 SSL3_ST_CR_FINISHED_B);
d02b48c6
RE		 565 if (ret <= 0) goto end;
566
567 if (s->hit)
568 s->state=SSL3_ST_CW_CHANGE_A;
569 else
570 s->state=SSL_ST_OK;
571 s->init_num=0;
572 break;
573
574 case SSL3_ST_CW_FLUSH:
d5e7f2f2
DSH		 575 s->rwstate=SSL_WRITING;
576 if (BIO_flush(s->wbio) <= 0)
d02b48c6 577 {
d5e7f2f2
DSH		 578 ret= -1;
579 goto end;
d02b48c6 580 }
d5e7f2f2 581 s->rwstate=SSL_NOTHING;
d02b48c6
RE		 582 s->state=s->s3->tmp.next_state;
583 break;
584
585 case SSL_ST_OK:
586 /* clean a few things up */
587 ssl3_cleanup_key_block(s);
588
413c4f45 589 if (s->init_buf != NULL)
d02b48c6 590 {
413c4f45
MC		 591 BUF_MEM_free(s->init_buf);
592 s->init_buf=NULL;
d02b48c6 593 }
413c4f45
MC		 594
595 /* If we are not 'joining' the last two packets,
596 * remove the buffering now */
597 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
598 ssl_free_wbio_buffer(s);
599 /* else do it later in ssl3_write */
d02b48c6
RE		 600
601 s->init_num=0;
44959ee4 602 s->renegotiate=0;
d02b48c6
RE		 603 s->new_session=0;
604
605 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
413c4f45 606 if (s->hit) s->ctx->stats.sess_hit++;
d02b48c6
RE		 607
608 ret=1;
609 /* s->server=0; */
610 s->handshake_func=ssl3_connect;
413c4f45 611 s->ctx->stats.sess_connect_good++;
d02b48c6
RE		 612
613 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
614
615 goto end;
dfeab068 616 /* break; */
d02b48c6
RE		 617
618 default:
619 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
620 ret= -1;
621 goto end;
622 /* break; */
623 }
624
625 /* did we do anything */
626 if (!s->s3->tmp.reuse_message && !skip)
627 {
58964a49
RE		 628 if (s->debug)
629 {
630 if ((ret=BIO_flush(s->wbio)) <= 0)
631 goto end;
632 }
d02b48c6
RE		 633
634 if ((cb != NULL) && (s->state != state))
635 {
636 new_state=s->state;
637 s->state=state;
638 cb(s,SSL_CB_CONNECT_LOOP,1);
639 s->state=new_state;
640 }
641 }
642 skip=0;
643 }
644end:
4d635a70 645 s->in_handshake--;
8d6ad9e3
RL		 646 if (buf != NULL)
647 BUF_MEM_free(buf);
d02b48c6
RE		 648 if (cb != NULL)
649 cb(s,SSL_CB_CONNECT_EXIT,ret);
d02b48c6
RE		 650 return(ret);
651 }
652
653
36d16f8e 654int ssl3_client_hello(SSL *s)
d02b48c6
RE		 655 {
656 unsigned char *buf;
657 unsigned char *p,*d;
09b6c2ef 658 int i;
d02b48c6 659 unsigned long Time,l;
09b6c2ef
DSH		 660#ifndef OPENSSL_NO_COMP
661 int j;
413c4f45 662 SSL_COMP *comp;
09b6c2ef 663#endif
d02b48c6
RE		 664
665 buf=(unsigned char *)s->init_buf->data;
666 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
667 {
213f08a6
DSH		 668 SSL_SESSION *sess = s->session;
669 if ((sess == NULL) ||
670 (sess->ssl_version != s->version) ||
671#ifdef OPENSSL_NO_TLSEXT
672 !sess->session_id_length ||
673#else
674 (!sess->session_id_length && !sess->tlsext_tick) ||
675#endif
676 (sess->not_resumable))
d02b48c6
RE		 677 {
678 if (!ssl_get_new_session(s,0))
679 goto err;
680 }
681 /* else use the pre-loaded session */
682
683 p=s->s3->client_random;
7bbcb2f6 684 Time=(unsigned long)time(NULL); /* Time */
d02b48c6 685 l2n(Time,p);
7c7667b8
NL		 686 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
687 goto err;
d02b48c6
RE		 688
689 /* Do the message type and length last */
690 d=p= &(buf[4]);
691
58964a49
RE		 692 *(p++)=s->version>>8;
693 *(p++)=s->version&0xff;
413c4f45 694 s->client_version=s->version;
d02b48c6
RE		 695
696 /* Random stuff */
697 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
698 p+=SSL3_RANDOM_SIZE;
699
700 /* Session ID */
701 if (s->new_session)
702 i=0;
703 else
704 i=s->session->session_id_length;
705 *(p++)=i;
706 if (i != 0)
707 {
27545970 708 if (i > (int)sizeof(s->session->session_id))
5574e0ed
BM		 709 {
710 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
711 goto err;
712 }
d02b48c6
RE		 713 memcpy(p,s->session->session_id,i);
714 p+=i;
715 }
716
717 /* Ciphers supported */
c6c2e313 718 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
d02b48c6
RE		 719 if (i == 0)
720 {
721 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
722 goto err;
723 }
724 s2n(i,p);
725 p+=i;
726
dfeab068 727 /* COMPRESSION */
09b6c2ef
DSH		 728#ifdef OPENSSL_NO_COMP
729 *(p++)=1;
730#else
566dda07
DSH		 731
732 if ((s->options & SSL_OP_NO_COMPRESSION)
733 || !s->ctx->comp_methods)
413c4f45
MC		 734 j=0;
735 else
f73e07cf 736 j=sk_SSL_COMP_num(s->ctx->comp_methods);
413c4f45
MC		 737 *(p++)=1+j;
738 for (i=0; i<j; i++)
739 {
f73e07cf 740 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
413c4f45
MC		 741 *(p++)=comp->id;
742 }
09b6c2ef 743#endif
413c4f45 744 *(p++)=0; /* Add the NULL method */
761772d7 745
ed3883d2 746#ifndef OPENSSL_NO_TLSEXT
761772d7 747 /* TLS extensions*/
36ca4ba6
BM		 748 if (ssl_prepare_clienthello_tlsext(s) <= 0)
749 {
750 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
751 goto err;
752 }
f1fd4544
BM		 753 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
754 {
ed3883d2
BM		 755 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
756 goto err;
f1fd4544 757 }
ed3883d2 758#endif
d02b48c6
RE		 759
760 l=(p-d);
761 d=buf;
762 *(d++)=SSL3_MT_CLIENT_HELLO;
763 l2n3(l,d);
764
765 s->state=SSL3_ST_CW_CLNT_HELLO_B;
766 /* number of bytes to write */
767 s->init_num=p-buf;
768 s->init_off=0;
769 }
770
771 /* SSL3_ST_CW_CLNT_HELLO_B */
772 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
773err:
774 return(-1);
775 }
776
36d16f8e 777int ssl3_get_server_hello(SSL *s)
d02b48c6 778 {
f73e07cf 779 STACK_OF(SSL_CIPHER) *sk;
babb3798 780 const SSL_CIPHER *c;
d02b48c6
RE		 781 unsigned char *p,*d;
782 int i,al,ok;
783 unsigned int j;
784 long n;
09b6c2ef 785#ifndef OPENSSL_NO_COMP
413c4f45 786 SSL_COMP *comp;
09b6c2ef 787#endif
d02b48c6 788
36d16f8e 789 n=s->method->ssl_get_message(s,
d02b48c6
RE		 790 SSL3_ST_CR_SRVR_HELLO_A,
791 SSL3_ST_CR_SRVR_HELLO_B,
36d16f8e 792 -1,
6434abbf 793 20000, /* ?? */
d02b48c6
RE		 794 &ok);
795
796 if (!ok) return((int)n);
36d16f8e 797
8711efb4 798 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
36d16f8e
BL		 799 {
800 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
801 {
802 if ( s->d1->send_cookie == 0)
803 {
804 s->s3->tmp.reuse_message = 1;
805 return 1;
806 }
807 else /* already sent a cookie */
808 {
809 al=SSL_AD_UNEXPECTED_MESSAGE;
aa4ce731 810 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
36d16f8e
BL		 811 goto f_err;
812 }
813 }
814 }
815
816 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
817 {
818 al=SSL_AD_UNEXPECTED_MESSAGE;
aa4ce731 819 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
36d16f8e
BL		 820 goto f_err;
821 }
822
48948d53 823 d=p=(unsigned char *)s->init_msg;
d02b48c6 824
58964a49 825 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
d02b48c6
RE		 826 {
827 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
58964a49
RE		 828 s->version=(s->version&0xff00)|p[1];
829 al=SSL_AD_PROTOCOL_VERSION;
830 goto f_err;
d02b48c6
RE		 831 }
832 p+=2;
833
834 /* load the server hello data */
835 /* load the server random */
836 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
837 p+=SSL3_RANDOM_SIZE;
838
839 /* get the session-id */
840 j= *(p++);
841
a4f53a1c 842 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
d02b48c6 843 {
a4f53a1c
BM		 844 al=SSL_AD_ILLEGAL_PARAMETER;
845 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
846 goto f_err;
d02b48c6 847 }
54a656ef 848
12bf56c0
DSH		 849#ifndef OPENSSL_NO_TLSEXT
850 /* check if we want to resume the session based on external pre-shared secret */
851 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
852 {
853 SSL_CIPHER *pref_cipher=NULL;
854 s->session->master_key_length=sizeof(s->session->master_key);
855 if (s->tls_session_secret_cb(s, s->session->master_key,
856 &s->session->master_key_length,
857 NULL, &pref_cipher,
858 s->tls_session_secret_cb_arg))
859 {
860 s->session->cipher = pref_cipher ?
861 pref_cipher : ssl_get_cipher_by_char(s, p+j);
862 }
863 }
864#endif /* OPENSSL_NO_TLSEXT */
865
b4cadc6e
BL		 866 if (j != 0 && j == s->session->session_id_length
867 && memcmp(p,s->session->session_id,j) == 0)
868 {
869 if(s->sid_ctx_length != s->session->sid_ctx_length
870 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
871 {
a4f53a1c 872 /* actually a client application bug */
b4cadc6e
BL		 873 al=SSL_AD_ILLEGAL_PARAMETER;
874 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
875 goto f_err;
876 }
877 s->hit=1;
878 }
58964a49 879 else /* a miss or crap from the other end */
d02b48c6 880 {
58964a49
RE		 881 /* If we were trying for session-id reuse, make a new
882 * SSL_SESSION so we don't stuff up other people */
d02b48c6 883 s->hit=0;
58964a49
RE		 884 if (s->session->session_id_length > 0)
885 {
886 if (!ssl_get_new_session(s,0))
887 {
888 al=SSL_AD_INTERNAL_ERROR;
889 goto f_err;
890 }
891 }
892 s->session->session_id_length=j;
893 memcpy(s->session->session_id,p,j); /* j could be 0 */
d02b48c6
RE		 894 }
895 p+=j;
896 c=ssl_get_cipher_by_char(s,p);
897 if (c == NULL)
898 {
899 /* unknown cipher */
58964a49 900 al=SSL_AD_ILLEGAL_PARAMETER;
d02b48c6
RE		 901 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
902 goto f_err;
903 }
d09677ac
DSH		 904 /* TLS v1.2 only ciphersuites require v1.2 or later */
905 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
906 (TLS1_get_version(s) < TLS1_2_VERSION))
907 {
908 al=SSL_AD_ILLEGAL_PARAMETER;
909 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
910 goto f_err;
911 }
d02b48c6
RE		 912 p+=ssl_put_cipher_by_char(s,NULL,NULL);
913
914 sk=ssl_get_ciphers_by_id(s);
f73e07cf 915 i=sk_SSL_CIPHER_find(sk,c);
d02b48c6
RE		 916 if (i < 0)
917 {
918 /* we did not say we would use this cipher */
58964a49 919 al=SSL_AD_ILLEGAL_PARAMETER;
d02b48c6
RE		 920 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
921 goto f_err;
922 }
923
6a8afe22
LJ		 924 /* Depending on the session caching (internal/external), the cipher
925 and/or cipher_id values may not be set. Make sure that
926 cipher_id is set and use it for comparison. */
927 if (s->session->cipher)
928 s->session->cipher_id = s->session->cipher->id;
c5662053 929 if (s->hit && (s->session->cipher_id != c->id))
d02b48c6 930 {
88f2a4cf
BM		 931/* Workaround is now obsolete */
932#if 0
58964a49 933 if (!(s->options &
d02b48c6 934 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
88f2a4cf 935#endif
d02b48c6 936 {
58964a49 937 al=SSL_AD_ILLEGAL_PARAMETER;
d02b48c6
RE		 938 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
939 goto f_err;
940 }
941 }
942 s->s3->tmp.new_cipher=c;
855a54a9
DSH		 943 /* Don't digest cached records if TLS v1.2: we may need them for
944 * client authentication.
945 */
238b6361 946 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
6ba71a71 947 goto f_err;
d02b48c6 948 /* lets get the compression algorithm */
dfeab068 949 /* COMPRESSION */
09b6c2ef
DSH		 950#ifdef OPENSSL_NO_COMP
951 if (*(p++) != 0)
952 {
953 al=SSL_AD_ILLEGAL_PARAMETER;
954 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
955 goto f_err;
956 }
2be3d6eb
DSH		 957 /* If compression is disabled we'd better not try to resume a session
958 * using compression.
959 */
960 if (s->session->compress_meth != 0)
961 {
962 al=SSL_AD_INTERNAL_ERROR;
963 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
964 goto f_err;
965 }
09b6c2ef 966#else
d02b48c6 967 j= *(p++);
dd792d62 968 if (s->hit && j != s->session->compress_meth)
2be3d6eb
DSH		 969 {
970 al=SSL_AD_ILLEGAL_PARAMETER;
971 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
972 goto f_err;
973 }
974 if (j == 0)
413c4f45 975 comp=NULL;
2be3d6eb
DSH		 976 else if (s->options & SSL_OP_NO_COMPRESSION)
977 {
978 al=SSL_AD_ILLEGAL_PARAMETER;
979 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
980 goto f_err;
981 }
413c4f45
MC		 982 else
983 comp=ssl3_comp_find(s->ctx->comp_methods,j);
984
985 if ((j != 0) && (comp == NULL))
d02b48c6 986 {
58964a49 987 al=SSL_AD_ILLEGAL_PARAMETER;
d02b48c6
RE		 988 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
989 goto f_err;
990 }
413c4f45
MC		 991 else
992 {
993 s->s3->tmp.new_compression=comp;
994 }
09b6c2ef 995#endif
761772d7 996
ed3883d2
BM		 997#ifndef OPENSSL_NO_TLSEXT
998 /* TLS extensions*/
13f6d57b 999 if (s->version >= SSL3_VERSION)
f1fd4544
BM		 1000 {
1001 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
1002 {
1003 /* 'al' set by ssl_parse_serverhello_tlsext */
36ca4ba6 1004 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
ed3883d2 1005 goto f_err;
f1fd4544 1006 }
36ca4ba6 1007 if (ssl_check_serverhello_tlsext(s) <= 0)
58ece833 1008 {
a291745e 1009 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
58ece833
BM		 1010 goto err;
1011 }
ed3883d2 1012 }
ed3883d2 1013#endif
d02b48c6
RE		 1014
1015 if (p != (d+n))
1016 {
1017 /* wrong packet length */
58964a49 1018 al=SSL_AD_DECODE_ERROR;
d02b48c6 1019 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
f3d781bb 1020 goto f_err;
d02b48c6
RE		 1021 }
1022
1023 return(1);
1024f_err:
1025 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1026err:
1027 return(-1);
1028 }
1029
36d16f8e 1030int ssl3_get_server_certificate(SSL *s)
d02b48c6
RE		 1031 {
1032 int al,i,ok,ret= -1;
1033 unsigned long n,nc,llen,l;
1034 X509 *x=NULL;
875a644a
RL		 1035 const unsigned char *q,*p;
1036 unsigned char *d;
f73e07cf 1037 STACK_OF(X509) *sk=NULL;
b56bce4f 1038 SESS_CERT *sc;
d02b48c6 1039 EVP_PKEY *pkey=NULL;
57376542 1040 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
d02b48c6 1041
36d16f8e 1042 n=s->method->ssl_get_message(s,
d02b48c6
RE		 1043 SSL3_ST_CR_CERT_A,
1044 SSL3_ST_CR_CERT_B,
1045 -1,
c0f5dd07 1046 s->max_cert_list,
d02b48c6
RE		 1047 &ok);
1048
1049 if (!ok) return((int)n);
1050
c1ca9d32 1051 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
2b13f803 1052 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
c1ca9d32 1053 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
d02b48c6
RE		 1054 {
1055 s->s3->tmp.reuse_message=1;
1056 return(1);
1057 }
1058
1059 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1060 {
58964a49 1061 al=SSL_AD_UNEXPECTED_MESSAGE;
d02b48c6
RE		 1062 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1063 goto f_err;
1064 }
875a644a 1065 p=d=(unsigned char *)s->init_msg;
d02b48c6 1066
f73e07cf 1067 if ((sk=sk_X509_new_null()) == NULL)
d02b48c6
RE		 1068 {
1069 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1070 goto err;
1071 }
1072
1073 n2l3(p,llen);
1074 if (llen+3 != n)
1075 {
58964a49 1076 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1077 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1078 goto f_err;
1079 }
1080 for (nc=0; nc<llen; )
1081 {
1082 n2l3(p,l);
1083 if ((l+nc+3) > llen)
1084 {
58964a49 1085 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1086 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1087 goto f_err;
1088 }
1089
1090 q=p;
1091 x=d2i_X509(NULL,&q,l);
1092 if (x == NULL)
1093 {
58964a49 1094 al=SSL_AD_BAD_CERTIFICATE;
d02b48c6
RE		 1095 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1096 goto f_err;
1097 }
1098 if (q != (p+l))
1099 {
58964a49 1100 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1101 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1102 goto f_err;
1103 }
f73e07cf 1104 if (!sk_X509_push(sk,x))
d02b48c6
RE		 1105 {
1106 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1107 goto err;
1108 }
1109 x=NULL;
1110 nc+=l+3;
1111 p=q;
1112 }
1113
1114 i=ssl_verify_cert_chain(s,sk);
bab53405 1115 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
82d5d46c 1116#ifndef OPENSSL_NO_KRB5
52b8dad8
BM		 1117 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1118 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
82d5d46c 1119#endif /* OPENSSL_NO_KRB5 */
52b8dad8 1120 )
d02b48c6
RE		 1121 {
1122 al=ssl_verify_alarm_type(s->verify_result);
1123 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1124 goto f_err;
1125 }
1fab73ac 1126 ERR_clear_error(); /* but we keep s->verify_result */
d02b48c6 1127
b56bce4f
BM		 1128 sc=ssl_sess_cert_new();
1129 if (sc == NULL) goto err;
d02b48c6 1130
b56bce4f
BM		 1131 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1132 s->session->sess_cert=sc;
d02b48c6 1133
b56bce4f 1134 sc->cert_chain=sk;
98e04f9e
BM		 1135 /* Inconsistency alert: cert_chain does include the peer's
1136 * certificate, which we don't include in s3_srvr.c */
f73e07cf 1137 x=sk_X509_value(sk,0);
d02b48c6 1138 sk=NULL;
2a1ef754 1139 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
d02b48c6
RE		 1140
1141 pkey=X509_get_pubkey(x);
1142
57376542 1143 /* VRS: allow null cert if auth == KRB5 */
52b8dad8
BM		 1144 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1145 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1146 ? 0 : 1;
f9b3bff6
RL		 1147
1148#ifdef KSSL_DEBUG
6343829a 1149 printf("pkey,x = %p, %p\n", pkey,x);
f9b3bff6 1150 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
52b8dad8
BM		 1151 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1152 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
f9b3bff6
RL		 1153#endif /* KSSL_DEBUG */
1154
2a1ef754 1155 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
d02b48c6
RE		 1156 {
1157 x=NULL;
1158 al=SSL3_AL_FATAL;
2a1ef754
RL		 1159 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1160 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
d02b48c6
RE		 1161 goto f_err;
1162 }
1163
1164 i=ssl_cert_type(x,pkey);
f9b3bff6 1165 if (need_cert && i < 0)
d02b48c6
RE		 1166 {
1167 x=NULL;
1168 al=SSL3_AL_FATAL;
2a1ef754
RL		 1169 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1170 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
d02b48c6
RE		 1171 goto f_err;
1172 }
1173
57376542
BM		 1174 if (need_cert)
1175 {
1176 sc->peer_cert_type=i;
1177 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1178 /* Why would the following ever happen?
1179 * We just created sc a couple of lines ago. */
1180 if (sc->peer_pkeys[i].x509 != NULL)
1181 X509_free(sc->peer_pkeys[i].x509);
1182 sc->peer_pkeys[i].x509=x;
1183 sc->peer_key= &(sc->peer_pkeys[i]);
1184
1185 if (s->session->peer != NULL)
1186 X509_free(s->session->peer);
1187 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1188 s->session->peer=x;
1189 }
1190 else
1191 {
1192 sc->peer_cert_type=i;
1193 sc->peer_key= NULL;
1194
1195 if (s->session->peer != NULL)
1196 X509_free(s->session->peer);
1197 s->session->peer=NULL;
1198 }
0dd2254d 1199 s->session->verify_result = s->verify_result;
d02b48c6
RE		 1200
1201 x=NULL;
1202 ret=1;
1203
1204 if (0)
1205 {
1206f_err:
1207 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1208 }
1209err:
a8236c8c
DSH		 1210 EVP_PKEY_free(pkey);
1211 X509_free(x);
f73e07cf 1212 sk_X509_pop_free(sk,X509_free);
d02b48c6
RE		 1213 return(ret);
1214 }
1215
36d16f8e 1216int ssl3_get_key_exchange(SSL *s)
d02b48c6 1217 {
bc36ee62 1218#ifndef OPENSSL_NO_RSA
d02b48c6
RE		 1219 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1220#endif
1221 EVP_MD_CTX md_ctx;
1222 unsigned char *param,*p;
1223 int al,i,j,param_len,ok;
52b8dad8 1224 long n,alg_k,alg_a;
d02b48c6 1225 EVP_PKEY *pkey=NULL;
a2f9200f 1226 const EVP_MD *md = NULL;
bc36ee62 1227#ifndef OPENSSL_NO_RSA
d02b48c6 1228 RSA *rsa=NULL;
79df9d62 1229#endif
bc36ee62 1230#ifndef OPENSSL_NO_DH
d02b48c6 1231 DH *dh=NULL;
58964a49 1232#endif
ea262260
BM		 1233#ifndef OPENSSL_NO_ECDH
1234 EC_KEY *ecdh = NULL;
1235 BN_CTX *bn_ctx = NULL;
1236 EC_POINT *srvr_ecpoint = NULL;
1237 int curve_nid = 0;
1238 int encoded_pt_len = 0;
1239#endif
d02b48c6 1240
37a7cd1a
BM		 1241 /* use same message size as in ssl3_get_certificate_request()
1242 * as ServerKeyExchange message may be skipped */
36d16f8e 1243 n=s->method->ssl_get_message(s,
d02b48c6
RE		 1244 SSL3_ST_CR_KEY_EXCH_A,
1245 SSL3_ST_CR_KEY_EXCH_B,
1246 -1,
c0f5dd07 1247 s->max_cert_list,
d02b48c6 1248 &ok);
d02b48c6
RE		 1249 if (!ok) return((int)n);
1250
1251 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1252 {
ddac1974
NL		 1253#ifndef OPENSSL_NO_PSK
1254 /* In plain PSK ciphersuite, ServerKeyExchange can be
1255 omitted if no identity hint is sent. Set
1256 session->sess_cert anyway to avoid problems
1257 later.*/
52b8dad8 1258 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
ddac1974
NL		 1259 {
1260 s->session->sess_cert=ssl_sess_cert_new();
1261 if (s->ctx->psk_identity_hint)
1262 OPENSSL_free(s->ctx->psk_identity_hint);
1263 s->ctx->psk_identity_hint = NULL;
1264 }
1265#endif
d02b48c6
RE		 1266 s->s3->tmp.reuse_message=1;
1267 return(1);
1268 }
1269
48948d53 1270 param=p=(unsigned char *)s->init_msg;
9d5cceac 1271 if (s->session->sess_cert != NULL)
d02b48c6 1272 {
bc36ee62 1273#ifndef OPENSSL_NO_RSA
b56bce4f 1274 if (s->session->sess_cert->peer_rsa_tmp != NULL)
d02b48c6 1275 {
b56bce4f
BM		 1276 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1277 s->session->sess_cert->peer_rsa_tmp=NULL;
d02b48c6
RE		 1278 }
1279#endif
bc36ee62 1280#ifndef OPENSSL_NO_DH
b56bce4f 1281 if (s->session->sess_cert->peer_dh_tmp)
d02b48c6 1282 {
b56bce4f
BM		 1283 DH_free(s->session->sess_cert->peer_dh_tmp);
1284 s->session->sess_cert->peer_dh_tmp=NULL;
d02b48c6 1285 }
ea262260
BM		 1286#endif
1287#ifndef OPENSSL_NO_ECDH
1288 if (s->session->sess_cert->peer_ecdh_tmp)
1289 {
1290 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1291 s->session->sess_cert->peer_ecdh_tmp=NULL;
1292 }
d02b48c6
RE		 1293#endif
1294 }
1295 else
1296 {
b56bce4f 1297 s->session->sess_cert=ssl_sess_cert_new();
d02b48c6
RE		 1298 }
1299
1300 param_len=0;
52b8dad8
BM		 1301 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1302 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
dbad1690 1303 EVP_MD_CTX_init(&md_ctx);
d02b48c6 1304
ddac1974 1305#ifndef OPENSSL_NO_PSK
52b8dad8
BM		 1306 if (alg_k & SSL_kPSK)
1307 {
ddac1974
NL		 1308 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1309
1310 al=SSL_AD_HANDSHAKE_FAILURE;
1311 n2s(p,i);
1312 param_len=i+2;
1313 /* Store PSK identity hint for later use, hint is used
1314 * in ssl3_send_client_key_exchange. Assume that the
1315 * maximum length of a PSK identity hint can be as
1316 * long as the maximum length of a PSK identity. */
1317 if (i > PSK_MAX_IDENTITY_LEN)
1318 {
1319 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1320 SSL_R_DATA_LENGTH_TOO_LONG);
1321 goto f_err;
1322 }
1323 if (param_len > n)
1324 {
1325 al=SSL_AD_DECODE_ERROR;
1326 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1327 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1328 goto f_err;
1329 }
1330 /* If received PSK identity hint contains NULL
1331 * characters, the hint is truncated from the first
1332 * NULL. p may not be ending with NULL, so create a
1333 * NULL-terminated string. */
1334 memcpy(tmp_id_hint, p, i);
1335 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1336 if (s->ctx->psk_identity_hint != NULL)
1337 OPENSSL_free(s->ctx->psk_identity_hint);
1338 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1339 if (s->ctx->psk_identity_hint == NULL)
1340 {
1341 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1342 goto f_err;
52b8dad8 1343 }
ddac1974
NL		 1344
1345 p+=i;
1346 n-=param_len;
1347 }
1348 else
1349#endif /* !OPENSSL_NO_PSK */
edc032b5
BL		 1350#ifndef OPENSSL_NO_SRP
1351 if (alg_k & SSL_kSRP)
1352 {
1353 n2s(p,i);
1354 param_len=i+2;
1355 if (param_len > n)
1356 {
1357 al=SSL_AD_DECODE_ERROR;
1358 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1359 goto f_err;
1360 }
1361 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1362 {
1363 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1364 goto err;
1365 }
1366 p+=i;
1367
1368 n2s(p,i);
1369 param_len+=i+2;
1370 if (param_len > n)
1371 {
1372 al=SSL_AD_DECODE_ERROR;
1373 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1374 goto f_err;
1375 }
1376 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1377 {
1378 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1379 goto err;
1380 }
1381 p+=i;
1382
1383 i = (unsigned int)(p[0]);
1384 p++;
1385 param_len+=i+1;
1386 if (param_len > n)
1387 {
1388 al=SSL_AD_DECODE_ERROR;
1389 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1390 goto f_err;
1391 }
1392 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1393 {
1394 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1395 goto err;
1396 }
1397 p+=i;
1398
1399 n2s(p,i);
1400 param_len+=i+2;
1401 if (param_len > n)
1402 {
1403 al=SSL_AD_DECODE_ERROR;
1404 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1405 goto f_err;
1406 }
1407 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1408 {
1409 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1410 goto err;
1411 }
1412 p+=i;
1413 n-=param_len;
1414
1415/* We must check if there is a certificate */
1416#ifndef OPENSSL_NO_RSA
1417 if (alg_a & SSL_aRSA)
1418 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1419#else
1420 if (0)
1421 ;
1422#endif
1423#ifndef OPENSSL_NO_DSA
1424 else if (alg_a & SSL_aDSS)
1425 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1426#endif
1427 }
1428 else
1429#endif /* !OPENSSL_NO_SRP */
bc36ee62 1430#ifndef OPENSSL_NO_RSA
52b8dad8 1431 if (alg_k & SSL_kRSA)
d02b48c6
RE		 1432 {
1433 if ((rsa=RSA_new()) == NULL)
1434 {
1435 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1436 goto err;
1437 }
1438 n2s(p,i);
1439 param_len=i+2;
1440 if (param_len > n)
1441 {
58964a49 1442 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1443 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1444 goto f_err;
1445 }
1446 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1447 {
1448 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1449 goto err;
1450 }
1451 p+=i;
1452
1453 n2s(p,i);
1454 param_len+=i+2;
1455 if (param_len > n)
1456 {
58964a49 1457 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1458 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1459 goto f_err;
1460 }
1461 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1462 {
1463 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1464 goto err;
1465 }
1466 p+=i;
1467 n-=param_len;
1468
d02b48c6 1469 /* this should be because we are using an export cipher */
52b8dad8 1470 if (alg_a & SSL_aRSA)
b56bce4f 1471 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
d02b48c6
RE		 1472 else
1473 {
5277d7cb 1474 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
d02b48c6
RE		 1475 goto err;
1476 }
b56bce4f 1477 s->session->sess_cert->peer_rsa_tmp=rsa;
6b521df3 1478 rsa=NULL;
d02b48c6 1479 }
bc36ee62 1480#else /* OPENSSL_NO_RSA */
3f2599d9
BM		 1481 if (0)
1482 ;
d02b48c6 1483#endif
bc36ee62 1484#ifndef OPENSSL_NO_DH
52b8dad8 1485 else if (alg_k & SSL_kEDH)
d02b48c6
RE		 1486 {
1487 if ((dh=DH_new()) == NULL)
1488 {
1489 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1490 goto err;
1491 }
1492 n2s(p,i);
1493 param_len=i+2;
1494 if (param_len > n)
1495 {
58964a49 1496 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1497 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1498 goto f_err;
1499 }
1500 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1501 {
1502 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1503 goto err;
1504 }
1505 p+=i;
1506
1507 n2s(p,i);
1508 param_len+=i+2;
1509 if (param_len > n)
1510 {
58964a49 1511 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1512 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1513 goto f_err;
1514 }
1515 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1516 {
1517 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1518 goto err;
1519 }
1520 p+=i;
1521
1522 n2s(p,i);
1523 param_len+=i+2;
1524 if (param_len > n)
1525 {
58964a49 1526 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1527 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1528 goto f_err;
1529 }
1530 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1531 {
1532 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1533 goto err;
1534 }
1535 p+=i;
1536 n-=param_len;
1537
bc36ee62 1538#ifndef OPENSSL_NO_RSA
52b8dad8 1539 if (alg_a & SSL_aRSA)
b56bce4f 1540 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
3f2599d9
BM		 1541#else
1542 if (0)
1543 ;
d02b48c6 1544#endif
bc36ee62 1545#ifndef OPENSSL_NO_DSA
52b8dad8 1546 else if (alg_a & SSL_aDSS)
b56bce4f 1547 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
d02b48c6
RE		 1548#endif
1549 /* else anonymous DH, so no certificate or pkey. */
1550
b56bce4f 1551 s->session->sess_cert->peer_dh_tmp=dh;
413c4f45 1552 dh=NULL;
d02b48c6 1553 }
52b8dad8 1554 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
d02b48c6 1555 {
58964a49 1556 al=SSL_AD_ILLEGAL_PARAMETER;
d02b48c6
RE		 1557 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1558 goto f_err;
1559 }
bc36ee62 1560#endif /* !OPENSSL_NO_DH */
ea262260
BM		 1561
1562#ifndef OPENSSL_NO_ECDH
52b8dad8 1563 else if (alg_k & SSL_kEECDH)
ea262260 1564 {
9dd84053
NL		 1565 EC_GROUP *ngroup;
1566 const EC_GROUP *group;
1567
ea262260
BM		 1568 if ((ecdh=EC_KEY_new()) == NULL)
1569 {
1570 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1571 goto err;
1572 }
1573
1574 /* Extract elliptic curve parameters and the
1575 * server's ephemeral ECDH public key.
1576 * Keep accumulating lengths of various components in
1577 * param_len and make sure it never exceeds n.
1578 */
1579
1580 /* XXX: For now we only support named (not generic) curves
d56349a2 1581 * and the ECParameters in this case is just three bytes.
ea262260 1582 */
d56349a2 1583 param_len=3;
ea262260
BM		 1584 if ((param_len > n) ||
1585 (*p != NAMED_CURVE_TYPE) ||
33273721 1586 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
ea262260
BM		 1587 {
1588 al=SSL_AD_INTERNAL_ERROR;
1589 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1590 goto f_err;
1591 }
1592
9dd84053
NL		 1593 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1594 if (ngroup == NULL)
1595 {
1596 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1597 goto err;
1598 }
1599 if (EC_KEY_set_group(ecdh, ngroup) == 0)
ea262260
BM		 1600 {
1601 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1602 goto err;
1603 }
9dd84053
NL		 1604 EC_GROUP_free(ngroup);
1605
1606 group = EC_KEY_get0_group(ecdh);
ea262260
BM		 1607
1608 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
9dd84053 1609 (EC_GROUP_get_degree(group) > 163))
ea262260
BM		 1610 {
1611 al=SSL_AD_EXPORT_RESTRICTION;
1612 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1613 goto f_err;
1614 }
1615
d56349a2 1616 p+=3;
ea262260
BM		 1617
1618 /* Next, get the encoded ECPoint */
9dd84053 1619 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
ea262260
BM		 1620 ((bn_ctx = BN_CTX_new()) == NULL))
1621 {
1622 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1623 goto err;
1624 }
1625
1626 encoded_pt_len = *p; /* length of encoded point */
1627 p+=1;
1628 param_len += (1 + encoded_pt_len);
1629 if ((param_len > n) ||
9dd84053 1630 (EC_POINT_oct2point(group, srvr_ecpoint,
ea262260
BM		 1631 p, encoded_pt_len, bn_ctx) == 0))
1632 {
1633 al=SSL_AD_DECODE_ERROR;
1634 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1635 goto f_err;
1636 }
1637
1638 n-=param_len;
1639 p+=encoded_pt_len;
1640
1641 /* The ECC/TLS specification does not mention
1642 * the use of DSA to sign ECParameters in the server
1643 * key exchange message. We do support RSA and ECDSA.
1644 */
1645 if (0) ;
1646#ifndef OPENSSL_NO_RSA
52b8dad8 1647 else if (alg_a & SSL_aRSA)
ea262260
BM		 1648 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1649#endif
1650#ifndef OPENSSL_NO_ECDSA
52b8dad8 1651 else if (alg_a & SSL_aECDSA)
ea262260
BM		 1652 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1653#endif
1654 /* else anonymous ECDH, so no certificate or pkey. */
9dd84053 1655 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
ea262260
BM		 1656 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1657 ecdh=NULL;
1658 BN_CTX_free(bn_ctx);
57594258 1659 bn_ctx = NULL;
9dd84053 1660 EC_POINT_free(srvr_ecpoint);
ea262260
BM		 1661 srvr_ecpoint = NULL;
1662 }
52b8dad8 1663 else if (alg_k)
ea262260
BM		 1664 {
1665 al=SSL_AD_UNEXPECTED_MESSAGE;
1666 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1667 goto f_err;
1668 }
1669#endif /* !OPENSSL_NO_ECDH */
dfeab068 1670
d02b48c6
RE		 1671
1672 /* p points to the next byte, there are 'n' bytes left */
1673
d02b48c6
RE		 1674 /* if it was signed, check the signature */
1675 if (pkey != NULL)
1676 {
238b6361 1677 if (TLS1_get_version(s) >= TLS1_2_VERSION)
a2f9200f
DSH		 1678 {
1679 int sigalg = tls12_get_sigid(pkey);
1680 /* Should never happen */
1681 if (sigalg == -1)
1682 {
1683 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1684 goto err;
1685 }
1686 /* Check key type is consistent with signature */
1687 if (sigalg != (int)p[1])
1688 {
1689 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1690 al=SSL_AD_DECODE_ERROR;
1691 goto f_err;
1692 }
1693 md = tls12_get_hash(p[0]);
1694 if (md == NULL)
1695 {
1696 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1697 al=SSL_AD_DECODE_ERROR;
1698 goto f_err;
1699 }
1700#ifdef SSL_DEBUG
1701fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1702#endif
1703 p += 2;
1704 n -= 2;
1705 }
1706 else
1707 md = EVP_sha1();
1708
d02b48c6
RE		 1709 n2s(p,i);
1710 n-=2;
1711 j=EVP_PKEY_size(pkey);
1712
1713 if ((i != n) || (n > j) || (n <= 0))
1714 {
1715 /* wrong packet length */
58964a49 1716 al=SSL_AD_DECODE_ERROR;
d02b48c6 1717 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
dfeab068 1718 goto f_err;
d02b48c6
RE		 1719 }
1720
bc36ee62 1721#ifndef OPENSSL_NO_RSA
238b6361 1722 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
d02b48c6
RE		 1723 {
1724 int num;
1725
1726 j=0;
1727 q=md_buf;
1728 for (num=2; num > 0; num--)
1729 {
086e32a6
DSH		 1730 EVP_MD_CTX_set_flags(&md_ctx,
1731 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
20d2186c
DSH		 1732 EVP_DigestInit_ex(&md_ctx,(num == 2)
1733 ?s->ctx->md5:s->ctx->sha1, NULL);
d02b48c6
RE		 1734 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1735 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1736 EVP_DigestUpdate(&md_ctx,param,param_len);
20d2186c 1737 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
d02b48c6
RE		 1738 q+=i;
1739 j+=i;
1740 }
1c80019a
DSH		 1741 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1742 pkey->pkey.rsa);
1743 if (i < 0)
d02b48c6 1744 {
58964a49 1745 al=SSL_AD_DECRYPT_ERROR;
d02b48c6
RE		 1746 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1747 goto f_err;
1748 }
1c80019a 1749 if (i == 0)
d02b48c6
RE		 1750 {
1751 /* bad signature */
58964a49 1752 al=SSL_AD_DECRYPT_ERROR;
d02b48c6
RE		 1753 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1754 goto f_err;
1755 }
1756 }
1757 else
1758#endif
ea262260 1759 {
a2f9200f 1760 EVP_VerifyInit_ex(&md_ctx, md, NULL);
ea262260
BM		 1761 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1762 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1763 EVP_VerifyUpdate(&md_ctx,param,param_len);
bab53405 1764 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
ea262260
BM		 1765 {
1766 /* bad signature */
1767 al=SSL_AD_DECRYPT_ERROR;
1768 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1769 goto f_err;
1770 }
1771 }
d02b48c6
RE		 1772 }
1773 else
1774 {
52b8dad8 1775 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
ddac1974 1776 /* aNULL or kPSK do not need public keys */
d02b48c6 1777 {
5277d7cb 1778 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
d02b48c6
RE		 1779 goto err;
1780 }
ddac1974 1781 /* still data left over */
d02b48c6
RE		 1782 if (n != 0)
1783 {
58964a49 1784 al=SSL_AD_DECODE_ERROR;
d02b48c6
RE		 1785 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1786 goto f_err;
1787 }
1788 }
a8236c8c 1789 EVP_PKEY_free(pkey);
dbad1690 1790 EVP_MD_CTX_cleanup(&md_ctx);
d02b48c6
RE		 1791 return(1);
1792f_err:
1793 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1794err:
a8236c8c 1795 EVP_PKEY_free(pkey);
bc36ee62 1796#ifndef OPENSSL_NO_RSA
6b521df3
BM		 1797 if (rsa != NULL)
1798 RSA_free(rsa);
1799#endif
bc36ee62 1800#ifndef OPENSSL_NO_DH
6b521df3
BM		 1801 if (dh != NULL)
1802 DH_free(dh);
ea262260
BM		 1803#endif
1804#ifndef OPENSSL_NO_ECDH
1805 BN_CTX_free(bn_ctx);
1806 EC_POINT_free(srvr_ecpoint);
1807 if (ecdh != NULL)
1808 EC_KEY_free(ecdh);
6b521df3 1809#endif
dbad1690 1810 EVP_MD_CTX_cleanup(&md_ctx);
d02b48c6
RE		 1811 return(-1);
1812 }
1813
36d16f8e 1814int ssl3_get_certificate_request(SSL *s)
d02b48c6
RE		 1815 {
1816 int ok,ret=0;
58964a49 1817 unsigned long n,nc,l;
8f829124 1818 unsigned int llen, ctype_num,i;
d02b48c6 1819 X509_NAME *xn=NULL;
875a644a
RL		 1820 const unsigned char *p,*q;
1821 unsigned char *d;
f73e07cf 1822 STACK_OF(X509_NAME) *ca_sk=NULL;
d02b48c6 1823
36d16f8e 1824 n=s->method->ssl_get_message(s,
d02b48c6
RE		 1825 SSL3_ST_CR_CERT_REQ_A,
1826 SSL3_ST_CR_CERT_REQ_B,
1827 -1,
c0f5dd07 1828 s->max_cert_list,
d02b48c6
RE		 1829 &ok);
1830
1831 if (!ok) return((int)n);
1832
1833 s->s3->tmp.cert_req=0;
1834
1835 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1836 {
1837 s->s3->tmp.reuse_message=1;
855a54a9
DSH		 1838 /* If we get here we don't need any cached handshake records
1839 * as we wont be doing client auth.
1840 */
1841 if (s->s3->handshake_buffer)
1842 {
1843 if (!ssl3_digest_cached_records(s))
1844 goto err;
1845 }
d02b48c6
RE		 1846 return(1);
1847 }
1848
1849 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1850 {
58964a49 1851 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
d02b48c6
RE		 1852 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1853 goto err;
1854 }
1855
58964a49
RE		 1856 /* TLS does not like anon-DH with client cert */
1857 if (s->version > SSL3_VERSION)
1858 {
52b8dad8 1859 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
58964a49
RE		 1860 {
1861 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1862 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1863 goto err;
1864 }
1865 }
1866
875a644a 1867 p=d=(unsigned char *)s->init_msg;
d02b48c6 1868
f73e07cf 1869 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
d02b48c6
RE		 1870 {
1871 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1872 goto err;
1873 }
1874
1875 /* get the certificate types */
1876 ctype_num= *(p++);
1877 if (ctype_num > SSL3_CT_NUMBER)
1878 ctype_num=SSL3_CT_NUMBER;
1879 for (i=0; i<ctype_num; i++)
1880 s->s3->tmp.ctype[i]= p[i];
1881 p+=ctype_num;
238b6361 1882 if (TLS1_get_version(s) >= TLS1_2_VERSION)
a2f9200f 1883 {
8f829124
DSH		 1884 n2s(p, llen);
1885 /* Check we have enough room for signature algorithms and
1886 * following length value.
1887 */
1888 if ((unsigned long)(p - d + llen + 2) > n)
1889 {
1890 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1891 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1892 goto err;
1893 }
1894 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1895 {
1896 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1897 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1898 goto err;
1899 }
1900 p += llen;
a2f9200f 1901 }
d02b48c6
RE		 1902
1903 /* get the CA RDNs */
1904 n2s(p,llen);
dfeab068
RE		 1905#if 0
1906{
1907FILE *out;
1908out=fopen("/tmp/vsign.der","w");
1909fwrite(p,1,llen,out);
1910fclose(out);
1911}
1912#endif
1913
8f829124 1914 if ((unsigned long)(p - d + llen) != n)
d02b48c6 1915 {
58964a49 1916 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
d02b48c6
RE		 1917 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1918 goto err;
1919 }
1920
1921 for (nc=0; nc<llen; )
1922 {
1923 n2s(p,l);
1924 if ((l+nc+2) > llen)
1925 {
58964a49 1926 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
d02b48c6 1927 goto cont; /* netscape bugs */
58964a49 1928 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
d02b48c6
RE		 1929 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1930 goto err;
1931 }
1932
1933 q=p;
1934
1935 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1936 {
657e60fa 1937 /* If netscape tolerance is on, ignore errors */
58964a49 1938 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
d02b48c6
RE		 1939 goto cont;
1940 else
1941 {
58964a49 1942 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
d02b48c6
RE		 1943 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1944 goto err;
1945 }
1946 }
1947
1948 if (q != (p+l))
1949 {
58964a49 1950 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
d02b48c6
RE		 1951 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1952 goto err;
1953 }
f73e07cf 1954 if (!sk_X509_NAME_push(ca_sk,xn))
d02b48c6
RE		 1955 {
1956 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1957 goto err;
1958 }
1959
1960 p+=l;
1961 nc+=l+2;
1962 }
1963
1964 if (0)
1965 {
1966cont:
1967 ERR_clear_error();
1968 }
1969
657e60fa 1970 /* we should setup a certificate to return.... */
d02b48c6
RE		 1971 s->s3->tmp.cert_req=1;
1972 s->s3->tmp.ctype_num=ctype_num;
1973 if (s->s3->tmp.ca_names != NULL)
f73e07cf 1974 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
d02b48c6
RE		 1975 s->s3->tmp.ca_names=ca_sk;
1976 ca_sk=NULL;
1977
1978 ret=1;
1979err:
f73e07cf 1980 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
d02b48c6
RE		 1981 return(ret);
1982 }
1983
ccd86b68 1984static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
d02b48c6
RE		 1985 {
1986 return(X509_NAME_cmp(*a,*b));
1987 }
6434abbf
DSH		 1988#ifndef OPENSSL_NO_TLSEXT
1989int ssl3_get_new_session_ticket(SSL *s)
1990 {
1991 int ok,al,ret=0, ticklen;
1992 long n;
1993 const unsigned char *p;
1994 unsigned char *d;
1995
1996 n=s->method->ssl_get_message(s,
1997 SSL3_ST_CR_SESSION_TICKET_A,
1998 SSL3_ST_CR_SESSION_TICKET_B,
1999 -1,
2000 16384,
2001 &ok);
2002
2003 if (!ok)
2004 return((int)n);
2005
2006 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2007 {
2008 s->s3->tmp.reuse_message=1;
2009 return(1);
2010 }
2011 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2012 {
2013 al=SSL_AD_UNEXPECTED_MESSAGE;
2014 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2015 goto f_err;
2016 }
2017 if (n < 6)
2018 {
2019 /* need at least ticket_lifetime_hint + ticket length */
f3d781bb 2020 al = SSL_AD_DECODE_ERROR;
6434abbf
DSH		 2021 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2022 goto f_err;
2023 }
8025e251 2024
6434abbf
DSH		 2025 p=d=(unsigned char *)s->init_msg;
2026 n2l(p, s->session->tlsext_tick_lifetime_hint);
2027 n2s(p, ticklen);
2028 /* ticket_lifetime_hint + ticket_length + ticket */
2029 if (ticklen + 6 != n)
2030 {
f3d781bb 2031 al = SSL_AD_DECODE_ERROR;
761772d7 2032 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
6434abbf
DSH		 2033 goto f_err;
2034 }
2035 if (s->session->tlsext_tick)
2036 {
2037 OPENSSL_free(s->session->tlsext_tick);
2038 s->session->tlsext_ticklen = 0;
2039 }
2040 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2041 if (!s->session->tlsext_tick)
2042 {
761772d7 2043 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
6434abbf
DSH		 2044 goto err;
2045 }
2046 memcpy(s->session->tlsext_tick, p, ticklen);
2047 s->session->tlsext_ticklen = ticklen;
4b4ba6a8
DSH		 2048 /* There are two ways to detect a resumed ticket sesion.
2049 * One is to set an appropriate session ID and then the server
2050 * must return a match in ServerHello. This allows the normal
2051 * client session ID matching to work and we know much
2052 * earlier that the ticket has been accepted.
2053 *
2054 * The other way is to set zero length session ID when the
2055 * ticket is presented and rely on the handshake to determine
2056 * session resumption.
2057 *
2058 * We choose the former approach because this fits in with
2059 * assumptions elsewhere in OpenSSL. The session ID is set
2060 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2061 * ticket.
2062 */
2063 EVP_Digest(p, ticklen,
2064 s->session->session_id, &s->session->session_id_length,
2065#ifndef OPENSSL_NO_SHA256
2066 EVP_sha256(), NULL);
2067#else
2068 EVP_sha1(), NULL);
2069#endif
6434abbf
DSH		 2070 ret=1;
2071 return(ret);
2072f_err:
2073 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2074err:
2075 return(-1);
2076 }
67c8e7f4
DSH		 2077
2078int ssl3_get_cert_status(SSL *s)
2079 {
2080 int ok, al;
aff686df 2081 unsigned long resplen,n;
67c8e7f4
DSH		 2082 const unsigned char *p;
2083
2084 n=s->method->ssl_get_message(s,
2085 SSL3_ST_CR_CERT_STATUS_A,
2086 SSL3_ST_CR_CERT_STATUS_B,
2087 SSL3_MT_CERTIFICATE_STATUS,
2088 16384,
2089 &ok);
2090
2091 if (!ok) return((int)n);
2092 if (n < 4)
2093 {
2094 /* need at least status type + length */
2095 al = SSL_AD_DECODE_ERROR;
2096 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2097 goto f_err;
2098 }
2099 p = (unsigned char *)s->init_msg;
2100 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2101 {
2102 al = SSL_AD_DECODE_ERROR;
2103 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2104 goto f_err;
2105 }
2106 n2l3(p, resplen);
2107 if (resplen + 4 != n)
2108 {
2109 al = SSL_AD_DECODE_ERROR;
2110 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2111 goto f_err;
2112 }
2113 if (s->tlsext_ocsp_resp)
2114 OPENSSL_free(s->tlsext_ocsp_resp);
2115 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2116 if (!s->tlsext_ocsp_resp)
2117 {
2118 al = SSL_AD_INTERNAL_ERROR;
2119 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2120 goto f_err;
2121 }
2122 s->tlsext_ocsp_resplen = resplen;
2123 if (s->ctx->tlsext_status_cb)
2124 {
2125 int ret;
2126 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2127 if (ret == 0)
2128 {
2129 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2130 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2131 goto f_err;
2132 }
2133 if (ret < 0)
2134 {
2135 al = SSL_AD_INTERNAL_ERROR;
2136 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2137 goto f_err;
2138 }
2139 }
2140 return 1;
2141f_err:
2142 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2143 return(-1);
2144 }
6434abbf 2145#endif
d02b48c6 2146
36d16f8e 2147int ssl3_get_server_done(SSL *s)
d02b48c6
RE		 2148 {
2149 int ok,ret=0;
2150 long n;
2151
36d16f8e 2152 n=s->method->ssl_get_message(s,
d02b48c6
RE		 2153 SSL3_ST_CR_SRVR_DONE_A,
2154 SSL3_ST_CR_SRVR_DONE_B,
2155 SSL3_MT_SERVER_DONE,
2156 30, /* should be very small, like 0 :-) */
2157 &ok);
2158
2159 if (!ok) return((int)n);
2160 if (n > 0)
2161 {
2162 /* should contain no data */
58964a49 2163 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
d02b48c6 2164 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
c59ba5b5 2165 return -1;
d02b48c6
RE		 2166 }
2167 ret=1;
2168 return(ret);
2169 }
2170
176f31dd 2171
36d16f8e 2172int ssl3_send_client_key_exchange(SSL *s)
d02b48c6 2173 {
79df9d62 2174 unsigned char *p,*d;
d02b48c6 2175 int n;
52b8dad8 2176 unsigned long alg_k;
bc36ee62 2177#ifndef OPENSSL_NO_RSA
79df9d62 2178 unsigned char *q;
d02b48c6 2179 EVP_PKEY *pkey=NULL;
79df9d62 2180#endif
bc36ee62 2181#ifndef OPENSSL_NO_KRB5
57376542 2182 KSSL_ERR kssl_err;
bc36ee62 2183#endif /* OPENSSL_NO_KRB5 */
ea262260
BM		 2184#ifndef OPENSSL_NO_ECDH
2185 EC_KEY *clnt_ecdh = NULL;
9dd84053 2186 const EC_POINT *srvr_ecpoint = NULL;
ea262260
BM		 2187 EVP_PKEY *srvr_pub_pkey = NULL;
2188 unsigned char *encodedPoint = NULL;
2189 int encoded_pt_len = 0;
2190 BN_CTX * bn_ctx = NULL;
2191#endif
d02b48c6
RE		 2192
2193 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2194 {
2195 d=(unsigned char *)s->init_buf->data;
2196 p= &(d[4]);
2197
52b8dad8 2198 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
d02b48c6 2199
57376542
BM		 2200 /* Fool emacs indentation */
2201 if (0) {}
bc36ee62 2202#ifndef OPENSSL_NO_RSA
52b8dad8 2203 else if (alg_k & SSL_kRSA)
d02b48c6
RE		 2204 {
2205 RSA *rsa;
dfeab068 2206 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
d02b48c6 2207
b56bce4f
BM		 2208 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2209 rsa=s->session->sess_cert->peer_rsa_tmp;
d02b48c6
RE		 2210 else
2211 {
b56bce4f 2212 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
d02b48c6
RE		 2213 if ((pkey == NULL) ||
2214 (pkey->type != EVP_PKEY_RSA) ||
2215 (pkey->pkey.rsa == NULL))
2216 {
5277d7cb 2217 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
d02b48c6
RE		 2218 goto err;
2219 }
2220 rsa=pkey->pkey.rsa;
50596582 2221 EVP_PKEY_free(pkey);
d02b48c6
RE		 2222 }
2223
413c4f45
MC		 2224 tmp_buf[0]=s->client_version>>8;
2225 tmp_buf[1]=s->client_version&0xff;
54a656ef 2226 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
e7f97e2d 2227 goto err;
d02b48c6 2228
54a656ef 2229 s->session->master_key_length=sizeof tmp_buf;
d02b48c6 2230
58964a49
RE		 2231 q=p;
2232 /* Fix buf for TLS and beyond */
2233 if (s->version > SSL3_VERSION)
2234 p+=2;
54a656ef 2235 n=RSA_public_encrypt(sizeof tmp_buf,
58964a49 2236 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
dfeab068
RE		 2237#ifdef PKCS1_CHECK
2238 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2239 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2240#endif
d02b48c6
RE		 2241 if (n <= 0)
2242 {
2243 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2244 goto err;
2245 }
2246
58964a49
RE		 2247 /* Fix buf for TLS and beyond */
2248 if (s->version > SSL3_VERSION)
2249 {
2250 s2n(n,q);
2251 n+=2;
2252 }
2253
d02b48c6 2254 s->session->master_key_length=
58964a49 2255 s->method->ssl3_enc->generate_master_secret(s,
d02b48c6 2256 s->session->master_key,
54a656ef 2257 tmp_buf,sizeof tmp_buf);
4579924b 2258 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
d02b48c6 2259 }
f9b3bff6 2260#endif
bc36ee62 2261#ifndef OPENSSL_NO_KRB5
52b8dad8 2262 else if (alg_k & SSL_kKRB5)
57376542
BM		 2263 {
2264 krb5_error_code krb5rc;
2265 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2266 /* krb5_data krb5_ap_req; */
2267 krb5_data *enc_ticket;
2268 krb5_data authenticator, *authp = NULL;
2a1ef754 2269 EVP_CIPHER_CTX ciph_ctx;
ef236ec3 2270 const EVP_CIPHER *enc = NULL;
2a1ef754
RL		 2271 unsigned char iv[EVP_MAX_IV_LENGTH];
2272 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2273 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2274 + EVP_MAX_IV_LENGTH];
2275 int padl, outl = sizeof(epms);
f9b3bff6 2276
de941e28
DSH		 2277 EVP_CIPHER_CTX_init(&ciph_ctx);
2278
f9b3bff6 2279#ifdef KSSL_DEBUG
57376542 2280 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
7e69565f 2281 alg_k, SSL_kKRB5);
f9b3bff6
RL		 2282#endif /* KSSL_DEBUG */
2283
2a1ef754
RL		 2284 authp = NULL;
2285#ifdef KRB5SENDAUTH
2286 if (KRB5SENDAUTH) authp = &authenticator;
2287#endif /* KRB5SENDAUTH */
2288
57376542 2289 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2a1ef754
RL		 2290 &kssl_err);
2291 enc = kssl_map_enc(kssl_ctx->enctype);
57376542
BM		 2292 if (enc == NULL)
2293 goto err;
f9b3bff6 2294#ifdef KSSL_DEBUG
57376542
BM		 2295 {
2296 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2297 if (krb5rc && kssl_err.text)
2a1ef754 2298 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
57376542 2299 }
f9b3bff6
RL		 2300#endif /* KSSL_DEBUG */
2301
57376542
BM		 2302 if (krb5rc)
2303 {
2304 ssl3_send_alert(s,SSL3_AL_FATAL,
2a1ef754 2305 SSL_AD_HANDSHAKE_FAILURE);
57376542 2306 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2a1ef754 2307 kssl_err.reason);
57376542
BM		 2308 goto err;
2309 }
f9b3bff6 2310
2a1ef754
RL		 2311 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2312 ** in place of RFC 2712 KerberosWrapper, as in:
2313 **
57376542
BM		 2314 ** Send ticket (copy to *p, set n = length)
2315 ** n = krb5_ap_req.length;
2316 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2317 ** if (krb5_ap_req.data)
2318 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2319 **
2a1ef754
RL		 2320 ** Now using real RFC 2712 KerberosWrapper
2321 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2322 ** Note: 2712 "opaque" types are here replaced
2323 ** with a 2-byte length followed by the value.
2324 ** Example:
2325 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2326 ** Where "xx xx" = length bytes. Shown here with
2327 ** optional authenticator omitted.
2328 */
2329
2330 /* KerberosWrapper.Ticket */
2331 s2n(enc_ticket->length,p);
2332 memcpy(p, enc_ticket->data, enc_ticket->length);
2333 p+= enc_ticket->length;
2334 n = enc_ticket->length + 2;
2335
2336 /* KerberosWrapper.Authenticator */
2337 if (authp && authp->length)
2338 {
2339 s2n(authp->length,p);
2340 memcpy(p, authp->data, authp->length);
2341 p+= authp->length;
2342 n+= authp->length + 2;
2343
2344 free(authp->data);
2345 authp->data = NULL;
2346 authp->length = 0;
2347 }
2348 else
2349 {
2350 s2n(0,p);/* null authenticator length */
2351 n+=2;
2352 }
2353
cbb92dfa
RL		 2354 tmp_buf[0]=s->client_version>>8;
2355 tmp_buf[1]=s->client_version&0xff;
2356 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2357 goto err;
2a1ef754
RL		 2358
2359 /* 20010420 VRS. Tried it this way; failed.
581f1c84 2360 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2a1ef754
RL		 2361 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2362 ** kssl_ctx->length);
581f1c84 2363 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2a1ef754
RL		 2364 */
2365
54a656ef 2366 memset(iv, 0, sizeof iv); /* per RFC 1510 */
7beb4087
RL		 2367 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2368 kssl_ctx->key,iv);
2a1ef754 2369 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
54a656ef 2370 sizeof tmp_buf);
581f1c84 2371 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2a1ef754 2372 outl += padl;
ef236ec3 2373 if (outl > (int)sizeof epms)
5574e0ed
BM		 2374 {
2375 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2376 goto err;
2377 }
2a1ef754
RL		 2378 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2379
2380 /* KerberosWrapper.EncryptedPreMasterSecret */
2381 s2n(outl,p);
2382 memcpy(p, epms, outl);
2383 p+=outl;
2384 n+=outl + 2;
2385
57376542 2386 s->session->master_key_length=
52b8dad8 2387 s->method->ssl3_enc->generate_master_secret(s,
2a1ef754 2388 s->session->master_key,
54a656ef 2389 tmp_buf, sizeof tmp_buf);
2a1ef754 2390
4579924b
RL		 2391 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2392 OPENSSL_cleanse(epms, outl);
57376542 2393 }
d02b48c6 2394#endif
bc36ee62 2395#ifndef OPENSSL_NO_DH
52b8dad8 2396 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
d02b48c6
RE		 2397 {
2398 DH *dh_srvr,*dh_clnt;
8e1dc4d7 2399 SESS_CERT *scert = s->session->sess_cert;
d02b48c6 2400
8e1dc4d7 2401 if (scert == NULL)
e194fe8f
BM		 2402 {
2403 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2404 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2405 goto err;
2406 }
2407
8e1dc4d7
DSH		 2408 if (scert->peer_dh_tmp != NULL)
2409 dh_srvr=scert->peer_dh_tmp;
d02b48c6
RE		 2410 else
2411 {
2412 /* we get them from the cert */
8e1dc4d7
DSH		 2413 int idx = scert->peer_cert_type;
2414 EVP_PKEY *spkey = NULL;
2415 dh_srvr = NULL;
2416 if (idx >= 0)
2417 spkey = X509_get_pubkey(
2418 scert->peer_pkeys[idx].x509);
2419 if (spkey)
2420 {
2421 dh_srvr = EVP_PKEY_get1_DH(spkey);
2422 EVP_PKEY_free(spkey);
2423 }
2424 if (dh_srvr == NULL)
2425 {
2426 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2427 ERR_R_INTERNAL_ERROR);
2428 goto err;
2429 }
d02b48c6 2430 }
8e1dc4d7 2431
d02b48c6
RE		 2432 /* generate a new random key */
2433 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2434 {
2435 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2436 goto err;
2437 }
2438 if (!DH_generate_key(dh_clnt))
2439 {
2440 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
ca933576 2441 DH_free(dh_clnt);
d02b48c6
RE		 2442 goto err;
2443 }
2444
2445 /* use the 'p' output buffer for the DH key, but
2446 * make sure to clear it out afterwards */
58964a49 2447
d02b48c6 2448 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
8e1dc4d7
DSH		 2449 if (scert->peer_dh_tmp == NULL)
2450 DH_free(dh_srvr);
58964a49 2451
d02b48c6
RE		 2452 if (n <= 0)
2453 {
2454 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
ca933576 2455 DH_free(dh_clnt);
d02b48c6
RE		 2456 goto err;
2457 }
2458
2459 /* generate master key from the result */
2460 s->session->master_key_length=
58964a49 2461 s->method->ssl3_enc->generate_master_secret(s,
d02b48c6
RE		 2462 s->session->master_key,p,n);
2463 /* clean up */
2464 memset(p,0,n);
2465
2466 /* send off the data */
2467 n=BN_num_bytes(dh_clnt->pub_key);
2468 s2n(n,p);
2469 BN_bn2bin(dh_clnt->pub_key,p);
2470 n+=2;
2471
2472 DH_free(dh_clnt);
2473
2474 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2475 }
d02b48c6 2476#endif
ea262260
BM		 2477
2478#ifndef OPENSSL_NO_ECDH
52b8dad8 2479 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
ea262260 2480 {
9dd84053
NL		 2481 const EC_GROUP *srvr_group = NULL;
2482 EC_KEY *tkey;
ea262260 2483 int ecdh_clnt_cert = 0;
968766ca 2484 int field_size = 0;
ea262260
BM		 2485
2486 /* Did we send out the client's
2487 * ECDH share for use in premaster
2488 * computation as part of client certificate?
2489 * If so, set ecdh_clnt_cert to 1.
2490 */
52b8dad8 2491 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
ea262260
BM		 2492 {
2493 /* XXX: For now, we do not support client
2494 * authentication using ECDH certificates.
2495 * To add such support, one needs to add
2496 * code that checks for appropriate
2497 * conditions and sets ecdh_clnt_cert to 1.
2498 * For example, the cert have an ECC
2499 * key on the same curve as the server's
2500 * and the key should be authorized for
2501 * key agreement.
2502 *
2503 * One also needs to add code in ssl3_connect
2504 * to skip sending the certificate verify
2505 * message.
2506 *
2507 * if ((s->cert->key->privatekey != NULL) &&
2508 * (s->cert->key->privatekey->type ==
0c7141a3 2509 * EVP_PKEY_EC) && ...)
ea262260
BM		 2510 * ecdh_clnt_cert = 1;
2511 */
2512 }
2513
2514 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2515 {
9dd84053 2516 tkey = s->session->sess_cert->peer_ecdh_tmp;
ea262260
BM		 2517 }
2518 else
2519 {
2520 /* Get the Server Public Key from Cert */
2521 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2522 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2523 if ((srvr_pub_pkey == NULL) ||
5488bb61 2524 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
9dd84053 2525 (srvr_pub_pkey->pkey.ec == NULL))
ea262260
BM		 2526 {
2527 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2528 ERR_R_INTERNAL_ERROR);
2529 goto err;
2530 }
2531
9dd84053 2532 tkey = srvr_pub_pkey->pkey.ec;
ea262260
BM		 2533 }
2534
9dd84053
NL		 2535 srvr_group = EC_KEY_get0_group(tkey);
2536 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2537
ea262260
BM		 2538 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2539 {
2540 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2541 ERR_R_INTERNAL_ERROR);
2542 goto err;
2543 }
2544
2545 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2546 {
2547 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2548 goto err;
2549 }
2550
9dd84053
NL		 2551 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2552 {
2553 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2554 goto err;
2555 }
ea262260
BM		 2556 if (ecdh_clnt_cert)
2557 {
57376542 2558 /* Reuse key info from our certificate
ea262260
BM		 2559 * We only need our private key to perform
2560 * the ECDH computation.
2561 */
9dd84053
NL		 2562 const BIGNUM *priv_key;
2563 tkey = s->cert->key->privatekey->pkey.ec;
2564 priv_key = EC_KEY_get0_private_key(tkey);
2565 if (priv_key == NULL)
2566 {
2567 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2568 goto err;
2569 }
2570 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2571 {
2572 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2573 goto err;
2574 }
ea262260
BM		 2575 }
2576 else
2577 {
2578 /* Generate a new ECDH key pair */
2579 if (!(EC_KEY_generate_key(clnt_ecdh)))
2580 {
2581 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2582 goto err;
2583 }
2584 }
2585
57376542
BM		 2586 /* use the 'p' output buffer for the ECDH key, but
2587 * make sure to clear it out afterwards
ea262260
BM		 2588 */
2589
9dd84053 2590 field_size = EC_GROUP_get_degree(srvr_group);
968766ca
BM		 2591 if (field_size <= 0)
2592 {
2593 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2594 ERR_R_ECDH_LIB);
2595 goto err;
2596 }
d56349a2 2597 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
ea262260 2598 if (n <= 0)
57376542
BM		 2599 {
2600 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
ea262260 2601 ERR_R_ECDH_LIB);
57376542 2602 goto err;
ea262260
BM		 2603 }
2604
57376542
BM		 2605 /* generate master key from the result */
2606 s->session->master_key_length = s->method->ssl3_enc \
ea262260
BM		 2607 -> generate_master_secret(s,
2608 s->session->master_key,
2609 p, n);
2610
57376542 2611 memset(p, 0, n); /* clean up */
ea262260
BM		 2612
2613 if (ecdh_clnt_cert)
2614 {
2615 /* Send empty client key exch message */
2616 n = 0;
2617 }
2618 else
2619 {
2620 /* First check the size of encoding and
2621 * allocate memory accordingly.
2622 */
2623 encoded_pt_len =
9dd84053
NL		 2624 EC_POINT_point2oct(srvr_group,
2625 EC_KEY_get0_public_key(clnt_ecdh),
ea262260
BM		 2626 POINT_CONVERSION_UNCOMPRESSED,
2627 NULL, 0, NULL);
2628
2629 encodedPoint = (unsigned char *)
2630 OPENSSL_malloc(encoded_pt_len *
2631 sizeof(unsigned char));
2632 bn_ctx = BN_CTX_new();
2633 if ((encodedPoint == NULL) ||
2634 (bn_ctx == NULL))
2635 {
2636 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2637 goto err;
2638 }
2639
2640 /* Encode the public key */
9dd84053
NL		 2641 n = EC_POINT_point2oct(srvr_group,
2642 EC_KEY_get0_public_key(clnt_ecdh),
ea262260
BM		 2643 POINT_CONVERSION_UNCOMPRESSED,
2644 encodedPoint, encoded_pt_len, bn_ctx);
2645
2646 *p = n; /* length of encoded point */
57376542 2647 /* Encoded point will be copied here */
ea262260
BM		 2648 p += 1;
2649 /* copy the point */
2650 memcpy((unsigned char *)p, encodedPoint, n);
2651 /* increment n to account for length field */
2652 n += 1;
2653 }
2654
2655 /* Free allocated memory */
2656 BN_CTX_free(bn_ctx);
2657 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2658 if (clnt_ecdh != NULL)
ea262260 2659 EC_KEY_free(clnt_ecdh);
ea262260
BM		 2660 EVP_PKEY_free(srvr_pub_pkey);
2661 }
2662#endif /* !OPENSSL_NO_ECDH */
0e1dba93
DSH		 2663 else if (alg_k & SSL_kGOST)
2664 {
2665 /* GOST key exchange message creation */
2666 EVP_PKEY_CTX *pkey_ctx;
2667 X509 *peer_cert;
2668 size_t msglen;
2669 unsigned int md_len;
2670 int keytype;
f0288f05 2671 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
0e1dba93
DSH		 2672 EVP_MD_CTX *ukm_hash;
2673 EVP_PKEY *pub_key;
2674
2675 /* Get server sertificate PKEY and create ctx from it */
2676 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2677 if (!peer_cert)
2678 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2679 if (!peer_cert) {
2680 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2681 goto err;
2682 }
2683
2684 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2685 /* If we have send a certificate, and certificate key
2686
2687 * parameters match those of server certificate, use
2688 * certificate key for key exchange
2689 */
2690
2691 /* Otherwise, generate ephemeral key pair */
2692
2693 EVP_PKEY_encrypt_init(pkey_ctx);
2694 /* Generate session key */
2695 RAND_bytes(premaster_secret,32);
2696 /* If we have client certificate, use its secret as peer key */
f0288f05
DSH		 2697 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2698 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
0e1dba93
DSH		 2699 /* If there was an error - just ignore it. Ephemeral key
2700 * would be used
2701 */
2702 ERR_clear_error();
f0288f05 2703 }
0e1dba93
DSH		 2704 }
2705 /* Compute shared IV and store it in algorithm-specific
2706 * context data */
2707 ukm_hash = EVP_MD_CTX_create();
2708 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2709 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2710 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2711 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2712 EVP_MD_CTX_destroy(ukm_hash);
2713 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2714 8,shared_ukm)<0) {
2715 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2716 SSL_R_LIBRARY_BUG);
2717 goto err;
2718 }
2719 /* Make GOST keytransport blob message */
2720 /*Encapsulate it into sequence */
2721 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
f0288f05
DSH		 2722 msglen=255;
2723 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
0e1dba93
DSH		 2724 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2725 SSL_R_LIBRARY_BUG);
2726 goto err;
f0288f05
DSH		 2727 }
2728 if (msglen >= 0x80)
2729 {
2730 *(p++)=0x81;
2731 *(p++)= msglen & 0xff;
2732 n=msglen+3;
2733 }
2734 else
2735 {
2736 *(p++)= msglen & 0xff;
2737 n=msglen+2;
2738 }
2739 memcpy(p, tmp, msglen);
2740 /* Check if pubkey from client certificate was used */
2741 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2742 {
2743 /* Set flag "skip certificate verify" */
2744 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2745 }
0e1dba93
DSH		 2746 EVP_PKEY_CTX_free(pkey_ctx);
2747 s->session->master_key_length=
2748 s->method->ssl3_enc->generate_master_secret(s,
2749 s->session->master_key,premaster_secret,32);
2750 EVP_PKEY_free(pub_key);
2751
2752 }
edc032b5
BL		 2753#ifndef OPENSSL_NO_SRP
2754 else if (alg_k & SSL_kSRP)
2755 {
2756 if (s->srp_ctx.A != NULL)
2757 {
2758 /* send off the data */
2759 n=BN_num_bytes(s->srp_ctx.A);
2760 s2n(n,p);
2761 BN_bn2bin(s->srp_ctx.A,p);
2762 n+=2;
2763 }
2764 else
2765 {
2766 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2767 goto err;
2768 }
2769 if (s->session->srp_username != NULL)
2770 OPENSSL_free(s->session->srp_username);
2771 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2772 if (s->session->srp_username == NULL)
2773 {
2774 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2775 ERR_R_MALLOC_FAILURE);
2776 goto err;
2777 }
2778
2779 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2780 {
23bc7961 2781 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
edc032b5
BL		 2782 goto err;
2783 }
2784 }
2785#endif
ddac1974 2786#ifndef OPENSSL_NO_PSK
52b8dad8 2787 else if (alg_k & SSL_kPSK)
ddac1974
NL		 2788 {
2789 char identity[PSK_MAX_IDENTITY_LEN];
2790 unsigned char *t = NULL;
2791 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2792 unsigned int pre_ms_len = 0, psk_len = 0;
2793 int psk_err = 1;
2794
2795 n = 0;
2796 if (s->psk_client_callback == NULL)
2797 {
2798 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2799 SSL_R_PSK_NO_CLIENT_CB);
2800 goto err;
2801 }
2802
2803 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2804 identity, PSK_MAX_IDENTITY_LEN,
2805 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2806 if (psk_len > PSK_MAX_PSK_LEN)
2807 {
2808 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2809 ERR_R_INTERNAL_ERROR);
2810 goto psk_err;
2811 }
2812 else if (psk_len == 0)
2813 {
2814 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2815 SSL_R_PSK_IDENTITY_NOT_FOUND);
2816 goto psk_err;
2817 }
2818
2819 /* create PSK pre_master_secret */
2820 pre_ms_len = 2+psk_len+2+psk_len;
2821 t = psk_or_pre_ms;
2822 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2823 s2n(psk_len, t);
2824 memset(t, 0, psk_len);
2825 t+=psk_len;
2826 s2n(psk_len, t);
2827
2828 if (s->session->psk_identity_hint != NULL)
2829 OPENSSL_free(s->session->psk_identity_hint);
2830 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2831 if (s->ctx->psk_identity_hint != NULL &&
2832 s->session->psk_identity_hint == NULL)
2833 {
2834 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2835 ERR_R_MALLOC_FAILURE);
2836 goto psk_err;
2837 }
2838
2839 if (s->session->psk_identity != NULL)
2840 OPENSSL_free(s->session->psk_identity);
2841 s->session->psk_identity = BUF_strdup(identity);
2842 if (s->session->psk_identity == NULL)
2843 {
2844 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2845 ERR_R_MALLOC_FAILURE);
2846 goto psk_err;
2847 }
2848
2849 s->session->master_key_length =
2850 s->method->ssl3_enc->generate_master_secret(s,
2851 s->session->master_key,
2852 psk_or_pre_ms, pre_ms_len);
2853 n = strlen(identity);
2854 s2n(n, p);
2855 memcpy(p, identity, n);
2856 n+=2;
2857 psk_err = 0;
2858 psk_err:
2859 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
52b8dad8 2860 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
ddac1974
NL		 2861 if (psk_err != 0)
2862 {
2863 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2864 goto err;
2865 }
2866 }
2867#endif
f9b3bff6 2868 else
d02b48c6 2869 {
ea262260
BM		 2870 ssl3_send_alert(s, SSL3_AL_FATAL,
2871 SSL_AD_HANDSHAKE_FAILURE);
2872 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2873 ERR_R_INTERNAL_ERROR);
d02b48c6
RE		 2874 goto err;
2875 }
2876
2877 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2878 l2n3(n,d);
2879
2880 s->state=SSL3_ST_CW_KEY_EXCH_B;
2881 /* number of bytes to write */
2882 s->init_num=n+4;
2883 s->init_off=0;
2884 }
2885
2886 /* SSL3_ST_CW_KEY_EXCH_B */
2887 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2888err:
ea262260
BM		 2889#ifndef OPENSSL_NO_ECDH
2890 BN_CTX_free(bn_ctx);
2891 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2892 if (clnt_ecdh != NULL)
ea262260 2893 EC_KEY_free(clnt_ecdh);
57376542 2894 EVP_PKEY_free(srvr_pub_pkey);
ea262260 2895#endif
d02b48c6
RE		 2896 return(-1);
2897 }
2898
36d16f8e 2899int ssl3_send_client_verify(SSL *s)
d02b48c6
RE		 2900 {
2901 unsigned char *p,*d;
2902 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2903 EVP_PKEY *pkey;
0e1dba93 2904 EVP_PKEY_CTX *pctx=NULL;
855a54a9 2905 EVP_MD_CTX mctx;
ca7fea96 2906 unsigned u=0;
d02b48c6 2907 unsigned long n;
58964a49 2908 int j;
d02b48c6 2909
855a54a9
DSH		 2910 EVP_MD_CTX_init(&mctx);
2911
d02b48c6
RE		 2912 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2913 {
2914 d=(unsigned char *)s->init_buf->data;
2915 p= &(d[4]);
2916 pkey=s->cert->key->privatekey;
0e1dba93
DSH		 2917/* Create context from key and test if sha1 is allowed as digest */
2918 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2919 EVP_PKEY_sign_init(pctx);
2920 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2921 {
238b6361 2922 if (TLS1_get_version(s) < TLS1_2_VERSION)
855a54a9 2923 s->method->ssl3_enc->cert_verify_mac(s,
0e1dba93
DSH		 2924 NID_sha1,
2925 &(data[MD5_DIGEST_LENGTH]));
2926 }
2927 else
2928 {
2929 ERR_clear_error();
2930 }
855a54a9
DSH		 2931 /* For TLS v1.2 send signature algorithm and signature
2932 * using agreed digest and cached handshake records.
2933 */
238b6361 2934 if (TLS1_get_version(s) >= TLS1_2_VERSION)
855a54a9
DSH		 2935 {
2936 long hdatalen = 0;
2937 void *hdata;
2938 const EVP_MD *md = s->cert->key->digest;
2939 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2940 &hdata);
2941 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2942 {
2943 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2944 ERR_R_INTERNAL_ERROR);
2945 goto err;
2946 }
2947 p += 2;
2948#ifdef SSL_DEBUG
2949 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2950 EVP_MD_name(md));
2951#endif
2952 if (!EVP_SignInit_ex(&mctx, md, NULL)
2953 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2954 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2955 {
2956 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2957 ERR_R_EVP_LIB);
2958 goto err;
2959 }
2960 s2n(u,p);
2961 n = u + 4;
2962 if (!ssl3_digest_cached_records(s))
2963 goto err;
2964 }
2965 else
bc36ee62 2966#ifndef OPENSSL_NO_RSA
d02b48c6
RE		 2967 if (pkey->type == EVP_PKEY_RSA)
2968 {
58964a49 2969 s->method->ssl3_enc->cert_verify_mac(s,
81025661
DSH		 2970 NID_md5,
2971 &(data[0]));
1c80019a
DSH		 2972 if (RSA_sign(NID_md5_sha1, data,
2973 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
ca7fea96 2974 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
d02b48c6
RE		 2975 {
2976 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2977 goto err;
2978 }
ca7fea96
BL		 2979 s2n(u,p);
2980 n=u+2;
d02b48c6
RE		 2981 }
2982 else
2983#endif
bc36ee62 2984#ifndef OPENSSL_NO_DSA
d02b48c6
RE		 2985 if (pkey->type == EVP_PKEY_DSA)
2986 {
2987 if (!DSA_sign(pkey->save_type,
2988 &(data[MD5_DIGEST_LENGTH]),
2989 SHA_DIGEST_LENGTH,&(p[2]),
2990 (unsigned int *)&j,pkey->pkey.dsa))
2991 {
2992 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2993 goto err;
2994 }
2995 s2n(j,p);
2996 n=j+2;
2997 }
2998 else
ea262260
BM		 2999#endif
3000#ifndef OPENSSL_NO_ECDSA
5488bb61 3001 if (pkey->type == EVP_PKEY_EC)
ea262260
BM		 3002 {
3003 if (!ECDSA_sign(pkey->save_type,
3004 &(data[MD5_DIGEST_LENGTH]),
3005 SHA_DIGEST_LENGTH,&(p[2]),
9dd84053 3006 (unsigned int *)&j,pkey->pkey.ec))
ea262260
BM		 3007 {
3008 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3009 ERR_R_ECDSA_LIB);
3010 goto err;
3011 }
3012 s2n(j,p);
3013 n=j+2;
3014 }
3015 else
d02b48c6 3016#endif
0e1dba93
DSH		 3017 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3018 {
3019 unsigned char signbuf[64];
3020 int i;
9400d9ac 3021 size_t sigsize=64;
0e1dba93
DSH		 3022 s->method->ssl3_enc->cert_verify_mac(s,
3023 NID_id_GostR3411_94,
3024 data);
a25f33d2 3025 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
0e1dba93
DSH		 3026 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3027 ERR_R_INTERNAL_ERROR);
3028 goto err;
3029 }
3030 for (i=63,j=0; i>=0; j++, i--) {
3031 p[2+j]=signbuf[i];
3032 }
3033 s2n(j,p);
3034 n=j+2;
3035 }
3036 else
3037 {
5277d7cb 3038 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
d02b48c6 3039 goto err;
0e1dba93 3040 }
d02b48c6
RE		 3041 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3042 l2n3(n,d);
3043
ba9f80c5 3044 s->state=SSL3_ST_CW_CERT_VRFY_B;
d02b48c6
RE		 3045 s->init_num=(int)n+4;
3046 s->init_off=0;
3047 }
855a54a9 3048 EVP_MD_CTX_cleanup(&mctx);
0e1dba93 3049 EVP_PKEY_CTX_free(pctx);
d02b48c6
RE		 3050 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3051err:
855a54a9 3052 EVP_MD_CTX_cleanup(&mctx);
0e1dba93 3053 EVP_PKEY_CTX_free(pctx);
d02b48c6
RE		 3054 return(-1);
3055 }
3056
36d16f8e 3057int ssl3_send_client_certificate(SSL *s)
d02b48c6
RE		 3058 {
3059 X509 *x509=NULL;
3060 EVP_PKEY *pkey=NULL;
3061 int i;
3062 unsigned long l;
3063
3064 if (s->state == SSL3_ST_CW_CERT_A)
3065 {
3066 if ((s->cert == NULL) ||
3067 (s->cert->key->x509 == NULL) ||
3068 (s->cert->key->privatekey == NULL))
3069 s->state=SSL3_ST_CW_CERT_B;
3070 else
3071 s->state=SSL3_ST_CW_CERT_C;
3072 }
3073
3074 /* We need to get a client cert */
3075 if (s->state == SSL3_ST_CW_CERT_B)
3076 {
3077 /* If we get an error, we need to
3078 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3079 * We then get retied later */
3080 i=0;
368888bc 3081 i = ssl_do_client_cert_cb(s, &x509, &pkey);
d02b48c6
RE		 3082 if (i < 0)
3083 {
3084 s->rwstate=SSL_X509_LOOKUP;
3085 return(-1);
3086 }
3087 s->rwstate=SSL_NOTHING;
3088 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3089 {
3090 s->state=SSL3_ST_CW_CERT_B;
3091 if ( !SSL_use_certificate(s,x509) ||
3092 !SSL_use_PrivateKey(s,pkey))
3093 i=0;
3094 }
3095 else if (i == 1)
3096 {
3097 i=0;
3098 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3099 }
3100
3101 if (x509 != NULL) X509_free(x509);
3102 if (pkey != NULL) EVP_PKEY_free(pkey);
3103 if (i == 0)
3104 {
58964a49
RE		 3105 if (s->version == SSL3_VERSION)
3106 {
3107 s->s3->tmp.cert_req=0;
3108 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3109 return(1);
3110 }
3111 else
3112 {
3113 s->s3->tmp.cert_req=2;
3114 }
d02b48c6
RE		 3115 }
3116
3117 /* Ok, we have a cert */
3118 s->state=SSL3_ST_CW_CERT_C;
3119 }
3120
3121 if (s->state == SSL3_ST_CW_CERT_C)
3122 {
3123 s->state=SSL3_ST_CW_CERT_D;
58964a49
RE		 3124 l=ssl3_output_cert_chain(s,
3125 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
d02b48c6
RE		 3126 s->init_num=(int)l;
3127 s->init_off=0;
3128 }
3129 /* SSL3_ST_CW_CERT_D */
3130 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3131 }
3132
3133#define has_bits(i,m) (((i)&(m)) == (m))
3134
36d16f8e 3135int ssl3_check_cert_and_algorithm(SSL *s)
d02b48c6
RE		 3136 {
3137 int i,idx;
52b8dad8 3138 long alg_k,alg_a;
d02b48c6 3139 EVP_PKEY *pkey=NULL;
b56bce4f 3140 SESS_CERT *sc;
bc36ee62 3141#ifndef OPENSSL_NO_RSA
d02b48c6 3142 RSA *rsa;
79df9d62 3143#endif
bc36ee62 3144#ifndef OPENSSL_NO_DH
d02b48c6 3145 DH *dh;
79df9d62 3146#endif
d02b48c6 3147
52b8dad8
BM		 3148 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3149 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
d02b48c6
RE		 3150
3151 /* we don't have a certificate */
8e1dc4d7 3152 if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
d02b48c6
RE		 3153 return(1);
3154
c1ca9d32
DSH		 3155 sc=s->session->sess_cert;
3156 if (sc == NULL)
3157 {
3158 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3159 goto err;
3160 }
3161
bc36ee62 3162#ifndef OPENSSL_NO_RSA
b56bce4f 3163 rsa=s->session->sess_cert->peer_rsa_tmp;
79df9d62 3164#endif
bc36ee62 3165#ifndef OPENSSL_NO_DH
b56bce4f 3166 dh=s->session->sess_cert->peer_dh_tmp;
79df9d62 3167#endif
d02b48c6
RE		 3168
3169 /* This is the passed certificate */
3170
b56bce4f 3171 idx=sc->peer_cert_type;
ea262260
BM		 3172#ifndef OPENSSL_NO_ECDH
3173 if (idx == SSL_PKEY_ECC)
3174 {
ed3ecd80 3175 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
a2f9200f 3176 s) == 0)
ea262260
BM		 3177 { /* check failed */
3178 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
52b8dad8 3179 goto f_err;
ea262260
BM		 3180 }
3181 else
3182 {
3183 return 1;
3184 }
3185 }
3186#endif
b56bce4f
BM		 3187 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3188 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
a8236c8c 3189 EVP_PKEY_free(pkey);
d02b48c6
RE		 3190
3191
3192 /* Check that we have a certificate if we require one */
52b8dad8 3193 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
d02b48c6
RE		 3194 {
3195 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3196 goto f_err;
3197 }
bc36ee62 3198#ifndef OPENSSL_NO_DSA
52b8dad8 3199 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
d02b48c6
RE		 3200 {
3201 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3202 goto f_err;
3203 }
3204#endif
bc36ee62 3205#ifndef OPENSSL_NO_RSA
52b8dad8 3206 if ((alg_k & SSL_kRSA) &&
d02b48c6
RE		 3207 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3208 {
3209 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3210 goto f_err;
3211 }
79df9d62 3212#endif
bc36ee62 3213#ifndef OPENSSL_NO_DH
8e1dc4d7 3214 if ((alg_k & SSL_kEDH) &&
d02b48c6
RE		 3215 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3216 {
3217 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3218 goto f_err;
3219 }
8e1dc4d7
DSH		 3220 else if ((alg_k & SSL_kDHr) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3221 !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
d02b48c6
RE		 3222 {
3223 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3224 goto f_err;
3225 }
bc36ee62 3226#ifndef OPENSSL_NO_DSA
8e1dc4d7
DSH		 3227 else if ((alg_k & SSL_kDHd) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3228 !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
d02b48c6
RE		 3229 {
3230 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3231 goto f_err;
3232 }
3233#endif
3234#endif
3235
018e57c7 3236 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
d02b48c6 3237 {
bc36ee62 3238#ifndef OPENSSL_NO_RSA
52b8dad8 3239 if (alg_k & SSL_kRSA)
d02b48c6 3240 {
06ab81f9 3241 if (rsa == NULL
70ef9c5a 3242 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
d02b48c6
RE		 3243 {
3244 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3245 goto f_err;
3246 }
3247 }
3248 else
3249#endif
bc36ee62 3250#ifndef OPENSSL_NO_DH
52b8dad8 3251 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
06ab81f9
BL		 3252 {
3253 if (dh == NULL
70ef9c5a 3254 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
d02b48c6
RE		 3255 {
3256 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3257 goto f_err;
3258 }
3259 }
3260 else
3261#endif
3262 {
3263 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3264 goto f_err;
3265 }
3266 }
3267 return(1);
3268f_err:
58964a49 3269 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
d02b48c6
RE		 3270err:
3271 return(0);
3272 }
6434abbf
DSH		 3273
3274/* Check to see if handshake is full or resumed. Usually this is just a
3275 * case of checking to see if a cache hit has occurred. In the case of
3276 * session tickets we have to check the next message to be sure.
3277 */
3278
3279#ifndef OPENSSL_NO_TLSEXT
bf48836c 3280# ifndef OPENSSL_NO_NEXTPROTONEG
ee2ffc27
BL		 3281int ssl3_send_next_proto(SSL *s)
3282 {
3283 unsigned int len, padding_len;
3284 unsigned char *d;
3285
3286 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3287 {
3288 len = s->next_proto_negotiated_len;
3289 padding_len = 32 - ((len + 2) % 32);
3290 d = (unsigned char *)s->init_buf->data;
3291 d[4] = len;
3292 memcpy(d + 5, s->next_proto_negotiated, len);
3293 d[5 + len] = padding_len;
3294 memset(d + 6 + len, 0, padding_len);
3295 *(d++)=SSL3_MT_NEXT_PROTO;
3296 l2n3(2 + len + padding_len, d);
3297 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3298 s->init_num = 4 + 2 + len + padding_len;
3299 s->init_off = 0;
3300 }
3301
3302 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3303 }
3304# endif
3305
8025e251 3306int ssl3_check_finished(SSL *s)
6434abbf
DSH		 3307 {
3308 int ok;
3309 long n;
12bf56c0
DSH		 3310 /* If we have no ticket it cannot be a resumed session. */
3311 if (!s->session->tlsext_tick)
6434abbf
DSH		 3312 return 1;
3313 /* this function is called when we really expect a Certificate
3314 * message, so permit appropriate message length */
3315 n=s->method->ssl_get_message(s,
3316 SSL3_ST_CR_CERT_A,
3317 SSL3_ST_CR_CERT_B,
3318 -1,
3319 s->max_cert_list,
3320 &ok);
3321 if (!ok) return((int)n);
3322 s->s3->tmp.reuse_message = 1;
3323 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3324 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3325 return 2;
3326
3327 return 1;
3328 }
3329#endif
368888bc
DSH		 3330
3331int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3332 {
3333 int i = 0;
3334#ifndef OPENSSL_NO_ENGINE
3335 if (s->ctx->client_cert_engine)
3336 {
3337 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3338 SSL_get_client_CA_list(s),
3fc59c84 3339 px509, ppkey, NULL, NULL, NULL);
368888bc
DSH		 3340 if (i != 0)
3341 return i;
3342 }
3343#endif
3344 if (s->ctx->client_cert_cb)
3345 i = s->ctx->client_cert_cb(s,px509,ppkey);
3346 return i;
3347 }
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