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Issue 9254031: Upgrade chrome's OpenSSL to same version Android ships with. (Closed) Base URL: http://src.chromium.org/svn/trunk/deps/third_party/openssl/
Patch Set: '' Created 8 years, 11 months ago
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1 /* ssl/s3_clnt.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 *
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
116 *
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
119 *
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
122 *
123 */
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
126 *
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
129 * license.
130 *
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
134 *
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
138 *
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
143 *
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
148 * OTHERWISE.
149 */
150
151 #include <stdio.h>
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
161 #endif
162 #include <openssl/bn.h>
163 #ifndef OPENSSL_NO_ENGINE
164 #include <openssl/engine.h>
165 #endif
166
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
169
170 static const SSL_METHOD *ssl3_get_client_method(int ver)
171 {
172 if (ver == SSL3_VERSION)
173 return(SSLv3_client_method());
174 else
175 return(NULL);
176 }
177
178 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
179 ssl_undefined_function,
180 ssl3_connect,
181 ssl3_get_client_method)
182
183 int ssl3_connect(SSL *s)
184 {
185 BUF_MEM *buf=NULL;
186 unsigned long Time=(unsigned long)time(NULL);
187 void (*cb)(const SSL *ssl,int type,int val)=NULL;
188 int ret= -1;
189 int new_state,state,skip=0;
190
191 RAND_add(&Time,sizeof(Time),0);
192 ERR_clear_error();
193 clear_sys_error();
194
195 if (s->info_callback != NULL)
196 cb=s->info_callback;
197 else if (s->ctx->info_callback != NULL)
198 cb=s->ctx->info_callback;
199
200 s->in_handshake++;
201 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
202 #if 0 /* Send app data in separate packet, otherwise, some particular site
203 * (only one site so far) closes the socket.
204 * Note: there is a very small chance that two TCP packets
205 * could be arriving at server combined into a single TCP packet,
206 * then trigger that site to break. We haven't encounter that though.
207 */
208 if (SSL_get_mode(s) & SSL_MODE_HANDSHAKE_CUTTHROUGH)
209 {
210 /* Send app data along with CCS/Finished */
211 s->s3->flags |= SSL3_FLAGS_DELAY_CLIENT_FINISHED;
212 }
213 #endif
214
215 for (;;)
216 {
217 state=s->state;
218
219 switch(s->state)
220 {
221 case SSL_ST_RENEGOTIATE:
222 s->new_session=1;
223 s->state=SSL_ST_CONNECT;
224 s->ctx->stats.sess_connect_renegotiate++;
225 /* break */
226 case SSL_ST_BEFORE:
227 case SSL_ST_CONNECT:
228 case SSL_ST_BEFORE|SSL_ST_CONNECT:
229 case SSL_ST_OK|SSL_ST_CONNECT:
230
231 s->server=0;
232 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
233
234 if ((s->version & 0xff00 ) != 0x0300)
235 {
236 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR) ;
237 ret = -1;
238 goto end;
239 }
240
241 /* s->version=SSL3_VERSION; */
242 s->type=SSL_ST_CONNECT;
243
244 if (s->init_buf == NULL)
245 {
246 if ((buf=BUF_MEM_new()) == NULL)
247 {
248 ret= -1;
249 goto end;
250 }
251 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
252 {
253 ret= -1;
254 goto end;
255 }
256 s->init_buf=buf;
257 buf=NULL;
258 }
259
260 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
261
262 /* setup buffing BIO */
263 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
264
265 /* don't push the buffering BIO quite yet */
266
267 ssl3_init_finished_mac(s);
268
269 s->state=SSL3_ST_CW_CLNT_HELLO_A;
270 s->ctx->stats.sess_connect++;
271 s->init_num=0;
272 break;
273
274 case SSL3_ST_CW_CLNT_HELLO_A:
275 case SSL3_ST_CW_CLNT_HELLO_B:
276
277 s->shutdown=0;
278 ret=ssl3_client_hello(s);
279 if (ret <= 0) goto end;
280 s->state=SSL3_ST_CR_SRVR_HELLO_A;
281 s->init_num=0;
282
283 /* turn on buffering for the next lot of output */
284 if (s->bbio != s->wbio)
285 s->wbio=BIO_push(s->bbio,s->wbio);
286
287 break;
288
289 case SSL3_ST_CR_SRVR_HELLO_A:
290 case SSL3_ST_CR_SRVR_HELLO_B:
291 ret=ssl3_get_server_hello(s);
292 if (ret <= 0) goto end;
293
294 if (s->hit)
295 s->state=SSL3_ST_CR_FINISHED_A;
296 else
297 s->state=SSL3_ST_CR_CERT_A;
298 s->init_num=0;
299 break;
300
301 case SSL3_ST_CR_CERT_A:
302 case SSL3_ST_CR_CERT_B:
303 #ifndef OPENSSL_NO_TLSEXT
304 ret=ssl3_check_finished(s);
305 if (ret <= 0) goto end;
306 if (ret == 2)
307 {
308 s->hit = 1;
309 if (s->tlsext_ticket_expected)
310 s->state=SSL3_ST_CR_SESSION_TICKET_A;
311 else
312 s->state=SSL3_ST_CR_FINISHED_A;
313 s->init_num=0;
314 break;
315 }
316 #endif
317 /* Check if it is anon DH/ECDH */
318 /* or PSK */
319 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
320 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
321 {
322 ret=ssl3_get_server_certificate(s);
323 if (ret <= 0) goto end;
324 #ifndef OPENSSL_NO_TLSEXT
325 if (s->tlsext_status_expected)
326 s->state=SSL3_ST_CR_CERT_STATUS_A;
327 else
328 s->state=SSL3_ST_CR_KEY_EXCH_A;
329 }
330 else
331 {
332 skip = 1;
333 s->state=SSL3_ST_CR_KEY_EXCH_A;
334 }
335 #else
336 }
337 else
338 skip=1;
339
340 s->state=SSL3_ST_CR_KEY_EXCH_A;
341 #endif
342 s->init_num=0;
343 break;
344
345 case SSL3_ST_CR_KEY_EXCH_A:
346 case SSL3_ST_CR_KEY_EXCH_B:
347 ret=ssl3_get_key_exchange(s);
348 if (ret <= 0) goto end;
349 s->state=SSL3_ST_CR_CERT_REQ_A;
350 s->init_num=0;
351
352 /* at this point we check that we have the
353 * required stuff from the server */
354 if (!ssl3_check_cert_and_algorithm(s))
355 {
356 ret= -1;
357 goto end;
358 }
359 break;
360
361 case SSL3_ST_CR_CERT_REQ_A:
362 case SSL3_ST_CR_CERT_REQ_B:
363 ret=ssl3_get_certificate_request(s);
364 if (ret <= 0) goto end;
365 s->state=SSL3_ST_CR_SRVR_DONE_A;
366 s->init_num=0;
367 break;
368
369 case SSL3_ST_CR_SRVR_DONE_A:
370 case SSL3_ST_CR_SRVR_DONE_B:
371 ret=ssl3_get_server_done(s);
372 if (ret <= 0) goto end;
373 if (s->s3->tmp.cert_req)
374 s->state=SSL3_ST_CW_CERT_A;
375 else
376 s->state=SSL3_ST_CW_KEY_EXCH_A;
377 s->init_num=0;
378
379 break;
380
381 case SSL3_ST_CW_CERT_A:
382 case SSL3_ST_CW_CERT_B:
383 case SSL3_ST_CW_CERT_C:
384 case SSL3_ST_CW_CERT_D:
385 ret=ssl3_send_client_certificate(s);
386 if (ret <= 0) goto end;
387 s->state=SSL3_ST_CW_KEY_EXCH_A;
388 s->init_num=0;
389 break;
390
391 case SSL3_ST_CW_KEY_EXCH_A:
392 case SSL3_ST_CW_KEY_EXCH_B:
393 ret=ssl3_send_client_key_exchange(s);
394 if (ret <= 0) goto end;
395 /* EAY EAY EAY need to check for DH fix cert
396 * sent back */
397 /* For TLS, cert_req is set to 2, so a cert chain
398 * of nothing is sent, but no verify packet is sent */
399 /* XXX: For now, we do not support client
400 * authentication in ECDH cipher suites with
401 * ECDH (rather than ECDSA) certificates.
402 * We need to skip the certificate verify
403 * message when client's ECDH public key is sent
404 * inside the client certificate.
405 */
406 if (s->s3->tmp.cert_req == 1)
407 {
408 s->state=SSL3_ST_CW_CERT_VRFY_A;
409 }
410 else
411 {
412 s->state=SSL3_ST_CW_CHANGE_A;
413 s->s3->change_cipher_spec=0;
414 }
415 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
416 {
417 s->state=SSL3_ST_CW_CHANGE_A;
418 s->s3->change_cipher_spec=0;
419 }
420
421 s->init_num=0;
422 break;
423
424 case SSL3_ST_CW_CERT_VRFY_A:
425 case SSL3_ST_CW_CERT_VRFY_B:
426 ret=ssl3_send_client_verify(s);
427 if (ret <= 0) goto end;
428 s->state=SSL3_ST_CW_CHANGE_A;
429 s->init_num=0;
430 s->s3->change_cipher_spec=0;
431 break;
432
433 case SSL3_ST_CW_CHANGE_A:
434 case SSL3_ST_CW_CHANGE_B:
435 ret=ssl3_send_change_cipher_spec(s,
436 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
437 if (ret <= 0) goto end;
438 s->state=SSL3_ST_CW_FINISHED_A;
439 s->init_num=0;
440
441 s->session->cipher=s->s3->tmp.new_cipher;
442 #ifdef OPENSSL_NO_COMP
443 s->session->compress_meth=0;
444 #else
445 if (s->s3->tmp.new_compression == NULL)
446 s->session->compress_meth=0;
447 else
448 s->session->compress_meth=
449 s->s3->tmp.new_compression->id;
450 #endif
451 if (!s->method->ssl3_enc->setup_key_block(s))
452 {
453 ret= -1;
454 goto end;
455 }
456
457 if (!s->method->ssl3_enc->change_cipher_state(s,
458 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
459 {
460 ret= -1;
461 goto end;
462 }
463
464 break;
465
466 case SSL3_ST_CW_FINISHED_A:
467 case SSL3_ST_CW_FINISHED_B:
468 ret=ssl3_send_finished(s,
469 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
470 s->method->ssl3_enc->client_finished_label,
471 s->method->ssl3_enc->client_finished_label_len);
472 if (ret <= 0) goto end;
473 s->state=SSL3_ST_CW_FLUSH;
474
475 /* clear flags */
476 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
477 if (s->hit)
478 {
479 s->s3->tmp.next_state=SSL_ST_OK;
480 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINIS HED)
481 {
482 s->state=SSL_ST_OK;
483 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
484 s->s3->delay_buf_pop_ret=0;
485 }
486 }
487 else
488 {
489 if ((SSL_get_mode(s) & SSL_MODE_HANDSHAKE_CUTTHR OUGH) && SSL_get_cipher_bits(s, NULL) >= 128
490 && s->s3->previous_server_finished_len == 0 /* no cutthrough on renegotiation (would complicate the state machine) */
491 )
492 {
493 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIE NT_FINISHED)
494 {
495 s->state=SSL3_ST_CUTTHROUGH_COMP LETE;
496 s->s3->flags|=SSL3_FLAGS_POP_BUF FER;
497 s->s3->delay_buf_pop_ret=0;
498 }
499 else
500 {
501 s->s3->tmp.next_state=SSL3_ST_CU TTHROUGH_COMPLETE;
502 }
503 }
504 else
505 {
506 #ifndef OPENSSL_NO_TLSEXT
507 /* Allow NewSessionTicket if ticket expe cted */
508 if (s->tlsext_ticket_expected)
509 s->s3->tmp.next_state=SSL3_ST_CR _SESSION_TICKET_A;
510 else
511 #endif
512 s->s3->tmp.next_state=SSL3_ST_CR _FINISHED_A;
513 }
514 }
515 s->init_num=0;
516 break;
517
518 #ifndef OPENSSL_NO_TLSEXT
519 case SSL3_ST_CR_SESSION_TICKET_A:
520 case SSL3_ST_CR_SESSION_TICKET_B:
521 ret=ssl3_get_new_session_ticket(s);
522 if (ret <= 0) goto end;
523 s->state=SSL3_ST_CR_FINISHED_A;
524 s->init_num=0;
525 break;
526
527 case SSL3_ST_CR_CERT_STATUS_A:
528 case SSL3_ST_CR_CERT_STATUS_B:
529 ret=ssl3_get_cert_status(s);
530 if (ret <= 0) goto end;
531 s->state=SSL3_ST_CR_KEY_EXCH_A;
532 s->init_num=0;
533 break;
534 #endif
535
536 case SSL3_ST_CR_FINISHED_A:
537 case SSL3_ST_CR_FINISHED_B:
538
539 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
540 SSL3_ST_CR_FINISHED_B);
541 if (ret <= 0) goto end;
542
543 if (s->hit)
544 s->state=SSL3_ST_CW_CHANGE_A;
545 else
546 s->state=SSL_ST_OK;
547 s->init_num=0;
548 break;
549
550 case SSL3_ST_CW_FLUSH:
551 s->rwstate=SSL_WRITING;
552 if (BIO_flush(s->wbio) <= 0)
553 {
554 ret= -1;
555 goto end;
556 }
557 s->rwstate=SSL_NOTHING;
558 s->state=s->s3->tmp.next_state;
559 break;
560
561 case SSL3_ST_CUTTHROUGH_COMPLETE:
562 #ifndef OPENSSL_NO_TLSEXT
563 /* Allow NewSessionTicket if ticket expected */
564 if (s->tlsext_ticket_expected)
565 s->state=SSL3_ST_CR_SESSION_TICKET_A;
566 else
567 #endif
568 s->state=SSL3_ST_CR_FINISHED_A;
569
570 /* SSL_write() will take care of flushing buffered data if
571 * DELAY_CLIENT_FINISHED is set.
572 */
573 if (!(s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED))
574 ssl_free_wbio_buffer(s);
575 ret = 1;
576 goto end;
577 /* break; */
578
579 case SSL_ST_OK:
580 /* clean a few things up */
581 ssl3_cleanup_key_block(s);
582
583 if (s->init_buf != NULL)
584 {
585 BUF_MEM_free(s->init_buf);
586 s->init_buf=NULL;
587 }
588
589 /* If we are not 'joining' the last two packets,
590 * remove the buffering now */
591 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
592 ssl_free_wbio_buffer(s);
593 /* else do it later in ssl3_write */
594
595 s->init_num=0;
596 s->new_session=0;
597
598 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
599 if (s->hit) s->ctx->stats.sess_hit++;
600
601 ret=1;
602 /* s->server=0; */
603 s->handshake_func=ssl3_connect;
604 s->ctx->stats.sess_connect_good++;
605
606 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
607
608 goto end;
609 /* break; */
610
611 default:
612 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
613 ret= -1;
614 goto end;
615 /* break; */
616 }
617
618 /* did we do anything */
619 if (!s->s3->tmp.reuse_message && !skip)
620 {
621 if (s->debug)
622 {
623 if ((ret=BIO_flush(s->wbio)) <= 0)
624 goto end;
625 }
626
627 if ((cb != NULL) && (s->state != state))
628 {
629 new_state=s->state;
630 s->state=state;
631 cb(s,SSL_CB_CONNECT_LOOP,1);
632 s->state=new_state;
633 }
634 }
635 skip=0;
636 }
637 end:
638 s->in_handshake--;
639 if (buf != NULL)
640 BUF_MEM_free(buf);
641 if (cb != NULL)
642 cb(s,SSL_CB_CONNECT_EXIT,ret);
643 return(ret);
644 }
645
646
647 int ssl3_client_hello(SSL *s)
648 {
649 unsigned char *buf;
650 unsigned char *p,*d;
651 int i;
652 unsigned long Time,l;
653 #ifndef OPENSSL_NO_COMP
654 int j;
655 SSL_COMP *comp;
656 #endif
657
658 buf=(unsigned char *)s->init_buf->data;
659 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
660 {
661 SSL_SESSION *sess = s->session;
662 if ((sess == NULL) ||
663 (sess->ssl_version != s->version) ||
664 #ifdef OPENSSL_NO_TLSEXT
665 !sess->session_id_length ||
666 #else
667 (!sess->session_id_length && !sess->tlsext_tick) ||
668 #endif
669 (sess->not_resumable))
670 {
671 if (!s->session_creation_enabled)
672 {
673 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE _FAILURE);
674 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_SESSION_MAY _NOT_BE_CREATED);
675 goto err;
676 }
677 if (!ssl_get_new_session(s,0))
678 goto err;
679 }
680 /* else use the pre-loaded session */
681
682 p=s->s3->client_random;
683 Time=(unsigned long)time(NULL); /* Time */
684 l2n(Time,p);
685 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
686 goto err;
687
688 /* Do the message type and length last */
689 d=p= &(buf[4]);
690
691 *(p++)=s->version>>8;
692 *(p++)=s->version&0xff;
693 s->client_version=s->version;
694
695 /* Random stuff */
696 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
697 p+=SSL3_RANDOM_SIZE;
698
699 /* Session ID */
700 if (s->new_session)
701 i=0;
702 else
703 i=s->session->session_id_length;
704 *(p++)=i;
705 if (i != 0)
706 {
707 if (i > (int)sizeof(s->session->session_id))
708 {
709 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_E RROR);
710 goto err;
711 }
712 memcpy(p,s->session->session_id,i);
713 p+=i;
714 }
715
716 /* Ciphers supported */
717 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
718 if (i == 0)
719 {
720 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABL E);
721 goto err;
722 }
723 s2n(i,p);
724 p+=i;
725
726 /* COMPRESSION */
727 #ifdef OPENSSL_NO_COMP
728 *(p++)=1;
729 #else
730
731 if ((s->options & SSL_OP_NO_COMPRESSION)
732 || !s->ctx->comp_methods)
733 j=0;
734 else
735 j=sk_SSL_COMP_num(s->ctx->comp_methods);
736 *(p++)=1+j;
737 for (i=0; i<j; i++)
738 {
739 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
740 *(p++)=comp->id;
741 }
742 #endif
743 *(p++)=0; /* Add the NULL method */
744
745 #ifndef OPENSSL_NO_TLSEXT
746 /* TLS extensions*/
747 if (ssl_prepare_clienthello_tlsext(s) <= 0)
748 {
749 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT) ;
750 goto err;
751 }
752 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_ LENGTH)) == NULL)
753 {
754 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
755 goto err;
756 }
757 #endif
758
759 l=(p-d);
760 d=buf;
761 *(d++)=SSL3_MT_CLIENT_HELLO;
762 l2n3(l,d);
763
764 s->state=SSL3_ST_CW_CLNT_HELLO_B;
765 /* number of bytes to write */
766 s->init_num=p-buf;
767 s->init_off=0;
768 }
769
770 /* SSL3_ST_CW_CLNT_HELLO_B */
771 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
772 err:
773 return(-1);
774 }
775
776 int ssl3_get_server_hello(SSL *s)
777 {
778 STACK_OF(SSL_CIPHER) *sk;
779 const SSL_CIPHER *c;
780 unsigned char *p,*d;
781 int i,al,ok;
782 unsigned int j;
783 long n;
784 #ifndef OPENSSL_NO_COMP
785 SSL_COMP *comp;
786 #endif
787
788 n=s->method->ssl_get_message(s,
789 SSL3_ST_CR_SRVR_HELLO_A,
790 SSL3_ST_CR_SRVR_HELLO_B,
791 -1,
792 20000, /* ?? */
793 &ok);
794
795 if (!ok) return((int)n);
796
797 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
798 {
799 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
800 {
801 if ( s->d1->send_cookie == 0)
802 {
803 s->s3->tmp.reuse_message = 1;
804 return 1;
805 }
806 else /* already sent a cookie */
807 {
808 al=SSL_AD_UNEXPECTED_MESSAGE;
809 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MES SAGE_TYPE);
810 goto f_err;
811 }
812 }
813 }
814
815 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
816 {
817 al=SSL_AD_UNEXPECTED_MESSAGE;
818 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
819 goto f_err;
820 }
821
822 d=p=(unsigned char *)s->init_msg;
823
824 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
825 {
826 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
827 s->version=(s->version&0xff00)|p[1];
828 al=SSL_AD_PROTOCOL_VERSION;
829 goto f_err;
830 }
831 p+=2;
832
833 /* load the server hello data */
834 /* load the server random */
835 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
836 p+=SSL3_RANDOM_SIZE;
837
838 /* get the session-id */
839 j= *(p++);
840
841 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
842 {
843 al=SSL_AD_ILLEGAL_PARAMETER;
844 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LON G);
845 goto f_err;
846 }
847
848 #ifndef OPENSSL_NO_TLSEXT
849 /* check if we want to resume the session based on external pre-shared s ecret */
850 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
851 {
852 SSL_CIPHER *pref_cipher=NULL;
853 s->session->master_key_length=sizeof(s->session->master_key);
854 if (s->tls_session_secret_cb(s, s->session->master_key,
855 &s->session->master_key_length,
856 NULL, &pref_cipher,
857 s->tls_session_secret_cb_arg))
858 {
859 s->session->cipher = pref_cipher ?
860 pref_cipher : ssl_get_cipher_by_char(s, p+j);
861 }
862 }
863 #endif /* OPENSSL_NO_TLSEXT */
864
865 if (j != 0 && j == s->session->session_id_length
866 && memcmp(p,s->session->session_id,j) == 0)
867 {
868 if(s->sid_ctx_length != s->session->sid_ctx_length
869 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
870 {
871 /* actually a client application bug */
872 al=SSL_AD_ILLEGAL_PARAMETER;
873 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSIO N_IN_DIFFERENT_CONTEXT);
874 goto f_err;
875 }
876 s->hit=1;
877 }
878 else /* a miss or crap from the other end */
879 {
880 /* If we were trying for session-id reuse, make a new
881 * SSL_SESSION so we don't stuff up other people */
882 s->hit=0;
883 if (s->session->session_id_length > 0)
884 {
885 if (!s->session_creation_enabled)
886 {
887 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE _FAILURE);
888 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SESSION _MAY_NOT_BE_CREATED);
889 goto err;
890 }
891 if (!ssl_get_new_session(s,0))
892 {
893 al=SSL_AD_INTERNAL_ERROR;
894 goto f_err;
895 }
896 }
897 s->session->session_id_length=j;
898 memcpy(s->session->session_id,p,j); /* j could be 0 */
899 }
900 p+=j;
901 c=ssl_get_cipher_by_char(s,p);
902 if (c == NULL)
903 {
904 /* unknown cipher */
905 al=SSL_AD_ILLEGAL_PARAMETER;
906 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED );
907 goto f_err;
908 }
909 p+=ssl_put_cipher_by_char(s,NULL,NULL);
910
911 sk=ssl_get_ciphers_by_id(s);
912 i=sk_SSL_CIPHER_find(sk,c);
913 if (i < 0)
914 {
915 /* we did not say we would use this cipher */
916 al=SSL_AD_ILLEGAL_PARAMETER;
917 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
918 goto f_err;
919 }
920
921 /* Depending on the session caching (internal/external), the cipher
922 and/or cipher_id values may not be set. Make sure that
923 cipher_id is set and use it for comparison. */
924 if (s->session->cipher)
925 s->session->cipher_id = s->session->cipher->id;
926 if (s->hit && (s->session->cipher_id != c->id))
927 {
928 /* Workaround is now obsolete */
929 #if 0
930 if (!(s->options &
931 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
932 #endif
933 {
934 al=SSL_AD_ILLEGAL_PARAMETER;
935 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIP HER_NOT_RETURNED);
936 goto f_err;
937 }
938 }
939 s->s3->tmp.new_cipher=c;
940 if (!ssl3_digest_cached_records(s))
941 goto f_err;
942
943 /* lets get the compression algorithm */
944 /* COMPRESSION */
945 #ifdef OPENSSL_NO_COMP
946 if (*(p++) != 0)
947 {
948 al=SSL_AD_ILLEGAL_PARAMETER;
949 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION _ALGORITHM);
950 goto f_err;
951 }
952 /* If compression is disabled we'd better not try to resume a session
953 * using compression.
954 */
955 if (s->session->compress_meth != 0)
956 {
957 al=SSL_AD_INTERNAL_ERROR;
958 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSIO N);
959 goto f_err;
960 }
961 #else
962 j= *(p++);
963 if (s->hit && j != s->session->compress_meth)
964 {
965 al=SSL_AD_ILLEGAL_PARAMETER;
966 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION _ALGORITHM_NOT_RETURNED);
967 goto f_err;
968 }
969 if (j == 0)
970 comp=NULL;
971 else if (s->options & SSL_OP_NO_COMPRESSION)
972 {
973 al=SSL_AD_ILLEGAL_PARAMETER;
974 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
975 goto f_err;
976 }
977 else
978 comp=ssl3_comp_find(s->ctx->comp_methods,j);
979
980 if ((j != 0) && (comp == NULL))
981 {
982 al=SSL_AD_ILLEGAL_PARAMETER;
983 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION _ALGORITHM);
984 goto f_err;
985 }
986 else
987 {
988 s->s3->tmp.new_compression=comp;
989 }
990 #endif
991
992 #ifndef OPENSSL_NO_TLSEXT
993 /* TLS extensions*/
994 if (s->version >= SSL3_VERSION)
995 {
996 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
997 {
998 /* 'al' set by ssl_parse_serverhello_tlsext */
999 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1000 goto f_err;
1001 }
1002 if (ssl_check_serverhello_tlsext(s) <= 0)
1003 {
1004 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLS EXT);
1005 goto err;
1006 }
1007 }
1008 #endif
1009
1010 if (p != (d+n))
1011 {
1012 /* wrong packet length */
1013 al=SSL_AD_DECODE_ERROR;
1014 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1015 goto f_err;
1016 }
1017
1018 return(1);
1019 f_err:
1020 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1021 err:
1022 return(-1);
1023 }
1024
1025 int ssl3_get_server_certificate(SSL *s)
1026 {
1027 int al,i,ok,ret= -1;
1028 unsigned long n,nc,llen,l;
1029 X509 *x=NULL;
1030 const unsigned char *q,*p;
1031 unsigned char *d;
1032 STACK_OF(X509) *sk=NULL;
1033 SESS_CERT *sc;
1034 EVP_PKEY *pkey=NULL;
1035 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1036
1037 n=s->method->ssl_get_message(s,
1038 SSL3_ST_CR_CERT_A,
1039 SSL3_ST_CR_CERT_B,
1040 -1,
1041 s->max_cert_list,
1042 &ok);
1043
1044 if (!ok) return((int)n);
1045
1046 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1047 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1048 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1049 {
1050 s->s3->tmp.reuse_message=1;
1051 return(1);
1052 }
1053
1054 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1055 {
1056 al=SSL_AD_UNEXPECTED_MESSAGE;
1057 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE) ;
1058 goto f_err;
1059 }
1060 p=d=(unsigned char *)s->init_msg;
1061
1062 if ((sk=sk_X509_new_null()) == NULL)
1063 {
1064 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1065 goto err;
1066 }
1067
1068 n2l3(p,llen);
1069 if (llen+3 != n)
1070 {
1071 al=SSL_AD_DECODE_ERROR;
1072 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1073 goto f_err;
1074 }
1075 for (nc=0; nc<llen; )
1076 {
1077 n2l3(p,l);
1078 if ((l+nc+3) > llen)
1079 {
1080 al=SSL_AD_DECODE_ERROR;
1081 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENG TH_MISMATCH);
1082 goto f_err;
1083 }
1084
1085 q=p;
1086 x=d2i_X509(NULL,&q,l);
1087 if (x == NULL)
1088 {
1089 al=SSL_AD_BAD_CERTIFICATE;
1090 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB) ;
1091 goto f_err;
1092 }
1093 if (q != (p+l))
1094 {
1095 al=SSL_AD_DECODE_ERROR;
1096 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENG TH_MISMATCH);
1097 goto f_err;
1098 }
1099 if (!sk_X509_push(sk,x))
1100 {
1101 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FA ILURE);
1102 goto err;
1103 }
1104 x=NULL;
1105 nc+=l+3;
1106 p=q;
1107 }
1108
1109 i=ssl_verify_cert_chain(s,sk);
1110 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1111 #ifndef OPENSSL_NO_KRB5
1112 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1113 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1114 #endif /* OPENSSL_NO_KRB5 */
1115 )
1116 {
1117 al=ssl_verify_alarm_type(s->verify_result);
1118 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIF Y_FAILED);
1119 goto f_err;
1120 }
1121 ERR_clear_error(); /* but we keep s->verify_result */
1122
1123 sc=ssl_sess_cert_new();
1124 if (sc == NULL) goto err;
1125
1126 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1127 s->session->sess_cert=sc;
1128
1129 sc->cert_chain=sk;
1130 /* Inconsistency alert: cert_chain does include the peer's
1131 * certificate, which we don't include in s3_srvr.c */
1132 x=sk_X509_value(sk,0);
1133 sk=NULL;
1134 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1135
1136 pkey=X509_get_pubkey(x);
1137
1138 /* VRS: allow null cert if auth == KRB5 */
1139 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1140 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1141 ? 0 : 1;
1142
1143 #ifdef KSSL_DEBUG
1144 printf("pkey,x = %p, %p\n", pkey,x);
1145 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1146 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->na me,
1147 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->al gorithm_auth, need_cert);
1148 #endif /* KSSL_DEBUG */
1149
1150 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1151 {
1152 x=NULL;
1153 al=SSL3_AL_FATAL;
1154 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1155 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1156 goto f_err;
1157 }
1158
1159 i=ssl_cert_type(x,pkey);
1160 if (need_cert && i < 0)
1161 {
1162 x=NULL;
1163 al=SSL3_AL_FATAL;
1164 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1165 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1166 goto f_err;
1167 }
1168
1169 if (need_cert)
1170 {
1171 sc->peer_cert_type=i;
1172 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1173 /* Why would the following ever happen?
1174 * We just created sc a couple of lines ago. */
1175 if (sc->peer_pkeys[i].x509 != NULL)
1176 X509_free(sc->peer_pkeys[i].x509);
1177 sc->peer_pkeys[i].x509=x;
1178 sc->peer_key= &(sc->peer_pkeys[i]);
1179
1180 if (s->session->peer != NULL)
1181 X509_free(s->session->peer);
1182 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1183 s->session->peer=x;
1184 }
1185 else
1186 {
1187 sc->peer_cert_type=i;
1188 sc->peer_key= NULL;
1189
1190 if (s->session->peer != NULL)
1191 X509_free(s->session->peer);
1192 s->session->peer=NULL;
1193 }
1194 s->session->verify_result = s->verify_result;
1195
1196 x=NULL;
1197 ret=1;
1198
1199 if (0)
1200 {
1201 f_err:
1202 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1203 }
1204 err:
1205 EVP_PKEY_free(pkey);
1206 X509_free(x);
1207 sk_X509_pop_free(sk,X509_free);
1208 return(ret);
1209 }
1210
1211 int ssl3_get_key_exchange(SSL *s)
1212 {
1213 #ifndef OPENSSL_NO_RSA
1214 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1215 #endif
1216 EVP_MD_CTX md_ctx;
1217 unsigned char *param,*p;
1218 int al,i,j,param_len,ok;
1219 long n,alg_k,alg_a;
1220 EVP_PKEY *pkey=NULL;
1221 #ifndef OPENSSL_NO_RSA
1222 RSA *rsa=NULL;
1223 #endif
1224 #ifndef OPENSSL_NO_DH
1225 DH *dh=NULL;
1226 #endif
1227 #ifndef OPENSSL_NO_ECDH
1228 EC_KEY *ecdh = NULL;
1229 BN_CTX *bn_ctx = NULL;
1230 EC_POINT *srvr_ecpoint = NULL;
1231 int curve_nid = 0;
1232 int encoded_pt_len = 0;
1233 #endif
1234
1235 /* use same message size as in ssl3_get_certificate_request()
1236 * as ServerKeyExchange message may be skipped */
1237 n=s->method->ssl_get_message(s,
1238 SSL3_ST_CR_KEY_EXCH_A,
1239 SSL3_ST_CR_KEY_EXCH_B,
1240 -1,
1241 s->max_cert_list,
1242 &ok);
1243 if (!ok) return((int)n);
1244
1245 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1246 {
1247 #ifndef OPENSSL_NO_PSK
1248 /* In plain PSK ciphersuite, ServerKeyExchange can be
1249 omitted if no identity hint is sent. Set
1250 session->sess_cert anyway to avoid problems
1251 later.*/
1252 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1253 {
1254 s->session->sess_cert=ssl_sess_cert_new();
1255 if (s->ctx->psk_identity_hint)
1256 OPENSSL_free(s->ctx->psk_identity_hint);
1257 s->ctx->psk_identity_hint = NULL;
1258 }
1259 #endif
1260 s->s3->tmp.reuse_message=1;
1261 return(1);
1262 }
1263
1264 param=p=(unsigned char *)s->init_msg;
1265 if (s->session->sess_cert != NULL)
1266 {
1267 #ifndef OPENSSL_NO_RSA
1268 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1269 {
1270 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1271 s->session->sess_cert->peer_rsa_tmp=NULL;
1272 }
1273 #endif
1274 #ifndef OPENSSL_NO_DH
1275 if (s->session->sess_cert->peer_dh_tmp)
1276 {
1277 DH_free(s->session->sess_cert->peer_dh_tmp);
1278 s->session->sess_cert->peer_dh_tmp=NULL;
1279 }
1280 #endif
1281 #ifndef OPENSSL_NO_ECDH
1282 if (s->session->sess_cert->peer_ecdh_tmp)
1283 {
1284 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1285 s->session->sess_cert->peer_ecdh_tmp=NULL;
1286 }
1287 #endif
1288 }
1289 else
1290 {
1291 s->session->sess_cert=ssl_sess_cert_new();
1292 }
1293
1294 param_len=0;
1295 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1296 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1297 EVP_MD_CTX_init(&md_ctx);
1298
1299 #ifndef OPENSSL_NO_PSK
1300 if (alg_k & SSL_kPSK)
1301 {
1302 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1303
1304 al=SSL_AD_HANDSHAKE_FAILURE;
1305 n2s(p,i);
1306 param_len=i+2;
1307 /* Store PSK identity hint for later use, hint is used
1308 * in ssl3_send_client_key_exchange. Assume that the
1309 * maximum length of a PSK identity hint can be as
1310 * long as the maximum length of a PSK identity. */
1311 if (i > PSK_MAX_IDENTITY_LEN)
1312 {
1313 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1314 SSL_R_DATA_LENGTH_TOO_LONG);
1315 goto f_err;
1316 }
1317 if (param_len > n)
1318 {
1319 al=SSL_AD_DECODE_ERROR;
1320 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1321 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1322 goto f_err;
1323 }
1324 /* If received PSK identity hint contains NULL
1325 * characters, the hint is truncated from the first
1326 * NULL. p may not be ending with NULL, so create a
1327 * NULL-terminated string. */
1328 memcpy(tmp_id_hint, p, i);
1329 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1330 if (s->ctx->psk_identity_hint != NULL)
1331 OPENSSL_free(s->ctx->psk_identity_hint);
1332 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1333 if (s->ctx->psk_identity_hint == NULL)
1334 {
1335 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE );
1336 goto f_err;
1337 }
1338
1339 p+=i;
1340 n-=param_len;
1341 }
1342 else
1343 #endif /* !OPENSSL_NO_PSK */
1344 #ifndef OPENSSL_NO_RSA
1345 if (alg_k & SSL_kRSA)
1346 {
1347 if ((rsa=RSA_new()) == NULL)
1348 {
1349 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE) ;
1350 goto err;
1351 }
1352 n2s(p,i);
1353 param_len=i+2;
1354 if (param_len > n)
1355 {
1356 al=SSL_AD_DECODE_ERROR;
1357 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS _LENGTH);
1358 goto f_err;
1359 }
1360 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1361 {
1362 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1363 goto err;
1364 }
1365 p+=i;
1366
1367 n2s(p,i);
1368 param_len+=i+2;
1369 if (param_len > n)
1370 {
1371 al=SSL_AD_DECODE_ERROR;
1372 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGT H);
1373 goto f_err;
1374 }
1375 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1376 {
1377 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1378 goto err;
1379 }
1380 p+=i;
1381 n-=param_len;
1382
1383 /* this should be because we are using an export cipher */
1384 if (alg_a & SSL_aRSA)
1385 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[S SL_PKEY_RSA_ENC].x509);
1386 else
1387 {
1388 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR) ;
1389 goto err;
1390 }
1391 s->session->sess_cert->peer_rsa_tmp=rsa;
1392 rsa=NULL;
1393 }
1394 #else /* OPENSSL_NO_RSA */
1395 if (0)
1396 ;
1397 #endif
1398 #ifndef OPENSSL_NO_DH
1399 else if (alg_k & SSL_kEDH)
1400 {
1401 if ((dh=DH_new()) == NULL)
1402 {
1403 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1404 goto err;
1405 }
1406 n2s(p,i);
1407 param_len=i+2;
1408 if (param_len > n)
1409 {
1410 al=SSL_AD_DECODE_ERROR;
1411 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH );
1412 goto f_err;
1413 }
1414 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1415 {
1416 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1417 goto err;
1418 }
1419 p+=i;
1420
1421 n2s(p,i);
1422 param_len+=i+2;
1423 if (param_len > n)
1424 {
1425 al=SSL_AD_DECODE_ERROR;
1426 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH );
1427 goto f_err;
1428 }
1429 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1430 {
1431 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1432 goto err;
1433 }
1434 p+=i;
1435
1436 n2s(p,i);
1437 param_len+=i+2;
1438 if (param_len > n)
1439 {
1440 al=SSL_AD_DECODE_ERROR;
1441 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_ LENGTH);
1442 goto f_err;
1443 }
1444 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1445 {
1446 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1447 goto err;
1448 }
1449 p+=i;
1450 n-=param_len;
1451
1452 #ifndef OPENSSL_NO_RSA
1453 if (alg_a & SSL_aRSA)
1454 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[S SL_PKEY_RSA_ENC].x509);
1455 #else
1456 if (0)
1457 ;
1458 #endif
1459 #ifndef OPENSSL_NO_DSA
1460 else if (alg_a & SSL_aDSS)
1461 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[S SL_PKEY_DSA_SIGN].x509);
1462 #endif
1463 /* else anonymous DH, so no certificate or pkey. */
1464
1465 s->session->sess_cert->peer_dh_tmp=dh;
1466 dh=NULL;
1467 }
1468 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1469 {
1470 al=SSL_AD_ILLEGAL_PARAMETER;
1471 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTE D_CIPHER);
1472 goto f_err;
1473 }
1474 #endif /* !OPENSSL_NO_DH */
1475
1476 #ifndef OPENSSL_NO_ECDH
1477 else if (alg_k & SSL_kEECDH)
1478 {
1479 EC_GROUP *ngroup;
1480 const EC_GROUP *group;
1481
1482 if ((ecdh=EC_KEY_new()) == NULL)
1483 {
1484 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE) ;
1485 goto err;
1486 }
1487
1488 /* Extract elliptic curve parameters and the
1489 * server's ephemeral ECDH public key.
1490 * Keep accumulating lengths of various components in
1491 * param_len and make sure it never exceeds n.
1492 */
1493
1494 /* XXX: For now we only support named (not generic) curves
1495 * and the ECParameters in this case is just three bytes.
1496 */
1497 param_len=3;
1498 if ((param_len > n) ||
1499 (*p != NAMED_CURVE_TYPE) ||
1500 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1501 {
1502 al=SSL_AD_INTERNAL_ERROR;
1503 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ ECDH_PARAMETERS);
1504 goto f_err;
1505 }
1506
1507 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1508 if (ngroup == NULL)
1509 {
1510 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1511 goto err;
1512 }
1513 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1514 {
1515 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1516 goto err;
1517 }
1518 EC_GROUP_free(ngroup);
1519
1520 group = EC_KEY_get0_group(ecdh);
1521
1522 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1523 (EC_GROUP_get_degree(group) > 163))
1524 {
1525 al=SSL_AD_EXPORT_RESTRICTION;
1526 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LAR GE_FOR_CIPHER);
1527 goto f_err;
1528 }
1529
1530 p+=3;
1531
1532 /* Next, get the encoded ECPoint */
1533 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1534 ((bn_ctx = BN_CTX_new()) == NULL))
1535 {
1536 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE) ;
1537 goto err;
1538 }
1539
1540 encoded_pt_len = *p; /* length of encoded point */
1541 p+=1;
1542 param_len += (1 + encoded_pt_len);
1543 if ((param_len > n) ||
1544 (EC_POINT_oct2point(group, srvr_ecpoint,
1545 p, encoded_pt_len, bn_ctx) == 0))
1546 {
1547 al=SSL_AD_DECODE_ERROR;
1548 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1549 goto f_err;
1550 }
1551
1552 n-=param_len;
1553 p+=encoded_pt_len;
1554
1555 /* The ECC/TLS specification does not mention
1556 * the use of DSA to sign ECParameters in the server
1557 * key exchange message. We do support RSA and ECDSA.
1558 */
1559 if (0) ;
1560 #ifndef OPENSSL_NO_RSA
1561 else if (alg_a & SSL_aRSA)
1562 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[S SL_PKEY_RSA_ENC].x509);
1563 #endif
1564 #ifndef OPENSSL_NO_ECDSA
1565 else if (alg_a & SSL_aECDSA)
1566 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[S SL_PKEY_ECC].x509);
1567 #endif
1568 /* else anonymous ECDH, so no certificate or pkey. */
1569 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1570 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1571 ecdh=NULL;
1572 BN_CTX_free(bn_ctx);
1573 bn_ctx = NULL;
1574 EC_POINT_free(srvr_ecpoint);
1575 srvr_ecpoint = NULL;
1576 }
1577 else if (alg_k)
1578 {
1579 al=SSL_AD_UNEXPECTED_MESSAGE;
1580 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1581 goto f_err;
1582 }
1583 #endif /* !OPENSSL_NO_ECDH */
1584
1585
1586 /* p points to the next byte, there are 'n' bytes left */
1587
1588 /* if it was signed, check the signature */
1589 if (pkey != NULL)
1590 {
1591 n2s(p,i);
1592 n-=2;
1593 j=EVP_PKEY_size(pkey);
1594
1595 if ((i != n) || (n > j) || (n <= 0))
1596 {
1597 /* wrong packet length */
1598 al=SSL_AD_DECODE_ERROR;
1599 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE _LENGTH);
1600 goto f_err;
1601 }
1602
1603 #ifndef OPENSSL_NO_RSA
1604 if (pkey->type == EVP_PKEY_RSA)
1605 {
1606 int num;
1607
1608 j=0;
1609 q=md_buf;
1610 for (num=2; num > 0; num--)
1611 {
1612 EVP_DigestInit_ex(&md_ctx,(num == 2)
1613 ?s->ctx->md5:s->ctx->sha1, NULL);
1614 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[ 0]),SSL3_RANDOM_SIZE);
1615 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[ 0]),SSL3_RANDOM_SIZE);
1616 EVP_DigestUpdate(&md_ctx,param,param_len);
1617 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i) ;
1618 q+=i;
1619 j+=i;
1620 }
1621 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1622 pkey->pkey.rsa);
1623 if (i < 0)
1624 {
1625 al=SSL_AD_DECRYPT_ERROR;
1626 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA _DECRYPT);
1627 goto f_err;
1628 }
1629 if (i == 0)
1630 {
1631 /* bad signature */
1632 al=SSL_AD_DECRYPT_ERROR;
1633 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIG NATURE);
1634 goto f_err;
1635 }
1636 }
1637 else
1638 #endif
1639 #ifndef OPENSSL_NO_DSA
1640 if (pkey->type == EVP_PKEY_DSA)
1641 {
1642 /* lets do DSS */
1643 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1644 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3 _RANDOM_SIZE);
1645 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3 _RANDOM_SIZE);
1646 EVP_VerifyUpdate(&md_ctx,param,param_len);
1647 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1648 {
1649 /* bad signature */
1650 al=SSL_AD_DECRYPT_ERROR;
1651 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIG NATURE);
1652 goto f_err;
1653 }
1654 }
1655 else
1656 #endif
1657 #ifndef OPENSSL_NO_ECDSA
1658 if (pkey->type == EVP_PKEY_EC)
1659 {
1660 /* let's do ECDSA */
1661 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1662 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3 _RANDOM_SIZE);
1663 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3 _RANDOM_SIZE);
1664 EVP_VerifyUpdate(&md_ctx,param,param_len);
1665 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1666 {
1667 /* bad signature */
1668 al=SSL_AD_DECRYPT_ERROR;
1669 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIG NATURE);
1670 goto f_err;
1671 }
1672 }
1673 else
1674 #endif
1675 {
1676 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR) ;
1677 goto err;
1678 }
1679 }
1680 else
1681 {
1682 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1683 /* aNULL or kPSK do not need public keys */
1684 {
1685 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR) ;
1686 goto err;
1687 }
1688 /* still data left over */
1689 if (n != 0)
1690 {
1691 al=SSL_AD_DECODE_ERROR;
1692 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_M ESSAGE);
1693 goto f_err;
1694 }
1695 }
1696 EVP_PKEY_free(pkey);
1697 EVP_MD_CTX_cleanup(&md_ctx);
1698 return(1);
1699 f_err:
1700 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1701 err:
1702 EVP_PKEY_free(pkey);
1703 #ifndef OPENSSL_NO_RSA
1704 if (rsa != NULL)
1705 RSA_free(rsa);
1706 #endif
1707 #ifndef OPENSSL_NO_DH
1708 if (dh != NULL)
1709 DH_free(dh);
1710 #endif
1711 #ifndef OPENSSL_NO_ECDH
1712 BN_CTX_free(bn_ctx);
1713 EC_POINT_free(srvr_ecpoint);
1714 if (ecdh != NULL)
1715 EC_KEY_free(ecdh);
1716 #endif
1717 EVP_MD_CTX_cleanup(&md_ctx);
1718 return(-1);
1719 }
1720
1721 int ssl3_get_certificate_request(SSL *s)
1722 {
1723 int ok,ret=0;
1724 unsigned long n,nc,l;
1725 unsigned int llen,ctype_num,i;
1726 X509_NAME *xn=NULL;
1727 const unsigned char *p,*q;
1728 unsigned char *d;
1729 STACK_OF(X509_NAME) *ca_sk=NULL;
1730
1731 n=s->method->ssl_get_message(s,
1732 SSL3_ST_CR_CERT_REQ_A,
1733 SSL3_ST_CR_CERT_REQ_B,
1734 -1,
1735 s->max_cert_list,
1736 &ok);
1737
1738 if (!ok) return((int)n);
1739
1740 s->s3->tmp.cert_req=0;
1741
1742 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1743 {
1744 s->s3->tmp.reuse_message=1;
1745 return(1);
1746 }
1747
1748 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1749 {
1750 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1751 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TY PE);
1752 goto err;
1753 }
1754
1755 /* TLS does not like anon-DH with client cert */
1756 if (s->version > SSL3_VERSION)
1757 {
1758 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1759 {
1760 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAG E);
1761 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIE NT_CERT_REQ_WITH_ANON_CIPHER);
1762 goto err;
1763 }
1764 }
1765
1766 p=d=(unsigned char *)s->init_msg;
1767
1768 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1769 {
1770 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1771 goto err;
1772 }
1773
1774 /* get the certificate types */
1775 ctype_num= *(p++);
1776 if (ctype_num > SSL3_CT_NUMBER)
1777 ctype_num=SSL3_CT_NUMBER;
1778 for (i=0; i<ctype_num; i++)
1779 s->s3->tmp.ctype[i]= p[i];
1780 p+=ctype_num;
1781
1782 /* get the CA RDNs */
1783 n2s(p,llen);
1784 #if 0
1785 {
1786 FILE *out;
1787 out=fopen("/tmp/vsign.der","w");
1788 fwrite(p,1,llen,out);
1789 fclose(out);
1790 }
1791 #endif
1792
1793 if ((llen+ctype_num+2+1) != n)
1794 {
1795 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1796 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH) ;
1797 goto err;
1798 }
1799
1800 for (nc=0; nc<llen; )
1801 {
1802 n2s(p,l);
1803 if ((l+nc+2) > llen)
1804 {
1805 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1806 goto cont; /* netscape bugs */
1807 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1808 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TO O_LONG);
1809 goto err;
1810 }
1811
1812 q=p;
1813
1814 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1815 {
1816 /* If netscape tolerance is on, ignore errors */
1817 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1818 goto cont;
1819 else
1820 {
1821 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ER ROR);
1822 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ ASN1_LIB);
1823 goto err;
1824 }
1825 }
1826
1827 if (q != (p+l))
1828 {
1829 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1830 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LE NGTH_MISMATCH);
1831 goto err;
1832 }
1833 if (!sk_X509_NAME_push(ca_sk,xn))
1834 {
1835 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_F AILURE);
1836 goto err;
1837 }
1838
1839 p+=l;
1840 nc+=l+2;
1841 }
1842
1843 if (0)
1844 {
1845 cont:
1846 ERR_clear_error();
1847 }
1848
1849 /* we should setup a certificate to return.... */
1850 s->s3->tmp.cert_req=1;
1851 s->s3->tmp.ctype_num=ctype_num;
1852 if (s->s3->tmp.ca_names != NULL)
1853 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1854 s->s3->tmp.ca_names=ca_sk;
1855 ca_sk=NULL;
1856
1857 ret=1;
1858 err:
1859 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1860 return(ret);
1861 }
1862
1863 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1864 {
1865 return(X509_NAME_cmp(*a,*b));
1866 }
1867 #ifndef OPENSSL_NO_TLSEXT
1868 int ssl3_get_new_session_ticket(SSL *s)
1869 {
1870 int ok,al,ret=0, ticklen;
1871 long n;
1872 const unsigned char *p;
1873 unsigned char *d;
1874
1875 n=s->method->ssl_get_message(s,
1876 SSL3_ST_CR_SESSION_TICKET_A,
1877 SSL3_ST_CR_SESSION_TICKET_B,
1878 -1,
1879 16384,
1880 &ok);
1881
1882 if (!ok)
1883 return((int)n);
1884
1885 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1886 {
1887 s->s3->tmp.reuse_message=1;
1888 return(1);
1889 }
1890 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1891 {
1892 al=SSL_AD_UNEXPECTED_MESSAGE;
1893 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE) ;
1894 goto f_err;
1895 }
1896 if (n < 6)
1897 {
1898 /* need at least ticket_lifetime_hint + ticket length */
1899 al = SSL_AD_DECODE_ERROR;
1900 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1901 goto f_err;
1902 }
1903
1904 p=d=(unsigned char *)s->init_msg;
1905 n2l(p, s->session->tlsext_tick_lifetime_hint);
1906 n2s(p, ticklen);
1907 /* ticket_lifetime_hint + ticket_length + ticket */
1908 if (ticklen + 6 != n)
1909 {
1910 al = SSL_AD_DECODE_ERROR;
1911 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1912 goto f_err;
1913 }
1914 if (s->session->tlsext_tick)
1915 {
1916 OPENSSL_free(s->session->tlsext_tick);
1917 s->session->tlsext_ticklen = 0;
1918 }
1919 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1920 if (!s->session->tlsext_tick)
1921 {
1922 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1923 goto err;
1924 }
1925 memcpy(s->session->tlsext_tick, p, ticklen);
1926 s->session->tlsext_ticklen = ticklen;
1927 /* There are two ways to detect a resumed ticket sesion.
1928 * One is to set an appropriate session ID and then the server
1929 * must return a match in ServerHello. This allows the normal
1930 * client session ID matching to work and we know much
1931 * earlier that the ticket has been accepted.
1932 *
1933 * The other way is to set zero length session ID when the
1934 * ticket is presented and rely on the handshake to determine
1935 * session resumption.
1936 *
1937 * We choose the former approach because this fits in with
1938 * assumptions elsewhere in OpenSSL. The session ID is set
1939 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1940 * ticket.
1941 */
1942 EVP_Digest(p, ticklen,
1943 s->session->session_id, &s->session->session_id_length,
1944 #ifndef OPENSSL_NO_SHA256
1945 EVP_sha256(), NULL);
1946 #else
1947 EVP_sha1(), NULL);
1948 #endif
1949 ret=1;
1950 return(ret);
1951 f_err:
1952 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1953 err:
1954 return(-1);
1955 }
1956
1957 int ssl3_get_cert_status(SSL *s)
1958 {
1959 int ok, al;
1960 unsigned long resplen,n;
1961 const unsigned char *p;
1962
1963 n=s->method->ssl_get_message(s,
1964 SSL3_ST_CR_CERT_STATUS_A,
1965 SSL3_ST_CR_CERT_STATUS_B,
1966 SSL3_MT_CERTIFICATE_STATUS,
1967 16384,
1968 &ok);
1969
1970 if (!ok) return((int)n);
1971 if (n < 4)
1972 {
1973 /* need at least status type + length */
1974 al = SSL_AD_DECODE_ERROR;
1975 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1976 goto f_err;
1977 }
1978 p = (unsigned char *)s->init_msg;
1979 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1980 {
1981 al = SSL_AD_DECODE_ERROR;
1982 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE) ;
1983 goto f_err;
1984 }
1985 n2l3(p, resplen);
1986 if (resplen + 4 != n)
1987 {
1988 al = SSL_AD_DECODE_ERROR;
1989 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1990 goto f_err;
1991 }
1992 if (s->tlsext_ocsp_resp)
1993 OPENSSL_free(s->tlsext_ocsp_resp);
1994 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1995 if (!s->tlsext_ocsp_resp)
1996 {
1997 al = SSL_AD_INTERNAL_ERROR;
1998 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1999 goto f_err;
2000 }
2001 s->tlsext_ocsp_resplen = resplen;
2002 if (s->ctx->tlsext_status_cb)
2003 {
2004 int ret;
2005 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2006 if (ret == 0)
2007 {
2008 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2009 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_R ESPONSE);
2010 goto f_err;
2011 }
2012 if (ret < 0)
2013 {
2014 al = SSL_AD_INTERNAL_ERROR;
2015 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2016 goto f_err;
2017 }
2018 }
2019 return 1;
2020 f_err:
2021 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2022 return(-1);
2023 }
2024 #endif
2025
2026 int ssl3_get_server_done(SSL *s)
2027 {
2028 int ok,ret=0;
2029 long n;
2030
2031 n=s->method->ssl_get_message(s,
2032 SSL3_ST_CR_SRVR_DONE_A,
2033 SSL3_ST_CR_SRVR_DONE_B,
2034 SSL3_MT_SERVER_DONE,
2035 30, /* should be very small, like 0 :-) */
2036 &ok);
2037
2038 if (!ok) return((int)n);
2039 if (n > 0)
2040 {
2041 /* should contain no data */
2042 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2043 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2044 return -1;
2045 }
2046 ret=1;
2047 return(ret);
2048 }
2049
2050
2051 int ssl3_send_client_key_exchange(SSL *s)
2052 {
2053 unsigned char *p,*d;
2054 int n;
2055 unsigned long alg_k;
2056 #ifndef OPENSSL_NO_RSA
2057 unsigned char *q;
2058 EVP_PKEY *pkey=NULL;
2059 #endif
2060 #ifndef OPENSSL_NO_KRB5
2061 KSSL_ERR kssl_err;
2062 #endif /* OPENSSL_NO_KRB5 */
2063 #ifndef OPENSSL_NO_ECDH
2064 EC_KEY *clnt_ecdh = NULL;
2065 const EC_POINT *srvr_ecpoint = NULL;
2066 EVP_PKEY *srvr_pub_pkey = NULL;
2067 unsigned char *encodedPoint = NULL;
2068 int encoded_pt_len = 0;
2069 BN_CTX * bn_ctx = NULL;
2070 #endif
2071
2072 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2073 {
2074 d=(unsigned char *)s->init_buf->data;
2075 p= &(d[4]);
2076
2077 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2078
2079 /* Fool emacs indentation */
2080 if (0) {}
2081 #ifndef OPENSSL_NO_RSA
2082 else if (alg_k & SSL_kRSA)
2083 {
2084 RSA *rsa;
2085 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2086
2087 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2088 rsa=s->session->sess_cert->peer_rsa_tmp;
2089 else
2090 {
2091 pkey=X509_get_pubkey(s->session->sess_cert->peer _pkeys[SSL_PKEY_RSA_ENC].x509);
2092 if ((pkey == NULL) ||
2093 (pkey->type != EVP_PKEY_RSA) ||
2094 (pkey->pkey.rsa == NULL))
2095 {
2096 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHAN GE,ERR_R_INTERNAL_ERROR);
2097 goto err;
2098 }
2099 rsa=pkey->pkey.rsa;
2100 EVP_PKEY_free(pkey);
2101 }
2102
2103 tmp_buf[0]=s->client_version>>8;
2104 tmp_buf[1]=s->client_version&0xff;
2105 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2106 goto err;
2107
2108 s->session->master_key_length=sizeof tmp_buf;
2109
2110 q=p;
2111 /* Fix buf for TLS and beyond */
2112 if (s->version > SSL3_VERSION)
2113 p+=2;
2114 n=RSA_public_encrypt(sizeof tmp_buf,
2115 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2116 #ifdef PKCS1_CHECK
2117 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2118 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2119 #endif
2120 if (n <= 0)
2121 {
2122 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R _BAD_RSA_ENCRYPT);
2123 goto err;
2124 }
2125
2126 /* Fix buf for TLS and beyond */
2127 if (s->version > SSL3_VERSION)
2128 {
2129 s2n(n,q);
2130 n+=2;
2131 }
2132
2133 s->session->master_key_length=
2134 s->method->ssl3_enc->generate_master_secret(s,
2135 s->session->master_key,
2136 tmp_buf,sizeof tmp_buf);
2137 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2138 }
2139 #endif
2140 #ifndef OPENSSL_NO_KRB5
2141 else if (alg_k & SSL_kKRB5)
2142 {
2143 krb5_error_code krb5rc;
2144 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2145 /* krb5_data krb5_ap_req; */
2146 krb5_data *enc_ticket;
2147 krb5_data authenticator, *authp = NULL;
2148 EVP_CIPHER_CTX ciph_ctx;
2149 const EVP_CIPHER *enc = NULL;
2150 unsigned char iv[EVP_MAX_IV_LENGTH];
2151 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2152 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2153 + EVP_MAX_IV_LENGTH];
2154 int padl, outl = sizeof(epms);
2155
2156 EVP_CIPHER_CTX_init(&ciph_ctx);
2157
2158 #ifdef KSSL_DEBUG
2159 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2160 alg_k, SSL_kKRB5);
2161 #endif /* KSSL_DEBUG */
2162
2163 authp = NULL;
2164 #ifdef KRB5SENDAUTH
2165 if (KRB5SENDAUTH) authp = &authenticator;
2166 #endif /* KRB5SENDAUTH */
2167
2168 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2169 &kssl_err);
2170 enc = kssl_map_enc(kssl_ctx->enctype);
2171 if (enc == NULL)
2172 goto err;
2173 #ifdef KSSL_DEBUG
2174 {
2175 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2176 if (krb5rc && kssl_err.text)
2177 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2178 }
2179 #endif /* KSSL_DEBUG */
2180
2181 if (krb5rc)
2182 {
2183 ssl3_send_alert(s,SSL3_AL_FATAL,
2184 SSL_AD_HANDSHAKE_FAILURE);
2185 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2186 kssl_err.reason);
2187 goto err;
2188 }
2189
2190 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2191 ** in place of RFC 2712 KerberosWrapper, as in:
2192 **
2193 ** Send ticket (copy to *p, set n = length)
2194 ** n = krb5_ap_req.length;
2195 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2196 ** if (krb5_ap_req.data)
2197 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2198 **
2199 ** Now using real RFC 2712 KerberosWrapper
2200 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2201 ** Note: 2712 "opaque" types are here replaced
2202 ** with a 2-byte length followed by the value.
2203 ** Example:
2204 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2205 ** Where "xx xx" = length bytes. Shown here with
2206 ** optional authenticator omitted.
2207 */
2208
2209 /* KerberosWrapper.Ticket */
2210 s2n(enc_ticket->length,p);
2211 memcpy(p, enc_ticket->data, enc_ticket->length);
2212 p+= enc_ticket->length;
2213 n = enc_ticket->length + 2;
2214
2215 /* KerberosWrapper.Authenticator */
2216 if (authp && authp->length)
2217 {
2218 s2n(authp->length,p);
2219 memcpy(p, authp->data, authp->length);
2220 p+= authp->length;
2221 n+= authp->length + 2;
2222
2223 free(authp->data);
2224 authp->data = NULL;
2225 authp->length = 0;
2226 }
2227 else
2228 {
2229 s2n(0,p);/* null authenticator length */
2230 n+=2;
2231 }
2232
2233 tmp_buf[0]=s->client_version>>8;
2234 tmp_buf[1]=s->client_version&0xff;
2235 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2236 goto err;
2237
2238 /* 20010420 VRS. Tried it this way; failed.
2239 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2240 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2241 ** kssl_ctx->length);
2242 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2243 */
2244
2245 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2246 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2247 kssl_ctx->key,iv);
2248 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2249 sizeof tmp_buf);
2250 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2251 outl += padl;
2252 if (outl > (int)sizeof epms)
2253 {
2254 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_ R_INTERNAL_ERROR);
2255 goto err;
2256 }
2257 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2258
2259 /* KerberosWrapper.EncryptedPreMasterSecret */
2260 s2n(outl,p);
2261 memcpy(p, epms, outl);
2262 p+=outl;
2263 n+=outl + 2;
2264
2265 s->session->master_key_length=
2266 s->method->ssl3_enc->generate_master_secret(s,
2267 s->session->master_key,
2268 tmp_buf, sizeof tmp_buf);
2269
2270 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2271 OPENSSL_cleanse(epms, outl);
2272 }
2273 #endif
2274 #ifndef OPENSSL_NO_DH
2275 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2276 {
2277 DH *dh_srvr,*dh_clnt;
2278
2279 if (s->session->sess_cert == NULL)
2280 {
2281 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTE D_MESSAGE);
2282 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R _UNEXPECTED_MESSAGE);
2283 goto err;
2284 }
2285
2286 if (s->session->sess_cert->peer_dh_tmp != NULL)
2287 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2288 else
2289 {
2290 /* we get them from the cert */
2291 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE _FAILURE);
2292 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R _UNABLE_TO_FIND_DH_PARAMETERS);
2293 goto err;
2294 }
2295
2296 /* generate a new random key */
2297 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2298 {
2299 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R _DH_LIB);
2300 goto err;
2301 }
2302 if (!DH_generate_key(dh_clnt))
2303 {
2304 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R _DH_LIB);
2305 DH_free(dh_clnt);
2306 goto err;
2307 }
2308
2309 /* use the 'p' output buffer for the DH key, but
2310 * make sure to clear it out afterwards */
2311
2312 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2313
2314 if (n <= 0)
2315 {
2316 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R _DH_LIB);
2317 DH_free(dh_clnt);
2318 goto err;
2319 }
2320
2321 /* generate master key from the result */
2322 s->session->master_key_length=
2323 s->method->ssl3_enc->generate_master_secret(s,
2324 s->session->master_key,p,n);
2325 /* clean up */
2326 memset(p,0,n);
2327
2328 /* send off the data */
2329 n=BN_num_bytes(dh_clnt->pub_key);
2330 s2n(n,p);
2331 BN_bn2bin(dh_clnt->pub_key,p);
2332 n+=2;
2333
2334 DH_free(dh_clnt);
2335
2336 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2337 }
2338 #endif
2339
2340 #ifndef OPENSSL_NO_ECDH
2341 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2342 {
2343 const EC_GROUP *srvr_group = NULL;
2344 EC_KEY *tkey;
2345 int ecdh_clnt_cert = 0;
2346 int field_size = 0;
2347
2348 /* Did we send out the client's
2349 * ECDH share for use in premaster
2350 * computation as part of client certificate?
2351 * If so, set ecdh_clnt_cert to 1.
2352 */
2353 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NUL L))
2354 {
2355 /* XXX: For now, we do not support client
2356 * authentication using ECDH certificates.
2357 * To add such support, one needs to add
2358 * code that checks for appropriate
2359 * conditions and sets ecdh_clnt_cert to 1.
2360 * For example, the cert have an ECC
2361 * key on the same curve as the server's
2362 * and the key should be authorized for
2363 * key agreement.
2364 *
2365 * One also needs to add code in ssl3_connect
2366 * to skip sending the certificate verify
2367 * message.
2368 *
2369 * if ((s->cert->key->privatekey != NULL) &&
2370 * (s->cert->key->privatekey->type ==
2371 * EVP_PKEY_EC) && ...)
2372 * ecdh_clnt_cert = 1;
2373 */
2374 }
2375
2376 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2377 {
2378 tkey = s->session->sess_cert->peer_ecdh_tmp;
2379 }
2380 else
2381 {
2382 /* Get the Server Public Key from Cert */
2383 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2384 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2385 if ((srvr_pub_pkey == NULL) ||
2386 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2387 (srvr_pub_pkey->pkey.ec == NULL))
2388 {
2389 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHAN GE,
2390 ERR_R_INTERNAL_ERROR);
2391 goto err;
2392 }
2393
2394 tkey = srvr_pub_pkey->pkey.ec;
2395 }
2396
2397 srvr_group = EC_KEY_get0_group(tkey);
2398 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2399
2400 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2401 {
2402 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2403 ERR_R_INTERNAL_ERROR);
2404 goto err;
2405 }
2406
2407 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2408 {
2409 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R _MALLOC_FAILURE);
2410 goto err;
2411 }
2412
2413 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2414 {
2415 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R _EC_LIB);
2416 goto err;
2417 }
2418 if (ecdh_clnt_cert)
2419 {
2420 /* Reuse key info from our certificate
2421 * We only need our private key to perform
2422 * the ECDH computation.
2423 */
2424 const BIGNUM *priv_key;
2425 tkey = s->cert->key->privatekey->pkey.ec;
2426 priv_key = EC_KEY_get0_private_key(tkey);
2427 if (priv_key == NULL)
2428 {
2429 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHAN GE,ERR_R_MALLOC_FAILURE);
2430 goto err;
2431 }
2432 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key) )
2433 {
2434 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHAN GE,ERR_R_EC_LIB);
2435 goto err;
2436 }
2437 }
2438 else
2439 {
2440 /* Generate a new ECDH key pair */
2441 if (!(EC_KEY_generate_key(clnt_ecdh)))
2442 {
2443 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHAN GE, ERR_R_ECDH_LIB);
2444 goto err;
2445 }
2446 }
2447
2448 /* use the 'p' output buffer for the ECDH key, but
2449 * make sure to clear it out afterwards
2450 */
2451
2452 field_size = EC_GROUP_get_degree(srvr_group);
2453 if (field_size <= 0)
2454 {
2455 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2456 ERR_R_ECDH_LIB);
2457 goto err;
2458 }
2459 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, cl nt_ecdh, NULL);
2460 if (n <= 0)
2461 {
2462 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2463 ERR_R_ECDH_LIB);
2464 goto err;
2465 }
2466
2467 /* generate master key from the result */
2468 s->session->master_key_length = s->method->ssl3_enc \
2469 -> generate_master_secret(s,
2470 s->session->master_key,
2471 p, n);
2472
2473 memset(p, 0, n); /* clean up */
2474
2475 if (ecdh_clnt_cert)
2476 {
2477 /* Send empty client key exch message */
2478 n = 0;
2479 }
2480 else
2481 {
2482 /* First check the size of encoding and
2483 * allocate memory accordingly.
2484 */
2485 encoded_pt_len =
2486 EC_POINT_point2oct(srvr_group,
2487 EC_KEY_get0_public_key(clnt_ecdh),
2488 POINT_CONVERSION_UNCOMPRESSED,
2489 NULL, 0, NULL);
2490
2491 encodedPoint = (unsigned char *)
2492 OPENSSL_malloc(encoded_pt_len *
2493 sizeof(unsigned char));
2494 bn_ctx = BN_CTX_new();
2495 if ((encodedPoint == NULL) ||
2496 (bn_ctx == NULL))
2497 {
2498 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHAN GE,ERR_R_MALLOC_FAILURE);
2499 goto err;
2500 }
2501
2502 /* Encode the public key */
2503 n = EC_POINT_point2oct(srvr_group,
2504 EC_KEY_get0_public_key(clnt_ecdh),
2505 POINT_CONVERSION_UNCOMPRESSED,
2506 encodedPoint, encoded_pt_len, bn_ctx);
2507
2508 *p = n; /* length of encoded point */
2509 /* Encoded point will be copied here */
2510 p += 1;
2511 /* copy the point */
2512 memcpy((unsigned char *)p, encodedPoint, n);
2513 /* increment n to account for length field */
2514 n += 1;
2515 }
2516
2517 /* Free allocated memory */
2518 BN_CTX_free(bn_ctx);
2519 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2520 if (clnt_ecdh != NULL)
2521 EC_KEY_free(clnt_ecdh);
2522 EVP_PKEY_free(srvr_pub_pkey);
2523 }
2524 #endif /* !OPENSSL_NO_ECDH */
2525 else if (alg_k & SSL_kGOST)
2526 {
2527 /* GOST key exchange message creation */
2528 EVP_PKEY_CTX *pkey_ctx;
2529 X509 *peer_cert;
2530 size_t msglen;
2531 unsigned int md_len;
2532 int keytype;
2533 unsigned char premaster_secret[32],shared_ukm[32], tmp[2 56];
2534 EVP_MD_CTX *ukm_hash;
2535 EVP_PKEY *pub_key;
2536
2537 /* Get server sertificate PKEY and create ctx from it */
2538 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL _PKEY_GOST01)].x509;
2539 if (!peer_cert)
2540 peer_cert=s->session->sess_cert->peer_pkeys[(key type=SSL_PKEY_GOST94)].x509;
2541 if (!peer_cert) {
2542 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHAN GE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2543 goto err;
2544 }
2545
2546 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_c ert),NULL);
2547 /* If we have send a certificate, and certificate key
2548
2549 * parameters match those of server certificate, use
2550 * certificate key for key exchange
2551 */
2552
2553 /* Otherwise, generate ephemeral key pair */
2554
2555 EVP_PKEY_encrypt_init(pkey_ctx);
2556 /* Generate session key */
2557 RAND_bytes(premaster_secret,32);
2558 /* If we have client certificate, use its secret as peer key */
2559 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2560 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->k ey->privatekey) <=0) {
2561 /* If there was an error - just ignore i t. Ephemeral key
2562 * would be used
2563 */
2564 ERR_clear_error();
2565 }
2566 }
2567 /* Compute shared IV and store it in algorithm-specific
2568 * context data */
2569 ukm_hash = EVP_MD_CTX_create();
2570 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR 3411_94));
2571 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RAND OM_SIZE);
2572 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RAND OM_SIZE);
2573 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2574 EVP_MD_CTX_destroy(ukm_hash);
2575 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EV P_PKEY_CTRL_SET_IV,
2576 8,shared_ukm)<0) {
2577 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHAN GE,
2578 SSL_R_LIBRARY_BUG);
2579 goto err;
2580 }
2581 /* Make GOST keytransport blob message */
2582 /*Encapsulate it into sequence */
2583 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2584 msglen=255;
2585 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secr et,32)<0) {
2586 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2587 SSL_R_LIBRARY_BUG);
2588 goto err;
2589 }
2590 if (msglen >= 0x80)
2591 {
2592 *(p++)=0x81;
2593 *(p++)= msglen & 0xff;
2594 n=msglen+3;
2595 }
2596 else
2597 {
2598 *(p++)= msglen & 0xff;
2599 n=msglen+2;
2600 }
2601 memcpy(p, tmp, msglen);
2602 /* Check if pubkey from client certificate was used */
2603 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PE ER_KEY, 2, NULL) > 0)
2604 {
2605 /* Set flag "skip certificate verify" */
2606 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2607 }
2608 EVP_PKEY_CTX_free(pkey_ctx);
2609 s->session->master_key_length=
2610 s->method->ssl3_enc->generate_master_secret(s,
2611 s->session->master_key,premaster_secret, 32);
2612 EVP_PKEY_free(pub_key);
2613
2614 }
2615 #ifndef OPENSSL_NO_PSK
2616 else if (alg_k & SSL_kPSK)
2617 {
2618 char identity[PSK_MAX_IDENTITY_LEN];
2619 unsigned char *t = NULL;
2620 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2621 unsigned int pre_ms_len = 0, psk_len = 0;
2622 int psk_err = 1;
2623
2624 n = 0;
2625 if (s->psk_client_callback == NULL)
2626 {
2627 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2628 SSL_R_PSK_NO_CLIENT_CB);
2629 goto err;
2630 }
2631
2632 psk_len = s->psk_client_callback(s, s->ctx->psk_identity _hint,
2633 identity, PSK_MAX_IDENTITY_LEN,
2634 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2635 if (psk_len > PSK_MAX_PSK_LEN)
2636 {
2637 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2638 ERR_R_INTERNAL_ERROR);
2639 goto psk_err;
2640 }
2641 else if (psk_len == 0)
2642 {
2643 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2644 SSL_R_PSK_IDENTITY_NOT_FOUND);
2645 goto psk_err;
2646 }
2647
2648 /* create PSK pre_master_secret */
2649 pre_ms_len = 2+psk_len+2+psk_len;
2650 t = psk_or_pre_ms;
2651 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len) ;
2652 s2n(psk_len, t);
2653 memset(t, 0, psk_len);
2654 t+=psk_len;
2655 s2n(psk_len, t);
2656
2657 if (s->session->psk_identity_hint != NULL)
2658 OPENSSL_free(s->session->psk_identity_hint);
2659 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_i dentity_hint);
2660 if (s->ctx->psk_identity_hint != NULL &&
2661 s->session->psk_identity_hint == NULL)
2662 {
2663 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2664 ERR_R_MALLOC_FAILURE);
2665 goto psk_err;
2666 }
2667
2668 if (s->session->psk_identity != NULL)
2669 OPENSSL_free(s->session->psk_identity);
2670 s->session->psk_identity = BUF_strdup(identity);
2671 if (s->session->psk_identity == NULL)
2672 {
2673 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2674 ERR_R_MALLOC_FAILURE);
2675 goto psk_err;
2676 }
2677
2678 s->session->master_key_length =
2679 s->method->ssl3_enc->generate_master_secret(s,
2680 s->session->master_key,
2681 psk_or_pre_ms, pre_ms_len);
2682 n = strlen(identity);
2683 s2n(n, p);
2684 memcpy(p, identity, n);
2685 n+=2;
2686 psk_err = 0;
2687 psk_err:
2688 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2689 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2690 if (psk_err != 0)
2691 {
2692 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHA KE_FAILURE);
2693 goto err;
2694 }
2695 }
2696 #endif
2697 else
2698 {
2699 ssl3_send_alert(s, SSL3_AL_FATAL,
2700 SSL_AD_HANDSHAKE_FAILURE);
2701 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2702 ERR_R_INTERNAL_ERROR);
2703 goto err;
2704 }
2705
2706 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2707 l2n3(n,d);
2708
2709 s->state=SSL3_ST_CW_KEY_EXCH_B;
2710 /* number of bytes to write */
2711 s->init_num=n+4;
2712 s->init_off=0;
2713 }
2714
2715 /* SSL3_ST_CW_KEY_EXCH_B */
2716 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2717 err:
2718 #ifndef OPENSSL_NO_ECDH
2719 BN_CTX_free(bn_ctx);
2720 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2721 if (clnt_ecdh != NULL)
2722 EC_KEY_free(clnt_ecdh);
2723 EVP_PKEY_free(srvr_pub_pkey);
2724 #endif
2725 return(-1);
2726 }
2727
2728 int ssl3_send_client_verify(SSL *s)
2729 {
2730 unsigned char *p,*d;
2731 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2732 EVP_PKEY *pkey;
2733 EVP_PKEY_CTX *pctx=NULL;
2734 #ifndef OPENSSL_NO_RSA
2735 unsigned u=0;
2736 #endif
2737 unsigned long n;
2738 int j;
2739
2740 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2741 {
2742 d=(unsigned char *)s->init_buf->data;
2743 p= &(d[4]);
2744 pkey=s->cert->key->privatekey;
2745 /* Create context from key and test if sha1 is allowed as digest */
2746 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2747 EVP_PKEY_sign_init(pctx);
2748 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2749 {
2750 s->method->ssl3_enc->cert_verify_mac(s,
2751 NID_sha1,
2752 &(data[MD5_DIGEST_LENGTH]));
2753 }
2754 else
2755 {
2756 ERR_clear_error();
2757 }
2758 #ifndef OPENSSL_NO_RSA
2759 if (pkey->type == EVP_PKEY_RSA)
2760 {
2761 s->method->ssl3_enc->cert_verify_mac(s,
2762 NID_md5,
2763 &(data[0]));
2764 if (RSA_sign(NID_md5_sha1, data,
2765 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2766 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2767 {
2768 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_L IB);
2769 goto err;
2770 }
2771 s2n(u,p);
2772 n=u+2;
2773 }
2774 else
2775 #endif
2776 #ifndef OPENSSL_NO_DSA
2777 if (pkey->type == EVP_PKEY_DSA)
2778 {
2779 if (!DSA_sign(pkey->save_type,
2780 &(data[MD5_DIGEST_LENGTH]),
2781 SHA_DIGEST_LENGTH,&(p[2]),
2782 (unsigned int *)&j,pkey->pkey.dsa))
2783 {
2784 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_L IB);
2785 goto err;
2786 }
2787 s2n(j,p);
2788 n=j+2;
2789 }
2790 else
2791 #endif
2792 #ifndef OPENSSL_NO_ECDSA
2793 if (pkey->type == EVP_PKEY_EC)
2794 {
2795 if (!ECDSA_sign(pkey->save_type,
2796 &(data[MD5_DIGEST_LENGTH]),
2797 SHA_DIGEST_LENGTH,&(p[2]),
2798 (unsigned int *)&j,pkey->pkey.ec))
2799 {
2800 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2801 ERR_R_ECDSA_LIB);
2802 goto err;
2803 }
2804 s2n(j,p);
2805 n=j+2;
2806 }
2807 else
2808 #endif
2809 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_Go stR3410_2001)
2810 {
2811 unsigned char signbuf[64];
2812 int i;
2813 size_t sigsize=64;
2814 s->method->ssl3_enc->cert_verify_mac(s,
2815 NID_id_GostR3411_94,
2816 data);
2817 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2818 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2819 ERR_R_INTERNAL_ERROR);
2820 goto err;
2821 }
2822 for (i=63,j=0; i>=0; j++, i--) {
2823 p[2+j]=signbuf[i];
2824 }
2825 s2n(j,p);
2826 n=j+2;
2827 }
2828 else
2829 {
2830 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERRO R);
2831 goto err;
2832 }
2833 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2834 l2n3(n,d);
2835
2836 s->state=SSL3_ST_CW_CERT_VRFY_B;
2837 s->init_num=(int)n+4;
2838 s->init_off=0;
2839 }
2840 EVP_PKEY_CTX_free(pctx);
2841 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2842 err:
2843 EVP_PKEY_CTX_free(pctx);
2844 return(-1);
2845 }
2846
2847 int ssl3_send_client_certificate(SSL *s)
2848 {
2849 X509 *x509=NULL;
2850 EVP_PKEY *pkey=NULL;
2851 int i;
2852 unsigned long l;
2853
2854 if (s->state == SSL3_ST_CW_CERT_A)
2855 {
2856 if ((s->cert == NULL) ||
2857 (s->cert->key->x509 == NULL) ||
2858 (s->cert->key->privatekey == NULL))
2859 s->state=SSL3_ST_CW_CERT_B;
2860 else
2861 s->state=SSL3_ST_CW_CERT_C;
2862 }
2863
2864 /* We need to get a client cert */
2865 if (s->state == SSL3_ST_CW_CERT_B)
2866 {
2867 /* If we get an error, we need to
2868 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2869 * We then get retied later */
2870 i=0;
2871 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2872 if (i < 0)
2873 {
2874 s->rwstate=SSL_X509_LOOKUP;
2875 return(-1);
2876 }
2877 s->rwstate=SSL_NOTHING;
2878 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2879 {
2880 s->state=SSL3_ST_CW_CERT_B;
2881 if ( !SSL_use_certificate(s,x509) ||
2882 !SSL_use_PrivateKey(s,pkey))
2883 i=0;
2884 }
2885 else if (i == 1)
2886 {
2887 i=0;
2888 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA _RETURNED_BY_CALLBACK);
2889 }
2890
2891 if (x509 != NULL) X509_free(x509);
2892 if (pkey != NULL) EVP_PKEY_free(pkey);
2893 if (i == 0)
2894 {
2895 if (s->version == SSL3_VERSION)
2896 {
2897 s->s3->tmp.cert_req=0;
2898 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERT IFICATE);
2899 return(1);
2900 }
2901 else
2902 {
2903 s->s3->tmp.cert_req=2;
2904 }
2905 }
2906
2907 /* Ok, we have a cert */
2908 s->state=SSL3_ST_CW_CERT_C;
2909 }
2910
2911 if (s->state == SSL3_ST_CW_CERT_C)
2912 {
2913 s->state=SSL3_ST_CW_CERT_D;
2914 l=ssl3_output_cert_chain(s,
2915 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2916 s->init_num=(int)l;
2917 s->init_off=0;
2918 }
2919 /* SSL3_ST_CW_CERT_D */
2920 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2921 }
2922
2923 #define has_bits(i,m) (((i)&(m)) == (m))
2924
2925 int ssl3_check_cert_and_algorithm(SSL *s)
2926 {
2927 int i,idx;
2928 long alg_k,alg_a;
2929 EVP_PKEY *pkey=NULL;
2930 SESS_CERT *sc;
2931 #ifndef OPENSSL_NO_RSA
2932 RSA *rsa;
2933 #endif
2934 #ifndef OPENSSL_NO_DH
2935 DH *dh;
2936 #endif
2937
2938 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2939 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2940
2941 /* we don't have a certificate */
2942 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2943 return(1);
2944
2945 sc=s->session->sess_cert;
2946 if (sc == NULL)
2947 {
2948 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR) ;
2949 goto err;
2950 }
2951
2952 #ifndef OPENSSL_NO_RSA
2953 rsa=s->session->sess_cert->peer_rsa_tmp;
2954 #endif
2955 #ifndef OPENSSL_NO_DH
2956 dh=s->session->sess_cert->peer_dh_tmp;
2957 #endif
2958
2959 /* This is the passed certificate */
2960
2961 idx=sc->peer_cert_type;
2962 #ifndef OPENSSL_NO_ECDH
2963 if (idx == SSL_PKEY_ECC)
2964 {
2965 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2966 s->s3->tmp.new_cipher) == 0)
2967 { /* check failed */
2968 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC _CERT);
2969 goto f_err;
2970 }
2971 else
2972 {
2973 return 1;
2974 }
2975 }
2976 #endif
2977 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2978 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2979 EVP_PKEY_free(pkey);
2980
2981
2982 /* Check that we have a certificate if we require one */
2983 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2984 {
2985 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIG NING_CERT);
2986 goto f_err;
2987 }
2988 #ifndef OPENSSL_NO_DSA
2989 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2990 {
2991 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIG NING_CERT);
2992 goto f_err;
2993 }
2994 #endif
2995 #ifndef OPENSSL_NO_RSA
2996 if ((alg_k & SSL_kRSA) &&
2997 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2998 {
2999 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENC RYPTING_CERT);
3000 goto f_err;
3001 }
3002 #endif
3003 #ifndef OPENSSL_NO_DH
3004 if ((alg_k & SSL_kEDH) &&
3005 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3006 {
3007 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY) ;
3008 goto f_err;
3009 }
3010 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3011 {
3012 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_ CERT);
3013 goto f_err;
3014 }
3015 #ifndef OPENSSL_NO_DSA
3016 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3017 {
3018 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_ CERT);
3019 goto f_err;
3020 }
3021 #endif
3022 #endif
3023
3024 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3025 {
3026 #ifndef OPENSSL_NO_RSA
3027 if (alg_k & SSL_kRSA)
3028 {
3029 if (rsa == NULL
3030 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3-> tmp.new_cipher))
3031 {
3032 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R _MISSING_EXPORT_TMP_RSA_KEY);
3033 goto f_err;
3034 }
3035 }
3036 else
3037 #endif
3038 #ifndef OPENSSL_NO_DH
3039 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3040 {
3041 if (dh == NULL
3042 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3 ->tmp.new_cipher))
3043 {
3044 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R _MISSING_EXPORT_TMP_DH_KEY);
3045 goto f_err;
3046 }
3047 }
3048 else
3049 #endif
3050 {
3051 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN _KEY_EXCHANGE_TYPE);
3052 goto f_err;
3053 }
3054 }
3055 return(1);
3056 f_err:
3057 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3058 err:
3059 return(0);
3060 }
3061
3062 /* Check to see if handshake is full or resumed. Usually this is just a
3063 * case of checking to see if a cache hit has occurred. In the case of
3064 * session tickets we have to check the next message to be sure.
3065 */
3066
3067 #ifndef OPENSSL_NO_TLSEXT
3068 int ssl3_check_finished(SSL *s)
3069 {
3070 int ok;
3071 long n;
3072 /* If we have no ticket it cannot be a resumed session. */
3073 if (!s->session->tlsext_tick)
3074 return 1;
3075 /* this function is called when we really expect a Certificate
3076 * message, so permit appropriate message length */
3077 n=s->method->ssl_get_message(s,
3078 SSL3_ST_CR_CERT_A,
3079 SSL3_ST_CR_CERT_B,
3080 -1,
3081 s->max_cert_list,
3082 &ok);
3083 if (!ok) return((int)n);
3084 s->s3->tmp.reuse_message = 1;
3085 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3086 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3087 return 2;
3088
3089 return 1;
3090 }
3091 #endif
3092
3093 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3094 {
3095 int i = 0;
3096 #ifndef OPENSSL_NO_ENGINE
3097 if (s->ctx->client_cert_engine)
3098 {
3099 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3100 SSL_get_client_CA_list(s),
3101 px509, ppkey, NULL, NULL, NULL);
3102 if (i != 0)
3103 return i;
3104 }
3105 #endif
3106 if (s->ctx->client_cert_cb)
3107 i = s->ctx->client_cert_cb(s,px509,ppkey);
3108 return i;
3109 }
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« openssl.gyp ('K') | « openssl/ssl/s3_clnt.c ('k') | openssl/ssl/s3_enc.c » ('j') | patches/x509_hash_name_algorithm_change.patch » ('J')

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