2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
113 #include "ssl_locl.h"
114 #include <openssl/buffer.h>
115 #include <openssl/rand.h>
116 #include <openssl/objects.h>
117 #include <openssl/evp.h>
119 static const SSL_METHOD
*ssl23_get_client_method(int ver
);
120 static int ssl23_client_hello(SSL
*s
);
121 static int ssl23_get_server_hello(SSL
*s
);
122 static const SSL_METHOD
*ssl23_get_client_method(int ver
)
124 #ifndef OPENSSL_NO_SSL2
125 if (ver
== SSL2_VERSION
)
126 return(SSLv2_client_method());
128 if (ver
== SSL3_VERSION
)
129 return(SSLv3_client_method());
130 else if (ver
== TLS1_VERSION
)
131 return(TLSv1_client_method());
132 else if (ver
== TLS1_1_VERSION
)
133 return(TLSv1_1_client_method());
134 else if (ver
== TLS1_2_VERSION
)
135 return(TLSv1_2_client_method());
140 IMPLEMENT_ssl23_meth_func(SSLv23_client_method
,
141 ssl_undefined_function
,
143 ssl23_get_client_method
)
145 int ssl23_connect(SSL
*s
)
148 unsigned long Time
=(unsigned long)time(NULL
);
149 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
153 RAND_add(&Time
,sizeof(Time
),0);
157 if (s
->info_callback
!= NULL
)
159 else if (s
->ctx
->info_callback
!= NULL
)
160 cb
=s
->ctx
->info_callback
;
163 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
173 case SSL_ST_BEFORE
|SSL_ST_CONNECT
:
174 case SSL_ST_OK
|SSL_ST_CONNECT
:
176 if (s
->session
!= NULL
)
178 SSLerr(SSL_F_SSL23_CONNECT
,SSL_R_SSL23_DOING_SESSION_ID_REUSE
);
183 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
185 /* s->version=TLS1_VERSION; */
186 s
->type
=SSL_ST_CONNECT
;
188 if (s
->init_buf
== NULL
)
190 if ((buf
=BUF_MEM_new()) == NULL
)
195 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
204 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
206 ssl3_init_finished_mac(s
);
208 s
->state
=SSL23_ST_CW_CLNT_HELLO_A
;
209 s
->ctx
->stats
.sess_connect
++;
213 case SSL23_ST_CW_CLNT_HELLO_A
:
214 case SSL23_ST_CW_CLNT_HELLO_B
:
217 ret
=ssl23_client_hello(s
);
218 if (ret
<= 0) goto end
;
219 s
->state
=SSL23_ST_CR_SRVR_HELLO_A
;
224 case SSL23_ST_CR_SRVR_HELLO_A
:
225 case SSL23_ST_CR_SRVR_HELLO_B
:
226 ret
=ssl23_get_server_hello(s
);
227 if (ret
>= 0) cb
=NULL
;
232 SSLerr(SSL_F_SSL23_CONNECT
,SSL_R_UNKNOWN_STATE
);
238 if (s
->debug
) { (void)BIO_flush(s
->wbio
); }
240 if ((cb
!= NULL
) && (s
->state
!= state
))
244 cb(s
,SSL_CB_CONNECT_LOOP
,1);
253 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
257 static int ssl23_no_ssl2_ciphers(SSL
*s
)
260 STACK_OF(SSL_CIPHER
) *ciphers
;
262 ciphers
= SSL_get_ciphers(s
);
263 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++)
265 cipher
= sk_SSL_CIPHER_value(ciphers
, i
);
266 if (cipher
->algorithm_ssl
== SSL_SSLV2
)
272 /* Fill a ClientRandom or ServerRandom field of length len. Returns <= 0
273 * on failure, 1 on success. */
274 int ssl_fill_hello_random(SSL
*s
, int server
, unsigned char *result
, int len
)
280 send_time
= (s
->mode
& SSL_MODE_SEND_SERVERHELLO_TIME
) != 0;
282 send_time
= (s
->mode
& SSL_MODE_SEND_CLIENTHELLO_TIME
) != 0;
285 unsigned long Time
= (unsigned long)time(NULL
);
286 unsigned char *p
= result
;
288 return RAND_pseudo_bytes(p
, len
-4);
291 return RAND_pseudo_bytes(result
, len
);
294 static int ssl23_client_hello(SSL
*s
)
301 int version
= 0, version_major
, version_minor
;
302 #ifndef OPENSSL_NO_COMP
307 unsigned long mask
, options
= s
->options
;
309 ssl2_compat
= (options
& SSL_OP_NO_SSLv2
) ? 0 : 1;
311 if (ssl2_compat
&& ssl23_no_ssl2_ciphers(s
))
315 * SSL_OP_NO_X disables all protocols above X *if* there are
316 * some protocols below X enabled. This is required in order
317 * to maintain "version capability" vector contiguous. So
318 * that if application wants to disable TLS1.0 in favour of
319 * TLS1>=1, it would be insufficient to pass SSL_NO_TLSv1, the
320 * answer is SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2.
322 mask
= SSL_OP_NO_TLSv1_1
|SSL_OP_NO_TLSv1
323 #if !defined(OPENSSL_NO_SSL3)
326 #if !defined(OPENSSL_NO_SSL2)
327 |(ssl2_compat
?SSL_OP_NO_SSLv2
:0)
330 #if !defined(OPENSSL_NO_TLS1_2_CLIENT)
331 version
= TLS1_2_VERSION
;
333 if ((options
& SSL_OP_NO_TLSv1_2
) && (options
& mask
) != mask
)
334 version
= TLS1_1_VERSION
;
336 version
= TLS1_1_VERSION
;
338 mask
&= ~SSL_OP_NO_TLSv1_1
;
339 if ((options
& SSL_OP_NO_TLSv1_1
) && (options
& mask
) != mask
)
340 version
= TLS1_VERSION
;
341 mask
&= ~SSL_OP_NO_TLSv1
;
342 #if !defined(OPENSSL_NO_SSL3)
343 if ((options
& SSL_OP_NO_TLSv1
) && (options
& mask
) != mask
)
344 version
= SSL3_VERSION
;
345 mask
&= ~SSL_OP_NO_SSLv3
;
347 #if !defined(OPENSSL_NO_SSL2)
348 if ((options
& SSL_OP_NO_SSLv3
) && (options
& mask
) != mask
)
349 version
= SSL2_VERSION
;
352 #ifndef OPENSSL_NO_TLSEXT
353 if (version
!= SSL2_VERSION
)
355 /* have to disable SSL 2.0 compatibility if we need TLS extensions */
357 if (s
->tlsext_hostname
!= NULL
)
359 if (s
->tlsext_status_type
!= -1)
361 #ifdef TLSEXT_TYPE_opaque_prf_input
362 if (s
->ctx
->tlsext_opaque_prf_input_callback
!= 0 || s
->tlsext_opaque_prf_input
!= NULL
)
365 if (s
->ctx
->custom_cli_ext_records_count
!= 0)
367 if (s
->ctx
->cli_supp_data_records_count
!= 0)
372 buf
=(unsigned char *)s
->init_buf
->data
;
373 if (s
->state
== SSL23_ST_CW_CLNT_HELLO_A
)
376 /* don't reuse session-id's */
377 if (!ssl_get_new_session(s
,0))
383 p
=s
->s3
->client_random
;
384 if (ssl_fill_hello_random(s
, 0, p
, SSL3_RANDOM_SIZE
) <= 0)
387 if (version
== TLS1_2_VERSION
)
389 version_major
= TLS1_2_VERSION_MAJOR
;
390 version_minor
= TLS1_2_VERSION_MINOR
;
392 else if (tls1_suiteb(s
))
394 SSLerr(SSL_F_SSL23_CLIENT_HELLO
,
395 SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE
);
398 else if (version
== TLS1_1_VERSION
)
400 version_major
= TLS1_1_VERSION_MAJOR
;
401 version_minor
= TLS1_1_VERSION_MINOR
;
403 else if (version
== TLS1_VERSION
)
405 version_major
= TLS1_VERSION_MAJOR
;
406 version_minor
= TLS1_VERSION_MINOR
;
411 SSLerr(SSL_F_SSL23_CLIENT_HELLO
,
412 SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE
);
416 else if (version
== SSL3_VERSION
)
418 version_major
= SSL3_VERSION_MAJOR
;
419 version_minor
= SSL3_VERSION_MINOR
;
421 else if (version
== SSL2_VERSION
)
423 version_major
= SSL2_VERSION_MAJOR
;
424 version_minor
= SSL2_VERSION_MINOR
;
428 SSLerr(SSL_F_SSL23_CLIENT_HELLO
,SSL_R_NO_PROTOCOLS_AVAILABLE
);
432 s
->client_version
= version
;
436 /* create SSL 2.0 compatible Client Hello */
438 /* two byte record header will be written last */
440 p
= d
+ 9; /* leave space for message type, version, individual length fields */
442 *(d
++) = SSL2_MT_CLIENT_HELLO
;
443 *(d
++) = version_major
;
444 *(d
++) = version_minor
;
446 /* Ciphers supported */
447 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),p
,0);
451 SSLerr(SSL_F_SSL23_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
457 /* put in the session-id length (zero since there is no reuse) */
459 s
->session
->session_id_length
=0;
463 if (s
->options
& SSL_OP_NETSCAPE_CHALLENGE_BUG
)
464 ch_len
=SSL2_CHALLENGE_LENGTH
;
466 ch_len
=SSL2_MAX_CHALLENGE_LENGTH
;
468 /* write out sslv2 challenge */
469 /* Note that ch_len must be <= SSL3_RANDOM_SIZE (32),
470 because it is one of SSL2_MAX_CHALLENGE_LENGTH (32)
471 or SSL2_MAX_CHALLENGE_LENGTH (16), but leave the
472 check in for futurproofing */
473 if (SSL3_RANDOM_SIZE
< ch_len
)
478 memset(&(s
->s3
->client_random
[0]),0,SSL3_RANDOM_SIZE
);
479 if (RAND_pseudo_bytes(&(s
->s3
->client_random
[SSL3_RANDOM_SIZE
-i
]),i
) <= 0)
482 memcpy(p
,&(s
->s3
->client_random
[SSL3_RANDOM_SIZE
-i
]),i
);
486 buf
[0]=((i
>>8)&0xff)|0x80;
489 /* number of bytes to write */
493 ssl3_finish_mac(s
,&(buf
[2]),i
);
497 /* create Client Hello in SSL 3.0/TLS 1.0 format */
499 /* do the record header (5 bytes) and handshake message header (4 bytes) last */
502 *(p
++) = version_major
;
503 *(p
++) = version_minor
;
506 memcpy(p
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
507 p
+= SSL3_RANDOM_SIZE
;
509 /* Session ID (zero since there is no reuse) */
512 /* Ciphers supported (using SSL 3.0/TLS 1.0 format) */
513 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]),ssl3_put_cipher_by_char
);
516 SSLerr(SSL_F_SSL23_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
519 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
520 /* Some servers hang if client hello > 256 bytes
521 * as hack workaround chop number of supported ciphers
522 * to keep it well below this if we use TLS v1.2
524 if (TLS1_get_version(s
) >= TLS1_2_VERSION
525 && i
> OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
)
526 i
= OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
& ~1;
532 #ifdef OPENSSL_NO_COMP
535 if ((s
->options
& SSL_OP_NO_COMPRESSION
)
536 || !s
->ctx
->comp_methods
)
539 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
543 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
547 *(p
++)=0; /* Add the NULL method */
549 #ifndef OPENSSL_NO_TLSEXT
551 if (ssl_prepare_clienthello_tlsext(s
) <= 0)
553 SSLerr(SSL_F_SSL23_CLIENT_HELLO
,SSL_R_CLIENTHELLO_TLSEXT
);
556 if ((p
= ssl_add_clienthello_tlsext(s
, p
, buf
+SSL3_RT_MAX_PLAIN_LENGTH
)) == NULL
)
558 SSLerr(SSL_F_SSL23_CLIENT_HELLO
,ERR_R_INTERNAL_ERROR
);
565 /* fill in 4-byte handshake header */
567 *(d
++)=SSL3_MT_CLIENT_HELLO
;
572 if (l
> SSL3_RT_MAX_PLAIN_LENGTH
)
574 SSLerr(SSL_F_SSL23_CLIENT_HELLO
,ERR_R_INTERNAL_ERROR
);
578 /* fill in 5-byte record header */
580 *(d
++) = SSL3_RT_HANDSHAKE
;
581 *(d
++) = version_major
;
582 /* Some servers hang if we use long client hellos
583 * and a record number > TLS 1.0.
585 if (TLS1_get_client_version(s
) > TLS1_VERSION
)
588 *(d
++) = version_minor
;
591 /* number of bytes to write */
595 ssl3_finish_mac(s
,&(buf
[5]), s
->init_num
- 5);
598 s
->state
=SSL23_ST_CW_CLNT_HELLO_B
;
602 /* SSL3_ST_CW_CLNT_HELLO_B */
603 ret
= ssl23_write_bytes(s
);
605 if ((ret
>= 2) && s
->msg_callback
)
607 /* Client Hello has been sent; tell msg_callback */
610 s
->msg_callback(1, SSL2_VERSION
, 0, s
->init_buf
->data
+2, ret
-2, s
, s
->msg_callback_arg
);
613 s
->msg_callback(1, version
, SSL3_RT_HEADER
, s
->init_buf
->data
, 5, s
, s
->msg_callback_arg
);
614 s
->msg_callback(1, version
, SSL3_RT_HANDSHAKE
, s
->init_buf
->data
+5, ret
-5, s
, s
->msg_callback_arg
);
621 static int ssl23_get_server_hello(SSL
*s
)
628 n
=ssl23_read_bytes(s
,7);
630 if (n
!= 7) return(n
);
635 if ((p
[0] & 0x80) && (p
[2] == SSL2_MT_SERVER_HELLO
) &&
636 (p
[5] == 0x00) && (p
[6] == 0x02))
638 #ifdef OPENSSL_NO_SSL2
639 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_PROTOCOL
);
642 /* we are talking sslv2 */
643 /* we need to clean up the SSLv3 setup and put in the
647 if (s
->options
& SSL_OP_NO_SSLv2
)
649 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_PROTOCOL
);
660 if (s
->options
& SSL_OP_NETSCAPE_CHALLENGE_BUG
)
661 ch_len
=SSL2_CHALLENGE_LENGTH
;
663 ch_len
=SSL2_MAX_CHALLENGE_LENGTH
;
665 /* write out sslv2 challenge */
666 /* Note that ch_len must be <= SSL3_RANDOM_SIZE (32), because
667 it is one of SSL2_MAX_CHALLENGE_LENGTH (32) or
668 SSL2_MAX_CHALLENGE_LENGTH (16), but leave the check in for
670 i
=(SSL3_RANDOM_SIZE
< ch_len
)
671 ?SSL3_RANDOM_SIZE
:ch_len
;
672 s
->s2
->challenge_length
=i
;
673 memcpy(s
->s2
->challenge
,
674 &(s
->s3
->client_random
[SSL3_RANDOM_SIZE
-i
]),i
);
676 if (s
->s3
!= NULL
) ssl3_free(s
);
678 if (!BUF_MEM_grow_clean(s
->init_buf
,
679 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER
))
681 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO
,ERR_R_BUF_LIB
);
685 s
->state
=SSL2_ST_GET_SERVER_HELLO_A
;
686 if (!(s
->client_version
== SSL2_VERSION
))
687 /* use special padding (SSL 3.0 draft/RFC 2246, App. E.2) */
688 s
->s2
->ssl2_rollback
=1;
690 /* setup the 7 bytes we have read so we get them from
691 * the sslv2 buffer */
692 s
->rstate
=SSL_ST_READ_HEADER
;
694 s
->packet
= &(s
->s2
->rbuf
[0]);
695 memcpy(s
->packet
,buf
,n
);
699 /* we have already written one */
700 s
->s2
->write_sequence
=1;
702 s
->method
=SSLv2_client_method();
703 s
->handshake_func
=s
->method
->ssl_connect
;
706 else if (p
[1] == SSL3_VERSION_MAJOR
&&
707 p
[2] <= TLS1_2_VERSION_MINOR
&&
708 ((p
[0] == SSL3_RT_HANDSHAKE
&& p
[5] == SSL3_MT_SERVER_HELLO
) ||
709 (p
[0] == SSL3_RT_ALERT
&& p
[3] == 0 && p
[4] == 2)))
711 /* we have sslv3 or tls1 (server hello or alert) */
713 if ((p
[2] == SSL3_VERSION_MINOR
) &&
714 !(s
->options
& SSL_OP_NO_SSLv3
))
719 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO
,
720 SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE
);
724 s
->version
=SSL3_VERSION
;
725 s
->method
=SSLv3_client_method();
727 else if ((p
[2] == TLS1_VERSION_MINOR
) &&
728 !(s
->options
& SSL_OP_NO_TLSv1
))
730 s
->version
=TLS1_VERSION
;
731 s
->method
=TLSv1_client_method();
733 else if ((p
[2] == TLS1_1_VERSION_MINOR
) &&
734 !(s
->options
& SSL_OP_NO_TLSv1_1
))
736 s
->version
=TLS1_1_VERSION
;
737 s
->method
=TLSv1_1_client_method();
739 else if ((p
[2] == TLS1_2_VERSION_MINOR
) &&
740 !(s
->options
& SSL_OP_NO_TLSv1_2
))
742 s
->version
=TLS1_2_VERSION
;
743 s
->method
=TLSv1_2_client_method();
747 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_PROTOCOL
);
751 if (p
[0] == SSL3_RT_ALERT
&& p
[5] != SSL3_AL_WARNING
)
755 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
758 if (s
->info_callback
!= NULL
)
760 else if (s
->ctx
->info_callback
!= NULL
)
761 cb
=s
->ctx
->info_callback
;
767 cb(s
,SSL_CB_READ_ALERT
,j
);
772 s
->msg_callback(0, s
->version
, SSL3_RT_HEADER
, p
, 5, s
, s
->msg_callback_arg
);
773 s
->msg_callback(0, s
->version
, SSL3_RT_ALERT
, p
+5, 2, s
, s
->msg_callback_arg
);
776 s
->rwstate
=SSL_NOTHING
;
777 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO
,SSL_AD_REASON_OFFSET
+p
[6]);
781 if (!ssl_init_wbio_buffer(s
,1)) goto err
;
783 /* we are in this state */
784 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
786 /* put the 7 bytes we have read into the input buffer
788 s
->rstate
=SSL_ST_READ_HEADER
;
790 if (s
->s3
->rbuf
.buf
== NULL
)
791 if (!ssl3_setup_read_buffer(s
))
793 s
->packet
= &(s
->s3
->rbuf
.buf
[0]);
794 memcpy(s
->packet
,buf
,n
);
796 s
->s3
->rbuf
.offset
=0;
798 s
->handshake_func
=s
->method
->ssl_connect
;
802 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO
,SSL_R_UNKNOWN_PROTOCOL
);
807 /* Since, if we are sending a ssl23 client hello, we are not
808 * reusing a session-id */
809 if (!ssl_get_new_session(s
,0))
812 return(SSL_connect(s
));