038bec784e
Removed prior audit proof logic - audit proof support was implemented using the generic TLS extension API
Tests exercising the new supplemental data registration and callback api can be found in ssltest.c.
Implemented changes to s_server and s_client to exercise supplemental data callbacks via the -auth argument, as well as additional flags to exercise supplemental data being sent only during renegotiation.
(cherry picked from commit 36086186a9)
Conflicts:
Configure
apps/s_client.c
apps/s_server.c
ssl/ssl.h
ssl/ssl3.h
ssl/ssltest.c
815 lines
22 KiB
C
815 lines
22 KiB
C
/* ssl/s23_clnt.c */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* openssl-core@openssl.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "ssl_locl.h"
|
|
#include <openssl/buffer.h>
|
|
#include <openssl/rand.h>
|
|
#include <openssl/objects.h>
|
|
#include <openssl/evp.h>
|
|
|
|
static const SSL_METHOD *ssl23_get_client_method(int ver);
|
|
static int ssl23_client_hello(SSL *s);
|
|
static int ssl23_get_server_hello(SSL *s);
|
|
static const SSL_METHOD *ssl23_get_client_method(int ver)
|
|
{
|
|
#ifndef OPENSSL_NO_SSL2
|
|
if (ver == SSL2_VERSION)
|
|
return(SSLv2_client_method());
|
|
#endif
|
|
if (ver == SSL3_VERSION)
|
|
return(SSLv3_client_method());
|
|
else if (ver == TLS1_VERSION)
|
|
return(TLSv1_client_method());
|
|
else if (ver == TLS1_1_VERSION)
|
|
return(TLSv1_1_client_method());
|
|
else if (ver == TLS1_2_VERSION)
|
|
return(TLSv1_2_client_method());
|
|
else
|
|
return(NULL);
|
|
}
|
|
|
|
IMPLEMENT_ssl23_meth_func(SSLv23_client_method,
|
|
ssl_undefined_function,
|
|
ssl23_connect,
|
|
ssl23_get_client_method)
|
|
|
|
int ssl23_connect(SSL *s)
|
|
{
|
|
BUF_MEM *buf=NULL;
|
|
unsigned long Time=(unsigned long)time(NULL);
|
|
void (*cb)(const SSL *ssl,int type,int val)=NULL;
|
|
int ret= -1;
|
|
int new_state,state;
|
|
|
|
RAND_add(&Time,sizeof(Time),0);
|
|
ERR_clear_error();
|
|
clear_sys_error();
|
|
|
|
if (s->info_callback != NULL)
|
|
cb=s->info_callback;
|
|
else if (s->ctx->info_callback != NULL)
|
|
cb=s->ctx->info_callback;
|
|
|
|
s->in_handshake++;
|
|
if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
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|
|
|
for (;;)
|
|
{
|
|
state=s->state;
|
|
|
|
switch(s->state)
|
|
{
|
|
case SSL_ST_BEFORE:
|
|
case SSL_ST_CONNECT:
|
|
case SSL_ST_BEFORE|SSL_ST_CONNECT:
|
|
case SSL_ST_OK|SSL_ST_CONNECT:
|
|
|
|
if (s->session != NULL)
|
|
{
|
|
SSLerr(SSL_F_SSL23_CONNECT,SSL_R_SSL23_DOING_SESSION_ID_REUSE);
|
|
ret= -1;
|
|
goto end;
|
|
}
|
|
s->server=0;
|
|
if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
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|
|
|
/* s->version=TLS1_VERSION; */
|
|
s->type=SSL_ST_CONNECT;
|
|
|
|
if (s->init_buf == NULL)
|
|
{
|
|
if ((buf=BUF_MEM_new()) == NULL)
|
|
{
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|
ret= -1;
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|
goto end;
|
|
}
|
|
if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
|
|
{
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|
ret= -1;
|
|
goto end;
|
|
}
|
|
s->init_buf=buf;
|
|
buf=NULL;
|
|
}
|
|
|
|
if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
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|
|
|
ssl3_init_finished_mac(s);
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|
|
|
s->state=SSL23_ST_CW_CLNT_HELLO_A;
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|
s->ctx->stats.sess_connect++;
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|
s->init_num=0;
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|
break;
|
|
|
|
case SSL23_ST_CW_CLNT_HELLO_A:
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|
case SSL23_ST_CW_CLNT_HELLO_B:
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s->shutdown=0;
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ret=ssl23_client_hello(s);
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if (ret <= 0) goto end;
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s->state=SSL23_ST_CR_SRVR_HELLO_A;
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s->init_num=0;
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|
break;
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|
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case SSL23_ST_CR_SRVR_HELLO_A:
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case SSL23_ST_CR_SRVR_HELLO_B:
|
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ret=ssl23_get_server_hello(s);
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if (ret >= 0) cb=NULL;
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goto end;
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/* break; */
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|
default:
|
|
SSLerr(SSL_F_SSL23_CONNECT,SSL_R_UNKNOWN_STATE);
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|
ret= -1;
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|
goto end;
|
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/* break; */
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|
}
|
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|
|
if (s->debug) { (void)BIO_flush(s->wbio); }
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|
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if ((cb != NULL) && (s->state != state))
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{
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new_state=s->state;
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|
s->state=state;
|
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cb(s,SSL_CB_CONNECT_LOOP,1);
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|
s->state=new_state;
|
|
}
|
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}
|
|
end:
|
|
s->in_handshake--;
|
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if (buf != NULL)
|
|
BUF_MEM_free(buf);
|
|
if (cb != NULL)
|
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cb(s,SSL_CB_CONNECT_EXIT,ret);
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return(ret);
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}
|
|
|
|
static int ssl23_no_ssl2_ciphers(SSL *s)
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{
|
|
SSL_CIPHER *cipher;
|
|
STACK_OF(SSL_CIPHER) *ciphers;
|
|
int i;
|
|
ciphers = SSL_get_ciphers(s);
|
|
for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++)
|
|
{
|
|
cipher = sk_SSL_CIPHER_value(ciphers, i);
|
|
if (cipher->algorithm_ssl == SSL_SSLV2)
|
|
return 0;
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|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Fill a ClientRandom or ServerRandom field of length len. Returns <= 0
|
|
* on failure, 1 on success. */
|
|
int ssl_fill_hello_random(SSL *s, int server, unsigned char *result, int len)
|
|
{
|
|
int send_time = 0;
|
|
if (len < 4)
|
|
return 0;
|
|
if (server)
|
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send_time = (s->mode & SSL_MODE_SEND_SERVERHELLO_TIME) != 0;
|
|
else
|
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send_time = (s->mode & SSL_MODE_SEND_CLIENTHELLO_TIME) != 0;
|
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if (send_time)
|
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{
|
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unsigned long Time = (unsigned long)time(NULL);
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unsigned char *p = result;
|
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l2n(Time, p);
|
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return RAND_pseudo_bytes(p, len-4);
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}
|
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else
|
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return RAND_pseudo_bytes(result, len);
|
|
}
|
|
|
|
static int ssl23_client_hello(SSL *s)
|
|
{
|
|
unsigned char *buf;
|
|
unsigned char *p,*d;
|
|
int i,ch_len;
|
|
unsigned long l;
|
|
int ssl2_compat;
|
|
int version = 0, version_major, version_minor;
|
|
#ifndef OPENSSL_NO_COMP
|
|
int j;
|
|
SSL_COMP *comp;
|
|
#endif
|
|
int ret;
|
|
unsigned long mask, options = s->options;
|
|
|
|
ssl2_compat = (options & SSL_OP_NO_SSLv2) ? 0 : 1;
|
|
|
|
if (ssl2_compat && ssl23_no_ssl2_ciphers(s))
|
|
ssl2_compat = 0;
|
|
|
|
/*
|
|
* SSL_OP_NO_X disables all protocols above X *if* there are
|
|
* some protocols below X enabled. This is required in order
|
|
* to maintain "version capability" vector contiguous. So
|
|
* that if application wants to disable TLS1.0 in favour of
|
|
* TLS1>=1, it would be insufficient to pass SSL_NO_TLSv1, the
|
|
* answer is SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2.
|
|
*/
|
|
mask = SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1
|
|
#if !defined(OPENSSL_NO_SSL3)
|
|
|SSL_OP_NO_SSLv3
|
|
#endif
|
|
#if !defined(OPENSSL_NO_SSL2)
|
|
|(ssl2_compat?SSL_OP_NO_SSLv2:0)
|
|
#endif
|
|
;
|
|
#if !defined(OPENSSL_NO_TLS1_2_CLIENT)
|
|
version = TLS1_2_VERSION;
|
|
|
|
if ((options & SSL_OP_NO_TLSv1_2) && (options & mask) != mask)
|
|
version = TLS1_1_VERSION;
|
|
#else
|
|
version = TLS1_1_VERSION;
|
|
#endif
|
|
mask &= ~SSL_OP_NO_TLSv1_1;
|
|
if ((options & SSL_OP_NO_TLSv1_1) && (options & mask) != mask)
|
|
version = TLS1_VERSION;
|
|
mask &= ~SSL_OP_NO_TLSv1;
|
|
#if !defined(OPENSSL_NO_SSL3)
|
|
if ((options & SSL_OP_NO_TLSv1) && (options & mask) != mask)
|
|
version = SSL3_VERSION;
|
|
mask &= ~SSL_OP_NO_SSLv3;
|
|
#endif
|
|
#if !defined(OPENSSL_NO_SSL2)
|
|
if ((options & SSL_OP_NO_SSLv3) && (options & mask) != mask)
|
|
version = SSL2_VERSION;
|
|
#endif
|
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
if (version != SSL2_VERSION)
|
|
{
|
|
/* have to disable SSL 2.0 compatibility if we need TLS extensions */
|
|
|
|
if (s->tlsext_hostname != NULL)
|
|
ssl2_compat = 0;
|
|
if (s->tlsext_status_type != -1)
|
|
ssl2_compat = 0;
|
|
#ifdef TLSEXT_TYPE_opaque_prf_input
|
|
if (s->ctx->tlsext_opaque_prf_input_callback != 0 || s->tlsext_opaque_prf_input != NULL)
|
|
ssl2_compat = 0;
|
|
#endif
|
|
if (s->ctx->custom_cli_ext_records_count != 0)
|
|
ssl2_compat = 0;
|
|
if (s->ctx->cli_supp_data_records_count != 0)
|
|
ssl2_compat = 0;
|
|
}
|
|
#endif
|
|
|
|
buf=(unsigned char *)s->init_buf->data;
|
|
if (s->state == SSL23_ST_CW_CLNT_HELLO_A)
|
|
{
|
|
#if 0
|
|
/* don't reuse session-id's */
|
|
if (!ssl_get_new_session(s,0))
|
|
{
|
|
return(-1);
|
|
}
|
|
#endif
|
|
|
|
p=s->s3->client_random;
|
|
if (ssl_fill_hello_random(s, 0, p, SSL3_RANDOM_SIZE) <= 0)
|
|
return -1;
|
|
|
|
if (version == TLS1_2_VERSION)
|
|
{
|
|
version_major = TLS1_2_VERSION_MAJOR;
|
|
version_minor = TLS1_2_VERSION_MINOR;
|
|
}
|
|
else if (tls1_suiteb(s))
|
|
{
|
|
SSLerr(SSL_F_SSL23_CLIENT_HELLO,
|
|
SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
|
|
return -1;
|
|
}
|
|
else if (version == TLS1_1_VERSION)
|
|
{
|
|
version_major = TLS1_1_VERSION_MAJOR;
|
|
version_minor = TLS1_1_VERSION_MINOR;
|
|
}
|
|
else if (version == TLS1_VERSION)
|
|
{
|
|
version_major = TLS1_VERSION_MAJOR;
|
|
version_minor = TLS1_VERSION_MINOR;
|
|
}
|
|
#ifdef OPENSSL_FIPS
|
|
else if(FIPS_mode())
|
|
{
|
|
SSLerr(SSL_F_SSL23_CLIENT_HELLO,
|
|
SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
|
|
return -1;
|
|
}
|
|
#endif
|
|
else if (version == SSL3_VERSION)
|
|
{
|
|
version_major = SSL3_VERSION_MAJOR;
|
|
version_minor = SSL3_VERSION_MINOR;
|
|
}
|
|
else if (version == SSL2_VERSION)
|
|
{
|
|
version_major = SSL2_VERSION_MAJOR;
|
|
version_minor = SSL2_VERSION_MINOR;
|
|
}
|
|
else
|
|
{
|
|
SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_PROTOCOLS_AVAILABLE);
|
|
return(-1);
|
|
}
|
|
|
|
s->client_version = version;
|
|
|
|
if (ssl2_compat)
|
|
{
|
|
/* create SSL 2.0 compatible Client Hello */
|
|
|
|
/* two byte record header will be written last */
|
|
d = &(buf[2]);
|
|
p = d + 9; /* leave space for message type, version, individual length fields */
|
|
|
|
*(d++) = SSL2_MT_CLIENT_HELLO;
|
|
*(d++) = version_major;
|
|
*(d++) = version_minor;
|
|
|
|
/* Ciphers supported */
|
|
i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),p,0);
|
|
if (i == 0)
|
|
{
|
|
/* no ciphers */
|
|
SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
|
|
return -1;
|
|
}
|
|
s2n(i,d);
|
|
p+=i;
|
|
|
|
/* put in the session-id length (zero since there is no reuse) */
|
|
#if 0
|
|
s->session->session_id_length=0;
|
|
#endif
|
|
s2n(0,d);
|
|
|
|
if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
|
|
ch_len=SSL2_CHALLENGE_LENGTH;
|
|
else
|
|
ch_len=SSL2_MAX_CHALLENGE_LENGTH;
|
|
|
|
/* write out sslv2 challenge */
|
|
/* Note that ch_len must be <= SSL3_RANDOM_SIZE (32),
|
|
because it is one of SSL2_MAX_CHALLENGE_LENGTH (32)
|
|
or SSL2_MAX_CHALLENGE_LENGTH (16), but leave the
|
|
check in for futurproofing */
|
|
if (SSL3_RANDOM_SIZE < ch_len)
|
|
i=SSL3_RANDOM_SIZE;
|
|
else
|
|
i=ch_len;
|
|
s2n(i,d);
|
|
memset(&(s->s3->client_random[0]),0,SSL3_RANDOM_SIZE);
|
|
if (RAND_pseudo_bytes(&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i) <= 0)
|
|
return -1;
|
|
|
|
memcpy(p,&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
|
|
p+=i;
|
|
|
|
i= p- &(buf[2]);
|
|
buf[0]=((i>>8)&0xff)|0x80;
|
|
buf[1]=(i&0xff);
|
|
|
|
/* number of bytes to write */
|
|
s->init_num=i+2;
|
|
s->init_off=0;
|
|
|
|
ssl3_finish_mac(s,&(buf[2]),i);
|
|
}
|
|
else
|
|
{
|
|
/* create Client Hello in SSL 3.0/TLS 1.0 format */
|
|
|
|
/* do the record header (5 bytes) and handshake message header (4 bytes) last */
|
|
d = p = &(buf[9]);
|
|
|
|
*(p++) = version_major;
|
|
*(p++) = version_minor;
|
|
|
|
/* Random stuff */
|
|
memcpy(p, s->s3->client_random, SSL3_RANDOM_SIZE);
|
|
p += SSL3_RANDOM_SIZE;
|
|
|
|
/* Session ID (zero since there is no reuse) */
|
|
*(p++) = 0;
|
|
|
|
/* Ciphers supported (using SSL 3.0/TLS 1.0 format) */
|
|
i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),ssl3_put_cipher_by_char);
|
|
if (i == 0)
|
|
{
|
|
SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
|
|
return -1;
|
|
}
|
|
#ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
|
|
/* Some servers hang if client hello > 256 bytes
|
|
* as hack workaround chop number of supported ciphers
|
|
* to keep it well below this if we use TLS v1.2
|
|
*/
|
|
if (TLS1_get_version(s) >= TLS1_2_VERSION
|
|
&& i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
|
|
i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
|
|
#endif
|
|
s2n(i,p);
|
|
p+=i;
|
|
|
|
/* COMPRESSION */
|
|
#ifdef OPENSSL_NO_COMP
|
|
*(p++)=1;
|
|
#else
|
|
if ((s->options & SSL_OP_NO_COMPRESSION)
|
|
|| !s->ctx->comp_methods)
|
|
j=0;
|
|
else
|
|
j=sk_SSL_COMP_num(s->ctx->comp_methods);
|
|
*(p++)=1+j;
|
|
for (i=0; i<j; i++)
|
|
{
|
|
comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
|
|
*(p++)=comp->id;
|
|
}
|
|
#endif
|
|
*(p++)=0; /* Add the NULL method */
|
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
/* TLS extensions*/
|
|
if (ssl_prepare_clienthello_tlsext(s) <= 0)
|
|
{
|
|
SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
|
|
return -1;
|
|
}
|
|
if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
|
|
{
|
|
SSLerr(SSL_F_SSL23_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
l = p-d;
|
|
|
|
/* fill in 4-byte handshake header */
|
|
d=&(buf[5]);
|
|
*(d++)=SSL3_MT_CLIENT_HELLO;
|
|
l2n3(l,d);
|
|
|
|
l += 4;
|
|
|
|
if (l > SSL3_RT_MAX_PLAIN_LENGTH)
|
|
{
|
|
SSLerr(SSL_F_SSL23_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
|
|
return -1;
|
|
}
|
|
|
|
/* fill in 5-byte record header */
|
|
d=buf;
|
|
*(d++) = SSL3_RT_HANDSHAKE;
|
|
*(d++) = version_major;
|
|
/* Some servers hang if we use long client hellos
|
|
* and a record number > TLS 1.0.
|
|
*/
|
|
if (TLS1_get_client_version(s) > TLS1_VERSION)
|
|
*(d++) = 1;
|
|
else
|
|
*(d++) = version_minor;
|
|
s2n((int)l,d);
|
|
|
|
/* number of bytes to write */
|
|
s->init_num=p-buf;
|
|
s->init_off=0;
|
|
|
|
ssl3_finish_mac(s,&(buf[5]), s->init_num - 5);
|
|
}
|
|
|
|
s->state=SSL23_ST_CW_CLNT_HELLO_B;
|
|
s->init_off=0;
|
|
}
|
|
|
|
/* SSL3_ST_CW_CLNT_HELLO_B */
|
|
ret = ssl23_write_bytes(s);
|
|
|
|
if ((ret >= 2) && s->msg_callback)
|
|
{
|
|
/* Client Hello has been sent; tell msg_callback */
|
|
|
|
if (ssl2_compat)
|
|
s->msg_callback(1, SSL2_VERSION, 0, s->init_buf->data+2, ret-2, s, s->msg_callback_arg);
|
|
else
|
|
{
|
|
s->msg_callback(1, version, SSL3_RT_HEADER, s->init_buf->data, 5, s, s->msg_callback_arg);
|
|
s->msg_callback(1, version, SSL3_RT_HANDSHAKE, s->init_buf->data+5, ret-5, s, s->msg_callback_arg);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ssl23_get_server_hello(SSL *s)
|
|
{
|
|
char buf[8];
|
|
unsigned char *p;
|
|
int i;
|
|
int n;
|
|
|
|
n=ssl23_read_bytes(s,7);
|
|
|
|
if (n != 7) return(n);
|
|
p=s->packet;
|
|
|
|
memcpy(buf,p,n);
|
|
|
|
if ((p[0] & 0x80) && (p[2] == SSL2_MT_SERVER_HELLO) &&
|
|
(p[5] == 0x00) && (p[6] == 0x02))
|
|
{
|
|
#ifdef OPENSSL_NO_SSL2
|
|
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
|
|
goto err;
|
|
#else
|
|
/* we are talking sslv2 */
|
|
/* we need to clean up the SSLv3 setup and put in the
|
|
* sslv2 stuff. */
|
|
int ch_len;
|
|
|
|
if (s->options & SSL_OP_NO_SSLv2)
|
|
{
|
|
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
|
|
goto err;
|
|
}
|
|
if (s->s2 == NULL)
|
|
{
|
|
if (!ssl2_new(s))
|
|
goto err;
|
|
}
|
|
else
|
|
ssl2_clear(s);
|
|
|
|
if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
|
|
ch_len=SSL2_CHALLENGE_LENGTH;
|
|
else
|
|
ch_len=SSL2_MAX_CHALLENGE_LENGTH;
|
|
|
|
/* write out sslv2 challenge */
|
|
/* Note that ch_len must be <= SSL3_RANDOM_SIZE (32), because
|
|
it is one of SSL2_MAX_CHALLENGE_LENGTH (32) or
|
|
SSL2_MAX_CHALLENGE_LENGTH (16), but leave the check in for
|
|
futurproofing */
|
|
i=(SSL3_RANDOM_SIZE < ch_len)
|
|
?SSL3_RANDOM_SIZE:ch_len;
|
|
s->s2->challenge_length=i;
|
|
memcpy(s->s2->challenge,
|
|
&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
|
|
|
|
if (s->s3 != NULL) ssl3_free(s);
|
|
|
|
if (!BUF_MEM_grow_clean(s->init_buf,
|
|
SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
|
|
{
|
|
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB);
|
|
goto err;
|
|
}
|
|
|
|
s->state=SSL2_ST_GET_SERVER_HELLO_A;
|
|
if (!(s->client_version == SSL2_VERSION))
|
|
/* use special padding (SSL 3.0 draft/RFC 2246, App. E.2) */
|
|
s->s2->ssl2_rollback=1;
|
|
|
|
/* setup the 7 bytes we have read so we get them from
|
|
* the sslv2 buffer */
|
|
s->rstate=SSL_ST_READ_HEADER;
|
|
s->packet_length=n;
|
|
s->packet= &(s->s2->rbuf[0]);
|
|
memcpy(s->packet,buf,n);
|
|
s->s2->rbuf_left=n;
|
|
s->s2->rbuf_offs=0;
|
|
|
|
/* we have already written one */
|
|
s->s2->write_sequence=1;
|
|
|
|
s->method=SSLv2_client_method();
|
|
s->handshake_func=s->method->ssl_connect;
|
|
#endif
|
|
}
|
|
else if (p[1] == SSL3_VERSION_MAJOR &&
|
|
p[2] <= TLS1_2_VERSION_MINOR &&
|
|
((p[0] == SSL3_RT_HANDSHAKE && p[5] == SSL3_MT_SERVER_HELLO) ||
|
|
(p[0] == SSL3_RT_ALERT && p[3] == 0 && p[4] == 2)))
|
|
{
|
|
/* we have sslv3 or tls1 (server hello or alert) */
|
|
|
|
if ((p[2] == SSL3_VERSION_MINOR) &&
|
|
!(s->options & SSL_OP_NO_SSLv3))
|
|
{
|
|
#ifdef OPENSSL_FIPS
|
|
if(FIPS_mode())
|
|
{
|
|
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,
|
|
SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
|
|
goto err;
|
|
}
|
|
#endif
|
|
s->version=SSL3_VERSION;
|
|
s->method=SSLv3_client_method();
|
|
}
|
|
else if ((p[2] == TLS1_VERSION_MINOR) &&
|
|
!(s->options & SSL_OP_NO_TLSv1))
|
|
{
|
|
s->version=TLS1_VERSION;
|
|
s->method=TLSv1_client_method();
|
|
}
|
|
else if ((p[2] == TLS1_1_VERSION_MINOR) &&
|
|
!(s->options & SSL_OP_NO_TLSv1_1))
|
|
{
|
|
s->version=TLS1_1_VERSION;
|
|
s->method=TLSv1_1_client_method();
|
|
}
|
|
else if ((p[2] == TLS1_2_VERSION_MINOR) &&
|
|
!(s->options & SSL_OP_NO_TLSv1_2))
|
|
{
|
|
s->version=TLS1_2_VERSION;
|
|
s->method=TLSv1_2_client_method();
|
|
}
|
|
else
|
|
{
|
|
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
|
|
goto err;
|
|
}
|
|
|
|
if (p[0] == SSL3_RT_ALERT && p[5] != SSL3_AL_WARNING)
|
|
{
|
|
/* fatal alert */
|
|
|
|
void (*cb)(const SSL *ssl,int type,int val)=NULL;
|
|
int j;
|
|
|
|
if (s->info_callback != NULL)
|
|
cb=s->info_callback;
|
|
else if (s->ctx->info_callback != NULL)
|
|
cb=s->ctx->info_callback;
|
|
|
|
i=p[5];
|
|
if (cb != NULL)
|
|
{
|
|
j=(i<<8)|p[6];
|
|
cb(s,SSL_CB_READ_ALERT,j);
|
|
}
|
|
|
|
if (s->msg_callback)
|
|
{
|
|
s->msg_callback(0, s->version, SSL3_RT_HEADER, p, 5, s, s->msg_callback_arg);
|
|
s->msg_callback(0, s->version, SSL3_RT_ALERT, p+5, 2, s, s->msg_callback_arg);
|
|
}
|
|
|
|
s->rwstate=SSL_NOTHING;
|
|
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_AD_REASON_OFFSET+p[6]);
|
|
goto err;
|
|
}
|
|
|
|
if (!ssl_init_wbio_buffer(s,1)) goto err;
|
|
|
|
/* we are in this state */
|
|
s->state=SSL3_ST_CR_SRVR_HELLO_A;
|
|
|
|
/* put the 7 bytes we have read into the input buffer
|
|
* for SSLv3 */
|
|
s->rstate=SSL_ST_READ_HEADER;
|
|
s->packet_length=n;
|
|
if (s->s3->rbuf.buf == NULL)
|
|
if (!ssl3_setup_read_buffer(s))
|
|
goto err;
|
|
s->packet= &(s->s3->rbuf.buf[0]);
|
|
memcpy(s->packet,buf,n);
|
|
s->s3->rbuf.left=n;
|
|
s->s3->rbuf.offset=0;
|
|
|
|
s->handshake_func=s->method->ssl_connect;
|
|
}
|
|
else
|
|
{
|
|
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNKNOWN_PROTOCOL);
|
|
goto err;
|
|
}
|
|
s->init_num=0;
|
|
|
|
/* Since, if we are sending a ssl23 client hello, we are not
|
|
* reusing a session-id */
|
|
if (!ssl_get_new_session(s,0))
|
|
goto err;
|
|
|
|
return(SSL_connect(s));
|
|
err:
|
|
return(-1);
|
|
}
|