+++ /dev/null
-/* 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
-#ifndef OPENSSL_NO_SSL3
- if (ver == SSL3_VERSION)
- return(SSLv3_client_method());
-#endif
- 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);
-
- 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);
-
- /* s->version=TLS1_VERSION; */
- s->type=SSL_ST_CONNECT;
-
- if (s->init_buf == NULL)
- {
- if ((buf=BUF_MEM_new()) == NULL)
- {
- ret= -1;
- goto end;
- }
- if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
- {
- ret= -1;
- goto end;
- }
- s->init_buf=buf;
- buf=NULL;
- }
-
- if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
-
- ssl3_init_finished_mac(s);
-
- s->state=SSL23_ST_CW_CLNT_HELLO_A;
- s->ctx->stats.sess_connect++;
- s->init_num=0;
- break;
-
- case SSL23_ST_CW_CLNT_HELLO_A:
- case SSL23_ST_CW_CLNT_HELLO_B:
-
- s->shutdown=0;
- ret=ssl23_client_hello(s);
- if (ret <= 0) goto end;
- s->state=SSL23_ST_CR_SRVR_HELLO_A;
- s->init_num=0;
-
- break;
-
- case SSL23_ST_CR_SRVR_HELLO_A:
- case SSL23_ST_CR_SRVR_HELLO_B:
- ret=ssl23_get_server_hello(s);
- if (ret >= 0) cb=NULL;
- goto end;
- /* break; */
-
- default:
- SSLerr(SSL_F_SSL23_CONNECT,SSL_R_UNKNOWN_STATE);
- ret= -1;
- goto end;
- /* break; */
- }
-
- if (s->debug) { (void)BIO_flush(s->wbio); }
-
- if ((cb != NULL) && (s->state != state))
- {
- new_state=s->state;
- s->state=state;
- cb(s,SSL_CB_CONNECT_LOOP,1);
- s->state=new_state;
- }
- }
-end:
- s->in_handshake--;
- if (buf != NULL)
- BUF_MEM_free(buf);
- if (cb != NULL)
- cb(s,SSL_CB_CONNECT_EXIT,ret);
- return(ret);
- }
-
-static int ssl23_no_ssl2_ciphers(SSL *s)
- {
- 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;
- }
- 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)
- send_time = (s->mode & SSL_MODE_SEND_SERVERHELLO_TIME) != 0;
- else
- send_time = (s->mode & SSL_MODE_SEND_CLIENTHELLO_TIME) != 0;
- if (send_time)
- {
- unsigned long Time = (unsigned long)time(NULL);
- unsigned char *p = result;
- l2n(Time, p);
- return RAND_pseudo_bytes(p, len-4);
- }
- else
- 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
- }
-#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 (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_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) */
-
-#ifndef OPENSSL_NO_SSL3
- 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
-#endif
- 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;
- }
-
- /* ensure that TLS_MAX_VERSION is up-to-date */
- OPENSSL_assert(s->version <= TLS_MAX_VERSION);
-
- 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_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);
- }
projects / cassiopeia.git / blobdiff