Delete bundled copy of OpenSSL and replace with README.

openssl/ssl/s23_clnt.c

Index: openssl/ssl/s23_clnt.c
diff --git a/openssl/ssl/s23_clnt.c b/openssl/ssl/s23_clnt.c
deleted file mode 100644
index 750d208a8669003b1e006db7103722dbf61aa55e..0000000000000000000000000000000000000000
--- a/openssl/ssl/s23_clnt.c
+++ /dev/null
@@ -1,792 +0,0 @@
-/* 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); 
-
-	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;
-	}
-
-static int ssl23_client_hello(SSL *s)
-	{
-	unsigned char *buf;
-	unsigned char *p,*d;
-	int i,ch_len;
-	unsigned long Time,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;
-		Time=(unsigned long)time(NULL);		/* Time */
-		l2n(Time,p);
-		if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 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. Note: the final argument to
-			 * ssl_add_clienthello_tlsext below depends on the size
-			 * of this prefix. */
-			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;
-				}
-			/* The buffer includes the 5 byte record header, so
-			 * subtract it to compute hlen for
-			 * ssl_add_clienthello_tlsext. */
-			if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH, p-buf-5)) == 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) */
-
-		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_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 (!s->session_creation_enabled)
-		{
-		if (!(s->client_version == SSL2_VERSION))
-			ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
-		SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_SESSION_MAY_NOT_BE_CREATED);
-		goto err;
-		}
-	if (!ssl_get_new_session(s,0))
-		goto err;
-
-	return(SSL_connect(s));
-err:
-	return(-1);
-	}