Initial import

1 files changed, 599 insertions, 0 deletions

diff --git a/openssl/ssl/s23_srvr.c b/openssl/ssl/s23_srvr.c
new file mode 100644
index 00000000..e22879c8
--- /dev/null
+++ b/openssl/ssl/s23_srvr.c
@@ -0,0 +1,599 @@
+/* ssl/s23_srvr.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_server_method(int ver);
+int ssl23_get_client_hello(SSL *s);
+static const SSL_METHOD *ssl23_get_server_method(int ver)
+	{
+#ifndef OPENSSL_NO_SSL2
+	if (ver == SSL2_VERSION)
+		return(SSLv2_server_method());
+#endif
+	if (ver == SSL3_VERSION)
+		return(SSLv3_server_method());
+	else if (ver == TLS1_VERSION)
+		return(TLSv1_server_method());
+	else
+		return(NULL);
+	}
+
+IMPLEMENT_ssl23_meth_func(SSLv23_server_method,
+			ssl23_accept,
+			ssl_undefined_function,
+			ssl23_get_server_method)
+
+int ssl23_accept(SSL *s)
+	{
+	BUF_MEM *buf;
+	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_ACCEPT:
+		case SSL_ST_BEFORE|SSL_ST_ACCEPT:
+		case SSL_ST_OK|SSL_ST_ACCEPT:
+
+			s->server=1;
+			if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
+
+			/* s->version=SSL3_VERSION; */
+			s->type=SSL_ST_ACCEPT;
+
+			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;
+				}
+
+			ssl3_init_finished_mac(s);
+
+			s->state=SSL23_ST_SR_CLNT_HELLO_A;
+			s->ctx->stats.sess_accept++;
+			s->init_num=0;
+			break;
+
+		case SSL23_ST_SR_CLNT_HELLO_A:
+		case SSL23_ST_SR_CLNT_HELLO_B:
+
+			s->shutdown=0;
+			ret=ssl23_get_client_hello(s);
+			if (ret >= 0) cb=NULL;
+			goto end;
+			/* break; */
+
+		default:
+			SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE);
+			ret= -1;
+			goto end;
+			/* break; */
+			}
+
+		if ((cb != NULL) && (s->state != state))
+			{
+			new_state=s->state;
+			s->state=state;
+			cb(s,SSL_CB_ACCEPT_LOOP,1);
+			s->state=new_state;
+			}
+		}
+end:
+	s->in_handshake--;
+	if (cb != NULL)
+		cb(s,SSL_CB_ACCEPT_EXIT,ret);
+	return(ret);
+	}
+
+
+int ssl23_get_client_hello(SSL *s)
+	{
+	char buf_space[11]; /* Request this many bytes in initial read.
+	                     * We can detect SSL 3.0/TLS 1.0 Client Hellos
+	                     * ('type == 3') correctly only when the following
+	                     * is in a single record, which is not guaranteed by
+	                     * the protocol specification:
+	                     * Byte  Content
+	                     *  0     type            \
+	                     *  1/2   version          > record header
+	                     *  3/4   length          /
+	                     *  5     msg_type        \
+	                     *  6-8   length           > Client Hello message
+	                     *  9/10  client_version  /
+	                     */
+	char *buf= &(buf_space[0]);
+	unsigned char *p,*d,*d_len,*dd;
+	unsigned int i;
+	unsigned int csl,sil,cl;
+	int n=0,j;
+	int type=0;
+	int v[2];
+
+	if (s->state ==	SSL23_ST_SR_CLNT_HELLO_A)
+		{
+		/* read the initial header */
+		v[0]=v[1]=0;
+
+		if (!ssl3_setup_buffers(s)) goto err;
+
+		n=ssl23_read_bytes(s, sizeof buf_space);
+		if (n != sizeof buf_space) return(n); /* n == -1 || n == 0 */
+
+		p=s->packet;
+
+		memcpy(buf,p,n);
+
+		if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO))
+			{
+			/*
+			 * SSLv2 header
+			 */
+			if ((p[3] == 0x00) && (p[4] == 0x02))
+				{
+				v[0]=p[3]; v[1]=p[4];
+				/* SSLv2 */
+				if (!(s->options & SSL_OP_NO_SSLv2))
+					type=1;
+				}
+			else if (p[3] == SSL3_VERSION_MAJOR)
+				{
+				v[0]=p[3]; v[1]=p[4];
+				/* SSLv3/TLSv1 */
+				if (p[4] >= TLS1_VERSION_MINOR)
+					{
+					if (!(s->options & SSL_OP_NO_TLSv1))
+						{
+						s->version=TLS1_VERSION;
+						/* type=2; */ /* done later to survive restarts */
+						s->state=SSL23_ST_SR_CLNT_HELLO_B;
+						}
+					else if (!(s->options & SSL_OP_NO_SSLv3))
+						{
+						s->version=SSL3_VERSION;
+						/* type=2; */
+						s->state=SSL23_ST_SR_CLNT_HELLO_B;
+						}
+					else if (!(s->options & SSL_OP_NO_SSLv2))
+						{
+						type=1;
+						}
+					}
+				else if (!(s->options & SSL_OP_NO_SSLv3))
+					{
+					s->version=SSL3_VERSION;
+					/* type=2; */
+					s->state=SSL23_ST_SR_CLNT_HELLO_B;
+					}
+				else if (!(s->options & SSL_OP_NO_SSLv2))
+					type=1;
+
+				}
+			}
+		else if ((p[0] == SSL3_RT_HANDSHAKE) &&
+			 (p[1] == SSL3_VERSION_MAJOR) &&
+			 (p[5] == SSL3_MT_CLIENT_HELLO) &&
+			 ((p[3] == 0 && p[4] < 5 /* silly record length? */)
+				|| (p[9] >= p[1])))
+			{
+			/*
+			 * SSLv3 or tls1 header
+			 */
+			
+			v[0]=p[1]; /* major version (= SSL3_VERSION_MAJOR) */
+			/* We must look at client_version inside the Client Hello message
+			 * to get the correct minor version.
+			 * However if we have only a pathologically small fragment of the
+			 * Client Hello message, this would be difficult, and we'd have
+			 * to read more records to find out.
+			 * No known SSL 3.0 client fragments ClientHello like this,
+			 * so we simply assume TLS 1.0 to avoid protocol version downgrade
+			 * attacks. */
+			if (p[3] == 0 && p[4] < 6)
+				{
+#if 0
+				SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_SMALL);
+				goto err;
+#else
+				v[1] = TLS1_VERSION_MINOR;
+#endif
+				}
+			/* if major version number > 3 set minor to a value
+			 * which will use the highest version 3 we support.
+			 * If TLS 2.0 ever appears we will need to revise
+			 * this....
+			 */
+			else if (p[9] > SSL3_VERSION_MAJOR)
+				v[1]=0xff;
+			else
+				v[1]=p[10]; /* minor version according to client_version */
+			if (v[1] >= TLS1_VERSION_MINOR)
+				{
+				if (!(s->options & SSL_OP_NO_TLSv1))
+					{
+					s->version=TLS1_VERSION;
+					type=3;
+					}
+				else if (!(s->options & SSL_OP_NO_SSLv3))
+					{
+					s->version=SSL3_VERSION;
+					type=3;
+					}
+				}
+			else
+				{
+				/* client requests SSL 3.0 */
+				if (!(s->options & SSL_OP_NO_SSLv3))
+					{
+					s->version=SSL3_VERSION;
+					type=3;
+					}
+				else if (!(s->options & SSL_OP_NO_TLSv1))
+					{
+					/* we won't be able to use TLS of course,
+					 * but this will send an appropriate alert */
+					s->version=TLS1_VERSION;
+					type=3;
+					}
+				}
+			}
+		else if ((strncmp("GET ", (char *)p,4) == 0) ||
+			 (strncmp("POST ",(char *)p,5) == 0) ||
+			 (strncmp("HEAD ",(char *)p,5) == 0) ||
+			 (strncmp("PUT ", (char *)p,4) == 0))
+			{
+			SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTP_REQUEST);
+			goto err;
+			}
+		else if (strncmp("CONNECT",(char *)p,7) == 0)
+			{
+			SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTPS_PROXY_REQUEST);
+			goto err;
+			}
+		}
+
+	if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
+		{
+		/* we have SSLv3/TLSv1 in an SSLv2 header
+		 * (other cases skip this state) */
+
+		type=2;
+		p=s->packet;
+		v[0] = p[3]; /* == SSL3_VERSION_MAJOR */
+		v[1] = p[4];
+
+/* The SSL2 protocol allows n to be larger, just pick
+ * a reasonable buffer size. */
+#if SSL3_RT_DEFAULT_PACKET_SIZE < 1024*4 - SSL3_RT_DEFAULT_WRITE_OVERHEAD
+#error "SSL3_RT_DEFAULT_PACKET_SIZE is too small."
+#endif
+		n=((p[0]&0x7f)<<8)|p[1];
+		if (n > SSL3_RT_DEFAULT_PACKET_SIZE - 2)
+			{
+			SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE);
+			goto err;
+			}
+
+		j=ssl23_read_bytes(s,n+2);
+		if (j <= 0) return(j);
+
+		ssl3_finish_mac(s, s->packet+2, s->packet_length-2);
+		if (s->msg_callback)
+			s->msg_callback(0, SSL2_VERSION, 0, s->packet+2, s->packet_length-2, s, s->msg_callback_arg); /* CLIENT-HELLO */
+
+		p=s->packet;
+		p+=5;
+		n2s(p,csl);
+		n2s(p,sil);
+		n2s(p,cl);
+		d=(unsigned char *)s->init_buf->data;
+		if ((csl+sil+cl+11) != s->packet_length) /* We can't have TLS extensions in SSL 2.0 format
+		                                          * Client Hello, can we? Error condition should be
+		                                          * '>' otherweise */
+			{
+			SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH);
+			goto err;
+			}
+
+		/* record header: msg_type ... */
+		*(d++) = SSL3_MT_CLIENT_HELLO;
+		/* ... and length (actual value will be written later) */
+		d_len = d;
+		d += 3;
+
+		/* client_version */
+		*(d++) = SSL3_VERSION_MAJOR; /* == v[0] */
+		*(d++) = v[1];
+
+		/* lets populate the random area */
+		/* get the challenge_length */
+		i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl;
+		memset(d,0,SSL3_RANDOM_SIZE);
+		memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i);
+		d+=SSL3_RANDOM_SIZE;
+
+		/* no session-id reuse */
+		*(d++)=0;
+
+		/* ciphers */
+		j=0;
+		dd=d;
+		d+=2;
+		for (i=0; i<csl; i+=3)
+			{
+			if (p[i] != 0) continue;
+			*(d++)=p[i+1];
+			*(d++)=p[i+2];
+			j+=2;
+			}
+		s2n(j,dd);
+
+		/* COMPRESSION */
+		*(d++)=1;
+		*(d++)=0;
+		
+#if 0
+                /* copy any remaining data with may be extensions */
+	        p = p+csl+sil+cl;
+		while (p <  s->packet+s->packet_length)
+			{
+			*(d++)=*(p++);
+			}
+#endif
+
+		i = (d-(unsigned char *)s->init_buf->data) - 4;
+		l2n3((long)i, d_len);
+
+		/* get the data reused from the init_buf */
+		s->s3->tmp.reuse_message=1;
+		s->s3->tmp.message_type=SSL3_MT_CLIENT_HELLO;
+		s->s3->tmp.message_size=i;
+		}
+
+	/* imaginary new state (for program structure): */
+	/* s->state = SSL23_SR_CLNT_HELLO_C */
+
+	if (type == 1)
+		{
+#ifdef OPENSSL_NO_SSL2
+		SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
+		goto err;
+#else
+		/* we are talking sslv2 */
+		/* we need to clean up the SSLv3/TLSv1 setup and put in the
+		 * sslv2 stuff. */
+
+		if (s->s2 == NULL)
+			{
+			if (!ssl2_new(s))
+				goto err;
+			}
+		else
+			ssl2_clear(s);
+
+		if (s->s3 != NULL) ssl3_free(s);
+
+		if (!BUF_MEM_grow_clean(s->init_buf,
+			SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
+			{
+			goto err;
+			}
+
+		s->state=SSL2_ST_GET_CLIENT_HELLO_A;
+		if (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3)
+			s->s2->ssl2_rollback=0;
+		else
+			/* reject SSL 2.0 session if client supports SSL 3.0 or TLS 1.0
+			 * (SSL 3.0 draft/RFC 2246, App. E.2) */
+			s->s2->ssl2_rollback=1;
+
+		/* setup the n 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;
+
+		s->method=SSLv2_server_method();
+		s->handshake_func=s->method->ssl_accept;
+#endif
+		}
+
+	if ((type == 2) || (type == 3))
+		{
+		/* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */
+
+		if (!ssl_init_wbio_buffer(s,1)) goto err;
+
+		/* we are in this state */
+		s->state=SSL3_ST_SR_CLNT_HELLO_A;
+
+		if (type == 3)
+			{
+			/* put the 'n' 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;
+			}
+		else
+			{
+			s->packet_length=0;
+			s->s3->rbuf.left=0;
+			s->s3->rbuf.offset=0;
+			}
+
+		if (s->version == TLS1_VERSION)
+			s->method = TLSv1_server_method();
+		else
+			s->method = SSLv3_server_method();
+#if 0 /* ssl3_get_client_hello does this */
+		s->client_version=(v[0]<<8)|v[1];
+#endif
+		s->handshake_func=s->method->ssl_accept;
+		}
+	
+	if ((type < 1) || (type > 3))
+		{
+		/* bad, very bad */
+		SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNKNOWN_PROTOCOL);
+		goto err;
+		}
+	s->init_num=0;
+
+	if (buf != buf_space) OPENSSL_free(buf);
+	return(SSL_accept(s));
+err:
+	if (buf != buf_space) OPENSSL_free(buf);
+	return(-1);
+	}