* 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>
-#include "ssl_locl.h"
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
-static SSL_METHOD *ssl23_get_server_method(int ver);
+static const SSL_METHOD *ssl23_get_server_method(int ver);
int ssl23_get_client_hello(SSL *s);
-static SSL_METHOD *ssl23_get_server_method(int ver)
+static const SSL_METHOD *ssl23_get_server_method(int ver)
{
-#ifndef NO_SSL2
+#ifndef OPENSSL_NO_SSL2
if (ver == SSL2_VERSION)
return(SSLv2_server_method());
#endif
return(SSLv3_server_method());
else if (ver == TLS1_VERSION)
return(TLSv1_server_method());
+ else if (ver == TLS1_1_VERSION)
+ return(TLSv1_1_server_method());
+ else if (ver == TLS1_2_VERSION)
+ return(TLSv1_2_server_method());
else
return(NULL);
}
-SSL_METHOD *SSLv23_server_method(void)
- {
- static int init=1;
- static SSL_METHOD SSLv23_server_data;
-
- if (init)
- {
- memcpy((char *)&SSLv23_server_data,
- (char *)sslv23_base_method(),sizeof(SSL_METHOD));
- SSLv23_server_data.ssl_accept=ssl23_accept;
- SSLv23_server_data.get_ssl_method=ssl23_get_server_method;
- init=0;
- }
- return(&SSLv23_server_data);
- }
+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=time(NULL);
- void (*cb)()=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;
else if (s->ctx->info_callback != NULL)
cb=s->ctx->info_callback;
- if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
s->in_handshake++;
+ if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
for (;;)
{
}
}
end:
+ s->in_handshake--;
if (cb != NULL)
cb(s,SSL_CB_ACCEPT_EXIT,ret);
- s->in_handshake--;
return(ret);
}
* 9/10 client_version /
*/
char *buf= &(buf_space[0]);
- unsigned char *p,*d,*dd;
+ 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];
-#ifndef NO_RSA
- int use_sslv2_strong=0;
-#endif
if (s->state == SSL23_ST_SR_CLNT_HELLO_A)
{
/* SSLv3/TLSv1 */
if (p[4] >= TLS1_VERSION_MINOR)
{
- if (!(s->options & SSL_OP_NO_TLSv1))
+ if (p[4] >= TLS1_2_VERSION_MINOR &&
+ !(s->options & SSL_OP_NO_TLSv1_2))
+ {
+ s->version=TLS1_2_VERSION;
+ s->state=SSL23_ST_SR_CLNT_HELLO_B;
+ }
+ else if (p[4] >= TLS1_1_VERSION_MINOR &&
+ !(s->options & SSL_OP_NO_TLSv1_1))
+ {
+ s->version=TLS1_1_VERSION;
+ /* type=2; */ /* done later to survive restarts */
+ s->state=SSL23_ST_SR_CLNT_HELLO_B;
+ }
+ else if (!(s->options & SSL_OP_NO_TLSv1))
{
s->version=TLS1_VERSION;
/* type=2; */ /* done later to survive restarts */
else if (!(s->options & SSL_OP_NO_SSLv2))
type=1;
- if (s->options & SSL_OP_NON_EXPORT_FIRST)
- /* Not only utterly confusing, but broken
- * ('fractured programming'?) -- the details
- * of this block nearly make it work
- * as intended in this environment, but on one
- * of the fine points (w.r.t. restarts) it fails.
- * The obvious fix would be even more devastating
- * to program structure; if you want the functionality,
- * throw this away and implement it in a way
- * that makes sense */
- {
-#if 0
- STACK_OF(SSL_CIPHER) *sk;
- SSL_CIPHER *c;
- int ne2,ne3;
-
- j=((p[0]&0x7f)<<8)|p[1];
- if (j > (1024*4))
- {
- SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE);
- goto err;
- }
-
- n=ssl23_read_bytes(s,j+2);
- if (n <= 0) return(n);
- p=s->packet;
-
- if ((buf=OPENSSL_malloc(n)) == NULL)
- {
- SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- memcpy(buf,p,n);
-
- p+=5;
- n2s(p,csl);
- p+=4;
-
- sk=ssl_bytes_to_cipher_list(
- s,p,csl,NULL);
- if (sk != NULL)
- {
- ne2=ne3=0;
- for (j=0; j<sk_SSL_CIPHER_num(sk); j++)
- {
- c=sk_SSL_CIPHER_value(sk,j);
- if (!SSL_C_IS_EXPORT(c))
- {
- if ((c->id>>24L) == 2L)
- ne2=1;
- else
- ne3=1;
- }
- }
- if (ne2 && !ne3)
- {
- type=1;
- use_sslv2_strong=1;
- goto next_bit;
- }
- }
-#else
- SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_OPTION);
- goto err;
-#endif
- }
}
}
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])))
+ || (p[9] >= p[1])))
{
/*
* SSLv3 or tls1 header
/* 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, we'd have
- * to read at least one additional record to find out.
- * This doesn't usually happen in real life, so we just complain
- * for now.
- */
+ * 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
}
- v[1]=p[10]; /* minor version according to client_version */
+ /* 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))
+ if (v[1] >= TLS1_2_VERSION_MINOR &&
+ !(s->options & SSL_OP_NO_TLSv1_2))
+ {
+ s->version=TLS1_2_VERSION;
+ type=3;
+ }
+ else if (v[1] >= TLS1_1_VERSION_MINOR &&
+ !(s->options & SSL_OP_NO_TLSv1_1))
+ {
+ s->version=TLS1_1_VERSION;
+ type=3;
+ }
+ else if (!(s->options & SSL_OP_NO_TLSv1))
{
s->version=TLS1_VERSION;
type=3;
type=3;
}
}
- else if (!(s->options & SSL_OP_NO_SSLv3))
+ else
{
- s->version=SSL3_VERSION;
- type=3;
+ /* 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) ||
}
}
+ if (s->version < TLS1_2_VERSION && tls1_suiteb(s))
+ {
+ SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,
+ SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
+ goto err;
+ }
+
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode() && (s->version < TLS1_VERSION))
+ {
+ SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,
+ SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+ goto err;
+ }
+#endif
+
if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
{
/* we have SSLv3/TLSv1 in an SSLv2 header
j=ssl23_read_bytes(s,n+2);
if (j <= 0) return(j);
- ssl3_finish_mac(s,&(s->packet[2]),s->packet_length-2);
+ 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,sil);
n2s(p,cl);
d=(unsigned char *)s->init_buf->data;
- if ((csl+sil+cl+11) != s->packet_length)
+ 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];
*(d++)=1;
*(d++)=0;
- i=(d-(unsigned char *)s->init_buf->data);
+#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;
if (type == 1)
{
-#ifdef NO_SSL2
+#ifdef OPENSSL_NO_SSL2
SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
goto err;
#else
if (s->s3 != NULL) ssl3_free(s);
- if (!BUF_MEM_grow(s->init_buf,
+ 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_MSIE_SSLV2_RSA_PADDING) ||
- use_sslv2_strong ||
- (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3))
+ 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
* 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.left=0;
s->s3->rbuf.offset=0;
}
-
- if (s->version == TLS1_VERSION)
+ if (s->version == TLS1_2_VERSION)
+ s->method = TLSv1_2_server_method();
+ else if (s->version == TLS1_1_VERSION)
+ s->method = TLSv1_1_server_method();
+ else if (s->version == TLS1_VERSION)
s->method = TLSv1_server_method();
else
s->method = SSLv3_server_method();
s->init_num=0;
if (buf != buf_space) OPENSSL_free(buf);
- s->first_packet=1;
return(SSL_accept(s));
err:
if (buf != buf_space) OPENSSL_free(buf);
projects / openssl.git / blobdiff