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Diffstat (limited to 'openssl/ssl/s23_clnt.c')
-rw-r--r--openssl/ssl/s23_clnt.c221
1 files changed, 151 insertions, 70 deletions
diff --git a/openssl/ssl/s23_clnt.c b/openssl/ssl/s23_clnt.c
index bc918170e..c4d8bf2eb 100644
--- a/openssl/ssl/s23_clnt.c
+++ b/openssl/ssl/s23_clnt.c
@@ -55,6 +55,59 @@
* 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"
@@ -63,10 +116,10 @@
#include <openssl/objects.h>
#include <openssl/evp.h>
-static SSL_METHOD *ssl23_get_client_method(int ver);
+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 SSL_METHOD *ssl23_get_client_method(int ver)
+static const SSL_METHOD *ssl23_get_client_method(int ver)
{
#ifndef OPENSSL_NO_SSL2
if (ver == SSL2_VERSION)
@@ -197,20 +250,40 @@ end:
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,j,ch_len;
+ 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;
ssl2_compat = (s->options & SSL_OP_NO_SSLv2) ? 0 : 1;
+ if (ssl2_compat && ssl23_no_ssl2_ciphers(s))
+ ssl2_compat = 0;
+
if (!(s->options & SSL_OP_NO_TLSv1))
{
version = TLS1_VERSION;
@@ -223,7 +296,7 @@ static int ssl23_client_hello(SSL *s)
{
version = SSL2_VERSION;
}
-#ifndef OPENSSL_NO_TLSEXT
+#ifndef OPENSSL_NO_TLSEXT
if (version != SSL2_VERSION)
{
/* have to disable SSL 2.0 compatibility if we need TLS extensions */
@@ -232,6 +305,10 @@ static int ssl23_client_hello(SSL *s)
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
@@ -257,14 +334,6 @@ static int ssl23_client_hello(SSL *s)
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;
@@ -318,6 +387,10 @@ static int ssl23_client_hello(SSL *s)
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
@@ -368,7 +441,11 @@ static int ssl23_client_hello(SSL *s)
p+=i;
/* COMPRESSION */
- if (s->ctx->comp_methods == NULL)
+#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);
@@ -378,8 +455,16 @@ static int ssl23_client_hello(SSL *s)
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);
@@ -388,7 +473,6 @@ static int ssl23_client_hello(SSL *s)
#endif
l = p-d;
- *p = 42;
/* fill in 4-byte handshake header */
d=&(buf[5]);
@@ -483,6 +567,10 @@ static int ssl23_get_server_hello(SSL *s)
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;
@@ -503,7 +591,7 @@ static int ssl23_get_server_hello(SSL *s)
/* use special padding (SSL 3.0 draft/RFC 2246, App. E.2) */
s->s2->ssl2_rollback=1;
- /* setup the 5 bytes we have read so we get them from
+ /* 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;
@@ -519,39 +607,16 @@ static int ssl23_get_server_hello(SSL *s)
s->handshake_func=s->method->ssl_connect;
#endif
}
- else if ((p[0] == SSL3_RT_HANDSHAKE) &&
- (p[1] == SSL3_VERSION_MAJOR) &&
- ((p[2] == SSL3_VERSION_MINOR) ||
- (p[2] == TLS1_VERSION_MINOR)) &&
- (p[5] == SSL3_MT_SERVER_HELLO))
+ else if (p[1] == SSL3_VERSION_MAJOR &&
+ (p[2] == SSL3_VERSION_MINOR || p[2] == TLS1_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 */
-
- if (!ssl_init_wbio_buffer(s,1)) goto err;
-
- /* we are in this state */
- s->state=SSL3_ST_CR_SRVR_HELLO_A;
-
- /* put the 5 bytes we have read into the input buffer
- * for SSLv3 */
- s->rstate=SSL_ST_READ_HEADER;
- s->packet_length=n;
- s->packet= &(s->s3->rbuf.buf[0]);
- memcpy(s->packet,buf,n);
- s->s3->rbuf.left=n;
- s->s3->rbuf.offset=0;
+ /* 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();
}
@@ -566,35 +631,52 @@ static int ssl23_get_server_hello(SSL *s)
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
goto err;
}
-
- s->handshake_func=s->method->ssl_connect;
- }
- else if ((p[0] == SSL3_RT_ALERT) &&
- (p[1] == SSL3_VERSION_MAJOR) &&
- ((p[2] == SSL3_VERSION_MINOR) ||
- (p[2] == TLS1_VERSION_MINOR)) &&
- (p[3] == 0) &&
- (p[4] == 2))
- {
- void (*cb)(const SSL *ssl,int type,int val)=NULL;
- int j;
-
- /* An alert */
- 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)
+
+ if (p[0] == SSL3_RT_ALERT && p[5] != SSL3_AL_WARNING)
{
- j=(i<<8)|p[6];
- cb(s,SSL_CB_READ_ALERT,j);
+ /* 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;
}
- 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
{
@@ -612,4 +694,3 @@ static int ssl23_get_server_hello(SSL *s)
err:
return(-1);
}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-08 18:32:49 +0000