Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2 individually
diff --git a/ChangeLog b/ChangeLog
index 505d90a..1a94b45 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -20,6 +20,8 @@
* Support for session tickets (RFC 5077)
Changes
+ * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
+ individually
* Introduced separate SSL Ciphersuites module that is based on
Cipher and MD information
* Internals for SSL module adapted to have separate IV pointer that is
diff --git a/include/polarssl/config.h b/include/polarssl/config.h
index 5aee165..9fc5458 100644
--- a/include/polarssl/config.h
+++ b/include/polarssl/config.h
@@ -538,6 +538,54 @@
#define POLARSSL_SSL_MAX_FRAGMENT_LENGTH
/**
+ * \def POLARSSL_SSL_PROTO_SSL3
+ *
+ * Enable support for SSL 3.0
+ *
+ * Requires: POLARSSL_MD5_C
+ * POLARSSL_SHA1_C
+ *
+ * Comment this macro to disable support for SSL 3.0
+ */
+#define POLARSSL_SSL_PROTO_SSL3
+
+/**
+ * \def POLARSSL_SSL_PROTO_TLS1
+ *
+ * Enable support for TLS 1.0
+ *
+ * Requires: POLARSSL_MD5_C
+ * POLARSSL_SHA1_C
+ *
+ * Comment this macro to disable support for TLS 1.0
+ */
+#define POLARSSL_SSL_PROTO_TLS1
+
+/**
+ * \def POLARSSL_SSL_PROTO_TLS1_1
+ *
+ * Enable support for TLS 1.1
+ *
+ * Requires: POLARSSL_MD5_C
+ * POLARSSL_SHA1_C
+ *
+ * Comment this macro to disable support for TLS 1.1
+ */
+#define POLARSSL_SSL_PROTO_TLS1_1
+
+/**
+ * \def POLARSSL_SSL_PROTO_TLS1_2
+ *
+ * Enable support for TLS 1.2
+ *
+ * Requires: POLARSSL_SHA256_C or POLARSSL_SHA512_C
+ * (Depends on ciphersuites)
+ *
+ * Comment this macro to disable support for TLS 1.2
+ */
+#define POLARSSL_SSL_PROTO_TLS1_2
+
+/**
* \def POLARSSL_SSL_SESSION_TICKETS
*
* Enable support for RFC 5077 session tickets in SSL
@@ -1226,7 +1274,8 @@
* Caller: library/ssl_cli.c
* library/ssl_srv.c
*
- * Requires: POLARSSL_MD5_C, POLARSSL_SHA1_C, POLARSSL_CIPHER_C
+ * Requires: POLARSSL_CIPHER_C and at least one of the
+ * POLARSSL_SSL_PROTO_* defines
*
* This module is required for SSL/TLS.
*/
@@ -1454,8 +1503,7 @@
#error "POLARSSL_SSL_CLI_C defined, but not all prerequisites"
#endif
-#if defined(POLARSSL_SSL_TLS_C) && ( !defined(POLARSSL_MD5_C) || \
- !defined(POLARSSL_SHA1_C) || !defined(POLARSSL_CIPHER_C) )
+#if defined(POLARSSL_SSL_TLS_C) && !defined(POLARSSL_CIPHER_C)
#error "POLARSSL_SSL_TLS_C defined, but not all prerequisites"
#endif
@@ -1463,6 +1511,28 @@
#error "POLARSSL_SSL_SRV_C defined, but not all prerequisites"
#endif
+#if defined(POLARSSL_SSL_TLS_C) && (!defined(POLARSSL_SSL_PROTO_SSL3) && \
+ !defined(POLARSSL_SSL_PROTO_TLS1) && !defined(POLARSSL_SSL_PROTO_TLS1_1) && \
+ !defined(POLARSSL_SSL_PROTO_TLS1_2))
+#error "POLARSSL_SSL_TLS_C defined, but no protocols are active"
+#endif
+
+#if defined(POLARSSL_SSL_TLS_C) && (defined(POLARSSL_SSL_PROTO_SSL3) && \
+ defined(POLARSSL_SSL_PROTO_TLS1_1) && !defined(POLARSSL_SSL_PROTO_TLS1))
+#error "Illegal protocol selection"
+#endif
+
+#if defined(POLARSSL_SSL_TLS_C) && (defined(POLARSSL_SSL_PROTO_TLS1) && \
+ defined(POLARSSL_SSL_PROTO_TLS1_2) && !defined(POLARSSL_SSL_PROTO_TLS1_1))
+#error "Illegal protocol selection"
+#endif
+
+#if defined(POLARSSL_SSL_TLS_C) && (defined(POLARSSL_SSL_PROTO_SSL3) && \
+ defined(POLARSSL_SSL_PROTO_TLS1_2) && (!defined(POLARSSL_SSL_PROTO_TLS1) || \
+ !defined(POLARSSL_SSL_PROTO_TLS1_1)))
+#error "Illegal protocol selection"
+#endif
+
#if defined(POLARSSL_SSL_SESSION_TICKETS) && defined(POLARSSL_SSL_TLS_C) && \
( !defined(POLARSSL_AES_C) || !defined(POLARSSL_SHA256_C) )
#error "POLARSSL_SSL_SESSION_TICKETS_C defined, but not all prerequisites"
diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index 8383b7f..1576fcb 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -31,14 +31,28 @@
#include "net.h"
#include "bignum.h"
-#include "md5.h"
-#include "sha1.h"
-#include "sha256.h"
-#include "sha512.h"
-#include "aes.h"
-
#include "ssl_ciphersuites.h"
+#if defined(POLARSSL_MD5_C)
+#include "md5.h"
+#endif
+
+#if defined(POLARSSL_SHA1_C)
+#include "sha1.h"
+#endif
+
+#if defined(POLARSSL_SHA256_C)
+#include "sha256.h"
+#endif
+
+#if defined(POLARSSL_SHA512_C)
+#include "sha512.h"
+#endif
+
+#if defined(POLARSSL_AES_C)
+#include "aes.h"
+#endif
+
#if defined(POLARSSL_X509_PARSE_C)
#include "x509.h"
#endif
@@ -121,6 +135,44 @@
#define SSL_MINOR_VERSION_2 2 /*!< TLS v1.1 */
#define SSL_MINOR_VERSION_3 3 /*!< TLS v1.2 */
+/* Determine minimum supported version */
+#define SSL_MIN_MAJOR_VERSION SSL_MAJOR_VERSION_3
+
+#if defined(POLARSSL_SSL_PROTO_SSL3)
+#define SSL_MIN_MINOR_VERSION SSL_MINOR_VERSION_0
+#else
+#if defined(POLARSSL_SSL_PROTO_TLS1)
+#define SSL_MIN_MINOR_VERSION SSL_MINOR_VERSION_1
+#else
+#if defined(POLARSSL_SSL_PROTO_TLS1_1)
+#define SSL_MIN_MINOR_VERSION SSL_MINOR_VERSION_2
+#else
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#define SSL_MIN_MINOR_VERSION SSL_MINOR_VERSION_3
+#endif
+#endif
+#endif
+#endif
+
+/* Determine maximum supported version */
+#define SSL_MAX_MAJOR_VERSION SSL_MAJOR_VERSION_3
+
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#define SSL_MAX_MINOR_VERSION SSL_MINOR_VERSION_3
+#else
+#if defined(POLARSSL_SSL_PROTO_TLS1_1)
+#define SSL_MAX_MINOR_VERSION SSL_MINOR_VERSION_2
+#else
+#if defined(POLARSSL_SSL_PROTO_TLS1)
+#define SSL_MAX_MINOR_VERSION SSL_MINOR_VERSION_1
+#else
+#if defined(POLARSSL_SSL_PROTO_SSL3)
+#define SSL_MAX_MINOR_VERSION SSL_MINOR_VERSION_0
+#endif
+#endif
+#endif
+#endif
+
/* RFC 6066 section 4, see also mfl_code_to_length in ssl_tls.c
* NONE must be zero so that memset()ing structure to zero works */
#define SSL_MAX_FRAG_LEN_NONE 0 /*!< don't use this extension */
@@ -392,9 +444,11 @@
unsigned char iv_enc[16]; /*!< IV (encryption) */
unsigned char iv_dec[16]; /*!< IV (decryption) */
+#if defined(POLARSSL_SSL_PROTO_SSL3)
/* Needed only for SSL v3.0 secret */
unsigned char mac_enc[32]; /*!< SSL v3.0 secret (enc) */
unsigned char mac_dec[32]; /*!< SSL v3.0 secret (dec) */
+#endif /* POLARSSL_SSL_PROTO_SSL3 */
md_context_t md_ctx_enc; /*!< MAC (encryption) */
md_context_t md_ctx_dec; /*!< MAC (decryption) */
@@ -436,12 +490,19 @@
/*
* Checksum contexts
*/
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
md5_context fin_md5;
sha1_context fin_sha1;
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA256_C)
sha256_context fin_sha256;
+#endif
#if defined(POLARSSL_SHA512_C)
sha512_context fin_sha512;
#endif
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
void (*update_checksum)(ssl_context *, const unsigned char *, size_t);
void (*calc_verify)(ssl_context *, unsigned char *);
@@ -1010,11 +1071,12 @@
/**
* \brief Set the maximum supported version sent from the client side
* and/or accepted at the server side
- * (Default: SSL_MAJOR_VERSION_3, SSL_MINOR_VERSION_3)
+ * (Default: SSL_MAX_MAJOR_VERSION, SSL_MAX_MINOR_VERSION)
*
- * Note: This prevents ciphersuites from 'higher' versions to
- * be ignored.
- *
+ * Note: This ignores ciphersuites from 'higher' versions.
+ * Note: Input outside of the SSL_MAX_XXXXX_VERSION and
+ * SSL_MIN_XXXXX_VERSION range is ignored.
+ *
* \param ssl SSL context
* \param major Major version number (only SSL_MAJOR_VERSION_3 supported)
* \param minor Minor version number (SSL_MINOR_VERSION_0,
@@ -1026,7 +1088,10 @@
/**
* \brief Set the minimum accepted SSL/TLS protocol version
- * (Default: SSL_MAJOR_VERSION_3, SSL_MINOR_VERSION_0)
+ * (Default: SSL_MIN_MAJOR_VERSION, SSL_MIN_MINOR_VERSION)
+ *
+ * Note: Input outside of the SSL_MAX_XXXXX_VERSION and
+ * SSL_MIN_XXXXX_VERSION range is ignored.
*
* \param ssl SSL context
* \param major Major version number (only SSL_MAJOR_VERSION_3 supported)
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 1c2c395..99d3206 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -129,6 +129,7 @@
*olen = 5 + ssl->verify_data_len;
}
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
static void ssl_write_signature_algorithms_ext( ssl_context *ssl,
unsigned char *buf,
size_t *olen )
@@ -198,6 +199,7 @@
*olen = 6 + sig_alg_len;
}
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
#if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
static void ssl_write_supported_elliptic_curves_ext( ssl_context *ssl,
@@ -384,8 +386,8 @@
if( ssl->max_major_ver == 0 && ssl->max_minor_ver == 0 )
{
- ssl->max_major_ver = SSL_MAJOR_VERSION_3;
- ssl->max_minor_ver = SSL_MINOR_VERSION_3;
+ ssl->max_major_ver = SSL_MAX_MAJOR_VERSION;
+ ssl->max_minor_ver = SSL_MAX_MINOR_VERSION;
}
/*
@@ -538,8 +540,10 @@
ssl_write_renegotiation_ext( ssl, p + 2 + ext_len, &olen );
ext_len += olen;
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
ssl_write_signature_algorithms_ext( ssl, p + 2 + ext_len, &olen );
ext_len += olen;
+#endif
#if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
ssl_write_supported_elliptic_curves_ext( ssl, p + 2 + ext_len, &olen );
@@ -1152,6 +1156,7 @@
#endif /* POLARSSL_KEY_EXCHANGE_PSK_ENABLED ||
POLARSSL_KEY_EXCHANGE_DHE_PSK_ENABLED */
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
#if defined(POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED) || \
defined(POLARSSL_KEY_EXCHANGE_ECDHE_RSA_ENABLED)
static int ssl_parse_signature_algorithm( ssl_context *ssl,
@@ -1212,6 +1217,7 @@
}
#endif /* POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED ||
POLARSSL_KEY_EXCHANGE_ECDHE_RSA_ENABLED */
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
static int ssl_parse_server_key_exchange( ssl_context *ssl )
{
@@ -1224,7 +1230,7 @@
unsigned char hash[64];
md_type_t md_alg = POLARSSL_MD_NONE;
unsigned int hashlen = 0;
-#endif
+#endif
SSL_DEBUG_MSG( 2, ( "=> parse server key exchange" ) );
@@ -1325,6 +1331,7 @@
if( ciphersuite_info->key_exchange == POLARSSL_KEY_EXCHANGE_DHE_RSA ||
ciphersuite_info->key_exchange == POLARSSL_KEY_EXCHANGE_ECDHE_RSA )
{
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
/*
* Handle the digitally-signed structure
*/
@@ -1336,6 +1343,7 @@
return( POLARSSL_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE );
}
}
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
n = ( p[0] << 8 ) | p[1];
p += 2;
@@ -1360,6 +1368,8 @@
return( POLARSSL_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE );
}
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
if( ssl->minor_ver != SSL_MINOR_VERSION_3 )
{
md5_context md5;
@@ -1394,6 +1404,10 @@
hashlen = 36;
}
else
+#endif /* POLARSSL_SSL_PROTO_SSL3 || POLARSSL_SSL_PROTO_TLS1 || \
+ POLARSSL_SSL_PROTO_TLS1_1 */
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+ if( ssl->minor_ver == SSL_MINOR_VERSION_3 )
{
md_context_t ctx;
@@ -1418,6 +1432,10 @@
md_finish( &ctx, hash );
md_free_ctx( &ctx );
}
+ else
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
SSL_DEBUG_BUF( 3, "parameters hash", hash, hashlen );
@@ -1445,7 +1463,7 @@
int ret;
unsigned char *buf, *p;
size_t n = 0, m = 0;
- size_t cert_type_len = 0, sig_alg_len = 0, dn_len = 0;
+ size_t cert_type_len = 0, dn_len = 0;
SSL_DEBUG_MSG( 2, ( "=> parse certificate request" ) );
@@ -1527,10 +1545,11 @@
return( POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST );
}
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
if( ssl->minor_ver == SSL_MINOR_VERSION_3 )
{
- sig_alg_len = ( ( buf[5 + n] << 8 )
- | ( buf[6 + n] ) );
+ size_t sig_alg_len = ( ( buf[5 + n] << 8 )
+ | ( buf[6 + n] ) );
p = buf + 7 + n;
m += 2;
@@ -1542,6 +1561,7 @@
return( POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST );
}
}
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
dn_len = ( ( buf[5 + m + n] << 8 )
| ( buf[6 + m + n] ) );
@@ -1808,12 +1828,15 @@
i = 4;
n = pk_get_size( &ssl->session_negotiate->peer_cert->pk ) / 8;
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
if( ssl->minor_ver != SSL_MINOR_VERSION_0 )
{
i += 2;
ssl->out_msg[4] = (unsigned char)( n >> 8 );
ssl->out_msg[5] = (unsigned char)( n );
}
+#endif
ret = rsa_pkcs1_encrypt(
pk_rsa( ssl->session_negotiate->peer_cert->pk ),
@@ -1914,6 +1937,8 @@
*/
ssl->handshake->calc_verify( ssl, hash );
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
if( ssl->minor_ver != SSL_MINOR_VERSION_3 )
{
/*
@@ -1932,6 +1957,10 @@
md_alg = POLARSSL_MD_NONE;
}
else
+#endif /* POLARSSL_SSL_PROTO_SSL3 || POLARSSL_SSL_PROTO_TLS1 || \
+ POLARSSL_SSL_PROTO_TLS1_1 */
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+ if( ssl->minor_ver == SSL_MINOR_VERSION_3 )
{
/*
* digitally-signed struct {
@@ -1964,6 +1993,10 @@
offset = 2;
}
+ else
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
if ( ssl->rsa_key )
n = ssl->rsa_key_len ( ssl->rsa_key );
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index bfbf2cb..4a71367 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -424,6 +424,7 @@
return( 0 );
}
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
static int ssl_parse_signature_algorithms_ext( ssl_context *ssl,
const unsigned char *buf,
size_t len )
@@ -492,6 +493,7 @@
return( 0 );
}
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
#if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
static int ssl_parse_supported_elliptic_curves( ssl_context *ssl,
@@ -1174,6 +1176,7 @@
return( ret );
break;
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
case TLS_EXT_SIG_ALG:
SSL_DEBUG_MSG( 3, ( "found signature_algorithms extension" ) );
if( ssl->renegotiation == SSL_RENEGOTIATION )
@@ -1183,6 +1186,7 @@
if( ret != 0 )
return( ret );
break;
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
#if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
case TLS_EXT_SUPPORTED_ELLIPTIC_CURVES:
@@ -1713,6 +1717,7 @@
*p++ = 1;
*p++ = SSL_CERT_TYPE_RSA_SIGN;
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
/*
* Add signature_algorithms for verify (TLS 1.2)
* Only add current running algorithm that is already required for
@@ -1738,6 +1743,7 @@
n += 4;
}
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
p += 2;
crt = ssl->ca_chain;
@@ -1908,6 +1914,8 @@
{
size_t rsa_key_len = 0;
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
if( ssl->minor_ver != SSL_MINOR_VERSION_3 )
{
md5_context md5;
@@ -1940,6 +1948,10 @@
md_alg = POLARSSL_MD_NONE;
}
else
+#endif /* POLARSSL_SSL_PROTO_SSL3 || POLARSSL_SSL_PROTO_TLS1 || \
+ POLARSSL_SSL_PROTO_TLS1_1 */
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+ if( ssl->minor_ver == SSL_MINOR_VERSION_3 )
{
md_context_t ctx;
@@ -2001,12 +2013,17 @@
}
}
+ else
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
SSL_DEBUG_BUF( 3, "parameters hash", hash, hashlen );
if ( ssl->rsa_key )
rsa_key_len = ssl->rsa_key_len( ssl->rsa_key );
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
if( ssl->minor_ver == SSL_MINOR_VERSION_3 )
{
*(p++) = ssl->handshake->sig_alg;
@@ -2014,6 +2031,7 @@
n += 2;
}
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
*(p++) = (unsigned char)( rsa_key_len >> 8 );
*(p++) = (unsigned char)( rsa_key_len );
@@ -2170,6 +2188,8 @@
n = ssl->rsa_key_len( ssl->rsa_key );
ssl->handshake->pmslen = 48;
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
if( ssl->minor_ver != SSL_MINOR_VERSION_0 )
{
i += 2;
@@ -2180,6 +2200,7 @@
return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
}
}
+#endif
if( ssl->in_hslen != i + n )
{
@@ -2513,6 +2534,7 @@
return( POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
}
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
if( ssl->minor_ver == SSL_MINOR_VERSION_3 )
{
/*
@@ -2534,10 +2556,18 @@
n += 2;
}
else
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
+ if( ssl->minor_ver != SSL_MINOR_VERSION_3 )
{
hashlen = 36;
md_alg = POLARSSL_MD_NONE;
}
+ else
+#endif
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
/* EC NOT IMPLEMENTED YET */
if( ! pk_can_do( &ssl->session_negotiate->peer_cert->pk,
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 033c9fa..06eeb71 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -158,6 +158,7 @@
/*
* Key material generation
*/
+#if defined(POLARSSL_SSL_PROTO_SSL3)
static int ssl3_prf( const unsigned char *secret, size_t slen,
const char *label,
const unsigned char *random, size_t rlen,
@@ -202,7 +203,9 @@
return( 0 );
}
+#endif /* POLARSSL_SSL_PROTO_SSL3 */
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1)
static int tls1_prf( const unsigned char *secret, size_t slen,
const char *label,
const unsigned char *random, size_t rlen,
@@ -263,7 +266,10 @@
return( 0 );
}
+#endif /* POLARSSL_SSL_PROTO_TLS1) || POLARSSL_SSL_PROTO_TLS1_1 */
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA256_C)
static int tls_prf_sha256( const unsigned char *secret, size_t slen,
const char *label,
const unsigned char *random, size_t rlen,
@@ -303,6 +309,7 @@
return( 0 );
}
+#endif /* POLARSSL_SHA256_C */
#if defined(POLARSSL_SHA512_C)
static int tls_prf_sha384( const unsigned char *secret, size_t slen,
@@ -344,25 +351,39 @@
return( 0 );
}
-#endif
+#endif /* POLARSSL_SHA512_C */
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
static void ssl_update_checksum_start(ssl_context *, const unsigned char *, size_t);
+
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
static void ssl_update_checksum_md5sha1(ssl_context *, const unsigned char *, size_t);
-static void ssl_update_checksum_sha256(ssl_context *, const unsigned char *, size_t);
+#endif
+#if defined(POLARSSL_SSL_PROTO_SSL3)
static void ssl_calc_verify_ssl(ssl_context *,unsigned char *);
-static void ssl_calc_verify_tls(ssl_context *,unsigned char *);
-static void ssl_calc_verify_tls_sha256(ssl_context *,unsigned char *);
-
static void ssl_calc_finished_ssl(ssl_context *,unsigned char *,int);
+#endif
+
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1)
+static void ssl_calc_verify_tls(ssl_context *,unsigned char *);
static void ssl_calc_finished_tls(ssl_context *,unsigned char *,int);
+#endif
+
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA256_C)
+static void ssl_update_checksum_sha256(ssl_context *, const unsigned char *, size_t);
+static void ssl_calc_verify_tls_sha256(ssl_context *,unsigned char *);
static void ssl_calc_finished_tls_sha256(ssl_context *,unsigned char *,int);
+#endif
#if defined(POLARSSL_SHA512_C)
static void ssl_update_checksum_sha384(ssl_context *, const unsigned char *, size_t);
static void ssl_calc_verify_tls_sha384(ssl_context *,unsigned char *);
static void ssl_calc_finished_tls_sha384(ssl_context *,unsigned char *,int);
#endif
+#endif
int ssl_derive_keys( ssl_context *ssl )
{
@@ -375,7 +396,6 @@
unsigned int iv_copy_len;
const cipher_info_t *cipher_info;
const md_info_t *md_info;
- int ret;
ssl_session *session = ssl->session_negotiate;
ssl_transform *transform = ssl->transform_negotiate;
@@ -402,33 +422,47 @@
/*
* Set appropriate PRF function and other SSL / TLS / TLS1.2 functions
*/
+#if defined(POLARSSL_SSL_PROTO_SSL3)
if( ssl->minor_ver == SSL_MINOR_VERSION_0 )
{
handshake->tls_prf = ssl3_prf;
handshake->calc_verify = ssl_calc_verify_ssl;
handshake->calc_finished = ssl_calc_finished_ssl;
}
- else if( ssl->minor_ver < SSL_MINOR_VERSION_3 )
+ else
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1)
+ if( ssl->minor_ver < SSL_MINOR_VERSION_3 )
{
handshake->tls_prf = tls1_prf;
handshake->calc_verify = ssl_calc_verify_tls;
handshake->calc_finished = ssl_calc_finished_tls;
}
+ else
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
#if defined(POLARSSL_SHA512_C)
- else if( transform->ciphersuite_info->mac ==
- POLARSSL_MD_SHA384 )
+ if( ssl->minor_ver == SSL_MINOR_VERSION_3 &&
+ transform->ciphersuite_info->mac == POLARSSL_MD_SHA384 )
{
handshake->tls_prf = tls_prf_sha384;
handshake->calc_verify = ssl_calc_verify_tls_sha384;
handshake->calc_finished = ssl_calc_finished_tls_sha384;
}
-#endif
else
+#endif
+#if defined(POLARSSL_SHA256_C)
+ if( ssl->minor_ver == SSL_MINOR_VERSION_3 )
{
handshake->tls_prf = tls_prf_sha256;
handshake->calc_verify = ssl_calc_verify_tls_sha256;
handshake->calc_finished = ssl_calc_finished_tls_sha256;
}
+ else
+#endif
+#endif
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
/*
* SSLv3:
@@ -437,7 +471,7 @@
* MD5( premaster + SHA1( 'BB' + premaster + randbytes ) ) +
* MD5( premaster + SHA1( 'CCC' + premaster + randbytes ) )
*
- * TLSv1:
+ * TLSv1+:
* master = PRF( premaster, "master secret", randbytes )[0..47]
*/
if( handshake->resume == 0 )
@@ -502,6 +536,8 @@
{
if( md_info->type != POLARSSL_MD_NONE )
{
+ int ret;
+
if( ( ret = md_init_ctx( &transform->md_ctx_enc, md_info ) ) != 0 )
{
SSL_DEBUG_RET( 1, "md_init_ctx", ret );
@@ -583,16 +619,25 @@
iv_copy_len );
}
+#if defined(POLARSSL_SSL_PROTO_SSL3)
if( ssl->minor_ver == SSL_MINOR_VERSION_0 )
{
memcpy( transform->mac_enc, mac_enc, transform->maclen );
memcpy( transform->mac_dec, mac_dec, transform->maclen );
}
else
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
+ if( ssl->minor_ver >= SSL_MINOR_VERSION_1 )
{
md_hmac_starts( &transform->md_ctx_enc, mac_enc, transform->maclen );
md_hmac_starts( &transform->md_ctx_dec, mac_dec, transform->maclen );
}
+ else
+#endif
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
#if defined(POLARSSL_SSL_HW_RECORD_ACCEL)
if( ssl_hw_record_init != NULL)
@@ -701,6 +746,7 @@
return( 0 );
}
+#if defined(POLARSSL_SSL_PROTO_SSL3)
void ssl_calc_verify_ssl( ssl_context *ssl, unsigned char hash[36] )
{
md5_context md5;
@@ -741,7 +787,9 @@
return;
}
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1)
void ssl_calc_verify_tls( ssl_context *ssl, unsigned char hash[36] )
{
md5_context md5;
@@ -760,7 +808,10 @@
return;
}
+#endif /* POLARSSL_SSL_PROTO_TLS1 || POLARSSL_SSL_PROTO_TLS1_1 */
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA256_C)
void ssl_calc_verify_tls_sha256( ssl_context *ssl, unsigned char hash[32] )
{
sha256_context sha256;
@@ -775,6 +826,7 @@
return;
}
+#endif /* POLARSSL_SHA256_C */
#if defined(POLARSSL_SHA512_C)
void ssl_calc_verify_tls_sha384( ssl_context *ssl, unsigned char hash[48] )
@@ -791,8 +843,10 @@
return;
}
-#endif
+#endif /* POLARSSL_SHA512_C */
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
+#if defined(POLARSSL_SSL_PROTO_SSL3)
/*
* SSLv3.0 MAC functions
*/
@@ -833,6 +887,7 @@
md_update( md_ctx, buf + len, md_size );
md_finish( md_ctx, buf + len );
}
+#endif /* POLARSSL_SSL_PROTO_SSL3 */
/*
* Encryption/decryption functions
@@ -846,6 +901,7 @@
/*
* Add MAC then encrypt
*/
+#if defined(POLARSSL_SSL_PROTO_SSL3)
if( ssl->minor_ver == SSL_MINOR_VERSION_0 )
{
ssl_mac( &ssl->transform_out->md_ctx_enc,
@@ -854,6 +910,10 @@
ssl->out_ctr, ssl->out_msgtype );
}
else
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
+ if( ssl->minor_ver >= SSL_MINOR_VERSION_1 )
{
md_hmac_update( &ssl->transform_out->md_ctx_enc, ssl->out_ctr, 13 );
md_hmac_update( &ssl->transform_out->md_ctx_enc,
@@ -862,6 +922,10 @@
ssl->out_msg + ssl->out_msglen );
md_hmac_reset( &ssl->transform_out->md_ctx_enc );
}
+ else
+#endif
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
SSL_DEBUG_BUF( 4, "computed mac",
ssl->out_msg + ssl->out_msglen, ssl->transform_out->maclen );
@@ -977,6 +1041,7 @@
enc_msglen = ssl->out_msglen;
enc_msg = ssl->out_msg;
+#if defined(POLARSSL_SSL_PROTO_TLS1_1) || defined(POLARSSL_SSL_PROTO_TLS1_2)
/*
* Prepend per-record IV for block cipher in TLS v1.1 and up as per
* Method 1 (6.2.3.2. in RFC4346 and RFC5246)
@@ -1001,6 +1066,7 @@
enc_msglen = ssl->out_msglen;
ssl->out_msglen += ssl->transform_out->ivlen;
}
+#endif /* POLARSSL_SSL_PROTO_TLS1_1 || POLARSSL_SSL_PROTO_TLS1_2 */
SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, "
"including %d bytes of IV and %d bytes of padding",
@@ -1165,8 +1231,10 @@
return( POLARSSL_ERR_SSL_INVALID_MAC );
}
+#if defined(POLARSSL_SSL_PROTO_TLS1_1) || defined(POLARSSL_SSL_PROTO_TLS1_2)
if( ssl->minor_ver >= SSL_MINOR_VERSION_2 )
minlen += ssl->transform_in->ivlen;
+#endif
if( ssl->in_msglen < minlen + ssl->transform_in->ivlen ||
ssl->in_msglen < minlen + ssl->transform_in->maclen + 1 )
@@ -1180,6 +1248,7 @@
dec_msg = ssl->in_msg;
dec_msg_result = ssl->in_msg;
+#if defined(POLARSSL_SSL_PROTO_TLS1_1) || defined(POLARSSL_SSL_PROTO_TLS1_2)
/*
* Initialize for prepended IV for block cipher in TLS v1.1 and up
*/
@@ -1191,6 +1260,7 @@
for( i = 0; i < ssl->transform_in->ivlen; i++ )
ssl->transform_in->iv_dec[i] = ssl->in_iv[i];
}
+#endif /* POLARSSL_SSL_PROTO_TLS1_1 || POLARSSL_SSL_PROTO_TLS1_2 */
switch( ssl->transform_in->ciphersuite_info->cipher )
{
@@ -1242,6 +1312,7 @@
correct = 0;
}
+#if defined(POLARSSL_SSL_PROTO_SSL3)
if( ssl->minor_ver == SSL_MINOR_VERSION_0 )
{
if( padlen > ssl->transform_in->ivlen )
@@ -1255,6 +1326,10 @@
}
}
else
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
+ if( ssl->minor_ver > SSL_MINOR_VERSION_0 )
{
/*
* TLSv1+: always check the padding up to the first failure
@@ -1278,6 +1353,11 @@
#endif
padlen &= correct * 0x1FF;
}
+ else
+#endif /* POLARSSL_SSL_PROTO_TLS1 || POLARSSL_SSL_PROTO_TLS1_1 || \
+ POLARSSL_SSL_PROTO_TLS1_2 */
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
}
SSL_DEBUG_BUF( 4, "raw buffer after decryption",
@@ -1293,6 +1373,7 @@
memcpy( tmp, ssl->in_msg + ssl->in_msglen, ssl->transform_in->maclen );
+#if defined(POLARSSL_SSL_PROTO_SSL3)
if( ssl->minor_ver == SSL_MINOR_VERSION_0 )
{
ssl_mac( &ssl->transform_in->md_ctx_dec,
@@ -1301,6 +1382,10 @@
ssl->in_ctr, ssl->in_msgtype );
}
else
+#endif /* POLARSSL_SSL_PROTO_SSL3 */
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
+ if( ssl->minor_ver > SSL_MINOR_VERSION_0 )
{
/*
* Process MAC and always update for padlen afterwards to make
@@ -1331,6 +1416,11 @@
md_hmac_reset( &ssl->transform_in->md_ctx_dec );
}
+ else
+#endif /* POLARSSL_SSL_PROTO_TLS1 || POLARSSL_SSL_PROTO_TLS1_1 || \
+ POLARSSL_SSL_PROTO_TLS1_2 */
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
SSL_DEBUG_BUF( 4, "message mac", tmp, ssl->transform_in->maclen );
SSL_DEBUG_BUF( 4, "computed mac", ssl->in_msg + ssl->in_msglen,
@@ -1742,13 +1832,17 @@
return( POLARSSL_ERR_SSL_INVALID_RECORD );
}
+#if defined(POLARSSL_SSL_PROTO_SSL3)
if( ssl->minor_ver == SSL_MINOR_VERSION_0 &&
ssl->in_msglen > ssl->transform_in->minlen + SSL_MAX_CONTENT_LEN )
{
SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( POLARSSL_ERR_SSL_INVALID_RECORD );
}
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
/*
* TLS encrypted messages can have up to 256 bytes of padding
*/
@@ -1758,6 +1852,7 @@
SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( POLARSSL_ERR_SSL_INVALID_RECORD );
}
+#endif
}
/*
@@ -2014,6 +2109,7 @@
return( 0 );
}
+#if defined(POLARSSL_SSL_PROTO_SSL3)
/*
* If using SSLv3 and got no cert, send an Alert message
* (otherwise an empty Certificate message will be sent).
@@ -2029,6 +2125,7 @@
SSL_DEBUG_MSG( 2, ( "got no certificate to send" ) );
goto write_msg;
}
+#endif /* POLARSSL_SSL_PROTO_SSL3 */
}
else /* SSL_IS_SERVER */
{
@@ -2079,7 +2176,9 @@
ssl->out_msgtype = SSL_MSG_HANDSHAKE;
ssl->out_msg[0] = SSL_HS_CERTIFICATE;
+#if defined(POLARSSL_SSL_PROTO_SSL3)
write_msg:
+#endif
ssl->state++;
@@ -2127,6 +2226,7 @@
ssl->state++;
+#if defined(POLARSSL_SSL_PROTO_SSL3)
/*
* Check if the client sent an empty certificate
*/
@@ -2147,7 +2247,10 @@
return( POLARSSL_ERR_SSL_NO_CLIENT_CERTIFICATE );
}
}
+#endif /* POLARSSL_SSL_PROTO_SSL3 */
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
if( ssl->endpoint == SSL_IS_SERVER &&
ssl->minor_ver != SSL_MINOR_VERSION_0 )
{
@@ -2165,6 +2268,8 @@
return( 0 );
}
}
+#endif /* POLARSSL_SSL_PROTO_TLS1 || POLARSSL_SSL_PROTO_TLS1_1 || \
+ POLARSSL_SSL_PROTO_TLS1_2 */
if( ssl->in_msgtype != SSL_MSG_HANDSHAKE )
{
@@ -2317,45 +2422,66 @@
void ssl_optimize_checksum( ssl_context *ssl,
const ssl_ciphersuite_t *ciphersuite_info )
{
-#if !defined(POLARSSL_SHA512_C)
((void) ciphersuite_info);
-#endif
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
if( ssl->minor_ver < SSL_MINOR_VERSION_3 )
ssl->handshake->update_checksum = ssl_update_checksum_md5sha1;
-#if defined(POLARSSL_SHA512_C)
- else if( ciphersuite_info->mac == POLARSSL_MD_SHA384 )
- {
- ssl->handshake->update_checksum = ssl_update_checksum_sha384;
- }
-#endif
else
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA512_C)
+ if( ciphersuite_info->mac == POLARSSL_MD_SHA384 )
+ ssl->handshake->update_checksum = ssl_update_checksum_sha384;
+ else
+#endif
+#if defined(POLARSSL_SHA256_C)
+ if( ciphersuite_info->mac != POLARSSL_MD_SHA384 )
ssl->handshake->update_checksum = ssl_update_checksum_sha256;
+ else
+#endif
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
+ /* Should never happen */
+ return;
}
static void ssl_update_checksum_start( ssl_context *ssl,
const unsigned char *buf, size_t len )
{
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
md5_update( &ssl->handshake->fin_md5 , buf, len );
sha1_update( &ssl->handshake->fin_sha1, buf, len );
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA256_C)
sha256_update( &ssl->handshake->fin_sha256, buf, len );
+#endif
#if defined(POLARSSL_SHA512_C)
sha512_update( &ssl->handshake->fin_sha512, buf, len );
#endif
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
}
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
static void ssl_update_checksum_md5sha1( ssl_context *ssl,
const unsigned char *buf, size_t len )
{
md5_update( &ssl->handshake->fin_md5 , buf, len );
sha1_update( &ssl->handshake->fin_sha1, buf, len );
}
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA256_C)
static void ssl_update_checksum_sha256( ssl_context *ssl,
const unsigned char *buf, size_t len )
{
sha256_update( &ssl->handshake->fin_sha256, buf, len );
}
+#endif
#if defined(POLARSSL_SHA512_C)
static void ssl_update_checksum_sha384( ssl_context *ssl,
@@ -2364,7 +2490,9 @@
sha512_update( &ssl->handshake->fin_sha512, buf, len );
}
#endif
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
+#if defined(POLARSSL_SSL_PROTO_SSL3)
static void ssl_calc_finished_ssl(
ssl_context *ssl, unsigned char *buf, int from )
{
@@ -2444,7 +2572,9 @@
SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
}
+#endif /* POLARSSL_SSL_PROTO_SSL3 */
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1)
static void ssl_calc_finished_tls(
ssl_context *ssl, unsigned char *buf, int from )
{
@@ -2498,7 +2628,10 @@
SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
}
+#endif /* POLARSSL_SSL_PROTO_TLS1 || POLARSSL_SSL_PROTO_TLS1_1 */
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA256_C)
static void ssl_calc_finished_tls_sha256(
ssl_context *ssl, unsigned char *buf, int from )
{
@@ -2543,6 +2676,7 @@
SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
}
+#endif /* POLARSSL_SHA256_C */
#if defined(POLARSSL_SHA512_C)
static void ssl_calc_finished_tls_sha384(
@@ -2589,7 +2723,8 @@
SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
}
-#endif
+#endif /* POLARSSL_SHA512_C */
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
void ssl_handshake_wrapup( ssl_context *ssl )
{
@@ -2828,12 +2963,19 @@
memset( ssl->transform_negotiate, 0, sizeof(ssl_transform) );
memset( ssl->session_negotiate, 0, sizeof(ssl_session) );
+#if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_1)
md5_starts( &ssl->handshake->fin_md5 );
sha1_starts( &ssl->handshake->fin_sha1 );
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1_2)
+#if defined(POLARSSL_SHA256_C)
sha256_starts( &ssl->handshake->fin_sha256, 0 );
+#endif
#if defined(POLARSSL_SHA512_C)
sha512_starts( &ssl->handshake->fin_sha512, 1 );
#endif
+#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
ssl->handshake->update_checksum = ssl_update_checksum_start;
ssl->handshake->sig_alg = SSL_HASH_SHA1;
@@ -2864,10 +3006,10 @@
ssl->rsa_key_len = ssl_rsa_key_len;
#endif
- ssl->min_major_ver = SSL_MAJOR_VERSION_3;
- ssl->min_minor_ver = SSL_MINOR_VERSION_0;
- ssl->max_major_ver = SSL_MAJOR_VERSION_3;
- ssl->max_minor_ver = SSL_MINOR_VERSION_3;
+ ssl->min_major_ver = SSL_MIN_MAJOR_VERSION;
+ ssl->min_minor_ver = SSL_MIN_MINOR_VERSION;
+ ssl->max_major_ver = SSL_MAX_MAJOR_VERSION;
+ ssl->max_minor_ver = SSL_MAX_MINOR_VERSION;
ssl_set_ciphersuites( ssl, ssl_list_ciphersuites() );
@@ -3248,14 +3390,22 @@
void ssl_set_max_version( ssl_context *ssl, int major, int minor )
{
- ssl->max_major_ver = major;
- ssl->max_minor_ver = minor;
+ if( major >= SSL_MIN_MAJOR_VERSION && major <= SSL_MAX_MAJOR_VERSION &&
+ minor >= SSL_MIN_MINOR_VERSION && minor <= SSL_MAX_MINOR_VERSION )
+ {
+ ssl->max_major_ver = major;
+ ssl->max_minor_ver = minor;
+ }
}
void ssl_set_min_version( ssl_context *ssl, int major, int minor )
{
- ssl->min_major_ver = major;
- ssl->min_minor_ver = minor;
+ if( major >= SSL_MIN_MAJOR_VERSION && major <= SSL_MAX_MAJOR_VERSION &&
+ minor >= SSL_MIN_MINOR_VERSION && minor <= SSL_MAX_MINOR_VERSION )
+ {
+ ssl->min_major_ver = major;
+ ssl->min_minor_ver = minor;
+ }
}
#if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
@@ -3516,6 +3666,7 @@
{
SSL_DEBUG_MSG( 3, ( "ignoring renegotiation, sending alert" ) );
+#if defined(POLARSSL_SSL_PROTO_SSL3)
if( ssl->minor_ver == SSL_MINOR_VERSION_0 )
{
/*
@@ -3525,6 +3676,10 @@
return( ret );
}
else
+#endif
+#if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
+ defined(POLARSSL_SSL_PROTO_TLS1_2)
+ if( ssl->minor_ver >= SSL_MINOR_VERSION_1 )
{
if( ( ret = ssl_send_alert_message( ssl,
SSL_ALERT_LEVEL_WARNING,
@@ -3533,6 +3688,10 @@
return( ret );
}
}
+ else
+#endif
+ /* Should never happen */
+ return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
}
else
{
