Remove min/maj version from SSL context if only one version enabled

If the minor/major version is enforced at compile-time, the `major_ver`
and `minor_ver` fields in `mbedtls_ssl_context` are redundant and can
be removed.
This commit is contained in:
Hanno Becker 2019-06-12 14:43:01 +01:00
parent 2881d80138
commit 381eaa5976
4 changed files with 39 additions and 0 deletions

View file

@ -63,6 +63,18 @@
#include "platform_time.h" #include "platform_time.h"
#endif #endif
#if defined(MBEDTLS_SSL_CONF_MAX_MAJOR_VER) && \
defined(MBEDTLS_SSL_CONF_MIN_MAJOR_VER) && \
( MBEDTLS_SSL_CONF_MAX_MAJOR_VER == MBEDTLS_SSL_CONF_MIN_MAJOR_VER )
#define MBEDTLS_SSL_CONF_FIXED_MAJOR_VER MBEDTLS_SSL_CONF_MIN_MAJOR_VER
#endif
#if defined(MBEDTLS_SSL_CONF_MAX_MINOR_VER) && \
defined(MBEDTLS_SSL_CONF_MIN_MINOR_VER) && \
( MBEDTLS_SSL_CONF_MAX_MINOR_VER == MBEDTLS_SSL_CONF_MIN_MINOR_VER )
#define MBEDTLS_SSL_CONF_FIXED_MINOR_VER MBEDTLS_SSL_CONF_MIN_MINOR_VER
#endif
/* /*
* SSL Error codes * SSL Error codes
*/ */
@ -1229,8 +1241,12 @@ struct mbedtls_ssl_context
renego_max_records is < 0 */ renego_max_records is < 0 */
#endif /* MBEDTLS_SSL_RENEGOTIATION */ #endif /* MBEDTLS_SSL_RENEGOTIATION */
#if !defined(MBEDTLS_SSL_CONF_FIXED_MAJOR_VER)
int major_ver; /*!< equal to MBEDTLS_SSL_MAJOR_VERSION_3 */ int major_ver; /*!< equal to MBEDTLS_SSL_MAJOR_VERSION_3 */
#endif /* !MBEDTLS_SSL_CONF_FIXED_MAJOR_VER */
#if !defined(MBEDTLS_SSL_CONF_FIXED_MINOR_VER)
int minor_ver; /*!< either 0 (SSL3) or 1 (TLS1.0) */ int minor_ver; /*!< either 0 (SSL3) or 1 (TLS1.0) */
#endif /* !MBEDTLS_SSL_CONF_FIXED_MINOR_VER */
#if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT)
unsigned badmac_seen; /*!< records with a bad MAC received */ unsigned badmac_seen; /*!< records with a bad MAC received */

View file

@ -962,12 +962,22 @@ int mbedtls_ssl_check_sig_hash( const mbedtls_ssl_context *ssl,
static inline int mbedtls_ssl_get_minor_ver( mbedtls_ssl_context const *ssl ) static inline int mbedtls_ssl_get_minor_ver( mbedtls_ssl_context const *ssl )
{ {
#if !defined(MBEDTLS_SSL_CONF_FIXED_MINOR_VER)
return( ssl->minor_ver ); return( ssl->minor_ver );
#else /* !MBEDTLS_SSL_CONF_FIXED_MINOR_VER */
((void) ssl);
return( MBEDTLS_SSL_CONF_FIXED_MINOR_VER );
#endif /* MBEDTLS_SSL_CONF_FIXED_MINOR_VER */
} }
static inline int mbedtls_ssl_get_major_ver( mbedtls_ssl_context const *ssl ) static inline int mbedtls_ssl_get_major_ver( mbedtls_ssl_context const *ssl )
{ {
#if !defined(MBEDTLS_SSL_CONF_FIXED_MAJOR_VER)
return( ssl->major_ver ); return( ssl->major_ver );
#else /* !MBEDTLS_SSL_CONF_FIXED_MAJOR_VER */
((void) ssl);
return( MBEDTLS_SSL_CONF_FIXED_MAJOR_VER );
#endif /* MBEDTLS_SSL_CONF_FIXED_MAJOR_VER */
} }
#if defined(MBEDTLS_X509_CRT_PARSE_C) #if defined(MBEDTLS_X509_CRT_PARSE_C)

View file

@ -850,8 +850,12 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
if( mbedtls_ssl_get_renego_status( ssl ) == MBEDTLS_SSL_INITIAL_HANDSHAKE ) if( mbedtls_ssl_get_renego_status( ssl ) == MBEDTLS_SSL_INITIAL_HANDSHAKE )
{ {
#if !defined(MBEDTLS_SSL_CONF_FIXED_MAJOR_VER)
ssl->major_ver = mbedtls_ssl_conf_get_min_major_ver( ssl->conf ); ssl->major_ver = mbedtls_ssl_conf_get_min_major_ver( ssl->conf );
#endif /* !MBEDTLS_SSL_CONF_FIXED_MAJOR_VER */
#if !defined(MBEDTLS_SSL_CONF_FIXED_MINOR_VER)
ssl->minor_ver = mbedtls_ssl_conf_get_min_minor_ver( ssl->conf ); ssl->minor_ver = mbedtls_ssl_conf_get_min_minor_ver( ssl->conf );
#endif /* !MBEDTLS_SSL_CONF_FIXED_MINOR_VER */
} }
if( mbedtls_ssl_conf_get_max_major_ver( ssl->conf ) == 0 ) if( mbedtls_ssl_conf_get_max_major_ver( ssl->conf ) == 0 )
@ -1743,8 +1747,13 @@ static int ssl_parse_server_hello( mbedtls_ssl_context *ssl )
return( MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION ); return( MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION );
} }
#if !defined(MBEDTLS_SSL_CONF_FIXED_MINOR_VER)
ssl->minor_ver = minor_ver; ssl->minor_ver = minor_ver;
#endif /* !MBEDTLS_SSL_CONF_FIXED_MINOR_VER */
#if !defined(MBEDTLS_SSL_CONF_FIXED_MAJOR_VER)
ssl->major_ver = major_ver; ssl->major_ver = major_ver;
#endif /* !MBEDTLS_SSL_CONF_FIXED_MAJOR_VER */
} }
MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, current time: %lu", MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, current time: %lu",

View file

@ -1654,8 +1654,12 @@ read_record_header:
else if( minor_ver > mbedtls_ssl_conf_get_max_minor_ver( ssl->conf ) ) else if( minor_ver > mbedtls_ssl_conf_get_max_minor_ver( ssl->conf ) )
minor_ver = mbedtls_ssl_conf_get_max_minor_ver( ssl->conf ); minor_ver = mbedtls_ssl_conf_get_max_minor_ver( ssl->conf );
#if !defined(MBEDTLS_SSL_CONF_FIXED_MAJOR_VER)
ssl->major_ver = major_ver; ssl->major_ver = major_ver;
#endif /* MBEDTLS_SSL_CONF_FIXED_MAJOR_VER */
#if !defined(MBEDTLS_SSL_CONF_FIXED_MINOR_VER)
ssl->minor_ver = minor_ver; ssl->minor_ver = minor_ver;
#endif /* MBEDTLS_SSL_CONF_FIXED_MINOR_VER */
} }
/* /*