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Change how hostname is stored internally

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Manuel Pégourié-Gonnard 2015-05-06 10:47:06 +01:00
parent 2b49445876
commit ba26c24769
3 changed files with 20 additions and 18 deletions
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3
include/mbedtls/ssl.h
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@ -1069,8 +1069,7 @@ struct mbedtls_ssl_context
/* /*
* SNI extension * SNI extension
*/ */
unsigned char *hostname; char *hostname;
size_t hostname_len;
#endif #endif
#if defined(MBEDTLS_SSL_ALPN) #if defined(MBEDTLS_SSL_ALPN)

19
library/ssl_cli.c
View file

@ -65,6 +65,7 @@ static void ssl_write_hostname_ext( mbedtls_ssl_context *ssl,
size_t *olen ) size_t *olen )
{ {
unsigned char *p = buf; unsigned char *p = buf;
size_t hostname_len;
*olen = 0; *olen = 0;
@ -74,6 +75,8 @@ static void ssl_write_hostname_ext( mbedtls_ssl_context *ssl,
MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding server name extension: %s", MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding server name extension: %s",
ssl->hostname ) ); ssl->hostname ) );
hostname_len = strlen( ssl->hostname );
/* /*
* struct { * struct {
* NameType name_type; * NameType name_type;
@ -95,19 +98,19 @@ static void ssl_write_hostname_ext( mbedtls_ssl_context *ssl,
*p++ = (unsigned char)( ( MBEDTLS_TLS_EXT_SERVERNAME >> 8 ) & 0xFF ); *p++ = (unsigned char)( ( MBEDTLS_TLS_EXT_SERVERNAME >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( MBEDTLS_TLS_EXT_SERVERNAME ) & 0xFF ); *p++ = (unsigned char)( ( MBEDTLS_TLS_EXT_SERVERNAME ) & 0xFF );
*p++ = (unsigned char)( ( (ssl->hostname_len + 5) >> 8 ) & 0xFF ); *p++ = (unsigned char)( ( (hostname_len + 5) >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( (ssl->hostname_len + 5) ) & 0xFF ); *p++ = (unsigned char)( ( (hostname_len + 5) ) & 0xFF );
*p++ = (unsigned char)( ( (ssl->hostname_len + 3) >> 8 ) & 0xFF ); *p++ = (unsigned char)( ( (hostname_len + 3) >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( (ssl->hostname_len + 3) ) & 0xFF ); *p++ = (unsigned char)( ( (hostname_len + 3) ) & 0xFF );
*p++ = (unsigned char)( ( MBEDTLS_TLS_EXT_SERVERNAME_HOSTNAME ) & 0xFF ); *p++ = (unsigned char)( ( MBEDTLS_TLS_EXT_SERVERNAME_HOSTNAME ) & 0xFF );
*p++ = (unsigned char)( ( ssl->hostname_len >> 8 ) & 0xFF ); *p++ = (unsigned char)( ( hostname_len >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( ssl->hostname_len ) & 0xFF ); *p++ = (unsigned char)( ( hostname_len ) & 0xFF );
memcpy( p, ssl->hostname, ssl->hostname_len ); memcpy( p, ssl->hostname, hostname_len );
*olen = ssl->hostname_len + 9; *olen = hostname_len + 9;
} }
#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */ #endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */

16
library/ssl_tls.c
View file

@ -5453,23 +5453,24 @@ void mbedtls_ssl_set_curves( mbedtls_ssl_config *conf,
#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
int mbedtls_ssl_set_hostname( mbedtls_ssl_context *ssl, const char *hostname ) int mbedtls_ssl_set_hostname( mbedtls_ssl_context *ssl, const char *hostname )
{ {
size_t hostname_len;
if( hostname == NULL ) if( hostname == NULL )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
ssl->hostname_len = strlen( hostname ); hostname_len = strlen( hostname );
if( ssl->hostname_len + 1 == 0 ) if( hostname_len + 1 == 0 )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
ssl->hostname = mbedtls_malloc( ssl->hostname_len + 1 ); ssl->hostname = mbedtls_malloc( hostname_len + 1 );
if( ssl->hostname == NULL ) if( ssl->hostname == NULL )
return( MBEDTLS_ERR_SSL_MALLOC_FAILED ); return( MBEDTLS_ERR_SSL_MALLOC_FAILED );
memcpy( ssl->hostname, (const unsigned char *) hostname, memcpy( ssl->hostname, hostname, hostname_len );
ssl->hostname_len );
ssl->hostname[ssl->hostname_len] = '\0'; ssl->hostname[hostname_len] = '\0';
return( 0 ); return( 0 );
} }
@ -6562,9 +6563,8 @@ void mbedtls_ssl_free( mbedtls_ssl_context *ssl )
#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
if( ssl->hostname != NULL ) if( ssl->hostname != NULL )
{ {
mbedtls_zeroize( ssl->hostname, ssl->hostname_len ); mbedtls_zeroize( ssl->hostname, strlen( ssl->hostname ) );
mbedtls_free( ssl->hostname ); mbedtls_free( ssl->hostname );
ssl->hostname_len = 0;
} }
#endif #endif