yuzu-emu/mbedtls
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Add frame for loading and storing buffered messages

Browse source 
This commit introduces the frame for saving and loading
buffered messages within message reading function
mbedtls_ssl_read_record().
This commit is contained in:
Hanno Becker 2018-08-15 14:48:01 +01:00
parent e74d556b43
commit 40f50848fa
2 changed files with 65 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
include/mbedtls/ssl.h
View file

@ -121,6 +121,7 @@
#define MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH -0x6600 /**< Couldn't set the hash for verifying CertificateVerify */
#define MBEDTLS_ERR_SSL_CONTINUE_PROCESSING -0x6580 /**< Internal-only message signaling that further message-processing should be done */
#define MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS -0x6500 /**< The asynchronous operation is not completed yet. */
#define MBEDTLS_ERR_SSL_EARLY_MESSAGE -0x6480 /**< Internal-only message signaling that a message arrived early. */
/*
* Various constants

70
library/ssl_tls.c
View file

@ -4289,6 +4289,12 @@ static int ssl_consume_current_message( mbedtls_ssl_context *ssl );
static int ssl_get_next_record( mbedtls_ssl_context *ssl );
static int ssl_record_is_in_progress( mbedtls_ssl_context *ssl );
#if defined(MBEDTLS_SSL_PROTO_DTLS)
static int ssl_load_buffered_message( mbedtls_ssl_context *ssl );
static int ssl_buffer_message( mbedtls_ssl_context *ssl );
static int ssl_another_record_in_datagram( mbedtls_ssl_context *ssl );
#endif /* MBEDTLS_SSL_PROTO_DTLS */
int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl,
unsigned update_digest )
{
@ -4306,19 +4312,47 @@ int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl,
if( ssl_record_is_in_progress( ssl ) == 0 )
{
ret = ssl_get_next_record( ssl );
if( ret == MBEDTLS_ERR_SSL_CONTINUE_PROCESSING )
continue;
#if defined(MBEDTLS_SSL_PROTO_DTLS)
int have_buffered = 0;
if( ret != 0 )
/* We only check for buffered messages if the
* current datagram is fully consumed. */
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
ssl_another_record_in_datagram( ssl ) == 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record_layer" ), ret );
return( ret );
if( ssl_load_buffered_message( ssl ) == 0 )
have_buffered = 1;
}
if( have_buffered == 0 )
#endif /* MBEDTLS_SSL_PROTO_DTLS */
{
ret = ssl_get_next_record( ssl );
if( ret == MBEDTLS_ERR_SSL_CONTINUE_PROCESSING )
continue;
if( ret != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record_layer" ), ret );
return( ret );
}
}
}
ret = mbedtls_ssl_handle_message_type( ssl );
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ret == MBEDTLS_ERR_SSL_EARLY_MESSAGE )
{
/* Buffer future message */
ret = ssl_buffer_message( ssl );
if( ret != 0 )
return( ret );
ret = MBEDTLS_ERR_SSL_CONTINUE_PROCESSING;
}
#endif /* MBEDTLS_SSL_PROTO_DTLS */
} while( MBEDTLS_ERR_SSL_NON_FATAL == ret ||
MBEDTLS_ERR_SSL_CONTINUE_PROCESSING == ret );
@ -4345,6 +4379,30 @@ int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl,
return( 0 );
}
#if defined(MBEDTLS_SSL_PROTO_DTLS)
static int ssl_another_record_in_datagram( mbedtls_ssl_context *ssl )
{
if( ssl->in_left > ssl->next_record_offset )
return( 1 );
return( 0 );
}
static int ssl_load_buffered_message( mbedtls_ssl_context *ssl )
{
/* No buffering support so far. */
((void) ssl );
return( -1 );
}
static int ssl_buffer_message( mbedtls_ssl_context *ssl )
{
/* No buffering support so far. */
((void) ssl );
return( 0 );
}
#endif /* MBEDTLS_SSL_PROTO_DTLS */
static int ssl_consume_current_message( mbedtls_ssl_context *ssl )
{
/*