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Merge pull request #4852 from hanno-arm/unify_cli_srv_hs_step

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Share preparatory code between client and server handshake steps
This commit is contained in:
Manuel Pégourié-Gonnard 2021-08-12 12:24:51 +02:00 committed by GitHub
commit 2fb897ecf9
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3 changed files with 30 additions and 32 deletions
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15
library/ssl_cli.c
View File

@ -4210,23 +4210,8 @@ int mbedtls_ssl_handshake_client_step( mbedtls_ssl_context *ssl )
{ {
int ret = 0; int ret = 0;
if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER || ssl->handshake == NULL )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
MBEDTLS_SSL_DEBUG_MSG( 2, ( "client state: %d", ssl->state ) ); MBEDTLS_SSL_DEBUG_MSG( 2, ( "client state: %d", ssl->state ) );
if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 )
return( ret );
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING )
{
if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
return( ret );
}
#endif /* MBEDTLS_SSL_PROTO_DTLS */
/* Change state now, so that it is right in mbedtls_ssl_read_record(), used /* Change state now, so that it is right in mbedtls_ssl_read_record(), used
* by DTLS for dropping out-of-sequence ChangeCipherSpec records */ * by DTLS for dropping out-of-sequence ChangeCipherSpec records */
#if defined(MBEDTLS_SSL_SESSION_TICKETS) #if defined(MBEDTLS_SSL_SESSION_TICKETS)

15
library/ssl_srv.c
View File

@ -4258,23 +4258,8 @@ int mbedtls_ssl_handshake_server_step( mbedtls_ssl_context *ssl )
{ {
int ret = 0; int ret = 0;
if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER || ssl->handshake == NULL )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
MBEDTLS_SSL_DEBUG_MSG( 2, ( "server state: %d", ssl->state ) ); MBEDTLS_SSL_DEBUG_MSG( 2, ( "server state: %d", ssl->state ) );
if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 )
return( ret );
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING )
{
if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
return( ret );
}
#endif /* MBEDTLS_SSL_PROTO_DTLS */
switch( ssl->state ) switch( ssl->state )
{ {
case MBEDTLS_SSL_HELLO_REQUEST: case MBEDTLS_SSL_HELLO_REQUEST:

32
library/ssl_tls.c
View File

@ -5130,12 +5130,40 @@ int mbedtls_ssl_session_load( mbedtls_ssl_session *session,
/* /*
* Perform a single step of the SSL handshake * Perform a single step of the SSL handshake
*/ */
static int ssl_prepare_handshake_step( mbedtls_ssl_context *ssl )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 )
return( ret );
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING )
{
if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
return( ret );
}
#endif /* MBEDTLS_SSL_PROTO_DTLS */
return( ret );
}
int mbedtls_ssl_handshake_step( mbedtls_ssl_context *ssl ) int mbedtls_ssl_handshake_step( mbedtls_ssl_context *ssl )
{ {
int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE; int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( ssl == NULL || ssl->conf == NULL ) if( ssl == NULL ||
ssl->conf == NULL ||
ssl->handshake == NULL ||
ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER )
{
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
}
ret = ssl_prepare_handshake_step( ssl );
if( ret != 0 )
return( ret );
#if defined(MBEDTLS_SSL_CLI_C) #if defined(MBEDTLS_SSL_CLI_C)
if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT ) if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )