add dummy client hello process
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 368b557..d619d80 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -26,11 +26,58 @@
#if defined(MBEDTLS_SSL_CLI_C)
#include "ssl_misc.h"
+#include <mbedtls/debug.h>
+
+static int ssl_client_hello_process( mbedtls_ssl_context* ssl );
int mbedtls_ssl_handshake_client_step_tls1_3( mbedtls_ssl_context *ssl )
{
- ((void) ssl);
- return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+ int ret = 0;
+
+ if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER || ssl->handshake == NULL )
+ {
+ MBEDTLS_SSL_DEBUG_MSG( 2, ( "Handshake completed but ssl->handshake is NULL.\n" ) );
+ return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+ }
+
+ MBEDTLS_SSL_DEBUG_MSG( 2, ( "client state: %d", ssl->state ) );
+
+ switch( ssl->state )
+ {
+ case MBEDTLS_SSL_HELLO_REQUEST:
+ mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_HELLO );
+ break;
+
+ case MBEDTLS_SSL_CLIENT_HELLO:
+ ret = ssl_client_hello_process( ssl );
+ break;
+
+ case MBEDTLS_SSL_SERVER_HELLO:
+ // Stop here : we haven't finished whole flow
+ ret=MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
+ mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_ENCRYPTED_EXTENSIONS );
+ break;
+
+ default:
+ MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
+ return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+ }
+
+ return( ret );
+}
+
+static int ssl_client_hello_process( mbedtls_ssl_context* ssl )
+{
+ int ret = 0;
+
+ MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write client hello" ) );
+
+ mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_HELLO );
+
+ MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write client hello" ) );
+ /* client_hello_process haven't finished */
+ ret=MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
+ return ret;
}
#endif /* MBEDTLS_SSL_CLI_C */