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Merge pull request #4977 from xkqian/generic_fetch_handshake_msg

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Add fetch_hand_message in generic
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Ronald Cron 2021-09-30 15:30:00 +02:00 committed by GitHub
commit d8ca055073
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2 changed files with 46 additions and 0 deletions
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8
library/ssl_misc.h
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@ -1489,6 +1489,14 @@ static inline void mbedtls_ssl_handshake_set_state( mbedtls_ssl_context *ssl,
ssl->state = ( int ) state;
}
/*
* Fetch TLS 1.3 handshake message header
*/
int mbedtls_ssl_tls1_3_fetch_handshake_msg( mbedtls_ssl_context *ssl,
unsigned hs_type,
unsigned char **buf,
size_t *buf_len );
/*
* Write TLS 1.3 handshake message header
*/

38
library/ssl_tls13_generic.c
View File

@ -28,6 +28,44 @@
#include "ssl_misc.h"
int mbedtls_ssl_tls1_3_fetch_handshake_msg( mbedtls_ssl_context *ssl,
unsigned hs_type,
unsigned char **buf,
size_t *buflen )
{
int ret;
if( ( ret = mbedtls_ssl_read_record( ssl, 0 ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
goto cleanup;
}
if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ||
ssl->in_msg[0] != hs_type )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "Receive unexpected handshake message." ) );
MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE,
MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
ret = MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE;
goto cleanup;
}
/*
* Jump handshake header (4 bytes, see Section 4 of RFC 8446).
* ...
* HandshakeType msg_type;
* uint24 length;
* ...
*/
*buf = ssl->in_msg + 4;
*buflen = ssl->in_hslen - 4;
cleanup:
return( ret );
}
int mbedtls_ssl_tls13_start_handshake_msg( mbedtls_ssl_context *ssl,
unsigned hs_type,
unsigned char **buf,