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Merge pull request #4977 from xkqian/generic_fetch_handshake_msg
Add fetch_hand_message in generic
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commit
d8ca055073
@ -1489,6 +1489,14 @@ static inline void mbedtls_ssl_handshake_set_state( mbedtls_ssl_context *ssl,
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ssl->state = ( int ) state;
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}
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/*
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* Fetch TLS 1.3 handshake message header
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*/
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int mbedtls_ssl_tls1_3_fetch_handshake_msg( mbedtls_ssl_context *ssl,
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unsigned hs_type,
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unsigned char **buf,
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size_t *buf_len );
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/*
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* Write TLS 1.3 handshake message header
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*/
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@ -28,6 +28,44 @@
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#include "ssl_misc.h"
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int mbedtls_ssl_tls1_3_fetch_handshake_msg( mbedtls_ssl_context *ssl,
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unsigned hs_type,
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unsigned char **buf,
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size_t *buflen )
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{
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int ret;
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if( ( ret = mbedtls_ssl_read_record( ssl, 0 ) ) != 0 )
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{
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MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
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goto cleanup;
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}
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if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ||
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ssl->in_msg[0] != hs_type )
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{
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MBEDTLS_SSL_DEBUG_MSG( 1, ( "Receive unexpected handshake message." ) );
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MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE,
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MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
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ret = MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE;
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goto cleanup;
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}
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/*
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* Jump handshake header (4 bytes, see Section 4 of RFC 8446).
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* ...
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* HandshakeType msg_type;
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* uint24 length;
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* ...
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*/
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*buf = ssl->in_msg + 4;
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*buflen = ssl->in_hslen - 4;
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cleanup:
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return( ret );
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}
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int mbedtls_ssl_tls13_start_handshake_msg( mbedtls_ssl_context *ssl,
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unsigned hs_type,
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unsigned char **buf,
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