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Adapt ssl_prepare_record_content() to use SSL record structure

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Hanno Becker 2019-07-11 13:07:45 +01:00 committed by Manuel Pégourié-Gonnard
parent 9babbf7e75
commit a89610aaf2
1 changed files with 13 additions and 29 deletions
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42
library/ssl_tls.c
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@ -4991,12 +4991,13 @@ static int ssl_check_client_reconnect( mbedtls_ssl_context *ssl )
/*
* If applicable, decrypt (and decompress) record content
*/
static int ssl_prepare_record_content( mbedtls_ssl_context *ssl )
static int ssl_prepare_record_content( mbedtls_ssl_context *ssl,
mbedtls_record *rec )
{
int ret, done = 0;
MBEDTLS_SSL_DEBUG_BUF( 4, "input record from network",
ssl->in_hdr, mbedtls_ssl_in_hdr_len( ssl ) + ssl->in_msglen );
rec->buf, rec->buf_len );
#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
if( mbedtls_ssl_hw_record_read != NULL )
@ -5016,25 +5017,8 @@ static int ssl_prepare_record_content( mbedtls_ssl_context *ssl )
#endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */
if( !done && ssl->transform_in != NULL )
{
mbedtls_record rec;
rec.buf = ssl->in_iv;
rec.buf_len = MBEDTLS_SSL_IN_BUFFER_LEN
- ( ssl->in_iv - ssl->in_buf );
rec.data_len = ssl->in_msglen;
rec.data_offset = 0;
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID )
rec.cid_len = (uint8_t)( ssl->in_len - ssl->in_cid );
memcpy( rec.cid, ssl->in_cid, rec.cid_len );
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
memcpy( &rec.ctr[0], ssl->in_ctr, 8 );
mbedtls_ssl_write_version( mbedtls_ssl_get_major_ver( ssl ),
mbedtls_ssl_get_minor_ver( ssl ),
ssl->conf->transport, rec.ver );
rec.type = ssl->in_msgtype;
if( ( ret = mbedtls_ssl_decrypt_buf( ssl, ssl->transform_in,
&rec ) ) != 0 )
rec ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "ssl_decrypt_buf", ret );
@ -5051,24 +5035,24 @@ static int ssl_prepare_record_content( mbedtls_ssl_context *ssl )
return( ret );
}
if( ssl->in_msgtype != rec.type )
if( ssl->in_msgtype != rec->type )
{
MBEDTLS_SSL_DEBUG_MSG( 4, ( "record type after decrypt (before %d): %d",
ssl->in_msgtype, rec.type ) );
ssl->in_msgtype, rec->type ) );
}
/* The record content type may change during decryption,
* so re-read it. */
ssl->in_msgtype = rec.type;
ssl->in_msgtype = rec->type;
/* Also update the input buffer, because unfortunately
* the server-side ssl_parse_client_hello() reparses the
* record header when receiving a ClientHello initiating
* a renegotiation. */
ssl->in_hdr[0] = rec.type;
ssl->in_msg = rec.buf + rec.data_offset;
ssl->in_msglen = rec.data_len;
ssl->in_len[0] = (unsigned char)( rec.data_len >> 8 );
ssl->in_len[1] = (unsigned char)( rec.data_len );
ssl->in_hdr[0] = rec->type;
ssl->in_msg = rec->buf + rec->data_offset;
ssl->in_msglen = rec->data_len;
ssl->in_len[0] = (unsigned char)( rec->data_len >> 8 );
ssl->in_len[1] = (unsigned char)( rec->data_len );
MBEDTLS_SSL_DEBUG_BUF( 4, "input payload after decrypt",
ssl->in_msg, ssl->in_msglen );
@ -5946,7 +5930,7 @@ static int ssl_get_next_record( mbedtls_ssl_context *ssl )
* Decrypt record contents.
*/
if( ( ret = ssl_prepare_record_content( ssl ) ) != 0 )
if( ( ret = ssl_prepare_record_content( ssl, &rec ) ) != 0 )
{
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) )