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Improve debugging output of client-side CID extension parsing

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This commit is contained in:
Hanno Becker 2019-05-03 12:46:59 +01:00
parent 19976b5345
commit 8f68f87382
1 changed files with 15 additions and 9 deletions
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24
library/ssl_cli.c
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@ -1254,13 +1254,19 @@ static int ssl_parse_cid_ext( mbedtls_ssl_context *ssl,
if( /* CID extension only makes sense in DTLS */
ssl->conf->transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM ||
/* The server must only send the CID extension if we have offered it. */
ssl->negotiate_cid == MBEDTLS_SSL_CID_DISABLED ||
/* CID extension must at least contain the length byte */
len < 1 )
ssl->negotiate_cid == MBEDTLS_SSL_CID_DISABLED )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "non-matching CID extension" ) );
MBEDTLS_SSL_DEBUG_MSG( 1, ( "CID extension unexpected" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
}
if( len == 0 )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "CID extension invalid" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
}
@ -1269,17 +1275,17 @@ static int ssl_parse_cid_ext( mbedtls_ssl_context *ssl,
if( peer_cid_len > MBEDTLS_SSL_CID_OUT_LEN_MAX )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "non-matching CID extension" ) );
MBEDTLS_SSL_DEBUG_MSG( 1, ( "CID extension invalid" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
}
if( len != peer_cid_len )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "non-matching CID extension" ) );
MBEDTLS_SSL_DEBUG_MSG( 1, ( "CID extension invalid" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
}