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Write new DTLS handshake fields correctly

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Manuel Pégourié-Gonnard 2014-02-18 18:50:02 +01:00 • committed by Paul Bakker
parent ce441b3442
commit e89bcf05da
3 changed files with 36 additions and 7 deletions
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16
library/ssl_srv.c
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@ -1203,6 +1203,8 @@ static int ssl_parse_client_hello( ssl_context *ssl )
else
n = ssl->in_msglen;
SSL_DEBUG_BUF( 4, "record contents", buf, n );
ssl->handshake->update_checksum( ssl, buf, n );
/*
@ -1211,7 +1213,17 @@ static int ssl_parse_client_hello( ssl_context *ssl )
#if defined(POLARSSL_SSL_PROTO_DTLS)
if( ssl->transport == SSL_TRANSPORT_DATAGRAM )
{
// TODO: DTLS: actually use the additional fields before removing them!
// TODO: DTLS: check message_seq
/* For now we don't support fragmentation, so make sure
* fragment_offset == 0 and fragment_length == length */
if( ssl->in_msg[6] != 0 || ssl->in_msg[7] != 0 || ssl->in_msg[8] != 0 ||
memcmp( ssl->in_msg + 1, ssl->in_msg + 9, 3 ) != 0 )
{
SSL_DEBUG_MSG( 1, ( "handshake fragmentation not supported" ) );
return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
}
memmove( buf + 4, buf + 12, n - 12 );
n -= 8;
@ -1233,8 +1245,6 @@ static int ssl_parse_client_hello( ssl_context *ssl )
* 42+y . 41+z compression algs
* .. . .. extensions
*/
SSL_DEBUG_BUF( 4, "record contents", buf, n );
SSL_DEBUG_MSG( 3, ( "client hello v3, handshake type: %d",
buf[0] ) );
SSL_DEBUG_MSG( 3, ( "client hello v3, handshake len.: %d",