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Add retransmission of HelloRequest

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Manuel Pégourié-Gonnard 2014-10-15 13:52:48 +02:00 committed by Paul Bakker
parent a6ace04c5c
commit 26a4cf63ec
1 changed files with 39 additions and 5 deletions
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40
library/ssl_tls.c
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@ -1889,6 +1889,10 @@ static int ssl_decompress_buf( ssl_context *ssl )
} }
#endif /* POLARSSL_ZLIB_SUPPORT */ #endif /* POLARSSL_ZLIB_SUPPORT */
#if defined(POLARSSL_SSL_SRV_C)
static int ssl_write_hello_request( ssl_context *ssl );
#endif
/* /*
* Fill the input message buffer by appending data to it. * Fill the input message buffer by appending data to it.
* The amount of data already fetched is in ssl->in_left. * The amount of data already fetched is in ssl->in_left.
@ -2037,6 +2041,19 @@ int ssl_fetch_input( ssl_context *ssl, size_t nb_want )
return( POLARSSL_ERR_NET_WANT_READ ); return( POLARSSL_ERR_NET_WANT_READ );
} }
#if defined(POLARSSL_SSL_SRV_C)
else if( ssl->endpoint == SSL_IS_SERVER &&
ssl->renegotiation == SSL_RENEGOTIATION_PENDING )
{
if( ( ret = ssl_write_hello_request( ssl ) ) != 0 )
{
SSL_DEBUG_RET( 1, "ssl_write_hello_request", ret );
return( ret );
}
return( POLARSSL_ERR_NET_WANT_READ );
}
#endif /* POLARSSL_SSL_SRV_C */
} }
if( ret < 0 ) if( ret < 0 )
@ -5722,16 +5739,18 @@ int ssl_read( ssl_context *ssl, unsigned char *buf, size_t len )
SSL_DEBUG_MSG( 2, ( "=> read" ) ); SSL_DEBUG_MSG( 2, ( "=> read" ) );
#if defined(POLARSSL_SSL_PROTO_DTLS) #if defined(POLARSSL_SSL_PROTO_DTLS)
if( ssl->transport == SSL_TRANSPORT_DATAGRAM && if( ssl->transport == SSL_TRANSPORT_DATAGRAM )
ssl->handshake != NULL &&
ssl->handshake->retransmit_state == SSL_RETRANS_SENDING )
{ {
if( ( ret = ssl_flush_output( ssl ) ) != 0 ) if( ( ret = ssl_flush_output( ssl ) ) != 0 )
return( ret ); return( ret );
if( ssl->handshake != NULL &&
ssl->handshake->retransmit_state == SSL_RETRANS_SENDING )
{
if( ( ret = ssl_resend( ssl ) ) != 0 ) if( ( ret = ssl_resend( ssl ) ) != 0 )
return( ret ); return( ret );
} }
}
#endif #endif
if( ssl->state != SSL_HANDSHAKE_OVER ) if( ssl->state != SSL_HANDSHAKE_OVER )
@ -5912,6 +5931,21 @@ int ssl_read( ssl_context *ssl, unsigned char *buf, size_t len )
* except if handshake (renegotiation) is in progress */ * except if handshake (renegotiation) is in progress */
if( ssl->state == SSL_HANDSHAKE_OVER ) if( ssl->state == SSL_HANDSHAKE_OVER )
ssl_set_timer( ssl, 0 ); ssl_set_timer( ssl, 0 );
/* If we requested renego but received AppData, resend HelloRequest.
* Do it now, after setting in_offt, to avoid taking this branch
* again if ssl_write_hello_request() returns WANT_WRITE */
#if defined(POLARSSL_SSL_SRV_C)
if( ssl->endpoint == SSL_IS_SERVER &&
ssl->renegotiation == SSL_RENEGOTIATION_PENDING )
{
if( ( ret = ssl_write_hello_request( ssl ) ) != 0 )
{
SSL_DEBUG_RET( 1, "ssl_write_hello_request", ret );
return( ret );
}
}
#endif /* POLARSSL_SSL_SRV_C */
#endif #endif
} }