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/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
/**
* @defgroup tls_socket tls_socket
* @{ @ingroup libtls
*/
#ifndef TLS_SOCKET_H_
#define TLS_SOCKET_H_
#include "tls.h"
typedef struct tls_socket_t tls_socket_t;
/**
* TLS secured socket.
*
* Wraps a blocking (socket) file descriptor for a reliable transport into a
* TLS secured socket. TLS negotiation happens on demand, certificates and
* private keys are fetched from any registered credential set.
*/
struct tls_socket_t {
/**
* Read data from secured socket, return allocated chunk.
*
* This call is blocking, you may use select() on the underlying socket to
* wait for data. If the there was non-application data available, the
* read function can return an empty chunk.
*
* @param data pointer to allocate received data
* @return TRUE if data received successfully
*/
bool (*read)(tls_socket_t *this, chunk_t *data);
/**
* Write a chunk of data over the secured socket.
*
* @param data data to send
* @return TRUE if data sent successfully
*/
bool (*write)(tls_socket_t *this, chunk_t data);
/**
* Read/write plain data from file descriptor.
*
* This call is blocking, but a thread cancellation point. Data is
* exchanged until one of the sockets gets closed or an error occurs.
*
* @param rfd file descriptor to read plain data from
* @param wfd file descriptor to write plain data to
* @return TRUE if data exchanged successfully
*/
bool (*splice)(tls_socket_t *this, int rfd, int wfd);
/**
* Get the underlying file descriptor passed to the constructor.
*
* @return file descriptor
*/
int (*get_fd)(tls_socket_t *this);
/**
* Destroy a tls_socket_t.
*/
void (*destroy)(tls_socket_t *this);
};
/**
* Create a tls_socket instance.
*
* @param is_server TRUE to act as TLS server
* @param server server identity
* @param peer client identity, NULL for no client authentication
* @param fd socket to read/write from
* @param cache session cache to use, or NULL
* @return TLS socket wrapper
*/
tls_socket_t *tls_socket_create(bool is_server, identification_t *server,
identification_t *peer, int fd, tls_cache_t *cache);
#endif /** TLS_SOCKET_H_ @}*/
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