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/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single TCP/UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
* Copyright (C) 2010 Fox Crypto B.V. <openvpn@fox-it.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* @file Control Channel SSL library backend module
*/
#ifndef SSL_BACKEND_H_
#define SSL_BACKEND_H_
#include "buffer.h"
#ifdef USE_OPENSSL
#include "ssl_openssl.h"
#endif
/*
*
* Functions implemented in ssl.c for use by the backend SSL library
*
*/
/*
*
* Functions used in ssl.c which must be implemented by the backend SSL library
*
*/
/**
* Perform any static initialisation necessary by the library.
* Called on OpenVPN initialisation
*/
void tls_init_lib();
/**
* Free any global SSL library-specific data structures.
*/
void tls_free_lib();
/**
* Clear the underlying SSL library's error state.
*/
void tls_clear_error();
/*
* Show the TLS ciphers that are available for us to use in the OpenSSL
* library.
*/
void show_available_tls_ciphers ();
#endif /* SSL_BACKEND_H_ */
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