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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 PolarSSL Backend
*/
#ifndef SSL_POLARSSL_H_
#define SSL_POLARSSL_H_
#include <polarssl/havege.h>
#include <polarssl/ssl.h>
#include "config.h"
#if defined(ENABLE_PKCS11)
#include <polarssl/pkcs11.h>
#endif
typedef struct _buffer_entry buffer_entry;
struct _buffer_entry {
size_t length;
uint8_t *data;
buffer_entry *next_block;
};
typedef struct {
size_t data_start;
buffer_entry *first_block;
buffer_entry *last_block;
} endless_buffer;
/**
* Structure that wraps the TLS context. Contents differ depending on the
* SSL library used.
*
* Either \c priv_key_pkcs11 or \c priv_key must be filled in.
*/
struct tls_root_ctx {
bool initialised; /**< True if the context has been initialised */
int endpoint; /**< Whether or not this is a server or a client */
havege_state *hs; /**< HAVEGE random number state */
dhm_context *dhm_ctx; /**< Diffie-Helmann-Merkle context */
x509_cert *crt_chain; /**< Local Certificate chain */
x509_cert *ca_chain; /**< CA chain for remote verification */
rsa_context *priv_key; /**< Local private key */
#if defined(ENABLE_PKCS11)
pkcs11_context *priv_key_pkcs11; /**< PKCS11 private key */
#endif
int * allowed_ciphers; /**< List of allowed ciphers for this connection */
};
struct key_state_ssl {
ssl_context *ctx;
ssl_session *ssn;
endless_buffer *ct_in;
endless_buffer *ct_out;
};
#endif /* SSL_POLARSSL_H_ */
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