1/* 2 * OpenVPN -- An application to securely tunnel IP networks 3 * over a single TCP/UDP port, with support for SSL/TLS-based 4 * session authentication and key exchange, 5 * packet encryption, packet authentication, and 6 * packet compression. 7 * 8 * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net> 9 * Copyright (C) 2010 Fox Crypto B.V. <openvpn@fox-it.com> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 13 * as published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program (see the file COPYING included with this 22 * distribution); if not, write to the Free Software Foundation, Inc., 23 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 24 */ 25 26/** 27 * @file Control Channel OpenSSL Backend 28 */ 29 30#ifndef SSL_OPENSSL_H_ 31#define SSL_OPENSSL_H_ 32 33#include <openssl/ssl.h> 34 35/** 36 * Structure that wraps the TLS context. Contents differ depending on the 37 * SSL library used. 38 */ 39struct tls_root_ctx { 40 SSL_CTX *ctx; 41}; 42 43struct key_state_ssl { 44 SSL *ssl; /* SSL object -- new obj created for each new key */ 45 BIO *ssl_bio; /* read/write plaintext from here */ 46 BIO *ct_in; /* write ciphertext to here */ 47 BIO *ct_out; /* read ciphertext from here */ 48}; 49 50/** 51 * Allocate space in SSL objects in which to store a struct tls_session 52 * pointer back to parent. 53 */ 54extern int mydata_index; /* GLOBAL */ 55 56void openssl_set_mydata_index (void); 57 58#endif /* SSL_OPENSSL_H_ */ 59