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 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 12 * as published by the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program (see the file COPYING included with this 21 * distribution); if not, write to the Free Software Foundation, Inc., 22 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25/* 26 * 2004-01-30: Added Socks5 proxy support 27 * (Christof Meerwald, http://cmeerw.org) 28 */ 29 30#ifndef SOCKS_H 31#define SOCKS_H 32 33#ifdef ENABLE_SOCKS 34 35#include "buffer.h" 36 37struct openvpn_sockaddr; 38struct link_socket_actual; 39 40struct socks_proxy_info { 41 bool defined; 42 bool retry; 43 44 char server[128]; 45 int port; 46 char authfile[256]; 47}; 48 49void socks_adjust_frame_parameters (struct frame *frame, int proto); 50 51struct socks_proxy_info *socks_proxy_new (const char *server, 52 int port, 53 const char *authfile, 54 bool retry); 55 56void socks_proxy_close (struct socks_proxy_info *sp); 57 58void establish_socks_proxy_passthru (struct socks_proxy_info *p, 59 socket_descriptor_t sd, /* already open to proxy */ 60 const char *host, /* openvpn server remote */ 61 const int port, /* openvpn server port */ 62 volatile int *signal_received); 63 64void establish_socks_proxy_udpassoc (struct socks_proxy_info *p, 65 socket_descriptor_t ctrl_sd, /* already open to proxy */ 66 socket_descriptor_t udp_sd, 67 struct openvpn_sockaddr *relay_addr, 68 volatile int *signal_received); 69 70void socks_process_incoming_udp (struct buffer *buf, 71 struct link_socket_actual *from); 72 73int socks_process_outgoing_udp (struct buffer *buf, 74 const struct link_socket_actual *to); 75 76#endif 77#endif 78