/*
  *  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>

  *
  *  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
  */
 
 /*
  * 2004-01-30: Added Socks5 proxy support
  *   (Christof Meerwald, http://cmeerw.org)
  */
 
 #ifndef SOCKS_H
 #define SOCKS_H
 
 #ifdef ENABLE_SOCKS
 
 #include "buffer.h"
 

 struct openvpn_sockaddr;
 struct link_socket_actual;
 

 struct socks_proxy_info {
   bool defined;
   bool retry;
 
   char server[128];
   int port;
 };
 
 void socks_adjust_frame_parameters (struct frame *frame, int proto);
 

 struct socks_proxy_info *socks_proxy_new (const char *server,

 					  int port,
 					  bool retry,

 					  struct auto_proxy_info *auto_proxy_info);
 
 void socks_proxy_close (struct socks_proxy_info *sp);

 
 void establish_socks_proxy_passthru (struct socks_proxy_info *p,
 				     socket_descriptor_t sd, /* already open to proxy */
 				     const char *host,       /* openvpn server remote */
 				     const int port,         /* openvpn server port */
 				     volatile int *signal_received);
 
 void establish_socks_proxy_udpassoc (struct socks_proxy_info *p,
 				     socket_descriptor_t ctrl_sd, /* already open to proxy */
 				     socket_descriptor_t udp_sd,

 				     struct openvpn_sockaddr *relay_addr,

 				     volatile int *signal_received);
 
 void socks_process_incoming_udp (struct buffer *buf,

 				struct link_socket_actual *from);

 
 int socks_process_outgoing_udp (struct buffer *buf,

 				const struct link_socket_actual *to);

 
 #endif
 #endif