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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) 2002-2021 OpenVPN 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* 2004-01-30: Added Socks5 proxy support
* (Christof Meerwald, http://cmeerw.org)
*/
#ifndef SOCKS_H
#define SOCKS_H
#include "buffer.h"
struct openvpn_sockaddr;
struct link_socket_actual;
struct socks_proxy_info {
bool defined;
char server[128];
const char *port;
char authfile[256];
};
void socks_adjust_frame_parameters(struct frame *frame, int proto);
struct socks_proxy_info *socks_proxy_new(const char *server,
const char *port,
const char *authfile);
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 char *servname, /* 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 /* ifndef SOCKS_H */
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