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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.
*/
#if !defined(CLINAT_H)
#define CLINAT_H
#include "buffer.h"
#define MAX_CLIENT_NAT 64
#define CN_OUTGOING 0
#define CN_INCOMING 1
struct client_nat_entry {
#define CN_SNAT 0
#define CN_DNAT 1
int type;
in_addr_t network;
in_addr_t netmask;
in_addr_t foreign_network;
};
struct client_nat_option_list {
int n;
struct client_nat_entry entries[MAX_CLIENT_NAT];
};
struct client_nat_option_list *new_client_nat_list(struct gc_arena *gc);
struct client_nat_option_list *clone_client_nat_option_list(const struct client_nat_option_list *src, struct gc_arena *gc);
void copy_client_nat_option_list(struct client_nat_option_list *dest, const struct client_nat_option_list *src);
void print_client_nat_list(const struct client_nat_option_list *list, int msglevel);
void add_client_nat_to_option_list(struct client_nat_option_list *dest,
const char *type,
const char *network,
const char *netmask,
const char *foreign_network,
int msglevel);
void client_nat_transform(const struct client_nat_option_list *list,
struct buffer *ipbuf,
const int direction);
#endif /* if !defined(CLINAT_H) */
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