text: /*
   *  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) 2002-2017 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
   */
  
  #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) */
  