/*
  *  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) 2002-2009 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
  */
 
 /* packet filter functions */
 
 #if defined(ENABLE_PF) && !defined(OPENVPN_PF_H)
 #define OPENVPN_PF_H
 
 #include "list.h"
 #include "mroute.h"
 

 #define PF_MAX_LINE_LEN 256

 
 struct context;
 
 struct ipv4_subnet {
   bool exclude;
   in_addr_t network;
   in_addr_t netmask;
 };
 
 struct pf_subnet {
   struct pf_subnet *next;
   struct ipv4_subnet rule;
 };
 
 struct pf_subnet_set {
   bool default_allow;
   struct pf_subnet *list;
 };
 
 struct pf_cn {
   bool exclude;
   char *cn;
 };
 
 struct pf_cn_elem {
   struct pf_cn_elem *next;
   struct pf_cn rule;
 };
 
 struct pf_cn_set {
   bool default_allow;
   struct pf_cn_elem *list;
   struct hash *hash_table;
 };
 
 struct pf_set {
   bool kill;
   struct pf_subnet_set sns;
   struct pf_cn_set cns;
 };
 
 struct pf_context {

   bool enabled;
   struct pf_set *pfs;
 #ifdef PLUGIN_PF

   char *filename;
   time_t file_last_mod;
   unsigned int n_check_reload;
   struct event_timeout reload;

 #endif

 };
 
 void pf_init_context (struct context *c);
 
 void pf_destroy_context (struct pf_context *pfc);
 

 #ifdef PLUGIN_PF

 void pf_check_reload (struct context *c);

 #endif

 #ifdef MANAGEMENT_PF
 bool pf_load_from_buffer_list (struct context *c, const struct buffer_list *config);
 #endif

 #ifdef ENABLE_DEBUG

 void pf_context_print (const struct pf_context *pfc, const char *prefix, const int lev);
 #endif
 
 #endif