/*
  *  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; if not, write to the Free Software Foundation, Inc.,
  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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

     const 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 /* if defined(ENABLE_PF) && !defined(OPENVPN_PF_H) */