/*
  *  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) 2002-2010 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
  */
 
 #ifndef POOL_H
 #define POOL_H
 
 #if P2MP
 
 /*#define IFCONFIG_POOL_TEST*/
 
 #include "basic.h"
 #include "status.h"
 #include "thread.h"
 
 #define IFCONFIG_POOL_MAX         65536
 #define IFCONFIG_POOL_MIN_NETBITS    16
 
 #define IFCONFIG_POOL_30NET   0
 #define IFCONFIG_POOL_INDIV   1
 
 struct ifconfig_pool_entry
 {
   bool in_use;
   char *common_name;
   time_t last_release;
   bool fixed;
 };
 
 struct ifconfig_pool
 {
   in_addr_t base;
   int size;
   int type;
   bool duplicate_cn;
   struct ifconfig_pool_entry *list;
 };
 
 struct ifconfig_pool_persist
 {
   struct status_output *file;
   bool fixed;
 };
 
 typedef int ifconfig_pool_handle;
 
 struct ifconfig_pool *ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, const bool duplicate_cn);
 
 void ifconfig_pool_free (struct ifconfig_pool *pool);
 

 bool ifconfig_pool_verify_range (const int msglevel, const in_addr_t start, const in_addr_t end);
 

 ifconfig_pool_handle ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t *remote, const char *common_name);
 
 bool ifconfig_pool_release (struct ifconfig_pool* pool, ifconfig_pool_handle hand, const bool hard);
 
 struct ifconfig_pool_persist *ifconfig_pool_persist_init (const char *filename, int refresh_freq);
 void ifconfig_pool_persist_close (struct ifconfig_pool_persist *persist);
 bool ifconfig_pool_write_trigger (struct ifconfig_pool_persist *persist);
 
 void ifconfig_pool_read (struct ifconfig_pool_persist *persist, struct ifconfig_pool *pool);
 void ifconfig_pool_write (struct ifconfig_pool_persist *persist, const struct ifconfig_pool *pool);
 
 #ifdef IFCONFIG_POOL_TEST
 void ifconfig_pool_test (in_addr_t start, in_addr_t end);
 #endif
 
 #endif
 #endif