release/src/router/openvpn/pool.h

   1 /*
   2  *  OpenVPN -- An application to securely tunnel IP networks
   3  *             over a single TCP/UDP port, with support for SSL/TLS-based
   4  *             session authentication and key exchange,
   5  *             packet encryption, packet authentication, and
   6  *             packet compression.
   7  *
   8  *  Copyright (C) 2002-2009 OpenVPN Technologies, Inc. <sales@openvpn.net>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License version 2
  12  *  as published by the Free Software Foundation.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program (see the file COPYING included with this
  21  *  distribution); if not, write to the Free Software Foundation, Inc.,
  22  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #ifndef POOL_H
  26 #define POOL_H
  27
  28 #if P2MP
  29
  30 /*#define IFCONFIG_POOL_TEST*/
  31
  32 #include "basic.h"
  33 #include "status.h"
  34 #include "thread.h"
  35
  36 #define IFCONFIG_POOL_MAX         65536
  37 #define IFCONFIG_POOL_MIN_NETBITS    16
  38
  39 #define IFCONFIG_POOL_30NET   0
  40 #define IFCONFIG_POOL_INDIV   1
  41
  42 struct ifconfig_pool_entry
  43 {
  44   bool in_use;
  45   char *common_name;
  46   time_t last_release;
  47   bool fixed;
  48 };
  49
  50 struct ifconfig_pool
  51 {
  52   in_addr_t base;
  53   int size;
  54   int type;
  55   bool duplicate_cn;
  56   struct ifconfig_pool_entry *list;
  57 };
  58
  59 struct ifconfig_pool_persist
  60 {
  61   struct status_output *file;
  62   bool fixed;
  63 };
  64
  65 typedef int ifconfig_pool_handle;
  66
  67 struct ifconfig_pool *ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, const bool duplicate_cn);
  68
  69 void ifconfig_pool_free (struct ifconfig_pool *pool);
  70
  71 bool ifconfig_pool_verify_range (const int msglevel, const in_addr_t start, const in_addr_t end);
  72
  73 ifconfig_pool_handle ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t *remote, const char *common_name);
  74
  75 bool ifconfig_pool_release (struct ifconfig_pool* pool, ifconfig_pool_handle hand, const bool hard);
  76
  77 struct ifconfig_pool_persist *ifconfig_pool_persist_init (const char *filename, int refresh_freq);
  78 void ifconfig_pool_persist_close (struct ifconfig_pool_persist *persist);
  79 bool ifconfig_pool_write_trigger (struct ifconfig_pool_persist *persist);
  80
  81 void ifconfig_pool_read (struct ifconfig_pool_persist *persist, struct ifconfig_pool *pool);
  82 void ifconfig_pool_write (struct ifconfig_pool_persist *persist, const struct ifconfig_pool *pool);
  83
  84 #ifdef IFCONFIG_POOL_TEST
  85 void ifconfig_pool_test (in_addr_t start, in_addr_t end);
  86 #endif
  87
  88 #endif
  89 #endif