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) 2002-2010 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
35#define IFCONFIG_POOL_MAX         65536
36#define IFCONFIG_POOL_MIN_NETBITS    16
37
38#define IFCONFIG_POOL_30NET   0
39#define IFCONFIG_POOL_INDIV   1
40
41struct ifconfig_pool_entry
42{
43  bool in_use;
44  char *common_name;
45  time_t last_release;
46  bool fixed;
47};
48
49struct ifconfig_pool
50{
51  in_addr_t base;
52  int size;
53  int type;
54  bool duplicate_cn;
55  bool ipv6;
56  struct in6_addr base_ipv6;
57  unsigned int size_ipv6;
58  struct ifconfig_pool_entry *list;
59};
60
61struct ifconfig_pool_persist
62{
63  struct status_output *file;
64  bool fixed;
65};
66
67typedef int ifconfig_pool_handle;
68
69struct ifconfig_pool *ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, const bool duplicate_cn, const bool ipv6_pool, const struct in6_addr ipv6_base, const int ipv6_netbits );
70
71void ifconfig_pool_free (struct ifconfig_pool *pool);
72
73bool ifconfig_pool_verify_range (const int msglevel, const in_addr_t start, const in_addr_t end);
74
75ifconfig_pool_handle ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t *remote, struct in6_addr *remote_ipv6, const char *common_name);
76
77bool ifconfig_pool_release (struct ifconfig_pool* pool, ifconfig_pool_handle hand, const bool hard);
78
79struct ifconfig_pool_persist *ifconfig_pool_persist_init (const char *filename, int refresh_freq);
80void ifconfig_pool_persist_close (struct ifconfig_pool_persist *persist);
81bool ifconfig_pool_write_trigger (struct ifconfig_pool_persist *persist);
82
83void ifconfig_pool_read (struct ifconfig_pool_persist *persist, struct ifconfig_pool *pool);
84void ifconfig_pool_write (struct ifconfig_pool_persist *persist, const struct ifconfig_pool *pool);
85
86#ifdef IFCONFIG_POOL_TEST
87void ifconfig_pool_test (in_addr_t start, in_addr_t end);
88#endif
89
90#endif
91#endif
92