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/*
* 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) 2002-2021 OpenVPN 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.
*/
#ifndef POOL_H
#define POOL_H
#if P2MP
/*#define IFCONFIG_POOL_TEST*/
#include "basic.h"
#include "status.h"
#define IFCONFIG_POOL_MAX 65536
#define IFCONFIG_POOL_MIN_NETBITS 16
enum pool_type
{
IFCONFIG_POOL_30NET,
IFCONFIG_POOL_INDIV
};
struct ifconfig_pool_entry
{
bool in_use;
char *common_name;
time_t last_release;
bool fixed;
};
struct ifconfig_pool
{
bool duplicate_cn;
struct {
bool enabled;
enum pool_type type;
in_addr_t base;
} ipv4;
struct {
bool enabled;
struct in6_addr base;
} ipv6;
int size;
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(const bool ipv4_pool,
enum pool_type 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);
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, struct in6_addr *remote_ipv6, 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 /* if P2MP */
#endif /* ifndef POOL_H */
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