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) 2002-2018 OpenVPN 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 along 20 * with this program; if not, write to the Free Software Foundation, Inc., 21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 22 */ 23 24 #ifndef POOL_H 25 #define POOL_H 26 27 /*#define IFCONFIG_POOL_TEST*/ 28 29 #include "basic.h" 30 #include "status.h" 31 32 #define IFCONFIG_POOL_MAX 65536 33 #define IFCONFIG_POOL_MIN_NETBITS 16 34 35 enum pool_type 36 { 37 IFCONFIG_POOL_30NET, 38 IFCONFIG_POOL_INDIV 39 }; 40 41 struct ifconfig_pool_entry 42 { 43 bool in_use; 44 char *common_name; 45 time_t last_release; 46 bool fixed; 47 }; 48 49 struct ifconfig_pool 50 { 51 bool duplicate_cn; 52 struct { 53 bool enabled; 54 enum pool_type type; 55 in_addr_t base; 56 } ipv4; 57 struct { 58 bool enabled; 59 struct in6_addr base; 60 } ipv6; 61 int size; 62 struct ifconfig_pool_entry *list; 63 }; 64 65 struct ifconfig_pool_persist 66 { 67 struct status_output *file; 68 bool fixed; 69 }; 70 71 typedef int ifconfig_pool_handle; 72 73 struct ifconfig_pool *ifconfig_pool_init(const bool ipv4_pool, 74 enum pool_type type, in_addr_t start, 75 in_addr_t end, const bool duplicate_cn, 76 const bool ipv6_pool, 77 const struct in6_addr ipv6_base, 78 const int ipv6_netbits); 79 80 void ifconfig_pool_free(struct ifconfig_pool *pool); 81 82 bool ifconfig_pool_verify_range(const int msglevel, const in_addr_t start, const in_addr_t end); 83 84 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); 85 86 bool ifconfig_pool_release(struct ifconfig_pool *pool, ifconfig_pool_handle hand, const bool hard); 87 88 struct ifconfig_pool_persist *ifconfig_pool_persist_init(const char *filename, int refresh_freq); 89 90 void ifconfig_pool_persist_close(struct ifconfig_pool_persist *persist); 91 92 bool ifconfig_pool_write_trigger(struct ifconfig_pool_persist *persist); 93 94 void ifconfig_pool_read(struct ifconfig_pool_persist *persist, struct ifconfig_pool *pool); 95 96 void ifconfig_pool_write(struct ifconfig_pool_persist *persist, const struct ifconfig_pool *pool); 97 98 #ifdef IFCONFIG_POOL_TEST 99 void ifconfig_pool_test(in_addr_t start, in_addr_t end); 100 101 #endif 102 103 #endif /* ifndef POOL_H */ 104