/* * $Id$ * * Functions that process IPOPS message * * Copyright (C) 2012 Hugh Waite (crocodile-rcs.com) * * This file is part of Kamailio, a free SIP server. * * Kamailio is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version * * Kamailio 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 * */ #include #include "api.h" #include "ip_parser.h" extern int _compare_ips(char*, size_t, enum enum_ip_type, char*, size_t, enum enum_ip_type); extern int _ip_is_in_subnet(char *ip1, size_t len1, enum enum_ip_type ip1_type, char *ip2, size_t len2, enum enum_ip_type ip2_type, int netmask); /** * */ int ipopsapi_compare_ips(const str *const ip1, const str *const ip2) { str string1 = *ip1; str string2 = *ip2; enum enum_ip_type ip1_type, ip2_type; switch(ip1_type = ip_parser_execute(string1.s, string1.len)) { case(ip_type_error): return -1; break; case(ip_type_ipv6_reference): string1.s += 1; string1.len -= 2; ip1_type = ip_type_ipv6; break; default: break; } switch(ip2_type = ip_parser_execute(string2.s, string2.len)) { case(ip_type_error): return -1; break; case(ip_type_ipv6_reference): string2.s += 1; string2.len -= 2; ip2_type = ip_type_ipv6; break; default: break; } if (_compare_ips(string1.s, string1.len, ip1_type, string2.s, string2.len, ip2_type)) return 1; else return -1; } /** * */ int ipopsapi_ip_is_in_subnet(const str *const ip1, const str *const ip2) { str string1 = *ip1; str string2 = *ip2; enum enum_ip_type ip1_type, ip2_type; char *cidr_pos = NULL; int netmask = 0; switch(ip1_type = ip_parser_execute(string1.s, string1.len)) { case(ip_type_error): return -1; break; case(ip_type_ipv6_reference): return -1; break; default: break; } cidr_pos = string2.s + string2.len - 1; while (cidr_pos > string2.s) { if (*cidr_pos == '/') break; cidr_pos--; } if (cidr_pos == string2.s) return -1; string2.len = (cidr_pos - string2.s); netmask = atoi(cidr_pos+1); switch(ip2_type = ip_parser_execute(string2.s, string2.len)) { case(ip_type_error): return -1; break; case(ip_type_ipv6_reference): return -1; break; default: break; } if (_ip_is_in_subnet(string1.s, string1.len, ip1_type, string2.s, string2.len, ip2_type, netmask)) return 1; else return -1; } /** * */ int ipopsapi_is_ip(const str * const ip) { if (ip_parser_execute(ip->s, ip->len) != ip_type_error) return 1; else return -1; } /** * */ int bind_ipops(ipops_api_t* api) { if (!api) { ERR("Invalid parameter value\n"); return -1; } api->compare_ips = ipopsapi_compare_ips; api->ip_is_in_subnet = ipopsapi_ip_is_in_subnet; api->is_ip = ipopsapi_is_ip; return 0; }