// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above copyright // notice, this list of conditions and the following disclaimer in the // documentation and/or other materials provided with the distribution. // * Neither the name of the Andrey N. Sabelnikov nor the // names of its contributors may be used to endorse or promote products // derived from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND // ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // #pragma once #include #include #include #include "int-util.h" // IP addresses are kept in network byte order // Masks below are little endian // -> convert from network byte order to host byte order before comparing namespace epee { namespace net_utils { inline bool is_ipv6_local(const std::string& ip) { auto addr = boost::asio::ip::address_v6::from_string(ip); // ipv6 link-local unicast addresses are fe80::/10 bool is_link_local = addr.is_link_local(); auto addr_bytes = addr.to_bytes(); // ipv6 unique local unicast addresses start with fc00::/7 -- (fcXX or fdXX) bool is_unique_local_unicast = (addr_bytes[0] == 0xfc || addr_bytes[0] == 0xfd); return is_link_local || is_unique_local_unicast; } inline bool is_ipv6_loopback(const std::string& ip) { // ipv6 loopback is ::1 return boost::asio::ip::address_v6::from_string(ip).is_loopback(); } inline bool is_ip_local(uint32_t ip) { ip = SWAP32LE(ip); /* local ip area 10.0.0.0 — 10.255.255.255 172.16.0.0 — 172.31.255.255 192.168.0.0 — 192.168.255.255 */ if( (ip | 0xffffff00) == 0xffffff0a) return true; if( (ip | 0xffff0000) == 0xffffa8c0) return true; if( (ip | 0xffffff00) == 0xffffffac) { uint32_t second_num = (ip >> 8) & 0xff; if(second_num >= 16 && second_num <= 31 ) return true; } return false; } inline bool is_ip_loopback(uint32_t ip) { ip = SWAP32LE(ip); if( (ip | 0xffffff00) == 0xffffff7f) return true; //MAKE_IP /* loopback ip 127.0.0.0 — 127.255.255.255 */ return false; } } }