Alexander Afanasyev
134 lines
4.3 KiB
C++
134 lines
4.3 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/**
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* Copyright (c) 2014, Regents of the University of California,
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* Arizona Board of Regents,
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* Colorado State University,
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* University Pierre & Marie Curie, Sorbonne University,
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* Washington University in St. Louis,
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* Beijing Institute of Technology,
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* The University of Memphis
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*
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* This file is part of NFD (Named Data Networking Forwarding Daemon).
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* See AUTHORS.md for complete list of NFD authors and contributors.
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*
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* NFD is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*
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* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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**/
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#include "network.hpp"
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namespace nfd {
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void
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Network::print(std::ostream& os) const
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{
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os << m_minAddress << " <-> " << m_maxAddress;
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}
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const Network&
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Network::getMaxRangeV4()
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{
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using boost::asio::ip::address_v4;
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static Network range = Network(address_v4(0), address_v4(0xFFFFFFFF));
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return range;
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}
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const Network&
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Network::getMaxRangeV6()
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{
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using boost::asio::ip::address_v6;
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static address_v6::bytes_type maxV6 = {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}};
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static Network range = Network(address_v6(), address_v6(maxV6));
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return range;
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}
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//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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std::ostream&
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operator<<(std::ostream& os, const Network& network)
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{
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network.print(os);
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return os;
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}
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std::istream&
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operator>>(std::istream& is, Network& network)
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{
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using namespace boost::asio;
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std::string networkStr;
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is >> networkStr;
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size_t position = networkStr.find('/');
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if (position == std::string::npos)
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{
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network.m_minAddress = ip::address::from_string(networkStr);
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network.m_maxAddress = ip::address::from_string(networkStr);
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}
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else
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{
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ip::address address = ip::address::from_string(networkStr.substr(0, position));
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size_t mask = boost::lexical_cast<size_t>(networkStr.substr(position+1));
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if (address.is_v4())
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{
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ip::address_v4::bytes_type maskBytes = boost::initialized_value;
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for (size_t i = 0; i < mask; i++)
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{
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size_t byteId = i / 8;
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size_t bitIndex = 7 - i % 8;
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maskBytes[byteId] |= (1 << bitIndex);
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}
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ip::address_v4::bytes_type addressBytes = address.to_v4().to_bytes();
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ip::address_v4::bytes_type min;
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ip::address_v4::bytes_type max;
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for (size_t i = 0; i < addressBytes.size(); i++)
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{
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min[i] = addressBytes[i] & maskBytes[i];
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max[i] = addressBytes[i] | ~(maskBytes[i]);
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}
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network.m_minAddress = ip::address_v4(min);
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network.m_maxAddress = ip::address_v4(max);
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}
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else
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{
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ip::address_v6::bytes_type maskBytes = boost::initialized_value;
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for (size_t i = 0; i < mask; i++)
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{
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size_t byteId = i / 8;
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size_t bitIndex = 7 - i % 8;
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maskBytes[byteId] |= (1 << bitIndex);
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}
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ip::address_v6::bytes_type addressBytes = address.to_v6().to_bytes();
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ip::address_v6::bytes_type min;
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ip::address_v6::bytes_type max;
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for (size_t i = 0; i < addressBytes.size(); i++)
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{
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min[i] = addressBytes[i] & maskBytes[i];
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max[i] = addressBytes[i] | ~(maskBytes[i]);
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}
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network.m_minAddress = ip::address_v6(min);
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network.m_maxAddress = ip::address_v6(max);
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}
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}
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return is;
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}
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} // namespace nfd
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