Chris@16: //
Chris@16: // ip/impl/address_v4.ipp
Chris@16: // ~~~~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_IP_IMPL_ADDRESS_V4_IPP
Chris@16: #define BOOST_ASIO_IP_IMPL_ADDRESS_V4_IPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/config.hpp>
Chris@16: #include <climits>
Chris@16: #include <stdexcept>
Chris@16: #include <boost/asio/error.hpp>
Chris@16: #include <boost/asio/detail/socket_ops.hpp>
Chris@16: #include <boost/asio/detail/throw_error.hpp>
Chris@16: #include <boost/asio/detail/throw_exception.hpp>
Chris@16: #include <boost/asio/ip/address_v4.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: namespace ip {
Chris@16: 
Chris@16: address_v4::address_v4(const address_v4::bytes_type& bytes)
Chris@16: {
Chris@16: #if UCHAR_MAX > 0xFF
Chris@16:   if (bytes[0] > 0xFF || bytes[1] > 0xFF
Chris@16:       || bytes[2] > 0xFF || bytes[3] > 0xFF)
Chris@16:   {
Chris@16:     std::out_of_range ex("address_v4 from bytes_type");
Chris@16:     boost::asio::detail::throw_exception(ex);
Chris@16:   }
Chris@16: #endif // UCHAR_MAX > 0xFF
Chris@16: 
Chris@16:   using namespace std; // For memcpy.
Chris@16:   memcpy(&addr_.s_addr, bytes.data(), 4);
Chris@16: }
Chris@16: 
Chris@16: address_v4::address_v4(unsigned long addr)
Chris@16: {
Chris@16: #if ULONG_MAX > 0xFFFFFFFF
Chris@16:   if (addr > 0xFFFFFFFF)
Chris@16:   {
Chris@16:     std::out_of_range ex("address_v4 from unsigned long");
Chris@16:     boost::asio::detail::throw_exception(ex);
Chris@16:   }
Chris@16: #endif // ULONG_MAX > 0xFFFFFFFF
Chris@16: 
Chris@16:   addr_.s_addr = boost::asio::detail::socket_ops::host_to_network_long(
Chris@16:       static_cast<boost::asio::detail::u_long_type>(addr));
Chris@16: }
Chris@16: 
Chris@16: address_v4::bytes_type address_v4::to_bytes() const
Chris@16: {
Chris@16:   using namespace std; // For memcpy.
Chris@16:   bytes_type bytes;
Chris@16: #if defined(BOOST_ASIO_HAS_STD_ARRAY)
Chris@16:   memcpy(bytes.data(), &addr_.s_addr, 4);
Chris@16: #else // defined(BOOST_ASIO_HAS_STD_ARRAY)
Chris@16:   memcpy(bytes.elems, &addr_.s_addr, 4);
Chris@16: #endif // defined(BOOST_ASIO_HAS_STD_ARRAY)
Chris@16:   return bytes;
Chris@16: }
Chris@16: 
Chris@16: unsigned long address_v4::to_ulong() const
Chris@16: {
Chris@16:   return boost::asio::detail::socket_ops::network_to_host_long(addr_.s_addr);
Chris@16: }
Chris@16: 
Chris@16: std::string address_v4::to_string() const
Chris@16: {
Chris@16:   boost::system::error_code ec;
Chris@16:   std::string addr = to_string(ec);
Chris@16:   boost::asio::detail::throw_error(ec);
Chris@16:   return addr;
Chris@16: }
Chris@16: 
Chris@16: std::string address_v4::to_string(boost::system::error_code& ec) const
Chris@16: {
Chris@16:   char addr_str[boost::asio::detail::max_addr_v4_str_len];
Chris@16:   const char* addr =
Chris@16:     boost::asio::detail::socket_ops::inet_ntop(
Chris@16:         BOOST_ASIO_OS_DEF(AF_INET), &addr_, addr_str,
Chris@16:         boost::asio::detail::max_addr_v4_str_len, 0, ec);
Chris@16:   if (addr == 0)
Chris@16:     return std::string();
Chris@16:   return addr;
Chris@16: }
Chris@16: 
Chris@16: address_v4 address_v4::from_string(const char* str)
Chris@16: {
Chris@16:   boost::system::error_code ec;
Chris@16:   address_v4 addr = from_string(str, ec);
Chris@16:   boost::asio::detail::throw_error(ec);
Chris@16:   return addr;
Chris@16: }
Chris@16: 
Chris@16: address_v4 address_v4::from_string(
Chris@16:     const char* str, boost::system::error_code& ec)
Chris@16: {
Chris@16:   address_v4 tmp;
Chris@16:   if (boost::asio::detail::socket_ops::inet_pton(
Chris@16:         BOOST_ASIO_OS_DEF(AF_INET), str, &tmp.addr_, 0, ec) <= 0)
Chris@16:     return address_v4();
Chris@16:   return tmp;
Chris@16: }
Chris@16: 
Chris@16: address_v4 address_v4::from_string(const std::string& str)
Chris@16: {
Chris@16:   return from_string(str.c_str());
Chris@16: }
Chris@16: 
Chris@16: address_v4 address_v4::from_string(
Chris@16:     const std::string& str, boost::system::error_code& ec)
Chris@16: {
Chris@16:   return from_string(str.c_str(), ec);
Chris@16: }
Chris@16: 
Chris@16: bool address_v4::is_loopback() const
Chris@16: {
Chris@16:   return (to_ulong() & 0xFF000000) == 0x7F000000;
Chris@16: }
Chris@16: 
Chris@16: bool address_v4::is_unspecified() const
Chris@16: {
Chris@16:   return to_ulong() == 0;
Chris@16: }
Chris@16: 
Chris@16: bool address_v4::is_class_a() const
Chris@16: {
Chris@16:   return (to_ulong() & 0x80000000) == 0;
Chris@16: }
Chris@16: 
Chris@16: bool address_v4::is_class_b() const
Chris@16: {
Chris@16:   return (to_ulong() & 0xC0000000) == 0x80000000;
Chris@16: }
Chris@16: 
Chris@16: bool address_v4::is_class_c() const
Chris@16: {
Chris@16:   return (to_ulong() & 0xE0000000) == 0xC0000000;
Chris@16: }
Chris@16: 
Chris@16: bool address_v4::is_multicast() const
Chris@16: {
Chris@16:   return (to_ulong() & 0xF0000000) == 0xE0000000;
Chris@16: }
Chris@16: 
Chris@16: address_v4 address_v4::broadcast(const address_v4& addr, const address_v4& mask)
Chris@16: {
Chris@16:   return address_v4(addr.to_ulong() | (mask.to_ulong() ^ 0xFFFFFFFF));
Chris@16: }
Chris@16: 
Chris@16: address_v4 address_v4::netmask(const address_v4& addr)
Chris@16: {
Chris@16:   if (addr.is_class_a())
Chris@16:     return address_v4(0xFF000000);
Chris@16:   if (addr.is_class_b())
Chris@16:     return address_v4(0xFFFF0000);
Chris@16:   if (addr.is_class_c())
Chris@16:     return address_v4(0xFFFFFF00);
Chris@16:   return address_v4(0xFFFFFFFF);
Chris@16: }
Chris@16: 
Chris@16: } // namespace ip
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // BOOST_ASIO_IP_IMPL_ADDRESS_V4_IPP