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//
// ip/impl/address_v4.ipp
// ~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_IP_IMPL_ADDRESS_V4_IPP
#define ASIO_IP_IMPL_ADDRESS_V4_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <climits>
#include <limits>
#include <stdexcept>
#include "asio/error.hpp"
#include "asio/detail/socket_ops.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/detail/throw_exception.hpp"
#include "asio/ip/address_v4.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace ip {
address_v4::address_v4(const address_v4::bytes_type& bytes)
{
#if UCHAR_MAX > 0xFF
if (bytes[0] > 0xFF || bytes[1] > 0xFF
|| bytes[2] > 0xFF || bytes[3] > 0xFF)
{
std::out_of_range ex("address_v4 from bytes_type");
asio::detail::throw_exception(ex);
}
#endif // UCHAR_MAX > 0xFF
using namespace std; // For memcpy.
memcpy(&addr_.s_addr, bytes.data(), 4);
}
address_v4::address_v4(address_v4::uint_type addr)
{
if ((std::numeric_limits<uint_type>::max)() > 0xFFFFFFFF)
{
std::out_of_range ex("address_v4 from unsigned integer");
asio::detail::throw_exception(ex);
}
addr_.s_addr = asio::detail::socket_ops::host_to_network_long(
static_cast<asio::detail::u_long_type>(addr));
}
address_v4::bytes_type address_v4::to_bytes() const
{
using namespace std; // For memcpy.
bytes_type bytes;
#if defined(ASIO_HAS_STD_ARRAY)
memcpy(bytes.data(), &addr_.s_addr, 4);
#else // defined(ASIO_HAS_STD_ARRAY)
memcpy(bytes.elems, &addr_.s_addr, 4);
#endif // defined(ASIO_HAS_STD_ARRAY)
return bytes;
}
address_v4::uint_type address_v4::to_uint() const
{
return asio::detail::socket_ops::network_to_host_long(addr_.s_addr);
}
#if !defined(ASIO_NO_DEPRECATED)
unsigned long address_v4::to_ulong() const
{
return asio::detail::socket_ops::network_to_host_long(addr_.s_addr);
}
#endif // !defined(ASIO_NO_DEPRECATED)
std::string address_v4::to_string() const
{
asio::error_code ec;
char addr_str[asio::detail::max_addr_v4_str_len];
const char* addr =
asio::detail::socket_ops::inet_ntop(
ASIO_OS_DEF(AF_INET), &addr_, addr_str,
asio::detail::max_addr_v4_str_len, 0, ec);
if (addr == 0)
asio::detail::throw_error(ec);
return addr;
}
#if !defined(ASIO_NO_DEPRECATED)
std::string address_v4::to_string(asio::error_code& ec) const
{
char addr_str[asio::detail::max_addr_v4_str_len];
const char* addr =
asio::detail::socket_ops::inet_ntop(
ASIO_OS_DEF(AF_INET), &addr_, addr_str,
asio::detail::max_addr_v4_str_len, 0, ec);
if (addr == 0)
return std::string();
return addr;
}
#endif // !defined(ASIO_NO_DEPRECATED)
bool address_v4::is_loopback() const
{
return (to_uint() & 0xFF000000) == 0x7F000000;
}
bool address_v4::is_unspecified() const
{
return to_uint() == 0;
}
#if !defined(ASIO_NO_DEPRECATED)
bool address_v4::is_class_a() const
{
return (to_uint() & 0x80000000) == 0;
}
bool address_v4::is_class_b() const
{
return (to_uint() & 0xC0000000) == 0x80000000;
}
bool address_v4::is_class_c() const
{
return (to_uint() & 0xE0000000) == 0xC0000000;
}
#endif // !defined(ASIO_NO_DEPRECATED)
bool address_v4::is_multicast() const
{
return (to_uint() & 0xF0000000) == 0xE0000000;
}
#if !defined(ASIO_NO_DEPRECATED)
address_v4 address_v4::broadcast(const address_v4& addr, const address_v4& mask)
{
return address_v4(addr.to_uint() | (mask.to_uint() ^ 0xFFFFFFFF));
}
address_v4 address_v4::netmask(const address_v4& addr)
{
if (addr.is_class_a())
return address_v4(0xFF000000);
if (addr.is_class_b())
return address_v4(0xFFFF0000);
if (addr.is_class_c())
return address_v4(0xFFFFFF00);
return address_v4(0xFFFFFFFF);
}
#endif // !defined(ASIO_NO_DEPRECATED)
address_v4 make_address_v4(const char* str)
{
asio::error_code ec;
address_v4 addr = make_address_v4(str, ec);
asio::detail::throw_error(ec);
return addr;
}
address_v4 make_address_v4(
const char* str, asio::error_code& ec)
{
address_v4::bytes_type bytes;
if (asio::detail::socket_ops::inet_pton(
ASIO_OS_DEF(AF_INET), str, &bytes, 0, ec) <= 0)
return address_v4();
return address_v4(bytes);
}
address_v4 make_address_v4(const std::string& str)
{
return make_address_v4(str.c_str());
}
address_v4 make_address_v4(
const std::string& str, asio::error_code& ec)
{
return make_address_v4(str.c_str(), ec);
}
#if defined(ASIO_HAS_STD_STRING_VIEW)
address_v4 make_address_v4(string_view str)
{
return make_address_v4(static_cast<std::string>(str));
}
address_v4 make_address_v4(string_view str,
asio::error_code& ec)
{
return make_address_v4(static_cast<std::string>(str), ec);
}
#endif // defined(ASIO_HAS_STD_STRING_VIEW)
} // namespace ip
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_IP_IMPL_ADDRESS_V4_IPP
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