148 lines
4.1 KiB
C++
148 lines
4.1 KiB
C++
/*
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* Copyright (C) 2012-2017 Max Kellermann <max.kellermann@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef IPV4_ADDRESS_HXX
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#define IPV4_ADDRESS_HXX
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#include "SocketAddress.hxx"
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#include "system/ByteOrder.hxx"
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#include <stdint.h>
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#ifdef _WIN32
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#else
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#include <netinet/in.h>
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#endif
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/**
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* An OO wrapper for struct sockaddr_in.
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*/
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class IPv4Address {
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struct sockaddr_in address;
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#ifdef _WIN32
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static constexpr struct in_addr ConstructInAddr(uint8_t a, uint8_t b,
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uint8_t c, uint8_t d) noexcept {
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return {{{ a, b, c, d }}};
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}
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static constexpr struct in_addr ConstructInAddr(uint32_t x) noexcept {
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return ConstructInAddr(x >> 24, x >> 16, x >> 8, x);
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}
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#else
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#ifdef __BIONIC__
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typedef uint32_t in_addr_t;
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#endif
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static constexpr in_addr_t ConstructInAddrT(uint8_t a, uint8_t b,
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uint8_t c, uint8_t d) noexcept {
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return ToBE32((a << 24) | (b << 16) | (c << 8) | d);
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}
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static constexpr struct in_addr ConstructInAddr(uint32_t x) noexcept {
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return { ToBE32(x) };
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}
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static constexpr struct in_addr ConstructInAddr(uint8_t a, uint8_t b,
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uint8_t c, uint8_t d) noexcept {
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return { ConstructInAddrT(a, b, c, d) };
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}
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#endif
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static constexpr struct sockaddr_in Construct(struct in_addr address,
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uint16_t port) noexcept {
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return {
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#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
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sizeof(struct sockaddr_in),
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#endif
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AF_INET,
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ToBE16(port),
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address,
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{},
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};
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}
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static constexpr struct sockaddr_in Construct(uint32_t address,
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uint16_t port) noexcept {
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return Construct(ConstructInAddr(address), port);
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}
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public:
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IPv4Address() = default;
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constexpr IPv4Address(struct in_addr _address, uint16_t port) noexcept
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:address(Construct(_address, port)) {}
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constexpr IPv4Address(uint8_t a, uint8_t b, uint8_t c,
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uint8_t d, uint16_t port) noexcept
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:IPv4Address(ConstructInAddr(a, b, c, d), port) {}
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constexpr explicit IPv4Address(uint16_t port) noexcept
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:IPv4Address(ConstructInAddr(INADDR_ANY), port) {}
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/**
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* Convert a #SocketAddress to a #IPv4Address. Its address family must be AF_INET.
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*/
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explicit IPv4Address(SocketAddress src) noexcept;
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static constexpr struct in_addr Loopback() noexcept {
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return ConstructInAddr(INADDR_LOOPBACK);
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}
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constexpr operator SocketAddress() const noexcept {
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return SocketAddress((const struct sockaddr *)&address,
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sizeof(address));
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}
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constexpr SocketAddress::size_type GetSize() const noexcept {
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return sizeof(address);
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}
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constexpr bool IsDefined() const noexcept {
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return address.sin_family != AF_UNSPEC;
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}
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constexpr uint16_t GetPort() const noexcept {
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return FromBE16(address.sin_port);
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}
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void SetPort(uint16_t port) noexcept {
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address.sin_port = ToBE16(port);
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}
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constexpr const struct in_addr &GetAddress() const noexcept {
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return address.sin_addr;
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}
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};
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#endif
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