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/*
* Copyright (C) 2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS CONTRIBUTORS
* 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 <sys/socket.h>
#include <wtf/Compiler.h>
#include <wtf/Function.h>
#include <wtf/TypeCasts.h>
namespace WTF {
inline bool isIPV4SocketAddress(const struct sockaddr& socket)
{
return socket.sa_family == AF_INET;
}
inline const struct sockaddr_in* dynamicCastToIPV4SocketAddress(const struct sockaddr& socket)
{
if (isIPV4SocketAddress(socket))
SUPPRESS_MEMORY_UNSAFE_CAST return reinterpret_cast<const struct sockaddr_in*>(&socket);
return nullptr;
}
inline const struct sockaddr_in& asIPV4SocketAddress(const struct sockaddr& socket)
{
RELEASE_ASSERT(isIPV4SocketAddress(socket));
SUPPRESS_MEMORY_UNSAFE_CAST return *reinterpret_cast<const struct sockaddr_in*>(&socket);
}
inline bool initializeIPV4SocketAddress(sockaddr_storage& storage, NOESCAPE const Function<bool(sockaddr_in&)>& initialize)
{
zeroBytes(storage);
SUPPRESS_MEMORY_UNSAFE_CAST auto& address = *reinterpret_cast<struct sockaddr_in*>(&storage);
if (!initialize(address))
return false;
storage.ss_family = AF_INET;
return true;
}
inline bool isIPV6SocketAddress(const struct sockaddr& socket)
{
return socket.sa_family == AF_INET6;
}
inline const struct sockaddr_in6* dynamicCastToIPV6SocketAddress(const struct sockaddr& socket)
{
if (isIPV6SocketAddress(socket))
SUPPRESS_MEMORY_UNSAFE_CAST return reinterpret_cast<const struct sockaddr_in6*>(&socket);
return nullptr;
}
inline const struct sockaddr_in6& asIPV6SocketAddress(const struct sockaddr& socket)
{
RELEASE_ASSERT(isIPV6SocketAddress(socket));
SUPPRESS_MEMORY_UNSAFE_CAST return *reinterpret_cast<const struct sockaddr_in6*>(&socket);
}
inline bool initializeIPV6SocketAddress(sockaddr_storage& storage, NOESCAPE const Function<bool(sockaddr_in6&)>& initialize)
{
zeroBytes(storage);
SUPPRESS_MEMORY_UNSAFE_CAST auto& address = *reinterpret_cast<struct sockaddr_in6*>(&storage);
if (!initialize(address))
return false;
storage.ss_family = AF_INET6;
return true;
}
inline struct sockaddr& asSocketAddress(sockaddr_storage& storage)
{
SUPPRESS_MEMORY_UNSAFE_CAST return *reinterpret_cast<struct sockaddr*>(&storage);
}
} // namespace WTF
using WTF::asIPV4SocketAddress;
using WTF::asIPV6SocketAddress;
using WTF::asSocketAddress;
using WTF::dynamicCastToIPV4SocketAddress;
using WTF::dynamicCastToIPV6SocketAddress;
using WTF::initializeIPV4SocketAddress;
using WTF::initializeIPV6SocketAddress;
using WTF::isIPV4SocketAddress;
using WTF::isIPV6SocketAddress;
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