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/*
* Copyright (C) 2008 Collin Jackson <collinj@webkit.org>
*
* 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 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
* 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 <optional>
#include <variant>
#include <wtf/Forward.h>
#if OS(WINDOWS)
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <netinet/in.h>
#endif
namespace WebCore {
class IPAddress {
public:
static std::optional<IPAddress> fromSockAddrIn6(const struct sockaddr_in6&);
explicit IPAddress(const struct in_addr& address)
: m_address(address)
{
}
explicit IPAddress(const struct in6_addr& address)
: m_address(address)
{
}
bool isIPv4() const { return std::holds_alternative<struct in_addr>(m_address); }
bool isIPv6() const { return std::holds_alternative<struct in6_addr>(m_address); }
const struct in_addr& ipv4Address() const { return std::get<struct in_addr>(m_address); }
const struct in6_addr& ipv6Address() const { return std::get<struct in6_addr>(m_address); }
private:
std::variant<struct in_addr, struct in6_addr> m_address;
};
enum class DNSError { Unknown, CannotResolve, Cancelled };
using DNSAddressesOrError = Expected<Vector<IPAddress>, DNSError>;
using DNSCompletionHandler = CompletionHandler<void(DNSAddressesOrError&&)>;
WEBCORE_EXPORT void prefetchDNS(const String& hostname);
WEBCORE_EXPORT void resolveDNS(const String& hostname, uint64_t identifier, DNSCompletionHandler&&);
WEBCORE_EXPORT void stopResolveDNS(uint64_t identifier);
inline std::optional<IPAddress> IPAddress::fromSockAddrIn6(const struct sockaddr_in6& address)
{
if (address.sin6_family == AF_INET6)
return IPAddress { address.sin6_addr };
if (address.sin6_family == AF_INET)
return IPAddress {reinterpret_cast<const struct sockaddr_in&>(address).sin_addr };
return { };
}
}
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