| /* |
| * 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 { }; |
| } |
| |
| } |