| /* |
| * Copyright (C) 2019 Igalia S.L. |
| * |
| * 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 <wtf/HashMap.h> |
| #include <wtf/Lock.h> |
| #include <wtf/MonotonicTime.h> |
| #include <wtf/Optional.h> |
| #include <wtf/RunLoop.h> |
| #include <wtf/Vector.h> |
| #include <wtf/glib/GRefPtr.h> |
| #include <wtf/text/CString.h> |
| |
| typedef struct _GInetAddress GInetAddress; |
| |
| namespace WebKit { |
| |
| class DNSCache { |
| public: |
| DNSCache(); |
| ~DNSCache() = default; |
| |
| enum class Type { Default, IPv4Only, IPv6Only }; |
| Optional<Vector<GRefPtr<GInetAddress>>> lookup(const CString& host, Type = Type::Default); |
| void update(const CString& host, Vector<GRefPtr<GInetAddress>>&&, Type = Type::Default); |
| void clear(); |
| |
| private: |
| struct CachedResponse { |
| Vector<GRefPtr<GInetAddress>> addressList; |
| MonotonicTime expirationTime; |
| }; |
| |
| using DNSCacheMap = HashMap<CString, CachedResponse>; |
| |
| DNSCacheMap& mapForType(Type); |
| void removeExpiredResponsesFired(); |
| void removeExpiredResponsesInMap(DNSCacheMap&); |
| void pruneResponsesInMap(DNSCacheMap&); |
| |
| Lock m_lock; |
| DNSCacheMap m_dnsMap; |
| #if GLIB_CHECK_VERSION(2, 59, 0) |
| DNSCacheMap m_ipv4Map; |
| DNSCacheMap m_ipv6Map; |
| #endif |
| RunLoop::Timer<DNSCache> m_expiredTimer; |
| }; |
| |
| } // namespace WebKit |