153 lines
5.4 KiB
C++
153 lines
5.4 KiB
C++
/*
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* Copyright (C) 2015 Apple Inc. All rights reserved.
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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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* 1. 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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* 2. 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 distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ClientOrigin.h"
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#include "SecurityOriginData.h"
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#include <wtf/text/StringHash.h>
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#include <wtf/text/WTFString.h>
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namespace WebCore {
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class SecurityOrigin;
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class IDBDatabaseIdentifier {
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public:
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IDBDatabaseIdentifier() { }
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IDBDatabaseIdentifier(WTF::HashTableDeletedValueType)
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: m_databaseName(WTF::HashTableDeletedValue)
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{
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}
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WEBCORE_EXPORT IDBDatabaseIdentifier(const String& databaseName, SecurityOriginData&& openingOrigin, SecurityOriginData&& mainFrameOrigin, bool isTransient = false);
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IDBDatabaseIdentifier isolatedCopy() const;
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bool isHashTableDeletedValue() const
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{
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return m_databaseName.isHashTableDeletedValue();
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}
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unsigned hash() const
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{
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unsigned nameHash = StringHash::hash(m_databaseName);
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unsigned originHash = m_origin.hash();
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unsigned transientHash = m_isTransient;
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unsigned hashCodes[3] = { nameHash, originHash, transientHash };
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return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
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}
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bool isValid() const
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{
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return !m_databaseName.isNull()
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&& !m_databaseName.isHashTableDeletedValue();
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}
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bool isEmpty() const
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{
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return m_databaseName.isNull();
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}
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bool operator==(const IDBDatabaseIdentifier& other) const
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{
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return other.m_databaseName == m_databaseName && other.m_origin == m_origin && other.m_isTransient == m_isTransient;
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}
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const String& databaseName() const { return m_databaseName; }
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const ClientOrigin& origin() const { return m_origin; }
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bool isTransient() const { return m_isTransient; }
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String databaseDirectoryRelativeToRoot(const String& rootDirectory, const String& versionString="v1") const;
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static String databaseDirectoryRelativeToRoot(const SecurityOriginData& topLevelOrigin, const SecurityOriginData& openingOrigin, const String& rootDirectory, const String& versionString);
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template<class Encoder> void encode(Encoder&) const;
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template<class Decoder> static std::optional<IDBDatabaseIdentifier> decode(Decoder&);
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#if !LOG_DISABLED
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String loggingString() const;
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#endif
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bool isRelatedToOrigin(const SecurityOriginData& other) const { return m_origin.isRelated(other); }
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private:
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String m_databaseName;
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ClientOrigin m_origin;
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bool m_isTransient { false };
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};
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struct IDBDatabaseIdentifierHash {
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static unsigned hash(const IDBDatabaseIdentifier& a) { return a.hash(); }
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static bool equal(const IDBDatabaseIdentifier& a, const IDBDatabaseIdentifier& b) { return a == b; }
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static const bool safeToCompareToEmptyOrDeleted = false;
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};
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struct IDBDatabaseIdentifierHashTraits : WTF::SimpleClassHashTraits<IDBDatabaseIdentifier> {
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static const bool hasIsEmptyValueFunction = true;
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static const bool emptyValueIsZero = false;
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static bool isEmptyValue(const IDBDatabaseIdentifier& info) { return info.isEmpty(); }
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};
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template<class Encoder>
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void IDBDatabaseIdentifier::encode(Encoder& encoder) const
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{
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encoder << m_databaseName << m_origin << m_isTransient;
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}
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template<class Decoder>
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std::optional<IDBDatabaseIdentifier> IDBDatabaseIdentifier::decode(Decoder& decoder)
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{
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std::optional<String> databaseName;
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decoder >> databaseName;
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if (!databaseName)
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return std::nullopt;
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std::optional<ClientOrigin> origin;
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decoder >> origin;
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if (!origin)
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return std::nullopt;
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std::optional<bool> isTransient;
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decoder >> isTransient;
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if (!isTransient)
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return std::nullopt;
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IDBDatabaseIdentifier identifier;
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identifier.m_databaseName = WTFMove(*databaseName); // FIXME: When decoding from IPC, databaseName can be null, and the non-empty constructor asserts that this is not the case.
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identifier.m_origin = WTFMove(*origin);
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identifier.m_isTransient = *isTransient;
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return identifier;
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}
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} // namespace WebCore
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namespace WTF {
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template<> struct HashTraits<WebCore::IDBDatabaseIdentifier> : WebCore::IDBDatabaseIdentifierHashTraits { };
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template<> struct DefaultHash<WebCore::IDBDatabaseIdentifier> : WebCore::IDBDatabaseIdentifierHash { };
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} // namespace WTF
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