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/*
* Copyright (C) 2015 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. ``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 "ClientOrigin.h"
#include "SecurityOriginData.h"
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class SecurityOrigin;
class IDBDatabaseIdentifier {
public:
IDBDatabaseIdentifier() { }
IDBDatabaseIdentifier(WTF::HashTableDeletedValueType)
: m_databaseName(WTF::HashTableDeletedValue)
{
}
WEBCORE_EXPORT IDBDatabaseIdentifier(const String& databaseName, SecurityOriginData&& openingOrigin, SecurityOriginData&& mainFrameOrigin, bool isTransient = false);
IDBDatabaseIdentifier isolatedCopy() const;
bool isHashTableDeletedValue() const
{
return m_databaseName.isHashTableDeletedValue();
}
unsigned hash() const
{
unsigned nameHash = StringHash::hash(m_databaseName);
unsigned originHash = m_origin.hash();
unsigned transientHash = m_isTransient;
unsigned hashCodes[3] = { nameHash, originHash, transientHash };
return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
}
bool isValid() const
{
return !m_databaseName.isNull()
&& !m_databaseName.isHashTableDeletedValue();
}
bool isEmpty() const
{
return m_databaseName.isNull();
}
bool operator==(const IDBDatabaseIdentifier& other) const
{
return other.m_databaseName == m_databaseName && other.m_origin == m_origin && other.m_isTransient == m_isTransient;
}
const String& databaseName() const { return m_databaseName; }
const ClientOrigin& origin() const { return m_origin; }
bool isTransient() const { return m_isTransient; }
String databaseDirectoryRelativeToRoot(const String& rootDirectory, const String& versionString="v1") const;
static String databaseDirectoryRelativeToRoot(const SecurityOriginData& topLevelOrigin, const SecurityOriginData& openingOrigin, const String& rootDirectory, const String& versionString);
template<class Encoder> void encode(Encoder&) const;
template<class Decoder> static std::optional<IDBDatabaseIdentifier> decode(Decoder&);
#if !LOG_DISABLED
String loggingString() const;
#endif
bool isRelatedToOrigin(const SecurityOriginData& other) const { return m_origin.isRelated(other); }
private:
String m_databaseName;
ClientOrigin m_origin;
bool m_isTransient { false };
};
struct IDBDatabaseIdentifierHash {
static unsigned hash(const IDBDatabaseIdentifier& a) { return a.hash(); }
static bool equal(const IDBDatabaseIdentifier& a, const IDBDatabaseIdentifier& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = false;
};
struct IDBDatabaseIdentifierHashTraits : WTF::SimpleClassHashTraits<IDBDatabaseIdentifier> {
static const bool hasIsEmptyValueFunction = true;
static const bool emptyValueIsZero = false;
static bool isEmptyValue(const IDBDatabaseIdentifier& info) { return info.isEmpty(); }
};
template<class Encoder>
void IDBDatabaseIdentifier::encode(Encoder& encoder) const
{
encoder << m_databaseName << m_origin << m_isTransient;
}
template<class Decoder>
std::optional<IDBDatabaseIdentifier> IDBDatabaseIdentifier::decode(Decoder& decoder)
{
std::optional<String> databaseName;
decoder >> databaseName;
if (!databaseName)
return std::nullopt;
std::optional<ClientOrigin> origin;
decoder >> origin;
if (!origin)
return std::nullopt;
std::optional<bool> isTransient;
decoder >> isTransient;
if (!isTransient)
return std::nullopt;
IDBDatabaseIdentifier identifier;
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.
identifier.m_origin = WTFMove(*origin);
identifier.m_isTransient = *isTransient;
return identifier;
}
} // namespace WebCore
namespace WTF {
template<> struct HashTraits<WebCore::IDBDatabaseIdentifier> : WebCore::IDBDatabaseIdentifierHashTraits { };
template<> struct DefaultHash<WebCore::IDBDatabaseIdentifier> : WebCore::IDBDatabaseIdentifierHash { };
} // namespace WTF
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