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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.
*/
#ifndef IDBDatabaseIdentifier_h
#define IDBDatabaseIdentifier_h
#if ENABLE(INDEXED_DATABASE)
#include "SecurityOriginData.h"
#include <wtf/Ref.h>
#include <wtf/RefCounted.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class SecurityOrigin;
class IDBDatabaseIdentifier {
public:
IDBDatabaseIdentifier()
{
m_openingOrigin.port = -2;
m_mainFrameOrigin.port = -2;
}
IDBDatabaseIdentifier(WTF::HashTableDeletedValueType)
{
m_openingOrigin.port = -1;
m_mainFrameOrigin.port = -1;
}
IDBDatabaseIdentifier isolatedCopy() const;
bool isHashTableDeletedValue() const
{
return m_openingOrigin.port == -1 && m_mainFrameOrigin.port == -1;
}
unsigned hash() const
{
unsigned nameHash = StringHash::hash(m_databaseName);
unsigned openingProtocolHash = StringHash::hash(m_openingOrigin.protocol);
unsigned openingHostHash = StringHash::hash(m_openingOrigin.host);
unsigned mainFrameProtocolHash = StringHash::hash(m_mainFrameOrigin.protocol);
unsigned mainFrameHostHash = StringHash::hash(m_mainFrameOrigin.host);
unsigned hashCodes[7] = { nameHash, openingProtocolHash, openingHostHash, static_cast<unsigned>(m_openingOrigin.port), mainFrameProtocolHash, mainFrameHostHash, static_cast<unsigned>(m_mainFrameOrigin.port) };
return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
}
IDBDatabaseIdentifier(const String& databaseName, const SecurityOrigin& openingOrigin, const SecurityOrigin& mainFrameOrigin);
bool isValid() const
{
return !m_databaseName.isNull() && m_openingOrigin.port >= 0 && m_mainFrameOrigin.port >= 0;
}
bool isEmpty() const
{
return m_openingOrigin.port == -2 && m_mainFrameOrigin.port == -2;
}
bool operator==(const IDBDatabaseIdentifier& other) const
{
return other.m_databaseName == m_databaseName
&& other.m_openingOrigin == m_openingOrigin
&& other.m_mainFrameOrigin == m_mainFrameOrigin;
}
const String& databaseName() const { return m_databaseName; }
String databaseDirectoryRelativeToRoot(const String& rootDirectory) const;
template<class Encoder> void encode(Encoder&) const;
template<class Decoder> static bool decode(Decoder&, IDBDatabaseIdentifier&);
#ifndef NDEBUG
String debugString() const;
#endif
private:
String m_databaseName;
SecurityOriginData m_openingOrigin;
SecurityOriginData m_mainFrameOrigin;
};
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_openingOrigin << m_mainFrameOrigin;
}
template<class Decoder>
bool IDBDatabaseIdentifier::decode(Decoder& decoder, IDBDatabaseIdentifier& identifier)
{
if (!decoder.decode(identifier.m_databaseName))
return false;
if (!decoder.decode(identifier.m_openingOrigin))
return false;
if (!decoder.decode(identifier.m_mainFrameOrigin))
return false;
return true;
}
} // namespace WebCore
namespace WTF {
template<> struct HashTraits<WebCore::IDBDatabaseIdentifier> : WebCore::IDBDatabaseIdentifierHashTraits { };
template<> struct DefaultHash<WebCore::IDBDatabaseIdentifier> {
typedef WebCore::IDBDatabaseIdentifierHash Hash;
};
} // namespace WTF
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBDatabaseIdentifier_h
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