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/*
* Copyright (C) 2013-2020 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. 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 "MessageReceiver.h"
#include "StorageAreaIdentifier.h"
#include "StorageAreaImplIdentifier.h"
#include "StorageAreaMapIdentifier.h"
#include <WebCore/SecurityOrigin.h>
#include <WebCore/StorageArea.h>
#include <wtf/Forward.h>
#include <wtf/HashCountedSet.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class SecurityOrigin;
class StorageMap;
struct ClientOrigin;
}
namespace WebKit {
class StorageAreaImpl;
class StorageNamespaceImpl;
class StorageAreaMap final : public IPC::MessageReceiver {
WTF_MAKE_FAST_ALLOCATED;
public:
StorageAreaMap(StorageNamespaceImpl&, Ref<const WebCore::SecurityOrigin>&&);
~StorageAreaMap();
WebCore::StorageType type() const { return m_type; }
unsigned length();
String key(unsigned index);
String item(const String& key);
void setItem(WebCore::LocalFrame& sourceFrame, StorageAreaImpl* sourceArea, const String& key, const String& value, bool& quotaException);
void removeItem(WebCore::LocalFrame& sourceFrame, StorageAreaImpl* sourceArea, const String& key);
void clear(WebCore::LocalFrame& sourceFrame, StorageAreaImpl* sourceArea);
bool contains(const String& key);
// IPC::MessageReceiver
void didReceiveMessage(IPC::Connection&, IPC::Decoder&) final;
const WebCore::SecurityOrigin& securityOrigin() const { return m_securityOrigin.get(); }
StorageAreaMapIdentifier identifier() const { return m_identifier; }
void connect();
void disconnect();
void incrementUseCount();
void decrementUseCount();
private:
void didSetItem(uint64_t mapSeed, const String& key, bool hasError, HashMap<String, String>&&);
void didRemoveItem(uint64_t mapSeed, const String& key, bool hasError, HashMap<String, String>&&);
void didClear(uint64_t mapSeed);
// Message handlers.
void dispatchStorageEvent(const std::optional<StorageAreaImplIdentifier>& sourceStorageAreaID, const String& key, const String& oldValue, const String& newValue, const String& urlString, uint64_t messageIdentifier);
void clearCache(uint64_t messageIdentifier);
void syncOneItem(const String& key, const String& value);
void syncItems(HashMap<String, String>&&);
WebCore::StorageMap& ensureMap();
WebCore::StorageType computeStorageType() const;
WebCore::ClientOrigin clientOrigin() const;
void applyChange(const String& key, const String& newValue);
void dispatchSessionStorageEvent(const std::optional<StorageAreaImplIdentifier>&, const String& key, const String& oldValue, const String& newValue, const String& urlString);
void dispatchLocalStorageEvent(const std::optional<StorageAreaImplIdentifier>&, const String& key, const String& oldValue, const String& newValue, const String& urlString);
enum class SendMode : bool { Async, Sync };
void sendConnectMessage(SendMode);
void connectSync();
void didConnect(StorageAreaIdentifier, HashMap<String, String>&&, uint64_t messageIdentifier);
StorageAreaMapIdentifier m_identifier;
uint64_t m_lastHandledMessageIdentifier { 0 };
StorageNamespaceImpl& m_namespace;
Ref<const WebCore::SecurityOrigin> m_securityOrigin;
std::unique_ptr<WebCore::StorageMap> m_map;
std::optional<StorageAreaIdentifier> m_remoteAreaIdentifier;
HashCountedSet<String> m_pendingValueChanges;
uint64_t m_currentSeed { 1 };
unsigned m_quotaInBytes;
WebCore::StorageType m_type;
uint64_t m_useCount { 0 };
bool m_hasPendingClear { false };
bool m_isWaitingForConnectReply { false };
};
} // namespace WebKit
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