WebKit/Source/WebKitLegacy/Storage/StorageAreaImpl.cpp at main · DaRkZ2012/WebKit · GitHub

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* 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.

#include "StorageAreaImpl.h"

#include "StorageAreaSync.h"

#include "StorageSyncManager.h"

#include "StorageTracker.h"

#include <WebCore/FrameInlines.h>

#include <WebCore/LocalDOMWindow.h>

#include <WebCore/LocalFrameInlines.h>

#include <WebCore/Page.h>

#include <WebCore/SecurityOrigin.h>

#include <WebCore/SecurityOriginData.h>

#include <WebCore/Storage.h>

#include <WebCore/StorageEventDispatcher.h>

#include <WebCore/StorageType.h>

#include <wtf/MainThread.h>

using namespace WebCore;

namespace WebKit {

StorageAreaImpl::~StorageAreaImpl()

{

ASSERT(isMainThread());

}

inline StorageAreaImpl::StorageAreaImpl(StorageType storageType, const SecurityOrigin& origin, RefPtr<StorageSyncManager>&& syncManager, unsigned quota)

: m_storageType(storageType)

, m_securityOrigin(origin)

, m_storageMap(quota)

, m_storageSyncManager(WTFMove(syncManager))

, m_accessCount(0)

, m_closeDatabaseTimer(*this, &StorageAreaImpl::closeDatabaseTimerFired)

{

ASSERT(isMainThread());

// Accessing the shared global StorageTracker when a StorageArea is created

// ensures that the tracker is properly initialized before anyone actually needs to use it.

StorageTracker::tracker();

}

Ref<StorageAreaImpl> StorageAreaImpl::create(StorageType storageType, const SecurityOrigin& origin, RefPtr<StorageSyncManager>&& syncManager, unsigned quota)

{

Ref<StorageAreaImpl> area = adoptRef(*new StorageAreaImpl(storageType, origin, WTFMove(syncManager), quota));

// FIXME: If there's no backing storage for LocalStorage, the default WebKit behavior should be that of private browsing,

// not silently ignoring it. https://bugs.webkit.org/show_bug.cgi?id=25894

if (area->m_storageSyncManager) {

area->m_storageAreaSync = StorageAreaSync::create(area->m_storageSyncManager.get(), area.copyRef(), area->m_securityOrigin->data().databaseIdentifier());

ASSERT(area->m_storageAreaSync);

}

return area;

}

Ref<StorageAreaImpl> StorageAreaImpl::copy()

{

ASSERT(!m_isShutdown);

return adoptRef(*new StorageAreaImpl(*this));

}

StorageAreaImpl::StorageAreaImpl(const StorageAreaImpl& area)

: m_storageType(area.m_storageType)

, m_securityOrigin(area.m_securityOrigin)

, m_storageMap(area.m_storageMap)

, m_storageSyncManager(area.m_storageSyncManager)

#if ASSERT_ENABLED

, m_isShutdown(area.m_isShutdown)

#endif

, m_accessCount(0)

, m_closeDatabaseTimer(*this, &StorageAreaImpl::closeDatabaseTimerFired)

{

ASSERT(isMainThread());

ASSERT(!m_isShutdown);

}

StorageType StorageAreaImpl::storageType() const

{

return m_storageType;

}

unsigned StorageAreaImpl::length()

{

ASSERT(!m_isShutdown);

blockUntilImportComplete();

return m_storageMap.length();

}

String StorageAreaImpl::key(unsigned index)

{

ASSERT(!m_isShutdown);

blockUntilImportComplete();

return m_storageMap.key(index);

}

String StorageAreaImpl::item(const String& key)

{

ASSERT(!m_isShutdown);

blockUntilImportComplete();

return m_storageMap.getItem(key);

}

void StorageAreaImpl::setItem(LocalFrame& sourceFrame, const String& key, const String& value, bool& quotaException)

{

ASSERT(!m_isShutdown);

ASSERT(!value.isNull());

blockUntilImportComplete();

String oldValue;

m_storageMap.setItem(key, value, oldValue, quotaException);

if (quotaException)

return;

if (oldValue == value)

return;

if (m_storageAreaSync)

m_storageAreaSync->scheduleItemForSync(key, value);

dispatchStorageEvent(key, oldValue, value, sourceFrame);

}

void StorageAreaImpl::removeItem(LocalFrame& sourceFrame, const String& key)

{

ASSERT(!m_isShutdown);

blockUntilImportComplete();

String oldValue;

m_storageMap.removeItem(key, oldValue);

if (oldValue.isNull())

return;

if (m_storageAreaSync)

m_storageAreaSync->scheduleItemForSync(key, String());

dispatchStorageEvent(key, oldValue, String(), sourceFrame);

}

void StorageAreaImpl::clear(LocalFrame& sourceFrame)

{

ASSERT(!m_isShutdown);

blockUntilImportComplete();

if (!m_storageMap.length())

return;

m_storageMap.clear();

if (m_storageAreaSync)

m_storageAreaSync->scheduleClear();

dispatchStorageEvent(String(), String(), String(), sourceFrame);

}

bool StorageAreaImpl::contains(const String& key)

{

ASSERT(!m_isShutdown);

blockUntilImportComplete();

return m_storageMap.contains(key);

}

void StorageAreaImpl::importItems(HashMap<String, String>&& items)

{

ASSERT(!m_isShutdown);

ASSERT(!isMainThread());

m_storageMap.importItems(WTFMove(items));

}

void StorageAreaImpl::close()

{

if (m_storageAreaSync)

m_storageAreaSync->scheduleFinalSync();

#if ASSERT_ENABLED

m_isShutdown = true;

#endif

}

void StorageAreaImpl::clearForOriginDeletion()

{

ASSERT(!m_isShutdown);

blockUntilImportComplete();

m_storageMap.clear();

if (m_storageAreaSync) {

m_storageAreaSync->scheduleClear();

m_storageAreaSync->scheduleCloseDatabase();

}

void StorageAreaImpl::sync()

{

ASSERT(!m_isShutdown);

blockUntilImportComplete();

if (m_storageAreaSync)

m_storageAreaSync->scheduleSync();

}

void StorageAreaImpl::blockUntilImportComplete() const

{

if (m_storageAreaSync)

m_storageAreaSync->blockUntilImportComplete();

}

size_t StorageAreaImpl::memoryBytesUsedByCache()

{

return 0;

}

void StorageAreaImpl::incrementAccessCount()

{

m_accessCount++;

if (m_closeDatabaseTimer.isActive())

m_closeDatabaseTimer.stop();

}

void StorageAreaImpl::decrementAccessCount()

{

ASSERT(m_accessCount);

--m_accessCount;

if (!m_accessCount) {

if (m_closeDatabaseTimer.isActive())

m_closeDatabaseTimer.stop();

m_closeDatabaseTimer.startOneShot(StorageTracker::tracker().storageDatabaseIdleInterval());

}

void StorageAreaImpl::closeDatabaseTimerFired()

{

blockUntilImportComplete();

if (m_storageAreaSync)

m_storageAreaSync->scheduleCloseDatabase();

}

void StorageAreaImpl::closeDatabaseIfIdle()

{

if (m_closeDatabaseTimer.isActive()) {

ASSERT(!m_accessCount);

m_closeDatabaseTimer.stop();

closeDatabaseTimerFired();

}

void StorageAreaImpl::dispatchStorageEvent(const String& key, const String& oldValue, const String& newValue, LocalFrame& sourceFrame)

{

auto* page = sourceFrame.page();

if (!page)

return;

auto isSourceStorage = [&sourceFrame](Storage& storage) {

return storage.frame() == &sourceFrame;

};

if (isLocalStorage(m_storageType))

StorageEventDispatcher::dispatchLocalStorageEvents(key, oldValue, newValue, &page->group(), m_securityOrigin, sourceFrame.document()->url().string(), WTFMove(isSourceStorage));

else

StorageEventDispatcher::dispatchSessionStorageEvents(key, oldValue, newValue, *page, m_securityOrigin, sourceFrame.document()->url().string(), WTFMove(isSourceStorage));

}

void StorageAreaImpl::sessionChanged(bool isNewSessionPersistent)

{

ASSERT(isMainThread());

// If import is not completed, background storage thread may be modifying m_storageMap.

blockUntilImportComplete();

m_storageMap.clear();

if (isNewSessionPersistent && !m_storageAreaSync && m_storageSyncManager) {

m_storageAreaSync = StorageAreaSync::create(m_storageSyncManager.get(), *this, m_securityOrigin->data().databaseIdentifier());

return;

}

if (!isNewSessionPersistent && m_storageAreaSync) {

m_storageAreaSync->scheduleFinalSync();

m_storageAreaSync = nullptr;

}

} // namespace WebCore

WebKit/Source/WebKitLegacy/Storage/StorageAreaImpl.cpp at main · DaRkZ2012/WebKit · GitHub

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