1 files changed, 242 insertions, 0 deletions
diff --git a/Source/WebCore/storage/StorageAreaImpl.cpp b/Source/WebCore/storage/StorageAreaImpl.cpp
new file mode 100644
index 0000000..54df135
--- /dev/null
+++ b/Source/WebCore/storage/StorageAreaImpl.cpp
@@ -0,0 +1,242 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#include "config.h"
+#include "StorageAreaImpl.h"
+
+#if ENABLE(DOM_STORAGE)
+
+#include "ExceptionCode.h"
+#include "Frame.h"
+#include "Page.h"
+#include "Settings.h"
+#include "StorageAreaSync.h"
+#include "StorageEventDispatcher.h"
+#include "StorageMap.h"
+#include "StorageSyncManager.h"
+
+namespace WebCore {
+
+StorageAreaImpl::~StorageAreaImpl()
+{
+    ASSERT(isMainThread());
+}
+
+inline StorageAreaImpl::StorageAreaImpl(StorageType storageType, PassRefPtr<SecurityOrigin> origin, PassRefPtr<StorageSyncManager> syncManager, unsigned quota)
+    : m_storageType(storageType)
+    , m_securityOrigin(origin)
+    , m_storageMap(StorageMap::create(quota))
+    , m_storageSyncManager(syncManager)
+#ifndef NDEBUG
+    , m_isShutdown(false)
+#endif
+{
+    ASSERT(isMainThread());
+    ASSERT(m_securityOrigin);
+    ASSERT(m_storageMap);
+}
+
+PassRefPtr<StorageAreaImpl> StorageAreaImpl::create(StorageType storageType, PassRefPtr<SecurityOrigin> origin, PassRefPtr<StorageSyncManager> syncManager, unsigned quota)
+{
+    RefPtr<StorageAreaImpl> area = adoptRef(new StorageAreaImpl(storageType, origin, 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, area.get(), area->m_securityOrigin->databaseIdentifier());
+        ASSERT(area->m_storageAreaSync);
+    }
+
+    return area.release();
+}
+
+PassRefPtr<StorageAreaImpl> StorageAreaImpl::copy()
+{
+    ASSERT(!m_isShutdown);
+    return adoptRef(new StorageAreaImpl(this));
+}
+
+StorageAreaImpl::StorageAreaImpl(StorageAreaImpl* area)
+    : m_storageType(area->m_storageType)
+    , m_securityOrigin(area->m_securityOrigin)
+    , m_storageMap(area->m_storageMap)
+    , m_storageSyncManager(area->m_storageSyncManager)
+#ifndef NDEBUG
+    , m_isShutdown(area->m_isShutdown)
+#endif
+{
+    ASSERT(isMainThread());
+    ASSERT(m_securityOrigin);
+    ASSERT(m_storageMap);
+    ASSERT(!m_isShutdown);
+}
+
+static bool privateBrowsingEnabled(Frame* frame)
+{
+#if PLATFORM(ANDROID)
+    if (!frame)
+        return false;
+#endif
+#if PLATFORM(CHROMIUM)
+    // The frame pointer can be NULL in Chromium since this call is made in a different
+    // process from where the Frame object exists.  Luckily, private browseing is
+    // implemented differently in Chromium, so it'd never return true anyway.
+    ASSERT(!frame);
+    return false;
+#else
+    return frame->page()->settings()->privateBrowsingEnabled();
+#endif
+}
+
+unsigned StorageAreaImpl::length() const
+{
+    ASSERT(!m_isShutdown);
+    blockUntilImportComplete();
+
+    return m_storageMap->length();
+}
+
+String StorageAreaImpl::key(unsigned index) const
+{
+    ASSERT(!m_isShutdown);
+    blockUntilImportComplete();
+
+    return m_storageMap->key(index);
+}
+
+String StorageAreaImpl::getItem(const String& key) const
+{
+    ASSERT(!m_isShutdown);
+    blockUntilImportComplete();
+
+    return m_storageMap->getItem(key);
+}
+
+String StorageAreaImpl::setItem(const String& key, const String& value, ExceptionCode& ec, Frame* frame)
+{
+    ASSERT(!m_isShutdown);
+    ASSERT(!value.isNull());
+    blockUntilImportComplete();
+
+    if (privateBrowsingEnabled(frame)) {
+        ec = QUOTA_EXCEEDED_ERR;
+        return String();
+    }
+
+    String oldValue;
+    bool quotaException;
+    RefPtr<StorageMap> newMap = m_storageMap->setItem(key, value, oldValue, quotaException);
+    if (newMap)
+        m_storageMap = newMap.release();
+
+    if (quotaException) {
+        ec = QUOTA_EXCEEDED_ERR;
+        return oldValue;
+    }
+
+    if (oldValue == value)
+        return oldValue;
+
+    if (m_storageAreaSync)
+        m_storageAreaSync->scheduleItemForSync(key, value);
+    StorageEventDispatcher::dispatch(key, oldValue, value, m_storageType, m_securityOrigin.get(), frame);
+    return oldValue;
+}
+
+String StorageAreaImpl::removeItem(const String& key, Frame* frame)
+{
+    ASSERT(!m_isShutdown);
+    blockUntilImportComplete();
+
+    if (privateBrowsingEnabled(frame))
+        return String();
+
+    String oldValue;
+    RefPtr<StorageMap> newMap = m_storageMap->removeItem(key, oldValue);
+    if (newMap)
+        m_storageMap = newMap.release();
+
+    if (oldValue.isNull())
+        return oldValue;
+
+    if (m_storageAreaSync)
+        m_storageAreaSync->scheduleItemForSync(key, String());
+    StorageEventDispatcher::dispatch(key, oldValue, String(), m_storageType, m_securityOrigin.get(), frame);
+    return oldValue;
+}
+
+bool StorageAreaImpl::clear(Frame* frame)
+{
+    ASSERT(!m_isShutdown);
+    blockUntilImportComplete();
+
+    if (privateBrowsingEnabled(frame))
+        return false;
+
+    if (!m_storageMap->length())
+        return false;
+
+    unsigned quota = m_storageMap->quota();
+    m_storageMap = StorageMap::create(quota);
+
+    if (m_storageAreaSync)
+        m_storageAreaSync->scheduleClear();
+    StorageEventDispatcher::dispatch(String(), String(), String(), m_storageType, m_securityOrigin.get(), frame);
+    return true;
+}
+
+bool StorageAreaImpl::contains(const String& key) const
+{
+    ASSERT(!m_isShutdown);
+    blockUntilImportComplete();
+
+    return m_storageMap->contains(key);
+}
+
+void StorageAreaImpl::importItem(const String& key, const String& value)
+{
+    ASSERT(!m_isShutdown);
+    m_storageMap->importItem(key, value);
+}
+
+void StorageAreaImpl::close()
+{
+    if (m_storageAreaSync)
+        m_storageAreaSync->scheduleFinalSync();
+
+#ifndef NDEBUG
+    m_isShutdown = true;
+#endif
+}
+
+void StorageAreaImpl::blockUntilImportComplete() const
+{
+    if (m_storageAreaSync)
+        m_storageAreaSync->blockUntilImportComplete();
+}
+
+}
+
+#endif // ENABLE(DOM_STORAGE)