Source/WebKit/WebProcess/WebStorage/StorageNamespaceImpl.cpp

/*
 * Copyright (C) 2013-2017 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
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#include "config.h"
#include "StorageNamespaceImpl.h"

#include "StorageAreaImpl.h"
#include "StorageAreaMap.h"
#include "WebPage.h"
#include "WebPageGroupProxy.h"
#include "WebProcess.h"
#include <WebCore/Frame.h>
#include <WebCore/PageGroup.h>
#include <WebCore/SecurityOrigin.h>
#include <WebCore/Settings.h>
#include <WebCore/StorageType.h>

namespace WebKit {
using namespace WebCore;

Ref<StorageNamespaceImpl> StorageNamespaceImpl::createSessionStorageNamespace(uint64_t identifier, unsigned quotaInBytes)
{
    return adoptRef(*new StorageNamespaceImpl(StorageType::Session, identifier, nullptr, quotaInBytes));
}

Ref<StorageNamespaceImpl> StorageNamespaceImpl::createEphemeralLocalStorageNamespace(uint64_t identifier, unsigned quotaInBytes)
{
    return createLocalStorageNamespace(identifier, quotaInBytes, IsEphemeral::Yes);
}

Ref<StorageNamespaceImpl> StorageNamespaceImpl::createLocalStorageNamespace(uint64_t identifier, unsigned quotaInBytes, IsEphemeral isEphemeral)
{
    return adoptRef(*new StorageNamespaceImpl(isEphemeral == IsEphemeral::Yes ? StorageType::EphemeralLocal : StorageType::Local, identifier, nullptr, quotaInBytes));
}

Ref<StorageNamespaceImpl> StorageNamespaceImpl::createTransientLocalStorageNamespace(uint64_t identifier, WebCore::SecurityOrigin& topLevelOrigin, uint64_t quotaInBytes)
{
    return adoptRef(*new StorageNamespaceImpl(StorageType::TransientLocal, identifier, &topLevelOrigin, quotaInBytes));
}

StorageNamespaceImpl::StorageNamespaceImpl(WebCore::StorageType storageType, uint64_t storageNamespaceID, WebCore::SecurityOrigin* topLevelOrigin, unsigned quotaInBytes)
    : m_storageType(storageType)
    , m_storageNamespaceID(storageNamespaceID)
    , m_topLevelOrigin(topLevelOrigin)
    , m_quotaInBytes(quotaInBytes)
{
}

StorageNamespaceImpl::~StorageNamespaceImpl()
{
}

void StorageNamespaceImpl::didDestroyStorageAreaMap(StorageAreaMap& map)
{
    m_storageAreaMaps.remove(map.securityOrigin().data());
}

Ref<StorageArea> StorageNamespaceImpl::storageArea(const SecurityOriginData& securityOrigin)
{
    RefPtr<StorageAreaMap> map;

    auto& slot = m_storageAreaMaps.add(securityOrigin, nullptr).iterator->value;
    if (!slot) {
        map = StorageAreaMap::create(this, securityOrigin.securityOrigin());
        slot = map.get();
    } else
        map = slot;

    return StorageAreaImpl::create(map.releaseNonNull());
}

Ref<StorageNamespace> StorageNamespaceImpl::copy(Page* newPage)
{
    ASSERT(m_storageNamespaceID);

    if (m_storageType == StorageType::Session)
        return createSessionStorageNamespace(WebPage::fromCorePage(newPage)->pageID().toUInt64(), m_quotaInBytes);

    ASSERT(m_storageType == StorageType::EphemeralLocal);
    auto newNamespace = adoptRef(*new StorageNamespaceImpl(m_storageType, m_storageNamespaceID, m_topLevelOrigin.get(), m_quotaInBytes));

    return newNamespace;
}

} // namespace WebKit