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/*
* Copyright (C) 2014-2017 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
* 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 "WebStorageNamespaceProvider.h"
#include "NetworkProcessConnection.h"
#include "NetworkStorageManagerMessages.h"
#include "WebPage.h"
#include "WebPageInlines.h"
#include "WebProcess.h"
#include <wtf/HashMap.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/WeakPtr.h>
namespace WebKit {
using namespace WebCore;
static WeakPtr<WebStorageNamespaceProvider>& existingStorageNameSpaceProvider()
{
static NeverDestroyed<WeakPtr<WebStorageNamespaceProvider>> storageNameSpaceProvider;
return storageNameSpaceProvider.get();
}
Ref<WebStorageNamespaceProvider> WebStorageNamespaceProvider::getOrCreate()
{
if (auto& provider = existingStorageNameSpaceProvider())
return Ref { *provider.get() };
return adoptRef(*new WebStorageNamespaceProvider());
}
void WebStorageNamespaceProvider::incrementUseCount(const StorageNamespaceImpl::Identifier identifier)
{
if (auto& provider = existingStorageNameSpaceProvider()) {
auto& sessionStorageNamespaces = provider->m_sessionStorageNamespaces.add(identifier, SessionStorageNamespaces { }).iterator->value;
++sessionStorageNamespaces.useCount;
}
}
void WebStorageNamespaceProvider::decrementUseCount(const StorageNamespaceImpl::Identifier identifier)
{
if (auto& provider = existingStorageNameSpaceProvider()) {
auto iterator = provider->m_sessionStorageNamespaces.find(identifier);
ASSERT(iterator != provider->m_sessionStorageNamespaces.end());
auto& sessionStorageNamespaces = iterator->value;
ASSERT(sessionStorageNamespaces.useCount);
if (!--sessionStorageNamespaces.useCount)
provider->m_sessionStorageNamespaces.remove(identifier);
}
}
WebStorageNamespaceProvider::WebStorageNamespaceProvider()
{
existingStorageNameSpaceProvider() = *this;
}
WebStorageNamespaceProvider::~WebStorageNamespaceProvider() = default;
Ref<WebCore::StorageNamespace> WebStorageNamespaceProvider::createLocalStorageNamespace(unsigned quota, PAL::SessionID sessionID)
{
ASSERT_UNUSED(sessionID, sessionID == WebProcess::singleton().sessionID());
return StorageNamespaceImpl::createLocalStorageNamespace(quota);
}
Ref<WebCore::StorageNamespace> WebStorageNamespaceProvider::createTransientLocalStorageNamespace(WebCore::SecurityOrigin& topLevelOrigin, unsigned quota, PAL::SessionID sessionID)
{
ASSERT_UNUSED(sessionID, sessionID == WebProcess::singleton().sessionID());
return StorageNamespaceImpl::createTransientLocalStorageNamespace(topLevelOrigin, quota);
}
RefPtr<WebCore::StorageNamespace> WebStorageNamespaceProvider::sessionStorageNamespace(const WebCore::SecurityOrigin& topLevelOrigin, WebCore::Page& page, ShouldCreateNamespace shouldCreate)
{
ASSERT(sessionStorageQuota() != WebCore::StorageMap::noQuota);
RefPtr webPage = WebPage::fromCorePage(page);
if (!webPage)
return nullptr;
// The identifier of a session storage namespace is the WebPageProxyIdentifier. It is possible we have several WebPage objects in a single process for the same
// WebPageProxyIdentifier and these need to share the same namespace instance so we know where to route the IPC to.
auto namespacesIt = m_sessionStorageNamespaces.find(webPage->sessionStorageNamespaceIdentifier());
if (namespacesIt == m_sessionStorageNamespaces.end()) {
if (shouldCreate == ShouldCreateNamespace::No)
return nullptr;
namespacesIt = m_sessionStorageNamespaces.set(webPage->sessionStorageNamespaceIdentifier(), SessionStorageNamespaces { }).iterator;
}
auto& sessionStorageNamespacesMap = namespacesIt->value.map;
auto it = sessionStorageNamespacesMap.find(topLevelOrigin.data());
if (it == sessionStorageNamespacesMap.end()) {
if (shouldCreate == ShouldCreateNamespace::No)
return nullptr;
auto sessionStorageNamespace = StorageNamespaceImpl::createSessionStorageNamespace(webPage->sessionStorageNamespaceIdentifier(), webPage->identifier(), topLevelOrigin, sessionStorageQuota());
it = sessionStorageNamespacesMap.set(topLevelOrigin.data(), WTFMove(sessionStorageNamespace)).iterator;
}
return it->value;
}
void WebStorageNamespaceProvider::copySessionStorageNamespace(WebCore::Page& srcPage, WebCore::Page& dstPage)
{
ASSERT(sessionStorageQuota() != WebCore::StorageMap::noQuota);
const auto& srcWebPage = *WebPage::fromCorePage(srcPage);
const auto& dstWebPage = *WebPage::fromCorePage(dstPage);
auto srcNamespacesIt = m_sessionStorageNamespaces.find(srcWebPage.sessionStorageNamespaceIdentifier());
if (srcNamespacesIt == m_sessionStorageNamespaces.end())
return;
ASSERT(srcNamespacesIt->value.useCount);
auto& srcNamespacesMap = srcNamespacesIt->value.map;
auto& dstSessionStorageNamespaces = static_cast<WebStorageNamespaceProvider&>(dstPage.storageNamespaceProvider()).m_sessionStorageNamespaces;
auto dstNamespacesIt = dstSessionStorageNamespaces.find(dstWebPage.sessionStorageNamespaceIdentifier());
ASSERT(dstNamespacesIt != dstSessionStorageNamespaces.end());
ASSERT(dstNamespacesIt->value.useCount == 1);
auto& dstNamespacesMap = dstNamespacesIt->value.map;
if (auto networkProcessConnection = WebProcess::singleton().existingNetworkProcessConnection())
networkProcessConnection->connection().send(Messages::NetworkStorageManager::CloneSessionStorageNamespace(srcWebPage.sessionStorageNamespaceIdentifier(), dstWebPage.sessionStorageNamespaceIdentifier()), 0);
for (auto& [origin, srcNamespace] : srcNamespacesMap)
dstNamespacesMap.set(origin, srcNamespace->copy(dstPage));
}
}
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