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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/storage/storage_controller.h"
#include "base/feature_list.h"
#include "base/system/sys_info.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/thread_safe_browser_interface_broker_proxy.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/public/platform/web_content_settings_client.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/modules/storage/cached_storage_area.h"
#include "third_party/blink/renderer/modules/storage/storage_namespace.h"
#include "third_party/blink/renderer/platform/scheduler/public/main_thread.h"
#include "third_party/blink/renderer/platform/scheduler/public/thread_scheduler.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
#include "third_party/blink/renderer/platform/wtf/text/string_utf8_adaptor.h"
namespace blink {
namespace {
const size_t kStorageControllerTotalCacheLimitInBytesLowEnd = 1 * 1024 * 1024;
const size_t kStorageControllerTotalCacheLimitInBytes = 5 * 1024 * 1024;
StorageController::DomStorageConnection GetDomStorageConnection() {
StorageController::DomStorageConnection connection;
mojo::Remote<mojom::blink::DomStorageProvider> provider;
Platform::Current()->GetBrowserInterfaceBroker()->GetInterface(
provider.BindNewPipeAndPassReceiver());
mojo::PendingRemote<mojom::blink::DomStorageClient> client;
connection.client_receiver = client.InitWithNewPipeAndPassReceiver();
provider->BindDomStorage(
connection.dom_storage_remote.BindNewPipeAndPassReceiver(),
std::move(client));
return connection;
}
} // namespace
// static
StorageController* StorageController::GetInstance() {
DEFINE_STATIC_LOCAL(StorageController, gCachedStorageAreaController,
(GetDomStorageConnection(),
base::SysInfo::IsLowEndDeviceOrPartialLowEndModeEnabled()
? kStorageControllerTotalCacheLimitInBytesLowEnd
: kStorageControllerTotalCacheLimitInBytes));
return &gCachedStorageAreaController;
}
// static
bool StorageController::CanAccessStorageArea(LocalFrame* frame,
StorageArea::StorageType type) {
switch (type) {
case StorageArea::StorageType::kLocalStorage:
return frame->AllowStorageAccessSyncAndNotify(
WebContentSettingsClient::StorageType::kLocalStorage);
case StorageArea::StorageType::kSessionStorage:
return frame->AllowStorageAccessSyncAndNotify(
WebContentSettingsClient::StorageType::kSessionStorage);
}
return true;
}
StorageController::StorageController(DomStorageConnection connection,
size_t total_cache_limit)
: namespaces_(MakeGarbageCollected<
GCedHeapHashMap<String, WeakMember<StorageNamespace>>>()),
total_cache_limit_(total_cache_limit),
dom_storage_remote_(std::move(connection.dom_storage_remote)) {
// May be null in tests.
if (connection.client_receiver)
dom_storage_client_receiver_.Bind(std::move(connection.client_receiver));
}
StorageNamespace* StorageController::CreateSessionStorageNamespace(
Page& page,
const String& namespace_id) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
// There is an edge case where a user closes a tab that has other tabs in the
// same process, then restores that tab. The old namespace might still be
// around.
auto it = namespaces_->find(namespace_id);
if (it != namespaces_->end())
return it->value.Get();
StorageNamespace* ns =
MakeGarbageCollected<StorageNamespace>(page, this, namespace_id);
namespaces_->insert(namespace_id, ns);
return ns;
}
size_t StorageController::TotalCacheSize() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
size_t total = 0;
if (local_storage_namespace_)
total = local_storage_namespace_->TotalCacheSize();
for (const auto& pair : *namespaces_)
total += pair.value->TotalCacheSize();
return total;
}
void StorageController::ClearAreasIfNeeded() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (TotalCacheSize() < total_cache_limit_)
return;
if (local_storage_namespace_)
local_storage_namespace_->CleanUpUnusedAreas();
for (auto& pair : *namespaces_)
pair.value->CleanUpUnusedAreas();
}
scoped_refptr<CachedStorageArea> StorageController::GetLocalStorageArea(
LocalDOMWindow* local_dom_window,
mojo::PendingRemote<mojom::blink::StorageArea> local_storage_area,
StorageNamespace::StorageContext context) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
EnsureLocalStorageNamespaceCreated();
return local_storage_namespace_->GetCachedArea(
local_dom_window, std::move(local_storage_area), context);
}
void StorageController::AddLocalStorageInspectorStorageAgent(
InspectorDOMStorageAgent* agent) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
EnsureLocalStorageNamespaceCreated();
local_storage_namespace_->AddInspectorStorageAgent(agent);
}
void StorageController::RemoveLocalStorageInspectorStorageAgent(
InspectorDOMStorageAgent* agent) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
EnsureLocalStorageNamespaceCreated();
local_storage_namespace_->RemoveInspectorStorageAgent(agent);
}
void StorageController::EnsureLocalStorageNamespaceCreated() {
if (local_storage_namespace_)
return;
local_storage_namespace_ = MakeGarbageCollected<StorageNamespace>(this);
}
void StorageController::ResetStorageAreaAndNamespaceConnections() {
for (auto& ns : *namespaces_) {
if (ns.value)
ns.value->ResetStorageAreaAndNamespaceConnections();
}
if (local_storage_namespace_)
local_storage_namespace_->ResetStorageAreaAndNamespaceConnections();
}
} // namespace blink
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