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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/renderer/worker_thread_dispatcher.h"
#include <utility>
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/lazy_instance.h"
#include "base/no_destructor.h"
#include "base/task/single_thread_task_runner.h"
#include "base/threading/platform_thread.h"
#include "base/threading/thread_local.h"
#include "base/unguessable_token.h"
#include "base/values.h"
#include "content/public/renderer/render_thread.h"
#include "content/public/renderer/worker_thread.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension_features.h"
#include "extensions/common/mojom/event_dispatcher.mojom.h"
#include "extensions/renderer/api/messaging/native_renderer_messaging_service.h"
#include "extensions/renderer/dispatcher.h"
#include "extensions/renderer/extension_interaction_provider.h"
#include "extensions/renderer/extensions_renderer_client.h"
#include "extensions/renderer/native_extension_bindings_system.h"
#include "extensions/renderer/service_worker_data.h"
#include "extensions/renderer/worker_script_context_set.h"
#include "extensions/renderer/worker_thread_util.h"
namespace extensions {
namespace {
constinit thread_local extensions::ServiceWorkerData* service_worker_data =
nullptr;
ServiceWorkerData* GetServiceWorkerDataChecked() {
ServiceWorkerData* data = WorkerThreadDispatcher::GetServiceWorkerData();
DCHECK(data);
return data;
}
} // namespace
WorkerThreadDispatcher::WorkerThreadDispatcher() = default;
WorkerThreadDispatcher::~WorkerThreadDispatcher() = default;
WorkerThreadDispatcher* WorkerThreadDispatcher::Get() {
static base::NoDestructor<WorkerThreadDispatcher> dispatcher;
return dispatcher.get();
}
void WorkerThreadDispatcher::Init(content::RenderThread* render_thread) {
DCHECK(render_thread);
DCHECK_EQ(content::RenderThread::Get(), render_thread);
}
// static
NativeExtensionBindingsSystem* WorkerThreadDispatcher::GetBindingsSystem() {
return GetServiceWorkerDataChecked()->bindings_system();
}
// static
V8SchemaRegistry* WorkerThreadDispatcher::GetV8SchemaRegistry() {
return GetServiceWorkerDataChecked()->v8_schema_registry();
}
// static
ScriptContext* WorkerThreadDispatcher::GetScriptContext() {
return GetServiceWorkerDataChecked()->context();
}
// static
ServiceWorkerData* WorkerThreadDispatcher::GetServiceWorkerData() {
return service_worker_data;
}
// static
void WorkerThreadDispatcher::UpdateBindingsOnWorkerThread(
const std::optional<ExtensionId>& extension_id) {
DCHECK(worker_thread_util::IsWorkerThread());
DCHECK(!extension_id || !extension_id->empty())
<< "If provided, `extension_id` must be non-empty.";
ServiceWorkerData* data = WorkerThreadDispatcher::GetServiceWorkerData();
// Bail out if the worker was destroyed.
if (!data || !data->bindings_system()) {
return;
}
// NativeExtensionBindingsSystem::UpdateBindings() will update all bindings
// if the provided ExtensionId is empty.
data->bindings_system()->UpdateBindings(
extension_id.value_or(ExtensionId()), true /* permissions_changed */,
Dispatcher::GetWorkerScriptContextSet());
}
bool WorkerThreadDispatcher::UpdateBindingsForWorkers(
const ExtensionId& extension_id) {
return UpdateBindingsHelper(extension_id);
}
void WorkerThreadDispatcher::UpdateAllServiceWorkerBindings() {
UpdateBindingsHelper(std::nullopt);
}
void WorkerThreadDispatcher::AddWorkerData(
blink::WebServiceWorkerContextProxy* proxy,
int64_t service_worker_version_id,
const std::optional<base::UnguessableToken>& activation_sequence,
const blink::ServiceWorkerToken& service_worker_token,
ScriptContext* script_context,
std::unique_ptr<NativeExtensionBindingsSystem> bindings_system) {
if (!service_worker_data) {
service_worker_data = new ServiceWorkerData(
proxy, service_worker_version_id, std::move(activation_sequence),
service_worker_token, script_context, std::move(bindings_system));
}
int worker_thread_id = content::WorkerThread::GetCurrentId();
{
base::AutoLock lock(task_runner_map_lock_);
auto* task_runner = base::SingleThreadTaskRunner::GetCurrentDefault().get();
CHECK(task_runner);
task_runner_map_[worker_thread_id] = task_runner;
}
}
void WorkerThreadDispatcher::RemoveWorkerData(
int64_t service_worker_version_id) {
if (service_worker_data) {
DCHECK_EQ(service_worker_version_id,
service_worker_data->service_worker_version_id());
delete service_worker_data;
service_worker_data = nullptr;
}
int worker_thread_id = content::WorkerThread::GetCurrentId();
{
base::AutoLock lock(task_runner_map_lock_);
task_runner_map_.erase(worker_thread_id);
}
}
ScriptContextSetIterable* WorkerThreadDispatcher::GetScriptContextSet() {
return Dispatcher::GetWorkerScriptContextSet();
}
bool WorkerThreadDispatcher::UpdateBindingsHelper(
const std::optional<ExtensionId>& extension_id) {
bool success = true;
base::AutoLock lock(task_runner_map_lock_);
for (const auto& task_runner_info : task_runner_map_) {
const int worker_thread_id = task_runner_info.first;
base::TaskRunner* runner = task_runner_map_[worker_thread_id];
bool posted = runner->PostTask(
FROM_HERE,
base::BindOnce(&WorkerThreadDispatcher::UpdateBindingsOnWorkerThread,
extension_id));
success &= posted;
}
return success;
}
} // namespace extensions
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