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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 "chromeos/ash/components/dbus/image_loader/image_loader_client.h"
#include <optional>
#include <utility>
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "chromeos/ash/components/dbus/image_loader/fake_image_loader_client.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace ash {
namespace {
ImageLoaderClient* g_instance = nullptr;
class ImageLoaderClientImpl : public ImageLoaderClient {
public:
ImageLoaderClientImpl() = default;
ImageLoaderClientImpl(const ImageLoaderClientImpl&) = delete;
ImageLoaderClientImpl& operator=(const ImageLoaderClientImpl&) = delete;
~ImageLoaderClientImpl() override = default;
void RegisterComponent(const std::string& name,
const std::string& version,
const std::string& component_folder_abs_path,
chromeos::DBusMethodCallback<bool> callback) override {
dbus::MethodCall method_call(imageloader::kImageLoaderServiceInterface,
imageloader::kRegisterComponent);
dbus::MessageWriter writer(&method_call);
writer.AppendString(name);
writer.AppendString(version);
writer.AppendString(component_folder_abs_path);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&ImageLoaderClientImpl::OnBoolMethod,
std::move(callback)));
}
void LoadComponent(
const std::string& name,
chromeos::DBusMethodCallback<std::string> callback) override {
dbus::MethodCall method_call(imageloader::kImageLoaderServiceInterface,
imageloader::kLoadComponent);
dbus::MessageWriter writer(&method_call);
writer.AppendString(name);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&ImageLoaderClientImpl::OnStringMethod,
std::move(callback)));
}
void LoadComponentAtPath(
const std::string& name,
const base::FilePath& path,
chromeos::DBusMethodCallback<base::FilePath> callback) override {
dbus::MethodCall method_call(imageloader::kImageLoaderServiceInterface,
imageloader::kLoadComponentAtPath);
dbus::MessageWriter writer(&method_call);
writer.AppendString(name);
writer.AppendString(path.value());
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&ImageLoaderClientImpl::OnFilePathMethod,
std::move(callback)));
}
void RemoveComponent(const std::string& name,
chromeos::DBusMethodCallback<bool> callback) override {
dbus::MethodCall method_call(imageloader::kImageLoaderServiceInterface,
imageloader::kRemoveComponent);
dbus::MessageWriter writer(&method_call);
writer.AppendString(name);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&ImageLoaderClientImpl::OnBoolMethod,
std::move(callback)));
}
void RequestComponentVersion(
const std::string& name,
chromeos::DBusMethodCallback<std::string> callback) override {
dbus::MethodCall method_call(imageloader::kImageLoaderServiceInterface,
imageloader::kGetComponentVersion);
dbus::MessageWriter writer(&method_call);
writer.AppendString(name);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&ImageLoaderClientImpl::OnStringMethod,
std::move(callback)));
}
void UnmountComponent(const std::string& name,
chromeos::DBusMethodCallback<bool> callback) override {
dbus::MethodCall method_call(imageloader::kImageLoaderServiceInterface,
imageloader::kUnmountComponent);
dbus::MessageWriter writer(&method_call);
writer.AppendString(name);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&ImageLoaderClientImpl::OnBoolMethod,
std::move(callback)));
}
// chromeos::DBusClient override.
void Init(dbus::Bus* bus) override {
proxy_ = bus->GetObjectProxy(
imageloader::kImageLoaderServiceName,
dbus::ObjectPath(imageloader::kImageLoaderServicePath));
}
private:
static void OnBoolMethod(chromeos::DBusMethodCallback<bool> callback,
dbus::Response* response) {
if (!response) {
std::move(callback).Run(std::nullopt);
return;
}
dbus::MessageReader reader(response);
bool result = false;
if (!reader.PopBool(&result)) {
LOG(ERROR) << "Invalid response: " << response->ToString();
std::move(callback).Run(std::nullopt);
return;
}
std::move(callback).Run(result);
}
static void OnStringMethod(chromeos::DBusMethodCallback<std::string> callback,
dbus::Response* response) {
if (!response) {
std::move(callback).Run(std::nullopt);
return;
}
dbus::MessageReader reader(response);
std::string result;
if (!reader.PopString(&result)) {
std::move(callback).Run(std::nullopt);
LOG(ERROR) << "Invalid response: " << response->ToString();
return;
}
std::move(callback).Run(std::move(result));
}
static void OnFilePathMethod(
chromeos::DBusMethodCallback<base::FilePath> callback,
dbus::Response* response) {
if (!response) {
std::move(callback).Run(std::nullopt);
return;
}
dbus::MessageReader reader(response);
std::string result;
if (!reader.PopString(&result)) {
std::move(callback).Run(std::nullopt);
LOG(ERROR) << "Invalid response: " << response->ToString();
return;
}
std::move(callback).Run(base::FilePath(std::move(result)));
}
raw_ptr<dbus::ObjectProxy> proxy_ = nullptr;
};
} // namespace
// static
ImageLoaderClient* ImageLoaderClient::Get() {
return g_instance;
}
// static
void ImageLoaderClient::Initialize(dbus::Bus* bus) {
CHECK(bus);
(new ImageLoaderClientImpl())->Init(bus);
}
// static
void ImageLoaderClient::InitializeFake() {
(new FakeImageLoaderClient())->Init(nullptr);
}
// static
void ImageLoaderClient::Shutdown() {
CHECK(g_instance);
delete g_instance;
}
ImageLoaderClient::ImageLoaderClient() {
CHECK(!g_instance);
g_instance = this;
}
ImageLoaderClient::~ImageLoaderClient() {
CHECK_EQ(g_instance, this);
g_instance = nullptr;
}
} // namespace ash
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