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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 "chrome/browser/ash/dbus/component_updater_service_provider.h"
#include <utility>
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "chrome/browser/component_updater/cros_component_installer_chromeos.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace ash {
namespace {
const char kErrorInvalidArgs[] = "org.freedesktop.DBus.Error.InvalidArgs";
const char kErrorInternalError[] = "org.freedesktop.DBus.Error.InternalError";
std::string ErrorToString(component_updater::ComponentManagerAsh::Error error) {
switch (error) {
case component_updater::ComponentManagerAsh::Error::NONE:
return "NONE";
case component_updater::ComponentManagerAsh::Error::UNKNOWN_COMPONENT:
return "UNKNOWN_COMPONENT";
case component_updater::ComponentManagerAsh::Error::INSTALL_FAILURE:
return "INSTALL_FAILURE";
case component_updater::ComponentManagerAsh::Error::MOUNT_FAILURE:
return "MOUNT_FAILURE";
case component_updater::ComponentManagerAsh::Error::
COMPATIBILITY_CHECK_FAILED:
return "COMPATIBILITY_CHECK_FAILED";
case component_updater::ComponentManagerAsh::Error::NOT_FOUND:
return "NOT_FOUND";
case component_updater::ComponentManagerAsh::Error::UPDATE_IN_PROGRESS:
return "UPDATE_IN_PROGRESS";
}
return "Unknown error code";
}
} // namespace
ComponentUpdaterServiceProvider::ComponentUpdaterServiceProvider(
component_updater::ComponentManagerAsh* cros_component_manager) {
DCHECK(cros_component_manager);
cros_component_manager_ = cros_component_manager;
cros_component_manager_->SetDelegate(this);
}
ComponentUpdaterServiceProvider::~ComponentUpdaterServiceProvider() {
cros_component_manager_->SetDelegate(nullptr);
}
void ComponentUpdaterServiceProvider::Start(
scoped_refptr<dbus::ExportedObject> exported_object) {
exported_object->ExportMethod(
chromeos::kComponentUpdaterServiceInterface,
chromeos::kComponentUpdaterServiceLoadComponentMethod,
base::BindRepeating(&ComponentUpdaterServiceProvider::LoadComponent,
weak_ptr_factory_.GetWeakPtr()),
base::BindOnce(&ComponentUpdaterServiceProvider::OnExported,
weak_ptr_factory_.GetWeakPtr()));
exported_object->ExportMethod(
chromeos::kComponentUpdaterServiceInterface,
chromeos::kComponentUpdaterServiceUnloadComponentMethod,
base::BindRepeating(&ComponentUpdaterServiceProvider::UnloadComponent,
weak_ptr_factory_.GetWeakPtr()),
base::BindOnce(&ComponentUpdaterServiceProvider::OnExported,
weak_ptr_factory_.GetWeakPtr()));
exported_object_ = exported_object;
}
void ComponentUpdaterServiceProvider::EmitInstalledSignal(
const std::string& component) {
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
&ComponentUpdaterServiceProvider::EmitInstalledSignalInternal,
weak_ptr_factory_.GetWeakPtr(), component));
}
void ComponentUpdaterServiceProvider::OnExported(
const std::string& interface_name,
const std::string& method_name,
bool success) {
if (!success) {
LOG(ERROR) << "Failed to export " << interface_name << "." << method_name;
}
}
void ComponentUpdaterServiceProvider::LoadComponent(
dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender) {
dbus::MessageReader reader(method_call);
std::string component_name;
// |mount| is an optional parameter, and by default is true.
bool mount = true;
if (reader.PopString(&component_name)) {
// dbus::MessageReader::PopBool sets its out-param to false on failure.
// Resets |mount| to its default value on failure.
if (!reader.PopBool(&mount))
mount = true;
cros_component_manager_->Load(
component_name,
mount ? component_updater::ComponentManagerAsh::MountPolicy::kMount
: component_updater::ComponentManagerAsh::MountPolicy::kDontMount,
component_updater::ComponentManagerAsh::UpdatePolicy::kDontForce,
base::BindOnce(&ComponentUpdaterServiceProvider::OnLoadComponent,
weak_ptr_factory_.GetWeakPtr(), method_call,
std::move(response_sender)));
} else {
std::unique_ptr<dbus::ErrorResponse> error_response =
dbus::ErrorResponse::FromMethodCall(
method_call, kErrorInvalidArgs,
"Need a string and a boolean parameter.");
std::move(response_sender).Run(std::move(error_response));
}
}
void ComponentUpdaterServiceProvider::OnLoadComponent(
dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender,
component_updater::ComponentManagerAsh::Error error,
const base::FilePath& result) {
if (error != component_updater::ComponentManagerAsh::Error::NONE) {
LOG(ERROR) << "Component updater Load API error: " << ErrorToString(error);
}
std::unique_ptr<dbus::Response> response =
dbus::Response::FromMethodCall(method_call);
dbus::MessageWriter writer(response.get());
writer.AppendString(result.value());
std::move(response_sender).Run(std::move(response));
}
void ComponentUpdaterServiceProvider::UnloadComponent(
dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender) {
dbus::MessageReader reader(method_call);
std::string component_name;
if (reader.PopString(&component_name)) {
if (cros_component_manager_->Unload(component_name)) {
std::move(response_sender)
.Run(dbus::Response::FromMethodCall(method_call));
} else {
std::move(response_sender)
.Run(dbus::ErrorResponse::FromMethodCall(
method_call, kErrorInternalError, "Failed to unload component"));
}
} else {
std::move(response_sender)
.Run(dbus::ErrorResponse::FromMethodCall(
method_call, kErrorInvalidArgs,
"Missing component name string argument."));
}
}
void ComponentUpdaterServiceProvider::EmitInstalledSignalInternal(
const std::string& component) {
DCHECK(exported_object_);
dbus::Signal signal(
chromeos::kComponentUpdaterServiceInterface,
chromeos::kComponentUpdaterServiceComponentInstalledSignal);
dbus::MessageWriter writer(&signal);
writer.AppendString(component);
exported_object_->SendSignal(&signal);
}
} // namespace ash
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