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// Copyright (C) 2013 The Android Open Source Project
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
#include "update_engine/system_state.h"
#include <memory>
#include <set>
#include <metrics/metrics_library.h>
#include <policy/device_policy.h>
#include <libcros/dbus-proxies.h>
#include "update_engine/certificate_checker.h"
#include "update_engine/common/boot_control_interface.h"
#include "update_engine/common/clock.h"
#include "update_engine/common/hardware_interface.h"
#include "update_engine/common/prefs.h"
#include "update_engine/connection_manager_interface.h"
#include "update_engine/daemon_state_interface.h"
#include "update_engine/p2p_manager.h"
#include "update_engine/payload_state.h"
#include "update_engine/power_manager_interface.h"
#include "update_engine/update_attempter.h"
#include "update_engine/update_manager/update_manager.h"
namespace chromeos_update_engine {
// A real implementation of the SystemStateInterface which is
// used by the actual product code.
class RealSystemState : public SystemState, public DaemonStateInterface {
// Constructs all system objects that do not require separate initialization;
// see Initialize() below for the remaining ones.
RealSystemState() = default;
~RealSystemState() override;
// Initializes and sets systems objects that require an initialization
// separately from construction. Returns |true| on success.
bool Initialize();
// DaemonStateInterface overrides.
// Start the periodic update attempts. Must be called at the beginning of the
// program to start the periodic update check process.
bool StartUpdater() override;
void AddObserver(ServiceObserverInterface* observer) override;
void RemoveObserver(ServiceObserverInterface* observer) override;
const std::set<ServiceObserverInterface*>& service_observers() override {
return update_attempter_->service_observers();
// SystemState overrides.
inline void set_device_policy(
const policy::DevicePolicy* device_policy) override {
device_policy_ = device_policy;
inline const policy::DevicePolicy* device_policy() override {
return device_policy_;
inline BootControlInterface* boot_control() override {
return boot_control_.get();
inline ClockInterface* clock() override { return &clock_; }
inline ConnectionManagerInterface* connection_manager() override {
return connection_manager_.get();
inline HardwareInterface* hardware() override { return hardware_.get(); }
inline MetricsLibraryInterface* metrics_lib() override {
return &metrics_lib_;
inline PrefsInterface* prefs() override { return prefs_.get(); }
inline PrefsInterface* powerwash_safe_prefs() override {
return powerwash_safe_prefs_.get();
inline PayloadStateInterface* payload_state() override {
return &payload_state_;
inline UpdateAttempter* update_attempter() override {
return update_attempter_.get();
inline OmahaRequestParams* request_params() override {
return &request_params_;
inline P2PManager* p2p_manager() override { return p2p_manager_.get(); }
inline chromeos_update_manager::UpdateManager* update_manager() override {
return update_manager_.get();
inline PowerManagerInterface* power_manager() override {
return power_manager_.get();
inline bool system_rebooted() override { return system_rebooted_; }
// Real DBus proxies using the DBus connection.
std::unique_ptr<org::chromium::LibCrosServiceInterfaceProxy> libcros_proxy_;
// Interface for the power manager.
std::unique_ptr<PowerManagerInterface> power_manager_;
// Interface for the clock.
std::unique_ptr<BootControlInterface> boot_control_;
// Interface for the clock.
Clock clock_;
// The latest device policy object from the policy provider.
const policy::DevicePolicy* device_policy_{nullptr};
// The connection manager object that makes download decisions depending on
// the current type of connection.
std::unique_ptr<ConnectionManagerInterface> connection_manager_;
// Interface for the hardware functions.
std::unique_ptr<HardwareInterface> hardware_;
// The Metrics Library interface for reporting UMA stats.
MetricsLibrary metrics_lib_;
// Interface for persisted store.
std::unique_ptr<PrefsInterface> prefs_;
// Interface for persisted store that persists across powerwashes.
std::unique_ptr<PrefsInterface> powerwash_safe_prefs_;
// All state pertaining to payload state such as response, URL, backoff
// states.
PayloadState payload_state_;
// OpenSSLWrapper and CertificateChecker used for checking SSL certificates.
OpenSSLWrapper openssl_wrapper_;
std::unique_ptr<CertificateChecker> certificate_checker_;
// Pointer to the update attempter object.
std::unique_ptr<UpdateAttempter> update_attempter_;
// Common parameters for all Omaha requests.
OmahaRequestParams request_params_{this};
std::unique_ptr<P2PManager> p2p_manager_;
std::unique_ptr<chromeos_update_manager::UpdateManager> update_manager_;
policy::PolicyProvider policy_provider_;
// If true, this is the first instance of the update engine since the system
// rebooted. Important for tracking whether you are running instance of the
// update engine on first boot or due to a crash/restart.
bool system_rebooted_{false};
} // namespace chromeos_update_engine