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// Copyright (C) 2010 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 <inttypes.h>
#include <memory>
#include <string>
#include <vector>
#include <base/memory/ref_counted.h>
#include <brillo/errors/error.h>
#include <update_engine/proto_bindings/update_engine.pb.h>
#include "update_engine/common_service.h"
#include "update_engine/service_observer_interface.h"
#include "update_engine/update_attempter.h"
#include "dbus_bindings/org.chromium.UpdateEngineInterface.h"
namespace chromeos_update_engine {
class DBusUpdateEngineService
: public org::chromium::UpdateEngineInterfaceInterface {
explicit DBusUpdateEngineService(SystemState* system_state);
virtual ~DBusUpdateEngineService() = default;
// Implementation of org::chromium::UpdateEngineInterfaceInterface.
bool AttemptUpdate(brillo::ErrorPtr* error,
const std::string& in_app_version,
const std::string& in_omaha_url) override;
bool AttemptUpdateWithFlags(brillo::ErrorPtr* error,
const std::string& in_app_version,
const std::string& in_omaha_url,
int32_t in_flags_as_int) override;
bool AttemptInstall(brillo::ErrorPtr* error,
const std::string& in_omaha_url,
const std::vector<std::string>& dlc_ids) override;
bool AttemptRollback(brillo::ErrorPtr* error, bool in_powerwash) override;
// Checks if the system rollback is available by verifying if the secondary
// system partition is valid and bootable.
bool CanRollback(brillo::ErrorPtr* error, bool* out_can_rollback) override;
// Resets the status of the update_engine to idle, ignoring any applied
// update. This is used for development only.
bool ResetStatus(brillo::ErrorPtr* error) override;
// Sets the DLC as active or inactive. When set to active, the ping metadata
// for the DLC is updated accordingly. When set to inactive, the metadata
// for the DLC is deleted.
bool SetDlcActiveValue(brillo::ErrorPtr* error,
bool is_active,
const std::string& dlc_id) override;
// Similar to Above, but returns a protobuffer instead. In the future it will
// have more features and is easily extendable.
bool GetStatusAdvanced(brillo::ErrorPtr* error,
update_engine::StatusResult* out_status) override;
// Reboots the device if an update is applied and a reboot is required.
bool RebootIfNeeded(brillo::ErrorPtr* error) override;
// Changes the current channel of the device to the target channel. If the
// target channel is a less stable channel than the current channel, then the
// channel change happens immediately (at the next update check). If the
// target channel is a more stable channel, then if is_powerwash_allowed is
// set to true, then also the change happens immediately but with a powerwash
// if required. Otherwise, the change takes effect eventually (when the
// version on the target channel goes above the version number of what the
// device currently has).
bool SetChannel(brillo::ErrorPtr* error,
const std::string& in_target_channel,
bool in_is_powerwash_allowed) override;
// If get_current_channel is set to true, populates |channel| with the name of
// the channel that the device is currently on. Otherwise, it populates it
// with the name of the channel the device is supposed to be (in case of a
// pending channel change).
bool GetChannel(brillo::ErrorPtr* error,
bool in_get_current_channel,
std::string* out_channel) override;
bool SetCohortHint(brillo::ErrorPtr* error,
const std::string& in_cohort_hint) override;
bool GetCohortHint(brillo::ErrorPtr* error,
std::string* out_cohort_hint) override;
// Enables or disables the sharing and consuming updates over P2P feature
// according to the |enabled| argument passed.
bool SetP2PUpdatePermission(brillo::ErrorPtr* error,
bool in_enabled) override;
// Returns the current value for the P2P enabled setting. This involves both
// sharing and consuming updates over P2P.
bool GetP2PUpdatePermission(brillo::ErrorPtr* error,
bool* out_enabled) override;
// If there's no device policy installed, sets the update over cellular
// networks permission to the |allowed| value. Otherwise, this method returns
// with an error since this setting is overridden by the applied policy.
bool SetUpdateOverCellularPermission(brillo::ErrorPtr* error,
bool in_allowed) override;
// If there's no device policy installed, sets the update over cellular
// target. Otherwise, this method returns with an error.
bool SetUpdateOverCellularTarget(brillo::ErrorPtr* error,
const std::string& target_version,
int64_t target_size) override;
// Returns the current value of the update over cellular network setting,
// either forced by the device policy if the device is enrolled or the current
// user preference otherwise.
bool GetUpdateOverCellularPermission(brillo::ErrorPtr* error,
bool* out_allowed) override;
// Returns the duration since the last successful update, as the
// duration on the wallclock. Returns an error if the device has not
// updated.
bool GetDurationSinceUpdate(brillo::ErrorPtr* error,
int64_t* out_usec_wallclock) override;
// Returns the version string of OS that was used before the last reboot
// into an updated version. This is available only when rebooting into an
// update from previous version, otherwise an empty string is returned.
bool GetPrevVersion(brillo::ErrorPtr* error,
std::string* out_prev_version) override;
// Returns the name of kernel partition that can be rolled back into.
bool GetRollbackPartition(brillo::ErrorPtr* error,
std::string* out_rollback_partition_name) override;
// Returns the last UpdateAttempt error. If not updated yet, default success
// ErrorCode will be returned.
bool GetLastAttemptError(brillo::ErrorPtr* error,
int32_t* out_last_attempt_error) override;
std::unique_ptr<UpdateEngineService> common_;
// The UpdateEngineAdaptor class runs the UpdateEngineInterface in the fixed
// object path, without an ObjectManager notifying the interfaces, since it is
// all static and clients don't expect it to be implemented.
class UpdateEngineAdaptor : public org::chromium::UpdateEngineInterfaceAdaptor,
public ServiceObserverInterface {
explicit UpdateEngineAdaptor(SystemState* system_state);
~UpdateEngineAdaptor() = default;
// Register the DBus object with the update engine service asynchronously.
// Calls |copmletion_callback| when done passing a boolean indicating if the
// registration succeeded.
void RegisterAsync(const base::Callback<void(bool)>& completion_callback);
// Takes ownership of the well-known DBus name and returns whether it
// succeeded.
bool RequestOwnership();
// ServiceObserverInterface overrides.
void SendStatusUpdate(
const update_engine::UpdateEngineStatus& update_engine_status) override;
void SendPayloadApplicationComplete(ErrorCode error_code) override {}
scoped_refptr<dbus::Bus> bus_;
DBusUpdateEngineService dbus_service_;
brillo::dbus_utils::DBusObject dbus_object_;
} // namespace chromeos_update_engine