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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/power_monitor/power_monitor_device_source_linux.h"
#include <utility>
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/scoped_refptr.h"
#include "components/dbus/thread_linux/dbus_thread_linux.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
PowerMonitorDeviceSourceLinux::PowerMonitorDeviceSourceLinux()
: bus_(dbus_thread_linux::GetSharedSystemBus()) {
bus_->GetObjectProxy("org.freedesktop.login1",
dbus::ObjectPath("/org/freedesktop/login1"))
->ConnectToSignal(
"org.freedesktop.login1.Manager", "PrepareForSleep",
base::BindRepeating(&PowerMonitorDeviceSourceLinux::OnPrepareForSleep,
weak_ptr_factory_.GetWeakPtr()),
base::BindOnce(&PowerMonitorDeviceSourceLinux::OnSignalConnected,
weak_ptr_factory_.GetWeakPtr()));
}
PowerMonitorDeviceSourceLinux::~PowerMonitorDeviceSourceLinux() = default;
base::PowerStateObserver::BatteryPowerStatus
PowerMonitorDeviceSourceLinux::GetBatteryPowerStatus() const {
// TODO(crbug.com/40836663): Use org.freedesktop.UPower to check for
// OnBattery. One possibility is to connect to the DeviceService's
// BatteryMonitor.
return base::PowerStateObserver::BatteryPowerStatus::kUnknown;
}
void PowerMonitorDeviceSourceLinux::OnSignalConnected(
const std::string& interface_name,
const std::string& signal_name,
bool connected) {
if (connected) {
return;
}
DLOG(ERROR) << "Failed to connect to " << interface_name << " for signal "
<< signal_name;
}
void PowerMonitorDeviceSourceLinux::OnPrepareForSleep(dbus::Signal* signal) {
dbus::MessageReader reader(signal);
if (bool start = false; !reader.PopBool(&start) || reader.HasMoreData()) {
DLOG(ERROR) << "Received malformed PrepareForSleep signal from systemd";
} else if (start) {
ProcessPowerEvent(SUSPEND_EVENT);
} else {
ProcessPowerEvent(RESUME_EVENT);
}
}
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