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// Copyright (C) 2017, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.IO;
using System.Linq;
namespace Duplicati.Library.Utility.Power
{
public class LinuxPowerSupplyState : IPowerSupplyState
{
private readonly string sysfsPath = Path.Combine("/", "sys", "class", "power_supply");
public PowerSupply.Source GetSource()
{
if (this.IsAC())
{
return PowerSupply.Source.AC;
}
if (this.IsBattery())
{
return PowerSupply.Source.Battery;
}
return PowerSupply.Source.Unknown;
}
private bool IsAC()
{
// If any of the power supply devices of type "Mains" are online, then we are on
// AC power. If none of the power supply devices are of type "Mains", then we
// are also on AC power. See https://bugzilla.redhat.com/show_bug.cgi?id=644629.
bool reply = false;
bool haveMains = false;
try
{
foreach (string source in Directory.GetDirectories(this.sysfsPath))
{
if (!reply)
{
string sourceType = File.ReadLines(Path.Combine(source, "type")).FirstOrDefault();
if (String.Equals(sourceType, "Mains", StringComparison.Ordinal))
{
haveMains = true;
string isOnline = File.ReadLines(Path.Combine(source, "online")).FirstOrDefault();
reply = String.Equals(isOnline, "1", StringComparison.Ordinal);
}
}
}
}
catch
{
return false;
}
return reply |= !haveMains;
}
private bool IsBattery()
{
// If there is at least one power supply device of type "Mains", and all "Mains"
// devices are offline, then we are on battery power.
bool allOffline = true;
bool haveMains = false;
try
{
foreach (string source in Directory.GetDirectories(this.sysfsPath))
{
if (allOffline)
{
string sourceType = File.ReadLines(Path.Combine(source, "type")).FirstOrDefault();
if (String.Equals(sourceType, "Mains", StringComparison.Ordinal))
{
haveMains = true;
string isOnline = File.ReadLines(Path.Combine(source, "online")).FirstOrDefault();
allOffline &= String.Equals(isOnline, "0", StringComparison.Ordinal);
}
}
}
}
catch
{
return false;
}
return haveMains && allOffline;
}
}
}
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