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Lidarr/src/NzbDrone.Common/EnvironmentInfo/OsInfo.cs

147 lines
3.7 KiB

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using NLog;
namespace NzbDrone.Common.EnvironmentInfo
{
public class OsInfo : IOsInfo
{
public static Os Os { get; }
public static bool IsNotWindows => !IsWindows;
public static bool IsLinux => Os == Os.Linux || Os == Os.LinuxMusl || Os == Os.Bsd;
public static bool IsOsx => Os == Os.Osx;
public static bool IsWindows => Os == Os.Windows;
// this needs to not be static so we can mock it
public bool IsDocker { get; }
public string Version { get; }
public string Name { get; }
public string FullName { get; }
static OsInfo()
{
var platform = Environment.OSVersion.Platform;
switch (platform)
{
case PlatformID.Win32NT:
{
Os = Os.Windows;
break;
}
case PlatformID.MacOSX:
case PlatformID.Unix:
{
Os = GetPosixFlavour();
break;
}
}
}
public OsInfo(IEnumerable<IOsVersionAdapter> versionAdapters, Logger logger)
{
OsVersionModel osInfo = null;
foreach (var osVersionAdapter in versionAdapters.Where(c => c.Enabled))
{
try
{
osInfo = osVersionAdapter.Read();
}
catch (Exception e)
{
logger.Error(e, "Couldn't get OS Version info");
}
if (osInfo != null)
{
break;
}
}
if (osInfo != null)
{
Name = osInfo.Name;
Version = osInfo.Version;
FullName = osInfo.FullName;
}
else
{
Name = Os.ToString();
FullName = Name;
}
if (IsLinux &&
(File.Exists("/.dockerenv") ||
(File.Exists("/proc/1/cgroup") && File.ReadAllText("/proc/1/cgroup").Contains("/docker/"))))
{
IsDocker = true;
}
}
private static Os GetPosixFlavour()
{
var output = RunAndCapture("uname", "-s");
if (output.StartsWith("Darwin"))
{
return Os.Osx;
}
else if (output.Contains("BSD"))
{
return Os.Bsd;
}
else
{
#if ISMUSL
return Os.LinuxMusl;
#else
return Os.Linux;
#endif
}
}
private static string RunAndCapture(string filename, string args)
{
var p = new Process();
p.StartInfo.FileName = filename;
p.StartInfo.Arguments = args;
p.StartInfo.UseShellExecute = false;
p.StartInfo.CreateNoWindow = true;
p.StartInfo.RedirectStandardOutput = true;
p.Start();
// To avoid deadlocks, always read the output stream first and then wait.
var output = p.StandardOutput.ReadToEnd();
p.WaitForExit(1000);
return output;
}
}
public interface IOsInfo
{
string Version { get; }
string Name { get; }
string FullName { get; }
bool IsDocker { get; }
}
public enum Os
{
Windows,
Linux,
Osx,
LinuxMusl,
Bsd
}
}