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// Licensed under the MIT License.
#if UNIX
using System;
using System.Diagnostics;
using System.IO;
using System.Management.Automation;
using System.Management.Automation.Internal;
using System.Runtime.InteropServices;
#nullable enable
namespace Microsoft.PowerShell.Commands
{
#region Restart-Computer
/// <summary>
/// Cmdlet to restart computer.
/// </summary>
[Cmdlet(VerbsLifecycle.Restart, "Computer", SupportsShouldProcess = true,
HelpUri = "https://go.microsoft.com/fwlink/?LinkID=2097060", RemotingCapability = RemotingCapability.SupportedByCommand)]
public sealed class RestartComputerCommand : CommandLineCmdletBase
{
// TODO: Support remote computers?
#region "Overrides"
/// <summary>
/// BeginProcessing.
/// </summary>
protected override void BeginProcessing()
{
if (InternalTestHooks.TestStopComputer)
{
var retVal = InternalTestHooks.TestStopComputerResults;
if (retVal != 0)
{
string errMsg = StringUtil.Format("Command returned 0x{0:X}", retVal);
ErrorRecord error = new ErrorRecord(
new InvalidOperationException(errMsg), "CommandFailed", ErrorCategory.OperationStopped, "localhost");
WriteError(error);
}
return;
}
RunShutdown("-r now");
}
#endregion "Overrides"
}
#endregion Restart-Computer
#region Stop-Computer
/// <summary>
/// Cmdlet to stop computer.
/// </summary>
[Cmdlet(VerbsLifecycle.Stop, "Computer", SupportsShouldProcess = true,
HelpUri = "https://go.microsoft.com/fwlink/?LinkID=2097151", RemotingCapability = RemotingCapability.SupportedByCommand)]
public sealed class StopComputerCommand : CommandLineCmdletBase
{
// TODO: Support remote computers?
#region "Overrides"
/// <summary>
/// BeginProcessing.
/// </summary>
protected override void BeginProcessing()
{
var args = "-P now";
if (Platform.IsMacOS)
{
args = "now";
}
if (InternalTestHooks.TestStopComputer)
{
var retVal = InternalTestHooks.TestStopComputerResults;
if (retVal != 0)
{
string errMsg = StringUtil.Format("Command returned 0x{0:X}", retVal);
ErrorRecord error = new ErrorRecord(
new InvalidOperationException(errMsg), "CommandFailed", ErrorCategory.OperationStopped, "localhost");
WriteError(error);
}
return;
}
RunShutdown(args);
}
#endregion "Overrides"
}
/// <summary>
/// A base class for cmdlets that can run shell commands.
/// </summary>
public class CommandLineCmdletBase : PSCmdlet, IDisposable
{
#region Private Members
private Process? _process = null;
#endregion
#region "IDisposable Members"
/// <summary>
/// Releases all resources used by the <see cref="CommandLineCmdletBase"/>.
/// </summary>
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
/// <summary>
/// Releases the unmanaged resources used by the <see cref="CommandLineCmdletBase"/>
/// and optionally releases the managed resources.
/// </summary>
/// <param name="disposing">
/// <see langword="true"/> to release both managed and unmanaged resources;
/// <see langword="false"/> to release only unmanaged resources.
/// </param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
_process?.Dispose();
}
}
#endregion "IDisposable Members"
#region "Overrides"
/// <summary>
/// To implement ^C.
/// </summary>
protected override void StopProcessing()
{
if (_process == null) {
return;
}
try {
if (!_process.HasExited) {
_process.Kill();
}
WriteObject(_process.ExitCode);
}
catch (InvalidOperationException) {}
catch (NotSupportedException) {}
}
#endregion "Overrides"
#region "Internals"
private static string? shutdownPath;
/// <summary>
/// Run shutdown command.
/// </summary>
protected void RunShutdown(string args)
{
if (shutdownPath is null)
{
CommandInfo cmdinfo = CommandDiscovery.LookupCommandInfo(
"shutdown", CommandTypes.Application,
SearchResolutionOptions.None, CommandOrigin.Internal, this.Context);
if (cmdinfo is not null)
{
shutdownPath = cmdinfo.Definition;
}
else
{
ErrorRecord error = new ErrorRecord(
new InvalidOperationException(ComputerResources.ShutdownCommandNotFound), "CommandNotFound", ErrorCategory.ObjectNotFound, targetObject: null);
ThrowTerminatingError(error);
}
}
_process = new Process()
{
StartInfo = new ProcessStartInfo
{
FileName = shutdownPath,
Arguments = string.Empty,
RedirectStandardOutput = false,
RedirectStandardError = true,
UseShellExecute = false,
CreateNoWindow = true,
}
};
_process.Start();
_process.WaitForExit();
if (_process.ExitCode != 0)
{
string stderr = _process.StandardError.ReadToEnd();
ErrorRecord error = new ErrorRecord(
new InvalidOperationException(stderr), "CommandFailed", ErrorCategory.OperationStopped, null);
ThrowTerminatingError(error);
}
}
#endregion
}
#endregion
}
#endif
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