mirror of https://github.com/winsw/winsw
804 lines
29 KiB
C#
804 lines
29 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Management;
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using System.Runtime.InteropServices;
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using System.ServiceProcess;
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using System.Text;
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using System.Threading;
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using Microsoft.Win32;
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using WMI;
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using ServiceType = WMI.ServiceType;
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using System.Reflection;
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namespace winsw
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{
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public class WrapperService : ServiceBase, EventLogger
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{
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private SERVICE_STATUS _wrapperServiceStatus;
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private readonly Process _process = new Process();
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private readonly ServiceDescriptor _descriptor;
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private Dictionary<string, string> _envs;
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/// <summary>
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/// Indicates to the watch dog thread that we are going to terminate the process,
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/// so don't try to kill us when the child exits.
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/// </summary>
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private bool _orderlyShutdown;
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private bool _systemShuttingdown;
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/// <summary>
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/// Version of Windows service wrapper
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/// </summary>
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/// <remarks>
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/// The version will be taken from <see cref="AssemblyInfo"/>
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/// </remarks>
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public static Version Version
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{
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get { return Assembly.GetExecutingAssembly().GetName().Version; }
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}
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public WrapperService(ServiceDescriptor descriptor)
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{
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_descriptor = descriptor;
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ServiceName = _descriptor.Id;
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CanShutdown = true;
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CanStop = true;
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CanPauseAndContinue = false;
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AutoLog = true;
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_systemShuttingdown = false;
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}
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public WrapperService() : this (new ServiceDescriptor())
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{
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}
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/// <summary>
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/// Process the file copy instructions, so that we can replace files that are always in use while
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/// the service runs.
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/// </summary>
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private void HandleFileCopies()
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{
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var file = _descriptor.BasePath + ".copies";
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if (!File.Exists(file))
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return; // nothing to handle
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try
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{
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using (var tr = new StreamReader(file,Encoding.UTF8))
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{
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string line;
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while ((line = tr.ReadLine()) != null)
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{
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LogEvent("Handling copy: " + line);
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string[] tokens = line.Split('>');
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if (tokens.Length > 2)
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{
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LogEvent("Too many delimiters in " + line);
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continue;
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}
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CopyFile(tokens[0], tokens[1]);
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}
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}
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}
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finally
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{
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File.Delete(file);
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}
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}
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/// <summary>
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/// File replacement.
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/// </summary>
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private void CopyFile(string sourceFileName, string destFileName)
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{
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try
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{
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File.Delete(destFileName);
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File.Move(sourceFileName, destFileName);
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}
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catch (IOException e)
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{
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LogEvent("Failed to copy :" + sourceFileName + " to " + destFileName + " because " + e.Message);
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}
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}
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/// <summary>
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/// Starts a thread that protects the execution with a try/catch block.
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/// It appears that in .NET, unhandled exception in any thread causes the app to terminate
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/// http://msdn.microsoft.com/en-us/library/ms228965.aspx
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/// </summary>
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private void StartThread(ThreadStart main)
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{
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new Thread(delegate() {
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try
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{
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main();
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}
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catch (Exception e)
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{
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WriteEvent("Thread failed unexpectedly",e);
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}
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}).Start();
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}
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/// <summary>
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/// Handle the creation of the logfiles based on the optional logmode setting.
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/// </summary>
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private void HandleLogfiles()
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{
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string logDirectory = _descriptor.LogDirectory;
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if (!Directory.Exists(logDirectory))
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{
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Directory.CreateDirectory(logDirectory);
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}
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LogHandler logAppender = _descriptor.LogHandler;
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logAppender.EventLogger = this;
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logAppender.log(_process.StandardOutput.BaseStream, _process.StandardError.BaseStream);
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}
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public void LogEvent(String message)
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{
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if (_systemShuttingdown)
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{
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/* NOP - cannot call EventLog because of shutdown. */
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}
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else
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{
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try
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{
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EventLog.WriteEntry(message);
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}
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catch (Exception e)
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{
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WriteEvent("Failed to log event in Windows Event Log: " + message + "; Reason: ", e);
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}
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}
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}
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public void LogEvent(String message, EventLogEntryType type)
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{
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if (_systemShuttingdown)
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{
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/* NOP - cannot call EventLog because of shutdown. */
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}
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else
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{
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try
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{
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EventLog.WriteEntry(message, type);
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}
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catch (Exception e)
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{
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WriteEvent("Failed to log event in Windows Event Log. Reason: ", e);
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}
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}
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}
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private void WriteEvent(Exception exception)
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{
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WriteEvent(exception.Message + "\nStacktrace:" + exception.StackTrace);
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}
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private void WriteEvent(String message, Exception exception)
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{
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WriteEvent(message + "\nMessage:" + exception.Message + "\nStacktrace:" + exception.StackTrace);
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}
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private void WriteEvent(String message)
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{
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string logfilename = Path.Combine(_descriptor.LogDirectory, _descriptor.BaseName + ".wrapper.log");
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StreamWriter log = new StreamWriter(logfilename, true);
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log.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + " - " + message);
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log.Flush();
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log.Close();
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}
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protected override void OnStart(string[] _)
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{
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_envs = _descriptor.EnvironmentVariables;
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foreach (string key in _envs.Keys)
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{
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LogEvent("envar " + key + '=' + _envs[key]);
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}
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HandleFileCopies();
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// handle downloads
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foreach (Download d in _descriptor.Downloads)
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{
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LogEvent("Downloading: " + d.From+ " to "+d.To);
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try
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{
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d.Perform();
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}
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catch (Exception e)
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{
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LogEvent("Failed to download " + d.From + " to " + d.To + "\n" + e.Message);
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WriteEvent("Failed to download " + d.From +" to "+d.To, e);
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// but just keep going
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}
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}
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string startarguments = _descriptor.Startarguments;
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if (startarguments == null)
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{
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startarguments = _descriptor.Arguments;
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}
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else
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{
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startarguments += " " + _descriptor.Arguments;
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}
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LogEvent("Starting " + _descriptor.Executable + ' ' + startarguments);
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WriteEvent("Starting " + _descriptor.Executable + ' ' + startarguments);
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StartProcess(_process, startarguments, _descriptor.Executable);
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// send stdout and stderr to its respective output file.
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HandleLogfiles();
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_process.StandardInput.Close(); // nothing for you to read!
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}
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protected override void OnShutdown()
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{
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// WriteEvent("OnShutdown");
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try
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{
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_systemShuttingdown = true;
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StopIt();
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}
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catch (Exception ex)
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{
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WriteEvent("Shutdown exception", ex);
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}
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}
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protected override void OnStop()
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{
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// WriteEvent("OnStop");
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try
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{
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StopIt();
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}
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catch (Exception ex)
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{
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WriteEvent("Stop exception", ex);
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}
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}
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/// <summary>
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/// Called when we are told by Windows SCM to exit.
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/// </summary>
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private void StopIt()
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{
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string stoparguments = _descriptor.Stoparguments;
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LogEvent("Stopping " + _descriptor.Id);
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WriteEvent("Stopping " + _descriptor.Id);
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_orderlyShutdown = true;
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if (stoparguments == null)
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{
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try
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{
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WriteEvent("ProcessKill " + _process.Id);
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StopProcessAndChildren(_process.Id);
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}
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catch (InvalidOperationException)
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{
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// already terminated
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}
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}
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else
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{
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SignalShutdownPending();
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stoparguments += " " + _descriptor.Arguments;
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Process stopProcess = new Process();
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String executable = _descriptor.StopExecutable;
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if (executable == null)
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{
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executable = _descriptor.Executable;
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}
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StartProcess(stopProcess, stoparguments, executable);
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WriteEvent("WaitForProcessToExit "+_process.Id+"+"+stopProcess.Id);
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WaitForProcessToExit(_process);
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WaitForProcessToExit(stopProcess);
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SignalShutdownComplete();
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}
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if (_systemShuttingdown && _descriptor.BeepOnShutdown)
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{
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Console.Beep();
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}
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WriteEvent("Finished " + _descriptor.Id);
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}
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private void StopProcessAndChildren(int pid)
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{
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var childPids = GetChildPids(pid);
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if (_descriptor.StopParentProcessFirst)
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{
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StopProcess(pid);
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foreach (var childPid in childPids)
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{
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StopProcessAndChildren(childPid);
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}
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}
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else
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{
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foreach (var childPid in childPids)
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{
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StopProcessAndChildren(childPid);
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}
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StopProcess(pid);
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}
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}
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private List<int> GetChildPids(int pid)
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{
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var searcher = new ManagementObjectSearcher("Select * From Win32_Process Where ParentProcessID=" + pid);
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var childPids = new List<int>();
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foreach (var mo in searcher.Get())
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{
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var childProcessId = mo["ProcessID"];
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WriteEvent("Found child process: " + childProcessId + " Name: " + mo["Name"]);
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childPids.Add(Convert.ToInt32(childProcessId));
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}
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return childPids;
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}
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private void StopProcess(int pid)
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{
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WriteEvent("Stopping process " + pid);
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Process proc;
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try
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{
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proc = Process.GetProcessById(pid);
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}
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catch (ArgumentException)
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{
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WriteEvent("Process " + pid + " is already stopped");
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return;
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}
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WriteEvent("Send SIGINT " + pid);
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bool successful = SigIntHelper.SendSIGINTToProcess(proc, _descriptor.StopTimeout);
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if (successful)
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{
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WriteEvent("SIGINT to" + pid + " successful");
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}
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else
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{
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try
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{
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WriteEvent("SIGINT to " + pid + " failed - Killing as fallback");
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proc.Kill();
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}
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catch (ArgumentException)
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{
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// Process already exited.
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}
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}
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}
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private void WaitForProcessToExit(Process processoWait)
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{
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SignalShutdownPending();
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try
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{
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// WriteEvent("WaitForProcessToExit [start]");
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while (!processoWait.WaitForExit(_descriptor.SleepTime.Milliseconds))
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{
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SignalShutdownPending();
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// WriteEvent("WaitForProcessToExit [repeat]");
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}
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}
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catch (InvalidOperationException)
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{
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// already terminated
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}
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// WriteEvent("WaitForProcessToExit [finished]");
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}
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private void SignalShutdownPending()
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{
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IntPtr handle = ServiceHandle;
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_wrapperServiceStatus.checkPoint++;
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_wrapperServiceStatus.waitHint = _descriptor.WaitHint.Milliseconds;
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// WriteEvent("SignalShutdownPending " + wrapperServiceStatus.checkPoint + ":" + wrapperServiceStatus.waitHint);
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_wrapperServiceStatus.currentState = (int)State.SERVICE_STOP_PENDING;
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Advapi32.SetServiceStatus(handle, ref _wrapperServiceStatus);
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}
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private void SignalShutdownComplete()
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{
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IntPtr handle = ServiceHandle;
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_wrapperServiceStatus.checkPoint++;
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// WriteEvent("SignalShutdownComplete " + wrapperServiceStatus.checkPoint + ":" + wrapperServiceStatus.waitHint);
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_wrapperServiceStatus.currentState = (int)State.SERVICE_STOPPED;
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Advapi32.SetServiceStatus(handle, ref _wrapperServiceStatus);
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}
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private void StartProcess(Process processToStart, string arguments, String executable)
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{
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var ps = processToStart.StartInfo;
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ps.FileName = executable;
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ps.Arguments = arguments;
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ps.WorkingDirectory = _descriptor.WorkingDirectory;
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ps.CreateNoWindow = false;
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ps.UseShellExecute = false;
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ps.RedirectStandardInput = true; // this creates a pipe for stdin to the new process, instead of having it inherit our stdin.
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ps.RedirectStandardOutput = true;
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ps.RedirectStandardError = true;
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foreach (string key in _envs.Keys)
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Environment.SetEnvironmentVariable(key, _envs[key]);
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// ps.EnvironmentVariables[key] = envs[key]; // bugged (lower cases all variable names due to StringDictionary being used, see http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=326163)
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processToStart.Start();
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WriteEvent("Started " + processToStart.Id);
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var priority = _descriptor.Priority;
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if (priority != ProcessPriorityClass.Normal)
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processToStart.PriorityClass = priority;
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// monitor the completion of the process
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StartThread(delegate
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{
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string msg = processToStart.Id + " - " + processToStart.StartInfo.FileName + " " + processToStart.StartInfo.Arguments;
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processToStart.WaitForExit();
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try
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{
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if (_orderlyShutdown)
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{
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LogEvent("Child process [" + msg + "] terminated with " + processToStart.ExitCode, EventLogEntryType.Information);
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}
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else
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{
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LogEvent("Child process [" + msg + "] finished with " + processToStart.ExitCode, EventLogEntryType.Warning);
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// if we finished orderly, report that to SCM.
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// by not reporting unclean shutdown, we let Windows SCM to decide if it wants to
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// restart the service automatically
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if (processToStart.ExitCode == 0)
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SignalShutdownComplete();
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Environment.Exit(processToStart.ExitCode);
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}
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}
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catch (InvalidOperationException ioe)
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{
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LogEvent("WaitForExit " + ioe.Message);
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}
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try
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{
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processToStart.Dispose();
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}
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catch (InvalidOperationException ioe)
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{
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LogEvent("Dispose " + ioe.Message);
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}
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});
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}
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public static int Main(string[] args)
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{
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try
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{
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Run(args);
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return 0;
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}
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catch (WmiException e)
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{
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Console.Error.WriteLine(e);
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return (int)e.ErrorCode;
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}
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catch (Exception e)
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{
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Console.Error.WriteLine(e);
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return -1;
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}
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}
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private static void ThrowNoSuchService()
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{
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throw new WmiException(ReturnValue.NoSuchService);
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}
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// ReSharper disable once InconsistentNaming
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public static void Run(string[] _args, ServiceDescriptor descriptor = null)
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{
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if (_args.Length > 0)
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{
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var d = descriptor ?? new ServiceDescriptor();
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Win32Services svc = new WmiRoot().GetCollection<Win32Services>();
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Win32Service s = svc.Select(d.Id);
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var args = new List<string>(Array.AsReadOnly(_args));
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if (args[0] == "/redirect")
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{
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// Redirect output
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// One might ask why we support this when the caller
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// can redirect the output easily. The answer is for supporting UAC.
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// On UAC-enabled Windows such as Vista, SCM operation requires
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// elevated privileges, thus winsw.exe needs to be launched
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// accordingly. This in turn limits what the caller can do,
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// and among other things it makes it difficult for the caller
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// to read stdout/stderr. Thus redirection becomes handy.
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var f = new FileStream(args[1], FileMode.Create);
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var w = new StreamWriter(f) {AutoFlush = true};
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Console.SetOut(w);
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Console.SetError(w);
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var handle = f.Handle;
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Kernel32.SetStdHandle(-11, handle); // set stdout
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Kernel32.SetStdHandle(-12, handle); // set stder
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args = args.GetRange(2, args.Count - 2);
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}
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args[0] = args[0].ToLower();
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if (args[0] == "install")
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{
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// Check if the service exists
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if (s != null)
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{
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Console.WriteLine("Service with id '" + d.Id + "' already exists");
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Console.WriteLine("To install the service, delete the existing one or change service Id in the configuration file");
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throw new Exception("Installation failure: Service with id '" + d.Id + "' already exists");
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}
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string username=null, password=null;
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bool setallowlogonasaserviceright = false;
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if (args.Count > 1 && args[1] == "/p")
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{
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// we expected username/password on stdin
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Console.Write("Username: ");
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username = Console.ReadLine();
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Console.Write("Password: ");
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password = ReadPassword();
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Console.WriteLine();
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Console.Write("Set Account rights to allow log on as a service (y/n)?: ");
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var keypressed = Console.ReadKey();
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Console.WriteLine();
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if (keypressed.Key == ConsoleKey.Y)
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{
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setallowlogonasaserviceright = true;
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}
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}
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else
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{
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if (d.HasServiceAccount())
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{
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username = d.ServiceAccountUser;
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password = d.ServiceAccountPassword;
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setallowlogonasaserviceright = d.AllowServiceAcountLogonRight;
|
|
}
|
|
}
|
|
|
|
if (setallowlogonasaserviceright)
|
|
{
|
|
LogonAsAService.AddLogonAsAServiceRight(username);
|
|
}
|
|
|
|
svc.Create (
|
|
d.Id,
|
|
d.Caption,
|
|
"\"" + d.ExecutablePath + "\"",
|
|
ServiceType.OwnProcess,
|
|
ErrorControl.UserNotified,
|
|
d.StartMode,
|
|
d.Interactive,
|
|
username,
|
|
password,
|
|
d.ServiceDependencies);
|
|
|
|
// update the description
|
|
/* Somehow this doesn't work, even though it doesn't report an error
|
|
Win32Service s = svc.Select(d.Id);
|
|
s.Description = d.Description;
|
|
s.Commit();
|
|
*/
|
|
|
|
// so using a classic method to set the description. Ugly.
|
|
Registry.LocalMachine.OpenSubKey("System").OpenSubKey("CurrentControlSet").OpenSubKey("Services")
|
|
.OpenSubKey(d.Id, true).SetValue("Description", d.Description);
|
|
|
|
var actions = d.FailureActions;
|
|
if (actions.Count > 0)
|
|
{// set the failure actions
|
|
using (ServiceManager scm = new ServiceManager())
|
|
{
|
|
using (Service sc = scm.Open(d.Id))
|
|
{
|
|
sc.ChangeConfig(d.ResetFailureAfter, actions);
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
if (args[0] == "uninstall")
|
|
{
|
|
if (s == null)
|
|
{
|
|
Console.WriteLine("Warning! The service with id '" + d.Id + "' does not exist. Nothing to uninstall");
|
|
return; // there's no such service, so consider it already uninstalled
|
|
}
|
|
try
|
|
{
|
|
s.Delete();
|
|
}
|
|
catch (WmiException e)
|
|
{
|
|
if (e.ErrorCode == ReturnValue.ServiceMarkedForDeletion)
|
|
return; // it's already uninstalled, so consider it a success
|
|
throw e;
|
|
}
|
|
return;
|
|
}
|
|
if (args[0] == "start")
|
|
{
|
|
if (s == null) ThrowNoSuchService();
|
|
s.StartService();
|
|
return;
|
|
}
|
|
if (args[0] == "stop")
|
|
{
|
|
if (s == null) ThrowNoSuchService();
|
|
s.StopService();
|
|
return;
|
|
}
|
|
if (args[0] == "restart")
|
|
{
|
|
if (s == null)
|
|
ThrowNoSuchService();
|
|
|
|
if(s.Started)
|
|
s.StopService();
|
|
|
|
while (s.Started)
|
|
{
|
|
Thread.Sleep(1000);
|
|
s = svc.Select(d.Id);
|
|
}
|
|
|
|
s.StartService();
|
|
return;
|
|
}
|
|
if (args[0] == "restart!")
|
|
{
|
|
// run restart from another process group. see README.md for why this is useful.
|
|
|
|
STARTUPINFO si = new STARTUPINFO();
|
|
PROCESS_INFORMATION pi = new PROCESS_INFORMATION();
|
|
|
|
bool result = Kernel32.CreateProcess(null, d.ExecutablePath+" restart", IntPtr.Zero, IntPtr.Zero, false, 0x200/*CREATE_NEW_PROCESS_GROUP*/, IntPtr.Zero, null, ref si, out pi);
|
|
if (!result)
|
|
{
|
|
throw new Exception("Failed to invoke restart: "+Marshal.GetLastWin32Error());
|
|
}
|
|
return;
|
|
}
|
|
if (args[0] == "status")
|
|
{
|
|
if (s == null)
|
|
Console.WriteLine("NonExistent");
|
|
else if (s.Started)
|
|
Console.WriteLine("Started");
|
|
else
|
|
Console.WriteLine("Stopped");
|
|
return;
|
|
}
|
|
if (args[0] == "test")
|
|
{
|
|
WrapperService wsvc = new WrapperService();
|
|
wsvc.OnStart(args.ToArray());
|
|
Thread.Sleep(1000);
|
|
wsvc.OnStop();
|
|
return;
|
|
}
|
|
if (args[0] == "help" || args[0] == "--help" || args[0] == "-h"
|
|
|| args[0] == "-?" || args[0] == "/?")
|
|
{
|
|
printHelp();
|
|
return;
|
|
}
|
|
if (args[0] == "version")
|
|
{
|
|
printVersion();
|
|
return;
|
|
}
|
|
|
|
Console.WriteLine("Unknown command: " + args[0]);
|
|
printAvailableCommandsInfo();
|
|
throw new Exception("Unknown command: " + args[0]);
|
|
|
|
}
|
|
Run(new WrapperService());
|
|
}
|
|
|
|
private static string ReadPassword()
|
|
{
|
|
StringBuilder buf = new StringBuilder();
|
|
ConsoleKeyInfo key;
|
|
while (true)
|
|
{
|
|
key = Console.ReadKey(true);
|
|
if (key.Key == ConsoleKey.Enter)
|
|
{
|
|
return buf.ToString();
|
|
}
|
|
else if (key.Key == ConsoleKey.Backspace)
|
|
{
|
|
buf.Remove(buf.Length - 1, 1);
|
|
Console.Write("\b \b");
|
|
}
|
|
else
|
|
{
|
|
Console.Write('*');
|
|
buf.Append(key.KeyChar);
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void printHelp()
|
|
{
|
|
Console.WriteLine("A wrapper binary that can be used to host executables as Windows services");
|
|
Console.WriteLine("");
|
|
Console.WriteLine("Usage: winsw [/redirect file] <command> [<args>]");
|
|
Console.WriteLine(" Missing arguments trigger the service mode");
|
|
Console.WriteLine("");
|
|
printAvailableCommandsInfo();
|
|
Console.WriteLine("");
|
|
Console.WriteLine("Extra options:");
|
|
Console.WriteLine("- '/redirect' - redirect the wrapper's STDOUT and STDERR to the specified file");
|
|
Console.WriteLine("");
|
|
printVersion();
|
|
Console.WriteLine("More info: https://github.com/kohsuke/winsw");
|
|
Console.WriteLine("Bug tracker: https://github.com/kohsuke/winsw/issues");
|
|
}
|
|
|
|
//TODO: Rework to enum in winsw-2.0
|
|
private static void printAvailableCommandsInfo()
|
|
{
|
|
Console.WriteLine("Available commands:");
|
|
Console.WriteLine("- 'install' - install the service to Windows Service Controller");
|
|
Console.WriteLine("- 'uninstall' - uninstall the service");
|
|
Console.WriteLine("- 'start' - start the service (must be installed before)");
|
|
Console.WriteLine("- 'stop' - stop the service");
|
|
Console.WriteLine("- 'restart' - restart the service");
|
|
Console.WriteLine("- 'restart!' - self-restart (can be called from child processes)");
|
|
Console.WriteLine("- 'status' - check the current status of the service");
|
|
Console.WriteLine("- 'test' - check if the service can be started and then stopped");
|
|
Console.WriteLine("- 'version' - print the version info");
|
|
Console.WriteLine("- 'help' - print the help info (aliases: -h,--help,-?,/?)");
|
|
}
|
|
|
|
private static void printVersion()
|
|
{
|
|
Console.WriteLine("WinSW " + Version);
|
|
}
|
|
}
|
|
}
|