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- using System;
- using System.IO;
- using System.Net.Sockets;
- using System.Net;
-
- using Shadowsocks.Util;
-
- namespace Shadowsocks.Controller
- {
- public class Logging
- {
- public static string LogFilePath;
-
- public static bool OpenLogFile()
- {
- try
- {
- LogFilePath = Utils.GetTempPath("shadowsocks.log");
-
- FileStream fs = new FileStream(LogFilePath, FileMode.Append);
- StreamWriterWithTimestamp sw = new StreamWriterWithTimestamp(fs);
- sw.AutoFlush = true;
- Console.SetOut(sw);
- Console.SetError(sw);
-
- return true;
- }
- catch (IOException e)
- {
- Console.WriteLine(e.ToString());
- return false;
- }
- }
-
- private static void WriteToLogFile(object o)
- {
- Console.WriteLine(o);
- }
-
- public static void Error(object o)
- {
- WriteToLogFile("[E] " + o);
- }
-
- public static void Info(object o)
- {
- WriteToLogFile(o);
- }
-
- public static void Debug(object o)
- {
- #if DEBUG
- WriteToLogFile("[D] " + o);
- #endif
- }
-
- public static void Debug(EndPoint local, EndPoint remote, int len, string header = null, string tailer = null)
- {
- #if DEBUG
- if (header == null && tailer == null)
- Debug($"{local} => {remote} (size={len})");
- else if (header == null && tailer != null)
- Debug($"{local} => {remote} (size={len}), {tailer}");
- else if (header != null && tailer == null)
- Debug($"{header}: {local} => {remote} (size={len})");
- else
- Debug($"{header}: {local} => {remote} (size={len}), {tailer}");
- #endif
- }
-
- public static void Debug(Socket sock, int len, string header = null, string tailer = null)
- {
- #if DEBUG
- Debug(sock.LocalEndPoint, sock.RemoteEndPoint, len, header, tailer);
- #endif
- }
-
- public static void LogUsefulException(Exception e)
- {
- // just log useful exceptions, not all of them
- if (e is SocketException)
- {
- SocketException se = (SocketException)e;
- if (se.SocketErrorCode == SocketError.ConnectionAborted)
- {
- // closed by browser when sending
- // normally happens when download is canceled or a tab is closed before page is loaded
- }
- else if (se.SocketErrorCode == SocketError.ConnectionReset)
- {
- // received rst
- }
- else if (se.SocketErrorCode == SocketError.NotConnected)
- {
- // The application tried to send or receive data, and the System.Net.Sockets.Socket is not connected.
- }
- else if (se.SocketErrorCode == SocketError.HostUnreachable)
- {
- // There is no network route to the specified host.
- }
- else if (se.SocketErrorCode == SocketError.TimedOut)
- {
- // The connection attempt timed out, or the connected host has failed to respond.
- }
- else
- {
- Info(e);
- }
- }
- else if (e is ObjectDisposedException)
- {
- }
- else
- {
- Info(e);
- }
- }
- }
-
- // Simply extended System.IO.StreamWriter for adding timestamp workaround
- public class StreamWriterWithTimestamp : StreamWriter
- {
- public StreamWriterWithTimestamp(Stream stream) : base(stream)
- {
- }
-
- private string GetTimestamp()
- {
- return "[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "] ";
- }
-
- public override void WriteLine(string value)
- {
- base.WriteLine(GetTimestamp() + value);
- }
-
- public override void Write(string value)
- {
- base.Write(GetTimestamp() + value);
- }
- }
-
- }
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