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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using v2rayN.Mode;
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using v2rayN.Properties;
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using v2rayN.Tool;
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namespace v2rayN.HttpProxyHandler
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{
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/// <summary>
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/// Privoxy处理类，提供http协议代理
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/// </summary>
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class PrivoxyHandler
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{
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/// <summary>
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/// 单例
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/// </summary>
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private static PrivoxyHandler instance;
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private static int _uid;
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private static string _uniqueConfigFile;
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private Process _process;
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private static string _privoxyName = "v2ray_privoxy";
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static PrivoxyHandler()
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{
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try
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{
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_uid = Application.StartupPath.GetHashCode();
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_uniqueConfigFile = string.Format("privoxy_{0}.conf", _uid);
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FileManager.UncompressFile(Utils.GetTempPath($"{_privoxyName}.exe"), Resources.privoxy_exe);
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}
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catch (IOException ex)
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{
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Utils.SaveLog(ex.Message, ex);
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}
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}
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/// <summary>
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/// 单例
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/// </summary>
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public static PrivoxyHandler Instance
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{
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get
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{
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if (instance == null)
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{
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instance = new PrivoxyHandler();
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}
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return instance;
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}
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}
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public int RunningPort
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{
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get; set;
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}
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public void Restart(int localPort, Config config)
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{
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Stop();
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Start(localPort, config);
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}
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public void Start(int localPort, Config config)
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{
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try
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{
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if (_process == null)
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{
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string privoxyConfig = "";//Resources.privoxy_conf;
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RunningPort = config.GetLocalPort(Global.InboundHttp);
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privoxyConfig = privoxyConfig.Replace("__SOCKS_PORT__", localPort.ToString());
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privoxyConfig = privoxyConfig.Replace("__PRIVOXY_BIND_PORT__", RunningPort.ToString());
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if (config.allowLANConn)
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{
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privoxyConfig = privoxyConfig.Replace("__PRIVOXY_BIND_IP__", "0.0.0.0");
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}
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else
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{
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privoxyConfig = privoxyConfig.Replace("__PRIVOXY_BIND_IP__", Global.Loopback);
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}
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FileManager.ByteArrayToFile(Utils.GetTempPath(_uniqueConfigFile), Encoding.UTF8.GetBytes(privoxyConfig));
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_process = new Process
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{
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// Configure the process using the StartInfo properties.
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StartInfo =
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{
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FileName = $"{_privoxyName}.exe",
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Arguments = _uniqueConfigFile,
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WorkingDirectory = Utils.GetTempPath(),
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WindowStyle = ProcessWindowStyle.Hidden,
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UseShellExecute = true,
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CreateNoWindow = true
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}
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};
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_process.Start();
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/*
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* Add this process to job obj associated with this ss process, so that
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* when ss exit unexpectedly, this process will be forced killed by system.
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*/
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Global.processJob.AddProcess(_process.Handle);
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}
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}
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catch (Exception ex)
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{
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RunningPort = 0;
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Utils.SaveLog(ex.Message, ex);
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}
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}
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public void Stop()
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{
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if (_process != null)
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{
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KillProcess(_process);
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_process.Dispose();
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_process = null;
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RunningPort = 0;
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}
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else
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{
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Process[] existingPrivoxy = Process.GetProcessesByName(_privoxyName);
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foreach (Process p in existingPrivoxy.Where(IsChildProcess))
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{
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KillProcess(p);
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}
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}
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}
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private static void KillProcess(Process p)
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{
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try
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{
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p.CloseMainWindow();
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p.WaitForExit(100);
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if (!p.HasExited)
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{
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p.Kill();
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p.WaitForExit(100);
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}
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}
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catch (Exception ex)
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{
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Utils.SaveLog(ex.Message, ex);
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}
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}
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/*
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* We won't like to kill other ss instances' v2ray_privoxy.exe.
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* This function will check whether the given process is created
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* by this process by checking the module path or command line.
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*
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* Since it's required to put ss in different dirs to run muti instances,
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* different instance will create their unique "privoxy_UID.conf" where
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* UID is hash of ss's location.
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*/
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private static bool IsChildProcess(Process process)
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{
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try
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{
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/*
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* Under PortableMode, we could identify it by the path of v2ray_privoxy.exe.
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*/
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string path = process.MainModule.FileName;
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return Utils.GetTempPath($"{_privoxyName}.exe").Equals(path);
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}
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catch (Exception ex)
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{
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Utils.SaveLog(ex.Message, ex);
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/*
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* Sometimes Process.GetProcessesByName will return some processes that
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* are already dead, and that will cause exceptions here.
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* We could simply ignore those exceptions.
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*/
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//Logging.LogUsefulException(ex);
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return false;
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}
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}
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}
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}
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2dust
3 years ago