New option for ss:// URL association

shadowsocks-csharp/Controller/Service/NamedPipeServer.cs

@@ -0,0 +1,47 @@
+using System;
+using System.IO;
+using System.IO.Pipes;
+using System.Net;
+using System.Text;
+
+namespace Shadowsocks.Controller
+{
+    class RequestAddUrlEventArgs : EventArgs
+    {
+        public readonly string Url;
+
+        public RequestAddUrlEventArgs(string url)
+        {
+            this.Url = url;
+        }
+    }
+
+    internal class NamedPipeServer
+    {
+        public event EventHandler<RequestAddUrlEventArgs> AddUrlRequested;
+        public async void Run(string path)
+        {
+            byte[] buf = new byte[4096];
+            while (true)
+            {
+                using (NamedPipeServerStream stream = new NamedPipeServerStream(path))
+                {
+                    stream.WaitForConnection();
+                    await stream.ReadAsync(buf, 0, 4);
+                    int opcode = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buf, 0));
+                    if (opcode == 1)
+                    {
+                        await stream.ReadAsync(buf, 0, 4);
+                        int strlen = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buf, 0));
+
+                        await stream.ReadAsync(buf, 0, strlen);
+                        string url = Encoding.UTF8.GetString(buf, 0, strlen);
+
+                        AddUrlRequested?.Invoke(this, new RequestAddUrlEventArgs(url));
+                    }
+                    stream.Close();
+                }
+            }
+        }
+    }
+}

shadowsocks-csharp/Controller/ShadowsocksController.cs

@@ -218,6 +218,25 @@ public void SaveStrategyConfigurations(StatisticsStrategyConfiguration configura
             StatisticsStrategyConfiguration.Save(configuration);
         }
 
+        public bool AskAddServerBySSURL(string ssURL)
+        {
+            var dr = MessageBox.Show(I18N.GetString("Import from URL: {0} ?", ssURL), I18N.GetString("Shadowsocks"), MessageBoxButtons.YesNo);
+            if (dr == DialogResult.Yes)
+            {
+                if (AddServerBySSURL(ssURL))
+                {
+                    MessageBox.Show(I18N.GetString("Successfully imported from {0}", ssURL));
+                    return true;
+                }
+                else
+                {
+                    MessageBox.Show(I18N.GetString("Failed to import. Please check if the link is valid."));
+                }
+            }
+            return false;
+        }
+
+
         public bool AddServerBySSURL(string ssURL)
         {
             try

shadowsocks-csharp/Controller/System/ProtocolHandler.cs

@@ -0,0 +1,107 @@
+using Microsoft.Win32;
+using NLog;
+using Shadowsocks.Util;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Shadowsocks.Controller
+{
+    static class ProtocolHandler
+    {
+        const string ssURLRegKey = @"SOFTWARE\Classes\ss";
+
+        private static Logger logger = LogManager.GetCurrentClassLogger();
+
+        // Don't use Application.ExecutablePath
+        // see https://stackoverflow.com/questions/12945805/odd-c-sharp-path-issue
+        private static readonly string ExecutablePath = Assembly.GetEntryAssembly().Location;
+
+        // TODO: Elevate when necessary
+        public static bool Set(bool enabled)
+        {
+            RegistryKey ssURLAssociation = null;
+
+            try
+            {
+                ssURLAssociation = Registry.CurrentUser.CreateSubKey(ssURLRegKey, RegistryKeyPermissionCheck.ReadWriteSubTree);
+                if (ssURLAssociation == null)
+                {
+                    logger.Error(@"Failed to create HKCU\SOFTWARE\Classes\ss to register ss:// association.");
+                    return false;
+                }
+                if (enabled)
+                {
+                    ssURLAssociation.SetValue("", "URL:Shadowsocks");
+                    ssURLAssociation.SetValue("URL Protocol", "");
+                    var shellOpen = ssURLAssociation.CreateSubKey("shell").CreateSubKey("open").CreateSubKey("command");
+                    shellOpen.SetValue("", $"{ExecutablePath} --open-url %1");
+                    logger.Info(@"Successfully added ss:// association.");
+                }
+                else
+                {
+                    Registry.CurrentUser.DeleteSubKeyTree(ssURLRegKey);
+                    logger.Info(@"Successfully removed ss:// association.");
+                }
+                return true;
+            }
+            catch (Exception e)
+            {
+                logger.LogUsefulException(e);
+                return false;
+            }
+            finally
+            {
+                if (ssURLAssociation != null)
+                {
+                    try
+                    {
+                        ssURLAssociation.Close();
+                        ssURLAssociation.Dispose();
+                    }
+                    catch (Exception e)
+                    { logger.LogUsefulException(e); }
+                }
+            }
+        }
+
+        public static bool Check()
+        {
+            RegistryKey ssURLAssociation = null;
+            try
+            {
+                ssURLAssociation = Registry.CurrentUser.OpenSubKey(ssURLRegKey, true);
+                if (ssURLAssociation == null)
+                {
+                    //logger.Info(@"ss:// links not associated.");
+                    return false;
+                }
+
+                var shellOpen = ssURLAssociation.OpenSubKey("shell").OpenSubKey("open").OpenSubKey("command");
+                return (string)shellOpen.GetValue("") == $"{ExecutablePath} --open-url %1";
+            }
+            catch (Exception e)
+            {
+                logger.LogUsefulException(e);
+                return false;
+            }
+            finally
+            {
+                if (ssURLAssociation != null)
+                {
+                    try
+                    {
+                        ssURLAssociation.Close();
+                        ssURLAssociation.Dispose();
+                    }
+                    catch (Exception e)
+                    { logger.LogUsefulException(e); }
+                }
+            }
+        }
+
+    }
+}

shadowsocks-csharp/Data/i18n.csv

@@ -18,6 +18,7 @@ Servers,Серверы,服务器,伺服器,サーバー,서버
 Edit Servers...,Редактировать серверы…,编辑服务器...,編輯伺服器...,サーバーの編集...,서버 수정…
 Statistics Config...,Настройки статистики…,统计配置...,統計設定檔...,統計情報の設定...,통계 설정
 Start on Boot,Автозагрузка,开机启动,開機啟動,システムと同時に起動,시스템 시작 시에 시작하기
+Associate ss:// Links,Ассоциированный ss:// Ссылки,关联 ss:// 链接,關聯 ss:// 鏈接,,
 Forward Proxy...,Прямой прокси…,正向代理设置...,正向 Proxy 設定...,フォワードプロキシの設定...,포워드 프록시
 Allow other Devices to connect,Общий доступ к подключению,允许其他设备连入,允許其他裝置連入,他のデバイスからの接続を許可する,다른 기기에서 연결 허용
 Local PAC,Локальный PAC,使用本地 PAC,使用本機 PAC,ローカル PAC,로컬 PAC
@@ -184,6 +185,9 @@ Find Shadowsocks icon in your notify tray.,Значок Shadowsocks можно 
 "If you want to start multiple Shadowsocks, make a copy in another directory.","Если вы хотите запустить несколько копий Shadowsocks одновременно, создайте отдельную папку на каждую копию.",如果想同时启动多个，可以另外复制一份到别的目录。,如果想同時啟動多個，可以另外複製一份至別的目錄。,複数起動したい場合は、プログラムファイルを別のフォルダーにコピーしてから、もう一度実行して下さい。,"만약 여러 개의 Shadowsocks를 사용하고 싶으시다면, 파일을 다른 곳에 복사해주세요."
 Failed to decode QRCode,Не удалось распознать QRCode,无法解析二维码,QR 碼解碼失敗,QR コードの読み取りに失敗しました。,QR코드를 해석하는데에 실패했습니다.
 Failed to update registry,Не удалось обновить запись в реестре,无法修改注册表,無法修改登錄檔,レジストリの更新に失敗しました。,레지스트리를 업데이트하는데에 실패했습니다.
+Import from URL: {0} ?,импортировать из адреса: {0} ?,从URL导入: {0} ?,從URL匯入: {0} ?,,
+Successfully imported from {0},Успешно импортировано из {0},导入成功：{0},導入成功：{0},,
+Failed to import. Please check if the link is valid.,,导入失败，请检查链接是否有效。,導入失敗，請檢查鏈接是否有效。,,
 System Proxy On: ,Системный прокси:,系统代理已启用：,系統 Proxy 已啟用：,システム プロキシが有効：,시스템 프록시 활성화됨: 
 Running: Port {0},Запущен на порту {0},正在运行：端口 {0},正在執行：連接埠號碼 {0},実行中：ポート {0},실행 중: 포트 {0}번
 "Unexpected error, shadowsocks will exit. Please report to","Непредвиденная ошибка, пожалуйста сообщите на",非预期错误，Shadowsocks将退出。请提交此错误到,非預期錯誤，Shadowsocks 將結束。請報告此錯誤至,予想外のエラーが発生したため、Shadowsocks を終了します。詳しくは下記までお問い合わせ下さい：,알 수 없는 오류로 Shadowsocks가 종료될 것입니다. 오류를 제보해주세요:

shadowsocks-csharp/Program.cs

@@ -1,21 +1,26 @@
-using System;
-using System.Diagnostics;
-using System.IO;
-using System.Threading;
-using System.Windows.Forms;
+using Microsoft.Win32;
 using NLog;
-using Microsoft.Win32;
-
 using Shadowsocks.Controller;
 using Shadowsocks.Controller.Hotkeys;
 using Shadowsocks.Util;
 using Shadowsocks.View;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.IO.Pipes;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows.Forms;
 
 namespace Shadowsocks
 {
-    static class Program
+    internal static class Program
     {
-        private static Logger logger = LogManager.GetCurrentClassLogger();
+        private static readonly Logger logger = LogManager.GetCurrentClassLogger();
         public static ShadowsocksController MainController { get; private set; }
         public static MenuViewController MenuController { get; private set; }
         public static string[] Args { get; private set; }
@@ -24,15 +29,15 @@ static class Program
         /// </summary>
         /// </summary>
         [STAThread]
-        static void Main(string[] args)
+        private static void Main(string[] args)
         {
             Directory.SetCurrentDirectory(Application.StartupPath);
             // todo: initialize the NLog configuartion
             Model.NLogConfig.TouchAndApplyNLogConfig();
 
             // .NET Framework 4.7.2 on Win7 compatibility
-            System.Net.ServicePointManager.SecurityProtocol |=
-                System.Net.SecurityProtocolType.Tls | System.Net.SecurityProtocolType.Tls11 | System.Net.SecurityProtocolType.Tls12;
+            ServicePointManager.SecurityProtocol |=
+                SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
 
             // store args for further use
             Args = args;
@@ -50,27 +55,58 @@ static void Main(string[] args)
                 if (DialogResult.OK == MessageBox.Show(I18N.GetString("Unsupported .NET Framework, please update to {0} or later.", "4.7.2"),
                 "Shadowsocks Error", MessageBoxButtons.OKCancel, MessageBoxIcon.Error))
                 {
-                    //Process.Start("https://www.microsoft.com/download/details.aspx?id=53344");    // 4.6.2
                     Process.Start("https://dotnet.microsoft.com/download/dotnet-framework/net472");
                 }
                 return;
             }
+            string pipename = $"Shadowsocks\\{Application.StartupPath.GetHashCode()}";
 
-            Utils.ReleaseMemory(true);
-            using (Mutex mutex = new Mutex(false, $"Global\\Shadowsocks_{Application.StartupPath.GetHashCode()}"))
+            string addedUrl = null;
+
+            using (NamedPipeClientStream pipe = new NamedPipeClientStream(pipename))
             {
-                Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
-                // handle UI exceptions
-                Application.ThreadException += Application_ThreadException;
-                // handle non-UI exceptions
-                AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
-                Application.ApplicationExit += Application_ApplicationExit;
-                SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
-                Application.EnableVisualStyles();
-                Application.SetCompatibleTextRenderingDefault(false);
-                AutoStartup.RegisterForRestart(true);
-
-                if (!mutex.WaitOne(0, false))
+                bool pipeExist = false;
+                try
+                {
+                    pipe.Connect(10);
+                    pipeExist = true;
+                }
+                catch (TimeoutException)
+                {
+                    pipeExist = false;
+                }
+
+                // TODO: switch to better argv parser when it's getting complicate
+                List<string> alist = Args.ToList();
+                // check --open-url param
+                int urlidx = alist.IndexOf("--open-url") + 1;
+                if (urlidx > 0)
+                {
+                    if (Args.Length <= urlidx)
+                    {
+                        return;
+                    }
+
+                    // --open-url exist, and no other instance, add it later
+                    if (!pipeExist)
+                    {
+                        addedUrl = Args[urlidx];
+                    }
+                    // has other instance, send url via pipe then exit
+                    else
+                    {
+                        byte[] b = Encoding.UTF8.GetBytes(Args[urlidx]);
+                        byte[] opAddUrl = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(1));
+                        byte[] blen = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(b.Length));
+                        pipe.Write(opAddUrl, 0, 4); // opcode addurl
+                        pipe.Write(blen, 0, 4);
+                        pipe.Write(b, 0, b.Length);
+                        pipe.Close();
+                        return;
+                    }
+                }
+                // has another instance, and no need to communicate with it return
+                else if (pipeExist)
                 {
                     Process[] oldProcesses = Process.GetProcessesByName("Shadowsocks");
                     if (oldProcesses.Length > 0)
@@ -83,21 +119,44 @@ static void Main(string[] args)
                         I18N.GetString("Shadowsocks is already running."));
                     return;
                 }
-                Directory.SetCurrentDirectory(Application.StartupPath);
-
+            }
+
+            Utils.ReleaseMemory(true);
+
+            Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
+            // handle UI exceptions
+            Application.ThreadException += Application_ThreadException;
+            // handle non-UI exceptions
+            AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
+            Application.ApplicationExit += Application_ApplicationExit;
+            SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+            AutoStartup.RegisterForRestart(true);
+
+            Directory.SetCurrentDirectory(Application.StartupPath);
+
 #if DEBUG
-                // truncate privoxy log file while debugging
-                string privoxyLogFilename = Utils.GetTempPath("privoxy.log");
-                if (File.Exists(privoxyLogFilename))
-                    using (new FileStream(privoxyLogFilename, FileMode.Truncate)) { }
+            // truncate privoxy log file while debugging
+            string privoxyLogFilename = Utils.GetTempPath("privoxy.log");
+            if (File.Exists(privoxyLogFilename))
+                using (new FileStream(privoxyLogFilename, FileMode.Truncate)) { }
 #endif
-                MainController = new ShadowsocksController();
-                MenuController = new MenuViewController(MainController);
+            MainController = new ShadowsocksController();
+            MenuController = new MenuViewController(MainController);
 
-                HotKeys.Init(MainController);
-                MainController.Start();
-                Application.Run();
-            }
+            HotKeys.Init(MainController);
+            MainController.Start();
+
+            NamedPipeServer namedPipeServer = new NamedPipeServer();
+            Task.Run(() => namedPipeServer.Run(pipename));
+            namedPipeServer.AddUrlRequested += (_1, e) => MainController.AskAddServerBySSURL(e.Url);
+            if (!addedUrl.IsNullOrEmpty())
+            {
+                MainController.AskAddServerBySSURL(addedUrl);
+            }
+
+            Application.Run();
         }
 
         private static int exited = 0;
@@ -135,7 +194,7 @@ private static void SystemEvents_PowerModeChanged(object sender, PowerModeChange
                     logger.Info("os wake up");
                     if (MainController != null)
                     {
-                        System.Threading.Tasks.Task.Factory.StartNew(() =>
+                        Task.Factory.StartNew(() =>
                         {
                             Thread.Sleep(10 * 1000);
                             try