Implementing IsAdministrator for non-Windows

v2rayN/ServiceLib/Common/Utils.cs

@@ -7,6 +7,7 @@ using System.Net.Sockets;
 using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Security.Cryptography;
+using System.Security.Principal;
 using System.Text;
 using System.Text.RegularExpressions;
 
@@ -701,24 +702,6 @@ namespace ServiceLib.Common
             return systemHosts;
         }
 
-        public static string GetExeName(string name)
-        {
-            if (IsWindows())
-            {
-                return $"{name}.exe";
-            }
-            else
-            {
-                return name;
-            }
-        }
-
-        public static bool IsWindows() => RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
-
-        public static bool IsLinux() => RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
-
-        public static bool IsOSX() => RuntimeInformation.IsOSPlatform(OSPlatform.OSX);
-
         #endregion 杂项
 
         #region TempPath
@@ -864,5 +847,39 @@ namespace ServiceLib.Common
         }
 
         #endregion TempPath
+
+        #region Platform
+
+        public static bool IsWindows() => RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+
+        public static bool IsLinux() => RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
+
+        public static bool IsOSX() => RuntimeInformation.IsOSPlatform(OSPlatform.OSX);
+
+        public static string GetExeName(string name)
+        {
+            if (IsWindows())
+            {
+                return $"{name}.exe";
+            }
+            else
+            {
+                return name;
+            }
+        }
+
+        public static bool IsAdministrator()
+        {
+            if (IsWindows())
+            {
+                return new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator);
+            }
+            else
+            {
+                return Mono.Unix.Native.Syscall.geteuid() == 0;
+            }
+        }
+
+        #endregion Platform
     }
 }

v2rayN/ServiceLib/ServiceLib.csproj

@@ -9,6 +9,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Downloader" Version="3.2.0" />
+		<PackageReference Include="Mono.Posix.NETStandard" Version="1.0.0" />
 		<PackageReference Include="ReactiveUI" Version="20.1.63" />
 		<PackageReference Include="ReactiveUI.Fody" Version="19.5.41" />
 		<PackageReference Include="sqlite-net-pcl" Version="1.9.172" />

v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs

@@ -40,7 +40,7 @@ namespace v2rayN.Desktop.Views
             menuCheckUpdate.Click += MenuCheckUpdate_Click;
             menuBackupAndRestore.Click += MenuBackupAndRestore_Click;
 
-            var IsAdministrator = true;//WindowsUtils.IsAdministrator();
+            var IsAdministrator = Utils.IsAdministrator();
             MessageBus.Current.Listen<string>(Global.CommandSendSnackMsg).Subscribe(x => DelegateSnackMsg(x));
             ViewModel = new MainWindowViewModel(IsAdministrator, UpdateViewHandler);
             Locator.CurrentMutable.RegisterLazySingleton(() => ViewModel, typeof(MainWindowViewModel));
@@ -119,14 +119,13 @@ namespace v2rayN.Desktop.Views
                 }
             });
 
+            this.Title = $"{Utils.GetVersion()} - {(IsAdministrator ? ResUI.RunAsAdmin : ResUI.NotRunAsAdmin)}";
             if (Utils.IsWindows())
             {
-                this.Title = $"{Utils.GetVersion()} - {(IsAdministrator ? ResUI.RunAsAdmin : ResUI.NotRunAsAdmin)}";
                 menuGlobalHotkeySetting.IsVisible = false;
             }
             else
             {
-                this.Title = $"{Utils.GetVersion()}";
                 menuRebootAsAdmin.IsVisible = false;
                 menuSettingsSetUWP.IsVisible = false;
                 menuGlobalHotkeySetting.IsVisible = false;

v2rayN/v2rayN/Common/WindowsUtils.cs

@@ -209,26 +209,6 @@ namespace v2rayN
             DwmSetWindowAttribute(hWnd, DWMWINDOWATTRIBUTE.DWMWA_USE_IMMERSIVE_DARK_MODE, ref attribute, attributeSize);
         }         
 
-        /// <summary>
-        /// IsAdministrator
-        /// </summary>
-        /// <returns></returns>
-        public static bool IsAdministrator()
-        {
-            try
-            {
-                WindowsIdentity current = WindowsIdentity.GetCurrent();
-                WindowsPrincipal windowsPrincipal = new WindowsPrincipal(current);
-                //WindowsBuiltInRole可以枚举出很多权限，例如系统用户、User、Guest等等
-                return windowsPrincipal.IsInRole(WindowsBuiltInRole.Administrator);
-            }
-            catch (Exception ex)
-            {
-                Logging.SaveLog(ex.Message, ex);
-                return false;
-            }
-        }
-
         /// <summary>
         /// 开机自动启动
         /// </summary>
@@ -241,7 +221,7 @@ namespace v2rayN
                 var autoRunName = $"{AutoRunName}_{Utils.GetMD5(Utils.StartupPath())}";
                 //delete first
                 RegWriteValue(AutoRunRegPath, autoRunName, "");
-                if (IsAdministrator())
+                if (Utils.IsAdministrator())
                 {
                     AutoStart(autoRunName, "", "");
                 }
@@ -249,7 +229,7 @@ namespace v2rayN
                 if (run)
                 {
                     string exePath = Utils.GetExePath();
-                    if (IsAdministrator())
+                    if (Utils.IsAdministrator())
                     {
                         AutoStart(autoRunName, exePath, "");
                     }

v2rayN/v2rayN/Views/MainWindow.xaml.cs

@@ -36,7 +36,7 @@ namespace v2rayN.Views
             menuCheckUpdate.Click += MenuCheckUpdate_Click;
             menuBackupAndRestore.Click += MenuBackupAndRestore_Click;
 
-            var IsAdministrator = WindowsUtils.IsAdministrator();
+            var IsAdministrator = Utils.IsAdministrator();
             MessageBus.Current.Listen<string>(Global.CommandSendSnackMsg).Subscribe(x => DelegateSnackMsg(x));
             ViewModel = new MainWindowViewModel(IsAdministrator, UpdateViewHandler);
             Locator.CurrentMutable.RegisterLazySingleton(() => ViewModel, typeof(MainWindowViewModel));