Add auto update to linux and macos

Source/LoadByOS/MacOSConfigApp/MacOSInterop.cs

@@ -1,14 +1,78 @@
 using LibationFileManager;
+using System.Diagnostics;
 
 namespace MacOSConfigApp
 {
     internal class MacOSInterop : IInteropFunctions
-    {
-        public MacOSInterop() { }
+	{
+		private const string AppPath = "/Applications/Libation.app";
+		public MacOSInterop() { }
         public MacOSInterop(params object[] values) { }
 
-        public void SetFolderIcon(string image, string directory) => throw new PlatformNotSupportedException();
+		public void SetFolderIcon(string image, string directory) => throw new PlatformNotSupportedException();
         public void DeleteFolderIcon(string directory) => throw new PlatformNotSupportedException();
-        public void CopyTextToClipboard(string text) => throw new PlatformNotSupportedException();
-    }
+
+		//I haven't figured out how to find the app bundle's directory from within
+		//the running process, so don't update unless it's "installed" in /Applications
+		public bool CanUpdate => Directory.Exists(AppPath);
+
+		public void InstallUpdate(string updateBundle)
+		{
+			Serilog.Log.Information($"Extracting update bundle to {AppPath}");
+
+			//tar wil overwrite existing without elevated privileges
+			Process.Start("tar", $"-xzf \"{updateBundle}\" -C \"/Applications\"").WaitForExit();
+			
+			//For now, it seems like this step is unnecessary. We can overwrite and
+			//run Libation without needing to re-add the exception. This is insurance.
+			RunAsRoot(null, $"""
+sudo spctl --master-disable
+sudo spctl --add --label 'Libation' {AppPath}
+open {AppPath}
+sudo spctl --master-enable
+""");
+		}
+
+		//Using osascript -e '[script]' works from the terminal, but I haven't figured
+		//out the syntax for it to work from create_process, so write to stdin instead.
+		public Process RunAsRoot(string _, string command)
+		{
+			const string osascript = "osascript";
+			var fullCommand = $"do shell script \"{command}\" with administrator privileges";
+
+			var psi = new ProcessStartInfo()
+			{
+				FileName = osascript,
+				UseShellExecute = false,
+				Arguments = "-",
+				RedirectStandardError= true,
+				RedirectStandardOutput= true,
+				RedirectStandardInput= true,
+			};
+
+			Serilog.Log.Logger.Information($"running {osascript} as root: {{script}}", fullCommand);
+
+			var proc = Process.Start(psi);
+			proc.ErrorDataReceived += Proc_ErrorDataReceived;
+			proc.OutputDataReceived += Proc_OutputDataReceived;
+			proc.BeginErrorReadLine();
+			proc.BeginOutputReadLine();
+			proc.StandardInput.WriteLine(fullCommand);
+			proc.StandardInput.Close();
+
+			return proc;
+		}
+
+		private void Proc_OutputDataReceived(object sender, DataReceivedEventArgs e)
+		{
+			if (e.Data != null)
+				Serilog.Log.Logger.Information("stderr: {data}", e.Data);
+		}
+
+		private void Proc_ErrorDataReceived(object sender, DataReceivedEventArgs e)
+		{
+			if (e.Data!= null)
+				Serilog.Log.Logger.Information("stderr: {data}", e.Data);
+		}
+	}
 }