Add alternative for retrieving IPKey

- Added an alternative for retrieving the IPKey for the final build (win-x64, win-x86, linux-x64, osx-x64).

Author: duck-dev

src/Program.cs

@@ -1,4 +1,6 @@
 using System;
+using System.IO;
+using System.Threading.Tasks;
 using Avalonia;
 using Avalonia.ReactiveUI;
 using FileTransfer.UtilityCollection;
@@ -11,9 +13,32 @@ internal static class Program
     // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
     // yet and stuff might break.
     [STAThread]
-    public static void Main(string[] args)
+    public static async Task Main(string[] args)
     {
-        Utilities.IPKey = args[0];
+        if(args.Length > 0)
+            Utilities.IPKey = args[0];
+        else
+        {
+            string ipKeyPath = Path.Combine(Utilities.ExecutingAssemblyPath, "IPKey.txt");
+            if (File.Exists(ipKeyPath))
+            {
+                string encryptedIpKey = await File.ReadAllTextAsync(ipKeyPath);
+                string finalIpKey = string.Empty;
+                foreach (char c in encryptedIpKey)
+                {
+                    if (char.IsNumber(c))
+                        finalIpKey += Utilities.Cipher(c);
+                    else
+                        finalIpKey += c;
+                }
+
+                Utilities.IPKey = finalIpKey;
+            }
+            else
+            {
+                throw new IOException($"File '{ipKeyPath}' doesn't exist!");
+            }
+        }
         BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
     }
 

src/UtilityCollection/UniversalUtilities.cs

@@ -18,7 +18,9 @@ namespace FileTransfer.UtilityCollection;
 internal static partial class Utilities
 {
     internal const string AssetsPath = "avares://FileTransfer/Assets/";
-    
+
+    internal static string ExecutingAssemblyPath { get; } = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location) ?? throw new DirectoryNotFoundException("Directory name of the currently executing assembly is null.");
+
     /// <summary>
     /// The parent path of all settings- and data-files
     /// </summary>