GUI: Load binary file

Il2CppInspector.GUI/App.xaml.cs

@@ -7,6 +7,7 @@ using System.Linq;
 using System.Threading.Tasks;
 using System.Windows;
 using Il2CppInspector;
+using Inspector = Il2CppInspector.Il2CppInspector;
 
 namespace Il2CppInspectorGUI
 {
@@ -15,7 +16,9 @@ namespace Il2CppInspectorGUI
     /// </summary>
     public partial class App : Application
     {
-        public Metadata CurrentMetadata { get; private set; }
+        private Metadata metadata;
+
+        public List<Inspector> Il2CppImages { get; } = new List<Inspector>();
 
         public Exception LastException { get; private set; }
 
@@ -23,7 +26,43 @@ namespace Il2CppInspectorGUI
         public Task<bool> LoadMetadataAsync(string metadataFile) =>
             Task.Run(() => {
                 try {
-                    CurrentMetadata = new Metadata(new MemoryStream(File.ReadAllBytes(metadataFile)));
+                    metadata = new Metadata(new MemoryStream(File.ReadAllBytes(metadataFile)));
+                    return true;
+                }
+                catch (Exception ex) {
+                    LastException = ex;
+                    return false;
+                }
+            });
+
+        public Task<bool> LoadBinaryAsync(string binaryFile) =>
+            Task.Run(() => {
+                try {
+                    // This may throw other exceptions from the individual loaders as well
+                    IFileFormatReader stream = FileFormatReader.Load(binaryFile);
+                    if (stream == null) {
+                        throw new InvalidOperationException("Could not determine the binary file format");
+                    }
+                    if (!stream.Images.Any()) {
+                        throw new InvalidOperationException("Could not find any binary images in the file");
+                    }
+
+                    // Multi-image binaries may contain more than one Il2Cpp image
+                    Il2CppImages.Clear();
+                    foreach (var image in stream.Images) {
+                        // Architecture-agnostic load attempt
+                        try {
+                            // If we can't load the IL2CPP data here, it's probably packed or obfuscated; ignore it
+                            if (Il2CppBinary.Load(image, metadata.Version) is Il2CppBinary binary) {
+                                Il2CppImages.Add(new Inspector(binary, metadata));
+                            }
+                        }
+                        // Unsupported architecture; ignore it
+                        catch (NotImplementedException) { }
+                    }
+                    if (!Il2CppImages.Any()) {
+                        throw new InvalidOperationException("Could not auto-detect any IL2CPP binary images in the file");
+                    }
                     return true;
                 }
                 catch (Exception ex) {