ELF: Tidy up LoadOptions and handling of dumped files

Il2CppInspector.CLI/Program.cs

@@ -139,9 +139,13 @@ namespace Il2CppInspector.CLI
                 return 1;
             }
 
-            // Check image base
-            var loadOptions = new LoadOptions();
+            // Set load options
+            var loadOptions = new LoadOptions {
+                ImageBase = 0xffffffff_ffffffff,
+                BinaryFilePath = options.BinaryFiles.First()
+            };
 
+            // Check image base
             if (!string.IsNullOrEmpty(options.ElfImageBaseString)) {
                 try {
                     loadOptions.ImageBase = Convert.ToUInt64(options.ElfImageBaseString, 16);

Il2CppInspector.Common/FileFormatReaders/ElfReader.cs

@@ -188,7 +188,7 @@ namespace Il2CppInspector
                 if (!shtShouldBeOrdered.Any()) {
 
                     // If the first file offset of the first PHT is zero, assume a dumped image
-                    if (conv.ULong(program_header_table[0].p_vaddr) == 0ul) {
+                    if (program_header_table.Any(t => conv.ULong(t.p_vaddr) == 0ul)) {
                         Console.WriteLine("ELF binary appears to be a dumped memory image");
                         isMemoryImage = true;
                     }
@@ -207,10 +207,10 @@ namespace Il2CppInspector
 
             // Dumped images must be rebased
             if (isMemoryImage) {
-                if (!(LoadOptions?.ImageBase is ulong newImageBase))
+                if (LoadOptions.ImageBase == 0xffffffff_ffffffff)
                     throw new InvalidOperationException("To load a dumped ELF image, you must specify the image base virtual address");
 
-                rebase(conv.FromULong(newImageBase));
+                rebase(conv.FromULong(LoadOptions.ImageBase));
             }
             
             // Get dynamic table if it exists (must be done after rebasing)
@@ -667,7 +667,8 @@ namespace Il2CppInspector
         public override uint[] GetFunctionTable() {
             // INIT_ARRAY contains a list of pointers to initialization functions (not all functions in the binary)
             // INIT_ARRAYSZ contains the size of INIT_ARRAY
-            if (getDynamic(Elf.DT_INIT_ARRAY) == null || getDynamic(Elf.DT_INIT_ARRAYSZ) == null)
+            // INIT_ARRAY is probably broken in dumped images and resaved dumped images
+            if (getDynamic(Elf.DT_INIT_ARRAY) == null || getDynamic(Elf.DT_INIT_ARRAYSZ) == null || isMemoryImage)
                 return Array.Empty<uint>();
 
             var init = MapVATR(conv.ULong(getDynamic(Elf.DT_INIT_ARRAY).d_un));

Il2CppInspector.Common/FileFormatReaders/LoadOptions.cs

@@ -10,6 +10,10 @@ namespace Il2CppInspector
     public class LoadOptions
     {
         // For dumped ELF files, the virtual address to which we should rebase - ignored for other file types
-        public ulong? ImageBase { get; set; }
+        // Use 2^64-1 to prevent rebasing on a dumped file
+        public ulong ImageBase { get; set; }
+
+        // For Linux process memory map inputs, we need the full path so we can find the .bin files
+        public string BinaryFilePath { get; set; }
     }
 }

Il2CppInspector.GUI/App.xaml.cs

@@ -34,7 +34,7 @@ namespace Il2CppInspectorGUI
             }
         }
 
-        public LoadOptions LoadOptions { get; private set; } = null;
+        public LoadOptions LoadOptions { get; private set; }
 
         public List<AppModel> AppModels { get; } = new List<AppModel>();
 
@@ -45,9 +45,15 @@ namespace Il2CppInspectorGUI
 
         private void StatusUpdate(object sender, string status) => OnStatusUpdate?.Invoke(sender, status);
 
+        // Initialization entry point
+        protected override void OnStartup(StartupEventArgs e) {
+            ResetLoadOptions();
+        }
+
         public void ResetLoadOptions() {
             LoadOptions = new LoadOptions {
-                ImageBase = 0ul
+                ImageBase = 0xffffffff_ffffffff,
+                BinaryFilePath = null
             };
         }
 
@@ -94,6 +100,9 @@ namespace Il2CppInspectorGUI
 
         // Attempt to load an IL2CPP binary file
         public async Task<bool> LoadBinaryAsync(string binaryFile) {
+            // For loaders which require the file path to find additional files
+            LoadOptions.BinaryFilePath = binaryFile;
+
             var stream = new MemoryStream(await File.ReadAllBytesAsync(binaryFile));
             return await LoadBinaryAsync(stream);
         }

Il2CppInspector.GUI/HexStringValueConverter.cs

@@ -20,7 +20,7 @@ namespace Il2CppInspector.GUI
         }
 
         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
-            if (value == null || targetType != typeof(ulong?))
+            if (value == null || targetType != typeof(ulong))
                 return DependencyProperty.UnsetValue;
 
             try {

Il2CppInspector.GUI/LoadOptionsDialog.xaml.cs

@@ -25,9 +25,6 @@ namespace Il2CppInspector.GUI
             InitializeComponent();
 
             var app = (App) Application.Current;
-            if (app.LoadOptions == null)
-                app.ResetLoadOptions();
-
             DataContext = app.LoadOptions;
         }