/// <summary>
/// Using the image of the program under investigation, find an
/// unpacker capable of unpacking it, and returns a new <see cref="ImageLoader"/>
/// instance.
/// </summary>
/// <param name="loader">Raw image loader.</param>
/// <param name="entryPointOffset">Offset of the program entry point.</param>
/// <returns>If an unpacker was found, returns a new wrapping ImageLoader. Otherwise
/// the original loader is returned.</returns>
public ProgramImageLoader FindUnpackerBySignature(ProgramImageLoader loader, uint entryPointOffset)
{
var listener = Services.RequireService <DecompilerEventListener>();
// $TODO: the code below triggers the creation of the suffix array
// The suffix array is currently unused but the algorithm that generates it scales poorly
// making Reko unable to load certain EXE files (due to the endless wait times)
// EnsureSuffixArray(filename + ".sufa-raw.ubj", image);
var signature = Signatures.Where(s => Matches(s, loader.RawImage, entryPointOffset)).FirstOrDefault();
if (signature == null || signature.Name == null)
{
return(loader);
}
listener.Info("Signature of '{0}' detected.", signature.Name);
var le = Services.RequireService <IConfigurationService>().GetImageLoader(signature.Name); //$REVIEW: all of themn?
if (le == null || le.TypeName == null)
{
return(loader);
}
var unpacker = Loader.CreateOuterImageLoader <ProgramImageLoader>(Services, le.TypeName, loader);
if (unpacker == null)
{
listener.Warn("Unable to create loader for '{0}'.", signature.Name);
return(loader);
}
listener.Info("Using loader for '{0}'.", signature.Name);
unpacker.Argument = le.Argument;
return(unpacker);
}
public OdbgScriptLoader(ProgramImageLoader imageLoader)
: base(imageLoader.Services, imageLoader.ImageLocation, imageLoader.RawImage)
{
this.originalImageLoader = imageLoader;
this.Architecture = null !;
this.debugger = null !;
this.scriptInterpreter = null !;
this.ImageMap = null !;
this.OriginalEntryPoint = null !;
}
