apphost-extract/src/apphost-extract/apphost-extract-v2/Models/General/IApphostFile.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection.PortableExecutable;
using System.Text;

namespace apphost_extract_v2.General
{
    public abstract class IApphostFile
    {
        internal FileStream FileStream;
        public PEHeaders PEHeader;
        public AppHostFileHeader Header;

        public IApphostFile(FileStream fs, PEHeaders peheader)
        {
            FileStream = fs;
            PEHeader = peheader;
        }

        public void ExtractAll(string outputDir)
        {
            Directory.CreateDirectory(outputDir);
            foreach (var fileEntry in Header.Manifest.FileEntries)
            {
                try
                {
                    var bytes = FileStream.ReadBuffer(fileEntry.Offset, fileEntry.Size);
                    var name = fileEntry.Name;
                    var filePath = Path.Combine(outputDir, name);
                    File.WriteAllBytes(filePath, bytes);

                    Log.Critical($"Extracted {name}");

                }
                catch (Exception ex)
                {
                    Log.Error($"Could not extract {fileEntry.Name}: {ex.Message}");
                }

            }
        }

        public abstract void Close();
    }
}