// this stuff can generate a malformed .unity3d file that oblitarates your hard disk
public void OpenNew()
{
var filesPath = GetFiles(Path.GetDirectoryName(FilePath));
var files = new WebArchiveFile[filesPath.Length];
var headerSize = 5; //int32
//read files
for (int i = 0; i < filesPath.Length; i++)
{
files[i] = new WebArchiveFile();
files[i].Name = Path.GetFileName(filesPath[i]);
files[i].Bytes = File.ReadAllBytes(filesPath[i]);
files[i].Size = files[i].Bytes.Length;
headerSize += files[i].Name.Length + 9;
}
files[0].Offset = headerSize;
for (int i = 1; i < files.Length; i++)
files[i].Offset = files[i - 1].Offset + files[i - 1].Size;
var uncompressedSize = headerSize;
for (int i = 0; i < files.Length; i++)
uncompressedSize += files[i].Bytes.Length;
Files = files;
UncompressedSize = uncompressedSize;
Opened = true;
}
public void Open()
{
var file = File.ReadAllBytes(FilePath);
var fileReader = new FileReader(file);
//read compressed header
var signature = fileReader.ReadString();
var buildVersion = fileReader.ReadInt32();
var webPlayerVersion = fileReader.ReadString();
var unityEngineVersion = fileReader.ReadString();
var compressedFileSize = fileReader.ReadInt32();
var compressedHeaderSize = fileReader.ReadInt32();
fileReader.SkipBytes(8);
var compressedBodySize = fileReader.ReadInt32();
var uncompressedSize = fileReader.ReadInt32();
var compressedFileSize2 = fileReader.ReadInt32();
var uncompressedHeaderSize = fileReader.ReadInt32();
if (fileReader.ReadByte() != 0x00) //end of header
throw new InvalidDataException(string.Format("Expected 0x00 at: {0}.", fileReader.Position.ToString("X2")));
fileReader.Position = compressedHeaderSize;
//read compressed body
var fileBody = fileReader.ReadByteArray(compressedBodySize);
var decompressedFile = LzmaUtils.Decompress(fileBody);
File.WriteAllBytes(@"C:\Users\Ramda_000\Documents\GitHub\Unity3D-Disassembler\Source\bin\Debug\decompressed.txt", decompressedFile);
//read decompressed header
fileReader = new FileReader(decompressedFile);
var files = new WebArchiveFile[fileReader.ReadInt32()];
for (int i = 0; i < files.Length; i++)
{
files[i] = new WebArchiveFile();
files[i].Name = fileReader.ReadString();
files[i].Offset = fileReader.ReadInt32();
files[i].Size = fileReader.ReadInt32();
}
//read decompressed body
for (int i = 0; i < files.Length; i++)
{
fileReader.Position = files[i].Offset;
files[i].Bytes = fileReader.ReadByteArray(files[i].Size);
}
Files = files;
CompressedSize = compressedFileSize;
UncompressedSize = uncompressedSize;
Opened = true;
}