private static void ReadModule(DocumentInputStream dis, String name, ModuleMap modules)
{
Module module = modules.Get(name);
// TODO Refactor this to fetch dir then do the rest
if (module == null)
{
// no DIR stream with offsets yet, so store the compressed bytes for later
module = new Module();
modules.Put(name, module);
module.Read(dis);
}
else
{
if (module.offset == null)
{
//This should not happen. bug 59858
throw new IOException("Module offset for '" + name + "' was never Read.");
}
// we know the offset already, so decompress immediately on-the-fly
long skippedBytes = dis.Skip(module.offset.Value);
if (skippedBytes != module.offset)
{
throw new IOException("tried to skip " + module.offset + " bytes, but actually skipped " + skippedBytes + " bytes");
}
InputStream stream = new RLEDecompressingInputStream(dis);
module.Read(stream);
stream.Close();
}
}
private byte[] NextChunk()
{
int index = (int)(_pos >> 12);
byte[] blockKey = new byte[4];
LittleEndian.PutInt(blockKey, 0, index);
byte[] iv = _ag.GenerateIv(_ag.Info.Header.Algorithm,
_ag.Info.Header.KeySalt, blockKey);
//_cipher.Mode = CipherMode.
_cipher.Key = _ag.SecretKey;
_cipher.IV = iv;
if (_lastIndex != index)
{
_stream.Skip((index - _lastIndex) << 12);
}
byte[] block = new byte[Math.Min(_stream.Available(), 4096)];
_stream.ReadFully(block);
_lastIndex = index + 1;
throw new NotImplementedException();
//return _cipher.doFinal(block); Leon
}
