public bool Open(string filename)
{
Header = new Header(this);
TOC = new TOC(this);
_filename = filename;
bool encrypted = false;
_stream = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
var br = new BinaryReader(_stream);
byte[] headerData = br.ReadBytes(0x14);
if (BitConverter.ToUInt32(headerData, 0) != Header.MagicId)
{
encrypted = true;
}
if (encrypted)
{
headerData = DataUtil.Decrypt(headerData);
}
var headerMS = new MemoryStream(headerData);
Header.Read(new BinaryReader(headerMS));
headerMS.Close();
if (Header.Identifier != Header.MagicId || Header.Version != Header.SupportedVersion)
{
_stream.Close();
return(false);
}
byte[] tocData = br.ReadBytes(Header.TocSize);
if (encrypted)
{
tocData = DataUtil.Decrypt(tocData);
}
var tocMS = new MemoryStream(tocData);
TOC.Read(new BinaryReader(tocMS));
tocMS.Close();
return(true);
}