//public byte[] extraField;
//public byte[] comment;
public static PakCentralDirFile Read(BinaryReader br)
{
var result = new PakCentralDirFile();
result.signature1 = br.ReadUInt16();
result.signature2 = br.ReadUInt16();
result.createVersion = br.ReadUInt16();
result.extractVersion = br.ReadUInt16();
result.flags = br.ReadUInt16();
result.compressionMethod = br.ReadUInt16();
result.time = br.ReadUInt16();
result.date = br.ReadUInt16();
result.crc = br.ReadUInt32();
result.compressedSize = br.ReadUInt32();
result.uncompressedSize = br.ReadUInt32();
result.filenameLength = br.ReadUInt16();
result.extraFieldLength = br.ReadUInt16();
result.fileCommentLength = br.ReadUInt16();
result.diskNumStart = br.ReadUInt16();
result.internalFileAttr = br.ReadUInt16();
result.externalFileAttr = br.ReadUInt32();
result.localHeaderOffset = br.ReadUInt32();
result.filename = PakUtil.ReadFilename(br, result.filenameLength);
if (result.signature1 == PakConstants.PAK_SIGNATURE1 &&
result.signature2 == PakConstants.PAK_SIGNATURE2_DIR)
{
result.isAionFormat = true;
}
else
{
if (result.signature1 != PakConstants.ZIP_SIGNATURE1 ||
result.signature2 != PakConstants.ZIP_SIGNATURE2_DIR)
{
throw new InvalidOperationException("bad central dir signature");
}
// zipformat = true
}
if (result.extraFieldLength != 0)
{
var b = br.ReadBytes(result.extraFieldLength);
// throw new InvalidOperationException("extra field not supported");
}
if (result.fileCommentLength != 0)
{
throw new InvalidOperationException("file comment not supported");
}
if (result.diskNumStart != 0)
{
throw new InvalidOperationException("disk num not supported");
}
return(result);
}
public EncryptedAionPakReader(Stream stream, PakCentralDirFile dirfile)
{
m_underlying = stream;
m_startPosition = stream.Position;
m_dirfile = dirfile;
if (!dirfile.isAionFormat)
{
throw new InvalidOperationException("zip stream is not encrypted!");
}
}