public static XmlDocument GetDocument(this MemoryMappedFile m2dFile, IPackFileHeader header)
{
XmlDocument document = new XmlDocument();
document.Load(new MemoryStream(CryptoManager.DecryptData(header, m2dFile)));
return(document);
}
public static byte[] DecryptData(IPackFileHeader pHeader, MemoryMappedFile data)
{
if (pHeader.CompressedFileSize > 0 && pHeader.EncodedFileSize > 0 && pHeader.FileSize > 0)
{
using MemoryMappedViewStream buffer =
data.CreateViewStream((long)pHeader.Offset, pHeader.EncodedFileSize);
byte[] src = new byte[pHeader.EncodedFileSize];
if (buffer.Read(src, 0, (int)pHeader.EncodedFileSize) == pHeader.EncodedFileSize)
{
return(Decrypt(pHeader.Version, pHeader.EncodedFileSize,
(uint)pHeader.CompressedFileSize, pHeader.BufferFlag, src));
}
}
throw new Exception("ERROR decrypting data file segment: the size of the block is invalid.");
}
public static XmlReader GetReader(this MemoryMappedFile m2dFile, IPackFileHeader header)
{
return(XmlReader.Create(new MemoryStream(CryptoManager.DecryptData(header, m2dFile))));
}
