public override Stream OpenEntry(ArcFile arc, Entry entry)
{
if (entry.Name.HasAnyOfExtensions("TXT", "DAT"))
{
var input = arc.File.CreateStream(entry.Offset, entry.Size);
var dec = new DesTransform(DefaultKey);
return(new InputCryptoStream(input, dec));
}
else if (entry.Name.HasExtension("JPG"))
{
using (var dec = new DesTransform(DefaultKey))
{
var data = arc.File.View.ReadBytes(entry.Offset, entry.Size);
for (int i = 0; i < data.Length; i += 0x1000)
{
int count = Math.Min(8, data.Length - i);
dec.TransformBlock(data, i, count, data, i);
}
return(new BinMemoryStream(data, entry.Name));
}
}
else
{
return(base.OpenEntry(arc, entry));
}
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
if (entry.Name.HasAnyOfExtensions("TXT", "DAT"))
{
var input = arc.File.CreateStream(entry.Offset, entry.Size, entry.Name);
int first_byte = (int)input.Signature & 0xFF;
if (first_byte == '#' || first_byte == '*')
{
return(input);
}
var dec = new DesTransform(DefaultKey);
return(new InputCryptoStream(input, dec));
}
else if (entry.Name.HasExtension("JPG"))
{
using (var dec = new DesTransform(DefaultKey))
{
var data = arc.File.View.ReadBytes(entry.Offset, entry.Size);
for (int i = 0; i < data.Length; i += 0x1000)
{
int count = Math.Min(8, data.Length - i);
dec.TransformBlock(data, i, count, data, i);
}
return(new BinMemoryStream(data, entry.Name));
}
}
else if (entry.Name.HasExtension("BMP"))
{
var data = arc.File.View.ReadBytes(entry.Offset, entry.Size);
int bpp = data.ToUInt16(0x1C);
if (4 == bpp)
{
data[0x1C] = 8;
}
else if (16 == bpp)
{
data[0x1C] = 24;
}
int pixels_src = 0x36;
int pixels_length = data.Length - pixels_src;
if (pixels_length > 0x493AA)
{
using (var dec = new DesTransform(DefaultKey))
{
for (int src = pixels_src + 0x493AA; src + 8 <= data.Length; src += 0xA0)
{
dec.TransformBlock(data, src, 8, data, src);
}
}
}
return(new BinMemoryStream(data, entry.Name));
}
else
{
return(base.OpenEntry(arc, entry));
}
}
