public static ThresholdInputStream AddThreshold(Stream zipIS)
{
ThresholdInputStream newInner = null;
if (zipIS is InflaterInputStream)
{
//replace inner stream of zipIS by using a ThresholdInputStream instance??
try
{
FieldInfo f = typeof(FilterInputStream).GetField("in");
//f.SetAccessible(true);
//InputStream oldInner = (InputStream)f.Get(zipIS);
//newInner = new ThresholdInputStream(oldInner, null);
//f.Set(zipIS, newInner);
} catch (Exception ex) {
//logger.Log(POILogger.WARN, "SecurityManager doesn't allow manipulation via reflection for zipbomb detection - continue with original input stream", ex);
newInner = null;
}
}
else
{
// the inner stream is a ZipFileInputStream, i.e. the data wasn't compressed
newInner = null;
}
return(new ThresholdInputStream(zipIS, newInner));
}
public ThresholdInputStream(Stream is1, ThresholdInputStream cis)
{
this.input = is1;
this.cis = cis;
}
