public void IsHtml_DetectsNonHtmlInBuffer()
{
// Arrange
byte[] buffer = Encoding.ASCII.GetBytes("var j = 10;");
// Act
bool result = ContentTypeUtil.IsHtml("default.html", buffer, 0, buffer.Length);
// Assert
Assert.False(result);
}
public void IsHtml_DetectsHtmlInBuffer()
{
// Arrange
byte[] buffer = Encoding.ASCII.GetBytes("<html><head></head><body></body></html>");
// Act
bool result = ContentTypeUtil.IsHtml("default.html", buffer, 0, buffer.Length);
// Assert
Assert.True(result);
}
public void IsHtml_DetectsHtmlInBufferWithOffset()
{
// Arrange
byte[] buffer = Encoding.ASCII.GetBytes("<html><head></head><body></body></html>");
byte[] bufferWithLeadingBytes = new byte[100 + buffer.Length];
Array.Copy(buffer, 0, bufferWithLeadingBytes, 100, buffer.Length);
// Act
bool result = ContentTypeUtil.IsHtml("default.html", bufferWithLeadingBytes, 100, buffer.Length);
// Assert
Assert.True(result);
}
private void DetermineIfFilterShouldBePassthrough(byte[] buffer, int offset, int count)
{
string contentTypeFromHeader = _context.ResponseContentType;
string path = _context.RequestPath;
if (!ContentTypeUtil.IsSupportedContentTypes(contentTypeFromHeader))
{
CloseInjectScriptSocketAndBecomePassthrough();
}
else if (!ContentTypeUtil.IsHtml(path, buffer, offset, count))
{
CloseInjectScriptSocketAndBecomePassthrough();
}
}