whistelisting.js

function getException(page, url, typeMask, docDomain, sitekey)
{
  let thirdParty = !!docDomain && isThirdParty(url, docDomain);
  let urlString = stringifyURL(url);

  if (!docDomain)
    docDomain = getDecodedHostname(url);

  let filter = defaultMatcher.whitelist.matchesAny(
    urlString, typeMask, docDomain, thirdParty, sitekey
  );

  if (filter && devtools)
    devtools.logWhitelisted(page, urlString, typeMask, docDomain, filter);

  return filter;
}

exports.getDocumentException = function(page, frame, typeMask)
{
  if (typeof typeMask == "undefined")
    typeMask = RegExpFilter.typeMap.DOCUMENT;

  if (frame)
  {
    let exception = null;

    while (frame && !exception)
    {
      let parent = frame.parent;
      let docDomain = extractHostFromFrame(parent);
      let sitekey = getKey(page, frame);

      exception = getException(page, frame.url, typeMask, docDomain, sitekey);
      frame = parent;
    }

    return exception;
  }

  return getException(page, page.url, typeMask);
};