Imbo\EventListener\AccessToken::isWhitelisted PHP Méthode

    private function isWhitelisted(Request $request)
    {
        $filter = $this->params['transformations'];
        if (empty($filter['whitelist']) && empty($filter['blacklist'])) {
            // No filter has been configured
            return false;
        }
        // Fetch transformations from the request
        $transformations = $request->getTransformations();
        if (empty($transformations)) {
            // No transformations are present in the request, no need to check
            return false;
        }
        $whitelist = array_flip($filter['whitelist']);
        $blacklist = array_flip($filter['blacklist']);
        foreach ($transformations as $transformation) {
            if (isset($blacklist[$transformation['name']])) {
                // Transformation is explicitly blacklisted
                return false;
            }
            if (!empty($whitelist) && !isset($whitelist[$transformation['name']])) {
                // We have a whitelist, but the transformation is not listed in it, so we must deny
                // the request
                return false;
            }
        }
        // All transformations in the request are whitelisted
        return true;
    }