/**
* The public use of this function is undocumented.
*
* @param string $url
* @param string $entity
*
* @return bool
*/
public static function isUrlOnBlocklist($url, $entity = 'url')
{
$rootDomain = Domainparser::getRootDomain($url);
if ($rootDomain === false) {
self::$reason = "Not blocking because we couldn't parse root domain";
return false;
}
$blocklist = self::getConcatenateBlocklist();
if (substr_count($blocklist, self::SEPERATOR . $rootDomain . self::SEPERATOR)) {
self::$reason = 'Blocking because ' . $entity . ' root domain (' . $rootDomain . ') is found on blocklist';
return true;
}
$hostname = Domainparser::getHostname($url);
if (substr_count($blocklist, self::SEPERATOR . $hostname . self::SEPERATOR)) {
self::$reason = 'Blocking because ' . $entity . ' hostname (' . $hostname . ') is found on blocklist';
return true;
}
$path = Domainparser::getPath($url);
if (trim($path, '/')) {
if (substr_count($blocklist, self::SEPERATOR . $rootDomain . $path . self::SEPERATOR)) {
self::$reason = 'Blocking because ' . $entity . ' root domain/path (' . $rootDomain . $path . ') is found on blocklist';
return true;
}
if (substr_count($blocklist, self::SEPERATOR . $hostname . $path . self::SEPERATOR)) {
self::$reason = 'Blocking because ' . $entity . ' hostname/path (' . $hostname . $path . ') is found on blocklist';
return true;
}
}
self::$reason = 'Not blocking because ' . $entity . ' (' . $url . ') is not matched against blocklist';
return false;
}
/**
* @return bool
*/
private static function isRefererOnBlocklist()
{
$referer = self::getHttpReferer();
if ($referer === null) {
self::$debug = "Not blocking because referral header is not set or empty";
return false;
}
$rootDomain = Domainparser::getRootDomain($referer);
if ($rootDomain === false) {
self::$debug = "Not blocking because we couldn't parse referral domain";
return false;
}
if (substr_count(self::getConcatenateBlocklist(), self::SEPERATOR . $rootDomain . self::SEPERATOR) === 0) {
self::$debug = "Not blocking because referral domain (" . $rootDomain . ") is not found on blocklist";
return false;
}
self::$debug = "Blocking because referral domain (" . $rootDomain . ") is found on blocklist";
return true;
}
/**
* Extracts root domain from URL if it is available and not empty, returns false otherwise
*
* @param string $url
* @return string|bool
*/
private static function getRootDomain($url)
{
$urlParts = Domainparser::parseUrl($url);
return isset($urlParts['topleveldomain']) && !empty($urlParts['topleveldomain']) ? $urlParts['topleveldomain'] : false;
}
