/**
* {@inheritdoc}
*/
public function checkVisitor(Visitor $visitor)
{
$ip = $visitor->getIP();
$revip = Utils::isIPv6($ip) ? $this->getIPv6Arpa($ip) : $this->getIPv4Arpa($ip);
foreach ($this->lists as $list) {
if (checkdnsrr("{$revip}.{$list}.", 'A')) {
return CheckInterface::RESULT_BLOCK;
}
}
return CheckInterface::RESULT_OKAY;
}
/**
* Analyzes user agents claiming to be Baidu Spider.
*
* @param \FlameCore\Gatekeeper\Visitor $visitor The visitor information
* @return int
* @throws \FlameCore\Gatekeeper\Exceptions\StopScreeningException
*/
protected function checkBaiduBot(Visitor $visitor)
{
if (Utils::isIPv6($visitor->getIP())) {
return CheckInterface::RESULT_OKAY;
}
if (Utils::matchCIDR($visitor->getIP(), ['119.63.192.0/21', '123.125.71.0/24', '180.76.0.0/16', '220.181.0.0/16'])) {
throw new StopScreeningException();
}
return CheckInterface::RESULT_UNSURE;
}
/**
* {@inheritdoc}
*/
public function checkVisitor(Visitor $visitor)
{
$ip = $visitor->getIP();
// Can't use IPv6 addresses yet
if (Utils::isIPv6($ip)) {
return CheckInterface::RESULT_OKAY;
}
$revip = $this->getIPv4Arpa($ip);
$result = gethostbynamel("{$this->apiKey}.{$revip}.dnsbl.httpbl.org.");
if (!empty($result)) {
$resip = explode('.', $result[0]);
if ($resip[0] == 127 && $resip[3] & 7 && $resip[2] >= $this->threatLevel && $resip[1] <= $this->maxAge) {
return CheckInterface::RESULT_BLOCK;
}
}
return CheckInterface::RESULT_OKAY;
}