/**
* Added compatibility for hosts that do not have inet_pton.
*
* @param $ip
* @return bool|string
*/
public static function _inet_pton($ip)
{
// IPv4
if (preg_match('/^(?:\\d{1,3}(?:\\.|$)){4}/', $ip)) {
$octets = explode('.', $ip);
$bin = chr($octets[0]) . chr($octets[1]) . chr($octets[2]) . chr($octets[3]);
return $bin;
}
// IPv6
if (preg_match('/^((?:[\\da-f]{1,4}(?::|)){0,8})(::)?((?:[\\da-f]{1,4}(?::|)){0,8})$/i', $ip)) {
if ($ip === '::') {
return "";
}
$colon_count = wfWAFUtils::substr_count($ip, ':');
$dbl_colon_pos = wfWAFUtils::strpos($ip, '::');
if ($dbl_colon_pos !== false) {
$ip = str_replace('::', str_repeat(':0000', ($dbl_colon_pos === 0 || $dbl_colon_pos === wfWAFUtils::strlen($ip) - 2 ? 9 : 8) - $colon_count) . ':', $ip);
$ip = trim($ip, ':');
}
$ip_groups = explode(':', $ip);
$ipv6_bin = '';
foreach ($ip_groups as $ip_group) {
$ipv6_bin .= pack('H*', str_pad($ip_group, 4, '0', STR_PAD_LEFT));
}
return wfWAFUtils::strlen($ipv6_bin) === 16 ? $ipv6_bin : false;
}
// IPv4 mapped IPv6
if (preg_match('/^((?:0{1,4}(?::|)){0,5})(::)?ffff:((?:\\d{1,3}(?:\\.|$)){4})$/i', $ip, $matches)) {
$octets = explode('.', $matches[3]);
return "ÿÿ" . chr($octets[0]) . chr($octets[1]) . chr($octets[2]) . chr($octets[3]);
}
return false;
}
public function containsCount($subject)
{
if (is_array($this->getExpected())) {
$this->multiplier = 0;
foreach ($this->getExpected() as $val) {
if ($val == $subject) {
$this->multiplier++;
}
}
return $this->multiplier > 0;
}
$this->multiplier = wfWAFUtils::substr_count($subject, $this->getExpected());
return $this->multiplier > 0;
}
/**
* The current line of the scanned string.
*
* @return int
*/
public function getLine()
{
if ($this->getPointer() + 1 > $this->getLength()) {
return wfWAFUtils::substr_count($this->getString(), "\n") + 1;
}
return wfWAFUtils::substr_count($this->getString(), "\n", 0, $this->getPointer() + 1) + 1;
}