Your IP : 216.73.216.218
<?php
/**
* @package RSFirewall!
* @copyright (c) 2009 - 2020 RSJoomla!
* @link https://www.rsjoomla.com
* @license GNU General Public License http://www.gnu.org/licenses/gpl-3.0.en.html
*/
defined('_JEXEC') or die('Restricted access');
class RSFirewallIPv4 extends RSFirewallIPBase implements RSFirewallIPInterface
{
// Tests if supplied IP address is IPv4.
public static function test($ip) {
if (defined('FILTER_VALIDATE_IP') && defined('FILTER_FLAG_IPV4')) {
return filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
} else {
return (strpos($ip, '.') !== false && strpos($ip, ':') === false);
}
}
// Provides an unpacking method for IPv4
public function toUnpacked() {
$unpacked = unpack('A4', $this->toPacked());
if (!isset($unpacked[1])) {
throw new Exception(JText::sprintf('COM_RSFIREWALL_COULD_NOT_UNPACK_IP', $this->ip));
}
return $unpacked[1];
}
// Provides a variable that can be used with comparison operators.
// IPv4 uses float.
public function toComparable() {
return $this->toLong();
}
// Provides numeric representation (float) of IPv4 address.
public function toLong() {
$long = ip2long($this->ip);
if ($long === false) {
throw new Exception(JText::sprintf('COM_RSFIREWALL_COULD_NOT_CONVERT_TO_LONG', $this->ip));
}
return (float) sprintf('%u', $long);
}
// Makes sure mask is valid.
public function cleanMask($mask) {
if (strpos($mask, '.') !== false) {
// We have a /255.255.255.0 notation
$maskIP = new RSFirewallIP($mask);
$baseIP = new RSFirewallIP('255.255.255.255');
$long = $maskIP->toLong();
$base = $baseIP->toLong();
$mask = 32 - log(($long ^ $base) + 1, 2);
}
$mask = (int) $mask;
if ($mask > 32 || $mask < 1) {
throw new Exception(JText::sprintf('COM_RSFIREWALL_NETWORK_MASK_OUTSIDE_RANGE', $mask, '1-32'));
}
return $mask;
}
protected function inet_pton($address) {
$parts = explode('.', $address);
if (count($parts) != 4) {
return false;
}
return chr((int) $parts[0]).chr((int) $parts[1]).chr((int) $parts[2]).chr((int) $parts[3]);
}
}