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 RSFirewallIPv6 extends RSFirewallIPBase implements RSFirewallIPInterface
{
// Tests if supplied IP address is IPv6.
public static function test($ip) {
if (defined('FILTER_VALIDATE_IP') && defined('FILTER_FLAG_IPV6')) {
return filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
} else {
return (strpos($ip, ':') !== false);
}
}
// Provides an unpacking method for IPv6
public function toUnpacked() {
$unpacked = unpack('A16', $this->toPacked());
if (!isset($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.
// IPv6 uses in_addr for string comparison.
public function toComparable() {
return $this->toPacked();
}
// Makes sure mask is valid.
public function cleanMask($mask) {
$mask = (int) $mask;
if ($mask > 128 || $mask < 1) {
throw new Exception(JText::sprintf('COM_RSFIREWALL_NETWORK_MASK_OUTSIDE_RANGE', $mask, '1-128'));
}
return $mask;
}
protected function inet_pton($address) {
// Create an array with the delimited substrings
$r = explode(':', $address);
// Count the number of items
$rcount = count($r);
// If we have empty items, fetch the position of the first one
if (($doub = array_search('', $r, 1)) !== false) {
// We fill a $length variable with this rule:
// - If it's the first or last item ---> 2
// - Otherwhise ---> 1
$length = (!$doub || $doub == $rcount - 1 ? 2 : 1);
// Remove a portion of the array and replace it with something else
array_splice($r,
// We skip items before the empty one
$doub,
// We remove one or two items
$length,
// We replace each removed value with zeros
array_fill(0, 8 + $length - $rcount, 0)
);
}
// We convert each item from hexadecimal to decimal
$r = array_map('hexdec', $r);
// We add 'n*' at the beginning of the array (just a trick to use pack on all the items)
array_unshift($r, 'n*');
// We pack all the items as unsigned shorts (always 16 bit, big endian byte order)
$r = call_user_func_array('pack', $r);
// Return the resulting string
return $r;
}
}