Файл: engine/classes/ipfilter.class.php
Строк: 68
<?php
/**
* На основе приведенных выше примеров я смешанного класса IPFilter
* с netMatch функции Wich дает мне
* полную класс для IP4 проверки в том числе формате CIDR IP:
*
* @package Classes
* @author Shamsik
* @link http://shcms.ru
*/
class IP4Filter {
private static $_IP_TYPE_SINGLE = 'single';
private static $_IP_TYPE_WILDCARD = 'wildcard';
private static $_IP_TYPE_MASK = 'mask';
private static $_IP_TYPE_CIDR = 'CIDR';
private static $_IP_TYPE_SECTION = 'section';
private $_allowed_ips = array();
public function __construct($allowed_ips) {
$this->_allowed_ips = $allowed_ips;
}
public function check($ip, $allowed_ips = null) {
$allowed_ips = $allowed_ips ? $allowed_ips : $this->_allowed_ips;
foreach ($allowed_ips as $allowed_ip) {
$type = $this->_judge_ip_type($allowed_ip);
$sub_rst = call_user_func(array($this, '_sub_checker_' . $type), $allowed_ip, $ip);
if ($sub_rst) {
return true;
}
}
return false;
}
private function _judge_ip_type($ip) {
if (strpos($ip, '*')) {
return self :: $_IP_TYPE_WILDCARD;
}
if (strpos($ip, '/')) {
$tmp = explode('/', $ip);
if (strpos($tmp[1], '.')) {
return self :: $_IP_TYPE_MASK;
} else {
return self :: $_IP_TYPE_CIDR;
}
}
if (strpos($ip, '-')) {
return self :: $_IP_TYPE_SECTION;
}
if (ip2long($ip)) {
return self :: $_IP_TYPE_SINGLE;
}
return false;
}
private function _sub_checker_single($allowed_ip, $ip) {
return (ip2long($allowed_ip) == ip2long($ip));
}
private function _sub_checker_wildcard($allowed_ip, $ip) {
$allowed_ip_arr = explode('.', $allowed_ip);
$ip_arr = explode('.', $ip);
for ($i = 0; $i < count($allowed_ip_arr); $i++) {
if ($allowed_ip_arr[$i] == '*') {
return true;
} else {
if (false == ($allowed_ip_arr[$i] == $ip_arr[$i])) {
return false;
}
}
}
}
private function _sub_checker_mask($allowed_ip, $ip) {
list($allowed_ip_ip, $allowed_ip_mask) = explode('/', $allowed_ip);
$begin = (ip2long($allowed_ip_ip) & ip2long($allowed_ip_mask)) + 1;
$end = (ip2long($allowed_ip_ip) | (~ ip2long($allowed_ip_mask))) + 1;
$ip = ip2long($ip);
return ($ip >= $begin && $ip <= $end);
}
private function _sub_checker_section($allowed_ip, $ip) {
list($begin, $end) = explode('-', $allowed_ip);
$begin = ip2long($begin);
$end = ip2long($end);
$ip = ip2long($ip);
return ($ip >= $begin && $ip <= $end);
}
private function _sub_checker_CIDR($CIDR, $IP) {
list ($net, $mask) = explode('/', $CIDR);
return ( ip2long($IP) & ~((1 << (32 - $mask)) - 1) ) == ip2long($net);
}
}