note 108812 modified in function.ip2long by danbrown
| From: | danbrown@php.net | Date: | Sat, 26 May 2012 15:25:55 +0000 |
| Subject: | note 108812 modified in function.ip2long by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-188251@lists.php.net to get a copy of this message | ||
Hi, based on examples above I have mixed class IPFilter with netMatch function wich
gives me complete class for IP4 check including CIDR IP
format: <?php 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);
} } ?> For
me
this code works great, so I wanna thank to all You guys!!!
--was--
Hi,
based on examples above I have mixed class IPFilter with netMatch function wich gives me complete
class for IP4 check including CIDR IP format:
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);
}
}
For me this code works great, so I wanna thank to all You guys!!!
http://php.net/manual/en/function.ip2long.php