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<?php
##
## this file name is 'class.ipv4.php'
##
## check korean ip address(ipv4) or ip network
##
## [author]
## - Chilbong Kim, <san2(at)linuxchannel.net>
## - http://linuxchannel.net/
##
## [changes]
## - 2004.01.29 : bug fixed, bit &
## - 2003.09.30 : re-checked by whois.apnic.net
## - 2003.09.29 : add more and ...
## - 2003.09.28 : new build
##
## [reference]
## - http://irms.nic.or.kr/servlet/member.view.ISPIpAddress
## (check date: 20030530)
##
## [usage]
## - integer ipv4::iskrip(ipv4 ipaddr) // check korean ip address
## - string ipv4::network(ipv4 ipaddr) // get korean ip-network
##
## [example]
##
## echo ipv4::iskrip('192.168.10.3'); // 2
## echo ipv4::iskrip(gethostbyname('www.linuxchannel.net')); // 1
## echo ipv4::iskrip($_SERVER['REMOTE_ADDR']); // FALSE or 1 or 2
##
## echo ipv4::network('192.168.10.3'); // 192.168.0.0/255.255.0.0
## echo ipv4::network('192.100.10.3'); // 192.0.0.0/255.0.0.0
## echo ipv4::network($_SERVER['REMOTE_ADDR']); // FALSE or some string
##
class ipv4
{
## check korean ip address
##
## [usage]
## - integer ipv4::iskrip(ipv4 ipaddr)
##
## [return]
## - 0 or FALSE : is not a korean ip address
## - 1 or TRUE : is a korean ip address
## - 2 or TRUE : is an internal ip address
##
## [example]
## echo ipv4::iskrip('192.168.10.3'); // 2
## echo ipv4::iskrip(gethostbyname('www.linuxchannel.net')); // 1
## echo ipv4::iskrip($_SERVER['REMOTE_ADDR']); // FALSE or 1 or 2
##
function &iskrip($ipaddr)
{
if(ipv4::getnetwork($ipaddr,'internal')) return 2;
else if(ipv4::getnetwork($ipaddr,'korean')) return 1;
else return FALSE;
}
## get korean ip network for an ip address
##
## [usage]
## - string ipv4::network(ipv4 ipaddr)
##
## [example]
## echo ipv4::network('192.168.10.3'); // 192.168.0.0/255.255.0.0
## echo ipv4::network('192.100.10.3'); // 192.0.0.0/255.0.0.0
## echo ipv4::network($_SERVER['REMOTE_ADDR']); // FALSE or some string
##
function &network($ipaddr)
{
if(!$network = ipv4::getnetwork($ipaddr,'internal'))
{ $network = ipv4::getnetwork($ipaddr,'korean'); }
return $network;
}
## inside function
##
function &getnetwork($ipaddr, $bkey='korean')
{
## convert to binaray
##
$ipb = sprintf('%032b',ip2long($ipaddr));
$krnetwork = ipv4::krnetwork($bkey);
## get netmasks for internal ip address
##
$netmasks = array_values(array_unique($krnetwork));
$size = sizeof($netmasks);
## get network
##
for($i=0; $i<$size; $i++)
{
$mask = sprintf('%032b',ip2long($netmasks[$i]));
$network = long2ip(bindec($ipb & $mask)); // is a network address
if($netmask = $krnetwork[$network])
{
return $network.'/'.$netmask; // string
break;
}
}
//return ipv4::network($ipaddr,'korean'); // call by self
return FALSE; // is not an korean ip address
}
## inside function
##
function &krnetwork($key='korean')
{
$ipv4['internal'] = array
(
'10.0.0.0' =>'255.0.0.0', '127.0.0.0' =>'255.0.0.0',
'172.16.0.0'=>'255.240.0.0', '192.168.0.0'=>'255.255.0.0',
);
$ipv4['korean'] = array
(
'129.254.0.0' =>'255.255.0.0', '141.223.0.0' =>'255.255.0.0',
'147.6.0.0' =>'255.255.0.0', '147.43.0.0' =>'255.255.0.0',
'147.46.0.0' =>'255.255.0.0', '146.47.0.0' =>'255.255.0.0',
'150.150.0.0' =>'255.255.0.0', '150.183.0.0' =>'255.255.0.0',
'150.197.0.0' =>'255.255.0.0', '152.10.0.0' =>'255.255.0.0',
'158.44.0.0' =>'255.255.0.0', '163.152.0.0' =>'255.255.0.0',
'163.180.0.0' =>'255.255.0.0', '163.239.0.0' =>'255.255.0.0',
'164.124.0.0' =>'255.255.0.0', '164.125.0.0' =>'255.255.0.0',
'165.132.0.0' =>'255.255.0.0', '165.133.0.0' =>'255.255.0.0',
'165.141.0.0' =>'255.255.0.0', '165.186.0.0' =>'255.255.0.0',
'165.194.0.0' =>'255.255.0.0', '165.213.0.0' =>'255.255.0.0',
'165.229.0.0' =>'255.255.0.0', '165.243.0.0' =>'255.255.0.0',
'165.244.0.0' =>'255.255.0.0', '165.246.0.0' =>'255.255.0.0',
'166.79.0.0' =>'255.255.0.0', '166.103.0.0' =>'255.255.0.0',
'166.104.0.0' =>'255.255.0.0', '166.125.0.0' =>'255.255.0.0',
'168.78.0.0' =>'255.255.0.0', '168.115.0.0' =>'255.255.0.0',
'168.126.0.0' =>'255.255.0.0', '168.131.0.0' =>'255.255.0.0',
'168.154.0.0' =>'255.255.0.0', '168.188.0.0' =>'255.255.0.0',
'168.219.0.0' =>'255.255.0.0', '202.6.95.0' =>'255.255.255.0',
'202.14.103.0'=>'255.255.255.0','202.14.165.0'=>'255.255.255.0',
'202.21.0.0' =>'255.255.248.0','202.20.82.0' =>'255.255.255.0',
'202.20.83.0' =>'255.255.255.0','202.20.84.0' =>'255.255.255.0',
'202.20.85.0' =>'255.255.255.0','202.20.86.0' =>'255.255.255.0',
'202.20.128.0'=>'255.255.128.0','202.20.99.0' =>'255.255.255.0',
'202.20.119.0'=>'255.255.255.0','202.30.0.0' =>'255.255.0.0',
'202.31.0.0' =>'255.255.0.0', '203.224.0.0' =>'255.224.0.0',
'210.90.0.0' =>'255.255.0.0', '210.91.0.0' =>'255.255.0.0',
'210.92.0.0' =>'255.252.0.0', '210.96.0.0' =>'255.224.0.0',
'210.178.0.0' =>'255.255.0.0', '210.179.0.0' =>'255.255.0.0',
'210.180.0.0' =>'255.252.0.0', '210.204.0.0' =>'255.252.0.0',
'210.216.0.0' =>'255.248.0.0', '211.32.0.0' =>'255.224.0.0',
'211.104.0.0' =>'255.248.0.0', '211.112.0.0' =>'255.248.0.0',
'211.168.0.0' =>'255.248.0.0', '211.176.0.0' =>'255.240.0.0',
'211.192.0.0' =>'255.192.0.0', '218.36.0.0' =>'255.252.0.0',
'218.48.0.0' =>'255.248.0.0', '218.144.0.0' =>'255.240.0.0',
'218.232.0.0' =>'255.248.0.0', '219.240.0.0' =>'255.255.0.0',
'219.241.0.0' =>'255.255.0.0', '219.248.0.0' =>'255.248.0.0',
'220.64.0.0' =>'255.224.0.0', '220.116.0.0' =>'255.252.0.0',
'220.120.0.0' =>'255.248.0.0', '221.138.0.0' =>'255.255.0.0',
'221.139.0.0' =>'255.255.0.0', '221.140.0.0' =>'255.252.0.0',
'221.144.0.0' =>'255.240.0.0', '221.160.0.0' =>'255.248.0.0',
'221.168.0.0' =>'255.255.0.0', '61.32.0.0' =>'255.248.0.0',
'61.40.0.0' =>'255.252.0.0', '61.72.0.0' =>'255.248.0.0',
'61.80.0.0' =>'255.252.0.0', '61.84.0.0' =>'255.255.0.0',
'61.85.0.0' =>'255.255.0.0', '61.96.0.0' =>'255.240.0.0',
'61.248.0.0' =>'255.248.0.0',
);
return $ipv4[$key];
}
function &ip2base($ipaddr)
{
return sprintf('%u',ip2long($ipaddr));
}
function &base2ip($base)
{
return long2ip($base);
}
} // end of class
?>