120 lines
3.5 KiB
PHP
120 lines
3.5 KiB
PHP
<?php
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/*
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Whois.php PHP classes to conduct whois queries
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Copyright (C)1999,2005 easyDNS Technologies Inc. & Mark Jeftovic
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Maintained by David Saez
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For the most recent version of this package visit:
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http://www.phpwhois.org
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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//-----------------------------------------------------------------
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// Check if ip adddress is valid
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function phpwhois_validip($ip)
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{
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if (empty($ip))
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return false;
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if ((ip2long($ip) == -1) or (ip2long($ip) === false))
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return false;
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$reserved_ips = array (
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array('0.0.0.0','2.255.255.255'),
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array('10.0.0.0','10.255.255.255'),
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array('127.0.0.0','127.255.255.255'),
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array('169.254.0.0','169.254.255.255'),
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array('172.16.0.0','172.31.255.255'),
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array('192.0.2.0','192.0.2.255'),
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array('192.168.0.0','192.168.255.255'),
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array('255.255.255.0','255.255.255.255')
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);
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foreach ($reserved_ips as $r)
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{
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$min = ip2long($r[0]);
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$max = ip2long($r[1]);
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if ((ip2long($ip) >= $min) && (ip2long($ip) <= $max)) return false;
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}
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return true;
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}
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//-----------------------------------------------------------------
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// Get real client ip address
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function phpwhois_getclientip()
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{
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if (!empty($_SERVER['HTTP_CLIENT_IP']) && phpwhois_validip($_SERVER['HTTP_CLIENT_IP']))
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return $_SERVER['HTTP_CLIENT_IP'];
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if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
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foreach (explode(',',$_SERVER['HTTP_X_FORWARDED_FOR']) as $ip)
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if (phpwhois_validip(trim($ip)))
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return $ip;
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if (!empty($_SERVER['HTTP_X_FORWARDED']) && phpwhois_validip($_SERVER['HTTP_X_FORWARDED']))
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return $_SERVER['HTTP_X_FORWARDED'];
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if (!empty($_SERVER['HTTP_FORWARDED_FOR']) && phpwhois_validip($_SERVER['HTTP_FORWARDED_FOR']))
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return $_SERVER['HTTP_FORWARDED_FOR'];
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if (!empty($_SERVER['HTTP_FORWARDED']) && phpwhois_validip($_SERVER['HTTP_FORWARDED']))
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return $_SERVER['HTTP_FORWARDED'];
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if (!empty($_SERVER['HTTP_X_FORWARDED']) && phpwhois_validip($_SERVER['HTTP_X_FORWARDED']))
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return $_SERVER['HTTP_X_FORWARDED'];
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return $_SERVER['REMOTE_ADDR'];
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}
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//-----------------------------------------------------------------
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// Convert from CIDR to net range
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function phpwhois_cidr_conv($net)
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{
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$start = strtok($net, '/');
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$n = 3-substr_count($net, '.');
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if ($n > 0)
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{
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for ($i = $n; $i > 0; $i--)
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$start.= '.0';
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}
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$bits1 = str_pad(decbin(ip2long($start)), 32, '0', 'STR_PAD_LEFT');
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$net = pow(2, (32-substr(strstr($net, '/'), 1))) - 1;
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$bits2 = str_pad(decbin($net), 32, '0', 'STR_PAD_LEFT');
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$final = '';
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for ($i = 0; $i < 32; $i++)
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{
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if ($bits1[$i] == $bits2[$i])
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$final.= $bits1[$i];
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if ($bits1[$i] == 1 and $bits2[$i] == 0)
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$final.= $bits1[$i];
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if ($bits1[$i] == 0 and $bits2[$i] == 1)
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$final.= $bits2[$i];
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}
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return $start." - ".long2ip(bindec($final));
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}
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?>
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