39 lines
1.0 KiB
PHP
Executable File
39 lines
1.0 KiB
PHP
Executable File
<?php
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/**
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* [Discuz!] (C)2001-2099 Comsenz Inc.
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* This is NOT a freeware, use is subject to license terms
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*
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* $Id: ip_getter_dnslist.php 1034 2019-12-19 12:00:00Z community $
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*/
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if(!defined('IN_DISCUZ')) {
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exit('Access Denied');
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}
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class ip_getter_dnslist {
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public static function get($s) {
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if (empty($s['header']) || empty($s['list'])) {
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return $_SERVER['REMOTE_ADDR'];
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}
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$ip = $_SERVER['REMOTE_ADDR'];
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$rdns = gethostbyaddr($ip);
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foreach($s['list'] as $host) {
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if (preg_match('/'.$host.'$/i', $rdns)) {
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if ($s['header'] != 'HTTP_X_FORWARDED_FOR') {
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$ip = ip::validate_ip($_SERVER[$s['header']]) ? $_SERVER[$s['header']] : $ip;
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} else {
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if (strpos($_SERVER['HTTP_X_FORWARDED_FOR'], ",") > 0) {
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$exp = explode(",", $_SERVER['HTTP_X_FORWARDED_FOR']);
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$ip = ip::validate_ip(trim($exp[0])) ? $exp[0] : $ip;
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} else {
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$ip = ip::validate_ip($_SERVER['HTTP_X_FORWARDED_FOR']) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $ip;
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}
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}
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}
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}
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return $ip;
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}
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} |