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<?php |
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|
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/** |
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* NOTE: |
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* Functions in this file must NOT depend on any WordPress functions. |
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* |
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* Some of these functions are executed before WordPress is fully initialized. |
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* Adding WordPress-dependent logic here may result in fatal errors. |
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* |
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* When modifying or adding functions, always verify that |
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* country-blocking, brute force or any pre-init functionality remain unaffected. |
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*/ |
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|
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if(!defined('ABSPATH') && !defined('LOGINIZER_FIREWALL')){ |
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die('HACKING ATTEMPT!'); |
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} |
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|
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// Get the client IP |
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function _lz_getip(){ |
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if(isset($_SERVER["REMOTE_ADDR"])){ |
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return $_SERVER["REMOTE_ADDR"]; |
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}elseif(isset($_SERVER["HTTP_X_FORWARDED_FOR"])){ |
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return $_SERVER["HTTP_X_FORWARDED_FOR"]; |
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}elseif(isset($_SERVER["HTTP_CLIENT_IP"])){ |
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return $_SERVER["HTTP_CLIENT_IP"]; |
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} |
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} |
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|
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// Get the client IP |
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function lz_getip(){ |
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|
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global $loginizer; |
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|
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// Just so that we have something |
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$ip = _lz_getip(); |
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|
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$loginizer['ip_method'] = (int) @$loginizer['ip_method']; |
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|
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if(isset($_SERVER["REMOTE_ADDR"])){ |
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$ip = $_SERVER["REMOTE_ADDR"]; |
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} |
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|
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if(isset($_SERVER["HTTP_X_FORWARDED_FOR"]) && @$loginizer['ip_method'] == 1){ |
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if(strpos($_SERVER["HTTP_X_FORWARDED_FOR"], ',')){ |
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$temp_ip = explode(',', $_SERVER["HTTP_X_FORWARDED_FOR"]); |
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$ip = trim($temp_ip[0]); |
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}else{ |
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$ip = $_SERVER["HTTP_X_FORWARDED_FOR"]; |
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} |
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} |
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|
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if(isset($_SERVER["HTTP_CLIENT_IP"]) && @$loginizer['ip_method'] == 2){ |
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$ip = $_SERVER["HTTP_CLIENT_IP"]; |
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} |
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|
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if(@$loginizer['ip_method'] == 3 && isset($_SERVER[@$loginizer['custom_ip_method']])){ |
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$ip = $_SERVER[@$loginizer['custom_ip_method']]; |
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} |
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|
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// Hacking fix for X-Forwarded-For |
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if(!lz_valid_ip($ip)){ |
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return ''; |
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} |
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|
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return $ip; |
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|
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} |
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|
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// Check if an IP is valid |
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function lz_valid_ip($ip){ |
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|
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if(empty($ip)){ |
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return false; |
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} |
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|
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// IPv6 |
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if(lz_valid_ipv6($ip)){ |
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return true; |
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} |
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|
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// IPv4 |
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if(!ip2long($ip) || !lz_valid_ipv4($ip)){ |
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return false; |
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} |
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|
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return true; |
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} |
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|
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function lz_valid_ipv4($ip){ |
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if(!preg_match('/^(\d){1,3}\.(\d){1,3}\.(\d){1,3}\.(\d){1,3}$/is', $ip) || substr_count($ip, '.') != 3){ |
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return false; |
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} |
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|
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$r = explode('.', $ip); |
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|
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foreach($r as $v){ |
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$v = (int) $v; |
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if($v > 255 || $v < 0){ |
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return false; |
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} |
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} |
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|
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return true; |
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|
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} |
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|
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function lz_valid_ipv6($ip){ |
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|
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$pattern = '/^((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:))$/'; |
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|
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if(!preg_match($pattern, $ip)){ |
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return false; |
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} |
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|
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return true; |
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|
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} |
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|
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function loginizer_is_whitelisted(){ |
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|
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global $loginizer; |
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|
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$whitelist = $loginizer['whitelist']; |
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|
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if(empty($whitelist)){ |
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return false; |
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} |
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|
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$current_ip_inet = inet_ptoi($loginizer['current_ip']); |
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|
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foreach($whitelist as $k => $v){ |
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$start_inet = inet_ptoi($v['start']); |
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$end_inet = inet_ptoi($v['end']); |
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|
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// Is the IP in the blacklist ? |
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if($start_inet <= $current_ip_inet && $current_ip_inet <= $end_inet){ |
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$result = 1; |
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break; |
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} |
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|
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// Is it in a wider range ? |
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if($start_inet >= 0 && $end_inet < 0){ |
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|
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// Since the end of the RANGE (i.e. current IP range) is beyond the +ve value of inet_ptoi, |
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// if the current IP is <= than the start of the range, it is within the range |
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// OR |
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// if the current IP is <= than the end of the range, it is within the range |
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if($start_inet <= $current_ip_inet |
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|| $current_ip_inet <= $end_inet){ |
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$result = 1; |
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break; |
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} |
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|
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} |
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|
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} |
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|
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// You are whitelisted |
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if(!empty($result)){ |
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return true; |
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} |
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|
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return false; |
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|
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} |
