function get_login_ip_config_file($domain, $file) {
    $dir      = '/var/eyou/Domain/';
    $dir_mail = exec('/var/eyou/sbin/hashid '.$domain);  //$domain可以自己控制
....
}

<?php
...
require_once('inc/domain.config.php');
//ValidateAdmin();  //不需要登录
$domainname = get_domain(); //Get cookie　　
$allow_file = 'web_login_allow_ip'; 
$deny_file  = 'web_login_deny_ip';  
$domain     = trim(get('domain')); //$domain from here.
$type       = trim(get('type'));　　//Get type
$res = '';
if($domainname !== 'admin' && $domainname !== $domain) { //我们只是需要设置 $cookie=admin 就可以绕过并继续了.
    echo '';
    exit;
}
if($type === 'allow') {　//$type any go
    $file = $allow_file;
    $res .= 'ip_allow&';
} elseif($type === 'deny') {
    $file = $deny_file;
    $res .= 'ip_deny&';
} else {
    echo '';
    exit;
}
$file = get_login_ip_config_file($domain, $file);// 调用了get_login_ip_config_file函数
if($file === FALSE) {
    echo $res;
    exit;
}