EMLOG防CC代码

代码一:
<?php
function sheli_cc(){
       session_start();
$timestampcc = time();
$cc_nowtime = $timestampcc;
if(isset($_SESSION['cc_lasttime'])){$cc_lasttime = $_SESSION['cc_lasttime'];$cc_times = $_SESSION['cc_times']+1;$_SESSION['cc_times'] = $cc_times;
}else{$cc_lasttime = $cc_nowtime;$cc_times = 1;$_SESSION['cc_times'] = $cc_times;$_SESSION['cc_lasttime'] = $cc_lasttime;} 
if(($cc_nowtime-$cc_lasttime)<60){if($cc_times>=3){header(sprintf('Location:%s', 'http://127.0.0.1'));exit;}//60秒内刷新3次以上可能为cc攻击
}else{$cc_times = 0;$_SESSION['cc_lasttime'] = $cc_nowtime;$_SESSION['cc_times'] = $cc_times;}
}
?>
代码二:
<pre class="prettyprint lang-php linenums"><?php
function sheli_cc(){
        //代理IP直接退出
        empty($_SERVER['HTTP_VIA']) or exit('Access Denied');
        //防止快速刷新
        session_start();
        $seconds = '60'; //时间段[秒]
        $refresh = '3'; //刷新次数
        //设置监控变量
        $cur_time = time();
        if(isset($_SESSION['last_time'])){
                $_SESSION['refresh_times'] += 1;
        }else{
                $_SESSION['refresh_times'] = 1;
                $_SESSION['last_time'] = $cur_time;
        }
        //处理监控结果
        if($cur_time - $_SESSION['last_time'] < $seconds){
                if($_SESSION['refresh_times'] >= $refresh){
                        //跳转至攻击者服务器地址
                        header(sprintf('Location:%s', 'http://127.0.0.1'));
                        exit('Access Denied');
                }
        }else{
                $_SESSION['refresh_times'] = 0;
                $_SESSION['last_time'] = $cur_time;
        }
}
?>
 

最后在head.php文件的require_once View::getView(‘module’);后面插入echo sheli_cc();

 

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