这是个类似Cloudflare的防cc功能,利用的是五秒盾的原理,经过检测得到cookie的浏览器才能正常的访问你的网站了,当然了,面对数以万计的肉鸡,这代码还是无能为力的,所以说做人就要低调,别到处装逼,到时候被打了惨的还是自己,下面分享给需要的同学。
WordPress – 5秒盾防CC(PHP通用代码)
简介
使用教程新建文件
首先建个PHP文件cc.php代码如下:
<?php define('SYSTEM_ROOT', dirname(preg_replace('@\\(.*\\(.*$@', '', preg_replace('@\\(.*\\(.*$@', '', __FILE__))) . '/'); session_start(); date_default_timezone_set('Asia/Shanghai'); header('Content-Type: text/html; charset=UTF-8'); function getspider($useragent=''){ if(CC_Defender==2)return false; if(!$useragent){$useragent = $_SERVER['HTTP_USER_AGENT'];} $useragent=strtolower($useragent); if (strpos($useragent, 'baiduspider') !== false){return 'baiduspider';} if (strpos($useragent, 'googlebot') !== false){return 'googlebot';} if (strpos($useragent, 'soso') !== false){return 'soso';} if (strpos($useragent, 'bing') !== false){return 'bing';} if (strpos($useragent, 'yahoo') !== false){return 'yahoo';} if (strpos($useragent, 'sohu-search') !== false){return 'Sohubot';} if (strpos($useragent, 'sogou') !== false){return 'sogou';} if (strpos($useragent, 'youdaobot') !== false){return 'YoudaoBot';} if (strpos($useragent, 'yodaobot') !== false){return 'YodaoBot';} if (strpos($useragent, 'robozilla') !== false){return 'Robozilla';} if (strpos($useragent, 'msnbot') !== false){return 'msnbot';} if (strpos($useragent, 'lycos') !== false){return 'Lycos';} if (strpos($useragent, 'ia_archiver') !== false || strpos($useragent, 'iaarchiver') !== false){return 'alexa';} if (strpos($useragent, 'archive.org_bot') !== false){return 'Archive';} if (strpos($useragent, 'robozilla') !== false){return 'Robozilla';} if (strpos($useragent, 'sitebot') !== false){return 'SiteBot';} if (strpos($useragent, 'mj12bot') !== false){return 'MJ12bot';} if (strpos($useragent, 'gosospider') !== false){return 'gosospider';} if (strpos($useragent, 'gigabot') !== false){return 'Gigabot';} if (strpos($useragent, 'yrspider') !== false){return 'YRSpider';} if (strpos($useragent, 'gigabot') !== false){return 'Gigabot';} if (strpos($useragent, 'jikespider') !== false){return 'jikespider';} if (strpos($useragent, 'addsugarspiderbot') !== false){return 'AddSugarSpiderBot';/*非常少*/} if (strpos($useragent, 'testspider') !== false){return 'TestSpider';} if (strpos($useragent, 'etaospider') !== false){return 'EtaoSpider';} if (strpos($useragent, 'wangidspider') !== false){return 'WangIDSpider';} if (strpos($useragent, 'foxspider') !== false){return 'FoxSpider';} if (strpos($useragent, 'docomo') !== false){return 'DoCoMo';} if (strpos($useragent, 'yandexbot') !== false){return 'YandexBot';} if (strpos($useragent, 'ezooms') !== false){return 'Ezooms';/*个人*/} if (strpos($useragent, 'sinaweibobot') !== false){return 'SinaWeiboBot';} if (strpos($useragent, 'catchbot') !== false){return 'CatchBot';} if (strpos($useragent, 'surveybot') !== false){return 'SurveyBot';} if (strpos($useragent, 'dotbot') !== false){return 'DotBot';} if (strpos($useragent, 'purebot') !== false){return 'Purebot';} if (strpos($useragent, 'ccbot') !== false){return 'CCBot';} if (strpos($useragent, 'mlbot') !== false){return 'MLBot';} if (strpos($useragent, 'adsbot-google') !== false){return 'AdsBot-Google';} if (strpos($useragent, 'ahrefsbot') !== false){return 'AhrefsBot';} if (strpos($useragent, 'spbot') !== false){return 'spbot';} if (strpos($useragent, 'augustbot') !== false){return 'AugustBot';} return false; } if($_GET['rand'] && $_SESSION['rand_session']!=$_GET['rand']){ @header('Content-Type: text/html; charset=UTF-8'); exit('<b>浏览器不支持COOKIE或者不正常访问!</b>'); } if(!$_SESSION['rand_session'] && $nosecu!=true){ if(!getspider()){ $rand_session=md5(uniqid().rand(1,1000)); $_SESSION['rand_session']=$rand_session; exit("<!DOCTYPE HTML> <html> <head> <meta charset=\"UTF-8\"/> <meta name=\"viewport\" content=\"width=device-width, initial-scale=1, maximum-scale=1\" /> <title>In inspection...</title> <script> var i = 5; var intervalid; intervalid = setInterval(\"fun()\", 1000); function fun() { if (i == 0) { window.location.href = \"?{$_SERVER['QUERY_STRING']}&rand={$rand_session}\"; clearInterval(intervalid); } document.getElementById(\"mes\").innerHTML = i; i--; } </script> <style> html, body {width: 100%; height: 100%; margin: 0; padding: 0;} body {background-color: #ffffff; font-family: Helvetica, Arial, sans-serif; font-size: 100%;} h1 {font-size: 1.5em; color: #404040; text-align: center;} p {font-size: 1em; color: #404040; text-align: center; margin: 10px 0 0 0;} #spinner {margin: 0 auto 30px auto; display: block;} .attribution {margin-top: 20px;} </style> </head> <body> <table width=\"100%\" height=\"100%\" cellpadding=\"20\"> <tr> <td align=\"center\" valign=\"middle\"> <noscript><h2>请打开浏览器的javascript,然后刷新浏览器</h2></noscript> <h1><span data-translate=\"checking_browser\">浏览器安全检查中...</span></h1> <p data-translate=\"process_is_automatic\"></p> <p data-translate=\"allow_5_secs\">还剩 <span id=\"mes\">5</span> 秒</p> </div> </div> </td> </tr> </table></body></html>");}}
WordPress 上传到主题/template/cc.php ;
调用代码
PHP通用调用,在头部或主要文件内文件加入:
<?php include 'cc.php'; ?>
WordPress调用,主题/header.php第一行添加代码:
<?php get_template_part( 'template/cc' ); ?>建议
可以把代码调用至404错误页,对于单IP刷新CC不存在页面有很好的防御效果!
首次访问网站检测浏览器cookie通过才能正常的访问你的网站,搜索引擎蜘蛛已经过滤,不影响收录,还有未加上的可以自己补充。平时没攻击的时候建议不要开启,影响网站体验,配合《Nginx lua waf 简单防御CC攻击》效果更佳。
补充
使用方法
2019/07/02 新增脚本运用,根据系统负载来开启/关闭5秒盾,新建check_5.sh:
#!/bin/bash # author: yunloc # website: https://yunloc.com if [ ! -f "status.txt" ];then echo "" > status.txt else status=$(cat status.txt) fi now=$(date +%s) time=$(date +%s -r status.txt) load=$(cat /proc/loadavg | colrm 5) echo "当前负载:$load" newtime=`expr $now - $time` if [[ $load <1.2 ]] && [[ $status -eq 1 ]] && [[ $newtime >600 ]] then cResult=$(/bin/cp /home/wwwroot/yunloc.com/wp-content/themes/begin/header_5_on.php /home/wwwroot/yunloc.com/wp-content/themes/begin/header.php) echo $cResult echo "负载低于 1.2,当前已开盾超过 10 分钟($newtime 秒),尝试关盾" echo 0 > status.txt elif [[ $load <1.2 ]] then echo "负载低于 1.2,不做任何改变,$newtime 秒" exit else cResult=$(/bin/cp /home/wwwroot/yunloc.com/wp-content/themes/begin/header_5_off.php /home/wwwroot/yunloc.com/wp-content/themes/begin/header.php) echo $cResult echo "负载高于 1.2,开启防御规则" echo 1 > status.txt fi
设置定时任务,每1分钟检查一次:
*/1 * * * * /root/check_5.sh
新建两个文件:
/home/wwwroot/yunloc.com/wp-content/themes/begin/pheader_5_off.php
(首行加入WordPress调用代码)开启防御后把文件写入header.php
/home/wwwroot/yunloc.com/wp-content/themes/begin/header_5_on.php
原理
当系统负载达到1.2后自动开启,小于1.2后600秒关闭。
关于负载一般可以简单的设置为你的核心数*1.2 比如你CPU是双核的,可以设置为2.4。
发表评论
木有头像就木JJ啦!还木有头像吗?点这里申请属于你的个性Gravatar头像吧!