Home  >  Article  >  Backend Development  >  PHP tips to prevent cross-site and xss attack code

PHP tips to prevent cross-site and xss attack code

jacklove
jackloveOriginal
2018-06-28 17:58:292124browse

这篇文章主要介绍了PHP实现的防止跨站和xss攻击代码,是一款来自阿里云的防注入脚本,可实现针对注入、XSS攻击等的过滤功能,需要的朋友可以参考下

本文实例讲述了PHP实现的防止跨站和xss攻击代码。分享给大家供大家参考,具体如下:

文档说明:

1.将waf.php传到要包含的文件的目录

2.在页面中加入防护,有两种做法,根据情况二选一即可:

a).在所需要防护的页面加入代码

require_once('waf.php');

就可以做到页面防注入、跨站

如果想整站防注,就在网站的一个公用文件中,如数据库链接文件config.inc.php中!

添加require_once('waf.php');来调用本代码

常用php系统添加文件

PHPCMS V9 \phpcms\base.php
PHPWIND8.7 \data\sql_config.php
DEDECMS5.7 \data\common.inc.php
DiscuzX2   \config\config_global.php
Wordpress   \wp-config.php
Metinfo   \include\head.php

b).在每个文件最前加上代码

在php.ini中找到:

Automatically add files before or after any PHP document.

auto_prepend_file = waf.php路径;

PHP文件 waf.php

<?php
/*云体检通用漏洞防护补丁v1.1
更新时间:2013-05-25
功能说明:防护XSS,SQL,代码执行,文件包含等多种高危漏洞
*/
$url_arr=array(
&#39;xss&#39;=>"\\=\\+\\/v(?:8|9|\\+|\\/)|\\%0acontent\\-(?:id|location|type|transfer\\-encoding)",
);
$args_arr=array(
&#39;xss&#39;=>"[\\&#39;\\\"\\;\\*\\<\\>].*\\bon[a-zA-Z]{3,15}[\\s\\r\\n\\v\\f]*\\=|\\b(?:expression)\\(|\\<script[\\s\\\\\\/]|\\<\\!\\[cdata\\[|\\b(?:eval|alert|prompt|msgbox)\\s*\\(|url\\((?:\\#|data|javascript)",
&#39;sql&#39;=>"[^\\{\\s]{1}(\\s|\\b)+(?:select\\b|update\\b|insert(?:(\\/\\*.*?\\*\\/)|(\\s)|(\\+))+into\\b).+?(?:from\\b|set\\b)|[^\\{\\s]{1}(\\s|\\b)+(?:create|delete|drop|truncate|rename|desc)(?:(\\/\\*.*?\\*\\/)|(\\s)|(\\+))+(?:table\\b|from\\b|database\\b)|into(?:(\\/\\*.*?\\*\\/)|\\s|\\+)+(?:dump|out)file\\b|\\bsleep\\([\\s]*[\\d]+[\\s]*\\)|benchmark\\(([^\\,]*)\\,([^\\,]*)\\)|(?:declare|set|select)\\b.*@|union\\b.*(?:select|all)\\b|(?:select|update|insert|create|delete|drop|grant|truncate|rename|exec|desc|from|table|database|set|where)\\b.*(charset|ascii|bin|char|uncompress|concat|concat_ws|conv|export_set|hex|instr|left|load_file|locate|mid|sub|substring|oct|reverse|right|unhex)\\(|(?:master\\.\\.sysdatabases|msysaccessobjects|msysqueries|sysmodules|mysql\\.db|sys\\.database_name|information_schema\\.|sysobjects|sp_makewebtask|xp_cmdshell|sp_oamethod|sp_addextendedproc|sp_oacreate|xp_regread|sys\\.dbms_export_extension)",
&#39;other&#39;=>"\\.\\.[\\\\\\/].*\\%00([^0-9a-fA-F]|$)|%00[\\&#39;\\\"\\.]");
$referer=empty($_SERVER[&#39;HTTP_REFERER&#39;]) ? array() : array($_SERVER[&#39;HTTP_REFERER&#39;]);
$query_string=empty($_SERVER["QUERY_STRING"]) ? array() : array($_SERVER["QUERY_STRING"]);
check_data($query_string,$url_arr);
check_data($_GET,$args_arr);
check_data($_POST,$args_arr);
check_data($_COOKIE,$args_arr);
check_data($referer,$args_arr);
function W_log($log)
{
  $logpath=$_SERVER["DOCUMENT_ROOT"]."/log.txt";
  $log_f=fopen($logpath,"a+");
  fputs($log_f,$log."\r\n");
  fclose($log_f);
}
function check_data($arr,$v) {
 foreach($arr as $key=>$value)
 {
  if(!is_array($key))
  { check($key,$v);}
  else
  { check_data($key,$v);}
  if(!is_array($value))
  { check($value,$v);}
  else
  { check_data($value,$v);}
 }
}
function check($str,$v)
{
  foreach($v as $key=>$value)
  {
  if (preg_match("/".$value."/is",$str)==1||preg_match("/".$value."/is",urlencode($str))==1)
    {
      //W_log("<br>IP: ".$_SERVER["REMOTE_ADDR"]."<br>时间: ".strftime("%Y-%m-%d %H:%M:%S")."<br>页面:".$_SERVER["PHP_SELF"]."<br>提交方式: ".$_SERVER["REQUEST_METHOD"]."<br>提交数据: ".$str);
      print "您的提交带有不合法参数,谢谢合作";
      exit();
    }
  }
}
?>

您可能感兴趣的文章:

Ubuntu上安装yaf扩展的方法php实例

thinkphp3.2.0 setInc方法 源码全面解析php实例

PHP 使用二进制保存用户状态的实例php技巧

The above is the detailed content of PHP tips to prevent cross-site and xss attack code. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn