修复跨站攻击 php

在公用文件中加入如下代码

<?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(
'xss'=>"\=\+\/v(?:8|9|\+|\/)|\%0acontent\-(?:id|location|type|transfer\-encoding)",
);

$args_arr=array(
'xss'=>"[\'\"\;\*\<\>].*\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)",

'sql'=>"[^\{\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)",

'other'=>"\.\.[\\\/].*\%00([^0-9a-fA-F]|$)|%00[\'\"\.]");

$referer=empty($_SERVER['HTTP_REFERER']) ? array() : array($_SERVER['HTTP_REFERER']);
$query_string=empty($_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."
");
	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();
		}
	}
}
?>