DedeCms 万能安全防护代码

为了让大家的CMS更安全,有需要的手工在config_base.php里加上
打开
config_base.php
找到
复制代码
//禁止用户提交某些特殊变量
$ckvs = Array('_GET','_POST','_COOKIE','_FILES');
foreach($ckvs as $ckv){
if(is_array($$ckv)){
foreach($$ckv AS $key => $value)
if(eregi("^(cfg_|globals)",$key)) unset(${$ckv}[$key]);
}
}

改为下面代码
复制代码
//把get、post、cookie里的$ckvs = Array('_GET','_POST','_COOKIE');
foreach($ckvs as $ckv){
if(is_array($$ckv)){
foreach($$ckv AS $key => $value)
if(!empty($value)){
${$ckv}[$key] = str_replace('<'.'?','&'.'lt;'.'?',$value);
${$ckv}[$key] = str_replace('?'.'>','?'.'&'.'gt;',${$ckv}[$key]);
}
if(eregi("^cfg_|globals",$key)) unset(${$ckv}[$key]);
}
}
//检测上传的文件中是否有PHP代码,有直接退出处理
if (is_array($_FILES)) {
foreach($_FILES AS $name => $value){
${$name} = $value['tmp_name'];
$fp = @fopen(${$name},'r');
$fstr = @fread($fp,filesize(${$name}));
@fclose($fp);
if($fstr!='' && ereg("<\?",$fstr)){
echo "你上传的文件中含有危险内容,程序终止处理!";
exit();
}
}
}

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