PHP Web木马扫描器

<!--?php 
header('content-type:text/html;charset=gbk'); 
set_time_limit(0);//防止超时 
/**
*
* php目录扫描监控增强版
*
* @version 1.0
*
下面几个变量使用前需要手动设置
*
**/
/*===================== 程序配置 =====================*/
$pass="test";//设置密码 
$jkdir="."; //设置监控扫描的目录，当前目录为'.'，上一级目录为'..'，也可以设置绝对路径，后面不要加斜杠，默认为当前目录 
$logfilename="./m.log";//设置存储log的路径，可以放置在任意位置 
$exclude=array('data','images');//排除目录 
$danger='eval|cmd|passthru|gzuncompress';//设置要查找的危险的函数 以确定是否木马文件 
$suffix='php|inc';//设置要扫描文件的后缀 
/*===================== 配置结束 =====================*/
    
$filename=$_GET['filename']; 
$check=$_GET['check']; 
$jumpoff=false; 
$url = $_SERVER['PHP_SELF']; 
$thisfile = end(explode('/',$url)); 
$jump="{$thisfile}|".implode('|',$exclude); 
$jkdir_num=$file_num=$danger_num=0; 
define('M_PATH',$jkdir); 
define('M_LOG',$logfilename); 
if ($check=='check') 
{ 
$safearr = explode("|",$jump); 
$start_time=microtime(true); 
safe_check($jkdir); 
$end_time=microtime(true); 
$total=$end_time-$start_time; 
$file_num=$file_num-$jkdir_num; 
$message= " 文件数:".$file_num; 
$message.= " 文件夹数：".$jkdir_num; 
$message.= " 可疑文件数：".$danger_num; 
$message.= " 执行时间：".$total; 
echo $message; 
}else{ 
if ($_GET['m']=="del") Delete();//处理文件删除 
//读取文件内容 
if(isset($_GET['readfile'])){ 
//输出查看密码，密码校验正确以后输出文件内容 
if(empty($_POST['passchack'])){ 
   echo"<form id=\"form1\" name=\"form1\" method=\"post\"-->"
    . " <label>pass"
    . " <input type="\"text\"" name="\"passchack\"">"
    . " </label>"
    . " <input type="\"submit\"" name="\"Submit\"" value="\"提交\"">"
    . ""
   .""; 
   exit; 
}elseif(isset($_POST['passchack'])&&$_POST['passchack']==$pass){ 
   $code=file_get_contents($_GET['readfile']); 
   echo"<textarea name="\"code\"" cols="\"150\"" rows="\"30\"" id="\"code\"" style="'width:100%;height:450px;background:#cccccc;'">{$code}</textarea>"; 
   exit; 
}else{ 
   exit; 
} 
    
}else{ 
record_md5(M_PATH); 
if(file_exists(M_LOG)){ 
        $log = unserialize(file_get_contents(M_LOG)); 
}else{ 
        $log = array(); 
} 
    
if($_GET['savethis']==1){ 
//保存当前文件md5到日志文件 
@unlink(M_LOG); 
file_put_contents(M_LOG,serialize($file_list)); 
echo "<a href="'scandir.php'">保存成功！点击返回</a>"; 
exit; 
} 
if(empty($log)){ 
echo "当前还没有创建日志文件！点击[保存当前]创建日志文件！"; 
}else{ 
if($file_list==$log){ 
   echo "本文件夹没有做过任何改动！"; 
}else{ 
   if(count($file_list) > 0 ){ 
    foreach($file_list as $file => $md5){ 
    if(!isset($log[$file])){ 
     echo "新增文件：<a href="{$file}" target="'_blank'">".$file."</a>"." 创建时间：".date("Y-m-d H:i:s",filectime($file))." 修改时间：".date("Y-m-d H:i:s",filemtime($file))." <a href="?readfile={$file}" target="'_blank'">源码</a><a href="'?m=del&filename={$file}'" target="'_blank'">删除</a><br>"; 
    }else{ 
     if($log[$file] != $md5){ 
     echo "修改文件：<a href="{$file}" target="'_blank'">".$file."</a>"." 创建时间：".date("Y-m-d H:i:s",filectime($file))." 修改时间：".date("Y-m-d H:i:s",filemtime($file))." <a href="?readfile={$file}" target="'_blank'">源码</a><br>"; 
    
     unset($log[$file]); 
     }else{ 
     unset($log[$file]); 
     } 
    } 
    } 
   } 
   if(count($log)>0){ 
    foreach($log as $file => $md5){ 
    echo "删除文件：<a href="{$file}" target="'_blank'">".$file."</a><br>"; 
    } 
   } 
    } 
} 
} 
} 
    
//计算md5 
function record_md5($jkdir){ 
        global $file_list,$exclude; 
        if(is_dir($jkdir)){ 
                $file=scandir($jkdir); 
                foreach($file as $f){ 
                        if($f!='.' && $f!='..' && !in_array($f, $exclude)){ 
                                $path = $jkdir.'/'.$f; 
                                if(is_dir($path)){ 
                                        record_md5($path); 
                                }else{ 
                                        $file_list[$path]=md5_file($path); 
                                } 
                        } 
                } 
        } 
} 
    
function Safe_Check($jkdir)//遍历文件 
{ 
global $danger ,$suffix ,$jkdir_num ,$file_num ,$danger_num; 
    
) or die('文件夹不存在') ; 
while ($file=$hand->read()) 
{ 
    $filename=$jkdir.'/'.$file; 
    if (!$jumpoff) { 
   if(Jump($filename))continue; 
    } 
    if(@is_dir($filename) && $file != '.' && $file!= '..'&& $file!='./..') 
    {   $jkdir_num++; 
    Safe_Check($filename); 
    } 
    if (preg_match_all ("/\.($suffix)/i",$filename,$out)) 
    { 
    
   $str=^^ `; 
   $fp = @fopen($filename,'r')or die('没有权限'); 
   while(!feof($fp)) 
   { 
   $str .= fgets($fp,1024); 
   } 
   fclose($fp); 
   if( preg_match_all ("/($danger)[ \r\n\t]{0,}([\[\(])/i",$str,$out)) 
   { 
   echo "<font color="'green'" style="'font-size:14px'">可疑文件：{$filename}</font>"." 创建时间：".date("Y-m-d H:i:s",filectime($filename))." 修改时间：".date("Y-m-d H:i:s",filemtime($filename))." <a href="'?readfile={$filename}'" target="'_blank'"><u>查看代码</u></a> <a href="'?m=del&filename=$filename'" target="'_blank'">删除</a><br>"; 
   $danger_num++; 
   } 
    } 
    $file_num++; 
} 
} 
function Edit()//查看可疑文件 
{ 
global $filename; 
$filename = str_replace("..","",$filename); 
$file = $filename; 
$content = ""; 
if(is_file($file)) 
{ 
    $fp = fopen($file,"r")or die('没有权限'); 
    $content = fread($fp,filesize($file)); 
    fclose($fp); 
    $content = htmlspecialchars($content); 
    
} 
echo "<textarea name="'str'" style="'width:100%;height:450px;background:#cccccc;'">$content</textarea>\r\n"; 
exit(); 
} 
function Delete()//删除文件 
{ global $filename,$pass; 
if(empty($_POST['passchack'])){ 
    echo"<form id="\"form1\"" name="\"form1\"" method="\"post\"">"
   . " <label>pass"
   . " <input type="\"text\"" name="\"passchack\"">"
   . " </label>"
   . " <input type="\"submit\"" name="\"Submit\"" value="\"提交\"">"
   . "</form>"
    .""; 
    exit; 
}elseif(isset($_POST['passchack'])&&$_POST['passchack']==$pass){ 
   (is_file($filename))?($mes=unlink($filename)?'删除成功':'删除失败 查看权限'):^^ `; 
   echo $mes; 
   exit(); 
}else{ 
   echo '密码错误！'; 
   exit; 
} 
} 
function Jump($file)//跳过文件 
{ 
global $jump,$safearr; 
if($jump != ^^ `) 
{ 
    foreach($safearr as $v) 
    { 
   if($v==^^ `) continue; 
   if( eregi($v,$file) ) return true ; 
    } 
} 
return false; 
} 
?> 
<a href="scandir.php">[查看文件改动]</a>|<a href="scandir.php?savethis=1">[保存当前文件指纹]</a>|<a href="scandir.php?check=check">[扫描可疑文件]</a>