Hotlink korumasi ( class ) - Geniş Kapsamlı Doküman ve Makale Sitesi

<?
/*********************************************/
/*     Desenvolvido por Jonis Maurin Ceará   */
/*           jonis@jonis.cjb.net             */
/*              ( LifeGuarD )                */
/*              UIN: 5719948                 */
/*                                           */
/*                                           */
/*    This class block download from         */
/*    other sites. You can add domains       */
/*    that are enabled to download your      */
/*    files. You can also share files        */
/*    that are in non-web folder.            */
/*                                           */
/*                                           */
/*               Questions?                  */
/*       e-mail: jonis@jonis.cjb.net         */
/*                                           */
/*                                           */
/*    This script is freeware, you are       */
/*    free to copy, but you should keep      */
/*    copyright note.                        */
/*                                           */
/*    Este script é freeware, voce pode      */
/*    usa-lo a vontade desde que mantenha    */
/*    os creditos no mesmo.                  */
/*                                           */
/*********************************************/

class D_Security {

    var $lista;
    var $path;

    function Dow_Security() {
        $this->lista = array(); // Create empty host list
        $this->path = "./"; // set default path do current folder
    }

    function SetPath($path) {
        $this->path = $path;
    }

    function AddHost($host) {
        if (empty($host)) {
            return false;
        }
        $this->lista[] = $host;
        return true;
    }

    function RemoveHost($host) {
        for ($i=0;$i<count($this->lista);$i++) {
            if ($this->lista[$i]==$host) {
                $this->RemoveArrayItem($this->lista,$i);
            }
        }
    }

    function ListHosts() {
        return $this->lista;
    }

    function RemoveArrayItem(&$ar,$item)
    {
        $ar = array_merge(array_splice($ar,0,$item),array_splice($ar,1));
    }

    function DownloadFile($filename) {
        if ($this->ChecaReferer() == true) {
            $fil = $this->$path.$filename;
            header("Content-type: application/octet-stream");
            header("Content-disposition: attachment; filename=".basename($fil));
            header("Content-Transfer-Encoding: binary");
            header("Content-Length: ".filesize("$fil"));
            readfile($fil);
            return true;
        } else {
            return false;
        }

    }

    function ChecaReferer() {
        $cont = count($this->lista);

        for ($x=0;$x<$cont;$x++) {
            if (eregi($this->lista[$x],$_SERVER["HTTP_REFERER"])) {
                return true;
                break;
            }

        }

    }

}
// Example
$dow = new D_Security(); // Create new object
$dow->SetPath("./"); // set the folrder where the files are stored

$dow->AddHost("www.your-website.com"); // Add host to list
$dow->AddHost($_SERVER["HTTP_REFERER"]); // Add host to list

if (!$dow->DownloadFile("example.exe")) { // Download the file
    echo "<br>Error: you are trying to download this file from unauthorized site<br>";
    echo "Try again from authorized host now: <a href=downloader.php>link</a>";
}  ?>
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