PHP download file thingy

[trix]

Hey, I'm just trying to have a simple php download script (http://www.yourdomain.com/download.php?file=something.zip). The code I've come upon is working but you can link to it from other sites so that defeats its purpose... heres the code i got so far...

<?
$dir="/path/to/file";
if (isset($_REQUEST["file"])) {
  $file=$dir.$_REQUEST["file"];
  header("Content-type: application/force-download");
  header("Content-Transfer-Encoding: Binary");
  header("Content-length: ".filesize($file));
  header("Content-disposition: attachment; filename=\"".basename($file)."\"");
  readfile("$file");
} else {
  echo "No file selected";
}
?>

How can i restrict it to a certain domain? and is there anychance to do this: when a certain ip/username downloads somethign says its 200meg and the ip comes back on the SAME day to download another 200meg can the script say no ya cnt download you have allready used up ur 200meg download limit for today try again tomorrow

[Guest]

here use http_referer - i think

$yourdomain = '';

if($_SERVER['HTTP_REFERER'] != $yourdomain)

{

echo 'not today buddy';

exit;

}

sumot like that

[Dell]

<?

$filename = $_GET["file"];

if(file_exists($filename)){ 

header("Content-type: application/octet-stream"); 
header("Content-Length: ".filesize($filename)); 
header("Content-Disposition: attachment; filename=$filename"); 

$fp = fopen($filename, 'rb'); 
fpassthru($fp); 
fclose($fp);

}else{
echo "File not found on server!";
}

?>

Usage: http://www.domain.com/download.php?file=mytextfile.txt

Try that, i made that about 2 months ago and never had to need it but just pulled it back up... im almost certain it works ;)

[axis]

Maybe your htacess file is set to not allow form other sites?