Maverick — Sat, 01 Jul 2000 15:25:07 +0000

One way to do it with mod_rewrite. In .htaccess you'd put something like:

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://www.angelfire.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://angelfire.com/.*$ [NC]
RewriteRule .*\.exe$ download.php3

That would look at the HTTP_REFERER field of the requesting browser whenever a file with the .exe extension was requested. If it came from angelfire it would allow the request, otherwise it would forward to a page called download.php3. In download.php3 you could just add in a link to the originally requested file with something like <? echo $REQUEST_URI ?>

Angelfire probably uses a far more complicated system, but if you're looking to do something similar on your site, that's the way to go about it.