Question about RewriteRule and HTTP_HOST server variable

Posted by SeancoJr on Server Fault See other posts from Server Fault or by SeancoJr
Published on 2009-12-29T11:16:44Z Indexed on 2010/04/20 0:03 UTC
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In evaluating a rewrite rule that redirects to a specific URL and say the rewrite condition is met, would it be possible to use HTTP_HOST as part of the URL to be redirected to?

Example in question:

RewriteRule .*\.(jpg|jpe?g|gif|png|bmp)$ http://%{HTTP_HOST}/no-leech.jpg [R,NC]

The motive behind this question is a desire to create a single htaccess file that would match against an addon domain (on a shared hosting account) and an infinite amount of subdomains below it to prevent hotlinking of images.

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