Is it possible to set headers conditionally?

.htaccess, apache, cache-control, mod-headers

Solution

Well I figured out you can set headers a different way using mod_rewrite making it much easier:

RewriteCond %{HTTP_USER_AGENT} !(googlebot|bingbot|Baiduspider) [NC]  
RewriteCond %{HTTP_REFERER} google [NC]  
RewriteRule ^.*$ - [ENV=LONGCACHE:true]
Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" env=LONGCACHE
Header set Pragma "no-cache" env=LONGCACHE
Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT" env=LONGCACHE

Problem

I would like `.htaccess` to perform the following code ONLY if `http_referer` is from google (.com/ .ru/ .co.uk /.co.in/ etc.). Is this possible? ``` <filesMatch ".(jpg|jpeg|png|gif)$"> FileETag None <ifModule mod_headers.c> Header unset ETag Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" Header set Pragma "no-cache" Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT" </ifModule> </FilesMatch> ```

Original source