.htaccess - Deny direct access to files but allow query strings in htaccess -

so browsed through htaccess solutions none scenario...

basically want deny direct access file types except ones listed, this:

order deny,allow deny <filesmatch ".(flv|gif|jpg|jpeg|png|ico|swf|js|css|less|pdf|php|html)$"> allow </filesmatch> 

the problem can't use urls /?foo=bar must use /index.php?foo=bar ...

how solve this? rewritecond? can drop oneliner same?

thanks.

this worked:

<filesmatch ".(flv|gif|jpg|jpeg|png|ico|swf|js|css|less|pdf|php|html|htm)$">     allow </filesmatch> <filesmatch "^(index\.php)?$">     allow </filesmatch>