Whitelisting file types

[Julian Field]

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I have had a suggestion for a new feature, for the filename and 
filetype.rules.conf controls.
A simple ruleset (normal one) that lists regexps for filenames to be 
allowed, and one for filenames to be banned.
Both of these would be read (in allowed then denied order) before the 
filename.rules.conf file, together with a possibly ruleset controlling it.
The same would be done for filetype.rules.conf as well.

So you would have a
Allowed Filenames = %rules-dir%/allowed.filenames.rules
Denied Filenames = %rules-dir%/denied.filenames.rules
and the same for Filetypes.

This should be fairly easy to implement and will make most configuration 
of this feature an enormous amount easier.

What do people think?

May happen this weekend, if not before.

- -- 
Julian Field
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