On Fri, Nov 03, 2006 at 03:34:15PM +0200, Brent Clark said:
>
> Hey all
>
> I just found a hole / bug in my acl for file extension handling.
>
> This is my current ACL
>
> # File extension filtering.
> deny set acl_m1 = ${extract{-1}{.}{${lc:$mime_filename}}}
> message = Disallowed file extension
> log_message = REJECTED ATTACHMENT ($acl_m1) (rcpt to: $recipients)
>
> condition = ${if match{$acl_m1}{\N^(
[...]
> )$\N}{1}{0}}
The bug is that you start your regex expects there to be no whitespace
between the final dot and the beginning of the extension. You'll want
to allow optional whitespace at the beginning (and probably the end) of
your regex.
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