Re: Ability to match against message body using lookup()

On 10/04/2013 04:42 PM, Sam Varshavchik wrote:
> Darren Spruell writes:
> 
>> Greetings,
>> 
>> I have a use case where I have short but growing list of patterns
>> I'd like to match against for filtering. I'd like the matches to
>> be limited to the Subject header and message body (but no other
>> headers). I also like the capability lookup() provides to stash
>> patterns in a file (with comments/etc.). I can see from the
>> documentation that matching against a concise expression (e.g.
>> $MATCH1 from a header match) using lookup() is easy, but how can
>> you handle an expressions that matches against the message body
>> generally? Is it valid/correct to do something remotely like
>> this?
>> 
>> if ( /^Subject:\s*(.*)/ && lookup( $MATCH1, "interesting.dat" )
>> || lookup( //:b, "interesting.dat" ) ) { # Do stuff }
> 
> The only way to do a full-body scan would be something like this:
> 
> foreach /.*/:b { if (lookup($MATCH, "interesting.dat")) { …
> 
> Body lookups will get done one line at a time. This will be slow,
> but, for personal use, and not overly large mail, this should be
> fine; but you'll want to make sure that you're running the current
> version of maildrop, which properly MIME-decodes message bodies,
> before matching them.

Thanks! I'll give this is a shot and see how it works.

DS

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