Re: Domain based sorting

LuKreme <[email protected]> squawked out on Thursday 18-Aug-2011@04:57:46
> One thing I will have to fix is that the FROM_DOMAIN will contain, for example, mx3.domain.tld and I want it to contain just “domain”. That’s trivial though (And in fact, I may have to check the procmailrc, but it might already be grabbed into a variable I’ve forgotten about).

OK, this should have been trivial enough, but my fu has failed me.

given Sean’s CELAN_FROM and FROM_DOMAIN I tried:

:0
* FROM_DOMAIN ?? .*\/([^\.]+)
{ ROOT_DOMAIN = $MATCH }

which works if the from domain is “domain.tld” but fails if the domain is “mail.domain.tld” (I get “mail”)

So, I tried to anchor it to the end:

:0
* FROM_DOMAIN ?? .*\/([^\.]+)\....?$
{ ROOT_DOMAIN = $MATCH }

but that always gives me “domain.tld” which confuses me because I thought the () match gave that portion to $MATCH

So, I started to think (dangerous, I know) and I searched and found Sean’s post from a few of years ago about dealing with getting domains in domain.co.uk sorts of situations:

Professional Software Engineering <[email protected]> squawked out on Sunday 25-Jan-2009@14:30:44
> # first, match the domain down to JUST the rightmost two tokens
> :0
> * FROMDOMAIN ?? [@.]?\/[^@.]+\.([^.]+|[^.][^.]\.[^.][^.])$

Again, that implies to me that my second aforementioned recipe should be working.

> {
>        TOPDOMAIN=$MATCH
> 
>        # next, get the domain portion - this is everything up to,
>        # but not including the first dot.
>        :0
>        * MATCH ?? ^\/[^.]+
>        {
>                DOMAIN=$MATCH

And it looks to me like this would result in ‘mail’ as well.

>        }
> 
>        # we need to fall back to the saved TOPDOMAIN and get the
>        # TLD portion - this is everything AFTER the domain and a dot.
>        # this implementation allows for two-part TLDs (co.uk for example)
>        # because the RHS of this condition includes a variable which
>        # needs to be expanded, we use the $ flag on the condition.
>        :0
>        * $ TOPDOMAIN ?? ^$DOMAIN\.\/.*$
>        {
>                TLD=$MATCH
>        }
> }

Now, in this specific case the emails we are trying to match are all in the domain.tld format and not the domain.xx.yy format (these are catalog sales and she’s not buying anything from the UK or canada or if she is they are using .com addresses) but it would be nice to get this right.


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