From: LuKreme (kremelskreme.com)
Date: Thu Mar 19 2009 - 04:55:36 CDT

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On 17-Mar-2009, at 08:52, Victor Duchovni wrote:
> On Tue, Mar 17, 2009 at 10:01:53AM -0400, Charles Marcus wrote:
>> On 3/17/2009 9:43 AM, Erwan David wrote:
>>> You may generate the pcre file with a line
>>> /recipient_([^_]+)localdomain/ recipient+${1}localdomain
>>>
>>> for each valid recipient. This would preserve the validation of
>>> recipient at RCPT TO stage.
>>
>> Interesting... and maybe a good candidate for my first usable
>> scripting
>> attempt.
>
> Perl is the natural choice for this:
>
> $ echo userexample.com |
> domain=example.com perl -lpe '
> s{^(.*)\\Q$ENV{domain}\E$}
> {/^\Q$1\E_(.*)\\Q$ENV{domain}\E\$/ $1+\${1}\$ENV{domain}}o;'
> /^user_(.*)example\.com$/ user+${1}example.com
>
> In practice instead of "echo ... |" Perl would read a list of
> addresses from
> a file. The "\Q...\E" construct is the critical ingredient for
> quoting PCRE
> special characters in the address localpart and domain.

I came up with this one liner:

  $ ls -1 /usr/local/virtual/ | grep "" | sed 's/^\([^]*\)\(.*\)$/\/
^\1_\(.*\)\2$\/ \1+${1}\2/'

testuserexample.com => /^testuser_(.*)example.com$/ testuser+${1}example.com

But the sed works for dumping all the virtual users into a .pcre map
for postfix.

--
My mind is going. There is no question about it. I can feel it. I can
        feel it. I can feel it. I'm... afraid.

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