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Date:      Sat, 18 Dec 2004 17:14:44 +0100
From:      Max Laier <max@love2party.net>
To:        freebsd-pf@freebsd.org
Cc:        sam wun <sam.wun@authtec.com>
Subject:   Re: Add new PF rules from C.
Message-ID:  <200412181714.51674.max@love2party.net>
In-Reply-To: <41C3BA23.5070207@authtec.com>
References:  <41C3B6CE.4080704@authtec.com> <200412180557.00999.max@love2party.net> <41C3BA23.5070207@authtec.com>

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On Saturday 18 December 2004 06:03, sam wun wrote:
> Thanks for the sugestion. I use pfctl -ss found some Established state,
> the sample code works great.
> I would like to write a C program add rule to PF base on based on user
> defined anchor and tables. Where can I find more inforamtion and
> guideline about doing that?

Look at pfctl(8) (src/contrib/pf/pfctl/...) it's all in there. The code is=
=20
quite readable and it should be easy to determine what to hand to the vario=
us=20
ioctls. In most of the cases you don't really need to write your own C code=
=2E=20
Most of the time it should be sufficient to exec() pfctl(8) and pipe rules =
to=20
it. Take a look at the spamd port (mail/spamd) which does just that. You=20
might need a fdescfs(5) in order to drop root privs and use the -p option.=
=20
But that should all be obvious from the spamd code.

=2D-=20
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