From owner-freebsd-questions@freebsd.org  Wed Mar 30 14:55:54 2016
Return-Path: <owner-freebsd-questions@freebsd.org>
Delivered-To: freebsd-questions@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 76EA6AE2884
 for <freebsd-questions@mailman.ysv.freebsd.org>;
 Wed, 30 Mar 2016 14:55:54 +0000 (UTC)
 (envelope-from stdin@niklaas.eu)
Received: from box.niklaas.eu (box.niklaas.eu [46.165.253.68])
 by mx1.freebsd.org (Postfix) with ESMTP id 3CE23127A
 for <freebsd-questions@freebsd.org>; Wed, 30 Mar 2016 14:55:54 +0000 (UTC)
 (envelope-from stdin@niklaas.eu)
Received: by box.niklaas.eu (Postfix, from userid 1001)
 id 53C0F61FAA; Wed, 30 Mar 2016 16:55:47 +0200 (CEST)
Date: Wed, 30 Mar 2016 16:55:47 +0200
From: Niklaas Baudet von Gersdorff <stdin@niklaas.eu>
To: freebsd-questions@freebsd.org
Subject: Re: Variables substitution in jail.conf
Message-ID: <20160330145547.GC1256@box.niklaas.eu>
Mail-Followup-To: freebsd-questions@freebsd.org
References: <7fbd35d23c23fb734bc10643a06f2d78@gritton.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <7fbd35d23c23fb734bc10643a06f2d78@gritton.org>
User-Agent: Mutt/1.5.24 (2015-08-30)
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.21
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions/>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 30 Mar 2016 14:55:54 -0000

James Gritton [2016-03-30 07:47 -0600] :

> Niklaas Baudet von Gersdorff <stdin@niklaas.eu> wrote:
> 
> >     host.hostname = "$name.box-fra-01.klaas";
> >     path          = "/usr/local/jails/$name";
> >     ip4.addr      = "lo1|10.15.$network.$id";
> >     ip6.addr      = "vtnet0|2a00:XXX:XXXX:XXXX:X::$network:$id";
> >     mount         = "/usr/local/jails/templates/base-10.2-RELEASE 
> > /usr/local/jails/$name/     nullfs ro 0 0";
> >     mount        += "/usr/local/jails/thinjails/$name             
> > /usr/local/jails/$name/jail nullfs rw 0 0";
> >     mount.devfs;
> > 
> >     exec.start    = "/bin/sh /etc/rc";
> >     exec.stop     = "/bin/sh /etc/rc.shutdown";
> > 
> >     exec.clean;
> > 
> >     www {
> >         $id            = 1;
> >         $network       = 1;
> >         exec.poststart = "pfctl -t www -T add ${ip4.addr} {$ip6.addr}";
> >         exec.poststop  = "pfctl -t www -T delete {$ip4.addr} {$ip6.addr}";
> > }

> The problem is pretty simple - just a case of moving some brackets.  In 
> the definition of exec.poststart, you did ip4.addr right - ${ip4.addr}.  
> But for ip6.addr, you moved the dollar sign inside the braces - 
> {$ip6.addr}.  That makes it look like the braces and the ".addr" are 
> just part of the string, and only $ip6 is the variable to be 
> substituted.
> 
> So all you need is:
> 
>          exec.poststart = "pfctl -t www -T add ${ip4.addr} ${ip6.addr}";
>          exec.poststop  = "pfctl -t www -T delete ${ip4.addr} 
> ${ip6.addr}";

Indeed, that was it. Thanks. Four eyes see more than two. Anyway, that leaves
me with the problem that the variables expand to lo1|something and
vtnet0|something. I tried to set custom variables but that's not possible, is
it?