[Pkg-utopia-maintainers] [Pkg-bluetooth-maintainers] Bug#510644: bluetooth.conf needs alterations for new D-Bus
Filippo Giunchedi
filippo at debian.org
Wed Jan 7 21:55:56 UTC 2009
On Wed, Jan 07, 2009 at 07:17:35PM +0000, Simon McVittie wrote:
> On Mon, 05 Jan 2009 at 23:32:50 +0100, Filippo Giunchedi wrote:
> > On Mon, Jan 05, 2009 at 08:32:58PM +0000, Simon McVittie wrote:
> > > > <allow send_interface="org.bluez.Agent"/>
> > >
> > > That will work but is not ideal; D-Bus upstream opinion seems to be that
> > > a bare "send_interface" without a corresponding send_destination is
> > > almost always an error (because it matches the corresponding interface on
> > > completely unrelated processes). Do Agent implementations have a well-known
> > > service name you can use?
> > >
> > > Failing that, maybe you could at least match on object path as well as
> > > on interface?
> >
> > Unfortunately they don't a well known service name nor object path, agents are
> > user-registered
>
> Never mind. We have a lot of these rules in the archive anyway
> (http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=pkg-utopia-maintainers@lists.alioth.debian.org&tag=fdo-18961)
> and as far as I can tell it's not a release-critical bug, particularly
> as an <allow> rule... so leave it like that unless D-Bus upstream can
> explain something better.
>
> > > Debian packages usually have a dual at_console/group-based policy for device
> > > accesses like this (e.g. members of powerdev and netdev can use various
> > > interfaces on hal even if they are not at_console), by duplicating the
> > > permissions of the at_console <policy> into a separate group policy. See
> > > NetworkManager's configuration in Debian, for instance.
> >
> > Okay, given that using AF_BLUETOOTH sockets requires CAP_NET_ADMIN for some
> > ioctls I'd go for netdev group, makes sense?
>
> netdev sounds the most appropriate, yes. avahi-daemon has some suitable
> postinst snippets to create the group if necessary, before telling D-Bus
> to reload:
okay, thanks, I'll put a note in NEWS.Debian too
[...]
> Apparently at_console works (or at least, can be made to work) if you have
> ConsoleKit installed, so you should have two <policy> sections, one for
> at_console and one for netdev, containing the same <allow> rules.
>
> Please go ahead with the unstable upload, but also attach the resulting
> bluetooth.conf to this bug so I can review it.
attached, note that I used AuthorizationAgent and PasskeyAgent interfaces
because that's what bluez 3.x uses while 4.x has Agent interface
filippo
--
Filippo Giunchedi - http://esaurito.net
PGP key: 0x6B79D401
random quote follows:
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-- Groucho Marx
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<!-- This configuration file specifies the required security policies
for Bluetooth core daemon to work. -->
<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
<!-- ../system.conf have denied everything, so we just punch some holes -->
<policy user="root">
<allow own="org.bluez"/>
<allow send_destination="org.bluez"/>
<allow send_interface="org.bluez.PasskeyAgent"/>
<allow send_interface="org.bluez.AuthorizationAgent"/>
</policy>
<policy at_console="true">
<allow send_destination="org.bluez"/>
</policy>
<policy group="netdev">
<allow send_destination="org.bluez"/>
</policy>
</busconfig>
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