[Rack] doorport - do you know how the door opener works?

[Danny O'Brien]

So one of the issues Zephyr and I have been talking about (in a slightly
different context), is having a publicly documented, stable(ish) REST API
for stuff at Noisebridge.

I don't think this really impinges much on this low level stuff, but it
might make sense to have a higher-level interface that doesn't depend so
much on an individual implementation.

I'll stick it on the socialengineering agenda and hack on it tonight.

d.


On Tue, Dec 6, 2011 at 12:35 PM, Jonathan Lassoff <jof at thejof.com> wrote:

> On Tue, Dec 6, 2011 at 10:34 AM, Jonathan Lassoff <jof at thejof.com> wrote:
>
>> On Tue, Dec 6, 2011 at 2:21 AM, Jake <jake at spaz.org> wrote:
>>
>>> There is no need for an ethernet-powered arduino or another pc, because
>>> now the door is connected to a usb parallel port on minotaur.
>>>
>>> I promise there will be no complications or electrical nasties related
>>> to the long wires.
>>>
>>> please put any info or code you have on the wiki page so it's more easy
>>> to collaborate on this thing.  Also miloh says to ask you for access to
>>> stallion or minotaur or whatever.  i think i'm already on pony.  I want
>>> someone to test stuff.
>>
>>
>> Miloh, you already have an account on minotaur. Let me know if you need
>> an SSH key pushed, or something.
>>
>> Jake, what is the difference between
>> https://www.noisebridge.net/wiki/User:Jake and
>> https://www.noisebridge.net/wiki/User:Jerkey
>>
>> Do you want your SSH key for "jake" pushed to minotaur?
>>
>
> I put the two most-helpful tools for dealing with the hardware on minotaur:
>  - /usr/local/sbin/open-door (a setuid root binary that "buzzes" open the
> door with the parallel port hardware)
>  - /usr/local/sbin/parport_daemon (a setuid binary that takes control of
> the parallel port, starts listening on UDP 0.0.0.0:30012, and talks a
> simple protocol to query the state of the ringer and open the gate)
>
> Personally, I'd like to use the parport_daemon program going forward,
> though most of the scripts others use are not setup to use it just yet. The
> protocol is dead simple. Ask it "Sup?" and it will respond with "Nothing."
> (nobody's ringing) or "RING!" (someone is or just rang the gate buzzer). If
> you send it "OPEN!" it will respond "Acknowledged. Buzzing it open."
> (buzzes open the door) or "Already opened recently." (if someone beat you
> to it -- there's a timeout to avoid wailing on the solenoid).
>
> So, to open the gate from pony, one could do something like: echo -n
> 'OPEN!' | socat stdio udp4:minotaur.noise:30012
> I should probably make a wrapper script or controller around that next.
>
> I'm also thinking it would be cute to have the computer hosting the daemon
> to also announce a Zeroconf/Avahi service records for the door. Maybe
> _door._udp?
>
> Cheers,
> jof
>
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