Re: Autopilot, a module for remotely doing things

[Brugnara Daniele <daniele@brugnara.me>]

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I've tried a lot without success. There's no documentation about (http) in
exception for a little entry in this documentation (
https://www.gnu.org/software/grub/manual/html_node/Device-syntax.html)
where is said about it but no details on how to mount or use this "device".

What I have also tried is:

insmod net
insmod http

net_ls_addr (gives no results)

and any of this commands gives no results (http server is never called, I'm
sure about this)
source (http,http://192.168.1.70:1273)/
source (http:http://192.168.1.70:1273)/
source (http,192.168.1.70,1273)/
source (http:192.168.1.70:1273:/)
[...]

Am I missing something? The lack of documentation doesn't help on this.
Many thanks for your time.

On Wed Dec 03 2014 at 9:31:34 AM Andrei Borzenkov <arvidjaar@gmail.com>
wrote:

> On Wed, Dec 3, 2014 at 11:18 AM, Brugnara Daniele <daniele@brugnara.me>
> wrote:
> > This seems a very nice feature but I'm unable to make it work. I'm having
> > this error:
> >
> > root@hulk:/home/vrut/dev/grub# update-grub
> > /usr/sbin/grub-mkconfig: 34: /etc/default/grub: source: not found
> >
>
> source is grub command that should be executed at run time. If you
> want to use grub-mkconfig to add this command, see
> /etc/grub.d/40_custom
>
> > Am I missing something?
> >
> > On Wed Dec 03 2014 at 8:42:36 AM Andrei Borzenkov <arvidjaar@gmail.com>
> > wrote:
> >>
> >> On Tue, Dec 2, 2014 at 7:22 PM, Brugnara Daniele <daniele@brugnara.me>
> >> wrote:
> >> > Here I am again.. I'm studying grub code and thinking about this
> feature
> >> > we
> >> > are talking about.
> >> > A funny name could be "autopilot". I'm thinking this about a big
> >> > container
> >> > where to put more than a "pilot".
> >> >
> >> ...
> >> > Each pilot will do the very same thing: receive/read a small cfg file
> >> > and
> >> > GRUB will do what it must to do.
> >> >
> >>
> >> This does not need any module.
> >>
> >> source (http,server-or-IP)/extra.cfg
> >>
> >> enclose in "set check_signatures=enforce; ...; set check_signatures="
> >> to ensure file verification.
> >>
> >> > For a first release, it should be enough to pass:
> >> >
> >> > choice=1
> >> >
> >> > or
> >> >
> >> > choice=Windows 7 (64 bit)
> >> >
> >> > Why two HTTP?
> >> >
> >> > It's just an idea. We can think GRUB as a web service that allows it
> >> > self
> >> > being called from any application:
> >> >
> >> > POST grub.local:8080/api/autopilot [!DATA!]
> >> >
> >> > or see GRUB as a client that asks for a file to a centralized server:
> >> >
> >> > http://givemethatfile.please/aa:bb:cc:dd:ee:ff
> >> >
> >> > Security
> >> >
> >> > This is a very important thing. Any suggestion will be very
> appreciated.
> >> >
> >> > Pilots
> >> >
> >> > The first release, can have only one pilot. There's no need to develop
> >> > all 4
> >> > and more important, this four are not a final decision. Let's talk
> about
> >> > this.
> >> >
> >> > GRUB.cfg
> >> >
> >> > All informations about this module can be stored into grub.cfg or
> >> > better, a
> >> > specific autopilot.cfg but I do not want to add too much complexity.
> >> >
> >> > I'm thinking something about:
> >> >
> >> > [autopilot]
> >> > pilots_engaged = UDP[, HTTPSERVER[, SERIAL]]
> >> >
> >> > UDP.port = 1664
> >> > HTTPSERVER.port = 8080
> >> > SERIAL.port = /dev/ttyUSB0
> >> > SERIAL.conf = 57600 8N1
> >> > [...]
> >> >
> >> >
> >> > As always, let's talk about this :)
> >> >
> >> > Daniele.
> >> >
> >> >
> >> > On Sat Nov 29 2014 at 2:07:31 AM Brugnara Daniele <
> daniele@brugnara.me>
> >> > wrote:
> >> >>
> >> >> Hi all.
> >> >>
> >> >> I'm thinking about a system that boots with a wol packet. Who sends
> >> >> this
> >> >> packet in 99% of cases, is far away from that computer and it could
> be
> >> >> useful to boot into a different system instead of the default one.
> >> >> (please
> >> >> keep in mind that changing the default option in grub is not a option
> >> >> for
> >> >> this specific use case)
> >> >>
> >> >> If a wol can be delivered successfully, an UDP packet containing
> simple
> >> >> datas should be enough to achieve this.
> >> >>
> >> >> Something like this:
> >> >>
> >> >> - MAC: the destination device mac address
> >> >> - choice: a number (can be empty)
> >> >> - commandLine: a full commandline (a choice or this..)
> >> >> - more? I don't know for now..
> >> >>
> >> >> This option should be enabled in the grub.conf by the user.
> >> >>
> >> >> What do you think about? Could this be useful? Am I missing
> something,
> >> >> like a tool that does this automagically?
> >> >>
> >> >> I've read about an eth-to-serial but it's not what I want.
> >> >> PXE or bootp is not an option here. I don't want to manage another
> >> >> server...
> >> >>
> >> >> Thanks for your time.
> >> >>
> >> >> Daniele.
> >> >>
> >> >
> >> > _______________________________________________
> >> > Grub-devel mailing list
> >> > Grub-devel@gnu.org
> >> > https://lists.gnu.org/mailman/listinfo/grub-devel
> >> >
>

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