Re: Autopilot, a module for remotely doing things

[Brugnara Daniele]

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 <address@hidden> wrote:

On Wed, Dec 3, 2014 at 11:18 AM, Brugnara Daniele <address@hidden> wrote:
> This seems a very nice feature but I'm unable to make it work. I'm having
> this error:
>
> address@hidden:/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 <address@hidden>
> wrote:
>>
>> On Tue, Dec 2, 2014 at 7:22 PM, Brugnara Daniele <address@hidden>
>> 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 <address@hidden>
>> > 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
>> > address@hidden
>> > https://lists.gnu.org/mailman/listinfo/grub-devel
>> >