Re: Connecting open network with nmcli is working even while providing password

[Alexis Lothoré <alexis lothore gmail com>]

Hi Thomas,
thank you for your answer and the link provided. So it seems that it
is desired behavior, and that the provided password is ignored if not
needed. I will then adapt my binary to provide the behavior I am
expecting (password provided on open access point => no connection try
initiated)
About the PR you have linked, if I understand well, it provides
connection mechanism with existing NetworkManager configuration
(/etc/NetworkManager/system-connections) and to avoid duplicates (AP,
AP 1, AP 2, AP 3, etc). I have no specific opinion about this, since
my target is an embedded device with very specific application, I am
used to wipe any remaining network configuration before trying to
initiate a new one. But in the mean time, as a desktop version of
Network Manager user, it looks like a good improvement to avoid the
lot of duplicates (which I observe on my computer)
Regards,




2018-06-20 17:14 GMT+02:00 Thomas Haller <thaller redhat com>:
> On Wed, 2018-06-20 at 16:57 +0200, Alexis Lothoré via networkmanager-
> list wrote:
> > Hello,
> > I am currently working on a Linux-based embedded device, which
> > heavily
> > relies on Network Manager for the connectivity side. I am using nmcli
> > to manage some parts of the connectivity. The firmware is generated
> > with buildroot 2018.02, so Network Manager is on version 1.10. My
> > issue is the following : I have set an access point with the
> > following
> > parameters : SSID set to "Negative, no security, beacon interval set
> > to 100, channel set to 6.
> > I am trying to connect this access point with the following command :
> > nmcli dev wifi connect Negative password 123456789. Since security is
> > disabled on my access point, I expect this command to fail (I should
> > have called "nmcli dev wifi connect Negative").
> >
> > However, the connection process goes smoothly and NetworkManager
> > manages to connect to my AP :
>
> Hi,
>
>
> if you look at
> https://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/clients/cli/devices.c?id=94200b03fe483f9d0df87483fa2f30301e2b9f31#n3258
> you'll see, that the password is ignored by nmcli in case the AP has no
> security.
>
> Whether that is a bug or intended behavior, is up for discussion. Why
> would it be better to error out in this case?
>
>
> On an unrelated note: since you are using `nmcli device wifi connect`,
> have a look at
> https://github.com/NetworkManager/NetworkManager/pull/137
> would that change be a problem for you? Or desired?
>
>
>
> best,
> Thomas



-- 
Alexis Lothoré
06.51.59.81.45