Re: No new PIN request to the user if PIN stored in settings is wrong

[Aleksander Morgado <aleksander aleksander es>]

> > > I'm trying to understand whether this behavior is on purpose or
> > > not.
> > >
> > > I have some "gsm" settings for a broadband connection, and the
> > > settings have a PIN stored. I then try to use those settings on a
> > > modem device but the expected PIN in the modem is a different one,
> > > so
> > > the connection attempt fails with a "sim-pin-incorrect" reason. At
> > > this point NetworkManager doesn't request the user new secrets for
> > > this connection after finding that the stored ones are wrong; i.e.
> > > i
> > > don't see any popup window in the shell asking to enter PIN. The
> > > connection attempt just fails and we do get reported in the UI
> > > about
> > > the failed attempt.
> > >
> > > Is this behavior (asking the user for PIN after a "sim-pin-
> > > incorrect"
> > > failure) not implemented or am I missing some reason that would
> > > prevent doing that? The behavior is different e.g. with WiFi; if I
> > > change the key in my router and I request NM to connect to the WiFi
> > > network, the authentication failure triggers a new request for
> > > secrets
> > > to the user.
> > >
> > > Cheers!
> >
> >
> > Hi,
> >
> >
> > sounds like a bug. If a secret/pin is wrong, NM should re-ask for it.
>
> We do have to be careful here, because by the time NM asks for the PIN,
> we've already tried the stored PIN once, and if the user enters the
> wrong pin in the dialog you have one try left before the PIN is
> blocked.  And then you have to find your PUK which often isn't right
> next to you.

In the network-manager-applet days, we had the SIM-PIN unlocking
dialog glued out of NetworkManager, so I understand this lack of
re-asking the user was due to that, as the applet would detect the
lock and trigger the user dialog. In that SIM-PIN unlocking dialog we
could also do SIM-PUK unlocking if needed via the UI, and I don't
really recall if we had remaining attempts shown

When using gnome-shell, the SIM-PIN unlocking is only done through NM
asking for secrets, there is no dedicated SIM-PIN unlocking dialog
showing remaining attempts, and there is no way to unlock SIM-PUK
through the UI. I discussed this a very long time ago with aday trying
to draft a way to integrate this in the shell, but I think that we
both lost interest about the problem, maybe it's time to revisit this.

-- 
Aleksander
https://aleksander.es