Re: Retrieving 'secret' setting

[Colin Helliwell <colin helliwell ln-systems com>]

> On 06 September 2017 at 17:18 Dan Williams <dcbw redhat com> wrote:
>
> On Wed, 2017-09-06 at 12:51 +0100, Colin Helliwell wrote:
>
> > > On 06 September 2017 at 11:14 Thomas Haller <thaller redhat com>
> > > wrote:
> > >
> > > On Wed, 2017-09-06 at 10:20 +0100, colin helliwell ln-systems com
> > > wrote:
> > >
> > > > I'm python-scripting to get a connection's gsm properties, and
> > > > want
> > > > to get
> > > > the password - which "c.for_each_setting_value(print_values,
> > > > None)"
> > > > seems to
> > > > not report (just "None").
> > > > What would be the technique to get it?
> > > > Thanks
> > >
> > > Hi,
> > >
> > > on D-Bus, secrets are exposed separately from regular properties of
> > > the
> > > connection.
> > >
> > > GetSettings() vs GetSecrets() in
> > > https://developer.gnome.org/NetworkManager/stable/gdbus-org.freedes
> > > ktop.NetworkManager.Settings.Connection.html
> > >
> > > Anyway, from libnm (and python gi) you would call
> > >
> > > secrets = remote_connection.get_secrets('ethernet')
> >
> > Great, got that. Now, don't suppose you could help me get to grips
> > with parsing the Glib.Variant....? ;)
>
> You can get around the need for touching GVariant by passing what you
> get from get_secrets() to NMConnection's replace_settings() call too.
> Then you get a nice NMConnection object, with only the secrets filled
> in. For example, pass a connection UUID as the argument to this:
>
> #!/usr/bin/env python
> import gi
> gi.require_version('NM', '1.0')
> from
> gi.repository import GLib, NM
> import sys
>
> client = NM.Client.new(None)
> c = client.get_connection_by_uuid(sys.argv[1])
> wifi_secrets = c.get_secrets(NM.SETTING_WIRELESS_SECURITY_SETTING_NAME)
> wifi_secrets_con = NM.SimpleConnection.new()
> wifi_secrets_con.replace_settings(wifi_secrets)
> wsec = wifi_secrets_con.get_setting_wireless_security()
> print "%s" % wsec.get_psk()

Thanks Dan, that gets it.
Now I'm struggling to *modify* the password.... :S   I see that I can do a
   settings.set_property(NM.SETTING_GSM_PASSWORD, "NewPw")
but unsure how to complete the updating. I found NM.Connection.replace_settings(), and update_secrets(), but 
both of those put me back into GVariant territory.
What would be the route to get the new password fed back through (presumably prior to finishing with a 
NM.RemoteConnection.save()/commit()?)