On Thu, Jul 15, 2021 at 11:27 AM <m...@mike.franken.de> wrote:
>
> On Donnerstag, 15. Juli 2021 06:45:06 CEST Andrei Borzenkov via
> networkmanager-list wrote:
> [...]
> > > #!/usr/bin/perl -w
> > >
> > > use strict;
> > >
> > > use Data::Dumper;
> > > $Data::Dumper::Sortkeys = 1;
> > > $Data::Dumper::Indent = 1;
> > > use Net::DBus;
> > > use Net::DBus::Dumper;
> > > use Net::DBus::Reactor;
> > >
> > > my $oBUS = Net::DBus->system || die $!;
> > > my $nm = "org.freedesktop.NetworkManager";
> > > my $oNM = $oBUS->get_service( $nm ) || die $!;
> > > my $nmobjpath = "/org/freedesktop/NetworkManager";
> > > my $nmif = "org.freedesktop.NetworkManager";
my $nmif = "org.freedesktop.DBus.Properties";
> > > my $oNMIF = $oNM->get_object( $nmobjpath, $nmif ) || die $!;
> > >
> > > $nmobjpath = "/org/freedesktop/NetworkManager/Settings";
> > > $nmif = "org.freedesktop.NetworkManager.Settings";
my $nmif = "org.freedesktop.DBus.Properties";
> > > my $oNMIFS = $oNM->get_object( $nmobjpath, $nmif ) || die $!;
> > >
> > > $oNMIF->connect_to_signal(
> > >
> > > "PropertiesChanged", sub {
> > >
> > > &{ \&dbnm_onNMPropertiesChanged }( $oNM, $oNMIF, $oNMIFS, @_ );
> > >
> > > }
> > >
> > > );
> > > my $reactor = Net::DBus::Reactor->main() || die $!;
> > > $reactor->run() || die $!;
> > >
> > > sub dbnm_onNMPropertiesChanged {
> > >
> > > my( $oNM, $oNMIF, $oNMIFS, $props ) = @_;
my( $oNM, $oNMIF, $oNMIFS, $interface, $props, $invalidated_props ) = @_;
> > > print "\n- props -\n", Dumper( $props ), "\n--\n";
> > >
> > > }
> >
> > NM PropertiesChanged and D-Bus
> > org.freedesktop.DBus.Properties.PropertiesChanged have different
> > signatures. You are dumping interface name, not properties dictionary.
>
> I am not sure, I understand this:
> The example above is the one for NetworkManager's PropertiesChanged signal.
> It worked perfectly as long as this signal existed.
>
If you replace NM signal with DBus signal you also need to change
handler to look for different parameter
> Besides that, what does "signature" mean in this context? Different
> parameters?
>
Yes.
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