.dotfiles/home/bin/kupdatesd

#!/usr/bin/perl

# --- This script is no longer maintained. ---
# It has been replaced by the Python version, pyupdatesd. The Python version
# requires only pygtk2, which tends to come preinstalled on Fedora XFCE spins,
# and is therefore much simpler to get set up. :)
#
# http://sh.kirsle.net/pyupdatesd
# --------------------------------------------

# kupdatesd - A simple yum update checker.
#
# This script will watch for available yum updates and show a GTK+ TrayIcon
# and notification pop-up when updates become available.
#
# This is intended for desktop environments like XFCE that don't have a native
# PackageKit update watcher.
#
# Set this script to run on session startup and it will check for updates every
# 5 minutes (by default; this is configurable in the source code).
#
# --Kirsle
# http://sh.kirsle.net

use 5.14.0;
use strict;
use warnings;
use Gtk2 -init;
use Gtk2::TrayIcon;
use Gtk2::Notify -init, "kupdatesd";

$SIG{HUP} = $SIG{TERM} = sub {
	exec($0);
};

################################################################################
# Configuration Section                                                        #
################################################################################

my %c = (
	# The title to be shown on the pop-up and the icon tooltip.
	title    => "Updates Available",

	# The message to be shown in the pop-up.
	message  => "There are updates ready to install.",

	# The icon to use for the pop-up and tray icon.
	icon     => '/usr/share/icons/gnome/32x32/status/software-update-available.png',

	# How often to check for updates (in seconds).
	interval => 900,

	# The path to your yum binary.
	yum      => '/usr/bin/yum',

	# The path to your graphical updater.
	# gpk-update-viewer is provided by gnome-packagekit
	gui      => '/usr/bin/yumex',
);

################################################################################
# End Configuration Section                                                    #
################################################################################

# Gtk objects
my ($icon, $image, $eventbox, $tooltip, $notify);
my $visible = 0; # Icon is currently being displayed?

# Enter the main loop.
my $check = time() + $c{interval};
while (1) {
	select(undef,undef,undef,0.1);

	# Keep Gtk2 active.
	if (defined $icon) {
		Gtk2->main_iteration while Gtk2->events_pending;
	}

	if (time() > $check) {
		# Look for updates.
		system("$c{yum} check-update > /dev/null 2>&1");
		if (!$visible && $? >> 8 == 100) {
			say "There are updates available!";
			show_icon();
		}
		elsif ($visible && $? == 0) {
			# Updates have gone away behind our back!
			$icon->hide;
			$visible = 0;
		}

		# Queue another check.
		$check = time() + $c{interval};
	}
}

sub show_icon {
	# Already initialized this once before?
	if (defined $icon) {
		# Just show the icon and notification again.
		$icon->show_all;
		$notify->show;
		$visible = 1;
		return;
	}

	# Tray icon. Image goes in EventBox, EventBox goes inside TrayIcon.
	$icon = Gtk2::TrayIcon->new("kupdatesd");
	$image = Gtk2::Image->new_from_file($c{icon});
	$eventbox = Gtk2::EventBox->new;
	$eventbox->add($image);
	$icon->add($eventbox);
	$icon->show_all;

	# Attach the tooltip.
	$tooltip = Gtk2::Tooltips->new;
	$tooltip->set_tip($icon, $c{title});

	$eventbox->signal_connect("button_press_event", sub {
		$icon->hide;
		$visible = 0;
		system($c{gui});
	});

	$notify = Gtk2::Notify->new(
		$c{title},
		$c{message},
		$c{icon},
	);
	$notify->show;
	$visible = 1;
}