#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# (c) Copyright 2003-2015 HP Development Company, L.P.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Author: Don Welch
__version__ = '2.0'
__mod__ = 'hp-systray'
__title__ = 'System Tray Status Service'
__doc__ = "System Tray monitors the HP device status and Displays"
# StdLib
import sys
import os
import getopt
import signal
# Local
from base.g import *
from base import utils, module
from prnt import cups
if __name__ == '__main__':
# Create a new session ID for the tray. This disassociates the
# tray from the controlling terminal so that it cannot receive
# keyboard interrupts.
#
# Only do this if we aren't already a session leader. This test
# only succeeds if we are executed from hp-toolbox.
if os.getpgid(os.getpid()) != os.getpid():
os.setsid()
mod = module.Module(__mod__, __title__, __version__, __doc__, None,
(GUI_MODE,), (UI_TOOLKIT_QT5, UI_TOOLKIT_QT4, UI_TOOLKIT_QT3))
mod.setUsage(module.USAGE_FLAG_NONE,
extra_options=[("Startup even if no hplip CUPS queues are present:", "-x or --force-startup", "option", False)])
opts, device_uri, printer_name, mode, ui_toolkit, lang = \
mod.parseStdOpts('x', ['force-startup','ignore-update-firsttime'], False)
# ignore-update-firsttime is required. ui/systemtray and ui4/systemtray will read this value using sys.args.
force_startup = False
for o, a in opts:
if o in ('-x', '--force-startup'):
force_startup = True
if os.getuid() == 0:
log.error("hp-systray cannot be run as root. Exiting.")
sys.exit(1)
if ui_toolkit == 'qt3':
if not utils.canEnterGUIMode():
log.error("%s requires Qt3 GUI and DBus support. Exiting." % __mod__)
sys.exit(1)
else:
if not utils.canEnterGUIMode4():
log.error("%s requires Qt4 GUI and DBus support. Exiting." % __mod__)
sys.exit(1)
if not force_startup:
# Check for any hp: or hpfax: queues. If none, exit
if not utils.any([p.device_uri for p in cups.getPrinters()], lambda x : x.startswith('hp')):
log.warn("No hp: or hpfax: devices found in any installed CUPS queue. Exiting.")
sys.exit(1)
mod.lockInstance()
r1, w1 = os.pipe()
log.debug("Creating pipe: hpssd (%d) ==> systemtray (%d)" % (w1, r1))
parent_pid = os.getpid()
try:
child_pid1 = os.fork()
except BlockingIOErrror as e:
log.error("hp-systray: error during fork - %s" % e)
os.close(w1)
os.close(r1)
mod.unlockInstance()
sys.exit(1)
if child_pid1:
# parent (UI)
os.close(w1)
if ui_toolkit == 'qt3':
try:
import ui.systemtray as systray
except ImportError:
log.error("Unable to load Qt3 support. Is it installed?")
sys.exit(1)
else: # qt4
try:
if ui_toolkit == "qt4":
import ui4.systemtray as systray
elif ui_toolkit == "qt5":
import ui5.systemtray as systray
except ImportError as e:
log.error(e)
log.error("Unable to load Qt4/Qt5 support. Is it installed?")
mod.unlockInstance()
sys.exit(1)
try:
systray.run(r1)
finally:
mod.unlockInstance()
else:
# child (dbus & device i/o [qt4] or dbus [qt3])
os.close(r1)
if ui_toolkit in ('qt4', 'qt5'):
r2, w2 = os.pipe()
r3, w3 = os.pipe()
log.debug("Creating pipe: hpssd (%d) ==> hpdio (%d)" % (w2, r2))
log.debug("Creating pipe: hpdio (%d) ==> hpssd (%d)" % (w3, r3))
child_pid2 = os.fork()
if child_pid2:
# parent (dbus)
os.close(r2)
import hpssd
hpssd.run(w1, w2, r3)
else:
# child (device i/o)
os.close(w2)
import hpdio
hpdio.run(r2, w3)
else: # qt3
import hpssd
hpssd.run(w1)
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