/usr/share/hplip/systray.py is in hplip-data 3.16.11+repack0-3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 | #!/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()
child_pid1 = os.fork()
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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