/usr/share/system-config-printer/applet.py is in system-config-printer-gnome 1.5.7+20160212-0ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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## Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Red Hat, Inc.
## Author: Tim Waugh <twaugh@redhat.com>
## 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
import cups
from functools import reduce
cups.require ("1.9.42")
import sys
from debug import *
import dbus
import dbus.glib
import dbus.service
from gi.repository import GObject
from gi.repository import GLib
import time
import locale
import cupshelpers.installdriver
DOMAIN="system-config-printer"
import gettext
gettext.install(domain=DOMAIN)
try:
locale.setlocale (locale.LC_ALL, "")
except locale.Error as e:
import os
os.environ['LC_ALL'] = 'C'
locale.setlocale (locale.LC_ALL, "")
from gi.repository import Notify
APPDIR="/usr/share/system-config-printer"
ICON="printer"
# We need to call Notify.init before we can check the server for caps
Notify.init('System Config Printer Notification')
# D-Bus APIs of other objects we'll use.
PRINTING_BUS="org.fedoraproject.Config.Printing"
PRINTING_PATH="/org/fedoraproject/Config/Printing"
PRINTING_IFACE="org.fedoraproject.Config.Printing"
NEWPRINTERDIALOG_IFACE=PRINTING_IFACE + ".NewPrinterDialog"
PRINTERPROPERTIESDIALOG_IFACE=PRINTING_IFACE + ".PrinterPropertiesDialog"
####
#### NewPrinterNotification DBus server (the 'new' way).
####
PDS_PATH="/com/redhat/NewPrinterNotification"
PDS_IFACE="com.redhat.NewPrinterNotification"
PDS_OBJ="com.redhat.NewPrinterNotification"
class NewPrinterNotification(dbus.service.Object):
STATUS_SUCCESS = 0
STATUS_MODEL_MISMATCH = 1
STATUS_GENERIC_DRIVER = 2
STATUS_NO_DRIVER = 3
def __init__ (self, system_bus, session_bus):
self.system_bus = system_bus
self.session_bus = session_bus
self.getting_ready = 0
bus_name = dbus.service.BusName (PDS_OBJ, bus=system_bus)
dbus.service.Object.__init__ (self, bus_name, PDS_PATH)
self.notification = None
@dbus.service.method(PDS_IFACE, in_signature='', out_signature='')
def GetReady (self):
TIMEOUT=1200000
if self.getting_ready == 0:
n = Notify.Notification.new (_("Configuring new printer"),
_("Please wait..."),
'printer')
n.set_timeout (TIMEOUT + 5000)
n.closed = False
n.connect ('closed', self.on_notification_closed)
n.show ()
self.notification = n
self.getting_ready += 1
GLib.timeout_add_seconds (TIMEOUT, self.timeout_ready)
def on_notification_closed (self, notification):
notification.closed = True
def timeout_ready (self):
if self.getting_ready > 0:
self.getting_ready -= 1
if (self.getting_ready == 0 and
self.notification and
not getattr (self.notification, 'closed', None)):
self.notification.close ()
return False
@dbus.service.method(PDS_IFACE, in_signature='isssss', out_signature='')
def NewPrinter (self, status, name, mfg, mdl, des, cmd):
if name.find("/") >= 0:
# name is a URI, no queue was generated, because no suitable
# driver was found
title = _("Missing printer driver")
devid = "MFG:%s;MDL:%s;DES:%s;CMD:%s;" % (mfg, mdl, des, cmd)
if (mfg and mdl) or des:
if (mfg and mdl):
device = "%s %s" % (mfg, mdl)
else:
device = des
text = _("No printer driver for %s.") % device
else:
text = _("No driver for this printer.")
n = Notify.Notification.new (title, text, 'printer')
if "actions" in Notify.get_server_caps():
n.set_urgency (Notify.Urgency.CRITICAL)
n.set_timeout (Notify.EXPIRES_NEVER)
n.add_action ("setup-printer", _("Search"),
lambda x, y:
self.setup_printer (x, y, name, devid))
else:
self.setup_printer (None, None, name, devid)
else:
# name is the name of the queue which hal_lpadmin has set up
# automatically.
c = cups.Connection ()
try:
printer = c.getPrinters ()[name]
except KeyError:
return
try:
filename = c.getPPD (name)
except cups.IPPError:
return
del c
# Check for missing packages
cups.ppdSetConformance (cups.PPD_CONFORM_RELAXED)
ppd = cups.PPD (filename)
import os
os.unlink (filename)
import sys
sys.path.append (APPDIR)
import cupshelpers
(missing_pkgs,
missing_exes) = cupshelpers.missingPackagesAndExecutables (ppd)
from cupshelpers.ppds import ppdMakeModelSplit
(make, model) = ppdMakeModelSplit (printer['printer-make-and-model'])
driver = make + " " + model
if status < self.STATUS_GENERIC_DRIVER:
title = _("Printer added")
else:
title = _("Missing printer driver")
if len (missing_pkgs) > 0:
pkgs = reduce (lambda x,y: x + ", " + y, missing_pkgs)
title = _("Install printer driver")
text = (_("`%s' requires driver installation: %s.") %
(name, pkgs))
n = Notify.Notification.new (title, text, 'printer')
import installpackage
if "actions" in Notify.get_server_caps():
try:
self.packagekit = installpackage.PackageKit ()
n.set_timeout (Notify.EXPIRES_NEVER)
n.add_action ("install-driver", _("Install"),
lambda x, y:
self.install_driver (x, y,
missing_pkgs))
except:
pass
else:
try:
self.packagekit = installpackage.PackageKit ()
self.packagekit.InstallPackageName (0, 0,
missing_pkgs[0])
except:
pass
elif status == self.STATUS_SUCCESS:
devid = "MFG:%s;MDL:%s;DES:%s;CMD:%s;" % (mfg, mdl, des, cmd)
text = _("`%s' is ready for printing.") % name
n = Notify.Notification.new (title, text, 'printer')
if "actions" in Notify.get_server_caps():
n.set_urgency (Notify.Urgency.NORMAL)
n.add_action ("test-page", _("Print test page"),
lambda x, y:
self.print_test_page (x, y, name))
n.add_action ("configure", _("Configure"),
lambda x, y: self.configure (x, y, name))
else: # Model mismatch
devid = "MFG:%s;MDL:%s;DES:%s;CMD:%s;" % (mfg, mdl, des, cmd)
text = (_("`%s' has been added, using the `%s' driver.") %
(name, driver))
n = Notify.Notification.new (title, text, 'printer')
if "actions" in Notify.get_server_caps():
n.set_urgency (Notify.Urgency.CRITICAL)
n.add_action ("test-page", _("Print test page"),
lambda x, y:
self.print_test_page (x, y, name, devid))
n.add_action ("find-driver", _("Find driver"),
lambda x, y:
self.find_driver (x, y, name, devid))
n.set_timeout (Notify.EXPIRES_NEVER)
else:
self.configure (None, None, name)
self.timeout_ready ()
n.show ()
self.notification = n
def print_test_page (self, notification, action, name):
path = self.configure (None, None, name)
obj = self.session_bus.get_object (PRINTING_BUS, path)
iface = dbus.Interface (obj, PRINTERPROPERTIESDIALOG_IFACE)
iface.PrintTestPage ()
def configure (self, notification, action, name):
obj = self.session_bus.get_object (PRINTING_BUS, PRINTING_PATH)
iface = dbus.Interface (obj, PRINTING_IFACE)
return iface.PrinterPropertiesDialog (dbus.UInt32(0), name)
def get_newprinterdialog_interface (self):
obj = self.session_bus.get_object (PRINTING_BUS, PRINTING_PATH)
iface = dbus.Interface (obj, PRINTING_IFACE)
path = iface.NewPrinterDialog ()
obj = self.session_bus.get_object (PRINTING_BUS, path)
iface = dbus.Interface (obj, NEWPRINTERDIALOG_IFACE)
return iface
def ignore_dbus_replies (self, *args):
pass
def find_driver (self, notification, action, name, devid = ""):
try:
iface = self.get_newprinterdialog_interface ()
iface.ChangePPD (dbus.UInt32(0), name, devid,
reply_handler=self.ignore_dbus_replies,
error_handler=self.ignore_dbus_replies)
except dbus.DBusException:
pass
def setup_printer (self, notification, action, uri, devid = ""):
try:
iface = self.get_newprinterdialog_interface ()
iface.NewPrinterFromDevice (dbus.UInt32(0), uri, devid,
reply_handler=self.ignore_dbus_replies,
error_handler=self.ignore_dbus_replies)
except dbus.DBusException:
pass
def install_driver (self, notification, action, missing_pkgs):
try:
self.packagekit.InstallPackageName (0, 0, missing_pkgs[0])
except:
pass
def collect_exit_code (self, pid):
# We do this with timers instead of signals because we already
# have GLib imported, but don't (yet) import signal;
# let's try not to inflate the process size.
import os
try:
print("Waiting for child %d" % pid)
(pid, status) = os.waitpid (pid, os.WNOHANG)
if pid == 0:
# Run this timer again.
return True
except OSError:
pass
return False
PROGRAM_NAME="system-config-printer-applet"
def show_help ():
print("usage: %s [--help|--version|--debug]" % PROGRAM_NAME)
def show_version ():
import config
print("%s %s" % (PROGRAM_NAME, config.VERSION))
####
#### Main program entry
####
def monitor_session (*args):
pass
def any_jobs ():
try:
c = cups.Connection ()
jobs = c.getJobs (my_jobs=True, limit=1)
if len (jobs):
return True
except:
pass
return False
class RunLoop:
DBUS_PATH="/com/redhat/PrinterSpooler"
DBUS_IFACE="com.redhat.PrinterSpooler"
def __init__ (self, session_bus, system_bus, loop):
self.system_bus = system_bus
self.session_bus = session_bus
self.loop = loop
self.timer = None
try:
system_bus.add_signal_receiver (self.handle_dbus_signal,
path=self.DBUS_PATH,
dbus_interface=self.DBUS_IFACE)
except dbus.DBusException as e:
try:
print ("%s: failed to add D-Bus signal receiver: %s" \
% (PROGRAM_NAME, e), file=sys.stderr)
finally:
sys.exit (1)
self.check_for_jobs ()
def remove_signal_receiver (self):
try:
self.system_bus.remove_signal_receiver (self.handle_dbus_signal,
path=self.DBUS_PATH,
dbus_interface=self.DBUS_IFACE)
except dbus.DBusException as e:
try:
print ("%s: failed to remove D-Bus signal receiver: %s" \
% (PROGRAM_NAME, e), file=sys.stderr)
except:
pass
def run (self):
self.loop.run ()
def __del__ (self):
self.remove_signal_receiver ()
if self.timer:
GLib.source_remove (self.timer)
def handle_dbus_signal (self, *args):
if self.timer:
GLib.source_remove (self.timer)
self.timer = GLib.timeout_add (200, self.check_for_jobs)
def check_for_jobs (self, *args):
debugprint ("checking for jobs")
if any_jobs ():
if self.timer is not None:
GLib.source_remove (self.timer)
self.remove_signal_receiver ()
# Start the job applet.
debugprint ("Starting job applet")
try:
obj = self.session_bus.get_object (PRINTING_BUS, PRINTING_PATH)
iface = dbus.Interface (obj, PRINTING_IFACE)
path = iface.JobApplet ()
debugprint ("Job applet is %s" % path)
except dbus.DBusException as e:
try:
print(e)
except:
pass
# Don't run this timer again.
return False
if __name__ == '__main__':
import sys, getopt
try:
opts, args = getopt.gnu_getopt (sys.argv[1:], '',
['debug',
'help',
'version'])
except getopt.GetoptError:
show_help ()
sys.exit (1)
for opt, optarg in opts:
if opt == "--help":
show_help ()
sys.exit (0)
if opt == "--version":
show_version ()
sys.exit (0)
elif opt == "--debug":
set_debugging (True)
# Must be done before connecting to D-Bus (for some reason).
if not Notify.init (PROGRAM_NAME):
try:
print(("%s: unable to initialize pynotify" %
PROGRAM_NAME), file=sys.stderr)
except:
pass
system_bus = session_bus = None
try:
system_bus = dbus.SystemBus()
except:
try:
print(("%s: failed to connect to system D-Bus" %
PROGRAM_NAME), file=sys.stderr)
finally:
sys.exit (1)
try:
session_bus = dbus.SessionBus()
# Stop running when the session ends.
session_bus.add_signal_receiver (monitor_session)
except:
try:
print(("%s: failed to connect to "
"session D-Bus" % PROGRAM_NAME), file=sys.stderr)
finally:
sys.exit (1)
try:
NewPrinterNotification(system_bus, session_bus)
except:
try:
print(("%s: failed to start "
"NewPrinterNotification service" %
PROGRAM_NAME), file=sys.stderr)
except:
pass
try:
cupshelpers.installdriver.set_debugprint_fn (debugprint)
cupshelpers.installdriver.PrinterDriversInstaller(system_bus)
except Exception as e:
try:
print(("%s: failed to start "
"PrinterDriversInstaller service: "
"%s" % (PROGRAM_NAME, e)), file=sys.stderr)
except:
pass
loop = GObject.MainLoop ()
runloop = RunLoop (session_bus, system_bus, loop)
try:
runloop.run ()
except KeyboardInterrupt:
pass
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