/usr/share/system-config-printer/OpenPrintingRequest.py is in system-config-printer-gnome 1.5.7+20160212-0ubuntu2.
This file is owned by root:root, with mode 0o644.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | #!/usr/bin/python
## system-config-printer
## Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Red Hat, Inc.
## Authors:
## Tim Waugh <twaugh@redhat.com>
## Till Kamppeter <till.kamppeter@gmail.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.
# config is generated from config.py.in by configure
import config
import cupshelpers
from debug import *
from gi.repository import GObject
class OpenPrintingRequest(GObject.GObject):
__gsignals__ = {
'finished': (GObject.SignalFlags.RUN_LAST, None,
(
# list of (printerid,name) tuples
GObject.TYPE_PYOBJECT,
# dict of printerid: dict of drivername: dict
# for driver info
GObject.TYPE_PYOBJECT,
)),
'error': (GObject.SignalFlags.RUN_LAST, None,
(
# HTTP status
int,
GObject.TYPE_PYOBJECT,
)),
}
def __init__ (self, **args):
GObject.GObject.__init__ (self)
debugprint ("Starting")
self.openprinting = cupshelpers.openprinting.OpenPrinting (**args)
self._handle = None
debugprint ("+%s" % self)
def __del__ (self):
debugprint ("-%s" % self)
def cancel (self):
debugprint ("%s: cancel()" % self)
if self._handle is not None:
self.openprinting.cancelOperation (self._handle)
self._handle = None
debugprint ("%s -> 'error'" % self)
self.emit ('error', 0, 'canceled')
def searchPrinters (self, searchterm, user_data=None):
debugprint ("%s: searchPrinters()" % self)
self._handle = self.openprinting.searchPrinters (searchterm,
self._printers_got,
user_data)
def _printers_got (self, status, user_data, printers):
self._handle = None
if status != 0:
debugprint ("%s -> 'error'" % self)
self.emit ('error', status, printers)
return
self.downloadable_printers_unchecked = [(x, printers[x])
for x in printers]
self.downloadable_printers = []
self.downloadable_drivers = dict() # by printer id of dict
# Kick off a search for drivers for each model.
if not self._query_next_printer ():
self._drivers_got ()
def _query_next_printer (self):
"""
If there are more printers to query, kick off a query and
return True.
Otherwise return False.
"""
try:
user_data = self.downloadable_printers_unchecked.pop ()
(printer_id, printer_name) = user_data
except IndexError:
debugprint ("%s: All printer driver queries finished" % self)
return False
if config.DOWNLOADABLE_ONLYFREE:
self.openprinting.onlyfree = 1
else:
self.openprinting.onlyfree = 0
options = dict()
if config.DOWNLOADABLE_ONLYPPD:
options['onlyppdfiles'] = '1'
else:
options['onlydownload'] = '1'
options['packagesystem'] = config.packagesystem
debugprint ("%s: Querying drivers for %s" % (self, printer_id))
self._handle = self.openprinting.listDrivers (printer_id,
self._printer_drivers_got,
user_data=user_data,
extra_options=options)
return True
def _printer_drivers_got (self, status, user_data, drivers):
self._handle = None
if status != 0:
debugprint ("%s -> 'error'" % self)
self.emit ('error', status, drivers)
return
if drivers:
debugprint ("%s: - drivers found" % self)
drivers_installable = { }
for driverkey in drivers.keys ():
driver = drivers[driverkey]
if (('ppds' in driver and
len(driver['ppds']) > 0) or
(not config.DOWNLOADABLE_ONLYPPD and
'packages' in driver and
len(driver['packages']) > 0)):
# Driver entry with installable resources (Package or
# PPD), overtake it
drivers_installable[driverkey] = drivers[driverkey]
else:
debugprint ("Not using invalid driver entry %s" %
driverkey)
if len(drivers_installable) > 0:
debugprint ("%s: - drivers with installable resources found" %
self)
(printer_id, printer_name) = user_data
self.downloadable_drivers[printer_id] = drivers_installable
self.downloadable_printers.append (user_data)
if not self._query_next_printer ():
self._drivers_got ()
def _drivers_got (self):
self._handle = None
debugprint ("%s -> 'finished'" % self)
self.emit ('finished',
self.downloadable_printers,
self.downloadable_drivers)
if __name__ == '__main__':
from pprint import pprint
mainloop = GObject.MainLoop ()
set_debugging (True)
cupshelpers.set_debugprint_fn (debugprint)
req = OpenPrintingRequest ()
handlers = []
def done (obj):
for handler in handlers:
obj.disconnect (handler)
GObject.timeout_add_seconds (1, mainloop.quit)
def error (obj, status, err):
print ("Error: %d" % status)
print (repr (err))
done (obj)
def finished (obj, printers, drivers):
pprint (printers)
pprint (drivers)
done (obj)
handlers.append (req.connect ('error', error))
handlers.append (req.connect ('finished', finished))
GObject.idle_add (req.searchPrinters, 'ricoh 8000')
mainloop.run ()
del req
|