#!/usr/bin/python3 -sB
## udev-add-printer
## Copyright (C) 2009, 2010, 2014, 2015 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
import cupshelpers
import dbus
import os
import sys
import traceback
from syslog import *
from functools import reduce
MFG_BLACKLIST=[
"graphtec",
]
def create_queue (c, printers, name, device_uri, ppdname, info, installer):
# Make sure the name is unique.
namel = str (name.lower ())
unique = False
suffix = 1
while not unique:
unique = True
for printer in list(printers.values ()):
if (not printer.discovered and
((suffix == 1 and printer.name.lower () == namel) or
(suffix > 1 and
printer.name.lower () == namel + "-" + str (suffix)))):
unique = False
break
if not unique:
suffix += 1
if suffix == 100:
break
if suffix > 1:
name += "-" + str (suffix)
c.addPrinter (name,
device=device_uri,
ppdname=ppdname,
info=info,
location=os.uname ()[1])
if not installer:
# There is no session applet running to deal with installing
# drivers so there is a good chance that this queue won't work
# right now. If that's the case, delete it. The user can
# reconnect the printer when they log in, and everything will
# be set up correctly for them at that point.
try:
ppdfile = c.getPPD (name)
ppd = cups.PPD (ppdfile)
os.unlink (ppdfile)
(pkgs, exes) = cupshelpers.missingPackagesAndExecutables (ppd)
if pkgs or exes:
# There are filters missing. Delete the queue.
syslog (LOG_ERROR, "PPD %s requires %s" % (ppdname,
repr ((pkgs, exes))))
syslog (LOG_ERROR, "Deleting non-functional queue")
c.deletePrinter (name)
name = None
except cups.IPPError:
pass
except RuntimeError:
pass
if name:
cupshelpers.activateNewPrinter (c, name)
return name
def add_queue (device_id, device_uris, fax_basename=False):
"""
Create a CUPS queue.
device_id: the IEEE 1284 Device ID of the device to add a queue for.
device_uris: device URIs, best first, for this device
fax_basename: False if this is not a fax queue, else name prefix
"""
id_dict = cupshelpers.parseDeviceID (device_id)
if id_dict["MFG"].lower () in MFG_BLACKLIST:
syslog (LOG_DEBUG, "Ignoring blacklisted manufacturer %s", id_dict["MFG"])
return
syslog (LOG_DEBUG, "add_queue: URIs=%s" % device_uris)
installer = None
if fax_basename != False:
notification = None
else:
try:
bus = dbus.SystemBus ()
obj = bus.get_object ("com.redhat.NewPrinterNotification",
"/com/redhat/NewPrinterNotification")
notification = dbus.Interface (obj,
"com.redhat.NewPrinterNotification")
notification.GetReady ()
except dbus.DBusException as e:
syslog (LOG_DEBUG, "D-Bus method call failed: %s" % e)
notification = None
try:
obj = bus.get_object ("com.redhat.PrinterDriversInstaller",
"/com/redhat/PrinterDriversInstaller")
installer = dbus.Interface (obj,
"com.redhat.PrinterDriversInstaller")
except dbus.DBusException as e:
#syslog (LOG_DEBUG, "Failed to get D-Bus object for "
# "PrinterDriversInstaller: %s" % e)
pass
id_dict = cupshelpers.parseDeviceID (device_id)
if installer:
cmd = id_dict["CMD"]
if cmd:
cmd = reduce (lambda x, y: x + ',' + y, cmd)
else:
cmd = ""
try:
installer.InstallDrivers (id_dict["MFG"], id_dict["MDL"], cmd,
timeout=3600)
except dbus.DBusException as e:
syslog (LOG_DEBUG, "Failed to install drivers: %s" % repr (e))
c = cups.Connection ()
ppds = cupshelpers.ppds.PPDs (c.getPPDs ())
(status, ppdname) = ppds.getPPDNameFromDeviceID (id_dict["MFG"],
id_dict["MDL"],
id_dict["DES"],
id_dict["CMD"],
device_uris[0])
syslog (LOG_DEBUG, "PPD: %s; Status: %d" % (ppdname, status))
if status == 0:
# Think of a name for it.
name = id_dict["MDL"]
name = name.replace (" ", "-")
name = name.replace ("/", "-")
name = name.replace ("#", "-")
if fax_basename != False:
name = fax_basename + "-" + name
printers = cupshelpers.getPrinters (c)
uniquename = create_queue (c, printers, name, device_uris[0], ppdname,
"%s %s" % (id_dict["MFG"], id_dict["MDL"]),
installer)
if uniquename != None and fax_basename == False:
# Look for a corresponding fax queue. We can only
# identify these by looking for device URIs that are the
# same as this one but with a different scheme. If we
# find one whose scheme ends in "fax", use that as a fax
# queue. Note that the HPLIP backends do follow this
# pattern (hp and hpfax).
used_uris = [x.device_uri for x in list(printers.values ())]
for uri in device_uris[1:]:
if uri.find (":") == -1:
continue
(scheme, rest) = uri.split (":", 1)
if scheme.endswith ("fax"):
# Now see if the non-scheme parts of the URI match
# any of the URIs we were given.
for each_uri in device_uris:
if each_uri == uri:
continue
(s, device_uri_rest) = each_uri.split (":", 1)
if rest == device_uri_rest:
# This one matches. Check there is not
# already a queue using this URI.
if uri in used_uris:
break
try:
devices = c.getDevices(include_schemes=[scheme])
except TypeError:
# include_schemes requires pycups 1.9.46
devices = c.getDevices ()
device_dict = devices.get (uri)
if device_dict == None:
break
add_queue (device_dict.get ("device-id", ""),
[uri], fax_basename=uniquename)
else:
# Not an exact match.
uniquename = device_uris[0]
if uniquename != None and notification:
try:
cmd = id_dict["CMD"]
if cmd:
cmd = reduce (lambda x, y: x + ',' + y, cmd)
else:
cmd = ""
notification.NewPrinter (status, uniquename, id_dict["MFG"],
id_dict["MDL"], id_dict["DES"], cmd)
except dbus.DBusException as e:
syslog (LOG_DEBUG, "D-Bus method call failed: %s" % e)
if len (sys.argv) < 3:
print("Syntax: %s {Device ID} {Device URI} [other device URIs...]")
sys.exit (1)
openlog ("udev-add-printer", 0, LOG_LPR)
try:
add_queue (sys.argv[1], sys.argv[2:])
except SystemExit as e:
sys.exit (e)
except:
(type, value, tb) = sys.exc_info ()
tblast = traceback.extract_tb (tb, limit=None)
if len (tblast):
tblast = tblast[:len (tblast) - 1]
for line in traceback.format_tb (tb):
syslog (LOG_ERR, line.strip ())
extxt = traceback.format_exception_only (type, value)
syslog (LOG_ERR, extxt[0].strip ())
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