| 1 | #! /usr/bin/env python |
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| 2 | # -*- coding: utf-8 -*- |
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| 3 | # |
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| 4 | # pkipplib : IPP and CUPS support for Python |
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| 5 | # |
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| 6 | # (c) 2003-2013 Jerome Alet <alet@librelogiciel.com> |
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| 7 | # This program is free software: you can redistribute it and/or modify |
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| 8 | # it under the terms of the GNU General Public License as published by |
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| 9 | # the Free Software Foundation, either version 3 of the License, or |
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| 10 | # (at your option) any later version. |
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| 11 | # |
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| 12 | # This program is distributed in the hope that it will be useful, |
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| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | # GNU General Public License for more details. |
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| 16 | # |
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| 17 | # You should have received a copy of the GNU General Public License |
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| 18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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| 19 | # |
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| 20 | |
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| 21 | """This command can be placed in /usr/lib/cups/notifier and |
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| 22 | used as the notifications' recipient when creating IPP subscriptions. |
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| 23 | |
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| 24 | It will automatically ensures that each time a printer is added or |
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| 25 | removed from CUPS it is also added or removed from PyKota's database. |
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| 26 | |
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| 27 | IMPORTANT : because of a bug in CUPS 1.2.1, this command only works |
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| 28 | the first time a notification is sent.""" |
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| 29 | |
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| 30 | import sys |
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| 31 | import os |
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| 32 | import fcntl |
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| 33 | |
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| 34 | from pkipplib import pkipplib |
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| 35 | |
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| 36 | if __name__ == "__main__" : |
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| 37 | # |
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| 38 | # First thing we do is put stdin in non-blocking mode. |
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| 39 | fd = sys.stdin.fileno() |
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| 40 | fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, |
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| 41 | fcntl.fcntl(fd, fcntl.F_GETFL) | os.O_NONBLOCK) |
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| 42 | |
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| 43 | # then we read the notification CUPS sent us to our stdin |
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| 44 | notification = pkipplib.IPPRequest(sys.stdin.read()) |
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| 45 | |
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| 46 | # now we parse it |
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| 47 | notification.parse() |
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| 48 | |
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| 49 | # then we act one way or another, depending on the event received. |
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| 50 | event = notification.event_notification["notify-subscribed-event"][0][1] |
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| 51 | if event in ("printer-added", "printer-deleted") : |
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| 52 | printername = notification.event_notification["printer-name"][0][1] |
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| 53 | if event.endswith("-added") : |
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| 54 | action = "add" |
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| 55 | else : |
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| 56 | action = "delete" |
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| 57 | os.system('/usr/bin/pkprinters --%s "%s"' % (action, printername)) |
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