#! /usr/bin/env python # -*- coding: ISO-8859-15 -*- # PyKota Print Quota Editor # # PyKota - Print Quotas for CUPS and LPRng # # (c) 2003, 2004, 2005, 2006, 2007 Jerome Alet # 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. # # $Id$ # # import sys import os import pwd import time try : import pyosd except ImportError : sys.stderr.write("Sorry ! You need both xosd and the Python OSD library (pyosd) for this software to work.\n") sys.exit(-1) from pykota.tool import PyKotaTool, PyKotaToolError, PyKotaCommandLineError, crashed, N_ __doc__ = N_("""pykosd v%(__version__)s (c) %(__years__)s %(__author__)s An OSD quota monitor for PyKota. command line usage : pykosd [options] options : -v | --version Prints pykosd's version number then exits. -h | --help Prints this message then exits. -c | --color #rrggbb Sets the color to use for display as an hexadecimal triplet, for example #FF0000 is 100%% red. Defaults to 100%% green (#00FF00). -d | --duration d Sets the duration of the display in seconds. Defaults to 3 seconds. -f | --font f Sets the font to use for display. Defaults to the Python OSD library's default. -l | --loop n Sets the number of times the info will be displayed. Defaults to 0, which means loop forever. -s | --sleep s Sets the sleeping duration between two displays in seconds. Defaults to 180 seconds (3 minutes). examples : $ pykosd -s 60 --loop 5 Will launch pykosd. Display will be refreshed every 60 seconds, and will last for 3 seconds (the default) each time. After five iterations, the program will exit. """) class PyKOSD(PyKotaTool) : """A class for an On Screen Display print quota monitor.""" def main(self, args, options) : """Main function starts here.""" try : duration = int(options["duration"]) if duration <= 0 : raise ValueError except : raise PyKotaCommandLineError, _("Invalid duration option %s") % str(options["duration"]) try : loop = int(options["loop"]) if loop < 0 : raise ValueError except : raise PyKotaCommandLineError, _("Invalid loop option %s") % str(options["loop"]) try : sleep = float(options["sleep"]) if sleep <= 0 : raise ValueError except : raise PyKotaCommandLineError, _("Invalid sleep option %s") % str(options["sleep"]) color = options["color"] if not color.startswith("#") : color = "#%s" % color if len(color) != 7 : raise PyKotaCommandLineError, _("Invalid color option %s") % str(color) savecolor = color uname = pwd.getpwuid(os.getuid())[0] while 1 : color = savecolor user = self.storage.getUserFromBackend(uname) # don't use cache if not user.Exists : raise PyKotaCommandLineError, _("User %s doesn't exist in PyKota's database") % uname if user.LimitBy == "quota" : printers = self.storage.getMatchingPrinters("*") upquotas = [ self.storage.getUserPQuotaFromBackend(user, p) for p in printers ] # don't use cache nblines = len(upquotas) display = pyosd.osd(font=options["font"], colour=color, timeout=duration, shadow=2, lines=nblines) for line in range(nblines) : upq = upquotas[line] if upq.HardLimit is None : if upq.SoftLimit is None : percent = "%s" % upq.PageCounter else : percent = "%s%%" % min((upq.PageCounter * 100) / upq.SoftLimit, 100) else : percent = "%s%%" % min((upq.PageCounter * 100) / upq.HardLimit, 100) display.display(_("Pages used on %s : %s") % (upq.Printer.Name, percent), type=pyosd.TYPE_STRING, line=line) elif user.LimitBy == "balance" : if user.AccountBalance <= self.config.getBalanceZero() : color = "#FF0000" display = pyosd.osd(font=options["font"], colour=color, timeout=duration, shadow=2) display.display(_("PyKota Units left : %.2f") % user.AccountBalance, type=pyosd.TYPE_STRING) elif user.LimitBy == "noprint" : display = pyosd.osd(font=options["font"], colour="#FF0000", timeout=duration, shadow=2) display.display(_("Printing denied."), type=pyosd.TYPE_STRING) elif user.LimitBy == "noquota" : display = pyosd.osd(font=options["font"], colour=savecolor, timeout=duration, shadow=2) display.display(_("Printing not limited."), type=pyosd.TYPE_STRING) elif user.LimitBy == "nochange" : display = pyosd.osd(font=options["font"], colour=savecolor, timeout=duration, shadow=2) display.display(_("Printing not limited, no accounting."), type=pyosd.TYPE_STRING) else : raise PyKotaToolError, "Incorrect limitation factor %s for user %s" % (repr(user.LimitBy), user.Name) time.sleep(duration + 1) if loop : loop -= 1 if not loop : break time.sleep(sleep) return 0 if __name__ == "__main__" : retcode = -1 try : defaults = { \ "color" : "#00FF00", \ "duration" : "3", \ "font" : pyosd.default_font, \ "loop" : "0", \ "sleep" : "180", \ } short_options = "hvc:d:f:l:s:" long_options = ["help", "version", "color=", "colour=", "duration=", "font=", "loop=", "sleep="] cmd = PyKOSD(doc=__doc__) cmd.deferredInit() # parse and checks the command line (options, args) = cmd.parseCommandline(sys.argv[1:], short_options, long_options, allownothing=1) # sets long options options["help"] = options["h"] or options["help"] options["version"] = options["v"] or options["version"] options["color"] = options["c"] or options["color"] or options["colour"] or defaults["color"] options["duration"] = options["d"] or options["duration"] or defaults["duration"] options["font"] = options["f"] or options["font"] or defaults["font"] options["loop"] = options["l"] or options["loop"] or defaults["loop"] options["sleep"] = options["s"] or options["sleep"] or defaults["sleep"] if options["help"] : cmd.display_usage_and_quit() elif options["version"] : cmd.display_version_and_quit() else : retcode = cmd.main(args, options) except KeyboardInterrupt : retcode = 0 except KeyboardInterrupt : sys.stderr.write("\nInterrupted with Ctrl+C !\n") retcode = -3 except PyKotaCommandLineError, msg : sys.stderr.write("%s : %s\n" % (sys.argv[0], msg)) retcode = -2 except SystemExit : pass except : try : cmd.crashed("pykosd failed") except : crashed("pykosd failed") try : cmd.storage.close() except : pass sys.exit(retcode)