[695] | 1 | #! /usr/bin/env python |
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| 2 | |
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| 3 | # PyKota - Print Quotas for CUPS |
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| 4 | # |
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| 5 | # (c) 2003 Jerome Alet <alet@librelogiciel.com> |
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| 6 | # You're welcome to redistribute this software under the |
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| 7 | # terms of the GNU General Public Licence version 2.0 |
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| 8 | # or, at your option, any higher version. |
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| 9 | # |
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| 10 | # You can read the complete GNU GPL in the file COPYING |
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| 11 | # which should come along with this software, or visit |
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| 12 | # the Free Software Foundation's WEB site http://www.fsf.org |
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| 13 | # |
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| 14 | # $Id$ |
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| 15 | # |
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| 16 | # $Log$ |
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[802] | 17 | # Revision 1.20 2003/02/17 22:55:01 jalet |
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| 18 | # More options can now be set per printer or globally : |
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| 19 | # |
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| 20 | # admin |
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| 21 | # adminmail |
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| 22 | # gracedelay |
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| 23 | # requester |
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| 24 | # |
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| 25 | # the printer option has priority when both are defined. |
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| 26 | # |
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[788] | 27 | # Revision 1.19 2003/02/10 11:28:45 jalet |
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| 28 | # Localization |
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| 29 | # |
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[782] | 30 | # Revision 1.18 2003/02/10 01:02:17 jalet |
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| 31 | # External requester is about to work, but I must sleep |
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| 32 | # |
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[773] | 33 | # Revision 1.17 2003/02/09 13:05:43 jalet |
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| 34 | # Internationalization continues... |
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| 35 | # |
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[772] | 36 | # Revision 1.16 2003/02/09 12:56:53 jalet |
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| 37 | # Internationalization begins... |
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| 38 | # |
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[764] | 39 | # Revision 1.15 2003/02/08 22:09:52 jalet |
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| 40 | # Name check method moved here |
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| 41 | # |
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[742] | 42 | # Revision 1.14 2003/02/07 10:42:45 jalet |
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| 43 | # Indentation problem |
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| 44 | # |
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[733] | 45 | # Revision 1.13 2003/02/07 08:34:16 jalet |
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| 46 | # Test wrt date limit was wrong |
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| 47 | # |
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[729] | 48 | # Revision 1.12 2003/02/06 23:20:02 jalet |
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| 49 | # warnpykota doesn't need any user/group name argument, mimicing the |
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| 50 | # warnquota disk quota tool. |
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| 51 | # |
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[728] | 52 | # Revision 1.11 2003/02/06 22:54:33 jalet |
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| 53 | # warnpykota should be ok |
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| 54 | # |
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[722] | 55 | # Revision 1.10 2003/02/06 15:03:11 jalet |
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| 56 | # added a method to set the limit date |
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| 57 | # |
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[715] | 58 | # Revision 1.9 2003/02/06 10:39:23 jalet |
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| 59 | # Preliminary edpykota work. |
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| 60 | # |
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[713] | 61 | # Revision 1.8 2003/02/06 09:19:02 jalet |
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| 62 | # More robust behavior (hopefully) when the user or printer is not managed |
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| 63 | # correctly by the Quota System : e.g. cupsFilter added in ppd file, but |
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| 64 | # printer and/or user not 'yet?' in storage. |
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| 65 | # |
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[712] | 66 | # Revision 1.7 2003/02/06 00:00:45 jalet |
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| 67 | # Now includes the printer name in email messages |
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| 68 | # |
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[711] | 69 | # Revision 1.6 2003/02/05 23:55:02 jalet |
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| 70 | # Cleaner email messages |
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| 71 | # |
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[709] | 72 | # Revision 1.5 2003/02/05 23:45:09 jalet |
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| 73 | # Better DateTime manipulation wrt grace delay |
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| 74 | # |
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[708] | 75 | # Revision 1.4 2003/02/05 23:26:22 jalet |
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| 76 | # Incorrect handling of grace delay |
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| 77 | # |
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[699] | 78 | # Revision 1.3 2003/02/05 22:16:20 jalet |
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| 79 | # DEVICE_URI is undefined outside of CUPS, i.e. for normal command line tools |
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| 80 | # |
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[698] | 81 | # Revision 1.2 2003/02/05 22:10:29 jalet |
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| 82 | # Typos |
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| 83 | # |
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[695] | 84 | # Revision 1.1 2003/02/05 21:28:17 jalet |
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| 85 | # Initial import into CVS |
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| 86 | # |
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| 87 | # |
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| 88 | # |
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| 89 | |
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| 90 | import sys |
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| 91 | import os |
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[715] | 92 | import getopt |
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[695] | 93 | import smtplib |
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[772] | 94 | import gettext |
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[782] | 95 | import locale |
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[695] | 96 | |
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[708] | 97 | from mx import DateTime |
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| 98 | |
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[715] | 99 | from pykota import version, config, storage, logger |
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[695] | 100 | |
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| 101 | class PyKotaToolError(Exception): |
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| 102 | """An exception for PyKota config related stuff.""" |
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| 103 | def __init__(self, message = ""): |
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| 104 | self.message = message |
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| 105 | Exception.__init__(self, message) |
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| 106 | def __repr__(self): |
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| 107 | return self.message |
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| 108 | __str__ = __repr__ |
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| 109 | |
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| 110 | class PyKotaTool : |
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| 111 | """Base class for all PyKota command line tools.""" |
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[715] | 112 | def __init__(self, isfilter=0, doc="PyKota %s (c) 2003 %s" % (version.__version__, version.__author__)) : |
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[695] | 113 | """Initializes the command line tool.""" |
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[772] | 114 | # locale stuff |
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[788] | 115 | try : |
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[782] | 116 | locale.setlocale(locale.LC_ALL, "") |
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[788] | 117 | gettext.install("pykota") |
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| 118 | except (locale.Error, IOError) : |
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| 119 | gettext.NullTranslations().install() |
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[772] | 120 | |
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| 121 | # pykota specific stuff |
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[715] | 122 | self.documentation = doc |
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[695] | 123 | self.config = config.PyKotaConfig(os.environ.get("CUPS_SERVERROOT", "/etc/cups")) |
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[698] | 124 | self.logger = logger.openLogger(self.config) |
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[695] | 125 | self.storage = storage.openConnection(self.config, asadmin=(not isfilter)) |
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| 126 | self.printername = os.environ.get("PRINTER", None) |
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| 127 | self.smtpserver = self.config.getSMTPServer() |
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| 128 | |
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[715] | 129 | def display_version_and_quit(self) : |
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| 130 | """Displays version number, then exists successfully.""" |
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| 131 | print version.__version__ |
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| 132 | sys.exit(0) |
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| 133 | |
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| 134 | def display_usage_and_quit(self) : |
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| 135 | """Displays command line usage, then exists successfully.""" |
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| 136 | print self.documentation |
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| 137 | sys.exit(0) |
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| 138 | |
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[729] | 139 | def parseCommandline(self, argv, short, long, allownothing=0) : |
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[715] | 140 | """Parses the command line, controlling options.""" |
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| 141 | # split options in two lists: those which need an argument, those which don't need any |
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| 142 | withoutarg = [] |
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| 143 | witharg = [] |
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| 144 | lgs = len(short) |
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| 145 | i = 0 |
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| 146 | while i < lgs : |
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| 147 | ii = i + 1 |
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| 148 | if (ii < lgs) and (short[ii] == ':') : |
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| 149 | # needs an argument |
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| 150 | witharg.append(short[i]) |
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| 151 | ii = ii + 1 # skip the ':' |
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| 152 | else : |
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| 153 | # doesn't need an argument |
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| 154 | withoutarg.append(short[i]) |
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| 155 | i = ii |
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| 156 | |
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| 157 | for option in long : |
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| 158 | if option[-1] == '=' : |
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| 159 | # needs an argument |
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| 160 | witharg.append(option[:-1]) |
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| 161 | else : |
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| 162 | # doesn't need an argument |
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| 163 | withoutarg.append(option) |
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| 164 | |
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| 165 | # we begin with all possible options unset |
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| 166 | parsed = {} |
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| 167 | for option in withoutarg + witharg : |
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| 168 | parsed[option] = None |
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| 169 | |
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| 170 | # then we parse the command line |
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| 171 | args = [] # to not break if something unexpected happened |
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| 172 | try : |
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| 173 | options, args = getopt.getopt(argv, short, long) |
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| 174 | if options : |
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| 175 | for (o, v) in options : |
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| 176 | # we skip the '-' chars |
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| 177 | lgo = len(o) |
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| 178 | i = 0 |
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| 179 | while (i < lgo) and (o[i] == '-') : |
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| 180 | i = i + 1 |
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| 181 | o = o[i:] |
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| 182 | if o in witharg : |
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| 183 | # needs an argument : set it |
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| 184 | parsed[o] = v |
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| 185 | elif o in withoutarg : |
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| 186 | # doesn't need an argument : boolean |
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| 187 | parsed[o] = 1 |
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| 188 | else : |
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| 189 | # should never occur |
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| 190 | raise PyKotaToolError, "Unexpected problem when parsing command line" |
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[729] | 191 | elif (not args) and (not allownothing) and sys.stdin.isatty() : # no option and no argument, we display help if we are a tty |
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[715] | 192 | self.display_usage_and_quit() |
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| 193 | except getopt.error, msg : |
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| 194 | sys.stderr.write("%s\n" % msg) |
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| 195 | sys.stderr.flush() |
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| 196 | self.display_usage_and_quit() |
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| 197 | return (parsed, args) |
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| 198 | |
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[764] | 199 | def isValidName(self, name) : |
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| 200 | """Checks if a user or printer name is valid.""" |
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| 201 | # unfortunately Python 2.1 string modules doesn't define ascii_letters... |
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| 202 | asciiletters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' |
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| 203 | digits = '0123456789' |
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| 204 | if name[0] in asciiletters : |
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| 205 | validchars = asciiletters + digits + "-_" |
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| 206 | for c in name[1:] : |
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| 207 | if c not in validchars : |
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| 208 | return 0 |
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| 209 | return 1 |
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| 210 | return 0 |
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| 211 | |
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[802] | 212 | def sendMessage(self, adminmail, touser, fullmessage) : |
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[695] | 213 | """Sends an email message containing headers to some user.""" |
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| 214 | if "@" not in touser : |
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| 215 | touser = "%s@%s" % (touser, self.smtpserver) |
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| 216 | server = smtplib.SMTP(self.smtpserver) |
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[802] | 217 | server.sendmail(adminmail, [touser], fullmessage) |
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[695] | 218 | server.quit() |
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| 219 | |
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[802] | 220 | def sendMessageToUser(self, admin, adminmail, username, subject, message) : |
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[695] | 221 | """Sends an email message to a user.""" |
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[802] | 222 | message += _("\n\nPlease contact your system administrator :\n\n\t%s - <%s>\n") % (admin, adminmail) |
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| 223 | self.sendMessage(adminmail, username, "Subject: %s\n\n%s" % (subject, message)) |
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[695] | 224 | |
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[802] | 225 | def sendMessageToAdmin(self, adminmail, subject, message) : |
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[695] | 226 | """Sends an email message to the Print Quota administrator.""" |
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[802] | 227 | self.sendMessage(adminmail, adminmail, "Subject: %s\n\n%s" % (subject, message)) |
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[695] | 228 | |
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[708] | 229 | def checkUserPQuota(self, username, printername) : |
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| 230 | """Checks the user quota on a printer and deny or accept the job.""" |
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| 231 | quota = self.storage.getUserPQuota(username, printername) |
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[713] | 232 | if quota is None : |
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| 233 | # Unknown user or printer or combination |
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| 234 | policy = self.config.getPrinterPolicy(printername) |
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| 235 | if policy in [None, "ALLOW"] : |
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[708] | 236 | action = "ALLOW" |
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[713] | 237 | else : |
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| 238 | action = "DENY" |
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[773] | 239 | self.logger.log_message(_("Unable to match user %s on printer %s, applying default policy (%s)") % (username, printername, action), "warn") |
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[713] | 240 | return (action, None, None) |
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| 241 | else : |
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| 242 | pagecounter = quota["pagecounter"] |
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| 243 | softlimit = quota["softlimit"] |
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| 244 | hardlimit = quota["hardlimit"] |
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| 245 | datelimit = quota["datelimit"] |
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| 246 | if datelimit is not None : |
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| 247 | datelimit = DateTime.ISO.ParseDateTime(datelimit) |
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| 248 | if softlimit is not None : |
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| 249 | if pagecounter < softlimit : |
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| 250 | action = "ALLOW" |
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| 251 | elif hardlimit is not None : |
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[742] | 252 | if softlimit <= pagecounter < hardlimit : |
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| 253 | now = DateTime.now() |
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| 254 | if datelimit is None : |
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| 255 | datelimit = now + self.config.getGraceDelay() |
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| 256 | self.storage.setDateLimit(username, printername, datelimit) |
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| 257 | if now < datelimit : |
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| 258 | action = "WARN" |
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| 259 | else : |
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| 260 | action = "DENY" |
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| 261 | else : |
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| 262 | action = "DENY" |
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[713] | 263 | else : |
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| 264 | action = "DENY" |
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[708] | 265 | else : |
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[713] | 266 | action = "ALLOW" |
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| 267 | return (action, (hardlimit - pagecounter), datelimit) |
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[708] | 268 | |
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[728] | 269 | def warnGroupPQuota(self, username, printername=None) : |
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[695] | 270 | """Checks a user quota and send him a message if quota is exceeded on current printer.""" |
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[728] | 271 | pname = printername or self.printername |
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[773] | 272 | raise PyKotaToolError, _("Group quotas are currently not implemented.") |
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[728] | 273 | |
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| 274 | def warnUserPQuota(self, username, printername=None) : |
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| 275 | """Checks a user quota and send him a message if quota is exceeded on current printer.""" |
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| 276 | pname = printername or self.printername |
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[802] | 277 | admin = self.config.getAdmin(pname) |
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| 278 | adminmail = self.config.getAdminMail(pname) |
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[728] | 279 | (action, grace, gracedate) = self.checkUserPQuota(username, pname) |
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[695] | 280 | if action == "DENY" : |
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[713] | 281 | if (grace is not None) and (gracedate is not None) : |
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| 282 | # only when both user and printer are known |
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[773] | 283 | adminmessage = _("Print Quota exceeded for user %s on printer %s") % (username, pname) |
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[713] | 284 | self.logger.log_message(adminmessage) |
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[802] | 285 | self.sendMessageToUser(admin, adminmail, username, _("Print Quota Exceeded"), _("You are not allowed to print anymore because\nyour Print Quota is exceeded on printer %s.") % pname) |
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| 286 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
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[695] | 287 | elif action == "WARN" : |
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[773] | 288 | adminmessage = _("Print Quota soft limit exceeded for user %s on printer %s") % (username, pname) |
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[695] | 289 | self.logger.log_message(adminmessage) |
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[802] | 290 | self.sendMessageToUser(admin, adminmail, username, _("Print Quota Exceeded"), _("You will soon be forbidden to print anymore because\nyour Print Quota is almost reached on printer %s.") % pname) |
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| 291 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
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[695] | 292 | return action |
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| 293 | |
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