| 1 | # PyKota |
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| 2 | # -*- coding: ISO-8859-15 -*- |
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| 3 | |
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| 4 | # PyKota - Print Quotas for CUPS and LPRng |
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| 5 | # |
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| 6 | # (c) 2003, 2004, 2005, 2006 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 2 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, write to the Free Software |
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| 19 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 20 | # |
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| 21 | # $Id$ |
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| 22 | # |
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| 23 | # |
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| 24 | |
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| 25 | import sys |
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| 26 | import os |
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| 27 | import pwd |
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| 28 | import fnmatch |
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| 29 | import getopt |
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| 30 | import smtplib |
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| 31 | import gettext |
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| 32 | import locale |
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| 33 | import signal |
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| 34 | import socket |
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| 35 | import tempfile |
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| 36 | import md5 |
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| 37 | import ConfigParser |
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| 38 | import popen2 |
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| 39 | from email.MIMEText import MIMEText |
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| 40 | from email.Header import Header |
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| 41 | |
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| 42 | from mx import DateTime |
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| 43 | |
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| 44 | from pykota import config, storage, logger, accounter |
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| 45 | from pykota.version import __version__, __author__, __years__, __gplblurb__ |
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| 46 | |
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| 47 | try : |
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| 48 | from pkpgpdls import analyzer, pdlparser |
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| 49 | except ImportError : # TODO : Remove the try/except after release 1.24. |
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| 50 | sys.stderr.write("ERROR: pkpgcounter is now distributed separately, please grab it from http://www.librelogiciel.com/software/pkpgcounter/action_Download\n") |
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| 51 | |
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| 52 | def N_(message) : |
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| 53 | """Fake translation marker for translatable strings extraction.""" |
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| 54 | return message |
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| 55 | |
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| 56 | class PyKotaToolError(Exception): |
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| 57 | """An exception for PyKota related stuff.""" |
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| 58 | def __init__(self, message = ""): |
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| 59 | self.message = message |
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| 60 | Exception.__init__(self, message) |
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| 61 | def __repr__(self): |
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| 62 | return self.message |
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| 63 | __str__ = __repr__ |
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| 64 | |
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| 65 | class PyKotaCommandLineError(PyKotaToolError) : |
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| 66 | """An exception for Pykota command line tools.""" |
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| 67 | pass |
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| 68 | |
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| 69 | def crashed(message="Bug in PyKota") : |
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| 70 | """Minimal crash method.""" |
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| 71 | import traceback |
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| 72 | lines = [] |
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| 73 | for line in traceback.format_exception(*sys.exc_info()) : |
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| 74 | lines.extend([l for l in line.split("\n") if l]) |
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| 75 | msg = "ERROR: ".join(["%s\n" % l for l in (["ERROR: PyKota v%s" % __version__, message] + lines)]) |
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| 76 | sys.stderr.write(msg) |
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| 77 | sys.stderr.flush() |
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| 78 | return msg |
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| 79 | |
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| 80 | class Tool : |
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| 81 | """Base class for tools with no database access.""" |
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| 82 | def __init__(self, lang="", charset=None, doc="PyKota v%(__version__)s (c) %(__years__)s %(__author__)s") : |
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| 83 | """Initializes the command line tool.""" |
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| 84 | # did we drop priviledges ? |
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| 85 | self.privdropped = 0 |
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| 86 | |
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| 87 | # locale stuff |
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| 88 | self.defaultToCLocale = 0 |
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| 89 | try : |
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| 90 | locale.setlocale(locale.LC_ALL, lang) |
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| 91 | except (locale.Error, IOError) : |
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| 92 | # locale.setlocale(locale.LC_ALL, "C") |
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| 93 | self.defaultToCLocale = 1 |
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| 94 | try : |
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| 95 | gettext.install("pykota") |
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| 96 | except : |
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| 97 | gettext.NullTranslations().install() |
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| 98 | |
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| 99 | # We can force the charset. |
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| 100 | # The CHARSET environment variable is set by CUPS when printing. |
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| 101 | # Else we use the current locale's one. |
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| 102 | # If nothing is set, we use ISO-8859-15 widely used in western Europe. |
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| 103 | localecharset = None |
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| 104 | try : |
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| 105 | try : |
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| 106 | localecharset = locale.nl_langinfo(locale.CODESET) |
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| 107 | except AttributeError : |
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| 108 | try : |
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| 109 | localecharset = locale.getpreferredencoding() |
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| 110 | except AttributeError : |
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| 111 | try : |
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| 112 | localecharset = locale.getlocale()[1] |
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| 113 | localecharset = localecharset or locale.getdefaultlocale()[1] |
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| 114 | except ValueError : |
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| 115 | pass # Unknown locale, strange... |
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| 116 | except locale.Error : |
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| 117 | pass |
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| 118 | self.charset = charset or os.environ.get("CHARSET") or localecharset or "ISO-8859-15" |
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| 119 | |
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| 120 | # pykota specific stuff |
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| 121 | self.documentation = doc |
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| 122 | |
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| 123 | def deferredInit(self) : |
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| 124 | """Deferred initialization.""" |
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| 125 | # try to find the configuration files in user's 'pykota' home directory. |
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| 126 | try : |
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| 127 | self.pykotauser = pwd.getpwnam("pykota") |
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| 128 | except KeyError : |
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| 129 | self.pykotauser = None |
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| 130 | confdir = "/etc/pykota" |
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| 131 | missingUser = 1 |
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| 132 | else : |
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| 133 | confdir = self.pykotauser[5] |
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| 134 | missingUser = 0 |
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| 135 | |
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| 136 | self.config = config.PyKotaConfig(confdir) |
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| 137 | self.debug = self.config.getDebug() |
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| 138 | self.smtpserver = self.config.getSMTPServer() |
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| 139 | self.maildomain = self.config.getMailDomain() |
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| 140 | self.logger = logger.openLogger(self.config.getLoggingBackend()) |
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| 141 | |
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| 142 | # now drop priviledge if possible |
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| 143 | self.dropPriv() |
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| 144 | |
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| 145 | # We NEED this here, even when not in an accounting filter/backend |
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| 146 | self.softwareJobSize = 0 |
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| 147 | self.softwareJobPrice = 0.0 |
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| 148 | |
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| 149 | if self.defaultToCLocale : |
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| 150 | self.printInfo("Incorrect locale settings. PyKota falls back to the default locale.", "warn") |
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| 151 | if missingUser : |
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| 152 | self.printInfo("The 'pykota' system account is missing. Configuration files were searched in /etc/pykota instead.", "warn") |
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| 153 | |
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| 154 | self.logdebug("Charset in use : %s" % self.charset) |
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| 155 | arguments = " ".join(['"%s"' % arg for arg in sys.argv]) |
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| 156 | self.logdebug("Command line arguments : %s" % arguments) |
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| 157 | |
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| 158 | def dropPriv(self) : |
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| 159 | """Drops priviledges.""" |
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| 160 | uid = os.geteuid() |
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| 161 | if uid : |
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| 162 | try : |
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| 163 | username = pwd.getpwuid(uid)[0] |
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| 164 | except (KeyError, IndexError), msg : |
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| 165 | self.printInfo(_("Strange problem with uid(%s) : %s") % (uid, msg), "warn") |
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| 166 | else : |
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| 167 | self.logdebug(_("Running as user '%s'.") % username) |
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| 168 | else : |
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| 169 | if self.pykotauser is None : |
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| 170 | self.logdebug(_("No user named 'pykota'. Not dropping priviledges.")) |
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| 171 | else : |
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| 172 | try : |
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| 173 | os.setegid(self.pykotauser[3]) |
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| 174 | os.seteuid(self.pykotauser[2]) |
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| 175 | except OSError, msg : |
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| 176 | self.printInfo(_("Impossible to drop priviledges : %s") % msg, "warn") |
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| 177 | else : |
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| 178 | self.logdebug(_("Priviledges dropped. Now running as user 'pykota'.")) |
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| 179 | self.privdropped = 1 |
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| 180 | |
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| 181 | def regainPriv(self) : |
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| 182 | """Drops priviledges.""" |
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| 183 | if self.privdropped : |
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| 184 | try : |
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| 185 | os.seteuid(0) |
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| 186 | os.setegid(0) |
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| 187 | except OSError, msg : |
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| 188 | self.printInfo(_("Impossible to regain priviledges : %s") % msg, "warn") |
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| 189 | else : |
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| 190 | self.logdebug(_("Regained priviledges. Now running as root.")) |
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| 191 | self.privdropped = 0 |
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| 192 | |
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| 193 | def getCharset(self) : |
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| 194 | """Returns the charset in use.""" |
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| 195 | return self.charset |
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| 196 | |
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| 197 | def display(self, message) : |
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| 198 | """Display a message but only if stdout is a tty.""" |
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| 199 | if sys.stdout.isatty() : |
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| 200 | sys.stdout.write(message) |
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| 201 | sys.stdout.flush() |
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| 202 | |
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| 203 | def logdebug(self, message) : |
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| 204 | """Logs something to debug output if debug is enabled.""" |
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| 205 | if self.debug : |
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| 206 | self.logger.log_message(message, "debug") |
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| 207 | |
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| 208 | def printInfo(self, message, level="info") : |
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| 209 | """Sends a message to standard error.""" |
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| 210 | sys.stderr.write("%s: %s\n" % (level.upper(), message)) |
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| 211 | sys.stderr.flush() |
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| 212 | |
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| 213 | def matchString(self, s, patterns) : |
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| 214 | """Returns True if the string s matches one of the patterns, else False.""" |
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| 215 | if not patterns : |
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| 216 | return True # No pattern, always matches. |
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| 217 | else : |
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| 218 | for pattern in patterns : |
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| 219 | if fnmatch.fnmatchcase(s, pattern) : |
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| 220 | return True |
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| 221 | return False |
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| 222 | |
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| 223 | def display_version_and_quit(self) : |
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| 224 | """Displays version number, then exists successfully.""" |
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| 225 | try : |
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| 226 | self.clean() |
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| 227 | except AttributeError : |
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| 228 | pass |
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| 229 | print __version__ |
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| 230 | sys.exit(0) |
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| 231 | |
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| 232 | def display_usage_and_quit(self) : |
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| 233 | """Displays command line usage, then exists successfully.""" |
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| 234 | try : |
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| 235 | self.clean() |
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| 236 | except AttributeError : |
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| 237 | pass |
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| 238 | print _(self.documentation) % globals() |
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| 239 | print __gplblurb__ |
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| 240 | print |
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| 241 | print _("Please report bugs to :"), __author__ |
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| 242 | sys.exit(0) |
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| 243 | |
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| 244 | def crashed(self, message="Bug in PyKota") : |
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| 245 | """Outputs a crash message, and optionally sends it to software author.""" |
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| 246 | msg = crashed(message) |
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| 247 | fullmessage = "========== Traceback :\n\n%s\n\n========== sys.argv :\n\n%s\n\n========== Environment :\n\n%s\n" % \ |
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| 248 | (msg, \ |
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| 249 | "\n".join([" %s" % repr(a) for a in sys.argv]), \ |
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| 250 | "\n".join([" %s=%s" % (k, v) for (k, v) in os.environ.items()])) |
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| 251 | try : |
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| 252 | crashrecipient = self.config.getCrashRecipient() |
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| 253 | if crashrecipient : |
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| 254 | admin = self.config.getAdminMail("global") # Nice trick, isn't it ? |
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| 255 | server = smtplib.SMTP(self.smtpserver) |
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| 256 | server.sendmail(admin, [admin, crashrecipient], \ |
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| 257 | "From: %s\nTo: %s\nCc: %s\nSubject: PyKota v%s crash traceback !\n\n%s" % \ |
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| 258 | (admin, crashrecipient, admin, __version__, fullmessage)) |
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| 259 | server.quit() |
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| 260 | except : |
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| 261 | pass |
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| 262 | return fullmessage |
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| 263 | |
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| 264 | def parseCommandline(self, argv, short, long, allownothing=0) : |
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| 265 | """Parses the command line, controlling options.""" |
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| 266 | # split options in two lists: those which need an argument, those which don't need any |
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| 267 | short = "%sA:" % short |
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| 268 | long.append("arguments=") |
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| 269 | withoutarg = [] |
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| 270 | witharg = [] |
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| 271 | lgs = len(short) |
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| 272 | i = 0 |
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| 273 | while i < lgs : |
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| 274 | ii = i + 1 |
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| 275 | if (ii < lgs) and (short[ii] == ':') : |
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| 276 | # needs an argument |
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| 277 | witharg.append(short[i]) |
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| 278 | ii = ii + 1 # skip the ':' |
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| 279 | else : |
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| 280 | # doesn't need an argument |
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| 281 | withoutarg.append(short[i]) |
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| 282 | i = ii |
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| 283 | |
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| 284 | for option in long : |
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| 285 | if option[-1] == '=' : |
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| 286 | # needs an argument |
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| 287 | witharg.append(option[:-1]) |
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| 288 | else : |
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| 289 | # doesn't need an argument |
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| 290 | withoutarg.append(option) |
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| 291 | |
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| 292 | # then we parse the command line |
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| 293 | done = 0 |
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| 294 | while not done : |
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| 295 | # we begin with all possible options unset |
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| 296 | parsed = {} |
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| 297 | for option in withoutarg + witharg : |
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| 298 | parsed[option] = None |
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| 299 | args = [] # to not break if something unexpected happened |
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| 300 | try : |
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| 301 | options, args = getopt.getopt(argv, short, long) |
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| 302 | if options : |
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| 303 | for (o, v) in options : |
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| 304 | # we skip the '-' chars |
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| 305 | lgo = len(o) |
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| 306 | i = 0 |
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| 307 | while (i < lgo) and (o[i] == '-') : |
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| 308 | i = i + 1 |
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| 309 | o = o[i:] |
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| 310 | if o in witharg : |
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| 311 | # needs an argument : set it |
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| 312 | parsed[o] = v |
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| 313 | elif o in withoutarg : |
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| 314 | # doesn't need an argument : boolean |
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| 315 | parsed[o] = 1 |
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| 316 | else : |
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| 317 | # should never occur |
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| 318 | raise PyKotaCommandLineError, "Unexpected problem when parsing command line" |
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| 319 | 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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| 320 | self.display_usage_and_quit() |
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| 321 | except getopt.error, msg : |
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| 322 | raise PyKotaCommandLineError, str(msg) |
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| 323 | else : |
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| 324 | if parsed["arguments"] or parsed["A"] : |
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| 325 | # arguments are in a file, we ignore all other arguments |
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| 326 | # and reset the list of arguments to the lines read from |
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| 327 | # the file. |
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| 328 | argsfile = open(parsed["arguments"] or parsed["A"], "r") |
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| 329 | argv = [ l.strip() for l in argsfile.readlines() ] |
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| 330 | argsfile.close() |
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| 331 | for i in range(len(argv)) : |
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| 332 | argi = argv[i] |
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| 333 | if argi.startswith('"') and argi.endswith('"') : |
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| 334 | argv[i] = argi[1:-1] |
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| 335 | else : |
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| 336 | done = 1 |
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| 337 | return (parsed, args) |
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| 338 | |
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| 339 | class PyKotaTool(Tool) : |
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| 340 | """Base class for all PyKota command line tools.""" |
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| 341 | def __init__(self, lang="", charset=None, doc="PyKota v%(__version__)s (c) %(__years__)s %(__author__)s") : |
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| 342 | """Initializes the command line tool and opens the database.""" |
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| 343 | Tool.__init__(self, lang, charset, doc) |
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| 344 | |
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| 345 | def deferredInit(self) : |
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| 346 | """Deferred initialization.""" |
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| 347 | Tool.deferredInit(self) |
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| 348 | self.storage = storage.openConnection(self) |
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| 349 | if self.config.isAdmin : # TODO : We don't know this before, fix this ! |
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| 350 | self.logdebug("Beware : running as a PyKota administrator !") |
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| 351 | else : |
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| 352 | self.logdebug("Don't Panic : running as a mere mortal !") |
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| 353 | |
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| 354 | def clean(self) : |
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| 355 | """Ensures that the database is closed.""" |
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| 356 | try : |
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| 357 | self.storage.close() |
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| 358 | except (TypeError, NameError, AttributeError) : |
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| 359 | pass |
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| 360 | |
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| 361 | def isValidName(self, name) : |
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| 362 | """Checks if a user or printer name is valid.""" |
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| 363 | invalidchars = "/@?*,;&|" |
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| 364 | for c in list(invalidchars) : |
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| 365 | if c in name : |
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| 366 | return 0 |
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| 367 | return 1 |
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| 368 | |
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| 369 | def sendMessage(self, adminmail, touser, fullmessage) : |
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| 370 | """Sends an email message containing headers to some user.""" |
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| 371 | if "@" not in touser : |
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| 372 | touser = "%s@%s" % (touser, self.maildomain or self.smtpserver) |
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| 373 | try : |
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| 374 | server = smtplib.SMTP(self.smtpserver) |
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| 375 | except socket.error, msg : |
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| 376 | self.printInfo(_("Impossible to connect to SMTP server : %s") % msg, "error") |
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| 377 | else : |
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| 378 | try : |
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| 379 | server.sendmail(adminmail, [touser], "From: %s\nTo: %s\n%s" % (adminmail, touser, fullmessage)) |
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| 380 | except smtplib.SMTPException, answer : |
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| 381 | for (k, v) in answer.recipients.items() : |
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| 382 | self.printInfo(_("Impossible to send mail to %s, error %s : %s") % (k, v[0], v[1]), "error") |
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| 383 | server.quit() |
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| 384 | |
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| 385 | def sendMessageToUser(self, admin, adminmail, user, subject, message) : |
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| 386 | """Sends an email message to a user.""" |
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| 387 | message += _("\n\nPlease contact your system administrator :\n\n\t%s - <%s>\n") % (admin, adminmail) |
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| 388 | self.sendMessage(adminmail, user.Email or user.Name, "Subject: %s\n\n%s" % (subject, message)) |
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| 389 | |
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| 390 | def sendMessageToAdmin(self, adminmail, subject, message) : |
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| 391 | """Sends an email message to the Print Quota administrator.""" |
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| 392 | self.sendMessage(adminmail, adminmail, "Subject: %s\n\n%s" % (subject, message)) |
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| 393 | |
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| 394 | def _checkUserPQuota(self, userpquota) : |
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| 395 | """Checks the user quota on a printer and deny or accept the job.""" |
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| 396 | # then we check the user's own quota |
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| 397 | # if we get there we are sure that policy is not EXTERNAL |
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| 398 | user = userpquota.User |
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| 399 | printer = userpquota.Printer |
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| 400 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
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| 401 | self.logdebug("Checking user %s's quota on printer %s" % (user.Name, printer.Name)) |
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| 402 | (policy, dummy) = self.config.getPrinterPolicy(userpquota.Printer.Name) |
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| 403 | if not userpquota.Exists : |
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| 404 | # Unknown userquota |
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| 405 | if policy == "ALLOW" : |
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| 406 | action = "POLICY_ALLOW" |
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| 407 | else : |
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| 408 | action = "POLICY_DENY" |
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| 409 | self.printInfo(_("Unable to match user %s on printer %s, applying default policy (%s)") % (user.Name, printer.Name, action)) |
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| 410 | else : |
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| 411 | pagecounter = int(userpquota.PageCounter or 0) |
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| 412 | if enforcement == "STRICT" : |
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| 413 | pagecounter += self.softwareJobSize |
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| 414 | if userpquota.SoftLimit is not None : |
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| 415 | softlimit = int(userpquota.SoftLimit) |
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| 416 | if pagecounter < softlimit : |
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| 417 | action = "ALLOW" |
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| 418 | else : |
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| 419 | if userpquota.HardLimit is None : |
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| 420 | # only a soft limit, this is equivalent to having only a hard limit |
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| 421 | action = "DENY" |
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| 422 | else : |
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| 423 | hardlimit = int(userpquota.HardLimit) |
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| 424 | if softlimit <= pagecounter < hardlimit : |
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| 425 | now = DateTime.now() |
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| 426 | if userpquota.DateLimit is not None : |
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| 427 | datelimit = DateTime.ISO.ParseDateTime(userpquota.DateLimit) |
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| 428 | else : |
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| 429 | datelimit = now + self.config.getGraceDelay(printer.Name) |
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| 430 | userpquota.setDateLimit(datelimit) |
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| 431 | if now < datelimit : |
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| 432 | action = "WARN" |
|---|
| 433 | else : |
|---|
| 434 | action = "DENY" |
|---|
| 435 | else : |
|---|
| 436 | action = "DENY" |
|---|
| 437 | else : |
|---|
| 438 | if userpquota.HardLimit is not None : |
|---|
| 439 | # no soft limit, only a hard one. |
|---|
| 440 | hardlimit = int(userpquota.HardLimit) |
|---|
| 441 | if pagecounter < hardlimit : |
|---|
| 442 | action = "ALLOW" |
|---|
| 443 | else : |
|---|
| 444 | action = "DENY" |
|---|
| 445 | else : |
|---|
| 446 | # Both are unset, no quota, i.e. accounting only |
|---|
| 447 | action = "ALLOW" |
|---|
| 448 | return action |
|---|
| 449 | |
|---|
| 450 | def checkGroupPQuota(self, grouppquota) : |
|---|
| 451 | """Checks the group quota on a printer and deny or accept the job.""" |
|---|
| 452 | group = grouppquota.Group |
|---|
| 453 | printer = grouppquota.Printer |
|---|
| 454 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
|---|
| 455 | self.logdebug("Checking group %s's quota on printer %s" % (group.Name, printer.Name)) |
|---|
| 456 | if group.LimitBy and (group.LimitBy.lower() == "balance") : |
|---|
| 457 | val = group.AccountBalance or 0.0 |
|---|
| 458 | if enforcement == "STRICT" : |
|---|
| 459 | val -= self.softwareJobPrice # use precomputed size. |
|---|
| 460 | balancezero = self.config.getBalanceZero() |
|---|
| 461 | if val <= balancezero : |
|---|
| 462 | action = "DENY" |
|---|
| 463 | elif val <= self.config.getPoorMan() : |
|---|
| 464 | action = "WARN" |
|---|
| 465 | else : |
|---|
| 466 | action = "ALLOW" |
|---|
| 467 | if (enforcement == "STRICT") and (val == balancezero) : |
|---|
| 468 | action = "WARN" # we can still print until account is 0 |
|---|
| 469 | else : |
|---|
| 470 | val = grouppquota.PageCounter or 0 |
|---|
| 471 | if enforcement == "STRICT" : |
|---|
| 472 | val += self.softwareJobSize |
|---|
| 473 | if grouppquota.SoftLimit is not None : |
|---|
| 474 | softlimit = int(grouppquota.SoftLimit) |
|---|
| 475 | if val < softlimit : |
|---|
| 476 | action = "ALLOW" |
|---|
| 477 | else : |
|---|
| 478 | if grouppquota.HardLimit is None : |
|---|
| 479 | # only a soft limit, this is equivalent to having only a hard limit |
|---|
| 480 | action = "DENY" |
|---|
| 481 | else : |
|---|
| 482 | hardlimit = int(grouppquota.HardLimit) |
|---|
| 483 | if softlimit <= val < hardlimit : |
|---|
| 484 | now = DateTime.now() |
|---|
| 485 | if grouppquota.DateLimit is not None : |
|---|
| 486 | datelimit = DateTime.ISO.ParseDateTime(grouppquota.DateLimit) |
|---|
| 487 | else : |
|---|
| 488 | datelimit = now + self.config.getGraceDelay(printer.Name) |
|---|
| 489 | grouppquota.setDateLimit(datelimit) |
|---|
| 490 | if now < datelimit : |
|---|
| 491 | action = "WARN" |
|---|
| 492 | else : |
|---|
| 493 | action = "DENY" |
|---|
| 494 | else : |
|---|
| 495 | action = "DENY" |
|---|
| 496 | else : |
|---|
| 497 | if grouppquota.HardLimit is not None : |
|---|
| 498 | # no soft limit, only a hard one. |
|---|
| 499 | hardlimit = int(grouppquota.HardLimit) |
|---|
| 500 | if val < hardlimit : |
|---|
| 501 | action = "ALLOW" |
|---|
| 502 | else : |
|---|
| 503 | action = "DENY" |
|---|
| 504 | else : |
|---|
| 505 | # Both are unset, no quota, i.e. accounting only |
|---|
| 506 | action = "ALLOW" |
|---|
| 507 | return action |
|---|
| 508 | |
|---|
| 509 | def checkUserPQuota(self, userpquota) : |
|---|
| 510 | """Checks the user quota on a printer and all its parents and deny or accept the job.""" |
|---|
| 511 | user = userpquota.User |
|---|
| 512 | printer = userpquota.Printer |
|---|
| 513 | |
|---|
| 514 | # indicates that a warning needs to be sent |
|---|
| 515 | warned = 0 |
|---|
| 516 | |
|---|
| 517 | # first we check any group the user is a member of |
|---|
| 518 | for group in self.storage.getUserGroups(user) : |
|---|
| 519 | # No need to check anything if the group is in noquota mode |
|---|
| 520 | if group.LimitBy != "noquota" : |
|---|
| 521 | grouppquota = self.storage.getGroupPQuota(group, printer) |
|---|
| 522 | # for the printer and all its parents |
|---|
| 523 | for gpquota in [ grouppquota ] + grouppquota.ParentPrintersGroupPQuota : |
|---|
| 524 | if gpquota.Exists : |
|---|
| 525 | action = self.checkGroupPQuota(gpquota) |
|---|
| 526 | if action == "DENY" : |
|---|
| 527 | return action |
|---|
| 528 | elif action == "WARN" : |
|---|
| 529 | warned = 1 |
|---|
| 530 | |
|---|
| 531 | # Then we check the user's account balance |
|---|
| 532 | # if we get there we are sure that policy is not EXTERNAL |
|---|
| 533 | (policy, dummy) = self.config.getPrinterPolicy(printer.Name) |
|---|
| 534 | if user.LimitBy and (user.LimitBy.lower() == "balance") : |
|---|
| 535 | self.logdebug("Checking account balance for user %s" % user.Name) |
|---|
| 536 | if user.AccountBalance is None : |
|---|
| 537 | if policy == "ALLOW" : |
|---|
| 538 | action = "POLICY_ALLOW" |
|---|
| 539 | else : |
|---|
| 540 | action = "POLICY_DENY" |
|---|
| 541 | self.printInfo(_("Unable to find user %s's account balance, applying default policy (%s) for printer %s") % (user.Name, action, printer.Name)) |
|---|
| 542 | return action |
|---|
| 543 | else : |
|---|
| 544 | if user.OverCharge == 0.0 : |
|---|
| 545 | self.printInfo(_("User %s will not be charged for printing.") % user.Name) |
|---|
| 546 | action = "ALLOW" |
|---|
| 547 | else : |
|---|
| 548 | val = float(user.AccountBalance or 0.0) |
|---|
| 549 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
|---|
| 550 | if enforcement == "STRICT" : |
|---|
| 551 | val -= self.softwareJobPrice # use precomputed size. |
|---|
| 552 | balancezero = self.config.getBalanceZero() |
|---|
| 553 | if val <= balancezero : |
|---|
| 554 | action = "DENY" |
|---|
| 555 | elif val <= self.config.getPoorMan() : |
|---|
| 556 | action = "WARN" |
|---|
| 557 | else : |
|---|
| 558 | action = "ALLOW" |
|---|
| 559 | if (enforcement == "STRICT") and (val == balancezero) : |
|---|
| 560 | action = "WARN" # we can still print until account is 0 |
|---|
| 561 | return action |
|---|
| 562 | else : |
|---|
| 563 | # Then check the user quota on current printer and all its parents. |
|---|
| 564 | policyallowed = 0 |
|---|
| 565 | for upquota in [ userpquota ] + userpquota.ParentPrintersUserPQuota : |
|---|
| 566 | action = self._checkUserPQuota(upquota) |
|---|
| 567 | if action in ("DENY", "POLICY_DENY") : |
|---|
| 568 | return action |
|---|
| 569 | elif action == "WARN" : |
|---|
| 570 | warned = 1 |
|---|
| 571 | elif action == "POLICY_ALLOW" : |
|---|
| 572 | policyallowed = 1 |
|---|
| 573 | if warned : |
|---|
| 574 | return "WARN" |
|---|
| 575 | elif policyallowed : |
|---|
| 576 | return "POLICY_ALLOW" |
|---|
| 577 | else : |
|---|
| 578 | return "ALLOW" |
|---|
| 579 | |
|---|
| 580 | def externalMailTo(self, cmd, action, user, printer, message) : |
|---|
| 581 | """Warns the user with an external command.""" |
|---|
| 582 | username = user.Name |
|---|
| 583 | printername = printer.Name |
|---|
| 584 | email = user.Email or user.Name |
|---|
| 585 | if "@" not in email : |
|---|
| 586 | email = "%s@%s" % (email, self.maildomain or self.smtpserver) |
|---|
| 587 | os.system(cmd % locals()) |
|---|
| 588 | |
|---|
| 589 | def formatCommandLine(self, cmd, user, printer) : |
|---|
| 590 | """Executes an external command.""" |
|---|
| 591 | username = user.Name |
|---|
| 592 | printername = printer.Name |
|---|
| 593 | return cmd % locals() |
|---|
| 594 | |
|---|
| 595 | def warnGroupPQuota(self, grouppquota) : |
|---|
| 596 | """Checks a group quota and send messages if quota is exceeded on current printer.""" |
|---|
| 597 | group = grouppquota.Group |
|---|
| 598 | printer = grouppquota.Printer |
|---|
| 599 | admin = self.config.getAdmin(printer.Name) |
|---|
| 600 | adminmail = self.config.getAdminMail(printer.Name) |
|---|
| 601 | (mailto, arguments) = self.config.getMailTo(printer.Name) |
|---|
| 602 | if group.LimitBy in ("noquota", "nochange") : |
|---|
| 603 | action = "ALLOW" |
|---|
| 604 | else : |
|---|
| 605 | action = self.checkGroupPQuota(grouppquota) |
|---|
| 606 | if action.startswith("POLICY_") : |
|---|
| 607 | action = action[7:] |
|---|
| 608 | if action == "DENY" : |
|---|
| 609 | adminmessage = _("Print Quota exceeded for group %s on printer %s") % (group.Name, printer.Name) |
|---|
| 610 | self.printInfo(adminmessage) |
|---|
| 611 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 612 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 613 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 614 | for user in self.storage.getGroupMembers(group) : |
|---|
| 615 | if mailto != "EXTERNAL" : |
|---|
| 616 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), self.config.getHardWarn(printer.Name)) |
|---|
| 617 | else : |
|---|
| 618 | self.externalMailTo(arguments, action, user, printer, self.config.getHardWarn(printer.Name)) |
|---|
| 619 | elif action == "WARN" : |
|---|
| 620 | adminmessage = _("Print Quota low for group %s on printer %s") % (group.Name, printer.Name) |
|---|
| 621 | self.printInfo(adminmessage) |
|---|
| 622 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 623 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 624 | if group.LimitBy and (group.LimitBy.lower() == "balance") : |
|---|
| 625 | message = self.config.getPoorWarn() |
|---|
| 626 | else : |
|---|
| 627 | message = self.config.getSoftWarn(printer.Name) |
|---|
| 628 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 629 | for user in self.storage.getGroupMembers(group) : |
|---|
| 630 | if mailto != "EXTERNAL" : |
|---|
| 631 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), message) |
|---|
| 632 | else : |
|---|
| 633 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 634 | return action |
|---|
| 635 | |
|---|
| 636 | def warnUserPQuota(self, userpquota) : |
|---|
| 637 | """Checks a user quota and send him a message if quota is exceeded on current printer.""" |
|---|
| 638 | user = userpquota.User |
|---|
| 639 | printer = userpquota.Printer |
|---|
| 640 | admin = self.config.getAdmin(printer.Name) |
|---|
| 641 | adminmail = self.config.getAdminMail(printer.Name) |
|---|
| 642 | (mailto, arguments) = self.config.getMailTo(printer.Name) |
|---|
| 643 | |
|---|
| 644 | if user.LimitBy in ("noquota", "nochange") : |
|---|
| 645 | action = "ALLOW" |
|---|
| 646 | elif user.LimitBy == "noprint" : |
|---|
| 647 | action = "DENY" |
|---|
| 648 | message = _("User %s is not allowed to print at this time.") % user.Name |
|---|
| 649 | self.printInfo(message) |
|---|
| 650 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 651 | if mailto != "EXTERNAL" : |
|---|
| 652 | self.sendMessageToUser(admin, adminmail, user, _("Printing denied."), message) |
|---|
| 653 | else : |
|---|
| 654 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 655 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 656 | self.sendMessageToAdmin(adminmail, _("Print Quota"), message) |
|---|
| 657 | else : |
|---|
| 658 | action = self.checkUserPQuota(userpquota) |
|---|
| 659 | if action.startswith("POLICY_") : |
|---|
| 660 | action = action[7:] |
|---|
| 661 | |
|---|
| 662 | if action == "DENY" : |
|---|
| 663 | adminmessage = _("Print Quota exceeded for user %s on printer %s") % (user.Name, printer.Name) |
|---|
| 664 | self.printInfo(adminmessage) |
|---|
| 665 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 666 | message = self.config.getHardWarn(printer.Name) |
|---|
| 667 | if mailto != "EXTERNAL" : |
|---|
| 668 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), message) |
|---|
| 669 | else : |
|---|
| 670 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 671 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 672 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 673 | elif action == "WARN" : |
|---|
| 674 | adminmessage = _("Print Quota low for user %s on printer %s") % (user.Name, printer.Name) |
|---|
| 675 | self.printInfo(adminmessage) |
|---|
| 676 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 677 | if user.LimitBy and (user.LimitBy.lower() == "balance") : |
|---|
| 678 | message = self.config.getPoorWarn() |
|---|
| 679 | else : |
|---|
| 680 | message = self.config.getSoftWarn(printer.Name) |
|---|
| 681 | if mailto != "EXTERNAL" : |
|---|
| 682 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Low"), message) |
|---|
| 683 | else : |
|---|
| 684 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 685 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 686 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 687 | return action |
|---|
| 688 | |
|---|
