| 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 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 | |
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| 40 | from mx import DateTime |
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| 41 | |
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| 42 | from pykota import config, storage, logger, accounter |
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| 43 | from pykota.version import __version__, __author__, __years__, __gplblurb__ |
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| 44 | |
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| 45 | try : |
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| 46 | from pkpgpdls import analyzer, pdlparser |
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| 47 | except ImportError : # TODO : Remove the try/except after release 1.24. |
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| 48 | 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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| 49 | |
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| 50 | def N_(message) : |
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| 51 | """Fake translation marker for translatable strings extraction.""" |
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| 52 | return message |
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| 53 | |
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| 54 | class PyKotaToolError(Exception): |
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| 55 | """An exception for PyKota config related stuff.""" |
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| 56 | def __init__(self, message = ""): |
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| 57 | self.message = message |
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| 58 | Exception.__init__(self, message) |
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| 59 | def __repr__(self): |
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| 60 | return self.message |
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| 61 | __str__ = __repr__ |
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| 62 | |
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| 63 | def crashed(message="Bug in PyKota") : |
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| 64 | """Minimal crash method.""" |
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| 65 | import traceback |
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| 66 | lines = [] |
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| 67 | for line in traceback.format_exception(*sys.exc_info()) : |
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| 68 | lines.extend([l for l in line.split("\n") if l]) |
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| 69 | msg = "ERROR: ".join(["%s\n" % l for l in (["ERROR: PyKota v%s" % __version__, message] + lines)]) |
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| 70 | sys.stderr.write(msg) |
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| 71 | sys.stderr.flush() |
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| 72 | return msg |
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| 73 | |
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| 74 | class Tool : |
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| 75 | """Base class for tools with no database access.""" |
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| 76 | def __init__(self, lang="", charset=None, doc="PyKota v%(__version__)s (c) %(__years__)s %(__author__)s") : |
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| 77 | """Initializes the command line tool.""" |
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| 78 | # did we drop priviledges ? |
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| 79 | self.privdropped = 0 |
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| 80 | |
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| 81 | # locale stuff |
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| 82 | self.defaultToCLocale = 0 |
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| 83 | try : |
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| 84 | locale.setlocale(locale.LC_ALL, lang) |
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| 85 | except (locale.Error, IOError) : |
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| 86 | locale.setlocale(locale.LC_ALL, "C") |
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| 87 | self.defaultToCLocale = 1 |
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| 88 | try : |
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| 89 | gettext.install("pykota") |
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| 90 | except : |
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| 91 | gettext.NullTranslations().install() |
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| 92 | |
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| 93 | # We can force the charset. |
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| 94 | # The CHARSET environment variable is set by CUPS when printing. |
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| 95 | # Else we use the current locale's one. |
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| 96 | # If nothing is set, we use ISO-8859-15 widely used in western Europe. |
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| 97 | localecharset = None |
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| 98 | try : |
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| 99 | try : |
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| 100 | localecharset = locale.nl_langinfo(locale.CODESET) |
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| 101 | except AttributeError : |
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| 102 | try : |
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| 103 | localecharset = locale.getpreferredencoding() |
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| 104 | except AttributeError : |
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| 105 | try : |
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| 106 | localecharset = locale.getlocale()[1] |
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| 107 | localecharset = localecharset or locale.getdefaultlocale()[1] |
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| 108 | except ValueError : |
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| 109 | pass # Unknown locale, strange... |
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| 110 | except locale.Error : |
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| 111 | pass |
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| 112 | self.charset = charset or os.environ.get("CHARSET") or localecharset or "ISO-8859-15" |
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| 113 | |
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| 114 | # pykota specific stuff |
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| 115 | self.documentation = doc |
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| 116 | |
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| 117 | def deferredInit(self) : |
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| 118 | """Deferred initialization.""" |
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| 119 | # try to find the configuration files in user's 'pykota' home directory. |
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| 120 | try : |
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| 121 | self.pykotauser = pwd.getpwnam("pykota") |
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| 122 | except KeyError : |
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| 123 | self.pykotauser = None |
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| 124 | confdir = "/etc/pykota" |
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| 125 | missingUser = 1 |
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| 126 | else : |
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| 127 | confdir = self.pykotauser[5] |
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| 128 | missingUser = 0 |
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| 129 | |
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| 130 | self.config = config.PyKotaConfig(confdir) |
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| 131 | self.debug = self.config.getDebug() |
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| 132 | self.smtpserver = self.config.getSMTPServer() |
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| 133 | self.maildomain = self.config.getMailDomain() |
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| 134 | self.logger = logger.openLogger(self.config.getLoggingBackend()) |
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| 135 | |
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| 136 | # now drop priviledge if possible |
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| 137 | self.dropPriv() |
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| 138 | |
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| 139 | # We NEED this here, even when not in an accounting filter/backend |
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| 140 | self.softwareJobSize = 0 |
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| 141 | self.softwareJobPrice = 0.0 |
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| 142 | |
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| 143 | if self.defaultToCLocale : |
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| 144 | self.printInfo("Incorrect locale settings. PyKota falls back to the 'C' locale.", "warn") |
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| 145 | if missingUser : |
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| 146 | self.printInfo("The 'pykota' system account is missing. Configuration files were searched in /etc/pykota instead.", "warn") |
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| 147 | |
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| 148 | self.logdebug("Charset in use : %s" % self.charset) |
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| 149 | arguments = " ".join(['"%s"' % arg for arg in sys.argv]) |
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| 150 | self.logdebug("Command line arguments : %s" % arguments) |
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| 151 | |
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| 152 | def dropPriv(self) : |
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| 153 | """Drops priviledges.""" |
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| 154 | uid = os.geteuid() |
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| 155 | if uid : |
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| 156 | try : |
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| 157 | username = pwd.getpwuid(uid)[0] |
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| 158 | except (KeyError, IndexError), msg : |
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| 159 | self.printInfo(_("Strange problem with uid(%s) : %s") % (uid, msg), "warn") |
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| 160 | else : |
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| 161 | self.logdebug(_("Running as user '%s'.") % username) |
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| 162 | else : |
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| 163 | if self.pykotauser is None : |
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| 164 | self.logdebug(_("No user named 'pykota'. Not dropping priviledges.")) |
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| 165 | else : |
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| 166 | try : |
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| 167 | os.setegid(self.pykotauser[3]) |
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| 168 | os.seteuid(self.pykotauser[2]) |
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| 169 | except OSError, msg : |
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| 170 | self.printInfo(_("Impossible to drop priviledges : %s") % msg, "warn") |
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| 171 | else : |
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| 172 | self.logdebug(_("Priviledges dropped. Now running as user 'pykota'.")) |
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| 173 | self.privdropped = 1 |
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| 174 | |
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| 175 | def regainPriv(self) : |
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| 176 | """Drops priviledges.""" |
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| 177 | if self.privdropped : |
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| 178 | try : |
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| 179 | os.seteuid(0) |
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| 180 | os.setegid(0) |
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| 181 | except OSError, msg : |
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| 182 | self.printInfo(_("Impossible to regain priviledges : %s") % msg, "warn") |
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| 183 | else : |
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| 184 | self.logdebug(_("Regained priviledges. Now running as root.")) |
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| 185 | self.privdropped = 0 |
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| 186 | |
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| 187 | def getCharset(self) : |
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| 188 | """Returns the charset in use.""" |
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| 189 | return self.charset |
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| 190 | |
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| 191 | def logdebug(self, message) : |
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| 192 | """Logs something to debug output if debug is enabled.""" |
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| 193 | if self.debug : |
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| 194 | self.logger.log_message(message, "debug") |
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| 195 | |
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| 196 | def printInfo(self, message, level="info") : |
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| 197 | """Sends a message to standard error.""" |
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| 198 | sys.stderr.write("%s: %s\n" % (level.upper(), message)) |
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| 199 | sys.stderr.flush() |
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| 200 | |
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| 201 | def matchString(self, s, patterns) : |
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| 202 | """Returns 1 if the string s matches one of the patterns, else 0.""" |
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| 203 | for pattern in patterns : |
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| 204 | if fnmatch.fnmatchcase(s, pattern) : |
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| 205 | return 1 |
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| 206 | return 0 |
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| 207 | |
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| 208 | def display_version_and_quit(self) : |
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| 209 | """Displays version number, then exists successfully.""" |
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| 210 | try : |
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| 211 | self.clean() |
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| 212 | except AttributeError : |
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| 213 | pass |
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| 214 | print __version__ |
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| 215 | sys.exit(0) |
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| 216 | |
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| 217 | def display_usage_and_quit(self) : |
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| 218 | """Displays command line usage, then exists successfully.""" |
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| 219 | try : |
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| 220 | self.clean() |
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| 221 | except AttributeError : |
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| 222 | pass |
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| 223 | print _(self.documentation) % globals() |
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| 224 | print __gplblurb__ |
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| 225 | print |
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| 226 | print _("Please report bugs to :"), __author__ |
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| 227 | sys.exit(0) |
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| 228 | |
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| 229 | def crashed(self, message="Bug in PyKota") : |
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| 230 | """Outputs a crash message, and optionally sends it to software author.""" |
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| 231 | msg = crashed(message) |
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| 232 | fullmessage = "========== Traceback :\n\n%s\n\n========== sys.argv :\n\n%s\n\n========== Environment :\n\n%s\n" % \ |
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| 233 | (msg, \ |
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| 234 | "\n".join([" %s" % repr(a) for a in sys.argv]), \ |
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| 235 | "\n".join([" %s=%s" % (k, v) for (k, v) in os.environ.items()])) |
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| 236 | try : |
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| 237 | crashrecipient = self.config.getCrashRecipient() |
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| 238 | if crashrecipient : |
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| 239 | admin = self.config.getAdminMail("global") # Nice trick, isn't it ? |
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| 240 | server = smtplib.SMTP(self.smtpserver) |
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| 241 | server.sendmail(admin, [admin, crashrecipient], \ |
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| 242 | "From: %s\nTo: %s\nCc: %s\nSubject: PyKota v%s crash traceback !\n\n%s" % \ |
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| 243 | (admin, crashrecipient, admin, __version__, fullmessage)) |
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| 244 | server.quit() |
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| 245 | except : |
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| 246 | pass |
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| 247 | return fullmessage |
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| 248 | |
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| 249 | def parseCommandline(self, argv, short, long, allownothing=0) : |
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| 250 | """Parses the command line, controlling options.""" |
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| 251 | # split options in two lists: those which need an argument, those which don't need any |
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| 252 | withoutarg = [] |
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| 253 | witharg = [] |
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| 254 | lgs = len(short) |
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| 255 | i = 0 |
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| 256 | while i < lgs : |
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| 257 | ii = i + 1 |
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| 258 | if (ii < lgs) and (short[ii] == ':') : |
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| 259 | # needs an argument |
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| 260 | witharg.append(short[i]) |
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| 261 | ii = ii + 1 # skip the ':' |
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| 262 | else : |
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| 263 | # doesn't need an argument |
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| 264 | withoutarg.append(short[i]) |
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| 265 | i = ii |
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| 266 | |
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| 267 | for option in long : |
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| 268 | if option[-1] == '=' : |
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| 269 | # needs an argument |
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| 270 | witharg.append(option[:-1]) |
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| 271 | else : |
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| 272 | # doesn't need an argument |
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| 273 | withoutarg.append(option) |
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| 274 | |
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| 275 | # we begin with all possible options unset |
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| 276 | parsed = {} |
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| 277 | for option in withoutarg + witharg : |
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| 278 | parsed[option] = None |
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| 279 | |
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| 280 | # then we parse the command line |
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| 281 | args = [] # to not break if something unexpected happened |
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| 282 | try : |
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| 283 | options, args = getopt.getopt(argv, short, long) |
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| 284 | if options : |
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| 285 | for (o, v) in options : |
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| 286 | # we skip the '-' chars |
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| 287 | lgo = len(o) |
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| 288 | i = 0 |
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| 289 | while (i < lgo) and (o[i] == '-') : |
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| 290 | i = i + 1 |
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| 291 | o = o[i:] |
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| 292 | if o in witharg : |
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| 293 | # needs an argument : set it |
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| 294 | parsed[o] = v |
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| 295 | elif o in withoutarg : |
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| 296 | # doesn't need an argument : boolean |
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| 297 | parsed[o] = 1 |
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| 298 | else : |
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| 299 | # should never occur |
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| 300 | raise PyKotaToolError, "Unexpected problem when parsing command line" |
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| 301 | 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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| 302 | self.display_usage_and_quit() |
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| 303 | except getopt.error, msg : |
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| 304 | self.printInfo(msg) |
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| 305 | self.display_usage_and_quit() |
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| 306 | return (parsed, args) |
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| 307 | |
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| 308 | class PyKotaTool(Tool) : |
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| 309 | """Base class for all PyKota command line tools.""" |
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| 310 | def __init__(self, lang="", charset=None, doc="PyKota v%(__version__)s (c) %(__years__)s %(__author__)s") : |
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| 311 | """Initializes the command line tool and opens the database.""" |
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| 312 | Tool.__init__(self, lang, charset, doc) |
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| 313 | |
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| 314 | def deferredInit(self) : |
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| 315 | """Deferred initialization.""" |
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| 316 | Tool.deferredInit(self) |
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| 317 | self.storage = storage.openConnection(self) |
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| 318 | if self.config.isAdmin : # TODO : We don't know this before, fix this ! |
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| 319 | self.logdebug("Beware : running as a PyKota administrator !") |
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| 320 | else : |
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| 321 | self.logdebug("Don't Panic : running as a mere mortal !") |
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| 322 | |
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| 323 | def clean(self) : |
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| 324 | """Ensures that the database is closed.""" |
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| 325 | try : |
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| 326 | self.storage.close() |
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| 327 | except (TypeError, NameError, AttributeError) : |
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| 328 | pass |
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| 329 | |
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| 330 | def isValidName(self, name) : |
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| 331 | """Checks if a user or printer name is valid.""" |
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| 332 | invalidchars = "/@?*,;&|" |
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| 333 | for c in list(invalidchars) : |
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| 334 | if c in name : |
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| 335 | return 0 |
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| 336 | return 1 |
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| 337 | |
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| 338 | def sendMessage(self, adminmail, touser, fullmessage) : |
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| 339 | """Sends an email message containing headers to some user.""" |
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| 340 | if "@" not in touser : |
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| 341 | touser = "%s@%s" % (touser, self.maildomain or self.smtpserver) |
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| 342 | try : |
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| 343 | server = smtplib.SMTP(self.smtpserver) |
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| 344 | except socket.error, msg : |
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| 345 | self.printInfo(_("Impossible to connect to SMTP server : %s") % msg, "error") |
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| 346 | else : |
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| 347 | try : |
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| 348 | server.sendmail(adminmail, [touser], "From: %s\nTo: %s\n%s" % (adminmail, touser, fullmessage)) |
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| 349 | except smtplib.SMTPException, answer : |
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| 350 | for (k, v) in answer.recipients.items() : |
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| 351 | self.printInfo(_("Impossible to send mail to %s, error %s : %s") % (k, v[0], v[1]), "error") |
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| 352 | server.quit() |
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| 353 | |
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| 354 | def sendMessageToUser(self, admin, adminmail, user, subject, message) : |
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| 355 | """Sends an email message to a user.""" |
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| 356 | message += _("\n\nPlease contact your system administrator :\n\n\t%s - <%s>\n") % (admin, adminmail) |
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| 357 | self.sendMessage(adminmail, user.Email or user.Name, "Subject: %s\n\n%s" % (subject, message)) |
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| 358 | |
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| 359 | def sendMessageToAdmin(self, adminmail, subject, message) : |
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| 360 | """Sends an email message to the Print Quota administrator.""" |
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| 361 | self.sendMessage(adminmail, adminmail, "Subject: %s\n\n%s" % (subject, message)) |
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| 362 | |
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| 363 | def _checkUserPQuota(self, userpquota) : |
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| 364 | """Checks the user quota on a printer and deny or accept the job.""" |
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| 365 | # then we check the user's own quota |
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| 366 | # if we get there we are sure that policy is not EXTERNAL |
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| 367 | user = userpquota.User |
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| 368 | printer = userpquota.Printer |
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| 369 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
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| 370 | self.logdebug("Checking user %s's quota on printer %s" % (user.Name, printer.Name)) |
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| 371 | (policy, dummy) = self.config.getPrinterPolicy(userpquota.Printer.Name) |
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| 372 | if not userpquota.Exists : |
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| 373 | # Unknown userquota |
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| 374 | if policy == "ALLOW" : |
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| 375 | action = "POLICY_ALLOW" |
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| 376 | else : |
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| 377 | action = "POLICY_DENY" |
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| 378 | self.printInfo(_("Unable to match user %s on printer %s, applying default policy (%s)") % (user.Name, printer.Name, action)) |
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| 379 | else : |
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| 380 | pagecounter = int(userpquota.PageCounter or 0) |
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| 381 | if enforcement == "STRICT" : |
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| 382 | pagecounter += self.softwareJobSize |
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| 383 | if userpquota.SoftLimit is not None : |
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| 384 | softlimit = int(userpquota.SoftLimit) |
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| 385 | if pagecounter < softlimit : |
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| 386 | action = "ALLOW" |
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| 387 | else : |
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| 388 | if userpquota.HardLimit is None : |
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| 389 | # only a soft limit, this is equivalent to having only a hard limit |
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| 390 | action = "DENY" |
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| 391 | else : |
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| 392 | hardlimit = int(userpquota.HardLimit) |
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| 393 | if softlimit <= pagecounter < hardlimit : |
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| 394 | now = DateTime.now() |
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| 395 | if userpquota.DateLimit is not None : |
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| 396 | datelimit = DateTime.ISO.ParseDateTime(userpquota.DateLimit) |
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| 397 | else : |
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| 398 | datelimit = now + self.config.getGraceDelay(printer.Name) |
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| 399 | userpquota.setDateLimit(datelimit) |
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| 400 | if now < datelimit : |
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| 401 | action = "WARN" |
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| 402 | else : |
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| 403 | action = "DENY" |
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| 404 | else : |
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| 405 | action = "DENY" |
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| 406 | else : |
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| 407 | if userpquota.HardLimit is not None : |
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| 408 | # no soft limit, only a hard one. |
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| 409 | hardlimit = int(userpquota.HardLimit) |
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| 410 | if pagecounter < hardlimit : |
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| 411 | action = "ALLOW" |
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| 412 | else : |
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| 413 | action = "DENY" |
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| 414 | else : |
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| 415 | # Both are unset, no quota, i.e. accounting only |
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| 416 | action = "ALLOW" |
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| 417 | return action |
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| 418 | |
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| 419 | def checkGroupPQuota(self, grouppquota) : |
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| 420 | """Checks the group quota on a printer and deny or accept the job.""" |
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| 421 | group = grouppquota.Group |
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| 422 | printer = grouppquota.Printer |
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| 423 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
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| 424 | self.logdebug("Checking group %s's quota on printer %s" % (group.Name, printer.Name)) |
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| 425 | if group.LimitBy and (group.LimitBy.lower() == "balance") : |
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| 426 | val = group.AccountBalance or 0.0 |
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| 427 | if enforcement == "STRICT" : |
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| 428 | val -= self.softwareJobPrice # use precomputed size. |
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| 429 | if val <= 0.0 : |
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| 430 | action = "DENY" |
|---|
| 431 | elif val <= self.config.getPoorMan() : |
|---|
| 432 | action = "WARN" |
|---|
| 433 | else : |
|---|
| 434 | action = "ALLOW" |
|---|
| 435 | if (enforcement == "STRICT") and (val == 0.0) : |
|---|
| 436 | action = "WARN" # we can still print until account is 0 |
|---|
| 437 | else : |
|---|
| 438 | val = grouppquota.PageCounter or 0 |
|---|
| 439 | if enforcement == "STRICT" : |
|---|
| 440 | val += self.softwareJobSize |
|---|
| 441 | if grouppquota.SoftLimit is not None : |
|---|
| 442 | softlimit = int(grouppquota.SoftLimit) |
|---|
| 443 | if val < softlimit : |
|---|
| 444 | action = "ALLOW" |
|---|
| 445 | else : |
|---|
| 446 | if grouppquota.HardLimit is None : |
|---|
| 447 | # only a soft limit, this is equivalent to having only a hard limit |
|---|
| 448 | action = "DENY" |
|---|
| 449 | else : |
|---|
| 450 | hardlimit = int(grouppquota.HardLimit) |
|---|
| 451 | if softlimit <= val < hardlimit : |
|---|
| 452 | now = DateTime.now() |
|---|
| 453 | if grouppquota.DateLimit is not None : |
|---|
| 454 | datelimit = DateTime.ISO.ParseDateTime(grouppquota.DateLimit) |
|---|
| 455 | else : |
|---|
| 456 | datelimit = now + self.config.getGraceDelay(printer.Name) |
|---|
| 457 | grouppquota.setDateLimit(datelimit) |
|---|
| 458 | if now < datelimit : |
|---|
| 459 | action = "WARN" |
|---|
| 460 | else : |
|---|
| 461 | action = "DENY" |
|---|
| 462 | else : |
|---|
| 463 | action = "DENY" |
|---|
| 464 | else : |
|---|
| 465 | if grouppquota.HardLimit is not None : |
|---|
| 466 | # no soft limit, only a hard one. |
|---|
| 467 | hardlimit = int(grouppquota.HardLimit) |
|---|
| 468 | if val < hardlimit : |
|---|
| 469 | action = "ALLOW" |
|---|
| 470 | else : |
|---|
| 471 | action = "DENY" |
|---|
| 472 | else : |
|---|
| 473 | # Both are unset, no quota, i.e. accounting only |
|---|
| 474 | action = "ALLOW" |
|---|
| 475 | return action |
|---|
| 476 | |
|---|
| 477 | def checkUserPQuota(self, userpquota) : |
|---|
| 478 | """Checks the user quota on a printer and all its parents and deny or accept the job.""" |
|---|
| 479 | user = userpquota.User |
|---|
| 480 | printer = userpquota.Printer |
|---|
| 481 | |
|---|
| 482 | # indicates that a warning needs to be sent |
|---|
| 483 | warned = 0 |
|---|
| 484 | |
|---|
| 485 | # first we check any group the user is a member of |
|---|
| 486 | for group in self.storage.getUserGroups(user) : |
|---|
| 487 | grouppquota = self.storage.getGroupPQuota(group, printer) |
|---|
| 488 | # for the printer and all its parents |
|---|
| 489 | for gpquota in [ grouppquota ] + grouppquota.ParentPrintersGroupPQuota : |
|---|
| 490 | if gpquota.Exists : |
|---|
| 491 | action = self.checkGroupPQuota(gpquota) |
|---|
| 492 | if action == "DENY" : |
|---|
| 493 | return action |
|---|
| 494 | elif action == "WARN" : |
|---|
| 495 | warned = 1 |
|---|
| 496 | |
|---|
| 497 | # Then we check the user's account balance |
|---|
| 498 | # if we get there we are sure that policy is not EXTERNAL |
|---|
| 499 | (policy, dummy) = self.config.getPrinterPolicy(printer.Name) |
|---|
| 500 | if user.LimitBy and (user.LimitBy.lower() == "balance") : |
|---|
| 501 | self.logdebug("Checking account balance for user %s" % user.Name) |
|---|
| 502 | if user.AccountBalance is None : |
|---|
| 503 | if policy == "ALLOW" : |
|---|
| 504 | action = "POLICY_ALLOW" |
|---|
| 505 | else : |
|---|
| 506 | action = "POLICY_DENY" |
|---|
| 507 | self.printInfo(_("Unable to find user %s's account balance, applying default policy (%s) for printer %s") % (user.Name, action, printer.Name)) |
|---|
| 508 | return action |
|---|
| 509 | else : |
|---|
| 510 | if user.OverCharge == 0.0 : |
|---|
| 511 | self.printInfo(_("User %s will not be charged for printing.") % user.Name) |
|---|
| 512 | action = "ALLOW" |
|---|
| 513 | else : |
|---|
| 514 | val = float(user.AccountBalance or 0.0) |
|---|
| 515 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
|---|
| 516 | if enforcement == "STRICT" : |
|---|
| 517 | val -= self.softwareJobPrice # use precomputed size. |
|---|
| 518 | if val <= 0.0 : |
|---|
| 519 | action = "DENY" |
|---|
| 520 | elif val <= self.config.getPoorMan() : |
|---|
| 521 | action = "WARN" |
|---|
| 522 | else : |
|---|
| 523 | action = "ALLOW" |
|---|
| 524 | if (enforcement == "STRICT") and (val == 0.0) : |
|---|
| 525 | action = "WARN" # we can still print until account is 0 |
|---|
| 526 | return action |
|---|
| 527 | else : |
|---|
| 528 | # Then check the user quota on current printer and all its parents. |
|---|
| 529 | policyallowed = 0 |
|---|
| 530 | for upquota in [ userpquota ] + userpquota.ParentPrintersUserPQuota : |
|---|
| 531 | action = self._checkUserPQuota(upquota) |
|---|
| 532 | if action in ("DENY", "POLICY_DENY") : |
|---|
| 533 | return action |
|---|
| 534 | elif action == "WARN" : |
|---|
| 535 | warned = 1 |
|---|
| 536 | elif action == "POLICY_ALLOW" : |
|---|
| 537 | policyallowed = 1 |
|---|
| 538 | if warned : |
|---|
| 539 | return "WARN" |
|---|
| 540 | elif policyallowed : |
|---|
| 541 | return "POLICY_ALLOW" |
|---|
| 542 | else : |
|---|
| 543 | return "ALLOW" |
|---|
| 544 | |
|---|
| 545 | def externalMailTo(self, cmd, action, user, printer, message) : |
|---|
| 546 | """Warns the user with an external command.""" |
|---|
| 547 | username = user.Name |
|---|
| 548 | printername = printer.Name |
|---|
| 549 | email = user.Email or user.Name |
|---|
| 550 | if "@" not in email : |
|---|
| 551 | email = "%s@%s" % (email, self.maildomain or self.smtpserver) |
|---|
| 552 | os.system(cmd % locals()) |
|---|
| 553 | |
|---|
| 554 | def formatCommandLine(self, cmd, user, printer) : |
|---|
| 555 | """Executes an external command.""" |
|---|
| 556 | username = user.Name |
|---|
| 557 | printername = printer.Name |
|---|
| 558 | return cmd % locals() |
|---|
| 559 | |
|---|
| 560 | def warnGroupPQuota(self, grouppquota) : |
|---|
| 561 | """Checks a group quota and send messages if quota is exceeded on current printer.""" |
|---|
| 562 | group = grouppquota.Group |
|---|
| 563 | printer = grouppquota.Printer |
|---|
| 564 | admin = self.config.getAdmin(printer.Name) |
|---|
| 565 | adminmail = self.config.getAdminMail(printer.Name) |
|---|
| 566 | (mailto, arguments) = self.config.getMailTo(printer.Name) |
|---|
| 567 | action = self.checkGroupPQuota(grouppquota) |
|---|
| 568 | if action.startswith("POLICY_") : |
|---|
| 569 | action = action[7:] |
|---|
| 570 | if action == "DENY" : |
|---|
| 571 | adminmessage = _("Print Quota exceeded for group %s on printer %s") % (group.Name, printer.Name) |
|---|
| 572 | self.printInfo(adminmessage) |
|---|
| 573 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 574 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 575 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 576 | for user in self.storage.getGroupMembers(group) : |
|---|
| 577 | if mailto != "EXTERNAL" : |
|---|
| 578 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), self.config.getHardWarn(printer.Name)) |
|---|
| 579 | else : |
|---|
| 580 | self.externalMailTo(arguments, action, user, printer, self.config.getHardWarn(printer.Name)) |
|---|
| 581 | elif action == "WARN" : |
|---|
| 582 | adminmessage = _("Print Quota low for group %s on printer %s") % (group.Name, printer.Name) |
|---|
| 583 | self.printInfo(adminmessage) |
|---|
| 584 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 585 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 586 | if group.LimitBy and (group.LimitBy.lower() == "balance") : |
|---|
| 587 | message = self.config.getPoorWarn() |
|---|
| 588 | else : |
|---|
| 589 | message = self.config.getSoftWarn(printer.Name) |
|---|
| 590 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 591 | for user in self.storage.getGroupMembers(group) : |
|---|
| 592 | if mailto != "EXTERNAL" : |
|---|
| 593 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), message) |
|---|
| 594 | else : |
|---|
| 595 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 596 | return action |
|---|
| 597 | |
|---|
| 598 | def warnUserPQuota(self, userpquota) : |
|---|
| 599 | """Checks a user quota and send him a message if quota is exceeded on current printer.""" |
|---|
| 600 | user = userpquota.User |
|---|
| 601 | printer = userpquota.Printer |
|---|
| 602 | admin = self.config.getAdmin(printer.Name) |
|---|
| 603 | adminmail = self.config.getAdminMail(printer.Name) |
|---|
| 604 | (mailto, arguments) = self.config.getMailTo(printer.Name) |
|---|
| 605 | action = self.checkUserPQuota(userpquota) |
|---|
| 606 | if action.startswith("POLICY_") : |
|---|
| 607 | action = action[7:] |
|---|
| 608 | |
|---|
| 609 | if action == "DENY" : |
|---|
| 610 | adminmessage = _("Print Quota exceeded for user %s on printer %s") % (user.Name, printer.Name) |
|---|
| 611 | self.printInfo(adminmessage) |
|---|
| 612 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 613 | message = self.config.getHardWarn(printer.Name) |
|---|
| 614 | if mailto != "EXTERNAL" : |
|---|
| 615 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), message) |
|---|
| 616 | else : |
|---|
| 617 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 618 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 619 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 620 | elif action == "WARN" : |
|---|
| 621 | adminmessage = _("Print Quota low for user %s on printer %s") % (user.Name, printer.Name) |
|---|
| 622 | self.printInfo(adminmessage) |
|---|
| 623 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 624 | if user.LimitBy and (user.LimitBy.lower() == "balance") : |
|---|
| 625 | message = self.config.getPoorWarn() |
|---|
| 626 | else : |
|---|
| 627 | message = self.config.getSoftWarn(printer.Name) |
|---|
| 628 | if mailto != "EXTERNAL" : |
|---|
| 629 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Low"), message) |
|---|
| 630 | else : |
|---|
| 631 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 632 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 633 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 634 | return action |
|---|
| 635 | |
|---|
| 636 | class PyKotaFilterOrBackend(PyKotaTool) : |
|---|
| 637 | """Class for the PyKota filter or backend.""" |
|---|
| 638 | def __init__(self) : |
|---|
| 639 | """Initialize local datas from current environment.""" |
|---|
| 640 | # We begin with ignoring signals, we may de-ignore them later on. |
|---|
| 641 | self.gotSigTerm = 0 |
|---|
| 642 | signal.signal(signal.SIGTERM, signal.SIG_IGN) |
|---|
| 643 | # signal.signal(signal.SIGCHLD, signal.SIG_IGN) |
|---|
| 644 | signal.signal(signal.SIGPIPE, signal.SIG_IGN) |
|---|
| 645 | |
|---|
| 646 | PyKotaTool.__init__(self) |
|---|
| 647 | (self.printingsystem, \ |
|---|
| 648 | self.printerhostname, \ |
|---|
| 649 | self.printername, \ |
|---|
| 650 | self.username, \ |
|---|
| 651 | self.jobid, \ |
|---|
| 652 | self.inputfile, \ |
|---|
| 653 | self.copies, \ |
|---|
| 654 | self.title, \ |
|---|
| 655 | self.options, \ |
|---|
| 656 | self.originalbackend) = self.extractInfoFromCupsOrLprng() |
|---|
| 657 | |
|---|
| 658 | def deferredInit(self) : |
|---|
| 659 | """Deferred initialization.""" |
|---|
| 660 | PyKotaTool.deferredInit(self) |
|---|
| 661 | |
|---|
| 662 | arguments = " ".join(['"%s"' % arg for arg in sys.argv]) |
|---|
| 663 | self.logdebug(_("Printing system %s, args=%s") % (str(self.printingsystem), arguments)) |
|---|
| 664 | |
|---|
| 665 | self.username = self.username or pwd.getpwuid(os.geteuid())[0] # use CUPS' user when printing test page from CUPS web interface, otherwise username is empty |
|---|
| 666 | |
|---|
| 667 | if self.printingsystem == "CUPS" : |
|---|
| 668 | self.extractDatasFromCups() |
|---|
| 669 | |
|---|
| 670 | (newusername, newbillingcode, newaction) = self.overwriteJobTicket() |
|---|
| 671 | if newusername : |
|---|
| 672 | self.printInfo(_("Job ticket overwritten : new username = [%s]") % newusername) |
|---|
| 673 | self.username = newusername |
|---|
| 674 | if newbillingcode : |
|---|
| 675 | self.printInfo(_("Job ticket overwritten : new billing code = [%s]") % newbillingcode) |
|---|
| 676 | self.overwrittenBillingCode = newbillingcode |
|---|
| 677 | else : |
|---|
| 678 | self.overwrittenBillingCode = None |
|---|
| 679 | if newaction : |
|---|
| 680 | self.printInfo(_("Job ticket overwritten : job will be denied (but a bit later).")) |
|---|
| 681 | self.mustDeny = 1 |
|---|
| 682 | else : |
|---|
| 683 | self.mustDeny = 0 |
|---|
| 684 | |
|---|
| 685 | # do we want to strip out the Samba/Winbind domain name ? |
|---|
| 686 | separator = self.config.getWinbindSeparator() |
|---|
| 687 | if separator is not None : |
|---|
| 688 | self.username = self.username.split(separator)[-1] |
|---|
| 689 | |
|---|
| 690 | # do we want to lowercase usernames ? |
|---|
| 691 | if self.config.getUserNameToLower() : |
|---|
| 692 | self.username = self.username.lower() |
|---|
| 693 | |
|---|
| 694 | # do we want to strip some prefix off of titles ? |
|---|
| 695 | stripprefix = self.config.getStripTitle(self.printername) |
|---|
| 696 | if stripprefix : |
|---|
| 697 | if fnmatch.fnmatch(self.title[:len(stripprefix)], stripprefix) : |
|---|
| 698 | self.logdebug("Prefix [%s] removed from job's title [%s]." % (stripprefix, self.title)) |
|---|
| 699 | self.title = self.title[len(stripprefix):] |
|---|
| 700 | |
|---|
| 701 | self.preserveinputfile = self.inputfile |
|---|
| 702 | try : |
|---|
| 703 | self.accounter = accounter.openAccounter(self) |
|---|
| 704 | except (config.PyKotaConfigError, accounter.PyKotaAccounterError), msg : |
|---|
| 705 | self.crashed(msg) |
|---|
| 706 | raise |
|---|
| 707 | self.exportJobInfo() |
|---|
| 708 | self.jobdatastream = self.openJobDataStream() |
|---|
| 709 | self.checksum = self.computeChecksum() |
|---|
| 710 | self.softwareJobSize = self.precomputeJobSize() |
|---|
| 711 | os.environ["PYKOTAPRECOMPUTEDJOBSIZE"] = str(self.softwareJobSize) |
|---|
| 712 | os.environ["PYKOTAJOBSIZEBYTES"] = str(self.jobSizeBytes) |
|---|
| 713 | self.logdebug("Job size is %s bytes on %s pages." % (self.jobSizeBytes, self.softwareJobSize)) |
|---|
| 714 | self.logdebug("Capturing SIGTERM events.") |
|---|
| 715 | signal.signal(signal.SIGTERM, self.sigterm_handler) |
|---|
| 716 | |
|---|
| 717 | def overwriteJobTicket(self) : |
|---|
| 718 | """Should we overwrite the job's ticket (username and billingcode) ?""" |
|---|
| 719 | jobticketcommand = self.config.getOverwriteJobTicket(self.printername) |
|---|
| 720 | if jobticketcommand is not None : |
|---|
| 721 | username = billingcode = action = None |
|---|
| 722 | self.logdebug("Launching subprocess [%s] to overwrite the job's ticket." % jobticketcommand) |
|---|
| 723 | inputfile = os.popen(jobticketcommand, "r") |
|---|
| 724 | for line in inputfile.xreadlines() : |
|---|
| 725 | line = line.strip() |
|---|
| 726 | if line == "DENY" : |
|---|
| 727 | self.logdebug("Seen DENY command.") |
|---|
| 728 | action = "DENY" |
|---|
| 729 | elif line.startswith("USERNAME=") : |
|---|
| 730 | username = line.split("=", 1)[1].strip() |
|---|
| 731 | self.logdebug("Seen new username [%s]" % username) |
|---|
| 732 | action = None |
|---|
| 733 | elif line.startswith("BILLINGCODE=") : |
|---|
| 734 | billingcode = line.split("=", 1)[1].strip() |
|---|
| 735 | self.logdebug("Seen new billing code [%s]" % billingcode) |
|---|
| 736 | action = None |
|---|
| 737 | inputfile.close() |
|---|
| 738 | return (username, billingcode, action) |
|---|
| 739 | else : |
|---|
| 740 | return (None, None, None) |
|---|
| 741 | |
|---|
| 742 | def sendBackChannelData(self, message, level="info") : |
|---|
| 743 | """Sends an informational message to CUPS via back channel stream (stderr).""" |
|---|
| 744 | sys.stderr.write("%s: PyKota (PID %s) : %s\n" % (level.upper(), os.getpid(), message.strip())) |
|---|
| 745 | sys.stderr.flush() |
|---|
| 746 | |
|---|
| 747 | def computeChecksum(self) : |
|---|
| 748 | """Computes the MD5 checksum of the job's datas, to be able to detect and forbid duplicate jobs.""" |
|---|
| 749 | self.logdebug("Computing MD5 checksum for job %s" % self.jobid) |
|---|
| 750 | MEGABYTE = 1024*1024 |
|---|
| 751 | checksum = md5.new() |
|---|
| 752 | while 1 : |
|---|
| 753 | data = self.jobdatastream.read(MEGABYTE) |
|---|
| 754 | if not data : |
|---|
| 755 | break |
|---|
| 756 | checksum.update(data) |
|---|
| 757 | self.jobdatastream.seek(0) |
|---|
| 758 | digest = checksum.hexdigest() |
|---|
| 759 | self.logdebug("MD5 checksum for job %s is %s" % (self.jobid, digest)) |
|---|
| 760 | os.environ["PYKOTAMD5SUM"] = digest |
|---|
| 761 | return digest |
|---|
| 762 | |
|---|
| 763 | def openJobDataStream(self) : |
|---|
| 764 | """Opens the file which contains the job's datas.""" |
|---|
| 765 | if self.preserveinputfile is None : |
|---|
| 766 | # Job comes from sys.stdin, but this is not |
|---|
| 767 | # seekable and complexifies our task, so create |
|---|
| 768 | # a temporary file and use it instead |
|---|
| 769 | self.logdebug("Duplicating data stream from stdin to temporary file") |
|---|
| 770 | dummy = 0 |
|---|
| 771 | MEGABYTE = 1024*1024 |
|---|
| 772 | self.jobSizeBytes = 0 |
|---|
| 773 | infile = tempfile.TemporaryFile() |
|---|
| 774 | while 1 : |
|---|
| 775 | data = sys.stdin.read(MEGABYTE) |
|---|
| 776 | if not data : |
|---|
| 777 | break |
|---|
| 778 | self.jobSizeBytes += len(data) |
|---|
| 779 | if not (dummy % 10) : |
|---|
| 780 | self.logdebug("%s bytes read..." % self.jobSizeBytes) |
|---|
| 781 | dummy += 1 |
|---|
| 782 | infile.write(data) |
|---|
| 783 | self.logdebug("%s bytes read total." % self.jobSizeBytes) |
|---|
| 784 | infile.flush() |
|---|
| 785 | infile.seek(0) |
|---|
| 786 | return infile |
|---|
| 787 | else : |
|---|
| 788 | # real file, just open it |
|---|
| 789 | self.regainPriv() |
|---|
| 790 | self.logdebug("Opening data stream %s" % self.preserveinputfile) |
|---|
| 791 | self.jobSizeBytes = os.stat(self.preserveinputfile)[6] |
|---|
| 792 | infile = open(self.preserveinputfile, "rb") |
|---|
| 793 | self.dropPriv() |
|---|
| 794 | return infile |
|---|
| 795 | |
|---|
| 796 | def closeJobDataStream(self) : |
|---|
| 797 | """Closes the file which contains the job's datas.""" |
|---|
| 798 | self.logdebug("Closing data stream.") |
|---|
| 799 | try : |
|---|
| 800 | self.jobdatastream.close() |
|---|
| 801 | except : |
|---|
| 802 | pass |
|---|
| 803 | |
|---|
| 804 | def precomputeJobSize(self) : |
|---|
| 805 | """Computes the job size with a software method.""" |
|---|
| 806 | self.logdebug("Precomputing job's size with generic PDL analyzer...") |
|---|
| 807 | self.jobdatastream.seek(0) |
|---|
| 808 | try : |
|---|
| 809 | parser = analyzer.PDLAnalyzer(self.jobdatastream) |
|---|
| 810 | jobsize = parser.getJobSize() |
|---|
| 811 | except pdlparser.PDLParserError, msg : |
|---|
| 812 | # Here we just log the failure, but |
|---|
| 813 | # we finally ignore it and return 0 since this |
|---|
| 814 | # computation is just an indication of what the |
|---|
| 815 | # job's size MAY be. |
|---|
| 816 | self.printInfo(_("Unable to precompute the job's size with the generic PDL analyzer : %s") % msg, "warn") |
|---|
| 817 | return 0 |
|---|
| 818 | else : |
|---|
| 819 | if ((self.printingsystem == "CUPS") \ |
|---|
| 820 | and (self.preserveinputfile is not None)) \ |
|---|
| 821 | or (self.printingsystem != "CUPS") : |
|---|
| 822 | return jobsize * self.copies |
|---|
| 823 | else : |
|---|
| 824 | return jobsize |
|---|
| 825 | |
|---|
| 826 | def sigterm_handler(self, signum, frame) : |
|---|
| 827 | """Sets an attribute whenever SIGTERM is received.""" |
|---|
| 828 | self.gotSigTerm = 1 |
|---|
| 829 | os.environ["PYKOTASTATUS"] = "CANCELLED" |
|---|
| 830 | self.printInfo(_("SIGTERM received, job %s cancelled.") % self.jobid) |
|---|
| 831 | |
|---|
| 832 | def exportJobInfo(self) : |
|---|
| 833 | """Exports job information to the environment.""" |
|---|
| 834 | os.environ["PYKOTAUSERNAME"] = str(self.username) |
|---|
| 835 | os.environ["PYKOTAPRINTERNAME"] = str(self.printername) |
|---|
| 836 | os.environ["PYKOTAJOBID"] = str(self.jobid) |
|---|
| 837 | os.environ["PYKOTATITLE"] = self.title or "" |
|---|
| 838 | os.environ["PYKOTAFILENAME"] = self.preserveinputfile or "" |
|---|
| 839 | os.environ["PYKOTACOPIES"] = str(self.copies) |
|---|
| 840 | os.environ["PYKOTAOPTIONS"] = self.options or "" |
|---|
| 841 | os.environ["PYKOTAPRINTERHOSTNAME"] = self.printerhostname or "localhost" |
|---|
| 842 | |
|---|
| 843 | def exportUserInfo(self, userpquota) : |
|---|
| 844 | """Exports user information to the environment.""" |
|---|
| 845 | os.environ["PYKOTAOVERCHARGE"] = str(userpquota.User.OverCharge) |
|---|
| 846 | os.environ["PYKOTALIMITBY"] = str(userpquota.User.LimitBy) |
|---|
| 847 | os.environ["PYKOTABALANCE"] = str(userpquota.User.AccountBalance or 0.0) |
|---|
| 848 | os.environ["PYKOTALIFETIMEPAID"] = str(userpquota.User.LifeTimePaid or 0.0) |
|---|
| 849 | os.environ["PYKOTAPAGECOUNTER"] = str(userpquota.PageCounter or 0) |
|---|
| 850 | os.environ["PYKOTALIFEPAGECOUNTER"] = str(userpquota.LifePageCounter or 0) |
|---|
| 851 | os.environ["PYKOTASOFTLIMIT"] = str(userpquota.SoftLimit) |
|---|
| 852 | os.environ["PYKOTAHARDLIMIT"] = str(userpquota.HardLimit) |
|---|
| 853 | os.environ["PYKOTADATELIMIT"] = str(userpquota.DateLimit) |
|---|
| 854 | os.environ["PYKOTAWARNCOUNT"] = str(userpquota.WarnCount) |
|---|
| 855 | |
|---|
| 856 | # not really an user information, but anyway |
|---|
| 857 | # exports the list of printers groups the current |
|---|
| 858 | # printer is a member of |
|---|
| 859 | os.environ["PYKOTAPGROUPS"] = ",".join([p.Name for p in self.storage.getParentPrinters(userpquota.Printer)]) |
|---|
| 860 | |
|---|
| 861 | def prehook(self, userpquota) : |
|---|
| 862 | """Allows plugging of an external hook before the job gets printed.""" |
|---|
| 863 | prehook = self.config.getPreHook(userpquota.Printer.Name) |
|---|
| 864 | if prehook : |
|---|
| 865 | self.logdebug("Executing pre-hook [%s]" % prehook) |
|---|
| 866 | os.system(prehook) |
|---|
| 867 | |
|---|
| 868 | def posthook(self, userpquota) : |
|---|
| 869 | """Allows plugging of an external hook after the job gets printed and/or denied.""" |
|---|
| 870 | posthook = self.config.getPostHook(userpquota.Printer.Name) |
|---|
| 871 | if posthook : |
|---|
| 872 | self.logdebug("Executing post-hook [%s]" % posthook) |
|---|
| 873 | os.system(posthook) |
|---|
| 874 | |
|---|
| 875 | def printInfo(self, message, level="info") : |
|---|
| 876 | """Sends a message to standard error.""" |
|---|
| 877 | self.logger.log_message("%s" % message, level) |
|---|
| 878 | |
|---|
| 879 | def printMoreInfo(self, user, printer, message, level="info") : |
|---|
| 880 | """Prefixes the information printed with 'user@printer(jobid) =>'.""" |
|---|
| 881 | self.printInfo("%s@%s(%s) => %s" % (getattr(user, "Name", None), getattr(printer, "Name", None), self.jobid, message), level) |
|---|
| 882 | |
|---|
| 883 | def extractInfoFromCupsOrLprng(self) : |
|---|
| 884 | """Returns a tuple (printingsystem, printerhostname, printername, username, jobid, filename, title, options, backend). |
|---|
| 885 | |
|---|
| 886 | Returns (None, None, None, None, None, None, None, None, None, None) if no printing system is recognized. |
|---|
| 887 | """ |
|---|
| 888 | # Try to detect CUPS |
|---|
| 889 | if os.environ.has_key("CUPS_SERVERROOT") and os.path.isdir(os.environ.get("CUPS_SERVERROOT", "")) : |
|---|
| 890 | if len(sys.argv) == 7 : |
|---|
| 891 | inputfile = sys.argv[6] |
|---|
| 892 | else : |
|---|
| 893 | inputfile = None |
|---|
| 894 | |
|---|
| 895 | # check that the DEVICE_URI environment variable's value is |
|---|
| 896 | # prefixed with "cupspykota:" otherwise don't touch it. |
|---|
| 897 | # If this is the case, we have to remove the prefix from |
|---|
| 898 | # the environment before launching the real backend in cupspykota |
|---|
| 899 | device_uri = os.environ.get("DEVICE_URI", "") |
|---|
| 900 | if device_uri.startswith("cupspykota:") : |
|---|
| 901 | fulldevice_uri = device_uri[:] |
|---|
| 902 | device_uri = fulldevice_uri[len("cupspykota:"):] |
|---|
| 903 | if device_uri.startswith("//") : # lpd (at least) |
|---|
| 904 | device_uri = device_uri[2:] |
|---|
| 905 | os.environ["DEVICE_URI"] = device_uri # TODO : side effect ! |
|---|
| 906 | # TODO : check this for more complex urls than ipp://myprinter.dot.com:631/printers/lp |
|---|
| 907 | try : |
|---|
| 908 | (backend, destination) = device_uri.split(":", 1) |
|---|
| 909 | except ValueError : |
|---|
| 910 | raise PyKotaToolError, "Invalid DEVICE_URI : %s\n" % device_uri |
|---|
| 911 | while destination.startswith("/") : |
|---|
| 912 | destination = destination[1:] |
|---|
| 913 | checkauth = destination.split("@", 1) |
|---|
| 914 | if len(checkauth) == 2 : |
|---|
| 915 | destination = checkauth[1] |
|---|
| 916 | printerhostname = destination.split("/")[0].split(":")[0] |
|---|
| 917 | return ("CUPS", \ |
|---|
| 918 | printerhostname, \ |
|---|
| 919 | os.environ.get("PRINTER"), \ |
|---|
| 920 | sys.argv[2].strip(), \ |
|---|
| 921 | sys.argv[1].strip(), \ |
|---|
| 922 | inputfile, \ |
|---|
| 923 | int(sys.argv[4].strip()), \ |
|---|
| 924 | sys.argv[3], \ |
|---|
| 925 | sys.argv[5], \ |
|---|
| 926 | backend) |
|---|
| 927 | else : |
|---|
| 928 | # Try to detect LPRng |
|---|
| 929 | # TODO : try to extract filename, options if available |
|---|
| 930 | jseen = Jseen = Pseen = nseen = rseen = Kseen = None |
|---|
| 931 | for arg in sys.argv : |
|---|
| 932 | if arg.startswith("-j") : |
|---|
| 933 | jseen = arg[2:].strip() |
|---|
| 934 | elif arg.startswith("-n") : |
|---|
| 935 | nseen = arg[2:].strip() |
|---|
| 936 | elif arg.startswith("-P") : |
|---|
| 937 | Pseen = arg[2:].strip() |
|---|
| 938 | elif arg.startswith("-r") : |
|---|
| 939 | rseen = arg[2:].strip() |
|---|
| 940 | elif arg.startswith("-J") : |
|---|
| 941 | Jseen = arg[2:].strip() |
|---|
| 942 | elif arg.startswith("-K") or arg.startswith("-#") : |
|---|
| 943 | Kseen = int(arg[2:].strip()) |
|---|
| 944 | if Kseen is None : |
|---|
| 945 | Kseen = 1 # we assume the user wants at least one copy... |
|---|
| 946 | if (rseen is None) and jseen and Pseen and nseen : |
|---|
| 947 | lparg = [arg for arg in "".join(os.environ.get("PRINTCAP_ENTRY", "").split()).split(":") if arg.startswith("rm=") or arg.startswith("lp=")] |
|---|
| 948 | try : |
|---|
| 949 | rseen = lparg[0].split("=")[-1].split("@")[-1].split("%")[0] |
|---|
| 950 | except : |
|---|
| 951 | # Not found |
|---|
| 952 | self.printInfo(_("Printer hostname undefined, set to 'localhost'"), "warn") |
|---|
| 953 | rseen = "localhost" |
|---|
| 954 | |
|---|
| 955 | spooldir = os.environ.get("SPOOL_DIR", ".") |
|---|
| 956 | df_name = os.environ.get("DATAFILES") |
|---|
| 957 | if not df_name : |
|---|
| 958 | try : |
|---|
| 959 | df_name = [line[10:] for line in os.environ.get("HF", "").split() if line.startswith("datafiles=")][0] |
|---|
| 960 | except IndexError : |
|---|
| 961 | try : |
|---|
| 962 | df_name = [line[8:] for line in os.environ.get("HF", "").split() if line.startswith("df_name=")][0] |
|---|
| 963 | except IndexError : |
|---|
| 964 | try : |
|---|
| 965 | cftransfername = [line[15:] for line in os.environ.get("HF", "").split() if line.startswith("cftransfername=")][0] |
|---|
| 966 | except IndexError : |
|---|
| 967 | try : |
|---|
| 968 | df_name = [line[1:] for line in os.environ.get("CONTROL", "").split() if line.startswith("fdf") or line.startswith("Udf")][0] |
|---|
| 969 | except IndexError : |
|---|
| 970 | raise PyKotaToolError, "Unable to find the file which holds the job's datas. Please file a bug report for PyKota." |
|---|
| 971 | else : |
|---|
| 972 | inputfile = os.path.join(spooldir, df_name) # no need to strip() |
|---|
| 973 | else : |
|---|
| 974 | inputfile = os.path.join(spooldir, "d" + cftransfername[1:]) # no need to strip() |
|---|
| 975 | else : |
|---|
| 976 | inputfile = os.path.join(spooldir, df_name) # no need to strip() |
|---|
| 977 | else : |
|---|
| 978 | inputfile = os.path.join(spooldir, df_name) # no need to strip() |
|---|
| 979 | else : |
|---|
| 980 | inputfile = os.path.join(spooldir, df_name.strip()) |
|---|
| 981 | |
|---|
| 982 | if jseen and Pseen and nseen and rseen : |
|---|
| 983 | options = os.environ.get("HF", "") or os.environ.get("CONTROL", "") |
|---|
| 984 | return ("LPRNG", rseen, Pseen, nseen, jseen, inputfile, Kseen, Jseen, options, None) |
|---|
| 985 | self.printInfo(_("Printing system unknown, args=%s") % " ".join(sys.argv), "warn") |
|---|
| 986 | return (None, None, None, None, None, None, None, None, None, None) # Unknown printing system |
|---|
| 987 | |
|---|
| 988 | def getPrinterUserAndUserPQuota(self) : |
|---|
| 989 | """Returns a tuple (policy, printer, user, and user print quota) on this printer. |
|---|
| 990 | |
|---|
| 991 | "OK" is returned in the policy if both printer, user and user print quota |
|---|
| 992 | exist in the Quota Storage. |
|---|
| 993 | Otherwise, the policy as defined for this printer in pykota.conf is returned. |
|---|
| 994 | |
|---|
| 995 | If policy was set to "EXTERNAL" and one of printer, user, or user print quota |
|---|
| 996 | doesn't exist in the Quota Storage, then an external command is launched, as |
|---|
| 997 | defined in the external policy for this printer in pykota.conf |
|---|
| 998 | This external command can do anything, like automatically adding printers |
|---|
| 999 | or users, for example, and finally extracting printer, user and user print |
|---|
| 1000 | quota from the Quota Storage is tried a second time. |
|---|
| 1001 | |
|---|
| 1002 | "EXTERNALERROR" is returned in case policy was "EXTERNAL" and an error status |
|---|
| 1003 | was returned by the external command. |
|---|
| 1004 | """ |
|---|
| 1005 | for passnumber in range(1, 3) : |
|---|
| 1006 | printer = self.storage.getPrinter(self.printername) |
|---|
| 1007 | user = self.storage.getUser(self.username) |
|---|
| 1008 | userpquota = self.storage.getUserPQuota(user, printer) |
|---|
| 1009 | if printer.Exists and user.Exists and userpquota.Exists : |
|---|
| 1010 | policy = "OK" |
|---|
| 1011 | break |
|---|
| 1012 | (policy, args) = self.config.getPrinterPolicy(self.printername) |
|---|
| 1013 | if policy == "EXTERNAL" : |
|---|
| 1014 | commandline = self.formatCommandLine(args, user, printer) |
|---|
| 1015 | if not printer.Exists : |
|---|
| 1016 | self.printInfo(_("Printer %s not registered in the PyKota system, applying external policy (%s) for printer %s") % (self.printername, commandline, self.printername)) |
|---|
| 1017 | if not user.Exists : |
|---|
| 1018 | self.printInfo(_("User %s not registered in the PyKota system, applying external policy (%s) for printer %s") % (self.username, commandline, self.printername)) |
|---|
| 1019 | if not userpquota.Exists : |
|---|
| 1020 | self.printInfo(_("User %s doesn't have quota on printer %s in the PyKota system, applying external policy (%s) for printer %s") % (self.username, self.printername, commandline, self.printername)) |
|---|
| 1021 | if os.system(commandline) : |
|---|
| 1022 | self.printInfo(_("External policy %s for printer %s produced an error. Job rejected. Please check PyKota's configuration files.") % (commandline, self.printername), "error") |
|---|
| 1023 | policy = "EXTERNALERROR" |
|---|
| 1024 | break |
|---|
| 1025 | else : |
|---|
| 1026 | if not printer.Exists : |
|---|
| 1027 | self.printInfo(_("Printer %s not registered in the PyKota system, applying default policy (%s)") % (self.printername, policy)) |
|---|
| 1028 | if not user.Exists : |
|---|
| 1029 | self.printInfo(_("User %s not registered in the PyKota system, applying default policy (%s) for printer %s") % (self.username, policy, self.printername)) |
|---|
| 1030 | if not userpquota.Exists : |
|---|
| 1031 | self.printInfo(_("User %s doesn't have quota on printer %s in the PyKota system, applying default policy (%s)") % (self.username, self.printername, policy)) |
|---|
| 1032 | break |
|---|
| 1033 | if policy == "EXTERNAL" : |
|---|
| 1034 | if not printer.Exists : |
|---|
| 1035 | self.printInfo(_("Printer %s still not registered in the PyKota system, job will be rejected") % self.printername) |
|---|
| 1036 | if not user.Exists : |
|---|
| 1037 | self.printInfo(_("User %s still not registered in the PyKota system, job will be rejected on printer %s") % (self.username, self.printername)) |
|---|
| 1038 | if not userpquota.Exists : |
|---|
| 1039 | self.printInfo(_("User %s still doesn't have quota on printer %s in the PyKota system, job will be rejected") % (self.username, self.printername)) |
|---|
| 1040 | return (policy, printer, user, userpquota) |
|---|
| 1041 | |
|---|
| 1042 | def mainWork(self) : |
|---|
| 1043 | """Main work is done here.""" |
|---|
| 1044 | (policy, printer, user, userpquota) = self.getPrinterUserAndUserPQuota() |
|---|
| 1045 | # TODO : check for last user's quota in case pykota filter is used with querying |
|---|
| 1046 | if policy == "EXTERNALERROR" : |
|---|
| 1047 | # Policy was 'EXTERNAL' and the external command returned an error code |
|---|
| 1048 | return self.removeJob() |
|---|
| 1049 | elif policy == "EXTERNAL" : |
|---|
| 1050 | # Policy was 'EXTERNAL' and the external command wasn't able |
|---|
| 1051 | # to add either the printer, user or user print quota |
|---|
| 1052 | return self.removeJob() |
|---|
| 1053 | elif policy == "DENY" : |
|---|
| 1054 | # Either printer, user or user print quota doesn't exist, |
|---|
| 1055 | # and the job should be rejected. |
|---|
| 1056 | return self.removeJob() |
|---|
| 1057 | else : |
|---|
| 1058 | if policy not in ("OK", "ALLOW") : |
|---|
| 1059 | self.printInfo(_("Invalid policy %s for printer %s") % (policy, self.printername)) |
|---|
| 1060 | return self.removeJob() |
|---|
| 1061 | else : |
|---|
| 1062 | return self.doWork(policy, printer, user, userpquota) |
|---|
