[695] | 1 | # PyKota |
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[1144] | 2 | # -*- coding: ISO-8859-15 -*- |
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[695] | 3 | # |
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[952] | 4 | # PyKota : Print Quotas for CUPS and LPRng |
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[695] | 5 | # |
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[1257] | 6 | # (c) 2003-2004 Jerome Alet <alet@librelogiciel.com> |
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[873] | 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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[695] | 11 | # |
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[873] | 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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[695] | 20 | # |
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| 21 | # $Id$ |
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| 22 | # |
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[2074] | 23 | # |
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[695] | 24 | |
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| 25 | import os |
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| 26 | import ConfigParser |
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| 27 | |
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| 28 | class PyKotaConfigError(Exception): |
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| 29 | """An exception for PyKota config related stuff.""" |
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| 30 | def __init__(self, message = ""): |
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| 31 | self.message = message |
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| 32 | Exception.__init__(self, message) |
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| 33 | def __repr__(self): |
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| 34 | return self.message |
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| 35 | __str__ = __repr__ |
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| 36 | |
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| 37 | class PyKotaConfig : |
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| 38 | """A class to deal with PyKota's configuration.""" |
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| 39 | def __init__(self, directory) : |
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| 40 | """Reads and checks the configuration file.""" |
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[1785] | 41 | self.isAdmin = 0 |
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| 42 | self.directory = directory |
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[695] | 43 | self.filename = os.path.join(directory, "pykota.conf") |
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[872] | 44 | if not os.path.isfile(self.filename) : |
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| 45 | raise PyKotaConfigError, _("Configuration file %s not found.") % self.filename |
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[695] | 46 | self.config = ConfigParser.ConfigParser() |
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| 47 | self.config.read([self.filename]) |
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[1227] | 48 | |
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| 49 | def isTrue(self, option) : |
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| 50 | """Returns 1 if option is set to true, else 0.""" |
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| 51 | if (option is not None) and (option.upper().strip() in ['Y', 'YES', '1', 'ON', 'T', 'TRUE']) : |
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| 52 | return 1 |
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| 53 | else : |
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| 54 | return 0 |
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[695] | 55 | |
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| 56 | def getPrinterNames(self) : |
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| 57 | """Returns the list of configured printers, i.e. all sections names minus 'global'.""" |
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| 58 | return [pname for pname in self.config.sections() if pname != "global"] |
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| 59 | |
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[802] | 60 | def getGlobalOption(self, option, ignore=0) : |
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| 61 | """Returns an option from the global section, or raises a PyKotaConfigError if ignore is not set, else returns None.""" |
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| 62 | try : |
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| 63 | return self.config.get("global", option, raw=1) |
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| 64 | except (ConfigParser.NoSectionError, ConfigParser.NoOptionError) : |
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| 65 | if ignore : |
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| 66 | return |
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| 67 | else : |
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| 68 | raise PyKotaConfigError, _("Option %s not found in section global of %s") % (option, self.filename) |
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| 69 | |
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[1192] | 70 | def getPrinterOption(self, printername, option) : |
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[802] | 71 | """Returns an option from the printer section, or the global section, or raises a PyKotaConfigError.""" |
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| 72 | globaloption = self.getGlobalOption(option, ignore=1) |
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| 73 | try : |
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[1192] | 74 | return self.config.get(printername, option, raw=1) |
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[802] | 75 | except (ConfigParser.NoSectionError, ConfigParser.NoOptionError) : |
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| 76 | if globaloption is not None : |
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| 77 | return globaloption |
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| 78 | else : |
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[1192] | 79 | raise PyKotaConfigError, _("Option %s not found in section %s of %s") % (option, printername, self.filename) |
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[802] | 80 | |
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[695] | 81 | def getStorageBackend(self) : |
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[800] | 82 | """Returns the storage backend information as a Python mapping.""" |
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| 83 | backendinfo = {} |
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[695] | 84 | for option in [ "storagebackend", "storageserver", \ |
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[1087] | 85 | "storagename", "storageuser", \ |
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[695] | 86 | ] : |
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[804] | 87 | backendinfo[option] = self.getGlobalOption(option) |
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[1087] | 88 | backendinfo["storageuserpw"] = self.getGlobalOption("storageuserpw", ignore=1) # password is optional |
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| 89 | backendinfo["storageadmin"] = None |
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| 90 | backendinfo["storageadminpw"] = None |
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| 91 | adminconf = ConfigParser.ConfigParser() |
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[1785] | 92 | filename = os.path.join(self.directory, "pykotadmin.conf") |
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| 93 | adminconf.read([filename]) |
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[1087] | 94 | if adminconf.sections() : # were we able to read the file ? |
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| 95 | try : |
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| 96 | backendinfo["storageadmin"] = adminconf.get("global", "storageadmin", raw=1) |
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| 97 | except (ConfigParser.NoSectionError, ConfigParser.NoOptionError) : |
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[1785] | 98 | raise PyKotaConfigError, _("Option %s not found in section global of %s") % ("storageadmin", filename) |
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| 99 | else : |
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| 100 | self.isAdmin = 1 # We are a PyKota administrator |
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[1087] | 101 | try : |
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| 102 | backendinfo["storageadminpw"] = adminconf.get("global", "storageadminpw", raw=1) |
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| 103 | except (ConfigParser.NoSectionError, ConfigParser.NoOptionError) : |
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| 104 | pass # Password is optional |
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[800] | 105 | return backendinfo |
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[695] | 106 | |
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[1029] | 107 | def getLDAPInfo(self) : |
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| 108 | """Returns some hints for the LDAP backend.""" |
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| 109 | ldapinfo = {} |
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| 110 | for option in [ "userbase", "userrdn", \ |
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[1041] | 111 | "balancebase", "balancerdn", \ |
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[1029] | 112 | "groupbase", "grouprdn", "groupmembers", \ |
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| 113 | "printerbase", "printerrdn", \ |
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| 114 | "userquotabase", "groupquotabase", \ |
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| 115 | "jobbase", "lastjobbase", \ |
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[1105] | 116 | "newuser", "newgroup", \ |
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[1111] | 117 | "usermail", \ |
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[1029] | 118 | ] : |
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[1105] | 119 | ldapinfo[option] = self.getGlobalOption(option).strip() |
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| 120 | for field in ["newuser", "newgroup"] : |
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| 121 | if ldapinfo[field].lower().startswith('attach(') : |
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| 122 | ldapinfo[field] = ldapinfo[field][7:-1] |
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[1968] | 123 | |
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| 124 | # should we use TLS, by default (if unset) value is NO |
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| 125 | ldapinfo["ldaptls"] = self.isTrue(self.getGlobalOption("ldaptls", ignore=1)) |
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| 126 | ldapinfo["cacert"] = self.getGlobalOption("cacert", ignore=1) |
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| 127 | if ldapinfo["cacert"] : |
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| 128 | ldapinfo["cacert"] = ldapinfo["cacert"].strip() |
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| 129 | if ldapinfo["ldaptls"] : |
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| 130 | if not os.access(ldapinfo["cacert"] or "", os.R_OK) : |
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| 131 | raise PyKotaConfigError, _("Option ldaptls is set, but certificate %s is not readable.") % str(ldapinfo["cacert"]) |
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[1029] | 132 | return ldapinfo |
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| 133 | |
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[695] | 134 | def getLoggingBackend(self) : |
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| 135 | """Returns the logging backend information.""" |
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[802] | 136 | validloggers = [ "stderr", "system" ] |
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[853] | 137 | try : |
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| 138 | logger = self.getGlobalOption("logger").lower() |
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| 139 | except PyKotaConfigError : |
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| 140 | logger = "system" |
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[802] | 141 | if logger not in validloggers : |
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| 142 | raise PyKotaConfigError, _("Option logger only supports values in %s") % str(validloggers) |
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| 143 | return logger |
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[695] | 144 | |
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[1192] | 145 | def getAccounterBackend(self, printername) : |
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[973] | 146 | """Returns the accounter backend to use for a given printer. |
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| 147 | |
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[1475] | 148 | if it is not set, it defaults to 'hardware' which means ask printer |
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[973] | 149 | for its internal lifetime page counter. |
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| 150 | """ |
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[1475] | 151 | validaccounters = [ "hardware", "software" ] |
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[1371] | 152 | fullaccounter = self.getPrinterOption(printername, "accounter").strip() |
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[1483] | 153 | flower = fullaccounter.lower() |
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| 154 | if flower.startswith("software") or flower.startswith("hardware") : |
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[980] | 155 | try : |
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| 156 | (accounter, args) = [x.strip() for x in fullaccounter.split('(', 1)] |
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| 157 | except ValueError : |
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[1483] | 158 | raise PyKotaConfigError, _("Invalid accounter %s for printer %s") % (fullaccounter, printername) |
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[980] | 159 | if args.endswith(')') : |
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[2074] | 160 | args = args[:-1].strip() |
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| 161 | if (accounter == "hardware") and not args : |
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[1483] | 162 | raise PyKotaConfigError, _("Invalid accounter %s for printer %s") % (fullaccounter, printername) |
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[1000] | 163 | return (accounter.lower(), args) |
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[1483] | 164 | else : |
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[1192] | 165 | raise PyKotaConfigError, _("Option accounter in section %s only supports values in %s") % (printername, str(validaccounters)) |
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[973] | 166 | |
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[1371] | 167 | def getPreHook(self, printername) : |
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| 168 | """Returns the prehook command line to launch, or None if unset.""" |
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| 169 | try : |
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| 170 | return self.getPrinterOption(printername, "prehook").strip() |
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| 171 | except PyKotaConfigError : |
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| 172 | return # No command to launch in the pre-hook |
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| 173 | |
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| 174 | def getPostHook(self, printername) : |
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| 175 | """Returns the posthook command line to launch, or None if unset.""" |
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| 176 | try : |
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| 177 | return self.getPrinterOption(printername, "posthook").strip() |
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| 178 | except PyKotaConfigError : |
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| 179 | return # No command to launch in the post-hook |
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| 180 | |
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[1495] | 181 | def getPrinterEnforcement(self, printername) : |
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| 182 | """Returns if quota enforcement should be strict or laxist for the current printer.""" |
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| 183 | validenforcements = [ "STRICT", "LAXIST" ] |
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| 184 | try : |
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| 185 | enforcement = self.getPrinterOption(printername, "enforcement") |
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| 186 | except PyKotaConfigError : |
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| 187 | return "LAXIST" |
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| 188 | else : |
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| 189 | enforcement = enforcement.upper() |
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| 190 | if enforcement not in validenforcements : |
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| 191 | raise PyKotaConfigError, _("Option enforcement in section %s only supports values in %s") % (printername, str(validenforcements)) |
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| 192 | return enforcement |
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| 193 | |
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[1687] | 194 | def getPrinterOnAccounterError(self, printername) : |
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| 195 | """Returns what must be done whenever the accounter fails.""" |
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| 196 | validactions = [ "CONTINUE", "STOP" ] |
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| 197 | try : |
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| 198 | action = self.getPrinterOption(printername, "onaccountererror") |
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| 199 | except PyKotaConfigError : |
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| 200 | return "STOP" |
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| 201 | else : |
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| 202 | action = action.upper() |
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| 203 | if action not in validactions : |
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| 204 | raise PyKotaConfigError, _("Option onaccountererror in section %s only supports values in %s") % (printername, str(validactions)) |
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| 205 | return action |
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| 206 | |
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[1192] | 207 | def getPrinterPolicy(self, printername) : |
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[695] | 208 | """Returns the default policy for the current printer.""" |
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[1152] | 209 | validpolicies = [ "ALLOW", "DENY", "EXTERNAL" ] |
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[853] | 210 | try : |
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[1192] | 211 | fullpolicy = self.getPrinterOption(printername, "policy") |
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[853] | 212 | except PyKotaConfigError : |
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[1152] | 213 | return ("DENY", None) |
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| 214 | else : |
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| 215 | try : |
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| 216 | policy = [x.strip() for x in fullpolicy.split('(', 1)] |
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| 217 | except ValueError : |
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[1192] | 218 | raise PyKotaConfigError, _("Invalid policy %s for printer %s") % (fullpolicy, printername) |
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[1152] | 219 | if len(policy) == 1 : |
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| 220 | policy.append("") |
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| 221 | (policy, args) = policy |
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| 222 | if args.endswith(')') : |
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| 223 | args = args[:-1] |
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| 224 | policy = policy.upper() |
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| 225 | if (policy == "EXTERNAL") and not args : |
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[1192] | 226 | raise PyKotaConfigError, _("Invalid policy %s for printer %s") % (fullpolicy, printername) |
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[1152] | 227 | if policy not in validpolicies : |
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[1192] | 228 | raise PyKotaConfigError, _("Option policy in section %s only supports values in %s") % (printername, str(validpolicies)) |
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[1152] | 229 | return (policy, args) |
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[695] | 230 | |
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[1518] | 231 | def getCrashRecipient(self) : |
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| 232 | """Returns the email address of the software crash messages recipient.""" |
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| 233 | try : |
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| 234 | return self.getGlobalOption("crashrecipient") |
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| 235 | except : |
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| 236 | return |
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| 237 | |
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[695] | 238 | def getSMTPServer(self) : |
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| 239 | """Returns the SMTP server to use to send messages to users.""" |
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[853] | 240 | try : |
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| 241 | return self.getGlobalOption("smtpserver") |
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| 242 | except PyKotaConfigError : |
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| 243 | return "localhost" |
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[695] | 244 | |
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[1353] | 245 | def getMailDomain(self) : |
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| 246 | """Returns the mail domain to use to send messages to users.""" |
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| 247 | try : |
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| 248 | return self.getGlobalOption("maildomain") |
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| 249 | except PyKotaConfigError : |
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| 250 | return |
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| 251 | |
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[1192] | 252 | def getAdminMail(self, printername) : |
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[695] | 253 | """Returns the Email address of the Print Quota Administrator.""" |
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[853] | 254 | try : |
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[1192] | 255 | return self.getPrinterOption(printername, "adminmail") |
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[853] | 256 | except PyKotaConfigError : |
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| 257 | return "root@localhost" |
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[695] | 258 | |
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[1192] | 259 | def getAdmin(self, printername) : |
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[695] | 260 | """Returns the full name of the Print Quota Administrator.""" |
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[853] | 261 | try : |
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[1192] | 262 | return self.getPrinterOption(printername, "admin") |
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[853] | 263 | except PyKotaConfigError : |
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| 264 | return "root" |
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[708] | 265 | |
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[1192] | 266 | def getMailTo(self, printername) : |
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[852] | 267 | """Returns the recipient of email messages.""" |
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[1192] | 268 | validmailtos = [ "EXTERNAL", "NOBODY", "NONE", "NOONE", "BITBUCKET", "DEVNULL", "BOTH", "USER", "ADMIN" ] |
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[853] | 269 | try : |
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[1192] | 270 | fullmailto = self.getPrinterOption(printername, "mailto") |
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[853] | 271 | except PyKotaConfigError : |
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[1192] | 272 | return ("BOTH", None) |
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| 273 | else : |
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| 274 | try : |
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| 275 | mailto = [x.strip() for x in fullmailto.split('(', 1)] |
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| 276 | except ValueError : |
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| 277 | raise PyKotaConfigError, _("Invalid option mailto %s for printer %s") % (fullmailto, printername) |
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| 278 | if len(mailto) == 1 : |
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| 279 | mailto.append("") |
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| 280 | (mailto, args) = mailto |
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| 281 | if args.endswith(')') : |
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| 282 | args = args[:-1] |
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| 283 | mailto = mailto.upper() |
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| 284 | if (mailto == "EXTERNAL") and not args : |
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| 285 | raise PyKotaConfigError, _("Invalid option mailto %s for printer %s") % (fullmailto, printername) |
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| 286 | if mailto not in validmailtos : |
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| 287 | raise PyKotaConfigError, _("Option mailto in section %s only supports values in %s") % (printername, str(validmailtos)) |
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| 288 | return (mailto, args) |
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[852] | 289 | |
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[2054] | 290 | def getMaxDenyBanners(self, printername) : |
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| 291 | """Returns the maximum number of deny banners to be printed for a particular user on a particular printer.""" |
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| 292 | try : |
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| 293 | maxdb = self.getPrinterOption(printername, "maxdenybanners") |
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| 294 | except PyKotaConfigError : |
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| 295 | return 0 # default value is to forbid printing a deny banner. |
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| 296 | try : |
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| 297 | value = int(maxdb.strip()) |
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| 298 | if value < 0 : |
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| 299 | raise ValueError |
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| 300 | except (TypeError, ValueError) : |
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| 301 | raise PyKotaConfigError, _("Invalid maximal deny banners counter %s") % maxdb |
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| 302 | else : |
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| 303 | return value |
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| 304 | |
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[1192] | 305 | def getGraceDelay(self, printername) : |
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[708] | 306 | """Returns the grace delay in days.""" |
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[731] | 307 | try : |
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[1192] | 308 | gd = self.getPrinterOption(printername, "gracedelay") |
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[853] | 309 | except PyKotaConfigError : |
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[1914] | 310 | gd = 7 # default value of 7 days |
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[853] | 311 | try : |
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[731] | 312 | return int(gd) |
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[1077] | 313 | except (TypeError, ValueError) : |
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[773] | 314 | raise PyKotaConfigError, _("Invalid grace delay %s") % gd |
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[1021] | 315 | |
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[1077] | 316 | def getPoorMan(self) : |
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[1646] | 317 | """Returns the poor man's threshold.""" |
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[1077] | 318 | try : |
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| 319 | pm = self.getGlobalOption("poorman") |
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| 320 | except PyKotaConfigError : |
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[1914] | 321 | pm = 1.0 # default value of 1 unit |
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[1077] | 322 | try : |
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| 323 | return float(pm) |
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| 324 | except (TypeError, ValueError) : |
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[1646] | 325 | raise PyKotaConfigError, _("Invalid poor man's threshold %s") % pm |
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[1077] | 326 | |
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| 327 | def getPoorWarn(self) : |
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| 328 | """Returns the poor man's warning message.""" |
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| 329 | try : |
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| 330 | return self.getGlobalOption("poorwarn") |
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| 331 | except PyKotaConfigError : |
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| 332 | return _("Your Print Quota account balance is Low.\nSoon you'll not be allowed to print anymore.\nPlease contact the Print Quota Administrator to solve the problem.") |
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| 333 | |
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[1192] | 334 | def getHardWarn(self, printername) : |
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[1077] | 335 | """Returns the hard limit error message.""" |
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| 336 | try : |
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[1192] | 337 | return self.getPrinterOption(printername, "hardwarn") |
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[1077] | 338 | except PyKotaConfigError : |
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[1192] | 339 | return _("You are not allowed to print anymore because\nyour Print Quota is exceeded on printer %s.") % printername |
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[1077] | 340 | |
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[1192] | 341 | def getSoftWarn(self, printername) : |
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[1077] | 342 | """Returns the soft limit error message.""" |
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| 343 | try : |
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[1192] | 344 | return self.getPrinterOption(printername, "softwarn") |
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[1077] | 345 | except PyKotaConfigError : |
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[1192] | 346 | return _("You will soon be forbidden to print anymore because\nyour Print Quota is almost reached on printer %s.") % printername |
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[1077] | 347 | |
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[1875] | 348 | def getPrivacy(self) : |
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| 349 | """Returns 1 if privacy is activated, else 0.""" |
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| 350 | return self.isTrue(self.getGlobalOption("privacy", ignore=1)) |
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| 351 | |
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[1021] | 352 | def getDebug(self) : |
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| 353 | """Returns 1 if debugging is activated, else 0.""" |
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[1227] | 354 | return self.isTrue(self.getGlobalOption("debug", ignore=1)) |
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[1130] | 355 | |
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| 356 | def getCaching(self) : |
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| 357 | """Returns 1 if database caching is enabled, else 0.""" |
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[1227] | 358 | return self.isTrue(self.getGlobalOption("storagecaching", ignore=1)) |
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[1148] | 359 | |
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[1356] | 360 | def getLDAPCache(self) : |
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| 361 | """Returns 1 if low-level LDAP caching is enabled, else 0.""" |
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| 362 | return self.isTrue(self.getGlobalOption("ldapcache", ignore=1)) |
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| 363 | |
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[1148] | 364 | def getDisableHistory(self) : |
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| 365 | """Returns 1 if we want to disable history, else 0.""" |
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[1227] | 366 | return self.isTrue(self.getGlobalOption("disablehistory", ignore=1)) |
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| 367 | |
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| 368 | def getUserNameToLower(self) : |
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| 369 | """Returns 1 if we want to convert usernames to lowercase when printing, else 0.""" |
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| 370 | return self.isTrue(self.getGlobalOption("utolower", ignore=1)) |
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[1757] | 371 | |
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[1956] | 372 | def getRejectUnknown(self) : |
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| 373 | """Returns 1 if we want to reject the creation of unknown users or groups, else 0.""" |
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| 374 | return self.isTrue(self.getGlobalOption("reject_unknown", ignore=1)) |
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| 375 | |
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[2066] | 376 | def getDenyDuplicates(self, printername) : |
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| 377 | """Returns 1 if we want to deny duplicate jobs, else 0.""" |
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| 378 | try : |
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| 379 | return self.isTrue(self.getPrinterOption(printername, "denyduplicates")) |
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| 380 | except PyKotaConfigError : |
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| 381 | return 0 |
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| 382 | |
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[1757] | 383 | def getWinbindSeparator(self) : |
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| 384 | """Returns the winbind separator's value if it is set, else None.""" |
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| 385 | return self.getGlobalOption("winbind_separator", ignore=1) |
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[1914] | 386 | |
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| 387 | def getAccountBanner(self, printername) : |
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| 388 | """Returns which banner(s) to account for: NONE, BOTH, STARTING, ENDING.""" |
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| 389 | validvalues = [ "NONE", "BOTH", "STARTING", "ENDING" ] |
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| 390 | try : |
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| 391 | value = self.getPrinterOption(printername, "accountbanner") |
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| 392 | except PyKotaConfigError : |
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| 393 | return "BOTH" # Default value of BOTH |
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| 394 | else : |
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[1916] | 395 | value = value.strip().upper() |
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[1914] | 396 | if value not in validvalues : |
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[1916] | 397 | raise PyKotaConfigError, _("Option accountbanner in section %s only supports values in %s") % (printername, str(validvalues)) |
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[1914] | 398 | return value |
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| 399 | |
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| 400 | def getStartingBanner(self, printername) : |
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| 401 | """Returns the startingbanner value if set, else None.""" |
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| 402 | try : |
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[1916] | 403 | return self.getPrinterOption(printername, "startingbanner").strip() |
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[1914] | 404 | except PyKotaConfigError : |
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| 405 | return None |
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| 406 | |
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| 407 | def getEndingBanner(self, printername) : |
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| 408 | """Returns the endingbanner value if set, else None.""" |
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| 409 | try : |
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[1916] | 410 | return self.getPrinterOption(printername, "endingbanner").strip() |
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[1914] | 411 | except PyKotaConfigError : |
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| 412 | return None |
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[2062] | 413 | |
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| 414 | def getTrustJobSize(self, printername) : |
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| 415 | """Returns the normalized value of the trustjobsize's directive.""" |
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| 416 | try : |
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| 417 | value = self.getPrinterOption(printername, "trustjobsize").strip().upper() |
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| 418 | except PyKotaConfigError : |
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| 419 | return (None, "YES") |
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| 420 | else : |
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| 421 | if value == "YES" : |
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| 422 | return (None, "YES") |
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| 423 | try : |
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| 424 | (limit, replacement) = [p.strip() for p in value.split(">")[1].split(":")] |
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| 425 | limit = int(limit) |
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| 426 | try : |
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| 427 | replacement = int(replacement) |
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| 428 | except ValueError : |
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| 429 | if replacement != "PRECOMPUTED" : |
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| 430 | raise |
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| 431 | if limit < 0 : |
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| 432 | raise ValueError |
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| 433 | if (replacement != "PRECOMPUTED") and (replacement < 0) : |
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| 434 | raise ValueError |
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| 435 | except (IndexError, ValueError, TypeError) : |
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| 436 | raise PyKotaConfigError, _("Option trustjobsize for printer %s is incorrect") % printername |
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| 437 | return (limit, replacement) |
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