1 | #! /usr/bin/env python |
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2 | |
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3 | # PyKota - Print Quotas for CUPS and LPRng |
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4 | # |
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5 | # (c) 2003 Jerome Alet <alet@librelogiciel.com> |
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6 | # This program is free software; you can redistribute it and/or modify |
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7 | # it under the terms of the GNU General Public License as published by |
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8 | # the Free Software Foundation; either version 2 of the License, or |
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9 | # (at your option) any later version. |
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10 | # |
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11 | # This program is distributed in the hope that it will be useful, |
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12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | # GNU General Public License for more details. |
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15 | # |
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16 | # You should have received a copy of the GNU General Public License |
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17 | # along with this program; if not, write to the Free Software |
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18 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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19 | # |
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20 | # $Id$ |
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21 | # |
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22 | # $Log$ |
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23 | # Revision 1.39 2003/04/29 18:37:54 jalet |
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24 | # Pluggable accounting methods (actually doesn't support external scripts) |
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25 | # |
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26 | # Revision 1.38 2003/04/24 11:53:48 jalet |
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27 | # Default policy for unknown users/groups is to DENY printing instead |
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28 | # of the previous default to ALLOW printing. This is to solve an accuracy |
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29 | # problem. If you set the policy to ALLOW, jobs printed by in nexistant user |
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30 | # (from PyKota's POV) will be charged to the next user who prints on the |
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31 | # same printer. |
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32 | # |
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33 | # Revision 1.37 2003/04/24 08:08:27 jalet |
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34 | # Debug message forgotten |
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35 | # |
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36 | # Revision 1.36 2003/04/24 07:59:40 jalet |
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37 | # LPRng support now works ! |
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38 | # |
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39 | # Revision 1.35 2003/04/23 22:13:57 jalet |
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40 | # Preliminary support for LPRng added BUT STILL UNTESTED. |
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41 | # |
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42 | # Revision 1.34 2003/04/17 09:26:21 jalet |
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43 | # repykota now reports account balances too. |
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44 | # |
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45 | # Revision 1.33 2003/04/16 12:35:49 jalet |
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46 | # Groups quota work now ! |
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47 | # |
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48 | # Revision 1.32 2003/04/16 08:53:14 jalet |
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49 | # Printing can now be limited either by user's account balance or by |
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50 | # page quota (the default). Quota report doesn't include account balance |
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51 | # yet, though. |
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52 | # |
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53 | # Revision 1.31 2003/04/15 11:30:57 jalet |
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54 | # More work done on money print charging. |
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55 | # Minor bugs corrected. |
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56 | # All tools now access to the storage as priviledged users, repykota excepted. |
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57 | # |
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58 | # Revision 1.30 2003/04/10 21:47:20 jalet |
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59 | # Job history added. Upgrade script neutralized for now ! |
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60 | # |
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61 | # Revision 1.29 2003/03/29 13:45:27 jalet |
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62 | # GPL paragraphs were incorrectly (from memory) copied into the sources. |
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63 | # Two README files were added. |
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64 | # Upgrade script for PostgreSQL pre 1.01 schema was added. |
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65 | # |
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66 | # Revision 1.28 2003/03/29 13:08:28 jalet |
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67 | # Configuration is now expected to be found in /etc/pykota.conf instead of |
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68 | # in /etc/cups/pykota.conf |
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69 | # Installation script can move old config files to the new location if needed. |
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70 | # Better error handling if configuration file is absent. |
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71 | # |
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72 | # Revision 1.27 2003/03/15 23:01:28 jalet |
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73 | # New mailto option in configuration file added. |
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74 | # No time to test this tonight (although it should work). |
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75 | # |
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76 | # Revision 1.26 2003/03/09 23:58:16 jalet |
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77 | # Comment |
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78 | # |
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79 | # Revision 1.25 2003/03/07 22:56:14 jalet |
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80 | # 0.99 is out with some bug fixes. |
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81 | # |
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82 | # Revision 1.24 2003/02/27 23:48:41 jalet |
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83 | # Correctly maps PyKota's log levels to syslog log levels |
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84 | # |
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85 | # Revision 1.23 2003/02/27 22:55:20 jalet |
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86 | # WARN log priority doesn't exist. |
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87 | # |
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88 | # Revision 1.22 2003/02/27 09:09:20 jalet |
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89 | # Added a method to match strings against wildcard patterns |
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90 | # |
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91 | # Revision 1.21 2003/02/17 23:01:56 jalet |
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92 | # Typos |
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93 | # |
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94 | # Revision 1.20 2003/02/17 22:55:01 jalet |
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95 | # More options can now be set per printer or globally : |
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96 | # |
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97 | # admin |
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98 | # adminmail |
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99 | # gracedelay |
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100 | # requester |
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101 | # |
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102 | # the printer option has priority when both are defined. |
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103 | # |
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104 | # Revision 1.19 2003/02/10 11:28:45 jalet |
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105 | # Localization |
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106 | # |
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107 | # Revision 1.18 2003/02/10 01:02:17 jalet |
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108 | # External requester is about to work, but I must sleep |
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109 | # |
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110 | # Revision 1.17 2003/02/09 13:05:43 jalet |
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111 | # Internationalization continues... |
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112 | # |
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113 | # Revision 1.16 2003/02/09 12:56:53 jalet |
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114 | # Internationalization begins... |
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115 | # |
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116 | # Revision 1.15 2003/02/08 22:09:52 jalet |
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117 | # Name check method moved here |
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118 | # |
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119 | # Revision 1.14 2003/02/07 10:42:45 jalet |
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120 | # Indentation problem |
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121 | # |
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122 | # Revision 1.13 2003/02/07 08:34:16 jalet |
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123 | # Test wrt date limit was wrong |
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124 | # |
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125 | # Revision 1.12 2003/02/06 23:20:02 jalet |
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126 | # warnpykota doesn't need any user/group name argument, mimicing the |
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127 | # warnquota disk quota tool. |
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128 | # |
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129 | # Revision 1.11 2003/02/06 22:54:33 jalet |
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130 | # warnpykota should be ok |
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131 | # |
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132 | # Revision 1.10 2003/02/06 15:03:11 jalet |
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133 | # added a method to set the limit date |
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134 | # |
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135 | # Revision 1.9 2003/02/06 10:39:23 jalet |
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136 | # Preliminary edpykota work. |
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137 | # |
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138 | # Revision 1.8 2003/02/06 09:19:02 jalet |
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139 | # More robust behavior (hopefully) when the user or printer is not managed |
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140 | # correctly by the Quota System : e.g. cupsFilter added in ppd file, but |
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141 | # printer and/or user not 'yet?' in storage. |
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142 | # |
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143 | # Revision 1.7 2003/02/06 00:00:45 jalet |
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144 | # Now includes the printer name in email messages |
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145 | # |
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146 | # Revision 1.6 2003/02/05 23:55:02 jalet |
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147 | # Cleaner email messages |
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148 | # |
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149 | # Revision 1.5 2003/02/05 23:45:09 jalet |
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150 | # Better DateTime manipulation wrt grace delay |
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151 | # |
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152 | # Revision 1.4 2003/02/05 23:26:22 jalet |
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153 | # Incorrect handling of grace delay |
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154 | # |
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155 | # Revision 1.3 2003/02/05 22:16:20 jalet |
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156 | # DEVICE_URI is undefined outside of CUPS, i.e. for normal command line tools |
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157 | # |
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158 | # Revision 1.2 2003/02/05 22:10:29 jalet |
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159 | # Typos |
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160 | # |
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161 | # Revision 1.1 2003/02/05 21:28:17 jalet |
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162 | # Initial import into CVS |
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163 | # |
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164 | # |
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165 | # |
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166 | |
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167 | import sys |
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168 | import os |
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169 | import fnmatch |
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170 | import getopt |
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171 | import smtplib |
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172 | import gettext |
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173 | import locale |
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174 | |
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175 | from mx import DateTime |
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176 | |
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177 | from pykota import version, config, storage, logger |
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178 | |
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179 | class PyKotaToolError(Exception): |
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180 | """An exception for PyKota config related stuff.""" |
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181 | def __init__(self, message = ""): |
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182 | self.message = message |
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183 | Exception.__init__(self, message) |
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184 | def __repr__(self): |
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185 | return self.message |
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186 | __str__ = __repr__ |
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187 | |
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188 | class PyKotaTool : |
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189 | """Base class for all PyKota command line tools.""" |
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190 | def __init__(self, asadmin=1, doc="PyKota %s (c) 2003 %s" % (version.__version__, version.__author__)) : |
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191 | """Initializes the command line tool.""" |
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192 | # locale stuff |
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193 | try : |
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194 | locale.setlocale(locale.LC_ALL, "") |
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195 | gettext.install("pykota") |
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196 | except (locale.Error, IOError) : |
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197 | gettext.NullTranslations().install() |
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198 | |
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199 | # pykota specific stuff |
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200 | self.documentation = doc |
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201 | self.config = config.PyKotaConfig("/etc") |
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202 | self.logger = logger.openLogger(self.config) |
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203 | self.storage = storage.openConnection(self.config, asadmin=asadmin) |
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204 | self.smtpserver = self.config.getSMTPServer() |
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205 | |
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206 | def display_version_and_quit(self) : |
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207 | """Displays version number, then exists successfully.""" |
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208 | print version.__version__ |
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209 | sys.exit(0) |
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210 | |
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211 | def display_usage_and_quit(self) : |
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212 | """Displays command line usage, then exists successfully.""" |
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213 | print self.documentation |
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214 | sys.exit(0) |
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215 | |
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216 | def parseCommandline(self, argv, short, long, allownothing=0) : |
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217 | """Parses the command line, controlling options.""" |
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218 | # split options in two lists: those which need an argument, those which don't need any |
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219 | withoutarg = [] |
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220 | witharg = [] |
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221 | lgs = len(short) |
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222 | i = 0 |
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223 | while i < lgs : |
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224 | ii = i + 1 |
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225 | if (ii < lgs) and (short[ii] == ':') : |
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226 | # needs an argument |
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227 | witharg.append(short[i]) |
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228 | ii = ii + 1 # skip the ':' |
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229 | else : |
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230 | # doesn't need an argument |
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231 | withoutarg.append(short[i]) |
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232 | i = ii |
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233 | |
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234 | for option in long : |
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235 | if option[-1] == '=' : |
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236 | # needs an argument |
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237 | witharg.append(option[:-1]) |
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238 | else : |
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239 | # doesn't need an argument |
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240 | withoutarg.append(option) |
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241 | |
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242 | # we begin with all possible options unset |
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243 | parsed = {} |
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244 | for option in withoutarg + witharg : |
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245 | parsed[option] = None |
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246 | |
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247 | # then we parse the command line |
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248 | args = [] # to not break if something unexpected happened |
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249 | try : |
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250 | options, args = getopt.getopt(argv, short, long) |
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251 | if options : |
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252 | for (o, v) in options : |
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253 | # we skip the '-' chars |
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254 | lgo = len(o) |
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255 | i = 0 |
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256 | while (i < lgo) and (o[i] == '-') : |
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257 | i = i + 1 |
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258 | o = o[i:] |
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259 | if o in witharg : |
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260 | # needs an argument : set it |
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261 | parsed[o] = v |
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262 | elif o in withoutarg : |
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263 | # doesn't need an argument : boolean |
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264 | parsed[o] = 1 |
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265 | else : |
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266 | # should never occur |
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267 | raise PyKotaToolError, "Unexpected problem when parsing command line" |
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268 | 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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269 | self.display_usage_and_quit() |
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270 | except getopt.error, msg : |
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271 | sys.stderr.write("%s\n" % msg) |
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272 | sys.stderr.flush() |
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273 | self.display_usage_and_quit() |
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274 | return (parsed, args) |
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275 | |
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276 | def isValidName(self, name) : |
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277 | """Checks if a user or printer name is valid.""" |
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278 | # unfortunately Python 2.1 string modules doesn't define ascii_letters... |
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279 | asciiletters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' |
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280 | digits = '0123456789' |
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281 | if name[0] in asciiletters : |
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282 | validchars = asciiletters + digits + "-_" |
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283 | for c in name[1:] : |
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284 | if c not in validchars : |
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285 | return 0 |
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286 | return 1 |
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287 | return 0 |
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288 | |
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289 | def matchString(self, s, patterns) : |
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290 | """Returns 1 if the string s matches one of the patterns, else 0.""" |
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291 | for pattern in patterns : |
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292 | if fnmatch.fnmatchcase(s, pattern) : |
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293 | return 1 |
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294 | return 0 |
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295 | |
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296 | def sendMessage(self, adminmail, touser, fullmessage) : |
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297 | """Sends an email message containing headers to some user.""" |
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298 | if "@" not in touser : |
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299 | touser = "%s@%s" % (touser, self.smtpserver) |
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300 | server = smtplib.SMTP(self.smtpserver) |
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301 | server.sendmail(adminmail, [touser], fullmessage) |
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302 | server.quit() |
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303 | |
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304 | def sendMessageToUser(self, admin, adminmail, username, subject, message) : |
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305 | """Sends an email message to a user.""" |
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306 | message += _("\n\nPlease contact your system administrator :\n\n\t%s - <%s>\n") % (admin, adminmail) |
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307 | self.sendMessage(adminmail, username, "Subject: %s\n\n%s" % (subject, message)) |
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308 | |
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309 | def sendMessageToAdmin(self, adminmail, subject, message) : |
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310 | """Sends an email message to the Print Quota administrator.""" |
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311 | self.sendMessage(adminmail, adminmail, "Subject: %s\n\n%s" % (subject, message)) |
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312 | |
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313 | def checkGroupPQuota(self, groupname, printername) : |
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314 | """Checks the group quota on a printer and deny or accept the job.""" |
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315 | printerid = self.storage.getPrinterId(printername) |
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316 | policy = self.config.getPrinterPolicy(printername) |
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317 | groupid = self.storage.getGroupId(groupname) |
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318 | limitby = self.storage.getGroupLimitBy(groupid) |
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319 | if limitby == "balance" : |
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320 | balance = self.storage.getGroupBalance(groupid) |
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321 | if balance is None : |
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322 | if policy == "ALLOW" : |
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323 | action = "POLICY_ALLOW" |
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324 | else : |
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325 | action = "POLICY_DENY" |
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326 | self.logger.log_message(_("Unable to find group %s's account balance, applying default policy (%s) for printer %s") % (groupname, action, printername)) |
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327 | else : |
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328 | # TODO : there's no warning (no account balance soft limit) |
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329 | (balance, lifetimepaid) = balance |
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330 | if balance <= 0.0 : |
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331 | action = "DENY" |
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332 | else : |
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333 | action = "ALLOW" |
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334 | else : |
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335 | quota = self.storage.getGroupPQuota(groupid, printerid) |
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336 | if quota is None : |
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337 | # Unknown group or printer or combination |
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338 | if policy == "ALLOW" : |
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339 | action = "POLICY_ALLOW" |
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340 | else : |
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341 | action = "POLICY_DENY" |
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342 | self.logger.log_message(_("Unable to match group %s on printer %s, applying default policy (%s)") % (groupname, printername, action)) |
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343 | else : |
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344 | pagecounter = quota["pagecounter"] |
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345 | softlimit = quota["softlimit"] |
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346 | hardlimit = quota["hardlimit"] |
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347 | datelimit = quota["datelimit"] |
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348 | if softlimit is not None : |
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349 | if pagecounter < softlimit : |
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350 | action = "ALLOW" |
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351 | else : |
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352 | if hardlimit is None : |
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353 | # only a soft limit, this is equivalent to having only a hard limit |
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354 | action = "DENY" |
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355 | else : |
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356 | if softlimit <= pagecounter < hardlimit : |
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357 | now = DateTime.now() |
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358 | if datelimit is not None : |
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359 | datelimit = DateTime.ISO.ParseDateTime(datelimit) |
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360 | else : |
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361 | datelimit = now + self.config.getGraceDelay(printername) |
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362 | self.storage.setGroupDateLimit(groupid, printerid, datelimit) |
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363 | if now < datelimit : |
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364 | action = "WARN" |
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365 | else : |
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366 | action = "DENY" |
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367 | else : |
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368 | action = "DENY" |
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369 | else : |
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370 | if hardlimit is not None : |
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371 | # no soft limit, only a hard one. |
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372 | if pagecounter < hardlimit : |
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373 | action = "ALLOW" |
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374 | else : |
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375 | action = "DENY" |
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376 | else : |
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377 | # Both are unset, no quota, i.e. accounting only |
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378 | action = "ALLOW" |
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379 | return action |
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380 | |
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381 | def checkUserPQuota(self, username, printername) : |
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382 | """Checks the user quota on a printer and deny or accept the job.""" |
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383 | # first we check any group the user is a member of |
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384 | userid = self.storage.getUserId(username) |
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385 | for groupname in self.storage.getUserGroupsNames(userid) : |
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386 | action = self.checkGroupPQuota(groupname, printername) |
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387 | if action in ("DENY", "POLICY_DENY") : |
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388 | return action |
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389 | |
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390 | # then we check the user's own quota |
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391 | printerid = self.storage.getPrinterId(printername) |
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392 | policy = self.config.getPrinterPolicy(printername) |
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393 | limitby = self.storage.getUserLimitBy(userid) |
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394 | if limitby == "balance" : |
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395 | balance = self.storage.getUserBalance(userid) |
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396 | if balance is None : |
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397 | if policy == "ALLOW" : |
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398 | action = "POLICY_ALLOW" |
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399 | else : |
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400 | action = "POLICY_DENY" |
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401 | self.logger.log_message(_("Unable to find user %s's account balance, applying default policy (%s) for printer %s") % (username, action, printername)) |
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402 | else : |
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403 | # TODO : there's no warning (no account balance soft limit) |
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404 | (balance, lifetimepaid) = balance |
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405 | if balance <= 0.0 : |
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406 | action = "DENY" |
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407 | else : |
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408 | action = "ALLOW" |
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409 | else : |
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410 | quota = self.storage.getUserPQuota(userid, printerid) |
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411 | if quota is None : |
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412 | # Unknown user or printer or combination |
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413 | if policy == "ALLOW" : |
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414 | action = "POLICY_ALLOW" |
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415 | else : |
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416 | action = "POLICY_DENY" |
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417 | self.logger.log_message(_("Unable to match user %s on printer %s, applying default policy (%s)") % (username, printername, action)) |
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418 | else : |
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419 | pagecounter = quota["pagecounter"] |
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420 | softlimit = quota["softlimit"] |
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421 | hardlimit = quota["hardlimit"] |
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422 | datelimit = quota["datelimit"] |
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423 | if softlimit is not None : |
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424 | if pagecounter < softlimit : |
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425 | action = "ALLOW" |
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426 | else : |
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427 | if hardlimit is None : |
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428 | # only a soft limit, this is equivalent to having only a hard limit |
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429 | action = "DENY" |
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430 | else : |
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431 | if softlimit <= pagecounter < hardlimit : |
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432 | now = DateTime.now() |
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433 | if datelimit is not None : |
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434 | datelimit = DateTime.ISO.ParseDateTime(datelimit) |
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435 | else : |
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436 | datelimit = now + self.config.getGraceDelay(printername) |
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437 | self.storage.setUserDateLimit(userid, printerid, datelimit) |
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438 | if now < datelimit : |
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439 | action = "WARN" |
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440 | else : |
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441 | action = "DENY" |
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442 | else : |
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443 | action = "DENY" |
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444 | else : |
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445 | if hardlimit is not None : |
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446 | # no soft limit, only a hard one. |
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447 | if pagecounter < hardlimit : |
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448 | action = "ALLOW" |
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449 | else : |
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450 | action = "DENY" |
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451 | else : |
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452 | # Both are unset, no quota, i.e. accounting only |
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453 | action = "ALLOW" |
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454 | return action |
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455 | |
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456 | def warnGroupPQuota(self, groupname, printername) : |
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457 | """Checks a group quota and send messages if quota is exceeded on current printer.""" |
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458 | admin = self.config.getAdmin(printername) |
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459 | adminmail = self.config.getAdminMail(printername) |
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460 | mailto = self.config.getMailTo(printername) |
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461 | action = self.checkGroupPQuota(groupname, printername) |
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462 | groupmembers = self.storage.getGroupMembersNames(groupname) |
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463 | if action.startswith("POLICY_") : |
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464 | action = action[7:] |
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465 | if action == "DENY" : |
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466 | adminmessage = _("Print Quota exceeded for group %s on printer %s") % (groupname, printername) |
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467 | self.logger.log_message(adminmessage) |
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468 | if mailto in [ "BOTH", "ADMIN" ] : |
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469 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
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470 | for username in groupmembers : |
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471 | if mailto in [ "BOTH", "USER" ] : |
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472 | self.sendMessageToUser(admin, adminmail, username, _("Print Quota Exceeded"), _("You are not allowed to print anymore because\nyour group Print Quota is exceeded on printer %s.") % printername) |
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473 | elif action == "WARN" : |
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474 | adminmessage = _("Print Quota soft limit exceeded for group %s on printer %s") % (groupname, printername) |
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475 | self.logger.log_message(adminmessage) |
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476 | if mailto in [ "BOTH", "ADMIN" ] : |
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477 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
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478 | for username in groupmembers : |
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479 | if mailto in [ "BOTH", "USER" ] : |
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480 | self.sendMessageToUser(admin, adminmail, username, _("Print Quota Exceeded"), _("You will soon be forbidden to print anymore because\nyour group Print Quota is almost reached on printer %s.") % printername) |
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481 | return action |
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482 | |
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483 | def warnUserPQuota(self, username, printername) : |
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484 | """Checks a user quota and send him a message if quota is exceeded on current printer.""" |
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485 | admin = self.config.getAdmin(printername) |
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486 | adminmail = self.config.getAdminMail(printername) |
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487 | mailto = self.config.getMailTo(printername) |
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488 | action = self.checkUserPQuota(username, printername) |
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489 | if action.startswith("POLICY_") : |
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490 | action = action[7:] |
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491 | if action == "DENY" : |
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492 | adminmessage = _("Print Quota exceeded for user %s on printer %s") % (username, printername) |
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493 | self.logger.log_message(adminmessage) |
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494 | if mailto in [ "BOTH", "USER" ] : |
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495 | self.sendMessageToUser(admin, adminmail, username, _("Print Quota Exceeded"), _("You are not allowed to print anymore because\nyour Print Quota is exceeded on printer %s.") % printername) |
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496 | if mailto in [ "BOTH", "ADMIN" ] : |
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497 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
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498 | elif action == "WARN" : |
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499 | adminmessage = _("Print Quota soft limit exceeded for user %s on printer %s") % (username, printername) |
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500 | self.logger.log_message(adminmessage) |
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501 | if mailto in [ "BOTH", "USER" ] : |
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502 | self.sendMessageToUser(admin, adminmail, username, _("Print Quota Exceeded"), _("You will soon be forbidden to print anymore because\nyour Print Quota is almost reached on printer %s.") % printername) |
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503 | if mailto in [ "BOTH", "ADMIN" ] : |
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504 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
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505 | return action |
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506 | |
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