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 1.50 2003/10/02 20:23:18 jalet |
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24 | # Storage caching mechanism added. |
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25 | # |
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26 | # Revision 1.49 2003/07/29 20:55:17 jalet |
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27 | # 1.14 is out ! |
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28 | # |
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29 | # Revision 1.48 2003/07/21 23:01:56 jalet |
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30 | # Modified some messages aout soft limit |
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31 | # |
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32 | # Revision 1.47 2003/07/16 21:53:08 jalet |
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33 | # Really big modifications wrt new configuration file's location and content. |
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34 | # |
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35 | # Revision 1.46 2003/07/09 20:17:07 jalet |
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36 | # Email field added to PostgreSQL schema |
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37 | # |
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38 | # Revision 1.45 2003/07/08 19:43:51 jalet |
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39 | # Configurable warning messages. |
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40 | # Poor man's treshold value added. |
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41 | # |
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42 | # Revision 1.44 2003/07/07 11:49:24 jalet |
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43 | # Lots of small fixes with the help of PyChecker |
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44 | # |
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45 | # Revision 1.43 2003/07/04 09:06:32 jalet |
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46 | # Small bug fix wrt undefined "LimitBy" field. |
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47 | # |
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48 | # Revision 1.42 2003/06/30 12:46:15 jalet |
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49 | # Extracted reporting code. |
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50 | # |
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51 | # Revision 1.41 2003/06/25 14:10:01 jalet |
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52 | # Hey, it may work (edpykota --reset excepted) ! |
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53 | # |
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54 | # Revision 1.40 2003/06/10 16:37:54 jalet |
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55 | # Deletion of the second user which is not needed anymore. |
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56 | # Added a debug configuration field in /etc/pykota.conf |
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57 | # All queries can now be sent to the logger in debug mode, this will |
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58 | # greatly help improve performance when time for this will come. |
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59 | # |
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60 | # Revision 1.39 2003/04/29 18:37:54 jalet |
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61 | # Pluggable accounting methods (actually doesn't support external scripts) |
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62 | # |
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63 | # Revision 1.38 2003/04/24 11:53:48 jalet |
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64 | # Default policy for unknown users/groups is to DENY printing instead |
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65 | # of the previous default to ALLOW printing. This is to solve an accuracy |
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66 | # problem. If you set the policy to ALLOW, jobs printed by in nexistant user |
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67 | # (from PyKota's POV) will be charged to the next user who prints on the |
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68 | # same printer. |
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69 | # |
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70 | # Revision 1.37 2003/04/24 08:08:27 jalet |
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71 | # Debug message forgotten |
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72 | # |
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73 | # Revision 1.36 2003/04/24 07:59:40 jalet |
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74 | # LPRng support now works ! |
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75 | # |
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76 | # Revision 1.35 2003/04/23 22:13:57 jalet |
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77 | # Preliminary support for LPRng added BUT STILL UNTESTED. |
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78 | # |
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79 | # Revision 1.34 2003/04/17 09:26:21 jalet |
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80 | # repykota now reports account balances too. |
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81 | # |
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82 | # Revision 1.33 2003/04/16 12:35:49 jalet |
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83 | # Groups quota work now ! |
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84 | # |
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85 | # Revision 1.32 2003/04/16 08:53:14 jalet |
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86 | # Printing can now be limited either by user's account balance or by |
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87 | # page quota (the default). Quota report doesn't include account balance |
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88 | # yet, though. |
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89 | # |
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90 | # Revision 1.31 2003/04/15 11:30:57 jalet |
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91 | # More work done on money print charging. |
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92 | # Minor bugs corrected. |
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93 | # All tools now access to the storage as priviledged users, repykota excepted. |
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94 | # |
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95 | # Revision 1.30 2003/04/10 21:47:20 jalet |
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96 | # Job history added. Upgrade script neutralized for now ! |
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97 | # |
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98 | # Revision 1.29 2003/03/29 13:45:27 jalet |
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99 | # GPL paragraphs were incorrectly (from memory) copied into the sources. |
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100 | # Two README files were added. |
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101 | # Upgrade script for PostgreSQL pre 1.01 schema was added. |
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102 | # |
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103 | # Revision 1.28 2003/03/29 13:08:28 jalet |
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104 | # Configuration is now expected to be found in /etc/pykota.conf instead of |
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105 | # in /etc/cups/pykota.conf |
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106 | # Installation script can move old config files to the new location if needed. |
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107 | # Better error handling if configuration file is absent. |
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108 | # |
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109 | # Revision 1.27 2003/03/15 23:01:28 jalet |
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110 | # New mailto option in configuration file added. |
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111 | # No time to test this tonight (although it should work). |
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112 | # |
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113 | # Revision 1.26 2003/03/09 23:58:16 jalet |
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114 | # Comment |
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115 | # |
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116 | # Revision 1.25 2003/03/07 22:56:14 jalet |
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117 | # 0.99 is out with some bug fixes. |
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118 | # |
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119 | # Revision 1.24 2003/02/27 23:48:41 jalet |
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120 | # Correctly maps PyKota's log levels to syslog log levels |
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121 | # |
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122 | # Revision 1.23 2003/02/27 22:55:20 jalet |
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123 | # WARN log priority doesn't exist. |
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124 | # |
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125 | # Revision 1.22 2003/02/27 09:09:20 jalet |
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126 | # Added a method to match strings against wildcard patterns |
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127 | # |
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128 | # Revision 1.21 2003/02/17 23:01:56 jalet |
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129 | # Typos |
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130 | # |
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131 | # Revision 1.20 2003/02/17 22:55:01 jalet |
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132 | # More options can now be set per printer or globally : |
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133 | # |
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134 | # admin |
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135 | # adminmail |
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136 | # gracedelay |
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137 | # requester |
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138 | # |
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139 | # the printer option has priority when both are defined. |
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140 | # |
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141 | # Revision 1.19 2003/02/10 11:28:45 jalet |
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142 | # Localization |
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143 | # |
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144 | # Revision 1.18 2003/02/10 01:02:17 jalet |
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145 | # External requester is about to work, but I must sleep |
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146 | # |
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147 | # Revision 1.17 2003/02/09 13:05:43 jalet |
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148 | # Internationalization continues... |
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149 | # |
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150 | # Revision 1.16 2003/02/09 12:56:53 jalet |
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151 | # Internationalization begins... |
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152 | # |
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153 | # Revision 1.15 2003/02/08 22:09:52 jalet |
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154 | # Name check method moved here |
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155 | # |
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156 | # Revision 1.14 2003/02/07 10:42:45 jalet |
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157 | # Indentation problem |
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158 | # |
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159 | # Revision 1.13 2003/02/07 08:34:16 jalet |
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160 | # Test wrt date limit was wrong |
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161 | # |
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162 | # Revision 1.12 2003/02/06 23:20:02 jalet |
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163 | # warnpykota doesn't need any user/group name argument, mimicing the |
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164 | # warnquota disk quota tool. |
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165 | # |
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166 | # Revision 1.11 2003/02/06 22:54:33 jalet |
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167 | # warnpykota should be ok |
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168 | # |
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169 | # Revision 1.10 2003/02/06 15:03:11 jalet |
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170 | # added a method to set the limit date |
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171 | # |
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172 | # Revision 1.9 2003/02/06 10:39:23 jalet |
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173 | # Preliminary edpykota work. |
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174 | # |
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175 | # Revision 1.8 2003/02/06 09:19:02 jalet |
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176 | # More robust behavior (hopefully) when the user or printer is not managed |
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177 | # correctly by the Quota System : e.g. cupsFilter added in ppd file, but |
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178 | # printer and/or user not 'yet?' in storage. |
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179 | # |
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180 | # Revision 1.7 2003/02/06 00:00:45 jalet |
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181 | # Now includes the printer name in email messages |
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182 | # |
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183 | # Revision 1.6 2003/02/05 23:55:02 jalet |
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184 | # Cleaner email messages |
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185 | # |
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186 | # Revision 1.5 2003/02/05 23:45:09 jalet |
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187 | # Better DateTime manipulation wrt grace delay |
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188 | # |
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189 | # Revision 1.4 2003/02/05 23:26:22 jalet |
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190 | # Incorrect handling of grace delay |
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191 | # |
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192 | # Revision 1.3 2003/02/05 22:16:20 jalet |
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193 | # DEVICE_URI is undefined outside of CUPS, i.e. for normal command line tools |
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194 | # |
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195 | # Revision 1.2 2003/02/05 22:10:29 jalet |
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196 | # Typos |
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197 | # |
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198 | # Revision 1.1 2003/02/05 21:28:17 jalet |
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199 | # Initial import into CVS |
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200 | # |
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201 | # |
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202 | # |
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203 | |
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204 | import sys |
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205 | import fnmatch |
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206 | import getopt |
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207 | import smtplib |
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208 | import gettext |
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209 | import locale |
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210 | |
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211 | from mx import DateTime |
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212 | |
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213 | from pykota import version, config, storage, logger |
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214 | |
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215 | class PyKotaToolError(Exception): |
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216 | """An exception for PyKota config related stuff.""" |
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217 | def __init__(self, message = ""): |
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218 | self.message = message |
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219 | Exception.__init__(self, message) |
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220 | def __repr__(self): |
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221 | return self.message |
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222 | __str__ = __repr__ |
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223 | |
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224 | class PyKotaTool : |
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225 | """Base class for all PyKota command line tools.""" |
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226 | def __init__(self, doc="PyKota %s (c) 2003 %s" % (version.__version__, version.__author__)) : |
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227 | """Initializes the command line tool.""" |
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228 | # locale stuff |
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229 | try : |
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230 | locale.setlocale(locale.LC_ALL, "") |
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231 | gettext.install("pykota") |
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232 | except (locale.Error, IOError) : |
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233 | gettext.NullTranslations().install() |
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234 | |
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235 | # pykota specific stuff |
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236 | self.documentation = doc |
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237 | self.config = config.PyKotaConfig("/etc/pykota") |
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238 | self.logger = logger.openLogger(self) |
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239 | self.debug = self.config.getDebug() |
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240 | self.storage = storage.openConnection(self) |
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241 | self.smtpserver = self.config.getSMTPServer() |
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242 | |
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243 | def logdebug(self, message) : |
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244 | """Logs something to debug output if debug is enabled.""" |
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245 | if self.debug : |
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246 | self.logger.log_message(message, "debug") |
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247 | |
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248 | def clean(self) : |
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249 | """Ensures that the database is closed.""" |
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250 | try : |
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251 | self.storage.close() |
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252 | except (TypeError, NameError, AttributeError) : |
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253 | pass |
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254 | |
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255 | def display_version_and_quit(self) : |
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256 | """Displays version number, then exists successfully.""" |
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257 | self.clean() |
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258 | print version.__version__ |
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259 | sys.exit(0) |
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260 | |
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261 | def display_usage_and_quit(self) : |
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262 | """Displays command line usage, then exists successfully.""" |
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263 | self.clean() |
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264 | print self.documentation |
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265 | sys.exit(0) |
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266 | |
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267 | def parseCommandline(self, argv, short, long, allownothing=0) : |
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268 | """Parses the command line, controlling options.""" |
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269 | # split options in two lists: those which need an argument, those which don't need any |
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270 | withoutarg = [] |
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271 | witharg = [] |
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272 | lgs = len(short) |
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273 | i = 0 |
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274 | while i < lgs : |
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275 | ii = i + 1 |
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276 | if (ii < lgs) and (short[ii] == ':') : |
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277 | # needs an argument |
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278 | witharg.append(short[i]) |
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279 | ii = ii + 1 # skip the ':' |
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280 | else : |
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281 | # doesn't need an argument |
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282 | withoutarg.append(short[i]) |
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283 | i = ii |
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284 | |
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285 | for option in long : |
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286 | if option[-1] == '=' : |
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287 | # needs an argument |
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288 | witharg.append(option[:-1]) |
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289 | else : |
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290 | # doesn't need an argument |
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291 | withoutarg.append(option) |
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292 | |
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293 | # we begin with all possible options unset |
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294 | parsed = {} |
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295 | for option in withoutarg + witharg : |
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296 | parsed[option] = None |
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297 | |
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298 | # then we parse the command line |
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299 | args = [] # to not break if something unexpected happened |
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300 | try : |
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301 | options, args = getopt.getopt(argv, short, long) |
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302 | if options : |
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303 | for (o, v) in options : |
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304 | # we skip the '-' chars |
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305 | lgo = len(o) |
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306 | i = 0 |
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307 | while (i < lgo) and (o[i] == '-') : |
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308 | i = i + 1 |
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309 | o = o[i:] |
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310 | if o in witharg : |
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311 | # needs an argument : set it |
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312 | parsed[o] = v |
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313 | elif o in withoutarg : |
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314 | # doesn't need an argument : boolean |
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315 | parsed[o] = 1 |
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316 | else : |
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317 | # should never occur |
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318 | raise PyKotaToolError, "Unexpected problem when parsing command line" |
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319 | elif (not args) and (not allownothing) and sys.stdin.isatty() : # no option and no argument, we display help if we are a tty |
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320 | self.display_usage_and_quit() |
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321 | except getopt.error, msg : |
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322 | sys.stderr.write("%s\n" % msg) |
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323 | sys.stderr.flush() |
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324 | self.display_usage_and_quit() |
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325 | return (parsed, args) |
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326 | |
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327 | def isValidName(self, name) : |
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328 | """Checks if a user or printer name is valid.""" |
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329 | # unfortunately Python 2.1 string modules doesn't define ascii_letters... |
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330 | asciiletters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' |
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331 | digits = '0123456789' |
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332 | if name[0] in asciiletters : |
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333 | validchars = asciiletters + digits + "-_" |
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334 | for c in name[1:] : |
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335 | if c not in validchars : |
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336 | return 0 |
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337 | return 1 |
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338 | return 0 |
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339 | |
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340 | def matchString(self, s, patterns) : |
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341 | """Returns 1 if the string s matches one of the patterns, else 0.""" |
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342 | for pattern in patterns : |
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343 | if fnmatch.fnmatchcase(s, pattern) : |
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344 | return 1 |
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345 | return 0 |
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346 | |
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347 | def sendMessage(self, adminmail, touser, fullmessage) : |
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348 | """Sends an email message containing headers to some user.""" |
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349 | if "@" not in touser : |
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350 | touser = "%s@%s" % (touser, self.smtpserver) |
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351 | server = smtplib.SMTP(self.smtpserver) |
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352 | try : |
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353 | server.sendmail(adminmail, [touser], fullmessage) |
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354 | except smtplib.SMTPRecipientsRefused, answer : |
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355 | for (k, v) in answer.recipients.items() : |
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356 | self.logger.log_message(_("Impossible to send mail to %s, error %s : %s") % (k, v[0], v[1]), "error") |
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357 | server.quit() |
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358 | |
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359 | def sendMessageToUser(self, admin, adminmail, user, subject, message) : |
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360 | """Sends an email message to a user.""" |
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361 | message += _("\n\nPlease contact your system administrator :\n\n\t%s - <%s>\n") % (admin, adminmail) |
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362 | self.sendMessage(adminmail, user.Email or user.Name, "Subject: %s\n\n%s" % (subject, message)) |
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363 | |
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364 | def sendMessageToAdmin(self, adminmail, subject, message) : |
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365 | """Sends an email message to the Print Quota administrator.""" |
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366 | self.sendMessage(adminmail, adminmail, "Subject: %s\n\n%s" % (subject, message)) |
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367 | |
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368 | def checkGroupPQuota(self, grouppquota) : |
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369 | """Checks the group quota on a printer and deny or accept the job.""" |
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370 | group = grouppquota.Group |
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371 | printer = grouppquota.Printer |
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372 | if group.LimitBy and (group.LimitBy.lower() == "balance") : |
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373 | if group.AccountBalance <= 0.0 : |
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374 | action = "DENY" |
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375 | elif group.AccountBalance <= self.config.getPoorMan() : |
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376 | action = "WARN" |
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377 | else : |
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378 | action = "ALLOW" |
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379 | else : |
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380 | if grouppquota.SoftLimit is not None : |
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381 | softlimit = int(grouppquota.SoftLimit) |
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382 | if grouppquota.PageCounter < softlimit : |
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383 | action = "ALLOW" |
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384 | else : |
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385 | if grouppquota.HardLimit is None : |
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386 | # only a soft limit, this is equivalent to having only a hard limit |
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387 | action = "DENY" |
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388 | else : |
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389 | hardlimit = int(grouppquota.HardLimit) |
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390 | if softlimit <= grouppquota.PageCounter < hardlimit : |
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391 | now = DateTime.now() |
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392 | if grouppquota.DateLimit is not None : |
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393 | datelimit = DateTime.ISO.ParseDateTime(grouppquota.DateLimit) |
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394 | else : |
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395 | datelimit = now + self.config.getGraceDelay(printer.Name) |
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396 | grouppquota.setDateLimit(datelimit) |
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397 | if now < datelimit : |
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398 | action = "WARN" |
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399 | else : |
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400 | action = "DENY" |
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401 | else : |
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402 | action = "DENY" |
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403 | else : |
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404 | if grouppquota.HardLimit is not None : |
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405 | # no soft limit, only a hard one. |
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406 | hardlimit = int(grouppquota.HardLimit) |
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407 | if grouppquota.PageCounter < hardlimit : |
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408 | action = "ALLOW" |
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409 | else : |
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410 | action = "DENY" |
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411 | else : |
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412 | # Both are unset, no quota, i.e. accounting only |
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413 | action = "ALLOW" |
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414 | return action |
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415 | |
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416 | def checkUserPQuota(self, userpquota) : |
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417 | """Checks the user quota on a printer and deny or accept the job.""" |
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418 | user = userpquota.User |
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419 | printer = userpquota.Printer |
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420 | |
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421 | # first we check any group the user is a member of |
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422 | for group in self.storage.getUserGroups(user) : |
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423 | grouppquota = self.storage.getGroupPQuota(group, printer) |
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424 | if grouppquota.Exists : |
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425 | action = self.checkGroupPQuota(grouppquota) |
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426 | if action == "DENY" : |
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427 | return action |
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428 | |
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429 | # then we check the user's own quota |
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430 | policy = self.config.getPrinterPolicy(printer.Name) |
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431 | if user.LimitBy and (user.LimitBy.lower() == "balance") : |
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432 | if user.AccountBalance is None : |
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433 | if policy == "ALLOW" : |
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434 | action = "POLICY_ALLOW" |
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435 | else : |
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436 | action = "POLICY_DENY" |
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437 | self.logger.log_message(_("Unable to find user %s's account balance, applying default policy (%s) for printer %s") % (user.Name, action, printer.Name)) |
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438 | else : |
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439 | val = float(user.AccountBalance or 0.0) |
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440 | if val <= 0.0 : |
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441 | action = "DENY" |
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442 | elif val <= self.config.getPoorMan() : |
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443 | action = "WARN" |
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444 | else : |
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445 | action = "ALLOW" |
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446 | else : |
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447 | if not userpquota.Exists : |
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448 | # Unknown userquota |
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449 | if policy == "ALLOW" : |
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450 | action = "POLICY_ALLOW" |
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451 | else : |
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452 | action = "POLICY_DENY" |
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453 | self.logger.log_message(_("Unable to match user %s on printer %s, applying default policy (%s)") % (user.Name, printer.Name, action)) |
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454 | else : |
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455 | pagecounter = int(userpquota.PageCounter or 0) |
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456 | if userpquota.SoftLimit is not None : |
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457 | softlimit = int(userpquota.SoftLimit) |
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458 | if pagecounter < softlimit : |
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459 | action = "ALLOW" |
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460 | else : |
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461 | if userpquota.HardLimit is None : |
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462 | # only a soft limit, this is equivalent to having only a hard limit |
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463 | action = "DENY" |
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464 | else : |
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465 | hardlimit = int(userpquota.HardLimit) |
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466 | if softlimit <= pagecounter < hardlimit : |
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467 | now = DateTime.now() |
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468 | if userpquota.DateLimit is not None : |
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469 | datelimit = DateTime.ISO.ParseDateTime(userpquota.DateLimit) |
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470 | else : |
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471 | datelimit = now + self.config.getGraceDelay(printer.Name) |
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472 | userpquota.setDateLimit(datelimit) |
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473 | if now < datelimit : |
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474 | action = "WARN" |
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475 | else : |
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476 | action = "DENY" |
---|
477 | else : |
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478 | action = "DENY" |
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479 | else : |
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480 | if userpquota.HardLimit is not None : |
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481 | # no soft limit, only a hard one. |
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482 | hardlimit = int(userpquota.HardLimit) |
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483 | if pagecounter < hardlimit : |
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484 | action = "ALLOW" |
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485 | else : |
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486 | action = "DENY" |
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487 | else : |
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488 | # Both are unset, no quota, i.e. accounting only |
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489 | action = "ALLOW" |
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490 | return action |
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491 | |
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492 | def warnGroupPQuota(self, grouppquota) : |
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493 | """Checks a group quota and send messages if quota is exceeded on current printer.""" |
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494 | group = grouppquota.Group |
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495 | printer = grouppquota.Printer |
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496 | admin = self.config.getAdmin(printer.Name) |
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497 | adminmail = self.config.getAdminMail(printer.Name) |
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498 | mailto = self.config.getMailTo(printer.Name) |
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499 | action = self.checkGroupPQuota(grouppquota) |
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500 | if action.startswith("POLICY_") : |
---|
501 | action = action[7:] |
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502 | if action == "DENY" : |
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503 | adminmessage = _("Print Quota exceeded for group %s on printer %s") % (group.Name, printer.Name) |
---|
504 | self.logger.log_message(adminmessage) |
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505 | if mailto in [ "BOTH", "ADMIN" ] : |
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506 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
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507 | for user in self.storage.getGroupMembers(group) : |
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508 | if mailto in [ "BOTH", "USER" ] : |
---|
509 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), self.config.getHardWarn(printer.Name)) |
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510 | elif action == "WARN" : |
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511 | adminmessage = _("Print Quota low for group %s on printer %s") % (group.Name, printer.Name) |
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512 | self.logger.log_message(adminmessage) |
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513 | if mailto in [ "BOTH", "ADMIN" ] : |
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514 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
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515 | if group.LimitBy and (group.LimitBy.lower() == "balance") : |
---|
516 | message = self.config.getPoorWarn() |
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517 | else : |
---|
518 | message = self.config.getSoftWarn(printer.Name) |
---|
519 | for user in self.storage.getGroupMembers(group) : |
---|
520 | if mailto in [ "BOTH", "USER" ] : |
---|
521 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), message) |
---|
522 | return action |
---|
523 | |
---|
524 | def warnUserPQuota(self, userpquota) : |
---|
525 | """Checks a user quota and send him a message if quota is exceeded on current printer.""" |
---|
526 | user = userpquota.User |
---|
527 | printer = userpquota.Printer |
---|
528 | admin = self.config.getAdmin(printer.Name) |
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529 | adminmail = self.config.getAdminMail(printer.Name) |
---|
530 | mailto = self.config.getMailTo(printer.Name) |
---|
531 | action = self.checkUserPQuota(userpquota) |
---|
532 | if action.startswith("POLICY_") : |
---|
533 | action = action[7:] |
---|
534 | if action == "DENY" : |
---|
535 | adminmessage = _("Print Quota exceeded for user %s on printer %s") % (user.Name, printer.Name) |
---|
536 | self.logger.log_message(adminmessage) |
---|
537 | if mailto in [ "BOTH", "USER" ] : |
---|
538 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), self.config.getHardWarn(printer.Name)) |
---|
539 | if mailto in [ "BOTH", "ADMIN" ] : |
---|
540 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
---|
541 | elif action == "WARN" : |
---|
542 | adminmessage = _("Print Quota low for user %s on printer %s") % (user.Name, printer.Name) |
---|
543 | self.logger.log_message(adminmessage) |
---|
544 | if mailto in [ "BOTH", "USER" ] : |
---|
545 | if user.LimitBy and (user.LimitBy.lower() == "balance") : |
---|
546 | message = self.config.getPoorWarn() |
---|
547 | else : |
---|
548 | message = self.config.getSoftWarn(printer.Name) |
---|
549 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Low"), message) |
---|
550 | if mailto in [ "BOTH", "ADMIN" ] : |
---|
551 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
---|
552 | return action |
---|