1 | # PyKota |
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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 1.6 2003/07/07 11:49:24 jalet |
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24 | # Lots of small fixes with the help of PyChecker |
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25 | # |
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26 | # Revision 1.5 2003/07/07 08:33:19 jalet |
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27 | # Bug fix due to a typo in LDAP code |
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28 | # |
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29 | # Revision 1.4 2003/06/30 13:54:21 jalet |
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30 | # Sorts by user / group name |
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31 | # |
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32 | # Revision 1.3 2003/06/25 14:10:01 jalet |
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33 | # Hey, it may work (edpykota --reset excepted) ! |
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34 | # |
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35 | # Revision 1.2 2003/06/12 21:09:57 jalet |
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36 | # wrongly placed code. |
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37 | # |
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38 | # Revision 1.1 2003/06/10 16:37:54 jalet |
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39 | # Deletion of the second user which is not needed anymore. |
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40 | # Added a debug configuration field in /etc/pykota.conf |
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41 | # All queries can now be sent to the logger in debug mode, this will |
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42 | # greatly help improve performance when time for this will come. |
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43 | # |
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44 | # |
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45 | # |
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46 | # |
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47 | |
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48 | from pykota.storage import PyKotaStorageError |
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49 | from pykota.storage import StorageObject,StorageUser,StorageGroup,StoragePrinter,StorageLastJob,StorageUserPQuota,StorageGroupPQuota |
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50 | |
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51 | try : |
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52 | import pg |
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53 | except ImportError : |
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54 | import sys |
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55 | # TODO : to translate or not to translate ? |
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56 | raise PyKotaStorageError, "This python version (%s) doesn't seem to have the PygreSQL module installed correctly." % sys.version.split()[0] |
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57 | |
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58 | class Storage : |
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59 | def __init__(self, pykotatool, host, dbname, user, passwd) : |
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60 | """Opens the PostgreSQL database connection.""" |
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61 | self.tool = pykotatool |
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62 | self.debug = pykotatool.config.getDebug() |
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63 | self.closed = 1 |
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64 | try : |
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65 | (host, port) = host.split(":") |
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66 | port = int(port) |
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67 | except ValueError : |
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68 | port = -1 # Use PostgreSQL's default tcp/ip port (5432). |
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69 | |
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70 | try : |
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71 | self.database = pg.connect(host=host, port=port, dbname=dbname, user=user, passwd=passwd) |
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72 | except pg.error, msg : |
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73 | raise PyKotaStorageError, msg |
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74 | else : |
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75 | self.closed = 0 |
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76 | if self.debug : |
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77 | self.tool.logger.log_message("Database opened (host=%s, port=%s, dbname=%s, user=%s)" % (host, port, dbname, user), "debug") |
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78 | |
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79 | def __del__(self) : |
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80 | """Closes the database connection.""" |
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81 | if not self.closed : |
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82 | self.database.close() |
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83 | self.closed = 1 |
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84 | if self.debug : |
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85 | self.tool.logger.log_message("Database closed.", "debug") |
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86 | |
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87 | def beginTransaction(self) : |
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88 | """Starts a transaction.""" |
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89 | self.database.query("BEGIN;") |
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90 | if self.debug : |
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91 | self.tool.logger.log_message("Transaction begins...", "debug") |
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92 | |
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93 | def commitTransaction(self) : |
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94 | """Commits a transaction.""" |
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95 | self.database.query("COMMIT;") |
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96 | if self.debug : |
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97 | self.tool.logger.log_message("Transaction committed.", "debug") |
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98 | |
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99 | def rollbackTransaction(self) : |
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100 | """Rollbacks a transaction.""" |
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101 | self.database.query("ROLLBACK;") |
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102 | if self.debug : |
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103 | self.tool.logger.log_message("Transaction aborted.", "debug") |
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104 | |
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105 | def doSearch(self, query) : |
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106 | """Does a search query.""" |
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107 | query = query.strip() |
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108 | if not query.endswith(';') : |
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109 | query += ';' |
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110 | try : |
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111 | if self.debug : |
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112 | self.tool.logger.log_message("QUERY : %s" % query, "debug") |
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113 | result = self.database.query(query) |
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114 | except pg.error, msg : |
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115 | raise PyKotaStorageError, msg |
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116 | else : |
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117 | if (result is not None) and (result.ntuples() > 0) : |
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118 | return result.dictresult() |
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119 | |
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120 | def doModify(self, query) : |
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121 | """Does a (possibly multiple) modify query.""" |
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122 | query = query.strip() |
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123 | if not query.endswith(';') : |
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124 | query += ';' |
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125 | try : |
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126 | if self.debug : |
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127 | self.tool.logger.log_message("QUERY : %s" % query, "debug") |
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128 | result = self.database.query(query) |
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129 | except pg.error, msg : |
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130 | raise PyKotaStorageError, msg |
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131 | else : |
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132 | return result |
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133 | |
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134 | def doQuote(self, field) : |
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135 | """Quotes a field for use as a string in SQL queries.""" |
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136 | if type(field) == type(0.0) : |
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137 | typ = "decimal" |
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138 | elif type(field) == type(0) : |
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139 | typ = "int" |
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140 | else : |
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141 | typ = "text" |
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142 | return pg._quote(field, typ) |
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143 | |
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144 | def getUser(self, username) : |
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145 | """Extracts user information given its name.""" |
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146 | user = StorageUser(self, username) |
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147 | result = self.doSearch("SELECT * FROM users WHERE username=%s LIMIT 1" % self.doQuote(username)) |
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148 | if result : |
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149 | fields = result[0] |
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150 | user.ident = fields.get("id") |
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151 | user.LimitBy = fields.get("limitby") |
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152 | user.AccountBalance = fields.get("balance") |
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153 | user.LifeTimePaid = fields.get("lifetimepaid") |
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154 | user.Email = fields.get("email") |
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155 | user.Exists = 1 |
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156 | return user |
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157 | |
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158 | def getGroup(self, groupname) : |
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159 | """Extracts group information given its name.""" |
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160 | group = StorageGroup(self, groupname) |
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161 | result = self.doSearch("SELECT * FROM groups WHERE groupname=%s LIMIT 1" % self.doQuote(groupname)) |
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162 | if result : |
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163 | fields = result[0] |
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164 | group.ident = fields.get("id") |
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165 | group.LimitBy = fields.get("limitby") |
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166 | result = self.doSearch("SELECT SUM(balance) AS balance, SUM(lifetimepaid) AS lifetimepaid FROM users WHERE id IN (SELECT userid FROM groupsmembers WHERE groupid=%s)" % self.doQuote(group.ident)) |
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167 | if result : |
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168 | fields = result[0] |
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169 | group.AccountBalance = fields.get("balance") |
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170 | group.LifeTimePaid = fields.get("lifetimepaid") |
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171 | group.Exists = 1 |
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172 | return group |
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173 | |
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174 | def getPrinter(self, printername) : |
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175 | """Extracts printer information given its name.""" |
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176 | printer = StoragePrinter(self, printername) |
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177 | result = self.doSearch("SELECT * FROM printers WHERE printername=%s LIMIT 1" % self.doQuote(printername)) |
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178 | if result : |
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179 | fields = result[0] |
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180 | printer.ident = fields.get("id") |
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181 | printer.PricePerJob = fields.get("priceperjob") |
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182 | printer.PricePerPage = fields.get("priceperpage") |
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183 | printer.LastJob = self.getPrinterLastJob(printer) |
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184 | printer.Exists = 1 |
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185 | return printer |
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186 | |
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187 | def getUserGroups(self, user) : |
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188 | """Returns the user's groups list.""" |
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189 | groups = [] |
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190 | result = self.doSearch("SELECT groupname FROM groupsmembers JOIN groups ON groupsmembers.groupid=groups.id WHERE userid=%s" % self.doQuote(user.ident)) |
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191 | if result : |
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192 | for record in result : |
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193 | groups.append(self.getGroup(record.get("groupname"))) |
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194 | return groups |
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195 | |
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196 | def getGroupMembers(self, group) : |
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197 | """Returns the group's members list.""" |
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198 | groupmembers = [] |
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199 | result = self.doSearch("SELECT * FROM groupsmembers JOIN users ON groupsmembers.userid=users.id WHERE groupid=%s" % self.doQuote(group.ident)) |
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200 | if result : |
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201 | for record in result : |
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202 | user = StorageUser(self, record.get("username")) |
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203 | user.ident = record.get("userid") |
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204 | user.LimitBy = record.get("limitby") |
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205 | user.AccountBalance = record.get("balance") |
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206 | user.LifeTimePaid = record.get("lifetimepaid") |
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207 | user.Email = record.get("email") |
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208 | user.Exists = 1 |
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209 | groupmembers.append(user) |
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210 | return groupmembers |
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211 | |
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212 | def getUserPQuota(self, user, printer) : |
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213 | """Extracts a user print quota.""" |
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214 | userpquota = StorageUserPQuota(self, user, printer) |
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215 | if user.Exists : |
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216 | result = self.doSearch("SELECT id, lifepagecounter, pagecounter, softlimit, hardlimit, datelimit FROM userpquota WHERE userid=%s AND printerid=%s" % (self.doQuote(user.ident), self.doQuote(printer.ident))) |
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217 | if result : |
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218 | fields = result[0] |
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219 | userpquota.ident = fields.get("id") |
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220 | userpquota.PageCounter = fields.get("pagecounter") |
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221 | userpquota.LifePageCounter = fields.get("lifepagecounter") |
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222 | userpquota.SoftLimit = fields.get("softlimit") |
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223 | userpquota.HardLimit = fields.get("hardlimit") |
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224 | userpquota.DateLimit = fields.get("datelimit") |
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225 | userpquota.Exists = 1 |
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226 | return userpquota |
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227 | |
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228 | def getGroupPQuota(self, group, printer) : |
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229 | """Extracts a group print quota.""" |
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230 | grouppquota = StorageGroupPQuota(self, group, printer) |
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231 | if group.Exists : |
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232 | result = self.doSearch("SELECT id, softlimit, hardlimit, datelimit FROM grouppquota WHERE groupid=%s AND printerid=%s" % (self.doQuote(group.ident), self.doQuote(printer.ident))) |
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233 | if result : |
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234 | fields = result[0] |
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235 | grouppquota.ident = fields.get("id") |
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236 | grouppquota.SoftLimit = fields.get("softlimit") |
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237 | grouppquota.HardLimit = fields.get("hardlimit") |
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238 | grouppquota.DateLimit = fields.get("datelimit") |
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239 | result = self.doSearch("SELECT SUM(lifepagecounter) AS lifepagecounter, SUM(pagecounter) AS pagecounter FROM userpquota WHERE printerid=%s AND userid IN (SELECT userid FROM groupsmembers WHERE groupid=%s)" % (self.doQuote(printer.ident), self.doQuote(group.ident))) |
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240 | if result : |
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241 | fields = result[0] |
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242 | grouppquota.PageCounter = fields.get("pagecounter") |
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243 | grouppquota.LifePageCounter = fields.get("lifepagecounter") |
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244 | grouppquota.Exists = 1 |
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245 | return grouppquota |
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246 | |
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247 | def getPrinterLastJob(self, printer) : |
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248 | """Extracts a printer's last job information.""" |
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249 | lastjob = StorageLastJob(self, printer) |
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250 | result = self.doSearch("SELECT jobhistory.id, jobid, userid, username, pagecounter, jobsize, jobdate FROM jobhistory, users WHERE printerid=%s AND userid=users.id ORDER BY jobdate DESC LIMIT 1" % self.doQuote(printer.ident)) |
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251 | if result : |
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252 | fields = result[0] |
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253 | lastjob.ident = fields.get("id") |
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254 | lastjob.JobId = fields.get("jobid") |
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255 | lastjob.User = self.getUser(fields.get("username")) |
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256 | lastjob.PrinterPageCounter = fields.get("pagecounter") |
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257 | lastjob.JobSize = fields.get("jobsize") |
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258 | lastjob.JobAction = fields.get("action") |
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259 | lastjob.JobDate = fields.get("jobdate") |
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260 | lastjob.Exists = 1 |
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261 | return lastjob |
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262 | |
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263 | def getMatchingPrinters(self, printerpattern) : |
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264 | """Returns the list of all printers for which name matches a certain pattern.""" |
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265 | printers = [] |
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266 | # We 'could' do a SELECT printername FROM printers WHERE printername LIKE ... |
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267 | # but we don't because other storages semantics may be different, so every |
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268 | # storage should use fnmatch to match patterns and be storage agnostic |
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269 | result = self.doSearch("SELECT * FROM printers") |
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270 | if result : |
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271 | for record in result : |
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272 | if self.tool.matchString(record["printername"], [ printerpattern ]) : |
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273 | printer = StoragePrinter(self, record["printername"]) |
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274 | printer.ident = record.get("id") |
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275 | printer.PricePerJob = record.get("priceperjob") |
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276 | printer.PricePerPage = record.get("priceperpage") |
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277 | printer.LastJob = self.getPrinterLastJob(printer) |
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278 | printer.Exists = 1 |
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279 | printers.append(printer) |
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280 | return printers |
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281 | |
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282 | def getPrinterUsersAndQuotas(self, printer, names=None) : |
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283 | """Returns the list of users who uses a given printer, along with their quotas.""" |
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284 | usersandquotas = [] |
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285 | result = self.doSearch("SELECT users.id as uid,username,balance,lifetimepaid,limitby,userpquota.id,lifepagecounter,pagecounter,softlimit,hardlimit,datelimit FROM users JOIN userpquota ON users.id=userpquota.userid AND printerid=%s ORDER BY username ASC" % self.doQuote(printer.ident)) |
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286 | if result : |
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287 | for record in result : |
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288 | user = StorageUser(self, record.get("username")) |
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289 | if (names is None) or self.tool.matchString(user.Name, names) : |
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290 | user.ident = record.get("uid") |
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291 | user.LimitBy = record.get("limitby") |
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292 | user.AccountBalance = record.get("balance") |
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293 | user.LifeTimePaid = record.get("lifetimepaid") |
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294 | user.Email = record.get("email") # TODO : Always None here |
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295 | user.Exists = 1 |
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296 | userpquota = StorageUserPQuota(self, user, printer) |
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297 | userpquota.ident = record.get("id") |
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298 | userpquota.PageCounter = record.get("pagecounter") |
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299 | userpquota.LifePageCounter = record.get("lifepagecounter") |
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300 | userpquota.SoftLimit = record.get("softlimit") |
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301 | userpquota.HardLimit = record.get("hardlimit") |
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302 | userpquota.DateLimit = record.get("datelimit") |
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303 | userpquota.Exists = 1 |
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304 | usersandquotas.append((user, userpquota)) |
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305 | return usersandquotas |
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306 | |
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307 | def getPrinterGroupsAndQuotas(self, printer, names=None) : |
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308 | """Returns the list of groups which uses a given printer, along with their quotas.""" |
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309 | groupsandquotas = [] |
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310 | result = self.doSearch("SELECT groupname FROM groups JOIN grouppquota ON groups.id=grouppquota.groupid AND printerid=%s ORDER BY groupname ASC" % self.doQuote(printer.ident)) |
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311 | if result : |
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312 | for record in result : |
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313 | group = self.getGroup(record.get("groupname")) |
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314 | if (names is None) or self.tool.matchString(group.Name, names) : |
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315 | grouppquota = self.getGroupPQuota(group, printer) |
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316 | groupsandquotas.append((group, grouppquota)) |
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317 | return groupsandquotas |
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318 | |
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319 | def addPrinter(self, printername) : |
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320 | """Adds a printer to the quota storage, returns it.""" |
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321 | self.doModify("INSERT INTO printers (printername) VALUES (%s)" % self.doQuote(printername)) |
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322 | return self.getPrinter(printername) |
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323 | |
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324 | def addUser(self, user) : |
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325 | """Adds a user to the quota storage, returns its id.""" |
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326 | self.doModify("INSERT INTO users (username, limitby, balance, lifetimepaid) VALUES (%s, %s, %s, %s)" % (self.doQuote(user.Name), self.doQuote(user.LimitBy), self.doQuote(user.AccountBalance), self.doQuote(user.LifeTimePaid))) |
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327 | return self.getUser(user.Name) |
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328 | |
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329 | def addGroup(self, group) : |
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330 | """Adds a group to the quota storage, returns its id.""" |
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331 | self.doModify("INSERT INTO groups (groupname, limitby) VALUES (%s, %s)" % (self.doQuote(group.Name), self.doQuote(group.LimitBy))) |
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332 | return self.getGroup(group.Name) |
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333 | |
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334 | def addUserToGroup(self, user, group) : |
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335 | """Adds an user to a group.""" |
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336 | result = self.doSearch("SELECT COUNT(*) AS mexists FROM groupsmembers WHERE groupid=%s AND userid=%s" % (self.doQuote(group.ident), self.doQuote(user.ident))) |
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337 | try : |
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338 | mexists = int(result[0].get("mexists")) |
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339 | except (IndexError, TypeError) : |
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340 | mexists = 0 |
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341 | if not mexists : |
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342 | self.doModify("INSERT INTO groupsmembers (groupid, userid) VALUES (%s, %s)" % (self.doQuote(group.ident), self.doQuote(user.ident))) |
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343 | |
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344 | def addUserPQuota(self, user, printer) : |
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345 | """Initializes a user print quota on a printer.""" |
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346 | self.doModify("INSERT INTO userpquota (userid, printerid) VALUES (%s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident))) |
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347 | return self.getUserPQuota(user, printer) |
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348 | |
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349 | def addGroupPQuota(self, group, printer) : |
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350 | """Initializes a group print quota on a printer.""" |
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351 | self.doModify("INSERT INTO grouppquota (groupid, printerid) VALUES (%s, %s)" % (self.doQuote(group.ident), self.doQuote(printer.ident))) |
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352 | return self.getGroupPQuota(group, printer) |
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353 | |
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354 | def writePrinterPrices(self, printer) : |
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355 | """Write the printer's prices back into the storage.""" |
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356 | self.doModify("UPDATE printers SET priceperpage=%s, priceperjob=%s WHERE printerid=%s" % (self.doQuote(printer.PricePerPage), self.doQuote(printer.PricePerJob), self.doQuote(printer.ident))) |
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357 | |
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358 | def writeUserLimitBy(self, user, limitby) : |
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359 | """Sets the user's limiting factor.""" |
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360 | self.doModify("UPDATE users SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(user.ident))) |
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361 | |
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362 | def writeGroupLimitBy(self, group, limitby) : |
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363 | """Sets the group's limiting factor.""" |
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364 | self.doModify("UPDATE groups SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(group.ident))) |
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365 | |
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366 | def writeUserPQuotaDateLimit(self, userpquota, datelimit) : |
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367 | """Sets the date limit permanently for a user print quota.""" |
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368 | self.doModify("UPDATE userpquota SET datelimit::TIMESTAMP=%s WHERE id=%s" % (self.doQuote(datelimit), self.doQuote(userpquota.ident))) |
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369 | |
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370 | def writeGroupPQuotaDateLimit(self, grouppquota, datelimit) : |
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371 | """Sets the date limit permanently for a group print quota.""" |
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372 | self.doModify("UPDATE grouppquota SET datelimit::TIMESTAMP=%s WHERE id=%s" % (self.doQuote(datelimit), self.doQuote(grouppquota.ident))) |
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373 | |
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374 | def writeUserPQuotaPagesCounters(self, userpquota, newpagecounter, newlifepagecounter) : |
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375 | """Sets the new page counters permanently for a user print quota.""" |
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376 | self.doModify("UPDATE userpquota SET pagecounter=%s,lifepagecounter=%s WHERE id=%s" % (self.doQuote(newpagecounter), self.doQuote(newlifepagecounter), self.doQuote(userpquota.ident))) |
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377 | |
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378 | def writeUserAccountBalance(self, user, newbalance, newlifetimepaid=None) : |
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379 | """Sets the new account balance and eventually new lifetime paid.""" |
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380 | if newlifetimepaid is not None : |
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381 | self.doModify("UPDATE users SET balance=%s, lifetimepaid=%s WHERE id=%s" % (self.doQuote(newbalance), self.doQuote(newlifetimepaid), self.doQuote(user.ident))) |
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382 | else : |
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383 | self.doModify("UPDATE users SET balance=%s WHERE id=%s" % (self.doQuote(newbalance), self.doQuote(user.ident))) |
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384 | |
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385 | def writeLastJobSize(self, lastjob, jobsize) : |
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386 | """Sets the last job's size permanently.""" |
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387 | self.doModify("UPDATE jobhistory SET jobsize=%s WHERE id=%s" % (self.doQuote(jobsize), self.doQuote(lastjob.ident))) |
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388 | |
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389 | def writeJobNew(self, printer, user, jobid, pagecounter, action, jobsize=None) : |
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390 | """Adds a job in a printer's history.""" |
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391 | if jobsize is not None : |
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392 | self.doModify("INSERT INTO jobhistory (userid, printerid, jobid, pagecounter, action, jobsize) VALUES (%s, %s, %s, %s, %s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident), self.doQuote(jobid), self.doQuote(pagecounter), self.doQuote(action), self.doQuote(jobsize))) |
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393 | else : |
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394 | self.doModify("INSERT INTO jobhistory (userid, printerid, jobid, pagecounter, action) VALUES (%s, %s, %s, %s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident), self.doQuote(jobid), self.doQuote(pagecounter), self.doQuote(action))) |
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395 | |
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396 | def writeUserPQuotaLimits(self, userpquota, softlimit, hardlimit) : |
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397 | """Sets soft and hard limits for a user quota.""" |
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398 | self.doModify("UPDATE userpquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE id=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(userpquota.ident))) |
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399 | |
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400 | def writeGroupPQuotaLimits(self, grouppquota, softlimit, hardlimit) : |
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401 | """Sets soft and hard limits for a group quota on a specific printer given (groupid, printerid).""" |
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402 | self.doModify("UPDATE grouppquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE id=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(grouppquota.ident))) |
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403 | |
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404 | def deleteUser(self, user) : |
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405 | """Completely deletes an user from the Quota Storage.""" |
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406 | # TODO : What should we do if we delete the last person who used a given printer ? |
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407 | # TODO : we can't reassign the last job to the previous one, because next user would be |
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408 | # TODO : incorrectly charged (overcharged). |
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409 | for q in [ |
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410 | "DELETE FROM groupsmembers WHERE userid=%s" % self.doQuote(user.ident), |
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411 | "DELETE FROM jobhistory WHERE userid=%s" % self.doQuote(user.ident), |
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412 | "DELETE FROM userpquota WHERE userid=%s" % self.doQuote(user.ident), |
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413 | "DELETE FROM users WHERE id=%s" % self.doQuote(user.ident), |
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414 | ] : |
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415 | self.doModify(q) |
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416 | |
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417 | def deleteGroup(self, group) : |
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418 | """Completely deletes a group from the Quota Storage.""" |
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419 | for q in [ |
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420 | "DELETE FROM groupsmembers WHERE groupid=%s" % self.doQuote(group.ident), |
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421 | "DELETE FROM grouppquota WHERE groupid=%s" % self.doQuote(group.ident), |
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422 | "DELETE FROM groups WHERE id=%s" % self.doQuote(group.ident), |
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423 | ] : |
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424 | self.doModify(q) |
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425 | |
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