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 1.1 2003/06/10 16:37:54 jalet |
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24 | # Deletion of the second user which is not needed anymore. |
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25 | # Added a debug configuration field in /etc/pykota.conf |
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26 | # All queries can now be sent to the logger in debug mode, this will |
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27 | # greatly help improve performance when time for this will come. |
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28 | # |
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29 | # |
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30 | # |
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31 | # |
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32 | |
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33 | import fnmatch |
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34 | |
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35 | from pykota.storage import PyKotaStorageError |
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36 | |
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37 | try : |
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38 | import pg |
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39 | except ImportError : |
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40 | import sys |
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41 | # TODO : to translate or not to translate ? |
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42 | raise PyKotaStorageError, "This python version (%s) doesn't seem to have the PygreSQL module installed correctly." % sys.version.split()[0] |
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43 | |
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44 | class Storage : |
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45 | def __init__(self, pykotatool, host, dbname, user, passwd) : |
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46 | """Opens the PostgreSQL database connection.""" |
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47 | self.tool = pykotatool |
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48 | self.debug = pykotatool.config.getDebug() |
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49 | self.closed = 1 |
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50 | try : |
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51 | (host, port) = host.split(":") |
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52 | port = int(port) |
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53 | except ValueError : |
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54 | port = -1 # Use PostgreSQL's default tcp/ip port (5432). |
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55 | |
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56 | try : |
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57 | self.database = pg.connect(host=host, port=port, dbname=dbname, user=user, passwd=passwd) |
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58 | self.closed = 0 |
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59 | except pg.error, msg : |
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60 | raise PyKotaStorageError, msg |
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61 | else : |
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62 | if self.debug : |
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63 | self.tool.logger.log_message("Database opened (host=%s, port=%s, dbname=%s, user=%s)" % (host, port, dbname, user), "debug") |
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64 | |
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65 | def __del__(self) : |
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66 | """Closes the database connection.""" |
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67 | if not self.closed : |
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68 | self.database.close() |
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69 | self.closed = 1 |
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70 | if self.debug : |
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71 | self.tool.logger.log_message("Database closed.", "debug") |
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72 | |
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73 | def doQuery(self, query) : |
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74 | """Does a query.""" |
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75 | if type(query) in (type([]), type(())) : |
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76 | query = ";".join(query) |
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77 | query = query.strip() |
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78 | if not query.endswith(';') : |
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79 | query += ';' |
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80 | self.database.query("BEGIN;") |
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81 | if self.debug : |
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82 | self.tool.logger.log_message("Transaction began.", "debug") |
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83 | try : |
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84 | if self.debug : |
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85 | self.tool.logger.log_message("QUERY : %s" % query, "debug") |
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86 | result = self.database.query(query) |
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87 | except pg.error, msg : |
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88 | self.database.query("ROLLBACK;") |
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89 | if self.debug : |
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90 | self.tool.logger.log_message("Transaction aborted.", "debug") |
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91 | raise PyKotaStorageError, msg |
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92 | else : |
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93 | self.database.query("COMMIT;") |
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94 | if self.debug : |
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95 | self.tool.logger.log_message("Transaction committed.", "debug") |
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96 | return result |
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97 | |
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98 | def doQuote(self, field) : |
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99 | """Quotes a field for use as a string in SQL queries.""" |
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100 | if type(field) == type(0.0) : |
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101 | typ = "decimal" |
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102 | elif type(field) == type(0) : |
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103 | typ = "int" |
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104 | else : |
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105 | typ = "text" |
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106 | return pg._quote(field, typ) |
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107 | |
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108 | def doParseResult(self, result) : |
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109 | """Returns the result as a list of Python mappings.""" |
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110 | if (result is not None) and (result.ntuples() > 0) : |
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111 | return result.dictresult() |
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112 | |
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113 | def getMatchingPrinters(self, printerpattern) : |
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114 | """Returns the list of all printers as tuples (id, name) for printer names which match a certain pattern.""" |
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115 | printerslist = [] |
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116 | # We 'could' do a SELECT printername FROM printers WHERE printername LIKE ... |
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117 | # but we don't because other storages semantics may be different, so every |
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118 | # storage should use fnmatch to match patterns and be storage agnostic |
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119 | result = self.doQuery("SELECT id, printername FROM printers") |
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120 | result = self.doParseResult(result) |
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121 | if result is not None : |
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122 | for printer in result : |
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123 | if fnmatch.fnmatchcase(printer["printername"], printerpattern) : |
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124 | printerslist.append((printer["id"], printer["printername"])) |
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125 | return printerslist |
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126 | |
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127 | def getPrinterId(self, printername) : |
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128 | """Returns a printerid given a printername.""" |
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129 | result = self.doQuery("SELECT id FROM printers WHERE printername=%s" % self.doQuote(printername)) |
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130 | try : |
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131 | return self.doParseResult(result)[0]["id"] |
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132 | except TypeError : # Not found |
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133 | return |
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134 | |
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135 | def getPrinterPrices(self, printerid) : |
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136 | """Returns a printer prices per page and per job given a printerid.""" |
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137 | result = self.doQuery("SELECT priceperpage, priceperjob FROM printers WHERE id=%s" % self.doQuote(printerid)) |
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138 | try : |
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139 | printerprices = self.doParseResult(result)[0] |
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140 | return (printerprices["priceperpage"], printerprices["priceperjob"]) |
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141 | except TypeError : # Not found |
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142 | return |
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143 | |
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144 | def setPrinterPrices(self, printerid, perpage, perjob) : |
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145 | """Sets prices per job and per page for a given printer.""" |
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146 | self.doQuery("UPDATE printers SET priceperpage=%s, priceperjob=%s WHERE id=%s" % (self.doQuote(perpage), self.doQuote(perjob), self.doQuote(printerid))) |
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147 | |
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148 | def getUserId(self, username) : |
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149 | """Returns a userid given a username.""" |
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150 | result = self.doQuery("SELECT id FROM users WHERE username=%s" % self.doQuote(username)) |
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151 | try : |
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152 | return self.doParseResult(result)[0]["id"] |
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153 | except TypeError : # Not found |
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154 | return |
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155 | |
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156 | def getGroupId(self, groupname) : |
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157 | """Returns a groupid given a grupname.""" |
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158 | result = self.doQuery("SELECT id FROM groups WHERE groupname=%s" % self.doQuote(groupname)) |
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159 | try : |
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160 | return self.doParseResult(result)[0]["id"] |
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161 | except TypeError : # Not found |
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162 | return |
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163 | |
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164 | def getJobHistoryId(self, jobid, userid, printerid) : |
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165 | """Returns the history line's id given a (jobid, userid, printerid).""" |
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166 | result = self.doQuery("SELECT id FROM jobhistory WHERE jobid=%s AND userid=%s AND printerid=%s" % (self.doQuote(jobid), self.doQuote(userid), self.doQuote(printerid))) |
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167 | try : |
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168 | return self.doParseResult(result)[0]["id"] |
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169 | except TypeError : # Not found |
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170 | return |
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171 | |
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172 | def getPrinterUsers(self, printerid) : |
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173 | """Returns the list of userids and usernames which uses a given printer.""" |
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174 | result = self.doQuery("SELECT DISTINCT id, username FROM users WHERE id IN (SELECT userid FROM userpquota WHERE printerid=%s) ORDER BY username" % self.doQuote(printerid)) |
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175 | result = self.doParseResult(result) |
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176 | if result is None : |
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177 | return [] |
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178 | else : |
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179 | return [(record["id"], record["username"]) for record in result] |
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180 | |
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181 | def getPrinterGroups(self, printerid) : |
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182 | """Returns the list of groups which uses a given printer.""" |
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183 | result = self.doQuery("SELECT DISTINCT id, groupname FROM groups WHERE id IN (SELECT groupid FROM grouppquota WHERE printerid=%s)" % self.doQuote(printerid)) |
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184 | result = self.doParseResult(result) |
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185 | if result is None : |
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186 | return [] |
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187 | else : |
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188 | return [(record["id"], record["groupname"]) for record in result] |
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189 | |
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190 | def getGroupMembersNames(self, groupname) : |
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191 | """Returns the list of user's names which are member of this group.""" |
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192 | groupid = self.getGroupId(groupname) |
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193 | if groupid is None : |
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194 | return [] |
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195 | else : |
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196 | result = self.doQuery("SELECT DISTINCT username FROM users WHERE id IN (SELECT userid FROM groupsmembers WHERE groupid=%s)" % self.doQuote(groupid)) |
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197 | return [record["username"] for record in (self.doParseResult(result) or [])] |
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198 | |
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199 | def getUserGroupsNames(self, userid) : |
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200 | """Returns the list of groups' names the user is a member of.""" |
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201 | result = self.doQuery("SELECT DISTINCT groupname FROM groups WHERE id IN (SELECT groupid FROM groupsmembers WHERE userid=%s)" % self.doQuote(userid)) |
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202 | return [record["groupname"] for record in (self.doParseResult(result) or [])] |
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203 | |
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204 | def addPrinter(self, printername) : |
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205 | """Adds a printer to the quota storage, returns its id.""" |
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206 | self.doQuery("INSERT INTO printers (printername) VALUES (%s)" % self.doQuote(printername)) |
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207 | return self.getPrinterId(printername) |
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208 | |
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209 | def addUser(self, username) : |
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210 | """Adds a user to the quota storage, returns its id.""" |
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211 | self.doQuery("INSERT INTO users (username) VALUES (%s)" % self.doQuote(username)) |
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212 | return self.getUserId(username) |
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213 | |
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214 | def addGroup(self, groupname) : |
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215 | """Adds a group to the quota storage, returns its id.""" |
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216 | self.doQuery("INSERT INTO groups (groupname) VALUES (%s)" % self.doQuote(groupname)) |
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217 | return self.getGroupId(groupname) |
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218 | |
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219 | def addUserPQuota(self, username, printerid) : |
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220 | """Initializes a user print quota on a printer, adds the user to the quota storage if needed.""" |
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221 | userid = self.getUserId(username) |
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222 | if userid is None : |
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223 | userid = self.addUser(username) |
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224 | uqexists = (self.getUserPQuota(userid, printerid) is not None) |
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225 | if not uqexists : |
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226 | self.doQuery("INSERT INTO userpquota (userid, printerid) VALUES (%s, %s)" % (self.doQuote(userid), self.doQuote(printerid))) |
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227 | return (userid, printerid) |
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228 | |
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229 | def addGroupPQuota(self, groupname, printerid) : |
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230 | """Initializes a group print quota on a printer, adds the group to the quota storage if needed.""" |
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231 | groupid = self.getGroupId(groupname) |
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232 | if groupid is None : |
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233 | groupid = self.addGroup(groupname) |
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234 | gqexists = (self.getGroupPQuota(groupid, printerid) is not None) |
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235 | if not gqexists : |
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236 | self.doQuery("INSERT INTO grouppquota (groupid, printerid) VALUES (%s, %s)" % (self.doQuote(groupid), self.doQuote(printerid))) |
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237 | return (groupid, printerid) |
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238 | |
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239 | def increaseUserBalance(self, userid, amount) : |
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240 | """Increases (or decreases) an user's account balance by a given amount.""" |
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241 | self.doQuery("UPDATE users SET balance=balance+(%s), lifetimepaid=lifetimepaid+(%s) WHERE id=%s" % (self.doQuote(amount), self.doQuote(amount), self.doQuote(userid))) |
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242 | |
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243 | def getUserBalance(self, userid) : |
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244 | """Returns the current account balance for a given user.""" |
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245 | result = self.doQuery("SELECT balance, lifetimepaid FROM users WHERE id=%s" % self.doQuote(userid)) |
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246 | try : |
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247 | result = self.doParseResult(result)[0] |
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248 | except TypeError : # Not found |
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249 | return |
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250 | else : |
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251 | return (result["balance"], result["lifetimepaid"]) |
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252 | |
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253 | def getGroupBalance(self, groupid) : |
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254 | """Returns the current account balance for a given group, as the sum of each of its users' account balance.""" |
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255 | result = self.doQuery("SELECT SUM(balance) AS balance, SUM(lifetimepaid) AS lifetimepaid FROM users WHERE id in (SELECT userid FROM groupsmembers WHERE groupid=%s)" % self.doQuote(groupid)) |
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256 | try : |
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257 | result = self.doParseResult(result)[0] |
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258 | except TypeError : # Not found |
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259 | return |
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260 | else : |
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261 | return (result["balance"], result["lifetimepaid"]) |
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262 | |
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263 | def getUserLimitBy(self, userid) : |
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264 | """Returns the way in which user printing is limited.""" |
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265 | result = self.doQuery("SELECT limitby FROM users WHERE id=%s" % self.doQuote(userid)) |
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266 | try : |
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267 | return self.doParseResult(result)[0]["limitby"] |
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268 | except TypeError : # Not found |
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269 | return |
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270 | |
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271 | def getGroupLimitBy(self, groupid) : |
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272 | """Returns the way in which group printing is limited.""" |
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273 | result = self.doQuery("SELECT limitby FROM groups WHERE id=%s" % self.doQuote(groupid)) |
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274 | try : |
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275 | return self.doParseResult(result)[0]["limitby"] |
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276 | except TypeError : # Not found |
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277 | return |
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278 | |
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279 | def setUserBalance(self, userid, balance) : |
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280 | """Sets the account balance for a given user to a fixed value.""" |
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281 | (current, lifetimepaid) = self.getUserBalance(userid) |
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282 | difference = balance - current |
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283 | self.increaseUserBalance(userid, difference) |
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284 | |
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285 | def limitUserBy(self, userid, limitby) : |
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286 | """Limits a given user based either on print quota or on account balance.""" |
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287 | self.doQuery("UPDATE users SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(userid))) |
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288 | |
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289 | def limitGroupBy(self, groupid, limitby) : |
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290 | """Limits a given group based either on print quota or on sum of its users' account balances.""" |
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291 | self.doQuery("UPDATE groups SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(groupid))) |
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292 | |
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293 | def setUserPQuota(self, userid, printerid, softlimit, hardlimit) : |
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294 | """Sets soft and hard limits for a user quota on a specific printer given (userid, printerid).""" |
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295 | self.doQuery("UPDATE userpquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE userid=%s AND printerid=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(userid), self.doQuote(printerid))) |
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296 | |
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297 | def setGroupPQuota(self, groupid, printerid, softlimit, hardlimit) : |
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298 | """Sets soft and hard limits for a group quota on a specific printer given (groupid, printerid).""" |
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299 | self.doQuery("UPDATE grouppquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE groupid=%s AND printerid=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(groupid), self.doQuote(printerid))) |
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300 | |
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301 | def resetUserPQuota(self, userid, printerid) : |
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302 | """Resets the page counter to zero for a user on a printer. Life time page counter is kept unchanged.""" |
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303 | self.doQuery("UPDATE userpquota SET pagecounter=0, datelimit=NULL WHERE userid=%s AND printerid=%s" % (self.doQuote(userid), self.doQuote(printerid))) |
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304 | |
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305 | def resetGroupPQuota(self, groupid, printerid) : |
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306 | """Resets the page counter to zero for a group on a printer. Life time page counter is kept unchanged.""" |
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307 | self.doQuery("UPDATE grouppquota SET pagecounter=0, datelimit=NULL WHERE groupid=%s AND printerid=%s" % (self.doQuote(groupid), self.doQuote(printerid))) |
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308 | |
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309 | def updateUserPQuota(self, userid, printerid, pagecount) : |
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310 | """Updates the used user Quota information given (userid, printerid) and a job size in pages.""" |
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311 | jobprice = self.computePrinterJobPrice(printerid, pagecount) |
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312 | queries = [] |
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313 | queries.append("UPDATE userpquota SET lifepagecounter=lifepagecounter+(%s), pagecounter=pagecounter+(%s) WHERE userid=%s AND printerid=%s" % (self.doQuote(pagecount), self.doQuote(pagecount), self.doQuote(userid), self.doQuote(printerid))) |
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314 | queries.append("UPDATE users SET balance=balance-(%s) WHERE id=%s" % (self.doQuote(jobprice), self.doQuote(userid))) |
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315 | self.doQuery(queries) |
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316 | |
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317 | def getUserPQuota(self, userid, printerid) : |
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318 | """Returns the Print Quota information for a given (userid, printerid).""" |
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319 | result = self.doQuery("SELECT lifepagecounter, pagecounter, softlimit, hardlimit, datelimit FROM userpquota WHERE userid=%s AND printerid=%s" % (self.doQuote(userid), self.doQuote(printerid))) |
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320 | try : |
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321 | return self.doParseResult(result)[0] |
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322 | except TypeError : # Not found |
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323 | return |
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324 | |
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325 | def getGroupPQuota(self, groupid, printerid) : |
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326 | """Returns the Print Quota information for a given (groupid, printerid).""" |
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327 | result = self.doQuery("SELECT softlimit, hardlimit, datelimit FROM grouppquota WHERE groupid=%s AND printerid=%s" % (self.doQuote(groupid), self.doQuote(printerid))) |
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328 | try : |
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329 | grouppquota = self.doParseResult(result)[0] |
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330 | except TypeError : |
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331 | return |
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332 | else : |
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333 | result = self.doQuery("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(printerid), self.doQuote(groupid))) |
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334 | try : |
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335 | result = self.doParseResult(result)[0] |
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336 | except TypeError : # Not found |
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337 | return |
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338 | else : |
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339 | grouppquota.update({"lifepagecounter": result["lifepagecounter"], "pagecounter": result["pagecounter"]}) |
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340 | return grouppquota |
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341 | |
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342 | def setUserDateLimit(self, userid, printerid, datelimit) : |
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343 | """Sets the limit date for a soft limit to become an hard one given (userid, printerid).""" |
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344 | self.doQuery("UPDATE userpquota SET datelimit=%s::TIMESTAMP WHERE userid=%s AND printerid=%s" % (self.doQuote("%04i-%02i-%02i %02i:%02i:%02i" % (datelimit.year, datelimit.month, datelimit.day, datelimit.hour, datelimit.minute, datelimit.second)), self.doQuote(userid), self.doQuote(printerid))) |
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345 | |
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346 | def setGroupDateLimit(self, groupid, printerid, datelimit) : |
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347 | """Sets the limit date for a soft limit to become an hard one given (groupid, printerid).""" |
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348 | self.doQuery("UPDATE grouppquota SET datelimit=%s::TIMESTAMP WHERE groupid=%s AND printerid=%s" % (self.doQuote("%04i-%02i-%02i %02i:%02i:%02i" % (datelimit.year, datelimit.month, datelimit.day, datelimit.hour, datelimit.minute, datelimit.second)), self.doQuote(groupid), self.doQuote(printerid))) |
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349 | |
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350 | def addJobToHistory(self, jobid, userid, printerid, pagecounter, action, jobsize=None) : |
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351 | """Adds a job to the history: (jobid, userid, printerid, last page counter taken from requester).""" |
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352 | self.doQuery("INSERT INTO jobhistory (jobid, userid, printerid, pagecounter, action, jobsize) VALUES (%s, %s, %s, %s, %s, %s)" % (self.doQuote(jobid), self.doQuote(userid), self.doQuote(printerid), self.doQuote(pagecounter), self.doQuote(action), self.doQuote(jobsize))) |
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353 | return self.getJobHistoryId(jobid, userid, printerid) # in case jobid is not sufficient |
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354 | |
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355 | def updateJobSizeInHistory(self, historyid, jobsize) : |
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356 | """Updates a job size in the history given the history line's id.""" |
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357 | self.doQuery("UPDATE jobhistory SET jobsize=%s WHERE id=%s" % (self.doQuote(jobsize), self.doQuote(historyid))) |
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358 | |
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359 | def getPrinterPageCounter(self, printerid) : |
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360 | """Returns the last page counter value for a printer given its id, also returns last username, last jobid and history line id.""" |
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361 | result = self.doQuery("SELECT jobhistory.id, jobid, userid, username, pagecounter, jobsize FROM jobhistory, users WHERE printerid=%s AND userid=users.id ORDER BY jobdate DESC LIMIT 1" % self.doQuote(printerid)) |
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362 | try : |
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363 | return self.doParseResult(result)[0] |
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364 | except TypeError : # Not found |
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365 | return |
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366 | |
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367 | def addUserToGroup(self, userid, groupid) : |
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368 | """Adds an user to a group.""" |
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369 | result = self.doQuery("SELECT COUNT(*) AS mexists FROM groupsmembers WHERE groupid=%s AND userid=%s" % (self.doQuote(groupid), self.doQuote(userid))) |
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370 | try : |
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371 | mexists = self.doParseResult(result)[0]["mexists"] |
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372 | except TypeError : |
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373 | mexists = 0 |
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374 | if not mexists : |
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375 | self.doQuery("INSERT INTO groupsmembers (groupid, userid) VALUES (%s, %s)" % (self.doQuote(groupid), self.doQuote(userid))) |
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376 | |
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377 | def deleteUser(self, userid) : |
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378 | """Completely deletes an user from the Quota Storage.""" |
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379 | queries = [] |
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380 | queries.append("DELETE FROM groupsmembers WHERE userid=%s" % self.doQuote(userid)) |
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381 | queries.append("DELETE FROM jobhistory WHERE userid=%s" % self.doQuote(userid)) |
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382 | queries.append("DELETE FROM userpquota WHERE userid=%s" % self.doQuote(userid)) |
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383 | queries.append("DELETE FROM users WHERE id=%s" % self.doQuote(userid)) |
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384 | # TODO : What should we do if we delete the last person who used a given printer ? |
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385 | self.doQuery(queries) |
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386 | |
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387 | def deleteGroup(self, groupid) : |
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388 | """Completely deletes an user from the Quota Storage.""" |
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389 | queries = [] |
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390 | queries.append("DELETE FROM groupsmembers WHERE groupid=%s" % self.doQuote(groupid)) |
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391 | queries.append("DELETE FROM grouppquota WHERE groupid=%s" % self.doQuote(groupid)) |
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392 | queries.append("DELETE FROM groups WHERE id=%s" % self.doQuote(groupid)) |
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393 | self.doQuery(queries) |
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394 | |
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395 | def computePrinterJobPrice(self, printerid, jobsize) : |
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396 | """Returns the price for a job on a given printer.""" |
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397 | # TODO : create a base class with things like this |
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398 | prices = self.getPrinterPrices(printerid) |
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399 | if prices is None : |
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400 | perpage = perjob = 0.0 |
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401 | else : |
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402 | (perpage, perjob) = prices |
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403 | return perjob + (perpage * jobsize) |
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404 | |
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