1 | #! /usr/bin/env python |
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2 | |
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3 | # PyKota - Print Quotas for CUPS |
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4 | # |
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5 | # (c) 2003 Jerome Alet <alet@librelogiciel.com> |
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6 | # You're welcome to redistribute this software under the |
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7 | # terms of the GNU General Public Licence version 2.0 |
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8 | # or, at your option, any higher version. |
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9 | # |
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10 | # You can read the complete GNU GPL in the file COPYING |
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11 | # which should come along with this software, or visit |
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12 | # the Free Software Foundation's WEB site http://www.fsf.org |
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13 | # |
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14 | # $Id$ |
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15 | # |
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16 | # $Log$ |
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17 | # Revision 1.8 2003/02/06 09:19:02 jalet |
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18 | # More robust behavior (hopefully) when the user or printer is not managed |
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19 | # correctly by the Quota System : e.g. cupsFilter added in ppd file, but |
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20 | # printer and/or user not 'yet?' in storage. |
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21 | # |
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22 | # Revision 1.7 2003/02/06 00:00:45 jalet |
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23 | # Now includes the printer name in email messages |
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24 | # |
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25 | # Revision 1.6 2003/02/05 23:55:02 jalet |
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26 | # Cleaner email messages |
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27 | # |
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28 | # Revision 1.5 2003/02/05 23:45:09 jalet |
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29 | # Better DateTime manipulation wrt grace delay |
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30 | # |
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31 | # Revision 1.4 2003/02/05 23:26:22 jalet |
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32 | # Incorrect handling of grace delay |
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33 | # |
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34 | # Revision 1.3 2003/02/05 22:16:20 jalet |
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35 | # DEVICE_URI is undefined outside of CUPS, i.e. for normal command line tools |
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36 | # |
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37 | # Revision 1.2 2003/02/05 22:10:29 jalet |
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38 | # Typos |
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39 | # |
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40 | # Revision 1.1 2003/02/05 21:28:17 jalet |
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41 | # Initial import into CVS |
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42 | # |
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43 | # |
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44 | # |
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45 | |
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46 | import sys |
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47 | import os |
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48 | import smtplib |
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49 | |
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50 | from mx import DateTime |
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51 | |
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52 | from pykota import config |
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53 | from pykota import storage |
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54 | from pykota import logger |
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55 | |
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56 | class PyKotaToolError(Exception): |
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57 | """An exception for PyKota config related stuff.""" |
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58 | def __init__(self, message = ""): |
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59 | self.message = message |
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60 | Exception.__init__(self, message) |
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61 | def __repr__(self): |
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62 | return self.message |
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63 | __str__ = __repr__ |
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64 | |
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65 | class PyKotaTool : |
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66 | """Base class for all PyKota command line tools.""" |
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67 | def __init__(self, isfilter=0) : |
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68 | """Initializes the command line tool.""" |
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69 | self.config = config.PyKotaConfig(os.environ.get("CUPS_SERVERROOT", "/etc/cups")) |
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70 | self.logger = logger.openLogger(self.config) |
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71 | self.storage = storage.openConnection(self.config, asadmin=(not isfilter)) |
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72 | self.printername = os.environ.get("PRINTER", None) |
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73 | self.smtpserver = self.config.getSMTPServer() |
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74 | self.admin = self.config.getAdmin() |
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75 | self.adminmail = self.config.getAdminMail() |
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76 | |
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77 | def sendMessage(self, touser, fullmessage) : |
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78 | """Sends an email message containing headers to some user.""" |
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79 | if "@" not in touser : |
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80 | touser = "%s@%s" % (touser, self.smtpserver) |
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81 | server = smtplib.SMTP(self.smtpserver) |
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82 | server.sendmail(self.adminmail, [touser], fullmessage) |
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83 | server.quit() |
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84 | |
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85 | def sendMessageToUser(self, username, subject, message) : |
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86 | """Sends an email message to a user.""" |
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87 | message += "\n\nPlease contact your system administrator :\n\n\t%s - <%s>\n" % (self.admin, self.adminmail) |
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88 | self.sendMessage(username, "Subject: %s\n\n%s" % (subject, message)) |
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89 | |
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90 | def sendMessageToAdmin(self, subject, message) : |
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91 | """Sends an email message to the Print Quota administrator.""" |
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92 | self.sendMessage(self.adminmail, "Subject: %s\n\n%s" % (subject, message)) |
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93 | |
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94 | def checkUserPQuota(self, username, printername) : |
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95 | """Checks the user quota on a printer and deny or accept the job.""" |
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96 | now = DateTime.now() |
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97 | quota = self.storage.getUserPQuota(username, printername) |
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98 | if quota is None : |
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99 | # Unknown user or printer or combination |
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100 | policy = self.config.getPrinterPolicy(printername) |
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101 | if policy in [None, "ALLOW"] : |
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102 | action = "ALLOW" |
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103 | else : |
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104 | action = "DENY" |
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105 | self.logger.log_message("Unable to match user %s on printer %s, applying default policy (%s)" % (username, printername, action), "warn") |
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106 | return (action, None, None) |
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107 | else : |
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108 | pagecounter = quota["pagecounter"] |
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109 | softlimit = quota["softlimit"] |
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110 | hardlimit = quota["hardlimit"] |
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111 | datelimit = quota["datelimit"] |
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112 | if datelimit is not None : |
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113 | datelimit = DateTime.ISO.ParseDateTime(datelimit) |
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114 | if softlimit is not None : |
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115 | if pagecounter < softlimit : |
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116 | action = "ALLOW" |
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117 | elif hardlimit is not None : |
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118 | gracedelay = self.config.getGraceDelay() |
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119 | if softlimit <= pagecounter < hardlimit : |
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120 | if datelimit is None : |
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121 | datelimit = now + gracedelay |
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122 | self.storage.doQuery("UPDATE userpquota SET datelimit=%s::DATETIME 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(self.getUserId(username)), self.doQuote(self.getPrinterId(printername)))) |
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123 | if (now + gracedelay) < datelimit : |
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124 | action = "WARN" |
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125 | else : |
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126 | action = "DENY" |
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127 | else : |
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128 | action = "DENY" |
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129 | else : |
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130 | action = "DENY" |
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131 | else : |
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132 | action = "ALLOW" |
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133 | return (action, (hardlimit - pagecounter), datelimit) |
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134 | |
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135 | def warnQuotaPrinter(self, username) : |
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136 | """Checks a user quota and send him a message if quota is exceeded on current printer.""" |
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137 | (action, grace, gracedate) = self.checkUserPQuota(username, self.printername) |
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138 | if action == "DENY" : |
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139 | if (grace is not None) and (gracedate is not None) : |
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140 | # only when both user and printer are known |
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141 | adminmessage = "Print Quota exceeded for user %s on printer %s" % (username, self.printername) |
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142 | self.logger.log_message(adminmessage) |
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143 | self.sendMessageToUser(username, "Print Quota Exceeded", "You are not allowed to print anymore because\nyour Print Quota is exceeded on printer %s." % self.printername) |
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144 | self.sendMessageToAdmin("Print Quota", adminmessage) |
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145 | elif action == "WARN" : |
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146 | adminmessage = "Print Quota soft limit exceeded for user %s on printer %s" % (username, self.printername) |
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147 | self.logger.log_message(adminmessage) |
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148 | self.sendMessageToUser(username, "Print Quota Exceeded", "You will soon be forbidden to print anymore because\nyour Print Quota is almost reached on printer %s." % self.printername) |
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149 | self.sendMessageToAdmin("Print Quota", adminmessage) |
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150 | return action |
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151 | |
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