1 | #! /usr/bin/env python |
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2 | # -*- coding: ISO-8859-15 -*- |
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3 | |
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4 | # PyKota Printers Manager |
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5 | # |
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6 | # PyKota - Print Quotas for CUPS and LPRng |
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7 | # |
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8 | # (c) 2003, 2004, 2005, 2006 Jerome Alet <alet@librelogiciel.com> |
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9 | # This program is free software; you can redistribute it and/or modify |
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10 | # it under the terms of the GNU General Public License as published by |
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11 | # the Free Software Foundation; either version 2 of the License, or |
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12 | # (at your option) any later version. |
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13 | # |
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14 | # This program is distributed in the hope that it will be useful, |
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15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | # GNU General Public License for more details. |
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18 | # |
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19 | # You should have received a copy of the GNU General Public License |
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20 | # along with this program; if not, write to the Free Software |
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21 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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22 | # |
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23 | # $Id$ |
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24 | # |
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25 | # |
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26 | |
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27 | import os |
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28 | import sys |
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29 | import pwd |
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30 | |
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31 | from pykota.tool import Percent, PyKotaTool, PyKotaCommandLineError, crashed, N_ |
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32 | from pykota.storage import StoragePrinter |
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33 | |
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34 | from pkipplib import pkipplib |
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35 | |
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36 | __doc__ = N_("""pkprinters v%(__version__)s (c) %(__years__)s %(__author__)s |
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37 | |
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38 | A Printers Manager for PyKota. |
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39 | |
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40 | command line usage : |
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41 | |
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42 | pkprinters [options] printer1 printer2 printer3 ... printerN |
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43 | |
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44 | options : |
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45 | |
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46 | -v | --version Prints pkprinters's version number then exits. |
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47 | -h | --help Prints this message then exits. |
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48 | |
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49 | -a | --add Adds printers if they don't exist on the Quota |
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50 | Storage Server. If they exist, they are modified |
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51 | unless -s|--skipexisting is also used. |
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52 | |
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53 | -d | --delete Deletes printers from the quota storage. |
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54 | |
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55 | -D | --description d Adds a textual description to printers. |
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56 | |
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57 | -C | --cups Also modifies the DeviceURI in CUPS' printers.conf |
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58 | |
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59 | -c | --charge p[,j] Sets the price per page and per job to charge. |
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60 | Job price is optional. |
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61 | If both are to be set, separate them with a comma. |
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62 | Floating point and negative values are allowed. |
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63 | |
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64 | -g | --groups pg1[,pg2...] Adds or Remove the printer(s) to the printer |
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65 | groups pg1, pg2, etc... which must already exist. |
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66 | A printer group is just like a normal printer, |
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67 | only that it is usually unknown from the printing |
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68 | system. Create printer groups exactly the same |
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69 | way that you create printers, then add other |
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70 | printers to them with this option. |
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71 | Accounting is done on a printer and on all |
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72 | the printer groups it belongs to, quota checking |
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73 | is done on a printer and on all the printer groups |
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74 | it belongs to. |
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75 | If the --remove option below is not used, the |
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76 | default action is to add printers to the specified |
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77 | printer groups. |
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78 | |
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79 | -l | --list List informations about the printer(s) and the |
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80 | printers groups it is a member of. |
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81 | |
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82 | -r | --remove In combination with the --groups option above, |
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83 | remove printers from the specified printers groups. |
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84 | |
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85 | -s | --skipexisting In combination with the --add option above, tells |
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86 | pkprinters to not modify existing printers. |
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87 | |
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88 | -m | --maxjobsize s Sets the maximum job size allowed on the printer |
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89 | to s pages. |
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90 | |
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91 | -p | --passthrough Activate passthrough mode for the printer. In this |
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92 | mode, users are allowed to print without any impact |
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93 | on their quota or account balance. |
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94 | |
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95 | -n | --nopassthrough Deactivate passthrough mode for the printer. |
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96 | Without -p or -n, printers are created in |
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97 | normal mode, i.e. no passthrough. |
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98 | |
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99 | printer1 through printerN can contain wildcards if the --add option |
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100 | is not set. |
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101 | |
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102 | examples : |
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103 | |
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104 | $ pkprinters --add -D "HP Printer" --charge 0.05,0.1 hp2100 hp2200 hp8000 |
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105 | |
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106 | Will create three printers named hp2100, hp2200 and hp8000. |
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107 | Their price per page will be set at 0.05 unit, and their price |
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108 | per job will be set at 0.1 unit. Units are in your own currency, |
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109 | or whatever you want them to mean. |
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110 | All of their descriptions will be set to the string "HP Printer". |
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111 | If any of these printers already exists, it will also be modified |
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112 | unless the -s|--skipexisting command line option is also used. |
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113 | |
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114 | $ pkprinters --delete "*" |
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115 | |
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116 | This will completely delete all printers and associated quota information, |
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117 | as well as their job history. USE WITH CARE ! |
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118 | |
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119 | $ pkprinters --groups Laser,HP "hp*" |
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120 | |
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121 | This will put all printers which name matches "hp*" into printers groups |
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122 | Laser and HP, which MUST already exist. |
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123 | |
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124 | $ pkprinters --groups LexMark --remove hp2200 |
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125 | |
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126 | This will remove the hp2200 printer from the LexMark printer group. |
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127 | """) |
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128 | |
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129 | class PKPrinters(PyKotaTool) : |
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130 | """A class for a printers manager.""" |
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131 | def modifyPrinter(self, printer, charges, perpage, perjob, description, passthrough, nopassthrough, maxjobsize) : |
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132 | if charges : |
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133 | printer.setPrices(perpage, perjob) |
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134 | if description is not None : # NB : "" is allowed ! |
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135 | printer.setDescription(description) |
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136 | if nopassthrough : |
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137 | printer.setPassThrough(False) |
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138 | if passthrough : |
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139 | printer.setPassThrough(True) |
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140 | if maxjobsize is not None : |
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141 | printer.setMaxJobSize(maxjobsize) |
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142 | |
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143 | def managePrintersGroups(self, pgroups, printer, remove) : |
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144 | """Manage printer group membership.""" |
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145 | for pgroup in pgroups : |
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146 | if remove : |
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147 | pgroup.delPrinterFromGroup(printer) |
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148 | else : |
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149 | pgroup.addPrinterToGroup(printer) |
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150 | |
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151 | def getPrinterDeviceURI(self, printername) : |
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152 | """Returns the Device URI attribute for a particular printer.""" |
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153 | if not printername : |
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154 | return "" |
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155 | cups = pkipplib.CUPS() |
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156 | req = cups.newRequest(pkipplib.IPP_GET_PRINTER_ATTRIBUTES) |
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157 | req.operation["printer-uri"] = ("uri", cups.identifierToURI("printers", printername)) |
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158 | try : |
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159 | return cups.doRequest(req).printer["device-uri"][0][1] |
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160 | except : |
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161 | return "" |
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162 | |
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163 | def isPrinterCaptured(self, printername=None, deviceuri=None) : |
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164 | """Returns True if the printer is already redirected through PyKota's backend, else False.""" |
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165 | if (deviceuri or self.getPrinterDeviceURI(printername)).find("cupspykota:") != -1 : |
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166 | return True |
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167 | else : |
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168 | return False |
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169 | |
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170 | def reroutePrinterThroughPyKota(self, printer) : |
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171 | """Reroutes a CUPS printer through PyKota.""" |
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172 | uri = self.getPrinterDeviceURI(printer.Name) |
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173 | if not self.isPrinterCaptured(deviceuri=uri) : |
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174 | newuri = "cupspykota://%s" % uri |
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175 | self.regainPriv() # to avoid having to enter password. |
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176 | os.system('lpadmin -p "%s" -v "%s"' % (printer.Name, newuri)) |
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177 | self.logdebug("Printer %s rerouted to %s" % (printer.Name, newuri)) |
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178 | self.dropPriv() |
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179 | |
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180 | def deroutePrinterFromPyKota(self, printer) : |
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181 | """Deroutes a PyKota printer through CUPS only.""" |
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182 | uri = self.getPrinterDeviceURI(printer.Name) |
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183 | if self.isPrinterCaptured(deviceuri=uri) : |
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184 | newuri = uri.replace("cupspykota:", "") |
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185 | if newuri.startswith("//") : |
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186 | newuri = newuri[2:] |
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187 | self.regainPriv() # to avoid having to enter password. |
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188 | os.system('lpadmin -p "%s" -v "%s"' % (printer.Name, newuri)) |
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189 | self.logdebug("Printer %s rerouted to %s" % (printer.Name, newuri)) |
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190 | self.dropPriv() |
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191 | |
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192 | def main(self, names, options) : |
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193 | """Manage printers.""" |
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194 | if (not self.config.isAdmin) and (not options["list"]) : |
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195 | raise PyKotaCommandLineError, "%s : %s" % (pwd.getpwuid(os.geteuid())[0], _("You're not allowed to use this command.")) |
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196 | |
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197 | docups = options["cups"] |
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198 | |
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199 | if not options["list"] : |
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200 | percent = Percent(self) |
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201 | |
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202 | if not options["add"] : |
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203 | if not options["list"] : |
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204 | percent.display("%s..." % _("Extracting datas")) |
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205 | if not names : # NB : can't happen for --delete because it's catched earlier |
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206 | names = ["*"] |
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207 | printers = self.storage.getMatchingPrinters(",".join(names)) |
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208 | if not printers : |
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209 | if not options["list"] : |
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210 | percent.display("\n") |
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211 | raise PyKotaCommandLineError, _("There's no printer matching %s") % " ".join(names) |
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212 | if not options["list"] : |
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213 | percent.setSize(len(printers)) |
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214 | |
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215 | if options["list"] : |
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216 | for printer in printers : |
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217 | parents = ", ".join([p.Name for p in self.storage.getParentPrinters(printer)]) |
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218 | print "%s [%s] (%s + #*%s)" % \ |
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219 | (printer.Name, printer.Description, printer.PricePerJob, \ |
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220 | printer.PricePerPage) |
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221 | print " %s" % (_("Passthrough mode : %s") % ((printer.PassThrough and _("ON")) or _("OFF"))) |
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222 | print " %s" % (_("Maximum job size : %s") % ((printer.MaxJobSize and (_("%s pages") % printer.MaxJobSize)) or _("Unlimited"))) |
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223 | print " %s" % (_("Routed through PyKota : %s") % ((self.isPrinterCaptured(printer.Name) and _("YES")) or _("NO"))) |
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224 | if parents : |
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225 | print " %s %s" % (_("in"), parents) |
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226 | print |
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227 | elif options["delete"] : |
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228 | percent.display("\n%s..." % _("Deletion")) |
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229 | self.storage.deleteManyPrinters(printers) |
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230 | percent.display("\n") |
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231 | if docups : |
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232 | percent.display("%s...\n" % _("Rerouting printers to CUPS")) |
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233 | for printer in printers : |
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234 | self.deroutePrinterFromPyKota(printer) |
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235 | percent.oneMore() |
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236 | else : |
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237 | if options["groups"] : |
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238 | printersgroups = self.storage.getMatchingPrinters(options["groups"]) |
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239 | if not printersgroups : |
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240 | raise PyKotaCommandLineError, _("There's no printer matching %s") % " ".join(options["groups"].split(',')) |
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241 | else : |
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242 | printersgroups = [] |
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243 | |
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244 | if options["charge"] : |
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245 | try : |
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246 | charges = [float(part) for part in options["charge"].split(',', 1)] |
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247 | except ValueError : |
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248 | raise PyKotaCommandLineError, _("Invalid charge amount value %s") % options["charge"] |
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249 | else : |
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250 | if len(charges) > 2 : |
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251 | charges = charges[:2] |
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252 | if len(charges) != 2 : |
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253 | charges = [charges[0], None] |
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254 | (perpage, perjob) = charges |
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255 | else : |
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256 | charges = perpage = perjob = None |
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257 | |
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258 | if options["maxjobsize"] : |
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259 | try : |
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260 | maxjobsize = int(options["maxjobsize"]) |
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261 | if maxjobsize < 0 : |
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262 | raise ValueError |
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263 | except ValueError : |
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264 | raise PyKotaCommandLineError, _("Invalid maximum job size value %s") % options["maxjobsize"] |
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265 | else : |
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266 | maxjobsize = None |
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267 | |
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268 | description = options["description"] |
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269 | if description : |
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270 | description = description.strip() |
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271 | |
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272 | nopassthrough = options["nopassthrough"] |
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273 | passthrough = options["passthrough"] |
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274 | remove = options["remove"] |
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275 | skipexisting = options["skipexisting"] |
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276 | self.storage.beginTransaction() |
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277 | try : |
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278 | if options["add"] : |
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279 | percent.display("%s...\n" % _("Creation")) |
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280 | percent.setSize(len(names)) |
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281 | for pname in names : |
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282 | if self.isValidName(pname) : |
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283 | printer = StoragePrinter(self.storage, pname) |
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284 | self.modifyPrinter(printer, charges, perpage, perjob, \ |
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285 | description, passthrough, \ |
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286 | nopassthrough, maxjobsize) |
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287 | oldprinter = self.storage.addPrinter(printer) |
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288 | |
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289 | if docups : |
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290 | self.reroutePrinterThroughPyKota(printer) |
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291 | |
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292 | if oldprinter is not None : |
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293 | if skipexisting : |
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294 | self.logdebug(_("Printer %s already exists, skipping.") % pname) |
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295 | else : |
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296 | self.logdebug(_("Printer %s already exists, will be modified.") % pname) |
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297 | self.modifyPrinter(oldprinter, charges, \ |
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298 | perpage, perjob, description, \ |
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299 | passthrough, nopassthrough, \ |
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300 | maxjobsize) |
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301 | oldprinter.save() |
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302 | self.managePrintersGroups(printersgroups, oldprinter, remove) |
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303 | elif printersgroups : |
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304 | self.managePrintersGroups(printersgroups, \ |
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305 | self.storage.getPrinter(pname), \ |
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306 | remove) |
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307 | else : |
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308 | raise PyKotaCommandLineError, _("Invalid printer name %s") % pname |
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309 | percent.oneMore() |
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310 | else : |
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311 | percent.display("\n%s...\n" % _("Modification")) |
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312 | for printer in printers : |
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313 | self.modifyPrinter(printer, charges, perpage, perjob, \ |
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314 | description, passthrough, \ |
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315 | nopassthrough, maxjobsize) |
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316 | printer.save() |
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317 | self.managePrintersGroups(printersgroups, printer, remove) |
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318 | if docups : |
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319 | self.reroutePrinterThroughPyKota(printer) |
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320 | percent.oneMore() |
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321 | except : |
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322 | self.storage.rollbackTransaction() |
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323 | raise |
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324 | else : |
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325 | self.storage.commitTransaction() |
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326 | |
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327 | if not options["list"] : |
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328 | percent.done() |
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329 | |
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330 | if __name__ == "__main__" : |
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331 | retcode = 0 |
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332 | try : |
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333 | short_options = "hvaCc:D:dg:lrsnpm:" |
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334 | long_options = ["help", "version", "add", "cups", "charge=", "description=", \ |
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335 | "delete", "groups=", "list", "remove", \ |
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336 | "skipexisting", "passthrough", "nopassthrough", \ |
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337 | "maxjobsize="] |
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338 | |
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339 | # Initializes the command line tool |
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340 | manager = PKPrinters(doc=__doc__) |
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341 | manager.deferredInit() |
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342 | |
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343 | # parse and checks the command line |
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344 | (options, args) = manager.parseCommandline(sys.argv[1:], short_options, long_options) |
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345 | |
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346 | # sets long options |
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347 | options["help"] = options["h"] or options["help"] |
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348 | options["version"] = options["v"] or options["version"] |
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349 | options["add"] = options["a"] or options["add"] |
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350 | options["cups"] = options["C"] or options["cups"] |
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351 | options["charge"] = options["c"] or options["charge"] |
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352 | options["description"] = options["D"] or options["description"] |
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353 | options["delete"] = options["d"] or options["delete"] |
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354 | options["groups"] = options["g"] or options["groups"] |
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355 | options["list"] = options["l"] or options["list"] |
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356 | options["remove"] = options["r"] or options["remove"] |
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357 | options["skipexisting"] = options["s"] or options["skipexisting"] |
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358 | options["maxjobsize"] = options["m"] or options["maxjobsize"] |
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359 | options["passthrough"] = options["p"] or options["passthrough"] |
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360 | options["nopassthrough"] = options["n"] or options["nopassthrough"] |
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361 | |
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362 | if options["help"] : |
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363 | manager.display_usage_and_quit() |
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364 | elif options["version"] : |
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365 | manager.display_version_and_quit() |
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366 | elif (options["delete"] and (options["add"] or options["groups"] or options["charge"] or options["remove"] or options["description"])) \ |
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367 | or (options["skipexisting"] and not options["add"]) \ |
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368 | or (options["list"] and (options["add"] or options["delete"] or options["groups"] or options["charge"] or options["remove"] or options["description"])) \ |
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369 | or (options["passthrough"] and options["nopassthrough"]) \ |
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370 | or (options["remove"] and options["add"]) : |
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371 | raise PyKotaCommandLineError, _("incompatible options, see help.") |
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372 | elif options["remove"] and not options["groups"] : |
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373 | raise PyKotaCommandLineError, _("You have to pass printer groups names on the command line") |
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374 | elif (not args) and (options["add"] or options["delete"]) : |
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375 | raise PyKotaCommandLineError, _("You have to pass printer names on the command line") |
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376 | else : |
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377 | retcode = manager.main(args, options) |
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378 | except KeyboardInterrupt : |
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379 | sys.stderr.write("\nInterrupted with Ctrl+C !\n") |
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380 | retcode = -3 |
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381 | except PyKotaCommandLineError, msg : |
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382 | sys.stderr.write("%s : %s\n" % (sys.argv[0], msg)) |
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383 | retcode = -2 |
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384 | except SystemExit : |
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385 | pass |
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386 | except : |
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387 | try : |
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388 | manager.crashed("pkprinters failed") |
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389 | except : |
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390 | crashed("pkprinters failed") |
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391 | retcode = -1 |
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392 | |
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393 | try : |
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394 | manager.storage.close() |
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395 | except (TypeError, NameError, AttributeError) : |
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396 | pass |
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397 | |
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398 | sys.exit(retcode) |
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