1 | #! /usr/bin/env python |
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2 | # -*- coding: utf-8 -*-*- |
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3 | # |
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4 | # PyKota : Print Quotas for CUPS |
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5 | # |
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6 | # (c) 2003, 2004, 2005, 2006, 2007, 2008 Jerome Alet <alet@librelogiciel.com> |
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7 | # This program is free software: you can redistribute it and/or modify |
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8 | # it under the terms of the GNU General Public License as published by |
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9 | # the Free Software Foundation, either version 3 of the License, or |
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10 | # (at your option) any later version. |
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11 | # |
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12 | # This program is distributed in the hope that it will be useful, |
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13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | # GNU General Public License for more details. |
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16 | # |
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17 | # You should have received a copy of the GNU General Public License |
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18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 | # |
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20 | # $Id$ |
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21 | # |
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22 | # |
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23 | |
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24 | """An On Screen Display (OSD) monitor for PyKota's end users.""" |
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25 | |
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26 | import sys |
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27 | import os |
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28 | import pwd |
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29 | import time |
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30 | |
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31 | try : |
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32 | import pyosd |
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33 | except ImportError : |
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34 | sys.stderr.write("Sorry ! You need both xosd and the Python OSD library (pyosd) for this software to work.\n") |
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35 | sys.exit(-1) |
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36 | |
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37 | import pykota.appinit |
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38 | from pykota.utils import run, loginvalidparam |
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39 | from pykota.commandline import PyKotaOptionParser |
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40 | from pykota.errors import PyKotaToolError, PyKotaCommandLineError |
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41 | from pykota.tool import PyKotaTool |
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42 | |
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43 | class PyKOSD(PyKotaTool) : |
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44 | """A class for an On Screen Display print quota monitor.""" |
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45 | def main(self, args, options) : |
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46 | """Main function starts here.""" |
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47 | savecolor = options.color |
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48 | loop = options.loop |
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49 | username = pwd.getpwuid(os.getuid())[0] |
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50 | while True : |
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51 | color = savecolor |
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52 | user = self.storage.getUserFromBackend(username) # don't use cache |
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53 | if not user.Exists : |
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54 | raise PyKotaCommandLineError, _("You %(username)s don't have a PyKota printing account. Please contact your administrator.") % locals() |
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55 | if user.LimitBy == "quota" : |
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56 | printers = self.storage.getMatchingPrinters("*") |
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57 | upquotas = [ self.storage.getUserPQuotaFromBackend(user, p) for p in printers ] # don't use cache |
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58 | nblines = len(upquotas) |
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59 | display = pyosd.osd(font=options.font, |
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60 | colour=color, |
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61 | timeout=options.duration, |
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62 | shadow=2, |
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63 | lines=nblines) |
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64 | for line in range(nblines) : |
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65 | upq = upquotas[line] |
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66 | if upq.HardLimit is None : |
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67 | if upq.SoftLimit is None : |
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68 | percent = "%i" % upq.PageCounter |
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69 | else : |
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70 | percent = "%i%%" % min((upq.PageCounter * 100) / upq.SoftLimit, 100) |
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71 | else : |
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72 | percent = "%i%%" % min((upq.PageCounter * 100) / upq.HardLimit, 100) |
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73 | printername = upq.Printer.Name |
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74 | msg = _("Pages used on %(printername)s : %(percent)s") % locals() |
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75 | display.display(msg.encode(self.charset, "replace"), |
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76 | type=pyosd.TYPE_STRING, |
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77 | line=line) |
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78 | elif user.LimitBy == "balance" : |
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79 | if user.AccountBalance <= self.config.getBalanceZero() : |
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80 | color = "#FF0000" |
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81 | display = pyosd.osd(font=options.font, |
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82 | colour=color, |
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83 | timeout=options.duration, |
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84 | shadow=2) |
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85 | balance = user.AccountBalance |
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86 | msg = _("PyKota Units left : %(balance).2f") % locals() |
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87 | display.display(msg.encode(self.charset, "replace"), |
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88 | type=pyosd.TYPE_STRING) |
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89 | elif user.LimitBy == "noprint" : |
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90 | display = pyosd.osd(font=options.font, |
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91 | colour="#FF0000", |
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92 | timeout=options.duration, |
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93 | shadow=2) |
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94 | msg = _("Printing denied.") |
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95 | display.display(msg.encode(self.charset, "replace"), |
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96 | type=pyosd.TYPE_STRING) |
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97 | elif user.LimitBy == "noquota" : |
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98 | display = pyosd.osd(font=options.font, |
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99 | colour=savecolor, |
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100 | timeout=options.duration, |
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101 | shadow=2) |
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102 | msg = _("Printing not limited.") |
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103 | display.display(msg.encode(self.charset, "replace"), |
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104 | type=pyosd.TYPE_STRING) |
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105 | elif user.LimitBy == "nochange" : |
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106 | display = pyosd.osd(font=options.font, |
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107 | colour=savecolor, |
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108 | timeout=options.duration, |
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109 | shadow=2) |
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110 | msg = _("Printing not limited, no accounting.") |
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111 | display.display(msg.encode(self.charset, "replace"), |
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112 | type=pyosd.TYPE_STRING) |
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113 | else : |
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114 | limitby = repr(user.LimitBy) |
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115 | raise PyKotaToolError, "Incorrect limitation factor %(limitby)s for user %(username)s" % locals() |
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116 | |
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117 | time.sleep(options.duration + 1) |
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118 | if loop : |
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119 | loop -= 1 |
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120 | if not loop : |
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121 | break |
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122 | time.sleep(options.sleep) |
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123 | |
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124 | return 0 |
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125 | |
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126 | if __name__ == "__main__" : |
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127 | def checkandset_positiveint(option, opt, value, optionparser) : |
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128 | """Checks and sets positive integer values.""" |
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129 | if value < 0 : |
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130 | loginvalidparam(opt, value, option.default) |
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131 | setattr(optionparser.values, option.dest, option.default) |
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132 | else : |
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133 | setattr(optionparser.values, option.dest, value) |
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134 | |
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135 | def checkandset_color(option, opt, value, optionparser) : |
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136 | """Checks and sets the color value.""" |
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137 | if not value.startswith("#") : |
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138 | value = "#%s" % value |
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139 | try : |
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140 | int(value[1:], 16) |
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141 | except (ValueError, TypeError) : |
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142 | error = True |
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143 | else : |
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144 | error = False |
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145 | if (len(value) != 7) or error : |
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146 | loginvalidparam(opt, value, option.default) |
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147 | setattr(optionparser.values, option.dest, option.default) |
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148 | else : |
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149 | setattr(optionparser.values, option.dest, value) |
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150 | |
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151 | parser = PyKotaOptionParser(description=_("An On Screen Display (OSD) monitor for PyKota's end users.")) |
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152 | parser.add_option("-c", "--color", "--colour", |
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153 | type="string", |
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154 | action="callback", |
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155 | callback=checkandset_color, |
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156 | dest="color", |
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157 | default="#00FF00", |
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158 | help=_("Set the color that will be used for display, as an hexadecimal triplet. For example #FF0000 is 100% red. The default is 100% green (%default).")) |
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159 | parser.add_option("-d", "--duration", |
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160 | type="int", |
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161 | action="callback", |
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162 | callback=checkandset_positiveint, |
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163 | dest="duration", |
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164 | default=3, |
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165 | help=_("Set the time in seconds during which the message will be displayed. Defaults to %default seconds.")) |
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166 | parser.add_option("-f", "--font", |
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167 | dest="font", |
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168 | default=pyosd.default_font, |
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169 | help=_("Set the font to use. Defaults to %default.")) |
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170 | parser.add_option("-l", "--loop", |
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171 | type="int", |
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172 | action="callback", |
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173 | callback=checkandset_positiveint, |
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174 | dest="loop", |
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175 | default=0, |
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176 | help=_("Set the number of times the info will be displayed. Defaults to %default, which means loop forever.")) |
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177 | parser.add_option("-s", "--sleep", |
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178 | type="int", |
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179 | action="callback", |
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180 | callback=checkandset_positiveint, |
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181 | dest="sleep", |
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182 | default=180, |
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183 | help=_("Set the sleeping time in seconds between two refreshes. Defaults to %default seconds.")) |
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184 | |
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185 | parser.add_example('-s 60 --loop 5', |
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186 | _("This would tell pykosd to display the current user's status for 3 seconds (the default) every 60 seconds, and exit after 5 iterations.")) |
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187 | |
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188 | run(parser, PyKOSD) |
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