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 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 | import sys |
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25 | import os |
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26 | import pwd |
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27 | import grp |
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28 | import socket |
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29 | import signal |
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30 | |
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31 | from pykota.tool import Tool, PyKotaToolError, PyKotaCommandLineError, crashed, N_ |
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32 | |
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33 | __doc__ = N_("""pkturnkey v%(__version__)s (c) %(__years__)s %(__author__)s |
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34 | |
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35 | A turn key tool for PyKota. When launched, this command will initialize |
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36 | PyKota's database with all existing print queues and some or all users. |
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37 | For now, no prices or limits are set, so printing is fully accounted |
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38 | for, but not limited. That's why you'll probably want to also use |
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39 | edpykota once the database has been initialized. |
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40 | |
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41 | command line usage : |
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42 | |
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43 | pkturnkey [options] [printqueues names] |
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44 | |
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45 | options : |
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46 | |
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47 | -v | --version Prints pkturnkey version number then exits. |
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48 | -h | --help Prints this message then exits. |
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49 | |
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50 | -c | --doconf Give hints about what to put into pykota.conf |
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51 | |
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52 | -d | --dousers Manages users accounts as well. |
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53 | |
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54 | -D | --dogroups Manages users groups as well. |
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55 | Implies -d | --dousers. |
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56 | |
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57 | -e | --emptygroups Includes empty groups. |
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58 | |
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59 | -f | --force Modifies the database instead of printing what |
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60 | it would do. |
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61 | |
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62 | -u | --uidmin uid Only adds users whose uid is greater than or equal to |
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63 | uid. You can pass an username there as well, and its |
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64 | uid will be used automatically. |
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65 | If not set, 0 will be used automatically. |
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66 | Implies -d | --dousers. |
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67 | |
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68 | -U | --uidmax uid Only adds users whose uid is lesser than or equal to |
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69 | uid. You can pass an username there as well, and its |
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70 | uid will be used automatically. |
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71 | If not set, a large value will be used automatically. |
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72 | Implies -d | --dousers. |
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73 | |
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74 | -g | --gidmin gid Only adds groups whose gid is greater than or equal to |
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75 | gid. You can pass a groupname there as well, and its |
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76 | gid will be used automatically. |
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77 | If not set, 0 will be used automatically. |
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78 | Implies -D | --dogroups. |
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79 | |
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80 | -G | --gidmax gid Only adds groups whose gid is lesser than or equal to |
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81 | gid. You can pass a groupname there as well, and its |
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82 | gid will be used automatically. |
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83 | If not set, a large value will be used automatically. |
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84 | Implies -D | --dogroups. |
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85 | |
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86 | examples : |
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87 | |
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88 | $ pkturnkey --dousers --uidmin jerome |
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89 | |
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90 | Will simulate the initialization of PyKota's database will all existing |
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91 | printers and print accounts for all users whose uid is greater than |
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92 | or equal to jerome's one. Won't manage any users group. |
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93 | |
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94 | To REALLY initialize the database instead of simulating it, please |
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95 | use the -f | --force command line switch. |
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96 | |
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97 | You can limit the initialization to only a subset of the existing |
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98 | printers, by passing their names at the end of the command line. |
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99 | """) |
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100 | |
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101 | class PKTurnKey(Tool) : |
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102 | """A class for an initialization tool.""" |
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103 | def listPrinters(self, namestomatch) : |
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104 | """Returns a list of tuples (queuename, deviceuri) for all existing print queues.""" |
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105 | self.printInfo("Extracting all print queues.") |
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106 | result = os.popen("lpstat -v", "r") |
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107 | lines = result.readlines() |
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108 | result.close() |
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109 | printers = [] |
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110 | for line in lines : |
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111 | (begin, end) = line.split(':', 1) |
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112 | deviceuri = end.strip() |
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113 | queuename = begin.split()[-1] |
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114 | if self.matchString(queuename, namestomatch) : |
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115 | printers.append((queuename, deviceuri)) |
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116 | else : |
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117 | self.printInfo("Print queue %s skipped." % queuename) |
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118 | return printers |
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119 | |
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120 | def listUsers(self, uidmin, uidmax) : |
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121 | """Returns a list of users whose uids are between uidmin and uidmax.""" |
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122 | self.printInfo("Extracting all users whose uid is between %s and %s." % (uidmin, uidmax)) |
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123 | return [(entry[0], entry[3]) for entry in pwd.getpwall() if uidmin <= entry[2] <= uidmax] |
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124 | |
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125 | def listGroups(self, gidmin, gidmax, users) : |
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126 | """Returns a list of groups whose gids are between gidmin and gidmax.""" |
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127 | self.printInfo("Extracting all groups whose gid is between %s and %s." % (gidmin, gidmax)) |
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128 | groups = [(entry[0], entry[2], entry[3]) for entry in grp.getgrall() if gidmin <= entry[2] <= gidmax] |
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129 | gidusers = {} |
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130 | usersgid = {} |
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131 | for u in users : |
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132 | gidusers.setdefault(u[1], []).append(u[0]) |
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133 | usersgid.setdefault(u[0], []).append(u[1]) |
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134 | |
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135 | membership = {} |
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136 | for g in range(len(groups)) : |
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137 | (gname, gid, members) = groups[g] |
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138 | newmembers = {} |
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139 | for m in members : |
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140 | newmembers[m] = m |
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141 | try : |
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142 | usernames = gidusers[gid] |
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143 | except KeyError : |
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144 | pass |
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145 | else : |
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146 | for username in usernames : |
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147 | if not newmembers.has_key(username) : |
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148 | newmembers[username] = username |
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149 | for member in newmembers.keys() : |
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150 | if not usersgid.has_key(member) : |
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151 | del newmembers[member] |
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152 | membership[gname] = newmembers.keys() |
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153 | return membership |
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154 | |
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155 | def runCommand(self, command, dryrun) : |
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156 | """Launches an external command.""" |
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157 | self.printInfo("%s" % command) |
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158 | if not dryrun : |
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159 | os.system(command) |
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160 | |
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161 | def createPrinters(self, printers, dryrun=0) : |
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162 | """Creates all printers in PyKota's database.""" |
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163 | if printers : |
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164 | args = open("/tmp/pkprinters.args", "w") |
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165 | args.write('--add\n--cups\n--skipexisting\n--description\n"printer created from pkturnkey"\n') |
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166 | args.write("%s\n" % "\n".join(['"%s"' % p[0] for p in printers])) |
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167 | args.close() |
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168 | self.runCommand("pkprinters --arguments /tmp/pkprinters.args", dryrun) |
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169 | |
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170 | def createUsers(self, users, printers, dryrun=0) : |
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171 | """Creates all users in PyKota's database.""" |
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172 | if users : |
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173 | args = open("/tmp/pkusers.users.args", "w") |
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174 | args.write('--add\n--skipexisting\n--description\n"user created from pkturnkey"\n--limitby\nnoquota\n') |
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175 | args.write("%s\n" % "\n".join(['"%s"' % u for u in users])) |
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176 | args.close() |
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177 | self.runCommand("pkusers --arguments /tmp/pkusers.users.args", dryrun) |
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178 | |
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179 | printersnames = [p[0] for p in printers] |
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180 | args = open("/tmp/edpykota.users.args", "w") |
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181 | args.write('--add\n--skipexisting\n--noquota\n--printer\n') |
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182 | args.write("%s\n" % ",".join(['"%s"' % p for p in printersnames])) |
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183 | args.write("%s\n" % "\n".join(['"%s"' % u for u in users])) |
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184 | args.close() |
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185 | self.runCommand("edpykota --arguments /tmp/edpykota.users.args", dryrun) |
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186 | |
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187 | def createGroups(self, groups, printers, dryrun=0) : |
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188 | """Creates all groups in PyKota's database.""" |
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189 | if groups : |
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190 | args = open("/tmp/pkusers.groups.args", "w") |
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191 | args.write('--groups\n--add\n--skipexisting\n--description\n"group created from pkturnkey"\n--limitby\nnoquota\n') |
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192 | args.write("%s\n" % "\n".join(['"%s"' % g for g in groups])) |
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193 | args.close() |
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194 | self.runCommand("pkusers --arguments /tmp/pkusers.groups.args", dryrun) |
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195 | |
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196 | printersnames = [p[0] for p in printers] |
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197 | args = open("/tmp/edpykota.groups.args", "w") |
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198 | args.write('--groups\n--add\n--skipexisting\n--noquota\n--printer\n') |
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199 | args.write("%s\n" % ",".join(['"%s"' % p for p in printersnames])) |
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200 | args.write("%s\n" % "\n".join(['"%s"' % g for g in groups])) |
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201 | args.close() |
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202 | self.runCommand("edpykota --arguments /tmp/edpykota.groups.args", dryrun) |
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203 | |
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204 | revmembership = {} |
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205 | for (groupname, usernames) in groups.items() : |
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206 | for username in usernames : |
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207 | revmembership.setdefault(username, []).append(groupname) |
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208 | commands = [] |
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209 | for (username, groupnames) in revmembership.items() : |
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210 | commands.append('pkusers --ingroups %s "%s"' \ |
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211 | % (",".join(['"%s"' % g for g in groupnames]), username)) |
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212 | for command in commands : |
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213 | self.runCommand(command, dryrun) |
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214 | |
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215 | def supportsSNMP(self, hostname, community) : |
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216 | """Returns 1 if the printer accepts SNMP queries, else 0.""" |
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217 | pageCounterOID = "1.3.6.1.2.1.43.10.2.1.4.1.1" # SNMPv2-SMI::mib-2.43.10.2.1.4.1.1 |
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218 | try : |
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219 | from pysnmp.entity.rfc3413.oneliner import cmdgen |
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220 | except ImportError : |
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221 | hasV4 = False |
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222 | try : |
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223 | from pysnmp.asn1.encoding.ber.error import TypeMismatchError |
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224 | from pysnmp.mapping.udp.role import Manager |
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225 | from pysnmp.proto.api import alpha |
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226 | except ImportError : |
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227 | sys.stderr.write("pysnmp doesn't seem to be installed. SNMP checks will be ignored !\n") |
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228 | return 0 |
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229 | else : |
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230 | hasV4 = True |
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231 | |
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232 | if hasV4 : |
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233 | def retrieveSNMPValues(hostname, community) : |
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234 | """Retrieves a printer's internal page counter and status via SNMP.""" |
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235 | errorIndication, errorStatus, errorIndex, varBinds = \ |
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236 | cmdgen.CommandGenerator().getCmd(cmdgen.CommunityData("pykota", community, 0), \ |
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237 | cmdgen.UdpTransportTarget((hostname, 161)), \ |
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238 | tuple([int(i) for i in pageCounterOID.split('.')])) |
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239 | if errorIndication : |
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240 | raise "No SNMP !" |
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241 | elif errorStatus : |
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242 | raise "No SNMP !" |
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243 | else : |
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244 | self.SNMPOK = True |
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245 | else : |
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246 | def retrieveSNMPValues(hostname, community) : |
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247 | """Retrieves a printer's internal page counter and status via SNMP.""" |
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248 | ver = alpha.protoVersions[alpha.protoVersionId1] |
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249 | req = ver.Message() |
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250 | req.apiAlphaSetCommunity(community) |
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251 | req.apiAlphaSetPdu(ver.GetRequestPdu()) |
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252 | req.apiAlphaGetPdu().apiAlphaSetVarBindList((pageCounterOID, ver.Null())) |
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253 | tsp = Manager() |
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254 | try : |
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255 | tsp.sendAndReceive(req.berEncode(), \ |
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256 | (hostname, 161), \ |
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257 | (handleAnswer, req)) |
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258 | except : |
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259 | raise "No SNMP !" |
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260 | tsp.close() |
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261 | |
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262 | def handleAnswer(wholemsg, notusedhere, req): |
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263 | """Decodes and handles the SNMP answer.""" |
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264 | ver = alpha.protoVersions[alpha.protoVersionId1] |
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265 | rsp = ver.Message() |
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266 | try : |
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267 | rsp.berDecode(wholemsg) |
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268 | except TypeMismatchError, msg : |
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269 | raise "No SNMP !" |
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270 | else : |
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271 | if req.apiAlphaMatch(rsp): |
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272 | errorStatus = rsp.apiAlphaGetPdu().apiAlphaGetErrorStatus() |
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273 | if errorStatus: |
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274 | raise "No SNMP !" |
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275 | else: |
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276 | self.values = [] |
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277 | for varBind in rsp.apiAlphaGetPdu().apiAlphaGetVarBindList(): |
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278 | self.values.append(varBind.apiAlphaGetOidVal()[1].rawAsn1Value) |
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279 | try : |
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280 | pagecounter = self.values[0] |
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281 | except : |
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282 | raise "No SNMP !" |
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283 | else : |
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284 | self.SNMPOK = 1 |
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285 | return 1 |
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286 | |
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287 | self.SNMPOK = 0 |
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288 | try : |
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289 | retrieveSNMPValues(hostname, community) |
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290 | except : |
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291 | self.SNMPOK = 0 |
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292 | return self.SNMPOK |
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293 | |
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294 | def supportsPJL(self, hostname, port) : |
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295 | """Returns 1 if the printer accepts PJL queries over TCP, else 0.""" |
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296 | def alarmHandler(signum, frame) : |
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297 | raise "Timeout !" |
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298 | |
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299 | pjlsupport = 0 |
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300 | signal.signal(signal.SIGALRM, alarmHandler) |
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301 | signal.alarm(2) # wait at most 2 seconds |
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302 | s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) |
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303 | try : |
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304 | s.connect((hostname, port)) |
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305 | s.send("\033%-12345X@PJL INFO STATUS\r\n\033%-12345X") |
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306 | answer = s.recv(1024) |
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307 | if not answer.startswith("@PJL") : |
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308 | raise "No PJL !" |
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309 | except : |
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310 | pass |
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311 | else : |
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312 | pjlsupport = 1 |
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313 | s.close() |
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314 | signal.alarm(0) |
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315 | signal.signal(signal.SIGALRM, signal.SIG_IGN) |
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316 | return pjlsupport |
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317 | |
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318 | def hintConfig(self, printers) : |
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319 | """Gives some hints about what to put into pykota.conf""" |
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320 | if not printers : |
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321 | return |
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322 | sys.stderr.flush() # ensure outputs don't mix |
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323 | print |
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324 | print "--- CUT ---" |
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325 | print "# Here are some lines that we suggest you add at the end" |
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326 | print "# of the pykota.conf file. These lines gives possible" |
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327 | print "# values for the way print jobs' size will be computed." |
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328 | print "# NB : it is possible that a manual configuration gives" |
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329 | print "# better results for you. As always, your mileage may vary." |
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330 | print "#" |
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331 | for (name, uri) in printers : |
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332 | print "[%s]" % name |
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333 | accounter = "software()" |
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334 | try : |
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335 | uri = uri.split("cupspykota:", 2)[-1] |
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336 | except (ValueError, IndexError) : |
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337 | pass |
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338 | else : |
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339 | while uri and uri.startswith("/") : |
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340 | uri = uri[1:] |
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341 | try : |
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342 | (backend, destination) = uri.split(":", 1) |
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343 | if backend not in ("ipp", "http", "https", "lpd", "socket") : |
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344 | raise ValueError |
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345 | except ValueError : |
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346 | pass |
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347 | else : |
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348 | while destination.startswith("/") : |
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349 | destination = destination[1:] |
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350 | checkauth = destination.split("@", 1) |
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351 | if len(checkauth) == 2 : |
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352 | destination = checkauth[1] |
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353 | parts = destination.split("/")[0].split(":") |
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354 | if len(parts) == 2 : |
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355 | (hostname, port) = parts |
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356 | try : |
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357 | port = int(port) |
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358 | except ValueError : |
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359 | port = 9100 |
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360 | else : |
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361 | (hostname, port) = parts[0], 9100 |
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362 | |
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363 | if self.supportsSNMP(hostname, "public") : |
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364 | accounter = "hardware(snmp)" |
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365 | elif self.supportsPJL(hostname, 9100) : |
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366 | accounter = "hardware(pjl)" |
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367 | elif self.supportsPJL(hostname, 9101) : |
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368 | accounter = "hardware(pjl:9101)" |
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369 | elif self.supportsPJL(hostname, port) : |
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370 | accounter = "hardware(pjl:%s)" % port |
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371 | |
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372 | print "preaccounter : software()" |
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373 | print "accounter : %s" % accounter |
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374 | print |
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375 | print "--- CUT ---" |
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376 | |
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377 | def main(self, names, options) : |
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378 | """Intializes PyKota's database.""" |
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379 | if not self.config.isAdmin : |
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380 | raise PyKotaCommandLineError, "%s : %s" % (pwd.getpwuid(os.geteuid())[0], \ |
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381 | _("You're not allowed to use this command.")) |
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382 | |
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383 | if not names : |
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384 | names = ["*"] |
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385 | |
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386 | self.printInfo(_("Please be patient...")) |
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387 | dryrun = not options["force"] |
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388 | if dryrun : |
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389 | self.printInfo(_("Don't worry, the database WILL NOT BE MODIFIED.")) |
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390 | else : |
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391 | self.printInfo(_("Please WORRY NOW, the database WILL BE MODIFIED.")) |
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392 | |
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393 | if options["dousers"] : |
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394 | if not options["uidmin"] : |
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395 | self.printInfo(_("System users will have a print account as well !"), "warn") |
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396 | uidmin = 0 |
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397 | else : |
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398 | try : |
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399 | uidmin = int(options["uidmin"]) |
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400 | except : |
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401 | try : |
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402 | uidmin = pwd.getpwnam(options["uidmin"])[2] |
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403 | except KeyError, msg : |
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404 | raise PyKotaCommandLineError, _("Unknown username %s : %s") \ |
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405 | % (options["uidmin"], msg) |
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406 | |
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407 | if not options["uidmax"] : |
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408 | uidmax = sys.maxint |
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409 | else : |
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410 | try : |
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411 | uidmax = int(options["uidmax"]) |
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412 | except : |
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413 | try : |
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414 | uidmax = pwd.getpwnam(options["uidmax"])[2] |
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415 | except KeyError, msg : |
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416 | raise PyKotaCommandLineError, _("Unknown username %s : %s") \ |
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417 | % (options["uidmax"], msg) |
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418 | |
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419 | if uidmin > uidmax : |
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420 | (uidmin, uidmax) = (uidmax, uidmin) |
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421 | users = self.listUsers(uidmin, uidmax) |
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422 | else : |
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423 | users = [] |
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424 | |
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425 | if options["dogroups"] : |
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426 | if not options["gidmin"] : |
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427 | self.printInfo(_("System groups will have a print account as well !"), "warn") |
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428 | gidmin = 0 |
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429 | else : |
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430 | try : |
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431 | gidmin = int(options["gidmin"]) |
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432 | except : |
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433 | try : |
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434 | gidmin = grp.getgrnam(options["gidmin"])[2] |
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435 | except KeyError, msg : |
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436 | raise PyKotaCommandLineError, _("Unknown groupname %s : %s") \ |
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437 | % (options["gidmin"], msg) |
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438 | |
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439 | if not options["gidmax"] : |
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440 | gidmax = sys.maxint |
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441 | else : |
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442 | try : |
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443 | gidmax = int(options["gidmax"]) |
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444 | except : |
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445 | try : |
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446 | gidmax = grp.getgrnam(options["gidmax"])[2] |
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447 | except KeyError, msg : |
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448 | raise PyKotaCommandLineError, _("Unknown groupname %s : %s") \ |
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449 | % (options["gidmax"], msg) |
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450 | |
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451 | if gidmin > gidmax : |
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452 | (gidmin, gidmax) = (gidmax, gidmin) |
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453 | groups = self.listGroups(gidmin, gidmax, users) |
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454 | if not options["emptygroups"] : |
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455 | for (groupname, members) in groups.items() : |
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456 | if not members : |
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457 | del groups[groupname] |
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458 | else : |
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459 | groups = [] |
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460 | |
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461 | printers = self.listPrinters(names) |
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462 | if printers : |
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463 | self.createPrinters(printers, dryrun) |
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464 | self.createUsers([entry[0] for entry in users], printers, dryrun) |
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465 | self.createGroups(groups, printers, dryrun) |
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466 | |
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467 | if dryrun : |
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468 | self.printInfo(_("Simulation terminated.")) |
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469 | else : |
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470 | self.printInfo(_("Database initialized !")) |
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471 | |
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472 | if options["doconf"] : |
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473 | self.hintConfig(printers) |
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474 | |
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475 | |
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476 | if __name__ == "__main__" : |
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477 | retcode = 0 |
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478 | try : |
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479 | short_options = "hvdDefu:U:g:G:c" |
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480 | long_options = ["help", "version", "dousers", "dogroups", \ |
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481 | "emptygroups", "force", "uidmin=", "uidmax=", \ |
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482 | "gidmin=", "gidmax=", "doconf"] |
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483 | |
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484 | # Initializes the command line tool |
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485 | manager = PKTurnKey(doc=__doc__) |
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486 | manager.deferredInit() |
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487 | |
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488 | # parse and checks the command line |
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489 | (options, args) = manager.parseCommandline(sys.argv[1:], \ |
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490 | short_options, \ |
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491 | long_options, \ |
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492 | allownothing=1) |
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493 | |
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494 | # sets long options |
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495 | options["help"] = options["h"] or options["help"] |
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496 | options["version"] = options["v"] or options["version"] |
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497 | options["dousers"] = options["d"] or options["dousers"] |
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498 | options["dogroups"] = options["D"] or options["dogroups"] |
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499 | options["emptygroups"] = options["e"] or options["emptygroups"] |
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500 | options["force"] = options["f"] or options["force"] |
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501 | options["uidmin"] = options["u"] or options["uidmin"] |
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502 | options["uidmax"] = options["U"] or options["uidmax"] |
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503 | options["gidmin"] = options["g"] or options["gidmin"] |
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504 | options["gidmax"] = options["G"] or options["gidmax"] |
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505 | options["doconf"] = options["c"] or options["doconf"] |
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506 | |
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507 | if options["uidmin"] or options["uidmax"] : |
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508 | if not options["dousers"] : |
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509 | manager.printInfo(_("The --uidmin or --uidmax command line option implies --dousers as well."), "warn") |
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510 | options["dousers"] = 1 |
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511 | |
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512 | if options["gidmin"] or options["gidmax"] : |
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513 | if not options["dogroups"] : |
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514 | manager.printInfo(_("The --gidmin or --gidmax command line option implies --dogroups as well."), "warn") |
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515 | options["dogroups"] = 1 |
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516 | |
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517 | if options["dogroups"] : |
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518 | if not options["dousers"] : |
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519 | manager.printInfo(_("The --dogroups command line option implies --dousers as well."), "warn") |
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520 | options["dousers"] = 1 |
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521 | |
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522 | if options["help"] : |
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523 | manager.display_usage_and_quit() |
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524 | elif options["version"] : |
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525 | manager.display_version_and_quit() |
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526 | else : |
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527 | retcode = manager.main(args, options) |
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528 | except KeyboardInterrupt : |
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529 | sys.stderr.write("\nInterrupted with Ctrl+C !\n") |
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530 | retcode = -3 |
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531 | except PyKotaCommandLineError, msg : |
---|
532 | sys.stderr.write("%s : %s\n" % (sys.argv[0], msg)) |
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533 | retcode = -2 |
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534 | except SystemExit : |
---|
535 | pass |
---|
536 | except : |
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537 | try : |
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538 | manager.crashed("pkturnkey failed") |
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539 | except : |
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540 | crashed("pkturnkey failed") |
---|
541 | retcode = -1 |
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542 | |
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543 | try : |
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544 | manager.storage.close() |
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545 | except (TypeError, NameError, AttributeError) : |
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546 | pass |
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547 | |
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548 | sys.exit(retcode) |
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