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 tool to hint for printer accounters |
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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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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22 | # |
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23 | # $Id$ |
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24 | # |
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25 | # $Log$ |
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26 | # Revision 1.1 2004/02/07 13:45:51 jalet |
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27 | # Preliminary work on the pkhint command |
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28 | # |
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29 | # |
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30 | # |
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31 | |
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32 | import sys |
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33 | import os |
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34 | |
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35 | from pykota import version |
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36 | from pykota.tool import PyKotaTool,PyKotaToolError |
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37 | from pykota.config import PyKotaConfigError |
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38 | from pykota.storage import PyKotaStorageError |
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39 | |
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40 | __doc__ = """pkhint v%s (c) 2003-2004 C@LL - Conseil Internet & Logiciels Libres |
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41 | A tool to give hints on what accounting method is best for each printer. |
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42 | |
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43 | command line usage : |
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44 | |
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45 | pkhint [options] [printer1 printer2 printer3 ... printerN] |
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46 | |
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47 | options : |
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48 | |
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49 | -v | --version Prints pkhint's version number then exits. |
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50 | -h | --help Prints this message then exits. |
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51 | |
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52 | examples : |
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53 | |
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54 | $ pkhint "hp*" printer103 |
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55 | |
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56 | Will analyze your printing system to test which accounter |
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57 | is the best for each of the defined printer which |
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58 | name matches one of the parameters. |
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59 | |
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60 | If you don't pass any argument on the command line, all |
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61 | printers will be analyzed. |
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62 | |
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63 | This program is free software; you can redistribute it and/or modify |
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64 | it under the terms of the GNU General Public License as published by |
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65 | the Free Software Foundation; either version 2 of the License, or |
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66 | (at your option) any later version. |
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67 | |
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68 | This program is distributed in the hope that it will be useful, |
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69 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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70 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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71 | GNU General Public License for more details. |
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72 | |
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73 | You should have received a copy of the GNU General Public License |
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74 | along with this program; if not, write to the Free Software |
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75 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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76 | |
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77 | Please e-mail bugs to: %s""" % (version.__version__, version.__author__) |
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78 | |
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79 | SNMPTESTS = [ \ |
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80 | '/usr/bin/npadmin --pagecount %(printer)s', \ |
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81 | '/usr/bin/snmpget -v1 -c public -Ov %(printer)s mib-2.43.10.2.1.4.1.1 | cut -f 2,2 -d " "', \ |
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82 | '/usr/bin/snmpwalk -v 1 -Cc -c public %(printer)s | grep mib-2.43.10.2.1.4.1.1 | cut -d " " -f4', \ |
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83 | '/usr/bin/snmpwalk -v 1 -Cc -c public -Ov %(printer)s | grep Counter32 | tail -2 | head -1 | cut -d " " -f2', \ |
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84 | ] |
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85 | |
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86 | class PKHint(PyKotaTool) : |
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87 | """A class to autodetect the best accounting method for printers.""" |
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88 | def extractPrintersInformation(self) : |
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89 | """Extracts printer information from the printing system. |
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90 | |
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91 | Returns a mapping { queuename : device, ... } |
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92 | """ |
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93 | printers = {} |
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94 | current_printer = None |
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95 | for line in [l.strip() for l in sys.stdin.readlines()] : |
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96 | testline = line.lower() |
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97 | if testline.startswith("<printer ") or testline.startswith("<defaultprinter ") : |
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98 | # beginning of a CUPS printer definition |
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99 | current_printer = line.split()[-1][:-1] |
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100 | elif testline.startswith("</printer ") : |
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101 | # end of a CUPS printer definition |
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102 | current_printer = None |
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103 | elif testline.startswith("deviceuri ") : |
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104 | # CUPS printer device_uri |
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105 | device = testline.split()[-1] |
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106 | if current_printer is not None : |
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107 | printers[current_printer] = device |
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108 | else : |
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109 | # LPRng printcap specific code here |
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110 | pass |
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111 | return printers |
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112 | |
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113 | def extractDevices(self) : |
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114 | """Extracts the list of available CUPS devices. |
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115 | |
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116 | Returns a mapping { device : devicetype, ... } |
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117 | |
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118 | WARNING : CUPS ONLY FOR NOW |
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119 | """ |
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120 | inp = os.popen("/usr/sbin/lpinfo -v 2>/dev/null") |
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121 | deviceslist = [l.strip() for l in inp.readlines()] |
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122 | inp.close() |
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123 | devicestypes = {} |
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124 | for device in deviceslist : |
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125 | (dtype, dname) = device.split() |
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126 | devicestypes[dname] = dtype |
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127 | return devicestypes |
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128 | |
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129 | def searchDeviceType(self, devicestypes, device) : |
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130 | """Returns the device type for current device.""" |
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131 | for (k, v) in devicestypes.items() : |
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132 | if device.startswith(k) : |
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133 | return v |
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134 | |
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135 | def extractDeviceFromURI(self, device) : |
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136 | """Cleans the device URI to remove any trace of PyKota.""" |
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137 | if device.startswith("cupspykota:") : |
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138 | fulldevice = device[:] |
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139 | device = fulldevice[len("cupspykota:"):] |
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140 | if device.startswith("//") : |
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141 | device = device[2:] |
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142 | try : |
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143 | (backend, destination) = device.split(":", 1) |
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144 | except ValueError : |
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145 | raise PyKotaToolError, "Invalid DEVICE_URI : %s\n" % device |
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146 | while destination.startswith("/") : |
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147 | destination = destination[1:] |
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148 | checkauth = destination.split("@", 1) |
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149 | if len(checkauth) == 2 : |
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150 | destination = checkauth[1] |
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151 | return destination.split("/")[0] |
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152 | |
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153 | def acceptsSNMP(self, printer) : |
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154 | """Tries to get the printer's internal page counter via SNMP.""" |
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155 | for command in SNMPTESTS : |
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156 | inp = os.popen((command + " 2>/dev/null") % locals()) |
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157 | value = inp.readline().strip() |
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158 | inp.close() |
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159 | try : |
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160 | pagecounter = int(value) |
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161 | except : |
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162 | pass |
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163 | else : |
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164 | return command |
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165 | |
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166 | def main(self, args, options) : |
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167 | """Main work is done here.""" |
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168 | print "Put the following lines into your /etc/pykota/pykota.conf file :\n" |
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169 | printers = self.extractPrintersInformation() |
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170 | devicestypes = self.extractDevices() # TODO : IT'S CUPS ONLY FOR NOW |
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171 | for (printer, device) in printers.items() : |
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172 | if self.matchString(printer, args) : |
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173 | print "[%s]" % printer |
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174 | devicetype = self.searchDeviceType(devicestypes, device) |
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175 | device = self.extractDeviceFromURI(device) |
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176 | if devicetype is None : |
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177 | sys.stderr.write("Unknown device %s for printer %s\n" % (device, printer)) |
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178 | elif devicetype == "network" : |
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179 | try : |
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180 | hostname, port = device.split(':') |
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181 | except ValueError : |
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182 | hostname = device |
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183 | snmpcommand = self.acceptsSNMP(hostname) |
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184 | if snmpcommand is not None : |
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185 | print "accounter: querying" |
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186 | print 'requester: external(/usr/bin/waitprinter.sh %(printer)s && ' + snmpcommand + ')' |
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187 | elif devicetype == "direct" : |
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188 | sys.stderr.write("Can't currently handle device %s for printer %s\n" % (device, printer)) |
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189 | elif devicetype == "serial" : |
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190 | sys.stderr.write("Can't currently handle device %s for printer %s\n" % (device, printer)) |
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191 | else : |
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192 | sys.stderr.write("Can't currently handle device %s for printer %s\n" % (device, printer)) |
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193 | print |
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194 | |
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195 | if __name__ == "__main__" : |
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196 | sys.stderr.write("BEWARE : This tool doesn't support LPRng's printcap files yet.\n") |
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197 | retcode = 0 |
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198 | try : |
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199 | short_options = "hv" |
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200 | long_options = ["help", "version"] |
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201 | |
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202 | # Initializes the command line tool |
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203 | manager = PKHint(doc=__doc__) |
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204 | |
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205 | (options, args) = manager.parseCommandline(sys.argv[1:], short_options, long_options) |
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206 | |
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207 | # sets long options |
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208 | options["help"] = options["h"] or options["help"] |
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209 | options["version"] = options["v"] or options["version"] |
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210 | |
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211 | if options["help"] : |
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212 | manager.display_usage_and_quit() |
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213 | elif options["version"] : |
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214 | manager.display_version_and_quit() |
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215 | else : |
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216 | if not args : |
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217 | args = [ "*" ] |
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218 | retcode = manager.main(args, options) |
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219 | except (PyKotaToolError, PyKotaConfigError, PyKotaStorageError), msg : |
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220 | sys.stderr.write("%s\n" % msg) |
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221 | sys.stderr.flush() |
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222 | retcode = -1 |
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223 | |
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224 | try : |
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225 | manager.storage.close() |
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226 | except (TypeError, NameError, AttributeError) : |
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227 | pass |
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228 | |
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229 | sys.exit(retcode) |
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