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 |
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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 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 1.5 2005/02/14 23:37:58 jalet |
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27 | # Added a check for the presence of pythn-psyco |
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28 | # |
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29 | # Revision 1.4 2005/01/17 08:44:23 jalet |
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30 | # Modified copyright years |
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31 | # |
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32 | # Revision 1.3 2004/11/15 21:11:01 jalet |
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33 | # Modified some labels for Python modules |
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34 | # |
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35 | # Revision 1.2 2004/11/15 21:08:01 jalet |
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36 | # Now checks for the presence of ReportLab and PIL |
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37 | # |
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38 | # Revision 1.1 2004/11/10 22:17:12 jalet |
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39 | # Installation script is now non-interactive again, and doesn't install |
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40 | # the sample configuration files into /etc/pykota anymore. |
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41 | # Dependencies check is now done by running checkdeps.py |
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42 | # The database creation scripts will now be included in RPM packages. |
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43 | # |
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44 | # |
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45 | # |
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46 | |
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47 | import sys |
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48 | import os |
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49 | |
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50 | def checkModule(module) : |
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51 | """Checks if a Python module is available or not.""" |
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52 | try : |
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53 | exec "import %s" % module |
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54 | except ImportError : |
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55 | return 0 |
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56 | else : |
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57 | return 1 |
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58 | |
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59 | def checkCommand(command) : |
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60 | """Checks if a command is available or not.""" |
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61 | input = os.popen("type %s 2>/dev/null" % command) |
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62 | result = input.read().strip() |
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63 | input.close() |
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64 | return result |
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65 | |
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66 | def checkWithPrompt(prompt, module=None, command=None, helper=None) : |
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67 | """Tells the user what will be checked, and asks him what to do if something is absent.""" |
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68 | sys.stdout.write("Checking for %s availability : " % prompt) |
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69 | sys.stdout.flush() |
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70 | if command is not None : |
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71 | result = checkCommand(command) |
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72 | elif module is not None : |
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73 | result = checkModule(module) |
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74 | if result : |
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75 | sys.stdout.write("OK\n") |
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76 | else : |
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77 | sys.stdout.write("NO.\n") |
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78 | sys.stderr.write("ERROR : %s not available !\n" % prompt) |
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79 | sys.stdout.write("%s\n" % helper) |
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80 | |
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81 | if __name__ == "__main__" : |
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82 | print "Checking PyKota dependencies..." |
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83 | |
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84 | # checks if Python version is correct, we need >= 2.1 |
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85 | if not (sys.version > "2.1") : |
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86 | sys.stderr.write("PyKota needs at least Python v2.1 !\nYour version seems to be older than that, please update.\nAborted !\n") |
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87 | sys.exit(-1) |
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88 | |
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89 | # checks if some needed Python modules are there or not. |
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90 | modulestocheck = [ ("Python-PygreSQL", "pg", "PygreSQL is mandatory if you want to use PostgreSQL as the quota storage backend.\nSee http://www.pygresql.org"), |
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91 | ("Python-egenix-mxDateTime", "mx.DateTime", "eGenix' mxDateTime is mandatory for PyKota to work.\nSee http://www.egenix.com"), |
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92 | ("Python-LDAP", "ldap", "Python-LDAP is mandatory if you plan to use an LDAP\ndirectory as the quota storage backend.\nSee http://python-ldap.sf.net"), |
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93 | ("Python-OSD", "pyosd", "Python-OSD is recommended if you plan to use the X Window On Screen Display\nprint quota reminder named pykosd."), |
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94 | ("Python-SNMP", "pysnmp", "Python-SNMP is recommended if you plan to use hardware\naccounting with printers which support SNMP.\nSee http://pysnmp.sf.net"), |
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95 | ("Python-JAXML", "jaxml", "Python-JAXML is recommended if you plan to dump datas in the XML format.\nSee http://www.librelogiciel.com/software/"), |
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96 | ("Python-ReportLab", "reportlab.pdfgen.canvas", "Python-ReportLab is required if you plan to have PyKota generate banners.\nSee http://www.reportlab.org/"), |
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97 | ("Python-Imaging", "PIL.Image", "Python-Imaging is required if you plan to have PyKota generate banners.\nSee http://www.pythonware.com/downloads/"), |
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98 | ("Python-Psyco", "psyco", "Python-Psyco speedups parsing of print files, you should use it.\nSee http://psyco.sourceforge.net/"), |
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99 | ] |
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100 | commandstocheck = [ ("SNMP Tools", "snmpget", "SNMP Tools are needed if you want to use SNMP enabled printers."), |
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101 | ("Netatalk", "pap", "Netatalk is needed if you want to use AppleTalk enabled printers.") |
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102 | ] |
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103 | for (name, module, helper) in modulestocheck : |
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104 | checkWithPrompt(name, module=module, helper=helper) |
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105 | |
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106 | # checks if some software are there or not. |
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107 | for (name, command, helper) in commandstocheck : |
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108 | checkWithPrompt(name, command=command, helper=helper) |
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109 | |
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