[1905] | 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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[2028] | 8 | # (c) 2003, 2004, 2005 Jerome Alet <alet@librelogiciel.com> |
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[1905] | 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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[2126] | 26 | # Revision 1.6 2005/03/05 18:54:54 jalet |
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| 27 | # Improved the installation documentation. |
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| 28 | # Now checkdeps also checks for the presence of GhostScript, which |
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| 29 | # may be needed if PyKota's bannering facility is used or if some |
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| 30 | # printer driver produces non-DSC compliant PostScript. |
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| 31 | # |
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[2061] | 32 | # Revision 1.5 2005/02/14 23:37:58 jalet |
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| 33 | # Added a check for the presence of pythn-psyco |
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| 34 | # |
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[2028] | 35 | # Revision 1.4 2005/01/17 08:44:23 jalet |
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| 36 | # Modified copyright years |
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| 37 | # |
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[1920] | 38 | # Revision 1.3 2004/11/15 21:11:01 jalet |
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| 39 | # Modified some labels for Python modules |
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| 40 | # |
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[1919] | 41 | # Revision 1.2 2004/11/15 21:08:01 jalet |
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| 42 | # Now checks for the presence of ReportLab and PIL |
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| 43 | # |
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[1905] | 44 | # Revision 1.1 2004/11/10 22:17:12 jalet |
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| 45 | # Installation script is now non-interactive again, and doesn't install |
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| 46 | # the sample configuration files into /etc/pykota anymore. |
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| 47 | # Dependencies check is now done by running checkdeps.py |
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| 48 | # The database creation scripts will now be included in RPM packages. |
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| 49 | # |
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| 50 | # |
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| 51 | # |
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| 52 | |
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| 53 | import sys |
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| 54 | import os |
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| 55 | |
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| 56 | def checkModule(module) : |
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| 57 | """Checks if a Python module is available or not.""" |
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| 58 | try : |
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| 59 | exec "import %s" % module |
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| 60 | except ImportError : |
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| 61 | return 0 |
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| 62 | else : |
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| 63 | return 1 |
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| 64 | |
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| 65 | def checkCommand(command) : |
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| 66 | """Checks if a command is available or not.""" |
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| 67 | input = os.popen("type %s 2>/dev/null" % command) |
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| 68 | result = input.read().strip() |
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| 69 | input.close() |
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| 70 | return result |
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| 71 | |
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| 72 | def checkWithPrompt(prompt, module=None, command=None, helper=None) : |
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| 73 | """Tells the user what will be checked, and asks him what to do if something is absent.""" |
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| 74 | sys.stdout.write("Checking for %s availability : " % prompt) |
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| 75 | sys.stdout.flush() |
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| 76 | if command is not None : |
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| 77 | result = checkCommand(command) |
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| 78 | elif module is not None : |
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| 79 | result = checkModule(module) |
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| 80 | if result : |
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| 81 | sys.stdout.write("OK\n") |
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| 82 | else : |
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| 83 | sys.stdout.write("NO.\n") |
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| 84 | sys.stderr.write("ERROR : %s not available !\n" % prompt) |
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| 85 | sys.stdout.write("%s\n" % helper) |
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| 86 | |
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| 87 | if __name__ == "__main__" : |
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| 88 | print "Checking PyKota dependencies..." |
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| 89 | |
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| 90 | # checks if Python version is correct, we need >= 2.1 |
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| 91 | if not (sys.version > "2.1") : |
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| 92 | 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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| 93 | sys.exit(-1) |
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| 94 | |
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| 95 | # checks if some needed Python modules are there or not. |
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[1920] | 96 | 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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| 97 | ("Python-egenix-mxDateTime", "mx.DateTime", "eGenix' mxDateTime is mandatory for PyKota to work.\nSee http://www.egenix.com"), |
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[1905] | 98 | ("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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| 99 | ("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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| 100 | ("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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| 101 | ("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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[1919] | 102 | ("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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| 103 | ("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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[2061] | 104 | ("Python-Psyco", "psyco", "Python-Psyco speedups parsing of print files, you should use it.\nSee http://psyco.sourceforge.net/"), |
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[1905] | 105 | ] |
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[2126] | 106 | commandstocheck = [ ("GhostScript", "gs", "Depending on your configuration, GhostScript may be needed in different parts of PyKota."), |
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| 107 | ("SNMP Tools", "snmpget", "SNMP Tools are needed if you want to use SNMP enabled printers."), |
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[1905] | 108 | ("Netatalk", "pap", "Netatalk is needed if you want to use AppleTalk enabled printers.") |
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| 109 | ] |
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| 110 | for (name, module, helper) in modulestocheck : |
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| 111 | checkWithPrompt(name, module=module, helper=helper) |
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| 112 | |
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| 113 | # checks if some software are there or not. |
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| 114 | for (name, command, helper) in commandstocheck : |
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| 115 | checkWithPrompt(name, command=command, helper=helper) |
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| 116 | |
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