root / pykota / trunk / checkdeps.py @ 1907

Revision 1905, 4.1 kB (checked in by jalet, 20 years ago)

Installation script is now non-interactive again, and doesn't install
the sample configuration files into /etc/pykota anymore.
Dependencies check is now done by running checkdeps.py
The database creation scripts will now be included in RPM packages.

  • Property svn:eol-style set to native
  • Property svn:executable set to *
  • Property svn:keywords set to Author Date Id Revision
Line 
1#! /usr/bin/env python
2# -*- coding: ISO-8859-15 -*-
3#
4# PyKota
5#
6# PyKota : Print Quotas for CUPS and LPRng
7#
8# (c) 2003-2004 Jerome Alet <alet@librelogiciel.com>
9# This program is free software; you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation; either version 2 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program; if not, write to the Free Software
21# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22#
23# $Id$
24#
25# $Log$
26# Revision 1.1  2004/11/10 22:17:12  jalet
27# Installation script is now non-interactive again, and doesn't install
28# the sample configuration files into /etc/pykota anymore.
29# Dependencies check is now done by running checkdeps.py
30# The database creation scripts will now be included in RPM packages.
31#
32#
33#
34
35import sys
36import os
37
38def checkModule(module) :
39    """Checks if a Python module is available or not."""
40    try :
41        exec "import %s" % module
42    except ImportError :   
43        return 0
44    else :   
45        return 1
46       
47def checkCommand(command) :
48    """Checks if a command is available or not."""
49    input = os.popen("type %s 2>/dev/null" % command)
50    result = input.read().strip()
51    input.close()
52    return result
53   
54def checkWithPrompt(prompt, module=None, command=None, helper=None) :
55    """Tells the user what will be checked, and asks him what to do if something is absent."""
56    sys.stdout.write("Checking for %s availability : " % prompt)
57    sys.stdout.flush()
58    if command is not None :
59        result = checkCommand(command)
60    elif module is not None :   
61        result = checkModule(module)
62    if result :   
63        sys.stdout.write("OK\n")
64    else :   
65        sys.stdout.write("NO.\n")
66        sys.stderr.write("ERROR : %s not available !\n" % prompt)
67        sys.stdout.write("%s\n" % helper)
68   
69if __name__ == "__main__" :   
70    print "Checking PyKota dependencies..."
71   
72    # checks if Python version is correct, we need >= 2.1
73    if not (sys.version > "2.1") :
74        sys.stderr.write("PyKota needs at least Python v2.1 !\nYour version seems to be older than that, please update.\nAborted !\n")
75        sys.exit(-1)
76       
77    # checks if some needed Python modules are there or not.
78    modulestocheck = [ ("PygreSQL", "pg", "PygreSQL is mandatory if you want to use PostgreSQL as the quota storage backend.\nSee http://www.pygresql.org"),
79                       ("mxDateTime", "mx.DateTime", "eGenix' mxDateTime is mandatory for PyKota to work.\nSee http://www.egenix.com"),
80                       ("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"),
81                       ("Python-OSD", "pyosd", "Python-OSD is recommended if you plan to use the X Window On Screen Display\nprint quota reminder named pykosd."),
82                       ("Python-SNMP", "pysnmp", "Python-SNMP is recommended if you plan to use hardware\naccounting with printers which support SNMP.\nSee http://pysnmp.sf.net"),
83                       ("Python-JAXML", "jaxml", "Python-JAXML is recommended if you plan to dump datas in the XML format.\nSee http://www.librelogiciel.com/software/"),
84                     ]
85    commandstocheck = [ ("SNMP Tools", "snmpget", "SNMP Tools are needed if you want to use SNMP enabled printers."), 
86                        ("Netatalk", "pap", "Netatalk is needed if you want to use AppleTalk enabled printers.")
87                      ]
88    for (name, module, helper) in modulestocheck :
89        checkWithPrompt(name, module=module, helper=helper)
90           
91    # checks if some software are there or not.
92    for (name, command, helper) in commandstocheck :
93        checkWithPrompt(name, command=command, helper=helper)
94           
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