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#!/usr/bin/env python
#
# NMConv
# Convert among netmask notations.
#
# Copyright 2001-2006 Davide Alberani <da@erlug.linux.it>
#
# This code is released under the GPL license.
#
import iplib, sys, getopt, os
CALL_NAME = os.path.basename(sys.argv[0])
APP_NAME='NMConv'
VERSION='0.6'
MYEMAIL='Davide Alberani <da@erlug.linux.it>'
HELP = """
%s Version: %s
Usage: %s [OPTIONS] netmask
Options:
-o output only in the specified notation (e.g.: dot|hex|bin|dec|oct).
-i the input is in the given notation (otherwise it's autodetected).
Send bug reports to %s
""" % (APP_NAME, VERSION, CALL_NAME, MYEMAIL)
try:
optlist, args = getopt.getopt(sys.argv[1:],
'ho:i:', ['help', 'output=', 'input='])
except getopt.error:
print HELP
sys.exit(1)
if len(args) != 1:
sys.stderr.write('Only one argument is required.\n')
print HELP
sys.exit(2)
outp = ''
inp = ''
for opt in optlist:
if opt[0] == '-h' or opt[0] == '--help':
print HELP
sys.exit(0)
elif opt[0] == '-o' or opt[0] == '--output':
outp = opt[1]
elif opt[0] == '-i' or opt[0] == '--input':
inp = opt[1]
nm = args[0]
if nm and nm[0] == '/':
nm = nm[1:]
if not inp:
inp = iplib.detect_nm(nm)
if not outp and inp:
print ' notation autodetected as: "%s"' % iplib.p_notation(inp)
if inp == iplib.IP_UNKNOWN:
sys.stderr.write('unable to autodetect the notation of "%s"' % nm)
print HELP
sys.exit(4)
if outp:
try:
print iplib.convert_nm(nm, notation=outp, inotation=inp)
except ValueError:
sys.stderr.write(nm + ' netmask is not in ' + iplib.p_notation(inp) + \
' notation or cannot be converted to ' + \
str(outp) + '.\n')
print HELP
sys.exit(4)
else:
for notation in iplib.NOTATION_MAP.keys():
if notation == iplib.NM_UNKNOWN:
continue
try:
print iplib.NOTATION_MAP[notation][0] + ': ' + \
iplib.convert_nm(nm, notation=notation, inotation=inp)
except ValueError:
sys.stderr.write('%s: invalid netmask.\n' % nm)
print HELP
sys.exit(4)
sys.exit(0)
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