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#!/usr/bin/python
#
# dhcpclient-stub
#
# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import os
import sys
import getopt
# for testing
if (os.path.exists('isys')):
sys.path.append('isys')
sys.path.append('/usr/lib/anaconda')
import isys
from sys import argv
import network
from network import NetworkDevice
def showusage():
print "Usage: dhcpclient [-4] [-6] [-a] [-i device] [-c class]"
def showhelp():
showusage()
print "Options:"
print " -4 Configure IPv4 stack via DHCP"
print " -6 Configure IPv6 stack (DHCPv6 unless -a given)"
print " -a Use IPv6 auto neighbor discovery"
print " -i device Device to configure (e.g., eth0)"
print " -c class Optional DHCP class name"
print "Defaults:"
print " dhcpclient -4 -6 -a -i eth0"
if __name__ == "__main__":
dev = NetworkDevice('eth0')
dev.set(('bootproto', 'dhcp'))
auto = False
stacks = 0
help = False
unknown = False
try:
opts, args = getopt.getopt(sys.argv[1:], '46ai:c:',
['ipv4', 'ipv6', 'auto', 'interface',
'class', 'help'])
except getopt.GetoptError:
help = True
for o, a in opts:
if o in ('-4', '--ipv4'):
stacks += 4
elif o in ('-6', '--ipv6'):
stacks += 6
elif o in ('-a', '--auto'):
auto = True
elif o in ('-i', '--interface'):
dev.set(('device', a))
elif o in ('-c', '--class'):
dev.set(('dhcpclass', a))
elif o in ('--help'):
help = True
else:
unknown = True
if help:
showhelp()
sys.exit(0)
if unknown:
showusage()
sys.exit(1)
if auto:
dev.set(('ipv6_autoconf', 'yes'))
else:
dev.set(('ipv6_autoconf', 'no'))
if stacks == 10:
dev.set(('useipv4', True))
dev.set(('useipv6', True))
elif stacks == 6:
dev.set(('useipv4', False))
dev.set(('useipv6', True))
elif stacks == 4:
dev.set(('useipv4', True))
dev.set(('useipv6', False))
try:
ns = isys.dhcpNetDevice(dev)
if ns:
f = open('/etc/resolv.conf', 'w')
f.write("nameserver %s\n" % ns)
f.close()
except:
print "Error configuring device %s." % (dev.get('device'),)
sys.exit(0)
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