103 lines
3.2 KiB
Python
Executable File
103 lines
3.2 KiB
Python
Executable File
#!/usr/bin/python2
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2010 Rafal Wojtczuk <rafal@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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#
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from qubes.qubes import QubesVmCollection
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import os.path
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import os
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import sys
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qvm_collection = None
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def get_netvm():
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global qvm_collection
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qvm_collection = QubesVmCollection()
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qvm_collection.lock_db_for_reading()
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qvm_collection.load()
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qvm_collection.unlock_db()
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netvm = qvm_collection.get_default_netvm()
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while netvm.netvm is not None:
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netvm = netvm.netvm
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if netvm is None or netvm.name == 'dom0':
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print >> sys.stderr, 'There seems to be no dedicated default netvm, aborting.'
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sys.exit(1)
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return netvm
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def vif_eth0_exists():
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if not os.path.islink('/sys/class/net/eth0'):
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return False
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if not os.path.isdir('/sys/devices/xen/vif-0/net/eth0'):
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print >> sys.stderr, 'There is a dedicated netvm, but device eth0 is present'
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print >> sys.stderr, 'and it is not a Xen interface. Refusing to continue.'
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sys.exit(1)
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return True
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def bringup_eth0(netvm):
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resolv_conf = open('/etc/resolv.conf', "w")
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resolv_conf.write('nameserver ' + netvm.gateway + '\n')
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resolv_conf.write('nameserver ' + netvm.secondary_dns + '\n')
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resolv_conf.close()
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return os.system('ifconfig eth0 10.137.0.2 netmask 255.255.255.255 && route add default dev eth0') == 0
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def netup():
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netvm = get_netvm()
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if os.path.isfile('/var/lock/subsys/NetworkManager'):
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os.system('/etc/init.d/NetworkManager stop')
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if not vif_eth0_exists():
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cmd = 'modprobe xennet'
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if os.system(cmd) != 0:
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print >> sys.stderr, 'Error creating network device'
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sys.exit(1)
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qvm_collection[0].attach_network(verbose=True, netvm=netvm, wait=True)
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if not bringup_eth0(netvm):
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sys.exit(1)
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def netdown():
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netvm = get_netvm()
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if not vif_eth0_exists():
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print >> sys.stderr, 'There is no eth0 that is a Xen vif device, aborting.'
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sys.exit(1)
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resolv_conf = open('/etc/resolv.conf', "w")
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resolv_conf.close()
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os.system('ifconfig eth0 down')
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os.system('xl network-detach 0 0')
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def usage():
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print >> sys.stderr, 'Usage: {0} [up|down]'.format(sys.argv[0])
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sys.exit(1)
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def main():
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if len(sys.argv) != 2:
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usage()
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if os.getuid() != 0:
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print >> sys.stderr, 'This script must be run as root'
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sys.exit(1)
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if sys.argv[1] == 'up':
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netup()
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sys.exit(0)
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if sys.argv[1] == 'down':
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netdown()
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sys.exit(0)
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usage()
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main()
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