virt-manager/virtManager/network.py
Gene Czarcinski 73629b76b2 IPv6 support v2: update gui python and ui
The purpose of this update is:

1. replace use of IPy with ipaddr since ipaddr has needed
functionality and IPy does not.
2. Update the glade-3 ui (vmm-host.ui) to provide
for IPv6 as well as IPv4.  If either IPv4 or IPv6
is not defined, its respective frame is hidden.
3. The DNS Domain Name is added to the basic frame.
4. IPv4 forwarding is moved to the basic frame and ipv6
forwarding is added.
5. If an IPv4 address is not defined then the IPv4
is set to Isolated network, internal rout only.
6. IPv6 network has three values for Forwarding:
Isolated network, Isolated network with internal forwarding,
and Routed network.
7. Add network definitions to tests/testdriver.xml which
include IPv6 and other new parameters now being handled.

This patch includes the fix for getting a KeyError exception
when deleting a network definition.

In this update, createnet.py has been changed to use
ipaddr but it still only handles IPv4 network creation.
.
Signed-off-by: Gene Czarcinski <gene@czarc.net>

(crobinso: Add Gene to AUTHORS)
2013-04-03 21:32:42 -04:00

248 lines
8.1 KiB
Python

#
# Copyright (C) 2006 Red Hat, Inc.
# Copyright (C) 2006 Daniel P. Berrange <berrange@redhat.com>
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
#
from virtManager import util
import ipaddr
import libxml2
from virtManager.libvirtobject import vmmLibvirtObject
class vmmNetwork(vmmLibvirtObject):
@staticmethod
def pretty_desc(forward, forwardDev):
if forward or forwardDev:
if not forward or forward == "nat":
if forwardDev:
desc = _("NAT to %s") % forwardDev
else:
desc = _("NAT")
elif forward == "route":
if forwardDev:
desc = _("Route to %s") % forwardDev
else:
desc = _("Routed network")
else:
if forwardDev:
desc = "%s to %s" % (forward, forwardDev)
else:
desc = "%s network" % forward.capitalize()
else:
desc = _("Isolated network, internal and host routing only")
return desc
def __init__(self, conn, net, uuid, active):
vmmLibvirtObject.__init__(self, conn)
self.net = net
self.uuid = uuid
self.active = active
# Required class methods
def get_name(self):
return self.net.name()
def _XMLDesc(self, flags):
return self.net.XMLDesc(flags)
def _define(self, xml):
return self.conn.vmm.networkDefineXML(xml)
def set_active(self, state):
self.active = state
def is_active(self):
return self.active
def get_label(self):
return self.get_name()
def get_uuid(self):
return self.uuid
def get_bridge_device(self):
try:
return self.net.bridgeName()
except:
return ""
def start(self):
self.net.create()
def stop(self):
self.net.destroy()
def delete(self):
self.net.undefine()
del(self.net)
self.net = None
def set_autostart(self, value):
self.net.setAutostart(value)
def get_autostart(self):
return self.net.autostart()
def get_ipv4_network(self):
doc = None
ret = None
goodNode = None
dhcpstart = None
dhcpend = None
routeAddr = None
routeVia = None
xml = self.get_xml()
doc = libxml2.parseDoc(xml)
nodes = doc.xpathEval('//ip')
for node in nodes:
family = node.xpathEval('string(./@family)')
if not family or family == 'ipv4':
dhcp = node.xpathEval('string(./dhcp)')
if dhcp:
dhcpstart = node.xpathEval('string(./dhcp/range[1]/@start)')
dhcpend = node.xpathEval('string(./dhcp/range[1]/@end)')
goodNode = node
break
for node in nodes:
family = node.xpathEval('string(./@family)')
if not family or family == 'ipv4':
routeVia = node.xpathEval('string(./@via)')
if routeVia:
routeAddr = node.xpathEval('string(./@address)')
break;
if goodNode == None:
for node in nodes:
family = node.xpathEval('string(./@family)')
if not family or family == 'ipv4':
tmp = node.xpathEval('string(./@via)')
if tmp:
continue
goodNode = node;
break
if goodNode:
addrStr = goodNode.xpathEval('string(./@address)')
netmaskStr = goodNode.xpathEval('string(./@netmask)')
prefix = goodNode.xpathEval('string(./@prefix)')
if prefix:
prefix = int(prefix)
ret = str(ipaddr.IPNetwork(str(addrStr) + "/" + str(prefix)).masked())
elif netmaskStr:
netmask = ipaddr.IPAddress(netmaskStr)
network = ipaddr.IPAddress(addrStr)
ret = str(ipaddr.IPNetwork(str(network) + "/" + str(netmask)).masked())
else:
ret = str(ipaddr.IPNetwork(str(addrStr)))
if doc:
doc.freeDoc()
if dhcpstart and dhcpend:
dhcp = [str(ipaddr.IPAddress(dhcpstart)), str(ipaddr.IPAddress(dhcpend))]
else:
dhcp = None
if routeAddr and routeVia:
route = [str(ipaddr.IPAddress(routeAddr)), str(ipaddr.IPAddress(routeVia))]
else:
route = None
return [ret, dhcp, route]
def get_ipv6_network(self):
doc = None
ret = None
goodNode = None
dhcpstart = None
dhcpend = None
routeAddr = None
routeVia = None
xml = self.get_xml()
doc = libxml2.parseDoc(xml)
nodes = doc.xpathEval('//ip')
for node in nodes:
family = node.xpathEval('string(./@family)')
if family and family == 'ipv6':
dhcp = node.xpathEval('string(./dhcp)')
if dhcp:
dhcpstart = node.xpathEval('string(./dhcp/range[1]/@start)')
dhcpend = node.xpathEval('string(./dhcp/range[1]/@end)')
goodNode = node
break
for node in nodes:
family = node.xpathEval('string(./@family)')
if family and family == 'ipv6':
routeVia = node.xpathEval('string(./@via)')
if routeVia:
routeAddr = node.xpathEval('string(./@address)')
break;
if goodNode == None:
for node in nodes:
family = node.xpathEval('string(./@family)')
if family and family == 'ipv6':
tmp = node.xpathEval('string(./@via)')
if tmp:
continue
goodNode = node;
break
if goodNode:
addrStr = goodNode.xpathEval('string(./@address)')
prefix = goodNode.xpathEval('string(./@prefix)')
if prefix:
prefix = int(prefix)
ret = str(ipaddr.IPNetwork(str(addrStr) + "/" + str(prefix)).masked())
else:
ret = str(ipaddr.IPNetwork(str(addrStr)))
if doc:
doc.freeDoc()
if dhcpstart and dhcpend:
dhcp = [str(ipaddr.IPAddress(dhcpstart)), str(ipaddr.IPAddress(dhcpend))]
else:
dhcp = None
if routeAddr and routeVia:
route = [str(ipaddr.IPAddress(routeAddr)), str(ipaddr.IPAddress(routeVia))]
else:
route = None
return [ret, dhcp, route]
def get_name_domain(self):
xml = self.get_xml()
name_domain = util.xpath(xml, "/network/domain/@name")
return name_domain
def get_ipv6_route(self):
xml = self.get_xml()
ipv6_route = util.xpath(xml, "/network/@ipv6")
return ipv6_route
def get_ipv4_forward(self):
xml = self.get_xml()
fw = util.xpath(xml, "/network/forward/@mode")
forwardDev = util.xpath(xml, "/network/forward/@dev")
return [fw, forwardDev]
def pretty_forward_mode(self):
forward, forwardDev = self.get_ipv4_forward()
return vmmNetwork.pretty_desc(forward, forwardDev)
def can_pxe(self):
xml = self.get_xml()
forward = self.get_ipv4_forward()[0]
if forward and forward != "nat":
return True
return bool(util.xpath(xml, "/network/ip/dhcp/bootp/@file"))