--- /dev/null
+"""
+IPv6 test! version: 0.3
+"""
+
+import logger
+import os
+import socket
+import re
+
+import tools
+import libvirt
+import uuid
+from sliver_libvirt import Sliver_Libvirt
+from xml.dom.minidom import parseString
+
+priority=4
+
+radvdConfFile = '/etc/radvd.conf'
+ipv6addrtag = 'ipv6_address'
+
+def start():
+ logger.log("ipv6: plugin starting up...")
+
+def buildLibvirtDefaultNetConfig(dom):
+
+ # create the <network> element
+ networkElem = dom.createElement("network")
+ # create <name> element
+ nameElem = dom.createElement("name")
+ textName = dom.createTextNode("default")
+ nameElem.appendChild(textName)
+ # create <uuid> element
+ uuidElem = dom.createElement("uuid")
+ textUUID = dom.createTextNode(str(uuid.uuid1()))
+ uuidElem.appendChild(textUUID)
+ # create <forward> element
+ forwardElem = dom.createElement("forward")
+ forwardElem.setAttribute("mode", "nat")
+ # create <nat> element
+ natElem = dom.createElement("nat")
+ # create <port> element
+ portElem = dom.createElement("port")
+ portElem.setAttribute("end", "65535")
+ portElem.setAttribute("start", "1024")
+ # create the ipv4 <ip> element
+ ipElem0 = dom.createElement("ip")
+ ipElem0.setAttribute("address", "192.168.122.1")
+ ipElem0.setAttribute("netmask", "255.255.255.0")
+ # create the <dhcp> element
+ dhcpElem = dom.createElement("dhcp")
+ # create the <range> element
+ rangeElem = dom.createElement("range")
+ rangeElem.setAttribute("end", "192.168.122.254")
+ rangeElem.setAttribute("start", "192.168.122.2")
+ # create the <bridge> element
+ bridgeElem = dom.createElement("bridge")
+ bridgeElem.setAttribute("delay", "0")
+ bridgeElem.setAttribute("name", "virbr0")
+ bridgeElem.setAttribute("stp", "on")
+
+ # build the whole thing
+ natElem.appendChild(portElem)
+ forwardElem.appendChild(natElem)
+
+ dhcpElem.appendChild(rangeElem)
+ ipElem0.appendChild(dhcpElem)
+ networkElem.appendChild(nameElem)
+ networkElem.appendChild(uuidElem)
+ networkElem.appendChild(forwardElem)
+ networkElem.appendChild(bridgeElem)
+ networkElem.appendChild(ipElem0)
+ return networkElem
+
+def checkForIPv6(defaultNetworkConfig):
+ netnodes = defaultNetworkConfig.getElementsByTagName('network')
+ hasIPv6 = False
+ for netnode in netnodes:
+ ips = netnode.getElementsByTagName('ip')
+ for ip in ips:
+ if ip.getAttribute('family')=='ipv6':
+ logger.log("ipv6: the configuration already have an IPv6 address/prefix set for the slivers! %s/%s" % (ip.getAttribute('address'), ip.getAttribute('prefix')) )
+ hasIPv6 = True
+ return hasIPv6
+
+
+
+def addIPv6(defaultNetworkConfig, ipv6addr, prefix):
+
+ netnodes = defaultNetworkConfig.getElementsByTagName('network')
+ for netnode in netnodes:
+ # create the ipv6 <ip> element 1
+ ipElem1 = defaultNetworkConfig.createElement("ip")
+ ipElem1.setAttribute("family", "ipv6")
+ ipElem1.setAttribute("address", ipv6addr)
+ ipElem1.setAttribute("prefix", prefix)
+ # create the ipv6 <ip> element 2
+ # it's ugly, I know, but we need a link-local address on the interface!
+ ipElem2 = defaultNetworkConfig.createElement("ip")
+ ipElem2.setAttribute("family", "ipv6")
+ ipElem2.setAttribute("address", "fe80:1234::1")
+ ipElem2.setAttribute("prefix", "64")
+ # adding to the 'defaultNetworkConfig'
+ netnode.appendChild(ipElem1)
+ netnode.appendChild(ipElem2)
+ return defaultNetworkConfig
+
+def changeIPv6(dom, ipv6addr, prefix):
+ ips = dom.getElementsByTagName('ip')
+ for ip in ips:
+ if ip.getAttribute("family")=='ipv6' and not(re.match(r'fe80(.*)', ip.getAttribute("address"), re.I)):
+ ip.setAttribute("address", ipv6addr)
+ ip.setAttribute("prefix", prefix)
+ return dom
+
+
+def removeIPv6(dom):
+ networks = dom.getElementsByTagName('network')
+ for network in networks:
+ ips = network.getElementsByTagName('ip')
+ for ip in ips:
+ if ip.getAttribute("family")=='ipv6':
+ network.removeChild(ip)
+ return dom
+
+
+def checkIfIPv6IsDifferent(dom, ipv6addr, prefix):
+ netnodes = dom.getElementsByTagName('network')
+ for netnode in netnodes:
+ ips = netnode.getElementsByTagName('ip')
+ for ip in ips:
+ if ip.getAttribute('family')=='ipv6' and not( re.match(r'fe80(.*)', ip.getAttribute("address"), re.I) ) and (ip.getAttribute('address')!=ipv6addr or ip.getAttribute('prefix')!=prefix):
+ logger.log("ipv6: the IPv6 address or prefix are different. Change detected!")
+ return True
+
+ return False
+
+
+def setAutostart(network):
+ try:
+ network.setAutostart(1)
+ except:
+ logger.log("ipv6: network could not set to autostart")
+
+
+def setUp(networkLibvirt, connLibvirt, networkElem, ipv6addr, prefix):
+ newXml = networkElem.toxml()
+ #logger.log(networkElem.toxml())
+ #ret = dir(conn)
+ #for method in ret:
+ # logger.log(repr(method))
+ networkLibvirt.undefine()
+ networkLibvirt.destroy()
+ connLibvirt.networkCreateXML(newXml)
+ networkDefault = connLibvirt.networkDefineXML(newXml)
+ setAutostart(networkDefault)
+ commandForwarding = ['sysctl', '-w', 'net.ipv6.conf.all.forwarding=1']
+ logger.log_call(commandForwarding, timeout=15*60)
+ configRadvd = """
+interface virbr0
+{
+ AdvSendAdvert on;
+ MinRtrAdvInterval 30;
+ MaxRtrAdvInterval 100;
+ prefix %s
+ {
+ AdvOnLink on;
+ AdvAutonomous on;
+ AdvRouterAddr off;
+ };
+
+};
+""" % (ipv6addr+"/"+prefix)
+ f=open(radvdConfFile,'w')
+ f.write(configRadvd)
+ f.close()
+ killRadvd()
+ startRadvd()
+ logger.log("ipv6: set up process finalized. Enabled IPv6 address to the slivers!")
+
+def cleanUp(networkLibvirt, connLibvirt, networkElem):
+ dom = removeIPv6(networkElem)
+ newXml = dom.toxml()
+ networkLibvirt.undefine()
+ networkLibvirt.destroy()
+ # TODO: set autostart for the network
+ connLibvirt.networkCreateXML(newXml)
+ networkDefault = connLibvirt.networkDefineXML(newXml)
+ setAutostart(networkDefault)
+ killRadvd()
+ logger.log("ipv6: cleanup process finalized. The IPv6 support on the slivers was removed.")
+
+def killRadvd():
+ commandKillRadvd = ['killall', 'radvd']
+ logger.log_call(commandKillRadvd, timeout=15*60)
+
+def startRadvd():
+ commandRadvd = ['radvd']
+ logger.log_call(commandRadvd, timeout=15*60)
+
+def getSliverTagId(slivertags):
+ for slivertag in slivertags:
+ if slivertag['tagname']==ipv6addrtag:
+ return slivertag['slice_tag_id']
+
+
+def SetSliverTag(plc, data, tagname):
+
+ for sliver in data['slivers']:
+ # TODO: what about the prefixlen? should we add on it as well?
+ # here, I'm just taking the ipv6addr (value)
+ value,prefixlen = tools.get_sliver_ipv6(sliver['name'])
+
+ node_id = tools.node_id()
+ logger.log("ipv6: slice %s" % (slice) )
+ logger.log("ipv6: nodeid %s" % (node_id) )
+ slivertags = plc.GetSliceTags({"name":slice['name'],"node_id":node_id,"tagname":tagname})
+ logger.log(repr(str(slivertags)))
+ for tag in slivertags:
+ logger.log(repr(str(tag)))
+
+ ipv6addr = plc.GetSliceIPv6Address(slice['name'])
+ # if the value to set is null...
+ if value is None:
+ if ipv6addr is not None or len(ipv6addr)==0:
+ # then, let's remove the slice tag
+ slivertag_id = getSliverTagId(slivertags)
+ plc.DeleteSliceTag(slivertag_id)
+ else:
+ # if the ipv6 addr set on the slice does not exist yet, so, let's add it
+ if (len(ipv6addr)==0 or ipv6addr is None) and len(value)>0:
+ try:
+ slivertag_id=plc.AddSliceTag(slice['name'],tagname,value,node_id)
+ logger.log("ipv6: slice tag added to slice %s" % (slice['name']) )
+ except:
+ logger.log_exc ("ipv6: could not set ipv6 addr tag to the slive. slice=%(slice['name'])s tag=%(tagname)s node_id=%(node_id)d" % locals() )
+ # if the ipv6 addr set on the slice is different on the value provided, let's update it
+ if len(value)>0 and ipv6addr!=value:
+ #slivertag_id=slivertags[0]['slice_tag_id']
+ slivertag_id = getSliverTagId(slivertags)
+ plc.UpdateSliceTag(slivertag_id,value)
+
+
+def GetSlivers(data, config, plc):
+
+ #return
+ #for sliver in data['slivers']:
+ #ipv6addr,prefixlen = tools.get_sliver_ipv6(sliver['name'])
+ #tools.add_ipv6addr_hosts_line(sliver['name'], data['hostname'], ipv6addr)
+ #result = tools.search_ipv6addr_hosts(sliver['name'], ipv6addr)
+ #logger.log("tools: result=%s" % (str(result)) )
+ #tools.remove_all_ipv6addr_hosts(sliver['name'], data['hostname'])
+ #return
+
+
+ type = 'sliver.LXC'
+
+ interfaces = data['interfaces']
+ logger.log(repr(interfaces))
+ for interface in interfaces:
+ logger.log('ipv6: get interface 1: %r'%(interface))
+ if 'interface_tag_ids' in interface:
+ interface_tag_ids = "interface_tag_ids"
+ interface_tag_id = "interface_tag_id"
+ settings = plc.GetInterfaceTags({interface_tag_id:interface[interface_tag_ids]})
+ isSliversIPv6PrefixSet = False
+ for setting in settings:
+ #logger.log(repr(setting))
+ if setting['tagname']=='sliversipv6prefix':
+ ipv6addrprefix = setting['value'].split('/', 1)
+ ipv6addr = ipv6addrprefix[0]
+ prefix = ipv6addrprefix[1]
+ logger.log("ipv6: %s" % (ipv6addr) )
+ validIPv6 = tools.isValidIPv6(ipv6addr)
+ if not(validIPv6):
+ logger.log("ipv6: the 'sliversipv6prefix' tag presented a non-valid IPv6 address!")
+ else:
+ # connecting to the libvirtd
+ connLibvirt = Sliver_Libvirt.getConnection(type)
+ list = connLibvirt.listAllNetworks()
+ for networkLibvirt in list:
+ xmldesc = networkLibvirt.XMLDesc()
+ dom = parseString(xmldesc)
+ hasIPv6 = checkForIPv6(dom)
+ if hasIPv6:
+ # let's first check if the IPv6 is different or is it the same...
+ isDifferent = checkIfIPv6IsDifferent(dom, ipv6addr, prefix)
+ if isDifferent:
+ logger.log("ipv6: the tag 'sliversipv6prefix' was modified! Updating the configuration with the new one...")
+ networkElem = changeIPv6(dom, ipv6addr, prefix)
+ setUp(networkLibvirt, connLibvirt, networkElem, ipv6addr, prefix)
+ logger.log("ipv6: trying to reboot the slivers...")
+ tools.reboot_sliver('blah')
+ else:
+ logger.log("ipv6: starting to redefine the virtual network...")
+ #networkElem = buildLibvirtDefaultNetConfig(dom,ipv6addr,prefix)
+ networkElem = addIPv6(dom, ipv6addr, prefix)
+ setUp(networkLibvirt, connLibvirt, networkElem, ipv6addr, prefix)
+ logger.log("ipv6: trying to reboot the slivers...")
+ tools.reboot_sliver('blah')
+ isSliversIPv6PrefixSet = True
+ if not(isSliversIPv6PrefixSet):
+ # connecting to the libvirtd
+ connLibvirt = Sliver_Libvirt.getConnection(type)
+ list = connLibvirt.listAllNetworks()
+ for networkLibvirt in list:
+ xmldesc = networkLibvirt.XMLDesc()
+ dom = parseString(xmldesc)
+ if checkForIPv6(dom):
+ cleanUp(networkLibvirt, connLibvirt, dom)
+ logger.log("ipv6: trying to reboot the slivers...")
+ tools.reboot_sliver('blah')
+
+ logger.log("ipv6: all done!")
git://git.onelab.eu / nodemanager.git / blobdiff