2 * Copyright (c) 2014 Contextream, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.lispflowmapping.southbound.lisp;
11 import java.net.DatagramPacket;
12 import java.net.Inet4Address;
13 import java.net.InetAddress;
14 import java.net.UnknownHostException;
15 import java.nio.ByteBuffer;
17 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
18 import org.opendaylight.lispflowmapping.implementation.serializer.LispMessage;
19 import org.opendaylight.lispflowmapping.implementation.serializer.LispMessageEnum;
20 import org.opendaylight.lispflowmapping.implementation.serializer.MapRegisterSerializer;
21 import org.opendaylight.lispflowmapping.implementation.serializer.MapRequestSerializer;
22 import org.opendaylight.lispflowmapping.implementation.util.ByteUtil;
23 import org.opendaylight.lispflowmapping.implementation.util.LispNotificationHelper;
24 import org.opendaylight.lispflowmapping.southbound.lisp.exception.LispMalformedPacketException;
25 import org.opendaylight.lispflowmapping.southbound.lisp.network.PacketHeader;
26 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.AddMappingBuilder;
27 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.LispAFIAddress;
28 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.LispIpv4Address;
29 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.LispIpv6Address;
30 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.MapRegister;
31 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.MapRequest;
32 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.RequestMappingBuilder;
33 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.lispaddress.lispaddresscontainer.Address;
34 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.mapregisternotification.MapRegisterBuilder;
35 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.maprequest.ItrRloc;
36 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.maprequestnotification.MapRequestBuilder;
37 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.transportaddress.TransportAddressBuilder;
38 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
39 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Address;
40 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Address;
41 import org.slf4j.Logger;
42 import org.slf4j.LoggerFactory;
44 public class LispSouthboundService implements ILispSouthboundService {
45 private NotificationProviderService notificationProvider;
46 protected static final Logger logger = LoggerFactory.getLogger(LispSouthboundService.class);
48 public void setNotificationProvider(NotificationProviderService nps) {
49 this.notificationProvider = nps;
52 public void handlePacket(DatagramPacket packet) {
53 ByteBuffer inBuffer = ByteBuffer.wrap(packet.getData(), 0, packet.getLength());
54 Object lispType = LispMessageEnum.valueOf((byte) (ByteUtil.getUnsignedByte(inBuffer, LispMessage.Pos.TYPE) >> 4));
55 if (lispType == LispMessageEnum.EncapsulatedControlMessage) {
56 logger.trace("Recieved packet of type EncapsulatedControlMessage");
57 handleEncapsulatedControlMessage(inBuffer, packet.getAddress());
58 } else if (lispType == LispMessageEnum.MapRequest) {
59 logger.trace("Recieved packet of type MapRequest");
60 handleMapRequest(inBuffer);
61 } else if (lispType == LispMessageEnum.MapRegister) {
62 logger.trace("Recieved packet of type MapRegister");
63 handleMapRegister(inBuffer, packet.getAddress());
65 logger.warn("Recieved unknown packet type");
68 private void handleEncapsulatedControlMessage(ByteBuffer inBuffer, InetAddress sourceAddress) {
70 extractEncapsulatedSourcePort(inBuffer);
71 handleMapRequest(inBuffer);
72 } catch (RuntimeException re) {
73 throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len=" + inBuffer.capacity() + ")", re);
77 private void handleMapRequest(ByteBuffer inBuffer) {
79 MapRequest request = MapRequestSerializer.getInstance().deserialize(inBuffer);
80 InetAddress finalSourceAddress = null;
81 for (ItrRloc itr : request.getItrRloc()) {
82 Address addr = itr.getLispAddressContainer().getAddress();
83 if (addr instanceof LispIpv4Address) {
85 finalSourceAddress = InetAddress.getByName(((LispIpv4Address) addr).getIpv4Address().getValue());
86 } catch (UnknownHostException e) {
90 if (addr instanceof LispIpv6Address) {
92 finalSourceAddress = InetAddress.getByName((((LispIpv6Address) addr).getIpv6Address().getValue()));
93 } catch (UnknownHostException e) {
98 if (finalSourceAddress == null) {
99 throw new LispMalformedPacketException("Couldn't deserialize Map-Request, no ITR Rloc found!");
102 RequestMappingBuilder requestMappingBuilder = new RequestMappingBuilder();
103 requestMappingBuilder.setMapRequest(LispNotificationHelper.convertMapRequest(request));
104 TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
105 transportAddressBuilder.setIpAddress(LispNotificationHelper.getIpAddressFromInetAddress(finalSourceAddress));
106 requestMappingBuilder.setTransportAddress(transportAddressBuilder.build());
107 if (notificationProvider != null) {
108 notificationProvider.publish(requestMappingBuilder.build());
109 logger.trace("MapRequest was published!");
111 logger.warn("Notification Provider is null!");
113 } catch (RuntimeException re) {
114 throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len=" + inBuffer.capacity() + ")", re);
118 private int extractEncapsulatedSourcePort(ByteBuffer inBuffer) {
120 inBuffer.position(PacketHeader.Length.LISP_ENCAPSULATION);
121 int ipType = (inBuffer.get() >> 4);
123 inBuffer.position(inBuffer.position() + PacketHeader.Length.IPV4 - 1);
125 inBuffer.position(inBuffer.position() + PacketHeader.Length.IPV6_NO_EXT - 1);
128 int encapsulatedSourcePort = inBuffer.getShort() & 0xFFFF;
129 inBuffer.position(inBuffer.position() + PacketHeader.Length.UDP - 2);
130 return encapsulatedSourcePort;
131 } catch (RuntimeException re) {
132 throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len=" + inBuffer.capacity() + ")", re);
136 private void handleMapRegister(ByteBuffer inBuffer, InetAddress sourceAddress) {
138 MapRegister mapRegister = MapRegisterSerializer.getInstance().deserialize(inBuffer);
139 AddMappingBuilder addMappingBuilder = new AddMappingBuilder();
140 addMappingBuilder.setMapRegister(LispNotificationHelper.convertMapRegister(mapRegister));
141 TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
142 transportAddressBuilder.setIpAddress(LispNotificationHelper.getIpAddressFromInetAddress(sourceAddress));
143 addMappingBuilder.setTransportAddress(transportAddressBuilder.build());
144 if (notificationProvider != null) {
145 notificationProvider.publish(addMappingBuilder.build());
146 logger.trace("MapRegister was published!");
148 logger.warn("Notification Provider is null!");
150 } catch (RuntimeException re) {
151 throw new LispMalformedPacketException("Couldn't deserialize Map-Register (len=" + inBuffer.capacity() + ")", re);