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.InetAddress;
13 import java.nio.ByteBuffer;
15 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
16 import org.opendaylight.lispflowmapping.implementation.serializer.LispMessage;
17 import org.opendaylight.lispflowmapping.implementation.serializer.LispMessageEnum;
18 import org.opendaylight.lispflowmapping.implementation.serializer.MapNotifySerializer;
19 import org.opendaylight.lispflowmapping.implementation.serializer.MapRegisterSerializer;
20 import org.opendaylight.lispflowmapping.implementation.serializer.MapReplySerializer;
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.implementation.util.MapRequestUtil;
25 import org.opendaylight.lispflowmapping.southbound.lisp.exception.LispMalformedPacketException;
26 import org.opendaylight.lispflowmapping.southbound.lisp.network.PacketHeader;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.AddMappingBuilder;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.GotMapNotifyBuilder;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.GotMapReplyBuilder;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.MapNotify;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.MapRegister;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.MapRequest;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.MapReply;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.RequestMappingBuilder;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.transportaddress.TransportAddressBuilder;
36 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.PortNumber;
37 import org.slf4j.Logger;
38 import org.slf4j.LoggerFactory;
40 public class LispSouthboundService implements ILispSouthboundService {
41 private NotificationProviderService notificationProvider;
42 protected static final Logger LOG = LoggerFactory.getLogger(LispSouthboundService.class);
44 public void setNotificationProvider(NotificationProviderService nps) {
45 this.notificationProvider = nps;
48 public void handlePacket(DatagramPacket packet) {
49 ByteBuffer inBuffer = ByteBuffer.wrap(packet.getData(), 0, packet.getLength());
50 int type = ByteUtil.getUnsignedByte(inBuffer, LispMessage.Pos.TYPE) >> 4;
51 Object lispType = LispMessageEnum.valueOf((byte) (type));
52 if (lispType == LispMessageEnum.EncapsulatedControlMessage) {
53 LOG.trace("Received packet of type EncapsulatedControlMessage");
54 handleEncapsulatedControlMessage(inBuffer, packet.getAddress());
55 } else if (lispType == LispMessageEnum.MapRequest) {
56 LOG.trace("Received packet of type MapRequest");
57 handleMapRequest(inBuffer, packet.getPort());
58 } else if (lispType == LispMessageEnum.MapRegister) {
59 LOG.trace("Received packet of type MapRegister");
60 handleMapRegister(inBuffer, packet.getAddress(), packet.getPort());
61 } else if (lispType == LispMessageEnum.MapNotify) {
62 LOG.trace("Received packet of type MapNotify");
63 handleMapNotify(inBuffer, packet.getAddress(), packet.getPort());
64 } else if (lispType == LispMessageEnum.MapReply) {
65 LOG.trace("Received packet of type MapReply");
66 handleMapReply(inBuffer, packet.getAddress(), packet.getPort());
68 LOG.warn("Received unknown LISP control packet (type " + ((lispType != null) ? lispType : type) + ")");
69 LOG.trace("Buffer: " + ByteUtil.bytesToHex(packet.getData(), packet.getLength()));
73 private void handleEncapsulatedControlMessage(ByteBuffer inBuffer, InetAddress sourceAddress) {
75 handleMapRequest(inBuffer, extractEncapsulatedSourcePort(inBuffer));
76 } catch (RuntimeException re) {
77 throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len=" + inBuffer.capacity() + ")", re);
81 private void handleMapRequest(ByteBuffer inBuffer, int port) {
83 MapRequest request = MapRequestSerializer.getInstance().deserialize(inBuffer);
84 InetAddress finalSourceAddress = MapRequestUtil.selectItrRloc(request);
85 if (finalSourceAddress == null) {
86 throw new LispMalformedPacketException("Couldn't deserialize Map-Request, no ITR Rloc found!");
89 RequestMappingBuilder requestMappingBuilder = new RequestMappingBuilder();
90 requestMappingBuilder.setMapRequest(LispNotificationHelper.convertMapRequest(request));
91 TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
92 transportAddressBuilder.setIpAddress(LispNotificationHelper.getIpAddressFromInetAddress(finalSourceAddress));
93 transportAddressBuilder.setPort(new PortNumber(port));
94 requestMappingBuilder.setTransportAddress(transportAddressBuilder.build());
95 if (notificationProvider != null) {
96 notificationProvider.publish(requestMappingBuilder.build());
97 LOG.trace("MapRequest was published!");
99 LOG.warn("Notification Provider is null!");
101 } catch (RuntimeException re) {
102 throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len=" + inBuffer.capacity() + ")", re);
106 private int extractEncapsulatedSourcePort(ByteBuffer inBuffer) {
108 inBuffer.position(PacketHeader.Length.LISP_ENCAPSULATION);
109 int ipType = (inBuffer.get() >> 4);
111 inBuffer.position(inBuffer.position() + PacketHeader.Length.IPV4 - 1);
112 } else if (ipType == 6) {
113 inBuffer.position(inBuffer.position() + PacketHeader.Length.IPV6_NO_EXT - 1);
115 throw new LispMalformedPacketException("Couldn't deserialize Map-Request: inner packet has unknown IP version: " + ipType);
118 int encapsulatedSourcePort = inBuffer.getShort() & 0xFFFF;
119 inBuffer.position(inBuffer.position() + PacketHeader.Length.UDP - 2);
120 return encapsulatedSourcePort;
121 } catch (RuntimeException re) {
122 throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len=" + inBuffer.capacity() + ")", re);
126 private void handleMapRegister(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
128 MapRegister mapRegister = MapRegisterSerializer.getInstance().deserialize(inBuffer);
129 AddMappingBuilder addMappingBuilder = new AddMappingBuilder();
130 addMappingBuilder.setMapRegister(LispNotificationHelper.convertMapRegister(mapRegister));
131 TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
132 transportAddressBuilder.setIpAddress(LispNotificationHelper.getIpAddressFromInetAddress(sourceAddress));
133 transportAddressBuilder.setPort(new PortNumber(port));
134 addMappingBuilder.setTransportAddress(transportAddressBuilder.build());
135 if (notificationProvider != null) {
136 notificationProvider.publish(addMappingBuilder.build());
137 LOG.trace("MapRegister was published!");
139 LOG.warn("Notification Provider is null!");
141 } catch (RuntimeException re) {
142 throw new LispMalformedPacketException("Couldn't deserialize Map-Register (len=" + inBuffer.capacity() + ")", re);
146 private void handleMapNotify(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
148 MapNotify mapNotify = MapNotifySerializer.getInstance().deserialize(inBuffer);
149 GotMapNotifyBuilder gotMapNotifyBuilder = new GotMapNotifyBuilder();
150 gotMapNotifyBuilder.setMapNotify(LispNotificationHelper.convertMapNotify(mapNotify));
151 TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
152 transportAddressBuilder.setIpAddress(LispNotificationHelper.getIpAddressFromInetAddress(sourceAddress));
153 transportAddressBuilder.setPort(new PortNumber(port));
154 gotMapNotifyBuilder.setTransportAddress(transportAddressBuilder.build());
155 if (notificationProvider != null) {
156 notificationProvider.publish(gotMapNotifyBuilder.build());
157 LOG.trace("MapNotify was published!");
159 LOG.warn("Notification Provider is null!");
161 } catch (RuntimeException re) {
162 throw new LispMalformedPacketException("Couldn't deserialize Map-Notify (len=" + inBuffer.capacity() + ")", re);
166 private void handleMapReply(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
168 MapReply mapReply = MapReplySerializer.getInstance().deserialize(inBuffer);
169 GotMapReplyBuilder gotMapReplyBuilder = new GotMapReplyBuilder();
170 gotMapReplyBuilder.setMapReply(LispNotificationHelper.convertMapReply(mapReply));
171 TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
172 transportAddressBuilder.setIpAddress(LispNotificationHelper.getIpAddressFromInetAddress(sourceAddress));
173 transportAddressBuilder.setPort(new PortNumber(port));
174 gotMapReplyBuilder.setTransportAddress(transportAddressBuilder.build());
175 if (notificationProvider != null) {
176 notificationProvider.publish(gotMapReplyBuilder.build());
177 LOG.trace("MapReply was published!");
179 LOG.warn("Notification Provider is null!");
181 } catch (RuntimeException re) {
182 throw new LispMalformedPacketException("Couldn't deserialize Map-Reply (len=" + inBuffer.capacity() + ")", re);