| /* |
| * Copyright 2014 Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| |
| package org.onlab.packet.ndp; |
| |
| import org.onlab.packet.BasePacket; |
| import org.onlab.packet.Data; |
| import org.onlab.packet.IPacket; |
| import org.onlab.packet.Ip6Address; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Arrays; |
| |
| /** |
| * Implements ICMPv6 Redirect packet format. (RFC 4861) |
| */ |
| public class Redirect extends BasePacket { |
| public static final byte HEADER_LENGTH = 36; // bytes |
| |
| protected byte[] targetAddress = new byte[Ip6Address.BYTE_LENGTH]; |
| protected byte[] destinationAddress = new byte[Ip6Address.BYTE_LENGTH]; |
| |
| /** |
| * Gets target address. |
| * |
| * @return the target IPv6 address |
| */ |
| public byte[] getTargetAddress() { |
| return this.targetAddress; |
| } |
| |
| /** |
| * Sets target address. |
| * |
| * @param targetAddress the target IPv6 address to set |
| * @return this |
| */ |
| public Redirect setTargetAddress(final byte[] targetAddress) { |
| this.targetAddress = Arrays.copyOfRange(targetAddress, 0, Ip6Address.BYTE_LENGTH); |
| return this; |
| } |
| |
| /** |
| * Gets destination address. |
| * |
| * @return the destination IPv6 address |
| */ |
| public byte[] getDestinationAddress() { |
| return this.destinationAddress; |
| } |
| |
| /** |
| * Sets destination address. |
| * |
| * @param destinationAddress the destination IPv6 address to set |
| * @return this |
| */ |
| public Redirect setDestinationAddress(final byte[] destinationAddress) { |
| this.destinationAddress = Arrays.copyOfRange(destinationAddress, 0, Ip6Address.BYTE_LENGTH); |
| return this; |
| } |
| |
| @Override |
| public byte[] serialize() { |
| byte[] payloadData = null; |
| if (this.payload != null) { |
| this.payload.setParent(this); |
| payloadData = this.payload.serialize(); |
| } |
| |
| int payloadLength = 0; |
| if (payloadData != null) { |
| payloadLength = payloadData.length; |
| } |
| |
| final byte[] data = new byte[HEADER_LENGTH + payloadLength]; |
| final ByteBuffer bb = ByteBuffer.wrap(data); |
| |
| bb.putInt(0); |
| bb.put(this.targetAddress, 0, Ip6Address.BYTE_LENGTH); |
| bb.put(this.destinationAddress, 0, Ip6Address.BYTE_LENGTH); |
| |
| if (payloadData != null) { |
| bb.put(payloadData); |
| } |
| |
| return data; |
| } |
| |
| @Override |
| public IPacket deserialize(byte[] data, int offset, int length) { |
| final ByteBuffer bb = ByteBuffer.wrap(data, offset, length); |
| |
| bb.getInt(); |
| bb.get(this.targetAddress, 0, Ip6Address.BYTE_LENGTH); |
| bb.get(this.destinationAddress, 0, Ip6Address.BYTE_LENGTH); |
| |
| this.payload = new Data(); |
| this.payload = this.payload.deserialize(data, bb.position(), bb.limit() |
| - bb.position()); |
| this.payload.setParent(this); |
| |
| return this; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#hashCode() |
| */ |
| @Override |
| public int hashCode() { |
| final int prime = 5807; |
| int result = super.hashCode(); |
| ByteBuffer bb; |
| bb = ByteBuffer.wrap(this.targetAddress); |
| for (int i = 0; i < 4; i++) { |
| result = prime * result + bb.getInt(); |
| } |
| bb = ByteBuffer.wrap(this.destinationAddress); |
| for (int i = 0; i < 4; i++) { |
| result = prime * result + bb.getInt(); |
| } |
| return result; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| @Override |
| public boolean equals(final Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (!super.equals(obj)) { |
| return false; |
| } |
| if (!(obj instanceof Redirect)) { |
| return false; |
| } |
| final Redirect other = (Redirect) obj; |
| if (!Arrays.equals(this.targetAddress, other.targetAddress)) { |
| return false; |
| } |
| if (!Arrays.equals(this.destinationAddress, other.destinationAddress)) { |
| return false; |
| } |
| return true; |
| } |
| } |