| /* |
| * Copyright 2015 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.pim; |
| |
| import org.onlab.packet.DeserializationException; |
| |
| import java.nio.ByteBuffer; |
| import java.text.MessageFormat; |
| |
| import static org.onlab.packet.PacketUtils.checkBufferLength; |
| import static org.onlab.packet.PacketUtils.checkInput; |
| |
| public class PIMHelloOption { |
| |
| /** |
| * PIM Option types. |
| */ |
| public static final short OPT_HOLDTIME = 1; |
| public static final short OPT_PRUNEDELAY = 2; |
| public static final short OPT_PRIORITY = 19; |
| public static final short OPT_GENID = 20; |
| public static final short OPT_ADDRLIST = 24; |
| |
| public static final short DEFAULT_HOLDTIME = 105; |
| public static final int DEFAULT_PRUNEDELAY = 2000; // 2,000 ms |
| public static final int DEFAULT_PRIORITY = 1; |
| public static final int DEFAULT_GENID = 0; |
| |
| public static final int MINIMUM_OPTION_LEN_BYTES = 4; |
| |
| // Values for this particular hello option. |
| private short optType; |
| private short optLength; |
| private byte[] optValue; |
| |
| public PIMHelloOption() { |
| } |
| |
| /** |
| * Set a PIM Hello option by type. The length and default value of the |
| * type will be auto filled in by default. |
| * |
| * @param type hello option type |
| */ |
| public PIMHelloOption(short type) { |
| this.optType = type; |
| switch (type) { |
| case OPT_HOLDTIME: |
| this.optLength = 2; |
| this.optValue = new byte[optLength]; |
| ByteBuffer.wrap(this.optValue).putShort(PIMHelloOption.DEFAULT_HOLDTIME); |
| break; |
| |
| case OPT_PRUNEDELAY: |
| this.optLength = 4; |
| this.optValue = new byte[this.optLength]; |
| ByteBuffer.wrap(this.optValue).putInt(PIMHelloOption.DEFAULT_PRUNEDELAY); |
| break; |
| |
| case OPT_PRIORITY: |
| this.optLength = 4; |
| this.optValue = new byte[this.optLength]; |
| ByteBuffer.wrap(this.optValue).putInt(PIMHelloOption.DEFAULT_PRIORITY); |
| break; |
| |
| case OPT_GENID: |
| this.optLength = 4; |
| this.optValue = new byte[this.optLength]; |
| ByteBuffer.wrap(this.optValue).putInt(PIMHelloOption.DEFAULT_GENID); |
| break; |
| |
| case OPT_ADDRLIST: |
| this.optLength = 0; // We don't know what the length will be yet. |
| this.optValue = null; |
| |
| default: |
| //log.error("Unkown option type: " + type + "\n" ); |
| return; |
| } |
| } |
| |
| public void setOptType(short type) { |
| this.optType = type; |
| } |
| |
| public short getOptType() { |
| return this.optType; |
| } |
| |
| public void setOptLength(short len) { |
| this.optLength = len; |
| } |
| |
| public short getOptLength() { |
| return this.optLength; |
| } |
| |
| public void setValue(ByteBuffer bb) throws DeserializationException { |
| this.optValue = new byte[this.optLength]; |
| bb.get(this.optValue, 0, this.optLength); |
| } |
| |
| public byte[] getValue() { |
| return this.optValue; |
| } |
| |
| public static PIMHelloOption deserialize(ByteBuffer bb) throws DeserializationException { |
| checkInput(bb.array(), bb.position(), bb.limit() - bb.position(), 4); |
| |
| PIMHelloOption opt = new PIMHelloOption(); |
| opt.setOptType(bb.getShort()); |
| opt.setOptLength(bb.getShort()); |
| |
| checkBufferLength(bb.limit(), bb.position(), opt.getOptLength()); |
| opt.setValue(bb); |
| |
| return opt; |
| } |
| |
| public byte [] serialize() { |
| int len = 4 + this.optLength; |
| ByteBuffer bb = ByteBuffer.allocate(len); |
| bb.putShort(this.optType); |
| bb.putShort(this.optLength); |
| bb.put(this.optValue); |
| return bb.array(); |
| } |
| |
| public String toString() { |
| return MessageFormat.format("Type: {0}, len: {1} value: {2}", this.optType, this.optLength, |
| (this.optValue == null) ? "null" : this.optValue.toString()); |
| } |
| |
| } |