org.onlab.packet.dhcp.Dhcp6InterfaceIdOption Maven / Gradle / Ivy
/*
* Copyright 2017-present Open Networking Foundation
*
* 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.dhcp;
import org.onlab.packet.MacAddress;
import com.google.common.base.MoreObjects;
import org.onlab.packet.DHCP6;
import org.onlab.packet.Deserializer;
import org.onlab.packet.DeserializationException;
import org.onlab.packet.VlanId;
import java.nio.ByteBuffer;
/**
* Relay option for DHCPv6.
* Based on RFC-3315.
*/
public final class Dhcp6InterfaceIdOption extends Dhcp6Option {
private static final short VLAN_LEN = 2;
private static final short SEPARATOR_LEN = 1;
private MacAddress peerMacAddr;
private byte[] inPort;
private short vlanId;
@Override
public short getCode() {
return DHCP6.OptionCode.INTERFACE_ID.value();
}
@Override
public short getLength() {
return (short) payload.serialize().length;
}
@Override
public byte[] getData() {
return this.payload.serialize();
}
/**
* Default constructor.
*/
public Dhcp6InterfaceIdOption() {
}
/**
* Constructs a DHCPv6 relay option with DHCPv6 option.
*
* @param dhcp6Option the DHCPv6 option
*/
public Dhcp6InterfaceIdOption(Dhcp6Option dhcp6Option) {
super(dhcp6Option);
}
/**
* Sets MacAddress address.
*
* @param macAddress the client peer MacAddress
*/
public void setMacAddress(MacAddress macAddress) {
this.peerMacAddr = macAddress;
}
/**
* Gets Mac address.
*
* @return the client peer mac address
*/
public MacAddress getMacAddress() {
return peerMacAddr;
}
/**
* Sets inPort string.
*
* @param port the port from which client packet is received
*/
public void setInPort(byte[] port) {
this.inPort = port;
}
/**
* Gets inPort string.
*
* @return the port from which client packet is received
*/
public byte[] getInPort() {
return inPort;
}
/**
* Sets the vlan id of interface id.
*
* @param vlanId the vlanid of client packet
*/
public void setVlanId(short vlanId) {
this.vlanId = vlanId;
}
/**
* Gets the vlan id of interface id.
*
* @return the vlan id
*
*/
public short getVlanId() {
return vlanId;
}
/**
* Gets deserializer for DHCPv6 relay option.
*
* @return the deserializer
*/
public static Deserializer deserializer() {
return (data, offset, len) -> {
Dhcp6Option dhcp6Option = Dhcp6Option.deserializer().deserialize(data, offset, len);
if (dhcp6Option.getLength() < DEFAULT_LEN) {
throw new DeserializationException("Invalid InterfaceIoption data");
}
Dhcp6InterfaceIdOption interfaceIdOption = new Dhcp6InterfaceIdOption(dhcp6Option);
byte[] optionData = interfaceIdOption.getData();
if (optionData.length >= 31) {
ByteBuffer bb = ByteBuffer.wrap(optionData);
byte[] macAddr = new byte[MacAddress.MAC_ADDRESS_LENGTH];
byte[] port = new byte[optionData.length - MacAddress.MAC_ADDRESS_LENGTH -
VLAN_LEN - SEPARATOR_LEN * 2];
short vlan;
bb.get(macAddr);
bb.get(); // separator "-"
bb.get(port);
bb.get(); // separator ":"
vlan = bb.getShort();
interfaceIdOption.setMacAddress(MacAddress.valueOf(macAddr));
interfaceIdOption.setInPort(port);
interfaceIdOption.setVlanId(vlan > VlanId.MAX_VLAN ? VlanId.UNTAGGED : vlan);
}
return interfaceIdOption;
};
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("code", getCode())
.add("length", getLength())
.add("data", payload.toString())
.toString();
}
}