| /* |
| * 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<Dhcp6Option> 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(); |
| } |
| } |