| /* |
| * 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 com.google.common.base.MoreObjects; |
| import com.google.common.collect.Lists; |
| import org.onlab.packet.DHCP6; |
| import org.onlab.packet.Deserializer; |
| import org.onlab.packet.Ip6Address; |
| |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * DHCPv6 Lease Query Option. |
| */ |
| public final class Dhcp6LeaseQueryOption extends Dhcp6Option { |
| |
| public static final int DEFAULT_LEN = 1 + 16; |
| //public short QueryType; |
| public Ip6Address linkAddress; |
| private List<Dhcp6Option> options; |
| public byte queryType; |
| |
| public Dhcp6LeaseQueryOption(Dhcp6Option dhcp6Option) { |
| super(dhcp6Option); |
| options = Lists.newArrayList(); |
| } |
| |
| @Override |
| public short getCode() { |
| return DHCP6.OptionCode.LEASE_QUERY.value(); |
| } |
| |
| @Override |
| public short getLength() { |
| //return (short) payload.serialize().length; |
| return (short) (DEFAULT_LEN + options.stream() |
| .mapToInt(opt -> (int) opt.getLength() + Dhcp6Option.DEFAULT_LEN) |
| .sum()); |
| } |
| |
| @Override |
| public byte[] getData() { |
| return payload.serialize(); |
| } |
| |
| |
| public static Deserializer<Dhcp6Option> deserializer() { |
| return (data, offset, length) -> { |
| Dhcp6Option dhcp6Option = Dhcp6Option.deserializer().deserialize(data, offset, length); |
| Dhcp6LeaseQueryOption lQ6Option = new Dhcp6LeaseQueryOption(dhcp6Option); |
| |
| byte[] optionData = lQ6Option.getData(); |
| if (optionData.length >= DEFAULT_LEN) { |
| ByteBuffer bb = ByteBuffer.wrap(optionData); |
| // fetch the Query type - just pop the byte from the byte buffer for subsequent parsing... |
| lQ6Option.queryType = bb.get(); |
| byte[] ipv6Addr = new byte[16]; |
| bb.get(ipv6Addr); |
| lQ6Option.linkAddress = Ip6Address.valueOf(ipv6Addr); |
| //int optionsLen = dhcp6Option.getLength() - 1 - 16; // query type (1) + link address (16) |
| |
| lQ6Option.options = Lists.newArrayList(); |
| |
| while (bb.remaining() >= Dhcp6Option.DEFAULT_LEN) { |
| Dhcp6Option option; |
| ByteBuffer optByteBuffer = ByteBuffer.wrap(optionData, |
| bb.position(), |
| optionData.length - bb.position()); |
| short code = optByteBuffer.getShort(); |
| short len = optByteBuffer.getShort(); |
| int optLen = UNSIGNED_SHORT_MASK & len; |
| byte[] subOptData = new byte[Dhcp6Option.DEFAULT_LEN + optLen]; |
| bb.get(subOptData); |
| |
| // TODO: put more sub-options? |
| if (code == DHCP6.OptionCode.IAADDR.value()) { |
| option = Dhcp6IaAddressOption.deserializer() |
| .deserialize(subOptData, 0, subOptData.length); |
| } else if (code == DHCP6.OptionCode.ORO.value()) { |
| option = Dhcp6Option.deserializer() |
| .deserialize(subOptData, 0, subOptData.length); |
| } else { |
| option = Dhcp6Option.deserializer() |
| .deserialize(subOptData, 0, subOptData.length); |
| } |
| lQ6Option.options.add(option); |
| } |
| } |
| return lQ6Option; |
| }; |
| } |
| |
| @Override |
| public byte[] serialize() { |
| byte[] serializedPayload = payload.serialize(); |
| |
| ByteBuffer bb = ByteBuffer.allocate(serializedPayload.length + Dhcp6Option.DEFAULT_LEN); |
| bb.putShort(getCode()); |
| bb.putShort(getLength()); |
| bb.put(serializedPayload); |
| |
| return bb.array(); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("code", getCode()) |
| .add("length", getLength()) |
| .toString(); |
| } |
| |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(super.hashCode(), linkAddress, options); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj == null) { |
| return false; |
| } |
| if (!(obj instanceof Dhcp6LeaseQueryOption)) { |
| return false; |
| } |
| if (!super.equals(obj)) { |
| return false; |
| } |
| final Dhcp6LeaseQueryOption other = (Dhcp6LeaseQueryOption) obj; |
| |
| return Objects.equals(getCode(), other.getCode()) && |
| Objects.equals(getLength(), other.getLength()) && |
| Objects.equals(linkAddress, other.linkAddress) && |
| Objects.equals(options, other.options); |
| } |
| } |