| /* |
| * Copyright 2016 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.onosproject.ospf.protocol.lsa; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.Objects; |
| import com.google.common.primitives.Bytes; |
| import org.onlab.packet.Ip4Address; |
| import org.onosproject.ospf.controller.OspfLsa; |
| import org.onosproject.ospf.controller.OspfLsaType; |
| import org.onosproject.ospf.protocol.util.OspfUtil; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.net.InetAddress; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Defines the LSA header, fields and the methods to access them. |
| */ |
| public class LsaHeader implements OspfLsa { |
| |
| /* |
| 0 1 2 3 |
| 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | LS age | Options | LS type | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Link State ID | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Advertising Router | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | LS sequence number | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | LS checksum | length | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| LSA header format |
| REFERENCE : RFC 2328 |
| */ |
| protected static final Logger log = LoggerFactory.getLogger(LsaHeader.class); |
| private int age; |
| private int options; |
| private int lsType; |
| private long lsSequenceNo; |
| private int lsCheckSum; |
| private int lsPacketLen; |
| private String linkStateId; |
| private Ip4Address advertisingRouter; |
| |
| /** |
| * Gets LSA age. |
| * |
| * @return LSA age |
| */ |
| public int age() { |
| return age; |
| } |
| |
| /** |
| * Sets LSA age. |
| * |
| * @param age LSA age |
| */ |
| public void setAge(int age) { |
| this.age = age; |
| } |
| |
| /** |
| * Gets options value. |
| * |
| * @return options header value |
| */ |
| public int options() { |
| return options; |
| } |
| |
| /** |
| * Sets options header value. |
| * |
| * @param options header value |
| */ |
| public void setOptions(int options) { |
| this.options = options; |
| } |
| |
| /** |
| * Gets LSA type. |
| * |
| * @return LSA type |
| */ |
| public int lsType() { |
| return lsType; |
| } |
| |
| /** |
| * Sets LSA type. |
| * |
| * @param lsType LSA type |
| */ |
| public void setLsType(int lsType) { |
| this.lsType = lsType; |
| } |
| |
| /** |
| * Gets link state id. |
| * |
| * @return linkStateId link state id |
| */ |
| public String linkStateId() { |
| return linkStateId; |
| } |
| |
| /** |
| * Sets link state id. |
| * |
| * @param linkStateId link state id |
| */ |
| public void setLinkStateId(String linkStateId) { |
| this.linkStateId = linkStateId; |
| } |
| |
| /** |
| * Gets advertising router IP. |
| * |
| * @return advertising router |
| */ |
| public Ip4Address advertisingRouter() { |
| return advertisingRouter; |
| } |
| |
| /** |
| * Sets advertising router. |
| * |
| * @param advertisingRouter advertising router |
| */ |
| public void setAdvertisingRouter(Ip4Address advertisingRouter) { |
| this.advertisingRouter = advertisingRouter; |
| } |
| |
| /** |
| * Gets LSA sequence number. |
| * |
| * @return LSA sequence number |
| */ |
| public long lsSequenceNo() { |
| return lsSequenceNo; |
| } |
| |
| /** |
| * Sets LSA sequence number. |
| * |
| * @param lsSequenceNo LSA sequence number |
| */ |
| public void setLsSequenceNo(long lsSequenceNo) { |
| this.lsSequenceNo = lsSequenceNo; |
| } |
| |
| /** |
| * Gets LSA check sum. |
| * |
| * @return lsCheckSum LSA checksum |
| */ |
| public int lsCheckSum() { |
| return lsCheckSum; |
| } |
| |
| /** |
| * Sets LSA checksum. |
| * |
| * @param lsCheckSum LSA checksum |
| */ |
| public void setLsCheckSum(int lsCheckSum) { |
| this.lsCheckSum = lsCheckSum; |
| } |
| |
| /** |
| * Gets lsa packet length. |
| * |
| * @return lsPacketLen LSA packet length |
| */ |
| public int lsPacketLen() { |
| return lsPacketLen; |
| } |
| |
| /** |
| * Sets LSA packet length. |
| * |
| * @param lsPacketLen LSA packet length |
| */ |
| public void setLsPacketLen(int lsPacketLen) { |
| this.lsPacketLen = lsPacketLen; |
| } |
| |
| @Override |
| public OspfLsaType getOspfLsaType() { |
| if (lsType == OspfLsaType.ROUTER.value()) { |
| return OspfLsaType.ROUTER; |
| } else if (lsType == OspfLsaType.NETWORK.value()) { |
| return OspfLsaType.NETWORK; |
| } else if (lsType == OspfLsaType.SUMMARY.value()) { |
| return OspfLsaType.SUMMARY; |
| } else if (lsType == OspfLsaType.ASBR_SUMMARY.value()) { |
| return OspfLsaType.ASBR_SUMMARY; |
| } else if (lsType == OspfLsaType.EXTERNAL_LSA.value()) { |
| return OspfLsaType.EXTERNAL_LSA; |
| } else if (lsType == OspfLsaType.LINK_LOCAL_OPAQUE_LSA.value()) { |
| return OspfLsaType.LINK_LOCAL_OPAQUE_LSA; |
| } else if (lsType == OspfLsaType.AREA_LOCAL_OPAQUE_LSA.value()) { |
| return OspfLsaType.AREA_LOCAL_OPAQUE_LSA; |
| } else if (lsType == OspfLsaType.AS_OPAQUE_LSA.value()) { |
| return OspfLsaType.AS_OPAQUE_LSA; |
| } |
| |
| return OspfLsaType.UNDEFINED; |
| } |
| |
| @Override |
| public OspfLsa lsaHeader() { |
| return this; |
| } |
| |
| /** |
| * Gets the LSA header as bytes. |
| * |
| * @return LSA header as bytes |
| */ |
| public byte[] getLsaHeaderAsByteArray() { |
| List<Byte> headerLst = new ArrayList<>(); |
| try { |
| headerLst.addAll(Bytes.asList(OspfUtil.convertToTwoBytes(this.age()))); |
| headerLst.add((byte) this.options()); |
| headerLst.add((byte) this.lsType()); |
| headerLst.addAll(Bytes.asList(InetAddress.getByName(this.linkStateId()).getAddress())); |
| headerLst.addAll(Bytes.asList(this.advertisingRouter().toOctets())); |
| headerLst.addAll(Bytes.asList(OspfUtil.convertToFourBytes(this.lsSequenceNo()))); |
| headerLst.addAll(Bytes.asList(OspfUtil.convertToTwoBytes(this.lsCheckSum()))); |
| headerLst.addAll(Bytes.asList(OspfUtil.convertToTwoBytes(this.lsPacketLen()))); |
| } catch (Exception e) { |
| log.debug("Error::getLsaHeaderAsByteArray {}", e.getMessage()); |
| return Bytes.toArray(headerLst); |
| } |
| return Bytes.toArray(headerLst); |
| } |
| |
| /** |
| * Populates the header from the LSA header instance. |
| * |
| * @param lsaHeader LSA header instance |
| */ |
| public void populateHeader(LsaHeader lsaHeader) { |
| //assign all the header values |
| this.setAge(lsaHeader.age()); |
| this.setOptions(lsaHeader.options()); |
| this.setLsType(lsaHeader.lsType()); |
| this.setLinkStateId(lsaHeader.linkStateId()); |
| this.setAdvertisingRouter(lsaHeader.advertisingRouter()); |
| this.setLsSequenceNo(lsaHeader.lsSequenceNo()); |
| this.setLsCheckSum(lsaHeader.lsCheckSum()); |
| this.setLsPacketLen(lsaHeader.lsPacketLen()); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| LsaHeader that = (LsaHeader) o; |
| return Objects.equal(age, that.age) && |
| Objects.equal(options, that.options) && |
| Objects.equal(lsType, that.lsType) && |
| Objects.equal(lsSequenceNo, that.lsSequenceNo) && |
| Objects.equal(lsCheckSum, that.lsCheckSum) && |
| Objects.equal(lsPacketLen, that.lsPacketLen) && |
| Objects.equal(linkStateId, that.linkStateId) && |
| Objects.equal(advertisingRouter, that.advertisingRouter); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(age, options, lsType, lsSequenceNo, lsCheckSum, |
| lsPacketLen, linkStateId, advertisingRouter); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .omitNullValues() |
| .add("age", age) |
| .add("options", options) |
| .add("lsType", lsType) |
| .add("lsSequenceNo", lsSequenceNo) |
| .add("lsCheckSum", lsCheckSum) |
| .add("lsPacketLen", lsPacketLen) |
| .add("linkStateId;", linkStateId) |
| .add("advertisingRouter", advertisingRouter) |
| .toString(); |
| } |
| } |