| /* |
| * Copyright 2016-present 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.lisp.msg.types; |
| |
| import io.netty.buffer.ByteBuf; |
| import org.onosproject.lisp.msg.exceptions.LispParseError; |
| import org.onosproject.lisp.msg.exceptions.LispReaderException; |
| import org.onosproject.lisp.msg.exceptions.LispWriterException; |
| import org.onosproject.lisp.msg.types.lcaf.LispLcafAddress; |
| |
| import java.util.Objects; |
| |
| import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.IP4; |
| import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.IP6; |
| import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.NO_ADDRESS; |
| import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.DISTINGUISHED_NAME; |
| import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.MAC; |
| import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.LCAF; |
| import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.AS; |
| |
| /** |
| * LISP Locator address typed by Address Family Identifier (AFI). |
| */ |
| public abstract class LispAfiAddress { |
| |
| private final AddressFamilyIdentifierEnum afi; |
| |
| /** |
| * Initializes AFI enumeration value. |
| * |
| * @param afi address family identifier |
| */ |
| protected LispAfiAddress(AddressFamilyIdentifierEnum afi) { |
| this.afi = afi; |
| } |
| |
| /** |
| * Obtains AFI enumeration value. |
| * |
| * @return AFI enumeration value |
| */ |
| public AddressFamilyIdentifierEnum getAfi() { |
| return afi; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(afi); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj == null) { |
| return false; |
| } |
| |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| |
| LispAfiAddress other = (LispAfiAddress) obj; |
| if (afi != other.afi) { |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * AFI address reader class. |
| */ |
| public static class AfiAddressReader implements LispAddressReader<LispAfiAddress> { |
| |
| @Override |
| public LispAfiAddress readFrom(ByteBuf byteBuf) |
| throws LispParseError, LispReaderException { |
| |
| int index = byteBuf.readerIndex(); |
| |
| // AFI code -> 16 bits |
| short afiCode = (short) byteBuf.getUnsignedShort(index); |
| |
| // handle no address |
| if (afiCode == NO_ADDRESS.getIanaCode()) { |
| byteBuf.readUnsignedShort(); |
| return new LispNoAddress.NoAddressReader().readFrom(byteBuf); |
| } |
| |
| // handle IPv4 and IPv6 address |
| if (afiCode == IP4.getIanaCode() || |
| afiCode == IP6.getIanaCode()) { |
| return new LispIpAddress.IpAddressReader().readFrom(byteBuf); |
| } |
| |
| // handle distinguished name address |
| if (afiCode == DISTINGUISHED_NAME.getIanaCode()) { |
| return new LispDistinguishedNameAddress.DistinguishedNameAddressReader().readFrom(byteBuf); |
| } |
| |
| // handle MAC address |
| if (afiCode == MAC.getIanaCode()) { |
| return new LispMacAddress.MacAddressReader().readFrom(byteBuf); |
| } |
| |
| // handle LCAF address |
| if (afiCode == LCAF.getIanaCode()) { |
| return new LispLcafAddress.LcafAddressReader().readFrom(byteBuf); |
| } |
| |
| // handle autonomous system address |
| if (afiCode == AS.getIanaCode()) { |
| return new LispAsAddress.AsAddressReader().readFrom(byteBuf); |
| } |
| |
| return null; |
| } |
| } |
| |
| /** |
| * AFI address writer class. |
| */ |
| public static class AfiAddressWriter implements LispAddressWriter<LispAfiAddress> { |
| |
| @Override |
| public void writeTo(ByteBuf byteBuf, LispAfiAddress address) throws LispWriterException { |
| |
| // AFI code |
| byteBuf.writeShort(address.getAfi().getIanaCode()); |
| |
| switch (address.getAfi()) { |
| case NO_ADDRESS: |
| new LispNoAddress.NoAddressWriter().writeTo(byteBuf, (LispNoAddress) address); |
| break; |
| case IP4: |
| new LispIpAddress.IpAddressWriter().writeTo(byteBuf, (LispIpv4Address) address); |
| break; |
| case IP6: |
| new LispIpAddress.IpAddressWriter().writeTo(byteBuf, (LispIpv6Address) address); |
| break; |
| case DISTINGUISHED_NAME: |
| new LispDistinguishedNameAddress.DistinguishedNameAddressWriter().writeTo(byteBuf, |
| (LispDistinguishedNameAddress) address); |
| break; |
| case MAC: |
| new LispMacAddress.MacAddressWriter().writeTo(byteBuf, (LispMacAddress) address); |
| break; |
| case LCAF: |
| new LispLcafAddress.LcafAddressWriter().writeTo(byteBuf, (LispLcafAddress) address); |
| break; |
| case AS: |
| new LispAsAddress.AsAddressWriter().writeTo(byteBuf, (LispAsAddress) address); |
| break; |
| default: break; // TODO: need log warning message |
| } |
| } |
| } |
| } |