Jian Li | 6b77dc0 | 2016-07-14 16:04:25 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.lisp.msg.types; |
| 17 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 18 | import io.netty.buffer.ByteBuf; |
| 19 | import org.onosproject.lisp.msg.exceptions.LispParseError; |
| 20 | import org.onosproject.lisp.msg.exceptions.LispReaderException; |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 21 | import org.onosproject.lisp.msg.exceptions.LispWriterException; |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 22 | |
Jian Li | d56f97e | 2016-07-19 15:48:15 +0900 | [diff] [blame] | 23 | import java.util.Objects; |
| 24 | |
Jian Li | 5e505c6 | 2016-12-05 02:44:24 +0900 | [diff] [blame^] | 25 | import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.IP4; |
| 26 | import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.IP6; |
| 27 | import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.NO_ADDRESS; |
| 28 | import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.DISTINGUISHED_NAME; |
| 29 | import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.MAC; |
| 30 | import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.LCAF; |
| 31 | import static org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum.AS; |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 32 | |
Jian Li | 6b77dc0 | 2016-07-14 16:04:25 +0900 | [diff] [blame] | 33 | /** |
| 34 | * LISP Locator address typed by Address Family Identifier (AFI). |
| 35 | */ |
| 36 | public abstract class LispAfiAddress { |
| 37 | |
| 38 | private final AddressFamilyIdentifierEnum afi; |
| 39 | |
| 40 | /** |
| 41 | * Initializes AFI enumeration value. |
| 42 | * |
| 43 | * @param afi address family identifier |
| 44 | */ |
| 45 | protected LispAfiAddress(AddressFamilyIdentifierEnum afi) { |
| 46 | this.afi = afi; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Obtains AFI enumeration value. |
| 51 | * |
| 52 | * @return AFI enumeration value |
| 53 | */ |
| 54 | public AddressFamilyIdentifierEnum getAfi() { |
| 55 | return afi; |
| 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public int hashCode() { |
Jian Li | d56f97e | 2016-07-19 15:48:15 +0900 | [diff] [blame] | 60 | return Objects.hash(afi); |
Jian Li | 6b77dc0 | 2016-07-14 16:04:25 +0900 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | @Override |
| 64 | public boolean equals(Object obj) { |
| 65 | if (this == obj) { |
| 66 | return true; |
| 67 | } |
| 68 | |
| 69 | if (obj == null) { |
| 70 | return false; |
| 71 | } |
| 72 | |
| 73 | if (getClass() != obj.getClass()) { |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | LispAfiAddress other = (LispAfiAddress) obj; |
| 78 | if (afi != other.afi) { |
| 79 | return false; |
| 80 | } |
| 81 | return true; |
| 82 | } |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 83 | |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 84 | /** |
| 85 | * AFI address reader class. |
| 86 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 87 | public static class AfiAddressReader implements LispAddressReader<LispAfiAddress> { |
| 88 | |
| 89 | @Override |
| 90 | public LispAfiAddress readFrom(ByteBuf byteBuf) |
| 91 | throws LispParseError, LispReaderException { |
| 92 | |
| 93 | int index = byteBuf.readerIndex(); |
| 94 | |
| 95 | // AFI code -> 16 bits |
| 96 | short afiCode = (short) byteBuf.getUnsignedShort(index); |
| 97 | |
Jian Li | f11594a | 2016-10-31 18:16:02 +0900 | [diff] [blame] | 98 | // handle no address |
| 99 | if (afiCode == NO_ADDRESS.getIanaCode()) { |
| 100 | byteBuf.readUnsignedShort(); |
Jian Li | 6ef1b3f | 2016-11-12 18:16:06 +0900 | [diff] [blame] | 101 | return new LispNoAddress.NoAddressReader().readFrom(byteBuf); |
Jian Li | f11594a | 2016-10-31 18:16:02 +0900 | [diff] [blame] | 102 | } |
| 103 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 104 | // handle IPv4 and IPv6 address |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 105 | if (afiCode == IP4.getIanaCode() || |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 106 | afiCode == IP6.getIanaCode()) { |
| 107 | return new LispIpAddress.IpAddressReader().readFrom(byteBuf); |
| 108 | } |
| 109 | |
| 110 | // handle distinguished name address |
| 111 | if (afiCode == DISTINGUISHED_NAME.getIanaCode()) { |
| 112 | return new LispDistinguishedNameAddress.DistinguishedNameAddressReader().readFrom(byteBuf); |
| 113 | } |
| 114 | |
| 115 | // handle MAC address |
| 116 | if (afiCode == MAC.getIanaCode()) { |
| 117 | return new LispMacAddress.MacAddressReader().readFrom(byteBuf); |
| 118 | } |
| 119 | |
| 120 | // handle LCAF address |
| 121 | if (afiCode == LCAF.getIanaCode()) { |
| 122 | return new LispLcafAddress.LcafAddressReader().readFrom(byteBuf); |
| 123 | } |
| 124 | |
| 125 | // handle autonomous system address |
| 126 | if (afiCode == AS.getIanaCode()) { |
| 127 | return new LispAsAddress.AsAddressReader().readFrom(byteBuf); |
| 128 | } |
| 129 | |
| 130 | return null; |
| 131 | } |
| 132 | } |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 133 | |
| 134 | /** |
| 135 | * AFI address writer class. |
| 136 | */ |
| 137 | public static class AfiAddressWriter implements LispAddressWriter<LispAfiAddress> { |
| 138 | |
| 139 | @Override |
| 140 | public void writeTo(ByteBuf byteBuf, LispAfiAddress address) throws LispWriterException { |
Jian Li | 76ea057 | 2016-08-29 12:41:16 +0900 | [diff] [blame] | 141 | |
| 142 | // AFI code |
| 143 | byteBuf.writeShort(address.getAfi().getIanaCode()); |
| 144 | |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 145 | switch (address.getAfi()) { |
Jian Li | 6ef1b3f | 2016-11-12 18:16:06 +0900 | [diff] [blame] | 146 | case NO_ADDRESS: |
| 147 | new LispNoAddress.NoAddressWriter().writeTo(byteBuf, (LispNoAddress) address); |
| 148 | break; |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 149 | case IP4: |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 150 | new LispIpAddress.IpAddressWriter().writeTo(byteBuf, (LispIpv4Address) address); |
| 151 | break; |
| 152 | case IP6: |
| 153 | new LispIpAddress.IpAddressWriter().writeTo(byteBuf, (LispIpv6Address) address); |
| 154 | break; |
| 155 | case DISTINGUISHED_NAME: |
| 156 | new LispDistinguishedNameAddress.DistinguishedNameAddressWriter().writeTo(byteBuf, |
| 157 | (LispDistinguishedNameAddress) address); |
| 158 | break; |
| 159 | case MAC: |
| 160 | new LispMacAddress.MacAddressWriter().writeTo(byteBuf, (LispMacAddress) address); |
| 161 | break; |
| 162 | case LCAF: |
| 163 | new LispLcafAddress.LcafAddressWriter().writeTo(byteBuf, (LispLcafAddress) address); |
| 164 | break; |
| 165 | case AS: |
| 166 | new LispAsAddress.AsAddressWriter().writeTo(byteBuf, (LispAsAddress) address); |
| 167 | break; |
| 168 | default: break; // TODO: need log warning message |
| 169 | } |
| 170 | } |
| 171 | } |
Jian Li | 6b77dc0 | 2016-07-14 16:04:25 +0900 | [diff] [blame] | 172 | } |