Jian Li | 0959600 | 2016-07-15 17:46:49 +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 | */ |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 16 | package org.onosproject.lisp.msg.types.lcaf; |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 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 | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 22 | import org.onosproject.lisp.msg.types.AddressFamilyIdentifierEnum; |
| 23 | import org.onosproject.lisp.msg.types.LispAddressReader; |
| 24 | import org.onosproject.lisp.msg.types.LispAddressWriter; |
| 25 | import org.onosproject.lisp.msg.types.LispAfiAddress; |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 26 | import org.slf4j.Logger; |
| 27 | import org.slf4j.LoggerFactory; |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 28 | |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 29 | import java.util.Objects; |
| 30 | |
| 31 | import static com.google.common.base.MoreObjects.toStringHelper; |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 32 | import static org.onosproject.lisp.msg.types.lcaf.LispCanonicalAddressFormatEnum.APPLICATION_DATA; |
| 33 | import static org.onosproject.lisp.msg.types.lcaf.LispCanonicalAddressFormatEnum.LIST; |
| 34 | import static org.onosproject.lisp.msg.types.lcaf.LispCanonicalAddressFormatEnum.NAT; |
| 35 | import static org.onosproject.lisp.msg.types.lcaf.LispCanonicalAddressFormatEnum.SEGMENT; |
| 36 | import static org.onosproject.lisp.msg.types.lcaf.LispCanonicalAddressFormatEnum.SOURCE_DEST; |
| 37 | import static org.onosproject.lisp.msg.types.lcaf.LispCanonicalAddressFormatEnum.TRAFFIC_ENGINEERING; |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 38 | |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 39 | |
| 40 | /** |
| 41 | * LISP Canonical Address Formatted address class. |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 42 | * <p> |
Jian Li | 8fc2d2f | 2016-08-08 14:43:53 +0900 | [diff] [blame] | 43 | * <pre> |
| 44 | * {@literal |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 45 | * 0 1 2 3 |
| 46 | * 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 |
| 47 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 48 | * | AFI = 16387 | Rsvd1 | Flags | |
| 49 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 50 | * | Type | Rsvd2 | Length | |
| 51 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
Jian Li | 8fc2d2f | 2016-08-08 14:43:53 +0900 | [diff] [blame] | 52 | * }</pre> |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 53 | */ |
| 54 | public class LispLcafAddress extends LispAfiAddress { |
| 55 | |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 56 | private static final Logger log = LoggerFactory.getLogger(LispLcafAddress.class); |
| 57 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 58 | private final LispCanonicalAddressFormatEnum lcafType; |
| 59 | private final byte reserved1; |
| 60 | private final byte reserved2; |
| 61 | private final byte flag; |
| 62 | private final short length; |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 63 | |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 64 | private static final int LCAF_AFI_CODE_BYTE_LENGTH = 2; |
| 65 | |
Jian Li | ef0f723 | 2016-11-15 19:55:46 +0900 | [diff] [blame] | 66 | private static final int LENGTH_FIELD_INDEX = 7; |
| 67 | public static final int COMMON_HEADER_SIZE = 8; |
| 68 | |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 69 | /** |
| 70 | * Initializes LCAF address. |
| 71 | * |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 72 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 73 | * @param reserved1 reserved1 field |
| 74 | * @param reserved2 reserved2 field |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 75 | * @param flag flag field |
| 76 | * @param length length field |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 77 | */ |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 78 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 79 | byte reserved1, byte reserved2, byte flag, short length) { |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 80 | super(AddressFamilyIdentifierEnum.LCAF); |
| 81 | this.lcafType = lcafType; |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 82 | this.reserved1 = reserved1; |
| 83 | this.reserved2 = reserved2; |
| 84 | this.flag = flag; |
| 85 | this.length = length; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Initializes LCAF address. |
| 90 | * |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 91 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 92 | * @param reserved2 reserved2 field |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 93 | * @param flag flag field |
| 94 | * @param length length field |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 95 | */ |
| 96 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 97 | byte reserved2, byte flag, short length) { |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 98 | super(AddressFamilyIdentifierEnum.LCAF); |
| 99 | this.lcafType = lcafType; |
| 100 | this.reserved2 = reserved2; |
| 101 | this.flag = flag; |
| 102 | this.length = length; |
| 103 | this.reserved1 = 0; |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Initializes LCAF address. |
| 108 | * |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 109 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 110 | * @param reserved2 reserved2 field |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 111 | * @param length length field |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 112 | */ |
| 113 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 114 | byte reserved2, short length) { |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 115 | super(AddressFamilyIdentifierEnum.LCAF); |
| 116 | this.lcafType = lcafType; |
| 117 | this.reserved2 = reserved2; |
| 118 | this.length = length; |
| 119 | this.reserved1 = 0; |
| 120 | this.flag = 0; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Initializes LCAF address. |
| 125 | * |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 126 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 127 | * @param reserved2 reserved2 field |
| 128 | */ |
| 129 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, byte reserved2) { |
| 130 | super(AddressFamilyIdentifierEnum.LCAF); |
| 131 | this.lcafType = lcafType; |
| 132 | this.reserved2 = reserved2; |
| 133 | this.reserved1 = 0; |
| 134 | this.flag = 0; |
| 135 | this.length = 0; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Initializes LCAF address. |
| 140 | * |
| 141 | * @param lcafType LCAF type |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 142 | * @param length length field |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 143 | */ |
| 144 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, short length) { |
| 145 | super(AddressFamilyIdentifierEnum.LCAF); |
| 146 | this.lcafType = lcafType; |
| 147 | this.reserved1 = 0; |
| 148 | this.reserved2 = 0; |
| 149 | this.flag = 0; |
| 150 | this.length = length; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Initializes LCAF address. |
| 155 | * |
| 156 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 157 | */ |
| 158 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType) { |
| 159 | super(AddressFamilyIdentifierEnum.LCAF); |
| 160 | this.lcafType = lcafType; |
| 161 | this.reserved1 = 0; |
| 162 | this.reserved2 = 0; |
| 163 | this.flag = 0; |
| 164 | this.length = 0; |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Obtains LCAF type. |
| 169 | * |
| 170 | * @return LCAF type |
| 171 | */ |
| 172 | public LispCanonicalAddressFormatEnum getType() { |
| 173 | return lcafType; |
| 174 | } |
| 175 | |
| 176 | /** |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 177 | * Obtains LCAF reserved1 value. |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 178 | * |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 179 | * @return LCAF reserved1 value |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 180 | */ |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 181 | public byte getReserved1() { |
| 182 | return reserved1; |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Obtains LCAF reserved2 value. |
| 187 | * |
| 188 | * @return LCAF reserved2 value |
| 189 | */ |
| 190 | public byte getReserved2() { |
| 191 | return reserved2; |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Obtains LCAF flag value. |
| 196 | * |
| 197 | * @return LCAF flag value |
| 198 | */ |
| 199 | public byte getFlag() { |
| 200 | return flag; |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Obtains LCAF length value. |
| 205 | * |
| 206 | * @return LCAF length value |
| 207 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 208 | public short getLength() { |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 209 | return length; |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 210 | } |
| 211 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 212 | /** |
| 213 | * Deserializes common fields from byte buffer. |
| 214 | * |
| 215 | * @param byteBuf byte buffer |
| 216 | * @return LispLcafAddress with filled common data fields |
| 217 | */ |
| 218 | public static LispLcafAddress deserializeCommon(ByteBuf byteBuf) { |
| 219 | |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 220 | // let's skip first and second two bytes
, |
| 221 | // because it represents LCAF AFI code |
| 222 | byteBuf.skipBytes(LCAF_AFI_CODE_BYTE_LENGTH); |
| 223 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 224 | // reserved1 -> 8 bits |
| 225 | byte reserved1 = (byte) byteBuf.readUnsignedByte(); |
| 226 | |
| 227 | // flags -> 8 bits |
| 228 | byte flag = (byte) byteBuf.readUnsignedByte(); |
| 229 | |
| 230 | // LCAF type -> 8 bits |
| 231 | byte lcafType = (byte) byteBuf.readUnsignedByte(); |
| 232 | |
| 233 | // reserved2 -> 8bits |
| 234 | byte reserved2 = (byte) byteBuf.readUnsignedByte(); |
| 235 | |
| 236 | // length -> 16 bits |
| 237 | short length = (short) byteBuf.readUnsignedShort(); |
| 238 | |
| 239 | return new LispLcafAddress(LispCanonicalAddressFormatEnum.valueOf(lcafType), |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 240 | reserved1, reserved2, flag, length); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 241 | } |
| 242 | |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 243 | /** |
Jian Li | ef0f723 | 2016-11-15 19:55:46 +0900 | [diff] [blame] | 244 | * Updates the header length field value based on the size of LISP header. |
| 245 | * |
| 246 | * @param lcafIndex the index of LCAF address, because LCAF address is |
| 247 | * contained inside LISP control message, so to correctly |
| 248 | * find the right LCAF length index, we need to know the |
| 249 | * absolute lcaf index inside LISP control message byte buf |
| 250 | * @param byteBuf netty byte buffer |
| 251 | */ |
| 252 | public static void updateLength(int lcafIndex, ByteBuf byteBuf) { |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 253 | byteBuf.setByte(lcafIndex + LENGTH_FIELD_INDEX, |
| 254 | byteBuf.writerIndex() - COMMON_HEADER_SIZE - lcafIndex); |
Jian Li | ef0f723 | 2016-11-15 19:55:46 +0900 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | /** |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 258 | * Serializes common fields to byte buffer. |
| 259 | * |
| 260 | * @param byteBuf byte buffer |
| 261 | * @param address LISP LCAF address instance |
| 262 | */ |
| 263 | public static void serializeCommon(ByteBuf byteBuf, LispLcafAddress address) { |
Jian Li | ef0f723 | 2016-11-15 19:55:46 +0900 | [diff] [blame] | 264 | |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 265 | byteBuf.writeShort(AddressFamilyIdentifierEnum.LCAF.getIanaCode()); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 266 | byteBuf.writeByte(address.getReserved1()); |
| 267 | byteBuf.writeByte(address.getFlag()); |
| 268 | byteBuf.writeByte(address.getType().getLispCode()); |
| 269 | byteBuf.writeByte(address.getReserved2()); |
| 270 | byteBuf.writeShort(address.getLength()); |
| 271 | } |
| 272 | |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 273 | @Override |
| 274 | public int hashCode() { |
Jian Li | d56f97e | 2016-07-19 15:48:15 +0900 | [diff] [blame] | 275 | return Objects.hash(lcafType, reserved1, reserved2, flag, length); |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | @Override |
| 279 | public boolean equals(Object obj) { |
| 280 | if (this == obj) { |
| 281 | return true; |
| 282 | } |
| 283 | |
| 284 | if (obj instanceof LispLcafAddress) { |
| 285 | final LispLcafAddress other = (LispLcafAddress) obj; |
| 286 | return Objects.equals(this.lcafType, other.lcafType) && |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 287 | Objects.equals(this.reserved1, other.reserved1) && |
| 288 | Objects.equals(this.reserved2, other.reserved2) && |
| 289 | Objects.equals(this.flag, other.flag) && |
| 290 | Objects.equals(this.length, other.length); |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 291 | } |
| 292 | return false; |
| 293 | } |
| 294 | |
| 295 | @Override |
| 296 | public String toString() { |
| 297 | return toStringHelper(this) |
| 298 | .add("lcafType", lcafType) |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 299 | .add("reserved1", reserved1) |
| 300 | .add("reserved2", reserved2) |
| 301 | .add("flag", flag) |
| 302 | .add("length", length) |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 303 | .toString(); |
| 304 | } |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 305 | |
| 306 | protected static class LcafAddressBuilder<T> { |
| 307 | |
| 308 | protected byte reserved1; |
| 309 | protected byte flag; |
| 310 | protected byte lcafType; |
| 311 | protected byte reserved2; |
| 312 | protected short length; |
| 313 | |
| 314 | /** |
| 315 | * Sets reserved1 value. |
| 316 | * |
| 317 | * @param reserved1 reserved1 value |
| 318 | * @return LcafAddressBuilder object |
| 319 | */ |
| 320 | public T withReserved1(byte reserved1) { |
| 321 | this.reserved1 = reserved1; |
| 322 | return (T) this; |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Sets flag. |
| 327 | * |
| 328 | * @param flag flag boolean |
| 329 | * @return LcafAddressBuilder object |
| 330 | */ |
| 331 | public T withFlag(byte flag) { |
| 332 | this.flag = flag; |
| 333 | return (T) this; |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * Sets LCAF type. |
| 338 | * |
| 339 | * @param lcafType LCAF type |
| 340 | * @return LcafAddressBuilder object |
| 341 | */ |
| 342 | public T withLcafType(byte lcafType) { |
| 343 | this.lcafType = lcafType; |
| 344 | return (T) this; |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * Sets reserved2 value. |
| 349 | * |
| 350 | * @param reserved2 reserved2 value |
| 351 | * @return LcafAddressBuilder object |
| 352 | */ |
| 353 | public T withReserved2(byte reserved2) { |
| 354 | this.reserved2 = reserved2; |
| 355 | return (T) this; |
| 356 | } |
| 357 | |
| 358 | /** |
| 359 | * Sets length value. |
| 360 | * |
| 361 | * @param length length value |
| 362 | * @return LcafAddressBuilder object |
| 363 | */ |
| 364 | public T withLength(short length) { |
| 365 | this.length = length; |
| 366 | return (T) this; |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * Builds LispLcafAddress object. |
| 371 | * |
| 372 | * @return LispLcafAddress instance |
| 373 | */ |
| 374 | public LispLcafAddress build() { |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 375 | return new LispLcafAddress(LispCanonicalAddressFormatEnum |
| 376 | .valueOf(lcafType), |
| 377 | reserved1, reserved2, flag, length); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 378 | } |
| 379 | } |
| 380 | |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 381 | /** |
| 382 | * LISP LCAF reader class. |
| 383 | */ |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 384 | public static class LcafAddressReader |
| 385 | implements LispAddressReader<LispLcafAddress> { |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 386 | |
| 387 | private static final int LCAF_TYPE_FIELD_INDEX = 4; |
| 388 | |
| 389 | @Override |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 390 | public LispLcafAddress readFrom(ByteBuf byteBuf) |
| 391 | throws LispParseError, LispReaderException { |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 392 | |
| 393 | int index = byteBuf.readerIndex(); |
| 394 | |
| 395 | // LCAF type -> 8 bits |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 396 | byte lcafType = (byte) byteBuf.getUnsignedByte(index + LCAF_TYPE_FIELD_INDEX); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 397 | |
| 398 | if (lcafType == APPLICATION_DATA.getLispCode()) { |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 399 | return new LispAppDataLcafAddress.AppDataLcafAddressReader().readFrom(byteBuf); |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 400 | } |
| 401 | |
| 402 | if (lcafType == NAT.getLispCode()) { |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 403 | return new LispNatLcafAddress.NatLcafAddressReader().readFrom(byteBuf); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | if (lcafType == LIST.getLispCode()) { |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 407 | return new LispListLcafAddress.ListLcafAddressReader().readFrom(byteBuf); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | if (lcafType == SEGMENT.getLispCode()) { |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 411 | return new LispSegmentLcafAddress.SegmentLcafAddressReader().readFrom(byteBuf); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | if (lcafType == SOURCE_DEST.getLispCode()) { |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 415 | return new LispSourceDestLcafAddress.SourceDestLcafAddressReader().readFrom(byteBuf); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 416 | } |
| 417 | |
Jian Li | 99f83ef | 2016-11-03 19:14:25 +0100 | [diff] [blame] | 418 | if (lcafType == TRAFFIC_ENGINEERING.getLispCode()) { |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 419 | return new LispTeLcafAddress.TeLcafAddressReader().readFrom(byteBuf); |
Jian Li | 99f83ef | 2016-11-03 19:14:25 +0100 | [diff] [blame] | 420 | } |
| 421 | |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 422 | log.warn("Unsupported LCAF type, please specify a correct LCAF type"); |
| 423 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 424 | return null; |
| 425 | } |
| 426 | } |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 427 | |
| 428 | /** |
| 429 | * LISP LCAF address writer class. |
| 430 | */ |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 431 | public static class LcafAddressWriter |
| 432 | implements LispAddressWriter<LispLcafAddress> { |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 433 | |
| 434 | @Override |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 435 | public void writeTo(ByteBuf byteBuf, LispLcafAddress address) |
| 436 | throws LispWriterException { |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 437 | switch (address.getType()) { |
| 438 | case APPLICATION_DATA: |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 439 | new LispAppDataLcafAddress.AppDataLcafAddressWriter().writeTo(byteBuf, |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 440 | (LispAppDataLcafAddress) address); |
| 441 | break; |
| 442 | case NAT: |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 443 | new LispNatLcafAddress.NatLcafAddressWriter().writeTo(byteBuf, |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 444 | (LispNatLcafAddress) address); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 445 | break; |
| 446 | case LIST: |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 447 | new LispListLcafAddress.ListLcafAddressWriter().writeTo(byteBuf, |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 448 | (LispListLcafAddress) address); |
| 449 | break; |
| 450 | case SEGMENT: |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 451 | new LispSegmentLcafAddress.SegmentLcafAddressWriter().writeTo(byteBuf, |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 452 | (LispSegmentLcafAddress) address); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 453 | break; |
| 454 | case SOURCE_DEST: |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 455 | new LispSourceDestLcafAddress.SourceDestLcafAddressWriter().writeTo(byteBuf, |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 456 | (LispSourceDestLcafAddress) address); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 457 | break; |
Jian Li | 99f83ef | 2016-11-03 19:14:25 +0100 | [diff] [blame] | 458 | case TRAFFIC_ENGINEERING: |
Jian Li | f31019a | 2017-02-05 07:57:46 +0900 | [diff] [blame] | 459 | new LispTeLcafAddress.TeLcafAddressWriter().writeTo(byteBuf, |
Jian Li | 99f83ef | 2016-11-03 19:14:25 +0100 | [diff] [blame] | 460 | (LispTeLcafAddress) address); |
| 461 | break; |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 462 | default: |
| 463 | log.warn("Unsupported LCAF type, please specify a correct LCAF type"); |
| 464 | break; |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 465 | } |
| 466 | } |
| 467 | } |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 468 | } |