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Diffstat (limited to 'framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv6SubObject.java')
| -rw-r--r-- | framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv6SubObject.java | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv6SubObject.java b/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv6SubObject.java new file mode 100644 index 00000000..b3164f26 --- /dev/null +++ b/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv6SubObject.java @@ -0,0 +1,222 @@ +/* + * Copyright 2015 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.pcepio.types; + +import java.util.Arrays; + +import org.jboss.netty.buffer.ChannelBuffer; +import org.onosproject.pcepio.protocol.PcepVersion; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.google.common.base.MoreObjects; +import com.google.common.base.MoreObjects.ToStringHelper; + +/** + * Provides IPv6 Sub Object. + */ +public class IPv6SubObject implements PcepValueType { + + /* reference :RFC 4874. + Subobject : IPv6 address + + 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 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Length | IPv6 address (16 bytes) | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | IPv6 address (continued) | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | IPv6 address (continued) | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | IPv6 address (continued) | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | IPv6 address (continued) | Prefix Length | Flags | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + + Type + + 0x02 IPv6 address + + Length + + The Length contains the total length of the subobject in bytes, + including the Type and Length fields. The Length is always 20. + + IPv6 address + + A 128-bit unicast host address. + + Prefix length + + 128 + + Flags + + 0x01 Local protection available + + Indicates that the link downstream of this node is + protected via a local repair mechanism. This flag can + only be set if the Local protection flag was set in the + SESSION_ATTRIBUTE object of the corresponding Path + message. + + 0x02 Local protection in use + + Indicates that a local repair mechanism is in use to + maintain this tunnel (usually in the face of an outage + of the link it was previously routed over). + */ + protected static final Logger log = LoggerFactory.getLogger(IPv6SubObject.class); + + public static final short TYPE = 0x02; + public static final short LENGTH = 20; + public static final byte VALUE_LENGTH = 18; + + private static final byte[] NONE_VAL = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + public static final IPv6SubObject NONE = new IPv6SubObject(NONE_VAL); + + private static final byte[] NO_MASK_VAL = {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, + (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, + (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF }; + public static final IPv6SubObject NO_MASK = new IPv6SubObject(NO_MASK_VAL); + public static final IPv6SubObject FULL_MASK = NONE; + + private final byte[] rawValue; + + /** + * constructor to initialize rawValue with ipv6 address. + * + * @param rawValue ipv6 address + */ + public IPv6SubObject(byte[] rawValue) { + this.rawValue = rawValue; + } + + /** + * To create instance of IPv6SubObject. + * + * @param raw byte array of ipv6 address + * @return object of IPv6SubObject + */ + public static IPv6SubObject of(final byte[] raw) { + //check NONE_VAL + boolean bFoundNONE = true; + //value starts from 3rd byte. + for (int i = 2; i < 20; ++i) { + if (NONE_VAL[i] != raw[i]) { + bFoundNONE = false; + } + } + + if (bFoundNONE) { + return NONE; + } + + //check NO_MASK_VAL + boolean bFoundNoMask = true; + //value starts from 3rd byte. + for (int i = 2; i < 20; ++i) { + if (0xFF != raw[i]) { + bFoundNoMask = false; + } + } + if (bFoundNoMask) { + return NO_MASK; + } + + return new IPv6SubObject(raw); + } + + /** + * Returns value of IPv6 Sub Object. + * + * @return byte array of ipv6 address + */ + public byte[] getValue() { + return rawValue; + } + + @Override + public PcepVersion getVersion() { + return PcepVersion.PCEP_1; + } + + @Override + public short getType() { + return TYPE; + } + + @Override + public short getLength() { + return LENGTH; + } + + @Override + public int hashCode() { + return Arrays.hashCode(rawValue); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj instanceof IPv6SubObject) { + IPv6SubObject other = (IPv6SubObject) obj; + return Arrays.equals(rawValue, other.rawValue); + } + return false; + } + + @Override + public int write(ChannelBuffer c) { + int iStartIndex = c.writerIndex(); + c.writeShort(TYPE); + c.writeShort(LENGTH); + c.writeBytes(rawValue); + return c.writerIndex() - iStartIndex; + } + + /** + * Reads the channel buffer and returns object of IPv6SubObject. + * + * @param c type of channel buffer + * @return object of IPv6SubObject + */ + public static IPv6SubObject read20Bytes(ChannelBuffer c) { + byte[] yTemp = new byte[20]; + c.readBytes(yTemp, 0, 20); + return IPv6SubObject.of(yTemp); + } + + @Override + public String toString() { + ToStringHelper toStrHelper = MoreObjects.toStringHelper(getClass()); + + toStrHelper.add("Type", TYPE); + toStrHelper.add("Length", LENGTH); + + StringBuffer result = new StringBuffer(); + for (byte b : rawValue) { + result.append(String.format("%02X ", b)); + } + toStrHelper.add("Value", result); + + return toStrHelper.toString(); + } +} |