1 files changed, 165 insertions, 0 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/packet/LLDPTLV.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/packet/LLDPTLV.java
new file mode 100644
index 00000000..77efe1b7
--- /dev/null
+++ b/framework/src/onos/utils/misc/src/main/java/org/onlab/packet/LLDPTLV.java
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2014 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.onlab.packet;
+
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+
+/**
+ *
+ *
+ */
+public class LLDPTLV {
+    protected byte type;
+    protected short length;
+    protected byte[] value;
+
+    /**
+     * @return the type
+     */
+    public byte getType() {
+        return this.type;
+    }
+
+    /**
+     * @param type
+     *            the type to set
+     * @return this
+     */
+    public LLDPTLV setType(final byte type) {
+        this.type = type;
+        return this;
+    }
+
+    /**
+     * @return the length
+     */
+    public short getLength() {
+        return this.length;
+    }
+
+    /**
+     * @param length
+     *            the length to set
+     * @return this
+     */
+    public LLDPTLV setLength(final short length) {
+        this.length = length;
+        return this;
+    }
+
+    /**
+     * @return the value
+     */
+    public byte[] getValue() {
+        return this.value;
+    }
+
+    /**
+     * @param value
+     *            the value to set
+     * @return this
+     */
+    public LLDPTLV setValue(final byte[] value) {
+        this.value = value;
+        return this;
+    }
+
+    public byte[] serialize() {
+        // type = 7 bits
+        // info string length 9 bits, each value == byte
+        // info string
+        final short scratch = (short) ((0x7f & this.type) << 9 | 0x1ff & this.length);
+        final byte[] data = new byte[2 + this.length];
+        final ByteBuffer bb = ByteBuffer.wrap(data);
+        bb.putShort(scratch);
+        if (this.value != null) {
+            bb.put(this.value);
+        }
+        return data;
+    }
+
+    public LLDPTLV deserialize(final ByteBuffer bb) throws DeserializationException {
+        if (bb.remaining() < 2) {
+            throw new DeserializationException(
+                    "Not enough bytes to deserialize TLV type and length");
+        }
+        short typeLength;
+        typeLength = bb.getShort();
+        this.type = (byte) (typeLength >> 9 & 0x7f);
+        this.length = (short) (typeLength & 0x1ff);
+
+        if (this.length > 0) {
+            this.value = new byte[this.length];
+
+            // if there is an underrun just toss the TLV
+            if (bb.remaining() < this.length) {
+                throw new DeserializationException(
+                        "Remaining bytes are less then the length of the TLV");
+            }
+            bb.get(this.value);
+        }
+
+        return this;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see java.lang.Object#hashCode()
+     */
+    @Override
+    public int hashCode() {
+        final int prime = 1423;
+        int result = 1;
+        result = prime * result + this.length;
+        result = prime * result + this.type;
+        result = prime * result + Arrays.hashCode(this.value);
+        return result;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see java.lang.Object#equals(java.lang.Object)
+     */
+    @Override
+    public boolean equals(final Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (!(obj instanceof LLDPTLV)) {
+            return false;
+        }
+        final LLDPTLV other = (LLDPTLV) obj;
+        if (this.length != other.length) {
+            return false;
+        }
+        if (this.type != other.type) {
+            return false;
+        }
+        if (!Arrays.equals(this.value, other.value)) {
+            return false;
+        }
+        return true;
+    }
+}