added arputil module

[vpnservice.git] / arputil / arputil-impl / src / main / java / org / opendaylight / vpnservice / arputil / internal / ArpPacketUtil.java

diff --git a/arputil/arputil-impl/src/main/java/org/opendaylight/vpnservice/arputil/internal/ArpPacketUtil.java b/arputil/arputil-impl/src/main/java/org/opendaylight/vpnservice/arputil/internal/ArpPacketUtil.java
new file mode 100644 (file)
index 0000000..46af8e8
--- /dev/null
+++ b/arputil/arputil-impl/src/main/java/org/opendaylight/vpnservice/arputil/internal/ArpPacketUtil.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2015 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.vpnservice.arputil.internal;
+
+import org.opendaylight.controller.liblldp.EtherTypes;
+import org.opendaylight.controller.liblldp.PacketException;
+import org.opendaylight.vpnservice.mdsalutil.packet.ARP;
+import org.opendaylight.vpnservice.mdsalutil.packet.Ethernet;
+
+public class ArpPacketUtil {
+
+    public static byte[] EthernetDestination_Broadcast = new byte[] { (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+            (byte) 0xFF, (byte) 0xFF, (byte) 0xFF };
+    public static byte[] MAC_Broadcast = new byte[] { (byte) 0, (byte) 0, (byte) 0, (byte) 0, (byte) 0, (byte) 0 };
+
+    public static byte[] getPayload(short opCode, byte[] senderMacAddress, byte[] senderIP, byte[] targetMacAddress,
+            byte[] targetIP) throws PacketException {
+        ARP arp = createARPPacket(opCode, senderMacAddress, senderIP, targetMacAddress, targetIP);
+        Ethernet ethernet = createEthernetPacket(senderMacAddress, targetMacAddress, arp);
+        return ethernet.serialize();
+    }
+
+    public static ARP createARPPacket(short opCode, byte[] senderMacAddress, byte[] senderIP, byte[] targetMacAddress,
+            byte[] targetIP) {
+        ARP arp = new ARP();
+        arp.setHardwareType(ARP.HW_TYPE_ETHERNET);
+        arp.setProtocolType(EtherTypes.IPv4.shortValue());
+        arp.setHardwareAddressLength((byte) 6);
+        arp.setProtocolAddressLength((byte) 4);
+        arp.setOpCode(opCode);
+        arp.setSenderHardwareAddress(senderMacAddress);
+        arp.setSenderProtocolAddress(senderIP);
+        arp.setTargetHardwareAddress(targetMacAddress);
+        arp.setTargetProtocolAddress(targetIP);
+        return arp;
+    }
+
+    public static Ethernet createEthernetPacket(byte[] sourceMAC, byte[] targetMAC, ARP arp)
+            throws PacketException {
+        Ethernet ethernet = new Ethernet();
+        ethernet.setSourceMACAddress(sourceMAC);
+        ethernet.setDestinationMACAddress(targetMAC);
+        ethernet.setEtherType(EtherTypes.ARP.shortValue());
+        ethernet.setPayload(arp);
+        return ethernet;
+    }
+}
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