org.ambud.marauder.source.ids.pcap.layer3.ARP.java Source code

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Here is the source code for org.ambud.marauder.source.ids.pcap.layer3.ARP.java

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/*
 * Copyright 2013 Ambud Sharma
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.2
 */
package org.ambud.marauder.source.ids.pcap.layer3;

import java.io.DataInput;
import java.io.IOException;

import org.ambud.marauder.source.ids.pcap.layer2.EtherFrame;
import org.apache.commons.codec.binary.Hex;

public class ARP extends NetworkLayer {

    private short hardType, protoType;
    private byte hardSize, protoAddrSize;
    private short opCode;
    private byte[] senderEthAddr = new byte[EtherFrame.ETHER_ADDR_SIZE];
    private int senderIP;
    private byte[] targetEthAddr = new byte[EtherFrame.ETHER_ADDR_SIZE];
    private int targetIP;

    private EtherFrame parent;

    public ARP() {
    }

    @Override
    public void decode(DataInput di, EtherFrame parent) throws IOException {
        this.parent = parent;
        this.hardType = di.readShort();
        this.protoType = di.readShort();
        this.hardSize = di.readByte();
        this.protoAddrSize = di.readByte();
        this.opCode = di.readShort();
        di.readFully(senderEthAddr);
        this.senderIP = di.readInt();
        di.readFully(targetEthAddr);
        this.targetIP = di.readInt();
    }

    /**
     * @return the hardType
     */
    public short getHardType() {
        return hardType;
    }

    /**
     * @param hardType the hardType to set
     */
    public void setHardType(short hardType) {
        this.hardType = hardType;
    }

    /**
     * @return the protoType
     */
    public short getProtoType() {
        return protoType;
    }

    /**
     * @param protoType the protoType to set
     */
    public void setProtoType(short protoType) {
        this.protoType = protoType;
    }

    /**
     * @return the hardSize
     */
    public byte getHardSize() {
        return hardSize;
    }

    /**
     * @param hardSize the hardSize to set
     */
    public void setHardSize(byte hardSize) {
        this.hardSize = hardSize;
    }

    /**
     * @return the protoAddrSize
     */
    public byte getProtoAddrSize() {
        return protoAddrSize;
    }

    /**
     * @param protoAddrSize the protoAddrSize to set
     */
    public void setProtoAddrSize(byte protoAddrSize) {
        this.protoAddrSize = protoAddrSize;
    }

    /**
     * @return the opCode
     */
    public short getOpCode() {
        return opCode;
    }

    /**
     * @param opCode the opCode to set
     */
    public void setOpCode(short opCode) {
        this.opCode = opCode;
    }

    /**
     * @return the senderEthAddr
     */
    public byte[] getSenderEthAddr() {
        return senderEthAddr;
    }

    /**
     * @param senderEthAddr the senderEthAddr to set
     */
    public void setSenderEthAddr(byte[] senderEthAddr) {
        this.senderEthAddr = senderEthAddr;
    }

    /**
     * @return the senderIP
     */
    public int getSenderIP() {
        return senderIP;
    }

    /**
     * @param senderIP the senderIP to set
     */
    public void setSenderIP(int senderIP) {
        this.senderIP = senderIP;
    }

    /**
     * @return the targetEthAddr
     */
    public byte[] getTargetEthAddr() {
        return targetEthAddr;
    }

    /**
     * @param targetEthAddr the targetEthAddr to set
     */
    public void setTargetEthAddr(byte[] targetEthAddr) {
        this.targetEthAddr = targetEthAddr;
    }

    /**
     * @return the targetIP
     */
    public int getTargetIP() {
        return targetIP;
    }

    /**
     * @param targetIP the targetIP to set
     */
    public void setTargetIP(int targetIP) {
        this.targetIP = targetIP;
    }

    /**
     * @return the ethernetAddrSize
     */
    public static int getEthernetAddrSize() {
        return EtherFrame.ETHER_ADDR_SIZE;
    }

    @Override
    public String toString() {
        return "Sender:" + IPv4.intToStringIP(senderIP) + "/" + Hex.encodeHexString(senderEthAddr) + " Target:"
                + IPv4.intToStringIP(targetIP) + "/" + Hex.encodeHexString(targetEthAddr) + " Proto:" + protoType;
    }

    @Override
    public NETWORK_LAYER_TYPE getType() {
        return NETWORK_LAYER_TYPE.ARP;
    }

    @Override
    public Integer getSourceAddr() {
        return senderIP;
    }

    @Override
    public Integer getDestinationAddr() {
        return targetIP;
    }

    @Override
    public byte getVersion() {
        return 0;// not supported
    }

    @Override
    public byte getNextProto() {
        return 0;// not supported
    }

    @Override
    public EtherFrame getParent() {
        return parent;
    }

}