fr.bmartel.pcapdecoder.structure.options.impl.OptionsInterfaceDescriptionHeader Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of pcapngdecoder Show documentation
pcapng file parser
The newest version!
/*
 * The MIT License (MIT)
 * 
 * Copyright (c) 2015-2016 Bertrand Martel
 * 

 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 

 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package fr.bmartel.pcapdecoder.structure.options.impl;

import java.io.UnsupportedEncodingException;
import java.util.Arrays;

import fr.bmartel.pcapdecoder.network.NetworkUtils;
import fr.bmartel.pcapdecoder.structure.options.abstr.OptionsAbstr;
import fr.bmartel.pcapdecoder.structure.options.inter.IOptions;
import fr.bmartel.pcapdecoder.structure.options.object.OptionInterfaceDescriptionObject;
import fr.bmartel.pcapdecoder.utils.UtilFunctions;

/**
 * Implementation for Options in Interface Description Header
 *
 * @author Bertrand Martel
 */
public class OptionsInterfaceDescriptionHeader extends OptionsAbstr {

    private OptionInterfaceDescriptionObject commonObject = null;

    public OptionsInterfaceDescriptionHeader(int optionCode, byte[] data, boolean isBigEndian, IOptions currentOption) {
        super(optionCode, data, isBigEndian, currentOption);
        this.commonObject = (OptionInterfaceDescriptionObject) currentOption;

        decode();
    }

    public void decode() {
        try {
            switch (optionCode) {
                case 1:
                    if (!isBigEndian)
                        this.commonObject.setComment(new String(UtilFunctions.convertLeToBe(data), "UTF-8"));
                    else
                        this.commonObject.setComment(new String(data, "UTF-8"));
                    break;
                case 2:
                    //interface name
                    if (!isBigEndian)
                        this.commonObject.setInterfaceName(new String(UtilFunctions.convertLeToBe(data), "UTF-8"));
                    else
                        this.commonObject.setInterfaceName(new String(data, "UTF-8"));
                    break;
                case 3:
                    //interface description
                    if (!isBigEndian)
                        this.commonObject.setInterfaceDescription(new String(UtilFunctions.convertLeToBe(data),
                                "UTF-8"));
                    else
                        this.commonObject.setInterfaceDescription(new String(data, "UTF-8"));
                    break;
                case 4:
                    //interface network following by netmask
                    byte[] interfaceAddr = new byte[4];
                    byte[] netmask = new byte[4];
                    if (!isBigEndian) {
                        interfaceAddr = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 4));
                        netmask = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 4, 8));
                    } else {
                        interfaceAddr = Arrays.copyOfRange(data, 0, 4);
                        netmask = Arrays.copyOfRange(data, 4, 8);
                    }

                    this.commonObject.setInterfaceIpv4NetworkAddr(NetworkUtils.formatIpv4Addr(interfaceAddr));
                    this.commonObject.setInterfaceNetmask(NetworkUtils.formatIpv4Addr(netmask));


                    break;
                case 5:
                    byte[] interfaceIpv6Addr = new byte[17];
                    if (!isBigEndian)
                        interfaceIpv6Addr = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 17));
                    else
                        interfaceIpv6Addr = Arrays.copyOfRange(data, 0, 17);

                    this.commonObject.setInterfaceIpv6NetworkAddr(NetworkUtils.formatIpv6AddrWithPort
                            (interfaceIpv6Addr));

                    break;
                case 6:
                    byte[] macAddr = new byte[6];
                    if (!isBigEndian)
                        macAddr = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 6));
                    else
                        macAddr = Arrays.copyOfRange(data, 0, 6);

                    this.commonObject.setInterfaceMacAddr(NetworkUtils.formatMacAddr(macAddr));
                    break;
                case 7:
                    byte[] euiAddr = new byte[8];
                    if (!isBigEndian)
                        euiAddr = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 8));
                    else
                        euiAddr = Arrays.copyOfRange(data, 0, 8);

                    this.commonObject.setInterfaceEuiAddr(NetworkUtils.formatMacAddr(euiAddr));
                    break;
                case 8:
                    byte[] speed = new byte[8];
                    if (!isBigEndian)
                        speed = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 8));
                    else
                        speed = Arrays.copyOfRange(data, 0, 8);

                    this.commonObject.setInterfaceSpeed(UtilFunctions.convertByteArrayToInt(speed));

                    break;
                case 9:
                    byte timeResolution = 0;
                    timeResolution = data[0];

                    this.commonObject.setTimestampResolution(timeResolution & 0xFF);

                    break;
                case 10:
                    byte[] biasTime = new byte[8];
                    if (!isBigEndian)
                        biasTime = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 4));
                    else
                        biasTime = Arrays.copyOfRange(data, 0, 4);

                    this.commonObject.setTimeBias(UtilFunctions.convertByteArrayToInt(biasTime));

                    break;
                case 11:
                    if (!isBigEndian)
                        this.commonObject.setInterfaceFilter(new String(UtilFunctions.convertLeToBe(data), "UTF-8"));
                    else
                        this.commonObject.setInterfaceFilter(new String(data, "UTF-8"));
                    break;
                case 12:
                    if (!isBigEndian)
                        this.commonObject.setInterfaceOperatingSystem(new String(UtilFunctions.convertLeToBe(data),
                                "UTF-8"));
                    else
                        this.commonObject.setInterfaceOperatingSystem(new String(data, "UTF-8"));
                    break;
                case 13:
                    this.commonObject.setInterfaceFrameCheckSequenceLength(data[0] & 0xFF);
                    break;
                case 14:
                    byte[] offsetTime = new byte[8];
                    if (!isBigEndian)
                        offsetTime = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 8));
                    else
                        offsetTime = Arrays.copyOfRange(data, 0, 8);

                    this.commonObject.setPacketOffsetTime(UtilFunctions.convertByteArrayToInt(offsetTime));
                    break;
                default:
                    break;
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
    }
}