fr.bmartel.pcapdecoder.structure.options.impl.OptionsInterfaceStatisticsHeader 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.structure.options.abstr.OptionsAbstr;
import fr.bmartel.pcapdecoder.structure.options.inter.IOptions;
import fr.bmartel.pcapdecoder.structure.options.object.OptionInterfaceStatisticsObject;
import fr.bmartel.pcapdecoder.utils.UtilFunctions;

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

    private OptionInterfaceStatisticsObject commonObject = null;

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

        decode();
    }

    public void decode() {
        try {
            switch (optionCode) {
                case 1:
                    if (!isBigEndian)
                        commonObject.setComment(new String(UtilFunctions.convertLeToBe(data), "UTF-8"));
                    else
                        commonObject.setComment(new String(data, "UTF-8"));
                    break;
                case 2:

                    if (!isBigEndian) {
                        commonObject.setCaptureStartTime(parseTimeStamp(UtilFunctions.convertLeToBe(Arrays
                                .copyOfRange(data, 0, 8))));
                    } else {
                        commonObject.setCaptureStartTime(parseTimeStamp(Arrays.copyOfRange(data, 0, 8)));
                    }
                    break;
                case 3:
                    if (!isBigEndian) {
                        commonObject.setCaptureEndTime(parseTimeStamp(UtilFunctions.convertLeToBe(Arrays.copyOfRange
                                (data, 0, 8))));
                    } else {
                        commonObject.setCaptureEndTime(parseTimeStamp(Arrays.copyOfRange(data, 0, 8)));
                    }
                    break;
                case 4:
                    // this appear to be in Big endian even in Little Endian ! or something is missing in doc
                    /*
					if (!isBigEndian)
						this.commonObject.setPacketReceivedCount(ConvertFunctions.convertByteArrayToLong
						(ConvertFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 8))));
					else*/
                    this.commonObject.setPacketReceivedCount(UtilFunctions.convertByteArrayToLong(Arrays.copyOfRange
                            (data, 0, 8)));
                    break;
                case 5:
                    if (!isBigEndian)
                        this.commonObject.setPacketDropCount(UtilFunctions.convertByteArrayToLong(UtilFunctions
                                .convertLeToBe(Arrays.copyOfRange(data, 0, 8))));
                    else
                        this.commonObject.setPacketDropCount(UtilFunctions.convertByteArrayToLong(Arrays.copyOfRange
                                (data, 0, 8)));
                    break;
                case 6:
                    if (!isBigEndian)
                        this.commonObject.setPacketAcceptedByFilterCount(UtilFunctions.convertByteArrayToLong
                                (UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 8))));
                    else
                        this.commonObject.setPacketAcceptedByFilterCount(UtilFunctions.convertByteArrayToLong(Arrays
                                .copyOfRange(data, 0, 8)));
                    break;
                case 7:
                    if (!isBigEndian)
                        this.commonObject.setPacketDroppedByOS(UtilFunctions.convertByteArrayToLong(UtilFunctions
                                .convertLeToBe(Arrays.copyOfRange(data, 0, 8))));
                    else
                        this.commonObject.setPacketDroppedByOS(UtilFunctions.convertByteArrayToLong(Arrays
                                .copyOfRange(data, 0, 8)));
                    break;
                case 8:
                    if (!isBigEndian)
                        this.commonObject.setPacketDeliveredToUser(UtilFunctions.convertByteArrayToLong(UtilFunctions
                                .convertLeToBe(Arrays.copyOfRange(data, 0, 8))));
                    else
                        this.commonObject.setPacketDeliveredToUser(UtilFunctions.convertByteArrayToLong(Arrays
                                .copyOfRange(data, 0, 8)));
                    break;
                default:
                    break;
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
    }

    private Long parseTimeStamp(byte[] data) {
        byte[] high_timestamp = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 0, 4));
        byte[] low_timestamp = UtilFunctions.convertLeToBe(Arrays.copyOfRange(data, 4, 8));

        byte[] finalTimestamp = new byte[8];
        for (int i = 0; i < 4; i++) {
            finalTimestamp[i] = high_timestamp[i];
        }
        for (int i = 0; i < 4; i++) {
            finalTimestamp[i + 4] = low_timestamp[i];
        }

        Long timestamp = (long) UtilFunctions.convertByteArrayToLong(finalTimestamp);
        return timestamp;
    }
}