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pcapng file parser
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/*
 * 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;

import fr.bmartel.pcapdecoder.structure.BlockTypes;
import fr.bmartel.pcapdecoder.structure.options.impl.OptionsEnhancedHeader;
import fr.bmartel.pcapdecoder.structure.options.impl.OptionsInterfaceDescriptionHeader;
import fr.bmartel.pcapdecoder.structure.options.impl.OptionsInterfaceStatisticsHeader;
import fr.bmartel.pcapdecoder.structure.options.impl.OptionsNameResolutionHeader;
import fr.bmartel.pcapdecoder.structure.options.impl.OptionsRecordNameResolutionHeader;
import fr.bmartel.pcapdecoder.structure.options.impl.OptionsSectionHeader;
import fr.bmartel.pcapdecoder.structure.options.inter.IOptions;
import fr.bmartel.pcapdecoder.structure.options.inter.IOptionsRecordNameResolution;
import fr.bmartel.pcapdecoder.structure.options.object.OptionsRecordNameResolutionObject;

/**
 * Pcap ng options field
 * 
 * 0                   1                   2                   3
 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |      Option Code              |         Option Length         |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * /                       Option Value                            /
 * /             variable length, aligned to 32 bits               /
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * /                                                               /
 * /                 . . . other options . . .                     /
 * /                                                               /
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |   Option Code == opt_endofopt  |  Option Length == 0          |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *
 * @author Bertrand Martel
 */
public class PcapOptions implements IPcapngOptions {

    private int optionCode = -1;

    private int optionLength = -1;

    private byte[] optionValue = null;

    private boolean isBigEndian = true;

    private BlockTypes type = null;

    private IOptions option = null;

    public PcapOptions(int optionCode, int optionLength, byte[] optionValue, boolean isBigEndian, BlockTypes type,
                       IOptions option) {
        this.optionCode = optionCode;
        this.optionLength = optionLength;
        this.optionValue = optionValue;
        this.isBigEndian = isBigEndian;
        this.type = type;
        this.option = option;
    }

    /**
     * Decode given data for optional fields
     */
    public void decode() {
        if (type == BlockTypes.SECTION_HEADER_BLOCK) {
            OptionsSectionHeader optionImpl = new OptionsSectionHeader(optionCode, optionValue, isBigEndian, this
					.option);
        }
        if (type == BlockTypes.INTERFACE_DESCRIPTION_BLOCK) {
            OptionsInterfaceDescriptionHeader optionImpl = new OptionsInterfaceDescriptionHeader(optionCode,
					optionValue, isBigEndian, this.option);
        }
        if (type == BlockTypes.ENHANCES_PACKET_BLOCK) {
            OptionsEnhancedHeader optionImpl = new OptionsEnhancedHeader(optionCode, optionValue, isBigEndian, this
					.option);
        }
        if (type == BlockTypes.INTERFACE_STATISTICS_BLOCK) {
            OptionsInterfaceStatisticsHeader optionImpl = new OptionsInterfaceStatisticsHeader(optionCode,
					optionValue, isBigEndian, this.option);
        }
        if (type == BlockTypes.NAME_RESOLUTION_BLOCK) {

            if (option instanceof IOptionsRecordNameResolution) {
                OptionsRecordNameResolutionHeader optionImpl = new OptionsRecordNameResolutionHeader(optionCode,
						optionValue, isBigEndian, this.option);
            } else {
                OptionsNameResolutionHeader optionImpl = new OptionsNameResolutionHeader(optionCode, optionValue,
						isBigEndian, this.option);
            }
        }
    }

    @Override
    public int getOptionCode() {
        return optionCode;
    }

    @Override
    public int getOptionLength() {
        return optionLength;
    }

    @Override
    public byte[] getOptionValue() {
        return optionValue;
    }

    public boolean isBigEndian() {
        return isBigEndian;
    }

    public BlockTypes getType() {
        return type;
    }
}