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doip sdk developed by bdware

There is a newer version: 1.5.7

/*
 *    Copyright (c) [2021] [Peking University]
 *    [BDWare DOIP SDK] is licensed under Mulan PSL v2.
 *    You can use this software according to the terms and conditions of the Mulan PSL v2.
 *    You may obtain a copy of Mulan PSL v2 at:
 *             http://license.coscl.org.cn/MulanPSL2
 *    THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 *    See the Mulan PSL v2 for more details.
 */

package org.bdware.doip.codec.doipMessage;


public class MessageHeader {

    public boolean IsRequest;

    private int flag;
    public int parameterLength;
    public int bodyLength;

    public HeaderParameter parameters;

    private transient boolean isRequest = false;
    private transient boolean isCertified = false;
    // !IMPORTANT!
    // isEncrypted is defined in message envelop!
    private transient boolean isEncrypted = false;

    public MessageHeader(String id, String opCode) {
        flag = 0;
        parameters = new HeaderParameter(id, opCode);
        parameterLength = parameters.length();
    }

    public MessageHeader(String id, String opCode, int f) {
        this.setFlag(f);
        parameters = new HeaderParameter(id, opCode);
        parameterLength = parameters.length();
    }

    private boolean isRequest0() {
        return (this.flag & 0x80000000) != 0;
    }

    private boolean isCertified0() {
        return (this.flag & 0x40000000) != 0;
    }

    public boolean isRequest() {
        return isRequest;
    }

    public boolean isCertified() {
        return isCertified;
    }

    public boolean isEncrypted() {
        return isEncrypted;
    }

    public void setIsRequest(boolean isRequest) {
        this.isRequest = isRequest;
        updateFlag();
    }

    public void setIsEncrypted(boolean isEncrypted) {
        this.isEncrypted = isEncrypted;
    }

    public void setIsCertified(boolean isCertified) {
        this.isCertified = isCertified;
        updateFlag();
    }

    public void setFlag(int f) {
        this.flag = f;
        if (isRequest0()) isRequest = true;
        if (isCertified0()) isCertified = true;
    }


    public int getFlag() {
        return this.flag;
    }

    private void updateFlag() {
        this.flag = 0;
        if (isRequest) this.flag = (this.flag | 0x80000000);
        if (isCertified) this.flag = (this.flag | 0x40000000);
    }

}