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The app library component of SDL is meant to run on the end userâs smart-device from within SDL enabled apps, as an embedded app, or connected to the cloud. App libraries allow the apps to connect to SDL enabled head-units and hardware through bluetooth, USB, and TCP for Android, and cloud and embedded apps can connect through web sockets, Java Beans, and other custom transports. Once the library establishes a connection between the smart device and head-unit through the preferred method of transport, the two components are able to communicate using the SDL defined protocol. The app integrating this library project is then able to expose its functionality to the head-unit through text, media, and other interactive elements.

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package com.smartdevicelink.protocol.enums;

import androidx.annotation.RestrictTo;

import com.smartdevicelink.util.BitConverter;

import java.util.Arrays;
import java.util.Enumeration;
import java.util.Objects;
import java.util.Vector;

@RestrictTo(RestrictTo.Scope.LIBRARY)
public class SecurityQueryID {

    private static final Vector theList = new Vector<>();

    public static Vector getList() {
        return theList;
    }

    private static final byte[] sendHandshakeDataByteArray = {(byte) 0x00, (byte) 0x00, (byte) 0x01};
    private static final byte[] sendInternalErrorByteArray = {(byte) 0x00, (byte) 0x00, (byte) 0x02};
    private static final byte[] invalidQueryIdByteArray = {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
    public final static SecurityQueryID SEND_HANDSHAKE_DATA = new SecurityQueryID(sendHandshakeDataByteArray, "SEND_HANDSHAKE_DATA");
    public final static SecurityQueryID SEND_INTERNAL_ERROR = new SecurityQueryID(sendInternalErrorByteArray, "SEND_INTERNAL_ERROR");
    public final static SecurityQueryID INVALID_QUERY_ID = new SecurityQueryID(invalidQueryIdByteArray, "INVALID_QUERY_ID");

    static {
        theList.addElement(SEND_HANDSHAKE_DATA);
        theList.addElement(SEND_INTERNAL_ERROR);
        theList.addElement(INVALID_QUERY_ID);
    }

    protected SecurityQueryID(byte[] value, String name) {
        this.value = value;
        this.name = name;
    }

    private final byte[] value;
    private final String name;

    public byte[] getValue() {
        return value;
    }

    public int getIntValue() {
        byte[] copy = new byte[4];
        System.arraycopy(value, 0, copy, 1, 3);
        return BitConverter.intFromByteArray(copy, 0);
    }

    public String getName() {
        return name;
    }

    public boolean equals(SecurityQueryID other) {
        return Objects.equals(name, other.getName());
    }

    public boolean eq(SecurityQueryID other) {
        return equals(other);
    }

    public byte[] value() {
        return value;
    }

    public static SecurityQueryID get(Vector theList, byte[] value) {
        Enumeration enumer = theList.elements();
        while (enumer.hasMoreElements()) {
            try {
                SecurityQueryID current = (SecurityQueryID) enumer.nextElement();
                if (Arrays.equals(current.getValue(), value)) {
                    return current;
                }
            } catch (ClassCastException e) {
                return null;
            }
        }
        return null;
    }

    public static SecurityQueryID get(Vector theList, String name) {
        Enumeration enumer = theList.elements();
        while (enumer.hasMoreElements()) {
            try {
                SecurityQueryID current = (SecurityQueryID) enumer.nextElement();
                if (current.getName().equals(name)) {
                    return current;
                }
            } catch (ClassCastException e) {
                return null;
            }
        }
        return null;
    }

    public static SecurityQueryID valueOf(byte[] passedByteArray) {
        return (SecurityQueryID) get(theList, passedByteArray);
    }

    public static SecurityQueryID[] values() {
        return theList.toArray(new SecurityQueryID[theList.size()]);
    }
}