NetmonBluetooth.java

/*
 * Copyright  1990-2009 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation. 
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt). 
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA 
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions. 
 */

package com.sun.jsr082.bluetooth.kvem.impl;

import javax.bluetooth.DataElement;
import javax.bluetooth.ServiceRecord;
import javax.bluetooth.UUID;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Enumeration;

/*
 * Provides jsr082 native netmon functions for ServiceRecord transfering.
 *
 */
public final class NetmonBluetooth {

    /* Update netmon version of service record (send data). */
    private static native void updateServiceRecord(
            int id, byte[] rec, int offset, int length);

    /* Update netmon version of service record, prepare data. */
    public static void notifierUpdateServiceRecord(int netmonId,
            ServiceRecord rec) {
        try {
            ByteArrayOutputStream o = new ByteArrayOutputStream();
            DataOutputStream out = new DataOutputStream(o);
            int ids[] = rec.getAttributeIDs();
            for(int i = 0; i < ids.length; i++) {
                int id = ids[i];
                out.writeInt(id);
                write(out, rec.getAttributeValue(id));
            }
            byte[] array = o.toByteArray();
            updateServiceRecord(netmonId, array, 0, array.length);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /* Encode DataElement into out DataOutputStream. */
    private static void write(DataOutputStream out, DataElement el)
            throws IOException {
        int type = el.getDataType();
        out.writeInt(type);
        switch (type) {
            case DataElement.U_INT_1:
            case DataElement.U_INT_2:
            case DataElement.U_INT_4:
            case DataElement.INT_1:
            case DataElement.INT_2:
            case DataElement.INT_4:
            case DataElement.INT_8:
                out.writeLong(el.getLong());
                break;
            case DataElement.BOOL:
                out.writeBoolean(el.getBoolean());
                break;
            case DataElement.U_INT_8:
            case DataElement.U_INT_16:
            case DataElement.INT_16:
                byte[] data = (byte[]) el.getValue();
                out.write(data);
                break;
            case DataElement.NULL:
                break;
            case DataElement.STRING:
            case DataElement.URL:
                out.writeUTF((String) el.getValue());
                break;
            case DataElement.UUID:
                out.writeUTF(((UUID)el.getValue()).toString());
                break;
            case DataElement.DATALT:
            case DataElement.DATSEQ:
                for (Enumeration e = (Enumeration) el.getValue();
                        e.hasMoreElements();) {
                    write(out, (DataElement) e.nextElement());
                }
                // end of list marker
                out.writeInt(-1);
        }
    }
}