Example usage for io.netty.buffer ByteBufUtil hexDump

List of usage examples for io.netty.buffer ByteBufUtil hexDump

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Introduction

In this page you can find the example usage for io.netty.buffer ByteBufUtil hexDump.

Prototype

public static String hexDump(byte[] array)

Source Link

Document

Returns a <a href="http://en.wikipedia.org/wiki/Hex_dump">hex dump</a> of the specified byte array.

Usage

From source file:org.traccar.protocol.AplicomProtocolDecoder.java

License:Apache License

private void decodeEB(Position position, ByteBuf buf) {

    if (buf.readByte() != (byte) 'E' || buf.readByte() != (byte) 'B') {
        return;/* ww  w  .ja v a 2 s .com*/
    }

    position.set(Position.KEY_VERSION_FW, buf.readUnsignedByte());
    position.set(Position.KEY_EVENT, buf.readUnsignedShort());
    position.set("dataValidity", buf.readUnsignedByte());
    position.set("towed", buf.readUnsignedByte());
    buf.readUnsignedShort(); // length

    while (buf.readableBytes() > 0) {
        buf.readUnsignedByte(); // towed position
        int type = buf.readUnsignedByte();
        int length = buf.readUnsignedByte();
        int end = buf.readerIndex() + length;

        switch (type) {
        case 0x01:
            position.set("brakeFlags", ByteBufUtil.hexDump(buf.readSlice(length)));
            break;
        case 0x02:
            position.set("wheelSpeed", buf.readUnsignedShort() / 256.0);
            position.set("wheelSpeedDifference", buf.readUnsignedShort() / 256.0 - 125.0);
            position.set("lateralAcceleration", buf.readUnsignedByte() / 10.0 - 12.5);
            position.set("vehicleSpeed", buf.readUnsignedShort() / 256.0);
            break;
        case 0x03:
            position.set(Position.KEY_AXLE_WEIGHT, buf.readUnsignedShort() * 2);
            break;
        case 0x04:
            position.set("tyrePressure", buf.readUnsignedByte() * 10);
            position.set("pneumaticPressure", buf.readUnsignedByte() * 5);
            break;
        case 0x05:
            position.set("brakeLining", buf.readUnsignedByte() * 0.4);
            position.set("brakeTemperature", buf.readUnsignedByte() * 10);
            break;
        case 0x06:
            position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 5L);
            position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedInt() * 5L);
            position.set(Position.KEY_ODOMETER_SERVICE, (buf.readUnsignedInt() - 2105540607) * 5L);
            break;
        case 0x0A:
            position.set("absStatusCounter", buf.readUnsignedShort());
            position.set("atvbStatusCounter", buf.readUnsignedShort());
            position.set("vdcActiveCounter", buf.readUnsignedShort());
            break;
        case 0x0B:
            position.set("brakeMinMaxData", ByteBufUtil.hexDump(buf.readSlice(length)));
            break;
        case 0x0C:
            position.set("missingPgn", ByteBufUtil.hexDump(buf.readSlice(length)));
            break;
        case 0x0D:
            buf.readUnsignedByte();
            position.set("towedDetectionStatus", buf.readUnsignedInt());
            buf.skipBytes(17); // vin
            break;
        case 0x0E:
        default:
            break;
        }

        buf.readerIndex(end);
    }
}

From source file:org.traccar.protocol.AutoFonProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;/*from  w  w w.  java  2s  .c o  m*/

    int type = buf.readUnsignedByte();

    if (type == MSG_LOGIN || type == MSG_45_LOGIN) {

        if (type == MSG_LOGIN) {
            buf.readUnsignedByte(); // hardware version
            buf.readUnsignedByte(); // software version
        }

        String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(1);
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);

        if (deviceSession != null && channel != null) {
            ByteBuf response = Unpooled.buffer();
            response.writeBytes("resp_crc=".getBytes(StandardCharsets.US_ASCII));
            response.writeByte(buf.getByte(buf.writerIndex() - 1));
            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
        }

        return null;

    }

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
    if (deviceSession == null) {
        return null;
    }

    if (type == MSG_LOCATION) {

        return decodePosition(deviceSession, buf, false);

    } else if (type == MSG_HISTORY) {

        int count = buf.readUnsignedByte() & 0x0f;
        buf.readUnsignedShort(); // total count
        List<Position> positions = new LinkedList<>();

        for (int i = 0; i < count; i++) {
            positions.add(decodePosition(deviceSession, buf, true));
        }

        return positions;

    } else if (type == MSG_45_LOCATION) {

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        short status = buf.readUnsignedByte();
        if (BitUtil.check(status, 7)) {
            position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
        }
        position.set(Position.KEY_BATTERY, BitUtil.to(status, 7));

        buf.skipBytes(2); // remaining time

        position.set(Position.PREFIX_TEMP + 1, buf.readByte());

        buf.skipBytes(2); // timer (interval and units)
        buf.readByte(); // mode
        buf.readByte(); // gprs sending interval

        buf.skipBytes(6); // mcc, mnc, lac, cid

        int valid = buf.readUnsignedByte();
        position.setValid(BitUtil.from(valid, 6) != 0);
        position.set(Position.KEY_SATELLITES, BitUtil.from(valid, 6));

        int time = buf.readUnsignedMedium();
        int date = buf.readUnsignedMedium();

        DateBuilder dateBuilder = new DateBuilder().setTime(time / 10000, time / 100 % 100, time % 100)
                .setDateReverse(date / 10000, date / 100 % 100, date % 100);
        position.setTime(dateBuilder.getDate());

        position.setLatitude(convertCoordinate(buf.readUnsignedByte(), buf.readUnsignedMedium()));
        position.setLongitude(convertCoordinate(buf.readUnsignedByte(), buf.readUnsignedMedium()));
        position.setSpeed(buf.readUnsignedByte());
        position.setCourse(buf.readUnsignedShort());

        return position;

    }

    return null;
}

From source file:org.traccar.protocol.AutoTrackProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;/*from   w  w w .  ja  v a 2  s . co  m*/

    buf.skipBytes(4); // sync
    int type = buf.readUnsignedByte();
    buf.readUnsignedShortLE(); // length

    switch (type) {
    case MSG_LOGIN_REQUEST:
        String imei = ByteBufUtil.hexDump(buf.readBytes(8));
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
        if (deviceSession == null) {
            return null;
        }
        int fuelConst = buf.readUnsignedShortLE();
        int tripConst = buf.readUnsignedShortLE();
        if (channel != null) {
            ByteBuf response = Unpooled.buffer();
            response.writeInt(0xF1F1F1F1); // sync
            response.writeByte(MSG_LOGIN_CONFIRM);
            response.writeShortLE(12); // length
            response.writeBytes(ByteBufUtil.decodeHexDump(imei));
            response.writeShortLE(fuelConst);
            response.writeShortLE(tripConst);
            response.writeShort(Checksum.crc16(Checksum.CRC16_XMODEM, response.nioBuffer()));
            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
        }
        return null;
    case MSG_TELEMETRY_1:
    case MSG_TELEMETRY_2:
    case MSG_TELEMETRY_3:
        deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession == null) {
            return null;
        }
        return decodeTelemetry(channel, remoteAddress, deviceSession, buf);
    default:
        return null;
    }
}

From source file:org.traccar.protocol.CalAmpProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;/*from   w  w w . j ava 2  s.c  o m*/

    if (BitUtil.check(buf.getByte(buf.readerIndex()), 7)) {

        int content = buf.readUnsignedByte();

        if (BitUtil.check(content, 0)) {
            String id = ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedByte()));
            getDeviceSession(channel, remoteAddress, id);
        }

        if (BitUtil.check(content, 1)) {
            buf.skipBytes(buf.readUnsignedByte()); // identifier type
        }

        if (BitUtil.check(content, 2)) {
            buf.skipBytes(buf.readUnsignedByte()); // authentication
        }

        if (BitUtil.check(content, 3)) {
            buf.skipBytes(buf.readUnsignedByte()); // routing
        }

        if (BitUtil.check(content, 4)) {
            buf.skipBytes(buf.readUnsignedByte()); // forwarding
        }

        if (BitUtil.check(content, 5)) {
            buf.skipBytes(buf.readUnsignedByte()); // response redirection
        }

    }

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
    if (deviceSession == null) {
        return null;
    }

    int service = buf.readUnsignedByte();
    int type = buf.readUnsignedByte();
    int index = buf.readUnsignedShort();

    if (service == SERVICE_ACKNOWLEDGED) {
        sendResponse(channel, remoteAddress, type, index, 0);
    }

    if (type == MSG_EVENT_REPORT || type == MSG_LOCATE_REPORT || type == MSG_MINI_EVENT_REPORT) {
        return decodePosition(deviceSession, type, buf);
    }

    return null;
}

From source file:org.traccar.protocol.CastelProtocolDecoder.java

License:Apache License

private Object decodeSc(Channel channel, SocketAddress remoteAddress, ByteBuf buf, int version, ByteBuf id,
        short type, DeviceSession deviceSession) {

    if (type == MSG_SC_HEARTBEAT) {

        sendResponse(channel, remoteAddress, version, id, MSG_SC_HEARTBEAT_RESPONSE, null);

    } else if (type == MSG_SC_LOGIN || type == MSG_SC_LOGOUT || type == MSG_SC_GPS || type == MSG_SC_ALARM
            || type == MSG_SC_CURRENT_LOCATION || type == MSG_SC_FUEL) {

        if (type == MSG_SC_LOGIN) {
            ByteBuf response = Unpooled.buffer(10);
            response.writeIntLE(0xFFFFFFFF);
            response.writeShortLE(0);/*from   w w  w . ja  v  a2s .c o m*/
            response.writeIntLE((int) (System.currentTimeMillis() / 1000));
            sendResponse(channel, remoteAddress, version, id, MSG_SC_LOGIN_RESPONSE, response);
        }

        if (type == MSG_SC_GPS) {
            buf.readUnsignedByte(); // historical
        } else if (type == MSG_SC_ALARM) {
            buf.readUnsignedIntLE(); // alarm
        } else if (type == MSG_SC_CURRENT_LOCATION) {
            buf.readUnsignedShortLE();
        }

        buf.readUnsignedIntLE(); // ACC ON time
        buf.readUnsignedIntLE(); // UTC time
        long odometer = buf.readUnsignedIntLE();
        long tripOdometer = buf.readUnsignedIntLE();
        long fuelConsumption = buf.readUnsignedIntLE();
        buf.readUnsignedShortLE(); // current fuel consumption
        long status = buf.readUnsignedIntLE();
        buf.skipBytes(8);

        int count = buf.readUnsignedByte();

        List<Position> positions = new LinkedList<>();

        for (int i = 0; i < count; i++) {
            Position position = readPosition(deviceSession, buf);
            position.set(Position.KEY_ODOMETER, odometer);
            position.set(Position.KEY_ODOMETER_TRIP, tripOdometer);
            position.set(Position.KEY_FUEL_CONSUMPTION, fuelConsumption);
            position.set(Position.KEY_STATUS, status);
            positions.add(position);
        }

        if (type == MSG_SC_ALARM) {
            int alarmCount = buf.readUnsignedByte();
            for (int i = 0; i < alarmCount; i++) {
                if (buf.readUnsignedByte() != 0) {
                    int alarm = buf.readUnsignedByte();
                    for (Position position : positions) {
                        decodeAlarm(position, alarm);
                    }
                    buf.readUnsignedShortLE(); // description
                    buf.readUnsignedShortLE(); // threshold
                }
            }
        } else if (type == MSG_SC_FUEL) {
            for (Position position : positions) {
                position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE());
            }
        }

        if (!positions.isEmpty()) {
            return positions;
        }

    } else if (type == MSG_SC_GPS_SLEEP) {

        buf.readUnsignedIntLE(); // device time

        return readPosition(deviceSession, buf);

    } else if (type == MSG_SC_AGPS_REQUEST) {

        return readPosition(deviceSession, buf);

    } else if (type == MSG_SC_PID_DATA) {

        Position position = createPosition(deviceSession);

        decodeStat(position, buf);

        buf.readUnsignedShortLE(); // sample rate
        decodeObd(position, buf, true);

        return position;

    } else if (type == MSG_SC_DTCS_PASSENGER) {

        Position position = createPosition(deviceSession);

        decodeStat(position, buf);

        buf.readUnsignedByte(); // flag
        position.add(ObdDecoder.decodeCodes(ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedByte()))));

        return position;

    } else if (type == MSG_SC_OBD_DATA) {

        Position position = createPosition(deviceSession);

        decodeStat(position, buf);

        buf.readUnsignedByte(); // flag
        decodeObd(position, buf, false);

        return position;

    } else if (type == MSG_SC_CELL) {

        Position position = createPosition(deviceSession);

        decodeStat(position, buf);

        position.setNetwork(
                new Network(CellTower.fromLacCid(buf.readUnsignedShortLE(), buf.readUnsignedShortLE())));

        return position;

    } else if (type == MSG_SC_QUERY_RESPONSE) {

        Position position = createPosition(deviceSession);

        buf.readUnsignedShortLE(); // index
        buf.readUnsignedByte(); // response count
        buf.readUnsignedByte(); // response index

        int failureCount = buf.readUnsignedByte();
        for (int i = 0; i < failureCount; i++) {
            buf.readUnsignedShortLE(); // tag
        }

        int successCount = buf.readUnsignedByte();
        for (int i = 0; i < successCount; i++) {
            buf.readUnsignedShortLE(); // tag
            position.set(Position.KEY_RESULT,
                    buf.readSlice(buf.readUnsignedShortLE()).toString(StandardCharsets.US_ASCII));
        }

        return position;

    }

    return null;
}

From source file:org.traccar.protocol.CityeasyProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;//  w  ww .j  a va  2  s.  c o  m

    buf.skipBytes(2); // header
    buf.readUnsignedShort(); // length

    String imei = ByteBufUtil.hexDump(buf.readSlice(7));
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei,
            imei + Checksum.luhn(Long.parseLong(imei)));
    if (deviceSession == null) {
        return null;
    }

    int type = buf.readUnsignedShort();

    if (type == MSG_LOCATION_REPORT || type == MSG_LOCATION_REQUEST) {

        String sentence = buf.toString(buf.readerIndex(), buf.readableBytes() - 8, StandardCharsets.US_ASCII);
        Parser parser = new Parser(PATTERN, sentence);
        if (!parser.matches()) {
            return null;
        }

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        if (parser.hasNext(15)) {

            position.setTime(parser.nextDateTime());

            position.setValid(parser.next().equals("A"));
            position.set(Position.KEY_SATELLITES, parser.nextInt());

            position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG));
            position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG));

            position.setSpeed(parser.nextDouble(0));
            position.set(Position.KEY_HDOP, parser.nextDouble(0));
            position.setAltitude(parser.nextDouble(0));

        } else {

            getLastLocation(position, null);

        }

        position.setNetwork(new Network(
                CellTower.from(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0), parser.nextInt(0))));

        return position;
    }

    return null;
}

From source file:org.traccar.protocol.EelinkProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;//w  w  w  . j a v a 2 s .c  om

    String uniqueId = null;
    DeviceSession deviceSession;

    if (buf.getByte(0) == 'E' && buf.getByte(1) == 'L') {
        buf.skipBytes(2 + 2 + 2); // udp header
        uniqueId = ByteBufUtil.hexDump(buf.readSlice(8)).substring(1);
        deviceSession = getDeviceSession(channel, remoteAddress, uniqueId);
    } else {
        deviceSession = getDeviceSession(channel, remoteAddress);
    }

    buf.skipBytes(2); // header
    int type = buf.readUnsignedByte();
    buf.readShort(); // length
    int index = buf.readUnsignedShort();

    if (type != MSG_GPS && type != MSG_DATA) {
        ByteBuf content = Unpooled.buffer();
        if (type == MSG_LOGIN) {
            content.writeInt((int) (System.currentTimeMillis() / 1000));
            content.writeByte(1); // protocol version
            content.writeByte(0); // action mask
        }
        ByteBuf response = EelinkProtocolEncoder.encodeContent(channel instanceof DatagramChannel, uniqueId,
                type, index, content);
        content.release();
        if (channel != null) {
            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
        }
    }

    if (type == MSG_LOGIN) {

        if (deviceSession == null) {
            getDeviceSession(channel, remoteAddress, ByteBufUtil.hexDump(buf.readSlice(8)).substring(1));
        }

    } else {

        if (deviceSession == null) {
            return null;
        }

        if (type == MSG_GPS || type == MSG_ALARM || type == MSG_STATE || type == MSG_SMS) {

            return decodeOld(deviceSession, buf, type, index);

        } else if (type >= MSG_NORMAL && type <= MSG_OBD_CODE) {

            return decodeNew(deviceSession, buf, type, index);

        } else if (type == MSG_HEARTBEAT && buf.readableBytes() >= 2) {

            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            getLastLocation(position, null);

            decodeStatus(position, buf.readUnsignedShort());

            return position;

        } else if (type == MSG_OBD) {

            return decodeObd(deviceSession, buf, index);

        } else if (type == MSG_DOWNLINK) {

            return decodeResult(deviceSession, buf, index);

        }

    }

    return null;
}

From source file:org.traccar.protocol.GalileoProtocolDecoder.java

License:Apache License

private void decodeTagOther(Position position, ByteBuf buf, int tag) {
    switch (tag) {
    case 0x01://www .jav a  2s. co m
        position.set(Position.KEY_VERSION_HW, buf.readUnsignedByte());
        break;
    case 0x02:
        position.set(Position.KEY_VERSION_FW, buf.readUnsignedByte());
        break;
    case 0x04:
        position.set("deviceId", buf.readUnsignedShortLE());
        break;
    case 0x10:
        position.set(Position.KEY_INDEX, buf.readUnsignedShortLE());
        break;
    case 0x20:
        position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
        break;
    case 0x33:
        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE() * 0.1));
        position.setCourse(buf.readUnsignedShortLE() * 0.1);
        break;
    case 0x34:
        position.setAltitude(buf.readShortLE());
        break;
    case 0x35:
        position.set(Position.KEY_HDOP, buf.readUnsignedByte() * 0.1);
        break;
    case 0x40:
        position.set(Position.KEY_STATUS, buf.readUnsignedShortLE());
        break;
    case 0x41:
        position.set(Position.KEY_POWER, buf.readUnsignedShortLE() / 1000.0);
        break;
    case 0x42:
        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() / 1000.0);
        break;
    case 0x43:
        position.set(Position.KEY_DEVICE_TEMP, buf.readByte());
        break;
    case 0x44:
        position.set(Position.KEY_ACCELERATION, buf.readUnsignedIntLE());
        break;
    case 0x45:
        position.set(Position.KEY_OUTPUT, buf.readUnsignedShortLE());
        break;
    case 0x46:
        position.set(Position.KEY_INPUT, buf.readUnsignedShortLE());
        break;
    case 0x48:
        position.set("statusExtended", buf.readUnsignedShortLE());
        break;
    case 0x58:
        position.set("rs2320", buf.readUnsignedShortLE());
        break;
    case 0x59:
        position.set("rs2321", buf.readUnsignedShortLE());
        break;
    case 0x90:
        position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(buf.readUnsignedIntLE()));
        break;
    case 0xc0:
        position.set("fuelTotal", buf.readUnsignedIntLE() * 0.5);
        break;
    case 0xc1:
        position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte() * 0.4);
        position.set(Position.PREFIX_TEMP + 1, buf.readUnsignedByte() - 40);
        position.set(Position.KEY_RPM, buf.readUnsignedShortLE() * 0.125);
        break;
    case 0xc2:
        position.set("canB0", buf.readUnsignedIntLE());
        break;
    case 0xc3:
        position.set("canB1", buf.readUnsignedIntLE());
        break;
    case 0xd4:
        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
        break;
    case 0xe0:
        position.set(Position.KEY_INDEX, buf.readUnsignedIntLE());
        break;
    case 0xe1:
        position.set(Position.KEY_RESULT,
                buf.readSlice(buf.readUnsignedByte()).toString(StandardCharsets.US_ASCII));
        break;
    case 0xea:
        position.set("userDataArray", ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedByte())));
        position.set("userDataArray", ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedByte())));
        break;
    default:
        buf.skipBytes(getTagLength(tag));
        break;
    }
}

From source file:org.traccar.protocol.Gt02ProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;//  www  .  j  a  v a  2 s  . c o  m

    buf.skipBytes(2); // header
    buf.readByte(); // size

    Position position = new Position(getProtocolName());

    // Zero for location messages
    int power = buf.readUnsignedByte();
    int gsm = buf.readUnsignedByte();

    String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(1);
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
    if (deviceSession == null) {
        return null;
    }
    position.setDeviceId(deviceSession.getDeviceId());

    position.set(Position.KEY_INDEX, buf.readUnsignedShort());

    int type = buf.readUnsignedByte();

    if (type == MSG_HEARTBEAT) {

        getLastLocation(position, null);

        position.set(Position.KEY_POWER, power);
        position.set(Position.KEY_RSSI, gsm);

        if (channel != null) {
            byte[] response = { 0x54, 0x68, 0x1A, 0x0D, 0x0A };
            channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(response), remoteAddress));
        }

    } else if (type == MSG_DATA) {

        DateBuilder dateBuilder = new DateBuilder()
                .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
                .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
        position.setTime(dateBuilder.getDate());

        double latitude = buf.readUnsignedInt() / (60.0 * 30000.0);
        double longitude = buf.readUnsignedInt() / (60.0 * 30000.0);

        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
        position.setCourse(buf.readUnsignedShort());

        buf.skipBytes(3); // reserved

        long flags = buf.readUnsignedInt();
        position.setValid(BitUtil.check(flags, 0));
        if (!BitUtil.check(flags, 1)) {
            latitude = -latitude;
        }
        if (!BitUtil.check(flags, 2)) {
            longitude = -longitude;
        }

        position.setLatitude(latitude);
        position.setLongitude(longitude);

    } else if (type == MSG_RESPONSE) {

        getLastLocation(position, null);

        position.set(Position.KEY_RESULT,
                buf.readSlice(buf.readUnsignedByte()).toString(StandardCharsets.US_ASCII));

    } else {

        return null;

    }

    return position;
}

From source file:org.traccar.protocol.Gt06ProtocolDecoder.java

License:Apache License

private Object decodeBasic(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {

    int length = buf.readUnsignedByte();
    int dataLength = length - 5;
    int type = buf.readUnsignedByte();

    DeviceSession deviceSession = null;//from  w  ww.j  av a  2s . c  om
    if (type != MSG_LOGIN) {
        deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession == null) {
            return null;
        }
        if (deviceSession.getTimeZone() == null) {
            deviceSession.setTimeZone(getTimeZone(deviceSession.getDeviceId()));
        }
    }

    if (type == MSG_LOGIN) {

        String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(1);
        buf.readUnsignedShort(); // type

        deviceSession = getDeviceSession(channel, remoteAddress, imei);
        if (deviceSession != null && deviceSession.getTimeZone() == null) {
            deviceSession.setTimeZone(getTimeZone(deviceSession.getDeviceId()));
        }

        if (dataLength > 10) {
            int extensionBits = buf.readUnsignedShort();
            int hours = (extensionBits >> 4) / 100;
            int minutes = (extensionBits >> 4) % 100;
            int offset = (hours * 60 + minutes) * 60;
            if ((extensionBits & 0x8) != 0) {
                offset = -offset;
            }
            if (deviceSession != null) {
                TimeZone timeZone = deviceSession.getTimeZone();
                if (timeZone.getRawOffset() == 0) {
                    timeZone.setRawOffset(offset * 1000);
                    deviceSession.setTimeZone(timeZone);
                }
            }

        }

        if (deviceSession != null) {
            sendResponse(channel, false, type, buf.getShort(buf.writerIndex() - 6), null);
        }

    } else if (type == MSG_HEARTBEAT) {

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        getLastLocation(position, null);

        int status = buf.readUnsignedByte();
        position.set(Position.KEY_ARMED, BitUtil.check(status, 0));
        position.set(Position.KEY_IGNITION, BitUtil.check(status, 1));
        position.set(Position.KEY_CHARGE, BitUtil.check(status, 2));

        if (buf.readableBytes() >= 2 + 6) {
            position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.01);
        }
        if (buf.readableBytes() >= 1 + 6) {
            position.set(Position.KEY_RSSI, buf.readUnsignedByte());
        }

        sendResponse(channel, false, type, buf.getShort(buf.writerIndex() - 6), null);

        return position;

    } else if (type == MSG_ADDRESS_REQUEST) {

        String response = "NA&&NA&&0##";
        ByteBuf content = Unpooled.buffer();
        content.writeByte(response.length());
        content.writeInt(0);
        content.writeBytes(response.getBytes(StandardCharsets.US_ASCII));
        sendResponse(channel, true, MSG_ADDRESS_RESPONSE, 0, content);

    } else if (type == MSG_TIME_REQUEST) {

        Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
        ByteBuf content = Unpooled.buffer();
        content.writeByte(calendar.get(Calendar.YEAR) - 2000);
        content.writeByte(calendar.get(Calendar.MONTH) + 1);
        content.writeByte(calendar.get(Calendar.DAY_OF_MONTH));
        content.writeByte(calendar.get(Calendar.HOUR_OF_DAY));
        content.writeByte(calendar.get(Calendar.MINUTE));
        content.writeByte(calendar.get(Calendar.SECOND));
        sendResponse(channel, false, MSG_TIME_REQUEST, 0, content);

    } else if (type == MSG_X1_GPS || type == MSG_X1_PHOTO_INFO) {

        return decodeX1(channel, buf, deviceSession, type);

    } else if (type == MSG_WIFI || type == MSG_WIFI_2) {

        return decodeWifi(channel, buf, deviceSession, type);

    } else if (type == MSG_INFO) {

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        getLastLocation(position, null);

        position.set(Position.KEY_POWER, buf.readShort() * 0.01);

        return position;

    } else {

        return decodeBasicOther(channel, buf, deviceSession, type, dataLength);

    }

    return null;
}