Example usage for io.netty.buffer ByteBuf readUnsignedInt

List of usage examples for io.netty.buffer ByteBuf readUnsignedInt

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Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf readUnsignedInt.

Prototype

public abstract long readUnsignedInt();

Source Link

Document

Gets an unsigned 32-bit integer at the current readerIndex and increases the readerIndex by 4 in this buffer.

Usage

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

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

    String id = decodeId(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte(),
            buf.readUnsignedByte());//from   w  w  w.j  a  va2s .  c  o m

    sendResponse(channel, remoteAddress, buf.getByte(buf.writerIndex() - 2));

    if (type == MSG_POSITION_DATA || type == MSG_ROLLCALL_RESPONSE || type == MSG_ALARM_DATA
            || type == MSG_BLIND_AREA) {

        Position position = new Position(getProtocolName());

        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, "1" + id, id);
        if (deviceSession == null) {
            return null;
        }
        position.setDeviceId(deviceSession.getDeviceId());

        DateBuilder dateBuilder = new DateBuilder().setYear(BcdUtil.readInteger(buf, 2))
                .setMonth(BcdUtil.readInteger(buf, 2)).setDay(BcdUtil.readInteger(buf, 2))
                .setHour(BcdUtil.readInteger(buf, 2)).setMinute(BcdUtil.readInteger(buf, 2))
                .setSecond(BcdUtil.readInteger(buf, 2));
        position.setTime(dateBuilder.getDate());

        position.setLatitude(BcdUtil.readCoordinate(buf));
        position.setLongitude(BcdUtil.readCoordinate(buf));
        position.setSpeed(UnitsConverter.knotsFromKph(BcdUtil.readInteger(buf, 4)));
        position.setCourse(BcdUtil.readInteger(buf, 4));

        int flags = buf.readUnsignedByte();
        position.setValid((flags & 0x80) != 0);
        position.set(Position.KEY_SATELLITES, flags & 0x0f);

        position.set(Position.KEY_STATUS, buf.readUnsignedByte());
        position.set("key", buf.readUnsignedByte());
        position.set("oil", buf.readUnsignedShort() / 10.0);
        position.set(Position.KEY_POWER, buf.readUnsignedByte() + buf.readUnsignedByte() * 0.01);
        position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());

        return position;
    }

    return null;
}

From source file:org.traccar.protocol.Gl200BinaryProtocolDecoder.java

License:Apache License

private List<Position> decodeLocation(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {

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

    int type = buf.readUnsignedByte();

    buf.readUnsignedInt(); // mask
    buf.readUnsignedShort(); // length
    buf.readUnsignedByte(); // device type
    buf.readUnsignedShort(); // protocol version
    buf.readUnsignedShort(); // firmware version

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress,
            String.format("%015d", buf.readLong()));
    if (deviceSession == null) {
        return null;
    }//from   www  . j  a  v a 2  s  .  com

    int battery = buf.readUnsignedByte();
    int power = buf.readUnsignedShort();

    if (type == MSG_RSP_GEO) {
        buf.readUnsignedByte(); // reserved
        buf.readUnsignedByte(); // reserved
    }

    buf.readUnsignedByte(); // motion status
    int satellites = buf.readUnsignedByte();

    if (type != MSG_RSP_COMPRESSED) {
        buf.readUnsignedByte(); // index
    }

    if (type == MSG_RSP_LCB) {
        buf.readUnsignedByte(); // phone length
        for (int b = buf.readUnsignedByte();; b = buf.readUnsignedByte()) {
            if ((b & 0xf) == 0xf || (b & 0xf0) == 0xf0) {
                break;
            }
        }
    }

    if (type == MSG_RSP_COMPRESSED) {

        int count = buf.readUnsignedShort();

        BitBuffer bits;
        int speed = 0;
        int heading = 0;
        int latitude = 0;
        int longitude = 0;
        long time = 0;

        for (int i = 0; i < count; i++) {

            if (time > 0) {
                time += 1;
            }

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

            switch (BitUtil.from(buf.getUnsignedByte(buf.readerIndex()), 8 - 2)) {
            case 1:
                bits = new BitBuffer(buf.readSlice(3));
                bits.readUnsigned(2); // point attribute
                bits.readUnsigned(1); // fix type
                speed = bits.readUnsigned(12);
                heading = bits.readUnsigned(9);
                longitude = buf.readInt();
                latitude = buf.readInt();
                if (time == 0) {
                    time = buf.readUnsignedInt();
                }
                break;
            case 2:
                bits = new BitBuffer(buf.readSlice(5));
                bits.readUnsigned(2); // point attribute
                bits.readUnsigned(1); // fix type
                speed += bits.readSigned(7);
                heading += bits.readSigned(7);
                longitude += bits.readSigned(12);
                latitude += bits.readSigned(11);
                break;
            default:
                buf.readUnsignedByte(); // invalid or same
                continue;
            }

            position.setValid(true);
            position.setTime(new Date(time * 1000));
            position.setSpeed(UnitsConverter.knotsFromKph(speed * 0.1));
            position.setCourse(heading);
            position.setLongitude(longitude * 0.000001);
            position.setLatitude(latitude * 0.000001);

            positions.add(position);

        }

    } else {

        int count = buf.readUnsignedByte();

        for (int i = 0; i < count; i++) {

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

            position.set(Position.KEY_BATTERY_LEVEL, battery);
            position.set(Position.KEY_POWER, power);
            position.set(Position.KEY_SATELLITES, satellites);

            int hdop = buf.readUnsignedByte();
            position.setValid(hdop > 0);
            position.set(Position.KEY_HDOP, hdop);

            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedMedium() * 0.1));
            position.setCourse(buf.readUnsignedShort());
            position.setAltitude(buf.readShort());
            position.setLongitude(buf.readInt() * 0.000001);
            position.setLatitude(buf.readInt() * 0.000001);

            position.setTime(decodeTime(buf));

            position.setNetwork(new Network(CellTower.from(buf.readUnsignedShort(), buf.readUnsignedShort(),
                    buf.readUnsignedShort(), buf.readUnsignedShort())));

            buf.readUnsignedByte(); // reserved

            positions.add(position);

        }

    }

    return positions;
}

From source file:org.traccar.protocol.Gl200BinaryProtocolDecoder.java

License:Apache License

private Position decodeEvent(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {

    Position position = new Position(getProtocolName());

    int type = buf.readUnsignedByte();

    buf.readUnsignedInt(); // mask
    buf.readUnsignedShort(); // length
    buf.readUnsignedByte(); // device type
    buf.readUnsignedShort(); // protocol version

    position.set(Position.KEY_VERSION_FW, String.valueOf(buf.readUnsignedShort()));

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress,
            String.format("%015d", buf.readLong()));
    if (deviceSession == null) {
        return null;
    }//  w  w w  .j  a  v a  2  s .  com
    position.setDeviceId(deviceSession.getDeviceId());

    position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte());
    position.set(Position.KEY_POWER, buf.readUnsignedShort());

    buf.readUnsignedByte(); // motion status

    position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());

    switch (type) {
    case MSG_EVT_BPL:
        buf.readUnsignedShort(); // backup battery voltage
        break;
    case MSG_EVT_VGN:
    case MSG_EVT_VGF:
        buf.readUnsignedShort(); // reserved
        buf.readUnsignedByte(); // report type
        buf.readUnsignedInt(); // ignition duration
        break;
    case MSG_EVT_UPD:
        buf.readUnsignedShort(); // code
        buf.readUnsignedByte(); // retry
        break;
    case MSG_EVT_IDF:
        buf.readUnsignedInt(); // idling duration
        break;
    case MSG_EVT_GSS:
        buf.readUnsignedByte(); // gps signal status
        buf.readUnsignedInt(); // reserved
        break;
    case MSG_EVT_GES:
        buf.readUnsignedShort(); // trigger geo id
        buf.readUnsignedByte(); // trigger geo enable
        buf.readUnsignedByte(); // trigger mode
        buf.readUnsignedInt(); // radius
        buf.readUnsignedInt(); // check interval
        break;
    case MSG_EVT_GPJ:
        buf.readUnsignedByte(); // cw jamming value
        buf.readUnsignedByte(); // gps jamming state
        break;
    case MSG_EVT_RMD:
        buf.readUnsignedByte(); // roaming state
        break;
    case MSG_EVT_JDS:
        buf.readUnsignedByte(); // jamming state
        break;
    case MSG_EVT_CRA:
        buf.readUnsignedByte(); // crash counter
        break;
    case MSG_EVT_UPC:
        buf.readUnsignedByte(); // command id
        buf.readUnsignedShort(); // result
        break;
    default:
        break;
    }

    buf.readUnsignedByte(); // count

    int hdop = buf.readUnsignedByte();
    position.setValid(hdop > 0);
    position.set(Position.KEY_HDOP, hdop);

    position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedMedium() * 0.1));
    position.setCourse(buf.readUnsignedShort());
    position.setAltitude(buf.readShort());
    position.setLongitude(buf.readInt() * 0.000001);
    position.setLatitude(buf.readInt() * 0.000001);

    position.setTime(decodeTime(buf));

    position.setNetwork(new Network(CellTower.from(buf.readUnsignedShort(), buf.readUnsignedShort(),
            buf.readUnsignedShort(), buf.readUnsignedShort())));

    buf.readUnsignedByte(); // reserved

    return position;
}

From source file:org.traccar.protocol.Gl200BinaryProtocolDecoder.java

License:Apache License

private Position decodeInformation(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {

    Position position = new Position(getProtocolName());

    int type = buf.readUnsignedByte();

    buf.readUnsignedInt(); // mask
    buf.readUnsignedShort(); // length

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress,
            String.format("%015d", buf.readLong()));
    if (deviceSession == null) {
        return null;
    }//from   w  w  w.  ja  va2  s  .c  om
    position.setDeviceId(deviceSession.getDeviceId());

    buf.readUnsignedByte(); // device type
    buf.readUnsignedShort(); // protocol version

    position.set(Position.KEY_VERSION_FW, String.valueOf(buf.readUnsignedShort()));

    if (type == MSG_INF_VER) {
        buf.readUnsignedShort(); // hardware version
        buf.readUnsignedShort(); // mcu version
        buf.readUnsignedShort(); // reserved
    }

    buf.readUnsignedByte(); // motion status
    buf.readUnsignedByte(); // reserved

    position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());

    buf.readUnsignedByte(); // mode
    buf.skipBytes(7); // last fix time
    buf.readUnsignedByte(); // reserved
    buf.readUnsignedByte();
    buf.readUnsignedShort(); // response report mask
    buf.readUnsignedShort(); // ign interval
    buf.readUnsignedShort(); // igf interval
    buf.readUnsignedInt(); // reserved
    buf.readUnsignedByte(); // reserved

    if (type == MSG_INF_BAT) {
        position.set(Position.KEY_CHARGE, buf.readUnsignedByte() != 0);
        position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001);
        position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001);
        position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte());
    }

    buf.skipBytes(10); // iccid

    if (type == MSG_INF_CSQ) {
        position.set(Position.KEY_RSSI, buf.readUnsignedByte());
        buf.readUnsignedByte();
    }

    buf.readUnsignedByte(); // time zone flags
    buf.readUnsignedShort(); // time zone offset

    if (type == MSG_INF_GIR) {
        buf.readUnsignedByte(); // gir trigger
        buf.readUnsignedByte(); // cell number
        position.setNetwork(new Network(CellTower.from(buf.readUnsignedShort(), buf.readUnsignedShort(),
                buf.readUnsignedShort(), buf.readUnsignedShort())));
        buf.readUnsignedByte(); // ta
        buf.readUnsignedByte(); // rx level
    }

    getLastLocation(position, decodeTime(buf));

    return position;
}

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;

    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;
    }//w w  w . ja v  a  2  s  .c o  m
    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 boolean decodeGps(Position position, ByteBuf buf, boolean hasLength, TimeZone timezone) {

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

    if (hasLength && buf.readUnsignedByte() == 0) {
        return false;
    }/*from w w  w  . j  a v  a2  s .  c  o m*/

    position.set(Position.KEY_SATELLITES, BitUtil.to(buf.readUnsignedByte(), 4));

    double latitude = buf.readUnsignedInt() / 60.0 / 30000.0;
    double longitude = buf.readUnsignedInt() / 60.0 / 30000.0;
    position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));

    int flags = buf.readUnsignedShort();
    position.setCourse(BitUtil.to(flags, 10));
    position.setValid(BitUtil.check(flags, 12));

    if (!BitUtil.check(flags, 10)) {
        latitude = -latitude;
    }
    if (BitUtil.check(flags, 11)) {
        longitude = -longitude;
    }

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

    if (BitUtil.check(flags, 14)) {
        position.set(Position.KEY_IGNITION, BitUtil.check(flags, 15));
    }

    return true;
}

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

License:Apache License

private Object decodeX1(Channel channel, ByteBuf buf, DeviceSession deviceSession, int type) {

    if (type == MSG_X1_GPS) {

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

        buf.readUnsignedInt(); // data and alarm

        decodeGps(position, buf, false, deviceSession.getTimeZone());

        buf.readUnsignedShort(); // terminal info

        position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());

        position.setNetwork(new Network(CellTower.from(buf.readUnsignedShort(), buf.readUnsignedByte(),
                buf.readUnsignedShort(), buf.readUnsignedInt())));

        long driverId = buf.readUnsignedInt();
        if (driverId > 0) {
            position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(driverId));
        }//from  ww w . j av  a 2s  .  c  o  m

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

        return position;

    } else if (type == MSG_X1_PHOTO_INFO) {

        buf.skipBytes(6); // time
        buf.readUnsignedByte(); // fix status
        buf.readUnsignedInt(); // latitude
        buf.readUnsignedInt(); // longitude
        buf.readUnsignedByte(); // camera id
        buf.readUnsignedByte(); // photo source
        buf.readUnsignedByte(); // picture format

        ByteBuf photo = Unpooled.buffer(buf.readInt());
        int pictureId = buf.readInt();
        photos.put(pictureId, photo);
        sendPhotoRequest(channel, pictureId);

    }

    return null;
}

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

License:Apache License

private Object decodeBasicOther(Channel channel, ByteBuf buf, DeviceSession deviceSession, int type,
        int dataLength) {

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

    if (type == MSG_LBS_MULTIPLE || type == MSG_LBS_EXTEND || type == MSG_LBS_WIFI || type == MSG_LBS_2
            || type == MSG_WIFI_3) {/*from ww  w  . j av  a 2 s .c  o m*/

        boolean longFormat = type == MSG_LBS_2 || type == MSG_WIFI_3;

        DateBuilder dateBuilder = new DateBuilder(deviceSession.getTimeZone())
                .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
                .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());

        getLastLocation(position, dateBuilder.getDate());

        int mcc = buf.readUnsignedShort();
        int mnc = BitUtil.check(mcc, 15) ? buf.readUnsignedShort() : buf.readUnsignedByte();
        Network network = new Network();
        for (int i = 0; i < 7; i++) {
            int lac = longFormat ? buf.readInt() : buf.readUnsignedShort();
            int cid = longFormat ? (int) buf.readLong() : buf.readUnsignedMedium();
            int rssi = -buf.readUnsignedByte();
            if (lac > 0) {
                network.addCellTower(CellTower.from(BitUtil.to(mcc, 15), mnc, lac, cid, rssi));
            }
        }

        buf.readUnsignedByte(); // time leads

        if (type != MSG_LBS_MULTIPLE && type != MSG_LBS_2) {
            int wifiCount = buf.readUnsignedByte();
            for (int i = 0; i < wifiCount; i++) {
                String mac = ByteBufUtil.hexDump(buf.readSlice(6)).replaceAll("(..)", "$1:");
                network.addWifiAccessPoint(
                        WifiAccessPoint.from(mac.substring(0, mac.length() - 1), buf.readUnsignedByte()));
            }
        }

        position.setNetwork(network);

    } else if (type == MSG_STRING) {

        getLastLocation(position, null);

        int commandLength = buf.readUnsignedByte();

        if (commandLength > 0) {
            buf.readUnsignedByte(); // server flag (reserved)
            position.set(Position.KEY_RESULT,
                    buf.readSlice(commandLength - 1).toString(StandardCharsets.US_ASCII));
        }

    } else if (isSupported(type)) {

        if (hasGps(type)) {
            decodeGps(position, buf, false, deviceSession.getTimeZone());
        } else {
            getLastLocation(position, null);
        }

        if (hasLbs(type)) {
            decodeLbs(position, buf, hasStatus(type));
        }

        if (hasStatus(type)) {
            decodeStatus(position, buf);
        }

        if (type == MSG_GPS_LBS_1 && buf.readableBytes() == 2 + 6) {
            int mask = buf.readUnsignedShort();
            position.set(Position.KEY_IGNITION, BitUtil.check(mask, 8 + 7));
            position.set(Position.PREFIX_IN + 2, BitUtil.check(mask, 8 + 6));
            if (BitUtil.check(mask, 8 + 4)) {
                int value = BitUtil.to(mask, 8 + 1);
                if (BitUtil.check(mask, 8 + 1)) {
                    value = -value;
                }
                position.set(Position.PREFIX_TEMP + 1, value);
            } else {
                int value = BitUtil.to(mask, 8 + 2);
                if (BitUtil.check(mask, 8 + 5)) {
                    position.set(Position.PREFIX_ADC + 1, value);
                } else {
                    position.set(Position.PREFIX_ADC + 1, value * 0.1);
                }
            }
        }

        if (type == MSG_GPS_LBS_1 && buf.readableBytes() == 4 + 6) {
            position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
        }

        if (type == MSG_GPS_LBS_2 && buf.readableBytes() == 3 + 6) {
            position.set(Position.KEY_IGNITION, buf.readUnsignedByte() > 0);
            position.set(Position.KEY_EVENT, buf.readUnsignedByte()); // reason
            position.set(Position.KEY_ARCHIVE, buf.readUnsignedByte() > 0);
        }

    } else {

        if (dataLength > 0) {
            buf.skipBytes(dataLength);
        }
        if (type != MSG_COMMAND_0 && type != MSG_COMMAND_1 && type != MSG_COMMAND_2) {
            sendResponse(channel, false, type, buf.getShort(buf.writerIndex() - 6), null);
        }
        return null;

    }

    if (hasLanguage(type)) {
        buf.readUnsignedShort();
    }

    if (type == MSG_GPS_LBS_STATUS_3 || type == MSG_FENCE_MULTI) {
        position.set(Position.KEY_GEOFENCE, buf.readUnsignedByte());
    }

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

    return position;
}

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

License:Apache License

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

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
    if (deviceSession == null) {
        return null;
    }/*  w  w w .j a v  a 2s. com*/

    if (deviceSession.getTimeZone() == null) {
        deviceSession.setTimeZone(getTimeZone(deviceSession.getDeviceId()));
    }

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

    buf.readUnsignedShort(); // length
    int type = buf.readUnsignedByte();

    if (type == MSG_STRING_INFO) {

        buf.readUnsignedInt(); // server flag
        String data;
        if (buf.readUnsignedByte() == 1) {
            data = buf.readSlice(buf.readableBytes() - 6).toString(StandardCharsets.US_ASCII);
        } else {
            data = buf.readSlice(buf.readableBytes() - 6).toString(StandardCharsets.UTF_16BE);
        }

        if (decodeLocationString(position, data) == null) {
            getLastLocation(position, null);
            position.set(Position.KEY_RESULT, data);
        }

        return position;

    } else if (type == MSG_INFO) {

        int subType = buf.readUnsignedByte();

        getLastLocation(position, null);

        if (subType == 0x00) {
            position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.01);
            return position;
        } else if (subType == 0x05) {
            int flags = buf.readUnsignedByte();
            position.set(Position.KEY_DOOR, BitUtil.check(flags, 0));
            position.set(Position.PREFIX_IO + 1, BitUtil.check(flags, 2));
            return position;
        } else if (subType == 0x0a) {
            buf.skipBytes(8); // imei
            buf.skipBytes(8); // imsi
            position.set("iccid", ByteBufUtil.hexDump(buf.readSlice(8)));
            return position;
        } else if (subType == 0x0d) {
            if (buf.getByte(buf.readerIndex()) != '!') {
                buf.skipBytes(6);
            }
            return decodeFuelData(position,
                    buf.toString(buf.readerIndex(), buf.readableBytes() - 4 - 2, StandardCharsets.US_ASCII));
        }

    } else if (type == MSG_X1_PHOTO_DATA) {

        int pictureId = buf.readInt();

        ByteBuf photo = photos.get(pictureId);

        buf.readUnsignedInt(); // offset
        buf.readBytes(photo, buf.readUnsignedShort());

        if (photo.writableBytes() > 0) {
            sendPhotoRequest(channel, pictureId);
        } else {
            Device device = Context.getDeviceManager().getById(deviceSession.getDeviceId());
            position.set(Position.KEY_IMAGE,
                    Context.getMediaManager().writeFile(device.getUniqueId(), photo, "jpg"));
            photos.remove(pictureId).release();
        }

    } else if (type == MSG_AZ735_GPS || type == MSG_AZ735_ALARM) {

        if (!decodeGps(position, buf, true, deviceSession.getTimeZone())) {
            getLastLocation(position, position.getDeviceTime());
        }

        if (decodeLbs(position, buf, true)) {
            position.set(Position.KEY_RSSI, buf.readUnsignedByte());
        }

        buf.skipBytes(buf.readUnsignedByte()); // additional cell towers
        buf.skipBytes(buf.readUnsignedByte()); // wifi access point

        int status = buf.readUnsignedByte();
        position.set(Position.KEY_STATUS, status);

        if (type == MSG_AZ735_ALARM) {
            switch (status) {
            case 0xA0:
                position.set(Position.KEY_ARMED, true);
                break;
            case 0xA1:
                position.set(Position.KEY_ARMED, false);
                break;
            case 0xA2:
            case 0xA3:
                position.set(Position.KEY_ALARM, Position.ALARM_LOW_BATTERY);
                break;
            case 0xA4:
                position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
                break;
            case 0xA5:
                position.set(Position.KEY_ALARM, Position.ALARM_DOOR);
                break;
            default:
                break;
            }
        }

        buf.skipBytes(buf.readUnsignedByte()); // reserved extension

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

        return position;

    } else if (type == MSG_OBD) {

        DateBuilder dateBuilder = new DateBuilder(deviceSession.getTimeZone())
                .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
                .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());

        getLastLocation(position, dateBuilder.getDate());

        position.set(Position.KEY_IGNITION, buf.readUnsignedByte() > 0);

        String data = buf.readCharSequence(buf.readableBytes() - 18, StandardCharsets.US_ASCII).toString();
        for (String pair : data.split(",")) {
            String[] values = pair.split("=");
            switch (Integer.parseInt(values[0].substring(0, 2), 16)) {
            case 40:
                position.set(Position.KEY_ODOMETER, Integer.parseInt(values[1], 16) * 0.01);
                break;
            case 43:
                position.set(Position.KEY_FUEL_LEVEL, Integer.parseInt(values[1], 16) * 0.01);
                break;
            case 45:
                position.set(Position.KEY_COOLANT_TEMP, Integer.parseInt(values[1], 16) * 0.01);
                break;
            case 53:
                position.set(Position.KEY_OBD_SPEED, Integer.parseInt(values[1], 16) * 0.01);
                break;
            case 54:
                position.set(Position.KEY_RPM, Integer.parseInt(values[1], 16) * 0.01);
                break;
            case 71:
                position.set(Position.KEY_FUEL_USED, Integer.parseInt(values[1], 16) * 0.01);
                break;
            case 73:
                position.set(Position.KEY_HOURS, Integer.parseInt(values[1], 16) * 0.01);
                break;
            case 74:
                position.set(Position.KEY_VIN, values[1]);
                break;
            default:
                break;
            }
        }

        return position;

    }

    return null;
}

From source file:org.traccar.protocol.H02ProtocolDecoder.java

License:Apache License

private Position decodeBinary(ByteBuf buf, Channel channel, SocketAddress remoteAddress) {

    Position position = new Position(getProtocolName());

    boolean longId = buf.readableBytes() == 42;

    buf.readByte(); // marker

    String id;//from w w  w .ja  v  a 2 s .co m
    if (longId) {
        id = ByteBufUtil.hexDump(buf.readSlice(8)).substring(0, 15);
    } else {
        id = ByteBufUtil.hexDump(buf.readSlice(5));
    }

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
    if (deviceSession == null) {
        return null;
    }
    position.setDeviceId(deviceSession.getDeviceId());

    DateBuilder dateBuilder = new DateBuilder().setHour(BcdUtil.readInteger(buf, 2))
            .setMinute(BcdUtil.readInteger(buf, 2)).setSecond(BcdUtil.readInteger(buf, 2))
            .setDay(BcdUtil.readInteger(buf, 2)).setMonth(BcdUtil.readInteger(buf, 2))
            .setYear(BcdUtil.readInteger(buf, 2));
    position.setTime(dateBuilder.getDate());

    double latitude = readCoordinate(buf, false);
    position.set(Position.KEY_BATTERY_LEVEL, decodeBattery(buf.readUnsignedByte()));
    double longitude = readCoordinate(buf, true);

    int flags = buf.readUnsignedByte() & 0x0f;
    position.setValid((flags & 0x02) != 0);
    if ((flags & 0x04) == 0) {
        latitude = -latitude;
    }
    if ((flags & 0x08) == 0) {
        longitude = -longitude;
    }

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

    position.setSpeed(BcdUtil.readInteger(buf, 3));
    position.setCourse((buf.readUnsignedByte() & 0x0f) * 100.0 + BcdUtil.readInteger(buf, 2));

    processStatus(position, buf.readUnsignedInt());

    return position;
}