Example usage for io.netty.buffer ByteBuf toString

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

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Introduction

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

Prototype

public abstract String toString(Charset charset);

Source Link

Document

Decodes this buffer's readable bytes into a string with the specified character set name.

Usage

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;//  w w  w .java2  s. c  o m

    buf.readUnsignedShortLE(); // length
    int type = buf.readUnsignedShortLE();

    if (type == MSG_SHAKE_HAND && channel != null) {

        ByteBuf response = Unpooled.buffer(13);
        response.writeCharSequence("\r\n*KW", StandardCharsets.US_ASCII);
        response.writeByte(0);
        response.writeShortLE(response.capacity());
        response.writeShortLE(MSG_SHAKE_HAND_RESPONSE);
        response.writeByte(1); // status
        response.writeCharSequence("\r\n", StandardCharsets.US_ASCII);

        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));

    } else if (type == MSG_UPLOAD_POSITION || type == MSG_UPLOAD_POSITION_NEW || type == MSG_CONTROL_RESPONSE
            || type == MSG_ALARM) {

        boolean newFormat = false;
        if (type == MSG_UPLOAD_POSITION && buf.readableBytes() == 48
                || type == MSG_ALARM && buf.readableBytes() == 48
                || type == MSG_CONTROL_RESPONSE && buf.readableBytes() == 57) {
            newFormat = true;
        }

        Position position = new Position(getProtocolName());

        if (type == MSG_CONTROL_RESPONSE) {
            buf.readUnsignedIntLE(); // GIS ip
            buf.readUnsignedIntLE(); // GIS port
        }

        position.setValid(BitUtil.check(buf.readUnsignedByte(), 0));

        short alarm = buf.readUnsignedByte();
        switch (alarm) {
        case 1:
            position.set(Position.KEY_ALARM, Position.ALARM_SOS);
            break;
        case 2:
            position.set(Position.KEY_ALARM, Position.ALARM_OVERSPEED);
            break;
        case 3:
            position.set(Position.KEY_ALARM, Position.ALARM_GEOFENCE_EXIT);
            break;
        case 9:
            position.set(Position.KEY_ALARM, Position.ALARM_POWER_OFF);
            break;
        default:
            break;
        }

        if (newFormat) {
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedIntLE()));
            position.setCourse(buf.readFloatLE());
        } else {
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
            position.setCourse(buf.readUnsignedShortLE());
        }
        position.setLongitude(buf.readFloatLE());
        position.setLatitude(buf.readFloatLE());

        if (!newFormat) {
            long timeValue = buf.readUnsignedIntLE();
            DateBuilder dateBuilder = new DateBuilder().setYear((int) BitUtil.from(timeValue, 26))
                    .setMonth((int) BitUtil.between(timeValue, 22, 26))
                    .setDay((int) BitUtil.between(timeValue, 17, 22))
                    .setHour((int) BitUtil.between(timeValue, 12, 17))
                    .setMinute((int) BitUtil.between(timeValue, 6, 12))
                    .setSecond((int) BitUtil.to(timeValue, 6));
            position.setTime(dateBuilder.getDate());
        }

        ByteBuf rawId;
        if (newFormat) {
            rawId = buf.readSlice(12);
        } else {
            rawId = buf.readSlice(11);
        }
        String id = rawId.toString(StandardCharsets.US_ASCII).replaceAll("[^\\p{Print}]", "");
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
        if (deviceSession == null) {
            return null;
        }
        position.setDeviceId(deviceSession.getDeviceId());

        if (newFormat) {
            DateFormat dateFormat = new SimpleDateFormat("yy-MM-dd HH:mm:ss");
            position.setTime(dateFormat.parse(buf.readSlice(17).toString(StandardCharsets.US_ASCII)));
            buf.readByte();
        }

        if (!newFormat) {
            position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte());
            position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte());
        } else if (type == MSG_UPLOAD_POSITION_NEW) {
            position.set(Position.PREFIX_TEMP + 1, buf.readShortLE());
            position.set(Position.KEY_ODOMETER, buf.readFloatLE());
        }

        return position;
    }

    return null;
}

From source file:org.traccar.protocol.RuptelaProtocolDecoder.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  va2 s .  c om*/

    buf.readUnsignedShort(); // data length

    String imei = String.format("%015d", buf.readLong());
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
    if (deviceSession == null) {
        return null;
    }

    int type = buf.readUnsignedByte();

    if (type == MSG_RECORDS || type == MSG_EXTENDED_RECORDS) {

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

        buf.readUnsignedByte(); // records left
        int count = buf.readUnsignedByte();

        for (int i = 0; i < count; i++) {
            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            position.setTime(new Date(buf.readUnsignedInt() * 1000));
            buf.readUnsignedByte(); // timestamp extension

            if (type == MSG_EXTENDED_RECORDS) {
                buf.readUnsignedByte(); // record extension
            }

            buf.readUnsignedByte(); // priority (reserved)

            position.setValid(true);
            position.setLongitude(buf.readInt() / 10000000.0);
            position.setLatitude(buf.readInt() / 10000000.0);
            position.setAltitude(buf.readUnsignedShort() / 10.0);
            position.setCourse(buf.readUnsignedShort() / 100.0);

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

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

            position.set(Position.KEY_HDOP, buf.readUnsignedByte() / 10.0);

            if (type == MSG_EXTENDED_RECORDS) {
                position.set(Position.KEY_EVENT, buf.readUnsignedShort());
            } else {
                position.set(Position.KEY_EVENT, buf.readUnsignedByte());
            }

            // Read 1 byte data
            int cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte();
                decodeParameter(position, id, buf, 1);
            }

            // Read 2 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte();
                decodeParameter(position, id, buf, 2);
            }

            // Read 4 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte();
                decodeParameter(position, id, buf, 4);
            }

            // Read 8 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte();
                decodeParameter(position, id, buf, 8);
            }

            Long driverIdPart1 = (Long) position.getAttributes().remove(Position.PREFIX_IO + 126);
            Long driverIdPart2 = (Long) position.getAttributes().remove(Position.PREFIX_IO + 127);
            if (driverIdPart1 != null && driverIdPart2 != null) {
                ByteBuf driverId = Unpooled.copyLong(driverIdPart1, driverIdPart2);
                position.set(Position.KEY_DRIVER_UNIQUE_ID, driverId.toString(StandardCharsets.US_ASCII));
                driverId.release();
            }

            positions.add(position);
        }

        if (channel != null) {
            channel.writeAndFlush(new NetworkMessage(
                    Unpooled.wrappedBuffer(DataConverter.parseHex("0002640113bc")), remoteAddress));
        }

        return positions;

    } else if (type == MSG_DTCS) {

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

        int count = buf.readUnsignedByte();

        for (int i = 0; i < count; i++) {
            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            buf.readUnsignedByte(); // reserved

            position.setTime(new Date(buf.readUnsignedInt() * 1000));

            position.setValid(true);
            position.setLongitude(buf.readInt() / 10000000.0);
            position.setLatitude(buf.readInt() / 10000000.0);

            if (buf.readUnsignedByte() == 2) {
                position.set(Position.KEY_ARCHIVE, true);
            }

            position.set(Position.KEY_DTCS, buf.readSlice(5).toString(StandardCharsets.US_ASCII));

            positions.add(position);
        }

        if (channel != null) {
            channel.writeAndFlush(new NetworkMessage(
                    Unpooled.wrappedBuffer(DataConverter.parseHex("00026d01c4a4")), remoteAddress));
        }

        return positions;

    } else {

        return decodeCommandResponse(deviceSession, type, buf);

    }
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    buf.readUnsignedByte(); // header
    buf.readUnsignedShortLE(); // reserved
    buf.readUnsignedShortLE(); // length
    buf.readUnsignedByte(); // edition

    int type = buf.readUnsignedShortLE();

    buf.readUnsignedIntLE(); // command id

    sendResponse(channel, type);/*from  w  ww .  j a v  a  2s  .com*/

    if (type == MSG_LOGIN) {

        getDeviceSession(channel, remoteAddress, buf.toString(StandardCharsets.US_ASCII).trim());

    } else if (type == MSG_LOCATION) {

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

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

        getLastLocation(position, null);

        return position;

    }

    return null;
}

From source file:org.traccar.protocol.T800xProtocolDecoder.java

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    short header = buf.readShort();
    int type = buf.readUnsignedByte();
    buf.readUnsignedShort(); // length
    int index = buf.readUnsignedShort();
    ByteBuf imei = buf.readSlice(8);//from ww w. j  a va  2  s .co m

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress,
            ByteBufUtil.hexDump(imei).substring(1));
    if (deviceSession == null) {
        return null;
    }

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

        return decodePosition(channel, deviceSession, buf, header, type, index, imei);

    } else if (type == MSG_COMMAND) {

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

        getLastLocation(position, null);

        buf.readUnsignedByte(); // protocol number

        position.set(Position.KEY_RESULT, buf.toString(StandardCharsets.UTF_16LE));

        sendResponse(channel, header, type, index, imei, 0);

        return position;

    }

    sendResponse(channel, header, type, index, imei, 0);

    return null;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    buf.readUnsignedByte(); // product type
    buf.readUnsignedByte(); // hardware version
    buf.readUnsignedByte(); // firmware version
    buf.readUnsignedByte(); // contact reason
    buf.readUnsignedByte(); // alarm / status
    buf.readUnsignedByte(); // rssi
    buf.readUnsignedByte(); // battery / status

    String imei = ByteBufUtil.hexDump(buf.readBytes(8)).substring(1);
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
    if (deviceSession == null) {
        return null;
    }//from  w  ww  .  ja  v  a  2  s .  c o  m

    int type = BitUtil.to(buf.readUnsignedByte(), 6);
    buf.readUnsignedByte(); // length

    if (type == 4 || type == 8) {

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

        int count = buf.readUnsignedShort();
        buf.readUnsignedByte(); // hours / tickets
        buf.readUnsignedByte(); // error code
        buf.readUnsignedByte(); // reserved
        buf.readUnsignedByte(); // logger speed
        buf.readUnsignedByte(); // login time
        buf.readUnsignedByte(); // minutes

        for (int i = 0; i < count; i++) {
            position.set("rssi" + (i + 1), buf.readUnsignedByte());
            position.set("temp" + (i + 1), buf.readUnsignedByte() - 30);
            int data = buf.readUnsignedShort();
            position.set("src" + (i + 1), BitUtil.from(data, 10));
            position.set("ullage" + (i + 1), BitUtil.to(data, 10));
        }

        return position;

    } else if (type == 17) {

        String sentence = buf.toString(StandardCharsets.US_ASCII);

        Parser parser = new Parser(PATTERN, sentence);
        if (!parser.matches()) {
            return null;
        }

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

        DateBuilder dateBuilder = new DateBuilder().setTime(parser.nextInt(), parser.nextInt(),
                parser.nextInt());

        position.setLatitude(parser.nextCoordinate());
        position.setLongitude(parser.nextCoordinate());

        position.set(Position.KEY_HDOP, parser.nextDouble());

        position.setAltitude(parser.nextDouble());
        position.setValid(parser.nextInt() > 0);
        position.setCourse(parser.nextDouble());
        position.setSpeed(parser.nextDouble());

        dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
        position.setTime(dateBuilder.getDate());

        return position;

    }

    return null;
}

From source file:org.traccar.protocol.Tk102ProtocolDecoder.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.  c o  m*/

    buf.skipBytes(1); // header
    int type = buf.readUnsignedByte();
    ByteBuf dataSequence = buf.readSlice(10);
    int length = buf.readUnsignedByte();

    if (type == MSG_LOGIN_REQUEST || type == MSG_LOGIN_REQUEST_2) {

        ByteBuf data = buf.readSlice(length);

        String id;
        if (type == MSG_LOGIN_REQUEST) {
            id = data.toString(StandardCharsets.US_ASCII);
        } else {
            id = data.copy(1, 15).toString(StandardCharsets.US_ASCII);
        }

        if (getDeviceSession(channel, remoteAddress, id) != null) {
            ByteBuf response = Unpooled.buffer();
            response.writeByte(MODE_GPRS);
            response.writeBytes(data);
            sendResponse(channel, MSG_LOGIN_RESPONSE, dataSequence, response);
        }

    } else if (type == MSG_HEARTBEAT_REQUEST) {

        sendResponse(channel, MSG_HEARTBEAT_RESPONSE, dataSequence, buf.readRetainedSlice(length));

    } else {

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

        Parser parser = new Parser(PATTERN, buf.readSlice(length).toString(StandardCharsets.US_ASCII));
        if (!parser.matches()) {
            return null;
        }

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

        DateBuilder dateBuilder = new DateBuilder().setTime(parser.nextInt(0), parser.nextInt(0),
                parser.nextInt(0));

        position.setValid(parser.next().equals("A"));
        position.setLatitude(parser.nextCoordinate());
        position.setLongitude(parser.nextCoordinate());
        position.setSpeed(parser.nextDouble(0));

        dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
        position.setTime(dateBuilder.getDate());

        return position;

    }

    return null;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    int protocol = buf.readUnsignedByte();
    boolean legacy = protocol == 0x80;

    buf.readUnsignedByte(); // version id
    int index = legacy ? buf.readUnsignedShort() : buf.readUnsignedShortLE();
    int type = legacy ? buf.readUnsignedShort() : buf.readUnsignedShortLE();
    buf.readUnsignedShort(); // length
    buf.readUnsignedShort(); // mask
    buf.readUnsignedShort(); // checksum
    long id = legacy ? buf.readUnsignedInt() : buf.readUnsignedIntLE();
    buf.readUnsignedInt(); // time

    Position position = new Position(getProtocolName());
    position.set(Position.KEY_INDEX, index);
    position.setValid(true);//from   w w w. j  a  v a 2 s. c o m

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

    if (protocol == 0x01 && (type == MSG_COMPACT || type == MSG_FULL)) {

        // need to send ack?

        buf.readUnsignedShortLE(); // report trigger
        buf.readUnsignedShortLE(); // state flag

        position.setLatitude(buf.readUnsignedIntLE() * 0.0000001);
        position.setLongitude(buf.readUnsignedIntLE() * 0.0000001);

        position.set(Position.KEY_RSSI, buf.readUnsignedShortLE());
        position.set(Position.KEY_SATELLITES, buf.readUnsignedShortLE());
        position.set(Position.KEY_SATELLITES_VISIBLE, buf.readUnsignedShortLE());
        position.set("gpsAntennaStatus", buf.readUnsignedShortLE());

        position.setSpeed(buf.readUnsignedShortLE() * 0.194384);
        position.setCourse(buf.readUnsignedShortLE());

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

        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE());

        position.set(Position.KEY_CHARGE, buf.readUnsignedShortLE());

        position.setTime(new Date(buf.readUnsignedIntLE() * 1000));

        // parse other data

        return position;

    } else if (legacy) {

        if (channel != null) {
            channel.writeAndFlush(new NetworkMessage(
                    Unpooled.copiedBuffer("gprs,ack," + index, StandardCharsets.US_ASCII), remoteAddress));
        }

        String sentence = buf.toString(StandardCharsets.US_ASCII);

        Pattern pattern = Pattern.compile("(-?\\d+\\.\\d+), (-?\\d+\\.\\d+)");
        Matcher matcher = pattern.matcher(sentence);
        if (!matcher.find()) {
            return null;
        }
        position.setLatitude(Double.parseDouble(matcher.group(1)));
        position.setLongitude(Double.parseDouble(matcher.group(2)));

        pattern = Pattern.compile("([NSWE]{1,2}) with speed (\\d+) km/h");
        matcher = pattern.matcher(sentence);
        if (matcher.find()) {
            for (int i = 0; i < DIRECTIONS.length; i++) {
                if (matcher.group(1).equals(DIRECTIONS[i])) {
                    position.setCourse(i * 45.0);
                    break;
                }
            }
            position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(matcher.group(2))));
        }

        pattern = Pattern.compile("(\\d{1,2}:\\d{2}(:\\d{2})? \\w{3} \\d{1,2})");
        matcher = pattern.matcher(sentence);
        if (!matcher.find()) {
            return null;
        }
        DateFormat dateFormat = new SimpleDateFormat(
                matcher.group(2) != null ? "HH:mm:ss MMM d yyyy" : "HH:mm MMM d yyyy", Locale.ENGLISH);
        position.setTime(DateUtil.correctYear(
                dateFormat.parse(matcher.group(1) + " " + Calendar.getInstance().get(Calendar.YEAR))));

        if (sentence.contains("Ignition on detected")) {
            position.set(Position.KEY_IGNITION, true);
        } else if (sentence.contains("Ignition off detected")) {
            position.set(Position.KEY_IGNITION, false);
        }

        return position;

    }

    return null;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    if (buf.getUnsignedByte(buf.readerIndex()) == 0xF8) {

        if (channel != null) {
            ByteBuf response = Unpooled.buffer();
            response.writeByte(0xF8);/*from w ww .j  ava  2  s .  c o  m*/
            response.writeByte(DATA_GPS);
            response.writeByte(0xFE);
            response.writeShort(buf.getShort(response.writerIndex() - 1 - 2));
            response.writeShort(Checksum.crc16(Checksum.CRC16_XMODEM, response.nioBuffer(1, 4)));
            response.writeByte(0xF8);
            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
        }

        return decodeBinary(channel, remoteAddress, buf);
    } else {

        if (channel != null) {
            channel.writeAndFlush(
                    new NetworkMessage(Unpooled.copiedBuffer(
                            String.format("*TS01,ACK:%04X#",
                                    Checksum.crc16(Checksum.CRC16_XMODEM,
                                            buf.nioBuffer(1, buf.writerIndex() - 2))),
                            StandardCharsets.US_ASCII), remoteAddress));
        }

        return decodeText(channel, remoteAddress, buf.toString(StandardCharsets.US_ASCII));
    }
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;//from   www. jav  a2  s. co  m

    if (buf.getByte(buf.readerIndex()) != '*') {
        return null;
    }

    int headerIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '&');
    if (headerIndex < 0) {
        headerIndex = buf.writerIndex();
    }
    String header = buf.readSlice(headerIndex - buf.readerIndex()).toString(StandardCharsets.US_ASCII);

    Parser parser = new Parser(PATTERN_HEADER, header);
    if (!parser.matches()) {
        return null;
    }

    String head = parser.next();
    boolean reply = parser.next().equals("1");

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

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

    String type = parser.next();
    String subtype = parser.next();

    if (reply && channel != null) {
        channel.writeAndFlush(new NetworkMessage("*" + head + "Y" + type + subtype + "#", remoteAddress));
    }

    while (buf.isReadable()) {

        buf.readByte(); // skip delimiter

        byte dataType = buf.readByte();

        int delimiterIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '&');
        if (delimiterIndex < 0) {
            delimiterIndex = buf.writerIndex();
        }

        ByteBuf data = buf.readSlice(delimiterIndex - buf.readerIndex());

        switch (dataType) {
        case 'A':
            decodeLocation(position, data.toString(StandardCharsets.US_ASCII));
            break;
        case 'B':
            position.set(Position.KEY_STATUS, data.toString(StandardCharsets.US_ASCII));
            break;
        case 'C':
            long odometer = 0;
            while (data.isReadable()) {
                odometer <<= 4;
                odometer += data.readByte() - (byte) '0';
            }
            position.set(Position.KEY_ODOMETER, odometer * 2 * 1852 / 3600);
            break;
        case 'F':
            position.setSpeed(Integer.parseInt(data.readSlice(4).toString(StandardCharsets.US_ASCII)) * 0.1);
            break;
        case 'K':
            position.set("statusExtended", data.toString(StandardCharsets.US_ASCII));
            break;
        case 'P':
            if (data.readableBytes() >= 16) {
                position.setNetwork(new Network(
                        CellTower.from(Integer.parseInt(data.readSlice(4).toString(StandardCharsets.US_ASCII)),
                                Integer.parseInt(data.readSlice(4).toString(StandardCharsets.US_ASCII)),
                                Integer.parseInt(data.readSlice(4).toString(StandardCharsets.US_ASCII), 16),
                                Integer.parseInt(data.readSlice(4).toString(StandardCharsets.US_ASCII), 16))));
            }
            break;
        case 'Q':
            position.set("obdPid", ByteBufUtil.hexDump(data));
            break;
        case 'R':
            if (head.startsWith("HQ")) {
                position.set(Position.KEY_RSSI,
                        Integer.parseInt(data.readSlice(2).toString(StandardCharsets.US_ASCII)));
                position.set(Position.KEY_SATELLITES,
                        Integer.parseInt(data.readSlice(2).toString(StandardCharsets.US_ASCII)));
            } else {
                position.set("odbTravel", ByteBufUtil.hexDump(data));
            }
            break;
        case 'S':
            position.set("obdTraffic", ByteBufUtil.hexDump(data));
            break;
        case 'T':
            position.set(Position.KEY_BATTERY_LEVEL,
                    Integer.parseInt(data.readSlice(2).toString(StandardCharsets.US_ASCII)));
            break;
        case 'V':
            position.set(Position.KEY_POWER,
                    Integer.parseInt(data.readSlice(4).toString(StandardCharsets.US_ASCII)) * 0.1);
            break;
        default:
            break;
        }

    }

    if (position.getLatitude() != 0 && position.getLongitude() != 0) {
        return position;
    }

    return null;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    if (buf.getUnsignedByte(0) == 0xD0) {

        long deviceId = ((Long.reverseBytes(buf.getLong(0))) >> 32) & 0xFFFFFFFFL;
        getDeviceSession(channel, remoteAddress, String.valueOf(deviceId));

        return null;
    } else if (buf.toString(StandardCharsets.US_ASCII).startsWith("$OK:")
            || buf.toString(StandardCharsets.US_ASCII).startsWith("$ERR:")
            || buf.toString(StandardCharsets.US_ASCII).startsWith("$MSG:")) {

        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());
        getLastLocation(position, new Date());
        position.set(Position.KEY_RESULT, buf.toString(StandardCharsets.US_ASCII));

        return position;

    } else {/*from   w w w .j av a 2  s.  c  om*/

        Parser parser = new Parser(PATTERN, buf.toString(StandardCharsets.US_ASCII));
        if (!parser.matches()) {
            return null;
        }

        Position position = new Position(getProtocolName());

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

        position.setTime(parser.nextDateTime());

        position.setLongitude(parser.nextDouble(0));
        position.setLatitude(parser.nextDouble(0));
        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
        position.setCourse(parser.nextDouble(0));
        position.setAltitude(parser.nextDouble(0));

        int satellites = parser.nextInt(0);
        position.setValid(satellites != 0);
        position.set(Position.KEY_SATELLITES, satellites);

        position.set(Position.KEY_EVENT, parser.next());
        position.set(Position.KEY_BATTERY, parser.nextDouble());
        if (parser.hasNext()) {
            position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000);
        }
        position.set(Position.KEY_INPUT, parser.next());
        position.set(Position.PREFIX_ADC + 1, parser.next());
        position.set(Position.PREFIX_ADC + 2, parser.next());
        position.set(Position.KEY_OUTPUT, parser.next());

        return position;

    }

}