Example usage for io.netty.buffer ByteBuf readIntLE

Introduction

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

Prototype

public abstract int readIntLE();

Source Link

Document

Gets a 32-bit integer at the current readerIndex in the Little Endian Byte Order and increases the readerIndex by 4 in this buffer.

Usage

From source file:nearenough.protocol.RtWireTest.java

License:Open Source License

@Test
public void encodeTwoTagMessage() {
    byte[] indxValue = new byte[24];
    byte[] maxtValue = new byte[32];
    Arrays.fill(indxValue, (byte) '1');
    Arrays.fill(maxtValue, (byte) '2');

    RtMessage msg = RtMessage.builder().add(RtTag.INDX, indxValue).add(RtTag.MAXT, maxtValue).build();

    // Wire encoding
    //   4 num_tags
    //   8 (MAXT, INDX) tags
    //   4 INDX offset
    //  24 MAXT value
    //  32 INDX value
    ByteBuf onWire = RtWire.toWire(msg);
    assertThat(onWire.readableBytes(), equalTo(4 + 8 + 4 + 24 + 32));

    // num_tags/*  w ww .j  a  v a  2  s . c om*/
    assertThat(onWire.readIntLE(), equalTo(2));

    // Offset past MAXT value to start of INDX value
    assertThat(onWire.readIntLE(), equalTo(maxtValue.length));

    // MAXT tag
    assertThat(onWire.readInt(), equalTo(RtTag.MAXT.wireEncoding()));
    // INDX tag
    assertThat(onWire.readInt(), equalTo(RtTag.INDX.wireEncoding()));

    // MAXT value
    byte[] readTag1Value = new byte[maxtValue.length];
    onWire.readBytes(readTag1Value);
    assertArrayEquals(maxtValue, readTag1Value);

    // INDX value
    byte[] readTag2Value = new byte[indxValue.length];
    onWire.readBytes(readTag2Value);
    assertArrayEquals(indxValue, readTag2Value);

    // Message was completely read
    assertThat(onWire.readableBytes(), equalTo(0));
}

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From source file:org.lanternpowered.server.network.rcon.RconFramingHandler.java

License:MIT License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (in.readableBytes() < 4) {
        return;//www  .jav  a 2  s .  c  o  m
    }

    in.markReaderIndex();
    int length = in.readIntLE();
    if (in.readableBytes() < length) {
        in.resetReaderIndex();
        return;
    }

    final ByteBuf buf = ctx.alloc().buffer(length);
    in.readBytes(buf, length);
    out.add(buf);
}

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From source file:org.lanternpowered.server.network.rcon.RconHandler.java

License:MIT License

@Override
protected void channelRead0(ChannelHandlerContext ctx, ByteBuf buf) throws Exception {
    if (buf.readableBytes() < 8) {
        return;//  www.java2s  . c om
    }

    final int requestId = buf.readIntLE();
    final int type = buf.readIntLE();

    final byte[] payloadData = new byte[buf.readableBytes() - 2];
    buf.readBytes(payloadData);
    final String payload = new String(payloadData, StandardCharsets.UTF_8);

    // Two byte padding
    buf.readBytes(2);

    if (type == TYPE_LOGIN) {
        handleLogin(ctx, payload, this.password, requestId);
    } else if (type == TYPE_COMMAND) {
        handleCommand(ctx, payload, requestId);
    } else {
        sendLargeResponse(ctx, requestId, "Unknown request " + Integer.toHexString(type));
    }
}

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From source file:org.redisson.codec.MapCacheEventCodec.java

License:Apache License

private Object decode(ByteBuf buf, State state, Decoder<?> decoder) throws IOException {
    int keyLen;/*  ww w  .  j  av  a 2 s.  co m*/
    if (osType == OSType.WINDOWS) {
        keyLen = buf.readIntLE();
    } else if (osType == OSType.HPNONSTOP) {
        keyLen = (int) buf.readLong();
    } else {
        keyLen = (int) buf.readLongLE();
    }
    ByteBuf keyBuf = buf.readSlice(keyLen);
    Object key = decoder.decode(keyBuf, state);
    return key;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;
    int type = buf.readUnsignedShortLE();
    boolean alarm = (type & 0x8000) != 0;
    type = type & 0x7FFF;//from  ww w .j ava 2  s  .  c o  m
    buf.readUnsignedShortLE(); // length

    if (alarm) {
        sendSimpleMessage(channel, MSG_ACK_ALARM);
    }

    if (type == MSG_TRACKER_ID) {
        return null; // unsupported authentication type
    }

    if (type == MSG_TRACKER_ID_EXT) {

        buf.readUnsignedIntLE(); // id
        int length = buf.readUnsignedShortLE();
        buf.skipBytes(length);
        length = buf.readUnsignedShortLE();
        getDeviceSession(channel, remoteAddress, buf.readSlice(length).toString(StandardCharsets.US_ASCII));

    } else if (type == MSG_LAST_LOG_INDEX) {

        long index = buf.readUnsignedIntLE();
        if (index > 0) {
            newIndex = index;
            requestArchive(channel);
        }

    } else if (type == MSG_CURRENT_GPS_DATA || type == MSG_STATE_FULL_INFO_T104 || type == MSG_LOG_RECORDS) {

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

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

        int recordCount = 1;
        if (type == MSG_LOG_RECORDS) {
            recordCount = buf.readUnsignedShortLE();
        }

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

            int subtype = type;
            if (type == MSG_LOG_RECORDS) {
                position.set(Position.KEY_ARCHIVE, true);
                lastIndex = buf.readUnsignedIntLE() + 1;
                position.set(Position.KEY_INDEX, lastIndex);

                subtype = buf.readUnsignedShortLE();
                if (subtype != MSG_CURRENT_GPS_DATA && subtype != MSG_STATE_FULL_INFO_T104) {
                    buf.skipBytes(buf.readUnsignedShortLE());
                    continue;
                }
                buf.readUnsignedShortLE(); // length
            }

            position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
            position.setLatitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF);
            position.setLongitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF);

            if (subtype == MSG_STATE_FULL_INFO_T104) {
                int speed = buf.readUnsignedByte();
                position.setValid(speed != 255);
                position.setSpeed(UnitsConverter.knotsFromKph(speed));
                position.set(Position.KEY_HDOP, buf.readByte());
            } else {
                int speed = buf.readShortLE();
                position.setValid(speed != -1);
                position.setSpeed(UnitsConverter.knotsFromKph(speed * 0.01));
            }

            position.setCourse(buf.readShortLE() * 0.01);
            position.setAltitude(buf.readShortLE());

            if (subtype == MSG_STATE_FULL_INFO_T104) {

                position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
                position.set(Position.KEY_RSSI, buf.readUnsignedByte());
                position.set(Position.KEY_EVENT, buf.readUnsignedShortLE());
                position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
                position.set(Position.KEY_INPUT, buf.readUnsignedByte());
                position.set(Position.KEY_OUTPUT, buf.readUnsignedByte());

                for (int i = 1; i <= 8; i++) {
                    position.set(Position.PREFIX_ADC + i, buf.readUnsignedShortLE());
                }

                position.set(Position.PREFIX_COUNT + 1, buf.readUnsignedIntLE());
                position.set(Position.PREFIX_COUNT + 2, buf.readUnsignedIntLE());
                position.set(Position.PREFIX_COUNT + 3, buf.readUnsignedIntLE());
            }

            positions.add(position);
        }

        buf.readUnsignedIntLE(); // crc

        if (type == MSG_LOG_RECORDS) {
            requestArchive(channel);
        } else {
            sendSimpleMessage(channel, MSG_REQUEST_LAST_LOG_INDEX);
        }

        return positions;
    }

    return null;
}

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

License:Apache License

private void decodeCanData(ByteBuf buf, Position position) {

    buf.readUnsignedMedium(); // packet identifier
    position.set(Position.KEY_VERSION_FW, buf.readUnsignedByte());
    int count = buf.readUnsignedByte();
    buf.readUnsignedByte(); // batch count
    buf.readUnsignedShort(); // selector bit
    buf.readUnsignedInt(); // timestamp

    buf.skipBytes(8);/*from w ww .j  a v a 2  s.c om*/

    ArrayList<ByteBuf> values = new ArrayList<>(count);

    for (int i = 0; i < count; i++) {
        values.add(buf.readSlice(8));
    }

    for (int i = 0; i < count; i++) {
        ByteBuf value = values.get(i);
        switch (buf.readInt()) {
        case 0x20D:
            position.set(Position.KEY_RPM, value.readShortLE());
            position.set("dieselTemperature", value.readShortLE() * 0.1);
            position.set("batteryVoltage", value.readShortLE() * 0.01);
            position.set("supplyAirTempDep1", value.readShortLE() * 0.1);
            break;
        case 0x30D:
            position.set("activeAlarm", ByteBufUtil.hexDump(value));
            break;
        case 0x40C:
            position.set("airTempDep1", value.readShortLE() * 0.1);
            position.set("airTempDep2", value.readShortLE() * 0.1);
            break;
        case 0x40D:
            position.set("coldUnitState", ByteBufUtil.hexDump(value));
            break;
        case 0x50C:
            position.set("defrostTempDep1", value.readShortLE() * 0.1);
            position.set("defrostTempDep2", value.readShortLE() * 0.1);
            break;
        case 0x50D:
            position.set("condenserPressure", value.readShortLE() * 0.1);
            position.set("suctionPressure", value.readShortLE() * 0.1);
            break;
        case 0x58C:
            value.readByte();
            value.readShort(); // index
            switch (value.readByte()) {
            case 0x01:
                position.set("setpointZone1", value.readIntLE() * 0.1);
                break;
            case 0x02:
                position.set("setpointZone2", value.readIntLE() * 0.1);
                break;
            case 0x05:
                position.set("unitType", value.readIntLE());
                break;
            case 0x13:
                position.set("dieselHours", value.readIntLE() / 60 / 60);
                break;
            case 0x14:
                position.set("electricHours", value.readIntLE() / 60 / 60);
                break;
            case 0x17:
                position.set("serviceIndicator", value.readIntLE());
                break;
            case 0x18:
                position.set("softwareVersion", value.readIntLE() * 0.01);
                break;
            default:
                break;
            }
            break;
        default:
            LOGGER.warn("Aplicom CAN decoding error", new UnsupportedOperationException());
            break;
        }
    }
}

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

License:Apache License

private Position decodeTelemetry(Channel channel, SocketAddress remoteAddress, DeviceSession deviceSession,
        ByteBuf buf) {

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

    position.setTime(new Date(1009843200000L + buf.readUnsignedIntLE() * 1000)); // seconds since 2002
    position.setLatitude(buf.readIntLE() * 0.0000001);
    position.setLongitude(buf.readIntLE() * 0.0000001);

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

    position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
    buf.readUnsignedShortLE(); // max speed

    position.set(Position.KEY_INPUT, buf.readUnsignedShortLE());
    buf.readUnsignedIntLE(); // di 3 count
    buf.readUnsignedIntLE(); // di 4 count

    for (int i = 0; i < 5; i++) {
        position.set(Position.PREFIX_ADC + (i + 1), buf.readUnsignedShortLE());
    }//from   w w  w .j  a  v a2 s.  c o  m

    position.setCourse(buf.readUnsignedShortLE());

    position.set(Position.KEY_STATUS, buf.readUnsignedShortLE());
    position.set(Position.KEY_EVENT, buf.readUnsignedShortLE());
    position.set(Position.KEY_DRIVER_UNIQUE_ID, buf.readLongLE());

    int index = buf.readUnsignedShortLE();

    buf.readUnsignedShortLE(); // checksum

    if (channel != null) {
        ByteBuf response = Unpooled.buffer();
        response.writeInt(0xF1F1F1F1); // sync
        response.writeByte(MSG_TELEMETRY_CONFIRM);
        response.writeShortLE(2); // length
        response.writeShortLE(index);
        response.writeShort(Checksum.crc16(Checksum.CRC16_XMODEM, response.nioBuffer()));
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }

    return position;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    buf.readUnsignedByte(); // header
    int length = (buf.readUnsignedShortLE() & 0x7fff) + 3;

    List<Position> positions = new LinkedList<>();
    Set<Integer> tags = new HashSet<>();
    boolean hasLocation = false;
    Position position = new Position(getProtocolName());

    while (buf.readerIndex() < length) {

        // Check if new message started
        int tag = buf.readUnsignedByte();
        if (tags.contains(tag)) {
            if (hasLocation && position.getFixTime() != null) {
                positions.add(position);
            }/*from w  w  w  .j  a v  a2 s  . c  om*/
            tags.clear();
            hasLocation = false;
            position = new Position(getProtocolName());
        }
        tags.add(tag);

        switch (tag) {

        case TAG_IMEI:
            getDeviceSession(channel, remoteAddress, buf.readSlice(15).toString(StandardCharsets.US_ASCII));
            break;

        case TAG_DATE:
            position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
            break;

        case TAG_COORDINATES:
            hasLocation = true;
            position.setValid((buf.readUnsignedByte() & 0xf0) == 0x00);
            position.setLatitude(buf.readIntLE() / 1000000.0);
            position.setLongitude(buf.readIntLE() / 1000000.0);
            break;

        case TAG_SPEED_COURSE:
            position.setSpeed(buf.readUnsignedShortLE() * 0.0539957);
            position.setCourse(buf.readUnsignedShortLE() * 0.1);
            break;

        case TAG_ALTITUDE:
            position.setAltitude(buf.readShortLE());
            break;

        case TAG_STATUS:
            int status = buf.readUnsignedShortLE();
            position.set(Position.KEY_IGNITION, BitUtil.check(status, 9));
            if (BitUtil.check(status, 15)) {
                position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
            }
            position.set(Position.KEY_CHARGE, BitUtil.check(status, 2));
            break;

        case TAG_DIGITAL_INPUTS:
            int input = buf.readUnsignedShortLE();
            for (int i = 0; i < 16; i++) {
                position.set(Position.PREFIX_IO + (i + 1), BitUtil.check(input, i));
            }
            break;

        case TAG_DIGITAL_OUTPUTS:
            int output = buf.readUnsignedShortLE();
            for (int i = 0; i < 16; i++) {
                position.set(Position.PREFIX_IO + (i + 17), BitUtil.check(output, i));
            }
            break;

        case TAG_INPUT_VOLTAGE1:
            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE() / 1000.0);
            break;

        case TAG_INPUT_VOLTAGE2:
            position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShortLE() / 1000.0);
            break;

        case TAG_INPUT_VOLTAGE3:
            position.set(Position.PREFIX_ADC + 3, buf.readUnsignedShortLE() / 1000.0);
            break;

        case TAG_INPUT_VOLTAGE4:
            position.set(Position.PREFIX_ADC + 4, buf.readUnsignedShortLE() / 1000.0);
            break;

        case TAG_XT1:
        case TAG_XT2:
        case TAG_XT3:
            buf.skipBytes(16);
            break;

        default:
            break;

        }
    }

    if (hasLocation && position.getFixTime() != null) {
        positions.add(position);
    }

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

    sendReply(channel, buf.readUnsignedShortLE());

    for (Position p : positions) {
        p.setDeviceId(deviceSession.getDeviceId());
    }

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

    return positions;
}

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

License:Apache License

private void decodeObd(Position position, ByteBuf buf, boolean groups) {

    int count = buf.readUnsignedByte();

    int[] pids = new int[count];
    for (int i = 0; i < count; i++) {
        pids[i] = buf.readUnsignedShortLE() & 0xff;
    }/* w  w  w . ja  va2s.c o m*/

    if (groups) {
        buf.readUnsignedByte(); // group count
        buf.readUnsignedByte(); // group size
    }

    for (int i = 0; i < count; i++) {
        int value;
        switch (PID_LENGTH_MAP.get(pids[i])) {
        case 1:
            value = buf.readUnsignedByte();
            break;
        case 2:
            value = buf.readUnsignedShortLE();
            break;
        case 4:
            value = buf.readIntLE();
            break;
        default:
            value = 0;
            break;
        }
        position.add(ObdDecoder.decodeData(pids[i], value, false));
    }
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    boolean alternative = buf.getByte(buf.readerIndex() + 3) != 'P';

    buf.skipBytes(4); // system code
    int type = buf.readUnsignedByte();
    long deviceUniqueId = buf.readUnsignedIntLE();

    if (type != MSG_CLIENT_SERIAL) {
        buf.readUnsignedShortLE(); // communication control
    }/*  w w w.ja  v a  2  s .  c  o  m*/
    byte packetNumber = buf.readByte();

    sendReply(channel, remoteAddress, deviceUniqueId, packetNumber);

    if (type == MSG_CLIENT_STATUS) {

        Position position = new Position(getProtocolName());

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

        position.set(Position.KEY_VERSION_HW, buf.readUnsignedByte());
        position.set(Position.KEY_VERSION_FW, buf.readUnsignedByte());
        buf.readUnsignedByte(); // protocol version

        position.set(Position.KEY_STATUS, buf.readUnsignedByte() & 0x0f);

        buf.readUnsignedByte(); // operator / configuration flags
        buf.readUnsignedByte(); // reason data
        position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));

        position.set("mode", buf.readUnsignedByte());
        position.set(Position.KEY_INPUT, buf.readUnsignedIntLE());

        if (alternative) {
            buf.readUnsignedByte(); // input
            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE());
            position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShortLE());
        } else {
            buf.readUnsignedByte(); // operator
            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedIntLE());
        }

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

        buf.skipBytes(6); // multi-purpose data
        buf.readUnsignedShortLE(); // fix time
        buf.readUnsignedByte(); // location status
        buf.readUnsignedByte(); // mode 1
        buf.readUnsignedByte(); // mode 2

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

        position.setValid(true);

        if (alternative) {
            position.setLongitude(buf.readIntLE() / 10000000.0);
            position.setLatitude(buf.readIntLE() / 10000000.0);
        } else {
            position.setLongitude(buf.readIntLE() / Math.PI * 180 / 100000000);
            position.setLatitude(buf.readIntLE() / Math.PI * 180 / 100000000);
        }

        position.setAltitude(buf.readIntLE() * 0.01);

        if (alternative) {
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedIntLE()));
            position.setCourse(buf.readUnsignedShortLE() / 1000.0);
        } else {
            position.setSpeed(UnitsConverter.knotsFromMps(buf.readUnsignedIntLE() * 0.01));
            position.setCourse(buf.readUnsignedShortLE() / Math.PI * 180.0 / 1000.0);
        }

        DateBuilder dateBuilder = new DateBuilder()
                .setTimeReverse(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
                .setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedShortLE());
        position.setTime(dateBuilder.getDate());

        return position;
    }

    return null;
}

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