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(int index, int length, Charset charset);

Source Link

Document

Decodes this buffer's sub-region into a string with the specified character set.

Usage

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

License:Apache License

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

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

    if (type == MSG_IDENT || type == MSG_IDENT_FULL) {

        buf.readUnsignedIntLE(); // id
        int length = buf.readUnsignedShortLE();
        buf.skipBytes(length);/*from   w  w w . jav a 2 s .c o  m*/
        length = buf.readUnsignedShortLE();
        buf.skipBytes(length);
        length = buf.readUnsignedShortLE();
        String imei = buf.readSlice(length).toString(StandardCharsets.US_ASCII);
        getDeviceSession(channel, remoteAddress, imei);

    } else if (type == MSG_POINT || type == MSG_ALARM || type == MSG_LOGMSG) {

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

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

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

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

            if (type == MSG_LOGMSG) {
                position.set(Position.KEY_ARCHIVE, true);
                int subtype = buf.readUnsignedShortLE();
                if (subtype == MSG_ALARM) {
                    position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
                }
                if (buf.readUnsignedShortLE() > buf.readableBytes()) {
                    lastIndex += 1;
                    break; // workaround for device bug
                }
                lastIndex = buf.readUnsignedIntLE();
                position.set(Position.KEY_INDEX, lastIndex);
            } else {
                newIndex = buf.readUnsignedIntLE();
            }

            position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
            position.setLatitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF);
            position.setLongitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF);
            position.setSpeed(buf.readUnsignedIntLE() * 0.01);
            position.setCourse(buf.readUnsignedShortLE() * 0.01);
            position.setAltitude(buf.readUnsignedShortLE() * 0.01);

            int satellites = buf.readUnsignedByte();
            position.setValid(satellites >= 3);
            position.set(Position.KEY_SATELLITES, satellites);

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

            long extraFlags = buf.readLongLE();

            if (BitUtil.check(extraFlags, 0)) {
                int count = buf.readUnsignedShortLE();
                for (int i = 1; i <= count; i++) {
                    position.set(Position.PREFIX_ADC + i, buf.readUnsignedShortLE());
                }
            }

            if (BitUtil.check(extraFlags, 1)) {
                int size = buf.readUnsignedShortLE();
                position.set("can", buf.toString(buf.readerIndex(), size, StandardCharsets.US_ASCII));
                buf.skipBytes(size);
            }

            if (BitUtil.check(extraFlags, 2)) {
                position.set("passenger", ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedShortLE())));
            }

            if (type == MSG_ALARM) {
                position.set(Position.KEY_ALARM, true);
                byte[] response = { (byte) 0xC9, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
                channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(response), remoteAddress));
            }

            buf.readUnsignedIntLE(); // crc

            positions.add(position);
        }

        requestArchive(channel);

        return positions;
    }

    return null;
}

From source file:org.traccar.protocol.Pt502FrameDecoder.java

License:Apache License

@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {

    if (buf.readableBytes() < 10) {
        return null;
    }// ww  w .j a v a  2 s  .  c o  m

    if (buf.getUnsignedByte(buf.readerIndex()) == 0xbf
            && buf.toString(buf.readerIndex() + BINARY_HEADER, 4, StandardCharsets.US_ASCII).equals("$PHD")) {

        int length = buf.getUnsignedShortLE(buf.readerIndex() + 3);
        if (buf.readableBytes() >= length) {
            buf.skipBytes(BINARY_HEADER);
            ByteBuf result = buf.readRetainedSlice(length - BINARY_HEADER - 2);
            buf.skipBytes(2); // line break
            return result;
        }

    } else {

        if (buf.getUnsignedByte(buf.readerIndex()) == 0xbf) {
            buf.skipBytes(BINARY_HEADER);
        }

        int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '\r');
        if (index < 0) {
            index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '\n');
        }

        if (index > 0) {
            ByteBuf result = buf.readRetainedSlice(index - buf.readerIndex());
            while (buf.isReadable()
                    && (buf.getByte(buf.readerIndex()) == '\r' || buf.getByte(buf.readerIndex()) == '\n')) {
                buf.skipBytes(1);
            }
            return result;
        }

    }

    return null;
}

From source file:org.traccar.protocol.Pt502ProtocolDecoder.java

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    int typeEndIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');
    String type = buf.toString(buf.readerIndex(), typeEndIndex - buf.readerIndex(), StandardCharsets.US_ASCII);

    if (type.startsWith("$PHD")) {

        int dataIndex = buf.indexOf(typeEndIndex + 1, buf.writerIndex(), (byte) ',') + 1;
        buf.readerIndex(dataIndex);/*from  www.j  a v a  2  s .c  o m*/

        if (photo != null) {

            photo.writeBytes(buf.readSlice(buf.readableBytes()));

            if (photo.writableBytes() > 0) {

                requestPhotoFragment(channel);

            } else {

                DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
                String uniqueId = Context.getIdentityManager().getById(deviceSession.getDeviceId())
                        .getUniqueId();

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

                getLastLocation(position, null);

                position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(uniqueId, photo, "jpg"));
                photo.release();
                photo = null;

                return position;

            }

        }

    } else {

        if (type.startsWith("$PHO")) {
            int size = Integer.parseInt(type.split("-")[0].substring(4));
            if (size > 0) {
                photo = Unpooled.buffer(size);
                requestPhotoFragment(channel);
            }
        }

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

    }

    return null;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    buf.skipBytes(2); // header

    Position position = new Position(getProtocolName());

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress,
            String.valueOf(buf.readUnsignedShort()));
    if (deviceSession == null) {
        return null;
    }/*w  w w.j a  va2  s.c o  m*/
    position.setDeviceId(deviceSession.getDeviceId());

    position.set("mode", buf.readUnsignedByte());
    position.set(Position.KEY_COMMAND, buf.readUnsignedByte());
    position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001);

    buf.skipBytes(5); // status
    buf.readUnsignedShortLE(); // idleCount
    buf.readUnsignedShortLE(); // idleTime in seconds

    position.set(Position.KEY_DISTANCE, buf.readUnsignedIntLE());
    position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedIntLE());

    // Parse GPRMC
    int end = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '*');
    String gprmc = buf.toString(buf.readerIndex(), end - buf.readerIndex(), StandardCharsets.US_ASCII);
    Parser parser = new Parser(PATTERN, gprmc);
    if (!parser.matches()) {
        return null;
    }

    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));
    position.setCourse(parser.nextDouble(0));

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

    return position;
}

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

License:Apache License

private Position decodeCommandResponse(DeviceSession deviceSession, int type, ByteBuf buf) {
    Position position = new Position(getProtocolName());
    position.setDeviceId(deviceSession.getDeviceId());

    getLastLocation(position, null);/*from   w w w.j av a  2s . com*/

    position.set(Position.KEY_TYPE, type);

    switch (type) {
    case MSG_DEVICE_CONFIGURATION:
    case MSG_DEVICE_VERSION:
    case MSG_FIRMWARE_UPDATE:
    case MSG_SMS_VIA_GPRS_RESPONSE:
        position.set(Position.KEY_RESULT,
                buf.toString(buf.readerIndex(), buf.readableBytes() - 2, StandardCharsets.US_ASCII).trim());
        return position;
    case MSG_SET_IO:
        position.set(Position.KEY_RESULT, String.valueOf(buf.readUnsignedByte()));
        return position;
    default:
        return null;
    }
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    int apiNumber = buf.readUnsignedShort();
    int commandType = buf.readUnsignedByte();
    int messageType = BitUtil.from(buf.readUnsignedByte(), 4);
    long mask = defaultMask;
    if (buf.readUnsignedByte() == 4) {
        mask = buf.readUnsignedInt();/*  w  w w.jav  a  2s .  c o  m*/
    }

    // Binary position report
    if (apiNumber == 5 && commandType == 2 && messageType == 1 && BitUtil.check(mask, 0)) {

        Position position = new Position(getProtocolName());

        if (BitUtil.check(mask, 1)) {
            position.set(Position.KEY_STATUS, buf.readUnsignedInt());
        }

        String id;
        if (BitUtil.check(mask, 23)) {
            id = buf.toString(buf.readerIndex(), 8, StandardCharsets.US_ASCII).trim();
            buf.skipBytes(8);
        } else if (BitUtil.check(mask, 2)) {
            id = buf.toString(buf.readerIndex(), 22, StandardCharsets.US_ASCII).trim();
            buf.skipBytes(22);
        } else {
            LOGGER.warn("No device id field");
            return null;
        }
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
        if (deviceSession == null) {
            return null;
        }
        position.setDeviceId(deviceSession.getDeviceId());

        if (BitUtil.check(mask, 3)) {
            position.set(Position.PREFIX_IO + 1, buf.readUnsignedShort());
        }

        if (BitUtil.check(mask, 4)) {
            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
        }

        if (BitUtil.check(mask, 5)) {
            position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());
        }

        if (BitUtil.check(mask, 7)) {
            buf.readUnsignedByte(); // function category
        }

        DateBuilder dateBuilder = new DateBuilder();

        if (BitUtil.check(mask, 8)) {
            dateBuilder.setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
        }

        if (BitUtil.check(mask, 9)) {
            position.setValid(buf.readUnsignedByte() == 1); // gps status
        }

        if (BitUtil.check(mask, 10)) {
            position.setLatitude(convertCoordinate(buf.readUnsignedInt()));
        }

        if (BitUtil.check(mask, 11)) {
            position.setLongitude(convertCoordinate(buf.readUnsignedInt()));
        }

        if (BitUtil.check(mask, 12)) {
            position.setSpeed(buf.readUnsignedShort() / 10.0);
        }

        if (BitUtil.check(mask, 13)) {
            position.setCourse(buf.readUnsignedShort() / 10.0);
        }

        if (BitUtil.check(mask, 14)) {
            dateBuilder.setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
        }

        position.setTime(dateBuilder.getDate());

        if (BitUtil.check(mask, 15)) {
            position.setAltitude(buf.readMedium());
        }

        if (BitUtil.check(mask, 16)) {
            position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
        }

        if (BitUtil.check(mask, 17)) {
            position.set(Position.KEY_BATTERY, buf.readUnsignedShort());
        }

        if (BitUtil.check(mask, 20)) {
            position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedInt());
        }

        if (BitUtil.check(mask, 21)) {
            position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
        }

        if (BitUtil.check(mask, 22)) {
            buf.skipBytes(6); // time of message generation
        }

        if (BitUtil.check(mask, 24)) {
            position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001);
        }

        if (BitUtil.check(mask, 25)) {
            buf.skipBytes(18); // gps overspeed
        }

        if (BitUtil.check(mask, 26)) {
            buf.skipBytes(54); // cell information
        }

        if (BitUtil.check(mask, 28)) {
            position.set(Position.KEY_INDEX, buf.readUnsignedShort());
        }

        return position;
    }

    return null;
}

From source file:org.traccar.protocol.T57FrameDecoder.java

License:Apache License

@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {

    if (buf.readableBytes() < 10) {
        return null;
    }//from  w w w. j  a  v  a 2  s .c  o m

    String type = buf.toString(buf.readerIndex() + 5, 2, StandardCharsets.US_ASCII);
    int count = type.equals("F3") ? 12 : 14;

    int index = 0;
    while (index >= 0 && count > 0) {
        index = buf.indexOf(index + 1, buf.writerIndex(), (byte) '#');
        if (index > 0) {
            count -= 1;
        }
    }

    return index > 0 ? buf.readRetainedSlice(index + 1 - buf.readerIndex()) : null;
}

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

License:Apache License

private void parseIdentification(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {

    int length = buf.readUnsignedShort();
    String imei = buf.toString(buf.readerIndex(), length, StandardCharsets.US_ASCII);
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);

    if (channel != null) {
        ByteBuf response = Unpooled.buffer(1);
        if (deviceSession != null) {
            response.writeByte(1);/*from w w w  .  j  av a 2 s. c o m*/
        } else {
            response.writeByte(0);
        }
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    buf.skipBytes(2); // header
    ByteBuf id = buf.readSlice(12);/*  w  w  w. ja va  2 s  .  c  o m*/
    buf.readUnsignedByte(); // separator
    int type = buf.readUnsignedByte();
    buf.readUnsignedShort(); // length

    if (type == MSG_LOGIN) {

        int command = buf.readUnsignedByte(); // 0x00 - heartbeat

        if (command == 0x01) {
            String imei = buf.toString(buf.readerIndex(), 15, StandardCharsets.US_ASCII);
            DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
            if (deviceSession != null && channel != null) {
                ByteBuf response = Unpooled.buffer();
                response.writeByte(0x48);
                response.writeByte(0x52); // header
                response.writeBytes(id);
                response.writeByte(0x2c); // separator
                response.writeByte(type);
                response.writeShort(0x0002); // length
                response.writeShort(0x8000);
                response.writeShort(0x0000); // checksum
                channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
            }
        }

    } else if (type == MSG_GPS) {

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

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

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

        int flags = buf.readUnsignedByte();

        position.setValid(true);
        position.setLatitude(convertCoordinate(buf.readUnsignedInt(), !BitUtil.check(flags, 0)));
        position.setLongitude(convertCoordinate(buf.readUnsignedInt(), !BitUtil.check(flags, 1)));

        position.setSpeed(buf.readUnsignedByte());
        position.setCourse(buf.readUnsignedByte());

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

        return position;

    }

    return null;
}

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

License:Apache License

@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {

    if (buf.readableBytes() < 10) {
        return null;
    }//ww w.j a v  a  2s . co  m

    int beginIndex = BufferUtil.indexOf("$$", buf);
    if (beginIndex == -1) {
        return null;
    } else if (beginIndex > buf.readerIndex()) {
        buf.readerIndex(beginIndex);
    }

    int length;

    if (buf.getByte(buf.readerIndex() + 2) == (byte) '0') {
        length = Integer.parseInt(buf.toString(buf.readerIndex() + 2, 4, StandardCharsets.US_ASCII));
    } else {
        length = Integer.parseInt(buf.toString(buf.readerIndex() + 2, 2, StandardCharsets.US_ASCII), 16);
    }

    if (length <= buf.readableBytes()) {
        return buf.readRetainedSlice(length);
    }

    return null;
}