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.spongepowered.common.network.ByteBufUtils.java

License:MIT License

public static String readUTF8String(ByteBuf from) {
    int len = readVarInt(from, 2);
    String str = from.toString(from.readerIndex(), len, Charsets.UTF_8);
    from.readerIndex(from.readerIndex() + len);
    return str;/*from ww w .  j a v a 2s .c  om*/
}

From source file:org.springframework.cloud.gateway.rsocket.support.Metadata.java

License:Apache License

private static String decodeString(ByteBuf byteBuf, AtomicInteger offset) {
    int length = byteBuf.getByte(offset.get());
    int index = offset.addAndGet(Byte.BYTES);
    String s = byteBuf.toString(index, length, StandardCharsets.UTF_8);
    offset.addAndGet(length);/*  www  .  j a  v a2  s. c  o m*/
    return s;
}

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

License:Apache License

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

    if (buf.readableBytes() >= 2) {

        if (buf.getUnsignedShort(buf.readerIndex()) == 0xfe02) {

            if (buf.readableBytes() >= KEEPALIVE_LENGTH) {
                return buf.readRetainedSlice(KEEPALIVE_LENGTH);
            }/*from ww w  .j  a v a2  s . c  o  m*/

        } else if (buf.getUnsignedShort(buf.readerIndex()) == 0x4050
                && buf.getByte(buf.readerIndex() + 2) != ',') {

            if (buf.readableBytes() > 6) {
                int length = buf.getUnsignedShort(buf.readerIndex() + 4) + 4 + 2;
                if (buf.readableBytes() >= length) {
                    return buf.readRetainedSlice(length);
                }
            }

        } else {

            int lengthStart = buf.indexOf(buf.readerIndex() + 3, buf.writerIndex(), (byte) ',') + 1;
            if (lengthStart > 0) {
                int lengthEnd = buf.indexOf(lengthStart, buf.writerIndex(), (byte) ',');
                if (lengthEnd > 0) {
                    int length = lengthEnd + Integer.parseInt(
                            buf.toString(lengthStart, lengthEnd - lengthStart, StandardCharsets.US_ASCII));
                    if (buf.readableBytes() > length && buf.getByte(buf.readerIndex() + length) == '\n') {
                        length += 1;
                    }
                    if (buf.readableBytes() >= length) {
                        return buf.readRetainedSlice(length);
                    }
                }
            } else {
                int endIndex = BufferUtil.indexOf("\r\n", buf);
                if (endIndex > 0) {
                    return buf.readRetainedSlice(endIndex - buf.readerIndex() + 2);
                }
            }

        }

    }

    return null;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

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

    String imei = ByteBufUtil.hexDump(buf.readSlice(7));
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei,
            imei + Checksum.luhn(Long.parseLong(imei)));
    if (deviceSession == null) {
        return null;
    }//from w ww  .  ja v  a2  s .c  o m

    int type = buf.readUnsignedShort();

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

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

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

        if (parser.hasNext(15)) {

            position.setTime(parser.nextDateTime());

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

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

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

        } else {

            getLastLocation(position, null);

        }

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

        return position;
    }

    return null;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    // Find IMEI number
    int index = -1;
    for (int i = buf.readerIndex(); i < buf.writerIndex() - IMEI_LENGTH; i++) {
        index = i;/* w  w  w . ja  v  a 2 s.com*/
        for (int j = i; j < i + IMEI_LENGTH; j++) {
            if (!Character.isDigit((char) buf.getByte(j))) {
                index = -1;
                break;
            }
        }
        if (index > 0) {
            break;
        }
    }
    if (index == -1) {
        return null;
    }

    String imei = buf.toString(index, IMEI_LENGTH, StandardCharsets.US_ASCII);
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
    if (deviceSession == null) {
        return null;
    }

    // Find NMEA sentence
    int start = BufferUtil.indexOf("GPRMC", buf);
    if (start == -1) {
        return null;
    }

    String sentence = buf.toString(start, buf.readableBytes() - start, 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(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.Gl200FrameDecoder.java

License:Apache License

public static boolean isBinary(ByteBuf buf) {
    String header = buf.toString(buf.readerIndex(), 4, StandardCharsets.US_ASCII);
    if (header.equals("+ACK")) {
        return buf.getByte(buf.readerIndex() + header.length()) != (byte) ':';
    } else {//ww w  .  j  a  v  a  2s  .c om
        return BINARY_HEADERS.contains(header);
    }
}

From source file:org.traccar.protocol.Gl200FrameDecoder.java

License:Apache License

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

    if (buf.readableBytes() < MINIMUM_LENGTH) {
        return null;
    }//from   ww w.ja  v  a2 s  .c o m

    if (isBinary(buf)) {

        int length;
        switch (buf.toString(buf.readerIndex(), 4, StandardCharsets.US_ASCII)) {
        case "+ACK":
            length = buf.getUnsignedByte(buf.readerIndex() + 6);
            break;
        case "+INF":
        case "+BNF":
            length = buf.getUnsignedShort(buf.readerIndex() + 7);
            break;
        case "+HBD":
            length = buf.getUnsignedByte(buf.readerIndex() + 5);
            break;
        case "+CRD":
        case "+BRD":
            length = buf.getUnsignedShort(buf.readerIndex() + 6);
            break;
        default:
            length = buf.getUnsignedShort(buf.readerIndex() + 9);
            break;
        }

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

    } else {

        int endIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '$');
        if (endIndex < 0) {
            endIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0);
        }
        if (endIndex > 0) {
            ByteBuf frame = buf.readRetainedSlice(endIndex - buf.readerIndex());
            buf.readByte(); // delimiter
            return frame;
        }

    }

    return null;
}

From source file:org.traccar.protocol.Gps056FrameDecoder.java

License:Apache License

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

    if (buf.readableBytes() >= MESSAGE_HEADER) {
        int length = Integer.parseInt(buf.toString(2, 2, StandardCharsets.US_ASCII)) + 5;
        if (buf.readableBytes() >= length) {
            ByteBuf frame = buf.readRetainedSlice(length);
            while (buf.isReadable() && buf.getUnsignedByte(buf.readerIndex()) != '$') {
                buf.readByte();/*from w  ww.j ava2  s  .  co  m*/
            }
            return frame;
        }
    }

    return null;
}

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;
    }//from  w  w  w.  j  a  va 2 s  .  c o m

    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

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

    ByteBuf buf = (ByteBuf) msg;
    String marker = buf.toString(0, 1, StandardCharsets.US_ASCII);

    switch (marker) {
    case "*":
        String sentence = buf.toString(StandardCharsets.US_ASCII).trim();
        int typeStart = sentence.indexOf(',', sentence.indexOf(',') + 1) + 1;
        int typeEnd = sentence.indexOf(',', typeStart);
        if (typeEnd > 0) {
            String type = sentence.substring(typeStart, typeEnd);
            switch (type) {
            case "NBR":
                return decodeLbs(sentence, channel, remoteAddress);
            case "LINK":
                return decodeLink(sentence, channel, remoteAddress);
            case "V3":
                return decodeV3(sentence, channel, remoteAddress);
            case "VP1":
                return decodeVp1(sentence, channel, remoteAddress);
            default:
                return decodeText(sentence, channel, remoteAddress);
            }/* ww w . j a  v  a  2  s .c  o m*/
        } else {
            return null;
        }
    case "$":
        return decodeBinary(buf, channel, remoteAddress);
    case "X":
    default:
        return null;
    }
}