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.MegastekFrameDecoder.java

License:Apache License

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

    if (buf.readableBytes() < 10) {
        return null;
    }// www  . j  av a2  s .c  o  m

    if (Character.isDigit(buf.getByte(buf.readerIndex()))) {
        int length = 4 + Integer.parseInt(buf.toString(buf.readerIndex(), 4, StandardCharsets.US_ASCII));
        if (buf.readableBytes() >= length) {
            return buf.readRetainedSlice(length);
        }
    } else {
        while (buf.getByte(buf.readerIndex()) == '\r' || buf.getByte(buf.readerIndex()) == '\n') {
            buf.skipBytes(1);
        }
        int delimiter = BufferUtil.indexOf("\r\n", buf);
        if (delimiter == -1) {
            delimiter = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '!');
        }
        if (delimiter != -1) {
            ByteBuf result = buf.readRetainedSlice(delimiter - buf.readerIndex());
            buf.skipBytes(1);
            return result;
        }
    }

    return null;
}

From source file:org.traccar.protocol.MeiligaoProtocolDecoder.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.readShort(); // length
    ByteBuf id = buf.readSlice(7);/* w w  w  . j  a  va2 s  . c o m*/
    int command = buf.readUnsignedShort();

    if (command == MSG_LOGIN) {
        ByteBuf response = Unpooled.wrappedBuffer(new byte[] { 0x01 });
        sendResponse(channel, remoteAddress, id, MSG_LOGIN_RESPONSE, response);
        return null;
    } else if (command == MSG_HEARTBEAT) {
        ByteBuf response = Unpooled.wrappedBuffer(new byte[] { 0x01 });
        sendResponse(channel, remoteAddress, id, MSG_HEARTBEAT, response);
        return null;
    } else if (command == MSG_SERVER) {
        ByteBuf response = Unpooled.copiedBuffer(getServer(channel, ':'), StandardCharsets.US_ASCII);
        sendResponse(channel, remoteAddress, id, MSG_SERVER, response);
        return null;
    } else if (command == MSG_UPLOAD_PHOTO) {
        byte imageIndex = buf.readByte();
        photos.put(imageIndex, Unpooled.buffer());
        ByteBuf response = Unpooled.copiedBuffer(new byte[] { imageIndex });
        sendResponse(channel, remoteAddress, id, MSG_UPLOAD_PHOTO_RESPONSE, response);
        return null;
    } else if (command == MSG_UPLOAD_COMPLETE) {
        byte imageIndex = buf.readByte();
        ByteBuf response = Unpooled.copiedBuffer(new byte[] { imageIndex, 0, 0 });
        sendResponse(channel, remoteAddress, id, MSG_RETRANSMISSION, response);
        return null;
    }

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

    if (command == MSG_DATA_PHOTO) {

        byte imageIndex = buf.readByte();
        buf.readUnsignedShort(); // image footage
        buf.readUnsignedByte(); // total packets
        buf.readUnsignedByte(); // packet index

        photos.get(imageIndex).writeBytes(buf, buf.readableBytes() - 2 - 2);

        return null;

    } else if (command == MSG_RETRANSMISSION) {

        return decodeRetransmission(buf, deviceSession);

    } else {

        Position position = new Position(getProtocolName());

        position.setDeviceId(deviceSession.getDeviceId());

        if (command == MSG_ALARM) {
            short alarmCode = buf.readUnsignedByte();
            position.set(Position.KEY_ALARM, decodeAlarm(alarmCode));
            if (alarmCode >= 0x02 && alarmCode <= 0x05) {
                position.set(Position.PREFIX_IN + alarmCode, 1);
            } else if (alarmCode >= 0x32 && alarmCode <= 0x35) {
                position.set(Position.PREFIX_IN + (alarmCode - 0x30), 0);
            }
        } else if (command == MSG_POSITION_LOGGED) {
            buf.skipBytes(6);
        } else if (command == MSG_RFID) {
            for (int i = 0; i < 15; i++) {
                long rfid = buf.readUnsignedInt();
                if (rfid != 0) {
                    String card = String.format("%010d", rfid);
                    position.set("card" + (i + 1), card);
                    position.set(Position.KEY_DRIVER_UNIQUE_ID, card);
                }
            }
        } else if (command == MSG_POSITION_IMAGE) {
            byte imageIndex = buf.readByte();
            buf.readUnsignedByte(); // image upload type
            String uniqueId = Context.getIdentityManager().getById(deviceSession.getDeviceId()).getUniqueId();
            ByteBuf photo = photos.remove(imageIndex);
            try {
                position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(uniqueId, photo, "jpg"));
            } finally {
                photo.release();
            }
        }

        String sentence = buf.toString(buf.readerIndex(), buf.readableBytes() - 4, StandardCharsets.US_ASCII);

        switch (command) {
        case MSG_POSITION:
        case MSG_POSITION_LOGGED:
        case MSG_ALARM:
        case MSG_POSITION_IMAGE:
            return decodeRegular(position, sentence);
        case MSG_RFID:
            return decodeRfid(position, sentence);
        case MSG_OBD_RT:
            return decodeObd(position, sentence);
        case MSG_OBD_RTA:
            return decodeObdA(position, sentence);
        default:
            return null;
        }

    }
}

From source file:org.traccar.protocol.MeitrackFrameDecoder.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  va  2 s.  co m

    int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');
    if (index != -1) {
        int length = index - buf.readerIndex() + Integer.parseInt(
                buf.toString(buf.readerIndex() + 3, index - buf.readerIndex() - 3, StandardCharsets.US_ASCII));
        if (buf.readableBytes() >= length) {
            return buf.readRetainedSlice(length);
        }
    }

    return null;
}

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

License:Apache License

private List<Position> decodeBinaryC(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
    List<Position> positions = new LinkedList<>();

    String flag = buf.toString(2, 1, StandardCharsets.US_ASCII);
    int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');

    String imei = buf.toString(index + 1, 15, StandardCharsets.US_ASCII);
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
    if (deviceSession == null) {
        return null;
    }/* w  ww .  j  a  v a2  s. c  om*/

    buf.skipBytes(index + 1 + 15 + 1 + 3 + 1 + 2 + 2 + 4);

    while (buf.readableBytes() >= 0x34) {

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

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

        position.setLatitude(buf.readIntLE() * 0.000001);
        position.setLongitude(buf.readIntLE() * 0.000001);

        position.setTime(new Date((946684800 + buf.readUnsignedIntLE()) * 1000)); // 946684800 = 2000-01-01

        position.setValid(buf.readUnsignedByte() == 1);

        position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
        int rssi = buf.readUnsignedByte();

        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
        position.setCourse(buf.readUnsignedShortLE());

        position.set(Position.KEY_HDOP, buf.readUnsignedShortLE() * 0.1);

        position.setAltitude(buf.readUnsignedShortLE());

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

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

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

        position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE());
        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01);
        position.set(Position.KEY_POWER, buf.readUnsignedShortLE());

        buf.readUnsignedIntLE(); // geo-fence

        positions.add(position);
    }

    if (channel != null) {
        StringBuilder command = new StringBuilder("@@");
        command.append(flag).append(27 + positions.size() / 10).append(",");
        command.append(imei).append(",CCC,").append(positions.size()).append("*");
        int checksum = 0;
        for (int i = 0; i < command.length(); i += 1) {
            checksum += command.charAt(i);
        }
        command.append(String.format("%02x", checksum & 0xff).toUpperCase());
        command.append("\r\n");
        channel.writeAndFlush(new NetworkMessage(command.toString(), remoteAddress)); // delete processed data
    }

    return positions;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');
    String imei = buf.toString(index + 1, 15, StandardCharsets.US_ASCII);
    index = buf.indexOf(index + 1, buf.writerIndex(), (byte) ',');
    String type = buf.toString(index + 1, 3, StandardCharsets.US_ASCII);

    switch (type) {
    case "D00":
        if (photo == null) {
            photo = Unpooled.buffer();/*from w ww  . j a  v  a 2s  . c om*/
        }

        index = index + 1 + type.length() + 1;
        int endIndex = buf.indexOf(index, buf.writerIndex(), (byte) ',');
        String file = buf.toString(index, endIndex - index, StandardCharsets.US_ASCII);
        index = endIndex + 1;
        endIndex = buf.indexOf(index, buf.writerIndex(), (byte) ',');
        int total = Integer.parseInt(buf.toString(index, endIndex - index, StandardCharsets.US_ASCII));
        index = endIndex + 1;
        endIndex = buf.indexOf(index, buf.writerIndex(), (byte) ',');
        int current = Integer.parseInt(buf.toString(index, endIndex - index, StandardCharsets.US_ASCII));

        buf.readerIndex(endIndex + 1);
        photo.writeBytes(buf.readSlice(buf.readableBytes() - 1 - 2 - 2));

        if (current == total - 1) {
            Position position = new Position(getProtocolName());
            position.setDeviceId(getDeviceSession(channel, remoteAddress, imei).getDeviceId());

            getLastLocation(position, null);

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

            return position;
        } else {
            if ((current + 1) % 8 == 0) {
                requestPhotoPacket(channel, remoteAddress, imei, file, current + 1);
            }
            return null;
        }
    case "D03":
        photo = Unpooled.buffer();
        requestPhotoPacket(channel, remoteAddress, imei, "camera_picture.jpg", 0);
        return null;
    case "CCC":
        return decodeBinaryC(channel, remoteAddress, buf);
    case "CCE":
        return decodeBinaryE(channel, remoteAddress, buf);
    default:
        return decodeRegular(channel, remoteAddress, buf);
    }
}

From source file:org.traccar.protocol.Mta6ProtocolDecoder.java

License:Apache License

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

    FullHttpRequest request = (FullHttpRequest) msg;
    ByteBuf buf = request.content();

    buf.skipBytes("id=".length());
    int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '&');
    String uniqueId = buf.toString(buf.readerIndex(), index - buf.readerIndex(), StandardCharsets.US_ASCII);
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, uniqueId);
    if (deviceSession == null) {
        return null;
    }/*from  w w  w .jav a 2s .co m*/
    buf.skipBytes(uniqueId.length());
    buf.skipBytes("&bin=".length());

    short packetId = buf.readUnsignedByte();
    short offset = buf.readUnsignedByte(); // dataOffset
    short packetCount = buf.readUnsignedByte();
    buf.readUnsignedByte(); // reserved
    buf.readUnsignedByte(); // timezone
    buf.skipBytes(offset - 5);

    if (channel != null) {
        sendContinue(channel);
        sendResponse(channel, packetId, packetCount);
    }

    if (packetId == 0x31 || packetId == 0x32 || packetId == 0x36) {
        if (simple) {
            return parseFormatA1(deviceSession, buf);
        } else {
            return parseFormatA(deviceSession, buf);
        }
    } // else if (0x34 0x38 0x4F 0x59)

    return null;
}

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

License:Apache License

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

    if (buf.getByte(buf.readerIndex()) == 0x7F) {
        return buf.readRetainedSlice(1); // keep alive
    }//  w  w  w.  j a  v  a 2  s . c  o m

    if (ctx != null && flexDataSize == 0) {
        NavisProtocolDecoder protocolDecoder = BasePipelineFactory.getHandler(ctx.pipeline(),
                NavisProtocolDecoder.class);
        if (protocolDecoder != null) {
            flexDataSize = protocolDecoder.getFlexDataSize();
        }
    }

    if (flexDataSize > 0) {

        if (buf.readableBytes() > FLEX_HEADER_LENGTH) {
            int length = 0;
            String type = buf.toString(buf.readerIndex(), 2, StandardCharsets.US_ASCII);
            switch (type) {
            // FLEX 1.0
            case "~A":
                length = flexDataSize * buf.getByte(buf.readerIndex() + FLEX_HEADER_LENGTH) + 1 + 1;
                break;
            case "~T":
                length = flexDataSize + 4 + 1;
                break;
            case "~C":
                length = flexDataSize + 1;
                break;
            // FLEX 2.0 (Extra packages)
            case "~E":
                length++;
                for (int i = 0; i < buf.getByte(buf.readerIndex() + FLEX_HEADER_LENGTH); i++) {
                    if (buf.readableBytes() > FLEX_HEADER_LENGTH + length + 1) {
                        length += buf.getUnsignedShort(length + FLEX_HEADER_LENGTH) + 2;
                    } else {
                        return null;
                    }
                }
                length++;
                break;
            case "~X":
                length = buf.getUnsignedShortLE(buf.readerIndex() + FLEX_HEADER_LENGTH) + 4 + 1;
                break;
            default:
                return null;
            }

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

    } else {

        if (buf.readableBytes() < NTCB_HEADER_LENGTH) {
            return null;
        }

        int length = NTCB_HEADER_LENGTH + buf.getUnsignedShortLE(buf.readerIndex() + NTCB_LENGTH_OFFSET);
        if (buf.readableBytes() >= length) {
            return buf.readRetainedSlice(length);
        }

    }

    return null;
}

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

License:Apache License

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

    prefix = buf.toString(buf.readerIndex(), 4, StandardCharsets.US_ASCII);
    buf.skipBytes(prefix.length()); // prefix @NTC by default
    serverId = buf.readUnsignedIntLE();//from   www .j a v a 2 s .co m
    deviceUniqueId = buf.readUnsignedIntLE();
    int length = buf.readUnsignedShortLE();
    buf.skipBytes(2); // header and data XOR checksum

    if (length == 0) {
        return null; // keep alive message
    }

    String type = buf.toString(buf.readerIndex(), 3, StandardCharsets.US_ASCII);
    buf.skipBytes(type.length());

    if (type.equals("*>S")) {
        return processHandshake(channel, remoteAddress, buf);
    } else {
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession != null) {
            switch (type) {
            case "*>A":
                return processNtcbArray(deviceSession, channel, buf);
            case "*>T":
                return processNtcbSingle(deviceSession, channel, buf);
            case "*>F":
                buf.skipBytes(3);
                return processFlexNegotiation(channel, buf);
            default:
                break;
            }
        }
    }

    return null;
}

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

License:Apache License

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

    if (buf.getByte(buf.readerIndex()) == 0x7F) {
        return null; // keep alive
    }/*from www. ja va  2  s. c  o m*/

    String type = buf.toString(buf.readerIndex(), 2, StandardCharsets.US_ASCII);
    buf.skipBytes(type.length());

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
    if (deviceSession != null) {
        switch (type) {
        // FLEX 1.0
        case "~A":
            return processFlexArray(this::parseFlexPosition, type, deviceSession, channel, buf);
        case "~T":
        case "~C":
            return processFlexSingle(this::parseFlexPosition, type, deviceSession, channel, buf);
        // FLEX 2.0 (extra packages)
        case "~E":
            return processFlexArray(this::parseFlex20Position, type, deviceSession, channel, buf);
        case "~X":
            return processFlexSingle(this::parseFlex20Position, type, deviceSession, channel, buf);
        default:
            break;
        }
    }

    return null;
}

From source file:org.traccar.protocol.NvsProtocolDecoder.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()) == 0) {

        buf.readUnsignedShort(); // length

        String imei = buf.toString(buf.readerIndex(), 15, StandardCharsets.US_ASCII);

        if (getDeviceSession(channel, remoteAddress, imei) != null) {
            sendResponse(channel, remoteAddress, "OK");
        } else {/*from w w w  .  ja v a  2 s .com*/
            sendResponse(channel, remoteAddress, "NO01");
        }

    } else {

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

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

        buf.skipBytes(4); // marker
        buf.readUnsignedShort(); // length
        buf.readLong(); // imei
        buf.readUnsignedByte(); // codec
        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));

            position.set("reason", buf.readUnsignedByte());

            position.setLongitude(buf.readInt() / 10000000.0);
            position.setLatitude(buf.readInt() / 10000000.0);
            position.setAltitude(buf.readShort());
            position.setCourse(buf.readUnsignedShort());

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

            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
            position.setValid(buf.readUnsignedByte() != 0);

            buf.readUnsignedByte(); // used systems

            buf.readUnsignedByte(); // cause element id

            // Read 1 byte data
            int cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                position.set(Position.PREFIX_IO + buf.readUnsignedByte(), buf.readUnsignedByte());
            }

            // Read 2 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                position.set(Position.PREFIX_IO + buf.readUnsignedByte(), buf.readUnsignedShort());
            }

            // Read 4 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                position.set(Position.PREFIX_IO + buf.readUnsignedByte(), buf.readUnsignedInt());
            }

            // Read 8 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                position.set(Position.PREFIX_IO + buf.readUnsignedByte(), buf.readLong());
            }

            positions.add(position);
        }

        return positions;

    }

    return null;
}