Example usage for io.netty.buffer ByteBuf indexOf

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

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Introduction

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

Prototype

public abstract int indexOf(int fromIndex, int toIndex, byte value);

Source Link

Document

Locates the first occurrence of the specified value in this buffer.

Usage

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

License:Apache License

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

    buf.readerIndex(buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',') + 1);
    String imei = buf.readSlice(15).toString(StandardCharsets.US_ASCII);
    buf.skipBytes(1 + 3 + 1);//from ww  w.j av  a  2s  . com

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

    buf.readUnsignedIntLE(); // remaining cache
    int count = buf.readUnsignedShortLE();

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

        buf.readUnsignedShortLE(); // length
        buf.readUnsignedShortLE(); // index

        int paramCount = buf.readUnsignedByte();
        for (int j = 0; j < paramCount; j++) {
            int id = buf.readUnsignedByte();
            switch (id) {
            case 0x01:
                position.set(Position.KEY_EVENT, buf.readUnsignedByte());
                break;
            case 0x05:
                position.setValid(buf.readUnsignedByte() > 0);
                break;
            case 0x06:
                position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
                break;
            case 0x07:
                position.set(Position.KEY_RSSI, buf.readUnsignedByte());
                break;
            default:
                buf.readUnsignedByte();
                break;
            }
        }

        paramCount = buf.readUnsignedByte();
        for (int j = 0; j < paramCount; j++) {
            int id = buf.readUnsignedByte();
            switch (id) {
            case 0x08:
                position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
                break;
            case 0x09:
                position.setCourse(buf.readUnsignedShortLE());
                break;
            case 0x0B:
                position.setAltitude(buf.readShortLE());
                break;
            case 0x19:
                position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01);
                break;
            case 0x1A:
                position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.01);
                break;
            default:
                buf.readUnsignedShortLE();
                break;
            }
        }

        paramCount = buf.readUnsignedByte();
        for (int j = 0; j < paramCount; j++) {
            int id = buf.readUnsignedByte();
            switch (id) {
            case 0x02:
                position.setLatitude(buf.readIntLE() * 0.000001);
                break;
            case 0x03:
                position.setLongitude(buf.readIntLE() * 0.000001);
                break;
            case 0x04:
                position.setTime(new Date((946684800 + buf.readUnsignedIntLE()) * 1000)); // 2000-01-01
                break;
            case 0x0D:
                position.set("runtime", buf.readUnsignedIntLE());
                break;
            default:
                buf.readUnsignedIntLE();
                break;
            }
        }

        paramCount = buf.readUnsignedByte();
        for (int j = 0; j < paramCount; j++) {
            buf.readUnsignedByte(); // id
            buf.skipBytes(buf.readUnsignedByte()); // value
        }

        positions.add(position);
    }

    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   ww w. 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  ww.j a v a 2 s.c  o  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.MxtFrameDecoder.java

License:Apache License

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

    if (buf.readableBytes() < 2) {
        return null;
    }//from  w ww.j av  a2  s. c o m

    int index = buf.indexOf(buf.readerIndex() + 1, buf.writerIndex(), (byte) 0x04);
    if (index != -1) {
        ByteBuf result = Unpooled.buffer(index + 1 - buf.readerIndex());

        while (buf.readerIndex() <= index) {
            int b = buf.readUnsignedByte();
            if (b == 0x10) {
                result.writeByte(buf.readUnsignedByte() - 0x20);
            } else {
                result.writeByte(b);
            }
        }

        return result;
    }

    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;
    }/*www.ja  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);/* w  ww  . j a  v  a  2s .  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.RetranslatorProtocolDecoder.java

License:Apache License

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

    if (channel != null) {
        channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(new byte[] { 0x11 }), remoteAddress));
    }//from ww  w .  ja va  2  s . co  m

    ByteBuf buf = (ByteBuf) msg;

    buf.readUnsignedInt(); // length

    int idLength = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0x00) - buf.readerIndex();
    String id = buf.readBytes(idLength).toString(StandardCharsets.US_ASCII);
    buf.readByte();
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
    if (deviceSession == null) {
        return null;
    }

    Position position = new Position(getProtocolName());
    position.setDeviceId(deviceSession.getDeviceId());
    position.setTime(new Date(buf.readUnsignedInt() * 1000));

    buf.readUnsignedInt(); // bit flags

    while (buf.isReadable()) {

        buf.readUnsignedShort(); // block type
        int blockEnd = buf.readInt() + buf.readerIndex();
        buf.readUnsignedByte(); // security attribute
        int dataType = buf.readUnsignedByte();

        int nameLength = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0x00) - buf.readerIndex();
        String name = buf.readBytes(nameLength).toString(StandardCharsets.US_ASCII);
        buf.readByte();

        if (name.equals("posinfo")) {
            position.setValid(true);
            position.setLongitude(buf.readDoubleLE());
            position.setLatitude(buf.readDoubleLE());
            position.setAltitude(buf.readDoubleLE());
            position.setSpeed(buf.readShort());
            position.setCourse(buf.readShort());
            position.set(Position.KEY_SATELLITES, buf.readByte());
        } else {
            switch (dataType) {
            case 1:
                int len = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0x00) - buf.readerIndex();
                position.set(name, buf.readBytes(len).toString(StandardCharsets.US_ASCII));
                buf.readByte();
                break;
            case 3:
                position.set(name, buf.readInt());
                break;
            case 4:
                position.set(name, buf.readDoubleLE());
                break;
            case 5:
                position.set(name, buf.readLong());
                break;
            default:
                break;
            }
        }

        buf.readerIndex(blockEnd);

    }

    if (position.getLatitude() == 0 && position.getLongitude() == 0) {
        getLastLocation(position, position.getDeviceTime());
    }

    return position;
}

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  v a  2  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.SabertekFrameDecoder.java

License:Apache License

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

    int beginIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0x02);
    if (beginIndex >= 0) {
        int endIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0x03);
        if (endIndex >= 0) {
            buf.readerIndex(beginIndex + 1);
            ByteBuf frame = buf.readRetainedSlice(endIndex - beginIndex - 1);
            buf.readerIndex(endIndex + 1);
            buf.skipBytes(2); // end line
            return frame;
        }/*from   www.j  a v  a  2 s.c  o  m*/
    }

    return null;
}

From source file:org.traccar.protocol.SmokeyProtocolDecoder.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.readUnsignedByte(); // protocol version

    int type = buf.readUnsignedByte();

    ByteBuf id = buf.readSlice(8);/*from w w  w.  ja  va  2s. com*/
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, ByteBufUtil.hexDump(id));
    if (deviceSession == null) {
        return null;
    }

    if (type == MSG_DATE_RECORD) {

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

        position.set(Position.KEY_VERSION_FW, buf.readUnsignedShort());

        int status = buf.readUnsignedShort();
        position.set(Position.KEY_STATUS, status);

        DateBuilder dateBuilder = new DateBuilder().setDate(2000, 1, 1).addSeconds(buf.readUnsignedInt());

        getLastLocation(position, dateBuilder.getDate());

        int index = buf.readUnsignedByte();
        position.set(Position.KEY_INDEX, index);

        int report = buf.readUnsignedShort();

        buf.readUnsignedShort(); // length

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

        Network network = new Network();

        if (report != 0x0203) {

            int count = 1;
            if (report != 0x0200) {
                count = buf.readUnsignedByte();
            }

            for (int i = 0; i < count; i++) {
                int mcc = buf.readUnsignedShort();
                int mnc = buf.readUnsignedShort();
                int lac = buf.readUnsignedShort();
                int cid = buf.readUnsignedShort();
                if (i == 0) {
                    buf.readByte(); // timing advance
                }
                int rssi = buf.readByte();
                network.addCellTower(CellTower.from(mcc, mnc, lac, cid, rssi));
            }

        }

        if (report == 0x0202 || report == 0x0203) {

            int count = buf.readUnsignedByte();

            for (int i = 0; i < count; i++) {
                buf.readerIndex(buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0) + 1); // ssid

                String mac = String.format("%02x:%02x:%02x:%02x:%02x:%02x", buf.readUnsignedByte(),
                        buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte(),
                        buf.readUnsignedByte(), buf.readUnsignedByte());

                network.addWifiAccessPoint(WifiAccessPoint.from(mac, buf.readByte()));
            }

        }

        position.setNetwork(network);

        sendResponse(channel, remoteAddress, id, index, report);

        return position;

    }

    return null;
}