Example usage for io.netty.buffer ByteBuf readShort

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

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Introduction

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

Prototype

public abstract short readShort();

Source Link

Document

Gets a 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.

Usage

From source file:org.eclipse.neoscada.protocol.iec60870.asdu.types.TypeHelper.java

License:Open Source License

/**
 * Parse Short integer number with quality descriptor
 *//*  w w  w . j ava  2 s .  c  o m*/
public static Value<Short> parseScaledValue(final ProtocolOptions options, final ByteBuf data,
        final boolean withTimestamp) {
    final short value = data.readShort();

    final byte qds = data.readByte();

    final QualityInformation qualityInformation = QualityInformation.parse(qds);
    final boolean overflow = (qds & 0b00000001) > 0;

    final long timestamp = withTimestamp ? parseTimestamp(options, data) : System.currentTimeMillis();

    return new Value<Short>(value, timestamp, qualityInformation, overflow);
}

From source file:org.eclipse.neoscada.protocol.iec60870.asdu.types.TypeHelper.java

License:Open Source License

/**
 * Parse Double as normalized value with quality descriptor
 *///from   www.  j  av  a  2 s  .  co  m
public static Value<Double> parseNormalizedValue(final ProtocolOptions options, final ByteBuf data,
        final boolean withTimestamp) {
    final short value = data.readShort();

    final byte qds = data.readByte();

    final QualityInformation qualityInformation = QualityInformation.parse(qds);
    final boolean overflow = (qds & 0b00000001) > 0;

    final long timestamp = withTimestamp ? parseTimestamp(options, data) : System.currentTimeMillis();

    return new Value<Double>((double) (value / 32768.0), timestamp, qualityInformation, overflow);
}

From source file:org.evilco.mc.defense.common.network.DefenseStationRegisterUserPacket.java

License:Apache License

/**
 * Constructs a new DefenseStationRegisterUserPacket from a serialized packet buffer.
 * @param buffer The packet buffer./*from  www  .ja  va  2s.  c o m*/
 */
public DefenseStationRegisterUserPacket(ByteBuf buffer) {
    super(buffer);

    // read coordinates
    this.xCoord = buffer.readInt();
    this.yCoord = buffer.readInt();
    this.zCoord = buffer.readInt();

    // read mode
    this.blacklist = buffer.readBoolean();

    // read length
    int length = buffer.readShort();

    // create buffer
    byte[] usernameRaw = new byte[length];

    // read buffer
    buffer.readBytes(usernameRaw);

    // convert string
    this.username = new String(usernameRaw, Charsets.UTF_8);
}

From source file:org.evilco.mc.defense.common.network.DefenseStationUnregisterPacket.java

License:Apache License

/**
 * Constructs a new DefenseStationUnregisterPacket.
 * @param buffer The packet buffer./*w ww . j  av a 2s  . c o m*/
 */
public DefenseStationUnregisterPacket(ByteBuf buffer) {
    super(buffer);

    this.xCoord = buffer.readInt();
    this.yCoord = buffer.readInt();
    this.zCoord = buffer.readInt();

    // read length
    int length = buffer.readShort();

    // create buffer
    byte[] buf = new byte[length];

    // read data
    buffer.readBytes(buf);

    // construct UUID
    this.userID = UUID.fromString(new String(buf, Charsets.UTF_8));
}

From source file:org.hawkular.metrics.clients.ptrans.collectd.packet.CollectdPacketDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext context, DatagramPacket packet, List<Object> out) throws Exception {
    long start = System.currentTimeMillis();
    ByteBuf content = packet.content();
    List<Part> parts = new ArrayList<>(100);
    for (;;) {//from  w ww.j  a  v a  2  s . c o  m
        if (!hasReadableBytes(content, 4)) {
            break;
        }
        short partTypeId = content.readShort();
        PartType partType = PartType.findById(partTypeId);
        int partLength = content.readUnsignedShort();
        int valueLength = partLength - 4;
        if (!hasReadableBytes(content, valueLength)) {
            break;
        }
        if (partType == null) {
            content.skipBytes(valueLength);
            continue;
        }
        Part part;
        switch (partType) {
        case HOST:
        case PLUGIN:
        case PLUGIN_INSTANCE:
        case TYPE:
        case INSTANCE:
            part = new StringPart(partType, readStringPartContent(content, valueLength));
            break;
        case TIME:
        case TIME_HIGH_RESOLUTION:
        case INTERVAL:
        case INTERVAL_HIGH_RESOLUTION:
            part = new NumericPart(partType, readNumericPartContent(content));
            break;
        case VALUES:
            part = new ValuePart(partType, readValuePartContent(content, valueLength));
            break;
        default:
            part = null;
            content.skipBytes(valueLength);
        }
        //noinspection ConstantConditions
        if (part != null) {
            logger.trace("Decoded part: {}", part);
            parts.add(part);
        }
    }

    if (logger.isTraceEnabled()) {
        long stop = System.currentTimeMillis();
        logger.trace("Decoded datagram in {} ms", stop - start);
    }

    if (parts.size() > 0) {
        CollectdPacket collectdPacket = new CollectdPacket(parts);
        out.add(collectdPacket);
    } else {
        logger.debug("No parts decoded, no CollectdPacket output");
    }
}

From source file:org.jfxvnc.net.rfb.codec.decoder.rect.CopyRectDecoder.java

License:Apache License

@Override
public boolean decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {

    if (!in.isReadable(4)) {
        return false;
    }/*from  w w  w  .ja  va  2s.com*/
    int sryX = in.readShort();
    int srcY = in.readShort();

    out.add(new CopyImageRect(rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight(), sryX, srcY));
    return true;
}

From source file:org.jupiter.transport.netty.handler.ProtocolDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    switch (state()) {
    case HEADER_MAGIC:
        checkMagic(in.readShort()); // MAGIC
        checkpoint(State.HEADER_SIGN);
    case HEADER_SIGN:
        header.sign(in.readByte()); // ??
        checkpoint(State.HEADER_STATUS);
    case HEADER_STATUS:
        header.status(in.readByte()); // ??
        checkpoint(State.HEADER_ID);
    case HEADER_ID:
        header.id(in.readLong()); // ?id
        checkpoint(State.HEADER_BODY_LENGTH);
    case HEADER_BODY_LENGTH:
        header.bodyLength(in.readInt()); // ?
        checkpoint(State.BODY);/*from w  w w.j a v a2  s.c  o m*/
    case BODY:
        switch (header.messageCode()) {
        case JProtocolHeader.HEARTBEAT:
            break;
        case JProtocolHeader.REQUEST: {
            int length = checkBodyLength(header.bodyLength());
            byte[] bytes = new byte[length];
            in.readBytes(bytes);

            JRequestBytes request = new JRequestBytes(header.id());
            request.timestamp(SystemClock.millisClock().now());
            request.bytes(header.serializerCode(), bytes);

            out.add(request);

            break;
        }
        case JProtocolHeader.RESPONSE: {
            int length = checkBodyLength(header.bodyLength());
            byte[] bytes = new byte[length];
            in.readBytes(bytes);

            JResponseBytes response = new JResponseBytes(header.id());
            response.status(header.status());
            response.bytes(header.serializerCode(), bytes);

            out.add(response);

            break;
        }
        default:
            throw IoSignals.ILLEGAL_SIGN;
        }
        checkpoint(State.HEADER_MAGIC);
    }
}

From source file:org.lanternpowered.pingy.PingyHandler.java

License:MIT License

private void handleHandshake(ChannelHandlerContext ctx, ByteBuf msg) {
    if (this.state != ProtocolState.HANDSHAKE) {
        ctx.channel().close();/*from  w w  w .  j a v a 2 s . c  o m*/
        throw new DecoderException("Received unexpected handshake message");
    }
    this.protocolVersion = readVarInt(msg); // Protocol version
    readByteArray(msg, 255 * 4); // Hostname
    msg.readShort(); // Port

    final ProtocolState state = ProtocolState.fromId(readVarInt(msg)); // Protocol state
    switch (state) {
    case HANDSHAKE:
    case PLAY:
        ctx.channel().close();
        throw new DecoderException("Received unexpected handshake message");
    case LOGIN:
        sendMessage(ctx, 0x00, buf -> writeByteArray(buf,
                GSON.toJson(fixJson(this.properties.getDisconnectMessage())).getBytes(StandardCharsets.UTF_8)))
                        .addListener(ChannelFutureListener.CLOSE);
        return;
    case STATUS:
        this.state = state;
        return;
    default:
        throw new IllegalStateException("Unsupported protocol state: " + state);
    }
}

From source file:org.lanternpowered.pingy.PingyLegacyHandler.java

License:MIT License

private boolean tryHandleLegacyPing(ChannelHandlerContext ctx, ByteBuf msg) {
    int readable = msg.readableBytes();

    // Full message, contains more info
    boolean full = false;

    if (readable > 0) {
        // Is always 1
        if (msg.readUnsignedByte() != 1) {
            return false;
        }//from   w  w w  .  j a  va  2s  . c  o m
        full = true;
    }

    if (readable > 1) {
        if (msg.readUnsignedByte() != 0xfa) {
            return false;
        }
        byte[] bytes = new byte[msg.readShort() << 1];
        msg.readBytes(bytes);
        if (!new String(bytes, StandardCharsets.UTF_16BE).equals("MC|PingHost")) {
            return false;
        }
    }

    final String motd = getFirstLine(this.properties.getLegacyMessageOfTheDay());
    if (full) {
        sendLegacyDisconnectMessage(ctx, String.format("\u00A7%s\0%s\0%s\0%s\0%s\0%s", 1, 127,
                this.properties.getOutdatedMessage(), motd, -1, -1));
    } else {
        sendLegacyDisconnectMessage(ctx, String.format("%s\u00A7%s\u00A7%s", motd, -1, -1));
    }

    return true;
}

From source file:org.lanternpowered.pingy.PingyLegacyHandler.java

License:MIT License

private boolean tryHandleLegacyJoin(ChannelHandlerContext ctx, ByteBuf msg) {
    msg.readByte(); // Protocol version
    int value = msg.readShort();
    // Check the length
    if (value < 0 || value > 16) {
        return false;
    }/*ww w.ja  v a  2 s.  com*/
    msg.readBytes(value << 1); // Username
    value = msg.readShort();
    // Check the length
    if (value < 0 || value > 255) {
        return false;
    }
    msg.readBytes(value << 1); // Host address
    msg.readInt(); // Port
    if (msg.readableBytes() > 0) {
        return false;
    }
    sendLegacyDisconnectMessage(ctx, this.properties.getLegacyDisconnectMessage());
    return true;
}