Example usage for io.netty.buffer ByteBuf readByte

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

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Introduction

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

Prototype

public abstract byte readByte();

Source Link

Document

Gets a byte at the current readerIndex and increases the readerIndex by 1 in this buffer.

Usage

From source file:com.whizzosoftware.foscam.camera.protocol.OrderDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> list) throws Exception {
    Byte b;/*  w  w  w .  java 2 s  . c  o m*/
    if (buf.isReadable()) {
        do {
            b = buf.readByte();
        } while (b != 'M' && buf.isReadable());

        if (buf.readableBytes() > 0) {
            logger.trace("Found possible start of order");
            b = buf.readByte();
            if (b == 'O' && buf.isReadable()) {
                b = buf.readByte();
                if (b == '_' && buf.isReadable()) {
                    b = buf.readByte();
                    if (b == 'I' && buf.isReadable()) {
                        Integer operationCode = popINT16(buf);
                        if (operationCode != null) {
                            if (popBytes(buf, 9)) {
                                Integer length = popINT32(buf);
                                if (length != null && popBytes(buf, 4)) {
                                    if (buf.readableBytes() >= length) {
                                        byte[] text = new byte[length];
                                        buf.readBytes(text);
                                        switch (operationCode) {
                                        case 1:
                                            try {
                                                list.add(new SearchResponse(text, 0, length));
                                            } catch (UnknownHostException e) {
                                                logger.error("Error processing search response", e);
                                            }
                                            break;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

From source file:com.whizzosoftware.foscam.camera.protocol.OrderDecoder.java

License:Open Source License

/**
 * Pops four bytes from the buffer and returns them as a little-endian integer.
 *
 * @param buf the buffer to read/* ww  w  . j av  a 2  s .com*/
 *
 * @return an Integer (or null if there aren't at least four bytes available in the buffer)
 */
private Integer popINT32(ByteBuf buf) {
    if (buf.readableBytes() >= 4) {
        byte b[] = new byte[4];
        b[0] = buf.readByte();
        b[1] = buf.readByte();
        b[2] = buf.readByte();
        b[3] = buf.readByte();
        return java.nio.ByteBuffer.wrap(b).order(java.nio.ByteOrder.LITTLE_ENDIAN).getInt();
    } else {
        return null;
    }
}

From source file:com.whizzosoftware.hobson.davisvantage.api.codec.VantageSerialFrameDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf buffer, List<Object> list)
        throws Exception {
    int ix = buffer.readerIndex();
    int readableBytes = buffer.readableBytes();
    logger.trace("Readable bytes remaining to read: {}", readableBytes);
    if (readableBytes > 0) {
        if (buffer.readableBytes() >= 6 && buffer.getByte(ix) == 'T' && buffer.getByte(ix + 1) == 'E'
                && buffer.getByte(ix + 2) == 'S' && buffer.getByte(ix + 3) == 'T'
                && buffer.getByte(ix + 4) == '\n' && buffer.getByte(ix + 5) == '\r') {
            buffer.readBytes(6);/*from  ww w . ja  v  a 2s  .c  o  m*/
            logger.trace("Got TEST");
            list.add(new Test());
        } else if (buffer.getByte(ix) == '\r' || buffer.getByte(ix) == '\n') {
            logger.trace("Discarding whitespace: {}", (int) buffer.getByte(ix));
            buffer.readByte();
        } else if (buffer.getByte(ix) == 0x06) {
            buffer.readByte();
            list.add(new ACK());
        } else if (buffer.readableBytes() >= 4 && buffer.getByte(ix) == 'O' && buffer.getByte(ix + 1) == 'K'
                && buffer.getByte(ix + 2) == '\n' && buffer.getByte(ix + 3) == '\r') {
            logger.trace("Got OK");
            buffer.readBytes(4);
            list.add(new OK());
        } else if (buffer.getByte(ix) == 'L' && buffer.getByte(ix + 1) == 'O'
                && buffer.getByte(ix + 2) == 'O') {
            if (buffer.readableBytes() >= 99) {
                logger.trace("Got LOOP");
                byte[] bytes = new byte[99];
                buffer.readBytes(bytes, 0, 99);
                list.add(new LoopResponse(bytes));
            }
        } else if ((buffer.getByte(ix) == 'A' && buffer.getByte(ix + 1) == 'p' && buffer.getByte(ix + 2) == 'r')
                || (buffer.getByte(ix) == 'A' && buffer.getByte(ix + 1) == 'u' && buffer.getByte(ix + 2) == 'g')
                || (buffer.getByte(ix) == 'D' && buffer.getByte(ix + 1) == 'e' && buffer.getByte(ix + 2) == 'c')
                || (buffer.getByte(ix) == 'F' && buffer.getByte(ix + 1) == 'e' && buffer.getByte(ix + 2) == 'b')
                || (buffer.getByte(ix) == 'J' && buffer.getByte(ix + 1) == 'a' && buffer.getByte(ix + 2) == 'n')
                || (buffer.getByte(ix) == 'J' && buffer.getByte(ix + 1) == 'u' && buffer.getByte(ix + 2) == 'l')
                || (buffer.getByte(ix) == 'J' && buffer.getByte(ix + 1) == 'u' && buffer.getByte(ix + 2) == 'n')
                || (buffer.getByte(ix) == 'M' && buffer.getByte(ix + 1) == 'a' && buffer.getByte(ix + 2) == 'r')
                || (buffer.getByte(ix) == 'M' && buffer.getByte(ix + 1) == 'a' && buffer.getByte(ix + 2) == 'y')
                || (buffer.getByte(ix) == 'N' && buffer.getByte(ix + 1) == 'o' && buffer.getByte(ix + 2) == 'v')
                || (buffer.getByte(ix) == 'O' && buffer.getByte(ix + 1) == 'c' && buffer.getByte(ix + 2) == 't')
                || (buffer.getByte(ix) == 'D' && buffer.getByte(ix + 1) == 'e'
                        && buffer.getByte(ix + 2) == 'c')) {
            if (buffer.readableBytes() >= 13) {
                byte[] bytes = new byte[13];
                buffer.readBytes(bytes, 0, 13);
                list.add(new VersionResponse(new String(bytes, 0, 11)));
            }
        } else {
            byte b = buffer.readByte();
            logger.trace("Discarding unknown byte: {}", Hex.encodeHexString(new byte[] { b }));
        }
    }
}

From source file:com.whizzosoftware.hobson.lifx.api.codec.LIFXFrameDecoder.java

License:Open Source License

protected Object readDeviceStateService(InetSocketAddress sender, ByteBuf buf) {
    return new DeviceStateService(sender, readHeader(buf), buf.readByte(), read32BitLE(buf));
}

From source file:com.whizzosoftware.hobson.lifx.api.codec.LIFXFrameDecoder.java

License:Open Source License

protected MessageHeader readHeader(ByteBuf buf) {
    // read message length
    int length = read16BitLE(buf);
    // read origin/tagged/addressable/protocol
    buf.readByte();
    buf.readByte();/*from   w  w  w. ja  va 2  s .c o m*/
    // read source
    int source = read32BitLE(buf);
    // read target
    long target = read64BitLE(buf);
    // read reserved
    buf.readByte();
    buf.readByte();
    buf.readByte();
    buf.readByte();
    buf.readByte();
    buf.readByte();
    // read ack_required/res_required
    buf.readByte();
    // read sequence
    byte sequence = buf.readByte();
    // read reserved
    buf.readByte();
    buf.readByte();
    buf.readByte();
    buf.readByte();
    buf.readByte();
    buf.readByte();
    buf.readByte();
    buf.readByte();
    // read type
    int type = read16BitLE(buf);
    // read reserved
    buf.readByte();
    buf.readByte();

    // TODO: set correct booleans
    return new MessageHeader(length, false, false, source, target, true, true, sequence, type);
}

From source file:com.whizzosoftware.hobson.lifx.api.codec.LIFXFrameDecoder.java

License:Open Source License

protected int read16BitLE(ByteBuf buf) {
    return ((buf.readByte() & 0xFF) + ((buf.readByte() << 8)) & 0xFFFF);
}

From source file:com.whizzosoftware.hobson.lifx.api.codec.LIFXFrameDecoder.java

License:Open Source License

protected int read32BitLE(ByteBuf buf) {
    return (buf.readByte() + (buf.readByte() >> 8) + (buf.readByte() >> 16) + (buf.readByte() >> 24));
}

From source file:com.whizzosoftware.hobson.lifx.api.codec.LIFXFrameDecoder.java

License:Open Source License

protected long read64BitLE(ByteBuf buf) {
    return (buf.readByte() + (buf.readByte() >> 8) + (buf.readByte() >> 16) + (buf.readByte() >> 24)
            + (buf.readByte() >> 32) + (buf.readByte() >> 40) + (buf.readByte() >> 48)
            + (buf.readByte() >> 56));
}

From source file:com.whizzosoftware.hobson.lifx.api.codec.LIFXFrameDecoder.java

License:Open Source License

protected String readString(ByteBuf buf, int len) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < len; i++) {
        byte b = buf.readByte();
        if (b > 0) {
            sb.append((char) b);
        }/*w w  w  .j  av  a2s .c o m*/
    }
    return sb.toString();
}

From source file:com.whizzosoftware.hobson.radiora.api.codec.RadioRaFrameDecoder.java

License:Open Source License

@Override
protected Object decode(ChannelHandlerContext ctx, ByteBuf buffer) throws Exception {
    logger.trace("decode: {}", buffer.toString(CharsetUtil.UTF_8));

    ByteBuf frame = (ByteBuf) super.decode(ctx, buffer);

    if (frame != null) {
        // if we receive a single byte frame, it should be a '!'
        if (frame.readableBytes() == 1) {
            byte b = frame.readByte();
            if (b == '!') {
                return null;
            } else {
                throw new CorruptedFrameException("Unexpected single byte frame");
            }//  ww  w .j  a v a 2  s  .  c  o m
            // otherwise, we assume it's a command frame
        } else {
            int ix = frame.indexOf(frame.readerIndex(), frame.writerIndex(), (byte) ',');
            if (ix > 0) {
                String cmdName = frame.slice(0, ix).toString(CharsetUtil.UTF_8);

                switch (cmdName) {
                case ZoneMap.TYPE:
                    if (frame.readableBytes() >= ix + 33) {
                        return new ZoneMap(frame.slice(ix + 1, 32).toString(CharsetUtil.UTF_8));
                    } else {
                        throw new CorruptedFrameException("Received invalid zone map size");
                    }

                case LocalZoneChange.TYPE:
                    if (frame.readableBytes() >= ix + 3) {
                        String sZoneNum = frame.slice(ix + 1, 2).toString(CharsetUtil.UTF_8);
                        if (frame.readableBytes() >= ix + 7) {
                            String state = frame.slice(ix + 4, 3).toString(CharsetUtil.UTF_8).trim();
                            try {
                                return new LocalZoneChange(Integer.parseInt(sZoneNum),
                                        LocalZoneChange.State.valueOf(state));
                            } catch (IllegalArgumentException iae) {
                                throw new CorruptedFrameException("Invalid LZC state string");
                            }
                        } else {
                            throw new CorruptedFrameException("Invalid LZC size (state)");
                        }
                    } else {
                        throw new CorruptedFrameException("Invalid LZC size (zoneNum)");
                    }

                case LEDMap.TYPE:
                    if (frame.readableBytes() >= ix + 16) {
                        return new LEDMap(frame.slice(ix + 1, 15).toString(CharsetUtil.UTF_8));
                    } else {
                        throw new CorruptedFrameException("Invalid LED map size");
                    }

                default:
                    throw new DecoderException("Unrecognized command: " + cmdName);
                }
            } else {
                throw new CorruptedFrameException("Invalid frame format (no comma)");
            }
        }
    } else {
        return null;
    }
}