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:controlspy3.SpyAsServer.java

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    System.out.println("\nrecibio algo Servidor");
    ByteBuf in = (ByteBuf) msg;
    ArrayList in2 = new ArrayList();
    String messageServer = "";
    try {/* w w  w.  ja  v a2  s .c o m*/
        while (in.isReadable()) { // (1)
            byte rxByte = in.readByte();
            in2.add(rxByte);
        }
        ux1 = new UnixTime1(in2);
        System.out.println("A");
        SpyAsServer.channelSend();

        messageServer = "";
        for (int i = 0; i < in2.size(); i++) {
            byte rxByte = (byte) in2.get(i);
            messageServer += String.valueOf(Character.toChars(rxByte));
        }

    } catch (Exception e) {
        System.out.println("Entro al ERROR RARO");
    } finally {
        in.release(); // (2)
    }
}

From source file:cyril.server.io.AuthHandler.java

License:Open Source License

@Override
public void inboundBufferUpdated(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
    if (!timeState.compareAndSet(0, DATA_MASK)) {
        // Other thread is reading (?!) or timeout has been reached in the
        // past.//from   www .  j av  a2s.co m
        return;
    }

    boolean goOn = true;
    while (goOn && in.readable() && ((timeState.get() & KILL_MASK) == 0)) {
        // The killmask is set when something goes wrong
        // That why we test for it with every cycle

        PaketPosition s = paketState;
        switch (s) {
        case START:
            goOn = handleIncomingStart(ctx, in);
            break;

        case CREATE_PENDING:
            // Client tried to send something while *we* were sending the
            // login data.
            // Client is trying to troll / spam us.
            readerAborts(ctx);
            goOn = false;
            break;

        case MUST_LOGIN:
            if (in.readByte() == '!') {
                paketState = PaketPosition.LOGIN;
            } else {
                readerAborts(ctx);
                goOn = false;
            }
            break;

        case LOGIN:
            // Awaiting the first two bytes
            if (in.readableBytes() < 2) {
                goOn = false;
            } else {
                int usernameLength = in.readShort();
                goOn = auth.isValidUsernameLength(wrapped, usernameLength);
                if (goOn) {
                    username = new byte[usernameLength];
                    index = 0;
                }
            }
            break;

        case LOGIN_USER:
            goOn = handleIncomingUsername(ctx, in);
            break;

        case LOGIN_TOKEN_LENGTH:
            goOn = handleIncomingTokenLength(ctx, in);
            break;

        case LOGIN_TOKEN:
            goOn = handleIncomingToken(ctx, in);
            break;

        case DECLINED_WAIT:
            goOn = handleIncomingDeclined(ctx, in);
            break;

        case AUTHENTICATED:
        default:
            throw new InternalError("Dafuq: Illegal / Unknown" + " PaketPosition " + s);
        }
    }

    if (paketState == PaketPosition.AUTHENTICATED) {
        timeState.set(0);
        return;
    }

    int oldState;
    do {
        oldState = timeState.get();
    } while (!timeState.compareAndSet(oldState, oldState & ~DATA_MASK));
    if ((oldState | KILL_MASK) != 0) {
        // Don't care about anything when KILL_MASK is set.
        readerAborts(ctx, true);
        return;
    }
}

From source file:cyril.server.io.AuthHandler.java

License:Open Source License

/**
 * Handles the first incoming byte and returns whether further processing
 * may happen./*from w ww .ja va 2s  .c om*/
 * 
 * @param ctx
 *            The current context
 * @param in
 *            The buffer to read from (guaranteed to have at least one
 *            readable byte)
 * @return whether further processing may happen
 */
private boolean handleIncomingStart(ChannelHandlerContext ctx, ByteBuf in) {
    byte b = in.readByte();
    switch (b) {
    case '?':
        // Requesting a new account
        Login l = auth.createLogin(wrapped);
        if (l == null) {
            // Not allowed, at least not currently
            readerAborts(ctx, false);
        }
        paketState = PaketPosition.CREATE_PENDING;

        // Trigger transmission of token
        new LoginTransmission(ctx, l).start();

        return false;

    case '!':
        paketState = PaketPosition.LOGIN;
        return true;

    default: // Illegal paket at this stage
        readerAborts(ctx, false);
        return false;
    }

    // This should be dead code:
    // System.out.println();
}

From source file:cyril.server.io.AuthHandler.java

License:Open Source License

/**
 * Handles and compares the incoming token. Automatically switches to
 * "discard mode" to be more efficient without revealing the fact that a
 * wrong byte has been encountered.<br />
 * If the transmission of the token is complete (and both tokens match), the
 * login process is complete. The next handler is automatically called, and
 * this handler is dislodged from the channel.
 * //from   w ww  . j  a va2s .com
 * @param ctx
 *            The current context
 * @param in
 *            The buffer to read from (guaranteed to have at least one
 *            readable byte)
 * @return whether further processing may happen
 */
private boolean handleIncomingToken(ChannelHandlerContext ctx, ByteBuf in) {
    // This *does* work with 0 length tokens, but only if the next packet
    // starts right away.
    // This doesn't pose a security threat -- if you ever hand out 0 byte
    // tokens, there's no security anymore that could be threatened.

    int checkable = Math.min(login.token.length - index, in.readableBytes());
    for (; checkable > 0; checkable--) {
        if (login.token[index] != in.readByte()) {
            paketState = PaketPosition.DECLINED_WAIT;
            break;
        }
        index++;
    }

    if (index >= login.token.length) {
        // Token is correct!
        // Dispensing product
        killTask.cancel(false);
        paketState = PaketPosition.AUTHENTICATED;
        listener.stateChanged(ctx.channel(), ConnectionState.GOOD_AUTH);
        service.handleNewSession(ctx.channel(), login);
        ctx.pipeline().remove(this);
    }

    return false;
}

From source file:dan200.qcraft.shared.QCraftPacket.java

License:Open Source License

@Override
public void fromBytes(ByteBuf buffer) {
    packetType = buffer.readByte();
    byte nString = buffer.readByte();
    byte nInt = buffer.readByte();
    int nByte = buffer.readInt();
    if (nString == 0) {
        dataString = null;//from  ww w.  j  av  a  2 s. com
    } else {
        dataString = new String[nString];
        for (int k = 0; k < nString; k++) {
            if (buffer.readBoolean()) {
                int len = buffer.readInt();
                byte[] b = new byte[len];
                buffer.readBytes(b);
                try {
                    dataString[k] = new String(b, "UTF-8");
                } catch (UnsupportedEncodingException e) {
                    dataString[k] = null;
                }
            }
        }
    }
    if (nInt == 0) {
        dataInt = null;
    } else {
        dataInt = new int[nInt];
        for (int k = 0; k < nInt; k++) {
            dataInt[k] = buffer.readInt();
        }
    }
    if (nByte == 0) {
        dataByte = null;
    } else {
        dataByte = new byte[nByte][];
        for (int k = 0; k < nByte; k++) {
            int length = buffer.readInt();
            if (length > 0) {
                dataByte[k] = new byte[length];
                buffer.getBytes(buffer.readerIndex(), dataByte[k]);
            }
        }
    }
}

From source file:de.jackwhite20.cascade.shared.pipeline.handler.PacketDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf byteBuf, List<Object> out) throws Exception {

    int length = byteBuf.readInt();

    // Allow packets with no data
    if (length > 0) {
        byte id = byteBuf.readByte();

        try {//from ww  w.  j  a  va  2s . c  o m
            Packet packet = protocol.create(id);
            packet.read(byteBuf);

            out.add(packet);
        } catch (IllegalStateException e) {
            ctx.fireExceptionCaught(e);
        }
    }
}

From source file:de.jackwhite20.comix.network.Protocol.java

License:Open Source License

public static int readVarInt(ByteBuf input, int maxBytes) {
    int out = 0;/*from   ww w  . jav a2 s .  c  o  m*/
    int bytes = 0;
    byte in;
    while (true) {
        in = input.readByte();

        out |= (in & 0x7F) << (bytes++ * 7);

        if (bytes > maxBytes) {
            throw new RuntimeException("VarInt too big");
        }

        if ((in & 0x80) != 0x80) {
            break;
        }
    }

    return out;
}

From source file:de.jackwhite20.hftp.shared.packet.DeleteFileResultPacket.java

License:Open Source License

@Override
public void read(ByteBuf byteBuf) throws Exception {

    result = Result.values()[byteBuf.readByte()];
}

From source file:de.sanandrew.mods.turretmod.network.PacketInitAssemblyCrafting.java

License:Creative Commons License

@Override
public void fromBytes(ByteBuf buf) {
    this.pos = new BlockPos(buf.readInt(), buf.readInt(), buf.readInt());
    this.crfUUID = ByteBufUtils.readUTF8String(buf);
    this.count = buf.readByte();
}

From source file:de.sanandrew.mods.turretmod.network.PacketOpenGui.java

License:Creative Commons License

@Override
public void fromBytes(ByteBuf buf) {
    this.guiId = buf.readByte();
    this.x = buf.readInt();
    this.y = buf.readInt();
    this.z = buf.readInt();
}