Example usage for io.netty.buffer ByteBuf readByte

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:dorkbox.util.bytes.OptimizeUtilsByteBuf.java

License:Apache License

/**
 * FROM KRYO/*from  www.j  a  va  2 s .  c  o m*/
 * <p>
 * look at buffer, and see if we can read the length of the long off of it (from the reader index).
 *
 * @return 0 if we could not read anything, >0 for the number of bytes for the long on the buffer
 */
public static int canReadLong(ByteBuf buffer) {
    int position = buffer.readerIndex();
    try {
        int remaining = buffer.readableBytes();
        for (int offset = 0, count = 1; offset < 64 && remaining > 0; offset += 7, remaining--, count++) {
            int b = buffer.readByte();
            if ((b & 0x80) == 0) {
                return count;
            }
        }
        return 0;
    } finally {
        buffer.readerIndex(position);
    }
}

---

From source file:eu.jangos.realm.network.decoder.RealmPacketDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    logger.debug("Packet received: " + in.readableBytes());

    // We should at least get the header.
    if (in.readableBytes() < HEADER_LENGTH) {
        logger.debug("Packet received but less than header size.");
        return;//from w w  w. j av a2  s  .  co m
    }

    ByteBuf msg = in.order(ByteOrder.LITTLE_ENDIAN);

    // We should decrypt the header only once per packet.
    if (opcode == 0) {
        byte[] header = new byte[HEADER_LENGTH];
        int readBytes = (ctx.channel().attr(AUTH).get() == AuthStep.STEP_AUTHED ? HEADER_LENGTH : 4);

        for (int i = 0; i < readBytes; i++) {
            header[i] = msg.readByte();
        }

        header = ctx.channel().attr(CRYPT).get().decrypt(header);

        size = (short) ((header[0] << 8 | header[1]) & 0xFF);
        opcode = (short) ((header[3] << 8 | header[2] & 0xFF));

        logger.debug("Opcode received: " + opcode + ", with size: " + size + " (readable bytes: "
                + in.readableBytes() + ") ");
    }

    if ((in.readableBytes() + 4) < size) {
        logger.debug(
                "Packet size is higher than the available bytes. (" + in.readableBytes() + ", " + size + ")");
        return;
    }

    final Opcodes code = Opcodes.convert(opcode);

    if (code == null) {
        return;
    }

    AbstractRealmClientPacket packet = null;

    switch (code) {
    case CMSG_PING:
        packet = new CMSG_PING(code, size);
        break;
    case CMSG_AUTH_SESSION:
        packet = new CMSG_AUTH_SESSION(code, (short) 0);
        break;
    case CMSG_CHAR_ENUM:
        packet = new CMSG_CHAR_ENUM(code, size);
        break;
    case CMSG_CHAR_CREATE:
        packet = new CMSG_CHAR_CREATE(code, size);
        break;
    case CMSG_CHAR_DELETE:
        packet = new CMSG_CHAR_DELETE(code, size);
        break;
    case CMSG_PLAYER_LOGIN:
        packet = new CMSG_PLAYER_LOGIN(code, size);
        break;
    default:
        logger.debug("Context: " + ctx.name() + "Packet received, opcode not supported: " + code);
        msg.clear();
        ctx.close();
        break;
    }

    if (packet != null) {
        try {
            logger.debug("Context: " + ctx.name() + "Packet received, opcode: " + code);
            logger.debug("Packet content: \n"
                    + StringUtils.toPacketString(ByteBufUtil.hexDump(msg).toUpperCase(), size, code));
            packet.decode(msg);
            opcode = 0;
            size = 0;
        } catch (Exception e) {
            return;
        }
        out.add(packet);
        msg.clear();
    }
}

---

From source file:eu.jangos.realm.network.packet.client.auth.CMSG_AUTH_SESSION.java

License:Apache License

@Override
public void decode(ByteBuf buf) throws Exception {
    if (buf.readableBytes() < this.size) {
        throw new Exception();
    }//ww w.j a  va  2 s  .  c  o m

    buf.readShort();
    this.build = buf.readInt();
    this.unknown = buf.readInt();

    StringBuilder b = new StringBuilder();

    byte c;

    while ((c = buf.readByte()) != 0) {
        b.append((char) c);
    }

    this.account = b.toString();
    this.seed = buf.readBytes(4).array();
    this.digest = buf.readBytes(20).array();

    int sizeAddons = buf.readInt();

    byte[] compressedAddons = buf.readBytes(buf.readableBytes()).array();

    Inflater decompressor = new Inflater();
    decompressor.setInput(compressedAddons);

    ByteArrayOutputStream bos = new ByteArrayOutputStream(compressedAddons.length);

    final byte[] buffer = new byte[1024];
    while (!decompressor.finished()) {
        try {
            final int count = decompressor.inflate(buffer);
            bos.write(buffer, 0, count);
        } catch (final DataFormatException e) {
        }
    }
    try {
        bos.close();
    } catch (final IOException e) {
    }

    final byte[] decompressedAddons = bos.toByteArray();

    if (sizeAddons != decompressedAddons.length) {
        System.out.println("Something went wrong");
        return;
    }

    ByteBuf addonBuffer = Unpooled.wrappedBuffer(decompressedAddons).order(ByteOrder.LITTLE_ENDIAN);

    this.listAddon = new ArrayList<>();

    while (addonBuffer.isReadable()) {
        String name;
        byte unk6;
        int crc, unk7;

        b = new StringBuilder();
        while ((c = addonBuffer.readByte()) != 0) {
            b.append((char) c);
        }

        name = b.toString();

        crc = addonBuffer.readInt();
        unk7 = addonBuffer.readInt();
        unk6 = addonBuffer.readByte();

        AddonInfo info = new AddonInfo(name, unk6, crc, unk7);
        this.listAddon.add(info);
    }

}

---

From source file:eu.jangos.realm.network.packet.client.character.CMSG_CHAR_CREATE.java

License:Apache License

@Override
public void decode(ByteBuf buf) throws Exception {
    if ((buf.readableBytes() + 4) < this.size) {
        throw new Exception();
    }/*from   ww  w .  j  ava 2s  . c  o m*/

    StringBuilder b = new StringBuilder();
    byte c;
    while ((c = buf.readByte()) != 0) {
        b.append((char) c);
    }

    this.name = b.toString();
    this.race = buf.readByte();
    this.charClass = buf.readByte();
    this.gender = buf.readByte();
    this.skin = buf.readByte();
    this.face = buf.readByte();
    this.hairStyle = buf.readByte();
    this.hairColor = buf.readByte();
    this.facialHair = buf.readByte();
}

---

From source file:eu.jangos.realm.network.packet.client.query.CMSG_WHO.java

License:Apache License

@Override
public void decode(ByteBuf buf) throws Exception {
    if ((buf.readableBytes() + 4) < this.size) {
        throw new Exception();
    }/*from   w  w  w  . j a  va2 s.c o m*/

    this.levelMin = buf.readInt();
    this.levelMax = buf.readInt();
    this.raceMask = buf.readInt();
    this.classMask = buf.readInt();
    this.zonesCount = buf.readInt();

    for (int i = 0; i < this.zonesCount; i++) {
        this.listZones.add(buf.readInt());
    }

    this.strCount = buf.readInt();

    StringBuilder b;
    byte c;
    for (int i = 0; i < this.strCount; i++) {
        b = new StringBuilder();
        while ((c = buf.readByte()) != 0) {
            b.append((char) c);
        }

        this.listStrings.add(b.toString());
    }

}

---

From source file:eu.jangos.realm.network.packet.client.query.CMSG_WHOIS.java

License:Apache License

@Override
public void decode(ByteBuf buf) throws Exception {
    if ((buf.readableBytes() + 4) < this.size) {
        throw new Exception();
    }/* w w w  . j  a v  a2s .c  om*/

    StringBuilder b = new StringBuilder();
    byte c;
    while ((c = buf.readByte()) != 0) {
        b.append((char) c);
    }

    this.name = b.toString();
}

---

From source file:eu.matejkormuth.rpgdavid.starving.remote.netty.packets.HandshakePacket.java

License:Open Source License

@Override
public void readFrom(ByteBuf fromBuffer) {
    byte[] nickname = new byte[fromBuffer.readByte()];
    fromBuffer.readBytes(nickname);//from   w  ww  . j av a  2  s .  c o m
    byte[] accesskey = new byte[fromBuffer.readByte()];
    fromBuffer.readBytes(accesskey);
    this.nickname = new String(nickname, PROTOCOL_ENCODING);
    this.accesskey = new String(accesskey, PROTOCOL_ENCODING);
}

---

From source file:eu.matejkormuth.rpgdavid.starving.remote.netty.packets.WGFiltersPacket.java

License:Open Source License

@Override
public void readFrom(ByteBuf fromBuffer) {
    byte filterCount = fromBuffer.readByte();
    FilterRepresentation[] filters = new FilterRepresentation[filterCount];
    for (int i = 0; i < filterCount; i++) {
        filters[i] = new FilterRepresentation();
        byte nameLength = fromBuffer.readByte();
        byte[] nameBuffer = new byte[nameLength];
        fromBuffer.readBytes(nameBuffer);
        filters[i].name = new String(nameBuffer, PROTOCOL_ENCODING);
        byte propertiesCount = fromBuffer.readByte();
        filters[i].properties = new FilterPropertyRepresentaion[propertiesCount];
        for (int p = 0; p < propertiesCount; p++) {
            byte propertyNameLength = fromBuffer.readByte();
            byte[] propertyNameBuffer = new byte[propertyNameLength];
            fromBuffer.readBytes(propertyNameBuffer);
            filters[i].properties[p] = new FilterPropertyRepresentaion();
            filters[i].properties[p].name = new String(propertyNameBuffer, PROTOCOL_ENCODING);
            filters[i].properties[p].type = fromBuffer.readByte();
        }/*from w  ww  . j  a  v  a  2  s.  c  o  m*/
    }
}

---

From source file:eu.xworlds.util.raknet.protocol.OpenConnectionRequest1.java

License:Open Source License

@Override
protected void parseMessage(ByteBuf buf) {
    this.magic = new byte[MAGIC_BYTES];
    buf.readBytes(this.magic);
    this.procotolVersion = buf.readByte();
    this.mtuPayload = buf.readBytes(buf.readableBytes()).array();
}

---

From source file:eu.xworlds.util.raknet.protocol.RemoteSystemRequiresPublicKey.java

License:Open Source License

@Override
protected void parseMessage(ByteBuf buf) {
    this.error = ErrorType.values()[buf.readByte()];
}

---

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