Example usage for io.netty.channel ChannelHandlerContext alloc

List of usage examples for io.netty.channel ChannelHandlerContext alloc

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Introduction

In this page you can find the example usage for io.netty.channel ChannelHandlerContext alloc.

Prototype

ByteBufAllocator alloc();

Source Link

Document

Return the assigned ByteBufAllocator which will be used to allocate ByteBuf s.

Usage

From source file:com.vethrfolnir.login.network.mu.ClientChannelHandler.java

License:Open Source License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf buff = (ByteBuf) msg;//from   w  w  w. ja va2  s  .com

    switch (buff.getUnsignedByte(0)) {
    case 0xC1:
    case 0xC2:
    case 0xC3:
    case 0xC4:
        break;
    default:
        ctx.close();
        buff.release(); //TODO: maybe add a flood protector?
        log.warn("Client[" + ctx.channel() + "] is not a mu online client! Disconnecting!");
        return;
    }

    // we are not interested in the header and size;
    buff.readerIndex(2);

    int opcode = buff.readUnsignedShort();

    switch (opcode) {

    case 0xf4_03: { // Request Server information
        int serverId = buff.readUnsignedByte();
        ByteBuf buf = ctx.alloc().heapBuffer().order(ByteOrder.LITTLE_ENDIAN);

        WritePacket packet = SendServerInfo.StaticPacket;
        packet.write(null, buf, nameService, serverId);
        packet.markLength(buf);
        ;

        ctx.writeAndFlush(buf);
        break;
    }
    case 0xf4_06: { // Request Server list
        ByteBuf buf = ctx.alloc().heapBuffer().order(ByteOrder.LITTLE_ENDIAN);

        WritePacket packet = SendServerLists.StaticPacket;
        packet.write(null, buf, nameService);
        packet.markLength(buf);

        ctx.writeAndFlush(buf);
        break;
    }
    default:
        log.warn("Unkown packet[OPCODE = " + Integer.toHexString(opcode) + "] Dump: "
                + PrintData.printData(buff.nioBuffer(0, buff.writerIndex())));
        ctx.close();
        break;
    }
    buff.release();
}

From source file:com.xiovr.unibot.bot.network.impl.ConnectionEncoderImpl.java

License:Open Source License

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {

    if (!(msg instanceof Packet)) {
        ctx.write(msg, promise);//  w w  w.j a  v a  2  s  .  co  m
        return;
    }

    final Packet pck = (Packet) msg;
    //      System.out.println("Encoded packet pck.len=" + pck.getPosition());

    int size = pck.getPosition();

    ByteBuf encoded = ctx.alloc().heapBuffer(size);

    //      final byte[] encArr = encoded.array();
    final byte[] pckArr = pck.getBuf().array();

    encoded.writeBytes(pckArr, 0, size);

    //      System.arraycopy(pckArr, 0, encArr, encoded.writerIndex(),size); 

    //      encoded.writerIndex(encoded.writerIndex()+pck.getPosition());
    ctx.write(encoded, promise);
    PacketPool.free(pck);
}

From source file:com.xx_dev.apn.proxy.ApnProxyAESDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    switch (this.state()) {
    case READ_MAGIC_NUMBER: {
        int magicNumber = in.readInt();
        if (magicNumber != 0x34ed2b11) {
            throw new Exception("Wrong magic number!");
        }//  ww  w. ja va  2  s  .c  o  m
        this.checkpoint(STATE.READ_LENGTH);
    }
    case READ_LENGTH: {
        length = in.readInt();
        if (length > 1024 * 512 + 1000) {
            ctx.close();
        }
        this.checkpoint(STATE.READ_CONTENT);
    }
    case READ_CONTENT: {
        c1.init(Cipher.DECRYPT_MODE, securekey, iv);
        byte[] data = new byte[length];
        in.readBytes(data, 0, length);
        byte[] raw = c1.doFinal(data);
        ByteBuf outBuf = ctx.alloc().buffer();
        outBuf.writeBytes(raw);
        out.add(outBuf);
        this.checkpoint(STATE.READ_MAGIC_NUMBER);
        break;
    }
    default:
        throw new Error("Shouldn't reach here.");
    }

}

From source file:com.xx_dev.apn.socks.local.FakeHttpClientDecoder.java

License:Apache License

protected void _decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    switch (this.state()) {
    case READ_FAKE_HTTP: {
        int fakeHttpHeadStartIndex = in.readerIndex();

        int fakeHttpHeadEndIndex = in.forEachByte(new ByteBufProcessor() {
            int c = 0;

            @Override/*w w  w  . ja  va 2  s  .  c  o m*/
            public boolean process(byte value) throws Exception {

                if (value == '\r' || value == '\n') {
                    c++;
                } else {
                    c = 0;
                }

                //logger.info("value=" + value + ", c=" + c);

                if (c >= 4) {
                    return false;
                } else {
                    return true;
                }
            }
        });

        logger.debug("s: " + fakeHttpHeadStartIndex);
        logger.debug("e: " + fakeHttpHeadEndIndex);

        if (fakeHttpHeadEndIndex == -1) {
            logger.warn("w: " + fakeHttpHeadStartIndex);
            break;
        }

        byte[] buf = new byte[fakeHttpHeadEndIndex - fakeHttpHeadStartIndex + 1];
        in.readBytes(buf, 0, fakeHttpHeadEndIndex - fakeHttpHeadStartIndex + 1);
        String s = TextUtil.fromUTF8Bytes(buf);

        //logger.info(s);

        String[] ss = StringUtils.split(s, "\r\n");

        //System.out.println(s + "" + this + " " + Thread.currentThread().getName());

        for (String line : ss) {
            if (StringUtils.startsWith(line, "X-C:")) {
                String lenStr = StringUtils.trim(StringUtils.split(line, ":")[1]);
                //System.out.println(lenStr + "" + this + " " + Thread.currentThread().getName());
                //System.out.println("*****************************************");
                try {
                    length = Integer.parseInt(lenStr, 16);
                    trafficLogger.info("D," + LocalConfig.ins().getUser() + "," + length);
                } catch (Throwable t) {
                    logger.error("--------------------------------------");
                    logger.error(s + "" + this + " " + Thread.currentThread().getName());
                    logger.error("--------------------------------------");
                }

            }
        }

        this.checkpoint(STATE.READ_CONTENT);
    }
    case READ_CONTENT: {
        if (length > 0) {
            byte[] buf = new byte[length];
            in.readBytes(buf, 0, length);

            byte[] res = new byte[length];

            for (int i = 0; i < length; i++) {
                res[i] = (byte) (buf[i] ^ (LocalConfig.ins().getEncryptKey() & 0xFF));
            }

            ByteBuf outBuf = ctx.alloc().buffer();

            outBuf.writeBytes(res);

            out.add(outBuf);
        }

        this.checkpoint(STATE.READ_FAKE_HTTP);
        break;
    }
    default:
        throw new Error("Shouldn't reach here.");
    }

}

From source file:com.xx_dev.apn.socks.remote.FakeHttpServerDecoder.java

License:Apache License

protected void _decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    switch (this.state()) {
    case READ_FAKE_HTTP: {
        int fakeHttpHeadStartIndex = in.readerIndex();

        int fakeHttpHeadEndIndex = in.forEachByte(new ByteBufProcessor() {
            int c = 0;

            @Override//from w ww.  j  a  va  2 s  . c  om
            public boolean process(byte value) throws Exception {

                if (value == '\r' || value == '\n') {
                    c++;
                } else {
                    c = 0;
                }

                //logger.info("value=" + value + ", c=" + c);

                if (c >= 4) {
                    return false;
                } else {
                    return true;
                }
            }
        });

        logger.debug("s: " + fakeHttpHeadStartIndex);
        logger.debug("e: " + fakeHttpHeadEndIndex);

        if (fakeHttpHeadEndIndex == -1) {
            logger.warn("w: " + fakeHttpHeadStartIndex);
            break;
        }

        byte[] buf = new byte[fakeHttpHeadEndIndex - fakeHttpHeadStartIndex + 1];
        in.readBytes(buf, 0, fakeHttpHeadEndIndex - fakeHttpHeadStartIndex + 1);
        String s = TextUtil.fromUTF8Bytes(buf);

        //logger.info(s);

        String[] ss = StringUtils.split(s, "\r\n");

        //System.out.println(s + "" + this + " " + Thread.currentThread().getName());

        for (String line : ss) {
            if (StringUtils.startsWith(line, "X-C:")) {
                String lenStr = StringUtils.trim(StringUtils.split(line, ":")[1]);
                //System.out.println(lenStr + "" + this + " " + Thread.currentThread().getName());
                //System.out.println("*****************************************");
                try {
                    length = Integer.parseInt(lenStr, 16);
                } catch (Throwable t) {
                    logger.error("--------------------------------------");
                    logger.error(s + "" + this + " " + Thread.currentThread().getName());
                    logger.error("--------------------------------------");
                }

            }

            if (StringUtils.startsWith(line, "X-U:")) {
                String user = StringUtils.trim(StringUtils.split(line, ":")[1]);
                ctx.channel().attr(NettyAttributeKey.LINK_USER).set(user);
                logger.info(user);
            }
        }

        this.checkpoint(STATE.READ_CONTENT);
    }
    case READ_CONTENT: {

        trafficLogger.info("U," + ctx.channel().attr(NettyAttributeKey.LINK_USER).get() + "," + length);

        if (length > 0) {

            byte[] buf = new byte[length];
            in.readBytes(buf, 0, length);

            byte[] res = new byte[length];

            for (int i = 0; i < length; i++) {
                res[i] = (byte) (buf[i] ^ (RemoteConfig.ins().getEncryptKey() & 0xFF));
            }

            ByteBuf outBuf = ctx.alloc().buffer();

            outBuf.writeBytes(res);

            out.add(outBuf);
        }

        this.checkpoint(STATE.READ_FAKE_HTTP);
        break;
    }
    default:
        throw new Error("Shouldn't reach here.");
    }

}

From source file:com.zaradai.distributor.messaging.netty.handler.AbstractHandshakeHandler.java

License:Apache License

private void beginHandshake(ChannelHandlerContext handlerContext) {
    if (client) {
        final ByteBuf buffer = handlerContext.alloc().buffer(BUFFER_SIZE);
        clientWrite(buffer);//  w w w  .jav a2 s .c  o m
        handlerContext.writeAndFlush(buffer);
    }
}

From source file:com.zaradai.distributor.messaging.netty.handler.AbstractHandshakeHandler.java

License:Apache License

private void decodeAsServer(ChannelHandlerContext handlerContext, ByteBuf in) {
    if (serverReadAndValidate(handlerContext, in)) {
        final ByteBuf buffer = handlerContext.alloc().buffer(BUFFER_SIZE);
        serverWrite(buffer);/*from ww w  .  j av  a 2 s. c o m*/
        handlerContext.writeAndFlush(buffer);
        notifyHandshakeSuccess(handlerContext);
    } else {
        notifyHandshakeFailure(handlerContext, new MessagingException("Invalid Header"));
    }
}

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

License:Open Source License

@Override
protected void encode(ChannelHandlerContext ctx, Packet packet, List<Object> out) throws Exception {

    try {//from  w w w  . j a  va2  s.  c o  m
        byte id = protocol.findId(packet.getClass());

        ByteBuf byteBuf = ctx.alloc().buffer();
        byteBuf.writeByte(id);
        packet.write(byteBuf);

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

From source file:de.jackwhite20.japs.shared.pipeline.handler.JSONObjectEncoder.java

License:Open Source License

@Override
protected void encode(ChannelHandlerContext ctx, JSONObject jsonObject, List<Object> out) throws Exception {

    out.add(ByteBufUtil.encodeString(ctx.alloc(), CharBuffer.wrap(jsonObject.toString()), CharsetUtil.UTF_8));
}

From source file:de.unipassau.isl.evs.ssh.core.network.handler.Decrypter.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> decoded) throws Exception {
    try {//from  www .  j  a  va2  s  .c o  m
        final int encryptedLength = in.readInt();
        final int decryptedLength = decryptCipher.getOutputSize(encryptedLength);

        final ByteBuf out = ctx.alloc().buffer(decryptedLength);
        //Log.v(TAG, "Decrypting " + encryptedLength + "b data to " + decryptedLength + "b of decrypted data");
        decryptCipher.doFinal(in.nioBuffer(in.readerIndex(), encryptedLength),
                out.nioBuffer(out.writerIndex(), decryptedLength));
        out.writerIndex(out.writerIndex() + decryptedLength);
        in.readerIndex(in.readerIndex() + encryptedLength);

        decoded.add(out);
    } catch (GeneralSecurityException | RuntimeException e) {
        ctx.close();
        throw e;
    }
}