| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.kerby.kerberos.kdc.impl; |
| |
| import io.netty.buffer.ByteBuf; |
| import io.netty.buffer.Unpooled; |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.channel.SimpleChannelInboundHandler; |
| import io.netty.channel.socket.DatagramPacket; |
| import org.apache.kerby.kerberos.kerb.server.KdcContext; |
| import org.apache.kerby.kerberos.kerb.server.KdcHandler; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.net.InetSocketAddress; |
| import java.nio.ByteBuffer; |
| |
| |
| public class NettyKdcUdpServerHandler extends SimpleChannelInboundHandler<DatagramPacket> { |
| |
| private final KdcHandler myKdcHandler; |
| private static final Logger LOG = LoggerFactory.getLogger(NettyKdcUdpServerHandler.class); |
| |
| public NettyKdcUdpServerHandler(KdcContext kdcContext) { |
| this.myKdcHandler = new KdcHandler(kdcContext); |
| } |
| |
| @Override |
| protected void channelRead0(ChannelHandlerContext channelHandlerContext, |
| DatagramPacket datagramPacket) throws Exception { |
| ByteBuf byteBuf = datagramPacket.content(); |
| byte[] msgBytes = new byte[byteBuf.readableBytes()]; |
| byteBuf.readBytes(msgBytes); |
| ByteBuffer requestMessage = ByteBuffer.wrap(msgBytes); |
| InetSocketAddress clientAddress = datagramPacket.sender(); |
| |
| boolean isTcp = false; |
| try { |
| ByteBuffer responseMessage = myKdcHandler.handleMessage(requestMessage, |
| isTcp, clientAddress.getAddress()); |
| channelHandlerContext.writeAndFlush( |
| new DatagramPacket(Unpooled.wrappedBuffer(responseMessage), clientAddress)); |
| } catch (Exception e) { |
| LOG.error("Error occurred while processing request: " |
| + e.toString()); |
| } |
| } |
| |
| /** |
| * Calls {@link ChannelHandlerContext#fireExceptionCaught(Throwable)} to |
| * forward to the next {ChannelHandler} in the {ChannelPipeline} |
| * |
| * Sub-classes may override this method to change behavior. |
| */ |
| @Override |
| public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) |
| throws Exception { |
| cause.printStackTrace(); |
| ctx.fireExceptionCaught(cause); |
| } |
| } |