Java tutorial
/** * 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.hadoop.hbase.security; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.SimpleChannelInboundHandler; import javax.security.sasl.SaslClient; import org.apache.hadoop.hbase.classification.InterfaceAudience; /** * Unwrap sasl messages. Should be placed after a * {@link io.netty.handler.codec.LengthFieldBasedFrameDecoder} */ @InterfaceAudience.Private public class SaslUnwrapHandler extends SimpleChannelInboundHandler<ByteBuf> { private final SaslClient saslClient; public SaslUnwrapHandler(SaslClient saslClient) { this.saslClient = saslClient; } @Override public void channelInactive(ChannelHandlerContext ctx) throws Exception { SaslUtil.safeDispose(saslClient); ctx.fireChannelInactive(); } @Override protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception { byte[] bytes = new byte[msg.readableBytes()]; msg.readBytes(bytes); ctx.fireChannelRead(Unpooled.wrappedBuffer(saslClient.unwrap(bytes, 0, bytes.length))); } }