org.apache.hadoop.hbase.security.SaslWrapHandler Maven / Gradle / Ivy
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* 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 javax.security.sasl.SaslException;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext;
import org.apache.hbase.thirdparty.io.netty.handler.codec.MessageToByteEncoder;
/**
* wrap sasl messages.
*/
@InterfaceAudience.Private
public class SaslWrapHandler extends MessageToByteEncoder {
public interface Wrapper {
byte[] wrap(byte[] outgoing, int offset, int len) throws SaslException;
}
private final Wrapper wrapper;
public SaslWrapHandler(Wrapper wrapper) {
this.wrapper = wrapper;
}
@Override
protected void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) throws Exception {
byte[] bytes = new byte[msg.readableBytes()];
msg.readBytes(bytes);
byte[] wrapperBytes = wrapper.wrap(bytes, 0, bytes.length);
out.ensureWritable(4 + wrapperBytes.length);
out.writeInt(wrapperBytes.length);
out.writeBytes(wrapperBytes);
}
}