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Server functionality for HBase

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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;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.rmi.ssl.SslRMIServerSocketFactory;
import org.apache.yetus.audience.InterfaceAudience;

/**
 * Avoid SSL V3.0 "Poodle" Vulnerability - CVE-2014-3566
 */
@InterfaceAudience.Private
public class SslRMIServerSocketFactorySecure extends SslRMIServerSocketFactory {
  // If you add more constructors, you may have to change the rest of this implementation,
  // which assumes an empty constructor, i.e. there are no specially enabled protocols or
  // cipher suites on this RMI factory nor a provided SSLContext
  public SslRMIServerSocketFactorySecure() {
    super();
  }

  @Override
  public ServerSocket createServerSocket(int port) throws IOException {
    return new ServerSocket(port) {
      @Override
      public Socket accept() throws IOException {
        Socket socket = super.accept();
        SSLSocketFactory sslSocketFactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
        SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket(socket,
          socket.getInetAddress().getHostName(), socket.getPort(), true);
        sslSocket.setUseClientMode(false);
        sslSocket.setNeedClientAuth(false);

        ArrayList secureProtocols = new ArrayList<>();
        for (String p : sslSocket.getEnabledProtocols()) {
          if (!p.contains("SSLv3")) {
            secureProtocols.add(p);
          }
        }
        sslSocket.setEnabledProtocols(secureProtocols.toArray(new String[secureProtocols.size()]));

        return sslSocket;
      }
    };
  }
}