content: /*
   * Copyright (c) 2015, 2020, Oracle and/or its affiliates.
   *
   * This program is free software; you can redistribute it and/or modify it under
   * the terms of the GNU General Public License, version 2.0, as published by the
   * Free Software Foundation.
   *
   * This program is also distributed with certain software (including but not
   * limited to OpenSSL) that is licensed under separate terms, as designated in a
   * particular file or component or in included license documentation. The
   * authors of MySQL hereby grant you an additional permission to link the
   * program and your derivative works with the separately licensed software that
   * they have included with MySQL.
   *
   * Without limiting anything contained in the foregoing, this file, which is
   * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
   * version 1.0, a copy of which can be found at
   * http://oss.oracle.com/licenses/universal-foss-exception.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
   * for more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
   */
  
  package com.mysql.cj.protocol;
  
  import java.io.BufferedOutputStream;
  import java.io.IOException;
  import java.net.Socket;
  
  import com.mysql.cj.Messages;
  import com.mysql.cj.conf.PropertySet;
  import com.mysql.cj.exceptions.CJException;
  import com.mysql.cj.exceptions.ExceptionFactory;
  import com.mysql.cj.exceptions.ExceptionInterceptor;
  import com.mysql.cj.exceptions.UnableToConnectException;
  import com.mysql.jdbc.SocketFactoryWrapper;
  
  public abstract class AbstractSocketConnection implements SocketConnection {
  
      protected String host = null;
      protected int port = 3306;
      protected SocketFactory socketFactory = null;
      protected Socket mysqlSocket = null;
      protected FullReadInputStream mysqlInput = null;
      protected BufferedOutputStream mysqlOutput = null;
  
      protected ExceptionInterceptor exceptionInterceptor;
      protected PropertySet propertySet;
  
      public String getHost() {
          return this.host;
      }
  
      public int getPort() {
          return this.port;
      }
  
      public Socket getMysqlSocket() {
          return this.mysqlSocket;
      }
  
      public FullReadInputStream getMysqlInput() throws IOException {
          if (this.mysqlInput != null) {
              return this.mysqlInput;
          }
          throw new IOException(Messages.getString("SocketConnection.2"));
      }
  
      public void setMysqlInput(FullReadInputStream mysqlInput) {
          this.mysqlInput = mysqlInput;
      }
  
      public BufferedOutputStream getMysqlOutput() throws IOException {
          if (this.mysqlOutput != null) {
              return this.mysqlOutput;
          }
          throw new IOException(Messages.getString("SocketConnection.2"));
      }
  
      public boolean isSSLEstablished() {
          return ExportControlled.enabled() && ExportControlled.isSSLEstablished(this.getMysqlSocket());
      }
  
      public SocketFactory getSocketFactory() {
          return this.socketFactory;
      }
  
      public void setSocketFactory(SocketFactory socketFactory) {
          this.socketFactory = socketFactory;
      }
  
      /**
       * Forcibly closes the underlying socket to MySQL.
       */
      public void forceClose() {
          try {
              getNetworkResources().forceClose();
          } finally {
              this.mysqlSocket = null;
              this.mysqlInput = null;
              this.mysqlOutput = null;
          }
      }
  
      // We do this to break the chain between MysqlIO and Connection, so that we can have PhantomReferences on connections that let the driver clean up the
      // socket connection without having to use finalize() somewhere (which although more straightforward, is horribly inefficient).
      public NetworkResources getNetworkResources() {
          return new NetworkResources(this.mysqlSocket, this.mysqlInput, this.mysqlOutput);
      }
  
      public ExceptionInterceptor getExceptionInterceptor() {
          return this.exceptionInterceptor;
      }
  
      public PropertySet getPropertySet() {
          return this.propertySet;
      }
  
      protected SocketFactory createSocketFactory(String socketFactoryClassName) {
          try {
              if (socketFactoryClassName == null) {
                  throw ExceptionFactory.createException(UnableToConnectException.class, Messages.getString("SocketConnection.0"), getExceptionInterceptor());
              }
  
              Object sf = Class.forName(socketFactoryClassName).newInstance();
              if (sf instanceof SocketFactory) {
                  return (SocketFactory) (Class.forName(socketFactoryClassName).newInstance());
              }
  
              // wrap legacy socket factories
              return new SocketFactoryWrapper(sf);
          } catch (InstantiationException | IllegalAccessException | ClassNotFoundException | CJException ex) {
              throw ExceptionFactory.createException(UnableToConnectException.class,
                      Messages.getString("SocketConnection.1", new String[] { socketFactoryClassName }), getExceptionInterceptor());
          }
      }
  
  }
  