content: /*
   * Copyright (c) 2012, 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.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.net.Socket;
  
  public class NetworkResources {
      private final Socket mysqlConnection;
      private final InputStream mysqlInput;
      private final OutputStream mysqlOutput;
  
      public NetworkResources(Socket mysqlConnection, InputStream mysqlInput, OutputStream mysqlOutput) {
          this.mysqlConnection = mysqlConnection;
          this.mysqlInput = mysqlInput;
          this.mysqlOutput = mysqlOutput;
      }
  
      /**
       * Forcibly closes the underlying socket to MySQL.
       */
      public final void forceClose() {
          try {
              if (!ExportControlled.isSSLEstablished(this.mysqlConnection)) { // Fix for Bug#56979 does not apply to secure sockets.
                  try {
                      if (this.mysqlInput != null) {
                          this.mysqlInput.close();
                      }
                  } finally {
                      if (this.mysqlConnection != null && !this.mysqlConnection.isClosed() && !this.mysqlConnection.isInputShutdown()) {
                          try {
                              this.mysqlConnection.shutdownInput();
                          } catch (UnsupportedOperationException e) {
                              // Ignore, some sockets do not support this method.
                          }
                      }
                  }
              }
          } catch (IOException e) {
              // Can't do anything constructive about this.
          }
  
          try {
              if (!ExportControlled.isSSLEstablished(this.mysqlConnection)) { // Fix for Bug#56979 does not apply to secure sockets.
                  try {
                      if (this.mysqlOutput != null) {
                          this.mysqlOutput.close();
                      }
                  } finally {
                      if (this.mysqlConnection != null && !this.mysqlConnection.isClosed() && !this.mysqlConnection.isOutputShutdown()) {
                          try {
                              this.mysqlConnection.shutdownOutput();
                          } catch (UnsupportedOperationException e) {
                              // Ignore, some sockets do not support this method.
                          }
                      }
                  }
              }
          } catch (IOException e) {
              // Can't do anything constructive about this.
          }
  
          try {
              if (this.mysqlConnection != null) {
                  this.mysqlConnection.close();
              }
          } catch (IOException e) {
              // Can't do anything constructive about this.
          }
      }
  }
  