content: /*
   * Copyright (c) 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.sasl;
  
  import java.security.AccessController;
  import java.security.InvalidParameterException;
  import java.security.NoSuchAlgorithmException;
  import java.security.PrivilegedAction;
  import java.security.Provider;
  import java.security.ProviderException;
  
  /**
   * A SASL provider for the authentication mechanisms SCRAM-SHA-1 and SCRAM-SHA-256, here renamed to MYSQLCJ-SCRAM-SHA-1 and MYSQL-SRAM-SHA-256 respectively to
   * avoid conflicts with future default implementations.
   */
  public final class ScramShaSaslProvider extends Provider {
      private static final long serialVersionUID = 866717063477857937L;
  
      private static final String INFO = "MySQL Connector/J SASL provider (implements client mechanisms for " + ScramSha1SaslClient.MECHANISM_NAME + " and "
              + ScramSha256SaslClient.MECHANISM_NAME + ")";
  
      private static final class ProviderService extends Provider.Service {
          public ProviderService(Provider provider, String type, String algorithm, String className) {
              super(provider, type, algorithm, className, null, null);
          }
  
          @Override
          public Object newInstance(Object constructorParameter) throws NoSuchAlgorithmException {
              String type = getType();
              if (constructorParameter != null) {
                  throw new InvalidParameterException("constructorParameter not used with " + type + " engines");
              }
  
              String algorithm = getAlgorithm();
              if (type.equals("SaslClientFactory")) {
                  if (algorithm.equals(ScramSha1SaslClient.MECHANISM_NAME)) {
                      return new ScramShaSaslClientFactory();
                  }
                  if (algorithm.equals(ScramSha256SaslClient.MECHANISM_NAME)) {
                      return new ScramShaSaslClientFactory();
                  }
              }
              throw new ProviderException("No implementation for " + algorithm + " " + type);
          }
      }
  
      public ScramShaSaslProvider() {
          super("MySQLScramShaSasl", 1.0, INFO);
  
          AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
              putService(new ProviderService(ScramShaSaslProvider.this, "SaslClientFactory", ScramSha1SaslClient.MECHANISM_NAME,
                      ScramShaSaslClientFactory.class.getName()));
              putService(new ProviderService(ScramShaSaslProvider.this, "SaslClientFactory", ScramSha256SaslClient.MECHANISM_NAME,
                      ScramShaSaslClientFactory.class.getName()));
              return null;
          });
      }
  }
  