/*
 * 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.celeborn.common.network.sasl.anonymous;

import static org.apache.celeborn.common.network.sasl.SaslUtils.*;

import java.security.Provider;
import java.security.Security;

/**
 * This is a Java Security Provider that adds support for the ANONYMOUS SASL mechanism. It allows
 * for the registration of SASL client and server factories for ANONYMOUS authentication.
 *
 * <p>This provider registers the necessary SASL factories to enable ANONYMOUS SASL mechanism
 * authentication.
 */
public final class AnonymousSaslProvider extends Provider {

  private static boolean init = false;

  private AnonymousSaslProvider() {
    super("AnonymousSasl", 1.0, "ANONYMOUS SASL MECHANISM PROVIDER");
    put("SaslClientFactory." + ANONYMOUS, AnonymousSaslClientFactory.class.getName());
    put("SaslServerFactory." + ANONYMOUS, AnonymousSaslServerFactory.class.getName());
  }

  public static synchronized void initializeIfNeeded() {
    if (!init) {
      AnonymousSaslProvider provider = new AnonymousSaslProvider();
      Security.addProvider(provider);
      init = true;
    }
  }
}
