content: /*
   * 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.kafka.common.security.auth;
  
  import java.net.InetAddress;
  import java.util.Optional;
  
  import javax.net.ssl.SSLSession;
  import javax.security.sasl.SaslServer;
  
  public class SaslAuthenticationContext implements AuthenticationContext {
      private final SaslServer server;
      private final SecurityProtocol securityProtocol;
      private final InetAddress clientAddress;
      private final String listenerName;
      private final Optional<SSLSession> sslSession;
  
      public SaslAuthenticationContext(SaslServer server, SecurityProtocol securityProtocol, InetAddress clientAddress, String listenerName) {
          this(server, securityProtocol, clientAddress, listenerName, Optional.empty());
      }
  
      public SaslAuthenticationContext(SaslServer server, SecurityProtocol securityProtocol,
                                       InetAddress clientAddress,
                                       String listenerName,
                                       Optional<SSLSession> sslSession) {
          this.server = server;
          this.securityProtocol = securityProtocol;
          this.clientAddress = clientAddress;
          this.listenerName = listenerName;
          this.sslSession = sslSession;
      }
  
      public SaslServer server() {
          return server;
      }
  
      /**
       * Returns SSL session for the connection if security protocol is SASL_SSL. If SSL
       * mutual client authentication is enabled for the listener, peer principal can be
       * determined using {@link SSLSession#getPeerPrincipal()}.
       */
      public Optional<SSLSession> sslSession() {
          return sslSession;
      }
  
      @Override
      public SecurityProtocol securityProtocol() {
          return securityProtocol;
      }
  
      @Override
      public InetAddress clientAddress() {
          return clientAddress;
      }
  
      @Override
      public String listenerName() {
          return listenerName;
      }
  }
  