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 com.github.jobson.auth.guest;
  
  import io.dropwizard.auth.AuthenticationException;
  import io.dropwizard.auth.Authenticator;
  import io.dropwizard.auth.PrincipalImpl;
  
  import java.security.Principal;
  import java.util.Optional;
  
  /**
   * An authenticator that always authenticates, returning a principal with the
   * ctor-supplied username.
   */
  public final class GuestAuthenticator implements Authenticator<String, Principal> {
  
      private final Optional<Principal> p;
  
      public GuestAuthenticator(String guestUserName) {
          this.p = Optional.of(new PrincipalImpl(guestUserName));
      }
  
      @Override
      public Optional<Principal> authenticate(String ignoredString) throws AuthenticationException {
          // The redundant string is needed because the dropwizard auth doesn't like
          // nulls being passed around (even if an arg is Void).
          return p;
      }
  }
  