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   * 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.
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  package org.apache.ambari.server.security.authorization;
  
  import static org.easymock.EasyMock.expect;
  import static org.easymock.EasyMock.expectLastCall;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertTrue;
  
  import java.util.Collections;
  
  import org.apache.ambari.server.configuration.Configuration;
  import org.apache.ambari.server.ldap.service.AmbariLdapConfigurationProvider;
  import org.apache.ambari.server.orm.entities.UserAuthenticationEntity;
  import org.apache.ambari.server.orm.entities.UserEntity;
  import org.apache.ambari.server.security.ClientSecurityType;
  import org.apache.ambari.server.security.authentication.AmbariUserAuthentication;
  import org.apache.ambari.server.security.authentication.InvalidUsernamePasswordCombinationException;
  import org.easymock.EasyMockSupport;
  import org.junit.Test;
  import org.springframework.security.authentication.BadCredentialsException;
  import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
  import org.springframework.security.core.Authentication;
  import org.springframework.security.ldap.authentication.LdapAuthenticationProvider;
  import org.springframework.security.ldap.userdetails.LdapUserDetails;
  
  public class AmbariLdapAuthenticationProviderTest extends EasyMockSupport {
    private static final String ALLOWED_USER_NAME = "allowedUser";
    private static final String ALLOWED_USER_DN = "uid=alloweduser,ou=people,dc=ambari,dc=apache,dc=org";
  
    @Test(expected = InvalidUsernamePasswordCombinationException.class)
    public void testBadCredential() throws Exception {
      Authentication authentication = new UsernamePasswordAuthenticationToken(ALLOWED_USER_NAME, "password");
  
      Configuration configuration = createMockConfiguration(ClientSecurityType.LDAP);
  
      Users users = createMock(Users.class);
      AmbariLdapConfigurationProvider ldapConfigurationProvider = createMock(AmbariLdapConfigurationProvider.class);
      AmbariLdapAuthoritiesPopulator authoritiesPopulator = createMock(AmbariLdapAuthoritiesPopulator.class);
  
      LdapAuthenticationProvider ldapAuthenticationProvider = createMock(LdapAuthenticationProvider.class);
      expect(ldapAuthenticationProvider.authenticate(authentication)).andThrow(new BadCredentialsException("")).once();
  
      AmbariLdapAuthenticationProvider authenticationProvider = createMockBuilder(AmbariLdapAuthenticationProvider.class)
          .withConstructor(users, configuration, ldapConfigurationProvider, authoritiesPopulator)
          .addMockedMethod("loadLdapAuthenticationProvider")
          .createMock();
      expect(authenticationProvider.loadLdapAuthenticationProvider(ALLOWED_USER_NAME)).andReturn(ldapAuthenticationProvider).once();
  
      replayAll();
  
      authenticationProvider.authenticate(authentication);
    }
  
    @Test
    public void testAuthenticate() throws Exception {
      Authentication authentication = new UsernamePasswordAuthenticationToken(ALLOWED_USER_NAME, "password");
  
      LdapUserDetails ldapUserDetails = createMock(LdapUserDetails.class);
      expect(ldapUserDetails.getDn()).andReturn(ALLOWED_USER_DN).atLeastOnce();
  
      Authentication authenticatedAuthentication = createMock(Authentication.class);
      expect(authenticatedAuthentication.getPrincipal()).andReturn(ldapUserDetails).atLeastOnce();
  
      Configuration configuration = createMockConfiguration(ClientSecurityType.LDAP);
  
      UserEntity userEntity = createMock(UserEntity.class);
  
      UserAuthenticationEntity userAuthenticationEntity = createMock(UserAuthenticationEntity.class);
      expect(userAuthenticationEntity.getUser()).andReturn(userEntity).atLeastOnce();
  
      User user = createMock(User.class);
  
      Users users = createMock(Users.class);
      expect(users.getUserAuthenticationEntities(UserAuthenticationType.LDAP, ALLOWED_USER_DN)).andReturn(Collections.singleton(userAuthenticationEntity)).atLeastOnce();
      users.validateLogin(userEntity, ALLOWED_USER_NAME);
      expectLastCall().atLeastOnce();
      expect(users.getUser(userEntity)).andReturn(user).atLeastOnce();
      expect(users.getUserAuthorities(userEntity)).andReturn(Collections.emptyList()).atLeastOnce();
  
      AmbariLdapConfigurationProvider ldapConfigurationProvider = createMock(AmbariLdapConfigurationProvider.class);
  
      AmbariLdapAuthoritiesPopulator authoritiesPopulator = createMock(AmbariLdapAuthoritiesPopulator.class);
  
      LdapAuthenticationProvider ldapAuthenticationProvider = createMock(LdapAuthenticationProvider.class);
      expect(ldapAuthenticationProvider.authenticate(authentication)).andReturn(authenticatedAuthentication).once();
  
      AmbariLdapAuthenticationProvider authenticationProvider = createMockBuilder(AmbariLdapAuthenticationProvider.class)
          .withConstructor(users, configuration, ldapConfigurationProvider, authoritiesPopulator)
          .addMockedMethod("loadLdapAuthenticationProvider")
          .createMock();
      expect(authenticationProvider.loadLdapAuthenticationProvider(ALLOWED_USER_NAME)).andReturn(ldapAuthenticationProvider).once();
  
      replayAll();
  
      Authentication result = authenticationProvider.authenticate(authentication);
      assertTrue(result instanceof AmbariUserAuthentication);
      assertTrue(result.isAuthenticated());
  
      verifyAll();
    }
  
    @Test
    public void testDisabled() throws Exception {
      Authentication authentication = new UsernamePasswordAuthenticationToken(ALLOWED_USER_NAME, "password");
  
      Configuration configuration = createMockConfiguration(ClientSecurityType.LOCAL);
      Users users = createMock(Users.class);
      AmbariLdapConfigurationProvider ldapConfigurationProvider = createMock(AmbariLdapConfigurationProvider.class);
      AmbariLdapAuthoritiesPopulator authoritiesPopulator = createMock(AmbariLdapAuthoritiesPopulator.class);
  
      AmbariLdapAuthenticationProvider authenticationProvider = createMockBuilder(AmbariLdapAuthenticationProvider.class)
          .withConstructor(users, configuration, ldapConfigurationProvider, authoritiesPopulator)
          .addMockedMethod("loadLdapAuthenticationProvider")
          .createMock();
  
      replayAll();
  
      Authentication result = authenticationProvider.authenticate(authentication);
      assertNull(result);
  
      verifyAll();
    }
  
    private Configuration createMockConfiguration(ClientSecurityType clientSecurityType) {
      Configuration configuration = createMock(Configuration.class);
      expect(configuration.getClientSecurityType()).andReturn(clientSecurityType).atLeastOnce();
      return configuration;
    }
  
  }
  