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.ambari.server.security.authorization;
  
  import java.util.Collection;
  import java.util.Collections;
  
  import org.apache.ambari.server.orm.dao.MemberDAO;
  import org.apache.ambari.server.orm.dao.PrivilegeDAO;
  import org.apache.ambari.server.orm.dao.UserDAO;
  import org.apache.ambari.server.orm.entities.PrivilegeEntity;
  import org.apache.ambari.server.orm.entities.UserEntity;
  import org.apache.ambari.server.security.authentication.InvalidUsernamePasswordCombinationException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.ldap.core.DirContextOperations;
  import org.springframework.security.core.GrantedAuthority;
  import org.springframework.security.ldap.userdetails.LdapAuthoritiesPopulator;
  
  import com.google.inject.Inject;
  
  /**
   * Provides authorities population for LDAP user from LDAP catalog
   */
  public class AmbariLdapAuthoritiesPopulator implements LdapAuthoritiesPopulator {
    private static final Logger log = LoggerFactory.getLogger(AmbariLdapAuthoritiesPopulator.class);
  
    private AuthorizationHelper authorizationHelper;
    UserDAO userDAO;
    MemberDAO memberDAO;
    PrivilegeDAO privilegeDAO;
    Users users;
  
    @Inject
    public AmbariLdapAuthoritiesPopulator(AuthorizationHelper authorizationHelper,
                                          UserDAO userDAO, MemberDAO memberDAO, PrivilegeDAO privilegeDAO,
                                          Users users) {
      this.authorizationHelper = authorizationHelper;
      this.userDAO = userDAO;
      this.memberDAO = memberDAO;
      this.privilegeDAO = privilegeDAO;
      this.users = users;
    }
  
    @Override
    public Collection<? extends GrantedAuthority> getGrantedAuthorities(DirContextOperations userData, String username) {
      username = AuthorizationHelper.resolveLoginAliasToUserName(username);
  
      log.info("Get authorities for user " + username + " from local DB");
  
      UserEntity user;
  
      user = userDAO.findUserByName(username);
      
      if (user == null) {
        log.error("Can't get authorities for user " + username + ", he is not present in local DB");
        return Collections.emptyList();
      }
      if(!user.getActive()){
        throw new InvalidUsernamePasswordCombinationException(username);
      }
  
      Collection<PrivilegeEntity> privilegeEntities = users.getUserPrivileges(user);
  
      return authorizationHelper.convertPrivilegesToAuthorities(privilegeEntities);
    }
  }
  