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.HashMap;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.ambari.server.orm.dao.ClusterDAO;
  import org.apache.ambari.server.orm.dao.ViewInstanceDAO;
  import org.apache.ambari.server.orm.entities.PrivilegeEntity;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.security.core.Authentication;
  import org.springframework.security.core.GrantedAuthority;
  
  import com.google.inject.Inject;
  import com.google.inject.Singleton;
  
  @Singleton
  public class PermissionHelper {
  
    private final static Logger LOG = LoggerFactory.getLogger(PermissionHelper.class);
  
    @Inject
    private ClusterDAO clusterDAO;
  
    @Inject
    private ViewInstanceDAO viewInstanceDAO;
  
    /**
     * Retrieve permission labels based on the details of the authenticated user
     * @param authentication the authenticated user and associated access privileges
     * @return human-readable permissions
     */
    public Map<String,List<String>> getPermissionLabels(Authentication authentication) {
      Map<String,List<String>> permissionLabels = new HashMap<>();
      if (authentication.getAuthorities() != null) {
        for (GrantedAuthority grantedAuthority : authentication.getAuthorities()) {
          if(!(grantedAuthority instanceof AmbariGrantedAuthority)) {
            continue;
          }
          AmbariGrantedAuthority ambariGrantedAuthority = (AmbariGrantedAuthority) grantedAuthority;
  
          PrivilegeEntity privilegeEntity = ambariGrantedAuthority.getPrivilegeEntity();
  
          String key = null;
          try {
            switch(privilegeEntity.getResource().getResourceType().getName()) {
              case "CLUSTER":
                key = clusterDAO.findByResourceId(privilegeEntity.getResource().getId()).getClusterName();
                break;
              case "AMBARI":
                key = "Ambari";
                break;
              default:
                key = viewInstanceDAO.findByResourceId(privilegeEntity.getResource().getId()).getLabel();
                break;
            }
          } catch (Throwable ignored) {
            LOG.warn("Error occurred when cluster or view is searched based on resource id", ignored);
          }
  
          if(key != null) {
            if(!permissionLabels.containsKey(key)) {
              permissionLabels.put(key, new LinkedList<>());
            }
            permissionLabels.get(key).add(privilegeEntity.getPermission().getPermissionLabel());
          }
        }
      }
      return permissionLabels;
    }
  }
  