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.cassandra.auth;
  
  import com.google.common.annotations.VisibleForTesting;
  
  import org.apache.cassandra.exceptions.ConfigurationException;
  import org.apache.cassandra.metrics.CIDRAuthorizerMetrics;
  
  /**
   * Abstract CIDR authorizer, contains code common to all implementations of ICIDRAuthorizer
   */
  public abstract class AbstractCIDRAuthorizer implements ICIDRAuthorizer
  {
      protected static CIDRPermissionsManager cidrPermissionsManager;
      protected static CIDRGroupsMappingManager cidrGroupsMappingManager;
  
      protected static CIDRAuthorizerMetrics cidrAuthorizerMetrics;
  
      @VisibleForTesting
      void createManagers()
      {
          // CIDRPermissionsManager provides functionality to retrieve or update CIDR permissions for a role
          cidrPermissionsManager = new CIDRPermissionsManager();
  
          // CIDRGroupsMappingManager provides functionality to retrieve or update CIDR groups mapping table
          cidrGroupsMappingManager = new CIDRGroupsMappingManager();
      }
  
      protected void commonSetup()
      {
          createManagers();
  
          cidrPermissionsManager.setup();
          cidrGroupsMappingManager.setup();
  
          cidrAuthorizerMetrics = new CIDRAuthorizerMetrics();
      }
  
      @Override
      public CIDRGroupsMappingManager getCidrGroupsMappingManager()
      {
          return cidrGroupsMappingManager;
      }
  
      @Override
      public CIDRAuthorizerMetrics getCidrAuthorizerMetrics() { return cidrAuthorizerMetrics; }
  
      @Override
      public boolean requireAuthorization()
      {
          return true;
      }
  
      @Override
      public void setCidrGroupsForRole(RoleResource role, CIDRPermissions cidrPermissions)
      {
          // Allow 'create role' and 'alter role' CQL commands with ACCESS FROM CIDRS clause in both cases,
          // when feature is enabled and also disabled
          cidrPermissionsManager.setCidrGroupsForRole(role, cidrPermissions);
      }
  
      @Override
      public void dropCidrPermissionsForRole(RoleResource role)
      {
          // Allow dropping of CIDR permissions for roles in both cases,
          // when feature is enabled and also disabled
          cidrPermissionsManager.drop(role);
      }
  
      @Override
      public void validateConfiguration() throws ConfigurationException
      {
          // do nothing
      }
  }
  