content: /*
   * Copyright 2020-2023 the original author or authors.
   *
   * Licensed 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
   *
   *      https://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.jun.mqttx.broker.handler;
  
  import com.jun.mqttx.utils.TopicUtils;
  import io.netty.channel.ChannelHandlerContext;
  
  /**
   * 负责 topic 权限认证，运行规则：
   * <ol>
   *     <li>获取用户被允许订阅&发布的 topic 列表</li>
   *     <li>返回当前订阅&发布的 topic 是否被授权</li>
   * </ol>
   *
   * @author Jun
   * @since 1.0.4
   */
  public abstract class AbstractMqttTopicSecureHandler extends AbstractMqttSessionHandler {
  
      public AbstractMqttTopicSecureHandler(boolean enableCluster) {
          super(enableCluster);
      }
  
      /**
       * client 是否被允许订阅 topic
       *
       * @param ctx   {@link ChannelHandlerContext}
       * @param topic 订阅 topic
       * @return true 如果被授权
       */
      boolean hasAuthToSubTopic(ChannelHandlerContext ctx, String topic) {
          return TopicUtils.hasAuthToSubTopic(ctx, topic);
      }
  
      /**
       * client 是否允许发布消息到指定 topic
       *
       * @param ctx   {@link ChannelHandlerContext}
       * @param topic 订阅 topic
       * @return true if client authorised
       */
      boolean hasAuthToPubTopic(ChannelHandlerContext ctx, String topic) {
          return TopicUtils.hasAuthToPubTopic(ctx, topic);
      }
  }
  