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.bifromq.mqtt.handler.v3;
  
  
  import static io.netty.handler.codec.mqtt.MqttConnectReturnCode.CONNECTION_REFUSED_IDENTIFIER_REJECTED;
  import static org.testng.Assert.assertNull;
  
  import org.apache.bifromq.mqtt.utils.MQTTMessageUtils;
  import org.apache.bifromq.plugin.eventcollector.EventType;
  import io.netty.handler.codec.mqtt.MqttConnAckMessage;
  import io.netty.handler.codec.mqtt.MqttConnectMessage;
  import io.netty.handler.codec.mqtt.MqttMessage;
  import java.util.concurrent.TimeUnit;
  import lombok.extern.slf4j.Slf4j;
  import org.testng.Assert;
  import org.testng.annotations.Test;
  
  @Slf4j
  public class MQTTBadConnectTest extends BaseMQTTTest {
  
      @Test
      public void unacceptableProtocolVersion() {
          MqttMessage connectMessage = MQTTMessageUtils.connectMessageWithMqttUnacceptableProtocolVersion();
          channel.writeInbound(connectMessage);
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          MqttConnAckMessage ackMessage = channel.readOutbound();
          assertNull(ackMessage);
          verifyEvent(EventType.UNACCEPTED_PROTOCOL_VER);
      }
  
      @Test
      public void mqttIdentifierRejected() {
          MqttMessage connectMessage = MQTTMessageUtils.connectMessageWithMqttIdentifierRejected();
          channel.writeInbound(connectMessage);
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          MqttConnAckMessage ackMessage = channel.readOutbound();
          Assert.assertEquals(CONNECTION_REFUSED_IDENTIFIER_REJECTED, ackMessage.variableHeader().connectReturnCode());
          verifyEvent(EventType.IDENTIFIER_REJECTED);
      }
  
      @Test
      public void badMqttPacket() {
          MqttMessage connectMessage = MQTTMessageUtils.failedToDecodeMessage();
          channel.writeInbound(connectMessage);
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          MqttConnAckMessage ackMessage = channel.readOutbound();
          assertNull(ackMessage);
          verifyEvent(EventType.PROTOCOL_ERROR);
      }
  
      @Test
      public void persistentSessionWithoutClientId() {
          MqttMessage connectMessage = MQTTMessageUtils.mqttConnectMessage(false, null, 10);
          channel.writeInbound(connectMessage);
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          MqttConnAckMessage ackMessage = channel.readOutbound();
          Assert.assertEquals(CONNECTION_REFUSED_IDENTIFIER_REJECTED, ackMessage.variableHeader().connectReturnCode());
          verifyEvent(EventType.IDENTIFIER_REJECTED);
      }
  
      @Test
      public void clientIdContainsNullCharacter() {
          MqttMessage connectMessage = MQTTMessageUtils.connectMessage("hello\u0000", null, null);
          channel.writeInbound(connectMessage);
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          verifyEvent(EventType.MALFORMED_CLIENT_IDENTIFIER);
      }
  
      @Test
      public void userNameContainsNullCharacter() {
          MqttMessage connectMessage = MQTTMessageUtils.connectMessage("hello", null, "user\u0000");
          channel.writeInbound(connectMessage);
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          verifyEvent(EventType.MALFORMED_USERNAME);
      }
  
      @Test
      public void willTopicContainsNullCharacter() {
          MqttMessage connectMessage = MQTTMessageUtils.connectMessage("hello", "hello\u0000", null);
          channel.writeInbound(connectMessage);
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          verifyEvent(EventType.MALFORMED_WILL_TOPIC);
      }
  
  
      @Test
      public void firstPacketNotConnect() {
          MqttMessage connectMessage = MQTTMessageUtils.subscribeMessageWithWildCard();
          channel.writeInbound(connectMessage);
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          MqttConnAckMessage ackMessage = channel.readOutbound();
          assertNull(ackMessage);
          verifyEvent(EventType.PROTOCOL_ERROR);
      }
  
      @Test
      public void connectTimeout() {
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          Assert.assertFalse(channel.isActive());
          verifyEvent(EventType.CONNECT_TIMEOUT);
      }
  
      @Test
      public void invalidWillTopic() {
          mockAuthPass();
          MqttConnectMessage connectMessage = MQTTMessageUtils.badWillTopicMqttConnectMessage();
          channel.writeInbound(connectMessage);
          // verifications
          channel.advanceTimeBy(disconnectDelay, TimeUnit.MILLISECONDS);
          channel.runPendingTasks();
          MqttConnAckMessage ackMessage = channel.readOutbound();
          assertNull(ackMessage);
          verifyEvent(EventType.INVALID_TOPIC);
      }
  }
  