Line data    Source code

       1             : /*
       2             :  *    Copyright (c) 2022 Project CHIP Authors
       3             :  *
       4             :  *    Licensed under the Apache License, Version 2.0 (the "License");
       5             :  *    you may not use this file except in compliance with the License.
       6             :  *    You may obtain a copy of the License at
       7             :  *
       8             :  *        http://www.apache.org/licenses/LICENSE-2.0
       9             :  *
      10             :  *    Unless required by applicable law or agreed to in writing, software
      11             :  *    distributed under the License is distributed on an "AS IS" BASIS,
      12             :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      13             :  *    See the License for the specific language governing permissions and
      14             :  *    limitations under the License.
      15             :  */
      16             : 
      17             : #pragma once
      18             : 
      19             : #include <messaging/ExchangeMessageDispatch.h>
      20             : #include <protocols/secure_channel/Constants.h>
      21             : 
      22             : namespace chip {
      23             : namespace Messaging {
      24             : 
      25             : class EphemeralExchangeDispatch : public ExchangeMessageDispatch
      26             : {
      27             : public:
      28          13 :     static ExchangeMessageDispatch & Instance()
      29             :     {
      30          13 :         static EphemeralExchangeDispatch instance;
      31          13 :         return instance;
      32             :     }
      33             : 
      34           6 :     EphemeralExchangeDispatch() {}
      35           6 :     ~EphemeralExchangeDispatch() override {}
      36             : 
      37             : protected:
      38          13 :     bool MessagePermitted(Protocols::Id protocol, uint8_t type) override
      39             :     {
      40             :         // Only permit StandaloneAck
      41          26 :         return (protocol == Protocols::SecureChannel::Id &&
      42          26 :                 type == to_underlying(Protocols::SecureChannel::MsgType::StandaloneAck));
      43             :     }
      44             : 
      45           0 :     bool IsEncryptionRequired() const override
      46             :     {
      47             :         // This function should not be called at all
      48           0 :         VerifyOrDie(false);
      49             :         return false;
      50             :     }
      51             : };
      52             : 
      53             : } // namespace Messaging
      54             : } // namespace chip