Line data    Source code

       1             : /**
       2             :  *    Copyright (c) 2020 Project CHIP Authors
       3             :  *    All rights reserved.
       4             :  *
       5             :  *    Licensed under the Apache License, Version 2.0 (the "License");
       6             :  *    you may not use this file except in compliance with the License.
       7             :  *    You may obtain a copy of the License at
       8             :  *
       9             :  *        http://www.apache.org/licenses/LICENSE-2.0
      10             :  *
      11             :  *    Unless required by applicable law or agreed to in writing, software
      12             :  *    distributed under the License is distributed on an "AS IS" BASIS,
      13             :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14             :  *    See the License for the specific language governing permissions and
      15             :  *    limitations under the License.
      16             :  */
      17             : 
      18             : #include "UnsolicitedStatusHandler.h"
      19             : #include <lib/support/TypeTraits.h>
      20             : #include <protocols/secure_channel/Constants.h>
      21             : #include <protocols/secure_channel/StatusReport.h>
      22             : 
      23             : using namespace chip;
      24             : using namespace chip::Protocols;
      25             : using namespace chip::Protocols::SecureChannel;
      26             : using namespace chip::Messaging;
      27             : 
      28           1 : CHIP_ERROR UnsolicitedStatusHandler::Init(ExchangeManager * exchangeManager)
      29             : {
      30           1 :     return exchangeManager->RegisterUnsolicitedMessageHandlerForType(SecureChannel::Id, to_underlying(MsgType::StatusReport), this);
      31             : }
      32             : 
      33           0 : CHIP_ERROR UnsolicitedStatusHandler::OnMessageReceived(ExchangeContext * ec, const PayloadHeader & payloadHeader,
      34             :                                                        System::PacketBufferHandle && payload)
      35             : {
      36           0 :     if (!payloadHeader.HasMessageType(MsgType::StatusReport))
      37             :     {
      38           0 :         return CHIP_ERROR_INCORRECT_STATE;
      39             :     }
      40             : 
      41           0 :     auto session = ec->GetSessionHandle();
      42           0 :     if (!session->IsSecureSession())
      43             :     {
      44             :         // Nothing to do here.  We only care about CloseSession on secure
      45             :         // sessions.
      46           0 :         return CHIP_NO_ERROR;
      47             :     }
      48             : 
      49           0 :     StatusReport report;
      50           0 :     ReturnErrorOnFailure(report.Parse(std::move(payload)));
      51             : 
      52           0 :     if (report.GetGeneralCode() == GeneralStatusCode::kSuccess && report.GetProtocolCode() == kProtocolCodeCloseSession)
      53             :     {
      54           0 :         ChipLogProgress(ExchangeManager, "Received CloseSession status message, closing session");
      55           0 :         session->AsSecureSession()->MarkForEviction();
      56           0 :         return CHIP_NO_ERROR;
      57             :     }
      58             : 
      59             :     // Just ignore this message.
      60           0 :     return CHIP_NO_ERROR;
      61           0 : }
      62             : 
      63           0 : void UnsolicitedStatusHandler::OnResponseTimeout(ExchangeContext * ec)
      64             : {
      65             :     // We should never get here, since we never send messages ourselves.
      66           0 : }
      67             : 
      68           0 : CHIP_ERROR UnsolicitedStatusHandler::OnUnsolicitedMessageReceived(const PayloadHeader & payloadHeader,
      69             :                                                                   ExchangeDelegate *& newDelegate)
      70             : {
      71           0 :     newDelegate = this;
      72           0 :     return CHIP_NO_ERROR;
      73             : }