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             : /**
      19             :  *    @file
      20             :  *      This file implements the utility class for the CHIP Message Layer.
      21             :  */
      22             : 
      23             : #include <errno.h>
      24             : 
      25             : #include <messaging/ErrorCategory.h>
      26             : 
      27             : #include <inet/InetError.h>
      28             : #include <system/SystemConfig.h>
      29             : #include <system/SystemError.h>
      30             : 
      31             : namespace chip {
      32             : namespace Messaging {
      33             : 
      34           0 : bool IsIgnoredMulticastSendError(CHIP_ERROR err)
      35             : {
      36           0 :     return err == CHIP_NO_ERROR ||
      37             : #if CHIP_SYSTEM_CONFIG_USE_LWIP
      38             :         err == System::MapErrorLwIP(ERR_RTE)
      39             : #else
      40           0 :         err == CHIP_ERROR_POSIX(ENETUNREACH) || err == CHIP_ERROR_POSIX(EADDRNOTAVAIL)
      41             : #endif
      42             :         ;
      43             : }
      44             : 
      45           0 : CHIP_ERROR FilterUDPSendError(CHIP_ERROR err, bool isMulticast)
      46             : {
      47             :     // Don't report certain types of routing errors when they occur while sending multicast packets.
      48             :     // These may indicate that the underlying interface doesn't support multicast (e.g. the loopback
      49             :     // interface on linux) or that the selected interface doesn't have an appropriate source address.
      50           0 :     if (isMulticast)
      51             :     {
      52             : #if CHIP_SYSTEM_CONFIG_USE_LWIP
      53             :         if (err == System::MapErrorLwIP(ERR_RTE))
      54             :         {
      55             :             err = CHIP_NO_ERROR;
      56             :         }
      57             : #endif // CHIP_SYSTEM_CONFIG_USE_LWIP
      58             : 
      59             : #if CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_CONFIG_USE_NETWORK_FRAMEWORK
      60           0 :         if (err == CHIP_ERROR_POSIX(ENETUNREACH) || err == CHIP_ERROR_POSIX(EADDRNOTAVAIL))
      61             :         {
      62           0 :             err = CHIP_NO_ERROR;
      63             :         }
      64             : #endif
      65             :     }
      66             : 
      67           0 :     return err;
      68             : }
      69             : 
      70             : /**
      71             :  *  Checks if error, while sending, is critical enough to report to the application.
      72             :  *
      73             :  *  @param[in]    err      The #CHIP_ERROR being checked for criticality.
      74             :  *
      75             :  *  @return    true if the error is NOT critical; false otherwise.
      76             :  *
      77             :  */
      78        1531 : bool IsSendErrorNonCritical(CHIP_ERROR err)
      79             : {
      80        4593 :     return (err == CHIP_ERROR_NOT_IMPLEMENTED || err == CHIP_ERROR_OUTBOUND_MESSAGE_TOO_BIG || err == CHIP_ERROR_MESSAGE_TOO_LONG ||
      81        4593 :             err == CHIP_ERROR_NO_MEMORY || CHIP_CONFIG_IsPlatformErrorNonCritical(err));
      82             : }
      83             : 
      84             : } // namespace Messaging
      85             : } // namespace chip