Line data    Source code

       1             : /*
       2             :  *
       3             :  *    Copyright (c) 2021 Project CHIP Authors
       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             : #include "DeviceAttestationCredsProvider.h"
      18             : 
      19             : namespace chip {
      20             : namespace Credentials {
      21             : 
      22             : namespace {
      23             : 
      24             : // Version to have a default placeholder so the getter never
      25             : // returns `nullptr` by default.
      26             : class UnimplementedDACProvider : public DeviceAttestationCredentialsProvider
      27             : {
      28             : public:
      29           0 :     CHIP_ERROR GetCertificationDeclaration(MutableByteSpan & out_cd_buffer) override
      30             :     {
      31             :         (void) out_cd_buffer;
      32           0 :         return CHIP_ERROR_NOT_IMPLEMENTED;
      33             :     }
      34             : 
      35           0 :     CHIP_ERROR GetFirmwareInformation(MutableByteSpan & out_firmware_info_buffer) override
      36             :     {
      37             :         (void) out_firmware_info_buffer;
      38           0 :         return CHIP_ERROR_NOT_IMPLEMENTED;
      39             :     }
      40             : 
      41           1 :     CHIP_ERROR GetDeviceAttestationCert(MutableByteSpan & out_dac_buffer) override
      42             :     {
      43             :         (void) out_dac_buffer;
      44           1 :         return CHIP_ERROR_NOT_IMPLEMENTED;
      45             :     }
      46             : 
      47           0 :     CHIP_ERROR GetProductAttestationIntermediateCert(MutableByteSpan & out_pai_buffer) override
      48             :     {
      49             :         (void) out_pai_buffer;
      50           0 :         return CHIP_ERROR_NOT_IMPLEMENTED;
      51             :     }
      52             : 
      53           0 :     CHIP_ERROR SignWithDeviceAttestationKey(const ByteSpan & message_to_sign, MutableByteSpan & out_signature_buffer) override
      54             :     {
      55             :         (void) message_to_sign;
      56             :         (void) out_signature_buffer;
      57           0 :         return CHIP_ERROR_NOT_IMPLEMENTED;
      58             :     }
      59             : };
      60             : 
      61             : // Default to avoid nullptr on getter and cleanly handle new products/clients before
      62             : // they provide their own.
      63             : UnimplementedDACProvider gDefaultDACProvider;
      64             : 
      65             : DeviceAttestationCredentialsProvider * gDacProvider = &gDefaultDACProvider;
      66             : 
      67             : } // namespace
      68             : 
      69           2 : DeviceAttestationCredentialsProvider * GetDeviceAttestationCredentialsProvider()
      70             : {
      71           2 :     return gDacProvider;
      72             : }
      73             : 
      74           1 : void SetDeviceAttestationCredentialsProvider(DeviceAttestationCredentialsProvider * provider)
      75             : {
      76           1 :     if (provider == nullptr)
      77             :     {
      78           0 :         return;
      79             :     }
      80             : 
      81           1 :     gDacProvider = provider;
      82             : }
      83             : 
      84           0 : bool IsDeviceAttestationCredentialsProviderSet()
      85             : {
      86           0 :     return (gDacProvider != &gDefaultDACProvider);
      87             : }
      88             : 
      89             : } // namespace Credentials
      90             : } // namespace chip