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