src/platform/ESP32/ESP32FactoryDataProvider.h

/*
 *
 *    Copyright (c) 2022 Project CHIP Authors
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
#pragma once

#include <credentials/DeviceAttestationCredsProvider.h>
#include <platform/CommissionableDataProvider.h>
#include <platform/internal/GenericDeviceInstanceInfoProvider.h>

namespace chip {
namespace DeviceLayer {

/**
 * @brief This class provides Commissionable data, Device Attestation Credentials,
 *        and Device Instance Info.
 */

class ESP32FactoryDataProvider : public CommissionableDataProvider,
                                 public Credentials::DeviceAttestationCredentialsProvider
#if CHIP_DEVICE_CONFIG_ENABLE_DEVICE_INSTANCE_INFO_PROVIDER
    ,
                                 public Internal::GenericDeviceInstanceInfoProvider<Internal::ESP32Config>
#endif // CHIP_DEVICE_CONFIG_ENABLE_DEVICE_INSTANCE_INFO_PROVIDER
{
public:
    ESP32FactoryDataProvider() :
        CommissionableDataProvider(), Credentials::DeviceAttestationCredentialsProvider()
#if CHIP_DEVICE_CONFIG_ENABLE_DEVICE_INSTANCE_INFO_PROVIDER
        ,
        Internal::GenericDeviceInstanceInfoProvider<Internal::ESP32Config>(ConfigurationManagerImpl::GetDefaultInstance())
#endif // CHIP_DEVICE_CONFIG_ENABLE_DEVICE_INSTANCE_INFO_PROVIDER
    {}

    // ===== Members functions that implement the CommissionableDataProvider
    CHIP_ERROR GetSetupDiscriminator(uint16_t & setupDiscriminator) override;
    CHIP_ERROR SetSetupDiscriminator(uint16_t setupDiscriminator) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
    CHIP_ERROR GetSpake2pIterationCount(uint32_t & iterationCount) override;
    CHIP_ERROR GetSpake2pSalt(MutableByteSpan & saltBuf) override;
    CHIP_ERROR GetSpake2pVerifier(MutableByteSpan & verifierBuf, size_t & verifierLen) override;
    CHIP_ERROR GetSetupPasscode(uint32_t & setupPasscode) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
    CHIP_ERROR SetSetupPasscode(uint32_t setupPasscode) override { return CHIP_ERROR_NOT_IMPLEMENTED; }

    // ===== Members functions that implement the DeviceAttestationCredentialsProvider
    CHIP_ERROR GetCertificationDeclaration(MutableByteSpan & outBuffer) override;
    CHIP_ERROR GetFirmwareInformation(MutableByteSpan & out_firmware_info_buffer) override;
    CHIP_ERROR GetDeviceAttestationCert(MutableByteSpan & outBuffer) override;
    CHIP_ERROR GetProductAttestationIntermediateCert(MutableByteSpan & outBuffer) override;
    CHIP_ERROR SignWithDeviceAttestationKey(const ByteSpan & messageToSign, MutableByteSpan & outSignBuffer) override;

#ifdef CONFIG_ENABLE_SET_CERT_DECLARATION_API
    /**
     * @brief API to set the Certification Declaration (CD).
     *
     * The GetCertificationDeclaration() API implementation reads the CD from the NVS namespace `chip-factory`.
     * Use this API to set the CD if it is stored at a different location, e.g., embedded in the firmware.
     * Subsequent reads after calling this API will return the set CD.
     *
     * @param[in] cd ByteSpan containing the Certification Declaration.
     *               The underlying data must remain allocated throughout the lifetime of the device,
     *               as the API does not make a copy.
     *
     * @return CHIP_ERROR indicating the success or failure of the operation.
     */
    CHIP_ERROR SetCertificationDeclaration(const ByteSpan & cd)
    {
        VerifyOrReturnError(!cd.empty(), CHIP_ERROR_INVALID_ARGUMENT);
        mCD = cd;
        return CHIP_NO_ERROR;
    }
#endif // CONFIG_ENABLE_SET_CERT_DECLARATION_API

#if CHIP_DEVICE_CONFIG_ENABLE_DEVICE_INSTANCE_INFO_PROVIDER
    // ===== Members functions that implement the GenericDeviceInstanceInfoProvider
    CHIP_ERROR GetVendorName(char * buf, size_t bufSize) override;
    CHIP_ERROR GetVendorId(uint16_t & vendorId) override;
    CHIP_ERROR GetProductName(char * buf, size_t bufSize) override;
    CHIP_ERROR GetProductId(uint16_t & productId) override;
    CHIP_ERROR GetProductURL(char * buf, size_t bufSize) override;
    CHIP_ERROR GetProductLabel(char * buf, size_t bufSize) override;
    CHIP_ERROR GetHardwareVersionString(char * buf, size_t bufSize) override;
    CHIP_ERROR GetRotatingDeviceIdUniqueId(MutableByteSpan & uniqueIdSpan) override;
    CHIP_ERROR GetSerialNumber(char * buf, size_t bufSize) override;
    CHIP_ERROR GetManufacturingDate(uint16_t & year, uint8_t & month, uint8_t & day) override;
    CHIP_ERROR GetPartNumber(char * buf, size_t bufSize) override;
    CHIP_ERROR GetHardwareVersion(uint16_t & hardwareVersion) override;
#endif // CHIP_DEVICE_CONFIG_ENABLE_DEVICE_INSTANCE_INFO_PROVIDER

private:
#ifdef CONFIG_ENABLE_SET_CERT_DECLARATION_API
    ByteSpan mCD;
#endif // CONFIG_ENABLE_SET_CERT_DECLARATION_API
};

} // namespace DeviceLayer
} // namespace chip