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/*
*
* 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/DeviceInstanceInfoProvider.h>
#include <system/SystemError.h>
#include <zephyr/drivers/flash.h>
#include <zephyr/storage/flash_map.h>
#include "FactoryDataParser.h"
namespace chip {
namespace DeviceLayer {
__attribute__((section(".bss"))) static uint8_t mFactoryDataBuffer[FIXED_PARTITION_SIZE(factory_partition)];
struct InternalFlashFactoryData
{
CHIP_ERROR GetFactoryDataPartition(uint8_t *& data, size_t & dataSize)
{
data = reinterpret_cast<uint8_t *>(FIXED_PARTITION_OFFSET(factory_partition));
dataSize = FIXED_PARTITION_SIZE(factory_partition);
return CHIP_NO_ERROR;
}
CHIP_ERROR ProtectFactoryDataPartitionAgainstWrite() { return CHIP_ERROR_NOT_IMPLEMENTED; }
};
struct ExternalFlashFactoryData
{
CHIP_ERROR GetFactoryDataPartition(uint8_t *& data, size_t & dataSize)
{
int ret = flash_read(mFlashDevice, FIXED_PARTITION_OFFSET(factory_partition), mFactoryDataBuffer,
FIXED_PARTITION_SIZE(factory_partition));
if (ret != 0)
{
return CHIP_ERROR_READ_FAILED;
}
data = mFactoryDataBuffer;
dataSize = FIXED_PARTITION_SIZE(factory_partition);
return CHIP_NO_ERROR;
}
CHIP_ERROR ProtectFactoryDataPartitionAgainstWrite() { return CHIP_ERROR_NOT_IMPLEMENTED; }
const struct device * mFlashDevice = DEVICE_DT_GET(DT_CHOSEN(zephyr_flash_controller));
};
template <class FlashFactoryData>
class FactoryDataProvider : public chip::Credentials::DeviceAttestationCredentialsProvider,
public CommissionableDataProvider,
public DeviceInstanceInfoProvider
{
public:
CHIP_ERROR Init();
// ===== 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;
// ===== Members functions that implement the CommissionableDataProvider
CHIP_ERROR GetSetupDiscriminator(uint16_t & setupDiscriminator) override;
CHIP_ERROR SetSetupDiscriminator(uint16_t setupDiscriminator) override;
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;
CHIP_ERROR SetSetupPasscode(uint32_t setupPasscode) override;
// ===== Members functions that implement the DeviceInstanceInfoProvider
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 GetPartNumber(char * buf, size_t bufSize) override;
CHIP_ERROR GetProductURL(char * buf, size_t bufSize) override;
CHIP_ERROR GetProductLabel(char * buf, size_t bufSize) 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 GetHardwareVersion(uint16_t & hardwareVersion) override;
CHIP_ERROR GetHardwareVersionString(char * buf, size_t bufSize) override;
CHIP_ERROR GetRotatingDeviceIdUniqueId(MutableByteSpan & uniqueIdSpan) override;
// ===== Members functions that are platform-specific
CHIP_ERROR GetEnableKey(MutableByteSpan & enableKey);
private:
static constexpr uint16_t kFactoryDataPartitionSize = FIXED_PARTITION_SIZE(factory_partition);
static constexpr uint32_t kFactoryDataPartitionAddress = FIXED_PARTITION_OFFSET(factory_partition);
static constexpr uint8_t kDACPrivateKeyLength = 32;
static constexpr uint8_t kDACPublicKeyLength = 65;
struct FactoryData mFactoryData;
FlashFactoryData mFlashFactoryData;
};
} // namespace DeviceLayer
} // namespace chip