src/platform/Linux/PosixConfig.cpp - third_party/github/project-chip/connectedhomeip - Git at Google

 /*
  *
  *    Copyright (c) 2020 Project CHIP Authors
  *    Copyright (c) 2019-2020 Google LLC.
  *    Copyright (c) 2018 Nest Labs, Inc.
  *    All rights reserved.
  *
  *    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.
  */

 /**
  *    @file
  *          Utilities for interacting with multiple file partitions and maps
  *          key-value config calls to the correct partition.
  */

 #include <platform/internal/CHIPDeviceLayerInternal.h>
 #include <platform/internal/testing/ConfigUnitTest.h>

 #include <core/CHIPEncoding.h>
 #include <platform/Linux/CHIPLinuxStorage.h>
 #include <platform/Linux/PosixConfig.h>
 #include <support/CodeUtils.h>

 namespace chip {
 namespace DeviceLayer {
 namespace Internal {

 static ChipLinuxStorage gChipLinuxFactoryStorage;
 static ChipLinuxStorage gChipLinuxConfigStorage;
 static ChipLinuxStorage gChipLinuxCountersStorage;

 // *** CAUTION ***: Changing the names or namespaces of these values will *break* existing devices.

 // NVS namespaces used to store device configuration information.
 const char PosixConfig::kConfigNamespace_ChipFactory[]  = "chip-factory";
 const char PosixConfig::kConfigNamespace_ChipConfig[]   = "chip-config";
 const char PosixConfig::kConfigNamespace_ChipCounters[] = "chip-counters";

 // Keys stored in the Chip-factory namespace
 const PosixConfig::Key PosixConfig::kConfigKey_SerialNum           = { kConfigNamespace_ChipFactory, "serial-num" };
 const PosixConfig::Key PosixConfig::kConfigKey_MfrDeviceId         = { kConfigNamespace_ChipFactory, "device-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_MfrDeviceCert       = { kConfigNamespace_ChipFactory, "device-cert" };
 const PosixConfig::Key PosixConfig::kConfigKey_MfrDeviceICACerts   = { kConfigNamespace_ChipFactory, "device-ca-certs" };
 const PosixConfig::Key PosixConfig::kConfigKey_MfrDevicePrivateKey = { kConfigNamespace_ChipFactory, "device-key" };
 const PosixConfig::Key PosixConfig::kConfigKey_ProductRevision     = { kConfigNamespace_ChipFactory, "product-rev" };
 const PosixConfig::Key PosixConfig::kConfigKey_ManufacturingDate   = { kConfigNamespace_ChipFactory, "mfg-date" };
 const PosixConfig::Key PosixConfig::kConfigKey_SetupPinCode        = { kConfigNamespace_ChipFactory, "pin-code" };
 const PosixConfig::Key PosixConfig::kConfigKey_SetupDiscriminator  = { kConfigNamespace_ChipFactory, "discriminator" };

 // Keys stored in the Chip-config namespace
 const PosixConfig::Key PosixConfig::kConfigKey_FabricId                    = { kConfigNamespace_ChipConfig, "fabric-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_ServiceConfig               = { kConfigNamespace_ChipConfig, "service-config" };
 const PosixConfig::Key PosixConfig::kConfigKey_PairedAccountId             = { kConfigNamespace_ChipConfig, "account-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_ServiceId                   = { kConfigNamespace_ChipConfig, "service-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_FabricSecret                = { kConfigNamespace_ChipConfig, "fabric-secret" };
 const PosixConfig::Key PosixConfig::kConfigKey_GroupKeyIndex               = { kConfigNamespace_ChipConfig, "group-key-index" };
 const PosixConfig::Key PosixConfig::kConfigKey_LastUsedEpochKeyId          = { kConfigNamespace_ChipConfig, "last-ek-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_FailSafeArmed               = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
 const PosixConfig::Key PosixConfig::kConfigKey_WiFiStationSecType          = { kConfigNamespace_ChipConfig, "sta-sec-type" };
 const PosixConfig::Key PosixConfig::kConfigKey_OperationalDeviceId         = { kConfigNamespace_ChipConfig, "op-device-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_OperationalDeviceCert       = { kConfigNamespace_ChipConfig, "op-device-cert" };
 const PosixConfig::Key PosixConfig::kConfigKey_OperationalDeviceICACerts   = { kConfigNamespace_ChipConfig, "op-device-ca-certs" };
 const PosixConfig::Key PosixConfig::kConfigKey_OperationalDevicePrivateKey = { kConfigNamespace_ChipConfig, "op-device-key" };
 const PosixConfig::Key PosixConfig::kConfigKey_RegulatoryLocation          = { kConfigNamespace_ChipConfig, "regulatory-location" };
 const PosixConfig::Key PosixConfig::kConfigKey_CountryCode                 = { kConfigNamespace_ChipConfig, "country-code" };
 const PosixConfig::Key PosixConfig::kConfigKey_Breadcrumb                  = { kConfigNamespace_ChipConfig, "breadcrumb" };

 // Prefix used for NVS keys that contain Chip group encryption keys.
 const char PosixConfig::kGroupKeyNamePrefix[] = "gk-";

 ChipLinuxStorage * PosixConfig::GetStorageForNamespace(Key key)
 {
     if (strcmp(key.Namespace, kConfigNamespace_ChipFactory) == 0)
         return &gChipLinuxFactoryStorage;

     if (strcmp(key.Namespace, kConfigNamespace_ChipConfig) == 0)
         return &gChipLinuxConfigStorage;

     if (strcmp(key.Namespace, kConfigNamespace_ChipCounters) == 0)
         return &gChipLinuxCountersStorage;

     return nullptr;
 }

 CHIP_ERROR PosixConfig::Init()
 {
     CHIP_ERROR err = CHIP_NO_ERROR;
     return err;
 }

 CHIP_ERROR PosixConfig::ReadConfigValue(Key key, bool & val)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;
     uint32_t intVal;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->ReadValue(key.Name, intVal);
     if (err == CHIP_ERROR_KEY_NOT_FOUND)
     {
         err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
     }
     SuccessOrExit(err);

     val = (intVal != 0);

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::ReadConfigValue(Key key, uint32_t & val)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->ReadValue(key.Name, val);
     if (err == CHIP_ERROR_KEY_NOT_FOUND)
     {
         err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
     }
     SuccessOrExit(err);

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::ReadConfigValue(Key key, uint64_t & val)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     // Special case the MfrDeviceId value, optionally allowing it to be read as a blob containing
     // a 64-bit big-endian integer, instead of a u64 value.
     if (key == kConfigKey_MfrDeviceId)
     {
         uint8_t deviceIdBytes[sizeof(uint64_t)];
         size_t deviceIdLen = sizeof(deviceIdBytes);
         size_t deviceIdOutLen;
         err = storage->ReadValueBin(key.Name, deviceIdBytes, deviceIdLen, deviceIdOutLen);
         if (err == CHIP_NO_ERROR)
         {
             VerifyOrExit(deviceIdOutLen == sizeof(deviceIdBytes), err = CHIP_ERROR_INCORRECT_STATE);
             val = Encoding::BigEndian::Get64(deviceIdBytes);
             ExitNow();
         }
     }

     err = storage->ReadValue(key.Name, val);
     if (err == CHIP_ERROR_KEY_NOT_FOUND)
     {
         err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
     }
     SuccessOrExit(err);

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::ReadConfigValueStr(Key key, char * buf, size_t bufSize, size_t & outLen)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->ReadValueStr(key.Name, buf, bufSize, outLen);
     if (err == CHIP_ERROR_KEY_NOT_FOUND)
     {
         outLen = 0;
         err    = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
     }
     else if (err == CHIP_ERROR_BUFFER_TOO_SMALL)
     {
         err = (buf == nullptr) ? CHIP_NO_ERROR : CHIP_ERROR_BUFFER_TOO_SMALL;
     }
     SuccessOrExit(err);

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::ReadConfigValueBin(Key key, uint8_t * buf, size_t bufSize, size_t & outLen)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->ReadValueBin(key.Name, buf, bufSize, outLen);
     if (err == CHIP_ERROR_KEY_NOT_FOUND)
     {
         outLen = 0;
         err    = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
     }
     else if (err == CHIP_ERROR_BUFFER_TOO_SMALL)
     {
         err = (buf == nullptr) ? CHIP_NO_ERROR : CHIP_ERROR_BUFFER_TOO_SMALL;
     }
     SuccessOrExit(err);

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::WriteConfigValue(Key key, bool val)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->WriteValue(key.Name, val);
     SuccessOrExit(err);

     // Commit the value to the persistent store.
     err = storage->Commit();
     SuccessOrExit(err);

     ChipLogProgress(DeviceLayer, "NVS set: %s/%s = %s", key.Namespace, key.Name, val ? "true" : "false");

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::WriteConfigValue(Key key, uint32_t val)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->WriteValue(key.Name, val);
     SuccessOrExit(err);

     // Commit the value to the persistent store.
     err = storage->Commit();
     SuccessOrExit(err);

     ChipLogProgress(DeviceLayer, "NVS set: %s/%s = %" PRIu32 " (0x%" PRIX32 ")", key.Namespace, key.Name, val, val);

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::WriteConfigValue(Key key, uint64_t val)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->WriteValue(key.Name, val);
     SuccessOrExit(err);

     // Commit the value to the persistent store.
     err = storage->Commit();
     SuccessOrExit(err);

     ChipLogProgress(DeviceLayer, "NVS set: %s/%s = %" PRIu64 " (0x%" PRIX64 ")", key.Namespace, key.Name, val, val);

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::WriteConfigValueStr(Key key, const char * str)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     if (str != nullptr)
     {
         storage = GetStorageForNamespace(key);
         VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

         err = storage->WriteValueStr(key.Name, str);
         SuccessOrExit(err);

         // Commit the value to the persistent store.
         err = storage->Commit();
         SuccessOrExit(err);

         ChipLogProgress(DeviceLayer, "NVS set: %s/%s = \"%s\"", key.Namespace, key.Name, str);
     }

     else
     {
         err = ClearConfigValue(key);
         SuccessOrExit(err);
     }

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::WriteConfigValueStr(Key key, const char * str, size_t strLen)
 {
 #if CHIP_CONFIG_MEMORY_MGMT_MALLOC
     CHIP_ERROR err;
     char * strCopy = nullptr;

     if (str != nullptr)
     {
         strCopy = strndup(str, strLen);
         VerifyOrExit(strCopy != nullptr, err = CHIP_ERROR_NO_MEMORY);
     }

     err = PosixConfig::WriteConfigValueStr(key, strCopy);

 exit:
     if (strCopy != nullptr)
     {
         free(strCopy);
     }
     return err;
 #else
 #error "Unsupported CHIP_CONFIG_MEMORY_MGMT configuration"
 #endif
 }

 CHIP_ERROR PosixConfig::WriteConfigValueBin(Key key, const uint8_t * data, size_t dataLen)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     if (data != nullptr)
     {
         storage = GetStorageForNamespace(key);
         VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

         err = storage->WriteValueBin(key.Name, data, dataLen);
         SuccessOrExit(err);

         // Commit the value to the persistent store.
         err = storage->Commit();
         SuccessOrExit(err);

         ChipLogProgress(DeviceLayer, "NVS set: %s/%s = (blob length %" PRId32 ")", key.Namespace, key.Name, dataLen);
     }
     else
     {
         err = ClearConfigValue(key);
         SuccessOrExit(err);
     }

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::ClearConfigValue(Key key)
 {
     CHIP_ERROR err;
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->ClearValue(key.Name);
     if (err == CHIP_ERROR_KEY_NOT_FOUND)
     {
         ExitNow(err = CHIP_NO_ERROR);
     }
     SuccessOrExit(err);

     // Commit the value to the persistent store.
     err = storage->Commit();
     SuccessOrExit(err);

     ChipLogProgress(DeviceLayer, "NVS erase: %s/%s", key.Namespace, key.Name);

 exit:
     return err;
 }

 bool PosixConfig::ConfigValueExists(Key key)
 {
     ChipLinuxStorage * storage;

     storage = GetStorageForNamespace(key);
     if (storage == nullptr)
         return false;

     return storage->HasValue(key.Name);
 }

 CHIP_ERROR PosixConfig::EnsureNamespace(const char * ns)
 {
     CHIP_ERROR err             = CHIP_NO_ERROR;
     ChipLinuxStorage * storage = nullptr;

     if (strcmp(ns, kConfigNamespace_ChipFactory) == 0)
     {
         storage = &gChipLinuxFactoryStorage;
         err     = storage->Init(CHIP_DEFAULT_FACTORY_PATH);
     }
     else if (strcmp(ns, kConfigNamespace_ChipConfig) == 0)
     {
         storage = &gChipLinuxConfigStorage;
         err     = storage->Init(CHIP_DEFAULT_CONFIG_PATH);
     }
     else if (strcmp(ns, kConfigNamespace_ChipCounters) == 0)
     {
         storage = &gChipLinuxCountersStorage;
         err     = storage->Init(CHIP_DEFAULT_DATA_PATH);
     }

     SuccessOrExit(err);

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::ClearNamespace(const char * ns)
 {
     CHIP_ERROR err             = CHIP_NO_ERROR;
     ChipLinuxStorage * storage = nullptr;

     if (strcmp(ns, kConfigNamespace_ChipConfig) == 0)
     {
         storage = &gChipLinuxConfigStorage;
     }
     else if (strcmp(ns, kConfigNamespace_ChipCounters) == 0)
     {
         storage = &gChipLinuxCountersStorage;
     }

     VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

     err = storage->ClearAll();
     if (err != CHIP_NO_ERROR)
     {
         ChipLogError(DeviceLayer, "Storage ClearAll failed: %s", ErrorStr(err));
     }
     SuccessOrExit(err);

     err = storage->Commit();
     if (err != CHIP_NO_ERROR)
     {
         ChipLogError(DeviceLayer, "Storage Commit failed: %s", ErrorStr(err));
     }

 exit:
     return err;
 }

 CHIP_ERROR PosixConfig::FactoryResetConfig()
 {
     CHIP_ERROR err = CHIP_NO_ERROR;
     ChipLinuxStorage * storage;

     ChipLogProgress(DeviceLayer, "Performing factory reset");

     storage = &gChipLinuxConfigStorage;
     if (storage == nullptr)
     {
         ChipLogError(DeviceLayer, "Storage get failed");
         err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
     }
     SuccessOrExit(err);

     err = storage->ClearAll();
     if (err != CHIP_NO_ERROR)
     {
         ChipLogError(DeviceLayer, "Storage ClearAll failed: %s", ErrorStr(err));
     }
     SuccessOrExit(err);

     err = storage->Commit();
     if (err != CHIP_NO_ERROR)
     {
         ChipLogError(DeviceLayer, "Storage Commit failed: %s", ErrorStr(err));
     }

 exit:
     return err;
 }

 void PosixConfig::RunConfigUnitTest()
 {
     // Run common unit test.
     ::chip::DeviceLayer::Internal::RunConfigUnitTest<PosixConfig>();
 }

 } // namespace Internal
 } // namespace DeviceLayer
 } // namespace chip
	/*
	*
	* Copyright (c) 2020 Project CHIP Authors
	* Copyright (c) 2019-2020 Google LLC.
	* Copyright (c) 2018 Nest Labs, Inc.
	* All rights reserved.
	*
	* 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.
	*/

	/**
	* @file
	* Utilities for interacting with multiple file partitions and maps
	* key-value config calls to the correct partition.
	*/

	#include <platform/internal/CHIPDeviceLayerInternal.h>
	#include <platform/internal/testing/ConfigUnitTest.h>

	#include <core/CHIPEncoding.h>
	#include <platform/Linux/CHIPLinuxStorage.h>
	#include <platform/Linux/PosixConfig.h>
	#include <support/CodeUtils.h>

	namespace chip {
	namespace DeviceLayer {
	namespace Internal {

	static ChipLinuxStorage gChipLinuxFactoryStorage;
	static ChipLinuxStorage gChipLinuxConfigStorage;
	static ChipLinuxStorage gChipLinuxCountersStorage;

	// * CAUTION : Changing the names or namespaces of these values will break* existing devices.

	// NVS namespaces used to store device configuration information.
	const char PosixConfig::kConfigNamespace_ChipFactory[] = "chip-factory";
	const char PosixConfig::kConfigNamespace_ChipConfig[] = "chip-config";
	const char PosixConfig::kConfigNamespace_ChipCounters[] = "chip-counters";

	// Keys stored in the Chip-factory namespace
	const PosixConfig::Key PosixConfig::kConfigKey_SerialNum = { kConfigNamespace_ChipFactory, "serial-num" };
	const PosixConfig::Key PosixConfig::kConfigKey_MfrDeviceId = { kConfigNamespace_ChipFactory, "device-id" };
	const PosixConfig::Key PosixConfig::kConfigKey_MfrDeviceCert = { kConfigNamespace_ChipFactory, "device-cert" };
	const PosixConfig::Key PosixConfig::kConfigKey_MfrDeviceICACerts = { kConfigNamespace_ChipFactory, "device-ca-certs" };
	const PosixConfig::Key PosixConfig::kConfigKey_MfrDevicePrivateKey = { kConfigNamespace_ChipFactory, "device-key" };
	const PosixConfig::Key PosixConfig::kConfigKey_ProductRevision = { kConfigNamespace_ChipFactory, "product-rev" };
	const PosixConfig::Key PosixConfig::kConfigKey_ManufacturingDate = { kConfigNamespace_ChipFactory, "mfg-date" };
	const PosixConfig::Key PosixConfig::kConfigKey_SetupPinCode = { kConfigNamespace_ChipFactory, "pin-code" };
	const PosixConfig::Key PosixConfig::kConfigKey_SetupDiscriminator = { kConfigNamespace_ChipFactory, "discriminator" };

	// Keys stored in the Chip-config namespace
	const PosixConfig::Key PosixConfig::kConfigKey_FabricId = { kConfigNamespace_ChipConfig, "fabric-id" };
	const PosixConfig::Key PosixConfig::kConfigKey_ServiceConfig = { kConfigNamespace_ChipConfig, "service-config" };
	const PosixConfig::Key PosixConfig::kConfigKey_PairedAccountId = { kConfigNamespace_ChipConfig, "account-id" };
	const PosixConfig::Key PosixConfig::kConfigKey_ServiceId = { kConfigNamespace_ChipConfig, "service-id" };
	const PosixConfig::Key PosixConfig::kConfigKey_FabricSecret = { kConfigNamespace_ChipConfig, "fabric-secret" };
	const PosixConfig::Key PosixConfig::kConfigKey_GroupKeyIndex = { kConfigNamespace_ChipConfig, "group-key-index" };
	const PosixConfig::Key PosixConfig::kConfigKey_LastUsedEpochKeyId = { kConfigNamespace_ChipConfig, "last-ek-id" };
	const PosixConfig::Key PosixConfig::kConfigKey_FailSafeArmed = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
	const PosixConfig::Key PosixConfig::kConfigKey_WiFiStationSecType = { kConfigNamespace_ChipConfig, "sta-sec-type" };
	const PosixConfig::Key PosixConfig::kConfigKey_OperationalDeviceId = { kConfigNamespace_ChipConfig, "op-device-id" };
	const PosixConfig::Key PosixConfig::kConfigKey_OperationalDeviceCert = { kConfigNamespace_ChipConfig, "op-device-cert" };
	const PosixConfig::Key PosixConfig::kConfigKey_OperationalDeviceICACerts = { kConfigNamespace_ChipConfig, "op-device-ca-certs" };
	const PosixConfig::Key PosixConfig::kConfigKey_OperationalDevicePrivateKey = { kConfigNamespace_ChipConfig, "op-device-key" };
	const PosixConfig::Key PosixConfig::kConfigKey_RegulatoryLocation = { kConfigNamespace_ChipConfig, "regulatory-location" };
	const PosixConfig::Key PosixConfig::kConfigKey_CountryCode = { kConfigNamespace_ChipConfig, "country-code" };
	const PosixConfig::Key PosixConfig::kConfigKey_Breadcrumb = { kConfigNamespace_ChipConfig, "breadcrumb" };

	// Prefix used for NVS keys that contain Chip group encryption keys.
	const char PosixConfig::kGroupKeyNamePrefix[] = "gk-";

	ChipLinuxStorage * PosixConfig::GetStorageForNamespace(Key key)
	{
	if (strcmp(key.Namespace, kConfigNamespace_ChipFactory) == 0)
	return &gChipLinuxFactoryStorage;

	if (strcmp(key.Namespace, kConfigNamespace_ChipConfig) == 0)
	return &gChipLinuxConfigStorage;

	if (strcmp(key.Namespace, kConfigNamespace_ChipCounters) == 0)
	return &gChipLinuxCountersStorage;

	return nullptr;
	}

	CHIP_ERROR PosixConfig::Init()
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	return err;
	}

	CHIP_ERROR PosixConfig::ReadConfigValue(Key key, bool & val)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;
	uint32_t intVal;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->ReadValue(key.Name, intVal);
	if (err == CHIP_ERROR_KEY_NOT_FOUND)
	{
	err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
	}
	SuccessOrExit(err);

	val = (intVal != 0);

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::ReadConfigValue(Key key, uint32_t & val)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->ReadValue(key.Name, val);
	if (err == CHIP_ERROR_KEY_NOT_FOUND)
	{
	err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
	}
	SuccessOrExit(err);

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::ReadConfigValue(Key key, uint64_t & val)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	// Special case the MfrDeviceId value, optionally allowing it to be read as a blob containing
	// a 64-bit big-endian integer, instead of a u64 value.
	if (key == kConfigKey_MfrDeviceId)
	{
	uint8_t deviceIdBytes[sizeof(uint64_t)];
	size_t deviceIdLen = sizeof(deviceIdBytes);
	size_t deviceIdOutLen;
	err = storage->ReadValueBin(key.Name, deviceIdBytes, deviceIdLen, deviceIdOutLen);
	if (err == CHIP_NO_ERROR)
	{
	VerifyOrExit(deviceIdOutLen == sizeof(deviceIdBytes), err = CHIP_ERROR_INCORRECT_STATE);
	val = Encoding::BigEndian::Get64(deviceIdBytes);
	ExitNow();
	}
	}

	err = storage->ReadValue(key.Name, val);
	if (err == CHIP_ERROR_KEY_NOT_FOUND)
	{
	err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
	}
	SuccessOrExit(err);

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::ReadConfigValueStr(Key key, char * buf, size_t bufSize, size_t & outLen)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->ReadValueStr(key.Name, buf, bufSize, outLen);
	if (err == CHIP_ERROR_KEY_NOT_FOUND)
	{
	outLen = 0;
	err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
	}
	else if (err == CHIP_ERROR_BUFFER_TOO_SMALL)
	{
	err = (buf == nullptr) ? CHIP_NO_ERROR : CHIP_ERROR_BUFFER_TOO_SMALL;
	}
	SuccessOrExit(err);

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::ReadConfigValueBin(Key key, uint8_t * buf, size_t bufSize, size_t & outLen)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->ReadValueBin(key.Name, buf, bufSize, outLen);
	if (err == CHIP_ERROR_KEY_NOT_FOUND)
	{
	outLen = 0;
	err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
	}
	else if (err == CHIP_ERROR_BUFFER_TOO_SMALL)
	{
	err = (buf == nullptr) ? CHIP_NO_ERROR : CHIP_ERROR_BUFFER_TOO_SMALL;
	}
	SuccessOrExit(err);

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::WriteConfigValue(Key key, bool val)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->WriteValue(key.Name, val);
	SuccessOrExit(err);

	// Commit the value to the persistent store.
	err = storage->Commit();
	SuccessOrExit(err);

	ChipLogProgress(DeviceLayer, "NVS set: %s/%s = %s", key.Namespace, key.Name, val ? "true" : "false");

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::WriteConfigValue(Key key, uint32_t val)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->WriteValue(key.Name, val);
	SuccessOrExit(err);

	// Commit the value to the persistent store.
	err = storage->Commit();
	SuccessOrExit(err);

	ChipLogProgress(DeviceLayer, "NVS set: %s/%s = %" PRIu32 " (0x%" PRIX32 ")", key.Namespace, key.Name, val, val);

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::WriteConfigValue(Key key, uint64_t val)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->WriteValue(key.Name, val);
	SuccessOrExit(err);

	// Commit the value to the persistent store.
	err = storage->Commit();
	SuccessOrExit(err);

	ChipLogProgress(DeviceLayer, "NVS set: %s/%s = %" PRIu64 " (0x%" PRIX64 ")", key.Namespace, key.Name, val, val);

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::WriteConfigValueStr(Key key, const char * str)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	if (str != nullptr)
	{
	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->WriteValueStr(key.Name, str);
	SuccessOrExit(err);

	// Commit the value to the persistent store.
	err = storage->Commit();
	SuccessOrExit(err);

	ChipLogProgress(DeviceLayer, "NVS set: %s/%s = \"%s\"", key.Namespace, key.Name, str);
	}

	else
	{
	err = ClearConfigValue(key);
	SuccessOrExit(err);
	}

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::WriteConfigValueStr(Key key, const char * str, size_t strLen)
	{
	#if CHIP_CONFIG_MEMORY_MGMT_MALLOC
	CHIP_ERROR err;
	char * strCopy = nullptr;

	if (str != nullptr)
	{
	strCopy = strndup(str, strLen);
	VerifyOrExit(strCopy != nullptr, err = CHIP_ERROR_NO_MEMORY);
	}

	err = PosixConfig::WriteConfigValueStr(key, strCopy);

	exit:
	if (strCopy != nullptr)
	{
	free(strCopy);
	}
	return err;
	#else
	#error "Unsupported CHIP_CONFIG_MEMORY_MGMT configuration"
	#endif
	}

	CHIP_ERROR PosixConfig::WriteConfigValueBin(Key key, const uint8_t * data, size_t dataLen)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	if (data != nullptr)
	{
	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->WriteValueBin(key.Name, data, dataLen);
	SuccessOrExit(err);

	// Commit the value to the persistent store.
	err = storage->Commit();
	SuccessOrExit(err);

	ChipLogProgress(DeviceLayer, "NVS set: %s/%s = (blob length %" PRId32 ")", key.Namespace, key.Name, dataLen);
	}
	else
	{
	err = ClearConfigValue(key);
	SuccessOrExit(err);
	}

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::ClearConfigValue(Key key)
	{
	CHIP_ERROR err;
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->ClearValue(key.Name);
	if (err == CHIP_ERROR_KEY_NOT_FOUND)
	{
	ExitNow(err = CHIP_NO_ERROR);
	}
	SuccessOrExit(err);

	// Commit the value to the persistent store.
	err = storage->Commit();
	SuccessOrExit(err);

	ChipLogProgress(DeviceLayer, "NVS erase: %s/%s", key.Namespace, key.Name);

	exit:
	return err;
	}

	bool PosixConfig::ConfigValueExists(Key key)
	{
	ChipLinuxStorage * storage;

	storage = GetStorageForNamespace(key);
	if (storage == nullptr)
	return false;

	return storage->HasValue(key.Name);
	}

	CHIP_ERROR PosixConfig::EnsureNamespace(const char * ns)
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	ChipLinuxStorage * storage = nullptr;

	if (strcmp(ns, kConfigNamespace_ChipFactory) == 0)
	{
	storage = &gChipLinuxFactoryStorage;
	err = storage->Init(CHIP_DEFAULT_FACTORY_PATH);
	}
	else if (strcmp(ns, kConfigNamespace_ChipConfig) == 0)
	{
	storage = &gChipLinuxConfigStorage;
	err = storage->Init(CHIP_DEFAULT_CONFIG_PATH);
	}
	else if (strcmp(ns, kConfigNamespace_ChipCounters) == 0)
	{
	storage = &gChipLinuxCountersStorage;
	err = storage->Init(CHIP_DEFAULT_DATA_PATH);
	}

	SuccessOrExit(err);

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::ClearNamespace(const char * ns)
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	ChipLinuxStorage * storage = nullptr;

	if (strcmp(ns, kConfigNamespace_ChipConfig) == 0)
	{
	storage = &gChipLinuxConfigStorage;
	}
	else if (strcmp(ns, kConfigNamespace_ChipCounters) == 0)
	{
	storage = &gChipLinuxCountersStorage;
	}

	VerifyOrExit(storage != nullptr, err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND);

	err = storage->ClearAll();
	if (err != CHIP_NO_ERROR)
	{
	ChipLogError(DeviceLayer, "Storage ClearAll failed: %s", ErrorStr(err));
	}
	SuccessOrExit(err);

	err = storage->Commit();
	if (err != CHIP_NO_ERROR)
	{
	ChipLogError(DeviceLayer, "Storage Commit failed: %s", ErrorStr(err));
	}

	exit:
	return err;
	}

	CHIP_ERROR PosixConfig::FactoryResetConfig()
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	ChipLinuxStorage * storage;

	ChipLogProgress(DeviceLayer, "Performing factory reset");

	storage = &gChipLinuxConfigStorage;
	if (storage == nullptr)
	{
	ChipLogError(DeviceLayer, "Storage get failed");
	err = CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
	}
	SuccessOrExit(err);

	err = storage->ClearAll();
	if (err != CHIP_NO_ERROR)
	{
	ChipLogError(DeviceLayer, "Storage ClearAll failed: %s", ErrorStr(err));
	}
	SuccessOrExit(err);

	err = storage->Commit();
	if (err != CHIP_NO_ERROR)
	{
	ChipLogError(DeviceLayer, "Storage Commit failed: %s", ErrorStr(err));
	}

	exit:
	return err;
	}

	void PosixConfig::RunConfigUnitTest()
	{
	// Run common unit test.
	::chip::DeviceLayer::Internal::RunConfigUnitTest<PosixConfig>();
	}

	} // namespace Internal
	} // namespace DeviceLayer
	} // namespace chip