libpldmresponder/bios.cpp - openbmc/pldm - Gitiles

 #include "bios.hpp"

 #include "common/utils.hpp"

 #include <time.h>

 #include <phosphor-logging/lg2.hpp>

 #include <array>
 #include <chrono>
 #include <ctime>
 #include <stdexcept>
 #include <string>
 #include <variant>
 #include <vector>

 PHOSPHOR_LOG2_USING;

 using namespace pldm::utils;

 namespace pldm
 {
 namespace responder
 {
 namespace utils
 {
 void epochToBCDTime(uint64_t timeSec, uint8_t& seconds, uint8_t& minutes,
                     uint8_t& hours, uint8_t& day, uint8_t& month,
                     uint16_t& year)
 {
     auto t = time_t(timeSec);
     auto time = localtime(&t);

     seconds = pldm::utils::decimalToBcd(time->tm_sec);
     minutes = pldm::utils::decimalToBcd(time->tm_min);
     hours = pldm::utils::decimalToBcd(time->tm_hour);
     day = pldm::utils::decimalToBcd(time->tm_mday);
     month = pldm::utils::decimalToBcd(time->tm_mon +
                                       1); // The number of months in the range
                                           // 0 to 11.PLDM expects range 1 to 12
     year = pldm::utils::decimalToBcd(time->tm_year +
                                      1900); // The number of years since 1900
 }

 std::time_t timeToEpoch(uint8_t seconds, uint8_t minutes, uint8_t hours,
                         uint8_t day, uint8_t month, uint16_t year)
 {
     struct std::tm stm;

     stm.tm_year = year - 1900;
     stm.tm_mon = month - 1;
     stm.tm_mday = day;
     stm.tm_hour = hours;
     stm.tm_min = minutes;
     stm.tm_sec = seconds;
     stm.tm_isdst = -1;

     // It will get the time in seconds since
     // Epoch, 1970.1.1 00:00:00 +0000,UTC.
     return timegm(&stm);
 }

 } // namespace utils

 namespace bios
 {
 using EpochTimeUS = uint64_t;

 DBusHandler dbusHandler;

 Handler::Handler(
     int fd, uint8_t eid, pldm::InstanceIdDb* instanceIdDb,
     pldm::requester::Handler<pldm::requester::Request>* handler,
     pldm::responder::platform_config::Handler* platformConfigHandler,
     pldm::responder::bios::Callback requestPLDMServiceName) :
     biosConfig(BIOS_JSONS_DIR, BIOS_TABLES_DIR, &dbusHandler, fd, eid,
                instanceIdDb, handler, platformConfigHandler,
                requestPLDMServiceName)
 {
     handlers.emplace(
         PLDM_SET_DATE_TIME,
         [this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
         return this->setDateTime(request, payloadLength);
     });
     handlers.emplace(
         PLDM_GET_DATE_TIME,
         [this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
         return this->getDateTime(request, payloadLength);
     });
     handlers.emplace(
         PLDM_GET_BIOS_TABLE,
         [this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
         return this->getBIOSTable(request, payloadLength);
     });
     handlers.emplace(
         PLDM_SET_BIOS_TABLE,
         [this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
         return this->setBIOSTable(request, payloadLength);
     });
     handlers.emplace(
         PLDM_GET_BIOS_ATTRIBUTE_CURRENT_VALUE_BY_HANDLE,
         [this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
         return this->getBIOSAttributeCurrentValueByHandle(request,
                                                           payloadLength);
     });
     handlers.emplace(
         PLDM_SET_BIOS_ATTRIBUTE_CURRENT_VALUE,
         [this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
         return this->setBIOSAttributeCurrentValue(request, payloadLength);
     });
 }

 Response Handler::getDateTime(const pldm_msg* request, size_t /*payloadLength*/)
 {
     uint8_t seconds = 0;
     uint8_t minutes = 0;
     uint8_t hours = 0;
     uint8_t day = 0;
     uint8_t month = 0;
     uint16_t year = 0;

     constexpr auto timeInterface = "xyz.openbmc_project.Time.EpochTime";
     constexpr auto bmcTimePath = "/xyz/openbmc_project/time/bmc";
     Response response(sizeof(pldm_msg_hdr) + PLDM_GET_DATE_TIME_RESP_BYTES, 0);
     auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());
     EpochTimeUS timeUsec;

     try
     {
         timeUsec = pldm::utils::DBusHandler().getDbusProperty<EpochTimeUS>(
             bmcTimePath, "Elapsed", timeInterface);
     }
     catch (const sdbusplus::exception_t& e)
     {
         error(
             "Error getting time from Elapsed property at '{PATH}' on '{INTERFACE}': {ERROR}",
             "PATH", bmcTimePath, "INTERFACE", timeInterface, "ERROR", e);
         return CmdHandler::ccOnlyResponse(request, PLDM_ERROR);
     }

     uint64_t timeSec = std::chrono::duration_cast<std::chrono::seconds>(
                            std::chrono::microseconds(timeUsec))
                            .count();

     pldm::responder::utils::epochToBCDTime(timeSec, seconds, minutes, hours,
                                            day, month, year);

     auto rc = encode_get_date_time_resp(request->hdr.instance_id, PLDM_SUCCESS,
                                         seconds, minutes, hours, day, month,
                                         year, responsePtr);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     return response;
 }

 Response Handler::setDateTime(const pldm_msg* request, size_t payloadLength)
 {
     uint8_t seconds = 0;
     uint8_t minutes = 0;
     uint8_t hours = 0;
     uint8_t day = 0;
     uint8_t month = 0;
     uint16_t year = 0;
     std::time_t timeSec;

     constexpr auto timeSyncPath = "/xyz/openbmc_project/time/sync_method";
     constexpr auto timeSyncInterface =
         "xyz.openbmc_project.Time.Synchronization";
     constexpr auto timeSyncProperty = "TimeSyncMethod";

     // The time is correct on BMC when in NTP mode, so we do not want to
     // try and set the time again and cause potential time drifts.
     try
     {
         auto propVal = pldm::utils::DBusHandler().getDbusPropertyVariant(
             timeSyncPath, timeSyncProperty, timeSyncInterface);
         const auto& mode = std::get<std::string>(propVal);

         if (mode == "xyz.openbmc_project.Time.Synchronization.Method.NTP")
         {
             return ccOnlyResponse(request, PLDM_SUCCESS);
         }
     }
     catch (const std::exception& e)
     {
         error(
             "Error getting the time sync property, PATH={TIME_SYNC_PATH} INTERFACE={SYNC_INTERFACE} PROPERTY={SYNC_PROP} ERROR={ERR_EXCEP}",
             "TIME_SYNC_PATH", timeSyncPath, "SYNC_INTERFACE", timeSyncInterface,
             "SYNC_PROP", timeSyncProperty, "ERR_EXCEP", e.what());
     }

     constexpr auto setTimeInterface = "xyz.openbmc_project.Time.EpochTime";
     constexpr auto setTimePath = "/xyz/openbmc_project/time/bmc";
     constexpr auto timeSetPro = "Elapsed";

     auto rc = decode_set_date_time_req(request, payloadLength, &seconds,
                                        &minutes, &hours, &day, &month, &year);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }
     timeSec = pldm::responder::utils::timeToEpoch(seconds, minutes, hours, day,
                                                   month, year);
     uint64_t timeUsec = std::chrono::duration_cast<std::chrono::microseconds>(
                             std::chrono::seconds(timeSec))
                             .count();
     PropertyValue value{timeUsec};
     try
     {
         DBusMapping dbusMapping{setTimePath, setTimeInterface, timeSetPro,
                                 "uint64_t"};
         pldm::utils::DBusHandler().setDbusProperty(dbusMapping, value);
     }
     catch (const std::exception& e)
     {
         error(
             "Error Setting time,PATH={SET_TIME_PATH} TIME INTERFACE={TIME_INTERFACE} ERROR={ERR_EXCEP}",
             "SET_TIME_PATH", setTimePath, "TIME_INTERFACE", setTimeInterface,
             "ERR_EXCEP", e.what());
         return ccOnlyResponse(request, PLDM_ERROR);
     }

     return ccOnlyResponse(request, PLDM_SUCCESS);
 }

 Response Handler::getBIOSTable(const pldm_msg* request, size_t payloadLength)
 {
     uint32_t transferHandle{};
     uint8_t transferOpFlag{};
     uint8_t tableType{};

     auto rc = decode_get_bios_table_req(request, payloadLength, &transferHandle,
                                         &transferOpFlag, &tableType);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     auto table =
         biosConfig.getBIOSTable(static_cast<pldm_bios_table_types>(tableType));
     if (!table)
     {
         return ccOnlyResponse(request, PLDM_BIOS_TABLE_UNAVAILABLE);
     }

     Response response(sizeof(pldm_msg_hdr) +
                       PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES + table->size());
     auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());

     rc = encode_get_bios_table_resp(
         request->hdr.instance_id, PLDM_SUCCESS, 0 /* nxtTransferHandle */,
         PLDM_START_AND_END, table->data(), response.size(), responsePtr);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     return response;
 }

 Response Handler::setBIOSTable(const pldm_msg* request, size_t payloadLength)
 {
     uint32_t transferHandle{};
     uint8_t transferOpFlag{};
     uint8_t tableType{};
     struct variable_field field;

     auto rc = decode_set_bios_table_req(request, payloadLength, &transferHandle,
                                         &transferOpFlag, &tableType, &field);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     Table table(field.ptr, field.ptr + field.length);
     rc = biosConfig.setBIOSTable(tableType, table);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     Response response(sizeof(pldm_msg_hdr) + PLDM_SET_BIOS_TABLE_RESP_BYTES);
     auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());

     rc = encode_set_bios_table_resp(request->hdr.instance_id, PLDM_SUCCESS,
                                     0 /* nxtTransferHandle */, responsePtr);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     return response;
 }

 Response Handler::getBIOSAttributeCurrentValueByHandle(const pldm_msg* request,
                                                        size_t payloadLength)
 {
     uint32_t transferHandle;
     uint8_t transferOpFlag;
     uint16_t attributeHandle;

     auto rc = decode_get_bios_attribute_current_value_by_handle_req(
         request, payloadLength, &transferHandle, &transferOpFlag,
         &attributeHandle);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     auto table = biosConfig.getBIOSTable(PLDM_BIOS_ATTR_VAL_TABLE);
     if (!table)
     {
         return ccOnlyResponse(request, PLDM_BIOS_TABLE_UNAVAILABLE);
     }

     auto entry = pldm_bios_table_attr_value_find_by_handle(
         table->data(), table->size(), attributeHandle);
     if (entry == nullptr)
     {
         return ccOnlyResponse(request, PLDM_INVALID_BIOS_ATTR_HANDLE);
     }

     auto entryLength = pldm_bios_table_attr_value_entry_length(entry);
     Response response(sizeof(pldm_msg_hdr) +
                           PLDM_GET_BIOS_ATTR_CURR_VAL_BY_HANDLE_MIN_RESP_BYTES +
                           entryLength,
                       0);
     auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());
     rc = encode_get_bios_current_value_by_handle_resp(
         request->hdr.instance_id, PLDM_SUCCESS, 0, PLDM_START_AND_END,
         reinterpret_cast<const uint8_t*>(entry), entryLength, responsePtr);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     return response;
 }

 Response Handler::setBIOSAttributeCurrentValue(const pldm_msg* request,
                                                size_t payloadLength)
 {
     uint32_t transferHandle;
     uint8_t transferOpFlag;
     variable_field attributeField;

     auto rc = decode_set_bios_attribute_current_value_req(
         request, payloadLength, &transferHandle, &transferOpFlag,
         &attributeField);
     if (rc != PLDM_SUCCESS)
     {
         return ccOnlyResponse(request, rc);
     }

     rc = biosConfig.setAttrValue(attributeField.ptr, attributeField.length,
                                  false);

     Response response(
         sizeof(pldm_msg_hdr) + PLDM_SET_BIOS_ATTR_CURR_VAL_RESP_BYTES, 0);
     auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());

     encode_set_bios_attribute_current_value_resp(request->hdr.instance_id, rc,
                                                  0, responsePtr);

     return response;
 }

 } // namespace bios
 } // namespace responder
 } // namespace pldm
	#include "bios.hpp"

	#include "common/utils.hpp"

	#include <time.h>

	#include <phosphor-logging/lg2.hpp>

	#include <array>
	#include <chrono>
	#include <ctime>
	#include <stdexcept>
	#include <string>
	#include <variant>
	#include <vector>

	PHOSPHOR_LOG2_USING;

	using namespace pldm::utils;

	namespace pldm
	{
	namespace responder
	{
	namespace utils
	{
	void epochToBCDTime(uint64_t timeSec, uint8_t& seconds, uint8_t& minutes,
	uint8_t& hours, uint8_t& day, uint8_t& month,
	uint16_t& year)
	{
	auto t = time_t(timeSec);
	auto time = localtime(&t);

	seconds = pldm::utils::decimalToBcd(time->tm_sec);
	minutes = pldm::utils::decimalToBcd(time->tm_min);
	hours = pldm::utils::decimalToBcd(time->tm_hour);
	day = pldm::utils::decimalToBcd(time->tm_mday);
	month = pldm::utils::decimalToBcd(time->tm_mon +
	1); // The number of months in the range
	// 0 to 11.PLDM expects range 1 to 12
	year = pldm::utils::decimalToBcd(time->tm_year +
	1900); // The number of years since 1900
	}

	std::time_t timeToEpoch(uint8_t seconds, uint8_t minutes, uint8_t hours,
	uint8_t day, uint8_t month, uint16_t year)
	{
	struct std::tm stm;

	stm.tm_year = year - 1900;
	stm.tm_mon = month - 1;
	stm.tm_mday = day;
	stm.tm_hour = hours;
	stm.tm_min = minutes;
	stm.tm_sec = seconds;
	stm.tm_isdst = -1;

	// It will get the time in seconds since
	// Epoch, 1970.1.1 00:00:00 +0000,UTC.
	return timegm(&stm);
	}

	} // namespace utils

	namespace bios
	{
	using EpochTimeUS = uint64_t;

	DBusHandler dbusHandler;

	Handler::Handler(
	int fd, uint8_t eid, pldm::InstanceIdDb* instanceIdDb,
	pldm::requester::Handler<pldm::requester::Request>* handler,
	pldm::responder::platform_config::Handler* platformConfigHandler,
	pldm::responder::bios::Callback requestPLDMServiceName) :
	biosConfig(BIOS_JSONS_DIR, BIOS_TABLES_DIR, &dbusHandler, fd, eid,
	instanceIdDb, handler, platformConfigHandler,
	requestPLDMServiceName)
	{
	handlers.emplace(
	PLDM_SET_DATE_TIME,
	[this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
	return this->setDateTime(request, payloadLength);
	});
	handlers.emplace(
	PLDM_GET_DATE_TIME,
	[this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
	return this->getDateTime(request, payloadLength);
	});
	handlers.emplace(
	PLDM_GET_BIOS_TABLE,
	[this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
	return this->getBIOSTable(request, payloadLength);
	});
	handlers.emplace(
	PLDM_SET_BIOS_TABLE,
	[this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
	return this->setBIOSTable(request, payloadLength);
	});
	handlers.emplace(
	PLDM_GET_BIOS_ATTRIBUTE_CURRENT_VALUE_BY_HANDLE,
	[this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
	return this->getBIOSAttributeCurrentValueByHandle(request,
	payloadLength);
	});
	handlers.emplace(
	PLDM_SET_BIOS_ATTRIBUTE_CURRENT_VALUE,
	[this](pldm_tid_t, const pldm_msg* request, size_t payloadLength) {
	return this->setBIOSAttributeCurrentValue(request, payloadLength);
	});
	}

	Response Handler::getDateTime(const pldm_msg* request, size_t /payloadLength/)
	{
	uint8_t seconds = 0;
	uint8_t minutes = 0;
	uint8_t hours = 0;
	uint8_t day = 0;
	uint8_t month = 0;
	uint16_t year = 0;

	constexpr auto timeInterface = "xyz.openbmc_project.Time.EpochTime";
	constexpr auto bmcTimePath = "/xyz/openbmc_project/time/bmc";
	Response response(sizeof(pldm_msg_hdr) + PLDM_GET_DATE_TIME_RESP_BYTES, 0);
	auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());
	EpochTimeUS timeUsec;

	try
	{
	timeUsec = pldm::utils::DBusHandler().getDbusProperty<EpochTimeUS>(
	bmcTimePath, "Elapsed", timeInterface);
	}
	catch (const sdbusplus::exception_t& e)
	{
	error(
	"Error getting time from Elapsed property at '{PATH}' on '{INTERFACE}': {ERROR}",
	"PATH", bmcTimePath, "INTERFACE", timeInterface, "ERROR", e);
	return CmdHandler::ccOnlyResponse(request, PLDM_ERROR);
	}

	uint64_t timeSec = std::chrono::duration_cast<std::chrono::seconds>(
	std::chrono::microseconds(timeUsec))
	.count();

	pldm::responder::utils::epochToBCDTime(timeSec, seconds, minutes, hours,
	day, month, year);

	auto rc = encode_get_date_time_resp(request->hdr.instance_id, PLDM_SUCCESS,
	seconds, minutes, hours, day, month,
	year, responsePtr);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	return response;
	}

	Response Handler::setDateTime(const pldm_msg* request, size_t payloadLength)
	{
	uint8_t seconds = 0;
	uint8_t minutes = 0;
	uint8_t hours = 0;
	uint8_t day = 0;
	uint8_t month = 0;
	uint16_t year = 0;
	std::time_t timeSec;

	constexpr auto timeSyncPath = "/xyz/openbmc_project/time/sync_method";
	constexpr auto timeSyncInterface =
	"xyz.openbmc_project.Time.Synchronization";
	constexpr auto timeSyncProperty = "TimeSyncMethod";

	// The time is correct on BMC when in NTP mode, so we do not want to
	// try and set the time again and cause potential time drifts.
	try
	{
	auto propVal = pldm::utils::DBusHandler().getDbusPropertyVariant(
	timeSyncPath, timeSyncProperty, timeSyncInterface);
	const auto& mode = std::get<std::string>(propVal);

	if (mode == "xyz.openbmc_project.Time.Synchronization.Method.NTP")
	{
	return ccOnlyResponse(request, PLDM_SUCCESS);
	}
	}
	catch (const std::exception& e)
	{
	error(
	"Error getting the time sync property, PATH={TIME_SYNC_PATH} INTERFACE={SYNC_INTERFACE} PROPERTY={SYNC_PROP} ERROR={ERR_EXCEP}",
	"TIME_SYNC_PATH", timeSyncPath, "SYNC_INTERFACE", timeSyncInterface,
	"SYNC_PROP", timeSyncProperty, "ERR_EXCEP", e.what());
	}

	constexpr auto setTimeInterface = "xyz.openbmc_project.Time.EpochTime";
	constexpr auto setTimePath = "/xyz/openbmc_project/time/bmc";
	constexpr auto timeSetPro = "Elapsed";

	auto rc = decode_set_date_time_req(request, payloadLength, &seconds,
	&minutes, &hours, &day, &month, &year);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}
	timeSec = pldm::responder::utils::timeToEpoch(seconds, minutes, hours, day,
	month, year);
	uint64_t timeUsec = std::chrono::duration_cast<std::chrono::microseconds>(
	std::chrono::seconds(timeSec))
	.count();
	PropertyValue value{timeUsec};
	try
	{
	DBusMapping dbusMapping{setTimePath, setTimeInterface, timeSetPro,
	"uint64_t"};
	pldm::utils::DBusHandler().setDbusProperty(dbusMapping, value);
	}
	catch (const std::exception& e)
	{
	error(
	"Error Setting time,PATH={SET_TIME_PATH} TIME INTERFACE={TIME_INTERFACE} ERROR={ERR_EXCEP}",
	"SET_TIME_PATH", setTimePath, "TIME_INTERFACE", setTimeInterface,
	"ERR_EXCEP", e.what());
	return ccOnlyResponse(request, PLDM_ERROR);
	}

	return ccOnlyResponse(request, PLDM_SUCCESS);
	}

	Response Handler::getBIOSTable(const pldm_msg* request, size_t payloadLength)
	{
	uint32_t transferHandle{};
	uint8_t transferOpFlag{};
	uint8_t tableType{};

	auto rc = decode_get_bios_table_req(request, payloadLength, &transferHandle,
	&transferOpFlag, &tableType);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	auto table =
	biosConfig.getBIOSTable(static_cast<pldm_bios_table_types>(tableType));
	if (!table)
	{
	return ccOnlyResponse(request, PLDM_BIOS_TABLE_UNAVAILABLE);
	}

	Response response(sizeof(pldm_msg_hdr) +
	PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES + table->size());
	auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());

	rc = encode_get_bios_table_resp(
	request->hdr.instance_id, PLDM_SUCCESS, 0 /* nxtTransferHandle */,
	PLDM_START_AND_END, table->data(), response.size(), responsePtr);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	return response;
	}

	Response Handler::setBIOSTable(const pldm_msg* request, size_t payloadLength)
	{
	uint32_t transferHandle{};
	uint8_t transferOpFlag{};
	uint8_t tableType{};
	struct variable_field field;

	auto rc = decode_set_bios_table_req(request, payloadLength, &transferHandle,
	&transferOpFlag, &tableType, &field);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	Table table(field.ptr, field.ptr + field.length);
	rc = biosConfig.setBIOSTable(tableType, table);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	Response response(sizeof(pldm_msg_hdr) + PLDM_SET_BIOS_TABLE_RESP_BYTES);
	auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());

	rc = encode_set_bios_table_resp(request->hdr.instance_id, PLDM_SUCCESS,
	0 /* nxtTransferHandle */, responsePtr);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	return response;
	}

	Response Handler::getBIOSAttributeCurrentValueByHandle(const pldm_msg* request,
	size_t payloadLength)
	{
	uint32_t transferHandle;
	uint8_t transferOpFlag;
	uint16_t attributeHandle;

	auto rc = decode_get_bios_attribute_current_value_by_handle_req(
	request, payloadLength, &transferHandle, &transferOpFlag,
	&attributeHandle);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	auto table = biosConfig.getBIOSTable(PLDM_BIOS_ATTR_VAL_TABLE);
	if (!table)
	{
	return ccOnlyResponse(request, PLDM_BIOS_TABLE_UNAVAILABLE);
	}

	auto entry = pldm_bios_table_attr_value_find_by_handle(
	table->data(), table->size(), attributeHandle);
	if (entry == nullptr)
	{
	return ccOnlyResponse(request, PLDM_INVALID_BIOS_ATTR_HANDLE);
	}

	auto entryLength = pldm_bios_table_attr_value_entry_length(entry);
	Response response(sizeof(pldm_msg_hdr) +
	PLDM_GET_BIOS_ATTR_CURR_VAL_BY_HANDLE_MIN_RESP_BYTES +
	entryLength,
	0);
	auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());
	rc = encode_get_bios_current_value_by_handle_resp(
	request->hdr.instance_id, PLDM_SUCCESS, 0, PLDM_START_AND_END,
	reinterpret_cast<const uint8_t*>(entry), entryLength, responsePtr);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	return response;
	}

	Response Handler::setBIOSAttributeCurrentValue(const pldm_msg* request,
	size_t payloadLength)
	{
	uint32_t transferHandle;
	uint8_t transferOpFlag;
	variable_field attributeField;

	auto rc = decode_set_bios_attribute_current_value_req(
	request, payloadLength, &transferHandle, &transferOpFlag,
	&attributeField);
	if (rc != PLDM_SUCCESS)
	{
	return ccOnlyResponse(request, rc);
	}

	rc = biosConfig.setAttrValue(attributeField.ptr, attributeField.length,
	false);

	Response response(
	sizeof(pldm_msg_hdr) + PLDM_SET_BIOS_ATTR_CURR_VAL_RESP_BYTES, 0);
	auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());

	encode_set_bios_attribute_current_value_resp(request->hdr.instance_id, rc,
	0, responsePtr);

	return response;
	}

	} // namespace bios
	} // namespace responder
	} // namespace pldm