#include "storagehandler.hpp"

#include "fruread.hpp"
#include "read_fru_data.hpp"
#include "selutility.hpp"
#include "sensorhandler.hpp"
#include "storageaddsel.hpp"
#include "utils.hpp"

#include <arpa/inet.h>
#include <host-ipmid/ipmid-api.h>
#include <mapper.h>
#include <systemd/sd-bus.h>

#include <algorithm>
#include <chrono>
#include <cstdio>
#include <cstring>
#include <phosphor-logging/elog-errors.hpp>
#include <phosphor-logging/log.hpp>
#include <sdbusplus/message/types.hpp>
#include <sdbusplus/server.hpp>
#include <string>
#include <xyz/openbmc_project/Common/error.hpp>

#if __has_include(<filesystem>)
#include <filesystem>
#elif __has_include(<experimental/filesystem>)
#include <experimental/filesystem>
namespace std
{
// splice experimental::filesystem into std
namespace filesystem = std::experimental::filesystem;
} // namespace std
#else
#error filesystem not available
#endif

void register_netfn_storage_functions() __attribute__((constructor));

unsigned int g_sel_time = 0xFFFFFFFF;
extern const ipmi::sensor::IdInfoMap sensors;
extern const FruMap frus;

namespace
{
constexpr auto TIME_INTERFACE = "xyz.openbmc_project.Time.EpochTime";
constexpr auto HOST_TIME_PATH = "/xyz/openbmc_project/time/host";
constexpr auto DBUS_PROPERTIES = "org.freedesktop.DBus.Properties";
constexpr auto PROPERTY_ELAPSED = "Elapsed";

const char* getTimeString(const uint64_t& usecSinceEpoch)
{
    using namespace std::chrono;
    system_clock::time_point tp{microseconds(usecSinceEpoch)};
    auto t = system_clock::to_time_t(tp);
    return std::ctime(&t);
}
} // namespace

namespace cache
{
/*
 * This cache contains the object paths of the logging entries sorted in the
 * order of the filename(numeric order). The cache is initialized by
 * invoking readLoggingObjectPaths with the cache as the parameter. The
 * cache is invoked in the execution of the Get SEL info and Delete SEL
 * entry command. The Get SEL Info command is typically invoked before the
 * Get SEL entry command, so the cache is utilized for responding to Get SEL
 * entry command. The cache is invalidated by clearing after Delete SEL
 * entry and Clear SEL command.
 */
ipmi::sel::ObjectPaths paths;

} // namespace cache

namespace variant_ns = sdbusplus::message::variant_ns;

using InternalFailure =
    sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;
using namespace phosphor::logging;
using namespace ipmi::fru;

/**
 * @enum Device access mode
 */
enum class AccessMode
{
    bytes, ///< Device is accessed by bytes
    words  ///< Device is accessed by words
};

ipmi_ret_t ipmi_storage_wildcard(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                                 ipmi_request_t request,
                                 ipmi_response_t response,
                                 ipmi_data_len_t data_len,
                                 ipmi_context_t context)
{
    // Status code.
    ipmi_ret_t rc = IPMI_CC_INVALID;
    *data_len = 0;
    return rc;
}

ipmi_ret_t getSELInfo(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                      ipmi_request_t request, ipmi_response_t response,
                      ipmi_data_len_t data_len, ipmi_context_t context)
{
    std::vector<uint8_t> outPayload(sizeof(ipmi::sel::GetSELInfoResponse));
    auto responseData =
        reinterpret_cast<ipmi::sel::GetSELInfoResponse*>(outPayload.data());

    responseData->selVersion = ipmi::sel::selVersion;
    // Last erase timestamp is not available from log manager.
    responseData->eraseTimeStamp = ipmi::sel::invalidTimeStamp;
    responseData->operationSupport = ipmi::sel::operationSupport;

    try
    {
        ipmi::sel::readLoggingObjectPaths(cache::paths);
    }
    catch (const sdbusplus::exception::SdBusError& e)
    {
        // No action if reading log objects have failed for this command.
        // readLoggingObjectPaths will throw exception if there are no log
        // entries. The command will be responded with number of SEL entries
        // as 0.
    }

    responseData->entries = 0;
    responseData->addTimeStamp = ipmi::sel::invalidTimeStamp;

    if (!cache::paths.empty())
    {
        responseData->entries = static_cast<uint16_t>(cache::paths.size());

        try
        {
            responseData->addTimeStamp = static_cast<uint32_t>(
                (ipmi::sel::getEntryTimeStamp(cache::paths.back()).count()));
        }
        catch (InternalFailure& e)
        {
        }
        catch (const std::runtime_error& e)
        {
            log<level::ERR>(e.what());
        }
    }

    std::memcpy(response, outPayload.data(), outPayload.size());
    *data_len = outPayload.size();

    return IPMI_CC_OK;
}

ipmi_ret_t getSELEntry(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                       ipmi_request_t request, ipmi_response_t response,
                       ipmi_data_len_t data_len, ipmi_context_t context)
{
    auto requestData =
        reinterpret_cast<const ipmi::sel::GetSELEntryRequest*>(request);

    if (requestData->reservationID != 0)
    {
        if (!checkSELReservation(requestData->reservationID))
        {
            *data_len = 0;
            return IPMI_CC_INVALID_RESERVATION_ID;
        }
    }

    if (cache::paths.empty())
    {
        *data_len = 0;
        return IPMI_CC_SENSOR_INVALID;
    }

    ipmi::sel::ObjectPaths::const_iterator iter;

    // Check for the requested SEL Entry.
    if (requestData->selRecordID == ipmi::sel::firstEntry)
    {
        iter = cache::paths.begin();
    }
    else if (requestData->selRecordID == ipmi::sel::lastEntry)
    {
        iter = cache::paths.end();
    }
    else
    {
        std::string objPath = std::string(ipmi::sel::logBasePath) + "/" +
                              std::to_string(requestData->selRecordID);

        iter = std::find(cache::paths.begin(), cache::paths.end(), objPath);
        if (iter == cache::paths.end())
        {
            *data_len = 0;
            return IPMI_CC_SENSOR_INVALID;
        }
    }

    ipmi::sel::GetSELEntryResponse record{};

    // Convert the log entry into SEL record.
    try
    {
        record = ipmi::sel::convertLogEntrytoSEL(*iter);
    }
    catch (InternalFailure& e)
    {
        *data_len = 0;
        return IPMI_CC_UNSPECIFIED_ERROR;
    }
    catch (const std::runtime_error& e)
    {
        log<level::ERR>(e.what());
        *data_len = 0;
        return IPMI_CC_UNSPECIFIED_ERROR;
    }

    // Identify the next SEL record ID
    if (iter != cache::paths.end())
    {
        ++iter;
        if (iter == cache::paths.end())
        {
            record.nextRecordID = ipmi::sel::lastEntry;
        }
        else
        {
            namespace fs = std::filesystem;
            fs::path path(*iter);
            record.nextRecordID = static_cast<uint16_t>(
                std::stoul(std::string(path.filename().c_str())));
        }
    }
    else
    {
        record.nextRecordID = ipmi::sel::lastEntry;
    }

    if (requestData->readLength == ipmi::sel::entireRecord)
    {
        std::memcpy(response, &record, sizeof(record));
        *data_len = sizeof(record);
    }
    else
    {
        if (requestData->offset >= ipmi::sel::selRecordSize ||
            requestData->readLength > ipmi::sel::selRecordSize)
        {
            *data_len = 0;
            return IPMI_CC_INVALID_FIELD_REQUEST;
        }

        auto diff = ipmi::sel::selRecordSize - requestData->offset;
        auto readLength =
            std::min(diff, static_cast<int>(requestData->readLength));

        std::memcpy(response, &record.nextRecordID,
                    sizeof(record.nextRecordID));
        std::memcpy(static_cast<uint8_t*>(response) +
                        sizeof(record.nextRecordID),
                    &record.recordID + requestData->offset, readLength);
        *data_len = sizeof(record.nextRecordID) + readLength;
    }

    return IPMI_CC_OK;
}

ipmi_ret_t deleteSELEntry(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                          ipmi_request_t request, ipmi_response_t response,
                          ipmi_data_len_t data_len, ipmi_context_t context)
{
    namespace fs = std::experimental::filesystem;
    auto requestData =
        reinterpret_cast<const ipmi::sel::DeleteSELEntryRequest*>(request);

    if (!checkSELReservation(requestData->reservationID))
    {
        *data_len = 0;
        return IPMI_CC_INVALID_RESERVATION_ID;
    }

    // Per the IPMI spec, need to cancel the reservation when a SEL entry is
    // deleted
    cancelSELReservation();

    try
    {
        ipmi::sel::readLoggingObjectPaths(cache::paths);
    }
    catch (const sdbusplus::exception::SdBusError& e)
    {
        // readLoggingObjectPaths will throw exception if there are no error
        // log entries.
        *data_len = 0;
        return IPMI_CC_SENSOR_INVALID;
    }

    if (cache::paths.empty())
    {
        *data_len = 0;
        return IPMI_CC_SENSOR_INVALID;
    }

    ipmi::sel::ObjectPaths::const_iterator iter;
    uint16_t delRecordID = 0;

    if (requestData->selRecordID == ipmi::sel::firstEntry)
    {
        iter = cache::paths.begin();
        fs::path path(*iter);
        delRecordID = static_cast<uint16_t>(
            std::stoul(std::string(path.filename().c_str())));
    }
    else if (requestData->selRecordID == ipmi::sel::lastEntry)
    {
        iter = cache::paths.end();
        fs::path path(*iter);
        delRecordID = static_cast<uint16_t>(
            std::stoul(std::string(path.filename().c_str())));
    }
    else
    {
        std::string objPath = std::string(ipmi::sel::logBasePath) + "/" +
                              std::to_string(requestData->selRecordID);

        iter = std::find(cache::paths.begin(), cache::paths.end(), objPath);
        if (iter == cache::paths.end())
        {
            *data_len = 0;
            return IPMI_CC_SENSOR_INVALID;
        }
        delRecordID = requestData->selRecordID;
    }

    sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};
    std::string service;

    try
    {
        service = ipmi::getService(bus, ipmi::sel::logDeleteIntf, *iter);
    }
    catch (const std::runtime_error& e)
    {
        log<level::ERR>(e.what());
        *data_len = 0;
        return IPMI_CC_UNSPECIFIED_ERROR;
    }

    auto methodCall = bus.new_method_call(service.c_str(), (*iter).c_str(),
                                          ipmi::sel::logDeleteIntf, "Delete");
    auto reply = bus.call(methodCall);
    if (reply.is_method_error())
    {
        *data_len = 0;
        return IPMI_CC_UNSPECIFIED_ERROR;
    }

    // Invalidate the cache of dbus entry objects.
    cache::paths.clear();
    std::memcpy(response, &delRecordID, sizeof(delRecordID));
    *data_len = sizeof(delRecordID);

    return IPMI_CC_OK;
}

ipmi_ret_t clearSEL(ipmi_netfn_t netfn, ipmi_cmd_t cmd, ipmi_request_t request,
                    ipmi_response_t response, ipmi_data_len_t data_len,
                    ipmi_context_t context)
{
    auto requestData =
        reinterpret_cast<const ipmi::sel::ClearSELRequest*>(request);

    if (!checkSELReservation(requestData->reservationID))
    {
        *data_len = 0;
        return IPMI_CC_INVALID_RESERVATION_ID;
    }

    if (requestData->charC != 'C' || requestData->charL != 'L' ||
        requestData->charR != 'R')
    {
        *data_len = 0;
        return IPMI_CC_INVALID_FIELD_REQUEST;
    }

    uint8_t eraseProgress = ipmi::sel::eraseComplete;

    /*
     * Erasure status cannot be fetched from DBUS, so always return erasure
     * status as `erase completed`.
     */
    if (requestData->eraseOperation == ipmi::sel::getEraseStatus)
    {
        std::memcpy(response, &eraseProgress, sizeof(eraseProgress));
        *data_len = sizeof(eraseProgress);
        return IPMI_CC_OK;
    }

    // Per the IPMI spec, need to cancel any reservation when the SEL is cleared
    cancelSELReservation();

    sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};
    ipmi::sel::ObjectPaths objectPaths;
    auto depth = 0;

    auto mapperCall =
        bus.new_method_call(ipmi::sel::mapperBusName, ipmi::sel::mapperObjPath,
                            ipmi::sel::mapperIntf, "GetSubTreePaths");
    mapperCall.append(ipmi::sel::logBasePath);
    mapperCall.append(depth);
    mapperCall.append(ipmi::sel::ObjectPaths({ipmi::sel::logEntryIntf}));

    try
    {
        auto reply = bus.call(mapperCall);
        if (reply.is_method_error())
        {
            std::memcpy(response, &eraseProgress, sizeof(eraseProgress));
            *data_len = sizeof(eraseProgress);
            return IPMI_CC_OK;
        }

        reply.read(objectPaths);
        if (objectPaths.empty())
        {
            std::memcpy(response, &eraseProgress, sizeof(eraseProgress));
            *data_len = sizeof(eraseProgress);
            return IPMI_CC_OK;
        }
    }
    catch (const sdbusplus::exception::SdBusError& e)
    {
        std::memcpy(response, &eraseProgress, sizeof(eraseProgress));
        *data_len = sizeof(eraseProgress);
        return IPMI_CC_OK;
    }

    std::string service;

    try
    {
        service = ipmi::getService(bus, ipmi::sel::logDeleteIntf,
                                   objectPaths.front());
    }
    catch (const std::runtime_error& e)
    {
        log<level::ERR>(e.what());
        *data_len = 0;
        return IPMI_CC_UNSPECIFIED_ERROR;
    }

    for (const auto& iter : objectPaths)
    {
        auto methodCall = bus.new_method_call(
            service.c_str(), iter.c_str(), ipmi::sel::logDeleteIntf, "Delete");

        auto reply = bus.call(methodCall);
        if (reply.is_method_error())
        {
            *data_len = 0;
            return IPMI_CC_UNSPECIFIED_ERROR;
        }
    }

    // Invalidate the cache of dbus entry objects.
    cache::paths.clear();
    std::memcpy(response, &eraseProgress, sizeof(eraseProgress));
    *data_len = sizeof(eraseProgress);
    return IPMI_CC_OK;
}

ipmi_ret_t ipmi_storage_get_sel_time(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                                     ipmi_request_t request,
                                     ipmi_response_t response,
                                     ipmi_data_len_t data_len,
                                     ipmi_context_t context)
{
    using namespace std::chrono;
    uint64_t host_time_usec = 0;
    uint32_t resp = 0;
    std::stringstream hostTime;

    try
    {
        sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};
        auto service = ipmi::getService(bus, TIME_INTERFACE, HOST_TIME_PATH);
        sdbusplus::message::variant<uint64_t> value;

        // Get host time
        auto method = bus.new_method_call(service.c_str(), HOST_TIME_PATH,
                                          DBUS_PROPERTIES, "Get");

        method.append(TIME_INTERFACE, PROPERTY_ELAPSED);
        auto reply = bus.call(method);
        if (reply.is_method_error())
        {
            log<level::ERR>("Error getting time",
                            entry("SERVICE=%s", service.c_str()),
                            entry("PATH=%s", HOST_TIME_PATH));
            return IPMI_CC_UNSPECIFIED_ERROR;
        }
        reply.read(value);
        host_time_usec = variant_ns::get<uint64_t>(value);
    }
    catch (InternalFailure& e)
    {
        log<level::ERR>(e.what());
        return IPMI_CC_UNSPECIFIED_ERROR;
    }
    catch (const std::runtime_error& e)
    {
        log<level::ERR>(e.what());
        return IPMI_CC_UNSPECIFIED_ERROR;
    }

    hostTime << "Host time:" << getTimeString(host_time_usec);
    log<level::DEBUG>(hostTime.str().c_str());

    // Time is really long int but IPMI wants just uint32. This works okay until
    // the number of seconds since 1970 overflows uint32 size.. Still a whole
    // lot of time here to even think about that.
    resp = duration_cast<seconds>(microseconds(host_time_usec)).count();
    resp = htole32(resp);

    // From the IPMI Spec 2.0, response should be a 32-bit value
    *data_len = sizeof(resp);

    // Pack the actual response
    std::memcpy(response, &resp, *data_len);

    return IPMI_CC_OK;
}

ipmi_ret_t ipmi_storage_set_sel_time(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                                     ipmi_request_t request,
                                     ipmi_response_t response,
                                     ipmi_data_len_t data_len,
                                     ipmi_context_t context)
{
    using namespace std::chrono;
    ipmi_ret_t rc = IPMI_CC_OK;
    uint32_t secs = *static_cast<uint32_t*>(request);
    *data_len = 0;

    secs = le32toh(secs);
    microseconds usec{seconds(secs)};

    try
    {
        sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};
        auto service = ipmi::getService(bus, TIME_INTERFACE, HOST_TIME_PATH);
        sdbusplus::message::variant<uint64_t> value{usec.count()};

        // Set host time
        auto method = bus.new_method_call(service.c_str(), HOST_TIME_PATH,
                                          DBUS_PROPERTIES, "Set");

        method.append(TIME_INTERFACE, PROPERTY_ELAPSED, value);
        auto reply = bus.call(method);
        if (reply.is_method_error())
        {
            log<level::ERR>("Error setting time",
                            entry("SERVICE=%s", service.c_str()),
                            entry("PATH=%s", HOST_TIME_PATH));
            rc = IPMI_CC_UNSPECIFIED_ERROR;
        }
    }
    catch (InternalFailure& e)
    {
        log<level::ERR>(e.what());
        rc = IPMI_CC_UNSPECIFIED_ERROR;
    }
    catch (const std::runtime_error& e)
    {
        log<level::ERR>(e.what());
        rc = IPMI_CC_UNSPECIFIED_ERROR;
    }

    return rc;
}

ipmi_ret_t ipmi_storage_reserve_sel(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                                    ipmi_request_t request,
                                    ipmi_response_t response,
                                    ipmi_data_len_t data_len,
                                    ipmi_context_t context)
{
    ipmi_ret_t rc = IPMI_CC_OK;
    unsigned short selResID = reserveSel();

    *data_len = sizeof(selResID);

    // Pack the actual response
    std::memcpy(response, &selResID, *data_len);

    return rc;
}

ipmi_ret_t ipmi_storage_add_sel(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                                ipmi_request_t request,
                                ipmi_response_t response,
                                ipmi_data_len_t data_len,
                                ipmi_context_t context)
{

    ipmi_ret_t rc = IPMI_CC_OK;
    ipmi_add_sel_request_t* p = (ipmi_add_sel_request_t*)request;
    uint16_t recordid;

    // Per the IPMI spec, need to cancel the reservation when a SEL entry is
    // added
    cancelSELReservation();

    recordid = ((uint16_t)p->eventdata[1] << 8) | p->eventdata[2];

    *data_len = sizeof(recordid);

    // Pack the actual response
    std::memcpy(response, &p->eventdata[1], 2);

    // Hostboot sends SEL with OEM record type 0xDE to indicate that there is
    // a maintenance procedure associated with eSEL record.
    static constexpr auto procedureType = 0xDE;
    if (p->recordtype == procedureType)
    {
        // In the OEM record type 0xDE, byte 11 in the SEL record indicate the
        // procedure number.
        createProcedureLogEntry(p->sensortype);
    }
    else
    {
        send_esel(recordid);
    }

    return rc;
}

// Read FRU info area
ipmi_ret_t ipmi_storage_get_fru_inv_area_info(
    ipmi_netfn_t netfn, ipmi_cmd_t cmd, ipmi_request_t request,
    ipmi_response_t response, ipmi_data_len_t data_len, ipmi_context_t context)
{
    ipmi_ret_t rc = IPMI_CC_OK;
    const FruInvenAreaInfoRequest* reqptr =
        reinterpret_cast<const FruInvenAreaInfoRequest*>(request);

    auto iter = frus.find(reqptr->fruID);
    if (iter == frus.end())
    {
        *data_len = 0;
        return IPMI_CC_SENSOR_INVALID;
    }

    try
    {
        const auto& fruArea = getFruAreaData(reqptr->fruID);
        auto size = static_cast<uint16_t>(fruArea.size());
        FruInvenAreaInfoResponse resp;
        resp.sizems = size >> 8;
        resp.sizels = size;
        resp.access = static_cast<uint8_t>(AccessMode::bytes);

        *data_len = sizeof(resp);

        // Pack the actual response
        std::memcpy(response, &resp, *data_len);
    }
    catch (const InternalFailure& e)
    {
        rc = IPMI_CC_UNSPECIFIED_ERROR;
        *data_len = 0;
        log<level::ERR>(e.what());
    }
    return rc;
}

// Read FRU data
ipmi_ret_t ipmi_storage_read_fru_data(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                                      ipmi_request_t request,
                                      ipmi_response_t response,
                                      ipmi_data_len_t data_len,
                                      ipmi_context_t context)
{
    ipmi_ret_t rc = IPMI_CC_OK;
    const ReadFruDataRequest* reqptr =
        reinterpret_cast<const ReadFruDataRequest*>(request);
    auto resptr = reinterpret_cast<ReadFruDataResponse*>(response);

    auto iter = frus.find(reqptr->fruID);
    if (iter == frus.end())
    {
        *data_len = 0;
        return IPMI_CC_SENSOR_INVALID;
    }

    auto offset =
        static_cast<uint16_t>(reqptr->offsetMS << 8 | reqptr->offsetLS);
    try
    {
        const auto& fruArea = getFruAreaData(reqptr->fruID);
        auto size = fruArea.size();

        if (offset >= size)
        {
            return IPMI_CC_PARM_OUT_OF_RANGE;
        }

        // Write the count of response data.
        if ((offset + reqptr->count) <= size)
        {
            resptr->count = reqptr->count;
        }
        else
        {
            resptr->count = size - offset;
        }

        std::copy((fruArea.begin() + offset),
                  (fruArea.begin() + offset + resptr->count), resptr->data);

        *data_len = resptr->count + 1; // additional one byte for count
    }
    catch (const InternalFailure& e)
    {
        rc = IPMI_CC_UNSPECIFIED_ERROR;
        *data_len = 0;
        log<level::ERR>(e.what());
    }
    return rc;
}

ipmi_ret_t ipmi_get_repository_info(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                                    ipmi_request_t request,
                                    ipmi_response_t response,
                                    ipmi_data_len_t data_len,
                                    ipmi_context_t context)
{
    constexpr auto sdrVersion = 0x51;
    auto responseData = reinterpret_cast<GetRepositoryInfoResponse*>(response);

    std::memset(responseData, 0, sizeof(GetRepositoryInfoResponse));

    responseData->sdrVersion = sdrVersion;

    uint16_t records = frus.size() + sensors.size();
    responseData->recordCountMs = records >> 8;
    responseData->recordCountLs = records;

    responseData->freeSpace[0] = 0xFF;
    responseData->freeSpace[1] = 0xFF;

    *data_len = sizeof(GetRepositoryInfoResponse);

    return IPMI_CC_OK;
}

void register_netfn_storage_functions()
{
    // <Wildcard Command>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_WILDCARD, NULL,
                           ipmi_storage_wildcard, PRIVILEGE_USER);

    // <Get SEL Info>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_GET_SEL_INFO, NULL,
                           getSELInfo, PRIVILEGE_USER);

    // <Get SEL Time>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_GET_SEL_TIME, NULL,
                           ipmi_storage_get_sel_time, PRIVILEGE_USER);

    // <Set SEL Time>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_SET_SEL_TIME, NULL,
                           ipmi_storage_set_sel_time, PRIVILEGE_OPERATOR);

    // <Reserve SEL>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_RESERVE_SEL, NULL,
                           ipmi_storage_reserve_sel, PRIVILEGE_USER);

    // <Get SEL Entry>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_GET_SEL_ENTRY, NULL,
                           getSELEntry, PRIVILEGE_USER);

    // <Delete SEL Entry>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_DELETE_SEL, NULL,
                           deleteSELEntry, PRIVILEGE_OPERATOR);

    // <Add SEL Entry>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_ADD_SEL, NULL,
                           ipmi_storage_add_sel, PRIVILEGE_OPERATOR);
    // <Clear SEL>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_CLEAR_SEL, NULL, clearSEL,
                           PRIVILEGE_OPERATOR);
    // <Get FRU Inventory Area Info>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_GET_FRU_INV_AREA_INFO, NULL,
                           ipmi_storage_get_fru_inv_area_info,
                           PRIVILEGE_OPERATOR);

    // <Add READ FRU Data
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_READ_FRU_DATA, NULL,
                           ipmi_storage_read_fru_data, PRIVILEGE_OPERATOR);

    // <Get Repository Info>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_GET_REPOSITORY_INFO,
                           nullptr, ipmi_get_repository_info, PRIVILEGE_USER);

    // <Reserve SDR Repository>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_RESERVE_SDR, nullptr,
                           ipmi_sen_reserve_sdr, PRIVILEGE_USER);

    // <Get SDR>
    ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_GET_SDR, nullptr,
                           ipmi_sen_get_sdr, PRIVILEGE_USER);

    ipmi::fru::registerCallbackHandler();
    return;
}