ipmisnoop/ipmisnoop.hpp

#pragma once

#include "lpcsnoop/snoop.hpp"

#include <boost/asio.hpp>
#include <gpiod.hpp>
#include <sdbusplus/asio/connection.hpp>
#include <sdbusplus/asio/object_server.hpp>
#include <sdbusplus/asio/property.hpp>
#include <sdbusplus/bus.hpp>
#include <sdbusplus/server.hpp>
#include <xyz/openbmc_project/Chassis/Buttons/HostSelector/server.hpp>
#include <xyz/openbmc_project/State/Boot/Raw/server.hpp>

#include <filesystem>
#include <iostream>
#include <span>

const std::string ipmiSnoopObject = "/xyz/openbmc_project/state/boot/raw";

const int hostParseIdx = 3;
const int maxPostcode = 255;
const int maxPosition = 4;

extern bool sevenSegmentLedEnabled;

extern std::vector<gpiod::line> led_lines;

using Selector =
    sdbusplus::xyz::openbmc_project::Chassis::Buttons::server::HostSelector;

const std::string selectorService = "xyz.openbmc_project.Chassis.Buttons";
const std::string selectorObject =
    "/xyz/openbmc_project/Chassis/Buttons/HostSelector";
const std::string selectorIface =
    "xyz.openbmc_project.Chassis.Buttons.HostSelector";

const std::string rawObject = "/xyz/openbmc_project/state/boot";
const std::string rawIface = "xyz.openbmc_project.State.Boot.Raw";
const std::string rawService = "xyz.openbmc_project.State.Boot.Raw";

int postCodeIpmiHandler(const std::string& snoopObject,
                        const std::string& snoopDbus, sdbusplus::bus_t& bus,
                        std::span<std::string> host);

uint32_t getSelectorPosition(sdbusplus::bus_t& bus);

struct IpmiPostReporter : PostObject
{
    IpmiPostReporter(sdbusplus::bus_t& bus, const char* objPath) :
        PostObject(bus, objPath), bus(bus),
        propertiesChangedSignalRaw(
            bus,
            sdbusplus::bus::match::rules::propertiesChanged(objPath, rawIface),

            [this, &bus](sdbusplus::message_t& msg) {
                using primarycode_t = uint64_t;
                using secondarycode_t = std::vector<uint8_t>;
                using postcode_t = std::tuple<primarycode_t, secondarycode_t>;

                /* sevenSegmentLedEnabled flag is set when GPIO pins are not
                there 7 seg display for fewer platforms. So, the code for
                postcode display and Get Selector position can be skipped in
                those platforms.
                */
                if (!sevenSegmentLedEnabled)
                {
                    return;
                }

                std::string objectName;
                std::string InterfaceName;
                std::map<std::string, std::variant<postcode_t>> msgData;
                msg.read(InterfaceName, msgData);

                std::filesystem::path name(msg.get_path());
                objectName = name.filename();

                std::string hostNumStr = objectName.substr(hostParseIdx);
                size_t hostNum = std::stoi(hostNumStr);

                size_t position = getSelectorPosition(bus);

                if (position > maxPosition)
                {
                    std::cerr << "Invalid position. Position should be 1 to 4 "
                                 "for all hosts "
                              << std::endl;
                }

                // Check if it was the Value property that changed.
                auto valPropMap = msgData.find("Value");
                if (valPropMap == msgData.end())
                {
                    std::cerr << "Value property is not found " << std::endl;
                    return;
                }
                uint64_t postcode =
                    std::get<0>(std::get<postcode_t>(valPropMap->second));

                if (postcode <= maxPostcode)
                {
                    if (position == hostNum)
                    {
                        uint8_t postcode_8bit =
                            static_cast<uint8_t>(postcode & 0x0000FF);

                        // write postcode into seven segment display
                        if (postCodeDisplay(postcode_8bit) < 0)
                        {
                            fprintf(stderr, "Error in display the postcode\n");
                        }
                    }
                    else
                    {
                        fprintf(stderr, "Host Selector Position and host "
                                        "number is not matched..\n");
                    }
                }
                else
                {
                    fprintf(stderr, "invalid postcode value \n");
                }
            })
    {}

    sdbusplus::bus_t& bus;
    sdbusplus::bus::match_t propertiesChangedSignalRaw;
    int postCodeDisplay(uint8_t);
    void getSelectorPositionSignal(sdbusplus::bus_t& bus);
};