fastfetch/src/detection/battery/battery_bsd.c

#include "fastfetch.h"
#include "common/sysctl.h"
#include "common/io.h"
#include "battery.h"

#include <dev/acpica/acpiio.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <unistd.h>

const char* ffDetectBattery([[maybe_unused]] FFBatteryOptions* options, FFlist* results) {
    // https://www.freebsd.org/cgi/man.cgi?acpi_battery(4)
    // https://gitlab.xfce.org/panel-plugins/xfce4-battery-plugin/-/blob/master/panel-plugin/libacpi.c

    int units = ffSysctlGetInt("hw.acpi.battery.units", -100);
    if (units < 0) {
        return "sysctlbyname(\"hw.acpi.battery.units\") failed";
    }

    if (units == 0) {
        return nullptr;
    }

    FF_AUTO_CLOSE_FD int acpifd = open("/dev/acpi", O_RDONLY | O_CLOEXEC);
    if (acpifd < 0) {
        return "open(\"/dev/acpi\", O_RDONLY | O_CLOEXEC) failed";
    }

    for (int i = 0; i < units; ++i) {
        union acpi_battery_ioctl_arg battio;
        battio.unit = i;

        if (ioctl(acpifd, ACPIIO_BATT_GET_BATTINFO, &battio) < 0 || (battio.battinfo.state == ACPI_BATT_STAT_NOT_PRESENT)) {
            continue;
        }

        FFBatteryResult* battery = FF_LIST_ADD(FFBatteryResult, *results);
        battery->temperature = FF_BATTERY_TEMP_UNSET;
        battery->cycleCount = 0;
        ffStrbufInit(&battery->manufacturer);
        ffStrbufInit(&battery->modelName);
        ffStrbufInit(&battery->technology);
        ffStrbufInit(&battery->serial);
        ffStrbufInit(&battery->manufactureDate);
        battery->status = FF_BATTERY_STATUS_NONE;
        battery->timeRemaining = -1;
        if (battio.battinfo.min > 0) {
            battery->timeRemaining = battio.battinfo.min * 60;
        }
        battery->capacity = battio.battinfo.cap;
        if (battio.battinfo.state == ACPI_BATT_STAT_INVALID) {
            battery->status |= FF_BATTERY_STATUS_UNKNOWN;
        } else {
            if (battio.battinfo.state & ACPI_BATT_STAT_DISCHARG) {
                battery->status |= FF_BATTERY_STATUS_DISCHARGING;
            }
            if (battio.battinfo.state & ACPI_BATT_STAT_CHARGING) {
                battery->status |= FF_BATTERY_STATUS_CHARGING;
            }
            if (battio.battinfo.state & ACPI_BATT_STAT_CRITICAL) {
                battery->status |= FF_BATTERY_STATUS_CRITICAL;
            }
        }

        int acadStatus;
        if (ioctl(acpifd, ACPIIO_ACAD_GET_STATUS, &acadStatus) >= 0 && acadStatus) {
            battery->status |= FF_BATTERY_STATUS_AC_CONNECTED;
        }

#ifdef ACPIIO_BATT_GET_BIX
        battio.unit = i;
        if (ioctl(acpifd, ACPIIO_BATT_GET_BIX, &battio) >= 0) {
            ffStrbufAppendS(&battery->manufacturer, battio.bix.oeminfo);
            ffStrbufAppendS(&battery->modelName, battio.bix.model);
            ffStrbufAppendS(&battery->technology, battio.bix.type);
            ffStrbufAppendS(&battery->serial, battio.bix.serial);
            battery->cycleCount = battio.bix.cycles;
        }
#elif defined(ACPIIO_BATT_GET_BIF)
        battio.unit = i;
        if (ioctl(acpifd, ACPIIO_BATT_GET_BIF, &battio) >= 0) {
            ffStrbufAppendS(&battery->manufacturer, battio.bif.oeminfo);
            ffStrbufAppendS(&battery->modelName, battio.bif.model);
            ffStrbufAppendS(&battery->technology, battio.bif.type);
            ffStrbufAppendS(&battery->serial, battio.bif.serial);
        }
#endif
    }
    return nullptr;
}