/**

 * WinPR: Windows Portable Runtime

 * System Information

 *

 * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>

 * Copyright 2013 Bernhard Miklautz <bernhard.miklautz@thincast.com>

 *

 * 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.

 */

#include <winpr/config.h>

#include <winpr/assert.h>

#include <winpr/sysinfo.h>

#include <winpr/platform.h>

#if defined(ANDROID)

#include "cpufeatures/cpu-features.h"

#endif

#if defined(__linux__)

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <dirent.h>

#include <limits.h>

#endif

#if defined(__MACOSX__)

#include <CoreFoundation/CoreFoundation.h>

#include <IOKit/ps/IOPowerSources.h>

#include <IOKit/ps/IOPSKeys.h>

#endif

#if defined(__FreeBSD__)

#include <sys/types.h>

#include <sys/sysctl.h>

#endif

#if !defined(_WIN32)

#if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 199309L)

#include <time.h>

#elif !defined(__APPLE__)

#include <sys/time.h>

#include <sys/sysinfo.h>

#endif

#endif

#include "../log.h"

#define TAG WINPR_TAG("sysinfo")

#define FILETIME_TO_UNIX_OFFSET_S 11644473600UL

#if defined(__MACH__) && defined(__APPLE__)

#include <mach/mach_time.h>

static UINT64 scaleHighPrecision(UINT64 i, UINT32 numer, UINT32 denom)

{

  UINT64 high = (i >> 32) * numer;

  UINT64 low = (i & 0xffffffffull) * numer / denom;

  UINT64 highRem = ((high % denom) << 32) / denom;

  high /= denom;

  return (high << 32) + highRem + low;

}

static UINT64 mac_get_time_ns(void)

{

  mach_timebase_info_data_t timebase = WINPR_C_ARRAY_INIT;

  mach_timebase_info(&timebase);

  UINT64 t = mach_absolute_time();

  return scaleHighPrecision(t, timebase.numer, timebase.denom);

}

#endif

/**

 * api-ms-win-core-sysinfo-l1-1-1.dll:

 *

 * EnumSystemFirmwareTables

 * GetSystemFirmwareTable

 * GetLogicalProcessorInformation

 * GetLogicalProcessorInformationEx

 * GetProductInfo

 * GetSystemDirectoryA

 * GetSystemDirectoryW

 * GetSystemTimeAdjustment

 * GetSystemWindowsDirectoryA

 * GetSystemWindowsDirectoryW

 * GetWindowsDirectoryA

 * GetWindowsDirectoryW

 * GlobalMemoryStatusEx

 * SetComputerNameExW

 * VerSetConditionMask

 */

#ifndef _WIN32

#include <time.h>

#include <sys/time.h>

#ifdef WINPR_HAVE_UNISTD_H

#include <unistd.h>

#endif

#include <winpr/crt.h>

#include <winpr/platform.h>

#if defined(__MACOSX__) || defined(__IOS__)

#include <sys/sysctl.h>

#endif

static WORD GetProcessorArchitecture(void)

{

  WORD cpuArch = PROCESSOR_ARCHITECTURE_UNKNOWN;

#if defined(ANDROID)

  AndroidCpuFamily family = android_getCpuFamily();

  switch (family)

  {

    case ANDROID_CPU_FAMILY_ARM:

      return PROCESSOR_ARCHITECTURE_ARM;

    case ANDROID_CPU_FAMILY_X86:

      return PROCESSOR_ARCHITECTURE_INTEL;

    case ANDROID_CPU_FAMILY_MIPS:

      return PROCESSOR_ARCHITECTURE_MIPS;

    case ANDROID_CPU_FAMILY_ARM64:

      return PROCESSOR_ARCHITECTURE_ARM64;

    case ANDROID_CPU_FAMILY_X86_64:

      return PROCESSOR_ARCHITECTURE_AMD64;

    case ANDROID_CPU_FAMILY_MIPS64:

      return PROCESSOR_ARCHITECTURE_MIPS64;

    default:

      return PROCESSOR_ARCHITECTURE_UNKNOWN;

  }

#elif defined(__MACOSX__) || defined(__IOS__)

  int32_t val = 0;

  size_t len = sizeof(val);

  const int rc = sysctlbyname("hw.cputype", &val, &len, nullptr, 0);

  if (rc != 0)

    return PROCESSOR_ARCHITECTURE_UNKNOWN;

  switch (val)

  {

    case CPU_TYPE_X86:

      return PROCESSOR_ARCHITECTURE_INTEL;

    case CPU_TYPE_X86_64:

      return PROCESSOR_ARCHITECTURE_AMD64;

    case CPU_TYPE_ARM:

      return PROCESSOR_ARCHITECTURE_ARM;

#ifdef CPU_TYPE_ARM64

    case CPU_TYPE_ARM64:

      return PROCESSOR_ARCHITECTURE_ARM64;

#endif

#ifdef CPU_TYPE_ARM64_32

    case CPU_TYPE_ARM64_32:

      return PROCESSOR_ARCHITECTURE_ARM;

#endif

#ifdef CPU_TYPE_POWERPC

    case CPU_TYPE_POWERPC:

      return PROCESSOR_ARCHITECTURE_PPC;

#endif

#ifdef CPU_TYPE_POWERPC64

    case CPU_TYPE_POWERPC64:

      return PROCESSOR_ARCHITECTURE_PPC;

#endif

    default:

      return PROCESSOR_ARCHITECTURE_UNKNOWN;

  }

#elif defined(_M_ARM)

  cpuArch = PROCESSOR_ARCHITECTURE_ARM;

#elif defined(_M_IX86)

  cpuArch = PROCESSOR_ARCHITECTURE_INTEL;

#elif defined(_M_MIPS64)

  /* Needs to be before __mips__ since the compiler defines both */

  cpuArch = PROCESSOR_ARCHITECTURE_MIPS64;

#elif defined(_M_MIPS)

  cpuArch = PROCESSOR_ARCHITECTURE_MIPS;

#elif defined(_M_ARM64)

  cpuArch = PROCESSOR_ARCHITECTURE_ARM64;

#elif defined(_M_AMD64)

  cpuArch = PROCESSOR_ARCHITECTURE_AMD64;

#elif defined(_M_PPC)

  cpuArch = PROCESSOR_ARCHITECTURE_PPC;

#elif defined(_M_ALPHA)

  cpuArch = PROCESSOR_ARCHITECTURE_ALPHA;

#elif defined(_M_E2K)

  cpuArch = PROCESSOR_ARCHITECTURE_E2K;

#endif

  return cpuArch;

}

static DWORD GetNumberOfProcessors(void)

{

  DWORD numCPUs = 1;

#if defined(ANDROID)

  return android_getCpuCount();

#elif defined(__MACOSX__) || defined(__IOS__)

  int32_t val = 0;

  size_t len = sizeof(val);

  const int rc = sysctlbyname("hw.logicalcpu", &val, &len, nullptr, 0);

  if (rc == 0)

    numCPUs = WINPR_ASSERTING_INT_CAST(DWORD, val);

#elif defined(__hpux)

  numCPUs = (DWORD)mpctl(MPC_GETNUMSPUS, nullptr, nullptr);

#elif defined(__sgi)

  numCPUs = (DWORD)sysconf(_SC_NPROC_ONLN);

#elif defined(_SC_NPROCESSORS_ONLN)

  numCPUs = (DWORD)sysconf(_SC_NPROCESSORS_ONLN);

#endif

  return numCPUs;

}

static DWORD GetSystemPageSize(void)

{

  DWORD dwPageSize = 0;

  long sc_page_size = -1;

#if defined(_SC_PAGESIZE)

  if (sc_page_size < 0)

    sc_page_size = sysconf(_SC_PAGESIZE);

#endif

#if defined(_SC_PAGE_SIZE)

  if (sc_page_size < 0)

    sc_page_size = sysconf(_SC_PAGE_SIZE);

#endif

  if (sc_page_size > 0)

    dwPageSize = (DWORD)sc_page_size;

  if (dwPageSize < 4096)

    dwPageSize = 4096;

  return dwPageSize;

}

void GetSystemInfo(LPSYSTEM_INFO lpSystemInfo)

{

  const SYSTEM_INFO empty = WINPR_C_ARRAY_INIT;

  WINPR_ASSERT(lpSystemInfo);

  *lpSystemInfo = empty;

  lpSystemInfo->DUMMYUNIONNAME.DUMMYSTRUCTNAME.wProcessorArchitecture =

      GetProcessorArchitecture();

  lpSystemInfo->dwPageSize = GetSystemPageSize();

  lpSystemInfo->dwNumberOfProcessors = GetNumberOfProcessors();

}

void GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo)

{

  GetSystemInfo(lpSystemInfo);

}

void GetSystemTime(LPSYSTEMTIME lpSystemTime)

{

  time_t ct = 0;

  struct tm tres;

  struct tm* stm = nullptr;

  WORD wMilliseconds = 0;

  UINT64 now = winpr_GetUnixTimeNS();

  ct = WINPR_TIME_NS_TO_S(now);

  wMilliseconds = (WORD)(WINPR_TIME_NS_REM_MS(now));

  stm = gmtime_r(&ct, &tres);

  ZeroMemory(lpSystemTime, sizeof(SYSTEMTIME));

  if (stm)

  {

    lpSystemTime->wYear = (WORD)(stm->tm_year + 1900);

    lpSystemTime->wMonth = (WORD)(stm->tm_mon + 1);

    lpSystemTime->wDayOfWeek = (WORD)stm->tm_wday;

    lpSystemTime->wDay = (WORD)stm->tm_mday;

    lpSystemTime->wHour = (WORD)stm->tm_hour;

    lpSystemTime->wMinute = (WORD)stm->tm_min;

    lpSystemTime->wSecond = (WORD)stm->tm_sec;

    lpSystemTime->wMilliseconds = wMilliseconds;

  }

}

BOOL SetSystemTime(WINPR_ATTR_UNUSED CONST SYSTEMTIME* lpSystemTime)

{

  /* TODO: Implement */

  WLog_ERR("TODO", "TODO: Implement");

  return FALSE;

}

VOID GetLocalTime(LPSYSTEMTIME lpSystemTime)

{

  time_t ct = 0;

  struct tm tres;

  struct tm* ltm = nullptr;

  WORD wMilliseconds = 0;

  UINT64 now = winpr_GetUnixTimeNS();

  ct = WINPR_TIME_NS_TO_S(now);

  wMilliseconds = (WORD)(WINPR_TIME_NS_REM_MS(now));

  ltm = localtime_r(&ct, &tres);

  ZeroMemory(lpSystemTime, sizeof(SYSTEMTIME));

  if (ltm)

  {

    lpSystemTime->wYear = (WORD)(ltm->tm_year + 1900);

    lpSystemTime->wMonth = (WORD)(ltm->tm_mon + 1);

    lpSystemTime->wDayOfWeek = (WORD)ltm->tm_wday;

    lpSystemTime->wDay = (WORD)ltm->tm_mday;

    lpSystemTime->wHour = (WORD)ltm->tm_hour;

    lpSystemTime->wMinute = (WORD)ltm->tm_min;

    lpSystemTime->wSecond = (WORD)ltm->tm_sec;

    lpSystemTime->wMilliseconds = wMilliseconds;

  }

}

BOOL SetLocalTime(WINPR_ATTR_UNUSED CONST SYSTEMTIME* lpSystemTime)

{

  /* TODO: Implement */

  WLog_ERR("TODO", "TODO: Implement");

  return FALSE;

}

VOID GetSystemTimeAsFileTime(LPFILETIME lpSystemTimeAsFileTime)

{

  union

  {

    UINT64 u64;

    FILETIME ft;

  } t;

  t.u64 = (winpr_GetUnixTimeNS() / 100ull) + FILETIME_TO_UNIX_OFFSET_S * 10000000ull;

  *lpSystemTimeAsFileTime = t.ft;

}

BOOL GetSystemTimeAdjustment(WINPR_ATTR_UNUSED PDWORD lpTimeAdjustment,

                             WINPR_ATTR_UNUSED PDWORD lpTimeIncrement,

                             WINPR_ATTR_UNUSED PBOOL lpTimeAdjustmentDisabled)

{

  /* TODO: Implement */

  WLog_ERR("TODO", "TODO: Implement");

  return FALSE;

}

#ifdef CLOCK_MONOTONIC_RAW

#define CLOCK_ID CLOCK_MONOTONIC_RAW

#else

#define CLOCK_ID CLOCK_MONOTONIC

#endif

DWORD GetTickCount(void)

{

  return (DWORD)GetTickCount64();

}

#endif // _WIN32

#if !defined(_WIN32) || defined(_UWP)

#if defined(WITH_WINPR_DEPRECATED)

/* OSVERSIONINFOEX Structure:

 * http://msdn.microsoft.com/en-us/library/windows/desktop/ms724833

 */

BOOL GetVersionExA(LPOSVERSIONINFOA lpVersionInformation)

{

#ifdef _UWP

  /* Windows 10 Version Info */

  if ((lpVersionInformation->dwOSVersionInfoSize == sizeof(OSVERSIONINFOA)) ||

      (lpVersionInformation->dwOSVersionInfoSize == sizeof(OSVERSIONINFOEXA)))

  {

    lpVersionInformation->dwMajorVersion = 10;

    lpVersionInformation->dwMinorVersion = 0;

    lpVersionInformation->dwBuildNumber = 0;

    lpVersionInformation->dwPlatformId = VER_PLATFORM_WIN32_NT;

    ZeroMemory(lpVersionInformation->szCSDVersion, sizeof(lpVersionInformation->szCSDVersion));

    if (lpVersionInformation->dwOSVersionInfoSize == sizeof(OSVERSIONINFOEXA))

    {

      LPOSVERSIONINFOEXA lpVersionInformationEx = (LPOSVERSIONINFOEXA)lpVersionInformation;

      lpVersionInformationEx->wServicePackMajor = 0;

      lpVersionInformationEx->wServicePackMinor = 0;

      lpVersionInformationEx->wSuiteMask = 0;

      lpVersionInformationEx->wProductType = VER_NT_WORKSTATION;

      lpVersionInformationEx->wReserved = 0;

    }

    return TRUE;

  }

#else

  /* Windows 7 SP1 Version Info */

  if ((lpVersionInformation->dwOSVersionInfoSize == sizeof(OSVERSIONINFOA)) ||

      (lpVersionInformation->dwOSVersionInfoSize == sizeof(OSVERSIONINFOEXA)))

  {

    lpVersionInformation->dwMajorVersion = 6;

    lpVersionInformation->dwMinorVersion = 1;

    lpVersionInformation->dwBuildNumber = 7601;

    lpVersionInformation->dwPlatformId = VER_PLATFORM_WIN32_NT;

    ZeroMemory(lpVersionInformation->szCSDVersion, sizeof(lpVersionInformation->szCSDVersion));

    if (lpVersionInformation->dwOSVersionInfoSize == sizeof(OSVERSIONINFOEXA))

    {

      LPOSVERSIONINFOEXA lpVersionInformationEx = (LPOSVERSIONINFOEXA)lpVersionInformation;

      lpVersionInformationEx->wServicePackMajor = 1;

      lpVersionInformationEx->wServicePackMinor = 0;

      lpVersionInformationEx->wSuiteMask = 0;

      lpVersionInformationEx->wProductType = VER_NT_WORKSTATION;

      lpVersionInformationEx->wReserved = 0;

    }

    return TRUE;

  }

#endif

  return FALSE;

}

BOOL GetVersionExW(LPOSVERSIONINFOW lpVersionInformation)

{

  ZeroMemory(lpVersionInformation->szCSDVersion, sizeof(lpVersionInformation->szCSDVersion));

  return GetVersionExA((LPOSVERSIONINFOA)lpVersionInformation);

}

#endif

#endif

#if !defined(_WIN32) || defined(_UWP)

BOOL GetComputerNameW(LPWSTR lpBuffer, LPDWORD lpnSize)

{

  BOOL rc = 0;

  LPSTR buffer = nullptr;

  if (!lpnSize || (*lpnSize > INT_MAX))

    return FALSE;

  if (*lpnSize > 0)

  {

    buffer = malloc(*lpnSize);

    if (!buffer)

      return FALSE;

  }

  rc = GetComputerNameA(buffer, lpnSize);

  if (rc && (*lpnSize > 0))

  {

    const SSIZE_T res = ConvertUtf8NToWChar(buffer, *lpnSize, lpBuffer, *lpnSize);

    rc = res > 0;

  }

  free(buffer);

  return rc;

}

BOOL GetComputerNameA(LPSTR lpBuffer, LPDWORD lpnSize)

{

  if (!lpnSize)

  {

    SetLastError(ERROR_BAD_ARGUMENTS);

    return FALSE;

  }

  char hostname[256 + 1] = WINPR_C_ARRAY_INIT;

  if (gethostname(hostname, ARRAYSIZE(hostname) - 1) == -1)

    return FALSE;

  size_t length = strnlen(hostname, MAX_COMPUTERNAME_LENGTH);

  const char* dot = strchr(hostname, '.');

  if (dot)

  {

    const size_t dotlen = WINPR_ASSERTING_INT_CAST(size_t, (dot - hostname));

    if (dotlen < length)

      length = dotlen;

  }

  if ((*lpnSize <= (DWORD)length) || !lpBuffer)

  {

    SetLastError(ERROR_BUFFER_OVERFLOW);

    *lpnSize = (DWORD)(length + 1);

    return FALSE;

  }

  strncpy(lpBuffer, hostname, length);

  lpBuffer[length] = '\0';

  *lpnSize = (DWORD)length;

  return TRUE;

}

BOOL GetComputerNameExA(COMPUTER_NAME_FORMAT NameType, LPSTR lpBuffer, LPDWORD lpnSize)

{

  size_t length = 0;

  char hostname[256] = WINPR_C_ARRAY_INIT;

  if (!lpnSize)

  {

    SetLastError(ERROR_BAD_ARGUMENTS);

    return FALSE;

  }

  if ((NameType == ComputerNameNetBIOS) || (NameType == ComputerNamePhysicalNetBIOS))

  {

    BOOL rc = GetComputerNameA(lpBuffer, lpnSize);

    if (!rc)

    {

      if (GetLastError() == ERROR_BUFFER_OVERFLOW)

        SetLastError(ERROR_MORE_DATA);

    }

    return rc;

  }

  if (gethostname(hostname, sizeof(hostname)) == -1)

    return FALSE;

  length = strnlen(hostname, sizeof(hostname));

  switch (NameType)

  {

    case ComputerNameDnsHostname:

    case ComputerNameDnsDomain:

    case ComputerNameDnsFullyQualified:

    case ComputerNamePhysicalDnsHostname:

    case ComputerNamePhysicalDnsDomain:

    case ComputerNamePhysicalDnsFullyQualified:

      if ((*lpnSize <= (DWORD)length) || !lpBuffer)

      {

        *lpnSize = (DWORD)(length + 1);

        SetLastError(ERROR_MORE_DATA);

        return FALSE;

      }

      CopyMemory(lpBuffer, hostname, length);

      lpBuffer[length] = '\0';

      *lpnSize = (DWORD)length;

      break;

    default:

      return FALSE;

  }

  return TRUE;

}

BOOL GetComputerNameExW(COMPUTER_NAME_FORMAT NameType, LPWSTR lpBuffer, LPDWORD lpnSize)

{

  BOOL rc = 0;

  LPSTR lpABuffer = nullptr;

  if (!lpnSize)

  {

    SetLastError(ERROR_BAD_ARGUMENTS);

    return FALSE;

  }

  if (*lpnSize > 0)

  {

    lpABuffer = calloc(*lpnSize, sizeof(CHAR));

    if (!lpABuffer)

      return FALSE;

  }

  rc = GetComputerNameExA(NameType, lpABuffer, lpnSize);

  if (rc && (*lpnSize > 0))

  {

    const SSIZE_T res = ConvertUtf8NToWChar(lpABuffer, *lpnSize, lpBuffer, *lpnSize);

    rc = res > 0;

  }

  free(lpABuffer);

  return rc;

}

#if defined(__linux__)

static BOOL sysinfo_read_sysfs_string(const char* path, char* buffer, size_t size)

{

  FILE* fp = fopen(path, "r");

  if (!fp)

    return FALSE;

  BOOL rc = FALSE;

  if (fgets(buffer, WINPR_ASSERTING_INT_CAST(int, size), fp))

  {

    size_t len = strlen(buffer);

    while ((len > 0) && ((buffer[len - 1] == '\n') || (buffer[len - 1] == '\r')))

      buffer[--len] = '\0';

    rc = TRUE;

  }

  else

  {

    WLog_ERR(TAG, "error reading string in %s", path);

  }

  (void)fclose(fp);

  return rc;

}

static BOOL sysinfo_read_sysfs_int(const char* path, long long* value)

{

  char buffer[64] = WINPR_C_ARRAY_INIT;

  if (!sysinfo_read_sysfs_string(path, buffer, sizeof(buffer)))

    return FALSE;

  char* end = nullptr;

  const long long v = strtoll(buffer, &end, 10);

  if (end == buffer)

    return FALSE;

  *value = v;

  return TRUE;

}

/** @brief reads /sys/class/power_supply/, the same kernel interface on both desktop Linux and

 *  Android (no ANDROID-specific carve-out needed: Android exposes the identical sysfs nodes). */

static BOOL sysinfo_get_power_status_platform(LPSYSTEM_POWER_STATUS status)

{

  DIR* dir = opendir("/sys/class/power_supply");

  if (!dir)

  {

    /* no power_supply class at all: treat as a desktop with no battery, AC power assumed -

     * matches real Windows' behavior on a machine with no battery present */

    status->ACLineStatus = AC_LINE_ONLINE;

    status->BatteryFlag = BATTERY_FLAG_NO_BATTERY;

    status->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

    return TRUE;

  }

  BOOL haveBattery = FALSE;

  BOOL onAC = FALSE;

  BOOL charging = FALSE;

  long long percent = -1;

  long long energyNow = -1;

  long long energyFull = -1;

  long long timeToEmpty = -1;

  struct dirent* entry = nullptr;

  // NOLINTNEXTLINE(concurrency-mt-unsafe): dir is a local DIR*, not shared across threads

  while ((entry = readdir(dir)) != nullptr)

  {

    char path[PATH_MAX] = WINPR_C_ARRAY_INIT;

    char value[64] = WINPR_C_ARRAY_INIT;

    long long v = 0;

    if (entry->d_name[0] == '.')

      continue;

    (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/type", entry->d_name);

    if (!sysinfo_read_sysfs_string(path, value, sizeof(value)))

      continue;

    if (strcmp(value, "Battery") == 0)

    {

      (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/present",

                     entry->d_name);

      if (sysinfo_read_sysfs_int(path, &v) && (v == 0))

        continue; /* battery slot present in sysfs, no battery physically installed */

      haveBattery = TRUE;

      (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/status",

                     entry->d_name);

      if (sysinfo_read_sysfs_string(path, value, sizeof(value)) &&

          (strcmp(value, "Charging") == 0))

        charging = TRUE;

      (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/capacity",

                     entry->d_name);

      if (sysinfo_read_sysfs_int(path, &v))

        percent = v;

      (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/time_to_empty_now",

                     entry->d_name);

      if (sysinfo_read_sysfs_int(path, &v) && (v > 0))

        timeToEmpty = v;

      /* not every driver exposes "capacity" directly; fall back to computing it from

       * energy_now/energy_full when present */

      if (percent < 0)

      {

        (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/energy_now",

                       entry->d_name);

        (void)sysinfo_read_sysfs_int(path, &energyNow);

        (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/energy_full",

                       entry->d_name);

        (void)sysinfo_read_sysfs_int(path, &energyFull);

        if ((energyNow < 0) || (energyFull <= 0))

        {

          (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/charge_now",

                         entry->d_name);

          (void)sysinfo_read_sysfs_int(path, &energyNow);

          (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/charge_full",

                         entry->d_name);

          (void)sysinfo_read_sysfs_int(path, &energyFull);

        }

        if ((energyNow >= 0) && (energyFull > 0))

          percent = (energyNow * 100) / energyFull;

      }

    }

    else

    {

      /* Mains / USB / Wireless: any of these reporting online means we're on AC power */

      (void)snprintf(path, sizeof(path) - 1, "/sys/class/power_supply/%s/online",

                     entry->d_name);

      if (sysinfo_read_sysfs_int(path, &v) && (v != 0))

        onAC = TRUE;

    }

  }

  (void)closedir(dir);

  if (!haveBattery)

  {

    status->ACLineStatus = AC_LINE_ONLINE;

    status->BatteryFlag = BATTERY_FLAG_NO_BATTERY;

    status->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

    return TRUE;

  }

  status->ACLineStatus = (onAC || charging) ? AC_LINE_ONLINE : AC_LINE_OFFLINE;

  BYTE flag = 0;

  if (charging)

    flag |= BATTERY_FLAG_CHARGING;

  if (percent >= 0)

  {

    if (percent > 100)

      percent = 100;

    status->BatteryLifePercent = (BYTE)percent;

    if (percent <= 5)

      flag |= BATTERY_FLAG_CRITICAL;

    else if (percent <= 33)

      flag |= BATTERY_FLAG_LOW;

    else if (percent > 66)

      flag |= BATTERY_FLAG_HIGH;

  }

  else

    status->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

  status->BatteryFlag = flag ? flag : BATTERY_FLAG_UNKNOWN;

  if (timeToEmpty > 0)

    status->BatteryLifeTime = (DWORD)timeToEmpty;

  return TRUE;

}

#elif defined(__MACOSX__)

static BOOL sysinfo_get_power_status_platform(LPSYSTEM_POWER_STATUS status)

{

  BOOL rc = TRUE;

  CFTypeRef blob = IOPSCopyPowerSourcesInfo();

  if (!blob)

  {

    WLog_ERR(TAG, "unable to retrieve IOPSCopyPowerSourcesInfo()");

    status->ACLineStatus = AC_LINE_ONLINE;

    status->BatteryFlag = BATTERY_FLAG_NO_BATTERY;

    status->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

    return TRUE;

  }

  BOOL haveBattery = FALSE;

  BOOL onAC = FALSE;

  BOOL charging = FALSE;

  int percent = -1;

  int timeToEmptySeconds = -1;

  CFArrayRef sources = IOPSCopyPowerSourcesList(blob);

  if (sources)

  {

    const CFIndex count = CFArrayGetCount(sources);

    for (CFIndex i = 0; i < count; i++)

    {

      CFDictionaryRef desc =

          IOPSGetPowerSourceDescription(blob, CFArrayGetValueAtIndex(sources, i));

      if (!desc)

        continue;

      CFBooleanRef isPresent = CFDictionaryGetValue(desc, CFSTR(kIOPSIsPresentKey));

      if (isPresent && (CFBooleanGetValue(isPresent) == false))

        continue;

      CFStringRef stateStr = CFDictionaryGetValue(desc, CFSTR(kIOPSPowerSourceStateKey));

      if (stateStr &&

          (CFStringCompare(stateStr, CFSTR(kIOPSACPowerValue), 0) == kCFCompareEqualTo))

        onAC = TRUE;

      CFNumberRef curCapacity = CFDictionaryGetValue(desc, CFSTR(kIOPSCurrentCapacityKey));

      CFNumberRef maxCapacity = CFDictionaryGetValue(desc, CFSTR(kIOPSMaxCapacityKey));

      if (curCapacity && maxCapacity)

      {

        int cur = 0;

        int max = 0;

        CFNumberGetValue(curCapacity, kCFNumberIntType, &cur);

        CFNumberGetValue(maxCapacity, kCFNumberIntType, &max);

        if (max > 0)

        {

          haveBattery = TRUE;

          percent = (int)(((long long)cur * 100) / max);

        }

      }

      CFBooleanRef isCharging = CFDictionaryGetValue(desc, CFSTR(kIOPSIsChargingKey));

      if (isCharging && CFBooleanGetValue(isCharging))

        charging = TRUE;

      CFNumberRef timeToEmpty = CFDictionaryGetValue(desc, CFSTR(kIOPSTimeToEmptyKey));

      if (timeToEmpty)

      {

        int minutes = -1;

        CFNumberGetValue(timeToEmpty, kCFNumberIntType, &minutes);

        if (minutes > 0)

          timeToEmptySeconds = minutes * 60;

      }

    }

    CFRelease(sources);

  }

  CFRelease(blob);

  if (!haveBattery)

  {

    status->ACLineStatus = AC_LINE_ONLINE;

    status->BatteryFlag = BATTERY_FLAG_NO_BATTERY;

    status->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

    return rc;

  }

  status->ACLineStatus = onAC ? AC_LINE_ONLINE : AC_LINE_OFFLINE;

  BYTE flag = 0;

  if (charging)

    flag |= BATTERY_FLAG_CHARGING;

  if (percent >= 0)

  {

    if (percent > 100)

      percent = 100;

    status->BatteryLifePercent = (BYTE)percent;

    if (percent <= 5)

      flag |= BATTERY_FLAG_CRITICAL;

    else if (percent <= 33)

      flag |= BATTERY_FLAG_LOW;

    else if (percent > 66)

      flag |= BATTERY_FLAG_HIGH;

  }

  else

    status->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

  status->BatteryFlag = flag ? flag : BATTERY_FLAG_UNKNOWN;

  if (timeToEmptySeconds > 0)

    status->BatteryLifeTime = (DWORD)timeToEmptySeconds;

  return rc;

}

#elif defined(__FreeBSD__)

static BOOL sysinfo_sysctl_int(const char* name, int* value)

{

  size_t len = sizeof(*value);

  return sysctlbyname(name, value, &len, nullptr, 0) == 0;

}

static BOOL sysinfo_get_power_status_platform(LPSYSTEM_POWER_STATUS status)

{

  int units = 0;

  if (!sysinfo_sysctl_int("hw.acpi.battery.units", &units) || (units <= 0))

  {

    status->ACLineStatus = AC_LINE_ONLINE;

    status->BatteryFlag = BATTERY_FLAG_NO_BATTERY;

    status->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

    return TRUE;

  }

  int acline = -1;

  (void)sysinfo_sysctl_int("hw.acpi.acline", &acline);

  status->ACLineStatus =

      (acline == 1) ? AC_LINE_ONLINE : ((acline == 0) ? AC_LINE_OFFLINE : AC_LINE_UNKNOWN);

  int life = -1;

  (void)sysinfo_sysctl_int("hw.acpi.battery.life", &life);

  int remaining = -1;

  (void)sysinfo_sysctl_int("hw.acpi.battery.time", &remaining);

  /* hw.acpi.battery.state bits mirror the ACPI _BST battery-state field:

   * 1=discharging, 2=charging, 4=critical */

  int state = 0;

  (void)sysinfo_sysctl_int("hw.acpi.battery.state", &state);

  BYTE flag = 0;

  if (state & 0x2)

    flag |= BATTERY_FLAG_CHARGING;

  if (state & 0x4)

    flag |= BATTERY_FLAG_CRITICAL;

  if ((life >= 0) && (life <= 100))

  {

    status->BatteryLifePercent = (BYTE)life;

    if (!(flag & BATTERY_FLAG_CRITICAL))

    {

      if (life <= 5)

        flag |= BATTERY_FLAG_CRITICAL;

      else if (life <= 33)

        flag |= BATTERY_FLAG_LOW;

      else if (life > 66)

        flag |= BATTERY_FLAG_HIGH;

    }

  }

  else

    status->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

  status->BatteryFlag = flag ? flag : BATTERY_FLAG_UNKNOWN;

  if (remaining > 0)

    status->BatteryLifeTime = (DWORD)remaining * 60; /* minutes -> seconds */

  return TRUE;

}

#endif

BOOL GetSystemPowerStatus(LPSYSTEM_POWER_STATUS lpSystemPowerStatus)

{

  if (!lpSystemPowerStatus)

  {

    SetLastError(ERROR_BAD_ARGUMENTS);

    return FALSE;

  }

  /* safe, "no battery information available" defaults - overwritten below on platforms with a

   * real backend */

  lpSystemPowerStatus->ACLineStatus = AC_LINE_UNKNOWN;

  lpSystemPowerStatus->BatteryFlag = BATTERY_FLAG_UNKNOWN;

  lpSystemPowerStatus->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;

  lpSystemPowerStatus->SystemStatusFlag = 0;

  lpSystemPowerStatus->BatteryLifeTime = BATTERY_LIFE_UNKNOWN;

  lpSystemPowerStatus->BatteryFullLifeTime = BATTERY_LIFE_UNKNOWN;

#if defined(__linux__) || defined(__MACOSX__) || defined(__FreeBSD__)

  return sysinfo_get_power_status_platform(lpSystemPowerStatus);

#else

  WLog_WARN(TAG, "GetSystemPowerStatus is not implemented on this platform, reporting "

                 "\"no battery, unknown state\"");

  return TRUE;

#endif

}