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feat: add stubs for Windows system time functions

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ella love 2026-03-02 23:17:28 -05:00
parent 42035b71d8
commit 8d24ebdad8
1 changed files with 129 additions and 0 deletions
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129
Minecraft.Client/Linux/LinuxStubs.h
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@ -18,6 +18,7 @@
#include <fnmatch.h>
#include <time.h>
#include <stdio.h>
#include <sys/time.h>
#define TRUE true
#define FALSE false
@ -160,6 +161,18 @@ typedef struct _LINUXSTUBS_FIND_HANDLE {
char pattern[MAX_PATH];
} _LINUXSTUBS_FIND_HANDLE;
// https://learn.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-systemtime
typedef struct _SYSTEMTIME {
WORD wYear;
WORD wMonth;
WORD wDayOfWeek;
WORD wDay;
WORD wHour;
WORD wMinute;
WORD wSecond;
WORD wMilliseconds;
} SYSTEMTIME, *PSYSTEMTIME, *LPSYSTEMTIME;
#define TLS_OUT_OF_INDEXES ((DWORD)0xFFFFFFFF)
typedef pthread_mutex_t RTL_CRITICAL_SECTION;
@ -520,4 +533,120 @@ static inline BOOL FindClose(HANDLE hFindFile)
return TRUE;
}
// internal helper: convert FILETIME (100ns since 1601) to time_t (seconds since 1970)
static inline time_t _FileTimeToTimeT(const FILETIME& ft)
{
ULONGLONG val = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
const ULONGLONG EPOCH_DIFF = 116444736000000000ULL; // 100ns intervals between 1601-01-01 and 1970-01-01
return (time_t)((val - EPOCH_DIFF) / 10000000ULL);
}
// https://learn.microsoft.com/en-us/windows/win32/api/sysinfoapi/nf-sysinfoapi-getsystemtime
static inline VOID GetSystemTime(LPSYSTEMTIME lpSystemTime)
{
struct timespec ts;
#ifdef CLOCK_REALTIME
clock_gettime(CLOCK_REALTIME, &ts);
#else
struct timeval tv;
gettimeofday(&tv, NULL);
ts.tv_sec = tv.tv_sec;
ts.tv_nsec = tv.tv_usec * 1000;
#endif
struct tm tm;
gmtime_r(&ts.tv_sec, &tm); // UTC
lpSystemTime->wYear = tm.tm_year + 1900;
lpSystemTime->wMonth = tm.tm_mon + 1;
lpSystemTime->wDayOfWeek = tm.tm_wday; // 0 = Sunday
lpSystemTime->wDay = tm.tm_mday;
lpSystemTime->wHour = tm.tm_hour;
lpSystemTime->wMinute = tm.tm_min;
lpSystemTime->wSecond = tm.tm_sec;
lpSystemTime->wMilliseconds = ts.tv_nsec / 1000000; // ns to ms
}
// https://learn.microsoft.com/en-us/windows/win32/api/sysinfoapi/nf-sysinfoapi-getlocaltime
static inline VOID GetLocalTime(LPSYSTEMTIME lpSystemTime)
{
struct timespec ts;
#ifdef CLOCK_REALTIME
clock_gettime(CLOCK_REALTIME, &ts);
#else
struct timeval tv;
gettimeofday(&tv, NULL);
ts.tv_sec = tv.tv_sec;
ts.tv_nsec = tv.tv_usec * 1000;
#endif
struct tm tm;
localtime_r(&ts.tv_sec, &tm); // local time
lpSystemTime->wYear = tm.tm_year + 1900;
lpSystemTime->wMonth = tm.tm_mon + 1;
lpSystemTime->wDayOfWeek = tm.tm_wday;
lpSystemTime->wDay = tm.tm_mday;
lpSystemTime->wHour = tm.tm_hour;
lpSystemTime->wMinute = tm.tm_min;
lpSystemTime->wSecond = tm.tm_sec;
lpSystemTime->wMilliseconds = ts.tv_nsec / 1000000;
}
// https://learn.microsoft.com/en-us/windows/win32/api/timezoneapi/nf-timezoneapi-systemtimetofiletime
static inline BOOL SystemTimeToFileTime(const SYSTEMTIME *lpSystemTime, LPFILETIME lpFileTime)
{
struct tm tm = {0};
tm.tm_year = lpSystemTime->wYear - 1900;
tm.tm_mon = lpSystemTime->wMonth - 1;
tm.tm_mday = lpSystemTime->wDay;
tm.tm_hour = lpSystemTime->wHour;
tm.tm_min = lpSystemTime->wMinute;
tm.tm_sec = lpSystemTime->wSecond;
tm.tm_isdst = -1; // unknown
// Convert to time_t assuming UTC
time_t t;
// Portable UTC mktime: temporarily set TZ to UTC
char *tz_old = getenv("TZ");
setenv("TZ", "UTC", 1);
tzset();
t = mktime(&tm);
if (tz_old)
setenv("TZ", tz_old, 1);
else
unsetenv("TZ");
tzset();
if (t == (time_t)-1)
return FALSE;
// Add milliseconds
ULONGLONG ft = ((ULONGLONG)t + 11644473600ULL) * 10000000ULL;
ft += lpSystemTime->wMilliseconds * 10000ULL; // 1ms = 10000 * 100ns
lpFileTime->dwLowDateTime = (DWORD)(ft & 0xFFFFFFFF);
lpFileTime->dwHighDateTime = (DWORD)(ft >> 32);
return TRUE;
}
// https://learn.microsoft.com/en-us/windows/win32/api/timezoneapi/nf-timezoneapi-filetimetosystemtime
static inline BOOL FileTimeToSystemTime(const FILETIME *lpFileTime, LPSYSTEMTIME lpSystemTime)
{
time_t t = _FileTimeToTimeT(*lpFileTime);
ULONGLONG ft = ((ULONGLONG)lpFileTime->dwHighDateTime << 32) | lpFileTime->dwLowDateTime;
ULONGLONG remainder100ns = ft % 10000000ULL; // 1 second = 10^7 * 100ns
struct tm tm;
gmtime_r(&t, &tm); // UTC
lpSystemTime->wYear = tm.tm_year + 1900;
lpSystemTime->wMonth = tm.tm_mon + 1;
lpSystemTime->wDayOfWeek = tm.tm_wday;
lpSystemTime->wDay = tm.tm_mday;
lpSystemTime->wHour = tm.tm_hour;
lpSystemTime->wMinute = tm.tm_min;
lpSystemTime->wSecond = tm.tm_sec;
lpSystemTime->wMilliseconds = (WORD)(remainder100ns / 10000); // 1ms = 10000 * 100ns
return TRUE;
}
#endif // LINUXSTUBS_H