dlls/kernel/time.c

   1 /*
   2  * Win32 kernel time functions
   3  *
   4  * Copyright 1995 Martin von Loewis and Cameron Heide
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <string.h>
  24 #ifdef HAVE_UNISTD_H
  25 # include <unistd.h>
  26 #endif
  27 #include <stdarg.h>
  28 #include <stdlib.h>
  29 #include <time.h>
  30 #ifdef HAVE_SYS_TIME_H
  31 # include <sys/time.h>
  32 #endif
  33 #ifdef HAVE_SYS_TIMES_H
  34 # include <sys/times.h>
  35 #endif
  36
  37 #define NONAMELESSUNION
  38 #define NONAMELESSSTRUCT
  39 #include "windef.h"
  40 #include "winbase.h"
  41 #include "winreg.h"
  42 #include "ntstatus.h"
  43 #include "winternl.h"
  44 #include "winerror.h"
  45 #include "winnls.h"
  46 #include "kernel_private.h"
  47 #include "wine/unicode.h"
  48 #include "wine/debug.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(time);
  51
  52 /* maximum time adjustment in seconds for SetLocalTime and SetSystemTime */
  53 #define SETTIME_MAX_ADJUST 120
  54 #define CALINFO_MAX_YEAR 2029
  55
  56
  57 /***********************************************************************
  58  *              SetLocalTime            (KERNEL32.@)
  59  *
  60  *  Set the local time using current time zone and daylight
  61  *  savings settings.
  62  *
  63  * RETURNS
  64  *  Success: TRUE. The time was set
  65  *  Failure: FALSE, if the time was invalid or caller does not have
  66  *           permission to change the time.
  67  */
  68 BOOL WINAPI SetLocalTime(
  69     const SYSTEMTIME *systime) /* [in] The desired local time. */
  70 {
  71     FILETIME ft;
  72     LARGE_INTEGER st, st2;
  73     NTSTATUS status;
  74
  75     SystemTimeToFileTime( systime, &ft );
  76     st.u.LowPart = ft.dwLowDateTime;
  77     st.u.HighPart = ft.dwHighDateTime;
  78     RtlLocalTimeToSystemTime( &st, &st2 );
  79
  80     if ((status = NtSetSystemTime(&st2, NULL)))
  81         SetLastError( RtlNtStatusToDosError(status) );
  82     return !status;
  83 }
  84
  85
  86 /***********************************************************************
  87  *           GetSystemTimeAdjustment     (KERNEL32.@)
  88  *
  89  *  Get the period between clock interrupts and the amount the clock
  90  *  is adjusted each interrupt so as to keep it in sync with an external source.
  91  *
  92  * RETURNS
  93  *  TRUE.
  94  *
  95  * BUGS
  96  *  Only the special case of disabled time adjustments is supported.
  97  */
  98 BOOL WINAPI GetSystemTimeAdjustment(
  99     PDWORD lpTimeAdjustment,         /* [out] The clock adjustment per interupt in 100's of nanoseconds. */
 100     PDWORD lpTimeIncrement,          /* [out] The time between clock interupts in 100's of nanoseconds. */
 101     PBOOL  lpTimeAdjustmentDisabled) /* [out] The clock synchonisation has been disabled. */
 102 {
 103     *lpTimeAdjustment = 0;
 104     *lpTimeIncrement = 0;
 105     *lpTimeAdjustmentDisabled = TRUE;
 106     return TRUE;
 107 }
 108
 109
 110 /***********************************************************************
 111  *              SetSystemTime            (KERNEL32.@)
 112  *
 113  *  Set the system time in utc.
 114  *
 115  * RETURNS
 116  *  Success: TRUE. The time was set
 117  *  Failure: FALSE, if the time was invalid or caller does not have
 118  *           permission to change the time.
 119  */
 120 BOOL WINAPI SetSystemTime(
 121     const SYSTEMTIME *systime) /* [in] The desired system time. */
 122 {
 123     FILETIME ft;
 124     LARGE_INTEGER t;
 125     NTSTATUS status;
 126
 127     SystemTimeToFileTime( systime, &ft );
 128     t.u.LowPart = ft.dwLowDateTime;
 129     t.u.HighPart = ft.dwHighDateTime;
 130     if ((status = NtSetSystemTime(&t, NULL)))
 131         SetLastError( RtlNtStatusToDosError(status) );
 132     return !status;
 133 }
 134
 135 /***********************************************************************
 136  *              SetSystemTimeAdjustment  (KERNEL32.@)
 137  *
 138  *  Enables or disables the timing adjustments to the system's clock.
 139  *
 140  * RETURNS
 141  *  Success: TRUE.
 142  *  Failure: FALSE.
 143  */
 144 BOOL WINAPI SetSystemTimeAdjustment(
 145     DWORD dwTimeAdjustment,
 146     BOOL bTimeAdjustmentDisabled)
 147 {
 148     /* Fake function for now... */
 149     FIXME("(%08lx,%d): stub !\n", dwTimeAdjustment, bTimeAdjustmentDisabled);
 150     return TRUE;
 151 }
 152
 153
 154 /***********************************************************************
 155  *              GetTimeZoneInformation  (KERNEL32.@)
 156  *
 157  *  Get information about the current local time zone.
 158  *
 159  * RETURNS
 160  *  Success: TIME_ZONE_ID_STANDARD. tzinfo contains the time zone info.
 161  *  Failure: TIME_ZONE_ID_INVALID.
 162  *  FIXME: return TIME_ZONE_ID_DAYLIGHT when daylight saving is on.
 163  */
 164 DWORD WINAPI GetTimeZoneInformation(
 165     LPTIME_ZONE_INFORMATION tzinfo) /* [out] Destination for time zone information */
 166 {
 167     NTSTATUS status;
 168     if ((status = RtlQueryTimeZoneInformation(tzinfo)))
 169         SetLastError( RtlNtStatusToDosError(status) );
 170     return TIME_ZONE_ID_STANDARD;
 171 }
 172
 173
 174 /***********************************************************************
 175  *              SetTimeZoneInformation  (KERNEL32.@)
 176  *
 177  *  Change the settings of the current local time zone.
 178  *
 179  * RETURNS
 180  *  Success: TRUE. The time zone was updated with the settings from tzinfo
 181  *  Failure: FALSE.
 182  */
 183 BOOL WINAPI SetTimeZoneInformation(
 184     const LPTIME_ZONE_INFORMATION tzinfo) /* [in] The new time zone. */
 185 {
 186     NTSTATUS status;
 187     if ((status = RtlSetTimeZoneInformation(tzinfo)))
 188         SetLastError( RtlNtStatusToDosError(status) );
 189     return !status;
 190 }
 191
 192
 193 /***********************************************************************
 194  *  _DayLightCompareDate
 195  *
 196  *  Compares two dates without looking at the year
 197  *
 198  * RETURNS
 199  *
 200  *  -1 if date < compareDate
 201  *   0 if date == compareDate
 202  *   1 if date > compareDate
 203  *  -2 if an error occures
 204  */
 205
 206 static int _DayLightCompareDate(
 207     const LPSYSTEMTIME date,                       /* [in] The date to compare. */
 208     const LPSYSTEMTIME compareDate)                /* [in] The daylight saving begin or end date */
 209 {
 210     int limit_day;
 211
 212     if (compareDate->wYear != 0)
 213     {
 214         if (date->wMonth < compareDate->wMonth)
 215             return -1; /* We are in a year before the date limit. */
 216
 217         if (date->wMonth > compareDate->wMonth)
 218             return 1; /* We are in a year after the date limit. */
 219     }
 220
 221     if (date->wMonth < compareDate->wMonth)
 222         return -1; /* We are in a month before the date limit. */
 223
 224     if (date->wMonth > compareDate->wMonth)
 225         return 1; /* We are in a month after the date limit. */
 226
 227     if (compareDate->wDayOfWeek <= 6)
 228     {
 229        SYSTEMTIME tmp;
 230        FILETIME tmp_ft;
 231
 232        /* compareDate->wDay is interpreted as number of the week in the month. */
 233        /* 5 means: the last week in the month */
 234        int weekofmonth = compareDate->wDay;
 235
 236          /* calculate day of week for the first day in the month */
 237         memcpy(&tmp, date, sizeof(SYSTEMTIME));
 238         tmp.wDay = 1;
 239         tmp.wDayOfWeek = -1;
 240
 241         if (weekofmonth == 5)
 242         {
 243              /* Go to the beginning of the next month. */
 244             if (++tmp.wMonth > 12)
 245             {
 246                 tmp.wMonth = 1;
 247                 ++tmp.wYear;
 248             }
 249         }
 250
 251         if (!SystemTimeToFileTime(&tmp, &tmp_ft))
 252             return -2;
 253
 254         if (weekofmonth == 5)
 255         {
 256           LONGLONG t, one_day;
 257
 258           t = tmp_ft.dwHighDateTime;
 259           t <<= 32;
 260           t += (UINT)tmp_ft.dwLowDateTime;
 261
 262           /* subtract one day */
 263           one_day = 24*60*60;
 264           one_day *= 10000000;
 265           t -= one_day;
 266
 267           tmp_ft.dwLowDateTime  = (UINT)t;
 268           tmp_ft.dwHighDateTime = (UINT)(t >> 32);
 269         }
 270
 271         if (!FileTimeToSystemTime(&tmp_ft, &tmp))
 272             return -2;
 273
 274        if (weekofmonth == 5)
 275        {
 276           /* calculate the last matching day of the week in this month */
 277           int dif = tmp.wDayOfWeek - compareDate->wDayOfWeek;
 278           if (dif < 0)
 279              dif += 7;
 280
 281           limit_day = tmp.wDay - dif;
 282        }
 283        else
 284        {
 285           /* calculate the matching day of the week in the given week */
 286           int dif = compareDate->wDayOfWeek - tmp.wDayOfWeek;
 287           if (dif < 0)
 288              dif += 7;
 289
 290           limit_day = tmp.wDay + 7*(weekofmonth-1) + dif;
 291        }
 292     }
 293     else
 294     {
 295        limit_day = compareDate->wDay;
 296     }
 297
 298     if (date->wDay < limit_day)
 299         return -1;
 300
 301     if (date->wDay > limit_day)
 302         return 1;
 303
 304     return 0;   /* date is equal to the date limit. */
 305 }
 306
 307
 308 /***********************************************************************
 309  *  _GetTimezoneBias
 310  *
 311  *  Calculates the local time bias for a given time zone
 312  *
 313  * RETURNS
 314  *
 315  *  Returns TRUE when the time zone bias was calculated.
 316  */
 317
 318 static BOOL _GetTimezoneBias(
 319     const LPTIME_ZONE_INFORMATION lpTimeZoneInformation, /* [in] The time zone data.            */
 320     LPSYSTEMTIME                  lpSystemTime,          /* [in] The system time.               */
 321     LONG*                         pBias)                 /* [out] The calulated bias in minutes */
 322 {
 323     int ret;
 324     BOOL beforeStandardDate, afterDaylightDate;
 325     BOOL daylightsaving = FALSE;
 326     LONG bias = lpTimeZoneInformation->Bias;
 327
 328     if (lpTimeZoneInformation->DaylightDate.wMonth != 0)
 329     {
 330         if (lpTimeZoneInformation->StandardDate.wMonth == 0 ||
 331             lpTimeZoneInformation->StandardDate.wDay<1 ||
 332             lpTimeZoneInformation->StandardDate.wDay>5 ||
 333             lpTimeZoneInformation->DaylightDate.wDay<1 ||
 334             lpTimeZoneInformation->DaylightDate.wDay>5)
 335         {
 336             SetLastError(ERROR_INVALID_PARAMETER);
 337             return FALSE;
 338         }
 339
 340          /* check for daylight saving */
 341         ret = _DayLightCompareDate(lpSystemTime, &lpTimeZoneInformation->StandardDate);
 342         if (ret == -2)
 343           return FALSE;
 344
 345         beforeStandardDate = ret < 0;
 346
 347         ret = _DayLightCompareDate(lpSystemTime, &lpTimeZoneInformation->DaylightDate);
 348         if (ret == -2)
 349           return FALSE;
 350
 351         afterDaylightDate = ret >= 0;
 352
 353         if (beforeStandardDate && afterDaylightDate)
 354             daylightsaving = TRUE;
 355     }
 356
 357     if (daylightsaving)
 358         bias += lpTimeZoneInformation->DaylightBias;
 359     else if (lpTimeZoneInformation->StandardDate.wMonth != 0)
 360         bias += lpTimeZoneInformation->StandardBias;
 361
 362     *pBias = bias;
 363
 364     return TRUE;
 365 }
 366
 367
 368 /***********************************************************************
 369  *              SystemTimeToTzSpecificLocalTime  (KERNEL32.@)
 370  *
 371  *  Convert a utc system time to a local time in a given time zone.
 372  *
 373  * RETURNS
 374  *  Success: TRUE. lpLocalTime contains the converted time
 375  *  Failure: FALSE.
 376  */
 377
 378 BOOL WINAPI SystemTimeToTzSpecificLocalTime(
 379     LPTIME_ZONE_INFORMATION lpTimeZoneInformation, /* [in] The desired time zone. */
 380     LPSYSTEMTIME            lpUniversalTime,       /* [in] The utc time to base local time on. */
 381     LPSYSTEMTIME            lpLocalTime)           /* [out] The local time in the time zone. */
 382 {
 383     FILETIME ft;
 384     LONG lBias;
 385     LONGLONG t, bias;
 386     TIME_ZONE_INFORMATION tzinfo;
 387
 388     if (lpTimeZoneInformation != NULL)
 389     {
 390         memcpy(&tzinfo, lpTimeZoneInformation, sizeof(TIME_ZONE_INFORMATION));
 391     }
 392     else
 393     {
 394         if (GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_INVALID)
 395             return FALSE;
 396     }
 397
 398     if (!SystemTimeToFileTime(lpUniversalTime, &ft))
 399         return FALSE;
 400
 401     t = ft.dwHighDateTime;
 402     t <<= 32;
 403     t += (UINT)ft.dwLowDateTime;
 404
 405     if (!_GetTimezoneBias(&tzinfo, lpUniversalTime, &lBias))
 406         return FALSE;
 407
 408     bias = (LONGLONG)lBias * 600000000; /* 60 seconds per minute, 100000 [100-nanoseconds-ticks] per second */
 409     t -= bias;
 410
 411     ft.dwLowDateTime  = (UINT)t;
 412     ft.dwHighDateTime = (UINT)(t >> 32);
 413
 414     return FileTimeToSystemTime(&ft, lpLocalTime);
 415 }
 416
 417
 418 /***********************************************************************
 419  *              TzSpecificLocalTimeToSystemTime  (KERNEL32.@)
 420  *
 421  *  Converts a local time to a time in utc.
 422  *
 423  * RETURNS
 424  *  Success: TRUE. lpUniversalTime contains the converted time
 425  *  Failure: FALSE.
 426  */
 427 BOOL WINAPI TzSpecificLocalTimeToSystemTime(
 428     LPTIME_ZONE_INFORMATION lpTimeZoneInformation, /* [in] The desired time zone. */
 429     LPSYSTEMTIME            lpLocalTime,           /* [in] The local time. */
 430     LPSYSTEMTIME            lpUniversalTime)       /* [out] The calculated utc time. */
 431 {
 432     FILETIME ft;
 433     LONG lBias;
 434     LONGLONG t, bias;
 435     TIME_ZONE_INFORMATION tzinfo;
 436
 437     if (lpTimeZoneInformation != NULL)
 438     {
 439         memcpy(&tzinfo, lpTimeZoneInformation, sizeof(TIME_ZONE_INFORMATION));
 440     }
 441     else
 442     {
 443         if (GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_INVALID)
 444             return FALSE;
 445     }
 446
 447     if (!SystemTimeToFileTime(lpLocalTime, &ft))
 448         return FALSE;
 449
 450     t = ft.dwHighDateTime;
 451     t <<= 32;
 452     t += (UINT)ft.dwLowDateTime;
 453
 454     if (!_GetTimezoneBias(&tzinfo, lpLocalTime, &lBias))
 455         return FALSE;
 456
 457     bias = (LONGLONG)lBias * 600000000; /* 60 seconds per minute, 100000 [100-nanoseconds-ticks] per second */
 458     t += bias;
 459
 460     ft.dwLowDateTime  = (UINT)t;
 461     ft.dwHighDateTime = (UINT)(t >> 32);
 462
 463     return FileTimeToSystemTime(&ft, lpUniversalTime);
 464 }
 465
 466
 467 /***********************************************************************
 468  *              GetSystemTimeAsFileTime  (KERNEL32.@)
 469  *
 470  *  Get the current time in utc format.
 471  *
 472  *  RETURNS
 473  *   Nothing.
 474  */
 475 VOID WINAPI GetSystemTimeAsFileTime(
 476     LPFILETIME time) /* [out] Destination for the current utc time */
 477 {
 478     LARGE_INTEGER t;
 479     NtQuerySystemTime( &t );
 480     time->dwLowDateTime = t.u.LowPart;
 481     time->dwHighDateTime = t.u.HighPart;
 482 }
 483
 484
 485 /*********************************************************************
 486  *      TIME_ClockTimeToFileTime    (olorin@fandra.org, 20-Sep-1998)
 487  *
 488  *  Used by GetProcessTimes to convert clock_t into FILETIME.
 489  *
 490  *      Differences to UnixTimeToFileTime:
 491  *          1) Divided by CLK_TCK
 492  *          2) Time is relative. There is no 'starting date', so there is
 493  *             no need for offset correction, like in UnixTimeToFileTime
 494  */
 495 static void TIME_ClockTimeToFileTime(clock_t unix_time, LPFILETIME filetime)
 496 {
 497     ULONGLONG secs = RtlEnlargedUnsignedMultiply( unix_time, 10000000 );
 498     secs = RtlExtendedLargeIntegerDivide( secs, CLK_TCK, NULL );
 499     filetime->dwLowDateTime  = (DWORD)secs;
 500     filetime->dwHighDateTime = (DWORD)(secs >> 32);
 501 }
 502
 503 /*********************************************************************
 504  *      GetProcessTimes                         (KERNEL32.@)
 505  *
 506  *  Get the user and kernel execution times of a process,
 507  *  along with the creation and exit times if known.
 508  *
 509  * RETURNS
 510  *  TRUE.
 511  *
 512  * NOTES
 513  *  olorin@fandra.org:
 514  *  Would be nice to subtract the cpu time used by Wine at startup.
 515  *  Also, there is a need to separate times used by different applications.
 516  *
 517  * BUGS
 518  *  lpCreationTime and lpExitTime are not initialised in the Wine implementation.
 519  */
 520 BOOL WINAPI GetProcessTimes(
 521     HANDLE     hprocess,       /* [in] The process to be queried (obtained from PROCESS_QUERY_INFORMATION). */
 522     LPFILETIME lpCreationTime, /* [out] The creation time of the process. */
 523     LPFILETIME lpExitTime,     /* [out] The exit time of the process if exited. */
 524     LPFILETIME lpKernelTime,   /* [out] The time spent in kernal routines in 100's of nanoseconds. */
 525     LPFILETIME lpUserTime)     /* [out] The time spent in user routines in 100's of nanoseconds. */
 526 {
 527     struct tms tms;
 528
 529     times(&tms);
 530     TIME_ClockTimeToFileTime(tms.tms_utime,lpUserTime);
 531     TIME_ClockTimeToFileTime(tms.tms_stime,lpKernelTime);
 532     return TRUE;
 533 }
 534
 535 /*********************************************************************
 536  *      GetCalendarInfoA                                (KERNEL32.@)
 537  *
 538  */
 539 int WINAPI GetCalendarInfoA(LCID lcid, CALID Calendar, CALTYPE CalType,
 540                             LPSTR lpCalData, int cchData, LPDWORD lpValue)
 541 {
 542     int ret;
 543     LPWSTR lpCalDataW = NULL;
 544
 545     FIXME("(%08lx,%08lx,%08lx,%p,%d,%p): quarter-stub\n",
 546           lcid, Calendar, CalType, lpCalData, cchData, lpValue);
 547
 548     lcid = ConvertDefaultLocale(lcid);
 549
 550     if (NLS_IsUnicodeOnlyLcid(lcid))
 551     {
 552       SetLastError(ERROR_INVALID_PARAMETER);
 553       return 0;
 554     }
 555
 556     if (cchData &&
 557         !(lpCalDataW = HeapAlloc(GetProcessHeap(), 0, cchData*sizeof(WCHAR))))
 558       return 0;
 559
 560     ret = GetCalendarInfoW(lcid, Calendar, CalType, lpCalDataW, cchData, lpValue);
 561     if(ret && lpCalDataW && lpCalData)
 562       WideCharToMultiByte(CP_ACP, 0, lpCalDataW, cchData, lpCalData, cchData, NULL, NULL);
 563     if(lpCalDataW)
 564       HeapFree(GetProcessHeap(), 0, lpCalDataW);
 565
 566     return ret;
 567 }
 568
 569 /*********************************************************************
 570  *      GetCalendarInfoW                                (KERNEL32.@)
 571  *
 572  * See GetCalendarInfoA.
 573  */
 574 int WINAPI GetCalendarInfoW(LCID Locale, CALID Calendar, CALTYPE CalType,
 575                             LPWSTR lpCalData, int cchData, LPDWORD lpValue)
 576 {
 577     FIXME("(%08lx,%08lx,%08lx,%p,%d,%p): quarter-stub\n",
 578           Locale, Calendar, CalType, lpCalData, cchData, lpValue);
 579
 580     if (CalType & CAL_NOUSEROVERRIDE)
 581         FIXME("flag CAL_NOUSEROVERRIDE used, not fully implemented\n");
 582     if (CalType & CAL_USE_CP_ACP)
 583         FIXME("flag CAL_USE_CP_ACP used, not fully implemented\n");
 584
 585     if (CalType & CAL_RETURN_NUMBER) {
 586         if (lpCalData != NULL)
 587             WARN("lpCalData not NULL (%p) when it should!\n", lpCalData);
 588         if (cchData != 0)
 589             WARN("cchData not 0 (%d) when it should!\n", cchData);
 590     } else {
 591         if (lpValue != NULL)
 592             WARN("lpValue not NULL (%p) when it should!\n", lpValue);
 593     }
 594
 595     /* FIXME: No verification is made yet wrt Locale
 596      * for the CALTYPES not requiring GetLocaleInfoA */
 597     switch (CalType & ~(CAL_NOUSEROVERRIDE|CAL_RETURN_NUMBER|CAL_USE_CP_ACP)) {
 598         case CAL_ICALINTVALUE:
 599             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 600             return E_FAIL;
 601         case CAL_SCALNAME:
 602             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 603             return E_FAIL;
 604         case CAL_IYEAROFFSETRANGE:
 605             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 606             return E_FAIL;
 607         case CAL_SERASTRING:
 608             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 609             return E_FAIL;
 610         case CAL_SSHORTDATE:
 611             return GetLocaleInfoW(Locale, LOCALE_SSHORTDATE, lpCalData, cchData);
 612         case CAL_SLONGDATE:
 613             return GetLocaleInfoW(Locale, LOCALE_SLONGDATE, lpCalData, cchData);
 614         case CAL_SDAYNAME1:
 615             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME1, lpCalData, cchData);
 616         case CAL_SDAYNAME2:
 617             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME2, lpCalData, cchData);
 618         case CAL_SDAYNAME3:
 619             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME3, lpCalData, cchData);
 620         case CAL_SDAYNAME4:
 621             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME4, lpCalData, cchData);
 622         case CAL_SDAYNAME5:
 623             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME5, lpCalData, cchData);
 624         case CAL_SDAYNAME6:
 625             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME6, lpCalData, cchData);
 626         case CAL_SDAYNAME7:
 627             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME7, lpCalData, cchData);
 628         case CAL_SABBREVDAYNAME1:
 629             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME1, lpCalData, cchData);
 630         case CAL_SABBREVDAYNAME2:
 631             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME2, lpCalData, cchData);
 632         case CAL_SABBREVDAYNAME3:
 633             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME3, lpCalData, cchData);
 634         case CAL_SABBREVDAYNAME4:
 635             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME4, lpCalData, cchData);
 636         case CAL_SABBREVDAYNAME5:
 637             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME5, lpCalData, cchData);
 638         case CAL_SABBREVDAYNAME6:
 639             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME6, lpCalData, cchData);
 640         case CAL_SABBREVDAYNAME7:
 641             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME7, lpCalData, cchData);
 642         case CAL_SMONTHNAME1:
 643             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME1, lpCalData, cchData);
 644         case CAL_SMONTHNAME2:
 645             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME2, lpCalData, cchData);
 646         case CAL_SMONTHNAME3:
 647             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME3, lpCalData, cchData);
 648         case CAL_SMONTHNAME4:
 649             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME4, lpCalData, cchData);
 650         case CAL_SMONTHNAME5:
 651             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME5, lpCalData, cchData);
 652         case CAL_SMONTHNAME6:
 653             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME6, lpCalData, cchData);
 654         case CAL_SMONTHNAME7:
 655             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME7, lpCalData, cchData);
 656         case CAL_SMONTHNAME8:
 657             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME8, lpCalData, cchData);
 658         case CAL_SMONTHNAME9:
 659             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME9, lpCalData, cchData);
 660         case CAL_SMONTHNAME10:
 661             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME10, lpCalData, cchData);
 662         case CAL_SMONTHNAME11:
 663             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME11, lpCalData, cchData);
 664         case CAL_SMONTHNAME12:
 665             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME12, lpCalData, cchData);
 666         case CAL_SMONTHNAME13:
 667             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME13, lpCalData, cchData);
 668         case CAL_SABBREVMONTHNAME1:
 669             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME1, lpCalData, cchData);
 670         case CAL_SABBREVMONTHNAME2:
 671             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME2, lpCalData, cchData);
 672         case CAL_SABBREVMONTHNAME3:
 673             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME3, lpCalData, cchData);
 674         case CAL_SABBREVMONTHNAME4:
 675             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME4, lpCalData, cchData);
 676         case CAL_SABBREVMONTHNAME5:
 677             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME5, lpCalData, cchData);
 678         case CAL_SABBREVMONTHNAME6:
 679             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME6, lpCalData, cchData);
 680         case CAL_SABBREVMONTHNAME7:
 681             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME7, lpCalData, cchData);
 682         case CAL_SABBREVMONTHNAME8:
 683             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME8, lpCalData, cchData);
 684         case CAL_SABBREVMONTHNAME9:
 685             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME9, lpCalData, cchData);
 686         case CAL_SABBREVMONTHNAME10:
 687             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME10, lpCalData, cchData);
 688         case CAL_SABBREVMONTHNAME11:
 689             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME11, lpCalData, cchData);
 690         case CAL_SABBREVMONTHNAME12:
 691             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME12, lpCalData, cchData);
 692         case CAL_SABBREVMONTHNAME13:
 693             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME13, lpCalData, cchData);
 694         case CAL_SYEARMONTH:
 695             return GetLocaleInfoW(Locale, LOCALE_SYEARMONTH, lpCalData, cchData);
 696         case CAL_ITWODIGITYEARMAX:
 697             if (lpValue) *lpValue = CALINFO_MAX_YEAR;
 698             break;
 699         default: MESSAGE("Unknown caltype %ld\n",CalType & 0xffff);
 700                  return E_FAIL;
 701     }
 702     return 0;
 703 }
 704
 705 /*********************************************************************
 706  *      SetCalendarInfoA                                (KERNEL32.@)
 707  *
 708  */
 709 int WINAPI      SetCalendarInfoA(LCID Locale, CALID Calendar, CALTYPE CalType, LPCSTR lpCalData)
 710 {
 711     FIXME("(%08lx,%08lx,%08lx,%s): stub\n",
 712           Locale, Calendar, CalType, debugstr_a(lpCalData));
 713     return 0;
 714 }
 715
 716 /*********************************************************************
 717  *      SetCalendarInfoW                                (KERNEL32.@)
 718  *
 719  * See SetCalendarInfoA.
 720  */
 721 int WINAPI      SetCalendarInfoW(LCID Locale, CALID Calendar, CALTYPE CalType, LPCWSTR lpCalData)
 722 {
 723     FIXME("(%08lx,%08lx,%08lx,%s): stub\n",
 724           Locale, Calendar, CalType, debugstr_w(lpCalData));
 725     return 0;
 726 }
 727
 728 /*********************************************************************
 729  *      LocalFileTimeToFileTime                         (KERNEL32.@)
 730  */
 731 BOOL WINAPI LocalFileTimeToFileTime( const FILETIME *localft, LPFILETIME utcft )
 732 {
 733     NTSTATUS status;
 734     LARGE_INTEGER local, utc;
 735
 736     local.u.LowPart = localft->dwLowDateTime;
 737     local.u.HighPart = localft->dwHighDateTime;
 738     if (!(status = RtlLocalTimeToSystemTime( &local, &utc )))
 739     {
 740         utcft->dwLowDateTime = utc.u.LowPart;
 741         utcft->dwHighDateTime = utc.u.HighPart;
 742     }
 743     else SetLastError( RtlNtStatusToDosError(status) );
 744
 745     return !status;
 746 }
 747
 748 /*********************************************************************
 749  *      FileTimeToLocalFileTime                         (KERNEL32.@)
 750  */
 751 BOOL WINAPI FileTimeToLocalFileTime( const FILETIME *utcft, LPFILETIME localft )
 752 {
 753     NTSTATUS status;
 754     LARGE_INTEGER local, utc;
 755
 756     utc.u.LowPart = utcft->dwLowDateTime;
 757     utc.u.HighPart = utcft->dwHighDateTime;
 758     if (!(status = RtlSystemTimeToLocalTime( &utc, &local )))
 759     {
 760         localft->dwLowDateTime = local.u.LowPart;
 761         localft->dwHighDateTime = local.u.HighPart;
 762     }
 763     else SetLastError( RtlNtStatusToDosError(status) );
 764
 765     return !status;
 766 }
 767
 768 /*********************************************************************
 769  *      FileTimeToSystemTime                            (KERNEL32.@)
 770  */
 771 BOOL WINAPI FileTimeToSystemTime( const FILETIME *ft, LPSYSTEMTIME syst )
 772 {
 773     TIME_FIELDS tf;
 774     LARGE_INTEGER t;
 775
 776     t.u.LowPart = ft->dwLowDateTime;
 777     t.u.HighPart = ft->dwHighDateTime;
 778     RtlTimeToTimeFields(&t, &tf);
 779
 780     syst->wYear = tf.Year;
 781     syst->wMonth = tf.Month;
 782     syst->wDay = tf.Day;
 783     syst->wHour = tf.Hour;
 784     syst->wMinute = tf.Minute;
 785     syst->wSecond = tf.Second;
 786     syst->wMilliseconds = tf.Milliseconds;
 787     syst->wDayOfWeek = tf.Weekday;
 788     return TRUE;
 789 }
 790
 791 /*********************************************************************
 792  *      SystemTimeToFileTime                            (KERNEL32.@)
 793  */
 794 BOOL WINAPI SystemTimeToFileTime( const SYSTEMTIME *syst, LPFILETIME ft )
 795 {
 796     TIME_FIELDS tf;
 797     LARGE_INTEGER t;
 798
 799     tf.Year = syst->wYear;
 800     tf.Month = syst->wMonth;
 801     tf.Day = syst->wDay;
 802     tf.Hour = syst->wHour;
 803     tf.Minute = syst->wMinute;
 804     tf.Second = syst->wSecond;
 805     tf.Milliseconds = syst->wMilliseconds;
 806
 807     RtlTimeFieldsToTime(&tf, &t);
 808     ft->dwLowDateTime = t.u.LowPart;
 809     ft->dwHighDateTime = t.u.HighPart;
 810     return TRUE;
 811 }
 812
 813 /*********************************************************************
 814  *      CompareFileTime                                 (KERNEL32.@)
 815  *
 816  * Compare two FILETIME's to each other.
 817  *
 818  * PARAMS
 819  *  x [I] First time
 820  *  y [I] time to compare to x
 821  *
 822  * RETURNS
 823  *  -1, 0, or 1 indicating that x is less than, equal to, or greater
 824  *  than y respectively.
 825  */
 826 INT WINAPI CompareFileTime( const FILETIME *x, const FILETIME *y )
 827 {
 828     if (!x || !y) return -1;
 829
 830     if (x->dwHighDateTime > y->dwHighDateTime)
 831         return 1;
 832     if (x->dwHighDateTime < y->dwHighDateTime)
 833         return -1;
 834     if (x->dwLowDateTime > y->dwLowDateTime)
 835         return 1;
 836     if (x->dwLowDateTime < y->dwLowDateTime)
 837         return -1;
 838     return 0;
 839 }
 840
 841 /*********************************************************************
 842  *      GetLocalTime                                    (KERNEL32.@)
 843  *
 844  * Get the current local time.
 845  *
 846  * RETURNS
 847  *  Nothing.
 848  */
 849 VOID WINAPI GetLocalTime(LPSYSTEMTIME systime) /* [O] Destination for current time */
 850 {
 851     FILETIME lft;
 852     LARGE_INTEGER ft, ft2;
 853
 854     NtQuerySystemTime(&ft);
 855     RtlSystemTimeToLocalTime(&ft, &ft2);
 856     lft.dwLowDateTime = ft2.u.LowPart;
 857     lft.dwHighDateTime = ft2.u.HighPart;
 858     FileTimeToSystemTime(&lft, systime);
 859 }
 860
 861 /*********************************************************************
 862  *      GetSystemTime                                   (KERNEL32.@)
 863  *
 864  * Get the current system time.
 865  *
 866  * RETURNS
 867  *  Nothing.
 868  */
 869 VOID WINAPI GetSystemTime(LPSYSTEMTIME systime) /* [O] Destination for current time */
 870 {
 871     FILETIME ft;
 872     LARGE_INTEGER t;
 873
 874     NtQuerySystemTime(&t);
 875     ft.dwLowDateTime = t.u.LowPart;
 876     ft.dwHighDateTime = t.u.HighPart;
 877     FileTimeToSystemTime(&ft, systime);
 878 }
 879
 880 /*********************************************************************
 881  *      GetDaylightFlag                                   (KERNEL32.@)
 882  *
 883  *      returns TRUE if daylight saving time is in operation
 884  *
 885  *      Note: this function is called from the Win98's control applet
 886  *      timedate.cpl
 887  */
 888 BOOL WINAPI GetDaylightFlag(void)
 889 {
 890     time_t t = time(NULL);
 891     struct tm *ptm = localtime( &t);
 892     return ptm->tm_isdst > 0;
 893 }