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 #ifdef HAVE_SYS_LIMITS_H
  37 #include <sys/limits.h>
  38 #elif defined(HAVE_MACHINE_LIMITS_H)
  39 #include <machine/limits.h>
  40 #endif
  41
  42 #define NONAMELESSUNION
  43 #define NONAMELESSSTRUCT
  44 #include "windef.h"
  45 #include "winbase.h"
  46 #include "winternl.h"
  47 #include "ntstatus.h"
  48 #include "kernel_private.h"
  49 #include "wine/unicode.h"
  50 #include "wine/debug.h"
  51
  52 WINE_DEFAULT_DEBUG_CHANNEL(time);
  53
  54 /* maximum time adjustment in seconds for SetLocalTime and SetSystemTime */
  55 #define SETTIME_MAX_ADJUST 120
  56 #define CALINFO_MAX_YEAR 2029
  57
  58 #define LL2FILETIME( ll, pft )\
  59     (pft)->dwLowDateTime = (UINT)(ll); \
  60     (pft)->dwHighDateTime = (UINT)((ll) >> 32);
  61 #define FILETIME2LL( pft, ll) \
  62     ll = (((LONGLONG)((pft)->dwHighDateTime))<<32) + (pft)-> dwLowDateTime ;
  63
  64
  65 static const int MonthLengths[2][12] =
  66 {
  67         { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
  68         { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
  69 };
  70
  71 static inline int IsLeapYear(int Year)
  72 {
  73         return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0) ? 1 : 0;
  74 }
  75
  76 /***********************************************************************
  77  *  TIME_DayLightCompareDate
  78  *
  79  *  Compares two dates without looking at the year
  80  *
  81  * RETURNS
  82  *
  83  *  -1 if date < compareDate
  84  *   0 if date == compareDate
  85  *   1 if date > compareDate
  86  *  -2 if an error occurs
  87  */
  88 static int TIME_DayLightCompareDate(
  89     const SYSTEMTIME *date,        /* [in] The local time to compare. */
  90     const SYSTEMTIME *compareDate) /* [in] The daylight saving begin
  91                                        or end date */
  92 {
  93     int limit_day, dayinsecs;
  94
  95     if (date->wMonth < compareDate->wMonth)
  96         return -1; /* We are in a month before the date limit. */
  97
  98     if (date->wMonth > compareDate->wMonth)
  99         return 1; /* We are in a month after the date limit. */
 100
 101     if (compareDate->wDayOfWeek <= 6)
 102     {
 103         WORD First;
 104         /* compareDate->wDay is interpreted as number of the week in the month
 105          * 5 means: the last week in the month */
 106         int weekofmonth = compareDate->wDay;
 107           /* calculate the day of the first DayOfWeek in the month */
 108         First = ( 6 + compareDate->wDayOfWeek - date->wDayOfWeek + date->wDay
 109                ) % 7 + 1;
 110         limit_day = First + 7 * (weekofmonth - 1);
 111         /* check needed for the 5th weekday of the month */
 112         if(limit_day > MonthLengths[date->wMonth==2 && IsLeapYear(date->wYear)]
 113                 [date->wMonth - 1])
 114             limit_day -= 7;
 115     }
 116     else
 117     {
 118        limit_day = compareDate->wDay;
 119     }
 120
 121     /* convert to seconds */
 122     limit_day = ((limit_day * 24  + compareDate->wHour) * 60 +
 123             compareDate->wMinute ) * 60;
 124     dayinsecs = ((date->wDay * 24  + date->wHour) * 60 +
 125             date->wMinute ) * 60 + date->wSecond;
 126     /* and compare */
 127     return dayinsecs < limit_day ? -1 :
 128            dayinsecs > limit_day ? 1 :
 129            0;   /* date is equal to the date limit. */
 130 }
 131
 132 /***********************************************************************
 133  *  TIME_CompTimeZoneID
 134  *
 135  *  Computes the local time bias for a given time and time zone
 136  *
 137  *  Returns:
 138  *      TIME_ZONE_ID_INVALID    An error occurred
 139  *      TIME_ZONE_ID_UNKNOWN    There are no transition time known
 140  *      TIME_ZONE_ID_STANDARD   Current time is standard time
 141  *      TIME_ZONE_ID_DAYLIGHT   Current time is dayligh saving time
 142  */
 143 static BOOL TIME_CompTimeZoneID (
 144     const TIME_ZONE_INFORMATION *pTZinfo, /* [in] The time zone data. */
 145     FILETIME      *lpFileTime,            /* [in] The system or local time. */
 146     BOOL           islocal                /* [in] it is local time */
 147     )
 148 {
 149     int ret;
 150     BOOL beforeStandardDate, afterDaylightDate;
 151     DWORD retval = TIME_ZONE_ID_INVALID;
 152     LONGLONG llTime = 0; /* initialized to prevent gcc complaining */
 153     SYSTEMTIME SysTime;
 154     FILETIME ftTemp;
 155
 156     if (pTZinfo->DaylightDate.wMonth != 0)
 157     {
 158         if (pTZinfo->StandardDate.wMonth == 0 ||
 159             pTZinfo->StandardDate.wDay<1 ||
 160             pTZinfo->StandardDate.wDay>5 ||
 161             pTZinfo->DaylightDate.wDay<1 ||
 162             pTZinfo->DaylightDate.wDay>5)
 163         {
 164             SetLastError(ERROR_INVALID_PARAMETER);
 165             return TIME_ZONE_ID_INVALID;
 166         }
 167
 168         if (!islocal) {
 169             FILETIME2LL( lpFileTime, llTime );
 170             llTime -= ( pTZinfo->Bias + pTZinfo->DaylightBias )
 171                 * (LONGLONG)600000000;
 172             LL2FILETIME( llTime, &ftTemp)
 173             lpFileTime = &ftTemp;
 174         }
 175
 176         FileTimeToSystemTime(lpFileTime, &SysTime);
 177
 178          /* check for daylight saving */
 179         ret = TIME_DayLightCompareDate( &SysTime, &pTZinfo->StandardDate);
 180         if (ret == -2)
 181           return TIME_ZONE_ID_INVALID;
 182
 183         beforeStandardDate = ret < 0;
 184
 185         if (!islocal) {
 186             llTime -= ( pTZinfo->StandardBias - pTZinfo->DaylightBias )
 187                 * (LONGLONG)600000000;
 188             LL2FILETIME( llTime, &ftTemp)
 189             FileTimeToSystemTime(lpFileTime, &SysTime);
 190         }
 191
 192         ret = TIME_DayLightCompareDate( &SysTime, &pTZinfo->DaylightDate);
 193         if (ret == -2)
 194           return TIME_ZONE_ID_INVALID;
 195
 196         afterDaylightDate = ret >= 0;
 197
 198         retval = TIME_ZONE_ID_STANDARD;
 199         if( pTZinfo->DaylightDate.wMonth <  pTZinfo->StandardDate.wMonth ) {
 200             /* Northern hemisphere */
 201             if( beforeStandardDate && afterDaylightDate )
 202                 retval = TIME_ZONE_ID_DAYLIGHT;
 203         } else    /* Down south */
 204             if( beforeStandardDate || afterDaylightDate )
 205             retval = TIME_ZONE_ID_DAYLIGHT;
 206     } else
 207         /* No transition date */
 208         retval = TIME_ZONE_ID_UNKNOWN;
 209
 210     return retval;
 211 }
 212
 213 /***********************************************************************
 214  *  TIME_TimeZoneID
 215  *
 216  *  Calculates whether daylight saving is on now.
 217  *
 218  *  Returns:
 219  *      TIME_ZONE_ID_INVALID    An error occurred
 220  *      TIME_ZONE_ID_UNKNOWN    There are no transition time known
 221  *      TIME_ZONE_ID_STANDARD   Current time is standard time
 222  *      TIME_ZONE_ID_DAYLIGHT   Current time is dayligh saving time
 223  */
 224 static DWORD TIME_ZoneID(
 225         const TIME_ZONE_INFORMATION  *pTzi   /* Timezone info */
 226         )
 227 {
 228     FILETIME ftTime;
 229     GetSystemTimeAsFileTime( &ftTime);
 230     return TIME_CompTimeZoneID( pTzi, &ftTime, FALSE);
 231 }
 232
 233 /***********************************************************************
 234  *  TIME_GetTimezoneBias
 235  *
 236  *  Calculates the local time bias for a given time zone
 237  *
 238  * RETURNS
 239  *
 240  *  Returns TRUE when the time zone bias was calculated.
 241  */
 242 static BOOL TIME_GetTimezoneBias(
 243     const TIME_ZONE_INFORMATION
 244                   *pTZinfo, /* [in] The time zone data. */
 245     FILETIME      *lpFileTime,         /* [in] The system or local time. */
 246     BOOL           islocal,            /* [in] it is local time */
 247     LONG          *pBias               /* [out] The calculated bias in minutes */
 248     )
 249 {
 250     LONG bias = pTZinfo->Bias;
 251     DWORD tzid = TIME_CompTimeZoneID( pTZinfo, lpFileTime, islocal);
 252
 253     if( tzid == TIME_ZONE_ID_INVALID)
 254         return FALSE;
 255     if (tzid == TIME_ZONE_ID_DAYLIGHT)
 256         bias += pTZinfo->DaylightBias;
 257     else if (tzid == TIME_ZONE_ID_STANDARD)
 258         bias += pTZinfo->StandardBias;
 259     *pBias = bias;
 260     return TRUE;
 261 }
 262
 263
 264 /***********************************************************************
 265  *              SetLocalTime            (KERNEL32.@)
 266  *
 267  *  Set the local time using current time zone and daylight
 268  *  savings settings.
 269  *
 270  * RETURNS
 271  *  Success: TRUE. The time was set
 272  *  Failure: FALSE, if the time was invalid or caller does not have
 273  *           permission to change the time.
 274  */
 275 BOOL WINAPI SetLocalTime(
 276     const SYSTEMTIME *systime) /* [in] The desired local time. */
 277 {
 278     FILETIME ft;
 279     LARGE_INTEGER st, st2;
 280     NTSTATUS status;
 281
 282     if( !SystemTimeToFileTime( systime, &ft ))
 283         return FALSE;
 284     st.u.LowPart = ft.dwLowDateTime;
 285     st.u.HighPart = ft.dwHighDateTime;
 286     RtlLocalTimeToSystemTime( &st, &st2 );
 287
 288     if ((status = NtSetSystemTime(&st2, NULL)))
 289         SetLastError( RtlNtStatusToDosError(status) );
 290     return !status;
 291 }
 292
 293
 294 /***********************************************************************
 295  *           GetSystemTimeAdjustment     (KERNEL32.@)
 296  *
 297  *  Get the period between clock interrupts and the amount the clock
 298  *  is adjusted each interrupt so as to keep it in sync with an external source.
 299  *
 300  * RETURNS
 301  *  TRUE.
 302  *
 303  * BUGS
 304  *  Only the special case of disabled time adjustments is supported.
 305  */
 306 BOOL WINAPI GetSystemTimeAdjustment(
 307     PDWORD lpTimeAdjustment,         /* [out] The clock adjustment per interrupt in 100's of nanoseconds. */
 308     PDWORD lpTimeIncrement,          /* [out] The time between clock interrupts in 100's of nanoseconds. */
 309     PBOOL  lpTimeAdjustmentDisabled) /* [out] The clock synchronisation has been disabled. */
 310 {
 311     *lpTimeAdjustment = 0;
 312     *lpTimeIncrement = 0;
 313     *lpTimeAdjustmentDisabled = TRUE;
 314     return TRUE;
 315 }
 316
 317
 318 /***********************************************************************
 319  *              SetSystemTime            (KERNEL32.@)
 320  *
 321  *  Set the system time in utc.
 322  *
 323  * RETURNS
 324  *  Success: TRUE. The time was set
 325  *  Failure: FALSE, if the time was invalid or caller does not have
 326  *           permission to change the time.
 327  */
 328 BOOL WINAPI SetSystemTime(
 329     const SYSTEMTIME *systime) /* [in] The desired system time. */
 330 {
 331     FILETIME ft;
 332     LARGE_INTEGER t;
 333     NTSTATUS status;
 334
 335     if( !SystemTimeToFileTime( systime, &ft ))
 336         return FALSE;
 337     t.u.LowPart = ft.dwLowDateTime;
 338     t.u.HighPart = ft.dwHighDateTime;
 339     if ((status = NtSetSystemTime(&t, NULL)))
 340         SetLastError( RtlNtStatusToDosError(status) );
 341     return !status;
 342 }
 343
 344 /***********************************************************************
 345  *              SetSystemTimeAdjustment  (KERNEL32.@)
 346  *
 347  *  Enables or disables the timing adjustments to the system's clock.
 348  *
 349  * RETURNS
 350  *  Success: TRUE.
 351  *  Failure: FALSE.
 352  */
 353 BOOL WINAPI SetSystemTimeAdjustment(
 354     DWORD dwTimeAdjustment,
 355     BOOL bTimeAdjustmentDisabled)
 356 {
 357     /* Fake function for now... */
 358     FIXME("(%08lx,%d): stub !\n", dwTimeAdjustment, bTimeAdjustmentDisabled);
 359     return TRUE;
 360 }
 361
 362 /***********************************************************************
 363  *              GetTimeZoneInformation  (KERNEL32.@)
 364  *
 365  *  Get information about the current local time zone.
 366  *
 367  * RETURNS
 368  *      TIME_ZONE_ID_INVALID    An error occurred
 369  *      TIME_ZONE_ID_UNKNOWN    There are no transition time known
 370  *      TIME_ZONE_ID_STANDARD   Current time is standard time
 371  *      TIME_ZONE_ID_DAYLIGHT   Current time is dayligh saving time
 372  */
 373 DWORD WINAPI GetTimeZoneInformation(
 374     LPTIME_ZONE_INFORMATION tzinfo) /* [out] Destination for time zone information */
 375 {
 376     NTSTATUS status;
 377
 378     status = RtlQueryTimeZoneInformation( (RTL_TIME_ZONE_INFORMATION*)tzinfo );
 379     if ( status != STATUS_SUCCESS )
 380     {
 381         SetLastError( RtlNtStatusToDosError(status) );
 382         return TIME_ZONE_ID_INVALID;
 383     }
 384     return TIME_ZoneID( tzinfo );
 385 }
 386
 387 /***********************************************************************
 388  *              SetTimeZoneInformation  (KERNEL32.@)
 389  *
 390  *  Change the settings of the current local time zone.
 391  *
 392  * RETURNS
 393  *  Success: TRUE. The time zone was updated with the settings from tzinfo
 394  *  Failure: FALSE.
 395  */
 396 BOOL WINAPI SetTimeZoneInformation(
 397     const TIME_ZONE_INFORMATION *tzinfo) /* [in] The new time zone. */
 398 {
 399     NTSTATUS status;
 400     status = RtlSetTimeZoneInformation( (RTL_TIME_ZONE_INFORMATION*) tzinfo );
 401     if ( status != STATUS_SUCCESS )
 402         SetLastError( RtlNtStatusToDosError(status) );
 403     return !status;
 404 }
 405
 406 /***********************************************************************
 407  *              SystemTimeToTzSpecificLocalTime  (KERNEL32.@)
 408  *
 409  *  Convert a utc system time to a local time in a given time zone.
 410  *
 411  * RETURNS
 412  *  Success: TRUE. lpLocalTime contains the converted time
 413  *  Failure: FALSE.
 414  */
 415
 416 BOOL WINAPI SystemTimeToTzSpecificLocalTime(
 417     LPTIME_ZONE_INFORMATION
 418            lpTimeZoneInformation, /* [in] The desired time zone. */
 419     LPSYSTEMTIME lpUniversalTime, /* [in] The utc time to base local time on. */
 420     LPSYSTEMTIME lpLocalTime)     /* [out] The local time in the time zone. */
 421 {
 422     FILETIME ft;
 423     LONG lBias;
 424     LONGLONG llTime;
 425     TIME_ZONE_INFORMATION tzinfo;
 426
 427     if (lpTimeZoneInformation != NULL)
 428     {
 429         memcpy(&tzinfo, lpTimeZoneInformation, sizeof(TIME_ZONE_INFORMATION));
 430     }
 431     else
 432     {
 433         if (GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_INVALID)
 434             return FALSE;
 435     }
 436
 437     if (!SystemTimeToFileTime(lpUniversalTime, &ft))
 438         return FALSE;
 439     FILETIME2LL( &ft, llTime)
 440     if (!TIME_GetTimezoneBias(&tzinfo, &ft, FALSE, &lBias))
 441         return FALSE;
 442     /* convert minutes to 100-nanoseconds-ticks */
 443     llTime -= (LONGLONG)lBias * 600000000;
 444     LL2FILETIME( llTime, &ft)
 445
 446     return FileTimeToSystemTime(&ft, lpLocalTime);
 447 }
 448
 449
 450 /***********************************************************************
 451  *              TzSpecificLocalTimeToSystemTime  (KERNEL32.@)
 452  *
 453  *  Converts a local time to a time in utc.
 454  *
 455  * RETURNS
 456  *  Success: TRUE. lpUniversalTime contains the converted time
 457  *  Failure: FALSE.
 458  */
 459 BOOL WINAPI TzSpecificLocalTimeToSystemTime(
 460     LPTIME_ZONE_INFORMATION lpTimeZoneInformation, /* [in] The desired time zone. */
 461     LPSYSTEMTIME            lpLocalTime,           /* [in] The local time. */
 462     LPSYSTEMTIME            lpUniversalTime)       /* [out] The calculated utc time. */
 463 {
 464     FILETIME ft;
 465     LONG lBias;
 466     LONGLONG t;
 467     TIME_ZONE_INFORMATION tzinfo;
 468
 469     if (lpTimeZoneInformation != NULL)
 470     {
 471         memcpy(&tzinfo, lpTimeZoneInformation, sizeof(TIME_ZONE_INFORMATION));
 472     }
 473     else
 474     {
 475         if (GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_INVALID)
 476             return FALSE;
 477     }
 478
 479     if (!SystemTimeToFileTime(lpLocalTime, &ft))
 480         return FALSE;
 481     FILETIME2LL( &ft, t)
 482     if (!TIME_GetTimezoneBias(&tzinfo, &ft, TRUE, &lBias))
 483         return FALSE;
 484     /* convert minutes to 100-nanoseconds-ticks */
 485     t += (LONGLONG)lBias * 600000000;
 486     LL2FILETIME( t, &ft)
 487     return FileTimeToSystemTime(&ft, lpUniversalTime);
 488 }
 489
 490
 491 /***********************************************************************
 492  *              GetSystemTimeAsFileTime  (KERNEL32.@)
 493  *
 494  *  Get the current time in utc format.
 495  *
 496  *  RETURNS
 497  *   Nothing.
 498  */
 499 VOID WINAPI GetSystemTimeAsFileTime(
 500     LPFILETIME time) /* [out] Destination for the current utc time */
 501 {
 502     LARGE_INTEGER t;
 503     NtQuerySystemTime( &t );
 504     time->dwLowDateTime = t.u.LowPart;
 505     time->dwHighDateTime = t.u.HighPart;
 506 }
 507
 508
 509 /*********************************************************************
 510  *      TIME_ClockTimeToFileTime    (olorin@fandra.org, 20-Sep-1998)
 511  *
 512  *  Used by GetProcessTimes to convert clock_t into FILETIME.
 513  *
 514  *      Differences to UnixTimeToFileTime:
 515  *          1) Divided by CLK_TCK
 516  *          2) Time is relative. There is no 'starting date', so there is
 517  *             no need for offset correction, like in UnixTimeToFileTime
 518  */
 519 #ifndef CLK_TCK
 520 # define CLK_TCK CLOCKS_PER_SEC
 521 #endif
 522 static void TIME_ClockTimeToFileTime(clock_t unix_time, LPFILETIME filetime)
 523 {
 524     ULONGLONG secs = RtlEnlargedUnsignedMultiply( unix_time, 10000000 );
 525     secs = RtlExtendedLargeIntegerDivide( secs, CLK_TCK, NULL );
 526     filetime->dwLowDateTime  = (DWORD)secs;
 527     filetime->dwHighDateTime = (DWORD)(secs >> 32);
 528 }
 529
 530 /*********************************************************************
 531  *      GetProcessTimes                         (KERNEL32.@)
 532  *
 533  *  Get the user and kernel execution times of a process,
 534  *  along with the creation and exit times if known.
 535  *
 536  * RETURNS
 537  *  TRUE.
 538  *
 539  * NOTES
 540  *  olorin@fandra.org:
 541  *  Would be nice to subtract the cpu time used by Wine at startup.
 542  *  Also, there is a need to separate times used by different applications.
 543  *
 544  * BUGS
 545  *  lpCreationTime and lpExitTime are not initialised in the Wine implementation.
 546  */
 547 BOOL WINAPI GetProcessTimes(
 548     HANDLE     hprocess,       /* [in] The process to be queried (obtained from PROCESS_QUERY_INFORMATION). */
 549     LPFILETIME lpCreationTime, /* [out] The creation time of the process. */
 550     LPFILETIME lpExitTime,     /* [out] The exit time of the process if exited. */
 551     LPFILETIME lpKernelTime,   /* [out] The time spent in kernel routines in 100's of nanoseconds. */
 552     LPFILETIME lpUserTime)     /* [out] The time spent in user routines in 100's of nanoseconds. */
 553 {
 554     struct tms tms;
 555
 556     times(&tms);
 557     TIME_ClockTimeToFileTime(tms.tms_utime,lpUserTime);
 558     TIME_ClockTimeToFileTime(tms.tms_stime,lpKernelTime);
 559     return TRUE;
 560 }
 561
 562 /*********************************************************************
 563  *      GetCalendarInfoA                                (KERNEL32.@)
 564  *
 565  */
 566 int WINAPI GetCalendarInfoA(LCID lcid, CALID Calendar, CALTYPE CalType,
 567                             LPSTR lpCalData, int cchData, LPDWORD lpValue)
 568 {
 569     int ret;
 570     LPWSTR lpCalDataW = NULL;
 571
 572     lcid = ConvertDefaultLocale(lcid);
 573
 574     if (NLS_IsUnicodeOnlyLcid(lcid))
 575     {
 576       SetLastError(ERROR_INVALID_PARAMETER);
 577       return 0;
 578     }
 579
 580     if (cchData &&
 581         !(lpCalDataW = HeapAlloc(GetProcessHeap(), 0, cchData*sizeof(WCHAR))))
 582       return 0;
 583
 584     ret = GetCalendarInfoW(lcid, Calendar, CalType, lpCalDataW, cchData, lpValue);
 585     if(ret && lpCalDataW && lpCalData)
 586       WideCharToMultiByte(CP_ACP, 0, lpCalDataW, cchData, lpCalData, cchData, NULL, NULL);
 587     HeapFree(GetProcessHeap(), 0, lpCalDataW);
 588
 589     return ret;
 590 }
 591
 592 /*********************************************************************
 593  *      GetCalendarInfoW                                (KERNEL32.@)
 594  *
 595  * See GetCalendarInfoA.
 596  */
 597 int WINAPI GetCalendarInfoW(LCID Locale, CALID Calendar, CALTYPE CalType,
 598                             LPWSTR lpCalData, int cchData, LPDWORD lpValue)
 599 {
 600     if (CalType & CAL_NOUSEROVERRIDE)
 601         FIXME("flag CAL_NOUSEROVERRIDE used, not fully implemented\n");
 602     if (CalType & CAL_USE_CP_ACP)
 603         FIXME("flag CAL_USE_CP_ACP used, not fully implemented\n");
 604
 605     if (CalType & CAL_RETURN_NUMBER) {
 606         if (lpCalData != NULL)
 607             WARN("lpCalData not NULL (%p) when it should!\n", lpCalData);
 608         if (cchData != 0)
 609             WARN("cchData not 0 (%d) when it should!\n", cchData);
 610     } else {
 611         if (lpValue != NULL)
 612             WARN("lpValue not NULL (%p) when it should!\n", lpValue);
 613     }
 614
 615     /* FIXME: No verification is made yet wrt Locale
 616      * for the CALTYPES not requiring GetLocaleInfoA */
 617     switch (CalType & ~(CAL_NOUSEROVERRIDE|CAL_RETURN_NUMBER|CAL_USE_CP_ACP)) {
 618         case CAL_ICALINTVALUE:
 619             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 620             return E_FAIL;
 621         case CAL_SCALNAME:
 622             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 623             return E_FAIL;
 624         case CAL_IYEAROFFSETRANGE:
 625             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 626             return E_FAIL;
 627         case CAL_SERASTRING:
 628             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 629             return E_FAIL;
 630         case CAL_SSHORTDATE:
 631             return GetLocaleInfoW(Locale, LOCALE_SSHORTDATE, lpCalData, cchData);
 632         case CAL_SLONGDATE:
 633             return GetLocaleInfoW(Locale, LOCALE_SLONGDATE, lpCalData, cchData);
 634         case CAL_SDAYNAME1:
 635             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME1, lpCalData, cchData);
 636         case CAL_SDAYNAME2:
 637             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME2, lpCalData, cchData);
 638         case CAL_SDAYNAME3:
 639             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME3, lpCalData, cchData);
 640         case CAL_SDAYNAME4:
 641             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME4, lpCalData, cchData);
 642         case CAL_SDAYNAME5:
 643             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME5, lpCalData, cchData);
 644         case CAL_SDAYNAME6:
 645             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME6, lpCalData, cchData);
 646         case CAL_SDAYNAME7:
 647             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME7, lpCalData, cchData);
 648         case CAL_SABBREVDAYNAME1:
 649             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME1, lpCalData, cchData);
 650         case CAL_SABBREVDAYNAME2:
 651             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME2, lpCalData, cchData);
 652         case CAL_SABBREVDAYNAME3:
 653             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME3, lpCalData, cchData);
 654         case CAL_SABBREVDAYNAME4:
 655             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME4, lpCalData, cchData);
 656         case CAL_SABBREVDAYNAME5:
 657             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME5, lpCalData, cchData);
 658         case CAL_SABBREVDAYNAME6:
 659             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME6, lpCalData, cchData);
 660         case CAL_SABBREVDAYNAME7:
 661             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME7, lpCalData, cchData);
 662         case CAL_SMONTHNAME1:
 663             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME1, lpCalData, cchData);
 664         case CAL_SMONTHNAME2:
 665             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME2, lpCalData, cchData);
 666         case CAL_SMONTHNAME3:
 667             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME3, lpCalData, cchData);
 668         case CAL_SMONTHNAME4:
 669             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME4, lpCalData, cchData);
 670         case CAL_SMONTHNAME5:
 671             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME5, lpCalData, cchData);
 672         case CAL_SMONTHNAME6:
 673             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME6, lpCalData, cchData);
 674         case CAL_SMONTHNAME7:
 675             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME7, lpCalData, cchData);
 676         case CAL_SMONTHNAME8:
 677             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME8, lpCalData, cchData);
 678         case CAL_SMONTHNAME9:
 679             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME9, lpCalData, cchData);
 680         case CAL_SMONTHNAME10:
 681             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME10, lpCalData, cchData);
 682         case CAL_SMONTHNAME11:
 683             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME11, lpCalData, cchData);
 684         case CAL_SMONTHNAME12:
 685             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME12, lpCalData, cchData);
 686         case CAL_SMONTHNAME13:
 687             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME13, lpCalData, cchData);
 688         case CAL_SABBREVMONTHNAME1:
 689             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME1, lpCalData, cchData);
 690         case CAL_SABBREVMONTHNAME2:
 691             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME2, lpCalData, cchData);
 692         case CAL_SABBREVMONTHNAME3:
 693             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME3, lpCalData, cchData);
 694         case CAL_SABBREVMONTHNAME4:
 695             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME4, lpCalData, cchData);
 696         case CAL_SABBREVMONTHNAME5:
 697             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME5, lpCalData, cchData);
 698         case CAL_SABBREVMONTHNAME6:
 699             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME6, lpCalData, cchData);
 700         case CAL_SABBREVMONTHNAME7:
 701             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME7, lpCalData, cchData);
 702         case CAL_SABBREVMONTHNAME8:
 703             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME8, lpCalData, cchData);
 704         case CAL_SABBREVMONTHNAME9:
 705             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME9, lpCalData, cchData);
 706         case CAL_SABBREVMONTHNAME10:
 707             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME10, lpCalData, cchData);
 708         case CAL_SABBREVMONTHNAME11:
 709             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME11, lpCalData, cchData);
 710         case CAL_SABBREVMONTHNAME12:
 711             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME12, lpCalData, cchData);
 712         case CAL_SABBREVMONTHNAME13:
 713             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME13, lpCalData, cchData);
 714         case CAL_SYEARMONTH:
 715             return GetLocaleInfoW(Locale, LOCALE_SYEARMONTH, lpCalData, cchData);
 716         case CAL_ITWODIGITYEARMAX:
 717             if (lpValue) *lpValue = CALINFO_MAX_YEAR;
 718             break;
 719         default: MESSAGE("Unknown caltype %ld\n",CalType & 0xffff);
 720                  return E_FAIL;
 721     }
 722     return 0;
 723 }
 724
 725 /*********************************************************************
 726  *      SetCalendarInfoA                                (KERNEL32.@)
 727  *
 728  */
 729 int WINAPI      SetCalendarInfoA(LCID Locale, CALID Calendar, CALTYPE CalType, LPCSTR lpCalData)
 730 {
 731     FIXME("(%08lx,%08lx,%08lx,%s): stub\n",
 732           Locale, Calendar, CalType, debugstr_a(lpCalData));
 733     return 0;
 734 }
 735
 736 /*********************************************************************
 737  *      SetCalendarInfoW                                (KERNEL32.@)
 738  *
 739  * See SetCalendarInfoA.
 740  */
 741 int WINAPI      SetCalendarInfoW(LCID Locale, CALID Calendar, CALTYPE CalType, LPCWSTR lpCalData)
 742 {
 743     FIXME("(%08lx,%08lx,%08lx,%s): stub\n",
 744           Locale, Calendar, CalType, debugstr_w(lpCalData));
 745     return 0;
 746 }
 747
 748 /*********************************************************************
 749  *      LocalFileTimeToFileTime                         (KERNEL32.@)
 750  */
 751 BOOL WINAPI LocalFileTimeToFileTime( const FILETIME *localft, LPFILETIME utcft )
 752 {
 753     NTSTATUS status;
 754     LARGE_INTEGER local, utc;
 755
 756     local.u.LowPart = localft->dwLowDateTime;
 757     local.u.HighPart = localft->dwHighDateTime;
 758     if (!(status = RtlLocalTimeToSystemTime( &local, &utc )))
 759     {
 760         utcft->dwLowDateTime = utc.u.LowPart;
 761         utcft->dwHighDateTime = utc.u.HighPart;
 762     }
 763     else SetLastError( RtlNtStatusToDosError(status) );
 764
 765     return !status;
 766 }
 767
 768 /*********************************************************************
 769  *      FileTimeToLocalFileTime                         (KERNEL32.@)
 770  */
 771 BOOL WINAPI FileTimeToLocalFileTime( const FILETIME *utcft, LPFILETIME localft )
 772 {
 773     NTSTATUS status;
 774     LARGE_INTEGER local, utc;
 775
 776     utc.u.LowPart = utcft->dwLowDateTime;
 777     utc.u.HighPart = utcft->dwHighDateTime;
 778     if (!(status = RtlSystemTimeToLocalTime( &utc, &local )))
 779     {
 780         localft->dwLowDateTime = local.u.LowPart;
 781         localft->dwHighDateTime = local.u.HighPart;
 782     }
 783     else SetLastError( RtlNtStatusToDosError(status) );
 784
 785     return !status;
 786 }
 787
 788 /*********************************************************************
 789  *      FileTimeToSystemTime                            (KERNEL32.@)
 790  */
 791 BOOL WINAPI FileTimeToSystemTime( const FILETIME *ft, LPSYSTEMTIME syst )
 792 {
 793     TIME_FIELDS tf;
 794     LARGE_INTEGER t;
 795
 796     t.u.LowPart = ft->dwLowDateTime;
 797     t.u.HighPart = ft->dwHighDateTime;
 798     RtlTimeToTimeFields(&t, &tf);
 799
 800     syst->wYear = tf.Year;
 801     syst->wMonth = tf.Month;
 802     syst->wDay = tf.Day;
 803     syst->wHour = tf.Hour;
 804     syst->wMinute = tf.Minute;
 805     syst->wSecond = tf.Second;
 806     syst->wMilliseconds = tf.Milliseconds;
 807     syst->wDayOfWeek = tf.Weekday;
 808     return TRUE;
 809 }
 810
 811 /*********************************************************************
 812  *      SystemTimeToFileTime                            (KERNEL32.@)
 813  */
 814 BOOL WINAPI SystemTimeToFileTime( const SYSTEMTIME *syst, LPFILETIME ft )
 815 {
 816     TIME_FIELDS tf;
 817     LARGE_INTEGER t;
 818
 819     tf.Year = syst->wYear;
 820     tf.Month = syst->wMonth;
 821     tf.Day = syst->wDay;
 822     tf.Hour = syst->wHour;
 823     tf.Minute = syst->wMinute;
 824     tf.Second = syst->wSecond;
 825     tf.Milliseconds = syst->wMilliseconds;
 826
 827     if( !RtlTimeFieldsToTime(&tf, &t)) {
 828         SetLastError( ERROR_INVALID_PARAMETER);
 829         return FALSE;
 830     }
 831     ft->dwLowDateTime = t.u.LowPart;
 832     ft->dwHighDateTime = t.u.HighPart;
 833     return TRUE;
 834 }
 835
 836 /*********************************************************************
 837  *      CompareFileTime                                 (KERNEL32.@)
 838  *
 839  * Compare two FILETIME's to each other.
 840  *
 841  * PARAMS
 842  *  x [I] First time
 843  *  y [I] time to compare to x
 844  *
 845  * RETURNS
 846  *  -1, 0, or 1 indicating that x is less than, equal to, or greater
 847  *  than y respectively.
 848  */
 849 INT WINAPI CompareFileTime( const FILETIME *x, const FILETIME *y )
 850 {
 851     if (!x || !y) return -1;
 852
 853     if (x->dwHighDateTime > y->dwHighDateTime)
 854         return 1;
 855     if (x->dwHighDateTime < y->dwHighDateTime)
 856         return -1;
 857     if (x->dwLowDateTime > y->dwLowDateTime)
 858         return 1;
 859     if (x->dwLowDateTime < y->dwLowDateTime)
 860         return -1;
 861     return 0;
 862 }
 863
 864 /*********************************************************************
 865  *      GetLocalTime                                    (KERNEL32.@)
 866  *
 867  * Get the current local time.
 868  *
 869  * RETURNS
 870  *  Nothing.
 871  */
 872 VOID WINAPI GetLocalTime(LPSYSTEMTIME systime) /* [O] Destination for current time */
 873 {
 874     FILETIME lft;
 875     LARGE_INTEGER ft, ft2;
 876
 877     NtQuerySystemTime(&ft);
 878     RtlSystemTimeToLocalTime(&ft, &ft2);
 879     lft.dwLowDateTime = ft2.u.LowPart;
 880     lft.dwHighDateTime = ft2.u.HighPart;
 881     FileTimeToSystemTime(&lft, systime);
 882 }
 883
 884 /*********************************************************************
 885  *      GetSystemTime                                   (KERNEL32.@)
 886  *
 887  * Get the current system time.
 888  *
 889  * RETURNS
 890  *  Nothing.
 891  */
 892 VOID WINAPI GetSystemTime(LPSYSTEMTIME systime) /* [O] Destination for current time */
 893 {
 894     FILETIME ft;
 895     LARGE_INTEGER t;
 896
 897     NtQuerySystemTime(&t);
 898     ft.dwLowDateTime = t.u.LowPart;
 899     ft.dwHighDateTime = t.u.HighPart;
 900     FileTimeToSystemTime(&ft, systime);
 901 }
 902
 903 /*********************************************************************
 904  *      GetDaylightFlag                                   (KERNEL32.@)
 905  *
 906  *      returns TRUE if daylight saving time is in operation
 907  *
 908  *      Note: this function is called from the Win98's control applet
 909  *      timedate.cpl
 910  */
 911 BOOL WINAPI GetDaylightFlag(void)
 912 {
 913     TIME_ZONE_INFORMATION tzinfo;
 914     return GetTimeZoneInformation( &tzinfo) == TIME_ZONE_ID_DAYLIGHT;
 915 }
 916
 917 /***********************************************************************
 918  *           DosDateTimeToFileTime   (KERNEL32.@)
 919  */
 920 BOOL WINAPI DosDateTimeToFileTime( WORD fatdate, WORD fattime, LPFILETIME ft)
 921 {
 922     struct tm newtm;
 923 #ifndef HAVE_TIMEGM
 924     struct tm *gtm;
 925     time_t time1, time2;
 926 #endif
 927
 928     newtm.tm_sec  = (fattime & 0x1f) * 2;
 929     newtm.tm_min  = (fattime >> 5) & 0x3f;
 930     newtm.tm_hour = (fattime >> 11);
 931     newtm.tm_mday = (fatdate & 0x1f);
 932     newtm.tm_mon  = ((fatdate >> 5) & 0x0f) - 1;
 933     newtm.tm_year = (fatdate >> 9) + 80;
 934 #ifdef HAVE_TIMEGM
 935     RtlSecondsSince1970ToTime( timegm(&newtm), (LARGE_INTEGER *)ft );
 936 #else
 937     time1 = mktime(&newtm);
 938     gtm = gmtime(&time1);
 939     time2 = mktime(gtm);
 940     RtlSecondsSince1970ToTime( 2*time1-time2, (LARGE_INTEGER *)ft );
 941 #endif
 942     return TRUE;
 943 }
 944
 945
 946 /***********************************************************************
 947  *           FileTimeToDosDateTime   (KERNEL32.@)
 948  */
 949 BOOL WINAPI FileTimeToDosDateTime( const FILETIME *ft, LPWORD fatdate,
 950                                      LPWORD fattime )
 951 {
 952     LARGE_INTEGER       li;
 953     ULONG               t;
 954     time_t              unixtime;
 955     struct tm*          tm;
 956
 957     li.u.LowPart = ft->dwLowDateTime;
 958     li.u.HighPart = ft->dwHighDateTime;
 959     RtlTimeToSecondsSince1970( &li, &t );
 960     unixtime = t;
 961     tm = gmtime( &unixtime );
 962     if (fattime)
 963         *fattime = (tm->tm_hour << 11) + (tm->tm_min << 5) + (tm->tm_sec / 2);
 964     if (fatdate)
 965         *fatdate = ((tm->tm_year - 80) << 9) + ((tm->tm_mon + 1) << 5)
 966                    + tm->tm_mday;
 967     return TRUE;
 968 }