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_MACHINE_LIMITS_H
  37 #include <machine/limits.h>
  38 #endif
  39
  40 #define NONAMELESSUNION
  41 #define NONAMELESSSTRUCT
  42 #include "windef.h"
  43 #include "winbase.h"
  44 #include "winternl.h"
  45 #include "ntstatus.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 #define LL2FILETIME( ll, pft )\
  57     (pft)->dwLowDateTime = (UINT)(ll); \
  58     (pft)->dwHighDateTime = (UINT)((ll) >> 32);
  59 #define FILETIME2LL( pft, ll) \
  60     ll = (((LONGLONG)((pft)->dwHighDateTime))<<32) + (pft)-> dwLowDateTime ;
  61
  62
  63 static const int MonthLengths[2][12] =
  64 {
  65         { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
  66         { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
  67 };
  68
  69 static inline int IsLeapYear(int Year)
  70 {
  71         return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0) ? 1 : 0;
  72 }
  73
  74 /***********************************************************************
  75  *  TIME_DayLightCompareDate
  76  *
  77  *  Compares two dates without looking at the year
  78  *
  79  * RETURNS
  80  *
  81  *  -1 if date < compareDate
  82  *   0 if date == compareDate
  83  *   1 if date > compareDate
  84  *  -2 if an error occurs
  85  */
  86 static int TIME_DayLightCompareDate(
  87     const SYSTEMTIME *date,        /* [in] The local time to compare. */
  88     const SYSTEMTIME *compareDate) /* [in] The daylight saving begin
  89                                        or end date */
  90 {
  91     int limit_day, dayinsecs;
  92
  93     if (date->wMonth < compareDate->wMonth)
  94         return -1; /* We are in a month before the date limit. */
  95
  96     if (date->wMonth > compareDate->wMonth)
  97         return 1; /* We are in a month after the date limit. */
  98
  99     if (compareDate->wDayOfWeek <= 6)
 100     {
 101         WORD First;
 102         /* compareDate->wDay is interpreted as number of the week in the month
 103          * 5 means: the last week in the month */
 104         int weekofmonth = compareDate->wDay;
 105           /* calculate the day of the first DayOfWeek in the month */
 106         First = ( 6 + compareDate->wDayOfWeek - date->wDayOfWeek + date->wDay
 107                ) % 7 + 1;
 108         limit_day = First + 7 * (weekofmonth - 1);
 109         /* check needed for the 5th weekday of the month */
 110         if(limit_day > MonthLengths[date->wMonth==2 && IsLeapYear(date->wYear)]
 111                 [date->wMonth - 1])
 112             limit_day -= 7;
 113     }
 114     else
 115     {
 116        limit_day = compareDate->wDay;
 117     }
 118
 119     /* convert to seconds */
 120     limit_day = ((limit_day * 24  + compareDate->wHour) * 60 +
 121             compareDate->wMinute ) * 60;
 122     dayinsecs = ((date->wDay * 24  + date->wHour) * 60 +
 123             date->wMinute ) * 60 + date->wSecond;
 124     /* and compare */
 125     return dayinsecs < limit_day ? -1 :
 126            dayinsecs > limit_day ? 1 :
 127            0;   /* date is equal to the date limit. */
 128 }
 129
 130 /***********************************************************************
 131  *  TIME_CompTimeZoneID
 132  *
 133  *  Computes the local time bias for a given time and time zone
 134  *
 135  *  Returns:
 136  *      TIME_ZONE_ID_INVALID    An error occurred
 137  *      TIME_ZONE_ID_UNKNOWN    There are no transition time known
 138  *      TIME_ZONE_ID_STANDARD   Current time is standard time
 139  *      TIME_ZONE_ID_DAYLIGHT   Current time is dayligh saving time
 140  */
 141 static BOOL TIME_CompTimeZoneID (
 142     const TIME_ZONE_INFORMATION *pTZinfo, /* [in] The time zone data. */
 143     FILETIME      *lpFileTime,            /* [in] The system or local time. */
 144     BOOL           islocal                /* [in] it is local time */
 145     )
 146 {
 147     int ret;
 148     BOOL beforeStandardDate, afterDaylightDate;
 149     DWORD retval = TIME_ZONE_ID_INVALID;
 150     LONGLONG llTime = 0; /* initialized to prevent gcc complaining */
 151     SYSTEMTIME SysTime;
 152     FILETIME ftTemp;
 153
 154     if (pTZinfo->DaylightDate.wMonth != 0)
 155     {
 156         if (pTZinfo->StandardDate.wMonth == 0 ||
 157             pTZinfo->StandardDate.wDay<1 ||
 158             pTZinfo->StandardDate.wDay>5 ||
 159             pTZinfo->DaylightDate.wDay<1 ||
 160             pTZinfo->DaylightDate.wDay>5)
 161         {
 162             SetLastError(ERROR_INVALID_PARAMETER);
 163             return TIME_ZONE_ID_INVALID;
 164         }
 165
 166         if (!islocal) {
 167             FILETIME2LL( lpFileTime, llTime );
 168             llTime -= ( pTZinfo->Bias + pTZinfo->DaylightBias )
 169                 * (LONGLONG)600000000;
 170             LL2FILETIME( llTime, &ftTemp)
 171             lpFileTime = &ftTemp;
 172         }
 173
 174         FileTimeToSystemTime(lpFileTime, &SysTime);
 175
 176          /* check for daylight saving */
 177         ret = TIME_DayLightCompareDate( &SysTime, &pTZinfo->StandardDate);
 178         if (ret == -2)
 179           return TIME_ZONE_ID_INVALID;
 180
 181         beforeStandardDate = ret < 0;
 182
 183         if (!islocal) {
 184             llTime -= ( pTZinfo->StandardBias - pTZinfo->DaylightBias )
 185                 * (LONGLONG)600000000;
 186             LL2FILETIME( llTime, &ftTemp)
 187             FileTimeToSystemTime(lpFileTime, &SysTime);
 188         }
 189
 190         ret = TIME_DayLightCompareDate( &SysTime, &pTZinfo->DaylightDate);
 191         if (ret == -2)
 192           return TIME_ZONE_ID_INVALID;
 193
 194         afterDaylightDate = ret >= 0;
 195
 196         retval = TIME_ZONE_ID_STANDARD;
 197         if( pTZinfo->DaylightDate.wMonth <  pTZinfo->StandardDate.wMonth ) {
 198             /* Northern hemisphere */
 199             if( beforeStandardDate && afterDaylightDate )
 200                 retval = TIME_ZONE_ID_DAYLIGHT;
 201         } else    /* Down south */
 202             if( beforeStandardDate || afterDaylightDate )
 203             retval = TIME_ZONE_ID_DAYLIGHT;
 204     } else
 205         /* No transition date */
 206         retval = TIME_ZONE_ID_UNKNOWN;
 207
 208     return retval;
 209 }
 210
 211 /***********************************************************************
 212  *  TIME_TimeZoneID
 213  *
 214  *  Calculates whether daylight saving is on now.
 215  *
 216  *  Returns:
 217  *      TIME_ZONE_ID_INVALID    An error occurred
 218  *      TIME_ZONE_ID_UNKNOWN    There are no transition time known
 219  *      TIME_ZONE_ID_STANDARD   Current time is standard time
 220  *      TIME_ZONE_ID_DAYLIGHT   Current time is dayligh saving time
 221  */
 222 static DWORD TIME_ZoneID(
 223         const TIME_ZONE_INFORMATION  *pTzi   /* Timezone info */
 224         )
 225 {
 226     FILETIME ftTime;
 227     GetSystemTimeAsFileTime( &ftTime);
 228     return TIME_CompTimeZoneID( pTzi, &ftTime, FALSE);
 229 }
 230
 231 /***********************************************************************
 232  *  TIME_GetTimezoneBias
 233  *
 234  *  Calculates the local time bias for a given time zone
 235  *
 236  * RETURNS
 237  *
 238  *  Returns TRUE when the time zone bias was calculated.
 239  */
 240 static BOOL TIME_GetTimezoneBias(
 241     const TIME_ZONE_INFORMATION
 242                   *pTZinfo, /* [in] The time zone data. */
 243     FILETIME      *lpFileTime,         /* [in] The system or local time. */
 244     BOOL           islocal,            /* [in] it is local time */
 245     LONG          *pBias               /* [out] The calculated bias in minutes */
 246     )
 247 {
 248     LONG bias = pTZinfo->Bias;
 249     DWORD tzid = TIME_CompTimeZoneID( pTZinfo, lpFileTime, islocal);
 250
 251     if( tzid == TIME_ZONE_ID_INVALID)
 252         return FALSE;
 253     if (tzid == TIME_ZONE_ID_DAYLIGHT)
 254         bias += pTZinfo->DaylightBias;
 255     else if (tzid == TIME_ZONE_ID_STANDARD)
 256         bias += pTZinfo->StandardBias;
 257     *pBias = bias;
 258     return TRUE;
 259 }
 260
 261
 262 /***********************************************************************
 263  *              SetLocalTime            (KERNEL32.@)
 264  *
 265  *  Set the local time using current time zone and daylight
 266  *  savings settings.
 267  *
 268  * RETURNS
 269  *  Success: TRUE. The time was set
 270  *  Failure: FALSE, if the time was invalid or caller does not have
 271  *           permission to change the time.
 272  */
 273 BOOL WINAPI SetLocalTime(
 274     const SYSTEMTIME *systime) /* [in] The desired local time. */
 275 {
 276     FILETIME ft;
 277     LARGE_INTEGER st, st2;
 278     NTSTATUS status;
 279
 280     if( !SystemTimeToFileTime( systime, &ft ))
 281         return FALSE;
 282     st.u.LowPart = ft.dwLowDateTime;
 283     st.u.HighPart = ft.dwHighDateTime;
 284     RtlLocalTimeToSystemTime( &st, &st2 );
 285
 286     if ((status = NtSetSystemTime(&st2, NULL)))
 287         SetLastError( RtlNtStatusToDosError(status) );
 288     return !status;
 289 }
 290
 291
 292 /***********************************************************************
 293  *           GetSystemTimeAdjustment     (KERNEL32.@)
 294  *
 295  *  Get the period between clock interrupts and the amount the clock
 296  *  is adjusted each interrupt so as to keep it in sync with an external source.
 297  *
 298  * RETURNS
 299  *  TRUE.
 300  *
 301  * BUGS
 302  *  Only the special case of disabled time adjustments is supported.
 303  */
 304 BOOL WINAPI GetSystemTimeAdjustment(
 305     PDWORD lpTimeAdjustment,         /* [out] The clock adjustment per interrupt in 100's of nanoseconds. */
 306     PDWORD lpTimeIncrement,          /* [out] The time between clock interrupts in 100's of nanoseconds. */
 307     PBOOL  lpTimeAdjustmentDisabled) /* [out] The clock synchronisation has been disabled. */
 308 {
 309     *lpTimeAdjustment = 0;
 310     *lpTimeIncrement = 0;
 311     *lpTimeAdjustmentDisabled = TRUE;
 312     return TRUE;
 313 }
 314
 315
 316 /***********************************************************************
 317  *              SetSystemTime            (KERNEL32.@)
 318  *
 319  *  Set the system time in utc.
 320  *
 321  * RETURNS
 322  *  Success: TRUE. The time was set
 323  *  Failure: FALSE, if the time was invalid or caller does not have
 324  *           permission to change the time.
 325  */
 326 BOOL WINAPI SetSystemTime(
 327     const SYSTEMTIME *systime) /* [in] The desired system time. */
 328 {
 329     FILETIME ft;
 330     LARGE_INTEGER t;
 331     NTSTATUS status;
 332
 333     if( !SystemTimeToFileTime( systime, &ft ))
 334         return FALSE;
 335     t.u.LowPart = ft.dwLowDateTime;
 336     t.u.HighPart = ft.dwHighDateTime;
 337     if ((status = NtSetSystemTime(&t, NULL)))
 338         SetLastError( RtlNtStatusToDosError(status) );
 339     return !status;
 340 }
 341
 342 /***********************************************************************
 343  *              SetSystemTimeAdjustment  (KERNEL32.@)
 344  *
 345  *  Enables or disables the timing adjustments to the system's clock.
 346  *
 347  * RETURNS
 348  *  Success: TRUE.
 349  *  Failure: FALSE.
 350  */
 351 BOOL WINAPI SetSystemTimeAdjustment(
 352     DWORD dwTimeAdjustment,
 353     BOOL bTimeAdjustmentDisabled)
 354 {
 355     /* Fake function for now... */
 356     FIXME("(%08lx,%d): stub !\n", dwTimeAdjustment, bTimeAdjustmentDisabled);
 357     return TRUE;
 358 }
 359
 360 /***********************************************************************
 361  *              GetTimeZoneInformation  (KERNEL32.@)
 362  *
 363  *  Get information about the current local time zone.
 364  *
 365  * RETURNS
 366  *      TIME_ZONE_ID_INVALID    An error occurred
 367  *      TIME_ZONE_ID_UNKNOWN    There are no transition time known
 368  *      TIME_ZONE_ID_STANDARD   Current time is standard time
 369  *      TIME_ZONE_ID_DAYLIGHT   Current time is dayligh saving time
 370  */
 371 DWORD WINAPI GetTimeZoneInformation(
 372     LPTIME_ZONE_INFORMATION tzinfo) /* [out] Destination for time zone information */
 373 {
 374     NTSTATUS status;
 375
 376     status = RtlQueryTimeZoneInformation( (RTL_TIME_ZONE_INFORMATION*)tzinfo );
 377     if ( status != STATUS_SUCCESS )
 378     {
 379         SetLastError( RtlNtStatusToDosError(status) );
 380         return TIME_ZONE_ID_INVALID;
 381     }
 382     return TIME_ZoneID( tzinfo );
 383 }
 384
 385 /***********************************************************************
 386  *              SetTimeZoneInformation  (KERNEL32.@)
 387  *
 388  *  Change the settings of the current local time zone.
 389  *
 390  * RETURNS
 391  *  Success: TRUE. The time zone was updated with the settings from tzinfo
 392  *  Failure: FALSE.
 393  */
 394 BOOL WINAPI SetTimeZoneInformation(
 395     const TIME_ZONE_INFORMATION *tzinfo) /* [in] The new time zone. */
 396 {
 397     NTSTATUS status;
 398     status = RtlSetTimeZoneInformation( (RTL_TIME_ZONE_INFORMATION*) tzinfo );
 399     if ( status != STATUS_SUCCESS )
 400         SetLastError( RtlNtStatusToDosError(status) );
 401     return !status;
 402 }
 403
 404 /***********************************************************************
 405  *              SystemTimeToTzSpecificLocalTime  (KERNEL32.@)
 406  *
 407  *  Convert a utc system time to a local time in a given time zone.
 408  *
 409  * RETURNS
 410  *  Success: TRUE. lpLocalTime contains the converted time
 411  *  Failure: FALSE.
 412  */
 413
 414 BOOL WINAPI SystemTimeToTzSpecificLocalTime(
 415     LPTIME_ZONE_INFORMATION
 416            lpTimeZoneInformation, /* [in] The desired time zone. */
 417     LPSYSTEMTIME lpUniversalTime, /* [in] The utc time to base local time on. */
 418     LPSYSTEMTIME lpLocalTime)     /* [out] The local time in the time zone. */
 419 {
 420     FILETIME ft;
 421     LONG lBias;
 422     LONGLONG llTime;
 423     TIME_ZONE_INFORMATION tzinfo;
 424
 425     if (lpTimeZoneInformation != NULL)
 426     {
 427         memcpy(&tzinfo, lpTimeZoneInformation, sizeof(TIME_ZONE_INFORMATION));
 428     }
 429     else
 430     {
 431         if (GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_INVALID)
 432             return FALSE;
 433     }
 434
 435     if (!SystemTimeToFileTime(lpUniversalTime, &ft))
 436         return FALSE;
 437     FILETIME2LL( &ft, llTime)
 438     if (!TIME_GetTimezoneBias(&tzinfo, &ft, FALSE, &lBias))
 439         return FALSE;
 440     /* convert minutes to 100-nanoseconds-ticks */
 441     llTime -= (LONGLONG)lBias * 600000000;
 442     LL2FILETIME( llTime, &ft)
 443
 444     return FileTimeToSystemTime(&ft, lpLocalTime);
 445 }
 446
 447
 448 /***********************************************************************
 449  *              TzSpecificLocalTimeToSystemTime  (KERNEL32.@)
 450  *
 451  *  Converts a local time to a time in utc.
 452  *
 453  * RETURNS
 454  *  Success: TRUE. lpUniversalTime contains the converted time
 455  *  Failure: FALSE.
 456  */
 457 BOOL WINAPI TzSpecificLocalTimeToSystemTime(
 458     LPTIME_ZONE_INFORMATION lpTimeZoneInformation, /* [in] The desired time zone. */
 459     LPSYSTEMTIME            lpLocalTime,           /* [in] The local time. */
 460     LPSYSTEMTIME            lpUniversalTime)       /* [out] The calculated utc time. */
 461 {
 462     FILETIME ft;
 463     LONG lBias;
 464     LONGLONG t;
 465     TIME_ZONE_INFORMATION tzinfo;
 466
 467     if (lpTimeZoneInformation != NULL)
 468     {
 469         memcpy(&tzinfo, lpTimeZoneInformation, sizeof(TIME_ZONE_INFORMATION));
 470     }
 471     else
 472     {
 473         if (GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_INVALID)
 474             return FALSE;
 475     }
 476
 477     if (!SystemTimeToFileTime(lpLocalTime, &ft))
 478         return FALSE;
 479     FILETIME2LL( &ft, t)
 480     if (!TIME_GetTimezoneBias(&tzinfo, &ft, TRUE, &lBias))
 481         return FALSE;
 482     /* convert minutes to 100-nanoseconds-ticks */
 483     t += (LONGLONG)lBias * 600000000;
 484     LL2FILETIME( t, &ft)
 485     return FileTimeToSystemTime(&ft, lpUniversalTime);
 486 }
 487
 488
 489 /***********************************************************************
 490  *              GetSystemTimeAsFileTime  (KERNEL32.@)
 491  *
 492  *  Get the current time in utc format.
 493  *
 494  *  RETURNS
 495  *   Nothing.
 496  */
 497 VOID WINAPI GetSystemTimeAsFileTime(
 498     LPFILETIME time) /* [out] Destination for the current utc time */
 499 {
 500     LARGE_INTEGER t;
 501     NtQuerySystemTime( &t );
 502     time->dwLowDateTime = t.u.LowPart;
 503     time->dwHighDateTime = t.u.HighPart;
 504 }
 505
 506
 507 /*********************************************************************
 508  *      TIME_ClockTimeToFileTime    (olorin@fandra.org, 20-Sep-1998)
 509  *
 510  *  Used by GetProcessTimes to convert clock_t into FILETIME.
 511  *
 512  *      Differences to UnixTimeToFileTime:
 513  *          1) Divided by CLK_TCK
 514  *          2) Time is relative. There is no 'starting date', so there is
 515  *             no need for offset correction, like in UnixTimeToFileTime
 516  */
 517 static void TIME_ClockTimeToFileTime(clock_t unix_time, LPFILETIME filetime)
 518 {
 519     ULONGLONG secs = RtlEnlargedUnsignedMultiply( unix_time, 10000000 );
 520     secs = RtlExtendedLargeIntegerDivide( secs, CLK_TCK, NULL );
 521     filetime->dwLowDateTime  = (DWORD)secs;
 522     filetime->dwHighDateTime = (DWORD)(secs >> 32);
 523 }
 524
 525 /*********************************************************************
 526  *      GetProcessTimes                         (KERNEL32.@)
 527  *
 528  *  Get the user and kernel execution times of a process,
 529  *  along with the creation and exit times if known.
 530  *
 531  * RETURNS
 532  *  TRUE.
 533  *
 534  * NOTES
 535  *  olorin@fandra.org:
 536  *  Would be nice to subtract the cpu time used by Wine at startup.
 537  *  Also, there is a need to separate times used by different applications.
 538  *
 539  * BUGS
 540  *  lpCreationTime and lpExitTime are not initialised in the Wine implementation.
 541  */
 542 BOOL WINAPI GetProcessTimes(
 543     HANDLE     hprocess,       /* [in] The process to be queried (obtained from PROCESS_QUERY_INFORMATION). */
 544     LPFILETIME lpCreationTime, /* [out] The creation time of the process. */
 545     LPFILETIME lpExitTime,     /* [out] The exit time of the process if exited. */
 546     LPFILETIME lpKernelTime,   /* [out] The time spent in kernel routines in 100's of nanoseconds. */
 547     LPFILETIME lpUserTime)     /* [out] The time spent in user routines in 100's of nanoseconds. */
 548 {
 549     struct tms tms;
 550
 551     times(&tms);
 552     TIME_ClockTimeToFileTime(tms.tms_utime,lpUserTime);
 553     TIME_ClockTimeToFileTime(tms.tms_stime,lpKernelTime);
 554     return TRUE;
 555 }
 556
 557 /*********************************************************************
 558  *      GetCalendarInfoA                                (KERNEL32.@)
 559  *
 560  */
 561 int WINAPI GetCalendarInfoA(LCID lcid, CALID Calendar, CALTYPE CalType,
 562                             LPSTR lpCalData, int cchData, LPDWORD lpValue)
 563 {
 564     int ret;
 565     LPWSTR lpCalDataW = NULL;
 566
 567     FIXME("(%08lx,%08lx,%08lx,%p,%d,%p): quarter-stub\n",
 568           lcid, Calendar, CalType, lpCalData, cchData, lpValue);
 569
 570     lcid = ConvertDefaultLocale(lcid);
 571
 572     if (NLS_IsUnicodeOnlyLcid(lcid))
 573     {
 574       SetLastError(ERROR_INVALID_PARAMETER);
 575       return 0;
 576     }
 577
 578     if (cchData &&
 579         !(lpCalDataW = HeapAlloc(GetProcessHeap(), 0, cchData*sizeof(WCHAR))))
 580       return 0;
 581
 582     ret = GetCalendarInfoW(lcid, Calendar, CalType, lpCalDataW, cchData, lpValue);
 583     if(ret && lpCalDataW && lpCalData)
 584       WideCharToMultiByte(CP_ACP, 0, lpCalDataW, cchData, lpCalData, cchData, NULL, NULL);
 585     HeapFree(GetProcessHeap(), 0, lpCalDataW);
 586
 587     return ret;
 588 }
 589
 590 /*********************************************************************
 591  *      GetCalendarInfoW                                (KERNEL32.@)
 592  *
 593  * See GetCalendarInfoA.
 594  */
 595 int WINAPI GetCalendarInfoW(LCID Locale, CALID Calendar, CALTYPE CalType,
 596                             LPWSTR lpCalData, int cchData, LPDWORD lpValue)
 597 {
 598     FIXME("(%08lx,%08lx,%08lx,%p,%d,%p): quarter-stub\n",
 599           Locale, Calendar, CalType, lpCalData, cchData, lpValue);
 600
 601     if (CalType & CAL_NOUSEROVERRIDE)
 602         FIXME("flag CAL_NOUSEROVERRIDE used, not fully implemented\n");
 603     if (CalType & CAL_USE_CP_ACP)
 604         FIXME("flag CAL_USE_CP_ACP used, not fully implemented\n");
 605
 606     if (CalType & CAL_RETURN_NUMBER) {
 607         if (lpCalData != NULL)
 608             WARN("lpCalData not NULL (%p) when it should!\n", lpCalData);
 609         if (cchData != 0)
 610             WARN("cchData not 0 (%d) when it should!\n", cchData);
 611     } else {
 612         if (lpValue != NULL)
 613             WARN("lpValue not NULL (%p) when it should!\n", lpValue);
 614     }
 615
 616     /* FIXME: No verification is made yet wrt Locale
 617      * for the CALTYPES not requiring GetLocaleInfoA */
 618     switch (CalType & ~(CAL_NOUSEROVERRIDE|CAL_RETURN_NUMBER|CAL_USE_CP_ACP)) {
 619         case CAL_ICALINTVALUE:
 620             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 621             return E_FAIL;
 622         case CAL_SCALNAME:
 623             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 624             return E_FAIL;
 625         case CAL_IYEAROFFSETRANGE:
 626             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 627             return E_FAIL;
 628         case CAL_SERASTRING:
 629             FIXME("Unimplemented caltype %ld\n", CalType & 0xffff);
 630             return E_FAIL;
 631         case CAL_SSHORTDATE:
 632             return GetLocaleInfoW(Locale, LOCALE_SSHORTDATE, lpCalData, cchData);
 633         case CAL_SLONGDATE:
 634             return GetLocaleInfoW(Locale, LOCALE_SLONGDATE, lpCalData, cchData);
 635         case CAL_SDAYNAME1:
 636             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME1, lpCalData, cchData);
 637         case CAL_SDAYNAME2:
 638             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME2, lpCalData, cchData);
 639         case CAL_SDAYNAME3:
 640             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME3, lpCalData, cchData);
 641         case CAL_SDAYNAME4:
 642             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME4, lpCalData, cchData);
 643         case CAL_SDAYNAME5:
 644             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME5, lpCalData, cchData);
 645         case CAL_SDAYNAME6:
 646             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME6, lpCalData, cchData);
 647         case CAL_SDAYNAME7:
 648             return GetLocaleInfoW(Locale, LOCALE_SDAYNAME7, lpCalData, cchData);
 649         case CAL_SABBREVDAYNAME1:
 650             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME1, lpCalData, cchData);
 651         case CAL_SABBREVDAYNAME2:
 652             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME2, lpCalData, cchData);
 653         case CAL_SABBREVDAYNAME3:
 654             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME3, lpCalData, cchData);
 655         case CAL_SABBREVDAYNAME4:
 656             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME4, lpCalData, cchData);
 657         case CAL_SABBREVDAYNAME5:
 658             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME5, lpCalData, cchData);
 659         case CAL_SABBREVDAYNAME6:
 660             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME6, lpCalData, cchData);
 661         case CAL_SABBREVDAYNAME7:
 662             return GetLocaleInfoW(Locale, LOCALE_SABBREVDAYNAME7, lpCalData, cchData);
 663         case CAL_SMONTHNAME1:
 664             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME1, lpCalData, cchData);
 665         case CAL_SMONTHNAME2:
 666             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME2, lpCalData, cchData);
 667         case CAL_SMONTHNAME3:
 668             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME3, lpCalData, cchData);
 669         case CAL_SMONTHNAME4:
 670             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME4, lpCalData, cchData);
 671         case CAL_SMONTHNAME5:
 672             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME5, lpCalData, cchData);
 673         case CAL_SMONTHNAME6:
 674             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME6, lpCalData, cchData);
 675         case CAL_SMONTHNAME7:
 676             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME7, lpCalData, cchData);
 677         case CAL_SMONTHNAME8:
 678             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME8, lpCalData, cchData);
 679         case CAL_SMONTHNAME9:
 680             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME9, lpCalData, cchData);
 681         case CAL_SMONTHNAME10:
 682             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME10, lpCalData, cchData);
 683         case CAL_SMONTHNAME11:
 684             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME11, lpCalData, cchData);
 685         case CAL_SMONTHNAME12:
 686             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME12, lpCalData, cchData);
 687         case CAL_SMONTHNAME13:
 688             return GetLocaleInfoW(Locale, LOCALE_SMONTHNAME13, lpCalData, cchData);
 689         case CAL_SABBREVMONTHNAME1:
 690             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME1, lpCalData, cchData);
 691         case CAL_SABBREVMONTHNAME2:
 692             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME2, lpCalData, cchData);
 693         case CAL_SABBREVMONTHNAME3:
 694             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME3, lpCalData, cchData);
 695         case CAL_SABBREVMONTHNAME4:
 696             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME4, lpCalData, cchData);
 697         case CAL_SABBREVMONTHNAME5:
 698             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME5, lpCalData, cchData);
 699         case CAL_SABBREVMONTHNAME6:
 700             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME6, lpCalData, cchData);
 701         case CAL_SABBREVMONTHNAME7:
 702             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME7, lpCalData, cchData);
 703         case CAL_SABBREVMONTHNAME8:
 704             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME8, lpCalData, cchData);
 705         case CAL_SABBREVMONTHNAME9:
 706             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME9, lpCalData, cchData);
 707         case CAL_SABBREVMONTHNAME10:
 708             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME10, lpCalData, cchData);
 709         case CAL_SABBREVMONTHNAME11:
 710             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME11, lpCalData, cchData);
 711         case CAL_SABBREVMONTHNAME12:
 712             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME12, lpCalData, cchData);
 713         case CAL_SABBREVMONTHNAME13:
 714             return GetLocaleInfoW(Locale, LOCALE_SABBREVMONTHNAME13, lpCalData, cchData);
 715         case CAL_SYEARMONTH:
 716             return GetLocaleInfoW(Locale, LOCALE_SYEARMONTH, lpCalData, cchData);
 717         case CAL_ITWODIGITYEARMAX:
 718             if (lpValue) *lpValue = CALINFO_MAX_YEAR;
 719             break;
 720         default: MESSAGE("Unknown caltype %ld\n",CalType & 0xffff);
 721                  return E_FAIL;
 722     }
 723     return 0;
 724 }
 725
 726 /*********************************************************************
 727  *      SetCalendarInfoA                                (KERNEL32.@)
 728  *
 729  */
 730 int WINAPI      SetCalendarInfoA(LCID Locale, CALID Calendar, CALTYPE CalType, LPCSTR lpCalData)
 731 {
 732     FIXME("(%08lx,%08lx,%08lx,%s): stub\n",
 733           Locale, Calendar, CalType, debugstr_a(lpCalData));
 734     return 0;
 735 }
 736
 737 /*********************************************************************
 738  *      SetCalendarInfoW                                (KERNEL32.@)
 739  *
 740  * See SetCalendarInfoA.
 741  */
 742 int WINAPI      SetCalendarInfoW(LCID Locale, CALID Calendar, CALTYPE CalType, LPCWSTR lpCalData)
 743 {
 744     FIXME("(%08lx,%08lx,%08lx,%s): stub\n",
 745           Locale, Calendar, CalType, debugstr_w(lpCalData));
 746     return 0;
 747 }
 748
 749 /*********************************************************************
 750  *      LocalFileTimeToFileTime                         (KERNEL32.@)
 751  */
 752 BOOL WINAPI LocalFileTimeToFileTime( const FILETIME *localft, LPFILETIME utcft )
 753 {
 754     NTSTATUS status;
 755     LARGE_INTEGER local, utc;
 756
 757     local.u.LowPart = localft->dwLowDateTime;
 758     local.u.HighPart = localft->dwHighDateTime;
 759     if (!(status = RtlLocalTimeToSystemTime( &local, &utc )))
 760     {
 761         utcft->dwLowDateTime = utc.u.LowPart;
 762         utcft->dwHighDateTime = utc.u.HighPart;
 763     }
 764     else SetLastError( RtlNtStatusToDosError(status) );
 765
 766     return !status;
 767 }
 768
 769 /*********************************************************************
 770  *      FileTimeToLocalFileTime                         (KERNEL32.@)
 771  */
 772 BOOL WINAPI FileTimeToLocalFileTime( const FILETIME *utcft, LPFILETIME localft )
 773 {
 774     NTSTATUS status;
 775     LARGE_INTEGER local, utc;
 776
 777     utc.u.LowPart = utcft->dwLowDateTime;
 778     utc.u.HighPart = utcft->dwHighDateTime;
 779     if (!(status = RtlSystemTimeToLocalTime( &utc, &local )))
 780     {
 781         localft->dwLowDateTime = local.u.LowPart;
 782         localft->dwHighDateTime = local.u.HighPart;
 783     }
 784     else SetLastError( RtlNtStatusToDosError(status) );
 785
 786     return !status;
 787 }
 788
 789 /*********************************************************************
 790  *      FileTimeToSystemTime                            (KERNEL32.@)
 791  */
 792 BOOL WINAPI FileTimeToSystemTime( const FILETIME *ft, LPSYSTEMTIME syst )
 793 {
 794     TIME_FIELDS tf;
 795     LARGE_INTEGER t;
 796
 797     t.u.LowPart = ft->dwLowDateTime;
 798     t.u.HighPart = ft->dwHighDateTime;
 799     RtlTimeToTimeFields(&t, &tf);
 800
 801     syst->wYear = tf.Year;
 802     syst->wMonth = tf.Month;
 803     syst->wDay = tf.Day;
 804     syst->wHour = tf.Hour;
 805     syst->wMinute = tf.Minute;
 806     syst->wSecond = tf.Second;
 807     syst->wMilliseconds = tf.Milliseconds;
 808     syst->wDayOfWeek = tf.Weekday;
 809     return TRUE;
 810 }
 811
 812 /*********************************************************************
 813  *      SystemTimeToFileTime                            (KERNEL32.@)
 814  */
 815 BOOL WINAPI SystemTimeToFileTime( const SYSTEMTIME *syst, LPFILETIME ft )
 816 {
 817     TIME_FIELDS tf;
 818     LARGE_INTEGER t;
 819
 820     tf.Year = syst->wYear;
 821     tf.Month = syst->wMonth;
 822     tf.Day = syst->wDay;
 823     tf.Hour = syst->wHour;
 824     tf.Minute = syst->wMinute;
 825     tf.Second = syst->wSecond;
 826     tf.Milliseconds = syst->wMilliseconds;
 827
 828     if( !RtlTimeFieldsToTime(&tf, &t)) {
 829         SetLastError( ERROR_INVALID_PARAMETER);
 830         return FALSE;
 831     }
 832     ft->dwLowDateTime = t.u.LowPart;
 833     ft->dwHighDateTime = t.u.HighPart;
 834     return TRUE;
 835 }
 836
 837 /*********************************************************************
 838  *      CompareFileTime                                 (KERNEL32.@)
 839  *
 840  * Compare two FILETIME's to each other.
 841  *
 842  * PARAMS
 843  *  x [I] First time
 844  *  y [I] time to compare to x
 845  *
 846  * RETURNS
 847  *  -1, 0, or 1 indicating that x is less than, equal to, or greater
 848  *  than y respectively.
 849  */
 850 INT WINAPI CompareFileTime( const FILETIME *x, const FILETIME *y )
 851 {
 852     if (!x || !y) return -1;
 853
 854     if (x->dwHighDateTime > y->dwHighDateTime)
 855         return 1;
 856     if (x->dwHighDateTime < y->dwHighDateTime)
 857         return -1;
 858     if (x->dwLowDateTime > y->dwLowDateTime)
 859         return 1;
 860     if (x->dwLowDateTime < y->dwLowDateTime)
 861         return -1;
 862     return 0;
 863 }
 864
 865 /*********************************************************************
 866  *      GetLocalTime                                    (KERNEL32.@)
 867  *
 868  * Get the current local time.
 869  *
 870  * RETURNS
 871  *  Nothing.
 872  */
 873 VOID WINAPI GetLocalTime(LPSYSTEMTIME systime) /* [O] Destination for current time */
 874 {
 875     FILETIME lft;
 876     LARGE_INTEGER ft, ft2;
 877
 878     NtQuerySystemTime(&ft);
 879     RtlSystemTimeToLocalTime(&ft, &ft2);
 880     lft.dwLowDateTime = ft2.u.LowPart;
 881     lft.dwHighDateTime = ft2.u.HighPart;
 882     FileTimeToSystemTime(&lft, systime);
 883 }
 884
 885 /*********************************************************************
 886  *      GetSystemTime                                   (KERNEL32.@)
 887  *
 888  * Get the current system time.
 889  *
 890  * RETURNS
 891  *  Nothing.
 892  */
 893 VOID WINAPI GetSystemTime(LPSYSTEMTIME systime) /* [O] Destination for current time */
 894 {
 895     FILETIME ft;
 896     LARGE_INTEGER t;
 897
 898     NtQuerySystemTime(&t);
 899     ft.dwLowDateTime = t.u.LowPart;
 900     ft.dwHighDateTime = t.u.HighPart;
 901     FileTimeToSystemTime(&ft, systime);
 902 }
 903
 904 /*********************************************************************
 905  *      GetDaylightFlag                                   (KERNEL32.@)
 906  *
 907  *      returns TRUE if daylight saving time is in operation
 908  *
 909  *      Note: this function is called from the Win98's control applet
 910  *      timedate.cpl
 911  */
 912 BOOL WINAPI GetDaylightFlag(void)
 913 {
 914     TIME_ZONE_INFORMATION tzinfo;
 915     return GetTimeZoneInformation( &tzinfo) == TIME_ZONE_ID_DAYLIGHT;
 916 }
 917
 918 /***********************************************************************
 919  *           DosDateTimeToFileTime   (KERNEL32.@)
 920  */
 921 BOOL WINAPI DosDateTimeToFileTime( WORD fatdate, WORD fattime, LPFILETIME ft)
 922 {
 923     struct tm newtm;
 924 #ifndef HAVE_TIMEGM
 925     struct tm *gtm;
 926     time_t time1, time2;
 927 #endif
 928
 929     newtm.tm_sec  = (fattime & 0x1f) * 2;
 930     newtm.tm_min  = (fattime >> 5) & 0x3f;
 931     newtm.tm_hour = (fattime >> 11);
 932     newtm.tm_mday = (fatdate & 0x1f);
 933     newtm.tm_mon  = ((fatdate >> 5) & 0x0f) - 1;
 934     newtm.tm_year = (fatdate >> 9) + 80;
 935 #ifdef HAVE_TIMEGM
 936     RtlSecondsSince1970ToTime( timegm(&newtm), (LARGE_INTEGER *)ft );
 937 #else
 938     time1 = mktime(&newtm);
 939     gtm = gmtime(&time1);
 940     time2 = mktime(gtm);
 941     RtlSecondsSince1970ToTime( 2*time1-time2, (LARGE_INTEGER *)ft );
 942 #endif
 943     return TRUE;
 944 }
 945
 946
 947 /***********************************************************************
 948  *           FileTimeToDosDateTime   (KERNEL32.@)
 949  */
 950 BOOL WINAPI FileTimeToDosDateTime( const FILETIME *ft, LPWORD fatdate,
 951                                      LPWORD fattime )
 952 {
 953     LARGE_INTEGER       li;
 954     ULONG               t;
 955     time_t              unixtime;
 956     struct tm*          tm;
 957
 958     li.u.LowPart = ft->dwLowDateTime;
 959     li.u.HighPart = ft->dwHighDateTime;
 960     RtlTimeToSecondsSince1970( &li, &t );
 961     unixtime = t;
 962     tm = gmtime( &unixtime );
 963     if (fattime)
 964         *fattime = (tm->tm_hour << 11) + (tm->tm_min << 5) + (tm->tm_sec / 2);
 965     if (fatdate)
 966         *fatdate = ((tm->tm_year - 80) << 9) + ((tm->tm_mon + 1) << 5)
 967                    + tm->tm_mday;
 968     return TRUE;
 969 }