dlls/msvcrt/time.c

   1 /*
   2  * msvcrt.dll date/time functions
   3  *
   4  * Copyright 1996,1998 Marcus Meissner
   5  * Copyright 1996 Jukka Iivonen
   6  * Copyright 1997,2000 Uwe Bonnes
   7  * Copyright 2000 Jon Griffiths
   8  * Copyright 2004 Hans Leidekker
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26
  27 #include <stdlib.h>
  28
  29 #include "msvcrt.h"
  30 #include "mtdll.h"
  31 #include "winbase.h"
  32 #include "winnls.h"
  33 #include "winternl.h"
  34 #include "wine/debug.h"
  35 #include "wine/unicode.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  38
  39 BOOL WINAPI GetDaylightFlag(void);
  40
  41 static const int MonthLengths[2][12] =
  42 {
  43     { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
  44     { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
  45 };
  46
  47 static inline BOOL IsLeapYear(int Year)
  48 {
  49     return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0);
  50 }
  51
  52 static inline void write_invalid_msvcrt_tm( struct MSVCRT_tm *tm )
  53 {
  54     tm->tm_sec = -1;
  55     tm->tm_min = -1;
  56     tm->tm_hour = -1;
  57     tm->tm_mday = -1;
  58     tm->tm_mon = -1;
  59     tm->tm_year = -1;
  60     tm->tm_wday = -1;
  61     tm->tm_yday = -1;
  62     tm->tm_isdst = -1;
  63 }
  64
  65 /*********************************************************************
  66  *              _daylight (MSVCRT.@)
  67  */
  68 int MSVCRT___daylight = 1;
  69
  70 /*********************************************************************
  71  *              _timezone (MSVCRT.@)
  72  */
  73 MSVCRT_long MSVCRT___timezone = 28800;
  74
  75 /*********************************************************************
  76  *              _dstbias (MSVCRT.@)
  77  */
  78 int MSVCRT__dstbias = -3600;
  79
  80 /*********************************************************************
  81  *              _tzname (MSVCRT.@)
  82  * NOTES
  83  *  Some apps (notably Mozilla) insist on writing to these, so the buffer
  84  *  must be large enough.
  85  */
  86 static char tzname_std[64] = "PST";
  87 static char tzname_dst[64] = "PDT";
  88 char *MSVCRT__tzname[2] = { tzname_std, tzname_dst };
  89
  90 static TIME_ZONE_INFORMATION tzi = {0};
  91 /*********************************************************************
  92  *              _tzset (MSVCRT.@)
  93  */
  94 void CDECL MSVCRT__tzset(void)
  95 {
  96     char *tz = MSVCRT_getenv("TZ");
  97     BOOL error;
  98
  99     _mlock(_TIME_LOCK);
 100     if(tz && tz[0]) {
 101         BOOL neg_zone = FALSE;
 102
 103         memset(&tzi, 0, sizeof(tzi));
 104
 105         /* Parse timezone information: tzn[+|-]hh[:mm[:ss]][dzn] */
 106         lstrcpynA(MSVCRT__tzname[0], tz, 3);
 107         tz += 3;
 108
 109         if(*tz == '-') {
 110             neg_zone = TRUE;
 111             tz++;
 112         }else if(*tz == '+') {
 113             tz++;
 114         }
 115         MSVCRT___timezone = strtol(tz, &tz, 10)*3600;
 116         if(*tz == ':') {
 117             MSVCRT___timezone += strtol(tz+1, &tz, 10)*60;
 118             if(*tz == ':')
 119                 MSVCRT___timezone += strtol(tz+1, &tz, 10);
 120         }
 121         if(neg_zone)
 122             MSVCRT___timezone = -MSVCRT___timezone;
 123
 124         MSVCRT___daylight = *tz;
 125         lstrcpynA(MSVCRT__tzname[1], tz, 3);
 126     }else if(GetTimeZoneInformation(&tzi) != TIME_ZONE_ID_INVALID) {
 127         MSVCRT___timezone = tzi.Bias*60;
 128         if(tzi.StandardDate.wMonth)
 129             MSVCRT___timezone += tzi.StandardBias*60;
 130
 131         if(tzi.DaylightDate.wMonth) {
 132             MSVCRT___daylight = 1;
 133             MSVCRT__dstbias = (tzi.DaylightBias-tzi.StandardBias)*60;
 134         }else {
 135             MSVCRT___daylight = 0;
 136             MSVCRT__dstbias = 0;
 137         }
 138
 139         if(!WideCharToMultiByte(CP_ACP, 0, tzi.StandardName, -1, MSVCRT__tzname[0],
 140                     sizeof(tzname_std), NULL, &error) || error)
 141             *MSVCRT__tzname[0] = 0;
 142         if(!WideCharToMultiByte(CP_ACP, 0, tzi.DaylightName, -1, MSVCRT__tzname[1],
 143                     sizeof(tzname_dst), NULL, &error) || error)
 144             *MSVCRT__tzname[0] = 0;
 145     }
 146     _munlock(_TIME_LOCK);
 147 }
 148
 149 static void _tzset_init(void)
 150 {
 151     static BOOL init = FALSE;
 152
 153     if(!init) {
 154         _mlock(_TIME_LOCK);
 155         if(!init) {
 156             MSVCRT__tzset();
 157             init = TRUE;
 158         }
 159         _munlock(_TIME_LOCK);
 160     }
 161 }
 162
 163 static BOOL is_dst(const SYSTEMTIME *st)
 164 {
 165     TIME_ZONE_INFORMATION tmp;
 166     SYSTEMTIME out;
 167
 168     if(!MSVCRT___daylight)
 169         return FALSE;
 170
 171     if(tzi.DaylightDate.wMonth) {
 172         tmp = tzi;
 173     }else if(st->wYear >= 2007) {
 174         memset(&tmp, 0, sizeof(tmp));
 175         tmp.StandardDate.wMonth = 11;
 176         tmp.StandardDate.wDay = 1;
 177         tmp.StandardDate.wHour = 2;
 178         tmp.DaylightDate.wMonth = 3;
 179         tmp.DaylightDate.wDay = 2;
 180         tmp.DaylightDate.wHour = 2;
 181     }else {
 182         memset(&tmp, 0, sizeof(tmp));
 183         tmp.StandardDate.wMonth = 10;
 184         tmp.StandardDate.wDay = 5;
 185         tmp.StandardDate.wHour = 2;
 186         tmp.DaylightDate.wMonth = 4;
 187         tmp.DaylightDate.wDay = 1;
 188         tmp.DaylightDate.wHour = 2;
 189     }
 190
 191     tmp.Bias = 0;
 192     tmp.StandardBias = 0;
 193     tmp.DaylightBias = MSVCRT__dstbias/60;
 194     if(!SystemTimeToTzSpecificLocalTime(&tmp, st, &out))
 195         return FALSE;
 196
 197     return memcmp(st, &out, sizeof(SYSTEMTIME));
 198 }
 199
 200 #define SECSPERDAY        86400
 201 /* 1601 to 1970 is 369 years plus 89 leap days */
 202 #define SECS_1601_TO_1970  ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
 203 #define TICKSPERSEC       10000000
 204 #define TICKSPERMSEC      10000
 205 #define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)
 206
 207 static MSVCRT___time64_t mktime_helper(struct MSVCRT_tm *mstm, BOOL local)
 208 {
 209     SYSTEMTIME st;
 210     FILETIME ft;
 211     MSVCRT___time64_t ret = 0;
 212     int i;
 213     BOOL use_dst = FALSE;
 214
 215     ret = mstm->tm_year + mstm->tm_mon/12;
 216     mstm->tm_mon %= 12;
 217     if(mstm->tm_mon < 0) {
 218         mstm->tm_mon += 12;
 219         ret--;
 220     }
 221
 222     if(ret<70 || ret>1100) {
 223         *MSVCRT__errno() = MSVCRT_EINVAL;
 224         return -1;
 225     }
 226
 227     memset(&st, 0, sizeof(SYSTEMTIME));
 228     st.wDay = 1;
 229     st.wMonth = mstm->tm_mon+1;
 230     st.wYear = ret+1900;
 231
 232     if(!SystemTimeToFileTime(&st, &ft)) {
 233         *MSVCRT__errno() = MSVCRT_EINVAL;
 234         return -1;
 235     }
 236
 237     ret = ((MSVCRT___time64_t)ft.dwHighDateTime<<32)+ft.dwLowDateTime;
 238     ret += (MSVCRT___time64_t)mstm->tm_sec*TICKSPERSEC;
 239     ret += (MSVCRT___time64_t)mstm->tm_min*60*TICKSPERSEC;
 240     ret += (MSVCRT___time64_t)mstm->tm_hour*60*60*TICKSPERSEC;
 241     ret += (MSVCRT___time64_t)(mstm->tm_mday-1)*SECSPERDAY*TICKSPERSEC;
 242
 243     ft.dwLowDateTime = ret & 0xffffffff;
 244     ft.dwHighDateTime = ret >> 32;
 245     FileTimeToSystemTime(&ft, &st);
 246
 247     if(local) {
 248         _tzset_init();
 249         use_dst = is_dst(&st);
 250         if((mstm->tm_isdst<=-1 && use_dst) || (mstm->tm_isdst>=1)) {
 251             SYSTEMTIME tmp;
 252
 253             ret += (MSVCRT___time64_t)MSVCRT__dstbias*TICKSPERSEC;
 254
 255             ft.dwLowDateTime = ret & 0xffffffff;
 256             ft.dwHighDateTime = ret >> 32;
 257             FileTimeToSystemTime(&ft, &tmp);
 258
 259             if(!is_dst(&tmp)) {
 260                 st = tmp;
 261                 use_dst = FALSE;
 262             }else {
 263                 use_dst = TRUE;
 264             }
 265         }else if(mstm->tm_isdst==0 && use_dst) {
 266             ret -= (MSVCRT___time64_t)MSVCRT__dstbias*TICKSPERSEC;
 267             ft.dwLowDateTime = ret & 0xffffffff;
 268             ft.dwHighDateTime = ret >> 32;
 269             FileTimeToSystemTime(&ft, &st);
 270             ret += (MSVCRT___time64_t)MSVCRT__dstbias*TICKSPERSEC;
 271         }
 272         ret += (MSVCRT___time64_t)MSVCRT___timezone*TICKSPERSEC;
 273     }
 274
 275     mstm->tm_sec = st.wSecond;
 276     mstm->tm_min = st.wMinute;
 277     mstm->tm_hour = st.wHour;
 278     mstm->tm_mday = st.wDay;
 279     mstm->tm_mon = st.wMonth-1;
 280     mstm->tm_year = st.wYear-1900;
 281     mstm->tm_wday = st.wDayOfWeek;
 282     for(i=mstm->tm_yday=0; i<st.wMonth-1; i++)
 283         mstm->tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
 284     mstm->tm_yday += st.wDay-1;
 285     mstm->tm_isdst = use_dst ? 1 : 0;
 286
 287     if(ret < TICKS_1601_TO_1970) {
 288         *MSVCRT__errno() = MSVCRT_EINVAL;
 289         return -1;
 290     }
 291     ret = (ret-TICKS_1601_TO_1970)/TICKSPERSEC;
 292     return ret;
 293 }
 294
 295 /**********************************************************************
 296  *              _mktime64 (MSVCRT.@)
 297  */
 298 MSVCRT___time64_t CDECL MSVCRT__mktime64(struct MSVCRT_tm *mstm)
 299 {
 300     return mktime_helper(mstm, TRUE);
 301 }
 302
 303 /**********************************************************************
 304  *              _mktime32 (MSVCRT.@)
 305  */
 306 MSVCRT___time32_t CDECL MSVCRT__mktime32(struct MSVCRT_tm *mstm)
 307 {
 308     MSVCRT___time64_t ret = MSVCRT__mktime64( mstm );
 309     return ret == (MSVCRT___time32_t)ret ? ret : -1;
 310 }
 311
 312 /**********************************************************************
 313  *              mktime (MSVCRT.@)
 314  */
 315 #ifdef _WIN64
 316 MSVCRT___time64_t CDECL MSVCRT_mktime(struct MSVCRT_tm *mstm)
 317 {
 318     return MSVCRT__mktime64( mstm );
 319 }
 320 #else
 321 MSVCRT___time32_t CDECL MSVCRT_mktime(struct MSVCRT_tm *mstm)
 322 {
 323     return MSVCRT__mktime32( mstm );
 324 }
 325 #endif
 326
 327 /**********************************************************************
 328  *              _mkgmtime64 (MSVCRT.@)
 329  *
 330  * time->tm_isdst value is ignored
 331  */
 332 MSVCRT___time64_t CDECL MSVCRT__mkgmtime64(struct MSVCRT_tm *time)
 333 {
 334     return mktime_helper(time, FALSE);
 335 }
 336
 337 /**********************************************************************
 338  *              _mkgmtime32 (MSVCRT.@)
 339  */
 340 MSVCRT___time32_t CDECL MSVCRT__mkgmtime32(struct MSVCRT_tm *time)
 341 {
 342     MSVCRT___time64_t ret = MSVCRT__mkgmtime64(time);
 343     return ret == (MSVCRT___time32_t)ret ? ret : -1;
 344 }
 345
 346 /**********************************************************************
 347  *              _mkgmtime (MSVCRT.@)
 348  */
 349 #ifdef _WIN64
 350 MSVCRT___time64_t CDECL MSVCRT__mkgmtime(struct MSVCRT_tm *time)
 351 {
 352     return MSVCRT__mkgmtime64(time);
 353 }
 354 #else
 355 MSVCRT___time32_t CDECL MSVCRT__mkgmtime(struct MSVCRT_tm *time)
 356 {
 357     return MSVCRT__mkgmtime32(time);
 358 }
 359 #endif
 360
 361 /*********************************************************************
 362  *      _localtime64_s (MSVCRT.@)
 363  */
 364 int CDECL _localtime64_s(struct MSVCRT_tm *res, const MSVCRT___time64_t *secs)
 365 {
 366     int i;
 367     FILETIME ft;
 368     SYSTEMTIME st;
 369     ULONGLONG time;
 370
 371     if (!res || !secs || *secs < 0 || *secs > _MAX__TIME64_T)
 372     {
 373         if (res)
 374             write_invalid_msvcrt_tm(res);
 375
 376         *MSVCRT__errno() = MSVCRT_EINVAL;
 377         return MSVCRT_EINVAL;
 378     }
 379
 380     _tzset_init();
 381     time = (*secs - MSVCRT___timezone) * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
 382
 383     ft.dwHighDateTime = (UINT)(time >> 32);
 384     ft.dwLowDateTime  = (UINT)time;
 385     FileTimeToSystemTime(&ft, &st);
 386
 387     res->tm_isdst = is_dst(&st) ? 1 : 0;
 388     if(res->tm_isdst) {
 389         time -= MSVCRT__dstbias * (ULONGLONG)TICKSPERSEC;
 390         ft.dwHighDateTime = (UINT)(time >> 32);
 391         ft.dwLowDateTime  = (UINT)time;
 392         FileTimeToSystemTime(&ft, &st);
 393     }
 394
 395     res->tm_sec  = st.wSecond;
 396     res->tm_min  = st.wMinute;
 397     res->tm_hour = st.wHour;
 398     res->tm_mday = st.wDay;
 399     res->tm_year = st.wYear - 1900;
 400     res->tm_mon  = st.wMonth - 1;
 401     res->tm_wday = st.wDayOfWeek;
 402     for (i = res->tm_yday = 0; i < st.wMonth - 1; i++)
 403         res->tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
 404     res->tm_yday += st.wDay - 1;
 405
 406     return 0;
 407 }
 408
 409 /*********************************************************************
 410  *      _localtime64 (MSVCRT.@)
 411  */
 412 struct MSVCRT_tm* CDECL MSVCRT__localtime64(const MSVCRT___time64_t* secs)
 413 {
 414     thread_data_t *data = msvcrt_get_thread_data();
 415
 416     if(!data->time_buffer)
 417         data->time_buffer = MSVCRT_malloc(sizeof(struct MSVCRT_tm));
 418
 419     if(_localtime64_s(data->time_buffer, secs))
 420         return NULL;
 421     return data->time_buffer;
 422 }
 423
 424 /*********************************************************************
 425  *      _localtime32 (MSVCRT.@)
 426  */
 427 struct MSVCRT_tm* CDECL MSVCRT__localtime32(const MSVCRT___time32_t* secs)
 428 {
 429     MSVCRT___time64_t secs64;
 430
 431     if(!secs)
 432         return NULL;
 433
 434     secs64 = *secs;
 435     return MSVCRT__localtime64( &secs64 );
 436 }
 437
 438 /*********************************************************************
 439  *      _localtime32_s (MSVCRT.@)
 440  */
 441 int CDECL _localtime32_s(struct MSVCRT_tm *time, const MSVCRT___time32_t *secs)
 442 {
 443     MSVCRT___time64_t secs64;
 444
 445     if (!time || !secs || *secs < 0)
 446     {
 447         if (time)
 448             write_invalid_msvcrt_tm(time);
 449
 450         *MSVCRT__errno() = MSVCRT_EINVAL;
 451         return MSVCRT_EINVAL;
 452     }
 453
 454     secs64 = *secs;
 455     return _localtime64_s(time, &secs64);
 456 }
 457
 458 /*********************************************************************
 459  *      localtime (MSVCRT.@)
 460  */
 461 #ifdef _WIN64
 462 struct MSVCRT_tm* CDECL MSVCRT_localtime(const MSVCRT___time64_t* secs)
 463 {
 464     return MSVCRT__localtime64( secs );
 465 }
 466 #else
 467 struct MSVCRT_tm* CDECL MSVCRT_localtime(const MSVCRT___time32_t* secs)
 468 {
 469     return MSVCRT__localtime32( secs );
 470 }
 471 #endif
 472
 473 /*********************************************************************
 474  *      _gmtime64 (MSVCRT.@)
 475  */
 476 int CDECL MSVCRT__gmtime64_s(struct MSVCRT_tm *res, const MSVCRT___time64_t *secs)
 477 {
 478     int i;
 479     FILETIME ft;
 480     SYSTEMTIME st;
 481     ULONGLONG time;
 482
 483     if (!res || !secs || *secs < 0 || *secs > _MAX__TIME64_T) {
 484         if (res) {
 485             write_invalid_msvcrt_tm(res);
 486         }
 487
 488         *MSVCRT__errno() = MSVCRT_EINVAL;
 489         return MSVCRT_EINVAL;
 490     }
 491
 492     time = *secs * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
 493
 494     ft.dwHighDateTime = (UINT)(time >> 32);
 495     ft.dwLowDateTime  = (UINT)time;
 496
 497     FileTimeToSystemTime(&ft, &st);
 498
 499     res->tm_sec  = st.wSecond;
 500     res->tm_min  = st.wMinute;
 501     res->tm_hour = st.wHour;
 502     res->tm_mday = st.wDay;
 503     res->tm_year = st.wYear - 1900;
 504     res->tm_mon  = st.wMonth - 1;
 505     res->tm_wday = st.wDayOfWeek;
 506     for (i = res->tm_yday = 0; i < st.wMonth - 1; i++) {
 507         res->tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
 508     }
 509
 510     res->tm_yday += st.wDay - 1;
 511     res->tm_isdst = 0;
 512
 513     return 0;
 514 }
 515
 516 /*********************************************************************
 517  *      _gmtime64 (MSVCRT.@)
 518  */
 519 struct MSVCRT_tm* CDECL MSVCRT__gmtime64(const MSVCRT___time64_t *secs)
 520 {
 521     thread_data_t * const data = msvcrt_get_thread_data();
 522
 523     if(!data->time_buffer)
 524         data->time_buffer = MSVCRT_malloc(sizeof(struct MSVCRT_tm));
 525
 526     if(MSVCRT__gmtime64_s(data->time_buffer, secs))
 527         return NULL;
 528     return data->time_buffer;
 529 }
 530
 531 /*********************************************************************
 532  *      _gmtime32_s (MSVCRT.@)
 533  */
 534 int CDECL MSVCRT__gmtime32_s(struct MSVCRT_tm *res, const MSVCRT___time32_t *secs)
 535 {
 536     MSVCRT___time64_t secs64;
 537
 538     if(secs) {
 539         secs64 = *secs;
 540         return MSVCRT__gmtime64_s(res, &secs64);
 541     }
 542     return MSVCRT__gmtime64_s(res, NULL);
 543 }
 544
 545 /*********************************************************************
 546  *      _gmtime32 (MSVCRT.@)
 547  */
 548 struct MSVCRT_tm* CDECL MSVCRT__gmtime32(const MSVCRT___time32_t* secs)
 549 {
 550     MSVCRT___time64_t secs64;
 551
 552     if(!secs)
 553         return NULL;
 554
 555     secs64 = *secs;
 556     return MSVCRT__gmtime64( &secs64 );
 557 }
 558
 559 /*********************************************************************
 560  *      gmtime (MSVCRT.@)
 561  */
 562 #ifdef _WIN64
 563 struct MSVCRT_tm* CDECL MSVCRT_gmtime(const MSVCRT___time64_t* secs)
 564 {
 565     return MSVCRT__gmtime64( secs );
 566 }
 567 #else
 568 struct MSVCRT_tm* CDECL MSVCRT_gmtime(const MSVCRT___time32_t* secs)
 569 {
 570     return MSVCRT__gmtime32( secs );
 571 }
 572 #endif
 573
 574 /**********************************************************************
 575  *              _strdate (MSVCRT.@)
 576  */
 577 char* CDECL MSVCRT__strdate(char* date)
 578 {
 579   static const char format[] = "MM'/'dd'/'yy";
 580
 581   GetDateFormatA(LOCALE_NEUTRAL, 0, NULL, format, date, 9);
 582
 583   return date;
 584 }
 585
 586 /**********************************************************************
 587  *              _strdate_s (MSVCRT.@)
 588  */
 589 int CDECL _strdate_s(char* date, MSVCRT_size_t size)
 590 {
 591     if(date && size)
 592         date[0] = '\0';
 593
 594     if(!date) {
 595         *MSVCRT__errno() = MSVCRT_EINVAL;
 596         return MSVCRT_EINVAL;
 597     }
 598
 599     if(size < 9) {
 600         *MSVCRT__errno() = MSVCRT_ERANGE;
 601         return MSVCRT_ERANGE;
 602     }
 603
 604     MSVCRT__strdate(date);
 605     return 0;
 606 }
 607
 608 /**********************************************************************
 609  *              _wstrdate (MSVCRT.@)
 610  */
 611 MSVCRT_wchar_t* CDECL MSVCRT__wstrdate(MSVCRT_wchar_t* date)
 612 {
 613   static const WCHAR format[] = { 'M','M','\'','/','\'','d','d','\'','/','\'','y','y',0 };
 614
 615   GetDateFormatW(LOCALE_NEUTRAL, 0, NULL, format, date, 9);
 616
 617   return date;
 618 }
 619
 620 /**********************************************************************
 621  *              _wstrdate_s (MSVCRT.@)
 622  */
 623 int CDECL _wstrdate_s(MSVCRT_wchar_t* date, MSVCRT_size_t size)
 624 {
 625     if(date && size)
 626         date[0] = '\0';
 627
 628     if(!date) {
 629         *MSVCRT__errno() = MSVCRT_EINVAL;
 630         return MSVCRT_EINVAL;
 631     }
 632
 633     if(size < 9) {
 634         *MSVCRT__errno() = MSVCRT_ERANGE;
 635         return MSVCRT_ERANGE;
 636     }
 637
 638     MSVCRT__wstrdate(date);
 639     return 0;
 640 }
 641
 642 /*********************************************************************
 643  *              _strtime (MSVCRT.@)
 644  */
 645 char* CDECL MSVCRT__strtime(char* time)
 646 {
 647   static const char format[] = "HH':'mm':'ss";
 648
 649   GetTimeFormatA(LOCALE_NEUTRAL, 0, NULL, format, time, 9);
 650
 651   return time;
 652 }
 653
 654 /*********************************************************************
 655  *              _strtime_s (MSVCRT.@)
 656  */
 657 int CDECL _strtime_s(char* time, MSVCRT_size_t size)
 658 {
 659     if(time && size)
 660         time[0] = '\0';
 661
 662     if(!time) {
 663         *MSVCRT__errno() = MSVCRT_EINVAL;
 664         return MSVCRT_EINVAL;
 665     }
 666
 667     if(size < 9) {
 668         *MSVCRT__errno() = MSVCRT_ERANGE;
 669         return MSVCRT_ERANGE;
 670     }
 671
 672     MSVCRT__strtime(time);
 673     return 0;
 674 }
 675
 676 /*********************************************************************
 677  *              _wstrtime (MSVCRT.@)
 678  */
 679 MSVCRT_wchar_t* CDECL MSVCRT__wstrtime(MSVCRT_wchar_t* time)
 680 {
 681   static const WCHAR format[] = { 'H','H','\'',':','\'','m','m','\'',':','\'','s','s',0 };
 682
 683   GetTimeFormatW(LOCALE_NEUTRAL, 0, NULL, format, time, 9);
 684
 685   return time;
 686 }
 687
 688 /*********************************************************************
 689  *              _wstrtime_s (MSVCRT.@)
 690  */
 691 int CDECL _wstrtime_s(MSVCRT_wchar_t* time, MSVCRT_size_t size)
 692 {
 693     if(time && size)
 694         time[0] = '\0';
 695
 696     if(!time) {
 697         *MSVCRT__errno() = MSVCRT_EINVAL;
 698         return MSVCRT_EINVAL;
 699     }
 700
 701     if(size < 9) {
 702         *MSVCRT__errno() = MSVCRT_ERANGE;
 703         return MSVCRT_ERANGE;
 704     }
 705
 706     MSVCRT__wstrtime(time);
 707     return 0;
 708 }
 709
 710 /*********************************************************************
 711  *              clock (MSVCRT.@)
 712  */
 713 MSVCRT_clock_t CDECL MSVCRT_clock(void)
 714 {
 715     static LONGLONG start_time;
 716     LARGE_INTEGER systime;
 717
 718     if(!start_time) {
 719         KERNEL_USER_TIMES pti;
 720
 721         /* while Linux's clock returns user time, Windows' clock
 722          * returns wall-clock time from process start.  cache the
 723          * process start time since it won't change and to avoid
 724          * wineserver round-trip overhead */
 725         if(NtQueryInformationProcess(GetCurrentProcess(), ProcessTimes, &pti, sizeof(pti), NULL))
 726             return -1;
 727         start_time = pti.CreateTime.QuadPart;
 728     }
 729
 730     NtQuerySystemTime(&systime);
 731     return (systime.QuadPart - start_time) * MSVCRT_CLOCKS_PER_SEC / TICKSPERSEC;
 732 }
 733
 734 /*********************************************************************
 735  *              _difftime64 (MSVCRT.@)
 736  */
 737 double CDECL MSVCRT__difftime64(MSVCRT___time64_t time1, MSVCRT___time64_t time2)
 738 {
 739   return (double)(time1 - time2);
 740 }
 741
 742 /*********************************************************************
 743  *              _difftime32 (MSVCRT.@)
 744  */
 745 double CDECL MSVCRT__difftime32(MSVCRT___time32_t time1, MSVCRT___time32_t time2)
 746 {
 747   return (double)(time1 - time2);
 748 }
 749
 750 /*********************************************************************
 751  *              difftime (MSVCRT.@)
 752  */
 753 #ifdef _WIN64
 754 double CDECL MSVCRT_difftime(MSVCRT___time64_t time1, MSVCRT___time64_t time2)
 755 {
 756     return MSVCRT__difftime64( time1, time2 );
 757 }
 758 #else
 759 double CDECL MSVCRT_difftime(MSVCRT___time32_t time1, MSVCRT___time32_t time2)
 760 {
 761     return MSVCRT__difftime32( time1, time2 );
 762 }
 763 #endif
 764
 765 /*********************************************************************
 766  *              _ftime64 (MSVCRT.@)
 767  */
 768 void CDECL MSVCRT__ftime64(struct MSVCRT___timeb64 *buf)
 769 {
 770   FILETIME ft;
 771   ULONGLONG time;
 772
 773   _tzset_init();
 774
 775   GetSystemTimeAsFileTime(&ft);
 776
 777   time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
 778
 779   buf->time = time / TICKSPERSEC - SECS_1601_TO_1970;
 780   buf->millitm = (time % TICKSPERSEC) / TICKSPERMSEC;
 781   buf->timezone = MSVCRT___timezone / 60;
 782   buf->dstflag = GetDaylightFlag();
 783 }
 784
 785 /*********************************************************************
 786  *              _ftime64_s (MSVCRT.@)
 787  */
 788 int CDECL MSVCRT__ftime64_s(struct MSVCRT___timeb64 *buf)
 789 {
 790     if (!MSVCRT_CHECK_PMT( buf != NULL )) return MSVCRT_EINVAL;
 791     MSVCRT__ftime64(buf);
 792     return 0;
 793 }
 794
 795 /*********************************************************************
 796  *              _ftime32 (MSVCRT.@)
 797  */
 798 void CDECL MSVCRT__ftime32(struct MSVCRT___timeb32 *buf)
 799 {
 800     struct MSVCRT___timeb64 buf64;
 801
 802     MSVCRT__ftime64( &buf64 );
 803     buf->time     = buf64.time;
 804     buf->millitm  = buf64.millitm;
 805     buf->timezone = buf64.timezone;
 806     buf->dstflag  = buf64.dstflag;
 807 }
 808
 809 /*********************************************************************
 810  *              _ftime32_s (MSVCRT.@)
 811  */
 812 int CDECL MSVCRT__ftime32_s(struct MSVCRT___timeb32 *buf)
 813 {
 814     if (!MSVCRT_CHECK_PMT( buf != NULL )) return MSVCRT_EINVAL;
 815     MSVCRT__ftime32(buf);
 816     return 0;
 817 }
 818
 819 /*********************************************************************
 820  *              _ftime (MSVCRT.@)
 821  */
 822 #ifdef _WIN64
 823 void CDECL MSVCRT__ftime(struct MSVCRT___timeb64 *buf)
 824 {
 825     MSVCRT__ftime64( buf );
 826 }
 827 #else
 828 void CDECL MSVCRT__ftime(struct MSVCRT___timeb32 *buf)
 829 {
 830     MSVCRT__ftime32( buf );
 831 }
 832 #endif
 833
 834 /*********************************************************************
 835  *              _time64 (MSVCRT.@)
 836  */
 837 MSVCRT___time64_t CDECL MSVCRT__time64(MSVCRT___time64_t *buf)
 838 {
 839     MSVCRT___time64_t curtime;
 840     struct MSVCRT___timeb64 tb;
 841
 842     MSVCRT__ftime64(&tb);
 843
 844     curtime = tb.time;
 845     return buf ? *buf = curtime : curtime;
 846 }
 847
 848 /*********************************************************************
 849  *              _time32 (MSVCRT.@)
 850  */
 851 MSVCRT___time32_t CDECL MSVCRT__time32(MSVCRT___time32_t *buf)
 852 {
 853     MSVCRT___time32_t curtime;
 854     struct MSVCRT___timeb64 tb;
 855
 856     MSVCRT__ftime64(&tb);
 857
 858     curtime = tb.time;
 859     return buf ? *buf = curtime : curtime;
 860 }
 861
 862 /*********************************************************************
 863  *              time (MSVCRT.@)
 864  */
 865 #ifdef _WIN64
 866 MSVCRT___time64_t CDECL MSVCRT_time(MSVCRT___time64_t* buf)
 867 {
 868     return MSVCRT__time64( buf );
 869 }
 870 #else
 871 MSVCRT___time32_t CDECL MSVCRT_time(MSVCRT___time32_t* buf)
 872 {
 873     return MSVCRT__time32( buf );
 874 }
 875 #endif
 876
 877 /*********************************************************************
 878  *              __p__daylight (MSVCRT.@)
 879  */
 880 int * CDECL MSVCRT___p__daylight(void)
 881 {
 882         return &MSVCRT___daylight;
 883 }
 884
 885 /*********************************************************************
 886  *              __p__dstbias (MSVCRT.@)
 887  */
 888 int * CDECL MSVCRT___p__dstbias(void)
 889 {
 890     return &MSVCRT__dstbias;
 891 }
 892
 893 #if _MSVCR_VER >= 80
 894 /*********************************************************************
 895  *              _get_dstbias (MSVCR80.@)
 896  */
 897 int CDECL  MSVCRT__get_dstbias(int *seconds)
 898 {
 899     if (!MSVCRT_CHECK_PMT(seconds != NULL)) return MSVCRT_EINVAL;
 900     *seconds = MSVCRT__dstbias;
 901     return 0;
 902 }
 903 #endif
 904
 905 /*********************************************************************
 906  *              __p__timezone (MSVCRT.@)
 907  */
 908 MSVCRT_long * CDECL MSVCRT___p__timezone(void)
 909 {
 910         return &MSVCRT___timezone;
 911 }
 912
 913 /*********************************************************************
 914  *              _get_tzname (MSVCRT.@)
 915  */
 916 int CDECL MSVCRT__get_tzname(MSVCRT_size_t *ret, char *buf, MSVCRT_size_t bufsize, int index)
 917 {
 918     char *timezone;
 919
 920     switch(index)
 921     {
 922     case 0:
 923         timezone = tzname_std;
 924         break;
 925     case 1:
 926         timezone = tzname_dst;
 927         break;
 928     default:
 929         *MSVCRT__errno() = MSVCRT_EINVAL;
 930         return MSVCRT_EINVAL;
 931     }
 932
 933     if(!ret || (!buf && bufsize > 0) || (buf && !bufsize))
 934     {
 935         *MSVCRT__errno() = MSVCRT_EINVAL;
 936         return MSVCRT_EINVAL;
 937     }
 938
 939     *ret = strlen(timezone)+1;
 940     if(!buf && !bufsize)
 941         return 0;
 942     if(*ret > bufsize)
 943     {
 944         buf[0] = 0;
 945         return MSVCRT_ERANGE;
 946     }
 947
 948     strcpy(buf, timezone);
 949     return 0;
 950 }
 951
 952 /*********************************************************************
 953  *              __p_tzname (MSVCRT.@)
 954  */
 955 char ** CDECL __p__tzname(void)
 956 {
 957         return MSVCRT__tzname;
 958 }
 959
 960 static inline BOOL strftime_date(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
 961         BOOL alternate, const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data)
 962 {
 963     char *format;
 964     SYSTEMTIME st;
 965     MSVCRT_size_t ret;
 966     LCID lcid;
 967
 968     st.wYear = mstm->tm_year + 1900;
 969     st.wMonth = mstm->tm_mon + 1;
 970     st.wDayOfWeek = mstm->tm_wday;
 971     st.wDay = mstm->tm_mday;
 972     st.wHour = mstm->tm_hour;
 973     st.wMinute = mstm->tm_min;
 974     st.wSecond = mstm->tm_sec;
 975     st.wMilliseconds = 0;
 976
 977 #if _MSVCR_VER < 110
 978     lcid = time_data->lcid;
 979 #else
 980     lcid = LocaleNameToLCID(time_data->locname, 0);
 981 #endif
 982
 983     format = alternate ? time_data->str.names.date : time_data->str.names.short_date;
 984     ret = GetDateFormatA(lcid, 0, &st, format, NULL, 0);
 985     if(ret && ret<max-*pos)
 986         ret = GetDateFormatA(lcid, 0, &st, format, str+*pos, max-*pos);
 987     if(!ret) {
 988         *str = 0;
 989         *MSVCRT__errno() = MSVCRT_EINVAL;
 990         return FALSE;
 991     }else if(ret > max-*pos) {
 992         *str = 0;
 993         *MSVCRT__errno() = MSVCRT_ERANGE;
 994         return FALSE;
 995     }
 996     *pos += ret-1;
 997     return TRUE;
 998 }
 999
1000 static inline BOOL strftime_time(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
1001         const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data)
1002 {
1003     SYSTEMTIME st;
1004     MSVCRT_size_t ret;
1005     LCID lcid;
1006
1007     st.wYear = mstm->tm_year + 1900;
1008     st.wMonth = mstm->tm_mon + 1;
1009     st.wDayOfWeek = mstm->tm_wday;
1010     st.wDay = mstm->tm_mday;
1011     st.wHour = mstm->tm_hour;
1012     st.wMinute = mstm->tm_min;
1013     st.wSecond = mstm->tm_sec;
1014     st.wMilliseconds = 0;
1015
1016 #if _MSVCR_VER < 110
1017     lcid = time_data->lcid;
1018 #else
1019     lcid = LocaleNameToLCID(time_data->locname, 0);
1020 #endif
1021
1022     ret = GetTimeFormatA(lcid, 0, &st, time_data->str.names.time, NULL, 0);
1023     if(ret && ret<max-*pos)
1024         ret = GetTimeFormatA(lcid, 0, &st, time_data->str.names.time,
1025                 str+*pos, max-*pos);
1026     if(!ret) {
1027         *str = 0;
1028         *MSVCRT__errno() = MSVCRT_EINVAL;
1029         return FALSE;
1030     }else if(ret > max-*pos) {
1031         *str = 0;
1032         *MSVCRT__errno() = MSVCRT_ERANGE;
1033         return FALSE;
1034     }
1035     *pos += ret-1;
1036     return TRUE;
1037 }
1038
1039 static inline BOOL strftime_str(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max, char *src)
1040 {
1041     MSVCRT_size_t len = strlen(src);
1042     if(len > max-*pos) {
1043         *str = 0;
1044         *MSVCRT__errno() = MSVCRT_ERANGE;
1045         return FALSE;
1046     }
1047
1048     memcpy(str+*pos, src, len);
1049     *pos += len;
1050     return TRUE;
1051 }
1052
1053 static inline BOOL strftime_int(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
1054         int src, int prec, int l, int h)
1055 {
1056     MSVCRT_size_t len;
1057
1058     if(src<l || src>h) {
1059         *str = 0;
1060         *MSVCRT__errno() = MSVCRT_EINVAL;
1061         return FALSE;
1062     }
1063
1064     len = MSVCRT__snprintf(str+*pos, max-*pos, "%0*d", prec, src);
1065     if(len == -1) {
1066         *str = 0;
1067         *MSVCRT__errno() = MSVCRT_ERANGE;
1068         return FALSE;
1069     }
1070
1071     *pos += len;
1072     return TRUE;
1073 }
1074
1075 static MSVCRT_size_t strftime_helper(char *str, MSVCRT_size_t max, const char *format,
1076         const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data, MSVCRT__locale_t loc)
1077 {
1078     MSVCRT_size_t ret, tmp;
1079     BOOL alternate;
1080
1081     TRACE("(%p %ld %s %p %p)\n", str, max, format, mstm, time_data);
1082
1083     if(!str || !format) {
1084         if(str && max)
1085             *str = 0;
1086         *MSVCRT__errno() = MSVCRT_EINVAL;
1087         return 0;
1088     }
1089
1090     if(!time_data)
1091         time_data = loc ? loc->locinfo->lc_time_curr : get_locinfo()->lc_time_curr;
1092
1093     for(ret=0; *format && ret<max; format++) {
1094         if(*format != '%') {
1095             if(MSVCRT__isleadbyte_l((unsigned char)*format, loc)) {
1096                 str[ret++] = *(format++);
1097                 if(ret == max) continue;
1098                 if(!str[ret]) goto einval_error;
1099             }
1100             str[ret++] = *format;
1101             continue;
1102         }
1103
1104         format++;
1105         if(*format == '#') {
1106             alternate = TRUE;
1107             format++;
1108         }else {
1109             alternate = FALSE;
1110         }
1111
1112         if(!mstm)
1113             goto einval_error;
1114
1115         switch(*format) {
1116         case 'c':
1117             if(!strftime_date(str, &ret, max, alternate, mstm, time_data))
1118                 return 0;
1119             if(ret < max)
1120                 str[ret++] = ' ';
1121             if(!strftime_time(str, &ret, max, mstm, time_data))
1122                 return 0;
1123             break;
1124         case 'x':
1125             if(!strftime_date(str, &ret, max, alternate, mstm, time_data))
1126                 return 0;
1127             break;
1128         case 'X':
1129             if(!strftime_time(str, &ret, max, mstm, time_data))
1130                 return 0;
1131             break;
1132         case 'a':
1133             if(mstm->tm_wday<0 || mstm->tm_wday>6)
1134                 goto einval_error;
1135             if(!strftime_str(str, &ret, max, time_data->str.names.short_wday[mstm->tm_wday]))
1136                 return 0;
1137             break;
1138         case 'A':
1139             if(mstm->tm_wday<0 || mstm->tm_wday>6)
1140                 goto einval_error;
1141             if(!strftime_str(str, &ret, max, time_data->str.names.wday[mstm->tm_wday]))
1142                 return 0;
1143             break;
1144         case 'b':
1145             if(mstm->tm_mon<0 || mstm->tm_mon>11)
1146                 goto einval_error;
1147             if(!strftime_str(str, &ret, max, time_data->str.names.short_mon[mstm->tm_mon]))
1148                 return 0;
1149             break;
1150         case 'B':
1151             if(mstm->tm_mon<0 || mstm->tm_mon>11)
1152                 goto einval_error;
1153             if(!strftime_str(str, &ret, max, time_data->str.names.mon[mstm->tm_mon]))
1154                 return 0;
1155             break;
1156         case 'd':
1157             if(!strftime_int(str, &ret, max, mstm->tm_mday, alternate ? 0 : 2, 0, 31))
1158                 return 0;
1159             break;
1160         case 'H':
1161             if(!strftime_int(str, &ret, max, mstm->tm_hour, alternate ? 0 : 2, 0, 23))
1162                 return 0;
1163             break;
1164         case 'I':
1165             tmp = mstm->tm_hour;
1166             if(tmp > 12)
1167                 tmp -= 12;
1168             else if(!tmp)
1169                 tmp = 12;
1170             if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 2, 1, 12))
1171                 return 0;
1172             break;
1173         case 'j':
1174             if(!strftime_int(str, &ret, max, mstm->tm_yday+1, alternate ? 0 : 3, 1, 366))
1175                 return 0;
1176             break;
1177         case 'm':
1178             if(!strftime_int(str, &ret, max, mstm->tm_mon+1, alternate ? 0 : 2, 1, 12))
1179                 return 0;
1180             break;
1181         case 'M':
1182             if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
1183                 return 0;
1184             break;
1185         case 'p':
1186             if(mstm->tm_hour<0 || mstm->tm_hour>23)
1187                 goto einval_error;
1188             if(!strftime_str(str, &ret, max, mstm->tm_hour<12 ?
1189                         time_data->str.names.am : time_data->str.names.pm))
1190                 return 0;
1191             break;
1192         case 'S':
1193             if(!strftime_int(str, &ret, max, mstm->tm_sec, alternate ? 0 : 2, 0, 59))
1194                 return 0;
1195             break;
1196         case 'w':
1197             if(!strftime_int(str, &ret, max, mstm->tm_wday, 0, 0, 6))
1198                 return 0;
1199             break;
1200         case 'y':
1201             if(!strftime_int(str, &ret, max, mstm->tm_year%100, alternate ? 0 : 2, 0, 99))
1202                 return 0;
1203             break;
1204         case 'Y':
1205             tmp = 1900+mstm->tm_year;
1206             if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 4, 0, 9999))
1207                 return 0;
1208             break;
1209         case 'z':
1210         case 'Z':
1211             MSVCRT__tzset();
1212             if(MSVCRT__get_tzname(&tmp, str+ret, max-ret, mstm->tm_isdst ? 1 : 0))
1213                 return 0;
1214             ret += tmp-1;
1215             break;
1216         case 'U':
1217         case 'W':
1218             if(mstm->tm_wday<0 || mstm->tm_wday>6 || mstm->tm_yday<0 || mstm->tm_yday>365)
1219                 goto einval_error;
1220             if(*format == 'U')
1221                 tmp = mstm->tm_wday;
1222             else if(!mstm->tm_wday)
1223                 tmp = 6;
1224             else
1225                 tmp = mstm->tm_wday-1;
1226
1227             tmp = mstm->tm_yday/7 + (tmp<=mstm->tm_yday%7);
1228             if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 2, 0, 53))
1229                 return 0;
1230             break;
1231         case '%':
1232             str[ret++] = '%';
1233             break;
1234         default:
1235             WARN("unknown format %c\n", *format);
1236             goto einval_error;
1237         }
1238     }
1239
1240     if(ret == max) {
1241         if(max)
1242             *str = 0;
1243         *MSVCRT__errno() = MSVCRT_ERANGE;
1244         return 0;
1245     }
1246
1247     str[ret] = 0;
1248     return ret;
1249
1250 einval_error:
1251     *str = 0;
1252     *MSVCRT__errno() = MSVCRT_EINVAL;
1253     return 0;
1254 }
1255
1256 #if _MSVCR_VER >= 80
1257 /********************************************************************
1258  *     _strftime_l (MSVCR80.@)
1259  */
1260 MSVCRT_size_t CDECL MSVCRT__strftime_l( char *str, MSVCRT_size_t max, const char *format,
1261         const struct MSVCRT_tm *mstm, MSVCRT__locale_t loc )
1262 {
1263     return strftime_helper(str, max, format, mstm, NULL, loc);
1264 }
1265 #endif
1266
1267 /*********************************************************************
1268  *              _Strftime (MSVCRT.@)
1269  */
1270 MSVCRT_size_t CDECL _Strftime(char *str, MSVCRT_size_t max, const char *format,
1271         const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data)
1272 {
1273     return strftime_helper(str, max, format, mstm, time_data, NULL);
1274 }
1275
1276 /*********************************************************************
1277  *              strftime (MSVCRT.@)
1278  */
1279 MSVCRT_size_t CDECL MSVCRT_strftime( char *str, MSVCRT_size_t max, const char *format,
1280                                      const struct MSVCRT_tm *mstm )
1281 {
1282     return strftime_helper(str, max, format, mstm, NULL, NULL);
1283 }
1284
1285 static MSVCRT_size_t wcsftime_helper( MSVCRT_wchar_t *str, MSVCRT_size_t max,
1286         const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm,
1287         MSVCRT___lc_time_data *time_data, MSVCRT__locale_t loc )
1288 {
1289     char *s, *fmt;
1290     MSVCRT_size_t len;
1291
1292     TRACE("%p %ld %s %p %p %p\n", str, max, debugstr_w(format), mstm, time_data, loc);
1293
1294     len = MSVCRT__wcstombs_l( NULL, format, 0, loc ) + 1;
1295     if (!(fmt = MSVCRT_malloc( len ))) return 0;
1296     MSVCRT__wcstombs_l(fmt, format, len, loc);
1297
1298     if ((s = MSVCRT_malloc( max*4 )))
1299     {
1300         if (!strftime_helper( s, max*4, fmt, mstm, time_data, loc )) s[0] = 0;
1301         len = MSVCRT__mbstowcs_l( str, s, max, loc );
1302         MSVCRT_free( s );
1303     }
1304     else len = 0;
1305
1306     MSVCRT_free( fmt );
1307     return len;
1308 }
1309
1310 /*********************************************************************
1311  *              _wcsftime_l (MSVCRT.@)
1312  */
1313 MSVCRT_size_t CDECL MSVCRT__wcsftime_l( MSVCRT_wchar_t *str, MSVCRT_size_t max,
1314         const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm, MSVCRT__locale_t loc )
1315 {
1316     return wcsftime_helper(str, max, format, mstm, NULL, loc);
1317 }
1318
1319 /*********************************************************************
1320  *     wcsftime (MSVCRT.@)
1321  */
1322 MSVCRT_size_t CDECL MSVCRT_wcsftime( MSVCRT_wchar_t *str, MSVCRT_size_t max,
1323                                      const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm )
1324 {
1325     return wcsftime_helper(str, max, format, mstm, NULL, NULL);
1326 }
1327
1328 #if _MSVCR_VER >= 110
1329 /*********************************************************************
1330  *              _Wcsftime (MSVCR110.@)
1331  */
1332 MSVCRT_size_t CDECL _Wcsftime(MSVCRT_wchar_t *str, MSVCRT_size_t max,
1333         const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm,
1334         MSVCRT___lc_time_data *time_data)
1335 {
1336     return wcsftime_helper(str, max, format, mstm, time_data, NULL);
1337 }
1338 #endif
1339
1340 static char* asctime_buf(char *buf, const struct MSVCRT_tm *mstm)
1341 {
1342     static const char wday[7][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
1343     static const char month[12][4] = {"Jan", "Feb", "Mar", "Apr", "May",
1344         "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
1345
1346     if (!mstm || mstm->tm_sec<0 || mstm->tm_sec>59
1347             || mstm->tm_min<0 || mstm->tm_min>59
1348             || mstm->tm_hour<0 || mstm->tm_hour>23
1349             || mstm->tm_mon<0 || mstm->tm_mon>11
1350             || mstm->tm_wday<0 || mstm->tm_wday>6
1351             || mstm->tm_year<0 || mstm->tm_mday<0
1352             || mstm->tm_mday>MonthLengths[IsLeapYear(1900+mstm->tm_year)][mstm->tm_mon]) {
1353         *MSVCRT__errno() = MSVCRT_EINVAL;
1354         return NULL;
1355     }
1356
1357 #if _MSVCR_VER>=140
1358     /* C89 (4.12.3.1) uses space-padding for day of month. */
1359     MSVCRT__snprintf(buf, 26, "%s %s %2d %02d:%02d:%02d %c%03d\n", wday[mstm->tm_wday],
1360             month[mstm->tm_mon], mstm->tm_mday, mstm->tm_hour, mstm->tm_min,
1361             mstm->tm_sec, '1'+(mstm->tm_year+900)/1000, (900+mstm->tm_year)%1000);
1362 #else
1363     MSVCRT__snprintf(buf, 26, "%s %s %02d %02d:%02d:%02d %c%03d\n", wday[mstm->tm_wday],
1364             month[mstm->tm_mon], mstm->tm_mday, mstm->tm_hour, mstm->tm_min,
1365             mstm->tm_sec, '1'+(mstm->tm_year+900)/1000, (900+mstm->tm_year)%1000);
1366 #endif
1367     return buf;
1368 }
1369
1370 /*********************************************************************
1371  *              asctime (MSVCRT.@)
1372  */
1373 char * CDECL MSVCRT_asctime(const struct MSVCRT_tm *mstm)
1374 {
1375     thread_data_t *data = msvcrt_get_thread_data();
1376
1377     /* asctime returns date in format that always has exactly 26 characters */
1378     if (!data->asctime_buffer) {
1379         data->asctime_buffer = MSVCRT_malloc(26);
1380         if (!data->asctime_buffer) {
1381             *MSVCRT__errno() = MSVCRT_ENOMEM;
1382             return NULL;
1383         }
1384     }
1385
1386     return asctime_buf(data->asctime_buffer, mstm);
1387 }
1388
1389 /*********************************************************************
1390  *      asctime_s (MSVCRT.@)
1391  */
1392 int CDECL MSVCRT_asctime_s(char* time, MSVCRT_size_t size, const struct MSVCRT_tm *mstm)
1393 {
1394     if (!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
1395     if (size) time[0] = 0;
1396     if (!MSVCRT_CHECK_PMT(size >= 26)) return MSVCRT_EINVAL;
1397     if (!MSVCRT_CHECK_PMT(mstm != NULL)) return MSVCRT_EINVAL;
1398     if (!MSVCRT_CHECK_PMT(mstm->tm_sec >= 0 && mstm->tm_sec < 60)) return MSVCRT_EINVAL;
1399     if (!MSVCRT_CHECK_PMT(mstm->tm_min >= 0 && mstm->tm_min < 60)) return MSVCRT_EINVAL;
1400     if (!MSVCRT_CHECK_PMT(mstm->tm_hour >= 0 && mstm->tm_hour < 24)) return MSVCRT_EINVAL;
1401     if (!MSVCRT_CHECK_PMT(mstm->tm_mon >= 0 && mstm->tm_mon < 12)) return MSVCRT_EINVAL;
1402     if (!MSVCRT_CHECK_PMT(mstm->tm_wday >= 0 && mstm->tm_wday < 7)) return MSVCRT_EINVAL;
1403     if (!MSVCRT_CHECK_PMT(mstm->tm_year >= 0)) return MSVCRT_EINVAL;
1404     if (!MSVCRT_CHECK_PMT(mstm->tm_mday >= 0)) return MSVCRT_EINVAL;
1405     if (!MSVCRT_CHECK_PMT(mstm->tm_mday <= MonthLengths[IsLeapYear(1900+mstm->tm_year)][mstm->tm_mon])) return MSVCRT_EINVAL;
1406
1407     asctime_buf(time, mstm);
1408     return 0;
1409 }
1410
1411 /*********************************************************************
1412  *              _wasctime (MSVCRT.@)
1413  */
1414 MSVCRT_wchar_t * CDECL MSVCRT__wasctime(const struct MSVCRT_tm *mstm)
1415 {
1416     thread_data_t *data = msvcrt_get_thread_data();
1417     char buffer[26];
1418
1419     if(!data->wasctime_buffer) {
1420         data->wasctime_buffer = MSVCRT_malloc(26*sizeof(MSVCRT_wchar_t));
1421         if(!data->wasctime_buffer) {
1422             *MSVCRT__errno() = MSVCRT_ENOMEM;
1423             return NULL;
1424         }
1425     }
1426
1427     if(!asctime_buf(buffer, mstm))
1428         return NULL;
1429
1430     MultiByteToWideChar(CP_ACP, 0, buffer, -1, data->wasctime_buffer, 26);
1431     return data->wasctime_buffer;
1432 }
1433
1434 /*********************************************************************
1435  *      _wasctime_s (MSVCRT.@)
1436  */
1437 int CDECL MSVCRT__wasctime_s(MSVCRT_wchar_t* time, MSVCRT_size_t size, const struct MSVCRT_tm *mstm)
1438 {
1439     char buffer[26];
1440     int ret;
1441
1442     if (!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
1443     if (size) time[0] = 0;
1444     if (!MSVCRT_CHECK_PMT(size >= 26)) return MSVCRT_EINVAL;
1445     if (!MSVCRT_CHECK_PMT(mstm != NULL)) return MSVCRT_EINVAL;
1446
1447     ret = MSVCRT_asctime_s(buffer, sizeof(buffer), mstm);
1448     if(ret)
1449         return ret;
1450     MultiByteToWideChar(CP_ACP, 0, buffer, -1, time, size);
1451     return 0;
1452 }
1453
1454 /*********************************************************************
1455  *              _ctime64 (MSVCRT.@)
1456  */
1457 char * CDECL MSVCRT__ctime64(const MSVCRT___time64_t *time)
1458 {
1459     struct MSVCRT_tm *t;
1460     t = MSVCRT__localtime64( time );
1461     if (!t) return NULL;
1462     return MSVCRT_asctime( t );
1463 }
1464
1465 /*********************************************************************
1466  *              _ctime64_s (MSVCRT.@)
1467  */
1468 int CDECL MSVCRT__ctime64_s(char *res, MSVCRT_size_t len, const MSVCRT___time64_t *time)
1469 {
1470     struct MSVCRT_tm *t;
1471
1472     if (!MSVCRT_CHECK_PMT( res != NULL )) return MSVCRT_EINVAL;
1473     if (!MSVCRT_CHECK_PMT( len >= 26 )) return MSVCRT_EINVAL;
1474     res[0] = '\0';
1475     if (!MSVCRT_CHECK_PMT( time != NULL )) return MSVCRT_EINVAL;
1476     if (!MSVCRT_CHECK_PMT( *time > 0 )) return MSVCRT_EINVAL;
1477
1478     t = MSVCRT__localtime64( time );
1479     strcpy( res, MSVCRT_asctime( t ) );
1480     return 0;
1481 }
1482
1483 /*********************************************************************
1484  *              _ctime32 (MSVCRT.@)
1485  */
1486 char * CDECL MSVCRT__ctime32(const MSVCRT___time32_t *time)
1487 {
1488     struct MSVCRT_tm *t;
1489     t = MSVCRT__localtime32( time );
1490     if (!t) return NULL;
1491     return MSVCRT_asctime( t );
1492 }
1493
1494 /*********************************************************************
1495  *              _ctime32_s (MSVCRT.@)
1496  */
1497 int CDECL MSVCRT__ctime32_s(char *res, MSVCRT_size_t len, const MSVCRT___time32_t *time)
1498 {
1499     struct MSVCRT_tm *t;
1500
1501     if (!MSVCRT_CHECK_PMT( res != NULL )) return MSVCRT_EINVAL;
1502     if (!MSVCRT_CHECK_PMT( len >= 26 )) return MSVCRT_EINVAL;
1503     res[0] = '\0';
1504     if (!MSVCRT_CHECK_PMT( time != NULL )) return MSVCRT_EINVAL;
1505     if (!MSVCRT_CHECK_PMT( *time > 0 )) return MSVCRT_EINVAL;
1506
1507     t = MSVCRT__localtime32( time );
1508     strcpy( res, MSVCRT_asctime( t ) );
1509     return 0;
1510 }
1511
1512 /*********************************************************************
1513  *              ctime (MSVCRT.@)
1514  */
1515 #ifdef _WIN64
1516 char * CDECL MSVCRT_ctime(const MSVCRT___time64_t *time)
1517 {
1518     return MSVCRT__ctime64( time );
1519 }
1520 #else
1521 char * CDECL MSVCRT_ctime(const MSVCRT___time32_t *time)
1522 {
1523     return MSVCRT__ctime32( time );
1524 }
1525 #endif
1526
1527 /*********************************************************************
1528  *              _wctime64 (MSVCRT.@)
1529  */
1530 MSVCRT_wchar_t * CDECL MSVCRT__wctime64(const MSVCRT___time64_t *time)
1531 {
1532     return MSVCRT__wasctime( MSVCRT__localtime64(time) );
1533 }
1534
1535 /*********************************************************************
1536  *              _wctime32 (MSVCRT.@)
1537  */
1538 MSVCRT_wchar_t * CDECL MSVCRT__wctime32(const MSVCRT___time32_t *time)
1539 {
1540     return MSVCRT__wasctime( MSVCRT__localtime32(time) );
1541 }
1542
1543 /*********************************************************************
1544  *              _wctime (MSVCRT.@)
1545  */
1546 #ifdef _WIN64
1547 MSVCRT_wchar_t * CDECL MSVCRT__wctime(const MSVCRT___time64_t *time)
1548 {
1549     return MSVCRT__wctime64( time );
1550 }
1551 #else
1552 MSVCRT_wchar_t * CDECL MSVCRT__wctime(const MSVCRT___time32_t *time)
1553 {
1554     return MSVCRT__wctime32( time );
1555 }
1556 #endif
1557
1558 /*********************************************************************
1559  *              _wctime64_s (MSVCRT.@)
1560  */
1561 int CDECL MSVCRT__wctime64_s(MSVCRT_wchar_t *buf,
1562         MSVCRT_size_t size, const MSVCRT___time64_t *time)
1563 {
1564     struct MSVCRT_tm tm;
1565     int ret;
1566
1567     if(!MSVCRT_CHECK_PMT(buf != NULL)) return MSVCRT_EINVAL;
1568     if(!MSVCRT_CHECK_PMT(size != 0)) return MSVCRT_EINVAL;
1569     buf[0] = 0;
1570     if(!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
1571     if(!MSVCRT_CHECK_PMT(*time >= 0)) return MSVCRT_EINVAL;
1572     if(!MSVCRT_CHECK_PMT(*time <= _MAX__TIME64_T)) return MSVCRT_EINVAL;
1573
1574     ret = _localtime64_s(&tm, time);
1575     if(ret != 0)
1576         return ret;
1577
1578     return MSVCRT__wasctime_s(buf, size, &tm);
1579 }
1580
1581 /*********************************************************************
1582  *              _wctime32_s (MSVCRT.@)
1583  */
1584 int CDECL MSVCRT__wctime32_s(MSVCRT_wchar_t *buf, MSVCRT_size_t size,
1585         const MSVCRT___time32_t *time)
1586 {
1587     struct MSVCRT_tm tm;
1588     int ret;
1589
1590     if(!MSVCRT_CHECK_PMT(buf != NULL)) return MSVCRT_EINVAL;
1591     if(!MSVCRT_CHECK_PMT(size != 0)) return MSVCRT_EINVAL;
1592     buf[0] = 0;
1593     if(!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
1594     if(!MSVCRT_CHECK_PMT(*time >= 0)) return MSVCRT_EINVAL;
1595
1596     ret = _localtime32_s(&tm, time);
1597     if(ret != 0)
1598         return ret;
1599
1600     return MSVCRT__wasctime_s(buf, size, &tm);
1601 }
1602
1603 #if _MSVCR_VER >= 80
1604
1605 /*********************************************************************
1606  * _get_timezone (MSVCR80.@)
1607  */
1608 int CDECL _get_timezone(LONG *timezone)
1609 {
1610     if(!MSVCRT_CHECK_PMT(timezone != NULL)) return MSVCRT_EINVAL;
1611
1612     *timezone = MSVCRT___timezone;
1613     return 0;
1614 }
1615
1616 /*********************************************************************
1617  * _get_daylight (MSVCR80.@)
1618  */
1619 int CDECL _get_daylight(int *hours)
1620 {
1621     if(!MSVCRT_CHECK_PMT(hours != NULL)) return MSVCRT_EINVAL;
1622
1623     *hours = MSVCRT___daylight;
1624     return 0;
1625 }
1626
1627 #endif /* _MSVCR_VER >= 80 */
1628
1629 #if _MSVCR_VER >= 140
1630
1631 #define TIME_UTC 1
1632
1633 struct _timespec32
1634 {
1635     MSVCRT___time32_t tv_sec;
1636     LONG tv_nsec;
1637 };
1638
1639 struct _timespec64
1640 {
1641     MSVCRT___time64_t tv_sec;
1642     LONG tv_nsec;
1643 };
1644
1645 /*********************************************************************
1646  * _timespec64_get (UCRTBASE.@)
1647  */
1648 int CDECL _timespec64_get(struct _timespec64 *ts, int base)
1649 {
1650     ULONGLONG time;
1651     FILETIME ft;
1652
1653     if(!MSVCRT_CHECK_PMT(ts != NULL)) return 0;
1654     if(base != TIME_UTC) return 0;
1655
1656     GetSystemTimePreciseAsFileTime(&ft);
1657     time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
1658
1659     ts->tv_sec = time / TICKSPERSEC - SECS_1601_TO_1970;
1660     ts->tv_nsec = time % TICKSPERSEC * 100;
1661     return base;
1662 }
1663
1664 /*********************************************************************
1665  * _timespec32_get (UCRTBASE.@)
1666  */
1667 int CDECL _timespec32_get(struct _timespec32 *ts, int base)
1668 {
1669     struct _timespec64 ts64;
1670
1671     if(_timespec64_get(&ts64, base) != base)
1672         return 0;
1673     if(ts64.tv_sec != (MSVCRT___time32_t)ts64.tv_sec)
1674         return 0;
1675
1676     ts->tv_sec = ts64.tv_sec;
1677     ts->tv_nsec = ts64.tv_nsec;
1678     return base;
1679 }
1680 #endif /* _MSVCR_VER >= 140 */