4 * RtlTimeToTimeFields, RtlTimeFieldsToTime and defines are taken from ReactOS and
5 * adapted to wine with special permissions of the author. This code is
6 * Copyright 2002 Rex Jolliff (rex@lvcablemodem.com)
8 * Copyright 1999 Juergen Schmied
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include "wine/port.h"
33 #ifdef HAVE_SYS_TIME_H
34 # include <sys/time.h>
40 #define NONAMELESSUNION
41 #define NONAMELESSSTRUCT
46 #include "wine/unicode.h"
47 #include "wine/debug.h"
48 #include "ntdll_misc.h"
50 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
52 static CRITICAL_SECTION TIME_GetBias_section;
53 static CRITICAL_SECTION_DEBUG critsect_debug =
55 0, 0, &TIME_GetBias_section,
56 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
57 0, 0, { 0, (DWORD)(__FILE__ ": TIME_GetBias_section") }
59 static CRITICAL_SECTION TIME_GetBias_section = { &critsect_debug, -1, 0, 0, 0, 0 };
61 /* TimeZone registry key values */
62 static const WCHAR TZInformationKeyW[] = { 'M','a','c','h','i','n','e','\\',
63 'S','Y','S','T','E','M','\\','C','u','r','r','e','n','t','C','o','n','t','r',
64 'o','l','S','e','t','\\','C','o','n','t','r','o','l','\\','T','i','m','e','z',
65 'o','n','e','I','n','f','o','r','m','a','t','i','o','n', 0};
66 static const WCHAR TZStandardStartW[] = {
67 'S','t','a','n','d','a','r','d','s','t','a','r','t', 0};
68 static const WCHAR TZDaylightStartW[] = {
69 'D','a','y','l','i','g','h','t','s','t','a','r','t', 0};
70 static const WCHAR TZDaylightBiasW[] = {
71 'D','a','y','l','i','g','h','t','B','i','a','s', 0};
72 static const WCHAR TZStandardBiasW[] = {
73 'S','t','a','n','d','a','r','d','B','i','a','s', 0};
74 static const WCHAR TZBiasW[] = {'B','i','a','s', 0};
75 static const WCHAR TZDaylightNameW[] = {
76 'D','a','y','l','i','g','h','t','N','a','m','e', 0};
77 static const WCHAR TZStandardNameW[] = {
78 'S','t','a','n','d','a','r','d','N','a','m','e', 0};
81 #define SETTIME_MAX_ADJUST 120
83 /* This structure is used to store strings that represent all of the time zones
84 * in the world. (This is used to help GetTimeZoneInformation)
88 const char *psTZFromUnix;
89 WCHAR psTZWindows[32];
94 static const struct tagTZ_INFO TZ_INFO[] =
97 {'D','a','t','e','l','i','n','e',' ','S','t','a','n','d','a','r','d',' ',
98 'T','i','m','e','\0'}, -720, 0},
100 {'S','a','m','o','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
103 {'H','a','w','a','i','i','a','n',' ','S','t','a','n','d','a','r','d',' ',
104 'T','i','m','e','\0'}, 600, 0},
106 {'A','l','a','s','k','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
107 'i','m','e','\0'}, 480, 1},
109 {'P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r','d',' ','T',
110 'i','m','e','\0'}, 480, 0},
112 {'P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r','d',' ','T',
113 'i','m','e','\0'}, 420, 1},
115 {'U','S',' ','M','o','u','n','t','a','i','n',' ','S','t','a','n','d','a',
116 'r','d',' ','T','i','m','e','\0'}, 420, 0},
118 {'M','o','u','n','t','a','i','n',' ','S','t','a','n','d','a','r','d',' ',
119 'T','i','m','e','\0'}, 360, 1},
121 {'C','e','n','t','r','a','l',' ','A','m','e','r','i','c','a',' ','S','t',
122 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, 360, 0},
124 {'C','e','n','t','r','a','l',' ','S','t','a','n','d','a','r','d',' ','T',
125 'i','m','e','\0'}, 300, 1},
127 {'S','A',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r',
128 'd',' ','T','i','m','e','\0'}, 300, 0},
130 {'E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r','d',' ','T',
131 'i','m','e','\0'}, 240, 1},
133 {'U','S',' ','E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r',
134 'd',' ','T','i','m','e','\0'}, 300, 0},
136 {'E','a','s','t','e','r','n',' ','C','e','n','t','r','a','l',' ','S','t','a','n','d','a','r',
137 'd',' ','T','i','m','e','\0'}, 300, 0},
139 {'A','t','l','a','n','t','i','c',' ','S','t','a','n','d','a','r','d',' ',
140 'T','i','m','e','\0'}, 180, 1},
142 {'S','A',' ','W','e','s','t','e','r','n',' ','S','t','a','n','d','a','r',
143 'd',' ','T','i','m','e','\0'}, 240, 0},
145 {'P','a','c','i','f','i','c',' ','S','A',' ','S','t','a','n','d','a','r',
146 'd',' ','T','i','m','e','\0'}, 240, 0},
148 {'N','e','w','f','o','u','n','d','l','a','n','d',' ','S','t','a','n','d',
149 'a','r','d',' ','T','i','m','e','\0'}, 150, 1},
151 {'B','r','a','z','i','l','i','a','n',' ','S','t','a','n','d','a','r','d',
152 ' ','T','i','m','e','\0'}, 180, 0},
154 {'B','r','a','z','i','l','i','a','n',' ','S','u','m','m','e','r',
155 ' ','T','i','m','e','\0'}, 120, 1},
157 {'S','A',' ','E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r',
158 'd',' ','T','i','m','e','\0'}, 180, 0},
160 {'G','r','e','e','n','l','a','n','d',' ','S','t','a','n','d','a','r','d',
161 ' ','T','i','m','e','\0'}, 120, 1},
163 {'M','i','d','-','A','t','l','a','n','t','i','c',' ','S','t','a','n','d',
164 'a','r','d',' ','T','i','m','e','\0'}, 120, 0},
166 {'A','z','o','r','e','s',' ','S','t','a','n','d','a','r','d',' ','T','i',
167 'm','e','\0'}, 0, 1},
169 {'C','a','p','e',' ','V','e','r','d','e',' ','S','t','a','n','d','a','r',
170 'd',' ','T','i','m','e','\0'}, 60, 0},
172 {'G','r','e','e','n','w','i','c','h',' ','S','t','a','n','d','a','r','d',
173 ' ','T','i','m','e','\0'}, 0, 0},
175 {'G','M','T',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'},
178 {'G','M','T',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'},
181 {'G','M','T',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'},
184 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e','a','n',' ',
185 'T','i','m','e','\0'}, -60, 0},
187 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e',' ','S','t','a',
188 'n','d','a','r','d',' ','T','i','m','e','\0'}, -120, 1},
190 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e',' ','S','t','a',
191 'n','d','a','r','d',' ','T','i','m','e','\0'}, -60, 0},
193 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e',' ','D','a','y',
194 'l','i','g','h','t',' ','T','i','m','e','\0'}, -120, 1},
196 {'W','.',' ','C','e','n','t','r','a','l',' ','A','f','r','i','c','a',' ',
197 'S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'}, -60, 0},
199 {'E','.',' ','E','u','r','o','p','e',' ','S','t','a','n','d','a','r','d',
200 ' ','T','i','m','e','\0'}, -180, 1},
202 {'E','g','y','p','t',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
205 {'C','e','n','t','r','a','l',' ','A','f','r','i','c','a','n',' '
206 ,'T','i','m','e','\0'}, -120, 0},
208 {'S','o','u','t','h',' ','A','f','r','i','c','a',' ','S','t','a','n','d',
209 'a','r','d',' ','T','i','m','e','\0'}, -120, 0},
211 {'I','s','r','a','e','l',' ','S','t','a','n','d','a','r','d',' ','T','i',
212 'm','e','\0'}, -120, 0},
214 {'R','u','s','s','i','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
215 'i','m','e','\0'}, -180, 0},
217 {'A','r','a','b','i','c',' ','S','t','a','n','d','a','r','d',' ','T','i',
218 'm','e','\0'}, -240, 1},
220 {'A','r','a','b',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
223 {'R','u','s','s','i','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
224 'i','m','e','\0'}, -240, 1},
226 {'E','.',' ','A','f','r','i','c','a',' ','S','t','a','n','d','a','r','d',
227 ' ','T','i','m','e','\0'}, -180, 0},
229 {'I','r','a','n',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
232 {'A','r','a','b','i','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
233 'i','m','e','\0'}, -240, 0},
235 {'C','a','u','c','a','s','u','s',' ','S','t','a','n','d','a','r','d',' ',
236 'T','i','m','e','\0'}, -300, 1},
238 {'A','f','g','h','a','n','i','s','t','a','n',' ','S','t','a','n','d','a',
239 'r','d',' ','T','i','m','e','\0'}, -270, 0},
241 {'S','a','m','a','r','a',' ','S','t','a','n','d','a','r','d',' ','T','i',
242 'm','e','\0'}, -270, 1},
244 {'E','k','a','t','e','r','i','n','b','u','r','g',' ','S','t','a','n','d',
245 'a','r','d',' ','T','i','m','e','\0'}, -360, 1},
247 {'W','e','s','t',' ','A','s','i','a',' ','S','t','a','n','d','a','r','d',
248 ' ','T','i','m','e','\0'}, -300, 0},
250 {'I','n','d','i','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
253 {'N','e','p','a','l',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
256 {'N','.',' ','C','e','n','t','r','a','l',' ','A','s','i','a',' ','S','t',
257 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -420, 1},
259 {'C','e','n','t','r','a','l',' ','A','s','i','a',' ','S','t','a','n','d',
260 'a','r','d',' ','T','i','m','e','\0'}, -360, 0},
262 {'S','r','i',' ','L','a','n','k','a',' ','S','t','a','n','d','a','r','d',
263 ' ','T','i','m','e','\0'}, -360, 0},
265 {'M','y','a','n','m','a','r',' ','S','t','a','n','d','a','r','d',' ','T',
266 'i','m','e','\0'}, -390, 0},
268 {'S','E',' ','A','s','i','a',' ','S','t','a','n','d','a','r','d',' ','T',
269 'i','m','e','\0'}, -420, 0},
271 {'N','o','r','t','h',' ','A','s','i','a',' ','S','t','a','n','d','a','r',
272 'd',' ','T','i','m','e','\0'}, -480, 1},
274 {'C','h','i','n','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
277 {'N','o','r','t','h',' ','A','s','i','a',' ','E','a','s','t',' ','S','t',
278 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -540, 1},
280 {'M','a','l','a','y',' ','P','e','n','i','n','s','u','l','a',' ','S','t',
281 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -480, 0},
283 {'W','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d',
284 'a','r','d',' ','T','i','m','e','\0'}, -480, 0},
286 {'T','o','k','y','o',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
289 {'K','o','r','e','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
292 {'Y','a','k','u','t','s','k',' ','S','t','a','n','d','a','r','d',' ','T',
293 'i','m','e','\0'}, -600, 1},
295 {'C','e','n','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a',
296 'n','d','a','r','d',' ','T','i','m','e','\0'}, -570, 0},
298 {'E','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d',
299 'a','r','d',' ','T','i','m','e','\0'}, -600, 0},
301 {'E','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d',
302 'a','r','d',' ','T','i','m','e','\0'}, -660, 1},
304 {'W','e','s','t',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d',
305 'a','r','d',' ','T','i','m','e','\0'}, -600, 0},
307 {'V','l','a','d','i','v','o','s','t','o','k',' ','S','t','a','n','d','a',
308 'r','d',' ','T','i','m','e','\0'}, -660, 1},
310 {'C','e','n','t','r','a','l',' ','P','a','c','i','f','i','c',' ','S','t',
311 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -720, 1},
313 {'N','e','w',' ','Z','e','a','l','a','n','d',' ','S','t','a','n','d','a',
314 'r','d',' ','T','i','m','e','\0'}, -720, 0},
316 {'N','e','w',' ','Z','e','a','l','a','n','d',' ','D','a','y','l','i','g',
317 'h','t',' ','T','i','m','e','\0'}, -780, 1},
319 {'F','i','j','i',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
322 {'T','o','n','g','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
325 {'N','o','v','o','s','i','b','i','r','s','k',' ','S','t','a','n','d','a',
326 'r','d',' ','T','i','m','e','\0'}, -360, 1}
329 #define TICKSPERSEC 10000000
330 #define TICKSPERMSEC 10000
331 #define SECSPERDAY 86400
332 #define SECSPERHOUR 3600
333 #define SECSPERMIN 60
334 #define MINSPERHOUR 60
335 #define HOURSPERDAY 24
336 #define EPOCHWEEKDAY 1 /* Jan 1, 1601 was Monday */
337 #define DAYSPERWEEK 7
338 #define EPOCHYEAR 1601
339 #define DAYSPERNORMALYEAR 365
340 #define DAYSPERLEAPYEAR 366
341 #define MONSPERYEAR 12
342 #define DAYSPERQUADRICENTENNIUM (365 * 400 + 97)
343 #define DAYSPERNORMALCENTURY (365 * 100 + 24)
344 #define DAYSPERNORMALQUADRENNIUM (365 * 4 + 1)
346 /* 1601 to 1970 is 369 years plus 89 leap days */
347 #define SECS_1601_TO_1970 ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
348 #define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)
349 /* 1601 to 1980 is 379 years plus 91 leap days */
350 #define SECS_1601_TO_1980 ((379 * 365 + 91) * (ULONGLONG)SECSPERDAY)
351 #define TICKS_1601_TO_1980 (SECS_1601_TO_1980 * TICKSPERSEC)
352 /* max ticks that can be represented as Unix time */
353 #define TICKS_1601_TO_UNIX_MAX ((SECS_1601_TO_1970 + INT_MAX) * TICKSPERSEC)
356 static const int MonthLengths[2][MONSPERYEAR] =
358 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
359 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
362 static inline int IsLeapYear(int Year)
364 return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0) ? 1 : 0;
367 /***********************************************************************
368 * NTDLL_get_server_timeout
370 * Convert a NTDLL timeout into a timeval struct to send to the server.
372 void NTDLL_get_server_timeout( abs_time_t *when, const LARGE_INTEGER *timeout )
376 if (!timeout) /* infinite timeout */
378 when->sec = when->usec = 0;
380 else if (timeout->QuadPart <= 0) /* relative timeout */
384 if (-timeout->QuadPart > (LONGLONG)INT_MAX * TICKSPERSEC)
385 when->sec = when->usec = INT_MAX;
388 ULONG sec = RtlEnlargedUnsignedDivide( -timeout->QuadPart, TICKSPERSEC, &remainder );
389 gettimeofday( &tv, 0 );
390 when->sec = tv.tv_sec + sec;
391 if ((when->usec = tv.tv_usec + (remainder / 10)) >= 1000000)
393 when->usec -= 1000000;
396 if (when->sec < tv.tv_sec) /* overflow */
397 when->sec = when->usec = INT_MAX;
400 else /* absolute time */
402 if (timeout->QuadPart < TICKS_1601_TO_1970)
403 when->sec = when->usec = 0;
404 else if (timeout->QuadPart > TICKS_1601_TO_UNIX_MAX)
405 when->sec = when->usec = INT_MAX;
408 when->sec = RtlEnlargedUnsignedDivide( timeout->QuadPart - TICKS_1601_TO_1970,
409 TICKSPERSEC, &remainder );
410 when->usec = remainder / 10;
416 /***********************************************************************
417 * NTDLL_from_server_timeout
419 * Convert a timeval struct from the server into an NTDLL timeout.
421 void NTDLL_from_server_timeout( LARGE_INTEGER *timeout, const abs_time_t *when )
423 timeout->QuadPart = when->sec * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
424 timeout->QuadPart += when->usec * 10;
428 /******************************************************************************
429 * RtlTimeToTimeFields [NTDLL.@]
431 * Convert a time into a TIME_FIELDS structure.
434 * liTime [I] Time to convert.
435 * TimeFields [O] Destination for the converted time.
440 VOID WINAPI RtlTimeToTimeFields(
441 const LARGE_INTEGER *liTime,
442 PTIME_FIELDS TimeFields)
445 long int cleaps, years, yearday, months;
449 /* Extract millisecond from time and convert time into seconds */
450 TimeFields->Milliseconds =
451 (CSHORT) (( liTime->QuadPart % TICKSPERSEC) / TICKSPERMSEC);
452 Time = liTime->QuadPart / TICKSPERSEC;
454 /* The native version of RtlTimeToTimeFields does not take leap seconds
457 /* Split the time into days and seconds within the day */
458 Days = Time / SECSPERDAY;
459 SecondsInDay = Time % SECSPERDAY;
461 /* compute time of day */
462 TimeFields->Hour = (CSHORT) (SecondsInDay / SECSPERHOUR);
463 SecondsInDay = SecondsInDay % SECSPERHOUR;
464 TimeFields->Minute = (CSHORT) (SecondsInDay / SECSPERMIN);
465 TimeFields->Second = (CSHORT) (SecondsInDay % SECSPERMIN);
467 /* compute day of week */
468 TimeFields->Weekday = (CSHORT) ((EPOCHWEEKDAY + Days) % DAYSPERWEEK);
470 /* compute year, month and day of month. */
471 cleaps=( 3 * ((4 * Days + 1227) / DAYSPERQUADRICENTENNIUM) + 3 ) / 4;
472 Days += 28188 + cleaps;
473 years = (20 * Days - 2442) / (5 * DAYSPERNORMALQUADRENNIUM);
474 yearday = Days - (years * DAYSPERNORMALQUADRENNIUM)/4;
475 months = (64 * yearday) / 1959;
476 /* the result is based on a year starting on March.
477 * To convert take 12 from Januari and Februari and
478 * increase the year by one. */
480 TimeFields->Month = months - 1;
481 TimeFields->Year = years + 1524;
483 TimeFields->Month = months - 13;
484 TimeFields->Year = years + 1525;
486 /* calculation of day of month is based on the wonderful
487 * sequence of INT( n * 30.6): it reproduces the
488 * 31-30-31-30-31-31 month lengths exactly for small n's */
489 TimeFields->Day = yearday - (1959 * months) / 64 ;
493 /******************************************************************************
494 * RtlTimeFieldsToTime [NTDLL.@]
496 * Convert a TIME_FIELDS structure into a time.
499 * ftTimeFields [I] TIME_FIELDS structure to convert.
500 * Time [O] Destination for the converted time.
506 BOOLEAN WINAPI RtlTimeFieldsToTime(
507 PTIME_FIELDS tfTimeFields,
510 int month, year, cleaps, day;
512 /* FIXME: normalize the TIME_FIELDS structure here */
513 /* No, native just returns 0 (error) if the fields are not */
514 if( tfTimeFields->Milliseconds< 0 || tfTimeFields->Milliseconds > 999 ||
515 tfTimeFields->Second < 0 || tfTimeFields->Second > 59 ||
516 tfTimeFields->Minute < 0 || tfTimeFields->Minute > 59 ||
517 tfTimeFields->Hour < 0 || tfTimeFields->Hour > 23 ||
518 tfTimeFields->Month < 1 || tfTimeFields->Month > 12 ||
519 tfTimeFields->Day < 1 ||
520 tfTimeFields->Day > MonthLengths
521 [ tfTimeFields->Month ==2 || IsLeapYear(tfTimeFields->Year)]
522 [ tfTimeFields->Month - 1] ||
523 tfTimeFields->Year < 1601 )
526 /* now calculate a day count from the date
527 * First start counting years from March. This way the leap days
528 * are added at the end of the year, not somewhere in the middle.
529 * Formula's become so much less complicate that way.
530 * To convert: add 12 to the month numbers of Jan and Feb, and
531 * take 1 from the year */
532 if(tfTimeFields->Month < 3) {
533 month = tfTimeFields->Month + 13;
534 year = tfTimeFields->Year - 1;
536 month = tfTimeFields->Month + 1;
537 year = tfTimeFields->Year;
539 cleaps = (3 * (year / 100) + 3) / 4; /* nr of "century leap years"*/
540 day = (36525 * year) / 100 - cleaps + /* year * dayperyr, corrected */
541 (1959 * month) / 64 + /* months * daypermonth */
542 tfTimeFields->Day - /* day of the month */
543 584817 ; /* zero that on 1601-01-01 */
546 Time->QuadPart = (((((LONGLONG) day * HOURSPERDAY +
547 tfTimeFields->Hour) * MINSPERHOUR +
548 tfTimeFields->Minute) * SECSPERMIN +
549 tfTimeFields->Second ) * 1000 +
550 tfTimeFields->Milliseconds ) * TICKSPERMSEC;
555 /***********************************************************************
556 * TIME_GetBias [internal]
558 * Helper function calculates delta local time from UTC.
561 * utc [I] The current utc time.
562 * pdaylight [I] Local daylight.
565 * The bias for the current timezone.
567 static int TIME_GetBias(time_t utc, int *pdaylight)
570 static time_t last_utc;
571 static int last_bias;
572 static int last_daylight;
575 RtlEnterCriticalSection( &TIME_GetBias_section );
578 *pdaylight = last_daylight;
582 ptm = localtime(&utc);
583 *pdaylight = last_daylight =
584 ptm->tm_isdst; /* daylight for local timezone */
586 ptm->tm_isdst = *pdaylight; /* use local daylight, not that of Greenwich */
588 ret = last_bias = (int)(utc-mktime(ptm));
590 RtlLeaveCriticalSection( &TIME_GetBias_section );
594 /******************************************************************************
595 * RtlLocalTimeToSystemTime [NTDLL.@]
597 * Convert a local time into system time.
600 * LocalTime [I] Local time to convert.
601 * SystemTime [O] Destination for the converted time.
604 * Success: STATUS_SUCCESS.
605 * Failure: An NTSTATUS error code indicating the problem.
607 NTSTATUS WINAPI RtlLocalTimeToSystemTime( const LARGE_INTEGER *LocalTime,
608 PLARGE_INTEGER SystemTime)
613 TRACE("(%p, %p)\n", LocalTime, SystemTime);
616 bias = TIME_GetBias(gmt, &daylight);
618 SystemTime->QuadPart = LocalTime->QuadPart - bias * (LONGLONG)TICKSPERSEC;
619 return STATUS_SUCCESS;
622 /******************************************************************************
623 * RtlSystemTimeToLocalTime [NTDLL.@]
625 * Convert a system time into a local time.
628 * SystemTime [I] System time to convert.
629 * LocalTime [O] Destination for the converted time.
632 * Success: STATUS_SUCCESS.
633 * Failure: An NTSTATUS error code indicating the problem.
635 NTSTATUS WINAPI RtlSystemTimeToLocalTime( const LARGE_INTEGER *SystemTime,
636 PLARGE_INTEGER LocalTime )
641 TRACE("(%p, %p)\n", SystemTime, LocalTime);
644 bias = TIME_GetBias(gmt, &daylight);
646 LocalTime->QuadPart = SystemTime->QuadPart + bias * (LONGLONG)TICKSPERSEC;
647 return STATUS_SUCCESS;
650 /******************************************************************************
651 * RtlTimeToSecondsSince1970 [NTDLL.@]
653 * Convert a time into a count of seconds since 1970.
656 * Time [I] Time to convert.
657 * Seconds [O] Destination for the converted time.
661 * Failure: FALSE, if the resulting value will not fit in a DWORD.
663 BOOLEAN WINAPI RtlTimeToSecondsSince1970( const LARGE_INTEGER *Time, LPDWORD Seconds )
665 ULONGLONG tmp = ((ULONGLONG)Time->u.HighPart << 32) | Time->u.LowPart;
666 tmp = RtlLargeIntegerDivide( tmp, TICKSPERSEC, NULL );
667 tmp -= SECS_1601_TO_1970;
668 if (tmp > 0xffffffff) return FALSE;
669 *Seconds = (DWORD)tmp;
673 /******************************************************************************
674 * RtlTimeToSecondsSince1980 [NTDLL.@]
676 * Convert a time into a count of seconds since 1980.
679 * Time [I] Time to convert.
680 * Seconds [O] Destination for the converted time.
684 * Failure: FALSE, if the resulting value will not fit in a DWORD.
686 BOOLEAN WINAPI RtlTimeToSecondsSince1980( const LARGE_INTEGER *Time, LPDWORD Seconds )
688 ULONGLONG tmp = ((ULONGLONG)Time->u.HighPart << 32) | Time->u.LowPart;
689 tmp = RtlLargeIntegerDivide( tmp, TICKSPERSEC, NULL );
690 tmp -= SECS_1601_TO_1980;
691 if (tmp > 0xffffffff) return FALSE;
692 *Seconds = (DWORD)tmp;
696 /******************************************************************************
697 * RtlSecondsSince1970ToTime [NTDLL.@]
699 * Convert a count of seconds since 1970 to a time.
702 * Seconds [I] Time to convert.
703 * Time [O] Destination for the converted time.
708 void WINAPI RtlSecondsSince1970ToTime( DWORD Seconds, LARGE_INTEGER *Time )
710 ULONGLONG secs = Seconds * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
711 Time->u.LowPart = (DWORD)secs;
712 Time->u.HighPart = (DWORD)(secs >> 32);
715 /******************************************************************************
716 * RtlSecondsSince1980ToTime [NTDLL.@]
718 * Convert a count of seconds since 1980 to a time.
721 * Seconds [I] Time to convert.
722 * Time [O] Destination for the converted time.
727 void WINAPI RtlSecondsSince1980ToTime( DWORD Seconds, LARGE_INTEGER *Time )
729 ULONGLONG secs = Seconds * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1980;
730 Time->u.LowPart = (DWORD)secs;
731 Time->u.HighPart = (DWORD)(secs >> 32);
734 /******************************************************************************
735 * RtlTimeToElapsedTimeFields [NTDLL.@]
737 * Convert a time to a count of elapsed seconds.
740 * Time [I] Time to convert.
741 * TimeFields [O] Destination for the converted time.
746 void WINAPI RtlTimeToElapsedTimeFields( const LARGE_INTEGER *Time, PTIME_FIELDS TimeFields )
751 time = RtlExtendedLargeIntegerDivide( Time->QuadPart, TICKSPERSEC, &rem );
752 TimeFields->Milliseconds = rem / TICKSPERMSEC;
754 /* time is now in seconds */
755 TimeFields->Year = 0;
756 TimeFields->Month = 0;
757 TimeFields->Day = RtlExtendedLargeIntegerDivide( time, SECSPERDAY, &rem );
759 /* rem is now the remaining seconds in the last day */
760 TimeFields->Second = rem % 60;
762 TimeFields->Minute = rem % 60;
763 TimeFields->Hour = rem / 60;
766 /***********************************************************************
767 * NtQuerySystemTime [NTDLL.@]
768 * ZwQuerySystemTime [NTDLL.@]
770 * Get the current system time.
773 * Time [O] Destination for the current system time.
776 * Success: STATUS_SUCCESS.
777 * Failure: An NTSTATUS error code indicating the problem.
779 NTSTATUS WINAPI NtQuerySystemTime( PLARGE_INTEGER Time )
783 gettimeofday( &now, 0 );
784 Time->QuadPart = now.tv_sec * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
785 Time->QuadPart += now.tv_usec * 10;
786 return STATUS_SUCCESS;
789 /***********************************************************************
790 * TIME_GetTZAsStr [internal]
792 * Helper function that returns the given timezone as a string.
795 * utc [I] The current utc time.
796 * bias [I] The bias of the current timezone.
803 * This could be done with a hash table instead of merely iterating through a
804 * table, however with the small amount of entries (60 or so) I didn't think
807 static const WCHAR* TIME_GetTZAsStr (time_t utc, int bias, int dst)
810 struct tm *ptm = localtime(&utc);
813 if (!strftime (psTZName, 7, "%Z", ptm))
816 for (i=0; i<(sizeof(TZ_INFO) / sizeof(struct tagTZ_INFO)); i++)
818 if ( strcmp(TZ_INFO[i].psTZFromUnix, psTZName) == 0 &&
819 TZ_INFO[i].bias == bias &&
820 TZ_INFO[i].dst == dst
822 return TZ_INFO[i].psTZWindows;
824 FIXME("Can't match system time zone name \"%s\", bias=%d and dst=%d "
825 "to an entry in TZ_INFO. Please add appropriate entry to "
826 "TZ_INFO and submit as patch to wine-patches\n",psTZName,bias,dst);
830 /*** TIME_GetTimeZoneInfoFromReg: helper for GetTimeZoneInformation ***/
833 static int TIME_GetTimeZoneInfoFromReg(LPTIME_ZONE_INFORMATION tzinfo)
836 KEY_VALUE_PARTIAL_INFORMATION * KpInfo =
837 (KEY_VALUE_PARTIAL_INFORMATION *) buf;
840 OBJECT_ATTRIBUTES attr;
841 UNICODE_STRING nameW;
843 attr.Length = sizeof(attr);
844 attr.RootDirectory = 0;
845 attr.ObjectName = &nameW;
847 attr.SecurityDescriptor = NULL;
848 attr.SecurityQualityOfService = NULL;
849 RtlInitUnicodeString( &nameW, TZInformationKeyW);
850 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr )) {
852 #define GTZIFR_N( valkey, tofield) \
853 RtlInitUnicodeString( &nameW, valkey );\
854 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, KpInfo,\
855 sizeof(buf), &size )) { \
856 if( size >= (sizeof((tofield)) + \
857 offsetof(KEY_VALUE_PARTIAL_INFORMATION,Data))); { \
859 KpInfo->Data, sizeof(tofield)); \
862 #define GTZIFR_S( valkey, tofield) \
863 RtlInitUnicodeString( &nameW, valkey );\
864 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, KpInfo,\
865 sizeof(buf), &size )) { \
866 strncpyW( tofield, (WCHAR*) KpInfo->Data, \
867 sizeof( tofield) / sizeof(WCHAR) ); \
870 GTZIFR_N( TZStandardStartW, tzinfo->StandardDate)
871 GTZIFR_N( TZDaylightStartW, tzinfo->DaylightDate)
872 GTZIFR_N( TZBiasW, tzinfo->Bias)
873 GTZIFR_N( TZStandardBiasW, tzinfo->StandardBias)
874 GTZIFR_N( TZDaylightBiasW, tzinfo->DaylightBias)
875 GTZIFR_S( TZStandardNameW, tzinfo->StandardName)
876 GTZIFR_S( TZDaylightNameW, tzinfo->DaylightName)
886 /***********************************************************************
887 * RtlQueryTimeZoneInformation [NTDLL.@]
889 * Get information about the current timezone.
892 * tzinfo [O] Destination for the retrieved timezone info.
895 * Success: STATUS_SUCCESS.
896 * Failure: An NTSTATUS error code indicating the problem.
898 NTSTATUS WINAPI RtlQueryTimeZoneInformation(LPTIME_ZONE_INFORMATION tzinfo)
904 memset(tzinfo, 0, sizeof(TIME_ZONE_INFORMATION));
906 if( !TIME_GetTimeZoneInfoFromReg(tzinfo)) {
909 bias = TIME_GetBias(gmt, &daylight);
911 tzinfo->Bias = -bias / 60;
912 tzinfo->StandardBias = 0;
913 tzinfo->DaylightBias = -60;
914 tzinfo->StandardName[0]='\0';
915 tzinfo->DaylightName[0]='\0';
916 psTZ = TIME_GetTZAsStr (gmt, (-bias/60), daylight);
917 if (psTZ) strcpyW( tzinfo->StandardName, psTZ );
919 return STATUS_SUCCESS;
922 /***********************************************************************
923 * RtlSetTimeZoneInformation [NTDLL.@]
925 * Set the current time zone information.
928 * tzinfo [I] Timezone information to set.
931 * Success: STATUS_SUCCESS.
932 * Failure: An NTSTATUS error code indicating the problem.
935 * Uses the obsolete unix timezone structure and tz_dsttime member.
937 NTSTATUS WINAPI RtlSetTimeZoneInformation( const TIME_ZONE_INFORMATION *tzinfo )
939 #ifdef HAVE_SETTIMEOFDAY
942 tz.tz_minuteswest = tzinfo->Bias;
944 tz.tz_dsttime = DST_NONE;
948 if(!settimeofday(NULL, &tz))
949 return STATUS_SUCCESS;
951 return STATUS_PRIVILEGE_NOT_HELD;
954 /***********************************************************************
955 * NtSetSystemTime [NTDLL.@]
956 * ZwSetSystemTime [NTDLL.@]
958 * Set the system time.
961 * NewTime [I] The time to set.
962 * OldTime [O] Optional destination for the previous system time.
965 * Success: STATUS_SUCCESS.
966 * Failure: An NTSTATUS error code indicating the problem.
968 NTSTATUS WINAPI NtSetSystemTime(const LARGE_INTEGER *NewTime, LARGE_INTEGER *OldTime)
978 /* Return the old time if necessary */
980 NtQuerySystemTime(OldTime);
982 RtlTimeToTimeFields(NewTime, &tf);
984 /* call gettimeofday to get the current timezone */
985 gettimeofday(&tv, &tz);
987 /* get delta local time from utc */
988 bias = TIME_GetBias(oldsec, &dst);
990 /* get the number of seconds */
991 t.tm_sec = tf.Second;
992 t.tm_min = tf.Minute;
995 t.tm_mon = tf.Month - 1;
996 t.tm_year = tf.Year - 1900;
999 /* correct for timezone and daylight */
1002 /* set the new time */
1004 tv.tv_usec = tf.Milliseconds * 1000;
1006 /* error and sanity check*/
1007 if(sec == (time_t)-1 || abs((int)(sec-oldsec)) > SETTIME_MAX_ADJUST) {
1010 #ifdef HAVE_SETTIMEOFDAY
1011 err = settimeofday(&tv, NULL); /* 0 is OK, -1 is error */
1013 return STATUS_SUCCESS;
1019 ERR("Cannot set time to %d/%d/%d %d:%d:%d Time adjustment %ld %s\n",
1020 tf.Year, tf.Month, tf.Day, tf.Hour, tf.Minute, tf.Second,
1022 err == -1 ? "No Permission"
1023 : sec == (time_t)-1 ? "" : "is too large." );
1026 return STATUS_INVALID_PARAMETER;
1028 return STATUS_PRIVILEGE_NOT_HELD;
1030 return STATUS_NOT_IMPLEMENTED;