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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
26 #include "wine/port.h"
33 #ifdef HAVE_SYS_TIME_H
34 # include <sys/time.h>
40 #define NONAMELESSUNION
41 #define NONAMELESSSTRUCT
43 #define WIN32_NO_STATUS
46 #include "wine/unicode.h"
47 #include "wine/debug.h"
48 #include "ntdll_misc.h"
50 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
52 static RTL_CRITICAL_SECTION TIME_GetBias_section;
53 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
55 0, 0, &TIME_GetBias_section,
56 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
57 0, 0, { (DWORD_PTR)(__FILE__ ": TIME_GetBias_section") }
59 static RTL_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',' ',
107 'T','i','m','e',0}, 540, 0 },
109 {'A','l','a','s','k','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
110 'i','m','e','\0'}, 480, 1},
112 {'P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r','d',' ','T',
113 'i','m','e','\0'}, 480, 0},
115 {'P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r','d',' ','T',
116 'i','m','e','\0'}, 420, 1},
118 {'U','S',' ','M','o','u','n','t','a','i','n',' ','S','t','a','n','d','a',
119 'r','d',' ','T','i','m','e','\0'}, 420, 0},
121 {'M','o','u','n','t','a','i','n',' ','S','t','a','n','d','a','r','d',' ',
122 'T','i','m','e','\0'}, 360, 1},
124 {'C','e','n','t','r','a','l',' ','A','m','e','r','i','c','a',' ','S','t',
125 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, 360, 0},
127 {'C','e','n','t','r','a','l',' ','S','t','a','n','d','a','r','d',' ','T',
128 'i','m','e','\0'}, 300, 1},
130 {'S','A',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r',
131 'd',' ','T','i','m','e','\0'}, 300, 0},
133 {'S','A',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r',
134 'd',' ','T','i','m','e',0}, 300, 0 },
136 {'E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r','d',' ','T',
137 'i','m','e','\0'}, 240, 1},
139 {'U','S',' ','E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r',
140 'd',' ','T','i','m','e','\0'}, 300, 0},
142 {'E','a','s','t','e','r','n',' ','C','e','n','t','r','a','l',' ','S','t','a','n','d','a','r',
143 'd',' ','T','i','m','e','\0'}, 300, 0},
145 {'A','t','l','a','n','t','i','c',' ','S','t','a','n','d','a','r','d',' ',
146 'T','i','m','e','\0'}, 180, 1},
148 {'S','A',' ','W','e','s','t','e','r','n',' ','S','t','a','n','d','a','r',
149 'd',' ','T','i','m','e','\0'}, 240, 0},
151 {'P','a','c','i','f','i','c',' ','S','A',' ','S','t','a','n','d','a','r',
152 'd',' ','T','i','m','e','\0'}, 240, 0},
154 {'P','a','c','i','f','i','c',' ','S','A',' ','S','t','a','n','d','a','r',
155 'd',' ','T','i','m','e',0}, 180, 1},
157 {'A','t','l','a','n','t','i','c',' ','S','t','a','n','d','a','r','d',' ',
158 'T','i','m','e',0}, 240, 0 },
160 {'N','e','w','f','o','u','n','d','l','a','n','d',' ','S','t','a','n','d',
161 'a','r','d',' ','T','i','m','e','\0'}, 150, 1},
163 {'N','e','w','f','o','u','n','d','l','a','n','d',' ','S','t','a','n','d',
164 'a','r','d',' ','T','i','m','e',0}, 210, 0 },
166 {'B','r','a','z','i','l','i','a','n',' ','S','t','a','n','d','a','r','d',
167 ' ','T','i','m','e','\0'}, 180, 0},
169 {'B','r','a','z','i','l','i','a','n',' ','S','u','m','m','e','r',
170 ' ','T','i','m','e','\0'}, 120, 1},
172 {'S','A',' ','E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r',
173 'd',' ','T','i','m','e','\0'}, 180, 0},
175 {'G','r','e','e','n','l','a','n','d',' ','S','t','a','n','d','a','r','d',
176 ' ','T','i','m','e','\0'}, 120, 1},
178 {'M','i','d','-','A','t','l','a','n','t','i','c',' ','S','t','a','n','d',
179 'a','r','d',' ','T','i','m','e','\0'}, 120, 0},
181 {'A','z','o','r','e','s',' ','S','t','a','n','d','a','r','d',' ','T','i',
184 {'A','z','o','r','e','s',' ','S','t','a','n','d','a','r','d',' ','T','i',
185 'm','e','\0'}, 0, 1},
187 {'C','a','p','e',' ','V','e','r','d','e',' ','S','t','a','n','d','a','r',
188 'd',' ','T','i','m','e','\0'}, 60, 0},
190 {'W','e','s','t','e','r','n',' ','E','u','r','o','p','e','a','n',' ','S','u','m','m','e','r',' ','T','i','m','e','\0'}, -60, 1},
192 {'G','r','e','e','n','w','i','c','h',' ','S','t','a','n','d','a','r','d',
193 ' ','T','i','m','e','\0'}, 0, 0},
195 {'G','M','T',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'},
198 {'I','r','i','s','h',' ','S','u','m','m','e','r',' ','T','i','m','e','\0'},
201 {'G','M','T',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'},
204 {'G','M','T',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'},
207 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e','a','n',' ',
208 'T','i','m','e','\0'}, -60, 0},
210 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e',' ','S','t','a',
211 'n','d','a','r','d',' ','T','i','m','e','\0'}, -120, 1},
213 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e',' ','S','t','a',
214 'n','d','a','r','d',' ','T','i','m','e','\0'}, -60, 0},
216 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e',' ','D','a','y',
217 'l','i','g','h','t',' ','T','i','m','e','\0'}, -120, 1},
219 {'W','.',' ','C','e','n','t','r','a','l',' ','A','f','r','i','c','a',' ',
220 'S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'}, -60, 0},
222 {'E','.',' ','E','u','r','o','p','e',' ','S','t','a','n','d','a','r','d',
223 ' ','T','i','m','e','\0'}, -180, 1},
225 {'E','g','y','p','t',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
228 {'C','e','n','t','r','a','l',' ','A','f','r','i','c','a','n',' '
229 ,'T','i','m','e','\0'}, -120, 0},
231 {'S','o','u','t','h',' ','A','f','r','i','c','a',' ','S','t','a','n','d',
232 'a','r','d',' ','T','i','m','e','\0'}, -120, 0},
234 {'I','s','r','a','e','l',' ','S','t','a','n','d','a','r','d',' ','T','i',
235 'm','e','\0'}, -120, 0},
237 {'R','u','s','s','i','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
238 'i','m','e','\0'}, -180, 0},
240 {'A','r','a','b','i','c',' ','S','t','a','n','d','a','r','d',' ','T','i',
241 'm','e','\0'}, -240, 1},
243 {'A','r','a','b',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
246 {'R','u','s','s','i','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
247 'i','m','e','\0'}, -240, 1},
249 {'E','.',' ','A','f','r','i','c','a',' ','S','t','a','n','d','a','r','d',
250 ' ','T','i','m','e','\0'}, -180, 0},
252 {'I','r','a','n',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
255 {'I','r','a','n',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
258 {'A','r','a','b','i','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
259 'i','m','e','\0'}, -240, 0},
261 {'C','a','u','c','a','s','u','s',' ','S','t','a','n','d','a','r','d',' ',
262 'T','i','m','e',0}, -240, 0 },
264 {'C','a','u','c','a','s','u','s',' ','S','t','a','n','d','a','r','d',' ',
265 'T','i','m','e','\0'}, -300, 1},
267 {'A','f','g','h','a','n','i','s','t','a','n',' ','S','t','a','n','d','a',
268 'r','d',' ','T','i','m','e','\0'}, -270, 0},
270 {'S','a','m','a','r','a',' ','S','t','a','n','d','a','r','d',' ','T','i',
271 'm','e','\0'}, -270, 1},
273 {'U','r','a','l','s',' ','S','t','a','n','d','a','r','d',
274 ' ','T','i','m','e',' ','(','W','i','n','t','e','r',')','\0'}, -300, 0},
276 {'U','r','a','l','s',' ','D','a','y','l','i','g','h','t',
277 ' ','T','i','m','e',' ','(','S','u','m','m','e','r',')','\0'}, -360, 1},
279 {'W','e','s','t',' ','A','s','i','a',' ','S','t','a','n','d','a','r','d',
280 ' ','T','i','m','e','\0'}, -300, 0},
282 {'I','n','d','i','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
285 {'N','e','p','a','l',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
288 {'N','.',' ','C','e','n','t','r','a','l',' ','A','s','i','a',' ','S','t',
289 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -420, 1},
291 {'C','e','n','t','r','a','l',' ','A','s','i','a',' ','S','t','a','n','d',
292 'a','r','d',' ','T','i','m','e','\0'}, -360, 0},
294 {'S','r','i',' ','L','a','n','k','a',' ','S','t','a','n','d','a','r','d',
295 ' ','T','i','m','e','\0'}, -360, 0},
297 {'M','y','a','n','m','a','r',' ','S','t','a','n','d','a','r','d',' ','T',
298 'i','m','e','\0'}, -390, 0},
300 {'S','E',' ','A','s','i','a',' ','S','t','a','n','d','a','r','d',' ','T',
301 'i','m','e','\0'}, -420, 0},
303 {'N','o','r','t','h',' ','A','s','i','a',' ','S','t','a','n','d','a','r',
304 'd',' ','T','i','m','e',0}, -420, 0},
306 {'N','o','r','t','h',' ','A','s','i','a',' ','S','t','a','n','d','a','r',
307 'd',' ','T','i','m','e','\0'}, -480, 1},
309 {'N','o','r','t','h',' ','A','s','i','a',' ','E','a','s','t',' ','S','t',
310 'a','n','d','a','r','d',' ','T','i','m','e',0}, -480, 0},
312 {'C','h','i','n','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
315 {'N','o','r','t','h',' ','A','s','i','a',' ','E','a','s','t',' ','S','t',
316 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -540, 1},
318 {'M','a','l','a','y',' ','P','e','n','i','n','s','u','l','a',' ','S','t',
319 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -480, 0},
321 {'W','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d',
322 'a','r','d',' ','T','i','m','e','\0'}, -480, 0},
324 {'T','o','k','y','o',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
327 {'K','o','r','e','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
330 {'Y','a','k','u','t','s','k',' ','S','t','a','n','d','a','r','d',' ','T',
331 'i','m','e','\0'}, -600, 1},
333 {'C','e','n','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a',
334 'n','d','a','r','d',' ','T','i','m','e','\0'}, -570, 0},
336 {'C','e','n','.',' ','A','u','s','t','r','a','l','i','a',' ','D','a','y',
337 'l','i','g','h','t',' ','T','i','m','e','\0'}, -630, 1},
339 {'E','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d',
340 'a','r','d',' ','T','i','m','e','\0'}, -600, 0},
342 {'E','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d',
343 'a','r','d',' ','T','i','m','e','\0'}, -660, 1},
345 {'W','e','s','t',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d',
346 'a','r','d',' ','T','i','m','e','\0'}, -600, 0},
348 {'V','l','a','d','i','v','o','s','t','o','k',' ','S','t','a','n','d','a',
349 'r','d',' ','T','i','m','e',0}, -600, 0 },
351 {'W','e','s','t',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d',
352 'a','r','d',' ','T','i','m','e',0}, -600, 0},
354 {'V','l','a','d','i','v','o','s','t','o','k',' ','S','t','a','n','d','a',
355 'r','d',' ','T','i','m','e','\0'}, -660, 1},
357 {'C','e','n','t','r','a','l',' ','P','a','c','i','f','i','c',' ','S','t',
358 'a','n','d','a','r','d',' ','T','i','m','e',0}, -660, 0},
360 {'C','e','n','t','r','a','l',' ','P','a','c','i','f','i','c',' ','S','t',
361 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -720, 1},
363 {'N','e','w',' ','Z','e','a','l','a','n','d',' ','S','t','a','n','d','a',
364 'r','d',' ','T','i','m','e','\0'}, -720, 0},
366 {'N','e','w',' ','Z','e','a','l','a','n','d',' ','D','a','y','l','i','g',
367 'h','t',' ','T','i','m','e','\0'}, -780, 1},
369 {'F','i','j','i',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
372 {'T','o','n','g','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
375 {'N','.',' ','C','e','n','t','r','a','l',' ','A','s','i','a',' ','S','t',
376 'a','n','d','a','r','d',' ','T','i','m','e',0 }, -360, 0},
378 {'N','o','v','o','s','i','b','i','r','s','k',' ','S','t','a','n','d','a',
379 'r','d',' ','T','i','m','e','\0'}, -360, 1},
381 {'A','n','a','d','y','r',' ','S','t','a','n','d','a','r','d',' ','T','i',
382 'm','e','\0'}, -720, 1},
384 {'H','o','n','g',' ','K','o','n','g',' ','S','t','a','n','d','a','r','d',
385 ' ','T','i','m','e','\0'}, -480, 0},
387 {'U','r','u','g','u','a','y','a','n',' ','T','i','m','e','\0'}, 180, 0},
389 {'M','a','l','a','y','s','i','a','n',' ','T','i','m','e','\0'}, -480, 0},
391 {'P','h','i','l','i','p','p','i','n','e',' ','T','i','m','e','\0'}, -480, 0},
393 {'N','o','v','o','s','i','b','i','r','s','k',' ','S','u','m','m','e','r',
394 ' ','T','i','m','e','\0'}, -480, 1},
396 {'U','z','b','e','k','i','s','t','h','a','n',' ','T','i','m','e','\0'}, -300, 0}
399 #define TICKSPERSEC 10000000
400 #define TICKSPERMSEC 10000
401 #define SECSPERDAY 86400
402 #define SECSPERHOUR 3600
403 #define SECSPERMIN 60
404 #define MINSPERHOUR 60
405 #define HOURSPERDAY 24
406 #define EPOCHWEEKDAY 1 /* Jan 1, 1601 was Monday */
407 #define DAYSPERWEEK 7
408 #define EPOCHYEAR 1601
409 #define DAYSPERNORMALYEAR 365
410 #define DAYSPERLEAPYEAR 366
411 #define MONSPERYEAR 12
412 #define DAYSPERQUADRICENTENNIUM (365 * 400 + 97)
413 #define DAYSPERNORMALCENTURY (365 * 100 + 24)
414 #define DAYSPERNORMALQUADRENNIUM (365 * 4 + 1)
416 /* 1601 to 1970 is 369 years plus 89 leap days */
417 #define SECS_1601_TO_1970 ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
418 #define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)
419 /* 1601 to 1980 is 379 years plus 91 leap days */
420 #define SECS_1601_TO_1980 ((379 * 365 + 91) * (ULONGLONG)SECSPERDAY)
421 #define TICKS_1601_TO_1980 (SECS_1601_TO_1980 * TICKSPERSEC)
422 /* max ticks that can be represented as Unix time */
423 #define TICKS_1601_TO_UNIX_MAX ((SECS_1601_TO_1970 + INT_MAX) * TICKSPERSEC)
426 static const int MonthLengths[2][MONSPERYEAR] =
428 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
429 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
432 static inline int IsLeapYear(int Year)
434 return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0) ? 1 : 0;
437 /***********************************************************************
438 * NTDLL_get_server_abstime
440 * Convert a NTDLL time into an abs_time_t struct to send to the server.
442 void NTDLL_get_server_abstime( abs_time_t *when, const LARGE_INTEGER *timeout )
446 if (!timeout) /* infinite timeout */
448 when->sec = when->usec = 0;
450 else if (timeout->QuadPart <= 0) /* relative timeout */
454 if (-timeout->QuadPart > (LONGLONG)INT_MAX * TICKSPERSEC)
455 when->sec = when->usec = INT_MAX;
458 ULONG sec = RtlEnlargedUnsignedDivide( -timeout->QuadPart, TICKSPERSEC, &remainder );
459 gettimeofday( &tv, 0 );
460 when->sec = tv.tv_sec + sec;
461 if ((when->usec = tv.tv_usec + (remainder / 10)) >= 1000000)
463 when->usec -= 1000000;
466 if (when->sec < tv.tv_sec) /* overflow */
467 when->sec = when->usec = INT_MAX;
470 else /* absolute time */
472 if (timeout->QuadPart < TICKS_1601_TO_1970)
473 when->sec = when->usec = 0;
474 else if (timeout->QuadPart > TICKS_1601_TO_UNIX_MAX)
475 when->sec = when->usec = INT_MAX;
478 when->sec = RtlEnlargedUnsignedDivide( timeout->QuadPart - TICKS_1601_TO_1970,
479 TICKSPERSEC, &remainder );
480 when->usec = remainder / 10;
486 /***********************************************************************
487 * NTDLL_from_server_abstime
489 * Convert a timeval struct from the server into an NTDLL time.
491 void NTDLL_from_server_abstime( LARGE_INTEGER *time, const abs_time_t *when )
493 time->QuadPart = when->sec * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
494 time->QuadPart += when->usec * 10;
498 /******************************************************************************
499 * RtlTimeToTimeFields [NTDLL.@]
501 * Convert a time into a TIME_FIELDS structure.
504 * liTime [I] Time to convert.
505 * TimeFields [O] Destination for the converted time.
510 VOID WINAPI RtlTimeToTimeFields(
511 const LARGE_INTEGER *liTime,
512 PTIME_FIELDS TimeFields)
515 long int cleaps, years, yearday, months;
519 /* Extract millisecond from time and convert time into seconds */
520 TimeFields->Milliseconds =
521 (CSHORT) (( liTime->QuadPart % TICKSPERSEC) / TICKSPERMSEC);
522 Time = liTime->QuadPart / TICKSPERSEC;
524 /* The native version of RtlTimeToTimeFields does not take leap seconds
527 /* Split the time into days and seconds within the day */
528 Days = Time / SECSPERDAY;
529 SecondsInDay = Time % SECSPERDAY;
531 /* compute time of day */
532 TimeFields->Hour = (CSHORT) (SecondsInDay / SECSPERHOUR);
533 SecondsInDay = SecondsInDay % SECSPERHOUR;
534 TimeFields->Minute = (CSHORT) (SecondsInDay / SECSPERMIN);
535 TimeFields->Second = (CSHORT) (SecondsInDay % SECSPERMIN);
537 /* compute day of week */
538 TimeFields->Weekday = (CSHORT) ((EPOCHWEEKDAY + Days) % DAYSPERWEEK);
540 /* compute year, month and day of month. */
541 cleaps=( 3 * ((4 * Days + 1227) / DAYSPERQUADRICENTENNIUM) + 3 ) / 4;
542 Days += 28188 + cleaps;
543 years = (20 * Days - 2442) / (5 * DAYSPERNORMALQUADRENNIUM);
544 yearday = Days - (years * DAYSPERNORMALQUADRENNIUM)/4;
545 months = (64 * yearday) / 1959;
546 /* the result is based on a year starting on March.
547 * To convert take 12 from Januari and Februari and
548 * increase the year by one. */
550 TimeFields->Month = months - 1;
551 TimeFields->Year = years + 1524;
553 TimeFields->Month = months - 13;
554 TimeFields->Year = years + 1525;
556 /* calculation of day of month is based on the wonderful
557 * sequence of INT( n * 30.6): it reproduces the
558 * 31-30-31-30-31-31 month lengths exactly for small n's */
559 TimeFields->Day = yearday - (1959 * months) / 64 ;
563 /******************************************************************************
564 * RtlTimeFieldsToTime [NTDLL.@]
566 * Convert a TIME_FIELDS structure into a time.
569 * ftTimeFields [I] TIME_FIELDS structure to convert.
570 * Time [O] Destination for the converted time.
576 BOOLEAN WINAPI RtlTimeFieldsToTime(
577 PTIME_FIELDS tfTimeFields,
580 int month, year, cleaps, day;
582 /* FIXME: normalize the TIME_FIELDS structure here */
583 /* No, native just returns 0 (error) if the fields are not */
584 if( tfTimeFields->Milliseconds< 0 || tfTimeFields->Milliseconds > 999 ||
585 tfTimeFields->Second < 0 || tfTimeFields->Second > 59 ||
586 tfTimeFields->Minute < 0 || tfTimeFields->Minute > 59 ||
587 tfTimeFields->Hour < 0 || tfTimeFields->Hour > 23 ||
588 tfTimeFields->Month < 1 || tfTimeFields->Month > 12 ||
589 tfTimeFields->Day < 1 ||
590 tfTimeFields->Day > MonthLengths
591 [ tfTimeFields->Month ==2 || IsLeapYear(tfTimeFields->Year)]
592 [ tfTimeFields->Month - 1] ||
593 tfTimeFields->Year < 1601 )
596 /* now calculate a day count from the date
597 * First start counting years from March. This way the leap days
598 * are added at the end of the year, not somewhere in the middle.
599 * Formula's become so much less complicate that way.
600 * To convert: add 12 to the month numbers of Jan and Feb, and
601 * take 1 from the year */
602 if(tfTimeFields->Month < 3) {
603 month = tfTimeFields->Month + 13;
604 year = tfTimeFields->Year - 1;
606 month = tfTimeFields->Month + 1;
607 year = tfTimeFields->Year;
609 cleaps = (3 * (year / 100) + 3) / 4; /* nr of "century leap years"*/
610 day = (36525 * year) / 100 - cleaps + /* year * dayperyr, corrected */
611 (1959 * month) / 64 + /* months * daypermonth */
612 tfTimeFields->Day - /* day of the month */
613 584817 ; /* zero that on 1601-01-01 */
616 Time->QuadPart = (((((LONGLONG) day * HOURSPERDAY +
617 tfTimeFields->Hour) * MINSPERHOUR +
618 tfTimeFields->Minute) * SECSPERMIN +
619 tfTimeFields->Second ) * 1000 +
620 tfTimeFields->Milliseconds ) * TICKSPERMSEC;
625 /***********************************************************************
626 * TIME_GetBias [internal]
628 * Helper function calculates delta local time from UTC.
631 * utc [I] The current utc time.
632 * pdaylight [I] Local daylight.
635 * The bias for the current timezone.
637 static int TIME_GetBias(time_t utc, int *pdaylight)
640 static time_t last_utc;
641 static int last_bias;
642 static int last_daylight;
645 RtlEnterCriticalSection( &TIME_GetBias_section );
648 *pdaylight = last_daylight;
652 ptm = localtime(&utc);
653 *pdaylight = last_daylight =
654 ptm->tm_isdst; /* daylight for local timezone */
656 ptm->tm_isdst = *pdaylight; /* use local daylight, not that of Greenwich */
658 ret = last_bias = (int)(utc-mktime(ptm));
660 RtlLeaveCriticalSection( &TIME_GetBias_section );
664 /******************************************************************************
665 * RtlLocalTimeToSystemTime [NTDLL.@]
667 * Convert a local time into system time.
670 * LocalTime [I] Local time to convert.
671 * SystemTime [O] Destination for the converted time.
674 * Success: STATUS_SUCCESS.
675 * Failure: An NTSTATUS error code indicating the problem.
677 NTSTATUS WINAPI RtlLocalTimeToSystemTime( const LARGE_INTEGER *LocalTime,
678 PLARGE_INTEGER SystemTime)
683 TRACE("(%p, %p)\n", LocalTime, SystemTime);
686 bias = TIME_GetBias(gmt, &daylight);
688 SystemTime->QuadPart = LocalTime->QuadPart - bias * (LONGLONG)TICKSPERSEC;
689 return STATUS_SUCCESS;
692 /******************************************************************************
693 * RtlSystemTimeToLocalTime [NTDLL.@]
695 * Convert a system time into a local time.
698 * SystemTime [I] System time to convert.
699 * LocalTime [O] Destination for the converted time.
702 * Success: STATUS_SUCCESS.
703 * Failure: An NTSTATUS error code indicating the problem.
705 NTSTATUS WINAPI RtlSystemTimeToLocalTime( const LARGE_INTEGER *SystemTime,
706 PLARGE_INTEGER LocalTime )
711 TRACE("(%p, %p)\n", SystemTime, LocalTime);
714 bias = TIME_GetBias(gmt, &daylight);
716 LocalTime->QuadPart = SystemTime->QuadPart + bias * (LONGLONG)TICKSPERSEC;
717 return STATUS_SUCCESS;
720 /******************************************************************************
721 * RtlTimeToSecondsSince1970 [NTDLL.@]
723 * Convert a time into a count of seconds since 1970.
726 * Time [I] Time to convert.
727 * Seconds [O] Destination for the converted time.
731 * Failure: FALSE, if the resulting value will not fit in a DWORD.
733 BOOLEAN WINAPI RtlTimeToSecondsSince1970( const LARGE_INTEGER *Time, LPDWORD Seconds )
735 ULONGLONG tmp = ((ULONGLONG)Time->u.HighPart << 32) | Time->u.LowPart;
736 tmp = RtlLargeIntegerDivide( tmp, TICKSPERSEC, NULL );
737 tmp -= SECS_1601_TO_1970;
738 if (tmp > 0xffffffff) return FALSE;
739 *Seconds = (DWORD)tmp;
743 /******************************************************************************
744 * RtlTimeToSecondsSince1980 [NTDLL.@]
746 * Convert a time into a count of seconds since 1980.
749 * Time [I] Time to convert.
750 * Seconds [O] Destination for the converted time.
754 * Failure: FALSE, if the resulting value will not fit in a DWORD.
756 BOOLEAN WINAPI RtlTimeToSecondsSince1980( const LARGE_INTEGER *Time, LPDWORD Seconds )
758 ULONGLONG tmp = ((ULONGLONG)Time->u.HighPart << 32) | Time->u.LowPart;
759 tmp = RtlLargeIntegerDivide( tmp, TICKSPERSEC, NULL );
760 tmp -= SECS_1601_TO_1980;
761 if (tmp > 0xffffffff) return FALSE;
762 *Seconds = (DWORD)tmp;
766 /******************************************************************************
767 * RtlSecondsSince1970ToTime [NTDLL.@]
769 * Convert a count of seconds since 1970 to a time.
772 * Seconds [I] Time to convert.
773 * Time [O] Destination for the converted time.
778 void WINAPI RtlSecondsSince1970ToTime( DWORD Seconds, LARGE_INTEGER *Time )
780 ULONGLONG secs = Seconds * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
781 Time->u.LowPart = (DWORD)secs;
782 Time->u.HighPart = (DWORD)(secs >> 32);
785 /******************************************************************************
786 * RtlSecondsSince1980ToTime [NTDLL.@]
788 * Convert a count of seconds since 1980 to a time.
791 * Seconds [I] Time to convert.
792 * Time [O] Destination for the converted time.
797 void WINAPI RtlSecondsSince1980ToTime( DWORD Seconds, LARGE_INTEGER *Time )
799 ULONGLONG secs = Seconds * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1980;
800 Time->u.LowPart = (DWORD)secs;
801 Time->u.HighPart = (DWORD)(secs >> 32);
804 /******************************************************************************
805 * RtlTimeToElapsedTimeFields [NTDLL.@]
807 * Convert a time to a count of elapsed seconds.
810 * Time [I] Time to convert.
811 * TimeFields [O] Destination for the converted time.
816 void WINAPI RtlTimeToElapsedTimeFields( const LARGE_INTEGER *Time, PTIME_FIELDS TimeFields )
821 time = RtlExtendedLargeIntegerDivide( Time->QuadPart, TICKSPERSEC, &rem );
822 TimeFields->Milliseconds = rem / TICKSPERMSEC;
824 /* time is now in seconds */
825 TimeFields->Year = 0;
826 TimeFields->Month = 0;
827 TimeFields->Day = RtlExtendedLargeIntegerDivide( time, SECSPERDAY, &rem );
829 /* rem is now the remaining seconds in the last day */
830 TimeFields->Second = rem % 60;
832 TimeFields->Minute = rem % 60;
833 TimeFields->Hour = rem / 60;
836 /***********************************************************************
837 * NtQuerySystemTime [NTDLL.@]
838 * ZwQuerySystemTime [NTDLL.@]
840 * Get the current system time.
843 * Time [O] Destination for the current system time.
846 * Success: STATUS_SUCCESS.
847 * Failure: An NTSTATUS error code indicating the problem.
849 NTSTATUS WINAPI NtQuerySystemTime( PLARGE_INTEGER Time )
853 gettimeofday( &now, 0 );
854 Time->QuadPart = now.tv_sec * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
855 Time->QuadPart += now.tv_usec * 10;
856 return STATUS_SUCCESS;
859 /******************************************************************************
860 * NtQueryPerformanceCounter [NTDLL.@]
862 * Note: Windows uses a timer clocked at a multiple of 1193182 Hz. There is a
863 * good number of applications that crash when the returned frequency is either
864 * lower or higher then what Windows gives. Also too high counter values are
865 * reported to give problems.
867 NTSTATUS WINAPI NtQueryPerformanceCounter( PLARGE_INTEGER Counter, PLARGE_INTEGER Frequency )
871 if (!Counter) return STATUS_ACCESS_VIOLATION;
872 gettimeofday( &now, 0 );
873 /* convert a counter that increments at a rate of 1 MHz
874 * to one of 1.193182 MHz, with some care for arithmetic
875 * overflow ( will not overflow for 5000 years ) and
876 * good accuracy ( 105/88 = 1.19318182) */
877 Counter->QuadPart = (((now.tv_sec - server_start_time.sec) * (ULONGLONG)1000000 +
878 (now.tv_usec - server_start_time.usec)) * 105) / 88;
879 if (Frequency) Frequency->QuadPart = 1193182;
880 return STATUS_SUCCESS;
884 /******************************************************************************
885 * NtGetTickCount (NTDLL.@)
886 * ZwGetTickCount (NTDLL.@)
888 ULONG WINAPI NtGetTickCount(void)
890 struct timeval current_time;
892 gettimeofday(¤t_time, NULL);
893 return (current_time.tv_sec - server_start_time.sec) * 1000 +
894 (current_time.tv_usec - server_start_time.usec) / 1000;
898 /***********************************************************************
899 * TIME_GetTZAsStr [internal]
901 * Helper function that returns the given timezone as a string.
904 * utc [I] The current utc time.
905 * bias [I] The bias of the current timezone.
912 * This could be done with a hash table instead of merely iterating through a
913 * table, however with the small amount of entries (60 or so) I didn't think
916 static const WCHAR* TIME_GetTZAsStr (time_t utc, int bias, int dst)
919 struct tm *ptm = localtime(&utc);
922 if (!strftime (psTZName, 7, "%Z", ptm))
925 for (i=0; i<(sizeof(TZ_INFO) / sizeof(struct tagTZ_INFO)); i++)
927 if ( strcmp(TZ_INFO[i].psTZFromUnix, psTZName) == 0 &&
928 TZ_INFO[i].bias == bias &&
929 TZ_INFO[i].dst == dst
931 return TZ_INFO[i].psTZWindows;
933 FIXME("Can't match system time zone name \"%s\", bias=%d and dst=%d "
934 "to an entry in TZ_INFO. Please add appropriate entry to "
935 "TZ_INFO and submit as patch to wine-patches\n",psTZName,bias,dst);
939 /*** TIME_GetTimeZoneInfoFromReg: helper for GetTimeZoneInformation ***/
942 static int TIME_GetTimeZoneInfoFromReg(RTL_TIME_ZONE_INFORMATION *tzinfo)
945 KEY_VALUE_PARTIAL_INFORMATION * KpInfo =
946 (KEY_VALUE_PARTIAL_INFORMATION *) buf;
949 OBJECT_ATTRIBUTES attr;
950 UNICODE_STRING nameW;
952 attr.Length = sizeof(attr);
953 attr.RootDirectory = 0;
954 attr.ObjectName = &nameW;
956 attr.SecurityDescriptor = NULL;
957 attr.SecurityQualityOfService = NULL;
958 RtlInitUnicodeString( &nameW, TZInformationKeyW);
959 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr )) {
961 #define GTZIFR_N( valkey, tofield) \
962 RtlInitUnicodeString( &nameW, valkey );\
963 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, KpInfo,\
964 sizeof(buf), &size )) { \
965 if( size >= (sizeof((tofield)) + \
966 offsetof(KEY_VALUE_PARTIAL_INFORMATION,Data))) { \
968 KpInfo->Data, sizeof(tofield)); \
971 #define GTZIFR_S( valkey, tofield) \
972 RtlInitUnicodeString( &nameW, valkey );\
973 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, KpInfo,\
974 sizeof(buf), &size )) { \
975 size_t len = (strlenW( (WCHAR*)KpInfo->Data ) + 1) * sizeof(WCHAR); \
976 if (len > sizeof(tofield)) len = sizeof(tofield); \
977 memcpy( tofield, KpInfo->Data, len ); \
978 tofield[(len/sizeof(WCHAR))-1] = 0; \
981 GTZIFR_N( TZStandardStartW, tzinfo->StandardDate)
982 GTZIFR_N( TZDaylightStartW, tzinfo->DaylightDate)
983 GTZIFR_N( TZBiasW, tzinfo->Bias)
984 GTZIFR_N( TZStandardBiasW, tzinfo->StandardBias)
985 GTZIFR_N( TZDaylightBiasW, tzinfo->DaylightBias)
986 GTZIFR_S( TZStandardNameW, tzinfo->StandardName)
987 GTZIFR_S( TZDaylightNameW, tzinfo->DaylightName)
997 /***********************************************************************
998 * RtlQueryTimeZoneInformation [NTDLL.@]
1000 * Get information about the current timezone.
1003 * tzinfo [O] Destination for the retrieved timezone info.
1006 * Success: STATUS_SUCCESS.
1007 * Failure: An NTSTATUS error code indicating the problem.
1009 NTSTATUS WINAPI RtlQueryTimeZoneInformation(RTL_TIME_ZONE_INFORMATION *tzinfo)
1015 memset(tzinfo, 0, sizeof(RTL_TIME_ZONE_INFORMATION));
1017 if( !TIME_GetTimeZoneInfoFromReg(tzinfo)) {
1020 bias = TIME_GetBias(gmt, &daylight);
1022 tzinfo->Bias = -bias / 60;
1023 tzinfo->StandardBias = 0;
1024 tzinfo->DaylightBias = -60;
1025 tzinfo->StandardName[0]='\0';
1026 tzinfo->DaylightName[0]='\0';
1027 psTZ = TIME_GetTZAsStr (gmt, (-bias/60), daylight);
1028 if (psTZ) strcpyW( tzinfo->StandardName, psTZ );
1030 return STATUS_SUCCESS;
1033 /***********************************************************************
1034 * RtlSetTimeZoneInformation [NTDLL.@]
1036 * Set the current time zone information.
1039 * tzinfo [I] Timezone information to set.
1042 * Success: STATUS_SUCCESS.
1043 * Failure: An NTSTATUS error code indicating the problem.
1046 * Uses the obsolete unix timezone structure and tz_dsttime member.
1048 NTSTATUS WINAPI RtlSetTimeZoneInformation( const RTL_TIME_ZONE_INFORMATION *tzinfo )
1050 #ifdef HAVE_SETTIMEOFDAY
1053 tz.tz_minuteswest = tzinfo->Bias;
1055 tz.tz_dsttime = DST_NONE;
1059 if(!settimeofday(NULL, &tz))
1060 return STATUS_SUCCESS;
1062 return STATUS_PRIVILEGE_NOT_HELD;
1065 /***********************************************************************
1066 * NtSetSystemTime [NTDLL.@]
1067 * ZwSetSystemTime [NTDLL.@]
1069 * Set the system time.
1072 * NewTime [I] The time to set.
1073 * OldTime [O] Optional destination for the previous system time.
1076 * Success: STATUS_SUCCESS.
1077 * Failure: An NTSTATUS error code indicating the problem.
1079 NTSTATUS WINAPI NtSetSystemTime(const LARGE_INTEGER *NewTime, LARGE_INTEGER *OldTime)
1089 /* Return the old time if necessary */
1091 NtQuerySystemTime(OldTime);
1093 RtlTimeToTimeFields(NewTime, &tf);
1095 /* call gettimeofday to get the current timezone */
1096 gettimeofday(&tv, &tz);
1098 /* get delta local time from utc */
1099 bias = TIME_GetBias(oldsec, &dst);
1101 /* get the number of seconds */
1102 t.tm_sec = tf.Second;
1103 t.tm_min = tf.Minute;
1104 t.tm_hour = tf.Hour;
1106 t.tm_mon = tf.Month - 1;
1107 t.tm_year = tf.Year - 1900;
1110 /* correct for timezone and daylight */
1113 /* set the new time */
1115 tv.tv_usec = tf.Milliseconds * 1000;
1117 /* error and sanity check*/
1118 if(sec == (time_t)-1 || abs((int)(sec-oldsec)) > SETTIME_MAX_ADJUST) {
1121 #ifdef HAVE_SETTIMEOFDAY
1122 err = settimeofday(&tv, NULL); /* 0 is OK, -1 is error */
1124 return STATUS_SUCCESS;
1130 ERR("Cannot set time to %d/%d/%d %d:%d:%d Time adjustment %ld %s\n",
1131 tf.Year, tf.Month, tf.Day, tf.Hour, tf.Minute, tf.Second,
1133 err == -1 ? "No Permission"
1134 : sec == (time_t)-1 ? "" : "is too large." );
1137 return STATUS_INVALID_PARAMETER;
1139 return STATUS_PRIVILEGE_NOT_HELD;
1141 return STATUS_NOT_IMPLEMENTED;