From d666143f880f9e19849f8f2b520dc059a11750d1 Mon Sep 17 00:00:00 2001 From: Dmitry Timoshkov Date: Tue, 7 Aug 2007 20:01:16 +0900 Subject: [PATCH] ntdll: Detect current time zone settings. --- dlls/kernel32/tests/time.c | 6 + dlls/ntdll/time.c | 797 +++++++++++++++---------------------- include/winternl.h | 1 + 3 files changed, 336 insertions(+), 468 deletions(-) diff --git a/dlls/kernel32/tests/time.c b/dlls/kernel32/tests/time.c index 6bf79ed7eeb..cf557abf032 100644 --- a/dlls/kernel32/tests/time.c +++ b/dlls/kernel32/tests/time.c @@ -246,6 +246,12 @@ static void test_GetTimeZoneInformation(void) tz_id = GetTimeZoneInformation(&tzinfo); ok(tz_id != TIME_ZONE_ID_INVALID, "GetTimeZoneInformation failed\n"); + trace("tz_id %u (%s)\n", tz_id, + tz_id == TIME_ZONE_ID_DAYLIGHT ? "TIME_ZONE_ID_DAYLIGHT" : + (tz_id == TIME_ZONE_ID_STANDARD ? "TIME_ZONE_ID_STANDARD" : + (tz_id == TIME_ZONE_ID_UNKNOWN ? "TIME_ZONE_ID_UNKNOWN" : + "TIME_ZONE_ID_INVALID"))); + trace("bias %d\n", tzinfo.Bias); trace("standard (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", tzinfo.StandardDate.wDay, tzinfo.StandardDate.wMonth, diff --git a/dlls/ntdll/time.c b/dlls/ntdll/time.c index 4d29c336ca1..b2430218e06 100644 --- a/dlls/ntdll/time.c +++ b/dlls/ntdll/time.c @@ -6,6 +6,7 @@ * Copyright 2002 Rex Jolliff (rex@lvcablemodem.com) * * Copyright 1999 Juergen Schmied + * Copyright 2007 Dmitry Timoshkov * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -50,379 +51,17 @@ WINE_DEFAULT_DEBUG_CHANNEL(ntdll); -static RTL_CRITICAL_SECTION TIME_GetBias_section; +static RTL_CRITICAL_SECTION TIME_tz_section; static RTL_CRITICAL_SECTION_DEBUG critsect_debug = { - 0, 0, &TIME_GetBias_section, + 0, 0, &TIME_tz_section, { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList }, - 0, 0, { (DWORD_PTR)(__FILE__ ": TIME_GetBias_section") } + 0, 0, { (DWORD_PTR)(__FILE__ ": TIME_tz_section") } }; -static RTL_CRITICAL_SECTION TIME_GetBias_section = { &critsect_debug, -1, 0, 0, 0, 0 }; - -/* TimeZone registry key values */ -static const WCHAR TZInformationKeyW[] = { 'M','a','c','h','i','n','e','\\', - 'S','Y','S','T','E','M','\\','C','u','r','r','e','n','t','C','o','n','t','r', - 'o','l','S','e','t','\\','C','o','n','t','r','o','l','\\','T','i','m','e','z', - 'o','n','e','I','n','f','o','r','m','a','t','i','o','n', 0}; -static const WCHAR TZStandardStartW[] = { - 'S','t','a','n','d','a','r','d','s','t','a','r','t', 0}; -static const WCHAR TZDaylightStartW[] = { - 'D','a','y','l','i','g','h','t','s','t','a','r','t', 0}; -static const WCHAR TZDaylightBiasW[] = { - 'D','a','y','l','i','g','h','t','B','i','a','s', 0}; -static const WCHAR TZStandardBiasW[] = { - 'S','t','a','n','d','a','r','d','B','i','a','s', 0}; -static const WCHAR TZBiasW[] = {'B','i','a','s', 0}; -static const WCHAR TZDaylightNameW[] = { - 'D','a','y','l','i','g','h','t','N','a','m','e', 0}; -static const WCHAR TZStandardNameW[] = { - 'S','t','a','n','d','a','r','d','N','a','m','e', 0}; - +static RTL_CRITICAL_SECTION TIME_tz_section = { &critsect_debug, -1, 0, 0, 0, 0 }; #define SETTIME_MAX_ADJUST 120 -/* This structure is used to store strings that represent all of the time zones - * in the world. (This is used to help GetTimeZoneInformation) - */ -struct tagTZ_INFO -{ - const char *psTZFromUnix; - WCHAR psTZWindows[32]; - int bias; - int dst; -}; - -static const struct tagTZ_INFO TZ_INFO[] = -{ - {"MHT", - {'D','a','t','e','l','i','n','e',' ','S','t','a','n','d','a','r','d',' ', - 'T','i','m','e','\0'}, -720, 0}, - {"SST", - {'S','a','m','o','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m', - 'e','\0'}, 660, 0}, - {"HST", - {'H','a','w','a','i','i','a','n',' ','S','t','a','n','d','a','r','d',' ', - 'T','i','m','e','\0'}, 600, 0}, - {"AKST", - {'A','l','a','s','k','a','n',' ','S','t','a','n','d','a','r','d',' ', - 'T','i','m','e',0}, 540, 0 }, - {"AKDT", - {'A','l','a','s','k','a','n',' ','S','t','a','n','d','a','r','d',' ','T', - 'i','m','e','\0'}, 480, 1}, - {"PST", - {'P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r','d',' ','T', - 'i','m','e','\0'}, 480, 0}, - {"PDT", - {'P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r','d',' ','T', - 'i','m','e','\0'}, 420, 1}, - {"MST", - {'U','S',' ','M','o','u','n','t','a','i','n',' ','S','t','a','n','d','a', - 'r','d',' ','T','i','m','e','\0'}, 420, 0}, - {"MDT", - {'M','o','u','n','t','a','i','n',' ','S','t','a','n','d','a','r','d',' ', - 'T','i','m','e','\0'}, 360, 1}, - {"CST", - {'C','e','n','t','r','a','l',' ','A','m','e','r','i','c','a',' ','S','t', - 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, 360, 0}, - {"CDT", - {'C','e','n','t','r','a','l',' ','S','t','a','n','d','a','r','d',' ','T', - 'i','m','e','\0'}, 300, 1}, - {"COT", - {'S','A',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r', - 'd',' ','T','i','m','e','\0'}, 300, 0}, - {"PET", - {'S','A',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r', - 'd',' ','T','i','m','e',0}, 300, 0 }, - {"EDT", - {'E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r','d',' ','T', - 'i','m','e','\0'}, 240, 1}, - {"EST", - {'U','S',' ','E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r', - 'd',' ','T','i','m','e','\0'}, 300, 0}, - 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{"EST", - {'E','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d', - 'a','r','d',' ','T','i','m','e','\0'}, -600, 0}, - {"EST", - {'E','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d', - 'a','r','d',' ','T','i','m','e','\0'}, -660, 1}, - {"GST", - {'W','e','s','t',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d', - 'a','r','d',' ','T','i','m','e','\0'}, -600, 0}, - {"VLAT", - {'V','l','a','d','i','v','o','s','t','o','k',' ','S','t','a','n','d','a', - 'r','d',' ','T','i','m','e',0}, -600, 0 }, - {"ChST", - {'W','e','s','t',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d', - 'a','r','d',' ','T','i','m','e',0}, -600, 0}, - {"VLAST", - {'V','l','a','d','i','v','o','s','t','o','k',' ','S','t','a','n','d','a', - 'r','d',' ','T','i','m','e','\0'}, -660, 1}, - {"MAGT", - {'C','e','n','t','r','a','l',' ','P','a','c','i','f','i','c',' ','S','t', - 'a','n','d','a','r','d',' ','T','i','m','e',0}, -660, 0}, - {"MAGST", - {'C','e','n','t','r','a','l',' ','P','a','c','i','f','i','c',' ','S','t', - 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -720, 1}, - {"NZST", - {'N','e','w',' ','Z','e','a','l','a','n','d',' ','S','t','a','n','d','a', - 'r','d',' ','T','i','m','e','\0'}, -720, 0}, - {"NZDT", - {'N','e','w',' ','Z','e','a','l','a','n','d',' ','D','a','y','l','i','g', - 'h','t',' ','T','i','m','e','\0'}, -780, 1}, - {"FJT", - {'F','i','j','i',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e', - '\0'}, -720, 0}, - {"TOT", - {'T','o','n','g','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m', - 'e','\0'}, -780, 0}, - {"NOVT", - {'N','.',' ','C','e','n','t','r','a','l',' ','A','s','i','a',' ','S','t', - 'a','n','d','a','r','d',' ','T','i','m','e',0 }, -360, 0}, - {"NOVT", - {'N','o','v','o','s','i','b','i','r','s','k',' ','S','t','a','n','d','a', - 'r','d',' ','T','i','m','e','\0'}, -360, 1}, - {"ANAT", - {'A','n','a','d','y','r',' ','S','t','a','n','d','a','r','d',' ','T','i', - 'm','e','\0'}, -720, 1}, - {"HKT", - {'H','o','n','g',' ','K','o','n','g',' ','S','t','a','n','d','a','r','d', - ' ','T','i','m','e','\0'}, -480, 0}, - {"UYT", - {'U','r','u','g','u','a','y','a','n',' ','T','i','m','e','\0'}, 180, 0}, - {"UYST", - {'U','r','u','g','u','a','y','a','n',' ','S','u','m','m','e','r',' ','T', - 'i','m','e','\0'}, 120, 1}, - {"MYT", - {'M','a','l','a','y','s','i','a','n',' ','T','i','m','e','\0'}, -480, 0}, - {"PHT", - {'P','h','i','l','i','p','p','i','n','e',' ','T','i','m','e','\0'}, -480, 0}, - {"NOVST", - {'N','o','v','o','s','i','b','i','r','s','k',' ','S','u','m','m','e','r', - ' ','T','i','m','e','\0'}, -420, 1}, - {"BOT", - {'B','o','l','i','v','i','a','n',' ','T','i','m','e','\0'}, 240, 0}, - {"UZT", - {'U','z','b','e','k','i','s','t','h','a','n',' ','T','i','m','e','\0'}, -300, 0} -}; - #define TICKSPERSEC 10000000 #define TICKSPERMSEC 10000 #define SECSPERDAY 86400 @@ -608,7 +247,7 @@ static int TIME_GetBias(time_t utc, int *pdaylight) static int last_daylight; int ret; - RtlEnterCriticalSection( &TIME_GetBias_section ); + RtlEnterCriticalSection( &TIME_tz_section ); if (utc != last_utc) { ptm = localtime(&utc); @@ -622,7 +261,7 @@ static int TIME_GetBias(time_t utc, int *pdaylight) *pdaylight = last_daylight; ret = last_bias; - RtlLeaveCriticalSection( &TIME_GetBias_section ); + RtlLeaveCriticalSection( &TIME_tz_section ); return ret; } @@ -857,63 +496,114 @@ ULONG WINAPI NtGetTickCount(void) return (now.QuadPart - server_start_time) / 10000; } - -/*********************************************************************** - * TIME_GetTZAsStr [internal] +/* calculate the mday of dst change date, so that for instance Sun 5 Oct 2007 + * (last Sunday in October of 2007) becomes Sun Oct 28 2007 * - * Helper function that returns the given timezone as a string. - * - * PARAMS - * utc [I] The current utc time. - * bias [I] The bias of the current timezone. - * dst [I] ?? - * - * RETURNS - * Timezone name. - * - * NOTES: - * This could be done with a hash table instead of merely iterating through a - * table, however with the small amount of entries (60 or so) I didn't think - * it was worth it. + * Note: year, day and month must be in unix format. */ -static const WCHAR* TIME_GetTZAsStr (time_t utc, int bias, int dst) +static int weekday_to_mday(int year, int day, int mon, int day_of_week) { - char psTZName[7]; - struct tm *ptm = localtime(&utc); - unsigned int i; + struct tm date; + time_t tmp; + int wday, mday; - if (!strftime (psTZName, 7, "%Z", ptm)) - { - WARN("strftime error %d\n", errno); - return NULL; - } + /* find first day in the month matching week day of the date */ + memset(&date, 0, sizeof(date)); + date.tm_year = year; + date.tm_mon = mon; + date.tm_mday = -1; + date.tm_wday = -1; + do + { + date.tm_mday++; + tmp = mktime(&date); + } while (date.tm_wday != day_of_week || date.tm_mon != mon); - for (i=0; i<(sizeof(TZ_INFO) / sizeof(struct tagTZ_INFO)); i++) - { - if ( strcmp(TZ_INFO[i].psTZFromUnix, psTZName) == 0 && - TZ_INFO[i].bias == bias && - TZ_INFO[i].dst == dst - ) - return TZ_INFO[i].psTZWindows; - } - FIXME("Can't match system time zone name \"%s\", bias=%d and dst=%d " - "to an entry in TZ_INFO. Please add appropriate entry to " - "TZ_INFO and submit as patch to wine-patches\n",psTZName,bias,dst); - return NULL; + mday = date.tm_mday; + + /* find number of week days in the month matching week day of the date */ + wday = 1; /* 1 - 1st, ...., 5 - last */ + while (wday < day) + { + struct tm *tm; + + date.tm_mday += 7; + tmp = mktime(&date); + tm = localtime(&tmp); + if (tm->tm_mon != mon) + break; + mday = tm->tm_mday; + wday++; + } + + return mday; } -/*** TIME_GetTimeZoneInfoFromReg: helper for GetTimeZoneInformation ***/ - - -static int TIME_GetTimeZoneInfoFromReg(RTL_TIME_ZONE_INFORMATION *tzinfo) +static BOOL match_tz_date(const RTL_SYSTEM_TIME *st, const RTL_SYSTEM_TIME *reg_st) { - BYTE buf[90]; - KEY_VALUE_PARTIAL_INFORMATION * KpInfo = - (KEY_VALUE_PARTIAL_INFORMATION *) buf; + WORD wDay; + + if (st->wMonth != reg_st->wMonth) return FALSE; + + if (!st->wMonth) return TRUE; /* no transition dates */ + + wDay = reg_st->wDay; + if (!reg_st->wYear) /* date in a day-of-week format */ + wDay = weekday_to_mday(st->wYear - 1900, reg_st->wDay, reg_st->wMonth - 1, reg_st->wDayOfWeek); + + if (st->wDay != wDay || + st->wHour != reg_st->wHour || + st->wMinute != reg_st->wMinute || + st->wSecond != reg_st->wSecond || + st->wMilliseconds != reg_st->wMilliseconds) return FALSE; + + return TRUE; +} + +static BOOL match_tz_info(const RTL_TIME_ZONE_INFORMATION *tzi, const RTL_TIME_ZONE_INFORMATION *reg_tzi) +{ + if (tzi->Bias == reg_tzi->Bias && + match_tz_date(&tzi->StandardDate, ®_tzi->StandardDate) && + match_tz_date(&tzi->DaylightDate, ®_tzi->DaylightDate)) + return TRUE; + + return FALSE; +} + +static BOOL reg_query_value(HKEY hkey, LPCWSTR name, DWORD type, void *data, DWORD count) +{ + UNICODE_STRING nameW; + char buf[256]; + KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buf; + + if (count > sizeof(buf) - sizeof(KEY_VALUE_PARTIAL_INFORMATION)) + return FALSE; + + RtlInitUnicodeString(&nameW, name); + + if (NtQueryValueKey(hkey, &nameW, KeyValuePartialInformation, + buf, sizeof(buf), &count)) + return FALSE; + + if (info->Type != type) return FALSE; + + memcpy(data, info->Data, info->DataLength); + return TRUE; +} + +static void find_reg_tz_info(RTL_TIME_ZONE_INFORMATION *tzi) +{ + static const WCHAR Time_ZonesW[] = { 'M','a','c','h','i','n','e','\\', + 'S','o','f','t','w','a','r','e','\\', + 'M','i','c','r','o','s','o','f','t','\\', + 'W','i','n','d','o','w','s',' ','N','T','\\', + 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\', + 'T','i','m','e',' ','Z','o','n','e','s',0 }; HANDLE hkey; - DWORD size; + ULONG idx; OBJECT_ATTRIBUTES attr; UNICODE_STRING nameW; + WCHAR buf[128]; attr.Length = sizeof(attr); attr.RootDirectory = 0; @@ -921,43 +611,223 @@ static int TIME_GetTimeZoneInfoFromReg(RTL_TIME_ZONE_INFORMATION *tzinfo) attr.Attributes = 0; attr.SecurityDescriptor = NULL; attr.SecurityQualityOfService = NULL; - RtlInitUnicodeString( &nameW, TZInformationKeyW); - if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr )) { - -#define GTZIFR_N( valkey, tofield) \ - RtlInitUnicodeString( &nameW, valkey );\ - if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, KpInfo,\ - sizeof(buf), &size )) { \ - if( size >= (sizeof((tofield)) + \ - offsetof(KEY_VALUE_PARTIAL_INFORMATION,Data))) { \ - memcpy(&(tofield), \ - KpInfo->Data, sizeof(tofield)); \ - } \ - } -#define GTZIFR_S( valkey, tofield) \ - RtlInitUnicodeString( &nameW, valkey );\ - if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, KpInfo,\ - sizeof(buf), &size )) { \ - size_t len = (strlenW( (WCHAR*)KpInfo->Data ) + 1) * sizeof(WCHAR); \ - if (len > sizeof(tofield)) len = sizeof(tofield); \ - memcpy( tofield, KpInfo->Data, len ); \ - tofield[(len/sizeof(WCHAR))-1] = 0; \ - } - - GTZIFR_N( TZStandardStartW, tzinfo->StandardDate) - GTZIFR_N( TZDaylightStartW, tzinfo->DaylightDate) - GTZIFR_N( TZBiasW, tzinfo->Bias) - GTZIFR_N( TZStandardBiasW, tzinfo->StandardBias) - GTZIFR_N( TZDaylightBiasW, tzinfo->DaylightBias) - GTZIFR_S( TZStandardNameW, tzinfo->StandardName) - GTZIFR_S( TZDaylightNameW, tzinfo->DaylightName) - -#undef GTZIFR_N -#undef GTZIFR_S - NtClose( hkey ); - return 1; + RtlInitUnicodeString(&nameW, Time_ZonesW); + if (NtOpenKey(&hkey, KEY_READ, &attr)) + { + WARN("Unable to open the time zones key\n"); + return; } - return 0; + + idx = 0; + nameW.Buffer = buf; + nameW.Length = sizeof(buf); + nameW.MaximumLength = sizeof(buf); + + while (!RtlpNtEnumerateSubKey(hkey, &nameW, idx++)) + { + static const WCHAR stdW[] = { 'S','t','d',0 }; + static const WCHAR dltW[] = { 'D','l','t',0 }; + static const WCHAR tziW[] = { 'T','Z','I',0 }; + RTL_TIME_ZONE_INFORMATION reg_tzi; + HANDLE hSubkey; + struct tz_reg_data + { + LONG bias; + LONG std_bias; + LONG dlt_bias; + RTL_SYSTEM_TIME std_date; + RTL_SYSTEM_TIME dlt_date; + } tz_data; + + attr.Length = sizeof(attr); + attr.RootDirectory = hkey; + attr.ObjectName = &nameW; + attr.Attributes = 0; + attr.SecurityDescriptor = NULL; + attr.SecurityQualityOfService = NULL; + if (NtOpenKey(&hSubkey, KEY_READ, &attr)) + { + WARN("Unable to open subkey %s\n", debugstr_wn(nameW.Buffer, nameW.Length/sizeof(WCHAR))); + continue; + } + +#define get_value(hkey, name, type, data, len) \ + if (!reg_query_value(hkey, name, type, data, len)) \ + { \ + WARN("can't read data from %s\n", debugstr_w(name)); \ + NtClose(hkey); \ + continue; \ + } + + get_value(hSubkey, stdW, REG_SZ, reg_tzi.StandardName, sizeof(reg_tzi.StandardName)); + get_value(hSubkey, dltW, REG_SZ, reg_tzi.DaylightName, sizeof(reg_tzi.DaylightName)); + get_value(hSubkey, tziW, REG_BINARY, &tz_data, sizeof(tz_data)); + +#undef get_value + + reg_tzi.Bias = tz_data.bias; + reg_tzi.StandardBias = tz_data.std_bias; + reg_tzi.DaylightBias = tz_data.dlt_bias; + reg_tzi.StandardDate = tz_data.std_date; + reg_tzi.DaylightDate = tz_data.dlt_date; + + TRACE("%s: bias %d\n", debugstr_wn(nameW.Buffer, nameW.Length/sizeof(WCHAR)), reg_tzi.Bias); + TRACE("std (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", + reg_tzi.StandardDate.wDay, reg_tzi.StandardDate.wMonth, + reg_tzi.StandardDate.wYear, reg_tzi.StandardDate.wDayOfWeek, + reg_tzi.StandardDate.wHour, reg_tzi.StandardDate.wMinute, + reg_tzi.StandardDate.wSecond, reg_tzi.StandardDate.wMilliseconds, + reg_tzi.StandardBias); + TRACE("dst (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", + reg_tzi.DaylightDate.wDay, reg_tzi.DaylightDate.wMonth, + reg_tzi.DaylightDate.wYear, reg_tzi.DaylightDate.wDayOfWeek, + reg_tzi.DaylightDate.wHour, reg_tzi.DaylightDate.wMinute, + reg_tzi.DaylightDate.wSecond, reg_tzi.DaylightDate.wMilliseconds, + reg_tzi.DaylightBias); + + NtClose(hSubkey); + + if (match_tz_info(tzi, ®_tzi)) + { + memcpy(tzi, ®_tzi, sizeof(*tzi)); + NtClose(hkey); + return; + } + + /* reset len */ + nameW.Length = sizeof(buf); + nameW.MaximumLength = sizeof(buf); + } + + NtClose(hkey); + + FIXME("Can't find matching timezone information in the registry for " + "bias %d, std (d/m/y): %u/%02u/%04u, dlt (d/m/y): %u/%02u/%04u\n", + tzi->Bias, + tzi->StandardDate.wDay, tzi->StandardDate.wMonth, tzi->StandardDate.wYear, + tzi->DaylightDate.wDay, tzi->DaylightDate.wMonth, tzi->DaylightDate.wYear); +} + +static time_t find_dst_change(unsigned long min, unsigned long max, int *is_dst) +{ + time_t start; + struct tm *tm; + + start = min; + tm = localtime(&start); + *is_dst = !tm->tm_isdst; + TRACE("starting date isdst %d, %s", !*is_dst, ctime(&start)); + + while (min <= max) + { + time_t pos = (min + max) / 2; + tm = localtime(&pos); + + if (tm->tm_isdst != *is_dst) + min = pos + 1; + else + max = pos - 1; + } + return min; +} + +static void init_tz_info(RTL_TIME_ZONE_INFORMATION *tzi, int *valid_year) +{ + struct tm *tm; + time_t year_start, year_end, tmp, dlt = 0, std = 0; + int is_dst; + + year_start = time(NULL); + tm = localtime(&year_start); + + if (*valid_year == tm->tm_year) return; + + memset(tzi, 0, sizeof(*tzi)); + + TRACE("tz data will be valid through year %d\n", tm->tm_year + 1900); + *valid_year = tm->tm_year; + + tm->tm_isdst = 0; + tm->tm_mday = 1; + tm->tm_mon = tm->tm_hour = tm->tm_min = tm->tm_sec = tm->tm_wday = tm->tm_yday = 0; + year_start = mktime(tm); + TRACE("year_start: %s", ctime(&year_start)); + + tm->tm_mday = tm->tm_wday = tm->tm_yday = 0; + tm->tm_mon = 12; + tm->tm_hour = 23; + tm->tm_min = tm->tm_sec = 59; + year_end = mktime(tm); + TRACE("year_end: %s", ctime(&year_end)); + + tm = gmtime(&year_start); + tzi->Bias = (LONG)(mktime(tm) - year_start) / 60; + TRACE("bias: %d\n", tzi->Bias); + + tmp = find_dst_change(year_start, year_end, &is_dst); + if (is_dst) + dlt = tmp; + else + std = tmp; + + tmp = find_dst_change(tmp, year_end, &is_dst); + if (is_dst) + dlt = tmp; + else + std = tmp; + + TRACE("std: %s", ctime(&std)); + TRACE("dlt: %s", ctime(&dlt)); + + if (dlt == std || !dlt || !std) + { + TRACE("there is no daylight saving rules in this time zone\n"); + return; + } + + tmp = dlt - tzi->Bias * 60; + tm = gmtime(&tmp); + TRACE("dlt gmtime: %s", asctime(tm)); + + tzi->DaylightBias = -60; + tzi->DaylightDate.wYear = tm->tm_year + 1900; + tzi->DaylightDate.wMonth = tm->tm_mon + 1; + tzi->DaylightDate.wDayOfWeek = tm->tm_wday; + tzi->DaylightDate.wDay = tm->tm_mday; + tzi->DaylightDate.wHour = tm->tm_hour; + tzi->DaylightDate.wMinute = tm->tm_min; + tzi->DaylightDate.wSecond = tm->tm_sec; + tzi->DaylightDate.wMilliseconds = 0; + + TRACE("daylight (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", + tzi->DaylightDate.wDay, tzi->DaylightDate.wMonth, + tzi->DaylightDate.wYear, tzi->DaylightDate.wDayOfWeek, + tzi->DaylightDate.wHour, tzi->DaylightDate.wMinute, + tzi->DaylightDate.wSecond, tzi->DaylightDate.wMilliseconds, + tzi->DaylightBias); + + tmp = std - tzi->Bias * 60 - tzi->DaylightBias * 60; + tm = gmtime(&tmp); + TRACE("std gmtime: %s", asctime(tm)); + + tzi->StandardBias = 0; + tzi->StandardDate.wYear = tm->tm_year + 1900; + tzi->StandardDate.wMonth = tm->tm_mon + 1; + tzi->StandardDate.wDayOfWeek = tm->tm_wday; + tzi->StandardDate.wDay = tm->tm_mday; + tzi->StandardDate.wHour = tm->tm_hour; + tzi->StandardDate.wMinute = tm->tm_min; + tzi->StandardDate.wSecond = tm->tm_sec; + tzi->StandardDate.wMilliseconds = 0; + + TRACE("standard (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", + tzi->StandardDate.wDay, tzi->StandardDate.wMonth, + tzi->StandardDate.wYear, tzi->StandardDate.wDayOfWeek, + tzi->StandardDate.wHour, tzi->StandardDate.wMinute, + tzi->StandardDate.wSecond, tzi->StandardDate.wMilliseconds, + tzi->StandardBias); + + find_reg_tz_info(tzi); } /*********************************************************************** @@ -974,28 +844,19 @@ static int TIME_GetTimeZoneInfoFromReg(RTL_TIME_ZONE_INFORMATION *tzinfo) */ NTSTATUS WINAPI RtlQueryTimeZoneInformation(RTL_TIME_ZONE_INFORMATION *tzinfo) { - time_t gmt; - int bias, daylight; - const WCHAR *psTZ; + static RTL_TIME_ZONE_INFORMATION *cached_tzi; + static int current_year = -1; - memset(tzinfo, 0, sizeof(RTL_TIME_ZONE_INFORMATION)); + RtlEnterCriticalSection(&TIME_tz_section); - if( !TIME_GetTimeZoneInfoFromReg(tzinfo)) - { - WARN("TIME_GetTimeZoneInfoFromReg failed\n"); + if (!cached_tzi) + cached_tzi = RtlAllocateHeap(GetProcessHeap(), 0, sizeof(*cached_tzi)); - gmt = time(NULL); - bias = TIME_GetBias(gmt, &daylight); - TRACE("bias %d, daylight %d\n", -bias/60, daylight); + init_tz_info(cached_tzi, ¤t_year); + *tzinfo = *cached_tzi; + + RtlLeaveCriticalSection(&TIME_tz_section); - tzinfo->Bias = -bias / 60; - tzinfo->StandardBias = 0; - tzinfo->DaylightBias = -60; - tzinfo->StandardName[0]='\0'; - tzinfo->DaylightName[0]='\0'; - psTZ = TIME_GetTZAsStr (gmt, (-bias/60), daylight); - if (psTZ) strcpyW( tzinfo->StandardName, psTZ ); - } return STATUS_SUCCESS; } diff --git a/include/winternl.h b/include/winternl.h index d1764cdd6a4..541eb5835b9 100644 --- a/include/winternl.h +++ b/include/winternl.h @@ -2278,6 +2278,7 @@ NTSTATUS WINAPI RtlWalkHeap(HANDLE,PVOID); NTSTATUS WINAPI RtlWriteRegistryValue(ULONG,PCWSTR,PCWSTR,ULONG,PVOID,ULONG); NTSTATUS WINAPI RtlpNtCreateKey(PHANDLE,ACCESS_MASK,const OBJECT_ATTRIBUTES*,ULONG,const UNICODE_STRING*,ULONG,PULONG); +NTSTATUS WINAPI RtlpNtEnumerateSubKey(HANDLE,UNICODE_STRING *, ULONG); NTSTATUS WINAPI RtlpWaitForCriticalSection(RTL_CRITICAL_SECTION *); NTSTATUS WINAPI RtlpUnWaitCriticalSection(RTL_CRITICAL_SECTION *);