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ntdll: Move the timezone detection code to the Unix library. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-06-25 15:28:26 +02:00
parent 7161dcd426
commit 13c1f008c0
5 changed files with 440 additions and 454 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
dlls/ntdll/tests/time.c
View File

@ -29,6 +29,8 @@
static VOID (WINAPI *pRtlTimeToTimeFields)( const LARGE_INTEGER *liTime, PTIME_FIELDS TimeFields) ;
static VOID (WINAPI *pRtlTimeFieldsToTime)( PTIME_FIELDS TimeFields, PLARGE_INTEGER Time) ;
static NTSTATUS (WINAPI *pNtQueryPerformanceCounter)( LARGE_INTEGER *counter, LARGE_INTEGER *frequency );
static NTSTATUS (WINAPI *pNtQuerySystemInformation)( SYSTEM_INFORMATION_CLASS class,
void *info, ULONG size, ULONG *ret_size );
static NTSTATUS (WINAPI *pRtlQueryTimeZoneInformation)( RTL_TIME_ZONE_INFORMATION *);
static NTSTATUS (WINAPI *pRtlQueryDynamicTimeZoneInformation)( RTL_DYNAMIC_TIME_ZONE_INFORMATION *);
static BOOL (WINAPI *pRtlQueryUnbiasedInterruptTime)( ULONGLONG *time );
@ -122,18 +124,19 @@ static void test_NtQueryPerformanceCounter(void)
static void test_RtlQueryTimeZoneInformation(void)
{
RTL_DYNAMIC_TIME_ZONE_INFORMATION tzinfo;
RTL_DYNAMIC_TIME_ZONE_INFORMATION tzinfo, tzinfo2;
NTSTATUS status;
ULONG len;
/* test RtlQueryTimeZoneInformation returns an indirect string,
e.g. @tzres.dll,-32 (Vista or later) */
if (!pRtlQueryTimeZoneInformation || !pRtlQueryDynamicTimeZoneInformation)
{
win_skip("Time zone name tests requires Vista or later\n");
win_skip("Time zone name tests require Vista or later\n");
return;
}
memset(&tzinfo, 0, sizeof(tzinfo));
memset(&tzinfo, 0xcc, sizeof(tzinfo));
status = pRtlQueryDynamicTimeZoneInformation(&tzinfo);
ok(status == STATUS_SUCCESS,
"RtlQueryDynamicTimeZoneInformation failed, got %08x\n", status);
@ -144,7 +147,13 @@ static void test_RtlQueryTimeZoneInformation(void)
"daylight time zone name isn't an indirect string, got %s\n",
wine_dbgstr_w(tzinfo.DaylightName));
memset(&tzinfo, 0, sizeof(tzinfo));
memset(&tzinfo2, 0xcc, sizeof(tzinfo2));
status = pNtQuerySystemInformation( SystemDynamicTimeZoneInformation, &tzinfo2, sizeof(tzinfo2), &len );
ok( !status, "NtQuerySystemInformation failed %x\n", status );
ok( len == sizeof(tzinfo2), "wrong len %u\n", len );
ok( !memcmp( &tzinfo, &tzinfo2, sizeof(tzinfo2) ), "tz data is different\n" );
memset(&tzinfo, 0xcc, sizeof(tzinfo));
status = pRtlQueryTimeZoneInformation((RTL_TIME_ZONE_INFORMATION *)&tzinfo);
ok(status == STATUS_SUCCESS,
"RtlQueryTimeZoneInformation failed, got %08x\n", status);
@ -154,6 +163,24 @@ static void test_RtlQueryTimeZoneInformation(void)
ok(tzinfo.DaylightName[0] == '@',
"daylight time zone name isn't an indirect string, got %s\n",
wine_dbgstr_w(tzinfo.DaylightName));
memset(&tzinfo, 0xcc, sizeof(tzinfo));
status = pRtlQueryTimeZoneInformation((RTL_TIME_ZONE_INFORMATION *)&tzinfo);
ok(status == STATUS_SUCCESS,
"RtlQueryTimeZoneInformation failed, got %08x\n", status);
ok(tzinfo.StandardName[0] == '@',
"standard time zone name isn't an indirect string, got %s\n",
wine_dbgstr_w(tzinfo.StandardName));
ok(tzinfo.DaylightName[0] == '@',
"daylight time zone name isn't an indirect string, got %s\n",
wine_dbgstr_w(tzinfo.DaylightName));
memset(&tzinfo2, 0xcc, sizeof(tzinfo2));
status = pNtQuerySystemInformation( SystemTimeZoneInformation, &tzinfo2,
sizeof(RTL_TIME_ZONE_INFORMATION), &len );
ok( !status, "NtQuerySystemInformation failed %x\n", status );
ok( len == sizeof(RTL_TIME_ZONE_INFORMATION), "wrong len %u\n", len );
ok( !memcmp( &tzinfo, &tzinfo2, sizeof(RTL_TIME_ZONE_INFORMATION) ), "tz data is different\n" );
}
static ULONGLONG read_ksystem_time(volatile KSYSTEM_TIME *time)
@ -234,6 +261,7 @@ START_TEST(time)
pRtlTimeToTimeFields = (void *)GetProcAddress(mod,"RtlTimeToTimeFields");
pRtlTimeFieldsToTime = (void *)GetProcAddress(mod,"RtlTimeFieldsToTime");
pNtQueryPerformanceCounter = (void *)GetProcAddress(mod, "NtQueryPerformanceCounter");
pNtQuerySystemInformation = (void *)GetProcAddress(mod, "NtQuerySystemInformation");
pRtlQueryTimeZoneInformation =
(void *)GetProcAddress(mod, "RtlQueryTimeZoneInformation");
pRtlQueryDynamicTimeZoneInformation =

453
dlls/ntdll/time.c
View File

@ -51,23 +51,6 @@
WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
#define SHORT_TZ_NAME_MAX 8
struct tz_name_map {
WCHAR key_name[128];
char short_name[SHORT_TZ_NAME_MAX];
};
static int init_tz_info(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi);
static RTL_CRITICAL_SECTION TIME_tz_section;
static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &TIME_tz_section,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": TIME_tz_section") }
};
static RTL_CRITICAL_SECTION TIME_tz_section = { &critsect_debug, -1, 0, 0, 0, 0 };
#define TICKSPERSEC 10000000
#define TICKSPERMSEC 10000
#define SECSPERDAY 86400
@ -486,430 +469,6 @@ ULONG WINAPI DECLSPEC_HOTPATCH NtGetTickCount(void)
return user_shared_data->u.TickCount.LowPart;
}
/* 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
*
* Note: year, day and month must be in unix format.
*/
static int weekday_to_mday(int year, int day, int mon, int day_of_week)
{
struct tm date;
time_t tmp;
int wday, mday;
/* 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);
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;
}
static BOOL match_tz_date(const RTL_SYSTEM_TIME *st, const RTL_SYSTEM_TIME *reg_st)
{
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_DYNAMIC_TIME_ZONE_INFORMATION *tzi, const RTL_DYNAMIC_TIME_ZONE_INFORMATION *reg_tzi)
{
if (tzi->Bias == reg_tzi->Bias &&
match_tz_date(&tzi->StandardDate, &reg_tzi->StandardDate) &&
match_tz_date(&tzi->DaylightDate, &reg_tzi->DaylightDate))
return TRUE;
return FALSE;
}
static int compare_tz_key(const void *a, const void *b)
{
const struct tz_name_map *map_a, *map_b;
map_a = (const struct tz_name_map *)a;
map_b = (const struct tz_name_map *)b;
return wcscmp(map_a->key_name, map_b->key_name);
}
static BOOL match_tz_name(const char* tz_name,
const RTL_DYNAMIC_TIME_ZONE_INFORMATION *reg_tzi)
{
static const struct tz_name_map mapping[] = {
{ {'K','o','r','e','a',' ','S','t','a','n','d','a','r','d',' ','T','i',
'm','e',0 },
"KST" },
{ {'T','o','k','y','o',' ','S','t','a','n','d','a','r','d',' ','T','i',
'm','e',0 },
"JST" },
{ {'Y','a','k','u','t','s','k',' ','S','t','a','n','d','a','r','d',' ',
'T','i','m','e',0 },
"+09" }, /* YAKST was used until tzdata 2016f */
};
struct tz_name_map *match, key;
if (reg_tzi->DaylightDate.wMonth)
return TRUE;
wcscpy(key.key_name, reg_tzi->TimeZoneKeyName);
match = bsearch(&key, mapping, ARRAY_SIZE(mapping), sizeof(mapping[0]), compare_tz_key);
if (!match)
return TRUE;
return !strcmp(match->short_name, tz_name);
}
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_DYNAMIC_TIME_ZONE_INFORMATION *tzi, const char* tz_name, int year)
{
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 };
static const WCHAR Dynamic_DstW[] = { 'D','y','n','a','m','i','c',' ','D','S','T',0 };
static const WCHAR fmtW[] = { '%','d',0 };
HANDLE hkey;
ULONG idx;
OBJECT_ATTRIBUTES attr, attrDynamic;
UNICODE_STRING nameW, nameDynamicW;
WCHAR buf[128], yearW[16];
NTDLL_swprintf(yearW, fmtW, year);
attrDynamic.Length = sizeof(attrDynamic);
attrDynamic.RootDirectory = 0; /* will be replaced later */
attrDynamic.ObjectName = &nameDynamicW;
attrDynamic.Attributes = 0;
attrDynamic.SecurityDescriptor = NULL;
attrDynamic.SecurityQualityOfService = NULL;
RtlInitUnicodeString(&nameDynamicW, Dynamic_DstW);
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString(&nameW, Time_ZonesW);
if (NtOpenKey(&hkey, KEY_READ, &attr))
{
WARN("Unable to open the time zones key\n");
return;
}
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 mui_stdW[] = { 'M','U','I','_','S','t','d',0 };
static const WCHAR mui_dltW[] = { 'M','U','I','_','D','l','t',0 };
static const WCHAR tziW[] = { 'T','Z','I',0 };
RTL_DYNAMIC_TIME_ZONE_INFORMATION reg_tzi;
HANDLE hSubkey, hSubkeyDynamicDST;
BOOL is_dynamic = FALSE;
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; \
}
memset(&reg_tzi, 0, sizeof(reg_tzi));
if (!reg_query_value(hSubkey, mui_stdW, REG_SZ, reg_tzi.StandardName, sizeof(reg_tzi.StandardName)))
get_value(hSubkey, stdW, REG_SZ, reg_tzi.StandardName, sizeof(reg_tzi.StandardName));
if (!reg_query_value(hSubkey, mui_dltW, REG_SZ, reg_tzi.DaylightName, sizeof(reg_tzi.DaylightName)))
get_value(hSubkey, dltW, REG_SZ, reg_tzi.DaylightName, sizeof(reg_tzi.DaylightName));
memcpy(reg_tzi.TimeZoneKeyName, nameW.Buffer, nameW.Length);
reg_tzi.TimeZoneKeyName[nameW.Length/sizeof(WCHAR)] = 0;
/* Check for Dynamic DST entry first */
attrDynamic.RootDirectory = hSubkey;
if (!NtOpenKey(&hSubkeyDynamicDST, KEY_READ, &attrDynamic))
{
is_dynamic = reg_query_value(hSubkeyDynamicDST, yearW, REG_BINARY, &tz_data, sizeof(tz_data));
NtClose(hSubkeyDynamicDST);
}
if (!is_dynamic)
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, &reg_tzi)
&& match_tz_name(tz_name, &reg_tzi))
{
*tzi = reg_tzi;
NtClose(hkey);
return;
}
/* reset len */
nameW.Length = sizeof(buf);
nameW.MaximumLength = sizeof(buf);
}
NtClose(hkey);
if (idx == 1) return; /* registry info not initialized yet */
FIXME("Can't find matching timezone information in the registry for "
"%s, bias %d, std (d/m/y): %u/%02u/%04u, dlt (d/m/y): %u/%02u/%04u\n",
tz_name, 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 int init_tz_info(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi)
{
static RTL_DYNAMIC_TIME_ZONE_INFORMATION cached_tzi;
static int current_year = -1, current_bias = 65535;
struct tm *tm;
char tz_name[SHORT_TZ_NAME_MAX];
time_t year_start, year_end, tmp, dlt = 0, std = 0;
int is_dst, current_is_dst, bias;
RtlEnterCriticalSection( &TIME_tz_section );
year_start = time(NULL);
tm = gmtime(&year_start);
bias = (LONG)(mktime(tm) - year_start) / 60;
tm = localtime(&year_start);
current_is_dst = tm->tm_isdst;
if (current_year == tm->tm_year && current_bias == bias)
{
*tzi = cached_tzi;
RtlLeaveCriticalSection( &TIME_tz_section );
return current_is_dst;
}
memset(tzi, 0, sizeof(*tzi));
if (!strftime(tz_name, sizeof(tz_name), "%Z", tm)) {
/* not enough room or another error */
tz_name[0] = '\0';
}
TRACE("tz data will be valid through year %d, bias %d\n", tm->tm_year + 1900, bias);
current_year = tm->tm_year;
current_bias = bias;
tzi->Bias = bias;
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));
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");
else
{
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, tz_name, current_year + 1900);
cached_tzi = *tzi;
RtlLeaveCriticalSection( &TIME_tz_section );
return current_is_dst;
}
/***********************************************************************
* RtlQueryTimeZoneInformation [NTDLL.@]
*
@ -924,11 +483,7 @@ static int init_tz_info(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi)
*/
NTSTATUS WINAPI RtlQueryTimeZoneInformation(RTL_TIME_ZONE_INFORMATION *ret)
{
RTL_DYNAMIC_TIME_ZONE_INFORMATION tzinfo;
init_tz_info( &tzinfo );
memcpy( ret, &tzinfo, sizeof(*ret) );
return STATUS_SUCCESS;
return NtQuerySystemInformation( SystemTimeZoneInformation, ret, sizeof(*ret), NULL );
}
/***********************************************************************
@ -943,11 +498,9 @@ NTSTATUS WINAPI RtlQueryTimeZoneInformation(RTL_TIME_ZONE_INFORMATION *ret)
* Success: STATUS_SUCCESS.
* Failure: An NTSTATUS error code indicating the problem.
*/
NTSTATUS WINAPI RtlQueryDynamicTimeZoneInformation(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzinfo)
NTSTATUS WINAPI RtlQueryDynamicTimeZoneInformation(RTL_DYNAMIC_TIME_ZONE_INFORMATION *ret)
{
init_tz_info( tzinfo );
return STATUS_SUCCESS;
return NtQuerySystemInformation( SystemDynamicTimeZoneInformation, ret, sizeof(*ret), NULL );
}
/***********************************************************************

398
dlls/ntdll/unix/system.c
View File

@ -1631,6 +1631,374 @@ static void get_performance_info( SYSTEM_PERFORMANCE_INFORMATION *info )
}
/* 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
*
* Note: year, day and month must be in unix format.
*/
static int weekday_to_mday(int year, int day, int mon, int day_of_week)
{
struct tm date;
time_t tmp;
int wday, mday;
/* 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);
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;
}
static BOOL match_tz_date( const RTL_SYSTEM_TIME *st, const RTL_SYSTEM_TIME *reg_st )
{
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);
return (st->wDay == wDay &&
st->wHour == reg_st->wHour &&
st->wMinute == reg_st->wMinute &&
st->wSecond == reg_st->wSecond &&
st->wMilliseconds == reg_st->wMilliseconds);
}
static BOOL match_tz_info( const RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi,
const RTL_DYNAMIC_TIME_ZONE_INFORMATION *reg_tzi )
{
return (tzi->Bias == reg_tzi->Bias &&
match_tz_date(&tzi->StandardDate, &reg_tzi->StandardDate) &&
match_tz_date(&tzi->DaylightDate, &reg_tzi->DaylightDate));
}
static BOOL match_tz_name( const char *tz_name, const RTL_DYNAMIC_TIME_ZONE_INFORMATION *reg_tzi )
{
static const struct { WCHAR key_name[32]; const char *short_name; } mapping[] =
{
{ {'K','o','r','e','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',0 },
"KST" },
{ {'T','o','k','y','o',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',0 },
"JST" },
{ {'Y','a','k','u','t','s','k',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',0 },
"+09" }, /* YAKST was used until tzdata 2016f */
};
unsigned int i;
if (reg_tzi->DaylightDate.wMonth) return TRUE;
for (i = 0; i < ARRAY_SIZE(mapping); i++)
{
if (!wcscmp( mapping[i].key_name, reg_tzi->TimeZoneKeyName ))
return !strcmp( mapping[i].short_name, tz_name );
}
return TRUE;
}
static BOOL reg_query_value( HKEY key, LPCWSTR name, DWORD type, void *data, DWORD count )
{
char buf[256];
UNICODE_STRING nameW;
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( key, &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_DYNAMIC_TIME_ZONE_INFORMATION *tzi, const char* tz_name, int year)
{
static const WCHAR stdW[] = { 'S','t','d',0 };
static const WCHAR dltW[] = { 'D','l','t',0 };
static const WCHAR mui_stdW[] = { 'M','U','I','_','S','t','d',0 };
static const WCHAR mui_dltW[] = { 'M','U','I','_','D','l','t',0 };
static const WCHAR tziW[] = { 'T','Z','I',0 };
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 };
static const WCHAR Dynamic_DstW[] = { 'D','y','n','a','m','i','c',' ','D','S','T',0 };
RTL_DYNAMIC_TIME_ZONE_INFORMATION reg_tzi;
HANDLE key, subkey, subkey_dyn = 0;
ULONG idx, len;
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW, nameDynamicW;
WCHAR yearW[16];
char buffer[128];
KEY_BASIC_INFORMATION *info = (KEY_BASIC_INFORMATION *)buffer;
sprintf( buffer, "%u", year );
ascii_to_unicode( yearW, buffer, strlen(buffer) + 1 );
RtlInitUnicodeString( &nameW, Time_ZonesW );
RtlInitUnicodeString( &nameDynamicW, Dynamic_DstW );
InitializeObjectAttributes( &attr, &nameW, 0, 0, NULL );
if (NtOpenKey( &key, KEY_READ, &attr )) return;
idx = 0;
while (!NtEnumerateKey( key, idx++, KeyBasicInformation, buffer, sizeof(buffer), &len ))
{
struct tz_reg_data
{
LONG bias;
LONG std_bias;
LONG dlt_bias;
RTL_SYSTEM_TIME std_date;
RTL_SYSTEM_TIME dlt_date;
} tz_data;
BOOL is_dynamic = FALSE;
nameW.Buffer = info->Name;
nameW.Length = info->NameLength;
InitializeObjectAttributes( &attr, &nameW, 0, key, NULL );
if (NtOpenKey( &subkey, KEY_READ, &attr )) continue;
memset( &reg_tzi, 0, sizeof(reg_tzi) );
memcpy(reg_tzi.TimeZoneKeyName, nameW.Buffer, nameW.Length);
reg_tzi.TimeZoneKeyName[nameW.Length/sizeof(WCHAR)] = 0;
if (!reg_query_value(subkey, mui_stdW, REG_SZ, reg_tzi.StandardName, sizeof(reg_tzi.StandardName)) &&
!reg_query_value(subkey, stdW, REG_SZ, reg_tzi.StandardName, sizeof(reg_tzi.StandardName)))
goto next;
if (!reg_query_value(subkey, mui_dltW, REG_SZ, reg_tzi.DaylightName, sizeof(reg_tzi.DaylightName)) &&
!reg_query_value(subkey, dltW, REG_SZ, reg_tzi.DaylightName, sizeof(reg_tzi.DaylightName)))
goto next;
/* Check for Dynamic DST entry first */
InitializeObjectAttributes( &attr, &nameDynamicW, 0, subkey, NULL );
if (!NtOpenKey( &subkey_dyn, KEY_READ, &attr ))
{
is_dynamic = reg_query_value( subkey_dyn, yearW, REG_BINARY, &tz_data, sizeof(tz_data) );
NtClose( subkey_dyn );
}
if (!is_dynamic && !reg_query_value( subkey, tziW, REG_BINARY, &tz_data, sizeof(tz_data) ))
goto next;
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_us(&nameW), 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);
if (match_tz_info( tzi, &reg_tzi ) && match_tz_name( tz_name, &reg_tzi ))
{
*tzi = reg_tzi;
NtClose( subkey );
NtClose( key );
return;
}
next:
NtClose( subkey );
}
NtClose( key );
if (idx == 1) return; /* registry info not initialized yet */
FIXME("Can't find matching timezone information in the registry for "
"%s, bias %d, std (d/m/y): %u/%02u/%04u, dlt (d/m/y): %u/%02u/%04u\n",
tz_name, 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 RTL_CRITICAL_SECTION TIME_tz_section;
static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &TIME_tz_section,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": TIME_tz_section") }
};
static RTL_CRITICAL_SECTION TIME_tz_section = { &critsect_debug, -1, 0, 0, 0, 0 };
static void get_timezone_info( RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi )
{
static RTL_DYNAMIC_TIME_ZONE_INFORMATION cached_tzi;
static int current_year = -1, current_bias = 65535;
struct tm *tm;
char tz_name[16];
time_t year_start, year_end, tmp, dlt = 0, std = 0;
int is_dst, bias;
RtlEnterCriticalSection( &TIME_tz_section );
year_start = time(NULL);
tm = gmtime(&year_start);
bias = (LONG)(mktime(tm) - year_start) / 60;
tm = localtime(&year_start);
if (current_year == tm->tm_year && current_bias == bias)
{
*tzi = cached_tzi;
RtlLeaveCriticalSection( &TIME_tz_section );
return;
}
memset(tzi, 0, sizeof(*tzi));
if (!strftime(tz_name, sizeof(tz_name), "%Z", tm)) {
/* not enough room or another error */
tz_name[0] = '\0';
}
TRACE("tz data will be valid through year %d, bias %d\n", tm->tm_year + 1900, bias);
current_year = tm->tm_year;
current_bias = bias;
tzi->Bias = bias;
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));
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");
else
{
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, tz_name, current_year + 1900);
cached_tzi = *tzi;
RtlLeaveCriticalSection( &TIME_tz_section );
}
/******************************************************************************
* NtQuerySystemInformation (NTDLL.@)
*/
@ -2080,6 +2448,21 @@ NTSTATUS WINAPI NtQuerySystemInformation( SYSTEM_INFORMATION_CLASS class,
break;
}
case SystemTimeZoneInformation:
{
RTL_DYNAMIC_TIME_ZONE_INFORMATION tz;
get_timezone_info( &tz );
len = sizeof(RTL_TIME_ZONE_INFORMATION);
if (size >= len)
{
if (!info) ret = STATUS_ACCESS_VIOLATION;
else memcpy( info, &tz, len);
}
else ret = STATUS_INFO_LENGTH_MISMATCH;
break;
}
case SystemLogicalProcessorInformation:
{
SYSTEM_LOGICAL_PROCESSOR_INFORMATION *buf;
@ -2153,6 +2536,21 @@ NTSTATUS WINAPI NtQuerySystemInformation( SYSTEM_INFORMATION_CLASS class,
break;
}
case SystemDynamicTimeZoneInformation:
{
RTL_DYNAMIC_TIME_ZONE_INFORMATION tz;
get_timezone_info( &tz );
len = sizeof(tz);
if (size >= len)
{
if (!info) ret = STATUS_ACCESS_VIOLATION;
else memcpy( info, &tz, len);
}
else ret = STATUS_INFO_LENGTH_MISMATCH;
break;
}
default:
FIXME( "(0x%08x,%p,0x%08x,%p) stub\n", class, info, size, ret_size );

6
dlls/ntdll/unix/unix_private.h
View File

@ -244,6 +244,12 @@ static inline const char *debugstr_us( const UNICODE_STRING *us )
return debugstr_wn( us->Buffer, us->Length / sizeof(WCHAR) );
}
/* convert from straight ASCII to Unicode without depending on the current codepage */
static inline void ascii_to_unicode( WCHAR *dst, const char *src, size_t len )
{
while (len--) *dst++ = (unsigned char)*src++;
}
static inline size_t ntdll_wcslen( const WCHAR *str )
{
const WCHAR *s = str;

1
include/winternl.h
View File

@ -986,6 +986,7 @@ typedef enum _SYSTEM_INFORMATION_CLASS {
SystemSuperfetchInformation = 79,
SystemMemoryListInformation = 80,
SystemFileCacheInformationEx = 81,
SystemDynamicTimeZoneInformation = 102,
SystemLogicalProcessorInformationEx = 107,
SystemInformationClassMax
} SYSTEM_INFORMATION_CLASS, *PSYSTEM_INFORMATION_CLASS;