[winpr,timezone] Fix GetDynamicTimeZoneInformation
* Improve logging, use single function to dump data. * Use GetDynamicTimeZoneInformation as man getter, GetTimeZoneInformation only retrieves a subset.
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akallabeth
parent
9b89d8fa23
commit
3c4c827358
@ -414,6 +414,8 @@ static BOOL rdp_read_extended_info_packet(rdpRdp* rdp, wStream* s)
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if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
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return FALSE;
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if (freerdp_settings_get_bool(settings, FreeRDP_SupportDynamicTimeZone))
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{
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UINT16 cbDynamicDSTTimeZoneKeyName = 0;
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@ -534,88 +534,132 @@ static LONG get_bias(const struct tm* start, BOOL dstBias)
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return 0;
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}
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static BOOL map_iana_id(const char* iana, LPTIME_ZONE_INFORMATION tz)
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static BOOL map_iana_id(const char* iana, LPDYNAMIC_TIME_ZONE_INFORMATION tz)
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{
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const char* winId = TimeZoneIanaToWindows(iana, TIME_ZONE_NAME_ID);
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if (!winId)
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return FALSE;
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const char* winStd = TimeZoneIanaToWindows(iana, TIME_ZONE_NAME_STANDARD);
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const char* winDst = TimeZoneIanaToWindows(iana, TIME_ZONE_NAME_DAYLIGHT);
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ConvertUtf8ToWChar(winStd, tz->StandardName, ARRAYSIZE(tz->StandardName));
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ConvertUtf8ToWChar(winDst, tz->DaylightName, ARRAYSIZE(tz->DaylightName));
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if (winStd)
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ConvertUtf8ToWChar(winStd, tz->StandardName, ARRAYSIZE(tz->StandardName));
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if (winDst)
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ConvertUtf8ToWChar(winDst, tz->DaylightName, ARRAYSIZE(tz->DaylightName));
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if (winId)
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ConvertUtf8ToWChar(winId, tz->TimeZoneKeyName, ARRAYSIZE(tz->TimeZoneKeyName));
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return TRUE;
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return winId != NULL;
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}
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static const char* weekday2str(WORD wDayOfWeek)
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{
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switch (wDayOfWeek)
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{
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case 0:
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return "SUNDAY";
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case 1:
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return "MONDAY";
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case 2:
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return "TUESDAY";
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case 3:
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return "WEDNESDAY";
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case 4:
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return "THURSDAY";
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case 5:
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return "FRIDAY";
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case 6:
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return "SATURDAY";
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default:
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return "DAY-OF-MAGIC";
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}
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}
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static char* systemtime2str(const SYSTEMTIME* t, char* buffer, size_t len)
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{
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const SYSTEMTIME empty = { 0 };
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if (memcmp(t, &empty, sizeof(SYSTEMTIME)) == 0)
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_snprintf(buffer, len, "{ not set }");
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else
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{
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_snprintf(buffer, len,
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"{ %" PRIu16 "-%" PRIu16 "-%" PRIu16 " [%s] %" PRIu16 ":%" PRIu16 ":%" PRIu16
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".%" PRIu16 "}",
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t->wYear, t->wMonth, t->wDay, weekday2str(t->wDayOfWeek), t->wHour, t->wMinute,
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t->wSecond, t->wMilliseconds);
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}
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return buffer;
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}
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static void log_print(wLog* log, DWORD level, const char* file, const char* fkt, size_t line, ...)
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{
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if (!WLog_IsLevelActive(log, level))
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return;
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va_list ap;
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va_start(ap, line);
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WLog_PrintMessageVA(log, WLOG_MESSAGE_TEXT, level, line, file, fkt, ap);
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va_end(ap);
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}
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#define log_timezone(tzif, result) log_timezone_((tzif), (result), __FILE__, __func__, __LINE__)
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static void log_timezone_(const DYNAMIC_TIME_ZONE_INFORMATION* tzif, DWORD result, const char* file,
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const char* fkt, size_t line)
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{
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WINPR_ASSERT(tzif);
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char buffer[130] = { 0 };
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DWORD level = WLOG_INFO;
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wLog* log = WLog_Get(TAG);
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log_print(log, level, file, fkt, line, "DYNAMIC_TIME_ZONE_INFORMATION {");
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log_print(log, level, file, fkt, line, " Bias=%" PRIu32, tzif->Bias);
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ConvertWCharNToUtf8(tzif->StandardName, ARRAYSIZE(tzif->StandardName), buffer,
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ARRAYSIZE(buffer));
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log_print(log, level, file, fkt, line, " StandardName=%s", buffer);
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log_print(log, level, file, fkt, line, " StandardDate=%s",
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systemtime2str(&tzif->StandardDate, buffer, sizeof(buffer)));
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log_print(log, level, file, fkt, line, " StandardBias=%" PRIu32, tzif->StandardBias);
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ConvertWCharNToUtf8(tzif->DaylightName, ARRAYSIZE(tzif->DaylightName), buffer,
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ARRAYSIZE(buffer));
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log_print(log, level, file, fkt, line, " DaylightName=%s", buffer);
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log_print(log, level, file, fkt, line, " DaylightDate=%s",
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systemtime2str(&tzif->DaylightDate, buffer, sizeof(buffer)));
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log_print(log, level, file, fkt, line, " DaylightBias=%" PRIu32, tzif->DaylightBias);
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ConvertWCharNToUtf8(tzif->TimeZoneKeyName, ARRAYSIZE(tzif->TimeZoneKeyName), buffer,
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ARRAYSIZE(buffer));
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log_print(log, level, file, fkt, line, " TimeZoneKeyName=%s", buffer);
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log_print(log, level, file, fkt, line, " DynamicDaylightTimeDisabled=DST-%s",
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tzif->DynamicDaylightTimeDisabled ? "disabled" : "enabled");
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switch (result)
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{
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case TIME_ZONE_ID_DAYLIGHT:
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log_print(log, level, file, fkt, line, " DaylightDate in use");
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break;
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case TIME_ZONE_ID_STANDARD:
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log_print(log, level, file, fkt, line, " StandardDate in use");
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break;
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default:
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log_print(log, level, file, fkt, line, " UnknownDate in use");
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break;
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}
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log_print(log, level, file, fkt, line, "}");
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}
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DWORD GetTimeZoneInformation(LPTIME_ZONE_INFORMATION lpTimeZoneInformation)
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{
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const char** list = NULL;
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char* tzid = NULL;
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const char* defaultName = "Client Local Time";
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DWORD res = TIME_ZONE_ID_UNKNOWN;
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const TIME_ZONE_INFORMATION empty = { 0 };
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LPTIME_ZONE_INFORMATION tz = lpTimeZoneInformation;
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WINPR_ASSERT(tz);
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*tz = empty;
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ConvertUtf8ToWChar(defaultName, tz->StandardName, ARRAYSIZE(tz->StandardName));
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const time_t t = time(NULL);
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struct tm tres = { 0 };
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struct tm* local_time = localtime_r(&t, &tres);
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if (!local_time)
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goto out_error;
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tz->Bias = get_bias(local_time, FALSE);
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if (local_time->tm_isdst >= 0)
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{
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/* DST bias is the difference between standard time and DST in minutes */
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const LONG d = get_bias(local_time, TRUE);
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tz->DaylightBias = -1 * labs(tz->Bias - d);
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get_transition_date(local_time, FALSE, &tz->StandardDate);
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get_transition_date(local_time, TRUE, &tz->DaylightDate);
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}
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tzid = winpr_guess_time_zone();
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if (!map_iana_id(tzid, tz))
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{
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const size_t len = TimeZoneIanaAbbrevGet(local_time->tm_zone, NULL, 0);
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list = calloc(len, sizeof(char*));
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if (!list)
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goto out_error;
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const size_t size = TimeZoneIanaAbbrevGet(local_time->tm_zone, list, len);
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for (size_t x = 0; x < size; x++)
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{
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const char* id = list[x];
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if (map_iana_id(id, tz))
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{
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res = (local_time->tm_isdst) ? TIME_ZONE_ID_DAYLIGHT : TIME_ZONE_ID_STANDARD;
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break;
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}
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}
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}
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else
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res = (local_time->tm_isdst) ? TIME_ZONE_ID_DAYLIGHT : TIME_ZONE_ID_STANDARD;
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out_error:
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free(tzid);
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free(list);
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switch (res)
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{
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case TIME_ZONE_ID_DAYLIGHT:
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case TIME_ZONE_ID_STANDARD:
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WLog_DBG(TAG, "tz: Bias=%" PRId32 " sn='%s' dln='%s'", tz->Bias, tz->StandardName,
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tz->DaylightName);
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break;
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default:
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WLog_DBG(TAG, "tz not found, using computed bias %" PRId32 ".", tz->Bias);
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break;
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}
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return res;
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DYNAMIC_TIME_ZONE_INFORMATION dyn = { 0 };
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DWORD rc = GetDynamicTimeZoneInformation(&dyn);
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lpTimeZoneInformation->Bias = dyn.Bias;
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lpTimeZoneInformation->DaylightBias = dyn.DaylightBias;
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lpTimeZoneInformation->DaylightDate = dyn.DaylightDate;
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lpTimeZoneInformation->StandardBias = dyn.StandardBias;
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lpTimeZoneInformation->StandardDate = dyn.StandardDate;
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memcpy(lpTimeZoneInformation->StandardName, dyn.StandardName,
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sizeof(lpTimeZoneInformation->StandardName));
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memcpy(lpTimeZoneInformation->DaylightName, dyn.DaylightName,
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sizeof(lpTimeZoneInformation->DaylightName));
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return rc;
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}
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BOOL SetTimeZoneInformation(const TIME_ZONE_INFORMATION* lpTimeZoneInformation)
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@ -666,30 +710,72 @@ BOOL TzSpecificLocalTimeToSystemTime(LPTIME_ZONE_INFORMATION lpTimeZoneInformati
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(defined(_WIN32) && (defined(NTDDI_WIN8) && _WIN32_WINNT < 0x0600 || \
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!defined(NTDDI_WIN8) && _WIN32_WINNT < 0x0501)) /* Windows Vista */
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DWORD GetDynamicTimeZoneInformation(PDYNAMIC_TIME_ZONE_INFORMATION pTimeZoneInformation)
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DWORD GetDynamicTimeZoneInformation(PDYNAMIC_TIME_ZONE_INFORMATION tz)
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{
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TIME_ZONE_INFORMATION tz = { 0 };
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const DWORD rc = GetTimeZoneInformation(&tz);
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BOOL doesNotHaveStandardDate = FALSE;
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BOOL doesNotHaveDaylightDate = FALSE;
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const char** list = NULL;
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char* tzid = NULL;
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const char* defaultName = "Client Local Time";
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DWORD res = TIME_ZONE_ID_UNKNOWN;
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const DYNAMIC_TIME_ZONE_INFORMATION empty = { 0 };
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WINPR_ASSERT(pTimeZoneInformation);
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pTimeZoneInformation->Bias = tz.Bias;
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memcpy(pTimeZoneInformation->StandardName, tz.StandardName,
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MIN(sizeof(tz.StandardName), sizeof(pTimeZoneInformation->StandardName)));
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pTimeZoneInformation->StandardDate = tz.StandardDate;
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pTimeZoneInformation->StandardBias = tz.StandardBias;
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WINPR_ASSERT(tz);
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memcpy(pTimeZoneInformation->DaylightName, tz.DaylightName,
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MIN(sizeof(tz.DaylightName), sizeof(pTimeZoneInformation->DaylightName)));
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pTimeZoneInformation->DaylightDate = tz.DaylightDate;
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pTimeZoneInformation->DaylightBias = tz.DaylightBias;
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*tz = empty;
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ConvertUtf8ToWChar(defaultName, tz->StandardName, ARRAYSIZE(tz->StandardName));
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memcpy(pTimeZoneInformation->TimeZoneKeyName, tz.StandardName,
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MIN(sizeof(tz.StandardName), sizeof(pTimeZoneInformation->TimeZoneKeyName)));
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const time_t t = time(NULL);
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struct tm tres = { 0 };
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struct tm* local_time = localtime_r(&t, &tres);
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if (!local_time)
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goto out_error;
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/* https://learn.microsoft.com/en-us/windows/win32/api/timezoneapi/ns-timezoneapi-dynamic_time_zone_information
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*/
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pTimeZoneInformation->DynamicDaylightTimeDisabled = FALSE;
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return rc;
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tz->Bias = get_bias(local_time, FALSE);
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if (local_time->tm_isdst >= 0)
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{
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/* DST bias is the difference between standard time and DST in minutes */
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const LONG d = get_bias(local_time, TRUE);
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tz->DaylightBias = -1 * labs(tz->Bias - d);
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if (!get_transition_date(local_time, FALSE, &tz->StandardDate))
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doesNotHaveStandardDate = TRUE;
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if (!get_transition_date(local_time, TRUE, &tz->DaylightDate))
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doesNotHaveDaylightDate = TRUE;
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}
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tzid = winpr_guess_time_zone();
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if (!map_iana_id(tzid, tz))
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{
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const size_t len = TimeZoneIanaAbbrevGet(local_time->tm_zone, NULL, 0);
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list = calloc(len, sizeof(char*));
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if (!list)
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goto out_error;
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const size_t size = TimeZoneIanaAbbrevGet(local_time->tm_zone, list, len);
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for (size_t x = 0; x < size; x++)
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{
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const char* id = list[x];
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if (map_iana_id(id, tz))
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{
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res = (local_time->tm_isdst) ? TIME_ZONE_ID_DAYLIGHT : TIME_ZONE_ID_STANDARD;
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break;
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}
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}
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}
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else
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res = (local_time->tm_isdst) ? TIME_ZONE_ID_DAYLIGHT : TIME_ZONE_ID_STANDARD;
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if (doesNotHaveDaylightDate)
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tz->DaylightBias = 0;
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if (doesNotHaveStandardDate)
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tz->StandardBias = 0;
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out_error:
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free(tzid);
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free(list);
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log_timezone(tz, res);
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return res;
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}
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BOOL SetDynamicTimeZoneInformation(const DYNAMIC_TIME_ZONE_INFORMATION* lpTimeZoneInformation)
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