BOOL rdp_write_client_time_zone(wStream* s, rdpSettings* settings)
{
LPTIME_ZONE_INFORMATION tz;
DWORD rc;
tz = settings->ClientTimeZone;
if (!tz)
return FALSE;
rc = GetTimeZoneInformation(tz);
/* Bias */
Stream_Write_UINT32(s, tz->Bias);
/* standardName (64 bytes) */
Stream_Write(s, tz->StandardName, sizeof(tz->StandardName));
/* StandardDate */
rdp_write_system_time(s, &tz->StandardDate);
DEBUG_TIMEZONE("bias=%d stdName='%s' dlName='%s'", tz->Bias,
tz->StandardName, tz->DaylightName);
/* Note that StandardBias is ignored if no valid standardDate is provided. */
/* StandardBias */
Stream_Write_UINT32(s, tz->StandardBias);
DEBUG_TIMEZONE("StandardBias=%d", tz->StandardBias);
/* daylightName (64 bytes) */
Stream_Write(s, tz->DaylightName, sizeof(tz->DaylightName));
/* DaylightDate */
rdp_write_system_time(s, &tz->DaylightDate);
/* Note that DaylightBias is ignored if no valid daylightDate is provided. */
/* DaylightBias */
Stream_Write_UINT32(s, tz->DaylightBias);
DEBUG_TIMEZONE("DaylightBias=%d", tz->DaylightBias);
return TRUE;
}
void rdp_write_system_time(STREAM* s, SYSTEM_TIME* system_time)
{
stream_write_UINT16(s, system_time->wYear); /* wYear, must be set to 0 */
stream_write_UINT16(s, system_time->wMonth); /* wMonth */
stream_write_UINT16(s, system_time->wDayOfWeek); /* wDayOfWeek */
stream_write_UINT16(s, system_time->wDay); /* wDay */
stream_write_UINT16(s, system_time->wHour); /* wHour */
stream_write_UINT16(s, system_time->wMinute); /* wMinute */
stream_write_UINT16(s, system_time->wSecond); /* wSecond */
stream_write_UINT16(s, system_time->wMilliseconds); /* wMilliseconds */
DEBUG_TIMEZONE("Time: y=%d,m=%d,dow=%d,d=%d, %02d:%02d:%02d.%03d",
system_time->wYear, system_time->wMonth, system_time->wDayOfWeek,
system_time->wDay, system_time->wHour, system_time->wMinute,
system_time->wSecond, system_time->wMilliseconds);
}
void rdp_write_client_time_zone(STREAM* s, rdpSettings* settings)
{
UINT32 bias;
INT32 sbias;
UINT32 bias2c;
WCHAR* standardName;
WCHAR* daylightName;
int standardNameLength;
int daylightNameLength;
TIME_ZONE_INFO* clientTimeZone;
clientTimeZone = settings->ClientTimeZone;
freerdp_time_zone_detect(clientTimeZone);
standardNameLength = ConvertToUnicode(CP_UTF8, 0, clientTimeZone->standardName, -1, &standardName, 0) * 2;
daylightNameLength = ConvertToUnicode(CP_UTF8, 0, clientTimeZone->daylightName, -1, &daylightName, 0) * 2;
if (standardNameLength > 62)
standardNameLength = 62;
if (daylightNameLength > 62)
daylightNameLength = 62;
/* UTC = LocalTime + Bias <-> Bias = UTC - LocalTime */
/* Translate from biases used throughout libfreerdp-locale/timezone.c
* to what RDP expects, which is minutes *west* of UTC.
* Though MS-RDPBCGR specifies bias as unsigned, two's complement
* (a negative integer) works fine for zones east of UTC.
*/
if (clientTimeZone->bias <= 720)
bias = -1 * clientTimeZone->bias;
else
bias = 1440 - clientTimeZone->bias;
stream_write_UINT32(s, bias); /* Bias */
/* standardName (64 bytes) */
stream_write(s, standardName, standardNameLength);
stream_write_zero(s, 64 - standardNameLength);
rdp_write_system_time(s, &clientTimeZone->standardDate); /* StandardDate */
DEBUG_TIMEZONE("bias=%d stdName='%s' dlName='%s'",
bias, clientTimeZone->standardName, clientTimeZone->daylightName);
sbias = clientTimeZone->standardBias - clientTimeZone->bias;
if (sbias < 0)
bias2c = (UINT32) sbias;
else
bias2c = ~((UINT32) sbias) + 1;
/* Note that StandardBias is ignored if no valid standardDate is provided. */
stream_write_UINT32(s, bias2c); /* StandardBias */
DEBUG_TIMEZONE("StandardBias=%d", bias2c);
/* daylightName (64 bytes) */
stream_write(s, daylightName, daylightNameLength);
stream_write_zero(s, 64 - daylightNameLength);
rdp_write_system_time(s, &clientTimeZone->daylightDate); /* DaylightDate */
sbias = clientTimeZone->daylightBias - clientTimeZone->bias;
if (sbias < 0)
bias2c = (UINT32) sbias;
else
bias2c = ~((UINT32) sbias) + 1;
/* Note that DaylightBias is ignored if no valid daylightDate is provided. */
stream_write_UINT32(s, bias2c); /* DaylightBias */
DEBUG_TIMEZONE("DaylightBias=%d", bias2c);
free(standardName);
free(daylightName);
}
