/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * Time Zone Redirection

 *

 * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <winpr/crt.h>

#include <winpr/timezone.h>

#include "timezone.h"

static void rdp_read_system_time(wStream* s, SYSTEMTIME* system_time);

static void rdp_write_system_time(wStream* s, SYSTEMTIME* system_time);

/**

 * Read SYSTEM_TIME structure (TS_SYSTEMTIME).\n

 * @msdn{cc240478}

 * @param s stream

 * @param system_time system time structure

 */

void rdp_read_system_time(wStream* s, SYSTEMTIME* system_time)

{

	Stream_Read_UINT16(s, system_time->wYear);         /* wYear, must be set to 0 */

	Stream_Read_UINT16(s, system_time->wMonth);        /* wMonth */

	Stream_Read_UINT16(s, system_time->wDayOfWeek);    /* wDayOfWeek */

	Stream_Read_UINT16(s, system_time->wDay);          /* wDay */

	Stream_Read_UINT16(s, system_time->wHour);         /* wHour */

	Stream_Read_UINT16(s, system_time->wMinute);       /* wMinute */

	Stream_Read_UINT16(s, system_time->wSecond);       /* wSecond */

	Stream_Read_UINT16(s, system_time->wMilliseconds); /* wMilliseconds */

}

/**

 * Write SYSTEM_TIME structure (TS_SYSTEMTIME).\n

 * @msdn{cc240478}

 * @param s stream

 * @param system_time system time structure

 */

void rdp_write_system_time(wStream* s, SYSTEMTIME* 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=%" PRIu16 ",m=%" PRIu16 ",dow=%" PRIu16 ",d=%" PRIu16 ", %02" PRIu16

	               ":%02" PRIu16 ":%02" PRIu16 ".%03" PRIu16 "",

	               system_time->wYear, system_time->wMonth, system_time->wDayOfWeek,

	               system_time->wDay, system_time->wHour, system_time->wMinute,

	               system_time->wSecond, system_time->wMilliseconds);

}

/**

 * Read client time zone information (TS_TIME_ZONE_INFORMATION).\n

 * @msdn{cc240477}

 * @param s stream

 * @param settings settings

 */

BOOL rdp_read_client_time_zone(wStream* s, rdpSettings* settings)

{

	LPTIME_ZONE_INFORMATION tz;

	if (!s || !settings)

		return FALSE;

	if (Stream_GetRemainingLength(s) < 172)

		return FALSE;

	tz = settings->ClientTimeZone;

	if (!tz)

		return FALSE;

	Stream_Read_UINT32(s, tz->Bias); /* Bias */

	/* standardName (64 bytes) */

	Stream_Read(s, tz->StandardName, sizeof(tz->StandardName));

	rdp_read_system_time(s, &tz->StandardDate); /* StandardDate */

	Stream_Read_UINT32(s, tz->StandardBias);    /* StandardBias */

	/* daylightName (64 bytes) */

	Stream_Read(s, tz->DaylightName, sizeof(tz->DaylightName));

	rdp_read_system_time(s, &tz->DaylightDate); /* DaylightDate */

	Stream_Read_UINT32(s, tz->DaylightBias);    /* DaylightBias */

	return TRUE;

}

/**

 * Write client time zone information (TS_TIME_ZONE_INFORMATION).\n

 * @msdn{cc240477}

 * @param s stream

 * @param settings settings

 */

BOOL rdp_write_client_time_zone(wStream* s, rdpSettings* settings)

{

	LPTIME_ZONE_INFORMATION tz;

	tz = settings->ClientTimeZone;

	if (!tz)

		return FALSE;

	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);

#ifdef WITH_DEBUG_TIMEZONE

	WLog_DBG(TIMEZONE_TAG, "bias=%" PRId32 "", tz->Bias);

	WLog_DBG(TIMEZONE_TAG, "StandardName:");

	winpr_HexDump(TIMEZONE_TAG, WLOG_DEBUG, (const BYTE*)tz->StandardName,

	              sizeof(tz->StandardName));

	WLog_DBG(TIMEZONE_TAG, "DaylightName:");

	winpr_HexDump(TIMEZONE_TAG, WLOG_DEBUG, (const BYTE*)tz->DaylightName,

	              sizeof(tz->DaylightName));

#endif

	/* Note that StandardBias is ignored if no valid standardDate is provided. */

	/* StandardBias */

	Stream_Write_UINT32(s, tz->StandardBias);

	DEBUG_TIMEZONE("StandardBias=%" PRId32 "", 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=%" PRId32 "", tz->DaylightBias);

	return TRUE;

}