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<?php
/**
* Bitrix Framework
* @package bitrix
* @subpackage main
* @copyright 2001-2013 Bitrix
*/
use Bitrix\Main;
class CTimeZone
{
protected static $enabled = 1;
protected static $useTimeZones = false;
public static function Possible()
{
//since PHP 5.2
return true;
}
public static function Enabled()
{
return (self::$enabled > 0 && self::OptionEnabled());
}
public static function OptionEnabled()
{
if(self::$useTimeZones === false)
{
self::$useTimeZones = COption::GetOptionString("main", "use_time_zones", "N");
}
return (self::$useTimeZones == "Y");
}
public static function Disable()
{
self::$enabled --;
}
public static function Enable()
{
self::$enabled ++;
}
private static function __tzsort($a, $b)
{
if($a['offset'] == $b['offset'])
return strcmp($a['timezone_id'], $b['timezone_id']);
return ($a['offset'] < $b['offset']? -1 : 1);
}
public static function GetZones()
{
IncludeModuleLangFile(__FILE__);
$aTZ = array();
static $aExcept = array("Etc/", "GMT", "UTC", "UCT", "HST", "PST", "MST", "CST", "EST", "CET", "MET", "WET", "EET", "PRC", "ROC", "ROK", "W-SU");
foreach(DateTimeZone::listIdentifiers() as $tz)
{
foreach($aExcept as $ex)
if(strpos($tz, $ex) === 0)
continue 2;
try
{
$oTz = new DateTimeZone($tz);
$aTZ[$tz] = array('timezone_id'=>$tz, 'offset'=>$oTz->getOffset(new DateTime("now", $oTz)));
}
catch(Exception $e){}
}
uasort($aTZ, array('CTimeZone', '__tzsort'));
$aZones = array(""=>GetMessage("tz_local_time"));
foreach ($aTZ as $z)
{
$offset = '';
if ($z['offset'] != 0)
{
$offset = ' ' . Main\Type\DateTime::secondsToOffset($z['offset'], ':');
}
$aZones[$z['timezone_id']] = '(UTC' . $offset . ') ' . $z['timezone_id'];
}
return $aZones;
}
public static function SetAutoCookie()
{
/** @global CMain $APPLICATION */
global $APPLICATION, $USER;
$cookiePrefix = COption::GetOptionString('main', 'cookie_name', 'BITRIX_SM');
$autoTimeZone = $USER->GetParam("AUTO_TIME_ZONE") ?: '';
if (self::IsAutoTimeZone(trim($autoTimeZone)))
{
$cookieDate = (new \Bitrix\Main\Type\DateTime())->add("12M");
$cookieDate->setDate((int)$cookieDate->format('Y'), (int)$cookieDate->format('m'), 1);
$cookieDate->setTime(0, 0);
$APPLICATION->AddHeadString(
'<script type="text/javascript">if (Intl && Intl.DateTimeFormat) document.cookie="'.$cookiePrefix.'_TZ="+Intl.DateTimeFormat().resolvedOptions().timeZone+"; path=/; expires='.$cookieDate->format("r").'";</script>', true
);
}
elseif (isset($_COOKIE[$cookiePrefix."_TZ"]))
{
setcookie($cookiePrefix."_TZ", "", time()-3600, "/");
}
if (isset($_COOKIE[$cookiePrefix."_TIME_ZONE"]))
{
// delete deprecated cookie
setcookie($cookiePrefix."_TIME_ZONE", "", time()-3600, "/");
}
}
public static function getTzCookie()
{
$context = Main\Context::getCurrent();
if ($context)
{
return $context->getRequest()->getCookie('TZ');
}
return null;
}
public static function IsAutoTimeZone($autoTimeZone)
{
if ($autoTimeZone === "Y")
{
return true;
}
if (empty($autoTimeZone))
{
static $defAutoZone = null;
if ($defAutoZone === null)
{
$defAutoZone = (COption::GetOptionString("main", "auto_time_zone", "N") == "Y");
}
return $defAutoZone;
}
return false;
}
/**
* @deprecated
* @return int|null
*/
public static function GetCookieValue()
{
static $cookie_prefix = null;
if($cookie_prefix === null)
{
$cookie_prefix = COption::GetOptionString('main', 'cookie_name', 'BITRIX_SM');
}
if(isset($_COOKIE[$cookie_prefix."_TIME_ZONE"]) && $_COOKIE[$cookie_prefix."_TIME_ZONE"] <> '')
{
return intval($_COOKIE[$cookie_prefix."_TIME_ZONE"]);
}
return null;
}
/**
* @deprecated
* Emulates timezone got from JS cookie setter like in SetAutoCookie.
*
* @param int $timezoneOffset Time zone offset
*/
public static function SetCookieValue($timezoneOffset)
{
static $cookie_prefix = null;
if($cookie_prefix === null)
{
$cookie_prefix = COption::GetOptionString('main', 'cookie_name', 'BITRIX_SM');
}
$_COOKIE[$cookie_prefix."_TIME_ZONE"] = $timezoneOffset;
}
/**
* @param int|null $USER_ID If USER_ID is set offset is taken from DB
* @param bool $forced If set, offset is calculated regardless enabling/disabling by functions Enable()/Disable().
* @return int
*/
public static function GetOffset($USER_ID = null, $forced = false)
{
global $USER;
if ($forced)
{
if (!self::OptionEnabled())
{
return 0;
}
}
else
{
if (!self::Enabled())
{
return 0;
}
}
try //possible DateTimeZone incorrect timezone
{
$timeZone = '';
if ($USER_ID !== null)
{
$dbUser = CUser::GetList('id', 'asc', ['ID_EQUAL_EXACT' => $USER_ID], ['FIELDS' => ['AUTO_TIME_ZONE', 'TIME_ZONE', 'TIME_ZONE_OFFSET']]);
if (($arUser = $dbUser->Fetch()))
{
if (self::IsAutoTimeZone(trim($arUser["AUTO_TIME_ZONE"])))
{
// can't detect auto timezone for a non-current user, return actual offset from the DB
return intval($arUser["TIME_ZONE_OFFSET"]);
}
$timeZone = $arUser["TIME_ZONE"];
}
}
elseif (is_object($USER))
{
// current user
$autoTimeZone = $USER->GetParam("AUTO_TIME_ZONE") ?: '';
if (self::IsAutoTimeZone(trim($autoTimeZone)))
{
if (($cookie = static::getTzCookie()) !== null)
{
// auto time zone from the cookie
$timeZone = $cookie;
}
elseif (($cookie = static::GetCookieValue()) !== null)
{
//auto time offset from old cookie - deprecated
$localOffset = (new DateTime())->getOffset();
$userOffset = -($cookie) * 60;
return $userOffset - $localOffset;
}
}
else
{
// user set time zone manually
$timeZone = $USER->GetParam("TIME_ZONE");
}
}
if ($timeZone == '')
{
//default server time zone
$timeZone = COption::GetOptionString("main", "default_time_zone", "");
}
if ($timeZone != '')
{
$localOffset = (new DateTime())->getOffset();
$userTime = new DateTime('now', new DateTimeZone($timeZone));
$userOffset = $userTime->getOffset();
return $userOffset - $localOffset;
}
}
catch (Throwable $e)
{
}
return 0;
}
}