CDavCalendarHandler::Propfind

public function Propfind(&$arResources, $siteId, $account, $arPath, $id = null)
	{
		$calendarId = $this->GetCalendarId($siteId, $account, $arPath);
		if ($calendarId == null)
			return '404 Not Found';

		$request = $this->groupdav->GetRequest();
		$currentPrincipal = $request->GetPrincipal();

		if (!$this->CheckPrivileges('urn:ietf:params:xml:ns:caldav:read-free-busy', $currentPrincipal, $calendarId))
			return '403 Forbidden';

		$requestDocument = $request->GetXmlDocument();

		$path = CDav::CheckIfRightSlashAdded($request->GetPath());

		list($iblockId, $sectionId, $subSectionId, $accountType) = $calendarId;
		$isCalendarCollection = (!empty($accountType) && $subSectionId != 0 || empty($accountType) && $sectionId != 0);

		if (!$isCalendarCollection)
		{
			$arCalendarList = CEventCalendar::GetCalendarList($calendarId);
			foreach ($arCalendarList as $calendar)
			{
				$resource = new CDavResource($path.$calendar["ID"]."/");

				$this->GetCalendarProperties($resource, $siteId, $account, array($calendar["ID"]), 0);

				$arResources[] = $resource;
			}

			return true;
		}

		$bCalendarData = (count($requestDocument->GetPath('/*/DAV::allprop')) > 0);
		if (!$bCalendarData || $requestDocument->GetRoot()->GetXmlns() != CDavGroupDav::CALDAV)
		{
			$arProp = $requestDocument->GetPath('/*/DAV::prop/*');
			foreach ($arProp as $prop)
			{
				if ($prop->GetTag() == 'calendar-data')
				{
					$bCalendarData = true;
					break;
				}
			}
		}

		$arFilter = array(
			'DATE_START' => ConvertTimeStamp(time() - 31 * 24 * 3600, "FULL"),		// default one month back
			'DATE_END' => ConvertTimeStamp(time() + 365 * 24 * 3600, "FULL"),		// default one year into the future
		);
		if (($id || $requestDocument->GetRoot() && $requestDocument->GetRoot()->GetTag() != 'propfind') && !$this->PrepareFilters($arFilter, $requestDocument, $id))
			return false;

		$arEvents = CEventCalendar::GetCalendarEventsList($calendarId, $arFilter);
		foreach ($arEvents as $event)
		{
			if (!$this->CheckPrivileges('DAV::read', $currentPrincipal, $calendarId))
				$this->ClearPrivateData($event);

			$resource = new CDavResource($path.$this->GetPath($event));

			$resource->AddProperty('getetag', $this->GetETag($calendarId, $event));
			$resource->AddProperty('getcontenttype', $request->GetAgent() != 'kde' ? 'text/calendar; charset=utf-8; component=VEVENT' : 'text/calendar');
			$resource->AddProperty('getlastmodified', MakeTimeStamp($event['TIMESTAMP_X']));
			$resource->AddProperty('resourcetype', '');

			if ($bCalendarData)
			{
				$content = $this->GetICalContent($event, $siteId);
				$resource->AddProperty('getcontentlength', mb_strlen($content));
				$resource->AddProperty('calendar-data', $content, CDavGroupDav::CALDAV);
			}
			else
			{
				$resource->AddProperty('getcontentlength', "");
			}

			$arResources[] = $resource;
		}

		return true;
	}