egroupware/calendar/holidays.php

53 lines
1.5 KiB
PHP

<?php
/**
* Load holidays from server
*
* Called from calendar_view widget to get cachable holiday list.
* It's broken out into a separate file to get around anonymous user not having
* calendar run rights in sitemgr.
*
* @link www.egroupware.org
* @author Nathan Gray
* @package calendar
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @version $Id$
*/
use EGroupware\Api;
// switch evtl. set output-compression off, as we cant calculate a Content-Length header with transparent compression
ini_set('zlib.output_compression', 0);
$GLOBALS['egw_info'] = array(
'flags' => array(
'currentapp' => 'api',
'noheader' => true,
'nocachecontrol' => true,
)
);
include '../header.inc.php';
$GLOBALS['egw_info']['flags']['currentapp'] = 'calendar';
$cal_bo = new calendar_bo();
$holidays = json_encode($cal_bo->read_holidays((int)$_GET['year']));
// use an etag over holidays
$etag = '"'.md5($holidays).'"';
// headers to allow caching, egw_framework specifies etag on url to force reload, even with Expires header
Api\Session::cache_control(86400); // cache for one day
Header('Content-Type: application/json; charset=utf-8');
Header('ETag: '.$etag);
// if servers send a If-None-Match header, response with 304 Not Modified, if etag matches
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && $_SERVER['HTTP_IF_NONE_MATCH'] == $etag)
{
header("HTTP/1.1 304 Not Modified");
exit;
}
// Content-Lenght header is important, otherwise browsers dont cache!
Header('Content-Length: '.bytes($holidays));
echo $holidays;