object.php
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<?php
/**
* ownCloud - OC_Connector_Sabre_CalDAV_CalendarObject
*
* @author Thomas Tanghus
* @copyright 2012 Thomas Tanghus (thomas@tanghus.net)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* This class overrides Sabre_CalDAV_CalendarObject::getACL()
* to return read/write permissions based on user and shared state.
*/
class OC_Connector_Sabre_CalDAV_CalendarObject extends Sabre_CalDAV_CalendarObject {
/**
* Returns a list of ACE's for this node.
*
* Each ACE has the following properties:
* * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
* currently the only supported privileges
* * 'principal', a url to the principal who owns the node
* * 'protected' (optional), indicating that this ACE is not allowed to
* be updated.
*
* @return array
*/
public function getACL() {
$readprincipal = $this->getOwner();
$writeprincipal = $this->getOwner();
$uid = OC_Calendar_Calendar::extractUserID($this->getOwner());
if($uid != OCP\USER::getUser()) {
$object = OC_VObject::parse($this->objectData['calendardata']);
$sharedCalendar = OCP\Share::getItemSharedWithBySource('calendar', $this->calendarInfo['id']);
$sharedAccessClassPermissions = OC_Calendar_Object::getAccessClassPermissions($object);
if ($sharedCalendar && ($sharedCalendar['permissions'] & OCP\PERMISSION_READ) && ($sharedAccessClassPermissions & OCP\PERMISSION_READ)) {
$readprincipal = 'principals/' . OCP\USER::getUser();
}
if ($sharedCalendar && ($sharedCalendar['permissions'] & OCP\PERMISSION_UPDATE) && ($sharedAccessClassPermissions & OCP\PERMISSION_UPDATE)) {
$writeprincipal = 'principals/' . OCP\USER::getUser();
}
}
return array(
array(
'privilege' => '{DAV:}read',
'principal' => $readprincipal,
'protected' => true,
),
array(
'privilege' => '{DAV:}write',
'principal' => $writeprincipal,
'protected' => true,
),
array(
'privilege' => '{DAV:}read',
'principal' => $readprincipal . '/calendar-proxy-write',
'protected' => true,
),
array(
'privilege' => '{DAV:}write',
'principal' => $writeprincipal . '/calendar-proxy-write',
'protected' => true,
),
array(
'privilege' => '{DAV:}read',
'principal' => $readprincipal . '/calendar-proxy-read',
'protected' => true,
),
);
}
}