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sources/apps/calendar/lib/sabre/object.php 3.02 KB
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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/>.
   *
   */
  
  /**
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   * This class overrides \Sabre\CalDAV\CalendarObject::getACL()
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   * to return read/write permissions based on user and shared state.
  */
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  class OC_Connector_Sabre_CalDAV_CalendarObject extends \Sabre\CalDAV\CalendarObject {
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  	/**
  	* 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($uid != OCP\USER::getUser()) {
  			if($uid === 'contact_birthdays') {
  				$readprincipal = 'principals/' . OCP\User::getUser();
  			} else {
  				$object = OC_VObject::parse($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,
  			),
  		);
  
  	}
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  }