ZP-685 New backend CalDAV. Released under the Affero GNU General Public License (AGPL) version 3.

src/backend/caldav/AUTHOR

+The Author of this backend is dupondje, I could have modified it.
+You can found the original code here:
+https://github.com/dupondje/PHP-Push-2

src/backend/caldav/REQUIREMENTS

+REQUIREMENTS:
+php-curl
+libawl-php
+
+INSTALL:
+Add your awl folder to the include_path variable (/etc/php.ini or similar)
+
+CalDAV server (DAViCal, Sabredav, Sogo, Owncloud...)

src/backend/caldav/config.php

+<?php
+/***********************************************
+* File      :   config.php
+* Project   :   Z-Push
+* Descr     :   CalDAV backend configuration file
+*
+* Created   :   27.11.2012
+*
+* Copyright 2012 - 2014 Jean-Louis Dupond
+*
+* Jean-Louis Dupond released this code as AGPLv3 here: https://github.com/dupondje/PHP-Push-2/issues/93
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Affero General Public License, version 3,
+* as published by the Free Software Foundation with the following additional
+* term according to sec. 7:
+*
+* According to sec. 7 of the GNU Affero General Public License, version 3,
+* the terms of the AGPL are supplemented with the following terms:
+*
+* "Zarafa" is a registered trademark of Zarafa B.V.
+* "Z-Push" is a registered trademark of Zarafa Deutschland GmbH
+* The licensing of the Program under the AGPL does not imply a trademark license.
+* Therefore any rights, title and interest in our trademarks remain entirely with us.
+*
+* However, if you propagate an unmodified version of the Program you are
+* allowed to use the term "Z-Push" to indicate that you distribute the Program.
+* Furthermore you may use our trademarks where it is necessary to indicate
+* the intended purpose of a product or service provided you use it in accordance
+* with honest practices in industrial or commercial matters.
+* If you want to propagate modified versions of the Program under the name "Z-Push",
+* you may only do so if you have a written permission by Zarafa Deutschland GmbH
+* (to acquire a permission please contact Zarafa at trademark@zarafa.com).
+*
+* This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Consult LICENSE file for details
+************************************************/
+
+// ************************
+//  BackendCalDAV settings
+// ************************
+
+// Server protocol: http or https
+define('CALDAV_PROTOCOL', 'https');
+
+// Server name
+define('CALDAV_SERVER', 'caldavserver.domain.com');
+
+// Server port
+define('CALDAV_PORT', '443');
+
+// Path
+define('CALDAV_PATH', '/caldav.php/%u/');
+
+// Default CalDAV folder (calendar folder/principal). This will be marked as the default calendar in the mobile
+define('CALDAV_PERSONAL', 'PRINCIPAL');
+
+// If the CalDAV server supports the sync-collection operation
+// DAViCal, SOGo and SabreDav support it
+// SabreDav version must be at least 1.9.0, otherwise set this to false
+// Setting this to false will work with most servers, but it will be slower
+define('CALDAV_SUPPORTS_SYNC', false);
+
+
+// Maximum period to sync.
+// Some servers don't support more than 10 years so you will need to change this
+define('CALDAV_MAX_SYNC_PERIOD', 2147483647);
\ No newline at end of file

src/backend/combined/config.php

@@ -74,6 +74,9 @@ class BackendCombinedConfig {
                 'v' => array(
                     'name' => 'BackendVCardDir',
                 ),
+                'c' => array(
+                    'name' => 'BackendCalDAV',
+                ),
             ),
             'delimiter' => '/',
             //force one type of folder to one backend