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<?php
/**
* @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
* @copyright Copyright (c) 2016, Joas Schilling <coding@schilljs.com>
*
* @author Joas Schilling <coding@schilljs.com>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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/>.
*
*/
namespace OCA\DAV\CalDAV\Schedule;
use OCA\DAV\CalDAV\CalDavBackend;
use OCA\DAV\CalDAV\CalendarHome;
use Sabre\DAV\INode;
use Sabre\DAV\PropFind;
use Sabre\DAV\Server;
use Sabre\DAV\Xml\Property\LocalHref;
use Sabre\DAVACL\IPrincipal;
use Sabre\HTTP\RequestInterface;
use Sabre\HTTP\ResponseInterface;
use Sabre\VObject\Component\VCalendar;
use Sabre\VObject\Reader;
class Plugin extends \Sabre\CalDAV\Schedule\Plugin {
/**
* Initializes the plugin
*
* @param Server $server
* @return void
*/
function initialize(Server $server) {
parent::initialize($server);
$server->on('propFind', [$this, 'propFindDefaultCalendarUrl'], 90);
}
/**
* Returns a list of addresses that are associated with a principal.
*
* @param string $principal
* @return array
*/
protected function getAddressesForPrincipal($principal) {
$result = parent::getAddressesForPrincipal($principal);
if ($result === null) {
$result = [];
}
return $result;
}
/**
* Always use the personal calendar as target for scheduled events
*
* @param PropFind $propFind
* @param INode $node
* @return void
*/
function propFindDefaultCalendarUrl(PropFind $propFind, INode $node) {
if ($node instanceof IPrincipal) {
$propFind->handle('{' . self::NS_CALDAV . '}schedule-default-calendar-URL', function() use ($node) {
/** @var \OCA\DAV\CalDAV\Plugin $caldavPlugin */
$caldavPlugin = $this->server->getPlugin('caldav');
$principalUrl = $node->getPrincipalUrl();
$calendarHomePath = $caldavPlugin->getCalendarHomeForPrincipal($principalUrl);
if (!$calendarHomePath) {
return null;
}
/** @var CalendarHome $calendarHome */
$calendarHome = $this->server->tree->getNodeForPath($calendarHomePath);
if (!$calendarHome->childExists(CalDavBackend::PERSONAL_CALENDAR_URI)) {
$calendarHome->getCalDAVBackend()->createCalendar($principalUrl, CalDavBackend::PERSONAL_CALENDAR_URI, [
'{DAV:}displayname' => CalDavBackend::PERSONAL_CALENDAR_NAME,
]);
}
$result = $this->server->getPropertiesForPath($calendarHomePath . '/' . CalDavBackend::PERSONAL_CALENDAR_URI, [], 1);
if (empty($result)) {
return null;
}
return new LocalHref($result[0]['href']);
});
}
}
/**
* This method is triggered whenever there was a calendar object gets
* created or updated.
*
* Basically just a copy of parent::calendarObjectChange, with the change
* from:
* $addresses = $this->getAddressesForPrincipal($calendarNode->getOwner());
* to:
* $addresses = $this->getAddressesForPrincipal($calendarNode->getPrincipalURI());
*
* @param RequestInterface $request HTTP request
* @param ResponseInterface $response HTTP Response
* @param VCalendar $vCal Parsed iCalendar object
* @param mixed $calendarPath Path to calendar collection
* @param mixed $modified The iCalendar object has been touched.
* @param mixed $isNew Whether this was a new item or we're updating one
* @return void
*/
function calendarObjectChange(RequestInterface $request, ResponseInterface $response, VCalendar $vCal, $calendarPath, &$modified, $isNew) {
if (!$this->scheduleReply($this->server->httpRequest)) {
return;
}
$calendarNode = $this->server->tree->getNodeForPath($calendarPath);
$addresses = $this->getAddressesForPrincipal(
$calendarNode->getPrincipalURI()
);
if (!$isNew) {
$node = $this->server->tree->getNodeForPath($request->getPath());
$oldObj = Reader::read($node->get());
} else {
$oldObj = null;
}
$this->processICalendarChange($oldObj, $vCal, $addresses, [], $modified);
if ($oldObj) {
// Destroy circular references so PHP will GC the object.
$oldObj->destroy();
}
}
/**
* This method checks the 'Schedule-Reply' header
* and returns false if it's 'F', otherwise true.
*
* Copied from Sabre/DAV's Schedule plugin, because it's
* private for whatever reason
*
* @param RequestInterface $request
* @return bool
*/
private function scheduleReply(RequestInterface $request) {
$scheduleReply = $request->getHeader('Schedule-Reply');
return $scheduleReply !== 'F';
}
}
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