nextcloud/apps/dav/lib/Controller/InvitationResponseControlle...

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<?php
declare(strict_types=1);
/**
* @copyright 2018, Georg Ehrke <oc.list@georgehrke.com>
*
* @author Georg Ehrke <oc.list@georgehrke.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\Controller;
use OCA\DAV\CalDAV\InvitationResponse\InvitationResponseServer;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\IDBConnection;
use OCP\IRequest;
use Sabre\VObject\ITip\Message;
use Sabre\VObject\Reader;
class InvitationResponseController extends Controller {
/** @var IDBConnection */
private $db;
/** @var ITimeFactory */
private $timeFactory;
/** @var InvitationResponseServer */
private $responseServer;
/**
* InvitationResponseController constructor.
*
* @param string $appName
* @param IRequest $request
* @param IDBConnection $db
* @param ITimeFactory $timeFactory
* @param InvitationResponseServer $responseServer
*/
public function __construct(string $appName, IRequest $request,
IDBConnection $db, ITimeFactory $timeFactory,
InvitationResponseServer $responseServer) {
parent::__construct($appName, $request);
$this->db = $db;
$this->timeFactory = $timeFactory;
$this->responseServer = $responseServer;
// Don't run `$server->exec()`, because we just need access to the
// fully initialized schedule plugin, but we don't want Sabre/DAV
// to actually handle and reply to the request
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $token
* @return TemplateResponse
*/
public function accept(string $token):TemplateResponse {
$row = $this->getTokenInformation($token);
if (!$row) {
return new TemplateResponse($this->appName, 'schedule-response-error', [], 'guest');
}
$iTipMessage = $this->buildITipResponse($row, 'ACCEPTED');
$this->responseServer->handleITipMessage($iTipMessage);
if ($iTipMessage->getScheduleStatus() === '1.2') {
return new TemplateResponse($this->appName, 'schedule-response-success', [], 'guest');
}
return new TemplateResponse($this->appName, 'schedule-response-error', [
'organizer' => $row['organizer'],
], 'guest');
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $token
* @return TemplateResponse
*/
public function decline(string $token):TemplateResponse {
$row = $this->getTokenInformation($token);
if (!$row) {
return new TemplateResponse($this->appName, 'schedule-response-error', [], 'guest');
}
$iTipMessage = $this->buildITipResponse($row, 'DECLINED');
$this->responseServer->handleITipMessage($iTipMessage);
if ($iTipMessage->getScheduleStatus() === '1.2') {
return new TemplateResponse($this->appName, 'schedule-response-success', [], 'guest');
}
return new TemplateResponse($this->appName, 'schedule-response-error', [
'organizer' => $row['organizer'],
], 'guest');
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $token
* @return TemplateResponse
*/
public function options(string $token):TemplateResponse {
return new TemplateResponse($this->appName, 'schedule-response-options', [
'token' => $token
], 'guest');
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $token
*
* @return TemplateResponse
*/
public function processMoreOptionsResult(string $token):TemplateResponse {
$partstat = $this->request->getParam('partStat');
$guests = (int) $this->request->getParam('guests');
$comment = $this->request->getParam('comment');
$row = $this->getTokenInformation($token);
if (!$row || !\in_array($partstat, ['ACCEPTED', 'DECLINED', 'TENTATIVE'])) {
return new TemplateResponse($this->appName, 'schedule-response-error', [], 'guest');
}
$iTipMessage = $this->buildITipResponse($row, $partstat, $guests, $comment);
$this->responseServer->handleITipMessage($iTipMessage);
if ($iTipMessage->getScheduleStatus() === '1.2') {
return new TemplateResponse($this->appName, 'schedule-response-success', [], 'guest');
}
return new TemplateResponse($this->appName, 'schedule-response-error', [
'organizer' => $row['organizer'],
], 'guest');
}
/**
* @param string $token
* @return array|null
*/
private function getTokenInformation(string $token) {
$query = $this->db->getQueryBuilder();
$query->select('*')
->from('calendar_invitations')
->where($query->expr()->eq('token', $query->createNamedParameter($token)));
$stmt = $query->execute();
$row = $stmt->fetch(\PDO::FETCH_ASSOC);
if(!$row) {
return null;
}
$currentTime = $this->timeFactory->getTime();
if (((int) $row['expiration']) < $currentTime) {
return null;
}
return $row;
}
/**
* @param array $row
* @param string $partStat participation status of attendee - SEE RFC 5545
* @param int|null $guests
* @param string|null $comment
* @return Message
*/
private function buildITipResponse(array $row, string $partStat, int $guests=null,
string $comment=null):Message {
$iTipMessage = new Message();
$iTipMessage->uid = $row['uid'];
$iTipMessage->component = 'VEVENT';
$iTipMessage->method = 'REPLY';
$iTipMessage->sequence = $row['sequence'];
$iTipMessage->sender = $row['attendee'];
$iTipMessage->recipient = $row['organizer'];
$message = <<<EOF
BEGIN:VCALENDAR
PRODID:-//Nextcloud/Nextcloud CalDAV Server//EN
METHOD:REPLY
VERSION:2.0
BEGIN:VEVENT
ATTENDEE;PARTSTAT=%s:%s
ORGANIZER:%s
UID:%s
SEQUENCE:%s
REQUEST-STATUS:2.0;Success
%sEND:VEVENT
END:VCALENDAR
EOF;
$vObject = Reader::read(vsprintf($message, [
$partStat, $row['attendee'], $row['organizer'],
$row['uid'], $row['sequence'] ?? 0, $row['recurrenceid'] ?? ''
]));
$vEvent = $vObject->{'VEVENT'};
/** @var \Sabre\VObject\Property\ICalendar\CalAddress $attendee */
$attendee = $vEvent->{'ATTENDEE'};
$vEvent->DTSTAMP = date('Ymd\\THis\\Z', $this->timeFactory->getTime());
if ($comment) {
$attendee->add('X-RESPONSE-COMMENT', $comment);
$vEvent->add('COMMENT', $comment);
}
if ($guests) {
$attendee->add('X-NUM-GUESTS', $guests);
}
$iTipMessage->message = $vObject;
return $iTipMessage;
}
}