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Mini Shell
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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\DAV\Controller;
use OCA\DAV\CalDAV\InvitationResponse\InvitationResponseServer;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\Attribute\NoCSRFRequired;
use OCP\AppFramework\Http\Attribute\OpenAPI;
use OCP\AppFramework\Http\Attribute\PublicPage;
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;
#[OpenAPI(scope: OpenAPI::SCOPE_IGNORE)]
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
}
/**
* @param string $token
* @return TemplateResponse
*/
#[PublicPage]
#[NoCSRFRequired]
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');
}
/**
* @param string $token
* @return TemplateResponse
*/
#[PublicPage]
#[NoCSRFRequired]
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');
}
/**
* @param string $token
* @return TemplateResponse
*/
#[PublicPage]
#[NoCSRFRequired]
public function options(string $token):TemplateResponse {
return new TemplateResponse($this->appName, 'schedule-response-options', [
'token' => $token
], 'guest');
}
/**
* @param string $token
*
* @return TemplateResponse
*/
#[PublicPage]
#[NoCSRFRequired]
public function processMoreOptionsResult(string $token):TemplateResponse {
$partstat = $this->request->getParam('partStat');
$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);
$this->responseServer->handleITipMessage($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->executeQuery();
$row = $stmt->fetch(\PDO::FETCH_ASSOC);
$stmt->closeCursor();
if (!$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):Message {
$iTipMessage = new Message();
$iTipMessage->uid = $row['uid'];
$iTipMessage->component = 'VEVENT';
$iTipMessage->method = 'REPLY';
$iTipMessage->sequence = $row['sequence'];
$iTipMessage->sender = $row['attendee'];
if ($this->responseServer->isExternalAttendee($row['attendee'])) {
$iTipMessage->recipient = $row['organizer'];
} else {
$iTipMessage->recipient = $row['attendee'];
}
$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'};
$vEvent->DTSTAMP = date('Ymd\\THis\\Z', $this->timeFactory->getTime());
$iTipMessage->message = $vObject;
return $iTipMessage;
}
}
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