/**
* Event handler for the 'schedule' event.
*
* This handler attempts to look at local accounts to deliver the
* scheduling object.
*
* @param ITip\Message $iTipMessage
* @return void
*/
function scheduleLocalDelivery(ITip\Message $iTipMessage)
{
$aclPlugin = $this->server->getPlugin('acl');
// Local delivery is not available if the ACL plugin is not loaded.
if (!$aclPlugin) {
return;
}
$caldavNS = '{' . Plugin::NS_CALDAV . '}';
$principalUri = $aclPlugin->getPrincipalByUri($iTipMessage->recipient);
if (!$principalUri) {
$iTipMessage->scheduleStatus = '3.7;Could not find principal.';
return;
}
// We found a principal URL, now we need to find its inbox.
// Unfortunately we may not have sufficient privileges to find this, so
// we are temporarily turning off ACL to let this come through.
//
// Once we support PHP 5.5, this should be wrapped in a try..finally
// block so we can ensure that this privilege gets added again after.
$this->server->removeListener('propFind', [$aclPlugin, 'propFind']);
$result = $this->server->getProperties($principalUri, ['{DAV:}principal-URL', $caldavNS . 'calendar-home-set', $caldavNS . 'schedule-inbox-URL', $caldavNS . 'schedule-default-calendar-URL', '{http://sabredav.org/ns}email-address']);
// Re-registering the ACL event
$this->server->on('propFind', [$aclPlugin, 'propFind'], 20);
if (!isset($result[$caldavNS . 'schedule-inbox-URL'])) {
$iTipMessage->scheduleStatus = '5.2;Could not find local inbox';
return;
}
if (!isset($result[$caldavNS . 'calendar-home-set'])) {
$iTipMessage->scheduleStatus = '5.2;Could not locate a calendar-home-set';
return;
}
if (!isset($result[$caldavNS . 'schedule-default-calendar-URL'])) {
$iTipMessage->scheduleStatus = '5.2;Could not find a schedule-default-calendar-URL property';
return;
}
$calendarPath = $result[$caldavNS . 'schedule-default-calendar-URL']->getHref();
$homePath = $result[$caldavNS . 'calendar-home-set']->getHref();
$inboxPath = $result[$caldavNS . 'schedule-inbox-URL']->getHref();
if ($iTipMessage->method === 'REPLY') {
$privilege = 'schedule-deliver-reply';
} else {
$privilege = 'schedule-deliver-invite';
}
if (!$aclPlugin->checkPrivileges($inboxPath, $caldavNS . $privilege, DAVACL\Plugin::R_PARENT, false)) {
$iTipMessage->scheduleStatus = '3.8;organizer did not have the ' . $privilege . ' privilege on the attendees inbox';
return;
}
// Next, we're going to find out if the item already exits in one of
// the users' calendars.
$uid = $iTipMessage->uid;
$newFileName = 'sabredav-' . \Sabre\DAV\UUIDUtil::getUUID() . '.ics';
$home = $this->server->tree->getNodeForPath($homePath);
$inbox = $this->server->tree->getNodeForPath($inboxPath);
$currentObject = null;
$objectNode = null;
$isNewNode = false;
$result = $home->getCalendarObjectByUID($uid);
if ($result) {
// There was an existing object, we need to update probably.
$objectPath = $homePath . '/' . $result;
$objectNode = $this->server->tree->getNodeForPath($objectPath);
$oldICalendarData = $objectNode->get();
$currentObject = Reader::read($oldICalendarData);
} else {
$isNewNode = true;
}
$broker = new ITip\Broker();
$newObject = $broker->processMessage($iTipMessage, $currentObject);
$inbox->createFile($newFileName, $iTipMessage->message->serialize());
if (!$newObject) {
// We received an iTip message referring to a UID that we don't
// have in any calendars yet, and processMessage did not give us a
// calendarobject back.
//
// The implication is that processMessage did not understand the
// iTip message.
$iTipMessage->scheduleStatus = '5.0;iTip message was not processed by the server, likely because we didn\'t understand it.';
return;
}
// Note that we are bypassing ACL on purpose by calling this directly.
// We may need to look a bit deeper into this later. Supporting ACL
// here would be nice.
if ($isNewNode) {
$calendar = $this->server->tree->getNodeForPath($calendarPath);
$calendar->createFile($newFileName, $newObject->serialize());
} else {
// If the message was a reply, we may have to inform other
// attendees of this attendees status. Therefore we're shooting off
// another itipMessage.
if ($iTipMessage->method === 'REPLY') {
$this->processICalendarChange($oldICalendarData, $newObject, [$iTipMessage->recipient], [$iTipMessage->sender]);
}
$objectNode->put($newObject->serialize());
}
$iTipMessage->scheduleStatus = '1.2;Message delivered locally';
}
