OCA\DAV\CalDAV\Schedule\IMipPlugin::schedule()

Complexity

Conditions	26
Paths	585

Size

Total Lines	160
Code Lines	84

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
	public function schedule(Message $iTipMessage) {
		// Not sending any emails if the system considers the update
		// insignificant.
		if (!$iTipMessage->significantChange) {
			if (!$iTipMessage->scheduleStatus) {
				$iTipMessage->scheduleStatus = '1.0;We got the message, but it\'s not significant enough to warrant an email';
			}
			return;
		}

		if (parse_url($iTipMessage->sender, PHP_URL_SCHEME) !== 'mailto'
			|| parse_url($iTipMessage->recipient, PHP_URL_SCHEME) !== 'mailto') {
			return;
		}

		// don't send out mails for events that already took place
		$lastOccurrence = $this->imipService->getLastOccurrence($iTipMessage->message);
		$currentTime = $this->timeFactory->getTime();
		if ($lastOccurrence < $currentTime) {
			return;
		}

		// Strip off mailto:
		$recipient = substr($iTipMessage->recipient, 7);
		if (!$this->mailer->validateMailAddress($recipient)) {
			// Nothing to send if the recipient doesn't have a valid email address
			$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
			return;
		}
		$recipientName = $iTipMessage->recipientName ?: null;

		$newEvents = $iTipMessage->message;
		$oldEvents = $this->getVCalendar();

		$modified = $this->eventComparisonService->findModified($newEvents, $oldEvents);
		/** @var VEvent $vEvent */
		$vEvent = array_pop($modified['new']);
		/** @var VEvent $oldVevent */
		$oldVevent = !empty($modified['old']) && is_array($modified['old']) ? array_pop($modified['old']) : null;

		// No changed events after all - this shouldn't happen if there is significant change yet here we are
		// The scheduling status is debatable
		if(empty($vEvent)) {
			$this->logger->warning('iTip message said the change was significant but comparison did not detect any updated VEvents');
			$iTipMessage->scheduleStatus = '1.0;We got the message, but it\'s not significant enough to warrant an email';
			return;
		}

		// we (should) have one event component left
		// as the ITip\Broker creates one iTip message per change
		// and triggers the "schedule" event once per message
		// we also might not have an old event as this could be a new
		// invitation, or a new recurrence exception
		$attendee = $this->imipService->getCurrentAttendee($iTipMessage);
		$this->imipService->setL10n($attendee);

		// Build the sender name.
		// Due to a bug in sabre, the senderName property for an iTIP message
		// can actually also be a VObject Property
		/** @var Parameter|string|null $senderName */
		$senderName = $iTipMessage->senderName ?: null;
		if($senderName instanceof Parameter) {
			$senderName = $senderName->getValue() ?? null;
		}

		if ($senderName === null || empty(trim($senderName))) {
			$senderName = $this->userManager->getDisplayName($this->userId);
		}
		$sender = substr($iTipMessage->sender, 7);

		switch (strtolower($iTipMessage->method)) {
			case self::METHOD_REPLY:
				$method = self::METHOD_REPLY;
				$data = $this->imipService->buildBodyData($vEvent, $oldVevent);
				break;
			case self::METHOD_CANCEL:
				$method = self::METHOD_CANCEL;
				$data = $this->imipService->buildCancelledBodyData($vEvent);
				break;
			default:
				$method = self::METHOD_REQUEST;
				$data = $this->imipService->buildBodyData($vEvent, $oldVevent);
				break;
		}


		$data['attendee_name'] = ($recipientName ?: $recipient);
		$data['invitee_name'] = ($senderName ?: $sender);

		$fromEMail = Util::getDefaultEmailAddress('invitations-noreply');
		$fromName = $this->imipService->getFrom($senderName, $this->defaults->getName());

		$message = $this->mailer->createMessage()
			->setFrom([$fromEMail => $fromName])
			->setTo([$recipient => $recipientName])
			->setReplyTo([$sender => $senderName]);

		$template = $this->mailer->createEMailTemplate('dav.calendarInvite.' . $method, $data);
		$template->addHeader();

		$this->imipService->addSubjectAndHeading($template, $method, $data['invitee_name'], $data['meeting_title']);
		$this->imipService->addBulletList($template, $vEvent, $data);

		// Only add response buttons to invitation requests: Fix Issue #11230
		if (strcasecmp($method, self::METHOD_REQUEST) === 0 && $this->imipService->getAttendeeRsvpOrReqForParticipant($attendee)) {

			/*
			** Only offer invitation accept/reject buttons, which link back to the
			** nextcloud server, to recipients who can access the nextcloud server via
			** their internet/intranet.  Issue #12156
			**
			** The app setting is stored in the appconfig database table.
			**
			** For nextcloud servers accessible to the public internet, the default
			** "invitation_link_recipients" value "yes" (all recipients) is appropriate.
			**
			** When the nextcloud server is restricted behind a firewall, accessible
			** only via an internal network or via vpn, you can set "dav.invitation_link_recipients"
			** to the email address or email domain, or comma separated list of addresses or domains,
			** of recipients who can access the server.
			**
			** To always deliver URLs, set invitation_link_recipients to "yes".
			** To suppress URLs entirely, set invitation_link_recipients to boolean "no".
			*/

			$recipientDomain = substr(strrchr($recipient, '@'), 1);
			$invitationLinkRecipients = explode(',', preg_replace('/\s+/', '', strtolower($this->config->getAppValue('dav', 'invitation_link_recipients', 'yes'))));

			if (strcmp('yes', $invitationLinkRecipients[0]) === 0
				|| in_array(strtolower($recipient), $invitationLinkRecipients)
				|| in_array(strtolower($recipientDomain), $invitationLinkRecipients)) {
				$token = $this->imipService->createInvitationToken($iTipMessage, $vEvent, $lastOccurrence);
				$this->imipService->addResponseButtons($template, $token);
				$this->imipService->addMoreOptionsButton($template, $token);
			}
		}

		$template->addFooter();

		$message->useTemplate($template);

		$vCalendar = $this->imipService->generateVCalendar($iTipMessage, $vEvent);

		$attachment = $this->mailer->createAttachment(
			$vCalendar->serialize(),
			'event.ics',
			'text/calendar; method=' . $iTipMessage->method
		);
		$message->attach($attachment);

		try {
			$failed = $this->mailer->send($message);
			$iTipMessage->scheduleStatus = '1.1; Scheduling message is sent via iMip';
			if (!empty($failed)) {
				$this->logger->error('Unable to deliver message to {failed}', ['app' => 'dav', 'failed' => implode(', ', $failed)]);
				$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
			}
		} catch (\Exception $ex) {
			$this->logger->error($ex->getMessage(), ['app' => 'dav', 'exception' => $ex]);
			$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
		}