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feat: restrict calendar invitation participants #57231

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Merged
SebastianKrupinski merged 1 commit into from
Jan 9, 2026
+246 −3
Merged

feat: restrict calendar invitation participants #57231

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12 changes: 12 additions & 0 deletions apps/dav/lib/CalDAV/Schedule/IMipPlugin.php
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Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,18 @@ public function schedule(Message $iTipMessage) {
$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
return;
}

// Check if external attendees are disabled
$externalAttendeesDisabled = $this->config->getValueBool('dav', 'caldav_external_attendees_disabled', false);
if ($externalAttendeesDisabled && !$this->imipService->isSystemUser($recipient)) {
$this->logger->debug('Invitation not sent to external attendee (external attendees disabled)', [
'uid' => $iTipMessage->uid,
'attendee' => $recipient,
]);
$iTipMessage->scheduleStatus = '5.0; External attendees are disabled';
return;
}

$recipientName = $iTipMessage->recipientName ? (string)$iTipMessage->recipientName : null;

$newEvents = $iTipMessage->message;
Expand Down
10 changes: 10 additions & 0 deletions apps/dav/lib/CalDAV/Schedule/IMipService.php
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Original file line number Diff line number Diff line change
Expand Up @@ -875,6 +875,16 @@ public function getLastOccurrence(VCalendar $vObject) {
return $dtStart->getDateTime()->getTimeStamp();
}

/**
* Check if an email address belongs to a system user
*
* @param string $email
* @return bool True if the email belongs to a system user, false otherwise
*/
public function isSystemUser(string $email): bool {
return !empty($this->userManager->getByEmail($email));
}

/**
* @param Property $attendee
*/
Expand Down
202 changes: 199 additions & 3 deletions apps/dav/tests/unit/CalDAV/Schedule/IMipPluginTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -130,6 +130,10 @@ public function testDeliveryNoSignificantChange(): void {
$message->senderName = 'Mr. Wizard';
$message->recipient = 'mailto:' . 'frodo@hobb.it';
$message->significantChange = false;

$this->config->expects(self::never())
->method('getValueBool');

$this->plugin->schedule($message);
$this->assertEquals('1.0', $message->getScheduleStatus());
}
Expand Down Expand Up @@ -177,6 +181,12 @@ public function testParsingSingle(): void {
$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::exactly(2))
->method('getValueBool')
->willReturnMap([
['dav', 'caldav_external_attendees_disabled', false, false],
['core', 'mail_providers_enabled', true, false],
]);
$this->eventComparisonService->expects(self::once())
->method('findModified')
->willReturn(['new' => [$newVevent], 'old' => [$oldVEvent]]);
Expand Down Expand Up @@ -280,6 +290,10 @@ public function testAttendeeIsResource(): void {
$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::once())
->method('getValueBool')
->with('dav', 'caldav_external_attendees_disabled', false)
->willReturn(false);
$this->eventComparisonService->expects(self::once())
->method('findModified')
->willReturn(['new' => [$newVevent], 'old' => [$oldVEvent]]);
Expand Down Expand Up @@ -354,6 +368,10 @@ public function testAttendeeIsCircle(): void {
$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::once())
->method('getValueBool')
->with('dav', 'caldav_external_attendees_disabled', false)
->willReturn(false);
$this->eventComparisonService->expects(self::once())
->method('findModified')
->willReturn(['new' => [$newVevent], 'old' => null]);
Expand Down Expand Up @@ -455,6 +473,12 @@ public function testParsingRecurrence(): void {
$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::exactly(2))
->method('getValueBool')
->willReturnMap([
['dav', 'caldav_external_attendees_disabled', false, false],
['core', 'mail_providers_enabled', true, false],
]);
$this->eventComparisonService->expects(self::once())
->method('findModified')
->willReturn(['old' => [] ,'new' => [$newVevent]]);
Expand Down Expand Up @@ -695,6 +719,12 @@ public function testMailProviderSend(): void {
$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::exactly(2))
->method('getValueBool')
->willReturnMap([
['dav', 'caldav_external_attendees_disabled', false, false],
['core', 'mail_providers_enabled', true, true],
]);
$this->service->expects(self::once())
->method('getCurrentAttendee')
->with($message)
Expand Down Expand Up @@ -837,10 +867,12 @@ public function testMailProviderDisabled(): void {
->method('getValueString')
->with('dav', 'invitation_link_recipients', 'yes')
->willReturn('yes');
$this->config->expects(self::once())
$this->config->expects(self::exactly(2))
->method('getValueBool')
->with('core', 'mail_providers_enabled', true)
->willReturn(false);
->willReturnMap([
['dav', 'caldav_external_attendees_disabled', false, false],
['core', 'mail_providers_enabled', true, false],
]);
$this->service->expects(self::once())
->method('createInvitationToken')
->with($message, $newVevent, 1496912700)
Expand Down Expand Up @@ -888,6 +920,12 @@ public function testNoOldEvent(): void {
$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::exactly(2))
->method('getValueBool')
->willReturnMap([
['dav', 'caldav_external_attendees_disabled', false, false],
['core', 'mail_providers_enabled', true, false],
]);
$this->eventComparisonService->expects(self::once())
->method('findModified')
->with($newVCalendar, null)
Expand Down Expand Up @@ -981,6 +1019,12 @@ public function testNoButtons(): void {
$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::exactly(2))
->method('getValueBool')
->willReturnMap([
['dav', 'caldav_external_attendees_disabled', false, false],
['core', 'mail_providers_enabled', true, false],
]);
$this->eventComparisonService->expects(self::once())
->method('findModified')
->with($newVCalendar, null)
Expand Down Expand Up @@ -1040,4 +1084,156 @@ public function testNoButtons(): void {
$this->plugin->schedule($message);
$this->assertEquals('1.1', $message->getScheduleStatus());
}

public function testExternalAttendeesDisabledForExternalUser(): void {
$message = new Message();
$message->method = 'REQUEST';
$newVCalendar = new VCalendar();
$newVevent = new VEvent($newVCalendar, 'one', array_merge([
'UID' => 'uid-1234',
'SEQUENCE' => 1,
'SUMMARY' => 'Fellowship meeting',
'DTSTART' => new \DateTime('2016-01-01 00:00:00')
], []));
$newVevent->add('ORGANIZER', 'mailto:gandalf@wiz.ard');
$newVevent->add('ATTENDEE', 'mailto:external@example.com', ['RSVP' => 'TRUE', 'CN' => 'External User']);
$message->message = $newVCalendar;
$message->sender = 'mailto:gandalf@wiz.ard';
$message->senderName = 'Mr. Wizard';
$message->recipient = 'mailto:external@example.com';

$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::once())
->method('getValueBool')
->with('dav', 'caldav_external_attendees_disabled', false)
->willReturn(true);
$this->service->expects(self::once())
->method('isSystemUser')
->with('external@example.com')
->willReturn(false);
$this->eventComparisonService->expects(self::never())
->method('findModified');
$this->service->expects(self::never())
->method('getCurrentAttendee');
$this->mailer->expects(self::never())
->method('send');

$this->plugin->schedule($message);
$this->assertEquals('5.0', $message->getScheduleStatus());
}

public function testExternalAttendeesDisabledForSystemUser(): void {
$message = new Message();
$message->method = 'REQUEST';
$newVCalendar = new VCalendar();
$newVevent = new VEvent($newVCalendar, 'one', array_merge([
'UID' => 'uid-1234',
'SEQUENCE' => 1,
'SUMMARY' => 'Fellowship meeting',
'DTSTART' => new \DateTime('2016-01-01 00:00:00')
], []));
$newVevent->add('ORGANIZER', 'mailto:gandalf@wiz.ard');
$newVevent->add('ATTENDEE', 'mailto:frodo@hobb.it', ['RSVP' => 'TRUE', 'CN' => 'Frodo']);
$message->message = $newVCalendar;
$message->sender = 'mailto:gandalf@wiz.ard';
$message->senderName = 'Mr. Wizard';
$message->recipient = 'mailto:frodo@hobb.it';

$oldVCalendar = new VCalendar();
$oldVEvent = new VEvent($oldVCalendar, 'one', [
'UID' => 'uid-1234',
'SEQUENCE' => 0,
'SUMMARY' => 'Fellowship meeting',
'DTSTART' => new \DateTime('2016-01-01 00:00:00')
]);
$oldVEvent->add('ORGANIZER', 'mailto:gandalf@wiz.ard');
$oldVEvent->add('ATTENDEE', 'mailto:frodo@hobb.it', ['RSVP' => 'TRUE', 'CN' => 'Frodo']);
$oldVCalendar->add($oldVEvent);

$data = ['invitee_name' => 'Mr. Wizard',
'meeting_title' => 'Fellowship meeting',
'attendee_name' => 'frodo@hobb.it'
];
$attendees = $newVevent->select('ATTENDEE');
$atnd = '';
foreach ($attendees as $attendee) {
if (strcasecmp($attendee->getValue(), $message->recipient) === 0) {
$atnd = $attendee;
}
}
$this->plugin->setVCalendar($oldVCalendar);
$this->service->expects(self::once())
->method('getLastOccurrence')
->willReturn(1496912700);
$this->config->expects(self::exactly(2))
->method('getValueBool')
->willReturnMap([
['dav', 'caldav_external_attendees_disabled', false, true],
['core', 'mail_providers_enabled', true, false],
]);
$this->service->expects(self::once())
->method('isSystemUser')
->with('frodo@hobb.it')
->willReturn(true);
$this->eventComparisonService->expects(self::once())
->method('findModified')
->willReturn(['new' => [$newVevent], 'old' => [$oldVEvent]]);
$this->service->expects(self::once())
->method('getCurrentAttendee')
->with($message)
->willReturn($atnd);
$this->service->expects(self::once())
->method('isRoomOrResource')
->with($atnd)
->willReturn(false);
$this->service->expects(self::once())
->method('isCircle')
->with($atnd)
->willReturn(false);
$this->service->expects(self::once())
->method('buildBodyData')
->with($newVevent, $oldVEvent)
->willReturn($data);
$this->user->expects(self::any())
->method('getUID')
->willReturn('user1');
$this->user->expects(self::any())
->method('getDisplayName')
->willReturn('Mr. Wizard');
$this->userSession->expects(self::any())
->method('getUser')
->willReturn($this->user);
$this->service->expects(self::once())
->method('getFrom');
$this->service->expects(self::once())
->method('addSubjectAndHeading')
->with($this->emailTemplate, 'request', 'Mr. Wizard', 'Fellowship meeting', true);
$this->service->expects(self::once())
->method('addBulletList')
->with($this->emailTemplate, $newVevent, $data);
$this->service->expects(self::once())
->method('getAttendeeRsvpOrReqForParticipant')
->willReturn(true);
$this->config->expects(self::once())
->method('getValueString')
->with('dav', 'invitation_link_recipients', 'yes')
->willReturn('yes');
$this->service->expects(self::once())
->method('createInvitationToken')
->with($message, $newVevent, 1496912700)
->willReturn('token');
$this->service->expects(self::once())
->method('addResponseButtons')
->with($this->emailTemplate, 'token');
$this->service->expects(self::once())
->method('addMoreOptionsButton')
->with($this->emailTemplate, 'token');
$this->mailer->expects(self::once())
->method('send')
->willReturn([]);
$this->plugin->schedule($message);
$this->assertEquals('1.1', $message->getScheduleStatus());
}
}
25 changes: 25 additions & 0 deletions apps/dav/tests/unit/CalDAV/Schedule/IMipServiceTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -161,6 +161,31 @@ public function testGetFrom(): void {
$this->assertEquals($expected, $actual);
}

public function testIsSystemUserWhenUserExists(): void {
$email = 'user@example.com';
$user = $this->createMock(\OCP\IUser::class);

$this->userManager->expects(self::once())
->method('getByEmail')
->with($email)
->willReturn([$user]);

$result = $this->service->isSystemUser($email);
$this->assertTrue($result);
}

public function testIsSystemUserWhenUserDoesNotExist(): void {
$email = 'external@example.com';

$this->userManager->expects(self::once())
->method('getByEmail')
->with($email)
->willReturn([]);

$result = $this->service->isSystemUser($email);
$this->assertFalse($result);
}

public function testBuildBodyDataCreated(): void {

// construct l10n return(s)
Expand Down
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