use Friendica\Content\Text\Markdown;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
+use Friendica\Core\System;
+use Friendica\DI;
use Friendica\Model\Contact;
use Friendica\Model\APContact;
use Friendica\Model\Item;
use Friendica\Util\HTTPSignature;
use Friendica\Util\JsonLD;
use Friendica\Util\LDSignature;
+use Friendica\Util\Network;
use Friendica\Util\Strings;
/**
const TARGET_ANSWER = 6;
const TARGET_GLOBAL = 7;
+ const COMPLETION_NONE = 0;
+ const COMPLETION_ANNOUCE = 1;
+ const COMPLETION_RELAY = 2;
+ const COMPLETION_MANUAL = 3;
+ const COMPLETION_AUTO = 4;
+
/**
* Checks incoming message from the inbox
*
return;
}
- $id = Processor::fetchMissingActivity($object_id, [], $actor);
+ $id = Processor::fetchMissingActivity($object_id, [], $actor, self::COMPLETION_RELAY);
if (empty($id)) {
Logger::notice('Relayed message had not been fetched', ['id' => $object_id]);
return;
$reception_types[$data['uid']] = $data['type'] ?? self::TARGET_UNKNOWN;
}
+ $urls = self::getReceiverURL($activity);
+
// When it is a delivery to a personal inbox we add that user to the receivers
if (!empty($uid)) {
$additional = [$uid => $uid];
$receivers = array_replace($receivers, $additional);
if (empty($activity['thread-completion']) && (empty($reception_types[$uid]) || in_array($reception_types[$uid], [self::TARGET_UNKNOWN, self::TARGET_FOLLOWER, self::TARGET_ANSWER, self::TARGET_GLOBAL]))) {
$reception_types[$uid] = self::TARGET_BCC;
+ $owner = User::getOwnerDataById($uid);
+ if (!empty($owner['url'])) {
+ $urls['as:bcc'][] = $owner['url'];
+ }
}
}
$object_data['object_object'] = JsonLD::fetchElement($activity['as:object'], 'as:object');
$object_data['object_type'] = JsonLD::fetchElement($activity['as:object'], '@type');
$object_data['push'] = $push;
- } elseif (in_array($type, ['as:Create', 'as:Update', 'as:Announce']) || strpos($type, '#emojiReaction')) {
- // Fetch the content only on activities where this matters
- // We can receive "#emojiReaction" when fetching content from Hubzilla systems
+ } elseif (in_array($type, ['as:Create', 'as:Update', 'as:Announce', 'as:Invite']) || strpos($type, '#emojiReaction')) {
+ // Fetch the content only on activities where this matters
+ // We can receive "#emojiReaction" when fetching content from Hubzilla systems
// Always fetch on "Announce"
$object_data = self::fetchObject($object_id, $activity['as:object'], $trust_source && ($type != 'as:Announce'), $fetch_uid);
if (empty($object_data)) {
} else {
$object_data['directmessage'] = JsonLD::fetchElement($activity, 'litepub:directMessage');
}
- } elseif (in_array($type, array_merge(self::ACTIVITY_TYPES, ['as:Follow'])) && in_array($object_type, self::CONTENT_TYPES)) {
+ } elseif (in_array($type, array_merge(self::ACTIVITY_TYPES, ['as:Follow', 'litepub:EmojiReact', 'as:View'])) && in_array($object_type, self::CONTENT_TYPES)) {
// Create a mostly empty array out of the activity data (instead of the object).
// This way we later don't have to check for the existence of each individual array element.
$object_data = self::processObject($activity);
$object_data['object_id'] = $object_id;
$object_data['object_type'] = ''; // Since we don't fetch the object, we don't know the type
$object_data['push'] = $push;
- } elseif (in_array($type, ['as:Add'])) {
+ } elseif (in_array($type, ['as:Add', 'as:Remove'])) {
$object_data = [];
$object_data['id'] = JsonLD::fetchElement($activity, '@id');
$object_data['target_id'] = JsonLD::fetchElement($activity, 'as:target', '@id');
$object_data['object_type'] = $object_type;
}
+ foreach (['as:to', 'as:cc', 'as:bto', 'as:bcc'] as $element) {
+ if ((empty($object_data['receiver_urls'][$element]) || in_array($element, ['as:bto', 'as:bcc'])) && !empty($urls[$element])) {
+ $object_data['receiver_urls'][$element] = array_unique(array_merge($object_data['receiver_urls'][$element] ?? [], $urls[$element]));
+ }
+ }
+
$object_data['type'] = $type;
$object_data['actor'] = $actor;
$object_data['item_receiver'] = $receivers;
* Processes the activity object
*
* @param array $activity Array with activity data
- * @param string $body
+ * @param string $body The unprocessed body
* @param integer $uid User ID
* @param boolean $trust_source Do we trust the source?
* @param boolean $push Message had been pushed to our system
+ * @param array $signer The signer of the post
* @throws \Exception
*/
public static function processActivity($activity, string $body = '', int $uid = null, bool $trust_source = false, bool $push = false, array $signer = [])
if (!empty($activity['thread-completion'])) {
$object_data['thread-completion'] = $activity['thread-completion'];
}
+
+ if (!empty($activity['completion-mode'])) {
+ $object_data['completion-mode'] = $activity['completion-mode'];
+ }
+
if (!empty($activity['thread-children-type'])) {
$object_data['thread-children-type'] = $activity['thread-children-type'];
}
$object_data['from-relay'] = $activity['from-relay'];
}
+ if (in_array('as:Question', [$object_data['object_type'] ?? '', $object_data['object_object_type'] ?? ''])) {
+ self::storeUnhandledActivity(false, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
+ }
+
switch ($type) {
case 'as:Create':
if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
$item = ActivityPub\Processor::createItem($object_data);
ActivityPub\Processor::postItem($object_data, $item);
+ } elseif (in_array($object_data['object_type'], ['pt:CacheFile'])) {
+ // Unhandled Peertube activity
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
+ }
+ break;
+
+ case 'as:Invite':
+ if (in_array($object_data['object_type'], ['as:Event'])) {
+ $item = ActivityPub\Processor::createItem($object_data);
+ ActivityPub\Processor::postItem($object_data, $item);
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
case 'as:Add':
if ($object_data['object_type'] == 'as:tag') {
ActivityPub\Processor::addTag($object_data);
+ } elseif (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::addToFeaturedCollection($object_data);
+ } elseif ($object_data['object_type'] == '') {
+ // The object type couldn't be determined. We don't have it and we can't fetch it. We ignore this activity.
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
case 'as:Announce':
if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
$object_data['thread-completion'] = Contact::getIdForURL($actor);
+ $object_data['completion-mode'] = self::COMPLETION_ANNOUCE;
$item = ActivityPub\Processor::createItem($object_data);
if (empty($item)) {
}
ActivityPub\Processor::createActivity($announce_object_data, Activity::ANNOUNCE);
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
case 'as:Like':
if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
ActivityPub\Processor::createActivity($object_data, Activity::LIKE);
+ } elseif ($object_data['object_type'] == '') {
+ // The object type couldn't be determined. We don't have it and we can't fetch it. We ignore this activity.
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
case 'as:Dislike':
if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
ActivityPub\Processor::createActivity($object_data, Activity::DISLIKE);
+ } elseif ($object_data['object_type'] == '') {
+ // The object type couldn't be determined. We don't have it and we can't fetch it. We ignore this activity.
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
case 'as:TentativeAccept':
if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
ActivityPub\Processor::createActivity($object_data, Activity::ATTENDMAYBE);
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
ActivityPub\Processor::updateItem($object_data);
} elseif (in_array($object_data['object_type'], self::ACCOUNT_TYPES)) {
ActivityPub\Processor::updatePerson($object_data);
+ } elseif (in_array($object_data['object_type'], ['pt:CacheFile'])) {
+ // Unhandled Peertube activity
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
case 'as:Delete':
- if ($object_data['object_type'] == 'as:Tombstone') {
+ if (in_array($object_data['object_type'], array_merge(['as:Tombstone'], self::CONTENT_TYPES))) {
ActivityPub\Processor::deleteItem($object_data);
} elseif (in_array($object_data['object_type'], self::ACCOUNT_TYPES)) {
ActivityPub\Processor::deletePerson($object_data);
+ } elseif ($object_data['object_type'] == '') {
+ // The object type couldn't be determined. Most likely we don't have it here. We ignore this activity.
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
+ }
+ break;
+
+ case 'as:Block':
+ if (in_array($object_data['object_type'], self::ACCOUNT_TYPES)) {
+ ActivityPub\Processor::blockAccount($object_data);
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
+ }
+ break;
+
+ case 'as:Remove':
+ if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::removeFromFeaturedCollection($object_data);
+ } elseif ($object_data['object_type'] == '') {
+ // The object type couldn't be determined. We don't have it and we can't fetch it. We ignore this activity.
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
} elseif (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
$object_data['reply-to-id'] = $object_data['object_id'];
ActivityPub\Processor::createActivity($object_data, Activity::FOLLOW);
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
ActivityPub\Processor::acceptFollowUser($object_data);
} elseif (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
ActivityPub\Processor::createActivity($object_data, Activity::ATTEND);
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
ActivityPub\Processor::rejectFollowUser($object_data);
} elseif (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
ActivityPub\Processor::createActivity($object_data, Activity::ATTENDNO);
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
if (($object_data['object_type'] == 'as:Follow') &&
in_array($object_data['object_object_type'], self::ACCOUNT_TYPES)) {
ActivityPub\Processor::undoFollowUser($object_data);
+ } elseif (($object_data['object_type'] == 'as:Follow') &&
+ in_array($object_data['object_object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::undoActivity($object_data);
} elseif (($object_data['object_type'] == 'as:Accept') &&
in_array($object_data['object_object_type'], self::ACCOUNT_TYPES)) {
ActivityPub\Processor::rejectFollowUser($object_data);
- } elseif (in_array($object_data['object_type'], self::ACTIVITY_TYPES) &&
- in_array($object_data['object_object_type'], self::CONTENT_TYPES)) {
+ } elseif (($object_data['object_type'] == 'as:Block') &&
+ in_array($object_data['object_object_type'], self::ACCOUNT_TYPES)) {
+ ActivityPub\Processor::unblockAccount($object_data);
+ } elseif (in_array($object_data['object_type'], array_merge(self::ACTIVITY_TYPES, ['as:Announce'])) &&
+ in_array($object_data['object_object_type'], array_merge(['as:Tombstone'], self::CONTENT_TYPES))) {
ActivityPub\Processor::undoActivity($object_data);
+ } elseif (in_array($object_data['object_type'], array_merge(self::ACTIVITY_TYPES, ['as:Announce', 'as:Create', ''])) &&
+ empty($object_data['object_object_type'])) {
+ // We cannot detect the target object. So we can ignore it.
+ } elseif (in_array($object_data['object_type'], ['as:Create']) &&
+ in_array($object_data['object_object_type'], ['pt:CacheFile'])) {
+ // Unhandled Peertube activity
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
+ }
+ break;
+
+ case 'as:View':
+ if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::createActivity($object_data, Activity::VIEW);
+ } elseif ($object_data['object_type'] == '') {
+ // The object type couldn't be determined. Most likely we don't have it here. We ignore this activity.
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
}
break;
+ case 'litepub:EmojiReact':
+ if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::createActivity($object_data, Activity::EMOJIREACT);
+ } elseif ($object_data['object_type'] == '') {
+ // The object type couldn't be determined. We don't have it and we can't fetch it. We ignore this activity.
+ } else {
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
+ }
+ break;
+
default:
Logger::info('Unknown activity: ' . $type . ' ' . $object_data['object_type']);
+ self::storeUnhandledActivity(true, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
break;
}
}
+ /**
+ * Stores unhandled or unknown Activities as a file
+ *
+ * @param boolean $unknown "true" if the activity is unknown, "false" if it is unhandled
+ * @param string $type Activity type
+ * @param array $object_data Preprocessed array that is generated out of the received activity
+ * @param array $activity Array with activity data
+ * @param string $body The unprocessed body
+ * @param integer $uid User ID
+ * @param boolean $trust_source Do we trust the source?
+ * @param boolean $push Message had been pushed to our system
+ * @param array $signer The signer of the post
+ * @return void
+ */
+ private static function storeUnhandledActivity(bool $unknown, string $type, array $object_data, array $activity, string $body = '', int $uid = null, bool $trust_source = false, bool $push = false, array $signer = [])
+ {
+ if (!DI::config()->get('debug', 'ap_log_unknown')) {
+ return;
+ }
+
+ $file = ($unknown ? 'unknown-' : 'unhandled-') . str_replace(':', '-', $type) . '-';
+
+ if (!empty($object_data['object_type'])) {
+ $file .= str_replace(':', '-', $object_data['object_type']) . '-';
+ }
+
+ if (!empty($object_data['object_object_type'])) {
+ $file .= str_replace(':', '-', $object_data['object_object_type']) . '-';
+ }
+
+ $tempfile = tempnam(System::getTempPath(), $file);
+ file_put_contents($tempfile, json_encode(['activity' => $activity, 'body' => $body, 'uid' => $uid, 'trust_source' => $trust_source, 'push' => $push, 'signer' => $signer, 'object_data' => $object_data], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT));
+ Logger::notice('Unknown activity stored', ['type' => $type, 'object_type' => $object_data['object_type'], $object_data['object_object_type'] ?? '', 'file' => $tempfile]);
+ }
+
/**
* Fetch a user id from an activity array
*
$uid = $receiver['uid'];
}
}
+
+ // When we haven't found any user yet, we just chose a user who most likely could have access to the content
+ if (empty($uid)) {
+ $contact = Contact::selectFirst(['uid'], ['nurl' => Strings::normaliseLink($actor), 'rel' => [Contact::SHARING, Contact::FRIEND]]);
+ if (!empty($contact['uid'])) {
+ $uid = $contact['uid'];
+ }
+ }
+
return $uid;
}
+ public static function getReceiverURL($activity)
+ {
+ $urls = [];
+
+ foreach (['as:to', 'as:cc', 'as:bto', 'as:bcc'] as $element) {
+ $receiver_list = JsonLD::fetchElementArray($activity, $element, '@id');
+ if (empty($receiver_list)) {
+ continue;
+ }
+
+ foreach ($receiver_list as $receiver) {
+ if ($receiver == self::PUBLIC_COLLECTION) {
+ $receiver = ActivityPub::PUBLIC_COLLECTION;
+ }
+ $urls[$element][] = $receiver;
+ }
+ }
+
+ return $urls;
+ }
+
/**
* Fetch the receiver list from an activity array
*
// Fetch the receivers for the public and the followers collection
if ((($receiver == $followers) || (($receiver == self::PUBLIC_COLLECTION) && !$is_forum)) && !empty($actor)) {
- $receivers = self::getReceiverForActor($actor, $tags, $receivers, $follower_target);
+ $receivers = self::getReceiverForActor($actor, $tags, $receivers, $follower_target, $profile);
continue;
}
* @param array $tags
* @param array $receivers
* @param integer $target_type
+ * @param array $profile
*
* @return array with receivers (user id)
* @throws \Exception
*/
- private static function getReceiverForActor($actor, $tags, $receivers, $target_type)
+ private static function getReceiverForActor($actor, $tags, $receivers, $target_type, $profile)
{
$basecondition = ['rel' => [Contact::SHARING, Contact::FRIEND, Contact::FOLLOWER],
'network' => Protocol::FEDERATED, 'archive' => false, 'pending' => false];
- $condition = DBA::mergeConditions($basecondition, ["`nurl` = ? AND `uid` != ?", Strings::normaliseLink($actor), 0]);
- $contacts = DBA::select('contact', ['uid', 'rel'], $condition);
- while ($contact = DBA::fetch($contacts)) {
- if (empty($receivers[$contact['uid']]) && self::isValidReceiverForActor($contact, $tags)) {
- $receivers[$contact['uid']] = ['uid' => $contact['uid'], 'type' => $target_type];
+ if (!empty($profile['uri-id'])) {
+ $condition = DBA::mergeConditions($basecondition, ["`uri-id` = ? AND `uid` != ?", $profile['uri-id'], 0]);
+ $contacts = DBA::select('contact', ['uid', 'rel'], $condition);
+ while ($contact = DBA::fetch($contacts)) {
+ if (empty($receivers[$contact['uid']]) && self::isValidReceiverForActor($contact, $tags)) {
+ $receivers[$contact['uid']] = ['uid' => $contact['uid'], 'type' => $target_type];
+ }
}
- }
- DBA::close($contacts);
-
- // The queries are split because of performance issues
- $condition = DBA::mergeConditions($basecondition, ["`alias` IN (?, ?) AND `uid` != ?", Strings::normaliseLink($actor), $actor, 0]);
- $contacts = DBA::select('contact', ['uid', 'rel'], $condition);
- while ($contact = DBA::fetch($contacts)) {
- if (empty($receivers[$contact['uid']]) && self::isValidReceiverForActor($contact, $tags)) {
- $receivers[$contact['uid']] = ['uid' => $contact['uid'], 'type' => $target_type];
+ DBA::close($contacts);
+ } else {
+ // This part will only be called while post update 1426 wasn't finished
+ $condition = DBA::mergeConditions($basecondition, ["`nurl` = ? AND `uid` != ?", Strings::normaliseLink($actor), 0]);
+ $contacts = DBA::select('contact', ['uid', 'rel'], $condition);
+ while ($contact = DBA::fetch($contacts)) {
+ if (empty($receivers[$contact['uid']]) && self::isValidReceiverForActor($contact, $tags)) {
+ $receivers[$contact['uid']] = ['uid' => $contact['uid'], 'type' => $target_type];
+ }
}
+ DBA::close($contacts);
+
+ // The queries are split because of performance issues
+ $condition = DBA::mergeConditions($basecondition, ["`alias` IN (?, ?) AND `uid` != ?", Strings::normaliseLink($actor), $actor, 0]);
+ $contacts = DBA::select('contact', ['uid', 'rel'], $condition);
+ while ($contact = DBA::fetch($contacts)) {
+ if (empty($receivers[$contact['uid']]) && self::isValidReceiverForActor($contact, $tags)) {
+ $receivers[$contact['uid']] = ['uid' => $contact['uid'], 'type' => $target_type];
+ }
+ }
+ DBA::close($contacts);
}
- DBA::close($contacts);
return $receivers;
}
return $attachlist;
}
+ /**
+ * Convert questions from JSON-LD format into a simplified format
+ *
+ * @param array $object
+ *
+ * @return array Questions in a simplified format
+ */
+ private static function processQuestion(array $object)
+ {
+ $question = [];
+
+ if (!empty($object['as:oneOf'])) {
+ $question['multiple'] = false;
+ $options = JsonLD::fetchElementArray($object, 'as:oneOf') ?? [];
+ } elseif (!empty($object['as:anyOf'])) {
+ $question['multiple'] = true;
+ $options = JsonLD::fetchElementArray($object, 'as:anyOf') ?? [];
+ } else {
+ return [];
+ }
+
+ $closed = JsonLD::fetchElement($object, 'as:closed', '@value');
+ if (!empty($closed)) {
+ $question['end-time'] = $closed;
+ } else {
+ $question['end-time'] = JsonLD::fetchElement($object, 'as:endTime', '@value');
+ }
+
+ $question['voters'] = (int)JsonLD::fetchElement($object, 'toot:votersCount', '@value');
+ $question['options'] = [];
+
+ $voters = 0;
+
+ foreach ($options as $option) {
+ if (JsonLD::fetchElement($option, '@type') != 'as:Note') {
+ continue;
+ }
+
+ $name = JsonLD::fetchElement($option, 'as:name', '@value');
+
+ if (empty($option['as:replies'])) {
+ continue;
+ }
+
+ $replies = JsonLD::fetchElement($option['as:replies'], 'as:totalItems', '@value');
+
+ $question['options'][] = ['name' => $name, 'replies' => $replies];
+
+ $voters += (int)$replies;
+ }
+
+ // For single choice question we can count the number of voters if not provided (like with Misskey)
+ if (empty($question['voters']) && !$question['multiple']) {
+ $question['voters'] = $voters;
+ }
+
+ return $question;
+ }
+
/**
* Fetch the original source or content with the "language" Markdown or HTML
*
}
}
+ if (!empty($object_data['alternate-url']) && !Network::isValidHttpUrl($object_data['alternate-url'])) {
+ $object_data['alternate-url'] = null;
+ }
+
if (in_array($object_data['object_type'], ['as:Audio', 'as:Video'])) {
$object_data['alternate-url'] = self::extractAlternateUrl($object['as:url'] ?? []) ?: $object_data['alternate-url'];
$object_data['attachments'] = array_merge($object_data['attachments'], self::processAttachmentUrls($object['as:url'] ?? []));
$object_data['alternate-url'] = null;
}
+ if ($object_data['object_type'] == 'as:Question') {
+ $object_data['question'] = self::processQuestion($object);
+ }
+
$receiverdata = self::getReceivers($object, $object_data['actor'], $object_data['tags'], true);
$receivers = $reception_types = [];
foreach ($receiverdata as $key => $data) {
$reception_types[$data['uid']] = $data['type'] ?? 0;
}
- $object_data['receiver'] = $receivers;
+ $object_data['receiver_urls'] = self::getReceiverURL($object);
+ $object_data['receiver'] = $receivers;
$object_data['reception_type'] = $reception_types;
$object_data['unlisted'] = in_array(-1, $object_data['receiver']);