]> git.mxchange.org Git - friendica.git/blobdiff - src/Protocol/ActivityPub/Processor.php
Merge pull request #9206 from annando/global-direction
[friendica.git] / src / Protocol / ActivityPub / Processor.php
index 2d385c028cada493066f31d5fbded96ec7d4991a..a239ae7a1ac964f2b4b588501fc57a067a71e656 100644 (file)
@@ -21,6 +21,7 @@
 
 namespace Friendica\Protocol\ActivityPub;
 
+use Friendica\Content\PageInfo;
 use Friendica\Content\Text\BBCode;
 use Friendica\Content\Text\HTML;
 use Friendica\Core\Logger;
@@ -94,39 +95,64 @@ class Processor
                }
 
                foreach ($activity['attachments'] as $attach) {
-                       $filetype = strtolower(substr($attach['mediaType'], 0, strpos($attach['mediaType'], '/')));
-                       if ($filetype == 'image') {
-                               if (!empty($activity['source']) && strpos($activity['source'], $attach['url'])) {
-                                       continue;
-                               }
-
-                               if (empty($attach['name'])) {
-                                       $item['body'] .= "\n[img]" . $attach['url'] . '[/img]';
-                               } else {
-                                       $item['body'] .= "\n[img=" . $attach['url'] . ']' . $attach['name'] . '[/img]';
-                               }
-                       } elseif ($filetype == 'audio') {
-                               if (!empty($activity['source']) && strpos($activity['source'], $attach['url'])) {
-                                       continue;
-                               }
-
-                               $item['body'] .= "\n[audio]" . $attach['url'] . '[/audio]';
-                       } elseif ($filetype == 'video') {
-                               if (!empty($activity['source']) && strpos($activity['source'], $attach['url'])) {
-                                       continue;
-                               }
-
-                               $item['body'] .= "\n[video]" . $attach['url'] . '[/video]';
-                       } else {
-                               if (!empty($item["attach"])) {
-                                       $item["attach"] .= ',';
-                               } else {
-                                       $item["attach"] = '';
-                               }
-                               if (!isset($attach['length'])) {
-                                       $attach['length'] = "0";
-                               }
-                               $item["attach"] .= '[attach]href="'.$attach['url'].'" length="'.$attach['length'].'" type="'.$attach['mediaType'].'" title="'.($attach['name'] ?? '') .'"[/attach]';
+                       switch ($attach['type']) {
+                               case 'link':
+                                       $data = [
+                                               'url'      => $attach['url'],
+                                               'type'     => $attach['type'],
+                                               'title'    => $attach['title'] ?? '',
+                                               'text'     => $attach['desc']  ?? '',
+                                               'image'    => $attach['image'] ?? '',
+                                               'images'   => [],
+                                               'keywords' => [],
+                                       ];
+                                       $item['body'] = PageInfo::appendDataToBody($item['body'], $data);
+                                       break;
+                               default:
+                                       $filetype = strtolower(substr($attach['mediaType'], 0, strpos($attach['mediaType'], '/')));
+                                       if ($filetype == 'image') {
+                                               if (!empty($activity['source']) && strpos($activity['source'], $attach['url'])) {
+                                                       continue 2;
+                                               }
+
+                                               $item['body'] .= "\n";
+
+                                               // image is the preview/thumbnail URL
+                                               if (!empty($attach['image'])) {
+                                                       $item['body'] .= '[url=' . $attach['url'] . ']';
+                                                       $attach['url'] = $attach['image'];
+                                               }
+
+                                               if (empty($attach['name'])) {
+                                                       $item['body'] .= '[img]' . $attach['url'] . '[/img]';
+                                               } else {
+                                                       $item['body'] .= '[img=' . $attach['url'] . ']' . $attach['name'] . '[/img]';
+                                               }
+
+                                               if (!empty($attach['image'])) {
+                                                       $item['body'] .= '[/url]';
+                                               }
+                                       } elseif ($filetype == 'audio') {
+                                               if (!empty($activity['source']) && strpos($activity['source'], $attach['url'])) {
+                                                       continue 2;
+                                               }
+
+                                               $item['body'] .= "\n[audio]" . $attach['url'] . '[/audio]';
+                                       } elseif ($filetype == 'video') {
+                                               if (!empty($activity['source']) && strpos($activity['source'], $attach['url'])) {
+                                                       continue 2;
+                                               }
+
+                                               $item['body'] .= "\n[video]" . $attach['url'] . '[/video]';
+                                       } else {
+                                               if (!empty($item["attach"])) {
+                                                       $item["attach"] .= ',';
+                                               } else {
+                                                       $item["attach"] = '';
+                                               }
+
+                                               $item["attach"] .= '[attach]href="' . $attach['url'] . '" length="' . ($attach['length'] ?? '0') . '" type="' . $attach['mediaType'] . '" title="' . ($attach['name'] ?? '') . '"[/attach]';
+                                       }
                        }
                }
 
@@ -144,7 +170,8 @@ class Processor
                $item = Item::selectFirst(['uri', 'uri-id', 'thr-parent', 'gravity'], ['uri' => $activity['id']]);
                if (!DBA::isResult($item)) {
                        Logger::warning('No existing item, item will be created', ['uri' => $activity['id']]);
-                       self::createItem($activity);
+                       $item = self::createItem($activity);
+                       self::postItem($activity, $item);
                        return;
                }
 
@@ -163,6 +190,7 @@ class Processor
         * Prepares data for a message
         *
         * @param array $activity Activity array
+        * @return array Internal item
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
@@ -178,9 +206,6 @@ class Processor
                } else {
                        $item['gravity'] = GRAVITY_COMMENT;
                        $item['object-type'] = Activity\ObjectType::COMMENT;
-
-                       // Ensure that the comment reaches all receivers of the referring post
-                       $activity['receiver'] = self::addReceivers($activity);
                }
 
                if (empty($activity['directmessage']) && ($activity['id'] != $activity['reply-to-id']) && !Item::exists(['uri' => $activity['reply-to-id']])) {
@@ -190,7 +215,71 @@ class Processor
 
                $item['diaspora_signed_text'] = $activity['diaspora:comment'] ?? '';
 
-               self::postItem($activity, $item);
+               /// @todo What to do with $activity['context']?
+               if (empty($activity['directmessage']) && ($item['gravity'] != GRAVITY_PARENT) && !Item::exists(['uri' => $item['thr-parent']])) {
+                       Logger::info('Parent not found, message will be discarded.', ['thr-parent' => $item['thr-parent']]);
+                       return [];
+               }
+
+               $item['network'] = Protocol::ACTIVITYPUB;
+               $item['author-link'] = $activity['author'];
+               $item['author-id'] = Contact::getIdForURL($activity['author']);
+               $item['owner-link'] = $activity['actor'];
+               $item['owner-id'] = Contact::getIdForURL($activity['actor']);
+
+               if (in_array(0, $activity['receiver']) && !empty($activity['unlisted'])) {
+                       $item['private'] = Item::UNLISTED;
+               } elseif (in_array(0, $activity['receiver'])) {
+                       $item['private'] = Item::PUBLIC;
+               } else {
+                       $item['private'] = Item::PRIVATE;
+               }
+
+               if (!empty($activity['raw'])) {
+                       $item['source'] = $activity['raw'];
+                       $item['protocol'] = Conversation::PARCEL_ACTIVITYPUB;
+                       $item['conversation-href'] = $activity['context'] ?? '';
+                       $item['conversation-uri'] = $activity['conversation'] ?? '';
+
+                       if (isset($activity['push'])) {
+                               $item['direction'] = $activity['push'] ? Conversation::PUSH : Conversation::PULL;
+                       }
+               }
+
+               $item['isForum'] = false;
+
+               if (!empty($activity['thread-completion'])) {
+                       // Store the original actor in the "causer" fields to enable the check for ignored or blocked contacts
+                       $item['causer-link'] = $item['owner-link'];
+                       $item['causer-id'] = $item['owner-id'];
+
+                       Logger::info('Ignoring actor because of thread completion.', ['actor' => $item['owner-link']]);
+                       $item['owner-link'] = $item['author-link'];
+                       $item['owner-id'] = $item['author-id'];
+               } else {
+                       $actor = APContact::getByURL($item['owner-link'], false);
+                       $item['isForum'] = ($actor['type'] == 'Group');
+               }
+
+               $item['uri'] = $activity['id'];
+
+               $item['created'] = DateTimeFormat::utc($activity['published']);
+               $item['edited'] = DateTimeFormat::utc($activity['updated']);
+               $guid = $activity['sc:identifier'] ?: self::getGUIDByURL($item['uri']);
+               $item['guid'] = $activity['diaspora:guid'] ?: $guid;
+
+               $item['uri-id'] = ItemURI::insert(['uri' => $item['uri'], 'guid' => $item['guid']]);
+
+               $item = self::processContent($activity, $item);
+               if (empty($item)) {
+                       return [];
+               }
+
+               $item['plink'] = $activity['alternate-url'] ?? $item['uri'];
+
+               $item = self::constructAttachList($activity, $item);
+
+               return $item;
        }
 
        /**
@@ -204,7 +293,7 @@ class Processor
        {
                $owner = Contact::getIdForURL($activity['actor']);
 
-               Logger::log('Deleting item ' . $activity['object_id'] . ' from ' . $owner, Logger::DEBUG);
+               Logger::info('Deleting item', ['object' => $activity['object_id'], 'owner'  => $owner]);
                Item::markForDeletion(['uri' => $activity['object_id'], 'owner-id' => $owner]);
        }
 
@@ -238,35 +327,6 @@ class Processor
                }
        }
 
-       /**
-        * Add users to the receiver list of the given public activity.
-        * This is used to ensure that the activity will be stored in every thread.
-        *
-        * @param array $activity Activity array
-        * @return array Modified receiver list
-        */
-       private static function addReceivers(array $activity)
-       {
-               if (!in_array(0, $activity['receiver'])) {
-                       // Private activities will not be modified
-                       return $activity['receiver'];
-               }
-
-               // Add all owners of the referring item to the receivers
-               $original = $receivers = $activity['receiver'];
-               $items = Item::select(['uid'], ['uri' => $activity['object_id']]);
-               while ($item = DBA::fetch($items)) {
-                       $receivers['uid:' . $item['uid']] = $item['uid'];
-               }
-               DBA::close($items);
-
-               if (count($original) != count($receivers)) {
-                       Logger::info('Improved data', ['id' => $activity['id'], 'object' => $activity['object_id'], 'original' => $original, 'improved' => $receivers]);
-               }
-
-               return $receivers;
-       }
-
        /**
         * Prepare the item array for an activity
         *
@@ -277,7 +337,7 @@ class Processor
         */
        public static function createActivity($activity, $verb)
        {
-               $item = [];
+               $item = self::createItem($activity);
                $item['verb'] = $verb;
                $item['thr-parent'] = $activity['object_id'];
                $item['gravity'] = GRAVITY_ACTIVITY;
@@ -285,8 +345,6 @@ class Processor
 
                $item['diaspora_signed_text'] = $activity['diaspora:like'] ?? '';
 
-               $activity['receiver'] = self::addReceivers($activity);
-
                self::postItem($activity, $item);
        }
 
@@ -321,7 +379,7 @@ class Processor
                }
 
                $event_id = Event::store($event);
-               Logger::log('Event '.$event_id.' was stored', Logger::DEBUG);
+               Logger::info('Event was stored', ['id' => $event_id]);
        }
 
        /**
@@ -354,7 +412,7 @@ class Processor
                                        Logger::warning('Unknown parent item.', ['uri' => $item['thr-parent']]);
                                        return false;
                                }
-                               if ($item_private && ($parent['private'] == Item::PRIVATE)) {
+                               if ($item_private && ($parent['private'] != Item::PRIVATE)) {
                                        Logger::warning('Item is private but the parent is not. Dropping.', ['item-uri' => $item['uri'], 'thr-parent' => $item['thr-parent']]);
                                        return false;
                                }
@@ -370,8 +428,8 @@ class Processor
 
                $item['location'] = $activity['location'];
 
-               if (!empty($item['latitude']) && !empty($item['longitude'])) {
-                       $item['coord'] = $item['latitude'] . ' ' . $item['longitude'];
+               if (!empty($activity['latitude']) && !empty($activity['longitude'])) {
+                       $item['coord'] = $activity['latitude'] . ' ' . $activity['longitude'];
                }
 
                $item['app'] = $activity['generator'];
@@ -420,71 +478,12 @@ class Processor
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function postItem($activity, $item)
+       public static function postItem(array $activity, array $item)
        {
-               /// @todo What to do with $activity['context']?
-               if (empty($activity['directmessage']) && ($item['gravity'] != GRAVITY_PARENT) && !Item::exists(['uri' => $item['thr-parent']])) {
-                       Logger::info('Parent not found, message will be discarded.', ['thr-parent' => $item['thr-parent']]);
-                       return;
-               }
-
-               $item['network'] = Protocol::ACTIVITYPUB;
-               $item['author-link'] = $activity['author'];
-               $item['author-id'] = Contact::getIdForURL($activity['author'], 0, true);
-               $item['owner-link'] = $activity['actor'];
-               $item['owner-id'] = Contact::getIdForURL($activity['actor'], 0, true);
-
-               if (in_array(0, $activity['receiver']) && !empty($activity['unlisted'])) {
-                       $item['private'] = Item::UNLISTED;
-               } elseif (in_array(0, $activity['receiver'])) {
-                       $item['private'] = Item::PUBLIC;
-               } else {
-                       $item['private'] = Item::PRIVATE;
-               }
-
-               if (!empty($activity['raw'])) {
-                       $item['source'] = $activity['raw'];
-                       $item['protocol'] = Conversation::PARCEL_ACTIVITYPUB;
-                       $item['conversation-href'] = $activity['context'] ?? '';
-                       $item['conversation-uri'] = $activity['conversation'] ?? '';
-
-                       if (isset($activity['push'])) {
-                               $item['direction'] = $activity['push'] ? Conversation::PUSH : Conversation::PULL;
-                       }
-               }
-
-               $isForum = false;
-
-               if (!empty($activity['thread-completion'])) {
-                       // Store the original actor in the "causer" fields to enable the check for ignored or blocked contacts
-                       $item['causer-link'] = $item['owner-link'];
-                       $item['causer-id'] = $item['owner-id'];
-
-                       Logger::info('Ignoring actor because of thread completion.', ['actor' => $item['owner-link']]);
-                       $item['owner-link'] = $item['author-link'];
-                       $item['owner-id'] = $item['author-id'];
-               } else {
-                       $actor = APContact::getByURL($item['owner-link'], false);
-                       $isForum = ($actor['type'] == 'Group');
-               }
-
-               $item['uri'] = $activity['id'];
-
-               $item['created'] = DateTimeFormat::utc($activity['published']);
-               $item['edited'] = DateTimeFormat::utc($activity['updated']);
-               $item['guid'] = $activity['diaspora:guid'] ?: $activity['sc:identifier'] ?: self::getGUIDByURL($item['uri']);
-
-               $item['uri-id'] = ItemURI::insert(['uri' => $item['uri'], 'guid' => $item['guid']]);
-
-               $item = self::processContent($activity, $item);
                if (empty($item)) {
                        return;
                }
 
-               $item['plink'] = $activity['alternate-url'] ?? $item['uri'];
-
-               $item = self::constructAttachList($activity, $item);
-
                $stored = false;
 
                foreach ($activity['receiver'] as $receiver) {
@@ -494,14 +493,41 @@ class Processor
 
                        $item['uid'] = $receiver;
 
-                       if ($isForum) {
-                               $item['contact-id'] = Contact::getIdForURL($activity['actor'], $receiver, true);
+                       $type = $activity['reception_type'][$receiver] ?? Receiver::TARGET_UNKNOWN;
+                       switch($type) {
+                               case Receiver::TARGET_TO:
+                                       $item['post-type'] = Item::PT_TO;
+                                       break;
+                               case Receiver::TARGET_CC:
+                                       $item['post-type'] = Item::PT_CC;
+                                       break;
+                               case Receiver::TARGET_BTO:
+                                       $item['post-type'] = Item::PT_BTO;
+                                       break;
+                               case Receiver::TARGET_BCC:
+                                       $item['post-type'] = Item::PT_BCC;
+                                       break;
+                               case Receiver::TARGET_FOLLOWER:
+                                       $item['post-type'] = Item::PT_FOLLOWER;
+                                       break;
+                               case Receiver::TARGET_ANSWER:
+                                       $item['post-type'] = Item::PT_COMMENT;
+                                       break;
+                               case Receiver::TARGET_GLOBAL:
+                                       $item['post-type'] = Item::PT_GLOBAL;
+                                       break;
+                               default:
+                                       $item['post-type'] = Item::PT_ARTICLE;
+                       }
+
+                       if ($item['isForum'] ?? false) {
+                               $item['contact-id'] = Contact::getIdForURL($activity['actor'], $receiver);
                        } else {
-                               $item['contact-id'] = Contact::getIdForURL($activity['author'], $receiver, true);
+                               $item['contact-id'] = Contact::getIdForURL($activity['author'], $receiver);
                        }
 
                        if (($receiver != 0) && empty($item['contact-id'])) {
-                               $item['contact-id'] = Contact::getIdForURL($activity['author'], 0, true);
+                               $item['contact-id'] = Contact::getIdForURL($activity['author']);
                        }
 
                        if (!empty($activity['directmessage'])) {
@@ -512,7 +538,7 @@ class Processor
                        if (DI::pConfig()->get($receiver, 'system', 'accept_only_sharer', false) && ($receiver != 0) && ($item['gravity'] == GRAVITY_PARENT)) {
                                $skip = !Contact::isSharingByURL($activity['author'], $receiver);
 
-                               if ($skip && (($activity['type'] == 'as:Announce') || $isForum)) {
+                               if ($skip && (($activity['type'] == 'as:Announce') || ($item['isForum'] ?? false))) {
                                        $skip = !Contact::isSharingByURL($activity['actor'], $receiver);
                                }
 
@@ -545,7 +571,7 @@ class Processor
                        $author = APContact::getByURL($item['owner-link'], false);
                        // We send automatic follow requests for reshared messages. (We don't need though for forum posts)
                        if ($author['type'] != 'Group') {
-                               Logger::log('Send follow request for ' . $item['uri'] . ' (' . $stored . ') to ' . $item['author-link'], Logger::DEBUG);
+                               Logger::info('Send follow request', ['uri' => $item['uri'], 'stored' => $stored, 'to' => $item['author-link']]);
                                ActivityPub\Transmitter::sendFollowObject($item['uri'], $item['author-link']);
                        }
                }
@@ -666,7 +692,7 @@ class Processor
         * @return string fetched message URL
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       public static function fetchMissingActivity($url, $child = [])
+       public static function fetchMissingActivity(string $url, array $child = [])
        {
                if (!empty($child['receiver'])) {
                        $uid = ActivityPub\Receiver::getFirstUserFromReceivers($child['receiver']);
@@ -719,7 +745,7 @@ class Processor
 
                $ldactivity['thread-completion'] = true;
 
-               ActivityPub\Receiver::processActivity($ldactivity, json_encode($activity));
+               ActivityPub\Receiver::processActivity($ldactivity, json_encode($activity), $uid, true, false, [$actor]);
 
                Logger::notice('Activity had been fetched and processed.', ['url' => $url, 'object' => $activity['id']]);
 
@@ -741,6 +767,9 @@ class Processor
                }
 
                $owner = User::getOwnerDataById($uid);
+               if (empty($owner)) {
+                       return;
+               }
 
                $cid = Contact::getIdForURL($activity['actor'], $uid);
                if (!empty($cid)) {
@@ -761,7 +790,7 @@ class Processor
 
                $result = Contact::addRelationship($owner, $contact, $item, false, $note);
                if ($result === true) {
-                       ActivityPub\Transmitter::sendContactAccept($item['author-link'], $item['author-id'], $owner['uid']);
+                       ActivityPub\Transmitter::sendContactAccept($item['author-link'], $activity['id'], $owner['uid']);
                }
 
                $cid = Contact::getIdForURL($activity['actor'], $uid);
@@ -788,8 +817,8 @@ class Processor
                        return;
                }
 
-               Logger::log('Updating profile for ' . $activity['object_id'], Logger::DEBUG);
-               Contact::updateFromProbeByURL($activity['object_id'], true);
+               Logger::info('Updating profile', ['object' => $activity['object_id']]);
+               Contact::updateFromProbeByURL($activity['object_id']);
        }
 
        /**
@@ -801,12 +830,12 @@ class Processor
        public static function deletePerson($activity)
        {
                if (empty($activity['object_id']) || empty($activity['actor'])) {
-                       Logger::log('Empty object id or actor.', Logger::DEBUG);
+                       Logger::info('Empty object id or actor.');
                        return;
                }
 
                if ($activity['object_id'] != $activity['actor']) {
-                       Logger::log('Object id does not match actor.', Logger::DEBUG);
+                       Logger::info('Object id does not match actor.');
                        return;
                }
 
@@ -816,7 +845,7 @@ class Processor
                }
                DBA::close($contacts);
 
-               Logger::log('Deleted contact ' . $activity['object_id'], Logger::DEBUG);
+               Logger::info('Deleted contact', ['object' => $activity['object_id']]);
        }
 
        /**
@@ -835,7 +864,7 @@ class Processor
 
                $cid = Contact::getIdForURL($activity['actor'], $uid);
                if (empty($cid)) {
-                       Logger::log('No contact found for ' . $activity['actor'], Logger::DEBUG);
+                       Logger::info('No contact found', ['actor' => $activity['actor']]);
                        return;
                }
 
@@ -850,7 +879,7 @@ class Processor
 
                $condition = ['id' => $cid];
                DBA::update('contact', $fields, $condition);
-               Logger::log('Accept contact request from contact ' . $cid . ' for user ' . $uid, Logger::DEBUG);
+               Logger::info('Accept contact request', ['contact' => $cid, 'user' => $uid]);
        }
 
        /**
@@ -869,7 +898,7 @@ class Processor
 
                $cid = Contact::getIdForURL($activity['actor'], $uid);
                if (empty($cid)) {
-                       Logger::log('No contact found for ' . $activity['actor'], Logger::DEBUG);
+                       Logger::info('No contact found', ['actor' => $activity['actor']]);
                        return;
                }
 
@@ -877,9 +906,9 @@ class Processor
 
                if (DBA::exists('contact', ['id' => $cid, 'rel' => Contact::SHARING])) {
                        Contact::remove($cid);
-                       Logger::log('Rejected contact request from contact ' . $cid . ' for user ' . $uid . ' - contact had been removed.', Logger::DEBUG);
+                       Logger::info('Rejected contact request - contact removed', ['contact' => $cid, 'user' => $uid]);
                } else {
-                       Logger::log('Rejected contact request from contact ' . $cid . ' for user ' . $uid . '.', Logger::DEBUG);
+                       Logger::info('Rejected contact request', ['contact' => $cid, 'user' => $uid]);
                }
        }
 
@@ -923,10 +952,13 @@ class Processor
                }
 
                $owner = User::getOwnerDataById($uid);
+               if (empty($owner)) {
+                       return;
+               }
 
                $cid = Contact::getIdForURL($activity['actor'], $uid);
                if (empty($cid)) {
-                       Logger::log('No contact found for ' . $activity['actor'], Logger::DEBUG);
+                       Logger::info('No contact found', ['actor' => $activity['actor']]);
                        return;
                }
 
@@ -938,7 +970,7 @@ class Processor
                }
 
                Contact::removeFollower($owner, $contact);
-               Logger::log('Undo following request from contact ' . $cid . ' for user ' . $uid, Logger::DEBUG);
+               Logger::info('Undo following request', ['contact' => $cid, 'user' => $uid]);
        }
 
        /**
@@ -971,10 +1003,10 @@ class Processor
        {
                $parent_terms = Tag::getByURIId($parent['uri-id'], [Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
 
-               $parent_author = Contact::getDetailsByURL($parent['author-link'], 0);
+               $parent_author = Contact::getByURL($parent['author-link'], false, ['url', 'nurl', 'alias']);
 
                $implicit_mentions = [];
-               if (empty($parent_author)) {
+               if (empty($parent_author['url'])) {
                        Logger::notice('Author public contact unknown.', ['author-link' => $parent['author-link'], 'item-id' => $parent['id']]);
                } else {
                        $implicit_mentions[] = $parent_author['url'];
@@ -987,8 +1019,8 @@ class Processor
                }
 
                foreach ($parent_terms as $term) {
-                       $contact = Contact::getDetailsByURL($term['url'], 0);
-                       if (!empty($contact)) {
+                       $contact = Contact::getByURL($term['url'], false, ['url', 'nurl', 'alias']);
+                       if (!empty($contact['url'])) {
                                $implicit_mentions[] = $contact['url'];
                                $implicit_mentions[] = $contact['nurl'];
                                $implicit_mentions[] = $contact['alias'];