Process incoming tag add requests

diff --git a/src/Protocol/ActivityPub/Processor.php b/src/Protocol/ActivityPub/Processor.php
index 045c48a..a5f6607 100644 (file)
--- a/src/Protocol/ActivityPub/Processor.php
+++ b/src/Protocol/ActivityPub/Processor.php
@@ -198,6 +198,43 @@ class Processor
                Item::delete(['uri' => $activity['object_id'], 'owner-id' => $owner]);
        }
 
+       /**
+        * Prepare the item array for an activity
+        *
+        * @param array $activity Activity array
+        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+        * @throws \ImagickException
+        */
+       public static function addTag($activity)
+       {
+               if (empty($activity['object_content']) || empty($activity['object_id'])) {
+                       return;
+               }
+
+               foreach ($activity['receiver'] as $receiver) {
+                       $item = Item::selectFirst(['id', 'tag', 'origin', 'author-link'], ['uri' => $activity['target_id'], 'uid' => $receiver]);
+                       if (!DBA::isResult($item)) {
+                               // We don't fetch missing content for this purpose
+                               continue;
+                       }
+
+                       if (($item['author-link'] != $activity['actor']) && !$item['origin']) {
+                               Logger::info('Not origin, not from the author, skipping update', ['id' => $item['id'], 'author' => $item['author-link'], 'actor' => $activity['actor']]);
+                               continue;
+                       }
+
+                       // To-Do:
+                       // - Check if "blocktag" is set
+                       // - Check if actor is a contact
+
+                       if (!stristr($item['tag'], trim($activity['object_content']))) {
+                               $tag = $item['tag'] . (strlen($item['tag']) ? ',' : '') . '#[url=' . $activity['object_id'] . ']'. $activity['object_content'] . '[/url]';
+                               Item::update(['tag' => $tag], ['id' => $item['id']]);
+                               Logger::info('Tagged item', ['id' => $item['id'], 'tag' => $activity['object_content'], 'uri' => $activity['target_id'], 'actor' => $activity['actor']]);
+                       }
+               }
+       }
+
        /**
         * Prepare the item array for an activity
         *

diff --git a/src/Protocol/ActivityPub/Receiver.php b/src/Protocol/ActivityPub/Receiver.php
index 74d9392..97bd7dc 100644 (file)
--- a/src/Protocol/ActivityPub/Receiver.php
+++ b/src/Protocol/ActivityPub/Receiver.php
@@ -226,6 +226,13 @@ class Receiver
                        $object_data['author'] = JsonLD::fetchElement($activity, 'as:actor', '@id');
                        $object_data['object_id'] = $object_id;
                        $object_data['object_type'] = ''; // Since we don't fetch the object, we don't know the type
+               } elseif (in_array($type, ['as:Add'])) {
+                       $object_data = [];
+                       $object_data['id'] = JsonLD::fetchElement($activity, '@id');
+                       $object_data['target_id'] = JsonLD::fetchElement($activity, 'as:target', '@id');
+                       $object_data['object_id'] = JsonLD::fetchElement($activity, 'as:object', '@id');
+                       $object_data['object_type'] = JsonLD::fetchElement($activity['as:object'], '@type');
+                       $object_data['object_content'] = JsonLD::fetchElement($activity['as:object'], 'as:content', '@type');
                } else {
                        $object_data = [];
                        $object_data['id'] = JsonLD::fetchElement($activity, '@id');
@@ -366,6 +373,12 @@ class Receiver
                                }
                                break;
 
+                       case 'as:Add':
+                               if ($object_data['object_type'] == 'as:tag') {
+                                       ActivityPub\Processor::addTag($object_data);
+                               }
+                               break;
+
                        case 'as:Announce':
                                if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
                                        $profile = APContact::getByURL($object_data['actor']);