[ActivityPub] Fix note URIs

plugins/ActivityPub/ActivityPubPlugin.php

@@ -97,8 +97,8 @@ class ActivityPubPlugin extends Plugin
             // Look for a local notice (unfortunately GNU social doesn't
             // provide this functionality natively)
             try {
-                $candidate = Notice::getByID((int)substr($url, (strlen(common_local_url('apNotice', ['id' => 0]))-1)));
-                if (common_local_url('apNotice', ['id' => $candidate->getID()]) === $url) { // Sanity check
+                $candidate = Notice::getByID((int)substr($url, (strlen(Activitypub_notice::note_uri(0))-1)));
+                if (Activitypub_notice::note_uri($candidate->getID()) === $url) { // Sanity check
                     return $candidate;
                 } else {
                     common_debug('ActivityPubPlugin Notice Grabber: '.$candidate->getUrl(). ' is different of '.$url);
@@ -196,6 +196,12 @@ class ActivityPubPlugin extends Plugin
             $acceptHeaders
         );
 
+        $m->connect(
+            'object/note/:id',
+            ['action' => 'apNotice'],
+            ['id'     => '[0-9]+'],
+        );
+
         $m->connect(
             'user/:id/liked.json',
             ['action' => 'apActorLiked'],

plugins/ActivityPub/actions/apactoroutbox.php

@@ -124,6 +124,7 @@ class apActorOutboxAction extends ManagedAction
             if ($note->object_type == 'http://activitystrea.ms/schema/1.0/note') {
                 $notices[] = Activitypub_create::create_to_array(
                     $note->getProfile()->getUri(),
+                    common_local_url('apNotice', ['id' => $note->getID()]),
                     Activitypub_notice::notice_to_array($note)
                 );
             }

plugins/ActivityPub/lib/models/Activitypub_create.php

@@ -40,16 +40,17 @@ class Activitypub_create
      * Generates an ActivityPub representation of a Create
      *
      * @param string $actor
-     * @param array $object
+     * @param string $uri
+     * @param mixed $object
      * @param bool $directMessage whether it is a private Create activity or not
      * @return array pretty array to be used in a response
      * @author Diogo Cordeiro <diogo@fc.up.pt>
      */
-    public static function create_to_array(string $actor, array $object, bool $directMessage = false): array
+    public static function create_to_array(string $actor, string $uri, $object, bool $directMessage = false): array
     {
         $res = [
             '@context' => 'https://www.w3.org/ns/activitystreams',
-            'id' => $object['id'] . '#create',
+            'id' => $uri,
             'type' => 'Create',
             'directMessage' => $directMessage,
             'to' => $object['to'],

plugins/ActivityPub/lib/models/Activitypub_notice.php

@@ -100,7 +100,7 @@ class Activitypub_notice
         } else { // Note
             $item = [
                 '@context' => 'https://www.w3.org/ns/activitystreams',
-                'id' => self::getUri($notice),
+                'id' => self::note_uri($notice->getID()),
                 'type' => 'Note',
                 'published' => str_replace(' ', 'T', $notice->getCreated()) . 'Z',
                 'url' => $notice->getUrl(),
@@ -310,6 +310,7 @@ class Activitypub_notice
      * @throws InvalidUrlException
      * @throws Exception
      * @author Bruno Casteleiro <brunoccast@fc.up.pt>
+     * @see note_uri when it's not a generic activity but a object type note
      */
     public static function getUri(Notice $notice): string
     {
@@ -320,6 +321,19 @@ class Activitypub_notice
         }
     }
 
+    /**
+     * Use this if your Notice is in fact a note
+     *
+     * @param int $id
+     * @return string it's uri
+     * @author Diogo Cordeiro <diogo@fc.up.pt>
+     * @see getUri for every other activity that aren't objects of a certain type like note
+     */
+    public static function note_uri(int $id): string
+    {
+        return common_root_url() . 'object/note/' . $id;
+    }
+
     /**
      * Extract note policy type from note targets.
      *

plugins/ActivityPub/lib/models/Activitypub_tombstone.php

@@ -48,7 +48,7 @@ class Activitypub_tombstone
         $dead = Deleted_notice::getByID($id);
         $res = [
             '@context' => 'https://www.w3.org/ns/activitystreams',
-            'id'       => Activitypub_notice::getUri($id),
+            'id'       => Activitypub_notice::note_uri($id),
             'type'     => 'Tombstone',
             'created'  => str_replace(' ', 'T', $dead->act_created) . 'Z',
             'deleted'  => str_replace(' ', 'T', $dead->created) . 'Z'

plugins/ActivityPub/lib/postman.php

@@ -290,6 +290,7 @@ class Activitypub_postman
     {
         $data = Activitypub_create::create_to_array(
             $this->actor_uri,
+            common_local_url('apNotice', ['id' => $notice->getID()]),
             Activitypub_notice::notice_to_array($notice)
         );
         $data = json_encode($data, JSON_UNESCAPED_SLASHES);
@@ -321,6 +322,7 @@ class Activitypub_postman
     {
         $data = Activitypub_create::create_to_array(
             $this->actor_uri,
+            common_local_url('apNotice', ['id' => $message->getID()]),
             Activitypub_message::message_to_array($message),
             true
         );