Relay posts with the original protocol

src/Protocol/ActivityPub/Transmitter.php

@@ -469,6 +469,20 @@ class Transmitter
 		return $permissions;
 	}
 
+	/**
+	 * Check if the given item id is from ActivityPub
+	 *
+	 * @param integer $item_id
+	 * @return boolean "true" if the post is from ActivityPub
+	 */
+	private static function isAPPost(int $item_id) {
+		if (empty($item_id)) {
+			return false;
+		}
+
+		return Item::exists(['id' => $item_id, 'network' => Protocol::ACTIVITYPUB]);
+	}
+
 	/**
 	 * Creates an array of permissions from an item thread
 	 *
@@ -501,7 +515,7 @@ class Transmitter
 			$always_bcc = true;
 		}
 
-		if (self::isAnnounce($item) || DI::config()->get('debug', 'total_ap_delivery')) {
+		if (self::isAnnounce($item) || DI::config()->get('debug', 'total_ap_delivery') || self::isAPPost($last_id)) {
 			// Will be activated in a later step
 			$networks = Protocol::FEDERATED;
 		} else {
@@ -680,12 +694,13 @@ class Transmitter
 	 *
 	 * @param integer $uid      User ID
 	 * @param boolean $personal fetch personal inboxes
+	 * @param boolean $all_ap   Retrieve all AP enabled inboxes
 	 *
 	 * @return array of follower inboxes
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	public static function fetchTargetInboxesforUser($uid, $personal = false)
+	public static function fetchTargetInboxesforUser($uid, $personal = false, bool $all_ap = false)
 	{
 		$inboxes = [];
 
@@ -698,7 +713,7 @@ class Transmitter
 			}
 		}
 
-		if (DI::config()->get('debug', 'total_ap_delivery')) {
+		if (DI::config()->get('debug', 'total_ap_delivery') || $all_ap) {
 			// Will be activated in a later step
 			$networks = Protocol::FEDERATED;
 		} else {
@@ -793,7 +808,7 @@ class Transmitter
 				}
 
 				if ($item_profile && ($receiver == $item_profile['followers']) && ($uid == $profile_uid)) {
-					$inboxes = array_merge($inboxes, self::fetchTargetInboxesforUser($uid, $personal));
+					$inboxes = array_merge($inboxes, self::fetchTargetInboxesforUser($uid, $personal, self::isAPPost($last_id)));
 				} else {
 					if (Contact::isLocal($receiver)) {
 						continue;

src/Protocol/Diaspora.php

@@ -3031,7 +3031,18 @@ class Diaspora
 			$owner['uprvkey'] = $owner['prvkey'];
 		}
 
-		$envelope = self::buildMessage($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
+		// When sending content to Friendica contacts using the Diaspora protocol
+		// we have to fetch the public key from the fcontact.
+		// This is due to the fact that legacy DFRN had unique keys for every contact.
+		$pubkey = $contact['pubkey'];
+		if (!empty($contact['addr'])) {
+			$fcontact = FContact::getByURL($contact['addr']);
+			if (!empty($fcontact)) {
+				$pubkey = $fcontact['pubkey'];
+			}
+		}
+
+		$envelope = self::buildMessage($msg, $owner, $contact, $owner['uprvkey'], $pubkey, $public_batch);
 
 		$return_code = self::transmit($owner, $contact, $envelope, $public_batch, $guid);
 

src/Worker/Delivery.php

@@ -141,13 +141,7 @@ class Delivery
 				}
 			}
 
-			// When commenting too fast after delivery, a post wasn't recognized as top level post.
+			$top_level = $target_item['gravity'] == GRAVITY_PARENT;
-			// The count then showed more than one entry. The additional check should help.
-			// The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
-			if ((($parent['id'] == $target_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
-				Logger::log('Top level post');
-				$top_level = true;
-			}
 
 			// This is IMPORTANT!!!!
 
@@ -211,7 +205,8 @@ class Delivery
 		// Transmit via Diaspora if the thread had started as Diaspora post.
 		// Also transmit via Diaspora if this is a direct answer to a Diaspora comment.
 		// This is done since the uri wouldn't match (Diaspora doesn't transmit it)
-		if (!empty($parent) && !empty($thr_parent) && in_array(Protocol::DIASPORA, [$parent['network'], $thr_parent['network']])) {
+		// Also transmit relayed posts from Diaspora contacts via Diaspora.
+		if (!empty($parent) && !empty($thr_parent) && in_array(Protocol::DIASPORA, [$parent['network'], $thr_parent['network'], $target_item['network']])) {
 			$contact['network'] = Protocol::DIASPORA;
 		}
 

src/Worker/Notifier.php

@@ -133,10 +133,7 @@ class Notifier
 				}
 			}
 
-			if ((count($items) == 1) && ($items[0]['id'] === $target_item['id']) && ($items[0]['uri'] === $items[0]['parent-uri'])) {
+			$top_level = $target_item['gravity'] == GRAVITY_PARENT;
-				Logger::info('Top level post', ['target' => $target_id]);
-				$top_level = true;
-			}
 		}
 
 		$owner = User::getOwnerDataById($uid);
@@ -779,6 +776,11 @@ class Notifier
 			return 0;
 		}
 
+		// Posts from Diaspora contacts are transmitted via Diaspora
+		if ($target_item['network'] == Protocol::DIASPORA) {
+			return 0;
+		}
+
 		$inboxes = [];
 		$relay_inboxes = [];