X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FProtocol%2FActivityPub%2FProcessor.php;h=d1c3994e2aee306d275ff94435d80866f8a714e1;hb=6abb4d40d6456f58a748077f161f5101b4048659;hp=aa169ab028b31c508f06b27da8d60de08ed1e6eb;hpb=073695b33c5f9c5d89d91958b09259c59e12dd98;p=friendica.git

diff --git a/src/Protocol/ActivityPub/Processor.php b/src/Protocol/ActivityPub/Processor.php
index aa169ab028..d1c3994e2a 100644
--- a/src/Protocol/ActivityPub/Processor.php
+++ b/src/Protocol/ActivityPub/Processor.php
@@ -45,7 +45,9 @@ use Friendica\Protocol\Activity;
 use Friendica\Protocol\ActivityPub;
 use Friendica\Protocol\Relay;
 use Friendica\Util\DateTimeFormat;
+use Friendica\Util\HTTPSignature;
 use Friendica\Util\JsonLD;
+use Friendica\Util\Network;
 use Friendica\Util\Strings;
 use Friendica\Worker\Delivery;
 
@@ -301,6 +303,11 @@ class Processor
 			Logger::notice('Parent not found. Try to refetch it.', ['parent' => $activity['reply-to-id'], 'recursion-depth' => $recursion_depth]);
 			if ($recursion_depth < 10) {
 				$result = self::fetchMissingActivity($activity['reply-to-id'], $activity, '', Receiver::COMPLETION_AUTO);
+				if (empty($result) && self::ActivityIsGone($activity['reply-to-id'])) {
+					// Recursively delete this and all depending entries
+					Queue::deleteById($activity['entry-id']);
+					return [];
+				}
 				$fetch_by_worker = empty($result);
 			} else {
 				Logger::notice('Recursion level is too high.', ['parent' => $activity['reply-to-id'], 'recursion-depth' => $recursion_depth]);
@@ -452,6 +459,24 @@ class Processor
 		return $item;
 	}
 
+	/**
+	 * Check if a given activity is no longer available
+	 *
+	 * @param string $url
+	 *
+	 * @return boolean
+	 */
+	private static function ActivityIsGone(string $url): bool
+	{
+		$curlResult = HTTPSignature::fetchRaw($url, 0);
+
+		if (Network::isUrlBlocked($url)) {
+			return true;
+		}
+
+		// @todo To ensure that the remote system is working correctly, we can check if the "Content-Type" contains JSON
+		return in_array($curlResult->getReturnCode(), [404]);
+	}
 	/**
 	 * Delete items
 	 *
@@ -551,16 +576,13 @@ class Processor
 			}
 		}
 
-		if ($activity['target_id'] != $actor['featured']) {
-			return null;
-		}
-
-		$id = Contact::getIdForURL($activity['actor']);
-		if (empty($id)) {
-			return null;
+		$parent = Post::selectFirst(['uri-id'], ['uri' => $activity['object_id']]);
+		if (empty($parent['uri-id'])) {
+			if (self::fetchMissingActivity($activity['object_id'], $activity, '', Receiver::COMPLETION_AUTO)) {
+				$parent = Post::selectFirst(['uri-id'], ['uri' => $activity['object_id']]);
+			}
 		}
 
-		$parent = Post::selectFirst(['uri-id'], ['uri' => $activity['object_id'], 'author-id' => $id]);
 		if (!empty($parent['uri-id'])) {
 			return $parent['uri-id'];
 		}
@@ -936,6 +958,9 @@ class Processor
 				$success = true;
 			} else {
 				Logger::notice('Item insertion aborted', ['uri' => $item['uri'], 'uid' => $item['uid']]);
+				if (Item::isTooOld($item) || !Item::isValid($item)) {
+					Queue::remove($activity);
+				}
 			}
 
 			if ($item['uid'] == 0) {
@@ -1191,20 +1216,27 @@ class Processor
 			return '';
 		}
 
-		if (!empty($object['actor'])) {
-			$object_actor = $object['actor'];
-		} elseif (!empty($object['attributedTo'])) {
-			$object_actor = $object['attributedTo'];
-			if (is_array($object_actor)) {
+		$signer = [];
+
+		if (!empty($object['attributedTo'])) {
+			$attributed_to = $object['attributedTo'];
+			if (is_array($attributed_to)) {
 				$compacted = JsonLD::compact($object);
-				$object_actor = JsonLD::fetchElement($compacted, 'as:attributedTo', '@id');
+				$attributed_to = JsonLD::fetchElement($compacted, 'as:attributedTo', '@id');
 			}
+			$signer[] = $attributed_to;	
+		}
+
+		if (!empty($object['actor'])) {
+			$object_actor = $object['actor'];
+		} elseif (!empty($attributed_to)) {
+			$object_actor = $attributed_to;
 		} else {
 			// Shouldn't happen
 			$object_actor = '';
 		}
 
-		$signer = [$object_actor];
+		$signer[] = $object_actor;
 
 		if (!empty($child['author'])) {
 			$actor = $child['author'];