updated plugin ActivityPub version 2.2.0

wp-content/plugins/activitypub/includes/class-webfinger.php

@@ -42,16 +42,31 @@ class Webfinger {
 			return $data;
 		}
 
+		if ( ! is_array( $data ) || empty( $data['links'] ) ) {
+			return new WP_Error(
+				'webfinger_missing_links',
+				__( 'No valid Link elements found.', 'activitypub' ),
+				$data
+			);
+		}
+
 		foreach ( $data['links'] as $link ) {
 			if (
 				'self' === $link['rel'] &&
-				'application/activity+json' === $link['type']
+				(
+					'application/activity+json' === $link['type'] ||
+					'application/ld+json; profile="https://www.w3.org/ns/activitystreams"' === $link['type']
+				)
 			) {
 				return $link['href'];
 			}
 		}
 
-		return new WP_Error( 'webfinger_url_no_activitypub', null, $data );
+		return new WP_Error(
+			'webfinger_url_no_activitypub',
+			__( 'The Site supports WebFinger but not ActivityPub', 'activitypub' ),
+			$data
+		);
 	}
 
 	/**