improve error messages and codes (#532)

* improve error messages and codes

* version bump

Author: pfefferle

README.md

@@ -3,7 +3,7 @@
 **Tags:** OStatus, fediverse, activitypub, activitystream  
 **Requires at least:** 4.7  
 **Tested up to:** 6.3  
-**Stable tag:** 1.0.9  
+**Stable tag:** 1.0.10  
 **Requires PHP:** 5.6  
 **License:** MIT  
 **License URI:** http://opensource.org/licenses/MIT  
@@ -105,6 +105,10 @@ Where 'blog' is the path to the subdirectory at which your blog resides.
 
 Project maintained on GitHub at [automattic/wordpress-activitypub](https://github.com/automattic/wordpress-activitypub).
 
+### 1.0.10 ###
+
+* Improved: better error messages if remote profile is not accessible
+
 ### 1.0.9 ###
 
 * Fixed: broken following endpoint

activitypub.php

@@ -3,7 +3,7 @@
  * Plugin Name: ActivityPub
  * Plugin URI: https://github.com/pfefferle/wordpress-activitypub/
  * Description: The ActivityPub protocol is a decentralized social networking protocol based upon the ActivityStreams 2.0 data format.
- * Version: 1.0.9
+ * Version: 1.0.10
  * Author: Matthias Pfefferle & Automattic
  * Author URI: https://automattic.com/
  * License: MIT

includes/class-signature.php

@@ -328,7 +328,7 @@ public static function verify_http_signature( $request ) {
 	public static function get_remote_key( $key_id ) { // phpcs:ignore
 		$actor = get_remote_metadata_by_actor( strip_fragment_from_url( $key_id ) ); // phpcs:ignore
 		if ( \is_wp_error( $actor ) ) {
-			return $actor;
+			return new WP_Error( 'activitypub_no_remote_profile_found', __( 'No Profile found or Profile not accessible', 'activitypub' ), array( 'status' => 401 ) );
 		}
 		if ( isset( $actor['publicKey']['publicKeyPem'] ) ) {
 			return \rtrim( $actor['publicKey']['publicKeyPem'] ); // phpcs:ignore

readme.txt

@@ -3,7 +3,7 @@ Contributors: automattic, pfefferle, mediaformat, mattwiebe, akirk, jeherve, nur
 Tags: OStatus, fediverse, activitypub, activitystream
 Requires at least: 4.7
 Tested up to: 6.3
-Stable tag: 1.0.9
+Stable tag: 1.0.10
 Requires PHP: 5.6
 License: MIT
 License URI: http://opensource.org/licenses/MIT
@@ -105,6 +105,10 @@ Where 'blog' is the path to the subdirectory at which your blog resides.
 
 Project maintained on GitHub at [automattic/wordpress-activitypub](https://github.com/automattic/wordpress-activitypub).
 
+= 1.0.10 =
+
+* Improved: better error messages if remote profile is not accessible
+
 = 1.0.9 =
 
 * Fixed: broken following endpoint