Some bug fixes for Avatar Grabber

Replace Exceptions for I/O msg on remote notice validation

ActivityPubPlugin.php

@@ -121,11 +121,9 @@ class ActivityPubPlugin extends Plugin
         $response  = $client->get($url, $headers);
         $res = json_decode($response->getBody(), true);
         $settings = [];
-        try {
-            Activitypub_notice::validate_remote_notice($res);
-        } catch (Exception $e) {
+        if (!Activitypub_notice::validate_remote_notice($res, $msg)) {
             common_debug('ActivityPubPlugin Notice Grabber: Invalid potential remote notice while processing id: '.$url. '. He returned the following: '.json_encode($res, JSON_UNESCAPED_SLASHES));
-            throw $e;
+            throw new Exception($msg);
         }
 
         if (isset($res->inReplyTo)) {

README.md

@@ -31,7 +31,7 @@ GNU Social.
 
 ## Contributing
 
-Please read [CONTRIBUTING.md](CONTRIBUTING.md) for details on our code of conduct, and the process for submitting pull requests to us.
+Please read [CONTRIBUTING.md](CONTRIBUTING.md) for details on our code of conduct, and the process for submitting merge requests to us.
 
 ## Versioning
 

actions/inbox/Create.php

@@ -33,11 +33,9 @@ $valid_object_types = ['Note'];
 
 $res = $data->object;
 
-try {
-    Activitypub_notice::validate_remote_notice((array) $res);
-} catch (Exception $e) {
-    common_debug('ActivityPub Inbox Create Note: Invalid note: '.$e->getMessage());
-    ActivityPubReturn::error($e->getMessage());
+if (!Activitypub_notice::validate_remote_notice((array) $res, $msg)) {
+    common_debug('ActivityPub Inbox Create Note: Invalid note: '.$msg);
+    ActivityPubReturn::error($msg);
 }
 
 $settings = [];

classes/Activitypub_notice.php

@@ -202,39 +202,49 @@ class Activitypub_notice extends Managed_DataObject
      *
      * @author Diogo Cordeiro <diogo@fc.up.pt>
      * @param  Array $data
+     * @param  string $msg I/O
      * @return boolean true in case of success
      * @throws Exception
      */
-    public static function validate_remote_notice($data)
+    public static function validate_remote_notice($data, &$msg)
     {
         if (!isset($data['attributedTo'])) {
             common_debug('ActivityPub Notice Validator: Rejected because attributedTo was not specified.');
-            throw new Exception('No attributedTo specified.');
+            $msg = 'No attributedTo specified.';
+            return false;
         }
         if (!isset($data['id'])) {
             common_debug('ActivityPub Notice Validator: Rejected because Object ID was not specified.');
-            throw new Exception('Object ID not specified.');
+            $msg = 'Object ID not specified.';
+            return false;
         } elseif (!filter_var($data['id'], FILTER_VALIDATE_URL)) {
             common_debug('ActivityPub Notice Validator: Rejected because Object ID is invalid.');
-            throw new Exception('Invalid Object ID.');
+            $msg = 'Invalid Object ID.';
+            return false;
         }
         if (!isset($data['type']) || $data['type'] !== 'Note') {
             common_debug('ActivityPub Notice Validator: Rejected because of Type.');
-            throw new Exception('Invalid Object type.');
+            $msg = 'Invalid Object type.';
+            return false;
         }
         if (!isset($data['content'])) {
             common_debug('ActivityPub Notice Validator: Rejected because Content was not specified.');
-            throw new Exception('Object content was not specified.');
+            $msg = 'Object content was not specified.';
+            return false;
         }
         if (!isset($data['url'])) {
-            throw new Exception('Object URL was not specified.');
+            common_debug('ActivityPub Notice Validator: Rejected because Object URL was not specified.');
+            $msg = 'Object URL was not specified.';
+            return false;
         } elseif (!filter_var($data['url'], FILTER_VALIDATE_URL)) {
             common_debug('ActivityPub Notice Validator: Rejected because Object URL is invalid.');
-            throw new Exception('Invalid Object URL.');
+            $msg = 'Invalid Object URL.';
+            return false;
         }
         if (!isset($data['cc'])) {
             common_debug('ActivityPub Notice Validator: Rejected because Object CC was not specified.');
-            throw new Exception('Object CC was not specified.');
+            $msg = 'Object CC was not specified.';
+            return false;
         }
         return true;
     }

utils/explorer.php

@@ -269,7 +269,12 @@ class Activitypub_explorer
 
         // Avatar
         if (isset($res['icon']['url'])) {
+            try {
                 $this->_store_avatar($profile, $res['icon']['url']);
+            } catch (Exception $e) {
+                // Let the exception go, it isn't a serious issue
+                common_debug('An error ocurred while grabbing remote avatar'.$e->getMessage());
+            }
         }
 
         return $profile;
@@ -297,7 +302,7 @@ class Activitypub_explorer
             $imgData = HTTPClient::quickGet($url);
             // Make sure it's at least an image file. ImageFile can do the rest.
             if (false === getimagesizefromstring($imgData)) {
-                throw new UnsupportedMediaException('Downloaded group avatar was not an image.');
+                throw new UnsupportedMediaException('Downloaded avatar was not an image.');
             }
             file_put_contents($temp_filename, $imgData);
             unset($imgData);    // No need to carry this in memory.