Fix #3982: Uploads: URI::InvalidURIError - URI must be ascii only.

app/models/upload.rb

@@ -135,6 +135,24 @@ class Upload < ApplicationRecord
     end
   end
 
+  module SourceMethods
+    def source=(source)
+      source = source.unicode_normalize(:nfc)
+
+      # percent encode unicode characters in urls
+      if source =~ %r!\Ahttps?://!i
+        source = Addressable::URI.normalized_encode(source) rescue source
+      end
+
+      super(source)
+    end
+
+    def source_url
+      return nil unless source =~ %r!\Ahttps?://!i
+      Addressable::URI.heuristic_parse(source) rescue nil
+    end
+  end
+
   module UploaderMethods
     def uploader_name
       User.id_to_name(uploader_id)
@@ -233,6 +251,7 @@ class Upload < ApplicationRecord
   include VideoMethods
   extend SearchMethods
   include ApiMethods
+  include SourceMethods
 
   def uploader_is_not_limited
     if !uploader.can_upload?