Implement #2395 for nijie twitter and tumblr

app/logical/downloads/file.rb

@@ -57,6 +57,9 @@ module Downloads
     def after_download(src)
       src = fix_image_board_sources(src)
       src = fix_twitter_sources(src)
+      if options[:referer_url].present?
+        src = set_source_to_referer(src)
+      end
       src
     end
 
@@ -131,5 +134,14 @@ module Downloads
         src
       end
     end
+
+    def set_source_to_referer(src)
+      if Sources::Strategies::Nijie.url_match?(src) || Sources::Strategies::Twitter.url_match?(src) || Sources::Strategies::Tumblr.url_match?(src)
+        strategy = Sources::Site.new(src, :referer_url => options[:referer_url])
+        strategy.referer_url
+      else
+        src
+      end
+    end
   end
 end