fixes #2203

app/logical/daily_maintenance.rb

@@ -8,6 +8,7 @@ class DailyMaintenance
     Delayed::Job.delete_all(['created_at < ?', 7.days.ago])
     PostVote.delete_all(['created_at < ?', 1.month.ago])
     CommentVote.delete_all(['created_at < ?', 1.month.ago])
+    UserUploadClamper.new.clamp_all!
     TagSubscription.process_all
     ApiCacheGenerator.new.generate_tag_cache
   end

app/logical/user_upload_clamper.rb

@@ -0,0 +1,22 @@
+class UserUploadClamper
+  def clamp_all!
+    users.each do |user|
+      if clamp_user?(user)
+        clamp_user!(user)
+      end
+    end
+  end
+
+  def users
+    User.where("post_upload_count >= 200 and (base_upload_limit > 10 or base_upload_limit is null) and level < ?", User::Levels::CONTRIBUTOR).limit(50)
+  end
+
+  def clamp_user?(user)
+    Reports::UserPromotions.deletion_confidence_interval_for(user) >= 25
+  end
+
+  def clamp_user!(user)
+    user.update_attribute(:base_upload_limit, -1)
+    ModAction.create(:description => "user ##{user.id} (#{user.name}) clamped")
+  end
+end