friendica/friendica — pull request #257 by CatoTH (2012-04-22 13:34:29+00:00)
Title: Add a hook in mod/ping.php

I need a way to change the URL of the avatars in notifications etc. I think a hook at this place would be the best way to achieve this.
Here is the addon I need it for: https://github.com/CatoTH/friendica-addons/commit/33ccf200cb441a15d77c0be4b4059fb620d9b92f (an image cache / proxy)