I’m currently planning a new Yii based application and want to publish the result under some open source licence. After exploring the extension library I start to wonder under which licence they are published. Couldn’t find any notes or author, copy right holder, licence in most of the extensions I consider to use for my project.
Does anyone know under which licence the extensions are published? I mean do the uploader agree to some licence by uploading it?
If no how would you suggest shall I get clearance for all the code I’d like to use?