About the owncloud external user

Hello, everyone.
I wanna to know whether the external_user could finish the auth with my own service.
I have enabled the external_user, and I write a class like OC_User_FTP, and I config the app.php and config.php. who can tell me what should I do to make it


anyone knows? I need help.:sweat:

did you follow the instructions on the administrators guide (https://doc.owncloud.org/server/9.0/ownCloud_Server_Administration_Manual.pdf)?

maybe you simply havent installed a php-module?

Please don't push a thread within a few hours since your last post...