Process additional PHP file on login

I'm really not sure what you're asking for here. Can you explain a bit more? In general, I'd highly recommend either creating a user plugin (which is called by Joomla itself) or a socialprofile plugin (which is specific to JFBConnect) and add your code there. That will allow you to execute whatever code you want during logins, without having to modify our code after every update.

Please be aware that if you redirect the user in the middle of the authentication process, you could cause some issues though if the full JFBConnect registration/login process hasn't fully completed.

Either way, I hope the above gives you some ideas, but if you need any more information or help, again let me know specifically what you're looking for, and we'll gladly help.

Thanks,
Alex

That isn't something I think would be appropriate for adding to JFBConnect. If you're already redirecting the user to their Profile page in CB, that should be where you add whatever code you need. The user will have to be redirected after they click the social login button. Our login process will happen as expected. Once the authentication happens, JFBConnect redirects and transfers control to whatever menu item you've set.. in your case, CB.

In the CB profile page, you can add Javascript to put up a modal or there may even be CB-specific addons already to do what you're looking for. However, that's outside of the scope of JFBConnect.

I hope that helps explain, but should you have any other questions or need any help, just let me know.

Thanks,
Alex