We have an external login system which creates set of cookies. My joomla site and external site (which is responsible to login a user) are on the same domain so I can access the cookies being set by external site. I want to login user automatically using those cookies in Joomla if user exists and if user doesn't exists, I want to create a user and log them in automatically.
Can someone please point me in a right direction what plugin to use so that it is a seamless experience to a user and user will never realize that they are being authenticated in some other system and logged in automatically?
If someone has done it before, and post the code snippet, that will be very helpful so that I don't have to re-invent the wheel