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Using OAuth token from Facebook Login as a password

0

How do I properly replace username/password authentication server-side, and instead authenticate a user using an OAuth token (From Facebook login)? I'm new to OAuth, and usually use password based systems, so help is kindly appreciated.

The plan is this:
1) User goes on my site and clicks "Login with Facebook", logs in
2) My site would then get the OAuth token + user email from FB, and send it to my server, which would make an account (Username= user's FB email, password= OAuth token), and the email/ token would also save to localStorage for the user
3) When the user returns to the site, it would try to login to my server with the saved localStorage email (username) and token (password).

How do I validate that the token is valid from FB server-side upon login (to prove that the user controls that email)? Also, is it a good idea to use the first gotten token as a password, or can the token change on later logins, eg from another browser? If it changes, I would need to validate the token on every login, right?

Thanks for any advice, STAN

authentication login oauth-2.0 passwords facebook-login

share|improve this question

edited Mar 7 at 19:30

Stan Tatarnykov

asked Mar 7 at 6:45

Stan TatarnykovStan Tatarnykov

428711

add a comment | 

0

How do I properly replace username/password authentication server-side, and instead authenticate a user using an OAuth token (From Facebook login)? I'm new to OAuth, and usually use password based systems, so help is kindly appreciated.

The plan is this:
1) User goes on my site and clicks "Login with Facebook", logs in
2) My site would then get the OAuth token + user email from FB, and send it to my server, which would make an account (Username= user's FB email, password= OAuth token), and the email/ token would also save to localStorage for the user
3) When the user returns to the site, it would try to login to my server with the saved localStorage email (username) and token (password).

How do I validate that the token is valid from FB server-side upon login (to prove that the user controls that email)? Also, is it a good idea to use the first gotten token as a password, or can the token change on later logins, eg from another browser? If it changes, I would need to validate the token on every login, right?

Thanks for any advice, STAN

authentication login oauth-2.0 passwords facebook-login

share|improve this question

edited Mar 7 at 19:30

Stan Tatarnykov

asked Mar 7 at 6:45

Stan TatarnykovStan Tatarnykov

428711

add a comment | 

How do I properly replace username/password authentication server-side, and instead authenticate a user using an OAuth token (From Facebook login)? I'm new to OAuth, and usually use password based systems, so help is kindly appreciated.

The plan is this:
1) User goes on my site and clicks "Login with Facebook", logs in
2) My site would then get the OAuth token + user email from FB, and send it to my server, which would make an account (Username= user's FB email, password= OAuth token), and the email/ token would also save to localStorage for the user
3) When the user returns to the site, it would try to login to my server with the saved localStorage email (username) and token (password).

How do I validate that the token is valid from FB server-side upon login (to prove that the user controls that email)? Also, is it a good idea to use the first gotten token as a password, or can the token change on later logins, eg from another browser? If it changes, I would need to validate the token on every login, right?

Thanks for any advice, STAN

authentication login oauth-2.0 passwords facebook-login

share|improve this question

edited Mar 7 at 19:30

Stan Tatarnykov

asked Mar 7 at 6:45

Stan TatarnykovStan Tatarnykov

428711

share|improve this question

edited Mar 7 at 19:30

Stan Tatarnykov

asked Mar 7 at 6:45

Stan TatarnykovStan Tatarnykov

428711

share|improve this question

edited Mar 7 at 19:30

Stan Tatarnykov

asked Mar 7 at 6:45

Stan TatarnykovStan Tatarnykov

428711

asked Mar 7 at 6:45

Stan TatarnykovStan Tatarnykov

428711

asked Mar 7 at 6:45

Stan TatarnykovStan Tatarnykov

428711