Last updated on June 3, 2013.
Log in a user using a pre-authenticated user login token.
This is the second step of a single sign-on process. If you have
login_token=abcdef12345, redirect the client you was to be logged in to this URL:
|login_token (required)||The user login token.|
The minimum required permission level is:
A plain, unstyled error message if the
login_token is invalid, consumed or expired.
Otherwise the client is redirected to the
return_url you specified when the token was created.