http_openid:openid

Call hook on the OpenID management library. Defined hooks are:

login(+OpenID): Consider OpenID logged in.
logout(+OpenID): Logout OpenID
logged_in(?OpenID): True if OpenID is logged in
grant(+Request, +Options): Server: Reply positive on OpenID
trusted(+OpenID, +Server): True if Server is a trusted OpenID server
ax(Values): Called if the server provided AX attributes
x_parameter(+Server, -Name, -Value): Called to find additional HTTP parameters to send with the OpenID verify request.