- To better support having multiple downstream providers configured,
the authorize endpoint will share a CSRF cookie between all
downstream providers' authorize endpoints. The first time a
user's browser hits the authorize endpoint of any downstream
provider, that endpoint will set the cookie. Then if the user
starts an authorize flow with that same downstream provider or with
any other downstream provider which shares the same domain name
(i.e. differentiated by issuer path), then the same cookie will be
submitted and respected.
- Just in case we are sharing the domain name with some other app,
we sign the value of any new CSRF cookie and check the signature
when we receive the cookie. This wasn't strictly necessary since
we probably won't share a domain name with other apps, but it
wasn't hard to add this cookie signing.
Signed-off-by: Ryan Richard <richardry@vmware.com>
080bb594b2