[keycloak-user] Login to Keycloak using API and create KeycloakPrincipal object

[Stian Thorgersen]

On 13 October 2016 at 21:46, Chris Savory <chris.savory at edlogics.com> wrote:

> Stian,
>
> We aren’t using the Keycloak registration because our app has been
> existing for a couple of years before the current Kc integration.  Our
> onboarding/registration process is pretty extensive and is about a 10 page
> angular flow that uses XHR requests to our server to create the data.
>  Converting it over to using the Kc page that does a form/post would be
> very difficult for us.
>

Sounds like you have a valid requirement for using an external registration
page. We have considered in the past to add the ability to do that, but it
was left as just an open idea.

One option would be to implement this yourself with a custom authenticator.
Once you've completed the registration process you could issue a temporary
authentication token then redirect the user to authenticate on Keycloak.
The custom authenticator could then verify this token and authenticate the
user.


>
> I’m curious why do you say: “You need to do the redirect based
> authentication and not use direct grant if you want an SSO session.”
> Is this a requirement or just a best practice?
>

Requirement. If you want SSO with a centralized IdP you need to use
redirect based authentication.


>
> I ran a test with this scenario and I’m able to get a password based grant
> from our admin_cli client and then go to our app with that token (app is
> using a different, confidential client that is has the Spring Security KC
> adapter configured) and it will not only recognize that token, but also
> establish a session for me.
>

You will only be authenticated to the application, but not have an SSO
session.


>
> --
> Christopher Savory
>
>
>
>
> From: Stian Thorgersen <sthorger at redhat.com>
> Reply-To: "stian at redhat.com" <stian at redhat.com>
> Date: Thursday, October 13, 2016 at 1:11 AM
> To: Chris Savory <chris.savory at edlogics.com>
> Cc: "Mariusz Chruscielewski - Info.nl" <mariusz at info.nl>, "
> keycloak-user at lists.jboss.org" <keycloak-user at lists.jboss.org>, David
> Hartfield <david.hartfield at edlogics.com>
> Subject: Re: [keycloak-user] Login to Keycloak using API and create
> KeycloakPrincipal object
>
> You need to do the redirect based authentication and not use direct grant
> if you want an SSO session.
>
> Why are you not just using the registration form on the Keycloak server?
> It can be changed to match exactly what you need?
>
> On 10 October 2016 at 15:30, Chris Savory <chris.savory at edlogics.com>
> wrote:
> I actually had a similar question for our register user workflow.  We are
> registering users on our site using our own custom registration form; in
> this flow we use the Admin client to create the user in keycloak.  Since
> the user just gave us their un/pw it doesn’t make sense for us to send them
> over to Keycloak to login, but rather we would like to passively log them
> in either via the backend or via some ajax call.
>
> I know I can get a token if I do something like this, but I’m not sure if
> it’s going to drop all the right cookies back to the user’s browser to
> consider them logged in across all the clients:
>
> curl   -d "client_id=admin-cli"   -d "username=chris.savory at edlogics.com"
>  -d "password=password"   -d "grant_type=password"
>  "<domain>/auth/realms/<realm>/protocol/openid-connect/token"
>
> --
>
> On 10/10/16, 3:23 AM, "keycloak-user-bounces at lists.jboss.org on behalf of
> Stian Thorgersen" <keycloak-user-bounces at lists.jboss.org on behalf of
> sthorger at redhat.com> wrote:
>
>     By using token directly I assume you mean exchanging username/password
> for
>     a token directly. I'd strongly recommend against this and it's not
>     something our adapters support directly.
>
>     On 4 October 2016 at 15:36, Mariusz Chruscielewski - Info.nl <
>     mariusz at info.nl> wrote:
>
>     > Hi. We are using Keycloak Tomcat Adapter to secure our webapp, after
> we
>     > access protected resource we are redirected to keycloak and after
> login we
>     > go back to our app. After that, we can get KeycloakPrincipal object
> from
>     > web context (request).
>     >
>     > Is there a way to create / get this object without using Tomcat
> Adapter ?
>     > We want to make API call (like http://keycloak/auth/realms/
>     > vi/protocol/openid-connect/token) and get (or create manually) this
>     > object using AccessTokenResponse (or any other object we can get
> from API).
>     >
>     > Ultimate goal is to login to keycloak like adapter does, but
> directly from
>     > Java, without any interaction from user on keycloak forms.
>     >
>     > Is it even possible?
>     >
>     > Kind Regards,
>     >
>     > Mariusz Chruscielewski
>     >
>     >
>     >
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