Hi Dmitry,
thanks a lot for this elaborate clarification. :) It is clear to us what roads we can
follow now.
First, I asked this question before on stackoverflow.
https://stackoverflow.com/questions/53192776/how-to-change-authentication....
Is it ok if I add your reply as an answer there (I will only put there relevant parts)? I
believe there will be other people asking the same question...
Secondly, considering your recommended way (we love bulletproof solutions ;-)), a Keycloak
server, I see I have two options: the full server or the Wildfly add-on. We use EAP 7.1.
Can we use the add-on on our server? I also noticed that on the download page you do not
recommend this for production use. So I was taking into consideration to install the full
Keycloak server. But can we use this server then also to deploy our application? It seems
to me that it should be possible since the Keycloak server has a fully featured standalone
folder... Of course, we want to avoid to run two EAP instances, if possible ;)
Regarding the Intuit question, I am not sure. It is another department who is responsible
for this, I am just in the development team. But it could be they use Intuit behind the
scenes. We only receive stuff like authentication url, clientId and secret and so on and
we have to make it work :-) The well-known configuration we received from them, does look
a lot like yours.
Thirdly, I will make a JIRA issue for this. Or should I wait first a reply from the
Keycloak developers? To be honest, it's the first time I use a mailing list... No idea
who can reply on this email.
KR,
Fabrizio Usai
________________________________________
Van: Dmitry Telegin <dt(a)acutus.pro>
Verzonden: vrijdag 9 november 2018 04:45
Aan: Usai, Fabrizio; keycloak-user(a)lists.jboss.org
Onderwerp: Re: [keycloak-user] OpenID Java Adapter: configuring keycloak to use an IDP
different then Keycloak Server
Hello Fabrizio,
Indeed, string templates like
"/realms/{realm-name}/protocol/openid-connect/auth" are hardcoded into Keycloak
adapters [1] [2].
Luckily, there seems to be a workaround. In Keycloak, there is a mechanism for
multitenancy [3]; it requires you to supply a resolver that would return a
KeycloakDeployment instance based on request parameters.
One of its bonus features is that you can completely redefine the behavior of
KeycloakDeployment. For example, you can extend org.keycloak.adapters.KeycloakDeployment
and override its resolveUrls() method, to make the URLs point to your 3rd party IDP.
This approach doesn't require any modifications to the adapter code, so I'd
recommend you start with it. However, I wouldn't rule out further incompatibilities
that could pop up.
Another option is installing an intermediary Keycloak (server), configuring brokering to
3rd party IDP and pointing your adapter to Keycloak. Though sounds like an overkill,
it's a bulletproof solution that should work 100% (and it also has some other
benefits).
There are of course other options like using 3rd party IDP's equivalent for Keycloak
adapter (is it Intuit BTW?), or using other OpenID Connect Java libraries [4], or even
proxy-level adapters like apache-mod_auth_openidc [5] or Keycloak Gatekeeper [6]. But I
understand that this would probably require code rewrite, so you should consider these
options only as the last resort.
As for SAML and why it used to work: Keycloak adapter uses standard SAML SP metadata for
configuration, which defines URLs strictly and unambiguously; here we need to admit that
SAML is more mature and feature-complete.
OIDC, on the contrary, allows for some freedom. At the moment, Keycloak OIDC adapter
doesn't use any standard metadata, but rather generates URLs using hardcoded
templates. I think Keycloak adapter could use OIDC's rough equivalent for SAML
metadata, namely "well-known" URLs.
You can experiment with your IDP and append ".well-known/openid-configuration"
to its URL. If my conjecture about Intuit is correct, then it should look like this:
https://oauth.platform.intuit.com/op/v1/.well-known/openid-configuration
In theory, Keycloak OIDC adapter could ingest this metadata instead of hardcoding URL
templates. To me, this could be a valuable addition, but surprisingly I don't see any
related JIRA issue. Maybe Keycloak developers could give us some feedback.
Cheers,
Dmitry Telegin
CTO, Acutus s.r.o.
Keycloak Consulting and Training
Pod lipami street 339/52, 130 00 Prague 3, Czech Republic
+42 (022) 888-30-71
E-mail: info(a)acutus.pro
[1]
https://github.com/keycloak/keycloak/blob/master/core/src/main/java/org/k...
[2]
https://github.com/keycloak/keycloak/blob/master/adapters/oidc/adapter-co...
[3]
https://www.keycloak.org/docs/latest/securing_apps/index.html#_multi_tenancy
[4]
https://openid.net/developers/certified/
[5]
https://github.com/zmartzone/mod_auth_openidc
[6]
https://github.com/keycloak/keycloak-gatekeeper
On Thu, 2018-11-08 at 14:13 +0000, Usai, Fabrizio wrote:
Dear,
> We are using Keycloak Java adapter 4.5.0 in combination with EAP7.1. When we
configure our keycloak.json we have for auth-server-url the url
https://authentication.country.com/op/v1/auth (the original url is changed for privacy
reasons). So far so good.
When we navigate to our application, we are forwarded to
https://authentication.country.com/op/v1/auth/realms/KeycloakOIDCRealm/pr....
This is not good, since we use our own identity provider. Removing the
realms/KeycloakOIDCRealm/protocol/openid-connect/ part of the url, forwards it correctly
to the identity provider. So the Keycloak adapter adds it by default, assuming we will
always use Keycloak as an identity provider. Before we were using SAML and didn't had
this issue.
How can we configure the keycloak.json for the adapter to leave out the addition of
realms/KeycloakOIDCRealm/protocol/openid-connect/?
We don't understand why with SAML we didn't had this issue at all, and now with
OpenID it seems very difficult to solve this issue. Our current guess to solve this, is to
overwrite some Keycloak Java class and make sure the url is built the correct way.
Although it is a bit dirty, we could accept this as solution (if it is possible), but we
prefer to do this via configuration.
Kind regards,
Fabrizio Usai
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