[keycloak-dev] Keycloak integration with mod_auth_openidc broken

[Stian Thorgersen]

It should support multi-valued and mapping to a array rather than a
comma-separated list.

On 1 February 2017 at 21:06, Stefan Schlesinger <sts at ono.at> wrote:

> Hello,
>
> it looks like its currently not possible to use mod_auth_openidc with
> Keycloak for authorization of legacy applications. The current workaround
> described by mod_auth_openidc is to use OpenID Connect for authentication
> and use the apache ldap module for authorization, which is a rather ugly
> workaround IMHO.
>
> The problem currently is twofold:
>
>  1) One can use mod_auth_openidc to verify claims, but it doesn’t come
> with JSON path support[1], so matching the claims in realm_access.roles
> isn’t possible, only arrays in a flat JSON tree are supported[2].
>
>  2) This wouldn’t cause any issues, as Keycloak comes with a User Realm
> Role mapper, which is able to map roles to a different key (in my example
> below the key is ‘roles’).
>
> {
>   "jti": "01667279-a161-47ae-a093-b08643a1b7b5",
>   "exp": 1485977685,
>    …
>   "realm_access": {
>     "roles": [
>       “application_x",
>       “application_y",
>       "uma_authorization",
>     ]
>   },
>   "roles": “[application_x, application_y, uma_authorization]",
> }
>
> The problem with the mapper is that the value of roles, is served as a
> string instead of an array and mod_auth_openidc cannot handle this
> properly[3].
>
> Btw. the same thing goes for the User Client Role mapper! Which looks like
> this:
>
> {
>   "client_role": "[login]”
> }
>
> An issue for this has already been created: https://issues.jboss.org/
> browse/KEYCLOAK-4205
>
> It would be so great to get this fixed in the next release!!
>
> Best,
>
> Stefan.
>
>
> [1] https://groups.google.com/forum/#!topic/mod_auth_openidc/QOMMYeXt5Jc
> [2] https://github.com/pingidentity/mod_auth_openidc/
> blob/master/src/authz.c#L85
> [3] https://github.com/pingidentity/mod_auth_openidc/
> blob/master/src/authz.c#L67
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