On Wed, May 15, 2019 at 8:52 AM Lasse Jahn <lasse.jahn(a)student.hpi.de>
wrote:
Hi Pedro,
thanks for the quick reply. So I got it working now, that the resource I
created is enforcing the one policy. For a single resource this is great.
Later on I would like to have an multi tenant solution, short explanation
what I mean:
Different companies have the same functionality but maybe want to change
the restriction for there self. But still with only one backend application
running. So each company should get one realm with the backend application
registered as a client. When they call the api the backend should enforce
the policies of the company specific client.
Therefore I have 2 questions:
1. Is it possible to configure the enforcer to enforce all policies for
all resources only depending on the requested on the path. So I only to
have to add the middleware once before the express router. So for example
we have a route /api/devices and /api/users (GET,POST,DELETE each). Both
are represented by a resource in the keycloak admin console.
I would like to have something like this:
router.js
****
const express = require('express');
const router = express.Router();
const users = require('../controllers/users.controller');
const devices = require('../controllers/devices.controller');
router.post('/users/', users.create);
router.delete('/users/', users.deleteAll);
router.get('/users/', users.findAll);
router.post('/devices/', devies.create);
router.delete('/devices/', devicese.deleteAll);
router.get('/devices/', devices.findAll);
module.exports = router;
****
app.js
****
.... //all from before
app.use('/api', keycloak.enforcer(__SOME_CONFIG__), routes);
****
I dont want to write keycloak.enforcer(...) to each line of users or
devices...
Maybe this can done by the claims and the context information? But if yes
I don't get how.
Yes, by using claims you are allowed to use them in your policies. Here is
an example:
https://github.com/keycloak/keycloak-quickstarts/blob/latest/app-authz-re....
More details here
https://www.keycloak.org/docs/latest/authorization_services/index.html#ex...
.
Your keycloak.enforce would be similar to
https://github.com/keycloak/keycloak-nodejs-connect/blob/master/test/fixt...
.
2. For now the solution is only single tenant, but If I want to have it
multi tenant and have realm per company with similar clients (only
different in policies and permissions). Do you have an idea how I can solve
the problem that the keycloak object is configured realm specific?
I would probably build a middleware which checks for a custom HTTP header
or looks for a subdomain for referencing the company. Depending on the
company I would set the keycloak object.
Do you think this can work ? Or do you have a better idea?
AFAIK, this is how you do it. So that accordingly with the request you
build a new Keycloak object using a specific realm.
Some suggestions for your documentation:
- Could you somewhere describe what the middleware option protected is
doing? The Logout, ... options are explained, but the protected I couldn't
find.
- Your default resource is called 'Default Resource' but in the example
the resource is renamed to 'resource' the rest is untouched and default
config. Maybe a comment or adjustment of the example might be helpful.
Thanks for the feedback. Feel free to create a JIRA so that we can track
and plan the improvements you are proposing.
Regards,
Lasse
On 14.05.19 20:33, Pedro Igor Silva wrote:
Hi,
We've added more docs to NodeJS PEP recently [1]. They should be available
in the next release. Please, let me know if that is enough or if we need to
add more information.
In your case, this code:
app.use('/api', keycloak.enforcer({WHAT_COMES_HERE}), routes);
Would be:
app.use('/api', keycloak.enforcer('{resource_name}:{resource_scope}'),
routes);
If you have a resource in Keycloak called "foo" and a scope associated
with this resource called "bar", the code would be:
app.use('/api', keycloak.enforcer('foo:bar'), routes);
Hope it helps.
[1]
https://github.com/keycloak/keycloak-documentation/pull/654
On Tue, May 14, 2019 at 1:25 PM Jahn, Lasse wrote:
> Hello,
>
> It's the first time writing to keycloak mailing list (I hope this is the
> correct one?) so excuse if I forget to provide some information or any
> other mistakes ..
> Sorry for the text wall.
>
> Shortly what I try to do (maybe I got something completely wrong):
> I create a backend (node.js Bearer Only) which shall offer an REST api.
> Partially it is used via a frontend (keycloak-clients) or directly by some
> devices.
> In general I try to create an application with a lot of CRUD. User
> Management is done in keycloak and only I forward these requests to the
> admin REST Api. Other stuff like the devices ... I store in a separate
> database.
> So the backend is the abstraction layer for frontend and other use-cases.
>
> So far so good, but for the beginning it was enough to check weather the
> request comes from an authenticated person or not, so all handled via
> keycloak.protect() The Token from the authenticated person was passed
> But now I'd want to offer different authorization level (can differ due
> to reasons of multitenancy, why I want to solve this via policies and co in
> admin-console inside the client configuariton) because the normal user
> shall have access to only some routes and the management shall have full
> access to the api, but of course don't need the keycloak admin access.
> So I enabled the service account for my backend client and gave this one
> the realm-admin role so the client has access to everything and I can
> handle the authorization inside the backend client it self (using policies,
> permissions, .. inside the admin-console).
> (Just in case no one gets what I'm talking about. Fixing [1] should help
> me fixing my issue I guess)
>
> Setup
> - node.js application using express
> - registered as single client in keycloak admin-console (confidential,
> but config inside the code is bearer-only)
> - Keycloak is running in a docker-container (version 4.5)
> - all services are running in a docker-compose network and are behind a
> reverse proxy for common uri
> - enabled Authorization in client and changed the default policy to
> Negative to always deny => to see if it is enforced)
>
> My Problem
> I don't understand how to use the policies, permissions and Co I created
> in the admin-console inside the backend it self. How do I enforce that
> these are used?
> I tried to check different examples and documentation, but could get it
> working.
> The last thing I found was that the entitlement api was removed, but a
> policy-enforcer was added to the nodejs adapter. In the documentation for
> the policy-enforcer [2] I couldn't find a documentation of the middleware
> (keycloak.enforcer({}) [3][4]).
>
> My Code
>
> *****
> app.js
>
> const express = require('express');
> const app = express();
> const Keycloak = require('keycloak-connect');
> const session = require('express-session');
> const routes = require('./routes/index');
>
>
> const kcConfig = {
> 'realm': 'master',
> 'bearer-only': true,
> 'auth-server-url': `https://DOMAIN/auth<https://domain/auth>`,
> 'ssl-required': 'all',
> 'resource': 'fm-backend',
> 'credentials': {
> secret: 'SOME_SECRET',
> },
> 'confidential-port': 0,
> 'policy-enforcer': { //tried with an
> without this, changed nothing
> 'enforcement-mode': 'ENFORCING',
> },
> };
>
> const memoryStore = new session.MemoryStore();
> const keycloak = new Keycloak({ memoryStore }, kcConfig);
>
> app.use(keycloak.middleware({ logout: '/api/logout', protected:
> '/api/gates' }));
>
> // used before, worked for well for authentication
> app.use('/api', keycloak.protect(), routes);
>
> // now unfortunately I don't understand how to use keycloak.enforcer()
> middleware
> app.use('/api', keycloak.enforcer({WHAT_COMES_HERE}), routes);
>
> module.exports = app;
>
> *****
>
> [1]
>
https://stackoverflow.com/questions/53722033/how-to-enable-policy-enforci...
> [2]
>
https://keycloak-docs.github.io/deploy-docs/dev/master/authorization_serv...
> [3]
>
https://github.com/keycloak/keycloak-documentation/blob/master/securing_a...
> [4]
>
https://github.com/keycloak/keycloak-nodejs-connect/blob/master/example/i...
>
>
> Any Help is appreciated :)
>
>
> With kind regards
> Lasse
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