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About the Example Application
This is a simple application based on HTML5+AngularJS+JAX-RS that will introduce you to some of the main concepts around Keycloak Authorization Services.
Basically, it is a project containing three modules:
- photoz-restful-api, a simple RESTFul API based on JAX-RS and acting as a resource server.
- photoz-html5-client, a HTML5+AngularJS client that will consume the RESTful API published by a resource resourcer.
- photoz-authz-policy, a simple project with some rule-based policies using JBoss Drools.
For this application, users can be regular users or administrators. Regular users can create/view/delete their albums and administrators can do anything.
In Keycloak, albums are resources that must be protected based on a set of policies that defines who and how can access them.
The resources are also associated with a set of scopes that defines a specific access context. In this case, albums have three main scopes:
- urn:photoz.com:scopes:album:create
- urn:photoz.com:scopes:album:view
- urn:photoz.com:scopes:album:delete
The authorization requirements for this example application are based on the following assumptions:
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By default, any regular user can perform any operation on his resources.
- For instance, Alice can create, view and delete her albums.
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Only the owner and administrators can delete albums. Here we are considering policies based on the urn:photoz.com:scopes:album:delete scope
- For instance, only Alice can delete her album.
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Only administrators can access the Administration API (which basically provides ways to query albums for all users)
-
Administrators are only authorized to access resources if the client's ip address is well known
That said, this application will show you how to use the Keycloak to define policies using:
- Role-based Access Control
- Attribute-based Access Control
- Rule-based policies using JBoss Drools
- Rule-based policies using JavaScript
Beside that, this example demonstrates how to create resources dynamically and how to protected them using the Protection API and the Authorization Client API. Here you'll see how to create a resource whose owner is the authenticated user.
It also provides some background on how you can actually protect your JAX-RS endpoints using a policy enforcer.
Create the Example Realm and a Resource Server
Considering that your Keycloak Server is up and running, log in to the Keycloak Administration Console.
Now, create a new realm based on the following configuration file:
examples/authz/photoz/photoz-realm.json
That will import a pre-configured realm with everything you need to run this example. For more details about how to import a realm into Keycloak, check the Keycloak's reference documentation.
After importing that file, you'll have a new realm called photoz.
Back to the command-line, build the example application. This step is necessary given that we're using policies based on
JBoss Drools, which require photoz-authz-policy artifact installed into your local maven repository.
cd examples/authz/photoz
mvn clean install
Now, let's import another configuration using the Administration Console in order to configure the client application photoz-restful-api as a resource server with all resources, scopes, permissions and policies.
Click on Clients on the left side menu. Click on the photoz-restful-api on the client listing page. This will
open the Client Details page. Once there, click on the Authorization tab.
Click on the Select file button, which means you want to import a resource server configuration. Now select the file that is located at:
examples/authz/photoz/photoz-restful-api/photoz-restful-api-authz-config.json
Now click Upload and the resource server will be updated accordingly.
Deploy and Run the Example Applications
To deploy the example applications, follow these steps:
cd examples/authz/photoz/photoz-html5-client
mvn clean package wildfly:deploy
And then:
cd examples/authz/photoz/photoz-restful-api
mvn clean package wildfly:deploy
Now, try to access the client application using the following URL:
http://localhost:8080/photoz-html5-client
If everything is correct, you will be redirect to Keycloak login page. You can login to the application with the following credentials:
- username: jdoe / password: jdoe
- username: alice / password: alice
- username: admin / password: admin