Kolibri OpenID Connect Client plugin

What is this?

Kolibri is a Learning Management System / Learning App designed to run on low-power devices, targeting the needs of learners and teachers in contexts with limited infrastructure. See learningequality.org/kolibri for more info.

OpenID Connect (OIDC) is a simple identity layer on top of the OAuth 2.0 protocol. It allows Clients to verify the identity of the End-User based on the authentication performed by an Authorization Server, as well as to obtain basic profile information about the End-User in an interoperable and REST-like manner.). See openid.net/connect/faq for more info.

This package provides Kolibri users with the ability to authenticate against an OpenID provider. This is usually a need when integrating it with another applications sharing a single-sign-on (SSO) authentication.

How can I install this plugin?

After installing kolibri normally,

1. Install the plugin: pip install kolibri-oidc-client-plugin
2. Activate the plugin for kolibri: kolibri plugin enable kolibri_oidc_client_plugin
3. Configure the information from the OIDC provider as explained below
4. Restart Kolibri

Used claims

This plugin will create a new user in the Kolibri database after it authenticates using the OIDC provider. From the standard OIDC claims the plugin will fetch the following fields and add the information to the Kolibri user database:

• nickname (or username) IMPORTANT: If kolibri >= 0.16 is used, emails can be used as username
• given_name
• family_name
• email
• birthdate
• gender

In case birthdateis provided, the accepted format is [ISO8601‑2004] YYYY-MM-DD. However Kolibri only stores the year of birth.

Apart from these standard claims, the plugin will accept a roles in the user_info token provided as a list. Allowed roles are only admin or coach. If the role is not provided the user is created as a learner.

As an user_info token payload example:

{"email":"[email protected]", "username":"jdoe", "roles":"['coach']", "family_name":"Doe"}

Plugin configuration

This plugin is based on the Mozilla Django OIDC library. The plugin has been set to work with a standard OpenID Connect provider, so most of the library options have already been set and are not optional.

Below are the only available configuration settings.

OIDC provider URL

The OIDC provider URL can be set with one of two methods. If this setting is not configured, the plugin will use the default value http://127.0.0.1:5002/oauth.

Either add it to $KOLIBRI_HOME/options.ini a new section:

[OIDCClient]
PROVIDER_URL=url of the OIDC provider

Or supply the PROVIDER_URL option setting in an environment variable called KOLIBRI_OIDC_CLIENT_URL.

OIDC endpoints

In case some of the endpoints returned by the OIDC discovery url .well-known/openid-configuration are not standard, you can set them using these options either in the $KOLIBRI_HOME/options.ini file or by supplying them in an environment variable.

In the options.ini file:

[OIDCClient]
JWKS_URI=
AUTHORIZATION_ENDPOINT=
TOKEN_ENDPOINT=
USERINFO_ENDPOINT=
ENDSESSION_ENDPOINT=
CLIENT_URL=

Or, as environment variables:

KOLIBRI_OIDC_JWKS_URI
KOLIBRI_OIDC_AUTHORIZATION_ENDPOINT
KOLIBRI_OIDC_TOKEN_ENDPOINT
KOLIBRI_OIDC_USERINFO_ENDPOINT
KOLIBRI_OIDC_ENDSESSION_ENDPOINT
KOLIBRI_OIDC_CLIENT_URL

Ending session in the OIDC provider from kolibri

If kolibri >= 0.14 is used, kolibri will be able to end the user session in the OIDC provider when the use logs out. For it to work correctly, the ENDSESSION_ENDPOINT must contain the OIDC provider url to end the session and another option: CLIENT_URL must be set containing the exact base url of the server running Kolibri, for example: http://localhost:9000 . This feature is available only if kolibri version >= 0.14

Configuration example

This is the options.ini used to login and logout from a KeyCloak server:

[Deployment]
HTTP_PORT = 9000

[OIDCClient]
PROVIDER_URL = http://localhost:8080/auth/realms/master
AUTHORIZATION_ENDPOINT = http://localhost:8080/auth/realms/master/protocol/openid-connect/auth
TOKEN_ENDPOINT = http://localhost:8080/auth/realms/master/protocol/openid-connect/token
USERINFO_ENDPOINT = http://localhost:8080/auth/realms/master/protocol/openid-connect/userinfo
JWKS_URI = http://localhost:8080/auth/realms/master/protocol/openid-connect/certs
ENDSESSION_ENDPOINT = http://localhost:8080/auth/realms/master/protocol/openid-connect/logout
CLIENT_URL = http://localhost:9000

OIDC provider credentials

In order to the client requests to be authorized by the OIDC provider, a client ID and a client password must be used. These values must have been provided by the OIDC server provider.

They can be set using these two environment variables:

• CLIENT_ID
• CLIENT_SECRET

If they are not set, this plugin use the value kolibri.app for both settings.