| | |
| | | # keycloak-protocol-cas |
| | | # keycloak-protocol-cas |
| | | |
| | | This plugin for Keycloak Identity and Access Management (http://www.keycloak.org) adds the CAS 3.0 SSO protocol |
| | | as an available client protocol to the Keycloak system. It implements the required Service Provider Interfaces (SPIs) |
| | | for a Login Protocol and will be picked up and made available by Keycloak automatically once installed. |
| | | |
| | | ![Build status](https://github.com/jacekkow/keycloak-protocol-cas/workflows/Release/badge.svg) |
| | | |
| | | ## Features |
| | | |
| | | The following CAS features are currently implemented: |
| | | * CAS 1.0/2.0/3.0 compliant Login/Logout and Service Ticket Validation |
| | | * Single Logout (SLO) |
| | | * Filtering of provided `service` against configured redirect URIs |
| | | * JSON and XML response types |
| | | * Mapping of custom user attributes to CAS assertion attributes |
| | | |
| | | The following features are **missing**: |
| | | * SAML request/response [CAS 3.0 - optional] |
| | | * Proxy ticket service and proxy ticket validation [CAS 2.0] |
| | | |
| | | The following features are out of scope: |
| | | * Long-Term Tickets - Remember-Me [CAS 3.0 - optional] |
| | | |
| | | ## Compatibility |
| | | |
| | | The CAS plugin has been tested against the same Keycloak version as the plugin version. |
| | | |
| | | As a rule of thumb plugin version should **match your Keycloak version**. |
| | | |
| | | ## Installation |
| | | |
| | | Quarkus is the default distribution method of Keycloak 17.0.0 and newer. For legacy installations using WildFly, please refer to the [old README](https://github.com/jacekkow/keycloak-protocol-cas/blob/16.1.1/README.md). |
| | | |
| | | 1. Download the latest release compatible with your Keycloak version from the [releases page](https://github.com/jacekkow/keycloak-protocol-cas/releases). |
| | | 2. Put the downloaded JAR file into the `providers/` directory inside Keycloak installation folder. |
| | | 3. Stop the Keycloak server. |
| | | 4. (Re-)build the installation using `kc.sh build` command. |
| | | 5. Start the Keycloak: `kc.sh start` |
| | | |
| | | Remember to update plugin artifact with each Keycloak server upgrade! |
| | | |
| | | ## Configuration |
| | | |
| | | To use the new protocol, you have to create a client within Keycloak as usual, selecting `cas` as protocol. |
| | | As there is no client ID indication in protocol, the client will be identified by the redirect URIs |
| | | configured in Keycloak. |
| | | |
| | | Enter `https://your.keycloak.host/realms/master/protocol/cas` as the CAS URL into your SP. |
| | | This assumes that you use the default `master` realm - if not, modify the URL accordingly. |
| | | |
| | | Note that some client implementations require you to enter login and validate URLs, not CAS URL! |
| | | This manifests with "Page Not Found" error on login attempt |
| | | (see [issue #27](https://github.com/jacekkow/keycloak-protocol-cas/issues/27) for example). |
| | | In such case append `/login` to the CAS URL to get the "login URL". |
| | | Similarly append `/serviceValidate` to get the "validate URL". |
| | | |
| | | ## Disclaimer |
| | | |
| | | This plugin was implemented from scratch to comply to the official CAS protocol specification, |
| | | and is based heavily on the OpenID Connect implementation in Keycloak. |
| | | It is licensed under the Apache License 2.0. |
| | | |
| | | This repo is a fork of https://github.com/Doccrazy/keycloak-protocol-cas |
| | | and includes changes for Keycloak 8 and newer that were not merged by the owner for half a year. |
| | | |
| | | ## References |
| | | |
| | | [1] https://www.keycloak.org/ |
| | | [2] https://issues.jboss.org/browse/KEYCLOAK-1047 (Support CAS 2.0 SSO protocol) |
| | | [3] https://apereo.github.io/cas/4.2.x/protocol/CAS-Protocol-Specification.html |
| | | [4] https://keycloak.gitbooks.io/server-developer-guide/content/topics/providers.html |