README

Basic CAS (SSO) authenticator for Symfony 5.4, 6.0, 7.0 and 8.0 (no use guard component && no old authentication)

This bundle provides a -very- basic CAS (https://github.com/apereo/cas/tree/4.1.x) authentication client for Symfony 5.4, 6.0, 7.0 and 8.0 with new security authentication system

Installation

Install the library via Composer by running the following command:

composer require yraiso/casauth-bundle

Next, enable the bundle in your config/bundles.php file:

<?php

return [
//.....
        YRaiso\CasAuthBundle\YRaisoCasAuthBundle::class => ['all' => true],
];

Create this file config/packages/y_raiso_cas_auth.yaml, add these settings :

y_raiso_cas_auth:
    server_login_url: https://mycasserver/cas/
    server_validation_url: https://mycasserver/cas/serviceValidate
    server_logout_url: https://mycasserver/cas/logout
    server_force_redirect_https: false # only for app with vhost set to 80 and behind reverse proxy (443) - if in env file must be cast to boolean value like('%env(bool:CAS_FORCE_REDIRECT_HTTPS)%')!          
    xml_namespace: cas
    options: [] # you can add request options (or override global ones) (cf https://symfony.com/doc/current/http_client.html#making-requests)

Note :

• the xml_namespace and options parameters are optionals
• to set proxy => options: -proxy: '%env(CAS_PROXY_URL)%'

Modify your security.yml with the following values (the provider in the following settings should not be used as it's just a very basic example ) :

security:
    enable_authenticator_manager: true  
    providers:
        cas_user_provider:
          id: yraiso.cas_user_provider

    firewalls:
        dev:
            pattern: ^/(_(profiler|wdt)|css|images|js)/
            security: false
        main:
            logout: ~
            remote_user:
              provider: cas_user_provider
            custom_authenticator: yraiso.cas_authenticator
            entry_point: yraiso.cas_auth_entry_point

    access_control:
        - { path: ^/, roles: ROLE_USER }

In production, create your own UserProvider ( implements UserProviderInterface, PasswordUpgraderInterface) and User (implements UserInterface, this class it is not mandatory) then add its service name in providers:cas_user_provider:id: (security.yml file) :

services.yaml:

# ...
services:
    cas_user_provider:
        class: App\Security\User\CasUserProvider

And voila ! Your secured route should redirect you to your CAS login page which should authenticate you.

Note : if you create your own User you must declare the following attributes and their accessors :

// ....
    private $uid;

    private $roles = [];

    private $casAttributes;
    

CAS global logout option

If you want your users to logout from the remote CAS server when logging out from your app, you should apply the following settings :

security.yaml:

# ...
    firewalls:
        # ...
        main:
          # ...
          logout:
            path: app_logout

services.yaml

# ...
services:
    # ... 
    YRaiso\CasAuthBundle\EventListener\LogoutListener:
        arguments:
            $logoutUrl: "%cas_server_logout_url%"
        tags:
            - name: 'kernel.event_listener'
              event: 'Symfony\Component\Security\Http\Event\LogoutEvent'
              dispatcher: security.event_dispatcher.main

Next, you need to create a route for this URL (but not a controller):

    /**
     * @Route("/logout", name="app_logout", methods={"GET"})
     *
     */
    public function logout(): void
    {
        // controller can be blank: it will never be called!
        throw new \Exception('Don\'t forget to activate logout in security.yaml');
    }