The undertow-pac4j project is an easy and powerful security library for Undertow web applications which supports authentication and authorization, but also application logout and advanced features like CSRF protection.
It's based on Java 11, Undertow 2 and on the pac4j security engine v5. It's available under the Apache 2 license.
- A client represents an authentication mechanism. It performs the login process and returns a user profile. An indirect client is for web application authentication while a direct client is for web services authentication:
▸ OAuth - SAML - CAS - OpenID Connect - HTTP - Google App Engine - LDAP - SQL - JWT - MongoDB - CouchDB - Kerberos - IP address - Kerberos (SPNEGO) - REST API
- An authorizer is meant to check authorizations on the authenticated user profile(s) or on the current web context:
▸ Roles / permissions - Anonymous / remember-me / (fully) authenticated - Profile type, attribute - CORS - CSRF - Security headers - IP address, HTTP method
-
A matcher defines whether the
SecurityFiltermust be applied and can be used for additional web processing -
The
SecurityHandlerprotects an url by checking that the user is authenticated and that the authorizations are valid, according to the clients and authorizers configuration. If the user is not authenticated, it performs authentication for direct clients or starts the login process for indirect clients -
The
CallbackHandlerfinishes the login process for an indirect client -
The
LogoutHandlerlogs out the user from the application and triggers the logout at the identity provider level.
Usage
1) Add the required dependencies
2) Define:
- the security configuration
- the callback configuration, only for web applications
- the logout configuration
3) Apply security
4) Get the authenticated user profiles
Demo
The demo webapp: undertow-pac4j-demo is available for tests and implement many authentication mechanisms: Facebook, Twitter, form, basic auth, CAS, SAML, OpenID Connect, JWT...
Versions
The latest released version is the 
See the release notes. Learn more by browsing the pac4j documentation and the undertow-pac4j Javadoc.
See the migration guide as well.
Need help?
You can use the mailing lists or the commercial support.