Fediz Extensions

This page describes the extension points in Fediz to enrich its functionality further.

Callback Handler

The Sign-In request (Redirect URL) to the IDP contains several query parameters to customize the sign in process. Some parameters are configured statically in the Fediz configuration file some others can be resolved at runtime when the initial request is received by the Fediz plugin.

The following table gives an overview of the parameters which can be resolved at runtime. It contains the XML element name of the Fediz configuration file, the query parameter name of the sign-in request to the IDP as well as the Callback class.

XML element

Query parameter

Callback class

Supported version

authenticationType

wauth

WAuthCallback

1.0.0

homeRealm

whr

HomeRealmCallback

1.0.0

issuer

N.A.

IDPCallback

1.0.0

freshness

wfresh

FreshnessCallback

1.0.2

realm

wtrealm

RealmCallback

1.1.0

N.A.

any

SignInQueryCallback

1.1.0

If you configure a class which implements the interface javax.security.auth.callback.CallbackHandler you get the corresponding Callback object where you must set the value which is then added to the query parameter. The Callback object provides the HttpServletRequest object which might give you the required information to resolve the value.

Here is a snippet of the configuration to configure a CallbackHandler:

And a sample implementation of the CallbackHandler:

Custom Token Validator

todo