Developer Guide

This chapter is for developers who want to understand, debug, or extend the extension.

Architecture overview

The extension is layered as follows:

Classes/
  Authentication/     PSR-7-based auth service (TYPO3 auth chain)
  Configuration/      Configuration value objects
  Controller/         eID dispatcher + Extbase-less controllers
  Domain/
    Dto/              Request/response DTOs
    Enum/             EnforcementLevel enum (re-exported)
    Model/            FrontendCredential, RecoveryCode
  Event/              PSR-14 event classes (8 events)
  EventListener/      PSR-14 listeners (felogin integration, banner)
  Form/Element/       PasskeyFeInfoElement (TCA read-only display)
  Middleware/         PasskeyPublicRouteResolver + Interstitial
  Service/            Business logic (6 services)

All services are wired via Symfony DI (Configuration/Services.yaml). The auth service and eID dispatcher use GeneralUtility::makeInstance for compatibility with the TYPO3 auth chain.