WordPress OIDC Login

WordPress OIDC Login Plugin A lightweight WordPress plugin that replaces the standard login form with OpenID Connect (OIDC) authentication via Keycloak. Features - 🔐 OIDC Authentication - Single Sign-On via Keycloak - 👤 Email-based User Matching - Pairs users by email address - 🚀 Lightweight - Minimal code, single responsibility (authentication only) - ⚙️ Environment Variables - Secure configuration via env variables - 🔄 Logout Integration - Automatic logout redirect to Keycloak - 📡 Backchannel Logout - Support for OIDC RP-Initiated Logout - 🛡️ CSRF Protection - State parameter validation - 💾 WordPress Native - Uses standard WordPress authentication Quick Start 1. Install Dependencies 2. Install Plugin 3. Configure Option A: Environment Variables (Recommended) Option B: WordPress Admin - Go to Settings → OIDC Login - Enter Keycloak configuration 4. Setup Keycloak Client In Keycloak admin console: 1. Create OAuth 2.0 Confidential Client 2. Set Valid Redirect URIs: https://example.com/wp-login.php?oidccallback=1 3. Copy Client ID and Client Secret Configuration Environment Variables (Recommended for Production) See CONFIG.md for detailed setup options: - .env file (develo