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computer-playbook/roles/sys-front-inj-logout
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Kevin Veen-Birkenbach 231fd567b3 feat(frontend): rename inj roles to sys-front-*, add sys-svc-cdn, cache-busting lookup 
Introduce sys-svc-cdn (cdn_paths/cdn_urls/cdn_dirs) and ensure CDN directories + latest symlink.

Rename sys-srv-web-inj-* → sys-front-inj-*; update includes/templates; serve shared/per-app CSS & JS via CDN.

Add lookup_plugins/local_mtime_qs.py for mtime-based cache busting; split CSS into default.css/bootstrap.css + optional per-app style.css.

CSP: use style-src-elem; drop unsafe-inline for styles. Services: fix SYS_SERVICE_ALL_ENABLED bool and controlled flush.

BREAKING CHANGE: role names changed; replace includes and references accordingly.

Conversation: https://chatgpt.com/share/68b55494-9ec4-800f-b559-44707029141d
2025-09-01 10:10:23 +02:00
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meta
feat(frontend): rename inj roles to sys-front-*, add sys-svc-cdn, cache-busting lookup
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tasks
feat(frontend): rename inj roles to sys-front-*, add sys-svc-cdn, cache-busting lookup
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templates
feat(frontend): rename inj roles to sys-front-*, add sys-svc-cdn, cache-busting lookup
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vars
feat(frontend): rename inj roles to sys-front-*, add sys-svc-cdn, cache-busting lookup
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README.md
feat(frontend): rename inj roles to sys-front-*, add sys-svc-cdn, cache-busting lookup
2025-09-01 10:10:23 +02:00

README.md

sys-front-inj-logout

This role injects a catcher that intercepts all logout elements in HTML pages served by Nginx and redirects them to a centralized logout endpoint via JavaScript.

Description

The sys-front-inj-logout Ansible role automatically embeds a lightweight JavaScript snippet into your web application's HTML responses. This script identifies logout links, buttons, forms, and other elements, overrides their target URLs, and ensures users are redirected to a central OIDC logout endpoint, providing a consistent single sign‑out experience.

Overview

  • Detection: Scans the DOM for anchors (<a>), buttons, inputs, forms, use elements and any attributes indicating logout functionality.
  • Override: Rewrites logout URLs to point at your OIDC provider’s logout endpoint, including a redirect back to the application.
  • Dynamic content support: Uses a MutationObserver to handle AJAX‑loaded or dynamically injected logout elements.
  • CSP integration: Automatically appends the required script hash into your CSP policy via the role’s CSP helper.

Features

  • Seamless injection via Nginx sub_filter on </head>.
  • Automatic detection of various logout mechanisms (links, buttons, forms).
  • Centralized logout redirection for a unified user experience.
  • No changes required in application code.
  • Compatible with SPAs and dynamically generated content.
  • CSP‑friendly: manages script hash for you.

Further Resources