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#1115 raised HSTS to one year but set no X-Content-Type-Options, Referrer-Policy, Permissions-Policy or HSTS includeSubDomains/preload, because none of them is safe globally: nosniff lets ORB block no-cors responses typed text/html, includeSubDomains on the apex covers hosts the platform does not serve, and a server-level add_header is dropped in every location that sets its own. WEBSERVER_SECURITY_HEADERS (group_vars/all/04_webserver.yml) now holds the platform values, all opt-in: nosniff false, no Referrer-Policy, no Permissions-Policy, HSTS max-age one year without includeSubDomains or preload. A role overrides any key under security_headers in its meta/server.yml, an inventory under applications.<role>.server.security_headers. The new security_headers filter merges both, rejects unknown keys, wrong types, unknown Referrer-Policy tokens, non-printable header values and preload without includeSubDomains or below a one-year max-age, and composes the HSTS value. - nosniff, Referrer-Policy and Permissions-Policy are set in the Lua header filter of content_security_policy.conf.j2, next to CSP, so a location's own add_header cannot drop them. Referrer-Policy is only set when the upstream sends none; Permissions-Policy only on HTML documents. - HSTS stays the single server-level add_header in nginx_ssl_header.j2, now with the per-app value. A second emitter in Lua would duplicate the header. It stays inside the TLS branch, which onion vhosts never enter, so an onion vhost gets no HSTS even when its app opts in. No role opts in yet, so rendered vhosts are unchanged. Closes #1123 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Shared Utilities (utils/)
This directory contains shared Python helpers used by custom modules and plugins.
Purpose
Use utils/ for reusable code that should not be duplicated across:
library/modules,plugins/action/,plugins/filter/,plugins/lookup/.
Typical shared utilities:
- API clients,
- validation/conversion helpers,
- path and configuration helpers,
- cross-plugin/module domain logic.
- Shared HTTP(S) connection handler for multiple modules.
- Common validation or transformation functions for user input.
- Utility functions for interacting with Docker, LDAP, etc.
- Grouped helper packages such as
utils/domains/for related domain logic.
Design Guidelines
- Keep helpers focused and composable.
- Avoid side effects during import.
- Prefer explicit function/class APIs over implicit globals.
- Keep dependencies minimal so modules/plugins stay lightweight.
Example Import
from utils.domains.primary_domain import get_primary_domain
What Does Not Belong Here
- Standalone executable modules (put in
library/). - Ansible plugin entrypoints (put in
plugins/*).
References
- Module utilities: https://docs.ansible.com/ansible/latest/dev_guide/developing_module_utilities.html
- Plugin development: https://docs.ansible.com/ansible/latest/dev_guide/developing_plugins.html