hermes-agent/website/docs
Ben a890389b69 feat(dashboard-auth): HERMES_DASHBOARD_PUBLIC_URL / dashboard.public_url override
Operators behind reverse proxies that don't reliably forward
X-Forwarded-Host / X-Forwarded-Proto / X-Forwarded-Prefix (manual
nginx setups, on-prem ingresses, custom-domain Fly deploys with
incomplete proxy chains) had no way to force the absolute base URL
the OAuth callback redirects from. The dashboard would reconstruct
the redirect_uri from request headers, the IDP would echo it back,
and the user would land on the wrong host or wrong path — 404.

Add `dashboard.public_url` to config.yaml with env override
HERMES_DASHBOARD_PUBLIC_URL. When set, it is the complete authority —
scheme + host + optional path prefix (e.g. https://example.com/hermes) —
and becomes the base for the OAuth `redirect_uri`. X-Forwarded-Prefix
is IGNORED on this code path because the operator has explicitly
declared the public URL; we no longer need to guess from proxy
headers, and stacking the prefix on top would double-prefix the
common case where the prefix is already baked into public_url.

When unset, the existing proxy_headers + X-Forwarded-Prefix
reconstruction runs untouched. Existing Fly.io deploys continue to
work without configuration — this is purely additive.

Precedence mirrors dashboard.oauth.client_id:

  env (non-empty) > config.yaml > reconstructed from request

Implementation:

  - hermes_cli/config.py: add dashboard.public_url to DEFAULT_CONFIG
    with a multi-paragraph doc comment explaining the use case,
    the X-Forwarded-Prefix interaction, and the validation rules.
  - hermes_cli/dashboard_auth/prefix.py: factored out the existing
    _REJECT_CHARS frozenset, added _normalise_public_url() validator
    (requires http/https scheme + non-empty host + no header-injection
    chars), _load_dashboard_section() loader (robust to load_config
    raising, non-dict shapes), and resolve_public_url() entry point
    with the env-overrides-config precedence. A malformed value
    silently falls through to ""; the caller treats "" as "reconstruct
    from request" so a typo never breaks the login flow.
  - hermes_cli/dashboard_auth/routes.py: rewrite _redirect_uri()
    docstring to spell out the three resolution tiers; add the
    public_url short-circuit before the existing X-Forwarded-Prefix
    splicing. Source-level comment notes that X-Forwarded-Prefix is
    intentionally ignored when public_url is set so a future reader
    doesn't try to "fix" the missing prefix layering.
  - cli-config.yaml.example: extend the existing dashboard section
    with a public_url block.
  - website/docs/user-guide/features/web-dashboard.md: new "Public
    URL override" section between the provider configuration and
    the OAuth flow walkthrough. Documents the env-vs-config table,
    the validation rules, and the `http://` `public_url` ↔ Secure
    cookie footgun.

Test coverage — new TestPublicUrlOverride class (8 tests):

  - env var overrides request reconstruction (the primary motivating
    case)
  - config.yaml used when env unset
  - env wins over config (precedence pin)
  - public_url with a path prefix already baked in (the Q1-a case the
    user explicitly chose)
  - public_url suppresses X-Forwarded-Prefix layering (defends
    against the double-prefix bug)
  - trailing slash stripped from public_url (no //auth/callback)
  - malformed public_url falls through to reconstruction (six
    hostile inputs: javascript:, ftp:, missing scheme, missing host,
    quote chars, CRLF injection)
  - empty env string doesn't shadow config.yaml entry (CI / Fly
    provisioned-but-empty secret case)

Mutation-tested: flipping the precedence in resolve_public_url() trips
exactly test_env_overrides_config_public_url; weakening the validator
(accept any scheme) trips exactly test_malformed_public_url_falls_through_to_reconstruction.
Both other tests in each pair stay green, confirming the suite
discriminates the specific regression each test pins.
2026-05-27 02:12:27 -07:00
..
developer-guide remove Vercel AI Gateway and Vercel Sandbox (#33067) 2026-05-27 00:43:32 -07:00
getting-started feat(nix): add #messaging and #full package variants (#33108) 2026-05-27 14:15:39 +05:30
guides docs(mcp-oauth): document paste-back flow and SSH options for remote MCP OAuth (#32067) 2026-05-25 05:35:47 -07:00
integrations remove Vercel AI Gateway and Vercel Sandbox (#33067) 2026-05-27 00:43:32 -07:00
reference remove Vercel AI Gateway and Vercel Sandbox (#33067) 2026-05-27 00:43:32 -07:00
user-guide feat(dashboard-auth): HERMES_DASHBOARD_PUBLIC_URL / dashboard.public_url override 2026-05-27 02:12:27 -07:00
index.mdx fix(website): cross-locale doc links + drop empty ko locale (#31895) 2026-05-24 23:16:20 -07:00
user-stories.mdx docs(website): add User Stories and Use Cases collage page (#18282) 2026-04-30 23:56:59 -07:00