Add public access mode (public=1) to forward auth

/auth/api/forward?public=1 passes requests through with a Remote-Public
header (anonymous/forbidden/authenticated) instead of 401/403, so routes
can allow anonymous visitors while still identifying logged-in users.
Reauth (max_age) still requires the auth flow. Documented in Headers.md,
api/forward.md, Integration.md and all proxy guides.
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2026-09-05 16:06:32 +00:00
parent 8c2809a879
commit 383c9f472e
14 changed files with 265 additions and 22 deletions
+13
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@@ -15,6 +15,19 @@ See [Forward-Auth Proxy Guides](../proxy/index.md) for Caddy, Nginx, Traefik, Ap
|-----------|-------------|
| perm | Required permissions. See the [perm argument](perm.md). |
| max_age | Require recent passkey use. See the [max_age argument](max-age.md). |
| public | `public=1` allows public access: instead of 401 (no/expired session) or 403 (permission denied), the request passes with a `Remote-Public` header marking the bypass. Reauth (`max_age`) still requires the auth flow. |
## Public access
With `public=1` the endpoint returns 204 in every case except reauth and malformed arguments, and always sets `Remote-Public`:
| Value | Meaning | Identity headers |
|---|---|---|
| `authenticated` | Session valid, all requested permissions met | Full `Remote-*` set |
| `forbidden` | Session valid, but the `perm` check failed | Full `Remote-*` set (including `Remote-Groups` — it is trustworthy, it just lacks the requested permission) |
| `anonymous` | No valid session | None |
The backend must check `Remote-Public` before treating the request as authorized. See [Trusted Headers](../Headers.md) and the "Public access" section in the [proxy guides](../proxy/index.md).
## Request headers