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swarmctl: log in with the operator's own SSO account and reach the controller through the swarm domain

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`swarmctl --swarm https://<swarm> login` runs the OAuth 2.0
authorization-code flow with PKCE against the swarm's authelia as a new
public `swarmctl` client: a pushed authorization request, the browser login
and explicit consent, and the code delivered by form_post to a loopback
port. The access and refresh tokens are cached at mode 0600 under
$XDG_STATE_HOME/swarmctl/ and refreshed under a file lock, since authelia
rotates the refresh token and revokes the login when a used one is
presented again. With --swarm (or SWARMCTL_SWARM), the agent, schedule and
forge verbs send their requests to https://<swarm>/api/ with the bearer
token instead of over the controller's unix socket, which stays the default.

authelia registers the client on every authelia host with a swarm domain:
`kind = "native"`, public, no minted secret, scopes offline_access and
authelia.bearer.authz, audience https://<swarm>/api/ (matched as a URL
prefix), redirect http://127.0.0.1/callback (any loopback port). Every
field is one authelia 4.39.20's validator requires for a public client
holding the bearer scope.

The swarm apex's /api/ answers a refused caller that sent an
Authorization header with the 401 itself instead of the login redirect,
so the CLI can tell "log in again" apart from an answer; a browser still
gets the redirect. The bearer token is not forwarded to the controller.

Refs #4409 (mara: c94764, c94782).
This commit is contained in:
atlas 2026-10-11 23:43:29 +02:00 • committed by mara
commit 2df19e4899
17 changed files with 1118 additions and 122 deletions
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9
swarmctl/src/forge.rs
View file

@ -6,12 +6,11 @@
//! socket; the shape below mirrors the controller's own private
//! `MakeForgeAdminResponse` for the reason that module's doc comment gives.
use std::path::Path;
use anyhow::{Context as _, Result};
use serde::Deserialize;
use crate::agent::{parse_ident, post};
use crate::remote::Target;
/// Success body of `POST /api/forge/users/{name}/admin`.
#[derive(Deserialize)]
@ -29,15 +28,15 @@ enum AdminChange {
/// Run `swarmctl forge make-admin`.
///
/// Synchronous for the same reason `agent create` is.
pub(crate) fn make_admin(socket: &Path, name: &str) -> Result<()> {
pub(crate) fn make_admin(target: &Target, name: &str) -> Result<()> {
let name = parse_ident(name, "user name")?;
let rt = tokio::runtime::Builder::new_current_thread()
.enable_io()
.enable_all()
.build()
.context("starting a tokio runtime for the controller request")?;
let resp: MakeForgeAdminResponse = rt.block_on(post(
socket,
target,
&format!("/api/forge/users/{name}/admin"),
&serde_json::json!({}),
"forge-make-admin",