Files
computer-playbook/tests/unit/python
kevinveenbirkenbachandClaude Opus 5 8d1d45d246 fix(discourse): pin the OIDC issuer for the launcher-built container
Nextcloud#7 of run 33445831564 fails on three discourse specs, all on one
assertion, all for one reason. The received body is Discourse's own page:
"Sorry, there was an error while trying to authorize your account with oidc."

The browser leg works. What dies is Discourse's server-side back-channel:

    "GET /auth/oidc/callback?...code=..."  302  2.125 2.125
    "GET /auth/failure?message=openid_connect_request_failed&...&strategy=oidc"  200

Four of those, at 2.125 / 2.015 / 2.063 / 2.014 seconds. That is not the plugin's
10s HTTP timeout; it is Discourse's DNS budget, hard-coded at 2s in
lib/final_destination/resolver.rb (connect_timeout arrives nil, so the default
applies). openid_connect_request_failed has exactly one emitter --
omniauth_open_id_connect.rb:147-155, rescue Faraday::Error -- and the alternative,
SocketError -> LookupFailedError, is not a Faraday::Error and would have produced a
500 rather than the observed 302.

The correlation leaves no room: across 18 back-channel requests, all from
192.168.9.3 with UA Faraday v2.14.3, there are exactly two complete token 200 +
userinfo 200 pairs -- and exactly two specs passed. Thirteen truncated flows,
thirteen failures. No test that got a complete exchange failed; none that failed got
one.

Why discourse alone: discourse.inspect.json:72 reads "ExtraHosts": null. Grepping the
whole rescue bundle for the pin finds nextcloud, nextcloud-proxy, mailu-admin,
prometheus and prometheus-sso-proxy. Discourse could not have it: config.yml.j2's
docker_args: carried only --network= and --name=. It is built by discourse_docker's
launcher, not by a compose file, so the lookup's rendered block has nowhere to go --
hence entries_only, which returns the strings and lets the template write
--add-host= lines. The pin itself is NOT re-derived: _sso_pins() and
_gateway_address() stay the single place that knows compose from swarm.

Its existing allowed_internal_hosts cannot help, because ssrf_detector's
lookup_and_filter_ips resolves BEFORE host_bypasses_checks?; the setting only makes a
private answer acceptable once it arrives.

Rendered through a real Templar both ways: with SSO on, the two --add-host lines land
between the networks and --name; with SSO off the output is byte-identical to today,
so clearnet and variant-1 deployments render an unchanged app.yml and trigger no
launcher rebuild. 24 lookup tests green.

Not closed: the biber persona has never passed, here or in run 33317483326. Its
failure text and code path match administrator, which did pass, so it is explained --
but a persona-specific second defect is not positively excluded. Deploying discourse
variant 0 locally, which already has sso and tor enabled, settles it.

Separately worth queueing: discourse's own meta/variants.yml variant 1 sets
sso.enabled: false and only variant 1 is scheduled, so the role that owns these specs
never runs them. Only partner rounds like Nextcloud#7 catch this class.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-01 12:00:56 +02:00
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