Sociallogin creates a Nextcloud user as "<provider name>-<keycloak sub>",
and the provider name was the Keycloak domain. On an onion variant that
domain alone is 67 chars, so every OIDC callback died with
InvalidArgumentException "Username is too long" and HTTP 500 at
/apps/sociallogin/custom_oidc/auth.<onion> (run 34615516009,
Nextcloud#1, 204 occurrences). The whiteboard and admin OIDC specs failed
on the same login.
This is the second derived identifier an onion domain overflows; the
kernel hostname is the first, clamped to 63 bytes by container_hostname
since the pretix and bookwyrm fixes. The domain-or-entity rule now lives in
one lookup, bounded_name(application_id, max_length): the primary domain
when it fits, otherwise the entity name. container_hostname delegates to it
at 63 and keeps its eight callers and its behaviour.
The provider name is bounded_name('web-app-keycloak', 64 - 1 - 36), the uid
limit minus the separator and the UUID sub. A short clearnet domain stays
the name, so existing users keep their uids; an onion deploy gets
"keycloak", which, unlike a hash of the domain, survives a rotated onion
address.
Tests cover the lookup's fit, boundary and fallback cases and its argument
validation, container_hostname's delegation at 63, and the provider name's
room for the sub.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
3529 invalid comments in 528 files, grandfathered in while the linter
only saw the working-tree diff. Removal ran through the linter's own
collectors, so detection and deletion cannot drift: a comment whose
opener line is blank before it and whose closer line is blank after it
loses all its lines, anything else loses only the comment region, and a
line left holding a bare delimiter goes with it.
Five files keep their comments behind a nocheck marker instead. Four are
upstream configs whose inline docs are upstream's own (mautrix, systemd
journald, nextcloud-oidc-login, MediaWiki). In littlejs the
commented-out entries ARE the deactivation mechanism for an example
tile, so deleting them would delete configuration.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
`lookup('container_hostname', app)` returns the app's canonical primary
domain when it fits sethostname(2)'s 63-byte cap, else the short entity
name. Onion subdomains (sub.<56-char>.onion) overflow that limit and make
`docker run` fail with "sethostname: invalid argument", killing container
init on onion nodes. Replaces the seven roles that hostname'd their
container on the raw domain (bookwyrm, bridgy-fed, confluence, jira,
postmarks, pretix, xwiki) with the encapsulated lookup.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
kevinveenbirkenbachandClaude Opus 5