Add/list/delete of sending domains with per-domain DKIM keys and the
OpenDKIM tables that drive signing (spec 6, 7.2.2-4, 7.2.10).
internal/domain:
- Pure-Go RSA-2048 keygen; PKCS#1 PEM written atomically at 0640; the
published DNS TXT record is derived from the key on disk (single source
of truth) rather than persisted. No os/exec for key generation.
- KeyTable/SigningTable fully regenerated from the registry on every
add/delete (idempotent), written atomically; SigningTable via refile:
with *@domain, KeyTable with absolute key paths. Table writer refuses
any unsafe character as a backstop (spec 7.6.4).
- Reload without root: the unprivileged panel signals OpenDKIM through
supervisord (`supervisorctl signal USR1 opendkim`, fixed args, no
shell, no user input — spec 7.6.3). An existing key is reused, never
overwritten, so re-adding a domain keeps its published DNS valid.
- Service orchestrates registry -> key -> table rebuild -> reload, with
rollback of the row if a downstream step fails; delete cascades apps
via the DB FK and removes the key + table entries.
Infra:
- Shared `selfpost` group bridges panel (writes keys) and opendkim
(reads them); /data/opendkim is setgid so panel-created files inherit
the group, keys are 0640, RequireSafeKeys is disabled by design.
- opendkim.conf moves from verify-only (Mode v) to signing (Mode s).
- entrypoint.sh normalises the DKIM tree on every start (ownership,
setgid, perms, empty tables before opendkim starts) — self-healing
after a restore.
- supervisord control socket opened to the `selfpost` group so the panel
can request the reload.
web/store:
- Strict domain-name validation (whitelist [a-z0-9.-], DNS shape, >=2
labels), lower-case normalisation (spec 7.6.2).
- Domain queries with application counts; delete relies on ON DELETE
CASCADE. Dashboard lists domains + add form; domain page shows the
DKIM record; a dedicated confirm page warns about the app cascade
before deletion (spec 7.2.4); manual reload button (spec 7.2.12,
OpenDKIM side; Postfix reload lands in Phase 5).
- Authenticated routes moved to a sub-mux using Go 1.22 method/wildcard
patterns.
Tests: validateDomain, DKIM keygen/record roundtrip, table rendering +
injection-safety, key reuse, store cascade. Verified on the dev server:
gofmt/vet/test green, image builds, container e2e (add/delete a domain,
DKIM record shown, OpenDKIM reads panel keys and reloads, keys and
tables persist across a restart).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add section 10.1 covering tag-triggered CI build, version from git tag
flowing into both ldflags and the image tag (enforcing the 7.5.A restore
invariant), and publishing to ghcr.io. Document Quay.io as an alternative
registry. Update 11.7 (GitHub is no longer a dumb mirror) and add the
workflow as deliverable 11.10.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
De-risk spike confirmed emersion/go-milter v0.4.1 (BSD-2) interoperates with
Postfix 3.7.11 (bookworm) over protocol v6: reads From/To(per-rcpt)/Subject/
queue-id, gets client IP from Connect(), and fails open when the milter dies.
Progress tracker updated; Phase 1 (Docker + supervisord) is next.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Go module (codeberg.org/mix/selfpost), two command skeletons (panel,
selfpost-backup) sharing internal/buildinfo for the -ldflags version stamp,
Makefile (static CGO_ENABLED=0 build), AGPL-3.0 LICENSE, README skeleton and
.gitattributes forcing LF (container scripts must not get CRLF).
Verified on the dev server: go vet clean, make build produces statically
linked binaries, version stamping works.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
12-phase plan derived from the spec, plus a durable progress tracker
(model-per-phase, resume-after-reset protocol, commit conventions).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
mix