2 Commits

Author SHA1 Message Date
steve a781e95c94 P3 follow-up: editable target dir, conditional --no-ownership, UK lint
Three small follow-ups from review:

1. Restore target is now operator-editable. Default value is the
   literal '\$HOME/rm-restore/<job-id>/' (agent expands \$HOME at
   run time using os.UserHomeDir(); also handles \${HOME} and ~/
   prefixes). Operator can replace with any absolute path.
   - ui_restore.go validates the input is either absolute or starts
     with one of the recognised prefixes; other env-var refs (\$PATH
     etc.) are deliberately rejected so operator paths can't pick up
     arbitrary agent env values.
   - host_restore.html replaces the read-only mono-text display with
     a real <input>; help text spells out that \$HOME resolves
     agent-side and <job-id> is substituted on dispatch.
   - install.sh + the systemd unit prep /root/rm-restore so the
     default works under the sandbox: ReadWritePaths gains a soft
     '-/root/rm-restore' entry (the '-' makes the bind-mount soft-fail
     if missing, but install.sh pre-creates it root-owned 0700).

2. --no-ownership flag now gated on restic version. The flag was
   added in restic 0.17 and 0.16 rejects it. Previously dropped it
   wholesale — that meant new-dir restores silently preserved
   ownership against design intent on 0.17+. Now the agent threads
   its detected restic version (sysinfo already collects it) through
   runner.Config -> restic.Env, and RunRestore appends --no-ownership
   only when AtLeastVersion(0, 17) returns true. 0.16 hosts still
   restore with original uid/gid; help text in the wizard explicitly
   notes this. The previous 'Original ownership is preserved' copy
   was wrong for new-dir mode and is corrected.

3. golangci-lint misspell locale switched US -> UK and the codebase
   swept (73 corrections, mostly behaviour/serialise/recognise/honour).
   Wire-format ErrorCode 'unauthorized' -> 'unauthorised' is a tiny
   contract change but the agent doesn't parse those codes today and
   no external API consumers exist yet. Tests passed before + after.

Tests:
- internal/restic/version_test.go covers Env.AtLeastVersion across
  edge cases (empty, exact match, patch above, minor below, non-
  numeric) and expandHome on \$HOME / \${HOME} / ~/, plus
  pass-through for absolute paths and refusal of other env vars.
- ui_restore_test updated: TargetDir now starts '\$HOME/rm-restore/'
  with the job_id substituted into the placeholder.

Live verified on the smoke env: default target restored to
/root/rm-restore/<job-id>/ as the agent's expanded \$HOME (2 files,
14 bytes); custom override '/tmp/custom-restore/<job-id>/' restored
into the agent's PrivateTmp namespace (1 file, 6 bytes); both jobs
'succeeded', exit 0.
2026-05-04 17:27:52 +01:00
steve 94149a7324 P3-X1: cancel-job feature
Wires the existing job_detail Cancel button (which was a UI stub) into
real backend behaviour:

- internal/api already declared MsgCommandCancel + CommandCancelPayload;
  promote those from forward-declarations to a working envelope. Agent
  side: cmd/agent/main.go drops the TODO-stub and gains a per-job
  ctx.CancelFunc map. runJob's switch is refactored around a small
  spawn() helper so each kind's goroutine derives a per-job context,
  registers the cancel, and removes itself on completion regardless of
  outcome. command.cancel looks up the func and fires it.
- internal/agent/runner.sendFinished now takes ctx and rebadges
  ctx.Canceled errors as JobCancelled (exit 130) rather than
  JobFailed. All Run* call sites updated.
- internal/restic.resticCmd sets cmd.Cancel to send SIGTERM (via
  build-tagged sigterm constant; os.Kill on Windows since SIGTERM
  isn't deliverable there) and cmd.WaitDelay=5s for the SIGKILL
  fallback. SIGTERM lets restic remove its lock file before exiting.
- New POST /api/jobs/{id}/cancel server endpoint validates the job
  is non-terminal and the host is online, sends command.cancel via
  the hub, writes a job.cancel audit row, returns 202. The agent's
  resulting job.finished (status=cancelled) is what actually
  transitions the row.

Tests:
- internal/server/http/cancel_test.go covers happy path (envelope
  shape + audit row), 409 for terminal jobs, 404 for missing jobs,
  503 for offline hosts.
- internal/agent/runner/cancel_test.go covers cancel mid-run: a fake
  restic that exec'd into 'sleep 30' is canceled 150ms after start
  and the resulting job.finished reports JobCancelled with exit 130
  in well under the WaitDelay.

Foundational for P3 restore (operator needs to be able to cancel a
running backup if they need to restore urgently). Independently useful
for prune/check/backup that are stuck.
2026-05-04 15:11:49 +01:00