Files
certctl/internal/config
shankar0123 c461ef3339 refactor(config): extract SCEP family + helpers to its own file (Phase 9, 3 of N)
Continuing Phase 9 ARCH-M2 closure. Sprints 1+2 extracted pure-data
structs (NotifierConfig, then the ACME family). Sprint 3 is the
first split that ALSO moves helper functions — the SCEP family has
three structs AND three unexported package-internal helpers that
move together.

What moved
==========
  internal/config/scep.go (new, 402 lines including BSL header +
                          Phase 9 doc-comment + the 3 imports +
                          3 structs + 3 helpers verbatim)

Three structs:
  - SCEPConfig                 (top-level: Enabled + Profiles slice
                                + legacy single-profile flat fields
                                kept for backward compat)
  - SCEPProfileConfig          (one endpoint binding: PathID,
                                IssuerID, ProfileID, ChallengePassword,
                                RA cert/key, MTLSEnabled + bundle path,
                                per-profile Intune block)
  - SCEPIntuneProfileConfig    (Enabled, ConnectorCertPath, Audience,
                                ChallengeValidity, PerDeviceRateLimit24h,
                                ClockSkewTolerance)

Three unexported helpers:
  - loadSCEPProfilesFromEnv()       — reads CERTCTL_SCEP_PROFILES +
                                      expands each name into a
                                      SCEPProfileConfig via the
                                      CERTCTL_SCEP_PROFILE_<NAME>_*
                                      indexed env-var family.
  - mergeSCEPLegacyIntoProfiles()   — backward-compat shim: synthesize
                                      Profiles[0] from the legacy flat
                                      fields when Profiles is empty.
  - validSCEPPathID()               — path-segment validator (ASCII
                                      [a-z0-9-], no leading/trailing
                                      hyphen, empty allowed).

Why move the helpers along
==========================
Each helper is exclusively SCEP-specific: live grep across the repo
shows ZERO callers outside internal/config/config.go's Load() and
Validate(). Both still live in config.go and continue to resolve
the moved helpers via same-package lookup. Specifically:
  - Load() (still in config.go) calls loadSCEPProfilesFromEnv() during
    initial cfg.SCEP construction (call site at the original line ~1840,
    now closer to line ~1840 after Sprints 1+2 + 3 deletions).
  - Load() calls mergeSCEPLegacyIntoProfiles(&cfg.SCEP) after the
    initial profile-load.
  - Validate() calls validSCEPPathID(p.PathID) per-profile in the
    Profiles-iteration loop.

The unexported helpers getEnv / getEnvBool / getEnvInt / getEnvDuration
used by loadSCEPProfilesFromEnv stay in config.go (shared across every
config family); same-package resolution makes the calls work.

What stayed in config.go
========================
- All Load() + Validate() bodies — the SCEP-specific call sites stay
  where they are (cross-cutting validation logic, not split-target).
- Every getEnv* helper.
- The Config{}.SCEP master-struct field declaration.

Edit shape
==========
The edit was performed in two sed passes:
  1. sed -i '775,1004d' — deleted the SCEP struct block (the three
     types + their doc-comments).
  2. sed -i '1813,1916d' — deleted the SCEP helper-function block
     (the three helpers + their doc-comments).
Then gofmt -w to collapse a residual double-blank-line at the first
join point. The two-pass approach was necessary because the structs
and helpers live in different regions of config.go (struct
definitions in the top half, function bodies near the bottom).

Public-surface invariant
========================
Every type, field, exported method, and doc-comment is byte-identical
to pre-split. Package stays `config`. Every caller's
`config.SCEPConfig` / `config.SCEPProfileConfig` /
`config.SCEPIntuneProfileConfig` import path is preserved without
modification. The three helpers are unexported so their move is
invisible to package consumers; same-package callers in config.go
continue to resolve them via the package symbol table.

Verification (all clean):
  gofmt -l internal/config/                 → clean (after -w)
  go build ./internal/config/...            → clean
  go test ./internal/config/... -count=1    → ok (0.68s)
  staticcheck ./internal/config/...         → clean
  go build ./internal/api/router/...
          ./internal/scheduler/...
          ./cmd/server/...                  → clean (broader importers
                                              still resolve every type)
  grep -nE '^type SCEP|^func .*SCEP' internal/config/config.go
    → empty (none remain in config.go)
  grep -nE '^type SCEP|^func .*SCEP' internal/config/scep.go
    → 3 types + 3 funcs (correct: SCEPConfig, SCEPProfileConfig,
                                  SCEPIntuneProfileConfig,
                                  loadSCEPProfilesFromEnv,
                                  mergeSCEPLegacyIntoProfiles,
                                  validSCEPPathID)

LOC delta:
  config.go:  3108 → 2774  (-334 lines: -230 from struct block,
                                        -103 from helper block,
                                        -1 from double-blank collapse)
  scep.go:    new, 402 lines (incl. 72-line Phase 9 doc-comment + BSL
                              header + package decl + 3 imports)

Cumulative Phase 9 progress (Sprints 1+2+3 from config.go):
  Pre-Phase-9:                3403 LOC
  After Sprint 1 (Notifier):  3335 LOC  (-68)
  After Sprint 2 (ACME):      3108 LOC  (-227)
  After Sprint 3 (SCEP):      2774 LOC  (-334)
  Total Sprint 1+2+3:         -629 LOC  (-18.5%)

Pattern lesson logged
=====================
The "Do not assume line numbers" rule continues to pay off: every
sprint of Phase 9 has touched line numbers from prior sprints
(Sprint 1's 65-line removal shifted SCEPConfig from line 1083 to
1015 to its Sprint 3 starting position of 786). The Phase 9 prompt
told us to re-derive every fact; the live-grep audit at the start
of each sprint catches the drift.

Next queued (Sprint 4): EST family from config.go →
internal/config/est.go (~250-300 LOC including ESTConfig +
ESTProfileConfig + loadESTProfilesFromEnv +
mergeESTLegacyIntoProfiles + parseAuthModes + validESTPathID +
validESTAuthMode). Same complexity shape as SCEP — three structs
+ multiple helpers + same Load()/Validate() callers that stay
in config.go.

Closes: cowork/certctl-architecture-diligence-audit.html#fix-ARCH-M2
        (partial — 3 of 12 — full ARCH-M2 closure is the aggregate)
2026-05-14 04:19:24 +00:00
..