Closes Top-10 fix#8 of the 2026-05-02 deployment-target audit
re-run (see cowork/deployment-target-audit-2026-05-02-rerun/
RESULTS.md). Pre-fix, every connector's runPostDeployVerify used
linear backoff (default 3 attempts × 2s linear waits). Linear
backoff misbehaves under load-balanced rollouts: the verify
probe hits a random LB-backed pod, and 3 × 2s often falls into
the worst case where match-fingerprint pods stop responding by
attempt 3 due to LB session-stickiness cycles.
This commit:
1. New shared helper internal/tlsprobe/retry.go::
VerifyWithExponentialBackoff. Default 3 attempts; 1s initial,
16s cap. Doubling pattern: 1s → 2s → 4s → 8s → 16s. probe
func(ctx) error signature so connectors compose
handshake + fingerprint-compare into one lambda.
2. Each connector's runPostDeployVerify (nginx, apache, haproxy,
traefik, envoy, postfix, dovecot) rewired to call the
shared helper. Per-connector signature unchanged.
3. New PostDeployVerifyMaxBackoff time.Duration field added to
each connector's Config. Operators preserving V2 linear
behavior set PostDeployVerifyMaxBackoff equal to
PostDeployVerifyBackoff.
4. Tests:
- tlsprobe/retry_test.go: TestVerifyWithExponentialBackoff_
GrowthAndCap + TestVerifyWithExponentialBackoff_
StopsOnFirstSuccess + TestVerifyWithExponentialBackoff_
CtxCancellation.
- One Test<Connector>_VerifyExponentialBackoff_
GrowsBetweenAttempts per connector (6 total across
postfix, nginx, apache, haproxy; traefik and envoy
connectors use unique test signatures so test wiring
deferred to future unification).
5. docs/deployment-atomicity.md Section 4 updated:
'linear backoff' → 'exponential backoff (1s → 16s cap)';
YAML example shows the new field.
Backward-compat note: PostDeployVerifyBackoff was interpreted as
the linear interval pre-fix; post-fix it's interpreted as the
initial backoff (which doubles each attempt). Operators using
the default value (2s) see waits of 2s → 4s → 8s instead of
2s → 2s → 2s. For LB-rollout cases this is the intended
behavior; for single-target deploys the wall-clock is slightly
longer (12s vs 6s for 3 attempts). Operators preserving V2
linear semantics: set PostDeployVerifyMaxBackoff equal to
PostDeployVerifyBackoff.
Verified locally:
- gofmt clean.
- go test -short -count=1 ./internal/tlsprobe/...
./internal/connector/target/{postfix,nginx,apache,haproxy}/... green.
Audit reference: cowork/deployment-target-audit-2026-05-02-rerun/
RESULTS.md Top-10 fix#8.
Mechanical reformat. The new 'gofmt drift' CI step (added in
ci-pipeline-cleanup Phase 4, commit 0f205a8) surfaced 111 files
with accumulated gofmt drift across cmd/, internal/, and deploy/test/.
Each file's diff is gofmt-standard: whitespace adjustments, intra-
group import sorting (alphabetical by import path within blank-line-
separated groups), and struct-tag column alignment. No semantic
changes — verified via 'git diff --ignore-all-space' which shows only
the line-position deltas from import reordering.
The gate stays in place after this commit. Going forward it catches
gofmt drift at PR time.
Closes H-009 + L-001 + L-007 + L-008 + L-016 + L-017 + L-018 + M-027
from comprehensive-audit-2026-04-25.
H-009 — README JWT verified-already-clean
README has zero JWT mentions at audit time. docs/architecture.md
correctly documents JWT/OIDC integration via authenticating-gateway
pattern (line 905-912).
.github/workflows/ci.yml: new step
'Forbidden README JWT advertising regression guard (H-009)'
greps README for JWT-as-supported phrasing; passes verbatim
(gateway / pre-G-1) but fails build on net-new advertising.
L-001 (CWE-295) — InsecureSkipVerify per-site justification
Audit count was 8; recon found 13 production sites.
docs/tls.md: new 'InsecureSkipVerify justifications' table
enumerates each site by file:line with per-site rationale.
cmd/agent/verify.go:78, internal/tlsprobe/probe.go:54,
internal/service/network_scan.go:460: each previously-bare
InsecureSkipVerify: true now carries //nolint:gosec.
.github/workflows/ci.yml: new step
'Forbidden bare InsecureSkipVerify regression guard (L-001)'
fails build if any net-new ISV lands in non-test .go without
nolint:gosec on the same or preceding line.
L-007 — README dependency-audit commands
README.md: new Dependencies section with go list -m all | wc -l,
go mod why, govulncheck ./.... Honors operating-rules invariant.
L-008 — Release-time govulncheck gate
.github/workflows/release.yml: new 'Install govulncheck' +
'Run govulncheck (release gate)' steps in the matrix job.
Pinned to same install path as ci.yml. Default exit code
semantics (fail on called-vuln only, deferred-call advisories
tracked on master via L-021) keeps the gate appropriate.
L-016 — architecture.md drift fixes
docs/architecture.md: system-components diagram's '21 tables'
annotation removed (current 23; replaced with TEXT-keys
descriptor); connector-architecture '9 connectors' prose
replaced with grep ref + current 12-issuer list (added
Entrust/GlobalSign/EJBCA which were missing); API-design
'97 operations / 107 total' replaced with grep commands.
Connector subgraphs verified-current at 12/13/6.
L-017 — workspace CLAUDE.md verified-already-clean
Bundle B's pre-commit-gate refactor already converted current-
state numeric claims to grep commands. Phase 0 recon confirmed
zero remaining hardcoded counts.
L-018 — Defect age table
cowork/comprehensive-audit-2026-04-25/defect-age.md (NEW):
Tabulates all 9 High findings with first-mentioned commit,
closing bundle, days-open. Methodology snippet for re-running.
Key finding: 8 of 9 closed within 24h of audit publication.
M-027 — OpenAPI parity verified-already-clean
Audit's 'router 121 vs OpenAPI 125 — 4-op gap' was wrong
methodology. The 4-op 'gap' was exactly the 4 routes registered
via r.mux.Handle (auth-exempt allowlist) instead of r.Register.
When you count both dispatch shapes the totals match exactly.
internal/api/router/openapi_parity_test.go (NEW):
TestRouter_OpenAPIParity AST-walks router.go for both
Register and mux.Handle calls + walks api/openapi.yaml's
path/method nesting + asserts the sets match. Adding a route
without updating the spec fails CI permanently.
Audit deliverables:
audit-report.md: score 38/55 -> 46/55 closed
(High 7/9 -> 8/9; Medium 20/27 -> 21/27; Low 8/19 -> 14/19)
findings.yaml: 8 status flips open -> closed
defect-age.md: new file
certctl/CHANGELOG.md: Bundle D section
Verification:
TestRouter_OpenAPIParity PASS
L-001 grep guard self-test (after //nolint:gosec adds) PASS
H-009 grep guard self-test PASS
go test -count=1 -short on changed packages green
golangci-lint (unused linter) flagged createTestCert as dead code —
only createTestCertWithKey is called by the actual tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
shankar0123