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Update golangci-lint to v2.12.2 with canonical config (#29 )

Bumps golangci-lint from v2.1.6 (digest-only pin in the `Dockerfile` lint stage) to v2.12.2, pinned by tag and digest (Debian-based image).

Replaces `.golangci.yml` with the canonical strict config: all linters enabled except the standard disable list (`exhaustruct`, `depguard`, `godot`, `wsl`, `wrapcheck`, `varnamelen`), `lll` at 88, `funlen` 80/50, `cyclop` 15, `dupl` 100, and test files are now linted (the old config had `tests: false`, an enable-only list of ~20 linters, `lll` 120, and a blanket exclusion of `internal/macse`).

The stricter config surfaced ~1550 findings, all fixed:

- `wsl_v5` (439) / `nlreturn` (24): blank-line insertions
- `lll` (309): line wrapping at 88 columns; long literals split with `+` concatenation, values unchanged
- `noinlineerr` (130): `if err := ...` split into assignment plus check
- `paralleltest` (116): `t.Parallel()` added to tests without shared state; reasoned `//nolint` where `t.Setenv` or shared fixtures forbid it
- `err113` (97): package-level sentinel errors (new `internal/vault/errors.go`), `%w` wrapping, `errors.Is`
- `perfsprint` (74) / `modernize` (39) / `intrange`: `strconv`, `errors.New`, `slices.Contains`, `any`, `SplitSeq`
- `goconst` (40) / `dupword` (41) / `testifylint` (42) / `thelper` (33): constants, assertion fixes, `t.Helper()`
- `noctx` (22): `exec.CommandContext` for gpg/CLI invocations
- `testpackage` (18): black-box tests moved to `_test` packages where they use only exported identifiers; white-box files carry a reasoned `//nolint`
- `funlen`/`cyclop`/`gocognit`/`nestif`/`dupl`: behavior-preserving helper extraction
- assorted singletons: `gosec`, `gosmopolitan`, `funcorder`, `nonamedreturns`, `makezero`, `prealloc`, `godox`, `nolintlint`, `ireturn`, `nilnil`, `gochecknoinits`

## User-visible strings

**None changed.** Every error message this branch composes is byte-identical to the one `main` composes.

The `err113` sentinels are shaped so `fmt.Errorf` reassembles the original text around them: the sentinel carries the fixed words and the caller supplies the interpolated value in the position it has always occupied. Where the value sits mid-sentence the sentinel holds only a fragment (e.g. `vault.ErrVaultNotFound` is `"does not exist"`, composed by its caller as `vault &lt;name&gt; does not exist`); each such sentinel documents the message it participates in.

Verified mechanically, not by inspection: every `fmt.Errorf` and `errors.New` call site in both trees is parsed, the `Error()` text of any sentinel passed to `%w` is substituted in, and the resulting sets of composed message templates are compared. All 350 templates `main` produces are still produced, character for character. The set of lost or altered messages is empty.

## `unlocker list`

`findUnlockerIDByMetadata` returns `(string, error)` rather than signalling failure with an empty ID, so an unreadable `unlockers.d` is no longer indistinguishable from "no matching entry". `UnlockersList` skips such an entry with a warning naming the directory — its behavior before the scan was extracted into a helper — instead of emitting a row under a synthesized fallback ID that no `unlocker remove` or `unlocker select` can match and that suppresses the current-unlocker marker. The duplicate-check and shell-completion callers skip on the same condition, matching their pre-extraction behavior. Covered by `internal/cli/unlockers_list_test.go`.

`TODO.md` records the change plus follow-ups (version-completion TODOs formerly in code comments, darwin-gated files exceeding 88 columns that Linux CI does not lint).

`make check` is green and the pinned v2.12.2 image reports `0 issues.` Note the test suite needs the memlock ulimit from `script/cibuild` for the 10MB memguard test; that requirement is pre-existing.

Not changed: `script/bootstrap` installs golangci-lint via the system package manager (no version pin to bump), and `script/lint` invokes whatever `golangci-lint` is on PATH. golangci-lint v2.12 deprecates `gomodguard` in favor of `gomodguard_v2` (warning only); the canonical config owns that decision.

Co-authored-by: sneak <sneak@sneak.berlin>
Reviewed-on: #29
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>

2026-08-10 15:23:33 +02:00

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Workflow

branch (from main)
do the work in Next Step
move Next Step to the top of Completed Steps
move the top item of Future Steps into Next Step
commit (TODO.md changes in the same commit as the work)
merge to main if the branch is not protected, otherwise open a PR
push

Status

pre-1.0. No git tags. TODO.md carries open 1.0 security blockers. Work in flight on branch secure-enclave-unlocker (clean tree as of 2026-07-06).

Next Step

Bring the repo into policy compliance in one commit:

Add fmt-check and hooks targets to the Makefile (test/lint/fmt/check/ docker already exist).
Add REPO_POLICIES.md and .editorconfig.
Add .gitea/workflows/check.yml running make check.
Verify Dockerfile base images are pinned by sha256.

Completed Steps

2026-08-07: Updated golangci-lint to v2.12.2 with the canonical .golangci.yml (all linters enabled minus the standard disable list, lll 88, tests linted); bumped the Dockerfile lint-stage image to the tagged v2.12.2 Debian digest; fixed all ~1550 new findings across internal/ and pkg/ (line wrapping, wsl_v5 blank lines, sentinel errors for err113, t.Parallel() where safe, _test package conversions, complexity/dupl helper extraction) on branch golangci-v2.12.2. Reworked after review: the err113 sentinels in internal/vault, internal/secret, internal/cli and pkg/bip85 were reshaped so every composed error message is byte-identical to main, and findUnlockerIDByMetadata now returns an error so unlocker list skips an unreadable unlockers.d entry with a warning instead of emitting a fabricated fallback ID.
2026-07-07 Adopted scripts-to-rule-them-all: script/ entrypoints, Makefile shims, README Entrypoints section
2026-03-11: Secure Enclave unlocker for hardware-backed secret protection, plus review fixes (stub panics, derivation index, tests, README) on branch secure-enclave-unlocker.
2026-02-28: Repo cleanup, removed stale .cursorrules and coverage.out.
Audit fix wave (issues #1, #2, #3, #13, #14): skip unlockers with missing metadata, allow uppercase secret names, fix hardcoded derivation index, validate names in GetSecretVersion against path traversal, return errors instead of panicking, add Warn() on silent anomalies.
Memory security hardening: LockedBuffer used through encrypt/decrypt paths (Save/EncryptWithPassphrase/GetValue/gpg helpers), deprecated bare-[]byte APIs removed.
Per-secret keypair architecture, vault package refactor, versioning with --version, comprehensive test suite with in-memory filesystem.
Debug logging system (slog, GODEBUG flag, TTY-aware output).
Renamed SEP unlocker to Keychain, reorganized import commands.
2025-05-28: Initial implementation (vault, age encryption, mnemonic, CLI).

Future Steps

Compliance (after Next Step lands): keep main green under the new .gitea workflow; run make check before every merge.
Implement version-number shell completion for the second arg of secret version promote and secret version rm (internal/cli/version.go; was an in-code TODO removed for godox).
Cover mnemonic-vs-xprv identity consistency in pkg/agehd/agehd_test.go TestMnemonicVsXPRVConsistency (was an in-code FIXME removed for godox).
Darwin-gated files (internal/secret/keychainunlocker.go, seunlocker_darwin.go, internal/macse/macse_darwin.go, related tests) are not linted on the Linux CI runner and still contain lines over the new 88-column limit; they will surface if lint ever runs on macOS.
Merge secure-enclave-unlocker to main once review is done.
1.0 critical security blockers (from repo TODO.md):
- Command injection: GPG key IDs passed unescaped to exec.Command (pgpunlocker.go:323-327); data.String() passed unescaped to the security command (keychainunlocker.go:472-476).
- Memory security: KeychainData stores AgePrivKeyPassphrase as a plain string (keychainunlocker.go:342,393-396); age identity .String() creates unprotected copies (keychainunlocker.go:356, pgpunlocker.go:256, version.go:155); age secret key held in a plain string in cli/crypto.go:86,91,113; private keys exposed via buffer.Bytes() to GPGEncryptFunc and EncryptWithPassphrase.
- Race conditions: no file locking in vault/secrets.go:142-176; non-atomic writes can leave the vault inconsistent.
- Input validation: dots in secret names risk path traversal (vault/secrets.go:75-99); no maximum secret size (DoS).
- Timing attacks: bytes.Equal passphrase compare (cli/init.go: 209-216); non-constant-time public key compare (vault.go:95-100).
High priority:
- Return errors instead of panicking on corrupted metadata (pgpunlocker.go:116, keychainunlocker.go:141).
- Secure temporary file handling and cleanup.
- Print cobra usage only for argument errors, not internal failures.
- Initialize a default unlock key at vault creation.
- Confirmation prompts for destructive operations (keys rm, vault deletion).
- Add secret rm and vault deletion commands.
Medium priority:
- Standardize error messages; stop leaking internals.
- Graceful handling of corrupted or missing key files with recovery suggestions.
- Validate GPG key existence before creating PGP unlock keys.
- Split oversized CLI functions.
- Document env var security (SB_UNLOCK_PASSPHRASE, SB_SECRET_MNEMONIC); clear after use.
- mlock/munlock for sensitive allocations.
Cleanups: read statedir from environment or default instead of passing it around.
Enhancements: help examples, shell completion, colored output, --quiet flag, name suggestions on miss, audit logging, hardware integration tests (Keychain, GPG), naming consistency, vault export/import, batch operations, search, secret metadata (descriptions, tags).