fix: Linter warnings

Signed-off-by: Steffen Vogel <post@steffenvogel.de>

.golangci.yaml

@@ -48,7 +48,7 @@ linters:
   - errname # Checks that sentinel errors are prefixed with the `Err` and error types are suffixed with the `Error`.
   - errorlint # errorlint is a linter for that can be used to find code that will cause problems with the error wrapping scheme introduced in Go 1.13.
   - exhaustive # check exhaustiveness of enum switch statements
-  - exportloopref # checks for pointers to enclosing loop variables
+  - copyloopvar
   - forcetypeassert # finds forced type assertions
   - gci # Gci control golang package import order and make it always deterministic.
   - gochecknoglobals # Checks that no globals are present in Go code
@@ -98,7 +98,6 @@ linters:
   - gocyclo # Computes and checks the cyclomatic complexity of functions
   - godot # Check if comments end in a period
   - godox # Tool for detection of FIXME, TODO and other comment keywords
-  - gomnd # An analyzer to detect magic numbers.
   - ireturn # Accept Interfaces, Return Concrete Types
   - lll # Reports long lines
   - maintidx # maintidx measures the maintainability index of each function.

cmd/cmd.go

@@ -1,6 +1,8 @@
 // SPDX-FileCopyrightText: 2023-2024 Steffen Vogel <post@steffenvogel.de>
 // SPDX-License-Identifier: Apache-2.0
 
+//go:build darwin
+
 package main
 
 import (

ecdh/public_key.go

@@ -19,6 +19,7 @@ var _ dh.PublicKey = (*PublicKey)(nil)
 var (
 	ErrUnsupportedCurve = errors.New("unsupported curve")
 	ErrUnmarshal        = errors.New("failed to unmarshal key")
+	ErrParse            = errors.New("failed to parse")
 )
 
 type PublicKey struct {
@@ -39,19 +40,19 @@ func (pk *PublicKey) UnmarshalText(text []byte) error {
 	var curveName, keyStr string
 
 	if n, err := fmt.Sscanf(string(text), "ecdh:%s:pk:%s", &curveName, &keyStr); err != nil {
-		return fmt.Errorf("failed to parse: %w", err)
+		return fmt.Errorf("%w: %w", ErrParse, err)
 	} else if n != 1 {
-		return fmt.Errorf("failed to parse")
+		return ErrParse
 	}
 
 	curve := curveFromName(curveName)
 	if curve == nil {
-		return fmt.Errorf("unsupported curve: %s", curveName)
+		return fmt.Errorf("%w: %s", ErrUnsupportedCurve, curveName)
 	}
 
 	key, err := base64.StdEncoding.DecodeString(keyStr)
 	if err != nil {
-		return fmt.Errorf("failed to parse: %w", err)
+		return fmt.Errorf("%w: %w", ErrParse, err)
 	}
 
 	pk.PublicKey, err = curve.NewPublicKey(key)
@@ -81,6 +82,7 @@ func (pk *PublicKey) ECDSA() (*ecdsa.PublicKey, error) {
 		return nil, fmt.Errorf("%w: %v", ErrUnsupportedCurve, pk.Curve())
 	}
 
+	//nolint:staticcheck
 	x, y := elliptic.Unmarshal(curve, pk.Bytes())
 	if x == nil {
 		return nil, ErrUnmarshal

handshake/handshake_chained.go

@@ -27,9 +27,6 @@ func (cp ChainedHandshake) Secret(ctx context.Context) (s Secret, err error) {
 	res := make([]Secret, len(cp))
 
 	for i, p := range cp {
-		i := i
-		p := p
-
 		group.Go(func() (err error) {
 			res[i], err = p.Secret(ctx)
 			return err

handshake/key.go

@@ -33,6 +33,8 @@ func (k *Key) UnmarshalText(t []byte) (err error) {
 	parts := strings.Split(s, "_")
 
 	var protoParts int
+
+	//nolint:goconst
 	switch parts[0] {
 	case "Noise", "WireGuard":
 		protoParts = 5

internal/openpgp/objects.go

@@ -141,6 +141,7 @@ type ApplicationRelated struct {
 	Keys [4]KeyInfo
 }
 
+//nolint:gocognit
 func (ar *ApplicationRelated) Decode(b []byte) (err error) {
 	var v, w, x []byte
 	var t iso.Tag

provider/applese.go

@@ -1,6 +1,8 @@
 // SPDX-FileCopyrightText: 2023-2024 Steffen Vogel <post@steffenvogel.de>
 // SPDX-License-Identifier: Apache-2.0
 
+//go:build darwin
+
 package provider
 
 import (

provider/applese_test.go

@@ -1,6 +1,8 @@
 // SPDX-FileCopyrightText: 2023 Steffen Vogel
 // SPDX-License-Identifier: Apache-2.0
 
+//go:build darwin
+
 package provider
 
 import (

provider/openpgp.go

@@ -28,6 +28,7 @@ func (s *openpgpSlotRef) UnmarshalText(text []byte) error {
 		return ErrParse
 	}
 
+	//nolint:goconst
 	switch curve {
 	case "Secp256r1":
 	default: