Maint: move custom config files to custom package

internal/openvpn/custom/custom.go

@@ -1,4 +1,4 @@
-package openvpn
+package custom
 
 import (
 	"errors"
@@ -20,7 +20,7 @@ var (
 	errExtractConnection = errors.New("cannot extract connection from custom configuration file")
 )
 
-func processCustomConfig(settings configuration.OpenVPN) (
+func ProcessCustomConfig(settings configuration.OpenVPN) (
 	lines []string, connection models.OpenVPNConnection, err error) {
 	lines, err = readCustomConfigLines(settings.Config)
 	if err != nil {

internal/openvpn/custom/custom_test.go

@@ -1,4 +1,4 @@
-package openvpn
+package custom
 
 import (
 	"errors"
@@ -13,7 +13,7 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func Test_processCustomConfig(t *testing.T) {
+func Test_ProcessCustomConfig(t *testing.T) {
 	t.Parallel()
 
 	file, err := os.CreateTemp("", "")
@@ -33,7 +33,7 @@ func Test_processCustomConfig(t *testing.T) {
 		Config: file.Name(),
 	}
 
-	lines, connection, err := processCustomConfig(settings)
+	lines, connection, err := ProcessCustomConfig(settings)
 	assert.NoError(t, err)
 
 	expectedLines := []string{

internal/openvpn/run.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/qdm12/gluetun/internal/constants"
 	"github.com/qdm12/gluetun/internal/models"
+	"github.com/qdm12/gluetun/internal/openvpn/custom"
 	"github.com/qdm12/gluetun/internal/provider"
 )
 
@@ -36,7 +37,7 @@ func (l *Loop) Run(ctx context.Context, done chan<- struct{}) {
 				lines = providerConf.BuildConf(connection, openVPNSettings)
 			}
 		} else {
-			lines, connection, err = processCustomConfig(openVPNSettings)
+			lines, connection, err = custom.ProcessCustomConfig(openVPNSettings)
 		}
 		if err != nil {
 			l.crashed(ctx, err)