all: implement router setup for ddwrt

internal/router/service.go

@@ -0,0 +1,49 @@
+package router
+
+import (
+	"os"
+
+	"github.com/kardianos/service"
+)
+
+func init() {
+	system := &linuxSystemService{
+		name:   "ddwrt",
+		detect: func() bool { return Name() == DDWrt },
+		interactive: func() bool {
+			is, _ := isInteractive()
+			return is
+		},
+		new: newddwrtService,
+	}
+	systems := append([]service.System{system}, service.AvailableSystems()...)
+	service.ChooseSystem(systems...)
+}
+
+type linuxSystemService struct {
+	name        string
+	detect      func() bool
+	interactive func() bool
+	new         func(i service.Interface, platform string, c *service.Config) (service.Service, error)
+}
+
+func (sc linuxSystemService) String() string {
+	return sc.name
+}
+func (sc linuxSystemService) Detect() bool {
+	return sc.detect()
+}
+func (sc linuxSystemService) Interactive() bool {
+	return sc.interactive()
+}
+func (sc linuxSystemService) New(i service.Interface, c *service.Config) (service.Service, error) {
+	return sc.new(i, sc.String(), c)
+}
+
+func isInteractive() (bool, error) {
+	ppid := os.Getppid()
+	if ppid == 1 {
+		return false, nil
+	}
+	return true, nil
+}