all: support GL.iNET router

cmd/ctrld/cli.go

@@ -137,6 +137,7 @@ func initCLI() {
 					if err != nil {
 						mainLog.Fatal().Err(err).Msg("failed create new service")
 					}
+					s = newService(s)
 					serviceLogger, err := s.Logger(nil)
 					if err != nil {
 						mainLog.Error().Err(err).Msg("failed to get service logger")
@@ -310,6 +311,7 @@ func initCLI() {
 				mainLog.Error().Msg(err.Error())
 				return
 			}
+			s = newService(s)
 			tasks := []task{
 				{s.Stop, false},
 				{s.Uninstall, false},
@@ -371,6 +373,7 @@ func initCLI() {
 				mainLog.Error().Msg(err.Error())
 				return
 			}
+			s = newService(s)
 			initLogging()
 			if doTasks([]task{{s.Stop, true}}) {
 				prog.resetDNS()
@@ -394,6 +397,7 @@ func initCLI() {
 				mainLog.Error().Msg(err.Error())
 				return
 			}
+			s = newService(s)
 			initLogging()
 			if doTasks([]task{{s.Restart, true}}) {
 				mainLog.Notice().Msg("Service restarted")
@@ -414,6 +418,7 @@ func initCLI() {
 				mainLog.Error().Msg(err.Error())
 				return
 			}
+			s = newService(s)
 			status, err := serviceStatus(s)
 			if err != nil {
 				mainLog.Error().Msg(err.Error())

cmd/ctrld/service.go

@@ -7,8 +7,40 @@ import (
 	"os/exec"
 
 	"github.com/kardianos/service"
+
+	"github.com/Control-D-Inc/ctrld/internal/router"
 )
 
+func newService(s service.Service) service.Service {
+	// TODO: unify for other SysV system.
+	if router.IsGLiNet() {
+		return &sysV{s}
+	}
+	return s
+}
+
+// sysV wraps a service.Service, and provide start/stop/status command
+// base on "/etc/init.d/<service_name>".
+//
+// Use this on system wherer "service" command is not available, like GL.iNET router.
+type sysV struct {
+	service.Service
+}
+
+func (s *sysV) Start() error {
+	_, err := exec.Command("/etc/init.d/ctrld", "start").CombinedOutput()
+	return err
+}
+
+func (s *sysV) Stop() error {
+	_, err := exec.Command("/etc/init.d/ctrld", "stop").CombinedOutput()
+	return err
+}
+
+func (s *sysV) Status() (service.Status, error) {
+	return unixSystemVServiceStatus()
+}
+
 type task struct {
 	f            func() error
 	abortOnError bool

internal/router/openwrt.go

@@ -13,6 +13,16 @@ var errUCIEntryNotFound = errors.New("uci: Entry not found")
 
 const openwrtDNSMasqConfigPath = "/tmp/dnsmasq.d/ctrld.conf"
 
+// IsGLiNet reports whether the router is an GL.iNet router.
+func IsGLiNet() bool {
+	if Name() != OpenWrt {
+		return false
+	}
+	buf, _ := os.ReadFile("/proc/version")
+	// The output of /proc/version contains "(glinet@glinet)".
+	return bytes.Contains(buf, []byte(" (glinet"))
+}
+
 func setupOpenWrt() error {
 	// Delete dnsmasq port if set.
 	if _, err := uci("delete", "dhcp.@dnsmasq[0].port"); err != nil && !errors.Is(err, errUCIEntryNotFound) {