platform: Export `NeedWIFIState` for Android

adapter/router.go

@@ -33,6 +33,8 @@ type Router interface {
 
 	RuleSet(tag string) (RuleSet, bool)
 
+	NeedWIFIState() bool
+
 	Exchange(ctx context.Context, message *mdns.Msg) (*mdns.Msg, error)
 	Lookup(ctx context.Context, domain string, strategy dns.DomainStrategy) ([]netip.Addr, error)
 	LookupDefault(ctx context.Context, domain string) ([]netip.Addr, error)

experimental/libbox/service.go

@@ -77,6 +77,10 @@ func (s *BoxService) Close() error {
 	return s.instance.Close()
 }
 
+func (s *BoxService) NeedWIFIState() bool {
+	return s.instance.Router().NeedWIFIState()
+}
+
 var (
 	_ platform.Interface = (*platformInterfaceWrapper)(nil)
 	_ log.PlatformWriter = (*platformInterfaceWrapper)(nil)

route/router.go

@@ -560,13 +560,12 @@ func (r *Router) Start() error {
 			}
 		}
 	}
-	if needWIFIStateFromRuleSet || r.needWIFIState {
+	if (needWIFIStateFromRuleSet || r.needWIFIState) && r.platformInterface != nil {
 		monitor.Start("initialize WIFI state")
-		if r.platformInterface != nil && r.interfaceMonitor != nil {
-			r.interfaceMonitor.RegisterCallback(func(_ int) {
-				r.updateWIFIState()
-			})
-		}
+		r.needWIFIState = true
+		r.interfaceMonitor.RegisterCallback(func(_ int) {
+			r.updateWIFIState()
+		})
 		r.updateWIFIState()
 		monitor.Finish()
 	}
@@ -716,6 +715,10 @@ func (r *Router) RuleSet(tag string) (adapter.RuleSet, bool) {
 	return ruleSet, loaded
 }
 
+func (r *Router) NeedWIFIState() bool {
+	return r.needWIFIState
+}
+
 func (r *Router) RouteConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
 	if r.pauseManager.IsDevicePaused() {
 		return E.New("reject connection to ", metadata.Destination, " while device paused")