feat(Clash): Add routing rules and enable routing option for Clash subscriptions (#4904)

* feat(clash): add routing rules and enable routing option for Clash/Mihomo subscriptions

Allows adding custom YAML blocks and placeholders to Clash exports.

Why: Shifting routing to the client prevents server IP exposure for
DIRECT traffic and reduces unnecessary server bandwidth/CPU usage.

* fix

---------

Co-authored-by: Misfit-s <>

sub/sub.go

@@ -140,6 +140,16 @@ func (s *Server) initRouter() (*gin.Engine, error) {
 		SubJsonRules = ""
 	}
 
+	SubClashEnableRouting, err := s.settingService.GetSubClashEnableRouting()
+	if err != nil {
+		SubClashEnableRouting = false
+	}
+
+	SubClashRules, err := s.settingService.GetSubClashRules()
+	if err != nil {
+		SubClashRules = ""
+	}
+
 	SubTitle, err := s.settingService.GetSubTitle()
 	if err != nil {
 		SubTitle = ""
@@ -226,7 +236,7 @@ func (s *Server) initRouter() (*gin.Engine, error) {
 
 	s.sub = NewSUBController(
 		g, LinksPath, JsonPath, ClashPath, subJsonEnable, subClashEnable, Encrypt, ShowInfo, RemarkModel, SubUpdates,
-		SubJsonFragment, SubJsonNoises, SubJsonMux, SubJsonRules, SubTitle, SubSupportUrl,
+		SubJsonFragment, SubJsonNoises, SubJsonMux, SubJsonRules, SubClashEnableRouting, SubClashRules, SubTitle, SubSupportUrl,
 		SubProfileUrl, SubAnnounce, SubEnableRouting, SubRoutingRules)
 
 	return engine, nil