Add cloudflared inbound support

include/cloudflared.go

@@ -0,0 +1,12 @@
+//go:build with_cloudflared
+
+package include
+
+import (
+	"github.com/sagernet/sing-box/adapter/inbound"
+	"github.com/sagernet/sing-box/protocol/cloudflare"
+)
+
+func registerCloudflaredInbound(registry *inbound.Registry) {
+	cloudflare.RegisterInbound(registry)
+}

include/cloudflared_stub.go

@@ -0,0 +1,20 @@
+//go:build !with_cloudflared
+
+package include
+
+import (
+	"context"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/adapter/inbound"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func registerCloudflaredInbound(registry *inbound.Registry) {
+	inbound.Register[option.CloudflaredInboundOptions](registry, C.TypeCloudflared, func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.CloudflaredInboundOptions) (adapter.Inbound, error) {
+		return nil, E.New(`Cloudflared is not included in this build, rebuild with -tags with_cloudflared`)
+	})
+}

include/registry.go

@@ -64,6 +64,7 @@ func InboundRegistry() *inbound.Registry {
 	anytls.RegisterInbound(registry)
 
 	registerQUICInbounds(registry)
+	registerCloudflaredInbound(registry)
 	registerStubForRemovedInbounds(registry)
 
 	return registry