Add USB/IP service

option/usbip.go

@@ -0,0 +1,69 @@
+package option
+
+import (
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/json"
+	"github.com/sagernet/sing/common/json/badjson"
+)
+
+const (
+	USBIPProviderDefault = "default"
+	USBIPProviderDynamic = "dynamic"
+)
+
+type _USBIPServerServiceOptions struct {
+	ListenOptions
+	Provider string `json:"provider,omitempty"`
+	Options  any    `json:"-"`
+}
+
+type USBIPServerServiceOptions _USBIPServerServiceOptions
+
+func (o USBIPServerServiceOptions) MarshalJSON() ([]byte, error) {
+	if o.Options == nil {
+		return json.Marshal((_USBIPServerServiceOptions)(o))
+	}
+	return badjson.MarshallObjects((_USBIPServerServiceOptions)(o), o.Options)
+}
+
+func (o *USBIPServerServiceOptions) UnmarshalJSON(content []byte) error {
+	err := json.Unmarshal(content, (*_USBIPServerServiceOptions)(o))
+	if err != nil {
+		return err
+	}
+	var options any
+	switch o.Provider {
+	case "", USBIPProviderDefault:
+		o.Provider = USBIPProviderDefault
+		options = new(USBIPDefaultProviderOptions)
+	case USBIPProviderDynamic:
+		options = new(USBIPDynamicProviderOptions)
+	default:
+		return E.New("unknown usbip provider type: ", o.Provider)
+	}
+	err = badjson.UnmarshallExcluded(content, (*_USBIPServerServiceOptions)(o), options)
+	if err != nil {
+		return err
+	}
+	o.Options = options
+	return nil
+}
+
+type USBIPClientServiceOptions struct {
+	DialerOptions
+	Server  string             `json:"server,omitempty"`
+	Devices []USBIPDeviceMatch `json:"devices,omitempty"`
+}
+
+type USBIPDeviceMatch struct {
+	BusID     string `json:"bus_id,omitempty"`
+	VendorID  uint16 `json:"vendor_id,omitempty"`
+	ProductID uint16 `json:"product_id,omitempty"`
+	Serial    string `json:"serial,omitempty"`
+}
+
+type USBIPDefaultProviderOptions struct {
+	Devices []USBIPDeviceMatch `json:"devices,omitempty"`
+}
+
+type USBIPDynamicProviderOptions struct{}