Inbound rule support

option/outbound.go

@@ -0,0 +1,99 @@
+package option
+
+import (
+	"encoding/json"
+
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+)
+
+var ErrUnknownOutboundType = E.New("unknown outbound type")
+
+type _Outbound struct {
+	Tag                string                      `json:"tag,omitempty"`
+	Type               string                      `json:"type,omitempty"`
+	DirectOptions      *DirectOutboundOptions      `json:"directOptions,omitempty"`
+	ShadowsocksOptions *ShadowsocksOutboundOptions `json:"shadowsocksOptions,omitempty"`
+}
+
+type Outbound _Outbound
+
+func (i *Outbound) MarshalJSON() ([]byte, error) {
+	var options []byte
+	var err error
+	switch i.Type {
+	case "direct":
+		options, err = json.Marshal(i.DirectOptions)
+	case "shadowsocks":
+		options, err = json.Marshal(i.ShadowsocksOptions)
+	default:
+		return nil, E.Extend(ErrUnknownOutboundType, i.Type)
+	}
+	if err != nil {
+		return nil, err
+	}
+	var content map[string]any
+	err = json.Unmarshal(options, &content)
+	if err != nil {
+		return nil, err
+	}
+	content["tag"] = i.Tag
+	content["type"] = i.Type
+	return json.Marshal(content)
+}
+
+func (i *Outbound) UnmarshalJSON(bytes []byte) error {
+	if err := json.Unmarshal(bytes, (*_Outbound)(i)); err != nil {
+		return err
+	}
+	switch i.Type {
+	case "direct":
+		if i.DirectOptions != nil {
+			break
+		}
+		if err := json.Unmarshal(bytes, &i.DirectOptions); err != nil {
+			return err
+		}
+	case "shadowsocks":
+		if i.ShadowsocksOptions != nil {
+			break
+		}
+		if err := json.Unmarshal(bytes, &i.ShadowsocksOptions); err != nil {
+			return err
+		}
+	default:
+		return E.Extend(ErrUnknownOutboundType, i.Type)
+	}
+	return nil
+}
+
+type DialerOptions struct {
+	Detour         string `json:"detour,omitempty"`
+	BindInterface  string `json:"bind_interface,omitempty"`
+	RoutingMark    int    `json:"routing_mark,omitempty"`
+	ReuseAddr      bool   `json:"reuse_addr,omitempty"`
+	ConnectTimeout int    `json:"connect_timeout,omitempty"`
+	TCPFastOpen    bool   `json:"tcp_fast_open,omitempty"`
+}
+
+type DirectOutboundOptions struct {
+	DialerOptions
+	OverrideAddress string `json:"override_address,omitempty"`
+	OverridePort    uint16 `json:"override_port,omitempty"`
+}
+
+type ServerOptions struct {
+	Server     string `json:"server"`
+	ServerPort uint16 `json:"server_port"`
+}
+
+func (o ServerOptions) Build() M.Socksaddr {
+	return M.ParseSocksaddrHostPort(o.Server, o.ServerPort)
+}
+
+type ShadowsocksOutboundOptions struct {
+	DialerOptions
+	ServerOptions
+	Method   string `json:"method"`
+	Password string `json:"password"`
+}