Add snell protocol

2026-07-03 21:33:34 +08:00
parent 19bdedec29
commit 5af56d2cfd
16 changed files with 927 additions and 3 deletions
@@ -0,0 +1,118 @@
+package option
+
+import (
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/json"
+	"github.com/sagernet/sing/common/json/badjson"
+)
+
+type _SnellInboundOptions struct {
+	ListenOptions
+	Version     int                    `json:"version"`
+	PSK         string                 `json:"psk"`
+	Users       []SnellUser            `json:"users,omitempty"`
+	ObfsOptions SnellObfsServerOptions `json:"-"`
+	V6Options   SnellV6Options         `json:"-"`
+}
+
+type SnellInboundOptions _SnellInboundOptions
+
+func (o *SnellInboundOptions) UnmarshalJSON(content []byte) error {
+	err := json.Unmarshal(content, (*_SnellInboundOptions)(o))
+	if err != nil {
+		return err
+	}
+	var versionOptions any
+	switch o.Version {
+	case 5:
+		versionOptions = &o.ObfsOptions
+	case 6:
+		versionOptions = &o.V6Options
+	case 0:
+		return E.New("snell: missing version")
+	default:
+		return E.New("snell: unsupported version: ", o.Version)
+	}
+	return badjson.UnmarshallExcluded(content, (*_SnellInboundOptions)(o), versionOptions)
+}
+
+func (o SnellInboundOptions) MarshalJSON() ([]byte, error) {
+	var versionOptions any
+	switch o.Version {
+	case 5:
+		versionOptions = o.ObfsOptions
+	case 6:
+		versionOptions = o.V6Options
+	case 0:
+		return nil, E.New("snell: missing version")
+	default:
+		return nil, E.New("snell: unsupported version: ", o.Version)
+	}
+	return badjson.MarshallObjects((_SnellInboundOptions)(o), versionOptions)
+}
+
+type _SnellOutboundOptions struct {
+	DialerOptions
+	ServerOptions
+	Version     int                    `json:"version"`
+	PSK         string                 `json:"psk"`
+	UserKey     string                 `json:"userkey,omitempty"`
+	Reuse       bool                   `json:"reuse,omitempty"`
+	Network     NetworkList            `json:"network,omitempty"`
+	ObfsOptions SnellObfsClientOptions `json:"-"`
+	V6Options   SnellV6Options         `json:"-"`
+}
+
+type SnellOutboundOptions _SnellOutboundOptions
+
+func (o *SnellOutboundOptions) UnmarshalJSON(content []byte) error {
+	err := json.Unmarshal(content, (*_SnellOutboundOptions)(o))
+	if err != nil {
+		return err
+	}
+	var versionOptions any
+	switch o.Version {
+	case 4:
+		versionOptions = &o.ObfsOptions
+	case 6:
+		versionOptions = &o.V6Options
+	case 0:
+		return E.New("snell: missing version")
+	default:
+		return E.New("snell: unsupported version: ", o.Version)
+	}
+	return badjson.UnmarshallExcluded(content, (*_SnellOutboundOptions)(o), versionOptions)
+}
+
+func (o SnellOutboundOptions) MarshalJSON() ([]byte, error) {
+	var versionOptions any
+	switch o.Version {
+	case 4:
+		versionOptions = o.ObfsOptions
+	case 6:
+		versionOptions = o.V6Options
+	case 0:
+		return nil, E.New("snell: missing version")
+	default:
+		return nil, E.New("snell: unsupported version: ", o.Version)
+	}
+	return badjson.MarshallObjects((_SnellOutboundOptions)(o), versionOptions)
+}
+
+type SnellObfsServerOptions struct {
+	ObfsMode string `json:"obfs_mode,omitempty"`
+}
+
+type SnellUser struct {
+	Name    string `json:"name,omitempty"`
+	UserKey string `json:"userkey"`
+}
+
+type SnellObfsClientOptions struct {
+	ObfsMode string `json:"obfs_mode,omitempty"`
+	ObfsHost string `json:"obfs_host,omitempty"`
+}
+
+type SnellV6Options struct {
+	Mode string `json:"mode,omitempty"`
+}