frp/pkg/config/v1/visitor_plugin.go
2025-04-09 02:07:29 +08:00

87 lines
2.1 KiB
Go

// Copyright 2025 The frp Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"reflect"
)
const (
VisitorPluginVirtualNet = "virtual_net"
)
var visitorPluginOptionsTypeMap = map[string]reflect.Type{
VisitorPluginVirtualNet: reflect.TypeOf(VirtualNetVisitorPluginOptions{}),
}
type VisitorPluginOptions interface {
Complete()
}
type TypedVisitorPluginOptions struct {
Type string `json:"type"`
VisitorPluginOptions
}
func (c *TypedVisitorPluginOptions) UnmarshalJSON(b []byte) error {
if len(b) == 4 && string(b) == "null" {
return nil
}
typeStruct := struct {
Type string `json:"type"`
}{}
if err := json.Unmarshal(b, &typeStruct); err != nil {
return err
}
c.Type = typeStruct.Type
if c.Type == "" {
return errors.New("visitor plugin type is empty")
}
v, ok := visitorPluginOptionsTypeMap[typeStruct.Type]
if !ok {
return fmt.Errorf("unknown visitor plugin type: %s", typeStruct.Type)
}
options := reflect.New(v).Interface().(VisitorPluginOptions)
decoder := json.NewDecoder(bytes.NewBuffer(b))
if DisallowUnknownFields {
decoder.DisallowUnknownFields()
}
if err := decoder.Decode(options); err != nil {
return fmt.Errorf("unmarshal VisitorPluginOptions error: %v", err)
}
c.VisitorPluginOptions = options
return nil
}
func (c *TypedVisitorPluginOptions) MarshalJSON() ([]byte, error) {
return json.Marshal(c.VisitorPluginOptions)
}
type VirtualNetVisitorPluginOptions struct {
Type string `json:"type"`
DestinationIP string `json:"destinationIP"`
}
func (o *VirtualNetVisitorPluginOptions) Complete() {}