frp/pkg/config/v1/plugin.go

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// Copyright 2023 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"
"fmt"
"reflect"
)
type ClientPluginOptions interface{}
type TypedClientPluginOptions struct {
Type string `json:"type"`
ClientPluginOptions
}
func (c *TypedClientPluginOptions) 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 nil
}
v, ok := clientPluginOptionsTypeMap[typeStruct.Type]
if !ok {
return fmt.Errorf("unknown plugin type: %s", typeStruct.Type)
}
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options := reflect.New(v).Interface().(ClientPluginOptions)
decoder := json.NewDecoder(bytes.NewBuffer(b))
if DisallowUnknownFields {
decoder.DisallowUnknownFields()
}
if err := decoder.Decode(options); err != nil {
return err
}
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c.ClientPluginOptions = options
return nil
}
const (
PluginHTTP2HTTPS = "http2https"
PluginHTTPProxy = "http_proxy"
PluginHTTPS2HTTP = "https2http"
PluginHTTPS2HTTPS = "https2https"
PluginSocks5 = "socks5"
PluginStaticFile = "static_file"
PluginUnixDomainSocket = "unix_domain_socket"
)
var clientPluginOptionsTypeMap = map[string]reflect.Type{
PluginHTTP2HTTPS: reflect.TypeOf(HTTP2HTTPSPluginOptions{}),
PluginHTTPProxy: reflect.TypeOf(HTTPProxyPluginOptions{}),
PluginHTTPS2HTTP: reflect.TypeOf(HTTPS2HTTPPluginOptions{}),
PluginHTTPS2HTTPS: reflect.TypeOf(HTTPS2HTTPSPluginOptions{}),
PluginSocks5: reflect.TypeOf(Socks5PluginOptions{}),
PluginStaticFile: reflect.TypeOf(StaticFilePluginOptions{}),
PluginUnixDomainSocket: reflect.TypeOf(UnixDomainSocketPluginOptions{}),
}
type HTTP2HTTPSPluginOptions struct {
Type string `json:"type,omitempty"`
LocalAddr string `json:"localAddr,omitempty"`
HostHeaderRewrite string `json:"hostHeaderRewrite,omitempty"`
RequestHeaders HeaderOperations `json:"requestHeaders,omitempty"`
}
type HTTPProxyPluginOptions struct {
Type string `json:"type,omitempty"`
HTTPUser string `json:"httpUser,omitempty"`
HTTPPassword string `json:"httpPassword,omitempty"`
}
type HTTPS2HTTPPluginOptions struct {
Type string `json:"type,omitempty"`
LocalAddr string `json:"localAddr,omitempty"`
HostHeaderRewrite string `json:"hostHeaderRewrite,omitempty"`
RequestHeaders HeaderOperations `json:"requestHeaders,omitempty"`
CrtPath string `json:"crtPath,omitempty"`
KeyPath string `json:"keyPath,omitempty"`
}
type HTTPS2HTTPSPluginOptions struct {
Type string `json:"type,omitempty"`
LocalAddr string `json:"localAddr,omitempty"`
HostHeaderRewrite string `json:"hostHeaderRewrite,omitempty"`
RequestHeaders HeaderOperations `json:"requestHeaders,omitempty"`
CrtPath string `json:"crtPath,omitempty"`
KeyPath string `json:"keyPath,omitempty"`
}
type Socks5PluginOptions struct {
Type string `json:"type,omitempty"`
Username string `json:"username,omitempty"`
Password string `json:"password,omitempty"`
}
type StaticFilePluginOptions struct {
Type string `json:"type,omitempty"`
LocalPath string `json:"localPath,omitempty"`
StripPrefix string `json:"stripPrefix,omitempty"`
HTTPUser string `json:"httpUser,omitempty"`
HTTPPassword string `json:"httpPassword,omitempty"`
}
type UnixDomainSocketPluginOptions struct {
Type string `json:"type,omitempty"`
UnixPath string `json:"unixPath,omitempty"`
}