support yaml/json/toml configuration format, make ini deprecated (#3599)

pkg/config/v1/plugin.go

@@ -0,0 +1,117 @@
+// 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 (
+	"encoding/json"
+	"errors"
+	"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 errors.New("type is required")
+	}
+
+	typeStruct := struct {
+		Type string `json:"type"`
+	}{}
+	if err := json.Unmarshal(b, &typeStruct); err != nil {
+		return err
+	}
+
+	c.Type = typeStruct.Type
+
+	v, ok := clientPluginOptionsTypeMap[typeStruct.Type]
+	if !ok {
+		return fmt.Errorf("unknown plugin type: %s", typeStruct.Type)
+	}
+	if err := json.Unmarshal(b, v); err != nil {
+		return err
+	}
+	c.ClientPluginOptions = v
+	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 {
+	LocalAddr         string           `json:"localAddr,omitempty"`
+	HostHeaderRewrite string           `json:"hostHeaderRewrite,omitempty"`
+	RequestHeaders    HeaderOperations `json:"requestHeaders,omitempty"`
+}
+
+type HTTPProxyPluginOptions struct {
+	HTTPUser     string `json:"httpUser,omitempty"`
+	HTTPPassword string `json:"httpPassword,omitempty"`
+}
+
+type HTTPS2HTTPPluginOptions struct {
+	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 {
+	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 {
+	Username string `json:"username,omitempty"`
+	Password string `json:"password,omitempty"`
+}
+
+type StaticFilePluginOptions struct {
+	LocalPath    string `json:"localPath,omitempty"`
+	StripPrefix  string `json:"stripPrefix,omitempty"`
+	HTTPUser     string `json:"httpUser,omitempty"`
+	HTTPPassword string `json:"httpPassword,omitempty"`
+}
+
+type UnixDomainSocketPluginOptions struct {
+	UnixPath string `json:"unixPath,omitempty"`
+}