frp/pkg/plugin/client/socks5.go

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// Copyright 2017 fatedier, fatedier@gmail.com
//
// 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 plugin
import (
"io"
"log"
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"net"
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gosocks5 "github.com/armon/go-socks5"
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v1 "github.com/fatedier/frp/pkg/config/v1"
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utilnet "github.com/fatedier/frp/pkg/util/net"
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)
func init() {
Register(v1.PluginSocks5, NewSocks5Plugin)
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}
type Socks5Plugin struct {
Server *gosocks5.Server
}
func NewSocks5Plugin(options v1.ClientPluginOptions) (p Plugin, err error) {
opts := options.(*v1.Socks5PluginOptions)
cfg := &gosocks5.Config{
Logger: log.New(io.Discard, "", log.LstdFlags),
}
if opts.Username != "" || opts.Password != "" {
cfg.Credentials = gosocks5.StaticCredentials(map[string]string{opts.Username: opts.Password})
}
sp := &Socks5Plugin{}
sp.Server, err = gosocks5.New(cfg)
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p = sp
return
}
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func (sp *Socks5Plugin) Handle(conn io.ReadWriteCloser, realConn net.Conn, _ *ExtraInfo) {
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defer conn.Close()
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wrapConn := utilnet.WrapReadWriteCloserToConn(conn, realConn)
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_ = sp.Server.ServeConn(wrapConn)
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}
func (sp *Socks5Plugin) Name() string {
return v1.PluginSocks5
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}
func (sp *Socks5Plugin) Close() error {
return nil
}