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Curiouser
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statik
openvpn-manager
.idea
.DS_Store
.vscode

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# OpenVPN Manager
# 一、简介
OpenVPN Manager一个简单的OpenVPN Web管理工具。通过OpenVPN的管理端口获取数据然后在Web页面上展示或者操作。
OpenVPN的管理端口详细介绍文章请参考https://openvpn.net/community-resources/management-interface/
# 二、功能
- 显示当前登录的客户端信息
- 可下线用户
- 简单的用户名密码认证
![](assets/openvpn-manager-1.png)
# 三、安装部署
## 1、部署所需条件
- **OpenVPN 服务端需要开起管理端口**
在OpenVPN服务端配置文件中追加`management 127.0.0.1 123456`然后重启OpenVPN即可。
- 支持的OpenVPN 版本
2.4.x2.4.4已测试)
## 2、源码编译部署
> 注意编译安装时需要第三方命令行工具statikstatik可以将静态资源文件打包进二进制文件中
```bash
git clone
cd openvpn-manager
go get github.com/rakyll/statik
go install github.com/rakyll/statik
statik -src=$PWD/public
CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o openvpn-manager main.go
nohup ./openvpn-manager -host openvpn服务端主机IP地址 -port openvpn管理端口 -admin-passwd OpenVPN Manager管理员admin的密码 >> /var/log/openvpn-manager.log 2>&1 &
```
# 四、TODO
新增功能
- [ ] 增加显示最近五条登录日志
- [ ] 增加新增用户的功能
- [ ] 增加对低版本OpenVPN的支持
- [ ] 增加Docker部署方式及二进制包下载集成

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module curiouser.com/openvpn-manager
go 1.14
require (
github.com/gin-gonic/gin v1.6.3
github.com/gobuffalo/packr v1.30.1 // indirect
github.com/kr/pretty v0.2.1 // indirect
github.com/rakyll/statik v0.1.7
github.com/sirupsen/logrus v1.7.0
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
)

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github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
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gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

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main.go Normal file
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//go:generate statik -src=./public
package main
import (
_ "curiouser.com/openvpn-manager/statik"
"encoding/json"
"flag"
"fmt"
"github.com/gin-gonic/gin"
"github.com/rakyll/statik/fs"
"log"
"net"
"net/http"
"os"
"regexp"
"strings"
)
type ClientConInfo struct {
Username string `json:"username"`
IP string `json:"ip"`
Port string `json:"port"`
VIP string `json:"v_ip"`
ReceivedBytes string `json:"received_bytes"`
SentBytes string `json:"sent_bytes"`
ConnectedSinceTimestamp string `json:"connected_since_timestamp"`
ClientId string `json:"client_id"`
PeerId string `json:"peer_id"`
}
type OnlineClients struct {
Onlineclients []ClientConInfo `json:"onlineclient"`
}
var (
ip_reg = regexp.MustCompile(`(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}`)
port_reg = regexp.MustCompile(`\((.*?)\)`)
omhost string
omport string
ompasswd string
omadminpassw string
router *gin.Engine
authorizedRoute *gin.RouterGroup
)
func init() {
flag.StringVar(&omhost, "host", "", "OpenVPN服务端地址")
flag.StringVar(&omport, "port", "", "OpenVPN服务端管理端口默认为空")
flag.StringVar(&ompasswd, "passwd", "", "OpenVPN服务端管理端口密码")
flag.StringVar(&omadminpassw,"admin-passwd","","OpenVPN Manager管理员admin的密码")
flag.Parse()
gin.SetMode(gin.ReleaseMode)
gin.ForceConsoleColor()
router = gin.Default()
authorizedRoute = router.Group("/", gin.BasicAuth(gin.Accounts{
"admin": omadminpassw,
}))
}
func main() {
if omhost == "" && omport == "" && omadminpassw == ""{
fmt.Println("没有设置OpenVPN服务端的主机IP地址、管理端口及管理员密码请在启动命令后添加'-host''-port''-admin-passwd'参数设置")
os.Exit(0)
} else if omhost == "" {
fmt.Println("OpenVPN服务端主机IP地址没有设置无法启动。请在启动命令后添加'-host'参数设置IP地址")
os.Exit(0)
} else if omport == "" {
fmt.Println("OpenVPN管理端口没有设置无法启动。请在启动命令后添加'-port'参数设置管理端口号")
os.Exit(0)
}else if omadminpassw == "" {
fmt.Println("OpenVPN Manager管理员admin用户的密码没有设置无法启动。请在启动命令后添加'-admin-passwd'参数进行设置")
os.Exit(0)
}
statikFS, err := fs.New()
if err != nil {
log.Fatal(err)
}
//根路由设置首页跳转到'/public'加载'index.html'
router.GET("/", func(context *gin.Context) {
context.Request.URL.Path = "/public"
router.HandleContext(context)
})
authorizedRoute.StaticFS("/public", statikFS)
authorizedRoute.StaticFile("/favicon.ico", "./public/favicon.ico")
authorizedRoute.GET("/getOnlineClients", func(context *gin.Context) {
res := sendDataToSocket(omhost+":"+omport, "status")
origin_status := strings.Split(string(res[0:len(res)]), "\r\n")
var client *ClientConInfo
var oc OnlineClients
for _, s := range origin_status {
if find := strings.HasPrefix(s, "CLIENT_LIST"); find {
var b = strings.Split(s, ",")
client = &ClientConInfo{
Username: b[1],
//IP: ip_reg.FindAllString(b[2], -1)[0],
//Port: port_reg.FindAllString(b[2], -1)[0],
IP: strings.Split(b[2], ":")[0],
Port: strings.Split(b[2], ":")[1],
VIP: b[3],
ReceivedBytes: b[5],
SentBytes: b[6],
ConnectedSinceTimestamp: b[8],
ClientId: b[10],
PeerId: b[11],
}
oc.Onlineclients = append(oc.Onlineclients, *client)
}
}
jsons, _ := json.Marshal(oc)
context.JSON(http.StatusOK, string(jsons))
})
authorizedRoute.POST("/kickOutClientByCN", func(context *gin.Context) {
username := context.PostForm("username")
_ = sendDataToSocket(omhost+":"+omport, "kill "+username)
})
fmt.Println("OpenVPN Manager监听端口9090访问地址http://127.0.0.1:9090")
router.Run(":9090")
}
func sendDataToSocket(conf string, msg string) (resData []byte) {
conn, err := net.Dial("tcp", conf)
if err != nil {
log.Fatalf("连接失败")
}
buf1 := make([]byte, 2048)
buf := make([]byte, 2048)
conn.Read(buf)
writeMsg := msg + "\n"
_, err = conn.Write([]byte(writeMsg))
if err != nil {
fmt.Printf("发送数据失败, %s\n", err)
}
_, err = conn.Read(buf1)
if err != nil {
fmt.Printf("读取数据失败, %s\n", err)
}
conn.Close()
return buf1
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>OpenVPN Manager</title>
</head>
<body>
<script type="text/javascript">
let reg = /\\/g;
function getBytesSize(size) {//把字节转换成正常文件大小
if (!size) return "";
var num = 1024.00; //byte
if (size < num)
return size + "B";
if (size < Math.pow(num, 2))
return (size / num).toFixed(2) + "KB"; //kb
if (size < Math.pow(num, 3))
return (size / Math.pow(num, 2)).toFixed(2) + "MB"; //M
if (size < Math.pow(num, 4))
return (size / Math.pow(num, 3)).toFixed(2) + "G"; //G
return (size / Math.pow(num, 4)).toFixed(2) + "T"; //T
}
function formatDuring(mss){
var days = parseInt(mss / ( 60 * 60 * 24));
var hours = parseInt((mss % ( 60 * 60 * 24)) / ( 60 * 60));
var minutes = parseInt((mss % ( 60 * 60)) / 60);
var seconds = (mss % 60) ;
return days + " 天 " + hours + " 小时 " + minutes + " 分钟 ";
}
function getOnlineClients() {
var ajaxObj = new XMLHttpRequest();
ajaxObj.open('get', '/getOnlineClients');
ajaxObj.send();
ajaxObj.onreadystatechange = function () {
if (ajaxObj.readyState == 4 && ajaxObj.status == 200) {
var originData = ajaxObj.responseText.replace(reg,'').substr(1)
var originJsonData = originData.substring(0,originData.length - 1)
var myObj = JSON.parse(originJsonData);
var txt = "";
for (let x=0;x < myObj.onlineclient.length;x++){
var nowTs=parseInt(new Date().getTime()/1000)
txt += "<tr>"
+ "<td>" + x + "</td>"
+ "<td>" + myObj.onlineclient[x].username + "</td>"
+ "<td>" + myObj.onlineclient[x].ip + "</td>"
+ "<td>" + myObj.onlineclient[x].port + "</td>"
+ "<td>" + myObj.onlineclient[x].v_ip + "</td>"
+ "<td>" + getBytesSize(myObj.onlineclient[x].received_bytes) + "</td>"
+ "<td>" + getBytesSize(myObj.onlineclient[x].sent_bytes) + "</td>"
+ "<td>" + formatDuring(nowTs - myObj.onlineclient[x].connected_since_timestamp) + "</td>"
+ "<td >" + "<button class='kickOutBtn' client_username='"+myObj.onlineclient[x].username+"' style='cursor: pointer' type='button'>下线该用户</button>" + "</td>"
+ "</tr>";
}
document.querySelector("#onlineClientsTable").insertAdjacentHTML('afterBegin',txt)
}
}
}
function kickOutClientByCN(userName) {
var ajaxObj = new XMLHttpRequest();
var formData = new FormData();
// console.log(formData);
formData.append("username", userName);
ajaxObj.open('post', "/kickOutClientByCN",false,);
ajaxObj.send(formData);
};
window.onload=function() {
getOnlineClients();
document.getElementById("onlineClientsTable").addEventListener('click', function (e) {
if(e.target.className === 'kickOutBtn') {
kickOutClientByCN(e.target.getAttribute('client_username'));
}
})
}
</script>
<h1 align="center">OpenVPN在线用户列表</h1>
<table width="1300" height="100" border="2" cellpadding="15" cellspacing="0" align="center" >
<tr> <th>ID</th> <th>用户名</th> <th>客户端路由公网IP地址</th> <th>端口</th> <th>虚拟IP地址</th> <th>接收数据大小</th> <th>发送数据大小</th> <th>连接时间</th> <th>是否下线用户</th> </tr>
<tbody id="onlineClientsTable"> </tbody>
</table>
</body>
</html>