logo, send email

.env

@@ -1,6 +1,12 @@
 SERVER=0.0.0.0
 PORT=8080
-GIN_MODE=debug
+GIN_MODE=release
 
 WG_CONF_DIR=./wireguard
 WG_INTERFACE_NAME=wg0.conf
+
+SMTP_HOST=smtp.gmail.com
+SMTP_PORT=587
+SMTP_USERNAME=account@gmail.com
+SMTP_PASSWORD="*************"
+SMTP_FROM="Wg Gen Web <account@gmail.com>"

README.md

@@ -1,8 +1,8 @@
 # Wg Gen Web
 
-Simple Web based configuration generator for [WireGuard](https://wireguard.com).
+<h1 align="center"><img height="420" src="./wg-gen-web_cover.png" alt="Simple Web based configuration generator for WireGuard"></h1>
 
----
+Simple Web based configuration generator for [WireGuard](https://wireguard.com).
 
 [![pipeline status](https://gitlab.127-0-0-1.fr/vx3r/wg-gen-web/badges/master/pipeline.svg)](https://gitlab.127-0-0-1.fr/vx3r/wg-gen-web/commits/master)
 [![Go Report Card](https://goreportcard.com/badge/github.com/vx3r/wg-gen-web)](https://goreportcard.com/report/github.com/vx3r/wg-gen-web)
@@ -30,10 +30,12 @@ The goal is to run Wg Gen Web in a container and WireGuard on host system.
  * Generation of `wg0.conf` after any modification
  * Dockerized
  * Pretty cool look
-![Screenshot](Wg-Gen-Web.png)
+![Screenshot](wg-gen-web_screenshot.png)
 
 ## Running
 
+### Docker
+
 The easiest way to run Wg Gen Web is using the container image
 ```
 docker run --rm -it -v /tmp/wireguard:/data -p 8080:8080 -e "WG_CONF_DIR=/data" vx3r/wg-gen-web:latest
@@ -51,6 +53,11 @@ services:
     environment:
       - WG_CONF_DIR=/data
       - WG_INTERFACE_NAME=wg0.conf
+      - SMTP_HOST=smtp.gmail.com
+      - SMTP_PORT=587
+      - SMTP_USERNAME=account@gmail.com
+      - SMTP_PASSWORD="*************"
+      - SMTP_FROM="Wg Gen Web <account@gmail.com>"
     volumes:
       - /etc/wireguard:/data
 ```
@@ -58,7 +65,18 @@ Please note that mapping ```/etc/wireguard``` to ```/data``` inside the docker,
 If needed, please make sure to backup your files from ```/etc/wireguard```.
 
 A workaround would be to change the ```WG_INTERFACE_NAME``` to something different, as it will create a new interface (```wg-auto.conf``` for example), note that if you do so, you will have to adapt your daemon accordingly.
-### Automatically apply changes using ```systemd```
+
+### Directly without docker
+
+Fill free to download latest artefacts from my GitLab server:
+* [Backend](https://gitlab.127-0-0-1.fr/vx3r/wg-gen-web/-/jobs/artifacts/master/download?job=build-front)
+* [Frontend](https://gitlab.127-0-0-1.fr/vx3r/wg-gen-web/-/jobs/artifacts/master/download?job=build-back)
+
+Put everything in one directory, create `.env` file with all configurations and run the backend.
+
+## Automatically apply changes to WireGuard
+
+### Using ```systemd```
 Using `systemd.path` monitor for directory changes see [systemd doc](https://www.freedesktop.org/software/systemd/man/systemd.path.html)
 ```
 # /etc/systemd/system/wg-gen-web.path
@@ -87,7 +105,7 @@ WantedBy=multi-user.target
 ```
 Which will restart WireGuard service 
 
-### Automatically apply changes using ```inotifywait```
+### Using ```inotifywait```
 For any other init system, create a daemon running this script
 ```
 #!/bin/sh
@@ -111,7 +129,7 @@ Feel free to modify this file in order to use your existing keys
 ## TODO
 
  * Multi-user support behind [Authelia](https://github.com/authelia/authelia) (suggestions / thoughts are welcome)
- * Send configs by email to client
+ * ~~Send configs by email to client~~
 
 ## License
 

api/api.go

@@ -20,6 +20,7 @@ func ApplyRoutes(r *gin.Engine) {
 		client.DELETE("/:id", deleteClient)
 		client.GET("", readClients)
 		client.GET("/:id/config", configClient)
+		client.GET("/:id/email", emailClient)
 	}
 
 	server := r.Group("/api/v1.0/server")
@@ -149,6 +150,21 @@ func configClient(c *gin.Context) {
 	return
 }
 
+func emailClient(c *gin.Context) {
+	id := c.Param("id")
+
+	err := repository.EmailClient(id)
+	if err != nil {
+		log.WithFields(log.Fields{
+			"err": err,
+		}).Error("failed to send email to client")
+		c.AbortWithStatus(http.StatusInternalServerError)
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{})
+}
+
 func readServer(c *gin.Context) {
 	client, err := repository.ReadServer()
 	if err != nil {

go.mod

@@ -12,4 +12,6 @@ require (
 	github.com/sirupsen/logrus v1.4.2
 	github.com/skip2/go-qrcode v0.0.0-20191027152451-9434209cb086
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20200114203027-fcfc50b29cbb
+	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
+	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
 )

go.sum

@@ -98,11 +98,15 @@ golang.zx2c4.com/wireguard v0.0.20191012/go.mod h1:P2HsVp8SKwZEufsnezXZA4GRX/T49
 golang.zx2c4.com/wireguard v0.0.20200121 h1:vcswa5Q6f+sylDfjqyrVNNrjsFUUbPsgAQTBCAg/Qf8=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20200114203027-fcfc50b29cbb h1:EZFZIHfDUPApqlA2wgF5LBAXKIKAxNckrehUTPYYAHc=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20200114203027-fcfc50b29cbb/go.mod h1:vpFXH8L2bfaEJ/8I7DZ0CVOHsVydo6KeW9Iqh3qMa4g=
+gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc h1:2gGKlE2+asNV9m7xrywl36YYNnBG5ZQ0r/BOOxqPpmk=
+gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc/go.mod h1:m7x9LTH6d71AHyAX77c9yqWCCa3UKHcVEj9y7hAtKDk=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
 gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y=
 gopkg.in/go-playground/validator.v9 v9.29.1 h1:SvGtYmN60a5CVKTOzMSyfzWDeZRxRuGvRQyEAKbw1xc=
 gopkg.in/go-playground/validator.v9 v9.29.1/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
+gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df h1:n7WqCuqOuCbNr617RXOY0AWRXxgwEyPp2z+p0+hgMuE=
+gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df/go.mod h1:LRQQ+SO6ZHR7tOkpBDuZnXENFzX8qRjMDMyPD6BRkCw=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

main.go

@@ -40,7 +40,10 @@ func main() {
 		}
 	}
 
-	if os.Getenv("GIN_MODE") == "release" {
+	if os.Getenv("GIN_MODE") == "debug" {
+		// set gin release mode
+		gin.SetMode(gin.DebugMode)
+	} else {
 		// set gin release mode
 		gin.SetMode(gin.ReleaseMode)
 		// disable console color

repository/repository.go

@@ -5,13 +5,16 @@ import (
 	"errors"
 	uuid "github.com/satori/go.uuid"
 	log "github.com/sirupsen/logrus"
+	"github.com/skip2/go-qrcode"
 	"gitlab.127-0-0-1.fr/vx3r/wg-gen-web/model"
 	"gitlab.127-0-0-1.fr/vx3r/wg-gen-web/util"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+	"gopkg.in/gomail.v2"
 	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
+	"strconv"
 	"strings"
 	"time"
 )
@@ -157,6 +160,82 @@ func DeleteClient(id string) error {
 	return generateWgConfig()
 }
 
+// SendEmail to client
+func EmailClient(id string) error {
+	client, err := ReadClient(id)
+	if err != nil {
+		return err
+	}
+
+	configData, err := ReadClientConfig(id)
+	if err != nil {
+		return err
+	}
+
+	// conf as .conf file
+	tmpfileCfg, err := ioutil.TempFile("", "wireguard-vpn-*.conf")
+	if err != nil {
+		return err
+	}
+	if _, err := tmpfileCfg.Write(configData); err != nil {
+		return err
+	}
+	if err := tmpfileCfg.Close(); err != nil {
+		return err
+	}
+	defer os.Remove(tmpfileCfg.Name()) // clean up
+
+	// conf as png image
+	png, err := qrcode.Encode(string(configData), qrcode.Medium, 280)
+	if err != nil {
+		return err
+	}
+	tmpfilePng, err := ioutil.TempFile("", "qrcode-*.png")
+	if err != nil {
+		return err
+	}
+	if _, err := tmpfilePng.Write(png); err != nil {
+		return err
+	}
+	if err := tmpfilePng.Close(); err != nil {
+		return err
+	}
+	defer os.Remove(tmpfilePng.Name()) // clean up
+
+	// get email body
+	emailBody, err := util.DumpEmail(client, filepath.Base(tmpfilePng.Name()))
+	if err != nil {
+		return err
+	}
+
+	// port to int
+	port, err := strconv.Atoi(os.Getenv("SMTP_PORT"))
+	if err != nil {
+		return err
+	}
+
+	d := gomail.NewDialer(os.Getenv("SMTP_HOST"), port, os.Getenv("SMTP_USERNAME"), os.Getenv("SMTP_PASSWORD"))
+	s, err := d.Dial()
+	if err != nil {
+		return err
+	}
+	m := gomail.NewMessage()
+
+	m.SetHeader("From", os.Getenv("SMTP_FROM"))
+	m.SetAddressHeader("To", client.Email, client.Name)
+	m.SetHeader("Subject", "WireGuard VPN Configuration")
+	m.SetBody("text/html", emailBody.String())
+	m.Attach(tmpfileCfg.Name())
+	m.Embed(tmpfilePng.Name())
+
+	err = gomail.Send(s, m)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // ReadClients all clients
 func ReadClients() ([]*model.Client, error) {
 	clients := make([]*model.Client, 0)

ui/public/index.html

@@ -4,7 +4,7 @@
     <meta charset="utf-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
-    <link rel="icon" href="<%= BASE_URL %>favicon.ico">
+    <link rel="icon" href="<%= BASE_URL %>favicon.png">
     <title>ui</title>
     <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@mdi/font@latest/css/materialdesignicons.min.css">

ui/src/App.vue

@@ -2,6 +2,7 @@
   <v-app id="inspire">
 
     <v-app-bar app>
+      <img class="mr-3" :src="require('./assets/logo.png')" height="50"/>
       <v-toolbar-title>Wg Gen Web</v-toolbar-title>
     </v-app-bar>
 

ui/src/assets/logo.svg

@@ -1 +0,0 @@
-<svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 87.5 100"><defs><style>.cls-1{fill:#1697f6;}.cls-2{fill:#7bc6ff;}.cls-3{fill:#1867c0;}.cls-4{fill:#aeddff;}</style></defs><title>Artboard 46</title><polyline class="cls-1" points="43.75 0 23.31 0 43.75 48.32"/><polygon class="cls-2" points="43.75 62.5 43.75 100 0 14.58 22.92 14.58 43.75 62.5"/><polyline class="cls-3" points="43.75 0 64.19 0 43.75 48.32"/><polygon class="cls-4" points="64.58 14.58 87.5 14.58 43.75 100 43.75 62.5 64.58 14.58"/></svg>

ui/src/views/Home.vue

@@ -13,15 +13,15 @@
               <v-text-field
                       v-model="server.name"
                       :rules="[
-                          v => !!v || 'Name is required',
+                          v => !!v || 'Friendly name is required',
                         ]"
-                      label="Friendly server name"
+                      label="Friendly name"
                       required
               />
               <v-text-field
                       type="number"
                       v-model="server.persistentKeepalive"
-                      label="Persistent keepalive for clients"
+                      label="Persistent keepalive"
                       :rules="[
                           v => !!v || 'Persistent keepalive is required',
                         ]"
@@ -29,9 +29,9 @@
               />
               <v-text-field
                       v-model="server.endpoint"
-                      label="Endpoint for clients to connect to"
+                      label="Public endpoint for clients to connect to"
                       :rules="[
-                          v => !!v || 'Endpoint is required',
+                          v => !!v || 'Public endpoint for clients to connect to is required',
                         ]"
                       required
               />
@@ -47,12 +47,12 @@
             <v-col cols="6">
               <v-text-field
                       v-model="server.publicKey"
-                      label="Server public key"
+                      label="Public key"
                       disabled
               />
               <v-text-field
                       v-model="server.presharedKey"
-                      label="Preshared Key key"
+                      label="Preshared key"
                       disabled
               />
               <v-text-field
@@ -69,7 +69,7 @@
                       :rules="[
                           v => !!v || 'Listen port is required',
                         ]"
-                      label="Server listen port"
+                      label="Listen port"
                       required
               />
             </v-col>
@@ -78,10 +78,12 @@
           <v-card-actions>
             <v-spacer/>
             <v-btn
+                    class="ma-2"
                     color="warning"
                     @click="updateServer"
             >
               Update server configuration
+              <v-icon right dark>mdi-update</v-icon>
             </v-btn>
           </v-card-actions>
         </v-card>
@@ -100,6 +102,7 @@
                     @click.stop="dialogAddClient = true"
             >
               Add new client
+              <v-icon right dark>mdi-account-multiple-plus-outline</v-icon>
             </v-btn>
           </v-list-item>
           <v-row>
@@ -146,8 +149,8 @@
                           text
                           :href="getUrlToConfig(client.id, false)"
                   >
-                    Download configuration
+                    Download
-                    <v-icon right dark>mdi-cloud-download</v-icon>
+                    <v-icon right dark>mdi-cloud-download-outline</v-icon>
                   </v-btn>
                   <v-btn
                           text
@@ -163,6 +166,13 @@
                     Delete
                     <v-icon right dark>mdi-trash-can-outline</v-icon>
                   </v-btn>
+                  <v-btn
+                          text
+                          @click="sendEmailClient(client.id)"
+                  >
+                    Send email
+                    <v-icon right dark>mdi-email-send-outline</v-icon>
+                  </v-btn>
                   <v-spacer/>
                   <v-tooltip right>
                     <template v-slot:activator="{ on }">
@@ -174,7 +184,7 @@
                               v-on:change="updateClient(client)"
                       />
                     </template>
-                    <span>Enable or disable this client</span>
+                    <span> {{client.enable ? 'Disable' : 'Enable'}} this client</span>
                   </v-tooltip>
 
                 </v-card-actions>
@@ -407,6 +417,14 @@
           });
         }
       },
+      sendEmailClient(id) {
+        this.$get(`/client/${id}/email`).then((res) => {
+          this.notify('success', "Email successfully sent");
+          this.getData()
+        }).catch((e) => {
+          this.notify('error', e.response.status + ' ' + e.response.statusText);
+        });
+      },
       getUrlToConfig(id, qrcode){
         let base = "/api/v1.0";
         if (process.env.NODE_ENV === "development"){

util/tpl.go

@@ -8,6 +8,192 @@ import (
 )
 
 var (
+	emailTpl = `
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office">
+<head>
+    <!--[if gte mso 9]>
+    <xml>
+        <o:OfficeDocumentSettings>
+            <o:AllowPNG/>
+            <o:PixelsPerInch>96</o:PixelsPerInch>
+        </o:OfficeDocumentSettings>
+    </xml>
+    <![endif]-->
+    <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+    <meta name="format-detection" content="date=no" />
+    <meta name="format-detection" content="address=no" />
+    <meta name="format-detection" content="telephone=no" />
+    <meta name="x-apple-disable-message-reformatting" />
+    <!--[if !mso]><!-->
+    <link href="https://fonts.googleapis.com/css?family=Muli:400,400i,700,700i" rel="stylesheet" />
+    <!--<![endif]-->
+    <title>Email Template</title>
+    <!--[if gte mso 9]>
+    <style type="text/css" media="all">
+        sup { font-size: 100% !important; }
+    </style>
+    <![endif]-->
+    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
+
+    <style type="text/css" media="screen">
+        /* Linked Styles */
+        body { padding:0 !important; margin:0 !important; display:block !important; min-width:100% !important; width:100% !important; background:#001736; -webkit-text-size-adjust:none }
+        a { color:#66c7ff; text-decoration:none }
+        p { padding:0 !important; margin:0 !important }
+        img { -ms-interpolation-mode: bicubic; /* Allow smoother rendering of resized image in Internet Explorer */ }
+        .mcnPreviewText { display: none !important; }
+
+
+        /* Mobile styles */
+        @media only screen and (max-device-width: 480px), only screen and (max-width: 480px) {
+            .mobile-shell { width: 100% !important; min-width: 100% !important; }
+            .bg { background-size: 100% auto !important; -webkit-background-size: 100% auto !important; }
+
+            .text-header,
+            .m-center { text-align: center !important; }
+
+            .center { margin: 0 auto !important; }
+            .container { padding: 20px 10px !important }
+
+            .td { width: 100% !important; min-width: 100% !important; }
+
+            .m-br-15 { height: 15px !important; }
+            .p30-15 { padding: 30px 15px !important; }
+
+            .m-td,
+            .m-hide { display: none !important; width: 0 !important; height: 0 !important; font-size: 0 !important; line-height: 0 !important; min-height: 0 !important; }
+
+            .m-block { display: block !important; }
+
+            .fluid-img img { width: 100% !important; max-width: 100% !important; height: auto !important; }
+
+            .column,
+            .column-top,
+            .column-empty,
+            .column-empty2,
+            .column-dir-top { float: left !important; width: 100% !important; display: block !important; }
+
+            .column-empty { padding-bottom: 10px !important; }
+            .column-empty2 { padding-bottom: 30px !important; }
+
+            .content-spacing { width: 15px !important; }
+        }
+    </style>
+</head>
+<body class="body" style="padding:0 !important; margin:0 !important; display:block !important; min-width:100% !important; width:100% !important; background:#001736; -webkit-text-size-adjust:none;">
+<table width="100%" border="0" cellspacing="0" cellpadding="0" bgcolor="#001736">
+    <tr>
+        <td align="center" valign="top">
+            <table width="650" border="0" cellspacing="0" cellpadding="0" class="mobile-shell">
+                <tr>
+                    <td class="td container" style="width:650px; min-width:650px; font-size:0pt; line-height:0pt; margin:0; font-weight:normal; padding:55px 0px;">
+
+                        <!-- Article / Image On The Left - Copy On The Right -->
+                        <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                            <tr>
+                                <td style="padding-bottom: 10px;">
+                                    <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                        <tr>
+                                            <td class="tbrr p30-15" style="padding: 60px 30px; border-radius:26px 26px 0px 0px;" bgcolor="#12325c">
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                    <tr>
+                                                        <th class="column-top" width="280" style="font-size:0pt; line-height:0pt; padding:0; margin:0; font-weight:normal; vertical-align:top;">
+                                                            <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                                <tr>
+                                                                    <td class="fluid-img" style="font-size:0pt; line-height:0pt; text-align:left;"><img src="cid:{{.QrcodePngName}}" width="280" height="210" border="0" alt="" /></td>
+                                                                </tr>
+                                                            </table>
+                                                        </th>
+                                                        <th class="column-empty2" width="30" style="font-size:0pt; line-height:0pt; padding:0; margin:0; font-weight:normal; vertical-align:top;"></th>
+                                                        <th class="column-top" width="280" style="font-size:0pt; line-height:0pt; padding:0; margin:0; font-weight:normal; vertical-align:top;">
+                                                            <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                                <tr>
+                                                                    <td class="h4 pb20" style="color:#ffffff; font-family:'Muli', Arial,sans-serif; font-size:20px; line-height:28px; text-align:left; padding-bottom:20px;">Hello</td>
+                                                                </tr>
+                                                                <tr>
+                                                                    <td class="text pb20" style="color:#ffffff; font-family:Arial,sans-serif; font-size:14px; line-height:26px; text-align:left; padding-bottom:20px;">You probably requested VPN configuration. Here is <strong>{{.Client.Name}}</strong> configuration created <strong>{{.Client.Created.Format "Jan 02, 2006 15:04:05 UTC"}}</strong>. Scan the Qrcode or open attached configuration file in VPN client.</td>
+                                                                </tr>
+                                                            </table>
+                                                        </th>
+                                                    </tr>
+                                                </table>
+                                            </td>
+                                        </tr>
+                                    </table>
+                                </td>
+                            </tr>
+                        </table>
+                        <!-- END Article / Image On The Left - Copy On The Right -->
+
+                        <!-- Two Columns / Articles -->
+                        <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                            <tr>
+                                <td style="padding-bottom: 10px;">
+                                    <table width="100%" border="0" cellspacing="0" cellpadding="0" bgcolor="#0e264b">
+                                        <tr>
+                                            <td>
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                    <tr>
+                                                        <td class="p30-15" style="padding: 50px 30px;">
+                                                            <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                                <tr>
+                                                                    <td class="h3 pb20" style="color:#ffffff; font-family:'Muli', Arial,sans-serif; font-size:25px; line-height:32px; text-align:left; padding-bottom:20px;">About WireGuard</td>
+                                                                </tr>
+                                                                <tr>
+                                                                    <td class="text pb20" style="color:#ffffff; font-family:Arial,sans-serif; font-size:14px; line-height:26px; text-align:left; padding-bottom:20px;">WireGuard is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography. It aims to be faster, simpler, leaner, and more useful than IPsec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN.</td>
+                                                                </tr>
+                                                                <!-- Button -->
+                                                                <tr>
+                                                                    <td align="left">
+                                                                        <table border="0" cellspacing="0" cellpadding="0">
+                                                                            <tr>
+                                                                                <td class="blue-button text-button" style="background:#66c7ff; color:#c1cddc; font-family:'Muli', Arial,sans-serif; font-size:14px; line-height:18px; padding:12px 30px; text-align:center; border-radius:0px 22px 22px 22px; font-weight:bold;"><a href="https://www.wireguard.com/install" target="_blank" class="link-white" style="color:#ffffff; text-decoration:none;"><span class="link-white" style="color:#ffffff; text-decoration:none;">Download WireGuard VPN Client</span></a></td>
+                                                                            </tr>
+                                                                        </table>
+                                                                    </td>
+                                                                </tr>
+                                                                <!-- END Button -->
+                                                            </table>
+                                                        </td>
+                                                    </tr>
+                                                </table>
+                                            </td>
+                                        </tr>
+                                    </table>
+                                </td>
+                            </tr>
+                        </table>
+                        <!-- END Two Columns / Articles -->
+
+                        <!-- Footer -->
+                        <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                            <tr>
+                                <td class="p30-15 bbrr" style="padding: 50px 30px; border-radius:0px 0px 26px 26px;" bgcolor="#0e264b">
+                                    <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                        <tr>
+                                            <td class="text-footer1 pb10" style="color:#c1cddc; font-family:'Muli', Arial,sans-serif; font-size:16px; line-height:20px; text-align:center; padding-bottom:10px;">Wg Gen Web - Simple Web based configuration generator for WireGuard</td>
+                                        </tr>
+                                        <tr>
+                                            <td class="text-footer2" style="color:#8297b3; font-family:'Muli', Arial,sans-serif; font-size:12px; line-height:26px; text-align:center;"><a href="https://github.com/vx3r/wg-gen-web" target="_blank" class="link" style="color:#66c7ff; text-decoration:none;"><span class="link" style="color:#66c7ff; text-decoration:none;">More info on Github</span></a></td>
+                                        </tr>
+                                    </table>
+                                </td>
+                            </tr>
+                        </table>
+                        <!-- END Footer -->
+                    </td>
+                </tr>
+            </table>
+        </td>
+    </tr>
+</table>
+</body>
+</html>
+`
+
 	clientTpl = `
 [Interface]
 Address = {{.Client.Address}}
@@ -78,6 +264,24 @@ func DumpServerWg(clients []*model.Client, server *model.Server) (bytes.Buffer,
 	})
 }
 
+// DumpEmail dump server wg config with go template
+func DumpEmail(client *model.Client, qrcodePngName string) (bytes.Buffer, error) {
+	var tplBuff bytes.Buffer
+
+	t, err := template.New("email").Parse(emailTpl)
+	if err != nil {
+		return tplBuff, err
+	}
+
+	return dump(t, struct {
+		Client        *model.Client
+		QrcodePngName string
+	}{
+		Client:        client,
+		QrcodePngName: qrcodePngName,
+	})
+}
+
 func dump(tpl *template.Template, data interface{}) (bytes.Buffer, error) {
 	var tplBuff bytes.Buffer