Supports displaying short links (#1288)

README.md

@@ -24,6 +24,7 @@ You have found the easiest way to install & manage WireGuard on any Linux host!
 * Automatic Light / Dark Mode
 * Multilanguage Support
 * UI_TRAFFIC_STATS (default off)
+* UI_SHOW_LINKS (default off)
 
 ## Requirements
 
@@ -120,6 +121,7 @@ These options can be configured by setting environment variables using `-e KEY="
 | `LANG` | `en` | `de` | Web UI language (Supports: en, ua, ru, tr, no, pl, fr, de, ca, es, ko, vi, nl, is, pt, chs, cht, it, th, hi).                                        |
 | `UI_TRAFFIC_STATS` | `false` | `true` | Enable detailed RX / TX client stats in Web UI                                                                                                       |
 | `UI_CHART_TYPE` | `0` | `1` | UI_CHART_TYPE=0 # Charts disabled, UI_CHART_TYPE=1 # Line chart, UI_CHART_TYPE=2 # Area chart, UI_CHART_TYPE=3 # Bar chart                           |
+| `UI_SHOW_LINKS` | `false` | `true` | Enable display of a short download link in Web UI                                                                                                       |
 
 > If you change `WG_PORT`, make sure to also change the exposed port.
 

docker-compose.yml

@@ -27,6 +27,7 @@ services:
       # - WG_POST_DOWN=echo "Post Down" > /etc/wireguard/post-down.txt
       # - UI_TRAFFIC_STATS=true
       # - UI_CHART_TYPE=0 # (0 Charts disabled, 1 # Line chart, 2 # Area chart, 3 # Bar chart)
+      # - UI_SHOW_LINKS=true
 
     image: ghcr.io/wg-easy/wg-easy
     container_name: wg-easy

src/config.js

@@ -37,3 +37,4 @@ iptables -D FORWARD -o wg0 -j ACCEPT;
 module.exports.LANG = process.env.LANG || 'en';
 module.exports.UI_TRAFFIC_STATS = process.env.UI_TRAFFIC_STATS || 'false';
 module.exports.UI_CHART_TYPE = process.env.UI_CHART_TYPE || 0;
+module.exports.UI_SHOW_LINKS = process.env.UI_SHOW_LINKS || 'false';

src/lib/Server.js

@@ -32,6 +32,7 @@ const {
   LANG,
   UI_TRAFFIC_STATS,
   UI_CHART_TYPE,
+  UI_SHOW_LINKS,
 } = require('../config');
 
 const requiresPassword = !!PASSWORD_HASH;
@@ -92,6 +93,11 @@ module.exports = class Server {
         return `"${UI_CHART_TYPE}"`;
       }))
 
+      .get('/api/ui-show-links', defineEventHandler((event) => {
+        setHeader(event, 'Content-Type', 'application/json');
+        return `${UI_SHOW_LINKS}`;
+      }))
+
       // Authentication
       .get('/api/session', defineEventHandler((event) => {
         const authenticated = requiresPassword
@@ -103,6 +109,17 @@ module.exports = class Server {
           authenticated,
         };
       }))
+      .get('/:clientHash', defineEventHandler(async (event) => {
+        const clientHash = getRouterParam(event, 'clientHash');
+        const clients = await WireGuard.getClients();
+        const client = clients.find((client) => client.hash === clientHash);
+        if (!client) return;
+        const clientId = client.id;
+        const config = await WireGuard.getClientConfiguration({ clientId });
+        setHeader(event, 'Content-Disposition', `attachment; filename="${clientHash}.conf"`);
+        setHeader(event, 'Content-Type', 'text/plain');
+        return config;
+      }))
       .post('/api/session', defineEventHandler(async (event) => {
         const { password } = await readBody(event);
 

src/lib/WireGuard.js

@@ -5,6 +5,7 @@ const path = require('path');
 const debug = require('debug')('WireGuard');
 const crypto = require('node:crypto');
 const QRCode = require('qrcode');
+const CRC32 = require('crc-32');
 
 const Util = require('./Util');
 const ServerError = require('./ServerError');
@@ -147,6 +148,7 @@ ${client.preSharedKey ? `PresharedKey = ${client.preSharedKey}\n` : ''
       createdAt: new Date(client.createdAt),
       updatedAt: new Date(client.updatedAt),
       allowedIPs: client.allowedIPs,
+      hash: Math.abs(CRC32.str(clientId)).toString(16),
       downloadableConfig: 'privateKey' in client,
       persistentKeepalive: null,
       latestHandshakeAt: null,

src/package-lock.json

@@ -10,6 +10,7 @@
       "license": "CC BY-NC-SA 4.0",
       "dependencies": {
         "bcryptjs": "^2.4.3",
+        "crc-32": "^1.2.2",
         "debug": "^4.3.6",
         "express-session": "^1.18.0",
         "h3": "^1.12.0",
@@ -1209,6 +1210,18 @@
       "integrity": "sha512-NXdYc3dLr47pBkpUCHtKSwIOQXLVn8dZEuywboCOJY/osA0wFSLlSawr3KN8qXJEyX66FcONTH8EIlVuK0yyFA==",
       "license": "MIT"
     },
+    "node_modules/crc-32": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/crc-32/-/crc-32-1.2.2.tgz",
+      "integrity": "sha512-ROmzCKrTnOwybPcJApAA6WBWij23HVfGVNKqqrZpuyZOHqK2CwHSvpGuyt/UNNvaIjEd8X5IFGp4Mh+Ie1IHJQ==",
+      "license": "Apache-2.0",
+      "bin": {
+        "crc32": "bin/crc32.njs"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",

src/package.json

@@ -19,7 +19,8 @@
     "debug": "^4.3.6",
     "express-session": "^1.18.0",
     "h3": "^1.12.0",
-    "qrcode": "^1.5.4"
+    "qrcode": "^1.5.4",
+    "crc-32": "^1.2.2"
   },
   "devDependencies": {
     "eslint-config-athom": "^3.1.3",

src/www/index.html

@@ -242,6 +242,9 @@
                           {{!uiTrafficStats ? " · " : ""}}{{new Date(client.latestHandshakeAt) | timeago}}
                         </span>
                       </div>
+                      <div v-if="uiShowLinks" :ref="'client-' + client.id + '-hash'" class="text-gray-400 text-xs">
+                        <a :href="'./' + client.hash + ''">{{document.location.protocol}}//{{document.location.host}}/{{client.hash}}</a>
+                      </div>
                     </div>
 
                     <!-- Info -->

src/www/js/api.js

@@ -57,6 +57,13 @@ class API {
     });
   }
 
+  async getUIShowLinks() {
+    return this.call({
+      method: 'get',
+      path: '/ui-show-links',
+    });
+  }
+
   async getSession() {
     return this.call({
       method: 'get',

src/www/js/app.js

@@ -71,6 +71,7 @@ new Vue({
     uiTrafficStats: false,
 
     uiChartType: 0,
+    uiShowLinks: false,
     uiShowCharts: localStorage.getItem('uiShowCharts') === '1',
     uiTheme: localStorage.theme || 'auto',
     prefersDarkScheme: window.matchMedia('(prefers-color-scheme: dark)'),
@@ -384,6 +385,14 @@ new Vue({
         this.uiChartType = 0;
       });
 
+    this.api.getUIShowLinks()
+      .then((res) => {
+        this.uiShowLinks = res;
+      })
+      .catch(() => {
+        this.uiShowLinks = false;
+      });
+
     Promise.resolve().then(async () => {
       const lang = await this.api.getLang();
       if (lang !== localStorage.getItem('lang') && i18n.availableLocales.includes(lang)) {