fix one time links (#1304)

Closes #1302
Co-authored-by: Bernd Storath <999999bst@gmail.com>

README.md

@@ -24,7 +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)
+* WG_ENABLE_ONE_TIME_LINKS (default off)
 * WG_ENABLE_EXPIRES_TIME (default off)
 
 ## Requirements
@@ -123,7 +123,7 @@ 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 |
+| `WG_ENABLE_ONE_TIME_LINKS` | `false` | `true` | Enable display and generation of short one time download links (expire after 5 minutes) |
 | `MAX_AGE` | `0` | `1440` | The maximum age of Web UI sessions in minutes. `0` means that the session will exist until the browser is closed. |
 | `UI_ENABLE_SORT_CLIENTS` | `false` | `true`                         | Enable UI sort clients by name   |
 

docker-compose.yml

@@ -27,7 +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
+      # - WG_ENABLE_ONE_TIME_LINKS=true
       # - UI_ENABLE_SORT_CLIENTS=true
       # - WG_ENABLE_EXPIRES_TIME=true
 

src/config.js

@@ -38,6 +38,6 @@ 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';
+module.exports.WG_ENABLE_ONE_TIME_LINKS = process.env.WG_ENABLE_ONE_TIME_LINKS || 'false';
 module.exports.UI_ENABLE_SORT_CLIENTS = process.env.UI_ENABLE_SORT_CLIENTS || 'false';
 module.exports.WG_ENABLE_EXPIRES_TIME = process.env.WG_ENABLE_EXPIRES_TIME || 'false';

src/lib/Server.js

@@ -33,7 +33,7 @@ const {
   LANG,
   UI_TRAFFIC_STATS,
   UI_CHART_TYPE,
-  UI_SHOW_LINKS,
+  WG_ENABLE_ONE_TIME_LINKS,
   UI_ENABLE_SORT_CLIENTS,
   WG_ENABLE_EXPIRES_TIME,
 } = require('../config');
@@ -106,9 +106,9 @@ module.exports = class Server {
         return `"${UI_CHART_TYPE}"`;
       }))
 
-      .get('/api/ui-show-links', defineEventHandler((event) => {
+      .get('/api/wg-enable-one-time-links', defineEventHandler((event) => {
         setHeader(event, 'Content-Type', 'application/json');
-        return `${UI_SHOW_LINKS}`;
+        return `${WG_ENABLE_ONE_TIME_LINKS}`;
       }))
 
       .get('/api/ui-sort-clients', defineEventHandler((event) => {
@@ -133,6 +133,12 @@ module.exports = class Server {
         };
       }))
       .get('/cnf/:clientOneTimeLink', defineEventHandler(async (event) => {
+        if (WG_ENABLE_ONE_TIME_LINKS === 'false') {
+          throw createError({
+            status: 404,
+            message: 'Invalid state',
+          });
+        }
         const clientOneTimeLink = getRouterParam(event, 'clientOneTimeLink');
         const clients = await WireGuard.getClients();
         const client = clients.find((client) => client.oneTimeLink === clientOneTimeLink);
@@ -254,6 +260,12 @@ module.exports = class Server {
         return { success: true };
       }))
       .post('/api/wireguard/client/:clientId/generateOneTimeLink', defineEventHandler(async (event) => {
+        if (WG_ENABLE_ONE_TIME_LINKS === 'false') {
+          throw createError({
+            status: 404,
+            message: 'Invalid state',
+          });
+        }
         const clientId = getRouterParam(event, 'clientId');
         if (clientId === '__proto__' || clientId === 'constructor' || clientId === 'prototype') {
           throw createError({ status: 403 });

src/lib/WireGuard.js

@@ -25,6 +25,7 @@ const {
   WG_PRE_DOWN,
   WG_POST_DOWN,
   WG_ENABLE_EXPIRES_TIME,
+  WG_ENABLE_ONE_TIME_LINKS,
 } = require('../config');
 
 module.exports = class WireGuard {
@@ -152,7 +153,8 @@ ${client.preSharedKey ? `PresharedKey = ${client.preSharedKey}\n` : ''
         ? new Date(client.expiredAt)
         : null,
       allowedIPs: client.allowedIPs,
-      oneTimeLink: client.oneTimeLink ? client.oneTimeLink : null,
+      oneTimeLink: client.oneTimeLink ?? null,
+      oneTimeLinkExpiresAt: client.oneTimeLinkExpiresAt ?? null,
       downloadableConfig: 'privateKey' in client,
       persistentKeepalive: null,
       latestHandshakeAt: null,
@@ -310,6 +312,7 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
     const client = await this.getClient({ clientId });
     const key = `${clientId}-${Math.floor(Math.random() * 1000)}`;
     client.oneTimeLink = Math.abs(CRC32.str(key)).toString(16);
+    client.oneTimeLinkExpiresAt = new Date(Date.now() + 5 * 60 * 1000);
     client.updatedAt = new Date();
     await this.saveConfig();
   }
@@ -317,6 +320,7 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
   async eraseOneTimeLink({ clientId }) {
     const client = await this.getClient({ clientId });
     client.oneTimeLink = null;
+    client.oneTimeLinkExpiresAt = null;
     client.updatedAt = new Date();
     await this.saveConfig();
   }
@@ -396,8 +400,9 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
 
   async cronJobEveryMinute() {
     const config = await this.getConfig();
+    let needSaveConfig = false;
+    // Expires Feature
     if (WG_ENABLE_EXPIRES_TIME === 'true') {
-      let needSaveConfig = false;
       for (const client of Object.values(config.clients)) {
         if (client.enabled !== true) continue;
         if (client.expiredAt !== null && new Date() > new Date(client.expiredAt)) {
@@ -407,10 +412,22 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
           client.updatedAt = new Date();
         }
       }
-      if (needSaveConfig) {
+    }
-        await this.saveConfig();
+    // One Time Link Feature
+    if (WG_ENABLE_ONE_TIME_LINKS === 'true') {
+      for (const client of Object.values(config.clients)) {
+        if (client.oneTimeLink !== null && new Date() > new Date(client.oneTimeLinkExpiresAt)) {
+          debug(`Client ${client.id} One Time Link expired.`);
+          needSaveConfig = true;
+          client.oneTimeLink = null;
+          client.oneTimeLinkExpiresAt = null;
+          client.updatedAt = new Date();
+        }
       }
     }
+    if (needSaveConfig) {
+      await this.saveConfig();
+    }
   }
 
 };

src/www/index.html

@@ -256,7 +256,7 @@
                           {{!uiTrafficStats ? " · " : ""}}{{new Date(client.latestHandshakeAt) | timeago}}
                         </span>
                       </div>
-                      <div v-if="uiShowLinks && client.oneTimeLink !== null && client.oneTimeLink !== ''" :ref="'client-' + client.id + '-link'" class="text-gray-400 text-xs">
+                      <div v-if="enableOneTimeLinks && client.oneTimeLink !== null && client.oneTimeLink !== ''" :ref="'client-' + client.id + '-link'" class="text-gray-400 text-xs">
                         <a :href="'./cnf/' + client.oneTimeLink + ''">{{document.location.protocol}}//{{document.location.host}}/cnf/{{client.oneTimeLink}}</a>
                       </div>
                       <!-- Expire Date -->
@@ -385,7 +385,7 @@
                     </a>
 
                     <!-- Short OneTime Link -->
-                    <button v-if="uiShowLinks" :disabled="!client.downloadableConfig"
+                    <button v-if="enableOneTimeLinks" :disabled="!client.downloadableConfig"
                       class="align-middle inline-block bg-gray-100 dark:bg-neutral-600 dark:text-neutral-300 p-2 rounded transition"
                       :class="{
                         'hover:bg-red-800 dark:hover:bg-red-800 hover:text-white dark:hover:text-white': client.downloadableConfig,

src/www/js/api.js

@@ -64,10 +64,10 @@ class API {
     });
   }
 
-  async getUIShowLinks() {
+  async getWGEnableOneTimeLinks() {
     return this.call({
       method: 'get',
-      path: '/ui-show-links',
+      path: '/wg-enable-one-time-links',
     });
   }
 

src/www/js/app.js

@@ -92,7 +92,7 @@ new Vue({
     uiTrafficStats: false,
 
     uiChartType: 0,
-    uiShowLinks: false,
+    enableOneTimeLinks: false,
     enableSortClient: false,
     sortClient: true, // Sort clients by name, true = asc, false = desc
     enableExpireTime: false,
@@ -441,12 +441,12 @@ new Vue({
         this.uiChartType = 0;
       });
 
-    this.api.getUIShowLinks()
+    this.api.getWGEnableOneTimeLinks()
       .then((res) => {
-        this.uiShowLinks = res;
+        this.enableOneTimeLinks = res;
       })
       .catch(() => {
-        this.uiShowLinks = false;
+        this.enableOneTimeLinks = false;
       });
 
     this.api.getUiSortClients()