thedevs-network · ItsSpaceMan · Apr 16, 2025 · May 1, 2025 · May 15, 2025 · May 15, 2025
diff --git a/.example.env b/.example.env
@@ -7,6 +7,12 @@ SITE_NAME=Kutt
 # Optional - The domain that this website is on
 DEFAULT_DOMAIN=localhost:3000
 
+# Optional - The path the service will run on (ex: localhost:3000/url-shortener)
+BASE_PATH=
+
+# Optional - Whether the shortened links will use the base path (default false)
+SHORT_URLS_INCLUDE_PATH=false
+
 # Required - A passphrase to encrypt JWT. Use a random long string
 JWT_SECRET=
 

diff --git a/README.md b/README.md
@@ -96,6 +96,8 @@ You can use files for each of the variables by appending `_FILE` to the name of
 | `PORT` |  The port to start the app on | `3000` | `8888` |
 | `SITE_NAME` |  Name of the website | `Kutt` | `Your Site` |
 | `DEFAULT_DOMAIN` |  The domain address that this app runs on | `localhost:3000` | `yoursite.com` |
+| `BASE_PATH` | The path the service will run on | `/` | `/url-shortener` |
+| `SHORT_URLS_INCLUDE_PATH` | Whether the shortened links will use the base path. If this value is false and BASE_PATH is specified, your proxy will need to route to the BASE_PATH of the service. | `false` | `true` |
 | `LINK_LENGTH` | The length of of shortened address | `6` | `5` |
 | `LINK_CUSTOM_ALPHABET` | Alphabet used to generate custom addresses. Default value omits o, O, 0, i, I, l, 1, and j to avoid confusion when reading the URL. | (abcd..789) | `abcABC^&*()@` |
 | `DISALLOW_REGISTRATION` | Disable registration. Note that if `MAIL_ENABLED` is set to false, then the registration would still be disabled since it relies on emails to sign up users. | `true` | `false` |

diff --git a/package-lock.json b/package-lock.json
diff --git a/server/env.js b/server/env.js
@@ -65,6 +65,8 @@ const spec = {
   REPORT_EMAIL: str({ default: "" }),
   CONTACT_EMAIL: str({ default: "" }),
   NODE_APP_INSTANCE: num({ default: 0 }),
+  BASE_PATH: str({ default: "" }),
+  SHORT_URLS_INCLUDE_PATH: bool({ default: false }),
 };
 
 for (const key in spec) {

diff --git a/server/handlers/auth.handler.js b/server/handlers/auth.handler.js
@@ -28,11 +28,11 @@ function authenticate(type, error, isStrict, redirect) {
         (user && user.banned))
       ) {
         if (redirect === "page") {
-          res.redirect("/logout");
+          res.redirect(utils.getPath('/logout'));
           return;
         }
         if (redirect === "header") {
-          res.setHeader("HX-Redirect", "/logout");
+          res.setHeader("HX-Redirect", utils.getPath('/logout'));
           res.send("NOT_AUTHENTICATED");
           return;
         }
@@ -357,7 +357,7 @@ function featureAccess(features, redirect) {
     for (let i = 0; i < features.length; ++i) {
       if (!features[i]) {
         if (redirect) {
-          return res.redirect("/");
+          return res.redirect(utils.getPath("/"));
         } else {
           throw new CustomError("Request is not allowed.", 400);
         }

diff --git a/server/handlers/helpers.handler.js b/server/handlers/helpers.handler.js
@@ -6,6 +6,7 @@ const { CustomError } = require("../utils");
 const query = require("../queries");
 const redis = require("../redis");
 const env = require("../env");
+const utils = require("../utils");
 
 function error(error, req, res, _next) {
   if (!(error instanceof CustomError)) {
@@ -131,7 +132,7 @@ async function adminSetup(req, res, next) {
     return;
   }
 
-  res.redirect("/create-admin");
+  res.redirect(utils.getPath('/create-admin'));
 }
 
 module.exports = {

diff --git a/server/handlers/links.handler.js b/server/handlers/links.handler.js
@@ -458,7 +458,7 @@ async function ban(req, res) {
 
 async function redirect(req, res, next) {
   const isPreservedUrl = utils.preservedURLs.some(
-    item => item === req.path.replace("/", "")
+    item => item === req.path.replace(env.BASE_PATH, "")
   );
 
   if (isPreservedUrl) return next();
@@ -480,12 +480,12 @@ async function redirect(req, res, next) {
   // 3. When no link, if has domain redirect to domain's homepage
   // otherwise redirect to 404
   if (!link) {
-    return res.redirect(domain?.homepage || "/404");
+    return res.redirect(domain?.homepage || utils.getPath('/404'));
   }
 
   // 4. If link is banned, redirect to banned page.
   if (link.banned) {
-    return res.redirect("/banned");
+  return res.redirect(utils.getPath("/banned"));
   }
 
   // 5. If wants to see link info, then redirect
@@ -594,7 +594,7 @@ async function redirectCustomDomainHomepage(req, res, next) {
   const path = req.path;
   const pathName = path.replace("/", "").split("/")[0];
   if (
-    path === "/" ||
+    path === env.BASE_PATH ||
     utils.preservedURLs.includes(pathName)
   ) {
     const domain = await query.domain.find({ address: host });
@@ -618,7 +618,7 @@ async function stats(req, res) {
 
   if (!link) {
     if (req.isHTML) {
-      res.setHeader("HX-Redirect", "/404");
+      res.setHeader("HX-Redirect", utils.getPath("/404"));
       res.status(200).send("");
       return;
     }

diff --git a/server/handlers/locals.handler.js b/server/handlers/locals.handler.js
@@ -30,6 +30,7 @@ function config(req, res, next) {
   res.locals.mail_enabled = env.MAIL_ENABLED;
   res.locals.report_email = env.REPORT_EMAIL;
   res.locals.custom_styles = utils.getCustomCSSFileNames();
+  res.locals.base_path = env.BASE_PATH;
   next();
 }
 

diff --git a/server/handlers/renders.handler.js b/server/handlers/renders.handler.js
@@ -10,7 +10,7 @@ const env = require("../env");
 
 async function homepage(req, res) {
   if (env.DISALLOW_ANONYMOUS_LINKS && !req.user) {
-    res.redirect("/login");
+    res.redirect(utils.getPath("/login"));
     return;
   }
   res.render("homepage", {
@@ -20,7 +20,7 @@ async function homepage(req, res) {
 
 async function login(req, res) {
   if (req.user) {
-    res.redirect("/");
+    res.redirect(utils.getPath("/"));
     return;
   }
 
@@ -39,7 +39,7 @@ function logout(req, res) {
 async function createAdmin(req, res) {
   const isThereAUser = await query.user.findAny();
   if (isThereAUser) {
-    res.redirect("/login");
+    res.redirect(utils.getPath("/login"));
     return;
   }
   res.render("create_admin", {
@@ -79,7 +79,7 @@ async function banned(req, res) {
 
 async function report(req, res) {
   if (!env.REPORT_EMAIL) {
-    res.redirect("/");
+    res.redirect(utils.getPath("/"));
     return;
   }
   res.render("report", {

diff --git a/server/mail/mail.js b/server/mail/mail.js
@@ -35,14 +35,17 @@ if (env.MAIL_ENABLED) {
   resetEmailTemplate = fs
     .readFileSync(resetEmailTemplatePath, { encoding: "utf-8" })
     .replace(/{{domain}}/gm, env.DEFAULT_DOMAIN)
+    .replace(/{{base_path}}/gm, env.BASE_PATH)
     .replace(/{{site_name}}/gm, env.SITE_NAME);
   verifyEmailTemplate = fs
     .readFileSync(verifyEmailTemplatePath, { encoding: "utf-8" })
     .replace(/{{domain}}/gm, env.DEFAULT_DOMAIN)
+    .replace(/{{base_path}}/gm, env.BASE_PATH)
     .replace(/{{site_name}}/gm, env.SITE_NAME);
   changeEmailTemplate = fs
     .readFileSync(changeEmailTemplatePath, { encoding: "utf-8" })
     .replace(/{{domain}}/gm, env.DEFAULT_DOMAIN)
+    .replace(/{{base_path}}/gm, env.BASE_PATH)
     .replace(/{{site_name}}/gm, env.SITE_NAME);
 }
 

diff --git a/server/mail/template-reset.html b/server/mail/template-reset.html
@@ -457,7 +457,7 @@
                         >
                           <!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="border-spacing: 0; border-collapse: collapse; mso-table-lspace:0pt; mso-table-rspace:0pt;"><tr><td style="padding-right: 30px; padding-left: 30px; padding-top:30px; padding-bottom:30px;" align="left"><v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="urn:schemas-microsoft-com:office:word" href="http://{{domain}}/reset-password/{{resetpassword}}" style="height:31pt; v-text-anchor:middle; width:81pt;" arcsize="143%" strokecolor="#2196F3" fillcolor="#2196F3"><w:anchorlock/><v:textbox inset="0,0,0,0"><center style="color:#ffffff; font-family:Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size:16px;"><![endif]-->
                           <a
-                            href="https://{{domain}}/reset-password/{{resetpassword}}"
+                            href="https://{{domain}}{{base_path}}/reset-password/{{resetpassword}}"
                             target="_blank"
                             style="display: block;text-decoration: none;-webkit-text-size-adjust: none;text-align: center;color: #ffffff; background-color: #2196F3; border-radius: 60px; -webkit-border-radius: 60px; -moz-border-radius: 60px; max-width: 128px; width: 48px;width: auto; border-top: 0px solid transparent; border-right: 0px solid transparent; border-bottom: 0px solid transparent; border-left: 0px solid transparent; padding-top: 5px; padding-right: 30px; padding-bottom: 5px; padding-left: 30px; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif;mso-border-alt: none"
                           >
@@ -478,7 +478,7 @@
                             <span style="font-size:14px; line-height:25px;">
                               <a
                                 style="color:#0068A5;text-decoration: underline;"
-                                href="https://{{domain}}"
+                                href="https://{{domain}}{{base_path}}"
                                 target="_blank"
                                 rel="noopener"
                                 data-mce-selected="1"

diff --git a/server/server.js b/server/server.js
@@ -1,4 +1,5 @@
 const env = require("./env");
+const { Router } = require("express");
 
 const cookieParser = require("cookie-parser");
 const passport = require("passport");
@@ -40,10 +41,13 @@ app.use(cookieParser());
 app.use(express.json());
 app.use(express.urlencoded({ extended: true }));
 
+const router = Router();
+
 // serve static
-app.use("/images", express.static("custom/images"));
-app.use("/css", express.static("custom/css", { extensions: ["css"] }));
-app.use(express.static("static"));
+router.use("/images", express.static("custom/images"));
+router.use("/css", express.static("custom/css", { extensions: ["css"] }));
+router.use(express.static("static"));
+router.use(express.static("static"));
 
 app.use(passport.initialize());
 app.use(locals.isHTML);
@@ -59,21 +63,23 @@ app.set("views", [
 utils.registerHandlebarsHelpers();
 
 // if is custom domain, redirect to the set homepage
-app.use(asyncHandler(links.redirectCustomDomainHomepage));
+router.use(asyncHandler(links.redirectCustomDomainHomepage));
 
 // render html pages
-app.use("/", routes.render);
+router.use("/", routes.render);
 
 // handle api requests
-app.use("/api/v2", routes.api);
-app.use("/api", routes.api);
+router.use("/api/v2", routes.api);
+router.use("/api", routes.api);
 
-// finally, redirect the short link to the target
-app.get("/:id", asyncHandler(links.redirect));
+// redirect the short link to the target (using BASE_PATH if specified)
+(env.SHORT_URLS_INCLUDE_PATH ? router : app).get("/:id", asyncHandler(links.redirect));
 
-// 404 pages that don't exist
-app.get("*", renders.notFound);
+// finally, 404 pages that don't exist
+router.get("*", renders.notFound);
 
+// configure to run on the specified base path
+app.use(env.BASE_PATH, router);
 // handle errors coming from above routes
 app.use(helpers.error);
 

diff --git a/server/utils/utils.js b/server/utils/utils.js
@@ -74,7 +74,18 @@ function addProtocol(url) {
 
 function getShortURL(address, domain) {
   const protocol = (env.CUSTOM_DOMAIN_USE_HTTPS || !domain) && !env.isDev ? "https://" : "http://";
-  const link = `${domain || env.DEFAULT_DOMAIN}/${address}`;
+  const linkDomain = domain || env.DEFAULT_DOMAIN;
+  let path = '';
+
+  if (env.BASE_PATH) {
+    if (linkDomain === env.DEFAULT_DOMAIN) {
+      path = env.BASE_PATH;
+    } else if (env.SHORT_URLS_INCLUDE_PATH) {
+      path = env.BASE_PATH;
+    }
+  }
+
+  const link = `${linkDomain}${path}/${address}`;
   const url = `${protocol}${link}`;
   return { address, link, url };
 }
@@ -185,6 +196,10 @@ const preservedURLs = [
   "pricing"
 ];
 
+function getPath(path) {
+  return `${env.BASE_PATH}${path}`;
+}
+
 function parseBooleanQuery(query) {
   if (query === "true" || query === true) return true;
   if (query === "false" || query === false) return false;
@@ -410,6 +425,7 @@ module.exports = {
   parseDatetime,
   parseTimestamps,
   preservedURLs,
+  getPath,
   registerHandlebarsHelpers,
   removeWww,
   sanitize,

diff --git a/server/views/404.hbs b/server/views/404.hbs
@@ -3,7 +3,7 @@
   <h2>
     404 | Link could not be found.
   </h2>
-  <a class="back-to-home" href="/">
+  <a class="back-to-home" href="./">
     ← Back to homepage
   </a>
 </div>

diff --git a/server/views/banned.hbs b/server/views/banned.hbs
@@ -6,7 +6,7 @@
   </h2>
   <h4>
     If you noticed a malware/scam link shortened by {{default_domain}}, 
-    <a href="/report" title="Send report">
+    <a href="./report" title="Send report">
       send us a report
     </a>.
   </h4>

diff --git a/server/views/error.hbs b/server/views/error.hbs
@@ -4,7 +4,7 @@
     Error!
   </h2>
   <p>{{message}}</p>
-  <a class="back-to-home" href="/">
+  <a class="back-to-home" href="./">
     ← Back to homepage
   </a>
 </div>

diff --git a/server/views/layout.hbs b/server/views/layout.hbs
@@ -3,29 +3,29 @@
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
-  <link rel="icon" sizes="196x196" href="/images/favicon-196x196.png" />
-  <link rel="icon" sizes="32x32" href="/images/favicon-32x32.png" />
-  <link rel="icon" sizes="16x16" href="/images/favicon-16x16.png" />
-  <link rel="apple-touch-icon" href="/images/favicon-196x196.png" />
-  <link rel="mask-icon" href="/images/icon.svg" color="blue" />
-  <link rel="manifest" href="/manifest.webmanifest" />
+  <link rel="icon" sizes="196x196" href="./images/favicon-196x196.png" />
+  <link rel="icon" sizes="32x32" href="./images/favicon-32x32.png" />
+  <link rel="icon" sizes="16x16" href="./images/favicon-16x16.png" />
+  <link rel="apple-touch-icon" href="./images/favicon-196x196.png" />
+  <link rel="mask-icon" href="./images/icon.svg" color="blue" />
+  <link rel="manifest" href="./manifest.webmanifest" />
   <meta name="theme-color" content="#f3f3f3" />
   <meta property="fb:app_id" content="123456789" />
   <meta name="htmx-config" content='{"withCredentials":true}'>
-  <meta property="og:url" content="https://{{default_domain}}" />
+  <meta property="og:url" content="https://{{default_domain}}{{base_path}}" />
   <meta property="og:type" content="website" />
   <meta property="og:title" content="{{site_name}}" />
-  <meta property="og:image" content="https://{{default_domain}}/images/card.png" />
+  <meta property="og:image" content="https://{{default_domain}}{{base_path}}/images/card.png" />
   <meta property="og:description" content="Free & Open Source Modern URL Shortener" />
-  <meta name="twitter:url" content="https://{{default_domain}}" />
+  <meta name="twitter:url" content="https://{{default_domain}}{{base_path}}" />
   <meta name="twitter:title" content="{{site_name}}" />
   <meta name="twitter:description" content="Free & Open Source Modern URL Shortener" />
-  <meta name="twitter:image" content="https://{{default_domain}}/images/card.png" />
+  <meta name="twitter:image" content="https://{{default_domain}}{{base_path}}/images/card.png" />
   <meta name="description" content="{{site_name}} is a free and open source URL shortener with custom domains and stats." />
   <title>{{site_name}} | {{title}}</title>
-  <link rel="stylesheet" href="/css/styles.css">
+  <link rel="stylesheet" href="./css/styles.css">
   {{#each custom_styles}}
-    <link rel="stylesheet" href="/css/{{this}}">
+    <link rel="stylesheet" href="./css/{{this}}">
   {{/each}}
   {{{block "stylesheets"}}}
 </head>
@@ -35,8 +35,8 @@
   </div>
 
   {{{block "scripts"}}}
-  <script src="/libs/htmx.min.js"></script>
-  <script src="/libs/qrcode.min.js"></script>
-  <script src="/scripts/main.js"></script>
+  <script src="./libs/htmx.min.js"></script>
+  <script src="./libs/qrcode.min.js"></script>
+  <script src="./scripts/main.js"></script>
 </body>
 </html>
diff --git a/server/views/logout.hbs b/server/views/logout.hbs
@@ -1,5 +1,5 @@
 {{> header}}
-<div class="login-signup-message" hx-get="/" hx-trigger="load delay:1s" hx-target="body" hx-push-url="/">
+<div class="login-signup-message" hx-get="./" hx-trigger="load delay:1s" hx-target="body" hx-push-url="./">
   <h1>
     Logged out. Redirecting to homepage...
   </h1>

diff --git a/server/views/partials/admin/dialog/add_domain.hbs b/server/views/partials/admin/dialog/add_domain.hbs
@@ -2,7 +2,7 @@
   <h2>Add domain</h2>
   <form
     id="add-domain-form"
-    hx-post="/api/domains/admin" 
+    hx-post="./api/domains/admin" 
     hx-target="closest .content" 
     hx-swap="outerHTML" 
     hx-indicator="closest .content"