-import serialize from 'serialize-javascript';
-import express from 'express';
-import { StaticRouter } from 'inferno-router';
-import { renderToString } from 'inferno-server';
-import { matchPath } from 'inferno-router';
-import path from 'path';
-import { App } from '../shared/components/app';
-import { InitialFetchRequest, IsoData } from '../shared/interfaces';
-import { routes } from '../shared/routes';
-import IsomorphicCookie from 'isomorphic-cookie';
-import { setAuth } from '../shared/utils';
-import { GetSiteForm, LemmyHttp } from 'lemmy-js-client';
-import process from 'process';
-import { Helmet } from 'inferno-helmet';
-import { initializeSite } from '../shared/initialize';
-import { httpUri } from '../shared/env';
-import { IncomingHttpHeaders } from 'http';
+import { None, Option } from "@sniptt/monads";
+import { serialize as serializeO } from "class-transformer";
+import express from "express";
+import fs from "fs";
+import { IncomingHttpHeaders } from "http";
+import { Helmet } from "inferno-helmet";
+import { matchPath, StaticRouter } from "inferno-router";
+import { renderToString } from "inferno-server";
+import IsomorphicCookie from "isomorphic-cookie";
+import { GetSite, GetSiteResponse, LemmyHttp, toOption } from "lemmy-js-client";
+import path from "path";
+import process from "process";
+import serialize from "serialize-javascript";
+import { App } from "../shared/components/app/app";
+import { SYMBOLS } from "../shared/components/common/symbols";
+import { httpBaseInternal } from "../shared/env";
+import {
+ ILemmyConfig,
+ InitialFetchRequest,
+ IsoData,
+} from "../shared/interfaces";
+import { routes } from "../shared/routes";
+import { initializeSite } from "../shared/utils";
const server = express();
-const port = 1234;
+const [hostname, port] = process.env["LEMMY_UI_HOST"]
+ ? process.env["LEMMY_UI_HOST"].split(":")
+ : ["0.0.0.0", "1234"];
+const extraThemesFolder =
+ process.env["LEMMY_UI_EXTRA_THEMES_FOLDER"] || "./extra_themes";
+
+if (!process.env["LEMMY_UI_DISABLE_CSP"]) {
+ server.use(function (_req, res, next) {
+ res.setHeader(
+ "Content-Security-Policy",
+ `default-src 'none'; connect-src *; img-src * data:; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; form-action 'self'; base-uri 'self'`
+ );
+ next();
+ });
+}
+const customHtmlHeader = process.env["LEMMY_UI_CUSTOM_HTML_HEADER"] || "";
server.use(express.json());
server.use(express.urlencoded({ extended: false }));
-server.use('/static', express.static(path.resolve('./dist')));
+server.use("/static", express.static(path.resolve("./dist")));
+
+const robotstxt = `User-Agent: *
+Disallow: /login
+Disallow: /settings
+Disallow: /create_community
+Disallow: /create_post
+Disallow: /create_private_message
+Disallow: /inbox
+Disallow: /setup
+Disallow: /admin
+Disallow: /password_change
+Disallow: /search/
+`;
+
+server.get("/robots.txt", async (_req, res) => {
+ res.setHeader("content-type", "text/plain; charset=utf-8");
+ res.send(robotstxt);
+});
+
+server.get("/css/themes/:name", async (req, res) => {
+ res.contentType("text/css");
+ const theme = req.params.name;
+ if (!theme.endsWith(".css")) {
+ res.send("Theme must be a css file");
+ }
+
+ const customTheme = path.resolve(`./${extraThemesFolder}/${theme}`);
+ if (fs.existsSync(customTheme)) {
+ res.sendFile(customTheme);
+ } else {
+ const internalTheme = path.resolve(`./dist/assets/css/themes/${theme}`);
+ res.sendFile(internalTheme);
+ }
+});
+
+function buildThemeList(): string[] {
+ let themes = [
+ "litera",
+ "materia",
+ "minty",
+ "solar",
+ "united",
+ "cyborg",
+ "darkly",
+ "darkly-red",
+ "journal",
+ "sketchy",
+ "vaporwave",
+ "vaporwave-dark",
+ "i386",
+ "litely",
+ "litely-red",
+ "nord",
+ ];
+ if (fs.existsSync(extraThemesFolder)) {
+ let dirThemes = fs.readdirSync(extraThemesFolder);
+ let cssThemes = dirThemes
+ .filter(d => d.endsWith(".css"))
+ .map(d => d.replace(".css", ""));
+ themes.push(...cssThemes);
+ }
+ return themes;
+}
+
+server.get("/css/themelist", async (_req, res) => {
+ res.type("json");
+ res.send(JSON.stringify(buildThemeList()));
+});
// server.use(cookieParser());
+server.get("/*", async (req, res) => {
+ try {
+ const activeRoute = routes.find(route => matchPath(req.path, route)) || {};
+ const context = {} as any;
+ let auth: Option<string> = toOption(IsomorphicCookie.load("jwt", req));
-server.get('/*', async (req, res) => {
- const activeRoute = routes.find(route => matchPath(req.path, route)) || {};
- const context = {} as any;
- let auth: string = IsomorphicCookie.load('jwt', req);
+ let getSiteForm = new GetSite({ auth });
- let getSiteForm: GetSiteForm = {};
- setAuth(getSiteForm, auth);
+ let promises: Promise<any>[] = [];
- let promises: Promise<any>[] = [];
+ let headers = setForwardedHeaders(req.headers);
- let headers = setForwardedHeaders(req.headers);
+ let initialFetchReq: InitialFetchRequest = {
+ client: new LemmyHttp(httpBaseInternal, headers),
+ auth,
+ path: req.path,
+ };
- let initialFetchReq: InitialFetchRequest = {
- client: new LemmyHttp(httpUri, headers),
- auth,
- path: req.path,
- };
+ // Get site data first
+ // This bypasses errors, so that the client can hit the error on its own,
+ // in order to remove the jwt on the browser. Necessary for wrong jwts
+ let try_site: any = await initialFetchReq.client.getSite(getSiteForm);
+ if (try_site.error == "not_logged_in") {
+ console.error(
+ "Incorrect JWT token, skipping auth so frontend can remove jwt cookie"
+ );
+ getSiteForm.auth = None;
+ initialFetchReq.auth = None;
+ try_site = await initialFetchReq.client.getSite(getSiteForm);
+ }
+ let site: GetSiteResponse = try_site;
+ initializeSite(site);
- // Get site data first
- let site = await initialFetchReq.client.getSite(getSiteForm);
- initializeSite(site);
+ if (activeRoute.fetchInitialData) {
+ promises.push(...activeRoute.fetchInitialData(initialFetchReq));
+ }
- if (activeRoute.fetchInitialData) {
- promises.push(...activeRoute.fetchInitialData(initialFetchReq));
- }
+ let routeData = await Promise.all(promises);
- let routeData = await Promise.all(promises);
+ // Redirect to the 404 if there's an API error
+ if (routeData[0] && routeData[0].error) {
+ let errCode = routeData[0].error;
+ console.error(errCode);
+ if (errCode == "instance_is_private") {
+ return res.redirect(`/signup`);
+ } else {
+ return res.send(`404: ${removeAuthParam(errCode)}`);
+ }
+ }
- // Redirect to the 404 if there's an API error
- if (routeData[0] && routeData[0].error) {
- let errCode = routeData[0].error;
- return res.redirect(`/404?err=${errCode}`);
- }
+ let isoData: IsoData = {
+ path: req.path,
+ site_res: site,
+ routeData,
+ };
- let acceptLang = req.headers['accept-language']
- ? req.headers['accept-language'].split(',')[0]
- : 'en';
- let lang = !!site.my_user
- ? site.my_user.lang == 'browser'
- ? acceptLang
- : 'en'
- : acceptLang;
-
- let isoData: IsoData = {
- path: req.path,
- site,
- routeData,
- lang,
- };
+ const wrapper = (
+ <StaticRouter location={req.url} context={isoData}>
+ <App />
+ </StaticRouter>
+ );
+ if (context.url) {
+ return res.redirect(context.url);
+ }
- const wrapper = (
- <StaticRouter location={req.url} context={isoData}>
- <App site={isoData.site} />
- </StaticRouter>
- );
- if (context.url) {
- return res.redirect(context.url);
- }
+ const eruda = (
+ <>
+ <script src="//cdn.jsdelivr.net/npm/eruda"></script>
+ <script>eruda.init();</script>
+ </>
+ );
+ const erudaStr = process.env["LEMMY_UI_DEBUG"] ? renderToString(eruda) : "";
+ const root = renderToString(wrapper);
+ const symbols = renderToString(SYMBOLS);
+ const helmet = Helmet.renderStatic();
- const root = renderToString(wrapper);
- const helmet = Helmet.renderStatic();
+ const config: ILemmyConfig = { wsHost: process.env.LEMMY_UI_LEMMY_WS_HOST };
- res.send(`
+ res.send(`
<!DOCTYPE html>
<html ${helmet.htmlAttributes.toString()} lang="en">
<head>
- <script>window.isoData = ${serialize(isoData)}</script>
+ <script>window.isoData = ${serializeO(isoData)}</script>
+ <script>window.lemmyConfig = ${serialize(config)}</script>
+
+ <!-- A remote debugging utility for mobile -->
+ ${erudaStr}
+
+ <!-- Custom injected script -->
+ ${customHtmlHeader}
${helmet.title.toString()}
${helmet.meta.toString()}
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
- <!-- Content Security Policy -->
- <meta http-equiv="Content-Security-Policy" content="default-src 'none'; connect-src 'self'; frame-src *; img-src *; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'">
-
<!-- Web app manifest -->
<link rel="manifest" href="/static/assets/manifest.webmanifest">
- <!-- Icons -->
- <link rel="shortcut icon" type="image/svg+xml" href="/static/assets/icons/favicon.svg" />
- <link rel="apple-touch-icon" href="/static/assets/icons/apple-touch-icon.png" />
-
<!-- Styles -->
<link rel="stylesheet" type="text/css" href="/static/styles/styles.css" />
<!-- Current theme and more -->
${helmet.link.toString()}
+
+ <!-- Icons -->
+ ${symbols}
+
</head>
<body ${helmet.bodyAttributes.toString()}>
</body>
</html>
`);
+ } catch (err) {
+ console.error(err);
+ return res.send(`404: ${removeAuthParam(err)}`);
+ }
});
-server.listen(port, () => {
- console.log(`http://localhost:${port}`);
+server.listen(Number(port), hostname, () => {
+ console.log(`http://${hostname}:${port}`);
});
-function setForwardedHeaders(
- headers: IncomingHttpHeaders
-): { [key: string]: string } {
+function setForwardedHeaders(headers: IncomingHttpHeaders): {
+ [key: string]: string;
+} {
let out = {
host: headers.host,
};
- if (headers['x-real-ip']) {
- out['x-real-ip'] = headers['x-real-ip'];
+ if (headers["x-real-ip"]) {
+ out["x-real-ip"] = headers["x-real-ip"];
}
- if (headers['x-forwarded-for']) {
- out['x-forwarded-for'] = headers['x-forwarded-for'];
+ if (headers["x-forwarded-for"]) {
+ out["x-forwarded-for"] = headers["x-forwarded-for"];
}
return out;
}
-process.on('SIGINT', () => {
- console.info('Interrupted');
+process.on("SIGINT", () => {
+ console.info("Interrupted");
process.exit(0);
});
+
+function removeAuthParam(err: any): string {
+ return removeParam(err.toString(), "auth");
+}
+
+function removeParam(url: string, parameter: string): string {
+ return url
+ .replace(new RegExp("[?&]" + parameter + "=[^&#]*(#.*)?$"), "$1")
+ .replace(new RegExp("([?&])" + parameter + "=[^&]*&"), "$1");
+}