1 import serialize from "serialize-javascript";
2 import express from "express";
3 import { StaticRouter } from "inferno-router";
4 import { renderToString } from "inferno-server";
5 import { matchPath } from "inferno-router";
6 import path from "path";
7 import { App } from "../shared/components/app";
12 } from "../shared/interfaces";
13 import { routes } from "../shared/routes";
14 import IsomorphicCookie from "isomorphic-cookie";
15 import { GetSite, GetSiteResponse, LemmyHttp } from "lemmy-js-client";
16 import process from "process";
17 import { Helmet } from "inferno-helmet";
18 import { initializeSite } from "../shared/initialize";
19 import { httpBaseInternal } from "../shared/env";
20 import { IncomingHttpHeaders } from "http";
21 import { setOptionalAuth } from "../shared/utils";
23 const server = express();
24 const [hostname, port] = process.env["LEMMY_UI_HOST"]
25 ? process.env["LEMMY_UI_HOST"].split(":")
26 : ["0.0.0.0", "1234"];
28 server.use(express.json());
29 server.use(express.urlencoded({ extended: false }));
30 server.use("/static", express.static(path.resolve("./dist")));
32 // server.use(cookieParser());
34 server.get("/*", async (req, res) => {
35 const activeRoute = routes.find(route => matchPath(req.path, route)) || {};
36 const context = {} as any;
37 let auth: string = IsomorphicCookie.load("jwt", req);
39 let getSiteForm: GetSite = {};
40 setOptionalAuth(getSiteForm, auth);
42 let promises: Promise<any>[] = [];
44 let headers = setForwardedHeaders(req.headers);
46 let initialFetchReq: InitialFetchRequest = {
47 client: new LemmyHttp(httpBaseInternal, headers),
52 // Get site data first
53 // This bypasses errors, so that the client can hit the error on its own,
54 // in order to remove the jwt on the browser. Necessary for wrong jwts
55 let try_site: any = await initialFetchReq.client.getSite(getSiteForm);
56 if (try_site.error == "not_logged_in") {
58 "Incorrect JWT token, skipping auth so frontend can remove jwt cookie"
60 delete getSiteForm.auth;
61 delete initialFetchReq.auth;
62 try_site = await initialFetchReq.client.getSite(getSiteForm);
64 let site: GetSiteResponse = try_site;
67 if (activeRoute.fetchInitialData) {
68 promises.push(...activeRoute.fetchInitialData(initialFetchReq));
71 let routeData = await Promise.all(promises);
73 // Redirect to the 404 if there's an API error
74 if (routeData[0] && routeData[0].error) {
75 let errCode = routeData[0].error;
76 return res.redirect(`/404?err=${errCode}`);
79 let acceptLang = req.headers["accept-language"]
80 ? req.headers["accept-language"].split(",")[0]
82 let lang = site.my_user
83 ? site.my_user.local_user.lang == "browser"
88 let isoData: IsoData = {
96 <StaticRouter location={req.url} context={isoData}>
97 <App siteRes={isoData.site_res} />
101 return res.redirect(context.url);
106 http-equiv="Content-Security-Policy"
107 content="default-src data: 'self'; connect-src * ws: wss:; frame-src *; img-src * data:; script-src 'self'; style-src 'self' 'unsafe-inline'; manifest-src 'self'"
111 const root = renderToString(wrapper);
112 const cspStr = process.env.LEMMY_EXTERNAL_HOST ? renderToString(cspHtml) : "";
113 const helmet = Helmet.renderStatic();
115 const config: ILemmyConfig = { wsHost: process.env.LEMMY_WS_HOST };
119 <html ${helmet.htmlAttributes.toString()} lang="en">
121 <script>window.isoData = ${serialize(isoData)}</script>
122 <script>window.lemmyConfig = ${serialize(config)}</script>
124 ${helmet.title.toString()}
125 ${helmet.meta.toString()}
127 <!-- Required meta tags -->
128 <meta name="Description" content="Lemmy">
129 <meta charset="utf-8">
130 <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
132 <!-- Content Security Policy -->
135 <!-- Web app manifest -->
136 <link rel="manifest" href="/static/assets/manifest.webmanifest">
139 <link rel="stylesheet" type="text/css" href="/static/styles/styles.css" />
141 <!-- Current theme and more -->
142 ${helmet.link.toString()}
145 <body ${helmet.bodyAttributes.toString()}>
147 <div class="alert alert-danger rounded-0" role="alert">
148 <b>Javascript is disabled. Actions will not work.</b>
152 <div id='root'>${root}</div>
153 <script defer src='/static/js/client.js'></script>
159 server.listen(Number(port), hostname, () => {
160 console.log(`http://${hostname}:${port}`);
163 function setForwardedHeaders(
164 headers: IncomingHttpHeaders
165 ): { [key: string]: string } {
169 if (headers["x-real-ip"]) {
170 out["x-real-ip"] = headers["x-real-ip"];
172 if (headers["x-forwarded-for"]) {
173 out["x-forwarded-for"] = headers["x-forwarded-for"];
179 process.on("SIGINT", () => {
180 console.info("Interrupted");