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 { SYMBOLS } from "../shared/components/symbols";
19 import { initializeSite } from "../shared/initialize";
20 import { httpBaseInternal } from "../shared/env";
21 import { IncomingHttpHeaders } from "http";
22 import { setOptionalAuth } from "../shared/utils";
24 const server = express();
25 const [hostname, port] = process.env["LEMMY_UI_HOST"]
26 ? process.env["LEMMY_UI_HOST"].split(":")
27 : ["0.0.0.0", "1234"];
29 server.use(express.json());
30 server.use(express.urlencoded({ extended: false }));
31 server.use("/static", express.static(path.resolve("./dist")));
33 // server.use(cookieParser());
35 server.get("/*", async (req, res) => {
36 const activeRoute = routes.find(route => matchPath(req.path, route)) || {};
37 const context = {} as any;
38 let auth: string = IsomorphicCookie.load("jwt", req);
40 let getSiteForm: GetSite = {};
41 setOptionalAuth(getSiteForm, auth);
43 let promises: Promise<any>[] = [];
45 let headers = setForwardedHeaders(req.headers);
47 let initialFetchReq: InitialFetchRequest = {
48 client: new LemmyHttp(httpBaseInternal, headers),
53 // Get site data first
54 // This bypasses errors, so that the client can hit the error on its own,
55 // in order to remove the jwt on the browser. Necessary for wrong jwts
56 let try_site: any = await initialFetchReq.client.getSite(getSiteForm);
57 if (try_site.error == "not_logged_in") {
59 "Incorrect JWT token, skipping auth so frontend can remove jwt cookie"
61 delete getSiteForm.auth;
62 delete initialFetchReq.auth;
63 try_site = await initialFetchReq.client.getSite(getSiteForm);
65 let site: GetSiteResponse = try_site;
68 if (activeRoute.fetchInitialData) {
69 promises.push(...activeRoute.fetchInitialData(initialFetchReq));
72 let routeData = await Promise.all(promises);
74 // Redirect to the 404 if there's an API error
75 if (routeData[0] && routeData[0].error) {
76 let errCode = routeData[0].error;
77 return res.redirect(`/404?err=${errCode}`);
80 let isoData: IsoData = {
87 <StaticRouter location={req.url} context={isoData}>
88 <App siteRes={isoData.site_res} />
92 return res.redirect(context.url);
97 http-equiv="Content-Security-Policy"
98 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'"
102 const root = renderToString(wrapper);
103 const symbols = renderToString(SYMBOLS);
104 const cspStr = process.env.LEMMY_EXTERNAL_HOST ? renderToString(cspHtml) : "";
105 const helmet = Helmet.renderStatic();
107 const config: ILemmyConfig = { wsHost: process.env.LEMMY_WS_HOST };
111 <html ${helmet.htmlAttributes.toString()} lang="en">
113 <script>window.isoData = ${serialize(isoData)}</script>
114 <script>window.lemmyConfig = ${serialize(config)}</script>
116 ${helmet.title.toString()}
117 ${helmet.meta.toString()}
119 <!-- Required meta tags -->
120 <meta name="Description" content="Lemmy">
121 <meta charset="utf-8">
122 <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
124 <!-- Content Security Policy -->
127 <!-- Web app manifest -->
128 <link rel="manifest" href="/static/assets/manifest.webmanifest">
131 <link rel="stylesheet" type="text/css" href="/static/styles/styles.css" />
133 <!-- Current theme and more -->
134 ${helmet.link.toString()}
141 <body ${helmet.bodyAttributes.toString()}>
143 <div class="alert alert-danger rounded-0" role="alert">
144 <b>Javascript is disabled. Actions will not work.</b>
148 <div id='root'>${root}</div>
149 <script defer src='/static/js/client.js'></script>
155 server.listen(Number(port), hostname, () => {
156 console.log(`http://${hostname}:${port}`);
159 function setForwardedHeaders(headers: IncomingHttpHeaders): {
160 [key: string]: string;
165 if (headers["x-real-ip"]) {
166 out["x-real-ip"] = headers["x-real-ip"];
168 if (headers["x-forwarded-for"]) {
169 out["x-forwarded-for"] = headers["x-forwarded-for"];
175 process.on("SIGINT", () => {
176 console.info("Interrupted");