Add nodeinfo support

lib/activitypub/index.ts

@@ -4,6 +4,7 @@ import comments from "./comments";
 import federate from "./federate";
 import followers from "./followers";
 import inbox from "./inbox";
+import nodeinfo from "./nodeinfo";
 import webfinger from "./webfinger";
 
 export = {
@@ -13,5 +14,6 @@ export = {
 	federate,
 	followers,
 	inbox,
+	nodeinfo,
 	webfinger
 };

lib/activitypub/nodeinfo.ts

@@ -0,0 +1,59 @@
+import {Request, Response, Router} from "express";
+import { promises as fs } from "fs";
+import {getConnection} from "typeorm";
+import Article from "../entity/Article";
+import Note from "../entity/Note";
+
+const domain = process.env.DOMAIN;
+
+export default async function nodeinfo(router: Router) {
+	router.get("/.well-known/nodeinfo", (req, res) => {
+		res.json({
+			links: [
+				{
+					href: `https://${domain}/nodeinfo/2.0.json`,
+					rel: "https://nodeinfo.diaspora.software/ns/schema/2.0"
+				},
+				{
+					href: `https://${domain}/nodeinfo/2.1.json`,
+					rel: "https://nodeinfo.diaspora.software/ns/schema/2.1"
+				}
+			]
+		});
+		res.end();
+	});
+
+	router.get("/nodeinfo/2.0.json", await handleNodeInfo("2.0"));
+	router.get("/nodeinfo/2.1.json", await handleNodeInfo("2.1"));
+}
+
+async function handleNodeInfo(version: string) {
+	const softwareVersion = JSON.parse((await fs.readFile("package.json")).toString()).version;
+	const postCount = await getConnection().getRepository(Article).count();
+	return async (req: Request, res: Response) => {
+		res.json({
+			version: version,
+			software: {
+				name: "shadowfacts_blog",
+				version: softwareVersion,
+				repository: version === "2.1" ? "https://git.shadowfacts.net/shadowfacts/shadowfacts.net" : undefined
+			},
+			protocols: ["activitypub"],
+			services: {
+				inbound: [],
+				outbound: ["atom1.0"]
+			},
+			openRegistrations: false,
+			usage: {
+				users: {
+					total: 1,
+					activeHalfyear: 1,
+					activeMonth: 1
+				},
+				localPosts: postCount,
+				localComments: await getConnection().getRepository(Note).count()
+			}
+		});
+		res.end();
+	};
+}

lib/index.ts

@@ -68,6 +68,7 @@ async function generate(): Promise<Page[]> {
 	activitypub.comments(apRouter);
 	activitypub.followers(apRouter);
 	activitypub.inbox(apRouter);
+	await activitypub.nodeinfo(apRouter);
 	activitypub.webfinger(apRouter);
 	activitypub.articles.route(apRouter);
 	app.use(apRouter);