More federation work

lib/activitypub/activity.ts

@@ -33,6 +33,9 @@ export interface UndoActivity extends Activity {
 }
 
 export interface NoteObject extends Object {
+	to: string[];
+	cc: string[];
+	directMessage?: boolean;
 	attributedTo: string;
 	content: string;
 	published: string;
@@ -46,7 +49,9 @@ export interface DeleteActivity extends Activity {
 
 export interface ActorObject {
 	id: string;
+	url: string;
 	name: string;
+	preferredUsername: string;
 	inbox: string;
 	endpoints?: {
 		sharedInbox?: string;

lib/activitypub/federate.ts

@@ -2,7 +2,13 @@ import { promises as fs } from "fs";
 import crypto from "crypto";
 import uuidv4 from "uuid/v4";
 import request from "request";
-import { Activity, ArticleObject, FollowActivity, AcceptActivity, ActorObject, CreateActivity } from "./activity";
+import {
+	Activity,
+	ArticleObject,
+	ActorObject,
+	CreateActivity,
+	NoteObject
+} from "./activity";
 import { URL } from "url";
 import { getConnection } from "typeorm";
 import Actor from "../entity/Actor";
@@ -10,7 +16,7 @@ import Article from "../entity/Article";
 
 const domain = process.env.DOMAIN;
 
-function createActivity(article: ArticleObject): CreateActivity {
+export function createActivity(object: ArticleObject | NoteObject): CreateActivity {
 	const uuid = uuidv4();
 	const createObject = {
 		"@context": [
@@ -19,9 +25,9 @@ function createActivity(article: ArticleObject): CreateActivity {
 		"type": "Create",
 		"id": `https://${domain}/ap/${uuid}`,
 		"actor": `https://${domain}/ap/actor`,
-		"to": article.to,
-		"cc": article.cc,
-		"object": article
+		"to": object.to,
+		"cc": object.cc,
+		"object": object
 	};
 	return createObject;
 }
@@ -44,15 +50,7 @@ export async function getCachedActor(url: string): Promise<ActorObject | null> {
 	const result = await getConnection().manager.findByIds(Actor, [url]);
 	if (result.length > 0) {
 		const actor = result[0];
-		return {
-			id: actor.id,
-			name: actor.displayName,
-			inbox: actor.inbox,
-			icon: actor.iconURL,
-			publicKey: {
-				publicKeyPem: actor.publicKeyPem
-			}
-		} as ActorObject;
+		return actor.actorObject;
 	} else {
 		return null;
 	}

lib/activitypub/inbox.ts

@@ -1,6 +1,6 @@
 import { Router, Request, Response } from "express";
 import uuidv4 from "uuid/v4";
-import { getActor, signAndSend } from "./federate";
+import {createActivity, getActor, signAndSend} from "./federate";
 import { Activity, FollowActivity, AcceptActivity, UndoActivity, CreateActivity, NoteObject, DeleteActivity } from "./activity";
 import { Database } from "sqlite3";
 import { URL } from "url";
@@ -8,6 +8,7 @@ import sanitizeHtml from "sanitize-html";
 import Note from "../entity/Note";
 import { getConnection } from "typeorm";
 import Actor from "../entity/Actor";
+import Article from "../entity/Article";
 
 const domain = process.env.DOMAIN;
 
@@ -16,7 +17,7 @@ export default function inbox(router: Router) {
 	router.post("/inbox", handleInbox);
 }
 
-async function handleInbox(req: Request, res: Response) {
+function handleInbox(req: Request, res: Response) {
 	console.log(req.body);
 	const activity = req.body as Activity;
 	if (activity.type === "Follow") {
@@ -55,15 +56,22 @@ async function handleFollow(activity: Activity, req: Request, res: Response) {
 		"actor": `https://${domain}/ap/actor`,
 		"object": follow
 	} as AcceptActivity;
-	signAndSend(acceptObject, actor.inbox);
+	try {
+		await signAndSend(acceptObject, actor.inbox);
 		// prefer shared server inbox
 		const serverInbox = actor.endpoints && actor.endpoints.sharedInbox ? actor.endpoints.sharedInbox : actor.inbox;
 		await getConnection().createQueryBuilder()
 			.update(Actor)
-		.set({ isFollower: true })
+			.set({
+				isFollower: true,
+				inbox: serverInbox
+			})
 			.where("id = :id", {id: actor.id})
 			.execute();
 		res.end();
+	} catch (err) {
+		res.status(500).json({ message: "Encountered error handling follow.", error: err }).end();
+	}
 }
 
 async function handleCreate(activity: Activity, req: Request, res: Response) {
@@ -91,6 +99,36 @@ function sanitizeStatus(content: string): string {
 async function handleCreateNote(create: CreateActivity, req: Request, res: Response) {
 	const noteObject = create.object as NoteObject;
 	const actor = await getActor(noteObject.attributedTo); // get and cache the actor if it's not already cached
+
+	const asPublic = "https://www.w3.org/ns/activitystreams#Public";
+	const article = await getConnection().getRepository(Article).findOne({ where: { conversation: noteObject.conversation } });
+	if (!article) {
+		console.log(`Ignoring message not in response to an article: ${noteObject.id}`);
+		res.end();
+	} else if (!process.env.ACCEPT_NON_PUBLIC_NOTES && !noteObject.to.includes(asPublic) && !noteObject.cc.includes(asPublic)) {
+		console.log(`Ignoring non-public post: ${noteObject.id}`);
+
+		try {
+			const note: NoteObject = {
+				type: "Note",
+				id: `https://${domain}/ap/object/${uuidv4()}`,
+				to: [actor.id],
+				cc: [],
+				directMessage: true,
+				attributedTo: `https://${domain}/ap/actor`,
+				content: `<a href="${actor.url}" class="mention">@<span>${actor.preferredUsername}</span></a> Non-public posts are not accepted. To respond to a blog post, use either Public or Unlisted.`,
+				published: new Date().toISOString(),
+				inReplyTo: noteObject.id,
+				conversation: noteObject.conversation || `https://${domain}/ap/conversation/${uuidv4()}`
+			};
+			const responseCreate = createActivity(note);
+			signAndSend(responseCreate, actor.inbox);
+		} catch (err) {
+			console.error(`Couldn't send non-public reply Note to ${noteObject.id}`, err);
+		}
+
+		res.end();
+	} else {
 		const sanitizedContent = sanitizeStatus(noteObject.content);
 		const note = new Note();
 		note.id = noteObject.id;
@@ -102,10 +140,12 @@ async function handleCreateNote(create: CreateActivity, req: Request, res: Respo
 		note.published = noteObject.published;
 		try {
 			await getConnection().getRepository(Note).save(note);
+			res.end();
 		} catch (err) {
 			console.error(`Encountered error storing reply ${noteObject.id}`, err);
+			res.status(500).end();
+		}
 	}
-	res.end();
 }
 
 async function handleDelete(activity: Activity, req: Request, res: Response) {
@@ -123,7 +163,7 @@ async function handleDelete(activity: Activity, req: Request, res: Response) {
 	res.end();
 }
 
-async function handleUndo(activity: Activity, req: Request, res: Response) {
+function handleUndo(activity: Activity, req: Request, res: Response) {
 	const undo = activity as UndoActivity;
 	if (undo.object.type === "Follow") {
 		handleUndoFollow(undo, req, res);