misskey/packages/backend/src/server/activitypub.ts
2022-03-21 05:43:52 +09:00

233 lines
5.9 KiB
TypeScript
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

import Router from '@koa/router';
import json from 'koa-json-body';
import httpSignature from 'http-signature';
import { renderActivity } from '@/remote/activitypub/renderer/index.js';
import renderNote from '@/remote/activitypub/renderer/note.js';
import renderKey from '@/remote/activitypub/renderer/key.js';
import { renderPerson } from '@/remote/activitypub/renderer/person.js';
import renderEmoji from '@/remote/activitypub/renderer/emoji.js';
import Outbox, { packActivity } from './activitypub/outbox.js';
import Followers from './activitypub/followers.js';
import Following from './activitypub/following.js';
import Featured from './activitypub/featured.js';
import { inbox as processInbox } from '@/queue/index.js';
import { isSelfHost } from '@/misc/convert-host.js';
import { Notes, Users, Emojis, NoteReactions } from '@/models/index.js';
import { ILocalUser, User } from '@/models/entities/user.js';
import { In } from 'typeorm';
import { renderLike } from '@/remote/activitypub/renderer/like.js';
import { getUserKeypair } from '@/misc/keypair-store.js';
import { noteCache, userCache } from './activitypub/cache.js';
// Init router
const router = new Router();
//#region Routing
function inbox(ctx: Router.RouterContext) {
let signature;
try {
signature = httpSignature.parseRequest(ctx.req, { 'headers': [] });
} catch (e) {
ctx.status = 401;
return;
}
processInbox(ctx.request.body, signature);
ctx.status = 202;
}
const ACTIVITY_JSON = 'application/activity+json; charset=utf-8';
const LD_JSON = 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"; charset=utf-8';
function isActivityPubReq(ctx: Router.RouterContext) {
ctx.response.vary('Accept');
const accepted = ctx.accepts('html', ACTIVITY_JSON, LD_JSON);
return typeof accepted === 'string' && !accepted.match(/html/);
}
export function setResponseType(ctx: Router.RouterContext) {
const accept = ctx.accepts(ACTIVITY_JSON, LD_JSON);
if (accept === LD_JSON) {
ctx.response.type = LD_JSON;
} else {
ctx.response.type = ACTIVITY_JSON;
}
}
// inbox
router.post('/inbox', json(), inbox);
router.post('/users/:user/inbox', json(), inbox);
// note
router.get('/notes/:note', async (ctx, next) => {
if (!isActivityPubReq(ctx)) return await next();
// TODO: typeorm 3.0にしたら .then(x => x || null) は消せる
// nginxとかでキャッシュしてくれそうだからそもそもnode側でのキャッシュ不要かも
const note = await noteCache.fetch(ctx.params.note, () => Notes.findOne({
id: ctx.params.note,
visibility: In(['public' as const, 'home' as const]),
localOnly: false,
}).then(x => x || null));
if (note == null) {
ctx.status = 404;
return;
}
// リモートだったらリダイレクト
if (note.userHost != null) {
if (note.uri == null || isSelfHost(note.userHost)) {
ctx.status = 500;
return;
}
ctx.redirect(note.uri);
return;
}
ctx.body = renderActivity(await renderNote(note, false));
ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
});
// note activity
router.get('/notes/:note/activity', async ctx => {
const note = await Notes.findOne({
id: ctx.params.note,
userHost: null,
visibility: In(['public' as const, 'home' as const]),
localOnly: false,
});
if (note == null) {
ctx.status = 404;
return;
}
ctx.body = renderActivity(await packActivity(note));
ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
});
// outbox
router.get('/users/:user/outbox', Outbox);
// followers
router.get('/users/:user/followers', Followers);
// following
router.get('/users/:user/following', Following);
// featured
router.get('/users/:user/collections/featured', Featured);
// publickey
router.get('/users/:user/publickey', async ctx => {
const userId = ctx.params.user;
const user = await Users.findOne({
id: userId,
host: null,
});
if (user == null) {
ctx.status = 404;
return;
}
const keypair = await getUserKeypair(user.id);
if (Users.isLocalUser(user)) {
ctx.body = renderActivity(renderKey(user, keypair));
ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
} else {
ctx.status = 400;
}
});
// user
async function userInfo(ctx: Router.RouterContext, user: User | undefined | null) {
if (user == null) {
ctx.status = 404;
return;
}
ctx.body = renderActivity(await renderPerson(user as ILocalUser));
ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
}
router.get('/users/:user', async (ctx, next) => {
if (!isActivityPubReq(ctx)) return await next();
const userId = ctx.params.user;
// TODO: typeorm 3.0にしたら .then(x => x || null) は消せる
// nginxとかでキャッシュしてくれそうだからそもそもnode側でのキャッシュ不要かも
const user = await userCache.fetch(userId, () => Users.findOne({
id: userId,
host: null,
isSuspended: false,
}).then(x => x || null));
await userInfo(ctx, user);
});
router.get('/@:user', async (ctx, next) => {
if (!isActivityPubReq(ctx)) return await next();
const user = await Users.findOne({
usernameLower: ctx.params.user.toLowerCase(),
host: null,
isSuspended: false,
});
await userInfo(ctx, user);
});
//#endregion
// emoji
router.get('/emojis/:emoji', async ctx => {
const emoji = await Emojis.findOne({
host: null,
name: ctx.params.emoji,
});
if (emoji == null) {
ctx.status = 404;
return;
}
ctx.body = renderActivity(await renderEmoji(emoji));
ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
});
// like
router.get('/likes/:like', async ctx => {
const reaction = await NoteReactions.findOne(ctx.params.like);
if (reaction == null) {
ctx.status = 404;
return;
}
const note = await Notes.findOne(reaction.noteId);
if (note == null) {
ctx.status = 404;
return;
}
ctx.body = renderActivity(await renderLike(reaction, note));
ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
});
export default router;