Sharkey/src/server/activitypub.ts

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import { ObjectID } from 'mongodb';
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import * as Router from 'koa-router';
import * as json from 'koa-json-body';
import * as httpSignature from 'http-signature';
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import { renderActivity } from '../remote/activitypub/renderer';
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import Note from '../models/note';
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import User, { isLocalUser, ILocalUser, IUser } from '../models/user';
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import Emoji from '../models/emoji';
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import renderNote from '../remote/activitypub/renderer/note';
import renderKey from '../remote/activitypub/renderer/key';
import renderPerson from '../remote/activitypub/renderer/person';
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import renderEmoji from '../remote/activitypub/renderer/emoji';
import Outbox, { packActivity } from './activitypub/outbox';
import Followers from './activitypub/followers';
import Following from './activitypub/following';
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import Featured from './activitypub/featured';
import renderQuestion from '../remote/activitypub/renderer/question';
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import { inbox as processInbox } from '../queue';
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// Init router
const router = new Router();
//#region Routing
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function inbox(ctx: Router.IRouterContext) {
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let signature;
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ctx.req.headers.authorization = `Signature ${ctx.req.headers.signature}`;
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try {
signature = httpSignature.parseRequest(ctx.req, { 'headers': [] });
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} catch (e) {
ctx.status = 401;
return;
}
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processInbox(ctx.request.body, signature);
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ctx.status = 202;
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}
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function isActivityPubReq(ctx: Router.IRouterContext) {
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ctx.response.vary('Accept');
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const accepted = ctx.accepts('html', 'application/activity+json', 'application/ld+json');
return ['application/activity+json', 'application/ld+json'].includes(accepted as string);
}
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export function setResponseType(ctx: Router.IRouterContext) {
const accpet = ctx.accepts('application/activity+json', 'application/ld+json');
if (accpet === 'application/ld+json') {
ctx.response.type = 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"; charset=utf-8';
} else {
ctx.response.type = 'application/activity+json; charset=utf-8';
}
}
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// inbox
router.post('/inbox', json(), inbox);
router.post('/users/:user/inbox', json(), inbox);
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// note
router.get('/notes/:note', async (ctx, next) => {
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if (!isActivityPubReq(ctx)) return await next();
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if (!ObjectID.isValid(ctx.params.note)) {
ctx.status = 404;
return;
}
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const note = await Note.findOne({
_id: new ObjectID(ctx.params.note),
visibility: { $in: ['public', 'home'] },
localOnly: { $ne: true }
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});
if (note === null) {
ctx.status = 404;
return;
}
ctx.body = renderActivity(await renderNote(note, false));
ctx.set('Cache-Control', 'public, max-age=180');
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setResponseType(ctx);
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});
// note activity
router.get('/notes/:note/activity', async ctx => {
if (!ObjectID.isValid(ctx.params.note)) {
ctx.status = 404;
return;
}
const note = await Note.findOne({
_id: new ObjectID(ctx.params.note),
visibility: { $in: ['public', 'home'] },
localOnly: { $ne: true }
});
if (note === null) {
ctx.status = 404;
return;
}
ctx.body = renderActivity(await packActivity(note));
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ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
});
// question
router.get('/questions/:question', async (ctx, next) => {
if (!ObjectID.isValid(ctx.params.question)) {
ctx.status = 404;
return;
}
const poll = await Note.findOne({
_id: new ObjectID(ctx.params.question),
visibility: { $in: ['public', 'home'] },
localOnly: { $ne: true },
poll: {
$exists: true,
$ne: null
},
});
if (poll === null) {
ctx.status = 404;
return;
}
const user = await User.findOne({
_id: poll.userId
});
ctx.body = renderActivity(await renderQuestion(user as ILocalUser, poll));
setResponseType(ctx);
});
// outbox
router.get('/users/:user/outbox', Outbox);
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// followers
router.get('/users/:user/followers', Followers);
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// following
router.get('/users/:user/following', Following);
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// featured
router.get('/users/:user/collections/featured', Featured);
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// publickey
router.get('/users/:user/publickey', async ctx => {
if (!ObjectID.isValid(ctx.params.user)) {
ctx.status = 404;
return;
}
const userId = new ObjectID(ctx.params.user);
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const user = await User.findOne({
_id: userId,
host: null
});
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if (user === null) {
ctx.status = 404;
return;
}
if (isLocalUser(user)) {
ctx.body = renderActivity(renderKey(user));
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ctx.set('Cache-Control', 'public, max-age=180');
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setResponseType(ctx);
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} else {
ctx.status = 400;
}
});
// user
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async function userInfo(ctx: Router.IRouterContext, user: IUser) {
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if (user === null) {
ctx.status = 404;
return;
}
ctx.body = renderActivity(await renderPerson(user as ILocalUser));
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ctx.set('Cache-Control', 'public, max-age=180');
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setResponseType(ctx);
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}
router.get('/users/:user', async (ctx, next) => {
if (!isActivityPubReq(ctx)) return await next();
if (!ObjectID.isValid(ctx.params.user)) {
ctx.status = 404;
return;
}
const userId = new ObjectID(ctx.params.user);
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const user = await User.findOne({
_id: userId,
host: null
});
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await userInfo(ctx, user);
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});
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router.get('/@:user', async (ctx, next) => {
if (!isActivityPubReq(ctx)) return await next();
const user = await User.findOne({
usernameLower: ctx.params.user.toLowerCase(),
host: null
});
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await userInfo(ctx, user);
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});
//#endregion
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// emoji
router.get('/emojis/:emoji', async ctx => {
const emoji = await Emoji.findOne({
host: null,
name: ctx.params.emoji
});
if (emoji === null) {
ctx.status = 404;
return;
}
ctx.body = renderActivity(await renderEmoji(emoji));
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ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
});
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export default router;