import * as mongo from 'mongodb'; import * as Router from 'koa-router'; import config from '../config'; import parseAcct from '../misc/acct/parse'; import User from '../models/user'; import Acct from '../misc/acct/type'; import { links } from './nodeinfo'; import { escapeAttribute, escapeValue } from '../prelude/xml'; // Init router const router = new Router(); const XRD = (...x: { element: string, value?: string, attributes?: Record<string, string> }[]) => `<?xml version="1.0" encoding="UTF-8"?><XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">${x.map(({ element, value, attributes }) => `<${ Object.entries(typeof attributes === 'object' && attributes || {}).reduce((a, [k, v]) => `${a} ${k}="${escapeAttribute(v)}"`, element) }${ typeof value === 'string' ? `>${escapeValue(value)}</${element}` : '/' }>`).reduce((a, c) => a + c, '')}</XRD>`; const webFingerPath = '/.well-known/webfinger'; const jrd = 'application/jrd+json'; const xrd = 'application/xrd+xml'; router.get('/.well-known/host-meta', async ctx => { ctx.set('Content-Type', xrd); ctx.body = XRD({ element: 'Link', attributes: { type: xrd, template: `${config.url}${webFingerPath}?resource={uri}` }}); }); router.get('/.well-known/host-meta.json', async ctx => { ctx.set('Content-Type', jrd); ctx.body = { links: [{ rel: 'lrdd', type: jrd, template: `${config.url}${webFingerPath}?resource={uri}` }] }; }); router.get('/.well-known/nodeinfo', async ctx => { ctx.body = { links }; }); router.get(webFingerPath, async ctx => { const generateQuery = (resource: string) => resource.startsWith(`${config.url.toLowerCase()}/users/`) ? fromId(new mongo.ObjectID(resource.split('/').pop())) : fromAcct(parseAcct( resource.startsWith(`${config.url.toLowerCase()}/@`) ? resource.split('/').pop() : resource.startsWith('acct:') ? resource.slice('acct:'.length) : resource)); const fromId = (_id: mongo.ObjectID): Record<string, any> => ({ _id, host: null }); const fromAcct = (acct: Acct): Record<string, any> | number => !acct.host || acct.host === config.host.toLowerCase() ? { usernameLower: acct.username, host: null } : 422; if (typeof ctx.query.resource !== 'string') { ctx.status = 400; return; } const query = generateQuery(ctx.query.resource.toLowerCase()); if (typeof query === 'number') { ctx.status = query; return; } const user = await User.findOne(query); if (user === null) { ctx.status = 404; return; } const subject = `acct:${user.username}@${config.host}`; const self = { rel: 'self', type: 'application/activity+json', href: `${config.url}/users/${user._id}` }; const profilePage = { rel: 'http://webfinger.net/rel/profile-page', type: 'text/html', href: `${config.url}/@${user.username}` }; const subscribe = { rel: 'http://ostatus.org/schema/1.0/subscribe', template: `${config.url}/authorize-follow?acct={uri}` }; if (ctx.accepts(jrd, xrd) === xrd) { ctx.body = XRD( { element: 'Subject', value: subject }, { element: 'Link', attributes: self }, { element: 'Link', attributes: profilePage }, { element: 'Link', attributes: subscribe }); ctx.type = xrd; } else { ctx.body = { subject, links: [self, profilePage, subscribe] }; ctx.type = jrd; } ctx.vary('Accept'); ctx.set('Cache-Control', 'public, max-age=180'); }); // Return 404 for other .well-known router.all('/.well-known/*', async ctx => { ctx.status = 404; }); export default router;