146 lines
3.8 KiB
TypeScript
146 lines
3.8 KiB
TypeScript
import * as Router from '@koa/router';
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import config from '../config';
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import parseAcct from '../misc/acct/parse';
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import Acct from '../misc/acct/type';
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import { links } from './nodeinfo';
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import { escapeAttribute, escapeValue } from '../prelude/xml';
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import { Users } from '../models';
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import { User } from '../models/entities/user';
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// Init router
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const router = new Router();
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const XRD = (...x: { element: string, value?: string, attributes?: Record<string, string> }[]) =>
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`<?xml version="1.0" encoding="UTF-8"?><XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">${x.map(({ element, value, attributes }) =>
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`<${
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Object.entries(typeof attributes === 'object' && attributes || {}).reduce((a, [k, v]) => `${a} ${k}="${escapeAttribute(v)}"`, element)
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}${
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typeof value === 'string' ? `>${escapeValue(value)}</${element}` : '/'
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}>`).reduce((a, c) => a + c, '')}</XRD>`;
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const allPath = '/.well-known/*';
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const webFingerPath = '/.well-known/webfinger';
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const jrd = 'application/jrd+json';
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const xrd = 'application/xrd+xml';
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router.use(allPath, async (ctx, next) => {
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ctx.set({
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'Access-Control-Allow-Headers': 'Accept',
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'Access-Control-Allow-Methods': 'GET, OPTIONS',
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'Access-Control-Allow-Origin': '*',
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'Access-Control-Expose-Headers': 'Vary',
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});
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await next();
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});
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router.options(allPath, async ctx => {
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ctx.status = 204;
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});
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router.get('/.well-known/host-meta', async ctx => {
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ctx.set('Content-Type', xrd);
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ctx.body = XRD({ element: 'Link', attributes: {
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type: xrd,
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template: `${config.url}${webFingerPath}?resource={uri}`
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}});
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});
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router.get('/.well-known/host-meta.json', async ctx => {
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ctx.set('Content-Type', jrd);
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ctx.body = {
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links: [{
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rel: 'lrdd',
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type: jrd,
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template: `${config.url}${webFingerPath}?resource={uri}`
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}]
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};
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});
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router.get('/.well-known/nodeinfo', async ctx => {
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ctx.body = { links };
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});
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router.get(webFingerPath, async ctx => {
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const fromId = (id: User['id']): Record<string, any> => ({
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id,
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host: null,
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isSuspended: false
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});
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const generateQuery = (resource: string) =>
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resource.startsWith(`${config.url.toLowerCase()}/users/`) ?
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fromId(resource.split('/').pop()!) :
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fromAcct(parseAcct(
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resource.startsWith(`${config.url.toLowerCase()}/@`) ? resource.split('/').pop()! :
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resource.startsWith('acct:') ? resource.slice('acct:'.length) :
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resource));
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const fromAcct = (acct: Acct): Record<string, any> | number =>
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!acct.host || acct.host === config.host.toLowerCase() ? {
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usernameLower: acct.username,
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host: null,
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isSuspended: false
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} : 422;
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if (typeof ctx.query.resource !== 'string') {
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ctx.status = 400;
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return;
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}
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const query = generateQuery(ctx.query.resource.toLowerCase());
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if (typeof query === 'number') {
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ctx.status = query;
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return;
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}
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const user = await Users.findOne(query);
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if (user == null) {
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ctx.status = 404;
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return;
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}
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const subject = `acct:${user.username}@${config.host}`;
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const self = {
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rel: 'self',
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type: 'application/activity+json',
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href: `${config.url}/users/${user.id}`
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};
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const profilePage = {
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rel: 'http://webfinger.net/rel/profile-page',
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type: 'text/html',
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href: `${config.url}/@${user.username}`
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};
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const subscribe = {
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rel: 'http://ostatus.org/schema/1.0/subscribe',
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template: `${config.url}/authorize-follow?acct={uri}`
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};
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if (ctx.accepts(jrd, xrd) === xrd) {
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ctx.body = XRD(
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{ element: 'Subject', value: subject },
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{ element: 'Link', attributes: self },
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{ element: 'Link', attributes: profilePage },
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{ element: 'Link', attributes: subscribe });
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ctx.type = xrd;
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} else {
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ctx.body = {
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subject,
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links: [self, profilePage, subscribe]
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};
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ctx.type = jrd;
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}
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ctx.vary('Accept');
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ctx.set('Cache-Control', 'public, max-age=180');
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});
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// Return 404 for other .well-known
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router.all(allPath, async ctx => {
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ctx.status = 404;
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});
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export default router;
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