mizzkey/src/server/activitypub.ts

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import config from '../conf';
import { extractPublic } from '../crypto_key';
import parseAcct from '../common/user/parse-acct';
import User, { ILocalAccount } from '../models/user';
const express = require('express');
const app = express();
app.get('/@:user', async (req, res, next) => {
const accepted = req.accepts(['html', 'application/activity+json', 'application/ld+json']);
if (!['application/activity+json', 'application/ld+json'].includes(accepted)) {
return next();
}
const { username, host } = parseAcct(req.params.user);
if (host !== null) {
return res.send(422);
}
const user = await User.findOne({
usernameLower: username.toLowerCase(),
host: null
});
if (user === null) {
return res.send(404);
}
const id = `${config.url}/@${user.username}`;
if (username !== user.username) {
return res.redirect(id);
}
res.json({
'@context': [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1'
],
type: 'Person',
id,
preferredUsername: user.username,
name: user.name,
summary: user.description,
icon: user.avatarId && {
type: 'Image',
url: `${config.drive_url}/${user.avatarId}`
},
image: user.bannerId && {
type: 'Image',
url: `${config.drive_url}/${user.bannerId}`
},
publicKey: {
type: 'Key',
owner: id,
publicKeyPem: extractPublic((user.account as ILocalAccount).keypair)
}
});
});
export default app;