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9a27cdc2 C |
1 | import { eachSeries } from 'async' |
2 | import { NextFunction, Request, RequestHandler, Response } from 'express' | |
e4f97bab | 3 | import { ActivityPubSignature } from '../../shared' |
350e31d6 | 4 | import { isSignatureVerified, logger } from '../helpers' |
9a27cdc2 C |
5 | import { database as db } from '../initializers' |
6 | import { ACTIVITY_PUB } from '../initializers/constants' | |
0f91ae62 | 7 | import { fetchRemoteAccount, saveAccountAndServerIfNotExist } from '../lib/activitypub/account' |
e4f97bab C |
8 | |
9 | async function checkSignature (req: Request, res: Response, next: NextFunction) { | |
10 | const signatureObject: ActivityPubSignature = req.body.signature | |
11 | ||
12 | logger.debug('Checking signature of account %s...', signatureObject.creator) | |
13 | ||
14 | let account = await db.Account.loadByUrl(signatureObject.creator) | |
15 | ||
16 | // We don't have this account in our database, fetch it on remote | |
17 | if (!account) { | |
0f91ae62 | 18 | account = await fetchRemoteAccount(signatureObject.creator) |
e4f97bab | 19 | |
0f91ae62 | 20 | if (!account) { |
e4f97bab C |
21 | return res.sendStatus(403) |
22 | } | |
23 | ||
0f91ae62 C |
24 | // Save our new account and its server in database |
25 | await saveAccountAndServerIfNotExist(account) | |
e4f97bab C |
26 | } |
27 | ||
28 | const verified = await isSignatureVerified(account, req.body) | |
29 | if (verified === false) return res.sendStatus(403) | |
30 | ||
350e31d6 C |
31 | res.locals.signature = { |
32 | account | |
33 | } | |
e4f97bab C |
34 | |
35 | return next() | |
36 | } | |
37 | ||
350e31d6 | 38 | function executeIfActivityPub (fun: RequestHandler | RequestHandler[]) { |
e4f97bab | 39 | return (req: Request, res: Response, next: NextFunction) => { |
9a27cdc2 | 40 | if (req.header('Accept') !== ACTIVITY_PUB.ACCEPT_HEADER) { |
e4f97bab C |
41 | return next() |
42 | } | |
43 | ||
44 | if (Array.isArray(fun) === true) { | |
350e31d6 C |
45 | return eachSeries(fun as RequestHandler[], (f, cb) => { |
46 | f(req, res, cb) | |
47 | }, next) | |
e4f97bab C |
48 | } |
49 | ||
350e31d6 | 50 | return (fun as RequestHandler)(req, res, next) |
e4f97bab C |
51 | } |
52 | } | |
53 | ||
54 | // --------------------------------------------------------------------------- | |
55 | ||
56 | export { | |
57 | checkSignature, | |
58 | executeIfActivityPub | |
59 | } |