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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' |
da854ddd C |
4 | import { logger } from '../helpers/logger' |
5 | import { isSignatureVerified } from '../helpers/peertube-crypto' | |
3fd3ab2d | 6 | import { ACCEPT_HEADERS, ACTIVITY_PUB } from '../initializers' |
50d6de9c C |
7 | import { getOrCreateActorAndServerAndModel } from '../lib/activitypub' |
8 | import { ActorModel } from '../models/activitypub/actor' | |
e4f97bab C |
9 | |
10 | async function checkSignature (req: Request, res: Response, next: NextFunction) { | |
11 | const signatureObject: ActivityPubSignature = req.body.signature | |
12 | ||
e12a0092 C |
13 | const [ creator ] = signatureObject.creator.split('#') |
14 | ||
15 | logger.debug('Checking signature of actor %s...', creator) | |
e4f97bab | 16 | |
50d6de9c C |
17 | let actor: ActorModel |
18 | try { | |
e12a0092 | 19 | actor = await getOrCreateActorAndServerAndModel(creator) |
50d6de9c | 20 | } catch (err) { |
d5b7d911 | 21 | logger.error('Cannot create remote actor and check signature.', { err }) |
50d6de9c | 22 | return res.sendStatus(403) |
e4f97bab C |
23 | } |
24 | ||
50d6de9c | 25 | const verified = await isSignatureVerified(actor, req.body) |
e4f97bab C |
26 | if (verified === false) return res.sendStatus(403) |
27 | ||
350e31d6 | 28 | res.locals.signature = { |
50d6de9c | 29 | actor |
350e31d6 | 30 | } |
e4f97bab C |
31 | |
32 | return next() | |
33 | } | |
34 | ||
350e31d6 | 35 | function executeIfActivityPub (fun: RequestHandler | RequestHandler[]) { |
e4f97bab | 36 | return (req: Request, res: Response, next: NextFunction) => { |
4f491371 C |
37 | const accepted = req.accepts(ACCEPT_HEADERS) |
38 | if (accepted === false || ACTIVITY_PUB.POTENTIAL_ACCEPT_HEADERS.indexOf(accepted) === -1) { | |
e4f97bab C |
39 | return next() |
40 | } | |
41 | ||
165cdc75 C |
42 | logger.debug('ActivityPub request for %s.', req.url) |
43 | ||
e4f97bab | 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 | } |