1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
import { eachSeries } from 'async'
import { NextFunction, Request, RequestHandler, Response } from 'express'
import { ActivityPubSignature } from '../../shared'
import { isSignatureVerified, logger } from '../helpers'
import { ACCEPT_HEADERS, ACTIVITY_PUB } from '../initializers'
import { getOrCreateActorAndServerAndModel } from '../lib/activitypub'
import { ActorModel } from '../models/activitypub/actor'
async function checkSignature (req: Request, res: Response, next: NextFunction) {
const signatureObject: ActivityPubSignature = req.body.signature
const [ creator ] = signatureObject.creator.split('#')
logger.debug('Checking signature of actor %s...', creator)
let actor: ActorModel
try {
actor = await getOrCreateActorAndServerAndModel(creator)
} catch (err) {
logger.error('Cannot create remote actor and check signature.', err)
return res.sendStatus(403)
}
const verified = await isSignatureVerified(actor, req.body)
if (verified === false) return res.sendStatus(403)
res.locals.signature = {
actor
}
return next()
}
function executeIfActivityPub (fun: RequestHandler | RequestHandler[]) {
return (req: Request, res: Response, next: NextFunction) => {
const accepted = req.accepts(ACCEPT_HEADERS)
if (accepted === false || ACTIVITY_PUB.POTENTIAL_ACCEPT_HEADERS.indexOf(accepted) === -1) {
return next()
}
logger.debug('ActivityPub request for %s.', req.url)
if (Array.isArray(fun) === true) {
return eachSeries(fun as RequestHandler[], (f, cb) => {
f(req, res, cb)
}, next)
}
return (fun as RequestHandler)(req, res, next)
}
}
// ---------------------------------------------------------------------------
export {
checkSignature,
executeIfActivityPub
}
|
