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1 | import 'express-validator' | |
2 | import * as express from 'express' | |
3 | ||
4 | import { database as db } from '../initializers' | |
5 | import { | |
6 | logger, | |
7 | checkSignature as peertubeCryptoCheckSignature | |
8 | } from '../helpers' | |
9 | import { PodSignature } from '../../shared' | |
10 | ||
11 | function checkSignature (req: express.Request, res: express.Response, next: express.NextFunction) { | |
12 | const signatureObject: PodSignature = req.body.signature | |
13 | const host = signatureObject.host | |
14 | ||
15 | db.Pod.loadByHost(host) | |
16 | .then(pod => { | |
17 | if (pod === null) { | |
18 | logger.error('Unknown pod %s.', host) | |
19 | return res.sendStatus(403) | |
20 | } | |
21 | ||
22 | logger.debug('Checking signature from %s.', host) | |
23 | ||
24 | let signatureShouldBe | |
25 | // If there is data in the body the sender used it for its signature | |
26 | // If there is no data we just use its host as signature | |
27 | if (req.body.data) { | |
28 | signatureShouldBe = req.body.data | |
29 | } else { | |
30 | signatureShouldBe = host | |
31 | } | |
32 | ||
33 | const signatureOk = peertubeCryptoCheckSignature(pod.publicKey, signatureShouldBe, signatureObject.signature) | |
34 | ||
35 | if (signatureOk === true) { | |
36 | res.locals.secure = { | |
37 | pod | |
38 | } | |
39 | ||
40 | return next() | |
41 | } | |
42 | ||
43 | logger.error('Signature is not okay in body for %s.', signatureObject.host) | |
44 | return res.sendStatus(403) | |
45 | }) | |
46 | .catch(err => { | |
47 | logger.error('Cannot get signed host in body.', { error: err.stack, signature: signatureObject.signature }) | |
48 | return res.sendStatus(500) | |
49 | }) | |
50 | } | |
51 | ||
52 | // --------------------------------------------------------------------------- | |
53 | ||
54 | export { | |
55 | checkSignature | |
56 | } |