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-rw-r--r--server/middlewares/validators/oembed.ts63
1 files changed, 63 insertions, 0 deletions
diff --git a/server/middlewares/validators/oembed.ts b/server/middlewares/validators/oembed.ts
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1import { query } from 'express-validator/check'
2import * as express from 'express'
3import { join } from 'path'
4
5import { checkErrors } from './utils'
6import { CONFIG } from '../../initializers'
7import { logger } from '../../helpers'
8import { checkVideoExists, isVideoIdOrUUIDValid } from '../../helpers/custom-validators/videos'
9import { isTestInstance } from '../../helpers/core-utils'
10
11const urlShouldStartWith = CONFIG.WEBSERVER.SCHEME + '://' + join(CONFIG.WEBSERVER.HOST, 'videos', 'watch') + '/'
12const videoWatchRegex = new RegExp('([^/]+)$')
13const isURLOptions = {
14 require_host: true,
15 require_tld: true
16}
17
18// We validate 'localhost', so we don't have the top level domain
19if (isTestInstance()) {
20 isURLOptions.require_tld = false
21}
22
23const oembedValidator = [
24 query('url').isURL(isURLOptions).withMessage('Should have a valid url'),
25 query('maxwidth').optional().isInt().withMessage('Should have a valid max width'),
26 query('maxheight').optional().isInt().withMessage('Should have a valid max height'),
27 query('format').optional().isIn([ 'xml', 'json' ]).withMessage('Should have a valid format'),
28
29 (req: express.Request, res: express.Response, next: express.NextFunction) => {
30 logger.debug('Checking oembed parameters', { parameters: req.query })
31
32 checkErrors(req, res, () => {
33 if (req.query.format !== undefined && req.query.format !== 'json') {
34 return res.status(501)
35 .json({ error: 'Requested format is not implemented on server.' })
36 .end()
37 }
38
39 const startIsOk = req.query.url.startsWith(urlShouldStartWith)
40 const matches = videoWatchRegex.exec(req.query.url)
41 if (startIsOk === false || matches === null) {
42 return res.status(400)
43 .json({ error: 'Invalid url.' })
44 .end()
45 }
46
47 const videoId = matches[1]
48 if (isVideoIdOrUUIDValid(videoId) === false) {
49 return res.status(400)
50 .json({ error: 'Invalid video id.' })
51 .end()
52 }
53
54 checkVideoExists(videoId, res, next)
55 })
56 }
57]
58
59// ---------------------------------------------------------------------------
60
61export {
62 oembedValidator
63}