server/middlewares/secure.js

   1 'use strict'
   2
   3 const db = require('../initializers/database')
   4 const logger = require('../helpers/logger')
   5 const peertubeCrypto = require('../helpers/peertube-crypto')
   6
   7 const secureMiddleware = {
   8   checkSignature
   9 }
  10
  11 function checkSignature (req, res, next) {
  12   const host = req.body.signature.host
  13   db.Pod.loadByHost(host, function (err, pod) {
  14     if (err) {
  15       logger.error('Cannot get signed host in body.', { error: err })
  16       return res.sendStatus(500)
  17     }
  18
  19     if (pod === null) {
  20       logger.error('Unknown pod %s.', host)
  21       return res.sendStatus(403)
  22     }
  23
  24     logger.debug('Checking signature from %s.', host)
  25
  26     let signatureShouldBe
  27     if (req.body.data) {
  28       signatureShouldBe = req.body.data
  29     } else {
  30       signatureShouldBe = host
  31     }
  32
  33     const signatureOk = peertubeCrypto.checkSignature(pod.publicKey, signatureShouldBe, req.body.signature.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.', req.body.signature.host)
  44     return res.sendStatus(403)
  45   })
  46 }
  47
  48 // ---------------------------------------------------------------------------
  49
  50 module.exports = secureMiddleware