51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
;(function () {
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'use strict'
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var fs = require('fs')
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var ursa = require('ursa')
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var logger = require('../helpers/logger')
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var Pods = require('../models/pods')
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var utils = require('../helpers/utils')
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var secureMiddleware = {
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decryptBody: decryptBody
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}
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function decryptBody (req, res, next) {
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var url = req.body.signature.url
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Pods.findByUrl(url, function (err, pod) {
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if (err) {
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logger.error('Cannot get signed url in decryptBody.', { error: err })
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return res.sendStatus(500)
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}
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if (pod === null) {
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logger.error('Unknown pod %s.', url)
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return res.sendStatus(403)
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}
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logger.debug('Decrypting body from %s.', url)
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var crt = ursa.createPublicKey(pod.publicKey)
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var signature_ok = crt.hashAndVerify('sha256', new Buffer(req.body.signature.url).toString('hex'), req.body.signature.signature, 'hex')
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if (signature_ok === true) {
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var myKey = ursa.createPrivateKey(fs.readFileSync(utils.getCertDir() + 'peertube.key.pem'))
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var decryptedKey = myKey.decrypt(req.body.key, 'hex', 'utf8')
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req.body.data = JSON.parse(utils.symetricDecrypt(req.body.data, decryptedKey))
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delete req.body.key
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} else {
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logger.error('Signature is not okay in decryptBody for %s.', req.body.signature.url)
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return res.sendStatus(403)
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}
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next()
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})
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}
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// ---------------------------------------------------------------------------
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module.exports = secureMiddleware
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})()
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