1 files changed, 57 insertions, 0 deletions

diff --git a/middlewares/index.js b/middlewares/index.js
new file mode 100644
index 000000000..c8139075a
--- /dev/null
+++ b/middlewares/index.js
@@ -0,0 +1,57 @@
+;(function () {
+  'use strict'
+
+  var ursa = require('ursa')
+  var fs = require('fs')
+
+  var logger = require('../src/logger')
+  var utils = require('../src/utils')
+  var PodsDB = require('../src/database').PodsDB
+
+  var middleware = {}
+
+  middleware.cache = function (cache) {
+    return function (req, res, next) {
+      // If we want explicitly a cache
+      // Or if we don't specify if we want a cache or no and we are in production
+      if (cache === true || (cache !== false && process.env.NODE_ENV === 'production')) {
+        res.setHeader('Cache-Control', 'public')
+      } else {
+        res.setHeader('Cache-Control', 'no-cache, no-store, max-age=0, must-revalidate')
+      }
+
+      next()
+    }
+  }
+
+  middleware.decryptBody = function (req, res, next) {
+    logger.debug('Decrypting body.')
+
+    PodsDB.findOne({ url: req.body.signature.url }, function (err, pod) {
+      if (err) {
+        logger.error('Cannot get signed url in decryptBody.', { error: err })
+        res.sendStatus(500)
+      }
+
+      logger.debug('Found one pod which could send the message.', { pod: pod.publicKey, url: req.body.signature.url })
+
+      var crt = ursa.createPublicKey(pod.publicKey)
+      var signature_ok = crt.hashAndVerify('sha256', new Buffer(req.body.signature.url).toString('hex'), req.body.signature.signature, 'hex')
+
+      if (signature_ok === true) {
+        var myKey = ursa.createPrivateKey(fs.readFileSync(utils.certDir + 'petube.key.pem'))
+        var decryptedKey = myKey.decrypt(req.body.key, 'hex', 'utf8')
+        logger.debug(decryptedKey)
+        req.body.data = JSON.parse(utils.symetricDecrypt(req.body.data, decryptedKey))
+        logger.debug('Decrypted.', { body: req.body })
+      } else {
+        logger.error('Signature is not okay in decryptBody for %s.', req.body.signature.url)
+        res.sendStatus(500)
+      }
+
+      next()
+    })
+  }
+
+  module.exports = middleware
+})()