58 lines
1.9 KiB
JavaScript
58 lines
1.9 KiB
JavaScript
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;(function () {
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'use strict'
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var ursa = require('ursa')
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var fs = require('fs')
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var logger = require('../src/logger')
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var utils = require('../src/utils')
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var PodsDB = require('../src/database').PodsDB
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var middleware = {}
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middleware.cache = function (cache) {
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return function (req, res, next) {
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// If we want explicitly a cache
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// Or if we don't specify if we want a cache or no and we are in production
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if (cache === true || (cache !== false && process.env.NODE_ENV === 'production')) {
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res.setHeader('Cache-Control', 'public')
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} else {
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res.setHeader('Cache-Control', 'no-cache, no-store, max-age=0, must-revalidate')
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}
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next()
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}
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}
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middleware.decryptBody = function (req, res, next) {
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logger.debug('Decrypting body.')
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PodsDB.findOne({ url: req.body.signature.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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res.sendStatus(500)
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}
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logger.debug('Found one pod which could send the message.', { pod: pod.publicKey, url: req.body.signature.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.certDir + 'petube.key.pem'))
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var decryptedKey = myKey.decrypt(req.body.key, 'hex', 'utf8')
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logger.debug(decryptedKey)
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req.body.data = JSON.parse(utils.symetricDecrypt(req.body.data, decryptedKey))
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logger.debug('Decrypted.', { body: req.body })
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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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res.sendStatus(500)
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}
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next()
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})
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}
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module.exports = middleware
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})()
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