caesarjs/src/server/middleware/req-decrypt-data.js

A microservice framework for node.js implementing client-server mutual certificate authentication

'use strict';
const perfy = require('perfy');

const reqDataDecrypt = (encryptor) => (req, res, next) => {

    const data = req.get('encryptor-data');
    const clientId = req.get('encryptor-client-id');

    // decrypt data
    const encryptorDecryptedData = encryptor.decrypt(data);
    const encryptorDecryptedClientId = encryptor.decrypt(clientId);

    if(encryptorDecryptedData == null)
    {
        // encryptor key is wrong - bad decryption
        res.status(500).json({error: 'encryptor key is wrong!'});
        return;
    }

    // pass to controller's req object
    req.data = encryptorDecryptedData;
    req.clientId = encryptorDecryptedClientId;

    // emit event received data
    req.caesar.events.emitReceiveData(req.data, encryptorDecryptedClientId);
    // add stats
    req.statsDb.addStat(req.path, encryptorDecryptedClientId);
    // start metrics by path
    perfy.start(req.path);
    
    next();
};

module.exports = reqDataDecrypt;