open-api-aurum-connector2/functions/login.js

Module to connect to the OPEN API Aurum Core

const { module_name, configurations_key } = require("../utils/Constants.js");
const { logger } = require("../utils/Logger.js");
const CryptoJS = require("crypto-js");

const cryptoAESauth = (form) => {
  logger.info(`module-hub-aurum-core-connector :: cryptoAESauth "${module_name}" ...`);
  const config = global[configurations_key];

  let username = form.username;
  let plaintextPassword = form.password;
  let tenant_key = config.authentication.tenant_key;
  const rawKey = username + ":" + tenant_key;
  logger.info(`module-hub-aurum-core-connector :: rawKey: ${rawKey}`);

  // Setting key
  var pwhash = CryptoJS.SHA1(CryptoJS.enc.Utf8.parse(rawKey));
  var key = CryptoJS.enc.Hex.parse(pwhash.toString(CryptoJS.enc.Hex).substr(0, 32));

  // Setting AES encryption
  var encrypted = CryptoJS.AES.encrypt(plaintextPassword, key, {
    mode: CryptoJS.mode.ECB,
    padding: CryptoJS.pad.Pkcs7,
  });
  logger.info(`module-hub-aurum-core-connector :: Encrypted: ${encrypted}`);
  return encrypted;
};

const login = async (form) => {
  try {
    //login
    logger.info(`module-hub-aurum-core-connector :: login "${module_name}" ...`);

    const config = global[configurations_key];
    let endpoint = config?.authentication?.endpoint || "";
    logger.info(`module-hub-aurum-core-connector :: Logging in to endpoint: ${endpoint}`);

    //if form has username and password, encrypt password, and username add loginTenant

    if (form.username && form.password) {
      form.password = cryptoAESauth(form).toString();
      form.username = form.username + config.authentication.loginTenant;
    }

    logger.info(`module-hub-aurum-core-connector :: Form: ${JSON.stringify(form)}`);

    logger.info(`module-hub-aurum-core-connector :: Authorization: Basic ${Buffer.from(config.authentication.client_id + ":" + config.authentication.client_secret).toString("base64")}`);
    //INVOKE ENDPOINT, POST, headers: authorization, body: x-www-form-urlencoded (form)
    const response = await fetch(endpoint, {
      method: "POST",
      headers: {
        "Content-Type": "application/x-www-form-urlencoded",
        Authorization: "Basic " + Buffer.from(config.authentication.client_id + ":" + config.authentication.client_secret).toString("base64"),
      },
      //add body urlencoded
      body: new URLSearchParams(form),
    });

    //PARSE RESPONSE
    const responseJson = await response.json();
    logger.info(`module-hub-aurum-core-connector :: Response: ${JSON.stringify(responseJson)}`);

    //RETURN RESPONSE
    return responseJson;
  } catch (error) {
    logger.error(`Error logging in "${module_name}"`, error);
    return null;
  }
};

module.exports = login;