pauth | Container Cloud Unified Login Center

I'm working on a node.js/express app to check details on a user's account to determine if they meet criteria to login to a resource. Originally, all of the code was in a single app.js file, but now I'm trying to break it up into modules so it can be used for multiple locations and resources, each with their own specific criteria. The app works by receiving a username and password in a querystring, which I parse into it's respective pieces. The username and password are then formatted into an API call to check that the credentials are valid. If they are valid, the script then retrieves more information from their account, and is supposed to check the returned values against the requirements for gaining access to the resource.

I've managed to set up directories and routes that correctly direct the request to the right script. I'm having trouble converting my API calls into utilities that can be used in multiple scripts (making the calls doesn't require changing the utility, but each script has different criteria to compared the returned values against).

I'm running into two problems. First, I have multiple functions that need to run synchronously, and they're being called before the previous calls complete, so the values they need to make their calls are still undefined when they start. Second, I can't quite figure out how to pass the returned value from the utility back to the login script.

Here's the contents of the login module: