Purpose of the 'marstore' package

marstore stands for m365, authentication, redis, and (redis)-store. This package helps business developers authenticate their users against M365 (business and university) accounts. This package helps with authenticating M365 / Entra services in the Go language.

Developers interested in standard Microsoft online authentication or Azure accounts can try the Goth package: https://github.com/markbates/goth

Technical documentation

Details can be found here: https://pkg.go.dev/github.com/jeannot-muller/marstore#pkg-overview

Prerequisites

• A working Redis server for both development and production (required).

• Go-Chi router (recommended).

• A working application in a Microsoft Tenant (required).

• The credentials for that app and properly set URLs for callbacks and logout functionality (required).

• A working internet connection and open firewalls to ensure Microsoft authentication services can be reached.

Participation

Feel free to fork the repo, suggest changes, or raise issues. Please use the original GitHub repository to do so.

How-Tos

Use of the library in your own code

Microsoft OAuth authentication workflow follows a logical and simple path:

1. First, the user needs to log in. The example code here doesn't show a login button, as everyone will follow their own logic. But you can just enter the login path manually into your app.

2. We need a '/login' handler (or any other path you specify) which will forward the request to Microsoft for authentication.

3. Microsoft will call back (with a token) the URL you specified in the properties of the application in your tenant and reflected 1:1 in the configuration structure of your app.

4. The library will store the token and the User structure from Microsoft in a Redis store in the background and write a secure cookie in the browser of the user who made the request.

Installing a Redis Server Locally or in Production

This page https://redis.io/docs/latest/get-started/ provides details on how to install the free community edition of Redis on either your development or production system. Overall, this is a straightforward process. Redis Insight is a small desktop app that can help you monitor and check your Redis installation.

Configuring a Microsoft Application to Get the Necessary Credentials for the Package

The following page https://learn.microsoft.com/en-us/entra/identity-platform/quickstart-register-app outlines the steps to register an application in your Microsoft tenant and obtain the necessary credentials for this package to work.

Official page

https://jeannot-muller.com/m365-entra-authentication-with-go