title: Accessing Microsoft Graph API without using login page
body: <p>I would like to access a user's one drive to upload a document or retrieve a document using Graph API.
  I've seen multiple examples over the net which requires using the standard login page for the user to login. You need to get the authorization code from the login page and then use it to get a token, which finally can be used to access a resource like drive.</p>
  
  <p>Am looking for a way to do this without going through the login page. I can have my own login page where I can request user to login.</p>
  
  <p>In short, I want to access drive resource of Graph API using a REST client like Postman (right from authorization to accessing the resource). Is this possible?</p>