checkmsuser

#!/usr/bin/env python3
# check if a given email address has a connected m365 account

import sys
import json
import logging
import requests

def main(email):
    response = {"external_idp": False, "valid_account": False}
    url = "https://login.microsoftonline.com/common/GetCredentialType"
    body = '{"Username":"%s"}' % email
    try:
        req = requests.post(url, data=body)
    except requests.exceptions.RequestException as e:
        logging.error("error: %s" % e)
        exit(1)
    if bool(req.json()["IfExistsResult"]) is False:
        response["valid_account"] = True
    if bool(req.json()["IfExistsResult"]) is True:
        response["valid_account"] = False
    if "FederationRedirectUrl" in req.json()["Credentials"]:
        response["external_idp"] = True
    return response

try:
    email = sys.argv[1]
except IndexError:
    print("usage: checkmsuser <email>")
    exit()

print(json.dumps(main(email), indent=2))