connect to exchange server

imap-over-tls-example.py

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+#!/usr/bin/env python3
+import imaplib
+import msal
+import pprint
+
+conf = {
+    "authority": "https://login.microsoftonline.com/47f02128-acf0-47a7-a3bf-27a3619d4a4f",
+    "client_id": "4fdf2634-a260-4576-a442-684998f0187b", #AppID
+    "scope": ['https://outlook.office365.com/.default'],
+    "secret": "dZD8Q~GmG_PFi.t_uRiyBEzwLeMZeemQGHUFta~J", #Key-Value
+    "secret-id": "5cae3249-0fc0-43e2-bc0e-d78f41964970", #Key-ID
+}
+    
+def generate_auth_string(user, token):
+    return f"user={user}\x01auth=Bearer {token}\x01\x01"    
+
+if __name__ == "__main__":
+    app = msal.ConfidentialClientApplication(conf['client_id'], authority=conf['authority'],
+                                             client_credential=conf['secret'])
+
+    result = app.acquire_token_silent(conf['scope'], account=None)
+
+    if not result:
+        print("No suitable token in cache.  Get new one.")
+        result = app.acquire_token_for_client(scopes=conf['scope'])
+
+    if "access_token" in result:
+        print(result['token_type'])
+        pprint.pprint(result)
+    else:
+        print(result.get("error"))
+        print(result.get("error_description"))
+        print(result.get("correlation_id"))
+        
+    imap = imaplib.IMAP4('outlook.office365.com')
+    imap.starttls()
+    imap.authenticate("XOAUTH2", lambda x: generate_auth_string("polynet-dumas@entreprise-dumas.com", result['access_token']).encode("utf-8"))
+
+    # Print list of mailboxes on server
+    code, mailboxes = imap.list()
+    for mailbox in mailboxes:
+        print(mailbox.decode("utf-8"))
+    # Select mailbox
+    imap.select("INBOX")
+    # Cleanup
+    imap.close()