From 5d9ac817b2fdd54d0078d8392dd6c1cd5b5c1abf Mon Sep 17 00:00:00 2001
From: Antoine Nguyen <tonio@ngyn.org>
Date: Mon, 17 Feb 2020 15:52:32 +0100
Subject: [PATCH] Allow login with username instead of email for LDAP.

see #1798
---
 modoboa/lib/authbackends.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/modoboa/lib/authbackends.py b/modoboa/lib/authbackends.py
index 87bfd676d..5d01859d2 100644
--- a/modoboa/lib/authbackends.py
+++ b/modoboa/lib/authbackends.py
@@ -87,7 +87,15 @@ try:
             if group == "SimpleUsers":
                 lpart, domain = split_mailbox(username)
                 if domain is None:
-                    return None
+                    # Try to find associated email
+                    email = None
+                    for attr in ['mail', 'userPrincipalName']:
+                        if attr in ldap_user.attrs:
+                            email = ldap_user.attrs[attr][0]
+                            break
+                    if email is None:
+                        return None
+                    username = email
             user, created = User.objects.get_or_create(
                 username__iexact=username,
                 defaults={