Regarde d'abord dans CASAccount puis dans OldCASAccount pour la connexion vieilleux

authens/backends.py

@@ -73,6 +73,14 @@ class ENSCASBackend:
             i += 1
         return radical + str(i)
 
+    def create_user(self, username, attributes):
+        """Create a CAS user, base method that can be overrided to add more
+        information.
+        """
+
+        email = attributes.get("email")
+        return UserModel.objects.create_user(username=username, email=email)
+
     def _get_or_create(self, cas_login, attributes):
         """Handles account retrieval, creation and invalidation as described above.
 
@@ -82,7 +90,6 @@ class ENSCASBackend:
         - If a matching CAS account exists, retrieve it.
         """
 
-        email = attributes.get("email")
         entrance_year = parse_entrance_year(attributes.get("homeDirectory"))
         if entrance_year is None:
             raise ENSCASError("Entrance year not available")
@@ -103,7 +110,7 @@ class ENSCASBackend:
 
             if user is None:
                 username = self.get_free_username(cas_login, attributes)
-                user = UserModel.objects.create_user(username=username, email=email)
+                user = self.create_user(username, attributes)
                 CASAccount.objects.create(
                     user=user, entrance_year=entrance_year, cas_login=cas_login
                 )
@@ -130,10 +137,16 @@ class OldCASBackend:
             return
 
         try:
-            old_cas_acc = OldCASAccount.objects.get(
-                cas_login=cas_login, entrance_year=entrance_year
-            )
-            user = old_cas_acc.user
+            try:
+                cas_acc = CASAccount.objects.get(
+                    cas_login=cas_login, entrance_year=entrance_year
+                )
+                user = cas_acc.user
+            except CASAccount.DoesNotExist:
+                old_cas_acc = OldCASAccount.objects.get(
+                    cas_login=cas_login, entrance_year=entrance_year
+                )
+                user = old_cas_acc.user
         except OldCASAccount.DoesNotExist:
             # As in Django's ModelBackend, we run the password hasher once
             # to mitigate timing attacks