Fix more corner-cases of LDAP auth errors

db.py

@@ -121,11 +121,12 @@ if 'LDAP_HOST' in config:
 		user = LDAP_USERRE.sub(r'', user.lower())
 		try:
 			conn = ldap3.Connection(config['LDAP_HOST'], 'uid=%s,ou=users,dc=fsmpi,dc=rwth-aachen,dc=de'%user, password, auto_bind=True)
+			groups = []
 			if conn.search("ou=groups,dc=fsmpi,dc=rwth-aachen,dc=de", "(&(cn=*)(memberUid=%s))"%user, attributes=['cn']):
 				groups = [e['attributes']['cn'][0] for e in conn.response]
 			conn.unbind()
 			return user, groups
-		except ldap3.core.exceptions.LDAPBindError:
+		except ldap3.core.exceptions.LDAPExceptionError:
 			return None, []
 
 	def ldapget(user):