From 3622d54cf2abcc7df8313b7f850422e7b5b0a833 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20P=C3=A9ters?= <fpeters@entrouvert.com>
Date: Mon, 12 Feb 2018 14:31:54 +0100
Subject: [PATCH] don't crash on calls missing a next_url info

---
 src/authentic2_gnm/templatetags/gnm.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/authentic2_gnm/templatetags/gnm.py b/src/authentic2_gnm/templatetags/gnm.py
index 54b89c3..7887c33 100644
--- a/src/authentic2_gnm/templatetags/gnm.py
+++ b/src/authentic2_gnm/templatetags/gnm.py
@@ -35,6 +35,8 @@ def is_coming_for(request):
                     '{urn:oasis:names:tc:SAML:2.0:protocol}Extensions/{https://www.entrouvert.com/}next_url')[0].text
         except (KeyError, IndexError):
             return 'unknown'
+    if not next_url:
+        return 'unknown'
     target_path = urlparse.urlparse(next_url).path
     for prefix in ('manage', 'admin', 'backoffice'):
         if target_path.startswith('/%s/' % prefix):