sources/saml: cleanup SLO Implementation

passbook/sources/saml/templates/saml/sp/sso_single_logout.html

@@ -1,19 +0,0 @@
-{% extends "saml/sp/base.html" %}
-
-{% block content %}
-You are now logged out of this Service Provider.<br />
-{% if idp_logout_url %}
-You are still logged into your Identity Provider.
-You should logout of your Identity Provider here:<br />
-<a href="{{ idp_logout_url }}">{{ idp_logout_url }}</a>
-{#XXX: Maybe this should happen as a redirect, rather than as javascript. #}
-{% if autosubmit %}
-<script language="javascript">
-<!--
-/* Automatically submit the form. */
-document.location.href = '{{ idp_logout_url }}';
-//-->
-</script>
-{% endif %}
-{% endif %}
-{% endblock content %}

passbook/sources/saml/views.py

@@ -90,17 +90,12 @@ class SLOView(LoginRequiredMixin, View):
     """Single-Logout-View"""
 
     def dispatch(self, request: HttpRequest, source_slug: str) -> HttpResponse:
-        """Replies with an XHTML SSO Request."""
-        # TODO: Replace with flows
+        """Log user out and redirect them to the IdP's SLO URL."""
         source: SAMLSource = get_object_or_404(SAMLSource, slug=source_slug)
         if not source.enabled:
             raise Http404
         logout(request)
-        return render(
-            request,
-            "saml/sp/sso_single_logout.html",
-            {"idp_logout_url": source.slo_url},
-        )
+        return redirect(source.slo_url)
 
 
 class MetadataView(View):