Handle a specific exception in the auth process

feudal/backend/auth/v1/views/webpage.py

@@ -9,6 +9,7 @@ from django.shortcuts import redirect
 from django.views import View
 from oic import rndstr
 from oic.oic.message import AuthorizationResponse
+from oic.oauth2.exception import HttpError
 from rest_framework import generics, views
 from rest_framework.permissions import AllowAny
 from rest_framework.response import Response
@@ -31,7 +32,6 @@ def select_oidc_config(request):
     issuer_uri_urlenc = request.GET.get('idp', None)
     idp_id = request.COOKIES.get(IDP_COOKIE_NAME, None)
 
-
     # IdP selection using the 'idp' url parameter
     try:
         if issuer_uri_urlenc is not None:
@@ -109,20 +109,29 @@ class AuthCallback(View):
             if not state == aresp['state']:
                 raise AuthException('AuthCallback: States do not match')
 
-            ac_token_response = (
-                oidc_client.do_access_token_request(
-                    state=state,
-                    request_args={
-                        'code': aresp['code']
-                    },
+            ac_token_response = None
+            try:
+                ac_token_response = (
+                    oidc_client.do_access_token_request(
+                        state=state,
+                        request_args={
+                            'code': aresp['code']
+                        },
+                    )
                 )
-            )
+            except HttpError as exception:
+                # this exception is throw
+                LOGGER.error('AuthCallback: Access Token Request: %s', exception)
+
+                # the error is deleted from the session when the state is delivered
+                request.session['error'] = 'Server Communication Error'
+                return redirect('/')
 
             # TODO retry in the future
-            #pyoidc_userinfo = oidc_client.do_user_info_request(
-            #    state=aresp["state"],
-            #)
-            #LOGGER.debug("pyoidc: %s", pyoidc_userinfo)
+            # pyoidc_userinfo = oidc_client.do_user_info_request(
+            #     state=aresp["state"],
+            # )
+            # LOGGER.debug("pyoidc: %s", pyoidc_userinfo)
 
             user = authenticate(
                 request,