WPS: Drop subscription if it does not have any valid callback address

diff --git a/src/wps/wps_upnp.c b/src/wps/wps_upnp.c
index 29806ec..9108caa 100644 (file)
--- a/src/wps/wps_upnp.c
+++ b/src/wps/wps_upnp.c
@@ -692,6 +692,13 @@ struct subscription * subscription_start(struct upnp_wps_device_sm *sm,
        s->timeout_time = expire;
        uuid_make(s->uuid);
        subscr_addr_list_create(s, callback_urls);
+       if (dl_list_empty(&s->addr_list)) {
+               wpa_printf(MSG_DEBUG, "WPS UPnP: No valid callback URLs in "
+                          "'%s' - drop subscription", callback_urls);
+               subscription_destroy(s);
+               return NULL;
+       }
+
        /* Add to end of list, since it has the highest expiration time */
        dl_list_add_tail(&sm->subscriptions, &s->list);
        /* Queue up immediate event message (our last event)