openuriportal: Detect if the interface isn't there

Check the portal version number before trying to use
it. Most importantly, this will detect the case where
the interface isn't supported at all, since the proxy
will report a version of 0 in that case.

Fixes: #5733

diff --git a/gtk/gtkopenuriportal.c b/gtk/gtkopenuriportal.c
index 10001cacf4d37c96bf138f8872dddee87cecfcfe..1bec7a1cb0b951e2048998954b043846573796df 100644 (file)
--- a/gtk/gtkopenuriportal.c
+++ b/gtk/gtkopenuriportal.c
@@ -67,6 +67,12 @@ init_openuri_portal (void)
               g_error_free (error);
             }
 
+          if (gtk_xdp_open_uri_get_version (openuri) < 3)
+            {
+              g_warning ("Not a supported version of the OpenURI portal: %u", gtk_xdp_open_uri_get_version (openuri));
+              g_clear_object (&openuri);
+            }
+
           g_object_unref (connection);
         }
       else