@@ -75,5 +75,6 @@
new file mode 100644
@@ -0,0 +1,34 @@
+ * Copyright (C) 2012 Canonical
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#define __FWTS_JSON_ERR_PTR__ ((json_object*) -1)
+ * Older versions of json-c may return an error in an
+ * object as a ((json_object*)-1), where as newer
+ * versions return NULL, so check for these. Sigh.
+#define FWTS_JSON_ERROR(ptr) \
+ ( (ptr == NULL) || ((json_object*)ptr == __FWTS_JSON_ERR_PTR__) )