struct psensor *s;
char *eid, *url;
- oid = json_object_object_get(o, "id");
- oname = json_object_object_get(o, "name");
- otype = json_object_object_get(o, "type");
+ json_object_object_get_ex(o, "id", &oid);
+ json_object_object_get_ex(o, "name", &oname);
+ json_object_object_get_ex(o, "type", &otype);
eid = url_encode(json_object_get_string(oid));
url = malloc(strlen(sensors_url) + 1 + strlen(eid) + 1);