+/**
+ * Get the value of a Python object's attribute, returned as a newly
+ * allocated GSList of char *.
+ *
+ * @param[in] py_obj The object to probe.
+ * @param[in] attr Name of the attribute to retrieve.
+ * @param[out] outstrlist ptr to GSList of char * storage to be filled in.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ * The 'outstrlist' argument points to a GSList of g_malloc()ed strings
+ * upon success.
+ *
+ * @private
+ */
+SRD_PRIV int py_attr_as_strlist(PyObject *py_obj, const char *attr, GSList **outstrlist)
+{
+ PyObject *py_list;
+ Py_ssize_t i;
+ int ret;
+ char *outstr;
+
+ if (!PyObject_HasAttrString(py_obj, attr)) {
+ srd_dbg("Object has no attribute '%s'.", attr);
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!(py_list = PyObject_GetAttrString(py_obj, attr))) {
+ srd_exception_catch("Failed to get attribute '%s'", attr);
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!PyList_Check(py_list)) {
+ srd_dbg("Object is not a list.");
+ return SRD_ERR_PYTHON;
+ }
+
+ *outstrlist = NULL;
+
+ for (i = 0; i < PyList_Size(py_list); i++) {
+ ret = py_listitem_as_str(py_list, i, &outstr);
+ if (ret < 0) {
+ srd_dbg("Couldn't get item %" PY_FORMAT_SIZE_T "d.", i);
+ return SRD_ERR_PYTHON;
+ }
+ *outstrlist = g_slist_append(*outstrlist, outstr);
+ }
+
+ Py_DECREF(py_list);
+
+ return SRD_OK;
+}