+/**
+ * Get the value of a Python unicode string object, returned as a newly
+ * allocated char *.
+ *
+ * @param py_str The unicode string object.
+ * @param outstr ptr to char * storage to be filled in.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ * The 'outstr' argument points to a malloc()ed string upon success.
+ *
+ * @private
+ */
+SRD_PRIV int py_str_as_str(const PyObject *py_str, char **outstr)
+{
+ PyObject *py_encstr;
+ int ret;
+ char *str;
+
+ py_encstr = NULL;
+ str = NULL;
+ ret = SRD_OK;
+
+ if (!PyUnicode_Check((PyObject *)py_str)) {
+ srd_dbg("Object is a %s, not a string object.",
+ Py_TYPE((PyObject *)py_str)->tp_name);
+ ret = SRD_ERR_PYTHON;
+ goto err_out;
+ }
+
+ if (!(py_encstr = PyUnicode_AsEncodedString((PyObject *)py_str,
+ "utf-8", NULL))) {
+ ret = SRD_ERR_PYTHON;
+ goto err_out;
+ }
+ if (!(str = PyBytes_AS_STRING(py_encstr))) {
+ ret = SRD_ERR_PYTHON;
+ goto err_out;
+ }
+
+ *outstr = g_strdup(str);
+
+err_out:
+ if (py_encstr)
+ Py_XDECREF(py_encstr);
+
+ if (PyErr_Occurred()) {
+ srd_exception_catch("string conversion failed");
+ }
+
+ return ret;
+}
+
+/**
+ * Convert a Python list of unicode strings to a NULL-terminated UTF8-encoded
+ * char * array. The caller must g_free() each string when finished.
+ *
+ * @param py_strlist The list object.
+ * @param outstr ptr to char ** storage to be filled in.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ * The 'outstr' argument points to a g_malloc()ed char** upon success.
+ *
+ * @private
+ */
+SRD_PRIV int py_strseq_to_char(const PyObject *py_strseq, char ***outstr)
+{
+ PyObject *py_str;
+ int list_len, i;
+ char **out, *str;
+
+ list_len = PySequence_Size((PyObject *)py_strseq);
+ if (!(out = g_try_malloc(sizeof(char *) * (list_len + 1)))) {
+ srd_err("Failed to g_malloc() 'out'.");
+ return SRD_ERR_MALLOC;
+ }
+ for (i = 0; i < list_len; i++) {
+ if (!(py_str = PyUnicode_AsEncodedString(
+ PySequence_GetItem((PyObject *)py_strseq, i), "utf-8", NULL)))
+ return SRD_ERR_PYTHON;
+ if (!(str = PyBytes_AS_STRING(py_str)))
+ return SRD_ERR_PYTHON;
+ out[i] = g_strdup(str);
+ }
+ out[i] = NULL;
+ *outstr = out;
+
+ return SRD_OK;
+}