+/**
+ * Get the value of a Python list item, returned as a newly
+ * allocated char *.
+ *
+ * @param[in] py_obj The list to probe.
+ * @param[in] idx Index of the list item to retrieve.
+ * @param[out] outstr Pointer 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 string upon success.
+ *
+ * @private
+ */
+SRD_PRIV int py_listitem_as_str(PyObject *py_obj, Py_ssize_t idx,
+ char **outstr)
+{
+ PyObject *py_value;
+
+ if (!PyList_Check(py_obj)) {
+ srd_dbg("Object is not a list.");
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!(py_value = PyList_GetItem(py_obj, idx))) {
+ srd_dbg("Couldn't get list item %" PY_FORMAT_SIZE_T "d.", idx);
+ return SRD_ERR_PYTHON;
+ }
+
+ return py_str_as_str(py_value, outstr);
+}
+
+/**
+ * Get the value of a Python dictionary item, returned as a newly
+ * allocated char *.
+ *
+ * @param py_obj The dictionary to probe.
+ * @param py_key Key of the item to retrieve.
+ * @param outstr Pointer 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_pydictitem_as_str(PyObject *py_obj, PyObject *py_key,
+ char **outstr)
+{
+ PyObject *py_value;
+
+ if (!py_obj || !py_key || !outstr)
+ return SRD_ERR_ARG;
+
+ if (!PyDict_Check(py_obj)) {
+ srd_dbg("Object is not a dictionary.");
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!(py_value = PyDict_GetItem(py_obj, py_key))) {
+ srd_dbg("Dictionary has no such key.");
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!PyUnicode_Check(py_value)) {
+ srd_dbg("Dictionary value should be a string.");
+ return SRD_ERR_PYTHON;
+ }
+
+ return py_str_as_str(py_value, outstr);
+}
+
+/**
+ * Get the value of a Python dictionary item, returned as a newly
+ * allocated char *.
+ *
+ * @param py_obj The dictionary to probe.
+ * @param py_key Key of the item to retrieve.
+ * @param out TODO.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ *
+ * @private
+ */
+SRD_PRIV int py_pydictitem_as_long(PyObject *py_obj, PyObject *py_key, uint64_t *out)
+{
+ PyObject *py_value;
+
+ if (!py_obj || !py_key || !out)
+ return SRD_ERR_ARG;
+
+ if (!PyDict_Check(py_obj)) {
+ srd_dbg("Object is not a dictionary.");
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!(py_value = PyDict_GetItem(py_obj, py_key))) {
+ srd_dbg("Dictionary has no such key.");
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!PyLong_Check(py_value)) {
+ srd_dbg("Dictionary value should be a long.");
+ return SRD_ERR_PYTHON;
+ }
+
+ *out = PyLong_AsUnsignedLongLong(py_value);
+
+ return SRD_OK;
+}
+
+/**
+ * Get the value of a Python unicode string object, returned as a newly
+ * allocated char *.
+ *
+ * @param[in] py_str The unicode string object.
+ * @param[out] 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 string upon success.
+ *
+ * @private
+ */
+SRD_PRIV int py_str_as_str(PyObject *py_str, char **outstr)
+{
+ PyObject *py_bytes;
+ char *str;
+
+ if (!PyUnicode_Check(py_str)) {
+ srd_dbg("Object is not a string object.");
+ return SRD_ERR_PYTHON;
+ }
+
+ py_bytes = PyUnicode_AsUTF8String(py_str);
+ if (py_bytes) {
+ str = g_strdup(PyBytes_AsString(py_bytes));
+ Py_DECREF(py_bytes);
+ if (str) {
+ *outstr = str;
+ return SRD_OK;
+ }
+ }
+ srd_exception_catch("Failed to extract string");
+
+ return SRD_ERR_PYTHON;
+}
+
+/**
+ * Convert a Python list of unicode strings to a C string vector.
+ * On success, a pointer to a newly allocated NULL-terminated array of
+ * allocated C strings is written to @a out_strv. The caller must g_free()
+ * each string and the array itself.
+ *
+ * @param[in] py_strseq The sequence object.
+ * @param[out] out_strv Address of string vector to be filled in.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ *
+ * @private
+ */
+SRD_PRIV int py_strseq_to_char(PyObject *py_strseq, char ***out_strv)
+{
+ PyObject *py_item, *py_bytes;
+ char **strv, *str;
+ ssize_t seq_len, i;
+
+ if (!PySequence_Check(py_strseq)) {
+ srd_err("Object does not provide sequence protocol.");
+ return SRD_ERR_PYTHON;
+ }
+
+ seq_len = PySequence_Size(py_strseq);
+ if (seq_len < 0) {
+ srd_exception_catch("Failed to obtain sequence size");
+ return SRD_ERR_PYTHON;
+ }
+
+ strv = g_try_new0(char *, seq_len + 1);
+ if (!strv) {
+ srd_err("Failed to allocate result string vector.");