+ /* Check for a proper start() method. */
+ if (!PyObject_HasAttrString(d->py_dec, "start")) {
+ srd_err("Protocol decoder %s has no start() method Decoder "
+ "class.", module_name);
+ goto err_out;
+ }
+ py_method = PyObject_GetAttrString(d->py_dec, "start");
+ if (!PyFunction_Check(py_method)) {
+ srd_err("Protocol decoder %s Decoder class attribute 'start' "
+ "is not a method.", module_name);
+ goto err_out;
+ }
+ Py_CLEAR(py_method);
+
+ /* Check for a proper decode() method. */
+ if (!PyObject_HasAttrString(d->py_dec, "decode")) {
+ srd_err("Protocol decoder %s has no decode() method Decoder "
+ "class.", module_name);
+ goto err_out;
+ }
+ py_method = PyObject_GetAttrString(d->py_dec, "decode");
+ if (!PyFunction_Check(py_method)) {
+ srd_err("Protocol decoder %s Decoder class attribute 'decode' "
+ "is not a method.", module_name);
+ goto err_out;
+ }
+ Py_CLEAR(py_method);
+
+ /* If present, options must be a dictionary. */
+ if (PyObject_HasAttrString(d->py_dec, "options")) {
+ py_attr = PyObject_GetAttrString(d->py_dec, "options");
+ if (!PyDict_Check(py_attr)) {
+ srd_err("Protocol decoder %s options attribute is not "
+ "a dictionary.", d->name);
+ Py_DecRef(py_attr);
+ goto err_out;
+ }
+ Py_DecRef(py_attr);
+ }
+
+ /* Check and import required probes. */
+ if (get_probes(d, "probes", &d->probes) != SRD_OK)
+ goto err_out;
+
+ /* Check and import optional probes. */
+ if (get_probes(d, "optional_probes", &d->opt_probes) != SRD_OK)
+ goto err_out;
+
+ /*
+ * Fix order numbers for the optional probes.
+ *
+ * Example:
+ * Required probes: r1, r2, r3. Optional: o1, o2, o3, o4.
+ * 'order' fields in the d->probes list = 0, 1, 2.
+ * 'order' fields in the d->opt_probes list = 3, 4, 5, 6.
+ */
+ for (l = d->opt_probes; l; l = l->next) {
+ p = l->data;
+ p->order += g_slist_length(d->probes);
+ }
+
+ /* Store required fields in newly allocated strings. */