X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=blobdiff_plain;f=decoder.c;h=71e9122181324fad0325314ddbf78eb75f2fc1a6;hp=79ba8ef9db65344118b94a98b5b56299acfbd251;hb=95e2b2f92b144e1b0edf29819a8585dbbc00f169;hpb=f6527cc4f7625eb5283eee5392312ad5df70e0f3

diff --git a/decoder.c b/decoder.c
index 79ba8ef..71e9122 100644
--- a/decoder.c
+++ b/decoder.c
@@ -43,11 +43,11 @@
 static GSList *pd_list = NULL;
 
 /* srd.c */
-extern GSList *searchpaths;
+extern SRD_PRIV GSList *searchpaths;
 
 /* session.c */
-extern GSList *sessions;
-extern int max_session_id;
+extern SRD_PRIV GSList *sessions;
+extern SRD_PRIV int max_session_id;
 
 /* module_sigrokdecode.c */
 extern SRD_PRIV PyObject *mod_sigrokdecode;
@@ -70,7 +70,7 @@ static gboolean srd_check_init(void)
  *
  * @return List of decoders, NULL if none are supported or loaded.
  *
- * @since 0.1.0 (but the API changed in 0.2.0)
+ * @since 0.2.0
  */
 SRD_API const GSList *srd_decoder_list(void)
 {
@@ -366,6 +366,17 @@ SRD_API int srd_decoder_load(const char *module_name)
 	}
 	Py_CLEAR(py_basedec);
 
+	/*
+	 * Check that thіs decoder has the correct PD API version.
+	 * PDs of different API versions are incompatible and cannot work.
+	 */
+	py_long = PyObject_GetAttrString(d->py_dec, "api_version");
+	if (PyLong_AsLong(py_long) != 2) {
+		srd_err("Only PDs of API version 2 are supported.");
+		goto err_out;
+	}
+	Py_CLEAR(py_long);
+
 	/* Check for a proper start() method. */
 	if (!PyObject_HasAttrString(d->py_dec, "start")) {
 		srd_err("Protocol decoder %s has no start() method Decoder "