From: Uwe Hermann <redacted>
Date: Sun, 4 May 2014 21:46:21 +0000 (+0200)
Subject: Only load and use PDs of API version 2.
X-Git-Tag: libsigrokdecode-0.3.0~6
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=5c0c9cb3a78be20d98f81cff1405bbf2c927384e;p=libsigrokdecode.git

Only load and use PDs of API version 2.

Decoders that implement any other PD API version are per definition not
compatible and cannot work with this library version.
---

diff --git a/decoder.c b/decoder.c
index ff6e7ac..71e9122 100644
--- a/decoder.c
+++ b/decoder.c
@@ -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 "