From: Victor Wagner <vitus@wagner.pp.ru>
Date: Mon, 20 Jun 2016 14:01:30 +0000 (+0300)
Subject: Check for CMS parsing error and don't pass None to CMS_get0_type. Fixes #3
X-Git-Url: https://www.wagner.pp.ru/gitweb/?p=oss%2Fctypescrypto.git;a=commitdiff_plain;h=13e7cc155149cf6e7c3789955e2d48be0a42cc26

Check for CMS parsing error and don't pass None to CMS_get0_type. Fixes #3
---

diff --git a/ctypescrypto/cms.py b/ctypescrypto/cms.py
index 1e53387..685d52b 100644
--- a/ctypescrypto/cms.py
+++ b/ctypescrypto/cms.py
@@ -59,6 +59,8 @@ def CMS(data, format="PEM"):
         ptr = libcrypto.PEM_read_bio_CMS(bio.bio, None, None, None)
     else:
         ptr = libcrypto.d2i_CMS_bio(bio.bio, None)
+    if ptr is None:
+        raise CMSError("Error parsing CMS data")
     typeoid = Oid(libcrypto.OBJ_obj2nid(libcrypto.CMS_get0_type(ptr)))
     if typeoid.shortname() == "pkcs7-signedData":
         return SignedData(ptr)