Implemented minimal cert extension support

[oss/ctypescrypto.git] / ctypescrypto / oid.py

diff --git a/ctypescrypto/oid.py b/ctypescrypto/oid.py
index 7d4fc21439206c0d196239755f6a2874ea9c9a4c..6941ce4b399b6b353026dfa99aac02238b656e5e 100644 (file)
--- a/ctypescrypto/oid.py
+++ b/ctypescrypto/oid.py
@@ -12,7 +12,7 @@ from ctypes import c_char_p, c_void_p, c_int, create_string_buffer
 
 __all__ = ['Oid','create','cleanup']
 
-class Oid:
+class Oid(object):
        """
                Represents an OID. It can be consturucted by textual
                representation like Oid("commonName") or Oid("CN"),
@@ -58,11 +58,25 @@ class Oid:
                " Returns logn name if any "
                return  libcrypto.OBJ_nid2ln(self.nid)
        def dotted(self):
-               " Returns dotted-decimal reperesntation "
+               " Returns dotted-decimal reperesentation "
                obj=libcrypto.OBJ_nid2obj(self.nid)
                buf=create_string_buffer(256)
                libcrypto.OBJ_obj2txt(buf,256,obj,1)
                return buf.value
+       @staticmethod
+       def fromobj(obj):
+               """
+               Creates an OID object from the pointer to ASN1_OBJECT c structure.
+               Strictly for internal use
+               """
+               nid=libcrypto.OBJ_obj2nid(obj)
+               if nid==0:
+                       buf=create_string_buffer(80)
+                       l=libcrypto.OBJ_obj2txt(buf,80,obj,1)
+                       oid=create(buf[0:l],buf[0:l],buf[0:l])
+               else:
+                       oid=Oid(nid)
+               return oid
 
 def create(dotted,shortname,longname):
        """