OIDs: Add dotted_form and byte_form properties

This introduces two new properties, dotted_form, for querying
the dotted form of the OID, and byte_form, for querying the
raw OID encoding. By making __bytes__ and __hash__ rely on byte_form,
infinite recursion is prevented when deriving a subclass that
overrides __bytes__.

Signed-off-by: Alexander Scheel <[email protected]>

Author: cipherboy

gssapi/raw/oids.pyx

@@ -156,9 +156,12 @@ cdef class OID:
             pos += 1
         return decoded
 
+    @property
+    def dotted_form(self):
+        return '.'.join(str(x) for x in self._decode_asn1ber())
+
     def __repr__(self):
-        dotted_oid = '.'.join(str(x) for x in self._decode_asn1ber())
-        return "<OID {0}>".format(dotted_oid)
+        return "<OID {0}>".format(self.dotted_form)
 
     def __hash__(self):
         return hash(self.__bytes__())