ctypescrypto/oid.py

   1 """
   2  Interface to OpenSSL object identifier database
   3 """
   4 from ctypescrypto import libcrypto
   5 class Oid:
   6         def __init__(self,value):
   7                 if type(value) == type(""):
   8                         self.nid=libcrypto.OBJ_txt2nid(value)
   9                         if self.nid==0:
  10                                 raise LibCryptoError("Cannot find object %s in the
  11                                 database"%(value))
  12                 elif type(value) == type(0):
  13                         self.nid=value
  14                 else:
  15                         raise TypeError("Cannot convert this type to object identifier")
  16         def __cmp__(self,other):
  17                 return self.nid-other.nid
  18         def __str__(self):
  19                 return self.dotted()
  20         def shorttname(self):
  21                 return libcrypto.OBJ_nid2sn(self.nid)
  22         def longname(self):
  23                 return  libcrypto.OBJ_nid2ln(self.nid)
  24         def dotted(self)
  25                 obj=libcrypto.OBJ_nid2obj(self.nid)
  26                 buf=create_string_buffer(256)
  27                 libcrypto.OBJ_obj2txt(buf,256,obj,1)
  28                 return buf.value
  29