ctypescrypto/__init__.py

   1 """
   2     Interface to some libcrypto functions
   3
   4 """
   5
   6
   7 from ctypes import CDLL, c_char_p, c_void_p, c_long,c_uint64
   8 from ctypes.util import find_library
   9 import sys
  10 global strings_loaded
  11
  12 def config(filename=None):
  13     """
  14         Loads OpenSSL Config file. If none are specified, loads default
  15         (compiled in) one
  16     """
  17     libcrypto.OPENSSL_config(filename)
  18
  19 __all__ = ['config']
  20
  21 if sys.platform.startswith('win'):
  22     __libname__ = find_library('libeay32')
  23 else:
  24     __libname__ = find_library('crypto')
  25
  26 if __libname__ is None:
  27     raise OSError("Cannot find OpenSSL crypto library")
  28
  29 #__libname__ = "/usr/local/ssl/lib/libcrypto.so.1.1"
  30
  31 libcrypto = CDLL(__libname__)
  32 libcrypto.OPENSSL_config.argtypes = (c_char_p, )
  33
  34 if hasattr(libcrypto,'OPENSSL_init_crypto'):
  35     libcrypto.OPENSSL_init_crypto.argtypes = (c_uint64,c_void_p)
  36     libcrypto.OPENSSL_init_crypto(2+4+8+0x40,None)
  37     strings_loaded = True
  38 else:
  39     libcrypto.OPENSSL_add_all_algorithms_conf()
  40     strings_loaded = False