Use find_library to search for openssl libs

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

diff --git a/ctypescrypto/__init__.py b/ctypescrypto/__init__.py
index d4dcf7c103374f834aea36b70f0ca0fabd3ecd72..c55ae11842d566a6e66b3e772012db690602b9ba 100644 (file)
--- a/ctypescrypto/__init__.py
+++ b/ctypescrypto/__init__.py
@@ -1,9 +1,30 @@
 """
-       Interface to some libcrypto functions
+    Interface to some libcrypto functions
 
 """
 
-from ctypes import CDLL
 
-libcrypto = CDLL("libcrypto.so.1.0.0")
+from ctypes import CDLL, c_char_p
+from ctypes.util import find_library
+import sys
+
+def config(filename=None):
+    """
+        Loads OpenSSL Config file. If none are specified, loads default
+        (compiled in) one
+    """
+    libcrypto.OPENSSL_config(filename)
+
+__all__ = ['config']
+
+if sys.platform.startswith('win'):
+    __libname__ = find_library('libeay32')
+else:
+    __libname__ = find_library('crypto')
+
+if __libname__ is None:
+    raise OSError("Cannot find OpenSSL crypto library")
+
+libcrypto = CDLL(__libname__)
+libcrypto.OPENSSL_config.argtypes = (c_char_p, )
 libcrypto.OPENSSL_add_all_algorithms_conf()