libsmi.py

from ctypes import *
from constants import *

#clibsmi=CDLL("libsmi.so.2.0.25")
clibsmi=CDLL("libsmi.so")
clibsmi.smiInit()
smiNode = POINTER(SmiNode)
oid = c_char_p("1.3.6.1.2.1.2.2")

#extern SmiNode *smiGetNode(SmiModule *smiModulePtr, const char *name);
clibsmi.smiGetNode.argtypes = [POINTER(SmiModule),POINTER(c_char_p)]
clibsmi.smiGetNode.restype = POINTER(SmiNode)
CFUNPROT = CFUNCTYPE(POINTER(SmiNode),POINTER(SmiModule),POINTER(c_char_p))
paramflags = (1,"smiModulePtr"),(1,"name")
SmiGetNode = CFUNPROT(("smiGetNode",clibsmi),paramflags)
sn=SmiGetNode(None,oid)
sn.contents # null pointer