https://passingcuriosity.com/tags/ffi/ffi.xml Thomas Sutton me@thomas-sutton.id.au 2012-08-18T00:00:00Z https://passingcuriosity.com/2012/unexpected-day/ 2012-08-18T00:00:00Z 2012-08-18T00:00:00Z

import ctypes import ctypes.util # Open the SO libpcap_name = ctypes.util.find_library('pcap') libpcap = ctypes.CDLL(libpcap_name) # Start capturing errbuf = ctypes.create_string_buffer(256) handle = libpcap.pcal_open_live("any", 65535, 0, 0, errbuf) # Check the error errbuf.value == 'socket: Operation not permitted' # Add properties on the function # .errcheck = function # .argtypes = [...] # .restype = ... class c_timecal(ctypes.Structure): _fields = [ ("tv_sec", ctypes.c_ulong), ("tv_usec", ctypes.c_ulong), ]]]>