update enumip for Python3 and 64 bit

vendortools/enumip.py

@@ -1,6 +1,7 @@
 import socket
 import struct
 import array
+import sys
 
 IOCTL_SIOCGIFCONF = 0x8912
 
@@ -50,8 +51,10 @@ IOCTL_SIOCGIFCONF = 0x8912
 def enumIpUnix():
     import fcntl
 
-    inbytes = 128 * 32   # Maximum 128 interfaces
-    ifreq = array.array('B', '\0' * inbytes)
+    struct_size = 40 if (sys.maxsize > 2**32) else 32
+
+    inbytes = 128 * struct_size   # Maximum 128 interfaces
+    ifreq = array.array('B', b'\0' * inbytes)
 
     ifconf = struct.pack('iL', inbytes, ifreq.buffer_info()[0])
 
@@ -60,6 +63,8 @@ def enumIpUnix():
 
     outbytes = struct.unpack('iL', ifconf)[0]
 
-    iplist = [socket.inet_ntoa(ifreq[i+20:i+24]) for i in range(0, outbytes, 32)] 
+    iplist = [socket.inet_ntoa(ifreq[i+20:i+24]) for i in range(0,
+                                                                outbytes,
+                                                                struct_size)]
 
     return [ip for ip in iplist if ip != '127.0.0.1']