Re: Getting local subnet mask

• Subject: Re: Getting local subnet mask
• From: Nathan Duran <email@hidden>
• Date: Thu, 28 Feb 2008 18:55:23 -0800
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On Feb 28, 2008, at 4:54 PM, Hamish Allan wrote:

Preferably in cross-platform Python, but beggars can't be choosers :)

Or try:

---
import os, re

iffinder    = re.compile(r'^(?P<interface>\S+):')
maskfinder  = re.compile(r'netmask\s(?P<mask>0x\S{8})')
masks       = {}
curif       = None

for line in os.popen("ifconfig -a"):

    match = iffinder.search(line)

    if match:
        curif = match.group('interface')
        continue

    match = maskfinder.search(line)

    if match and curif:
        masks[curif] = match.group('mask')
        curif = None
        continue

print masks
---

Sample output:
{'en0': '0xffffff00', 'lo0': '0xff000000'}

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