script to change stored wifi password

SSID = "change me"

password = "change me"

​

import ctypes

from subprocess import PIPE, Popen

import re

import os

​

def ecmd(command):

    class disable_file_system_redirection:

        _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection

        _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection

        def __enter__(self):

            self.old_value = ctypes.c_long()

            self.success = self._disable(ctypes.byref(self.old_value))

        def __exit__(self, type, value, traceback):

            if self.success:

                self._revert(self.old_value)

​

    with disable_file_system_redirection():

        obj = Popen(command, shell = True, stdout = PIPE, stderr = PIPE)

    out, err = obj.communicate()

    return out,err

​

print(ecmd('netsh wlan disconnect'))

out,err = ecmd('netsh wlan export profile folder="C:\ProgramData\" name="%s" key=clear'%(SSID))

if out:

    filename = "Wi-Fi-%s.xml"%(SSID)

    filepath = "C:\ProgramData\%s"%(filename)

    with open(filepath, 'r') as f:

        xml_content = f.read()

    new_xml_content = re.sub('<keyMaterial>.*</keyMaterial>','<keyMaterial>%s</keyMaterial>'%(password),xml_content)

    with open(filepath, 'w') as f:

        f.write(new_xml_content)

    out,err = ecmd('netsh wlan delete profile name="%s"'%(SSID))

    if out:

        out,err = ecmd('netsh wlan add profile filename="%s"'%(filepath))

        if out:

            print(out)

            print("successfully changed the wifi password")

            os.remove(filepath)

        else:

            print(err)

            print("couldn't add the wifi profile")

    else:

        print(err)

        print("couldn't delete the wifi profile")

else:

    print(err)

    print("couldn't export the wifi profile")

​