Power User Preferences (With Location Services).py

#!/usr/bin/python
# pylint:disable=C0103, E0611, E1101, W0703
'''Power User Preferences (With Location Services)'''
# This policy will unlock certain system prereference
# panes in macOS to allow users who do not have administrative
# privileges to access them.
# Joshua D. Miller - josh@psu.edu
# The Pennsylvania State University
# August 31, 2016 - Converted from Bash
# April 4, 2017 - Updates Location Services and tested with 10.12.4

from __future__ import print_function
from ctypes import CDLL, c_void_p, byref
from ctypes.util import find_library
from CoreLocation import CLLocationManager
from Foundation import (NSBundle, CFPreferencesSetValue,
                        CFPreferencesSynchronize, kCFPreferencesAnyUser,
                        kCFPreferencesCurrentUser, kCFPreferencesCurrentHost)
import multiprocessing
from platform import mac_ver
from distutils import version
import objc


class power_prefs_with_location(object):
    '''This is the main class for this script. It will contain all
    the variables that we need for use throughout this script'''
    # Get the current version of macOS running on the client
    macOS_version = mac_ver()[0]
    macOS_version = version.StrictVersion(macOS_version)
    # Load Security Framework thanks to Tom burgin
    # https://gist.github.com/tburgin/ca7cf77767
    Security = CDLL(find_library("Security.framework"))
    AuthorizationRightGet = Security.AuthorizationRightGet
    AuthorizationRightSet = Security.AuthorizationRightSet
    AuthorizationCreate = Security.AuthorizationCreate
    # Set blank uuid variable
    uuid = ''
    # Create list of system preferences that we want to modify
    system_prefs_to_change = [
        'system.preferences', 'system.preferences.datetime',
        'system.preferences.timemachine', 'system.preferences.energysaver']

    @classmethod
    def get_uuid(cls):
        '''Get the UUID of the computer'''
        # IOKit Bundle Objective C code from Michael Lynn
        # https://gist.github.com/pudquick/c7dd1262bd81a32663f0
        IOKit_bundle = NSBundle.bundleWithIdentifier_(
            'com.apple.framework.IOKit')
        functions = [("IOServiceGetMatchingService", b"II@"),
                     ("IOServiceMatching", b"@*"),
                     ("IORegistryEntryCreateCFProperty", b"@I@@I"), ]
        IOKit = dict()
        objc.loadBundleFunctions(IOKit_bundle, IOKit, functions)
        # pylint:disable=F0401, E0602, W0232
        cls.uuid = IOKit['IORegistryEntryCreateCFProperty'](
            IOKit['IOServiceGetMatchingService'](
                0, IOKit['IOServiceMatching'](
                    'IOPlatformExpertDevice')), 'IOPlatformUUID', None, 0)

    @classmethod
    def authorization_right_get(cls, right):
        '''Get Authorization Right thanks to Tom Burgin
        https://gist.github.com/tburgin/77ebd114d59d368b0b4321ca7cf77767'''
        db_buffer = c_void_p()
        cls.AuthorizationRightGet(right, byref(db_buffer))
        if db_buffer:
            # pylint:disable=E1101
            return objc.objc_object(c_void_p=db_buffer).mutableCopy()

    @classmethod
    def authorization_right_set(cls, right, value):
        '''Set Authorization Right thanks to Tom Burgin
        https://gist.github.com/tburgin/77ebd114d59d368b0b4321ca7cf77767'''
        auth_ref = c_void_p()
        cls.AuthorizationCreate(None, None, 0, byref(auth_ref))
        return cls.AuthorizationRightSet(
            auth_ref, right, value.__c_void_p__(), None, None, None)

    @classmethod
    def location_services(cls):
        '''This funciton will allow the Mac to change its time zone
        # based off its location when it is connected to WiFi'''
        ls_status = CLLocationManager.locationServicesEnabled()
        if ls_status is False:
            try:
                import os
                import pwd
                locationd_uid = pwd.getpwnam('_locationd').pw_uid
                os.setuid(locationd_uid)
                CFPreferencesSetValue('LocationServicesEnabled',
                                      True, 'com.apple.locationd',
                                      kCFPreferencesCurrentUser,
                                      kCFPreferencesCurrentHost)
            except Exception as error:
                print(error)

    @classmethod
    def main(cls):
        '''This function will set the system preferences we have specified
        and will turn on location services based off WiFi location'''

        # Enable all users access to the System Preference Panes
        # we defined above
        for preference in cls.system_prefs_to_change:
            if cls.macOS_version < "10.10.0":
                print('This script will not function on 10.9.5 or below...')
                exit(0)
            else:
                db = power_prefs_with_location.authorization_right_get(
                    preference)
                if db['group'] == 'admin':
                    db['group'] = 'everyone'
                if preference == 'system.preferences.datetime':
                    db['shared'] = True
                    power_prefs_with_location.authorization_right_set(
                        preference, db)
                else:
                    continue
        # Turn on Location Services and set Time Zone by Location
        enable_ls = multiprocessing.Process(
            power_prefs_with_location.location_services())
        enable_ls.start()
        enable_ls.join()
        # Turn on Auto Timezone
        CFPreferencesSetValue('Active', True, 'com.apple.timezone.auto',
                              kCFPreferencesAnyUser, kCFPreferencesCurrentHost)
        # Syncrhonize Preferences for Auto Timezone
        CFPreferencesSynchronize('com.apple.timezone.auto',
                                 kCFPreferencesAnyUser,
                                 kCFPreferencesCurrentHost)


power_prefs_with_location.main()