confighelper.py

# encoding utf-8
#
# Requires an MCX profile with the following (example) format:
#
# <key>PayloadType</key>
# <string>com.apple.ManagedClient.preferences</string>
# <key>PayloadContent</key>
# <dict>
# 	<key>CustomConfig</key>
# 	<dict>
# 		<key>Forced</key>
# 		<array>
# 			<dict>
# 				<key>mcx_preference_settings</key>
# 				<dict>
# 					<key>config_arguments</key>
# 					<array>
# 						<string>/Applications/Utilities/Yo.app/Contents/MacOS/yo</string>
# 						<string>-t</string>
# 						<string>test title</string>
# 						<string>-s</string>
# 						<string>subtitle</string>
# 						<string>-b</string>
# 						<string>OK</string>
# 					</array>
# 				</dict>
# 			</dict>
# 		</array>
# 	</dict>
# </dict>


from Foundation import CFPreferencesCopyAppValue, NSDistributedNotificationCenter
from AppKit import *
from PyObjCTools import AppHelper
import subprocess
import textwrap


class ConfigHelper(NSObject):
    previous_config = []

    def getConfig_(self, config):
        config_details = {}
        bundleID = 'CustomConfig'
        pref_name = 'config_arguments'

        info = config.userInfo()
        config_details = dict(zip(info.keys(), info.values()))

        if str(config_details["com.apple.MCX.changedDomains"]).find(bundleID):
            raw_args = CFPreferencesCopyAppValue(pref_name, bundleID)
            if raw_args is not None:
                raw_args = str(raw_args)
                parsed_args = textwrap.dedent(raw_args.strip("()").
                                              replace("\"", "").
                                              replace(",", "")).splitlines()
                cleaned_args = filter(lambda x: x != '', parsed_args)

                if cleaned_args == self.previous_config:
                    print "no change"
                else:
                    print "Running command: " + ' '.join(map(str, cleaned_args))
                    runCommand(cleaned_args)
                    self.previous_config = cleaned_args


def runCommand(cmd):
    try:
        proc = subprocess.Popen(cmd, shell=False, bufsize=-1,
                                stdin=subprocess.PIPE,
                                stdout=subprocess.PIPE,
                                stderr=subprocess.PIPE)
        output = proc.communicate()
        return output
    except Exception:
        pass


nc = NSDistributedNotificationCenter.defaultCenter()
ConfigHelper = ConfigHelper.new()
nc.addObserver_selector_name_object_(
                                     ConfigHelper,
                                     'getConfig:',
                                     'com.apple.MCX._managementStatusChangedForDomains',
                                     'com.apple.MCX'
                                    )

NSLog("Listening for new configs...")
AppHelper.runConsoleEventLoop()