remove_local_mcx_node.py

#!/usr/bin/python
# This script removes LocalMCX from opendirectoryd's search path
# this version 08 Dec 2014 Greg Neagle

import plistlib
import subprocess
import sys

try:
    output = subprocess.check_output(
        ['/usr/bin/dscl', '-plist', '/Search', 'read', '/', 'CSPSearchPath'])
except subprocess.CalledProcessError, err:
    print >> sys.stderr, "dscl error: %s" % err
    exit(-1)
try:
    pl = plistlib.readPlistFromString(output)
except BaseException, err:
    print >> sys.stderr, "plist error: %s" % err
    exit(-1)
    
search_list = pl.get('dsAttrTypeStandard:CSPSearchPath', [])
if '/Local/MCX' in search_list:
    filtered_search_list = [item 
                            for item in search_list if item != '/Local/MCX']

    if (len(filtered_search_list)
            and filtered_search_list[0] == '/Local/Default'):
        cmd = ['/usr/bin/dscl', 
               '/Search', 'create', '/', 'SearchPolicy', 'CSPSearchPath']
        try:
            subprocess.check_call(cmd)
        except subprocess.CalledProcessError, err:
            print >> sys.stderr, "dscl error: %s" % err
            exit(-1)

        cmd = ['/usr/bin/dscl', '/Search', 'create', '/', 'CSPSearchPath']
        cmd.extend(filtered_search_list)
        try:
            subprocess.check_call(cmd)
        except subprocess.CalledProcessError, err:
            print >> sys.stderr, "dscl error: %s" % err
            exit(-1)
    else:
        print >> sys.stderr, "ds search list error: %s" % filtered_search_list
        exit(-1)