workflow step in DeployStudio to stop setting up for binding with hostname in a 'bad' (read= already used on a pc or some other mistakenly chosen) AD OU/container

check_ad.py

#!/usr/bin/python
"""Checks if a computername already exists in a container we can't write to,
to prevent errors binding."""


import os
import subprocess
import sys


def main():
    """gimme some main"""
    read_only_user = "ouruser"
    password = "super_sekrit!!"
    domain = "domain.com"
    ds_repo_path = os.environ.get('DS_REPOSITORY_PATH')
    ldapsearch = ds_repo_path + "/Backups/admin/ldapsearch"
    ds_hostname = os.environ.get('DS_HOSTNAME')
    cmd = [ldapsearch, "-LLL", "-h", domain, "-x", "-D", read_only_user + '@' + domain, "-w", password, "-b", "DC=domain,DC=com", "name=" + ds_hostname]
    output = subprocess.check_output(cmd)
    if len(output) > 234:
        listed = output.strip('\n')
        if not "OU=writable,OU=container,DC=domain,DC=com" in listed:
            print "baaaad"
            sys.exit(1)
        else:
            print "in our Macs/Devices group"
    else:
        print "unused name, clear to proceed"
    sys.exit(0)

if __name__ == '__main__':
    main()