take ldapsearch output and save big json blob

ad_to_json

#!/usr/bin/env ruby

# Save all AD objects in a big json blob you can mess around with

require 'json'
require 'Open3'
require 'pry'

# replace below with correct AD server, baseDN, and bind account DN and password
cmd = "ldapsearch -E pr=1000/noprompt -xLLL " +
      "-H 'ldap://10.10.10.20' " +
      "-b 'dc=example,dc=com' " +
      "-s sub " +
      "-D 'CN=service bind,OU=Service Accounts,DC=example,DC=com' " +
      "-w 'PASSWORD_FOR_THAT_ACCOUNT' " +
      "'*'"

stdin, stdout, stderr = Open3.popen3(cmd)
big = {}
o = {}
currentkey = ''
stdout.each do |line|
  line.chomp!
  next if line =~ /^#/
  if line == '' # end of record
    if o.size > 0
        if o.key?('dn')
	    big[o['dn']] = o
	    #puts o.to_json
	end
    end
    o = {}
    currentkey = nil
    next
  end
  if line =~ /^\s+(.*)/ # line starting with space is continuation
    next if currentkey.nil?
    d = o[currentkey]
    if d.instance_of? Array
      i = o[currentkey].size()-1
      t = o[currentkey][i] + $1
      o[currentkey][i] = t
      next
    else
      d = d + $1
      o[currentkey] = d
      next
    end
  end
  if line =~ /^(.*): (.*)$/
    k=$1
    currentkey = k
    v=$2
    d = o[k]
    if d.nil?
        o[k] = v
        next
    end
    if d.instance_of? Array
        o[k] << v
        next
    end
    o[k] = [o[k]]
    o[k] << v
    next
  end
  puts "ERROR: Something is screwy"
  binding.pry
end
File.open("ad.json", 'w').write(big.to_json)