require "yaml"
require "ldap"

include LDAP

host = "192.168.1.15"
base = "OU=staff,DC=example,DC=com"
port = 389
login = "admin"
password = ""

class ActiveDirectory
  include LDAP
  
  def initialize(options = {})
    options.each { |k, v| instance_variable_set(:"@#{k}",  v) }
  end
  
  def get_objects
    connection.search2(@base, LDAP::LDAP_SCOPE_SUBTREE, '(cn=*)',['cn', 'sAMAccountName'])
  end
  
  private
  
  def connection
    return @connection if @connection.instance_of?(LDAP::Conn) || connect
  end
  
  def connect
    @connection = LDAP::Conn.open(@host, @port)
    @connection.set_option(LDAP::LDAP_OPT_PROTOCOL_VERSION, 3)
    @connection.bind(@login, @password)
  end

end

a = ActiveDirectory.new(:host => host, :base => base, :port => port, :login => login, :password => password)
results = a.get_objects

users = []
results.each do |r|
  users << {'login' => r['cn'][0], 'name' => r['sAMAccountName'][0]}
end

users.each { |u| puts u.to_yaml }