Requires the LdapAuthentication extension. Regarding precise LDAP queries YMMV.

# LDAP authentication
require_once( 'extensions/LdapAuthentication/LdapAuthentication.php' );
$wgAuth = new LdapAuthenticationPlugin();

$wgLDAPDomainNames = array( "domain-ldap" );
$wgLDAPServerNames = array( "domain-ldap" => "ldap.domain.org"  );
$wgLDAPEncryptionType = array( "domain-ldap" => "clear" );   // "testADdomain"=>"tls",
$wgLDAPSearchStrings = array( "domain-ldap"=>"uid=USER-NAME,ou=People,dc=domain,dc=org"  );

$wgLDAPWriterDN                         = array( "domain-ldap" => "cn=Manager,dc=domain,dc=org" ); // for changing passwords; AddLDAPUsers below must be true
$wgLDAPWriterPassword = array( "domain-ldap" => "MANAGERPASSWORD" ); // FIXME
$wgLDAPWriteLocation    = array( "domain-ldap" => "ou=People,dc=domain,dc=org" );

$wgLDAPAddLDAPUsers = array( "domain-ldap" => true ); // allow adding users to LDAP from mediawiki? require WriterDN/Password
$wgLDAPUpdateLDAP = array( "domain-ldap" => true );    // for updating passwords;
$wgLDAPUseLocal = array( "domain-ldap" => true ); // failover to local DB?
$wgLDAPMailPassword = array( "domain-ldap" => true ); // if can't write to LDAP this is basically useless
$wgLDAPRetrievePrefs = array( "domain-ldap" => true );
$wgMinimalPasswordLength = 1;

// Don't automatically create an account for a user if the account exists in LDAP but not in MediaWiki. Default is false.
// this totally breaks things, do not turn it on
$wgLDAPDisableAutoCreate = array( "domain-ldap" => false );

$wgLDAPDebug = 1; // 3 is a lot

This takes a username, password, url and optional time out

require 'net/http'
require 'net/https'
#Usage: username pass urlStr time_out
#

    urlStr = 'http://localhost:3000/cron/cron'
    username = "badname"
    pass = "badpass"
    time_out = 60

    if ARGV[3] != nil
     time_out = ARGV[3].to_i
    end

    if ARGV[2] != nil
     urlStr = ARGV[2]
    end
    
    if ARGV[1] != nil and ARGV[0] != nil
     username = ARGV[0]
     pass = ARGV[1]
    end
    puts urlStr + " user: "+username
    
    url = URI.parse(urlStr)
    use_ssl = url.scheme == 'https'
    req = Net::HTTP::Get.new url.path
    req.basic_auth username, pass
 
    http = Net::HTTP.new(url.host, url.port)
    http.read_timeout=time_out
    if use_ssl
      http.use_ssl = true
    end
    res = http.start { |web| 
      web.request(req) 
    }
    
    puts res.body