PHP - ayuda con codigo

buenos días, recien instale un programa llamado GLPI de gestion de inventarios y quiero lograr la autenticacion externa, para ello me dicen debo modificar un archivo (login.php) pero al codigo parece le falta el cierre de corchetes. la ruta del codigo moodificado es la siguiente
http://glpi-project.org/wiki/doku.php?id=es:autenticacion_automatica y el codigo sin modificacion es este: (por favor indiquenme la modificacion corregida gracias.
<?php

include ("_relpos.php");
$NEEDED_ITEMS=array("user","profile","setup","group");

include ($phproot . "/inc/includes.php");

$_POST=array_map('stripslashes',$_POST);

$user_present=1;
if (!isset($_POST['login_name'])) $_POST['login_name']="";
$identificat = new Identification();

$auth_succeded=false;

if (isset($_POST['login_password'])){
$_POST['login_password']=unclean_cross_side_scripting_deep($_POST['login_password']);
}

if (!isset($_POST["noCAS"])&&!empty($cfg_glpi["cas_host"])) {
include ($phproot . "/lib/phpcas/CAS.php");
phpCAS::client(CAS_VERSION_2_0,$cfg_glpi["cas_host"],intval($cfg_glpi["cas_port"]),$cfg_glpi["cas_uri"]);

// force CAS authentication
phpCAS::forceAuthentication();
$user=phpCAS::getUser();
$auth_succeded=true;
$identificat->extauth=1;
$user_present = $identificat->user->getFromDBbyName($user);
if (!$user_present) $identificat->user->fields["name"]=$user;
}
if (isset($_POST["noCAS"])) $_SESSION["noCAS"]=1;

if (!$auth_succeded) // Pas de tests en configuration CAS
if (empty($_POST['login_name'])||empty($_POST['login_password'])){
$identificat->err=$lang["login"][8];
} else {

// exists=0 -> no exist
// exists=1 -> exist with password
// exists=2 -> exist without password
$exists=$identificat->userExists($_POST['login_name']);

// Pas en premier car sinon on ne fait pas le blankpassword
// First try to connect via le DATABASE
if ($exists==1){

// Without UTF8 decoding
if (!$auth_succeded) $auth_succeded = $identificat->connection_db($_POST['login_name'],$_POST['login_password']);
if ($auth_succeded) {
$user_present = $identificat->user->getFromDBbyName($_POST['login_name']);
}

// With UTF8 decoding
//if (!$auth_succeded) $auth_succeded = $identificat->connection_db(utf8_decode($_POST['login_name']),utf8_decode($_POST['login_password']));
//if ($auth_succeded) $user_present = $identificat->user->getFromDBbyName(utf8_decode($_POST['login_name']));

}

// Second try IMAP/POP
if (!$auth_succeded&&!empty($cfg_glpi["imap_auth_server"])) {
$auth_succeded = $identificat->connection_imap($cfg_glpi["imap_auth_server"],utf8_decode($_POST['login_name']),utf8_decode($_POST['login_password']));
if ($auth_succeded) {
$identificat->extauth=1;
$user_present = $identificat->user->getFromDBbyName($_POST['login_name']);

if ($identificat->user->getFromIMAP($cfg_glpi["imap_host"],utf8_decode($_POST['login_name']))) {
}
}
}

// Third try LDAP in depth search
// we check all the auth sources in turn...
// First, we get the dn and then, we try to log in
if (!$auth_succeded&&!empty($cfg_glpi["ldap_host"])) {
$found_dn=false;
$auth_succeded=0;
$found_dn=$identificat->ldap_get_dn($cfg_glpi["ldap_host"],$cfg_glpi["ldap_basedn"],utf8_decode($_POST['login_name']),$cfg_glpi["ldap_rootdn"],$cfg_glpi["ldap_pass"],$cfg_glpi["ldap_port"]);

if ($found_dn!=false&&!empty($_POST['login_password'])){
$auth_succeded = $identificat->connection_ldap($cfg_glpi["ldap_host"],$found_dn,utf8_decode($_POST['login_name']),utf8_decode($_POST['login_password']),$cfg_glpi["ldap_condition"],$cfg_glpi["ldap_port"]);
if ($auth_succeded) {
$identificat->extauth=1;
$user_present = $identificat->user->getFromDBbyName($_POST['login_name']);
$identificat->user->getFromLDAP($cfg_glpi["ldap_host"],$cfg_glpi["ldap_port"],$found_dn,$cfg_glpi["ldap_rootdn"],$cfg_glpi["ldap_pass"],$cfg_glpi['ldap_fields'],utf8_decode($_POST['login_name']));
}
}
}

// Fourth try for flat LDAP
// LDAP : Try now with the first base_dn
if (!$auth_succeded&&!empty($cfg_glpi["ldap_host"])) {
$auth_succeded = $identificat->connection_ldap($cfg_glpi["ldap_host"],$cfg_glpi["ldap_basedn"],utf8_decode($_POST['login_name']),utf8_decode($_POST['login_password']),$cfg_glpi["ldap_condition"],$cfg_glpi["ldap_port"]);
if ($auth_succeded) {
$identificat->extauth=1;
$user_present = $identificat->user->getFromDBbyName($_POST['login_name']);
$identificat->user->getFromLDAP($cfg_glpi["ldap_host"],$cfg_glpi["ldap_port"],$cfg_glpi["ldap_basedn"],$cfg_glpi["ldap_rootdn"],$cfg_glpi["ldap_pass"],$cfg_glpi['ldap_fields'],utf8_decode($_POST['login_name']));

}
}

// Fifth try Active directory LDAP in depth search
// we check all the auth sources in turn...
// First, we get the dn and then, we try to log in
if (!$auth_succeded&&!empty($cfg_glpi["ldap_host"])) {
//echo "AD";
$found_dn=false;
$auth_succeded=0;
$found_dn=$identificat->ldap_get_dn_active_directory($cfg_glpi["ldap_host"],$cfg_glpi["ldap_basedn"],$_POST['login_name'],$cfg_glpi["ldap_rootdn"],$cfg_glpi["ldap_pass"],$cfg_glpi["ldap_port"]);
//echo $found_dn."---";
if ($found_dn!=false&&!empty($_POST['login_password'])){
$auth_succeded = $identificat->connection_ldap_active_directory($cfg_glpi["ldap_host"],$found_dn,$_POST['login_name'],$_POST['login_password'],$cfg_glpi["ldap_condition"],$cfg_glpi["ldap_port"]);
if ($auth_succeded) {
$identificat->extauth=1;
$user_present = $identificat->user->getFromDBbyName($_POST['login_name']);
$identificat->user->getFromLDAP_active_directory($cfg_glpi["ldap_host"],$cfg_glpi["ldap_port"],$found_dn,$cfg_glpi["ldap_rootdn"],$cfg_glpi["ldap_pass"],$cfg_glpi['ldap_fields'],$_POST['login_name']);
}
}
}

} // Fin des tests de connexion

// Ok, we have gathered sufficient data, if the first return false the user
// are not present on the DB, so we add it.
// if not, we update it.

if ($auth_succeded)
if (!$user_present&&$cfg_glpi["auto_add_users"]) {
if ($identificat->extauth)
$identificat->user->fields["_extauth"]=1;
$input=$identificat->user->fields;
unset($identificat->user->fields);
$identificat->user->fields["ID"]=$identificat->user->add($input);

} else if (!$user_present){ // Auto add not enable so auth failed
$identificat->err.=$lang["login"][11];
$auth_succeded=false;
} else if ($user_present) {
if (!$identificat->user->fields["active"]){
$identificat->err.=$lang["login"][11];
$auth_succeded=false;
} else {

// update user and Blank PWD to clean old database for the external auth
if ($identificat->extauth){

$identificat->user->update($identificat->user->fields);
$identificat->user->blankPassword();
}
}
}

// we have done at least a good login? No, we exit.
if ( ! $auth_succeded ) {
nullHeader("Login",$_SERVER['PHP_SELF']);
echo "<div align='center'><b>".$identificat->getErr().".</b><br><br>";
echo "<b><a href=\"".$cfg_glpi["root_doc"]."/logout.php\">".$lang["login"][1]."</a></b></div>";
nullFooter();
if ($cfg_glpi["debug"]==DEMO_MODE)
logevent(-1, "system", 1, "login", "failed login: ".$_POST['login_name']);
else
logevent(-1, "system", 1, "login", $lang["log"][41].": ".$_POST['login_name']);
exit;
}

// now we can continue with the process...
$identificat->initSession();

// GET THE IP OF THE CLIENT
$ip = (getenv("HTTP_X_FORWARDED_FOR")
? getenv("HTTP_X_FORWARDED_FOR")
: getenv("REMOTE_ADDR"));

// Log Event
if ($cfg_glpi["debug"]==DEMO_MODE)
logEvent("-1", "system", 3, "login", $_POST['login_name']." logged in.".$lang["log"][40]." : ".$ip);
else
logEvent("-1", "system", 3, "login", $_POST['login_name']." ".$lang["log"][40]." : ".$ip);

// Expire Event Log
if ($cfg_glpi["expire_events"]>0){
$secs = $cfg_glpi["expire_events"]*86400;
$query_exp = "DELETE FROM glpi_event_log WHERE UNIX_TIMESTAMP(date) < UNIX_TIMESTAMP()-$secs";
$result_exp = $db->query($query_exp);
}

// Redirect management
$REDIRECT="";
if (isset($_POST['redirect']))
$REDIRECT="?redirect=".$_POST['redirect'];

// Redirect to Command Central if not post-only
if ($_SESSION["glpiprofile"]["interface"] == "helpdesk")
{
glpi_header($cfg_glpi['root_doc']."/front/helpdesk.public.php$REDIRECT");
}
else
{
glpi_header($cfg_glpi['root_doc']."/front/central.php$REDIRECT");
}

?>