#!/usr/bin/php
<?php
/**
 * Copyright (C) 2005      Rodolphe Quiedeville <rodolphe@quiedeville.org>
 * Copyright (C) 2006-2012 Laurent Destailleur  <eldy@users.sourceforge.net>
 * Copyright (C) 2013      Maxime Kohlhaas  <maxime@atm-consulting.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/**
 *      \file       scripts/user/sync_groups_ldap2dolibarr.php
 *      \ingroup    ldap member
 *      \brief      Script to update groups into Dolibarr from LDAP
 */

$sapi_type = php_sapi_name();
$script_file = basename(__FILE__);
$path=dirname(__FILE__).'/';

// Test if batch mode
if (substr($sapi_type, 0, 3) == 'cgi') {
    echo "Error: You are using PHP for CGI. To execute ".$script_file." from command line, you must use PHP for CLI mode.\n";
	exit(-1);
}

require_once($path."../../htdocs/master.inc.php");
require_once(DOL_DOCUMENT_ROOT."/core/lib/date.lib.php");
require_once(DOL_DOCUMENT_ROOT."/core/class/ldap.class.php");
require_once(DOL_DOCUMENT_ROOT."/user/class/user.class.php");
require_once(DOL_DOCUMENT_ROOT."/user/class/usergroup.class.php");

$langs->load("main");
$langs->load("errors");


// Global variables
$version=DOL_VERSION;
$error=0;
$forcecommit=0;
$confirmed=0;


/*
 * Main
 */

@set_time_limit(0);
print "***** ".$script_file." (".$version.") pid=".dol_getmypid()." *****\n";
dol_syslog($script_file." launched with arg ".join(',',$argv));

// List of fields to get from LDAP
$required_fields = array(
	$conf->global->LDAP_KEY_GROUPS,
	$conf->global->LDAP_GROUP_FIELD_FULLNAME,
	$conf->global->LDAP_GROUP_FIELD_DESCRIPTION,
	$conf->global->LDAP_GROUP_FIELD_GROUPMEMBERS
);

// Remove from required_fields all entries not configured in LDAP (empty) and duplicated
$required_fields=array_unique(array_values(array_filter($required_fields, "dolValidElement")));


if (! isset($argv[1])) {
	//print "Usage:  $script_file (nocommitiferror|commitiferror) [id_group]\n";
	print "Usage:  $script_file (nocommitiferror|commitiferror) [--server=ldapserverhost] [--excludeuser=user1,user2...] [-y]\n";
	exit(-1);
}

foreach($argv as $key => $val)
{
	if ($val == 'commitiferror') $forcecommit=1;
	if (preg_match('/--server=([^\s]+)$/',$val,$reg)) $conf->global->LDAP_SERVER_HOST=$reg[1];
	if (preg_match('/--excludeuser=([^\s]+)$/',$val,$reg)) $excludeuser=explode(',',$reg[1]);
	if (preg_match('/-y$/',$val,$reg)) $confirmed=1;
}

print "Mails sending disabled (useless in batch mode)\n";
$conf->global->MAIN_DISABLE_ALL_MAILS=1;	// On bloque les mails
print "\n";
print "----- Synchronize all records from LDAP database:\n";
print "host=".$conf->global->LDAP_SERVER_HOST."\n";
print "port=".$conf->global->LDAP_SERVER_PORT."\n";
print "login=".$conf->global->LDAP_ADMIN_DN."\n";
print "pass=".preg_replace('/./i','*',$conf->global->LDAP_ADMIN_PASS)."\n";
print "DN to extract=".$conf->global->LDAP_GROUP_DN."\n";
print 'Filter=('.$conf->global->LDAP_KEY_GROUPS.'=*)'."\n";
print "----- To Dolibarr database:\n";
print "type=".$conf->db->type."\n";
print "host=".$conf->db->host."\n";
print "port=".$conf->db->port."\n";
print "login=".$conf->db->user."\n";
print "database=".$conf->db->name."\n";
print "----- Options:\n";
print "commitiferror=".$forcecommit."\n";
print "Mapped LDAP fields=".join(',',$required_fields)."\n";
print "\n";

if (! $confirmed)
{
	print "Hit Enter to continue or CTRL+C to stop...\n";
	$input = trim(fgets(STDIN));
}

if (empty($conf->global->LDAP_GROUP_DN))
{
	print $langs->trans("Error").': '.$langs->trans("LDAP setup for groups not defined inside Dolibarr");
	exit(-1);
}


$ldap = new Ldap();
$result = $ldap->connect_bind();
if ($result >= 0)
{
	$justthese=array();


	// We disable synchro Dolibarr-LDAP
	$conf->global->LDAP_SYNCHRO_ACTIVE=0;

	$ldaprecords = $ldap->getRecords('*',$conf->global->LDAP_GROUP_DN, $conf->global->LDAP_KEY_GROUPS, $required_fields, 0, array($conf->global->LDAP_GROUP_FIELD_GROUPMEMBERS));
	if (is_array($ldaprecords))
	{
		$db->begin();

		// Warning $ldapuser has a key in lowercase
		foreach ($ldaprecords as $key => $ldapgroup)
		{
			$group = new UserGroup($db);
			$group->fetch('', $ldapgroup[$conf->global->LDAP_KEY_GROUPS]);
			$group->name = $ldapgroup[$conf->global->LDAP_GROUP_FIELD_FULLNAME];
			$group->nom = $group->name;		// For backward compatibility
			$group->note = $ldapgroup[$conf->global->LDAP_GROUP_FIELD_DESCRIPTION];
			$group->entity = $conf->entity;

			//print_r($ldapgroup);

			if($group->id > 0) { // Group update
				print $langs->transnoentities("GroupUpdate").' # '.$key.': name='.$group->name;
				$res=$group->update();

				if ($res > 0)
				{
					print ' --> Updated group id='.$group->id.' name='.$group->name;
				}
				else
				{
					$error++;
					print ' --> '.$res.' '.$group->error;
				}
				print "\n";
			} else { // Group creation
				print $langs->transnoentities("GroupCreate").' # '.$key.': name='.$group->name;
				$res=$group->create();

				if ($res > 0)
				{
					print ' --> Created group id='.$group->id.' name='.$group->name;
				}
				else
				{
					$error++;
					print ' --> '.$res.' '.$group->error;
				}
				print "\n";
			}

			//print_r($group);

			// Gestion des utilisateurs associés au groupe
			// 1 - Association des utilisateurs du groupe LDAP au groupe Dolibarr
			$userList = array();
			$userIdList = array();
			foreach($ldapgroup[$conf->global->LDAP_GROUP_FIELD_GROUPMEMBERS] as $key => $userdn) {
				if($key === 'count') continue;
				if(empty($userList[$userdn])) { // Récupération de l'utilisateur
					$userFilter = explode(',', $userdn);
					$userKey = $ldap->getAttributeValues('('.$userFilter[0].')', $conf->global->LDAP_KEY_USERS);
					if(!is_array($userKey)) continue;

					$fuser = new User($db);

					if($conf->global->LDAP_KEY_USERS == $conf->global->LDAP_FIELD_SID) {
						$fuser->fetch('','',$userKey[0]); // Chargement du user concerné par le SID
					} else if($conf->global->LDAP_KEY_USERS == $conf->global->LDAP_FIELD_LOGIN) {
						$fuser->fetch('',$userKey[0]); // Chargement du user concerné par le login
					}

					$userList[$userdn] = $fuser;
				} else {
					$fuser = &$userList[$userdn];
				}

				$userIdList[$userdn] = $fuser->id;

				// Ajout de l'utilisateur dans le groupe
				if(!in_array($fuser->id, array_keys($group->members))) {
					$fuser->SetInGroup($group->id, $group->entity);
					echo $fuser->login.' added'."\n";
				}
			}

			// 2 - Suppression des utilisateurs du groupe Dolibarr qui ne sont plus dans le groupe LDAP
			foreach ($group->members as $guser) {
				if(!in_array($guser->id, $userIdList)) {
					$guser->RemoveFromGroup($group->id, $group->entity);
					echo $guser->login.' removed'."\n";
				}
			}
		}

		if (! $error || $forcecommit)
		{
			if (! $error) print $langs->transnoentities("NoErrorCommitIsDone")."\n";
			else print $langs->transnoentities("ErrorButCommitIsDone")."\n";
			$db->commit();
		}
		else
		{
			print $langs->transnoentities("ErrorSomeErrorWereFoundRollbackIsDone",$error)."\n";
			$db->rollback();
		}
		print "\n";
	}
	else
	{
		dol_print_error('',$ldap->error);
		$error++;
	}
}
else
{
	dol_print_error('',$ldap->error);
	$error++;
}


exit($error);


/**
 * Function to say if a value is empty or not
 *
 * @param 	string	$element	Value to test
 * @return	boolean				True of false
 */
function dolValidElement($element)
{
	return (trim($element) != '');
}