= 5.1
if (version_compare(phpversion(), '5.1.0') < 0) {
	$criticalErrors[] = array("ERROR", "LAM needs PHP 5 greater or equal as 5.1.0!", "Please upgrade your PHP installation.");
}
// check file permissions
$writableDirs = array('sess', 'tmp');
for ($i = 0; $i < sizeof($writableDirs); $i++) {
	$path = realpath('../') . "/" . $writableDirs[$i];
	if (!is_writable($path)) {
		$criticalErrors[] = array("ERROR", 'The directory %s is not writable for the web server. Please change your file permissions.', '', array($path));
	}
}
// check session auto start
if (ini_get("session.auto_start") == "1") {
	$criticalErrors[] = array("ERROR", "Please deactivate session.auto_start in your php.ini. LAM will not work if it is activated.");
}
$memLimit = ini_get('memory_limit');
if (isset($memLimit) && ($memLimit != '') && (substr(strtoupper($memLimit), strlen($memLimit) - 1) == 'M')) {
	if (intval(substr($memLimit, 0, strlen($memLimit) - 1)) < 64) {
		$criticalErrors[] = array("ERROR", "Please increase the \"memory_limit\" parameter in your php.ini to at least \"64M\".",
			"Your current memory limit is $memLimit.");	
	}
}
// stop login if critical errors occured
if (sizeof($criticalErrors) > 0) {
	echo "\n";
	echo "\n\n";
	echo "\n
\n";
	echo " \n";
	echo " \n		 \n";
	echo " ";
	echo "LDAP Account Manager \n";
	echo "\n";
	for ($i = 0; $i < sizeof($criticalErrors); $i++) {
		call_user_func_array("StatusMessage", $criticalErrors[$i]);
		echo " ";
	}
	echo "";
	exit();
}
/** access to configuration options */
include_once("../lib/config.inc"); // Include config.inc which provides Config class
session_save_path("../sess"); // Set session save path
session_start(); // Start LDAP Account Manager session
/**
* Displays the login window.
*
* @param object $config_object current active configuration
*/
function display_LoginPage($config_object) {
	global $error_message;
	// generate 256 bit key and initialization vector for user/passwd-encryption
	// check if we can use /dev/random otherwise use /dev/urandom or rand()
	if(function_exists('mcrypt_create_iv')) {
		$key = @mcrypt_create_iv(32, MCRYPT_DEV_URANDOM);
		if (! $key) {
			srand((double)microtime()*1234567);
			$key = mcrypt_create_iv(32, MCRYPT_RAND);
		}
		$iv = @mcrypt_create_iv(32, MCRYPT_DEV_URANDOM);
		if (! $iv) {
			srand((double)microtime()*1234567);
			$iv = mcrypt_create_iv(32, MCRYPT_RAND);
		}
		// save both in cookie
		setcookie("Key", base64_encode($key), 0, "/");
		setcookie("IV", base64_encode($iv), 0, "/");
	}
	$_SESSION['language'] = $config_object->get_defaultLanguage();
	$current_language = explode(":",$_SESSION['language']);
	$_SESSION['header'] = "\n";
	$_SESSION['header'] .= "\n\n";
	$_SESSION['header'] .= "\n\n";
	$_SESSION['header'] .= " \n";
	$_SESSION['header'] .= " \n		 ";
	// loading available languages from language.conf file
	$languagefile = "../config/language";
	if(is_file($languagefile) == True)
	{
		$file = fopen($languagefile, "r");
		$i = 0;
		while(!feof($file))
		{
			$line = fgets($file, 1024);
			if($line == "" || $line == "\n" || $line[0] == "#") continue; // ignore comment and empty lines
			$value = explode(":", $line);
			$languages[$i]["link"] = $value[0] . ":" . $value[1];
			$languages[$i]["descr"] = $value[2];
			if(rtrim($line) == $_SESSION["language"])
			{
				$languages[$i]["default"] = "YES";
			}
			else
			{
				$languages[$i]["default"] = "NO";
			}
			$i++;
		}
		fclose($file);
	}
	$profiles = getConfigProfiles();
	setlanguage(); // setting correct language
	echo $_SESSION["header"];
	?>
		LDAP Account Manager -Login- 
		 
	
	
	\n";
		echo "\n";
		echo "\n";
	?>
		
			 
		
		
			
				
					" . _("Want more features? Get LAM Pro!") . "";
						}
					?>
				 
				
					   
				 
			 
		
		 
		";
			}
		}
		// check if session expired
		if (isset($_GET['expired'])) {
			StatusMessage("ERROR", _("Your session expired, please log in again."));
			echo " ";
		}
		?>
		
		 
			
				 
					
					Pro: " . LAMVersion() . "    ";
						}
						else {
							echo "LDAP Account Manager: " . LAMVersion() . "    ";
						}
					?>
					 
				 
			
	
connect($_POST['username'],$_POST['passwd']); // Connect to LDAP server for verifing username/password
		if($result === 0) // Username/password correct. Do some configuration and load main frame.
		{
			$_SESSION['loggedIn'] = true;
			$_SESSION['language'] = $_POST['language']; // Write selected language in session
			$current_language = explode(":",$_SESSION['language']);
			$_SESSION['header'] = "\n";
			$_SESSION['header'] .= "\n\n";
			$_SESSION['header'] .= "\n\n";
			$_SESSION['header'] .= " \n";
			$_SESSION['header'] .= " \n		 ";
			// set security settings for session
			$_SESSION['sec_session_id'] = session_id();
			$_SESSION['sec_client_ip'] = $_SERVER['REMOTE_ADDR'];
			$_SESSION['sec_sessionTime'] = time();
			// logging
			logNewMessage(LOG_NOTICE, 'User ' . $_POST['username'] . ' successfully logged in.');
			// Load main frame
			metaRefresh("./main.php");
			die();
		}
		else
		{
			if ($result === False) {
				$error_message = _("Cannot connect to specified LDAP server. Please try again.");
				logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
				display_LoginPage($_SESSION['config']); // connection failed
			}
			elseif ($result == 81) {
				$error_message = _("Cannot connect to specified LDAP server. Please try again.");
				logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
				display_LoginPage($_SESSION['config']); // connection failed
			}
			elseif ($result == 49) {
				$error_message = _("Wrong password/user name combination. Please try again.");
				logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' failed to log in (wrong password).');
				display_LoginPage($_SESSION['config']); // Username/password invalid. Return to login page.
			}
			else {
				$error_message = _("LDAP error, server says:") .  "\n ($result) " . ldap_err2str($result);
				logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
				display_LoginPage($_SESSION['config']); // other errors
			}
		}
	}
}
// Reload loginpage after a profile change
elseif(!empty($_POST['profileChange'])) {
	$_SESSION['config'] = new LAMConfig($_POST['profile']); // Recreate the config object with the submited
	display_LoginPage($_SESSION['config']); // Load login page
}
// Load login page
else
{
	$_SESSION['loggedIn'] = false;
	$default_Config = new LAMCfgMain();
	$default_Profile = $default_Config->default;
	$_SESSION["config"] = new LAMConfig($default_Profile); // Create new Config object
	$_SESSION["cfgMain"] = $default_Config; // Create new CfgMain object
	display_LoginPage($_SESSION["config"]); // Load Login page
}
?>