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<?php
2
/**
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 *
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 * @category        framework
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 * @package         backend login
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 * @author          Ryan Djurovich, WebsiteBaker Project
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 * @copyright       2009-2012, Website Baker Org. e.V.
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 * @link			http://www.websitebaker2.org/
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 * @license         http://www.gnu.org/licenses/gpl.html
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 * @platform        WebsiteBaker 2.8.x
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 * @requirements    PHP 5.2.2 and higher
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 * @version         $Id$
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 * @filesource		$HeadURL$
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 * @lastmodified    $Date$
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 *
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 */
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/* -------------------------------------------------------- */
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// Must include code to stop this file being accessed directly
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if(!defined('WB_PATH')) {
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	require_once(dirname(__FILE__).'/globalExceptionHandler.php');
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	throw new IllegalFileException();
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}
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/* -------------------------------------------------------- */
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define('LOGIN_CLASS_LOADED', true);
25
26
// Load the other required class files if they are not already loaded
27
require_once(WB_PATH."/framework/class.admin.php");
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// Get WB version
29
require_once(ADMIN_PATH.'/interface/version.php');
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31
class login extends admin {
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	public function __construct($config_array) {
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		// Get language vars
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		global $MESSAGE, $database;
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		parent::__construct();
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		// Get configuration values
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		while(list($key, $value) = each($config_array)) {
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			$this->{(strtolower($key))} = $value;
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		}
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		if(!isset($this->redirect_url)) { $this->redirect_url = ''; }
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		// Get the supplied username and password
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		if ($this->get_post('username_fieldname') != ''){
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			$username_fieldname = $this->get_post('username_fieldname');
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			$password_fieldname = $this->get_post('password_fieldname');
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		} else {
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			$username_fieldname = 'username';
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			$password_fieldname = 'password';
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		}
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		$this->username = htmlspecialchars (strtolower($this->get_post($username_fieldname)), ENT_QUOTES);
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51
		$this->password = $this->get_post($password_fieldname);
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		// Figure out if the "remember me" option has been checked
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		if($this->get_post('remember') == 'true') {
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			$this->remember = $this->get_post('remember');
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		} else {
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			$this->remember = false;
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		}
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		// Get the length of the supplied username and password
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		if($this->get_post($username_fieldname) != '') {
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			$this->username_len = strlen($this->username);
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			$this->password_len = strlen($this->password);
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		}
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		// If the url is blank, set it to the default url
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		$this->url = $this->get_post('url');
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		if ($this->redirect_url!='') {
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			$this->url = $this->redirect_url;
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		}
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		if(strlen($this->url) < 2) {
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			$this->url = $config_array['DEFAULT_URL'];
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		}
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		if($this->is_authenticated() == true) {
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			// User already logged-in, so redirect to default url
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//				header("Location: ".$this->url);
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//				exit(0);
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				$this->send_header($this->url);
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		} elseif($this->is_remembered() == true) {
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			// User has been "remembered"
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			// Get the users password
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			// $database = new database();
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			$sql  = 'SELECT * FROM `'.$this->users_table.'` ';
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			$sql .= 'WHERE `user_id`=\''.$this->get_safe_remember_key().'\'';
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			$query_details = $database->query($sql);
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			$fetch_details = $query_details->fetchRow();
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			$this->username = $fetch_details['username'];
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			$this->password = $fetch_details['password'];
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			// Check if the user exists (authenticate them)
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			if($this->authenticate()) {
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				// Authentication successful
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//				header("Location: ".$this->url);
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//				exit(0);
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				$this->send_header($this->url);
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			} else {
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				$this->message = $MESSAGE['LOGIN_AUTHENTICATION_FAILED'];
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				$this->increase_attemps();
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			}
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		} elseif($this->username == '' AND $this->password == '') {
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			$this->message = $MESSAGE['LOGIN_BOTH_BLANK'];
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			$this->display_login();
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		} elseif($this->username == '') {
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			$this->message = $MESSAGE['LOGIN_USERNAME_BLANK'];
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			$this->increase_attemps();
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		} elseif($this->password == '') {
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			$this->message = $MESSAGE['LOGIN_PASSWORD_BLANK'];
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			$this->increase_attemps();
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		} elseif($this->username_len < $config_array['MIN_USERNAME_LEN']) {
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			$this->message = $MESSAGE['LOGIN_USERNAME_TOO_SHORT'];
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			$this->increase_attemps();
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		} elseif($this->password_len < $config_array['MIN_PASSWORD_LEN']) {
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			$this->message = $MESSAGE['LOGIN_PASSWORD_TOO_SHORT'];
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			$this->increase_attemps();
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		} elseif($this->username_len > $config_array['MAX_USERNAME_LEN']) {
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			$this->message = $MESSAGE['LOGIN_USERNAME_TOO_LONG'];
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			$this->increase_attemps();
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		} elseif($this->password_len > $config_array['MAX_PASSWORD_LEN']) {
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			$this->message = $MESSAGE['LOGIN_PASSWORD_TOO_LONG'];
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			$this->increase_attemps();
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		} else {
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			// Check if the user exists (authenticate them)
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			$this->password = md5($this->password);
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			if($this->authenticate()) {
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				// Authentication successful
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// 				echo $this->url;exit();
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// 				header("Location: ".$this->url);
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// 				exit(0);
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				$this->send_header($this->url);
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			} else {
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				$this->message = $MESSAGE['LOGIN_AUTHENTICATION_FAILED'];
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				$this->increase_attemps();
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			}
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		}
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	}
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133
	// Authenticate the user (check if they exist in the database)
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	function authenticate() {
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		global $database;
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		// Get user information
137
		// $database = new database();
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		// $query = 'SELECT * FROM `'.$this->users_table.'` WHERE MD5(`username`) = "'.md5($this->username).'" AND `password` = "'.$this->password.'" AND `active` = 1';
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 		$loginname = ( preg_match('/[\;\=\&\|\<\> ]/',$this->username) ? '' : $this->username );
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		$sql  = 'SELECT * FROM `'.$this->users_table.'` ';
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		$sql .= 'WHERE `username`=\''.$loginname.'\' AND `password`=\''.$this->password.'\' AND `active`=1';
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		$results = $database->query($sql);
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		$results_array = $results->fetchRow();
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		$num_rows = $results->numRows();
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		if($num_rows == 1) {
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			$user_id = $results_array['user_id'];
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			$this->user_id = $user_id;
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			$_SESSION['USER_ID'] = $user_id;
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			$_SESSION['GROUP_ID'] = $results_array['group_id'];
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			$_SESSION['GROUPS_ID'] = $results_array['groups_id'];
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			$_SESSION['USERNAME'] = $results_array['username'];
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			$_SESSION['DISPLAY_NAME'] = $results_array['display_name'];
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			$_SESSION['EMAIL'] = $results_array['email'];
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			$_SESSION['HOME_FOLDER'] = $results_array['home_folder'];
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			// Run remember function if needed
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			if($this->remember == true) {
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				$this->remember($this->user_id);
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			}
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			// Set language
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			if($results_array['language'] != '') {
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				$_SESSION['LANGUAGE'] = $results_array['language'];
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			}
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			// Set timezone
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			if($results_array['timezone'] != '-72000') {
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				$_SESSION['TIMEZONE'] = $results_array['timezone'];
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			} else {
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				// Set a session var so apps can tell user is using default tz
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				$_SESSION['USE_DEFAULT_TIMEZONE'] = true;
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			}
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			// Set date format
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			if($results_array['date_format'] != '') {
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				$_SESSION['DATE_FORMAT'] = $results_array['date_format'];
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			} else {
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				// Set a session var so apps can tell user is using default date format
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				$_SESSION['USE_DEFAULT_DATE_FORMAT'] = true;
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			}
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			// Set time format
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			if($results_array['time_format'] != '') {
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				$_SESSION['TIME_FORMAT'] = $results_array['time_format'];
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			} else {
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				// Set a session var so apps can tell user is using default time format
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				$_SESSION['USE_DEFAULT_TIME_FORMAT'] = true;
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			}
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			// Get group information
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			$_SESSION['SYSTEM_PERMISSIONS'] = array();
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			$_SESSION['MODULE_PERMISSIONS'] = array();
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			$_SESSION['TEMPLATE_PERMISSIONS'] = array();
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			$_SESSION['GROUP_NAME'] = array();
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			$first_group = true;
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			foreach (explode(",", $this->get_session('GROUPS_ID')) as $cur_group_id)
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            {
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				$sql = 'SELECT * FROM `'.$this->groups_table.'` WHERE `group_id`=\''.$cur_group_id.'\'';
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				$results = $database->query($sql);
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				$results_array = $results->fetchRow();
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				$_SESSION['GROUP_NAME'][$cur_group_id] = $results_array['name'];
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				// Set system permissions
199
				if($results_array['system_permissions'] != '') {
200
					$_SESSION['SYSTEM_PERMISSIONS'] = array_merge($_SESSION['SYSTEM_PERMISSIONS'], explode(',', $results_array['system_permissions']));
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				}
202
				// Set module permissions
203
				if($results_array['module_permissions'] != '') {
204
					if ($first_group) {
205
          	$_SESSION['MODULE_PERMISSIONS'] = explode(',', $results_array['module_permissions']);
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          } else {
207
          	$_SESSION['MODULE_PERMISSIONS'] = array_intersect($_SESSION['MODULE_PERMISSIONS'], explode(',', $results_array['module_permissions']));
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					}
209
				}
210
				// Set template permissions
211
				if($results_array['template_permissions'] != '') {
212
					if ($first_group) {
213
          	$_SESSION['TEMPLATE_PERMISSIONS'] = explode(',', $results_array['template_permissions']);
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          } else {
215
          	$_SESSION['TEMPLATE_PERMISSIONS'] = array_intersect($_SESSION['TEMPLATE_PERMISSIONS'], explode(',', $results_array['template_permissions']));
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					}
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				}
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				$first_group = false;
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			}
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			// Update the users table with current ip and timestamp
222
			$get_ts = time();
223
			$get_ip = $_SERVER['REMOTE_ADDR'];
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			$sql  = 'UPDATE `'.$this->users_table.'` ';
225
			$sql .= 'SET `login_when`=\''.$get_ts.'\', `login_ip`=\''.$get_ip.'\' ';
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			$sql .= 'WHERE `user_id`=\''.$user_id.'\'';
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			$database->query($sql);
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		}else {
229
		  $num_rows = 0;
230
		}
231
		// Return if the user exists or not
232
		return $num_rows;
233
	}
234
235
	// Increase the count for login attemps
236
	function increase_attemps() {
237
		if(!isset($_SESSION['ATTEMPS'])) {
238
			$_SESSION['ATTEMPS'] = 0;
239
		} else {
240
			$_SESSION['ATTEMPS'] = $this->get_session('ATTEMPS')+1;
241
		}
242
		$this->display_login();
243
	}
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245
	// Function to set a "remembering" cookie for the user - removed
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	function remember($user_id) {
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		return true;
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	}
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250
	// Function to check if a user has been remembered - removed
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	function is_remembered()
252
	{
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		return false;
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	}
255
256
	// Display the login screen
257
	function display_login() {
258
		// Get language vars
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		global $MESSAGE, $MENU, $TEXT;
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		// If attemps more than allowed, warn the user
261
		if($this->get_session('ATTEMPS') > $this->max_attemps) {
262
			$this->warn();
263
		}
264
		// Show the login form
265
		if($this->frontend != true) {
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			//require_once(WB_PATH.'/include/phplib/template.inc');
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			// $template = new Template($this->template_dir);
268
			// Setup template object, parse vars to it, then parse it
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			$template = new Template(dirname($this->correct_theme_source($this->template_file)));
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			$template->set_file('page', $this->template_file);
271
			$template->set_block('page', 'mainBlock', 'main');
272
			if($this->remember_me_option != true) {
273
				$template->set_var('DISPLAY_REMEMBER_ME', 'display: none;');
274
			} else {
275
				$template->set_var('DISPLAY_REMEMBER_ME', '');
276
			}
277
			$template->set_var(array(
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				'ACTION_URL' => $this->login_url,
279
				'ATTEMPS' => $this->get_session('ATTEMPS'),
280
				'USERNAME' => $this->username,
281
				'USERNAME_FIELDNAME' => $this->username_fieldname,
282
				'PASSWORD_FIELDNAME' => $this->password_fieldname,
283
				'MESSAGE' => $this->message,
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				'WEBSITE_TITLE' => WEBSITE_TITLE,
285
				'TEXT_ADMINISTRATION' => $TEXT['ADMINISTRATION'],
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				'INTERFACE_DIR_URL' =>  ADMIN_URL.'/interface',
287
				'MAX_USERNAME_LEN' => $this->max_username_len,
288
				'MAX_PASSWORD_LEN' => $this->max_password_len,
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				'ADMIN_URL' => ADMIN_URL,
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				'WB_URL' => WB_URL,
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				'URL_VIEW' => WB_URL,
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				'THEME_URL' => THEME_URL,
293
				'VERSION' => VERSION,
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				'SP' => (defined('SP') ? SP : ''),
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				'REVISION' => REVISION,
296
				'LANGUAGE' => strtolower(LANGUAGE),
297
				'FORGOTTEN_DETAILS_APP' => $this->forgotten_details_app,
298
				'TEXT_FORGOTTEN_DETAILS' => $TEXT['FORGOTTEN_DETAILS'],
299
				'TEXT_USERNAME' => $TEXT['USERNAME'],
300
				'TEXT_PASSWORD' => $TEXT['PASSWORD'],
301
				'TEXT_REMEMBER_ME' => $TEXT['REMEMBER_ME'],
302
				'TEXT_LOGIN' => $TEXT['LOGIN'],
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				'TITLE_LOGOUT' => $MENU['LOGIN'],
304
				'TEXT_RESET' => $TEXT['RESET'],
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				'TEXT_HOME' => $TEXT['HOME'],
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				'TITLE_VIEW' => $TEXT['WEBSITE'],
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				'PAGES_DIRECTORY' => PAGES_DIRECTORY,
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				'SECTION_NAME' => $MENU['LOGIN'],
309
				'SECTION_LOGIN' => $MENU['LOGIN'],
310
				'LOGIN_DISPLAY_HIDDEN' => !$this->is_authenticated() ? 'hidden' : '',
311
				'LOGIN_DISPLAY_NONE' => !$this->is_authenticated() ? 'none' : '',
312
				'LOGIN_LINK' => $_SERVER['SCRIPT_NAME'],
313
				'LOGIN_ICON' => 'login',
314
				'START_ICON' => 'blank',
315
				'URL_HELP' => 'http://www.websitebaker.org/',
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				)
317
			);
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			if(defined('DEFAULT_CHARSET')) {
319
				$charset=DEFAULT_CHARSET;
320
			} else {
321
				$charset='utf-8';
322
			}
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			$template->set_var('CHARSET', $charset);
325
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			$template->parse('main', 'mainBlock', false);
327
			$template->pparse('output', 'page');
328
		}
329
	}
330
331
	// sanities the REMEMBER_KEY cookie to avoid SQL injection
332
	function get_safe_remember_key() {
333
		if (!((strlen($_COOKIE['REMEMBER_KEY']) == 23) && (substr($_COOKIE['REMEMBER_KEY'], 11, 1) == '_'))) return '';
334
		// create a clean cookie (XXXXXXXXXXX_YYYYYYYYYYY) where X:= numeric, Y:= hash
335
		$clean_cookie = sprintf('%011d', (int) substr($_COOKIE['REMEMBER_KEY'], 0, 11)) . substr($_COOKIE['REMEMBER_KEY'], 11);
336
		return ($clean_cookie == $_COOKIE['REMEMBER_KEY']) ? $this->add_slashes($clean_cookie) : '';
337
	}
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	// Warn user that they have had to many login attemps
340
	function warn() {
341 1709 Luisehahne
//		header('Location: '.$this->warning_url);
342
		$this->send_header($this->warning_url);
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		exit(0);
344
	}
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}