.
***********************************************************************/
class SessionManager
{
function sessionStart($name, $limit = 0, $path = '/', $domain = null, $secure = null)
{
// Set the cookie name
session_name($name);
// Set SSL level
$https = isset($secure) ? $secure : isset($_SERVER['HTTPS']);
// Set session cookie options
session_set_cookie_params($limit, $path, $domain, $https, true);
session_start();
// Make sure the session hasn't expired, and destroy it if it has
if ($this->validateSession())
{
// Check to see if the session is new or a hijacking attempt
if(!$this->preventHijacking())
{
// Reset session data and regenerate id
$_SESSION = array();
$_SESSION['IPaddress'] = $_SERVER['REMOTE_ADDR'];
$_SESSION['userAgent'] = $_SERVER['HTTP_USER_AGENT'];
$this->regenerateSession();
// Give a 5% chance of the session id changing on any request
}
elseif (rand(1, 100) <= 5)
{
$this->regenerateSession();
}
}
else
{
$_SESSION = array();
session_destroy();
session_start();
}
}
function preventHijacking()
{
if (!isset($_SESSION['IPaddress']) || !isset($_SESSION['userAgent']))
return false;
if ($_SESSION['IPaddress'] != $_SERVER['REMOTE_ADDR'])
return false;
if ( $_SESSION['userAgent'] != $_SERVER['HTTP_USER_AGENT'])
return false;
return true;
}
function regenerateSession()
{
// If this session is obsolete it means there already is a new id
if (isset($_SESSION['OBSOLETE']) && ($_SESSION['OBSOLETE'] == true))
return;
// Set current session to expire in 10 seconds
$_SESSION['OBSOLETE'] = true;
$_SESSION['EXPIRES'] = time() + 10;
// Create new session without destroying the old one
session_regenerate_id(false);
// Grab current session ID and close both sessions to allow other scripts to use them
$newSession = session_id();
session_write_close();
// Set session ID to the new one, and start it back up again
session_id($newSession);
session_start();
// Now we unset the obsolete and expiration values for the session we want to keep
unset($_SESSION['OBSOLETE']);
unset($_SESSION['EXPIRES']);
}
function validateSession()
{
if (isset($_SESSION['OBSOLETE']) && !isset($_SESSION['EXPIRES']) )
return false;
if (isset($_SESSION['EXPIRES']) && $_SESSION['EXPIRES'] < time())
return false;
return true;
}
}
function output_html($text)
{
global $before_box, $Ajax, $messages;
// Fatal errors are not send to error_handler,
// so we must check the output
if ($text && preg_match('/\bFatal error(<.*?>)?:(.*)/i', $text, $m)) {
$Ajax->aCommands = array(); // Don't update page via ajax on errors
$text = preg_replace('/\bFatal error(<.*?>)?:(.*)/i','', $text);
$messages[] = array(E_ERROR, $m[2], null, null);
}
$Ajax->run();
return in_ajax() ? fmt_errors() : ($before_box.fmt_errors().$text);
}
//----------------------------------------------------------------------------------------
function kill_login()
{
session_unset();
session_destroy();
}
//----------------------------------------------------------------------------------------
function login_fail()
{
global $path_to_root;
header("HTTP/1.1 401 Authorization Required");
echo "
" . _("Incorrect Password") . "
";
echo "" . _("The user and password combination is not valid for the system.") . "
";
echo _("If you are not an authorized user, please contact your system administrator to obtain an account to enable you to use the system.");
echo "
" . _("Try again") . "";
echo "";
kill_login();
die();
}
//----------------------------------------------------------------------------------------
function check_page_security($page_security)
{
global $SysPrefs;
$msg = '';
if (!$_SESSION["wa_current_user"]->check_user_access())
{
// notification after upgrade from pre-2.2 version
$msg = $_SESSION["wa_current_user"]->old_db ?
_("Security settings have not been defined for your user account.")
. "
" . _("Please contact your system administrator.")
: _("Please remove \$security_groups and \$security_headings arrays from config.php file!");
} elseif (!$_SESSION['SysPrefs']->db_ok && !$_SESSION["wa_current_user"]->can_access('SA_SOFTWAREUPGRADE')) {
$msg = _('Access to application has been blocked until database upgrade is completed by system administrator.');
}
if ($msg){
display_error($msg);
end_page();
kill_login();
exit;
}
if (!$_SESSION["wa_current_user"]->can_access_page($page_security))
{
echo "
";
echo _("The security settings on your account do not permit you to access this function");
echo "";
echo "
";
end_page();
exit;
}
if (!$_SESSION['SysPrefs']->db_ok
&& !in_array($page_security, array('SA_SOFTWAREUPGRADE', 'SA_OPEN', 'SA_BACKUP')))
{
display_error(_('System is blocked after source upgrade until database is updated on System/Software Upgrade page'));
end_page();
exit;
}
}
/*
Helper function for setting page security level depeding on
GET start variable and/or some value stored in session variable.
Before the call $page_security should be set to default page_security value.
*/
function set_page_security($value=null, $trans = array(), $gtrans = array())
{
global $page_security;
// first check is this is not start page call
foreach($gtrans as $key => $area)
if (isset($_GET[$key])) {
$page_security = $area;
return;
}
// then check session value
if (isset($trans[$value])) {
$page_security = $trans[$value];
return;
}
}
//-----------------------------------------------------------------------------
// Removing magic quotes from nested arrays/variables
//
function strip_quotes($data)
{
if(get_magic_quotes_gpc()) {
if(is_array($data)) {
foreach($data as $k => $v) {
$data[$k] = strip_quotes($data[$k]);
}
} else
return stripslashes($data);
}
return $data;
}
function html_cleanup(&$parms)
{
foreach($parms as $name => $value) {
// $value = @html_entity_decode($value, ENT_QUOTES, $_SESSION['language']->encoding);
if (is_array($value))
html_cleanup($parms[$name]);
else
$parms[$name] = @htmlspecialchars($value, ENT_QUOTES, $_SESSION['language']->encoding);
}
reset($parms); // needed for direct key() usage later throughout the sources
}
//============================================================================
//
//
function login_timeout()
{
// skip timeout on logout page
if ($_SESSION["wa_current_user"]->logged) {
$tout = $_SESSION["wa_current_user"]->timeout;
if ($tout && (time() > $_SESSION["wa_current_user"]->last_act + $tout))
{
$_SESSION["wa_current_user"]->logged = false;
}
$_SESSION["wa_current_user"]->last_act = time();
}
}
//============================================================================
if (!isset($path_to_root))
{
$path_to_root = ".";
}
// Prevent register_globals vulnerability
if (isset($_GET['path_to_root']) || isset($_POST['path_to_root']))
die("Restricted access");
include_once($path_to_root . "/includes/errors.inc");
// colect all error msgs
set_error_handler('error_handler' /*, errtypes */);
include_once($path_to_root . "/includes/current_user.inc");
include_once($path_to_root . "/frontaccounting.php");
include_once($path_to_root . "/admin/db/security_db.inc");
include_once($path_to_root . "/includes/lang/language.php");
include_once($path_to_root . "/config_db.php");
include_once($path_to_root . "/includes/ajax.inc");
include_once($path_to_root . "/includes/ui/ui_msgs.inc");
include_once($path_to_root . "/includes/prefs/sysprefs.inc");
include_once($path_to_root . "/includes/hooks.inc");
//
// include all extensions hook files.
//
foreach ($installed_extensions as $ext)
{
if (file_exists($path_to_root.'/'.$ext['path'].'/hooks.php'))
include_once($path_to_root.'/'.$ext['path'].'/hooks.php');
}
/*
Uncomment the setting below when using FA on shared hosting
to avoid unexpeced session timeouts.
Make sure this directory exists and is writable!
*/
// ini_set('session.save_path', dirname(__FILE__).'/../tmp/');
ini_set('session.gc_maxlifetime', 36000); // 10hrs
$Session_manager = new SessionManager();
$Session_manager->sessionStart('FA'.md5(dirname(__FILE__)));
// this is to fix the "back-do-you-want-to-refresh" issue - thanx PHPFreaks
header("Cache-control: private");
include_once($path_to_root . "/config.php");
get_text_init();
// Page Initialisation
if (!isset($_SESSION['language']) || !method_exists($_SESSION['language'], 'set_language'))
{
$l = array_search_value($dflt_lang, $installed_languages, 'code');
$_SESSION['language'] = new language($l['name'], $l['code'], $l['encoding'],
(isset($l['rtl']) && $l['rtl'] === true) ? 'rtl' : 'ltr');
}
$_SESSION['language']->set_language($_SESSION['language']->code);
include_once($path_to_root . "/includes/access_levels.inc");
include_once($path_to_root . "/version.php");
include_once($path_to_root . "/includes/main.inc");
// Ajax communication object
$Ajax = new Ajax();
// js/php validation rules container
$Validate = array();
// bindings for editors
$Editors = array();
// page help. Currently help for function keys.
$Pagehelp = array();
$Refs = new references();
// intercept all output to destroy it in case of ajax call
register_shutdown_function('end_flush');
ob_start('output_html',0);
if (!isset($_SESSION["wa_current_user"]))
$_SESSION["wa_current_user"] = new current_user();
html_cleanup($_GET);
html_cleanup($_POST);
html_cleanup($_REQUEST);
html_cleanup($_SERVER);
// logout.php is the only page we should have always
// accessable regardless of access level and current login status.
if (strstr($_SERVER['PHP_SELF'], 'logout.php') == false){
login_timeout();
if (!$_SESSION["wa_current_user"]->old_db)
include_once($path_to_root . '/company/'.user_company().'/installed_extensions.php');
install_hooks();
if (!$_SESSION["wa_current_user"]->logged_in())
{
// Show login screen
if (!isset($_POST["user_name_entry_field"]) or $_POST["user_name_entry_field"] == "")
{
// strip ajax marker from uri, to force synchronous page reload
$_SESSION['timeout'] = array( 'uri'=>preg_replace('/JsHttpRequest=(?:(\d+)-)?([^&]+)/s',
'', @htmlspecialchars($_SERVER['REQUEST_URI'], ENT_QUOTES, $_SESSION['language']->encoding)),
'post' => $_POST);
include($path_to_root . "/access/login.php");
if (in_ajax())
$Ajax->activate('_page_body');
exit;
} else {
$succeed = isset($db_connections[$_POST["company_login_name"]]) &&
$_SESSION["wa_current_user"]->login($_POST["company_login_name"],
$_POST["user_name_entry_field"], $_POST["password"]);
// select full vs fallback ui mode on login
$_SESSION["wa_current_user"]->ui_mode = $_POST['ui_mode'];
if (!$succeed)
{
// Incorrect password
login_fail();
}
$lang = &$_SESSION['language'];
$lang->set_language($_SESSION['language']->code);
}
} else
set_global_connection();
if (!isset($_SESSION["App"])) {
$_SESSION["App"] = new front_accounting();
$_SESSION["App"]->init();
}
}
$SysPrefs = &$_SESSION['SysPrefs'];
// POST vars cleanup needed for direct reuse.
// We quote all values later with db_escape() before db update.
$_POST = strip_quotes($_POST);
?>