<?php
- /*--------------------------------------------------\
- | | | session.inc |
- |---------------------------------------------------|
- | front_accounting |
- | http://open-accounting.sourceforge.net/ |
- | by KylieTech Consulting |
- | http://frontaccounting.com/ |
- | by Joe Hunt Consulting |
- \--------------------------------------------------*/
-
- function output_html($text)
+/**********************************************************************
+ Copyright (C) FrontAccounting, LLC.
+ Released under the terms of the GNU General Public License, GPL,
+ as published by the Free Software Foundation, either version 3
+ of the License, or (at your option) any later version.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
+***********************************************************************/
+
+class SessionManager
+{
+ function sessionStart($name, $limit = 0, $path = '/', $domain = null, $secure = null)
{
- global $before_box;
- return in_ajax() ? fmt_errors() : ($before_box.fmt_errors().$text);
+ // Set the cookie name
+ session_name($name);
+
+ // Set SSL level
+ $https = isset($secure) ? $secure : (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off');
+
+ // Set session cookie options
+ session_set_cookie_params($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
+ {
+ $_SESSION = array();
+ session_destroy();
+ session_start();
+ }
}
- if (!isset($path_to_root))
+ function preventHijacking()
{
- $path_to_root = ".";
+ if (!isset($_SESSION['IPaddress']) || !isset($_SESSION['userAgent']))
+ return false;
+
+ if ($_SESSION['IPaddress'] != $_SERVER['REMOTE_ADDR'])
+ return false;
+
+ if ( $_SESSION['userAgent'] != $_SERVER['HTTP_USER_AGENT'])
+ return false;
+
+ return true;
}
- include_once($path_to_root . "/includes/current_user.inc");
+ function regenerateSession()
+ {
+ // If this session is obsolete it means there already is a new id
+ if (isset($_SESSION['OBSOLETE']) && ($_SESSION['OBSOLETE'] == true))
+ return;
-/*
- // Make sure this directory exists and is writable!
- $session_save_path = dirname(__FILE__).'/tmp/';
-*/
+ // Set current session to expire in 10 seconds
+ $_SESSION['OBSOLETE'] = true;
+ $_SESSION['EXPIRES'] = time() + 10;
- $session_save_path = session_save_path();
- if (strpos($session_save_path, ";") !== false)
- $session_save_path = substr($session_save_path, strpos($session_save_path, ";") + 1);
+ // Create new session without destroying the old one
+ session_regenerate_id();
+ // Grab current session ID and close both sessions to allow other scripts to use them
+ $newSession = session_id();
+ session_write_close();
+ // Set session ID to the new one, and start it back up again
- if (isset($session_save_path))
+ session_id($newSession);
+ session_start();
+
+ // Now we unset the obsolete and expiration values for the session we want to keep
+ unset($_SESSION['OBSOLETE']);
+ unset($_SESSION['EXPIRES']);
+ }
+
+ function validateSession()
{
- session_save_path($session_save_path);
- unset($session_save_path);
+ if (isset($_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, $m[2], null, null);
}
- if (!isset($path_to_root) || isset($_GET['path_to_root']) || isset($_POST['path_to_root']))
- die("Restricted access");
- include_once($path_to_root . "/includes/lang/language.php");
- include_once($path_to_root . "/config_db.php");
- include_once($path_to_root . "/config.php");
+ $Ajax->run();
+ return in_ajax() ? fmt_errors() : ($before_box.fmt_errors().$text);
+}
+//----------------------------------------------------------------------------------------
+
+function kill_login()
+{
+ session_unset();
+ session_destroy();
+}
+//----------------------------------------------------------------------------------------
+
+function login_fail()
+{
+ global $path_to_root;
+
+ header("HTTP/1.1 401 Authorization Required");
+ echo "<center><br><br><font size='5' color='red'><b>" . _("Incorrect Password") . "<b></font><br><br>";
+ echo "<b>" . _("The user and password combination is not valid for the system.") . "<b><br><br>";
+ echo _("If you are not an authorized user, please contact your system administrator to obtain an account to enable you to use the system.");
+ echo "<br><a href='$path_to_root/index.php'>" . _("Try again") . "</a>";
+ echo "</center>";
- include_once($path_to_root . "/includes/main.inc");
+ kill_login();
+ die();
+}
- //----------------------------------------------------------------------------------------
+function check_faillog()
+{
+ global $login_delay, $login_faillog, $login_max_attempts;
- function kill_login()
+ $user = $_SESSION["wa_current_user"]->user;
+
+ if (@$login_delay && (@$login_faillog[$user][$_SERVER['REMOTE_ADDR']] >= @$login_max_attempts) && (time() < $login_faillog[$user]['last'] + $login_delay))
+ return true;
+
+ return false;
+}
+/*
+ Simple brute force attack detection is performed before connection to company database is open. Therefore access counters have to be stored in file.
+ Login attempts counter is created for every new user IP, which partialy prevent DOS attacks.
+*/
+function write_login_filelog($login, $result)
+{
+ global $login_faillog, $login_max_attempts, $path_to_root;
+
+ $user = $_SESSION["wa_current_user"]->user;
+
+ $ip = $_SERVER['REMOTE_ADDR'];
+
+ if (!isset($login_faillog[$user][$ip]) || $result) // init or reset on successfull login
+ $login_faillog[$user] = array($ip => 0, 'last' => '');
+
+ if (!$result)
{
- session_unset();
- session_destroy();
+ if ($login_faillog[$user][$ip] < @$login_max_attempts) {
+
+ $login_faillog[$user][$ip]++;
+ } else {
+ $login_faillog[$user][$ip] = 0; // comment out to restart counter only after successfull login.
+ error_log(sprintf(_("Brute force attack on account '%s' detected. Access for non-logged users temporarily blocked." ), $login));
+ }
+ $login_faillog[$user]['last'] = time();
}
- //----------------------------------------------------------------------------------------
+ $msg = "<?php\n";
+ $msg .= "/*\n";
+ $msg .= "Login attempts info.\n";
+ $msg .= "*/\n";
+ $msg .= "\$login_faillog = " .var_export($login_faillog, true). ";\n";
- function login_fail()
+ $filename = $path_to_root."/faillog.php";
+
+ if ((!file_exists($filename) && is_writable($path_to_root)) || is_writable($filename))
{
- echo "<center><br><br><font size='5' color='red'><b>" . _("Incorrect Password") . "<b></font><br><br>";
- echo "<b>" . _("The user and password combination is not valid for the system.") . "<b><br><br>";
+ file_put_contents($filename, $msg);
+ }
+}
- echo _("If you are not an authorized user, please contact your system administrator to obtain an account to enable you to use the system.");
- echo "<br><a href='javascript:history.go(-1)'>" . _("Back") . "</a>";
- echo "</center>";
+//----------------------------------------------------------------------------------------
- kill_login();
- die();
+function check_page_security($page_security)
+{
+ global $SysPrefs;
+
+ $msg = '';
+
+ if (!$_SESSION["wa_current_user"]->check_user_access())
+ {
+ // notification after upgrade from pre-2.2 version
+ $msg = $_SESSION["wa_current_user"]->old_db ?
+ _("Security settings have not been defined for your user account.")
+ . "<br>" . _("Please contact your system administrator.")
+ : _("Please remove \$security_groups and \$security_headings arrays from config.php file!");
+ } elseif (!$_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($msg);
+ end_page(@$_REQUEST['popup']);
+ kill_login();
+ exit;
}
- //----------------------------------------------------------------------------------------
+ if (!$_SESSION["wa_current_user"]->can_access_page($page_security))
+ {
- function check_page_security($page_security)
+ echo "<center><br><br><br><b>";
+ echo _("The security settings on your account do not permit you to access this function");
+ echo "</b>";
+ echo "<br><br><br><br></center>";
+ end_page(@$_REQUEST['popup']);
+ exit;
+ }
+ if (!$_SESSION['SysPrefs']->db_ok
+ && !in_array($page_security, array('SA_SOFTWAREUPGRADE', 'SA_OPEN', 'SA_BACKUP')))
{
- if (!$_SESSION["wa_current_user"]->check_user_access())
- {
- echo "<br><br><br><center>";
- echo "<b>" . _("Security settings have not been defined for your user account.");
- echo "<br>" . _("Please contact your system administrator.") . "</b>";
+ display_error(_('System is blocked after source upgrade until database is updated on System/Software Upgrade page'));
+ end_page();
+ exit;
+ }
- kill_login();
- 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 = $area;
+ return;
}
- if (!$_SESSION["wa_current_user"]->can_access_page($page_security))
+ // then check session value
+ if (isset($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))
{
- page(_("Access denied"));
- echo "<center><br><br><br><b>";
- echo _("The security settings on your account do not permit you to access this function");
- echo "</b>";
- echo "<br><br><a href='javascript:history.go(-1)'>" . _("Back") . "</a>";
- echo "<br><br><br><br>";
- //echo '<script type="text/javascript">';
- //echo 'alert("' . _("The security settings on your account do not permit you to access this function") . '");';
- //echo 'history.go(-1)';
- //echo '</script>'
- end_page();
- //kill_login();
- exit;
+ $_SESSION["wa_current_user"]->logged = false;
}
+ $_SESSION["wa_current_user"]->last_act = time();
}
+}
+//============================================================================
+if (!isset($path_to_root))
+{
+ $path_to_root = ".";
+}
- //----------------------------------------------------------------------------------------
- if (!isset($_SESSION["wa_current_user"]) ||
- (isset($_SESSION["wa_current_user"]) && !$_SESSION["wa_current_user"]->logged_in()))
- {
+//----------------------------------------------------------------------------------------
+// set to reasonable values if not set in config file (pre-2.3.12 installations)
+
+if ((!isset($login_delay)) || ($login_delay < 0))
+ $login_delay = 10;
+
+if ((!isset($login_max_attempts)) || ($login_max_attempts < 0))
+ $login_max_attempts = 3;
+
+
+// Prevent register_globals vulnerability
+if (isset($_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.'/'.$ext['path'].'/hooks.php');
+}
+
+/*
+ Uncomment the setting below when using FA on shared hosting
+ to avoid unexpeced session timeouts.
+ Make sure this directory exists and is writable!
+*/
+// ini_set('session.save_path', dirname(__FILE__).'/../tmp/');
+
+ini_set('session.gc_maxlifetime', 36000); // 10hrs
+ini_set('session.cache_limiter', 'private'); // prevent 'page expired' errors
+
+hook_session_start(@$_POST["company_login_name"]);
+
+$Session_manager = new SessionManager();
+$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();
- $_SESSION["wa_current_user"] = new current_user();
-
- // Show login screen
- if (!isset($_POST["user_name_entry_field"]) or $_POST["user_name_entry_field"] == "")
- {
- include($path_to_root . "/access/login.php");
- exit;
- }
- }
- include_once("ajax.inc");
- $Ajax =& new Ajax();
- // intercept all output to destroy it in case of ajax call
- register_shutdown_function('ob_end_flush');
- ob_start('output_html',0);
- // colect all error msgs
- set_error_handler('error_handler' /*, errtypes */);
-
- if (isset($_POST["user_name_entry_field"]))
- {
- $succeed = $_SESSION["wa_current_user"]->login($_POST["company_login_name"],
- $_POST["user_name_entry_field"],
- md5($_POST["password"]));
-
- if (!$succeed)
+if ($login_delay > 0)
+ @include_once($path_to_root . "/faillog.php");
+
+// Page Initialisation
+if (!isset($_SESSION['wa_current_user']) || !$_SESSION['wa_current_user']->logged_in()
+ || !isset($_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");
+include_once($path_to_root . "/includes/app_entries.inc");
+
+// Ajax communication object
+$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())
+ $Ajax->activate('_page_body');
+ exit;
+ } else {
+ if (isset($_POST["company_login_nickname"]) && !isset($_POST["company_login_name"])) {
+ for ($i = 0; $i < count($db_connections); $i++) {
+ if ($db_connections[$i]["name"] == $_POST["company_login_nickname"]) {
+ $_POST["company_login_name"] = $i;
+ unset($_POST["company_login_nickname"]);
+ break 1; // cannot pass variables to break from PHP v5.4 onwards
+ }
+ }
+ }
+ $succeed = isset($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();
+ login_fail();
+ }
}
- }
-
- // Run with debugging messages for the system administrator(s) but not anyone else
- /*if (in_array(15, $security_groups[$_SESSION["AccessLevel"]])) {
- $debug = 1;
- } else {
- $debug = 0;
- }*/
-
- //----------------------------------------------------------------------------------------
-
- check_page_security($page_security);
+ } else
+ { set_global_connection();
+ if (db_fixed())
+ db_set_encoding($_SESSION['language']->encoding);
+ }
+ if (!isset($_SESSION["App"])) {
+ $_SESSION["App"] = new front_accounting();
+ $_SESSION["App"]->init();
+ }
+}
+$SysPrefs = &$_SESSION['SysPrefs'];
-?>
\ No newline at end of file
+// POST vars cleanup needed for direct reuse.
+// We quote all values later with db_escape() before db update.
+$_POST = strip_quotes($_POST);
projects / fa-stable.git / blobdiff