2 /**********************************************************************
3 Copyright (C) FrontAccounting, LLC.
4 Released under the terms of the GNU General Public License, GPL,
5 as published by the Free Software Foundation, either version 3
6 of the License, or (at your option) any later version.
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
10 See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
11 ***********************************************************************/
15 function sessionStart($name, $limit = 0, $path = '/', $domain = null, $secure = null)
17 // Set the cookie name
21 $https = isset($secure) ? $secure : (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off');
23 // Set session cookie options
24 if (version_compare(PHP_VERSION, '5.2', '<')) // avoid failure on older php versions
25 session_set_cookie_params($limit, $path, $domain, $https);
27 session_set_cookie_params($limit, $path, $domain, $https, true);
31 // Make sure the session hasn't expired, and destroy it if it has
32 if ($this->validateSession())
34 // Check to see if the session is new or a hijacking attempt
35 if(!$this->preventHijacking())
37 // Reset session data and regenerate id
39 $_SESSION['IPaddress'] = $_SERVER['REMOTE_ADDR'];
40 $_SESSION['userAgent'] = @$_SERVER['HTTP_USER_AGENT'];
41 $this->regenerateSession();
43 // Give a 5% chance of the session id changing on any request
45 elseif (rand(1, 100) <= 5)
47 $this->regenerateSession();
58 function preventHijacking()
60 if (!isset($_SESSION['IPaddress']) || !isset($_SESSION['userAgent']))
63 if ($_SESSION['IPaddress'] != $_SERVER['REMOTE_ADDR'])
66 if ( $_SESSION['userAgent'] != @$_SERVER['HTTP_USER_AGENT'])
72 function regenerateSession()
74 // If this session is obsolete it means there already is a new id
75 if (isset($_SESSION['OBSOLETE']) && ($_SESSION['OBSOLETE'] == true))
78 // Set current session to expire in 10 seconds
79 $_SESSION['OBSOLETE'] = true;
80 $_SESSION['EXPIRES'] = time() + 10;
82 // Create new session without destroying the old one
83 session_regenerate_id();
84 // Grab current session ID and close both sessions to allow other scripts to use them
85 $newSession = session_id();
86 session_write_close();
87 // Set session ID to the new one, and start it back up again
89 session_id($newSession);
92 // Now we unset the obsolete and expiration values for the session we want to keep
93 unset($_SESSION['OBSOLETE']);
94 unset($_SESSION['EXPIRES']);
97 function validateSession()
99 if (isset($_SESSION['OBSOLETE']) && !isset($_SESSION['EXPIRES']) )
102 if (isset($_SESSION['EXPIRES']) && $_SESSION['EXPIRES'] < time())
109 function output_html($text)
111 global $before_box, $Ajax, $messages;
112 // Fatal errors are not send to error_handler,
113 // so we must check the output
114 if ($text && preg_match('/\bFatal error(<.*?>)?:(.*)/i', $text, $m)) {
115 $Ajax->aCommands = array(); // Don't update page via ajax on errors
116 $text = preg_replace('/\bFatal error(<.*?>)?:(.*)/i','', $text);
117 $messages[] = array(E_ERROR, $m[2], null, null);
120 return in_ajax() ? fmt_errors() : ($before_box.fmt_errors().$text);
122 //----------------------------------------------------------------------------------------
124 function kill_login()
129 //----------------------------------------------------------------------------------------
131 function login_fail()
133 global $path_to_root;
135 header("HTTP/1.1 401 Authorization Required");
136 echo "<center><br><br><font size='5' color='red'><b>" . _("Incorrect Password") . "<b></font><br><br>";
137 echo "<b>" . _("The user and password combination is not valid for the system.") . "<b><br><br>";
139 echo _("If you are not an authorized user, please contact your system administrator to obtain an account to enable you to use the system.");
140 echo "<br><a href='$path_to_root/index.php'>" . _("Try again") . "</a>";
147 function password_reset_fail()
149 global $path_to_root;
151 echo "<center><br><br><font size='5' color='red'><b>" . _("Incorrect Email") . "<b></font><br><br>";
152 echo "<b>" . _("The email address does not exist in the system.") . "<b><br><br>";
154 echo _("If you are not an authorized user, please contact your system administrator to obtain an account to enable you to use the system.");
155 echo "<br><a href='$path_to_root/index.php?reset=1'>" . _("Try again") . "</a>";
162 function password_reset_success()
164 global $path_to_root;
166 echo "<center><br><br><font size='5' color='green'><b>" . _("New password sent") . "<b></font><br><br>";
167 echo "<b>" . _("A new password has been sent to your mailbox.") . "<b><br><br>";
169 echo "<br><a href='$path_to_root/index.php'>" . _("Login here") . "</a>";
176 function check_faillog()
178 global $SysPrefs, $login_faillog;
180 $user = $_SESSION["wa_current_user"]->user;
182 if (@$SysPrefs->login_delay && (@$login_faillog[$user][$_SERVER['REMOTE_ADDR']] >= @$SysPrefs->login_max_attempts) && (time() < $login_faillog[$user]['last'] + $SysPrefs->login_delay))
188 Simple brute force attack detection is performed before connection to company database is open. Therefore access counters have to be stored in file.
189 Login attempts counter is created for every new user IP, which partialy prevent DOS attacks.
191 function write_login_filelog($login, $result)
193 global $login_faillog, $SysPrefs, $path_to_root;
195 $user = $_SESSION["wa_current_user"]->user;
197 $ip = $_SERVER['REMOTE_ADDR'];
199 if (!isset($login_faillog[$user][$ip]) || $result) // init or reset on successfull login
200 $login_faillog[$user] = array($ip => 0, 'last' => '');
204 if ($login_faillog[$user][$ip] < @$SysPrefs->login_max_attempts) {
206 $login_faillog[$user][$ip]++;
208 $login_faillog[$user][$ip] = 0; // comment out to restart counter only after successfull login.
209 error_log(sprintf(_("Brute force attack on account '%s' detected. Access for non-logged users temporarily blocked." ), $login));
211 $login_faillog[$user]['last'] = time();
216 $msg .= "Login attempts info.\n";
218 $msg .= "\$login_faillog = " .var_export($login_faillog, true). ";\n";
220 $filename = $path_to_root."/tmp/faillog.php";
222 if ((!file_exists($filename) && is_writable($path_to_root.'/tmp')) || is_writable($filename))
224 file_put_contents($filename, $msg);
228 //----------------------------------------------------------------------------------------
230 function check_page_security($page_security)
236 if (!$_SESSION["wa_current_user"]->check_user_access())
238 // notification after upgrade from pre-2.2 version
239 $msg = $_SESSION["wa_current_user"]->old_db ?
240 _("Security settings have not been defined for your user account.")
241 . "<br>" . _("Please contact your system administrator.")
242 : _("Please remove \$security_groups and \$security_headings arrays from config.php file!");
243 } elseif (!$_SESSION['SysPrefs']->db_ok && !$_SESSION["wa_current_user"]->can_access('SA_SOFTWAREUPGRADE')) {
244 $msg = _('Access to application has been blocked until database upgrade is completed by system administrator.');
249 end_page(@$_REQUEST['popup']);
254 if (!$_SESSION["wa_current_user"]->can_access_page($page_security))
257 echo "<center><br><br><br><b>";
258 echo _("The security settings on your account do not permit you to access this function");
260 echo "<br><br><br><br></center>";
261 end_page(@$_REQUEST['popup']);
264 if (!$_SESSION['SysPrefs']->db_ok
265 && !in_array($page_security, array('SA_SOFTWAREUPGRADE', 'SA_OPEN', 'SA_BACKUP')))
267 display_error(_('System is blocked after source upgrade until database is updated on System/Software Upgrade page'));
274 Helper function for setting page security level depeding on
275 GET start variable and/or some value stored in session variable.
276 Before the call $page_security should be set to default page_security value.
278 function set_page_security($value=null, $trans = array(), $gtrans = array())
280 global $page_security;
282 // first check is this is not start page call
283 foreach($gtrans as $key => $area)
284 if (isset($_GET[$key])) {
285 $page_security = $area;
289 // then check session value
290 if (isset($trans[$value])) {
291 $page_security = $trans[$value];
296 //-----------------------------------------------------------------------------
297 // Removing magic quotes from nested arrays/variables
299 function strip_quotes($data)
301 if(get_magic_quotes_gpc()) {
302 if(is_array($data)) {
303 foreach($data as $k => $v) {
304 $data[$k] = strip_quotes($data[$k]);
307 return stripslashes($data);
312 function html_cleanup(&$parms)
314 foreach($parms as $name => $value) {
315 // $value = @html_entity_decode($value, ENT_QUOTES, $_SESSION['language']->encoding);
316 if (is_array($value))
317 html_cleanup($parms[$name]);
319 $parms[$name] = @htmlspecialchars($value, ENT_QUOTES, $_SESSION['language']->encoding=='iso-8859-2' ? 'ISO-8859-1' : $_SESSION['language']->encoding);
321 reset($parms); // needed for direct key() usage later throughout the sources
324 //============================================================================
327 function login_timeout()
329 // skip timeout on logout page
330 if ($_SESSION["wa_current_user"]->logged) {
331 $tout = $_SESSION["wa_current_user"]->timeout;
332 if ($tout && (time() > $_SESSION["wa_current_user"]->last_act + $tout))
334 $_SESSION["wa_current_user"]->logged = false;
336 $_SESSION["wa_current_user"]->last_act = time();
339 //============================================================================
340 if (!isset($path_to_root))
345 //----------------------------------------------------------------------------------------
346 // set to reasonable values if not set in config file (pre-2.3.12 installations)
348 if ((!isset($SysPrefs->login_delay)) || ($SysPrefs->login_delay < 0))
349 $SysPrefs->login_delay = 10;
351 if ((!isset($SysPrefs->login_max_attempts)) || ($SysPrefs->login_max_attempts < 0))
352 $SysPrefs->login_max_attempts = 3;
355 // Prevent register_globals vulnerability
356 if (isset($_GET['path_to_root']) || isset($_POST['path_to_root']))
357 die("Restricted access");
359 include_once($path_to_root . "/includes/errors.inc");
360 // colect all error msgs
361 set_error_handler('error_handler' /*, errtypes */);
363 include_once($path_to_root . "/includes/current_user.inc");
364 include_once($path_to_root . "/frontaccounting.php");
365 include_once($path_to_root . "/admin/db/security_db.inc");
366 include_once($path_to_root . "/includes/lang/language.inc");
367 include_once($path_to_root . "/config_db.php");
368 include_once($path_to_root . "/includes/ajax.inc");
369 include_once($path_to_root . "/includes/ui/ui_msgs.inc");
370 include_once($path_to_root . "/includes/prefs/sysprefs.inc");
372 include_once($path_to_root . "/includes/hooks.inc");
374 // include all extensions hook files.
376 foreach ($installed_extensions as $ext)
378 if (file_exists($path_to_root.'/'.$ext['path'].'/hooks.php'))
379 include_once($path_to_root.'/'.$ext['path'].'/hooks.php');
382 $_SESSION['SysPrefs'] = new sys_prefs();
384 $SysPrefs = &$_SESSION['SysPrefs'];
386 if ($SysPrefs->go_debug > 0)
389 error_reporting(E_USER_WARNING|E_USER_ERROR|E_USER_NOTICE);
390 ini_set("display_errors", "On");
392 if ($SysPrefs->error_logfile != '') {
393 ini_set("error_log", $SysPrefs->error_logfile);
394 ini_set("ignore_repeated_errors", "On");
395 ini_set("log_errors", "On");
400 Uncomment the setting below when using FA on shared hosting
401 to avoid unexpeced session timeouts.
402 Make sure this directory exists and is writable!
404 // ini_set('session.save_path', dirname(__FILE__).'/../tmp/');
406 ini_set('session.gc_maxlifetime', 36000); // 10hrs
408 hook_session_start(@$_POST["company_login_name"]);
410 $Session_manager = new SessionManager();
411 $Session_manager->sessionStart('FA'.md5(dirname(__FILE__)));
413 // this is to fix the "back-do-you-want-to-refresh" issue - thanx PHPFreaks
414 header("Cache-control: private");
418 if ($SysPrefs->login_delay > 0)
419 @include_once($path_to_root . "/tmp/faillog.php");
421 // Page Initialisation
422 if (!isset($_SESSION['wa_current_user']) || !$_SESSION['wa_current_user']->logged_in()
423 || !isset($_SESSION['language']) || !method_exists($_SESSION['language'], 'set_language'))
425 $l = array_search_value($dflt_lang, $installed_languages, 'code');
426 $_SESSION['language'] = new language($l['name'], $l['code'], $l['encoding'],
427 (isset($l['rtl']) && $l['rtl'] === true) ? 'rtl' : 'ltr');
430 $_SESSION['language']->set_language($_SESSION['language']->code);
433 include_once($path_to_root . "/includes/access_levels.inc");
434 include_once($path_to_root . "/version.php");
435 include_once($path_to_root . "/includes/main.inc");
436 include_once($path_to_root . "/includes/app_entries.inc");
438 // Ajax communication object
441 // js/php validation rules container
443 // bindings for editors
445 // page help. Currently help for function keys.
448 $Refs = new references();
450 // intercept all output to destroy it in case of ajax call
451 register_shutdown_function('end_flush');
452 ob_start('output_html',0);
454 if (!isset($_SESSION["wa_current_user"]))
455 $_SESSION["wa_current_user"] = new current_user();
458 html_cleanup($_POST);
459 html_cleanup($_REQUEST);
460 html_cleanup($_SERVER);
462 // logout.php is the only page we should have always
463 // accessable regardless of access level and current login status.
464 if (!defined('FA_LOGOUT_PHP_FILE')){
468 if (!$_SESSION["wa_current_user"]->old_db)
469 include_once($path_to_root . '/company/'.user_company().'/installed_extensions.php');
473 if (!$_SESSION["wa_current_user"]->logged_in())
475 if (@$SysPrefs->allow_password_reset && !$SysPrefs->allow_demo_mode
476 && (isset($_GET['reset']) || isset($_POST['email_entry_field']))) {
477 if (!isset($_POST["email_entry_field"])) {
478 include($path_to_root . "/access/password_reset.php");
482 if (isset($_POST["company_login_nickname"]) && !isset($_POST["company_login_name"])) {
483 for ($i = 0; $i < count($db_connections); $i++) {
484 if ($db_connections[$i]["name"] == $_POST["company_login_nickname"]) {
485 $_POST["company_login_name"] = $i;
486 unset($_POST["company_login_nickname"]);
487 break 1; // cannot pass variables to break from PHP v5.4 onwards
491 $_succeed = isset($db_connections[$_POST["company_login_name"]]) &&
492 $_SESSION["wa_current_user"]->reset_password($_POST["company_login_name"],
493 $_POST["email_entry_field"]);
496 password_reset_success();
499 password_reset_fail();
503 if (!isset($_POST["user_name_entry_field"]) or $_POST["user_name_entry_field"] == "")
505 // strip ajax marker from uri, to force synchronous page reload
506 $_SESSION['timeout'] = array( 'uri'=>preg_replace('/JsHttpRequest=(?:(\d+)-)?([^&]+)/s',
507 '', @htmlspecialchars($_SERVER['REQUEST_URI'], ENT_QUOTES, $_SESSION['language']->encoding=='iso-8859-2'
508 ? 'ISO-8859-1' : $_SESSION['language']->encoding)),
511 include($path_to_root . "/access/login.php");
513 $Ajax->activate('_page_body');
516 if (isset($_POST["company_login_nickname"]) && !isset($_POST["company_login_name"])) {
517 for ($i = 0; $i < count($db_connections); $i++) {
518 if ($db_connections[$i]["name"] == $_POST["company_login_nickname"]) {
519 $_POST["company_login_name"] = $i;
520 unset($_POST["company_login_nickname"]);
521 break 1; // cannot pass variables to break from PHP v5.4 onwards
525 $succeed = isset($db_connections[$_POST["company_login_name"]]) &&
526 $_SESSION["wa_current_user"]->login($_POST["company_login_name"],
527 $_POST["user_name_entry_field"], $_POST["password"]);
528 // select full vs fallback ui mode on login
529 $_SESSION["wa_current_user"]->ui_mode = $_POST['ui_mode'];
532 // Incorrect password
535 elseif(isset($_SESSION['timeout']) && !$_SESSION['timeout']['post'])
537 // in case of GET request redirect to avoid confirmation dialog
538 // after return from menu option
539 header("HTTP/1.1 303 See Other");
540 header("Location: ".$_SESSION['timeout']['uri']);
543 $lang = &$_SESSION['language'];
544 $lang->set_language($_SESSION['language']->code);
547 { set_global_connection();
549 db_set_encoding($_SESSION['language']->encoding);
552 if (!isset($_SESSION["App"])) {
553 $_SESSION["App"] = new front_accounting();
554 $_SESSION["App"]->init();
559 // POST vars cleanup needed for direct reuse.
560 // We quote all values later with db_escape() before db update.
561 $_POST = strip_quotes($_POST);