includes/session.inc

   1 <?php
   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 ***********************************************************************/
  12 function output_html($text)
  13 {
  14         global $before_box, $Ajax, $messages;
  15         // Fatal errors are not send to error_handler,
  16         // so we must check the output
  17         if ($text && preg_match('/\bFatal error(<.*?>)?:(.*)/i', $text, $m)) {
  18                 $Ajax->aCommands = array();  // Don't update page via ajax on errors
  19                 $text = preg_replace('/\bFatal error(<.*?>)?:(.*)/i','', $text);
  20                 $messages[] = array(E_ERROR, $m[2], null, null);
  21         }
  22         $Ajax->run();
  23         return  in_ajax() ? fmt_errors() : ($before_box.fmt_errors().$text);
  24 }
  25 //----------------------------------------------------------------------------------------
  26
  27 function kill_login()
  28 {
  29         session_unset();
  30         session_destroy();
  31 }
  32 //----------------------------------------------------------------------------------------
  33
  34 function login_fail()
  35 {
  36         header("HTTP/1.1 401 Authorization Required");
  37         echo "<center><br><br><font size='5' color='red'><b>" . _("Incorrect Password") . "<b></font><br><br>";
  38         echo "<b>" . _("The user and password combination is not valid for the system.") . "<b><br><br>";
  39
  40         echo _("If you are not an authorized user, please contact your system administrator to obtain an account to enable you to use the system.");
  41         echo "<br><a href='javascript:history.go(-1)'>" . _("Back") . "</a>";
  42         echo "</center>";
  43
  44         kill_login();
  45         die();
  46 }
  47
  48 //----------------------------------------------------------------------------------------
  49
  50 function check_page_security($page_security)
  51 {
  52         if (!$_SESSION["wa_current_user"]->check_user_access())
  53         {
  54                 // notification after upgrade from pre-2.2 version
  55                 $msg = $_SESSION["wa_current_user"]->old_db ?
  56                          _("Security settings have not been defined for your user account.")
  57                                 . "<br>" . _("Please contact your system administrator.")
  58                         : _("Please remove \$security_groups and \$security_headings arrays from config.php file!");
  59
  60                 page(_("Access denied"), false);
  61                         display_error($msg);
  62                 end_page();
  63                 kill_login();
  64                 exit;
  65         }
  66
  67         if (!$_SESSION["wa_current_user"]->can_access_page($page_security))
  68         {
  69                 // no_menu parameter guess here is ugly hack, but works for now.
  70                 // Better solution is to use global switch for menu, set before
  71                 // session.inc inclusion.
  72                 page(_("Access denied"), strpos($_SERVER['PHP_SELF'], '/view/'));
  73
  74                 echo "<center><br><br><br><b>";
  75                 echo _("The security settings on your account do not permit you to access this function");
  76                 echo "</b>";
  77                 echo "<br><br><br><br></center>";
  78                 end_page();
  79                 //kill_login();
  80                 exit;
  81         }
  82 }
  83
  84 //-----------------------------------------------------------------------------
  85 //      Removing magic quotes from nested arrays/variables
  86 //
  87 function strip_quotes($data)
  88 {
  89         if(get_magic_quotes_gpc()) {
  90                 if(is_array($data)) {
  91                         foreach($data as $k => $v) {
  92                                 $data[$k] = strip_quotes($data[$k]);
  93                         }
  94                 } else
  95                         return stripslashes($data);
  96         }
  97         return $data;
  98 }
  99
 100 //============================================================================
 101 //
 102 //
 103 function login_timeout()
 104 {
 105         // skip timeout on logout page
 106         if ($_SESSION["wa_current_user"]->logged
 107                         && !strpos($_SERVER['PHP_SELF'], 'logout.php')) {
 108                 $tout = $_SESSION["wa_current_user"]->timeout;
 109                 if ($tout && (time() > $_SESSION["wa_current_user"]->last_act + $tout))
 110                 {
 111                         $_SESSION["wa_current_user"]->logged = false;
 112                 }
 113                 $_SESSION["wa_current_user"]->last_act = time();
 114         }
 115 }
 116 //============================================================================
 117 if (!isset($path_to_root))
 118 {
 119         $path_to_root = ".";
 120 }
 121
 122 // Prevent register_globals vulnerability
 123 if (isset($_GET['path_to_root']) || isset($_POST['path_to_root']))
 124         die("Restricted access");
 125
 126 include_once($path_to_root . "/frontaccounting.php");
 127 include_once($path_to_root . "/admin/db/security_db.inc");
 128 include_once($path_to_root . "/includes/current_user.inc");
 129 include_once($path_to_root . "/includes/lang/language.php");
 130 include_once($path_to_root . "/config_db.php");
 131 include_once($path_to_root . "/includes/ajax.inc");
 132 include_once($path_to_root . "/includes/ui/ui_msgs.inc");
 133
 134 /*
 135         Uncomment the setting below when using FA on shared hosting
 136         to avoid unexpeced session timeouts.
 137         Make sure this directory exists and is writable!
 138 */
 139 //ini_set('session.save_path', dirname(__FILE__).'/../tmp/');
 140
 141 ini_set('session.gc_maxlifetime', 36000); // 10hrs
 142
 143 session_name('FrontAccounting');
 144 session_start();
 145 // this is to fix the "back-do-you-want-to-refresh" issue - thanx PHPFreaks
 146 header("Cache-control: private");
 147
 148 get_text::init();
 149
 150 // Page Initialisation
 151 if (!isset($_SESSION['languages']))
 152 {
 153         language::load_languages(); // sets also default $_SESSION['language']
 154 }
 155
 156 language::set_language($_SESSION['language']->code);
 157
 158 // include $Hooks object if locale file exists
 159 if(@include_once($path_to_root . "/lang/".$_SESSION['language']->code."/locale.inc"))
 160 {
 161         $Hooks = new Hooks();
 162 }
 163
 164 include_once($path_to_root . "/includes/access_levels.inc");
 165 include_once($path_to_root . "/config.php");
 166 include_once($path_to_root . "/includes/main.inc");
 167
 168 // Ajax communication object
 169 $Ajax =& new Ajax();
 170
 171 // js/php validation rules container
 172 $Validate = array();
 173 // bindings for editors
 174 $Editors = array();
 175 // page help. Currently help for function keys.
 176 $Pagehelp = array();
 177
 178 // intercept all output to destroy it in case of ajax call
 179 register_shutdown_function('end_flush');
 180 ob_start('output_html',0);
 181
 182 // colect all error msgs
 183 set_error_handler('error_handler' /*, errtypes */);
 184
 185 if (!isset($_SESSION["wa_current_user"]))
 186         $_SESSION["wa_current_user"] = new current_user();
 187
 188 set_global_connection();
 189
 190 login_timeout();
 191
 192 if (!$_SESSION["wa_current_user"]->logged_in())
 193 {
 194         // Show login screen
 195         if (!isset($_POST["user_name_entry_field"]) or $_POST["user_name_entry_field"] == "")
 196         {
 197                 if (strstr($_SERVER['PHP_SELF'], 'timeout.php') == false)
 198                         $_SESSION['timeout'] = array( 'uri'=> $_SERVER['REQUEST_URI'],
 199                                 'post' => $_POST);
 200
 201                 if (!in_ajax()) {
 202                         include($path_to_root . "/access/login.php");
 203                 } else {
 204                         // ajax update of current page elements - open login window in popup
 205                         // to not interfere with ajaxified page.
 206                         $Ajax->popup($path_to_root . "/access/timeout.php");
 207                 }
 208                 exit;
 209         } else {
 210                 $succeed = $_SESSION["wa_current_user"]->login($_POST["company_login_name"],
 211                         $_POST["user_name_entry_field"],
 212                         md5($_POST["password"]));
 213                 // select full vs fallback ui mode on login
 214                 $_SESSION["wa_current_user"]->ui_mode = $_POST['ui_mode'];
 215                 if (!$succeed)
 216                 {
 217                         // Incorrect password
 218                         login_fail();
 219                 }
 220                 $lang = $_SESSION['language'];
 221                 language::set_language($_SESSION['language']->code);
 222         }
 223 }
 224
 225 if (!isset($_SESSION["App"])) {
 226         $_SESSION["App"] = new front_accounting();
 227         $_SESSION["App"]->init();
 228 }
 229
 230 //----------------------------------------------------------------------------------------
 231
 232 check_page_security($page_security);
 233
 234 // POST vars cleanup needed for direct reuse.
 235 // We quote all values later with db_escape() before db update.
 236         $_POST = strip_quotes($_POST);
 237
 238 ?>