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         global $path_to_root;
  37
  38         header("HTTP/1.1 401 Authorization Required");
  39         echo "<center><br><br><font size='5' color='red'><b>" . _("Incorrect Password") . "<b></font><br><br>";
  40         echo "<b>" . _("The user and password combination is not valid for the system.") . "<b><br><br>";
  41
  42         echo _("If you are not an authorized user, please contact your system administrator to obtain an account to enable you to use the system.");
  43         echo "<br><a href='$path_to_root/index.php'>" . _("Try again") . "</a>";
  44         echo "</center>";
  45
  46         kill_login();
  47         die();
  48 }
  49
  50 //----------------------------------------------------------------------------------------
  51
  52 function check_page_security($page_security)
  53 {
  54         if (!$_SESSION["wa_current_user"]->check_user_access())
  55         {
  56                 // notification after upgrade from pre-2.2 version
  57                 $msg = $_SESSION["wa_current_user"]->old_db ?
  58                          _("Security settings have not been defined for your user account.")
  59                                 . "<br>" . _("Please contact your system administrator.")
  60                         : _("Please remove \$security_groups and \$security_headings arrays from config.php file!");
  61
  62                 page(_("Access denied"), false);
  63                         display_error($msg);
  64                 end_page();
  65                 kill_login();
  66                 exit;
  67         }
  68
  69         if (!$_SESSION["wa_current_user"]->can_access_page($page_security))
  70         {
  71                 // no_menu parameter guess here is ugly hack, but works for now.
  72                 // Better solution is to use global switch for menu, set before
  73                 // session.inc inclusion.
  74                 page(_("Access denied"), strpos($_SERVER['PHP_SELF'], '/view/'));
  75
  76                 echo "<center><br><br><br><b>";
  77                 echo _("The security settings on your account do not permit you to access this function");
  78                 echo "</b>";
  79                 echo "<br><br><br><br></center>";
  80                 end_page();
  81                 //kill_login();
  82                 exit;
  83         }
  84 }
  85
  86 //-----------------------------------------------------------------------------
  87 //      Removing magic quotes from nested arrays/variables
  88 //
  89 function strip_quotes($data)
  90 {
  91         if(get_magic_quotes_gpc()) {
  92                 if(is_array($data)) {
  93                         foreach($data as $k => $v) {
  94                                 $data[$k] = strip_quotes($data[$k]);
  95                         }
  96                 } else
  97                         return stripslashes($data);
  98         }
  99         return $data;
 100 }
 101
 102 //============================================================================
 103 //
 104 //
 105 function login_timeout()
 106 {
 107         // skip timeout on logout page
 108         if ($_SESSION["wa_current_user"]->logged) {
 109                 $tout = $_SESSION["wa_current_user"]->timeout;
 110                 if ($tout && (time() > $_SESSION["wa_current_user"]->last_act + $tout))
 111                 {
 112                         $_SESSION["wa_current_user"]->logged = false;
 113                 }
 114                 $_SESSION["wa_current_user"]->last_act = time();
 115         }
 116 }
 117 //============================================================================
 118 if (!isset($path_to_root))
 119 {
 120         $path_to_root = ".";
 121 }
 122
 123 // Prevent register_globals vulnerability
 124 if (isset($_GET['path_to_root']) || isset($_POST['path_to_root']))
 125         die("Restricted access");
 126
 127 include_once($path_to_root . "/includes/current_user.inc");
 128 include_once($path_to_root . "/frontaccounting.php");
 129 include_once($path_to_root . "/admin/db/security_db.inc");
 130 include_once($path_to_root . "/includes/lang/language.php");
 131 include_once($path_to_root . "/config_db.php");
 132 include_once($path_to_root . "/includes/ajax.inc");
 133 include_once($path_to_root . "/includes/ui/ui_msgs.inc");
 134
 135 /*
 136         Uncomment the setting below when using FA on shared hosting
 137         to avoid unexpeced session timeouts.
 138         Make sure this directory exists and is writable!
 139 */
 140 //ini_set('session.save_path', dirname(__FILE__).'/../tmp/');
 141
 142 ini_set('session.gc_maxlifetime', 36000); // 10hrs
 143
 144 session_name('FrontAccounting');
 145 session_start();
 146 // this is to fix the "back-do-you-want-to-refresh" issue - thanx PHPFreaks
 147 header("Cache-control: private");
 148
 149 get_text_init();
 150
 151 // Page Initialisation
 152 if (!isset($_SESSION['languages']))
 153 {
 154         load_languages(); // sets also default $_SESSION['language']
 155 }
 156
 157 $_SESSION['language']->set_language($_SESSION['language']->code);
 158
 159 // include $Hooks object if locale file exists
 160 if(@include_once($path_to_root . "/lang/".$_SESSION['language']->code."/locale.inc"))
 161 {
 162         $Hooks = new Hooks();
 163 }
 164
 165 include_once($path_to_root . "/includes/access_levels.inc");
 166 include_once($path_to_root . "/config.php");
 167 include_once($path_to_root . "/includes/main.inc");
 168
 169 // Ajax communication object
 170 $Ajax =& new Ajax();
 171
 172 // js/php validation rules container
 173 $Validate = array();
 174 // bindings for editors
 175 $Editors = array();
 176 // page help. Currently help for function keys.
 177 $Pagehelp = array();
 178
 179 $SysPrefs = new sys_prefs();
 180
 181 $Refs = new references();
 182
 183 // intercept all output to destroy it in case of ajax call
 184 register_shutdown_function('end_flush');
 185 ob_start('output_html',0);
 186
 187 // colect all error msgs
 188 set_error_handler('error_handler' /*, errtypes */);
 189
 190 if (!isset($_SESSION["wa_current_user"]))
 191         $_SESSION["wa_current_user"] = new current_user();
 192
 193 set_global_connection();
 194
 195 // logout.php is the only page we should have always
 196 // accessable regardless of access level and current login status.
 197 if (strstr($_SERVER['PHP_SELF'], 'logout.php') == false){
 198
 199         login_timeout();
 200
 201         if (!$_SESSION["wa_current_user"]->logged_in())
 202         {
 203                 // Show login screen
 204                 if (!isset($_POST["user_name_entry_field"]) or $_POST["user_name_entry_field"] == "")
 205                 {
 206                         $_SESSION['timeout'] = array( 'uri'=> $_SERVER['REQUEST_URI'],
 207                                 'post' => $_POST);
 208
 209                         if (!in_ajax()) {
 210                                 include($path_to_root . "/access/login.php");
 211                         } else {
 212                                 // ajax update of current page elements - open login window in popup
 213                                 // to not interfere with ajaxified page.
 214                                 $Ajax->popup($path_to_root . "/access/timeout.php");
 215                         }
 216                         exit;
 217                 } else {
 218                         $succeed = $_SESSION["wa_current_user"]->login($_POST["company_login_name"],
 219                                 $_POST["user_name_entry_field"], md5($_POST["password"]));
 220                         // select full vs fallback ui mode on login
 221                         $_SESSION["wa_current_user"]->ui_mode = $_POST['ui_mode'];
 222                         if (!$succeed)
 223                         {
 224                         // Incorrect password
 225                                 login_fail();
 226                         }
 227                         $lang = &$_SESSION['language'];
 228                         $lang->set_language($_SESSION['language']->code);
 229                 }
 230         }
 231
 232         include_once($path_to_root . '/company/'.user_company().'/installed_extensions.php');
 233
 234         if (!isset($_SESSION["App"])) {
 235                 $_SESSION["App"] = new front_accounting();
 236                 $_SESSION["App"]->init();
 237         }
 238
 239         /*
 240         This call is necessary only at:
 241         . on any page with non-standard security areas
 242         . in security roles editor
 243         To be optmized  after.
 244         */
 245         add_access_extensions();
 246
 247         check_page_security($page_security);
 248 }
 249 // POST vars cleanup needed for direct reuse.
 250 // We quote all values later with db_escape() before db update.
 251         $_POST = strip_quotes($_POST);
 252
 253 ?>