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 = $_SESSION["wa_current_user"]->old_db ?
  58                          _("Security settings have not been defined for your user account.")
  59                                 . "<br>" . _("Please contact your system administrator.")
  60                         : _("Please remove \$security_groups and \$security_headings arrays from config.php file!");
  61
  62                 display_error($msg);
  63                 end_page();
  64                 kill_login();
  65                 exit;
  66         }
  67
  68         if (!$_SESSION["wa_current_user"]->can_access_page($page_security))
  69         {
  70
  71                 echo "<center><br><br><br><b>";
  72                 echo _("The security settings on your account do not permit you to access this function");
  73                 echo "</b>";
  74                 echo "<br><br><br><br></center>";
  75                 end_page();
  76                 exit;
  77         }
  78 }
  79 /*
  80         Helper function for setting page security level depeding on
  81         GET start variable and/or some value stored in session variable.
  82         Before the call $page_security should be set to default page_security value.
  83 */
  84 function set_page_security($value=null, $trans = array(), $gtrans = array())
  85 {
  86         global $page_security;
  87
  88         // first check is this is not start page call
  89         foreach($gtrans as $key => $area)
  90                 if (isset($_GET[$key])) {
  91                         $page_security = $area;
  92                         return;
  93                 }
  94
  95         // then check session value
  96         if (isset($trans[$value])) {
  97                 $page_security = $trans[$value];
  98                 return;
  99         }
 100 }
 101
 102 //-----------------------------------------------------------------------------
 103 //      Removing magic quotes from nested arrays/variables
 104 //
 105 function strip_quotes($data)
 106 {
 107         if(get_magic_quotes_gpc()) {
 108                 if(is_array($data)) {
 109                         foreach($data as $k => $v) {
 110                                 $data[$k] = strip_quotes($data[$k]);
 111                         }
 112                 } else
 113                         return stripslashes($data);
 114         }
 115         return $data;
 116 }
 117
 118 //============================================================================
 119 //
 120 //
 121 function login_timeout()
 122 {
 123         // skip timeout on logout page
 124         if ($_SESSION["wa_current_user"]->logged) {
 125                 $tout = $_SESSION["wa_current_user"]->timeout;
 126                 if ($tout && (time() > $_SESSION["wa_current_user"]->last_act + $tout))
 127                 {
 128                         $_SESSION["wa_current_user"]->logged = false;
 129                 }
 130                 $_SESSION["wa_current_user"]->last_act = time();
 131         }
 132 }
 133 //============================================================================
 134 if (!isset($path_to_root))
 135 {
 136         $path_to_root = ".";
 137 }
 138
 139 // Prevent register_globals vulnerability
 140 if (isset($_GET['path_to_root']) || isset($_POST['path_to_root']))
 141         die("Restricted access");
 142
 143 include_once($path_to_root . "/includes/current_user.inc");
 144 include_once($path_to_root . "/frontaccounting.php");
 145 include_once($path_to_root . "/admin/db/security_db.inc");
 146 include_once($path_to_root . "/includes/lang/language.php");
 147 include_once($path_to_root . "/config_db.php");
 148 include_once($path_to_root . "/includes/ajax.inc");
 149 include_once($path_to_root . "/includes/ui/ui_msgs.inc");
 150
 151 /*
 152         Uncomment the setting below when using FA on shared hosting
 153         to avoid unexpeced session timeouts.
 154         Make sure this directory exists and is writable!
 155 */
 156 //ini_set('session.save_path', dirname(__FILE__).'/../tmp/');
 157
 158 ini_set('session.gc_maxlifetime', 36000); // 10hrs
 159
 160 session_name('FA'.md5(dirname(__FILE__)));
 161 session_start();
 162
 163 // this is to fix the "back-do-you-want-to-refresh" issue - thanx PHPFreaks
 164 header("Cache-control: private");
 165
 166 get_text_init();
 167
 168 // Page Initialisation
 169 if (!isset($_SESSION['language']) || !method_exists($_SESSION['language'], 'set_language'))
 170 {
 171         $l = array_search_value($dflt_lang, $installed_languages,  'code');
 172         $_SESSION['language'] = new language($l['name'], $l['code'], $l['encoding'],
 173          isset($l['rtl']) ? 'rtl' : 'ltr');
 174 }
 175
 176 $_SESSION['language']->set_language($_SESSION['language']->code);
 177
 178 // include $Hooks object if locale file exists
 179 if (file_exists($path_to_root . "/lang/".$_SESSION['language']->code."/locale.inc"))
 180 {
 181         include_once($path_to_root . "/lang/".$_SESSION['language']->code."/locale.inc");
 182         $Hooks = new Hooks();
 183 }
 184
 185 include_once($path_to_root . "/includes/access_levels.inc");
 186 include_once($path_to_root . "/config.php");
 187 include_once($path_to_root . "/includes/main.inc");
 188
 189 // Ajax communication object
 190 $Ajax = new Ajax();
 191
 192 // js/php validation rules container
 193 $Validate = array();
 194 // bindings for editors
 195 $Editors = array();
 196 // page help. Currently help for function keys.
 197 $Pagehelp = array();
 198
 199 $SysPrefs = new sys_prefs();
 200
 201 $Refs = new references();
 202
 203 // intercept all output to destroy it in case of ajax call
 204 register_shutdown_function('end_flush');
 205 ob_start('output_html',0);
 206
 207 // colect all error msgs
 208 set_error_handler('error_handler' /*, errtypes */);
 209
 210 if (!isset($_SESSION["wa_current_user"]))
 211         $_SESSION["wa_current_user"] = new current_user();
 212
 213 // logout.php is the only page we should have always
 214 // accessable regardless of access level and current login status.
 215 if (strstr($_SERVER['PHP_SELF'], 'logout.php') == false){
 216
 217         login_timeout();
 218
 219         if (!$_SESSION["wa_current_user"]->logged_in())
 220         {
 221                 // Show login screen
 222                 if (!isset($_POST["user_name_entry_field"]) or $_POST["user_name_entry_field"] == "")
 223                 {
 224                         // strip ajax marker from uri, to force synchronous page reload
 225                         $_SESSION['timeout'] = array( 'uri'=>preg_replace('/JsHttpRequest=(?:(\d+)-)?([^&]+)/s',
 226                                         '', @$_SERVER['REQUEST_URI']),
 227                                 'post' => $_POST);
 228
 229                         include($path_to_root . "/access/login.php");
 230                         if (in_ajax())
 231                                 $Ajax->activate('_page_body');
 232                         exit;
 233                 } else {
 234
 235                         $succeed = isset($db_connections[$_POST["company_login_name"]]) &&
 236                                 $_SESSION["wa_current_user"]->login($_POST["company_login_name"],
 237                                 $_POST["user_name_entry_field"], md5($_POST["password"]));
 238                         // select full vs fallback ui mode on login
 239                         $_SESSION["wa_current_user"]->ui_mode = $_POST['ui_mode'];
 240                         if (!$succeed)
 241                         {
 242                         // Incorrect password
 243                                 login_fail();
 244                         }
 245                         $lang = &$_SESSION['language'];
 246                         $lang->set_language($_SESSION['language']->code);
 247                 }
 248         } else
 249                 set_global_connection();
 250
 251         if (!$_SESSION["wa_current_user"]->old_db)
 252                 include_once($path_to_root . '/company/'.user_company().'/installed_extensions.php');
 253
 254         if (!isset($_SESSION["App"])) {
 255                 $_SESSION["App"] = new front_accounting();
 256                 $_SESSION["App"]->init();
 257         }
 258 }
 259
 260 // POST vars cleanup needed for direct reuse.
 261 // We quote all values later with db_escape() before db update.
 262         $_POST = strip_quotes($_POST);
 263
 264 ?>