<?php
/**
 * ---------------------------------------------------------------------
 * GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2015-2021 Teclib' and contributors.
 *
 * http://glpi-project.org
 *
 * based on GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2003-2014 by the INDEPNET Development Team.
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * GLPI is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GLPI 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
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GLPI. If not, see <http://www.gnu.org/licenses/>.
 * ---------------------------------------------------------------------
 */

if (!defined('GLPI_ROOT')) {
   define('GLPI_ROOT', dirname(__DIR__));
}

include_once GLPI_ROOT . '/inc/based_config.php';

// Init Timer to compute time of display
$TIMER_DEBUG = new Timer();
$TIMER_DEBUG->start();


/// TODO try to remove them if possible
include_once (GLPI_ROOT . "/inc/db.function.php");

// Standard includes
include_once (GLPI_ROOT . "/inc/config.php");

// Security of PHP_SELF
$_SERVER['PHP_SELF'] = Html::cleanParametersURL($_SERVER['PHP_SELF']);

// Load Language file
Session::loadLanguage();

if (isset($_SESSION['glpi_use_mode'])
    && ($_SESSION['glpi_use_mode'] == Session::DEBUG_MODE)) {
   $SQL_TOTAL_REQUEST    = 0;
   $DEBUG_SQL = [
      'queries' => [],
      'errors'  => [],
      'times'   => [],
   ];
   $DEBUG_AUTOLOAD       = [];
}

// Security system
if (isset($_POST)) {
   $_UPOST = $_POST; //keep raw, as a workaround
   if (isset($_POST['_glpi_simple_form'])) {
      $_POST = array_map('urldecode', $_POST);
   }
   $_POST = Toolbox::sanitize($_POST);
}
if (isset($_GET)) {
   $_UGET = $_GET; //keep raw, as a workaround
   $_GET  = Toolbox::sanitize($_GET);
}
if (isset($_REQUEST)) {
   $_UREQUEST = $_REQUEST; //keep raw, as a workaround
   $_REQUEST  = Toolbox::sanitize($_REQUEST);
}
if (isset($_FILES)) {
   $_UFILES = $_FILES; //keep raw, as a workaround
   foreach ($_FILES as &$file) {
      $file['name'] = Toolbox::addslashes_deep($file['name']);
      $file['name'] = Toolbox::clean_cross_side_scripting_deep($file['name']);
   }
}
unset($file);

// Mark if Header is loaded or not :
$HEADER_LOADED = false;
$FOOTER_LOADED = false;
if (isset($AJAX_INCLUDE)) {
   $HEADER_LOADED = true;
}

/* On startup, register all plugins configured for use. */
if (!isset($PLUGINS_INCLUDED)) {
   // PLugin already included
   $PLUGINS_INCLUDED = 1;
   $PLUGINS_EXCLUDED = isset($PLUGINS_EXCLUDED) ? $PLUGINS_EXCLUDED : [];
   $LOADED_PLUGINS   = [];
   $plugin           = new Plugin();
   $plugin->init(true, $PLUGINS_EXCLUDED);
}


if (!isset($_SESSION["MESSAGE_AFTER_REDIRECT"])) {
   $_SESSION["MESSAGE_AFTER_REDIRECT"]=[];
}

// Manage force tab
if (isset($_REQUEST['forcetab'])) {
   if (preg_match('/\/plugins\/([a-zA-Z]+)\/front\/([a-zA-Z]+).form.php/', $_SERVER['PHP_SELF'], $matches)) {
      $itemtype = 'plugin'.$matches[1].$matches[2];
      Session::setActiveTab($itemtype, $_REQUEST['forcetab']);
   } else if (preg_match('/([a-zA-Z]+).form.php/', $_SERVER['PHP_SELF'], $matches)) {
      $itemtype = $matches[1];
      Session::setActiveTab($itemtype, $_REQUEST['forcetab']);
   } else if (preg_match('/\/plugins\/([a-zA-Z]+)\/front\/([a-zA-Z]+).php/', $_SERVER['PHP_SELF'], $matches)) {
      $itemtype = 'plugin'.$matches[1].$matches[2];
      Session::setActiveTab($itemtype, $_REQUEST['forcetab']);
   } else if (preg_match('/([a-zA-Z]+).php/', $_SERVER['PHP_SELF'], $matches)) {
      $itemtype = $matches[1];
      Session::setActiveTab($itemtype, $_REQUEST['forcetab']);
   }
}
// Manage tabs
if (isset($_REQUEST['glpi_tab']) && isset($_REQUEST['itemtype'])) {
   Session::setActiveTab($_REQUEST['itemtype'], $_REQUEST['glpi_tab']);
}
// Override list-limit if choosen
if (isset($_REQUEST['glpilist_limit'])) {
   $_SESSION['glpilist_limit'] = $_REQUEST['glpilist_limit'];
}

// Security : Check HTTP_REFERRER : need to be in GLPI.
if (!defined('DO_NOT_CHECK_HTTP_REFERER')
    && !isCommandLine()
    && isset($_POST) && is_array($_POST) && count($_POST)) {
   Toolbox::checkValidReferer();
}

// Security : check CSRF token
if (GLPI_USE_CSRF_CHECK
    && !isAPI()
    && isset($_POST) && is_array($_POST) && count($_POST)) {
   if (preg_match(':'.$CFG_GLPI['root_doc'].'(/(plugins|marketplace)/[^/]*|)/ajax/:', $_SERVER['REQUEST_URI']) === 1) {
      // Keep CSRF token as many AJAX requests may be made at the same time.
      // This is due to the fact that read operations are often made using POST method (see #277).
      define('GLPI_KEEP_CSRF_TOKEN', true);

      // For AJAX requests, check CSRF token located into "X-Glpi-Csrf-Token" header.
      Session::checkCSRF(['_glpi_csrf_token' => $_SERVER['HTTP_X_GLPI_CSRF_TOKEN'] ?? '']);
   } else {
      Session::checkCSRF($_POST);
   }
}
// SET new global Token
$CURRENTCSRFTOKEN = '';
