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   1  <?php
   2  
   3  /**
   4   * @package     Joomla.Administrator
   5   * @subpackage  com_admin
   6   *
   7   * @copyright   Copyright (C) 2005 - 2020 Open Source Matters, Inc. All rights reserved.
   8   * @license     GNU General Public License version 2 or later; see LICENSE.txt
   9   */
  10  
  11  use Joomla\CMS\Factory;
  12  use Joomla\CMS\Filesystem\File;
  13  use Joomla\CMS\Filesystem\Path;
  14  use Joomla\CMS\Language\Text;
  15  use Joomla\Registry\Registry;
  16  use Joomla\Utilities\ArrayHelper;
  17  
  18  // phpcs:disable PSR1.Files.SideEffects
  19  \defined('_JEXEC') or die;
  20  // phpcs:enable PSR1.Files.SideEffects
  21  
  22  /**
  23   * Notifies users of the new Behind Load Balancer option in Global Config, if we detect they might be behind a proxy
  24   *
  25   * @return  boolean
  26   *
  27   * @since   3.9.26
  28   */
  29  function admin_postinstall_behindproxy_condition()
  30  {
  31      $app = Factory::getApplication();
  32  
  33      if ($app->get('behind_loadbalancer', '0')) {
  34          return false;
  35      }
  36  
  37      if (array_key_exists('HTTP_X_FORWARDED_FOR', $_SERVER) && !empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
  38          return true;
  39      }
  40  
  41      if (array_key_exists('HTTP_CLIENT_IP', $_SERVER) && !empty($_SERVER['HTTP_CLIENT_IP'])) {
  42          return true;
  43      }
  44  
  45      return false;
  46  }
  47  
  48  
  49  /**
  50   * Enables the Behind Load Balancer setting in Global Configuration
  51   *
  52   * @return  void
  53   *
  54   * @since   3.9.26
  55   */
  56  function behindproxy_postinstall_action()
  57  {
  58      $prev = ArrayHelper::fromObject(new JConfig());
  59      $data = array_merge($prev, array('behind_loadbalancer' => '1'));
  60  
  61      $config = new Registry($data);
  62  
  63      // Set the configuration file path.
  64      $file = JPATH_CONFIGURATION . '/configuration.php';
  65  
  66      // Attempt to make the file writeable
  67      if (Path::isOwner($file) && !Path::setPermissions($file, '0644')) {
  68          Factory::getApplication()->enqueueMessage(Text::_('COM_CONFIG_ERROR_CONFIGURATION_PHP_NOTWRITABLE'), 'error');
  69  
  70          return;
  71      }
  72  
  73      // Attempt to write the configuration file as a PHP class named JConfig.
  74      $configuration = $config->toString('PHP', array('class' => 'JConfig', 'closingtag' => false));
  75  
  76      if (!File::write($file, $configuration)) {
  77          Factory::getApplication()->enqueueMessage(Text::_('COM_CONFIG_ERROR_WRITE_FAILED'), 'error');
  78  
  79          return;
  80      }
  81  
  82      // Attempt to make the file unwriteable
  83      if (Path::isOwner($file) && !Path::setPermissions($file, '0444')) {
  84          Factory::getApplication()->enqueueMessage(Text::_('COM_CONFIG_ERROR_CONFIGURATION_PHP_NOTUNWRITABLE'), 'error');
  85      }
  86  }