authcache.php in Authenticated User Page Caching (Authcache) 7.2

Default front controller for user specific content fragments.

Note: This script tries to detect the path to the Drupal root directory automatically on every request and also rewrites values in the $_SERVER variable. This process may fail in some server environments.

On production systems it is therefore highly recommended to install and configure the safe front controller by following the directions given in authcache/modules/authcache_p13n/safe_frontcontroller/authcache.php

File

modules/authcache_p13n/frontcontroller/authcache.php

<?php

/**
 * @file
 * Default front controller for user specific content fragments.
 *
 * Note: This script tries to detect the path to the Drupal root directory
 * automatically on every request and also rewrites values in the $_SERVER
 * variable. This process may fail in some server environments.
 *
 * On production systems it is therefore highly recommended to install and
 * configure the safe front controller by following the directions given in
 * authcache/modules/authcache_p13n/safe_frontcontroller/authcache.php
 */

// Detect root directory of the Drupal installation.
$__file__ = isset($_SERVER['SCRIPT_FILENAME']) ? $_SERVER['SCRIPT_FILENAME'] : __FILE__;
if ($__file__[0] !== '/') {
  $__file__ = str_replace(DIRECTORY_SEPARATOR, '/', $__file__);
}
$drupalroot = preg_replace('#(/(sites|profiles)/([^/]+))?/modules(/.*)?/authcache_p13n/frontcontroller/authcache.php$#', '', $__file__);
if ($drupalroot === $__file__) {
  trigger_error('Authcache P13n front controller: failed to locate Drupal root directory', E_USER_ERROR);
  exit;
}

// Relocate contents of $_SERVER variable to DRUPAL_ROOT by removing path
// components pointing to the authcache front controller.
$preg = '|' . preg_quote(substr($__file__, strlen($drupalroot) + 1), '|') . '|';
foreach ($_SERVER as $key => $value) {
  $_SERVER[$key] = preg_replace($preg, 'authcache.php', $value);
}

// Change working directory and define the essential DRUPAL_ROOT constant.
chdir($drupalroot);
define('DRUPAL_ROOT', $drupalroot);
define('AUTHCACHE_P13N_ROOT', dirname(dirname($__file__)));

// Load settings.php
require_once DRUPAL_ROOT . '/includes/bootstrap.inc';
require_once AUTHCACHE_P13N_ROOT . '/includes/frontcontroller.inc';
$req = authcache_p13n_frontcontroller_prepare_request();
drupal_bootstrap(DRUPAL_BOOTSTRAP_SESSION);
authcache_p13n_frontcontroller_handle_request($req);

Constants

Name	Description
AUTHCACHE_P13N_ROOT
DRUPAL_ROOT