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administrator/includes/framework.php

@@ -0,0 +1,115 @@
+<?php
+
+/**
+ * @package    Joomla.Administrator
+ *
+ * @copyright  (C) 2005 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license    GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+\defined('_JEXEC') or die;
+
+use Joomla\CMS\Version;
+use Joomla\Utilities\IpHelper;
+
+// System includes
+require_once JPATH_LIBRARIES . '/bootstrap.php';
+
+// Installation check, and check on removal of the install directory
+if (
+    !file_exists(JPATH_CONFIGURATION . '/configuration.php')
+    || (filesize(JPATH_CONFIGURATION . '/configuration.php') < 10)
+    || (file_exists(JPATH_INSTALLATION . '/index.php') && (false === (new Version())->isInDevelopmentState()))
+) {
+    if (!file_exists(JPATH_INSTALLATION . '/index.php')) {
+        echo 'No configuration file found and no installation code available. Exiting...';
+
+        exit;
+    }
+
+    if (JPATH_ROOT === JPATH_PUBLIC) {
+        header('Location: ../installation/index.php');
+
+        exit;
+    }
+
+    echo 'Installation from a public folder is not supported, revert your Server configuration to point at Joomla\'s root folder to continue.';
+
+    exit;
+}
+
+// Pre-Load configuration. Don't remove the Output Buffering due to BOM issues, see JCode 26026
+ob_start();
+require_once JPATH_CONFIGURATION . '/configuration.php';
+ob_end_clean();
+
+// System configuration.
+$config = new JConfig();
+
+// Set the error_reporting, and adjust a global Error Handler
+switch ($config->error_reporting) {
+    case 'default':
+    case '-1':
+        break;
+
+    case 'none':
+    case '0':
+        error_reporting(0);
+
+        break;
+
+    case 'simple':
+        error_reporting(E_ERROR | E_WARNING | E_PARSE);
+        ini_set('display_errors', 1);
+
+        break;
+
+    case 'maximum':
+        error_reporting(E_ALL);
+        ini_set('display_errors', 1);
+
+        break;
+
+    default:
+        error_reporting($config->error_reporting);
+        ini_set('display_errors', 1);
+
+        break;
+}
+
+\define('JDEBUG', $config->debug);
+
+// Check deprecation logging
+if (empty($config->log_deprecated)) {
+    // Reset handler for E_USER_DEPRECATED
+    set_error_handler(null, E_USER_DEPRECATED);
+} else {
+    // Make sure handler for E_USER_DEPRECATED is registered
+    set_error_handler(['Joomla\CMS\Exception\ExceptionHandler', 'handleUserDeprecatedErrors'], E_USER_DEPRECATED);
+}
+
+if (JDEBUG || $config->error_reporting === 'maximum') {
+    // Set new Exception handler with debug enabled
+    $errorHandler->setExceptionHandler(
+        [
+            new \Symfony\Component\ErrorHandler\ErrorHandler(null, true),
+            'renderException',
+        ]
+    );
+}
+
+/**
+ * Correctly set the allowing of IP Overrides if behind a trusted proxy/load balancer.
+ *
+ * We need to do this as high up the stack as we can, as the default in \Joomla\Utilities\IpHelper is to
+ * $allowIpOverride = true which is the wrong default for a generic site NOT behind a trusted proxy/load balancer.
+ */
+if (property_exists($config, 'behind_loadbalancer') && $config->behind_loadbalancer == 1) {
+    // If Joomla is configured to be behind a trusted proxy/load balancer, allow HTTP Headers to override the REMOTE_ADDR
+    IpHelper::setAllowIpOverrides(true);
+} else {
+    // We disable the allowing of IP overriding using headers by default.
+    IpHelper::setAllowIpOverrides(false);
+}
+
+unset($config);