1 files changed, 121 insertions, 0 deletions
diff --git a/engine/start.php b/engine/start.php
new file mode 100644
index 000000000..55b8ffa5b
--- /dev/null
+++ b/engine/start.php
@@ -0,0 +1,121 @@
+<?php
+/**
+ * Bootstraps the Elgg engine.
+ *
+ * This file loads the full Elgg engine, checks the installation
+ * state, and triggers a series of events to finish booting Elgg:
+ * 	- {@elgg_event boot system}
+ * 	- {@elgg_event init system}
+ * 	- {@elgg_event ready system}
+ *
+ * If Elgg is fully uninstalled, the browser will be redirected to an
+ * installation page.
+ *
+ * @see install.php
+ * @package Elgg.Core
+ * @subpackage Core
+ */
+
+/*
+ * No settings means a fresh install
+ */
+if (!file_exists(dirname(__FILE__) . '/settings.php')) {
+	header("Location: install.php");
+	exit;
+}
+
+/**
+ * The time with microseconds when the Elgg engine was started.
+ *
+ * @global float
+ */
+global $START_MICROTIME;
+$START_MICROTIME = microtime(true);
+
+/**
+ * Configuration values.
+ *
+ * The $CONFIG global contains configuration values required
+ * for running Elgg as defined in the settings.php file.
+ *
+ * Plugin authors are encouraged to use elgg_get_config() instead of accessing
+ * the global directly.
+ *
+ * @see elgg_get_config()
+ * @see engine/settings.php
+ * @global stdClass $CONFIG
+ */
+global $CONFIG;
+if (!isset($CONFIG)) {
+	$CONFIG = new stdClass;
+}
+$CONFIG->boot_complete = false;
+
+$lib_dir = dirname(__FILE__) . '/lib/';
+
+// Load the bootstrapping library
+$path = $lib_dir . 'elgglib.php';
+if (!include_once($path)) {
+	echo "Could not load file '$path'. Please check your Elgg installation for all required files.";
+	exit;
+}
+
+// Load the system settings
+if (!include_once(dirname(__FILE__) . "/settings.php")) {
+	$msg = 'Elgg could not load the settings file. It does not exist or there is a file permissions issue.';
+	throw new InstallationException($msg);
+}
+
+
+// load the rest of the library files from engine/lib/
+$lib_files = array(
+	'access.php', 'actions.php', 'admin.php', 'annotations.php', 'cache.php',
+	'calendar.php', 'configuration.php', 'cron.php', 'database.php',
+	'entities.php', 'export.php', 'extender.php', 'filestore.php', 'group.php',
+	'input.php', 'languages.php', 'location.php', 'mb_wrapper.php',
+	'memcache.php', 'metadata.php', 'metastrings.php', 'navigation.php',
+	'notification.php', 'objects.php', 'opendd.php', 'output.php',
+	'pagehandler.php', 'pageowner.php', 'pam.php', 'plugins.php',
+	'private_settings.php', 'relationships.php', 'river.php', 'sessions.php',
+	'sites.php', 'statistics.php', 'system_log.php', 'tags.php',
+	'user_settings.php', 'users.php', 'upgrade.php', 'views.php',
+	'web_services.php', 'widgets.php', 'xml.php', 'xml-rpc.php',
+	
+	// backward compatibility
+	'deprecated-1.7.php', 'deprecated-1.8.php',
+);
+
+foreach ($lib_files as $file) {
+	$file = $lib_dir . $file;
+	elgg_log("Loading $file...");
+	if (!include_once($file)) {
+		$msg = "Could not load $file";
+		throw new InstallationException($msg);
+	}
+}
+
+// Connect to database, load language files, load configuration, init session
+// Plugins can't use this event because they haven't been loaded yet.
+elgg_trigger_event('boot', 'system');
+
+// Load the plugins that are active
+elgg_load_plugins();
+
+// @todo move loading plugins into a single boot function that replaces 'boot', 'system' event
+// and then move this code in there.
+// This validates the view type - first opportunity to do it is after plugins load.
+$view_type = elgg_get_viewtype();
+if (!elgg_is_valid_view_type($view_type)) {
+	elgg_set_viewtype('default');
+}
+
+// @todo deprecate as plugins can use 'init', 'system' event
+elgg_trigger_event('plugins_boot', 'system');
+
+// Complete the boot process for both engine and plugins
+elgg_trigger_event('init', 'system');
+
+$CONFIG->boot_complete = true;
+
+// System loaded and ready
+elgg_trigger_event('ready', 'system');