<?php
/**
* Elgg engine bootstrapper
* Loads the various elements of the Elgg engine
*
* @package Elgg
* @subpackage Core
*/
/*
* Basic profiling
*/
global $START_MICROTIME;
$START_MICROTIME = microtime(true);
/*
* Create global CONFIG object
*/
global $CONFIG;
if (!isset($CONFIG)) {
$CONFIG = new stdClass;
}
$lib_dir = dirname(__FILE__) . '/lib/';
// bootstrapping with required files in a required order
$required_files = array(
'exceptions.php', 'elgglib.php', 'views.php', 'access.php', 'system_log.php', 'export.php',
'sessions.php', 'languages.php', 'input.php', 'install.php', 'cache.php', 'output.php'
);
foreach ($required_files as $file) {
$path = $lib_dir . $file;
if (!include($path)) {
echo "Could not load file '$path'. "
. 'Please check your Elgg installation for all required files.';
exit;
}
}
// Use fallback view until sanitised
$oldview = get_input('view', 'default');
set_input('view', 'failsafe');
// Register the error handler
set_error_handler('__elgg_php_error_handler');
set_exception_handler('__elgg_php_exception_handler');
// attempt to save settings.php and .htaccess if in installation.
if ($sanitised = sanitised()) {
/**
* Load the system settings
*/
if (!include_once(dirname(__FILE__) . "/settings.php")) {
throw new InstallationException("Elgg could not load the settings file.");
}
// Get config
global $CONFIG;
// load the rest of the library files from engine/lib/
$lib_files = array(
// these want to be loaded first apparently?
'database.php', 'actions.php',
'admin.php', 'annotations.php', 'api.php', 'cache.php',
'calendar.php', 'configuration.php', 'cron.php', 'entities.php',
'export.php', 'extender.php', 'filestore.php', 'group.php',
'input.php', 'install.php', 'location.php', 'mb_wrapper.php',
'memcache.php', 'metadata.php', 'metastrings.php', 'notification.php',
'objects.php', 'opendd.php', 'pagehandler.php',
'pageowner.php', 'pam.php', 'plugins.php', 'query.php',
'relationships.php', 'river.php', 'sites.php', 'social.php',
'statistics.php', 'system_log.php', 'tags.php', 'usersettings.php',
'users.php', 'version.php', 'widgets.php', 'xml.php', 'xml-rpc.php'
);
foreach($lib_files as $file) {
$file = $lib_dir . $file;
elgg_log("Loading $file...");
if (!include_once($file)) {
throw new InstallationException("Could not load {$file}");
}
}
} else {
throw new InstallationException(elgg_echo('installation:error:configuration'));
}
// Autodetect some default configuration settings
set_default_config();
// Trigger events
trigger_elgg_event('boot', 'system');
// Check if installed
$installed = is_installed();
$db_installed = is_db_installed();
// Forward if we haven't been installed
if ((!$installed || !$db_installed)
&& !substr_count($_SERVER["PHP_SELF"], "install.php")
&& !substr_count($_SERVER["PHP_SELF"], "css.php")
&& !substr_count($_SERVER["PHP_SELF"], "action_handler.php")) {
header("Location: install.php");
exit;
}
// Load plugins
if (($installed) && ($db_installed) && ($sanitised)) {
load_plugins();
trigger_elgg_event('plugins_boot', 'system');
}
// Trigger system init event for plugins
if (!substr_count($_SERVER["PHP_SELF"], "install.php")
&& !substr_count($_SERVER["PHP_SELF"], "setup.php")) {
trigger_elgg_event('init', 'system');
}
// System booted, return to normal view
if (!elgg_is_valid_view_type($oldview)) {
if (empty($CONFIG->view)) {
$oldview = 'default';
} else {
$oldview = $CONFIG->view;
}
}
set_input('view', $oldview);
// Regenerate the simple cache if expired.
// Don't do it on upgrade, because upgrade does it itself.
if (($installed) && ($db_installed) && !(defined('upgrading') && upgrading == 'upgrading')) {
$lastupdate = datalist_get("simplecache_lastupdate_$oldview");
$lastcached = datalist_get("simplecache_lastcached_$oldview");
if ($lastupdate == 0 || $lastcached < $lastupdate) {
elgg_view_regenerate_simplecache($oldview);
$lastcached = datalist_get("simplecache_lastcached_$oldview");
}
// needs to be set for links in html head
$CONFIG->lastcache = $lastcached;
}
