<?php /** * Elgg version library. * Contains code for handling versioning and upgrades. * * @package Elgg * @subpackage Core * @link http://elgg.org/ */ /** * Run any php upgrade scripts which are required * * @param int $version Version upgrading from. * @param bool $quiet Suppress errors. Don't use this. */ function upgrade_code($version, $quiet = FALSE) { global $CONFIG; // Elgg and its database must be installed to upgrade it! if (!is_db_installed() || !is_installed()) { return FALSE; } $version = (int) $version; if ($handle = opendir($CONFIG->path . 'engine/lib/upgrades/')) { $upgrades = array(); while ($updatefile = readdir($handle)) { // Look for upgrades and add to upgrades list if (!is_dir($CONFIG->path . 'engine/lib/upgrades/' . $updatefile)) { if (preg_match('/^([0-9]{10})\.(php)$/', $updatefile, $matches)) { $core_version = (int) $matches[1]; if ($core_version > $version) { $upgrades[] = $updatefile; } } } } // Sort and execute asort($upgrades); if (sizeof($upgrades) > 0) { foreach($upgrades as $upgrade) { // hide all errors. if ($quiet) { // hide include errors as well as any exceptions that might happen try { if (!@include($CONFIG->path . 'engine/lib/upgrades/' . $upgrade)) { error_log($e->getmessage()); } } catch (Exception $e) { error_log($e->getmessage()); } } else { include($CONFIG->path . 'engine/lib/upgrades/' . $upgrade); } } } return TRUE; } return FALSE; } /** * Get the current version information * * @param true|false $humanreadable Whether to return a human readable version (default: false) * @return string|false Depending on success */ function get_version($humanreadable = false) { global $CONFIG; if (include($CONFIG->path . "version.php")) { return (!$humanreadable) ? $version : $release; } return FALSE; } /** * Determines whether or not the database needs to be upgraded. * * @return true|false Depending on whether or not the db version matches the code version */ function version_upgrade_check() { $dbversion = (int) datalist_get('version'); $version = get_version(); if ($version > $dbversion) { return TRUE; } return FALSE; } /** * Upgrades Elgg * */ function version_upgrade() { $dbversion = (int) datalist_get('version'); // No version number? Oh snap...this is an upgrade from a clean installation < 1.7. // Run all upgrades without error reporting and hope for the best. // See http://trac.elgg.org/elgg/ticket/1432 for more. $quiet = !$dbversion; // Upgrade database if (db_upgrade($dbversion, '', $quiet)) { system_message(elgg_echo('upgrade:db')); } // Upgrade core if (upgrade_code($dbversion, $quiet)) { system_message(elgg_echo('upgrade:core')); } // Now we trigger an event to give the option for plugins to do something $upgrade_details = new stdClass; $upgrade_details->from = $dbversion; $upgrade_details->to = get_version(); trigger_elgg_event('upgrade', 'upgrade', $upgrade_details); // Update the version datalist_set('version', get_version()); }