aboutsummaryrefslogtreecommitdiff
path: root/upgrade.php
diff options
context:
space:
mode:
Diffstat (limited to 'upgrade.php')
-rw-r--r--upgrade.php67
1 files changed, 67 insertions, 0 deletions
diff --git a/upgrade.php b/upgrade.php
new file mode 100644
index 000000000..c5f158c61
--- /dev/null
+++ b/upgrade.php
@@ -0,0 +1,67 @@
+<?php
+/**
+ * Elgg upgrade script.
+ *
+ * This script triggers any necessary upgrades. If the site has been upgraded
+ * to the most recent version of the code, no upgrades are run and the caches
+ * are flushed. If you would prefer that this script is not accessible to others
+ * after an upgrade, you can delete it. Future versions of Elgg will include a
+ * new version of the script. Deleting the script is not a requirement and
+ * leaving it behind does not affect the security of the site.
+ *
+ * Upgrades use a table {db_prefix}upgrade_lock as a mutex to prevent concurrent upgrades.
+ *
+ * @package Elgg.Core
+ * @subpackage Upgrade
+ */
+
+// we want to know if an error occurs
+ini_set('display_errors', 1);
+
+define('UPGRADING', 'upgrading');
+require_once(dirname(__FILE__) . "/engine/start.php");
+
+if (get_input('upgrade') == 'upgrade') {
+ // prevent someone from running the upgrade script in parallel (see #4643)
+ if (!_elgg_upgrade_lock()) {
+ register_error(elgg_echo('upgrade:locked'));
+ forward();
+ }
+
+ // disable the system log for upgrades to avoid exceptions when the schema changes.
+ elgg_unregister_event_handler('log', 'systemlog', 'system_log_default_logger');
+ elgg_unregister_event_handler('all', 'all', 'system_log_listener');
+
+ if (elgg_get_unprocessed_upgrades()) {
+ version_upgrade();
+ }
+
+ // turn off time limit so plugins that have upgrade scripts aren't interrupted
+ set_time_limit(0);
+ elgg_trigger_event('upgrade', 'system', null);
+ elgg_invalidate_simplecache();
+ elgg_reset_system_cache();
+
+ _elgg_upgrade_unlock();
+
+} else {
+ // if upgrading from < 1.8.0, check for the core view 'welcome' and bail if it's found.
+ // see http://trac.elgg.org/ticket/3064
+ // we're not checking the view itself because it's likely themes will override this view.
+ // we're only concerned with core files.
+ $welcome = dirname(__FILE__) . '/views/default/welcome.php';
+ if (file_exists($welcome)) {
+ elgg_set_viewtype('failsafe');
+ // can't have pretty messages because we don't know the state of the views.
+ $content = elgg_echo('upgrade:unable_to_upgrade_info');
+ $title = elgg_echo('upgrade:unable_to_upgrade');
+
+ echo elgg_view_page($title, $content);
+ exit;
+ }
+
+ echo elgg_view_page(elgg_echo('upgrading'), '', 'upgrade');
+ exit;
+}
+
+forward();