-$cron_type = request_var('cron_type', '');

-$use_shutdown_function = (@function_exists('register_shutdown_function')) ? true : false;

-// Output transparent gif

-header('Cache-Control: no-cache');

-header('Content-type: image/gif');

-header('Content-length: 43');

-echo base64_decode('R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');

-

-// test without flush ;)

-// flush();

-

-//

-if (!isset($config['cron_lock']))

-{

- set_config('cron_lock', '0', true);

-// make sure cron doesn't run multiple times in parallel

-if ($config['cron_lock'])

-{

- // if the other process is running more than an hour already we have to assume it

- // aborted without cleaning the lock

- $time = explode(' ', $config['cron_lock']);

- $time = $time[0];

-

- if ($time + 3600 >= time())

- {

- exit;

-define('CRON_ID', time() . ' ' . unique_id());

-

-$sql = 'UPDATE ' . CONFIG_TABLE . "

- SET config_value = '" . $db->sql_escape(CRON_ID) . "'

- WHERE config_name = 'cron_lock' AND config_value = '" . $db->sql_escape($config['cron_lock']) . "'";

-$db->sql_query($sql);

-

-// another cron process altered the table between script start and UPDATE query so exit

-if ($db->sql_affectedrows() != 1)

-{

- exit;

-}

-

-/**

-* Run cron-like action

-* Real cron-based layer will be introduced in 3.2

-*/

-switch ($cron_type)

-{

- case 'queue':

-

- if (time() - $config['queue_interval'] <= $config['last_queue_run'] || !file_exists($phpbb_root_path . 'cache/queue.' . $phpEx))

- {

- break;

- }

-

- // A user reported using the mail() function while using shutdown does not work. We do not want to risk that.

- if ($use_shutdown_function && !$config['smtp_delivery'])

- {

- $use_shutdown_function = false;

- }

-

- include_once($phpbb_root_path . 'includes/functions_messenger.' . $phpEx);

- $queue = new queue();

-

- if ($use_shutdown_function)

- {

- register_shutdown_function(array(&$queue, 'process'));

- }

- else

- {

- $queue->process();

- }

-

- break;

-

- case 'tidy_cache':

-

- if (time() - $config['cache_gc'] <= $config['cache_last_gc'] || !method_exists($cache, 'tidy'))

- {

- break;

- }

-

- if ($use_shutdown_function)

- {

- register_shutdown_function(array(&$cache, 'tidy'));

- }

- else

- {

- $cache->tidy();

- }

-

- break;

-

- case 'tidy_search':

- // Select the search method

- $search_type = basename($config['search_type']);

-

- if (time() - $config['search_gc'] <= $config['search_last_gc'] || !file_exists($phpbb_root_path . 'includes/search/' . $search_type . '.' . $phpEx))

- {

- break;

- }

-

- include_once("{$phpbb_root_path}includes/search/$search_type.$phpEx");

-

- // We do some additional checks in the module to ensure it can actually be utilised

- $error = false;

- $search = new $search_type($error);

-

- if ($error)

- {

- break;

- }

-

- if ($use_shutdown_function)

- {

- register_shutdown_function(array(&$search, 'tidy'));

- }

- else

- {

- $search->tidy();

- }

-

- break;

-

- case 'tidy_warnings':

-

- if (time() - $config['warnings_gc'] <= $config['warnings_last_gc'])

- {

- break;

- }

-

- include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);

-

- if ($use_shutdown_function)

- {

- register_shutdown_function('tidy_warnings');

- }

- else

- {

- tidy_warnings();

- }

-

- break;

-

- case 'tidy_database':

-

- if (time() - $config['database_gc'] <= $config['database_last_gc'])

- {

- break;

- }

-

- include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);

-

- if ($use_shutdown_function)

- {

- register_shutdown_function('tidy_database');

- }

- else

- {

- tidy_database();

- }

-

- break;

-

- case 'tidy_sessions':

-

- if (time() - $config['session_gc'] <= $config['session_last_gc'])

- {

- break;

- }

-

- if ($use_shutdown_function)

- {

- register_shutdown_function(array(&$user, 'session_gc'));

- }

- else

- {

- $user->session_gc();

- }

-

- break;

-

- case 'prune_forum':

-

- $forum_id = request_var('f', 0);

-

- $sql = 'SELECT forum_id, prune_next, enable_prune, prune_days, prune_viewed, forum_flags, prune_freq

- FROM ' . FORUMS_TABLE . "

- WHERE forum_id = $forum_id";

- $result = $db->sql_query($sql);

- $row = $db->sql_fetchrow($result);

- $db->sql_freeresult($result);

-

- if (!$row)

- {

- break;

- }

- // Do the forum Prune thang

- if ($row['prune_next'] < time() && $row['enable_prune'])

- include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);

-

- if ($row['prune_days'])

- {

- if ($use_shutdown_function)

- {

- register_shutdown_function('auto_prune', $row['forum_id'], 'posted', $row['forum_flags'], $row['prune_days'], $row['prune_freq']);

- }

- else

- {

- auto_prune($row['forum_id'], 'posted', $row['forum_flags'], $row['prune_days'], $row['prune_freq']);

- }

- }

-

- if ($row['prune_viewed'])

- {

- if ($use_shutdown_function)

- {

- register_shutdown_function('auto_prune', $row['forum_id'], 'viewed', $row['forum_flags'], $row['prune_viewed'], $row['prune_freq']);

- }

- else

- {

- auto_prune($row['forum_id'], 'viewed', $row['forum_flags'], $row['prune_viewed'], $row['prune_freq']);

- }

-

- break;

-}

-

-// Unloading cache and closing db after having done the dirty work.

-if ($use_shutdown_function)

-{

- register_shutdown_function('unlock_cron');

- register_shutdown_function('garbage_collection');

-}

-else

-{

- unlock_cron();

- garbage_collection();

-}

-

-exit;

-

-

-/**

-* Unlock cron script

-*/

-function unlock_cron()

-{

- global $db;

-

- $sql = 'UPDATE ' . CONFIG_TABLE . "

- SET config_value = '0'

- WHERE config_name = 'cron_lock' AND config_value = '" . $db->sql_escape(CRON_ID) . "'";

- $db->sql_query($sql);