Blame Extras/phpBB/3.0.4/cron.php

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/**
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*
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* @package phpBB3
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* @version $Id: cron.php 8479 2008-03-29 00:22:48Z naderman $
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* @copyright (c) 2005 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*
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*/
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/**
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*/
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define('IN_PHPBB', true);
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define('IN_CRON', true);
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$phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './';
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$phpEx = substr(strrchr(__FILE__, '.'), 1);
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include($phpbb_root_path . 'common.' . $phpEx);
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// Do not update users last page entry
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$user->session_begin(false);
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$auth->acl($user->data);
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$cron_type = request_var('cron_type', '');
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$use_shutdown_function = (@function_exists('register_shutdown_function')) ? true : false;
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// Output transparent gif
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header('Cache-Control: no-cache');
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header('Content-type: image/gif');
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header('Content-length: 43');
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echo base64_decode('R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');
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// test without flush ;)
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// flush();
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//
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if (!isset($config['cron_lock']))
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{
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	set_config('cron_lock', '0', true);
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}
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// make sure cron doesn't run multiple times in parallel
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if ($config['cron_lock'])
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{
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	// if the other process is running more than an hour already we have to assume it
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	// aborted without cleaning the lock
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	$time = explode(' ', $config['cron_lock']);
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	$time = $time[0];
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	if ($time + 3600 >= time())
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	{
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		exit;
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	}
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}
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define('CRON_ID', time() . ' ' . unique_id());
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$sql = 'UPDATE ' . CONFIG_TABLE . "
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	SET config_value = '" . $db->sql_escape(CRON_ID) . "'
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	WHERE config_name = 'cron_lock' AND config_value = '" . $db->sql_escape($config['cron_lock']) . "'";
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$db->sql_query($sql);
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// another cron process altered the table between script start and UPDATE query so exit
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if ($db->sql_affectedrows() != 1)
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{
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	exit;
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}
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/**
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* Run cron-like action
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* Real cron-based layer will be introduced in 3.2
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*/
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switch ($cron_type)
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{
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	case 'queue':
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		if (time() - $config['queue_interval'] <= $config['last_queue_run'] || !file_exists($phpbb_root_path . 'cache/queue.' . $phpEx))
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		{
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			break;
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		}
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		// A user reported using the mail() function while using shutdown does not work. We do not want to risk that.
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		if ($use_shutdown_function && !$config['smtp_delivery'])
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		{
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			$use_shutdown_function = false;
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		}
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		include_once($phpbb_root_path . 'includes/functions_messenger.' . $phpEx);
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		$queue = new queue();
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		if ($use_shutdown_function)
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		{
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			register_shutdown_function(array(&$queue, 'process'));
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		}
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		else
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		{
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			$queue->process();
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		}
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	break;
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	case 'tidy_cache':
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		if (time() - $config['cache_gc'] <= $config['cache_last_gc'] || !method_exists($cache, 'tidy'))
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		{
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			break;
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		}
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		if ($use_shutdown_function)
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		{
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			register_shutdown_function(array(&$cache, 'tidy'));
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		}
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		else
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		{
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			$cache->tidy();
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		}
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	break;
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	case 'tidy_search':
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		// Select the search method
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		$search_type = basename($config['search_type']);
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		if (time() - $config['search_gc'] <= $config['search_last_gc'] || !file_exists($phpbb_root_path . 'includes/search/' . $search_type . '.' . $phpEx))
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		{
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			break;
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		}
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		include_once("{$phpbb_root_path}includes/search/$search_type.$phpEx");
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		// We do some additional checks in the module to ensure it can actually be utilised
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		$error = false;
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		$search = new $search_type($error);
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		if ($error)
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		{
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			break;
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		}
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		if ($use_shutdown_function)
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		{
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			register_shutdown_function(array(&$search, 'tidy'));
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		}
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		else
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		{
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			$search->tidy();
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		}
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	break;
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	case 'tidy_warnings':
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		if (time() - $config['warnings_gc'] <= $config['warnings_last_gc'])
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		{
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			break;
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		}
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		include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
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		if ($use_shutdown_function)
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		{
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			register_shutdown_function('tidy_warnings');
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		}
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		else
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		{
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			tidy_warnings();
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		}
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	break;
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	case 'tidy_database':
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		if (time() - $config['database_gc'] <= $config['database_last_gc'])
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		{
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			break;
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		}
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		include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
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		if ($use_shutdown_function)
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		{
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			register_shutdown_function('tidy_database');
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		}
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		else
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		{
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			tidy_database();
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		}
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	break;
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	case 'tidy_sessions':
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		if (time() - $config['session_gc'] <= $config['session_last_gc'])
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		{
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			break;
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		}
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		if ($use_shutdown_function)
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		{
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			register_shutdown_function(array(&$user, 'session_gc'));
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		}
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		else
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		{
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			$user->session_gc();
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		}
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	break;
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	case 'prune_forum':
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		$forum_id = request_var('f', 0);
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		$sql = 'SELECT forum_id, prune_next, enable_prune, prune_days, prune_viewed, forum_flags, prune_freq
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			FROM ' . FORUMS_TABLE . "
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			WHERE forum_id = $forum_id";
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		$result = $db->sql_query($sql);
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		$row = $db->sql_fetchrow($result);
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		$db->sql_freeresult($result);
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		if (!$row)
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		{
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			break;
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		}
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		// Do the forum Prune thang
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		if ($row['prune_next'] < time() && $row['enable_prune'])
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		{
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			include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
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			if ($row['prune_days'])
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			{
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				if ($use_shutdown_function)
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				{
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					register_shutdown_function('auto_prune', $row['forum_id'], 'posted', $row['forum_flags'], $row['prune_days'], $row['prune_freq']);
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				}
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				else
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				{
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					auto_prune($row['forum_id'], 'posted', $row['forum_flags'], $row['prune_days'], $row['prune_freq']);
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				}
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			}
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			if ($row['prune_viewed'])
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			{
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				if ($use_shutdown_function)
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				{
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					register_shutdown_function('auto_prune', $row['forum_id'], 'viewed', $row['forum_flags'], $row['prune_viewed'], $row['prune_freq']);
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				}
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				else
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				{
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					auto_prune($row['forum_id'], 'viewed', $row['forum_flags'], $row['prune_viewed'], $row['prune_freq']);
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				}
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			}
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		}
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	break;
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}
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// Unloading cache and closing db after having done the dirty work.
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if ($use_shutdown_function)
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{
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	register_shutdown_function('unlock_cron');
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	register_shutdown_function('garbage_collection');
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}
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else
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{
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	unlock_cron();
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	garbage_collection();
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}
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exit;
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/**
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* Unlock cron script
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*/
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function unlock_cron()
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{
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	global $db;
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	$sql = 'UPDATE ' . CONFIG_TABLE . "
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		SET config_value = '0'
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		WHERE config_name = 'cron_lock' AND config_value = '" . $db->sql_escape(CRON_ID) . "'";
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	$db->sql_query($sql);
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}
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?>