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<?php
/**
*
* @package phpBB3
* @version $Id$
* @copyright (c) 2010 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* Cron class
* @package phpBB3
*/
class cron
{
var $tasks = array();
function cron()
{
global $config, $phpbb_root_path, $phpEx;
$modules = $config['cron_modules'];
$modules = explode(',', $modules);
foreach ($modules as $module)
{
// explode will return array("") when exploding an empty string;
// users may also specify something like foo,,bar.
// Account for module being possibly empty
if (!empty($module))
{
// Misspelling or specifying nonexistent modules here may make the board
// unusable due to error messages screwing up header output
include_once($phpbb_root_path . "includes/cron/$module.$phpEx");
$cron_class = "cron_tasks_$module";
$object = new $cron_class;
foreach ($object->tasks as $cron_type => $params)
{
$params['object'] = $object;
$this->tasks[$cron_type] = $params;
}
}
}
}
function is_valid_task($cron_type)
{
return isset($this->tasks[$cron_type]);
}
function is_task_runnable($cron_type, $args=null)
{
global $config;
$time_now = time();
$cron_params = $this->tasks[$cron_type];
if ($cron_params['enable_config'] && !$config[$cron_params['enable_config']])
{
return false;
}
if ($cron_param['custom_condition'])
{
$callable = array($cron_params['object'], $cron_type . '_condition');
if ($args)
{
$answer = call_user_func_array($callable, $args);
} else
{
$answer = call_user_func($callable);
}
if (!$answer)
{
return false;
}
}
if ($time_now - $config[$cron_params['interval_config']] > $config[$cron_params['last_run_config']])
{
return true;
}
return false;
}
function is_task_shutdown_function_compatible($cron_type)
{
$cron_params = $this->tasks[$cron_type];
if (isset($cron_params['shutdown_function_condition']))
{
return call_user_func(array($cron_params->object, $cron_type . '_shutdown_function_condition'));
} else
{
return true;
}
}
function determine_cron_mode_param()
{
global $config;
if ($config['use_system_cron'])
{
$mode = 'run_from_system';
} else
{
$mode_param = 'run_from_phpbb';
}
return $mode_param;
}
function find_one_runnable_task()
{
$mode_param = $this->determine_cron_mode_param();
foreach ($this->tasks as $cron_type => $cron_params)
{
if ($cron_params[$mode_param] && $this->is_task_runnable($cron_type))
{
return $cron_type;
}
}
return null;
}
function find_all_runnable_tasks()
{
$mode_param = $this->determine_cron_mode_param();
$tasks = array();
foreach ($this->tasks as $cron_type => $cron_params)
{
if ($cron_params[$mode_param] && $this->is_task_runnable($cron_type))
{
$tasks[] = $cron_type;
}
}
return $tasks;
}
function generate_task_code($cron_type, $args=array())
{
$cron_params = $this->tasks[$cron_type];
if ($cron_params['custom_code'])
{
$code = call_user_func_array(array($cron_params['object'], $cron_type . '_code'), $args);
} else
{
$code = $this->generate_generic_task_code($cron_type);
}
return $code;
}
function generate_generic_task_code($cron_type)
{
global $phpbb_root_path, $phpEx;
return '<img src="' . append_sid($phpbb_root_path . 'cron.' . $phpEx, 'cron_type=' . $cron_type) . '" width="1" height="1" alt="cron" />';
}
function run_task($cron_type)
{
call_user_func(array($this->tasks[$cron_type]['object'], 'run_' . $cron_type));
}
}
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