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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This is a slightly strange file. It is not designed to ever be run directly from within SMF's  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * conventional running, but called externally to facilitate background tasks. It can be called  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * either directly or via cron, and in either case will completely ignore anything supplied  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * via command line, or $_GET, $_POST, $_COOKIE etc. because those things should never affect the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * running of this script.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Because of the way this runs, etc. we do need some of SMF but not everything to try to keep this  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * running a little bit faster.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Simple Machines Forum (SMF)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package SMF  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Simple Machines http://www.simplemachines.org  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright 2017 Simple Machines and individual contributors  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license http://www.simplemachines.org/about/smf/license.php BSD  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @version 2.1 Beta 4  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                define('SMF', 'BACKGROUND'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                define('FROM_CLI', empty($_SERVER['REQUEST_METHOD'])); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // This one setting is worth bearing in mind. If you are running this from proper cron, make sure you  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // don't run this file any more frequently than indicated here. It might turn ugly if you do.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // But on proper cron you can always increase this value provided you don't go beyond max_limit.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                define('MAX_CRON_TIME', 10); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // If a task fails for whatever reason it will still be marked as claimed. This is the threshold  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // by which if a task has not completed in this time, the task should become available again.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                define('MAX_CLAIM_THRESHOLD', 300); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // We're going to want a few globals... these are all set later.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                global $time_start, $maintenance, $msubject, $mmessage, $mbname, $language;  | 
            
                            
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                global $boardurl, $boarddir, $sourcedir, $webmaster_email;  | 
            
                            
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                global $db_server, $db_name, $db_user, $db_prefix, $db_persist, $db_error_send, $db_last_error;  | 
            
                            
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                global $db_connection, $modSettings, $context, $sc, $user_info, $txt;  | 
            
                            
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                global $smcFunc, $ssi_db_user, $scripturl, $db_passwd, $cachedir;  | 
            
                            
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                define('TIME_START', microtime(true)); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Just being safe...  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                foreach (array('db_character_set', 'cachedir') as $variable) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if (isset($GLOBALS[$variable]))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		unset($GLOBALS[$variable]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Get the forum's settings for database and file paths.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once(dirname(__FILE__) . '/Settings.php');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Make absolutely sure the cache directory is defined.  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                if ((empty($cachedir) || !file_exists($cachedir)) && file_exists($boarddir . '/cache'))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$cachedir = $boarddir . '/cache';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Don't do john didley if the forum's been shut down competely.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                if ($maintenance == 2)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	die($mmessage);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Fix for using the current directory as a path.  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                if (substr($sourcedir, 0, 1) == '.' && substr($sourcedir, 1, 1) != '.')  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$sourcedir = dirname(__FILE__) . substr($sourcedir, 1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Have we already turned this off? If so, exist gracefully.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                if (file_exists($cachedir . '/cron.lock'))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	obExit_cron();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Before we go any further, if this is not a CLI request, we need to do some checking.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                if (!FROM_CLI)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// We will clean up $_GET shortly. But we want to this ASAP.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$ts = isset($_GET['ts']) ? (int) $_GET['ts'] : 0;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if ($ts <= 0 || $ts % 15 != 0 || time() - $ts < 0 || time() - $ts > 20)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		obExit_cron();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Load the most important includes. In general, a background should be loading its own dependencies.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once($sourcedir . '/Errors.php');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once($sourcedir . '/Load.php');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once($sourcedir . '/Subs.php');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Create a variable to store some SMF specific functions in.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                $smcFunc = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // This is our general bootstrap, a la SSI.php but with a few differences.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                unset ($db_show_debug);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                loadDatabase();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                reloadSettings();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Just in case there's a problem...  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                set_error_handler('smf_error_handler_cron'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                $sc = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                $_SERVER['QUERY_STRING'] = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                $_SERVER['REQUEST_URL'] = FROM_CLI ? 'CLI cron.php' : $boardurl . '/cron.php';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Now 'clean the request' (or more accurately, ignore everything we're not going to use)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                cleanRequest_cron();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // At this point we could reseed the RNG but I don't think we need to risk it being seeded *even more*.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Meanwhile, time we got on with the real business here.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                while ($task_details = fetch_task())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$result = perform_task($task_details);  | 
            
                            
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                	if ($result)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$smcFunc['db_query']('', ' | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			DELETE FROM {db_prefix}background_tasks | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			WHERE id_task = {int:task}', | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				'task' => $task_details['id_task'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                obExit_cron();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                exit;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * The heart of this cron handler...  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @return bool|array False if there's nothing to do or an array of info about the task  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                function fetch_task()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 | 
                	global $smcFunc;  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    124
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    125
                 | 
                                    
                                                     | 
                
                 | 
                	// Check we haven't run over our time limit.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    126
                 | 
                                    
                                                     | 
                
                 | 
                	if (microtime(true) - TIME_START > MAX_CRON_TIME)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    127
                 | 
                                    
                                                     | 
                
                 | 
                		return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    128
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    129
                 | 
                                    
                                                     | 
                
                 | 
                	// Try to find a task. Specifically, try to find one that hasn't been claimed previously, or failing that,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    130
                 | 
                                    
                                                     | 
                
                 | 
                	// a task that was claimed but failed for whatever reason and failed long enough ago. We should not care  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    131
                 | 
                                    
                                                     | 
                
                 | 
                	// what task it is, merely that it is one in the queue, the order is irrelevant.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                	$request = $smcFunc['db_query']('', ' | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                		SELECT id_task, task_file, task_class, task_data, claimed_time  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                		FROM {db_prefix}background_tasks | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                		WHERE claimed_time < {int:claim_limit} | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                		LIMIT 1',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                		array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                			'claim_limit' => time() - MAX_CLAIM_THRESHOLD,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                		)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                	);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                	if ($row = $smcFunc['db_fetch_assoc']($request))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                		// We found one. Let's try and claim it immediately.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                		$smcFunc['db_free_result']($request);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                		$smcFunc['db_query']('', ' | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                			UPDATE {db_prefix}background_tasks | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                			SET claimed_time = {int:new_claimed} | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                			WHERE id_task = {int:task} | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                				AND claimed_time = {int:old_claimed}', | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                			array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                				'new_claimed' => time(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                				'task' => $row['id_task'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                				'old_claimed' => $row['claimed_time'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                			)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                		// Could we claim it? If so, return it back.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                		if ($smcFunc['db_affected_rows']() != 0)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                		{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                			// Update the time and go back.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                			$row['claimed_time'] = time();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                			return $row;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                		else  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                                                     | 
                
                 | 
                		{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    165
                 | 
                                    
                                                     | 
                
                 | 
                			// Uh oh, we just missed it. Try to claim another one, and let it fall through if there aren't any.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                			return fetch_task();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    167
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    168
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    169
                 | 
                                    
                                                     | 
                
                 | 
                	else  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    170
                 | 
                                    
                                                     | 
                
                 | 
                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    171
                 | 
                                    
                                                     | 
                
                 | 
                		// No dice. Clean up and go home.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    172
                 | 
                                    
                                                     | 
                
                 | 
                		$smcFunc['db_free_result']($request);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    173
                 | 
                                    
                                                     | 
                
                 | 
                		return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    174
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    175
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    176
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    177
                 | 
                                    
                                                     | 
                
                 | 
                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    178
                 | 
                                    
                                                     | 
                
                 | 
                 * This actually handles the task  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    179
                 | 
                                    
                                                     | 
                
                 | 
                 * @param array $task_details An array of info about the task  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    180
                 | 
                                    
                                                     | 
                
                 | 
                 * @return bool|void True if the task is invalid; otherwise calls the function to execute the task  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    181
                 | 
                                    
                                                     | 
                
                 | 
                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    182
                 | 
                                    
                                                     | 
                
                 | 
                function perform_task($task_details)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    183
                 | 
                                    
                                                     | 
                
                 | 
                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    184
                 | 
                                    
                                                     | 
                
                 | 
                	global $smcFunc, $sourcedir, $boarddir;  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    185
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    186
                 | 
                                    
                                                     | 
                
                 | 
                	// This indicates the file to load.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    187
                 | 
                                    
                                                     | 
                
                 | 
                	if (!empty($task_details['task_file']))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    188
                 | 
                                    
                                                     | 
                
                 | 
                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    189
                 | 
                                    
                                                     | 
                
                 | 
                		$include = strtr(trim($task_details['task_file']), array('$boarddir' => $boarddir, '$sourcedir' => $sourcedir)); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    190
                 | 
                                    
                                                     | 
                
                 | 
                		if (file_exists($include))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    191
                 | 
                                    
                                                     | 
                
                 | 
                			require_once($include);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    192
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    193
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    194
                 | 
                                    
                                                     | 
                
                 | 
                	if (empty($task_details['task_class']))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    195
                 | 
                                    
                                                     | 
                
                 | 
                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    196
                 | 
                                    
                                                     | 
                
                 | 
                		// This would be nice to translate but the language files aren't loaded for any specific language.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    197
                 | 
                                    
                                                     | 
                
                 | 
                		log_error('Invalid background task specified (no class, ' . (empty($task_details['task_file']) ? ' no file' : ' to load ' . $task_details['task_file']) . ')'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    198
                 | 
                                    
                                                     | 
                
                 | 
                		return true; // So we clear it from the queue.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    199
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    200
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    201
                 | 
                                    
                                                     | 
                
                 | 
                	// All background tasks need to be classes.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    202
                 | 
                                    
                                                     | 
                
                 | 
                	elseif (class_exists($task_details['task_class']) && is_subclass_of($task_details['task_class'], 'SMF_BackgroundTask'))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    203
                 | 
                                    
                                                     | 
                
                 | 
                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    204
                 | 
                                    
                                                     | 
                
                 | 
                		$details = empty($task_details['task_data']) ? array() : $smcFunc['json_decode']($task_details['task_data'], true);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    205
                 | 
                                    
                                                     | 
                
                 | 
                		$bgtask = new $task_details['task_class']($details);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    206
                 | 
                                    
                                                     | 
                
                 | 
                		return $bgtask->execute();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    207
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    208
                 | 
                                    
                                                     | 
                
                 | 
                	else  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    209
                 | 
                                    
                                                     | 
                
                 | 
                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    210
                 | 
                                    
                                                     | 
                
                 | 
                		log_error('Invalid background task specified: (class: ' . $task_details['task_class'] . ', ' . (empty($task_details['task_file']) ? ' no file' : ' to load ' . $task_details['task_file']) . ')'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    211
                 | 
                                    
                                                     | 
                
                 | 
                		return true; // So we clear it from the queue.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    212
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    213
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    214
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    215
                 | 
                                    
                                                     | 
                
                 | 
                // These are all our helper functions that resemble their big brother counterparts. These are not so important.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    216
                 | 
                                    
                                                     | 
                
                 | 
                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    217
                 | 
                                    
                                                     | 
                
                 | 
                 * Cleans up the request variables  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    218
                 | 
                                    
                                                     | 
                
                 | 
                 * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    219
                 | 
                                    
                                                     | 
                
                 | 
                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    220
                 | 
                                    
                                                     | 
                
                 | 
                function cleanRequest_cron()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    221
                 | 
                                    
                                                     | 
                
                 | 
                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    222
                 | 
                                    
                                                     | 
                
                 | 
                	global $scripturl, $boardurl;  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    223
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    224
                 | 
                                    
                                                     | 
                
                 | 
                	$scripturl = $boardurl . '/index.php';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    225
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    226
                 | 
                                    
                                                     | 
                
                 | 
                	// These keys shouldn't be set...ever.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    227
                 | 
                                    
                                                     | 
                
                 | 
                	if (isset($_REQUEST['GLOBALS']) || isset($_COOKIE['GLOBALS']))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    228
                 | 
                                    
                                                     | 
                
                 | 
                		die('Invalid request variable.'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    229
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    230
                 | 
                                    
                                                     | 
                
                 | 
                	// Save some memory.. (since we don't use these anyway.)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    231
                 | 
                                    
                                                     | 
                
                 | 
                	unset($GLOBALS['HTTP_POST_VARS'], $GLOBALS['HTTP_POST_VARS']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    232
                 | 
                                    
                                                     | 
                
                 | 
                	unset($GLOBALS['HTTP_POST_FILES'], $GLOBALS['HTTP_POST_FILES']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    233
                 | 
                                    
                                                     | 
                
                 | 
                	unset($GLOBALS['_GET'], $GLOBALS['_POST'], $GLOBALS['_REQUEST'], $GLOBALS['_COOKIE'], $GLOBALS['_FILES']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    234
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    235
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    236
                 | 
                                    
                                                     | 
                
                 | 
                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    237
                 | 
                                    
                                                     | 
                
                 | 
                 * The error handling function  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    238
                 | 
                                    
                                                     | 
                
                 | 
                 * @param int $error_level One of the PHP error level constants (see )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    239
                 | 
                                    
                                                     | 
                
                 | 
                 * @param string $error_string The error message  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    240
                 | 
                                    
                                                     | 
                
                 | 
                 * @param string $file The file where the error occurred  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    241
                 | 
                                    
                                                     | 
                
                 | 
                 * @param int $line What line of the specified file the error occurred on  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    242
                 | 
                                    
                                                     | 
                
                 | 
                 * @return void  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    243
                 | 
                                    
                                                     | 
                
                 | 
                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    244
                 | 
                                    
                                                     | 
                
                 | 
                function smf_error_handler_cron($error_level, $error_string, $file, $line)  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    245
                 | 
                                    
                                                     | 
                
                 | 
                { | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    246
                 | 
                                    
                                                     | 
                
                 | 
                	global $modSettings;  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                        
                            
            
                                    
            
            
                | 
                    247
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    248
                 | 
                                    
                                                     | 
                
                 | 
                	// Ignore errors if we're ignoring them or they are strict notices from PHP 5  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    249
                 | 
                                    
                                                     | 
                
                 | 
                	if (error_reporting() == 0)  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    250
                 | 
                                    
                                                     | 
                
                 | 
                		return;  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    251
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    252
                 | 
                                    
                                                     | 
                
                 | 
                	$error_type = 'cron';  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    253
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    254
                 | 
                                    
                                                     | 
                
                 | 
                	log_error($error_level . ': ' . $error_string, $error_type, $file, $line);  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    255
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    256
                 | 
                                    
                                                     | 
                
                 | 
                	// If this is an E_ERROR or E_USER_ERROR.... die.  Violently so.  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    257
                 | 
                                    
                                                     | 
                
                 | 
                	if ($error_level % 255 == E_ERROR)  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    258
                 | 
                                    
                                                     | 
                
                 | 
                		die('No direct access...'); | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    259
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    260
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    261
                 | 
                                    
                                                     | 
                
                 | 
                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    262
                 | 
                                    
                                                     | 
                
                 | 
                 * The exit function  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    263
                 | 
                                    
                                                     | 
                
                 | 
                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    264
                 | 
                                    
                                                     | 
                
                 | 
                function obExit_cron()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    265
                 | 
                                    
                                                     | 
                
                 | 
                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    266
                 | 
                                    
                                                     | 
                
                 | 
                	if (FROM_CLI)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    267
                 | 
                                    
                                                     | 
                
                 | 
                		die(0);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    268
                 | 
                                    
                                                     | 
                
                 | 
                	else  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    269
                 | 
                                    
                                                     | 
                
                 | 
                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    270
                 | 
                                    
                                                     | 
                
                 | 
                		header('Content-Type: image/gif'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    271
                 | 
                                    
                                                     | 
                
                 | 
                		die("\x47\x49\x46\x38\x39\x61\x01\x00\x01\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x21\xF9\x04\x01\x00\x00\x00\x00\x2C\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02\x44\x01\x00\x3B"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    272
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    273
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    274
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    275
                 | 
                                    
                                                     | 
                
                 | 
                // We would like this to be defined, but we don't want to have to load more stuff than necessary.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    276
                 | 
                                    
                                                     | 
                
                 | 
                // Thus we declare it here, and any legitimate background task must implement this.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    277
                 | 
                                    
                                                     | 
                
                 | 
                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    278
                 | 
                                    
                                                     | 
                
                 | 
                 * Class SMF_BackgroundTask  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    279
                 | 
                                    
                                                     | 
                
                 | 
                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    280
                 | 
                                    
                                                     | 
                
                 | 
                abstract class SMF_BackgroundTask  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    281
                 | 
                                    
                                                     | 
                
                 | 
                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    282
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    283
                 | 
                                    
                                                     | 
                
                 | 
                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    284
                 | 
                                    
                                                     | 
                
                 | 
                	 * @var array Holds the details for the task  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    285
                 | 
                                    
                                                     | 
                
                 | 
                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    286
                 | 
                                    
                                                     | 
                
                 | 
                	protected $_details;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    287
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    288
                 | 
                                    
                                                     | 
                
                 | 
                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    289
                 | 
                                    
                                                     | 
                
                 | 
                	 * The constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    290
                 | 
                                    
                                                     | 
                
                 | 
                	 * @param array $details The details for the task  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    291
                 | 
                                    
                                                     | 
                
                 | 
                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    292
                 | 
                                    
                                                     | 
                
                 | 
                	public function __construct($details)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    293
                 | 
                                    
                                                     | 
                
                 | 
                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    294
                 | 
                                    
                                                     | 
                
                 | 
                		$this->_details = $details;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    295
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    296
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    297
                 | 
                                    
                                                     | 
                
                 | 
                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    298
                 | 
                                    
                                                     | 
                
                 | 
                	 * The function to actually execute a task  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    299
                 | 
                                    
                                                     | 
                
                 | 
                	 * @return mixed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    300
                 | 
                                    
                                                     | 
                
                 | 
                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    301
                 | 
                                    
                                                     | 
                
                 | 
                	abstract public function execute();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    302
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    303
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                        
            
                                    
            
            
                | 
                    304
                 | 
                                    
                                                     | 
                
                 | 
                ?>  | 
            
            
                        
Instead of relying on
globalstate, we recommend one of these alternatives:1. Pass all data via parameters
2. Create a class that maintains your state