1 files changed, 135 insertions, 0 deletions
diff --git a/phpBB/includes/cron.php b/phpBB/includes/cron.php
new file mode 100644
index 0000000000..2aa22858b7
--- /dev/null
+++ b/phpBB/includes/cron.php
@@ -0,0 +1,135 @@
+<?php
+/**
+*
+* @package phpBB3
+* @version $Id$
+* @copyright (c) 2010 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* Cron class
+* @package phpBB3
+*/
+class cron
+{
+	var $tasks = array();
+	
+	function cron() {
+		global $config, $phpbb_root_path, $phpEx;
+		$modules = $config['cron_modules'];
+		$modules = explode(',', $modules);
+		foreach ($modules as $module) {
+			// explode will return array("") when exploding an empty string;
+			// users may also specify something like foo,,bar.
+			// Account for module being possibly empty
+			if (!empty($module)) {
+				// Misspelling or specifying nonexistent modules here may make the board
+				// unusable due to error messages screwing up header output
+				include_once($phpbb_root_path . "includes/cron/$module.$phpEx");
+				$cron_class = "cron_tasks_$module";
+				$object = new $cron_class;
+				foreach ($object->tasks as $cron_type => $params) {
+					$params['object'] = $object;
+					$this->tasks[$cron_type] = $params;
+				}
+			}
+		}
+	}
+	
+	function is_valid_task($cron_type) {
+		return isset($this->tasks[$cron_type]);
+	}
+	
+	function is_task_runnable($cron_type, $args=null) {
+		global $config;
+		$time_now = time();
+		$cron_params = $this->tasks[$cron_type];
+		if ($cron_params['enable_config'] && !$config[$cron_params['enable_config']]) {
+			return false;
+		}
+		if ($cron_param['custom_condition']) {
+			$callable = array($cron_params['object'], $cron_type . '_condition');
+			if ($args) {
+				$answer = call_user_func_array($callable, $args);
+			} else {
+				$answer = call_user_func($callable);
+			}
+			if (!$answer) {
+				return false;
+			}
+		}
+		if ($time_now - $config[$cron_params['interval_config']] > $config[$cron_params['last_run_config']]) {
+			return true;
+		}
+		return false;
+	}
+	
+	function is_task_shutdown_function_compatible($cron_type) {
+		$cron_params = $this->tasks[$cron_type];
+		if (isset($cron_params['shutdown_function_condition'])) {
+			return call_user_func(array($cron_params->object, $cron_type . '_shutdown_function_condition'));
+		} else {
+			return true;
+		}
+	}
+	
+	function determine_cron_mode_param() {
+		global $config;
+		if ($config['use_system_cron']) {
+			$mode = 'run_from_system';
+		} else {
+			$mode_param = 'run_from_phpbb';
+		}
+		return $mode_param;
+	}
+	
+	function find_one_runnable_task() {
+		$mode_param = $this->determine_cron_mode_param();
+		foreach ($this->tasks as $cron_type => $cron_params) {
+			if ($cron_params[$mode_param] && $this->is_task_runnable($cron_type)) {
+				return $cron_type;
+			}
+		}
+		return null;
+	}
+	
+	function find_all_runnable_tasks() {
+		$mode_param = $this->determine_cron_mode_param();
+		$tasks = array();
+		foreach ($this->tasks as $cron_type => $cron_params) {
+			if ($cron_params[$mode_param] && $this->is_task_runnable($cron_type)) {
+				$tasks[] = $cron_type;
+			}
+		}
+		return $tasks;
+	}
+	
+	function generate_task_code($cron_type, $args=array()) {
+		$cron_params = $this->tasks[$cron_type];
+		if ($cron_params['custom_code']) {
+			$code = call_user_func_array(array($cron_params['object'], $cron_type . '_code'), $args);
+		} else {
+			$code = $this->generate_generic_task_code($cron_type);
+		}
+		return $code;
+	}
+	
+	function generate_generic_task_code($cron_type) {
+		global $phpbb_root_path, $phpEx;
+		return '<img src="' . append_sid($phpbb_root_path . 'cron.' . $phpEx, 'cron_type=' . $cron_type) . '" width="1" height="1" alt="cron" />';
+	}
+	
+	function run_task($cron_type) {
+		call_user_func(array($this->tasks[$cron_type]['object'], 'run_' . $cron_type));
+	}
+}