mirror of
https://github.com/moodle/moodle.git
synced 2025-01-19 06:18:28 +01:00
384 lines
15 KiB
PHP
384 lines
15 KiB
PHP
<?PHP // $Id$
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/// This script looks through all the module directories for cron.php files
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/// and runs them. These files can contain cleanup functions, email functions
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/// or anything that needs to be run on a regular basis.
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///
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/// This file is best run from cron on the host system (ie outside PHP).
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/// The script can either be invoked via the web server or via a standalone
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/// version of PHP compiled for CGI.
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///
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/// eg wget -q -O /dev/null 'http://moodle.somewhere.edu/admin/cron.php'
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/// or php /web/moodle/admin/cron.php
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$starttime = microtime();
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/// The following is a hack necessary to allow this script to work well
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/// from the command line.
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define('FULLME', 'cron');
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/// The current directory in PHP version 4.3.0 and above isn't necessarily the
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/// directory of the script when run from the command line. The require_once()
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/// would fail, so we'll have to chdir()
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if (!isset($_SERVER['REMOTE_ADDR']) && isset($_SERVER['argv'][0])) {
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chdir(dirname($_SERVER['argv'][0]));
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}
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require_once(dirname(__FILE__) . '/../config.php');
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require_once($CFG->libdir.'/adminlib.php');
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if (isset($_SERVER['REMOTE_ADDR'])) { // if the script is accessed via the web.
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if (!empty($CFG->cronclionly)) {
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// This script can only be run via the cli.
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print_error('cronerrorclionly', 'admin');
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exit;
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}
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// This script is being called via the web, so check the password if there is one.
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if (!empty($CFG->cronremotepassword)) {
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$pass = optional_param('password', '', PARAM_RAW);
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if($pass != $CFG->cronremotepassword) {
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// wrong password.
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print_error('cronerrorpassword', 'admin');
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exit;
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}
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}
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}
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if (!$alreadyadmin = has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM, SITEID))) {
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unset($_SESSION['USER']);
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unset($USER);
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unset($_SESSION['SESSION']);
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unset($SESSION);
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$USER = get_admin(); /// Temporarily, to provide environment for this script
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// we need to override the admin timezone to the moodle timezone!
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$USER->timezone = $CFG->timezone;
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}
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//unset test cookie, user must login again anyway
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setcookie('MoodleSessionTest'.$CFG->sessioncookie, '', time() - 3600, '/');
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/// switch to site language and locale
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if (!empty($CFG->courselang)) {
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unset ($CFG->courselang);
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}
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if (!empty($SESSION->lang)) {
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unset ($SESSION->lang);
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}
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$USER->lang = '';
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moodle_setlocale();
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/// send mime type and encoding
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if (check_browser_version('MSIE')) {
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//ugly IE hack to work around downloading instead of viewing
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@header('Content-Type: text/html; charset=utf-8');
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echo "<xmp>"; //<pre> is not good enough for us here
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} else {
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//send proper plaintext header
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@header('Content-Type: text/plain; charset=utf-8');
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}
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/// Start output log
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$timenow = time();
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mtrace("Server Time: ".date('r',$timenow)."\n\n");
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/// Run all cron jobs for each module
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mtrace("Starting activity modules");
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if ($mods = get_records_select("modules", "cron > 0 AND (($timenow - lastcron) > cron)")) {
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foreach ($mods as $mod) {
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$libfile = "$CFG->dirroot/mod/$mod->name/lib.php";
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if (file_exists($libfile)) {
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include_once($libfile);
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$cron_function = $mod->name."_cron";
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if (function_exists($cron_function)) {
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mtrace("Processing module function $cron_function ...", '');
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if ($cron_function()) {
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if (! set_field("modules", "lastcron", $timenow, "id", $mod->id)) {
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mtrace("Error: could not update timestamp for $mod->fullname");
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}
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}
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mtrace("done.");
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}
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}
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}
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}
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mtrace("Finished activity modules");
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mtrace("Starting blocks");
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if ($blocks = get_records_select("block", "cron > 0 AND (($timenow - lastcron) > cron)")) {
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// we will need the base class.
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require_once($CFG->dirroot.'/blocks/moodleblock.class.php');
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foreach ($blocks as $block) {
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$blockfile = $CFG->dirroot.'/blocks/'.$block->name.'/block_'.$block->name.'.php';
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if (file_exists($blockfile)) {
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require_once($blockfile);
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$classname = 'block_'.$block->name;
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$blockobj = new $classname;
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if (method_exists($blockobj,'cron')) {
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mtrace("Processing cron function for ".$block->name.'....','');
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if ($blockobj->cron()) {
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if (!set_field('block','lastcron',$timenow,'id',$block->id)) {
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mtrace('Error: could not update timestamp for '.$block->name);
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}
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}
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mtrace('done.');
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}
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}
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}
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}
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mtrace("Finished blocks");
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if (!empty($CFG->langcache)) {
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mtrace('Updating languages cache');
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get_list_of_languages();
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}
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/// Run all core cron jobs, but not every time since they aren't too important.
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/// These don't have a timer to reduce load, so we'll use a random number
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/// to randomly choose the percentage of times we should run these jobs.
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srand ((double) microtime() * 10000000);
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$random100 = rand(0,100);
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if ($random100 < 20) { // Approximately 20% of the time.
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mtrace("Running clean-up tasks...");
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/// Unenrol users who haven't logged in for $CFG->longtimenosee
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if ($CFG->longtimenosee) { // value in days
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$longtime = $timenow - ($CFG->longtimenosee * 3600 * 24);
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if ($assigns = get_users_longtimenosee($longtime)) {
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foreach ($assigns as $assign) {
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if ($context = get_context_instance(CONTEXT_COURSE, $assign->courseid)) {
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if (role_unassign(0, $assign->id, 0, $context->id)) {
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mtrace("Deleted student enrolment for user $assign->id from course $assign->courseid");
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}
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}
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}
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}
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}
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/// Delete users who haven't confirmed within required period
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if (!empty($CFG->deleteunconfirmed)) {
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$oneweek = $timenow - ($CFG->deleteunconfirmed * 3600);
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if ($users = get_users_unconfirmed($oneweek)) {
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foreach ($users as $user) {
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if (delete_records('user', 'id', $user->id)) {
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mtrace("Deleted unconfirmed user for ".fullname($user, true)." ($user->id)");
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}
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}
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}
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}
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flush();
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/// Delete users who haven't completed profile within required period
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if (!empty($CFG->deleteunconfirmed)) {
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$oneweek = $timenow - ($CFG->deleteunconfirmed * 3600);
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if ($users = get_users_not_fully_set_up($oneweek)) {
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foreach ($users as $user) {
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if (delete_records('user', 'id', $user->id)) {
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mtrace("Deleted not fully setup user $user->username ($user->id)");
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}
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}
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}
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}
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flush();
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/// Delete old logs to save space (this might need a timer to slow it down...)
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if (!empty($CFG->loglifetime)) { // value in days
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$loglifetime = $timenow - ($CFG->loglifetime * 3600 * 24);
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delete_records_select("log", "time < '$loglifetime'");
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}
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flush();
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/// Delete old cached texts
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if (!empty($CFG->cachetext)) { // Defined in config.php
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$cachelifetime = time() - $CFG->cachetext - 60; // Add an extra minute to allow for really heavy sites
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delete_records_select('cache_text', "timemodified < '$cachelifetime'");
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}
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flush();
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if (!empty($CFG->notifyloginfailures)) {
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notify_login_failures();
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}
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flush();
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sync_metacourses();
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//
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// generate new password emails for users
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//
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mtrace('checking for create_password');
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if (count_records('user_preferences', 'name', 'create_password', 'value', '1')) {
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mtrace('creating passwords for new users');
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$newusers = get_records_sql("SELECT u.id as id, u.email, u.firstname,
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u.lastname, u.username,
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p.id as prefid
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FROM {$CFG->prefix}user u
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JOIN {$CFG->prefix}user_preferences p ON u.id=p.userid
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WHERE p.name='create_password' AND p.value=1 AND u.email !='' ");
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foreach ($newusers as $newuserid => $newuser) {
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$newuser->emailstop = 0; // send email regardless
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// email user
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if (setnew_password_and_mail($newuser)) {
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// remove user pref
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delete_records('user_preferences', 'id', $newuser->prefid);
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} else {
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trigger_error("Could not create and mail new user password!");
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}
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}
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}
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} // End of occasional clean-up tasks
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if (empty($CFG->disablescheduledbackups)) { // Defined in config.php
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//Execute backup's cron
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//Perhaps a long time and memory could help in large sites
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@set_time_limit(0);
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@raise_memory_limit("128M");
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if (function_exists('apache_child_terminate')) {
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// if we are running from Apache, give httpd a hint that
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// it can recycle the process after it's done. Apache's
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// memory management is truly awful but we can help it.
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@apache_child_terminate();
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}
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if (file_exists("$CFG->dirroot/backup/backup_scheduled.php") and
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file_exists("$CFG->dirroot/backup/backuplib.php") and
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file_exists("$CFG->dirroot/backup/lib.php") and
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file_exists("$CFG->libdir/blocklib.php")) {
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include_once("$CFG->dirroot/backup/backup_scheduled.php");
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include_once("$CFG->dirroot/backup/backuplib.php");
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include_once("$CFG->dirroot/backup/lib.php");
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require_once ("$CFG->libdir/blocklib.php");
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mtrace("Running backups if required...");
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if (! schedule_backup_cron()) {
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mtrace("ERROR: Something went wrong while performing backup tasks!!!");
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} else {
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mtrace("Backup tasks finished.");
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}
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}
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}
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if (!empty($CFG->enablerssfeeds)) { //Defined in admin/variables page
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include_once("$CFG->libdir/rsslib.php");
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mtrace("Running rssfeeds if required...");
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if ( ! cron_rss_feeds()) {
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mtrace("Something went wrong while generating rssfeeds!!!");
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} else {
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mtrace("Rssfeeds finished");
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}
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}
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/// Run the enrolment cron, if any
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if (!($plugins = explode(',', $CFG->enrol_plugins_enabled))) {
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$plugins = array($CFG->enrol);
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}
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require_once($CFG->dirroot .'/enrol/enrol.class.php');
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foreach ($plugins as $p) {
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$enrol = enrolment_factory::factory($p);
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if (method_exists($enrol, 'cron')) {
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$enrol->cron();
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}
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if (!empty($enrol->log)) {
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mtrace($enrol->log);
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}
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unset($enrol);
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}
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/// Run the auth cron, if any
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if (!($auths = explode(',', $CFG->auth_plugins_enabled))) {
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$auths = array($user->auth);
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}
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mtrace("Running auth crons if required...");
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foreach ($auths as $auth) {
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$authplugin = get_auth_plugin($auth);
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if (method_exists($authplugin, 'cron')) {
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mtrace("Running cron for auth/$auth...");
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$authplugin->cron();
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if (!empty($authplugin->log)) {
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mtrace($authplugin->log);
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}
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}
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unset($authplugin);
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}
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if (!empty($CFG->enablestats) and empty($CFG->disablestatsprocessing)) {
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// check we're not before our runtime
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$timetocheck = strtotime("$CFG->statsruntimestarthour:$CFG->statsruntimestartminute today");
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if (time() > $timetocheck) {
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$time = 60*60*20; // set it to 20 here for first run... (overridden by $CFG)
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$clobber = true;
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if (!empty($CFG->statsmaxruntime)) {
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$time = $CFG->statsmaxruntime+(60*30); // add on half an hour just to make sure (it could take that long to break out of the loop)
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}
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if (!get_field_sql('SELECT id FROM '.$CFG->prefix.'stats_daily')) {
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// first run, set another lock. we'll check for this in subsequent runs to set the timeout to later for the normal lock.
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set_cron_lock('statsfirstrunlock',true,$time,true);
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$firsttime = true;
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}
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$time = 60*60*2; // this time set to 2.. (overridden by $CFG)
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if (!empty($CFG->statsmaxruntime)) {
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$time = $CFG->statsmaxruntime+(60*30); // add on half an hour to make sure (it could take that long to break out of the loop)
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}
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if ($config = get_record('config','name','statsfirstrunlock')) {
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if (!empty($config->value)) {
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$clobber = false; // if we're on the first run, just don't clobber it.
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}
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}
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if (set_cron_lock('statsrunning',true,$time, $clobber)) {
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require_once($CFG->dirroot.'/lib/statslib.php');
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$return = stats_cron_daily();
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if (stats_check_runtime() && $return == STATS_RUN_COMPLETE) {
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stats_cron_weekly();
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}
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if (stats_check_runtime() && $return == STATS_RUN_COMPLETE) {
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$return = $return && stats_cron_monthly();
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}
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if (stats_check_runtime() && $return == STATS_RUN_COMPLETE) {
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stats_clean_old();
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}
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set_cron_lock('statsrunning',false);
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if (!empty($firsttime)) {
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set_cron_lock('statsfirstrunlock',false);
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}
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}
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}
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}
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//Unset session variables and destroy it
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@session_unset();
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@session_destroy();
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mtrace("Cron script completed correctly");
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$difftime = microtime_diff($starttime, microtime());
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mtrace("Execution took ".$difftime." seconds");
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/// finishe the IE hack
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if (check_browser_version('MSIE')) {
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echo "</xmp>";
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}
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?>
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