cron.php

   1 <?php
   2
   3 // very basic cron functionality.
   4 // later this will go through /mod
   5 // and things like auth plugins
   6 // but we don't have those yet, so...
   7
   8 $starttime = microtime();
   9
  10 require_once(dirname(__FILE__)."/includes.php");
  11
  12 $timenow  = time();
  13
  14 mtrace("<pre>");
  15 mtrace("Server Time: ".date('r',$timenow)."\n\n");
  16
  17 $lastcron = $CFG->lastcron;
  18 if (empty($lastcron)) {
  19     $lastcron = 0;
  20 }
  21
  22 // we only want to do this once a day because it could take awhile...
  23 if ($timenow - (60*60*24) > $lastcron) {
  24     mtrace('Cleaning up old incoming files... ','');
  25     // clean up the lms incoming files
  26     delete_records_select('files_incoming','intentiondate < ?',array(time()-60*60*24));
  27
  28     $dirtocheck = $CFG->dataroot.'temp/lms/';
  29     $cmd = "find $dirtocheck -type d -cmin 1440 -print0 | xargs -0 -r rm -rf";
  30     exec($cmd);
  31
  32     $dirtocheck = $CFG->dataroot.'lms/incoming';
  33     // this is not going to work unless this script is running as either the owner of these files
  34     // or root.
  35     $cmd = "find $dirtocheck -type d -cmin 1440 -print0 | xargs -0 -r rm -rf";
  36     exec($cmd);
  37
  38     mtrace('done');
  39 }
  40
  41 // module cron
  42 if ($mods = get_list_of_plugins()) {
  43     foreach ($mods as $mod) {
  44         $libfile = $CFG->dirroot.'mod/'.$mod.'/lib.php';
  45         if (!file_exists($libfile)) {
  46             continue;
  47         }
  48         require_once($libfile);
  49         $cronfunction = $mod.'_cron';
  50         if (!function_exists($cronfunction)) {
  51             continue;
  52         }
  53         // each module is responsible for checking their last runtime and not running again if it's too soon.
  54         mtrace('Running cron for '.$mod.'...','');
  55         $cronfunction();
  56         mtrace('Done');
  57     }
  58 }
  59
  60
  61 if (!set_config('lastcron',$timenow)) {
  62     mtrace('Could not update last cron time to now!');
  63 }
  64
  65 mtrace("Cron script completed correctly");
  66
  67 $difftime = microtime_diff($starttime, microtime());
  68 mtrace("Execution took ".$difftime." seconds");
  69
  70 ?>