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   1  <?php
   2  /**
   3  *
   4  * @package phpBB3
   5  * @version $Id$
   6  * @copyright (c) 2005 phpBB Group
   7  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
   8  *
   9  */
  10  
  11  /**
  12  */
  13  define('IN_PHPBB', true);
  14  define('IN_CRON', true);
  15  $phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './';
  16  $phpEx = substr(strrchr(__FILE__, '.'), 1);
  17  include($phpbb_root_path . 'common.' . $phpEx);
  18  
  19  // Do not update users last page entry
  20  $user->session_begin(false);
  21  $auth->acl($user->data);
  22  
  23  $cron_type = request_var('cron_type', '');
  24  
  25  // Output transparent gif
  26  header('Cache-Control: no-cache');
  27  header('Content-type: image/gif');
  28  header('Content-length: 43');
  29  
  30  echo base64_decode('R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');
  31  
  32  // Flush here to prevent browser from showing the page as loading while running cron.
  33  flush();
  34  
  35  if (!isset($config['cron_lock']))
  36  {
  37      set_config('cron_lock', '0', true);
  38  }
  39  
  40  // make sure cron doesn't run multiple times in parallel
  41  if ($config['cron_lock'])
  42  {
  43      // if the other process is running more than an hour already we have to assume it
  44      // aborted without cleaning the lock
  45      $time = explode(' ', $config['cron_lock']);
  46      $time = $time[0];
  47  
  48      if ($time + 3600 >= time())
  49      {
  50          exit;
  51      }
  52  }
  53  
  54  define('CRON_ID', time() . ' ' . unique_id());
  55  
  56  $sql = 'UPDATE ' . CONFIG_TABLE . "
  57      SET config_value = '" . $db->sql_escape(CRON_ID) . "'
  58      WHERE config_name = 'cron_lock' AND config_value = '" . $db->sql_escape($config['cron_lock']) . "'";
  59  $db->sql_query($sql);
  60  
  61  // another cron process altered the table between script start and UPDATE query so exit
  62  if ($db->sql_affectedrows() != 1)
  63  {
  64      exit;
  65  }
  66  
  67  /**
  68  * Run cron-like action
  69  * Real cron-based layer will be introduced in 3.2
  70  */
  71  switch ($cron_type)
  72  {
  73      case 'queue':
  74  
  75          if (time() - $config['queue_interval'] <= $config['last_queue_run'] || !file_exists($phpbb_root_path . 'cache/queue.' . $phpEx))
  76          {
  77              break;
  78          }
  79  
  80          include_once($phpbb_root_path . 'includes/functions_messenger.' . $phpEx);
  81          $queue = new queue();
  82  
  83          $queue->process();
  84  
  85      break;
  86  
  87      case 'tidy_cache':
  88  
  89          if (time() - $config['cache_gc'] <= $config['cache_last_gc'] || !method_exists($cache, 'tidy'))
  90          {
  91              break;
  92          }
  93  
  94          $cache->tidy();
  95  
  96      break;
  97  
  98      case 'tidy_search':
  99          
 100          // Select the search method
 101          $search_type = basename($config['search_type']);
 102  
 103          if (time() - $config['search_gc'] <= $config['search_last_gc'] || !file_exists($phpbb_root_path . 'includes/search/' . $search_type . '.' . $phpEx))
 104          {
 105              break;
 106          }
 107  
 108          include_once("{$phpbb_root_path}includes/search/$search_type.$phpEx");
 109  
 110          // We do some additional checks in the module to ensure it can actually be utilised
 111          $error = false;
 112          $search = new $search_type($error);
 113  
 114          if ($error)
 115          {
 116              break;
 117          }
 118  
 119          $search->tidy();
 120  
 121      break;
 122  
 123      case 'tidy_warnings':
 124  
 125          if (time() - $config['warnings_gc'] <= $config['warnings_last_gc'])
 126          {
 127              break;
 128          }
 129  
 130          include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
 131  
 132          tidy_warnings();
 133  
 134      break;
 135  
 136      case 'tidy_database':
 137  
 138          if (time() - $config['database_gc'] <= $config['database_last_gc'])
 139          {
 140              break;
 141          }
 142  
 143          include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
 144  
 145          tidy_database();
 146  
 147      break;
 148  
 149      case 'tidy_sessions':
 150  
 151          if (time() - $config['session_gc'] <= $config['session_last_gc'])
 152          {
 153              break;
 154          }
 155  
 156          $user->session_gc();
 157  
 158      break;
 159  
 160      case 'prune_forum':
 161  
 162          $forum_id = request_var('f', 0);
 163  
 164          $sql = 'SELECT forum_id, prune_next, enable_prune, prune_days, prune_viewed, forum_flags, prune_freq
 165              FROM ' . FORUMS_TABLE . "
 166              WHERE forum_id = $forum_id";
 167          $result = $db->sql_query($sql);
 168          $row = $db->sql_fetchrow($result);
 169          $db->sql_freeresult($result);
 170  
 171          if (!$row)
 172          {
 173              break;
 174          }
 175  
 176          // Do the forum Prune thang
 177          if ($row['prune_next'] < time() && $row['enable_prune'])
 178          {
 179              include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
 180  
 181              if ($row['prune_days'])
 182              {
 183                  auto_prune($row['forum_id'], 'posted', $row['forum_flags'], $row['prune_days'], $row['prune_freq']);
 184              }
 185  
 186              if ($row['prune_viewed'])
 187              {
 188                  auto_prune($row['forum_id'], 'viewed', $row['forum_flags'], $row['prune_viewed'], $row['prune_freq']);
 189              }
 190          }
 191  
 192      break;
 193  }
 194  
 195  // Unloading cache and closing db after having done the dirty work.
 196  unlock_cron();
 197  garbage_collection();
 198  
 199  exit;
 200  
 201  
 202  /**
 203  * Unlock cron script
 204  */
 205  function unlock_cron()
 206  {
 207      global $db;
 208  
 209      $sql = 'UPDATE ' . CONFIG_TABLE . "
 210          SET config_value = '0'
 211          WHERE config_name = 'cron_lock' AND config_value = '" . $db->sql_escape(CRON_ID) . "'";
 212      $db->sql_query($sql);
 213  }
 214  
 215  ?>