[ Index ]

PHP Cross Reference of DokuWiki

title

Body

[close]

/ -> feed.php (source)

   1  <?php
   2  
   3  /**
   4   * XML feed export
   5   *
   6   * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
   7   * @author     Andreas Gohr <andi@splitbrain.org>
   8   *
   9   * @global array $conf
  10   * @global Input $INPUT
  11   */
  12  
  13  use dokuwiki\Feed\FeedCreator;
  14  use dokuwiki\Feed\FeedCreatorOptions;
  15  use dokuwiki\Cache\Cache;
  16  use dokuwiki\ChangeLog\MediaChangeLog;
  17  use dokuwiki\ChangeLog\PageChangeLog;
  18  use dokuwiki\Extension\AuthPlugin;
  19  use dokuwiki\Extension\Event;
  20  
  21  if (!defined('DOKU_INC')) define('DOKU_INC', __DIR__ . '/');
  22  require_once (DOKU_INC . 'inc/init.php');
  23  
  24  //close session
  25  session_write_close();
  26  
  27  //feed disabled?
  28  if (!actionOK('rss')) {
  29      http_status(404);
  30      echo '<error>RSS feed is disabled.</error>';
  31      exit;
  32  }
  33  
  34  $options = new FeedCreatorOptions();
  35  
  36  // the feed is dynamic - we need a cache for each combo
  37  // (but most people just use the default feed so it's still effective)
  38  $key = implode('$', [
  39      $options->getCacheKey(),
  40      $INPUT->server->str('REMOTE_USER'),
  41      $INPUT->server->str('HTTP_HOST'),
  42      $INPUT->server->str('SERVER_PORT')
  43  ]);
  44  $cache = new Cache($key, '.feed');
  45  
  46  // prepare cache depends
  47  $depends['files'] = getConfigFiles('main');
  48  $depends['age'] = $conf['rss_update'];
  49  $depends['purge'] = $INPUT->bool('purge');
  50  
  51  // check cacheage and deliver if nothing has changed since last
  52  // time or the update interval has not passed, also handles conditional requests
  53  header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
  54  header('Pragma: public');
  55  header('Content-Type: ' . $options->getMimeType());
  56  header('X-Robots-Tag: noindex');
  57  if ($cache->useCache($depends)) {
  58      http_conditionalRequest($cache->getTime());
  59      if ($conf['allowdebug']) header("X-CacheUsed: $cache->cache");
  60      echo $cache->retrieveCache();
  61      exit;
  62  } else {
  63      http_conditionalRequest(time());
  64  }
  65  
  66  // create new feed
  67  try {
  68      $feed = (new FeedCreator($options))->build();
  69      $cache->storeCache($feed);
  70      echo $feed;
  71  } catch (Exception $e) {
  72      http_status(500);
  73      echo '<error>' . hsc($e->getMessage()) . '</error>';
  74      exit;
  75  }