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   1  <?php
   2  /*

   3   * Nucleus: PHP/MySQL Weblog CMS (http://nucleuscms.org/)

   4   * Copyright (C) 2002-2009 The Nucleus Group

   5   *

   6   * This program is free software; you can redistribute it and/or

   7   * modify it under the terms of the GNU General Public License

   8   * as published by the Free Software Foundation; either version 2

   9   * of the License, or (at your option) any later version.

  10   * (see nucleus/documentation/index.html#license for more info)

  11   */
  12  
  13  /**

  14   * Nucleus Atom Syndication

  15   * @license http://nucleuscms.org/license.txt GNU General Public License

  16   * @copyright Copyright (C) 2002-2009 The Nucleus Group

  17   * @version $Id: atom.php 1388 2009-07-18 06:31:28Z shizuki $

  18   */
  19  
  20  header('Pragma: no-cache');
  21  
  22  $CONF = array();
  23  $CONF['Self'] = 'atom.php';
  24  
  25  include ('./config.php');
  26  
  27  if (!$CONF['DisableSite']) {
  28      // get feed into $feed

  29      ob_start();
  30          selectSkin('feeds/atom');
  31          selector();
  32          $feed = ob_get_contents();
  33      ob_end_clean();
  34  
  35      // create ETAG (hash of feed)

  36      // (HTTP_IF_NONE_MATCH has quotes around it)

  37      $eTag = '"' . md5($feed) . '"';
  38      header('Etag: ' . $eTag);
  39  
  40      // compare Etag to what we got

  41      if ($eTag == serverVar('HTTP_IF_NONE_MATCH') ) {
  42          header('HTTP/1.0 304 Not Modified');
  43          header('Content-Length: 0');
  44      } else {
  45          // dump feed

  46          echo $feed;
  47      }
  48  
  49  }
  50  
  51  ?>