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   1  <?php
   2  /**
   3   * XML feed export
   4   *
   5   * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
   6   * @author     Andreas Gohr <andi@splitbrain.org>
   7   */
   8  
   9    if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__)).'/');
  10    require_once (DOKU_INC.'inc/init.php');
  11    require_once (DOKU_INC.'inc/common.php');
  12    require_once (DOKU_INC.'inc/events.php');
  13    require_once (DOKU_INC.'inc/parserutils.php');
  14    require_once (DOKU_INC.'inc/feedcreator.class.php');
  15    require_once (DOKU_INC.'inc/auth.php');
  16    require_once (DOKU_INC.'inc/pageutils.php');
  17  
  18    //close session
  19    session_write_close();
  20  
  21  
  22    $num   = $_REQUEST['num'];
  23    $type  = $_REQUEST['type'];
  24    $mode  = $_REQUEST['mode'];
  25    $minor = $_REQUEST['minor'];
  26    $ns    = $_REQUEST['ns'];
  27    $ltype = $_REQUEST['linkto'];
  28  
  29    if($type == '')
  30      $type = $conf['rss_type'];
  31  
  32    switch ($type){
  33      case 'rss':
  34         $type = 'RSS0.91';
  35         $mime = 'text/xml';
  36         break;
  37      case 'rss2':
  38         $type = 'RSS2.0';
  39         $mime = 'text/xml';
  40         break;
  41      case 'atom':
  42         $type = 'ATOM0.3';
  43         $mime = 'application/xml';
  44         break;
  45      case 'atom1':
  46         $type = 'ATOM1.0';
  47         $mime = 'application/atom+xml';
  48         break;
  49      default:
  50         $type = 'RSS1.0';
  51         $mime = 'application/xml';
  52    }
  53  
  54    // the feed is dynamic - we need a cache for each combo
  55    // (but most people just use the default feed so it's still effective)
  56    $cache = getCacheName($num.$type.$mode.$ns.$ltype.$_SERVER['REMOTE_USER'],'.feed');
  57    $cmod = @filemtime($cache); // 0 if not exists
  58    if ($cmod && (@filemtime(DOKU_CONF.'local.php')>$cmod || @filemtime(DOKU_CONF.'dokuwiki.php')>$cmod)) {
  59      // ignore cache if feed prefs may have changed
  60      $cmod = 0;
  61    }
  62  
  63    // check cacheage and deliver if nothing has changed since last
  64    // time or the update interval has not passed, also handles conditional requests
  65    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
  66    header('Pragma: public');
  67    header('Content-Type: application/xml; charset=utf-8');
  68    if($cmod && (($cmod+$conf['rss_update']>time()) || ($cmod>@filemtime($conf['changelog'])))){
  69      http_conditionalRequest($cmod);
  70      if($conf['allowdebug']) header("X-CacheUsed: $cache");
  71      print io_readFile($cache);
  72      exit;
  73    } else {
  74      http_conditionalRequest(time());
  75    }
  76  
  77    // create new feed
  78    $rss = new DokuWikiFeedCreator();
  79    $rss->title = $conf['title'].(($ns) ? ' '.$ns : '');
  80    $rss->link  = DOKU_URL;
  81    $rss->syndicationURL = DOKU_URL.'feed.php';
  82    $rss->cssStyleSheet  = DOKU_URL.'lib/exe/css.php?s=feed';
  83  
  84    $image = new FeedImage();
  85    $image->title = $conf['title'];
  86    $image->url = DOKU_URL."lib/images/favicon.ico";
  87    $image->link = DOKU_URL;
  88    $rss->image = $image;
  89  
  90    if($mode == 'list'){
  91      rssListNamespace($rss,$ns);
  92    }else{
  93      rssRecentChanges($rss,$num,$ltype,$ns,$minor);
  94    }
  95  
  96    $feed = $rss->createFeed($type,'utf-8');
  97  
  98    // save cachefile
  99    io_saveFile($cache,$feed);
 100  
 101    // finally deliver
 102    print $feed;
 103  
 104  // ---------------------------------------------------------------- //
 105  
 106  /**
 107   * Add recent changed pages to a feed object
 108   *
 109   * @author Andreas Gohr <andi@splitbrain.org>
 110   */
 111  function rssRecentChanges(&$rss,$num,$ltype,$ns,$minor){
 112      global $conf;
 113      global $auth;
 114  
 115      if(!$num) $num = $conf['recent'];
 116      $guardmail = ($conf['mailguard'] != '' && $conf['mailguard'] != 'none');
 117  
 118  
 119      $flags = RECENTS_SKIP_DELETED;
 120      if(!$minor) $flags += RECENTS_SKIP_MINORS;
 121  
 122      $recents = getRecents(0,$num,$ns,$flags);
 123  
 124      foreach($recents as $recent){
 125          $item = new FeedItem();
 126          $meta = p_get_metadata($recent['id']);
 127  
 128          if($conf['useheading'] && $meta['title']){
 129              $item->title = $meta['title'];
 130          }else{
 131              $item->title = $recent['id'];
 132          }
 133          if($conf['rss_show_summary'] && !empty($recent['sum'])){
 134              $item->title .= ' - '.strip_tags($recent['sum']);
 135          }
 136  
 137          if(empty($ltype)) $ltype = $conf['rss_linkto'];
 138  
 139          switch ($ltype){
 140              case 'page':
 141                  $item->link = wl($recent['id'],'rev='.$recent['date'],true,'&');
 142                  break;
 143              case 'rev':
 144                  $item->link = wl($recent['id'],'do=revisions&rev='.$recent['date'],true,'&');
 145                  break;
 146              case 'current':
 147                  $item->link = wl($recent['id'], '', true,'&');
 148                  break;
 149              case 'diff':
 150              default:
 151                  $item->link = wl($recent['id'],'rev='.$recent['date'].'&do=diff',true,'&');
 152          }
 153  
 154          $item->description = $meta['description']['abstract'];
 155          $item->date        = date('r',$recent['date']);
 156          $cat = getNS($recent['id']);
 157          if($cat) $item->category = $cat;
 158  
 159          // FIXME should the user be pulled from metadata as well?
 160          $user = null;
 161          $user = @$recent['user']; // the @ spares time repeating lookup
 162          $item->author = '';
 163  
 164          if($user && $conf['useacl'] && $auth){
 165              $userInfo = $auth->getUserData($user);
 166              $item->author = $userInfo['name'];
 167              if($guardmail) {
 168              //cannot obfuscate because some RSS readers may check validity
 169                  $item->authorEmail = $user.'@'.$recent['ip'];
 170              }else{
 171                  $item->authorEmail = $userInfo['mail'];
 172              }
 173          }elseif($user){
 174              // this happens when no ACL but some Apache auth is used
 175              $item->author      = $user;
 176              $item->authorEmail = $user.'@'.$recent['ip'];
 177          }else{
 178              $item->authorEmail = 'anonymous@'.$recent['ip'];
 179          }
 180          $rss->addItem($item);
 181      }
 182  }
 183  
 184  /**
 185   * Add all pages of a namespace to a feedobject
 186   *
 187   * @author Andreas Gohr <andi@splitbrain.org>
 188   */
 189  function rssListNamespace(&$rss,$ns){
 190      require_once (DOKU_INC.'inc/search.php');
 191      global $conf;
 192  
 193      $ns=':'.cleanID($ns);
 194      $ns=str_replace(':','/',$ns);
 195  
 196      $data = array();
 197      sort($data);
 198      search($data,$conf['datadir'],'search_list','',$ns);
 199      foreach($data as $row){
 200          $item = new FeedItem();
 201  
 202          $id   = $row['id'];
 203          $date = filemtime(wikiFN($id));
 204          $meta = p_get_metadata($id);
 205  
 206          if($conf['useheading'] && $meta['title']){
 207              $item->title = $meta['title'];
 208          }else{
 209              $item->title = $id;
 210          }
 211  
 212          $item->link        = wl($id,'rev='.$date,true,'&');
 213          $item->description = $meta['description']['abstract'];
 214          $item->date        = date('r',$date);
 215          $rss->addItem($item);
 216    }
 217  }
 218  
 219  //Setup VIM: ex: et ts=4 enc=utf-8 :
 220  ?>