Version 0.0.33 beta:

- Corrected: XSS vulnerability patched (thanks to Stanislas D. !)
- Corrected: ATOM feed validates again.

diff --cc index.php
index e78733bf3e432c000efee23d09f9ade06eb187e6,e78733bf3e432c000efee23d09f9ade06eb187e6..011aeed99c6f5ebb2f4e71647236ec2c2a5501da
--- 1/index.php
--- 2/index.php
+++ b/index.php
@@@ -1,5 -1,5 +1,5 @@@
  <?php
--// Shaarli 0.0.32 beta - Shaare your links...
++// Shaarli 0.0.33 beta - Shaare your links...
  // The personal, minimalist, super-fast, no-database delicious clone. By sebsauvage.net
  // http://sebsauvage.net/wiki/doku.php?id=php:shaarli
  // Licence: http://www.opensource.org/licenses/zlib-license.php
@@@ -58,7 -58,7 +58,7 @@@ header("Last-Modified: " . gmdate("D, 
  header("Cache-Control: no-store, no-cache, must-revalidate");
  header("Cache-Control: post-check=0, pre-check=0", false);
  header("Pragma: no-cache");
--define('shaarli_version','0.0.32 beta');
++define('shaarli_version','0.0.33 beta');
  if (!is_dir($GLOBALS['config']['DATADIR'])) { mkdir($GLOBALS['config']['DATADIR'],0705); chmod($GLOBALS['config']['DATADIR'],0705); }
  if (!is_file($GLOBALS['config']['DATADIR'].'/.htaccess')) { file_put_contents($GLOBALS['config']['DATADIR'].'/.htaccess',"Allow from none\nDeny from all\n"); } // Protect data files.
  if ($GLOBALS['config']['ENABLE_LOCALCACHE'])
@@@ -117,6 -117,6 +117,12 @@@ function logm($message
      file_put_contents($GLOBALS['config']['DATADIR'].'/log.txt',$t,FILE_APPEND);
  }
  
++// Same as nl2br(), but escapes < and >
++function nl2br_escaped($html)
++{
++    return str_replace('>','&gt;',str_replace('<','&lt;',nl2br($html)));
++}
++
  /* Returns the small hash of a string
     eg. smallHash('20111006_131924') --> yZH23w
     Small hashes:
@@@ -515,8 -515,8 +521,8 @@@ class pageBuilde
          $this->tpl->assign('linkcount',count($LINKSDB));
          $this->tpl->assign('feedurl',htmlspecialchars(indexUrl()));
          $searchcrits=''; // Search criteria
--        if (!empty($_GET['searchtags'])) $searchcrits.='&searchtags='.$_GET['searchtags'];
--        elseif (!empty($_GET['searchterm'])) $searchcrits.='&searchterm='.$_GET['searchterm'];
++        if (!empty($_GET['searchtags'])) $searchcrits.='&searchtags='.urlencode($_GET['searchtags']);
++        elseif (!empty($_GET['searchterm'])) $searchcrits.='&searchterm='.urlencode($_GET['searchterm']);
          $this->tpl->assign('searchcrits',$searchcrits);
          $this->tpl->assign('source',indexUrl());
          $this->tpl->assign('version',shaarli_version);
@@@ -791,7 -791,7 +797,7 @@@ function showATOM(
          if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl;  // make permalink URL absolute
          $entries.='<entry><title>'.htmlspecialchars($link['title']).'</title><link href="'.$absurl.'" /><id>'.$guid.'</id>';
          if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.htmlspecialchars($iso8601date).'</updated>';
--        $entries.='<summary>'.nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))))."</summary>\n";
++        $entries.='<content type="html">'.htmlspecialchars(nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description'])))))."</content>\n";
          if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
          {
              foreach(explode(' ',$link['tags']) as $tag)
@@@ -803,14 -803,14 +809,14 @@@
      $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
      $feed.='<title>'.htmlspecialchars($GLOBALS['title']).'</title>';
      if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.htmlspecialchars($latestDate).'</updated>';
--    $feed.='<link rel="self" href="'.htmlspecialchars($pageaddr).'" />';
++    $feed.='<link rel="self" href="'.htmlspecialchars(serverUrl().$_SERVER["REQUEST_URI"]).'" />';
      if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
      {
          $feed.='<!-- PubSubHubbub Discovery -->';
          $feed.='<link rel="hub" href="'.htmlspecialchars($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
          $feed.='<!-- End Of PubSubHubbub Discovery -->';
      }
--    $feed.='<author><uri>'.htmlspecialchars($pageaddr).'</uri></author>';
++    $feed.='<author><name>'.htmlspecialchars($pageaddr).'</name><uri>'.htmlspecialchars($pageaddr).'</uri></author>';
      $feed.='<id>'.htmlspecialchars($pageaddr).'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
      $feed.=$entries;
      $feed.='</feed>';