includes/template.php
author Dan
Fri, 05 Oct 2007 01:57:00 -0400
changeset 162 e1a22031b5bd
parent 142 ca9118d9c0f2
child 163 ad00dc1f8706
permissions -rw-r--r--
Major revamps to the template parser. Fixed a few security holes that could allow PHP to be injected in untimely places in TPL code. Improved Ux for XSS attempt in tplWikiFormat. Documented many functions. Backported much cleaner parser from 2.0 branch. Beautified a lot of code in the depths of the template class. Pretty much a small-scale Extreme Makeover.

<?php

/*
 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
 * Version 1.0.2 (Coblynau)
 * Copyright (C) 2006-2007 Dan Fuhry
 *
 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
 */
 
class template {
  var $tpl_strings, $tpl_bool, $theme, $style, $no_headers, $additional_headers, $sidebar_extra, $sidebar_widgets, $toolbar_menu, $theme_list, $named_theme_list, $default_theme, $default_style, $plugin_blocks, $namespace_string, $style_list, $theme_loaded;
  
  /**
   * Set to true if the site is disabled and thus a message needs to be shown. This should ONLY be changed by common.php.
   * @var bool
   * @access private
   */
  
  var $site_disabled = false;
  
  /**
   * One of the absolute best parts of Enano :-P
   * @var string
   */
  
  var $fading_button = '';
  
  function __construct()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    dc_here('template: initializing all class variables');
    $this->tpl_bool    = Array();
    $this->tpl_strings = Array();
    $this->sidebar_extra = '';
    $this->toolbar_menu = '';
    $this->additional_headers = '';
    $this->plugin_blocks = Array();
    $this->theme_loaded = false;
    
    $this->fading_button = '<div style="background-image: url('.scriptPath.'/images/about-powered-enano-hover.png); background-repeat: no-repeat; width: 88px; height: 31px; margin: 0 auto;">
                              <a href="http://enanocms.org/" onclick="window.open(this.href); return false;"><img style="border-width: 0;" alt=" " src="'.scriptPath.'/images/about-powered-enano.png" onmouseover="domOpacity(this, 100, 0, 500);" onmouseout="domOpacity(this, 0, 100, 500);" /></a>
                            </div>';
    
    $this->theme_list = Array();
    $this->named_theme_list = Array();
    $e = $db->sql_query('SELECT theme_id,theme_name,enabled,default_style FROM '.table_prefix.'themes WHERE enabled=1 ORDER BY theme_order;');
    if(!$e) $db->_die('The list of themes could not be selected.');
    for($i=0;$i < $db->numrows(); $i++)
    {
      $this->theme_list[$i] = $db->fetchrow();
      $this->named_theme_list[$this->theme_list[$i]['theme_id']] = $this->theme_list[$i];
    }
    $db->free_result();
    $this->default_theme = $this->theme_list[0]['theme_id'];
    $dir = ENANO_ROOT.'/themes/'.$this->default_theme.'/css/';
    $list = Array();
    // Open a known directory, and proceed to read its contents
    if (is_dir($dir)) {
      if ($dh = opendir($dir)) {
        while (($file = readdir($dh)) !== false) {
          if(preg_match('#^(.*?)\.css$#i', $file) && $file != '_printable.css') {
            $list[] = substr($file, 0, strlen($file)-4);
          }
        }
        closedir($dh);
      }
    }
    
    $def = ENANO_ROOT.'/themes/'.$this->default_theme.'/css/'.$this->named_theme_list[$this->default_theme]['default_style'];
    if(file_exists($def))
    {
      $this->default_style = substr($this->named_theme_list[$this->default_theme]['default_style'], 0, strlen($this->named_theme_list[$this->default_theme]['default_style'])-4);
    } else {
      $this->default_style = $list[0];
    }
    
    $this->style_list = $list;
    
  }
  function template()
  {
    $this->__construct();
  }
  function sidebar_widget($t, $h)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if(!defined('ENANO_TEMPLATE_LOADED'))
    {
      $this->load_theme($session->theme, $session->style);
    }
    if(!$this->sidebar_widgets)
      $this->sidebar_widgets = '';
    $tplvars = $this->extract_vars('elements.tpl');
    $parser = $this->makeParserText($tplvars['sidebar_section_raw']);
    $parser->assign_vars(Array('TITLE'=>$t,'CONTENT'=>$h));
    $this->plugin_blocks[$t] = $h;
    $this->sidebar_widgets .= $parser->run();
  }
  function add_header($html)
  {
    $this->additional_headers .= "\n" . $html;
  }
  function get_css($s = false)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if(!defined('ENANO_TEMPLATE_LOADED'))
      $this->load_theme($session->theme, $session->style);
    $path = ( $s ) ? 'css/'.$s : 'css/'.$this->style.'.css';
    if ( !file_exists(ENANO_ROOT . '/themes/' . $this->theme . '/' . $path) )
    {
      echo "/* WARNING: Falling back to default file because file $path does not exist */\n";
      $path = 'css/' . $this->style_list[0] . '.css';
    }
    return $this->process_template($path);
  }
  function load_theme($name = false, $css = false)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    $this->theme = ( $name ) ? $name : $session->theme;
    $this->style = ( $css ) ? $css : $session->style;
    if ( !$this->theme )
    {
      $this->theme = $this->theme_list[0]['theme_id'];
      $this->style = substr($this->theme_list[0]['default_style'], 0, strlen($this->theme_list[0]['default_style'])-4);
    }
    $this->theme_loaded = true;
  }
  
  function init_vars()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    global $email;
    
    dc_here("template: initializing all variables");
    
    if(!$this->theme || !$this->style)
    {
      $this->load_theme();
    }
    
    if(defined('ENANO_TEMPLATE_LOADED'))
    {
      dc_here('template: access denied to call template::init_vars(), bailing out');
      die_semicritical('Illegal call', '<p>$template->load_theme was called multiple times, this is not supposed to happen. Exiting with fatal error.</p>');
    }
    
    define('ENANO_TEMPLATE_LOADED', '');
    
    $tplvars = $this->extract_vars('elements.tpl');
    
    dc_here('template: setting all template vars');
    
    if(isset($_SERVER['HTTP_USER_AGENT']) && strstr($_SERVER['HTTP_USER_AGENT'], 'MSIE'))
    {
      $this->add_header('
        <!--[if lt IE 7]>
        <script language="JavaScript">
        function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
        {
           var arVersion = navigator.appVersion.split("MSIE");
           var version = parseFloat(arVersion[1]);
           if (version >= 5.5 && typeof(document.body.filters) == "object")
           {
              for(var i=0; i<document.images.length; i++)
              {
                 var img = document.images[i];
                 continue;
                 var imgName = img.src.toUpperCase();
                 if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
                 {
                    var imgID = (img.id) ? "id=\'" + img.id + "\' " : "";
                    var imgClass = (img.className) ? "class=\'" + img.className + "\' " : "";
                    var imgTitle = (img.title) ? "title=\'" + img.title + "\' " : "title=\'" + img.alt + "\' ";
                    var imgStyle = "display:inline-block;" + img.style.cssText;
                    if (img.align == "left") imgStyle = "float:left;" + imgStyle;
                    if (img.align == "right") imgStyle = "float:right;" + imgStyle;
                    if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle;
                    var strNewHTML = "<span " + imgID + imgClass + imgTitle + " style=\\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";" + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\\\'" + img.src + "\\\', sizingMethod=\'scale\');\\"></span>";
                    img.outerHTML = strNewHTML;
                    i = i-1;
                 }
              }
           }   
        }
        window.attachEvent("onload", correctPNG);
        </script>
        <![endif]-->
        ');
    }
    
    // Get the "article" button text (depends on namespace)
    switch($paths->namespace) {
      case "Article":
      default:
        $ns = 'article';
        break;
      case "Admin":
        $ns = 'administration page';
        break;
      case "System":
        $ns = 'system message';
        break;
      case "File":
        $ns = 'uploaded file';
        break;
      case "Help":
        $ns = 'documentation page';
        break;
      case "User":
        $ns = 'user page';
        break;
      case "Special":
        $ns = 'special page';
        break;
      case "Template":
        $ns = 'template';
        break;
      case "Project":
        $ns = 'project page';
        break;
      case "Category":
        $ns = 'category';
        break;
    }
    $this->namespace_string = $ns;
    $code = $plugins->setHook('page_type_string_set');
    foreach ( $code as $cmd )
    {
      eval($cmd);
    }
    $ns =& $this->namespace_string;
    
    // Initialize the toolbar
    $tb = '';
    
    // Create "xx page" button
    
    $btn_selected = ( isset($tplvars['toolbar_button_selected'])) ? $tplvars['toolbar_button_selected'] : $tplvars['toolbar_button'];
    $parser = $this->makeParserText($btn_selected);
    
    $parser->assign_vars(array(
        'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxReset()); return false; }" title="View the page contents, all of the page contents, and nothing but the page contents (alt-a)" accesskey="a"',
        'PARENTFLAGS' => 'id="mdgToolbar_article"',
        'HREF' => makeUrl($paths->page, null, true),
        'TEXT' => $this->namespace_string
      ));
    
    $tb .= $parser->run();
    
    $button = $this->makeParserText($tplvars['toolbar_button']);
    
    // Page toolbar
    // Comments button
    if ( $session->get_permissions('read') && getConfig('enable_comments')=='1' && $paths->namespace != 'Special' && $paths->namespace != 'Admin' && $paths->cpage['comments_on'] == 1 )
    {
      
      $e = $db->sql_query('SELECT approved FROM '.table_prefix.'comments WHERE page_id=\''.$paths->cpage['urlname_nons'].'\' AND namespace=\''.$paths->namespace.'\';');
      if ( !$e )
      {
        $db->_die();
      }
      $nc = $db->numrows();
      $nu = 0;
      $na = 0;
      
      while ( $r = $db->fetchrow() )
      {  
        if ( !$r['approved'] )
        {
          $nu++;
        }
        else
        {
          $na++;
        }
      }
      
      $db->free_result();
      $n = ( $session->get_permissions('mod_comments') ) ? (string)$nc : (string)$na;
      if ( $session->get_permissions('mod_comments') && $nu > 0 )
      {
        $n .= ' total/'.$nu.' unapp.';
      }
      
      $button->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxComments()); return false; }" title="View the comments that other users have posted about this page (alt-c)" accesskey="c"',
          'PARENTFLAGS' => 'id="mdgToolbar_discussion"',
          'HREF' => makeUrl($paths->page, 'do=comments', true),
          'TEXT' => 'discussion ('.$n.')',
        ));
      
      $tb .= $button->run();
    }
    // Edit button
    if($session->get_permissions('read') && ($paths->namespace != 'Special' && $paths->namespace != 'Admin') && ( $session->get_permissions('edit_page') && ( ( $paths->page_protected && $session->get_permissions('even_when_protected') ) || !$paths->page_protected ) ) )
    {
      $button->assign_vars(array(
        'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxEditor()); return false; }" title="Edit the contents of this page (alt-e)" accesskey="e"',
        'PARENTFLAGS' => 'id="mdgToolbar_edit"',
        'HREF' => makeUrl($paths->page, 'do=edit', true),
        'TEXT' => 'edit this page'
        ));
      $tb .= $button->run();
    // View source button
    }
    else if($session->get_permissions('view_source') && ( !$session->get_permissions('edit_page') || !$session->get_permissions('even_when_protected') && $paths->page_protected ) && $paths->namespace != 'Special' && $paths->namespace != 'Admin') 
    {
      $button->assign_vars(array(
        'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxViewSource()); return false; }" title="View the source code (wiki markup) that this page uses (alt-e)" accesskey="e"',
        'PARENTFLAGS' => 'id="mdgToolbar_edit"',
        'HREF' => makeUrl($paths->page, 'do=viewsource', true),
        'TEXT' => 'view source'
        ));
      $tb .= $button->run();
    }
    // History button
    if ( $session->get_permissions('read') /* && $paths->wiki_mode */ && $paths->page_exists && $paths->namespace != 'Special' && $paths->namespace != 'Admin' && $session->get_permissions('history_view') )
    {
      $button->assign_vars(array(
        'FLAGS'       => 'onclick="if ( !KILL_SWITCH ) { void(ajaxHistory()); return false; }" title="View a log of actions taken on this page (alt-h)" accesskey="h"',
        'PARENTFLAGS' => 'id="mdgToolbar_history"',
        'HREF'        => makeUrl($paths->page, 'do=history', true),
        'TEXT'        => 'history'
        ));
      $tb .= $button->run();
    }
    
    $menubtn = $this->makeParserText($tplvars['toolbar_menu_button']);
    
    // Additional actions menu
    // Rename button
    if ( $session->get_permissions('read') && $paths->page_exists && ( $session->get_permissions('rename') && ( $paths->page_protected && $session->get_permissions('even_when_protected') || !$paths->page_protected ) ) && $paths->namespace != 'Special' && $paths->namespace != 'Admin' )
    {
      $menubtn->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxRename()); return false; }" title="Change the display name of this page (alt-r)" accesskey="r"',
          'HREF'  => makeUrl($paths->page, 'do=rename', true),
          'TEXT'  => 'rename',
        ));
      $this->toolbar_menu .= $menubtn->run();
    }
    
    // Vote-to-delete button
    if ( $paths->wiki_mode && $session->get_permissions('vote_delete') && $paths->page_exists && $paths->namespace != 'Special' && $paths->namespace != 'Admin')
    {
      $menubtn->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxDelVote()); return false; }" title="Vote to have this page deleted (alt-d)" accesskey="d"',
          'HREF'  => makeUrl($paths->page, 'do=delvote', true),
          'TEXT'  => 'vote to delete this page',
        ));
      $this->toolbar_menu .= $menubtn->run();
    }
    
    // Clear-votes button
    if ( $session->get_permissions('read') && $paths->wiki_mode && $paths->page_exists && $paths->namespace != 'Special' && $paths->namespace != 'Admin' && $session->get_permissions('vote_reset') && $paths->cpage['delvotes'] > 0)
    {
      $menubtn->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxResetDelVotes()); return false; }" title="Vote to have this page deleted (alt-y)" accesskey="y"',
          'HREF'  => makeUrl($paths->page, 'do=resetvotes', true),
          'TEXT'  => 'reset deletion votes',
        ));
      $this->toolbar_menu .= $menubtn->run();
    }
    
    // Printable page button
    if ( $paths->page_exists && $paths->namespace != 'Special' && $paths->namespace != 'Admin' )
    {
      $menubtn->assign_vars(array(
          'FLAGS' => 'title="View a version of this page that is suitable for printing"',
          'HREF'  => makeUrl($paths->page, 'printable=yes', true),
          'TEXT'  => 'view printable version',
        ));
      $this->toolbar_menu .= $menubtn->run();
    }
    
    // Protect button
    if($session->get_permissions('read') && $paths->wiki_mode && $paths->page_exists && $paths->namespace != 'Special' && $paths->namespace != 'Admin' && $session->get_permissions('protect'))
    {
      
      $label = $this->makeParserText($tplvars['toolbar_label']);
      $label->assign_vars(array('TEXT' => 'protection:'));
      $t0 = $label->run();
      
      $ctmp = ''; 
      if ( $paths->cpage['protected'] == 1 )
      {
        $ctmp=' style="text-decoration: underline;"';
      }
      $menubtn->assign_vars(array(
          'FLAGS' => 'accesskey="i" onclick="if ( !KILL_SWITCH ) { ajaxProtect(1); return false; }" id="protbtn_1" title="Prevents all non-administrators from editing this page. [alt-i]"'.$ctmp,
          'HREF'  => makeUrl($paths->page, 'do=protect&level=1', true),
          'TEXT'  => 'on'
        ));
      $t1 = $menubtn->run();
      
      $ctmp = '';
      if ( $paths->cpage['protected'] == 0 )
      {
        $ctmp=' style="text-decoration: underline;"';
      }
      $menubtn->assign_vars(array(
          'FLAGS' => 'accesskey="o" onclick="if ( !KILL_SWITCH ) { ajaxProtect(0); return false; }" id="protbtn_0" title="Allows everyone to edit this page. [alt-o]"'.$ctmp,
          'HREF'  => makeUrl($paths->page, 'do=protect&level=0', true),
          'TEXT'  => 'off'
        ));
      $t2 = $menubtn->run();
      
      $ctmp = '';
      if ( $paths->cpage['protected'] == 2 )
      {
        $ctmp = ' style="text-decoration: underline;"';
      }
      $menubtn->assign_vars(array(
          'FLAGS' => 'accesskey="p" onclick="if ( !KILL_SWITCH ) { ajaxProtect(2); return false; }" id="protbtn_2" title="Allows only users who have been registered for 4 days to edit this page. [alt-p]"'.$ctmp,
          'HREF'  => makeUrl($paths->page, 'do=protect&level=2', true),
          'TEXT'  => 'semi'
        ));
      $t3 = $menubtn->run();
      
      $this->toolbar_menu .= '        <table border="0" cellspacing="0" cellpadding="0">
          <tr>
            <td>'.$t0.'</td>
            <td>'.$t1.'</td>
            <td>'.$t2.'</td>
            <td>'.$t3.'</td>
          </tr>
        </table>';
    }
    
    // Wiki mode button
    if($session->get_permissions('read') && $paths->page_exists && $session->get_permissions('set_wiki_mode') && $paths->namespace != 'Special' && $paths->namespace != 'Admin')
    {
      // label at start
      $label = $this->makeParserText($tplvars['toolbar_label']);
      $label->assign_vars(array('TEXT' => 'page wiki mode:'));
      $t0 = $label->run();
      
      // on button
      $ctmp = '';
      if ( $paths->cpage['wiki_mode'] == 1 )
      {
        $ctmp = ' style="text-decoration: underline;"';
      }
      $menubtn->assign_vars(array(
          'FLAGS' => /* 'onclick="if ( !KILL_SWITCH ) { ajaxSetWikiMode(1); return false; }" id="wikibtn_1" title="Forces wiki functions to be allowed on this page."'. */ $ctmp,
          'HREF' => makeUrl($paths->page, 'do=setwikimode&level=1', true),
          'TEXT' => 'on'
        ));
      $t1 = $menubtn->run();
      
      // off button
      $ctmp = '';
      if ( $paths->cpage['wiki_mode'] == 0 )
      {
        $ctmp=' style="text-decoration: underline;"';
      }
      $menubtn->assign_vars(array(
          'FLAGS' => /* 'onclick="if ( !KILL_SWITCH ) { ajaxSetWikiMode(0); return false; }" id="wikibtn_0" title="Forces wiki functions to be disabled on this page."'. */ $ctmp,
          'HREF' => makeUrl($paths->page, 'do=setwikimode&level=0', true),
          'TEXT' => 'off'
        ));
      $t2 = $menubtn->run();
      
      // global button
      $ctmp = ''; 
      if ( $paths->cpage['wiki_mode'] == 2 )
      {
        $ctmp=' style="text-decoration: underline;"';
      }
      $menubtn->assign_vars(array(
          'FLAGS' => /* 'onclick="if ( !KILL_SWITCH ) { ajaxSetWikiMode(2); return false; }" id="wikibtn_2" title="Causes this page to use the global wiki mode setting (default)"'. */ $ctmp,
          'HREF' => makeUrl($paths->page, 'do=setwikimode&level=2', true),
          'TEXT' => 'global'
        ));
      $t3 = $menubtn->run();
      
      // Tack it onto the list of buttons that are already there...
      $this->toolbar_menu .= '        <table border="0" cellspacing="0" cellpadding="0">
          <tr>
            <td>'.$t0.'</td>
            <td>'.$t1.'</td>
            <td>'.$t2.'</td>
            <td>'.$t3.'</td>
          </tr>
        </table>';
    }
    
    // Clear logs button
    if ( $session->get_permissions('read') && $session->get_permissions('clear_logs') && $paths->namespace != 'Special' && $paths->namespace != 'Admin' )
    {
      $menubtn->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxClearLogs()); return false; }" title="Remove all edit and action logs for this page from the database. IRREVERSIBLE! (alt-l)" accesskey="l"',
          'HREF'  => makeUrl($paths->page, 'do=flushlogs', true),
          'TEXT'  => 'clear page logs',
        ));
      $this->toolbar_menu .= $menubtn->run();
    }
    
    // Delete page button
    if ( $session->get_permissions('read') && $session->get_permissions('delete_page') && $paths->page_exists && $paths->namespace != 'Special' && $paths->namespace != 'Admin' )
    {
      $s = 'delete this page';
      if ( $paths->cpage['delvotes'] == 1 )
      {
        $s .= ' (<b>'.$paths->cpage['delvotes'].'</b> vote)';
      }
      else if ( $paths->cpage['delvotes'] > 1 )
      {
        $s .= ' (<b>'.$paths->cpage['delvotes'].'</b> votes)';
      }
      
      $menubtn->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxDeletePage()); return false; }" title="Delete this page. This is always reversible unless the logs are cleared. (alt-k)" accesskey="k"',
          'HREF'  => makeUrl($paths->page, 'do=deletepage', true),
          'TEXT'  => $s,
        ));
      $this->toolbar_menu .= $menubtn->run();
      
    }
    
    // Password-protect button
    if(isset($paths->cpage['password']))
    {
      if ( $paths->cpage['password'] == '' )
      {
        $a = $session->get_permissions('password_set');
      }
      else
      {
        $a = $session->get_permissions('password_reset');
      }
    }
    else
    {
      $a = $session->get_permissions('password_set');
    }
    if ( $a && $session->get_permissions('read') && $paths->page_exists && $paths->namespace != 'Special' && $paths->namespace != 'Admin' )
    {
      // label at start
      $label = $this->makeParserText($tplvars['toolbar_label']);
      $label->assign_vars(array('TEXT' => 'page password:'));
      $t0 = $label->run();
      
      $menubtn->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxSetPassword()); return false; }" title="Require a password in order for this page to be viewed"',
          'HREF'  => '#',
          'TEXT'  => 'set',
        ));
      $t = $menubtn->run();
      
      $this->toolbar_menu .= '<table border="0" cellspacing="0" cellpadding="0"><tr><td>'.$t0.'</td><td><input type="password" id="mdgPassSetField" size="10" /></td><td>'.$t.'</td></tr></table>';
    }
    
    // Manage ACLs button
    if($session->get_permissions('edit_acl') || $session->user_level >= USER_LEVEL_ADMIN)
    {
      $menubtn->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { return ajaxOpenACLManager(); }" title="Manage who can do what with this page (alt-m)" accesskey="m"',
          'HREF'  => makeUrl($paths->page, 'do=aclmanager', true),
          'TEXT'  => 'manage page access',
        ));
      $this->toolbar_menu .= $menubtn->run();
    }
    
    // Administer page button
    if ( $session->user_level >= USER_LEVEL_ADMIN && $paths->page_exists && $paths->namespace != 'Special' && $paths->namespace != 'Admin' )
    {
      $menubtn->assign_vars(array(
          'FLAGS' => 'onclick="if ( !KILL_SWITCH ) { void(ajaxAdminPage()); return false; }" title="Administrative options for this page" accesskey="g"',
          'HREF'  => makeUrlNS('Special', 'Administration', 'module='.$paths->nslist['Admin'].'PageManager', true),
          'TEXT'  => 'administrative options',
        ));
      $this->toolbar_menu .= $menubtn->run();
    }
    
    if ( strlen($this->toolbar_menu) > 0 )
    {
      $button->assign_vars(array(
        'FLAGS'       => 'id="mdgToolbar_moreoptions" onclick="if ( !KILL_SWITCH ) { return false; }" title="Additional options for working with this page"',
        'PARENTFLAGS' => '',
        'HREF'        => makeUrl($paths->page, 'do=moreoptions', true),
        'TEXT'        => 'more options'
        ));
      $tb .= $button->run();
    }
    
    $is_opera = (isset($_SERVER['HTTP_USER_AGENT']) && strstr($_SERVER['HTTP_USER_AGENT'], 'Opera')) ? true : false;
    
    $this->tpl_bool = Array(
      'auth_admin'=>$session->user_level >= USER_LEVEL_ADMIN ? true : false,
      'user_logged_in'=>$session->user_logged_in,
      'opera'=>$is_opera,
      );
    
    if($session->sid_super) { $ash = '&amp;auth='.$session->sid_super; $asq = "?auth=".$session->sid_super; $asa = "&auth=".$session->sid_super; $as2 = htmlspecialchars(urlSeparator).'auth='.$session->sid_super; }
    else { $asq=''; $asa=''; $as2 = ''; $ash = ''; }
    
    $code = $plugins->setHook('compile_template');
    foreach ( $code as $cmd )
    {
      eval($cmd);
    }
    
    // Some additional sidebar processing
    if($this->sidebar_extra != '') {
      $se = $this->sidebar_extra;
      $parser = $this->makeParserText($tplvars['sidebar_section_raw']);
      $parser->assign_vars(Array('TITLE'=>'Links','CONTENT'=>$se));
      $this->sidebar_extra = $parser->run();
    }
    
    $this->sidebar_extra = $this->sidebar_extra.$this->sidebar_widgets;
    
    $this->tpl_bool['fixed_menus'] = false;
    /* if($this->sidebar_extra == '') $this->tpl_bool['right_sidebar'] = false;
    else */ $this->tpl_bool['right_sidebar'] = true;
    
    $this->tpl_bool['auth_rename'] = ( $paths->page_exists && ( $session->get_permissions('rename') && ( $paths->page_protected && $session->get_permissions('even_when_protected') || !$paths->page_protected ) ) && $paths->namespace != 'Special' && $paths->namespace != 'Admin');
    
    $this->tpl_bool['enable_uploads'] = ( getConfig('enable_uploads') == '1' && $session->get_permissions('upload_files') ) ? true : false;
    
    $this->tpl_bool['stupid_mode'] = false;
    
    if($paths->page == $paths->nslist['Special'].'Administration') $this->tpl_bool['in_admin'] = true;
    else $this->tpl_bool['in_admin'] = false;
    
    $p = ( isset($_GET['printable']) ) ? '/printable' : '';
    
    // Add the e-mail address client code to the header
    $this->add_header($email->jscode());
    
    // Generate the code for the Log out and Change theme sidebar buttons
    // Once again, the new template parsing system can be used here
    
    $parser = $this->makeParserText($tplvars['sidebar_button']);
    
    $parser->assign_vars(Array(
        'HREF'=>makeUrlNS('Special', 'Logout'),
        'FLAGS'=>'onclick="if ( !KILL_SWITCH ) { mb_logout(); return false; }"',
        'TEXT'=>'Log out',
      ));
    
    $logout_link = $parser->run();
    
    $parser->assign_vars(Array(
        'HREF'=>makeUrlNS('Special', 'Login/' . $paths->page),
        'FLAGS'=>'onclick="if ( !KILL_SWITCH ) { ajaxStartLogin(); return false; }"',
        'TEXT'=>'Log in',
      ));
    
    $login_link = $parser->run();
    
    $parser->assign_vars(Array(
        'HREF'=>makeUrlNS('Special', 'ChangeStyle/'.$paths->page),
        'FLAGS'=>'onclick="if ( !KILL_SWITCH ) { ajaxChangeStyle(); return false; }"',
        'TEXT'=>'Change theme',
      ));
    
    $theme_link = $parser->run();
    
    $parser->assign_vars(Array(
        'HREF'=>makeUrlNS('Special', 'Administration'),
        'FLAGS'=>'onclick="if ( !KILL_SWITCH ) { void(ajaxStartAdminLogin()); return false; }"',
        'TEXT'=>'Administration',
      ));
    
    $admin_link = $parser->run();
    
    $SID = ($session->sid_super) ? $session->sid_super : '';
    
    $urlname_clean = str_replace('\'', '\\\'', str_replace('\\', '\\\\', dirtify_page_id($paths->fullpage)));
    $urlname_clean = strtr( $urlname_clean, array( '<' => '&lt;', '>' => '&gt;' ) );
    
    $urlname_jssafe = sanitize_page_id($paths->fullpage);
    
    // Generate the dynamic javascript vars
    $js_dynamic = '    <script type="text/javascript">// <![CDATA[
      // This section defines some basic and very important variables that are used later in the static Javascript library.
      // SKIN DEVELOPERS: The template variable for this code block is {JS_DYNAMIC_VARS}. This MUST be inserted BEFORE the tag that links to the main Javascript lib.
      var title=\''. $urlname_jssafe .'\';
      var page_exists='. ( ( $paths->page_exists) ? 'true' : 'false' ) .';
      var scriptPath=\''. scriptPath .'\';
      var contentPath=\''.contentPath.'\';
      var ENANO_SID =\'' . $SID . '\';
      var auth_level=' . $session->auth_level . ';
      var USER_LEVEL_GUEST = ' . USER_LEVEL_GUEST . ';
      var USER_LEVEL_MEMBER = ' . USER_LEVEL_MEMBER . ';
      var USER_LEVEL_CHPREF = ' . USER_LEVEL_CHPREF . ';
      var USER_LEVEL_MOD = ' . USER_LEVEL_MOD . ';
      var USER_LEVEL_ADMIN = ' . USER_LEVEL_ADMIN . ';
      var editNotice = \'' . ( (getConfig('wiki_edit_notice')=='1') ? str_replace("\n", "\\\n", RenderMan::render(getConfig('wiki_edit_notice_text'))) : '' ) . '\';
      var prot = ' . ( ($paths->page_protected && !$session->get_permissions('even_when_protected')) ? 'true' : 'false' ) .'; // No, hacking this var won\'t work, it\'s re-checked on the server
      var ENANO_SPECIAL_CREATEPAGE = \''. makeUrl($paths->nslist['Special'].'CreatePage') .'\';
      var ENANO_CREATEPAGE_PARAMS = \'_do=&pagename='. $urlname_clean .'&namespace=' . $paths->namespace . '\';
      var ENANO_SPECIAL_CHANGESTYLE = \''. makeUrlNS('Special', 'ChangeStyle') .'\';
      var namespace_list = new Array();
      var AES_BITS = '.AES_BITS.';
      var AES_BLOCKSIZE = '.AES_BLOCKSIZE.';
      var pagepass = \''. ( ( isset($_REQUEST['pagepass']) ) ? sha1($_REQUEST['pagepass']) : '' ) .'\';
      var ENANO_THEME_LIST = \'';
          foreach($this->theme_list as $t) {
            if($t['enabled'])
            {
              $js_dynamic .= '<option value="'.$t['theme_id'].'"';
              // if($t['theme_id'] == $session->theme) $js_dynamic .= ' selected="selected"';
              $js_dynamic .= '>'.$t['theme_name'].'</option>';
            }
          }
      $js_dynamic .= '\';
      var ENANO_CURRENT_THEME = \''. $session->theme .'\';';
      foreach($paths->nslist as $k => $c)
      {
        $js_dynamic .= "namespace_list['{$k}'] = '$c';";
      }
      $js_dynamic .= "\n    //]]>\n    </script>";
      
    $tpl_strings = Array(
      'PAGE_NAME'=>htmlspecialchars($paths->cpage['name']),
      'PAGE_URLNAME'=> $urlname_clean,
      'SITE_NAME'=>htmlspecialchars(getConfig('site_name')),
      'USERNAME'=>$session->username,
      'SITE_DESC'=>htmlspecialchars(getConfig('site_desc')),
      'TOOLBAR'=>$tb,
      'SCRIPTPATH'=>scriptPath,
      'CONTENTPATH'=>contentPath,
      'ADMIN_SID_QUES'=>$asq,
      'ADMIN_SID_AMP'=>$asa,
      'ADMIN_SID_AMP_HTML'=>$ash,
      'ADMIN_SID_AUTO'=>$as2,
      'ADMIN_SID_RAW'=> ( is_string($session->sid_super) ? $session->sid_super : '' ),
      'ADDITIONAL_HEADERS'=>$this->additional_headers,
      'COPYRIGHT'=>RenderMan::parse_internal_links(getConfig('copyright_notice')),
      'TOOLBAR_EXTRAS'=>$this->toolbar_menu,
      'REQUEST_URI'=>$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'],
      'STYLE_LINK'=>makeUrlNS('Special', 'CSS'.$p, null, true), //contentPath.$paths->nslist['Special'].'CSS' . $p,
      'LOGIN_LINK'=>$login_link,
      'LOGOUT_LINK'=>$logout_link,
      'ADMIN_LINK'=>$admin_link,
      'THEME_LINK'=>$theme_link,
      'SEARCH_ACTION'=>makeUrlNS('Special', 'Search'),
      'INPUT_TITLE'=>( urlSeparator == '&' ? '<input type="hidden" name="title" value="' . htmlspecialchars( $paths->nslist[$paths->namespace] . $paths->cpage['urlname_nons'] ) . '" />' : ''),
      'INPUT_AUTH'=>( $session->sid_super ? '<input type="hidden" name="auth"  value="' . $session->sid_super . '" />' : ''),
      'TEMPLATE_DIR'=>scriptPath.'/themes/'.$this->theme,
      'THEME_ID'=>$this->theme,
      'STYLE_ID'=>$this->style,
      'JS_DYNAMIC_VARS'=>$js_dynamic,
      'UNREAD_PMS'=>$session->unread_pms,
      'URL_ABOUT_ENANO' => makeUrlNS('Special', 'About_Enano', '', true)
      );
    
    foreach ( $paths->nslist as $ns_id => $ns_prefix )
    {
      $tpl_strings[ 'NS_' . strtoupper($ns_id) ] = $ns_prefix;
    }
    
    $this->tpl_strings = array_merge($tpl_strings, $this->tpl_strings);
    list($this->tpl_strings['SIDEBAR_LEFT'], $this->tpl_strings['SIDEBAR_RIGHT'], $min) = $this->fetch_sidebar();
    $this->tpl_bool['sidebar_left']  = ( $this->tpl_strings['SIDEBAR_LEFT']  != $min) ? true : false;
    $this->tpl_bool['sidebar_right'] = ( $this->tpl_strings['SIDEBAR_RIGHT'] != $min) ? true : false;
    $this->tpl_bool['right_sidebar'] = $this->tpl_bool['sidebar_right']; // backward compatibility
    
    $code = $plugins->setHook('template_var_init_end');
    foreach ( $code as $cmd )
    {
      eval($cmd);
    }
  }
  
  function header($simple = false) 
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    ob_start();
    
    if(!$this->theme_loaded)
    {
      $this->load_theme($session->theme, $session->style);
    }
    
    $headers_sent = true;
    dc_here('template: generating and sending the page header');
    if(!defined('ENANO_HEADERS_SENT'))
      define('ENANO_HEADERS_SENT', '');
    if(!$this->no_headers) echo ( $simple ) ? $this->process_template('simple-header.tpl') : $this->process_template('header.tpl');
    if ( !$simple && $session->user_logged_in && $session->unread_pms > 0 )
    {
      echo $this->notify_unread_pms();
    }
    if ( !$simple && $session->sw_timed_out )
    {
      $login_link = makeUrlNS('Special', 'Login/' . $paths->fullpage, 'level=' . $session->user_level, true);
      echo '<div class="usermessage">';
      echo '<b>Your administrative session has timed out.</b> <a href="' . $login_link . '">Log in again</a>';
      echo '</div>';
    }
    if ( $this->site_disabled && $session->user_level >= USER_LEVEL_ADMIN && ( $paths->page != $paths->nslist['Special'] . 'Administration' ) )
    {
      $admin_link = makeUrlNS('Special', 'Administration', 'module=' . $paths->nslist['Admin'] . 'GeneralConfig', true);
      echo '<div class="usermessage"><b>The site is currently disabled and thus is only accessible to administrators.</b><br />
            You can re-enable the site through the <a href="' . $admin_link . '">administration panel</a>.
            </div>';
    }
  }
  function footer($simple = false)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    dc_here('template: generating and sending the page footer');
    if(!$this->no_headers) {
      
      if(!defined('ENANO_HEADERS_SENT'))
        $this->header();
      
      global $_starttime;
      if(isset($_GET['sqldbg']) && $session->get_permissions('mod_misc'))
      {
        echo '<h3>Query list as requested on URI</h3><pre style="margin-left: 1em">';
        echo $db->sql_backtrace();
        echo '</pre>';
      }
      
      $f = microtime_float();
      $f = $f - $_starttime;
      $f = round($f, 4);
      $dbg = 'Time: '.$f.'s  |  Queries: '.$db->num_queries;
      $t = ( $simple ) ? $this->process_template('simple-footer.tpl') : $this->process_template('footer.tpl');
      $t = str_replace('[[Stats]]', $dbg, $t);
      $t = str_replace('[[NumQueries]]', (string)$db->num_queries, $t);
      $t = str_replace('[[GenTime]]', (string)$f, $t);
      echo $t;
      
      ob_end_flush();
    }
    else return '';
  }
  function getHeader()
  {
    $headers_sent = true;
    dc_here('template: generating and sending the page header');
    if(!defined('ENANO_HEADERS_SENT'))
      define('ENANO_HEADERS_SENT', '');
    if(!$this->no_headers) return $this->process_template('header.tpl');
  }
  function getFooter()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    dc_here('template: generating and sending the page footer');
    if(!$this->no_headers) {
      global $_starttime;
      $t = '';
      
      if(isset($_GET['sqldbg']) && $session->get_permissions('mod_misc'))
      {
        $t .= '<h3>Query list as requested on URI</h3><pre style="margin-left: 1em">';
        $t .= $db->sql_backtrace();
        $t .= '</pre>';
      }
      
      $f = microtime_float();
      $f = $f - $_starttime;
      $f = round($f, 4);
      $dbg = 'Time: '.$f.'s  |  Queries: '.$db->num_queries;
      $t.= $this->process_template('footer.tpl');
      $t = str_replace('[[Stats]]', $dbg, $t);
      $t = str_replace('[[NumQueries]]', (string)$db->num_queries, $t);
      $t = str_replace('[[GenTime]]', (string)$f, $t);
      return $t;
    }
    else return '';
  }
  
  /**
   * Compiles and executes a template based on the current variables and booleans. Loads
   * the theme and initializes variables if needed. This mostly just calls child functions.
   * @param string File to process
   * @return string
   */
  
  function process_template($file)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if(!defined('ENANO_TEMPLATE_LOADED'))
    {
      $this->load_theme();
      $this->init_vars();
    }
    
    $compiled = $this->compile_template($file);
    return eval($compiled);
  }
  
  /**
   * Loads variables from the specified template file. Returns an associative array containing the variables.
   * @param string Template file to process (elements.tpl)
   * @return array
   */
  
  function extract_vars($file)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    
    // Sometimes this function gets called before the theme is loaded
    // This is a bad coding practice so this function will always be picky.
    if ( !$this->theme )
    {
      die('$template->extract_vars(): theme not yet loaded, so we can\'t open template files yet...this is a bug and should be reported.<br /><br />Backtrace, most recent call first:<pre>'.enano_debug_print_backtrace(true).'</pre>');
    }
    
    // Full pathname of template file
    $tpl_file_fullpath = ENANO_ROOT . '/themes/' . $this->theme . '/' . $file;
    
    // Make sure the template even exists
    if ( !is_file($tpl_file_fullpath) )
    {
      die_semicritical('Cannot find template file',
                       '<p>The template parser was asked to load the file "' . htmlspecialchars($filename) . '", but that file couldn\'t be found in the directory for
                           the current theme.</p>
                        <p>Additional debugging information:<br />
                           <b>Theme currently in use: </b>' . $this->theme . '<br />
                           <b>Requested file: </b>' . $file . '
                           </p>');
    }
    // Retrieve file contents
    $text = file_get_contents($tpl_file_fullpath);
    if ( !$text )
    {
      return false;
    }
    
    // Get variables, regular expressions FTW
    preg_match_all('#<\!-- VAR ([A-z0-9_-]*) -->(.*?)<\!-- ENDVAR \\1 -->#is', $text, $matches);
    
    // Initialize return values
    $tplvars = Array();
    
    // Loop through each match, setting $tplvars[ $first_subpattern ] to $second_subpattern
    for ( $i = 0; $i < sizeof($matches[1]); $i++ )
    {
      $tplvars[ $matches[1][$i] ] = $matches[2][$i];
    }
    
    // All done!
    return $tplvars;
  }
  
  /**
   * Compiles a block of template code.
   * @param string The text to process
   * @return string
   */
  
  function compile_tpl_code($text)
  {
    // A random seed used to salt tags
    $seed = md5 ( microtime() . mt_rand() );
    
    // Strip out PHP sections
    preg_match_all('/<\?php(.+?)\?>/is', $text, $php_matches);
    
    foreach ( $php_matches[0] as $i => $match )
    {
      // Substitute the PHP section with a random tag
      $tag = "{PHP:$i:$seed}";
      $text = str_replace_once($match, $tag, $text);
    }
    
    // Escape slashes and single quotes in template code
    $text = str_replace('\\', '\\\\', $text);
    $text = str_replace('\'', '\\\'', $text);
    
    // Initialize the PHP compiled code
    $text = 'ob_start(); echo \''.$text.'\'; $tpl_code = ob_get_contents(); ob_end_clean(); return $tpl_code;';
    
    ##
    ## Main rules
    ##
    
    //
    // Conditionals
    //
    
    // If-else-end
    $text = preg_replace('/<!-- BEGIN ([A-z0-9_-]+?) -->(.*?)<!-- BEGINELSE \\1 -->(.*?)<!-- END \\1 -->/is', '\'; if ( $this->tpl_bool[\'\\1\'] ) { echo \'\\2\'; } else { echo \'\\3\'; } echo \'', $text);
    
    // If-end
    $text = preg_replace('/<!-- BEGIN ([A-z0-9_-]+?) -->(.*?)<!-- END \\1 -->/is', '\'; if ( $this->tpl_bool[\'\\1\'] ) { echo \'\\2\'; } echo \'', $text);
    
    // If not-else-end
    $text = preg_replace('/<!-- BEGINNOT ([A-z0-9_-]+?) -->(.*?)<!-- BEGINELSE \\1 -->(.*?)<!-- END \\1 -->/is', '\'; if ( !$this->tpl_bool[\'\\1\'] ) { echo \'\\2\'; } else { echo \'\\3\'; } echo \'', $text);
    
    // If not-end
    $text = preg_replace('/<!-- BEGINNOT ([A-z0-9_-]+?) -->(.*?)<!-- END \\1 -->/is', '\'; if ( !$this->tpl_bool[\'\\1\'] ) { echo \'\\2\'; } echo \'', $text);
    
    // If set-else-end
    $text = preg_replace('/<!-- IFSET ([A-z0-9_-]+?) -->(.*?)<!-- BEGINELSE \\1 -->(.*?)<!-- END \\1 -->/is', '\'; if ( isset($this->tpl_strings[\'\\1\']) ) { echo \'\\2\'; } else { echo \'\\3\'; } echo \'', $text);
    
    // If set-end
    $text = preg_replace('/<!-- IFSET ([A-z0-9_-]+?) -->(.*?)<!-- END \\1 -->/is', '\'; if ( isset($this->tpl_strings[\'\\1\']) ) { echo \'\\2\'; } echo \'', $text);
    
    // If plugin loaded-else-end
    $text = preg_replace('/<!-- IFPLUGIN ([A-z0-9_\.-]+?) -->(.*?)<!-- BEGINELSE \\1 -->(.*?)<!-- END \\1 -->/is', '\'; if ( getConfig(\'plugin_\\1\') == \'1\' ) { echo \'\\2\'; } else { echo \'\\3\'; } echo \'', $text);
    
    // If plugin loaded-end
    $text = preg_replace('/<!-- IFPLUGIN ([A-z0-9_\.-]+?) -->(.*?)<!-- END \\1 -->/is', '\'; if ( getConfig(\'plugin_\\1\') == \'1\' ) { echo \'\\2\'; } echo \'', $text);
    
    //
    // Data substitution/variables
    //
    
    // System messages
    $text = preg_replace('/<!-- SYSMSG ([A-z0-9\._-]+?) -->/is', '\' . $this->tplWikiFormat($pages->sysMsg(\'\\1\')) . \'', $text);
    
    // Template variables
    $text = preg_replace('/\{([A-z0-9_-]+?)\}/is', '\' . $this->tpl_strings[\'\\1\'] . \'', $text);
    
    // Reinsert PHP
    
    foreach ( $php_matches[1] as $i => $match )
    {
      // Substitute the random tag with the "real" PHP code
      $tag = "{PHP:$i:$seed}";
      $text = str_replace_once($tag, "'; $match echo '", $text);
    }
    
    return $text;  
    
  }
  
  /**
   * Compiles the contents of a given template file, possibly using a cached copy, and returns the compiled code.
   * @param string Filename of template (header.tpl)
   * @return string
   */
  
  function compile_template($filename)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    
    // Full path to template file
    $tpl_file_fullpath = ENANO_ROOT . '/themes/' . $this->theme . '/' . $filename;
    
    // Make sure the file exists
    if ( !is_file($tpl_file_fullpath) )
    {
      die_semicritical('Cannot find template file',
                       '<p>The template parser was asked to load the file "' . htmlspecialchars($filename) . '", but that file couldn\'t be found in the directory for
                           the current theme.</p>
                        <p>Additional debugging information:<br />
                           <b>Theme currently in use: </b>' . $this->theme . '<br />
                           <b>Requested file: </b>' . $file . '
                           </p>');
    }
    
    // Check for cached copy
    // This will make filenames in the pattern of theme-file.tpl.php
    $cache_file = ENANO_ROOT . '/cache/' . $this->theme . '-' . str_replace('/', '-', $filename) . '.php';
    
    // Only use cached copy if caching is enabled
    //   (it is enabled by default I think)
    if ( file_exists($cache_file) && getConfig('cache_thumbs') == '1' )
    {
      // Cache files are auto-generated, but otherwise are normal PHP files
      include($cache_file);
      
      // Fetch content of the ORIGINAL
      $text = file_get_contents($tpl_file_fullpath);
      
      // $md5 will be set by the cached file
      // This makes sure that a cached copy of the template is used only if its MD5
      // matches the MD5 of the file that the compiled file was compiled from.
      if ( isset($md5) && $md5 == md5($text) )
      {
        return str_replace('\\"', '"', $tpl_text);
      }
    }
    
    // We won't use the cached copy here
    $text = file_get_contents($tpl_file_fullpath);
    
    // This will be used later when writing the cached file
    $md5 = md5($text);
    
    // Preprocessing and checks complete - compile the code
    $text = $this->compile_tpl_code($text);
    
    // Perhaps caching is enabled and the admin has changed the template?
    if ( is_writable( ENANO_ROOT . '/cache/' ) && getConfig('cache_thumbs') == '1' )
    {
      $h = fopen($cache_file, 'w');
      if ( !$h )
      {
        // Couldn't open the file - silently ignore and return
        return $text;
      }
      
      // Escape the compiled code so it can be eval'ed
      $text_escaped = addslashes($text);
      $notice = <<<EOF

/*
 * NOTE: This file was automatically generated by Enano and is based on compiled code. Do not edit this file.
 * If you edit this file, any changes you make will be lost the next time the associated source template file is edited.
 */

EOF;
      // This is really just a normal PHP file that sets a variable or two and exits.
      // $tpl_text actually will contain the compiled code
      fwrite($h, '<?php ' . $notice . ' $md5 = \'' . $md5 . '\'; $tpl_text = \'' . $text_escaped . '\'; ?>');
      fclose($h);
    }
    
    return $text; //('<pre>'.htmlspecialchars($text).'</pre>');
  }
  
  
  /**
   * Compiles (parses) some template code with the current master set of variables and booleans.
   * @param string Text to process
   * @return string
   */
  
  function compile_template_text($text)
  {
    // this might do something else in the future, possibly cache large templates
    return $this->compile_tpl_code($text);
  }
  
  /**
   * For convenience - compiles AND parses some template code.
   * @param string Text to process
   * @return string
   */
  
  function parse($text)
  {
    $text = $this->compile_template_text($text);
    return eval($text);
  }
  
  // Steps to turn this:
  //   [[Project:Community Portal]]
  // into this:
  //   <a href="/Project:Community_Portal">Community Portal</a>
  // Must be done WITHOUT creating eval'ed code!!!
  
  // 1. preg_replace \[\[([a-zA-Z0-9 -_:]*?)\]\] with <a href="'.contentPath.'\\1">\\1</a>
  // 2. preg_match_all <a href="'.preg_quote(contentPath).'([a-zA-Z0-9 -_:]*?)">
  // 3. For each match, replace matches with identifiers
  // 4. For each match, str_replace ' ' with '_'
  // 5. For each match, str_replace match_id:random_val with $matches[$match_id]
  
  // The template language is really a miniature programming language; with variables, conditionals, everything!
  // So you can implement custom logic into your sidebar if you wish.
  // "Real" PHP support coming soon :-D
  
  /**
   * Takes a blob of HTML with the specially formatted template-oriented wikitext and formats it. Does not use eval().
   * This function butchers every coding standard in Enano and should eventually be rewritten. The fact is that the
   * code _works_ and does a good job of checking for errors and cleanly complaining about them.
   * @param string Text to process
   * @param bool Ignored for backwards compatibility
   * @param string File to get variables for sidebar data from
   * @return string
   */
  
  function tplWikiFormat($message, $filter_links = false, $filename = 'elements.tpl')
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    $filter_links = false;
    $tplvars = $this->extract_vars($filename);
    if($session->sid_super) $as = htmlspecialchars(urlSeparator).'auth='.$session->sid_super;
    else $as = '';
    error_reporting(E_ALL);
    $random_id = sha1(microtime().''); // A temp value
    
    /*
     * PREPROCESSOR
     */
    
    // Variables
    
    preg_match_all('#\$([A-Z_-]+)\$#', $message, $links);
    $links = $links[1];
    
    for($i=0;$i<sizeof($links);$i++)
    {
      $message = str_replace('$'.$links[$i].'$', $this->tpl_strings[$links[$i]], $message);
    }
    
    // Conditionals
    
    preg_match_all('#\{if ([A-Za-z0-9_ \(\)&\|\!-]*)\}(.*?)\{\/if\}#is', $message, $links);
    
    // Temporary exception from coding standards - using tab length of 4 here for clarity
    for ( $i = 0; $i < sizeof($links[1]); $i++ )
    {
        $condition =& $links[1][$i];
        $message = str_replace('{if '.$condition.'}'.$links[2][$i].'{/if}', '{CONDITIONAL:'.$i.':'.$random_id.'}', $message);
        
        // Time for some manual parsing...
        $chk = false;
        $current_id = '';
        $prn_level = 0;
        // Used to keep track of where we are in the conditional
        // Object of the game: turn {if this && ( that OR !something_else )} ... {/if} into if( ( isset($this->tpl_bool['that']) && $this->tpl_bool['that'] ) && ...
        // Method of attack: escape all variables, ignore all else. Non-valid code is filtered out by a regex above.
        $in_var_now = true;
        $in_var_last = false;
        $current_var = '';
        $current_var_start_pos = 0;
        $current_var_end_pos     = 0;
        $j = -1;
        $condition = $condition . ' ';
        $d = strlen($condition);
        while($j < $d)
        {
            $j++;
            $in_var_last = $in_var_now;
            
            $char = substr($condition, $j, 1);
            $in_var_now = ( preg_match('#^([A-z0-9_]*){1}$#', $char) ) ? true : false;
            if(!$in_var_last && $in_var_now)
            {
                $current_var_start_pos = $j;
            }
            if($in_var_last && !$in_var_now)
            {
                $current_var_end_pos = $j;
            }
            if($in_var_now)
            {
                $current_var .= $char;
                continue;
            }
            // OK we are not inside of a variable. That means that we JUST hit the end because the counter ($j) will be advanced to the beginning of the next variable once processing here is complete.
            if($char != ' ' && $char != '(' && $char != ')' && $char != 'A' && $char != 'N' && $char != 'D' && $char != 'O' && $char != 'R' && $char != '&' && $char != '|' && $char != '!' && $char != '<' && $char != '>' && $char != '0' && $char != '1' && $char != '2' && $char != '3' && $char != '4' && $char != '5' && $char != '6' && $char != '7' && $char != '8' && $char != '9')
            {
                // XSS attack! Bail out
                $errmsg    = '<p><b>Error:</b> Syntax error (possibly XSS attack) caught in template code:</p>';
                $errmsg .= '<pre>';
                $errmsg .= '{if '.htmlspecialchars($condition).'}';
                $errmsg .= "\n    ";
                for ( $k = 0; $k < $j; $k++ )
                {
                    $errmsg .= " ";
                }
                // Show position of error
                $errmsg .= '<span style="color: red;">^</span>';
                $errmsg .= '</pre>';
                $message = str_replace('{CONDITIONAL:'.$i.':'.$random_id.'}', $errmsg, $message);
                continue 2;
            }
            if($current_var != '')
            {
                $cd = '( isset($this->tpl_bool[\''.$current_var.'\']) && $this->tpl_bool[\''.$current_var.'\'] )';
                $cvt = substr($condition, 0, $current_var_start_pos) . $cd . substr($condition, $current_var_end_pos, strlen($condition));
                $j = $j + strlen($cd) - strlen($current_var);
                $current_var = '';
                $condition = $cvt;
                $d = strlen($condition);
            }
        }
        $condition = substr($condition, 0, strlen($condition)-1);
        $condition = '$chk = ( '.$condition.' ) ? true : false;';
        eval($condition);
        
        if($chk)
        {
            if(strstr($links[2][$i], '{else}')) $c = substr($links[2][$i], 0, strpos($links[2][$i], '{else}'));
            else $c = $links[2][$i];
            $message = str_replace('{CONDITIONAL:'.$i.':'.$random_id.'}', $c, $message);
        }
        else
        {
            if(strstr($links[2][$i], '{else}')) $c = substr($links[2][$i], strpos($links[2][$i], '{else}')+6, strlen($links[2][$i]));
            else $c = '';
            $message = str_replace('{CONDITIONAL:'.$i.':'.$random_id.'}', $c, $message);
        }
    }
    
    preg_match_all('#\{!if ([A-Za-z_-]*)\}(.*?)\{\/if\}#is', $message, $links);
    
    for($i=0;$i<sizeof($links[1]);$i++)
    {
      $message = str_replace('{!if '.$links[1][$i].'}'.$links[2][$i].'{/if}', '{CONDITIONAL:'.$i.':'.$random_id.'}', $message);
      if(isset($this->tpl_bool[$links[1][$i]]) && $this->tpl_bool[$links[1][$i]]) {
        if(strstr($links[2][$i], '{else}')) $c = substr($links[2][$i], strpos($links[2][$i], '{else}')+6, strlen($links[2][$i]));
        else $c = '';
        $message = str_replace('{CONDITIONAL:'.$i.':'.$random_id.'}', $c, $message);
      } else {
        if(strstr($links[2][$i], '{else}')) $c = substr($links[2][$i], 0, strpos($links[2][$i], '{else}'));
        else $c = $links[2][$i];
        $message = str_replace('{CONDITIONAL:'.$i.':'.$random_id.'}', $c, $message);
      }
    }
    
    /*
     * HTML RENDERER
     */
     
    // Images
    $j = preg_match_all('#\[\[:'.$paths->nslist['File'].'([\w\s0-9_\(\)!@%\^\+\|\.-]+?)\]\]#is', $message, $matchlist);
    $matches = Array();
    $matches['images'] = $matchlist[1];
    for($i=0;$i<sizeof($matchlist[1]);$i++)
    {
      if(isPage($paths->nslist['File'].$matches['images'][$i]))
      {
        $message = str_replace('[[:'.$paths->nslist['File'].$matches['images'][$i].']]',
                               '<img alt="'.$matches['images'][$i].'" style="border: 0" src="'.makeUrlNS('Special', 'DownloadFile/'.$matches['images'][$i]).'" />',
                               $message);
      }
    }
    
    // Internal links
    
    $text_parser = $this->makeParserText($tplvars['sidebar_button']);
    
    preg_match_all("#\[\[([^\|\]\n\a\r\t]*?)\]\]#is", $message, $il);
    for($i=0;$i<sizeof($il[1]);$i++)
    {
      $href = makeUrl(str_replace(' ', '_', $il[1][$i]), null, true);
      $text_parser->assign_vars(Array(  
          'HREF'  => $href,
          'FLAGS' => '',
          'TEXT'  => $il[1][$i]
        ));
      $message = str_replace("[[{$il[1][$i]}]]", $text_parser->run(), $message);
    }
    
    preg_match_all('#\[\[([^\|\]\n\a\r\t]*?)\|([^\]\r\n\a\t]*?)\]\]#is', $message, $il);
    for($i=0;$i<sizeof($il[1]);$i++)
    {
      $href = makeUrl(str_replace(' ', '_', $il[1][$i]), null, true);
      $text_parser->assign_vars(Array(
          'HREF'  => $href,
          'FLAGS' => '',
          'TEXT'  => $il[2][$i]
        ));
      $message = str_replace("[[{$il[1][$i]}|{$il[2][$i]}]]", $text_parser->run(), $message);
    }
    
    // External links
    // $message = preg_replace('#\[(http|ftp|irc):\/\/([a-z0-9\/:_\.\?&%\#@_\\\\-]+?) ([^\]]+)\\]#', '<a href="\\1://\\2">\\3</a><br style="display: none;" />', $message);
    // $message = preg_replace('#\[(http|ftp|irc):\/\/([a-z0-9\/:_\.\?&%\#@_\\\\-]+?)\\]#', '<a href="\\1://\\2">\\1://\\2</a><br style="display: none;" />', $message);
    
    preg_match_all('#\[(http|ftp|irc):\/\/([a-z0-9\/:_\.\?&%\#@_\\\\-]+?)\\ ([^\]]+)]#', $message, $ext_link);
    
    for ( $i = 0; $i < count($ext_link[0]); $i++ )
    {
      $text_parser->assign_vars(Array(  
          'HREF'  => "{$ext_link[1][$i]}://{$ext_link[2][$i]}",
          'FLAGS' => '',
          'TEXT'  => $ext_link[3][$i]
        ));
      $message = str_replace($ext_link[0][$i], $text_parser->run(), $message);
    }
    
    preg_match_all('#\[(http|ftp|irc):\/\/([a-z0-9\/:_\.\?&%\#@_\\\\-]+?)\\]#', $message, $ext_link);
    
    for ( $i = 0; $i < count($ext_link[0]); $i++ )
    {
      $text_parser->assign_vars(Array(  
          'HREF'  => "{$ext_link[1][$i]}://{$ext_link[2][$i]}",
          'FLAGS' => '',
          'TEXT'  => htmlspecialchars("{$ext_link[1][$i]}://{$ext_link[2][$i]}")
        ));
      $message = str_replace($ext_link[0][$i], $text_parser->run(), $message);
    }
    
    $parser1 = $this->makeParserText($tplvars['sidebar_section']);
    $parser2 = $this->makeParserText($tplvars['sidebar_section_raw']);
                            
    preg_match_all('#\{slider(2|)=([^\}]*?)\}(.*?)\{\/slider(2|)\}#is',  $message, $sb);
    
    // Modified to support the sweet new template var system
    for($i=0;$i<sizeof($sb[1]);$i++)
    {
      $p = ($sb[1][$i] == '2') ? $parser2 : $parser1;
      $p->assign_vars(Array('TITLE'=>$sb[2][$i],'CONTENT'=>$sb[3][$i]));
      $message = str_replace("{slider{$sb[1][$i]}={$sb[2][$i]}}{$sb[3][$i]}{/slider{$sb[4][$i]}}", $p->run(), $message);
    }
    
    /*
    Extras ;-)
    $message = preg_replace('##is', '', $message);
    $message = preg_replace('##is', '', $message);
    $message = preg_replace('##is', '', $message);
    $message = preg_replace('##is', '', $message);
    $message = preg_replace('##is', '', $message);
    */
    
    //die('<pre>'.htmlspecialchars($message).'</pre>');
    //eval($message); exit;
    return $message;
  }
  
  /**
   * Print a text field that auto-completes a username entered into it.
   * @param string $name - the name of the form field
   * @return string
   */
   
  function username_field($name, $value = false)
  {
    $randomid = md5( time() . microtime() . mt_rand() );
    $text = '<input name="'.$name.'" onkeyup="ajaxUserNameComplete(this)" autocomplete="off" type="text" size="30" id="userfield_'.$randomid.'"';
    if($value) $text .= ' value="'.$value.'"';
    $text .= ' />';
    return $text;
  }
  
  /**
   * Print a text field that auto-completes a page name entered into it.
   * @param string $name - the name of the form field
   * @return string
   */
   
  function pagename_field($name, $value = false)
  {
    $randomid = md5( time() . microtime() . mt_rand() );
    $text = '<input name="'.$name.'" onkeyup="ajaxPageNameComplete(this)" type="text" size="30" id="pagefield_'.$randomid.'"';
    if($value) $text .= ' value="'.$value.'"';
    $text .= ' />';
    $text .= '<script type="text/javascript">
        var inp = document.getElementById(\'pagefield_' . $randomid . '\');
        var f = get_parent_form(inp);
        if ( f )
        {
          if ( typeof(f.onsubmit) != \'function\' )
          {
            f.onsubmit = function() {
              if ( !submitAuthorized )
              {
                return false;
              }
            }
          }
        }</script>';
    return $text;
  }
  
  /**
   * Sends a textarea that can be converted to and from a TinyMCE widget on the fly.
   * @param string The name of the form element
   * @param string The initial content. Optional, defaults to blank
   * @param int Rows in textarea
   * @param int Columns in textarea
   * @return string HTML and Javascript code.
   */
  
  function tinymce_textarea($name, $content = '', $rows = 20, $cols = 60)
  {
    $randomid = md5(microtime() . mt_rand());
    $html = '';
    $html .= '<textarea name="' . $name . '" rows="'.$rows.'" cols="'.$cols.'" style="width: 100%;" id="toggleMCEroot_'.$randomid.'">' . $content . '</textarea>';
    $html .= '<div style="float: right; display: table;" id="mceSwitchAgent_' . $randomid . '">text editor&nbsp;&nbsp;|&nbsp;&nbsp;<a href="#" onclick="if ( !KILL_SWITCH ) { toggleMCE_'.$randomid.'(); return false; }">graphical editor</a></div>';
    $html .= '<script type="text/javascript">
                // <![CDATA[
                function toggleMCE_'.$randomid.'()
                {
                  var the_obj = document.getElementById(\'toggleMCEroot_' . $randomid . '\');
                  var panel = document.getElementById(\'mceSwitchAgent_' . $randomid . '\');
                  if ( the_obj.dnIsMCE == "yes" )
                  {
                    $dynano(the_obj).destroyMCE();
                    panel.innerHTML = \'text editor&nbsp;&nbsp;|&nbsp;&nbsp;<a href="#" onclick="if ( !KILL_SWITCH ) { toggleMCE_'.$randomid.'(); return false; }">graphical editor</a>\';
                  }
                  else
                  {
                    $dynano(the_obj).switchToMCE();
                    panel.innerHTML = \'<a href="#" onclick="if ( !KILL_SWITCH ) { toggleMCE_'.$randomid.'(); return false; }">text editor</a>&nbsp;&nbsp;|&nbsp;&nbsp;graphical editor\';
                  }
                }
                // ]]>
              </script>';
    return $html;
  }
  
  /**
   * Allows individual parsing of template files. Similar to phpBB but follows the spirit of object-oriented programming ;)
   * Returns on object of class templateIndividual. Usage instructions can be found in the inline docs for that class.
   * @param $filename the filename of the template to be parsed
   * @return object
   */
   
  function makeParser($filename)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    $filename = ENANO_ROOT.'/themes/'.$template->theme.'/'.$filename;
    if(!file_exists($filename)) die('templateIndividual: file '.$filename.' does not exist');
    $code = file_get_contents($filename);
    $parser = new templateIndividual($code);
    return $parser;
  }
  
  /**
   * Same as $template->makeParser(), but takes a string instead of a filename.
   * @param $text the text to parse
   * @return object
   */
   
  function makeParserText($code)
  {
    $parser = new templateIndividual($code);
    return $parser;
  }
  
  /**
   * Fetch the HTML for a plugin-added sidebar block
   * @param $name the plugin name
   * @return string
   */
   
  function fetch_block($id)
  {
    if(isset($this->plugin_blocks[$id])) return $this->plugin_blocks[$id];
    else return false;
  }
  
  /**
   * Fetches the contents of both sidebars.
   * @return array - key 0 is left, key 1 is right
   * @example list($left, $right) = $template->fetch_sidebar();
   */
   
  function fetch_sidebar()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    
    $left = '';
    $right = '';
    
    if ( !$this->fetch_block('Links') )
      $this->initLinksWidget();
    
    $q = $db->sql_query('SELECT item_id,sidebar_id,block_name,block_type,block_content FROM '.table_prefix.'sidebar WHERE item_enabled=1 ORDER BY sidebar_id ASC, item_order ASC;');
    if(!$q) $db->_die('The sidebar text data could not be selected.');
    
    $vars = $this->extract_vars('elements.tpl');
    
    if(isset($vars['sidebar_top'])) 
    {
      $left  .= $this->parse($vars['sidebar_top']);
      $right .= $this->parse($vars['sidebar_top']);
    }
    while($row = $db->fetchrow())
    {
      switch($row['block_type'])
      {
        case BLOCK_WIKIFORMAT:
        default:
          $parser = $this->makeParserText($vars['sidebar_section']);
          $c = RenderMan::render($row['block_content']);
          break;
        case BLOCK_TEMPLATEFORMAT:
          $parser = $this->makeParserText($vars['sidebar_section']);
          $c = $this->tplWikiFormat($row['block_content']);
          break;
        case BLOCK_HTML:
          $parser = $this->makeParserText($vars['sidebar_section_raw']);
          $c = $row['block_content'];
          break;
        case BLOCK_PHP:
          $parser = $this->makeParserText($vars['sidebar_section_raw']);
          ob_start();
          @eval($row['block_content']);
          $c = ob_get_contents();
          ob_end_clean();
          break;
        case BLOCK_PLUGIN:
          $parser = $this->makeParserText($vars['sidebar_section_raw']);
          $c = (gettype($this->fetch_block($row['block_content'])) == 'string') ? $this->fetch_block($row['block_content']) : 'Can\'t find plugin block';
          break;
      }
      $parser->assign_vars(Array( 'TITLE'=>$this->tplWikiFormat($row['block_name']), 'CONTENT'=>$c ));
      if    ($row['sidebar_id'] == SIDEBAR_LEFT ) $left  .= $parser->run();
      elseif($row['sidebar_id'] == SIDEBAR_RIGHT) $right .= $parser->run();
      unset($parser);
    }
    $db->free_result();
    if(isset($vars['sidebar_bottom'])) 
    {
      $left  .= $this->parse($vars['sidebar_bottom']);
      $right .= $this->parse($vars['sidebar_bottom']);
    }
    $min = '';
    if(isset($vars['sidebar_top'])) 
    {
      $min .= $this->parse($vars['sidebar_top']);
    }
    if(isset($vars['sidebar_bottom']))
    {
      $min .= $this->parse($vars['sidebar_bottom']);
    }
    return Array($left, $right, $min);
  }
  
  function initLinksWidget()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    // SourceForge/W3C buttons
    $ob = Array();
    $admintitle = ( $session->user_level >= USER_LEVEL_ADMIN ) ? 'title="You may disable this button in the admin panel under General Configuration."' : '';
    if(getConfig('sflogo_enabled')=='1')
    {
      $ob[] = '<a style="text-align: center;" href="http://sourceforge.net/" onclick="if ( !KILL_SWITCH ) { window.open(this.href);return false; }"><img style="border-width: 0px;" alt="SourceForge.net Logo" src="http://sflogo.sourceforge.net/sflogo.php?group_id='.getConfig('sflogo_groupid').'&amp;type='.getConfig('sflogo_type').'" /></a>';
    }
    if(getConfig('w3c_v32')     =='1') $ob[] = '<a style="text-align: center;" href="http://validator.w3.org/check?uri=referer" onclick="if ( !KILL_SWITCH ) { window.open(this.href);return false; }"><img style="border: 0px solid #FFFFFF;" alt="Valid HTML 3.2"  src="http://www.w3.org/Icons/valid-html32" /></a>';
    if(getConfig('w3c_v40')     =='1') $ob[] = '<a style="text-align: center;" href="http://validator.w3.org/check?uri=referer" onclick="if ( !KILL_SWITCH ) { window.open(this.href);return false; }"><img style="border: 0px solid #FFFFFF;" alt="Valid HTML 4.0"  src="http://www.w3.org/Icons/valid-html40" /></a>';
    if(getConfig('w3c_v401')    =='1') $ob[] = '<a style="text-align: center;" href="http://validator.w3.org/check?uri=referer" onclick="if ( !KILL_SWITCH ) { window.open(this.href);return false; }"><img style="border: 0px solid #FFFFFF;" alt="Valid HTML 4.01" src="http://www.w3.org/Icons/valid-html401" /></a>';
    if(getConfig('w3c_vxhtml10')=='1') $ob[] = '<a style="text-align: center;" href="http://validator.w3.org/check?uri=referer" onclick="if ( !KILL_SWITCH ) { window.open(this.href);return false; }"><img style="border: 0px solid #FFFFFF;" alt="Valid XHTML 1.0" src="http://www.w3.org/Icons/valid-xhtml10" /></a>';
    if(getConfig('w3c_vxhtml11')=='1') $ob[] = '<a style="text-align: center;" href="http://validator.w3.org/check?uri=referer" onclick="if ( !KILL_SWITCH ) { window.open(this.href);return false; }"><img style="border: 0px solid #FFFFFF;" alt="Valid XHTML 1.1" src="http://www.w3.org/Icons/valid-xhtml11" /></a>';
    if(getConfig('w3c_vcss')    =='1') $ob[] = '<a style="text-align: center;" href="http://validator.w3.org/check?uri=referer" onclick="if ( !KILL_SWITCH ) { window.open(this.href);return false; }"><img style="border: 0px solid #FFFFFF;" alt="Valid CSS"       src="http://www.w3.org/Icons/valid-css" /></a>';
    if(getConfig('dbd_button')  =='1') $ob[] = '<a style="text-align: center;" href="http://www.defectivebydesign.org/join/button" onclick="if ( !KILL_SWITCH ) { window.open(this.href);return false; }"><img style="border: 0px solid #FFFFFF;" alt="DRM technology restricts what you can do with your computer" src="http://defectivebydesign.org/sites/nodrm.civicactions.net/files/images/dbd_sm_btn.gif" /><br /><small>Protect your freedom >></small></a>';
    
    $code = $plugins->setHook('links_widget');
    foreach ( $code as $cmd )
    {
      eval($cmd);
    }
    
    if(count($ob) > 0 || getConfig('powered_btn') == '1') $sb_links = '<div style="text-align: center; padding: 5px 0;">'. ( ( getConfig('powered_btn') == '1' ) ? $this->fading_button : '' ) . implode('<br />', $ob).'</div>';
    else $sb_links = '';
    
    $this->sidebar_widget('Links', $sb_links);
  }
  
  /**
   * Builds a box showing unread private messages.
   */
  
  function notify_unread_pms()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if ( ( $paths->cpage['urlname_nons'] == 'PrivateMessages' || $paths->cpage['urlname_nons'] == 'Preferences' ) && $paths->namespace == 'Special' )
    {
      return '';
    }
    $ob = '<div class="usermessage">'."\n";
    $s = ( $session->unread_pms == 1 ) ? '' : 's';
    $ob .= "  <b>You have $session->unread_pms <a href=" . '"' . makeUrlNS('Special', 'PrivateMessages' ) . '"' . ">unread private message$s</a>.</b><br />\n  Messages: ";
    $q = $db->sql_query('SELECT message_id,message_from,subject,date FROM '.table_prefix.'privmsgs WHERE message_to=\'' . $session->username . '\' AND message_read=0 ORDER BY date DESC;');
    if ( !$q )
      $db->_die();
    $messages = array();
    while ( $row = $db->fetchrow() )
    {
      $messages[] = '<a href="' . makeUrlNS('Special', 'PrivateMessages/View/' . $row['message_id']) . '" title="Sent ' . date('F d, Y h:i a', $row['date']) . ' by ' . $row['message_from'] . '">' . $row['subject'] . '</a>';
    }
    $ob .= implode(",\n    " , $messages)."\n";
    $ob .= '</div>'."\n";
    return $ob;
  }
  
} // class template

/**
 * Handles parsing of an individual template file. Instances should only be created through $template->makeParser(). To use:
 *   - Call $template->makeParser(template file name) - file name should be something.tpl, css/whatever.css, etc.
 *   - Make an array of strings you want the template to access. $array['STRING'] would be referenced in the template like {STRING}
 *   - Make an array of boolean values. These can be used for conditionals in the template (<!-- IF something --> whatever <!-- ENDIF something -->)
 *   - Call assign_vars() to pass the strings to the template parser. Same thing with assign_bool().
 *   - Call run() to parse the template and get your fully compiled HTML.
 * @access private
 */

class templateIndividual extends template {
  var $tpl_strings, $tpl_bool, $tpl_code;
  var $compiled = false;
  /**
   * Constructor.
   */
  function __construct($text)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    $this->tpl_code = $text;
    $this->tpl_strings = $template->tpl_strings;
    $this->tpl_bool = $template->tpl_bool;
  }
  /**
   * PHP 4 constructor.
   */
  function templateIndividual($text)
  {
    $this->__construct($text);
  }
  /**
   * Assigns an array of string values to the template. Strings can be accessed from the template by inserting {KEY_NAME} in the template file.
   * @param $vars array
   */
  function assign_vars($vars)
  {
    $this->tpl_strings = array_merge($this->tpl_strings, $vars);
  }
  /**
   * Assigns an array of boolean values to the template. These can be used for <!-- IF ... --> statements.
   * @param $vars array
   */
  function assign_bool($vars)
  {
    $this->tpl_bool = array_merge($this->tpl_bool, $vars);
  }
  /**
   * Compiles and executes the template code.
   * @return string
   */
  function run()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if(!$this->compiled)
    {
      $this->tpl_code = $this->compile_template_text($this->tpl_code);
      $this->compiled = true;
    }
    return eval($this->tpl_code);
  }
}

/**
 * A version of the template compiler that does not rely at all on the other parts of Enano. Used during installation and for showing
 * "critical error" messages. ** REQUIRES ** the Oxygen theme.
 */

class template_nodb {
  var $tpl_strings, $tpl_bool, $theme, $style, $no_headers, $additional_headers, $sidebar_extra, $sidebar_widgets, $toolbar_menu, $theme_list;
  function __construct() {
    
    $this->tpl_bool    = Array();
    $this->tpl_strings = Array();
    $this->sidebar_extra = '';
    $this->sidebar_widgets = '';
    $this->toolbar_menu = '';
    $this->additional_headers = '';
    
    $this->theme_list = Array(Array(
      'theme_id'=>'oxygen',
      'theme_name'=>'Oxygen',
      'theme_order'=>1,
      'enabled'=>1,
      ));
  }
  function template() {
    $this->__construct();
  }
  function get_css($s = false) {
    if($s)
      return $this->process_template('css/'.$s);
    else
      return $this->process_template('css/'.$this->style.'.css');
  }
  function load_theme($name, $css, $auto_init = true) {
    $this->theme = $name;
    $this->style = $css;
    
    $this->tpl_strings['SCRIPTPATH'] = scriptPath;
    if ( $auto_init )
      $this->init_vars();
  }
  function init_vars()
  {
    global $sideinfo;
    global $this_page;
    global $db, $session, $paths, $template, $plugins; // Common objects
    $tplvars = $this->extract_vars('elements.tpl');
    $tb = '';
    // Get the "article" button text (depends on namespace)
    if(defined('IN_ENANO_INSTALL')) $ns = 'installation page';
    else $ns = 'system error page';
    $t = str_replace('{FLAGS}', 'onclick="if ( !KILL_SWITCH ) { return false; }" title="Hey! A button that doesn\'t do anything. Clever..." accesskey="a"', $tplvars['toolbar_button']);
    $t = str_replace('{HREF}', '#', $t);
    $t = str_replace('{TEXT}', $ns, $t);
    $tb .= $t;
    
    // Page toolbar
    
    $this->tpl_bool = Array(
      'auth_admin'=>true,
      'user_logged_in'=>true,
      'right_sidebar'=>false,
      );
    $this->tpl_bool['in_sidebar_admin'] = false;
    
    $this->tpl_bool['auth_rename'] = false;
    
    $asq = $asa = '';
    
    $this->tpl_bool['fixed_menus'] = false;
    $slink = defined('IN_ENANO_INSTALL') ? scriptPath.'/install.php?mode=css' : makeUrlNS('Special', 'CSS');
    
    $title = ( is_object($paths) ) ? $paths->page : 'Critical error';
    
    // The rewritten template engine will process all required vars during the load_template stage instead of (cough) re-processing everything each time around.
    $tpl_strings = Array(
      'PAGE_NAME'=>$this_page,
      'PAGE_URLNAME'=>'Null',
      'SITE_NAME'=>'Enano Installation',
      'USERNAME'=>'admin',
      'SITE_DESC'=>'Install Enano on your server.',
      'TOOLBAR'=>$tb,
      'SCRIPTPATH'=>scriptPath,
      'CONTENTPATH'=>contentPath,
      'ADMIN_SID_QUES'=>$asq,
      'ADMIN_SID_AMP'=>$asa,
      'ADMIN_SID_AMP_HTML'=>'',
      'ADDITIONAL_HEADERS'=>'<style type="text/css">div.pagenav { border-top: 1px solid #CCC; padding-top: 7px; margin-top: 10px; }</style>',
      'SIDEBAR_EXTRA'=>'',
      'COPYRIGHT'=>'Enano and all of its code, graphics, and more code is copyright &copy; 2006 Dan Fuhry.<br />This program is Free Software; see the file "GPL" included with this package for details.',
      'TOOLBAR_EXTRAS'=>'',
      'REQUEST_URI'=>( isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '' ).$_SERVER['REQUEST_URI'],
      'STYLE_LINK'=>$slink,
      'LOGOUT_LINK'=>'',
      'THEME_LINK'=>'',
      'TEMPLATE_DIR'=>scriptPath.'/themes/'.$this->theme,
      'THEME_ID'=>$this->theme,
      'STYLE_ID'=>$this->style,
      'JS_DYNAMIC_VARS'=>'<script type="text/javascript">var title="'. $title .'"; var scriptPath="'.scriptPath.'"; var ENANO_SID=""; var AES_BITS='.AES_BITS.'; var AES_BLOCKSIZE=' . AES_BLOCKSIZE . '; var pagepass=\'\';</script>',
      'SIDEBAR_RIGHT'=>'',
      );
    $this->tpl_strings = array_merge($tpl_strings, $this->tpl_strings);
    
    $sidebar = ( gettype($sideinfo) == 'string' ) ? $sideinfo : '';
    if($sidebar != '')
    {
      if(isset($tplvars['sidebar_top']))
      {
        $text = $this->makeParserText($tplvars['sidebar_top']);
        $top = $text->run();
      } else {
        $top = '';
      }
      $p = $this->makeParserText($tplvars['sidebar_section']);
      $p->assign_vars(Array(
          'TITLE'=>'Installation progress',
          'CONTENT'=>$sidebar,
        ));
      $sidebar = $p->run();
      if(isset($tplvars['sidebar_bottom']))
      {
        $text = $this->makeParserText($tplvars['sidebar_bottom']);
        $bottom = $text->run();
      } else {
        $bottom = '';
      }
      $sidebar = $top . $sidebar . $bottom;
    }
    $this->tpl_strings['SIDEBAR_LEFT'] = $sidebar;
    
    $this->tpl_bool['sidebar_left']  = ( $this->tpl_strings['SIDEBAR_LEFT']  != '') ? true : false;
    $this->tpl_bool['sidebar_right'] = ( $this->tpl_strings['SIDEBAR_RIGHT'] != '') ? true : false;
    $this->tpl_bool['right_sidebar'] = $this->tpl_bool['sidebar_right']; // backward compatibility
    $this->tpl_bool['stupid_mode'] = true;
  }
  function header() 
  {
    if(!$this->no_headers) echo $this->process_template('header.tpl');
  }
  function footer()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if(!$this->no_headers) {
      global $_starttime;
      
      $f = microtime(true);
      $f = $f - $_starttime;
      $f = round($f, 4);
      if(defined('IN_ENANO_INSTALL')) $nq = 'N/A';
      else $nq = $db->num_queries;
      if($nq == 0) $nq = 'N/A';
      $dbg = 'Time: '.$f.'s  |  Queries: '.$nq;
      $t = $this->process_template('footer.tpl');
      $t = str_replace('[[Stats]]', $dbg, $t);
      if ( is_object($db) )
      {
        $t = str_replace('[[NumQueries]]', (string)$db->num_queries, $t);
      }
      else
      {
        $t = str_replace('[[NumQueries]]', '0', $t);
      }
      $t = str_replace('[[GenTime]]', (string)$f, $t);
      
      echo $t;
    }
    else return '';
  }
  function getHeader()
  {
    if(!$this->no_headers) return $this->process_template('header.tpl');
    else return '';
  }
  function getFooter()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if(!$this->no_headers) {
      global $_starttime;
      $f = microtime(true);
      $f = $f - $_starttime;
      $f = round($f, 4);
      if(defined('IN_ENANO_INSTALL')) $nq = 'N/A';
      else $nq = $db->num_queries;
      if($nq == 0) $nq = 'N/A';
      $dbg = 'Time: '.$f.'s  |  Queries: '.$nq;
      if($nq == 0) $nq = 'N/A';
      $t = $this->process_template('footer.tpl');
      $t = str_replace('[[Stats]]', $dbg, $t);
      return $t;
    }
    else return '';
  }
  
  function process_template($file) {
    
    eval($this->compile_template($file));
    return $tpl_code;
  }
  
  function extract_vars($file) {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if(!is_file(ENANO_ROOT . '/themes/'.$this->theme.'/'.$file)) die('Cannot find '.$file.' file for style "'.$this->theme.'", exiting');
    $text = file_get_contents(ENANO_ROOT . '/themes/'.$this->theme.'/'.$file);
    preg_match_all('#<\!-- VAR ([A-z0-9_-]*) -->(.*?)<\!-- ENDVAR \\1 -->#is', $text, $matches);
    $tplvars = Array();
    for($i=0;$i<sizeof($matches[1]);$i++)
    {
      $tplvars[$matches[1][$i]] = $matches[2][$i];
    }
    return $tplvars;
  }
  function compile_template($text) {
    global $sideinfo;
    $text = file_get_contents(ENANO_ROOT . '/themes/'.$this->theme.'/'.$text);
    $text = str_replace('<script type="text/javascript" src="{SCRIPTPATH}/ajax.php?title={PAGE_URLNAME}&amp;_mode=jsres"></script>', '', $text); // Remove the AJAX code - we don't need it, and it requires a database connection
    $text = '$tpl_code = \''.str_replace('\'', '\\\'', $text).'\'; return $tpl_code;';
    $text = preg_replace('#<!-- BEGIN (.*?) -->#is', '\'; if($this->tpl_bool[\'\\1\']) { $tpl_code .= \'', $text);
    $text = preg_replace('#<!-- IFPLUGIN (.*?) -->#is', '\'; if(getConfig(\'plugin_\\1\')==\'1\') { $tpl_code .= \'', $text);
    if(defined('IN_ENANO_INSTALL')) $text = str_replace('<!-- SYSMSG Sidebar -->', '<div class="slider"><div class="heading"><a class="head">Installation progress</a></div><div class="slideblock">'.$sideinfo.'</div></div>', $text);
    else $text = str_replace('<!-- SYSMSG Sidebar -->', '<div class="slider"><div class="heading"><a class="head">System error</a></div><div class="slideblock"><a href="#" onclick="return false;">Enano critical error page</a></div></div>', $text);
    $text = preg_replace('#<!-- SYSMSG (.*?) -->#is', '', $text);
    $text = preg_replace('#<!-- BEGINNOT (.*?) -->#is', '\'; if(!$this->tpl_bool[\'\\1\']) { $tpl_code .= \'', $text);
    $text = preg_replace('#<!-- BEGINELSE (.*?) -->#is', '\'; } else { $tpl_code .= \'', $text);
    $text = preg_replace('#<!-- END (.*?) -->#is', '\'; } $tpl_code .= \'', $text);
    $text = preg_replace('#{([A-z0-9]*)}#is', '\'.$this->tpl_strings[\'\\1\'].\'', $text);
    return $text; //('<pre>'.htmlspecialchars($text).'</pre>');
  }
  
  function compile_template_text($text) {
    global $sideinfo;
    $text = str_replace('<script type="text/javascript" src="{SCRIPTPATH}/ajax.php?title={PAGE_URLNAME}&amp;_mode=jsres"></script>', '', $text); // Remove the AJAX code - we don't need it, and it requires a database connection
    $text = '$tpl_code = \''.str_replace('\'', '\\\'', $text).'\'; return $tpl_code;';
    $text = preg_replace('#<!-- BEGIN (.*?) -->#is', '\'; if($this->tpl_bool[\'\\1\']) { $tpl_code .= \'', $text);
    $text = preg_replace('#<!-- IFPLUGIN (.*?) -->#is', '\'; if(getConfig(\'plugin_\\1\')==\'1\') { $tpl_code .= \'', $text);
    if(defined('IN_ENANO_INSTALL')) $text = str_replace('<!-- SYSMSG Sidebar -->', '<div class="slider"><div class="heading"><a class="head">Installation progress</a></div><div class="slideblock">'.$sideinfo.'</div></div>', $text);
    else $text = str_replace('<!-- SYSMSG Sidebar -->', '<div class="slider"><div class="heading"><a class="head">System error</a></div><div class="slideblock"><a href="#" onclick="return false;>Enano critical error page</a></div></div>', $text);
    $text = preg_replace('#<!-- SYSMSG (.*?) -->#is', '', $text);
    $text = preg_replace('#<!-- BEGINNOT (.*?) -->#is', '\'; if(!$this->tpl_bool[\'\\1\']) { $tpl_code .= \'', $text);
    $text = preg_replace('#<!-- BEGINELSE (.*?) -->#is', '\'; } else { $tpl_code .= \'', $text);
    $text = preg_replace('#<!-- END (.*?) -->#is', '\'; } $tpl_code .= \'', $text);
    $text = preg_replace('#{([A-z0-9]*)}#is', '\'.$this->tpl_strings[\'\\1\'].\'', $text);
    return $text; //('<pre>'.htmlspecialchars($text).'</pre>');
  }
  
  /**
   * Allows individual parsing of template files. Similar to phpBB but follows the spirit of object-oriented programming ;)
   * Returns on object of class templateIndividual. Usage instructions can be found in the inline docs for that class.
   * @param $filename the filename of the template to be parsed
   * @return object
   */
   
  function makeParser($filename)
  {
    $filename = ENANO_ROOT.'/themes/'.$this->theme.'/'.$filename;
    if(!file_exists($filename)) die('templateIndividual: file '.$filename.' does not exist');
    $code = file_get_contents($filename);
    $parser = new templateIndividualSafe($code, $this);
    return $parser;
  }
  
  /**
   * Same as $template->makeParser(), but takes a string instead of a filename.
   * @param $text the text to parse
   * @return object
   */
   
  function makeParserText($code)
  {
    $parser = new templateIndividualSafe($code, $this);
    return $parser;
  }
   
} // class template_nodb

/**
 * Identical to templateIndividual, except extends template_nodb instead of template
 * @see class template
 */
 
class templateIndividualSafe extends template_nodb {
  var $tpl_strings, $tpl_bool, $tpl_code;
  var $compiled = false;
  /**
   * Constructor.
   */
  function __construct($text, $parent)
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    $this->tpl_code = $text;
    $this->tpl_strings = $parent->tpl_strings;
    $this->tpl_bool = $parent->tpl_bool;
  }
  /**
   * PHP 4 constructor.
   */
  function templateIndividual($text)
  {
    $this->__construct($text);
  }
  /**
   * Assigns an array of string values to the template. Strings can be accessed from the template by inserting {KEY_NAME} in the template file.
   * @param $vars array
   */
  function assign_vars($vars)
  {
    if(is_array($this->tpl_strings))
      $this->tpl_strings = array_merge($this->tpl_strings, $vars);
    else
      $this->tpl_strings = $vars;
  }
  /**
   * Assigns an array of boolean values to the template. These can be used for <!-- IF ... --> statements.
   * @param $vars array
   */
  function assign_bool($vars)
  {
    $this->tpl_bool = array_merge($this->tpl_bool, $vars);
  }
  /**
   * Compiles and executes the template code.
   * @return string
   */
  function run()
  {
    global $db, $session, $paths, $template, $plugins; // Common objects
    if(!$this->compiled)
    {
      $this->tpl_code = $this->compile_template_text($this->tpl_code);
      $this->compiled = true;
    }
    return eval($this->tpl_code);
  }
}

?>