includes/common.php
author Dan
Sat, 25 Aug 2007 12:11:31 -0400
changeset 98 6457a9b983c6
parent 80 cb7dde69c301
child 99 2332ebd75f61
permissions -rw-r--r--
Fixed non-object reference in databaseless template, added locking for Javascript paginator, made comments on AES key size more clear in constants, and disallowed "anonymous" and IP addresses for admin username in install.php; Loch Ness release candidate
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<?php
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/*
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 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
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 * Version 1.0.1 (Loch Ness)
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 * Copyright (C) 2006-2007 Dan Fuhry
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 *
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 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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 */
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if(isset($_REQUEST['GLOBALS']))
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{
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  ?>
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  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><html><head><title>Hacking Attempt</title><meta http-equiv="Content-type" content="text/html; charset=utf-8" /></head><style type="text/css">body{background-color:#000;color:#CCC;font-family:trebuchet ms,sans-serif;font-size:9pt;}a{color:#FFF;}</style><body><p>Hacking attempt using <a href="http://www.hardened-php.net/index.76.html">PHP $GLOBALS overwrite vulnerability</a> detected, reported to admin</p><p>You're worse than this guy! Unless you are this guy...</p><p id="billp"><img alt=" " src="about:blank" id="billi" /></p><script type="text/javascript">// <![CDATA[
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  window.onload=function(){counter();setInterval('counter();', 1000);};var text=false;var cnt=10;function counter(){if(!text){text=document.createElement('span');text.id='billc';text.innerHTML=cnt;text.style.fontSize='96pt';text.style.color='#FF0000';p=document.getElementById('billp');p.appendChild(text);}else{if(cnt==1){document.getElementById('billi').src='http://upload.wikimedia.org/wikipedia/commons/7/7f/Bill_Gates_2004_cr.jpg';document.getElementById('billc').innerHTML='';return;}cnt--;document.getElementById('billc').innerHTML=cnt+' ';}}
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  // ]]>
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  </script><p><span style="color:black;">You been f***ed by Enano | valid XHTML 1.1</span></p></body></html>
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  <?php
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  exit;
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}
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$version = '1.0.1';
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function microtime_float()
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{
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  list($usec, $sec) = explode(" ", microtime());
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  return ((float)$usec + (float)$sec);
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}
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global $_starttime;
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$_starttime = microtime_float();
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error_reporting(E_ALL);
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// Determine directory (special case for development servers)
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if ( strpos(__FILE__, '/repo/') && ( file_exists('.enanodev') || file_exists('../.enanodev') ) )
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{
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  $filename = str_replace('/repo/', '/', __FILE__);
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}
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else
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{
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  $filename = __FILE__;
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}
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if(!defined('ENANO_ROOT')) // ENANO_ROOT is sometimes defined by plugins like AjIM that need the constant before the Enano API is initialized
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  define('ENANO_ROOT', dirname(dirname($filename)));
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if(defined('ENANO_DEBUG') && version_compare(PHP_VERSION, '5.0.0') < 0)
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{
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  die(__FILE__.':'.__LINE__.': The debugConsole requires PHP 5.x.x or greater. Please comment out the ENANO_DEBUG constant in your index.php.');
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}
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if(defined('ENANO_DEBUG'))
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{
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  require_once(ENANO_ROOT.'/includes/debugger/debugConsole.php');
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} else {
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  function dc_here($m)     { return false; }
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  function dc_dump($a, $g) { return false; }
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  function dc_watch($n)    { return false; }
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  function dc_start_timer($u) { return false; }
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  function dc_stop_timer($m) { return false; }
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}
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if ( file_exists( ENANO_ROOT . '/_nightly.php') )
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  require(ENANO_ROOT.'/_nightly.php');
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// Start including files. LOTS of files. Yeah!
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require_once(ENANO_ROOT.'/includes/constants.php');
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dc_here('Enano CMS '.$version.' (dev) - debug window<br />Powered by debugConsole');
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dc_here('common: including files');
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require_once(ENANO_ROOT.'/includes/functions.php');
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require_once(ENANO_ROOT.'/includes/dbal.php');
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require_once(ENANO_ROOT.'/includes/paths.php');
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require_once(ENANO_ROOT.'/includes/sessions.php');
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require_once(ENANO_ROOT.'/includes/template.php');
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require_once(ENANO_ROOT.'/includes/plugins.php');
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require_once(ENANO_ROOT.'/includes/comment.php');
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require_once(ENANO_ROOT.'/includes/wikiformat.php');
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require_once(ENANO_ROOT.'/includes/diff.php');
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require_once(ENANO_ROOT.'/includes/render.php');
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require_once(ENANO_ROOT.'/includes/stats.php');
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require_once(ENANO_ROOT.'/includes/pageutils.php');
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require_once(ENANO_ROOT.'/includes/js-compressor.php');
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require_once(ENANO_ROOT.'/includes/rijndael.php');
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require_once(ENANO_ROOT.'/includes/email.php');
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require_once(ENANO_ROOT.'/includes/search.php');
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require_once(ENANO_ROOT.'/includes/json.php');
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require_once(ENANO_ROOT.'/includes/wikiengine/Tables.php');
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require_once(ENANO_ROOT.'/includes/pageprocess.php');
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require_once(ENANO_ROOT.'/includes/tagcloud.php');
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strip_magic_quotes_gpc();
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// Enano has five parts: the database abstraction layer (DBAL), the session manager, the path/URL manager, the template engine, and the plugin manager.
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// Each part has its own class and a global var; nearly all Enano functions are handled by one of these five components.
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global $db, $session, $paths, $template, $plugins; // Common objects
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global $enano_config; // A global used to cache config information without making loads of queries ;-)
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                      // In addition, $enano_config is used to fetch config information if die_semicritical() is called.
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global $email;
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if(!isset($_SERVER['HTTP_HOST'])) grinding_halt('Cannot get hostname', '<p>Your web browser did not provide the HTTP Host: field. This site requires a modern browser that supports the HTTP 1.1 standard.</p>');
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$db = new mysql();
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dc_here('common: calling $db->connect();');
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$db->connect(); // Redirects to install.php if an installation is not detected
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if(strstr(contentPath, '?')) $sep = '&';
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else $sep = '?';
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define('urlSeparator', $sep);
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unset($sep); // save 10 bytes of memory...
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// See if any diagnostic actions have been requested
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if ( isset($_GET['do']) && $_GET['do'] == 'diag' && isset($_GET['sub']) )
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{
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  switch($_GET['sub'])
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  {
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    case 'cookie_destroy':
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      unset($_COOKIE['sid']);
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      setcookie('sid', '', time()-3600*24, scriptPath);
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      setcookie('sid', '', time()-3600*24, scriptPath.'/');
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      die('Session cookie cleared. <a href="'.$_SERVER['PHP_SELF'].'">Continue</a>');
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      break;
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  }
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}
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// Select and fetch the site configuration
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dc_here('common: selecting global config data');
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$e = $db->sql_query('SELECT config_name, config_value FROM '.table_prefix.'config;');
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if(!$e) $db->_die('Some critical configuration information could not be selected.');
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else define('ENANO_CONFIG_FETCHED', ''); // Used in die_semicritical to figure out whether to call getConfig() or not
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dc_here('common: fetching $enano_config');
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$enano_config = Array();
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while($r = $db->fetchrow())
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{
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  $enano_config[$r['config_name']] = $r['config_value'];
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}
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$db->free_result();
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if(enano_version(false, true) != $version)
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{
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  grinding_halt('Version mismatch', '<p>It seems that the Enano release we\'re trying to run ('.$version.') is different from the version specified in your database ('.enano_version().'). Perhaps you need to <a href="'.scriptPath.'/upgrade.php">upgrade</a>?</p>');
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}
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// Our list of tables included in Enano
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$system_table_list = Array(
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    table_prefix.'categories',
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    table_prefix.'comments',
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    table_prefix.'config',
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    table_prefix.'logs',
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    table_prefix.'page_text',
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    table_prefix.'session_keys',
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    table_prefix.'pages',
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    table_prefix.'users',
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    table_prefix.'users_extra',
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    table_prefix.'themes',
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    table_prefix.'buddies',
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    table_prefix.'banlist',
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    table_prefix.'files',
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    table_prefix.'privmsgs',
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    table_prefix.'sidebar',
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    table_prefix.'hits',
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    table_prefix.'search_index',
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    table_prefix.'groups',
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    table_prefix.'group_members',
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    table_prefix.'acl',
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    table_prefix.'search_cache',
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    table_prefix.'page_groups',
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    table_prefix.'page_group_members',
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    table_prefix.'tags'
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  );
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dc_here('common: initializing base classes');
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$plugins = new pluginLoader();
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// So where does the majority of Enano get executed? How about the next nine lines of code :)
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dc_here('common: ok, we\'re set up, starting mainstream execution');
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$plugins->loadAll();
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dc_here('common: loading plugins');
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  global $plugins;
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  foreach($plugins->load_list as $f) { include_once $f; } // Can't be in object context when this is done
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$session = new sessionManager();
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$paths = new pathManager();
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$template = new template();
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$email = new EmailEncryptor();
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define('ENANO_BASE_CLASSES_INITIALIZED', '');
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if ( !defined('IN_ENANO_INSTALL') )
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{
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  $code = $plugins->setHook('base_classes_initted');
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  foreach ( $code as $cmd )
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  {
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    eval($cmd);
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  }
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  $p = RenderMan::strToPageId($paths->get_pageid_from_url());
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  if( ( $p[1] == 'Admin' || $p[1] == 'Special' ) && function_exists('page_'.$p[1].'_'.$p[0].'_preloader'))
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  {
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    @call_user_func('page_'.$p[1].'_'.$p[0].'_preloader');
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  }
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  $session->start();
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  $paths->init();
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  define('ENANO_MAINSTREAM', '');
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  // If the site is disabled, bail out, unless we're trying to log in or administer the site
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  if(getConfig('site_disabled') == '1' && $session->user_level < USER_LEVEL_ADMIN)
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  {
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    if ( $paths->namespace == 'Admin' || ( $paths->namespace == 'Special' && ( $paths->cpage['urlname_nons'] == 'CSS' || $paths->cpage['urlname_nons'] == 'Administration' || $paths->cpage['urlname_nons'] == 'Login' ) ) )
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    {
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      // do nothing; allow execution to continue
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    }
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    else
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    {
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      if(!$n = getConfig('site_disabled_notice')) 
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      {
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        $n = 'The administrator has disabled the site. Please check back later.';
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      }
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      $text = RenderMan::render($n) . '
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      <div class="info-box">
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        If you have an administrative account, you may <a href="'.makeUrlNS('Special', 'Login').'">log in</a> to the site or <a href="'.makeUrlNS('Special', 'Administration').'">use the administration panel</a>.
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      </div>';
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      $paths->wiki_mode = 0;
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      die_semicritical('Site disabled', $text);
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    }
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  }
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  else if(getConfig('site_disabled') == '1' && $session->user_level >= USER_LEVEL_ADMIN)
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  {
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    $template->site_disabled = true;
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  }
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  $code = $plugins->setHook('session_started');
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  foreach ( $code as $cmd )
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  {
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    eval($cmd);
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  }
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  if(isset($_GET['noheaders'])) $template->no_headers = true;
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}
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?>