<?php
/**
 *
 * @category        frontend
 * @package         framework
 * @author          Ryan Djurovich,WebsiteBaker Project
 * @copyright       2009-2013, WebsiteBaker Org. e.V.
 * @link            http://www.websitebaker.org/
 * @license         http://www.gnu.org/licenses/gpl.html
 * @platform        WebsiteBaker 2.8.4
 * @requirements    PHP 5.2.2 and higher
 * @version         $Id: functions.php 2070 2014-01-03 01:21:42Z darkviper $
 * @filesource      $HeadURL: svn://isteam.dynxs.de/wb-archiv/branches/2.8.x/wb/framework/functions.php $
 * @lastmodified    $Date: 2014-01-03 02:21:42 +0100 (Fri, 03 Jan 2014) $
 *
 */
/* -------------------------------------------------------- */
// Must include code to stop this file being accessed directly
if(!defined('WB_PATH')) {
	require_once(dirname(__FILE__).'/globalExceptionHandler.php');
	throw new IllegalFileException();
}
/* -------------------------------------------------------- */
// Define that this file has been loaded
define('FUNCTIONS_FILE_LOADED', true);


/**
 * Delete an Accessfiles Tree
 * @param  string  $sDirToDelete
 * @param  array   &$aReport  returns report if set
 * @return boolean true/false
 * @description    Delete all accessfiles and its depending directory tree 
 *                 inside the given directory.
 */
function DeleteAccessFilesTree($sDirToDelete, array &$aReport = null)
{
	$aReport = array();
	$sBaseDir = realpath($sDirToDelete);
	if( $sBaseDir !== false) {
		$sBaseDir = rtrim(str_replace('\\', '/', $sBaseDir), '/') . '/';
		// scan start directory for access files
		foreach (glob($sBaseDir . '*.php', GLOB_MARK) as $sItem) {
            $sItem = str_replace('\\', '/', $sItem);
			try{
				$oAccFile = new AccessFile($sBaseDir, basename($sItem));
				$oAccFile->delete();
				$aReport = array_merge($aReport, AccessFileHelper::getDelTreeLog());
			}catch(AccessFileIsNoAccessfileException $e) {
				continue;
			}
		}
		clearstatcache();
		return true;
	}	
	return false;
}

/**
 * @description: recursively delete a non empty directory
 * @param string $directory :
 * @param bool $empty : true if you want the folder just emptied, but not deleted
 *                      false, or just simply leave it out, the given directory will be deleted, as well
 * @param array $aProtectedFiles optional list of protected files, full path needed
 * @return boolean: true/false
 * @from http://www.php.net/manual/de/function.rmdir.php#98499
 */
function rm_full_dir($directory, $empty = false, $aProtectedFiles = null)
{
	$directory = rtrim(str_replace('\\','/',$directory),'/');
	if($aProtectedFiles == null) {
		$aProtectedFiles = array();
	}
    $iErrorReporting = error_reporting(0);

    if (is_file( $directory )&& is_writable( $directory )) {
		if(!in_array(($directory), $aProtectedFiles)) {
			$retval = unlink($directory);
			clearstatcache();
			error_reporting($iErrorReporting);
			return $retval;
		}else {
			return true;
		}
    }
    if(!is_writable($directory) || !is_dir($directory)) {
        error_reporting($iErrorReporting);
        return false;
    } elseif(!is_readable($directory)) {
        error_reporting($iErrorReporting);
        return false;
    } else {
        $directoryHandle = opendir($directory);
        while ($contents = readdir($directoryHandle))
		{
            if($contents != '.' && $contents != '..')
			{
                $path = $directory . "/" . $contents;
                if(is_dir($path)) {
                    rm_full_dir($path, false, $aProtectedFiles);
                } else {
					if(!in_array($path, $aProtectedFiles)) {
				        unlink($path);
						clearstatcache();
					}
                }
            }
        }
        closedir($directoryHandle);
        if($empty == false) {
            if(is_dir($directory) && is_writable(dirname($directory))) {
                $retval = rmdir($directory);
                error_reporting($iErrorReporting);
                return $retval;
            } else {
                error_reporting($iErrorReporting);
				return false;
            }
        }
        error_reporting($iErrorReporting);
        return true;
    }
}

/*
 * returns a recursive list of all subdirectories from a given directory
 * @access  public
 * @param   string  $directory: from this dir the recursion will start
 * @param   bool    $show_hidden:  if set to TRUE also hidden dirs (.dir) will be shown
 * @return  array
 * example:
 *  /srv/www/httpdocs/wb/media/a/b/c/
 *  /srv/www/httpdocs/wb/media/a/b/d/
 * directory_list('/srv/www/httpdocs/wb/media/') will return:
 *  /a
 *  /a/b
 *  /a/b/c
 *  /a/b/d
 */
 function directory_list($directory, $show_hidden = false)
{
	$result_list = array();
	if (is_dir($directory))
    {
    	$dir = dir($directory); // Open the directory
    	while (false !== $entry = $dir->read()) // loop through the directory
		{
			if($entry == '.' || $entry == '..') { continue; } // Skip pointers
			if($entry[0] == '.' && $show_hidden == false) { continue; } // Skip hidden files
    		if (is_dir("$directory/$entry")) { // Add dir and contents to list
    			$result_list = array_merge($result_list, directory_list("$directory/$entry"));
    			$result_list[] = "$directory/$entry";
    		}
    	}
        $dir->close();
    }
	// sorting
	if(natcasesort($result_list)) {
		// new indexing
		$result_list = array_merge($result_list);
	}
	return $result_list; // Now return the list
}

// Function to open a directory and add to a dir list
function chmod_directory_contents($directory, $file_mode)
{
	if (is_dir($directory))
    {
    	// Set the umask to 0
    	$umask = umask(0);
    	// Open the directory then loop through its contents
    	$dir = dir($directory);
    	while (false !== $entry = $dir->read())
		{
    		// Skip pointers
    		if($entry[0] == '.') { continue; }
    		// Chmod the sub-dirs contents
    		if(is_dir("$directory/$entry")) {
    			chmod_directory_contents($directory.'/'.$entry, $file_mode);
    		}
    		change_mode($directory.'/'.$entry);
    	}
        $dir->close();
    	// Restore the umask
    	umask($umask);
    }
}

/**
* Scan a given directory for dirs and files.
*
* usage: scan_current_dir ($root = '' )
*
* @param     $root   set a absolute rootpath as string. if root is empty the current path will be scan
* @param     $search set a search pattern for files, empty search brings all files
* @access    public
* @return    array    returns a natsort array with keys 'path' and 'filename'
*
*/
if(!function_exists('scan_current_dir'))
{
	function scan_current_dir($root = '', $search = '/.*/')
	{
	    $FILE = array();
		$array = array();
	    clearstatcache();
	    $root = empty ($root) ? getcwd() : $root;
	    if (($handle = opendir($root)))
	    {
	    // Loop through the files and dirs an add to list  DIRECTORY_SEPARATOR
	        while (false !== ($file = readdir($handle)))
	        {
	            if (substr($file, 0, 1) != '.' && $file != 'index.php')
	            {
	                if (is_dir($root.'/'.$file)) {
	                    $FILE['path'][] = $file;
	                } elseif (preg_match($search, $file, $array) ) {
	                    $FILE['filename'][] = $array[0];
	                }
	            }
	        }
	        $close_verz = closedir($handle);
	    }
		// sorting
	    if (isset ($FILE['path']) && natcasesort($FILE['path'])) {
			// new indexing
	        $FILE['path'] = array_merge($FILE['path']);
	    }
		// sorting
	    if (isset ($FILE['filename']) && natcasesort($FILE['filename'])) {
			// new indexing
	        $FILE['filename'] = array_merge($FILE['filename']);
	    }
	    return $FILE;
	}
}

// Function to open a directory and add to a file list
function file_list($directory, $skip = array(), $show_hidden = false)
{
	$result_list = array();
	if (is_dir($directory))
    {
    	$dir = dir($directory); // Open the directory
		while (false !== ($entry = $dir->read())) // loop through the directory
		{
			if($entry == '.' || $entry == '..') { continue; } // Skip pointers
			if($entry[0] == '.' && $show_hidden == false) { continue; } // Skip hidden files
			if( sizeof($skip) > 0 && in_array($entry, $skip) ) { continue; } // Check if we to skip anything else
			if(is_file( $directory.'/'.$entry)) { // Add files to list
				$result_list[] = $directory.'/'.$entry;
			}
		}
		$dir->close(); // Now close the folder object
	}

    // make the list nice. Not all OS do this itself
	if(natcasesort($result_list)) {
		$result_list = array_merge($result_list);
	}
	return $result_list;
}

function remove_home_subs($directory = '/', $home_folders = '')
{
	if( ($handle = opendir(WB_PATH.MEDIA_DIRECTORY.$directory)) )
	{
		// Loop through the dirs to check the home folders sub-dirs are not shown
		while(false !== ($file = readdir($handle)))
		{
			if($file[0] != '.' && $file != 'index.php')
			{
				if(is_dir(WB_PATH.MEDIA_DIRECTORY.$directory.'/'.$file))
				{
					if($directory != '/') {
						$file = $directory.'/'.$file;
					}else {
						$file = '/'.$file;
					}
					foreach($home_folders AS $hf)
					{
						$hf_length = strlen($hf);
						if($hf_length > 0) {
							if(substr($file, 0, $hf_length+1) == $hf) {
								$home_folders[$file] = $file;
							}
						}
					}
					$home_folders = remove_home_subs($file, $home_folders);
				}
			}
		}
	}
	return $home_folders;
}

// Function to get a list of home folders not to show
function get_home_folders()
{
	global $database, $admin;
	$home_folders = array();
	// Only return home folders is this feature is enabled
	// and user is not admin
//	if(HOME_FOLDERS AND ($_SESSION['GROUP_ID']!='1')) {
	if(HOME_FOLDERS AND (!in_array('1',explode(',', $_SESSION['GROUPS_ID']))))
	{
		$sql  = 'SELECT `home_folder` FROM `'.TABLE_PREFIX.'users` ';
		$sql .= 'WHERE `home_folder`!=\''.$admin->get_home_folder().'\'';
		$query_home_folders = $database->query($sql);
		if($query_home_folders->numRows() > 0)
		{
			while($folder = $query_home_folders->fetchRow()) {
				$home_folders[$folder['home_folder']] = $folder['home_folder'];
			}
		}
		$home_folders = remove_home_subs('/', $home_folders);
	}
	return $home_folders;
}

/*
 * @param object &$wb: $wb from frontend or $admin from backend
 * @return array: list of new entries
 * @description: callback remove path in files/dirs stored in array
 * @example: array_walk($array,'remove_path',PATH);
 */
//
function remove_path(&$path, $key, $vars = '')
{
	$path = str_replace($vars, '', $path);
}
/*
 * @param object &$wb: $wb from frontend or $admin from backend
 * @return array: list of ro-dirs
 * @description: returns a list of directories beyound /wb/media which are ReadOnly for current user
 */
function media_dirs_ro( &$wb )
{
	global $database;
	// if user is admin or home-folders not activated then there are no restrictions
	$allow_list = array();
	if( $wb->get_user_id() == 1 || !HOME_FOLDERS ) {
		return array();
	}
	// at first read any dir and subdir from /media
	$full_list = directory_list( WB_PATH.MEDIA_DIRECTORY );
	// add own home_folder to allow-list
	if( $wb->get_home_folder() ) {
		// old: $allow_list[] = get_home_folder();
		$allow_list[] = $wb->get_home_folder();
	}
	// get groups of current user
	$curr_groups = $wb->get_groups_id();
	// if current user is in admin-group
	if( ($admin_key = array_search('1', $curr_groups)) !== false)
	{
		// remove admin-group from list
		unset($curr_groups[$admin_key]);
		// search for all users where the current user is admin from
		foreach( $curr_groups as $group)
		{
			$sql  = 'SELECT `home_folder` FROM `'.TABLE_PREFIX.'users` ';
			$sql .= 'WHERE (FIND_IN_SET(\''.$group.'\', `groups_id`) > 0) AND `home_folder` <> \'\' AND `user_id` <> '.$wb->get_user_id();
			if( ($res_hf = $database->query($sql)) != null ) {
				while( $rec_hf = $res_hf->fetchrow() ) {
					$allow_list[] = $rec_hf['home_folder'];
				}
			}
		}
	}
	$tmp_array = $full_list;
	// create a list for readonly dir
    $array = array();
	while( sizeof($tmp_array) > 0)
	{
        $tmp = array_shift($tmp_array);
        $x = 0;
		while($x < sizeof($allow_list)) {
			if(strpos ($tmp,$allow_list[$x])) {
				$array[] = $tmp;
			}
			$x++;
		}
	}
	$full_list = array_diff( $full_list, $array );
	$tmp = array();
	$full_list = array_merge($tmp,$full_list);
	return $full_list;
}

/*
 * @param object &$wb: $wb from frontend or $admin from backend
 * @return array: list of rw-dirs
 * @description: returns a list of directories beyound /wb/media which are ReadWrite for current user
 */
function media_dirs_rw ( &$wb )
{
	global $database;
	// if user is admin or home-folders not activated then there are no restrictions
	// at first read any dir and subdir from /media
	$full_list = directory_list( WB_PATH.MEDIA_DIRECTORY );
    $array = array();
	$allow_list = array();
	if( ($wb->ami_group_member('1')) && !HOME_FOLDERS ) {
		return $full_list;
	}
	// add own home_folder to allow-list
	if( $wb->get_home_folder() ) {
	  	$allow_list[] = $wb->get_home_folder();
	} else {
		$array = $full_list;
	}
	// get groups of current user
	$curr_groups = $wb->get_groups_id();
	// if current user is in admin-group
	if( ($admin_key = array_search('1', $curr_groups)) == true)
	{
		// remove admin-group from list
		// unset($curr_groups[$admin_key]);
		// search for all users where the current user is admin from
		foreach( $curr_groups as $group)
		{
			$sql  = 'SELECT `home_folder` FROM `'.TABLE_PREFIX.'users` ';
			$sql .= 'WHERE (FIND_IN_SET(\''.$group.'\', `groups_id`) > 0) AND `home_folder` <> \'\' AND `user_id` <> '.$wb->get_user_id();
			if( ($res_hf = $database->query($sql)) != null ) {
				while( $rec_hf = $res_hf->fetchrow() ) {
					$allow_list[] = $rec_hf['home_folder'];
				}
			}
		}
	}

	$tmp_array = $full_list;
	// create a list for readwrite dir
	while( sizeof($tmp_array) > 0)
	{
        $tmp = array_shift($tmp_array);
        $x = 0;
		while($x < sizeof($allow_list)) {
			if(strpos ($tmp,$allow_list[$x])) {
				$array[] = $tmp;
			}
			$x++;
		}
	}
	$tmp = array();
    $array = array_unique($array);
	$full_list = array_merge($tmp,$array);
    unset($array);
    unset($allow_list);
	return $full_list;
}

// Function to create directories
function make_dir($dir_name, $dir_mode = OCTAL_DIR_MODE, $recursive=true)
{
	$bRetval = is_dir($dir_name);
	if(!$bRetval)
    {
		// To create the folder with 0777 permissions, we need to set umask to zero.
		$oldumask = umask(0) ;
		$bRetval = mkdir($dir_name, $dir_mode|0711, $recursive);
		umask( $oldumask ) ;
	}
	return $bRetval;
}

/**
 * Function to chmod files and/or directories
 * the function also prevents the owner to loose rw-rights
 * @param string $sName
 * @param int rights in dec-value. 0= use wb-defaults
 * @return bool
 */
function change_mode($sName, $iMode = 0 )
{
	$bRetval = true;
    $iErrorReporting = error_reporting(0);
	$iMode = intval($iMode) & 0777; // sanitize value
	if (strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN')
	{ // Only chmod if os is not windows
		$bRetval = false;
		if(!$iMode) {
			$iMode = (is_file($sName) ? octdec(STRING_FILE_MODE) : octdec(STRING_DIR_MODE));
		}
		$iMode |= 0600; // set o+rw
		if(is_writable($sName)) {
			$bRetval = chmod($sName, $iMode);
		}
	}
    error_reporting($iErrorReporting);
	return $bRetval;
}

// Function to figure out if a parent exists
function is_parent($page_id)
{
	global $database;
	// Get parent
	$sql = 'SELECT `parent` FROM `'.TABLE_PREFIX.'pages` WHERE `page_id` = '.$page_id;
	$parent = $database->get_one($sql);
	// If parent isnt 0 return its ID
	if(is_null($parent)) {
		return false;
	}else {
		return $parent;
	}
}

// Function to work out level
function level_count($page_id)
{
	global $database;
	// Get page parent
	$sql = 'SELECT `parent` FROM `'.TABLE_PREFIX.'pages` WHERE `page_id` = '.$page_id;
	$parent = $database->get_one($sql);
	if($parent > 0)
	{	// Get the level of the parent
		$sql = 'SELECT `level` FROM `'.TABLE_PREFIX.'pages` WHERE `page_id` = '.$parent;
		$level = $database->get_one($sql);
		return $level+1;
	}else {
		return 0;
	}
}

// Function to work out root parent
function root_parent($page_id)
{
	global $database;
	// Get page details
	$sql = 'SELECT `parent`, `level` FROM `'.TABLE_PREFIX.'pages` WHERE `page_id` = '.$page_id;

	$query_page = $database->query($sql);
	$fetch_page = $query_page->fetchRow(MYSQL_ASSOC);
	$parent = $fetch_page['parent'];
	$level = $fetch_page['level'];
	if($level == 1) {
		return $parent;
	} elseif($parent == 0) {
		return $page_id;
	} else {	// Figure out what the root parents id is
		$parent_ids = array_reverse(get_parent_ids($page_id));
		return $parent_ids[0];
	}
}

// Function to get page title
function get_page_title($id)
{
	global $database;
	// Get title
	$sql = 'SELECT `page_title` FROM `'.TABLE_PREFIX.'pages` WHERE `page_id` = '.$id;
	$page_title = $database->get_one($sql);
	return $page_title;
}

// Function to get a pages menu title
function get_menu_title($id)
{
	global $database;
	// Get title
	$sql = 'SELECT `menu_title` FROM `'.TABLE_PREFIX.'pages` WHERE `page_id` = '.$id;
	$menu_title = $database->get_one($sql);
	return $menu_title;
}
// Function to get a pages filename in sub
function get_sub_filename($id)
{
	$database = WbDatabase::getInstance();
	// Get title
	$sql = 'SELECT `link` FROM `'.TABLE_PREFIX.'pages` '
	      .'WHERE `page_id` = '.$id.' '
	      .  'AND `level`>=0';
	$sRetval = basename($database->get_one($sql));
	return $sRetval;
}

// Function to get all parent page titles
function get_parent_titles($parent_id)
{
	$titles[] = get_sub_filename($parent_id);
	if(is_parent($parent_id) != false) {
		$parent_titles = get_parent_titles(is_parent($parent_id));
		$titles = array_merge($titles, $parent_titles);
	}
	return $titles;
}

// Function to get all parent page id's
function get_parent_ids($parent_id)
{
	$ids[] = $parent_id;
	if(is_parent($parent_id) != false) {
		$parent_ids = get_parent_ids(is_parent($parent_id));
		$ids = array_merge($ids, $parent_ids);
	}
	return $ids;
}

// Function to genereate page trail
function get_page_trail($page_id)
{
	return implode(',', array_reverse(get_parent_ids($page_id)));
}

// Function to get all sub pages id's
function get_subs($parent, array $subs )
{
	// Connect to the database
	global $database;
	// Get id's
	$sql = 'SELECT `page_id` FROM `'.TABLE_PREFIX.'pages` WHERE `parent` = '.$parent;
	if( ($query = $database->query($sql)) ) {
		while($fetch = $query->fetchRow(MYSQL_ASSOC)) {
			$subs[] = $fetch['page_id'];
			// Get subs of this sub recursive
			$subs = get_subs($fetch['page_id'], $subs);
		}
	}
	// Return subs array
	return $subs;
}

// Function as replacement for php's htmlspecialchars()
// Will not mangle HTML-entities
function my_htmlspecialchars($string)
{
	$string = preg_replace('/&(?=[#a-z0-9]+;)/i', '__amp;_', $string);
	$string = strtr($string, array('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;', '\''=>'&#39;'));
	$string = preg_replace('/__amp;_(?=[#a-z0-9]+;)/i', '&', $string);
	return($string);
}

// Convert a string from mixed html-entities/umlauts to pure $charset_out-umlauts
// Will replace all numeric and named entities except &gt; &lt; &apos; &quot; &#039; &nbsp;
// In case of error the returned string is unchanged, and a message is emitted.
function entities_to_umlauts($string, $charset_out=DEFAULT_CHARSET)
{
	require_once(WB_PATH.'/framework/functions-utf8.php');
	return entities_to_umlauts2($string, $charset_out);
}

// Will convert a string in $charset_in encoding to a pure ASCII string with HTML-entities.
// In case of error the returned string is unchanged, and a message is emitted.
function umlauts_to_entities($string, $charset_in=DEFAULT_CHARSET)
{
	require_once(WB_PATH.'/framework/functions-utf8.php');
	return umlauts_to_entities2($string, $charset_in);
}

// Function to convert a page title to a page filename
function page_filename($string)
{
	require_once(WB_PATH.'/framework/functions-utf8.php');
	$string = entities_to_7bit($string);
	// Now remove all bad characters
	$bad = array(
	'\'', /* /  */ '"', /* " */	'<', /* < */	'>', /* > */
	'{', /* { */	'}', /* } */	'[', /* [ */	']', /* ] */	'`', /* ` */
	'!', /* ! */	'@', /* @ */	'#', /* # */	'$', /* $ */	'%', /* % */
	'^', /* ^ */	'&', /* & */	'*', /* * */	'(', /* ( */	')', /* ) */
	'=', /* = */	'+', /* + */	'|', /* | */	'/', /* / */	'\\', /* \ */
	';', /* ; */	':', /* : */	',', /* , */	'?' /* ? */
	);
	$string = str_replace($bad, '', $string);
	// replace multiple dots in filename to single dot and (multiple) dots at the end of the filename to nothing
	$string = preg_replace(array('/\.+/', '/\.+$/'), array('.', ''), $string);
	// Now replace spaces with page spcacer
	$string = trim($string);
	$string = preg_replace('/(\s)+/', PAGE_SPACER, $string);
	// Now convert to lower-case
	$string = strtolower($string);
	// If there are any weird language characters, this will protect us against possible problems they could cause
	$string = str_replace(array('%2F', '%'), array('/', ''), urlencode($string));
	// Finally, return the cleaned string
	return $string;
}

// Function to convert a desired media filename to a clean mediafilename
function media_filename($string)
{
	require_once(WB_PATH.'/framework/functions-utf8.php');
	$string = entities_to_7bit($string);
	// Now remove all bad characters
	$bad = array('\'','"','`','!','@','#','$','%','^','&','*','=','+','|','/','\\',';',':',',','?');
	$string = str_replace($bad, '', $string);
	// replace multiple dots in filename to single dot and (multiple) dots at the end of the filename to nothing
	$string = preg_replace(array('/\.+/', '/\.+$/', '/\s/'), array('.', '', '_'), $string);
	// Clean any page spacers at the end of string
	$string = trim($string);
	// Finally, return the cleaned string
	return $string;
}

// Function to work out a page link
if(!function_exists('page_link'))
{
	function page_link($link)
	{
		global $admin;
		return $admin->page_link($link);
	}
}


// Create a new directory and/or protected file in the given directory
function createFolderProtectFile($sAbsDir='', $make_dir=true)
{
	$retVal   = array();
	$oReg     = WbAdaptor::getInstance();
	$oTrans   = Translate::getInstance();
	$sAbsDir  = rtrim(str_replace('\\', '/', trim($sAbsDir)), '/').'/';
	if(($sAbsDir=='/') || ($sAbsDir == $oReg->AppPath))
	{
		return $retVal;
	}
	if($make_dir==true)
	{
		// Check to see if the folder already exists
		if(is_readable($sAbsDir)) {
			$retVal[] = basename($sAbsDir).'::'.$oTrans->MESSAGE_MEDIA_DIR_EXISTS;
		}
		if(!make_dir($sAbsDir) && !is_dir($sAbsDir))
		{
			$retVal[] = basename($sAbsDir).'::'.$oTrans->MESSAGE_MEDIA_DIR_NOT_MADE;
		}else
		{
			change_mode($sAbsDir);
		}
		return $retVal;
	}
	if(is_writable($sAbsDir))
	{
		$sResponse  = $_SERVER['SERVER_PROTOCOL'].' 301 Moved Permanently';
	// build file content
		$content =
			'<?php'."\n".
			'// *** This file is generated by WebsiteBaker Ver.'.$oReg->AppVersion."\n".
			'// *** Creation date: '.date('c')."\n".
			'// *** Do not modify this file manually'."\n".
			'// *** WB will rebuild this file from time to time!!'."\n".
			'// *************************************************'."\n".
			"\t".'header(\''.$sResponse.'\');'."\n".
			"\t".'header(\'Location: '.$oReg->AppUrl.'index.php\');'."\n".
			'// *************************************************'."\n";
		$filename = $sAbsDir.'/index.php';
	// write content into file
		if(is_writable($filename) || !file_exists($filename))
		{
			if(file_put_contents($filename, $content))
			{
				$retVal[] = change_mode($filename);
			}else
			{
				$retVal[] = $oTrans->MESSAGE_GENERIC_BAD_PERMISSIONS.' :: '.$filename;
			}
		}
	}else
	{
		$retVal[] = $oTrans->MESSAGE_GENERIC_BAD_PERMISSIONS;
	}
	return $retVal;
}

function rebuildFolderProtectFile($dir='')
{
	global $MESSAGE;
	$retVal = array();
	$tmpVal = array();
	$dir = rtrim(str_replace('\/\\', '/', $dir), '/');
	try {
		$files = array();
		$files[] = $dir;
		foreach(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir)) as $fileInfo) {
			$files[] = $fileInfo->getPath();
		}
		$files = array_unique($files);
		foreach( $files as $file) {
			$protect_file = rtrim(str_replace('\/\\', '/', $file), '/');
			$tmpVal['file'][] = createFolderProtectFile($protect_file,false);
		}
		$retVal = $tmpVal['file'];
	} catch ( Exception $e ) {
		$retVal[] = $MESSAGE['MEDIA_DIR_ACCESS_DENIED'];
	}
	return $retVal;
}

// Create a new file in the pages directory
/**
 * createAccessFile()
 * 
 * @param string The full path and filename to the new accessfile
 * @param int    Id of the page for which the file should created
 * @param mixed  an array with one or more additional statements to include in accessfile.
 * @return bool|string true or error message
 * @deprecated this function will be replaced by a core method in next version
 * @description: Create a new access file in the pages directory and subdirectory also if needed.<br />
 * Example: $aOptionalCommands = array(
 *                     '$section_id = '.$section_id,
 *                     '$mod_var_int = '.$mod_var_int,
 *                     'define(\'MOD_CONSTANT\'', '.$mod_var_int.')'
 *          );
 * forbidden commands: include|require[_once]
 * @deprecated   2013/02/19
 */
  
function create_access_file($sFileName, $iPageId, $iLevel = 0, array $aOptionalCommands = array() )
{
	global $MESSAGE;
	$sError = '';
// sanitize pathnames for the standard 'trailing slash' scheme
	$sAppPath  = rtrim(str_replace('\\', '/', WB_PATH), '/').'/';
	$sFileName = str_replace('\\', '/', $sFileName);
// try to create the whoole path to the accessfile
	$sAccessPath = dirname($sFileName).'/';
	if(!($bRetval = is_dir($sAccessPath))) {
		$iOldUmask = umask(0) ;
		// sanitize directory mode to 'o+rwx/g+x/u+x' and create path
		$bRetval = mkdir($sAccessPath, (OCTAL_DIR_MODE |0711), true); 
		umask($iOldUmask);
	}
	if($bRetval) {
	// check if accessfile is writeable
		if(is_writable($sAccessPath) ||
		   (file_exists($sFileName) && is_writable($sFileName)) )
		{
		// build content for accessfile
			$sContent  = '<?php'."\n"
			           . '// *** This file is generated by WebsiteBaker Ver.'.VERSION."\n"
			           . '// *** Creation date: '.date('c')."\n"
			           . '// *** Do not modify this file manually'."\n"
			           . '// *** WB will rebuild this file from time to time!!'."\n"
			           . '// *************************************************'."\n"
			           . "\t".'$page_id = '.$iPageId.';'."\n";
		// analyse OptionalCommands and add it to the accessfile
			foreach($aOptionalCommands as $sCommand) {
			// loop through all available entries
			// remove all leading whitespaces and chars less then \x41(A) except \x24 ($)
			// also all trailing whitespaces and \x3B(;) too.
				$sNewCmd  = rtrim(ltrim($sCommand, "\x00..\x23\x25..\x40"), ';');
				if(preg_match('/^include|^require/i', $sNewCmd)) {
				// insert forbidden include|require[_once] command and comment it out
					$sContent .= "\t".'// *not allowed command >> * '.$sNewCmd.';'."\n";
				}elseif(preg_match('/^define/i', $sNewCmd)) {
				// insert active define command and comment it as set deprecated
					$sContent .= "\t".$sNewCmd.'; // *deprecated command*'."\n";
				}else {
				// insert allowed active command
					$sContent .= "\t".$sNewCmd.';'."\n";
				}
			}
		// calculate the needed backsteps and create the relative link to index.php
			$iBackSteps = substr_count(str_replace($sAppPath, '', $sFileName), '/');
			$sIndexFile = str_repeat('../', $iBackSteps).'index.php';
		// insert needed require command for index.php
			$sContent .= "\t".'require(\''.$sIndexFile.'\');'."\n"
			           . '// *************************************************'."\n"
			           . '// end of file'."\n";
		// write new file out. If the file already exists overwrite its content.
			if(file_put_contents($sFileName, $sContent) !== false ) {
			// if OS is not windows then chmod the new file 
				if (strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN') {
				// sanitize filemode to 'o-x/g-x/u-x/o+rw' and chmod the new file
					$bRetval = chmod($sFileName, ((OCTAL_FILE_MODE & ~0111)|0600));
				}
			}else {
		        $sError = $MESSAGE['PAGES_CANNOT_CREATE_ACCESS_FILE'];
			}
		}else {
			$sError = $MESSAGE['UPLOAD_ERR_CANT_WRITE'];
		}
	}else {
		$sError = $MESSAGE['UPLOAD_ERR_CANT_WRITE'];
	}
	// return boolean true if ok, on error return a message
	return ($sError == '' ? true : $sError);
 }

// Function for working out a file mime type (if the in-built PHP one is not enabled)
if(!function_exists('mime_content_type'))
{
    function mime_content_type($filename)
	{
	    $mime_types = array(
            'txt'	=> 'text/plain',
            'htm'	=> 'text/html',
            'html'	=> 'text/html',
            'php'	=> 'text/html',
            'css'	=> 'text/css',
            'js'	=> 'application/javascript',
            'json'	=> 'application/json',
            'xml'	=> 'application/xml',
            'swf'	=> 'application/x-shockwave-flash',
            'flv'	=> 'video/x-flv',

            // images
            'png'	=> 'image/png',
            'jpe'	=> 'image/jpeg',
            'jpeg'	=> 'image/jpeg',
            'jpg'	=> 'image/jpeg',
            'gif'	=> 'image/gif',
            'bmp'	=> 'image/bmp',
            'ico'	=> 'image/vnd.microsoft.icon',
            'tiff'	=> 'image/tiff',
            'tif'	=> 'image/tiff',
            'svg'	=> 'image/svg+xml',
            'svgz'	=> 'image/svg+xml',

            // archives
            'zip'	=> 'application/zip',
            'rar'	=> 'application/x-rar-compressed',
            'exe'	=> 'application/x-msdownload',
            'msi'	=> 'application/x-msdownload',
            'cab'	=> 'application/vnd.ms-cab-compressed',

            // audio/video
            'mp3'	=> 'audio/mpeg',
            'mp4'	=> 'audio/mpeg',
            'qt'	=> 'video/quicktime',
            'mov'	=> 'video/quicktime',

            // adobe
            'pdf'	=> 'application/pdf',
            'psd'	=> 'image/vnd.adobe.photoshop',
            'ai'	=> 'application/postscript',
            'eps'	=> 'application/postscript',
            'ps'	=> 'application/postscript',

            // ms office
            'doc'	=> 'application/msword',
            'rtf'	=> 'application/rtf',
            'xls'	=> 'application/vnd.ms-excel',
            'ppt'	=> 'application/vnd.ms-powerpoint',

            // open office
            'odt'	=> 'application/vnd.oasis.opendocument.text',
            'ods'	=> 'application/vnd.oasis.opendocument.spreadsheet',
        );
        $temp = explode('.',$filename);
        $ext = strtolower(array_pop($temp));
        if (array_key_exists($ext, $mime_types)) {
            return $mime_types[$ext];
        }elseif (function_exists('finfo_open')) {
            $finfo = finfo_open(FILEINFO_MIME);
            $mimetype = finfo_file($finfo, $filename);
            finfo_close($finfo);
            return $mimetype;
        }else {
            return 'application/octet-stream';
        }
    }
}

// Generate a thumbnail from an image
function make_thumb($source, $destination, $size)
{
	// Check if GD is installed
	if(extension_loaded('gd') && function_exists('imageCreateFromJpeg'))
	{
		// First figure out the size of the thumbnail
		list($original_x, $original_y) = getimagesize($source);
		if ($original_x > $original_y) {
			$thumb_w = $size;
			$thumb_h = $original_y*($size/$original_x);
		}
		if ($original_x < $original_y) {
			$thumb_w = $original_x*($size/$original_y);
			$thumb_h = $size;
		}
		if ($original_x == $original_y) {
			$thumb_w = $size;
			$thumb_h = $size;
		}
		// Now make the thumbnail
		$source = imageCreateFromJpeg($source);
		$dst_img = ImageCreateTrueColor($thumb_w, $thumb_h);
		imagecopyresampled($dst_img,$source,0,0,0,0,$thumb_w,$thumb_h,$original_x,$original_y);
		imagejpeg($dst_img, $destination);
		// Clear memory
		imagedestroy($dst_img);
		imagedestroy($source);
	   // Return true
		return true;
	} else {
		return false;
	}
}

/*
 * Function to work-out a single part of an octal permission value
 *
 * @param mixed $octal_value: an octal value as string (i.e. '0777') or real octal integer (i.e. 0777 | 777)
 * @param string $who: char or string for whom the permission is asked( U[ser] / G[roup] / O[thers] )
 * @param string $action: char or string with the requested action( r[ead..] / w[rite..] / e|x[ecute..] )
 * @return boolean
 */
function extract_permission($octal_value, $who, $action)
{
	// Make sure that all arguments are set and $octal_value is a real octal-integer
	if(($who == '') || ($action == '') || (preg_match( '/[^0-7]/', (string)$octal_value ))) {
		return false; // invalid argument, so return false
	}
	// convert $octal_value into a decimal-integer to be sure having a valid value
	$right_mask = octdec($octal_value);
	$action_mask = 0;
	// set the $action related bit in $action_mask
	switch($action[0]) { // get action from first char of $action
		case 'r':
		case 'R':
			$action_mask = 4; // set read-bit only (2^2)
			break;
		case 'w':
		case 'W':
			$action_mask = 2; // set write-bit only (2^1)
			break;
		case 'e':
		case 'E':
		case 'x':
		case 'X':
			$action_mask = 1; // set execute-bit only (2^0)
			break;
		default:
			return false; // undefined action name, so return false
	}
	// shift action-mask into the right position
	switch($who[0]) { // get who from first char of $who
		case 'u':
		case 'U':
			$action_mask <<= 3; // shift left 3 bits
		case 'g':
		case 'G':
			$action_mask <<= 3; // shift left 3 bits
		case 'o':
		case 'O':
			/* NOP */
			break;
		default:
			return false; // undefined who, so return false
	}
	return( ($right_mask & $action_mask) != 0 ); // return result of binary-AND
}

// Function to delete a page
	function delete_page($page_id)
	{
		global $admin, $database, $MESSAGE;
		// Find out more about the page
		$sql  = 'SELECT `page_id`, `menu_title`, `page_title`, `level`, ';
		$sql .=        '`link`, `parent`, `modified_by`, `modified_when` ';
		$sql .= 'FROM `'.TABLE_PREFIX.'pages` WHERE `page_id`='.$page_id;
		$results = $database->query($sql);
		if($database->is_error())    { $admin->print_error($database->get_error()); }
		if($results->numRows() == 0) { $admin->print_error($MESSAGE['PAGES_NOT_FOUND']); }
		$results_array = $results->fetchRow(MYSQL_ASSOC);
		$parent     = $results_array['parent'];
		$level      = $results_array['level'];
		$sPageLink       = $results_array['link'];
		$page_title = $results_array['page_title'];
		$menu_title = $results_array['menu_title'];
		// Get the sections that belong to the page
		$sql  = 'SELECT `section_id`, `module` FROM `'.TABLE_PREFIX.'sections` ';
		$sql .= 'WHERE `page_id`='.$page_id;
		$query_sections = $database->query($sql);
		if($query_sections->numRows() > 0)
		{
			while($section = $query_sections->fetchRow()) {
				// Set section id
				$section_id = $section['section_id'];
				// Include the modules delete file if it exists
				if(file_exists(WB_PATH.'/modules/'.$section['module'].'/delete.php')) {
					include(WB_PATH.'/modules/'.$section['module'].'/delete.php');
				}
			}
		}
		// Update the sections table
		$sql = 'DELETE FROM `'.TABLE_PREFIX.'sections` WHERE `page_id`='.$page_id;
		$database->query($sql);
		if($database->is_error()) {
			$admin->print_error($database->get_error());
		}
		// Include the ordering class or clean-up ordering
		include_once(WB_PATH.'/framework/class.order.php');
		$order = new order(TABLE_PREFIX.'pages', 'position', 'page_id', 'parent');
		$order->clean($parent);
		// Unlink the page access file and directory
		$directory = WB_PATH.PAGES_DIRECTORY.$sPageLink;
		$filename = $directory.PAGE_EXTENSION;
		$directory .= '/';
		if(is_writable($filename))
		{
			if(!is_writable(WB_PATH.PAGES_DIRECTORY.'/')) {
				$admin->print_error($MESSAGE['PAGES_CANNOT_DELETE_ACCESS_FILE']);
			} else {
				unlink($filename);
				if( is_writable($directory) && (rtrim($directory,'/') != WB_PATH.PAGES_DIRECTORY ) && (substr($sPageLink, 0, 1) != '.') )
				{
					rm_full_dir($directory);
				}
			}
		}
		// Update the pages table
		$sql = 'DELETE FROM `'.TABLE_PREFIX.'pages` WHERE `page_id`='.$page_id;
		$database->query($sql);
		if($database->is_error()) {
			$admin->print_error($database->get_error());
		}
	}

/*
 * @param string $file: name of the file to read
 * @param int $size: number of maximum bytes to read (0 = complete file)
 * @return string: the content as string, false on error
 */
	function getFilePart($file, $size = 0)
	{
		$file_content = '';
		if( file_exists($file) && is_file($file) && is_readable($file))
		{
			if($size == 0) {
				$size = filesize($file);
			}
			if(($fh = fopen($file, 'rb'))) {
				if( ($file_content = fread($fh, $size)) !== false ) {
					return $file_content;
				}
				fclose($fh);
			}
		}
		return false;
	}

	/**
	* replace varnames with values in a string
	*
	* @param string $subject: stringvariable with vars placeholder
	* @param array $replace: values to replace vars placeholder
	* @return string
	*/
    function replace_vars($subject = '', &$replace = null )
    {
		if(is_array($replace))
		{
			foreach ($replace  as $key => $value) {
				$subject = str_replace("{{".$key."}}", $value, $subject);
			}
		}
		return $subject;
    }

function setAccessDeniedToNewTools($sModulName)
{
	$oDb = WbDatabase::getInstance();
	$sql = 'UPDATE `'.$oDb->getTablePrefix.'groups` '
		 . 'SET `module_permissions`= TRIM(LEADING \',\' FROM (CONCAT(`module_permissions`, \','.$sModulName.'\'))) '
	     . 'WHERE `group_id`<>1 AND NOT FIND_IN_SET(\''.$sModulName.'\', `module_permissions`)';
	$oDb->query($sql);
}
	
// Load module into DB
function load_module($directory, $install = false)
{
	global $database,$admin,$MESSAGE;
	$retVal = false;
	if(is_dir($directory) && file_exists($directory.'/info.php'))
	{
		require($directory.'/info.php');
		if(isset($module_name))
		{
			if(!isset($module_license)) { $module_license = 'GNU General Public License'; }
			if(!isset($module_platform) && isset($module_designed_for)) { $module_platform = $module_designed_for; }
			if(!isset($module_function) && isset($module_type)) { $module_function = $module_type; }
			$module_function = strtolower($module_function);
			// Check that it doesn't already exist
			$sqlwhere = 'WHERE `type` = \'module\' AND `directory` = \''.$module_directory.'\'';
			$sql  = 'SELECT COUNT(*) FROM `'.TABLE_PREFIX.'addons` '.$sqlwhere;
			if( $database->get_one($sql) ) {
				$sql  = 'UPDATE `'.TABLE_PREFIX.'addons` SET ';
			}else{
				// Load into DB
				$sql  = 'INSERT INTO `'.TABLE_PREFIX.'addons` SET ';
				$sqlwhere = '';
			}
			$sql .= '`directory`=\''.$module_directory.'\', ';
			$sql .= '`name`=\''.$module_name.'\', ';
			$sql .= '`description`=\''.addslashes($module_description).'\', ';
			$sql .= '`type`=\'module\', ';
			$sql .= '`function`=\''.$module_function.'\', ';
			$sql .= '`version`=\''.$module_version.'\', ';
			$sql .= '`platform`=\''.$module_platform.'\', ';
			$sql .= '`author`=\''.addslashes($module_author).'\', ';
			$sql .= '`license`=\''.addslashes($module_license).'\'';
			$sql .= $sqlwhere;
			$retVal = intval($database->query($sql) ? true : false);
			if($retVal && !$sqlwhere &&
			   ($module_function == 'tool' || $module_function == 'page' || $module_function == 'wysiwyg')
			  ) {
				setAccessDeniedToNewTools($module_directory);
			}
			// Run installation script
			if($install == true) {
				if(file_exists($directory.'/install.php')) {
					require($directory.'/install.php');
				}
			}
		}
        return $retVal;
	}
}

// Load template into DB
function load_template($directory)
{
	global $database, $admin;
	$retVal = false;
	if(is_dir($directory) && file_exists($directory.'/info.php'))
	{
		require($directory.'/info.php');
		if(isset($template_name))
		{
			if(!isset($template_license)) {
              $template_license = 'GNU General Public License';
            }
			if(!isset($template_platform) && isset($template_designed_for)) {
              $template_platform = $template_designed_for;
            }
			if(!isset($template_function)) {
              $template_function = 'template';
            }
			// Check that it doesn't already exist
			$sqlwhere = 'WHERE `type`=\'template\' AND `directory`=\''.$template_directory.'\'';
			$sql  = 'SELECT COUNT(*) FROM `'.TABLE_PREFIX.'addons` '.$sqlwhere;
			if( $database->get_one($sql) ) {
				$sql  = 'UPDATE `'.TABLE_PREFIX.'addons` SET ';
			}else{
				// Load into DB
				$sql  = 'INSERT INTO `'.TABLE_PREFIX.'addons` SET ';
				$sqlwhere = '';
			}
			$sql .= '`directory`=\''.$template_directory.'\', ';
			$sql .= '`name`=\''.$template_name.'\', ';
			$sql .= '`description`=\''.addslashes($template_description).'\', ';
			$sql .= '`type`=\'template\', ';
			$sql .= '`function`=\''.$template_function.'\', ';
			$sql .= '`version`=\''.$template_version.'\', ';
			$sql .= '`platform`=\''.$template_platform.'\', ';
			$sql .= '`author`=\''.addslashes($template_author).'\', ';
			$sql .= '`license`=\''.addslashes($template_license).'\' ';
			$sql .= $sqlwhere;
			$retVal = intval($database->query($sql) ? true : false);
		}
	}
	return $retVal;
}

// Load language into DB
function load_language($file)
{
	global $database,$admin;
	$retVal = false;
	if (file_exists($file) && preg_match('#^([A-Z]{2}.php)#', basename($file)))
	{
		// require($file);  it's to large
		// read contents of the template language file into string
		$data = @file_get_contents(WB_PATH.'/languages/'.str_replace('.php','',basename($file)).'.php');
		// use regular expressions to fetch the content of the variable from the string
		$language_name = get_variable_content('language_name', $data, false, false);
		$language_code = get_variable_content('language_code', $data, false, false);
		$language_author = get_variable_content('language_author', $data, false, false);
		$language_version = get_variable_content('language_version', $data, false, false);
		$language_platform = get_variable_content('language_platform', $data, false, false);

		if(isset($language_name))
		{
			if(!isset($language_license)) { $language_license = 'GNU General Public License'; }
			if(!isset($language_platform) && isset($language_designed_for)) { $language_platform = $language_designed_for; }
			// Check that it doesn't already exist
			$sqlwhere = 'WHERE `type`=\'language\' AND `directory`=\''.$language_code.'\'';
			$sql  = 'SELECT COUNT(*) FROM `'.TABLE_PREFIX.'addons` '.$sqlwhere;
			if( $database->get_one($sql) ) {
				$sql  = 'UPDATE `'.TABLE_PREFIX.'addons` SET ';
			}else{
				// Load into DB
				$sql  = 'INSERT INTO `'.TABLE_PREFIX.'addons` SET ';
				$sqlwhere = '';
			}
			$sql .= '`directory`=\''.$language_code.'\', ';
			$sql .= '`name`=\''.$language_name.'\', ';
            $sql .= '`description`=\'\', ';
			$sql .= '`function`=\'\', ';
			$sql .= '`type`=\'language\', ';
			$sql .= '`version`=\''.$language_version.'\', ';
			$sql .= '`platform`=\''.$language_platform.'\', ';
			$sql .= '`author`=\''.addslashes($language_author).'\', ';
			$sql .= '`license`=\''.addslashes($language_license).'\' ';
			$sql .= $sqlwhere;
			$retVal = intval($database->query($sql) ? true : false);
		}
	}
	return $retVal;
}

// Upgrade module info in DB, optionally start upgrade script
function upgrade_module($directory, $upgrade = false)
{
	global $database, $admin, $MESSAGE, $new_module_version;
	$mod_directory = WB_PATH.'/modules/'.$directory;
	if(file_exists($mod_directory.'/info.php'))
	{
		require($mod_directory.'/info.php');
		if(isset($module_name))
		{
			if(!isset($module_license)) { $module_license = 'GNU General Public License'; }
			if(!isset($module_platform) && isset($module_designed_for)) { $module_platform = $module_designed_for; }
			if(!isset($module_function) && isset($module_type)) { $module_function = $module_type; }
			$module_function = strtolower($module_function);
			// Check that it does already exist
			$sql  = 'SELECT COUNT(*) FROM `'.TABLE_PREFIX.'addons` ';
			$sql .= 'WHERE `directory`=\''.$module_directory.'\'';
			if( $database->get_one($sql) )
			{
				// Update in DB
				$sql  = 'UPDATE `'.TABLE_PREFIX.'addons` SET ';
				$sql .= '`version`=\''.$module_version.'\', ';
				$sql .= '`description`=\''.addslashes($module_description).'\', ';
				$sql .= '`platform`=\''.$module_platform.'\', ';
				$sql .= '`author`=\''.addslashes($module_author).'\', ';
				$sql .= '`license`=\''.addslashes($module_license).'\' ';
				$sql .= 'WHERE `directory`=\''.$module_directory.'\' ';
				$database->query($sql);
				if($database->is_error()) {
					$admin->print_error($database->get_error());
				}
				// Run upgrade script
				if($upgrade == true) {
					if(file_exists($mod_directory.'/upgrade.php')) {
						require($mod_directory.'/upgrade.php');
					}
				}
			}
		}
	}
}

// extracts the content of a string variable from a string (save alternative to including files)
if(!function_exists('get_variable_content'))
{
	function get_variable_content($search, $data, $striptags=true, $convert_to_entities=true)
	{
		$match = '';
		// search for $variable followed by 0-n whitespace then by = then by 0-n whitespace
		// then either " or ' then 0-n characters then either " or ' followed by 0-n whitespace and ;
		// the variable name is returned in $match[1], the content in $match[3]
		if (preg_match('/(\$' .$search .')\s*=\s*("|\')(.*)\2\s*;/', $data, $match))
		{
			if(strip_tags(trim($match[1])) == '$' .$search) {
				// variable name matches, return it's value
				$match[3] = ($striptags == true) ? strip_tags($match[3]) : $match[3];
				$match[3] = ($convert_to_entities == true) ? htmlentities($match[3]) : $match[3];
				return $match[3];
			}
		}
		return false;
	}
}

/*
 * @param string $modulname: like saved in addons.directory
 * @param boolean $source: true reads from database, false from info.php
 * @return string:  the version as string, if not found returns null
 */

	function get_modul_version($modulname, $source = true)
	{
		global $database;
		$version = null;
		if( $source != true )
		{
			$sql  = 'SELECT `version` FROM `'.TABLE_PREFIX.'addons` ';
			$sql .= 'WHERE `directory`=\''.$modulname.'\'';
			$version = $database->get_one($sql);
		} else {
			$info_file = WB_PATH.'/modules/'.$modulname.'/info.php';
			if(file_exists($info_file)) {
				if(($info_file = file_get_contents($info_file))) {
					$version = get_variable_content('module_version', $info_file, false, false);
					$version = ($version !== false) ? $version : null;
				}
			}
		}
		return $version;
	}

/*
 * @param string $varlist: commaseperated list of varnames to move into global space
 * @return bool:  false if one of the vars already exists in global space (error added to msgQueue)
 */
	function vars2globals_wrapper($varlist)
	{
		$retval = true;
		if( $varlist != '')
		{
			$vars = explode(',', $varlist);
			foreach( $vars as $var)
			{
				if( isset($GLOBALS[$var]) ){
					ErrorLog::write( 'variabe $'.$var.' already defined in global space!!',__FILE__, __FUNCTION__, __LINE__);
					$retval = false;
				}else {
					global $$var;
				}
			}
		}
		return $retval;
	}

/*
 * filter directory traversal more thoroughly, thanks to hal 9000
 * @param string $dir: directory relative to MEDIA_DIRECTORY
 * @param bool $with_media_dir: true when to include MEDIA_DIRECTORY
 * @return: false if directory traversal detected, real path if not
 */
	function check_media_path($directory, $with_media_dir = true)
	{
		$md = ($with_media_dir) ? MEDIA_DIRECTORY : '';
		$dir = realpath(WB_PATH . $md . '/' . utf8_decode($directory));
		$required = realpath(WB_PATH . MEDIA_DIRECTORY);
		if (strstr($dir, $required)) {
			return $dir;
		} else {
			return false;
		}
	}

/*
urlencode function and rawurlencode are mostly based on RFC 1738.
However, since 2005 the current RFC in use for URIs standard is RFC 3986.
Here is a function to encode URLs according to RFC 3986.
*/
if(!function_exists('url_encode')){
	function url_encode($string) {
	    $string = html_entity_decode($string,ENT_QUOTES,'UTF-8');
	    $entities = array('%21', '%2A', '%27', '%28', '%29', '%3B', '%3A', '%40', '%26', '%3D', '%2B', '%24', '%2C', '%2F', '%3F', '%25', '%23', '%5B', '%5D');
	    $replacements = array('!', '*', "'", "(", ")", ";", ":", "@", "&", "=", "+", "$", ",", "/", "?", "%", "#", "[", "]");
	    return str_replace($entities,$replacements, rawurlencode($string));
	}
}

if(!function_exists('rebuild_all_accessfiles'))
{
	function rebuild_all_accessfiles($bShowDetails=false )
	{
		$oDb = WbDatabase::getInstance();
		$oReg = WbAdaptor::getInstance();
	// try to remove access files and build new folder protect files
        $sTreeToDelete = $oReg->AppPath.$oReg->PagesDir;
    	if(($sTreeToDelete!='') && is_writeable($sTreeToDelete)==true)
		{
			$aDeleteLog = array();
            DeleteAccessFilesTree($sTreeToDelete, $aDeleteLog);
		// show details if debug is set
            if($bShowDetails) { $aRetval = $aDeleteLog; }
    	}
	// set logging informations
		$aRetval = array_merge((isset($aRetval) ? $aRetval : array()),
		                       createFolderProtectFile(rtrim( $oReg->AppPath.$oReg->PagesDir, '/') ));
	// Reformat/rebuild all existing access files
		$sql  = 'SELECT `page_id`,`root_parent`,`parent`,`link`,`level`,`page_trail` '
		      . 'FROM `'.$oDb->TablePrefix.'pages` '
		      . 'WHERE `link` != \'\' '
		      . 'ORDER BY `link`';
        if (($oPage = $oDb->query($sql)))
        {
            $iFileCounter = 0;
            while (($aPageRecord = $oPage->fetchRow(MYSQL_ASSOC)))
            {
		// --- begin reorg tree structure ------------------------------------------------
			// rebuild level entries
				$sql = 'SELECT `level`+1 AS `level`, `page_trail` '
				     . 'FROM `'.$oDb->TablePrefix.'pages` '
					 . 'WHERE `page_id`='.$aPageRecord['parent'];
				$oParent = $oDb->query($sql);
				if(($aParentRecord = $oParent->fetchRow(MYSQLI_ASSOC)))
				{
				// get values from existing parent record
					$aPageRecord['level'] = intval($aParentRecord['level']);
					$aPageRecord['root_parent'] = intval($aParentRecord['page_trail']);
					$aPageRecord['page_trail'] = (string)$aParentRecord['page_trail'].','.(string)$aPageRecord['page_id'];
				}else
				{
				// set as root record if no parentrecord exists
					$aPageRecord['level'] = 0;
					$aPageRecord['root_parent'] = $aPageRecord['page_id'];
					$aPageRecord['page_trail'] = (string)$aPageRecord['page_id'];
				}
			// update current record with regenerated values
                $sql  = 'UPDATE `'.$oDb->TablePrefix.'pages` '
				      . 'SET `root_parent`='.$aPageRecord['root_parent'].', '
				      .     '`level`='.$aPageRecord['level'].', '
				      .     '`page_trail`=\''.$aPageRecord['page_trail'].'\' '
				      . 'WHERE `page_id`='.$aPageRecord['page_id'];
				$oDb->query($sql);
		// --- end reorg tree structure --------------------------------------------------
				$sPageTreeRoot = $oReg->AppPath.$oReg->PagesDir;
                $sFilename = ($aPageRecord['link']).$oReg->PageExtension;
				$oAccessFile = new AccessFile($sPageTreeRoot, $sFilename, $aPageRecord['page_id']);
				$oAccessFile->write();
				unset($oAccessFile);
                $iFileCounter++;
            }
            $aRetval[] = 'Number of new formated access files: '.$iFileCounter;
        }
		return $aRetval;
	} // end of function rebuild_all_accessfiles()
} // endif

if(!function_exists('upgrade_modules')){
	function upgrade_modules($aModuleList) {
        global $database;
    	foreach($aModuleList as $sModul) {
    		if(file_exists(WB_PATH.'/modules/'.$sModul.'/upgrade.php')) {
    			$currModulVersion = get_modul_version ($sModul, false);
    			$newModulVersion =  get_modul_version ($sModul, true);
    			if((version_compare($currModulVersion, $newModulVersion) <= 0)) {
    				require(WB_PATH.'/modules/'.$sModul.'/upgrade.php');
    			}
    		}
    	}
    }
}