<?php
/**
* @version $Id: common.php 4677 2006-08-23 16:55:24Z stingrey $
* @package Joomla
* @copyright Copyright (C) 2005 Open Source Matters. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/

// no direct access
defined( '_VALID_MOS' ) or die( 'Restricted access' );

error_reporting( E_ALL );

header ("Cache-Control: no-cache, must-revalidate");	// HTTP/1.1
header ("Pragma: no-cache");	// HTTP/1.0

/**
* Utility function to return a value from a named array or a specified default
*/
define( "_MOS_NOTRIM", 0x0001 );
define( "_MOS_ALLOWHTML", 0x0002 );
function mosGetParam( &$arr, $name, $def=null, $mask=0 ) {
	$return = null;
	if (isset( $arr[$name] )) {
		if (is_string( $arr[$name] )) {
			if (!($mask&_MOS_NOTRIM)) {
				$arr[$name] = trim( $arr[$name] );
			}
			if (!($mask&_MOS_ALLOWHTML)) {
				$arr[$name] = strip_tags( $arr[$name] );
			}
			if (!get_magic_quotes_gpc()) {
				$arr[$name] = addslashes( $arr[$name] );
			}
		}
		return $arr[$name];
	} else {
		return $def;
	}
}

function mosMakePassword($length) {
	$salt = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
	$len = strlen($salt);
	$makepass="";
	mt_srand(10000000*(double)microtime());
	for ($i = 0; $i < $length; $i++)
	$makepass .= $salt[mt_rand(0,$len - 1)];
	return $makepass;
}

/**
* Chmods files and directories recursivel to given permissions
* @param path The starting file or directory (no trailing slash)
* @param filemode Integer value to chmod files. NULL = dont chmod files.
* @param dirmode Integer value to chmod directories. NULL = dont chmod directories.
* @return TRUE=all succeeded FALSE=one or more chmods failed
*/
function mosChmodRecursive($path, $filemode=NULL, $dirmode=NULL)
{
	$ret = TRUE;
	if (is_dir($path)) {
		$dh = opendir($path);
		while ($file = readdir($dh)) {
			if ($file != '.' && $file != '..') {
				$fullpath = $path.'/'.$file;
				if (is_dir($fullpath)) {
					if (!mosChmodRecursive($fullpath, $filemode, $dirmode))
						$ret = FALSE;
				} else {
					if (isset($filemode))
						if (!@chmod($fullpath, $filemode))
							$ret = FALSE;
				} // if
			} // if
		} // while
		closedir($dh);
		if (isset($dirmode))
			if (!@chmod($path, $dirmode))
				$ret = FALSE;
	} else {
		if (isset($filemode))
			$ret = @chmod($path, $filemode);
	} // if
	return $ret;
} // mosChmodRecursive

?>