dede/update_guide.php

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<?php
/**
 * 本文件用于从镜像服务器获取升级信息与文件
 * 并由用户自行控制升级
 *
 * @version        $Id: vote_main.php 1 23:54 2010年7月20日Z tianya $
 * @package        DedeCMS.Administrator
 * @copyright      Copyright (c) 2007 - 2010, DesDev, Inc.
 * @license        http://help.dedecms.com/usersguide/license.html
 * @link           http://www.dedecms.com
 */
require(dirname(__FILE__).'/config.php');
CheckPurview('sys_Edit');
@set_time_limit(0);
require(DEDEINC.'/inc/inc_fun_funAdmin.php');
require(DEDEINC.'/dedehttpdown.class.php');
 
function TestWriteAble($d)
{
    $tfile = '_dedet.txt';
    $fp = @fopen($d.$tfile,'w');
    if(!$fp) {
        return false;
    }
    else {
        fclose($fp);
        $rs = @unlink($d.'/'.$tfile);
        return true;
    }
}

function GetDirName($filename)
{
    $dirname = '../'.preg_replace("#[\\\\\/]{1,}#", '/', $filename);
    $dirname = preg_replace("#([^\/]*)$#", '', $dirname);
    return $dirname;
}

function TestIsFileDir($dirname)
{
    $dirs = array('name'=>'', 'isdir'=>FALSE, 'writeable'=>FALSE);
    $dirs['name'] =  $dirname;
    if(is_dir($dirname))
    {
        $dirs['isdir'] = TRUE;
        $dirs['writeable'] = TestWriteAble($dirname);
    }
    return $dirs;
}

function MkTmpDir($tmpdir,$filename)
{
    $basedir = DEDEDATA.'/'.$tmpdir;
    $dirname = trim(preg_replace("#[\\\\\/]{1,}#", '/', $filename));
    $dirname = preg_replace("#([^\/]*)$#","",$dirname);
    if(!is_dir($basedir)) 
    {
        mkdir($basedir,0777);
    }
    if($dirname=='')