phpcms_mirror.php

phpcms2007很好的cms内容管理系统,操作方便

<?php
include './phpcms_mirror_config.inc.php';
$auth = phpcms_decode($_GET['auth'], $MIRROR['auth_key']);
if(!$auth) msg($MSG['badparameter'], $MIRROR['redirect']);
parse_str($auth);
if(!$fileurl || !file_exists($fileurl)) msg($MSG['notfound'], $MIRROR['redirect']);
if(!$endtime || time()+$MIRROR['time_difference'] > $endtime)  msg($MSG['timeout'], $MIRROR['redirect']);
if($MIRROR['download_mode'])
{
	file_down($fileurl);
}
else
{
	header("location:".$fileurl);
	exit;
}

function file_down($file, $filename = '')
{
	global $PHP_TIME;
	if(!file_exists($file)) showmessage("The file $file is not exists !");
	$filename = $filename ? $filename : basename($file);
	$filetype = trim(substr(strrchr($filename, '.'), 1));
	$filesize = filesize($file);
    ob_end_clean();
	@set_time_limit(900);
	header('Cache-control: max-age=31536000');
	header('Expires: '.gmdate('D, d M Y H:i:s', $PHP_TIME + 31536000).' GMT');
	header('Content-Encoding: none');
	header('Content-Length: '.$filesize);
	header('Content-Disposition: attachment; filename='.$filename);
	header('Content-Type: '.$filetype);
	readfile($file);
	exit;
}

function msg($alert, $goback='')
{
	if(empty($goback)) 
	{
		exit("<script>alert('$alert');</script>");
	}
	elseif($goback=='goback')
	{
		exit("<script>alert('$alert');history.go(-1);</script>"); 
	}
	elseif($goback=='close')
	{
		exit("<script>alert('$alert');window.close();</script>"); 
	}
	else
	{
		exit("<script>alert('$alert');window.location.href='$goback';</script>");
	}
}
function phpcms_decode($txt, $key) 
{
	$txt = phpcms_key(base64_decode($txt), $key);
	$tmp = '';
	for ($i = 0;$i < strlen($txt); $i++)
	{
		$md5 = $txt[$i];
		$tmp .= $txt[++$i] ^ $md5;
	}
	return $tmp;
}

function phpcms_key($txt, $encrypt_key)
{
	$encrypt_key = md5($encrypt_key);
	$ctr = 0;
	$tmp = '';
	for($i = 0; $i < strlen($txt); $i++)
	{
		$ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
		$tmp .= $txt[$i] ^ $encrypt_key[$ctr++];
	}
	return $tmp;
}
?>