php文件服务实现虚拟挂载其他目录复制代码 代码如下:
<?php
function base64url_encode($data) {
return rtrim(strtr(base64_encode($data), "+/", "-_"), "=");
}
function base64url_decode($data) {
return base64_decode(str_pad(strtr($data, "-_", "+/"), strlen($data) % 4, "=", STR_PAD_RIGHT));
}
function array_verify($var)
{
return isset($var)&&is_array($var) && count($var)>0;
}
function format_file_size($var)
{
if($var<1024) return $var." B";
if($var<1048576) return ($var/1024.0)." K";
if($var<1073741824) return ($var/1048576.0)." M";
return ($var/1073741824.0)." G";
}
$dir="F:";//不以/结尾
$path="";
if(array_verify($_GET)&&isset($_GET["path"]))
{
$path=base64url_decode($_GET["path"]);
preg_match("#^[^/].*$|^.*.$|^..*$|./.|/.|./#",$path,$temp);
if(array_verify($temp))
{
echo
"<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=gb2312" />
<body>";
echo "警告 index.php?path=".$_GET["path"]." 非法url<br/></body></html>";
exit;
}
$path=preg_replace("#[//]{2,}#","/",$path);
}
if(is_dir($dir.$path))
{
echo "<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=gb2312" />
<body>";
echo "目录 <b>".$path."</b><br/><br/>"; $dir_res=opendir($dir.$path);
while($filen=readdir($dir_res))
{
if($filen!="."&&$filen!="..")
{
if(is_file($dir.$path."/".$filen))
{
echo "<a href="index.php?path=".base64url_encode($path."/".$filen)."" >".$filen."</a> (".format_file_size(filesize($dir.$path."/".$filen)).")<br/>";
}else
{
echo "<a href="index.php?path=".base64url_encode($path."/".$filen)."" >".$filen."</a><br/>";
} }else if($filen=="..")
{
preg_match("#([^/]+/{1})*[^/]+(?=/)#",$path,$parent);
if(array_verify($parent))
{
echo "<a href="index.php?path=".base64url_encode("/".$parent[0])."" >".$filen."</a><br/>";
}else
{
echo "<a href="index.php?path=".base64url_encode("/")."" >".$filen."</a><br/>";
}
}
}
echo "</body>
</html>";
}
else if(is_file($dir.$path))
{
$file_size = filesize($dir.$path);
header("Content-type: application/octet-stream");
header("Accept-Ranges: bytes");
header("Accept-Length: ".$file_size);
Header("Content-Disposition: attachment; filename=".basename($dir.$path));
readfile($dir.$path);//大文件请选择其他方式
}else
echo "警告:非法访问!";?>
