隐藏下载URL [英] Hide download URL

问题描述

我试图让用户看不到可下载PDF文档的网址，以便他们无法从其他地方访问它。我需要隐藏网页左下角的网址（鼠标悬停时）以及浏览器地址栏中的网址。我需要它在所有浏览器上工作。

我的HTML看起来像这样：

 < a href =http://www.example.com/files/pdf/a34501.pdf>查看PDF< / a> 
  

链接应如下所示：

查看PDF

原因是用户必须提供一个代码才能下载他们的文档，但是如果他们能够看到URL，他们可以轻松下载其他人的文档（他们只需要更改a34501.pdf部分中的一个数字） 。

我读了一些关于使用JavaScript函数来加密URL或使用外部PHP文件的信息。然而，我不知道该怎么做。

谢谢。

解决方案

  if（$ validUser ）
 {
 $ path = $ fileName; 
 $ size = filesize（$ path）; 
 $ fp = fopen（$ path，rb）; 
 $ content = fread（$ fp，$ size）; 
 fclose（$ fp）; 
 
 header（Content-length：。$ size）; 
 header（Content-type：application / octet-stream）; 
 header（Content-disposition：attachment; filename =。$ fileName。;）; 
 echo $ content; 
} 
 exit（）; 
  

假定您在服务器中有物理文件，但是如果您有它们，可以对其进行修改数据库或任何其他存储介质。当然，您必须先验证用户是否有权下载该文件，但这取决于您。

I'm trying to make the URL of a downloadable PDF document invisible to the user, so that they can't access it from anywhere else. I need to hide the URL from the bottom left of the page (when they mouse over) and the URL from the browser's address bar when they open it. I need it to work on all browsers.

My HTML looks like this:

<a href="http://www.example.com/files/pdf/a34501.pdf">View PDF</a>

And the link should look like this:

View PDF

The reason is the user must provide a code to be able to download their document, but if they can see the URL they could easily download someone else's documents (They only have to change a digit in the "a34501.pdf" part).

I read something about using a JavaScript function to encrypt the URL, or use an external PHP file. However, I don't know how to do that.

Thanks.

解决方案

Hiding the url will baffle the least tech savvy users, but not anyone who is willing to download your files and have a very minimal tech knowledge, if you need to hide your files behind a code (or pay wall) you can use a PHP script that authenticates the user and spits out the corresponding file, a small example is like this:

if($validUser)
{
    $path = $fileName;
    $size = filesize($path);
    $fp = fopen($path, "rb");
    $content = fread($fp, $size);
    fclose($fp);

    header("Content-length: ".$size);
    header("Content-type: application/octet-stream");
    header("Content-disposition: attachment; filename=".$fileName.";" );
    echo $content;
}
exit();

This assumes you have the files physically in the server, but you can modify it if you have them in a database or any other storage medium. Of course, you must first validate if the user have the right to download that file but this is up to you.

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