从另一台服务器下载文件的旁路服务器php代码

Question

My situation is illustrated in the figure below:

I have a file X on the main server A which I want to download from my local computer B and the file X is downloadable through HTTP. But, for some reason I am not allowed to download file from the main server A. However, I have an access to another server C which has PHP installed. I now want to download the file X via the server C by calling some PHP script on server C from my local computer B.

Is it possible to write one PHP script to do the above?

Any help in writing so will be highly appreciated.

Answer 1

I'm not completely sure of what you need but you can use the following script to act as proxy between 2 servers.

PUT THIS FILE ON SERVER C

phpProxy.php

<?php
$myPass = "Secr3t";
if( $myPass == $_GET['pass'] ){
    $remoteFile = $_GET['rf'];
    $filename = basename( $remoteFile );
    header("Content-Type: application/octet-stream");
    header("Content-Disposition: attachment; filename=\"$filename\"");
    echo file_get_contents( $remoteFile );
}

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USE AS:

phpProxy.php?rf=http://phs.googlecode.com/files/Download%20File%20Test.zip&pass=Secr3t

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NOTES:
1 - I've added a password otherwise the script is very unsafe!
2 - If possible, use https to avoid MITM