Uploading a file via website to SFTP server

Question

I'm building a website. I have the SFTP login credentials for the server.

I'm trying to make it so that a user can select a file on their hard-drive, and upload the file to a remote computer through SFTP.

Is this possible? How would I do this?

Answer 1

I assume you use (or can use) PHP. You didn't specify, what technology you are using.

Start with reading:

• POST method uploads - for transferring a file from the client's machine to your website
• PHP SFTP Simple File Upload or How do i use phpseclib to upload file from my php server -> someOther server? - for transferring a file from your website to the SFTP

That combined together gets you a code like:

include('Net/SFTP.php');

$uploaded_file = $_FILES["attachment"]["tmp_name"];

$sftp = new Net_SFTP("example.com");
if (!$sftp->login('username', 'password'))
{
    die("Connection failed");
}

$sftp->put(
    "/remote/path/".$_FILES["attachment"]["name"],
    file_get_contents($uploaded_file));

This is a very simplified code, lacking lots of validation and error checking.

The code uses the phpseclib library.