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Answer 1

A:

Can't you send them an FTP link ? Why do you need PHP?

ftp://ftp12.freebsd.org/pub/FreeBSD/ls-lR.gz

Byron Whitlock 2010-10-20 19:01:51

The files need to be protected, so clients can't download files from others. With a direct ftp link it is also possible to download other files on the server.

Jaap 2010-10-20 19:07:48

Answer 2

A:

You can generate unique address based on session_id (create this folder on runtime and move huge file there) and redirect user to this link For example, you have file huge.tgz

1. Send you client link http://***/user/john/file/huge.tgz
2. Ask user for auth in this page if they lost session
3. get session id
4. create on your server folder with name equals session id and move huge.tgz here
5. redirect user to unique ftp link ftp://***/17oe5kf8iYmpt66bjs89hcuo83/huge.tgz

You should disallow list files and directories on ftp server

ifrond 2010-10-20 19:27:16

hmm, how long does it take to move a file to a unique location? And how can you redirect the user to a ftp location? By header('Location: ftp://.....'); ? And the user has the possibility to download the file more than once.

Jaap 2010-10-20 19:34:56

if the file is on the same server and partition - less then a second. And yes with php header function or javascript location.href

ifrond 2010-10-20 19:36:49

If you don't want to move file. You can copy it. It takes some minutes. By ajax request server if file is ready (size of file in unique dir equals size on original file) and than redirect by javascript

ifrond 2010-10-20 19:43:03

The only thing I have to do is deleting files when they are downloaded or isn't downloaded anyway. Hmm, the files has to be ready when the user opens the link, so copying a file isn't the solution I'm afraid.

Jaap 2010-10-20 19:44:57

Answer 3

A:

You probably want to use PHP to handle everything but the file transfer. Once you have done all the checks you want you can redirect the browser to the file specifying the protocol as ftp. though you won't be able to have a progression bar in your site, the browser/ftp app will probably display one.

araf3l 2010-10-20 19:36:15

But in your case users can be download other files on the server when they know the filename, right? Is it better to connect to the ftp server using php?

Jaap 2010-10-20 19:40:29

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Download file using FTP and PHP

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