I provide a public FTP account for people to upload files into a temporary folder. An AJAX interface shows fresh files, then users can tag and move the file into a different folder.
I would like to show every user just the files they uploaded themselves, not all the other ones that might be uploaded at the same time by other people. Individual FTP accounts are no option.
Is there a way to connect the logged-in user and the FTP-upload by IP address? Can I find out the uploader IP for any given file using PHP?
You can’t easily find the IP address data for previous FTP uploads if you didn’t capture it at the time. Going forward you could certainly record this BUT:
1) only if your FTP server permits it
2) it’ll probably write it to the log which you’ll need to parse then compare with the actual files (not trivial)
3) the fundamental approach is flawed – unless you’ve only got users connecting via a local area network, there is no requirement that the client address for the FTP connection is the same as the client connection for the HTTP connection. (e.g. HTTP connection might go through a proxy, FTP connection direct).
A slightly better approach would be to use usernames rather than IP addresses (although you still have problems 1 and 2 to contend with).
Better yet, scrap the FTP and do the uploads using HTTP.
C.