I'm looking for a script (preferably php) which I can use for to temporarily exchange files. I had such a script before (it was written in flash), but - damn - just can't find it anymore. Here the features I'm looking for:

• I have a logon, which allows me to create "upload spaces".
• for these "upload spaces" I define a time how long the space will be available for (until the files are deleted), and who can access it - in the means of typing in an email, and that user gets a link with the "online space", user ID and password.
• the other user then clicks on the link and uploads the file, and I get (preferably) an email should there be any file changes
• I get an email before the content gets deleted

Now, 3 additional things: - it should be open- source - run on linux (preferably lamp) - no, I dont wanna use dropbox or similar :p

Thanks in advance everybody, Cheers Chris