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One-time use files/links

 
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Old 01-08-2007
Question One-time use files/links
Im in the process of developing a content based website in which people will be able to upload movies(which are then converted to flv format and displayed in a flash based player.) In order to protect the submitted content I would like to setup an offsite folder for the videos and create symbolic/hard links to the files only when in use.

My question:
Is there a way to create a file, symbolic link, hard link... that destroys itself after it has been used?

(In other words I want the script to create this file then once the player initiates the download I want all further attempts to download the video to be rejected. In other words the file can only be accessed via the given video script.)

Site information that might be important:
PHP 4
MySQL
ffmpeg is used to convert the submitted video
Debian GNU/Linux
I do NOT have root access on the server(I was able to get ffmpeg to install to a local directory)
 
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LEARN ABOUT DEBIAN

gravitation

gravitation(6)							       Games							    gravitation(6)

NAME

       gravitation - a game about mania, melancholia, and the creative process.

SYNOPSIS

       gravitation

DESCRIPTION

       Gravitation is a video game written by Jason Rohrer about the creative process and the interaction between the creative process and life.

       Gravitation  is	an art game. As a result, some people love it and some people hate it. Check out the links to places it has been discussed
       on the website for some of the reactions.

       The mechanics of the game are fairly simple. Your "score" is related to the amount of "projects" you complete. To complete a project, first
       you need to discover and idea. In the game ideas are represented by blue stars and located in the maze above your initial position.  To get
       to the maze, you can either wait till you feel inspired to jump that far, or you can play with your daughter and be inspired more  quickly.
       Once  you  find	an idea, it will fall to earth (so to speak), and you now need to "complete" the project by pushing the fallen star (now a
       white cube) into the fireplace. The game mechanics allow for myriad situations and exploring them can be an interesting experience.

       The most interesting part about this game is the emotions it evokes within the player of the game. The ultra-low-res pixel art helps  here,
       by not being too distracting and by leaving plenty room for viewer interpretation.

       Gravitation is the follow-up to Passage, another art game by Jason Rohrer.

USAGE

       Gravitation has no command-line options.

       The left and right arrow keys move left and right.

       The spacebar is used to jump. Hold for higher jumps.

       The Esc key is used to quit the game.

       The game resolution and use of fullscreen or a window can be set by editing the files in /etc/gravitation.

SEE ALSO

       The website and discussion: http://hcsoftware.sourceforge.net/gravitation/

       The game creators statement: http://hcsoftware.sourceforge.net/gravitation/statement.html

								    March 2008							    gravitation(6)