[xwiki-users] Send something by FTP in a space

Hi, I should want use XWiki as a platform to distribute java web start applications. I want some acces control : only register persons can get the jnlp and jar file. I put the jars on the server by FTP with an ant task. I edit the jnlp file on the server with vim (or KEdit, if the X server is ok). I don't want use the internal stuff in XWiki to edit or install these files, I use xwiki only to control the acces and to make a presentation page (ex : "Please clic here (here), it's my very good java application") of the product. How is it possible to get the FTP transfert inside a xwiki context ? Thanks.