application that track ftpclient requests and runs in background of ftpserver

[dkautilya]

hi all,

my problem is to traping the requested filename when any ftpclient request to upload the file before the file is uploaded to the server and to check wether any file with the same name as the requested file exist over requested location if yes then the request file to upload should be renamed and save with different name on ftpserver. this application shoud run in backgroun on ftpserver and no interaction with user has to be given.