"Bulletproof" SFTP upload

I run the IT for an elementary school district (kids 5-13 years old). I'd like to make changes to the source code so that when uploading files to an SFTP server there is an option to NEVER overwrite existing files. If this option were selected, upon encountering a file on the server with the same name as that being uploaded, the client would rename the file being uploaded (inserting "1", "2", "3" etc before the file extension) until there was no name collision.

My students have a tendency to trash the files on the server, and I'd like to make this impossible, yet make it easy (and secure) for them to upload.

I tried rebuilding from source, but being new to Borland C++ Builder, I can't get the compiler to generate libraries used for the build.

Peter Zingg
Technology Coordinator
Kentfield School District

Peter Zingg wrote:

I tried rebuilding from source, but being new to Borland C++ Builder, I can't get the compiler to generate libraries used for the build.

Have you compiled it according to "readme" file, using "makefile"?