Ssh – Openssh sftp-server: .filepart support

file-transfersftpssh

I am trying to setup a SFTP server, running off Ubuntu Server 11.04. I installed openssh-server to provide SSH access. What I am trying to do is make file uploads run with a suffix (.filepart or whatever), which would be removed upon transfer completion.

The flow idea is:

  1. User uploads cat.jpg
  2. The server starts writing cat.jpg.filepart in the destination directory
  3. Once the upload completes, the server trashes the previous cat.jpg (if any) and renames cat.jpg.filepart to cat.jpg

This is to make sure that incomplete file uploads do not overwrite the existing files. Any idea on how I can do this?

Thanks

Best Answer

ProFTPD can support SFTP via the mod_sftp module, and can do just what you describe with its HiddenStores directive; this functionality is supported for both FTP and SFTP uploads.

Full disclosure: I'm the author of ProFTPD and mod_sftp.

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