Looking for SFTP Server in Embedded Environment

Question

I have an embedded environment with a limited amount of storage available. I want to run an SFTP server in this environment and the Linux version I'm using does not contain one.

Does anyone know of a set of c-libraries for a Linux SFTP server that is lightweight? (ie. the binary is small in size, much less than 1MB)

NOTE: The libraries would need to be cross-compileable.

Answer 1

You could run ftpd wrapped in OpenSSH.

Answer 2

OpenSSH contains an SFTP service. The server package comes to about half a megabyte here (compiled for i386, dynamically linked):

$ ls -sh /etc/ssh/sshd_config /usr/sbin/sshd /usr/libexec/openssh/sftp-server 
8.0K /etc/ssh/sshd_config              468K /usr/sbin/sshd
 64K /usr/libexec/openssh/sftp-server

Answer 3

The dropbear SSH implementation is meant for embedded use, and might be of use for you.

Answer 4

You can try dropbear with Green End SFTP Server. http://matt.ucc.asn.au/dropbear/dropbear.html http://www.greenend.org.uk/rjk/sftpserver/