maven-wagon-ssh-sftp

Apache Maven Wagon implementation using strictly sftp utility

This project is solving the same issue as existing Apache Maven Wagon ssh-external but it supports following sshd configuration (which ssh-external, at the time of writing this readme, does not):

Match group maven
    ChrootDirectory /path/to/repo/
    X11Forwarding no
    AllowTcpForwarding no
    AllowAgentForwarding no
    ForceCommand internal-sftp

Official ssh-external uses scp utility to upload files and then ssh to change ownership of uploaded files. But,

• ssh command cannot be used because of ForceCommand internal-sftp which forbids anything else than sftp.
• scp utility requires OpenSSH version >= 9.x to work with ForceCommand internal-sftp which causes issues with older clients

Thus, my implementation simply relies only on /usr/bin/sftp, which works with mentioned ForceCommand internal-sftp.

I invite developers of ssh-external to merge or otherwise use this idea or my source code in official ssh-external project.

More info about the issue described is also published here:
https://serverfault.com/questions/420457/openssh-anything-like-internal-sftp-but-for-scp

Disclaimer, this code:

• is only tested in my own environment
• it needs a little bit of work to be usable on Windows
• it comes without any unit tests