Somebody asked for this and there is a pull-request which contains code that somehow was rewritten before it got merged and somebody managed to code a solution based on the pull-request. However, there is no example for the final version in that library.
Therefore, that doesn't really help me with my limited understanding of ssh and all. Basically there are two scenarios I want to solve:
common SSH-session via some jump-hosts:
- user1@jump1.com
- user2@jump2.com
- user3@jump3.com
- admin@server.com
ending in an ssh-session where the connecting user is free to work around in that ssh-shell at server.com, i.e. what a normal
ssh admin@server.com-command would do in the shell on jump3.com.like the above but ending in a port forwarding to server.com:80
That is possible with ssh's ProxyCommand, but I want to code this with SSHJ. And that's where I fail to figure out how to do this.
What I have now is
SSHClient hop1 = new SSHClient();
try {
Path knownHosts = rootConfig.getKnownHosts();
if (knownHosts != null) {
hop1.loadKnownHosts(knownHosts.toFile());
} else {
hop1.loadKnownHosts();
}
Path authenticationFile = hop1Config.getAuthenticationFile();
if (authenticationFile != null) {
KeyProvider keyProvider = hop1.loadKeys(authenticationFile.toString(), (String) null);
hop1.authPublickey(hop1Config.getUser(), keyProvider);
} else {
hop1.authPassword(hop1Config.getUser(), hop1Config.getPassword());
}
// I found these methods:
hop1.getConnection();
hop1.getSocket();
// and now what?
} catch (IOException e) {
logger.error("Failed to open ssh-connection to {}", hop1Config, e);
}
I noticed class LocalPortForwarder.DirectTCPIPChannel, but I don't know with what values I should instantiate it or how to use it with the rest afterwards.
