package net.schmizz.sshj.examples;
import net.schmizz.sshj.SSHClient;
import net.schmizz.sshj.common.StreamCopier;
import net.schmizz.sshj.connection.channel.direct.Session;
import net.schmizz.sshj.connection.channel.direct.Session.Shell;
import net.schmizz.sshj.transport.verification.ConsoleKnownHostsVerifier;
import net.schmizz.sshj.transport.verification.OpenSSHKnownHosts;
import java.io.File;
import java.io.IOException;
import net.schmizz.sshj.common.LoggerFactory;
/** A very rudimentary psuedo-terminal based on console I/O. */
class RudimentaryPTY {
public static void main(String... args)
throws IOException {
final SSHClient ssh = new SSHClient();
final File khFile = new File(OpenSSHKnownHosts.detectSSHDir(), "known_hosts");
ssh.addHostKeyVerifier(new ConsoleKnownHostsVerifier(khFile, System.console()));
ssh.connect("localhost");
try {
ssh.authPublickey(System.getProperty("user.name"));
final Session session = ssh.startSession();
try {
session.allocateDefaultPTY();
final Shell shell = session.startShell();
new StreamCopier(shell.getInputStream(), System.out, LoggerFactory.DEFAULT)
.bufSize(shell.getLocalMaxPacketSize())
.spawn("stdout");
new StreamCopier(shell.getErrorStream(), System.err, LoggerFactory.DEFAULT)
.bufSize(shell.getLocalMaxPacketSize())
.spawn("stderr");
// Now make System.in act as stdin. To exit, hit Ctrl+D (since that results in an EOF on System.in)
// This is kinda messy because java only allows console input after you hit return
// But this is just an example... a GUI app could implement a proper PTY
new StreamCopier(System.in, shell.getOutputStream(), LoggerFactory.DEFAULT)
.bufSize(shell.getRemoteMaxPacketSize())
.copy();
} finally {
session.close();
}
} finally {
ssh.disconnect();
}
}
}