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/*
* SSHTools - Java SSH2 API
*
* Copyright (C) 2002-2003 Lee David Painter and Contributors.
*
* Contributions made by:
*
* Brett Smith
* Richard Pernavas
* Erwin Bolwidt
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import com.sshtools.j2ssh.SshClient;
import com.sshtools.j2ssh.authentication.AuthenticationProtocolState;
import com.sshtools.j2ssh.authentication.PublicKeyAuthenticationClient;
import com.sshtools.j2ssh.io.IOStreamConnector;
import com.sshtools.j2ssh.io.IOStreamConnectorState;
import com.sshtools.j2ssh.session.SessionChannelClient;
import com.sshtools.j2ssh.transport.publickey.SshPrivateKey;
import com.sshtools.j2ssh.transport.publickey.SshPrivateKeyFile;
import com.sshtools.j2ssh.configuration.ConfigurationLoader;
/*import java.util.logging.FileHandler;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;*/
/**
* Demonstrates a public key authentication connection to an SSH server.
*
* @author <A HREF="mailto:lee@sshtools.com">Lee David Painter</A>
* @version $Id: PublicKeyConnect.java,v 1.8 2003/07/16 10:42:08 t_magicthize Exp $
*
* @created 20 December 2002
*/
public class PublicKeyConnect {
/**
* The main program for the PublicKeyConnect class
*
* @param args The command line arguments
*/
public static void main(String args[]) {
try {
// Setup a logfile
/*Handler fh = new FileHandler("example.log");
fh.setFormatter(new SimpleFormatter());
Logger.getLogger("com.sshtools").setUseParentHandlers(false);
Logger.getLogger("com.sshtools").addHandler(fh);
Logger.getLogger("com.sshtools").setLevel(Level.ALL);*/
// Configure J2SSH (This will attempt to install the bouncycastle provider
// under jdk 1.3.1)
ConfigurationLoader.initialize(false);
BufferedReader reader =
new BufferedReader(new InputStreamReader(System.in));
System.out.print("Connect to host? ");
String hostname = reader.readLine();
// Make a client connection
SshClient ssh = new SshClient();
// Connect to the host
ssh.connect(hostname);
PublicKeyAuthenticationClient pk = new PublicKeyAuthenticationClient();
// Get the users name
System.out.print("Username? ");
String username = reader.readLine();
pk.setUsername(username);
// Get the private key file
System.out.print("Path to private key file? ");
String filename = reader.readLine();
// Open up the private key file
SshPrivateKeyFile file =
SshPrivateKeyFile.parse(new File(filename));
// If the private key is passphrase protected then ask for the passphrase
String passphrase = null;
if (file.isPassphraseProtected()) {
System.out.print("Enter passphrase? ");
passphrase = reader.readLine();
}
// Get the key
SshPrivateKey key = file.toPrivateKey(passphrase);
pk.setKey(key);
// Try the authentication
int result = ssh.authenticate(pk);
// Evaluate the result
if (result == AuthenticationProtocolState.COMPLETE) {
// The connection is authenticated we can now do some real work!
SessionChannelClient session = ssh.openSessionChannel();
if(!session.requestPseudoTerminal("vt100", 80, 24, 0, 0, ""))
System.out.println("Failed to allocate a pseudo terminal");
if(session.startShell()) {
InputStream in = session.getInputStream();
OutputStream out = session.getOutputStream();
IOStreamConnector input =
new IOStreamConnector(System.in, session.getOutputStream());
IOStreamConnector output =
new IOStreamConnector(session.getInputStream(), System.out);
output.getState().waitForState(IOStreamConnectorState.CLOSED);
} else
System.out.println("Failed to start the users shell");
ssh.disconnect();
}
if (result == AuthenticationProtocolState.PARTIAL) {
System.out.println("Further authentication requried!");
}
if (result == AuthenticationProtocolState.FAILED) {
System.out.println("Authentication failed!");
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
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