Java
Java
Continue SFTP Keyboard-Interactive Authentication
See more SFTP Examples
Demonstrates the Chilkat SFtp.ContinueKeyboardAuth method, which submits a response to a keyboard-interactive prompt. The only argument is the response text; for a request with multiple prompts, an XML response is supplied instead. It returns XML indicating the next prompt or the final result.
Background: This is the second half of the exchange started by
StartKeyboardAuth. A server may issue several rounds of prompts, so a robust client loops: submit answers, read the returned XML, and continue until it sees success or failure. On success, remember that InitializeSftp still must be called before any file operation.Chilkat Java Downloads
import com.chilkatsoft.*;
public class ChilkatExample {
static {
try {
System.loadLibrary("chilkat");
} catch (UnsatisfiedLinkError e) {
System.err.println("Native code library failed to load.\n" + e);
System.exit(1);
}
}
public static void main(String argv[])
{
boolean success = false;
// Demonstrates the SFtp.ContinueKeyboardAuth method, which submits a response to a
// keyboard-interactive prompt. The only argument is the response. For multiple prompts, an
// XML response is supplied instead.
CkSFtp sftp = new CkSFtp();
// Step 1: Connect the SSH transport. Port 22 is the usual port.
int port = 22;
success = sftp.Connect("sftp.example.com",port);
if (success == false) {
System.out.println(sftp.lastErrorText());
return;
}
// Begin keyboard-interactive authentication to receive the server's prompt(s).
String infoRequestXml = sftp.startKeyboardAuth("mySshLogin");
if (sftp.get_LastMethodSuccess() == false) {
System.out.println(sftp.lastErrorText());
return;
}
// Normally you would not hard-code the password in source. You should instead obtain it
// from an interactive prompt, environment variable, or a secrets vault.
String password = "mySshPassword";
// Submit the response (typically the password). The returned XML indicates the next prompt or
// the final result.
String result = sftp.continueKeyboardAuth(password);
if (sftp.get_LastMethodSuccess() == false) {
System.out.println(sftp.lastErrorText());
return;
}
System.out.println(result);
// On success, initialize the SFTP subsystem.
success = sftp.InitializeSftp();
if (success == false) {
System.out.println(sftp.lastErrorText());
return;
}
sftp.Disconnect();
}
}