/* -*-mode:java; c-basic-offset:2; -*- */
import com.jcraft.jsch.*;
import java.io.*;

public class KeyScan{
  public static void main(String[] arg){

    try{
      JSch jsch=new JSch();
      jsch.setKnownHosts("keyscan");

      String[] keytype={"ssh-rsa","ssh-dss"};
      String user="keyscan";
      java.util.Hashtable config=new java.util.Hashtable();
      for(int i=0; i<arg.length; i++){
	String host=arg[i];
	System.out.println(host);
	for(int j=0; j<keytype.length; j++){
	  try{
	    config.put("server_host_key", keytype[j]);
	    Session session=jsch.getSession(user, host, 22);
	    session.setConfig(config);
	    UserInfo ui=new MyUserInfo();
	    session.setUserInfo(ui);
	    session.setTimeout(1000);
	    session.connect(1000);
	  }
	  catch(JSchException ee){
	  }
	}
      }
    }
    catch(Exception e){
      System.out.println(e);
    }
  }

  public static class MyUserInfo implements UserInfo{
    public String getPassword(){ return ""; }
    public boolean promptYesNo(String str){ return true; }
    public String getPassphrase(){ return ""; }
    public boolean promptPassphrase(String message){ return false; }
    public boolean promptPassword(String message){ return false; }
    public void showMessage(String message){
    }
  }
}