C:/work/OMMR/OCHHP_OMMR_OMMR/Code/Assemblies/SharpSSH/Source/SharpSSH-1.1.1.13.src/Examples/jsch_samples/KnownHosts.cs

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using System;
using System.IO;
using System.Windows.Forms;
using Tamir.SharpSsh.jsch;

/* KnownHosts.cs
 * ====================================================================
 * The following example was posted with the original JSch java library,
 * and is translated to C# to show the usage of SharpSSH JSch API
 * ====================================================================
 * */
namespace sharpSshTest.jsch_samples
{
        public class KnownHosts
        {
                public static void RunExample(String[] arg)
                {
                        try
                        {
                                //Get the "known hosts" filename from the user
                                Console.WriteLine("Please select your 'known_hosts' from the poup window...");
                                String file = InputForm.GetFileFromUser("Choose your known_hosts(ex. ~/.ssh/known_hosts)");
                                Console.WriteLine("You chose "+file+".");
                                //Create a new JSch instance
                                JSch jsch=new JSch();
                                //Set the known hosts file
                                jsch.setKnownHosts(file);                               

                                //Get the KnownHosts repository from JSchs
                                HostKeyRepository hkr=jsch.getHostKeyRepository();

                                //Print all known hosts and keys
                                HostKey[] hks=hkr.getHostKey();
                                HostKey hk;
                                if(hks!=null)
                                {
                                        Console.WriteLine();
                                        Console.WriteLine("Host keys in "+hkr.getKnownHostsRepositoryID()+":");
                                        for(int i=0; i<hks.Length; i++)
                                        {
                                                hk=hks[i];
                                                Console.WriteLine(hk.getHost()+" "+
                                                        hk.getType()+" "+
                                                        hk.getFingerPrint(jsch));
                                        }
                                        Console.WriteLine("");
                                }

                                //Now connect to the remote server...

                                //Prompt for username and server host
                                Console.WriteLine("Please enter the user and host info at the popup window...");
                                String host = InputForm.GetUserInput
                                        ("Enter username@hostname",
                                        Environment.UserName+"@localhost");
                                String user=host.Substring(0, host.IndexOf('@'));
                                host=host.Substring(host.IndexOf('@')+1);

                                //Create a new SSH session
                                Session session=jsch.getSession(user, host, 22);

                                // username and password will be given via UserInfo interface.
                                UserInfo ui=new MyUserInfo();
                                session.setUserInfo(ui);

                                //Connect to remote SSH server
                                session.connect();

                                //Print the host key info
                                //of the connected server:
                                hk=session.getHostKey();
                                Console.WriteLine("HostKey: "+
                                        hk.getHost()+" "+
                                        hk.getType()+" "+
                                        hk.getFingerPrint(jsch));
                        
                                //Open a new Shell channel on the SSH session
                                Channel channel=session.openChannel("shell");

                                //Redirect standard I/O to the SSH channel
                                channel.setInputStream(Console.OpenStandardInput());
                                channel.setOutputStream(Console.OpenStandardOutput());

                                //Connect the channel
                                channel.connect();

                                Console.WriteLine("-- Shell channel is connected using the {0} cipher", 
                                        session.getCipher());

                                //Wait till channel is closed
                                while(!channel.isClosed())
                                {
                                        System.Threading.Thread.Sleep(500);
                                }

                                //Disconnect from remote server
                                channel.disconnect();
                                session.disconnect();
                        }
                        catch(Exception e)
                        {
                                Console.WriteLine(e.Message);
                        }
                }

                public class MyUserInfo : UserInfo
                {
                        private String passwd;

                        public String getPassword(){ return passwd; }

                        public bool promptYesNo(String str)
                        {
                                return InputForm.PromptYesNo(str);
                        }
                        
                        public String getPassphrase(){ return null; }

                        public bool promptPassphrase(String message){ return true; }

                        public bool promptPassword(String message)
                        {
                                passwd=InputForm.GetUserInput(message, true);
                                return true;
                        }

                        public void showMessage(String message)
                        {
                                InputForm.ShowMessage(message);
                        }
                }
        }
}

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