com.maverick.sshd

Class NoneAuthentication

java.lang.Object

com.maverick.sshd.NoneAuthentication

All Implemented Interfaces:

AuthenticationMechanism

public class NoneAuthentication
extends Object
implements AuthenticationMechanism

This authentication mechanism can be used to send custom banner messages to the client. When an SSH client connects it sends a 'none' authentication request with the username of the connecting user, normally the Maverick SSHD will send the default banner message configured in the ConfigurationContext.

However you can extend this class and override the getBannerForUser method to return a banner message for a specific user. To configure the SSHD to use your class instead of the default behaviour add it to the supported authentication mechanisms in your SshDaemon.configure method. Also make sure that no banner is configured in the SshContext.

context.supportedAuthenticationMechanisms().add("none", MyNoneAuthentication.class);

Author:

Lee David Painter

Constructor Summary

Constructors

Constructor and Description
NoneAuthentication()
NoneAuthentication(TransportProtocol transport, AuthenticationProtocol auth)

Method Summary

Modifier and Type	Method and Description
String	getBannerForUser(String username) Override this method to send user customized banners, if this method is overridden then com.maverick.sshd.SshContext.setBannerMessage(null) should be set to null.
String	getMethod() Return the SSH method name for this authentication.
void	init(TransportProtocol transport, AuthenticationProtocol authentication) Initializes the mechanism with variables.
boolean	processMessage(byte[] msg) If the SSH protocol authentication method defines additional messages which are sent from the client, they will be passed into your implementation here when received.
boolean	startRequest(String username, byte[] msg) Start an authentication transaction.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NoneAuthentication

public NoneAuthentication()

NoneAuthentication

public NoneAuthentication(TransportProtocol transport,
                          AuthenticationProtocol auth)

Method Detail

getMethod

public final String getMethod()

Return the SSH method name for this authentication.

Specified by:

getMethod in interface AuthenticationMechanism

Returns:

String

init

public final void init(TransportProtocol transport,
                       AuthenticationProtocol authentication)
                throws IOException

Initializes the mechanism with variables.

Parameters:

transport - the transport protocol

authentication - the authentication protocol

sessionid - the id of the current session.

Throws:

IOException

processMessage

public final boolean processMessage(byte[] msg)
                             throws IOException

If the SSH protocol authentication method defines additional messages which are sent from the client, they will be passed into your implementation here when received.

Specified by:

processMessage in interface AuthenticationMechanism

Parameters:

msg - byte[]

Returns:

boolean

Throws:

IOException

getBannerForUser

public String getBannerForUser(String username)

Override this method to send user customized banners, if this method is overridden then com.maverick.sshd.SshContext.setBannerMessage(null) should be set to null.

Parameters:

username -

Returns:

startRequest

public final boolean startRequest(String username,
                                  byte[] msg)
                           throws IOException

Start an authentication transaction.

Specified by:

startRequest in interface AuthenticationMechanism

Parameters:

username - String

msg - the request data from the SSH_MSG_USERAUTH_REQUEST message

Returns:

true if the message was processed, otherwise false

Throws:

IOException