Package org.apache.sshd.client.auth

Interface UserAuth

All Superinterfaces:

ClientSessionHolder, NamedResource, UserAuthInstance<ClientSession>

All Known Implementing Classes:

AbstractUserAuth, UserAuthHostBased, UserAuthKeyboardInteractive, UserAuthPassword, UserAuthPublicKey

public interface UserAuth
extends ClientSessionHolder, UserAuthInstance<ClientSession>

Represents a user authentication mechanism

Author:

Apache MINA SSHD Project

Field Summary

Fields inherited from interface org.apache.sshd.common.NamedResource

BY_NAME_COMPARATOR, NAME_EXTRACTOR

Method Summary

Modifier and Type	Method	Description
void	destroy()	Called to release any allocated resources
void	init(ClientSession session, String service)
default boolean	isCancellable()	Tells whether the authentication protocol is cancellable currently.
boolean	process(Buffer buffer)
default void	signalAuthMethodFailure(ClientSession session, String service, boolean partial, List<String> serverMethods, Buffer buffer)	Signals reception of SSH_MSG_USERAUTH_FAILURE message
default void	signalAuthMethodSuccess(ClientSession session, String service, Buffer buffer)	Signal reception of SSH_MSG_USERAUTH_SUCCESS message

Methods inherited from interface org.apache.sshd.client.session.ClientSessionHolder

getClientSession

Methods inherited from interface org.apache.sshd.common.NamedResource

getName

Methods inherited from interface org.apache.sshd.common.auth.UserAuthInstance

getSession

Method Details

init

void init(ClientSession session,
 String service)
   throws Exception

Parameters:

session - The ClientSession

service - The requesting service name

Throws:

Exception - If failed to initialize the mechanism

process

boolean process(Buffer buffer)
         throws Exception

Parameters:

buffer - The Buffer to process - null if not a response buffer, i.e., the underlying authentication mechanism should initiate whatever challenge/response mechanism is required

Returns:

true if request handled - false if the next authentication mechanism should be used

Throws:

Exception - If failed to process the request

signalAuthMethodSuccess

default void signalAuthMethodSuccess(ClientSession session,
 String service,
 Buffer buffer)
                              throws Exception

Signal reception of SSH_MSG_USERAUTH_SUCCESS message

Parameters:

session - The ClientSession

service - The requesting service name

buffer - The Buffer containing the success message (after having consumed the relevant data from it)

Throws:

Exception - If failed to handle the callback - Note: may cause session close

signalAuthMethodFailure

default void signalAuthMethodFailure(ClientSession session,
 String service,
 boolean partial,
 List<String> serverMethods,
 Buffer buffer)
                              throws Exception

Signals reception of SSH_MSG_USERAUTH_FAILURE message

Parameters:

session - The ClientSession

service - The requesting service name

partial - true if some partial authentication success so far

serverMethods - The List of authentication methods that can continue

buffer - The Buffer containing the failure message (after having consumed the relevant data from it)

Throws:

Exception - If failed to handle the callback - Note: may cause session close

isCancellable

default boolean isCancellable()

Tells whether the authentication protocol is cancellable currently.

Returns:

true if the protocol can be canceled at its current state; false if not.

destroy

void destroy()

Called to release any allocated resources