org.springframework.security.authentication.rcp

Class RemoteAuthenticationProvider

java.lang.Object

org.springframework.security.authentication.rcp.RemoteAuthenticationProvider

All Implemented Interfaces:

InitializingBean, AuthenticationProvider

public class RemoteAuthenticationProvider
extends Object
implements AuthenticationProvider, InitializingBean

Client-side object which queries a RemoteAuthenticationManager to validate an authentication request.

A new Authentication object is created by this class comprising the request Authentication object's principal, credentials and the GrantedAuthority[]s returned by the RemoteAuthenticationManager.

The RemoteAuthenticationManager should not require any special username or password setting on the remoting client proxy factory to execute the call. Instead the entire authentication request must be encapsulated solely within the Authentication request object. In practical terms this means the RemoteAuthenticationManager will not be protected by BASIC or any other HTTP-level authentication.

If authentication fails, a RemoteAuthenticationException will be thrown. This exception should be caught and displayed to the user, enabling them to retry with alternative credentials etc.

Author:

Ben Alex

Constructor Summary

Constructors

Constructor and Description
RemoteAuthenticationProvider()

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet()
Authentication	authenticate(Authentication authentication) Performs authentication with the same contract as AuthenticationManager.authenticate(Authentication) .
RemoteAuthenticationManager	getRemoteAuthenticationManager()
void	setRemoteAuthenticationManager(RemoteAuthenticationManager remoteAuthenticationManager)
boolean	supports(Class<?> authentication) Returns true if this AuthenticationProvider supports the indicated Authentication object.

Methods inherited from class java.lang.Object

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

Constructor Detail

RemoteAuthenticationProvider

public RemoteAuthenticationProvider()

Method Detail

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Specified by:

afterPropertiesSet in interface InitializingBean

Throws:

Exception

authenticate

public Authentication authenticate(Authentication authentication)
                            throws AuthenticationException

Description copied from interface: AuthenticationProvider

Performs authentication with the same contract as AuthenticationManager.authenticate(Authentication) .

Specified by:

authenticate in interface AuthenticationProvider

Parameters:

authentication - the authentication request object.

Returns:

a fully authenticated object including credentials. May return null if the AuthenticationProvider is unable to support authentication of the passed Authentication object. In such a case, the next AuthenticationProvider that supports the presented Authentication class will be tried.

Throws:

AuthenticationException - if authentication fails.

getRemoteAuthenticationManager

public RemoteAuthenticationManager getRemoteAuthenticationManager()

setRemoteAuthenticationManager

public void setRemoteAuthenticationManager(RemoteAuthenticationManager remoteAuthenticationManager)

supports

public boolean supports(Class<?> authentication)

Description copied from interface: AuthenticationProvider

Returns true if this AuthenticationProvider supports the indicated Authentication object.

Returning true does not guarantee an AuthenticationProvider will be able to authenticate the presented instance of the Authentication class. It simply indicates it can support closer evaluation of it. An AuthenticationProvider can still return null from the AuthenticationProvider.authenticate(Authentication) method to indicate another AuthenticationProvider should be tried.

Selection of an AuthenticationProvider capable of performing authentication is conducted at runtime the ProviderManager.

Specified by:

supports in interface AuthenticationProvider

Returns:

true if the implementation can more closely evaluate the Authentication class presented