/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.authentication;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.MessageSource;
import org.springframework.context.MessageSourceAware;
import org.springframework.context.support.MessageSourceAccessor;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.SpringSecurityMessageSource;
import org.springframework.util.Assert;
/**
* An {@link AuthenticationProvider} implementation that validates {@link AnonymousAuthenticationToken}s.
* <p>
* To be successfully validated, the {@link AnonymousAuthenticationToken#getKeyHash()} must match this class'
* {@link #getKey()}.
*
* @author Ben Alex
*/
public class AnonymousAuthenticationProvider implements AuthenticationProvider, InitializingBean, MessageSourceAware {
//~ Instance fields ================================================================================================
protected MessageSourceAccessor messages = SpringSecurityMessageSource.getAccessor();
private String key;
/**
*
* @deprecated Use constructor injection
*/
@Deprecated
public AnonymousAuthenticationProvider() {
}
public AnonymousAuthenticationProvider(String key) {
this.key = key;
}
//~ Methods ========================================================================================================
public void afterPropertiesSet() throws Exception {
Assert.hasLength(key, "A Key is required");
}
public Authentication authenticate(Authentication authentication)
throws AuthenticationException {
if (!supports(authentication.getClass())) {
return null;
}
if (this.key.hashCode() != ((AnonymousAuthenticationToken) authentication).getKeyHash()) {
throw new BadCredentialsException(messages.getMessage("AnonymousAuthenticationProvider.incorrectKey",
"The presented AnonymousAuthenticationToken does not contain the expected key"));
}
return authentication;
}
public String getKey() {
return key;
}
/**
*
* @deprecated Use constructor injection
*/
@Deprecated
public void setKey(String key) {
this.key = key;
}
public void setMessageSource(MessageSource messageSource) {
Assert.notNull(messageSource, "messageSource cannot be null");
this.messages = new MessageSourceAccessor(messageSource);
}
public boolean supports(Class<?> authentication) {
return (AnonymousAuthenticationToken.class.isAssignableFrom(authentication));
}
}