org.springframework.security.web.authentication.session.CompositeSessionAuthenticationStrategy Maven / Gradle / Ivy
/*
* Copyright 2002-2013 the original author or authors.
*
* 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.web.authentication.session;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.security.core.Authentication;
import org.springframework.util.Assert;
/**
* A {@link SessionAuthenticationStrategy} that accepts multiple
* {@link SessionAuthenticationStrategy} implementations to delegate to. Each
* {@link SessionAuthenticationStrategy} is invoked in turn. The invocations are short
* circuited if any exception, (i.e. SessionAuthenticationException) is thrown.
*
*
* Typical usage would include having the following delegates (in this order)
*
*
*
* - {@link ConcurrentSessionControlAuthenticationStrategy} - verifies that a user is
* allowed to authenticate (i.e. they have not already logged into the application.
* - {@link SessionFixationProtectionStrategy} - If session fixation is desired,
* {@link SessionFixationProtectionStrategy} should be after
* {@link ConcurrentSessionControlAuthenticationStrategy} to prevent unnecessary
* {@link HttpSession} creation if the
* {@link ConcurrentSessionControlAuthenticationStrategy} rejects authentication.
* - {@link RegisterSessionAuthenticationStrategy} - It is important this is after
* {@link SessionFixationProtectionStrategy} so that the correct session is registered.
*
*
*
* @author Rob Winch
* @since 3.2
*/
public class CompositeSessionAuthenticationStrategy
implements SessionAuthenticationStrategy {
private final Log logger = LogFactory.getLog(getClass());
private final List delegateStrategies;
public CompositeSessionAuthenticationStrategy(
List delegateStrategies) {
Assert.notEmpty(delegateStrategies, "delegateStrategies cannot be null or empty");
for (SessionAuthenticationStrategy strategy : delegateStrategies) {
if (strategy == null) {
throw new IllegalArgumentException(
"delegateStrategies cannot contain null entires. Got "
+ delegateStrategies);
}
}
this.delegateStrategies = delegateStrategies;
}
/*
* (non-Javadoc)
*
* @see org.springframework.security.web.authentication.session.
* SessionAuthenticationStrategy
* #onAuthentication(org.springframework.security.core.Authentication,
* javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public void onAuthentication(Authentication authentication,
HttpServletRequest request, HttpServletResponse response)
throws SessionAuthenticationException {
for (SessionAuthenticationStrategy delegate : this.delegateStrategies) {
if (this.logger.isDebugEnabled()) {
this.logger.debug("Delegating to " + delegate);
}
delegate.onAuthentication(authentication, request, response);
}
}
@Override
public String toString() {
return getClass().getName() + " [delegateStrategies = " + this.delegateStrategies
+ "]";
}
}