org.springframework.security.web.authentication.session.ChangeSessionIdAuthenticationStrategy 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.lang.reflect.Method;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.springframework.util.ReflectionUtils;
/**
* Uses {@code HttpServletRequest.changeSessionId()} to protect against session fixation
* attacks. This is the default implementation for Servlet 3.1+.
*
* @author Rob Winch
* @since 3.2
*/
public final class ChangeSessionIdAuthenticationStrategy
extends AbstractSessionFixationProtectionStrategy {
private final Method changeSessionIdMethod;
public ChangeSessionIdAuthenticationStrategy() {
Method changeSessionIdMethod = ReflectionUtils
.findMethod(HttpServletRequest.class, "changeSessionId");
if (changeSessionIdMethod == null) {
throw new IllegalStateException(
"HttpServletRequest.changeSessionId is undefined. Are you using a Servlet 3.1+ environment?");
}
this.changeSessionIdMethod = changeSessionIdMethod;
}
/*
* (non-Javadoc)
*
* @see org.springframework.security.web.authentication.session.
* AbstractSessionFixationProtectionStrategy
* #applySessionFixation(javax.servlet.http.HttpServletRequest)
*/
@Override
HttpSession applySessionFixation(HttpServletRequest request) {
ReflectionUtils.invokeMethod(this.changeSessionIdMethod, request);
return request.getSession();
}
}