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/*
* Copyright 2002-2022 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
*
* https://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.session;
import java.io.IOException;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.core.log.LogMessage;
import org.springframework.security.authentication.AuthenticationTrustResolver;
import org.springframework.security.authentication.AuthenticationTrustResolverImpl;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.context.SecurityContextHolderStrategy;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
import org.springframework.security.web.authentication.session.SessionAuthenticationException;
import org.springframework.security.web.authentication.session.SessionAuthenticationStrategy;
import org.springframework.security.web.authentication.session.SessionFixationProtectionStrategy;
import org.springframework.security.web.context.SecurityContextRepository;
import org.springframework.util.Assert;
import org.springframework.web.filter.GenericFilterBean;
/**
* Detects that a user has been authenticated since the start of the request and, if they
* have, calls the configured {@link SessionAuthenticationStrategy} to perform any
* session-related activity such as activating session-fixation protection mechanisms or
* checking for multiple concurrent logins.
*
* @author Martin Algesten
* @author Luke Taylor
* @since 2.0
*/
public class SessionManagementFilter extends GenericFilterBean {
static final String FILTER_APPLIED = "__spring_security_session_mgmt_filter_applied";
private SecurityContextHolderStrategy securityContextHolderStrategy = SecurityContextHolder
.getContextHolderStrategy();
private final SecurityContextRepository securityContextRepository;
private SessionAuthenticationStrategy sessionAuthenticationStrategy;
private AuthenticationTrustResolver trustResolver = new AuthenticationTrustResolverImpl();
private InvalidSessionStrategy invalidSessionStrategy = null;
private AuthenticationFailureHandler failureHandler = new SimpleUrlAuthenticationFailureHandler();
public SessionManagementFilter(SecurityContextRepository securityContextRepository) {
this(securityContextRepository, new SessionFixationProtectionStrategy());
}
public SessionManagementFilter(SecurityContextRepository securityContextRepository,
SessionAuthenticationStrategy sessionStrategy) {
Assert.notNull(securityContextRepository, "SecurityContextRepository cannot be null");
Assert.notNull(sessionStrategy, "SessionAuthenticationStrategy cannot be null");
this.securityContextRepository = securityContextRepository;
this.sessionAuthenticationStrategy = sessionStrategy;
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
doFilter((HttpServletRequest) request, (HttpServletResponse) response, chain);
}
private void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
throws IOException, ServletException {
if (request.getAttribute(FILTER_APPLIED) != null) {
chain.doFilter(request, response);
return;
}
request.setAttribute(FILTER_APPLIED, Boolean.TRUE);
if (!this.securityContextRepository.containsContext(request)) {
Authentication authentication = this.securityContextHolderStrategy.getContext().getAuthentication();
if (this.trustResolver.isAuthenticated(authentication)) {
// The user has been authenticated during the current request, so call the
// session strategy
try {
this.sessionAuthenticationStrategy.onAuthentication(authentication, request, response);
}
catch (SessionAuthenticationException ex) {
// The session strategy can reject the authentication
this.logger.debug("SessionAuthenticationStrategy rejected the authentication object", ex);
this.securityContextHolderStrategy.clearContext();
this.failureHandler.onAuthenticationFailure(request, response, ex);
return;
}
// Eagerly save the security context to make it available for any possible
// re-entrant requests which may occur before the current request
// completes. SEC-1396.
this.securityContextRepository.saveContext(this.securityContextHolderStrategy.getContext(), request,
response);
}
else {
// No security context or authentication present. Check for a session
// timeout
if (request.getRequestedSessionId() != null && !request.isRequestedSessionIdValid()) {
if (this.logger.isDebugEnabled()) {
this.logger.debug(LogMessage.format("Request requested invalid session id %s",
request.getRequestedSessionId()));
}
if (this.invalidSessionStrategy != null) {
this.invalidSessionStrategy.onInvalidSessionDetected(request, response);
return;
}
}
}
}
chain.doFilter(request, response);
}
/**
* Sets the strategy which will be invoked instead of allowing the filter chain to
* proceed, if the user agent requests an invalid session ID. If the property is not
* set, no action will be taken.
* @param invalidSessionStrategy the strategy to invoke. Typically a
* {@link SimpleRedirectInvalidSessionStrategy}.
*/
public void setInvalidSessionStrategy(InvalidSessionStrategy invalidSessionStrategy) {
this.invalidSessionStrategy = invalidSessionStrategy;
}
/**
* The handler which will be invoked if the AuthenticatedSessionStrategy
* raises a SessionAuthenticationException, indicating that the user is not
* allowed to be authenticated for this session (typically because they already have
* too many sessions open).
*
*/
public void setAuthenticationFailureHandler(AuthenticationFailureHandler failureHandler) {
Assert.notNull(failureHandler, "failureHandler cannot be null");
this.failureHandler = failureHandler;
}
/**
* Sets the {@link AuthenticationTrustResolver} to be used. The default is
* {@link AuthenticationTrustResolverImpl}.
* @param trustResolver the {@link AuthenticationTrustResolver} to use. Cannot be
* null.
*/
public void setTrustResolver(AuthenticationTrustResolver trustResolver) {
Assert.notNull(trustResolver, "trustResolver cannot be null");
this.trustResolver = trustResolver;
}
/**
* Sets the {@link SecurityContextHolderStrategy} to use. The default action is to use
* the {@link SecurityContextHolderStrategy} stored in {@link SecurityContextHolder}.
*
* @since 5.8
*/
public void setSecurityContextHolderStrategy(SecurityContextHolderStrategy securityContextHolderStrategy) {
Assert.notNull(securityContextHolderStrategy, "securityContextHolderStrategy cannot be null");
this.securityContextHolderStrategy = securityContextHolderStrategy;
}
}