org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler Maven / Gradle / Ivy
/*
* Copyright 2002-2018 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;
import java.io.IOException;
import javax.servlet.ServletException;
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.http.HttpStatus;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.WebAttributes;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.util.UrlUtils;
import org.springframework.util.Assert;
/**
* AuthenticationFailureHandler which performs a redirect to the value of the
* {@link #setDefaultFailureUrl defaultFailureUrl} property when the
* onAuthenticationFailure method is called. If the property has not been set it
* will send a 401 response to the client, with the error message from the
* AuthenticationException which caused the failure.
*
* If the {@code useForward} property is set, a {@code RequestDispatcher.forward} call
* will be made to the destination instead of a redirect.
*
* @author Luke Taylor
* @since 3.0
*/
public class SimpleUrlAuthenticationFailureHandler implements
AuthenticationFailureHandler {
protected final Log logger = LogFactory.getLog(getClass());
private String defaultFailureUrl;
private boolean forwardToDestination = false;
private boolean allowSessionCreation = true;
private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
public SimpleUrlAuthenticationFailureHandler() {
}
public SimpleUrlAuthenticationFailureHandler(String defaultFailureUrl) {
setDefaultFailureUrl(defaultFailureUrl);
}
/**
* Performs the redirect or forward to the {@code defaultFailureUrl} if set, otherwise
* returns a 401 error code.
*
* If redirecting or forwarding, {@code saveException} will be called to cache the
* exception for use in the target view.
*/
public void onAuthenticationFailure(HttpServletRequest request,
HttpServletResponse response, AuthenticationException exception)
throws IOException, ServletException {
if (defaultFailureUrl == null) {
logger.debug("No failure URL set, sending 401 Unauthorized error");
response.sendError(HttpStatus.UNAUTHORIZED.value(),
HttpStatus.UNAUTHORIZED.getReasonPhrase());
}
else {
saveException(request, exception);
if (forwardToDestination) {
logger.debug("Forwarding to " + defaultFailureUrl);
request.getRequestDispatcher(defaultFailureUrl)
.forward(request, response);
}
else {
logger.debug("Redirecting to " + defaultFailureUrl);
redirectStrategy.sendRedirect(request, response, defaultFailureUrl);
}
}
}
/**
* Caches the {@code AuthenticationException} for use in view rendering.
*
* If {@code forwardToDestination} is set to true, request scope will be used,
* otherwise it will attempt to store the exception in the session. If there is no
* session and {@code allowSessionCreation} is {@code true} a session will be created.
* Otherwise the exception will not be stored.
*/
protected final void saveException(HttpServletRequest request,
AuthenticationException exception) {
if (forwardToDestination) {
request.setAttribute(WebAttributes.AUTHENTICATION_EXCEPTION, exception);
}
else {
HttpSession session = request.getSession(false);
if (session != null || allowSessionCreation) {
request.getSession().setAttribute(WebAttributes.AUTHENTICATION_EXCEPTION,
exception);
}
}
}
/**
* The URL which will be used as the failure destination.
*
* @param defaultFailureUrl the failure URL, for example "/loginFailed.jsp".
*/
public void setDefaultFailureUrl(String defaultFailureUrl) {
Assert.isTrue(UrlUtils.isValidRedirectUrl(defaultFailureUrl),
() -> "'" + defaultFailureUrl + "' is not a valid redirect URL");
this.defaultFailureUrl = defaultFailureUrl;
}
protected boolean isUseForward() {
return forwardToDestination;
}
/**
* If set to true, performs a forward to the failure destination URL instead
* of a redirect. Defaults to false.
*/
public void setUseForward(boolean forwardToDestination) {
this.forwardToDestination = forwardToDestination;
}
/**
* Allows overriding of the behaviour when redirecting to a target URL.
*/
public void setRedirectStrategy(RedirectStrategy redirectStrategy) {
this.redirectStrategy = redirectStrategy;
}
protected RedirectStrategy getRedirectStrategy() {
return redirectStrategy;
}
protected boolean isAllowSessionCreation() {
return allowSessionCreation;
}
public void setAllowSessionCreation(boolean allowSessionCreation) {
this.allowSessionCreation = allowSessionCreation;
}
}