/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.jboss.seam.faces.security;
import java.io.IOException;
import java.util.Map;
import javax.enterprise.event.Observes;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServletRequest;
import org.jboss.seam.faces.event.PostLoginEvent;
import org.jboss.seam.faces.event.PreLoginEvent;
/**
* Listen for {@link PreLoginEvent} and {@link PostLoginEvent} events, storing the viewId requested pre login,
* and re-instating the navigation post login.
*
* @author <a href="mailto:bleathem@gmail.com">Brian Leathem</a>
*/
public class LoginListener {
private static final String PRE_LOGIN_URL = LoginListener.class.getName() + "_PRE_LOGIN_URL";
public void observePreLoginEvent(@Observes PreLoginEvent event) {
if (event.getFacesContext().getExternalContext().getRequest() instanceof HttpServletRequest) {
HttpServletRequest request = (HttpServletRequest) event.getFacesContext().getExternalContext().getRequest();
StringBuffer sb = request.getRequestURL();
// build the querystring out of the request parameters, because Reqeust#getQueryString is often null
Map<String, String> requestParameterMap = event.getFacesContext().getExternalContext().getRequestParameterMap();
if (requestParameterMap != null) {
boolean first = true;
for (Map.Entry<String, String> entry : requestParameterMap.entrySet()) {
if (first) {
sb.append("?");
} else {
sb.append("&");
}
sb.append(entry.getKey()).append("=").append(entry.getValue());
}
}
String requestedUrl = sb.toString();
event.getSessionMap().put(PRE_LOGIN_URL, requestedUrl);
}
}
public void observePostLoginEvent(@Observes PostLoginEvent event) {
FacesContext context = event.getFacesContext();
if (context.getExternalContext().getSessionMap().get(PRE_LOGIN_URL) != null) {
String oldUrl = (String) context.getExternalContext().getSessionMap().get(PRE_LOGIN_URL);
context.getExternalContext().getSessionMap().remove(PRE_LOGIN_URL);
try {
event.getFacesContext().getExternalContext().redirect(oldUrl);
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
}
}