org.mycore.frontend.servlets.MCRContainerLoginServlet Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MyCoRe is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MyCoRe. If not, see .
*/
package org.mycore.frontend.servlets;
import java.security.Principal;
import java.util.Optional;
import javax.servlet.http.HttpServletRequest;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.mycore.common.MCRSession;
import org.mycore.common.MCRSessionMgr;
import org.mycore.common.MCRSystemUserInformation;
import org.mycore.common.MCRUserInformation;
import org.mycore.frontend.MCRFrontendUtil;
/**
* @author Thomas Scheffler (yagee)
*
*/
public class MCRContainerLoginServlet extends MCRServlet {
private static final long serialVersionUID = 1L;
private static final Logger LOGGER = LogManager.getLogger(MCRContainerLoginServlet.class);
/* (non-Javadoc)
* @see org.mycore.frontend.servlets.MCRServlet#think(org.mycore.frontend.servlets.MCRServletJob)
*/
@Override
protected void think(MCRServletJob job) throws Exception {
MCRSession session = MCRSessionMgr.getCurrentSession();
session.setUserInformation(new ContainerUserInformation(session));
LOGGER.info("Logged in: {}", session.getUserInformation().getUserID());
}
/* (non-Javadoc)
* @see org.mycore.frontend.servlets.MCRServlet#render(org.mycore.frontend.servlets.MCRServletJob, java.lang.Exception)
*/
@Override
protected void render(MCRServletJob job, Exception ex) throws Exception {
String backToUrl = getProperty(job.getRequest(), "url");
if (backToUrl == null) {
String referer = job.getRequest().getHeader("Referer");
backToUrl = (referer != null) ? referer : MCRFrontendUtil.getBaseURL();
}
job.getResponse().sendRedirect(job.getResponse().encodeRedirectURL(backToUrl));
}
protected static class ContainerUserInformation implements MCRUserInformation {
protected MCRSession session;
String lastUser;
public ContainerUserInformation(MCRSession session) {
this.session = session;
}
@Override
public String getUserID() {
lastUser = getCurrentRequest()
.flatMap(r -> Optional.ofNullable(r.getUserPrincipal()))
.map(Principal::getName)
.orElseGet(() -> Optional.ofNullable(lastUser)
.orElseGet(MCRSystemUserInformation.getGuestInstance()::getUserID));
return lastUser;
}
@Override
public boolean isUserInRole(String role) {
return getCurrentRequest().map(r -> r.isUserInRole(role)).orElse(Boolean.FALSE);
}
@Override
public String getUserAttribute(String attribute) {
return null;
}
protected Optional getCurrentRequest() {
LogManager.getLogger(getClass()).debug("Getting request from session: {}", session.getID());
return session.getServletRequest();
}
}
}