Java tutorial
/**Copyright 2010 Research Studios Austria Forschungsgesellschaft mBH * * This file is part of easyrec. * * easyrec 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. * * easyrec 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 easyrec. If not, see <http://www.gnu.org/licenses/>. */ package org.easyrec.controller.aop; import com.google.common.base.Function; import com.google.common.collect.Collections2; import com.google.common.collect.Sets; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Pointcut; import org.easyrec.model.web.EasyRecSettings; import org.easyrec.util.core.Security; import org.easyrec.utils.MyUtils; import org.springframework.web.servlet.ModelAndView; import javax.annotation.Nullable; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import java.util.Set; /** * <p><b>Company: </b> * SAT, Research Studios Austria</p> * <p/> * <p><b>Copyright: </b> * (c) 2007</p> * <p/> * <p><b>last modified:</b><br/> * $Author: fsalcher $<br/> * $Date: 2012-03-19 14:22:17 +0100 (Mo, 19 Mr 2012) $<br/> * $Revision: 18781 $</p> * * @author David Mann */ @Aspect public class LoggedInCheckAspect { private String localName; private String webappPath; private String extendedWebAppPath; private EasyRecSettings easyrecSettings; /** * This String array conatains a list of public available sites. All pages in this array are accessible * without logging into the system. */ private static Set<String> PUBLIC_SITES = Sets.newHashSet("home", "login", "RSSBlog", "UpdateCheck", "operator/signin", "operator/signout", "api-js/easyrec.js", "/api-js/easyrec.js", "t", "about"); public void setEasyrecSettings(EasyRecSettings easyrecSettings) { this.easyrecSettings = easyrecSettings; } private final Log logger = LogFactory.getLog(getClass()); @Pointcut("execution(* org.springframework.web.servlet.mvc.Controller+.handleRequest(..))") public void allControllers() { } private void initPath(HttpServletRequest request) { localName = request.getLocalName(); localName = localName.equals("0.0.0.0") ? "localhost" : localName; this.webappPath = request.getContextPath(); this.extendedWebAppPath = request.getScheme() + "://" + localName + ":" + request.getLocalPort() + webappPath; PUBLIC_SITES = Sets.newHashSet(Collections2.transform(PUBLIC_SITES, new Function<String, String>() { public String apply(@Nullable String input) { StringBuilder result = new StringBuilder(webappPath); result.append('/'); result.append(input); return result.toString(); } })); } @Around("allControllers()") public Object LoggedInAspect(ProceedingJoinPoint pjp) throws Throwable { HttpServletRequest request = (HttpServletRequest) pjp.getArgs()[0]; HttpSession session = request.getSession(false); ModelAndView originalModelAndView = (ModelAndView) pjp.proceed(); if (extendedWebAppPath == null) initPath(request); boolean signedIn = false; try { if (session != null && session.getAttribute("signedInOperatorId") != null) signedIn = true; if (originalModelAndView != null) { originalModelAndView.addObject("signedIn", signedIn); originalModelAndView.addObject("isDeveloper", Security.isDeveloper(request)); originalModelAndView.addObject("securityToken", Security.getSecurityToken(request)); originalModelAndView.addObject("webappPath", webappPath); originalModelAndView.addObject("extendedWebappPath", extendedWebAppPath); originalModelAndView.addObject("isGenerator", easyrecSettings.isGenerator()); originalModelAndView.addObject("operationMode", easyrecSettings.getOperationMode()); originalModelAndView.addObject("currentMonth", MyUtils.getCurrentMonth()); originalModelAndView.addObject("currentMonthName", MyUtils.getCurrentMonthName()); originalModelAndView.addObject("currentYear", MyUtils.getCurrentYear()); if (session != null) { originalModelAndView.addObject("signedInOperator", session.getAttribute("signedInOperator")); originalModelAndView.addObject("signedInOperatorId", session.getAttribute("signedInOperatorId")); } originalModelAndView.addObject("easyrecName", easyrecSettings.getName()); originalModelAndView.addObject("easyrecVersion", easyrecSettings.getVersion()); originalModelAndView.addObject("easyrecBiz", easyrecSettings.getBiz()); originalModelAndView.addObject("easyrecReleases", easyrecSettings.getReleases()); originalModelAndView.addObject("checkUpdateUrl", easyrecSettings.getUpdateURL()); originalModelAndView.addObject("updateUrl", easyrecSettings.getReleases()); } } catch (IllegalStateException e) { logger.debug("User Logged Out and can not get Session atributes.", e); } String currentPage = request.getRequestURI(); boolean isPublicSite = PUBLIC_SITES.contains(currentPage); if (!signedIn && !isPublicSite) return new ModelAndView("redirect:" + webappPath + "/home"); return originalModelAndView; } }