/* * JBoss, Home of Professional Open Source * Copyright 2005, JBoss Inc., and individual contributors as indicated * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.jbpm.web; import java.io.IOException; import java.io.Serializable; import java.security.Principal; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import org.jbpm.JbpmConfiguration; import org.jbpm.JbpmContext; public class JbpmContextFilter implements Filter, Serializable { private static final long serialVersionUID = 2L; private JbpmConfiguration jbpmConfiguration; private String jbpmContextName; private boolean isAuthenticationEnabled = true; public void init(FilterConfig filterConfig) throws ServletException { // get the jbpm configuration resource String resource = filterConfig.getServletContext() .getInitParameter("jbpm.configuration.resource"); jbpmConfiguration = JbpmConfiguration.getInstance(resource); // get the jbpm context to be used from the jbpm configuration jbpmContextName = filterConfig.getInitParameter("jbpm.context.name"); if (jbpmContextName == null) { jbpmContextName = JbpmContext.DEFAULT_JBPM_CONTEXT_NAME; } // see if authentication is turned off String isAuthenticationEnabledText = filterConfig.getInitParameter("authentication"); if (isAuthenticationEnabledText != null && "disabled".equalsIgnoreCase(isAuthenticationEnabledText)) { isAuthenticationEnabled = false; } } public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { JbpmContext jbpmContext = getJbpmConfiguration().createJbpmContext(jbpmContextName); try { if (isAuthenticationEnabled && servletRequest instanceof HttpServletRequest) { HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest; Principal userPrincipal = httpServletRequest.getUserPrincipal(); if (userPrincipal != null) jbpmContext.setActorId(userPrincipal.getName()); } filterChain.doFilter(servletRequest, servletResponse); } finally { jbpmContext.close(); } } protected JbpmConfiguration getJbpmConfiguration() { return jbpmConfiguration; } public void destroy() { } }