/*
* 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 = 1L;
String jbpmConfigurationResource = null;
String jbpmContextName = null;
boolean isAuthenticationEnabled = true;
public void init(FilterConfig filterConfig) throws ServletException {
// get the jbpm configuration resource
this.jbpmConfigurationResource = filterConfig.getInitParameter("jbpm.configuration.resource");
// get the jbpm context to be used from the jbpm configuration
this.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 {
String actorId = null;
// see if we can get the authenticated swimlaneActorId
if (servletRequest instanceof HttpServletRequest) {
HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
Principal userPrincipal = httpServletRequest.getUserPrincipal();
if (userPrincipal != null) {
actorId = userPrincipal.getName();
}
}
JbpmContext jbpmContext = getJbpmConfiguration().createJbpmContext(jbpmContextName);
try {
if (isAuthenticationEnabled) {
jbpmContext.setActorId(actorId);
}
filterChain.doFilter(servletRequest, servletResponse);
} finally {
jbpmContext.close();
}
}
protected JbpmConfiguration getJbpmConfiguration() {
return JbpmConfiguration.getInstance(jbpmConfigurationResource);
}
public void destroy() {
}
}