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* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.ofbiz.webapp.control;
import java.io.IOException;
import java.util.Enumeration;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.ofbiz.base.util.Debug;
import org.apache.ofbiz.base.util.UtilCodec;
import org.apache.ofbiz.base.util.UtilGenerics;
import org.apache.ofbiz.base.util.UtilHttp;
import org.apache.ofbiz.base.util.UtilTimer;
import org.apache.ofbiz.base.util.UtilValidate;
import org.apache.ofbiz.base.util.template.FreeMarkerWorker;
import org.apache.ofbiz.entity.Delegator;
import org.apache.ofbiz.entity.DelegatorFactory;
import org.apache.ofbiz.entity.GenericDelegator;
import org.apache.ofbiz.entity.GenericValue;
import org.apache.ofbiz.entity.transaction.GenericTransactionException;
import org.apache.ofbiz.entity.transaction.TransactionUtil;
import org.apache.ofbiz.security.Security;
import org.apache.ofbiz.service.LocalDispatcher;
import org.apache.ofbiz.webapp.stats.ServerHitBin;
import org.apache.ofbiz.webapp.stats.VisitHandler;
import freemarker.ext.servlet.ServletContextHashModel;
/**
* ControlServlet.java - Master servlet for the web application.
*/
@SuppressWarnings("serial")
public class ControlServlet extends HttpServlet {
public static final String module = ControlServlet.class.getName();
public ControlServlet() {
super();
}
/**
* @see javax.servlet.Servlet#init(javax.servlet.ServletConfig)
*/
@Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
if (Debug.infoOn()) {
ServletContext servletContext = config.getServletContext();
String webappName = servletContext.getContextPath().length() != 0 ? servletContext.getContextPath().substring(1) : "";
Debug.logInfo("Loading webapp [" + webappName + "], located at " + servletContext.getRealPath("/"), module);
}
// initialize the request handler
getRequestHandler();
}
/**
* @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
/**
* @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
long requestStartTime = System.currentTimeMillis();
RequestHandler requestHandler = this.getRequestHandler();
HttpSession session = request.getSession();
// setup DEFAULT character encoding and content type, this will be overridden in the RequestHandler for view rendering
String charset = request.getCharacterEncoding();
// setup content type
String contentType = "text/html";
if (UtilValidate.isNotEmpty(charset) && !"none".equals(charset)) {
response.setContentType(contentType + "; charset=" + charset);
response.setCharacterEncoding(charset);
} else {
response.setContentType(contentType);
}
GenericValue userLogin = (GenericValue) session.getAttribute("userLogin");
//Debug.logInfo("Cert Chain: " + request.getAttribute("javax.servlet.request.X509Certificate"), module);
// set the Entity Engine user info if we have a userLogin
if (userLogin != null) {
GenericDelegator.pushUserIdentifier(userLogin.getString("userLoginId"));
}
// workaraound if we are in the root webapp
String webappName = UtilHttp.getApplicationName(request);
String rname = "";
if (request.getPathInfo() != null) {
rname = request.getPathInfo().substring(1);
}
if (rname.indexOf('/') > 0) {
rname = rname.substring(0, rname.indexOf('/'));
}
UtilTimer timer = null;
if (Debug.timingOn()) {
timer = new UtilTimer();
timer.setLog(true);
timer.timerString("[" + rname + "(Domain:" + request.getScheme() + "://" + request.getServerName() + ")] Request Begun, encoding=[" + charset + "]", module);
}
// Setup the CONTROL_PATH for JSP dispatching.
String contextPath = request.getContextPath();
if (contextPath == null || "/".equals(contextPath)) {
contextPath = "";
}
request.setAttribute("_CONTROL_PATH_", contextPath + request.getServletPath());
if (Debug.verboseOn())
Debug.logVerbose("Control Path: " + request.getAttribute("_CONTROL_PATH_"), module);
// for convenience, and necessity with event handlers, make security and delegator available in the request:
// try to get it from the session first so that we can have a delegator/dispatcher/security for a certain user if desired
Delegator delegator = null;
String delegatorName = (String) session.getAttribute("delegatorName");
if (UtilValidate.isNotEmpty(delegatorName)) {
delegator = DelegatorFactory.getDelegator(delegatorName);
}
if (delegator == null) {
delegator = (Delegator) getServletContext().getAttribute("delegator");
}
if (delegator == null) {
Debug.logError("[ControlServlet] ERROR: delegator not found in ServletContext", module);
} else {
request.setAttribute("delegator", delegator);
// always put this in the session too so that session events can use the delegator
session.setAttribute("delegatorName", delegator.getDelegatorName());
/* Uncomment this to enable the EntityClassLoader
ClassLoader loader = EntityClassLoader.getInstance(delegator.getDelegatorName(), Thread.currentThread().getContextClassLoader());
Thread.currentThread().setContextClassLoader(loader);
*/
}
LocalDispatcher dispatcher = (LocalDispatcher) session.getAttribute("dispatcher");
if (dispatcher == null) {
dispatcher = (LocalDispatcher) getServletContext().getAttribute("dispatcher");
}
if (dispatcher == null) {
Debug.logError("[ControlServlet] ERROR: dispatcher not found in ServletContext", module);
}
request.setAttribute("dispatcher", dispatcher);
Security security = (Security) session.getAttribute("security");
if (security == null) {
security = (Security) getServletContext().getAttribute("security");
}
if (security == null) {
Debug.logError("[ControlServlet] ERROR: security not found in ServletContext", module);
}
request.setAttribute("security", security);
request.setAttribute("_REQUEST_HANDLER_", requestHandler);
ServletContextHashModel ftlServletContext = new ServletContextHashModel(this, FreeMarkerWorker.getDefaultOfbizWrapper());
request.setAttribute("ftlServletContext", ftlServletContext);
// setup some things that should always be there
UtilHttp.setInitialRequestInfo(request);
VisitHandler.getVisitor(request, response);
// set the Entity Engine user info if we have a userLogin
String visitId = VisitHandler.getVisitId(session);
if (UtilValidate.isNotEmpty(visitId)) {
GenericDelegator.pushSessionIdentifier(visitId);
}
// display details on the servlet objects
if (Debug.verboseOn()) {
logRequestInfo(request);
}
// some containers call filters on EVERY request, even forwarded ones, so let it know that it came from the control servlet
request.setAttribute(ControlFilter.FORWARDED_FROM_SERVLET, Boolean.TRUE);
String errorPage = null;
try {
// the ServerHitBin call for the event is done inside the doRequest method
requestHandler.doRequest(request, response, null, userLogin, delegator);
} catch (RequestHandlerException e) {
Throwable throwable = e.getNested() != null ? e.getNested() : e;
if (throwable instanceof IOException) {
// when an IOException occurs (most of the times caused by the browser window being closed before the request is completed)
// the connection with the browser is lost and so there is no need to serve the error page; a message is logged to record the event
if (Debug.warningOn()) Debug.logWarning(e, "Communication error with the client while processing the request: " + request.getAttribute("_CONTROL_PATH_") + request.getPathInfo(), module);
if (Debug.verboseOn()) Debug.logVerbose(throwable, module);
} else {
Debug.logError(throwable, "Error in request handler: ", module);
request.setAttribute("_ERROR_MESSAGE_", UtilCodec.getEncoder("html").encode(throwable.toString()));
errorPage = requestHandler.getDefaultErrorPage(request);
}
} catch (RequestHandlerExceptionAllowExternalRequests e) {
errorPage = requestHandler.getDefaultErrorPage(request);
Debug.logInfo("Going to external page: " + request.getPathInfo(), module);
} catch (Exception e) {
Debug.logError(e, "Error in request handler: ", module);
request.setAttribute("_ERROR_MESSAGE_", UtilCodec.getEncoder("html").encode(e.toString()));
errorPage = requestHandler.getDefaultErrorPage(request);
}
// Forward to the JSP
// if (Debug.infoOn()) Debug.logInfo("[" + rname + "] Event done, rendering page: " + nextPage, module);
// if (Debug.timingOn()) timer.timerString("[" + rname + "] Event done, rendering page: " + nextPage, module);
if (errorPage != null) {
Debug.logError("An error occurred, going to the errorPage: " + errorPage, module);
RequestDispatcher rd = request.getRequestDispatcher(errorPage);
// use this request parameter to avoid infinite looping on errors in the error page...
if (request.getAttribute("_ERROR_OCCURRED_") == null && rd != null) {
request.setAttribute("_ERROR_OCCURRED_", Boolean.TRUE);
Debug.logError("Including errorPage: " + errorPage, module);
// NOTE DEJ20070727 after having trouble with all of these, try to get the page out and as a last resort just send something back
try {
rd.include(request, response);
} catch (Throwable t) {
Debug.logWarning("Error while trying to send error page using rd.include (will try response.getOutputStream or response.getWriter): " + t.toString(), module);
String errorMessage = "ERROR rendering error page [" + errorPage + "], but here is the error text: " + request.getAttribute("_ERROR_MESSAGE_");
try {
response.getWriter().print(errorMessage);
} catch (Throwable t2) {
try {
int errorToSend = HttpServletResponse.SC_INTERNAL_SERVER_ERROR;
Debug.logWarning("Error while trying to write error message using response.getOutputStream or response.getWriter: " + t.toString() + "; sending error code [" + errorToSend + "], and message [" + errorMessage + "]", module);
response.sendError(errorToSend, errorMessage);
} catch (Throwable t3) {
// wow, still bad... just throw an IllegalStateException with the message and let the servlet container handle it
throw new IllegalStateException(errorMessage);
}
}
}
} else {
if (rd == null) {
Debug.logError("Could not get RequestDispatcher for errorPage: " + errorPage, module);
}
String errorMessage = "<html><body>ERROR in error page, (infinite loop or error page not found with name [" + errorPage + "]), but here is the text just in case it helps you: " + request.getAttribute("_ERROR_MESSAGE_") + "</body></html>";
response.getWriter().print(errorMessage);
}
}
// sanity check: make sure we don't have any transactions in place
try {
// roll back current TX first
if (TransactionUtil.isTransactionInPlace()) {
Debug.logWarning("*** NOTICE: ControlServlet finished w/ a transaction in place! Rolling back.", module);
TransactionUtil.rollback();
}
// now resume/rollback any suspended txs
if (TransactionUtil.suspendedTransactionsHeld()) {
int suspended = TransactionUtil.cleanSuspendedTransactions();
Debug.logWarning("Resumed/Rolled Back [" + suspended + "] transactions.", module);
}
} catch (GenericTransactionException e) {
Debug.logWarning(e, module);
}
// run these two again before the ServerHitBin.countRequest call because on a logout this will end up creating a new visit
if (response.isCommitted() && request.getSession(false) == null) {
// response committed and no session, and we can't get a new session, what to do!
// without a session we can't log the hit, etc; so just do nothing; this should NOT happen much!
Debug.logError("Error in ControlServlet output where response isCommitted and there is no session (probably because of a logout); not saving ServerHit/Bin information because there is no session and as the response isCommitted we can't get a new one. The output was successful, but we just can't save ServerHit/Bin info.", module);
} else {
try {
UtilHttp.setInitialRequestInfo(request);
VisitHandler.getVisitor(request, response);
if (requestHandler.trackStats(request)) {
ServerHitBin.countRequest(webappName + "." + rname, request, requestStartTime, System.currentTimeMillis() - requestStartTime, userLogin);
}
} catch (Throwable t) {
Debug.logError(t, "Error in ControlServlet saving ServerHit/Bin information; the output was successful, but can't save this tracking information. The error was: " + t.toString(), module);
}
}
if (Debug.timingOn()) timer.timerString("[" + rname + "(Domain:" + request.getScheme() + "://" + request.getServerName() + ")] Request Done", module);
// sanity check 2: make sure there are no user or session infos in the delegator, ie clear the thread
GenericDelegator.clearUserIdentifierStack();
GenericDelegator.clearSessionIdentifierStack();
}
/**
* @see javax.servlet.Servlet#destroy()
*/
@Override
public void destroy() {
super.destroy();
}
protected RequestHandler getRequestHandler() {
return RequestHandler.getRequestHandler(getServletContext());
}
protected void logRequestInfo(HttpServletRequest request) {
ServletContext servletContext = this.getServletContext();
HttpSession session = request.getSession();
Debug.logVerbose("--- Start Request Headers: ---", module);
Enumeration<String> headerNames = UtilGenerics.cast(request.getHeaderNames());
while (headerNames.hasMoreElements()) {
String headerName = headerNames.nextElement();
Debug.logVerbose(headerName + ":" + request.getHeader(headerName), module);
}
Debug.logVerbose("--- End Request Headers: ---", module);
Debug.logVerbose("--- Start Request Parameters: ---", module);
Enumeration<String> paramNames = UtilGenerics.cast(request.getParameterNames());
while (paramNames.hasMoreElements()) {
String paramName = paramNames.nextElement();
Debug.logVerbose(paramName + ":" + request.getParameter(paramName), module);
}
Debug.logVerbose("--- End Request Parameters: ---", module);
Debug.logVerbose("--- Start Request Attributes: ---", module);
Enumeration<String> reqNames = UtilGenerics.cast(request.getAttributeNames());
while (reqNames != null && reqNames.hasMoreElements()) {
String attName = reqNames.nextElement();
Debug.logVerbose(attName + ":" + request.getAttribute(attName), module);
}
Debug.logVerbose("--- End Request Attributes ---", module);
Debug.logVerbose("--- Start Session Attributes: ---", module);
Enumeration<String> sesNames = null;
try {
sesNames = UtilGenerics.cast(session.getAttributeNames());
} catch (IllegalStateException e) {
Debug.logVerbose("Cannot get session attributes : " + e.getMessage(), module);
}
while (sesNames != null && sesNames.hasMoreElements()) {
String attName = sesNames.nextElement();
Debug.logVerbose(attName + ":" + session.getAttribute(attName), module);
}
Debug.logVerbose("--- End Session Attributes ---", module);
Enumeration<String> appNames = UtilGenerics.cast(servletContext.getAttributeNames());
Debug.logVerbose("--- Start ServletContext Attributes: ---", module);
while (appNames != null && appNames.hasMoreElements()) {
String attName = appNames.nextElement();
Debug.logVerbose(attName + ":" + servletContext.getAttribute(attName), module);
}
Debug.logVerbose("--- End ServletContext Attributes ---", module);
}
}