/*
* Copyright (c) JForum Team
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* 1) Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* 2) Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* 3) Neither the name of "Rafael Steil" nor
* the names of its contributors may be used to endorse
* or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
* HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
*
* This file creation date: Mar 3, 2003 / 11:43:35 AM
* The JForum Project
* http://www.jforum.net
*/
package net.jforum;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.sql.Connection;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.jforum.context.JForumContext;
import net.jforum.context.RequestContext;
import net.jforum.context.ResponseContext;
import net.jforum.context.web.WebRequestContext;
import net.jforum.context.web.WebResponseContext;
import net.jforum.dao.MySQLVersionWorkarounder;
import net.jforum.entities.Banlist;
import net.jforum.exceptions.ExceptionWriter;
import net.jforum.exceptions.ForumStartupException;
import net.jforum.repository.BanlistRepository;
import net.jforum.repository.ModulesRepository;
import net.jforum.repository.RankingRepository;
import net.jforum.repository.SecurityRepository;
import net.jforum.repository.SmiliesRepository;
import net.jforum.util.I18n;
import net.jforum.util.preferences.ConfigKeys;
import net.jforum.util.preferences.SystemGlobals;
import freemarker.template.SimpleHash;
import freemarker.template.Template;
/**
* Front Controller.
*
* @author Rafael Steil
* @version $Id: JForum.java,v 1.116 2007/10/10 04:54:20 rafaelsteil Exp $
*/
public class JForum extends JForumBaseServlet
{
private static boolean isDatabaseUp;
/**
* @see javax.servlet.Servlet#init(javax.servlet.ServletConfig)
*/
public void init(ServletConfig config) throws ServletException
{
super.init(config);
super.startApplication();
// Start database
isDatabaseUp = ForumStartup.startDatabase();
try {
Connection conn = DBConnection.getImplementation().getConnection();
conn.setAutoCommit(!SystemGlobals.getBoolValue(ConfigKeys.DATABASE_USE_TRANSACTIONS));
// Try to fix some MySQL problems
MySQLVersionWorkarounder dw = new MySQLVersionWorkarounder();
dw.handleWorkarounds(conn);
// Continues loading the forum
JForumExecutionContext ex = JForumExecutionContext.get();
ex.setConnection(conn);
JForumExecutionContext.set(ex);
// Init general forum stuff
ForumStartup.startForumRepository();
RankingRepository.loadRanks();
SmiliesRepository.loadSmilies();
BanlistRepository.loadBanlist();
}
catch (Throwable e) {
e.printStackTrace();
throw new ForumStartupException("Error while starting jforum", e);
}
finally {
JForumExecutionContext.finish();
}
}
/**
* @see javax.servlet.http.HttpServlet#service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public void service(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException
{
Writer out = null;
JForumContext forumContext = null;
RequestContext request = null;
ResponseContext response = null;
String encoding = SystemGlobals.getValue(ConfigKeys.ENCODING);
try {
// Initializes the execution context
JForumExecutionContext ex = JForumExecutionContext.get();
request = new WebRequestContext(req);
response = new WebResponseContext(res);
this.checkDatabaseStatus();
forumContext = new JForumContext(request.getContextPath(),
SystemGlobals.getValue(ConfigKeys.SERVLET_EXTENSION),
request,
response
);
ex.setForumContext(forumContext);
JForumExecutionContext.set(ex);
// Setup stuff
SimpleHash context = JForumExecutionContext.getTemplateContext();
ControllerUtils utils = new ControllerUtils();
utils.refreshSession();
context.put("logged", SessionFacade.isLogged());
//for custom language by pinke@trydone.com
String lang=request.getParameter("lang");
if(lang!=null){
SessionFacade.getUserSession().setLang(lang);
}
context.put("locales",SystemGlobals.getLocaleList());
// Process security data
SecurityRepository.load(SessionFacade.getUserSession().getUserId());
utils.prepareTemplateContext(context, forumContext);
String module = request.getModule();
// Gets the module class name
String moduleClass = module != null
? ModulesRepository.getModuleClass(module)
: null;
if (moduleClass == null) {
// Module not found, send 404 not found response
response.sendError(HttpServletResponse.SC_NOT_FOUND);
}
else {
boolean shouldBan = this.shouldBan(request.getRemoteAddr());
if (!shouldBan) {
context.put("moduleName", module);
context.put("action", request.getAction());
}
else {
moduleClass = ModulesRepository.getModuleClass("forums");
context.put("moduleName", "forums");
((WebRequestContext)request).changeAction("banned");
}
if (shouldBan && SystemGlobals.getBoolValue(ConfigKeys.BANLIST_SEND_403FORBIDDEN)) {
response.sendError(HttpServletResponse.SC_FORBIDDEN);
}
else {
context.put("language", I18n.getUserLanguage());
context.put("session", SessionFacade.getUserSession());
context.put("request", req);
context.put("response", response);
out = this.processCommand(out, request, response, encoding, context, moduleClass);
}
}
}
catch (RuntimeException e) {
this.handleException(out, response, encoding, e, request);}
catch (Exception e) {
this.handleException(out, response, encoding, e, request);
}
finally {
this.handleFinally(out, forumContext, response);
}
}
private Writer processCommand(Writer out, RequestContext request, ResponseContext response,
String encoding, SimpleHash context, String moduleClass) throws Exception
{
// Here we go, baby
Command c = this.retrieveCommand(moduleClass);
Template template = null;
template = c.process(request, response, context);
if (JForumExecutionContext.getRedirectTo() == null) {
String contentType = JForumExecutionContext.getContentType();
if (contentType == null) {
contentType = "text/html; charset=" + encoding;
}
response.setContentType(contentType);
// Binary content are expected to be fully
// handled in the action, including outputstream
// manipulation
if (template != null)
if (!JForumExecutionContext.isCustomContent()) {
out = new BufferedWriter(new OutputStreamWriter(response.getOutputStream(), encoding));
template.process(JForumExecutionContext.getTemplateContext(), out);
out.flush();
}
}
return out;
}
private void checkDatabaseStatus()
{
if (!isDatabaseUp) {
synchronized (this) {
if (!isDatabaseUp) {
isDatabaseUp = ForumStartup.startDatabase();
}
}
}
}
private void handleFinally(Writer out, JForumContext forumContext, ResponseContext response) throws IOException
{
try {
if (out != null) { out.close(); }
}
catch (Exception e) {
// catch close error
}
String redirectTo = JForumExecutionContext.getRedirectTo();
JForumExecutionContext.finish();
if (redirectTo != null) {
if (forumContext != null && forumContext.isEncodingDisabled()) {
response.sendRedirect(redirectTo);
}
else {
response.sendRedirect(response.encodeRedirectURL(redirectTo));
}
}
}
private void handleException(Writer out, ResponseContext response, String encoding,
Exception e, RequestContext request) throws IOException
{
JForumExecutionContext.enableRollback();
if (e.toString().indexOf("ClientAbortException") == -1) {
response.setContentType("text/html; charset=" + encoding);
if (out != null) {
new ExceptionWriter().handleExceptionData(e, out, request);
}
else {
new ExceptionWriter().handleExceptionData(e, new BufferedWriter(new OutputStreamWriter(response.getOutputStream(),encoding)), request);
}
}
}
private boolean shouldBan(String ip)
{
Banlist b = new Banlist();
b.setUserId(SessionFacade.getUserSession().getUserId());
b.setIp(ip);
return BanlistRepository.shouldBan(b);
}
private Command retrieveCommand(String moduleClass) throws Exception
{
return (Command)Class.forName(moduleClass).newInstance();
}
/**
* @see javax.servlet.GenericServlet#destroy()
*/
public void destroy() {
super.destroy();
System.out.println("Destroying JForum...");
try {
DBConnection.getImplementation().realReleaseAllConnections();
ConfigLoader.stopCacheEngine();
}
catch (Exception e) { }
}
}