/*
* 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
* /*
* Created on Feb 3, 2005 5:15:34 PM
* The JForum Project
* http://www.jforum.net
*/
package net.jforum.exceptions;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import net.jforum.JForumExecutionContext;
import net.jforum.SessionFacade;
import net.jforum.context.RequestContext;
import net.jforum.util.preferences.ConfigKeys;
import net.jforum.util.preferences.SystemGlobals;
import org.apache.log4j.Logger;
import freemarker.template.SimpleHash;
import freemarker.template.Template;
/**
* @author Rafael Steil
* @version $Id: ExceptionWriter.java,v 1.14 2007/10/10 04:54:20 rafaelsteil Exp $
*/
public class ExceptionWriter
{
private static Logger logger = Logger.getLogger(ExceptionWriter.class);
public void handleExceptionData(Throwable t, Writer w, RequestContext request)
{
StringWriter strWriter = new StringWriter();
PrintWriter writer = new PrintWriter(strWriter);
t.printStackTrace(writer);
String currentUrl = this.extractCurrentUrl(request);
writer.write(currentUrl);
writer.close();
try {
logger.error(strWriter);
String message = "";
Throwable cause = t.getCause();
while (cause != null) {
message = cause.toString();
cause = cause.getCause();
}
if (message == null || message.equals("")) {
message = t.getMessage();
}
if (message == null || message.equals("")) {
message = t.toString();
}
boolean canViewStackTrace = !SystemGlobals.getBoolValue(ConfigKeys.STACKTRACE_MODERATORS_ONLY)
|| (SessionFacade.isLogged() && SessionFacade.getUserSession().isModerator());
String filter = "[<>]";
String stackTrace = canViewStackTrace
? strWriter.toString()
: "Only moderators can view stack trace.";
stackTrace = stackTrace.replaceAll(filter, "");
message = message.replaceAll(filter, "");
SimpleHash templateContext = JForumExecutionContext.getTemplateContext();
templateContext.put("stackTrace", stackTrace);
templateContext.put("message", message);
Template template = JForumExecutionContext.templateConfig().getTemplate("exception.html");
template.process(templateContext, w);
}
catch (Exception e) {
strWriter = new StringWriter();
writer = new PrintWriter(strWriter);
e.printStackTrace(writer);
writer.close();
logger.error(strWriter);
}
}
private String extractCurrentUrl(RequestContext request)
{
return request == null
? ""
: new StringBuffer().append("\nURL is: ")
.append(request.getRequestURI())
.append('?')
.append(request.getQueryString())
.toString();
}
}