/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) 1999-2006 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/
package org.olat.core.dispatcher;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.mail.MessagingException;
import javax.mail.SendFailedException;
import javax.mail.internet.AddressException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.olat.core.CoreSpringFactory;
import org.olat.core.id.Identity;
import org.olat.core.id.IdentityManager;
import org.olat.core.logging.AssertException;
import org.olat.core.logging.LogFile;
import org.olat.core.logging.Tracing;
import org.olat.core.util.WebappHelper;
import org.olat.core.util.mail.Emailer;
/**
* Description:<br>
* Send an Email to the support address
* <P>
* Initial Date: Jan 31, 2006 <br>
*
* @author guido
*/
public class ErrorFeedbackMailer implements Dispatcher {
private static final ErrorFeedbackMailer INSTANCE = new ErrorFeedbackMailer();
private ErrorFeedbackMailer() {
// private since singleton
}
protected static ErrorFeedbackMailer getInstance() {
return INSTANCE;
}
/**
* send email to olat support with user submitted error informaition
*
* @param request
*/
public void sendMail(HttpServletRequest request) {
String feedback = request.getParameter("textarea");
String errorNr = feedback.substring(0, feedback.indexOf("\n") - 1);
String username = request.getParameter("username");
try {
IdentityManager im = (IdentityManager)CoreSpringFactory.getBean("core.id.IdentityManager");
Identity ident = im.findIdentityByName(username);
//if null, user may crashed befor getting a valid session, try with guest user instead
if (ident == null) ident = im.findIdentityByName("guest");
Emailer emailer = new Emailer(ident, true);
LogFile lf = new LogFile();
Date d = new Date();
SimpleDateFormat year = new SimpleDateFormat("yyyy");
SimpleDateFormat month = new SimpleDateFormat("MM");
SimpleDateFormat day = new SimpleDateFormat("dd");
String errorNum = parseErrorNumber(errorNr);
Collection logFileEntries = lf.getError(errorNum, day.format(d), month.format(d), year.format(d), false);
StringBuilder out = new StringBuilder();
if (logFileEntries != null) {
for (Iterator iter = logFileEntries.iterator(); iter.hasNext();) {
out.append((String) iter.next());
}
}
emailer.sendEmail(WebappHelper.getMailConfig("mailSupport"), "Feedback from Error Nr.: " + errorNr, request.getParameter("textarea")
+ "\n------------------------------------------\n\n --- from user: "+username+" ---" + out.toString());
} catch (AddressException e) {
// error in recipient email address(es)
handleException(request, e);
return;
} catch (SendFailedException e) {
// error in sending message
// CAUSE: sender email address invalid
handleException(request, e);
return;
} catch (MessagingException e) {
// error in message-subject || .-body
handleException(request, e);
return;
} catch (AssertException e) {
handleException(request, e);
return;
} catch (NullPointerException e) {
handleException(request, e);
return;
}
}
private String parseErrorNumber(String errorNr) {
// try with format N<nodeId>-E<errorCode> first
Pattern r1 = Pattern.compile("N[0-9]+-E[0-9]+");
Matcher m1 = r1.matcher(errorNr);
if (m1.find()) return m1.group();
Pattern r2 = Pattern.compile("E[0-9]+");
Matcher m2 = r2.matcher(errorNr);
if (m2.find()) return m2.group();
return "";
}
private void handleException(HttpServletRequest request, Exception e) {
String feedback = request.getParameter("textarea");
String username = request.getParameter("username");
Tracing.logError("Error sending error feedback mail to olat support (" + WebappHelper.getMailConfig("mailSupport")
+ ") from: " + username + " with content: " + feedback, e, this.getClass());
}
/**
* @see org.olat.core.dispatcher.Dispatcher#execute(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String)
*/
public void execute(HttpServletRequest request, HttpServletResponse response, String uriPrefix) {
sendMail(request);
DispatcherAction.redirectToDefaultDispatcher(response);
}
}