/*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at .
*
* Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
* WARRANTY OF ANY KIND, either express or implied. See the License for the specific
* language governing rights and limitations under the License.
*
* The Original Code is the Venice Web Communities System.
*
* The Initial Developer of the Original Code is Eric J. Bowersox ,
* for Silverwrist Design Studios. Portions created by Eric J. Bowersox are
* Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios. All Rights Reserved.
*
* Contributor(s):
*/
package com.silverwrist.venice.servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.log4j.*;
import com.silverwrist.util.StringUtil;
import com.silverwrist.venice.ValidationException;
import com.silverwrist.venice.core.*;
import com.silverwrist.venice.servlets.format.*;
public class ConfOperations extends VeniceServlet
{
/*--------------------------------------------------------------------------------
* Static data members
*--------------------------------------------------------------------------------
*/
private static Category logger = Category.getInstance(ConfOperations.class.getName());
/*--------------------------------------------------------------------------------
* Internal functions
*--------------------------------------------------------------------------------
*/
private CreateConferenceDialog makeCreateConferenceDialog() throws ServletException
{
final String desired_name = "CreateConferenceDialog";
DialogCache cache = DialogCache.getDialogCache(getServletContext());
if (!(cache.isCached(desired_name)))
{ // create a template and save it off
CreateConferenceDialog template = new CreateConferenceDialog();
cache.saveTemplate(template);
} // end if
// return a new copy
return (CreateConferenceDialog)(cache.getNewDialog(desired_name));
} // end makeCreateConferenceDialog
private EditConferenceDialog makeEditConferenceDialog() throws ServletException
{
final String desired_name = "EditConferenceDialog";
DialogCache cache = DialogCache.getDialogCache(getServletContext());
if (!(cache.isCached(desired_name)))
{ // create a template and save it off
EditConferenceDialog template = new EditConferenceDialog();
cache.saveTemplate(template);
} // end if
// return a new copy
return (EditConferenceDialog)(cache.getNewDialog(desired_name));
} // end makeEditConferenceDialog
private static boolean validateNewTopic(ServletRequest request, String on_error) throws ErrorBox
{
boolean is_title_null, is_zp_null;
String foo = request.getParameter("title");
if (foo==null)
throw new ErrorBox(null,"Title parameter was not specified.",on_error);
is_title_null = (foo.length()==0);
foo = request.getParameter("pseud");
if (foo==null)
throw new ErrorBox(null,"Pseud parameter was not specified.",on_error);
foo = request.getParameter("pb");
if (foo==null)
throw new ErrorBox(null,"Body text was not specified.",on_error);
is_zp_null = (foo.length()==0);
return is_title_null || is_zp_null;
} // end validateNewTopic
/*--------------------------------------------------------------------------------
* Overrides from class HttpServlet
*--------------------------------------------------------------------------------
*/
public String getServletInfo()
{
String rc = "ConfOperations servlet - General conference operations (list, create, etc.)\n"
+ "Part of the Venice Web Communities System\n";
return rc;
} // end getServletInfo
/*--------------------------------------------------------------------------------
* Overrides from class VeniceServlet
*--------------------------------------------------------------------------------
*/
protected VeniceContent doVeniceGet(HttpServletRequest request, VeniceEngine engine,
UserContext user, RenderData rdat)
throws ServletException, IOException, VeniceServletResult
{
// get the SIG
SIGContext sig = getSIGParameter(request,user,true,"top");
changeMenuSIG(request,sig);
String on_error = "confops?sig=" + sig.getSIGID();
// get the command we want to use
String cmd = getStandardCommandParam(request);
if (cmd.equals("C"))
{ // "C" = "Create conference"
if (!(sig.canCreateConference()))
return new ErrorBox("Access Error","You are not permitted to create conferences in this SIG.",
on_error);
// make the "create" dialog
CreateConferenceDialog dlg = makeCreateConferenceDialog();
dlg.setupDialog(engine,sig);
setMyLocation(request,on_error + "&cmd=C");
return dlg;
} // end if ("C" command)
if (cmd.equals("T"))
{ // "T" = "Create topic" (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confdisp?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
// Create the new topic form.
NewTopicForm ntf = new NewTopicForm(sig,conf);
ntf.setupNewRequest();
setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=T");
return ntf;
} // end if ("T" command)
if (cmd.equals("Q"))
{ // "Q" = display Manage menu (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confdisp?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
// display the "Manage Conference" display
setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q");
return new ManageConference(sig,conf);
} // end if ("Q" command)
if (cmd.equals("FX"))
{ // "FX" = the dreaded fixseen :-) - catches up the entire conference
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confdisp?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
try
{ // do the fixseen operation
conf.fixSeen();
} // end try
catch (DataException de)
{ // some sort of error in the database
return new ErrorBox("Database Error","Database error catching up conference: " + de.getMessage(),
on_error);
} // end catch
return null; // null response here
} // end if ("FX" command)
if (cmd.equals("E"))
{ // "E" = "Edit Conference Settings" (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
if (!(conf.canChangeConference()))
return new ErrorBox("Access Error","You are not permitted to change this conference's settings.",
on_error);
// create and return the Edit Conference dialog
EditConferenceDialog dlg = makeEditConferenceDialog();
try
{ // set up and return the dialog
dlg.setupDialog(sig,conf);
setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=E");
return dlg;
} // end try
catch (AccessError ae)
{ // some sort of access error - display an error dialog
return new ErrorBox("Access Error",ae.getMessage(),on_error);
} // end catch
catch (DataException de)
{ // database error retrieving the conference information
return new ErrorBox("Database Error","Database error getting conference information: "
+ de.getMessage(),on_error);
} // end catch
} // end if ("E" command)
if (cmd.equals("A"))
{ // "A" = "Manage Aliases" (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
if (!(conf.canChangeConference()))
return new ErrorBox("Access Error","You are not permitted to change this conference's aliases.",
on_error);
// process alias removal link
String remove = request.getParameter("rem");
if (!(StringUtil.isStringEmpty(remove)))
{ // do removal of an alias
try
{ // go ahead and remove the alias!
conf.removeAlias(remove);
} // end try
catch (AccessError ae)
{ // some sort of access error - display an error dialog
return new ErrorBox("Access Error",ae.getMessage(),on_error);
} // end catch
catch (DataException de)
{ // database error creating the conference
return new ErrorBox("Database Error","Database error removing alias: " + de.getMessage(),
on_error);
} // end catch
} // end if (removing an alias)
// display the "Manage Conference Aliases" display
try
{ // generate the display box
setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=A");
return new ManageConferenceAliases(sig,conf);
} // end try
catch (DataException de)
{ // error generating the display box
return new ErrorBox("Database Error","Database error displaying aliases: " + de.getMessage(),
on_error);
} // end catch
} // end if ("A" command)
if (cmd.equals("RP") || cmd.equals("RR"))
{ // "RP" = "Report Posters," "RR" = "Report Readers" (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
try
{ // generate the listing on this page
setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=" + cmd);
return new ConferenceActivity(sig,conf,cmd.equals("RP"));
} // end try
catch (DataException de)
{ // unable to get the data for the list
return new ErrorBox("Database Error","Database error displaying conference users: " + de.getMessage(),
on_error);
} // end catch
} // end if ("RP" and "RR" commands)
// Any unrecognized command shows us the conference list.
on_error = "sigprofile?sig=" + sig.getSIGID();
try
{ // make a conference listing
setMyLocation(request,"confops?sig=" + sig.getSIGID());
return new ConferenceListing(sig);
} // end try
catch (DataException de)
{ // something wrong in the database
return new ErrorBox("Database Error","Database error finding conferences: " + de.getMessage(),on_error);
} // end catch
catch (AccessError ae)
{ // some lack of access is causing problems
return new ErrorBox("Access Error",ae.getMessage(),on_error);
} // end catch
} // end doVeniceGet
protected VeniceContent doVenicePost(HttpServletRequest request, VeniceEngine engine,
UserContext user, RenderData rdat)
throws ServletException, IOException, VeniceServletResult
{
// get the SIG
SIGContext sig = getSIGParameter(request,user,true,"top");
changeMenuSIG(request,sig);
String on_error = "confops?sig=" + sig.getSIGID();
// get the command we want to use
String cmd = getStandardCommandParam(request);
if (cmd.equals("C"))
{ // "C" = "Create Conference"
if (!(sig.canCreateConference()))
return new ErrorBox("Access Error","You are not permitted to create conferences in this SIG.",
on_error);
// load up the create conference dialog!
CreateConferenceDialog dlg = makeCreateConferenceDialog();
dlg.setupDialog(engine,sig);
if (dlg.isButtonClicked(request,"cancel"))
throw new RedirectResult(on_error); // they chickened out - go back to the conference list
if (dlg.isButtonClicked(request,"create"))
{ // OK, they actually want to create the new conference...
dlg.loadValues(request); // load the form data
try
{ // attempt to create the conference!
ConferenceContext conf = dlg.doDialog(sig);
// success! redirect to the conference's topic list
throw new RedirectResult("confdisp?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID());
} // end try
catch (ValidationException ve)
{ // validation error - throw it back to the user
dlg.resetOnError(ve.getMessage() + " Please try again.");
} // end catch
catch (AccessError ae)
{ // some sort of access error - display an error dialog
return new ErrorBox("Access Error",ae.getMessage(),on_error);
} // end catch
catch (DataException de)
{ // database error creating the conference
return new ErrorBox("Database Error","Database error creating conference: " + de.getMessage(),
on_error);
} // end catch
setMyLocation(request,on_error + "&cmd=C");
return dlg; // redisplay the dialog
} // end if ("create" button clicked)
// error - don't know what button was clicked
logger.error("no known button click on ConfOperations.doPost, cmd=C");
return new ErrorBox("Internal Error","Unknown command button pressed",on_error);
} // end if ("C" command)
if (cmd.equals("T"))
{ // "T" command = Create New Topic (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confdisp?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
// determine what to do based on the button pressed
if (isImageButtonClicked(request,"cancel"))
throw new RedirectResult(on_error); // the user chickened out - go back to the conference display
if (isImageButtonClicked(request,"preview"))
{ // generate a preview and redisplay the form
NewTopicForm ntf = new NewTopicForm(sig,conf);
try
{ // generate a preview display
ntf.generatePreview(engine,conf,request);
} // end try
catch (ValidationException ve)
{ // something messed up in the preview generation
return new ErrorBox(null,ve.getMessage(),on_error);
} // end catch
if (ntf.isNullRequest())
return null; // no title or text specified - "204 No Content"
setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=T");
return ntf;
} // end if ("preview" clicked)
if (isImageButtonClicked(request,"post"))
{ // first validate that we've got all the parameters
if (validateNewTopic(request,on_error))
return null; // this is a null request - send a null response
try
{ // add the new topic!
TopicContext topic = conf.addTopic(request.getParameter("title"),request.getParameter("pseud"),
request.getParameter("pb"));
final String yes = "Y";
if (yes.equals(request.getParameter("attach")))
{ // we need to upload an attachment for this post
setMyLocation(request,on_error);
return new AttachmentForm(sig,conf,topic.getMessage(0),on_error);
} // end if
} // end try
catch (DataException de)
{ // display a database error
return new ErrorBox("Database Error","Database error adding topic: " + de.getMessage(),on_error);
} // end catch
catch (AccessError ae)
{ // some sort of access problem
return new ErrorBox("Access Error",ae.getMessage(),on_error);
} // end catch
// jump back to the form under normal circumstances
throw new RedirectResult(on_error);
} // end if ("post" clicked)
// we don't know what button was pressed
logger.error("no known button click on ConfOperations.doPost, cmd=T");
return new ErrorBox("Internal Error","Unknown command button pressed",on_error);
} // end if ("T" command)
if (cmd.equals("P"))
{ // "P" = Set default pseud (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confdisp?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
try
{ // go set the pseud!
String pseud = request.getParameter("pseud");
if (pseud!=null)
conf.setDefaultPseud(pseud);
} // end try
catch (DataException de)
{ // oops - there was a problem!
return new ErrorBox("Database Error","Database error setting pseud: " + de.getMessage(),on_error);
} // end catch
return null; // don't change the view
} // end if ("P" command)
if (cmd.equals("E"))
{ // "E" = "Edit Conference Settings" (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
if (!(conf.canChangeConference()))
return new ErrorBox("Access Error","You are not permitted to change this conference's settings.",
on_error);
// create the dialog class
EditConferenceDialog dlg = makeEditConferenceDialog();
if (dlg.isButtonClicked(request,"cancel"))
throw new RedirectResult(on_error); // they chickened out - go back to the conference list
if (dlg.isButtonClicked(request,"update"))
{ // they're changing the conference - do what you have to
dlg.loadValues(request); // load the form data
try
{ // run that baby!
dlg.doDialog(conf);
// success - return back to where we started from
throw new RedirectResult(on_error);
} // end try
catch (ValidationException ve)
{ // validation error - throw it back to the user
dlg.resetOnError(sig,conf,ve.getMessage() + " Please try again.");
} // end catch
catch (AccessError ae)
{ // some sort of access error - display an error dialog
return new ErrorBox("Access Error",ae.getMessage(),on_error);
} // end catch
catch (DataException de)
{ // database error creating the conference
return new ErrorBox("Database Error","Database error updating conference: " + de.getMessage(),
on_error);
} // end catch
setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=E");
return dlg; // redisplay the dialog
} // end if
} // end if ("E" command)
if (cmd.equals("A"))
{ // "A" = "Add Alias" (requires conference parameter)
ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
if (!(conf.canChangeConference()))
return new ErrorBox("Access Error","You are not permitted to change this conference's settings.",
on_error);
String new_alias = request.getParameter("alias");
if (StringUtil.isStringEmpty(new_alias))
return null; // this is a no-op
on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=A";
String error_message = null;
if (IDUtils.isValidVeniceID(new_alias))
{ // the alias we have netered is perfectly valid...
try
{ // go ahead and add the alias!
conf.addAlias(new_alias);
} // end try
catch (AccessError ae)
{ // some sort of access error - display an error dialog
return new ErrorBox("Access Error",ae.getMessage(),on_error);
} // end catch
catch (DataException de)
{ // database error creating the conference
return new ErrorBox("Database Error","Database error adding alias: " + de.getMessage(),
on_error);
} // end catch
} // end if
else // alias is not valid
error_message = "The alias you have entered is not a valid identifier. Please try again.";
// redisplay the "Manage Conference Aliases" display
try
{ // generate the display box
setMyLocation(request,on_error);
return new ManageConferenceAliases(sig,conf);
} // end try
catch (DataException de)
{ // error generating the display box
return new ErrorBox("Database Error","Database error displaying aliases: " + de.getMessage(),
"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q");
} // end catch
} // end if ("A" command)
// unrecognized command!
logger.error("invalid command to ConfOperations.doPost: " + cmd);
return new ErrorBox("Internal Error","Invalid command to ConfOperations.doPost",on_error);
} // end doVenicePost
} // end class ConfOperations