CampaignUploadHandler.java
/*
* Copyright (c) 2002-2020, City of Paris
* 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
* and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice
* and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of 'Mairie de Paris' nor 'Lutece' 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 HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* POSSIBILITY OF SUCH DAMAGE.
*
* License 1.0
*/
package fr.paris.lutece.plugins.participatorybudget.service.campaign;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.lang.StringUtils;
import fr.paris.lutece.plugins.asynchronousupload.service.AbstractAsynchronousUploadHandler;
import fr.paris.lutece.portal.service.i18n.I18nService;
import fr.paris.lutece.portal.service.util.AppException;
import fr.paris.lutece.portal.service.util.AppPropertiesService;
import fr.paris.lutece.util.filesystem.UploadUtil;
public class CampaignUploadHandler extends AbstractAsynchronousUploadHandler
{
public static final String BEAN_NAME = "participatorybudget.campaignUploadHandler";
private static final int DEFAULT_MAX_FILE_SIZE = 2097152;
private static final String HANDLER_NAME = "campaignUploadHandler";
// Error messages
private static final String ERROR_MESSAGE_MULTIPLE_UPLOAD = "participatorybudget.upload.message.multipleUpload";
private static final String ERROR_MESSAGE_AVATAR_MAX_SIZE = "participatorybudget.upload.message.avatarMaxSize";
private static final String ERROR_MESSAGE_AVATAR_MIME_TYPE_AUTORIZED = "participatorybudget.upload.message.avatarMimeTypeAutorized";
// PROPERTY
private static final String PROPERTY_AVATAR_MAX_SIZE = "participatorybudget.avatarMaxFileSize";
private static final String PROPERTY_AVATAR_EXTENSION_AUTORIZED = "participatorybudget.avatarExtensionAutorized";
// Could be just "images" and "docs"
/* <sessionId,<fieldName,fileItems>> */
/* contains uploaded file items */
private static Map<String, Map<String, List<FileItem>>> _mapAsynchronousUpload = new ConcurrentHashMap<String, Map<String, List<FileItem>>>( );
@Override
public void addFileItemToUploadedFilesList( FileItem fileItem, String strFieldName, HttpServletRequest request )
{
// This is the name that will be displayed in the form. We keep
// the original name, but clean it to make it cross-platform.
String strFileName = UploadUtil.cleanFileName( fileItem.getName( ).trim( ) );
initMap( request.getSession( ).getId( ), strFieldName );
// Check if this file has not already been uploaded
List<FileItem> uploadedFiles = getListUploadedFiles( strFieldName, request.getSession( ) );
if ( uploadedFiles != null )
{
boolean bNew = true;
if ( !uploadedFiles.isEmpty( ) )
{
Iterator<FileItem> iterUploadedFiles = uploadedFiles.iterator( );
while ( bNew && iterUploadedFiles.hasNext( ) )
{
FileItem uploadedFile = iterUploadedFiles.next( );
String strUploadedFileName = UploadUtil.cleanFileName( uploadedFile.getName( ).trim( ) );
// If we find a file with the same name and the same
// length, we consider that the current file has
// already been uploaded
bNew = !( StringUtils.equals( strUploadedFileName, strFileName ) && ( uploadedFile.getSize( ) == fileItem.getSize( ) ) );
}
}
if ( bNew )
{
uploadedFiles.add( fileItem );
}
}
}
@Override
public String canUploadFiles( HttpServletRequest request, String strFieldName, List<FileItem> listFileItemsToUpload, Locale locale )
{
int nMaxSize = AppPropertiesService.getPropertyInt( PROPERTY_AVATAR_MAX_SIZE, DEFAULT_MAX_FILE_SIZE );
String strExtensionAuthorized = AppPropertiesService.getProperty( PROPERTY_AVATAR_EXTENSION_AUTORIZED );
// Check if this file has not already been uploaded
List<FileItem> uploadedFiles = getListUploadedFiles( strFieldName, request.getSession( ) );
if ( uploadedFiles != null && uploadedFiles.size( ) >= 1 )
{
return I18nService.getLocalizedString( ERROR_MESSAGE_MULTIPLE_UPLOAD, request.getLocale( ) );
}
for ( FileItem fileItem : listFileItemsToUpload )
{
if ( !StringUtils.isEmpty( strExtensionAuthorized ) )
{
boolean bMimeTypeNotAutorized = true;
for ( String strExtension : strExtensionAuthorized.split( "," ) )
{
if ( fileItem.getName( ).toLowerCase( ).endsWith( strExtension.toLowerCase( ) ) )
{
bMimeTypeNotAutorized = false;
}
}
if ( bMimeTypeNotAutorized )
{
return I18nService.getLocalizedString( ERROR_MESSAGE_AVATAR_MIME_TYPE_AUTORIZED, request.getLocale( ) );
}
}
if ( fileItem.getSize( ) > nMaxSize )
{
return I18nService.getLocalizedString( ERROR_MESSAGE_AVATAR_MAX_SIZE, request.getLocale( ) );
}
}
return null;
}
@Override
public String getHandlerName( )
{
return HANDLER_NAME;
}
@Override
public List<FileItem> getListUploadedFiles( String strFieldName, HttpSession session )
{
if ( StringUtils.isBlank( strFieldName ) )
{
throw new AppException( "id field name is not provided for the current file upload" );
}
initMap( session.getId( ), strFieldName );
// find session-related files in the map
Map<String, List<FileItem>> mapFileItemsSession = _mapAsynchronousUpload.get( session.getId( ) );
return mapFileItemsSession.get( strFieldName );
}
@Override
public void removeFileItem( String strFieldName, HttpSession session, int nIndex )
{
// Remove the file (this will also delete the file physically)
List<FileItem> uploadedFiles = getListUploadedFiles( strFieldName, session );
if ( ( uploadedFiles != null ) && !uploadedFiles.isEmpty( ) && ( uploadedFiles.size( ) > nIndex ) )
{
// Remove the object from the Hashmap
FileItem fileItem = uploadedFiles.remove( nIndex );
fileItem.delete( );
}
}
/**
* Init the map Copy paste from genericAttribute AbstractGenAttUploadHandler from
* http://wiki.lutece.paris.fr/lutece/jsp/site/Portal.jsp?page=wiki&page_name=asynchronous_upload&view=page
*
* @param strSessionId
* the session id
* @param strFieldName
* the field name
*/
private void initMap( String strSessionId, String strFieldName )
{
// find session-related files in the map
Map<String, List<FileItem>> mapFileItemsSession = _mapAsynchronousUpload.get( strSessionId );
// create map if not exists
if ( mapFileItemsSession == null )
{
synchronized( this )
{
// Ignore double check locking error : assignation and instanciation of objects are separated.
mapFileItemsSession = _mapAsynchronousUpload.get( strSessionId );
if ( mapFileItemsSession == null )
{
mapFileItemsSession = new ConcurrentHashMap<String, List<FileItem>>( );
_mapAsynchronousUpload.put( strSessionId, mapFileItemsSession );
}
}
}
List<FileItem> listFileItems = mapFileItemsSession.get( strFieldName );
if ( listFileItems == null )
{
listFileItems = new ArrayList<FileItem>( );
mapFileItemsSession.put( strFieldName, listFileItems );
}
}
/**
* Removes all files associated to the session
*
* @param strSessionId
* the session id
*/
public void removeSessionFiles( String strSessionId )
{
_mapAsynchronousUpload.remove( strSessionId );
}
}