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/*
* The MIT License
*
* Copyright (c) 2009-2023 PrimeTek Informatics
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.webapp.filter;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.FileCleanerCleanup;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.primefaces.shaded.commons.io.FileCleaningTracker;
import org.primefaces.config.PrimeEnvironment;
import org.primefaces.config.StartupPrimeEnvironment;
import org.primefaces.util.Constants;
import org.primefaces.webapp.MultipartRequest;
public class FileUploadFilter implements Filter {
private static final Logger LOGGER = Logger.getLogger(FileUploadFilter.class.getName());
private static final String THRESHOLD_SIZE_PARAM = "thresholdSize";
private static final String FILE_COUNT_MAX_PARAM = "fileCountMax";
private static final String UPLOAD_DIRECTORY_PARAM = "uploadDirectory";
private String thresholdSize;
private String fileCountMax;
private String uploadDir;
private boolean bypass;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
String uploader = filterConfig.getServletContext().getInitParameter(Constants.ContextParams.UPLOADER);
if (uploader == null || "auto".equals(uploader)) {
PrimeEnvironment environment = new StartupPrimeEnvironment();
bypass = environment.isAtLeastJsf22();
}
else if ("native".equals(uploader)) {
bypass = true;
}
else if ("commons".equals(uploader)) {
bypass = false;
}
thresholdSize = filterConfig.getInitParameter(THRESHOLD_SIZE_PARAM);
fileCountMax = filterConfig.getInitParameter(FILE_COUNT_MAX_PARAM);
uploadDir = filterConfig.getInitParameter(UPLOAD_DIRECTORY_PARAM);
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("FileUploadFilter initiated successfully");
}
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
if (bypass) {
filterChain.doFilter(request, response);
return;
}
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
boolean isMultipart = ServletFileUpload.isMultipartContent(httpServletRequest);
if (isMultipart) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("Parsing file upload request");
}
ServletFileUpload servletFileUpload = new ServletFileUpload(createFileItemFactory(httpServletRequest));
if (fileCountMax != null) {
servletFileUpload.setFileCountMax(Long.parseLong(fileCountMax));
}
MultipartRequest multipartRequest = new MultipartRequest(httpServletRequest, servletFileUpload);
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("File upload request parsed succesfully, continuing with filter chain with a wrapped multipart request");
}
filterChain.doFilter(multipartRequest, response);
}
else {
filterChain.doFilter(request, response);
}
}
@Override
public void destroy() {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("Destroying FileUploadFilter");
}
}
protected FileItemFactory createFileItemFactory(HttpServletRequest httpServletRequest) {
DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
if (thresholdSize != null) {
diskFileItemFactory.setSizeThreshold(Integer.parseInt(thresholdSize));
}
if (uploadDir != null) {
diskFileItemFactory.setRepository(new File(uploadDir));
}
FileCleaningTracker fileCleaningTracker = FileCleanerCleanup.getFileCleaningTracker(httpServletRequest.getSession().getServletContext());
if (fileCleaningTracker != null) {
diskFileItemFactory.setFileCleaningTracker(fileCleaningTracker);
}
return diskFileItemFactory;
}
}