/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.context;
import java.io.File;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.regex.Pattern;
import javax.faces.FacesException;
import javax.faces.FacesWrapper;
import javax.faces.context.FacesContext;
import javax.faces.context.FacesContextFactory;
import javax.faces.context.FacesContextWrapper;
import javax.faces.lifecycle.Lifecycle;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import org.richfaces.log.Logger;
import org.richfaces.log.RichfacesLogger;
import org.richfaces.request.MultipartRequest;
import org.richfaces.request.MultipartRequest25;
import org.richfaces.request.MultipartRequestParser;
import org.richfaces.request.MultipartRequestSizeExceeded;
import org.richfaces.request.ProgressControl;
/**
* @author Nick Belaevski
*
*/
public class FileUploadFacesContextFactory extends FacesContextFactory implements FacesWrapper<FacesContextFactory> {
private static final class FileUploadFacesContext extends FacesContextWrapper {
private FacesContext facesContext;
public FileUploadFacesContext(FacesContext facesContext) {
super();
this.facesContext = facesContext;
}
@Override
public FacesContext getWrapped() {
return facesContext;
}
@Override
public void release() {
MultipartRequest multipartRequest = (MultipartRequest) getExternalContext().getRequestMap().get(
MultipartRequest.REQUEST_ATTRIBUTE_NAME);
if (multipartRequest != null) {
multipartRequest.release();
}
super.release();
}
}
public static final String UID_KEY = "rf_fu_uid";
private static final Logger LOGGER = RichfacesLogger.CONTEXT.getLogger();
private static final Pattern AMPERSAND = Pattern.compile("&+");
private FacesContextFactory wrappedFactory;
public FileUploadFacesContextFactory(FacesContextFactory wrappedFactory) {
super();
this.wrappedFactory = wrappedFactory;
}
@Override
public FacesContextFactory getWrapped() {
return wrappedFactory;
}
private String getParameterValueFromQueryString(String queryString, String paramName) {
if (queryString != null) {
String[] nvPairs = AMPERSAND.split(queryString);
for (String nvPair : nvPairs) {
if (nvPair.length() == 0) {
continue;
}
int eqIdx = nvPair.indexOf('=');
if (eqIdx >= 0) {
try {
String name = URLDecoder.decode(nvPair.substring(0, eqIdx), "UTF-8");
if (paramName.equals(name)) {
return URLDecoder.decode(nvPair.substring(eqIdx + 1), "UTF-8");
}
} catch (UnsupportedEncodingException e) {
// log warning and skip this parameter
LOGGER.debug(e.getMessage(), e);
}
}
}
}
return null;
}
@Override
public FacesContext getFacesContext(Object context, Object request, Object response, Lifecycle lifecycle)
throws FacesException {
if (request instanceof HttpServletRequest) {
HttpServletRequest httpRequest = (HttpServletRequest) request;
if (httpRequest.getContentType() != null && httpRequest.getContentType().startsWith("multipart/")) {
String uid = getParameterValueFromQueryString(httpRequest.getQueryString(), UID_KEY);
if (uid != null) {
long contentLength = Long.parseLong(httpRequest.getHeader("Content-Length"));
ProgressControl progressControl = new ProgressControl(uid, contentLength);
HttpServletRequest wrappedRequest = wrapMultipartRequestServlet25((ServletContext) context, httpRequest,
uid, contentLength, progressControl);
FacesContext facesContext = wrappedFactory.getFacesContext(context, wrappedRequest, response, lifecycle);
progressControl.setContextMap(facesContext.getExternalContext().getSessionMap());
return new FileUploadFacesContext(facesContext);
}
}
}
return wrappedFactory.getFacesContext(context, request, response, lifecycle);
}
private boolean isCreateTempFiles(ServletContext servletContext) {
String param = servletContext.getInitParameter("org.richfaces.fileUpload.createTempFiles");
if (param != null) {
return Boolean.parseBoolean(param);
}
return true;
}
private String getTempFilesDirectory(ServletContext servletContext) {
String result = servletContext.getInitParameter("org.richfaces.fileUpload.tempFilesDirectory");
if (result == null) {
File servletTempDir = (File) servletContext.getAttribute("javax.servlet.context.tempdir");
if (servletTempDir != null) {
result = servletTempDir.getAbsolutePath();
}
}
if (result == null) {
result = new File(System.getProperty("java.io.tmpdir")).getAbsolutePath();
}
return result;
}
private long getMaxRequestSize(ServletContext servletContext) {
String param = servletContext.getInitParameter("org.richfaces.fileUpload.maxRequestSize");
if (param != null) {
return Long.parseLong(param);
}
return 0;
}
private HttpServletRequest wrapMultipartRequestServlet25(ServletContext servletContext, HttpServletRequest request,
String uploadId, long contentLength, ProgressControl progressControl) {
HttpServletRequest multipartRequest;
long maxRequestSize = getMaxRequestSize(servletContext);
if (maxRequestSize == 0 || contentLength <= maxRequestSize) {
boolean createTempFiles = isCreateTempFiles(servletContext);
String tempFilesDirectory = getTempFilesDirectory(servletContext);
MultipartRequestParser requestParser = new MultipartRequestParser(request, createTempFiles, tempFilesDirectory,
progressControl);
multipartRequest = new MultipartRequest25(request, uploadId, progressControl, requestParser);
} else {
multipartRequest = new MultipartRequestSizeExceeded(request, uploadId, progressControl);
}
request.setAttribute(MultipartRequest.REQUEST_ATTRIBUTE_NAME, multipartRequest);
return multipartRequest;
}
}