001/*
002 * (C) Copyright 2014 Nuxeo SA (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl-2.1.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Anahide Tchertchian
016 */
017package org.nuxeo.ecm.platform.ui.web.component.file;
018
019import java.io.IOException;
020import java.util.Collection;
021import java.util.Map;
022
023import javax.faces.FacesException;
024import javax.faces.component.UIComponent;
025import javax.faces.context.ExternalContext;
026import javax.faces.context.FacesContext;
027import javax.servlet.ServletException;
028import javax.servlet.http.HttpServletRequest;
029import javax.servlet.http.Part;
030
031import org.apache.commons.fileupload.FileUploadBase.InvalidContentTypeException;
032import org.nuxeo.ecm.core.api.Blobs;
033import org.nuxeo.ecm.platform.ui.web.util.files.FileUtils;
034
035import com.sun.faces.renderkit.html_basic.FileRenderer;
036
037/**
038 * Renderer for file input.
039 * <p>
040 * Overrides the base JSF renderer for files to ignore error when submitting file inside a non multipart form.
041 * <p>
042 * Component {@link UIInputFile} will handle error message management in UI, if validation phase occurs.
043 *
044 * @since 7.1
045 */
046public class NXFileRenderer extends FileRenderer {
047
048    public static final String RENDERER_TYPE = "javax.faces.NXFile";
049
050    @Override
051    public void decode(FacesContext context, UIComponent component) {
052
053        rendererParamsNotNull(context, component);
054
055        if (!shouldDecode(component)) {
056            return;
057        }
058
059        String clientId = decodeBehaviors(context, component);
060
061        if (clientId == null) {
062            clientId = component.getClientId(context);
063        }
064
065        assert (clientId != null);
066        ExternalContext externalContext = context.getExternalContext();
067        Map<String, String> requestMap = externalContext.getRequestParameterMap();
068
069        if (requestMap.containsKey(clientId)) {
070            setSubmittedValue(component, requestMap.get(clientId));
071        }
072
073        HttpServletRequest request = (HttpServletRequest) externalContext.getRequest();
074        try {
075            Collection<Part> parts = request.getParts();
076            for (Part cur : parts) {
077                if (clientId.equals(cur.getName())) {
078                    // Nuxeo patch: transform into serializable blob right away, and do not set component transient
079                    // component.setTransient(true);
080                    // setSubmittedValue(component, cur);
081                    setSubmittedValue(component, FileUtils.createBlob(cur));
082                }
083            }
084        } catch (IOException ioe) {
085            throw new FacesException(ioe);
086        } catch (ServletException se) {
087            Throwable cause = se.getCause();
088            // Nuxeo specific error management
089            if ((cause instanceof InvalidContentTypeException)
090                    || (cause != null && cause.getClass().getName().contains("InvalidContentTypeException"))) {
091                setSubmittedValue(component, Blobs.createBlob(""));
092            } else {
093                throw new FacesException(se);
094            }
095        }
096    }
097}