org.silverpeas.web.sharing.servlets.GetLinkFileServlet.java Source code

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Here is the source code for org.silverpeas.web.sharing.servlets.GetLinkFileServlet.java

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/*
 * Copyright (C) 2000 - 2018 Silverpeas
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * As a special exception to the terms and conditions of version 3.0 of
 * the GPL, you may redistribute this Program in connection with Free/Libre
 * Open Source Software ("FLOSS") applications as described in Silverpeas's
 * FLOSS exception.  You should have received a copy of the text describing
 * the FLOSS exception, and it is also available here:
 * "https://www.silverpeas.org/legal/floss_exception.html"
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.silverpeas.web.sharing.servlets;

import org.silverpeas.core.sharing.model.DownloadDetail;
import org.silverpeas.core.sharing.model.SimpleFileTicket;
import org.silverpeas.core.sharing.model.Ticket;
import org.silverpeas.core.sharing.model.VersionFileTicket;
import org.silverpeas.core.sharing.services.SharingServiceProvider;
import org.silverpeas.web.servlets.RestRequest;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.silverpeas.core.contribution.attachment.model.SimpleDocument;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Date;

import static org.silverpeas.web.sharing.servlets.FileSharingConstants.PARAM_KEYFILE;

public class GetLinkFileServlet extends HttpServlet {

    private static final long serialVersionUID = -3386956747183311695L;

    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        RestRequest rest = new RestRequest(request, "myFile");
        String keyFile = rest.getElementValue(PARAM_KEYFILE);
        Ticket ticket = SharingServiceProvider.getSharingTicketService().getTicket(keyFile);
        if (ticket != null && ticket.isValid()) {
            // recherche des infos sur le fichier...
            String filePath = null;
            String fileType = null;
            String fileName = null;
            long fileSize = 0;
            SimpleDocument document = null;
            if (ticket instanceof SimpleFileTicket) {
                document = ((SimpleFileTicket) ticket).getResource().getAccessedObject();
            } else if (ticket instanceof VersionFileTicket) {
                document = ((VersionFileTicket) ticket).getResource().getAccessedObject();
            }
            if (document != null) {
                filePath = document.getAttachmentPath();
                fileType = document.getContentType();
                fileName = document.getFilename();
                fileSize = document.getSize();
            }
            BufferedInputStream input = null;
            OutputStream out = response.getOutputStream();
            try {
                File realFile = new File(filePath);
                response.setContentType(fileType);
                response.setHeader("Content-Disposition", "inline; filename=\"" + fileName + "\"");
                response.setHeader("Content-Length", String.valueOf(fileSize));
                input = new BufferedInputStream(FileUtils.openInputStream(realFile));
                IOUtils.copy(input, out);
                DownloadDetail download = new DownloadDetail(ticket, new Date(), request.getRemoteAddr());
                SharingServiceProvider.getSharingTicketService().addDownload(download);
                return;
            } catch (Exception ignored) {
            } finally {
                if (input != null) {
                    IOUtils.closeQuietly(input);
                }
                IOUtils.closeQuietly(out);
            }
        }
        getServletContext().getRequestDispatcher("/sharing/jsp/invalidTicket.jsp").forward(request, response);
    }
}